app-layer-htp-range.h File Reference

#include "suricata-common.h"
#include "util-thash.h"
#include "rust.h"

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Data Structures
struct	HttpRangeContainerBuffer
struct	HttpRangeContainerFile
struct	HttpRangeContainerBlock

Typedefs
typedef struct HttpRangeContainerBuffer	HttpRangeContainerBuffer
typedef struct HttpRangeContainerFile	HttpRangeContainerFile
typedef struct HttpRangeContainerBlock	HttpRangeContainerBlock

Functions
void	HttpRangeContainersInit (void)
void	HttpRangeContainersDestroy (void)
uint32_t	HttpRangeContainersTimeoutHash (const SCTime_t ts)
int	HttpRangeContainerBufferCompare (HttpRangeContainerBuffer *a, HttpRangeContainerBuffer *b)
	RB_HEAD (HTTP_RANGES, HttpRangeContainerBuffer)
	RB_PROTOTYPE (HTTP_RANGES, HttpRangeContainerBuffer, rb, HttpRangeContainerBufferCompare)
int	HttpRangeAppendData (const StreamingBufferConfig *sbcfg, HttpRangeContainerBlock *c, const uint8_t *data, uint32_t len)
File *	HttpRangeClose (const StreamingBufferConfig *sbcfg, HttpRangeContainerBlock *c, uint16_t flags)
HttpRangeContainerBlock *	HttpRangeContainerOpenFile (const unsigned char *key, uint32_t keylen, const Flow *f, const HTTPContentRange *cr, const StreamingBufferConfig *sbcfg, const unsigned char *name, uint16_t name_len, uint16_t flags, const unsigned char *data, uint32_t data_len)
void	HttpRangeFreeBlock (HttpRangeContainerBlock *b)

Typedef Documentation

HttpRangeContainerBlock

typedef struct HttpRangeContainerBlock HttpRangeContainerBlock

A structure representing a single range request : either skipping, buffering, or appending As this belongs to a flow, appending data to it is ensured to be thread-safe Only one block per file has the pointer to the container

HttpRangeContainerBuffer

typedef struct HttpRangeContainerBuffer HttpRangeContainerBuffer

HttpRangeContainerFile

typedef struct HttpRangeContainerFile HttpRangeContainerFile

Item in hash table for a file in multiple ranges Thread-safety is ensured with the thread-safe hash table cf THashData The number of use is increased for each flow opening a new HttpRangeContainerBlock until it closes this HttpRangeContainerBlock The design goal is to have concurrency only on opening and closing a range request and have a lock-free data structure belonging to one Flow (see HttpRangeContainerBlock below) for every append in between (we suppose we have many appends per range request)

Function Documentation

HttpRangeAppendData()

int HttpRangeAppendData	(	const StreamingBufferConfig *	sbcfg,
		HttpRangeContainerBlock *	c,
		const uint8_t *	data,
		uint32_t	len
	)

Definition at line 396 of file app-layer-htp-range.c.

Referenced by HTPFileStoreChunk().

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HttpRangeClose()

File* HttpRangeClose	(	const StreamingBufferConfig *	sbcfg,
		HttpRangeContainerBlock *	c,
		uint16_t	flags
	)

Note

if f is non-NULL, the ownership of the file is transfered to the caller.

Definition at line 469 of file app-layer-htp-range.c.

HttpRangeContainerBufferCompare()

int HttpRangeContainerBufferCompare	(	HttpRangeContainerBuffer *	a,
		HttpRangeContainerBuffer *	b
	)

Definition at line 45 of file app-layer-htp-range.c.

References HttpRangeContainerBuffer::buflen, HttpRangeContainerBuffer::offset, and HttpRangeContainerBuffer::start.

HttpRangeContainerOpenFile()

HttpRangeContainerBlock* HttpRangeContainerOpenFile	(	const unsigned char *	key,
		uint32_t	keylen,
		const Flow *	f,
		const HTTPContentRange *	cr,
		const StreamingBufferConfig *	sbcfg,
		const unsigned char *	name,
		uint16_t	name_len,
		uint16_t	flags,
		const unsigned char *	data,
		uint32_t	data_len
	)

HttpRangeContainersDestroy()

void HttpRangeContainersDestroy

(

void

)

Definition at line 183 of file app-layer-htp-range.c.

References ContainerUrlRangeList, ContainerTHashTable::ht, and THashShutdown().

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HttpRangeContainersInit()

void HttpRangeContainersInit

(

void

)

Definition at line 150 of file app-layer-htp-range.c.

References ConfGet(), ContainerUrlRangeList, ContainerTHashTable::ht, HTTP_RANGE_DEFAULT_MEMCAP, HTTP_RANGE_DEFAULT_TIMEOUT, ParseSizeStringU64(), SCLogDebug, SCLogWarning, str, StringParseUint32(), and THashInit().

Referenced by PreRunInit().

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HttpRangeContainersTimeoutHash()

uint32_t HttpRangeContainersTimeoutHash

(

const SCTime_t

ts

)

Definition at line 188 of file app-layer-htp-range.c.

References SCLogDebug.

HttpRangeFreeBlock()

void HttpRangeFreeBlock

(

HttpRangeContainerBlock *

b

)

Definition at line 613 of file app-layer-htp-range.c.

References BUG_ON, HttpRangeContainerBlock::container, and HttpRangeContainerBlock::files.

Referenced by HTPFileClose().

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RB_HEAD()

RB_HEAD	(	HTTP_RANGES	,
		HttpRangeContainerBuffer
	)

RB_PROTOTYPE()

RB_PROTOTYPE	(	HTTP_RANGES	,
		HttpRangeContainerBuffer	,
		rb	,
		HttpRangeContainerBufferCompare
	)