xbps/lib/package_purge.c

199 lines
4.9 KiB
C
Raw Normal View History

/*-
* Copyright (c) 2009-2010 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <dirent.h>
#include <xbps_api.h>
#include "xbps_api_impl.h"
/**
* @file lib/package_purge.c
* @brief Package purging routines
* @defgroup purge Package purging functions
*
* These functions will purge an specified package or all packages.
* Only packages in XBPS_PKG_STATE_CONFIG_FILES state will be processed
* (unless overriden). Package purging steps:
*
* - Unmodified configuration files and directories containing them
* will be removed (if empty).
* - Its metadata directory and all its files will be removed.
* - It will be unregistered from the installed packages database with
* xbps_unregister_pkg().
*/
static int
remove_pkg_metadata(const char *pkgname)
{
struct dirent *dp;
DIR *dirp;
char *metadir, *path;
int rv = 0, flags = xbps_get_flags();
assert(pkgname != NULL);
metadir = xbps_xasprintf("%s/%s/metadata/%s", xbps_get_rootdir(),
XBPS_META_PATH, pkgname);
if (metadir == NULL)
return ENOMEM;
dirp = opendir(metadir);
if (dirp == NULL) {
free(metadir);
return errno;
}
while ((dp = readdir(dirp)) != NULL) {
if ((strcmp(dp->d_name, ".") == 0) ||
(strcmp(dp->d_name, "..") == 0))
continue;
path = xbps_xasprintf("%s/%s", metadir, dp->d_name);
if (path == NULL) {
(void)closedir(dirp);
free(metadir);
return ENOMEM;
}
if (unlink(path) == -1) {
if (flags & XBPS_FLAG_VERBOSE)
printf("WARNING: can't remove %s (%s)\n",
pkgname, strerror(errno));
}
free(path);
}
(void)closedir(dirp);
rv = rmdir(metadir);
free(metadir);
return rv;
}
int
xbps_purge_all_pkgs(void)
{
prop_dictionary_t d;
prop_object_t obj;
prop_object_iterator_t iter;
const char *pkgname;
int rv = 0;
if ((d = xbps_regpkgdb_dictionary_get()) == NULL)
return errno;
iter = xbps_get_array_iter_from_dict(d, "packages");
if (iter == NULL) {
rv = errno;
goto out;
}
while ((obj = prop_object_iterator_next(iter)) != NULL) {
prop_dictionary_get_cstring_nocopy(obj, "pkgname", &pkgname);
if ((rv = xbps_purge_pkg(pkgname, true)) != 0)
break;
}
prop_object_iterator_release(iter);
out:
xbps_regpkgdb_dictionary_release();
return rv;
}
int
xbps_purge_pkg(const char *pkgname, bool check_state)
{
prop_dictionary_t dict, pkgd;
int rv = 0, flags = xbps_get_flags();
pkg_state_t state = 0;
assert(pkgname != NULL);
/*
* Firstly let's get the pkg dictionary from regpkgdb.
*/
if ((dict = xbps_regpkgdb_dictionary_get()) == NULL)
return errno;
pkgd = xbps_find_pkg_in_dict_by_name(dict, "packages", pkgname);
if (pkgd == NULL) {
rv = errno;
goto out;
}
if (check_state) {
/*
* Skip packages that aren't in "config-files" state.
*/
if ((rv = xbps_get_pkg_state_dictionary(pkgd, &state)) != 0)
goto out;
if (state != XBPS_PKG_STATE_CONFIG_FILES)
goto out;
}
/*
* Remove unmodified configuration files and directories.
*/
dict = xbps_get_pkg_dict_from_metadata_plist(pkgname, XBPS_PKGFILES);
if (dict == NULL) {
rv = errno;
goto out;
}
if (prop_dictionary_get(dict, "conf_files")) {
if ((rv = xbps_remove_pkg_files(dict, "conf_files")) != 0) {
prop_object_release(dict);
goto out;
}
if ((rv = xbps_remove_pkg_files(dict, "dirs")) != 0) {
prop_object_release(dict);
goto out;
}
}
prop_object_release(dict);
/*
* Remove metadata dir and unregister package.
*/
if ((rv = remove_pkg_metadata(pkgname)) != 0)
goto out;
if ((rv = xbps_unregister_pkg(pkgname)) != 0)
goto out;
if (flags & XBPS_FLAG_VERBOSE)
printf("Package %s purged successfully.\n", pkgname);
out:
xbps_regpkgdb_dictionary_release();
return rv;
}