322 lines
7.2 KiB
C
322 lines
7.2 KiB
C
/*-
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* Copyright (c) 2009 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 <limits.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <xbps_api.h>
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static int remove_pkg_files(prop_object_t, void *, bool *);
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int
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xbps_unregister_pkg(const char *pkgname)
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{
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const char *rootdir;
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char *plist;
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int rv = 0;
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assert(pkgname != NULL);
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rootdir = xbps_get_rootdir();
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plist = xbps_xasprintf("%s/%s/%s", rootdir,
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XBPS_META_PATH, XBPS_REGPKGDB);
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if (plist == NULL)
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return EINVAL;
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rv = xbps_remove_pkg_dict_from_file(pkgname, plist);
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free(plist);
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return rv;
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}
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static int
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xbps_remove_binary_pkg_meta(const char *pkgname)
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{
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struct dirent *dp;
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DIR *dirp;
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const char *rootdir;
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char *metadir, *path;
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int flags = 0, rv = 0;
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assert(pkgname != NULL);
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rootdir = xbps_get_rootdir();
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flags = xbps_get_flags();
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metadir = xbps_xasprintf("%s/%s/metadata/%s", rootdir,
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XBPS_META_PATH, pkgname);
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if (metadir == NULL)
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return errno;
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dirp = opendir(metadir);
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if (dirp == NULL) {
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free(metadir);
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return errno;
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}
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while ((dp = readdir(dirp)) != NULL) {
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if ((strcmp(dp->d_name, ".") == 0) ||
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(strcmp(dp->d_name, "..") == 0))
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continue;
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path = xbps_xasprintf("%s/%s", metadir, dp->d_name);
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if (path == NULL) {
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(void)closedir(dirp);
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free(metadir);
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return -1;
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}
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if ((rv = unlink(path)) == -1) {
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if (flags & XBPS_VERBOSE)
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printf("WARNING: can't remove %s (%s)\n",
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pkgname, strerror(errno));
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}
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free(path);
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}
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(void)closedir(dirp);
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rv = rmdir(metadir);
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free(metadir);
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return rv;
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}
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static int
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remove_pkg_files(prop_object_t obj, void *arg, bool *loop_done)
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{
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prop_bool_t bobj;
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const char *file, *rootdir, *sha256, *type;
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char *path = NULL;
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int flags = 0, rv = 0;
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(void)arg;
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(void)loop_done;
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rootdir = xbps_get_rootdir();
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flags = xbps_get_flags();
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if (!prop_dictionary_get_cstring_nocopy(obj, "file", &file))
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return EINVAL;
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path = xbps_xasprintf("%s/%s", rootdir, file);
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if (path == NULL)
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return EINVAL;
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if (!prop_dictionary_get_cstring_nocopy(obj, "type", &type)) {
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free(path);
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return EINVAL;
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}
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if (strcmp(type, "file") == 0) {
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prop_dictionary_get_cstring_nocopy(obj, "sha256", &sha256);
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rv = xbps_check_file_hash(path, sha256);
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if (rv != 0 && rv != ERANGE) {
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free(path);
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return rv;
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}
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bobj = prop_dictionary_get(obj, "conf_file");
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if (bobj != NULL) {
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/*
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* If hash is the same than the one provided by
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* package, that means the file hasn't been changed
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* and therefore can be removed. Otherwise keep it.
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*/
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if (rv == ERANGE)
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goto out;
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}
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if (rv == ERANGE) {
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if (flags & XBPS_VERBOSE)
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printf("WARNING: SHA256 doesn't match for "
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"file %s, ignoring...\n", file);
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goto out;
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}
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if ((rv = remove(path)) == -1) {
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if (flags & XBPS_VERBOSE)
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printf("WARNING: can't remove file %s (%s)\n",
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file, strerror(errno));
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goto out;
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}
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if (flags & XBPS_VERBOSE)
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printf("Removed file: %s\n", file);
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goto out;
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} else if (strcmp(type, "dir") == 0) {
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if ((bobj = prop_dictionary_get(obj, "keep")) != NULL) {
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/* Skip permanent directory. */
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return 0;
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}
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if ((rv = rmdir(path)) == -1) {
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if (errno == ENOTEMPTY)
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goto out;
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if (flags & XBPS_VERBOSE) {
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printf("WARNING: can't remove "
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"directory %s (%s)\n", file,
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strerror(errno));
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goto out;
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}
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if (flags & XBPS_VERBOSE)
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printf("Removed directory: %s\n", file);
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}
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} else if (strcmp(type, "link") == 0) {
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if ((rv = remove(path)) == -1) {
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if (flags & XBPS_VERBOSE)
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printf("WARNING: can't remove link %s (%s)\n",
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file, strerror(errno));
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goto out;
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}
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if (flags & XBPS_VERBOSE)
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printf("Removed link: %s\n", file);
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}
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out:
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free(path);
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return 0;
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}
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int
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xbps_remove_binary_pkg(const char *pkgname, bool update)
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{
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prop_dictionary_t dict;
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const char *rootdir = xbps_get_rootdir();
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char *path, *buf;
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int rv = 0;
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bool prepostf = false;
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assert(pkgname != NULL);
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/*
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* Check if pkg is installed before anything else.
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*/
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if (xbps_check_is_installed_pkgname(pkgname) == false)
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return ENOENT;
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if (strcmp(rootdir, "") == 0)
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rootdir = "/";
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if (chdir(rootdir) == -1)
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return errno;
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buf = xbps_xasprintf(".%s/metadata/%s/REMOVE",
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XBPS_META_PATH, pkgname);
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if (buf == NULL)
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return errno;
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/*
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* Find out if the REMOVE file exists.
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*/
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if (access(buf, R_OK) == 0) {
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/*
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* Run the pre remove action.
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*/
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prepostf = true;
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(void)printf("\n");
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(void)fflush(stdout);
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rv = xbps_file_chdir_exec(rootdir, buf, "pre", pkgname, NULL);
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if (rv != 0) {
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printf("%s: prerm action target error (%s)\n", pkgname,
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strerror(errno));
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free(buf);
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return rv;
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}
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}
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/*
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* Iterate over the pkg file list dictionary and remove all
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* files/dirs associated.
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*/
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path = xbps_xasprintf("%s/%s/metadata/%s/files.plist",
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rootdir, XBPS_META_PATH, pkgname);
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if (path == NULL) {
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free(buf);
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return errno;
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}
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dict = prop_dictionary_internalize_from_file(path);
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if (dict == NULL) {
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free(buf);
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free(path);
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return errno;
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}
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free(path);
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rv = xbps_callback_array_iter_in_dict(dict, "filelist",
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remove_pkg_files, NULL);
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if (rv != 0) {
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free(buf);
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prop_object_release(dict);
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return rv;
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}
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prop_object_release(dict);
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/*
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* Run the post remove action if REMOVE file is there.
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*/
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if (prepostf) {
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if ((rv = xbps_file_chdir_exec(rootdir, buf, "post",
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pkgname, NULL)) != 0) {
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printf("%s: postrm action target error (%s)\n",
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pkgname, strerror(errno));
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free(buf);
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return rv;
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}
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}
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free(buf);
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/*
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* Update the requiredby array of all required dependencies.
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*/
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rv = xbps_requiredby_pkg_remove(pkgname);
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if (rv != 0)
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return rv;
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if (update == false) {
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/*
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* Unregister pkg from database only if it's a removal
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* and not an update.
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*/
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rv = xbps_unregister_pkg(pkgname);
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if (rv != 0)
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return rv;
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}
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/*
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* Remove pkg metadata directory.
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*/
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return xbps_remove_binary_pkg_meta(pkgname);
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}
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