HTP  0.3
htp_decompressors.h
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00001 /***************************************************************************
00002  * Copyright (c) 2009-2010, Open Information Security Foundation
00003  * Copyright (c) 2009-2012, Qualys, Inc.
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00005  * 
00006  * Redistribution and use in source and binary forms, with or without
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00010  * * Redistributions of source code must retain the above copyright
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00012  * * Redistributions in binary form must reproduce the above copyright
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00015  * * Neither the name of the Qualys, Inc. nor the names of its
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00031 
00037 #ifndef _HTP_DECOMPRESSORS_H
00038 #define _HTP_DECOMPRESSORS_H
00039 
00040 typedef struct htp_decompressor_gzip_t htp_decompressor_gzip_t;
00041 typedef struct htp_decompressor_t htp_decompressor_t;
00042 
00043 #include "zlib.h"
00044 
00045 #define GZIP_BUF_SIZE       8192
00046 #define GZIP_WINDOW_SIZE    -15
00047 
00048 #define DEFLATE_MAGIC_1     0x1f
00049 #define DEFLATE_MAGIC_2     0x8b
00050 
00051 #define COMPRESSION_NONE        0
00052 #define COMPRESSION_GZIP        1
00053 #define COMPRESSION_DEFLATE     2
00054 
00055 #ifdef __cplusplus
00056 extern "C" {
00057 #endif
00058 
00059 struct htp_decompressor_t {
00060     int (*decompress)(htp_decompressor_t *, htp_tx_data_t *);
00061     int (*callback)(htp_tx_data_t *);
00062     void (*destroy)(htp_decompressor_t *);
00063 };
00064 
00065 struct htp_decompressor_gzip_t {
00066     htp_decompressor_t super;
00067     int initialized;
00068     int zlib_initialized;
00069     uint8_t header[10];
00070     uint8_t header_len;
00071     z_stream stream;
00072     unsigned char *buffer;
00073     unsigned long crc;    
00074 };
00075 
00076 htp_decompressor_t * htp_gzip_decompressor_create(htp_connp_t *connp, int format);
00077 
00078 #ifdef __cplusplus
00079 }
00080 #endif
00081 
00082 #endif  /* _HTP_DECOMPRESSORS_H */
00083