252 lines
6.8 KiB
C
252 lines
6.8 KiB
C
/*-
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* Copyright (c) 2008-2009 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 <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 <limits.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <xbps_api.h>
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static int unpack_archive_fini(struct archive *, prop_dictionary_t, bool);
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int
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xbps_unpack_binary_pkg(prop_dictionary_t pkg, bool essential)
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{
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prop_string_t filename, repoloc, arch;
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struct archive *ar;
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const char *pkgname;
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char *binfile;
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int pkg_fd, rv = 0;
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assert(pkg != NULL);
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/*
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* Append filename to the full path for binary pkg.
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*/
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prop_dictionary_get_cstring_nocopy(pkg, "pkgname", &pkgname);
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filename = prop_dictionary_get(pkg, "filename");
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arch = prop_dictionary_get(pkg, "architecture");
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repoloc = prop_dictionary_get(pkg, "repository");
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if (filename == NULL || arch == NULL || repoloc == NULL)
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return ENOTSUP;
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binfile = xbps_xasprintf("%s/%s/%s",
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prop_string_cstring_nocopy(repoloc),
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prop_string_cstring_nocopy(arch),
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prop_string_cstring_nocopy(filename));
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if (binfile == NULL)
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return EINVAL;
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if ((pkg_fd = open(binfile, O_RDONLY)) == -1) {
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rv = errno;
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goto out;
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}
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ar = archive_read_new();
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if (ar == NULL) {
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rv = ENOMEM;
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goto out2;
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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 ((rv = archive_read_open_fd(ar, pkg_fd,
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ARCHIVE_READ_BLOCKSIZE)) != 0)
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goto out3;
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rv = unpack_archive_fini(ar, pkg, essential);
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/*
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* If installation of package was successful, make sure the package
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* is really on storage (if possible).
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*/
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if (rv == 0)
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if (fdatasync(pkg_fd) == -1)
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rv = errno;
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out3:
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archive_read_finish(ar);
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out2:
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(void)close(pkg_fd);
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out:
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free(binfile);
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if (rv == 0) {
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/*
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* Set package state to unpacked.
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*/
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rv = xbps_set_pkg_state_installed(pkgname,
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XBPS_PKG_STATE_UNPACKED);
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}
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return rv;
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}
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/*
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* Flags for extracting files in binary packages. If a package
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* is marked as "essential", its files will be overwritten and then
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* the old and new dictionaries are compared to find out if there
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* are some files that were in the old package that should be removed.
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*/
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#define EXTRACT_FLAGS ARCHIVE_EXTRACT_SECURE_NODOTDOT | \
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ARCHIVE_EXTRACT_SECURE_SYMLINKS
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#define FEXTRACT_FLAGS ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM | \
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ARCHIVE_EXTRACT_TIME | EXTRACT_FLAGS
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/*
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* TODO: remove printfs and return appropiate errors to be interpreted by
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* the consumer.
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*/
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static int
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unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg,
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bool essential)
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{
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struct archive_entry *entry;
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const char *pkgname, *version, *rootdir;
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char *buf, *buf2;
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int rv = 0, flags, lflags;
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bool actgt = false;
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assert(ar != NULL);
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assert(pkg != NULL);
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rootdir = xbps_get_rootdir();
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flags = xbps_get_flags();
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if (strcmp(rootdir, "") == 0)
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rootdir = "/";
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if (chdir(rootdir) == -1)
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return errno;
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prop_dictionary_get_cstring_nocopy(pkg, "pkgname", &pkgname);
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prop_dictionary_get_cstring_nocopy(pkg, "version", &version);
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if (getuid() == 0)
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lflags = FEXTRACT_FLAGS;
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else
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lflags = EXTRACT_FLAGS;
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if (essential == false) {
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lflags |= ARCHIVE_EXTRACT_NO_OVERWRITE;
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lflags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
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}
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while (archive_read_next_header(ar, &entry) == ARCHIVE_OK) {
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/*
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* Run the pre INSTALL action if the file is there.
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*/
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if (strcmp("./INSTALL", archive_entry_pathname(entry)) == 0) {
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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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return errno;
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actgt = true;
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archive_entry_set_pathname(entry, buf);
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if (archive_read_extract(ar, entry, lflags) != 0) {
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if ((rv = archive_errno(ar)) != EEXIST) {
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free(buf);
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return rv;
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}
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}
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if ((rv = xbps_file_chdir_exec(rootdir, buf, "pre",
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pkgname, version, NULL)) != 0) {
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free(buf);
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printf("%s: preinst action target error %s\n",
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pkgname, strerror(errno));
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return rv;
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}
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/* pass to the next entry if successful */
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free(buf);
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continue;
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/*
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* Unpack metadata files (REMOVE, files.plist and props.plist)
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* into the proper path.
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*/
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} else if (strcmp("./REMOVE",
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archive_entry_pathname(entry)) == 0) {
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buf2 = xbps_xasprintf(".%s/metadata/%s/REMOVE",
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XBPS_META_PATH, pkgname);
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if (buf2 == NULL)
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return errno;
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archive_entry_set_pathname(entry, buf2);
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free(buf2);
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buf2 = NULL;
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} else if (strcmp("./files.plist",
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archive_entry_pathname(entry)) == 0) {
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buf2 = xbps_xasprintf(".%s/metadata/%s/files.plist",
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XBPS_META_PATH, pkgname);
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if (buf2 == NULL)
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return errno;
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archive_entry_set_pathname(entry, buf2);
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free(buf2);
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buf2 = NULL;
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} else if (strcmp("./props.plist",
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archive_entry_pathname(entry)) == 0) {
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buf2 = xbps_xasprintf(".%s/metadata/%s/props.plist",
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XBPS_META_PATH, pkgname);
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if (buf2 == NULL)
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return errno;
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archive_entry_set_pathname(entry, buf2);
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free(buf2);
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}
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/*
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* Extract all data from the archive now.
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*/
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if (archive_read_extract(ar, entry, lflags) != 0) {
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rv = archive_errno(ar);
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if (rv != EEXIST) {
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printf("ERROR: %s...exiting!\n",
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archive_error_string(ar));
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return rv;;
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} else if (rv == EEXIST) {
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if (flags & XBPS_VERBOSE) {
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printf("WARNING: ignoring existent "
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"path: %s\n",
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archive_entry_pathname(entry));
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}
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rv = 0;
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continue;
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}
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}
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if (flags & XBPS_VERBOSE) {
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printf(" %s\n", archive_entry_pathname(entry));
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(void)fflush(stdout);
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}
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}
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return rv;
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}
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