analyzer-d4-pibs/bin/pibs.h

136 lines
3.8 KiB
C

/*
* pibs - Passive Identification of BackScatter
*
* Copyright (C) 2019 Gerard Wagener
* Copyright (C) 2019 CIRCL Computer Incident Response Center Luxembourg
* (SMILE gie).
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _PIBS_H_
#define _PIBS_H_
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <assert.h>
#include <string.h>
#include <pcap/pcap.h>
#include <wtap.h>
#include <wtap-int.h>
#include <unistd.h>
#include <signal.h>
#include <netinet/ip.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <errno.h>
#include <hiredis/hiredis.h>
//TODO test other values
#define NBINS 1024 //Number of bins
#define NBINITEMS 255 //Number of items per bin
#define SZBIN 4
#define SZUUID 40
#define SZKEY 1024
#define SZSERVER 1024
#define NBINSCALE 2 // Scaling factor of the entire datastructure
#define HDBG(...) if (HASHDEBUG) fprintf(stderr, __VA_ARGS__)
#define ERR_ATTACH_NOT_EMPTY 11
#define ERR_NO_SHMID_FILE 12
typedef struct pibs_header_s {
uint8_t magic [4];
uint8_t version;
//Put some useful stuff here
uint32_t next_item;
uint32_t bin_offset;
uint64_t data_size;
uint32_t max_item;
uint8_t padding [3];
} pibs_header_t;
/* TODO This can squezed. Timestamp can be expressed on 8 bits i.e. relative
* minutes
* IP can be represented with 16 bits ipaddr = ip / bin_size
* Not sure if space can be saved in usual cases
*/
typedef struct item_s {
uint32_t timestamp;
uint32_t next_item;
uint32_t ipaddr;
} item_t;
/* Need to hash source IP addresses and record first seen and flags */
typedef struct pibs_s {
int errno_copy;
int errno_pibs;
char *filename;
char *uuid;
char *key;
char *server;
uint16_t port;
redisContext *ctx;
int should_dump_table;
int show_backscatter;
int show_stats;
int should_create_shm;
int should_attach;
int should_writepcap;
//TODO use self contained data structure that can be easily serialized
//Put data structure in an entire block to easier serialize
uint8_t *data;
uint32_t next_block;
uint32_t next_item;
uint32_t bin_offset;
uint64_t data_size;
uint32_t* bin_table;
uint32_t max_item;
item_t* items;
int shmid;
char shmid_file [FILENAME_MAX];
char outputfile[FILENAME_MAX];
pcap_dumper_t* dumper;
pcap_t* outcap;
uint32_t redisdb;
void* synseen_callback;
} pibs_t;
int load_shmid_file(pibs_t* pibs);
int pibs_shmat(pibs_t* pibs);
int pibs_shmget(pibs_t* pibs);
int_fast64_t get_last_timestamp(pibs_t* pibs, uint32_t ip);
void insert_ip(pibs_t* pibs, uint32_t ip, uint32_t ts);
void process_frame(pibs_t* pibs, wtap *wth, uint8_t *eth);
void process_file(pibs_t* pibs);
void pibs_dump_raw(pibs_t* pibs);
void pibs_dump_stats(pibs_t* pibs);
void process_redis_list(pibs_t* pibs);
void synseen_process_frame(pibs_t *pibs, wtap *wth, uint8_t* eth,
struct ip* ipv4, struct tcphdr* tcp);
int synseen_init(pibs_t* pibs);
pibs_t* init(void);
typedef void (* synseen_callback_t)(pibs_t* pibs, wtap *wth, uint8_t* eth,
struct ip* ipv4, struct tcphdr* tcp);
#endif