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
18 * Author : Boris Mikhailenko <stg34@stg.dp.ua>
23 $Date: 2010/09/10 06:43:03 $
26 #include <sys/types.h>
27 #include <sys/socket.h>
28 #include <netinet/in.h>
33 #include <sys/ioctl.h>
43 #include "divert_cap.h"
44 #include "traffcounter.h"
46 #define BUFF_LEN (16384) /* max mtu -> lo=16436 TODO why?*/
48 //-----------------------------------------------------------------------------
52 unsigned char buffer[BUFF_LEN];
55 //-----------------------------------------------------------------------------
57 DIVERT_DATA cddiv; //capture data
58 //-----------------------------------------------------------------------------
59 class DIVERT_CAP_CREATOR {
65 : divc(new DIVERT_CAP())
73 DIVERT_CAP * GetCapturer()
78 //-----------------------------------------------------------------------------
79 //-----------------------------------------------------------------------------
80 //-----------------------------------------------------------------------------
81 DIVERT_CAP_CREATOR dcc;
82 //-----------------------------------------------------------------------------
83 //-----------------------------------------------------------------------------
84 //-----------------------------------------------------------------------------
87 return dcc.GetCapturer();
89 //-----------------------------------------------------------------------------
90 //-----------------------------------------------------------------------------
91 //-----------------------------------------------------------------------------
92 const std::string DIVERT_CAP::GetVersion() const
94 return "Divert_cap v.1.0";
96 //-----------------------------------------------------------------------------
97 DIVERT_CAP::DIVERT_CAP()
104 //-----------------------------------------------------------------------------
105 int DIVERT_CAP::Start()
110 if (DivertCapOpen() < 0)
112 errorStr = "Cannot open socket!";
113 printfd(__FILE__, "Cannot open socket\n");
119 if (pthread_create(&thread, NULL, Run, this) == 0)
124 errorStr = "Cannot create thread.";
125 printfd(__FILE__, "Cannot create thread\n");
128 //-----------------------------------------------------------------------------
129 int DIVERT_CAP::Stop()
138 //5 seconds to thread stops itself
140 for (i = 0; i < 25; i++)
148 //after 5 seconds waiting thread still running. now killing it
151 if (pthread_kill(thread, SIGINT))
153 errorStr = "Cannot kill thread.";
154 printfd(__FILE__, "Cannot kill thread\n");
161 //-----------------------------------------------------------------------------
162 void * DIVERT_CAP::Run(void * d)
164 DIVERT_CAP * dc = (DIVERT_CAP *)d;
165 dc->isRunning = true;
171 dc->DivertCapRead(buffer, 64, NULL);
173 if (buffer[12] != 0x8)
176 memcpy(rp.pckt, &buffer[14], pcktSize);
178 dc->traffCnt->Process(rp);
181 dc->isRunning = false;
184 //-----------------------------------------------------------------------------
185 int DIVERT_CAP::DivertCapOpen()
187 memset(&pollddiv, 0, sizeof(pollddiv));
188 memset(&cddiv, 0, sizeof(DIVERT_DATA));
190 strcpy(cddiv.iface, "foo");
194 pollddiv.events = POLLIN;
195 pollddiv.fd = cddiv.sock;
199 //-----------------------------------------------------------------------------
200 int DIVERT_CAP::DivertCapOpen(int)
203 cddiv.sock = socket(PF_INET, SOCK_RAW, IPPROTO_DIVERT);
206 errorStr = "Create divert socket error.";
207 printfd(__FILE__, "Cannot create divert socket\n");
211 struct sockaddr_in divAddr;
213 memset(&divAddr, 0, sizeof(divAddr));
215 divAddr.sin_family = AF_INET;
216 divAddr.sin_port = htons(cddiv.port);
217 divAddr.sin_addr.s_addr = INADDR_ANY;
219 ret = bind(cddiv.sock, (struct sockaddr *)&divAddr, sizeof(divAddr));
223 errorStr = "Bind divert socket error.";
224 printfd(__FILE__, "Cannot bind divert socket\n");
230 //-----------------------------------------------------------------------------
231 int DIVERT_CAP::DivertCapRead(char * b, int blen, char ** iface)
233 poll(&pollddiv, 1, -1);
235 if (pollddiv.revents & POLLIN)
237 DivertCapRead(b, blen, iface, 0);
238 pollddiv.revents = 0;
244 //-----------------------------------------------------------------------------
245 int DIVERT_CAP::DivertCapRead(char * b, int blen, char ** iface, int)
247 static char buf[BUFF_LEN];
248 static struct sockaddr_in divertaddr;
250 static socklen_t divertaddrSize = sizeof(divertaddr);
252 if ((bytes = recvfrom (cddiv.sock, buf, BUFF_LEN,
253 0, (struct sockaddr*) &divertaddr, &divertaddrSize)) > 50)
255 memcpy(b + 14, buf, blen - 14);
259 *iface = cddiv.iface;
261 sendto(cddiv.sock, buf, bytes, 0, (struct sockaddr*)&divertaddr, divertaddrSize);
266 //-----------------------------------------------------------------------------
267 int DIVERT_CAP::DivertCapClose()
272 //-----------------------------------------------------------------------------
273 int DIVERT_CAP::ParseSettings()
277 vector<PARAM_VALUE>::const_iterator pvi;
280 pvi = find(settings.moduleParams.begin(), settings.moduleParams.end(), pv);
281 if (pvi == settings.moduleParams.end())
287 if (ParseIntInRange(pvi->value[0], 1, 65535, &p))
289 errorStr = "Cannot parse parameter \'Port\': " + errorStr;
290 printfd(__FILE__, "Cannot parse parameter 'Port'\n");
298 //-----------------------------------------------------------------------------
299 int DIVERT_CAP::ParseIntInRange(const std::string & str, int min, int max, int * val)
301 if (str2x(str.c_str(), *val))
303 errorStr = "Incorrect value \'" + str + "\'.";
306 if (*val < min || *val > max)
308 errorStr = "Value \'" + str + "\' out of range.";
313 //-----------------------------------------------------------------------------