xbps/lib/plist_find.c

350 lines
8.3 KiB
C

/*-
* Copyright (c) 2008-2013 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 <dirent.h>
#include <pthread.h>
#include "xbps_api_impl.h"
static pthread_mutex_t cfg_mtx = PTHREAD_MUTEX_INITIALIZER;
static bool cfg_vpkgs_init;
static xbps_dictionary_t
get_pkg_in_array(xbps_array_t array, const char *str, bool virtual)
{
xbps_object_t obj = NULL;
xbps_object_iterator_t iter;
const char *pkgver;
char *dpkgn;
bool found = false;
iter = xbps_array_iterator(array);
assert(iter);
while ((obj = xbps_object_iterator_next(iter))) {
if (virtual) {
/*
* Check if package pattern matches
* any virtual package version in dictionary.
*/
if (xbps_pkgpattern_version(str))
found = xbps_match_virtual_pkg_in_dict(obj, str, true);
else
found = xbps_match_virtual_pkg_in_dict(obj, str, false);
if (found)
break;
} else if (xbps_pkgpattern_version(str)) {
/* match by pattern against pkgver */
if (!xbps_dictionary_get_cstring_nocopy(obj,
"pkgver", &pkgver))
continue;
if (xbps_pkgpattern_match(pkgver, str)) {
found = true;
break;
}
} else if (xbps_pkg_version(str)) {
/* match by exact pkgver */
if (!xbps_dictionary_get_cstring_nocopy(obj,
"pkgver", &pkgver))
continue;
if (strcmp(str, pkgver) == 0) {
found = true;
break;
}
} else {
/* match by pkgname */
if (!xbps_dictionary_get_cstring_nocopy(obj,
"pkgver", &pkgver))
continue;
dpkgn = xbps_pkg_name(pkgver);
assert(dpkgn);
if (strcmp(dpkgn, str) == 0) {
free(dpkgn);
found = true;
break;
}
free(dpkgn);
}
}
xbps_object_iterator_release(iter);
return found ? obj : NULL;
}
xbps_dictionary_t HIDDEN
xbps_find_pkg_in_array(xbps_array_t a, const char *s)
{
assert(xbps_object_type(a) == XBPS_TYPE_ARRAY);
assert(s);
return get_pkg_in_array(a, s, false);
}
xbps_dictionary_t HIDDEN
xbps_find_virtualpkg_in_array(struct xbps_handle *x,
xbps_array_t a,
const char *s)
{
xbps_dictionary_t pkgd;
const char *vpkg;
bool bypattern = false;
assert(x);
assert(xbps_object_type(a) == XBPS_TYPE_ARRAY);
assert(s);
if (xbps_pkgpattern_version(s))
bypattern = true;
if ((vpkg = vpkg_user_conf(x, s, bypattern))) {
if ((pkgd = get_pkg_in_array(a, vpkg, true)))
return pkgd;
}
return get_pkg_in_array(a, s, true);
}
static xbps_dictionary_t
match_pkg_by_pkgver(xbps_dictionary_t repod, const char *p)
{
xbps_dictionary_t d = NULL;
const char *pkgver;
char *pkgname;
/* exact match by pkgver */
if ((pkgname = xbps_pkg_name(p)) == NULL)
return NULL;
d = xbps_dictionary_get(repod, pkgname);
if (d) {
xbps_dictionary_get_cstring_nocopy(d, "pkgver", &pkgver);
if (strcmp(pkgver, p))
d = NULL;
}
free(pkgname);
return d;
}
static xbps_dictionary_t
match_pkg_by_pattern(xbps_dictionary_t repod, const char *p)
{
xbps_dictionary_t d = NULL;
const char *pkgver;
char *pkgname;
/* match by pkgpattern in pkgver */
if ((pkgname = xbps_pkgpattern_name(p)) == NULL) {
if ((pkgname = xbps_pkg_name(p))) {
free(pkgname);
return match_pkg_by_pkgver(repod, p);
}
return NULL;
}
d = xbps_dictionary_get(repod, pkgname);
if (d) {
xbps_dictionary_get_cstring_nocopy(d, "pkgver", &pkgver);
assert(pkgver);
if (!xbps_pkgpattern_match(pkgver, p))
d = NULL;
}
free(pkgname);
return d;
}
static void
config_inject_vpkgs(struct xbps_handle *xh)
{
DIR *dirp;
struct dirent *dp;
char *ext, *vpkgdir;
FILE *fp;
if (strcmp(xh->rootdir, "/"))
vpkgdir = xbps_xasprintf("%s/etc/xbps/virtualpkg.d",
xh->rootdir);
else
vpkgdir = strdup("/etc/xbps/virtualpkg.d");
if ((dirp = opendir(vpkgdir)) == NULL) {
free(vpkgdir);
return;
}
while ((dp = readdir(dirp)) != NULL) {
if ((strcmp(dp->d_name, "..") == 0) ||
(strcmp(dp->d_name, ".") == 0))
continue;
/* only process .conf files, ignore something else */
if ((ext = strrchr(dp->d_name, '.')) == NULL)
continue;
if (strcmp(ext, ".conf") == 0) {
char *path;
path = xbps_xasprintf("%s/%s", vpkgdir, dp->d_name);
fp = fopen(path, "r");
assert(fp);
if (cfg_parse_fp(xh->cfg, fp) != 0) {
xbps_error_printf("Failed to parse "
"vpkg conf file %s:\n", dp->d_name);
}
fclose(fp);
xbps_dbg_printf(xh, "Injected vpkgs from %s\n", path);
free(path);
}
}
closedir(dirp);
free(vpkgdir);
cfg_vpkgs_init = true;
}
const char HIDDEN *
vpkg_user_conf(struct xbps_handle *xhp,
const char *vpkg,
bool bypattern)
{
const char *vpkgver, *pkg = NULL;
char *vpkgname = NULL, *tmp;
unsigned int cnt;
if (xhp->cfg == NULL)
return NULL;
/* inject virtual packages from sysconfdir */
pthread_mutex_lock(&cfg_mtx);
if (!cfg_vpkgs_init)
config_inject_vpkgs(xhp);
pthread_mutex_unlock(&cfg_mtx);
if ((cnt = cfg_size(xhp->cfg, "virtual-package")) == 0) {
/* no virtual packages configured */
return NULL;
}
for (unsigned int i = 0; i < cnt; i++) {
cfg_t *sec = cfg_getnsec(xhp->cfg, "virtual-package", i);
for (unsigned int j = 0; j < cfg_size(sec, "targets"); j++) {
tmp = NULL;
vpkgver = cfg_getnstr(sec, "targets", j);
if (strchr(vpkgver, '_') == NULL) {
tmp = xbps_xasprintf("%s_1", vpkgver);
vpkgname = xbps_pkg_name(tmp);
free(tmp);
} else {
vpkgname = xbps_pkg_name(vpkgver);
}
if (vpkgname == NULL)
break;
if (bypattern) {
if (!xbps_pkgpattern_match(vpkgver, vpkg)) {
free(vpkgname);
continue;
}
} else {
if (strcmp(vpkg, vpkgname)) {
free(vpkgname);
continue;
}
}
/* virtual package matched in conffile */
pkg = cfg_title(sec);
xbps_dbg_printf(xhp,
"matched vpkg in conf `%s' for %s\n",
pkg, vpkg);
free(vpkgname);
break;
}
}
return pkg;
}
xbps_dictionary_t
xbps_find_virtualpkg_in_dict(struct xbps_handle *xhp,
xbps_dictionary_t d,
const char *pkg)
{
xbps_object_t obj;
xbps_object_iterator_t iter;
xbps_dictionary_t pkgd = NULL;
const char *vpkg;
bool bypattern = false;
if (xbps_pkgpattern_version(pkg))
bypattern = true;
/* Try matching vpkg from configuration files */
vpkg = vpkg_user_conf(xhp, pkg, bypattern);
if (vpkg != NULL) {
if (xbps_pkgpattern_version(vpkg))
pkgd = match_pkg_by_pattern(d, vpkg);
else if (xbps_pkg_version(vpkg))
pkgd = match_pkg_by_pkgver(d, vpkg);
else
pkgd = xbps_dictionary_get(d, vpkg);
if (pkgd)
return pkgd;
}
/* ... otherwise match the first one in dictionary */
iter = xbps_dictionary_iterator(d);
assert(iter);
while ((obj = xbps_object_iterator_next(iter))) {
pkgd = xbps_dictionary_get_keysym(d, obj);
if (xbps_match_virtual_pkg_in_dict(pkgd, pkg, bypattern)) {
xbps_object_iterator_release(iter);
return pkgd;
}
}
xbps_object_iterator_release(iter);
return NULL;
}
xbps_dictionary_t
xbps_find_pkg_in_dict(xbps_dictionary_t d, const char *pkg)
{
xbps_dictionary_t pkgd = NULL;
if (xbps_pkgpattern_version(pkg))
pkgd = match_pkg_by_pattern(d, pkg);
else if (xbps_pkg_version(pkg))
pkgd = match_pkg_by_pkgver(d, pkg);
else
pkgd = xbps_dictionary_get(d, pkg);
return pkgd;
}