package_script.c

/*-
 * Copyright (c) 2012 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 <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include "xbps_api_impl.h"

int
xbps_pkg_exec_buffer(struct xbps_handle *xhp,
                     const void *blob,
                     const size_t blobsiz,
                     const char *pkgname,
                     const char *version,
                     const char *action,
                     bool update)
{
        ssize_t ret;
        const char *tmpdir;
        char *fpath;
        int fd, rv;

        assert(blob);
        assert(pkgname);
        assert(version);
        assert(action);

        if (strcmp(xhp->rootdir, "/") == 0) {
                tmpdir = getenv("TMPDIR");
                if (tmpdir == NULL)
                        tmpdir = P_tmpdir;

                fpath = xbps_xasprintf("%s/.xbps-script-XXXXXX", tmpdir);
        } else {
                fpath = strdup(".xbps-script-XXXXXX");
        }

        /* change cwd to rootdir to exec the script */
        if (chdir(xhp->rootdir) == -1) {
                rv = errno;
                goto out;
        }

        /* Create temp file to run script */
        if ((fd = mkstemp(fpath)) == -1) {
                xbps_dbg_printf(xhp, "%s: mkstemp %s\n",
                    __func__, strerror(errno));
                free(fpath);
                return errno;
        }
        /* write blob to our temp fd */
        ret = write(fd, blob, blobsiz);
        if (ret == -1) {
                xbps_dbg_printf(xhp, "%s: write %s\n",
                    __func__, strerror(errno));
                close(fd);
                rv = errno;
                goto out;
        }
        fchmod(fd, 0750);
        fdatasync(fd);
        close(fd);

        /* exec script */
        rv = xbps_file_exec(xhp, fpath, action, pkgname, version,
                            update ? "yes" : "no",
                            xhp->conffile, NULL);

out:
        remove(fpath);
        free(fpath);
        return rv;
}

int
xbps_pkg_exec_script(struct xbps_handle *xhp,
                     prop_dictionary_t d,
                     const char *script,
                     const char *action,
                     bool update)
{
        prop_data_t data;
        const char *pkgname, *version;

        assert(xhp);
        assert(d);
        assert(script);
        assert(action);

        data = prop_dictionary_get(d, script);
        if (data == NULL)
                return 0;

        prop_dictionary_get_cstring_nocopy(d, "pkgname", &pkgname);
        prop_dictionary_get_cstring_nocopy(d, "version", &version);

        return xbps_pkg_exec_buffer(xhp, prop_data_data(data),
                        prop_data_size(data), pkgname, version,
                        action, update);
}