xbps/lib/package_script.c

171 lines
4.2 KiB
C

/*-
* Copyright (c) 2012-2015 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"
const char *shells[] = {
"/bin/sh",
"/bin/dash",
"/bin/bash",
NULL
};
int
xbps_pkg_exec_buffer(struct xbps_handle *xhp,
const void *blob,
const size_t blobsiz,
const char *pkgver,
const char *action,
bool update)
{
int i;
ssize_t ret;
const char *tmpdir, *version;
char *pkgname, *fpath;
int fd, rv;
assert(blob);
assert(pkgver);
assert(action);
if (xhp->target_arch) {
xbps_dbg_printf(xhp, "%s: not executing %s "
"install/remove action.\n", pkgver, action);
return 0;
}
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) {
rv = errno;
xbps_dbg_printf(xhp, "%s: mkstemp %s\n",
__func__, strerror(errno));
goto out;
}
/* write blob to our temp fd */
ret = write(fd, blob, blobsiz);
if (ret == -1) {
rv = errno;
xbps_dbg_printf(xhp, "%s: write %s\n",
__func__, strerror(errno));
close(fd);
goto out;
}
fchmod(fd, 0750);
#ifdef HAVE_FDATASYNC
fdatasync(fd);
#else
fsync(fd);
#endif
close(fd);
/* exec script */
pkgname = xbps_pkg_name(pkgver);
assert(pkgname);
version = xbps_pkg_version(pkgver);
assert(version);
// find a shell that can be used to execute the script.
for (i = 0; shells[i] != NULL; i++) {
if (access(shells[i], X_OK) == 0) {
break;
}
}
if (shells[i] != NULL) {
rv = xbps_file_exec(xhp, shells[i], fpath, action, pkgname, version,
update ? "yes" : "no",
"no", xhp->native_arch, NULL);
} else if (access("/bin/busybox", X_OK) == 0) {
rv = xbps_file_exec(xhp, "/bin/busybox", "sh", fpath, action, pkgname, version,
update ? "yes" : "no",
"no", xhp->native_arch, NULL);
} else if (access("/bin/busybox.static", X_OK) == 0) {
rv = xbps_file_exec(xhp, "/bin/busybox.static", "sh", fpath, action, pkgname, version,
update ? "yes" : "no",
"no", xhp->native_arch, NULL);
} else {
rv = -1;
}
free(pkgname);
out:
remove(fpath);
free(fpath);
return rv;
}
int
xbps_pkg_exec_script(struct xbps_handle *xhp,
xbps_dictionary_t d,
const char *script,
const char *action,
bool update)
{
xbps_data_t data;
void *buf;
size_t buflen;
const char *pkgver = NULL;
int rv;
assert(xhp);
assert(d);
assert(script);
assert(action);
data = xbps_dictionary_get(d, script);
if (data == NULL)
return 0;
xbps_dictionary_get_cstring_nocopy(d, "pkgver", &pkgver);
buf = xbps_data_data(data);
buflen = xbps_data_size(data);
rv = xbps_pkg_exec_buffer(xhp, buf, buflen, pkgver, action, update);
free(buf);
return rv;
}