ci: use mirror for image fetches

cmd: add check parameter

.drone.jsonnet

@@ -1,5 +1,5 @@
 // yaml_stream.jsonnet
-local Build(go, alpine, os, arch) = {
+local Build(mirror, go, alpine, os, arch) = {
     kind: "pipeline",
     type: "docker",
     name: "build-" + go + "-alpine" + alpine + "-" + arch,
@@ -17,17 +17,37 @@ local Build(go, alpine, os, arch) = {
         {
             name: "build",
             image: "golang:" + go +"-alpine" + alpine,
+            mirror: mirror,
             commands: [
                 "apk update",
                 "apk add --no-cache git",
                 "mkdir .bin",
-                "go build -v -o ./.bin/go-away ./cmd/go-away",
+                "go build -v -pgo=auto -v -trimpath -ldflags=-buildid= -o ./.bin/go-away ./cmd/go-away",
                 "go build -v -o ./.bin/test-wasm-runtime ./cmd/test-wasm-runtime",
             ],
         },
+        {
+            name: "check-policy-forgejo",
+            image: "alpine:" + alpine,
+            mirror: mirror,
+            depends_on: ["build"],
+            commands: [
+                "./.bin/go-away --check --slog-level DEBUG --backend example.com=http://127.0.0.1:80 --policy examples/forgejo.yml --policy-snippets examples/snippets/"
+            ],
+        },
+        {
+            name: "check-policy-generic",
+            image: "alpine:" + alpine,
+            mirror: mirror,
+            depends_on: ["build"],
+            commands: [
+                "./.bin/go-away --check --slog-level DEBUG --backend example.com=http://127.0.0.1:80 --policy examples/generic.yml --policy-snippets examples/snippets/"
+            ],
+        },
         {
             name: "test-wasm-success",
             image: "alpine:" + alpine,
+            mirror: mirror,
             depends_on: ["build"],
             commands: [
                 "./.bin/test-wasm-runtime -wasm ./embed/challenge/js-pow-sha256/runtime/runtime.wasm " +
@@ -40,6 +60,7 @@ local Build(go, alpine, os, arch) = {
         {
             name: "test-wasm-fail",
             image: "alpine:" + alpine,
+            mirror: mirror,
             depends_on: ["build"],
             commands: [
                 "./.bin/test-wasm-runtime -wasm ./embed/challenge/js-pow-sha256/runtime/runtime.wasm " +
@@ -52,7 +73,7 @@ local Build(go, alpine, os, arch) = {
     ]
 };
 
-local Publish(registry, repo, secret, go, alpine, os, arch, trigger, platforms, extra) = {
+local Publish(mirror, registry, repo, secret, go, alpine, os, arch, trigger, platforms, extra) = {
     kind: "pipeline",
     type: "docker",
     name: "publish-" + go + "-alpine" + alpine + "-" + secret,
@@ -62,6 +83,15 @@ local Publish(registry, repo, secret, go, alpine, os, arch, trigger, platforms,
     },
     trigger: trigger,
     steps: [
+        {
+            name: "setup-buildkitd",
+            image: "alpine:" + alpine,
+            mirror: mirror,
+            commands: [
+                "echo '[registry.\"docker.io\"]' > buildkitd.toml",
+                "echo '  mirrors = [\"mirror.gcr.io\"]' >> buildkitd.toml"
+            ],
+        },
         {
             name: "docker",
             image: "plugins/buildx",
@@ -71,13 +101,15 @@ local Publish(registry, repo, secret, go, alpine, os, arch, trigger, platforms,
                 SOURCE_DATE_EPOCH: 0,
                 TZ: "UTC",
                 LC_ALL: "C",
+                PLUGIN_BUILDER_CONFIG: "buildkitd.toml",
+                PLUGIN_BUILDER_DRIVER: "docker-container",
             },
             settings: {
                   registry: registry,
                   repo: repo,
+                  mirror: mirror,
                   compress: true,
                   platform: platforms,
-                  builder_driver: "docker-container",
                   build_args: {
                     from_builder: "golang:" + go +"-alpine" + alpine,
                     from: "alpine:" + alpine,
@@ -100,17 +132,19 @@ local containerArchitectures = ["linux/amd64", "linux/arm64", "linux/riscv64"];
 local alpineVersion = "3.21";
 local goVersion = "1.24";
 
+local mirror = "https://mirror.gcr.io";
+
 [
-    Build(goVersion, alpineVersion, "linux", "amd64"),
+    Build(mirror, goVersion, alpineVersion, "linux", "amd64"),
-    Build(goVersion, alpineVersion, "linux", "arm64"),
+    Build(mirror, goVersion, alpineVersion, "linux", "arm64"),
 
     # latest
-    Publish("git.gammaspectra.live", "git.gammaspectra.live/git/go-away", "git", goVersion, alpineVersion, "linux", "amd64", {event: ["push"], branch: ["master"], }, containerArchitectures, {tags: ["latest"],}) + {name: "publish-latest-git"},
+    Publish(mirror, "git.gammaspectra.live", "git.gammaspectra.live/git/go-away", "git", goVersion, alpineVersion, "linux", "amd64", {event: ["push"], branch: ["master"], }, containerArchitectures, {tags: ["latest"],}) + {name: "publish-latest-git"},
-    Publish("codeberg.org", "codeberg.org/weebdatahoarder/go-away", "codeberg", goVersion, alpineVersion, "linux", "amd64", {event: ["push"], branch: ["master"], }, containerArchitectures, {tags: ["latest"],}) + {name: "publish-latest-codeberg"},
+    Publish(mirror, "codeberg.org", "codeberg.org/weebdatahoarder/go-away", "codeberg", goVersion, alpineVersion, "linux", "amd64", {event: ["push"], branch: ["master"], }, containerArchitectures, {tags: ["latest"],}) + {name: "publish-latest-codeberg"},
-    Publish("ghcr.io", "ghcr.io/weebdatahoarder/go-away", "github", goVersion, alpineVersion, "linux", "amd64", {event: ["push"], branch: ["master"], }, containerArchitectures, {tags: ["latest"],}) + {name: "publish-latest-github"},
+    Publish(mirror, "ghcr.io", "ghcr.io/weebdatahoarder/go-away", "github", goVersion, alpineVersion, "linux", "amd64", {event: ["push"], branch: ["master"], }, containerArchitectures, {tags: ["latest"],}) + {name: "publish-latest-github"},
 
     # modern
-    Publish("git.gammaspectra.live", "git.gammaspectra.live/git/go-away", "git", goVersion, alpineVersion, "linux", "amd64", {event: ["promote", "tag"], target: ["production"], }, containerArchitectures, {auto_tag: true,}),
+    Publish(mirror, "git.gammaspectra.live", "git.gammaspectra.live/git/go-away", "git", goVersion, alpineVersion, "linux", "amd64", {event: ["promote", "tag"], target: ["production"], }, containerArchitectures, {auto_tag: true,}),
-    Publish("codeberg.org", "codeberg.org/weebdatahoarder/go-away", "codeberg", goVersion, alpineVersion, "linux", "amd64", {event: ["promote", "tag"], target: ["production"], }, containerArchitectures, {auto_tag: true,}),
+    Publish(mirror, "codeberg.org", "codeberg.org/weebdatahoarder/go-away", "codeberg", goVersion, alpineVersion, "linux", "amd64", {event: ["promote", "tag"], target: ["production"], }, containerArchitectures, {auto_tag: true,}),
-    Publish("ghcr.io", "ghcr.io/weebdatahoarder/go-away", "github", goVersion, alpineVersion, "linux", "amd64", {event: ["promote", "tag"], target: ["production"], }, containerArchitectures, {auto_tag: true,}),
+    Publish(mirror, "ghcr.io", "ghcr.io/weebdatahoarder/go-away", "github", goVersion, alpineVersion, "linux", "amd64", {event: ["promote", "tag"], target: ["production"], }, containerArchitectures, {auto_tag: true,}),
 ]

.drone.yml

@@ -14,10 +14,27 @@ steps:
   - apk update
   - apk add --no-cache git
   - mkdir .bin
-  - go build -v -o ./.bin/go-away ./cmd/go-away
+  - go build -v -pgo=auto -v -trimpath -ldflags=-buildid= -o ./.bin/go-away ./cmd/go-away
   - go build -v -o ./.bin/test-wasm-runtime ./cmd/test-wasm-runtime
   image: golang:1.24-alpine3.21
+  mirror: https://mirror.gcr.io
   name: build
+- commands:
+  - ./.bin/go-away --check --slog-level DEBUG --backend example.com=http://127.0.0.1:80
+    --policy examples/forgejo.yml --policy-snippets examples/snippets/
+  depends_on:
+  - build
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: check-policy-forgejo
+- commands:
+  - ./.bin/go-away --check --slog-level DEBUG --backend example.com=http://127.0.0.1:80
+    --policy examples/generic.yml --policy-snippets examples/snippets/
+  depends_on:
+  - build
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: check-policy-generic
 - commands:
   - ./.bin/test-wasm-runtime -wasm ./embed/challenge/js-pow-sha256/runtime/runtime.wasm
     -make-challenge ./embed/challenge/js-pow-sha256/test/make-challenge.json -make-challenge-out
@@ -27,6 +44,7 @@ steps:
   depends_on:
   - build
   image: alpine:3.21
+  mirror: https://mirror.gcr.io
   name: test-wasm-success
 - commands:
   - ./.bin/test-wasm-runtime -wasm ./embed/challenge/js-pow-sha256/runtime/runtime.wasm
@@ -37,6 +55,7 @@ steps:
   depends_on:
   - build
   image: alpine:3.21
+  mirror: https://mirror.gcr.io
   name: test-wasm-fail
 type: docker
 ---
@@ -55,10 +74,27 @@ steps:
   - apk update
   - apk add --no-cache git
   - mkdir .bin
-  - go build -v -o ./.bin/go-away ./cmd/go-away
+  - go build -v -pgo=auto -v -trimpath -ldflags=-buildid= -o ./.bin/go-away ./cmd/go-away
   - go build -v -o ./.bin/test-wasm-runtime ./cmd/test-wasm-runtime
   image: golang:1.24-alpine3.21
+  mirror: https://mirror.gcr.io
   name: build
+- commands:
+  - ./.bin/go-away --check --slog-level DEBUG --backend example.com=http://127.0.0.1:80
+    --policy examples/forgejo.yml --policy-snippets examples/snippets/
+  depends_on:
+  - build
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: check-policy-forgejo
+- commands:
+  - ./.bin/go-away --check --slog-level DEBUG --backend example.com=http://127.0.0.1:80
+    --policy examples/generic.yml --policy-snippets examples/snippets/
+  depends_on:
+  - build
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: check-policy-generic
 - commands:
   - ./.bin/test-wasm-runtime -wasm ./embed/challenge/js-pow-sha256/runtime/runtime.wasm
     -make-challenge ./embed/challenge/js-pow-sha256/test/make-challenge.json -make-challenge-out
@@ -68,6 +104,7 @@ steps:
   depends_on:
   - build
   image: alpine:3.21
+  mirror: https://mirror.gcr.io
   name: test-wasm-success
 - commands:
   - ./.bin/test-wasm-runtime -wasm ./embed/challenge/js-pow-sha256/runtime/runtime.wasm
@@ -78,6 +115,7 @@ steps:
   depends_on:
   - build
   image: alpine:3.21
+  mirror: https://mirror.gcr.io
   name: test-wasm-fail
 type: docker
 ---
@@ -87,9 +125,17 @@ platform:
   arch: amd64
   os: linux
 steps:
+- commands:
+  - echo '[registry."docker.io"]' > buildkitd.toml
+  - echo '  mirrors = ["mirror.gcr.io"]' >> buildkitd.toml
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: setup-buildkitd
 - environment:
     DOCKER_BUILDKIT: "1"
     LC_ALL: C
+    PLUGIN_BUILDER_CONFIG: buildkitd.toml
+    PLUGIN_BUILDER_DRIVER: docker-container
     SOURCE_DATE_EPOCH: 0
     TZ: UTC
   image: plugins/buildx
@@ -100,8 +146,8 @@ steps:
     build_args:
       from: alpine:3.21
       from_builder: golang:1.24-alpine3.21
-    builder_driver: docker-container
     compress: true
+    mirror: https://mirror.gcr.io
     password:
       from_secret: git_password
     platform:
@@ -127,9 +173,17 @@ platform:
   arch: amd64
   os: linux
 steps:
+- commands:
+  - echo '[registry."docker.io"]' > buildkitd.toml
+  - echo '  mirrors = ["mirror.gcr.io"]' >> buildkitd.toml
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: setup-buildkitd
 - environment:
     DOCKER_BUILDKIT: "1"
     LC_ALL: C
+    PLUGIN_BUILDER_CONFIG: buildkitd.toml
+    PLUGIN_BUILDER_DRIVER: docker-container
     SOURCE_DATE_EPOCH: 0
     TZ: UTC
   image: plugins/buildx
@@ -140,8 +194,8 @@ steps:
     build_args:
       from: alpine:3.21
       from_builder: golang:1.24-alpine3.21
-    builder_driver: docker-container
     compress: true
+    mirror: https://mirror.gcr.io
     password:
       from_secret: codeberg_password
     platform:
@@ -167,9 +221,17 @@ platform:
   arch: amd64
   os: linux
 steps:
+- commands:
+  - echo '[registry."docker.io"]' > buildkitd.toml
+  - echo '  mirrors = ["mirror.gcr.io"]' >> buildkitd.toml
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: setup-buildkitd
 - environment:
     DOCKER_BUILDKIT: "1"
     LC_ALL: C
+    PLUGIN_BUILDER_CONFIG: buildkitd.toml
+    PLUGIN_BUILDER_DRIVER: docker-container
     SOURCE_DATE_EPOCH: 0
     TZ: UTC
   image: plugins/buildx
@@ -180,8 +242,8 @@ steps:
     build_args:
       from: alpine:3.21
       from_builder: golang:1.24-alpine3.21
-    builder_driver: docker-container
     compress: true
+    mirror: https://mirror.gcr.io
     password:
       from_secret: github_password
     platform:
@@ -207,9 +269,17 @@ platform:
   arch: amd64
   os: linux
 steps:
+- commands:
+  - echo '[registry."docker.io"]' > buildkitd.toml
+  - echo '  mirrors = ["mirror.gcr.io"]' >> buildkitd.toml
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: setup-buildkitd
 - environment:
     DOCKER_BUILDKIT: "1"
     LC_ALL: C
+    PLUGIN_BUILDER_CONFIG: buildkitd.toml
+    PLUGIN_BUILDER_DRIVER: docker-container
     SOURCE_DATE_EPOCH: 0
     TZ: UTC
   image: plugins/buildx
@@ -221,8 +291,8 @@ steps:
     build_args:
       from: alpine:3.21
       from_builder: golang:1.24-alpine3.21
-    builder_driver: docker-container
     compress: true
+    mirror: https://mirror.gcr.io
     password:
       from_secret: git_password
     platform:
@@ -247,9 +317,17 @@ platform:
   arch: amd64
   os: linux
 steps:
+- commands:
+  - echo '[registry."docker.io"]' > buildkitd.toml
+  - echo '  mirrors = ["mirror.gcr.io"]' >> buildkitd.toml
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: setup-buildkitd
 - environment:
     DOCKER_BUILDKIT: "1"
     LC_ALL: C
+    PLUGIN_BUILDER_CONFIG: buildkitd.toml
+    PLUGIN_BUILDER_DRIVER: docker-container
     SOURCE_DATE_EPOCH: 0
     TZ: UTC
   image: plugins/buildx
@@ -261,8 +339,8 @@ steps:
     build_args:
       from: alpine:3.21
       from_builder: golang:1.24-alpine3.21
-    builder_driver: docker-container
     compress: true
+    mirror: https://mirror.gcr.io
     password:
       from_secret: codeberg_password
     platform:
@@ -287,9 +365,17 @@ platform:
   arch: amd64
   os: linux
 steps:
+- commands:
+  - echo '[registry."docker.io"]' > buildkitd.toml
+  - echo '  mirrors = ["mirror.gcr.io"]' >> buildkitd.toml
+  image: alpine:3.21
+  mirror: https://mirror.gcr.io
+  name: setup-buildkitd
 - environment:
     DOCKER_BUILDKIT: "1"
     LC_ALL: C
+    PLUGIN_BUILDER_CONFIG: buildkitd.toml
+    PLUGIN_BUILDER_DRIVER: docker-container
     SOURCE_DATE_EPOCH: 0
     TZ: UTC
   image: plugins/buildx
@@ -301,8 +387,8 @@ steps:
     build_args:
       from: alpine:3.21
       from_builder: golang:1.24-alpine3.21
-    builder_driver: docker-container
     compress: true
+    mirror: https://mirror.gcr.io
     password:
       from_secret: github_password
     platform:
@@ -322,6 +408,6 @@ trigger:
 type: docker
 ---
 kind: signature
-hmac: f27dd6fbc73d3dd6e26739576a02b6bf0f9d1c43ee9d6d1439afacdf4e4dbf96
+hmac: ad13c88b81cd1c6ebd4bb8d33479ffe8e67bc8caefdcc1c06dd1a6b75476bcd7
 
 ...

CHALLENGES.md

@@ -13,14 +13,15 @@ For example, this allows verifying the user cookies against the backend to have
 Example on Forgejo, checks that current user is authenticated:
 ```yaml
   http-cookie-check:
-    mode: http
+    runtime: http
-    url: http://forgejo:3000/user/stopwatches
-    # url: http://forgejo:3000/repo/search
-    # url: http://forgejo:3000/notifications/new
     parameters:
+      http-url: http://forgejo:3000/user/stopwatches
+      # http-url: http://forgejo:3000/repo/search
+      # http-url: http://forgejo:3000/notifications/new
       http-method: GET
       http-cookie: i_like_gitea
       http-code: 200
+      verify-probability: 0.1
 ```
 
 ### preload-link
@@ -33,18 +34,45 @@ The server waits until solved or defined timeout, then continues on other challe
 
 Example:
 ```yaml
-  self-preload-link:
+  preload-link:
     condition: '"Sec-Fetch-Mode" in headers && headers["Sec-Fetch-Mode"] == "navigate"'
-    mode: "preload-link"
+    runtime: "preload-link"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
     parameters:
       preload-early-hint-deadline: 3s
-      key-code: 200
+```
-      key-mime: text/css
+
-      key-content: ""
+### dnsbl
+
+You can configure a [DNSBL (Domain Name System blocklist)](https://en.wikipedia.org/wiki/Domain_Name_System_blocklist) to be queried.
+
+This allows you to serve harder or different challenges to higher risk clients, or block them from specific sections.
+
+Only rules that match a DNSBL challenge will cause a query to be sent, meaning the bulk of requests will not be sent to this service upstream.
+
+Results will be temporarily cached.
+
+By default, [DroneBL](https://dronebl.org/) is used.
+
+Example challenge definition and rule:
+```yaml
+challenges:
+  dnsbl:
+  runtime: dnsbl
+  parameters:
+    # dnsbl-host: "dnsbl.dronebl.org"
+    dnsbl-decay: 1h
+    dnsbl-timeout: 1s
+    
+rules:
+  # check DNSBL and serve harder challenges
+  - name: undesired-dnsbl
+    action: check
+    settings:
+      challenges: [dnsbl]
+      # if DNSBL fails, check additional challenges
+      fail: check
+      fail-settings:
+        challenges: [js-pow-sha256]
 ```
 
 ## Non-JavaScript
@@ -76,20 +104,6 @@ Requires HTTP and HTML response parsing and logic, displays challenge site.
 
 Servers a challenge page with a linked resource that is loaded by the browser, which solves the challenge. Page refreshes a few seconds later via [Refresh](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Refresh).
 
-Example:
-```yaml
-  self-resource-load:
-    mode: "resource-load"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-    parameters:
-      key-code: 200
-      key-mime: text/css
-      key-content: ""
-```
-
 ## Custom JavaScript
 
 ### js-pow-sha256
@@ -101,18 +115,18 @@ Has the user solve a Proof of Work using SHA256 hashes, with configurable diffic
 Example:
 ```yaml
   js-pow-sha256:
-    # Asset must be under challenges/{name}/static/{asset}
+    runtime: js
-    # Other files here will be available under that path
-    mode: js
-    asset: load.mjs
     parameters:
-      # difficulty is number of bits that must be set to 0 from start
+      # specifies the folder path that assets are under
-      # Anubis challenge difficulty 5 becomes 5 * 8 = 20
+      # can be either embedded or external path
-      difficulty: 20
+      # defaults to name of challenge
-    runtime:
+      path: "js-pow-sha256"
-      mode: wasm
+      # needs to be under static folder
-      # Verify must be under challenges/{name}/runtime/{asset}
+      js-loader: load.mjs
-      asset: runtime.wasm
+      # needs to be under runtime folder
-      probability: 0.02
+      wasm-runtime: runtime.wasm
+      wasm-runtime-settings:
+        difficulty: 20
+      verify-probability: 0.02
 ```
 

Dockerfile

@@ -1,5 +1,5 @@
-ARG from_builder=golang:1.24-alpine3.21
+ARG from_builder=docker.io/golang:1.24-alpine3.21
-ARG from=alpine:3.21
+ARG from=docker.io/alpine:3.21
 
 ARG BUILDPLATFORM
 
@@ -39,6 +39,7 @@ ENV GOAWAY_BIND=":8080"
 ENV GOAWAY_BIND_NETWORK="tcp"
 ENV GOAWAY_SOCKET_MODE="0770"
 ENV GOAWAY_POLICY="/policy.yml"
+ENV GOAWAY_POLICY_SNIPPETS="/policy/snippets"
 ENV GOAWAY_CHALLENGE_TEMPLATE="anubis"
 ENV GOAWAY_CHALLENGE_TEMPLATE_THEME=""
 ENV GOAWAY_SLOG_LEVEL="WARN"
@@ -46,7 +47,6 @@ ENV GOAWAY_CLIENT_IP_HEADER=""
 ENV GOAWAY_BACKEND_IP_HEADER=""
 ENV GOAWAY_JWT_PRIVATE_KEY_SEED=""
 ENV GOAWAY_BACKEND=""
-ENV GOAWAY_DNSBL="dnsbl.dronebl.org"
 ENV GOAWAY_ACME_AUTOCERT=""
 ENV GOAWAY_CACHE="/cache"
 
@@ -56,9 +56,9 @@ EXPOSE 8080/udp
 ENV JWT_PRIVATE_KEY_SEED="${GOAWAY_JWT_PRIVATE_KEY_SEED}"
 
 ENTRYPOINT  /bin/go-away --bind "${GOAWAY_BIND}" --bind-network "${GOAWAY_BIND_NETWORK}" --socket-mode "${GOAWAY_SOCKET_MODE}" \
-            --policy ${GOAWAY_POLICY} --client-ip-header "${GOAWAY_CLIENT_IP_HEADER}" --backend-ip-header "${GOAWAY_BACKEND_IP_HEADER}" \
+            --policy "${GOAWAY_POLICY}" --policy-snippets "${GOAWAY_POLICY_SNIPPETS}" \
+            --client-ip-header "${GOAWAY_CLIENT_IP_HEADER}" --backend-ip-header "${GOAWAY_BACKEND_IP_HEADER}" \
             --cache "${GOAWAY_CACHE}" \
-            --dnsbl "${GOAWAY_DNSBL}" \
             --challenge-template "${GOAWAY_CHALLENGE_TEMPLATE}" --challenge-template-theme "${GOAWAY_CHALLENGE_TEMPLATE_THEME}" \
             --slog-level "${GOAWAY_SLOG_LEVEL}" \
             --acme-autocert "${GOAWAY_ACME_AUTOCERT}" \

README.md

@@ -26,7 +26,19 @@ If you have some suggestion or issue, feel free to open a [New Issue](https://gi
 
 For real-time chat and other support join IRC on [#go-away](ircs://irc.libera.chat/#go-away) on Libera.Chat [[WebIRC]](https://web.libera.chat/?nick=Guest?#go-away). The channel may not be monitored at all times, feel free to ping the operators there.
 
-A source code mirror exists on [sourcehut](https://git.sr.ht/~datahoarder/go-away), [Codeberg.org](https://codeberg.org/WeebDataHoarder/go-away), and [GitHub](https://github.com/WeebDataHoarder/go-away).
+## Code Mirrors
+
+Source code is automatically pushed to the following mirrors. Packages are also mirrored on Codeberg and GitHub.
+
+[![GammaSpectra.live](https://img.shields.io/badge/GammaSpectra.live-main+packages-green?style=flat&logo=data:image/svg+xml;base64,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&labelColor=fff)](https://git.gammaspectra.live/git/go-away) ![](https://git.gammaspectra.live/git/go-away/badges/stars.svg?style=flat) [![](https://git.gammaspectra.live/git/go-away/badges/issues/open.svg?style=flat)](https://git.gammaspectra.live/git/go-away/issues?state=open) [![](https://git.gammaspectra.live/git/go-away/badges/pulls/open.svg?style=flat)](https://git.gammaspectra.live/git/go-away/pulls?state=open)
+
+[![Codeberg](https://img.shields.io/badge/Codeberg-mirror+packages-2185D0?style=flat&logo=codeberg&labelColor=fff)](https://codeberg.org/WeebDataHoarder/go-away) ![](https://codeberg.org/WeebDataHoarder/go-away/badges/stars.svg?style=flat)
+
+[![GitHub](https://img.shields.io/badge/GitHub-mirror+packages-blue?style=flat&logo=github&labelColor=fff&logoColor=24292f)](https://github.com/WeebDataHoarder/go-away) ![](https://img.shields.io/github/stars/WeebDataHoarder/go-away?style=flat)
+
+[![sourcehut](https://img.shields.io/badge/sourcehut-mirror-blue?style=flat&logo=sourcehut&labelColor=fff&logoColor=000)](https://git.sr.ht/~datahoarder/go-away)
+
+Note that issues or pull requests should be issued on the [main Forge](https://git.gammaspectra.live/git/go-away).
 
 ## Features
 
@@ -42,26 +54,19 @@ Rules and conditions are served with this environment:
 
 ```
 remoteAddress (net.IP) - Connecting client remote address from headers or properties
+  remoteAddress.network(networkName string) bool - Check whether a given IP is listed on the underlying defined network
+  remoteAddress.network(networkCIDR string) bool - Check whether a given IP is listed on the CIDR
 host (string) - HTTP Host
 method (string) - HTTP Method/Verb
 userAgent (string) - HTTP User-Agent header
 path (string) - HTTP request Path
 query (map[string]string) - HTTP request Query arguments
 headers (map[string]string) - HTTP request headers
-   
+fp (map[string]string) - Available fingerprints
+  
 Only available when TLS is enabled
-   fpJA3N (string) JA3N TLS Fingerprint
+   fp.ja3n (string) JA3N TLS Fingerprint
-   fpJA4 (string) JA4 TLS Fingerprint
+   fp.ja4 (string) JA4 TLS Fingerprint
-```
-
-Additionally, these functions are available:
-```
-Check whether a given IP is listed on the underlying defined network or CIDR
-    inNetwork(networkName string, address net.IP) bool
-    inNetwork(networkCIDR string, address net.IP) bool
-
-Check whether a given IP is listed on the provided DNSBL
-    inDNSBL(address net.IP) bool
 ```
 
 ### Template support
@@ -77,14 +82,23 @@ External templates for your site can be loaded specifying a full path to the `.g
 
 ### Extended rule actions
 
-In addition to the common PASS / CHALLENGE / DENY rules, we offer CHECK and POISON.
+In addition to the common PASS / CHALLENGE / DENY rules, go-away offers more actions that can be extended via code.
+
+|  Action   | Behavior                                                                | Terminating |
+|:---------:|:------------------------------------------------------------------------|:-----------:|
+|   PASS    | Passes the request to the backend immediately                           |     Yes     |
+|   DENY    | Denies the request with a descriptive page                              |     Yes     |
+|   BLOCK   | Denies the request with a response code                                 |     Yes     |
+|   DROP    | Drops the connection without sending a reply                            |     Yes     |
+| CHALLENGE | Issues a challenge that when passed, acts like PASS                     |     Yes     |
+|   CHECK   | Issues a challenge that when passed, continues executing rules          |     No      |
+|   PROXY   | Proxies request to a different backend, with optional path replacements |     Yes     |
+
 
 CHECK allows the client to be challenged but continue matching rules after these, for example, chaining a list of challenges that must be passed. 
 For example, you could use this to implement browser in checks without explicitly allowing all requests, and later deferring to a secondary check/challenge.
 
-POISON sends defined responses to bad clients that will annoy them.
+PROXY allows the operator to send matching requests to a different backend, for example, a poison generator or a scraping maze.
-This must be configured by the operator, some networks have been seen to only stop when served back this output.
-Currently, an HTML payload exists that uncompressed to about one GiB of nonsense DOM. You could use this to send garbage for would-be training data.
 
 ### Multiple challenge matching
 
@@ -94,16 +108,17 @@ For example:
 ```yaml
   - name: standard-browser
     action: challenge
-    challenges: [http-cookie-check, self-preload-link, self-meta-refresh, self-resource-load, js-pow-sha256]
+    settings:
+      challenges: [http-cookie-check, preload-link, meta-refresh, resource-load, js-pow-sha256]
     conditions:
       - '($is-generic-browser)'
 ```
 
 This rule has the user be checked against a backend, then attempts pass a few browser challenges.
 
-In this case the processing would stop at `self-meta-refresh` due to the behavior of earlier challenges (cookie check and preload link allow failing / continue due to being silent, while meta-refresh requires displaying a challenge page).
+In this case the processing would stop at `meta-refresh` due to the behavior of earlier challenges (cookie check and preload link allow failing / continue due to being silent, while meta-refresh requires displaying a challenge page).
 
-Any of these listed challenges being passed in the past will allow the client through, including non-offered `self-resource-load` and `js-pow-sha256`.
+Any of these listed challenges being passed in the past will allow the client through, including non-offered `resource-load` and `js-pow-sha256`.
 
 ### Non-Javascript challenges
 
@@ -144,19 +159,6 @@ This can be targeted on conditions or other application logic.
 
 Read more about [JA3](https://medium.com/salesforce-engineering/tls-fingerprinting-with-ja3-and-ja3s-247362855967) and [JA4](https://github.com/FoxIO-LLC/ja4/blob/main/technical_details/README.md).
 
-
-### DNSBL
-
-You can configure a [DNSBL (Domain Name System blocklist)](https://en.wikipedia.org/wiki/Domain_Name_System_blocklist) to be queried on rules and conditions.
-
-This allows you to serve harder or different challenges to higher risk clients, or block them from specific sections.
-
-Only rules that match DNSBL will cause a query to be sent, meaning the bulk of requests will not be sent to this service upstream.
-
-Results will be temporarily cached
-
-By default, [DroneBL](https://dronebl.org/) is used.
-
 ### Network range and automated filtering
 
 Some specific search spiders do follow _robots.txt_ and are well behaved. However, many actors can reuse user agents, so the origin network ranges must be checked.
@@ -194,6 +196,8 @@ By default, a random temporary key is generated every run.
 
 Multiple backends are supported, and rules specific on backend can be defined, and conditions and rules can match this as well.
 
+Subdomain wildcards like `*.example.com`, or full fallback wildcard `*` are supported.
+
 This allows one instance to run multiple domains or subdomains.
 
 ### Package path
@@ -215,7 +219,6 @@ This is tracked by tagging challenges with a readable flag indicating the type o
 The policy file at [examples/forgejo.yml](examples/forgejo.yml) provides a ready template to be used on your own Forgejo instance.
 
 Important notes:
-* Edit the `homesite` rule, as it's targeted to common users or orgs on the instance. A better regex might be possible in the future.
 * Edit the `http-cookie-check` challenge, as this will fetch the listed backend with the given session cookie to check for user login.
 * Adjust the desired blocked networks or others. A template list of network ranges is provided, feel free to remove these if not needed.
 * Check the conditions and base rules to change your challenges offered and other ordering.
@@ -233,6 +236,14 @@ Important notes:
 * Add or modify rules to target specific pages on your site as desired.
 * By default Googlebot / Bingbot / DuckDuckBot / Kagibot / Qwantbot / Yandexbot are allowed by useragent and network ranges.
 
+### Snippets
+
+You can define snippets to be included. YAML anchors/aliases are supported.
+
+See [examples/snippets/](examples/snippets/) for some defaults including indexer bots, challenges and other general matches.
+
+
+
 ## Why do this?
 In the past few years this small git instance has been hit by waves and waves of scraping.
 This was usually fought back by random useragent blocks for bots that did not follow [robots.txt](/robots.txt), until the past half year, where low-effort mass scraping was used more prominently.
@@ -280,16 +291,16 @@ go-away offers a highly configurable set of challenges and rules that you can ad
 go-away has most of the desired features from the original checklist that was made in its development. 
 However, a few points are left before go-away can be called v1.0.0:
 
-* [ ] Several parts of the code are going through a refactor, which won't impact end users or operators.
+* [x] Several parts of the code are going through a refactor, which won't impact end users or operators.
 * [ ] Documentation is lacking and a more extensive one with inline example is in the works.
-* [ ] Policy file syntax is going to stay mostly unchanged, except in the challenges definition section.
+* [x] Policy file syntax is going to stay mostly unchanged, except in the challenges definition section.
 * [ ] Allow users to pick fallback challenges if any fail, specially with custom ones.
 * [ ] Replace Anubis-like default template with own one.
 * [ ] Define strings and multi-language support for quick modification by operators without custom templates.
 * [ ] Have highly tested paths that match examples.
-* [ ] Caching of temporary fetches, for example, network ranges.
+* [x] Caching of temporary fetches, for example, network ranges.
-* [ ] Allow live and dynamic policy reloading.
+* [x] Allow live and dynamic policy reloading.
-* [ ] Multiple domains / subdomains -> one backend handling, CEL rules for backends
+* [x] Multiple domains / subdomains -> one backend handling, CEL rules for backends
 * [ ] Merge all rules and conditions into one large AST for higher performance.
 * [ ] Explore exposing a module for direct Caddy usage.
 * [ ] More defined way of picking HTTP/HTTP(s) listeners and certificates.
@@ -330,6 +341,8 @@ Available under [Dockerfile](Dockerfile). See the _docker compose_ below for the
 
 Example follows a hypothetical Forgejo server running on `http://forgejo:3000` serving `git.example.com`
 
+Container images are published under `git.gammaspectra.live/git/go-away`, `codeberg.org/weebdatahoarder/go-away` and `ghcr.io/weebdatahoarder/go-away`
+
 ```yaml
 networks:
   forgejo:
@@ -340,6 +353,8 @@ volumes:
     
 services:
   go-away:
+    # image: codeberg.org/weebdatahoarder/go-away:latest
+    # image: ghcr.io/weebdatahoarder/go-away:latest
     image: git.gammaspectra.live/git/go-away:latest
     restart: always
     ports:
@@ -351,6 +366,7 @@ services:
     volumes:
       - "goaway_cache:/cache"
       - "./examples/forgejo.yml:/policy.yml:ro"
+      - "./examples/snippets/:/policy/snippets/:ro"
     environment:
       #GOAWAY_BIND: ":8080"
       # Supported tcp, unix, and proxy (for enabling PROXY module for request unwrapping)
@@ -385,15 +401,15 @@ services:
       #GOAWAY_BACKEND_IP_HEADER: ""
       
       GOAWAY_POLICY: "/policy.yml"
+
+      GOAWAY_POLICY_SNIPPETS: "/policy/snippets"
       
       # Template, and theme for the template to pick. defaults to an anubis-like one
       # An file path can be specified. See embed/templates for a few examples
       GOAWAY_CHALLENGE_TEMPLATE: forgejo
       GOAWAY_CHALLENGE_TEMPLATE_THEME: forgejo-dark
       
-      # specify a DNSBL for usage in conditions. Defaults to DroneBL 
+      # Backend to match. Can be subdomain or full wildcards, "*.example.com" or "*"
-      # GOAWAY_DNSBL: "dnsbl.dronebl.org"
-      
       GOAWAY_BACKEND: "git.example.com=http://forgejo:3000"
       
     # additional backends can be specified via more command arguments  
@@ -407,8 +423,12 @@ services:
 
 
 ## Other Similar Projects
-* [Anubis](https://anubis.techaro.lol/): Proxy that uses JavaScript proof of work to weight request based on rules [[source]](https://github.com/TecharoHQ/anubis)
+
-* [anticrawl](https://flak.tedunangst.com/post/anticrawl): Go http handler / proxy for regex based rules [[source]](https://humungus.tedunangst.com/r/anticrawl)
+|                         Project                         |                                                                                                                          Forge                                                                                                                          | Description                                                                                                     |
+|:-------------------------------------------------------:|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|:----------------------------------------------------------------------------------------------------------------|
+|          [Anubis](https://anubis.techaro.lol/)          |        [![GitHub](https://img.shields.io/badge/GitHub-TecharoHQ/anubis-blue?style=flat&logo=github&labelColor=fff&logoColor=24292f)](https://github.com/TecharoHQ/anubis)<br/>Go / [MIT](https://github.com/TecharoHQ/anubis/blob/main/LICENSE)         | Proxy that uses JavaScript proof of work to weight request based on simple match rules                          |
+|         [powxy](https://sr.ht/~runxiyu/powxy/)          | [![sourcehut](https://img.shields.io/badge/sourcehut-~runxiyu/powxy-blue?style=flat&logo=sourcehut&labelColor=fff&logoColor=000)](https://git.sr.ht/~runxiyu/powxy)<br/> Go / [BSD 2-Clause](https://git.sr.ht/~runxiyu/powxy/tree/master/item/LICENSE) | Powxy is a reverse proxy that protects your upstream service by challenging clients with SHA-256 proof-of-work. |
+| [anticrawl](https://flak.tedunangst.com/post/anticrawl) |                                                                                          [[source]](https://humungus.tedunangst.com/r/anticrawl)<br/>Go / None                                                                                          | Go http handler / proxy for regex based rules                                                                   |
 
 
 ## Development

build-poison.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set -e
-set -o pipefail
-
-cd "$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
-
-
-go run ./generate-poison -path ./poison/

cmd/generate-poison/main.go

@@ -1,180 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"compress/gzip"
-	"flag"
-	"fmt"
-	"github.com/andybalholm/brotli"
-	"github.com/klauspost/compress/zstd"
-	"io"
-	"math/rand/v2"
-	"os"
-	"path"
-	"slices"
-	"strings"
-	"sync"
-)
-
-type poisonCharacterGenerator struct {
-	Header       []byte
-	AllowedBytes []byte
-	Repeat       int
-	counter      int
-}
-
-func (r *poisonCharacterGenerator) Read(p []byte) (n int, err error) {
-	if len(r.Header) > 0 {
-		copy(p, r.Header)
-		nn := min(len(r.Header), len(p))
-		r.Header = r.Header[nn:]
-		p = p[nn:]
-	}
-
-	stride := min(len(p), r.Repeat)
-	for i := 0; i < len(p); i += stride {
-		copy(p[i:], bytes.Repeat([]byte{r.AllowedBytes[r.counter]}, stride))
-		r.counter = (r.counter + 1) % len(r.AllowedBytes)
-	}
-	return len(p), nil
-}
-
-type poisonValuesGenerator struct {
-	Header        []byte
-	AllowedValues [][]byte
-	counter       int
-}
-
-func (r *poisonValuesGenerator) Read(p []byte) (n int, err error) {
-	var i int
-
-	if len(r.Header) > 0 {
-		copy(p, r.Header)
-		nn := min(len(r.Header), len(p))
-		r.Header = r.Header[nn:]
-		i += nn
-
-		for i < len(p) {
-			copy(p[i:], r.AllowedValues[r.counter])
-			i += len(r.AllowedValues[r.counter])
-			r.counter = (r.counter + 1) % len(r.AllowedValues)
-			if r.counter == 0 {
-				break
-			}
-		}
-	}
-
-	for i < len(p) {
-		buf := slices.Repeat(r.AllowedValues[r.counter], len(r.AllowedValues)-r.counter)
-		copy(p[i:], buf)
-		i += len(buf)
-		r.counter = (r.counter + 1) % len(r.AllowedValues)
-	}
-	return len(p), nil
-}
-
-func main() {
-
-	outputPath := flag.String("path", "./", "path to poison files")
-
-	flag.Parse()
-
-	const Gigabyte = 1024 * 1024 * 1024
-
-	compressPoison(*outputPath, "text/html", &poisonValuesGenerator{
-		Header: []byte(fmt.Sprintf("<!DOCTYPE html><html><head><title>%d</title></head><body>", rand.Uint64())),
-		AllowedValues: [][]byte{
-			[]byte("<div><div class=\"\"><h2></h2></div><br>\n"),
-			[]byte("<span><span><p><span>\n"),
-			[]byte("<p></span></script><h3><p><span>\n"),
-			[]byte("<div><span><p></h1>"),
-			[]byte("</div></div></div>\n"),
-			[]byte("</p></p></p>"),
-			[]byte("<h1>Are you a bot?</h1><img>\n"),
-			[]byte("</span></span></span><script>{let a = (new XMLSerializer).serializeToString(document); console.log(a); let b = URL.createObjectURL(new Blob([a])); Array.from(document.getElementsByTagName(\"img\")).forEach((img) => {img.src = b;}); document.getElementsByTagName(\"body\")[0].prepend((new DOMParser()).parseFromString(a, \"text/html\"));}</script>"),
-		},
-	}, Gigabyte)
-}
-
-var poisonEncodings = []string{"br", "zstd", "gzip"}
-
-func compressPoison(outputPath, mime string, r io.Reader, maxSize int64) {
-	r = io.LimitReader(r, maxSize)
-
-	var closers []func()
-	var encoders []io.Writer
-	var writers []io.Writer
-	var readers []io.Reader
-
-	for _, encoding := range poisonEncodings {
-		f, err := os.Create(path.Join(outputPath, strings.ReplaceAll(mime, "/", "_")+"."+encoding+".poison"))
-		if err != nil {
-			panic(err)
-		}
-		switch encoding {
-		case "zstd":
-			w, err := zstd.NewWriter(f, zstd.WithEncoderLevel(zstd.SpeedBestCompression), zstd.WithEncoderCRC(false), zstd.WithWindowSize(zstd.MaxWindowSize))
-			if err != nil {
-				panic(err)
-			}
-			encoders = append(encoders, w)
-			closers = append(closers, func() {
-				w.Close()
-				f.Close()
-			})
-		case "br":
-			w := brotli.NewWriterLevel(f, brotli.BestCompression)
-			encoders = append(encoders, w)
-			closers = append(closers, func() {
-				w.Close()
-				f.Close()
-			})
-		case "gzip":
-			w, err := gzip.NewWriterLevel(f, gzip.BestCompression)
-			if err != nil {
-				panic(err)
-			}
-			encoders = append(encoders, w)
-			closers = append(closers, func() {
-				w.Close()
-				f.Close()
-			})
-		}
-		r, w := io.Pipe()
-		readers = append(readers, r)
-		writers = append(writers, w)
-	}
-
-	var wg sync.WaitGroup
-
-	for i := range poisonEncodings {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-
-			_, err := io.Copy(encoders[i], readers[i])
-			if err != nil {
-				panic(err)
-			}
-			closers[i]()
-
-			// discard remaining data
-			_, _ = io.Copy(io.Discard, readers[i])
-		}()
-	}
-
-	_, err := io.Copy(io.MultiWriter(writers...), r)
-	if err != nil {
-		panic(err)
-	}
-
-	for _, w := range writers {
-		if pw, ok := w.(io.Closer); ok {
-			pw.Close()
-		} else {
-			panic("writer is not a Closer")
-		}
-	}
-
-	wg.Wait()
-}

cmd/go-away/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"context"
+	"bytes"
 	"crypto/ed25519"
 	"crypto/rand"
 	"crypto/tls"
@@ -15,19 +15,18 @@ import (
 	"github.com/pires/go-proxyproto"
 	"golang.org/x/crypto/acme"
 	"golang.org/x/crypto/acme/autocert"
-	"gopkg.in/yaml.v3"
 	"log"
 	"log/slog"
-	"maps"
 	"net"
 	"net/http"
 	"os"
+	"os/signal"
 	"path"
 	"runtime/debug"
 	"strconv"
 	"strings"
-	"sync"
+	"sync/atomic"
-	"time"
+	"syscall"
 )
 
 func setupListener(network, address, socketMode string, proxy bool) (net.Listener, string) {
@@ -77,14 +76,19 @@ func setupListener(network, address, socketMode string, proxy bool) (net.Listene
 	return listener, formattedAddress
 }
 
-var internalPackageName = func() string {
+var internalCmdName = "go-away"
+var internalMainName = "go-away"
+var internalMainVersion = "dev"
 
+func init() {
 	buildInfo, ok := debug.ReadBuildInfo()
 	if !ok {
-		return "go-away"
+		return
 	}
-	return buildInfo.Path
+	internalCmdName = buildInfo.Path
-}()
+	internalMainName = buildInfo.Main.Path
+	internalMainVersion = buildInfo.Main.Version
+}
 
 type MultiVar []string
 
@@ -129,20 +133,20 @@ func main() {
 	slogLevel := flag.String("slog-level", "WARN", "logging level (see https://pkg.go.dev/log/slog#hdr-Levels)")
 	debugMode := flag.Bool("debug", false, "debug mode with logs and server timings")
 	passThrough := flag.Bool("passthrough", false, "passthrough mode sends all requests to matching backends until state is loaded")
+	check := flag.Bool("check", false, "check configuration and policies, then exit")
 	acmeAutocert := flag.String("acme-autocert", "", "enables HTTP(s) mode and uses the provided ACME server URL or available service (available: letsencrypt)")
 
 	clientIpHeader := flag.String("client-ip-header", "", "Client HTTP header to fetch their IP address from (X-Real-Ip, X-Client-Ip, X-Forwarded-For, Cf-Connecting-Ip, etc.)")
 	backendIpHeader := flag.String("backend-ip-header", "", "Backend HTTP header to set the client IP address from, if empty defaults to leaving Client header alone (X-Real-Ip, X-Client-Ip, X-Forwarded-For, Cf-Connecting-Ip, etc.)")
 
-	dnsbl := flag.String("dnsbl", "dnsbl.dronebl.org", "blocklist for DNSBL (default DroneBL)")
-
 	cachePath := flag.String("cache", path.Join(os.TempDir(), "go_away_cache"), "path to temporary cache directory")
 
 	policyFile := flag.String("policy", "", "path to policy YAML file")
+	policySnippets := flag.String("policy-snippets", "", "path to YAML snippets folder")
 	challengeTemplate := flag.String("challenge-template", "anubis", "name or path of the challenge template to use (anubis, forgejo)")
 	challengeTemplateTheme := flag.String("challenge-template-theme", "", "name of the challenge template theme to use (forgejo => [forgejo-auto, forgejo-dark, forgejo-light, gitea...])")
 
-	packageName := flag.String("package-path", internalPackageName, "package name to expose in .well-known url path")
+	packageName := flag.String("package-path", internalCmdName, "package name to expose in .well-known url path")
 
 	jwtPrivateKeySeed := flag.String("jwt-private-key-seed", "", "Seed for the jwt private key, or on JWT_PRIVATE_KEY_SEED env. One be generated by passing \"generate\" as a value, follows RFC 8032 private key definition. Defaults to random")
 
@@ -170,6 +174,8 @@ func main() {
 		slog.SetDefault(slog.New(h))
 	}
 
+	slog.Info("go-away", "package", internalMainName, "version", internalMainVersion, "cmd", internalCmdName)
+
 	var seed []byte
 
 	var kValue string
@@ -200,22 +206,9 @@ func main() {
 
 	}
 
-	policyData, err := os.ReadFile(*policyFile)
-	if err != nil {
-		log.Fatal(fmt.Errorf("failed to read policy file: %w", err))
-	}
-
-	var p policy.Policy
-
-	if err = yaml.Unmarshal(policyData, &p); err != nil {
-		log.Fatal(fmt.Errorf("failed to parse policy file: %w", err))
-	}
-
 	createdBackends := make(map[string]http.Handler)
 
 	parsedBackends := make(map[string]string)
-	//TODO: deprecate
-	maps.Copy(parsedBackends, p.Backends)
 	for _, backend := range backends {
 		parts := strings.Split(backend, "=")
 		if len(parts) != 2 {
@@ -234,11 +227,27 @@ func main() {
 		createdBackends[k] = backend
 	}
 
+	if len(createdBackends) == 0 {
+		log.Fatal(fmt.Errorf("no backends defined in policy file"))
+	}
+
+	var cache utils.Cache
 	if *cachePath != "" {
 		err = os.MkdirAll(*cachePath, 0755)
 		if err != nil {
 			log.Fatal(fmt.Errorf("failed to create cache directory: %w", err))
 		}
+		for _, n := range []string{"networks", "acme"} {
+			err = os.MkdirAll(path.Join(*cachePath, n), 0755)
+			if err != nil {
+				log.Fatal(fmt.Errorf("failed to create cache sub directory %s: %w", n, err))
+			}
+		}
+
+		cache, err = utils.CacheDirectory(*cachePath)
+		if err != nil {
+			log.Fatal(fmt.Errorf("failed to open cache directory: %w", err))
+		}
 	}
 
 	var tlsConfig *tls.Config
@@ -264,99 +273,112 @@ func main() {
 		tlsConfig = acmeManager.TLSConfig()
 	}
 
-	var wg sync.WaitGroup
+	loadPolicyState := func() (http.Handler, error) {
+		policyData, err := os.ReadFile(*policyFile)
+		if err != nil {
+			return nil, fmt.Errorf("failed to read policy file: %w", err)
+		}
 
-	passThroughCtx, cancelFunc := context.WithCancel(context.Background())
+		p, err := policy.NewPolicy(bytes.NewReader(policyData), *policySnippets)
-	defer cancelFunc()
+		if err != nil {
+			return nil, fmt.Errorf("failed to parse policy file: %w", err)
+		}
 
-	if *passThrough {
+		settings := policy.Settings{
-		wg.Add(1)
+			Cache:                  cache,
-		go func() {
+			Backends:               createdBackends,
-			defer wg.Done()
+			Debug:                  *debugMode,
+			MainName:               internalMainName,
+			MainVersion:            internalMainVersion,
+			PackageName:            *packageName,
+			ChallengeTemplate:      *challengeTemplate,
+			ChallengeTemplateTheme: *challengeTemplateTheme,
+			PrivateKeySeed:         seed,
+			ClientIpHeader:         *clientIpHeader,
+			BackendIpHeader:        *backendIpHeader,
+			ChallengeResponseCode:  http.StatusTeapot,
+		}
 
-			server := utils.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		state, err := lib.NewState(*p, settings)
-				backend, ok := createdBackends[r.Host]
-				if !ok {
-					http.Error(w, http.StatusText(http.StatusServiceUnavailable), http.StatusServiceUnavailable)
-					return
-				}
 
-				backend.ServeHTTP(w, r)
+		if err != nil {
-			}), tlsConfig)
+			return nil, fmt.Errorf("failed to create state: %w", err)
-
+		}
-			listener, listenUrl := setupListener(*bindNetwork, *bind, *socketMode, *bindProxy)
+		return state, nil
-			slog.Warn(
-				"listening passthrough",
-				"url", listenUrl,
-			)
-			defer listener.Close()
-
-			wg.Add(1)
-			go func() {
-				defer wg.Done()
-
-				if tlsConfig != nil {
-					if err := server.ServeTLS(listener, "", ""); !errors.Is(err, http.ErrServerClosed) {
-						log.Fatal(err)
-					}
-				} else {
-					if err := server.Serve(listener); !errors.Is(err, http.ErrServerClosed) {
-						log.Fatal(err)
-					}
-				}
-			}()
-
-			<-passThroughCtx.Done()
-
-			ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-			defer cancel()
-
-			if err := server.Shutdown(ctx); err != nil {
-				log.Fatal(err)
-			}
-			_ = server.Close()
-		}()
 	}
 
-	settings := lib.StateSettings{
+	if *check {
-		Backends:               createdBackends,
+		_, err := loadPolicyState()
-		Debug:                  *debugMode,
+		if err != nil {
-		PackageName:            *packageName,
+			slog.Error(err.Error())
-		ChallengeTemplate:      *challengeTemplate,
+			os.Exit(1)
-		ChallengeTemplateTheme: *challengeTemplateTheme,
+		}
-		PrivateKeySeed:         seed,
+		slog.Info("load ok")
-		ClientIpHeader:         *clientIpHeader,
+		os.Exit(0)
-		BackendIpHeader:        *backendIpHeader,
 	}
 
-	if *dnsbl != "" {
-		settings.DNSBL = utils.NewDNSBL(*dnsbl, net.DefaultResolver)
-	}
-
-	state, err := lib.NewState(p, settings)
-
-	if err != nil {
-		log.Fatal(fmt.Errorf("failed to create state: %w", err))
-	}
-
-	// cancel the existing server listener
-	cancelFunc()
-	wg.Wait()
-
 	listener, listenUrl := setupListener(*bindNetwork, *bind, *socketMode, *bindProxy)
 	slog.Warn(
 		"listening",
 		"url", listenUrl,
 	)
 
-	server := utils.NewServer(state, tlsConfig)
+	var serverHandler atomic.Pointer[http.Handler]
+	server := utils.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if handler := serverHandler.Load(); handler == nil {
+			http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
+		} else {
+			(*handler).ServeHTTP(w, r)
+		}
+	}), tlsConfig)
+
+	if *passThrough {
+		// setup a passthrough handler temporarily
+		fn := http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			backend := utils.SelectHTTPHandler(createdBackends, r.Host)
+			if backend == nil {
+				http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
+			} else {
+				backend.ServeHTTP(w, r)
+			}
+		}))
+		serverHandler.Store(&fn)
+	}
+
+	go func() {
+		handler, err := loadPolicyState()
+		if err != nil {
+			log.Fatal(fmt.Errorf("failed to load policy state: %w", err))
+		}
+
+		serverHandler.Store(&handler)
+		slog.Warn(
+			"handler configuration loaded",
+		)
+
+		// allow reloading from now on
+		c := make(chan os.Signal, 1)
+		signal.Notify(c, syscall.SIGHUP)
+		for sig := range c {
+			if sig != syscall.SIGHUP {
+				continue
+			}
+			handler, err = loadPolicyState()
+			if err != nil {
+				slog.Error("handler configuration reload error", "err", err)
+				continue
+			}
+
+			serverHandler.Store(&handler)
+			slog.Warn("handler configuration reloaded")
+		}
+	}()
 
 	if tlsConfig != nil {
 		if err := server.ServeTLS(listener, "", ""); !errors.Is(err, http.ErrServerClosed) {
 			log.Fatal(err)
 		}
 	} else {
-
 		if err := server.Serve(listener); !errors.Is(err, http.ErrServerClosed) {
 			log.Fatal(err)
 		}

embed/embed.go

@@ -1,15 +1,59 @@
 package embed
 
-import "embed"
+import (
+	"embed"
+	"errors"
+	"io/fs"
+	"os"
+)
 
 //go:embed assets
-var AssetsFs embed.FS
+var assetsFs embed.FS
 
 //go:embed challenge
-var ChallengeFs embed.FS
+var challengeFs embed.FS
 
 //go:embed templates
-var TemplatesFs embed.FS
+var templatesFs embed.FS
 
-//go:embed poison/*.poison
+type FSInterface interface {
-var PoisonFs embed.FS
+	fs.FS
+	fs.ReadDirFS
+	fs.ReadFileFS
+}
+
+func trimPrefix(embedFS embed.FS, prefix string) FSInterface {
+	subFS, err := fs.Sub(embedFS, prefix)
+	if err != nil {
+		panic(err)
+	}
+	if properFS, ok := subFS.(FSInterface); ok {
+		return properFS
+	} else {
+		panic("unsupported")
+	}
+}
+
+var ChallengeFs = trimPrefix(challengeFs, "challenge")
+
+var TemplatesFs = trimPrefix(templatesFs, "templates")
+var AssetsFs = trimPrefix(assetsFs, "assets")
+
+func GetFallbackFS(embedFS FSInterface, prefix string) (FSInterface, error) {
+	var outFs fs.FS
+	if stat, err := os.Stat(prefix); err == nil && stat.IsDir() {
+		outFs = embedFS
+	} else if _, err := embedFS.ReadDir(prefix); err == nil {
+		outFs, err = fs.Sub(embedFS, prefix)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		return nil, err
+	}
+	if properFS, ok := outFs.(FSInterface); ok {
+		return properFS, nil
+	} else {
+		return nil, errors.New("unsupported FS")
+	}
+}

embed/templates/challenge-anubis.gohtml

@@ -11,7 +11,7 @@
         <meta name="{{ $key }}" content="{{ $value }}"/>
         {{end}}
     {{ end }}
-    {{ range .Tags }}
+    {{ range .HeaderTags }}
         {{ . }}
     {{ end }}
     <style>
@@ -155,7 +155,6 @@
         />
         {{if .Challenge }}
         <p id="status">Loading challenge <em>{{ .Challenge }}</em>...</p>
-        <script async type="module" src="{{ .Path }}/challenge/{{ .Challenge }}/challenge.mjs?cacheBust={{ .Random }}"></script>
         {{else if .Error}}
         <p id="status">Error: {{ .Error }}</p>
         {{else}}
@@ -202,6 +201,11 @@
             </p>
         </center>
     </footer>
+
+
+    {{ range .EndTags }}
+        {{ . }}
+    {{ end }}
 </main>
 </body>
 </html>

embed/templates/challenge-forgejo.gohtml

@@ -17,7 +17,7 @@
             <meta name="{{ $key }}" content="{{ $value }}"/>
         {{end}}
     {{ end }}
-    {{ range .Tags }}
+    {{ range .HeaderTags }}
         {{ . }}
     {{ end }}
 
@@ -62,7 +62,6 @@
 
                     {{if .Challenge }}
                     <h3 id="status">Loading challenge <em>{{ .Challenge }}</em>...</h3>
-                    <script async type="module" src="{{ .Path }}/challenge/{{ .Challenge }}/challenge.mjs?cacheBust={{ .Random }}"></script>
                     {{else if .Error}}
                     <h3 id="status">Error: {{ .Error }}</h3>
                     {{else}}
@@ -110,5 +109,9 @@
     </div>
 </footer>
 
+{{ range .EndTags }}
+    {{ . }}
+{{ end }}
+
 </body>
 </html>

examples/forgejo.yml

@@ -1,189 +1,41 @@
 # Example cmdline (forward requests from upstream to port :8080)
-# $ go-away --bind :8080 --backend git.example.com=http://forgejo:3000 --policy examples/forgejo.yml --challenge-template forgejo --challenge-template-theme forgejo-auto
+# $ go-away --bind :8080 --backend git.example.com=http://forgejo:3000 --policy examples/forgejo.yml --policy-snippets example/snippets/ --challenge-template forgejo --challenge-template-theme forgejo-auto
 
 
 
 # Define networks to be used later below
 networks:
-  # todo: support direct ASN lookups
+  # Networks will get included from snippets
-  # todo: cache these values
+
   huawei-cloud:
-    # AS136907
+    - asn: 136907
-    - url: https://raw.githubusercontent.com/ipverse/asn-ip/refs/heads/master/as/136907/aggregated.json
-      jq-path: '.subnets.ipv4[], .subnets.ipv6[]'
   alibaba-cloud:
-    # AS45102
+    - asn: 45102
-    - url: https://raw.githubusercontent.com/ipverse/asn-ip/refs/heads/master/as/45102/aggregated.json
-      jq-path: '.subnets.ipv4[], .subnets.ipv6[]'
   zenlayer-inc:
-    # AS21859
+    - asn: 21859
-    - url: https://raw.githubusercontent.com/ipverse/asn-ip/refs/heads/master/as/21859/aggregated.json
-      jq-path: '.subnets.ipv4[], .subnets.ipv6[]'
-  aws-cloud:
-    - url: https://ip-ranges.amazonaws.com/ip-ranges.json
-      jq-path: '(.prefixes[] | select(has("ip_prefix")) | .ip_prefix), (.prefixes[] | select(has("ipv6_prefix")) | .ipv6_prefix)'
-  google-cloud:
-    - url: https://www.gstatic.com/ipranges/cloud.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  oracle-cloud:
-    - url: https://docs.oracle.com/en-us/iaas/tools/public_ip_ranges.json
-      jq-path: '.regions[] | .cidrs[] | .cidr'
-  azure-cloud:
-    # todo: https://www.microsoft.com/en-us/download/details.aspx?id=56519 does not provide direct JSON
-    - url: https://raw.githubusercontent.com/femueller/cloud-ip-ranges/refs/heads/master/microsoft-azure-ip-ranges.json
-      jq-path: '.values[] | .properties.addressPrefixes[]'
-
-  digitalocean:
-    - url: https://www.digitalocean.com/geo/google.csv
-      regex: "(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+),"
-  linode:
-    - url: https://geoip.linode.com/
-      regex: "(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+),"
-  vultr:
-    - url: "https://geofeed.constant.com/?json"
-      jq-path: '.subnets[] | .ip_prefix'
-  cloudflare:
-    - url: https://www.cloudflare.com/ips-v4
-      regex: "(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+/[0-9]+)"
-    - url: https://www.cloudflare.com/ips-v6
-      regex: "(?P<prefix>[0-9a-f:]+::/[0-9]+)"
-
-  icloud-private-relay:
-    - url: https://mask-api.icloud.com/egress-ip-ranges.csv
-      regex: "(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+),"
-  tunnelbroker-relay:
-    # HE Tunnelbroker
-    - url: https://tunnelbroker.net/export/google
-      regex: "(?P<prefix>([0-9a-f:]+::)/[0-9]+),"
-
-
-  googlebot:
-    - url: https://developers.google.com/static/search/apis/ipranges/googlebot.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  bingbot:
-    - url: https://www.bing.com/toolbox/bingbot.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  qwantbot:
-    - url: https://help.qwant.com/wp-content/uploads/sites/2/2025/01/qwantbot.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  duckduckbot:
-    - url: https://duckduckgo.com/duckduckgo-help-pages/results/duckduckbot
-      regex: "<li><div>(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)</div></li>"
-  yandexbot:
-    # todo: detected as bot
-    # - url: https://yandex.com/ips
-    #  regex: "<span>(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+)[ \\\\t]*</span><br/>"
-    - prefixes:
-        - "5.45.192.0/18"
-        - "5.255.192.0/18"
-        - "37.9.64.0/18"
-        - "37.140.128.0/18"
-        - "77.88.0.0/18"
-        - "84.252.160.0/19"
-        - "87.250.224.0/19"
-        - "90.156.176.0/22"
-        - "93.158.128.0/18"
-        - "95.108.128.0/17"
-        - "141.8.128.0/18"
-        - "178.154.128.0/18"
-        - "185.32.187.0/24"
-        - "2a02:6b8::/29"
-  kagibot:
-    - url: https://kagi.com/bot
-      regex: "\\n(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+) "
 
 
 challenges:
-  js-pow-sha256:
+  # Challenges will get included from snippets
-    # Asset must be under challenges/{name}/static/{asset}
-    # Other files here will be available under that path
-    mode: js
-    asset: load.mjs
-    parameters:
-      difficulty: 20
-    runtime:
-      mode: wasm
-      # Verify must be under challenges/{name}/runtime/{asset}
-      asset: runtime.wasm
-      probability: 0.02
-
-  # Challenges with a cookie, self redirect (non-JS, requires HTTP parsing)
-  self-cookie:
-    mode: "cookie"
-
-
-  # Challenges with a redirect via Link header with rel=preload and early hints (non-JS, requires HTTP parsing, fetching and logic)
-  # Works on HTTP/2 and above!
-  self-preload-link:
-    condition: '"Sec-Fetch-Mode" in headers && headers["Sec-Fetch-Mode"] == "navigate"'
-    mode: "preload-link"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-    parameters:
-      preload-early-hint-deadline: 3s
-      key-code: 200
-      key-mime: text/css
-      key-content: ""
-
-  # Challenges with a redirect via Refresh header (non-JS, requires HTTP parsing and logic)
-  self-header-refresh:
-    mode: "header-refresh"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-
-  # Challenges with a redirect via Refresh meta (non-JS, requires HTML parsing and logic)
-  self-meta-refresh:
-    mode: "meta-refresh"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-
-  # Challenges with loading a random CSS or image document (non-JS, requires HTML parsing and logic)
-  self-resource-load:
-    mode: "resource-load"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-    parameters:
-      key-code: 200
-      key-mime: text/css
-      key-content: ""
-
 
   # Verifies the existence of a cookie and confirms it against some backend request, passing the entire client cookie contents
   http-cookie-check:
-    mode: http
+    runtime: http
-    url: http://forgejo:3000/user/stopwatches
-    # url: http://forgejo:3000/repo/search
-    # url: http://forgejo:3000/notifications/new
     parameters:
+      http-url: http://forgejo:3000/user/stopwatches
+      # http-url: http://forgejo:3000/repo/search
+      # http-url: http://forgejo:3000/notifications/new
       http-method: GET
       http-cookie: i_like_gitea
       http-code: 200
+      verify-probability: 0.1
 
 conditions:
   # Conditions will get replaced on rules AST when found as ($condition-name)
-  # Checks to detect a headless chromium via headers only
-  is-headless-chromium:
-    - 'userAgent.contains("HeadlessChrome") || userAgent.contains("HeadlessChromium")'
-    - '"Sec-Ch-Ua" in headers && (headers["Sec-Ch-Ua"].contains("HeadlessChrome") || headers["Sec-Ch-Ua"].contains("HeadlessChromium"))'
-    #- '(userAgent.contains("Chrome/") || userAgent.contains("Chromium/")) && (!("Accept-Language" in headers) || !("Accept-Encoding" in headers))'
 
-  is-generic-browser:
+  # Conditions will get included from snippets
-    - 'userAgent.startsWith("Mozilla/") || userAgent.startsWith("Opera/")'
-
-  is-well-known-asset:
-    - 'path == "/robots.txt"'
-    - 'path.startsWith("/.well-known")'
 
   is-static-asset:
-    - 'path == "/favicon.ico"'
     - 'path == "/apple-touch-icon.png"'
     - 'path == "/apple-touch-icon-precomposed.png"'
     - 'path.startsWith("/assets/")'
@@ -193,42 +45,12 @@ conditions:
     - 'path.startsWith("/user/avatar/")'
     - 'path.startsWith("/attachments/")'
 
-  is-git-ua:
-    - 'userAgent.startsWith("git/") || userAgent.contains("libgit")'
-    - 'userAgent.startsWith("go-git")'
-    - 'userAgent.startsWith("JGit/") || userAgent.startsWith("JGit-")'
-    # Golang proxy and initial fetch
-    - 'userAgent.startsWith("GoModuleMirror/")'
-    - 'userAgent.startsWith("Go-http-client/") && "go-get" in query && query["go-get"] == "1"'
-    - '"Git-Protocol" in headers && headers["Git-Protocol"] == "version=2"'
   is-git-path:
     - 'path.matches("^/[^/]+/[^/]+/(git-upload-pack|git-receive-pack|HEAD|info/refs|info/lfs|objects)")'
 
-  is-generic-robot-ua:
-    - 'userAgent.contains("compatible;") && !userAgent.contains("Trident/")'
-    - 'userAgent.matches("\\+https?://")'
-    - 'userAgent.contains("@")'
-    - 'userAgent.matches("[bB]ot/[0-9]")'
-
-  is-tool-ua:
-    - 'userAgent.startsWith("python-requests/")'
-    - 'userAgent.startsWith("Python-urllib/")'
-    - 'userAgent.startsWith("python-httpx/")'
-    - 'userAgent.contains("aoihttp/")'
-    - 'userAgent.startsWith("http.rb/")'
-    - 'userAgent.startsWith("curl/")'
-    - 'userAgent.startsWith("Wget/")'
-    - 'userAgent.startsWith("libcurl/")'
-    - 'userAgent.startsWith("okhttp/")'
-    - 'userAgent.startsWith("Java/")'
-    - 'userAgent.startsWith("Apache-HttpClient//")'
-    - 'userAgent.startsWith("Go-http-client/")'
-    - 'userAgent.startsWith("node-fetch/")'
-    - 'userAgent.startsWith("reqwest/")'
-
   is-suspicious-crawler:
     # TLS Fingerprint for specific agent without ALPN
-    - '(userAgent.startsWith("Mozilla/") || userAgent.startsWith("Opera/")) && fpJA4.matches("^t[0-9a-z]+00_")'
+    - '(userAgent.startsWith("Mozilla/") || userAgent.startsWith("Opera/")) && ("ja4" in fp && fp.ja4.matches("^t[0-9a-z]+00_"))'
     # Old engines
     - 'userAgent.contains("Presto/") || userAgent.contains("Trident/")'
     # Old IE browsers
@@ -243,6 +65,7 @@ conditions:
     - 'userAgent.startsWith("Opera/")'
     #- 'userAgent.matches("Gecko/(201[0-9]|200[0-9])")'
     - 'userAgent.matches("^Mozilla/[1-4]")'
+
   is-heavy-resource:
     - 'path.startsWith("/explore/")'
     - 'path.matches("^/[^/]+/[^/]+/src/commit/")'
@@ -271,8 +94,8 @@ rules:
 
   - name: undesired-networks
     conditions:
-      - 'inNetwork("huawei-cloud", remoteAddress) || inNetwork("alibaba-cloud", remoteAddress) || inNetwork("zenlayer-inc", remoteAddress)'
+      - 'remoteAddress.network("huawei-cloud") || remoteAddress.network("alibaba-cloud") || remoteAddress.network("zenlayer-inc")'
-    action: poison
+    action: drop
 
   - name: undesired-crawlers
     conditions:
@@ -296,7 +119,7 @@ rules:
       - 'userAgent.contains("Amazonbot") || userAgent.contains("Google-Extended") || userAgent.contains("PanguBot") || userAgent.contains("AI2Bot") || userAgent.contains("Diffbot") || userAgent.contains("cohere-training-data-crawler") || userAgent.contains("Applebot-Extended")'
       # SEO / Ads and marketing
       - 'userAgent.contains("BLEXBot")'
-    action: poison
+    action: drop
 
   - name: unknown-crawlers
     conditions:
@@ -305,22 +128,22 @@ rules:
     action: deny
 
   # check a sequence of challenges for non logged in
-  - name: suspicious-crawlers/0
+  - name: suspicious-crawlers
     conditions: ['($is-suspicious-crawler)']
-    action: check
+    action: none
-    challenges: [js-pow-sha256, http-cookie-check]
+    children:
-  - name: suspicious-crawlers/1
+      - name: 0
-    conditions: ['($is-suspicious-crawler)']
+        action: check
-    action: check
+        settings:
-    challenges: [self-preload-link]
+          challenges: [js-pow-sha256, http-cookie-check]
-  - name: suspicious-crawlers/2
+      - name: 1
-    conditions: ['($is-suspicious-crawler)']
+        action: check
-    action: check
+        settings:
-    challenges: [self-header-refresh]
+          challenges: [preload-link, resource-load]
-  - name: suspicious-crawlers/3
+      - name: 2
-    conditions: ['($is-suspicious-crawler)']
+        action: check
-    action: check
+        settings:
-    challenges: [self-resource-load]
+          challenges: [header-refresh]
 
   - name: always-pow-challenge
     conditions:
@@ -337,7 +160,8 @@ rules:
       # Match archive downloads from browsers and not tools
       - 'path.matches("^/[^/]+/[^/]+/archive/.*\\.(bundle|zip|tar\\.gz)") && ($is-generic-browser)'
     action: challenge
-    challenges: [ js-pow-sha256 ]
+    settings:
+      challenges: [ js-pow-sha256 ]
 
   - name: allow-git-operations
     conditions:
@@ -393,32 +217,37 @@ rules:
       # generic /*/*/ match gave too many options for scrapers to trigger random endpoints
       # this is a negative match of endpoints that Forgejo holds as reserved as users or orgs
       # see https://codeberg.org/forgejo/forgejo/src/branch/forgejo/models/user/user.go#L582
-      - '(path.matches("^/[^/]+/[^/]+/?$") || path.matches("^/[^/]+/[^/]+/(issues|pulls)/[0-9]+$") || (path.matches("^/[^/]+/?$") && size(query) == 0)) && !path.matches("(?i)^/(api|metrics|v2|assets|attachments|avatar|avatars|repo-avatars|captcha|login|org|repo|user|admin|devtest|explore|issues|pulls|milestones|notifications|ghost)(/|$)")'
+      - '(path.matches("^/[^/]+/[^/]+/?$") || path.matches("^/[^/]+/[^/]+/badges/") || path.matches("^/[^/]+/[^/]+/(issues|pulls)/[0-9]+$") || (path.matches("^/[^/]+/?$") && size(query) == 0)) && !path.matches("(?i)^/(api|metrics|v2|assets|attachments|avatar|avatars|repo-avatars|captcha|login|org|repo|user|admin|devtest|explore|issues|pulls|milestones|notifications|ghost)(/|$)")'
     action: pass
 
   - name: desired-crawlers
     conditions:
-      - 'userAgent.contains("+https://kagi.com/bot") && inNetwork("kagibot", remoteAddress)'
+      - *is-bot-googlebot
-      - '(userAgent.contains("+http://www.google.com/bot.html") || userAgent.contains("Google-PageRenderer") || userAgent.contains("Google-InspectionTool") || userAgent.contains("Googlebot")) && inNetwork("googlebot", remoteAddress)'
+      - *is-bot-bingbot
-      - 'userAgent.contains("+http://www.bing.com/bingbot.htm") && inNetwork("bingbot", remoteAddress)'
+      - *is-bot-duckduckbot
-      - 'userAgent.contains("+http://duckduckgo.com/duckduckbot.html") && inNetwork("duckduckbot", remoteAddress)'
+      - *is-bot-kagibot
-      - 'userAgent.contains("+https://help.qwant.com/bot/") && inNetwork("qwantbot", remoteAddress)'
+      - *is-bot-qwantbot
-      - 'userAgent.contains("+http://yandex.com/bots") && inNetwork("yandexbot", remoteAddress)'
+      - *is-bot-yandexbot
     action: pass
 
   # check a sequence of challenges
-  - name: heavy-operations/0
+  - name: heavy-operations
-    action: check
-    challenges: [self-preload-link, self-header-refresh, js-pow-sha256, http-cookie-check]
-    conditions: ['($is-heavy-resource)']
-  - name: heavy-operations/1
-    action: check
-    challenges: [self-resource-load, js-pow-sha256, http-cookie-check]
     conditions: ['($is-heavy-resource)']
+    action: none
+    children:
+      - name: 0
+        action: check
+        settings:
+          challenges: [preload-link, header-refresh, js-pow-sha256, http-cookie-check]
+      - name: 1
+        action: check
+        settings:
+          challenges: [ resource-load, js-pow-sha256, http-cookie-check ]
 
   - name: standard-bots
     action: check
-    challenges: [self-meta-refresh, self-resource-load]
+    settings:
+      challenges: [meta-refresh, resource-load]
     conditions:
       - '($is-generic-robot-ua)'
 
@@ -433,15 +262,20 @@ rules:
     action: pass
 
   # check DNSBL and serve harder challenges
+  # todo: make this specific to score
   - name: undesired-dnsbl
-    conditions:
-      - 'inDNSBL(remoteAddress)'
     action: check
-    challenges: [js-pow-sha256, http-cookie-check]
+    settings:
+      challenges: [dnsbl]
+      # if DNSBL fails, check additional challenges
+      fail: check
+      fail-settings:
+        challenges: [js-pow-sha256, http-cookie-check]
 
   - name: suspicious-fetchers
     action: check
-    challenges: [js-pow-sha256]
+    settings:
+      challenges: [js-pow-sha256]
     conditions:
       - 'userAgent.contains("facebookexternalhit/") || userAgent.contains("facebookcatalog/")'
 
@@ -453,19 +287,22 @@ rules:
 
   - name: plaintext-browser
     action: challenge
-    challenges: [http-cookie-check, self-meta-refresh, self-cookie]
+    settings:
+      challenges: [http-cookie-check, meta-refresh, cookie]
     conditions:
       - 'userAgent.startsWith("Lynx/")'
 
   - name: standard-tools
     action: challenge
-    challenges: [self-cookie]
+    settings:
+      challenges: [cookie]
     conditions:
       - '($is-tool-ua)'
       - '!($is-generic-browser)'
 
   - name: standard-browser
     action: challenge
-    challenges: [http-cookie-check, self-preload-link, self-meta-refresh, self-resource-load, js-pow-sha256]
+    settings:
+      challenges: [http-cookie-check, preload-link, meta-refresh, resource-load, js-pow-sha256]
     conditions:
       - '($is-generic-browser)'

examples/generic.yml

@@ -1,153 +1,27 @@
 # Example cmdline (forward requests from upstream to port :8080)
-# $ go-away --bind :8080 --backend site.example.com=http://site:3000 --policy examples/generic.yml --challenge-template anubis
+# $ go-away --bind :8080 --backend site.example.com=http://site:3000 --policy examples/generic.yml --policy-snippets example/snippets/ --challenge-template anubis
 
 
 
 # Define networks to be used later below
 networks:
-
+  # Networks will get included from snippets
-  googlebot:
-    - url: https://developers.google.com/static/search/apis/ipranges/googlebot.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  bingbot:
-    - url: https://www.bing.com/toolbox/bingbot.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  qwantbot:
-    - url: https://help.qwant.com/wp-content/uploads/sites/2/2025/01/qwantbot.json
-      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
-  duckduckbot:
-    - url: https://duckduckgo.com/duckduckgo-help-pages/results/duckduckbot
-      regex: "<li><div>(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)</div></li>"
-  yandexbot:
-    # todo: detected as bot
-    # - url: https://yandex.com/ips
-    #  regex: "<span>(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+)[ \\\\t]*</span><br/>"
-    - prefixes:
-        - "5.45.192.0/18"
-        - "5.255.192.0/18"
-        - "37.9.64.0/18"
-        - "37.140.128.0/18"
-        - "77.88.0.0/18"
-        - "84.252.160.0/19"
-        - "87.250.224.0/19"
-        - "90.156.176.0/22"
-        - "93.158.128.0/18"
-        - "95.108.128.0/17"
-        - "141.8.128.0/18"
-        - "178.154.128.0/18"
-        - "185.32.187.0/24"
-        - "2a02:6b8::/29"
-  kagibot:
-    - url: https://kagi.com/bot
-      regex: "\\n(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+) "
 
 
 challenges:
-  js-pow-sha256:
+  # Challenges will get included from snippets
-    # Asset must be under challenges/{name}/static/{asset}
+  
-    # Other files here will be available under that path
-    mode: js
-    asset: load.mjs
-    parameters:
-      difficulty: 15
-    runtime:
-      mode: wasm
-      # Verify must be under challenges/{name}/runtime/{asset}
-      asset: runtime.wasm
-      probability: 0.02
-
-  # Challenges with a cookie, self redirect (non-JS, requires HTTP parsing)
-  self-cookie:
-    mode: "cookie"
-
-
-  # Challenges with a redirect via Link header with rel=preload and early hints (non-JS, requires HTTP parsing, fetching and logic)
-  # Works on HTTP/2 and above!
-  self-preload-link:
-    condition: '"Sec-Fetch-Mode" in headers && headers["Sec-Fetch-Mode"] == "navigate"'
-    mode: "preload-link"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-    parameters:
-      preload-early-hint-deadline: 3s
-      key-code: 200
-      key-mime: text/css
-      key-content: ""
-
-  # Challenges with a redirect via Refresh header (non-JS, requires HTTP parsing and logic)
-  self-header-refresh:
-    mode: "header-refresh"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-
-  # Challenges with a redirect via Refresh meta (non-JS, requires HTML parsing and logic)
-  self-meta-refresh:
-    mode: "meta-refresh"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-
-  # Challenges with loading a random CSS or image document (non-JS, requires HTML parsing and logic)
-  self-resource-load:
-    mode: "resource-load"
-    runtime:
-      # verifies that result = key
-      mode: "key"
-      probability: 0.1
-    parameters:
-      key-code: 200
-      key-mime: text/css
-      key-content: ""
-
 conditions:
   # Conditions will get replaced on rules AST when found as ($condition-name)
-  # Checks to detect a headless chromium via headers only
-  is-headless-chromium:
-    - 'userAgent.contains("HeadlessChrome") || userAgent.contains("HeadlessChromium")'
-    - '"Sec-Ch-Ua" in headers && (headers["Sec-Ch-Ua"].contains("HeadlessChrome") || headers["Sec-Ch-Ua"].contains("HeadlessChromium"))'
-    #- '(userAgent.contains("Chrome/") || userAgent.contains("Chromium/")) && (!("Accept-Language" in headers) || !("Accept-Encoding" in headers))'
 
-  is-generic-browser:
+  # Conditions will get included from snippets
-    - 'userAgent.startsWith("Mozilla/") || userAgent.startsWith("Opera/")'
 
-  is-well-known-asset:
-    - 'path == "/robots.txt"'
-    - 'path.startsWith("/.well-known")'
 
   is-static-asset:
-    - 'path == "/favicon.ico"'
     - 'path == "/apple-touch-icon.png"'
     - 'path == "/apple-touch-icon-precomposed.png"'
     - 'path.matches("\\.(manifest|ttf|woff|woff2|jpg|jpeg|gif|png|webp|avif|svg|mp4|webm|css|js|mjs|wasm)$")'
 
-
-  is-generic-robot-ua:
-    - 'userAgent.contains("compatible;") && !userAgent.contains("Trident/")'
-    - 'userAgent.matches("\\+https?://")'
-    - 'userAgent.contains("@")'
-    - 'userAgent.matches("[bB]ot/[0-9]")'
-
-  is-tool-ua:
-    - 'userAgent.startsWith("python-requests/")'
-    - 'userAgent.startsWith("Python-urllib/")'
-    - 'userAgent.startsWith("python-httpx/")'
-    - 'userAgent.contains("aoihttp/")'
-    - 'userAgent.startsWith("http.rb/")'
-    - 'userAgent.startsWith("curl/")'
-    - 'userAgent.startsWith("Wget/")'
-    - 'userAgent.startsWith("libcurl/")'
-    - 'userAgent.startsWith("okhttp/")'
-    - 'userAgent.startsWith("Java/")'
-    - 'userAgent.startsWith("Apache-HttpClient//")'
-    - 'userAgent.startsWith("Go-http-client/")'
-    - 'userAgent.startsWith("node-fetch/")'
-    - 'userAgent.startsWith("reqwest/")'
-
   is-suspicious-crawler:
     - 'userAgent.contains("Presto/") || userAgent.contains("Trident/")'
     # Old IE browsers
@@ -198,7 +72,7 @@ rules:
       - 'userAgent.contains("Amazonbot") || userAgent.contains("Google-Extended") || userAgent.contains("PanguBot") || userAgent.contains("AI2Bot") || userAgent.contains("Diffbot") || userAgent.contains("cohere-training-data-crawler") || userAgent.contains("Applebot-Extended")'
       # SEO / Ads and marketing
       - 'userAgent.contains("BLEXBot")'
-    action: deny
+    action: drop
 
   - name: unknown-crawlers
     conditions:
@@ -207,31 +81,31 @@ rules:
     action: deny
 
   # check a sequence of challenges
-  - name: suspicious-crawlers/0
+  - name: suspicious-crawlers
     conditions: ['($is-suspicious-crawler)']
-    action: check
+    action: none
-    challenges: [js-pow-sha256]
+    children:
-  - name: suspicious-crawlers/1
+      - name: 0
-    conditions: ['($is-suspicious-crawler)']
+        action: check
-    action: check
+        settings:
-    challenges: [self-preload-link]
+          challenges: [js-pow-sha256]
-  - name: suspicious-crawlers/2
+      - name: 1
-    conditions: ['($is-suspicious-crawler)']
+        action: check
-    action: check
+        settings:
-    challenges: [self-header-refresh]
+          challenges: [preload-link, resource-load]
-  - name: suspicious-crawlers/3
+      - name: 2
-    conditions: ['($is-suspicious-crawler)']
+        action: check
-    action: check
+        settings:
-    challenges: [self-resource-load]
+          challenges: [header-refresh]
 
   - name: desired-crawlers
     conditions:
-      - 'userAgent.contains("+https://kagi.com/bot") && inNetwork("kagibot", remoteAddress)'
+      - *is-bot-googlebot
-      - '(userAgent.contains("+http://www.google.com/bot.html") || userAgent.contains("Google-InspectionTool") || userAgent.contains("Googlebot")) && inNetwork("googlebot", remoteAddress)'
+      - *is-bot-bingbot
-      - 'userAgent.contains("+http://www.bing.com/bingbot.htm") && inNetwork("bingbot", remoteAddress)'
+      - *is-bot-duckduckbot
-      - 'userAgent.contains("+http://duckduckgo.com/duckduckbot.html") && inNetwork("duckduckbot", remoteAddress)'
+      - *is-bot-kagibot
-      - 'userAgent.contains("+https://help.qwant.com/bot/") && inNetwork("qwantbot", remoteAddress)'
+      - *is-bot-qwantbot
-      - 'userAgent.contains("+http://yandex.com/bots") && inNetwork("yandexbot", remoteAddress)'
+      - *is-bot-yandexbot
     action: pass
 
   - name: homesite
@@ -240,15 +114,20 @@ rules:
     action: pass
 
   # check DNSBL and serve harder challenges
+  # todo: make this specific to score
   - name: undesired-dnsbl
-    conditions:
-      - 'inDNSBL(remoteAddress)'
     action: check
-    challenges: [js-pow-sha256]
+    settings:
+      challenges: [dnsbl]
+      # if DNSBL fails, check additional challenges
+      fail: check
+      fail-settings:
+        challenges: [js-pow-sha256]
 
   - name: suspicious-fetchers
     action: check
-    challenges: [js-pow-sha256]
+    settings:
+      challenges: [js-pow-sha256]
     conditions:
       - 'userAgent.contains("facebookexternalhit/") || userAgent.contains("facebookcatalog/")'
 
@@ -260,13 +139,15 @@ rules:
 
   - name: plaintext-browser
     action: challenge
-    challenges: [self-meta-refresh, self-cookie]
+    settings:
+      challenges: [meta-refresh, cookie]
     conditions:
       - 'userAgent.startsWith("Lynx/")'
 
   - name: standard-tools
     action: challenge
-    challenges: [self-cookie]
+    settings:
+      challenges: [cookie]
     conditions:
       - '($is-generic-robot-ua)'
       - '($is-tool-ua)'
@@ -274,6 +155,7 @@ rules:
 
   - name: standard-browser
     action: challenge
-    challenges: [self-preload-link, self-meta-refresh, self-resource-load, js-pow-sha256]
+    settings:
+      challenges: [preload-link, meta-refresh, resource-load, js-pow-sha256]
     conditions:
       - '($is-generic-browser)'

examples/snippets/bot-bingbot.yml

@@ -0,0 +1,8 @@
+networks:
+  bingbot:
+    - url: https://www.bing.com/toolbox/bingbot.json
+      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
+
+conditions:
+  is-bot-bingbot:
+      - &is-bot-bingbot 'userAgent.contains("+http://www.bing.com/bingbot.htm") && remoteAddress.network("bingbot")'

examples/snippets/bot-duckduckbot.yml

@@ -0,0 +1,8 @@
+networks:
+  duckduckbot:
+    - url: https://duckduckgo.com/duckduckgo-help-pages/results/duckduckbot
+      regex: "<li><div>(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)</div></li>"
+
+conditions:
+  is-bot-duckduckbot:
+      - &is-bot-duckduckbot 'userAgent.contains("+http://duckduckgo.com/duckduckbot.html") && remoteAddress.network("duckduckbot")'

examples/snippets/bot-googlebot.yml

@@ -0,0 +1,8 @@
+networks:
+  googlebot:
+    - url: https://developers.google.com/static/search/apis/ipranges/googlebot.json
+      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
+
+conditions:
+  is-bot-googlebot:
+      - &is-bot-googlebot '(userAgent.contains("+http://www.google.com/bot.html") || userAgent.contains("Google-PageRenderer") || userAgent.contains("Google-InspectionTool") || userAgent.contains("Googlebot")) && remoteAddress.network("googlebot")'

examples/snippets/bot-kagibot.yml

@@ -0,0 +1,8 @@
+networks:
+  kagibot:
+    - url: https://kagi.com/bot
+      regex: "\\n(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+) "
+
+conditions:
+  is-bot-kagibot:
+      - &is-bot-kagibot 'userAgent.contains("+https://kagi.com/bot") && remoteAddress.network("kagibot")'

examples/snippets/bot-qwantbot.yml

@@ -0,0 +1,8 @@
+networks:
+  qwantbot:
+    - url: https://help.qwant.com/wp-content/uploads/sites/2/2025/01/qwantbot.json
+      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
+
+conditions:
+  is-bot-qwantbot:
+      - &is-bot-qwantbot 'userAgent.contains("+https://help.qwant.com/bot/") && remoteAddress.network("qwantbot")'

examples/snippets/bot-yandexbot.yml

@@ -0,0 +1,24 @@
+networks:
+  yandexbot:
+    # todo: detected as bot
+    # - url: https://yandex.com/ips
+    #  regex: "<span>(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+)[ \\\\t]*</span><br/>"
+    - prefixes:
+      - "5.45.192.0/18"
+      - "5.255.192.0/18"
+      - "37.9.64.0/18"
+      - "37.140.128.0/18"
+      - "77.88.0.0/18"
+      - "84.252.160.0/19"
+      - "87.250.224.0/19"
+      - "90.156.176.0/22"
+      - "93.158.128.0/18"
+      - "95.108.128.0/17"
+      - "141.8.128.0/18"
+      - "178.154.128.0/18"
+      - "185.32.187.0/24"
+      - "2a02:6b8::/29"
+
+conditions:
+  is-bot-yandexbot:
+      - &is-bot-yandexbot 'userAgent.contains("+http://yandex.com/bots") && remoteAddress.network("yandexbot")'

examples/snippets/challenge-dnsbl.yml

@@ -0,0 +1,6 @@
+challenges:
+  dnsbl:
+    runtime: dnsbl
+    parameters:
+      dnsbl-decay: 1h
+      dnsbl-timeout: 1s

examples/snippets/challenge-js-pow-sha256.yml

@@ -0,0 +1,15 @@
+challenges:
+  js-pow-sha256:
+    runtime: js
+    parameters:
+      # specifies the folder path that assets are under
+      # can be either embedded or external path
+      # defaults to name of challenge
+      path: "js-pow-sha256"
+      # needs to be under static folder
+      js-loader: load.mjs
+      # needs to be under runtime folder
+      wasm-runtime: runtime.wasm
+      wasm-runtime-settings:
+        difficulty: 20
+      verify-probability: 0.02

examples/snippets/challenges-non-js.yml

@@ -0,0 +1,28 @@
+challenges:
+  # Challenges with a cookie, self redirect (non-JS, requires HTTP parsing)
+  cookie:
+    runtime: "cookie"
+
+  # Challenges with a redirect via Link header with rel=preload and early hints (non-JS, requires HTTP parsing, fetching and logic)
+  # Works on HTTP/2 and above!
+  preload-link:
+    condition: '"Sec-Fetch-Mode" in headers && headers["Sec-Fetch-Mode"] == "navigate"'
+    runtime: "preload-link"
+    parameters:
+      preload-early-hint-deadline: 3s
+
+  # Challenges with a redirect via Refresh header (non-JS, requires HTTP parsing and logic)
+  header-refresh:
+    runtime: "refresh"
+    parameters:
+      refresh-via: "header"
+
+  # Challenges with a redirect via Refresh meta (non-JS, requires HTML parsing and logic)
+  meta-refresh:
+    runtime: "refresh"
+    parameters:
+      refresh-via: "meta"
+
+  # Challenges with loading a random CSS or image document (non-JS, requires HTML parsing and logic)
+  resource-load:
+    runtime: "resource-load"

examples/snippets/conditions-generic.yml

@@ -0,0 +1,45 @@
+conditions:
+  is-well-known-asset:
+    - 'path == "/robots.txt"'
+    - 'path == "/favicon.ico"'
+    - 'path.startsWith("/.well-known")'
+
+  is-git-ua:
+    - 'userAgent.startsWith("git/") || userAgent.contains("libgit")'
+    - 'userAgent.startsWith("go-git")'
+    - 'userAgent.startsWith("JGit/") || userAgent.startsWith("JGit-")'
+    # Golang proxy and initial fetch
+    - 'userAgent.startsWith("GoModuleMirror/")'
+    - 'userAgent.startsWith("Go-http-client/") && "go-get" in query && query["go-get"] == "1"'
+    - '"Git-Protocol" in headers && headers["Git-Protocol"] == "version=2"'
+
+  is-generic-browser:
+    - 'userAgent.startsWith("Mozilla/") || userAgent.startsWith("Opera/")'
+
+  is-generic-robot-ua:
+    - 'userAgent.matches("compatible[;)]") && !userAgent.contains("Trident/")'
+    - 'userAgent.matches("\\+https?://")'
+    - 'userAgent.contains("@")'
+    - 'userAgent.matches("[bB]ot/[0-9]")'
+
+  is-tool-ua:
+    - 'userAgent.startsWith("python-requests/")'
+    - 'userAgent.startsWith("Python-urllib/")'
+    - 'userAgent.startsWith("python-httpx/")'
+    - 'userAgent.contains("aoihttp/")'
+    - 'userAgent.startsWith("http.rb/")'
+    - 'userAgent.startsWith("curl/")'
+    - 'userAgent.startsWith("Wget/")'
+    - 'userAgent.startsWith("libcurl/")'
+    - 'userAgent.startsWith("okhttp/")'
+    - 'userAgent.startsWith("Java/")'
+    - 'userAgent.startsWith("Apache-HttpClient//")'
+    - 'userAgent.startsWith("Go-http-client/")'
+    - 'userAgent.startsWith("node-fetch/")'
+    - 'userAgent.startsWith("reqwest/")'
+
+  # Checks to detect a headless chromium via headers only
+  is-headless-chromium:
+    - 'userAgent.contains("HeadlessChrome") || userAgent.contains("HeadlessChromium")'
+    - '"Sec-Ch-Ua" in headers && (headers["Sec-Ch-Ua"].contains("HeadlessChrome") || headers["Sec-Ch-Ua"].contains("HeadlessChromium"))'
+    #- '(userAgent.contains("Chrome/") || userAgent.contains("Chromium/")) && (!("Accept-Language" in headers) || !("Accept-Encoding" in headers))'

examples/snippets/networks-other.yml

@@ -0,0 +1,37 @@
+networks:
+#  aws-cloud:
+#    - url: https://ip-ranges.amazonaws.com/ip-ranges.json
+#      jq-path: '(.prefixes[] | select(has("ip_prefix")) | .ip_prefix), (.prefixes[] | select(has("ipv6_prefix")) | .ipv6_prefix)'
+#  google-cloud:
+#    - url: https://www.gstatic.com/ipranges/cloud.json
+#      jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
+#  oracle-cloud:
+#    - url: https://docs.oracle.com/en-us/iaas/tools/public_ip_ranges.json
+#      jq-path: '.regions[] | .cidrs[] | .cidr'
+#  azure-cloud:
+#    # todo: https://www.microsoft.com/en-us/download/details.aspx?id=56519 does not provide direct JSON
+#    - url: https://raw.githubusercontent.com/femueller/cloud-ip-ranges/refs/heads/master/microsoft-azure-ip-ranges.json
+#      jq-path: '.values[] | .properties.addressPrefixes[]'
+#
+#  digitalocean:
+#    - url: https://www.digitalocean.com/geo/google.csv
+#      regex: "(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+),"
+#  linode:
+#    - url: https://geoip.linode.com/
+#      regex: "(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+),"
+#  vultr:
+#    - url: "https://geofeed.constant.com/?json"
+#      jq-path: '.subnets[] | .ip_prefix'
+#  cloudflare:
+#    - url: https://www.cloudflare.com/ips-v4
+#      regex: "(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+/[0-9]+)"
+#    - url: https://www.cloudflare.com/ips-v6
+#      regex: "(?P<prefix>[0-9a-f:]+::/[0-9]+)"
+#
+#  icloud-private-relay:
+#    - url: https://mask-api.icloud.com/egress-ip-ranges.csv
+#      regex: "(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+),"
+#  tunnelbroker-relay:
+#    # HE Tunnelbroker
+#    - url: https://tunnelbroker.net/export/google
+#      regex: "(?P<prefix>([0-9a-f:]+::)/[0-9]+),"

go.mod

@@ -6,16 +6,15 @@ toolchain go1.24.2
 
 require (
 	codeberg.org/meta/gzipped/v2 v2.0.0-20231111234332-aa70c3194756
-	github.com/andybalholm/brotli v1.1.1
+	github.com/alphadose/haxmap v1.4.1
 	github.com/go-jose/go-jose/v4 v4.1.0
-	github.com/google/cel-go v0.24.1
+	github.com/goccy/go-yaml v1.17.1
+	github.com/google/cel-go v0.25.0
 	github.com/itchyny/gojq v0.12.17
-	github.com/klauspost/compress v1.18.0
 	github.com/pires/go-proxyproto v0.8.0
 	github.com/tetratelabs/wazero v1.9.0
 	github.com/yl2chen/cidranger v1.0.2
 	golang.org/x/crypto v0.37.0
-	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
@@ -27,7 +26,7 @@ require (
 	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
 	golang.org/x/net v0.39.0 // indirect
 	golang.org/x/text v0.24.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250414145226-207652e42e2e // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250422160041-2d3770c4ea7f // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250414145226-207652e42e2e // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250422160041-2d3770c4ea7f // indirect
 	google.golang.org/protobuf v1.36.6 // indirect
 )

go.sum

@@ -2,8 +2,8 @@ cel.dev/expr v0.23.1 h1:K4KOtPCJQjVggkARsjG9RWXP6O4R73aHeJMa/dmCQQg=
 cel.dev/expr v0.23.1/go.mod h1:hLPLo1W4QUmuYdA72RBX06QTs6MXw941piREPl3Yfiw=
 codeberg.org/meta/gzipped/v2 v2.0.0-20231111234332-aa70c3194756 h1:bDqEUEYt4UJy8mfLCZeJuXx+xNJvdqTbkE4Ci11NQYU=
 codeberg.org/meta/gzipped/v2 v2.0.0-20231111234332-aa70c3194756/go.mod h1:aJ/ghJW7viYfwZ6OizDst+uJgbb6r/Hvoqhmi1OPTTw=
-github.com/andybalholm/brotli v1.1.1 h1:PR2pgnyFznKEugtsUo0xLdDop5SKXd5Qf5ysW+7XdTA=
+github.com/alphadose/haxmap v1.4.1 h1:VtD6VCxUkjNIfJk/aWdYFfOzrRddDFjmvmRmILg7x8Q=
-github.com/andybalholm/brotli v1.1.1/go.mod h1:05ib4cKhjx3OQYUY22hTVd34Bc8upXjOLL2rKwwZBoA=
+github.com/alphadose/haxmap v1.4.1/go.mod h1:rjHw1IAqbxm0S3U5tD16GoKsiAd8FWx5BJ2IYqXwgmM=
 github.com/antlr4-go/antlr/v4 v4.13.1 h1:SqQKkuVZ+zWkMMNkjy5FZe5mr5WURWnlpmOuzYWrPrQ=
 github.com/antlr4-go/antlr/v4 v4.13.1/go.mod h1:GKmUxMtwp6ZgGwZSva4eWPC5mS6vUAmOABFgjdkM7Nw=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -11,8 +11,12 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-jose/go-jose/v4 v4.1.0 h1:cYSYxd3pw5zd2FSXk2vGdn9igQU2PS8MuxrCOCl0FdY=
 github.com/go-jose/go-jose/v4 v4.1.0/go.mod h1:GG/vqmYm3Von2nYiB2vGTXzdoNKE5tix5tuc6iAd+sw=
+github.com/goccy/go-yaml v1.17.1 h1:LI34wktB2xEE3ONG/2Ar54+/HJVBriAGJ55PHls4YuY=
+github.com/goccy/go-yaml v1.17.1/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
 github.com/google/cel-go v0.24.1 h1:jsBCtxG8mM5wiUJDSGUqU0K7Mtr3w7Eyv00rw4DiZxI=
 github.com/google/cel-go v0.24.1/go.mod h1:Hdf9TqOaTNSFQA1ybQaRqATVoK7m/zcf7IMhGXP5zI8=
+github.com/google/cel-go v0.25.0 h1:jsFw9Fhn+3y2kBbltZR4VEz5xKkcIFRPDnuEzAGv5GY=
+github.com/google/cel-go v0.25.0/go.mod h1:hjEb6r5SuOSlhCHmFoLzu8HGCERvIsDAbxDAyNU/MmI=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/itchyny/gojq v0.12.17 h1:8av8eGduDb5+rvEdaOO+zQUjA04MS0m3Ps8HiD+fceg=
@@ -21,8 +25,6 @@ github.com/itchyny/timefmt-go v0.1.6 h1:ia3s54iciXDdzWzwaVKXZPbiXzxxnv1SPGFfM/my
 github.com/itchyny/timefmt-go v0.1.6/go.mod h1:RRDZYC5s9ErkjQvTvvU7keJjxUYzIISJGxm9/mAERQg=
 github.com/kevinpollet/nego v0.0.0-20211010160919-a65cd48cee43 h1:Pdirg1gwhEcGjMLyuSxGn9664p+P8J9SrfMgpFwrDyg=
 github.com/kevinpollet/nego v0.0.0-20211010160919-a65cd48cee43/go.mod h1:ahLMuLCUyDdXqtqGyuwGev7/PGtO7r7ocvdwDuEN/3E=
-github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
-github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/pires/go-proxyproto v0.8.0 h1:5unRmEAPbHXHuLjDg01CxJWf91cw3lKHc/0xzKpXEe0=
 github.com/pires/go-proxyproto v0.8.0/go.mod h1:iknsfgnH8EkjrMeMyvfKByp9TiBZCKZM0jx2xmKqnVY=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -40,8 +42,6 @@ github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOf
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/tetratelabs/wazero v1.9.0 h1:IcZ56OuxrtaEz8UYNRHBrUa9bYeX9oVY93KspZZBf/I=
 github.com/tetratelabs/wazero v1.9.0/go.mod h1:TSbcXCfFP0L2FGkRPxHphadXPjo1T6W+CseNNY7EkjM=
-github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
-github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 github.com/yl2chen/cidranger v1.0.2 h1:lbOWZVCG1tCRX4u24kuM1Tb4nHqWkDxwLdoS+SevawU=
 github.com/yl2chen/cidranger v1.0.2/go.mod h1:9U1yz7WPYDwf0vpNWFaeRh0bjwz5RVgRy/9UEQfHl0g=
 golang.org/x/crypto v0.37.0 h1:kJNSjF/Xp7kU0iB2Z+9viTPMW4EqqsrywMXLJOOsXSE=
@@ -54,11 +54,14 @@ golang.org/x/text v0.24.0 h1:dd5Bzh4yt5KYA8f9CJHCP4FB4D51c2c6JvN37xJJkJ0=
 golang.org/x/text v0.24.0/go.mod h1:L8rBsPeo2pSS+xqN0d5u2ikmjtmoJbDBT1b7nHvFCdU=
 google.golang.org/genproto/googleapis/api v0.0.0-20250414145226-207652e42e2e h1:UdXH7Kzbj+Vzastr5nVfccbmFsmYNygVLSPk1pEfDoY=
 google.golang.org/genproto/googleapis/api v0.0.0-20250414145226-207652e42e2e/go.mod h1:085qFyf2+XaZlRdCgKNCIZ3afY2p4HHZdoIRpId8F4A=
+google.golang.org/genproto/googleapis/api v0.0.0-20250422160041-2d3770c4ea7f h1:tjZsroqekhC63+WMqzmWyW5Twj/ZfR5HAlpd5YQ1Vs0=
+google.golang.org/genproto/googleapis/api v0.0.0-20250422160041-2d3770c4ea7f/go.mod h1:Cd8IzgPo5Akum2c9R6FsXNaZbH3Jpa2gpHlW89FqlyQ=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20250414145226-207652e42e2e h1:ztQaXfzEXTmCBvbtWYRhJxW+0iJcz2qXfd38/e9l7bA=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20250414145226-207652e42e2e/go.mod h1:qQ0YXyHHx3XkvlzUtpXDkS29lDSafHMZBAZDc03LQ3A=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250422160041-2d3770c4ea7f h1:N/PrbTw4kdkqNRzVfWPrBekzLuarFREcbFOiOLkXon4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250422160041-2d3770c4ea7f/go.mod h1:qQ0YXyHHx3XkvlzUtpXDkS29lDSafHMZBAZDc03LQ3A=
 google.golang.org/protobuf v1.36.6 h1:z1NpPI8ku2WgiWnf+t9wTPsn6eP1L7ksHUlkfLvd9xY=
 google.golang.org/protobuf v1.36.6/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

lib/action/backend.go

@@ -0,0 +1,80 @@
+package action
+
+import (
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+	"regexp"
+)
+
+func init() {
+	Register[policy.RuleActionPROXY] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		params := ProxyDefaultSettings
+
+		if settings != nil {
+			ymlData, err := settings.MarshalYAML()
+			if err != nil {
+				return nil, err
+			}
+			err = yaml.Unmarshal(ymlData, &params)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		if params.Match != "" {
+			expr, err := regexp.Compile(params.Match)
+			if err != nil {
+				return nil, err
+			}
+
+			return Proxy{
+				Match:   expr,
+				Rewrite: params.Rewrite,
+				Backend: params.Backend,
+			}, nil
+		}
+
+		return Proxy{
+			Backend: params.Backend,
+		}, nil
+	}
+}
+
+var ProxyDefaultSettings = ProxySettings{}
+
+type ProxySettings struct {
+	Match   string `yaml:"proxy-match"`
+	Rewrite string `yaml:"proxy-rewrite"`
+	Backend string `yaml:"proxy-backend"`
+}
+
+type Proxy struct {
+	Match   *regexp.Regexp
+	Rewrite string
+	Backend string
+}
+
+func (a Proxy) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	data := challenge.RequestDataFromContext(r.Context())
+
+	backend := data.State.GetBackend(a.Backend)
+	if backend == nil {
+		return false, fmt.Errorf("backend for %s not found", a.Backend)
+	}
+
+	if a.Match != nil {
+		// rewrite query
+		r.URL.Path = a.Match.ReplaceAllString(r.URL.Path, a.Rewrite)
+	}
+
+	// set headers, ignore reply
+	_ = done()
+	backend.ServeHTTP(w, r)
+
+	return false, nil
+}

lib/action/block.go

@@ -0,0 +1,36 @@
+package action
+
+import (
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+func init() {
+	Register[policy.RuleActionBLOCK] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return Block{
+			Code:     http.StatusForbidden,
+			RuleHash: ruleHash,
+		}, nil
+	}
+}
+
+type Block struct {
+	Code     int
+	RuleHash string
+}
+
+func (a Block) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	logger.Info("request blocked")
+	data := challenge.RequestDataFromContext(r.Context())
+
+	w.Header().Set("Content-Type", "text/plain")
+	w.Header().Set("Connection", "close")
+	w.WriteHeader(a.Code)
+	_, _ = w.Write([]byte(fmt.Errorf("access blocked: blocked by administrative rule %s/%s", data.Id.String(), a.RuleHash).Error()))
+
+	return false, nil
+}

lib/action/challenge.go

@@ -0,0 +1,178 @@
+package action
+
+import (
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+	"strings"
+)
+
+func init() {
+	i := func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node, cont bool) (Handler, error) {
+		params := ChallengeDefaultSettings
+
+		if settings != nil {
+			ymlData, err := settings.MarshalYAML()
+			if err != nil {
+				return nil, err
+			}
+			err = yaml.Unmarshal(ymlData, &params)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		if params.Code == 0 {
+			params.Code = state.Settings().ChallengeResponseCode
+		}
+
+		var regs []*challenge.Registration
+		for _, regName := range params.Challenges {
+			if reg, ok := state.GetChallengeByName(regName); ok {
+				regs = append(regs, reg)
+			} else {
+				return nil, fmt.Errorf("challenge %s not found", regName)
+			}
+		}
+
+		if len(regs) == 0 {
+			return nil, fmt.Errorf("no registered challenges found in rule %s", ruleName)
+		}
+
+		passHandler, ok := Register[policy.RuleAction(strings.ToUpper(params.PassAction))]
+		if !ok {
+			return nil, fmt.Errorf("unknown pass action %s", params.PassAction)
+		}
+
+		passActionHandler, err := passHandler(state, ruleName, ruleHash, params.PassSettings)
+		if err != nil {
+			return nil, err
+		}
+
+		failHandler, ok := Register[policy.RuleAction(strings.ToUpper(params.FailAction))]
+		if !ok {
+			return nil, fmt.Errorf("unknown pass action %s", params.FailAction)
+		}
+
+		failActionHandler, err := failHandler(state, ruleName, ruleHash, params.FailSettings)
+		if err != nil {
+			return nil, err
+		}
+
+		return Challenge{
+			RuleHash:   ruleHash,
+			Code:       params.Code,
+			Continue:   cont,
+			Challenges: regs,
+
+			PassAction: passActionHandler,
+			FailAction: failActionHandler,
+		}, nil
+	}
+	Register[policy.RuleActionCHALLENGE] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return i(state, ruleName, ruleHash, settings, false)
+	}
+	Register[policy.RuleActionCHECK] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return i(state, ruleName, ruleHash, settings, true)
+	}
+}
+
+var ChallengeDefaultSettings = ChallengeSettings{
+	PassAction: string(policy.RuleActionPASS),
+	FailAction: string(policy.RuleActionDENY),
+}
+
+type ChallengeSettings struct {
+	Code       int      `yaml:"http-code"`
+	Challenges []string `yaml:"challenges"`
+
+	PassAction   string   `yaml:"pass"`
+	PassSettings ast.Node `yaml:"pass-settings"`
+
+	// FailAction Executed in case no challenges match or
+	FailAction   string   `yaml:"fail"`
+	FailSettings ast.Node `yaml:"fail-settings"`
+}
+
+type Challenge struct {
+	RuleHash   string
+	Code       int
+	Continue   bool
+	Challenges []*challenge.Registration
+
+	PassAction Handler
+	FailAction Handler
+}
+
+func (a Challenge) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	data := challenge.RequestDataFromContext(r.Context())
+	for _, reg := range a.Challenges {
+		if data.HasValidChallenge(reg.Id()) {
+			if a.Continue {
+				return true, nil
+			}
+
+			// we passed!
+			return a.PassAction.Handle(logger.With("challenge", reg.Name), w, r, done)
+		}
+	}
+	// none matched, issue challenges in sequential priority
+	for _, reg := range a.Challenges {
+		result := data.ChallengeVerify[reg.Id()]
+		state := data.ChallengeState[reg.Id()]
+		if result.Ok() || result == challenge.VerifyResultSkip || state == challenge.VerifyStatePass {
+			// skip already ok'd challenges for some reason (TODO: why)
+			// also skip skipped challenges due to preconditions
+			continue
+		}
+
+		expiry := data.Expiration(reg.Duration)
+		key := challenge.GetChallengeKeyForRequest(data.State, reg, expiry, r)
+		data.State.ChallengeIssued(r, reg, r.URL.String(), logger)
+		result = reg.IssueChallenge(w, r, key, expiry)
+		data.ChallengeVerify[reg.Id()] = result
+		data.ChallengeState[reg.Id()] = challenge.VerifyStatePass
+		switch result {
+		case challenge.VerifyResultOK:
+			data.State.ChallengePassed(r, reg, r.URL.String(), logger)
+			if a.Continue {
+				return true, nil
+			}
+
+			return a.PassAction.Handle(logger.With("challenge", reg.Name), w, r, done)
+		case challenge.VerifyResultNotOK:
+			// we have had the challenge checked, but it's not ok!
+			// safe to continue
+			continue
+		case challenge.VerifyResultFail:
+			err := fmt.Errorf("challenge %s failed on issuance", reg.Name)
+			data.State.ChallengeFailed(r, reg, err, r.URL.String(), logger)
+
+			if reg.Class == challenge.ClassTransparent {
+				// allow continuing transparent challenges
+				continue
+			}
+
+			return a.FailAction.Handle(logger, w, r, done)
+		case challenge.VerifyResultNone:
+			// challenge was issued
+			if reg.Class == challenge.ClassTransparent {
+				// allow continuing transparent challenges
+				continue
+			}
+			// we cannot continue after issuance
+			return false, nil
+
+		case challenge.VerifyResultSkip:
+			// continue onto next one due to precondition
+			continue
+		}
+	}
+
+	// nothing matched, execute default action
+	return a.FailAction.Handle(logger, w, r, done)
+}

lib/action/code.go

@@ -0,0 +1,47 @@
+package action
+
+import (
+	"errors"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+func init() {
+	Register[policy.RuleActionCODE] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		params := CodeDefaultSettings
+
+		if settings != nil {
+			ymlData, err := settings.MarshalYAML()
+			if err != nil {
+				return nil, err
+			}
+			err = yaml.Unmarshal(ymlData, &params)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		if params.Code == 0 {
+			return nil, errors.New("http-code not set")
+		}
+
+		return Code(params.Code), nil
+	}
+}
+
+var CodeDefaultSettings = CodeSettings{}
+
+type CodeSettings struct {
+	Code int `yaml:"http-code"`
+}
+
+type Code int
+
+func (a Code) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	w.WriteHeader(int(a))
+	return false, nil
+}

lib/action/deny.go

@@ -0,0 +1,31 @@
+package action
+
+import (
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+func init() {
+	Register[policy.RuleActionDENY] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return Deny{
+			Code:     http.StatusForbidden,
+			RuleHash: ruleHash,
+		}, nil
+	}
+}
+
+type Deny struct {
+	Code     int
+	RuleHash string
+}
+
+func (a Deny) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	logger.Info("request denied")
+	data := challenge.RequestDataFromContext(r.Context())
+	data.State.ErrorPage(w, r, a.Code, fmt.Errorf("access denied: denied by administrative rule %s/%s", data.Id.String(), a.RuleHash), "")
+	return false, nil
+}

lib/action/drop.go

@@ -0,0 +1,39 @@
+package action
+
+import (
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+func init() {
+	Register[policy.RuleActionDROP] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return Drop{}, nil
+	}
+}
+
+type Drop struct {
+}
+
+func (a Drop) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	logger.Info("request dropped")
+
+	if hj, ok := w.(http.Hijacker); ok {
+		if conn, _, err := hj.Hijack(); err == nil {
+			// drop without sending data
+			_ = conn.Close()
+			return false, nil
+		}
+	}
+
+	// fallback
+
+	w.Header().Set("Content-Type", "text/plain")
+	w.Header().Set("Content-Length", "0")
+	w.Header().Set("Connection", "close")
+	w.WriteHeader(http.StatusForbidden)
+
+	return false, nil
+}

lib/action/none.go

@@ -0,0 +1,21 @@
+package action
+
+import (
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+func init() {
+	Register[policy.RuleActionNONE] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return None{}, nil
+	}
+}
+
+type None struct{}
+
+func (a None) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	return true, nil
+}

lib/action/pass.go

@@ -0,0 +1,23 @@
+package action
+
+import (
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+func init() {
+	Register[policy.RuleActionPASS] = func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error) {
+		return Pass{}, nil
+	}
+}
+
+type Pass struct{}
+
+func (a Pass) Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error) {
+	logger.Debug("request passed")
+	done().ServeHTTP(w, r)
+	return false, nil
+}

lib/action/register.go

@@ -0,0 +1,20 @@
+package action
+
+import (
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/goccy/go-yaml/ast"
+	"log/slog"
+	"net/http"
+)
+
+type Handler interface {
+	// Handle An incoming request.
+	// If next is true, continue processing
+	// If next is false, stop processing. If passing to a backend, done() must be called beforehand to set headers.
+	Handle(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() (backend http.Handler)) (next bool, err error)
+}
+
+type NewFunc func(state challenge.StateInterface, ruleName, ruleHash string, settings ast.Node) (Handler, error)
+
+var Register = make(map[policy.RuleAction]NewFunc)

lib/challenge.go

@@ -1,125 +1,13 @@
 package lib
 
 import (
-	"crypto/sha256"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/cookie"
-	"encoding/binary"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/dnsbl"
-	"encoding/hex"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/http"
-	"errors"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/preload-link"
-	"github.com/go-jose/go-jose/v4/jwt"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/refresh"
-	"net"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/resource-load"
-	"net/http"
+	_ "git.gammaspectra.live/git/go-away/lib/challenge/wasm"
-	"strings"
-	"time"
 )
 
-type ChallengeInformation struct {
+// This file loads embedded challenge runtimes so their init() is called
-	Name   string `json:"name"`
-	Key    []byte `json:"key"`
-	Result []byte `json:"result"`
-
-	Expiry    *jwt.NumericDate `json:"exp,omitempty"`
-	NotBefore *jwt.NumericDate `json:"nbf,omitempty"`
-	IssuedAt  *jwt.NumericDate `json:"iat,omitempty"`
-}
-
-func getRequestScheme(r *http.Request) string {
-	if proto := r.Header.Get("X-Forwarded-Proto"); proto == "http" || proto == "https" {
-		return proto
-	}
-
-	if r.TLS != nil {
-		return "https"
-	}
-
-	return "http"
-}
-
-func getRequestAddress(r *http.Request, clientHeader string) net.IP {
-	var ipStr string
-	if clientHeader != "" {
-		ipStr = r.Header.Get(clientHeader)
-	}
-	if ipStr != "" {
-		// handle X-Forwarded-For
-		ipStr = strings.Split(ipStr, ",")[0]
-	}
-
-	// fallback
-	if ipStr == "" {
-		parts := strings.Split(r.RemoteAddr, ":")
-		// drop port
-		ipStr = strings.Join(parts[:len(parts)-1], ":")
-	}
-	ipStr = strings.Trim(ipStr, "[]")
-	return net.ParseIP(ipStr)
-}
-
-type ChallengeKey []byte
-
-const ChallengeKeySize = sha256.Size
-
-func (k *ChallengeKey) Set(flags ChallengeKeyFlags) {
-	(*k)[0] |= uint8(flags)
-}
-func (k *ChallengeKey) Get(flags ChallengeKeyFlags) ChallengeKeyFlags {
-	return ChallengeKeyFlags((*k)[0] & uint8(flags))
-}
-func (k *ChallengeKey) Unset(flags ChallengeKeyFlags) {
-	(*k)[0] = (*k)[0] & ^(uint8(flags))
-}
-
-type ChallengeKeyFlags uint8
-
-const (
-	ChallengeKeyFlagIsIPv4 = ChallengeKeyFlags(1 << iota)
-)
-
-func ChallengeKeyFromString(s string) (ChallengeKey, error) {
-	b, err := hex.DecodeString(s)
-	if err != nil {
-		return nil, err
-	}
-	if len(b) != ChallengeKeySize {
-		return nil, errors.New("invalid challenge key")
-	}
-	return ChallengeKey(b), nil
-}
-
-func (state *State) GetChallengeKeyForRequest(challengeName string, until time.Time, r *http.Request) ChallengeKey {
-	data := RequestDataFromContext(r.Context())
-	address := data.RemoteAddress
-	hasher := sha256.New()
-	hasher.Write([]byte("challenge\x00"))
-	hasher.Write([]byte(challengeName))
-	hasher.Write([]byte{0})
-	hasher.Write(address.To16())
-	hasher.Write([]byte{0})
-
-	// specific headers
-	for _, k := range []string{
-		"Accept-Language",
-		// General browser information
-		"User-Agent",
-		// TODO: not sent in preload
-		//"Sec-Ch-Ua",
-		//"Sec-Ch-Ua-Platform",
-	} {
-		hasher.Write([]byte(r.Header.Get(k)))
-		hasher.Write([]byte{0})
-	}
-	hasher.Write([]byte{0})
-	_ = binary.Write(hasher, binary.LittleEndian, until.UTC().Unix())
-	hasher.Write([]byte{0})
-	hasher.Write(state.publicKey)
-	hasher.Write([]byte{0})
-
-	sum := ChallengeKey(hasher.Sum(nil))
-
-	sum[0] = 0
-
-	if address.To4() != nil {
-		// Is IPv4, mark
-		sum.Set(ChallengeKeyFlagIsIPv4)
-	}
-	return ChallengeKey(sum)
-}

lib/challenge/awaiter.go

@@ -0,0 +1,47 @@
+package challenge
+
+import (
+	"context"
+	"github.com/alphadose/haxmap"
+	"sync/atomic"
+)
+
+type awaiterCallback func(result VerifyResult)
+
+type Awaiter[K ~string | ~int64 | ~uint64] haxmap.Map[K, awaiterCallback]
+
+func NewAwaiter[T ~string | ~int64 | ~uint64]() *Awaiter[T] {
+	return (*Awaiter[T])(haxmap.New[T, awaiterCallback]())
+}
+
+func (a *Awaiter[T]) Await(key T, ctx context.Context) VerifyResult {
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	var result atomic.Int64
+
+	a.m().Set(key, func(receivedResult VerifyResult) {
+		result.Store(int64(receivedResult))
+		cancel()
+	})
+	// cleanup
+	defer a.m().Del(key)
+
+	<-ctx.Done()
+
+	return VerifyResult(result.Load())
+}
+
+func (a *Awaiter[T]) Solve(key T, result VerifyResult) {
+	if f, ok := a.m().GetAndDel(key); ok && f != nil {
+		f(result)
+	}
+}
+
+func (a *Awaiter[T]) m() *haxmap.Map[T, awaiterCallback] {
+	return (*haxmap.Map[T, awaiterCallback])(a)
+}
+
+func (a *Awaiter[T]) Close() error {
+	return nil
+}

lib/challenge/cookie/cookie.go

@@ -0,0 +1,38 @@
+package cookie
+
+import (
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/utils"
+	"github.com/goccy/go-yaml/ast"
+	"net/http"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes[Key] = FillRegistration
+}
+
+const Key = "cookie"
+
+func FillRegistration(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	reg.Class = challenge.ClassBlocking
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+		token, err := reg.IssueChallengeToken(state.PrivateKey(), key, nil, expiry, true)
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		utils.SetCookie(challenge.RequestDataFromContext(r.Context()).CookiePrefix+reg.Name, token, expiry, w, r)
+
+		uri, err := challenge.RedirectUrl(r, reg)
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		http.Redirect(w, r, uri.String(), http.StatusTemporaryRedirect)
+		return challenge.VerifyResultNone
+	}
+
+	return nil
+}

lib/challenge/data.go

@@ -0,0 +1,190 @@
+package challenge
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/condition"
+	"git.gammaspectra.live/git/go-away/utils"
+	"github.com/google/cel-go/cel"
+	"github.com/google/cel-go/common/types"
+	"github.com/google/cel-go/common/types/traits"
+	"net"
+	"net/http"
+	"net/textproto"
+	"time"
+)
+
+type requestDataContextKey struct {
+}
+
+func RequestDataFromContext(ctx context.Context) *RequestData {
+	return ctx.Value(requestDataContextKey{}).(*RequestData)
+}
+
+type RequestId [16]byte
+
+func (id RequestId) String() string {
+	return hex.EncodeToString(id[:])
+}
+
+type RequestData struct {
+	Id              RequestId
+	Time            time.Time
+	ChallengeVerify map[Id]VerifyResult
+	ChallengeState  map[Id]VerifyState
+	RemoteAddress   net.IP
+	State           StateInterface
+	CookiePrefix    string
+
+	r *http.Request
+
+	fp     map[string]string
+	header traits.Mapper
+	query  traits.Mapper
+}
+
+func CreateRequestData(r *http.Request, state StateInterface) (*http.Request, *RequestData) {
+
+	var data RequestData
+	// generate random id, todo: is this fast?
+	_, _ = rand.Read(data.Id[:])
+	data.RemoteAddress = utils.GetRequestAddress(r, state.Settings().ClientIpHeader)
+	data.ChallengeVerify = make(map[Id]VerifyResult, len(state.GetChallenges()))
+	data.ChallengeState = make(map[Id]VerifyState, len(state.GetChallenges()))
+	data.Time = time.Now().UTC()
+	data.State = state
+	data.r = r
+
+	data.fp = make(map[string]string, 2)
+
+	if fp := utils.GetTLSFingerprint(r); fp != nil {
+		if ja3nPtr := fp.JA3N(); ja3nPtr != nil {
+			ja3n := ja3nPtr.String()
+			data.fp["ja3n"] = ja3n
+			r.Header.Set("X-TLS-Fingerprint-JA3N", ja3n)
+		}
+		if ja4Ptr := fp.JA4(); ja4Ptr != nil {
+			ja4 := ja4Ptr.String()
+			data.fp["ja4"] = ja4
+			r.Header.Set("X-TLS-Fingerprint-JA4", ja4)
+		}
+	}
+
+	data.query = condition.NewValuesMap(r.URL.Query())
+	data.header = condition.NewMIMEMap(textproto.MIMEHeader(r.Header))
+
+	sum := sha256.New()
+	sum.Write([]byte(r.Host))
+	sum.Write([]byte{0})
+	sum.Write(state.PublicKey())
+	sum.Write([]byte{0})
+	data.CookiePrefix = utils.CookiePrefix + hex.EncodeToString(sum.Sum(nil)[:4]) + "-"
+
+	r = r.WithContext(context.WithValue(r.Context(), requestDataContextKey{}, &data))
+
+	return r, &data
+}
+
+func (d *RequestData) ResolveName(name string) (any, bool) {
+	switch name {
+	case "host":
+		return d.r.Host, true
+	case "method":
+		return d.r.Method, true
+	case "remoteAddress":
+		return d.RemoteAddress, true
+	case "userAgent":
+		return d.r.UserAgent(), true
+	case "path":
+		return d.r.URL.Path, true
+	case "query":
+		return d.query, true
+	case "headers":
+		return d.header, true
+	case "fp":
+		return d.fp, true
+	default:
+		return nil, false
+	}
+}
+
+func (d *RequestData) Parent() cel.Activation {
+	return nil
+}
+
+func (d *RequestData) EvaluateChallenges(w http.ResponseWriter, r *http.Request) {
+	q := r.URL.Query()
+	var issuedChallenge string
+	if q.Has(QueryArgChallenge) {
+		issuedChallenge = q.Get(QueryArgChallenge)
+	}
+	for _, reg := range d.State.GetChallenges() {
+		key := GetChallengeKeyForRequest(d.State, reg, d.Expiration(reg.Duration), r)
+		verifyResult, verifyState, err := reg.VerifyChallengeToken(d.State.PublicKey(), key, r)
+		if err != nil && !errors.Is(err, http.ErrNoCookie) {
+			// clear invalid cookie
+			utils.ClearCookie(d.CookiePrefix+reg.Name, w, r)
+		}
+
+		// prevent evaluating the challenge if not solved
+		if !verifyResult.Ok() && reg.Condition != nil {
+			out, _, err := reg.Condition.Eval(d)
+			// verify eligibility
+			if err != nil {
+				d.State.Logger(r).Error(err.Error(), "challenge", reg.Name)
+			} else if out != nil && out.Type() == types.BoolType {
+				if out.Equal(types.True) != types.True {
+					// skip challenge match due to precondition!
+					verifyResult = VerifyResultSkip
+					continue
+				}
+			}
+		}
+
+		if !verifyResult.Ok() && issuedChallenge == reg.Name {
+			// we issued the challenge, must skip to prevent loops
+			verifyResult = VerifyResultSkip
+		}
+		d.ChallengeVerify[reg.Id()] = verifyResult
+		d.ChallengeState[reg.Id()] = verifyState
+	}
+
+	if d.State.Settings().BackendIpHeader != "" {
+		if d.State.Settings().ClientIpHeader != "" {
+			r.Header.Del(d.State.Settings().ClientIpHeader)
+		}
+		r.Header.Set(d.State.Settings().BackendIpHeader, d.RemoteAddress.String())
+	}
+
+	// send these to client so we consistently get the headers
+	//w.Header().Set("Accept-CH", "Sec-CH-UA, Sec-CH-UA-Platform")
+	//w.Header().Set("Critical-CH", "Sec-CH-UA, Sec-CH-UA-Platform")
+}
+
+func (d *RequestData) Expiration(duration time.Duration) time.Time {
+	return d.Time.Add(duration).Round(duration)
+}
+
+func (d *RequestData) HasValidChallenge(id Id) bool {
+	return d.ChallengeVerify[id].Ok()
+}
+
+func (d *RequestData) Headers(headers http.Header) {
+	headers.Set("X-Away-Id", d.Id.String())
+
+	for id, result := range d.ChallengeVerify {
+		if result.Ok() {
+			c, ok := d.State.GetChallenge(id)
+			if !ok {
+				panic("challenge not found")
+			}
+
+			headers.Set(fmt.Sprintf("X-Away-Challenge-%s-Result", c.Name), result.String())
+			headers.Set(fmt.Sprintf("X-Away-Challenge-%s-State", c.Name), d.ChallengeState[id].String())
+		}
+	}
+}

lib/challenge/dnsbl/dnsbl.go

@@ -0,0 +1,149 @@
+package http
+
+import (
+	"context"
+	"errors"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/utils"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"net"
+	"net/http"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes[Key] = FillRegistration
+}
+
+const Key = "dnsbl"
+
+type Parameters struct {
+	VerifyProbability float64       `yaml:"verify-probability"`
+	Host              string        `yaml:"dnsbl-host"`
+	Timeout           time.Duration `yaml:"dnsbl-timeout"`
+	Decay             time.Duration `yaml:"dnsbl-decay"`
+}
+
+var DefaultParameters = Parameters{
+	VerifyProbability: 0.10,
+	Timeout:           time.Second * 1,
+	Decay:             time.Hour * 1,
+	Host:              "dnsbl.dronebl.org",
+}
+
+func lookup(ctx context.Context, decay, timeout time.Duration, dnsbl *utils.DNSBL, decayMap *utils.DecayMap[[net.IPv6len]byte, utils.DNSBLResponse], ip net.IP) (utils.DNSBLResponse, error) {
+	var key [net.IPv6len]byte
+	copy(key[:], ip.To16())
+
+	result, ok := decayMap.Get(key)
+	if ok {
+		return result, nil
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	result, err := dnsbl.Lookup(ctx, ip)
+	if err != nil {
+
+	}
+	decayMap.Set(key, result, decay)
+
+	return result, err
+}
+
+type closer chan struct{}
+
+func (c closer) Close() error {
+	select {
+	case <-c:
+	default:
+		close(c)
+	}
+	return nil
+}
+
+func FillRegistration(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	params := DefaultParameters
+
+	if parameters != nil {
+		ymlData, err := parameters.MarshalYAML()
+		if err != nil {
+			return err
+		}
+		err = yaml.Unmarshal(ymlData, &params)
+		if err != nil {
+			return err
+		}
+	}
+
+	if params.Host == "" {
+		return errors.New("empty host")
+	}
+
+	reg.Class = challenge.ClassTransparent
+
+	if params.VerifyProbability <= 0 {
+		//20% default
+		params.VerifyProbability = 0.20
+	} else if params.VerifyProbability > 1.0 {
+		params.VerifyProbability = 1.0
+	}
+	reg.VerifyProbability = params.VerifyProbability
+
+	decayMap := utils.NewDecayMap[[net.IPv6len]byte, utils.DNSBLResponse]()
+
+	dnsbl := utils.NewDNSBL(params.Host, &net.Resolver{
+		PreferGo: true,
+	})
+
+	ob := make(closer)
+
+	go func() {
+		ticker := time.NewTicker(params.Timeout / 3)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ticker.C:
+				decayMap.Decay()
+			case <-ob:
+				return
+			}
+		}
+	}()
+
+	// allow freeing the ticker/decay map
+	reg.Object = ob
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+
+		data := challenge.RequestDataFromContext(r.Context())
+
+		result, err := lookup(r.Context(), params.Decay, params.Timeout, dnsbl, decayMap, data.RemoteAddress)
+		if err != nil {
+			data.State.Logger(r).Debug("dnsbl lookup failed", "address", data.RemoteAddress.String(), "result", result, "err", err)
+		}
+
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		if result.Bad() {
+			token, err := reg.IssueChallengeToken(state.PrivateKey(), key, nil, expiry, false)
+			if err != nil {
+				return challenge.VerifyResultFail
+			}
+			utils.SetCookie(data.CookiePrefix+reg.Name, token, expiry, w, r)
+			return challenge.VerifyResultNotOK
+		} else {
+			token, err := reg.IssueChallengeToken(state.PrivateKey(), key, nil, expiry, true)
+			if err != nil {
+				return challenge.VerifyResultFail
+			}
+			utils.SetCookie(data.CookiePrefix+reg.Name, token, expiry, w, r)
+			return challenge.VerifyResultOK
+		}
+	}
+
+	return nil
+}

lib/challenge/helper.go

@@ -0,0 +1,166 @@
+package challenge
+
+import (
+	"crypto/subtle"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"git.gammaspectra.live/git/go-away/utils"
+	"net/http"
+	"net/url"
+)
+
+func NewKeyVerifier() (verify VerifyFunc, issue func(key Key) string) {
+	return func(key Key, token []byte, r *http.Request) (VerifyResult, error) {
+			expectedKey, err := hex.DecodeString(string(token))
+			if err != nil {
+				return VerifyResultFail, err
+			}
+			if subtle.ConstantTimeCompare(key[:], expectedKey) == 1 {
+				return VerifyResultOK, nil
+			}
+			return VerifyResultFail, errors.New("invalid token")
+		}, func(key Key) string {
+			return hex.EncodeToString(key[:])
+		}
+}
+
+const (
+	QueryArgPrefix    = "__goaway"
+	QueryArgReferer   = QueryArgPrefix + "_referer"
+	QueryArgRedirect  = QueryArgPrefix + "_redirect"
+	QueryArgRequestId = QueryArgPrefix + "_id"
+	QueryArgChallenge = QueryArgPrefix + "_challenge"
+	QueryArgToken     = QueryArgPrefix + "_token"
+)
+
+const MakeChallengeUrlSuffix = "/make-challenge"
+const VerifyChallengeUrlSuffix = "/verify-challenge"
+
+func GetVerifyInformation(r *http.Request, reg *Registration) (requestId RequestId, redirect, token string, err error) {
+
+	q := r.URL.Query()
+
+	if q.Get(QueryArgChallenge) != reg.Name {
+		return RequestId{}, "", "", fmt.Errorf("unexpected challenge: got %s", q.Get(QueryArgChallenge))
+	}
+
+	requestIdHex := q.Get(QueryArgRequestId)
+
+	if len(requestId) != hex.DecodedLen(len(requestIdHex)) {
+		return RequestId{}, "", "", errors.New("invalid request id")
+	}
+	n, err := hex.Decode(requestId[:], []byte(requestIdHex))
+	if err != nil {
+		return RequestId{}, "", "", err
+	} else if n != len(requestId) {
+		return RequestId{}, "", "", errors.New("invalid request id")
+	}
+
+	token = q.Get(QueryArgToken)
+	redirect, err = utils.EnsureNoOpenRedirect(q.Get(QueryArgRedirect))
+	if err != nil {
+		return RequestId{}, "", "", err
+	}
+	return
+}
+
+func VerifyUrl(r *http.Request, reg *Registration, token string) (*url.URL, error) {
+
+	redirectUrl, err := RedirectUrl(r, reg)
+	if err != nil {
+		return nil, err
+	}
+
+	uri := new(url.URL)
+	uri.Path = reg.Path + VerifyChallengeUrlSuffix
+
+	data := RequestDataFromContext(r.Context())
+	values := uri.Query()
+	values.Set(QueryArgRequestId, data.Id.String())
+	values.Set(QueryArgRedirect, redirectUrl.String())
+	values.Set(QueryArgToken, token)
+	values.Set(QueryArgChallenge, reg.Name)
+	uri.RawQuery = values.Encode()
+
+	return uri, nil
+}
+
+func RedirectUrl(r *http.Request, reg *Registration) (*url.URL, error) {
+	uri, err := url.ParseRequestURI(r.URL.String())
+	if err != nil {
+		return nil, err
+	}
+
+	data := RequestDataFromContext(r.Context())
+	values := uri.Query()
+	values.Set(QueryArgRequestId, data.Id.String())
+	values.Set(QueryArgReferer, r.Referer())
+	values.Set(QueryArgChallenge, reg.Name)
+	uri.RawQuery = values.Encode()
+
+	return uri, nil
+}
+
+func VerifyHandlerChallengeResponseFunc(state StateInterface, data *RequestData, w http.ResponseWriter, r *http.Request, verifyResult VerifyResult, err error, redirect string) {
+	if err != nil {
+		state.ErrorPage(w, r, http.StatusBadRequest, err, redirect)
+		return
+	} else if !verifyResult.Ok() {
+		state.ErrorPage(w, r, http.StatusForbidden, fmt.Errorf("access denied: failed challenge"), redirect)
+		return
+	}
+	http.Redirect(w, r, redirect, http.StatusTemporaryRedirect)
+}
+
+func VerifyHandlerFunc(state StateInterface, reg *Registration, verify VerifyFunc, responseFunc func(state StateInterface, data *RequestData, w http.ResponseWriter, r *http.Request, verifyResult VerifyResult, err error, redirect string)) http.HandlerFunc {
+	if verify == nil {
+		verify = reg.Verify
+	}
+	if responseFunc == nil {
+		responseFunc = VerifyHandlerChallengeResponseFunc
+	}
+	return func(w http.ResponseWriter, r *http.Request) {
+		data := RequestDataFromContext(r.Context())
+		requestId, redirect, token, err := GetVerifyInformation(r, reg)
+		if err != nil {
+			state.ChallengeFailed(r, reg, err, "", nil)
+			responseFunc(state, data, w, r, VerifyResultFail, fmt.Errorf("internal error: %w", err), "")
+			return
+		}
+		data.Id = requestId
+
+		err = func() (err error) {
+			expiration := data.Expiration(reg.Duration)
+			key := GetChallengeKeyForRequest(state, reg, expiration, r)
+
+			verifyResult, err := verify(key, []byte(token), r)
+			if err != nil {
+				return err
+			} else if !verifyResult.Ok() {
+				utils.ClearCookie(data.CookiePrefix+reg.Name, w, r)
+				state.ChallengeFailed(r, reg, nil, redirect, nil)
+				responseFunc(state, data, w, r, verifyResult, nil, redirect)
+				return nil
+			}
+
+			challengeToken, err := reg.IssueChallengeToken(state.PrivateKey(), key, []byte(token), expiration, true)
+			if err != nil {
+				utils.ClearCookie(data.CookiePrefix+reg.Name, w, r)
+			} else {
+				utils.SetCookie(data.CookiePrefix+reg.Name, challengeToken, expiration, w, r)
+			}
+			data.ChallengeVerify[reg.id] = verifyResult
+			state.ChallengePassed(r, reg, redirect, nil)
+
+			responseFunc(state, data, w, r, verifyResult, nil, redirect)
+			return nil
+		}()
+		if err != nil {
+			utils.ClearCookie(data.CookiePrefix+reg.Name, w, r)
+			state.ChallengeFailed(r, reg, err, redirect, nil)
+			responseFunc(state, data, w, r, VerifyResultFail, fmt.Errorf("access denied: error in challenge %s: %w", reg.Name, err), redirect)
+			return
+		}
+	}
+}

lib/challenge/http/http.go

@@ -0,0 +1,160 @@
+package http
+
+import (
+	"crypto/sha256"
+	"crypto/subtle"
+	"errors"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/utils"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"io"
+	"net/http"
+	"slices"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes[Key] = FillRegistration
+}
+
+const Key = "http"
+
+type Parameters struct {
+	VerifyProbability float64 `yaml:"verify-probability"`
+
+	HttpMethod string `yaml:"http-method"`
+	HttpCode   int    `yaml:"http-code"`
+	HttpCookie string `yaml:"http-cookie"`
+	Url        string `yaml:"http-url"`
+}
+
+var DefaultParameters = Parameters{
+	VerifyProbability: 0.20,
+	HttpMethod:        http.MethodGet,
+	HttpCode:          http.StatusOK,
+}
+
+func FillRegistration(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	params := DefaultParameters
+
+	if parameters != nil {
+		ymlData, err := parameters.MarshalYAML()
+		if err != nil {
+			return err
+		}
+		err = yaml.Unmarshal(ymlData, &params)
+		if err != nil {
+			return err
+		}
+	}
+
+	if params.Url == "" {
+		return errors.New("empty url")
+	}
+
+	reg.Class = challenge.ClassTransparent
+
+	bindAuthValue := func(key challenge.Key, r *http.Request) ([]byte, error) {
+		var cookieValue string
+		if cookie, err := r.Cookie(params.HttpCookie); err != nil || cookie == nil {
+			// skip check if we don't have cookie or it's expired
+			return nil, http.ErrNoCookie
+		} else {
+			cookieValue = cookie.Value
+		}
+
+		// bind hash of cookie contents
+		sum := sha256.New()
+		sum.Write([]byte(cookieValue))
+		sum.Write([]byte{0})
+		sum.Write(key[:])
+		return sum.Sum(nil), nil
+	}
+
+	if params.VerifyProbability <= 0 {
+		//20% default
+		params.VerifyProbability = 0.20
+	} else if params.VerifyProbability > 1.0 {
+		params.VerifyProbability = 1.0
+	}
+	reg.VerifyProbability = params.VerifyProbability
+
+	if params.HttpCookie != "" {
+		// re-verify the cookie value
+		// TODO: configure to verify with backend
+		reg.Verify = func(key challenge.Key, token []byte, r *http.Request) (challenge.VerifyResult, error) {
+			sum, err := bindAuthValue(key, r)
+			if err != nil {
+				return challenge.VerifyResultFail, err
+			}
+			if subtle.ConstantTimeCompare(sum, token) == 1 {
+				return challenge.VerifyResultOK, nil
+			}
+			return challenge.VerifyResultFail, errors.New("invalid cookie value")
+		}
+	}
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+		var sum []byte
+		if params.HttpCookie != "" {
+			if c, err := r.Cookie(params.HttpCookie); err != nil || c == nil {
+				// skip check if we don't have cookie or it's expired
+				return challenge.VerifyResultSkip
+			} else {
+				sum, err = bindAuthValue(key, r)
+				if err != nil {
+					return challenge.VerifyResultFail
+				}
+			}
+		}
+
+		request, err := http.NewRequest(params.HttpMethod, params.Url, nil)
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		var excludeHeaders = []string{"Host", "Content-Length"}
+		for k, v := range r.Header {
+			if slices.Contains(excludeHeaders, k) {
+				// skip these parameters
+				continue
+			}
+			request.Header[k] = v
+		}
+		// set id
+		request.Header.Set("X-Away-Id", challenge.RequestDataFromContext(r.Context()).Id.String())
+
+		// set request info in X headers
+		request.Header.Set("X-Away-Host", r.Host)
+		request.Header.Set("X-Away-Path", r.URL.Path)
+		request.Header.Set("X-Away-Query", r.URL.RawQuery)
+
+		response, err := state.Client().Do(request)
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+		defer response.Body.Close()
+		defer io.Copy(io.Discard, response.Body)
+
+		data := challenge.RequestDataFromContext(r.Context())
+
+		if response.StatusCode != params.HttpCode {
+			token, err := reg.IssueChallengeToken(state.PrivateKey(), key, sum, expiry, false)
+			if err != nil {
+				return challenge.VerifyResultFail
+			}
+			utils.SetCookie(data.CookiePrefix+reg.Name, token, expiry, w, r)
+			return challenge.VerifyResultNotOK
+		} else {
+			token, err := reg.IssueChallengeToken(state.PrivateKey(), key, sum, expiry, true)
+			if err != nil {
+				return challenge.VerifyResultFail
+			}
+			utils.SetCookie(data.CookiePrefix+reg.Name, token, expiry, w, r)
+			return challenge.VerifyResultOK
+		}
+	}
+
+	return nil
+}

lib/challenge/key.go

@@ -0,0 +1,80 @@
+package challenge
+
+import (
+	"crypto/sha256"
+	"encoding/binary"
+	"encoding/hex"
+	"errors"
+	"net/http"
+	"time"
+)
+
+type Key [KeySize]byte
+
+const KeySize = sha256.Size
+
+func (k *Key) Set(flags KeyFlags) {
+	(*k)[0] |= uint8(flags)
+}
+func (k *Key) Get(flags KeyFlags) KeyFlags {
+	return KeyFlags((*k)[0] & uint8(flags))
+}
+func (k *Key) Unset(flags KeyFlags) {
+	(*k)[0] = (*k)[0] & ^(uint8(flags))
+}
+
+type KeyFlags uint8
+
+const (
+	KeyFlagIsIPv4 = KeyFlags(1 << iota)
+)
+
+func KeyFromString(s string) (Key, error) {
+	b, err := hex.DecodeString(s)
+	if err != nil {
+		return Key{}, err
+	}
+	if len(b) != KeySize {
+		return Key{}, errors.New("invalid challenge key")
+	}
+	return Key(b), nil
+}
+
+func GetChallengeKeyForRequest(state StateInterface, reg *Registration, until time.Time, r *http.Request) Key {
+	data := RequestDataFromContext(r.Context())
+	address := data.RemoteAddress
+	hasher := sha256.New()
+	hasher.Write([]byte("challenge\x00"))
+	hasher.Write([]byte(reg.Name))
+	hasher.Write([]byte{0})
+	hasher.Write(address.To16())
+	hasher.Write([]byte{0})
+
+	// specific headers
+	for _, k := range []string{
+		"Accept-Language",
+		// General browser information
+		"User-Agent",
+		// TODO: not sent in preload
+		//"Sec-Ch-Ua",
+		//"Sec-Ch-Ua-Platform",
+	} {
+		hasher.Write([]byte(r.Header.Get(k)))
+		hasher.Write([]byte{0})
+	}
+	hasher.Write([]byte{0})
+	_ = binary.Write(hasher, binary.LittleEndian, until.UTC().Unix())
+	hasher.Write([]byte{0})
+	hasher.Write(state.PublicKey())
+	hasher.Write([]byte{0})
+
+	sum := Key(hasher.Sum(nil))
+
+	sum[0] = 0
+
+	if address.To4() != nil {
+		// Is IPv4, mark
+		sum.Set(KeyFlagIsIPv4)
+	}
+	return Key(sum)
+}

lib/challenge/preload-link/preload-link.go

@@ -0,0 +1,128 @@
+package preload_link
+
+import (
+	"context"
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/utils"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"net/http"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes[Key] = FillRegistration
+}
+
+const Key = "preload-link"
+
+type Parameters struct {
+	Deadline time.Duration `yaml:"preload-early-hint-deadline"`
+}
+
+var DefaultParameters = Parameters{
+	Deadline: time.Second * 3,
+}
+
+func FillRegistration(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	params := DefaultParameters
+
+	if parameters != nil {
+		ymlData, err := parameters.MarshalYAML()
+		if err != nil {
+			return err
+		}
+		err = yaml.Unmarshal(ymlData, &params)
+		if err != nil {
+			return err
+		}
+	}
+
+	verifier, issuer := challenge.NewKeyVerifier()
+	reg.Verify = verifier
+
+	reg.Class = challenge.ClassTransparent
+
+	ob := challenge.NewAwaiter[string]()
+
+	reg.Object = ob
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+		// this only works on HTTP/2 and HTTP/3
+
+		if r.ProtoMajor < 2 {
+			// this can happen if we are an upgraded request from HTTP/1.1 to HTTP/2 in H2C
+			if _, ok := w.(http.Pusher); !ok {
+				return challenge.VerifyResultSkip
+			}
+		}
+
+		issuerKey := issuer(key)
+
+		uri, err := challenge.VerifyUrl(r, reg, issuerKey)
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		// remove redirect args
+		values := uri.Query()
+		values.Del(challenge.QueryArgRedirect)
+		uri.RawQuery = values.Encode()
+
+		// Redirect URI must be absolute to work
+		uri.Scheme = utils.GetRequestScheme(r)
+		uri.Host = r.Host
+
+		w.Header().Set("Link", fmt.Sprintf("<%s>; rel=\"preload\"; as=\"style\"; fetchpriority=high", uri.String()))
+		defer func() {
+			// remove old header so it won't show on response!
+			w.Header().Del("Link")
+		}()
+		w.WriteHeader(http.StatusEarlyHints)
+
+		ctx, cancel := context.WithTimeout(r.Context(), params.Deadline)
+		defer cancel()
+		if result := ob.Await(issuerKey, ctx); result.Ok() {
+			// this should serve!
+			return challenge.VerifyResultOK
+		} else if result == challenge.VerifyResultNone {
+			// we hit timeout
+			return challenge.VerifyResultFail
+		} else {
+			return result
+		}
+	}
+
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("GET "+reg.Path+challenge.VerifyChallengeUrlSuffix, func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/css; charset=utf-8")
+		w.Header().Set("Content-Length", "0")
+
+		data := challenge.RequestDataFromContext(r.Context())
+		key := challenge.GetChallengeKeyForRequest(state, reg, data.Expiration(reg.Duration), r)
+		issuerKey := issuer(key)
+
+		_, _, token, err := challenge.GetVerifyInformation(r, reg)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+		}
+
+		verifyResult, _ := verifier(key, []byte(token), r)
+		if !verifyResult.Ok() {
+			w.WriteHeader(http.StatusUnauthorized)
+		} else {
+			w.WriteHeader(http.StatusOK)
+		}
+
+		ob.Solve(issuerKey, verifyResult)
+		if !verifyResult.Ok() {
+			// also give data on other failure when mismatched
+			ob.Solve(token, verifyResult)
+		}
+	})
+	reg.Handler = mux
+
+	return nil
+}

lib/challenge/refresh/refresh.go

@@ -0,0 +1,64 @@
+package refresh
+
+import (
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"net/http"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes["refresh"] = FillRegistration
+}
+
+type Parameters struct {
+	Mode string `yaml:"refresh-mode"`
+}
+
+var DefaultParameters = Parameters{
+	Mode: "header",
+}
+
+func FillRegistration(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	params := DefaultParameters
+
+	if parameters != nil {
+		ymlData, err := parameters.MarshalYAML()
+		if err != nil {
+			return err
+		}
+		err = yaml.Unmarshal(ymlData, &params)
+		if err != nil {
+			return err
+		}
+	}
+
+	reg.Class = challenge.ClassBlocking
+
+	verifier, issuer := challenge.NewKeyVerifier()
+	reg.Verify = verifier
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+		uri, err := challenge.VerifyUrl(r, reg, issuer(key))
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		if params.Mode == "meta" {
+			state.ChallengePage(w, r, state.Settings().ChallengeResponseCode, reg, map[string]any{
+				"Meta": map[string]string{
+					"refresh": "0; url=" + uri.String(),
+				},
+			})
+		} else {
+			// self redirect!
+			w.Header().Set("Refresh", "0; url="+uri.String())
+
+			state.ChallengePage(w, r, state.Settings().ChallengeResponseCode, reg, nil)
+		}
+		return challenge.VerifyResultNone
+	}
+
+	return nil
+}

lib/challenge/register.go

@@ -0,0 +1,251 @@
+package challenge
+
+import (
+	"bytes"
+	"crypto/ed25519"
+	"errors"
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/condition"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/go-jose/go-jose/v4"
+	"github.com/go-jose/go-jose/v4/jwt"
+	"github.com/goccy/go-yaml/ast"
+	"github.com/google/cel-go/cel"
+	"io"
+	"math/rand/v2"
+	"net/http"
+	"path"
+	"strings"
+	"time"
+)
+
+type Register map[Id]*Registration
+
+func (r Register) Get(id Id) (*Registration, bool) {
+	c, ok := r[id]
+	return c, ok
+}
+
+func (r Register) GetByName(name string) (*Registration, Id, bool) {
+	for id, c := range r {
+		if c.Name == name {
+			return c, id, true
+		}
+	}
+
+	return nil, 0, false
+}
+
+var idCounter Id
+
+// DefaultDuration TODO: adjust
+const DefaultDuration = time.Hour * 24 * 7
+
+func (r Register) Create(state StateInterface, name string, pol policy.Challenge, replacer *strings.Replacer) (*Registration, Id, error) {
+	runtime, ok := Runtimes[pol.Runtime]
+	if !ok {
+		return nil, 0, fmt.Errorf("unknown challenge runtime %s", pol.Runtime)
+	}
+
+	reg := &Registration{
+		Name:     name,
+		Path:     path.Join(state.UrlPath(), "challenge", name),
+		Duration: pol.Duration,
+	}
+
+	if reg.Duration == 0 {
+		reg.Duration = DefaultDuration
+	}
+
+	// allow nesting
+	var conditions []string
+	for _, cond := range pol.Conditions {
+		if replacer != nil {
+			cond = replacer.Replace(cond)
+		}
+		conditions = append(conditions, cond)
+	}
+
+	if len(conditions) > 0 {
+		ast, err := condition.FromStrings(state.ProgramEnv(), condition.OperatorOr, conditions...)
+		if err != nil {
+			return nil, 0, fmt.Errorf("error compiling conditions: %v", err)
+		}
+		reg.Condition, err = condition.Program(state.ProgramEnv(), ast)
+		if err != nil {
+			return nil, 0, fmt.Errorf("error compiling program: %v", err)
+		}
+	}
+
+	if _, oldId, ok := r.GetByName(reg.Name); ok {
+		reg.id = oldId
+	} else {
+		idCounter++
+		reg.id = idCounter
+	}
+
+	err := runtime(state, reg, pol.Parameters)
+	if err != nil {
+		return nil, 0, fmt.Errorf("error filling registration: %v", err)
+	}
+	r[reg.id] = reg
+	return reg, reg.id, nil
+}
+
+func (r Register) Add(c *Registration) Id {
+	if _, oldId, ok := r.GetByName(c.Name); ok {
+		c.id = oldId
+		r[oldId] = c
+		return oldId
+	} else {
+		idCounter++
+		c.id = idCounter
+		r[idCounter] = c
+		return idCounter
+	}
+}
+
+type Registration struct {
+	// id The assigned internal identifier
+	id Id
+
+	// Name The unique name for this challenge
+	Name string
+
+	// Class whether this challenge is transparent or otherwise
+	Class Class
+
+	// Condition A CEL condition which is passed the same environment as general rules.
+	// If nil, always true
+	// If non-nil, must return true for this challenge to be allowed to be executed
+	Condition cel.Program
+
+	// Path The url path that this challenge is hosted under for the Handler to be called.
+	Path string
+
+	// Duration How long this challenge will be valid when passed
+	Duration time.Duration
+
+	// Handler An HTTP handler for all requests coming on the Path
+	// This handler will need to handle MakeChallengeUrlSuffix and VerifyChallengeUrlSuffix as well if needed
+	// Recommended to use http.ServeMux
+	Handler http.Handler
+
+	// Verify Verify an issued token
+	Verify            VerifyFunc
+	VerifyProbability float64
+
+	// IssueChallenge Issues a challenge to a request.
+	// If Class is ClassTransparent and VerifyResult is !VerifyResult.Ok(), continue with other challenges
+	// TODO: have this return error as well
+	IssueChallenge func(w http.ResponseWriter, r *http.Request, key Key, expiry time.Time) VerifyResult
+
+	// Object used to handle state or similar
+	// Can be nil if no state is needed
+	// If non-nil must implement io.Closer even if there's nothing to do
+	Object io.Closer
+}
+
+type VerifyFunc func(key Key, token []byte, r *http.Request) (VerifyResult, error)
+
+type Token struct {
+	Name   string `json:"name"`
+	Key    []byte `json:"key"`
+	Result []byte `json:"result,omitempty"`
+	Ok     bool   `json:"ok"`
+
+	Expiry    jwt.NumericDate `json:"exp,omitempty"`
+	NotBefore jwt.NumericDate `json:"nbf,omitempty"`
+	IssuedAt  jwt.NumericDate `json:"iat,omitempty"`
+}
+
+func (reg Registration) Id() Id {
+	return reg.id
+}
+
+func (reg Registration) IssueChallengeToken(privateKey ed25519.PrivateKey, key Key, result []byte, until time.Time, ok bool) (token string, err error) {
+	signer, err := jose.NewSigner(jose.SigningKey{
+		Algorithm: jose.EdDSA,
+		Key:       privateKey,
+	}, nil)
+	if err != nil {
+		return "", err
+	}
+
+	token, err = jwt.Signed(signer).Claims(Token{
+		Name:      reg.Name,
+		Key:       key[:],
+		Result:    result,
+		Ok:        ok,
+		Expiry:    jwt.NumericDate(until.Unix()),
+		NotBefore: jwt.NumericDate(time.Now().UTC().AddDate(0, 0, -1).Unix()),
+		IssuedAt:  jwt.NumericDate(time.Now().UTC().Unix()),
+	}).Serialize()
+	if err != nil {
+		return "", err
+	}
+	return token, nil
+}
+
+var ErrVerifyKeyMismatch = errors.New("verify: key mismatch")
+var ErrVerifyVerifyMismatch = errors.New("verify: verification mismatch")
+var ErrTokenExpired = errors.New("token: expired")
+
+func (reg Registration) VerifyChallengeToken(publicKey ed25519.PublicKey, expectedKey Key, r *http.Request) (VerifyResult, VerifyState, error) {
+	cookie, err := r.Cookie(RequestDataFromContext(r.Context()).CookiePrefix + reg.Name)
+	if err != nil {
+		return VerifyResultNone, VerifyStateNone, err
+	}
+	if cookie == nil {
+		return VerifyResultNone, VerifyStateNone, http.ErrNoCookie
+	}
+
+	token, err := jwt.ParseSigned(cookie.Value, []jose.SignatureAlgorithm{jose.EdDSA})
+	if err != nil {
+		return VerifyResultFail, VerifyStateNone, err
+	}
+
+	var i Token
+	err = token.Claims(publicKey, &i)
+	if err != nil {
+		return VerifyResultFail, VerifyStateNone, err
+	}
+
+	if i.Name != reg.Name {
+		return VerifyResultFail, VerifyStateNone, errors.New("token invalid name")
+	}
+	if i.Expiry.Time().Compare(time.Now()) < 0 {
+		return VerifyResultFail, VerifyStateNone, ErrTokenExpired
+	}
+	if i.NotBefore.Time().Compare(time.Now()) > 0 {
+		return VerifyResultFail, VerifyStateNone, errors.New("token not valid yet")
+	}
+
+	if bytes.Compare(expectedKey[:], i.Key) != 0 {
+		return VerifyResultFail, VerifyStateNone, ErrVerifyKeyMismatch
+	}
+
+	if reg.Verify != nil {
+		if rand.Float64() < reg.VerifyProbability {
+			// random spot check
+			if ok, err := reg.Verify(expectedKey, i.Result, r); err != nil {
+				return VerifyResultFail, VerifyStateFull, err
+			} else if ok == VerifyResultNotOK {
+				return VerifyResultNotOK, VerifyStateFull, nil
+			} else if !ok.Ok() {
+				return ok, VerifyStateFull, ErrVerifyVerifyMismatch
+			} else {
+				return ok, VerifyStateFull, nil
+			}
+		}
+	}
+
+	if !i.Ok {
+		return VerifyResultNotOK, VerifyStateBrief, nil
+	}
+	return VerifyResultOK, VerifyStateBrief, nil
+}
+
+type FillRegistration func(state StateInterface, reg *Registration, parameters ast.Node) error
+
+var Runtimes = make(map[string]FillRegistration)

lib/challenge/resource-load/resource-load.go

@@ -0,0 +1,55 @@
+package resource_load
+
+import (
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"github.com/goccy/go-yaml/ast"
+	"html/template"
+	"net/http"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes["resource-load"] = FillRegistrationHeader
+}
+
+func FillRegistrationHeader(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	reg.Class = challenge.ClassBlocking
+
+	verifier, issuer := challenge.NewKeyVerifier()
+	reg.Verify = verifier
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+		uri, err := challenge.VerifyUrl(r, reg, issuer(key))
+		if err != nil {
+			return challenge.VerifyResultFail
+		}
+
+		// self redirect!
+		//TODO: adjust deadline
+		w.Header().Set("Refresh", "2; url="+r.URL.String())
+
+		state.ChallengePage(w, r, state.Settings().ChallengeResponseCode, reg, map[string]any{
+			"HeaderTags": []template.HTML{
+				template.HTML(fmt.Sprintf("<link href=\"%s\" rel=\"stylesheet\" crossorigin=\"use-credentials\">", uri.String())),
+			},
+		})
+		return challenge.VerifyResultNone
+	}
+
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("GET "+reg.Path+challenge.VerifyChallengeUrlSuffix, challenge.VerifyHandlerFunc(state, reg, nil, func(state challenge.StateInterface, data *challenge.RequestData, w http.ResponseWriter, r *http.Request, verifyResult challenge.VerifyResult, err error, redirect string) {
+		//TODO: add other types inside css that need to be loaded!
+		w.Header().Set("Content-Type", "text/css; charset=utf-8")
+		w.Header().Set("Content-Length", "0")
+		if !verifyResult.Ok() {
+			w.WriteHeader(http.StatusForbidden)
+		} else {
+			w.WriteHeader(http.StatusOK)
+		}
+	}))
+	reg.Handler = mux
+
+	return nil
+}

lib/challenge/script.go

@@ -0,0 +1,41 @@
+package challenge
+
+import (
+	_ "embed"
+	"encoding/json"
+	"git.gammaspectra.live/git/go-away/utils"
+	"net/http"
+	"text/template"
+)
+
+//go:embed script.mjs
+var scriptData []byte
+
+var scriptTemplate = template.Must(template.New("script.mjs").Parse(string(scriptData)))
+
+func ServeChallengeScript(w http.ResponseWriter, r *http.Request, reg *Registration, params any, script string) {
+	data := RequestDataFromContext(r.Context())
+	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	w.Header().Set("Content-Type", "text/javascript; charset=utf-8")
+
+	paramData, err := json.Marshal(params)
+	if err != nil {
+		//TODO: log
+		panic(err)
+	}
+
+	w.WriteHeader(http.StatusOK)
+
+	err = scriptTemplate.Execute(w, map[string]any{
+		"Id":              data.Id.String(),
+		"Path":            reg.Path,
+		"Parameters":      paramData,
+		"Random":          utils.CacheBust(),
+		"Challenge":       reg.Name,
+		"ChallengeScript": script,
+	})
+	if err != nil {
+		//TODO: log
+		panic(err)
+	}
+}

lib/challenge/script.mjs

@@ -54,10 +54,11 @@ const u = (url = "", params = {}) => {
         setTimeout(() => {
             const redir = window.location.href;
             window.location.href = u("{{ .Path }}/verify-challenge", {
-                result: result,
+                __goaway_token: result,
-                redirect: redir,
+                __goaway_challenge: "{{ .Challenge }}",
-                requestId: "{{ .Id }}",
+                __goaway_redirect: redir,
-                elapsedTime: t1 - t0,
+                __goaway_id: "{{ .Id }}",
+                __goaway_elapsedTime: t1 - t0,
             });
         }, 500);
     } catch (err) {

lib/challenge/state.go

@@ -1,176 +0,0 @@
-package challenge
-
-import (
-	"bytes"
-	"crypto/ed25519"
-	"errors"
-	"git.gammaspectra.live/git/go-away/utils"
-	"github.com/go-jose/go-jose/v4"
-	"github.com/go-jose/go-jose/v4/jwt"
-	"github.com/google/cel-go/cel"
-	"math/rand/v2"
-	"net/http"
-	"time"
-)
-
-type Result int
-
-const (
-	// ResultStop Stop testing other challenges and return
-	ResultStop = Result(iota)
-	// ResultContinue Test next
-	ResultContinue
-	// ResultPass  passed, return and proxy
-	ResultPass
-)
-
-type Id int
-
-type Challenge struct {
-	Id      Id
-	Program cel.Program
-	Name    string
-	Path    string
-
-	Verify            func(key []byte, result string, r *http.Request) (bool, error)
-	VerifyProbability float64
-
-	ServeStatic http.Handler
-
-	ServeChallenge func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) Result
-
-	ServeScript     http.Handler
-	ServeScriptPath string
-
-	ServeMakeChallenge   http.Handler
-	ServeVerifyChallenge http.Handler
-}
-
-type Token struct {
-	Name   string `json:"name"`
-	Key    []byte `json:"key"`
-	Result []byte `json:"result,omitempty"`
-
-	Expiry    *jwt.NumericDate `json:"exp,omitempty"`
-	NotBefore *jwt.NumericDate `json:"nbf,omitempty"`
-	IssuedAt  *jwt.NumericDate `json:"iat,omitempty"`
-}
-
-func (c Challenge) IssueChallengeToken(privateKey ed25519.PrivateKey, key, result []byte, until time.Time) (token string, err error) {
-	signer, err := jose.NewSigner(jose.SigningKey{
-		Algorithm: jose.EdDSA,
-		Key:       privateKey,
-	}, nil)
-	if err != nil {
-		return "", err
-	}
-
-	expiry := jwt.NumericDate(until.Unix())
-	notBefore := jwt.NumericDate(time.Now().UTC().AddDate(0, 0, -1).Unix())
-	issuedAt := jwt.NumericDate(time.Now().UTC().Unix())
-
-	token, err = jwt.Signed(signer).Claims(Token{
-		Name:      c.Name,
-		Key:       key,
-		Result:    result,
-		Expiry:    &expiry,
-		NotBefore: &notBefore,
-		IssuedAt:  &issuedAt,
-	}).Serialize()
-	if err != nil {
-		return "", err
-	}
-	return token, nil
-}
-
-type VerifyResult int
-
-const (
-	VerifyResultNONE = VerifyResult(iota)
-	VerifyResultFAIL
-	VerifyResultSKIP
-
-	// VerifyResultPASS Client just passed this challenge
-	VerifyResultPASS
-	VerifyResultOK
-	VerifyResultBRIEF
-	VerifyResultFULL
-)
-
-func (r VerifyResult) Ok() bool {
-	return r >= VerifyResultPASS
-}
-
-func (r VerifyResult) String() string {
-	switch r {
-	case VerifyResultNONE:
-		return "NONE"
-	case VerifyResultFAIL:
-		return "FAIL"
-	case VerifyResultSKIP:
-		return "SKIP"
-	case VerifyResultPASS:
-		return "PASS"
-	case VerifyResultOK:
-		return "OK"
-	case VerifyResultBRIEF:
-		return "BRIEF"
-	case VerifyResultFULL:
-		return "FULL"
-	default:
-		panic("unsupported")
-	}
-}
-
-var ErrVerifyKeyMismatch = errors.New("verify: key mismatch")
-var ErrVerifyVerifyMismatch = errors.New("verify: verification mismatch")
-
-func (c Challenge) VerifyChallengeToken(publicKey ed25519.PublicKey, expectedKey []byte, r *http.Request) (VerifyResult, error) {
-	cookie, err := r.Cookie(utils.CookiePrefix + c.Name)
-	if err != nil {
-		return VerifyResultNONE, err
-	}
-	if cookie == nil {
-		return VerifyResultNONE, http.ErrNoCookie
-	}
-
-	token, err := jwt.ParseSigned(cookie.Value, []jose.SignatureAlgorithm{jose.EdDSA})
-	if err != nil {
-		return VerifyResultFAIL, err
-	}
-
-	var i Token
-	err = token.Claims(publicKey, &i)
-	if err != nil {
-		return VerifyResultFAIL, err
-	}
-
-	if i.Name != c.Name {
-		return VerifyResultFAIL, errors.New("token invalid name")
-	}
-	if i.Expiry == nil && i.Expiry.Time().Compare(time.Now()) < 0 {
-		return VerifyResultFAIL, errors.New("token expired")
-	}
-	if i.NotBefore == nil && i.NotBefore.Time().Compare(time.Now()) > 0 {
-		return VerifyResultFAIL, errors.New("token not valid yet")
-	}
-
-	if bytes.Compare(expectedKey, i.Key) != 0 {
-		return VerifyResultFAIL, ErrVerifyKeyMismatch
-	}
-
-	if c.Verify != nil {
-		if rand.Float64() < c.VerifyProbability {
-			// random spot check
-			if ok, err := c.Verify(expectedKey, string(i.Result), r); err != nil {
-				return VerifyResultFAIL, err
-			} else if !ok {
-				return VerifyResultFAIL, ErrVerifyVerifyMismatch
-			}
-			return VerifyResultFULL, nil
-		} else {
-			return VerifyResultBRIEF, nil
-		}
-	}
-	return VerifyResultOK, nil
-}

lib/challenge/types.go

@@ -0,0 +1,112 @@
+package challenge
+
+import (
+	"crypto/ed25519"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/google/cel-go/cel"
+	"log/slog"
+	"net/http"
+)
+
+type Id int64
+
+type Class uint8
+
+const (
+	// ClassTransparent Transparent challenges work inline in the execution process.
+	// These can pass or continue, so more challenges or requests can ve served afterward.
+	ClassTransparent = Class(iota)
+
+	// ClassBlocking Blocking challenges must serve a different response to challenge the requester.
+	// These can pass or stop, for example, due to serving a challenge
+	ClassBlocking
+)
+
+type VerifyState uint8
+
+const (
+	VerifyStateNone = VerifyState(iota)
+	// VerifyStatePass Challenge was just passed on this request
+	VerifyStatePass
+	// VerifyStateBrief Challenge token was verified but didn't check the challenge
+	VerifyStateBrief
+	// VerifyStateFull Challenge token was verified and challenge verification was done
+	VerifyStateFull
+)
+
+func (r VerifyState) String() string {
+	switch r {
+	case VerifyStatePass:
+		return "PASS"
+	case VerifyStateBrief:
+		return "BRIEF"
+	case VerifyStateFull:
+		return "FULL"
+	default:
+		panic("unsupported")
+	}
+}
+
+type VerifyResult uint8
+
+const (
+	// VerifyResultNone A negative pass result, without a token
+	VerifyResultNone = VerifyResult(iota)
+	// VerifyResultFail A negative pass result, with an invalid token
+	VerifyResultFail
+	// VerifyResultSkip Challenge was skipped due to precondition
+	VerifyResultSkip
+	// VerifyResultNotOK A negative pass result, with a valid token
+	VerifyResultNotOK
+
+	// VerifyResultOK A positive pass result, with a valid token
+	VerifyResultOK
+)
+
+func (r VerifyResult) Ok() bool {
+	return r >= VerifyResultOK
+}
+
+func (r VerifyResult) String() string {
+	switch r {
+	case VerifyResultNone:
+		return "None"
+	case VerifyResultFail:
+		return "Fail"
+	case VerifyResultSkip:
+		return "Skip"
+	case VerifyResultNotOK:
+		return "NotOK"
+	case VerifyResultOK:
+		return "OK"
+	default:
+		panic("unsupported")
+	}
+}
+
+type StateInterface interface {
+	ProgramEnv() *cel.Env
+
+	Client() *http.Client
+	PrivateKey() ed25519.PrivateKey
+	PublicKey() ed25519.PublicKey
+
+	UrlPath() string
+
+	ChallengeFailed(r *http.Request, reg *Registration, err error, redirect string, logger *slog.Logger)
+	ChallengePassed(r *http.Request, reg *Registration, redirect string, logger *slog.Logger)
+	ChallengeIssued(r *http.Request, reg *Registration, redirect string, logger *slog.Logger)
+
+	Logger(r *http.Request) *slog.Logger
+
+	ChallengePage(w http.ResponseWriter, r *http.Request, status int, reg *Registration, params map[string]any)
+	ErrorPage(w http.ResponseWriter, r *http.Request, status int, err error, redirect string)
+
+	GetChallenge(id Id) (*Registration, bool)
+	GetChallengeByName(name string) (*Registration, bool)
+	GetChallenges() Register
+
+	Settings() policy.Settings
+
+	GetBackend(host string) http.Handler
+}

lib/challenge/wasm/interface/interface.go

@@ -111,6 +111,7 @@ type VerifyChallengeInput struct {
 
 type VerifyChallengeOutput uint64
 
+// TODO: expand allowed values
 const (
 	VerifyChallengeOutputOK = VerifyChallengeOutput(iota)
 	VerifyChallengeOutputFailed

lib/challenge/wasm/registration.go

@@ -0,0 +1,186 @@
+package wasm
+
+import (
+	"codeberg.org/meta/gzipped/v2"
+	"context"
+	"errors"
+	"fmt"
+	"git.gammaspectra.live/git/go-away/embed"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	_interface "git.gammaspectra.live/git/go-away/lib/challenge/wasm/interface"
+	"git.gammaspectra.live/git/go-away/utils"
+	"git.gammaspectra.live/git/go-away/utils/inline"
+	"github.com/goccy/go-yaml"
+	"github.com/goccy/go-yaml/ast"
+	"github.com/tetratelabs/wazero/api"
+	"html/template"
+	"io"
+	"io/fs"
+	"net/http"
+	"path"
+	"time"
+)
+
+func init() {
+	challenge.Runtimes["js"] = FillJavaScriptRegistration
+}
+
+type Parameters struct {
+	Path string `yaml:"path"`
+	// Loader path to js/mjs file to use as challenge issuer
+	Loader string `yaml:"js-loader"`
+
+	// Runtime path to WASM wasip1 runtime
+	Runtime string `yaml:"wasm-runtime"`
+
+	Settings map[string]string `yaml:"wasm-runtime-settings"`
+
+	NativeCompiler bool `yaml:"wasm-native-compiler"`
+
+	VerifyProbability float64 `yaml:"verify-probability"`
+}
+
+var DefaultParameters = Parameters{
+	VerifyProbability: 0.1,
+	NativeCompiler:    true,
+}
+
+func FillJavaScriptRegistration(state challenge.StateInterface, reg *challenge.Registration, parameters ast.Node) error {
+	params := DefaultParameters
+
+	if parameters != nil {
+		ymlData, err := parameters.MarshalYAML()
+		if err != nil {
+			return err
+		}
+		err = yaml.Unmarshal(ymlData, &params)
+		if err != nil {
+			return err
+		}
+	}
+
+	reg.Class = challenge.ClassBlocking
+
+	mux := http.NewServeMux()
+
+	if params.Path == "" {
+		params.Path = reg.Name
+	}
+
+	assetsFs, err := embed.GetFallbackFS(embed.ChallengeFs, params.Path)
+	if err != nil {
+		return err
+	}
+
+	if params.VerifyProbability <= 0 {
+		//10% default
+		params.VerifyProbability = 0.1
+	} else if params.VerifyProbability > 1.0 {
+		params.VerifyProbability = 1.0
+	}
+
+	reg.VerifyProbability = params.VerifyProbability
+
+	ob := NewRunner(params.NativeCompiler)
+	reg.Object = ob
+
+	wasmData, err := assetsFs.ReadFile(path.Join("runtime", params.Runtime))
+	if err != nil {
+		return fmt.Errorf("could not load runtime: %w", err)
+	}
+
+	err = ob.Compile("runtime", wasmData)
+	if err != nil {
+		return fmt.Errorf("compiling runtime: %w", err)
+	}
+
+	reg.IssueChallenge = func(w http.ResponseWriter, r *http.Request, key challenge.Key, expiry time.Time) challenge.VerifyResult {
+		state.ChallengePage(w, r, state.Settings().ChallengeResponseCode, reg, map[string]any{
+			"EndTags": []template.HTML{
+				template.HTML(fmt.Sprintf("<script async type=\"module\" src=\"%s?cacheBust=%s\"></script>", reg.Path+"/script.mjs", utils.CacheBust())),
+			},
+		})
+		return challenge.VerifyResultNone
+	}
+
+	reg.Verify = func(key challenge.Key, token []byte, r *http.Request) (challenge.VerifyResult, error) {
+		var ok bool
+		err = ob.Instantiate("runtime", func(ctx context.Context, mod api.Module) (err error) {
+			in := _interface.VerifyChallengeInput{
+				Key:        key[:],
+				Parameters: params.Settings,
+				Result:     token,
+			}
+
+			out, err := VerifyChallengeCall(ctx, mod, in)
+			if err != nil {
+				return err
+			}
+
+			if out == _interface.VerifyChallengeOutputError {
+				return errors.New("error checking challenge")
+			}
+			ok = out == _interface.VerifyChallengeOutputOK
+			return nil
+		})
+		if err != nil {
+			return challenge.VerifyResultFail, err
+		}
+		if ok {
+			return challenge.VerifyResultOK, nil
+		}
+		return challenge.VerifyResultFail, nil
+	}
+
+	// serve assets if existent
+	if staticFs, err := fs.Sub(assetsFs, "static"); err != nil {
+		return fmt.Errorf("no static assets: %w", err)
+	} else {
+		mux.Handle("GET "+reg.Path+"/static/", http.StripPrefix(reg.Path+"/static/", gzipped.FileServer(gzipped.FS(staticFs))))
+	}
+
+	mux.HandleFunc(reg.Path+challenge.MakeChallengeUrlSuffix, func(w http.ResponseWriter, r *http.Request) {
+		data := challenge.RequestDataFromContext(r.Context())
+		err := ob.Instantiate("runtime", func(ctx context.Context, mod api.Module) (err error) {
+			key := challenge.GetChallengeKeyForRequest(state, reg, data.Expiration(reg.Duration), r)
+
+			in := _interface.MakeChallengeInput{
+				Key:        key[:],
+				Parameters: params.Settings,
+				Headers:    inline.MIMEHeader(r.Header),
+			}
+			in.Data, err = io.ReadAll(r.Body)
+			if err != nil {
+				return err
+			}
+
+			out, err := MakeChallengeCall(ctx, mod, in)
+			if err != nil {
+				return err
+			}
+
+			// set output headers
+			for k, v := range out.Headers {
+				w.Header()[k] = v
+			}
+			w.Header().Set("Content-Length", fmt.Sprintf("%d", len(out.Data)))
+			w.WriteHeader(out.Code)
+			_, _ = w.Write(out.Data)
+			return nil
+		})
+		if err != nil {
+			state.ErrorPage(w, r, http.StatusInternalServerError, err, "")
+			return
+		}
+	})
+
+	mux.HandleFunc(reg.Path+challenge.VerifyChallengeUrlSuffix, challenge.VerifyHandlerFunc(state, reg, nil, nil))
+
+	mux.HandleFunc("GET "+reg.Path+"/script.mjs", func(w http.ResponseWriter, r *http.Request) {
+		challenge.ServeChallengeScript(w, r, reg, params.Settings, path.Join(reg.Path, "static", params.Loader))
+	})
+
+	reg.Handler = mux
+
+	return nil
+}

lib/challenge/wasm/runner.go

@@ -94,11 +94,13 @@ func (r *Runner) Compile(key string, binary []byte) error {
 	return nil
 }
 
-func (r *Runner) Close() {
+func (r *Runner) Close() error {
 	for _, module := range r.modules {
-		module.Close(r.context)
+		if err := module.Close(r.context); err != nil {
+			return err
+		}
 	}
-	r.runtime.Close(r.context)
+	return r.runtime.Close(r.context)
 }
 
 var ErrModuleNotFound = errors.New("module not found")

lib/condition/condition.go

@@ -3,6 +3,12 @@ package condition
 import (
 	"fmt"
 	"github.com/google/cel-go/cel"
+	"github.com/google/cel-go/common/types"
+	"github.com/google/cel-go/common/types/ref"
+	"github.com/google/cel-go/ext"
+	"github.com/yl2chen/cidranger"
+	"log/slog"
+	"net"
 	"strings"
 )
 
@@ -15,6 +21,124 @@ const (
 	OperatorAnd = "&&"
 )
 
+func NewRulesEnvironment(networks map[string]cidranger.Ranger) (*cel.Env, error) {
+
+	return cel.NewEnv(
+		ext.Strings(
+			ext.StringsLocale("en_US"),
+			ext.StringsValidateFormatCalls(true),
+		),
+		cel.DefaultUTCTimeZone(true),
+		//TODO: custom type for remoteAddress
+		cel.Variable("remoteAddress", cel.BytesType),
+		cel.Variable("host", cel.StringType),
+		cel.Variable("method", cel.StringType),
+		cel.Variable("userAgent", cel.StringType),
+		cel.Variable("path", cel.StringType),
+		cel.Variable("query", cel.MapType(cel.StringType, cel.StringType)),
+		cel.Variable("fp", cel.MapType(cel.StringType, cel.StringType)),
+		// http.Header
+		cel.Variable("headers", cel.MapType(cel.StringType, cel.StringType)),
+		//TODO: dynamic type?
+		cel.Function("inDNSBL",
+			cel.Overload("inDNSBL_ip",
+				[]*cel.Type{cel.AnyType},
+				cel.BoolType,
+				cel.UnaryBinding(func(val ref.Val) ref.Val {
+					slog.Error("inDNSBL function has been deprecated, replace with dnsbl challenge")
+					return types.Bool(false)
+				}),
+			),
+		),
+		cel.Function("network",
+			cel.MemberOverload("netIP_network_string",
+				[]*cel.Type{cel.BytesType, cel.StringType},
+				cel.BoolType,
+				cel.BinaryBinding(func(lhs ref.Val, rhs ref.Val) ref.Val {
+					var ip net.IP
+					switch v := lhs.Value().(type) {
+					case []byte:
+						ip = v
+					case net.IP:
+						ip = v
+					}
+
+					if ip == nil {
+						panic(fmt.Errorf("invalid ip %v", lhs.Value()))
+					}
+
+					val, ok := rhs.Value().(string)
+					if !ok {
+						panic(fmt.Errorf("invalid network value %v", rhs.Value()))
+					}
+
+					network, ok := networks[val]
+					if !ok {
+						_, ipNet, err := net.ParseCIDR(val)
+						if err != nil {
+							panic("network not found")
+						}
+						return types.Bool(ipNet.Contains(ip))
+					} else {
+						ok, err := network.Contains(ip)
+						if err != nil {
+							panic(err)
+						}
+						return types.Bool(ok)
+					}
+				}),
+			),
+		),
+
+		cel.Function("inNetwork",
+			cel.Overload("inNetwork_string_ip",
+				[]*cel.Type{cel.StringType, cel.BytesType},
+				cel.BoolType,
+				cel.BinaryBinding(func(lhs ref.Val, rhs ref.Val) ref.Val {
+					var ip net.IP
+					switch v := rhs.Value().(type) {
+					case []byte:
+						ip = v
+					case net.IP:
+						ip = v
+					}
+
+					if ip == nil {
+						panic(fmt.Errorf("invalid ip %v", rhs.Value()))
+					}
+
+					val, ok := lhs.Value().(string)
+					if !ok {
+						panic(fmt.Errorf("invalid value %v", lhs.Value()))
+					}
+					slog.Debug(fmt.Sprintf("inNetwork function has been deprecated and will be removed in a future release, use remoteAddress.network(\"%s\") instead", val))
+
+					network, ok := networks[val]
+					if !ok {
+						_, ipNet, err := net.ParseCIDR(val)
+						if err != nil {
+							panic("network not found")
+						}
+						return types.Bool(ipNet.Contains(ip))
+					} else {
+						ok, err := network.Contains(ip)
+						if err != nil {
+							panic(err)
+						}
+						return types.Bool(ok)
+					}
+				}),
+			),
+		),
+	)
+}
+
+func Program(env *cel.Env, ast *cel.Ast) (cel.Program, error) {
+	return env.Program(ast,
+		cel.EvalOptions(cel.OptOptimize),
+	)
+}
+
 func FromStrings(env *cel.Env, operator string, conditions ...string) (*cel.Ast, error) {
 	var asts []*cel.Ast
 	for _, c := range conditions {

lib/condition/map.go

@@ -0,0 +1,158 @@
+package condition
+
+import (
+	"fmt"
+	"github.com/google/cel-go/common/types"
+	"github.com/google/cel-go/common/types/ref"
+	"github.com/google/cel-go/common/types/traits"
+	"net/textproto"
+	"reflect"
+	"strings"
+)
+
+type mimeLike struct {
+	m textproto.MIMEHeader
+}
+
+func (a mimeLike) ConvertToNative(typeDesc reflect.Type) (any, error) {
+	return nil, fmt.Errorf("type conversion error from map to '%v'", typeDesc)
+}
+
+func (a mimeLike) ConvertToType(typeVal ref.Type) ref.Val {
+	switch typeVal {
+	case types.MapType:
+		return a
+	case types.TypeType:
+		return types.MapType
+	}
+	return types.NewErr("type conversion error from '%s' to '%s'", types.MapType, typeVal)
+}
+
+func (a mimeLike) Equal(other ref.Val) ref.Val {
+	return types.Bool(false)
+}
+
+func (a mimeLike) Type() ref.Type {
+	return types.MapType
+}
+
+func (a mimeLike) Value() any {
+	return a.m
+}
+
+func (a mimeLike) Contains(key ref.Val) ref.Val {
+	_, found := a.Find(key)
+	return types.Bool(found)
+}
+
+func (a mimeLike) Get(key ref.Val) ref.Val {
+	v, found := a.Find(key)
+	if !found {
+		return types.ValOrErr(v, "no such key: %v", key)
+	}
+	return v
+}
+
+func (a mimeLike) Iterator() traits.Iterator {
+	panic("implement me")
+}
+
+func (a mimeLike) IsZeroValue() bool {
+	return len(a.m) == 0
+}
+
+func (a mimeLike) Size() ref.Val {
+	return types.Int(len(a.m))
+}
+
+func (a mimeLike) Find(key ref.Val) (ref.Val, bool) {
+	k, ok := key.(types.String)
+	if !ok {
+		return nil, false
+	}
+
+	return singleVal(a.m.Values(string(k)), true)
+}
+
+type valuesLike struct {
+	m map[string][]string
+}
+
+func (a valuesLike) ConvertToNative(typeDesc reflect.Type) (any, error) {
+	return nil, fmt.Errorf("type conversion error from map to '%v'", typeDesc)
+}
+
+func (a valuesLike) ConvertToType(typeVal ref.Type) ref.Val {
+	switch typeVal {
+	case types.MapType:
+		return a
+	case types.TypeType:
+		return types.MapType
+	}
+	return types.NewErr("type conversion error from '%s' to '%s'", types.MapType, typeVal)
+}
+
+func (a valuesLike) Equal(other ref.Val) ref.Val {
+	return types.Bool(false)
+}
+
+func (a valuesLike) Type() ref.Type {
+	return types.MapType
+}
+
+func (a valuesLike) Value() any {
+	return a.m
+}
+
+func (a valuesLike) Contains(key ref.Val) ref.Val {
+	_, found := a.Find(key)
+	return types.Bool(found)
+}
+
+func (a valuesLike) Get(key ref.Val) ref.Val {
+	v, found := a.Find(key)
+	if !found {
+		return types.ValOrErr(v, "no such key: %v", key)
+	}
+	return v
+}
+
+func (a valuesLike) Iterator() traits.Iterator {
+	panic("implement me")
+}
+
+func (a valuesLike) IsZeroValue() bool {
+	return len(a.m) == 0
+}
+
+func (a valuesLike) Size() ref.Val {
+	return types.Int(len(a.m))
+}
+
+func (a valuesLike) Find(key ref.Val) (ref.Val, bool) {
+	k, ok := key.(types.String)
+	if !ok {
+		return nil, false
+	}
+
+	val, ok := a.m[string(k)]
+	return singleVal(val, ok)
+}
+
+func singleVal(values []string, ok bool) (ref.Val, bool) {
+	if len(values) == 0 || !ok {
+		return nil, false
+	}
+	if len(values) > 1 {
+		return types.String(strings.Join(values, ",")), true
+	}
+	return types.String(values[0]), true
+}
+
+func NewMIMEMap(m textproto.MIMEHeader) traits.Mapper {
+	return mimeLike{m: m}
+}
+
+func NewValuesMap(m map[string][]string) traits.Mapper {
+	return valuesLike{m: m}
+}

lib/conditions.go

@@ -1,118 +1,11 @@
 package lib
 
 import (
-	"context"
+	"git.gammaspectra.live/git/go-away/lib/condition"
-	"fmt"
-	"github.com/google/cel-go/cel"
-	"github.com/google/cel-go/common/types"
-	"github.com/google/cel-go/common/types/ref"
-	"log/slog"
-	"net"
-	"time"
 )
 
 func (state *State) initConditions() (err error) {
-	state.RulesEnv, err = cel.NewEnv(
+	state.programEnv, err = condition.NewRulesEnvironment(state.networks)
-		cel.DefaultUTCTimeZone(true),
-		cel.Variable("remoteAddress", cel.BytesType),
-		cel.Variable("host", cel.StringType),
-		cel.Variable("method", cel.StringType),
-		cel.Variable("userAgent", cel.StringType),
-		cel.Variable("path", cel.StringType),
-		cel.Variable("query", cel.MapType(cel.StringType, cel.StringType)),
-		cel.Variable("fpJA3N", cel.StringType),
-		cel.Variable("fpJA4", cel.StringType),
-		// http.Header
-		cel.Variable("headers", cel.MapType(cel.StringType, cel.StringType)),
-		//TODO: dynamic type?
-		cel.Function("inDNSBL",
-			cel.Overload("inDNSBL_ip",
-				[]*cel.Type{cel.AnyType},
-				cel.BoolType,
-				cel.UnaryBinding(func(val ref.Val) ref.Val {
-					if state.Settings.DNSBL == nil {
-						return types.Bool(false)
-					}
-
-					var ip net.IP
-					switch v := val.Value().(type) {
-					case []byte:
-						ip = v
-					case net.IP:
-						ip = v
-					case string:
-						ip = net.ParseIP(v)
-					}
-
-					if ip == nil {
-						panic(fmt.Errorf("invalid ip %v", val.Value()))
-					}
-
-					var key [net.IPv6len]byte
-					copy(key[:], ip.To16())
-
-					result, ok := state.DecayMap.Get(key)
-					if ok {
-						return types.Bool(result.Bad())
-					}
-
-					ctx, cancel := context.WithTimeout(context.Background(), time.Second)
-					defer cancel()
-					result, err := state.Settings.DNSBL.Lookup(ctx, ip)
-					if err != nil {
-						slog.Debug("dnsbl lookup failed", "address", ip.String(), "result", result, "err", err)
-					} else {
-						slog.Debug("dnsbl lookup", "address", ip.String(), "result", result)
-					}
-					//TODO: configure decay
-					state.DecayMap.Set(key, result, time.Hour)
-
-					return types.Bool(result.Bad())
-				}),
-			),
-		),
-		cel.Function("inNetwork",
-			cel.Overload("inNetwork_string_ip",
-				[]*cel.Type{cel.StringType, cel.AnyType},
-				cel.BoolType,
-				cel.BinaryBinding(func(lhs ref.Val, rhs ref.Val) ref.Val {
-					var ip net.IP
-					switch v := rhs.Value().(type) {
-					case []byte:
-						ip = v
-					case net.IP:
-						ip = v
-					case string:
-						ip = net.ParseIP(v)
-					}
-
-					if ip == nil {
-						panic(fmt.Errorf("invalid ip %v", rhs.Value()))
-					}
-
-					val, ok := lhs.Value().(string)
-					if !ok {
-						panic(fmt.Errorf("invalid value %v", lhs.Value()))
-					}
-
-					network, ok := state.Networks[val]
-					if !ok {
-						_, ipNet, err := net.ParseCIDR(val)
-						if err != nil {
-							panic("network not found")
-						}
-						return types.Bool(ipNet.Contains(ip))
-					} else {
-						ok, err := network.Contains(ip)
-						if err != nil {
-							panic(err)
-						}
-						return types.Bool(ok)
-					}
-				}),
-			),
-		),
-	)
 	if err != nil {
 		return err
 	}

lib/http.go

@@ -1,28 +1,16 @@
 package lib
 
 import (
-	"bytes"
 	"codeberg.org/meta/gzipped/v2"
-	"context"
-	"crypto/rand"
-	"encoding/base64"
-	"encoding/hex"
-	"errors"
 	"fmt"
 	"git.gammaspectra.live/git/go-away/embed"
+	"git.gammaspectra.live/git/go-away/lib/action"
 	"git.gammaspectra.live/git/go-away/lib/challenge"
-	"git.gammaspectra.live/git/go-away/lib/policy"
 	"git.gammaspectra.live/git/go-away/utils"
-	"github.com/google/cel-go/common/types"
 	"html/template"
-	"io"
 	"log/slog"
-	"maps"
-	"net"
 	"net/http"
 	"net/http/pprof"
-	"path"
-	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
@@ -30,20 +18,11 @@ import (
 
 var templates map[string]*template.Template
 
-var cacheBust string
-
-// DefaultValidity TODO: adjust
-const DefaultValidity = time.Hour * 24 * 7
-
 func init() {
 
-	buf := make([]byte, 16)
-	_, _ = rand.Read(buf)
-	cacheBust = base64.RawURLEncoding.EncodeToString(buf)
-
 	templates = make(map[string]*template.Template)
 
-	dir, err := embed.TemplatesFs.ReadDir("templates")
+	dir, err := embed.TemplatesFs.ReadDir(".")
 	if err != nil {
 		panic(err)
 	}
@@ -51,7 +30,7 @@ func init() {
 		if e.IsDir() {
 			continue
 		}
-		data, err := embed.TemplatesFs.ReadFile(filepath.Join("templates", e.Name()))
+		data, err := embed.TemplatesFs.ReadFile(e.Name())
 		if err != nil {
 			panic(err)
 		}
@@ -72,69 +51,16 @@ func initTemplate(name, data string) error {
 	return nil
 }
 
-func (state *State) challengePage(w http.ResponseWriter, id string, status int, challenge string, params map[string]any) error {
-	input := make(map[string]any)
-	input["Id"] = id
-	input["Random"] = cacheBust
-	input["Challenge"] = challenge
-	input["Path"] = state.UrlPath
-	input["Theme"] = state.Settings.ChallengeTemplateTheme
-
-	maps.Copy(input, params)
-
-	if _, ok := input["Title"]; !ok {
-		input["Title"] = "Checking you are not a bot"
-	}
-
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-
-	buf := bytes.NewBuffer(make([]byte, 0, 8192))
-
-	err := templates["challenge-"+state.Settings.ChallengeTemplate+".gohtml"].Execute(buf, input)
-	if err != nil {
-		_ = state.errorPage(w, id, http.StatusInternalServerError, err, "")
-	} else {
-		w.WriteHeader(status)
-		_, _ = w.Write(buf.Bytes())
-	}
-	return nil
-}
-
-func (state *State) errorPage(w http.ResponseWriter, id string, status int, err error, redirect string) error {
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-
-	buf := bytes.NewBuffer(make([]byte, 0, 8192))
-
-	err2 := templates["challenge-"+state.Settings.ChallengeTemplate+".gohtml"].Execute(buf, map[string]any{
-		"Id":          id,
-		"Random":      cacheBust,
-		"Error":       err.Error(),
-		"Path":        state.UrlPath,
-		"Theme":       state.Settings.ChallengeTemplateTheme,
-		"Title":       "Oh no! " + http.StatusText(status),
-		"HideSpinner": true,
-		"Challenge":   "",
-		"Redirect":    redirect,
-	})
-	if err2 != nil {
-		panic(err2)
-	} else {
-		w.WriteHeader(status)
-		_, _ = w.Write(buf.Bytes())
-	}
-	return nil
-}
-
 func (state *State) addTiming(w http.ResponseWriter, name, desc string, duration time.Duration) {
-	if state.Settings.Debug {
+	if state.Settings().Debug {
 		w.Header().Add("Server-Timing", fmt.Sprintf("%s;desc=%s;dur=%d", name, strconv.Quote(desc), duration.Milliseconds()))
 	}
 }
 
 func GetLoggerForRequest(r *http.Request) *slog.Logger {
-	data := RequestDataFromContext(r.Context())
+	data := challenge.RequestDataFromContext(r.Context())
 	args := []any{
-		"request_id", hex.EncodeToString(data.Id[:]),
+		"request_id", data.Id.String(),
 		"remote_address", data.RemoteAddress.String(),
 		"user_agent", r.UserAgent(),
 		"host", r.Host,
@@ -153,272 +79,96 @@ func GetLoggerForRequest(r *http.Request) *slog.Logger {
 	return slog.With(args...)
 }
 
-func (state *State) logger(r *http.Request) *slog.Logger {
-	return GetLoggerForRequest(r)
-}
-
 func (state *State) handleRequest(w http.ResponseWriter, r *http.Request) {
 	host := r.Host
 
-	data := RequestDataFromContext(r.Context())
+	data := challenge.RequestDataFromContext(r.Context())
 
-	backend, ok := state.Settings.Backends[host]
+	backend := state.GetBackend(host)
-	if !ok {
+	if backend == nil {
 		http.Error(w, http.StatusText(http.StatusServiceUnavailable), http.StatusServiceUnavailable)
 		return
 	}
 
-	lg := state.logger(r)
+	lg := state.Logger(r)
 
-	start := time.Now()
+	cleanupRequest := func(r *http.Request, fromChallenge bool) {
-
+		if fromChallenge {
-	state.addTiming(w, "rule-env", "Setup the rule environment", time.Since(start))
+			r.Header.Del("Referer")
-
-	var (
-		ruleEvalDuration time.Duration
-	)
-
-	serve := func() {
-		state.addTiming(w, "rule-eval", "Evaluate access rules", ruleEvalDuration)
-		backend.ServeHTTP(w, r)
-	}
-
-	fail := func(code int, err error) {
-		state.addTiming(w, "rule-eval", "Evaluate access rules", ruleEvalDuration)
-		_ = state.errorPage(w, r.Header.Get("X-Away-Id"), code, err, "")
-	}
-
-	setAwayState := func(rule RuleState) {
-		r.Header.Set("X-Away-Rule", rule.Name)
-		r.Header.Set("X-Away-Hash", rule.Hash)
-		r.Header.Set("X-Away-Action", string(rule.Action))
-		data.Headers(state, r.Header)
-	}
-
-	for _, rule := range state.Rules {
-		// skip rules that have host match
-		if rule.Host != nil && *rule.Host != host {
-			continue
 		}
-		start = time.Now()
+		q := r.URL.Query()
-		out, _, err := rule.Program.Eval(data.ProgramEnv)
-		ruleEvalDuration += time.Since(start)
 
-		if err != nil {
+		if ref := q.Get(challenge.QueryArgReferer); ref != "" {
-			fail(http.StatusInternalServerError, err)
+			r.Header.Set("Referer", ref)
-			lg.Error(err.Error(), "rule", rule.Name, "rule_hash", rule.Hash)
+		}
-			panic(err)
-			return
-		} else if out != nil && out.Type() == types.BoolType {
-			if out.Equal(types.True) == types.True {
-				switch rule.Action {
-				default:
-					panic(fmt.Errorf("unknown action %s", rule.Action))
-				case policy.RuleActionPASS:
-					lg.Debug("request passed", "rule", rule.Name, "rule_hash", rule.Hash)
-					setAwayState(rule)
-					serve()
-					return
-				case policy.RuleActionCHALLENGE, policy.RuleActionCHECK:
-					for _, challengeId := range rule.Challenges {
-						if result := data.Challenges[challengeId]; !result.Ok() {
-							continue
-						} else {
-							if rule.Action == policy.RuleActionCHECK {
-								goto nextRule
-							}
 
-							// we passed the challenge!
+		// delete query parameters that were set by go-away
-							lg.Debug("request passed", "rule", rule.Name, "rule_hash", rule.Hash, "challenge", state.Challenges[challengeId].Name)
+		for k := range q {
-							setAwayState(rule)
+			if strings.HasPrefix(k, challenge.QueryArgPrefix) {
-							serve()
+				q.Del(k)
-							return
-						}
-					}
-
-					// none matched, issue first challenge in priority
-					for _, challengeId := range rule.Challenges {
-						result := data.Challenges[challengeId]
-						if result.Ok() || result == challenge.VerifyResultSKIP {
-							// skip already ok'd challenges for some reason, and also skip skipped challenges
-							continue
-						}
-						c := state.Challenges[challengeId]
-						if c.ServeChallenge != nil {
-							result := c.ServeChallenge(w, r, state.GetChallengeKeyForRequest(c.Name, data.Expires, r), data.Expires)
-							switch result {
-							case challenge.ResultStop:
-								lg.Info("request challenged", "rule", rule.Name, "rule_hash", rule.Hash, "challenge", c.Name)
-								return
-							case challenge.ResultContinue:
-								continue
-							case challenge.ResultPass:
-								if rule.Action == policy.RuleActionCHECK {
-									goto nextRule
-								}
-								state.logger(r).Warn("challenge passed", "rule", rule.Name, "rule_hash", rule.Hash, "challenge", c.Name)
-
-								// set pass if caller didn't set one
-								if !data.Challenges[c.Id].Ok() {
-									data.Challenges[c.Id] = challenge.VerifyResultPASS
-								}
-
-								// we pass the challenge early!
-								lg.Debug("request passed", "rule", rule.Name, "rule_hash", rule.Hash, "challenge", c.Name)
-								setAwayState(rule)
-								serve()
-								return
-							}
-						} else {
-							panic("challenge not found")
-						}
-					}
-				case policy.RuleActionDENY:
-					lg.Info("request denied", "rule", rule.Name, "rule_hash", rule.Hash)
-					//TODO: config error code
-					fail(http.StatusForbidden, fmt.Errorf("access denied: denied by administrative rule %s/%s", r.Header.Get("X-Away-Id"), rule.Hash))
-					return
-				case policy.RuleActionBLOCK:
-					lg.Info("request blocked", "rule", rule.Name, "rule_hash", rule.Hash)
-					//TODO: config error code
-					//TODO: configure block
-					fail(http.StatusForbidden, fmt.Errorf("access denied: blocked by administrative rule %s/%s", r.Header.Get("X-Away-Id"), rule.Hash))
-					return
-				case policy.RuleActionPOISON:
-					lg.Info("request poisoned", "rule", rule.Name, "rule_hash", rule.Hash)
-
-					mime := "text/html"
-					switch path.Ext(r.URL.Path) {
-					case ".css":
-					case ".json", ".js", ".mjs":
-
-					}
-
-					encodings := strings.Split(r.Header.Get("Accept-Encoding"), ",")
-					for i, encoding := range encodings {
-						encodings[i] = strings.TrimSpace(strings.ToLower(encoding))
-					}
-
-					reader, encoding := state.getPoison(mime, encodings)
-					if reader == nil {
-						mime = "application/octet-stream"
-						reader, encoding = state.getPoison(mime, encodings)
-					}
-
-					if reader != nil {
-						defer reader.Close()
-
-						w.Header().Set("Cache-Control", "max-age=0, private, must-revalidate, no-transform")
-						w.Header().Set("Vary", "Accept-Encoding")
-						w.Header().Set("Content-Type", mime)
-						w.Header().Set("X-Content-Type-Options", "nosniff")
-						if encoding != "" {
-							w.Header().Set("Content-Encoding", encoding)
-						}
-						w.WriteHeader(http.StatusOK)
-						if flusher, ok := w.(http.Flusher); ok {
-							// trigger chunked encoding
-							flusher.Flush()
-						}
-						if r != nil {
-							_, _ = io.Copy(w, reader)
-						}
-					} else {
-						http.Error(w, http.StatusText(http.StatusForbidden), http.StatusForbidden)
-					}
-					return
-				}
 			}
 		}
+		r.URL.RawQuery = q.Encode()
 
-	nextRule:
+		data.Headers(r.Header)
+
+		// delete cookies set by go-away to prevent user tracking that way
+		cookies := r.Cookies()
+		r.Header.Del("Cookie")
+		for _, c := range cookies {
+			if !strings.HasPrefix(c.Name, utils.CookiePrefix) {
+				r.AddCookie(c)
+			}
+		}
 	}
 
-	serve()
+	for _, rule := range state.rules {
-	return
+		next, err := rule.Evaluate(lg, w, r, func() http.Handler {
+			cleanupRequest(r, true)
+			return backend
+		})
+		if err != nil {
+			state.ErrorPage(w, r, http.StatusInternalServerError, err, "")
+			panic(err)
+			return
+		}
+
+		if !next {
+			return
+		}
+	}
+
+	// default pass
+	_, _ = action.Pass{}.Handle(lg, w, r, func() http.Handler {
+		r.Header.Set("X-Away-Rule", "DEFAULT")
+		r.Header.Set("X-Away-Action", "PASS")
+
+		cleanupRequest(r, false)
+		return backend
+	})
 }
 
 func (state *State) setupRoutes() error {
 
 	state.Mux.HandleFunc("/", state.handleRequest)
 
-	if state.Settings.Debug {
+	if state.Settings().Debug {
-		http.HandleFunc(state.UrlPath+"/debug/pprof/", pprof.Index)
+		//TODO: split this to a different listener, metrics listener
-		http.HandleFunc(state.UrlPath+"/debug/pprof/profile", pprof.Profile)
+		http.HandleFunc(state.urlPath+"/debug/pprof/", pprof.Index)
-		http.HandleFunc(state.UrlPath+"/debug/pprof/symbol", pprof.Symbol)
+		http.HandleFunc(state.urlPath+"/debug/pprof/profile", pprof.Profile)
-		http.HandleFunc(state.UrlPath+"/debug/pprof/trace", pprof.Trace)
+		http.HandleFunc(state.urlPath+"/debug/pprof/symbol", pprof.Symbol)
+		http.HandleFunc(state.urlPath+"/debug/pprof/trace", pprof.Trace)
 	}
 
-	state.Mux.Handle("GET "+state.UrlPath+"/assets/", http.StripPrefix(state.UrlPath, gzipped.FileServer(gzipped.FS(embed.AssetsFs))))
+	state.Mux.Handle("GET "+state.urlPath+"/assets/", http.StripPrefix(state.UrlPath()+"/assets/", gzipped.FileServer(gzipped.FS(embed.AssetsFs))))
 
-	for _, c := range state.Challenges {
+	for _, reg := range state.challenges {
-		if c.ServeStatic != nil {
-			state.Mux.Handle("GET "+c.Path+"/static/", c.ServeStatic)
-		}
 
-		if c.ServeScript != nil {
+		if reg.Handler != nil {
-			state.Mux.Handle("GET "+c.ServeScriptPath, c.ServeScript)
+			state.Mux.Handle(reg.Path+"/", reg.Handler)
-		}
+		} else if reg.Verify != nil {
-
+			// default verify
-		if c.ServeMakeChallenge != nil {
+			state.Mux.HandleFunc(reg.Path+challenge.VerifyChallengeUrlSuffix, challenge.VerifyHandlerFunc(state, reg, nil, nil))
-			state.Mux.Handle(fmt.Sprintf("POST %s/make-challenge", c.Path), c.ServeMakeChallenge)
-		}
-
-		if c.ServeVerifyChallenge != nil {
-			state.Mux.Handle(fmt.Sprintf("GET %s/verify-challenge", c.Path), c.ServeVerifyChallenge)
-		} else if c.Verify != nil {
-			state.Mux.HandleFunc(fmt.Sprintf("GET %s/verify-challenge", c.Path), func(w http.ResponseWriter, r *http.Request) {
-				redirect, err := utils.EnsureNoOpenRedirect(r.FormValue("redirect"))
-				if redirect == "" {
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusInternalServerError, err, "")
-					return
-				}
-
-				err = func() (err error) {
-
-					data := RequestDataFromContext(r.Context())
-
-					key := state.GetChallengeKeyForRequest(c.Name, data.Expires, r)
-					result := r.FormValue("result")
-
-					requestId, err := hex.DecodeString(r.FormValue("requestId"))
-					if err == nil {
-						// override
-						r.Header.Set("X-Away-Id", hex.EncodeToString(requestId))
-					}
-
-					start := time.Now()
-					ok, err := c.Verify(key, result, r)
-					state.addTiming(w, "challenge-verify", "Verify client challenge", time.Since(start))
-
-					if err != nil {
-						state.logger(r).Error(fmt.Errorf("challenge error: %w", err).Error(), "challenge", c.Name, "redirect", redirect)
-						return err
-					} else if !ok {
-						state.logger(r).Warn("challenge failed", "challenge", c.Name, "redirect", redirect)
-						utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-						_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusForbidden, fmt.Errorf("access denied: failed challenge %s", c.Name), redirect)
-						return nil
-					}
-					state.logger(r).Info("challenge passed", "challenge", c.Name, "redirect", redirect)
-
-					token, err := c.IssueChallengeToken(state.privateKey, key, []byte(result), data.Expires)
-					if err != nil {
-						utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-					} else {
-						utils.SetCookie(utils.CookiePrefix+c.Name, token, data.Expires, w)
-					}
-					data.Challenges[c.Id] = challenge.VerifyResultPASS
-
-					http.Redirect(w, r, redirect, http.StatusTemporaryRedirect)
-					return nil
-				}()
-				if err != nil {
-					utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusInternalServerError, err, redirect)
-					return
-				}
-			})
 		}
 	}
 
@@ -426,116 +176,13 @@ func (state *State) setupRoutes() error {
 }
 
 func (state *State) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	r, data := challenge.CreateRequestData(r, state)
 
-	var data RequestData
+	data.EvaluateChallenges(w, r)
-	// generate random id, todo: is this fast?
-	_, _ = rand.Read(data.Id[:])
-	data.RemoteAddress = getRequestAddress(r, state.Settings.ClientIpHeader)
-	data.Challenges = make(map[challenge.Id]challenge.VerifyResult, len(state.Challenges))
-	data.Expires = time.Now().UTC().Add(DefaultValidity).Round(DefaultValidity)
 
-	var ja3n, ja4 string
+	if state.Settings().MainName != "" {
-	if fp := utils.GetTLSFingerprint(r); fp != nil {
+		w.Header().Add("Via", fmt.Sprintf("%s %s@%s", r.Proto, state.Settings().MainName, state.Settings().MainVersion))
-		if ja3nPtr := fp.JA3N(); ja3nPtr != nil {
-			ja3n = ja3nPtr.String()
-			r.Header.Set("X-TLS-Fingerprint-JA3N", ja3n)
-		}
-		if ja4Ptr := fp.JA4(); ja4Ptr != nil {
-			ja4 = ja4Ptr.String()
-			r.Header.Set("X-TLS-Fingerprint-JA4", ja4)
-		}
 	}
 
-	data.ProgramEnv = map[string]any{
-		"host":          r.Host,
-		"method":        r.Method,
-		"remoteAddress": data.RemoteAddress,
-		"userAgent":     r.UserAgent(),
-		"path":          r.URL.Path,
-		"fpJA3N":        ja3n,
-		"fpJA4":         ja4,
-		"query": func() map[string]string {
-			result := make(map[string]string)
-			for k, v := range r.URL.Query() {
-				result[k] = strings.Join(v, ",")
-			}
-			return result
-		}(),
-		"headers": func() map[string]string {
-			result := make(map[string]string)
-			for k, v := range r.Header {
-				result[k] = strings.Join(v, ",")
-			}
-			return result
-		}(),
-	}
-
-	r = r.WithContext(context.WithValue(r.Context(), "_goaway_data", &data))
-
-	for _, c := range state.Challenges {
-		key := state.GetChallengeKeyForRequest(c.Name, data.Expires, r)
-		result, err := c.VerifyChallengeToken(state.publicKey, key, r)
-		if err != nil && !errors.Is(err, http.ErrNoCookie) {
-			// clear invalid cookie
-			utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-		}
-
-		// prevent the challenge if not solved
-		if !result.Ok() && c.Program != nil {
-			out, _, err := c.Program.Eval(data.ProgramEnv)
-			// verify eligibility
-			if err != nil {
-				state.logger(r).Error(err.Error(), "challenge", c.Name)
-			} else if out != nil && out.Type() == types.BoolType {
-				if out.Equal(types.True) != types.True {
-					// skip challenge match!
-					result = challenge.VerifyResultSKIP
-					continue
-				}
-			}
-		}
-		data.Challenges[c.Id] = result
-	}
-
-	r.Header.Set("X-Away-Id", hex.EncodeToString(data.Id[:]))
-	if state.Settings.BackendIpHeader != "" {
-		r.Header.Del(state.Settings.ClientIpHeader)
-		r.Header.Set(state.Settings.BackendIpHeader, data.RemoteAddress.String())
-	}
-	w.Header().Add("Via", fmt.Sprintf("%s %s", r.Proto, "go-away"))
-
-	// send these to client so we consistently get the headers
-	//w.Header().Set("Accept-CH", "Sec-CH-UA, Sec-CH-UA-Platform")
-	//w.Header().Set("Critical-CH", "Sec-CH-UA, Sec-CH-UA-Platform")
-
 	state.Mux.ServeHTTP(w, r)
 }
-
-func RequestDataFromContext(ctx context.Context) *RequestData {
-	return ctx.Value("_goaway_data").(*RequestData)
-}
-
-type RequestData struct {
-	Id            [16]byte
-	ProgramEnv    map[string]any
-	Expires       time.Time
-	Challenges    map[challenge.Id]challenge.VerifyResult
-	RemoteAddress net.IP
-}
-
-func (d *RequestData) HasValidChallenge(id challenge.Id) bool {
-	return d.Challenges[id].Ok()
-}
-
-func (d *RequestData) Headers(state *State, headers http.Header) {
-	for id, result := range d.Challenges {
-		if result.Ok() {
-			c, ok := state.Challenges[id]
-			if !ok {
-				panic("challenge not found")
-			}
-
-			headers.Set(fmt.Sprintf("X-Away-Challenge-%s-Result", c.Name), result.String())
-		}
-	}
-}

lib/interface.go

@@ -0,0 +1,145 @@
+package lib
+
+import (
+	"bytes"
+	"crypto/ed25519"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"git.gammaspectra.live/git/go-away/utils"
+	"github.com/google/cel-go/cel"
+	"log/slog"
+	"maps"
+	"net/http"
+)
+
+// Defines challenge.StateInterface
+
+var _ challenge.StateInterface
+
+func (state *State) ProgramEnv() *cel.Env {
+	return state.programEnv
+}
+
+func (state *State) Client() *http.Client {
+	return state.client
+}
+
+func (state *State) PrivateKey() ed25519.PrivateKey {
+	return state.privateKey
+}
+
+func (state *State) PublicKey() ed25519.PublicKey {
+	return state.publicKey
+}
+
+func (state *State) UrlPath() string {
+	return state.urlPath
+}
+
+func (state *State) ChallengeFailed(r *http.Request, reg *challenge.Registration, err error, redirect string, logger *slog.Logger) {
+	if logger == nil {
+		logger = state.Logger(r)
+	}
+	logger.Warn("challenge failed", "challenge", reg.Name, "err", err, "redirect", redirect)
+
+	//TODO: metrics
+}
+
+func (state *State) ChallengePassed(r *http.Request, reg *challenge.Registration, redirect string, logger *slog.Logger) {
+	if logger == nil {
+		logger = state.Logger(r)
+	}
+	logger.Warn("challenge passed", "challenge", reg.Name, "redirect", redirect)
+
+	//TODO: metrics
+}
+
+func (state *State) ChallengeIssued(r *http.Request, reg *challenge.Registration, redirect string, logger *slog.Logger) {
+	if logger == nil {
+		logger = state.Logger(r)
+	}
+	logger.Info("challenge issued", "challenge", reg.Name, "redirect", redirect)
+
+	//TODO: metrics
+}
+
+func (state *State) Logger(r *http.Request) *slog.Logger {
+	return GetLoggerForRequest(r)
+}
+
+func (state *State) ChallengePage(w http.ResponseWriter, r *http.Request, status int, reg *challenge.Registration, params map[string]any) {
+	data := challenge.RequestDataFromContext(r.Context())
+	input := make(map[string]any)
+	input["Id"] = data.Id.String()
+	input["Random"] = utils.CacheBust()
+	if reg != nil {
+		input["Challenge"] = reg.Name
+		input["Path"] = state.UrlPath()
+	}
+	input["Theme"] = state.Settings().ChallengeTemplateTheme
+
+	maps.Copy(input, params)
+
+	if _, ok := input["Title"]; !ok {
+		input["Title"] = "Checking you are not a bot"
+	}
+
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+
+	buf := bytes.NewBuffer(make([]byte, 0, 8192))
+
+	err := templates["challenge-"+state.Settings().ChallengeTemplate+".gohtml"].Execute(buf, input)
+	if err != nil {
+		state.ErrorPage(w, r, http.StatusInternalServerError, err, "")
+	} else {
+		w.WriteHeader(status)
+		_, _ = w.Write(buf.Bytes())
+	}
+}
+
+func (state *State) ErrorPage(w http.ResponseWriter, r *http.Request, status int, err error, redirect string) {
+	data := challenge.RequestDataFromContext(r.Context())
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+
+	buf := bytes.NewBuffer(make([]byte, 0, 8192))
+
+	err2 := templates["challenge-"+state.Settings().ChallengeTemplate+".gohtml"].Execute(buf, map[string]any{
+		"Id":          data.Id.String(),
+		"Random":      utils.CacheBust(),
+		"Error":       err.Error(),
+		"Path":        state.UrlPath(),
+		"Theme":       state.Settings().ChallengeTemplateTheme,
+		"Title":       "Oh no! " + http.StatusText(status),
+		"HideSpinner": true,
+		"Challenge":   "",
+		"Redirect":    redirect,
+	})
+	if err2 != nil {
+		// nested errors!
+		panic(err2)
+	} else {
+		w.WriteHeader(status)
+		_, _ = w.Write(buf.Bytes())
+	}
+}
+
+func (state *State) GetChallenge(id challenge.Id) (*challenge.Registration, bool) {
+	reg, ok := state.challenges.Get(id)
+	return reg, ok
+}
+
+func (state *State) GetChallenges() challenge.Register {
+	return state.challenges
+}
+
+func (state *State) GetChallengeByName(name string) (*challenge.Registration, bool) {
+	reg, _, ok := state.challenges.GetByName(name)
+	return reg, ok
+}
+func (state *State) Settings() policy.Settings {
+	return state.settings
+}
+
+func (state *State) GetBackend(host string) http.Handler {
+	return utils.SelectHTTPHandler(state.Settings().Backends, host)
+}

lib/poison.go

@@ -1,26 +0,0 @@
-package lib
-
-import (
-	"git.gammaspectra.live/git/go-away/embed"
-	"io"
-	"path"
-	"slices"
-	"strings"
-)
-
-var poisonEncodings = []string{"br", "zstd", "gzip"}
-
-func (state *State) getPoison(mime string, encodings []string) (r io.ReadCloser, encoding string) {
-	for _, encoding = range poisonEncodings {
-		if !slices.Contains(encodings, encoding) {
-			continue
-		}
-
-		p := path.Join("poison", strings.ReplaceAll(mime, "/", "_")+"."+encoding+".poison")
-		f, err := embed.PoisonFs.Open(p)
-		if err == nil {
-			return f, encoding
-		}
-	}
-	return nil, ""
-}

lib/policy/challenge.go

@@ -1,15 +1,15 @@
 package policy
 
+import (
+	"github.com/goccy/go-yaml/ast"
+	"time"
+)
+
 type Challenge struct {
 	Conditions []string `yaml:"conditions"`
-	Mode       string   `yaml:"mode"`
+	Runtime    string   `yaml:"runtime"`
-	Asset      *string  `yaml:"asset,omitempty"`
-	Url        *string  `yaml:"url,omitempty"`
 
-	Parameters map[string]string `json:"parameters,omitempty"`
+	Duration time.Duration `yaml:"duration"`
-	Runtime    struct {
+
-		Mode        string  `yaml:"mode,omitempty"`
+	Parameters ast.Node `yaml:"parameters,omitempty"`
-		Asset       string  `yaml:"asset,omitempty"`
-		Probability float64 `yaml:"probability,omitempty"`
-	} `yaml:"runtime"`
 }

lib/policy/network.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"git.gammaspectra.live/git/go-away/utils"
 	"github.com/itchyny/gojq"
 	"io"
 	"net"
@@ -13,16 +14,20 @@ import (
 )
 
 type Network struct {
+	// Fetches
 	Url  *string `yaml:"url,omitempty"`
 	File *string `yaml:"file,omitempty"`
+	ASN  *int    `yaml:"asn,omitempty"`
 
+	// Filtering
 	JqPath *string `yaml:"jq-path,omitempty"`
 	Regex  *string `yaml:"regex,omitempty"`
 
 	Prefixes []string `yaml:"prefixes,omitempty"`
 }
 
-func (n Network) FetchPrefixes(c *http.Client) (output []net.IPNet, err error) {
+func (n Network) FetchPrefixes(c *http.Client, whois *utils.RADb) (output []net.IPNet, err error) {
+
 	if len(n.Prefixes) > 0 {
 		for _, prefix := range n.Prefixes {
 			ipNet, err := parseCIDROrIP(prefix)
@@ -51,6 +56,12 @@ func (n Network) FetchPrefixes(c *http.Client) (output []net.IPNet, err error) {
 		}
 		defer file.Close()
 		reader = file
+	} else if n.ASN != nil {
+		result, err := whois.FetchASNets(*n.ASN)
+		if err != nil {
+			return nil, fmt.Errorf("failed to fetch ASN %d: %v", *n.ASN, err)
+		}
+		return result, nil
 	} else {
 		if len(output) > 0 {
 			return output, nil
@@ -115,3 +126,30 @@ func (n Network) FetchPrefixes(c *http.Client) (output []net.IPNet, err error) {
 	}
 	return output, nil
 }
+
+func parseCIDROrIP(value string) (net.IPNet, error) {
+	_, ipNet, err := net.ParseCIDR(value)
+	if err != nil {
+		ip := net.ParseIP(value)
+		if ip == nil {
+			return net.IPNet{}, fmt.Errorf("failed to parse CIDR: %s", err)
+		}
+
+		if ip4 := ip.To4(); ip4 != nil {
+			return net.IPNet{
+				IP: ip4,
+				// single ip
+				Mask: net.CIDRMask(len(ip4)*8, len(ip4)*8),
+			}, nil
+		}
+		return net.IPNet{
+			IP: ip,
+			// single ip
+			Mask: net.CIDRMask(len(ip)*8, len(ip)*8),
+		}, nil
+	} else if ipNet != nil {
+		return *ipNet, nil
+	} else {
+		return net.IPNet{}, errors.New("invalid CIDR")
+	}
+}

lib/policy/options.go

@@ -0,0 +1,22 @@
+package policy
+
+import (
+	"git.gammaspectra.live/git/go-away/utils"
+	"net/http"
+)
+
+type Settings struct {
+	Cache                  utils.Cache
+	Backends               map[string]http.Handler
+	PrivateKeySeed         []byte
+	Debug                  bool
+	MainName               string
+	MainVersion            string
+	PackageName            string
+	ChallengeTemplate      string
+	ChallengeTemplateTheme string
+	ClientIpHeader         string
+	BackendIpHeader        string
+
+	ChallengeResponseCode int
+}

lib/policy/policy.go

@@ -1,38 +1,13 @@
 package policy
 
 import (
-	"errors"
+	"bytes"
-	"fmt"
+	"github.com/goccy/go-yaml"
-	"net"
+	"io"
+	"os"
+	"path"
 )
 
-func parseCIDROrIP(value string) (net.IPNet, error) {
-	_, ipNet, err := net.ParseCIDR(value)
-	if err != nil {
-		ip := net.ParseIP(value)
-		if ip == nil {
-			return net.IPNet{}, fmt.Errorf("failed to parse CIDR: %s", err)
-		}
-
-		if ip4 := ip.To4(); ip4 != nil {
-			return net.IPNet{
-				IP: ip4,
-				// single ip
-				Mask: net.CIDRMask(len(ip4)*8, len(ip4)*8),
-			}, nil
-		}
-		return net.IPNet{
-			IP: ip,
-			// single ip
-			Mask: net.CIDRMask(len(ip)*8, len(ip)*8),
-		}, nil
-	} else if ipNet != nil {
-		return *ipNet, nil
-	} else {
-		return net.IPNet{}, errors.New("invalid CIDR")
-	}
-}
-
 type Policy struct {
 
 	// Networks map of networks and prefixes to be loaded
@@ -43,8 +18,70 @@ type Policy struct {
 	Challenges map[string]Challenge `yaml:"challenges"`
 
 	Rules []Rule `yaml:"rules"`
-
+}
-	// Backends
+
-	// Deprecated
+func NewPolicy(r io.Reader, snippetsDirectory string) (*Policy, error) {
-	Backends map[string]string `json:"backends"`
+	var p Policy
+	p.Networks = make(map[string][]Network)
+	p.Conditions = make(map[string][]string)
+	p.Challenges = make(map[string]Challenge)
+
+	if snippetsDirectory == "" {
+		err := yaml.NewDecoder(r).Decode(&p)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		err := yaml.NewDecoder(r, yaml.ReferenceDirs(snippetsDirectory)).Decode(&p)
+		if err != nil {
+			return nil, err
+		}
+
+		// add specific entries from snippets
+		entries, err := os.ReadDir(snippetsDirectory)
+		if err != nil {
+			return nil, err
+		}
+		for _, entry := range entries {
+			var entryPolicy Policy
+			if !entry.IsDir() {
+				entryData, err := os.ReadFile(path.Join(snippetsDirectory, entry.Name()))
+				if err != nil {
+					return nil, err
+				}
+				err = yaml.NewDecoder(bytes.NewReader(entryData), yaml.ReferenceDirs(snippetsDirectory)).Decode(&entryPolicy)
+				if err != nil {
+					return nil, err
+				}
+
+				// add networks / conditions / challenges definitions if they don't exist already
+
+				for k, v := range entryPolicy.Networks {
+					// add network if policy entry does not exist
+					_, ok := p.Networks[k]
+					if !ok {
+						p.Networks[k] = v
+					}
+				}
+
+				for k, v := range entryPolicy.Conditions {
+					// add condition if policy entry does not exist
+					_, ok := p.Conditions[k]
+					if !ok {
+						p.Conditions[k] = v
+					}
+				}
+
+				for k, v := range entryPolicy.Challenges {
+					// add challenge if policy entry does not exist
+					_, ok := p.Challenges[k]
+					if !ok {
+						p.Challenges[k] = v
+					}
+				}
+
+			}
+		}
+	}
+	return &p, nil
 }

lib/policy/rule.go

@@ -1,22 +1,40 @@
 package policy
 
+import "github.com/goccy/go-yaml/ast"
+
 type RuleAction string
 
 const (
-	RuleActionPASS      RuleAction = "PASS"
+	// RuleActionNONE Does nothing. Useful for parent rules when children want to be specified
-	RuleActionDENY      RuleAction = "DENY"
+	RuleActionNONE RuleAction = "NONE"
-	RuleActionBLOCK     RuleAction = "BLOCK"
+	// RuleActionPASS Passes the connection immediately
+	RuleActionPASS RuleAction = "PASS"
+	// RuleActionDENY Denies the connection with a fancy page
+	RuleActionDENY RuleAction = "DENY"
+	// RuleActionBLOCK Denies the connection with a response code
+	RuleActionBLOCK RuleAction = "BLOCK"
+	// RuleActionCODE Returns a specified HTTP code
+	RuleActionCODE RuleAction = "CODE"
+
+	// RuleActionDROP Drops the connection without sending a reply
+	RuleActionDROP RuleAction = "DROP"
+
+	// RuleActionCHALLENGE Issues a challenge that when passed, passes the connection
 	RuleActionCHALLENGE RuleAction = "CHALLENGE"
-	RuleActionCHECK     RuleAction = "CHECK"
+	// RuleActionCHECK Issues a challenge that when passed, continues checking rules
-	RuleActionPOISON    RuleAction = "POISON"
+	RuleActionCHECK RuleAction = "CHECK"
+
+	// RuleActionPROXY Proxies request to a backend, with optional path replacements
+	RuleActionPROXY RuleAction = "PROXY"
 )
 
 type Rule struct {
 	Name       string   `yaml:"name"`
-	Host       *string  `yaml:"host"`
 	Conditions []string `yaml:"conditions"`
 
 	Action string `yaml:"action"`
 
-	Challenges []string `yaml:"challenges"`
+	Settings ast.Node `yaml:"settings"`
+
+	Children []Rule `yaml:"children"`
 }

lib/rule.go

@@ -0,0 +1,141 @@
+package lib
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"git.gammaspectra.live/git/go-away/lib/action"
+	"git.gammaspectra.live/git/go-away/lib/challenge"
+	"git.gammaspectra.live/git/go-away/lib/condition"
+	"git.gammaspectra.live/git/go-away/lib/policy"
+	"github.com/google/cel-go/cel"
+	"github.com/google/cel-go/common/types"
+	"github.com/google/cel-go/common/types/ref"
+	"log/slog"
+	"net/http"
+	"strings"
+)
+
+type RuleState struct {
+	Name string
+	Hash string
+
+	Condition cel.Program
+
+	Action  policy.RuleAction
+	Handler action.Handler
+
+	Children []RuleState
+}
+
+func NewRuleState(state challenge.StateInterface, r policy.Rule, replacer *strings.Replacer, parent *RuleState) (RuleState, error) {
+	fp := sha256.Sum256(state.PrivateKey())
+	hasher := sha256.New()
+	if parent != nil {
+		hasher.Write([]byte(parent.Name))
+		hasher.Write([]byte{0})
+		r.Name = fmt.Sprintf("%s/%s", parent.Name, r.Name)
+	}
+	hasher.Write([]byte(r.Name))
+	hasher.Write([]byte{0})
+	hasher.Write(fp[:])
+	sum := hasher.Sum(nil)
+
+	rule := RuleState{
+		Name:   r.Name,
+		Hash:   hex.EncodeToString(sum[:10]),
+		Action: policy.RuleAction(strings.ToUpper(r.Action)),
+	}
+
+	newHandler, ok := action.Register[rule.Action]
+	if !ok {
+		return RuleState{}, fmt.Errorf("unknown action %s", r.Action)
+	}
+
+	actionHandler, err := newHandler(state, rule.Name, rule.Hash, r.Settings)
+	if err != nil {
+		return RuleState{}, err
+	}
+	rule.Handler = actionHandler
+
+	if len(r.Conditions) > 0 {
+		// allow nesting
+		var conditions []string
+		for _, cond := range r.Conditions {
+			cond = replacer.Replace(cond)
+			conditions = append(conditions, cond)
+		}
+
+		ast, err := condition.FromStrings(state.ProgramEnv(), condition.OperatorOr, conditions...)
+		if err != nil {
+			return RuleState{}, fmt.Errorf("error compiling conditions: %w", err)
+		}
+
+		program, err := condition.Program(state.ProgramEnv(), ast)
+		if err != nil {
+			return RuleState{}, fmt.Errorf("error compiling program: %w", err)
+		}
+		rule.Condition = program
+	}
+
+	if len(r.Children) > 0 {
+		for _, child := range r.Children {
+			childRule, err := NewRuleState(state, child, replacer, &rule)
+			if err != nil {
+				return RuleState{}, fmt.Errorf("child %s: %w", child.Name, err)
+			}
+			rule.Children = append(rule.Children, childRule)
+		}
+	}
+
+	return rule, nil
+}
+
+func (rule RuleState) Evaluate(logger *slog.Logger, w http.ResponseWriter, r *http.Request, done func() http.Handler) (next bool, err error) {
+	data := challenge.RequestDataFromContext(r.Context())
+	var out ref.Val
+
+	lg := logger.With("rule", rule.Name, "rule_hash", rule.Hash, "action", string(rule.Action))
+	if rule.Condition != nil {
+		out, _, err = rule.Condition.Eval(data)
+	} else {
+		// default true
+		out = types.Bool(true)
+	}
+	if err != nil {
+		lg.Error(err.Error())
+		return false, fmt.Errorf("error: evaluating administrative rule %s/%s: %w", data.Id.String(), rule.Hash, err)
+	} else if out != nil && out.Type() == types.BoolType {
+		if out.Equal(types.True) == types.True {
+			next, err = rule.Handler.Handle(lg, w, r, func() http.Handler {
+				r.Header.Set("X-Away-Rule", rule.Name)
+				r.Header.Set("X-Away-Hash", rule.Hash)
+				r.Header.Set("X-Away-Action", string(rule.Action))
+
+				return done()
+			})
+			if err != nil {
+				lg.Error(err.Error())
+				return false, fmt.Errorf("error: executing administrative rule %s/%s: %w", data.Id.String(), rule.Hash, err)
+			}
+
+			if !next {
+				return next, nil
+			}
+
+			for _, child := range rule.Children {
+				next, err = child.Evaluate(logger, w, r, done)
+				if err != nil {
+					lg.Error(err.Error())
+					return false, fmt.Errorf("error: executing administrative rule %s/%s: %w", data.Id.String(), rule.Hash, err)
+				}
+
+				if !next {
+					return next, nil
+				}
+			}
+		}
+	}
+
+	return true, nil
+}

lib/state.go

@@ -1,157 +1,86 @@
 package lib
 
 import (
-	"codeberg.org/meta/gzipped/v2"
-	"context"
 	"crypto/ed25519"
 	"crypto/rand"
-	"crypto/sha256"
-	"crypto/subtle"
-	"encoding/hex"
 	"encoding/json"
-	"errors"
 	"fmt"
-	"git.gammaspectra.live/git/go-away/embed"
 	"git.gammaspectra.live/git/go-away/lib/challenge"
-	"git.gammaspectra.live/git/go-away/lib/challenge/wasm"
-	"git.gammaspectra.live/git/go-away/lib/challenge/wasm/interface"
 	"git.gammaspectra.live/git/go-away/lib/condition"
 	"git.gammaspectra.live/git/go-away/lib/policy"
 	"git.gammaspectra.live/git/go-away/utils"
-	"git.gammaspectra.live/git/go-away/utils/inline"
 	"github.com/google/cel-go/cel"
-	"github.com/tetratelabs/wazero/api"
 	"github.com/yl2chen/cidranger"
-	"html/template"
-	"io"
-	"io/fs"
 	"log/slog"
 	"net"
 	"net/http"
 	"net/http/httputil"
-	"net/url"
 	"os"
 	"path"
-	"strconv"
 	"strings"
-	"sync"
-	"sync/atomic"
 	"time"
 )
 
 type State struct {
-	Client   *http.Client
+	client  *http.Client
-	Settings StateSettings
+	radb    *utils.RADb
-	UrlPath  string
+	urlPath string
-	Mux      *http.ServeMux
 
-	Networks map[string]cidranger.Ranger
+	programEnv *cel.Env
-
-	Wasm *wasm.Runner
-
-	Challenges map[challenge.Id]challenge.Challenge
-
-	RulesEnv *cel.Env
-
-	Rules []RuleState
 
 	publicKey  ed25519.PublicKey
 	privateKey ed25519.PrivateKey
 
-	Poison map[string][]byte
+	settings policy.Settings
 
-	ChallengeSolve sync.Map
+	networks map[string]cidranger.Ranger
 
-	DecayMap *utils.DecayMap[[net.IPv6len]byte, utils.DNSBLResponse]
+	challenges challenge.Register
+
+	rules []RuleState
 
 	close chan struct{}
+
+	Mux *http.ServeMux
 }
 
-func (state *State) AwaitChallenge(key []byte, ctx context.Context) challenge.VerifyResult {
+func NewState(p policy.Policy, settings policy.Settings) (handler http.Handler, err error) {
-	ctx, cancel := context.WithCancel(ctx)
-	defer cancel()
-
-	var result atomic.Int64
-
-	state.ChallengeSolve.Store(string(key), ChallengeCallback(func(receivedResult challenge.VerifyResult) {
-		result.Store(int64(receivedResult))
-		cancel()
-	}))
-
-	<-ctx.Done()
-
-	return challenge.VerifyResult(result.Load())
-}
-
-func (state *State) SolveChallenge(key []byte, result challenge.VerifyResult) {
-	if f, ok := state.ChallengeSolve.LoadAndDelete(string(key)); ok && f != nil {
-		if cb, ok := f.(ChallengeCallback); ok {
-			cb(result)
-		}
-	}
-}
-
-type ChallengeCallback func(result challenge.VerifyResult)
-
-type RuleState struct {
-	Name string
-	Hash string
-
-	Host *string
-
-	Program    cel.Program
-	Action     policy.RuleAction
-	Challenges []challenge.Id
-}
-
-type StateSettings struct {
-	Backends               map[string]http.Handler
-	PrivateKeySeed         []byte
-	Debug                  bool
-	PackageName            string
-	ChallengeTemplate      string
-	ChallengeTemplateTheme string
-	ClientIpHeader         string
-	BackendIpHeader        string
-	DNSBL                  *utils.DNSBL
-}
-
-func NewState(p policy.Policy, settings StateSettings) (handler http.Handler, err error) {
 	state := new(State)
 	state.close = make(chan struct{})
-	state.Settings = settings
+	state.settings = settings
-	state.Client = &http.Client{
+	state.client = &http.Client{
 		CheckRedirect: func(req *http.Request, via []*http.Request) error {
 			return http.ErrUseLastResponse
 		},
 	}
-	state.UrlPath = "/.well-known/." + state.Settings.PackageName
+	state.radb, err = utils.NewRADb()
-
+	if err != nil {
-	if state.Settings.DNSBL != nil {
+		return nil, fmt.Errorf("failed to initialize RADb client: %w", err)
-		state.DecayMap = utils.NewDecayMap[[net.IPv6len]byte, utils.DNSBLResponse]()
 	}
 
+	state.urlPath = "/.well-known/." + state.Settings().PackageName
+
 	// set a reasonable configuration for default http proxy if there is none
-	for _, backend := range state.Settings.Backends {
+	for _, backend := range state.Settings().Backends {
 		if proxy, ok := backend.(*httputil.ReverseProxy); ok {
 			if proxy.ErrorHandler == nil {
 				proxy.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
-					state.logger(r).Error(err.Error())
+					state.Logger(r).Error(err.Error())
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusBadGateway, err, "")
+					state.ErrorPage(w, r, http.StatusBadGateway, err, "")
 				}
 			}
 		}
 	}
 
-	if len(state.Settings.PrivateKeySeed) > 0 {
+	if len(state.Settings().PrivateKeySeed) > 0 {
-		if len(state.Settings.PrivateKeySeed) != ed25519.SeedSize {
+		if len(state.Settings().PrivateKeySeed) != ed25519.SeedSize {
-			return nil, fmt.Errorf("invalid private key seed length: %d", len(state.Settings.PrivateKeySeed))
+			return nil, fmt.Errorf("invalid private key seed length: %d", len(state.Settings().PrivateKeySeed))
 		}
 
-		state.privateKey = ed25519.NewKeyFromSeed(state.Settings.PrivateKeySeed)
+		state.privateKey = ed25519.NewKeyFromSeed(state.Settings().PrivateKeySeed)
 		state.publicKey = state.privateKey.Public().(ed25519.PublicKey)
 
-		clear(state.Settings.PrivateKeySeed)
+		clear(state.settings.PrivateKeySeed)
 
 	} else {
 		state.publicKey, state.privateKey, err = ed25519.GenerateKey(rand.Reader)
@@ -160,53 +89,99 @@ func NewState(p policy.Policy, settings StateSettings) (handler http.Handler, er
 		}
 	}
 
-	privateKeyFingerprint := sha256.Sum256(state.privateKey)
+	if state.Settings().ChallengeTemplate == "" {
-
+		state.settings.ChallengeTemplate = "anubis"
-	if state.Settings.ChallengeTemplate == "" {
-		state.Settings.ChallengeTemplate = "anubis"
 	}
 
-	if templates["challenge-"+state.Settings.ChallengeTemplate+".gohtml"] == nil {
+	if templates["challenge-"+state.Settings().ChallengeTemplate+".gohtml"] == nil {
 
-		if data, err := os.ReadFile(state.Settings.ChallengeTemplate); err == nil && len(data) > 0 {
+		if data, err := os.ReadFile(state.Settings().ChallengeTemplate); err == nil && len(data) > 0 {
-			name := path.Base(state.Settings.ChallengeTemplate)
+			name := path.Base(state.Settings().ChallengeTemplate)
 			err := initTemplate(name, string(data))
 			if err != nil {
 				return nil, fmt.Errorf("error loading template %s: %w", settings.ChallengeTemplate, err)
 			}
-			state.Settings.ChallengeTemplate = name
+			state.settings.ChallengeTemplate = name
 		}
 
 		return nil, fmt.Errorf("no template defined for %s", settings.ChallengeTemplate)
 	}
 
-	state.Networks = make(map[string]cidranger.Ranger)
+	state.networks = make(map[string]cidranger.Ranger)
+
+	networkCache := utils.CachePrefix(state.Settings().Cache, "networks/")
+
 	for k, network := range p.Networks {
+
 		ranger := cidranger.NewPCTrieRanger()
-		for _, e := range network {
+		for i, e := range network {
-			if e.Url != nil {
+			prefixes, err := func() ([]net.IPNet, error) {
-				slog.Debug("loading network url list", "network", k, "url", *e.Url)
+				var useCache bool
-			}
+				if e.Url != nil {
-			prefixes, err := e.FetchPrefixes(state.Client)
+					slog.Debug("loading network url list", "network", k, "url", *e.Url)
-			if err != nil {
+					useCache = true
-				slog.Error("error fetching network url list", "network", k, "url", *e.Url)
+				} else if e.ASN != nil {
-				continue
+					slog.Debug("loading ASN", "network", k, "asn", *e.ASN)
-			}
+					useCache = true
+				}
+
+				cacheKey := fmt.Sprintf("%s-%d", k, i)
+				var cached []net.IPNet
+				if useCache && networkCache != nil {
+					//TODO: add randomness
+					cachedData, err := networkCache.Get(cacheKey, time.Hour*24)
+					var l []string
+					_ = json.Unmarshal(cachedData, &l)
+					for _, n := range l {
+						_, ipNet, err := net.ParseCIDR(n)
+						if err == nil {
+							cached = append(cached, *ipNet)
+						}
+					}
+					if err == nil {
+						// use
+						return cached, nil
+
+					}
+				}
+
+				prefixes, err := e.FetchPrefixes(state.client, state.radb)
+				if err != nil {
+					if len(cached) > 0 {
+						// use cached meanwhile
+						return cached, err
+					}
+					return nil, err
+				}
+				if useCache && networkCache != nil {
+					var l []string
+					for _, n := range prefixes {
+						l = append(l, n.String())
+					}
+					cachedData, err := json.Marshal(l)
+					if err == nil {
+						_ = networkCache.Set(cacheKey, cachedData)
+					}
+				}
+				return prefixes, nil
+			}()
 			for _, prefix := range prefixes {
 				err = ranger.Insert(cidranger.NewBasicRangerEntry(prefix))
 				if err != nil {
 					return nil, fmt.Errorf("networks %s: error inserting prefix %s: %v", k, prefix.String(), err)
 				}
 			}
+			if err != nil {
+				slog.Error("error loading network list", "network", k, "url", *e.Url, "error", err)
+				continue
+			}
 		}
 
 		slog.Warn("loaded network prefixes", "network", k, "count", ranger.Len())
 
-		state.Networks[k] = ranger
+		state.networks[k] = ranger
 	}
 
-	state.Wasm = wasm.NewRunner(true)
-
 	err = state.initConditions()
 	if err != nil {
 		return nil, err
@@ -214,7 +189,7 @@ func NewState(p policy.Policy, settings StateSettings) (handler http.Handler, er
 
 	var replacements []string
 	for k, entries := range p.Conditions {
-		ast, err := condition.FromStrings(state.RulesEnv, condition.OperatorOr, entries...)
+		ast, err := condition.FromStrings(state.programEnv, condition.OperatorOr, entries...)
 		if err != nil {
 			return nil, fmt.Errorf("conditions %s: error compiling conditions: %v", k, err)
 		}
@@ -229,563 +204,26 @@ func NewState(p policy.Policy, settings StateSettings) (handler http.Handler, er
 	}
 	conditionReplacer := strings.NewReplacer(replacements...)
 
-	state.Challenges = make(map[challenge.Id]challenge.Challenge)
+	state.challenges = make(challenge.Register)
-
-	idCounter := challenge.Id(1)
 
 	//TODO: move this to self-contained challenge files
-	for challengeName, p := range p.Challenges {
+	for challengeName, pol := range p.Challenges {
-
+		_, _, err := state.challenges.Create(state, challengeName, pol, conditionReplacer)
-		// allow nesting
+		if err != nil {
-		var conditions []string
+			return nil, fmt.Errorf("challenge %s: %w", challengeName, err)
-		for _, cond := range p.Conditions {
-			cond = conditionReplacer.Replace(cond)
-			conditions = append(conditions, cond)
 		}
-
-		var program cel.Program
-		if len(conditions) > 0 {
-			ast, err := condition.FromStrings(state.RulesEnv, condition.OperatorOr, conditions...)
-			if err != nil {
-				return nil, fmt.Errorf("challenge %s: error compiling conditions: %v", challengeName, err)
-			}
-			program, err = state.RulesEnv.Program(ast)
-			if err != nil {
-				return nil, fmt.Errorf("challenge %s: error compiling program: %v", challengeName, err)
-			}
-		}
-
-		c := challenge.Challenge{
-			Id:                idCounter,
-			Program:           program,
-			Name:              challengeName,
-			Path:              fmt.Sprintf("%s/challenge/%s", state.UrlPath, challengeName),
-			VerifyProbability: p.Runtime.Probability,
-		}
-		idCounter++
-
-		if c.VerifyProbability <= 0 {
-			//10% default
-			c.VerifyProbability = 0.1
-		} else if c.VerifyProbability > 1.0 {
-			c.VerifyProbability = 1.0
-		}
-
-		assetPath := c.Path + "/static/"
-		subFs, err := fs.Sub(embed.ChallengeFs, fmt.Sprintf("challenge/%s/static", challengeName))
-		if err == nil {
-			c.ServeStatic = http.StripPrefix(
-				assetPath,
-				gzipped.FileServer(gzipped.FS(subFs)),
-			)
-		}
-
-		switch p.Mode {
-		default:
-			return nil, fmt.Errorf("unknown challenge mode: %s", p.Mode)
-		case "http":
-			if p.Url == nil {
-				return nil, fmt.Errorf("challenge %s: missing url", challengeName)
-			}
-			method := p.Parameters["http-method"]
-			if method == "" {
-				method = "GET"
-			}
-
-			httpCode, _ := strconv.Atoi(p.Parameters["http-code"])
-			if httpCode == 0 {
-				httpCode = http.StatusOK
-			}
-
-			expectedCookie := p.Parameters["http-cookie"]
-
-			c.Verify = func(key []byte, result string, r *http.Request) (bool, error) {
-				var cookieValue string
-				if expectedCookie != "" {
-					if cookie, err := r.Cookie(expectedCookie); err != nil || cookie == nil {
-						// skip check if we don't have cookie or it's expired
-						return false, nil
-					} else {
-						cookieValue = cookie.Value
-					}
-				}
-				// bind hash of cookie contents
-				sum := sha256.New()
-				sum.Write([]byte(cookieValue))
-				sum.Write([]byte{0})
-				sum.Write(key)
-				sum.Write([]byte{0})
-				sum.Write(state.publicKey)
-
-				if subtle.ConstantTimeCompare(sum.Sum(nil), []byte(result)) == 1 {
-					return true, nil
-				}
-				return false, nil
-			}
-
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-
-				data := RequestDataFromContext(r.Context())
-
-				if result := data.Challenges[c.Id]; result.Ok() {
-					return challenge.ResultPass
-				}
-
-				var cookieValue string
-				if expectedCookie != "" {
-					if cookie, err := r.Cookie(expectedCookie); err != nil || cookie == nil {
-						// skip check if we don't have cookie or it's expired
-						return challenge.ResultContinue
-					} else {
-						cookieValue = cookie.Value
-					}
-				}
-
-				request, err := http.NewRequest(method, *p.Url, nil)
-				if err != nil {
-					return challenge.ResultContinue
-				}
-
-				request.Header = r.Header
-				response, err := state.Client.Do(request)
-				if err != nil {
-					return challenge.ResultContinue
-				}
-				defer response.Body.Close()
-				defer io.Copy(io.Discard, response.Body)
-
-				if response.StatusCode != httpCode {
-					utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-					// continue other challenges!
-
-					//TODO: negatively cache failure
-
-					return challenge.ResultContinue
-				} else {
-					// bind hash of cookie contents
-					sum := sha256.New()
-					sum.Write([]byte(cookieValue))
-					sum.Write([]byte{0})
-					sum.Write(key)
-					sum.Write([]byte{0})
-					sum.Write(state.publicKey)
-					token, err := c.IssueChallengeToken(state.privateKey, key, sum.Sum(nil), expiry)
-					if err != nil {
-						utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-					} else {
-						utils.SetCookie(utils.CookiePrefix+challengeName, token, expiry, w)
-					}
-
-					data.Challenges[c.Id] = challenge.VerifyResultPASS
-
-					// we passed it!
-					return challenge.ResultPass
-				}
-			}
-
-		case "cookie":
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-				if chall := r.URL.Query().Get("__goaway_challenge"); chall == challengeName {
-					state.logger(r).Warn("challenge failed", "challenge", c.Name)
-					utils.ClearCookie(utils.CookiePrefix+c.Name, w)
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusForbidden, fmt.Errorf("access denied: failed challenge %s", c.Name), "")
-					return challenge.ResultStop
-				}
-
-				token, err := c.IssueChallengeToken(state.privateKey, key, nil, expiry)
-				if err != nil {
-					utils.ClearCookie(utils.CookiePrefix+challengeName, w)
-				} else {
-					utils.SetCookie(utils.CookiePrefix+challengeName, token, expiry, w)
-				}
-
-				// self redirect!
-				uri, err := url.ParseRequestURI(r.URL.String())
-				values := uri.Query()
-				values.Set("__goaway_challenge", challengeName)
-				uri.RawQuery = values.Encode()
-
-				http.Redirect(w, r, uri.String(), http.StatusTemporaryRedirect)
-				return challenge.ResultStop
-			}
-		case "meta-refresh":
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-				redirectUri := new(url.URL)
-				redirectUri.Path = c.Path + "/verify-challenge"
-
-				values := make(url.Values)
-				values.Set("result", hex.EncodeToString(key))
-				values.Set("redirect", r.URL.String())
-				values.Set("requestId", r.Header.Get("X-Away-Id"))
-
-				redirectUri.RawQuery = values.Encode()
-
-				_ = state.challengePage(w, r.Header.Get("X-Away-Id"), http.StatusTeapot, "", map[string]any{
-					"Meta": map[string]string{
-						"refresh": "0; url=" + redirectUri.String(),
-					},
-				})
-
-				return challenge.ResultStop
-			}
-		case "header-refresh":
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-				redirectUri := new(url.URL)
-				redirectUri.Path = c.Path + "/verify-challenge"
-
-				values := make(url.Values)
-				values.Set("result", hex.EncodeToString(key))
-				values.Set("redirect", r.URL.String())
-				values.Set("requestId", r.Header.Get("X-Away-Id"))
-
-				redirectUri.RawQuery = values.Encode()
-
-				// self redirect!
-				w.Header().Set("Refresh", "0; url="+redirectUri.String())
-
-				_ = state.challengePage(w, r.Header.Get("X-Away-Id"), http.StatusTeapot, "", nil)
-
-				return challenge.ResultStop
-			}
-		case "preload-link":
-			deadline, _ := time.ParseDuration(p.Parameters["preload-early-hint-deadline"])
-			if deadline == 0 {
-				deadline = time.Second * 3
-			}
-
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-				// this only works on HTTP/2 and HTTP/3
-
-				if r.ProtoMajor < 2 {
-					// this can happen if we are an upgraded request from HTTP/1.1 to HTTP/2 in H2C
-					if _, ok := w.(http.Pusher); !ok {
-						return challenge.ResultContinue
-					}
-				}
-
-				data := RequestDataFromContext(r.Context())
-				redirectUri := new(url.URL)
-				redirectUri.Scheme = getRequestScheme(r)
-				redirectUri.Host = r.Host
-				redirectUri.Path = c.Path + "/verify-challenge"
-
-				values := make(url.Values)
-				values.Set("result", hex.EncodeToString(key))
-				values.Set("requestId", r.Header.Get("X-Away-Id"))
-
-				redirectUri.RawQuery = values.Encode()
-
-				w.Header().Set("Link", fmt.Sprintf("<%s>; rel=\"preload\"; as=\"style\"; fetchpriority=high", redirectUri.String()))
-				defer func() {
-					// remove old header so it won't show on response!
-					w.Header().Del("Link")
-				}()
-				w.WriteHeader(http.StatusEarlyHints)
-
-				ctx, cancel := context.WithTimeout(r.Context(), deadline)
-				defer cancel()
-				if result := state.AwaitChallenge(key, ctx); result.Ok() {
-					data.Challenges[c.Id] = challenge.VerifyResultPASS
-
-					// this should serve!
-					return challenge.ResultPass
-				}
-
-				data.Challenges[c.Id] = challenge.VerifyResultFAIL
-				// we failed, continue
-				return challenge.ResultContinue
-			}
-		case "resource-load":
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-				redirectUri := new(url.URL)
-				redirectUri.Path = c.Path + "/verify-challenge"
-
-				values := make(url.Values)
-				values.Set("result", hex.EncodeToString(key))
-				values.Set("requestId", r.Header.Get("X-Away-Id"))
-
-				redirectUri.RawQuery = values.Encode()
-
-				// self redirect!
-				w.Header().Set("Refresh", "2; url="+r.URL.String())
-
-				_ = state.challengePage(w, r.Header.Get("X-Away-Id"), http.StatusTeapot, "", map[string]any{
-					"Tags": []template.HTML{
-						template.HTML(fmt.Sprintf("<link href=\"%s\" rel=\"stylesheet\" crossorigin=\"use-credentials\">", redirectUri.String())),
-					},
-				})
-
-				return challenge.ResultStop
-			}
-		case "js":
-			c.ServeChallenge = func(w http.ResponseWriter, r *http.Request, key []byte, expiry time.Time) challenge.Result {
-				_ = state.challengePage(w, r.Header.Get("X-Away-Id"), http.StatusTeapot, challengeName, nil)
-
-				return challenge.ResultStop
-			}
-			c.ServeScriptPath = c.Path + "/challenge.mjs"
-			c.ServeScript = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				params, _ := json.Marshal(p.Parameters)
-
-				//TODO: move this to http.go as a template
-				w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
-				w.Header().Set("Content-Type", "text/javascript; charset=utf-8")
-				w.WriteHeader(http.StatusOK)
-
-				err := templates["challenge.mjs"].Execute(w, map[string]any{
-					"Path":       c.Path,
-					"Parameters": string(params),
-					"Random":     cacheBust,
-					"Challenge":  challengeName,
-					"ChallengeScript": func() string {
-						if p.Asset != nil {
-							return assetPath + *p.Asset
-						} else if p.Url != nil {
-							return *p.Url
-						} else {
-							panic("not implemented")
-						}
-					}(),
-				})
-				if err != nil {
-					//TODO: log
-				}
-			})
-		}
-
-		// how to runtime
-		switch p.Runtime.Mode {
-		default:
-			return nil, fmt.Errorf("unknown challenge runtime mode: %s", p.Runtime.Mode)
-		case "":
-		case "http":
-		case "key":
-			mimeType := p.Parameters["key-mime"]
-			if mimeType == "" {
-				mimeType = "text/html; charset=utf-8"
-			}
-
-			httpCode, _ := strconv.Atoi(p.Parameters["key-code"])
-			if httpCode == 0 {
-				httpCode = http.StatusTemporaryRedirect
-			}
-
-			var content []byte
-			if data, ok := p.Parameters["key-content"]; ok {
-				content = []byte(data)
-			}
-
-			c.Verify = func(key []byte, result string, r *http.Request) (bool, error) {
-				resultBytes, err := hex.DecodeString(result)
-				if err != nil {
-					return false, err
-				}
-
-				if subtle.ConstantTimeCompare(resultBytes, key) != 1 {
-					return false, nil
-				}
-				return true, nil
-			}
-
-			c.ServeVerifyChallenge = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-
-				redirect, err := utils.EnsureNoOpenRedirect(r.FormValue("redirect"))
-				if err != nil {
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusBadRequest, err, "")
-					return
-				}
-
-				err = func() (err error) {
-
-					data := RequestDataFromContext(r.Context())
-
-					key := state.GetChallengeKeyForRequest(challengeName, data.Expires, r)
-					result := r.FormValue("result")
-
-					requestId, err := hex.DecodeString(r.FormValue("requestId"))
-					if err == nil {
-						r.Header.Set("X-Away-Id", hex.EncodeToString(requestId))
-					}
-
-					if ok, err := c.Verify(key, result, r); err != nil {
-						return err
-					} else if !ok {
-						utils.ClearCookie(utils.CookiePrefix+challengeName, w)
-						data.Challenges[c.Id] = challenge.VerifyResultFAIL
-						state.SolveChallenge(key, challenge.VerifyResultFAIL)
-						state.logger(r).Warn("challenge failed", "challenge", challengeName, "redirect", redirect)
-
-						// catch happy eyeballs IPv4 -> IPv6 migration, re-direct to try again
-						if resultKey, err := ChallengeKeyFromString(result); err == nil && resultKey.Get(ChallengeKeyFlagIsIPv4) > 0 && key.Get(ChallengeKeyFlagIsIPv4) == 0 {
-
-						} else {
-							_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusForbidden, fmt.Errorf("access denied: failed challenge %s", challengeName), redirect)
-							return nil
-						}
-					} else {
-						state.logger(r).Warn("challenge passed", "challenge", challengeName, "redirect", redirect)
-
-						token, err := c.IssueChallengeToken(state.privateKey, key, []byte(result), data.Expires)
-						if err != nil {
-							utils.ClearCookie(utils.CookiePrefix+challengeName, w)
-						} else {
-							utils.SetCookie(utils.CookiePrefix+challengeName, token, data.Expires, w)
-						}
-						data.Challenges[c.Id] = challenge.VerifyResultPASS
-						state.SolveChallenge(key, challenge.VerifyResultPASS)
-					}
-
-					switch httpCode {
-					case http.StatusMovedPermanently, http.StatusFound, http.StatusSeeOther, http.StatusTemporaryRedirect, http.StatusPermanentRedirect:
-						if redirect == "" {
-							_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusBadRequest, errors.New("no redirect found"), "")
-							return nil
-						}
-						http.Redirect(w, r, redirect, httpCode)
-					default:
-						w.Header().Set("Content-Type", mimeType)
-						w.WriteHeader(httpCode)
-						if content != nil {
-							_, _ = w.Write(content)
-						}
-					}
-
-					return nil
-				}()
-				if err != nil {
-					utils.ClearCookie(utils.CookiePrefix+challengeName, w)
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusInternalServerError, err, redirect)
-					return
-				}
-			})
-
-		case "wasm":
-			wasmData, err := embed.ChallengeFs.ReadFile(fmt.Sprintf("challenge/%s/runtime/%s", challengeName, p.Runtime.Asset))
-			if err != nil {
-				return nil, fmt.Errorf("c %s: could not load runtime: %w", challengeName, err)
-			}
-			err = state.Wasm.Compile(challengeName, wasmData)
-			if err != nil {
-				return nil, fmt.Errorf("c %s: compiling runtime: %w", challengeName, err)
-			}
-
-			c.ServeMakeChallenge = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				err := state.Wasm.Instantiate(challengeName, func(ctx context.Context, mod api.Module) (err error) {
-
-					data := RequestDataFromContext(r.Context())
-
-					in := _interface.MakeChallengeInput{
-						Key:        state.GetChallengeKeyForRequest(challengeName, data.Expires, r),
-						Parameters: p.Parameters,
-						Headers:    inline.MIMEHeader(r.Header),
-					}
-					in.Data, err = io.ReadAll(r.Body)
-					if err != nil {
-						return err
-					}
-
-					out, err := wasm.MakeChallengeCall(ctx, mod, in)
-					if err != nil {
-						return err
-					}
-
-					// set output headers
-					for k, v := range out.Headers {
-						w.Header()[k] = v
-					}
-					w.Header().Set("Content-Length", fmt.Sprintf("%d", len(out.Data)))
-					w.WriteHeader(out.Code)
-					_, _ = w.Write(out.Data)
-					return nil
-				})
-				if err != nil {
-					_ = state.errorPage(w, r.Header.Get("X-Away-Id"), http.StatusInternalServerError, err, "")
-					return
-				}
-			})
-
-			c.Verify = func(key []byte, result string, r *http.Request) (ok bool, err error) {
-				err = state.Wasm.Instantiate(challengeName, func(ctx context.Context, mod api.Module) (err error) {
-					in := _interface.VerifyChallengeInput{
-						Key:        key,
-						Parameters: p.Parameters,
-						Result:     []byte(result),
-					}
-
-					out, err := wasm.VerifyChallengeCall(ctx, mod, in)
-					if err != nil {
-						return err
-					}
-
-					if out == _interface.VerifyChallengeOutputError {
-						return errors.New("error checking challenge")
-					}
-					ok = out == _interface.VerifyChallengeOutputOK
-					return nil
-				})
-				if err != nil {
-					return false, err
-				}
-				return ok, nil
-			}
-		}
-
-		state.Challenges[c.Id] = c
 	}
 
-	for _, rule := range p.Rules {
+	for _, r := range p.Rules {
-		hasher := sha256.New()
-		hasher.Write([]byte(rule.Name))
-		hasher.Write([]byte{0})
-		if rule.Host != nil {
-			hasher.Write([]byte(*rule.Host))
-		}
-		hasher.Write([]byte{0})
-		hasher.Write(privateKeyFingerprint[:])
-		sum := hasher.Sum(nil)
 
-		challenges := make([]challenge.Id, 0, len(rule.Challenges))
+		rule, err := NewRuleState(state, r, conditionReplacer, nil)
-
-		for _, challengeName := range rule.Challenges {
-			c, ok := state.GetChallengeByName(challengeName)
-			if !ok {
-				return nil, fmt.Errorf("challenge %s not found", challengeName)
-			}
-			challenges = append(challenges, c.Id)
-		}
-
-		r := RuleState{
-			Name:       rule.Name,
-			Hash:       hex.EncodeToString(sum[:8]),
-			Host:       rule.Host,
-			Action:     policy.RuleAction(strings.ToUpper(rule.Action)),
-			Challenges: challenges,
-		}
-
-		if (r.Action == policy.RuleActionCHALLENGE || r.Action == policy.RuleActionCHECK) && len(r.Challenges) == 0 {
-			return nil, fmt.Errorf("no challenges found in rule %s", rule.Name)
-		}
-
-		// allow nesting
-		var conditions []string
-		for _, cond := range rule.Conditions {
-			cond = conditionReplacer.Replace(cond)
-			conditions = append(conditions, cond)
-		}
-
-		ast, err := condition.FromStrings(state.RulesEnv, condition.OperatorOr, conditions...)
 		if err != nil {
-			return nil, fmt.Errorf("rules %s: error compiling conditions: %v", rule.Name, err)
+			return nil, fmt.Errorf("rule %s: %w", r.Name, err)
 		}
-		program, err := state.RulesEnv.Program(ast)
-		if err != nil {
-			return nil, fmt.Errorf("rules %s: error compiling program: %v", rule.Name, err)
-		}
-		r.Program = program
 
-		slog.Warn("loaded rule", "rule", r.Name, "hash", r.Hash, "action", rule.Action)
+		slog.Warn("loaded rule", "rule", rule.Name, "hash", rule.Hash, "action", rule.Action, "children", len(rule.Children))
 
-		state.Rules = append(state.Rules, r)
+		state.rules = append(state.rules, rule)
 	}
 
 	state.Mux = http.NewServeMux()
@@ -794,28 +232,5 @@ func NewState(p policy.Policy, settings StateSettings) (handler http.Handler, er
 		return nil, err
 	}
 
-	if state.DecayMap != nil {
-		go func() {
-			ticker := time.NewTicker(17 * time.Minute)
-			for {
-				select {
-				case <-ticker.C:
-					state.DecayMap.Decay()
-				case <-state.close:
-					return
-				}
-			}
-		}()
-	}
-
 	return state, nil
 }
-
-func (state *State) GetChallengeByName(name string) (challenge.Challenge, bool) {
-	for _, c := range state.Challenges {
-		if c.Name == name {
-			return c, true
-		}
-	}
-	return challenge.Challenge{}, false
-}

utils/cache.go

@@ -0,0 +1,86 @@
+package utils
+
+import (
+	"errors"
+	"os"
+	"path"
+	"time"
+)
+
+type Cache interface {
+	Get(key string, maxAge time.Duration) ([]byte, error)
+
+	Set(key string, value []byte) error
+}
+
+func CachePrefix(c Cache, prefix string) Cache {
+	if c == nil {
+		return nil
+	}
+	return prefixCache{
+		c:      c,
+		prefix: prefix,
+	}
+}
+
+func CacheDirectory(directory string) (Cache, error) {
+	if stat, err := os.Stat(directory); err != nil {
+		return nil, err
+	} else if !stat.IsDir() {
+		return nil, errors.New("not a directory")
+	}
+	return dirCache(directory), nil
+}
+
+type prefixCache struct {
+	c      Cache
+	prefix string
+}
+
+func (c prefixCache) Get(key string, maxAge time.Duration) ([]byte, error) {
+	return c.c.Get(c.prefix+key, maxAge)
+}
+
+func (c prefixCache) Set(key string, value []byte) error {
+	return c.c.Set(c.prefix+key, value)
+}
+
+type dirCache string
+
+var ErrExpired = errors.New("key expired")
+
+func (d dirCache) Get(key string, maxAge time.Duration) ([]byte, error) {
+	fname := path.Join(string(d), key)
+	stat, err := os.Stat(fname)
+	if err != nil {
+		return nil, err
+	}
+	if stat.IsDir() {
+		return nil, errors.New("key is directory")
+	}
+	data, err := os.ReadFile(fname)
+	if err != nil {
+		return nil, err
+	}
+
+	if stat.ModTime().Before(time.Now().Add(-maxAge)) {
+		return data, ErrExpired
+	} else {
+		return data, nil
+	}
+}
+
+func (d dirCache) Set(key string, value []byte) error {
+	fname := path.Join(string(d), key)
+	fs, err := os.Create(fname)
+	if err != nil {
+		return err
+	}
+	defer fs.Close()
+	_, err = fs.Write(value)
+	fs.Sync()
+	fs.Close()
+
+	_ = os.Chtimes(fname, time.Time{}, time.Now())
+	return err
+}

utils/cookie.go

@@ -1,27 +1,41 @@
 package utils
 
 import (
+	"net"
 	"net/http"
 	"time"
 )
 
 var CookiePrefix = ".go-away-"
 
-func SetCookie(name, value string, expiry time.Time, w http.ResponseWriter) {
+// getValidHost Gets a valid host for an http.Cookie Domain field
+// TODO: bug: does not work with IPv6, see https://github.com/golang/go/issues/65521
+func getValidHost(host string) string {
+	ipStr, _, err := net.SplitHostPort(host)
+	if err != nil {
+		return host
+	}
+	return ipStr
+}
+
+func SetCookie(name, value string, expiry time.Time, w http.ResponseWriter, r *http.Request) {
 	http.SetCookie(w, &http.Cookie{
 		Name:     name,
 		Value:    value,
 		Expires:  expiry,
 		SameSite: http.SameSiteLaxMode,
 		Path:     "/",
+		Domain:   getValidHost(r.Host),
 	})
 }
-func ClearCookie(name string, w http.ResponseWriter) {
+
+func ClearCookie(name string, w http.ResponseWriter, r *http.Request) {
 	http.SetCookie(w, &http.Cookie{
 		Name:     name,
 		Value:    "",
 		Expires:  time.Now().Add(-1 * time.Hour),
 		MaxAge:   -1,
 		SameSite: http.SameSiteLaxMode,
+		Domain:   getValidHost(r.Host),
 	})
 }

utils/fingerprint.go

@@ -16,31 +16,27 @@ import (
 )
 
 func applyTLSFingerprinter(server *http.Server) {
+	if server.TLSConfig == nil {
+		return
+	}
 	server.TLSConfig = server.TLSConfig.Clone()
 
-	getCertificate := server.TLSConfig.GetCertificate
+	getConfigForClient := server.TLSConfig.GetConfigForClient
-	if getCertificate == nil {
-		server.TLSConfig.GetCertificate = func(clientHello *tls.ClientHelloInfo) (*tls.Certificate, error) {
-			ja3n, ja4 := buildTLSFingerprint(clientHello)
-			ptr := clientHello.Context().Value(tlsFingerprintKey{})
-			if fpPtr, ok := ptr.(*TLSFingerprint); ok && ptr != nil && fpPtr != nil {
-				fpPtr.ja3n.Store(&ja3n)
-				fpPtr.ja4.Store(&ja4)
-			}
 
+	if getConfigForClient == nil {
+		getConfigForClient = func(info *tls.ClientHelloInfo) (*tls.Config, error) {
 			return nil, nil
 		}
-	} else {
+	}
-		server.TLSConfig.GetCertificate = func(clientHello *tls.ClientHelloInfo) (*tls.Certificate, error) {
-			ja3n, ja4 := buildTLSFingerprint(clientHello)
-			ptr := clientHello.Context().Value(tlsFingerprintKey{})
-			if fpPtr, ok := ptr.(*TLSFingerprint); ok && ptr != nil && fpPtr != nil {
-				fpPtr.ja3n.Store(&ja3n)
-				fpPtr.ja4.Store(&ja4)
-			}
 
-			return getCertificate(clientHello)
+	server.TLSConfig.GetConfigForClient = func(clientHello *tls.ClientHelloInfo) (*tls.Config, error) {
+		ja3n, ja4 := buildTLSFingerprint(clientHello)
+		ptr := clientHello.Context().Value(tlsFingerprintKey{})
+		if fpPtr, ok := ptr.(*TLSFingerprint); ok && ptr != nil && fpPtr != nil {
+			fpPtr.ja3n.Store(&ja3n)
+			fpPtr.ja4.Store(&ja4)
 		}
+		return getConfigForClient(clientHello)
 	}
 	server.ConnContext = func(ctx context.Context, c net.Conn) context.Context {
 		return context.WithValue(ctx, tlsFingerprintKey{}, &TLSFingerprint{})

utils/http.go

@@ -2,7 +2,9 @@ package utils
 
 import (
 	"context"
+	"crypto/rand"
 	"crypto/tls"
+	"encoding/base64"
 	"errors"
 	"fmt"
 	"net"
@@ -13,7 +15,6 @@ import (
 )
 
 func NewServer(handler http.Handler, tlsConfig *tls.Config) *http.Server {
-
 	if tlsConfig == nil {
 		proto := new(http.Protocols)
 		proto.SetHTTP1(true)
@@ -34,6 +35,21 @@ func NewServer(handler http.Handler, tlsConfig *tls.Config) *http.Server {
 	}
 }
 
+func SelectHTTPHandler(backends map[string]http.Handler, host string) http.Handler {
+	backend, ok := backends[host]
+	if !ok {
+		// do wildcard match
+		wildcard := "*." + strings.Join(strings.Split(host, ".")[1:], ".")
+		backend, ok = backends[wildcard]
+
+		if !ok {
+			// return fallback
+			backend = backends["*"]
+		}
+	}
+	return backend
+}
+
 func EnsureNoOpenRedirect(redirect string) (string, error) {
 	uri, err := url.Parse(redirect)
 	if err != nil {
@@ -79,3 +95,46 @@ func MakeReverseProxy(target string) (*httputil.ReverseProxy, error) {
 
 	return rp, nil
 }
+
+func GetRequestScheme(r *http.Request) string {
+	if proto := r.Header.Get("X-Forwarded-Proto"); proto == "http" || proto == "https" {
+		return proto
+	}
+
+	if r.TLS != nil {
+		return "https"
+	}
+
+	return "http"
+}
+
+func GetRequestAddress(r *http.Request, clientHeader string) net.IP {
+	var ipStr string
+	if clientHeader != "" {
+		ipStr = r.Header.Get(clientHeader)
+	}
+	if ipStr != "" {
+		// handle X-Forwarded-For
+		ipStr = strings.Split(ipStr, ",")[0]
+	}
+
+	// fallback
+	if ipStr == "" {
+		ipStr, _, _ = net.SplitHostPort(r.RemoteAddr)
+	}
+	ipStr = strings.Trim(ipStr, "[]")
+	return net.ParseIP(ipStr)
+}
+
+func CacheBust() string {
+	return cacheBust
+}
+
+var cacheBust string
+
+func init() {
+
+	buf := make([]byte, 16)
+	_, _ = rand.Read(buf)
+	cacheBust = base64.RawURLEncoding.EncodeToString(buf)
+}

utils/radb.go

@@ -0,0 +1,167 @@
+package utils
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"net"
+	"regexp"
+	"strings"
+	"time"
+)
+
+type RADb struct {
+	target string
+	dialer net.Dialer
+}
+
+const RADBServer = "whois.radb.net:43"
+
+func NewRADb() (*RADb, error) {
+
+	host, port, err := net.SplitHostPort(RADBServer)
+	if err != nil {
+		return nil, err
+	}
+
+	return &RADb{
+		target: fmt.Sprintf("%s:%s", host, port),
+		dialer: net.Dialer{
+			Timeout: 5 * time.Second,
+		},
+	}, nil
+}
+
+var whoisRouteRegex = regexp.MustCompile("(?P<prefix>(([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)|([0-9a-f:]+::))/[0-9]+)")
+
+func (db *RADb) query(fn func(n int, record []byte) error, queries ...string) error {
+
+	conn, err := db.dialer.Dial("tcp", db.target)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	if len(queries) > 1 {
+		// enable persistent conn
+		_ = conn.SetDeadline(time.Now().Add(time.Second * 5))
+		_, err = conn.Write([]byte("!!\n"))
+		if err != nil {
+			return err
+		}
+	}
+
+	scanner := bufio.NewScanner(conn)
+	scanner.Split(bufio.ScanLines)
+
+	for _, q := range queries {
+
+		_ = conn.SetDeadline(time.Now().Add(time.Second * 5))
+		_, err = conn.Write([]byte(strings.TrimSpace(q) + "\n"))
+		if err != nil {
+			return err
+		}
+
+		n := 0
+
+		for scanner.Scan() {
+			buf := bytes.Trim(scanner.Bytes(), "\r\n")
+			if bytes.HasPrefix(buf, []byte("%")) || bytes.Equal(buf, []byte("C")) {
+				// end of record
+				break
+			}
+			err = fn(n, buf)
+			if err != nil {
+				return err
+			}
+			n++
+		}
+	}
+
+	if len(queries) > 1 {
+		// exit
+		_ = conn.SetDeadline(time.Now().Add(time.Second * 5))
+		_, err = conn.Write([]byte("q\n"))
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func init() {
+	db, _ := NewRADb()
+	db.FetchIPInfo(net.ParseIP("162.158.62.1"))
+}
+
+func (db *RADb) FetchIPInfo(ip net.IP) (result []string, err error) {
+	var ipNet net.IPNet
+	if ip4 := ip.To4(); ip4 != nil {
+		ipNet = net.IPNet{
+			IP: ip4,
+			// single ip
+			Mask: net.CIDRMask(len(ip4)*8, len(ip4)*8),
+		}
+	} else {
+		ipNet = net.IPNet{
+			IP: ip,
+			// single ip
+			Mask: net.CIDRMask(len(ip)*8, len(ip)*8),
+		}
+	}
+
+	err = db.query(func(n int, record []byte) error {
+		result = append(result, string(record))
+		return nil
+	}, fmt.Sprintf("!r%s,l", ipNet.String()))
+
+	if err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (db *RADb) FetchASNets(asn int) (result []net.IPNet, err error) {
+
+	ix := whoisRouteRegex.SubexpIndex("prefix")
+	if ix == -1 {
+		panic("invalid regex prefix")
+	}
+
+	var data []byte
+
+	err = db.query(func(n int, record []byte) error {
+		if n == 0 {
+			// do not append ASN number reply
+			return nil
+		}
+		// pad data
+		if n == 1 {
+			data = append(data, ' ')
+		}
+		data = append(data, record...)
+		return nil
+	},
+		// See https://www.radb.net/query/help
+		// fetch IPv4 routes
+		fmt.Sprintf("!gas%d", asn),
+		// fetch IPv6 routes
+		fmt.Sprintf("!6as%d", asn),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	matches := whoisRouteRegex.FindAllSubmatch(data, -1)
+	for _, match := range matches {
+		_, ipNet, err := net.ParseCIDR(string(match[ix]))
+		if err != nil {
+			return nil, fmt.Errorf("invalid CIDR %s: %w", string(match[ix]), err)
+		}
+		result = append(result, *ipNet)
+	}
+
+	return result, nil
+}