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Flow.cpp
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Flow.cpp
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/*
*
* (C) 2013-14 - ntop.org
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include "ntop_includes.h"
/* *************************************** */
Flow::Flow(NetworkInterface *_iface,
u_int16_t _vlanId, u_int8_t _protocol,
u_int8_t cli_mac[6], IpAddress *_cli_ip, u_int16_t _cli_port,
u_int8_t srv_mac[6], IpAddress *_srv_ip, u_int16_t _srv_port,
time_t _first_seen, time_t _last_seen) : GenericHashEntry(_iface) {
vlanId = _vlanId, protocol = _protocol, cli_port = _cli_port, srv_port = _srv_port;
cli2srv_packets = 0, cli2srv_bytes = 0, srv2cli_packets = 0, srv2cli_bytes = 0, cli2srv_last_packets = 0,
cli2srv_last_bytes = 0, srv2cli_last_packets = 0, srv2cli_last_bytes = 0;
detection_completed = false, ndpi_detected_protocol = NDPI_PROTOCOL_UNKNOWN;
ndpi_flow = NULL, cli_id = srv_id = NULL, client_proc = server_proc = NULL;
json_info = strdup("{}"), cli2srv_direction = true, twh_over = false,
dissect_next_http_packet = false, pass_verdict = true,
host_server_name = NULL;
src2dst_tcp_flags = dst2src_tcp_flags = 0, last_update_time.tv_sec = 0,
bytes_thpt = top_bytes_thpt = pkts_thpt = top_pkts_thpt = 0;
cli2srv_last_bytes = prev_cli2srv_last_bytes = 0, srv2cli_last_bytes = prev_srv2cli_last_bytes = 0;
cli2srv_last_packets = prev_cli2srv_last_packets = 0, srv2cli_last_packets = prev_srv2cli_last_packets = 0;
last_db_dump.cli2srv_packets = 0, last_db_dump.srv2cli_packets = 0,
last_db_dump.cli2srv_bytes = 0, last_db_dump.srv2cli_bytes = 0, last_db_dump.last_dump = 0;
iface->findFlowHosts(_vlanId, cli_mac, _cli_ip, &cli_host, srv_mac, _srv_ip, &srv_host);
if(cli_host) { cli_host->incUses(); if(srv_host) cli_host->incrContact(srv_host, true); }
if(srv_host) { srv_host->incUses(); if(cli_host) srv_host->incrContact(cli_host, false); }
first_seen = _first_seen, last_seen = _last_seen;
categorization.category = NULL, categorization.flow_categorized = false;
bytes_thpt_trend = trend_unknown;
pkts_thpt_trend = trend_unknown;
protocol_processed = false;
memset(&http, 0, sizeof(http)), memset(&dns, 0, sizeof(dns));
memset(&tcp_stats_s2d, 0, sizeof(tcp_stats_s2d)), memset(&tcp_stats_d2s, 0, sizeof(tcp_stats_d2s));
memset(&clientNwLatency, 0, sizeof(clientNwLatency)), memset(&serverNwLatency, 0, sizeof(serverNwLatency)),
aggregationInfo.name = NULL;
switch(protocol) {
case IPPROTO_TCP:
case IPPROTO_UDP:
if(iface->is_ndpi_enabled())
allocFlowMemory();
break;
default:
ndpi_detected_protocol = ndpi_guess_undetected_protocol(iface->get_ndpi_struct(),
protocol, 0, 0, 0, 0);
break;
}
if(!iface->is_packet_interface())
last_update_time.tv_sec = (long)first_seen;
// refresh_process();
}
/* *************************************** */
Flow::Flow(NetworkInterface *_iface,
u_int16_t _vlanId, u_int8_t _protocol,
u_int8_t cli_mac[6], IpAddress *_cli_ip, u_int16_t _cli_port,
u_int8_t srv_mac[6], IpAddress *_srv_ip, u_int16_t _srv_port) : GenericHashEntry(_iface) {
time_t now = iface->getTimeLastPktRcvd();
Flow(_iface, _vlanId, _protocol, cli_mac, _cli_ip, _cli_port,
srv_mac, _srv_ip, _srv_port, now, now);
}
/* *************************************** */
void Flow::allocFlowMemory() {
if((ndpi_flow = (ndpi_flow_struct*)calloc(1, iface->get_flow_size())) == NULL)
throw "Not enough memory";
if((cli_id = calloc(1, iface->get_size_id())) == NULL)
throw "Not enough memory";
if((srv_id = calloc(1, iface->get_size_id())) == NULL)
throw "Not enough memory";
}
/* *************************************** */
void Flow::deleteFlowMemory() {
if(ndpi_flow) { free(ndpi_flow); ndpi_flow = NULL; }
if(cli_id) { free(cli_id); cli_id = NULL; }
if(srv_id) { free(srv_id); srv_id = NULL; }
}
/* *************************************** */
Flow::~Flow() {
struct timeval tv = { 0, 0};
checkBlacklistedFlow();
update_hosts_stats(&tv);
dumpFlow(true /* Dump only the last part of the flow */);
if(cli_host) cli_host->decUses();
if(srv_host) srv_host->decUses();
if(categorization.category != NULL) free(categorization.category);
if(json_info) free(json_info);
if(client_proc) delete(client_proc);
if(server_proc) delete(server_proc);
if(http.last_method) free(http.last_method);
if(http.last_url) free(http.last_url);
if(dns.last_query) free(dns.last_query);
if(aggregationInfo.name) free(aggregationInfo.name);
deleteFlowMemory();
if(host_server_name) free(host_server_name);
}
/* *************************************** */
void Flow::checkBlacklistedFlow() {
if(!blacklist_alarm_emitted) {
if(cli_host
&& srv_host
&& (cli_host->is_blacklisted()
|| srv_host->is_blacklisted())) {
char c_buf[64], s_buf[64], *c, *s, fbuf[256], alert_msg[1024];
c = cli_host->get_ip()->print(c_buf, sizeof(c_buf));
s = srv_host->get_ip()->print(s_buf, sizeof(s_buf));
snprintf(alert_msg, sizeof(alert_msg),
"%s <A HREF='/lua/host_details.lua?host=%s&ifname=%s'>%s</A> contacted %s host <A HREF='/lua/host_details.lua?host=%s&ifname=%s'>%s</A> [%s]",
cli_host->is_blacklisted() ? "Blacklisted host" : "Host",
c, iface->get_name(), cli_host->get_name() ? cli_host->get_name() : c,
srv_host->is_blacklisted() ? "blacklisted" : "",
s, iface->get_name(), srv_host->get_name() ? srv_host->get_name() : s,
print(fbuf, sizeof(fbuf)));
ntop->getRedis()->queueAlert(alert_level_warning, alert_dangerous_host, alert_msg);
}
blacklist_alarm_emitted = true;
}
}
/* *************************************** */
void Flow::aggregateInfo(char *_name, u_int16_t ndpi_proto_id,
AggregationType mode,
bool aggregation_to_track
/*
i.e. it is not here for an error (such as NXDOMAIN)
so we do not store persistently on disk aggregations
due to errors that might fill-up the disk quickly
*/) {
if((_name == NULL) || (_name[0] == '\0'))
return; /* Nothing to do */
if(ntop->getPrefs()->get_aggregation_mode() != aggregations_disabled) {
StringHost *host;
char *name = _name, *first_name = NULL;
if(ntop->getPrefs()->use_short_aggregation_names()
&& (mode == aggregation_domain_name)
&& (strlen(name) > 3 /* .XX */)) {
u_int num = 0, i;
/* In order to reduce the number of hosts we can shorten
the host name and limit it to two levels in domain name
*/
for(i=strlen(_name)-2; i>0; i--) {
if(_name[i] == '.') {
num++;
first_name = &_name[i+1];
if(num == 2)
name = &_name[i+1];
else if(num > 2) {
name = first_name;
}
}
}
}
#if 0
if(mode == aggregation_domain_name)
ntop->getTrace()->traceEvent(TRACE_WARNING, "%s", name);
else
return; // FIX
#endif
host = iface->findHostByString(NULL /* all hosts */, name, ndpi_proto_id, true);
if(host != NULL) {
host->set_aggregation_mode(mode);
if(aggregationInfo.name && strcmp(aggregationInfo.name, name)) {
struct timeval tv;
tv.tv_sec = (long)iface->getTimeLastPktRcvd(), tv.tv_usec = 0;
update_hosts_stats(&tv);
}
if(aggregationInfo.name) {
free(aggregationInfo.name);
aggregationInfo.name = NULL;
}
aggregationInfo.name = strdup(name);
host->inc_num_queries_rcvd();
host->set_tracked_host(aggregation_to_track);
host->updateSeen();
host->updateActivities();
if(cli_host) host->incrContact(iface, host->get_host_serial(), cli_host->get_ip(), true, true);
}
}
}
/* *************************************** */
void Flow::processDetectedProtocol() {
if(protocol_processed || (ndpi_flow == NULL)) return;
if(ndpi_flow->host_server_name[0] != '\0') {
Utils::sanitizeHostName((char*)ndpi_flow->host_server_name);
host_server_name = strdup((char*)ndpi_flow->host_server_name);
}
switch(ndpi_detected_protocol) {
case NDPI_PROTOCOL_DNS:
if(ndpi_flow->host_server_name[0] != '\0') {
if(dns.last_query) free(dns.last_query);
dns.last_query = strdup((const char*)ndpi_flow->host_server_name);
}
if(ntop->getPrefs()->decode_dns_responses()) {
if(ndpi_flow->host_server_name[0] != '\0') {
char delimiter = '@', *name = NULL;
char *at = (char*)strchr((const char*)ndpi_flow->host_server_name, delimiter);
bool to_track = false;
/* Consider only positive DNS replies */
if(at != NULL)
name = &at[1], at[0] = '\0', to_track = true;
else if((!strstr((const char*)ndpi_flow->host_server_name, ".in-addr.arpa"))
&& (!strstr((const char*)ndpi_flow->host_server_name, ".ip6.arpa")))
name = (char*)ndpi_flow->host_server_name;
if(name) {
// ntop->getTrace()->traceEvent(TRACE_NORMAL, "[DNS] %s", (char*)ndpi_flow->host_server_name);
if(ndpi_flow->protos.dns.ret_code != 0)
to_track = false; /* Error response */
else {
if(ndpi_flow->protos.dns.num_answers > 0) {
to_track = true, protocol_processed = true;
if(at != NULL)
ntop->getRedis()->setResolvedAddress(name, (char*)ndpi_flow->host_server_name);
}
}
aggregateInfo((char*)ndpi_flow->host_server_name,
ndpi_detected_protocol, aggregation_domain_name, to_track);
}
}
}
break;
case NDPI_PROTOCOL_NETBIOS:
if(ndpi_flow->host_server_name[0] != '\0') {
get_cli_host()->set_host_label((char*)ndpi_flow->host_server_name);
protocol_processed = true;
}
break;
case NDPI_PROTOCOL_WHOIS_DAS:
if(ndpi_flow->host_server_name[0] != '\0') {
protocol_processed = true;
aggregateInfo((char*)ndpi_flow->host_server_name,
ndpi_detected_protocol, aggregation_domain_name, true);
}
break;
/* No break here !*/
case NDPI_PROTOCOL_HTTP:
case NDPI_PROTOCOL_HTTP_PROXY:
case NDPI_SERVICE_GOOGLE:
if(ndpi_flow->nat_ip[0] != '\0') {
// ntop->getTrace()->traceEvent(TRACE_NORMAL, "-> %s", (char*)ndpi_flow->nat_ip);
aggregateInfo((char*)ndpi_flow->nat_ip, ndpi_detected_protocol, aggregation_client_name, true);
}
if(ndpi_flow->host_server_name[0] != '\0') {
char *doublecol, delimiter = ':';
protocol_processed = true;
/* if <host>:<port> We need to remove ':' */
if((doublecol = (char*)strchr((const char*)ndpi_flow->host_server_name, delimiter)) != NULL)
doublecol[0] = '\0';
if(srv_host) {
char buf[64];
Host *srv = get_real_server();
/* Check if the name isn't numeric */
if(strcmp((const char*)ndpi_flow->host_server_name,
srv->get_ip()->print(buf, sizeof(buf)))) {
aggregateInfo((char*)ndpi_flow->host_server_name, ndpi_detected_protocol,
aggregation_domain_name, true);
if(ntop->getRedis()->getFlowCategory((char*)ndpi_flow->host_server_name,
buf, sizeof(buf), true) != NULL) {
categorization.flow_categorized = true;
categorization.category = strdup(buf);
}
#if 0
if(ndpi_detected_protocol != NDPI_PROTOCOL_HTTP_PROXY) {
srv->setName((char*)ndpi_flow->host_server_name, true);
ntop->getRedis()->setResolvedAddress(srv->get_ip()->print(buf, sizeof(buf)),
(char*)ndpi_flow->host_server_name);
}
#endif
}
if(ndpi_flow->detected_os[0] != '\0') {
aggregateInfo((char*)ndpi_flow->detected_os, NTOPNG_NDPI_OS_PROTO_ID, aggregation_os_name, true);
if(cli_host)
cli_host->setOS((char*)ndpi_flow->detected_os);
}
}
}
break;
} /* switch */
if(protocol_processed
/* For DNS we delay the memory free so that we can let nDPI analyze all the packets of the flow */
&& (ndpi_detected_protocol != NDPI_PROTOCOL_DNS))
deleteFlowMemory();
makeVerdict();
}
/* *************************************** */
/* This method is used to decide whether this flow must pass or not */
#if 0
static u_int is_skype_asn(int asn) {
switch(asn) {
case 8075:
case 9763:
return(true);
}
return(false);
}
#endif
void Flow::makeVerdict() {
#if 0
/* Dummy: test skype block */
switch(ndpi_detected_protocol) {
case NDPI_PROTOCOL_UNKNOWN:
if(get_cli_host() && get_srv_host()) {
if(is_skype_asn(get_cli_host()->get_asn())
|| is_skype_asn(get_srv_host()->get_asn()))
pass_verdict = false;
}
break;
case NDPI_PROTOCOL_SSL_NO_CERT:
case NDPI_PROTOCOL_SKYPE:
pass_verdict = false;
break;
}
#endif
}
/* *************************************** */
void Flow::guessProtocol() {
detection_completed = true; /* We give up */
if((protocol == IPPROTO_TCP)
|| (protocol == IPPROTO_UDP)) {
/* We can guess the protocol */
ndpi_detected_protocol = ndpi_guess_undetected_protocol(iface->get_ndpi_struct(), protocol,
ntohl(cli_host->get_ip()->get_ipv4()),
ntohs(cli_port),
ntohl(srv_host->get_ip()->get_ipv4()),
ntohs(srv_port));
}
}
/* *************************************** */
void Flow::setDetectedProtocol(u_int16_t proto_id) {
if((ndpi_flow != NULL)
|| (!iface->is_ndpi_enabled())) {
if(proto_id != NDPI_PROTOCOL_UNKNOWN) {
ndpi_detected_protocol = proto_id;
processDetectedProtocol();
detection_completed = true;
} else if((((cli2srv_packets+srv2cli_packets) > NDPI_MIN_NUM_PACKETS)
&& (cli_host != NULL)
&& (srv_host != NULL))
|| (!iface->is_ndpi_enabled())) {
guessProtocol();
}
//if(detection_completed) deleteFlowMemory();
}
}
/* *************************************** */
void Flow::setJSONInfo(const char *json) {
if(json == NULL) return;
if(json_info != NULL) free(json_info);
json_info = strdup(json);
}
/* *************************************** */
int Flow::compare(Flow *fb) {
int c;
if((cli_host == NULL) || (srv_host == NULL)) return(-1);
if(vlanId < fb->vlanId) return(-1); else { if(vlanId > fb->vlanId) return(1); }
c = cli_host->compare(fb->get_cli_host()); if(c < 0) return(-1); else { if(c > 0) return(1); }
if(cli_port < fb->cli_port) return(-1); else { if(cli_port > fb->cli_port) return(1); }
c = srv_host->compare(fb->get_srv_host()); if(c < 0) return(-1); else { if(c > 0) return(1); }
if(srv_port < fb->srv_port) return(-1); else { if(srv_port > fb->srv_port) return(1); }
if(protocol < fb->protocol) return(-1); else { if(protocol > fb->protocol) return(1); }
return(0);
}
/* *************************************** */
/*
* A faster replacement for inet_ntoa().
*/
char* Flow::intoaV4(unsigned int addr, char* buf, u_short bufLen) {
char *cp, *retStr;
int n;
cp = &buf[bufLen];
*--cp = '\0';
n = 4;
do {
u_int 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 srccase */
retStr = (char*)(cp+1);
return(retStr);
}
/* *************************************** */
u_int64_t Flow::get_current_bytes_cli2srv() {
int64_t diff = cli2srv_bytes - cli2srv_last_bytes;
/*
We need to do this as due to concurrency issues,
we might have a negative value
*/
return((diff > 0) ? diff : 0);
};
/* *************************************** */
u_int64_t Flow::get_current_bytes_srv2cli() {
int64_t diff = srv2cli_bytes - srv2cli_last_bytes;
/*
We need to do this as due to concurrency issues,
we might have a negative value
*/
return((diff > 0) ? diff : 0);
};
/* *************************************** */
u_int64_t Flow::get_current_packets_cli2srv() {
int64_t diff = cli2srv_packets - cli2srv_last_packets;
/*
We need to do this as due to concurrency issues,
we might have a negative value
*/
return((diff > 0) ? diff : 0);
};
/* *************************************** */
u_int64_t Flow::get_current_packets_srv2cli() {
int64_t diff = srv2cli_packets - srv2cli_last_packets;
/*
We need to do this as due to concurrency issues,
we might have a negative value
*/
return((diff > 0) ? diff : 0);
};
/* *************************************** */
void Flow::print_peers(lua_State* vm, patricia_tree_t * ptree, bool verbose) {
char buf1[64], buf2[64], buf[256];
Host *src = get_cli_host(), *dst = get_srv_host();
if((src == NULL) || (dst == NULL)) return;
if((!src->match(ptree)) && (!dst->match(ptree)))
return;
lua_newtable(vm);
lua_push_str_table_entry(vm, "client", get_cli_host()->get_ip()->print(buf, sizeof(buf)));
lua_push_int_table_entry(vm, "client.vlan", get_cli_host()->get_vlan_id());
lua_push_str_table_entry(vm, "server", get_srv_host()->get_ip()->print(buf, sizeof(buf)));
lua_push_int_table_entry(vm, "server.vlan", get_srv_host()->get_vlan_id());
lua_push_int_table_entry(vm, "sent", cli2srv_bytes);
lua_push_int_table_entry(vm, "rcvd", srv2cli_bytes);
lua_push_int_table_entry(vm, "sent.last", get_current_bytes_cli2srv());
lua_push_int_table_entry(vm, "rcvd.last", get_current_bytes_srv2cli());
lua_push_int_table_entry(vm, "duration", get_duration());
lua_push_float_table_entry(vm, "client.latitude", get_cli_host()->get_latitude());
lua_push_float_table_entry(vm, "client.longitude", get_cli_host()->get_longitude());
lua_push_float_table_entry(vm, "server.latitude", get_srv_host()->get_latitude());
lua_push_float_table_entry(vm, "server.longitude", get_srv_host()->get_longitude());
if(verbose) {
lua_push_bool_table_entry(vm, "client.private", get_cli_host()->get_ip()->isPrivateAddress());
lua_push_str_table_entry(vm, "client.country", get_cli_host()->get_country() ? get_cli_host()->get_country() : (char*)"");
lua_push_bool_table_entry(vm, "server.private", get_srv_host()->get_ip()->isPrivateAddress());
lua_push_str_table_entry(vm, "server.country", get_srv_host()->get_country() ? get_srv_host()->get_country() : (char*)"");
lua_push_str_table_entry(vm, "client.city", get_cli_host()->get_city() ? get_cli_host()->get_city() : (char*)"");
lua_push_str_table_entry(vm, "server.city", get_srv_host()->get_city() ? get_srv_host()->get_city() : (char*)"");
if(verbose) {
if(((cli2srv_packets+srv2cli_packets) > NDPI_MIN_NUM_PACKETS)
|| (ndpi_detected_protocol != NDPI_PROTOCOL_UNKNOWN)
|| iface->is_ndpi_enabled()
|| iface->is_sprobe_interface())
lua_push_str_table_entry(vm, "proto.ndpi", get_detected_protocol_name());
else
lua_push_str_table_entry(vm, "proto.ndpi", (char*)CONST_TOO_EARLY);
}
}
// Key
/* Too slow */
#if 0
snprintf(buf, sizeof(buf), "%s %s",
src->Host::get_name(buf1, sizeof(buf1), false),
dst->Host::get_name(buf2, sizeof(buf2), false));
#else
/*Use the ip@vlan_id as a key only in case of multi vlan_id, otherwise use only the ip as a key*/
if((get_cli_host()->get_vlan_id() == 0) && (get_srv_host()->get_vlan_id() == 0)) {
snprintf(buf, sizeof(buf), "%s %s",
intoaV4(ntohl(get_cli_ipv4()), buf1, sizeof(buf1)),
intoaV4(ntohl(get_srv_ipv4()), buf2, sizeof(buf2)));
} else {
snprintf(buf, sizeof(buf), "%s@%d %s@%d",
intoaV4(ntohl(get_cli_ipv4()), buf1, sizeof(buf1)),
get_cli_host()->get_vlan_id(),
intoaV4(ntohl(get_srv_ipv4()), buf2, sizeof(buf2)),
get_srv_host()->get_vlan_id());
}
#endif
lua_pushstring(vm, buf);
lua_insert(vm, -2);
lua_settable(vm, -3);
}
/* *************************************** */
char* Flow::print(char *buf, u_int buf_len) {
char buf1[32], buf2[32];
buf[0] = '\0';
if((cli_host == NULL) || (srv_host == NULL)) return(buf);
snprintf(buf, buf_len,
"%s %s:%u > %s:%u [proto: %u/%s][%u/%u pkts][%llu/%llu bytes]\n",
get_protocol_name(),
cli_host->get_ip()->print(buf1, sizeof(buf1)), ntohs(cli_port),
srv_host->get_ip()->print(buf2, sizeof(buf2)), ntohs(srv_port),
ndpi_detected_protocol,
ndpi_get_proto_name(iface->get_ndpi_struct(), ndpi_detected_protocol),
cli2srv_packets, srv2cli_packets,
(long long unsigned) cli2srv_bytes, (long long unsigned) srv2cli_bytes);
return(buf);
}
/* *************************************** */
void Flow::dumpFlow(bool partial_dump) {
if(ntop->getPrefs()->do_dump_flows_on_db()
|| ntop->getPrefs()->do_dump_flows_on_es()
|| ntop->get_export_interface()) {
if(partial_dump) {
time_t now = time(NULL);
if((now - last_db_dump.last_dump) < CONST_DB_DUMP_FREQUENCY)
return;
}
if(ntop->getPrefs()->do_dump_flows_on_db()) {
cli_host->getInterface()->dumpDBFlow(last_seen, partial_dump, this);
} else if(ntop->getPrefs()->do_dump_flows_on_es()) {
cli_host->getInterface()->dumpEsFlow(last_seen, partial_dump, this);
}
if(ntop->get_export_interface()) {
char *json = serialize(partial_dump, false);
if(json) {
ntop->get_export_interface()->export_data(json);
free(json);
}
}
}
}
/* *************************************** */
void Flow::update_hosts_stats(struct timeval *tv) {
u_int64_t sent_packets, sent_bytes, rcvd_packets, rcvd_bytes;
u_int64_t diff_sent_packets, diff_sent_bytes, diff_rcvd_packets, diff_rcvd_bytes;
bool updated = false;
sent_packets = cli2srv_packets, sent_bytes = cli2srv_bytes;
diff_sent_packets = sent_packets - cli2srv_last_packets, diff_sent_bytes = sent_bytes - cli2srv_last_bytes;
prev_cli2srv_last_bytes = cli2srv_last_bytes, prev_cli2srv_last_packets = cli2srv_last_packets;
cli2srv_last_packets = sent_packets, cli2srv_last_bytes = sent_bytes;
rcvd_packets = srv2cli_packets, rcvd_bytes = srv2cli_bytes;
diff_rcvd_packets = rcvd_packets - srv2cli_last_packets, diff_rcvd_bytes = rcvd_bytes - srv2cli_last_bytes;
prev_srv2cli_last_bytes = srv2cli_last_bytes, prev_srv2cli_last_packets = srv2cli_last_packets;
srv2cli_last_packets = rcvd_packets, srv2cli_last_bytes = rcvd_bytes;
if(diff_sent_packets || diff_rcvd_packets) {
if(cli_host)
cli_host->incStats(protocol, ndpi_detected_protocol, diff_sent_packets, diff_sent_bytes,
diff_rcvd_packets, diff_rcvd_bytes);
if(srv_host) {
srv_host->incStats(protocol, ndpi_detected_protocol, diff_rcvd_packets, diff_rcvd_bytes,
diff_sent_packets, diff_sent_bytes);
if(host_server_name)
srv_host->addVirtualHTTPHostRequest(host_server_name,
(sent_bytes == diff_sent_bytes) ? 1 : 0,
diff_sent_bytes, diff_rcvd_bytes);
}
}
if(aggregationInfo.name) {
StringHost *host = iface->findHostByString(NULL /* all hosts */, aggregationInfo.name, ndpi_detected_protocol, true);
if(host)
host->incStats(protocol, ndpi_detected_protocol, diff_rcvd_packets, diff_rcvd_bytes,
diff_sent_packets, diff_sent_bytes);
}
if(last_update_time.tv_sec > 0) {
float tdiff_msec = ((float)(tv->tv_sec-last_update_time.tv_sec)*1000)+((tv->tv_usec-last_update_time.tv_usec)/(float)1000);
if(tdiff_msec >= 1000 /* Do not updated when less than 1 second (1000 msec) */) {
// bps
u_int64_t diff_bytes = cli2srv_last_bytes+srv2cli_last_bytes-prev_cli2srv_last_bytes-prev_srv2cli_last_bytes;
float bytes_msec = ((float)(diff_bytes*1000))/tdiff_msec;
if(bytes_msec < 0) bytes_msec = 0; /* Just to be safe */
if((bytes_msec > 0) || iface->is_packet_interface()) {
if(bytes_thpt < bytes_msec) bytes_thpt_trend = trend_up;
else if(bytes_thpt > bytes_msec) bytes_thpt_trend = trend_down;
else bytes_thpt_trend = trend_stable;
if(false)
ntop->getTrace()->traceEvent(TRACE_NORMAL, "[msec: %.1f][bytes: %lu][bits_thpt: %.4f Mbps]",
bytes_msec, diff_bytes, (bytes_thpt*8)/((float)(1024*1024)));
bytes_thpt = bytes_msec;
if(top_bytes_thpt < bytes_thpt) top_bytes_thpt = bytes_thpt;
// pps
u_int64_t diff_pkts = cli2srv_last_packets+srv2cli_last_packets-prev_cli2srv_last_packets-prev_srv2cli_last_packets;
float pkts_msec = ((float)(diff_pkts*1000))/tdiff_msec;
if(pkts_msec < 0) pkts_msec = 0; /* Just to be safe */
if(pkts_thpt < pkts_msec) pkts_thpt_trend = trend_up;
else if(pkts_thpt > pkts_msec) pkts_thpt_trend = trend_down;
else pkts_thpt_trend = trend_stable;
pkts_thpt = pkts_msec;
if(top_pkts_thpt < pkts_thpt) top_pkts_thpt = pkts_thpt;
if(false)
ntop->getTrace()->traceEvent(TRACE_NORMAL, "[msec: %.1f][tdiff: %f][pkts: %lu][pkts_thpt: %.2f pps]",
pkts_msec, tdiff_msec, diff_pkts, pkts_thpt);
updated = true;
}
}
} else
updated = true;
if(updated)
memcpy(&last_update_time, tv, sizeof(struct timeval));
dumpFlow(true);
checkBlacklistedFlow();
}
/* *************************************** */
bool Flow::equal(IpAddress *_cli_ip, IpAddress *_srv_ip, u_int16_t _cli_port,
u_int16_t _srv_port, u_int16_t _vlanId, u_int8_t _protocol,
bool *src2srv_direction) {
if((_vlanId != vlanId) || (_protocol != protocol)) return(false);
if(cli_host && cli_host->equal(_cli_ip) && srv_host && srv_host->equal(_srv_ip)
&& (_cli_port == cli_port) && (_srv_port == srv_port)) {
*src2srv_direction = true;
return(true);
} else if(srv_host && srv_host->equal(_cli_ip) && cli_host && cli_host->equal(_srv_ip)
&& (_srv_port == cli_port) && (_cli_port == srv_port)) {
*src2srv_direction = false;
return(true);
} else
return(false);
}
/* *************************************** */
void Flow::processJson(bool is_src,
json_object *my_object,
ProcessInfo *proc) {
u_int num_id;
const char *str_id;
char jsonbuf[64];
num_id = is_src ? SRC_PROC_PID : DST_PROC_PID;
str_id = is_src ? "SRC_PROC_PID" : "DST_PROC_PID";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_int64(proc->pid));
num_id = is_src ? SRC_FATHER_PROC_PID : DST_FATHER_PROC_PID;
str_id = is_src ? "SRC_FATHER_PROC_PID" : "DST_FATHER_PROC_PID";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_int64(proc->father_pid));
num_id = is_src ? SRC_PROC_NAME : DST_PROC_NAME;
str_id = is_src ? "SRC_PROC_NAME" : "DST_PROC_NAME";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_string(proc->name));
num_id = is_src ? SRC_FATHER_PROC_NAME : DST_FATHER_PROC_NAME;
str_id = is_src ? "SRC_FATHER_PROC_NAME" : "DST_FATHER_PROC_NAME";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_string(proc->father_name));
num_id = is_src ? SRC_PROC_USER_NAME : DST_PROC_USER_NAME;
str_id = is_src ? "SRC_PROC_USER_NAME" : "DST_PROC_USER_NAME";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_string(proc->user_name));
num_id = is_src ? SRC_PROC_ACTUAL_MEMORY : DST_PROC_ACTUAL_MEMORY;
str_id = is_src ? "SRC_PROC_ACTUAL_MEMORY" : "DST_PROC_ACTUAL_MEMORY";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_int(proc->actual_memory));
num_id = is_src ? SRC_PROC_PEAK_MEMORY : DST_PROC_PEAK_MEMORY;
str_id = is_src ? "SRC_PROC_PEAK_MEMORY" : "DST_PROC_PEAK_MEMORY";
json_object_object_add(my_object,
Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_int(proc->peak_memory));
num_id = is_src ? SRC_PROC_AVERAGE_CPU_LOAD : DST_PROC_AVERAGE_CPU_LOAD;
str_id = is_src ? "SRC_PROC_AVERAGE_CPU_LOAD" : "DST_PROC_AVERAGE_CPU_LOAD";
json_object_object_add(my_object, Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_double(proc->average_cpu_load));
num_id = is_src ? SRC_PROC_NUM_PAGE_FAULTS : DST_PROC_NUM_PAGE_FAULTS;
str_id = is_src ? "SRC_PROC_NUM_PAGE_FAULTS" : "DST_PROC_NUM_PAGE_FAULTS";
json_object_object_add(my_object,
Utils::jsonLabel(num_id, str_id, jsonbuf, sizeof(jsonbuf)),
json_object_new_int(proc->num_vm_page_faults));
}
/* *************************************** */
void Flow::processLua(lua_State* vm, ProcessInfo *proc, bool client) {
Host *src = get_cli_host(), *dst = get_srv_host();
if((src == NULL) || (dst == NULL)) return;
lua_newtable(vm);
lua_push_int_table_entry(vm, "pid", proc->pid);
lua_push_int_table_entry(vm, "father_pid", proc->father_pid);
lua_push_str_table_entry(vm, "name", proc->name);
lua_push_str_table_entry(vm, "father_name", proc->father_name);
lua_push_str_table_entry(vm, "user_name", proc->user_name);
lua_push_int_table_entry(vm, "actual_memory", proc->actual_memory);
lua_push_int_table_entry(vm, "peak_memory", proc->peak_memory);
lua_push_float_table_entry(vm, "average_cpu_load", proc->average_cpu_load);
lua_push_float_table_entry(vm, "percentage_iowait_time", proc->percentage_iowait_time);
lua_push_int_table_entry(vm, "num_vm_page_faults", proc->num_vm_page_faults);
lua_pushstring(vm, client ? "client_process" : "server_process");
lua_insert(vm, -2);
lua_settable(vm, -3);
}
/* *************************************** */
void Flow::lua(lua_State* vm, patricia_tree_t * ptree, bool detailed_dump) {
char buf[64];
Host *src = get_cli_host(), *dst = get_srv_host();
bool src_match, dst_match;
if((src == NULL) || (dst == NULL)) return;
src_match = src->match(ptree), dst_match = dst->match(ptree);
if((!src_match) && (!dst_match))return;
lua_newtable(vm);
if(get_cli_host()) {
if(detailed_dump) lua_push_str_table_entry(vm, "cli.host", get_cli_host()->get_name(buf, sizeof(buf), false));
lua_push_int_table_entry(vm, "cli.source_id", get_cli_host()->getSourceId());
lua_push_str_table_entry(vm, "cli.ip", get_cli_host()->get_ip()->print(buf, sizeof(buf)));
lua_push_bool_table_entry(vm, "cli.systemhost", get_cli_host()->isSystemHost());
lua_push_bool_table_entry(vm, "cli.allowed_host", src_match);
lua_push_int32_table_entry(vm, "cli.network_id", get_cli_host()->get_local_network_id());
} else {
lua_push_nil_table_entry(vm, "cli.host");
lua_push_nil_table_entry(vm, "cli.ip");
}
lua_push_int_table_entry(vm, "cli.port", get_cli_port());
if(get_srv_host()) {
if(detailed_dump) lua_push_str_table_entry(vm, "srv.host", get_srv_host()->get_name(buf, sizeof(buf), false));
lua_push_int_table_entry(vm, "srv.source_id", get_cli_host()->getSourceId());
lua_push_str_table_entry(vm, "srv.ip", get_srv_host()->get_ip()->print(buf, sizeof(buf)));
lua_push_bool_table_entry(vm, "srv.systemhost", get_srv_host()->isSystemHost());
lua_push_bool_table_entry(vm, "srv.allowed_host", dst_match);
lua_push_int32_table_entry(vm, "srv.network_id", get_srv_host()->get_local_network_id());
} else {
lua_push_nil_table_entry(vm, "srv.host");
lua_push_nil_table_entry(vm, "srv.ip");
}
lua_push_int_table_entry(vm, "srv.port", get_srv_port());
lua_push_int_table_entry(vm, "vlan", get_vlan_id());
lua_push_str_table_entry(vm, "proto.l4", get_protocol_name());
if(((cli2srv_packets+srv2cli_packets) > NDPI_MIN_NUM_PACKETS)
|| (ndpi_detected_protocol != NDPI_PROTOCOL_UNKNOWN)
|| iface->is_ndpi_enabled()
|| iface->is_sprobe_interface()) {
lua_push_str_table_entry(vm, "proto.ndpi", get_detected_protocol_name());
} else {
lua_push_str_table_entry(vm, "proto.ndpi", (char*)CONST_TOO_EARLY);
}
lua_push_str_table_entry(vm, "proto.ndpi_breed", get_protocol_breed_name());
lua_push_int_table_entry(vm, "bytes", cli2srv_bytes+srv2cli_bytes);
lua_push_int_table_entry(vm, "bytes.last", get_current_bytes_cli2srv() + get_current_bytes_srv2cli());
lua_push_int_table_entry(vm, "packets", cli2srv_packets+srv2cli_packets);
lua_push_int_table_entry(vm, "packets.last", get_current_packets_cli2srv() + get_current_packets_srv2cli());
lua_push_int_table_entry(vm, "seen.first", get_first_seen());
lua_push_int_table_entry(vm, "seen.last", get_last_seen());
lua_push_int_table_entry(vm, "duration", get_duration());
lua_push_int_table_entry(vm, "cli2srv.bytes", cli2srv_bytes);
lua_push_int_table_entry(vm, "srv2cli.bytes", srv2cli_bytes);
lua_push_int_table_entry(vm, "cli2srv.packets", cli2srv_packets);
lua_push_int_table_entry(vm, "srv2cli.packets", srv2cli_packets);
lua_push_bool_table_entry(vm, "verdict.pass", pass_verdict);
if(protocol == IPPROTO_TCP) {
lua_push_bool_table_entry(vm, "tcp.seq_problems",
(tcp_stats_s2d.pktRetr
| tcp_stats_s2d.pktOOO
| tcp_stats_s2d.pktLost
| tcp_stats_d2s.pktRetr
| tcp_stats_d2s.pktOOO
| tcp_stats_d2s.pktLost) ? true : false);
lua_push_float_table_entry(vm, "tcp.nw_latency.client", toMs(&clientNwLatency));
lua_push_float_table_entry(vm, "tcp.nw_latency.server", toMs(&serverNwLatency));
}
if(detailed_dump) {
if(host_server_name) lua_push_str_table_entry(vm, "host_server_name", host_server_name);
lua_push_int_table_entry(vm, "tcp_flags", getTcpFlags());
lua_push_str_table_entry(vm, "category", categorization.category ? categorization.category : (char*)"");
if(protocol == IPPROTO_TCP) {
lua_push_int_table_entry(vm, "cli2srv.retransmissions", tcp_stats_s2d.pktRetr);
lua_push_int_table_entry(vm, "cli2srv.out_of_order", tcp_stats_s2d.pktOOO);
lua_push_int_table_entry(vm, "cli2srv.lost", tcp_stats_s2d.pktLost);
lua_push_int_table_entry(vm, "srv2cli.retransmissions", tcp_stats_d2s.pktRetr);
lua_push_int_table_entry(vm, "srv2cli.out_of_order", tcp_stats_d2s.pktOOO);
lua_push_int_table_entry(vm, "srv2cli.lost", tcp_stats_d2s.pktLost);
}
if(dns.last_query)
lua_push_str_table_entry(vm, "dns.last_query", dns.last_query);
if(http.last_method && http.last_url) {
lua_push_str_table_entry(vm, "http.last_url", http.last_url);
lua_push_str_table_entry(vm, "http.last_method", http.last_method);
lua_push_int_table_entry(vm, "http.last_return_code", http.last_return_code);
}
} else {
if(dns.last_query)
lua_push_str_table_entry(vm, "dns.last_query", dns.last_query);
if(http.last_method && http.last_url)
lua_push_str_table_entry(vm, "http.last_url", http.last_url);
}
lua_push_str_table_entry(vm, "moreinfo.json", get_json_info());
if(client_proc) processLua(vm, client_proc, true);
if(server_proc) processLua(vm, server_proc, false);
lua_push_float_table_entry(vm, "top_throughput_bps", top_bytes_thpt);
lua_push_float_table_entry(vm, "throughput_bps", bytes_thpt);
lua_push_int_table_entry(vm, "throughput_trend_bps", bytes_thpt_trend);
// ntop->getTrace()->traceEvent(TRACE_NORMAL, "[bytes_thpt: %.2f] [bytes_thpt_trend: %d]", bytes_thpt,bytes_thpt_trend);
lua_push_float_table_entry(vm, "top_throughput_pps", top_pkts_thpt);
lua_push_float_table_entry(vm, "throughput_pps", pkts_thpt);
lua_push_int_table_entry(vm, "throughput_trend_pps", pkts_thpt_trend);
// ntop->getTrace()->traceEvent(TRACE_NORMAL, "[pkts_thpt: %.2f] [pkts_thpt_trend: %d]", pkts_thpt,pkts_thpt_trend);