diff options
Diffstat (limited to 'src/libs/3rdparty/libarchive/archive_read_support_filter_xz.c')
| -rw-r--r-- | src/libs/3rdparty/libarchive/archive_read_support_filter_xz.c | 796 |
1 files changed, 796 insertions, 0 deletions
diff --git a/src/libs/3rdparty/libarchive/archive_read_support_filter_xz.c b/src/libs/3rdparty/libarchive/archive_read_support_filter_xz.c new file mode 100644 index 000000000..11807cf67 --- /dev/null +++ b/src/libs/3rdparty/libarchive/archive_read_support_filter_xz.c @@ -0,0 +1,796 @@ +/*- + * Copyright (c) 2009-2011 Michihiro NAKAJIMA + * Copyright (c) 2003-2008 Tim Kientzle and Miklos Vajna + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "archive_platform.h" + +__FBSDID("$FreeBSD$"); + +#ifdef HAVE_ERRNO_H +#include <errno.h> +#endif +#include <stdio.h> +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#if HAVE_LZMA_H +#include <lzma.h> +#endif + +#include "archive.h" +#include "archive_endian.h" +#include "archive_private.h" +#include "archive_read_private.h" + +#if HAVE_LZMA_H && HAVE_LIBLZMA + +struct private_data { + lzma_stream stream; + unsigned char *out_block; + size_t out_block_size; + int64_t total_out; + char eof; /* True = found end of compressed data. */ + char in_stream; + + /* Following variables are used for lzip only. */ + char lzip_ver; + uint32_t crc32; + int64_t member_in; + int64_t member_out; +}; + +#if LZMA_VERSION_MAJOR >= 5 +/* Effectively disable the limiter. */ +#define LZMA_MEMLIMIT UINT64_MAX +#else +/* NOTE: This needs to check memory size which running system has. */ +#define LZMA_MEMLIMIT (1U << 30) +#endif + +/* Combined lzip/lzma/xz filter */ +static ssize_t xz_filter_read(struct archive_read_filter *, const void **); +static int xz_filter_close(struct archive_read_filter *); +static int xz_lzma_bidder_init(struct archive_read_filter *); + +#endif + +/* + * Note that we can detect xz and lzma compressed files even if we + * can't decompress them. (In fact, we like detecting them because we + * can give better error messages.) So the bid framework here gets + * compiled even if no lzma library is available. + */ +static int xz_bidder_bid(struct archive_read_filter_bidder *, + struct archive_read_filter *); +static int xz_bidder_init(struct archive_read_filter *); +static int lzma_bidder_bid(struct archive_read_filter_bidder *, + struct archive_read_filter *); +static int lzma_bidder_init(struct archive_read_filter *); +static int lzip_has_member(struct archive_read_filter *); +static int lzip_bidder_bid(struct archive_read_filter_bidder *, + struct archive_read_filter *); +static int lzip_bidder_init(struct archive_read_filter *); + +#if ARCHIVE_VERSION_NUMBER < 4000000 +/* Deprecated; remove in libarchive 4.0 */ +int +archive_read_support_compression_xz(struct archive *a) +{ + return archive_read_support_filter_xz(a); +} +#endif + +int +archive_read_support_filter_xz(struct archive *_a) +{ + struct archive_read *a = (struct archive_read *)_a; + struct archive_read_filter_bidder *bidder; + + archive_check_magic(_a, ARCHIVE_READ_MAGIC, + ARCHIVE_STATE_NEW, "archive_read_support_filter_xz"); + + if (__archive_read_get_bidder(a, &bidder) != ARCHIVE_OK) + return (ARCHIVE_FATAL); + + bidder->data = NULL; + bidder->name = "xz"; + bidder->bid = xz_bidder_bid; + bidder->init = xz_bidder_init; + bidder->options = NULL; + bidder->free = NULL; +#if HAVE_LZMA_H && HAVE_LIBLZMA + return (ARCHIVE_OK); +#else + archive_set_error(_a, ARCHIVE_ERRNO_MISC, + "Using external xz program for xz decompression"); + return (ARCHIVE_WARN); +#endif +} + +#if ARCHIVE_VERSION_NUMBER < 4000000 +int +archive_read_support_compression_lzma(struct archive *a) +{ + return archive_read_support_filter_lzma(a); +} +#endif + +int +archive_read_support_filter_lzma(struct archive *_a) +{ + struct archive_read *a = (struct archive_read *)_a; + struct archive_read_filter_bidder *bidder; + + archive_check_magic(_a, ARCHIVE_READ_MAGIC, + ARCHIVE_STATE_NEW, "archive_read_support_filter_lzma"); + + if (__archive_read_get_bidder(a, &bidder) != ARCHIVE_OK) + return (ARCHIVE_FATAL); + + bidder->data = NULL; + bidder->name = "lzma"; + bidder->bid = lzma_bidder_bid; + bidder->init = lzma_bidder_init; + bidder->options = NULL; + bidder->free = NULL; +#if HAVE_LZMA_H && HAVE_LIBLZMA + return (ARCHIVE_OK); +#else + archive_set_error(_a, ARCHIVE_ERRNO_MISC, + "Using external lzma program for lzma decompression"); + return (ARCHIVE_WARN); +#endif +} + + +#if ARCHIVE_VERSION_NUMBER < 4000000 +int +archive_read_support_compression_lzip(struct archive *a) +{ + return archive_read_support_filter_lzip(a); +} +#endif + +int +archive_read_support_filter_lzip(struct archive *_a) +{ + struct archive_read *a = (struct archive_read *)_a; + struct archive_read_filter_bidder *bidder; + + archive_check_magic(_a, ARCHIVE_READ_MAGIC, + ARCHIVE_STATE_NEW, "archive_read_support_filter_lzip"); + + if (__archive_read_get_bidder(a, &bidder) != ARCHIVE_OK) + return (ARCHIVE_FATAL); + + bidder->data = NULL; + bidder->name = "lzip"; + bidder->bid = lzip_bidder_bid; + bidder->init = lzip_bidder_init; + bidder->options = NULL; + bidder->free = NULL; +#if HAVE_LZMA_H && HAVE_LIBLZMA + return (ARCHIVE_OK); +#else + archive_set_error(_a, ARCHIVE_ERRNO_MISC, + "Using external lzip program for lzip decompression"); + return (ARCHIVE_WARN); +#endif +} + +/* + * Test whether we can handle this data. + */ +static int +xz_bidder_bid(struct archive_read_filter_bidder *self, + struct archive_read_filter *filter) +{ + const unsigned char *buffer; + ssize_t avail; + + (void)self; /* UNUSED */ + + buffer = __archive_read_filter_ahead(filter, 6, &avail); + if (buffer == NULL) + return (0); + + /* + * Verify Header Magic Bytes : FD 37 7A 58 5A 00 + */ + if (memcmp(buffer, "\xFD\x37\x7A\x58\x5A\x00", 6) != 0) + return (0); + + return (48); +} + +/* + * Test whether we can handle this data. + * + * <sigh> LZMA has a rather poor file signature. Zeros do not + * make good signature bytes as a rule, and the only non-zero byte + * here is an ASCII character. For example, an uncompressed tar + * archive whose first file is ']' would satisfy this check. It may + * be necessary to exclude LZMA from compression_all() because of + * this. Clients of libarchive would then have to explicitly enable + * LZMA checking instead of (or in addition to) compression_all() when + * they have other evidence (file name, command-line option) to go on. + */ +static int +lzma_bidder_bid(struct archive_read_filter_bidder *self, + struct archive_read_filter *filter) +{ + const unsigned char *buffer; + ssize_t avail; + uint32_t dicsize; + uint64_t uncompressed_size; + int bits_checked; + + (void)self; /* UNUSED */ + + buffer = __archive_read_filter_ahead(filter, 14, &avail); + if (buffer == NULL) + return (0); + + /* First byte of raw LZMA stream is commonly 0x5d. + * The first byte is a special number, which consists of + * three parameters of LZMA compression, a number of literal + * context bits(which is from 0 to 8, default is 3), a number + * of literal pos bits(which is from 0 to 4, default is 0), + * a number of pos bits(which is from 0 to 4, default is 2). + * The first byte is made by + * (pos bits * 5 + literal pos bit) * 9 + * literal contest bit, + * and so the default value in this field is + * (2 * 5 + 0) * 9 + 3 = 0x5d. + * lzma of LZMA SDK has options to change those parameters. + * It means a range of this field is from 0 to 224. And lzma of + * XZ Utils with option -e records 0x5e in this field. */ + /* NOTE: If this checking of the first byte increases false + * recognition, we should allow only 0x5d and 0x5e for the first + * byte of LZMA stream. */ + bits_checked = 0; + if (buffer[0] > (4 * 5 + 4) * 9 + 8) + return (0); + /* Most likely value in the first byte of LZMA stream. */ + if (buffer[0] == 0x5d || buffer[0] == 0x5e) + bits_checked += 8; + + /* Sixth through fourteenth bytes are uncompressed size, + * stored in little-endian order. `-1' means uncompressed + * size is unknown and lzma of XZ Utils always records `-1' + * in this field. */ + uncompressed_size = archive_le64dec(buffer+5); + if (uncompressed_size == (uint64_t)ARCHIVE_LITERAL_LL(-1)) + bits_checked += 64; + + /* Second through fifth bytes are dictionary size, stored in + * little-endian order. The minimum dictionary size is + * 1 << 12(4KiB) which the lzma of LZMA SDK uses with option + * -d12 and the maximum dictionary size is 1 << 27(128MiB) + * which the one uses with option -d27. + * NOTE: A comment of LZMA SDK source code says this dictionary + * range is from 1 << 12 to 1 << 30. */ + dicsize = archive_le32dec(buffer+1); + switch (dicsize) { + case 0x00001000:/* lzma of LZMA SDK option -d12. */ + case 0x00002000:/* lzma of LZMA SDK option -d13. */ + case 0x00004000:/* lzma of LZMA SDK option -d14. */ + case 0x00008000:/* lzma of LZMA SDK option -d15. */ + case 0x00010000:/* lzma of XZ Utils option -0 and -1. + * lzma of LZMA SDK option -d16. */ + case 0x00020000:/* lzma of LZMA SDK option -d17. */ + case 0x00040000:/* lzma of LZMA SDK option -d18. */ + case 0x00080000:/* lzma of XZ Utils option -2. + * lzma of LZMA SDK option -d19. */ + case 0x00100000:/* lzma of XZ Utils option -3. + * lzma of LZMA SDK option -d20. */ + case 0x00200000:/* lzma of XZ Utils option -4. + * lzma of LZMA SDK option -d21. */ + case 0x00400000:/* lzma of XZ Utils option -5. + * lzma of LZMA SDK option -d22. */ + case 0x00800000:/* lzma of XZ Utils option -6. + * lzma of LZMA SDK option -d23. */ + case 0x01000000:/* lzma of XZ Utils option -7. + * lzma of LZMA SDK option -d24. */ + case 0x02000000:/* lzma of XZ Utils option -8. + * lzma of LZMA SDK option -d25. */ + case 0x04000000:/* lzma of XZ Utils option -9. + * lzma of LZMA SDK option -d26. */ + case 0x08000000:/* lzma of LZMA SDK option -d27. */ + bits_checked += 32; + break; + default: + /* If a memory usage for encoding was not enough on + * the platform where LZMA stream was made, lzma of + * XZ Utils automatically decreased the dictionary + * size to enough memory for encoding by 1Mi bytes + * (1 << 20).*/ + if (dicsize <= 0x03F00000 && dicsize >= 0x00300000 && + (dicsize & ((1 << 20)-1)) == 0 && + bits_checked == 8 + 64) { + bits_checked += 32; + break; + } + /* Otherwise dictionary size is unlikely. But it is + * possible that someone makes lzma stream with + * liblzma/LZMA SDK in one's dictionary size. */ + return (0); + } + + /* TODO: The above test is still very weak. It would be + * good to do better. */ + + return (bits_checked); +} + +static int +lzip_has_member(struct archive_read_filter *filter) +{ + const unsigned char *buffer; + ssize_t avail; + int bits_checked; + int log2dic; + + buffer = __archive_read_filter_ahead(filter, 6, &avail); + if (buffer == NULL) + return (0); + + /* + * Verify Header Magic Bytes : 4C 5A 49 50 (`LZIP') + */ + bits_checked = 0; + if (memcmp(buffer, "LZIP", 4) != 0) + return (0); + bits_checked += 32; + + /* A version number must be 0 or 1 */ + if (buffer[4] != 0 && buffer[4] != 1) + return (0); + bits_checked += 8; + + /* Dictionary size. */ + log2dic = buffer[5] & 0x1f; + if (log2dic < 12 || log2dic > 27) + return (0); + bits_checked += 8; + + return (bits_checked); +} + +static int +lzip_bidder_bid(struct archive_read_filter_bidder *self, + struct archive_read_filter *filter) +{ + + (void)self; /* UNUSED */ + return (lzip_has_member(filter)); +} + +#if HAVE_LZMA_H && HAVE_LIBLZMA + +/* + * liblzma 4.999.7 and later support both lzma and xz streams. + */ +static int +xz_bidder_init(struct archive_read_filter *self) +{ + self->code = ARCHIVE_FILTER_XZ; + self->name = "xz"; + return (xz_lzma_bidder_init(self)); +} + +static int +lzma_bidder_init(struct archive_read_filter *self) +{ + self->code = ARCHIVE_FILTER_LZMA; + self->name = "lzma"; + return (xz_lzma_bidder_init(self)); +} + +static int +lzip_bidder_init(struct archive_read_filter *self) +{ + self->code = ARCHIVE_FILTER_LZIP; + self->name = "lzip"; + return (xz_lzma_bidder_init(self)); +} + +/* + * Set an error code and choose an error message + */ +static void +set_error(struct archive_read_filter *self, int ret) +{ + + switch (ret) { + case LZMA_STREAM_END: /* Found end of stream. */ + case LZMA_OK: /* Decompressor made some progress. */ + break; + case LZMA_MEM_ERROR: + archive_set_error(&self->archive->archive, ENOMEM, + "Lzma library error: Cannot allocate memory"); + break; + case LZMA_MEMLIMIT_ERROR: + archive_set_error(&self->archive->archive, ENOMEM, + "Lzma library error: Out of memory"); + break; + case LZMA_FORMAT_ERROR: + archive_set_error(&self->archive->archive, + ARCHIVE_ERRNO_MISC, + "Lzma library error: format not recognized"); + break; + case LZMA_OPTIONS_ERROR: + archive_set_error(&self->archive->archive, + ARCHIVE_ERRNO_MISC, + "Lzma library error: Invalid options"); + break; + case LZMA_DATA_ERROR: + archive_set_error(&self->archive->archive, + ARCHIVE_ERRNO_MISC, + "Lzma library error: Corrupted input data"); + break; + case LZMA_BUF_ERROR: + archive_set_error(&self->archive->archive, + ARCHIVE_ERRNO_MISC, + "Lzma library error: No progress is possible"); + break; + default: + /* Return an error. */ + archive_set_error(&self->archive->archive, + ARCHIVE_ERRNO_MISC, + "Lzma decompression failed: Unknown error"); + break; + } +} + +/* + * Setup the callbacks. + */ +static int +xz_lzma_bidder_init(struct archive_read_filter *self) +{ + static const size_t out_block_size = 64 * 1024; + void *out_block; + struct private_data *state; + int ret; + + state = (struct private_data *)calloc(sizeof(*state), 1); + out_block = (unsigned char *)malloc(out_block_size); + if (state == NULL || out_block == NULL) { + archive_set_error(&self->archive->archive, ENOMEM, + "Can't allocate data for xz decompression"); + free(out_block); + free(state); + return (ARCHIVE_FATAL); + } + + self->data = state; + state->out_block_size = out_block_size; + state->out_block = out_block; + self->read = xz_filter_read; + self->skip = NULL; /* not supported */ + self->close = xz_filter_close; + + state->stream.avail_in = 0; + + state->stream.next_out = state->out_block; + state->stream.avail_out = state->out_block_size; + + state->crc32 = 0; + if (self->code == ARCHIVE_FILTER_LZIP) { + /* + * We have to read a lzip header and use it to initialize + * compression library, thus we cannot initialize the + * library for lzip here. + */ + state->in_stream = 0; + return (ARCHIVE_OK); + } else + state->in_stream = 1; + + /* Initialize compression library. */ + if (self->code == ARCHIVE_FILTER_XZ) + ret = lzma_stream_decoder(&(state->stream), + LZMA_MEMLIMIT,/* memlimit */ + LZMA_CONCATENATED); + else + ret = lzma_alone_decoder(&(state->stream), + LZMA_MEMLIMIT);/* memlimit */ + + if (ret == LZMA_OK) + return (ARCHIVE_OK); + + /* Library setup failed: Choose an error message and clean up. */ + set_error(self, ret); + + free(state->out_block); + free(state); + self->data = NULL; + return (ARCHIVE_FATAL); +} + +static int +lzip_init(struct archive_read_filter *self) +{ + struct private_data *state; + const unsigned char *h; + lzma_filter filters[2]; + unsigned char props[5]; + ssize_t avail_in; + uint32_t dicsize; + int log2dic, ret; + + state = (struct private_data *)self->data; + h = __archive_read_filter_ahead(self->upstream, 6, &avail_in); + if (h == NULL) + return (ARCHIVE_FATAL); + + /* Get a version number. */ + state->lzip_ver = h[4]; + + /* + * Setup lzma property. + */ + props[0] = 0x5d; + + /* Get dictionary size. */ + log2dic = h[5] & 0x1f; + if (log2dic < 12 || log2dic > 27) + return (ARCHIVE_FATAL); + dicsize = 1U << log2dic; + if (log2dic > 12) + dicsize -= (dicsize / 16) * (h[5] >> 5); + archive_le32enc(props+1, dicsize); + + /* Consume lzip header. */ + __archive_read_filter_consume(self->upstream, 6); + state->member_in = 6; + + filters[0].id = LZMA_FILTER_LZMA1; + filters[0].options = NULL; + filters[1].id = LZMA_VLI_UNKNOWN; + filters[1].options = NULL; + + ret = lzma_properties_decode(&filters[0], NULL, props, sizeof(props)); + if (ret != LZMA_OK) { + set_error(self, ret); + return (ARCHIVE_FATAL); + } + ret = lzma_raw_decoder(&(state->stream), filters); + free(filters[0].options); + if (ret != LZMA_OK) { + set_error(self, ret); + return (ARCHIVE_FATAL); + } + return (ARCHIVE_OK); +} + +static int +lzip_tail(struct archive_read_filter *self) +{ + struct private_data *state; + const unsigned char *f; + ssize_t avail_in; + int tail; + + state = (struct private_data *)self->data; + if (state->lzip_ver == 0) + tail = 12; + else + tail = 20; + f = __archive_read_filter_ahead(self->upstream, tail, &avail_in); + if (f == NULL && avail_in < 0) + return (ARCHIVE_FATAL); + if (f == NULL || avail_in < tail) { + archive_set_error(&self->archive->archive, ARCHIVE_ERRNO_MISC, + "Lzip: Remaining data is less bytes"); + return (ARCHIVE_FAILED); + } + + /* Check the crc32 value of the uncompressed data of the current + * member */ + if (state->crc32 != archive_le32dec(f)) { + archive_set_error(&self->archive->archive, ARCHIVE_ERRNO_MISC, + "Lzip: CRC32 error"); + return (ARCHIVE_FAILED); + } + + /* Check the uncompressed size of the current member */ + if ((uint64_t)state->member_out != archive_le64dec(f + 4)) { + archive_set_error(&self->archive->archive, ARCHIVE_ERRNO_MISC, + "Lzip: Uncompressed size error"); + return (ARCHIVE_FAILED); + } + + /* Check the total size of the current member */ + if (state->lzip_ver == 1 && + (uint64_t)state->member_in + tail != archive_le64dec(f + 12)) { + archive_set_error(&self->archive->archive, ARCHIVE_ERRNO_MISC, + "Lzip: Member size error"); + return (ARCHIVE_FAILED); + } + __archive_read_filter_consume(self->upstream, tail); + + /* If current lzip data consists of multi member, try decompressing + * a next member. */ + if (lzip_has_member(self->upstream) != 0) { + state->in_stream = 0; + state->crc32 = 0; + state->member_out = 0; + state->member_in = 0; + state->eof = 0; + } + return (ARCHIVE_OK); +} + +/* + * Return the next block of decompressed data. + */ +static ssize_t +xz_filter_read(struct archive_read_filter *self, const void **p) +{ + struct private_data *state; + size_t decompressed; + ssize_t avail_in; + int ret; + + state = (struct private_data *)self->data; + + /* Empty our output buffer. */ + state->stream.next_out = state->out_block; + state->stream.avail_out = state->out_block_size; + + /* Try to fill the output buffer. */ + while (state->stream.avail_out > 0 && !state->eof) { + if (!state->in_stream) { + /* + * Initialize liblzma for lzip + */ + ret = lzip_init(self); + if (ret != ARCHIVE_OK) + return (ret); + state->in_stream = 1; + } + state->stream.next_in = + __archive_read_filter_ahead(self->upstream, 1, &avail_in); + if (state->stream.next_in == NULL && avail_in < 0) { + archive_set_error(&self->archive->archive, + ARCHIVE_ERRNO_MISC, + "truncated input"); + return (ARCHIVE_FATAL); + } + state->stream.avail_in = avail_in; + + /* Decompress as much as we can in one pass. */ + ret = lzma_code(&(state->stream), + (state->stream.avail_in == 0)? LZMA_FINISH: LZMA_RUN); + switch (ret) { + case LZMA_STREAM_END: /* Found end of stream. */ + state->eof = 1; + /* FALL THROUGH */ + case LZMA_OK: /* Decompressor made some progress. */ + __archive_read_filter_consume(self->upstream, + avail_in - state->stream.avail_in); + state->member_in += + avail_in - state->stream.avail_in; + break; + default: + set_error(self, ret); + return (ARCHIVE_FATAL); + } + } + + decompressed = state->stream.next_out - state->out_block; + state->total_out += decompressed; + state->member_out += decompressed; + if (decompressed == 0) + *p = NULL; + else { + *p = state->out_block; + if (self->code == ARCHIVE_FILTER_LZIP) { + state->crc32 = lzma_crc32(state->out_block, + decompressed, state->crc32); + if (state->eof) { + ret = lzip_tail(self); + if (ret != ARCHIVE_OK) + return (ret); + } + } + } + return (decompressed); +} + +/* + * Clean up the decompressor. + */ +static int +xz_filter_close(struct archive_read_filter *self) +{ + struct private_data *state; + + state = (struct private_data *)self->data; + lzma_end(&(state->stream)); + free(state->out_block); + free(state); + return (ARCHIVE_OK); +} + +#else + +/* + * + * If we have no suitable library on this system, we can't actually do + * the decompression. We can, however, still detect compressed + * archives and emit a useful message. + * + */ +static int +lzma_bidder_init(struct archive_read_filter *self) +{ + int r; + + r = __archive_read_program(self, "lzma -d -qq"); + /* Note: We set the format here even if __archive_read_program() + * above fails. We do, after all, know what the format is + * even if we weren't able to read it. */ + self->code = ARCHIVE_FILTER_LZMA; + self->name = "lzma"; + return (r); +} + +static int +xz_bidder_init(struct archive_read_filter *self) +{ + int r; + + r = __archive_read_program(self, "xz -d -qq"); + /* Note: We set the format here even if __archive_read_program() + * above fails. We do, after all, know what the format is + * even if we weren't able to read it. */ + self->code = ARCHIVE_FILTER_XZ; + self->name = "xz"; + return (r); +} + +static int +lzip_bidder_init(struct archive_read_filter *self) +{ + int r; + + r = __archive_read_program(self, "lzip -d -q"); + /* Note: We set the format here even if __archive_read_program() + * above fails. We do, after all, know what the format is + * even if we weren't able to read it. */ + self->code = ARCHIVE_FILTER_LZIP; + self->name = "lzip"; + return (r); +} + +#endif /* HAVE_LZMA_H */ |