void-packages/lib/plist.c

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/*-
* Copyright (c) 2008-2009 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 <limits.h>
#include <prop/proplib.h>
#include <xbps_api.h>
static prop_dictionary_t regpkgdb_dict;
static bool regpkgdb_initialized;
bool
xbps_add_obj_to_dict(prop_dictionary_t dict, prop_object_t obj,
const char *key)
{
assert(dict != NULL);
assert(obj != NULL);
assert(key != NULL);
if (!prop_dictionary_set(dict, key, obj)) {
prop_object_release(dict);
return false;
}
prop_object_release(obj);
return true;
}
bool
xbps_add_obj_to_array(prop_array_t array, prop_object_t obj)
{
assert(array != NULL);
assert(obj != NULL);
if (!prop_array_add(array, obj)) {
prop_object_release(array);
return false;
}
prop_object_release(obj);
return true;
}
int
xbps_callback_array_iter_in_repolist(int (*fn)(prop_object_t, void *, bool *),
void *arg)
{
prop_dictionary_t repolistd;
const char *rootdir;
char *plist;
int rv = 0;
assert(fn != NULL);
rootdir = xbps_get_rootdir();
plist = xbps_xasprintf("%s/%s/%s", rootdir,
XBPS_META_PATH, XBPS_REPOLIST);
if (plist == NULL)
return EINVAL;
/*
* Get the dictionary with the list of registered repositories.
*/
repolistd = prop_dictionary_internalize_from_file(plist);
if (repolistd == NULL)
return EINVAL;
/*
* Iterate over the repository pool and run the associated
* callback function. The loop is stopped when the bool
* argument is true or the cb returns non 0.
*/
rv = xbps_callback_array_iter_in_dict(repolistd, "repository-list",
fn, arg);
prop_object_release(repolistd);
free(plist);
return rv;
}
int
xbps_callback_array_iter_in_dict(prop_dictionary_t dict, const char *key,
int (*fn)(prop_object_t, void *, bool *),
void *arg)
{
prop_object_iterator_t iter;
prop_object_t obj;
int rv = 0;
bool cbloop_done = false;
assert(dict != NULL);
assert(key != NULL);
assert(fn != NULL);
iter = xbps_get_array_iter_from_dict(dict, key);
if (iter == NULL)
return EINVAL;
while ((obj = prop_object_iterator_next(iter))) {
rv = (*fn)(obj, arg, &cbloop_done);
if (rv != 0 || cbloop_done)
break;
}
prop_object_iterator_release(iter);
return rv;
}
int
xbps_callback_array_iter_reverse_in_dict(prop_dictionary_t dict,
const char *key, int (*fn)(prop_object_t, void *, bool *), void *arg)
{
prop_array_t array;
prop_object_t obj;
int rv = 0;
bool cbloop_done = false;
unsigned int cnt = 0;
assert(dict != NULL);
assert(key != NULL);
assert(fn != NULL);
array = prop_dictionary_get(dict, key);
if (array == NULL || prop_object_type(array) != PROP_TYPE_ARRAY)
return EINVAL;
if ((cnt = prop_array_count(array)) == 0)
return 0;
while (cnt--) {
obj = prop_array_get(array, cnt);
rv = (*fn)(obj, arg, &cbloop_done);
if (rv != 0 || cbloop_done)
break;
}
return rv;
}
prop_dictionary_t
xbps_find_pkg_from_plist(const char *plist, const char *pkgname)
{
prop_dictionary_t dict, obj, res;
assert(plist != NULL);
assert(pkgname != NULL);
dict = prop_dictionary_internalize_from_file(plist);
if (dict == NULL) {
errno = ENOENT;
return NULL;
}
obj = xbps_find_pkg_in_dict(dict, "packages", pkgname);
if (obj == NULL) {
prop_object_release(dict);
errno = ENOENT;
return NULL;
}
res = prop_dictionary_copy(obj);
prop_object_release(dict);
return res;
}
prop_dictionary_t
xbps_find_pkg_installed_from_plist(const char *pkgname)
{
prop_dictionary_t pkgd;
if (regpkgdb_initialized == false)
return NULL;
pkgd = xbps_find_pkg_in_dict(regpkgdb_dict, "packages", pkgname);
if (pkgd == NULL)
return NULL;
return prop_dictionary_copy(pkgd);
}
prop_dictionary_t
xbps_find_pkg_in_dict(prop_dictionary_t dict, const char *key,
const char *pkgname)
{
prop_object_iterator_t iter;
prop_object_t obj;
const char *dpkgn;
assert(dict != NULL);
assert(pkgname != NULL);
assert(key != NULL);
iter = xbps_get_array_iter_from_dict(dict, key);
if (iter == NULL)
return NULL;
while ((obj = prop_object_iterator_next(iter))) {
prop_dictionary_get_cstring_nocopy(obj, "pkgname", &dpkgn);
if (strcmp(dpkgn, pkgname) == 0)
break;
}
prop_object_iterator_release(iter);
return obj;
}
prop_dictionary_t
xbps_prepare_regpkgdb_dict(void)
{
const char *rootdir;
char *plist;
if (regpkgdb_initialized == false) {
rootdir = xbps_get_rootdir();
plist = xbps_xasprintf("%s/%s/%s", rootdir,
XBPS_META_PATH, XBPS_REGPKGDB);
if (plist == NULL)
return NULL;
regpkgdb_dict = prop_dictionary_internalize_from_file(plist);
if (regpkgdb_dict == NULL) {
free(plist);
return NULL;
}
free(plist);
regpkgdb_initialized = true;
}
return regpkgdb_dict;
}
void
xbps_release_regpkgdb_dict(void)
{
if (regpkgdb_initialized == false)
return;
prop_object_release(regpkgdb_dict);
regpkgdb_dict = NULL;
regpkgdb_initialized = false;
}
bool
xbps_find_string_in_array(prop_array_t array, const char *val)
{
prop_object_iterator_t iter;
prop_object_t obj;
assert(array != NULL);
assert(val != NULL);
iter = prop_array_iterator(array);
if (iter == NULL)
return false;
while ((obj = prop_object_iterator_next(iter)) != NULL) {
if (prop_object_type(obj) != PROP_TYPE_STRING)
continue;
if (prop_string_equals_cstring(obj, val)) {
prop_object_iterator_release(iter);
return true;
}
}
prop_object_iterator_release(iter);
return false;
}
prop_object_iterator_t
xbps_get_array_iter_from_dict(prop_dictionary_t dict, const char *key)
{
prop_array_t array;
assert(dict != NULL);
assert(key != NULL);
array = prop_dictionary_get(dict, key);
if (array == NULL || prop_object_type(array) != PROP_TYPE_ARRAY)
return NULL;
return prop_array_iterator(array);
}
int
xbps_remove_string_from_array(prop_array_t array, const char *str)
{
prop_object_t obj;
prop_object_iterator_t iter;
size_t idx = 0;
bool found = false;
assert(array != NULL);
assert(str != NULL);
iter = prop_array_iterator(array);
if (iter == NULL)
return ENOMEM;
while ((obj = prop_object_iterator_next(iter)) != NULL) {
if (prop_object_type(obj) != PROP_TYPE_STRING)
continue;
if (prop_string_equals_cstring(obj, str)) {
found = true;
break;
}
idx++;
}
prop_object_iterator_release(iter);
if (found == false)
return ENOENT;
prop_array_remove(array, idx);
return 0;
}
int
xbps_remove_pkg_from_dict(prop_dictionary_t dict, const char *key,
const char *pkgname)
{
prop_array_t array;
prop_object_t obj;
prop_object_iterator_t iter;
const char *curpkgname;
size_t i = 0;
bool found = false;
assert(dict != NULL);
assert(key != NULL);
assert(pkgname != NULL);
array = prop_dictionary_get(dict, key);
if (array == NULL || prop_object_type(array) != PROP_TYPE_ARRAY)
return EINVAL;
iter = prop_array_iterator(array);
if (iter == NULL)
return errno;
/* Iterate over the array of dictionaries to find its index. */
while ((obj = prop_object_iterator_next(iter))) {
prop_dictionary_get_cstring_nocopy(obj, "pkgname",
&curpkgname);
if ((curpkgname && (strcmp(curpkgname, pkgname) == 0))) {
found = true;
break;
}
i++;
}
prop_object_iterator_release(iter);
if (found == true)
prop_array_remove(array, i);
else
return ENOENT;
return 0;
}
int
xbps_remove_pkg_dict_from_file(const char *pkg, const char *plist)
{
prop_dictionary_t pdict;
int rv = 0;
assert(pkg != NULL);
assert(plist != NULL);
pdict = prop_dictionary_internalize_from_file(plist);
if (pdict == NULL)
return errno;
rv = xbps_remove_pkg_from_dict(pdict, "packages", pkg);
if (rv != 0) {
prop_object_release(pdict);
return rv;
}
if (!prop_dictionary_externalize_to_file(pdict, plist)) {
prop_object_release(pdict);
return errno;
}
prop_object_release(pdict);
return 0;
}
prop_dictionary_t
xbps_read_dict_from_archive_entry(struct archive *ar,
struct archive_entry *entry)
{
prop_dictionary_t d;
size_t buflen = 0;
ssize_t nbytes = -1;
char *buf;
assert(ar != NULL);
assert(entry != NULL);
buflen = (size_t)archive_entry_size(entry);
buf = malloc(buflen);
if (buf == NULL)
return NULL;
nbytes = archive_read_data(ar, buf, buflen);
if ((size_t)nbytes != buflen) {
free(buf);
return NULL;
}
d = prop_dictionary_internalize(buf);
free(buf);
if (d == NULL)
return NULL;
else if (prop_object_type(d) != PROP_TYPE_DICTIONARY) {
prop_object_release(d);
return NULL;
}
return d;
}