677 lines
14 KiB
C
677 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 <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 <zlib.h>
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#include <xbps_api.h>
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#include "xbps_api_impl.h"
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/**
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* @file lib/plist.c
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* @brief PropertyList generic routines
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* @defgroup plist PropertyList generic functions
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*
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* These functions manipulate plist files and objects shared by almost
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* all library functions.
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*/
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bool
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xbps_add_obj_to_dict(prop_dictionary_t dict, prop_object_t obj,
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const char *key)
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{
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assert(dict != NULL);
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assert(obj != NULL);
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assert(key != NULL);
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if (!prop_dictionary_set(dict, key, obj)) {
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prop_object_release(dict);
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errno = EINVAL;
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return false;
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}
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prop_object_release(obj);
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return true;
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}
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bool
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xbps_add_obj_to_array(prop_array_t array, prop_object_t obj)
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{
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assert(array != NULL);
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assert(obj != NULL);
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if (!prop_array_add(array, obj)) {
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prop_object_release(array);
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errno = EINVAL;
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return false;
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}
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prop_object_release(obj);
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return true;
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}
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int
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xbps_callback_array_iter(prop_array_t array,
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int (*fn)(prop_object_t, void *, bool *),
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void *arg)
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{
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prop_object_t obj;
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prop_object_iterator_t iter;
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int rv = 0;
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bool loop_done = false;
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assert(array != NULL);
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assert(fn != NULL);
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iter = prop_array_iterator(array);
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if (iter == NULL)
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return ENOMEM;
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while ((obj = prop_object_iterator_next(iter)) != NULL) {
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rv = (*fn)(obj, arg, &loop_done);
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if (rv != 0 || loop_done)
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break;
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}
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prop_object_iterator_release(iter);
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return rv;
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}
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int
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xbps_callback_array_iter_in_dict(prop_dictionary_t dict,
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const char *key,
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int (*fn)(prop_object_t, void *, bool *),
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void *arg)
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{
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prop_object_iterator_t iter;
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prop_object_t obj;
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int rv = 0;
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bool cbloop_done = false;
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assert(dict != NULL);
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assert(key != NULL);
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assert(fn != NULL);
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iter = xbps_get_array_iter_from_dict(dict, key);
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if (iter == NULL)
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return EINVAL;
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while ((obj = prop_object_iterator_next(iter))) {
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rv = (*fn)(obj, arg, &cbloop_done);
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if (rv != 0 || cbloop_done)
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break;
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}
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prop_object_iterator_release(iter);
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return rv;
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}
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int
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xbps_callback_array_iter_reverse_in_dict(prop_dictionary_t dict,
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const char *key,
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int (*fn)(prop_object_t, void *, bool *),
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void *arg)
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{
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prop_array_t array;
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prop_object_t obj;
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int rv = 0;
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bool cbloop_done = false;
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unsigned int cnt = 0;
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assert(dict != NULL);
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assert(key != NULL);
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assert(fn != NULL);
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array = prop_dictionary_get(dict, key);
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if (prop_object_type(array) != PROP_TYPE_ARRAY) {
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xbps_dbg_printf("invalid key '%s' for dictionary", key);
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return EINVAL;
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}
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if ((cnt = prop_array_count(array)) == 0)
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return 0;
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while (cnt--) {
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obj = prop_array_get(array, cnt);
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rv = (*fn)(obj, arg, &cbloop_done);
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if (rv != 0 || cbloop_done)
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break;
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}
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return rv;
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}
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prop_dictionary_t
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xbps_find_pkg_dict_from_plist_by_name(const char *plist, const char *pkgname)
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{
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prop_dictionary_t dict, obj, res;
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assert(plist != NULL);
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assert(pkgname != NULL);
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dict = prop_dictionary_internalize_from_zfile(plist);
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if (dict == NULL) {
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xbps_dbg_printf("cannot internalize %s for pkg %s: %s",
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plist, pkgname, strerror(errno));
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return NULL;
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}
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obj = xbps_find_pkg_in_dict_by_name(dict, "packages", pkgname);
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if (obj == NULL) {
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prop_object_release(dict);
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return NULL;
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}
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res = prop_dictionary_copy(obj);
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prop_object_release(dict);
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return res;
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}
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prop_dictionary_t
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xbps_find_pkg_dict_installed(const char *str, bool bypattern)
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{
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prop_dictionary_t d, pkgd, rpkgd = NULL;
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pkg_state_t state = 0;
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assert(str != NULL);
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if ((d = xbps_regpkgdb_dictionary_get()) == NULL)
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return NULL;
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if (bypattern)
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pkgd = xbps_find_pkg_in_dict_by_pattern(d, "packages", str);
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else
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pkgd = xbps_find_pkg_in_dict_by_name(d, "packages", str);
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if (pkgd == NULL)
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goto out;
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if (xbps_get_pkg_state_dictionary(pkgd, &state) != 0)
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goto out;
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switch (state) {
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case XBPS_PKG_STATE_INSTALLED:
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case XBPS_PKG_STATE_UNPACKED:
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rpkgd = prop_dictionary_copy(pkgd);
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break;
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case XBPS_PKG_STATE_CONFIG_FILES:
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errno = ENOENT;
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xbps_dbg_printf("'%s' installed but its state is "
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"config-files\n",str);
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break;
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default:
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break;
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}
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out:
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xbps_regpkgdb_dictionary_release();
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return rpkgd;
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}
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static prop_dictionary_t
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find_virtual_pkg_in_dict(prop_object_iterator_t iter,
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const char *str,
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bool bypattern)
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{
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prop_object_t obj;
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prop_array_t provides;
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bool found = false;
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prop_object_iterator_reset(iter);
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while ((obj = prop_object_iterator_next(iter))) {
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if ((provides = prop_dictionary_get(obj, "provides")) == NULL)
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continue;
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if (bypattern)
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found = xbps_find_pkgpattern_in_array(provides, str);
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else
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found = xbps_find_pkgname_in_array(provides, str);
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if (found)
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break;
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}
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prop_object_iterator_release(iter);
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return obj;
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}
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static prop_dictionary_t
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find_pkg_in_dict(prop_dictionary_t d,
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const char *key,
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const char *str,
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bool bypattern)
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{
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prop_object_iterator_t iter;
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prop_object_t obj = NULL;
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const char *dpkgn, *pkgver;
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assert(d != NULL);
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assert(str != NULL);
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assert(key != NULL);
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if ((iter = xbps_get_array_iter_from_dict(d, key)) == NULL)
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return NULL;
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while ((obj = prop_object_iterator_next(iter))) {
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if (bypattern) {
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prop_dictionary_get_cstring_nocopy(obj,
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"pkgver", &pkgver);
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if (xbps_pkgpattern_match(pkgver, __UNCONST(str)))
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break;
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} else {
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prop_dictionary_get_cstring_nocopy(obj,
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"pkgname", &dpkgn);
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if (strcmp(dpkgn, str) == 0)
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break;
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}
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}
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if (obj == NULL) {
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/*
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* No pkg was found, try virtual package by name
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* or by pattern.
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*/
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if (bypattern)
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obj = find_virtual_pkg_in_dict(iter, str, true);
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else
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obj = find_virtual_pkg_in_dict(iter, str, false);
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if (obj == NULL) {
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errno = ENOENT;
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return NULL;
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}
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}
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prop_object_iterator_release(iter);
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return obj;
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}
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prop_dictionary_t
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xbps_find_pkg_in_dict_by_name(prop_dictionary_t dict,
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const char *key,
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const char *pkgname)
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{
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return find_pkg_in_dict(dict, key, pkgname, false);
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}
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prop_dictionary_t
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xbps_find_pkg_in_dict_by_pattern(prop_dictionary_t dict,
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const char *key,
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const char *pattern)
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{
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return find_pkg_in_dict(dict, key, pattern, true);
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}
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static bool
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find_string_in_array(prop_array_t array, const char *str, int mode)
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{
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prop_object_iterator_t iter;
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prop_object_t obj;
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const char *pkgdep;
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char *curpkgname;
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bool found = false;
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assert(array != NULL);
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assert(pkgname != NULL);
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iter = prop_array_iterator(array);
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if (iter == NULL)
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return false;
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while ((obj = prop_object_iterator_next(iter))) {
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assert(prop_object_type(obj) == PROP_TYPE_STRING);
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if (mode == 0) {
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/* match by string */
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if (prop_string_equals_cstring(obj, str)) {
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found = true;
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break;
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}
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} else if (mode == 1) {
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/* match by pkgname */
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pkgdep = prop_string_cstring_nocopy(obj);
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curpkgname = xbps_get_pkg_name(pkgdep);
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if (curpkgname == NULL)
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break;
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if (strcmp(curpkgname, str) == 0) {
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free(curpkgname);
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found = true;
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break;
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}
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free(curpkgname);
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} else if (mode == 2) {
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/* match by pkgpattern */
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pkgdep = prop_string_cstring_nocopy(obj);
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if (xbps_pkgpattern_match(pkgdep, __UNCONST(str))) {
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found = true;
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break;
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}
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}
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}
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prop_object_iterator_release(iter);
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return found;
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}
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bool
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xbps_find_string_in_array(prop_array_t array, const char *str)
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{
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return find_string_in_array(array, str, 0);
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}
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bool
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xbps_find_pkgname_in_array(prop_array_t array, const char *pkgname)
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{
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return find_string_in_array(array, pkgname, 1);
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}
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bool
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xbps_find_pkgpattern_in_array(prop_array_t array, const char *pattern)
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{
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return find_string_in_array(array, pattern, 2);
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}
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prop_object_iterator_t
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xbps_get_array_iter_from_dict(prop_dictionary_t dict, const char *key)
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{
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prop_array_t array;
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assert(dict != NULL);
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assert(key != NULL);
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array = prop_dictionary_get(dict, key);
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if (prop_object_type(array) != PROP_TYPE_ARRAY) {
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errno = EINVAL;
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return NULL;
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}
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return prop_array_iterator(array);
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}
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prop_dictionary_t
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xbps_get_pkg_dict_from_metadata_plist(const char *pkgn, const char *plist)
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{
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prop_dictionary_t plistd = NULL;
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char *plistf;
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assert(pkgn != NULL);
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assert(plist != NULL);
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plistf = xbps_xasprintf("%s/%s/metadata/%s/%s",
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xbps_get_rootdir(), XBPS_META_PATH, pkgn, plist);
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if (plistf == NULL)
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return NULL;
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plistd = prop_dictionary_internalize_from_zfile(plistf);
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free(plistf);
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if (plistd == NULL) {
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xbps_dbg_printf("cannot read from plist file %s for %s: %s\n",
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plist, pkgn, strerror(errno));
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return NULL;
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}
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return plistd;
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}
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bool
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xbps_remove_string_from_array(prop_array_t array, const char *str)
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{
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prop_object_t obj;
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prop_object_iterator_t iter;
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unsigned int idx = 0;
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bool found = false;
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assert(array != NULL);
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assert(str != NULL);
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iter = prop_array_iterator(array);
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if (iter == NULL)
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return false;
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while ((obj = prop_object_iterator_next(iter)) != NULL) {
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if (prop_string_equals_cstring(obj, str)) {
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found = true;
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break;
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}
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idx++;
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}
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prop_object_iterator_release(iter);
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if (!found) {
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errno = ENOENT;
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return false;
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}
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prop_array_remove(array, idx);
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return true;
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}
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bool
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xbps_remove_pkg_from_dict(prop_dictionary_t dict,
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const char *key,
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const char *pkgname)
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{
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prop_array_t array;
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prop_object_t obj;
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prop_object_iterator_t iter;
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const char *curpkgname;
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unsigned int i = 0;
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bool found = false;
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assert(dict != NULL);
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assert(key != NULL);
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assert(pkgname != NULL);
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array = prop_dictionary_get(dict, key);
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if (prop_object_type(array) != PROP_TYPE_ARRAY) {
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errno = EINVAL;
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xbps_dbg_printf("invalid array type for key: %s pkgname: %s\n",
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key, pkgname);
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return false;
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}
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iter = prop_array_iterator(array);
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if (iter == NULL)
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return false;
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/* Iterate over the array of dictionaries to find its index. */
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while ((obj = prop_object_iterator_next(iter))) {
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prop_dictionary_get_cstring_nocopy(obj, "pkgname", &curpkgname);
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if ((curpkgname && (strcmp(curpkgname, pkgname) == 0))) {
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found = true;
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break;
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}
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i++;
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}
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prop_object_iterator_release(iter);
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if (found) {
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prop_array_remove(array, i);
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return true;
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}
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errno = ENOENT;
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return false;
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}
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bool
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xbps_remove_pkg_dict_from_file(const char *pkg, const char *plist)
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{
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prop_dictionary_t pdict;
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assert(pkg != NULL);
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assert(plist != NULL);
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pdict = prop_dictionary_internalize_from_zfile(plist);
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if (pdict == NULL) {
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xbps_dbg_printf("'%s' cannot read from file %s: %s\n",
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pkg, plist, strerror(errno));
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return false;
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}
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if (!xbps_remove_pkg_from_dict(pdict, "packages", pkg)) {
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prop_object_release(pdict);
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return false;
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}
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if (!prop_dictionary_externalize_to_zfile(pdict, plist)) {
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xbps_dbg_printf("'%s' cannot write plist file %s: %s\n",
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pkg, plist, strerror(errno));
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prop_object_release(pdict);
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return false;
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}
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prop_object_release(pdict);
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return true;
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}
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/*
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* Takes a compressed data buffer, decompresses it and returns the
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* new buffer uncompressed if all was right.
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*/
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#define _READ_CHUNK 512
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static char *
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_xbps_uncompress_plist_data(char *xml, size_t len)
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{
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z_stream strm;
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unsigned char out[_READ_CHUNK];
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char *uncomp_xml = NULL;
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size_t have;
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ssize_t totalsize = 0;
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int rv = 0;
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assert(xml != NULL);
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/* Decompress the mmap'ed buffer with zlib */
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strm.zalloc = Z_NULL;
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strm.zfree = Z_NULL;
|
|
strm.opaque = Z_NULL;
|
|
strm.avail_in = 0;
|
|
strm.next_in = Z_NULL;
|
|
|
|
/* 15+16 to use gzip method */
|
|
if (inflateInit2(&strm, 15+16) != Z_OK)
|
|
return NULL;
|
|
|
|
strm.avail_in = len;
|
|
strm.next_in = (unsigned char *)xml;
|
|
|
|
/* Output buffer (uncompressed) */
|
|
uncomp_xml = malloc(_READ_CHUNK);
|
|
if (uncomp_xml == NULL) {
|
|
(void)inflateEnd(&strm);
|
|
return NULL;
|
|
}
|
|
|
|
/* Inflate the input buffer and copy into 'uncomp_xml' */
|
|
do {
|
|
strm.avail_out = _READ_CHUNK;
|
|
strm.next_out = out;
|
|
rv = inflate(&strm, Z_NO_FLUSH);
|
|
switch (rv) {
|
|
case Z_DATA_ERROR:
|
|
/*
|
|
* Wrong compressed data or uncompressed, try
|
|
* normal method as last resort.
|
|
*/
|
|
(void)inflateEnd(&strm);
|
|
free(uncomp_xml);
|
|
errno = EAGAIN;
|
|
return NULL;
|
|
case Z_STREAM_ERROR:
|
|
case Z_NEED_DICT:
|
|
case Z_MEM_ERROR:
|
|
(void)inflateEnd(&strm);
|
|
free(uncomp_xml);
|
|
return NULL;
|
|
}
|
|
have = _READ_CHUNK - strm.avail_out;
|
|
totalsize += have;
|
|
uncomp_xml = realloc(uncomp_xml, totalsize);
|
|
memcpy(uncomp_xml + totalsize - have, out, have);
|
|
} while (strm.avail_out == 0);
|
|
|
|
/* we are done */
|
|
(void)inflateEnd(&strm);
|
|
|
|
return uncomp_xml;
|
|
}
|
|
#undef _READ_CHUNK
|
|
|
|
prop_dictionary_t HIDDEN
|
|
xbps_read_dict_from_archive_entry(struct archive *ar,
|
|
struct archive_entry *entry)
|
|
{
|
|
prop_dictionary_t d = NULL;
|
|
size_t buflen = 0;
|
|
ssize_t nbytes = -1;
|
|
char *buf, *uncomp_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;
|
|
}
|
|
|
|
uncomp_buf = _xbps_uncompress_plist_data(buf, buflen);
|
|
if (uncomp_buf == NULL) {
|
|
if (errno && errno != EAGAIN) {
|
|
/* Error while decompressing */
|
|
free(buf);
|
|
return NULL;
|
|
} else if (errno == EAGAIN) {
|
|
/* Not a compressed data, try again */
|
|
errno = 0;
|
|
d = prop_dictionary_internalize(buf);
|
|
free(buf);
|
|
}
|
|
} else {
|
|
/* We have the uncompressed data */
|
|
d = prop_dictionary_internalize(uncomp_buf);
|
|
free(uncomp_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;
|
|
}
|