libarchive/libarchive/archive_read_support_format_ar.c

52 struct ar {
61  * Define structure of the "ar" header.
88 static int	ar_parse_common_header(struct ar *ar, struct archive_entry *,
95 	struct ar *ar;
98 	ar = (struct ar *)malloc(sizeof(*ar));
99 	if (ar == NULL) {
101 		    "Can't allocate ar data");
104 	memset(ar, 0, sizeof(*ar));
105 	ar->strtab = NULL;
108 	    ar,
109 	    "ar",
118 		free(ar);
127 	struct ar *ar;
129 	ar = (struct ar *)(a->format->data);
130 	if (ar->strtab)
131 		free(ar->strtab);
132 	free(ar);
164 	struct ar *ar;
173 	ar = (struct ar*)(a->format->data);
178 		 * so we need first consume the ar global header.
221 		 * XXX Do GNU/SVR4 'ar' programs ever omit trailing '/'
229 		a->archive.archive_format_name = "ar (GNU/SVR4)";
231 		a->archive.archive_format_name = "ar (BSD)";
233 		a->archive.archive_format_name = "ar";
238 	 * This will only be wrong if GNU/SVR4 'ar' implementations
264 		ar_parse_common_header(ar, entry, h);
280 		if (ar->strtab != NULL) {
293 		ar->strtab = st;
294 		ar->strtab_size = entry_size;
300 		ar->entry_bytes_remaining = 0;
301 		archive_entry_set_size(entry, ar->entry_bytes_remaining);
319 		if (ar->strtab == NULL || number > ar->strtab_size) {
324 			ar_parse_common_header(ar, entry, h);
328 		archive_entry_copy_pathname(entry, &ar->strtab[(size_t)number]);
330 		return (ar_parse_common_header(ar, entry, h));
341 		ar_parse_common_header(ar, entry, h);
350 		    || (off_t)bsd_name_length > ar->entry_bytes_remaining) {
355 		ar->entry_bytes_remaining -= bsd_name_length;
357 		archive_entry_set_size(entry, ar->entry_bytes_remaining);
387 		r = ar_parse_common_header(ar, entry, h);
399 		return (ar_parse_common_header(ar, entry, h));
408 	return (ar_parse_common_header(ar, entry, h));
412 ar_parse_common_header(struct ar *ar, struct archive_entry *entry,
428 	ar->entry_offset = 0;
429 	ar->entry_padding = n % 2;
431 	ar->entry_bytes_remaining = n;
440 	struct ar *ar;
442 	ar = (struct ar *)(a->format->data);
444 	if (ar->entry_bytes_remaining > 0) {
448 			    "Truncated ar archive");
453 		if (bytes_read > ar->entry_bytes_remaining)
454 			bytes_read = (ssize_t)ar->entry_bytes_remaining;
456 		*offset = ar->entry_offset;
457 		ar->entry_offset += bytes_read;
458 		ar->entry_bytes_remaining -= bytes_read;
462 		while (ar->entry_padding > 0) {
466 			if (bytes_read > ar->entry_padding)
467 				bytes_read = (ssize_t)ar->entry_padding;
469 			ar->entry_padding -= bytes_read;
473 		*offset = ar->entry_offset;
482 	struct ar* ar;
484 	ar = (struct ar *)(a->format->data);
487 	    ar->entry_bytes_remaining + ar->entry_padding);
491 	ar->entry_bytes_remaining = 0;
492 	ar->entry_padding = 0;
500 	struct ar *ar;
504 	ar = (struct ar*)(a->format->data);
505 	size = ar->strtab_size;
507 	for (p = ar->strtab; p < ar->strtab + size - 1; ++p) {
516 	 * GNU ar always pads the table to an even size.
519 	if (p != ar->strtab + size && *p != '\n' && *p != '`')
523 	ar->strtab[size - 1] = '\0';
530 	free(ar->strtab);
531 	ar->strtab = NULL;