379 lines
11 KiB
C
379 lines
11 KiB
C
/*-
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* Copyright (c) 2009-2011 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 <sys/param.h>
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#include <xbps_api.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 tasks are processed in that order:
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*
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* o Check if package was installed manually, but currently
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* other packages are depending on it. This package shall be
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* changed to automatic mode, i.e installed as dependency of
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* those packages.
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*
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* o Check for metadata files (files.plist and props.plist),
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* we only check if the file exists and its dictionary can
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* be externalized and is not empty.
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*
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* o Check for missing installed files.
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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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* o Check the hash for all installed files, except
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* configuration files (which is expected if they are modified).
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*
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* o Check for missing run time dependencies.
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*
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*/
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int
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check_pkg_integrity_all(void)
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{
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const struct xbps_handle *xhp;
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prop_object_t obj;
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prop_object_iterator_t iter = NULL;
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const char *pkgname, *version;
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size_t npkgs = 0, nbrokenpkgs = 0;
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xhp = xbps_handle_get();
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iter = xbps_array_iter_from_dict(xhp->regpkgdb_dictionary, "packages");
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if (iter == NULL)
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return -1;
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while ((obj = prop_object_iterator_next(iter)) != NULL) {
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prop_dictionary_get_cstring_nocopy(obj, "pkgname", &pkgname);
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prop_dictionary_get_cstring_nocopy(obj, "version", &version);
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printf("Checking %s-%s ...\n", pkgname, version);
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if (check_pkg_integrity(pkgname) != 0)
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nbrokenpkgs++;
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npkgs++;
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}
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prop_object_iterator_release(iter);
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printf("%zu package%s processed: %zu broken.\n", npkgs,
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npkgs == 1 ? "" : "s", nbrokenpkgs);
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return 0;
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}
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int
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check_pkg_integrity(const char *pkgname)
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{
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struct xbps_handle *xhp;
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prop_dictionary_t pkgd, dict, propsd = NULL, filesd = NULL;
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prop_array_t array, reqby;
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prop_object_t obj;
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prop_object_iterator_t iter;
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const char *file, *sha256, *reqpkg, *tgt = NULL;
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char *path, buf[PATH_MAX];
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int rv = 0;
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bool broken = false, test_broken = false, autoinst = false;
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assert(pkgname != NULL);
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xhp = xbps_handle_get();
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pkgd = xbps_find_pkg_dict_installed(pkgname, false);
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if (pkgd == NULL) {
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printf("Package %s is not installed.\n", pkgname);
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return 0;
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}
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/*
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* Check if package has been installed manually but any other
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* package is currently depending on it; in that case the package
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* must be in automatic mode.
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*/
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if (prop_dictionary_get_bool(pkgd, "automatic-install", &autoinst)) {
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reqby = prop_dictionary_get(pkgd, "requiredby");
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if (((prop_object_type(reqby) == PROP_TYPE_ARRAY)) &&
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((prop_array_count(reqby) > 0) && !autoinst)) {
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path = xbps_xasprintf("%s/%s/%s",
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prop_string_cstring_nocopy(xhp->rootdir),
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XBPS_META_PATH, XBPS_REGPKGDB);
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assert(path != NULL);
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/* pkg has reversedeps and was installed manually */
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prop_dictionary_set_bool(pkgd,
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"automatic-install", true);
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dict = prop_dictionary_internalize_from_zfile(path);
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if (dict == NULL) {
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xbps_error_printf("%s: [0] failed to set "
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"automatic mode (%s)\n", pkgname, strerror(errno));
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return rv;
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}
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array = prop_dictionary_get(dict, "packages");
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rv = xbps_array_replace_dict_by_name(array, pkgd, pkgname);
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if (rv != 0) {
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xbps_error_printf("%s: [1] failed to set "
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"automatic mode (%s)\n", pkgname, strerror(rv));
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return rv;
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}
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if (!prop_dictionary_set(dict, "packages", array)) {
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xbps_error_printf("%s: [2] failed to set "
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"automatic mode (%s)\n", pkgname, strerror(rv));
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return rv;
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}
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if (!prop_dictionary_externalize_to_zfile(dict, path)) {
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xbps_error_printf("%s: [3] failed to set "
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"automatic mode (%s)\n", pkgname, strerror(errno));
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return rv;
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}
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free(path);
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path = NULL;
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xbps_warn_printf("%s: was installed manually and has "
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"reverse dependencies (FIXED)\n", pkgname);
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}
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}
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prop_object_release(pkgd);
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/*
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* Check for props.plist metadata file.
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*/
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propsd = xbps_dictionary_from_metadata_plist(pkgname, XBPS_PKGPROPS);
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if (prop_object_type(propsd) != PROP_TYPE_DICTIONARY) {
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xbps_error_printf("%s: unexistent %s or invalid metadata "
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"file.\n", pkgname, XBPS_PKGPROPS);
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broken = true;
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goto out;
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} else if (prop_dictionary_count(propsd) == 0) {
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xbps_error_printf("%s: incomplete %s metadata file.\n",
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pkgname, XBPS_PKGPROPS);
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broken = true;
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goto out;
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}
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/*
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* Check for files.plist metadata file.
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*/
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filesd = xbps_dictionary_from_metadata_plist(pkgname, XBPS_PKGFILES);
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if (prop_object_type(filesd) != PROP_TYPE_DICTIONARY) {
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xbps_error_printf("%s: unexistent %s or invalid metadata "
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"file.\n", pkgname, XBPS_PKGFILES);
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broken = true;
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goto out;
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} else if (prop_dictionary_count(filesd) == 0) {
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xbps_error_printf("%s: incomplete %s metadata file.\n",
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pkgname, XBPS_PKGFILES);
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broken = true;
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goto out;
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}
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/*
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* Check for target files in symlinks.
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*/
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array = prop_dictionary_get(filesd, "links");
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if ((prop_object_type(array) == PROP_TYPE_ARRAY) &&
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prop_array_count(array) > 0) {
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iter = xbps_array_iter_from_dict(filesd, "links");
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if (iter == NULL)
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abort();
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while ((obj = prop_object_iterator_next(iter))) {
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if (!prop_dictionary_get_cstring_nocopy(obj, "target", &tgt))
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continue;
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prop_dictionary_get_cstring_nocopy(obj, "file", &file);
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if (strcmp(tgt, "") == 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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path = xbps_xasprintf("%s/%s",
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prop_string_cstring_nocopy(xhp->rootdir), file);
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if (path == NULL)
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abort();
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memset(&buf, 0, sizeof(buf));
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if (realpath(path, buf) == NULL) {
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xbps_error_printf("%s: broken symlink `%s': "
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"%s\n", pkgname, file, strerror(errno));
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test_broken = true;
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continue;
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}
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free(path);
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if (!prop_string_equals_cstring(xhp->rootdir, "/") &&
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strstr(buf, prop_string_cstring_nocopy(xhp->rootdir)))
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path = buf + prop_string_size(xhp->rootdir);
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else
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path = buf;
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if (strcmp(path, tgt)) {
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xbps_error_printf("%s: modified symlink `%s', "
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"target: `%s' (shall be: `%s')\n",
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pkgname, file, tgt, path);
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test_broken = true;
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}
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path = NULL;
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}
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prop_object_iterator_release(iter);
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}
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if (test_broken) {
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test_broken = false;
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xbps_error_printf("%s: links check FAILED.\n", pkgname);
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broken = true;
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}
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/*
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* Check for missing files and its hash.
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*/
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array = prop_dictionary_get(filesd, "files");
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if ((prop_object_type(array) == PROP_TYPE_ARRAY) &&
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prop_array_count(array) > 0) {
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iter = xbps_array_iter_from_dict(filesd, "files");
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if (iter == NULL)
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abort();
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while ((obj = prop_object_iterator_next(iter))) {
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prop_dictionary_get_cstring_nocopy(obj, "file", &file);
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path = xbps_xasprintf("%s/%s",
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prop_string_cstring_nocopy(xhp->rootdir), file);
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if (path == NULL) {
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prop_object_iterator_release(iter);
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abort();
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}
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prop_dictionary_get_cstring_nocopy(obj,
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"sha256", &sha256);
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rv = xbps_file_hash_check(path, sha256);
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switch (rv) {
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case 0:
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break;
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case ENOENT:
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xbps_error_printf("%s: unexistent file %s.\n",
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pkgname, file);
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test_broken = true;
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break;
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case ERANGE:
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xbps_error_printf("%s: hash mismatch for %s.\n",
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pkgname, file);
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test_broken = true;
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break;
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default:
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xbps_error_printf(
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"%s: can't check `%s' (%s)\n",
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pkgname, file, strerror(rv));
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break;
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}
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free(path);
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}
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prop_object_iterator_release(iter);
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}
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if (test_broken) {
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test_broken = false;
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broken = true;
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xbps_error_printf("%s: files check FAILED.\n", pkgname);
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}
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/*
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* Check for missing configuration files.
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*/
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array = prop_dictionary_get(filesd, "conf_files");
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if (array && prop_object_type(array) == PROP_TYPE_ARRAY &&
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prop_array_count(array) > 0) {
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iter = xbps_array_iter_from_dict(filesd, "conf_files");
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if (iter == NULL)
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abort();
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while ((obj = prop_object_iterator_next(iter))) {
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prop_dictionary_get_cstring_nocopy(obj, "file", &file);
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path = xbps_xasprintf("%s/%s",
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prop_string_cstring_nocopy(xhp->rootdir), file);
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if (path == NULL) {
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prop_object_iterator_release(iter);
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abort();
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}
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if ((rv = access(path, R_OK)) == -1) {
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if (errno == ENOENT) {
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xbps_error_printf(
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"%s: unexistent file %s\n",
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pkgname, file);
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test_broken = true;
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} else
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xbps_error_printf(
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"%s: can't check `%s' (%s)\n",
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pkgname, file,
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strerror(errno));
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}
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free(path);
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}
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prop_object_iterator_release(iter);
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}
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if (test_broken) {
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test_broken = false;
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xbps_error_printf("%s: conf files check FAILED.\n", pkgname);
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broken = true;
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}
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/*
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* Check for missing run time dependencies.
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*/
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if (!xbps_pkg_has_rundeps(propsd))
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goto out;
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iter = xbps_array_iter_from_dict(propsd, "run_depends");
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if (iter == NULL)
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abort();
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while ((obj = prop_object_iterator_next(iter))) {
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reqpkg = prop_string_cstring_nocopy(obj);
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if (reqpkg == NULL) {
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prop_object_iterator_release(iter);
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abort();
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}
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if (xbps_check_is_installed_pkg_by_pattern(reqpkg) <= 0) {
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xbps_error_printf("%s: dependency not satisfied: %s\n",
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pkgname, reqpkg);
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test_broken = true;
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}
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}
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prop_object_iterator_release(iter);
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if (test_broken) {
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xbps_error_printf("%s: rundeps check FAILED.\n", pkgname);
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broken = true;
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}
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out:
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if (filesd)
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prop_object_release(filesd);
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if (propsd)
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prop_object_release(propsd);
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if (broken)
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return -1;
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return 0;
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}
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