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-rw-r--r--g10/compress-bz2.c242
1 files changed, 0 insertions, 242 deletions
diff --git a/g10/compress-bz2.c b/g10/compress-bz2.c
deleted file mode 100644
index 7a8075ae4..000000000
--- a/g10/compress-bz2.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/* compress.c - bzip2 compress filter
- * Copyright (C) 2003, 2004 Free Software Foundation, Inc.
- *
- * This file is part of GnuPG.
- *
- * GnuPG is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * GnuPG is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
- */
-
-#include <config.h>
-#include <string.h>
-#include <stdio.h> /* Early versions of bzlib (1.0) require stdio.h */
-#include <bzlib.h>
-
-#include "util.h"
-#include "memory.h"
-#include "packet.h"
-#include "filter.h"
-#include "main.h"
-#include "options.h"
-
-/* Note that the code in compress.c is nearly identical to the code
- here, so if you fix a bug here, look there to see if a matching bug
- needs to be fixed. I tried to have one set of functions that could
- do ZIP, ZLIB, and BZIP2, but it became dangerously unreadable with
- #ifdefs and if(algo) -dshaw */
-
-static void
-init_compress( compress_filter_context_t *zfx, bz_stream *bzs )
-{
- int rc;
- int level;
-
- if( opt.bz2_compress_level >= 1 && opt.bz2_compress_level <= 9 )
- level = opt.bz2_compress_level;
- else if( opt.bz2_compress_level == -1 )
- level = 6; /* no particular reason, but it seems reasonable */
- else
- {
- log_error("invalid compression level; using default level\n");
- level = 6;
- }
-
- if((rc=BZ2_bzCompressInit(bzs,level,0,0))!=BZ_OK)
- log_fatal("bz2lib problem: %d\n",rc);
-
- zfx->outbufsize = 8192;
- zfx->outbuf = xmalloc( zfx->outbufsize );
-}
-
-static int
-do_compress(compress_filter_context_t *zfx, bz_stream *bzs, int flush, IOBUF a)
-{
- int zrc;
- unsigned n;
-
- do
- {
- bzs->next_out = zfx->outbuf;
- bzs->avail_out = zfx->outbufsize;
- if( DBG_FILTER )
- log_debug("enter bzCompress: avail_in=%u, avail_out=%u, flush=%d\n",
- (unsigned)bzs->avail_in, (unsigned)bzs->avail_out, flush );
- zrc = BZ2_bzCompress( bzs, flush );
- if( zrc == BZ_STREAM_END && flush == BZ_FINISH )
- ;
- else if( zrc != BZ_RUN_OK && zrc != BZ_FINISH_OK )
- log_fatal("bz2lib deflate problem: rc=%d\n", zrc );
-
- n = zfx->outbufsize - bzs->avail_out;
- if( DBG_FILTER )
- log_debug("leave bzCompress:"
- " avail_in=%u, avail_out=%u, n=%u, zrc=%d\n",
- (unsigned)bzs->avail_in, (unsigned)bzs->avail_out,
- (unsigned)n, zrc );
-
- if( iobuf_write( a, zfx->outbuf, n ) )
- {
- log_debug("bzCompress: iobuf_write failed\n");
- return G10ERR_WRITE_FILE;
- }
- }
- while( bzs->avail_in || (flush == BZ_FINISH && zrc != BZ_STREAM_END) );
-
- return 0;
-}
-
-static void
-init_uncompress( compress_filter_context_t *zfx, bz_stream *bzs )
-{
- int rc;
-
- if((rc=BZ2_bzDecompressInit(bzs,0,opt.bz2_decompress_lowmem))!=BZ_OK)
- log_fatal("bz2lib problem: %d\n",rc);
-
- zfx->inbufsize = 2048;
- zfx->inbuf = xmalloc( zfx->inbufsize );
- bzs->avail_in = 0;
-}
-
-static int
-do_uncompress( compress_filter_context_t *zfx, bz_stream *bzs,
- IOBUF a, size_t *ret_len )
-{
- int zrc;
- int rc=0;
- size_t n;
- int nread, count;
- int refill = !bzs->avail_in;
-
- if( DBG_FILTER )
- log_debug("begin bzDecompress: avail_in=%u, avail_out=%u, inbuf=%u\n",
- (unsigned)bzs->avail_in, (unsigned)bzs->avail_out,
- (unsigned)zfx->inbufsize );
- do
- {
- if( bzs->avail_in < zfx->inbufsize && refill )
- {
- n = bzs->avail_in;
- if( !n )
- bzs->next_in = zfx->inbuf;
- count = zfx->inbufsize - n;
- nread = iobuf_read( a, zfx->inbuf + n, count );
- if( nread == -1 ) nread = 0;
- n += nread;
- bzs->avail_in = n;
- }
-
- refill = 1;
-
- if( DBG_FILTER )
- log_debug("enter bzDecompress: avail_in=%u, avail_out=%u\n",
- (unsigned)bzs->avail_in, (unsigned)bzs->avail_out);
-
- zrc=BZ2_bzDecompress(bzs);
- if( DBG_FILTER )
- log_debug("leave bzDecompress: avail_in=%u, avail_out=%u, zrc=%d\n",
- (unsigned)bzs->avail_in, (unsigned)bzs->avail_out, zrc);
- if( zrc == BZ_STREAM_END )
- rc = -1; /* eof */
- else if( zrc != BZ_OK && zrc != BZ_PARAM_ERROR )
- log_fatal("bz2lib inflate problem: rc=%d\n", zrc );
- }
- while( bzs->avail_out && zrc != BZ_STREAM_END && zrc != BZ_PARAM_ERROR );
-
- /* I'm not completely happy with the two uses of BZ_PARAM_ERROR
- here. The corresponding zlib function is Z_BUF_ERROR, which
- covers a narrower scope than BZ_PARAM_ERROR. -dshaw */
-
- *ret_len = zfx->outbufsize - bzs->avail_out;
- if( DBG_FILTER )
- log_debug("do_uncompress: returning %u bytes\n", (unsigned)*ret_len );
- return rc;
-}
-
-int
-compress_filter_bz2( void *opaque, int control,
- IOBUF a, byte *buf, size_t *ret_len)
-{
- size_t size = *ret_len;
- compress_filter_context_t *zfx = opaque;
- bz_stream *bzs = zfx->opaque;
- int rc=0;
-
- if( control == IOBUFCTRL_UNDERFLOW )
- {
- if( !zfx->status )
- {
- bzs = zfx->opaque = xmalloc_clear( sizeof *bzs );
- init_uncompress( zfx, bzs );
- zfx->status = 1;
- }
-
- bzs->next_out = buf;
- bzs->avail_out = size;
- zfx->outbufsize = size; /* needed only for calculation */
- rc = do_uncompress( zfx, bzs, a, ret_len );
- }
- else if( control == IOBUFCTRL_FLUSH )
- {
- if( !zfx->status )
- {
- PACKET pkt;
- PKT_compressed cd;
-
- if( zfx->algo != COMPRESS_ALGO_BZIP2 )
- BUG();
- memset( &cd, 0, sizeof cd );
- cd.len = 0;
- cd.algorithm = zfx->algo;
- init_packet( &pkt );
- pkt.pkttype = PKT_COMPRESSED;
- pkt.pkt.compressed = &cd;
- if( build_packet( a, &pkt ))
- log_bug("build_packet(PKT_COMPRESSED) failed\n");
- bzs = zfx->opaque = xmalloc_clear( sizeof *bzs );
- init_compress( zfx, bzs );
- zfx->status = 2;
- }
-
- bzs->next_in = buf;
- bzs->avail_in = size;
- rc = do_compress( zfx, bzs, BZ_RUN, a );
- }
- else if( control == IOBUFCTRL_FREE )
- {
- if( zfx->status == 1 )
- {
- BZ2_bzDecompressEnd(bzs);
- xfree(bzs);
- zfx->opaque = NULL;
- xfree(zfx->outbuf); zfx->outbuf = NULL;
- }
- else if( zfx->status == 2 )
- {
- bzs->next_in = buf;
- bzs->avail_in = 0;
- do_compress( zfx, bzs, BZ_FINISH, a );
- BZ2_bzCompressEnd(bzs);
- xfree(bzs);
- zfx->opaque = NULL;
- xfree(zfx->outbuf); zfx->outbuf = NULL;
- }
- if (zfx->release)
- zfx->release (zfx);
- }
- else if( control == IOBUFCTRL_DESC )
- *(char**)buf = "compress_filter";
- return rc;
-}
generated by cgit (git 2.51.2) at 2025-11-19 23:26:28 +0000