99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
/*-
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* Copyright (c) 2011-2015 Juan Romero Pardines.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <sys/param.h>
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#include <xbps.h>
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#include "defs.h"
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/*
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* Checks package integrity of an installed package.
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* The following task is accomplished in this file:
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*
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* o Check for target file in symlinks, so that we can check that
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* they have not been modified.
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*
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* returns 0 if test ran successfully, 1 otherwise and -1 on error.
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*/
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int
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check_pkg_symlinks(struct xbps_handle *xhp, const char *pkgname, void *arg)
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{
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xbps_array_t array;
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xbps_object_t obj;
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xbps_dictionary_t filesd = arg;
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int rv = 0;
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array = xbps_dictionary_get(filesd, "links");
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if (array == NULL)
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return 0;
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for (unsigned int i = 0; i < xbps_array_count(array); i++) {
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const char *file = NULL, *tgt = NULL;
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char path[PATH_MAX], *lnk = NULL;
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obj = xbps_array_get(array, i);
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if (!xbps_dictionary_get_cstring_nocopy(obj, "file", &file))
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continue;
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/* skip noextract files */
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if (xhp->noextract && xbps_patterns_match(xhp->noextract, file))
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continue;
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if (!xbps_dictionary_get_cstring_nocopy(obj, "target", &tgt)) {
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xbps_warn_printf("%s: `%s' symlink with "
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"empty target object!\n", pkgname, file);
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continue;
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}
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if (tgt[0] == '\0') {
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xbps_warn_printf("%s: `%s' symlink with "
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"empty target object!\n", pkgname, file);
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continue;
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}
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snprintf(path, sizeof(path), "%s/%s", xhp->rootdir, file);
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if ((lnk = xbps_symlink_target(xhp, path, tgt)) == NULL) {
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xbps_error_printf("%s: broken symlink %s (target: %s)\n", pkgname, file, tgt);
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rv = -1;
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continue;
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}
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if (strcmp(lnk, tgt)) {
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xbps_warn_printf("%s: modified symlink %s "
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"points to %s (shall be %s)\n",
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pkgname, file, lnk, tgt);
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rv = -1;
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}
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free(lnk);
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}
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return rv;
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}
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