spp_ai.h File Reference

#include "sf_snort_packet.h"
#include "sf_dynamic_preprocessor.h"
#include "uthash.h"

Go to the source code of this file.

Data Structures
struct	pkt_key
struct	pkt_info
struct	AI_config
struct	_hierarchy_node
struct	_AI_snort_alert
Defines
#define	PRIVATE   static
#define	DEFAULT_HASH_CLEANUP_INTERVAL   300
#define	DEFAULT_STREAM_EXPIRE_INTERVAL   300
#define	DEFAULT_DATABASE_INTERVAL   30
#define	DEFAULT_ALERT_CLUSTERING_INTERVAL   3600
#define	DEFAULT_ALERT_LOG_FILE   "/var/log/snort/alert"
#define	DEFAULT_CLUSTER_LOG_FILE   "/var/log/snort/cluster_alert"
Typedefs
typedef unsigned char	uint8_t
typedef unsigned short	uint16_t
typedef unsigned int	uint32_t
typedef struct _hierarchy_node	hierarchy_node
typedef struct _AI_snort_alert	AI_snort_alert
Enumerations
enum	BOOL { false, true }
enum	cluster_type {   none, src_addr, dst_addr, src_port,   dst_port, CLUSTER_TYPES }
Functions
int	preg_match (const char *, char *, char ***, int *)
	Check if a string matches a regular expression.
void *	AI_hashcleanup_thread (void *)
	Thread called for cleaning up the hash table from the traffic streams older than a certain threshold.
void *	AI_file_alertparser_thread (void *)
	Thread for parsing Snort's alert file.
void *	AI_mysql_alertparser_thread (void *)
	Thread for parsing alerts from MySQL database.
void	AI_pkt_enqueue (SFSnortPacket *)
	Function called for appending a new packet to the hash table, creating a new stream or appending it to an existing stream.
void	AI_set_stream_observed (struct pkt_key key)
	Set the flag "observed" on a stream associated to a security alert, so that it won't be removed from the hash table.
void	AI_hierarchies_build (AI_config *, hierarchy_node **, int)
	Build the clustering hierarchy trees.
struct pkt_info *	AI_get_stream_by_key (struct pkt_key)
	Get a TCP stream by key.
AI_snort_alert *	AI_get_alerts (void)
	Return the alerts parsed so far as a linked list.
AI_snort_alert *	AI_mysql_get_alerts (void)
	Return the alerts parsed so far as a linked list.
void	AI_free_alerts (AI_snort_alert *node)
	Deallocate the memory of a log alert linked list.
void	AI_mysql_free_alerts (AI_snort_alert *node)
Variables
DynamicPreprocessorData	_dpd
AI_snort_alert *(*	get_alerts )(void)

---

Define Documentation

#define DEFAULT_ALERT_CLUSTERING_INTERVAL   3600

Default interval in seconds for the thread clustering alerts

#define DEFAULT_ALERT_LOG_FILE   "/var/log/snort/alert"

Default path to Snort's log file

#define DEFAULT_CLUSTER_LOG_FILE   "/var/log/snort/cluster_alert"

Default path to Snort's clustered alerts file

#define DEFAULT_DATABASE_INTERVAL   30

Default interval in seconds for reading alerts from the alert database, if used

#define DEFAULT_HASH_CLEANUP_INTERVAL   300

Default interval in seconds for the thread cleaning up TCP streams

#define DEFAULT_STREAM_EXPIRE_INTERVAL   300

Default interval in seconds before a stream without any packet is considered timed out

#define PRIVATE   static

---

Typedef Documentation

typedef struct _AI_snort_alert AI_snort_alert

Data type for Snort alerts

typedef struct _hierarchy_node hierarchy_node

typedef unsigned short uint16_t

typedef unsigned int uint32_t

typedef unsigned char uint8_t

---

Enumeration Type Documentation

enum BOOL

Enumerator:

false
true

enum cluster_type

Possible types of clustering attributes

Enumerator:

none
src_addr
dst_addr
src_port
dst_port
CLUSTER_TYPES

---

Function Documentation

void AI_mysql_free_alerts

(

AI_snort_alert *

node

)

---

Variable Documentation

DynamicPreprocessorData _dpd

AI_snort_alert*(* get_alerts)(void)

Function pointer to the function used for getting the alert list (from log file, db, ...)