171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
/*
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* alpm.c
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*
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* Copyright (c) 2006-2016 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
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* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
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* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_LIBCURL
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#include <curl/curl.h>
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#endif
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/* libalpm */
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#include "alpm.h"
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#include "alpm_list.h"
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#include "handle.h"
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#include "log.h"
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#include "util.h"
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/** \addtogroup alpm_interface Interface Functions
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* @brief Functions to initialize and release libalpm
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* @{
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*/
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/** Initializes the library.
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* Creates handle, connects to database and creates lockfile.
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* This must be called before any other functions are called.
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* @param root the root path for all filesystem operations
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* @param dbpath the absolute path to the libalpm database
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* @param err an optional variable to hold any error return codes
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* @return a context handle on success, NULL on error, err will be set if provided
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*/
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alpm_handle_t SYMEXPORT *alpm_initialize(const char *root, const char *dbpath,
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alpm_errno_t *err)
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{
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alpm_errno_t myerr;
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const char *lf = "db.lck";
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char *hookdir;
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size_t lockfilelen;
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alpm_handle_t *myhandle = _alpm_handle_new();
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if(myhandle == NULL) {
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goto nomem;
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}
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if((myerr = _alpm_set_directory_option(root, &(myhandle->root), 1))) {
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goto cleanup;
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}
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if((myerr = _alpm_set_directory_option(dbpath, &(myhandle->dbpath), 1))) {
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goto cleanup;
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}
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/* to contatenate myhandle->root (ends with a slash) with SYSHOOKDIR (starts
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* with a slash) correctly, we skip SYSHOOKDIR[0]; the regular +1 therefore
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* disappears from the allocation */
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MALLOC(hookdir, strlen(myhandle->root) + strlen(SYSHOOKDIR), goto nomem);
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sprintf(hookdir, "%s%s", myhandle->root, SYSHOOKDIR + 1);
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myhandle->hookdirs = alpm_list_add(NULL, hookdir);
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/* set default database extension */
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STRDUP(myhandle->dbext, ".db", goto nomem);
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lockfilelen = strlen(myhandle->dbpath) + strlen(lf) + 1;
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MALLOC(myhandle->lockfile, lockfilelen, goto nomem);
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snprintf(myhandle->lockfile, lockfilelen, "%s%s", myhandle->dbpath, lf);
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if(_alpm_db_register_local(myhandle) == NULL) {
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myerr = myhandle->pm_errno;
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goto cleanup;
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}
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#ifdef ENABLE_NLS
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bindtextdomain("libalpm", LOCALEDIR);
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#endif
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return myhandle;
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nomem:
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myerr = ALPM_ERR_MEMORY;
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cleanup:
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_alpm_handle_free(myhandle);
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if(err) {
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*err = myerr;
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}
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return NULL;
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}
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/** Release the library.
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* Disconnects from the database, removes handle and lockfile
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* This should be the last alpm call you make.
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* After this returns, handle should be considered invalid and cannot be reused
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* in any way.
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* @param myhandle the context handle
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* @return 0 on success, -1 on error
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*/
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int SYMEXPORT alpm_release(alpm_handle_t *myhandle)
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{
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int ret = 0;
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alpm_db_t *db;
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CHECK_HANDLE(myhandle, return -1);
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/* close local database */
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db = myhandle->db_local;
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if(db) {
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db->ops->unregister(db);
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myhandle->db_local = NULL;
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}
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if(alpm_unregister_all_syncdbs(myhandle) == -1) {
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ret = -1;
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}
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_alpm_handle_unlock(myhandle);
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_alpm_handle_free(myhandle);
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#ifdef HAVE_LIBCURL
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curl_global_cleanup();
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#endif
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return ret;
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}
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/** @} */
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/** @defgroup alpm_misc Miscellaneous Functions
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* @brief Various libalpm functions
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*/
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/** Get the version of library.
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* @return the library version, e.g. "6.0.4"
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* */
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const char SYMEXPORT *alpm_version(void)
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{
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return LIB_VERSION;
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}
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/** Get the capabilities of the library.
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* @return a bitmask of the capabilities
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* */
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int SYMEXPORT alpm_capabilities(void)
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{
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return 0
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#ifdef ENABLE_NLS
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| ALPM_CAPABILITY_NLS
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#endif
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#ifdef HAVE_LIBCURL
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| ALPM_CAPABILITY_DOWNLOADER
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#endif
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#ifdef HAVE_LIBGPGME
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| ALPM_CAPABILITY_SIGNATURES
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#endif
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| 0;
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}
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/* vim: set noet: */
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