2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Author : Maxim Mamontov <faust@stg.dp.ua>
27 $Date: 2010/09/10 06:41:06 $
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
42 #include "stg/common.h"
43 #include "stg/raw_ip_packet.h"
44 #include "stg/traffcounter.h"
45 #include "stg/plugin_creator.h"
48 PLUGIN_CREATOR<NF_CAP> cnc;
52 return cnc.GetPlugin();
69 logger(GetPluginLogger(GetStgLogger(), "cap_nf"))
77 int NF_CAP::ParseSettings()
79 std::vector<PARAM_VALUE>::iterator it;
80 for (it = settings.moduleParams.begin(); it != settings.moduleParams.end(); ++it)
82 if (it->param == "TCPPort")
84 if (str2x(it->value[0], portT))
86 errorStr = "Invalid TCPPort value";
87 printfd(__FILE__, "Error: Invalid TCPPort value\n");
92 if (it->param == "UDPPort")
94 if (str2x(it->value[0], portU))
96 errorStr = "Invalid UDPPort value";
97 printfd(__FILE__, "Error: Invalid UDPPort value\n");
102 printfd(__FILE__, "'%s' is not a valid module param\n", it->param.c_str());
116 if (pthread_create(&tidUDP, NULL, RunUDP, this))
120 errorStr = "Cannot create UDP thread";
121 printfd(__FILE__, "Error: Cannot create UDP thread\n");
132 if (pthread_create(&tidTCP, NULL, RunTCP, this))
136 errorStr = "Cannot create TCP thread";
137 printfd(__FILE__, "Error: Cannot create TCP thread\n");
146 runningTCP = runningUDP = false;
147 if (portU && !stoppedUDP)
150 for (int i = 0; i < 25 && !stoppedUDP; ++i)
152 struct timespec ts = {0, 200000000};
153 nanosleep(&ts, NULL);
157 pthread_join(tidUDP, NULL);
161 if (pthread_kill(tidUDP, SIGUSR1))
163 errorStr = "Error sending signal to UDP thread";
164 printfd(__FILE__, "Error: Error sending signal to UDP thread\n");
167 printfd(__FILE__, "UDP thread NOT stopped\n");
170 if (portT && !stoppedTCP)
173 for (int i = 0; i < 25 && !stoppedTCP; ++i)
175 struct timespec ts = {0, 200000000};
176 nanosleep(&ts, NULL);
180 pthread_join(tidTCP, NULL);
184 if (pthread_kill(tidTCP, SIGUSR1))
186 errorStr = "Error sending signal to TCP thread";
187 printfd(__FILE__, "Error: Error sending signal to TCP thread\n");
190 printfd(__FILE__, "TCP thread NOT stopped\n");
196 bool NF_CAP::OpenUDP()
198 struct sockaddr_in sin;
199 sockUDP = socket(PF_INET, SOCK_DGRAM, 0);
202 errorStr = "Error opening UDP socket";
203 printfd(__FILE__, "Error: Error opening UDP socket\n");
206 sin.sin_family = AF_INET;
207 sin.sin_port = htons(portU);
208 sin.sin_addr.s_addr = inet_addr("0.0.0.0");
209 if (bind(sockUDP, (struct sockaddr *)&sin, sizeof(sin)))
211 errorStr = "Error binding UDP socket";
212 printfd(__FILE__, "Error: Error binding UDP socket\n");
218 bool NF_CAP::OpenTCP()
220 struct sockaddr_in sin;
221 sockTCP = socket(PF_INET, SOCK_STREAM, 0);
224 errorStr = "Error opening TCP socket";
225 printfd(__FILE__, "Error: Error opening TCP socket\n");
228 sin.sin_family = AF_INET;
229 sin.sin_port = htons(portT);
230 sin.sin_addr.s_addr = inet_addr("0.0.0.0");
231 if (bind(sockTCP, (struct sockaddr *)&sin, sizeof(sin)))
233 errorStr = "Error binding TCP socket";
234 printfd(__FILE__, "Error: Error binding TCP socket\n");
237 if (listen(sockTCP, 1))
239 errorStr = "Error listening on TCP socket";
240 printfd(__FILE__, "Error: Error listening TCP socket\n");
246 void * NF_CAP::RunUDP(void * c)
249 sigfillset(&signalSet);
250 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
252 NF_CAP * cap = static_cast<NF_CAP *>(c);
253 uint8_t buf[BUF_SIZE];
255 struct sockaddr_in sin;
257 cap->stoppedUDP = false;
258 while (cap->runningUDP)
260 if (!WaitPackets(cap->sockUDP))
267 res = recvfrom(cap->sockUDP, buf, BUF_SIZE, 0, reinterpret_cast<struct sockaddr *>(&sin), &slen);
268 if (!cap->runningUDP)
280 cap->errorStr = "Invalid data received";
281 printfd(__FILE__, "Error: Invalid data received through UDP\n");
286 cap->ParseBuffer(buf, res);
288 cap->stoppedUDP = true;
292 void * NF_CAP::RunTCP(void * c)
295 sigfillset(&signalSet);
296 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
298 NF_CAP * cap = static_cast<NF_CAP *>(c);
299 uint8_t buf[BUF_SIZE];
302 struct sockaddr_in sin;
304 cap->stoppedTCP = false;
305 while (cap->runningTCP)
307 if (!WaitPackets(cap->sockTCP))
314 sd = accept(cap->sockTCP, reinterpret_cast<struct sockaddr *>(&sin), &slen);
315 if (!cap->runningTCP)
322 cap->errorStr = "Error accepting connection";
323 printfd(__FILE__, "Error: Error accepting connection\n");
328 if (!WaitPackets(sd))
334 res = recv(sd, buf, BUF_SIZE, MSG_WAITALL);
337 if (!cap->runningTCP)
346 // Need to check actual data length and wait all data to receive
351 cap->errorStr = "Invalid data received";
352 printfd(__FILE__, "Error: Invalid data received through TCP\n");
357 cap->ParseBuffer(buf, res);
359 cap->stoppedTCP = true;
363 void NF_CAP::ParseBuffer(uint8_t * buf, int size)
366 NF_HEADER * hdr = reinterpret_cast<NF_HEADER *>(buf);
367 if (htons(hdr->version) != 5)
372 int packets = htons(hdr->count);
374 if (packets < 0 || packets > 30)
379 if (24 + 48 * packets != size)
381 // See 'wrong logic' upper
385 for (int i = 0; i < packets; ++i)
387 NF_DATA * data = reinterpret_cast<NF_DATA *>(buf + 24 + i * 48);
389 ip.rawPacket.header.ipHeader.ip_v = 4;
390 ip.rawPacket.header.ipHeader.ip_hl = 5;
391 ip.rawPacket.header.ipHeader.ip_p = data->proto;
392 ip.dataLen = ntohl(data->octets);
393 ip.rawPacket.header.ipHeader.ip_src.s_addr = data->srcAddr;
394 ip.rawPacket.header.ipHeader.ip_dst.s_addr = data->dstAddr;
395 ip.rawPacket.header.sPort = data->srcPort;
396 ip.rawPacket.header.dPort = data->dstPort;
398 traffCnt->Process(ip);