332 lines
8.8 KiB
C
332 lines
8.8 KiB
C
/*-
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* Copyright (c) 2009-2013 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 <dirent.h>
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#include <libgen.h>
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#include "xbps_api_impl.h"
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int HIDDEN
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xbps_remove_pkg_files(struct xbps_handle *xhp,
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prop_dictionary_t dict,
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const char *key,
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const char *pkgver)
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{
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struct stat st;
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prop_array_t array;
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prop_object_iterator_t iter;
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prop_object_t obj;
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const char *file, *sha256, *curobj = NULL;
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char *path = NULL, *pkgname = NULL;
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char buf[PATH_MAX];
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int rv = 0;
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assert(prop_object_type(dict) == PROP_TYPE_DICTIONARY);
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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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prop_array_count(array) == 0)
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return 0;
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iter = xbps_array_iter_from_dict(dict, key);
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if (iter == NULL)
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return ENOMEM;
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if (strcmp(key, "files") == 0)
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curobj = "file";
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else if (strcmp(key, "conf_files") == 0)
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curobj = "configuration file";
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else if (strcmp(key, "links") == 0)
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curobj = "link";
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else if (strcmp(key, "dirs") == 0)
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curobj = "directory";
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pkgname = xbps_pkg_name(pkgver);
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assert(pkgname);
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while ((obj = prop_object_iterator_next(iter))) {
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prop_dictionary_get_cstring_nocopy(obj, "file", &file);
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path = xbps_xasprintf("%s/%s", xhp->rootdir, file);
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if ((strcmp(key, "files") == 0) ||
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(strcmp(key, "conf_files") == 0)) {
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/*
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* Check SHA256 hash in regular files and
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* configuration files.
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*/
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prop_dictionary_get_cstring_nocopy(obj,
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"sha256", &sha256);
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rv = xbps_file_hash_check(path, sha256);
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if (rv == ENOENT) {
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/* missing file, ignore it */
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xbps_set_cb_state(xhp,
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XBPS_STATE_REMOVE_FILE_HASH_FAIL,
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rv, pkgver,
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"%s: failed to check hash for %s `%s': %s",
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pkgver, curobj, file, strerror(rv));
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free(path);
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rv = 0;
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continue;
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} else if (rv == ERANGE) {
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rv = 0;
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if ((xhp->flags &
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XBPS_FLAG_FORCE_REMOVE_FILES) == 0) {
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xbps_set_cb_state(xhp,
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XBPS_STATE_REMOVE_FILE_HASH_FAIL,
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0, pkgver,
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"%s: %s `%s' SHA256 mismatch, "
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"preserving file", pkgver,
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curobj, file);
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free(path);
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continue;
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} else {
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xbps_set_cb_state(xhp,
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XBPS_STATE_REMOVE_FILE_HASH_FAIL,
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0, pkgver,
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"%s: %s `%s' SHA256 mismatch, "
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"forcing removal", pkgver,
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curobj, file);
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}
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} else if (rv != 0 && rv != ERANGE) {
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xbps_set_cb_state(xhp,
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XBPS_STATE_REMOVE_FILE_HASH_FAIL,
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rv, pkgver,
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"%s: [remove] failed to check hash for "
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"%s `%s': %s", pkgver, curobj, file,
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strerror(rv));
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free(path);
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break;
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}
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} else if (strcmp(key, "links") == 0) {
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/*
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* All regular files from package were removed at this
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* point, so we will only remove dangling symlinks.
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*/
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if (realpath(path, buf) == NULL) {
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if (errno != ENOENT && errno != ELOOP) {
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free(path);
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rv = errno;
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break;
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}
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}
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if (stat(buf, &st) == 0) {
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free(path);
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continue;
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}
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}
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/*
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* Remove the object if possible.
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*/
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if (remove(path) == -1) {
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FILE_FAIL,
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errno, pkgver,
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"%s: failed to remove %s `%s': %s", pkgver,
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curobj, file, strerror(errno));
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errno = 0;
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} else {
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/* success */
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FILE,
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0, pkgver, "Removed %s `%s'", curobj, file);
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}
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free(path);
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}
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prop_object_iterator_release(iter);
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free(pkgname);
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return rv;
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}
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int HIDDEN
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xbps_remove_pkg(struct xbps_handle *xhp,
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const char *pkgver,
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bool update,
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bool soft_replace)
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{
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prop_dictionary_t pkgd = NULL;
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char *pkgname, *buf = NULL;
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int rv = 0;
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pkg_state_t state = 0;
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assert(xhp);
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assert(pkgver);
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pkgname = xbps_pkg_name(pkgver);
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assert(pkgname);
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if ((rv = xbps_pkg_state_installed(xhp, pkgname, &state)) != 0)
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goto out;
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xbps_dbg_printf(xhp, "attempting to remove %s state %d\n",
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pkgver, state);
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if (!update)
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE, 0, pkgver, NULL);
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if (chdir(xhp->rootdir) == -1) {
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rv = errno;
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FAIL,
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rv, pkgver,
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"%s: [remove] failed to chdir to rootdir `%s': %s",
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pkgver, xhp->rootdir, strerror(rv));
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goto out;
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}
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/* internalize pkg dictionary from metadir */
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buf = xbps_xasprintf("%s/.%s.plist", xhp->metadir, pkgname);
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pkgd = prop_dictionary_internalize_from_file(buf);
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free(buf);
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if (pkgd == NULL)
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xbps_dbg_printf(xhp, "WARNING: metaplist for %s "
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"doesn't exist!\n", pkgver);
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/* If package was "half-removed", remove it fully. */
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if (state == XBPS_PKG_STATE_HALF_REMOVED)
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goto purge;
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/*
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* Run the pre remove action.
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*/
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if (pkgd) {
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rv = xbps_pkg_exec_script(xhp, pkgd, "remove-script",
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"pre", update);
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if (rv != 0) {
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FAIL,
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errno, pkgver,
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"%s: [remove] REMOVE script failed to "
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"execute pre ACTION: %s",
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pkgver, strerror(rv));
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goto out;
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}
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}
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/*
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* If updating a package, we just need to execute the current
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* pre-remove action target and we are done. Its files will be
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* overwritten later in unpack phase.
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*/
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if (update) {
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if (pkgd)
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prop_object_release(pkgd);
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free(pkgname);
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return 0;
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} else if (soft_replace) {
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/*
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* Soft replace a package. Do not remove its files, but
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* execute PURGE action, remove metadata files and unregister
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* from pkgdb.
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*/
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goto softreplace;
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}
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if (pkgd) {
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/* Remove regular files */
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if ((rv = xbps_remove_pkg_files(xhp, pkgd, "files", pkgver)) != 0)
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goto out;
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/* Remove configuration files */
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if ((rv = xbps_remove_pkg_files(xhp, pkgd, "conf_files", pkgver)) != 0)
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goto out;
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/* Remove links */
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if ((rv = xbps_remove_pkg_files(xhp, pkgd, "links", pkgver)) != 0)
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goto out;
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/* Remove dirs */
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if ((rv = xbps_remove_pkg_files(xhp, pkgd, "dirs", pkgver)) != 0)
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goto out;
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/*
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* Execute the post REMOVE action if file exists and we aren't
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* updating the package.
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*/
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rv = xbps_pkg_exec_script(xhp, pkgd, "remove-script", "post", false);
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if (rv != 0) {
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FAIL,
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rv, pkgver,
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"%s: [remove] REMOVE script failed to execute "
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"post ACTION: %s", pkgver, strerror(rv));
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goto out;
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}
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}
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softreplace:
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/*
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* Set package state to "half-removed".
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*/
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rv = xbps_set_pkg_state_installed(xhp, pkgver,
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XBPS_PKG_STATE_HALF_REMOVED);
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if (rv != 0) {
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FAIL,
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rv, pkgver,
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"%s: [remove] failed to set state to half-removed: %s",
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pkgver, strerror(rv));
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goto out;
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}
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purge:
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/*
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* Execute the purge REMOVE action if file exists.
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*/
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if (pkgd) {
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rv = xbps_pkg_exec_script(xhp, pkgd, "remove-script", "purge", false);
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if (rv != 0) {
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FAIL,
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rv, pkgver,
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"%s: REMOVE script failed to execute "
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"purge ACTION: %s", pkgver, strerror(rv));
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goto out;
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}
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prop_object_release(pkgd);
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}
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/*
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* Remove package metadata plist.
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*/
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buf = xbps_xasprintf("%s/.%s.plist", xhp->metadir, pkgname);
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if (remove(buf) == -1) {
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if (errno != ENOENT) {
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_FAIL,
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rv, pkgver,
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"%s: failed to remove metadata file: %s",
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pkgver, strerror(errno));
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}
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}
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free(buf);
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/*
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* Unregister package from pkgdb.
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*/
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prop_dictionary_remove(xhp->pkgdb, pkgname);
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if ((rv = xbps_pkgdb_update(xhp, true)) != 0)
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goto out;
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xbps_dbg_printf(xhp, "[remove] unregister %s returned %d\n", pkgver, rv);
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xbps_set_cb_state(xhp, XBPS_STATE_REMOVE_DONE, 0, pkgver, NULL);
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out:
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if (pkgname != NULL)
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free(pkgname);
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return rv;
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}
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