Merge pull request #918 from Sephster/fix-914

Fix empty issue in PHP 5.4

.gitattributes

@@ -1,4 +1,5 @@
 tests/ export-ignore
 phpunit.xml export-ignore
 build.xml export-ignore
-test export-ignore
+test export-ignore
+.travis.yml export-ignore

.gitignore

@@ -1,6 +1,15 @@
-/vendor/
+/vendor
 /composer.lock
-/docs/build/
-/build/logs/
-/build/coverage/
-test
+/build
+/docs
+/testing
+/examples/relational/vendor
+/examples/relational/config/oauth2.sqlite3
+/examples/nosql/vendor
+/examples/nosql/config/oauth2.sqlite3
+/examples/relational/composer.lock
+/tests/codecept/tests/_log
+oauth2-server.paw
+/output_*/
+/_site
+.idea

.scrutinizer.yml

@@ -0,0 +1,36 @@
+filter:
+    excluded_paths:
+        - tests/*
+        - vendor/*
+        - examples/*
+checks:
+    php:
+        code_rating: true
+        remove_extra_empty_lines: true
+        remove_php_closing_tag: true
+        remove_trailing_whitespace: true
+        fix_use_statements:
+            remove_unused: true
+            preserve_multiple: false
+            preserve_blanklines: true
+            order_alphabetically: true
+        fix_php_opening_tag: true
+        fix_linefeed: true
+        fix_line_ending: true
+        fix_identation_4spaces: true
+        fix_doc_comments: true
+tools:
+    external_code_coverage:
+        timeout: 1800
+    php_code_coverage: false
+    php_code_sniffer:
+        config:
+            standard: PSR2
+        filter:
+            paths: ['src']
+    php_loc:
+        enabled: true
+        excluded_dirs: [vendor, tests, examples]
+    php_cpd:
+        enabled: true
+        excluded_dirs: [vendor, tests, examples]

.travis.yml

@@ -0,0 +1,56 @@
+language: php
+
+sudo: false
+
+cache:
+  directories:
+  - vendor
+
+php:
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - hhvm
+  
+matrix:
+  allow_failures:
+    - php: 7.0
+  fast_finish: true
+
+install:
+  - travis_retry composer install --no-interaction --prefer-source
+
+script:
+  - mkdir -p build/logs
+  - phpunit --coverage-text --verbose --coverage-clover=coverage.clover --coverage-html coverage
+
+after_script:
+  - bash -c 'if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then wget https://scrutinizer-ci.com/ocular.phar; fi;
+  - bash -c 'if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then php ocular.phar code-coverage:upload --format=php-clover coverage.clover; fi;
+  - git config --global user.email "travis@travis-ci.org"
+  - git config --global user.name "TravisCI"
+  - cp -R coverage ${HOME}/coverage
+  - cd ${HOME}
+  - git clone --quiet --branch=gh-pages https://${GITHUBTOKEN}@github.com/thephpleague/oauth2-server.git gh-pages > /dev/null
+  - cd gh-pages
+  - mkdir ${TRAVIS_BRANCH}
+  - cd ${TRAVIS_BRANCH}
+  - cp -Rf $HOME/coverage/* .
+  - git add -f .
+  - git commit -m "Travis pushed coverage of ${TRAVIS_COMMIT}@${TRAVIS_BRANCH} to gh-pages"
+  - git push -fq origin gh-pages > /dev/null
+branches:
+  only:
+    - master
+env:
+  global:
+    secure: "C4wD/BQefKSu9W594iyLp+IBCjlM8kKlmp+nXKXnZGi0L8IkV3m4mmNOb8PExxGMhZ3mlev5DnU4Uoh4oJaUxnkR1FpX4dSEpyzU3VknUzSE2yZOlL+bdCw3o85TGoCcp/+ReJCOw5sncxTskJKHlW1YMa33FznaXwLNoImpjTg="
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/7de0ca12596cd5268f30
+    on_success: always  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: false     # default: false

CHANGELOG.md

@@ -0,0 +1,205 @@
+# Changelog
+
+## 4.1.6 (released 2016-09-13)
+
+* Less restrictive on Authorization header check (Issue #652)
+
+## 4.1.5 (released 2016-01-04)
+
+* Enable Symfony 3.0 support (#412)
+
+## 4.1.4 (released 2015-11-13)
+
+* Fix for determining access token in header (Issue #328)
+* Refresh tokens are now returned for MAC responses (Issue #356)
+* Added integration list to readme (Issue #341)
+* Expose parameter passed to exceptions (Issue #345)
+* Removed duplicate routing setup code (Issue #346)
+* Docs fix (Issues #347, #360, #380)
+* Examples fix (Issues #348, #358)
+* Fix typo in docblock (Issue #352)
+* Improved timeouts for MAC tokens (Issue #364)
+* `hash_hmac()` should output raw binary data, not hexits (Issue #370)
+* Improved regex for matching all Base64 characters (Issue #371)
+* Fix incorrect signature parameter (Issue #372)
+* AuthCodeGrant and RefreshTokenGrant don't require client_secret (Issue #377)
+* Added priority argument to event listener (Issue #388)
+
+## 4.1.3 (released 2015-03-22)
+
+* Docblock, namespace and inconsistency fixes (Issue #303)
+* Docblock type fix (Issue #310)
+* Example bug fix (Issue #300)
+* Updated league/event to ~2.1 (Issue #311)
+* Fixed missing session scope (Issue #319)
+* Updated interface docs (Issue #323)
+* `.travis.yml` updates
+
+## 4.1.2 (released 2015-01-01)
+
+* Remove side-effects in hash_equals() implementation (Issue #290)
+
+## 4.1.1 (released 2014-12-31)
+
+* Changed `symfony/http-foundation` dependency version to `~2.4` so package can be installed in Laravel `4.1.*`
+
+## 4.1.0 (released 2014-12-27)
+
+* Added MAC token support (Issue #158)
+* Fixed example init code (Issue #280)
+* Toggle refresh token rotation (Issue #286)
+* Docblock fixes
+
+## 4.0.5 (released 2014-12-15)
+
+* Prevent duplicate session in auth code grant (Issue #282)
+
+## 4.0.4 (released 2014-12-03)
+
+* Ensure refresh token hasn't expired (Issue #270)
+
+## 4.0.3 (released 2014-12-02)
+
+* Fix bad type hintings (Issue #267)
+* Do not forget to set the expire time (Issue #268)
+
+## 4.0.2 (released 2014-11-21)
+
+* Improved interfaces (Issue #255)
+* Learnt how to spell delimiter and so `getScopeDelimiter()` and `setScopeDelimiter()` methods have been renamed
+* Docblock improvements (Issue #254)
+
+## 4.0.1 (released 2014-11-09)
+
+* Alias the master branch in composer.json (Issue #243)
+* Numerous PHP CodeSniffer fixes (Issue #244)
+* .travis.yml update (Issue #245)
+* The getAccessToken method should return an AccessTokenEntity object instead of a string in ResourceServer.php (#246)
+
+## 4.0.0 (released 2014-11-08)
+
+* Complete rewrite
+* Check out the documentation - [http://oauth2.thephpleague.com](http://oauth2.thephpleague.com)
+
+## 3.2.0 (released 2014-04-16)
+
+* Added the ability to change the algorithm that is used to generate the token strings (Issue #151)
+
+## 3.1.2 (released 2014-02-26)
+
+* Support Authorization being an environment variable. [See more](http://fortrabbit.com/docs/essentials/quirks-and-constraints#authorization-header)
+
+## 3.1.1 (released 2013-12-05)
+
+* Normalize headers when `getallheaders()` is available (Issues #108 and #114)
+
+## 3.1.0 (released 2013-12-05)
+
+* No longer necessary to inject the authorisation server into a grant, the server will inject itself
+* Added test for 1419ba8cdcf18dd034c8db9f7de86a2594b68605
+
+## 3.0.1 (released 2013-12-02)
+
+* Forgot to tell TravisCI from testing PHP 5.3
+
+## 3.0.0 (released 2013-12-02)
+
+* Fixed spelling of Implicit grant class (Issue #84)
+* Travis CI now tests for PHP 5.5
+* Fixes for checking headers for resource server (Issues #79 and #)
+* The word "bearer" now has a capital "B" in JSON output to match OAuth 2.0 spec
+* All grants no longer remove old sessions by default
+* All grants now support custom access token TTL (Issue #92)
+* All methods which didn't before return a value now return `$this` to support method chaining
+* Removed the build in DB providers - these will be put in their own repos to remove baggage in the main repository
+* Removed support for PHP 5.3 because this library now uses traits and will use other modern PHP features going forward
+* Moved some grant related functions into a trait to reduce duplicate code
+
+## 2.1.1 (released 2013-06-02)
+
+* Added conditional `isValid()` flag to check for Authorization header only (thanks @alexmcroberts)
+* Fixed semantic meaning of `requireScopeParam()` and `requireStateParam()` by changing their default value to true
+* Updated some duff docblocks
+* Corrected array key call in Resource.php (Issue #63)
+
+## 2.1 (released 2013-05-10)
+
+* Moved zetacomponents/database to "suggest" in composer.json. If you rely on this feature you now need to include " zetacomponents/database" into "require" key in your own composer.json. (Issue #51)
+* New method in Refresh grant called `rotateRefreshTokens()`. Pass in `true` to issue a new refresh token each time an access token is refreshed. This parameter needs to be set to true in order to request reduced scopes with the new access token. (Issue #47)
+* Rename `key` column in oauth_scopes table to `scope` as `key` is a reserved SQL word. (Issue #45)
+* The `scope` parameter is no longer required by default as per the RFC. (Issue #43)
+* You can now set multiple default scopes by passing an array into `setDefaultScope()`. (Issue #42)
+* The password and client credentials grants now allow for multiple sessions per user. (Issue #32)
+* Scopes associated to authorization codes are not held in their own table (Issue #44)
+* Database schema updates.
+
+## 2.0.5 (released 2013-05-09)
+
+* Fixed `oauth_session_token_scopes` table primary key
+* Removed `DEFAULT ''` that has slipped into some tables
+* Fixed docblock for `SessionInterface::associateRefreshToken()`
+
+## 2.0.4 (released 2013-05-09)
+
+* Renamed primary key in oauth_client_endpoints table
+* Adding missing column to oauth_session_authcodes
+* SECURITY FIX: A refresh token should be bound to a client ID
+
+## 2.0.3 (released 2013-05-08)
+
+* Fixed a link to code in composer.json
+
+## 2.0.2 (released 2013-05-08)
+
+* Updated README with wiki guides
+* Removed `null` as default parameters in some methods in the storage interfaces
+* Fixed license copyright
+
+## 2.0.0 (released 2013-05-08)
+
+**If you're upgrading from v1.0.8 there are lots of breaking changes**
+
+* Rewrote the session storage interface from scratch so methods are more obvious
+* Included a PDO driver which implements the storage interfaces so the library is more "get up and go"
+* Further normalised the database structure so all sessions no longer contain infomation related to authorization grant (which may or may not be enabled)
+* A session can have multiple associated access tokens
+* Induvidual grants can have custom expire times for access tokens
+* Authorization codes now have a TTL of 10 minutes by default (can be manually set)
+* Refresh tokens now have a TTL of one week by default (can be manually set)
+* The client credentials grant will no longer gives out refresh tokens as per the specification
+
+## 1.0.8 (released 2013-03-18)
+
+* Fixed check for required state parameter
+* Fixed check that user's credentials are correct in Password grant
+
+## 1.0.7 (released 2013-03-04)
+
+* Added method `requireStateParam()`
+* Added method `requireScopeParam()`
+
+## 1.0.6 (released 2013-02-22)
+
+* Added links to tutorials in the README
+* Added missing `state` parameter request to the `checkAuthoriseParams()` method.
+
+## 1.0.5 (released 2013-02-21)
+
+* Fixed the SQL example for SessionInterface::getScopes()
+
+## 1.0.3 (released 2013-02-20)
+
+* Changed all instances of the "authentication server" to "authorization server"
+
+## 1.0.2 (released 2013-02-20)
+
+* Fixed MySQL create table order
+* Fixed version number in composer.json
+
+## 1.0.1 (released 2013-02-19)
+
+* Updated AuthServer.php to use `self::getParam()`
+
+## 1.0.0 (released 2013-02-15)
+
+* First major release

CONTRIBUTING.md

@@ -0,0 +1,15 @@
+Thanks for contributing to this project.
+
+
+**Please submit your pull request against the `develop` branch only.**
+
+
+Please ensure that you run `phpunit` from the project root after you've made any changes.
+
+If you've added something new please create a new unit test, if you've changed something please update any unit tests as appropritate.
+
+We're trying to ensure there is **100%** test code coverage (including testing PHP errors and exceptions) so please ensure any new/updated tests cover all of your changes.
+
+Thank you,
+
+@alexbilbie

README.md

@@ -1,47 +1,83 @@
-# PHP OAuth Framework
+# PHP OAuth 2.0 Server by [@alexbilbie](https://twitter.com/alexbilbie)
 
-The goal of this project is to develop a standards compliant [OAuth 2](http://tools.ietf.org/wg/oauth/draft-ietf-oauth-v2/) authentication server, resource server and client library with support for a major OAuth 2 providers.
-
-## Package Installation
-
-The framework is provided as a Composer package which can be installed by adding the package to your composer.json file:
-
-```javascript
-{
-	"require": {  
-		"lncd\Oauth2": "*"  
-	}
-}
-```
-
-## Package Integration
-
-Check out the [wiki](https://github.com/lncd/OAuth2/wiki)
-
-## Current Features
-
-### Authentication Server
-
-The authentication server is a flexible class that supports the standard authorization code grant.
-
-### Resource Server
-
-The resource server allows you to secure your API endpoints by checking for a valid OAuth access token in the request and ensuring the token has the correct permission to access resources.
+[![Latest Version](http://img.shields.io/packagist/v/league/oauth2-server.svg?style=flat-square)](https://github.com/thephpleague/oauth2-server/releases)
+[![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE.md)
+[![Build Status](https://img.shields.io/travis/thephpleague/oauth2-server/master.svg?style=flat-square)](https://travis-ci.org/thephpleague/oauth2-server)
+[![Coverage Status](https://img.shields.io/scrutinizer/coverage/g/thephpleague/oauth2-server.svg?style=flat-square)](https://scrutinizer-ci.com/g/thephpleague/oauth2-server/code-structure)
+[![Quality Score](https://img.shields.io/scrutinizer/g/thephpleague/oauth2-server.svg?style=flat-square)](https://scrutinizer-ci.com/g/thephpleague/oauth2-server)
+[![Total Downloads](https://img.shields.io/packagist/dt/league/oauth2-server.svg?style=flat-square)](https://packagist.org/packages/league/oauth2-server) [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/thephpleague/oauth2-server?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
 
 
+A standards compliant [OAuth 2.0](http://tools.ietf.org/wg/oauth/draft-ietf-oauth-v2/) authorization server and resource server written in PHP which makes working with OAuth 2.0 trivial. You can easily configure an OAuth 2.0 server to protect your API with access tokens, or allow clients to request new access tokens and refresh them.
+
+It supports out of the box the following grants:
+
+* Authorization code grant
+* Client credentials grant
+* Resource owner password credentials grant
+* Refresh grant
+
+You can also define your own grants.
+
+In addition it supports the following token types:
+
+* Bearer tokens
+* MAC tokens
+* JSON web tokens (coming soon)
+
+You can also create you own tokens.
 
 
-## Future Goals
+## Requirements
 
-### Authentication Server
+The following versions of PHP are supported:
 
-* Support for [JSON web tokens](http://tools.ietf.org/wg/oauth/draft-ietf-oauth-json-web-token/).
-* Support for [SAML assertions](http://tools.ietf.org/wg/oauth/draft-ietf-oauth-saml2-bearer/).
+* PHP 5.4
+* PHP 5.5
+* PHP 5.6
+* HHVM
 
-### Client support
+## Documentation
 
-* Merge in https://github.com/philsturgeon/codeigniter-oauth2
+This library has [full documentation](http://oauth2.thephpleague.com), powered by [Jekyll](http://jekyllrb.com/).
 
----
+Contribute to this documentation in the [gh-pages branch](https://github.com/thephpleague/oauth2-server/tree/gh-pages/).
 
-This code will be developed as part of the [Linkey](http://linkey.blogs.lincoln.ac.uk) project which has been funded by [JISC](http://jisc.ac.uk) under the Access and Identity Management programme.
+## Changelog
+
+[See the project releases page](https://github.com/thephpleague/oauth2-server/releases)
+
+## Contributing
+
+Please see [CONTRIBUTING](https://github.com/thephpleague/oauth2-server/blob/master/CONTRIBUTING.md) for details.
+
+## Integration
+
+- [CakePHP 3](https://github.com/uafrica/oauth-server)
+- [Laravel](https://github.com/lucadegasperi/oauth2-server-laravel)
+
+## Support
+
+Bugs and feature request are tracked on [GitHub](https://github.com/thephpleague/oauth2-server/issues)
+
+## Security
+
+If you discover any security related issues, please email hello@alexbilbie.com instead of using the issue tracker.
+
+## License
+
+This package is released under the MIT License. See the bundled [LICENSE](https://github.com/thephpleague/oauth2-server/blob/master/LICENSE) file for details.
+
+## Credits
+
+This code is principally developed and maintained by [Alex Bilbie](https://twitter.com/alexbilbie).
+
+Special thanks to:
+
+* [Dan Horrigan](https://github.com/dandoescode)
+* [Nick Jackson](https://github.com/jacksonj04)
+* [Michael Gooden](https://github.com/MichaelGooden)
+* [Phil Sturgeon](https://github.com/philsturgeon)
+* [and all the other contributors](https://github.com/thephpleague/oauth2-server/contributors)
+
+The initial code was developed as part of the [Linkey](http://linkey.blogs.lincoln.ac.uk) project which was funded by [JISC](http://jisc.ac.uk) under the Access and Identity Management programme.

build.xml

@@ -1,142 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="PHP OAuth 2.0 Server" default="build">
-
-	<target name="build" depends="prepare,lint,phploc,pdepend,phpmd-ci,phpcs-ci,phpcpd,composer,phpunit,phpdox,phpcb"/>
-	
-	<target name="build-parallel" depends="prepare,lint,tools-parallel,phpcb"/>
-	
-	<target name="minimal" depends="prepare,lint,phploc,pdepend,phpcpd,composer,phpunit,phpdox,phpcb" />
-	
-	<target name="tools-parallel" description="Run tools in parallel">
-		<parallel threadCount="2">
-			<sequential>
-				<antcall target="pdepend"/>
-				<antcall target="phpmd-ci"/>
-			</sequential>
-			<antcall target="phpcpd"/>
-			<antcall target="phpcs-ci"/>
-			<antcall target="phploc"/>
-			<antcall target="phpdox"/>
-		</parallel>
-	</target>
-	
-	<target name="clean" description="Cleanup build artifacts">
-		<delete dir="${basedir}/build/api"/>
-		<delete dir="${basedir}/build/code-browser"/>
-		<delete dir="${basedir}/build/coverage"/>
-		<delete dir="${basedir}/build/logs"/>
-		<delete dir="${basedir}/build/pdepend"/>
-	</target>
-	
-	<target name="prepare" depends="clean" description="Prepare for build">
-		<mkdir dir="${basedir}/build/api"/>
-		<mkdir dir="${basedir}/build/code-browser"/>
-		<mkdir dir="${basedir}/build/coverage"/>
-		<mkdir dir="${basedir}/build/logs"/>
-		<mkdir dir="${basedir}/build/pdepend"/>
-		<mkdir dir="${basedir}/build/phpdox"/>
-	</target>
-	
-	<target name="lint">
-		<apply executable="php" failonerror="true">
-			<arg value="-l" />
-			
-			<fileset dir="${basedir}/src">
-				<include name="**/*.php" />
-				<modified />
-			</fileset>
-		</apply>
-	</target>
-	
-	<target name="phploc" description="Measure project size using PHPLOC">
-		<exec executable="phploc">
-			<arg value="--log-csv" />
-			<arg value="${basedir}/build/logs/phploc.csv" />
-			<arg path="${basedir}/src" />
-		</exec>
-	</target>
-	
-	<target name="pdepend" description="Calculate software metrics using PHP_Depend">
-		<exec executable="pdepend">
-			<arg value="--jdepend-xml=${basedir}/build/logs/jdepend.xml" />
-			<arg value="--jdepend-chart=${basedir}/build/pdepend/dependencies.svg" />
-			<arg value="--overview-pyramid=${basedir}/build/pdepend/overview-pyramid.svg" />
-			<arg path="${basedir}/src" />
-		</exec>
-	</target>
-	
-	<target name="phpmd" description="Perform project mess detection using PHPMD and print human readable output. Intended for usage on the command line before committing.">
-		<exec executable="phpmd">
-			<arg path="${basedir}/src" />
-			<arg value="text" />
-			<arg value="${basedir}/build/phpmd.xml" />
-		</exec>
-	</target>
-	
-	<target name="phpmd-ci" description="Perform project mess detection using PHPMD creating a log file for the continuous integration server">
-		<exec executable="phpmd">
-			<arg path="${basedir}/src" />
-			<arg value="xml" />
-			<arg value="${basedir}/build/phpmd.xml" />
-			<arg value="--reportfile" />
-			<arg value="${basedir}/build/logs/pmd.xml" />
-		</exec>
-	</target>
-	
-	<target name="phpcs" description="Find coding standard violations using PHP_CodeSniffer and print human readable output. Intended for usage on the command line before committing.">
-		<exec executable="phpcs">
-			<arg value="--standard=${basedir}/build/phpcs.xml" />
-			<arg value="--extensions=php" />
-			<arg value="--ignore=third_party/CIUnit" />
-			<arg path="${basedir}/src" />
-		</exec>
-	</target>
-	
-	<target name="phpcs-ci" description="Find coding standard violations using PHP_CodeSniffer creating a log file for the continuous integration server">
-		<exec executable="phpcs" output="/dev/null">
-			<arg value="--report=checkstyle" />
-			<arg value="--report-file=${basedir}/build/logs/checkstyle.xml" />
-			<arg value="--standard=${basedir}/build/phpcs.xml" />
-			<arg value="--extensions=php" />
-			<arg value="--ignore=third_party/CIUnit" />
-			<arg path="${basedir}/src" />
-		</exec>
-	</target>
-	
-	<target name="phpcpd" description="Find duplicate code using PHPCPD">
-		<exec executable="phpcpd">
-			<arg value="--log-pmd" />
-			<arg value="${basedir}/build/logs/pmd-cpd.xml" />
-			<arg path="${basedir}/src" />
-		</exec>
-	</target>
-
-	<target name="composer" description="Install Composer requirements">
-		<exec executable="composer.phar" failonerror="true">
-			<arg value="install" />
-			<arg value="--dev" />
-		</exec>
-	</target>
-
-	<target name="phpunit" description="Run unit tests with PHPUnit">
-		<exec executable="${basedir}/vendor/bin/phpunit" failonerror="true">
-			<arg value="--configuration" />
-			<arg value="${basedir}/build/phpunit.xml" />
-		</exec>
-	</target>
-	
-	<target name="phpdox" description="Generate API documentation using phpDox">
-		<exec executable="phpdox"/>
-	</target>
-	
-	<target name="phpcb" description="Aggregate tool output with PHP_CodeBrowser">
-		<exec executable="phpcb">
-			<arg value="--log" />
-			<arg path="${basedir}/build/logs" />
-			<arg value="--source" />
-			<arg path="${basedir}/src" />
-			<arg value="--output" />
-			<arg path="${basedir}/build/code-browser" />
-		</exec>
-	</target>
-</project>

build/phpcs.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0"?>
-<ruleset name="PHP_CodeSniffer">
-
-	<description>PHP_CodeSniffer configuration</description>
-
-	<rule ref="PSR2"/>
-
-</ruleset>

build/phpmd.xml

@@ -1,14 +0,0 @@
-<ruleset name="OAuth 2.0 Server"
-	xmlns="http://pmd.sf.net/ruleset/1.0.0"
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0
-		http://pmd.sf.net/ruleset_xml_schema.xsd"
-	xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">
-
-	<description>
-		Ruleset for OAuth 2.0 server
-	</description>
-
-	<!-- Import the entire unused code rule set -->
-	<rule ref="rulesets/unusedcode.xml" />
-</ruleset>

build/phpunit.xml

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<phpunit colors="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" stopOnError="false" stopOnFailure="false" stopOnIncomplete="false" stopOnSkipped="false">
-	<testsuites>
-		<testsuite name="Authentication Server">
-			<directory suffix="test.php">../tests/authentication</directory>
-		</testsuite>
-		<testsuite name="Resource Server">
-			<directory suffix="test.php">../tests/resource</directory>
-		</testsuite>
-	</testsuites>
-	<filter>
-		<blacklist>
-			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
-			<directory suffix=".php">PHP_LIBDIR</directory>
-			<directory suffix=".php">../vendor/composer</directory>
-		</blacklist>
-	</filter>
-	<logging>
-		<log type="coverage-html" target="coverage" title="lncd/OAuth" charset="UTF-8" yui="true" highlight="true" lowUpperBound="35" highLowerBound="70"/>
-		<log type="coverage-clover" target="logs/clover.xml"/>
-		<log type="junit" target="logs/junit.xml" logIncompleteSkipped="false"/>
-	</logging>
-</phpunit>

composer.json

@@ -1,29 +1,38 @@
 {
-	"name": "lncd/oauth2",
-	"description": "OAuth 2.0 Framework",
-	"version": "0.3.3",
-	"homepage": "https://github.com/lncd/OAuth2",
+	"name": "league/oauth2-server",
+	"description": "A lightweight and powerful OAuth 2.0 authorization and resource server library with support for all the core specification grants. This library will allow you to secure your API with OAuth and allow your applications users to approve apps that want to access their data from your API.",
+	"homepage": "http://oauth2.thephpleague.com/",
 	"license": "MIT",
 	"require": {
-		"php": ">=5.3.0",
-		"guzzle/guzzle": "*"
+		"php": ">=5.4.0",
+		"symfony/http-foundation": "~2.4|~3.0",
+		"league/event": "~2.1"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "*"
+		"phpunit/phpunit": "4.3.*",
+		"mockery/mockery": "0.9.*"
 	},
 	"repositories": [
 		{
 			"type": "git",
-			"url": "https://github.com/lncd/OAuth2"
+			"url": "https://github.com/thephpleague/oauth2-server.git"
 		}
 	],
 	"keywords": [
 		"oauth",
 		"oauth2",
+		"oauth 2",
+		"oauth 2.0",
 		"server",
+		"auth",
 		"authorization",
+		"authorisation",
 		"authentication",
-		"resource"
+		"resource",
+		"api",
+		"auth",
+		"protect",
+		"secure"
 	],
 	"authors": [
 		{
@@ -33,12 +42,18 @@
 			"role": "Developer"
 		}
 	],
+	"replace": {
+		"lncd/oauth2": "*",
+		"league/oauth2server": "*"
+	},
 	"autoload": {
-		"psr-0": {
-			"Oauth2": "src/"
+		"psr-4": {
+			"League\\OAuth2\\Server\\": "src/"
 		}
 	},
-	"suggest": {
-		"lncd/oauth2-facebook": "Adds support for Facebook as an IDP"
+	"autoload-dev": {
+		"psr-4": {
+			"LeagueTests\\": "tests/unit/"
+		}
 	}
-}
+}

examples/relational/Model/Users.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace RelationalExample\Model;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+
+class Users
+{
+    public function get($username = null)
+    {
+        $query = Capsule::table('users')->select(['username', 'password', 'name', 'email', 'photo']);
+
+        if ($username !== null) {
+            $query->where('username', '=', $username);
+        }
+
+        $result = $query->get();
+
+        if (count($result) > 0) {
+            return $result;
+        }
+
+        return;
+    }
+}

examples/relational/Storage/AccessTokenStorage.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace RelationalExample\Storage;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\AccessTokenInterface;
+
+class AccessTokenStorage extends AbstractStorage implements AccessTokenInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function get($token)
+    {
+        $result = Capsule::table('oauth_access_tokens')
+                            ->where('access_token', $token)
+                            ->get();
+
+        if (count($result) === 1) {
+            $token = (new AccessTokenEntity($this->server))
+                        ->setId($result[0]['access_token'])
+                        ->setExpireTime($result[0]['expire_time']);
+
+            return $token;
+        }
+
+        return;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getScopes(AccessTokenEntity $token)
+    {
+        $result = Capsule::table('oauth_access_token_scopes')
+                                    ->select(['oauth_scopes.id', 'oauth_scopes.description'])
+                                    ->join('oauth_scopes', 'oauth_access_token_scopes.scope', '=', 'oauth_scopes.id')
+                                    ->where('access_token', $token->getId())
+                                    ->get();
+
+        $response = [];
+
+        if (count($result) > 0) {
+            foreach ($result as $row) {
+                $scope = (new ScopeEntity($this->server))->hydrate([
+                    'id'            =>  $row['id'],
+                    'description'   =>  $row['description'],
+                ]);
+                $response[] = $scope;
+            }
+        }
+
+        return $response;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function create($token, $expireTime, $sessionId)
+    {
+        Capsule::table('oauth_access_tokens')
+                    ->insert([
+                        'access_token'     =>  $token,
+                        'session_id'    =>  $sessionId,
+                        'expire_time'   =>  $expireTime,
+                    ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function associateScope(AccessTokenEntity $token, ScopeEntity $scope)
+    {
+        Capsule::table('oauth_access_token_scopes')
+                    ->insert([
+                        'access_token'  =>  $token->getId(),
+                        'scope' =>  $scope->getId(),
+                    ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(AccessTokenEntity $token)
+    {
+        Capsule::table('oauth_access_tokens')
+                    ->where('access_token', $token->getId())
+                    ->delete();
+    }
+}

examples/relational/Storage/AuthCodeStorage.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace RelationalExample\Storage;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+use League\OAuth2\Server\Entity\AuthCodeEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\AuthCodeInterface;
+
+class AuthCodeStorage extends AbstractStorage implements AuthCodeInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function get($code)
+    {
+        $result = Capsule::table('oauth_auth_codes')
+                            ->where('auth_code', $code)
+                            ->where('expire_time', '>=', time())
+                            ->get();
+
+        if (count($result) === 1) {
+            $token = new AuthCodeEntity($this->server);
+            $token->setId($result[0]['auth_code']);
+            $token->setRedirectUri($result[0]['client_redirect_uri']);
+            $token->setExpireTime($result[0]['expire_time']);
+
+            return $token;
+        }
+
+        return;
+    }
+
+    public function create($token, $expireTime, $sessionId, $redirectUri)
+    {
+        Capsule::table('oauth_auth_codes')
+                    ->insert([
+                        'auth_code'     =>  $token,
+                        'client_redirect_uri'  =>  $redirectUri,
+                        'session_id'    =>  $sessionId,
+                        'expire_time'   =>  $expireTime,
+                    ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getScopes(AuthCodeEntity $token)
+    {
+        $result = Capsule::table('oauth_auth_code_scopes')
+                                    ->select(['oauth_scopes.id', 'oauth_scopes.description'])
+                                    ->join('oauth_scopes', 'oauth_auth_code_scopes.scope', '=', 'oauth_scopes.id')
+                                    ->where('auth_code', $token->getId())
+                                    ->get();
+
+        $response = [];
+
+        if (count($result) > 0) {
+            foreach ($result as $row) {
+                $scope = (new ScopeEntity($this->server))->hydrate([
+                    'id'            =>  $row['id'],
+                    'description'   =>  $row['description'],
+                ]);
+                $response[] = $scope;
+            }
+        }
+
+        return $response;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function associateScope(AuthCodeEntity $token, ScopeEntity $scope)
+    {
+        Capsule::table('oauth_auth_code_scopes')
+                    ->insert([
+                        'auth_code' =>  $token->getId(),
+                        'scope'     =>  $scope->getId(),
+                    ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(AuthCodeEntity $token)
+    {
+        Capsule::table('oauth_auth_codes')
+                    ->where('auth_code', $token->getId())
+                    ->delete();
+    }
+}

examples/relational/Storage/ClientStorage.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace RelationalExample\Storage;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\SessionEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\ClientInterface;
+
+class ClientStorage extends AbstractStorage implements ClientInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function get($clientId, $clientSecret = null, $redirectUri = null, $grantType = null)
+    {
+        $query = Capsule::table('oauth_clients')
+                          ->select('oauth_clients.*')
+                          ->where('oauth_clients.id', $clientId);
+
+        if ($clientSecret !== null) {
+            $query->where('oauth_clients.secret', $clientSecret);
+        }
+
+        if ($redirectUri) {
+            $query->join('oauth_client_redirect_uris', 'oauth_clients.id', '=', 'oauth_client_redirect_uris.client_id')
+                  ->select(['oauth_clients.*', 'oauth_client_redirect_uris.*'])
+                  ->where('oauth_client_redirect_uris.redirect_uri', $redirectUri);
+        }
+
+        $result = $query->get();
+
+        if (count($result) === 1) {
+            $client = new ClientEntity($this->server);
+            $client->hydrate([
+                'id'    =>  $result[0]['id'],
+                'name'  =>  $result[0]['name'],
+            ]);
+
+            return $client;
+        }
+
+        return;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getBySession(SessionEntity $session)
+    {
+        $result = Capsule::table('oauth_clients')
+                            ->select(['oauth_clients.id', 'oauth_clients.name'])
+                            ->join('oauth_sessions', 'oauth_clients.id', '=', 'oauth_sessions.client_id')
+                            ->where('oauth_sessions.id', $session->getId())
+                            ->get();
+
+        if (count($result) === 1) {
+            $client = new ClientEntity($this->server);
+            $client->hydrate([
+                'id'    =>  $result[0]['id'],
+                'name'  =>  $result[0]['name'],
+            ]);
+
+            return $client;
+        }
+
+        return;
+    }
+}

examples/relational/Storage/RefreshTokenStorage.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace RelationalExample\Storage;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+use League\OAuth2\Server\Entity\RefreshTokenEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\RefreshTokenInterface;
+
+class RefreshTokenStorage extends AbstractStorage implements RefreshTokenInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function get($token)
+    {
+        $result = Capsule::table('oauth_refresh_tokens')
+                            ->where('refresh_token', $token)
+                            ->get();
+
+        if (count($result) === 1) {
+            $token = (new RefreshTokenEntity($this->server))
+                        ->setId($result[0]['refresh_token'])
+                        ->setExpireTime($result[0]['expire_time'])
+                        ->setAccessTokenId($result[0]['access_token']);
+
+            return $token;
+        }
+
+        return;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function create($token, $expireTime, $accessToken)
+    {
+        Capsule::table('oauth_refresh_tokens')
+                    ->insert([
+                        'refresh_token'     =>  $token,
+                        'access_token'    =>  $accessToken,
+                        'expire_time'   =>  $expireTime,
+                    ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(RefreshTokenEntity $token)
+    {
+        Capsule::table('oauth_refresh_tokens')
+                            ->where('refresh_token', $token->getId())
+                            ->delete();
+    }
+}

examples/relational/Storage/ScopeStorage.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace RelationalExample\Storage;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\ScopeInterface;
+
+class ScopeStorage extends AbstractStorage implements ScopeInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function get($scope, $grantType = null, $clientId = null)
+    {
+        $result = Capsule::table('oauth_scopes')
+                                ->where('id', $scope)
+                                ->get();
+
+        if (count($result) === 0) {
+            return;
+        }
+
+        return (new ScopeEntity($this->server))->hydrate([
+            'id'            =>  $result[0]['id'],
+            'description'   =>  $result[0]['description'],
+        ]);
+    }
+}

examples/relational/Storage/SessionStorage.php

@@ -0,0 +1,109 @@
+<?php
+
+namespace RelationalExample\Storage;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\AuthCodeEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Entity\SessionEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\SessionInterface;
+
+class SessionStorage extends AbstractStorage implements SessionInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getByAccessToken(AccessTokenEntity $accessToken)
+    {
+        $result = Capsule::table('oauth_sessions')
+                            ->select(['oauth_sessions.id', 'oauth_sessions.owner_type', 'oauth_sessions.owner_id', 'oauth_sessions.client_id', 'oauth_sessions.client_redirect_uri'])
+                            ->join('oauth_access_tokens', 'oauth_access_tokens.session_id', '=', 'oauth_sessions.id')
+                            ->where('oauth_access_tokens.access_token', $accessToken->getId())
+                            ->get();
+
+        if (count($result) === 1) {
+            $session = new SessionEntity($this->server);
+            $session->setId($result[0]['id']);
+            $session->setOwner($result[0]['owner_type'], $result[0]['owner_id']);
+
+            return $session;
+        }
+
+        return;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getByAuthCode(AuthCodeEntity $authCode)
+    {
+        $result = Capsule::table('oauth_sessions')
+                            ->select(['oauth_sessions.id', 'oauth_sessions.owner_type', 'oauth_sessions.owner_id', 'oauth_sessions.client_id', 'oauth_sessions.client_redirect_uri'])
+                            ->join('oauth_auth_codes', 'oauth_auth_codes.session_id', '=', 'oauth_sessions.id')
+                            ->where('oauth_auth_codes.auth_code', $authCode->getId())
+                            ->get();
+
+        if (count($result) === 1) {
+            $session = new SessionEntity($this->server);
+            $session->setId($result[0]['id']);
+            $session->setOwner($result[0]['owner_type'], $result[0]['owner_id']);
+
+            return $session;
+        }
+
+        return;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getScopes(SessionEntity $session)
+    {
+        $result = Capsule::table('oauth_sessions')
+                            ->select('oauth_scopes.*')
+                            ->join('oauth_session_scopes', 'oauth_sessions.id', '=', 'oauth_session_scopes.session_id')
+                            ->join('oauth_scopes', 'oauth_scopes.id', '=', 'oauth_session_scopes.scope')
+                            ->where('oauth_sessions.id', $session->getId())
+                            ->get();
+
+        $scopes = [];
+
+        foreach ($result as $scope) {
+            $scopes[] = (new ScopeEntity($this->server))->hydrate([
+                'id'            =>  $scope['id'],
+                'description'   =>  $scope['description'],
+            ]);
+        }
+
+        return $scopes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function create($ownerType, $ownerId, $clientId, $clientRedirectUri = null)
+    {
+        $id = Capsule::table('oauth_sessions')
+                        ->insertGetId([
+                            'owner_type'  =>    $ownerType,
+                            'owner_id'    =>    $ownerId,
+                            'client_id'   =>    $clientId,
+                        ]);
+
+        return $id;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function associateScope(SessionEntity $session, ScopeEntity $scope)
+    {
+        Capsule::table('oauth_session_scopes')
+                            ->insert([
+                                'session_id'    =>  $session->getId(),
+                                'scope'         =>  $scope->getId(),
+                            ]);
+    }
+}

examples/relational/api.php

@@ -0,0 +1,130 @@
+<?php
+
+use League\OAuth2\Server\ResourceServer;
+use Orno\Http\Exception\NotFoundException;
+use Orno\Http\Request;
+use Orno\Http\Response;
+use RelationalExample\Model;
+use RelationalExample\Storage;
+
+include __DIR__.'/vendor/autoload.php';
+
+// Set up the OAuth 2.0 resource server
+$sessionStorage = new Storage\SessionStorage();
+$accessTokenStorage = new Storage\AccessTokenStorage();
+$clientStorage = new Storage\ClientStorage();
+$scopeStorage = new Storage\ScopeStorage();
+
+$server = new ResourceServer(
+    $sessionStorage,
+    $accessTokenStorage,
+    $clientStorage,
+    $scopeStorage
+);
+
+// Routing setup
+$request = (new Request())->createFromGlobals();
+$router = new \Orno\Route\RouteCollection();
+
+// GET /tokeninfo
+$router->get('/tokeninfo', function (Request $request) use ($server) {
+
+    $accessToken = $server->getAccessToken();
+    $session = $server->getSessionStorage()->getByAccessToken($accessToken);
+    $token = [
+        'owner_id' => $session->getOwnerId(),
+        'owner_type' => $session->getOwnerType(),
+        'access_token' => $accessToken,
+        'client_id' => $session->getClient()->getId(),
+        'scopes' => $accessToken->getScopes(),
+    ];
+
+    return new Response(json_encode($token));
+
+});
+
+// GET /users
+$router->get('/users', function (Request $request) use ($server) {
+
+    $results = (new Model\Users())->get();
+
+    $users = [];
+
+    foreach ($results as $result) {
+        $user = [
+            'username'  =>  $result['username'],
+            'name'      =>  $result['name'],
+        ];
+
+        if ($server->getAccessToken()->hasScope('email')) {
+            $user['email'] = $result['email'];
+        }
+
+        if ($server->getAccessToken()->hasScope('photo')) {
+            $user['photo'] = $result['photo'];
+        }
+
+        $users[] = $user;
+    }
+
+    return new Response(json_encode($users));
+});
+
+// GET /users/{username}
+$router->get('/users/{username}', function (Request $request, Response $response, array $args) use ($server) {
+
+    $result = (new Model\Users())->get($args['username']);
+
+    if (count($result) === 0) {
+        throw new NotFoundException();
+    }
+
+    $user = [
+        'username'  =>  $result[0]['username'],
+        'name'      =>  $result[0]['name'],
+    ];
+
+    if ($server->getAccessToken()->hasScope('email')) {
+        $user['email'] = $result[0]['email'];
+    }
+
+    if ($server->getAccessToken()->hasScope('photo')) {
+        $user['photo'] = $result[0]['photo'];
+    }
+
+    return new Response(json_encode($user));
+});
+
+$dispatcher = $router->getDispatcher();
+
+try {
+    // Check that access token is present
+    $server->isValidRequest(false);
+
+    // A successful response
+    $response = $dispatcher->dispatch(
+        $request->getMethod(),
+        $request->getPathInfo()
+    );
+} catch (\Orno\Http\Exception $e) {
+    // A failed response
+    $response = $e->getJsonResponse();
+    $response->setContent(json_encode(['status_code' => $e->getStatusCode(), 'message' => $e->getMessage()]));
+} catch (\League\OAuth2\Server\Exception\OAuthException $e) {
+    $response = new Response(json_encode([
+        'error'     =>  $e->errorType,
+        'message'   =>  $e->getMessage(),
+    ]), $e->httpStatusCode);
+
+    foreach ($e->getHttpHeaders() as $header) {
+        $response->headers($header);
+    }
+} catch (\Exception $e) {
+    $response = new Orno\Http\Response();
+    $response->setStatusCode(500);
+    $response->setContent(json_encode(['status_code' => 500, 'message' => $e->getMessage()]));
+} finally {
+    // Return the response
+    $response->headers->set('Content-type', 'application/json');
+    $response->send();
+}

examples/relational/authcode_grant.php

@@ -0,0 +1,117 @@
+<?php
+
+use Orno\Http\Request;
+use Orno\Http\Response;
+use RelationalExample\Storage;
+
+include __DIR__.'/vendor/autoload.php';
+
+// Routing setup
+$request = (new Request())->createFromGlobals();
+$router = new \Orno\Route\RouteCollection();
+$router->setStrategy(\Orno\Route\RouteStrategyInterface::RESTFUL_STRATEGY);
+
+// Set up the OAuth 2.0 authorization server
+$server = new \League\OAuth2\Server\AuthorizationServer();
+$server->setSessionStorage(new Storage\SessionStorage());
+$server->setAccessTokenStorage(new Storage\AccessTokenStorage());
+$server->setRefreshTokenStorage(new Storage\RefreshTokenStorage());
+$server->setClientStorage(new Storage\ClientStorage());
+$server->setScopeStorage(new Storage\ScopeStorage());
+$server->setAuthCodeStorage(new Storage\AuthCodeStorage());
+
+$authCodeGrant = new \League\OAuth2\Server\Grant\AuthCodeGrant();
+$server->addGrantType($authCodeGrant);
+
+$refrehTokenGrant = new \League\OAuth2\Server\Grant\RefreshTokenGrant();
+$server->addGrantType($refrehTokenGrant);
+
+// Routing setup
+$request = (new Request())->createFromGlobals();
+$router = new \Orno\Route\RouteCollection();
+
+$router->get('/authorize', function (Request $request) use ($server) {
+
+    // First ensure the parameters in the query string are correct
+
+    try {
+        $authParams = $server->getGrantType('authorization_code')->checkAuthorizeParams();
+    } catch (\Exception $e) {
+        return new Response(
+            json_encode([
+                'error'     =>  $e->errorType,
+                'message'   =>  $e->getMessage(),
+            ]),
+            $e->httpStatusCode,
+            $e->getHttpHeaders()
+        );
+    }
+
+    // Normally at this point you would show the user a sign-in screen and ask them to authorize the requested scopes
+
+    // ...
+
+    // ...
+
+    // ...
+
+    // Create a new authorize request which will respond with a redirect URI that the user will be redirected to
+
+    $redirectUri = $server->getGrantType('authorization_code')->newAuthorizeRequest('user', 1, $authParams);
+
+    $response = new Response('', 200, [
+        'Location'  =>  $redirectUri
+    ]);
+
+    return $response;
+});
+
+$router->post('/access_token', function (Request $request) use ($server) {
+
+    try {
+        $response = $server->issueAccessToken();
+
+        return new Response(json_encode($response), 200);
+    } catch (\Exception $e) {
+        return new Response(
+            json_encode([
+                'error'     =>  $e->errorType,
+                'message'   =>  $e->getMessage(),
+            ]),
+            $e->httpStatusCode,
+            $e->getHttpHeaders()
+        );
+    }
+
+});
+
+$dispatcher = $router->getDispatcher();
+
+try {
+    // A successful response
+    $response = $dispatcher->dispatch(
+        $request->getMethod(),
+        $request->getPathInfo()
+    );
+} catch (\Orno\Http\Exception $e) {
+    // A failed response
+    $response = $e->getJsonResponse();
+    $response->setContent(json_encode(['status_code' => $e->getStatusCode(), 'message' => $e->getMessage()]));
+} catch (\League\OAuth2\Server\Exception\OAuthException $e) {
+    $response = new Response(json_encode([
+        'error'     =>  $e->errorType,
+        'message'   =>  $e->getMessage(),
+    ]), $e->httpStatusCode);
+
+    foreach ($e->getHttpHeaders() as $header) {
+        $response->headers($header);
+    }
+} catch (\Exception $e) {
+    $response = new Orno\Http\Response();
+    $response->setStatusCode(500);
+    $response->setContent(json_encode(['status_code' => 500, 'message' => $e->getMessage()]));
+} finally {
+    // Return the response
+    $response->headers->set('Content-type', 'application/json');
+    $response->send();
+}

examples/relational/composer.json

@@ -0,0 +1,17 @@
+{
+    "require": {
+        "illuminate/database": "4.1.*",
+        "orno/route": "1.*",
+        "ircmaxell/password-compat": "1.0.2",
+        "league/event": "0.2.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "League\\OAuth2\\Server\\": "../../src/",
+            "RelationalExample\\": "."
+        },
+        "files": [
+            "config/db.php"
+        ]
+    }
+}

examples/relational/config/db.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace RelationalExample\Config;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+
+include __DIR__.'/../vendor/autoload.php';
+
+$capsule = new Capsule();
+
+$capsule->addConnection([
+    'driver'    => 'sqlite',
+    'database'  => __DIR__.'/oauth2.sqlite3',
+    'charset'   => 'utf8',
+    'collation' => 'utf8_unicode_ci',
+]);
+
+$capsule->setAsGlobal();

examples/relational/config/init.php

@@ -0,0 +1,249 @@
+<?php
+
+namespace RelationalExample\Config;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+
+include __DIR__.'/../vendor/autoload.php';
+
+@unlink(__DIR__.'/oauth2.sqlite3');
+touch(__DIR__.'/oauth2.sqlite3');
+
+Capsule::statement('PRAGMA foreign_keys = ON');
+
+/******************************************************************************/
+
+print 'Creating users table'.PHP_EOL;
+
+Capsule::schema()->create('users', function ($table) {
+    $table->increments('id');
+    $table->string('username');
+    $table->string('password');
+    $table->string('name');
+    $table->string('email');
+    $table->string('photo');
+});
+
+Capsule::table('users')->insert([
+    'username'  =>  'alexbilbie',
+    'password'  =>  password_hash('whisky', PASSWORD_DEFAULT),
+    'name'      =>  'Alex Bilbie',
+    'email'     =>  'hello@alexbilbie.com',
+    'photo'     =>  'https://s.gravatar.com/avatar/14902eb1dac66b8458ebbb481d80f0a3',
+]);
+
+Capsule::table('users')->insert([
+    'username'  =>  'philsturgeon',
+    'password'  =>  password_hash('cider', PASSWORD_DEFAULT),
+    'name'      =>  'Phil Sturgeon',
+    'email'     =>  'email@philsturgeon.co.uk',
+    'photo'     =>  'https://s.gravatar.com/avatar/14df293d6c5cd6f05996dfc606a6a951',
+]);
+
+/******************************************************************************/
+
+print 'Creating clients table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_clients', function ($table) {
+    $table->string('id');
+    $table->string('secret');
+    $table->string('name');
+    $table->primary('id');
+});
+
+Capsule::table('oauth_clients')->insert([
+    'id'        =>  'testclient',
+    'secret'    =>  'secret',
+    'name'      =>  'Test Client',
+]);
+
+/******************************************************************************/
+
+print 'Creating client redirect uris table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_client_redirect_uris', function ($table) {
+    $table->increments('id');
+    $table->string('client_id');
+    $table->string('redirect_uri');
+});
+
+Capsule::table('oauth_client_redirect_uris')->insert([
+    'client_id'     =>  'testclient',
+    'redirect_uri'  =>  'http://example.com/redirect',
+]);
+
+/******************************************************************************/
+
+print 'Creating scopes table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_scopes', function ($table) {
+    $table->string('id');
+    $table->string('description');
+    $table->primary('id');
+});
+
+Capsule::table('oauth_scopes')->insert([
+    'id'            =>  'basic',
+    'description'   =>  'Basic details about your account',
+]);
+
+Capsule::table('oauth_scopes')->insert([
+    'id'            =>  'email',
+    'description'   =>  'Your email address',
+]);
+
+Capsule::table('oauth_scopes')->insert([
+    'id'            =>  'photo',
+    'description'   =>  'Your photo',
+]);
+
+/******************************************************************************/
+
+print 'Creating sessions table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_sessions', function ($table) {
+    $table->increments('id')->unsigned();
+    $table->string('owner_type');
+    $table->string('owner_id');
+    $table->string('client_id');
+    $table->string('client_redirect_uri')->nullable();
+
+    $table->foreign('client_id')->references('id')->on('oauth_clients')->onDelete('cascade');
+});
+
+Capsule::table('oauth_sessions')->insert([
+    'owner_type'    =>  'client',
+    'owner_id'      =>  'testclient',
+    'client_id'     =>  'testclient',
+]);
+
+Capsule::table('oauth_sessions')->insert([
+    'owner_type'    =>  'user',
+    'owner_id'      =>  '1',
+    'client_id'     =>  'testclient',
+]);
+
+Capsule::table('oauth_sessions')->insert([
+    'owner_type'    =>  'user',
+    'owner_id'      =>  '2',
+    'client_id'     =>  'testclient',
+]);
+
+/******************************************************************************/
+
+print 'Creating access tokens table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_access_tokens', function ($table) {
+    $table->string('access_token')->primary();
+    $table->integer('session_id')->unsigned();
+    $table->integer('expire_time');
+
+    $table->foreign('session_id')->references('id')->on('oauth_sessions')->onDelete('cascade');
+});
+
+Capsule::table('oauth_access_tokens')->insert([
+    'access_token'  =>  'iamgod',
+    'session_id'    =>  '1',
+    'expire_time'   =>  time() + 86400,
+]);
+
+Capsule::table('oauth_access_tokens')->insert([
+    'access_token'  =>  'iamalex',
+    'session_id'    =>  '2',
+    'expire_time'   =>  time() + 86400,
+]);
+
+Capsule::table('oauth_access_tokens')->insert([
+    'access_token'  =>  'iamphil',
+    'session_id'    =>  '3',
+    'expire_time'   =>  time() + 86400,
+]);
+
+/******************************************************************************/
+
+print 'Creating refresh tokens table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_refresh_tokens', function ($table) {
+    $table->string('refresh_token')->primary();
+    $table->integer('expire_time');
+    $table->string('access_token');
+
+    $table->foreign('access_token')->references('access_token')->on('oauth_access_tokens')->onDelete('cascade');
+});
+
+/******************************************************************************/
+
+print 'Creating auth codes table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_auth_codes', function ($table) {
+    $table->string('auth_code')->primary();
+    $table->integer('session_id')->unsigned();
+    $table->integer('expire_time');
+    $table->string('client_redirect_uri');
+
+    $table->foreign('session_id')->references('id')->on('oauth_sessions')->onDelete('cascade');
+});
+
+/******************************************************************************/
+
+print 'Creating oauth access token scopes table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_access_token_scopes', function ($table) {
+    $table->increments('id')->unsigned();
+    $table->string('access_token');
+    $table->string('scope');
+
+    $table->foreign('access_token')->references('access_token')->on('oauth_access_tokens')->onDelete('cascade');
+    $table->foreign('scope')->references('id')->on('oauth_scopes')->onDelete('cascade');
+});
+
+Capsule::table('oauth_access_token_scopes')->insert([
+    'access_token'  =>  'iamgod',
+    'scope'         =>  'basic',
+]);
+
+Capsule::table('oauth_access_token_scopes')->insert([
+    'access_token'  =>  'iamgod',
+    'scope'         =>  'email',
+]);
+
+Capsule::table('oauth_access_token_scopes')->insert([
+    'access_token'  =>  'iamgod',
+    'scope'         =>  'photo',
+]);
+
+Capsule::table('oauth_access_token_scopes')->insert([
+    'access_token'  =>  'iamphil',
+    'scope'         =>  'email',
+]);
+
+Capsule::table('oauth_access_token_scopes')->insert([
+    'access_token'  =>  'iamalex',
+    'scope'         =>  'photo',
+]);
+
+/******************************************************************************/
+
+print 'Creating oauth auth code scopes table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_auth_code_scopes', function ($table) {
+    $table->increments('id');
+    $table->string('auth_code');
+    $table->string('scope');
+
+    $table->foreign('auth_code')->references('auth_code')->on('oauth_auth_codes')->onDelete('cascade');
+    $table->foreign('scope')->references('id')->on('oauth_scopes')->onDelete('cascade');
+});
+
+/******************************************************************************/
+
+print 'Creating oauth session scopes table'.PHP_EOL;
+
+Capsule::schema()->create('oauth_session_scopes', function ($table) {
+    $table->increments('id')->unsigned();
+    $table->integer('session_id')->unsigned();
+    $table->string('scope');
+
+    $table->foreign('session_id')->references('id')->on('oauth_sessions')->onDelete('cascade');
+    $table->foreign('scope')->references('id')->on('oauth_scopes')->onDelete('cascade');
+});

examples/relational/other_grants.php

@@ -0,0 +1,97 @@
+<?php
+
+use Orno\Http\Request;
+use Orno\Http\Response;
+use RelationalExample\Model;
+use RelationalExample\Storage;
+
+include __DIR__.'/vendor/autoload.php';
+
+// Routing setup
+$request = (new Request())->createFromGlobals();
+$router = new \Orno\Route\RouteCollection();
+$router->setStrategy(\Orno\Route\RouteStrategyInterface::RESTFUL_STRATEGY);
+
+// Set up the OAuth 2.0 authorization server
+$server = new \League\OAuth2\Server\AuthorizationServer();
+$server->setSessionStorage(new Storage\SessionStorage());
+$server->setAccessTokenStorage(new Storage\AccessTokenStorage());
+$server->setRefreshTokenStorage(new Storage\RefreshTokenStorage());
+$server->setClientStorage(new Storage\ClientStorage());
+$server->setScopeStorage(new Storage\ScopeStorage());
+$server->setAuthCodeStorage(new Storage\AuthCodeStorage());
+
+$clientCredentials = new \League\OAuth2\Server\Grant\ClientCredentialsGrant();
+$server->addGrantType($clientCredentials);
+
+$passwordGrant = new \League\OAuth2\Server\Grant\PasswordGrant();
+$passwordGrant->setVerifyCredentialsCallback(function ($username, $password) {
+    $result = (new Model\Users())->get($username);
+    if (count($result) !== 1) {
+        return false;
+    }
+
+    if (password_verify($password, $result[0]['password'])) {
+        return $username;
+    }
+
+    return false;
+});
+$server->addGrantType($passwordGrant);
+
+$refrehTokenGrant = new \League\OAuth2\Server\Grant\RefreshTokenGrant();
+$server->addGrantType($refrehTokenGrant);
+
+// Routing setup
+$request = (new Request())->createFromGlobals();
+$router = new \Orno\Route\RouteCollection();
+
+$router->post('/access_token', function (Request $request) use ($server) {
+
+    try {
+        $response = $server->issueAccessToken();
+
+        return new Response(json_encode($response), 200);
+    } catch (\Exception $e) {
+        return new Response(
+            json_encode([
+                'error'     =>  $e->errorType,
+                'message'   =>  $e->getMessage(),
+            ]),
+            $e->httpStatusCode,
+            $e->getHttpHeaders()
+        );
+    }
+
+});
+
+$dispatcher = $router->getDispatcher();
+
+try {
+    // A successful response
+    $response = $dispatcher->dispatch(
+        $request->getMethod(),
+        $request->getPathInfo()
+    );
+} catch (\Orno\Http\Exception $e) {
+    // A failed response
+    $response = $e->getJsonResponse();
+    $response->setContent(json_encode(['status_code' => $e->getStatusCode(), 'message' => $e->getMessage()]));
+} catch (\League\OAuth2\Server\Exception\OAuthException $e) {
+    $response = new Response(json_encode([
+        'error'     =>  $e->errorType,
+        'message'   =>  $e->getMessage(),
+    ]), $e->httpStatusCode);
+
+    foreach ($e->getHttpHeaders() as $header) {
+        $response->headers($header);
+    }
+} catch (\Exception $e) {
+    $response = new Orno\Http\Response();
+    $response->setStatusCode(500);
+    $response->setContent(json_encode(['status_code' => 500, 'message' => $e->getMessage()]));
+} finally {
+    // Return the response
+    $response->headers->set('Content-type', 'application/json');
+    $response->send();
+}

license.txt

@@ -1,20 +1,20 @@
 MIT License
 
-Copyright (C) 2012 University of Lincoln
+Copyright (C) Alex Bilbie
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of 
-this software and associated documentation files (the "Software"), to deal in 
-the Software without restriction, including without limitation the rights to 
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 the Software, and to permit persons to whom the Software is furnished to do so,
 subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all 
+The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

phpunit.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit colors="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" stopOnError="true" stopOnFailure="true" stopOnIncomplete="false" stopOnSkipped="false" bootstrap="tests/unit/Bootstrap.php">
+	<testsuites>
+		<testsuite name="Tests">
+		   <directory>./tests/unit/</directory>
+	   </testsuite>
+	</testsuites>
+	<filter>
+		<whitelist addUncoveredFilesFromWhitelist="true">
+			<directory suffix=".php">src</directory>
+		</whitelist>
+	</filter>
+	<logging>
+		<!-- <log type="coverage-text" target="php://stdout" title="thephpleague/oauth2-server" charset="UTF-8" yui="true" highlight="true" lowUpperBound="60" highLowerBound="90"/> -->
+		<log type="coverage-html" target="build/coverage" title="thephpleague/oauth2-server" charset="UTF-8" yui="true" highlight="true" lowUpperBound="60" highLowerBound="90"/>
+	</logging>
+</phpunit>

sql/database.sql

@@ -1,59 +0,0 @@
--- Create syntax for TABLE 'clients'
-CREATE TABLE `clients` (
-  `id` varchar(40) NOT NULL DEFAULT '',
-  `secret` varchar(40) NOT NULL DEFAULT '',
-  `name` varchar(255) NOT NULL DEFAULT '',
-  `auto_approve` tinyint(1) NOT NULL DEFAULT '0',
-  PRIMARY KEY (`id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-
--- Create syntax for TABLE 'client_endpoints'
-CREATE TABLE `client_endpoints` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
-  `client_id` varchar(40) NOT NULL DEFAULT '',
-  `redirect_uri` varchar(255) DEFAULT NULL,
-  PRIMARY KEY (`id`),
-  KEY `client_id` (`client_id`),
-  CONSTRAINT `client_endpoints_ibfk_1` FOREIGN KEY (`client_id`) REFERENCES `clients` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-
--- Create syntax for TABLE 'oauth_sessions'
-CREATE TABLE `oauth_sessions` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
-  `client_id` varchar(40) NOT NULL DEFAULT '',
-  `redirect_uri` varchar(250) NOT NULL DEFAULT '',
-  `owner_type` enum('user','client') NOT NULL DEFAULT 'user',
-  `owner_id` varchar(255) DEFAULT NULL,
-  `auth_code` varchar(40) DEFAULT '',
-  `access_token` varchar(40) DEFAULT '',
-  `access_token_expires` int(10) DEFAULT NULL,
-  `stage` enum('requested','granted') NOT NULL DEFAULT 'requested',
-  `first_requested` int(10) unsigned NOT NULL,
-  `last_updated` int(10) unsigned NOT NULL,
-  PRIMARY KEY (`id`),
-  KEY `client_id` (`client_id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-
--- Create syntax for TABLE 'scopes'
-CREATE TABLE `scopes` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
-  `scope` varchar(255) NOT NULL DEFAULT '',
-  `name` varchar(255) NOT NULL DEFAULT '',
-  `description` varchar(255) DEFAULT '',
-  PRIMARY KEY (`id`),
-  UNIQUE KEY `scope` (`scope`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-
--- Create syntax for TABLE 'oauth_session_scopes'
-CREATE TABLE `oauth_session_scopes` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
-  `session_id` int(11) unsigned NOT NULL,
-  `access_token` varchar(40) NOT NULL DEFAULT '',
-  `scope` varchar(255) NOT NULL DEFAULT '',
-  PRIMARY KEY (`id`),
-  KEY `session_id` (`session_id`),
-  KEY `access_token` (`access_token`),
-  KEY `scope` (`scope`),
-  CONSTRAINT `oauth_session_scopes_ibfk_3` FOREIGN KEY (`scope`) REFERENCES `scopes` (`scope`) ON DELETE CASCADE ON UPDATE CASCADE,
-  CONSTRAINT `oauth_session_scopes_ibfk_4` FOREIGN KEY (`session_id`) REFERENCES `oauth_sessions` (`id`) ON DELETE CASCADE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;

src/AbstractServer.php

@@ -0,0 +1,358 @@
+<?php
+/**
+ * OAuth 2.0 Abstract Server
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server;
+
+use League\Event\Emitter;
+use League\OAuth2\Server\Storage\AccessTokenInterface;
+use League\OAuth2\Server\Storage\AuthCodeInterface;
+use League\OAuth2\Server\Storage\ClientInterface;
+use League\OAuth2\Server\Storage\MacTokenInterface;
+use League\OAuth2\Server\Storage\RefreshTokenInterface;
+use League\OAuth2\Server\Storage\ScopeInterface;
+use League\OAuth2\Server\Storage\SessionInterface;
+use League\OAuth2\Server\TokenType\TokenTypeInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * OAuth 2.0 Resource Server
+ */
+abstract class AbstractServer
+{
+    /**
+     * The request object
+     *
+     * @var \Symfony\Component\HttpFoundation\Request
+     */
+    protected $request;
+
+    /**
+     * Session storage
+     *
+     * @var \League\OAuth2\Server\Storage\SessionInterface
+     */
+    protected $sessionStorage;
+
+    /**
+     * Access token storage
+     *
+     * @var \League\OAuth2\Server\Storage\AccessTokenInterface
+     */
+    protected $accessTokenStorage;
+
+    /**
+     * Refresh token storage
+     *
+     * @var \League\OAuth2\Server\Storage\RefreshTokenInterface
+     */
+    protected $refreshTokenStorage;
+
+    /**
+     * Auth code storage
+     *
+     * @var \League\OAuth2\Server\Storage\AuthCodeInterface
+     */
+    protected $authCodeStorage;
+
+    /**
+     * Scope storage
+     *
+     * @var \League\OAuth2\Server\Storage\ScopeInterface
+     */
+    protected $scopeStorage;
+
+    /**
+     * Client storage
+     *
+     * @var \League\OAuth2\Server\Storage\ClientInterface
+     */
+    protected $clientStorage;
+
+    /**
+     * @var \League\OAuth2\Server\Storage\MacTokenInterface
+     */
+    protected $macStorage;
+
+    /**
+     * Token type
+     *
+     * @var \League\OAuth2\Server\TokenType\TokenTypeInterface
+     */
+    protected $tokenType;
+
+    /**
+     * Event emitter
+     *
+     * @var \League\Event\Emitter
+     */
+    protected $eventEmitter;
+
+    /**
+     * Abstract server constructor
+     */
+    public function __construct()
+    {
+        $this->setEventEmitter();
+    }
+
+    /**
+     * Set an event emitter
+     *
+     * @param object $emitter Event emitter object
+     */
+    public function setEventEmitter($emitter = null)
+    {
+        if ($emitter === null) {
+            $this->eventEmitter = new Emitter();
+        } else {
+            $this->eventEmitter = $emitter;
+        }
+    }
+
+    /**
+     * Add an event listener to the event emitter
+     *
+     * @param string   $eventName Event name
+     * @param callable $listener  Callable function or method
+     * @param int      $priority  Priority of event listener
+     */
+    public function addEventListener($eventName, callable $listener, $priority = Emitter::P_NORMAL)
+    {
+        $this->eventEmitter->addListener($eventName, $listener, $priority);
+    }
+
+    /**
+     * Returns the event emitter
+     *
+     * @return \League\Event\Emitter
+     */
+    public function getEventEmitter()
+    {
+        return $this->eventEmitter;
+    }
+
+    /**
+     * Sets the Request Object
+     *
+     * @param \Symfony\Component\HttpFoundation\Request The Request Object
+     *
+     * @return self
+     */
+    public function setRequest($request)
+    {
+        $this->request = $request;
+
+        return $this;
+    }
+
+    /**
+     * Gets the Request object. It will create one from the globals if one is not set.
+     *
+     * @return \Symfony\Component\HttpFoundation\Request
+     */
+    public function getRequest()
+    {
+        if ($this->request === null) {
+            $this->request = Request::createFromGlobals();
+        }
+
+        return $this->request;
+    }
+
+    /**
+     * Set the client storage
+     *
+     * @param \League\OAuth2\Server\Storage\ClientInterface $storage
+     *
+     * @return self
+     */
+    public function setClientStorage(ClientInterface $storage)
+    {
+        $storage->setServer($this);
+        $this->clientStorage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Set the session storage
+     *
+     * @param \League\OAuth2\Server\Storage\SessionInterface $storage
+     *
+     * @return self
+     */
+    public function setSessionStorage(SessionInterface $storage)
+    {
+        $storage->setServer($this);
+        $this->sessionStorage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Set the access token storage
+     *
+     * @param \League\OAuth2\Server\Storage\AccessTokenInterface $storage
+     *
+     * @return self
+     */
+    public function setAccessTokenStorage(AccessTokenInterface $storage)
+    {
+        $storage->setServer($this);
+        $this->accessTokenStorage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Set the refresh token storage
+     *
+     * @param \League\OAuth2\Server\Storage\RefreshTokenInterface $storage
+     *
+     * @return self
+     */
+    public function setRefreshTokenStorage(RefreshTokenInterface $storage)
+    {
+        $storage->setServer($this);
+        $this->refreshTokenStorage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Set the auth code storage
+     *
+     * @param \League\OAuth2\Server\Storage\AuthCodeInterface $storage
+     *
+     * @return self
+     */
+    public function setAuthCodeStorage(AuthCodeInterface $storage)
+    {
+        $storage->setServer($this);
+        $this->authCodeStorage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Set the scope storage
+     *
+     * @param \League\OAuth2\Server\Storage\ScopeInterface $storage
+     *
+     * @return self
+     */
+    public function setScopeStorage(ScopeInterface $storage)
+    {
+        $storage->setServer($this);
+        $this->scopeStorage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Return the client storage
+     *
+     * @return \League\OAuth2\Server\Storage\ClientInterface
+     */
+    public function getClientStorage()
+    {
+        return $this->clientStorage;
+    }
+
+    /**
+     * Return the scope storage
+     *
+     * @return \League\OAuth2\Server\Storage\ScopeInterface
+     */
+    public function getScopeStorage()
+    {
+        return $this->scopeStorage;
+    }
+
+    /**
+     * Return the session storage
+     *
+     * @return \League\OAuth2\Server\Storage\SessionInterface
+     */
+    public function getSessionStorage()
+    {
+        return $this->sessionStorage;
+    }
+
+    /**
+     * Return the refresh token storage
+     *
+     * @return \League\OAuth2\Server\Storage\RefreshTokenInterface
+     */
+    public function getRefreshTokenStorage()
+    {
+        return $this->refreshTokenStorage;
+    }
+
+    /**
+     * Return the access token storage
+     *
+     * @return \League\OAuth2\Server\Storage\AccessTokenInterface
+     */
+    public function getAccessTokenStorage()
+    {
+        return $this->accessTokenStorage;
+    }
+
+    /**
+     * Return the auth code storage
+     *
+     * @return \League\OAuth2\Server\Storage\AuthCodeInterface
+     */
+    public function getAuthCodeStorage()
+    {
+        return $this->authCodeStorage;
+    }
+
+    /**
+     * Set the access token type
+     *
+     * @param TokenTypeInterface $tokenType The token type
+     *
+     * @return void
+     */
+    public function setTokenType(TokenTypeInterface $tokenType)
+    {
+        $tokenType->setServer($this);
+        $this->tokenType = $tokenType;
+    }
+
+    /**
+     * Get the access token type
+     *
+     * @return TokenTypeInterface
+     */
+    public function getTokenType()
+    {
+        return $this->tokenType;
+    }
+
+    /**
+     * @return MacTokenInterface
+     */
+    public function getMacStorage()
+    {
+        return $this->macStorage;
+    }
+
+    /**
+     * @param MacTokenInterface $macStorage
+     */
+    public function setMacStorage(MacTokenInterface $macStorage)
+    {
+        $this->macStorage = $macStorage;
+    }
+}

src/AuthorizationServer.php

@@ -0,0 +1,295 @@
+<?php
+/**
+ * OAuth 2.0 Authorization Server
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server;
+
+use League\OAuth2\Server\Grant\GrantTypeInterface;
+use League\OAuth2\Server\TokenType\Bearer;
+
+/**
+ * OAuth 2.0 authorization server class
+ */
+class AuthorizationServer extends AbstractServer
+{
+    /**
+     * The delimiter between scopes specified in the scope query string parameter
+     * The OAuth 2 specification states it should be a space but most use a comma
+     *
+     * @var string
+     */
+    protected $scopeDelimiter = ' ';
+
+    /**
+     * The TTL (time to live) of an access token in seconds (default: 3600)
+     *
+     * @var integer
+     */
+    protected $accessTokenTTL = 3600;
+
+    /**
+     * The registered grant response types
+     *
+     * @var array
+     */
+    protected $responseTypes = [];
+
+    /**
+     * The registered grant types
+     *
+     * @var array
+     */
+    protected $grantTypes = [];
+
+    /**
+     * Require the "scope" parameter to be in checkAuthoriseParams()
+     *
+     * @var boolean
+     */
+    protected $requireScopeParam = false;
+
+    /**
+     * Default scope(s) to be used if none is provided
+     *
+     * @var string|array
+     */
+    protected $defaultScope;
+
+    /**
+     * Require the "state" parameter to be in checkAuthoriseParams()
+     *
+     * @var boolean
+     */
+    protected $requireStateParam = false;
+
+    /**
+     * Create a new OAuth2 authorization server
+     *
+     * @return self
+     */
+    public function __construct()
+    {
+        // Set Bearer as the default token type
+        $this->setTokenType(new Bearer());
+
+        parent::__construct();
+
+        return $this;
+    }
+
+    /**
+     * Enable support for a grant
+     *
+     * @param GrantTypeInterface $grantType  A grant class which conforms to Interface/GrantTypeInterface
+     * @param null|string        $identifier An identifier for the grant (autodetected if not passed)
+     *
+     * @return self
+     */
+    public function addGrantType(GrantTypeInterface $grantType, $identifier = null)
+    {
+        if (is_null($identifier)) {
+            $identifier = $grantType->getIdentifier();
+        }
+
+        // Inject server into grant
+        $grantType->setAuthorizationServer($this);
+
+        $this->grantTypes[$identifier] = $grantType;
+
+        if (!is_null($grantType->getResponseType())) {
+            $this->responseTypes[] = $grantType->getResponseType();
+        }
+
+        return $this;
+    }
+
+    /**
+     * Check if a grant type has been enabled
+     *
+     * @param string $identifier The grant type identifier
+     *
+     * @return boolean Returns "true" if enabled, "false" if not
+     */
+    public function hasGrantType($identifier)
+    {
+        return (array_key_exists($identifier, $this->grantTypes));
+    }
+
+    /**
+     * Returns response types
+     *
+     * @return array
+     */
+    public function getResponseTypes()
+    {
+        return $this->responseTypes;
+    }
+
+    /**
+     * Require the "scope" parameter in checkAuthoriseParams()
+     *
+     * @param boolean $require
+     *
+     * @return self
+     */
+    public function requireScopeParam($require = true)
+    {
+        $this->requireScopeParam = $require;
+
+        return $this;
+    }
+
+    /**
+     * Is the scope parameter required?
+     *
+     * @return bool
+     */
+    public function scopeParamRequired()
+    {
+        return $this->requireScopeParam;
+    }
+
+    /**
+     * Default scope to be used if none is provided and requireScopeParam() is false
+     *
+     * @param string $default Name of the default scope
+     *
+     * @return self
+     */
+    public function setDefaultScope($default = null)
+    {
+        $this->defaultScope = $default;
+
+        return $this;
+    }
+
+    /**
+     * Default scope to be used if none is provided and requireScopeParam is false
+     *
+     * @return string|null
+     */
+    public function getDefaultScope()
+    {
+        return $this->defaultScope;
+    }
+
+    /**
+     * Require the "state" parameter in checkAuthoriseParams()
+     *
+     * @return bool
+     */
+    public function stateParamRequired()
+    {
+        return $this->requireStateParam;
+    }
+
+    /**
+     * Require the "state" parameter in checkAuthoriseParams()
+     *
+     * @param boolean $require
+     *
+     * @return self
+     */
+    public function requireStateParam($require = true)
+    {
+        $this->requireStateParam = $require;
+
+        return $this;
+    }
+
+    /**
+     * Get the scope delimiter
+     *
+     * @return string The scope delimiter (default: ",")
+     */
+    public function getScopeDelimiter()
+    {
+        return $this->scopeDelimiter;
+    }
+
+    /**
+     * Set the scope delimiter
+     *
+     * @param string $scopeDelimiter
+     *
+     * @return self
+     */
+    public function setScopeDelimiter($scopeDelimiter = ' ')
+    {
+        $this->scopeDelimiter = $scopeDelimiter;
+
+        return $this;
+    }
+
+    /**
+     * Get the TTL for an access token
+     *
+     * @return int The TTL
+     */
+    public function getAccessTokenTTL()
+    {
+        return $this->accessTokenTTL;
+    }
+
+    /**
+     * Set the TTL for an access token
+     *
+     * @param int $accessTokenTTL The new TTL
+     *
+     * @return self
+     */
+    public function setAccessTokenTTL($accessTokenTTL = 3600)
+    {
+        $this->accessTokenTTL = $accessTokenTTL;
+
+        return $this;
+    }
+
+    /**
+     * Issue an access token
+     *
+     * @return array Authorise request parameters
+     *
+     * @throws
+     */
+    public function issueAccessToken()
+    {
+        $grantType = $this->getRequest()->request->get('grant_type');
+        if (is_null($grantType)) {
+            throw new Exception\InvalidRequestException('grant_type');
+        }
+
+        // Ensure grant type is one that is recognised and is enabled
+        if (!in_array($grantType, array_keys($this->grantTypes))) {
+            throw new Exception\UnsupportedGrantTypeException($grantType);
+        }
+
+        // Complete the flow
+        return $this->getGrantType($grantType)->completeFlow();
+    }
+
+    /**
+     * Return a grant type class
+     *
+     * @param string $grantType The grant type identifier
+     *
+     * @return Grant\GrantTypeInterface
+     *
+     * @throws
+     */
+    public function getGrantType($grantType)
+    {
+        if (isset($this->grantTypes[$grantType])) {
+            return $this->grantTypes[$grantType];
+        }
+
+        throw new Exception\InvalidGrantException($grantType);
+    }
+}

src/Entity/AbstractTokenEntity.php

@@ -0,0 +1,209 @@
+<?php
+/**
+ * OAuth 2.0 Abstract token
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+use League\OAuth2\Server\AbstractServer;
+use League\OAuth2\Server\Util\SecureKey;
+
+/**
+ * Abstract token class
+ */
+abstract class AbstractTokenEntity
+{
+    /**
+     * Token identifier
+     *
+     * @var string
+     */
+    protected $id;
+
+    /**
+     * Associated session
+     *
+     * @var \League\OAuth2\Server\Entity\SessionEntity
+     */
+    protected $session;
+
+    /**
+     * Session scopes
+     *
+     * @var \League\OAuth2\Server\Entity\ScopeEntity[]
+     */
+    protected $scopes;
+
+    /**
+     * Token expire time
+     *
+     * @var int
+     */
+    protected $expireTime = 0;
+
+    /**
+     * Authorization or resource server
+     *
+     * @var \League\OAuth2\Server\AbstractServer
+     */
+    protected $server;
+
+    /**
+     * __construct
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     *
+     * @return self
+     */
+    public function __construct(AbstractServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * Set session
+     *
+     * @param \League\OAuth2\Server\Entity\SessionEntity $session
+     *
+     * @return self
+     */
+    public function setSession(SessionEntity $session)
+    {
+        $this->session = $session;
+
+        return $this;
+    }
+
+    /**
+     * Set the expire time of the token
+     *
+     * @param integer $expireTime Unix time stamp
+     *
+     * @return self
+     */
+    public function setExpireTime($expireTime)
+    {
+        $this->expireTime = $expireTime;
+
+        return $this;
+    }
+
+    /**
+     * Return token expire time
+     *
+     * @return int
+     */
+    public function getExpireTime()
+    {
+        return $this->expireTime;
+    }
+
+    /**
+     * Is the token expired?
+     *
+     * @return bool
+     */
+    public function isExpired()
+    {
+        return ((time() - $this->expireTime) > 0);
+    }
+
+    /**
+     * Set token ID
+     *
+     * @param string $id Token ID
+     *
+     * @return self
+     */
+    public function setId($id = null)
+    {
+        $this->id = ($id !== null) ? $id : SecureKey::generate();
+
+        return $this;
+    }
+
+    /**
+     * Get the token ID
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * Associate a scope
+     *
+     * @param \League\OAuth2\Server\Entity\ScopeEntity $scope
+     *
+     * @return self
+     */
+    public function associateScope(ScopeEntity $scope)
+    {
+        if (!isset($this->scopes[$scope->getId()])) {
+            $this->scopes[$scope->getId()] = $scope;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Format the local scopes array
+     *
+     * @param  \League\OAuth2\Server\Entity\ScopeEntity[]
+     *
+     * @return array
+     */
+    protected function formatScopes($unformatted = [])
+    {
+        if (is_null($unformatted)) {
+            return [];
+        }
+
+        $scopes = [];
+        foreach ($unformatted as $scope) {
+            if ($scope instanceof ScopeEntity) {
+                $scopes[$scope->getId()] = $scope;
+            }
+        }
+
+        return $scopes;
+    }
+
+    /**
+     * Returns the token as a string if the object is cast as a string
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        if ($this->id === null) {
+            return '';
+        }
+
+        return $this->id;
+    }
+
+    /**
+     * Expire the token
+     *
+     * @return void
+     */
+    abstract public function expire();
+
+    /**
+     * Save the token
+     *
+     * @return void
+     */
+    abstract public function save();
+}

src/Entity/AccessTokenEntity.php

@@ -0,0 +1,93 @@
+<?php
+/**
+ * OAuth 2.0 Access token entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+/**
+ * Access token entity class
+ */
+class AccessTokenEntity extends AbstractTokenEntity
+{
+    /**
+     * Get session
+     *
+     * @return \League\OAuth2\Server\Entity\SessionEntity
+     */
+    public function getSession()
+    {
+        if ($this->session instanceof SessionEntity) {
+            return $this->session;
+        }
+
+        $this->session = $this->server->getSessionStorage()->getByAccessToken($this);
+
+        return $this->session;
+    }
+
+    /**
+     * Check if access token has an associated scope
+     *
+     * @param string $scope Scope to check
+     *
+     * @return bool
+     */
+    public function hasScope($scope)
+    {
+        if ($this->scopes === null) {
+            $this->getScopes();
+        }
+
+        return isset($this->scopes[$scope]);
+    }
+
+    /**
+     * Return all scopes associated with the access token
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[]
+     */
+    public function getScopes()
+    {
+        if ($this->scopes === null) {
+            $this->scopes = $this->formatScopes(
+                $this->server->getAccessTokenStorage()->getScopes($this)
+            );
+        }
+
+        return $this->scopes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save()
+    {
+        $this->server->getAccessTokenStorage()->create(
+            $this->getId(),
+            $this->getExpireTime(),
+            $this->getSession()->getId()
+        );
+
+        // Associate the scope with the token
+        foreach ($this->getScopes() as $scope) {
+            $this->server->getAccessTokenStorage()->associateScope($this, $scope);
+        }
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function expire()
+    {
+        $this->server->getAccessTokenStorage()->delete($this);
+    }
+}

src/Entity/AuthCodeEntity.php

@@ -0,0 +1,128 @@
+<?php
+/**
+ * OAuth 2.0 Auth code entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+/**
+ * Auth Code entity class
+ */
+class AuthCodeEntity extends AbstractTokenEntity
+{
+    /**
+     * Redirect URI
+     *
+     * @var string
+     */
+    protected $redirectUri = '';
+
+    /**
+     * Set the redirect URI for the authorization request
+     *
+     * @param string $redirectUri
+     *
+     * @return self
+     */
+    public function setRedirectUri($redirectUri)
+    {
+        $this->redirectUri = $redirectUri;
+
+        return $this;
+    }
+
+    /**
+     * Get the redirect URI
+     *
+     * @return string
+     */
+    public function getRedirectUri()
+    {
+        return $this->redirectUri;
+    }
+
+    /**
+     * Generate a redirect URI
+     *
+     * @param string $state          The state parameter if set by the client
+     * @param string $queryDelimeter The query delimiter ('?' for auth code grant, '#' for implicit grant)
+     *
+     * @return string
+     */
+    public function generateRedirectUri($state = null, $queryDelimeter = '?')
+    {
+        $uri = $this->getRedirectUri();
+        $uri .= (strstr($this->getRedirectUri(), $queryDelimeter) === false) ? $queryDelimeter : '&';
+
+        return $uri.http_build_query([
+            'code'  =>  $this->getId(),
+            'state' =>  $state,
+        ]);
+    }
+
+    /**
+     * Get session
+     *
+     * @return \League\OAuth2\Server\Entity\SessionEntity
+     */
+    public function getSession()
+    {
+        if ($this->session instanceof SessionEntity) {
+            return $this->session;
+        }
+
+        $this->session = $this->server->getSessionStorage()->getByAuthCode($this);
+
+        return $this->session;
+    }
+
+    /**
+     * Return all scopes associated with the session
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[]
+     */
+    public function getScopes()
+    {
+        if ($this->scopes === null) {
+            $this->scopes = $this->formatScopes(
+                $this->server->getAuthCodeStorage()->getScopes($this)
+            );
+        }
+
+        return $this->scopes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save()
+    {
+        $this->server->getAuthCodeStorage()->create(
+            $this->getId(),
+            $this->getExpireTime(),
+            $this->getSession()->getId(),
+            $this->getRedirectUri()
+        );
+
+        // Associate the scope with the token
+        foreach ($this->getScopes() as $scope) {
+            $this->server->getAuthCodeStorage()->associateScope($this, $scope);
+        }
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function expire()
+    {
+        $this->server->getAuthCodeStorage()->delete($this);
+    }
+}

src/Entity/ClientEntity.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * OAuth 2.0 Client entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+use League\OAuth2\Server\AbstractServer;
+
+/**
+ * Client entity class
+ */
+class ClientEntity
+{
+    use EntityTrait;
+
+    /**
+     * Client identifier
+     *
+     * @var string
+     */
+    protected $id = null;
+
+    /**
+     * Client secret
+     *
+     * @var string
+     */
+    protected $secret = null;
+
+    /**
+     * Client name
+     *
+     * @var string
+     */
+    protected $name = null;
+
+    /**
+     * Client redirect URI
+     *
+     * @var string
+     */
+    protected $redirectUri = null;
+
+    /**
+     * Authorization or resource server
+     *
+     * @var \League\OAuth2\Server\AbstractServer
+     */
+    protected $server;
+
+    /**
+     * __construct
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     *
+     * @return self
+     */
+    public function __construct(AbstractServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * Return the client identifier
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * Return the client secret
+     *
+     * @return string
+     */
+    public function getSecret()
+    {
+        return $this->secret;
+    }
+
+    /**
+     * Get the client name
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Returnt the client redirect URI
+     *
+     * @return string
+     */
+    public function getRedirectUri()
+    {
+        return $this->redirectUri;
+    }
+}

src/Entity/EntityTrait.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * OAuth 2.0 Entity trait
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+trait EntityTrait
+{
+    /**
+     * Hydrate an entity with properites
+     *
+     * @param array $properties
+     *
+     * @return self
+     */
+    public function hydrate(array $properties)
+    {
+        foreach ($properties as $prop => $val) {
+            if (property_exists($this, $prop)) {
+                $this->{$prop} = $val;
+            }
+        }
+
+        return $this;
+    }
+}

src/Entity/RefreshTokenEntity.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * OAuth 2.0 Refresh token entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+/**
+ * Refresh token entity class
+ */
+class RefreshTokenEntity extends AbstractTokenEntity
+{
+    /**
+     * Access token associated to refresh token
+     *
+     * @var \League\OAuth2\Server\Entity\AccessTokenEntity
+     */
+    protected $accessTokenEntity;
+
+    /**
+     * Id of the access token
+     *
+     * @var string
+     */
+    protected $accessTokenId;
+
+    /**
+     * Set the ID of the associated access token
+     *
+     * @param string $accessTokenId
+     *
+     * @return self
+     */
+    public function setAccessTokenId($accessTokenId)
+    {
+        $this->accessTokenId = $accessTokenId;
+
+        return $this;
+    }
+
+    /**
+     * Associate an access token
+     *
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity $accessTokenEntity
+     *
+     * @return self
+     */
+    public function setAccessToken(AccessTokenEntity $accessTokenEntity)
+    {
+        $this->accessTokenEntity = $accessTokenEntity;
+
+        return $this;
+    }
+
+    /**
+     * Return access token
+     *
+     * @return AccessTokenEntity
+     */
+    public function getAccessToken()
+    {
+        if (! $this->accessTokenEntity instanceof AccessTokenEntity) {
+            $this->accessTokenEntity = $this->server->getAccessTokenStorage()->get($this->accessTokenId);
+        }
+
+        return $this->accessTokenEntity;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save()
+    {
+        $this->server->getRefreshTokenStorage()->create(
+            $this->getId(),
+            $this->getExpireTime(),
+            $this->getAccessToken()->getId()
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function expire()
+    {
+        $this->server->getRefreshTokenStorage()->delete($this);
+    }
+}

src/Entity/ScopeEntity.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * OAuth 2.0 scope entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+use League\OAuth2\Server\AbstractServer;
+
+/**
+ * Scope entity class
+ */
+class ScopeEntity implements \JsonSerializable
+{
+    use EntityTrait;
+
+    /**
+     * Scope identifier
+     *
+     * @var string
+     */
+    protected $id;
+
+    /**
+     * Scope description
+     *
+     * @var string
+     */
+    protected $description;
+
+    /**
+     * Authorization or resource server
+     *
+     * @var \League\OAuth2\Server\AbstractServer
+     */
+    protected $server;
+
+    /**
+     * __construct
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     *
+     * @return self
+     */
+    public function __construct(AbstractServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * Return the scope identifer
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * Return the scope's description
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+
+    /**
+     * Returns a JSON object when entity is passed into json_encode
+     *
+     * @return array
+     */
+    public function jsonSerialize()
+    {
+        return [
+            'id'    =>  $this->getId(),
+            'description'   =>  $this->getDescription()
+        ];
+    }
+}

src/Entity/SessionEntity.php

@@ -0,0 +1,308 @@
+<?php
+/**
+ * OAuth 2.0 session entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+use League\OAuth2\Server\AbstractServer;
+use League\OAuth2\Server\Event\SessionOwnerEvent;
+
+/**
+ * Session entity grant
+ */
+class SessionEntity
+{
+    /**
+     * Session identifier
+     *
+     * @var string
+     */
+    protected $id;
+
+    /**
+     * Client identifier
+     *
+     * @var \League\OAuth2\Server\Entity\ClientEntity
+     */
+    protected $client;
+
+    /**
+     * Session owner identifier
+     *
+     * @var string
+     */
+    protected $ownerId;
+
+    /**
+     * Session owner type (e.g. "user")
+     *
+     * @var string
+     */
+    protected $ownerType;
+
+    /**
+     * Auth code
+     *
+     * @var \League\OAuth2\Server\Entity\AuthCodeEntity
+     */
+    protected $authCode;
+
+    /**
+     * Access token
+     *
+     * @var \League\OAuth2\Server\Entity\AccessTokenEntity
+     */
+    protected $accessToken;
+
+    /**
+     * Refresh token
+     *
+     * @var \League\OAuth2\Server\Entity\RefreshTokenEntity
+     */
+    protected $refreshToken;
+
+    /**
+     * Session scopes
+     *
+     * @var \Symfony\Component\HttpFoundation\ParameterBag
+     */
+    protected $scopes;
+
+    /**
+     * Authorization or resource server
+     *
+     * @var \League\OAuth2\Server\AuthorizationServer|\League\OAuth2\Server\ResourceServer
+     */
+    protected $server;
+
+    /**
+     * __construct
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     *
+     * @return self
+     */
+    public function __construct(AbstractServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * Set the session identifier
+     *
+     * @param string $id
+     *
+     * @return self
+     */
+    public function setId($id)
+    {
+        $this->id = $id;
+
+        return $this;
+    }
+
+    /**
+     * Return the session identifier
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * Associate a scope
+     *
+     * @param \League\OAuth2\Server\Entity\ScopeEntity $scope
+     *
+     * @return self
+     */
+    public function associateScope(ScopeEntity $scope)
+    {
+        if (!isset($this->scopes[$scope->getId()])) {
+            $this->scopes[$scope->getId()] = $scope;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Check if access token has an associated scope
+     *
+     * @param string $scope Scope to check
+     *
+     * @return bool
+     */
+    public function hasScope($scope)
+    {
+        if ($this->scopes === null) {
+            $this->getScopes();
+        }
+
+        return isset($this->scopes[$scope]);
+    }
+
+    /**
+     * Return all scopes associated with the session
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[]
+     */
+    public function getScopes()
+    {
+        if ($this->scopes === null) {
+            $this->scopes = $this->formatScopes($this->server->getSessionStorage()->getScopes($this));
+        }
+
+        return $this->scopes;
+    }
+
+    /**
+     * Format the local scopes array
+     *
+     * @param  \League\OAuth2\Server\Entity\Scope[]
+     *
+     * @return array
+     */
+    private function formatScopes($unformatted = [])
+    {
+        $scopes = [];
+        if (is_array($unformatted)) {
+            foreach ($unformatted as $scope) {
+                if ($scope instanceof ScopeEntity) {
+                    $scopes[$scope->getId()] = $scope;
+                }
+            }
+        }
+
+        return $scopes;
+    }
+
+    /**
+     * Associate an access token with the session
+     *
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity $accessToken
+     *
+     * @return self
+     */
+    public function associateAccessToken(AccessTokenEntity $accessToken)
+    {
+        $this->accessToken = $accessToken;
+
+        return $this;
+    }
+
+    /**
+     * Associate a refresh token with the session
+     *
+     * @param \League\OAuth2\Server\Entity\RefreshTokenEntity $refreshToken
+     *
+     * @return self
+     */
+    public function associateRefreshToken(RefreshTokenEntity $refreshToken)
+    {
+        $this->refreshToken = $refreshToken;
+
+        return $this;
+    }
+
+    /**
+     * Associate a client with the session
+     *
+     * @param \League\OAuth2\Server\Entity\ClientEntity $client The client
+     *
+     * @return self
+     */
+    public function associateClient(ClientEntity $client)
+    {
+        $this->client = $client;
+
+        return $this;
+    }
+
+    /**
+     * Return the session client
+     *
+     * @return \League\OAuth2\Server\Entity\ClientEntity
+     */
+    public function getClient()
+    {
+        if ($this->client instanceof ClientEntity) {
+            return $this->client;
+        }
+
+        $this->client = $this->server->getClientStorage()->getBySession($this);
+
+        return $this->client;
+    }
+
+    /**
+     * Set the session owner
+     *
+     * @param string $type The type of the owner (e.g. user, app)
+     * @param string $id   The identifier of the owner
+     *
+     * @return self
+     */
+    public function setOwner($type, $id)
+    {
+        $this->ownerType = $type;
+        $this->ownerId = $id;
+
+        $this->server->getEventEmitter()->emit(new SessionOwnerEvent($this));
+
+        return $this;
+    }
+
+    /**
+     * Return session owner identifier
+     *
+     * @return string
+     */
+    public function getOwnerId()
+    {
+        return $this->ownerId;
+    }
+
+    /**
+     * Return session owner type
+     *
+     * @return string
+     */
+    public function getOwnerType()
+    {
+        return $this->ownerType;
+    }
+
+    /**
+     * Save the session
+     *
+     * @return void
+     */
+    public function save()
+    {
+        // Save the session and get an identifier
+        $id = $this->server->getSessionStorage()->create(
+            $this->getOwnerType(),
+            $this->getOwnerId(),
+            $this->getClient()->getId(),
+            $this->getClient()->getRedirectUri()
+        );
+
+        $this->setId($id);
+
+        // Associate the scope with the session
+        foreach ($this->getScopes() as $scope) {
+            $this->server->getSessionStorage()->associateScope($this, $scope);
+        }
+    }
+}

src/Event/ClientAuthenticationFailedEvent.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * OAuth 2.0 client authentication failed event
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Event;
+
+use League\Event\AbstractEvent;
+use Symfony\Component\HttpFoundation\Request;
+
+class ClientAuthenticationFailedEvent extends AbstractEvent
+{
+    /**
+     * Request
+     *
+     * @var \Symfony\Component\HttpFoundation\Request
+     */
+    private $request;
+
+    /**
+     * Init the event with a request
+     *
+     * @param \Symfony\Component\HttpFoundation\Request $request
+     */
+    public function __construct(Request $request)
+    {
+        $this->request = $request;
+    }
+
+    /**
+     * The name of the event
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return 'error.auth.client';
+    }
+
+    /**
+     * Return request
+     *
+     * @return \Symfony\Component\HttpFoundation\Request
+     */
+    public function getRequest()
+    {
+        return $this->request;
+    }
+}

src/Event/SessionOwnerEvent.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * OAuth 2.0 session owner event
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Event;
+
+use League\Event\AbstractEvent;
+use League\OAuth2\Server\Entity\SessionEntity;
+
+class SessionOwnerEvent extends AbstractEvent
+{
+    /**
+     * Session entity
+     *
+     * @var \League\OAuth2\Server\Entity\SessionEntity
+     */
+    private $session;
+
+    /**
+     * Init the event with a session
+     *
+     * @param \League\OAuth2\Server\Entity\SessionEntity $session
+     */
+    public function __construct(SessionEntity $session)
+    {
+        $this->session = $session;
+    }
+
+    /**
+     * The name of the event
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return 'session.owner';
+    }
+
+    /**
+     * Return session
+     *
+     * @return \League\OAuth2\Server\Entity\SessionEntity
+     */
+    public function getSession()
+    {
+        return $this->session;
+    }
+}

src/Event/UserAuthenticationFailedEvent.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * OAuth 2.0 user authentication failed event
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Event;
+
+use League\Event\AbstractEvent;
+use Symfony\Component\HttpFoundation\Request;
+
+class UserAuthenticationFailedEvent extends AbstractEvent
+{
+    /**
+     * Request
+     *
+     * @var \Symfony\Component\HttpFoundation\Request
+     */
+    private $request;
+
+    /**
+     * Init the event with a request
+     *
+     * @param \Symfony\Component\HttpFoundation\Request $request
+     */
+    public function __construct(Request $request)
+    {
+        $this->request = $request;
+    }
+
+    /**
+     * The name of the event
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return 'error.auth.user';
+    }
+
+    /**
+     * Return request
+     *
+     * @return \Symfony\Component\HttpFoundation\Request
+     */
+    public function getRequest()
+    {
+        return $this->request;
+    }
+}

src/Exception/AccessDeniedException.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Access Denied Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class AccessDeniedException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 401;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'access_denied';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct()
+    {
+        parent::__construct('The resource owner or authorization server denied the request.');
+    }
+}

src/Exception/InvalidClientException.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Client Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class InvalidClientException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 401;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'invalid_client';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct()
+    {
+        parent::__construct('Client authentication failed.');
+    }
+}

src/Exception/InvalidCredentialsException.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Credentials Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class InvalidCredentialsException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 401;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'invalid_credentials';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct()
+    {
+        parent::__construct('The user credentials were incorrect.');
+    }
+}

src/Exception/InvalidGrantException.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Grant Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class InvalidGrantException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'invalid_grant';
+
+    /**
+     * {@inheritdoc}
+     */
+
+    public function __construct($parameter)
+    {
+        $this->parameter = $parameter;
+        parent::__construct(
+            sprintf(
+                'The provided authorization grant is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client. Check the "%s" parameter.',
+                $parameter
+            )
+        );
+    }
+}

src/Exception/InvalidRefreshException.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Refresh Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class InvalidRefreshException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'invalid_request';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct()
+    {
+        parent::__construct('The refresh token is invalid.');
+    }
+}

src/Exception/InvalidRequestException.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Request Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class InvalidRequestException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'invalid_request';
+
+    /**
+     * {@inheritdoc}
+     */
+
+    public function __construct($parameter, $redirectUri = null)
+    {
+        $this->parameter = $parameter;
+        parent::__construct(
+            sprintf(
+                'The request is missing a required parameter, includes an invalid parameter value, includes a parameter more than once, or is otherwise malformed. Check the "%s" parameter.',
+                $parameter
+            )
+        );
+
+        $this->redirectUri = $redirectUri;
+    }
+}

src/Exception/InvalidScopeException.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Scope Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class InvalidScopeException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'invalid_scope';
+
+    /**
+     * {@inheritdoc}
+     */
+
+    public function __construct($parameter, $redirectUri = null)
+    {
+        $this->parameter = $parameter;
+        parent::__construct(
+            sprintf(
+                'The requested scope is invalid, unknown, or malformed. Check the "%s" scope.',
+                $parameter
+            )
+        );
+
+        $this->redirectUri = $redirectUri;
+    }
+}

src/Exception/OAuthException.php

@@ -0,0 +1,145 @@
+<?php
+/**
+ * OAuth 2.0 Base Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+use League\OAuth2\Server\Util\RedirectUri;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Exception class
+ */
+class OAuthException extends \Exception
+{
+    /**
+     * The HTTP status code for this exception that should be sent in the response
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * Redirect URI if the server should redirect back to the client
+     *
+     * @var string|null
+     */
+    public $redirectUri = null;
+
+    /**
+     * The exception type
+     */
+    public $errorType = '';
+
+    /**
+     * Parameter eventually passed to Exception
+     */
+    public $parameter = '';
+
+    /**
+     * Throw a new exception
+     *
+     * @param string $msg Exception Message
+     */
+    public function __construct($msg = 'An error occured')
+    {
+        parent::__construct($msg);
+    }
+
+    /**
+     * Should the server redirect back to the client?
+     *
+     * @return bool
+     */
+    public function shouldRedirect()
+    {
+        return is_null($this->redirectUri) ? false : true;
+    }
+
+    /**
+     * Return redirect URI if set
+     *
+     * @return string|null
+     */
+    public function getRedirectUri()
+    {
+        return RedirectUri::make(
+            $this->redirectUri,
+            [
+                'error' =>  $this->errorType,
+                'message' =>  $this->getMessage(),
+            ]
+        );
+    }
+
+    /**
+     * Return parameter if set
+     *
+     * @return string
+     */
+    public function getParameter()
+    {
+        return $this->parameter;
+    }
+
+    /**
+     * Get all headers that have to be send with the error response
+     *
+     * @return array Array with header values
+     */
+    public function getHttpHeaders()
+    {
+        $headers = [];
+        switch ($this->httpStatusCode) {
+            case 401:
+                $headers[] = 'HTTP/1.1 401 Unauthorized';
+                break;
+            case 500:
+                $headers[] = 'HTTP/1.1 500 Internal Server Error';
+                break;
+            case 501:
+                $headers[] = 'HTTP/1.1 501 Not Implemented';
+                break;
+            case 400:
+            default:
+                $headers[] = 'HTTP/1.1 400 Bad Request';
+                break;
+        }
+
+        // Add "WWW-Authenticate" header
+        //
+        // RFC 6749, section 5.2.:
+        // "If the client attempted to authenticate via the 'Authorization'
+        // request header field, the authorization server MUST
+        // respond with an HTTP 401 (Unauthorized) status code and
+        // include the "WWW-Authenticate" response header field
+        // matching the authentication scheme used by the client.
+        // @codeCoverageIgnoreStart
+        if ($this->errorType === 'invalid_client') {
+            $authScheme = null;
+            $request = new Request();
+            if ($request->getUser() !== null) {
+                $authScheme = 'Basic';
+            } else {
+                $authHeader = $request->headers->get('Authorization');
+                if ($authHeader !== null) {
+                    if (strpos($authHeader, 'Bearer') === 0) {
+                        $authScheme = 'Bearer';
+                    } elseif (strpos($authHeader, 'Basic') === 0) {
+                        $authScheme = 'Basic';
+                    }
+                }
+            }
+            if ($authScheme !== null) {
+                $headers[] = 'WWW-Authenticate: '.$authScheme.' realm=""';
+            }
+        }
+        // @codeCoverageIgnoreEnd
+        return $headers;
+    }
+}

src/Exception/ServerErrorException.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * OAuth 2.0 Server Error Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class ServerErrorException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 500;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'server_error';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct($parameter = null)
+    {
+        $this->parameter = $parameter;
+        $parameter = is_null($parameter) ? 'The authorization server encountered an unexpected condition which prevented it from fulfilling the request.' : $parameter;
+        parent::__construct($parameter);
+
+    }
+}

src/Exception/UnauthorizedClientException.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Unauthorized Client Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class UnauthorizedClientException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'unauthorized_client';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct()
+    {
+        parent::__construct('The client is not authorized to request an access token using this method.');
+    }
+}

src/Exception/UnsupportedGrantTypeException.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * OAuth 2.0 Invalid Request Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class UnsupportedGrantTypeException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'unsupported_grant_type';
+
+    /**
+     * {@inheritdoc}
+     */
+
+    public function __construct($parameter)
+    {
+        $this->parameter = $parameter;
+        parent::__construct(
+            sprintf(
+                'The authorization grant type "%s" is not supported by the authorization server.',
+                $parameter
+            )
+        );
+    }
+}

src/Exception/UnsupportedResponseTypeException.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * OAuth 2.0 Unsupported Response Type Exception
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Exception;
+
+/**
+ * Exception class
+ */
+class UnsupportedResponseTypeException extends OAuthException
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $httpStatusCode = 400;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'unsupported_response_type';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct($parameter, $redirectUri = null)
+    {
+        $this->parameter = $parameter;
+        parent::__construct('The authorization server does not support obtaining an access token using this method.');
+        $this->redirectUri = $redirectUri;
+    }
+}

src/Grant/AbstractGrant.php

@@ -0,0 +1,197 @@
+<?php
+/**
+ * OAuth 2.0 Abstract grant
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Grant;
+
+use League\OAuth2\Server\AuthorizationServer;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Exception;
+
+/**
+ * Abstract grant class
+ */
+abstract class AbstractGrant implements GrantTypeInterface
+{
+    /**
+     * Grant identifier
+     *
+     * @var string
+     */
+    protected $identifier = '';
+
+    /**
+     * Response type
+     *
+     * @var string
+     */
+    protected $responseType;
+
+    /**
+     * Callback to authenticate a user's name and password
+     *
+     * @var callable
+     */
+    protected $callback;
+
+    /**
+     * AuthServer instance
+     *
+     * @var \League\OAuth2\Server\AuthorizationServer
+     */
+    protected $server;
+
+    /**
+     * Access token expires in override
+     *
+     * @var int
+     */
+    protected $accessTokenTTL;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getIdentifier()
+    {
+        return $this->identifier;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setIdentifier($identifier)
+    {
+        $this->identifier = $identifier;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getResponseType()
+    {
+        return $this->responseType;
+    }
+
+    /**
+     * Get the TTL for an access token
+     *
+     * @return int The TTL
+     */
+    public function getAccessTokenTTL()
+    {
+        if ($this->accessTokenTTL) {
+            return $this->accessTokenTTL;
+        }
+
+        return $this->server->getAccessTokenTTL();
+    }
+
+    /**
+     * Override the default access token expire time
+     *
+     * @param int $accessTokenTTL
+     *
+     * @return self
+     */
+    public function setAccessTokenTTL($accessTokenTTL)
+    {
+        $this->accessTokenTTL = $accessTokenTTL;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setAuthorizationServer(AuthorizationServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * Given a list of scopes, validate them and return an array of Scope entities
+     *
+     * @param string                                    $scopeParam  A string of scopes (e.g. "profile email birthday")
+     * @param \League\OAuth2\Server\Entity\ClientEntity $client      Client entity
+     * @param string|null                               $redirectUri The redirect URI to return the user to
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[]
+     *
+     * @throws \League\OAuth2\Server\Exception\InvalidScopeException If scope is invalid, or no scopes passed when required
+     * @throws
+     */
+    public function validateScopes($scopeParam = '', ClientEntity $client, $redirectUri = null)
+    {
+        $scopesList = explode($this->server->getScopeDelimiter(), $scopeParam);
+
+        for ($i = 0; $i < count($scopesList); $i++) {
+            $scopesList[$i] = trim($scopesList[$i]);
+            if ($scopesList[$i] === '') {
+                unset($scopesList[$i]); // Remove any junk scopes
+            }
+        }
+
+        if (
+            $this->server->scopeParamRequired() === true
+            && $this->server->getDefaultScope() === null
+            && count($scopesList) === 0
+        ) {
+            throw new Exception\InvalidRequestException('scope');
+        } elseif (count($scopesList) === 0 && $this->server->getDefaultScope() !== null) {
+            if (is_array($this->server->getDefaultScope())) {
+                $scopesList = $this->server->getDefaultScope();
+            } else {
+                $scopesList = [0 => $this->server->getDefaultScope()];
+            }
+        }
+
+        $scopes = [];
+
+        foreach ($scopesList as $scopeItem) {
+            $scope = $this->server->getScopeStorage()->get(
+                $scopeItem,
+                $this->getIdentifier(),
+                $client->getId()
+            );
+
+            if (($scope instanceof ScopeEntity) === false) {
+                throw new Exception\InvalidScopeException($scopeItem, $redirectUri);
+            }
+
+            $scopes[$scope->getId()] = $scope;
+        }
+
+        return $scopes;
+    }
+
+    /**
+     * Format the local scopes array
+     *
+     * @param  \League\OAuth2\Server\Entity\ScopeEntity[]
+     *
+     * @return array
+     */
+    protected function formatScopes($unformated = [])
+    {
+        $scopes = [];
+        foreach ($unformated as $scope) {
+            if ($scope instanceof ScopeEntity) {
+                $scopes[$scope->getId()] = $scope;
+            }
+        }
+
+        return $scopes;
+    }
+}

src/Grant/AuthCodeGrant.php

@@ -0,0 +1,303 @@
+<?php
+/**
+ * OAuth 2.0 Auth code grant
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Grant;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\AuthCodeEntity;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\RefreshTokenEntity;
+use League\OAuth2\Server\Entity\SessionEntity;
+use League\OAuth2\Server\Event;
+use League\OAuth2\Server\Exception;
+use League\OAuth2\Server\Util\SecureKey;
+
+/**
+ * Auth code grant class
+ */
+class AuthCodeGrant extends AbstractGrant
+{
+    /**
+     * Grant identifier
+     *
+     * @var string
+     */
+    protected $identifier = 'authorization_code';
+
+    /**
+     * Response type
+     *
+     * @var string
+     */
+    protected $responseType = 'code';
+
+    /**
+     * AuthServer instance
+     *
+     * @var \League\OAuth2\Server\AuthorizationServer
+     */
+    protected $server = null;
+
+    /**
+     * Access token expires in override
+     *
+     * @var int
+     */
+    protected $accessTokenTTL = null;
+
+    /**
+     * The TTL of the auth token
+     *
+     * @var integer
+     */
+    protected $authTokenTTL = 600;
+
+    /**
+     * Whether to require the client secret when
+     * completing the flow.
+     *
+     * @var boolean
+     */
+    protected $requireClientSecret = true;
+
+    /**
+     * Override the default access token expire time
+     *
+     * @param int $authTokenTTL
+     *
+     * @return void
+     */
+    public function setAuthTokenTTL($authTokenTTL)
+    {
+        $this->authTokenTTL = $authTokenTTL;
+    }
+
+    /**
+     *
+     * @param bool $required True to require client secret during access
+     *                       token request. False if not. Default = true
+     */
+    public function setRequireClientSecret($required)
+    {
+        $this->requireClientSecret = $required;
+    }
+
+    /**
+     * True if client secret is required during
+     * access token request. False if it isn't.
+     *
+     * @return bool
+     */
+    public function shouldRequireClientSecret()
+    {
+        return $this->requireClientSecret;
+    }
+
+    /**
+     * Check authorize parameters
+     *
+     * @return array Authorize request parameters
+     *
+     * @throws
+     */
+    public function checkAuthorizeParams()
+    {
+        // Get required params
+        $clientId = $this->server->getRequest()->query->get('client_id', null);
+        if (is_null($clientId)) {
+            throw new Exception\InvalidRequestException('client_id');
+        }
+
+        $redirectUri = $this->server->getRequest()->query->get('redirect_uri', null);
+        if (is_null($redirectUri)) {
+            throw new Exception\InvalidRequestException('redirect_uri');
+        }
+
+        // Validate client ID and redirect URI
+        $client = $this->server->getClientStorage()->get(
+            $clientId,
+            null,
+            $redirectUri,
+            $this->getIdentifier()
+        );
+
+        if (($client instanceof ClientEntity) === false) {
+            $this->server->getEventEmitter()->emit(new Event\ClientAuthenticationFailedEvent($this->server->getRequest()));
+            throw new Exception\InvalidClientException();
+        }
+
+        $state = $this->server->getRequest()->query->get('state', null);
+        if ($this->server->stateParamRequired() === true && is_null($state)) {
+            throw new Exception\InvalidRequestException('state', $redirectUri);
+        }
+
+        $responseType = $this->server->getRequest()->query->get('response_type', null);
+        if (is_null($responseType)) {
+            throw new Exception\InvalidRequestException('response_type', $redirectUri);
+        }
+
+        // Ensure response type is one that is recognised
+        if (!in_array($responseType, $this->server->getResponseTypes())) {
+            throw new Exception\UnsupportedResponseTypeException($responseType, $redirectUri);
+        }
+
+        // Validate any scopes that are in the request
+        $scopeParam = $this->server->getRequest()->query->get('scope', '');
+        $scopes = $this->validateScopes($scopeParam, $client, $redirectUri);
+
+        return [
+            'client'        => $client,
+            'redirect_uri'  => $redirectUri,
+            'state'         => $state,
+            'response_type' => $responseType,
+            'scopes'        => $scopes
+        ];
+    }
+
+    /**
+     * Parse a new authorize request
+     *
+     * @param string $type       The session owner's type
+     * @param string $typeId     The session owner's ID
+     * @param array  $authParams The authorize request $_GET parameters
+     *
+     * @return string An authorisation code
+     */
+    public function newAuthorizeRequest($type, $typeId, $authParams = [])
+    {
+        // Create a new session
+        $session = new SessionEntity($this->server);
+        $session->setOwner($type, $typeId);
+        $session->associateClient($authParams['client']);
+
+        // Create a new auth code
+        $authCode = new AuthCodeEntity($this->server);
+        $authCode->setId(SecureKey::generate());
+        $authCode->setRedirectUri($authParams['redirect_uri']);
+        $authCode->setExpireTime(time() + $this->authTokenTTL);
+
+        foreach ($authParams['scopes'] as $scope) {
+            $authCode->associateScope($scope);
+            $session->associateScope($scope);
+        }
+
+        $session->save();
+        $authCode->setSession($session);
+        $authCode->save();
+
+        return $authCode->generateRedirectUri($authParams['state']);
+    }
+
+    /**
+     * Complete the auth code grant
+     *
+     * @return array
+     *
+     * @throws
+     */
+    public function completeFlow()
+    {
+        // Get the required params
+        $clientId = $this->server->getRequest()->request->get('client_id', $this->server->getRequest()->getUser());
+        if (is_null($clientId)) {
+            throw new Exception\InvalidRequestException('client_id');
+        }
+
+        $clientSecret = $this->server->getRequest()->request->get('client_secret',
+            $this->server->getRequest()->getPassword());
+        if ($this->shouldRequireClientSecret() && is_null($clientSecret)) {
+            throw new Exception\InvalidRequestException('client_secret');
+        }
+
+        $redirectUri = $this->server->getRequest()->request->get('redirect_uri', null);
+        if (is_null($redirectUri)) {
+            throw new Exception\InvalidRequestException('redirect_uri');
+        }
+
+        // Validate client ID and client secret
+        $client = $this->server->getClientStorage()->get(
+            $clientId,
+            $clientSecret,
+            $redirectUri,
+            $this->getIdentifier()
+        );
+
+        if (($client instanceof ClientEntity) === false) {
+            $this->server->getEventEmitter()->emit(new Event\ClientAuthenticationFailedEvent($this->server->getRequest()));
+            throw new Exception\InvalidClientException();
+        }
+
+        // Validate the auth code
+        $authCode = $this->server->getRequest()->request->get('code', null);
+        if (is_null($authCode)) {
+            throw new Exception\InvalidRequestException('code');
+        }
+
+        $code = $this->server->getAuthCodeStorage()->get($authCode);
+        if (($code instanceof AuthCodeEntity) === false) {
+            throw new Exception\InvalidRequestException('code');
+        }
+
+        // Ensure the auth code hasn't expired
+        if ($code->isExpired() === true) {
+            throw new Exception\InvalidRequestException('code');
+        }
+
+        // Check redirect URI presented matches redirect URI originally used in authorize request
+        if ($code->getRedirectUri() !== $redirectUri) {
+            throw new Exception\InvalidRequestException('redirect_uri');
+        }
+
+        $session = $code->getSession();
+        $session->associateClient($client);
+
+        $authCodeScopes = $code->getScopes();
+
+        // Generate the access token
+        $accessToken = new AccessTokenEntity($this->server);
+        $accessToken->setId(SecureKey::generate());
+        $accessToken->setExpireTime($this->getAccessTokenTTL() + time());
+
+        foreach ($authCodeScopes as $authCodeScope) {
+            $session->associateScope($authCodeScope);
+        }
+
+        foreach ($session->getScopes() as $scope) {
+            $accessToken->associateScope($scope);
+        }
+
+        $this->server->getTokenType()->setSession($session);
+        $this->server->getTokenType()->setParam('access_token', $accessToken->getId());
+        $this->server->getTokenType()->setParam('expires_in', $this->getAccessTokenTTL());
+
+        // Associate a refresh token if set
+        if ($this->server->hasGrantType('refresh_token')) {
+            $refreshToken = new RefreshTokenEntity($this->server);
+            $refreshToken->setId(SecureKey::generate());
+            $refreshToken->setExpireTime($this->server->getGrantType('refresh_token')->getRefreshTokenTTL() + time());
+            $this->server->getTokenType()->setParam('refresh_token', $refreshToken->getId());
+        }
+
+        // Expire the auth code
+        $code->expire();
+
+        // Save all the things
+        $accessToken->setSession($session);
+        $accessToken->save();
+
+        if (isset($refreshToken) && $this->server->hasGrantType('refresh_token')) {
+            $refreshToken->setAccessToken($accessToken);
+            $refreshToken->save();
+        }
+
+        return $this->server->getTokenType()->generateResponse();
+    }
+}

src/Grant/ClientCredentialsGrant.php

@@ -0,0 +1,122 @@
+<?php
+/**
+ * OAuth 2.0 Client credentials grant
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Grant;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\SessionEntity;
+use League\OAuth2\Server\Event;
+use League\OAuth2\Server\Exception;
+use League\OAuth2\Server\Util\SecureKey;
+
+/**
+ * Client credentials grant class
+ */
+class ClientCredentialsGrant extends AbstractGrant
+{
+    /**
+     * Grant identifier
+     *
+     * @var string
+     */
+    protected $identifier = 'client_credentials';
+
+    /**
+     * Response type
+     *
+     * @var string
+     */
+    protected $responseType = null;
+
+    /**
+     * AuthServer instance
+     *
+     * @var \League\OAuth2\Server\AuthorizationServer
+     */
+    protected $server = null;
+
+    /**
+     * Access token expires in override
+     *
+     * @var int
+     */
+    protected $accessTokenTTL = null;
+
+    /**
+     * Complete the client credentials grant
+     *
+     * @return array
+     *
+     * @throws
+     */
+    public function completeFlow()
+    {
+        // Get the required params
+        $clientId = $this->server->getRequest()->request->get('client_id', $this->server->getRequest()->getUser());
+        if (is_null($clientId)) {
+            throw new Exception\InvalidRequestException('client_id');
+        }
+
+        $clientSecret = $this->server->getRequest()->request->get('client_secret',
+            $this->server->getRequest()->getPassword());
+        if (is_null($clientSecret)) {
+            throw new Exception\InvalidRequestException('client_secret');
+        }
+
+        // Validate client ID and client secret
+        $client = $this->server->getClientStorage()->get(
+            $clientId,
+            $clientSecret,
+            null,
+            $this->getIdentifier()
+        );
+
+        if (($client instanceof ClientEntity) === false) {
+            $this->server->getEventEmitter()->emit(new Event\ClientAuthenticationFailedEvent($this->server->getRequest()));
+            throw new Exception\InvalidClientException();
+        }
+
+        // Validate any scopes that are in the request
+        $scopeParam = $this->server->getRequest()->request->get('scope', '');
+        $scopes = $this->validateScopes($scopeParam, $client);
+
+        // Create a new session
+        $session = new SessionEntity($this->server);
+        $session->setOwner('client', $client->getId());
+        $session->associateClient($client);
+
+        // Generate an access token
+        $accessToken = new AccessTokenEntity($this->server);
+        $accessToken->setId(SecureKey::generate());
+        $accessToken->setExpireTime($this->getAccessTokenTTL() + time());
+
+        // Associate scopes with the session and access token
+        foreach ($scopes as $scope) {
+            $session->associateScope($scope);
+        }
+
+        foreach ($session->getScopes() as $scope) {
+            $accessToken->associateScope($scope);
+        }
+
+        // Save everything
+        $session->save();
+        $accessToken->setSession($session);
+        $accessToken->save();
+
+        $this->server->getTokenType()->setSession($session);
+        $this->server->getTokenType()->setParam('access_token', $accessToken->getId());
+        $this->server->getTokenType()->setParam('expires_in', $this->getAccessTokenTTL());
+
+        return $this->server->getTokenType()->generateResponse();
+    }
+}

src/Grant/GrantTypeInterface.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * OAuth 2.0 Grant type interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Grant;
+
+use League\OAuth2\Server\AuthorizationServer;
+
+/**
+ * Grant type interface
+ */
+interface GrantTypeInterface
+{
+    /**
+     * Return the identifier
+     *
+     * @return string
+     */
+    public function getIdentifier();
+
+    /**
+     * Return the identifier
+     *
+     * @param string $identifier
+     *
+     * @return self
+     */
+    public function setIdentifier($identifier);
+
+    /**
+     * Return the response type
+     *
+     * @return string
+     */
+    public function getResponseType();
+
+    /**
+     * Inject the authorization server into the grant
+     *
+     * @param \League\OAuth2\Server\AuthorizationServer $server The authorization server instance
+     *
+     * @return self
+     */
+    public function setAuthorizationServer(AuthorizationServer $server);
+
+    /**
+     * Complete the grant flow
+     *
+     * @return array
+     */
+    public function completeFlow();
+}

src/Grant/PasswordGrant.php

@@ -0,0 +1,182 @@
+<?php
+/**
+ * OAuth 2.0 Password grant
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Grant;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\RefreshTokenEntity;
+use League\OAuth2\Server\Entity\SessionEntity;
+use League\OAuth2\Server\Event;
+use League\OAuth2\Server\Exception;
+use League\OAuth2\Server\Util\SecureKey;
+
+/**
+ * Password grant class
+ */
+class PasswordGrant extends AbstractGrant
+{
+    /**
+     * Grant identifier
+     *
+     * @var string
+     */
+    protected $identifier = 'password';
+
+    /**
+     * Response type
+     *
+     * @var string
+     */
+    protected $responseType;
+
+    /**
+     * Callback to authenticate a user's name and password
+     *
+     * @var callable
+     */
+    protected $callback;
+
+    /**
+     * Access token expires in override
+     *
+     * @var int
+     */
+    protected $accessTokenTTL;
+
+    /**
+     * Set the callback to verify a user's username and password
+     *
+     * @param callable $callback The callback function
+     *
+     * @return void
+     */
+    public function setVerifyCredentialsCallback(callable $callback)
+    {
+        $this->callback = $callback;
+    }
+
+    /**
+     * Return the callback function
+     *
+     * @return callable
+     *
+     * @throws
+     */
+    protected function getVerifyCredentialsCallback()
+    {
+        if (is_null($this->callback) || !is_callable($this->callback)) {
+            throw new Exception\ServerErrorException('Null or non-callable callback set on Password grant');
+        }
+
+        return $this->callback;
+    }
+
+    /**
+     * Complete the password grant
+     *
+     * @return array
+     *
+     * @throws
+     */
+    public function completeFlow()
+    {
+        // Get the required params
+        $clientId = $this->server->getRequest()->request->get('client_id', $this->server->getRequest()->getUser());
+        if (is_null($clientId)) {
+            throw new Exception\InvalidRequestException('client_id');
+        }
+
+        $clientSecret = $this->server->getRequest()->request->get('client_secret',
+            $this->server->getRequest()->getPassword());
+        if (is_null($clientSecret)) {
+            throw new Exception\InvalidRequestException('client_secret');
+        }
+
+        // Validate client ID and client secret
+        $client = $this->server->getClientStorage()->get(
+            $clientId,
+            $clientSecret,
+            null,
+            $this->getIdentifier()
+        );
+
+        if (($client instanceof ClientEntity) === false) {
+            $this->server->getEventEmitter()->emit(new Event\ClientAuthenticationFailedEvent($this->server->getRequest()));
+            throw new Exception\InvalidClientException();
+        }
+
+        $username = $this->server->getRequest()->request->get('username', null);
+        if (is_null($username)) {
+            throw new Exception\InvalidRequestException('username');
+        }
+
+        $password = $this->server->getRequest()->request->get('password', null);
+        if (is_null($password)) {
+            throw new Exception\InvalidRequestException('password');
+        }
+
+        // Check if user's username and password are correct
+        $userId = call_user_func($this->getVerifyCredentialsCallback(), $username, $password);
+
+        if ($userId === false) {
+            $this->server->getEventEmitter()->emit(new Event\UserAuthenticationFailedEvent($this->server->getRequest()));
+            throw new Exception\InvalidCredentialsException();
+        }
+
+        // Validate any scopes that are in the request
+        $scopeParam = $this->server->getRequest()->request->get('scope', '');
+        $scopes = $this->validateScopes($scopeParam, $client);
+
+        // Create a new session
+        $session = new SessionEntity($this->server);
+        $session->setOwner('user', $userId);
+        $session->associateClient($client);
+
+        // Generate an access token
+        $accessToken = new AccessTokenEntity($this->server);
+        $accessToken->setId(SecureKey::generate());
+        $accessToken->setExpireTime($this->getAccessTokenTTL() + time());
+
+        // Associate scopes with the session and access token
+        foreach ($scopes as $scope) {
+            $session->associateScope($scope);
+        }
+
+        foreach ($session->getScopes() as $scope) {
+            $accessToken->associateScope($scope);
+        }
+
+        $this->server->getTokenType()->setSession($session);
+        $this->server->getTokenType()->setParam('access_token', $accessToken->getId());
+        $this->server->getTokenType()->setParam('expires_in', $this->getAccessTokenTTL());
+
+        // Associate a refresh token if set
+        if ($this->server->hasGrantType('refresh_token')) {
+            $refreshToken = new RefreshTokenEntity($this->server);
+            $refreshToken->setId(SecureKey::generate());
+            $refreshToken->setExpireTime($this->server->getGrantType('refresh_token')->getRefreshTokenTTL() + time());
+            $this->server->getTokenType()->setParam('refresh_token', $refreshToken->getId());
+        }
+
+        // Save everything
+        $session->save();
+        $accessToken->setSession($session);
+        $accessToken->save();
+
+        if ($this->server->hasGrantType('refresh_token')) {
+            $refreshToken->setAccessToken($accessToken);
+            $refreshToken->save();
+        }
+
+        return $this->server->getTokenType()->generateResponse();
+    }
+}

src/Grant/RefreshTokenGrant.php

@@ -0,0 +1,223 @@
+<?php
+/**
+ * OAuth 2.0 Refresh token grant
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Grant;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\RefreshTokenEntity;
+use League\OAuth2\Server\Event;
+use League\OAuth2\Server\Exception;
+use League\OAuth2\Server\Util\SecureKey;
+
+/**
+ * Refresh token grant
+ */
+class RefreshTokenGrant extends AbstractGrant
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected $identifier = 'refresh_token';
+
+    /**
+     * Refresh token TTL (default = 604800 | 1 week)
+     *
+     * @var integer
+     */
+    protected $refreshTokenTTL = 604800;
+
+    /**
+     * Rotate token (default = true)
+     *
+     * @var integer
+     */
+    protected $refreshTokenRotate = true;
+
+    /**
+     * Whether to require the client secret when
+     * completing the flow.
+     *
+     * @var boolean
+     */
+    protected $requireClientSecret = true;
+
+    /**
+     * Set the TTL of the refresh token
+     *
+     * @param int $refreshTokenTTL
+     *
+     * @return void
+     */
+    public function setRefreshTokenTTL($refreshTokenTTL)
+    {
+        $this->refreshTokenTTL = $refreshTokenTTL;
+    }
+
+    /**
+     * Get the TTL of the refresh token
+     *
+     * @return int
+     */
+    public function getRefreshTokenTTL()
+    {
+        return $this->refreshTokenTTL;
+    }
+
+    /**
+     * Set the rotation boolean of the refresh token
+     * @param bool $refreshTokenRotate
+     */
+    public function setRefreshTokenRotation($refreshTokenRotate = true)
+    {
+        $this->refreshTokenRotate = $refreshTokenRotate;
+    }
+
+    /**
+     * Get rotation boolean of the refresh token
+     *
+     * @return bool
+     */
+    public function shouldRotateRefreshTokens()
+    {
+        return $this->refreshTokenRotate;
+    }
+
+    /**
+     *
+     * @param bool $required True to require client secret during access
+     *                       token request. False if not. Default = true
+     */
+    public function setRequireClientSecret($required)
+    {
+        $this->requireClientSecret = $required;
+    }
+
+    /**
+     * True if client secret is required during
+     * access token request. False if it isn't.
+     *
+     * @return bool
+     */
+    public function shouldRequireClientSecret()
+    {
+        return $this->requireClientSecret;
+    }
+
+
+    /**
+     * {@inheritdoc}
+     */
+    public function completeFlow()
+    {
+        $clientId = $this->server->getRequest()->request->get('client_id', $this->server->getRequest()->getUser());
+        if (is_null($clientId)) {
+            throw new Exception\InvalidRequestException('client_id');
+        }
+
+        $clientSecret = $this->server->getRequest()->request->get('client_secret',
+            $this->server->getRequest()->getPassword());
+        if ($this->shouldRequireClientSecret() && is_null($clientSecret)) {
+            throw new Exception\InvalidRequestException('client_secret');
+        }
+
+        // Validate client ID and client secret
+        $client = $this->server->getClientStorage()->get(
+            $clientId,
+            $clientSecret,
+            null,
+            $this->getIdentifier()
+        );
+
+        if (($client instanceof ClientEntity) === false) {
+            $this->server->getEventEmitter()->emit(new Event\ClientAuthenticationFailedEvent($this->server->getRequest()));
+            throw new Exception\InvalidClientException();
+        }
+
+        $oldRefreshTokenParam = $this->server->getRequest()->request->get('refresh_token', null);
+        if ($oldRefreshTokenParam === null) {
+            throw new Exception\InvalidRequestException('refresh_token');
+        }
+
+        // Validate refresh token
+        $oldRefreshToken = $this->server->getRefreshTokenStorage()->get($oldRefreshTokenParam);
+
+        if (($oldRefreshToken instanceof RefreshTokenEntity) === false) {
+            throw new Exception\InvalidRefreshException();
+        }
+
+        // Ensure the old refresh token hasn't expired
+        if ($oldRefreshToken->isExpired() === true) {
+            throw new Exception\InvalidRefreshException();
+        }
+
+        $oldAccessToken = $oldRefreshToken->getAccessToken();
+
+        // Get the scopes for the original session
+        $session = $oldAccessToken->getSession();
+        $scopes = $this->formatScopes($session->getScopes());
+
+        // Get and validate any requested scopes
+        $requestedScopesString = $this->server->getRequest()->request->get('scope', '');
+        $requestedScopes = $this->validateScopes($requestedScopesString, $client);
+
+        // If no new scopes are requested then give the access token the original session scopes
+        if (count($requestedScopes) === 0) {
+            $newScopes = $scopes;
+        } else {
+            // The OAuth spec says that a refreshed access token can have the original scopes or fewer so ensure
+            //  the request doesn't include any new scopes
+            foreach ($requestedScopes as $requestedScope) {
+                if (!isset($scopes[$requestedScope->getId()])) {
+                    throw new Exception\InvalidScopeException($requestedScope->getId());
+                }
+            }
+
+            $newScopes = $requestedScopes;
+        }
+
+        // Generate a new access token and assign it the correct sessions
+        $newAccessToken = new AccessTokenEntity($this->server);
+        $newAccessToken->setId(SecureKey::generate());
+        $newAccessToken->setExpireTime($this->getAccessTokenTTL() + time());
+        $newAccessToken->setSession($session);
+
+        foreach ($newScopes as $newScope) {
+            $newAccessToken->associateScope($newScope);
+        }
+
+        // Expire the old token and save the new one
+        $oldAccessToken->expire();
+        $newAccessToken->save();
+
+        $this->server->getTokenType()->setSession($session);
+        $this->server->getTokenType()->setParam('access_token', $newAccessToken->getId());
+        $this->server->getTokenType()->setParam('expires_in', $this->getAccessTokenTTL());
+
+        if ($this->shouldRotateRefreshTokens()) {
+            // Expire the old refresh token
+            $oldRefreshToken->expire();
+
+            // Generate a new refresh token
+            $newRefreshToken = new RefreshTokenEntity($this->server);
+            $newRefreshToken->setId(SecureKey::generate());
+            $newRefreshToken->setExpireTime($this->getRefreshTokenTTL() + time());
+            $newRefreshToken->setAccessToken($newAccessToken);
+            $newRefreshToken->save();
+
+            $this->server->getTokenType()->setParam('refresh_token', $newRefreshToken->getId());
+        } else {
+            $this->server->getTokenType()->setParam('refresh_token', $oldRefreshToken->getId());
+        }
+
+        return $this->server->getTokenType()->generateResponse();
+    }
+}

src/Oauth2/Authentication/Database.php

@@ -1,332 +0,0 @@
-<?php
-
-namespace Oauth2\Authentication;
-
-interface Database
-{
-    /**
-     * Validate a client
-     *
-     * Database query:
-     *
-     * <code>
-     * # Client ID + redirect URI
-     * SELECT clients.id FROM clients LEFT JOIN client_endpoints ON
-     *  client_endpoints.client_id = clients.id WHERE clients.id = $clientId AND
-     *  client_endpoints.redirect_uri = $redirectUri
-     *
-     * # Client ID + client secret
-     * SELECT clients.id FROM clients  WHERE clients.id = $clientId AND
-     *  clients.secret = $clientSecret
-     *
-     * # Client ID + client secret + redirect URI
-     * SELECT clients.id FROM clients LEFT JOIN client_endpoints ON
-     *  client_endpoints.client_id = clients.id WHERE clients.id = $clientId AND
-     *  clients.secret = $clientSecret AND client_endpoints.redirect_uri =
-     *  $redirectUri
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *     [client_id] => (string) The client ID
-     *     [client secret] => (string) The client secret
-     *     [redirect_uri] => (string) The redirect URI used in this request
-     *     [name] => (string) The name of the client
-     * )
-     * </code>
-     *
-     * @param  string $clientId       The client's ID
-     * @param  string $clientSecret The client's secret (default = "null")
-     * @param  string $redirectUri   The client's redirect URI (default = "null")
-     * @return  bool|array               Returns false if the validation fails, array on success
-     */
-    public function validateClient(
-        $clientId,
-        $clientSecret = null,
-        $redirectUri = null
-    );
-
-    /**
-     * Create a new OAuth session
-     *
-     * Database query:
-     *
-     * <code>
-     * INSERT INTO oauth_sessions (client_id, redirect_uri, owner_type,
-     *  owner_id, auth_code, access_token, stage, first_requested, last_updated)
-     *  VALUES ($clientId, $redirectUri, $type, $typeId, $authCode,
-     *  $accessToken, $stage, UNIX_TIMESTAMP(NOW()), UNIX_TIMESTAMP(NOW()))
-     * </code>
-     *
-     * @param  string $clientId    The client ID
-     * @param  string $redirectUri The redirect URI
-     * @param  string $type        The session owner's type (default = "user")
-     * @param  string $typeId      The session owner's ID (default = "null")
-     * @param  string $authCode    The authorisation code (default = "null")
-     * @param  string $accessToken The access token (default = "null")
-     * @param  string $stage       The stage of the session (default ="request")
-     * @return  int The session ID
-     */
-    public function newSession(
-        $clientId,
-        $redirectUri,
-        $type = 'user',
-        $typeId = null,
-        $authCode = null,
-        $accessToken = null,
-        $accessTokenExpire = null,
-        $stage = 'requested'
-    );
-
-    /**
-     * Update an OAuth session
-     *
-     * Database query:
-     *
-     * <code>
-     * UPDATE oauth_sessions SET auth_code = $authCode, access_token =
-     *  $accessToken, stage = $stage, last_updated = UNIX_TIMESTAMP(NOW()) WHERE
-     *  id = $sessionId
-     * </code>
-     *
-     * @param  string $sessionId   The session ID
-     * @param  string $authCode    The authorisation code (default = "null")
-     * @param  string $accessToken The access token (default = "null")
-     * @param  string $stage       The stage of the session (default ="request")
-     * @return  void
-     */
-    public function updateSession(
-        $sessionId,
-        $authCode = null,
-        $accessToken = null,
-        $accessTokenExpire = null,
-        $stage = 'requested'
-    );
-
-    /**
-     * Delete an OAuth session
-     *
-     * <code>
-     * DELETE FROM oauth_sessions WHERE client_id = $clientId AND owner_type =
-     *  $type AND owner_id = $typeId
-     * </code>
-     *
-     * @param  string $clientId The client ID
-     * @param  string $type     The session owner's type
-     * @param  string $typeId   The session owner's ID
-     * @return  void
-     */
-    public function deleteSession(
-        $clientId,
-        $type,
-        $typeId
-    );
-
-    /**
-     * Validate that an authorisation code is valid
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT id FROM oauth_sessions WHERE client_id = $clientID AND
-     *  redirect_uri = $redirectUri AND auth_code = $authCode
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *     [id] => (int) The session ID
-     *     [client_id] => (string) The client ID
-     *     [redirect_uri] => (string) The redirect URI
-     *     [owner_type] => (string) The session owner type
-     *     [owner_id] => (string) The session owner's ID
-     *     [auth_code] => (string) The authorisation code
-     *     [stage] => (string) The session's stage
-     *     [first_requested] => (int) Unix timestamp of the time the session was
-     *      first generated
-     *     [last_updated] => (int) Unix timestamp of the time the session was
-     *      last updated
-     * )
-     * </code>
-     *
-     * @param  string     $clientId    The client ID
-     * @param  string     $redirectUri The redirect URI
-     * @param  string     $authCode    The authorisation code
-     * @return  int|bool   Returns the session ID if the auth code
-     *  is valid otherwise returns false
-     */
-    public function validateAuthCode(
-        $clientId,
-        $redirectUri,
-        $authCode
-    );
-
-    /**
-     * Return the session ID for a given session owner and client combination
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT id FROM oauth_sessions WHERE client_id = $clientId
-     *  AND owner_type = $type AND owner_id = $typeId
-     * </code>
-     *
-     * @param  string      $type     The session owner's type
-     * @param  string      $typeId   The session owner's ID
-     * @param  string      $clientId The client ID
-     * @return string|null           Return the session ID as an integer if
-     *  found otherwise returns false
-     */
-    public function hasSession(
-        $type,
-        $typeId,
-        $clientId
-    );
-
-    /**
-     * Return the access token for a given session
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT access_token FROM oauth_sessions WHERE id = $sessionId
-     * </code>
-     *
-     * @param  int         $sessionId The OAuth session ID
-     * @return string|null            Returns the access token as a string if
-     *  found otherwise returns null
-     */
-    public function getAccessToken($sessionId);
-
-    /**
-     * Removes an authorisation code associated with a session
-     *
-     * Database query:
-     *
-     * <code>
-     * UPDATE oauth_sessions SET auth_code = NULL WHERE id = $sessionId
-     * </code>
-     *
-     * @param  int    $sessionId The OAuth session ID
-     * @return void
-     */
-    public function removeAuthCode($sessionId);
-
-    /**
-     * Sets a sessions access token
-     *
-     * Database query:
-     *
-     * <code>
-     * UPDATE oauth_sessions SET access_token = $accessToken WHERE id =
-     *  $sessionId
-     * </code>
-     *
-     * @param int    $sessionId   The OAuth session ID
-     * @param string $accessToken The access token
-     * @return void
-     */
-    public function setAccessToken(
-        $sessionId,
-        $accessToken
-    );
-
-    /**
-     * Associates a session with a scope
-     *
-     * Database query:
-     *
-     * <code>
-     * INSERT INTO oauth_session_scopes (session_id, scope) VALUE ($sessionId,
-     *  $scope)
-     * </code>
-     *
-     * @param int    $sessionId The session ID
-     * @param string $scope     The scope
-     * @return void
-     */
-    public function addSessionScope(
-        $sessionId,
-        $scope
-    );
-
-    /**
-     * Return information about a scope
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT * FROM scopes WHERE scope = $scope
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *     [id] => (int) The scope's ID
-     *     [scope] => (string) The scope itself
-     *     [name] => (string) The scope's name
-     *     [description] => (string) The scope's description
-     * )
-     * </code>
-     *
-     * @param  string $scope The scope
-     * @return array
-     */
-    public function getScope($scope);
-
-    /**
-     * Associate a session's scopes with an access token
-     *
-     * Database query:
-     *
-     * <code>
-     * UPDATE oauth_session_scopes SET access_token = $accessToken WHERE
-     *  session_id = $sessionId
-     * </code>
-     *
-     * @param  int    $sessionId   The session ID
-     * @param  string $accessToken The access token
-     * @return void
-     */
-    public function updateSessionScopeAccessToken(
-        $sessionId,
-        $accessToken
-    );
-
-    /**
-     * Return the scopes associated with an access token
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT scopes.scope, scopes.name, scopes.description FROM
-     * oauth_session_scopes JOIN scopes ON oauth_session_scopes.scope =
-     *  scopes.scope WHERE access_token = $accessToken
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *     [0] => Array
-     *         (
-     *             [scope] => (string) The scope
-     *             [name] => (string) The scope's name
-     *             [description] => (string) The scope's description
-     *         )
-     * )
-     * </code>
-     *
-     * @param  string $accessToken The access token
-     * @return array
-     */
-    public function accessTokenScopes($accessToken);
-}

src/Oauth2/Authentication/Server.php

@@ -1,557 +0,0 @@
-<?php
-
-namespace Oauth2\Authentication;
-
-class ClientException extends \Exception
-{
-
-}
-
-class UserException extends \Exception
-{
-
-}
-
-class ServerException extends \Exception
-{
-
-}
-
-class Server
-{
-    /**
-     * Reference to the database abstractor
-     * @var object
-     */
-    private $_db = null;
-
-    /**
-     * Server configuration
-     * @var array
-     */
-    private $_config = array(
-        'scope_delimeter'       =>  ',',
-        'access_token_ttl'   =>  null
-    );
-
-    /**
-     * Supported response types
-     * @var array
-     */
-    private $_responseTypes =   array(
-        'code'
-    );
-    
-    /**
-     * Supported grant types
-     * @var array
-     */
-    private $_grantTypes    =   array(
-        'authorization_code'
-    );
-
-    /**
-     * Exception error codes
-     * @var array
-     */
-    public $exceptionCodes = array(
-        0   =>  'invalid_request',
-        1   =>  'unauthorized_client',
-        2   =>  'access_denied',
-        3   =>  'unsupported_response_type',
-        4   =>  'invalid_scope',
-        5   =>  'server_error',
-        6   =>  'temporarily_unavailable',
-        7   =>  'unsupported_grant_type',
-        8   =>  'invalid_client',
-        9   =>  'invalid_grant'
-    );
-
-    /**
-     * Error codes.
-     * 
-     * To provide i8ln errors just overwrite the keys
-     * 
-     * @var array
-     */
-    public $errors = array(
-        'invalid_request'   =>  'The request is missing a required parameter, includes an invalid parameter value, includes a parameter more than once, or is otherwise malformed. Check the "%s" parameter.',
-        'unauthorized_client'   =>  'The client is not authorized to request an access token using this method.',
-        'access_denied' =>  'The resource owner or authorization server denied the request.',
-        'unsupported_response_type' =>  'The authorization server does not support obtaining an access token using this method.',
-        'invalid_scope' =>  'The requested scope is invalid, unknown, or malformed. Check the "%s" scope.',
-        'server_error'  =>  'The authorization server encountered an unexpected condition which prevented it from fulfilling the request.',
-        'temporarily_unavailable'   =>  'The authorization server is currently unable to handle the request due to a temporary overloading or maintenance of the server.',
-        'unsupported_grant_type'    =>  'The authorization grant type is not supported by the authorization server',
-        'invalid_client'    =>  'Client authentication failed',
-        'invalid_grant'     =>  'The provided authorization grant is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client. Check the "%s" parameter.'
-    );
-
-    /**
-     * Constructor
-     * 
-     * @access public
-     * @param  array $options Optional list of options to overwrite the defaults
-     * @return void
-     */
-    public function __construct($options = null)
-    {
-        if ($options !== null) {
-            $this->options = array_merge($this->_config, $options);
-        }
-    }
-
-    /**
-     * Register a database abstrator class
-     * 
-     * @access public
-     * @param  object $db A class that implements OAuth2ServerDatabase
-     * @return void
-     */
-    public function registerDbAbstractor($db)
-    {
-        $this->_db = $db;
-    }
-
-    /**
-     * Check client authorise parameters
-     * 
-     * @access public
-     * @param  array $authParams Optional array of parsed $_GET keys
-     * @return array             Authorise request parameters
-     */
-    public function checkClientAuthoriseParams($authParams = null)
-    {
-        $params = array();
-
-        // Client ID
-        if ( ! isset($authParams['client_id']) && ! isset($_GET['client_id'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'client_id'), 0);
-
-        } else {
-
-            $params['client_id'] = (isset($authParams['client_id'])) ?
-                                            $authParams['client_id'] : 
-                                            $_GET['client_id'];
-
-        }
-
-        // Redirect URI
-        if ( ! isset($authParams['redirect_uri']) && ! isset($_GET['redirect_uri'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'redirect_uri'), 0);
-
-        } else {
-
-            $params['redirect_uri'] = (isset($authParams['redirect_uri'])) ?
-                                                $authParams['redirect_uri'] :
-                                                $_GET['redirect_uri'];
-
-        }
-
-        // Validate client ID and redirect URI
-        $clientDetails = $this->_dbCall(
-            'validateClient',
-            $params['client_id'],
-            null,
-            $params['redirect_uri']
-        );
-
-        if ($clientDetails === false) {
-
-            throw new ClientException($this->errors['invalid_client'], 8);
-        }
-
-        // Response type
-        if ( ! isset($authParams['response_type']) && ! isset($_GET['response_type'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'response_type'), 0);
-
-        } else {
-
-            $params['response_type'] = (isset($authParams['response_type'])) ?
-                                                $authParams['response_type'] :
-                                                $_GET['response_type'];
-
-            // Ensure response type is one that is recognised
-            if ( ! in_array($params['response_type'], $this->_responseTypes)) {
-
-                throw new ClientException($this->errors['unsupported_response_type'], 3);
-
-            }
-        }
-
-        // Get and validate scopes
-        if (isset($authParams['scope']) || isset($_GET['scope'])) {
-
-            $scopes = (isset($_GET['scope'])) ?
-                                $_GET['scope'] :
-                                $authParams['scope'];
-
-            $scopes = explode($this->_config['scope_delimeter'], $scopes);
-
-            // Remove any junk scopes
-            for ($i = 0; $i < count($scopes); $i++) {
-
-                $scopes[$i] = trim($scopes[$i]);
-
-                if ($scopes[$i] === '') {
-                    unset($scopes[$i]);
-                }
-            }
-
-            if (count($scopes) === 0) {
-
-                throw new ClientException(sprintf($this->errors['invalid_request'], 'scope'), 0);
-            }
-
-            $params['scopes'] = array();
-
-            foreach ($scopes as $scope) {
-
-                $scopeDetails = $this->_dbCall(
-                    'getScope',
-                    $scope
-                );
-                
-                if ($scopeDetails === false) {
-
-                    throw new ClientException(sprintf($this->errors['invalid_scope'], $scope), 4);
-
-                }
-
-                $params['scopes'][] = $scopeDetails;
-
-            }
-        }
-
-        return $params;
-    }
-
-    /**
-     * Parse a new authorise request
-     * 
-     * @param  string $type            The session owner's type
-     * @param  string $typeId          The session owner's ID
-     * @param  array  $authoriseParams The authorise request $_GET parameters
-     * @return string                  An authorisation code
-     */
-    public function newAuthoriseRequest($type, $typeId, $authoriseParams)
-    {
-        // Remove any old sessions the user might have
-        $this->_dbCall(
-            'deleteSession',
-            $authoriseParams['client_id'],
-            $type,
-            $typeId
-        );
-
-        // Create the new auth code
-        $authCode = $this->newAuthCode(
-            $authoriseParams['client_id'], 
-            'user',
-            $typeId,
-            $authoriseParams['redirect_uri'], 
-            $authoriseParams['scopes']
-        );
-
-        return $authCode;
-    }
-
-    /**
-     * Generate a unique code
-     * 
-     * Generate a unique code for an authorisation code, or token
-     * 
-     * @return string A unique code
-     */
-    private function generateCode()
-    {
-        return sha1(uniqid(microtime()));
-    }
-
-    /**
-     * Create a new authorisation code
-     * 
-     * @param  string $clientId    The client ID
-     * @param  string $type        The type of the owner of the session
-     * @param  string $typeId      The session owner's ID
-     * @param  string $redirectUri The redirect URI
-     * @param  array  $scopes      The requested scopes
-     * @param  string $accessToken The access token (default = null)
-     * @return string              An authorisation code
-     */
-    private function newAuthCode($clientId, $type, $typeId, $redirectUri, $scopes = array(), $accessToken = null)
-    {
-        $authCode = $this->generateCode();
-
-        // If an access token exists then update the existing session with the 
-        // new authorisation code otherwise create a new session
-        if ($accessToken !== null) {
-
-            $this->_dbCall(
-                'updateSession',
-                $clientId,
-                $type,
-                $typeId,
-                $authCode,
-                $accessToken,
-                'requested'
-            );
-        
-        } else {
-
-            // Delete any existing sessions just to be sure
-            $this->_dbCall('deleteSession', $clientId, $type, $typeId);
-               
-            // Create a new session     
-            $sessionId = $this->_dbCall(
-                'newSession',
-                $clientId,
-                $redirectUri,
-                $type,
-                $typeId,
-                $authCode,
-                null,
-                null,
-                'requested'
-            );
-                        
-            // Add the scopes
-            foreach ($scopes as $key => $scope) {
-
-                $this->_dbCall(
-                    'addSessionScope',
-                    $sessionId,
-                    $scope['scope']
-                );
-
-            }
-
-        }
-        
-        return $authCode;
-    }
-
-    /**
-     * Issue an access token
-     * 
-     * @access public
-     * 
-     * @param  array $authParams Optional array of parsed $_POST keys
-     * 
-     * @return array             Authorise request parameters
-     */
-    public function issueAccessToken($authParams = null)
-    {
-        $params = array();
-
-        if ( ! isset($authParams['grant_type']) && ! isset($_POST['grant_type'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'grant_type'), 0);
-
-        } else {
-
-            $params['grant_type'] = (isset($authParams['grant_type'])) ?
-                                                $authParams['grant_type'] :
-                                                $_POST['grant_type'];
-
-            // Ensure grant type is one that is recognised
-            if ( ! in_array($params['grant_type'], $this->_grantTypes)) {
-
-                throw new ClientException($this->errors['unsupported_grant_type'], 7);
-
-            }
-        }
-
-        switch ($params['grant_type'])
-        {
-            
-            case 'authorization_code': // Authorization code grant
-                return $this->completeAuthCodeGrant($authParams, $params);
-                break;  
-
-            case 'refresh_token': // Refresh token
-            case 'password': // Resource owner password credentials grant
-            case 'client_credentials': // Client credentials grant
-            default: // Unsupported
-                throw new ServerException($this->errors['server_error'] . 'Tried to process an unsuppported grant type.', 5);
-                break;
-        }
-    }
-
-    /**
-     * Complete the authorisation code grant
-     * 
-     * @access private
-     * 
-     * @param  array $authParams Array of parsed $_POST keys
-     * @param  array $params     Generated parameters from issueAccessToken()
-     * 
-     * @return array             Authorise request parameters
-     */
-    private function completeAuthCodeGrant($authParams = array(), $params = array())
-    {
-        // Client ID
-        if ( ! isset($authParams['client_id']) && ! isset($_POST['client_id'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'client_id'), 0);
-
-        } else {
-
-            $params['client_id'] = (isset($authParams['client_id'])) ?
-                                            $authParams['client_id'] :
-                                            $_POST['client_id'];
-
-        }
-
-        // Client secret
-        if ( ! isset($authParams['client_secret']) && ! isset($_POST['client_secret'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'client_secret'), 0);
-
-        } else {
-
-            $params['client_secret'] = (isset($authParams['client_secret'])) ?
-                                                $authParams['client_secret'] :
-                                                $_POST['client_secret'];
-
-        }
-
-        // Redirect URI
-        if ( ! isset($authParams['redirect_uri']) && ! isset($_POST['redirect_uri'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'redirect_uri'), 0);
-
-        } else {
-
-            $params['redirect_uri'] = (isset($authParams['redirect_uri'])) ?
-                                                $authParams['redirect_uri'] :
-                                                $_POST['redirect_uri'];
-
-        }
-
-        // Validate client ID and redirect URI
-        $clientDetails = $this->_dbCall(
-            'validateClient',
-            $params['client_id'],
-            $params['client_secret'], 
-            $params['redirect_uri']
-        );
-
-        if ($clientDetails === false) {
-
-            throw new ClientException($this->errors['invalid_client'], 8);
-        }
-
-        // The authorization code
-        if ( ! isset($authParams['code']) && ! isset($_POST['code'])) {
-
-            throw new ClientException(sprintf($this->errors['invalid_request'], 'code'), 0);
-
-        } else {
-
-            $params['code'] = (isset($authParams['code'])) ?
-                                        $authParams['code'] :
-                                        $_POST['code'];
-
-        }
-
-        // Verify the authorization code matches the client_id and the
-        //  request_uri
-        $session = $this->_dbCall(
-            'validateAuthCode',
-            $params['client_id'],
-            $params['redirect_uri'],
-            $params['code']
-        );
-
-        if ( ! $session) {
-
-            throw new ClientException(sprintf($this->errors['invalid_grant'], 'code'), 9);
-        
-        } else {
-
-            // A session ID was returned so update it with an access token,
-            //  remove the authorisation code, change the stage to 'granted'
-
-            $accessToken = $this->generateCode();
-
-            $accessTokenExpires = ($this->_config['access_token_ttl'] === null) ?
-                                    null :
-                                    time() + $this->_config['access_token_ttl'];
-
-            $this->_dbCall(
-                'updateSession',
-                $session['id'],
-                null,
-                $accessToken,
-                $accessTokenExpires,
-                'granted'
-            );
-
-            // Update the session's scopes to reference the access token
-            $this->_dbCall(
-                'updateSessionScopeAccessToken',
-                $session['id'],
-                $accessToken
-            );
-
-            return array(
-                'access_token'  =>  $accessToken,
-                'token_type'    =>  'bearer',
-                'expires_in'    =>  $this->_config['access_token_ttl']
-            );
-        }
-    }
-
-    /**
-     * Generates the redirect uri with appended params
-     * 
-     * @param  string $redirectUri     The redirect URI
-     * @param  array  $params          The parameters to be appended to the URL
-     * @param  string $query_delimeter The query string delimiter (default: ?)
-     * 
-     * @return string                  The updated redirect URI
-     */
-    public function redirectUri($redirectUri, $params = array(), $queryDelimeter = '?')
-    {
-      
-        if (strstr($redirectUri, $queryDelimeter)) {
-
-            $redirectUri = $redirectUri . '&' . http_build_query($params);
-
-        } else {
-
-            $redirectUri = $redirectUri . $queryDelimeter . http_build_query($params);
-
-        }
-        
-        return $redirectUri;
-
-    }
-
-    /**
-     * Call database methods from the abstractor
-     * 
-     * @return mixed The query result
-     */
-    private function _dbCall()
-    {
-        if ($this->_db === null) {
-            throw new ServerException('No registered database abstractor');
-        }
-
-        if ( ! $this->_db instanceof Database) {
-            throw new ServerException('Registered database abstractor is not an instance of Oauth2\Authentication\Database');
-        }
-
-        $args = func_get_args();
-        $method = $args[0];
-        unset($args[0]);
-        $params = array_values($args);
-
-        return call_user_func_array(array($this->_db, $method), $params);
-    }
-}

src/Oauth2/Client/IDP.php

@@ -1,230 +0,0 @@
-<?php
-
-namespace OAuth2\Client;
-
-use Guzzle\Service\Client as GuzzleClient;
-
-class IDPException extends \Exception
-{
-    protected $result;
-
-    public function __construct($result)
-    {
-        $this->result = $result;
-
-        $code = isset($result['code']) ? $result['code'] : 0;
-
-        if (isset($result['error'])) {
-
-            // OAuth 2.0 Draft 10 style
-            $message = $result['error'];
-
-        } elseif (isset($result['message'])) {
-
-            // cURL style
-            $message = $result['message'];
-
-        } else {
-
-            $message = 'Unknown Error.';
-
-        }
-
-        parent::__construct($message['message'], $message['code']);
-    }
-
-    public function getType()
-    {
-        if (isset($this->result['error'])) {
-
-            $message = $this->result['error'];
-
-            if (is_string($message)) {
-                // OAuth 2.0 Draft 10 style
-                return $message;
-            }
-        }
-
-        return 'Exception';
-    }
-
-    /**
-     * To make debugging easier.
-     *
-     * @returns
-     *   The string representation of the error.
-     */
-    public function __toString()
-    {
-        $str = $this->getType() . ': ';
-
-        if ($this->code != 0) {
-            $str .= $this->code . ': ';
-        }
-
-        return $str . $this->message;
-    }
-
-}
-
-abstract class IDP {
-
-    public $clientId = '';
-
-    public $clientSecret = '';
-
-    public $redirectUri = '';
-
-    public $name;
-
-    public $uidKey = 'uid';
-
-    public $scopes = array();
-
-    public $method = 'post';
-
-    public $scopeSeperator = ',';
-
-    public $responseType = 'json';
-
-    public function __construct($options)
-    {
-        foreach ($options as $option => $value) {
-            if (isset($this->{$option})) {
-                $this->{$option} = $value;
-            }
-        }
-    }
-
-    abstract public function urlAuthorize();
-
-    abstract public function urlAccessToken();
-
-    abstract public function urlUserDetails(\Oauth2\Client\Token\Access $token);
-
-    abstract public function userDetails($response, \Oauth2\Client\Token\Access $token);
-
-    public function authorize($options = array())
-    {
-        $state = md5(uniqid(rand(), TRUE));
-        setcookie($this->name.'_authorize_state', $state);
-
-        $params = array(
-            'client_id'         => $this->clientId,
-            'redirect_uri'      => $this->redirectUri,
-            'state'             => $state,
-            'scope'             => is_array($this->scope) ? implode($this->scopeSeperator, $this->scope) : $this->scope,
-            'response_type'     => isset($options['response_type']) ? $options['response_type'] : 'code',
-            'approval_prompt'   => 'force' // - google force-recheck
-        );
-
-        header('Location: ' . $this->urlAuthorize().'?'.http_build_query($params));
-        exit;
-    }
-
-    public function getAccessToken($code = NULL, $options = array())
-    {
-        if ($code === NULL) {
-            throw new \BadMethodCallException('Missing authorization code');
-        }
-
-        $params = array(
-            'client_id'     => $this->clientId,
-            'client_secret' => $this->clientSecret,
-            'grant_type'    => isset($options['grantType']) ? $options['grantType'] : 'authorization_code',
-        );
-
-        switch ($params['grant_type']) {
-
-            case 'authorization_code':
-                $params['code'] = $code;
-                $params['redirect_uri'] = isset($options['redirectUri']) ? $options['redirectUri'] : $this->redirectUri;
-            break;
-
-            case 'refresh_token':
-                $params['refresh_token'] = $code;
-            break;
-
-        }
-
-        try {
-
-            switch ($this->method) {
-
-                case 'get':
-
-                    $client = new GuzzleClient($this->urlAccessToken() . '?' . http_build_query($params));
-                    $request = $client->send();
-                    $response = $request->getBody();
-
-                    break;
-
-                case 'post':
-
-                    $client = new GuzzleClient($this->urlAccessToken());
-                    $request = $client->post(null, null, $params)->send();
-                    $response = $request->getBody();
-
-                    break;
-
-            }
-
-        }
-
-        catch (\Guzzle\Http\Exception\BadResponseException $e)
-        {
-            $raw_response = explode("\n", $e->getResponse());
-            $response = end($raw_response);
-        }
-
-        switch ($this->responseType) {
-
-            case 'json':
-                $result = json_decode($response, true);
-            break;
-
-            case 'string':
-                parse_str($response, $result);
-            break;
-
-        }
-
-        if (isset($result['error']) && ! empty($result['error'])) {
-
-            throw new \Oauth2\Client\IDPException($result);
-
-        }
-
-        switch ($params['grant_type']) {
-
-            case 'authorization_code':
-                return \Oauth2\Client\Token::factory('access', $result);
-            break;
-
-            case 'refresh_token':
-                return \Oauth2\Client\Token::factory('refresh', $result);
-            break;
-
-        }
-    }
-
-    public function getUserDetails(\Oauth2\Client\Token\Access $token)
-    {
-        $url = $this->urlUserDetails($token);
-
-        try {
-            $client = new GuzzleClient($url);
-            $request = $client->get()->send();
-            $response = $request->getBody();
-
-            return $this->userDetails(json_decode($response), $token);
-        }
-
-        catch (\Guzzle\Http\Exception\BadResponseException $e)
-        {
-            $raw_response = explode("\n", $e->getResponse());
-            throw new \Oauth2\Client\IDPException(end($raw_response));
-        }
-    }
-
-}

src/Oauth2/Client/Provider.php

@@ -1,19 +0,0 @@
-<?php
-
-namespace OAuth2\Client;
-
-class Provider
-{
-	private function __constuct() {}
-
-	public static function factory($name, array $options = null)
-	{
-		if ( ! class_exists($name)) {
-
-			throw new OAuth2\Client\Exception('There is no identity provider called: '.$name);
-
-		}
-
-		return new $name($options);
-	}
-}

src/Oauth2/Client/Provider/Blooie.php

@@ -1,42 +0,0 @@
-<?php
-
-class Blooie extends Oauth2\Client\IDP
-{  
-	public $scope = array('user.profile', 'user.picture');
-
-	public $method = 'POST';
-
-	public function urlAuthorize()
-	{
-		return 'https://bloo.ie/oauth';	
-	}
-
-	public function urlAccessToken()
-	{
-		return 'https://bloo.ie/oauth/access_token';
-	}
-
-	public function getUserInfo(Oauth2\Token\Access $token)
-	{
-		$url = 'https://graph.facebook.com/me?'.http_build_query(array(
-			'access_token' => $token->access_token,
-		));
-
-		$user = json_decode(file_get_contents($url));
-
-		return array(
-			'uid' => $user->id,
-			'nickname' => $user->username,
-			'name' => $user->name,
-			'first_name' => $user->first_name,
-			'last_name' => $user->last_name,
-			'email' => isset($user->email) ? $user->email : null,
-			'location' => isset($user->hometown->name) ? $user->hometown->name : null,
-			'description' => isset($user->bio) ? $user->bio : null,
-			'image' => 'https://graph.facebook.com/me/picture?type=normal&access_token='.$token->access_token,
-			'urls' => array(
-			  'Facebook' => $user->link,
-			),
-		);
-	}
-}

src/Oauth2/Client/Provider/Facebook.php

@@ -1,49 +0,0 @@
-<?php
-/**
- * Facebook OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class Facebook extends Oauth2\Client\IDP
-{
-	protected $scope = array('offline_access', 'email', 'read_stream');
-
-	public function urlAuthorize()
-	{
-		return 'https://www.facebook.com/dialog/oauth';
-	}
-
-	public function urlAccessToken()
-	{
-		return 'https://graph.facebook.com/oauth/access_token';
-	}
-
-	public function getUserInfo(Oauth2\Token\Access $token)
-	{
-		$url = 'https://graph.facebook.com/me?'.http_build_query(array(
-			'access_token' => $token->access_token,
-		));
-
-		$user = json_decode(file_get_contents($url));
-
-		return array(
-			'uid' => $user->id,
-			'nickname' => isset($user->username) ? $user->username : null,
-			'name' => $user->name,
-			'first_name' => $user->first_name,
-			'last_name' => $user->last_name,
-			'email' => isset($user->email) ? $user->email : null,
-			'location' => isset($user->hometown->name) ? $user->hometown->name : null,
-			'description' => isset($user->bio) ? $user->bio : null,
-			'image' => 'https://graph.facebook.com/me/picture?type=normal&access_token='.$token->access_token,
-			'urls' => array(
-			  'Facebook' => $user->link,
-			),
-		);
-	}
-}

src/Oauth2/Client/Provider/Foursquare.php

@@ -1,45 +0,0 @@
-<?php
-/**
- * Foursquare OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class Foursquare extends Oauth2\Client\IDP
-{  
-	public $method = 'POST';
-
-	public function urlAuthorize()
-	{
-		return 'https://foursquare.com/oauth2/authenticate';
-	}
-
-	public function urlAccessToken()
-	{
-		return 'https://foursquare.com/oauth2/access_token';
-	}
-
-	public function getUserInfo(Oauth2\Token\Access $token)
-	{
-		$url = 'https://api.foursquare.com/v2/users/self?'.http_build_query(array(
-			'oauth_token' => $token->access_token,
-		));
-
-		$response = json_decode(file_get_contents($url));
-
-		$user = $response->response->user;
-
-		// Create a response from the request
-		return array(
-			'uid' => $user->id,
-			'name' => sprintf('%s %s', $user->firstName, $user->lastName),
-			'email' => $user->contact->email,
-			'image' => $user->photo,
-			'location' => $user->homeCity,
-		);
-	}
-}

src/Oauth2/Client/Provider/Github.php

@@ -1,43 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * GitHub OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Github extends Oauth2\Client\IDP
-{
-	public function urlAuthorize()
-	{
-		return 'https://github.com/login/oauth/authorize';
-	}
-
-	public function urlAccessToken()
-	{
-		return 'https://github.com/login/oauth/access_token';
-	}
-
-	public function getUserInfo(Oauth\Token\Access $token)
-	{
-		$url = 'https://api.github.com/user?'.http_build_query(array(
-			'access_token' => $token->access_token,
-		));
-
-		$user = json_decode(file_get_contents($url));
-
-		return array(
-			'uid' => $user->id,
-			'nickname' => $user->login,
-			'name' => $user->name,
-			'email' => $user->email,
-			'urls' => array(
-			  'GitHub' => 'http://github.com/'.$user->login,
-			  'Blog' => $user->blog,
-			),
-		);
-	}
-}

src/Oauth2/Client/Provider/Google.php

@@ -1,84 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Google OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Google extends OAuth2_Provider
-{
-	/**
-	 * @var  string  the method to use when requesting tokens
-	 */
-	public $method = 'POST';
-
-	/**
-	 * @var  string  scope separator, most use "," but some like Google are spaces
-	 */
-	public $scope_seperator = ' ';
-
-	public function url_authorize()
-	{
-		return 'https://accounts.google.com/o/oauth2/auth';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://accounts.google.com/o/oauth2/token';
-	}
-
-	public function __construct(array $options = array())
-	{
-		// Now make sure we have the default scope to get user data
-		empty($options['scope']) and $options['scope'] = array(
-			'https://www.googleapis.com/auth/userinfo.profile', 
-			'https://www.googleapis.com/auth/userinfo.email'
-		);
-	
-		// Array it if its string
-		$options['scope'] = (array) $options['scope'];
-		
-		parent::__construct($options);
-	}
-
-	/*
-	* Get access to the API
-	*
-	* @param	string	The access code
-	* @return	object	Success or failure along with the response details
-	*/	
-	public function access($code, $options = array())
-	{
-		if ($code === null)
-		{
-			throw new OAuth2_Exception(array('message' => 'Expected Authorization Code from '.ucfirst($this->name).' is missing'));
-		}
-
-		return parent::access($code, $options);
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		$url = 'https://www.googleapis.com/oauth2/v1/userinfo?alt=json&'.http_build_query(array(
-			'access_token' => $token->access_token,
-		));
-		
-		$user = json_decode(file_get_contents($url), true);
-		return array(
-			'uid' => $user['id'],
-			'nickname' => url_title($user['name'], '_', true),
-			'name' => $user['name'],
-			'first_name' => $user['given_name'],
-			'last_name' => $user['family_name'],
-			'email' => $user['email'],
-			'location' => null,
-			'image' => (isset($user['picture'])) ? $user['picture'] : null,
-			'description' => null,
-			'urls' => array(),
-		);
-	}
-}

src/Oauth2/Client/Provider/Instagram.php

@@ -1,48 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Instagram OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Instagram extends OAuth2_Provider
-{
-	/**
-	 * @var  string  scope separator, most use "," but some like Google are spaces
-	 */
-	public $scope_seperator = '+';
-
-	/**
-	 * @var  string  the method to use when requesting tokens
-	 */
-	public $method = 'POST';
-
-	public function url_authorize()
-	{
-		return 'https://api.instagram.com/oauth/authorize';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://api.instagram.com/oauth/access_token';
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		$user = $token->user;
-
-		return array(
-			'uid' => $user->id,
-			'nickname' => $user->username,
-			'name' => $user->full_name,
-			'image' => $user->profile_picture,
-			'urls' => array(
-			  'website' => $user->website,
-			),
-		);
-	}
-}

src/Oauth2/Client/Provider/Mailchimp.php

@@ -1,36 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Mailchimp OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Mailchimp extends OAuth2_Provider
-{
-	/**
-	 * @var  string  the method to use when requesting tokens
-	 */
-	protected $method = 'POST';
-
-	public function url_authorize()
-	{
-		return 'https://login.mailchimp.com/oauth2/authorize';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://login.mailchimp.com/oauth2/token';
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		// Create a response from the request
-		return array(
-			'uid' => $token->access_token,
-		);
-	}
-}

src/Oauth2/Client/Provider/Mailru.php

@@ -1,73 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Mailru OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Lavr Lyndin
- */
-
-class OAuth2_Provider_Mailru extends OAuth2_Provider
-{
-	public $method = 'POST';
-
-	public function url_authorize()
-	{
-		return 'https://connect.mail.ru/oauth/authorize';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://connect.mail.ru/oauth/token';
-	}
-	
-	protected function sign_server_server(array $request_params, $secret_key)
-	{
-		ksort($request_params);
-		$params = '';
-		foreach ($request_params as $key => $value) {
-			$params .= "$key=$value";
-		}
-		return md5($params . $secret_key);
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		$request_params = array(
-			'app_id' => $this->client_id,
-			'method' => 'users.getInfo',
-			'uids' => $token->uid,
-			'access_token' => $token->access_token,
-			'secure' => 1
-		);
-		
-		$sig = $this->sign_server_server($request_params,$this->client_secret);
-		$url = 'http://www.appsmail.ru/platform/api?'.http_build_query($request_params).'&sig='.$sig;
-
-		$user = json_decode(file_get_contents($url));
-
-		return array(
-			'uid' => $user[0]->uid,
-			'nickname' => $user[0]->nick,
-			'name' => $user[0]->first_name.' '.$user[0]->last_name,
-			'first_name' => $user[0]->first_name,
-			'last_name' => $user[0]->last_name,
-			'email' => isset($user[0]->email) ? $user[0]->email : null,
-			'image' => isset($user[0]->pic_big) ? $user[0]->pic_big : null,
-		);
-	}
-	
-	public function authorize($options = array())
-	{
-		$state = md5(uniqid(rand(), TRUE));
-		get_instance()->session->set_userdata('state', $state);
-
-		$params = array(
-			'client_id' 		=> $this->client_id,
-			'redirect_uri' 		=> isset($options['redirect_uri']) ? $options['redirect_uri'] : $this->redirect_uri,
-			'response_type' 	=> 'code',
-		);
-
-		redirect($this->url_authorize().'?'.http_build_query($params));
-	}
-}

src/Oauth2/Client/Provider/Paypal.php

@@ -1,59 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * PayPal OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Paypal extends OAuth2_Provider
-{
-    /**
-     * @var  string  default scope (useful if a scope is required for user info)
-     */
-    protected $scope = array('https://identity.x.com/xidentity/resources/profile/me');
-
-    /**
-     * @var  string  the method to use when requesting tokens
-     */
-    protected $method = 'POST';
-
-    public function url_authorize()
-    {
-        return 'https://identity.x.com/xidentity/resources/authorize';
-    }
-
-    public function url_access_token()
-    {
-        return 'https://identity.x.com/xidentity/oauthtokenservice';
-    }
-
-    public function get_user_info(OAuth2_Token_Access $token)
-    {
-        $url = 'https://identity.x.com/xidentity/resources/profile/me?' . http_build_query(array(
-            'oauth_token' => $token->access_token
-        ));
-
-        $user = json_decode(file_get_contents($url));
-		$user = $user->identity;
-
-		return array(
-            'uid' => $user['userId'],
-            'nickname' => url_title($user['fullName'], '_', true),
-            'name' => $user['fullName'],
-            'first_name' => $user['firstName'],
-            'last_name' => $user['lastName'],
-            'email' => $user['emails'][0],
-            'location' => $user->addresses[0],
-            'image' => null,
-            'description' => null,
-            'urls' => array(
-				'PayPal' => null
-			)
-        );
-    }
-
-}

src/Oauth2/Client/Provider/Soundcloud.php

@@ -1,51 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Soundcloud OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Soundcloud extends OAuth2_Provider
-{	
-	/**
-	 * @var  string  the method to use when requesting tokens
-	 */
-	protected $method = 'POST';
-
-	public function url_authorize()
-	{
-		return 'https://soundcloud.com/connect';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://api.soundcloud.com/oauth2/token';
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		$url = 'https://api.soundcloud.com/me.json?'.http_build_query(array(
-			'oauth_token' => $token->access_token,
-		));
-
-		$user = json_decode(file_get_contents($url));
-
-		// Create a response from the request
-		return array(
-			'uid' => $user->id,
-			'nickname' => $user->username,
-			'name' => $user->full_name,
-			'location' => $user->country.' ,'.$user->country,
-			'description' => $user->description,
-			'image' => $user->avatar_url,
-			'urls' => array(
-				'MySpace' => $user->myspace_name,
-				'Website' => $user->website,
-			),
-		);
-	}
-}

src/Oauth2/Client/Provider/Vkontakte.php

@@ -1,54 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Vkontakte OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Lavr Lyndin
- */
-
-class OAuth2_Provider_Vkontakte extends OAuth2_Provider
-{
-	protected $method = 'POST';
-	public $uid_key = 'user_id';
-
-	public function url_authorize()
-	{
-		return 'http://oauth.vk.com/authorize';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://oauth.vk.com/access_token';
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		$scope = array('nickname', 'screen_name','photo_big');
-		$url = 'https://api.vk.com/method/users.get?'.http_build_query(array(
-			'uids' => $token->uid,
-			'fields' => implode(",",$scope),
-			'access_token' => $token->access_token,
-		));
-
-		$user = json_decode(file_get_contents($url))->response;
-
-		if(sizeof($user)==0)
-			return null;
-		else
-			$user = $user[0];
-
-		return array(
-			'uid' => $user->uid,
-			'nickname' => isset($user->nickname) ? $user->nickname : null,
-			'name' => isset($user->name) ? $user->name : null,
-			'first_name' => isset($user->first_name) ? $user->first_name : null,
-			'last_name' => isset($user->last_name) ? $user->last_name : null,
-			'email' => null,
-			'location' => null,
-			'description' => null,
-			'image' => isset($user->photo_big) ? $user->photo_big : null,
-			'urls' => array(),
-		);
-	}
-}

src/Oauth2/Client/Provider/Windowslive.php

@@ -1,60 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Windows Live OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Phil Sturgeon
- * @copyright  (c) 2012 HappyNinjas Ltd
- * @license    http://philsturgeon.co.uk/code/dbad-license
- */
-
-class OAuth2_Provider_Windowslive extends OAuth2_Provider
-{	
-	protected $scope = array('wl.basic', 'wl.emails');
-	
-	/**
-	 * @var  string  the method to use when requesting tokens
-	 */
-	protected $method = 'POST';
-	
-	// authorise url
-	public function url_authorize()
-	{
-		return 'https://oauth.live.com/authorize';
-	}
-	
-	// access token url
-	public function url_access_token()
-	{
-		return 'https://oauth.live.com/token';
-	}
-	
-	// get basic user information
-	/********************************
-	** this can be extended through the 
-	** use of scopes, check out the document at
-	** http://msdn.microsoft.com/en-gb/library/hh243648.aspx#user
-	*********************************/
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		// define the get user information token
-		$url = 'https://apis.live.net/v5.0/me?'.http_build_query(array(
-			'access_token' => $token->access_token,
-		));
-		
-		// perform network request
-		$user = json_decode(file_get_contents($url));
-
-		// create a response from the request and return it
-		return array(
-			'uid' 		=> $user->id,
-			'name' 		=> $user->name,
-			'nickname' 	=> url_title($user->name, '_', true),
-//			'location' 	=> $user[''], # scope wl.postal_addresses is required
-										  # but won't be implemented by default
-			'locale' 	=> $user->locale,
-			'urls' 		=> array('Windows Live' => $user->link),
-		);
-	}
-}

src/Oauth2/Client/Provider/Yandex.php

@@ -1,115 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Yandex OAuth2 Provider
- *
- * @package    CodeIgniter/OAuth2
- * @category   Provider
- * @author     Lavr Lyndin
- */
-
-class OAuth2_Provider_Yandex extends OAuth2_Provider
-{
-	public $method = 'POST';
-	
-	public function url_authorize()
-	{
-		return 'https://oauth.yandex.ru/authorize';
-	}
-
-	public function url_access_token()
-	{
-		return 'https://oauth.yandex.ru/token';
-	}
-
-	public function get_user_info(OAuth2_Token_Access $token)
-	{
-		$opts = array(
-			'http' => array(
-				'method' => 'GET',
-				'header' => 'Authorization: OAuth '.$token->access_token
-			)
-		);
-		$_default_opts = stream_context_get_params(stream_context_get_default());
-		
-		$opts = array_merge_recursive($_default_opts['options'], $opts);
-		$context = stream_context_create($opts);
-		$url = 'http://api-yaru.yandex.ru/me/?format=json';
-
-		$user = json_decode(file_get_contents($url,false,$context));
-
-		preg_match("/\d+$/",$user->id,$uid);
-		
-		return array(
-			'uid' => $uid[0],
-			'nickname' => isset($user->name) ? $user->name : null,
-			'name' => isset($user->name) ? $user->name : null,
-			'first_name' => isset($user->first_name) ? $user->first_name : null,
-			'last_name' => isset($user->last_name) ? $user->last_name : null,
-			'email' => isset($user->email) ? $user->email : null,
-			'location' => isset($user->hometown->name) ? $user->hometown->name : null,
-			'description' => isset($user->bio) ? $user->bio : null,
-			'image' => $user->links->userpic,
-		);
-	}
-	
-	public function access($code, $options = array())
-	{
-		$params = array(
-			'client_id' 	=> $this->client_id,
-			'client_secret' => $this->client_secret,
-			'grant_type' 	=> isset($options['grant_type']) ? $options['grant_type'] : 'authorization_code',
-		);
-
-		switch ($params['grant_type'])
-		{
-			case 'authorization_code':
-				$params['code'] = $code;
-				$params['redirect_uri'] = isset($options['redirect_uri']) ? $options['redirect_uri'] : $this->redirect_uri;
-			break;
-
-			case 'refresh_token':
-				$params['refresh_token'] = $code;
-			break;
-		}
-
-		$response = null;	
-		$url = $this->url_access_token();
-
-		$curl = curl_init($url);
-
-		$headers[] = 'Content-Type: application/x-www-form-urlencoded; charset=UTF-8;';
-		curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
-
-//		curl_setopt($curl, CURLOPT_USERAGENT, 'yamolib-php');
-		curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
-		curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 30);
-		curl_setopt($curl, CURLOPT_TIMEOUT, 80);
-		curl_setopt($curl, CURLOPT_POST, true);
-		curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($params));
-		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
-		//        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
-		//        curl_setopt($curl, CURLOPT_CAINFO, dirname(__FILE__) . '/../data/ca-certificate.crt');
-
-		$response = curl_exec($curl);
-		curl_close($curl);
-
-		$return = json_decode($response, true);
-
-		if ( ! empty($return['error']))
-		{
-			throw new OAuth2_Exception($return);
-		}
-
-		switch ($params['grant_type'])
-		{
-			case 'authorization_code':
-				return OAuth2_Token::factory('access', $return);
-			break;
-
-			case 'refresh_token':
-				return OAuth2_Token::factory('refresh', $return);
-			break;
-		}
-	}
-
-}

src/Oauth2/Client/Token.php

@@ -1,46 +0,0 @@
-<?php
-
-namespace Oauth2\Client;
-
-abstract class Token
-{
-
-	/**
-	 * Create a new token object.
-	 *
-	 * @param   string  token type
-	 * @param   array   token options
-	 * @return  Token
-	 */
-	public static function factory($name = 'access', array $options = null)
-	{
-		include_once 'Token/'.ucfirst(strtolower($name)).'.php';
-
-		$class = 'Oauth2\Client\Token\\'.ucfirst($name);
-
-		return new $class($options);
-	}
-
-	/**
-	 * Return the value of any protected class variable.
-	 *
-	 * @param   string  variable name
-	 * @return  mixed
-	 */
-	public function __get($key)
-	{
-		return $this->$key;
-	}
-
-	/**
-	 * Return a boolean if the property is set
-	 *
-	 * @param   string  variable name
-	 * @return  bool
-	 */
-	public function __isset($key)
-	{
-		return isset($this->$key);
-	}
-
-} // End Token

src/Oauth2/Client/Token/Access.php

@@ -1,79 +0,0 @@
-<?php
-
-namespace Oauth2\Client\Token;
-
-/**
- * OAuth2 Token
- *
- * @package    OAuth2
- * @category   Token
- * @author     Phil Sturgeon
- * @copyright  (c) 2011 HappyNinjas Ltd
- */
-
-class Access extends \Oauth2\Client\Token
-{
-	/**
-	 * @var  string  accessToken
-	 */
-	protected $accessToken;
-
-	/**
-	 * @var  int  expires
-	 */
-	protected $expires;
-
-	/**
-	 * @var  string  refreshToken
-	 */
-	protected $refreshToken;
-
-	/**
-	 * @var  string  uid
-	 */
-	protected $uid;
-
-	/**
-	 * Sets the token, expiry, etc values.
-	 *
-	 * @param   array   token options
-	 * @return  void
-	 */
-	public function __construct(array $options = null)
-	{
-		if ( ! isset($options['access_token'])) {
-			throw new \BadMethodCallException('Required option not passed: access_token'.PHP_EOL.print_r($options, true));
-		}
-
-		$this->accessToken = $options['access_token'];
-
-		// Some providers (not many) give the uid here, so lets take it
-		isset($options['uid']) and $this->uid = $options['uid'];
-
-		//Vkontakte uses user_id instead of uid
-		isset($options['user_id']) and $this->uid = $options['user_id'];
-
-		//Mailru uses x_mailru_vid instead of uid
-		isset($options['x_mailru_vid']) and $this->uid = $options['x_mailru_vid'];
-
-		// We need to know when the token expires, add num. seconds to current time
-		isset($options['expires_in']) and $this->expires = time() + ((int) $options['expires_in']);
-
-		// Facebook is just being a spec ignoring jerk
-		isset($options['expires']) and $this->expires = time() + ((int) $options['expires']);
-
-		// Grab a refresh token so we can update access tokens when they expires
-		isset($options['refresh_token']) and $this->refreshToken = $options['refresh_token'];
-	}
-
-	/**
-	 * Returns the token key.
-	 *
-	 * @return  string
-	 */
-	public function __toString()
-	{
-		return (string) $this->accessToken;
-	}
-
-}

src/Oauth2/Client/Token/Authorize.php

@@ -1,55 +0,0 @@
-<?php
-/**
- * OAuth2 Token
- *
- * @package    OAuth2
- * @category   Token
- * @author     Phil Sturgeon
- * @copyright  (c) 2011 HappyNinjas Ltd
- */
-
-class Authorize extends \Oauth2\Client\Token
-{
-	/**
-	 * @var  string  code
-	 */
-	protected $code;
-
-	/**
-	 * @var  string  redirect_uri
-	 */
-	protected $redirectUri;
-
-	/**
-	 * Sets the token, expiry, etc values.
-	 *
-	 * @param   array   token options
-	 * @return  void
-	 */
-	public function __construct(array $options)
-	{
-		if ( ! isset($options['code'])) {
-
-            throw new Exception('Required option not passed: code');
-
-        } elseif ( ! isset($options['redirect_uri'])) {
-
-            throw new Exception('Required option not passed: redirect_uri');
-
-        }
-
-		$this->code = $options['code'];
-		$this->redirectUri = $options['redirect_uri'];
-	}
-
-	/**
-	 * Returns the token key.
-	 *
-	 * @return  string
-	 */
-	public function __toString()
-	{
-		return (string) $this->code;
-	}
-
-}

src/Oauth2/Resource/Database.php

@@ -1,59 +0,0 @@
-<?php
-
-namespace Oauth2\Resource;
-
-interface Database
-{
-    /**
-     * Validate an access token and return the session details.
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT id, owner_type, owner_id FROM oauth_sessions WHERE access_token =
-     *  $accessToken AND stage = 'granted' AND
-     *  access_token_expires > UNIX_TIMESTAMP(now())
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *     [id] => (int) The session ID
-     *     [owner_type] => (string) The session owner type
-     *     [owner_id] => (string) The session owner's ID
-     * )
-     * </code>
-     *
-     * @param  string     $accessToken The access token
-     * @return array|bool              Return an array on success or false on failure
-     */
-    public function validateAccessToken($accessToken);
-
-    /**
-     * Returns the scopes that the session is authorised with.
-     *
-     * Database query:
-     *
-     * <code>
-     * SELECT scope FROM oauth_session_scopes WHERE session_id =
-     *  $sessionId
-     * </code>
-     *
-     * Response:
-     *
-     * <code>
-     * Array
-     * (
-     *      [0] => (string) A scope
-     *      [1] => (string) Another scope
-     *      ...
-     * )
-     * </code>
-     *
-     * @param  int   $sessionId The session ID
-     * @return array            A list of scopes
-     */
-    public function sessionScopes($sessionId);
-}

src/Oauth2/Resource/Server.php

@@ -1,253 +0,0 @@
-<?php
-
-namespace Oauth2\Resource;
-
-class ServerException extends \Exception
-{
-
-}
-
-class ClientException extends \Exception
-{
-
-}
-
-class Server
-{
-    /**
-     * Reference to the database abstractor
-     * @var object
-     */
-    private $_db = null;
-
-    /**
-     * The access token.
-     * @access private
-     */
-    private $_accessToken = null;
-
-    /**
-     * The scopes the access token has access to.
-     * @access private
-     */
-    private $_scopes = array();
-
-    /**
-     * The type of owner of the access token.
-     * @access private
-     */
-    private $_type = null;
-
-    /**
-     * The ID of the owner of the access token.
-     * @access private
-     */
-    private $_typeId = null;
-
-    /**
-     * Server configuration
-     * @var array
-     */
-    private $_config = array(
-        'token_key' =>  'oauth_token'
-    );
-
-    /**
-     * Error codes.
-     *
-     * To provide i8ln errors just overwrite the keys
-     *
-     * @var array
-     */
-    public $errors = array(
-        'missing_access_token'  =>  'An access token was not presented with the request',
-        'invalid_access_token'  =>  'The access token is not registered with the resource server',
-        'missing_access_token_details'  =>  'The registered database abstractor did not return a valid access token details response',
-        'invalid_access_token_scopes'   =>  'The registered database abstractor did not return a valid access token scopes response',
-    );
-
-    /**
-     * Constructor
-     *
-     * @access public
-     * @return void
-     */
-    public function __construct($options = null)
-    {
-        if ($options !== null) {
-            $this->config = array_merge($this->config, $options);
-        }
-    }
-
-    /**
-     * Magic method to test if access token represents a particular owner type
-     * @param  string $method     The method name
-     * @param  mixed  $arguements The method arguements
-     * @return bool               If method is valid, and access token is owned by the requested party then true,
-     */
-    public function __call($method, $arguements = null)
-    {
-        if (substr($method, 0, 2) === 'is') {
-
-            if ($this->_type === strtolower(substr($method, 2))) {
-                return $this->_typeId;
-            }
-
-            return false;
-        }
-
-        trigger_error('Call to undefined function ' . $method . '()');
-    }
-
-    /**
-     * Register a database abstrator class
-     *
-     * @access public
-     * @param  object $db A class that implements OAuth2ServerDatabase
-     * @return void
-     */
-    public function registerDbAbstractor($db)
-    {
-        $this->_db = $db;
-    }
-
-    /**
-     * Init function
-     *
-     * @access public
-     * @return void
-     */
-    public function init()
-    {
-        $accessToken = null;
-
-        $_SERVER['REQUEST_METHOD'] = isset($_SERVER['REQUEST_METHOD']) ?
-                                                $_SERVER['REQUEST_METHOD'] :
-                                                null;
-
-        // Try and get the access token via an access_token or oauth_token parameter
-        switch ($_SERVER['REQUEST_METHOD'])
-        {
-            case 'POST':
-                $accessToken = isset($_POST[$this->_config['token_key']]) ?
-                                        $_POST[$this->_config['token_key']] :
-                                        null;
-                break;
-
-            default:
-            $accessToken = isset($_GET[$this->_config['token_key']]) ?
-                                        $_GET[$this->_config['token_key']] :
-                                        null;
-                break;
-        }
-
-        // Try and get an access token from the auth header
-        if (function_exists('getallheaders')) {
-
-            $headers = getallheaders();
-
-            if (isset($headers['Authorization'])) {
-
-                $rawToken = trim(str_replace('Bearer', '', $headers['Authorization']));
-
-                if ( ! empty($rawToken)) {
-                    $accessToken = $rawToken;
-                }
-            }
-        }
-
-        if ($accessToken) {
-
-            $result = $this->_dbCall('validateAccessToken', $accessToken);
-
-            if ($result === false) {
-
-                throw new ClientException($this->errors['invalid_access_token']);
-
-            } else {
-
-                if ( ! array_key_exists('id', $result) ||
-                     ! array_key_exists('owner_id', $result) ||
-                     ! array_key_exists('owner_type', $result)) {
-                    throw new ServerException($this->errors['missing_access_token_details']);
-                }
-
-                $this->_accessToken = $accessToken;
-                $this->_type = $result['owner_type'];
-                $this->_typeId = $result['owner_id'];
-
-                // Get the scopes
-                $scopes = $this->_dbCall('sessionScopes', $result['id']);
-
-                if ( ! is_array($scopes))
-                {
-                    throw new ServerException($this->errors['invalid_access_token_scopes']);
-                }
-
-                $this->_scopes = $scopes;
-            }
-
-        } else {
-
-            throw new ClientException($this->errors['missing_access_token']);
-
-        }
-    }
-
-    /**
-     * Test if the access token has a specific scope
-     *
-     * @param mixed $scopes Scope(s) to check
-     *
-     * @access public
-     * @return string|bool
-     */
-    public function hasScope($scopes)
-    {
-        if (is_string($scopes)) {
-
-            if (in_array($scopes, $this->_scopes)) {
-                return true;
-            }
-
-            return false;
-
-        } elseif (is_array($scopes)) {
-
-            foreach ($scopes as $scope) {
-
-                if ( ! in_array($scope, $this->_scopes)) {
-                    return false;
-                }
-
-            }
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Call database methods from the abstractor
-     *
-     * @return mixed The query result
-     */
-    private function _dbCall()
-    {
-        if ($this->_db === null) {
-            throw new ServerException('No registered database abstractor');
-        }
-
-        if ( ! $this->_db instanceof Database) {
-            throw new ServerException('The registered database abstractor is not an instance of Oauth2\Resource\Database');
-        }
-
-        $args = func_get_args();
-        $method = $args[0];
-        unset($args[0]);
-        $params = array_values($args);
-
-        return call_user_func_array(array($this->_db, $method), $params);
-    }
-}

src/ResourceServer.php

@@ -0,0 +1,157 @@
+<?php
+/**
+ * OAuth 2.0 Resource Server
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Exception\AccessDeniedException;
+use League\OAuth2\Server\Exception\InvalidRequestException;
+use League\OAuth2\Server\Storage\AccessTokenInterface;
+use League\OAuth2\Server\Storage\ClientInterface;
+use League\OAuth2\Server\Storage\ScopeInterface;
+use League\OAuth2\Server\Storage\SessionInterface;
+use League\OAuth2\Server\TokenType\Bearer;
+use League\OAuth2\Server\TokenType\MAC;
+
+/**
+ * OAuth 2.0 Resource Server
+ */
+class ResourceServer extends AbstractServer
+{
+    /**
+     * The access token
+     *
+     * @var \League\OAuth2\Server\Entity\AccessTokenEntity
+     */
+    protected $accessToken;
+
+    /**
+     * The query string key which is used by clients to present the access token (default: access_token)
+     *
+     * @var string
+     */
+    protected $tokenKey = 'access_token';
+
+    /**
+     * Initialise the resource server
+     *
+     * @param \League\OAuth2\Server\Storage\SessionInterface     $sessionStorage
+     * @param \League\OAuth2\Server\Storage\AccessTokenInterface $accessTokenStorage
+     * @param \League\OAuth2\Server\Storage\ClientInterface      $clientStorage
+     * @param \League\OAuth2\Server\Storage\ScopeInterface       $scopeStorage
+     *
+     * @return self
+     */
+    public function __construct(
+        SessionInterface $sessionStorage,
+        AccessTokenInterface $accessTokenStorage,
+        ClientInterface $clientStorage,
+        ScopeInterface $scopeStorage
+    ) {
+        $this->setSessionStorage($sessionStorage);
+        $this->setAccessTokenStorage($accessTokenStorage);
+        $this->setClientStorage($clientStorage);
+        $this->setScopeStorage($scopeStorage);
+
+        // Set Bearer as the default token type
+        $this->setTokenType(new Bearer());
+
+        parent::__construct();
+
+        return $this;
+    }
+
+    /**
+     * Sets the query string key for the access token.
+     *
+     * @param string $key The new query string key
+     *
+     * @return self
+     */
+    public function setIdKey($key)
+    {
+        $this->tokenKey = $key;
+
+        return $this;
+    }
+
+    /**
+     * Gets the access token
+     *
+     * @return \League\OAuth2\Server\Entity\AccessTokenEntity
+     */
+    public function getAccessToken()
+    {
+        return $this->accessToken;
+    }
+
+    /**
+     * Checks if the access token is valid or not
+     *
+     * @param bool                                                $headerOnly Limit Access Token to Authorization header
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity|null $accessToken Access Token
+     *
+     * @throws \League\OAuth2\Server\Exception\AccessDeniedException
+     * @throws \League\OAuth2\Server\Exception\InvalidRequestException
+     *
+     * @return bool
+     */
+    public function isValidRequest($headerOnly = true, $accessToken = null)
+    {
+        $accessTokenString = ($accessToken !== null)
+                                ? $accessToken
+                                : $this->determineAccessToken($headerOnly);
+
+        // Set the access token
+        $this->accessToken = $this->getAccessTokenStorage()->get($accessTokenString);
+
+        // Ensure the access token exists
+        if (!$this->accessToken instanceof AccessTokenEntity) {
+            throw new AccessDeniedException();
+        }
+
+        // Check the access token hasn't expired
+        // Ensure the auth code hasn't expired
+        if ($this->accessToken->isExpired() === true) {
+            throw new AccessDeniedException();
+        }
+
+        return true;
+    }
+
+    /**
+     * Reads in the access token from the headers
+     *
+     * @param bool $headerOnly Limit Access Token to Authorization header
+     *
+     * @throws \League\OAuth2\Server\Exception\InvalidRequestException Thrown if there is no access token presented
+     *
+     * @return string
+     */
+    public function determineAccessToken($headerOnly = false)
+    {
+	$authHeader = $this->getRequest()->headers->get('Authorization');
+
+        if (!empty($authHeader)) {
+            $accessToken = $this->getTokenType()->determineAccessTokenInHeader($this->getRequest());
+        } elseif ($headerOnly === false && (! $this->getTokenType() instanceof MAC)) {
+            $accessToken = ($this->getRequest()->server->get('REQUEST_METHOD') === 'GET')
+                                ? $this->getRequest()->query->get($this->tokenKey)
+                                : $this->getRequest()->request->get($this->tokenKey);
+        }
+
+        if (empty($accessToken)) {
+            throw new InvalidRequestException('access token');
+        }
+
+        return $accessToken;
+    }
+}

src/Storage/AbstractStorage.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * OAuth 2.0 abstract storage
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\AbstractServer;
+
+/**
+ * Abstract storage class
+ */
+abstract class AbstractStorage implements StorageInterface
+{
+    /**
+     * Server
+     *
+     * @var \League\OAuth2\Server\AbstractServer $server
+     */
+    protected $server;
+
+    /**
+     * Set the server
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     *
+     * @return self
+     */
+    public function setServer(AbstractServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * Return the server
+     *
+     * @return \League\OAuth2\Server\AbstractServer
+     */
+    protected function getServer()
+    {
+        return $this->server;
+    }
+}

src/Storage/AccessTokenInterface.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ * OAuth 2.0 Access token storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+
+/**
+ * Access token interface
+ */
+interface AccessTokenInterface extends StorageInterface
+{
+    /**
+     * Get an instance of Entity\AccessTokenEntity
+     *
+     * @param string $token The access token
+     *
+     * @return \League\OAuth2\Server\Entity\AccessTokenEntity | null
+     */
+    public function get($token);
+
+    /**
+     * Get the scopes for an access token
+     *
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity $token The access token
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[] Array of \League\OAuth2\Server\Entity\ScopeEntity
+     */
+    public function getScopes(AccessTokenEntity $token);
+
+    /**
+     * Creates a new access token
+     *
+     * @param string         $token      The access token
+     * @param integer        $expireTime The expire time expressed as a unix timestamp
+     * @param string|integer $sessionId  The session ID
+     *
+     * @return void
+     */
+    public function create($token, $expireTime, $sessionId);
+
+    /**
+     * Associate a scope with an acess token
+     *
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity $token The access token
+     * @param \League\OAuth2\Server\Entity\ScopeEntity       $scope The scope
+     *
+     * @return void
+     */
+    public function associateScope(AccessTokenEntity $token, ScopeEntity $scope);
+
+    /**
+     * Delete an access token
+     *
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity $token The access token to delete
+     *
+     * @return void
+     */
+    public function delete(AccessTokenEntity $token);
+}

src/Storage/AuthCodeInterface.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * OAuth 2.0 Auth code storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\Entity\AuthCodeEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+
+/**
+ * Auth code storage interface
+ */
+interface AuthCodeInterface extends StorageInterface
+{
+    /**
+     * Get the auth code
+     *
+     * @param string $code
+     *
+     * @return \League\OAuth2\Server\Entity\AuthCodeEntity | null
+     */
+    public function get($code);
+
+    /**
+     * Create an auth code.
+     *
+     * @param string  $token       The token ID
+     * @param integer $expireTime  Token expire time
+     * @param integer $sessionId   Session identifier
+     * @param string  $redirectUri Client redirect uri
+     *
+     * @return void
+     */
+    public function create($token, $expireTime, $sessionId, $redirectUri);
+
+    /**
+     * Get the scopes for an access token
+     *
+     * @param \League\OAuth2\Server\Entity\AuthCodeEntity $token The auth code
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[] Array of \League\OAuth2\Server\Entity\ScopeEntity
+     */
+    public function getScopes(AuthCodeEntity $token);
+
+    /**
+     * Associate a scope with an acess token
+     *
+     * @param \League\OAuth2\Server\Entity\AuthCodeEntity $token The auth code
+     * @param \League\OAuth2\Server\Entity\ScopeEntity    $scope The scope
+     *
+     * @return void
+     */
+    public function associateScope(AuthCodeEntity $token, ScopeEntity $scope);
+
+    /**
+     * Delete an access token
+     *
+     * @param \League\OAuth2\Server\Entity\AuthCodeEntity $token The access token to delete
+     *
+     * @return void
+     */
+    public function delete(AuthCodeEntity $token);
+}

src/Storage/ClientInterface.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * OAuth 2.0 Client storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\Entity\SessionEntity;
+
+/**
+ * Client storage interface
+ */
+interface ClientInterface extends StorageInterface
+{
+    /**
+     * Validate a client
+     *
+     * @param string $clientId     The client's ID
+     * @param string $clientSecret The client's secret (default = "null")
+     * @param string $redirectUri  The client's redirect URI (default = "null")
+     * @param string $grantType    The grant type used (default = "null")
+     *
+     * @return \League\OAuth2\Server\Entity\ClientEntity | null
+     */
+    public function get($clientId, $clientSecret = null, $redirectUri = null, $grantType = null);
+
+    /**
+     * Get the client associated with a session
+     *
+     * @param \League\OAuth2\Server\Entity\SessionEntity $session The session
+     *
+     * @return \League\OAuth2\Server\Entity\ClientEntity | null
+     */
+    public function getBySession(SessionEntity $session);
+}

src/Storage/MacTokenInterface.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * OAuth 2.0 MAC Token Interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+
+/**
+ * MacTokenInterface
+ */
+interface MacTokenInterface extends StorageInterface
+{
+    /**
+     * Create a MAC key linked to an access token
+     * @param  string $macKey
+     * @param  string $accessToken
+     * @return void
+     */
+    public function create($macKey, $accessToken);
+
+    /**
+     * Get a MAC key by access token
+     * @param  string $accessToken
+     * @return string
+     */
+    public function getByAccessToken($accessToken);
+}

src/Storage/RefreshTokenInterface.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * OAuth 2.0 Refresh token storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\Entity\RefreshTokenEntity;
+
+/**
+ * Refresh token interface
+ */
+interface RefreshTokenInterface extends StorageInterface
+{
+    /**
+     * Return a new instance of \League\OAuth2\Server\Entity\RefreshTokenEntity
+     *
+     * @param string $token
+     *
+     * @return \League\OAuth2\Server\Entity\RefreshTokenEntity | null
+     */
+    public function get($token);
+
+    /**
+     * Create a new refresh token_name
+     *
+     * @param string  $token
+     * @param integer $expireTime
+     * @param string  $accessToken
+     *
+     * @return \League\OAuth2\Server\Entity\RefreshTokenEntity
+     */
+    public function create($token, $expireTime, $accessToken);
+
+    /**
+     * Delete the refresh token
+     *
+     * @param \League\OAuth2\Server\Entity\RefreshTokenEntity $token
+     *
+     * @return void
+     */
+    public function delete(RefreshTokenEntity $token);
+}

src/Storage/ScopeInterface.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * OAuth 2.0 Scope storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+/**
+ * Scope interface
+ */
+interface ScopeInterface extends StorageInterface
+{
+    /**
+     * Return information about a scope
+     *
+     * @param string $scope     The scope
+     * @param string $grantType The grant type used in the request (default = "null")
+     * @param string $clientId  The client sending the request (default = "null")
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity | null
+     */
+    public function get($scope, $grantType = null, $clientId = null);
+}

src/Storage/SessionInterface.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * OAuth 2.0 Session storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\Entity\AccessTokenEntity;
+use League\OAuth2\Server\Entity\AuthCodeEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Entity\SessionEntity;
+
+/**
+ * Session storage interface
+ */
+interface SessionInterface extends StorageInterface
+{
+    /**
+     * Get a session from an access token
+     *
+     * @param \League\OAuth2\Server\Entity\AccessTokenEntity $accessToken The access token
+     *
+     * @return \League\OAuth2\Server\Entity\SessionEntity | null
+     */
+    public function getByAccessToken(AccessTokenEntity $accessToken);
+
+    /**
+     * Get a session from an auth code
+     *
+     * @param \League\OAuth2\Server\Entity\AuthCodeEntity $authCode The auth code
+     *
+     * @return \League\OAuth2\Server\Entity\SessionEntity | null
+     */
+    public function getByAuthCode(AuthCodeEntity $authCode);
+
+    /**
+     * Get a session's scopes
+     *
+     * @param  \League\OAuth2\Server\Entity\SessionEntity
+     *
+     * @return \League\OAuth2\Server\Entity\ScopeEntity[] Array of \League\OAuth2\Server\Entity\ScopeEntity
+     */
+    public function getScopes(SessionEntity $session);
+
+    /**
+     * Create a new session
+     *
+     * @param string $ownerType         Session owner's type (user, client)
+     * @param string $ownerId           Session owner's ID
+     * @param string $clientId          Client ID
+     * @param string $clientRedirectUri Client redirect URI (default = null)
+     *
+     * @return integer The session's ID
+     */
+    public function create($ownerType, $ownerId, $clientId, $clientRedirectUri = null);
+
+    /**
+     * Associate a scope with a session
+     *
+     * @param \League\OAuth2\Server\Entity\SessionEntity $session The session
+     * @param \League\OAuth2\Server\Entity\ScopeEntity   $scope   The scope
+     *
+     * @return void
+     */
+    public function associateScope(SessionEntity $session, ScopeEntity $scope);
+}

src/Storage/StorageInterface.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * OAuth 2.0 Storage interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Storage;
+
+use League\OAuth2\Server\AbstractServer;
+
+/**
+ * Storage interface
+ */
+interface StorageInterface
+{
+    /**
+     * Set the server
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     */
+    public function setServer(AbstractServer $server);
+}

src/TokenType/AbstractTokenType.php

@@ -0,0 +1,75 @@
+<?php
+/**
+ * OAuth 2.0 Abstract Token Type
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\TokenType;
+
+use League\OAuth2\Server\AbstractServer;
+use League\OAuth2\Server\Entity\SessionEntity;
+
+abstract class AbstractTokenType
+{
+    /**
+     * Response array
+     *
+     * @var array
+     */
+    protected $response = [];
+
+    /**
+     * Server
+     *
+     * @var \League\OAuth2\Server\AbstractServer $server
+     */
+    protected $server;
+
+    /**
+     * Server
+     *
+     * @var \League\OAuth2\Server\Entity\SessionEntity $session
+     */
+    protected $session;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setServer(AbstractServer $server)
+    {
+        $this->server = $server;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setSession(SessionEntity $session)
+    {
+        $this->session = $session;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setParam($key, $value)
+    {
+        $this->response[$key] = $value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getParam($key)
+    {
+        return isset($this->response[$key]) ? $this->response[$key] : null;
+    }
+}

src/TokenType/Bearer.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * OAuth 2.0 Bearer Token Type
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\TokenType;
+
+use Symfony\Component\HttpFoundation\Request;
+
+class Bearer extends AbstractTokenType implements TokenTypeInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function generateResponse()
+    {
+        $return = [
+            'access_token'  =>  $this->getParam('access_token'),
+            'token_type'    =>  'Bearer',
+            'expires_in'    =>  $this->getParam('expires_in'),
+        ];
+
+        if (!is_null($this->getParam('refresh_token'))) {
+            $return['refresh_token'] = $this->getParam('refresh_token');
+        }
+
+        return $return;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function determineAccessTokenInHeader(Request $request)
+    {
+        if ($request->headers->has('Authorization') === false) {
+            return;
+        }
+
+        $header = $request->headers->get('Authorization');
+
+        if (substr($header, 0, 7) !== 'Bearer ') {
+            return;
+        }
+
+        return trim(substr($header, 7));
+    }
+}

src/TokenType/MAC.php

@@ -0,0 +1,156 @@
+<?php
+/**
+ * OAuth 2.0 MAC Token Type
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\TokenType;
+
+use League\OAuth2\Server\Util\SecureKey;
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * MAC Token Type
+ */
+class MAC extends AbstractTokenType implements TokenTypeInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function generateResponse()
+    {
+        $macKey = SecureKey::generate();
+        $this->server->getMacStorage()->create($macKey, $this->getParam('access_token'));
+
+        $response = [
+            'access_token'  =>  $this->getParam('access_token'),
+            'token_type'    =>  'mac',
+            'expires_in'    =>  $this->getParam('expires_in'),
+            'mac_key'       =>  $macKey,
+            'mac_algorithm' =>  'hmac-sha-256',
+        ];
+
+        if (!is_null($this->getParam('refresh_token'))) {
+            $response['refresh_token'] = $this->getParam('refresh_token');
+        }
+
+        return $response;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function determineAccessTokenInHeader(Request $request)
+    {
+        if ($request->headers->has('Authorization') === false) {
+            return;
+        }
+
+        $header = $request->headers->get('Authorization');
+
+        if (substr($header, 0, 4) !== 'MAC ') {
+            return;
+        }
+
+        // Find all the parameters expressed in the header
+        $paramsRaw = explode(',', substr($header, 4));
+        $params = new ParameterBag();
+
+        array_map(function ($param) use (&$params) {
+            $param = trim($param);
+
+            preg_match_all('/([a-zA-Z]*)="([\w=\/+]*)"/', $param, $matches);
+
+            // @codeCoverageIgnoreStart
+            if (count($matches) !== 3) {
+                return;
+            }
+            // @codeCoverageIgnoreEnd
+
+            $key = reset($matches[1]);
+            $value = trim(reset($matches[2]));
+
+            if (empty($value)) {
+                return;
+            }
+
+            $params->set($key, $value);
+        }, $paramsRaw);
+
+        // Validate parameters
+        if ($params->has('id') === false || $params->has('ts') === false || $params->has('nonce') === false || $params->has('mac') === false) {
+            return;
+        }
+
+        if (abs($params->get('ts') - time()) > 300) {
+            return;
+        }
+
+        $accessToken = $params->get('id');
+        $timestamp = (int) $params->get('ts');
+        $nonce = $params->get('nonce');
+        $signature = $params->get('mac');
+
+        // Try to find the MAC key for the access token
+        $macKey = $this->server->getMacStorage()->getByAccessToken($accessToken);
+
+        if ($macKey === null) {
+            return;
+        }
+
+        // Calculate and compare the signature
+        $calculatedSignatureParts = [
+            $timestamp,
+            $nonce,
+            strtoupper($request->getMethod()),
+            $request->getRequestUri(),
+            $request->getHost(),
+            $request->getPort(),
+        ];
+
+        if ($params->has('ext')) {
+            $calculatedSignatureParts[] = $params->get('ext');
+        }
+
+        $calculatedSignature = base64_encode(
+            hash_hmac(
+                'sha256',
+                implode("\n", $calculatedSignatureParts),
+                $macKey,
+                true  // raw_output: outputs raw binary data
+            )
+        );
+
+        // Return the access token if the signature matches
+        return ($this->hash_equals($calculatedSignature, $signature)) ? $accessToken : null;
+    }
+
+    /**
+     * Prevent timing attack
+     * @param  string $knownString
+     * @param  string $userString
+     * @return bool
+     */
+    private function hash_equals($knownString, $userString)
+    {
+        if (function_exists('\hash_equals')) {
+            return \hash_equals($knownString, $userString);
+        }
+        if (strlen($knownString) !== strlen($userString)) {
+            return false;
+        }
+        $len = strlen($knownString);
+        $result = 0;
+        for ($i = 0; $i < $len; $i++) {
+            $result |= (ord($knownString[$i]) ^ ord($userString[$i]));
+        }
+        // They are only identical strings if $result is exactly 0...
+        return 0 === $result;
+    }
+}

src/TokenType/TokenTypeInterface.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * OAuth 2.0 Token Type Interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\TokenType;
+
+use League\OAuth2\Server\AbstractServer;
+use League\OAuth2\Server\Entity\SessionEntity;
+use Symfony\Component\HttpFoundation\Request;
+
+interface TokenTypeInterface
+{
+    /**
+     * Generate a response
+     *
+     * @return array
+     */
+    public function generateResponse();
+
+    /**
+     * Set the server
+     *
+     * @param \League\OAuth2\Server\AbstractServer $server
+     *
+     * @return self
+     */
+    public function setServer(AbstractServer $server);
+
+    /**
+     * Set a key/value response pair
+     *
+     * @param string $key
+     * @param mixed  $value
+     */
+    public function setParam($key, $value);
+
+    /**
+     * Get a key from the response array
+     *
+     * @param string $key
+     *
+     * @return mixed
+     */
+    public function getParam($key);
+
+    /**
+     * @param \League\OAuth2\Server\Entity\SessionEntity $session
+     *
+     * @return self
+     */
+    public function setSession(SessionEntity $session);
+
+    /**
+     * Determine the access token in the authorization header
+     *
+     * @param \Symfony\Component\HttpFoundation\Request $request
+     *
+     * @return string
+     */
+    public function determineAccessTokenInHeader(Request $request);
+}

src/Util/KeyAlgorithm/DefaultAlgorithm.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Secure key interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Util\KeyAlgorithm;
+
+class DefaultAlgorithm implements KeyAlgorithmInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function generate($len = 40)
+    {
+        $stripped = '';
+        do {
+            $bytes = openssl_random_pseudo_bytes($len, $strong);
+
+            // We want to stop execution if the key fails because, well, that is bad.
+            if ($bytes === false || $strong === false) {
+                // @codeCoverageIgnoreStart
+                throw new \Exception('Error Generating Key');
+                // @codeCoverageIgnoreEnd
+            }
+            $stripped .= str_replace(['/', '+', '='], '', base64_encode($bytes));
+        } while (strlen($stripped) < $len);
+
+        return substr($stripped, 0, $len);
+    }
+}

src/Util/KeyAlgorithm/KeyAlgorithmInterface.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * OAuth 2.0 Secure key interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Util\KeyAlgorithm;
+
+interface KeyAlgorithmInterface
+{
+    /**
+     * Generate a new unique code
+     *
+     * @param integer $len Length of the generated code
+     *
+     * @return string
+     */
+    public function generate($len);
+}

src/Util/RedirectUri.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * OAuth 2.0 Redirect URI generator
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Util;
+
+/**
+ * RedirectUri class
+ */
+class RedirectUri
+{
+    /**
+     * Generate a new redirect uri
+     *
+     * @param string $uri            The base URI
+     * @param array  $params         The query string parameters
+     * @param string $queryDelimeter The query string delimeter (default: "?")
+     *
+     * @return string The updated URI
+     */
+    public static function make($uri, $params = [], $queryDelimeter = '?')
+    {
+        $uri .= (strstr($uri, $queryDelimeter) === false) ? $queryDelimeter : '&';
+
+        return $uri.http_build_query($params);
+    }
+}

src/Util/SecureKey.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * OAuth 2.0 Secure key generator
+ *
+ * @package     php-loep/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) 2013 PHP League of Extraordinary Packages
+ * @license     http://mit-license.org/
+ * @link        http://github.com/php-loep/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Util;
+
+use League\OAuth2\Server\Util\KeyAlgorithm\DefaultAlgorithm;
+use League\OAuth2\Server\Util\KeyAlgorithm\KeyAlgorithmInterface;
+
+/**
+ * SecureKey class
+ */
+class SecureKey
+{
+    protected static $algorithm;
+
+    /**
+     * Generate a new unique code
+     *
+     * @param integer $len Length of the generated code
+     *
+     * @return string
+     */
+    public static function generate($len = 40)
+    {
+        return self::getAlgorithm()->generate($len);
+    }
+
+    /**
+     * @param KeyAlgorithmInterface $algorithm
+     */
+    public static function setAlgorithm(KeyAlgorithmInterface $algorithm)
+    {
+        self::$algorithm = $algorithm;
+    }
+
+    /**
+     * @return KeyAlgorithmInterface
+     */
+    public static function getAlgorithm()
+    {
+        if (is_null(self::$algorithm)) {
+            self::$algorithm = new DefaultAlgorithm();
+        }
+
+        return self::$algorithm;
+    }
+}