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/*****************************************************************************/ /* gzip.h */ /*****************************************************************************/ #ifndef GZIP_COMPRESS_DEFINED #define GZIP_COMPRESS_DEFINED /******************************/ /* define WASD GZIP structure */ /******************************/ /* this structure is especially included by WASD.H and PROXYSTRUCT.H */ #define BOOL int typedef struct GzipCompressStruct GZIP_COMPRESS; struct GzipCompressStruct { BOOL DeflateEndOfStream, DeflateFlushStream, DeflateStartStream, InflateEndOfStream, InflateStartStream; int DeflateBufferCount, DeflateBufferSize, DeflateBytesIn, DeflateBytesOut, DeflateMemoryAllocated, FlushBytesOut, FlushTickSeconds, InflateAvailIn, InflateBufferCount, InflateBufferSize, InflateBytesIn, InflateBytesOut, InflateMemoryAllocated; char *DeflateBufferPtr, *InflateBufferPtr; void *DeflateZstreamPtr, *InflateZstreamPtr; }; /***********************************/ /* WASD GZIP structure now defined */ /***********************************/ #endif /* GZIP_COMPRESS_DEFINED */ #ifndef GZIP_COMPRESS_ONLY #ifndef GZIP_H_LOADED #define GZIP_H_LOADED 1 /* number of bytes in the GZIP stream header */ #define GZIP_SIZE_OF_HEADER 10 /* minimum size in bytes before worrying about deflating */ #define GZIP_MIN_CONTENT_LENGTH 1400 /* maximum interval between GZIP buffer flushes (actual output) */ #define GZIP_DEFAULT_FLUSH_SECONDS 15 /* interval before initial GZIP buffer flush (get some output out there!) */ #define GZIP_INITIAL_FLUSH_SECONDS 3 /*********************/ /* ZLIB requirements */ /*********************/ /** Sufficient of ZLIB to build an interface to the shareable image. These (needless-to-say) have been (more-or-less) lifted from ZLIB.H version 1.2.1, November 17th, 2003 Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler **/ typedef struct z_stream_s { char *next_in; /* next input byte */ unsigned int avail_in; /* number of bytes available at next_in */ unsigned long total_in; /* total nb of input bytes read so far */ char *next_out; /* next output byte should be put there */ unsigned int avail_out; /* remaining free space at next_out */ unsigned long total_out; /* total nb of bytes output so far */ char *msg; /* last error message, NULL if no error */ void *state; /* not visible by applications */ void *zalloc; /* used to allocate the internal state */ void *zfree; /* used to free the internal state */ void *opaque; /* private data passed to zalloc and zfree */ int data_type; /* best guess on data type: ascii or binary */ unsigned long adler; /* adler32 value of the uncompressed data */ unsigned long reserved; /* reserved for future use */ } z_stream; #define ZLIB_VERSION "1.2.1" #define Z_DEFAULT_COMPRESSION (-1) #define Z_DEFAULT_STRATEGY 0 #define Z_DEFLATED 8 #define Z_NO_FLUSH 0 #define Z_SYNC_FLUSH 2 #define Z_FULL_FLUSH 3 #define Z_FINISH 4 #define Z_OK 0 #define Z_STREAM_END 1 #define Z_NEED_DICT 2 #define Z_ERRNO (-1) #define Z_STREAM_ERROR (-2) #define Z_DATA_ERROR (-3) #define Z_MEM_ERROR (-4) #define Z_BUF_ERROR (-5) #define Z_VERSION_ERROR (-6) /***********************/ /* function prototypes */ /***********************/ int GzipInit (); int GzipInitHandler (); BOOL GzipDeflate (REQUEST_STRUCT*, GZIP_COMPRESS*, char**, int*, char**, int*); BOOL GzipDeflateBegin (REQUEST_STRUCT*, GZIP_COMPRESS*, int); BOOL GzipDeflateCache (REQUEST_STRUCT*, FILE_CENTRY*); BOOL GzipDeflateEnd (REQUEST_STRUCT*, GZIP_COMPRESS*); BOOL GzipShouldDeflate (REQUEST_STRUCT*, char*, int); BOOL GzipInflate (REQUEST_STRUCT*, GZIP_COMPRESS*, char**, int*); BOOL GzipInflateBegin (REQUEST_STRUCT*, GZIP_COMPRESS*, int); BOOL GzipInflateEnd (REQUEST_STRUCT*, GZIP_COMPRESS*); char* GzipZlibMsg (z_stream*, int); char* GzipAlloc (REQUEST_STRUCT*, int, int); GzipFree (REQUEST_STRUCT*, char*); #endif /* GZIP_H_LOADED */ #endif /* GZIP_COMPRESS_ONLY */ /*****************************************************************************/