276 lines
7.6 KiB
C
276 lines
7.6 KiB
C
/*-
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* Copyright (c) 2009 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 <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. This
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* consists in four tasks:
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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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* o Check for missing installed files.
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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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* o Check for missing run time dependencies.
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*
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* If any of these checks fail, the package will change its
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* state to 'broken'.
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*/
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int
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xbps_check_pkg_integrity(const char *pkgname)
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{
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prop_dictionary_t pkgd, propsd, filesd;
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prop_array_t array;
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prop_object_t obj;
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prop_object_iterator_t iter;
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const char *rootdir, *file, *sha256, *reqpkg;
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char *path;
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int rv = 0;
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bool files_broken = false, broken = false;
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assert(pkgname != NULL);
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rootdir = xbps_get_rootdir();
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pkgd = xbps_find_pkg_installed_from_plist(pkgname);
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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 for props.plist metadata file.
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*/
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path = xbps_xasprintf("%s/%s/metadata/%s/%s", rootdir,
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XBPS_META_PATH, pkgname, XBPS_PKGPROPS);
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if (path == NULL) {
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rv = errno;
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goto out;
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}
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propsd = prop_dictionary_internalize_from_file(path);
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free(path);
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if (propsd == NULL) {
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printf("%s: unexistent %s metadata file.\n", pkgname,
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XBPS_PKGPROPS);
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rv = errno;
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broken = true;
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goto out;
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} else if (prop_object_type(propsd) != PROP_TYPE_DICTIONARY) {
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printf("%s: invalid %s metadata file.\n", pkgname,
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XBPS_PKGPROPS);
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rv = EINVAL;
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broken = true;
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goto out1;
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} else if (prop_dictionary_count(propsd) == 0) {
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printf("%s: incomplete %s metadata file.\n", pkgname,
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XBPS_PKGPROPS);
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rv = EINVAL;
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broken = true;
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goto out1;
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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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path = xbps_xasprintf("%s/%s/metadata/%s/%s", rootdir,
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XBPS_META_PATH, pkgname, XBPS_PKGFILES);
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if (path == NULL) {
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rv = errno;
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goto out1;
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}
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filesd = prop_dictionary_internalize_from_file(path);
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free(path);
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if (filesd == NULL) {
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printf("%s: unexistent %s metadata file.\n", pkgname,
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XBPS_PKGPROPS);
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rv = ENOENT;
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broken = true;
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goto out1;
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} else if (prop_object_type(filesd) != PROP_TYPE_DICTIONARY) {
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printf("%s: invalid %s metadata file.\n", pkgname,
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XBPS_PKGFILES);
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rv = EINVAL;
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broken = true;
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goto out2;
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} else if (prop_dictionary_count(filesd) == 0) {
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printf("%s: incomplete %s metadata file.\n", pkgname,
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XBPS_PKGFILES);
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rv = EINVAL;
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broken = true;
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goto out2;
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} else if (((array = prop_dictionary_get(filesd, "files")) == NULL) ||
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((array = prop_dictionary_get(filesd, "links")) == NULL) ||
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((array = prop_dictionary_get(filesd, "dirs")) == NULL)) {
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printf("%s: incomplete %s metadata file.\n", pkgname,
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XBPS_PKGFILES);
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rv = EINVAL;
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broken = true;
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goto out2;
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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_get_array_iter_from_dict(filesd, "files");
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if (iter == NULL) {
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rv = ENOMEM;
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goto out2;
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}
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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", rootdir, file);
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if (path == NULL) {
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prop_object_iterator_release(iter);
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rv = errno;
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goto out2;
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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_check_file_hash(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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printf("%s: unexistent file %s.\n",
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pkgname, file);
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files_broken = true;
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broken = true;
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break;
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case ERANGE:
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printf("%s: hash mismatch for %s.\n",
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pkgname, file);
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files_broken = true;
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broken = true;
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break;
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default:
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printf("%s: unexpected error for %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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if (files_broken)
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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_get_array_iter_from_dict(filesd, "conf_files");
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if (iter == NULL) {
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rv = ENOMEM;
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goto out2;
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}
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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", rootdir, file);
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if (path == NULL) {
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prop_object_iterator_release(iter);
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rv = ENOMEM;
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goto out2;
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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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printf("%s: unexistent file %s\n",
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pkgname, file);
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broken = true;
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} else
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printf("%s: unexpected error for "
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"%s (%s)\n", 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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if (rv != 0)
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printf("%s: configuration files check FAILED.\n",
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pkgname);
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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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iter = xbps_get_array_iter_from_dict(propsd, "run_depends");
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if (iter == NULL) {
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rv = ENOMEM;
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goto out2;
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}
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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 (xbps_check_is_installed_pkg(reqpkg) < 0) {
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rv = ENOENT;
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printf("%s: dependency not satisfied: %s\n",
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pkgname, reqpkg);
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broken = true;
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}
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}
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prop_object_iterator_release(iter);
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if (rv == ENOENT)
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printf("%s: run-time dependency check FAILED.\n",
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pkgname);
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}
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out2:
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prop_object_release(filesd);
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out1:
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prop_object_release(propsd);
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out:
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prop_object_release(pkgd);
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if (broken) {
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rv = xbps_set_pkg_state_installed(pkgname,
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XBPS_PKG_STATE_BROKEN);
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if (rv == 0)
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printf("%s: changed package state to broken.\n",
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pkgname);
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else
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printf("%s: can't change package state (%s).\n",
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pkgname, strerror(rv));
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}
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xbps_release_regpkgdb_dict();
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return rv;
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}
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