mirror of
https://github.com/moparisthebest/spdylay
synced 2024-11-16 06:25:04 -05:00
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*
|
|
* Spdylay - SPDY Library
|
|
*
|
|
* Copyright (c) 2012 Tatsuhiro Tsujikawa
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
#include "spdylay_gzip.h"
|
|
|
|
#include <assert.h>
|
|
|
|
int spdylay_gzip_inflate_new(spdylay_gzip **inflater_ptr)
|
|
{
|
|
int rv;
|
|
*inflater_ptr = malloc(sizeof(spdylay_gzip));
|
|
if(*inflater_ptr == NULL) {
|
|
return SPDYLAY_ERR_NOMEM;
|
|
}
|
|
(*inflater_ptr)->zst.next_in = Z_NULL;
|
|
(*inflater_ptr)->zst.avail_in = 0;
|
|
(*inflater_ptr)->zst.zalloc = Z_NULL;
|
|
(*inflater_ptr)->zst.zfree = Z_NULL;
|
|
(*inflater_ptr)->zst.opaque = Z_NULL;
|
|
rv = inflateInit2(&(*inflater_ptr)->zst, 47);
|
|
if(rv != Z_OK) {
|
|
free(*inflater_ptr);
|
|
return SPDYLAY_ERR_GZIP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void spdylay_gzip_inflate_del(spdylay_gzip *inflater)
|
|
{
|
|
if(inflater != NULL) {
|
|
inflateEnd(&inflater->zst);
|
|
free(inflater);
|
|
}
|
|
}
|
|
|
|
int spdylay_gzip_inflate(spdylay_gzip *inflater,
|
|
uint8_t *out, size_t *outlen_ptr,
|
|
const uint8_t *in, size_t *inlen_ptr)
|
|
{
|
|
int rv;
|
|
inflater->zst.avail_in = *inlen_ptr;
|
|
inflater->zst.next_in = (unsigned char*)in;
|
|
inflater->zst.avail_out = *outlen_ptr;
|
|
inflater->zst.next_out = out;
|
|
|
|
rv = inflate(&inflater->zst, Z_NO_FLUSH);
|
|
|
|
*inlen_ptr -= inflater->zst.avail_in;
|
|
*outlen_ptr -= inflater->zst.avail_out;
|
|
switch(rv) {
|
|
case Z_OK:
|
|
case Z_STREAM_END:
|
|
case Z_BUF_ERROR:
|
|
return 0;
|
|
case Z_DATA_ERROR:
|
|
case Z_STREAM_ERROR:
|
|
case Z_NEED_DICT:
|
|
case Z_MEM_ERROR:
|
|
return SPDYLAY_ERR_GZIP;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|