- unsigned long line_no = 0;
-
- DEBUG("config_len = %zu", config_len);
- bytes_remaining = config_len;
- memset(config, 0, sizeof(*config));
- config_str = MALLOC(config_len);
- if (!config_str) {
- ERROR("Could not duplicate capture config string");
- return WIMLIB_ERR_NOMEM;
- }
-
- memcpy(config_str, _config_str, config_len);
- next_p = config_str;
- config->config_str = config_str;
- while (bytes_remaining) {
- line_no++;
- p = next_p;
- eol = memchr(p, '\n', bytes_remaining);
- if (!eol) {
- ERROR("Expected end-of-line in capture config file on "
- "line %lu", line_no);
- ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG;
- goto out_destroy;
- }
-
- next_p = eol + 1;
- bytes_remaining -= (next_p - p);
- if (eol == p)
- continue;
-
- if (*(eol - 1) == '\r')
- eol--;
- *eol = '\0';
-
- /* Translate backslash to forward slash */
- for (char *pp = p; pp != eol; pp++)
- if (*pp == '\\')
- *pp = '/';
-
- /* Remove drive letter */
- if (eol - p > 2 && isalpha(*p) && *(p + 1) == ':')
- p += 2;
-
- ret = 0;
- if (strcmp(p, "[ExclusionList]") == 0)
- type = EXCLUSION_LIST;
- else if (strcmp(p, "[ExclusionException]") == 0)
- type = EXCLUSION_EXCEPTION;
- else if (strcmp(p, "[CompressionExclusionList]") == 0)
- type = COMPRESSION_EXCLUSION_LIST;
- else if (strcmp(p, "[AlignmentList]") == 0)
- type = ALIGNMENT_LIST;
- else if (p[0] == '[' && strrchr(p, ']')) {
- ERROR("Unknown capture configuration section `%s'", p);
- ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG;
- } else switch (type) {
- case EXCLUSION_LIST:
- DEBUG("Adding pattern \"%s\" to exclusion list", p);
- ret = pattern_list_add_pattern(&config->exclusion_list, p);
- break;
- case EXCLUSION_EXCEPTION:
- DEBUG("Adding pattern \"%s\" to exclusion exception list", p);
- ret = pattern_list_add_pattern(&config->exclusion_exception, p);
- break;
- case COMPRESSION_EXCLUSION_LIST:
- DEBUG("Adding pattern \"%s\" to compression exclusion list", p);
- ret = pattern_list_add_pattern(&config->compression_exclusion_list, p);
- break;
- case ALIGNMENT_LIST:
- DEBUG("Adding pattern \"%s\" to alignment list", p);
- ret = pattern_list_add_pattern(&config->alignment_list, p);
- break;
- default:
- ERROR("Line %lu of capture configuration is not "
- "in a block (such as [ExclusionList])",
- line_no);
- ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG;
- break;
- }
- if (ret != 0)
- goto out_destroy;
- }
- return 0;
-out_destroy:
- destroy_capture_config(config);
- return ret;
-}
-
-static int capture_config_set_prefix(struct capture_config *config,
- const char *_prefix)
-{
- char *prefix = STRDUP(_prefix);
-
- if (!prefix)
- return WIMLIB_ERR_NOMEM;
- FREE(config->prefix);
- config->prefix = prefix;
- config->prefix_len = strlen(prefix);
- return 0;
-}
-
-static bool match_pattern(const char *path, const char *path_basename,
- const struct pattern_list *list)
-{
- for (size_t i = 0; i < list->num_pats; i++) {
- const char *pat = list->pats[i];
- const char *string;
- if (pat[0] == '/')
- /* Absolute path from root of capture */
- string = path;
- else {
- if (strchr(pat, '/'))
- /* Relative path from root of capture */
- string = path + 1;
- else
- /* A file name pattern */
- string = path_basename;
- }
- if (fnmatch(pat, string, FNM_PATHNAME
- #ifdef FNM_CASEFOLD
- | FNM_CASEFOLD
- #endif
- ) == 0)
- {
- DEBUG("`%s' matches the pattern \"%s\"",
- string, pat);
- return true;
- }
- }
- return false;
-}
-
-/* Return true if the image capture configuration file indicates we should
- * exclude the filename @path from capture.
- *
- * If @exclude_prefix is %true, the part of the path up and including the name
- * of the directory being captured is not included in the path for matching
- * purposes. This allows, for example, a pattern like /hiberfil.sys to match a
- * file /mnt/windows7/hiberfil.sys if we are capturing the /mnt/windows7
- * directory.
- */
-bool exclude_path(const char *path, const struct capture_config *config,
- bool exclude_prefix)
-{
- const char *basename = path_basename(path);
- if (exclude_prefix) {
- wimlib_assert(strlen(path) >= config->prefix_len);
- if (memcmp(config->prefix, path, config->prefix_len) == 0
- && path[config->prefix_len] == '/')
- path += config->prefix_len;
- }
- return match_pattern(path, basename, &config->exclusion_list) &&
- !match_pattern(path, basename, &config->exclusion_exception);
-
-}
-
-/* Strip leading and trailing forward slashes from a string. Modifies it in
- * place and returns the stripped string. */
-static const char *canonicalize_target_path(char *target_path)
-{
- char *p;
- if (target_path == NULL)
- return "";
- for (;;) {
- if (*target_path == '\0')
- return target_path;
- else if (*target_path == '/')
- target_path++;
- else
- break;
- }
-
- p = target_path + strlen(target_path) - 1;
- while (*p == '/')
- *p-- = '\0';
- return target_path;
-}
-
-#if defined(__CYGWIN__) || defined(__WIN32__)
-static void zap_backslashes(char *s)
-{
- while (*s) {
- if (*s == '\\')
- *s = '/';
- s++;
- }
-}
-#endif
-
-/* Strip leading and trailing slashes from the target paths */
-static void canonicalize_targets(struct wimlib_capture_source *sources,
- size_t num_sources)
-{
- while (num_sources--) {
- DEBUG("Canonicalizing { source: \"%s\", target=\"%s\"}",
- sources->fs_source_path,
- sources->wim_target_path);
-#if defined(__CYGWIN__) || defined(__WIN32__)
- /* The Windows API can handle forward slashes. Just get rid of
- * backslashes to avoid confusing other parts of the library
- * code. */
- zap_backslashes(sources->fs_source_path);
- if (sources->wim_target_path)
- zap_backslashes(sources->wim_target_path);
-#endif
- sources->wim_target_path =
- (char*)canonicalize_target_path(sources->wim_target_path);
- DEBUG("Canonical target: \"%s\"", sources->wim_target_path);
- sources++;
- }
-}
-
-static int capture_source_cmp(const void *p1, const void *p2)
-{
- const struct wimlib_capture_source *s1 = p1, *s2 = p2;
- return strcmp(s1->wim_target_path, s2->wim_target_path);
-}
-
-/* Sorts the capture sources lexicographically by target path. This occurs
- * after leading and trailing forward slashes are stripped.
- *
- * One purpose of this is to make sure that target paths that are inside other
- * target paths are added after the containing target paths. */
-static void sort_sources(struct wimlib_capture_source *sources,
- size_t num_sources)
-{
- qsort(sources, num_sources, sizeof(sources[0]), capture_source_cmp);
-}
-
-static int check_sorted_sources(struct wimlib_capture_source *sources,
- size_t num_sources, int add_image_flags)
-{
- if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NTFS) {
- if (num_sources != 1) {
- ERROR("Must specify exactly 1 capture source "
- "(the NTFS volume) in NTFS mode!");
- return WIMLIB_ERR_INVALID_PARAM;
- }
- if (sources[0].wim_target_path[0] != '\0') {
- ERROR("In NTFS capture mode the target path inside "
- "the image must be the root directory!");
- return WIMLIB_ERR_INVALID_PARAM;
- }
- } else if (num_sources != 0) {
- /* This code is disabled because the current code
- * unconditionally attempts to do overlays. So, duplicate
- * target paths are OK. */
- #if 0
- if (num_sources > 1 && sources[0].wim_target_path[0] == '\0') {
- ERROR("Cannot specify root target when using multiple "
- "capture sources!");
- return WIMLIB_ERR_INVALID_PARAM;
- }
- for (size_t i = 0; i < num_sources - 1; i++) {
- size_t len = strlen(sources[i].wim_target_path);
- size_t j = i + 1;
- const char *target1 = sources[i].wim_target_path;
- do {
- const char *target2 = sources[j].wim_target_path;
- DEBUG("target1=%s, target2=%s",
- target1,target2);
- if (strncmp(target1, target2, len) ||
- target2[len] > '/')
- break;
- if (target2[len] == '/') {
- ERROR("Invalid target `%s': is a prefix of `%s'",
- target1, target2);
- return WIMLIB_ERR_INVALID_PARAM;
- }
- if (target2[len] == '\0') {
- ERROR("Invalid target `%s': is a duplicate of `%s'",
- target1, target2);
- return WIMLIB_ERR_INVALID_PARAM;
- }
- } while (++j != num_sources);
- }
- #endif
- }
- return 0;