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 $
25 #include <sys/types.h>
26 #include <sys/socket.h>
27 #include <netinet/in.h>
31 #include <sys/ioctl.h>
46 #include "divert_cap.h"
47 #include "traffcounter.h"
49 #define BUFF_LEN (16384) /* max mtu -> lo=16436 TODO why?*/
51 //-----------------------------------------------------------------------------
55 unsigned char buffer[BUFF_LEN];
58 //-----------------------------------------------------------------------------
60 DIVERT_DATA cddiv; //capture data
61 //-----------------------------------------------------------------------------
62 class DIVERT_CAP_CREATOR {
68 : divc(new DIVERT_CAP())
76 DIVERT_CAP * GetCapturer()
81 //-----------------------------------------------------------------------------
82 //-----------------------------------------------------------------------------
83 //-----------------------------------------------------------------------------
84 DIVERT_CAP_CREATOR dcc;
85 //-----------------------------------------------------------------------------
86 //-----------------------------------------------------------------------------
87 //-----------------------------------------------------------------------------
90 return dcc.GetCapturer();
92 //-----------------------------------------------------------------------------
93 //-----------------------------------------------------------------------------
94 //-----------------------------------------------------------------------------
95 const std::string DIVERT_CAP::GetVersion() const
97 return "Divert_cap v.1.0";
99 //-----------------------------------------------------------------------------
100 DIVERT_CAP::DIVERT_CAP()
107 //-----------------------------------------------------------------------------
108 int DIVERT_CAP::Start()
113 if (DivertCapOpen() < 0)
115 errorStr = "Cannot open socket!";
116 printfd(__FILE__, "Cannot open socket\n");
122 if (pthread_create(&thread, NULL, Run, this) == 0)
127 errorStr = "Cannot create thread.";
128 printfd(__FILE__, "Cannot create thread\n");
131 //-----------------------------------------------------------------------------
132 int DIVERT_CAP::Stop()
141 //5 seconds to thread stops itself
143 for (i = 0; i < 25; i++)
151 //after 5 seconds waiting thread still running. now killing it
154 if (pthread_kill(thread, SIGINT))
156 errorStr = "Cannot kill thread.";
157 printfd(__FILE__, "Cannot kill thread\n");
164 //-----------------------------------------------------------------------------
165 void * DIVERT_CAP::Run(void * d)
167 DIVERT_CAP * dc = (DIVERT_CAP *)d;
168 dc->isRunning = true;
174 dc->DivertCapRead(buffer, 64, NULL);
176 if (buffer[12] != 0x8)
179 memcpy(rp.pckt, &buffer[14], pcktSize);
181 dc->traffCnt->Process(rp);
184 dc->isRunning = false;
187 //-----------------------------------------------------------------------------
188 int DIVERT_CAP::DivertCapOpen()
190 memset(&pollddiv, 0, sizeof(pollddiv));
191 memset(&cddiv, 0, sizeof(DIVERT_DATA));
193 strcpy(cddiv.iface, "foo");
197 pollddiv.events = POLLIN;
198 pollddiv.fd = cddiv.sock;
202 //-----------------------------------------------------------------------------
203 int DIVERT_CAP::DivertCapOpen(int)
206 cddiv.sock = socket(PF_INET, SOCK_RAW, IPPROTO_DIVERT);
209 errorStr = "Create divert socket error.";
210 printfd(__FILE__, "Cannot create divert socket\n");
214 struct sockaddr_in divAddr;
216 memset(&divAddr, 0, sizeof(divAddr));
218 divAddr.sin_family = AF_INET;
219 divAddr.sin_port = htons(cddiv.port);
220 divAddr.sin_addr.s_addr = INADDR_ANY;
222 ret = bind(cddiv.sock, (struct sockaddr *)&divAddr, sizeof(divAddr));
226 errorStr = "Bind divert socket error.";
227 printfd(__FILE__, "Cannot bind divert socket\n");
233 //-----------------------------------------------------------------------------
234 int DIVERT_CAP::DivertCapRead(char * b, int blen, char ** iface)
236 poll(&pollddiv, 1, -1);
238 if (pollddiv.revents & POLLIN)
240 DivertCapRead(b, blen, iface, 0);
241 pollddiv.revents = 0;
247 //-----------------------------------------------------------------------------
248 int DIVERT_CAP::DivertCapRead(char * b, int blen, char ** iface, int)
250 static char buf[BUFF_LEN];
251 static struct sockaddr_in divertaddr;
253 static socklen_t divertaddrSize = sizeof(divertaddr);
255 if ((bytes = recvfrom (cddiv.sock, buf, BUFF_LEN,
256 0, (struct sockaddr*) &divertaddr, &divertaddrSize)) > 50)
258 memcpy(b + 14, buf, blen - 14);
262 *iface = cddiv.iface;
264 sendto(cddiv.sock, buf, bytes, 0, (struct sockaddr*)&divertaddr, divertaddrSize);
269 //-----------------------------------------------------------------------------
270 int DIVERT_CAP::DivertCapClose()
275 //-----------------------------------------------------------------------------
276 int DIVERT_CAP::ParseSettings()
280 vector<PARAM_VALUE>::const_iterator pvi;
283 pvi = std::find(settings.moduleParams.begin(), settings.moduleParams.end(), pv);
284 if (pvi == settings.moduleParams.end())
290 if (ParseIntInRange(pvi->value[0], 1, 65535, &p))
292 errorStr = "Cannot parse parameter \'Port\': " + errorStr;
293 printfd(__FILE__, "Cannot parse parameter 'Port'\n");
301 //-----------------------------------------------------------------------------
302 int DIVERT_CAP::ParseIntInRange(const std::string & str, int min, int max, int * val)
304 if (str2x(str.c_str(), *val))
306 errorStr = "Incorrect value \'" + str + "\'.";
309 if (*val < min || *val > max)
311 errorStr = "Value \'" + str + "\' out of range.";
316 //-----------------------------------------------------------------------------