5642ffa86e
- Configuration file 'xbps-conf.plist' has been splitted off into
two files: conf.plist and repositories.plist. By default they
are stored in etc/xbps.
- Changed some members in xbps_handle struct, mostly to make it easy
to change its value in {cache,root}dir and conffile.
- Made xbps_init() release proplib objects as soon as we don't need
them, that way it uses 35% less of memory or in some cases even more.
There will be another commit that will implement to read new virtualpkg
settings by the user, as specified in:
http://code.google.com/p/xbps/issues/detail?id=12
540 lines
14 KiB
C
540 lines
14 KiB
C
/*-
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* Copyright (c) 2008-2011 Juan Romero Pardines.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "xbps_api_impl.h"
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/**
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* @file lib/package_unpack.c
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* @brief Binary package file unpacking routines
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* @defgroup unpack Binary package file unpacking functions
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*
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* Unpacking a binary package involves the following steps:
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* - Its <b>pre-install</b> target in the INSTALL script is executed
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* (if available).
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* - Metadata files are extracted.
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* - All other kind of files on archive are extracted.
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* - Handles configuration files by taking care of updating them with
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* new versions if necessary and to not overwrite modified ones.
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* - Files from installed package are compared with new package and
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* obsolete files are removed.
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* - Finally its state is set to XBPS_PKG_STATE_UNPACKED.
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*
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* The following image shown below represents a transaction dictionary
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* returned by xbps_transaction_prepare():
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*
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* @image html images/xbps_transaction_dictionary.png
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*
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* Legend:
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* - <b>Salmon filled box</b>: The transaction dictionary.
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* - <b>White filled box</b>: mandatory objects.
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* - <b>Grey filled box</b>: optional objects.
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* - <b>Green filled box</b>: possible value set in the object, only one of
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* them is set.
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*
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* Text inside of white boxes are the key associated with the object, its
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* data type is specified on its edge, i.e string, array, integer, dictionary.
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*/
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static int
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set_extract_flags(void)
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{
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int flags;
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if (geteuid() == 0)
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flags = FEXTRACT_FLAGS;
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else
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flags = EXTRACT_FLAGS;
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return flags;
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}
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static int
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extract_metafile(struct archive *ar,
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struct archive_entry *entry,
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const char *file,
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const char *pkgname,
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const char *version,
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bool exec,
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int flags)
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{
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char *buf;
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int rv;
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buf = xbps_xasprintf(".%s/metadata/%s/%s",
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XBPS_META_PATH, pkgname, file);
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if (buf == NULL)
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return ENOMEM;
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archive_entry_set_pathname(entry, buf);
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free(buf);
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if (exec)
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archive_entry_set_perm(entry, 0750);
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if (archive_read_extract(ar, entry, flags) != 0) {
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if ((rv = archive_errno(ar)) != EEXIST) {
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xbps_error_printf("failed to extract metadata file `%s'"
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"for `%s-%s': %s\n", file, pkgname, version,
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strerror(rv));
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}
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}
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return 0;
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}
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static int
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remove_metafile(const char *file, const char *pkgname, const char *version)
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{
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char *buf;
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buf = xbps_xasprintf(".%s/metadata/%s/%s",
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XBPS_META_PATH, pkgname, file);
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if (buf == NULL)
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return ENOMEM;
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if (unlink(buf) == -1) {
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if (errno && errno != ENOENT) {
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xbps_error_printf("failed to remove metadata file "
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"`%s' while unpacking `%s-%s': %s\n", file,
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pkgname, version, strerror(errno));
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free(buf);
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return errno;
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}
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}
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free(buf);
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return 0;
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}
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/*
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* Execute the unpack progress function callback if set and its
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* private data is also set. It's so sad that
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* archive_read_set_progress_callback() from libarchive(3) cannot be used
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* here because sometimes it misses some entries by unknown reasons.
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*/
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#define RUN_PROGRESS_CB() \
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do { \
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if (xhp->xbps_unpack_cb != NULL) \
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(*xhp->xbps_unpack_cb)(xhp->xucd); \
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} while (0)
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static int
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unpack_archive(prop_dictionary_t pkg_repod,
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struct archive *ar,
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const char *pkgname,
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const char *version,
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struct xbps_handle *xhp)
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{
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prop_dictionary_t propsd = NULL, filesd = NULL, old_filesd = NULL;
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prop_array_t array;
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const struct stat *entry_statp;
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struct archive_entry *entry;
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size_t nmetadata = 0, entry_idx = 0;
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const char *entry_pname, *transact;
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char *buf;
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int rv, flags;
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bool preserve, update;
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assert(ar != NULL);
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assert(pkg_repod != NULL);
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assert(pkgname != NULL);
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assert(version != NULL);
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preserve = update = false;
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if (chdir(prop_string_cstring_nocopy(xhp->rootdir)) == -1) {
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xbps_error_printf("cannot chdir to rootdir for "
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"`%s-%s': %s\n", pkgname, version, strerror(errno));
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return errno;
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}
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prop_dictionary_get_bool(pkg_repod, "preserve", &preserve);
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prop_dictionary_get_cstring_nocopy(pkg_repod,
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"transaction", &transact);
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assert(transact != NULL);
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if (strcmp(transact, "update") == 0)
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update = true;
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/*
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* While updating, always remove current INSTALL/REMOVE
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* scripts, because a package upgrade might not have those
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* anymore.
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*/
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if (update) {
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if ((rv = remove_metafile("INSTALL", pkgname, version)) != 0)
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return rv;
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if ((rv = remove_metafile("REMOVE", pkgname, version)) != 0)
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return rv;
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}
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/*
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* Process the archive files.
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*/
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while (archive_read_next_header(ar, &entry) == ARCHIVE_OK) {
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entry_statp = archive_entry_stat(entry);
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entry_pname = archive_entry_pathname(entry);
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flags = set_extract_flags();
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if (xhp->xbps_unpack_cb != NULL) {
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xhp->xucd->entry = entry_pname;
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xhp->xucd->entry_size = archive_entry_size(entry);
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xhp->xucd->entry_is_metadata = false;
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xhp->xucd->entry_is_conf = false;
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}
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if (strcmp("./INSTALL", entry_pname) == 0) {
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/*
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* Extract the INSTALL script first to execute
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* the pre install target.
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*/
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buf = xbps_xasprintf(".%s/metadata/%s/INSTALL",
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XBPS_META_PATH, pkgname);
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if (buf == NULL) {
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rv = ENOMEM;
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goto out;
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}
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rv = extract_metafile(ar, entry, "INSTALL",
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pkgname, version, true, flags);
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if (rv != 0) {
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free(buf);
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goto out;
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}
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rv = xbps_file_exec(buf, "pre",
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pkgname, version, update ? "yes" : "no", NULL);
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free(buf);
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if (rv != 0) {
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xbps_error_printf("%s-%s: pre-install script "
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"error: %s\n", pkgname, version,
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strerror(rv));
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goto out;
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}
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nmetadata++;
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xhp->xucd->entry_is_metadata = true;
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xhp->xucd->entry_extract_count++;
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RUN_PROGRESS_CB();
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continue;
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} else if (strcmp("./REMOVE", entry_pname) == 0) {
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rv = extract_metafile(ar, entry, "REMOVE",
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pkgname, version, true, flags);
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if (rv != 0)
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goto out;
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nmetadata++;
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xhp->xucd->entry_is_metadata = true;
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xhp->xucd->entry_extract_count++;
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RUN_PROGRESS_CB();
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continue;
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} else if (strcmp("./files.plist", entry_pname) == 0) {
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/*
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* Internalize this entry into a prop_dictionary
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* to check for obsolete files if updating a package.
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* It will be extracted to disk at the end.
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*/
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filesd = xbps_dictionary_from_archive_entry(ar, entry);
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if (filesd == NULL) {
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rv = errno;
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goto out;
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}
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nmetadata++;
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xhp->xucd->entry_is_metadata = true;
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xhp->xucd->entry_extract_count++;
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RUN_PROGRESS_CB();
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continue;
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} else if (strcmp("./props.plist", entry_pname) == 0) {
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rv = extract_metafile(ar, entry, XBPS_PKGPROPS,
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pkgname, version, false, flags);
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if (rv != 0)
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goto out;
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propsd = xbps_dictionary_from_metadata_plist(
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pkgname, XBPS_PKGPROPS);
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if (propsd == NULL) {
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rv = errno;
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goto out;
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}
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nmetadata++;
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xhp->xucd->entry_is_metadata = true;
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xhp->xucd->entry_extract_count++;
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RUN_PROGRESS_CB();
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continue;
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}
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/*
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* If XBPS_PKGFILES or XBPS_PKGPROPS weren't found
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* in the archive at this phase, skip all data.
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*/
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if (propsd == NULL || filesd == NULL) {
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archive_read_data_skip(ar);
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/*
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* If we have processed 4 entries and the two
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* required metadata files weren't found, bail out.
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* This is not an XBPS binary package.
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*/
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if (entry_idx >= 3) {
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xbps_error_printf("invalid binary pkg archive"
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"for `%s-%s'\n", pkgname, version);
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return ENODEV;
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}
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entry_idx++;
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continue;
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}
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/*
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* Compute total entries in progress data, if set.
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* total_entries = metadata + files + conf_files + links.
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*/
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xhp->xucd->entry_total_count = nmetadata;
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array = prop_dictionary_get(filesd, "files");
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xhp->xucd->entry_total_count +=
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(ssize_t)prop_array_count(array);
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array = prop_dictionary_get(filesd, "conf_files");
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xhp->xucd->entry_total_count +=
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(ssize_t)prop_array_count(array);
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array = prop_dictionary_get(filesd, "links");
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xhp->xucd->entry_total_count +=
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(ssize_t)prop_array_count(array);
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if (update && S_ISREG(entry_statp->st_mode)) {
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/*
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* Handle configuration files. Check if current entry is
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* a configuration file and take action if required. Skip
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* packages that don't have the "conf_files" array in
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* the XBPS_PKGPROPS dictionary.
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*/
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rv = xbps_entry_is_a_conf_file(propsd, entry_pname);
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if (rv == -1) {
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/* error */
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goto out;
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} else if (rv == 1) {
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if (xhp->xucd != NULL)
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xhp->xucd->entry_is_conf = true;
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rv = xbps_entry_install_conf_file(filesd,
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entry, entry_pname, pkgname, version);
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if (rv == -1) {
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/* error */
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goto out;
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} else if (rv == 0) {
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/*
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* Keep current configuration file
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* as is now and pass to next entry.
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*/
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archive_read_data_skip(ar);
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RUN_PROGRESS_CB();
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continue;
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}
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} else {
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/*
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* Current entry is not a configuration file,
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* check if installed file matches sha256 hash.
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* If true, there is no need to extract it.
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*/
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rv = xbps_file_hash_check_dictionary(filesd,
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"files", entry_pname);
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if (rv == -1) {
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xbps_dbg_printf("%s-%s: failed to check"
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" hash for `%s': %s\n", pkgname,
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version, entry_pname,
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strerror(errno));
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/* error */
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goto out;
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} else if (rv == 0) {
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/* hash match, skip */
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archive_read_data_skip(ar);
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RUN_PROGRESS_CB();
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continue;
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}
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}
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}
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/*
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* Extract entry from archive.
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*/
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if (archive_read_extract(ar, entry, flags) != 0) {
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rv = archive_errno(ar);
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if (rv != EEXIST) {
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xbps_error_printf("failed to extract `%s' "
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"from `%s-%s': %s\n", entry_pname,
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pkgname, version, strerror(rv));
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goto out;
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} else {
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if (xhp->flags & XBPS_FLAG_VERBOSE)
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xbps_warn_printf("ignoring existing "
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"entry: %s\n", entry_pname);
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RUN_PROGRESS_CB();
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continue;
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}
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}
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xhp->xucd->entry_extract_count++;
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RUN_PROGRESS_CB();
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}
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if ((rv = archive_errno(ar)) == 0) {
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buf = xbps_xasprintf(".%s/metadata/%s/%s",
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XBPS_META_PATH, pkgname, XBPS_PKGFILES);
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if (buf == NULL) {
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rv = ENOMEM;
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goto out;
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}
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/*
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* Check if files.plist exists and pkg is NOT marked as
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* preserve, in that case we need to check for obsolete files
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* and remove them if necessary.
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*/
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if (!preserve) {
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old_filesd =
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prop_dictionary_internalize_from_zfile(buf);
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if (old_filesd) {
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rv = xbps_remove_obsoletes(old_filesd, filesd);
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if (rv != 0) {
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prop_object_release(old_filesd);
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free(buf);
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rv = errno;
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goto out;
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}
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prop_object_release(old_filesd);
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} else if (errno && errno != ENOENT) {
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free(buf);
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rv = errno;
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goto out;
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}
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}
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/*
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* Now that all files were successfully unpacked, we
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* can safely externalize files.plist because the path
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* is reachable.
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*/
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if (!prop_dictionary_externalize_to_zfile(filesd, buf)) {
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rv = errno;
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xbps_error_printf("failed to extract metadata %s file"
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"for `%s-%s': %s\n", XBPS_PKGFILES, pkgname,
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version, strerror(rv));
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free(buf);
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goto out;
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}
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free(buf);
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}
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out:
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if (filesd)
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prop_object_release(filesd);
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if (propsd)
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prop_object_release(propsd);
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return rv;
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}
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#undef RUN_PROGRESS_CB
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int
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xbps_unpack_binary_pkg(prop_dictionary_t pkg_repod)
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{
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struct xbps_handle *xhp;
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struct archive *ar;
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const char *pkgname, *version, *repoloc, *pkgver, *fname;
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char *bpkg;
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int rv = 0;
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assert(pkg_repod != NULL);
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prop_dictionary_get_cstring_nocopy(pkg_repod, "pkgname", &pkgname);
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prop_dictionary_get_cstring_nocopy(pkg_repod, "version", &version);
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prop_dictionary_get_cstring_nocopy(pkg_repod, "pkgver", &pkgver);
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prop_dictionary_get_cstring_nocopy(pkg_repod, "repository", &repoloc);
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prop_dictionary_get_cstring_nocopy(pkg_repod, "filename", &fname);
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bpkg = xbps_path_from_repository_uri(pkg_repod, repoloc);
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if (bpkg == NULL) {
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xbps_error_printf("cannot determine binary pkg file "
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"for `%s-%s': %s\n", pkgname, version, strerror(errno));
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return errno;
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}
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if ((ar = archive_read_new()) == NULL) {
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rv = ENOMEM;
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goto out;
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}
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/*
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* Enable support for tar format and all compression methods.
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*/
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archive_read_support_compression_all(ar);
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archive_read_support_format_tar(ar);
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if (archive_read_open_filename(ar, bpkg, ARCHIVE_READ_BLOCKSIZE) != 0) {
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rv = archive_errno(ar);
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xbps_error_printf("failed to open `%s' binpkg: %s\n",
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fname, strerror(rv));
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goto out;
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}
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/*
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* Set extract progress callback if specified.
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*/
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xhp = xbps_handle_get();
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if (xhp->xbps_unpack_cb != NULL) {
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xhp->xucd->entry_extract_count = 0;
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xhp->xucd->entry_total_count = 0;
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}
|
|
/*
|
|
* Set package state to half-unpacked.
|
|
*/
|
|
if ((rv = xbps_set_pkg_state_installed(pkgname, version, pkgver,
|
|
XBPS_PKG_STATE_HALF_UNPACKED)) != 0) {
|
|
xbps_error_printf("failed to set `%s' to half-unpacked "
|
|
"state: %s\n", pkgver, strerror(rv));
|
|
goto out;
|
|
}
|
|
/*
|
|
* Extract archive files.
|
|
*/
|
|
if ((rv = unpack_archive(pkg_repod, ar, pkgname, version, xhp)) != 0)
|
|
goto out;
|
|
|
|
/*
|
|
* Set package state to unpacked.
|
|
*/
|
|
if ((rv = xbps_set_pkg_state_installed(pkgname, version, pkgver,
|
|
XBPS_PKG_STATE_UNPACKED)) != 0) {
|
|
xbps_error_printf("failed to set `%s' to unpacked "
|
|
"state: %s\n", pkgver, strerror(rv));
|
|
}
|
|
out:
|
|
if (bpkg)
|
|
free(bpkg);
|
|
if (ar)
|
|
archive_read_finish(ar);
|
|
|
|
return rv;
|
|
}
|