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ndpiReader.c
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/*
* ndpiReader.c
*
* Copyright (C) 2011-18 - ntop.org
*
* nDPI is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nDPI 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include "ndpi_config.h"
#endif
#ifdef linux
#define _GNU_SOURCE
#include <sched.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#ifdef WIN32
#include <winsock2.h> /* winsock.h is included automatically */
#include <process.h>
#include <io.h>
#define getopt getopt____
#else
#include <unistd.h>
#include <netinet/in.h>
#endif
#include <string.h>
#include <stdarg.h>
#include <search.h>
#include <pcap.h>
#include <signal.h>
#include <pthread.h>
#include <sys/socket.h>
#include <assert.h>
#include <math.h>
#include "ndpi_api.h"
#include "uthash.h"
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <libgen.h>
#ifdef HAVE_JSON_C
#include <json.h>
#endif
#include "ndpi_util.h"
/** Client parameters **/
static char *_pcap_file[MAX_NUM_READER_THREADS]; /**< Ingress pcap file/interfaces */
static FILE *playlist_fp[MAX_NUM_READER_THREADS] = { NULL }; /**< Ingress playlist */
static FILE *results_file = NULL;
static char *results_path = NULL;
static char * bpfFilter = NULL; /**< bpf filter */
static char *_protoFilePath = NULL; /**< Protocol file path */
static char *_customCategoryFilePath= NULL; /**< Custom categories file path */
#ifdef HAVE_JSON_C
static char *_statsFilePath = NULL; /**< Top stats file path */
static char *_diagnoseFilePath = NULL; /**< Top stats file path */
static char *_jsonFilePath = NULL; /**< JSON file path */
static FILE *stats_fp = NULL; /**< for Top Stats JSON file */
#endif
#ifdef HAVE_JSON_C
static json_object *jArray_known_flows, *jArray_unknown_flows;
static json_object *jArray_topStats;
#endif
static u_int8_t live_capture = 0;
static u_int8_t undetected_flows_deleted = 0;
/** User preferences **/
static u_int8_t enable_protocol_guess = 1, verbose = 0, json_flag = 0;
int nDPI_LogLevel = 0;
char *_debug_protocols = NULL;
static u_int8_t stats_flag = 0, bpf_filter_flag = 0;
#ifdef HAVE_JSON_C
static u_int8_t file_first_time = 1;
#endif
static u_int32_t pcap_analysis_duration = (u_int32_t)-1;
static u_int16_t decode_tunnels = 0;
static u_int16_t num_loops = 1;
static u_int8_t shutdown_app = 0, quiet_mode = 0;
static u_int8_t num_threads = 1;
static struct timeval begin, end;
#ifdef linux
static int core_affinity[MAX_NUM_READER_THREADS];
#endif
static struct timeval pcap_start, pcap_end;
/** Detection parameters **/
static time_t capture_for = 0;
static time_t capture_until = 0;
static u_int32_t num_flows;
static struct ndpi_detection_module_struct *ndpi_info_mod = NULL;
struct flow_info {
struct ndpi_flow_info *flow;
u_int16_t thread_id;
};
static struct flow_info *all_flows;
struct info_pair {
u_int32_t addr;
u_int8_t version; /* IP version */
char proto[16]; /*app level protocol*/
int count;
};
typedef struct node_a{
u_int32_t addr;
u_int8_t version; /* IP version */
char proto[16]; /*app level protocol*/
int count;
struct node_a *left, *right;
}addr_node;
struct port_stats {
u_int32_t port; /* we'll use this field as the key */
u_int32_t num_pkts, num_bytes;
u_int32_t num_flows;
u_int32_t num_addr; /*number of distinct IP addresses */
u_int32_t cumulative_addr; /*cumulative some of IP addresses */
addr_node *addr_tree; /* tree of distinct IP addresses */
struct info_pair top_ip_addrs[MAX_NUM_IP_ADDRESS];
u_int8_t hasTopHost; /* as boolean flag */
u_int32_t top_host; /* host that is contributed to > 95% of traffic */
u_int8_t version; /* top host's ip version */
char proto[16]; /* application level protocol of top host */
UT_hash_handle hh; /* makes this structure hashable */
};
struct port_stats *srcStats = NULL, *dstStats = NULL;
// struct to hold count of flows received by destination ports
struct port_flow_info {
u_int32_t port; /* key */
u_int32_t num_flows;
UT_hash_handle hh;
};
// struct to hold single packet tcp flows sent by source ip address
struct single_flow_info {
u_int32_t saddr; /* key */
u_int8_t version; /* IP version */
struct port_flow_info *ports;
u_int32_t tot_flows;
UT_hash_handle hh;
};
struct single_flow_info *scannerHosts = NULL;
// struct to hold top receiver hosts
struct receiver {
u_int32_t addr; /* key */
u_int8_t version; /* IP version */
u_int32_t num_pkts;
UT_hash_handle hh;
};
struct receiver *receivers = NULL, *topReceivers = NULL;
struct ndpi_packet_trailer {
u_int32_t magic; /* 0x19682017 */
u_int16_t master_protocol /* e.g. HTTP */, app_protocol /* e.g. FaceBook */;
char name[16];
};
static pcap_dumper_t *extcap_dumper = NULL;
static char extcap_buf[16384];
static char *extcap_capture_fifo = NULL;
static u_int16_t extcap_packet_filter = (u_int16_t)-1;
// struct associated to a workflow for a thread
struct reader_thread {
struct ndpi_workflow *workflow;
pthread_t pthread;
u_int64_t last_idle_scan_time;
u_int32_t idle_scan_idx;
u_int32_t num_idle_flows;
struct ndpi_flow_info *idle_flows[IDLE_SCAN_BUDGET];
};
// array for every thread created for a flow
static struct reader_thread ndpi_thread_info[MAX_NUM_READER_THREADS];
// ID tracking
typedef struct ndpi_id {
u_int8_t ip[4]; // Ip address
struct ndpi_id_struct *ndpi_id; // nDpi worker structure
} ndpi_id_t;
// used memory counters
u_int32_t current_ndpi_memory = 0, max_ndpi_memory = 0;
void test_lib(); /* Forward */
/* ********************************** */
#ifdef DEBUG_TRACE
FILE *trace = NULL;
#endif
/********************** FUNCTIONS ********************* */
/**
* @brief Set main components necessary to the detection
*/
static void setupDetection(u_int16_t thread_id, pcap_t * pcap_handle);
/**
* @brief Print help instructions
*/
static void help(u_int long_help) {
printf("Welcome to nDPI %s\n\n", ndpi_revision());
printf("ndpiReader -i <file|device> [-f <filter>][-s <duration>][-m <duration>]\n"
" [-p <protos>][-l <loops> [-q][-d][-h][-t][-v <level>]\n"
" [-n <threads>][-w <file>][-c <file>][-j <file>][-x <file>]\n\n"
"Usage:\n"
" -i <file.pcap|device> | Specify a pcap file/playlist to read packets from or a\n"
" | device for live capture (comma-separated list)\n"
" -f <BPF filter> | Specify a BPF filter for filtering selected traffic\n"
" -s <duration> | Maximum capture duration in seconds (live traffic capture only)\n"
" -m <duration> | Split analysis duration in <duration> max seconds\n"
" -p <file>.protos | Specify a protocol file (eg. protos.txt)\n"
" -l <num loops> | Number of detection loops (test only)\n"
" -n <num threads> | Number of threads. Default: number of interfaces in -i.\n"
" | Ignored with pcap files.\n"
" -j <file.json> | Specify a file to write the content of packets in .json format\n"
#ifdef linux
" -g <id:id...> | Thread affinity mask (one core id per thread)\n"
#endif
" -d | Disable protocol guess and use only DPI\n"
" -q | Quiet mode\n"
" -t | Dissect GTP/TZSP tunnels\n"
" -r | Print nDPI version and git revision\n"
" -c <path> | Load custom categories from the specified file\n"
" -w <path> | Write test output on the specified file. This is useful for\n"
" | testing purposes in order to compare results across runs\n"
" -h | This help\n"
" -v <1|2|3> | Verbose 'unknown protocol' packet print.\n"
" | 1 = verbose\n"
" | 2 = very verbose\n"
" | 3 = port stats\n"
" -V <1-4> | nDPI logging level\n"
" | 1 - trace, 2 - debug, 3 - full debug\n"
" | >3 - full debug + dbg_proto = all\n"
" -b <file.json> | Specify a file to write port based diagnose statistics\n"
" -x <file.json> | Produce bpf filters for specified diagnose file. Use\n"
" | this option only for .json files generated with -b flag.\n");
#ifndef WIN32
printf("\nExcap (wireshark) options:\n"
" --extcap-interfaces\n"
" --extcap-version\n"
" --extcap-dlts\n"
" --extcap-interface <name>\n"
" --extcap-config\n"
" --capture\n"
" --extcap-capture-filter\n"
" --fifo <path to file or pipe>\n"
" --debug\n"
" --dbg-proto proto|num[,...]\n"
);
#endif
if(long_help) {
printf("\n\nSupported protocols:\n");
num_threads = 1;
ndpi_dump_protocols(ndpi_info_mod);
}
exit(!long_help);
}
static struct option longopts[] = {
/* mandatory extcap options */
{ "extcap-interfaces", no_argument, NULL, '0'},
{ "extcap-version", optional_argument, NULL, '1'},
{ "extcap-dlts", no_argument, NULL, '2'},
{ "extcap-interface", required_argument, NULL, '3'},
{ "extcap-config", no_argument, NULL, '4'},
{ "capture", no_argument, NULL, '5'},
{ "extcap-capture-filter", required_argument, NULL, '6'},
{ "fifo", required_argument, NULL, '7'},
{ "debug", no_argument, NULL, '8'},
{ "dbg-proto", required_argument, NULL, 257},
{ "ndpi-proto-filter", required_argument, NULL, '9'},
/* ndpiReader options */
{ "enable-protocol-guess", no_argument, NULL, 'd'},
{ "interface", required_argument, NULL, 'i'},
{ "filter", required_argument, NULL, 'f'},
{ "cpu-bind", required_argument, NULL, 'g'},
{ "loops", required_argument, NULL, 'l'},
{ "num-threads", required_argument, NULL, 'n'},
{ "protos", required_argument, NULL, 'p'},
{ "capture-duration", required_argument, NULL, 's'},
{ "decode-tunnels", no_argument, NULL, 't'},
{ "revision", no_argument, NULL, 'r'},
{ "verbose", no_argument, NULL, 'v'},
{ "version", no_argument, NULL, 'V'},
{ "help", no_argument, NULL, 'h'},
{ "json", required_argument, NULL, 'j'},
{ "result-path", required_argument, NULL, 'w'},
{ "quiet", no_argument, NULL, 'q'},
{0, 0, 0, 0}
};
/* ********************************** */
void extcap_interfaces() {
printf("extcap {version=%s}\n", ndpi_revision());
printf("interface {value=ndpi}{display=nDPI interface}\n");
exit(0);
}
/* ********************************** */
void extcap_dlts() {
u_int dlts_number = DLT_EN10MB;
printf("dlt {number=%u}{name=%s}{display=%s}\n", dlts_number, "ndpi", "nDPI Interface");
exit(0);
}
/* ********************************** */
struct ndpi_proto_sorter {
int id;
char name[16];
};
/* ********************************** */
int cmpProto(const void *_a, const void *_b) {
struct ndpi_proto_sorter *a = (struct ndpi_proto_sorter*)_a;
struct ndpi_proto_sorter *b = (struct ndpi_proto_sorter*)_b;
return(strcmp(a->name, b->name));
}
/* ********************************** */
int cmpFlows(const void *_a, const void *_b) {
struct ndpi_flow_info *fa = ((struct flow_info*)_a)->flow;
struct ndpi_flow_info *fb = ((struct flow_info*)_b)->flow;
uint64_t a_size = fa->src2dst_bytes + fa->dst2src_bytes;
uint64_t b_size = fb->src2dst_bytes + fb->dst2src_bytes;
if(a_size != b_size)
return a_size < b_size ? 1 : -1;
// copy from ndpi_workflow_node_cmp();
if(fa->ip_version < fb->ip_version ) return(-1); else { if(fa->ip_version > fb->ip_version ) return(1); }
if(fa->protocol < fb->protocol ) return(-1); else { if(fa->protocol > fb->protocol ) return(1); }
if(htonl(fa->src_ip) < htonl(fb->src_ip) ) return(-1); else { if(htonl(fa->src_ip) > htonl(fb->src_ip) ) return(1); }
if(htons(fa->src_port) < htons(fb->src_port)) return(-1); else { if(htons(fa->src_port) > htons(fb->src_port)) return(1); }
if(htonl(fa->dst_ip) < htonl(fb->dst_ip) ) return(-1); else { if(htonl(fa->dst_ip) > htonl(fb->dst_ip) ) return(1); }
if(htons(fa->dst_port) < htons(fb->dst_port)) return(-1); else { if(htons(fa->dst_port) > htons(fb->dst_port)) return(1); }
return(0);
}
/* ********************************** */
void extcap_config() {
int i, argidx = 0;
struct ndpi_proto_sorter *protos;
u_int ndpi_num_supported_protocols = ndpi_get_ndpi_num_supported_protocols(ndpi_info_mod);
ndpi_proto_defaults_t *proto_defaults = ndpi_get_proto_defaults(ndpi_info_mod);
/* -i <interface> */
printf("arg {number=%d}{call=-i}{display=Capture Interface}{type=string}"
"{tooltip=The interface name}\n", argidx++);
printf("arg {number=%d}{call=-i}{display=Pcap File to Analyze}{type=fileselect}"
"{tooltip=The pcap file to analyze (if the interface is unspecified)}\n", argidx++);
protos = (struct ndpi_proto_sorter*)malloc(sizeof(struct ndpi_proto_sorter) * ndpi_num_supported_protocols);
if(!protos) exit(0);
for(i=0; i<(int) ndpi_num_supported_protocols; i++) {
protos[i].id = i;
snprintf(protos[i].name, sizeof(protos[i].name), "%s", proto_defaults[i].protoName);
}
qsort(protos, ndpi_num_supported_protocols, sizeof(struct ndpi_proto_sorter), cmpProto);
printf("arg {number=%d}{call=-9}{display=nDPI Protocol Filter}{type=selector}"
"{tooltip=nDPI Protocol to be filtered}\n", argidx);
printf("value {arg=%d}{value=%d}{display=%s}\n", argidx, -1, "All Protocols (no nDPI filtering)");
for(i=0; i<(int)ndpi_num_supported_protocols; i++)
printf("value {arg=%d}{value=%d}{display=%s (%d)}\n", argidx, protos[i].id,
protos[i].name, protos[i].id);
free(protos);
exit(0);
}
/* ********************************** */
void extcap_capture() {
#ifdef DEBUG_TRACE
if(trace) fprintf(trace, " #### %s #### \n", __FUNCTION__);
#endif
if((extcap_dumper = pcap_dump_open(pcap_open_dead(DLT_EN10MB, 16384 /* MTU */),
extcap_capture_fifo)) == NULL) {
fprintf(stderr, "Unable to open the pcap dumper on %s", extcap_capture_fifo);
#ifdef DEBUG_TRACE
if(trace) fprintf(trace, "Unable to open the pcap dumper on %s\n",
extcap_capture_fifo);
#endif
return;
}
#ifdef DEBUG_TRACE
if(trace) fprintf(trace, "Starting packet capture [%p]\n", extcap_dumper);
#endif
}
/* ********************************** */
/**
* @brief Option parser
*/
static void parseOptions(int argc, char **argv) {
int option_idx = 0, do_capture = 0;
char *__pcap_file = NULL, *bind_mask = NULL;
int thread_id, opt;
#ifdef linux
u_int num_cores = sysconf(_SC_NPROCESSORS_ONLN);
#endif
#ifdef DEBUG_TRACE
trace = fopen("/tmp/ndpiReader.log", "a");
if(trace) fprintf(trace, " #### %s #### \n", __FUNCTION__);
#endif
while ((opt = getopt_long(argc, argv, "c:df:g:i:hp:l:s:tv:V:n:j:rp:w:q0123:456:7:89:m:b:x:", longopts, &option_idx)) != EOF) {
#ifdef DEBUG_TRACE
if(trace) fprintf(trace, " #### -%c [%s] #### \n", opt, optarg ? optarg : "");
#endif
switch (opt) {
case 'd':
enable_protocol_guess = 0;
break;
case 'i':
case '3':
_pcap_file[0] = optarg;
break;
case 'b':
#ifndef HAVE_JSON_C
printf("WARNING: this copy of ndpiReader has been compiled without JSON-C: json export disabled\n");
#else
_statsFilePath = optarg;
stats_flag = 1;
#endif
break;
case 'm':
pcap_analysis_duration = atol(optarg);
break;
case 'x':
#ifndef HAVE_JSON_C
printf("WARNING: this copy of ndpiReader has been compiled without JSON-C: json export disabled\n");
#else
_diagnoseFilePath = optarg;
bpf_filter_flag = 1;
#endif
break;
case 'f':
case '6':
bpfFilter = optarg;
break;
case 'g':
bind_mask = optarg;
break;
case 'l':
num_loops = atoi(optarg);
break;
case 'n':
num_threads = atoi(optarg);
break;
case 'p':
_protoFilePath = optarg;
break;
case 'c':
_customCategoryFilePath = optarg;
break;
case 's':
capture_for = atoi(optarg);
capture_until = capture_for + time(NULL);
break;
case 't':
decode_tunnels = 1;
break;
case 'r':
printf("ndpiReader - nDPI (%s)\n", ndpi_revision());
exit(0);
case 'v':
verbose = atoi(optarg);
break;
case 'V':
nDPI_LogLevel = atoi(optarg);
if(nDPI_LogLevel < 0) nDPI_LogLevel = 0;
if(nDPI_LogLevel > 3) {
nDPI_LogLevel = 3;
_debug_protocols = strdup("all");
}
break;
case 'h':
help(1);
break;
case 'j':
#ifndef HAVE_JSON_C
printf("WARNING: this copy of ndpiReader has been compiled without json-c: JSON export disabled\n");
#else
_jsonFilePath = optarg;
json_flag = 1;
#endif
break;
case 'w':
results_path = strdup(optarg);
if((results_file = fopen(results_path, "w")) == NULL) {
printf("Unable to write in file %s: quitting\n", results_path);
return;
}
break;
case 'q':
quiet_mode = 1;
nDPI_LogLevel = 0;
break;
/* Extcap */
case '0':
extcap_interfaces();
break;
case '1':
printf("extcap {version=%s}\n", ndpi_revision());
break;
case '2':
extcap_dlts();
break;
case '4':
extcap_config();
break;
case '5':
do_capture = 1;
break;
case '7':
extcap_capture_fifo = strdup(optarg);
break;
case '8':
nDPI_LogLevel = NDPI_LOG_DEBUG_EXTRA;
_debug_protocols = strdup("all");
break;
case '9':
extcap_packet_filter = ndpi_get_proto_by_name(ndpi_info_mod, optarg);
if (extcap_packet_filter == NDPI_PROTOCOL_UNKNOWN) extcap_packet_filter = atoi(optarg);
break;
case 257:
_debug_protocols = strdup(optarg);
break;
default:
help(0);
break;
}
}
if(!bpf_filter_flag) {
if(do_capture) {
quiet_mode = 1;
extcap_capture();
}
// check parameters
if(!bpf_filter_flag && (_pcap_file[0] == NULL || strcmp(_pcap_file[0], "") == 0)) {
help(0);
}
if(strchr(_pcap_file[0], ',')) { /* multiple ingress interfaces */
num_threads = 0; /* setting number of threads = number of interfaces */
__pcap_file = strtok(_pcap_file[0], ",");
while (__pcap_file != NULL && num_threads < MAX_NUM_READER_THREADS) {
_pcap_file[num_threads++] = __pcap_file;
__pcap_file = strtok(NULL, ",");
}
} else {
if(num_threads > MAX_NUM_READER_THREADS) num_threads = MAX_NUM_READER_THREADS;
for(thread_id = 1; thread_id < num_threads; thread_id++)
_pcap_file[thread_id] = _pcap_file[0];
}
#ifdef linux
for(thread_id = 0; thread_id < num_threads; thread_id++)
core_affinity[thread_id] = -1;
if(num_cores > 1 && bind_mask != NULL) {
char *core_id = strtok(bind_mask, ":");
thread_id = 0;
while (core_id != NULL && thread_id < num_threads) {
core_affinity[thread_id++] = atoi(core_id) % num_cores;
core_id = strtok(NULL, ":");
}
}
#endif
}
#ifdef DEBUG_TRACE
if(trace) fclose(trace);
#endif
}
/* ********************************** */
/**
* @brief From IPPROTO to string NAME
*/
static char* ipProto2Name(u_int16_t proto_id) {
static char proto[8];
switch(proto_id) {
case IPPROTO_TCP:
return("TCP");
break;
case IPPROTO_UDP:
return("UDP");
break;
case IPPROTO_ICMP:
return("ICMP");
break;
case IPPROTO_ICMPV6:
return("ICMPV6");
break;
case 112:
return("VRRP");
break;
case IPPROTO_IGMP:
return("IGMP");
break;
}
snprintf(proto, sizeof(proto), "%u", proto_id);
return(proto);
}
/* ********************************** */
/**
* @brief A faster replacement for inet_ntoa().
*/
char* intoaV4(u_int32_t addr, char* buf, u_int16_t bufLen) {
char *cp, *retStr;
uint byte;
int n;
cp = &buf[bufLen];
*--cp = '\0';
n = 4;
do {
byte = addr & 0xff;
*--cp = byte % 10 + '0';
byte /= 10;
if(byte > 0) {
*--cp = byte % 10 + '0';
byte /= 10;
if(byte > 0)
*--cp = byte + '0';
}
*--cp = '.';
addr >>= 8;
} while (--n > 0);
/* Convert the string to lowercase */
retStr = (char*)(cp+1);
return(retStr);
}
/* ********************************** */
/**
* @brief Print the flow
*/
static void printFlow(u_int16_t id, struct ndpi_flow_info *flow, u_int16_t thread_id) {
#ifdef HAVE_JSON_C
json_object *jObj;
#endif
FILE *out = results_file ? results_file : stdout;
if((verbose != 1) && (verbose != 2))
return;
if(!json_flag) {
fprintf(out, "\t%u", id);
fprintf(out, "\t%s ", ipProto2Name(flow->protocol));
fprintf(out, "%s%s%s:%u %s %s%s%s:%u ",
(flow->ip_version == 6) ? "[" : "",
flow->src_name, (flow->ip_version == 6) ? "]" : "", ntohs(flow->src_port),
flow->bidirectional ? "<->" : "->",
(flow->ip_version == 6) ? "[" : "",
flow->dst_name, (flow->ip_version == 6) ? "]" : "", ntohs(flow->dst_port)
);
if(flow->vlan_id > 0) fprintf(out, "[VLAN: %u]", flow->vlan_id);
if(flow->detected_protocol.master_protocol) {
char buf[64];
fprintf(out, "[proto: %u.%u/%s]",
flow->detected_protocol.master_protocol, flow->detected_protocol.app_protocol,
ndpi_protocol2name(ndpi_thread_info[thread_id].workflow->ndpi_struct,
flow->detected_protocol, buf, sizeof(buf)));
} else
fprintf(out, "[proto: %u/%s]",
flow->detected_protocol.app_protocol,
ndpi_get_proto_name(ndpi_thread_info[thread_id].workflow->ndpi_struct, flow->detected_protocol.app_protocol));
if(flow->detected_protocol.category != 0)
fprintf(out, "[cat: %s/%u]",
ndpi_category_get_name(ndpi_thread_info[thread_id].workflow->ndpi_struct,
flow->detected_protocol.category),
(unsigned int)flow->detected_protocol.category);
fprintf(out, "[%u pkts/%llu bytes ", flow->src2dst_packets, (long long unsigned int) flow->src2dst_bytes);
fprintf(out, "%s %u pkts/%llu bytes]",
(flow->dst2src_packets > 0) ? "<->" : "->",
flow->dst2src_packets, (long long unsigned int) flow->dst2src_bytes);
if(flow->host_server_name[0] != '\0') fprintf(out, "[Host: %s]", flow->host_server_name);
if(flow->info[0] != '\0') fprintf(out, "[%s]", flow->info);
if(flow->ssh_ssl.client_info[0] != '\0') fprintf(out, "[client: %s]", flow->ssh_ssl.client_info);
if(flow->ssh_ssl.server_info[0] != '\0') fprintf(out, "[server: %s]", flow->ssh_ssl.server_info);
if(flow->bittorent_hash[0] != '\0') fprintf(out, "[BT Hash: %s]", flow->bittorent_hash);
fprintf(out, "\n");
} else {
#ifdef HAVE_JSON_C
jObj = json_object_new_object();
json_object_object_add(jObj,"protocol",json_object_new_string(ipProto2Name(flow->protocol)));
json_object_object_add(jObj,"host_a.name",json_object_new_string(flow->src_name));
json_object_object_add(jObj,"host_a.port",json_object_new_int(ntohs(flow->src_port)));
json_object_object_add(jObj,"host_b.name",json_object_new_string(flow->dst_name));
json_object_object_add(jObj,"host_b.port",json_object_new_int(ntohs(flow->dst_port)));
if(flow->detected_protocol.master_protocol)
json_object_object_add(jObj,"detected.master_protocol",
json_object_new_int(flow->detected_protocol.master_protocol));
json_object_object_add(jObj,"detected.app_protocol",
json_object_new_int(flow->detected_protocol.app_protocol));
if(flow->detected_protocol.master_protocol) {
char tmp[256];
snprintf(tmp, sizeof(tmp), "%s.%s",
ndpi_get_proto_name(ndpi_thread_info[thread_id].workflow->ndpi_struct,
flow->detected_protocol.master_protocol),
ndpi_get_proto_name(ndpi_thread_info[thread_id].workflow->ndpi_struct,
flow->detected_protocol.app_protocol));
json_object_object_add(jObj,"detected.protocol.name",
json_object_new_string(tmp));
} else
json_object_object_add(jObj,"detected.protocol.name",
json_object_new_string(ndpi_get_proto_name(ndpi_thread_info[thread_id].workflow->ndpi_struct,
flow->detected_protocol.app_protocol)));
json_object_object_add(jObj,"packets",json_object_new_int(flow->src2dst_packets + flow->dst2src_packets));
json_object_object_add(jObj,"bytes",json_object_new_int(flow->src2dst_bytes + flow->dst2src_bytes));
if(flow->host_server_name[0] != '\0')
json_object_object_add(jObj,"host.server.name",json_object_new_string(flow->host_server_name));
if((flow->ssh_ssl.client_info[0] != '\0') || (flow->ssh_ssl.server_info[0] != '\0')) {
json_object *sjObj = json_object_new_object();
if(flow->ssh_ssl.client_info[0] != '\0')
json_object_object_add(sjObj, "client", json_object_new_string(flow->ssh_ssl.client_info));
if(flow->ssh_ssl.server_info[0] != '\0')
json_object_object_add(sjObj, "server", json_object_new_string(flow->ssh_ssl.server_info));
json_object_object_add(jObj, "ssh_ssl", sjObj);
}
if(json_flag == 1)
json_object_array_add(jArray_known_flows,jObj);
else if(json_flag == 2)
json_object_array_add(jArray_unknown_flows,jObj);
#endif
}
}
/* ********************************** */
/**
* @brief Unknown Proto Walker
*/
static void node_print_unknown_proto_walker(const void *node,
ndpi_VISIT which, int depth, void *user_data) {
struct ndpi_flow_info *flow = *(struct ndpi_flow_info**)node;
u_int16_t thread_id = *((u_int16_t*)user_data);
if(flow->detected_protocol.app_protocol != NDPI_PROTOCOL_UNKNOWN) return;
if((which == ndpi_preorder) || (which == ndpi_leaf)) {
/* Avoid walking the same node multiple times */
all_flows[num_flows].thread_id = thread_id, all_flows[num_flows].flow = flow;
num_flows++;
}
}
/* ********************************** */
/**
* @brief Known Proto Walker
*/
static void node_print_known_proto_walker(const void *node,
ndpi_VISIT which, int depth, void *user_data) {
struct ndpi_flow_info *flow = *(struct ndpi_flow_info**)node;
u_int16_t thread_id = *((u_int16_t*)user_data);
if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_UNKNOWN) return;
if((which == ndpi_preorder) || (which == ndpi_leaf)) {
/* Avoid walking the same node multiple times */
all_flows[num_flows].thread_id = thread_id, all_flows[num_flows].flow = flow;
num_flows++;
}
}
/* ********************************** */
/**
* @brief Guess Undetected Protocol
*/
static u_int16_t node_guess_undetected_protocol(u_int16_t thread_id, struct ndpi_flow_info *flow) {
flow->detected_protocol = ndpi_guess_undetected_protocol(ndpi_thread_info[thread_id].workflow->ndpi_struct,
flow->protocol,
ntohl(flow->src_ip),
ntohs(flow->src_port),
ntohl(flow->dst_ip),
ntohs(flow->dst_port));
// printf("Guess state: %u\n", flow->detected_protocol);
if(flow->detected_protocol.app_protocol != NDPI_PROTOCOL_UNKNOWN)
ndpi_thread_info[thread_id].workflow->stats.guessed_flow_protocols++;
return(flow->detected_protocol.app_protocol);
}
/* ********************************** */
/**
* @brief Proto Guess Walker
*/
static void node_proto_guess_walker(const void *node, ndpi_VISIT which, int depth, void *user_data) {
struct ndpi_flow_info *flow = *(struct ndpi_flow_info **) node;
u_int16_t thread_id = *((u_int16_t *) user_data);
if((which == ndpi_preorder) || (which == ndpi_leaf)) { /* Avoid walking the same node multiple times */
if((!flow->detection_completed) && flow->ndpi_flow)
flow->detected_protocol = ndpi_detection_giveup(ndpi_thread_info[0].workflow->ndpi_struct, flow->ndpi_flow);
if(enable_protocol_guess) {
if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_UNKNOWN) {
node_guess_undetected_protocol(thread_id, flow);
}
}
process_ndpi_collected_info(ndpi_thread_info[thread_id].workflow, flow);
ndpi_thread_info[thread_id].workflow->stats.protocol_counter[flow->detected_protocol.app_protocol] += flow->src2dst_packets + flow->dst2src_packets;
ndpi_thread_info[thread_id].workflow->stats.protocol_counter_bytes[flow->detected_protocol.app_protocol] += flow->src2dst_bytes + flow->dst2src_bytes;
ndpi_thread_info[thread_id].workflow->stats.protocol_flows[flow->detected_protocol.app_protocol]++;
}
}
/* *********************************************** */
void updateScanners(struct single_flow_info **scanners, u_int32_t saddr,
u_int8_t version, u_int32_t dport) {
struct single_flow_info *f;
struct port_flow_info *p;
HASH_FIND_INT(*scanners, (int *)&saddr, f);
if(f == NULL) {
f = (struct single_flow_info*)malloc(sizeof(struct single_flow_info));
if(!f) return;
f->saddr = saddr;
f->version = version;
f->tot_flows = 1;
f->ports = NULL;
p = (struct port_flow_info*)malloc(sizeof(struct port_flow_info));
if(!p) {
free(f);
return;
} else
p->port = dport, p->num_flows = 1;
HASH_ADD_INT(f->ports, port, p);
HASH_ADD_INT(*scanners, saddr, f);
} else{
struct port_flow_info *pp;
f->tot_flows++;
HASH_FIND_INT(f->ports, (int *)&dport, pp);
if(pp == NULL) {
pp = (struct port_flow_info*)malloc(sizeof(struct port_flow_info));
if(!pp) return;
pp->port = dport, pp->num_flows = 1;
HASH_ADD_INT(f->ports, port, pp);
} else
pp->num_flows++;
}
}
/* *********************************************** */
int updateIpTree(u_int32_t key, u_int8_t version,
addr_node **vrootp, const char *proto) {
addr_node *q;
addr_node **rootp = vrootp;
if(rootp == (addr_node **)0)
return 0;
while (*rootp != (addr_node *)0) {
/* Knuth's T1: */
if((version == (*rootp)->version) && (key == (*rootp)->addr)) {
/* T2: */
return ++((*rootp)->count);
}
rootp = (key < (*rootp)->addr) ?
&(*rootp)->left : /* T3: follow left branch */
&(*rootp)->right; /* T4: follow right branch */
}
q = (addr_node *) malloc(sizeof(addr_node)); /* T5: key not found */