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/* compressed.c - process an compressed packet
* Copyright (c) 1997 by Werner Koch (dd9jn)
*
* This file is part of G10.
*
* G10 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.
*
* G10 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
/*#include <zlib.h>*/
#include "util.h"
#include "memory.h"
#include "packet.h"
/****************
* Handle a compressed packet
*/
int
handle_compressed( PKT_compressed *zd )
{
return -1;
#if 0
int c, zrc, rc = 0;
z_stream *zs = NULL;
unsigned inbufsize = 4096;
unsigned outbufsize = 16384;
unsigned n;
byte *inbuf = NULL;
byte *outbuf = NULL;
if( zd->algorithm != 1 ) {
rc =G10ERR_COMPR_ALGO;
goto leave;
}
zs = m_alloc_clear( sizeof *zs );
if( (zrc = inflateInit( zs )) != Z_OK ) {
log_fatal("zlib problem: %s\n", zs->msg? zs->msg :
zrc == Z_MEM_ERROR ? "out of core" :
zrc == Z_VERSION_ERROR ? "invalid lib version" :
"unknown error" );
}
inbuf = m_alloc( inbufsize );
outbuf = m_alloc( outbufsize ); /* Fixme: put it in secure space? */
zs->next_in = inbuf;
zs->avail_in = inbufsize;
zs->next_out = outbuf;
zs->avail_out = outbufsize;
n = 0;
inbuf[n++] = 0x58;
inbuf[n++] = 0x09;
for(; n < inbufsize && (c=iobuf_get(zd->buf)) != -1 ; n++ )
inbuf[n] = c;
if( n ) {
{ int i;
printf("start of compressed packet (n=%u):\n", n);
for(i=0; i < 32 && i < n; i++ )
printf(" %02x", inbuf[i] );
putchar('\n');
}
zrc = inflate( zs, Z_PARTIAL_FLUSH );
switch( zrc ) {
case Z_OK:
log_info("inflate returned okay\n");
break;
case Z_STREAM_END:
log_info("inflate returned stream-end\n");
break;
case Z_NEED_DICT:
case Z_DATA_ERROR:
case Z_STREAM_ERROR:
case Z_MEM_ERROR:
case Z_BUF_ERROR:
default:
if( zs->msg )
log_error("zlib inflate problem: %s\n", zs->msg );
else
log_error("zlib inflate problem: rc=%d\n", zrc );
break;
}
}
leave:
if( zs ) {
inflateEnd(zs);
m_free(zs);
}
m_free(inbuf);
m_free(outbuf);
return rc;
#endif
}
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