111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/*-
|
|
* Copyright (c) 2011 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 <assert.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
|
|
#include <xbps_api.h>
|
|
#include "defs.h"
|
|
|
|
/*
|
|
* Checks package integrity of an installed package.
|
|
* The following task is accomplished in this file:
|
|
*
|
|
* o Check for target file in symlinks, so that we can check that
|
|
* they have not been modified.
|
|
*
|
|
* returns 0 if test ran successfully, 1 otherwise and -1 on error.
|
|
*/
|
|
int
|
|
check_pkg_symlinks(prop_dictionary_t pkgd_regpkgdb,
|
|
prop_dictionary_t pkg_propsd,
|
|
prop_dictionary_t pkg_filesd)
|
|
{
|
|
const struct xbps_handle *xhp = xbps_handle_get();
|
|
prop_array_t array;
|
|
prop_object_t obj;
|
|
prop_object_iterator_t iter;
|
|
const char *pkgname, *file, *tgt = NULL;
|
|
char *path, buf[PATH_MAX];
|
|
bool test_broken = false;
|
|
|
|
(void)pkg_propsd;
|
|
prop_dictionary_get_cstring_nocopy(pkgd_regpkgdb, "pkgname", &pkgname);
|
|
|
|
array = prop_dictionary_get(pkg_filesd, "links");
|
|
if ((prop_object_type(array) == PROP_TYPE_ARRAY) &&
|
|
prop_array_count(array) > 0) {
|
|
iter = xbps_array_iter_from_dict(pkg_filesd, "links");
|
|
if (iter == NULL)
|
|
return -1;
|
|
|
|
while ((obj = prop_object_iterator_next(iter))) {
|
|
if (!prop_dictionary_get_cstring_nocopy(obj, "target", &tgt))
|
|
continue;
|
|
prop_dictionary_get_cstring_nocopy(obj, "file", &file);
|
|
if (strcmp(tgt, "") == 0) {
|
|
xbps_warn_printf("%s: `%s' symlink with "
|
|
"empty target object!\n", pkgname, file);
|
|
continue;
|
|
}
|
|
path = xbps_xasprintf("%s/%s",
|
|
prop_string_cstring_nocopy(xhp->rootdir), file);
|
|
if (path == NULL)
|
|
return -1;
|
|
|
|
memset(&buf, 0, sizeof(buf));
|
|
if (realpath(path, buf) == NULL) {
|
|
xbps_error_printf("%s: broken symlink `%s': "
|
|
"%s\n", pkgname, file, strerror(errno));
|
|
test_broken = true;
|
|
continue;
|
|
}
|
|
|
|
free(path);
|
|
if (!prop_string_equals_cstring(xhp->rootdir, "/") &&
|
|
strstr(buf, prop_string_cstring_nocopy(xhp->rootdir)))
|
|
path = buf + prop_string_size(xhp->rootdir);
|
|
else
|
|
path = buf;
|
|
|
|
if (strcmp(path, tgt)) {
|
|
xbps_error_printf("%s: modified symlink `%s', "
|
|
"target: `%s' (shall be: `%s')\n",
|
|
pkgname, file, tgt, path);
|
|
test_broken = true;
|
|
}
|
|
path = NULL;
|
|
}
|
|
prop_object_iterator_release(iter);
|
|
}
|
|
return test_broken;
|
|
}
|