util-file.c File Reference

#include "suricata-common.h"
#include "suricata.h"
#include "debug.h"
#include "flow.h"
#include "stream.h"
#include "stream-tcp.h"
#include "runmodes.h"
#include "util-hash.h"
#include "util-debug.h"
#include "util-memcmp.h"
#include "util-print.h"
#include "app-layer-parser.h"
#include "util-validate.h"

Include dependency graph for util-file.c:

Go to the source code of this file.

Functions
void	FileForceFilestoreEnable (void)
void	FileForceMagicEnable (void)
void	FileForceMd5Enable (void)
void	FileForceSha1Enable (void)
void	FileForceSha256Enable (void)
int	FileForceFilestore (void)
void	FileReassemblyDepthEnable (uint32_t size)
uint32_t	FileReassemblyDepth (void)
int	FileForceMagic (void)
int	FileForceMd5 (void)
int	FileForceSha1 (void)
int	FileForceSha256 (void)
void	FileForceTrackingEnable (void)
void	FileForceHashParseCfg (ConfNode *conf)
	Function to parse forced file hashing configuration. More...
uint16_t	FileFlowToFlags (const Flow *flow, uint8_t direction)
uint64_t	FileDataSize (const File *file)
	get the size of the file data More...
uint64_t	FileTrackedSize (const File *file)
	get the size of the file More...
void	FilePrune (FileContainer *ffc)
FileContainer *	FileContainerAlloc (void)
	allocate a FileContainer More...
void	FileContainerRecycle (FileContainer *ffc)
	Recycle a FileContainer. More...
void	FileContainerFree (FileContainer *ffc)
	Free a FileContainer. More...
void	FileContainerAdd (FileContainer *ffc, File *ff)
int	FileStore (File *ff)
	Tag a file for storing. More...
int	FileSetTx (File *ff, uint64_t txid)
	Set the TX id for a file. More...
void	FileContainerSetTx (FileContainer *ffc, uint64_t tx_id)
int	FileAppendData (FileContainer *ffc, const uint8_t *data, uint32_t data_len)
	Store/handle a chunk of file data in the File structure The last file in the FileContainer will be used. More...
int	FileAppendDataById (FileContainer *ffc, uint32_t track_id, const uint8_t *data, uint32_t data_len)
	Store/handle a chunk of file data in the File structure The file with 'track_id' in the FileContainer will be used. More...
int	FileAppendGAPById (FileContainer *ffc, uint32_t track_id, const uint8_t *data, uint32_t data_len)
	Store/handle a chunk of file data in the File structure The file with 'track_id' in the FileContainer will be used. More...
void	FileSetInspectSizes (File *file, const uint32_t win, const uint32_t min)
int	FileSetRange (FileContainer *ffc, uint64_t start, uint64_t end)
	Sets the offset range for a file. More...
int	FileOpenFileWithId (FileContainer *ffc, const StreamingBufferConfig *sbcfg, uint32_t track_id, const uint8_t *name, uint16_t name_len, const uint8_t *data, uint32_t data_len, uint16_t flags)
	Open a new File. More...
int	FileCloseFilePtr (File *ff, const uint8_t *data, uint32_t data_len, uint16_t flags)
int	FileCloseFile (FileContainer *ffc, const uint8_t *data, uint32_t data_len, uint16_t flags)
	Close a File. More...
int	FileCloseFileById (FileContainer *ffc, uint32_t track_id, const uint8_t *data, uint32_t data_len, uint16_t flags)
void	FileDisableStoring (Flow *f, uint8_t direction)
	disable file storage for a flow More...
void	FileDisableMagic (Flow *f, uint8_t direction)
	disable file magic lookups for this flow More...
void	FileDisableMd5 (Flow *f, uint8_t direction)
	disable file md5 calc for this flow More...
void	FileDisableSha1 (Flow *f, uint8_t direction)
	disable file sha1 calc for this flow More...
void	FileDisableSha256 (Flow *f, uint8_t direction)
	disable file sha256 calc for this flow More...
void	FileDisableFilesize (Flow *f, uint8_t direction)
	disable file size tracking for this flow More...
void	FileDisableStoringForTransaction (Flow *f, uint8_t direction, uint64_t tx_id)
	disable file storing for files in a transaction More...
void	FileStoreFileById (FileContainer *fc, uint32_t file_id)
	flag a file with id "file_id" to be stored. More...
void	FileStoreAllFilesForTx (FileContainer *fc, uint64_t tx_id)
void	FileStoreAllFiles (FileContainer *fc)
void	FileTruncateAllOpenFiles (FileContainer *fc)

Variables
int	g_detect_disabled

Detailed Description

Author

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

Pablo Rincon pablo.nosp@m..rin.nosp@m.con.c.nosp@m.resp.nosp@m.o@gma.nosp@m.il.c.nosp@m.om

Definition in file util-file.c.

Function Documentation

int FileAppendData	(	FileContainer *	ffc,
		const uint8_t *	data,
		uint32_t	data_len
	)

Store/handle a chunk of file data in the File structure The last file in the FileContainer will be used.

Store a chunk of file data in the flow. The open "flowfile" will be used.

Parameters

ffc	FileContainer used to append to
data	data chunk
data_len	data chunk len

Return values

0	ok
-1	error
-2	no store for this file

Definition at line 695 of file util-file.c.

References SCEnter, SCReturnInt, and FileContainer_::tail.

Referenced by HTPFileStoreChunk(), and SMTPProcessDataChunk().

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int FileAppendDataById	(	FileContainer *	ffc,
		uint32_t	track_id,
		const uint8_t *	data,
		uint32_t	data_len
	)

Store/handle a chunk of file data in the File structure The file with 'track_id' in the FileContainer will be used.

Parameters

ffc	FileContainer used to append to
track_id	id to lookup the file
data	data chunk
data_len	data chunk len

Return values

0	ok
-1	error
-2	no store for this file

Definition at line 719 of file util-file.c.

References File_::file_track_id, FileContainer_::head, File_::next, SCEnter, SCReturnInt, and FileContainer_::tail.

Referenced by main().

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int FileAppendGAPById	(	FileContainer *	ffc,
		uint32_t	track_id,
		const uint8_t *	data,
		uint32_t	data_len
	)

Store/handle a chunk of file data in the File structure The file with 'track_id' in the FileContainer will be used.

Parameters

ffc	FileContainer used to append to
track_id	id to lookup the file
data	data chunk
data_len	data chunk len

Return values

0	ok
-1	error
-2	no store for this file

Definition at line 750 of file util-file.c.

References FILE_HAS_GAPS, FILE_MD5, FILE_NOMD5, FILE_NOSHA1, FILE_NOSHA256, FILE_SHA1, FILE_SHA256, File_::file_track_id, File_::flags, FileContainer_::head, File_::next, SCEnter, SCLogDebug, SCReturnInt, and FileContainer_::tail.

Referenced by main().

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int FileCloseFile	(	FileContainer *	ffc,
		const uint8_t *	data,
		uint32_t	data_len,
		uint16_t	flags
	)

Close a File.

Parameters

ffc	the container
data	final data if any
data_len	data len if any
flags	flags

Return values

0	ok
-1	error

Definition at line 1000 of file util-file.c.

References FileCloseFilePtr(), SCEnter, SCReturnInt, and FileContainer_::tail.

Referenced by HTPFileClose(), and SMTPProcessDataChunk().

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int FileCloseFileById	(	FileContainer *	ffc,
		uint32_t	track_id,
		const uint8_t *	data,
		uint32_t	data_len,
		uint16_t	flags
	)

Definition at line 1016 of file util-file.c.

References File_::file_track_id, FileCloseFilePtr(), FileContainer_::head, File_::next, SCEnter, SCReturnInt, and FileContainer_::tail.

Referenced by main().

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int FileCloseFilePtr	(	File *	ff,
		const uint8_t *	data,
		uint32_t	data_len,
		uint16_t	flags
	)

Definition at line 918 of file util-file.c.

References FILE_HAS_GAPS, FILE_MD5, FILE_NOSTORE, FILE_SHA1, FILE_STATE_CLOSED, FILE_STATE_ERROR, FILE_STATE_OPENED, FILE_STATE_TRUNCATED, FILE_TRUNCATED, File_::flags, len, SCEnter, SCLogDebug, SCReturnInt, File_::size, and File_::state.

Referenced by FileCloseFile(), FileCloseFileById(), FileDisableFilesize(), FileTruncateAllOpenFiles(), and OutputRegisterFiledataLogger().

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void FileContainerAdd	(	FileContainer *	ffc,
		File *	ff
	)

Definition at line 527 of file util-file.c.

References FileContainer_::head, File_::next, and FileContainer_::tail.

Referenced by FileSetRange().

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FileContainer* FileContainerAlloc

(

void

)

allocate a FileContainer

Return values

new	newly allocated FileContainer
NULL	error

Definition at line 411 of file util-file.c.

References SC_ERR_MEM_ALLOC, SCLogError, SCMalloc, and unlikely.

Referenced by HTPFileOpen(), and SMTPProcessDataChunk().

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void FileContainerFree

(

FileContainer *

ffc

)

Free a FileContainer.

Parameters

ffc	FileContainer

Definition at line 447 of file util-file.c.

References FileContainer_::head, File_::name, File_::next, next, File_::sb, SC_ERR_MEM_ALLOC, SCFree, SCLogError, SCMalloc, File_::sid, StreamingBufferFree(), FileContainer_::tail, and unlikely.

Referenced by HTPStateFree(), and SMTPStateAlloc().

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void FileContainerRecycle

(

FileContainer *

ffc

)

Recycle a FileContainer.

Parameters

ffc	FileContainer

Definition at line 428 of file util-file.c.

References FileContainer_::head, File_::next, next, and FileContainer_::tail.

Referenced by main().

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void FileContainerSetTx	(	FileContainer *	ffc,
		uint64_t	tx_id
	)

Definition at line 562 of file util-file.c.

References BUG_ON, FILE_NOSTORE, FILE_NOTRACK, FILE_STATE_ERROR, FILE_STATE_OPENED, FILE_STATE_TRUNCATED, FILE_USE_DETECT, FileDataSize(), FileSetTx(), File_::flags, File_::sb, SCEnter, SCLogDebug, SCReturnInt, File_::size, File_::state, StreamingBufferAppendNoTrack(), and FileContainer_::tail.

Referenced by main().

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uint64_t FileDataSize

(

const File *

file

)

get the size of the file data

This doesn't reflect how much of the file we have in memory, just the total size of filedata so far.

Definition at line 279 of file util-file.c.

References StreamingBuffer_::buf_offset, File_::sb, SCLogDebug, and StreamingBuffer_::stream_offset.

Referenced by DetectFilemagicRegister(), FileContainerSetTx(), FileDisableFilesize(), FileTrackedSize(), HTPFileClose(), OutputRegisterFiledataLogger(), and SMTPParserCleanup().

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void FileDisableFilesize	(	Flow *	f,
		uint8_t	direction
	)

disable file size tracking for this flow

Parameters

f	LOCKED flow
direction	flow direction

Definition at line 1221 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, Flow_::file_flags, FILE_NOSTORE, FILE_NOTRACK, FILE_STATE_OPENED, FILE_TRUNCATED, FileCloseFilePtr(), FileDataSize(), File_::flags, FLOWFILE_NO_SIZE_TC, FLOWFILE_NO_SIZE_TS, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, File_::state, and STREAM_TOSERVER.

Referenced by SigMatchSignaturesGetSgh().

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void FileDisableMagic	(	Flow *	f,
		uint8_t	direction
	)

disable file magic lookups for this flow

Parameters

f	LOCKED flow
direction	flow direction

Definition at line 1073 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, Flow_::file_flags, FILE_NOMAGIC, File_::flags, FLOWFILE_NO_MAGIC_TC, FLOWFILE_NO_MAGIC_TS, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, and STREAM_TOSERVER.

Referenced by SigMatchSignaturesGetSgh().

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void FileDisableMd5	(	Flow *	f,
		uint8_t	direction
	)

disable file md5 calc for this flow

Parameters

f	LOCKED flow
direction	flow direction

Definition at line 1104 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, Flow_::file_flags, FILE_NOMD5, File_::flags, FLOWFILE_NO_MD5_TC, FLOWFILE_NO_MD5_TS, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, and STREAM_TOSERVER.

Referenced by SigMatchSignaturesGetSgh().

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void FileDisableSha1	(	Flow *	f,
		uint8_t	direction
	)

disable file sha1 calc for this flow

Parameters

f	LOCKED flow
direction	flow direction

Definition at line 1143 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, Flow_::file_flags, FILE_NOSHA1, File_::flags, FLOWFILE_NO_SHA1_TC, FLOWFILE_NO_SHA1_TS, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, and STREAM_TOSERVER.

Referenced by SigMatchSignaturesGetSgh().

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void FileDisableSha256	(	Flow *	f,
		uint8_t	direction
	)

disable file sha256 calc for this flow

Parameters

f	LOCKED flow
direction	flow direction

Definition at line 1182 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, Flow_::file_flags, FILE_NOSHA256, File_::flags, FLOWFILE_NO_SHA256_TC, FLOWFILE_NO_SHA256_TS, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, and STREAM_TOSERVER.

Referenced by SigMatchSignaturesGetSgh().

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void FileDisableStoring	(	Flow *	f,
		uint8_t	direction
	)

disable file storage for a flow

Parameters

f	LOCKED flow
direction	flow direction

Definition at line 1041 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, Flow_::file_flags, FILE_NOSTORE, FILE_STORE, File_::flags, FLOWFILE_NO_STORE_TC, FLOWFILE_NO_STORE_TS, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, and STREAM_TOSERVER.

Referenced by SigMatchSignaturesGetSgh().

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void FileDisableStoringForTransaction	(	Flow *	f,
		uint8_t	direction,
		uint64_t	tx_id
	)

disable file storing for files in a transaction

disable file storing for a transaction

Parameters

f	LOCKED flow
direction	flow direction
tx_id	transaction id

Definition at line 1279 of file util-file.c.

References Flow_::alproto, Flow_::alstate, AppLayerParserGetFiles(), DEBUG_ASSERT_FLOW_LOCKED, FILE_STORE, File_::flags, FileContainer_::head, File_::next, Flow_::proto, SCEnter, SCLogDebug, SCReturn, and File_::txid.

Referenced by DetectEngineStateFree().

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uint16_t FileFlowToFlags	(	const Flow *	flow,
		uint8_t	direction
	)

Definition at line 219 of file util-file.c.

References Flow_::file_flags, FILE_NOMAGIC, FILE_NOMD5, FILE_NOSHA1, FILE_NOSHA256, FILE_NOSTORE, flags, FLOWFILE_NO_MAGIC_TC, FLOWFILE_NO_MAGIC_TS, FLOWFILE_NO_MD5_TC, FLOWFILE_NO_MD5_TS, FLOWFILE_NO_SHA1_TC, FLOWFILE_NO_SHA1_TS, FLOWFILE_NO_SHA256_TC, FLOWFILE_NO_SHA256_TS, FLOWFILE_NO_STORE_TC, FLOWFILE_NO_STORE_TS, and STREAM_TOSERVER.

Referenced by HTPFileOpen(), and SMTPProcessDataChunk().

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int FileForceFilestore

(

void

)

Definition at line 113 of file util-file.c.

Referenced by SigMatchSignaturesGetSgh().

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void FileForceFilestoreEnable

(

void

)

Definition at line 88 of file util-file.c.

Referenced by JsonBuildFileInfoRecord().

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void FileForceHashParseCfg

(

ConfNode *

conf

)

Function to parse forced file hashing configuration.

Definition at line 160 of file util-file.c.

References BUG_ON, ConfNodeLookupChild(), ConfNodeLookupChildValue(), ConfValIsTrue(), FileForceMd5Enable(), FileForceSha1Enable(), FileForceSha256Enable(), next, SC_ERR_DEPRECATED_CONF, SCLogInfo, SCLogWarning, TAILQ_FOREACH, and ConfNode_::val.

Referenced by JsonBuildFileInfoRecord().

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int FileForceMagic

(

void

)

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

Referenced by OutputRegisterFiledataLogger(), OutputRegisterFileLogger(), and SigMatchSignaturesGetSgh().

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void FileForceMagicEnable

(

void

)

Definition at line 93 of file util-file.c.

Referenced by JsonBuildFileInfoRecord().

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int FileForceMd5

(

void

)

Definition at line 137 of file util-file.c.

Referenced by SigMatchSignaturesGetSgh().

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void FileForceMd5Enable

(

void

)

Definition at line 98 of file util-file.c.

Referenced by FileForceHashParseCfg().

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int FileForceSha1

(

void

)

Definition at line 142 of file util-file.c.

Referenced by SigMatchSignaturesGetSgh().

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void FileForceSha1Enable

(

void

)

Definition at line 103 of file util-file.c.

Referenced by FileForceHashParseCfg().

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int FileForceSha256

(

void

)

Definition at line 147 of file util-file.c.

Referenced by SigMatchSignaturesGetSgh().

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void FileForceSha256Enable

(

void

)

Definition at line 108 of file util-file.c.

Referenced by FileForceHashParseCfg().

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void FileForceTrackingEnable

(

void

)

Definition at line 152 of file util-file.c.

Referenced by JsonBuildFileInfoRecord().

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int FileOpenFileWithId	(	FileContainer *	ffc,
		const StreamingBufferConfig *	sbcfg,
		uint32_t	track_id,
		const uint8_t *	name,
		uint16_t	name_len,
		const uint8_t *	data,
		uint32_t	data_len,
		uint16_t	flags
	)

Open a new File.

Return values

0	ok
-1	failed

Definition at line 906 of file util-file.c.

References File_::file_track_id.

Referenced by HTPFileOpen(), main(), and SMTPProcessDataChunk().

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void FilePrune

(

FileContainer *

ffc

)

Definition at line 376 of file util-file.c.

References FileContainer_::head, File_::next, SCLogDebug, and FileContainer_::tail.

Referenced by main().

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uint32_t FileReassemblyDepth

(

void

)

Definition at line 124 of file util-file.c.

References TcpStreamCnf_::reassembly_depth, and stream_config.

Referenced by AppLayerHtpNeedFileInspection(), DetectFilestoreRegister(), and HtpConfigRestoreBackup().

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void FileReassemblyDepthEnable

(

uint32_t

size

)

Definition at line 118 of file util-file.c.

Referenced by HtpConfigRestoreBackup().

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void FileSetInspectSizes	(	File *	file,
		const uint32_t	win,
		const uint32_t	min
	)

Definition at line 773 of file util-file.c.

References File_::inspect_min_size, and File_::inspect_window.

int FileSetRange	(	FileContainer *	ffc,
		uint64_t	start,
		uint64_t	end
	)

Sets the offset range for a file.

Parameters

ffc	the container
start	start offset
end	end offset

Return values

0	ok
-1	error

Definition at line 789 of file util-file.c.

References File_::end, File_::fd, FILE_NOMAGIC, FILE_NOMD5, FILE_NOSHA1, FILE_NOSHA256, FILE_NOSTORE, FILE_STATE_ERROR, FILE_STATE_OPENED, FILE_STORE, FILE_USE_DETECT, FileContainerAdd(), FileStore(), FileTrackedSize(), File_::flags, flags, g_detect_disabled, File_::sb, SCEnter, SCLogDebug, SCReturnInt, SCReturnPtr, File_::size, File_::start, File_::state, StreamingBufferInit(), and FileContainer_::tail.

Referenced by HTPFileSetRange().

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int FileSetTx	(	File *	ff,
		uint64_t	txid
	)

Set the TX id for a file.

Parameters

ff	The file to store
txid	the tx id

Definition at line 554 of file util-file.c.

References SCLogDebug, SCReturnInt, and File_::txid.

Referenced by FileContainerSetTx(), and HTPFileOpen().

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int FileStore

(

File *

ff

)

Tag a file for storing.

Parameters

ff	The file to store

Definition at line 542 of file util-file.c.

References FILE_STORE, File_::flags, and SCReturnInt.

Referenced by FileSetRange(), FileStoreAllFiles(), FileStoreAllFilesForTx(), and FileStoreFileById().

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void FileStoreAllFiles

(

FileContainer *

fc

)

Definition at line 1340 of file util-file.c.

References FileStore(), FileContainer_::head, File_::next, and SCEnter.

Referenced by DetectFilestoreRegister().

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void FileStoreAllFilesForTx	(	FileContainer *	fc,
		uint64_t	tx_id
	)

Definition at line 1325 of file util-file.c.

References FileStore(), FileContainer_::head, File_::next, SCEnter, and File_::txid.

Referenced by DetectFilestoreRegister().

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void FileStoreFileById	(	FileContainer *	fc,
		uint32_t	file_id
	)

flag a file with id "file_id" to be stored.

Parameters

fc	file store
file_id	the file's id

Definition at line 1310 of file util-file.c.

References File_::file_track_id, FileStore(), FileContainer_::head, File_::next, and SCEnter.

Referenced by DetectFilestoreRegister().

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uint64_t FileTrackedSize

(

const File *

file

)

get the size of the file

This doesn't reflect how much of the file we have in memory, just the total size of file so far.

Definition at line 296 of file util-file.c.

References File_::content_inspected, File_::content_stored, FILE_NOMAGIC, FILE_STATE_CLOSED, FILE_STORE, FILE_USE_DETECT, FileDataSize(), File_::flags, File_::inspect_min_size, File_::inspect_window, MAX, MIN, File_::sb, SCEnter, SCLogDebug, SCReturnInt, File_::size, File_::state, StreamingBuffer_::stream_offset, and StreamingBufferSlideToOffset().

Referenced by DetectFilesizeRegister(), FileSetRange(), JsonBuildFileInfoRecord(), and SMTPParserCleanup().

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void FileTruncateAllOpenFiles

(

FileContainer *

fc

)

Definition at line 1353 of file util-file.c.

References FILE_SHA256, FILE_STATE_OPENED, FILE_TRUNCATED, FileCloseFilePtr(), File_::flags, FileContainer_::head, len, File_::next, SCEnter, and File_::state.

Referenced by AppLayerHtpPrintStats(), and SMTPStateAlloc().

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Variable Documentation

int g_detect_disabled

global indicating if detection is enabled

Definition at line 218 of file suricata.c.

Referenced by FileSetRange(), GetProgramVersion(), and RegisterAllModules().