Streaming Buffer API. More...

#include "suricata-common.h"
#include "util-streaming-buffer.h"
#include "util-unittest.h"
#include "util-print.h"
#include "util-validate.h"

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Macros
#define	MALLOC(cfg, s) (cfg)->Malloc ? (cfg)->Malloc((s)) : SCMalloc((s))

#define	CALLOC(cfg, n, s) (cfg)->Calloc ? (cfg)->Calloc((n), (s)) : SCCalloc((n), (s))

#define	REALLOC(cfg, ptr, orig_s, s) (cfg)->Realloc ? (cfg)->Realloc((ptr), (orig_s), (s)) : SCRealloc((ptr), (s))

#define	FREE(cfg, ptr, s) (cfg)->Free ? (cfg)->Free((ptr), (s)) : SCFree((ptr))

#define	DATA_FITS(sb, len) ((sb)->buf_offset + (len) <= (sb)->buf_size)

#define	DATA_FITS_AT_OFFSET(sb, len, offset) ((offset) + (len) <= (sb)->buf_size)

Functions
	RB_GENERATE (SBB, StreamingBufferBlock, rb, SBBCompare)

int	SBBCompare (struct StreamingBufferBlock a, struct StreamingBufferBlock b)

StreamingBufferBlock *	SBB_RB_FIND_INCLUSIVE (struct SBB head, StreamingBufferBlock elm)

StreamingBuffer *	StreamingBufferInit (const StreamingBufferConfig *cfg)

void	StreamingBufferClear (StreamingBuffer *sb)

void	StreamingBufferFree (StreamingBuffer *sb)

void	StreamingBufferSlideToOffset (StreamingBuffer *sb, uint64_t offset)
	slide to absolute offset More...

void	StreamingBufferSlide (StreamingBuffer *sb, uint32_t slide)

StreamingBufferSegment *	StreamingBufferAppendRaw (StreamingBuffer sb, const uint8_t data, uint32_t data_len)

int	StreamingBufferAppend (StreamingBuffer sb, StreamingBufferSegment seg, const uint8_t *data, uint32_t data_len)

int	StreamingBufferAppendNoTrack (StreamingBuffer sb, const uint8_t data, uint32_t data_len)
	add data w/o tracking a segment More...

int	StreamingBufferInsertAt (StreamingBuffer sb, StreamingBufferSegment seg, const uint8_t *data, uint32_t data_len, uint64_t offset)

int	StreamingBufferSegmentIsBeforeWindow (const StreamingBuffer sb, const StreamingBufferSegment seg)

void	StreamingBufferSBBGetData (const StreamingBuffer sb, const StreamingBufferBlock sbb, const uint8_t *data, uint32_t data_len)
	get the data for one SBB More...

void	StreamingBufferSBBGetDataAtOffset (const StreamingBuffer sb, const StreamingBufferBlock sbb, const uint8_t *data, uint32_t data_len, uint64_t offset)
	get the data for one SBB More...

void	StreamingBufferSegmentGetData (const StreamingBuffer sb, const StreamingBufferSegment seg, const uint8_t *data, uint32_t data_len)

int	StreamingBufferSegmentCompareRawData (const StreamingBuffer sb, const StreamingBufferSegment seg, const uint8_t *rawdata, uint32_t rawdata_len)

int	StreamingBufferGetData (const StreamingBuffer sb, const uint8_t data, uint32_t data_len, uint64_t *stream_offset)

int	StreamingBufferGetDataAtOffset (const StreamingBuffer sb, const uint8_t data, uint32_t data_len, uint64_t offset)

int	StreamingBufferCompareRawData (const StreamingBuffer sb, const uint8_t rawdata, uint32_t rawdata_len)

void	StreamingBufferRegisterTests (void)

Detailed Description

Streaming Buffer API.

Author: Victor Julien victo.nosp@m.r@in.nosp@m.linia.nosp@m.c.ne.nosp@m.t

Definition in file util-streaming-buffer.c.

Macro Definition Documentation

#define CALLOC	(	cfg,
		n,
		s
	)	(cfg)->Calloc ? (cfg)->Calloc((n), (s)) : SCCalloc((n), (s))

Definition at line 36 of file util-streaming-buffer.c.

Referenced by SBB_RB_FIND_INCLUSIVE(), StreamingBufferAppendRaw(), StreamingBufferFree(), and StreamingBufferInit().

#define DATA_FITS	(	sb,
		len
	)	((sb)->buf_offset + (len) <= (sb)->buf_size)

Definition at line 532 of file util-streaming-buffer.c.

Referenced by StreamingBufferAppend(), StreamingBufferAppendNoTrack(), and StreamingBufferAppendRaw().

#define DATA_FITS_AT_OFFSET	(	sb,
		len,
		offset
	)	((offset) + (len) <= (sb)->buf_size)

Definition at line 655 of file util-streaming-buffer.c.

Referenced by StreamingBufferInsertAt().

#define FREE	(	cfg,
		ptr,
		s
	)	(cfg)->Free ? (cfg)->Free((ptr), (s)) : SCFree((ptr))

Definition at line 40 of file util-streaming-buffer.c.

Referenced by StreamingBufferClear(), StreamingBufferFree(), and StreamingBufferInit().

#define MALLOC	(	cfg,
		s
	)	(cfg)->Malloc ? (cfg)->Malloc((s)) : SCMalloc((s))

Definition at line 34 of file util-streaming-buffer.c.

#define REALLOC	(	cfg,
		ptr,
		orig_s,
		s
	)	(cfg)->Realloc ? (cfg)->Realloc((ptr), (orig_s), (s)) : SCRealloc((ptr), (s))

Definition at line 38 of file util-streaming-buffer.c.

Referenced by StreamingBufferFree().

Function Documentation

RB_GENERATE	(	SBB	,
		StreamingBufferBlock	,
		rb	,
		SBBCompare
	)

StreamingBufferBlock* SBB_RB_FIND_INCLUSIVE	(	struct SBB *	head,
		StreamingBufferBlock *	elm
	)

Definition at line 79 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBufferConfig_::buf_size, StreamingBuffer_::buf_size, CALLOC, StreamingBuffer_::cfg, StreamingBufferBlock::len, StreamingBufferBlock::offset, RB_LEFT, RB_RIGHT, RB_ROOT, res, and SCLogDebug.

Referenced by StreamReassembleRawUpdateProgress(), and StreamTcpReassembleAppLayer().

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int SBBCompare	(	struct StreamingBufferBlock *	a,
		struct StreamingBufferBlock *	b
	)

Definition at line 47 of file util-streaming-buffer.c.

References StreamingBufferBlock::len, StreamingBufferBlock::offset, offset, SCLogDebug, and SCReturnInt.

int StreamingBufferAppend	(	StreamingBuffer *	sb,
		StreamingBufferSegment *	seg,
		const uint8_t *	data,
		uint32_t	data_len
	)

Definition at line 576 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, StreamingBuffer_::buf_size, BUG_ON, StreamingBuffer_::cfg, DATA_FITS, StreamingBufferConfig_::flags, RB_EMPTY, StreamingBuffer_::sbb_tree, StreamingBuffer_::stream_offset, and STREAMING_BUFFER_AUTOSLIDE.

Referenced by HtpBodyAppendChunk(), StreamingBufferCompareRawData(), and UTHAddStreamToFlow().

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int StreamingBufferAppendNoTrack	(	StreamingBuffer *	sb,
		const uint8_t *	data,
		uint32_t	data_len
	)

add data w/o tracking a segment

Definition at line 619 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, StreamingBuffer_::buf_size, StreamingBuffer_::cfg, DATA_FITS, StreamingBufferConfig_::flags, RB_EMPTY, StreamingBuffer_::sbb_tree, and STREAMING_BUFFER_AUTOSLIDE.

Referenced by FileContainerSetTx().

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StreamingBufferSegment* StreamingBufferAppendRaw	(	StreamingBuffer *	sb,
		const uint8_t *	data,
		uint32_t	data_len
	)

Definition at line 535 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, StreamingBuffer_::buf_size, CALLOC, StreamingBuffer_::cfg, DATA_FITS, StreamingBufferConfig_::flags, RB_EMPTY, StreamingBuffer_::sbb_tree, StreamingBuffer_::stream_offset, and STREAMING_BUFFER_AUTOSLIDE.

Referenced by StreamingBufferCompareRawData().

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void StreamingBufferClear ( StreamingBuffer * sb )

Definition at line 132 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_size, StreamingBuffer_::cfg, FREE, and SCLogDebug.

Referenced by StreamingBufferCompareRawData(), StreamingBufferFree(), StreamTcpPruneSession(), and StreamTcpStreamCleanup().

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int StreamingBufferCompareRawData	(	const StreamingBuffer *	sb,
		const uint8_t *	rawdata,
		uint32_t	rawdata_len
	)

Return values

1	data is the same
0	data is different

Definition at line 889 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, StreamingBuffer_::buf_size, FAIL_IF, FAIL_IF_NOT, FAIL_IF_NULL, StreamingBuffer_::head, StreamingBufferBlock::len, StreamingBufferBlock::offset, offset, PASS, PrintRawDataFp(), RB_EMPTY, RB_MIN, StreamingBuffer_::sbb_tree, SCFree, SCLogDebug, StreamingBuffer_::stream_offset, STREAMING_BUFFER_AUTOSLIDE, STREAMING_BUFFER_INITIALIZER, StreamingBufferAppend(), StreamingBufferAppendRaw(), StreamingBufferClear(), StreamingBufferFree(), StreamingBufferGetData(), StreamingBufferInit(), StreamingBufferInsertAt(), StreamingBufferSegmentCompareRawData(), StreamingBufferSegmentGetData(), StreamingBufferSegmentIsBeforeWindow(), and StreamingBufferSlide().

Referenced by HTPFileClose(), SMTPParserCleanup(), and StreamTcpCheckStreamContents().

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void StreamingBufferFree ( StreamingBuffer * sb )

Definition at line 145 of file util-streaming-buffer.c.

References __attribute__, StreamingBuffer_::buf, StreamingBuffer_::buf_offset, StreamingBufferConfig_::buf_size, StreamingBuffer_::buf_size, StreamingBufferConfig_::buf_slide, BUG_ON, CALLOC, StreamingBuffer_::cfg, DEBUG_VALIDATE_BUG_ON, FREE, StreamingBuffer_::head, StreamingBufferBlock::len, len, next, StreamingBufferBlock::offset, offset, RB_EMPTY, RB_FOREACH, RB_FOREACH_FROM, RB_FOREACH_REVERSE_FROM, RB_FOREACH_SAFE, REALLOC, res, StreamingBuffer_::sbb_tree, SCLogDebug, StreamingBuffer_::stream_offset, and StreamingBufferClear().

Referenced by FileContainerFree(), HtpBodyFree(), and StreamingBufferCompareRawData().

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int StreamingBufferGetData	(	const StreamingBuffer *	sb,
		const uint8_t **	data,
		uint32_t *	data_len,
		uint64_t *	stream_offset
	)

Definition at line 849 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, and StreamingBuffer_::stream_offset.

Referenced by DetectFilemagicRegister(), StreamingBufferCompareRawData(), StreamReassembleRawUpdateProgress(), StreamTcpReassembleAppLayer(), and TcpSegmentCompare().

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int StreamingBufferGetDataAtOffset	(	const StreamingBuffer *	sb,
		const uint8_t **	data,
		uint32_t *	data_len,
		uint64_t	offset
	)

Definition at line 866 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, and StreamingBuffer_::stream_offset.

Referenced by DetectHttpClientBodyRegister(), OutputRegisterFiledataLogger(), StreamNeedsReassembly(), and StreamTcpReassembleAppLayer().

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StreamingBuffer* StreamingBufferInit ( const StreamingBufferConfig * cfg )

Definition at line 112 of file util-streaming-buffer.c.

References StreamingBufferConfig_::buf_size, StreamingBuffer_::buf_size, CALLOC, StreamingBuffer_::cfg, and FREE.

Referenced by FileSetRange(), HtpBodyAppendChunk(), and StreamingBufferCompareRawData().

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int StreamingBufferInsertAt	(	StreamingBuffer *	sb,
		StreamingBufferSegment *	seg,
		const uint8_t *	data,
		uint32_t	data_len,
		uint64_t	offset
	)

Parameters

offset offset relative to StreamingBuffer::stream_offset

Definition at line 661 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, BUG_ON, StreamingBuffer_::cfg, DATA_FITS_AT_OFFSET, StreamingBufferConfig_::flags, offset, RB_EMPTY, StreamingBuffer_::sbb_tree, SCLogDebug, stream_offset, StreamingBuffer_::stream_offset, and STREAMING_BUFFER_AUTOSLIDE.

Referenced by StreamingBufferCompareRawData(), and TcpSegmentCompare().

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void StreamingBufferRegisterTests ( void )

Definition at line 1477 of file util-streaming-buffer.c.

References UtRegisterTest().

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void StreamingBufferSBBGetData	(	const StreamingBuffer *	sb,
		const StreamingBufferBlock *	sbb,
		const uint8_t **	data,
		uint32_t *	data_len
	)

get the data for one SBB

Definition at line 743 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_offset, StreamingBufferBlock::len, len, StreamingBufferBlock::offset, offset, and StreamingBuffer_::stream_offset.

Referenced by StreamNeedsReassembly(), StreamReassembleRawUpdateProgress(), and StreamTcpReassembleAppLayer().

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void StreamingBufferSBBGetDataAtOffset	(	const StreamingBuffer *	sb,
		const StreamingBufferBlock *	sbb,
		const uint8_t **	data,
		uint32_t *	data_len,
		uint64_t	offset
	)

get the data for one SBB

Definition at line 769 of file util-streaming-buffer.c.

References StreamingBuffer_::buf, StreamingBuffer_::buf_size, BUG_ON, StreamingBufferBlock::len, StreamingBufferBlock::offset, and StreamingBuffer_::stream_offset.

Referenced by StreamNeedsReassembly().

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int StreamingBufferSegmentCompareRawData	(	const StreamingBuffer *	sb,
		const StreamingBufferSegment *	seg,
		const uint8_t *	rawdata,
		uint32_t	rawdata_len
	)