src/util/testpkg.c


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/*
 *  testpkg.c : Test a pacman package for validity
 *
 *  Copyright (c) 2007-2017 Pacman Development Team <pacman-dev@archlinux.org>
 *  Copyright (c) 2007 by Aaron Griffin <aaronmgriffin@gmail.com>
 *
 *  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/>.
 */

#include <stdio.h> /* printf */
#include <stdarg.h> /* va_list */

#include <alpm.h>

__attribute__((format(printf, 2, 0)))
static void output_cb(alpm_loglevel_t level, const char *fmt, va_list args)
{
        if(fmt[0] == '\0') {
                return;
        }
        switch(level) {
                case ALPM_LOG_ERROR: printf("error: "); break;
                case ALPM_LOG_WARNING: printf("warning: "); break;
                default: return; /* skip other messages */
        }
        vprintf(fmt, args);
}

int main(int argc, char *argv[])
{
        int retval = 1; /* default = false */
        alpm_handle_t *handle;
        alpm_errno_t err;
        alpm_pkg_t *pkg = NULL;
        const int siglevel = ALPM_SIG_PACKAGE | ALPM_SIG_PACKAGE_OPTIONAL;

        if(argc != 2) {
                fprintf(stderr, "testpkg (pacman) v" PACKAGE_VERSION "\n\n"
                        "Test a pacman package for validity.\n\n"
                        "Usage: testpkg <package file>\n");
                return 1;
        }

        handle = alpm_initialize(ROOTDIR, DBPATH, &err);
        if(!handle) {
                fprintf(stderr, "cannot initialize alpm: %s\n", alpm_strerror(err));
                return 1;
        }

        /* let us get log messages from libalpm */
        alpm_option_set_logcb(handle, output_cb);

        /* set gpgdir to default */
        alpm_option_set_gpgdir(handle, GPGDIR);

        if(alpm_pkg_load(handle, argv[1], 1, siglevel, &pkg) == -1
                        || pkg == NULL) {
                err = alpm_errno(handle);
                switch(err) {
                        case ALPM_ERR_PKG_NOT_FOUND:
                                printf("Cannot find the given file.\n");
                                break;
                        case ALPM_ERR_PKG_OPEN:
                                printf("Cannot open the given file.\n");
                                break;
                        case ALPM_ERR_LIBARCHIVE:
                        case ALPM_ERR_PKG_INVALID:
                                printf("Package is invalid.\n");
                                break;
                        default:
                                printf("libalpm error: %s\n", alpm_strerror(err));
                                break;
                }
                retval = 1;
        } else {
                alpm_pkg_free(pkg);
                printf("Package is valid.\n");
                retval = 0;
        }

        if(alpm_release(handle) == -1) {
                fprintf(stderr, "error releasing alpm\n");
        }

        return retval;
}