xbps/lib/repo.c
2013-09-17 16:24:19 +02:00

378 lines
9.2 KiB
C

/*-
* Copyright (c) 2012-2013 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include "xbps_api_impl.h"
/**
* @file lib/repo.c
* @brief Repository functions
* @defgroup repo Repository functions
*/
char *
xbps_repo_path(struct xbps_handle *xhp, const char *url)
{
assert(xhp);
assert(url);
return xbps_xasprintf("%s/%s-repodata",
url, xhp->target_arch ? xhp->target_arch : xhp->native_arch);
}
struct xbps_repo *
xbps_repo_open(struct xbps_handle *xhp, const char *url)
{
struct xbps_repo *repo;
struct stat st;
const char *arch;
char *repofile;
assert(xhp);
assert(url);
if (xhp->target_arch)
arch = xhp->target_arch;
else
arch = xhp->native_arch;
if (xbps_repository_is_remote(url)) {
/* remote repository */
char *rpath;
if ((rpath = xbps_get_remote_repo_string(url)) == NULL)
return NULL;
repofile = xbps_xasprintf("%s/%s/%s-repodata", xhp->metadir, rpath, arch);
free(rpath);
} else {
/* local repository */
repofile = xbps_repo_path(xhp, url);
}
repo = calloc(1, sizeof(struct xbps_repo));
assert(repo);
repo->xhp = xhp;
repo->uri = url;
repo->ar = archive_read_new();
archive_read_support_compression_gzip(repo->ar);
archive_read_support_compression_bzip2(repo->ar);
archive_read_support_compression_xz(repo->ar);
archive_read_support_format_tar(repo->ar);
if (stat(repofile, &st) == -1) {
xbps_dbg_printf(xhp, "[repo] cannot stat repository file %s: %s\n",
repofile, strerror(errno));
archive_read_finish(repo->ar);
free(repo);
repo = NULL;
goto out;
}
if (archive_read_open_filename(repo->ar, repofile, st.st_blksize) == ARCHIVE_FATAL) {
xbps_dbg_printf(xhp, "[repo] cannot open repository file %s: %s\n",
repofile, strerror(archive_errno(repo->ar)));
archive_read_finish(repo->ar);
free(repo);
repo = NULL;
}
out:
free(repofile);
return repo;
}
xbps_dictionary_t
xbps_repo_get_plist(struct xbps_repo *repo, const char *file)
{
xbps_dictionary_t d;
struct archive_entry *entry;
void *buf;
size_t buflen;
ssize_t nbytes = -1;
int rv;
assert(repo);
assert(file);
if (repo->ar == NULL)
return NULL;
for (;;) {
rv = archive_read_next_header(repo->ar, &entry);
if (rv == ARCHIVE_EOF || rv == ARCHIVE_FATAL)
break;
else if (rv == ARCHIVE_RETRY)
continue;
if (strcmp(archive_entry_pathname(entry), file) == 0) {
buflen = (size_t)archive_entry_size(entry);
buf = malloc(buflen);
assert(buf);
nbytes = archive_read_data(repo->ar, buf, buflen);
if ((size_t)nbytes != buflen) {
free(buf);
return NULL;
}
d = xbps_dictionary_internalize(buf);
free(buf);
return d;
}
archive_read_data_skip(repo->ar);
}
return NULL;
}
void
xbps_repo_close(struct xbps_repo *repo)
{
assert(repo);
if (repo->ar == NULL)
return;
archive_read_finish(repo->ar);
if (xbps_object_type(repo->idx) == XBPS_TYPE_DICTIONARY)
xbps_object_release(repo->idx);
if (xbps_object_type(repo->idxfiles) == XBPS_TYPE_DICTIONARY)
xbps_object_release(repo->idxfiles);
free(repo);
}
xbps_dictionary_t
xbps_repo_get_virtualpkg(struct xbps_repo *repo, const char *pkg)
{
xbps_dictionary_t pkgd;
assert(repo);
assert(pkg);
if (repo->ar == NULL)
return NULL;
if (xbps_object_type(repo->idx) != XBPS_TYPE_DICTIONARY) {
repo->idx = xbps_repo_get_plist(repo, XBPS_PKGINDEX);
if (repo->idx == NULL)
return NULL;
}
pkgd = xbps_find_virtualpkg_in_dict(repo->xhp, repo->idx, pkg);
if (pkgd) {
xbps_dictionary_set_cstring_nocopy(pkgd,
"repository", repo->uri);
return pkgd;
}
return NULL;
}
xbps_dictionary_t
xbps_repo_get_pkg(struct xbps_repo *repo, const char *pkg)
{
xbps_dictionary_t pkgd;
assert(repo);
assert(pkg);
if (repo->ar == NULL)
return NULL;
if (xbps_object_type(repo->idx) != XBPS_TYPE_DICTIONARY) {
repo->idx = xbps_repo_get_plist(repo, XBPS_PKGINDEX);
if (repo->idx == NULL)
return NULL;
}
pkgd = xbps_find_pkg_in_dict(repo->idx, pkg);
if (pkgd) {
xbps_dictionary_set_cstring_nocopy(pkgd,
"repository", repo->uri);
return pkgd;
}
return NULL;
}
xbps_dictionary_t
xbps_repo_get_pkg_plist(struct xbps_handle *xhp, xbps_dictionary_t pkgd,
const char *plist)
{
xbps_dictionary_t bpkgd;
char *url;
url = xbps_repository_pkg_path(xhp, pkgd);
if (url == NULL)
return NULL;
bpkgd = xbps_get_pkg_plist_from_binpkg(url, plist);
free(url);
return bpkgd;
}
static xbps_array_t
revdeps_match(struct xbps_repo *repo, xbps_dictionary_t tpkgd, const char *str)
{
xbps_dictionary_t pkgd;
xbps_array_t revdeps = NULL, pkgdeps, provides;
xbps_object_iterator_t iter;
xbps_object_t obj;
const char *pkgver, *tpkgver, *arch, *vpkg;
char *buf;
iter = xbps_dictionary_iterator(repo->idx);
assert(iter);
while ((obj = xbps_object_iterator_next(iter))) {
pkgd = xbps_dictionary_get_keysym(repo->idx, obj);
if (xbps_dictionary_equals(pkgd, tpkgd))
continue;
pkgdeps = xbps_dictionary_get(pkgd, "run_depends");
if (!xbps_array_count(pkgdeps))
continue;
/*
* Try to match passed in string.
*/
if (str) {
if (!xbps_match_pkgdep_in_array(pkgdeps, str))
continue;
xbps_dictionary_get_cstring_nocopy(pkgd,
"architecture", &arch);
if (!xbps_pkg_arch_match(repo->xhp, arch, NULL))
continue;
xbps_dictionary_get_cstring_nocopy(pkgd,
"pkgver", &tpkgver);
/* match */
if (revdeps == NULL)
revdeps = xbps_array_create();
if (!xbps_match_string_in_array(revdeps, tpkgver))
xbps_array_add_cstring_nocopy(revdeps, tpkgver);
continue;
}
/*
* Try to match any virtual package.
*/
provides = xbps_dictionary_get(tpkgd, "provides");
for (unsigned int i = 0; i < xbps_array_count(provides); i++) {
xbps_array_get_cstring_nocopy(provides, i, &vpkg);
if (strchr(vpkg, '_') == NULL)
buf = xbps_xasprintf("%s_1", vpkg);
else
buf = strdup(vpkg);
if (!xbps_match_pkgdep_in_array(pkgdeps, buf)) {
free(buf);
continue;
}
free(buf);
xbps_dictionary_get_cstring_nocopy(pkgd,
"architecture", &arch);
if (!xbps_pkg_arch_match(repo->xhp, arch, NULL))
continue;
xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver",
&tpkgver);
/* match */
if (revdeps == NULL)
revdeps = xbps_array_create();
if (!xbps_match_string_in_array(revdeps, tpkgver))
xbps_array_add_cstring_nocopy(revdeps, tpkgver);
}
/*
* Try to match by pkgver.
*/
xbps_dictionary_get_cstring_nocopy(tpkgd, "pkgver", &pkgver);
if (!xbps_match_pkgdep_in_array(pkgdeps, pkgver))
continue;
xbps_dictionary_get_cstring_nocopy(pkgd,
"architecture", &arch);
if (!xbps_pkg_arch_match(repo->xhp, arch, NULL))
continue;
xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &tpkgver);
/* match */
if (revdeps == NULL)
revdeps = xbps_array_create();
if (!xbps_match_string_in_array(revdeps, tpkgver))
xbps_array_add_cstring_nocopy(revdeps, tpkgver);
}
xbps_object_iterator_release(iter);
return revdeps;
}
xbps_array_t
xbps_repo_get_pkg_revdeps(struct xbps_repo *repo, const char *pkg)
{
xbps_array_t revdeps = NULL, vdeps = NULL;
xbps_dictionary_t pkgd;
const char *vpkg;
char *buf = NULL;
bool match = false;
if (((pkgd = xbps_rpool_get_pkg(repo->xhp, pkg)) == NULL) &&
((pkgd = xbps_rpool_get_virtualpkg(repo->xhp, pkg)) == NULL)) {
errno = ENOENT;
return NULL;
}
/*
* If pkg is a virtual pkg let's match it instead of the real pkgver.
*/
if ((vdeps = xbps_dictionary_get(pkgd, "provides"))) {
for (unsigned int i = 0; i < xbps_array_count(vdeps); i++) {
char *vpkgn;
xbps_array_get_cstring_nocopy(vdeps, i, &vpkg);
if (strchr(vpkg, '_') == NULL)
buf = xbps_xasprintf("%s_1", vpkg);
else
buf = strdup(vpkg);
vpkgn = xbps_pkg_name(buf);
assert(vpkgn);
if (strcmp(vpkgn, pkg) == 0) {
free(vpkgn);
break;
}
free(vpkgn);
free(buf);
buf = NULL;
}
if (buf) {
match = true;
revdeps = revdeps_match(repo, pkgd, buf);
free(buf);
}
}
if (!match)
revdeps = revdeps_match(repo, pkgd, NULL);
return revdeps;
}