238 lines
5.7 KiB
C
238 lines
5.7 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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int
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xbps_unregister_pkg(const char *pkgname)
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{
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char *plist;
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int rv = 0;
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assert(pkgname != NULL);
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plist = xbps_append_full_path(true, NULL, XBPS_REGPKGDB);
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if (plist == NULL)
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return EINVAL;
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if (!xbps_remove_pkg_dict_from_file(pkgname, plist))
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rv = errno;
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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, const char *destdir, int flags)
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{
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struct dirent *dp;
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DIR *dirp;
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char metadir[PATH_MAX - 1], path[PATH_MAX - 1];
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int rv = 0;
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assert(pkgname != NULL);
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if (destdir == NULL)
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destdir = "";
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(void)snprintf(metadir, sizeof(metadir), "%s%s/metadata/%s",
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destdir, XBPS_META_PATH, pkgname);
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dirp = opendir(metadir);
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if (dirp == NULL)
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return errno;
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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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if (snprintf(path, sizeof(path), "%s%s/metadata/%s/%s",
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destdir, XBPS_META_PATH, pkgname, dp->d_name) < 0) {
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(void)closedir(dirp);
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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_UNPACK_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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(void)memset(&path, 0, sizeof(path));
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}
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(void)closedir(dirp);
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rv = rmdir(metadir);
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return rv;
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}
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int
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xbps_remove_binary_pkg(const char *pkgname, const char *destdir, int flags)
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{
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FILE *flist;
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char path[PATH_MAX - 1], line[LINE_MAX - 1], *p, *buf;
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int fd, rv = 0;
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size_t len = 0;
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bool prepostf = false;
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assert(pkgname != NULL);
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if (destdir == NULL)
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destdir = "";
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/* Check if pkg is installed */
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if (xbps_check_is_installed_pkgname(pkgname) == false)
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return ENOENT;
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/*
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* This length is '%s%s/metadata/%s/prepost-rm' not
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* including nul.
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*/
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len = strlen(XBPS_META_PATH) + strlen(destdir) + strlen(pkgname) + 22;
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buf = malloc(len + 1);
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if (buf == NULL)
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return errno;
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if (snprintf(buf, len + 1, "%s%s/metadata/%s/prepost-rm",
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destdir, XBPS_META_PATH, pkgname) < 0) {
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free(buf);
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return -1;
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}
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/* Find out if the prepost-rm file exists */
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if ((fd = open(buf, O_RDONLY)) == -1) {
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if (errno != ENOENT) {
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rv = errno;
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goto out;
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}
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} else {
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/* Run the preremove action */
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(void)close(fd);
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prepostf = true;
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if ((rv = xbps_file_exec(buf, destdir, "pre", pkgname,
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NULL)) != 0) {
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printf("%s: prerm action target error (%s)\n", pkgname,
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strerror(errno));
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goto out;
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}
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}
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(void)snprintf(path, sizeof(path), "%s%s/metadata/%s/flist",
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destdir, XBPS_META_PATH, pkgname);
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if ((flist = fopen(path, "r")) == NULL) {
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rv = errno;
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goto out;
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}
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while (!feof(flist)) {
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p = fgets(line, sizeof(line), flist);
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if (p == NULL) {
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if (feof(flist))
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break;
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if (ferror(flist)) {
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rv = errno;
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break;
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}
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}
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if (strlen(line) == 0 || line[0] == '#' ||
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isspace((unsigned char)line[0]) != 0)
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continue;
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len = strlen(line) + 1;
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p = calloc(1, len);
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if (p == NULL) {
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rv = errno;
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break;
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}
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(void)strncpy(p, line, len - 2);
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(void)snprintf(path, sizeof(path), "%s%s",
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destdir, p);
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/*
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* Remove the file or the directory if it's empty.
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*/
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if ((rv = unlink(path)) == -1) {
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if (errno == EISDIR) {
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if ((rv = rmdir(path)) == -1) {
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if (errno == ENOTEMPTY) {
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rv = 0;
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goto next;
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}
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if (flags & XBPS_UNPACK_VERBOSE)
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printf("WARNING: can't remove "
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"directory %s (%s)\n",
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path, strerror(errno));
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goto next;
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}
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if (flags & XBPS_UNPACK_VERBOSE)
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printf("Removed directory: %s\n", path);
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goto next;
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}
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if (flags & XBPS_UNPACK_VERBOSE)
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printf("WARNING: can't remove file %s (%s)\n", path,
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strerror(errno));
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goto next;
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}
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if (flags & XBPS_UNPACK_VERBOSE)
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printf("Removed file: %s\n", path);
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next:
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free(p);
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p = NULL;
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}
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(void)fclose(flist);
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/* If successful, unregister pkg from db */
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if (rv == 0) {
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if (((rv = xbps_unregister_pkg(pkgname)) == 0) && prepostf) {
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/* Run the postremove action target */
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if ((rv = xbps_file_exec(buf, destdir, "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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}
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}
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}
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out:
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free(buf);
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rv = xbps_remove_binary_pkg_meta(pkgname, destdir, flags);
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return rv;
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}
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