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/* Copyright (C) 2007-2020 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Danny Browning <danny.browning@protectwise.com>
*/
#include "suricata-common.h"
#include "tm-threads.h"
#ifndef __SOURCE_PCAP_FILE_HELPER_H__
#define __SOURCE_PCAP_FILE_HELPER_H__
typedef struct PcapFileGlobalVars_ {
uint64_t cnt; /** packet counter */
ChecksumValidationMode conf_checksum_mode;
ChecksumValidationMode checksum_mode;
SC_ATOMIC_DECLARE(unsigned int, invalid_checksums);
} PcapFileGlobalVars;
/**
* Data that is shared amongst File, Directory, and Thread level vars
*/
typedef struct PcapFileSharedVars_
{
char *bpf_string;
uint32_t tenant_id;
struct timespec last_processed;
bool should_delete;
ThreadVars *tv;
TmSlot *slot;
/* counters */
uint64_t pkts;
uint64_t bytes;
uint64_t files;
uint8_t done;
uint32_t errs;
/** callback result -- set if one of the thread module failed. */
int cb_result;
} PcapFileSharedVars;
/**
* Data specific to a single pcap file
*/
typedef struct PcapFileFileVars_
{
char *filename;
pcap_t *pcap_handle;
int datalink;
struct bpf_program filter;
PcapFileSharedVars *shared;
/* fields used to get the first packet's timestamp early,
* so it can be used to setup the time subsys. */
const u_char *first_pkt_data;
struct pcap_pkthdr *first_pkt_hdr;
struct timeval first_pkt_ts;
} PcapFileFileVars;
/**
* Dispatch a file for processing, where the information necessary to process that
* file is as PcapFileFileVars object.
* @param ptv PcapFileFileVars object to be processed
* @return
*/
TmEcode PcapFileDispatch(PcapFileFileVars *ptv);
/**
* From a PcapFileFileVars, prepare the filename for processing by setting
* pcap_handle, datalink, and filter
* @param pfv PcapFileFileVars object to populate
* @return
*/
TmEcode InitPcapFile(PcapFileFileVars *pfv);
/**
* Cleanup resources associated with a PcapFileFileVars object.
* @param pfv Object to be cleaned up
*/
void CleanupPcapFileFileVars(PcapFileFileVars *pfv);
/**
* Determine if a datalink type is valid, setting a decoder function if valid.
* @param datalink Datalink type to validate
* @param decoder Pointer to decoder to set if valid
* @return TM_ECODE_OK if valid datalink type and decoder has been set.
*/
TmEcode ValidateLinkType(int datalink, DecoderFunc *decoder);
const char *PcapFileGetFilename(void);
#endif /* __SOURCE_PCAP_FILE_HELPER_H__ */
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