/* * alpm.c * * Copyright (c) 2006-2017 Pacman Development Team <pacman-dev@archlinux.org> * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> * Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu> * Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifdef HAVE_LIBCURL #include <curl/curl.h> #endif /* libalpm */ #include "alpm.h" #include "alpm_list.h" #include "handle.h" #include "log.h" #include "util.h" /** \addtogroup alpm_interface Interface Functions * @brief Functions to initialize and release libalpm * @{ */ /** Initializes the library. * Creates handle, connects to database and creates lockfile. * This must be called before any other functions are called. * @param root the root path for all filesystem operations * @param dbpath the absolute path to the libalpm database * @param err an optional variable to hold any error return codes * @return a context handle on success, NULL on error, err will be set if provided */ alpm_handle_t SYMEXPORT *alpm_initialize(const char *root, const char *dbpath, alpm_errno_t *err) { alpm_errno_t myerr; const char *lf = "db.lck"; char *hookdir; size_t lockfilelen; alpm_handle_t *myhandle = _alpm_handle_new(); if(myhandle == NULL) { goto nomem; } if((myerr = _alpm_set_directory_option(root, &(myhandle->root), 1))) { goto cleanup; } if((myerr = _alpm_set_directory_option(dbpath, &(myhandle->dbpath), 1))) { goto cleanup; } /* to contatenate myhandle->root (ends with a slash) with SYSHOOKDIR (starts * with a slash) correctly, we skip SYSHOOKDIR[0]; the regular +1 therefore * disappears from the allocation */ MALLOC(hookdir, strlen(myhandle->root) + strlen(SYSHOOKDIR), goto nomem); sprintf(hookdir, "%s%s", myhandle->root, SYSHOOKDIR + 1); myhandle->hookdirs = alpm_list_add(NULL, hookdir); /* set default database extension */ STRDUP(myhandle->dbext, ".db", goto nomem); lockfilelen = strlen(myhandle->dbpath) + strlen(lf) + 1; MALLOC(myhandle->lockfile, lockfilelen, goto nomem); snprintf(myhandle->lockfile, lockfilelen, "%s%s", myhandle->dbpath, lf); if(_alpm_db_register_local(myhandle) == NULL) { myerr = myhandle->pm_errno; goto cleanup; } #ifdef ENABLE_NLS bindtextdomain("libalpm", LOCALEDIR); #endif return myhandle; nomem: myerr = ALPM_ERR_MEMORY; cleanup: _alpm_handle_free(myhandle); if(err) { *err = myerr; } return NULL; } /** Release the library. * Disconnects from the database, removes handle and lockfile * This should be the last alpm call you make. * After this returns, handle should be considered invalid and cannot be reused * in any way. * @param myhandle the context handle * @return 0 on success, -1 on error */ int SYMEXPORT alpm_release(alpm_handle_t *myhandle) { int ret = 0; alpm_db_t *db; CHECK_HANDLE(myhandle, return -1); /* close local database */ db = myhandle->db_local; if(db) { db->ops->unregister(db); myhandle->db_local = NULL; } if(alpm_unregister_all_syncdbs(myhandle) == -1) { ret = -1; } _alpm_handle_unlock(myhandle); _alpm_handle_free(myhandle); #ifdef HAVE_LIBCURL curl_global_cleanup(); #endif return ret; } /** @} */ /** @defgroup alpm_misc Miscellaneous Functions * @brief Various libalpm functions */ /** Get the version of library. * @return the library version, e.g. "6.0.4" * */ const char SYMEXPORT *alpm_version(void) { return LIB_VERSION; } /** Get the capabilities of the library. * @return a bitmask of the capabilities * */ int SYMEXPORT alpm_capabilities(void) { return 0 #ifdef ENABLE_NLS | ALPM_CAPABILITY_NLS #endif #ifdef HAVE_LIBCURL | ALPM_CAPABILITY_DOWNLOADER #endif #ifdef HAVE_LIBGPGME | ALPM_CAPABILITY_SIGNATURES #endif | 0; } /* vim: set noet: */