00001 /*************************************************************************** 00002 * Copyright (c) 2009-2010 Open Information Security Foundation 00003 * Copyright (c) 2010-2013 Qualys, Inc. 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions are 00008 * met: 00009 * 00010 * - Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 00013 * - Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in the 00015 * documentation and/or other materials provided with the distribution. 00016 00017 * - Neither the name of the Qualys, Inc. nor the names of its 00018 * contributors may be used to endorse or promote products derived from 00019 * this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00024 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00025 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00027 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00028 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00029 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00030 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00031 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 ***************************************************************************/ 00033 00039 #ifndef _HTP_DECOMPRESSORS_H 00040 #define _HTP_DECOMPRESSORS_H 00041 00042 #ifdef __cplusplus 00043 extern "C" { 00044 #endif 00045 00046 #include <zlib.h> 00047 00048 typedef struct htp_decompressor_gzip_t htp_decompressor_gzip_t; 00049 typedef struct htp_decompressor_t htp_decompressor_t; 00050 00051 #define GZIP_BUF_SIZE 8192 00052 00053 #define DEFLATE_MAGIC_1 0x1f 00054 #define DEFLATE_MAGIC_2 0x8b 00055 00056 struct htp_decompressor_t { 00057 htp_status_t (*decompress)(htp_decompressor_t *, htp_tx_data_t *); 00058 htp_status_t (*callback)(htp_tx_data_t *); 00059 void (*destroy)(htp_decompressor_t *); 00060 struct htp_decompressor_t *next; 00061 }; 00062 00063 struct htp_decompressor_gzip_t { 00064 htp_decompressor_t super; 00065 #if 0 00066 int initialized; 00067 #endif 00068 int zlib_initialized; 00069 uint8_t header[10]; 00070 uint8_t header_len; 00071 uint8_t restart; 00072 uint8_t passthrough; 00073 z_stream stream; 00074 unsigned char *buffer; 00075 unsigned long crc; 00076 }; 00077 00078 htp_decompressor_t *htp_gzip_decompressor_create(htp_connp_t *connp, enum htp_content_encoding_t format); 00079 00080 #ifdef __cplusplus 00081 } 00082 #endif 00083 00084 #endif /* _HTP_DECOMPRESSORS_H */ 00085