int
archive_read_support_filter_all(struct archive *a)
{
archive_check_magic(a, ARCHIVE_READ_MAGIC,
ARCHIVE_STATE_NEW, "archive_read_support_filter_all");
/* Bzip falls back to "bunzip2" command-line */
archive_read_support_filter_bzip2(a);
/* The decompress code doesn't use an outside library. */
archive_read_support_filter_compress(a);
/* Gzip decompress falls back to "gzip -d" command-line. */
archive_read_support_filter_gzip(a);
/* Lzip falls back to "unlzip" command-line program. */
archive_read_support_filter_lzip(a);
/* The LZMA file format has a very weak signature, so it
* may not be feasible to keep this here, but we'll try.
* This will come back out if there are problems. */
/* Lzma falls back to "unlzma" command-line program. */
archive_read_support_filter_lzma(a);
/* Xz falls back to "unxz" command-line program. */
archive_read_support_filter_xz(a);
/* The decode code doesn't use an outside library. */
archive_read_support_filter_uu(a);
/* The decode code doesn't use an outside library. */
archive_read_support_filter_rpm(a);
/* The decode code always uses "lrzip -q -d" command-line. */
archive_read_support_filter_lrzip(a);
/* Lzop decompress falls back to "lzop -d" command-line. */
archive_read_support_filter_lzop(a);
/* The decode code always uses "grzip -d" command-line. */
archive_read_support_filter_grzip(a);
/* Lz4 falls back to "lz4 -d" command-line program. */
archive_read_support_filter_lz4(a);
/* Zstd falls back to "zstd -d" command-line program. */
archive_read_support_filter_zstd(a);
/* Note: We always return ARCHIVE_OK here, even if some of the
* above return ARCHIVE_WARN. The intent here is to enable
* "as much as possible." Clients who need specific
* compression should enable those individually so they can
* verify the level of support. */
/* Clear any warning messages set by the above functions. */
archive_clear_error(a);
return (ARCHIVE_OK);
}
int
archive_read_append_filter(struct archive *_a, int code)
{
int r1, r2, number_bidders, i;
char str[20];
struct archive_read_filter_bidder *bidder;
struct archive_read_filter *filter;
struct archive_read *a = (struct archive_read *)_a;
r1 = r2 = (ARCHIVE_OK);
switch (code)
{
case ARCHIVE_FILTER_NONE:
/* No filter to add, so do nothing.
* NOTE: An initial "NONE" type filter is always set at the end of the
* filter chain.
*/
r1 = (ARCHIVE_OK);
break;
case ARCHIVE_FILTER_GZIP:
strcpy(str, "gzip");
r1 = archive_read_support_filter_gzip(_a);
break;
case ARCHIVE_FILTER_BZIP2:
strcpy(str, "bzip2");
r1 = archive_read_support_filter_bzip2(_a);
break;
case ARCHIVE_FILTER_COMPRESS:
strcpy(str, "compress (.Z)");
r1 = archive_read_support_filter_compress(_a);
break;
case ARCHIVE_FILTER_PROGRAM:
archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
"Cannot append program filter using archive_read_append_filter");
return (ARCHIVE_FATAL);
case ARCHIVE_FILTER_LZMA:
strcpy(str, "lzma");
r1 = archive_read_support_filter_lzma(_a);
break;
case ARCHIVE_FILTER_XZ:
strcpy(str, "xz");
r1 = archive_read_support_filter_xz(_a);
break;
case ARCHIVE_FILTER_UU:
strcpy(str, "uu");
r1 = archive_read_support_filter_uu(_a);
break;
case ARCHIVE_FILTER_RPM:
strcpy(str, "rpm");
r1 = archive_read_support_filter_rpm(_a);
break;
case ARCHIVE_FILTER_LZIP:
strcpy(str, "lzip");
r1 = archive_read_support_filter_lzip(_a);
break;
case ARCHIVE_FILTER_LRZIP:
strcpy(str, "lrzip");
r1 = archive_read_support_filter_lrzip(_a);
break;
default:
archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
"Invalid filter code specified");
return (ARCHIVE_FATAL);
}
if (code != ARCHIVE_FILTER_NONE)
{
number_bidders = sizeof(a->bidders) / sizeof(a->bidders[0]);
bidder = a->bidders;
for (i = 0; i < number_bidders; i++, bidder++)
{
if (!bidder->name || !strcmp(bidder->name, str))
break;
}
if (!bidder->name || strcmp(bidder->name, str))
{
archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
"Internal error: Unable to append filter");
return (ARCHIVE_FATAL);
}
filter
= (struct archive_read_filter *)calloc(1, sizeof(*filter));
if (filter == NULL)
{
archive_set_error(&a->archive, ENOMEM, "Out of memory");
return (ARCHIVE_FATAL);
}
filter->bidder = bidder;
filter->archive = a;
filter->upstream = a->filter;
a->filter = filter;
r2 = (bidder->init)(a->filter);
if (r2 != ARCHIVE_OK) {
__archive_read_close_filters(a);
__archive_read_free_filters(a);
return (ARCHIVE_FATAL);
}
}
a->bypass_filter_bidding = 1;
return (r1 < r2) ? r1 : r2;
}
