app-layer-htp-file.c File Reference

#include "suricata.h"
#include "suricata-common.h"
#include "debug.h"
#include "decode.h"
#include "threads.h"
#include "util-print.h"
#include "util-pool.h"
#include "util-radix-tree.h"
#include "stream-tcp-private.h"
#include "stream-tcp-reassemble.h"
#include "stream-tcp.h"
#include "stream.h"
#include "app-layer.h"
#include "app-layer-protos.h"
#include "app-layer-parser.h"
#include "app-layer-htp.h"
#include "app-layer-htp-file.h"
#include "util-spm.h"
#include "util-debug.h"
#include "util-time.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "flow-util.h"
#include "detect-engine.h"
#include "detect-engine-state.h"
#include "detect-parse.h"
#include "conf.h"
#include "util-memcmp.h"

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Functions
int	HTPFileOpen (HtpState *s, const uint8_t *filename, uint16_t filename_len, const uint8_t *data, uint32_t data_len, uint64_t txid, uint8_t direction)
	Open the file with "filename" and pass the first chunk of data if any. More...
int	HTPFileStoreChunk (HtpState *s, const uint8_t *data, uint32_t data_len, uint8_t direction)
	Store a chunk of data in the flow. More...
int	HTPFileClose (HtpState *s, const uint8_t *data, uint32_t data_len, uint8_t flags, uint8_t direction)
	Close the file in the flow. More...
void	HTPFileParserRegisterTests (void)

Detailed Description

Author

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

This file provides HTTP protocol file handling support for the engine using HTP library.

Definition in file app-layer-htp-file.c.

Function Documentation

int HTPFileClose	(	HtpState *	s,
		const uint8_t *	data,
		uint32_t	data_len,
		uint8_t	flags,
		uint8_t	direction
	)

Close the file in the flow.

Parameters

s	http state
data	data chunk if any
data_len	length of the data portion
flags	flags to indicate events
direction	flow direction

Currently on the FLOW_FILE_TRUNCATED flag is implemented, indicating that the file isn't complete but we're stopping storing it.

Return values

0	ok
-1	error
-2	not storing files on this flow/tx

Definition at line 219 of file app-layer-htp-file.c.

References Flow_::alproto, ALPROTO_HTTP, Flow_::alstate, AppLayerParserGetEventsByTx(), AppLayerParserGetTx(), AppLayerParserParse(), AppLayerParserThreadCtxAlloc(), AppLayerParserThreadCtxFree(), AppLayerDecoderEvents_::cnt, FILE_STATE_CLOSED, FileCloseFile(), FileDataSize(), FilePrune(), HtpState_::files_tc, HtpState_::files_ts, FLOWLOCK_UNLOCK, FLOWLOCK_WRLOCK, FileContainer_::head, File_::next, Flow_::proto, Flow_::protoctx, File_::sb, SCEnter, SCLogDebug, SCReturnInt, File_::state, STREAM_EOF, STREAM_START, STREAM_TOCLIENT, STREAM_TOSERVER, StreamingBufferCompareRawData(), StreamTcpFreeConfig(), StreamTcpInitConfig(), FileContainer_::tail, TRUE, UTHBuildFlow(), and UTHFreeFlow().

Referenced by HTPFreeConfig().

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int HTPFileOpen	(	HtpState *	s,
		const uint8_t *	filename,
		uint16_t	filename_len,
		const uint8_t *	data,
		uint32_t	data_len,
		uint64_t	txid,
		uint8_t	direction
	)

Open the file with "filename" and pass the first chunk of data if any.

Parameters

s	http state
filename	name of the file
filename_len	length of the name
data	data chunk (if any)
data_len	length of the data portion
direction	flow direction

Return values

0	ok
-1	error
-2	not handling files on this flow

Definition at line 79 of file app-layer-htp-file.c.

References HtpState_::cfg, HtpState_::f, Flow_::file_flags, FILE_NOSTORE, FILE_STORE, FileContainerAlloc(), FileFlowToFlags(), FileOpenFile(), FilePrune(), HtpState_::files_tc, HtpState_::files_ts, FileSetTx(), HtpState_::flags, flags, FLOWFILE_NO_STORE_TC, FLOWFILE_NO_STORE_TS, HTP_FLAG_STORE_FILES_TC, HTP_FLAG_STORE_FILES_TS, HTP_FLAG_STORE_FILES_TX_TC, HTP_FLAG_STORE_FILES_TX_TS, HTPCfgRec_::request, HTPCfgRec_::response, HTPCfgDir_::sbcfg, SCLogDebug, SCReturnInt, HtpState_::store_tx_id, STREAM_TOCLIENT, STREAM_TOSERVER, and FileContainer_::tail.

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void HTPFileParserRegisterTests

(

void

)

Definition at line 1583 of file app-layer-htp-file.c.

References UtRegisterTest().

Referenced by HTPParserRegisterTests().

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int HTPFileStoreChunk	(	HtpState *	s,
		const uint8_t *	data,
		uint32_t	data_len,
		uint8_t	direction
	)

Store a chunk of data in the flow.

Parameters

s	http state
data	data chunk (if any)
data_len	length of the data portion
direction	flow direction

Return values

0	ok
-1	error
-2	file doesn't need storing

Definition at line 165 of file app-layer-htp-file.c.

References FileAppendData(), FilePrune(), HtpState_::files_tc, HtpState_::files_ts, SCEnter, SCLogDebug, SCReturnInt, and STREAM_TOCLIENT.

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