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https://github.com/ZeroTier/ZeroTierOne
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Upgrade LZ4, remove extraneous files, put tap-mac into ext/ to declutter root.
This commit is contained in:
Adam Ierymenko
parent
9455b1cc81
commit
6b8c90bffd
33 changed files with 815 additions and 1952 deletions
145
ext/lz4/lz4.h
145
ext/lz4/lz4.h
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@ -1,7 +1,7 @@
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/*
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LZ4 - Fast LZ compression algorithm
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Header File
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Copyright (C) 2011-2012, Yann Collet.
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Copyright (C) 2011-2013, Yann Collet.
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BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
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Redistribution and use in source and binary forms, with or without
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@ -42,7 +42,7 @@ extern "C" {
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// Compiler Options
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//**************************************
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#if defined(_MSC_VER) && !defined(__cplusplus) // Visual Studio
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# define inline __inline // Visual is not C99, but supports some kind of inline
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# define inline __inline // Visual C is not C99, but supports some kind of inline
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#endif
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@ -50,78 +50,155 @@ extern "C" {
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// Simple Functions
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//****************************
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int LZ4_compress (const char* source, char* dest, int isize);
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int LZ4_uncompress (const char* source, char* dest, int osize);
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int LZ4_compress (const char* source, char* dest, int inputSize);
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int LZ4_decompress_safe (const char* source, char* dest, int inputSize, int maxOutputSize);
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/*
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LZ4_compress() :
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Compresses 'isize' bytes from 'source' into 'dest'.
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Compresses 'inputSize' bytes from 'source' into 'dest'.
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Destination buffer must be already allocated,
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and must be sized to handle worst cases situations (input data not compressible)
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Worst case size evaluation is provided by function LZ4_compressBound()
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isize : is the input size. Max supported value is ~1.9GB
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inputSize : Max supported value is LZ4_MAX_INPUT_VALUE
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return : the number of bytes written in buffer dest
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or 0 if the compression fails
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LZ4_uncompress() :
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osize : is the output size, therefore the original size
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return : the number of bytes read in the source buffer
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If the source stream is malformed, the function will stop decoding and return a negative result, indicating the byte position of the faulty instruction
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This function never writes outside of provided buffers, and never modifies input buffer.
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note : destination buffer must be already allocated.
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its size must be a minimum of 'osize' bytes.
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LZ4_decompress_safe() :
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maxOutputSize : is the size of the destination buffer (which must be already allocated)
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return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)
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If the source stream is detected malformed, the function will stop decoding and return a negative result.
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This function is protected against buffer overflow exploits (never writes outside of output buffer, and never reads outside of input buffer). Therefore, it is protected against malicious data packets
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*/
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//****************************
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// Advanced Functions
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//****************************
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static inline int LZ4_compressBound(int isize) { return ((isize) + ((isize)/255) + 16); }
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#define LZ4_COMPRESSBOUND( isize) ((isize) + ((isize)/255) + 16)
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#define LZ4_MAX_INPUT_SIZE 0x7E000000 // 2 113 929 216 bytes
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#define LZ4_COMPRESSBOUND(isize) ((unsigned int)(isize) > (unsigned int)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)
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static inline int LZ4_compressBound(int isize) { return LZ4_COMPRESSBOUND(isize); }
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/*
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LZ4_compressBound() :
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Provides the maximum size that LZ4 may output in a "worst case" scenario (input data not compressible)
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primarily useful for memory allocation of output buffer.
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inline function is recommended for the general case,
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but macro is also provided when results need to be evaluated at compile time (such as table size allocation).
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inline function is recommended for the general case,
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macro is also provided when result needs to be evaluated at compilation (such as stack memory allocation).
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isize : is the input size. Max supported value is ~1.9GB
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isize : is the input size. Max supported value is LZ4_MAX_INPUT_SIZE
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return : maximum output size in a "worst case" scenario
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note : this function is limited by "int" range (2^31-1)
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or 0, if input size is too large ( > LZ4_MAX_INPUT_SIZE)
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*/
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int LZ4_compress_limitedOutput (const char* source, char* dest, int isize, int maxOutputSize);
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int LZ4_compress_limitedOutput (const char* source, char* dest, int inputSize, int maxOutputSize);
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/*
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LZ4_compress_limitedOutput() :
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Compress 'isize' bytes from 'source' into an output buffer 'dest' of maximum size 'maxOutputSize'.
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Compress 'inputSize' bytes from 'source' into an output buffer 'dest' of maximum size 'maxOutputSize'.
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If it cannot achieve it, compression will stop, and result of the function will be zero.
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This function never writes outside of provided output buffer.
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isize : is the input size. Max supported value is ~1.9GB
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inputSize : Max supported value is LZ4_MAX_INPUT_VALUE
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maxOutputSize : is the size of the destination buffer (which must be already allocated)
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return : the number of bytes written in buffer 'dest'
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or 0 if the compression fails
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*/
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int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize);
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int LZ4_decompress_fast (const char* source, char* dest, int outputSize);
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/*
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LZ4_uncompress_unknownOutputSize() :
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isize : is the input size, therefore the compressed size
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maxOutputSize : is the size of the destination buffer (which must be already allocated)
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return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)
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If the source stream is malformed, the function will stop decoding and return a negative result, indicating the byte position of the faulty instruction
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This function never writes beyond dest + maxOutputSize, and is therefore protected against malicious data packets
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note : Destination buffer must be already allocated.
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This version is slightly slower than LZ4_uncompress()
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LZ4_decompress_fast() :
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outputSize : is the original (uncompressed) size
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return : the number of bytes read from the source buffer (in other words, the compressed size)
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If the source stream is malformed, the function will stop decoding and return a negative result.
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note : This function is a bit faster than LZ4_decompress_safe()
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This function never writes outside of output buffers, but may read beyond input buffer in case of malicious data packet.
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Use this function preferably into a trusted environment (data to decode comes from a trusted source).
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Destination buffer must be already allocated. Its size must be a minimum of 'outputSize' bytes.
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*/
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int LZ4_decompress_safe_partial (const char* source, char* dest, int inputSize, int targetOutputSize, int maxOutputSize);
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/*
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LZ4_decompress_safe_partial() :
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This function decompress a compressed block of size 'inputSize' at position 'source'
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into output buffer 'dest' of size 'maxOutputSize'.
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The function tries to stop decompressing operation as soon as 'targetOutputSize' has been reached,
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reducing decompression time.
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return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)
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Note : this number can be < 'targetOutputSize' should the compressed block to decode be smaller.
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Always control how many bytes were decoded.
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If the source stream is detected malformed, the function will stop decoding and return a negative result.
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This function never writes outside of output buffer, and never reads outside of input buffer. It is therefore protected against malicious data packets
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*/
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//****************************
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// Stream Functions
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//****************************
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void* LZ4_create (const char* inputBuffer);
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int LZ4_compress_continue (void* LZ4_Data, const char* source, char* dest, int inputSize);
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int LZ4_compress_limitedOutput_continue (void* LZ4_Data, const char* source, char* dest, int inputSize, int maxOutputSize);
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char* LZ4_slideInputBuffer (void* LZ4_Data);
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int LZ4_free (void* LZ4_Data);
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/*
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These functions allow the compression of dependent blocks, where each block benefits from prior 64 KB within preceding blocks.
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In order to achieve this, it is necessary to start creating the LZ4 Data Structure, thanks to the function :
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void* LZ4_create (const char* inputBuffer);
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The result of the function is the (void*) pointer on the LZ4 Data Structure.
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This pointer will be needed in all other functions.
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If the pointer returned is NULL, then the allocation has failed, and compression must be aborted.
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The only parameter 'const char* inputBuffer' must, obviously, point at the beginning of input buffer.
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The input buffer must be already allocated, and size at least 192KB.
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'inputBuffer' will also be the 'const char* source' of the first block.
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All blocks are expected to lay next to each other within the input buffer, starting from 'inputBuffer'.
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To compress each block, use either LZ4_compress_continue() or LZ4_compress_limitedOutput_continue().
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Their behavior are identical to LZ4_compress() or LZ4_compress_limitedOutput(),
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but require the LZ4 Data Structure as their first argument, and check that each block starts right after the previous one.
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If next block does not begin immediately after the previous one, the compression will fail (return 0).
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When it's no longer possible to lay the next block after the previous one (not enough space left into input buffer), a call to :
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char* LZ4_slideInputBuffer(void* LZ4_Data);
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must be performed. It will typically copy the latest 64KB of input at the beginning of input buffer.
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Note that, for this function to work properly, minimum size of an input buffer must be 192KB.
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==> The memory position where the next input data block must start is provided as the result of the function.
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Compression can then resume, using LZ4_compress_continue() or LZ4_compress_limitedOutput_continue(), as usual.
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When compression is completed, a call to LZ4_free() will release the memory used by the LZ4 Data Structure.
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*/
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int LZ4_decompress_safe_withPrefix64k (const char* source, char* dest, int inputSize, int maxOutputSize);
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int LZ4_decompress_fast_withPrefix64k (const char* source, char* dest, int outputSize);
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/*
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*_withPrefix64k() :
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These decoding functions work the same as their "normal name" versions,
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but can use up to 64KB of data in front of 'char* dest'.
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These functions are necessary to decode inter-dependant blocks.
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*/
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//****************************
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// Obsolete Functions
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//****************************
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static inline int LZ4_uncompress (const char* source, char* dest, int outputSize) { return LZ4_decompress_fast(source, dest, outputSize); }
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static inline int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize) { return LZ4_decompress_safe(source, dest, isize, maxOutputSize); }
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/*
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These functions are deprecated and should no longer be used.
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They are provided here for compatibility with existing user programs.
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*/
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#if defined (__cplusplus)
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}
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