projects/stargazer/traffcounter_impl.cpp

   1 /*
   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.
   6  *
   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.
  11  *
  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
  15  */
  16
  17 /*
  18  *    Date: 27.10.2002
  19  */
  20
  21 /*
  22  *    Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
  23  */
  24
  25 /*
  26  $Revision: 1.58 $
  27  $Date: 2010/11/03 11:28:07 $
  28  $Author: faust $
  29  */
  30
  31 /* inet_aton */
  32 #include <sys/types.h>
  33 #include <sys/socket.h>
  34 #include <netinet/in.h>
  35 #include <arpa/inet.h>
  36
  37 #include <csignal>
  38 #include <cassert>
  39 #include <cstdio> // fopen and similar
  40
  41 #include "stg/common.h"
  42 #include "stg/locker.h"
  43 #include "traffcounter_impl.h"
  44 #include "stg_timer.h"
  45 #include "users_impl.h"
  46
  47 #define FLUSH_TIME  (10)
  48 #define REMOVE_TIME  (31)
  49
  50 const char protoName[PROTOMAX][8] =
  51 {"TCP", "UDP", "ICMP", "TCP_UDP", "ALL"};
  52
  53 enum protoNum
  54 {
  55 tcp = 0, udp, icmp, tcp_udp, all
  56 };
  57
  58 //-----------------------------------------------------------------------------
  59 TRAFFCOUNTER_IMPL::TRAFFCOUNTER_IMPL(USERS_IMPL * u, const std::string & fn)
  60     : WriteServLog(GetStgLogger()),
  61       rulesFileName(fn),
  62       monitoring(false),
  63       users(u),
  64       running(false),
  65       stopped(true),
  66       addUserNotifier(*this),
  67       delUserNotifier(*this)
  68 {
  69 for (int i = 0; i < DIR_NUM; i++)
  70     strprintf(&dirName[i], "DIR%d", i);
  71
  72 dirName[DIR_NUM] = "NULL";
  73
  74 users->AddNotifierUserAdd(&addUserNotifier);
  75 users->AddNotifierUserDel(&delUserNotifier);
  76
  77 pthread_mutex_init(&mutex, NULL);
  78 }
  79 //-----------------------------------------------------------------------------
  80 TRAFFCOUNTER_IMPL::~TRAFFCOUNTER_IMPL()
  81 {
  82 pthread_mutex_destroy(&mutex);
  83 }
  84 //-----------------------------------------------------------------------------
  85 int TRAFFCOUNTER_IMPL::Start()
  86 {
  87 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
  88
  89 if (!stopped)
  90     return 0;
  91
  92 if (ReadRules())
  93     {
  94     printfd(__FILE__, "TRAFFCOUNTER_IMPL::Start() - Cannot read rules\n");
  95     WriteServLog("TRAFFCOUNTER: Cannot read rules.");
  96     return -1;
  97     }
  98
  99 printfd(__FILE__, "TRAFFCOUNTER::Start()\n");
 100 int h = users->OpenSearch();
 101 USER_IMPL * u;
 102 if (!h)
 103     {
 104     printfd(__FILE__, "TRAFFCOUNTER_IMPL::Start() - Cannot get users\n");
 105     WriteServLog("TRAFFCOUNTER: Cannot get users.");
 106     return -1;
 107     }
 108
 109 while (users->SearchNext(h, &u) == 0)
 110     {
 111     SetUserNotifiers(u);
 112     }
 113 users->CloseSearch(h);
 114
 115 running = true;
 116 if (pthread_create(&thread, NULL, Run, this))
 117     {
 118     printfd(__FILE__, "TRAFFCOUNTER_IMPL::Start() - Cannot start thread\n");
 119     WriteServLog("TRAFFCOUNTER: Error: Cannot start thread.");
 120     return -1;
 121     }
 122 return 0;
 123 }
 124 //-----------------------------------------------------------------------------
 125 int TRAFFCOUNTER_IMPL::Stop()
 126 {
 127 if (stopped)
 128     return 0;
 129
 130 running = false;
 131
 132 int h = users->OpenSearch();
 133 if (!h)
 134     {
 135     WriteServLog("TRAFFCOUNTER: Fatal error: Cannot get users.");
 136     return -1;
 137     }
 138
 139 USER_IMPL * u;
 140 while (users->SearchNext(h, &u) == 0)
 141     {
 142     UnSetUserNotifiers(u);
 143     }
 144 users->CloseSearch(h);
 145
 146 //5 seconds to thread stops itself
 147 struct timespec ts = {0, 200000000};
 148 for (int i = 0; i < 25 && !stopped; i++)
 149     {
 150     nanosleep(&ts, NULL);
 151     }
 152
 153 //after 5 seconds waiting thread still running. now kill it
 154 if (!stopped)
 155     {
 156     printfd(__FILE__, "kill TRAFFCOUNTER thread.\n");
 157     if (pthread_kill(thread, SIGINT))
 158         {
 159         return -1;
 160         }
 161     printfd(__FILE__, "TRAFFCOUNTER killed\n");
 162     }
 163 printfd(__FILE__, "TRAFFCOUNTER::Stop()\n");
 164
 165 return 0;
 166 }
 167 //-----------------------------------------------------------------------------
 168 void * TRAFFCOUNTER_IMPL::Run(void * data)
 169 {
 170 TRAFFCOUNTER_IMPL * tc = static_cast<TRAFFCOUNTER_IMPL *>(data);
 171 tc->stopped = false;
 172 int c = 0;
 173
 174 time_t touchTime = stgTime - MONITOR_TIME_DELAY_SEC;
 175 struct timespec ts = {0, 500000000};
 176 while (tc->running)
 177     {
 178     nanosleep(&ts, 0);
 179     if (!tc->running)
 180         {
 181         tc->FlushAndRemove();
 182         break;
 183         }
 184
 185     if (tc->monitoring && (touchTime + MONITOR_TIME_DELAY_SEC <= stgTime))
 186         {
 187         std::string monFile(tc->monitorDir + "/traffcounter_r");
 188         printfd(__FILE__, "Monitor=%d file TRAFFCOUNTER %s\n", tc->monitoring, monFile.c_str());
 189         touchTime = stgTime;
 190         TouchFile(monFile.c_str());
 191         }
 192
 193     if (++c % FLUSH_TIME == 0)
 194         tc->FlushAndRemove();
 195     }
 196
 197 tc->stopped = true;
 198 return NULL;
 199 }
 200 //-----------------------------------------------------------------------------
 201 void TRAFFCOUNTER_IMPL::Process(const RAW_PACKET & rawPacket)
 202 {
 203 if (!running)
 204     return;
 205
 206 static time_t touchTime = stgTime - MONITOR_TIME_DELAY_SEC;
 207
 208 if (monitoring && (touchTime + MONITOR_TIME_DELAY_SEC <= stgTime))
 209     {
 210     static std::string monFile = monitorDir + "/traffcounter_p";
 211     printfd(__FILE__, "Monitor=%d file TRAFFCOUNTER %s\n", monitoring, monFile.c_str());
 212     touchTime = stgTime;
 213     TouchFile(monFile.c_str());
 214     }
 215
 216 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 217
 218 //printfd(__FILE__, "TRAFFCOUNTER::Process()\n");
 219 //TODO replace find with lower_bound.
 220
 221 // Searching a new packet in a tree.
 222 pp_iter pi = packets.find(rawPacket);
 223
 224 // Packet found - update length and time
 225 if (pi != packets.end())
 226     {
 227     pi->second.lenU += rawPacket.GetLen();
 228     pi->second.lenD += rawPacket.GetLen();
 229     pi->second.updateTime = stgTime;
 230     /*printfd(__FILE__, "=============================\n");
 231     printfd(__FILE__, "Packet found!\n");
 232     printfd(__FILE__, "Version=%d\n", rawPacket.GetIPVersion());
 233     printfd(__FILE__, "HeaderLen=%d\n", rawPacket.GetHeaderLen());
 234     printfd(__FILE__, "PacketLen=%d\n", rawPacket.GetLen());
 235     printfd(__FILE__, "SIP=%s\n", inet_ntostring(rawPacket.GetSrcIP()).c_str());
 236     printfd(__FILE__, "DIP=%s\n", inet_ntostring(rawPacket.GetDstIP()).c_str());
 237     printfd(__FILE__, "src port=%d\n", rawPacket.GetSrcPort());
 238     printfd(__FILE__, "pst port=%d\n", rawPacket.GetDstPort());
 239     printfd(__FILE__, "len=%d\n", rawPacket.GetLen());
 240     printfd(__FILE__, "proto=%d\n", rawPacket.GetProto());
 241     printfd(__FILE__, "PacketDirU=%d\n", pi->second.dirU);
 242     printfd(__FILE__, "PacketDirD=%d\n", pi->second.dirD);
 243     printfd(__FILE__, "=============================\n");*/
 244     return;
 245     }
 246
 247 PACKET_EXTRA_DATA ed;
 248
 249 // Packet not found - add new packet
 250
 251 ed.updateTime = stgTime;
 252 ed.flushTime = stgTime;
 253
 254 /*
 255  userU is that whose user_ip == packet_ip_src
 256  userD is that whose user_ip == packet_ip_dst
 257  */
 258
 259 uint32_t ipU = rawPacket.GetSrcIP();
 260 uint32_t ipD = rawPacket.GetDstIP();
 261
 262 // Searching users with such IP
 263 if (users->FindByIPIdx(ipU, &ed.userU) == 0)
 264     {
 265     ed.userUPresent = true;
 266     }
 267
 268 if (users->FindByIPIdx(ipD, &ed.userD) == 0)
 269     {
 270     ed.userDPresent = true;
 271     }
 272
 273 if (ed.userUPresent ||
 274     ed.userDPresent)
 275     {
 276     DeterminateDir(rawPacket, &ed.dirU, &ed.dirD);
 277
 278     ed.lenD = ed.lenU = rawPacket.GetLen();
 279
 280     //TODO use result of lower_bound to inserting new record
 281
 282     // Adding packet to a tree.
 283     std::pair<pp_iter, bool> insertResult = packets.insert(std::make_pair(rawPacket, ed));
 284     pp_iter newPacket = insertResult.first;
 285
 286     // Adding packet reference to an IP index.
 287     ip2packets.insert(std::make_pair(ipU, newPacket));
 288     ip2packets.insert(std::make_pair(ipD, newPacket));
 289     }
 290 }
 291 //-----------------------------------------------------------------------------
 292 void TRAFFCOUNTER_IMPL::FlushAndRemove()
 293 {
 294 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 295
 296 int oldPacketsSize = packets.size();
 297 int oldIp2packetsSize = ip2packets.size();
 298
 299 pp_iter pi;
 300 pi = packets.begin();
 301 std::map<RAW_PACKET, PACKET_EXTRA_DATA> newPackets;
 302 ip2packets.erase(ip2packets.begin(), ip2packets.end());
 303 while (pi != packets.end())
 304     {
 305     //Flushing
 306     if (stgTime - pi->second.flushTime > FLUSH_TIME)
 307         {
 308         if (pi->second.userUPresent)
 309             {
 310             //printfd(__FILE__, "+++ Flushing U user %s (%s:%d) of length %d\n", pi->second.userU->GetLogin().c_str(), inet_ntostring(pi->first.GetSrcIP()).c_str(), pi->first.GetSrcPort(), pi->second.lenU);
 311
 312             // Add stat
 313             if (pi->second.dirU < DIR_NUM)
 314                 {
 315                 #ifdef TRAFF_STAT_WITH_PORTS
 316                 pi->second.userU->AddTraffStatU(pi->second.dirU,
 317                                                 pi->first.GetDstIP(),
 318                                                 pi->first.GetDstPort(),
 319                                                 pi->second.lenU);
 320                 #else
 321                 pi->second.userU->AddTraffStatU(pi->second.dirU,
 322                                                 pi->first.GetDstIP(),
 323                                                 pi->second.lenU);
 324                 #endif
 325                 }
 326
 327             pi->second.lenU = 0;
 328             pi->second.flushTime = stgTime;
 329             }
 330
 331         if (pi->second.userDPresent)
 332             {
 333             //printfd(__FILE__, "+++ Flushing D user %s (%s:%d) of length %d\n", pi->second.userD->GetLogin().c_str(), inet_ntostring(pi->first.GetDstIP()).c_str(), pi->first.GetDstPort(), pi->second.lenD);
 334
 335             // Add stat
 336             if (pi->second.dirD < DIR_NUM)
 337                 {
 338                 #ifdef TRAFF_STAT_WITH_PORTS
 339                 pi->second.userD->AddTraffStatD(pi->second.dirD,
 340                                                 pi->first.GetSrcIP(),
 341                                                 pi->first.GetSrcPort(),
 342                                                 pi->second.lenD);
 343                 #else
 344                 pi->second.userD->AddTraffStatD(pi->second.dirD,
 345                                                 pi->first.GetSrcIP(),
 346                                                 pi->second.lenD);
 347                 #endif
 348                 }
 349
 350             pi->second.lenD = 0;
 351             pi->second.flushTime = stgTime;
 352             }
 353         }
 354
 355     if (stgTime - pi->second.updateTime < REMOVE_TIME)
 356         {
 357         std::pair<pp_iter, bool> res = newPackets.insert(*pi);
 358         if (res.second)
 359             {
 360             ip2packets.insert(std::make_pair(pi->first.GetSrcIP(), res.first));
 361             ip2packets.insert(std::make_pair(pi->first.GetDstIP(), res.first));
 362             }
 363         }
 364     ++pi;
 365     }
 366 swap(packets, newPackets);
 367 printfd(__FILE__, "FlushAndRemove() packets: %d(rem %d) ip2packets: %d(rem %d)\n",
 368         packets.size(),
 369         oldPacketsSize - packets.size(),
 370         ip2packets.size(),
 371         oldIp2packetsSize - ip2packets.size());
 372
 373 }
 374 //-----------------------------------------------------------------------------
 375 void TRAFFCOUNTER_IMPL::AddUser(USER_IMPL * user)
 376 {
 377 printfd(__FILE__, "AddUser: %s\n", user->GetLogin().c_str());
 378 uint32_t uip = user->GetCurrIP();
 379 std::pair<ip2p_iter, ip2p_iter> pi;
 380
 381 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 382 // Find all packets with IP belongs to this user
 383 pi = ip2packets.equal_range(uip);
 384
 385 while (pi.first != pi.second)
 386     {
 387     if (pi.first->second->first.GetSrcIP() == uip)
 388         {
 389         assert((!pi.first->second->second.userUPresent ||
 390                  pi.first->second->second.userU == user) &&
 391                "U user present but it's not current user");
 392
 393         pi.first->second->second.lenU = 0;
 394         pi.first->second->second.userU = user;
 395         pi.first->second->second.userUPresent = true;
 396         }
 397
 398     if (pi.first->second->first.GetDstIP() == uip)
 399         {
 400         assert((!pi.first->second->second.userDPresent ||
 401                  pi.first->second->second.userD == user) &&
 402                "D user present but it's not current user");
 403
 404         pi.first->second->second.lenD = 0;
 405         pi.first->second->second.userD = user;
 406         pi.first->second->second.userDPresent = true;
 407         }
 408
 409     ++pi.first;
 410     }
 411 }
 412 //-----------------------------------------------------------------------------
 413 void TRAFFCOUNTER_IMPL::DelUser(uint32_t uip)
 414 {
 415 printfd(__FILE__, "DelUser: %s \n", inet_ntostring(uip).c_str());
 416 std::pair<ip2p_iter, ip2p_iter> pi;
 417
 418 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 419 pi = ip2packets.equal_range(uip);
 420
 421 while (pi.first != pi.second)
 422     {
 423     if (pi.first->second->first.GetSrcIP() == uip)
 424         {
 425         if (pi.first->second->second.dirU < DIR_NUM && pi.first->second->second.userUPresent)
 426             {
 427             #ifdef TRAFF_STAT_WITH_PORTS
 428             pi.first->second->second.userU->AddTraffStatU(pi.first->second->second.dirU,
 429                                                           pi.first->second->first.GetDstIP(),
 430                                                           pi.first->second->first.GetDstPort(),
 431                                                           pi.first->second->second.lenU);
 432             #else
 433             pi.first->second->second.userU->AddTraffStatU(pi.first->second->second.dirU,
 434                                                           pi.first->second->first.GetDstIP(),
 435                                                           pi.first->second->second.lenU);
 436             #endif
 437             }
 438         pi.first->second->second.userUPresent = false;
 439         }
 440
 441     if (pi.first->second->first.GetDstIP() == uip)
 442         {
 443         if (pi.first->second->second.dirD < DIR_NUM && pi.first->second->second.userDPresent)
 444             {
 445             #ifdef TRAFF_STAT_WITH_PORTS
 446             pi.first->second->second.userD->AddTraffStatD(pi.first->second->second.dirD,
 447                                                           pi.first->second->first.GetSrcIP(),
 448                                                           pi.first->second->first.GetSrcPort(),
 449                                                           pi.first->second->second.lenD);
 450             #else
 451             pi.first->second->second.userD->AddTraffStatD(pi.first->second->second.dirD,
 452                                                           pi.first->second->first.GetSrcIP(),
 453                                                           pi.first->second->second.lenD);
 454             #endif
 455             }
 456
 457         pi.first->second->second.userDPresent = false;
 458         }
 459
 460     ++pi.first;
 461     }
 462
 463 ip2packets.erase(pi.first, pi.second);
 464 }
 465 //-----------------------------------------------------------------------------
 466 void TRAFFCOUNTER_IMPL::SetUserNotifiers(USER_IMPL * user)
 467 {
 468 // Adding user. Adding notifiers to user.
 469 TRF_IP_BEFORE ipBNotifier(*this, user);
 470 ipBeforeNotifiers.push_front(ipBNotifier);
 471 user->AddCurrIPBeforeNotifier(&(*ipBeforeNotifiers.begin()));
 472
 473 TRF_IP_AFTER ipANotifier(*this, user);
 474 ipAfterNotifiers.push_front(ipANotifier);
 475 user->AddCurrIPAfterNotifier(&(*ipAfterNotifiers.begin()));
 476 }
 477 //-----------------------------------------------------------------------------
 478 void TRAFFCOUNTER_IMPL::UnSetUserNotifiers(USER_IMPL * user)
 479 {
 480 // Removing user. Removing notifiers from user.
 481 std::list<TRF_IP_BEFORE>::iterator bi;
 482 std::list<TRF_IP_AFTER>::iterator ai;
 483
 484 bi = ipBeforeNotifiers.begin();
 485 while (bi != ipBeforeNotifiers.end())
 486     {
 487     if (user->GetLogin() == bi->GetUser()->GetLogin())
 488         {
 489         user->DelCurrIPBeforeNotifier(&(*bi));
 490         ipBeforeNotifiers.erase(bi);
 491         break;
 492         }
 493     ++bi;
 494     }
 495
 496 ai = ipAfterNotifiers.begin();
 497 while (ai != ipAfterNotifiers.end())
 498     {
 499     if (user->GetLogin() == ai->GetUser()->GetLogin())
 500         {
 501         user->DelCurrIPAfterNotifier(&(*ai));
 502         ipAfterNotifiers.erase(ai);
 503         break;
 504         }
 505     ++ai;
 506     }
 507 }
 508 //-----------------------------------------------------------------------------
 509 void TRAFFCOUNTER_IMPL::DeterminateDir(const RAW_PACKET & packet,
 510                                        int * dirU, // Direction for incoming packet
 511                                        int * dirD) const // Direction for outgoing packet
 512 {
 513 bool addrMatchU;
 514 bool portMatchU;
 515 bool addrMatchD;
 516 bool portMatchD;
 517 bool foundU = false; // Was rule for U found ?
 518 bool foundD = false; // Was rule for D found ?
 519 //printfd(__FILE__, "foundU=%d, foundD=%d\n", foundU, foundD);
 520
 521 enum { ICMP_RPOTO = 1, TCP_PROTO = 6, UDP_PROTO = 17 };
 522
 523 std::list<RULE>::const_iterator ln;
 524 ln = rules.begin();
 525
 526 while (ln != rules.end())
 527     {
 528     if (!foundU)
 529         {
 530         addrMatchU = false;
 531         portMatchU = false;
 532
 533         switch (ln->proto)
 534             {
 535             case all:
 536                 portMatchU = true;
 537                 break;
 538
 539             case icmp:
 540                 portMatchU = (packet.GetProto() == ICMP_RPOTO);
 541                 break;
 542
 543             case tcp_udp:
 544                 if (packet.GetProto() == TCP_PROTO || packet.GetProto() == UDP_PROTO)
 545                     portMatchU = (packet.GetDstPort() >= ln->port1) && (packet.GetDstPort() <= ln->port2);
 546                 break;
 547
 548             case tcp:
 549                 if (packet.GetProto() == TCP_PROTO)
 550                     portMatchU = (packet.GetDstPort() >= ln->port1) && (packet.GetDstPort() <= ln->port2);
 551                 break;
 552
 553             case udp:
 554                 if (packet.GetProto() == UDP_PROTO)
 555                     portMatchU = (packet.GetDstPort() >= ln->port1) && (packet.GetDstPort() <= ln->port2);
 556                 break;
 557
 558             default:
 559                 printfd(__FILE__, "Error! Incorrect rule!\n");
 560                 break;
 561             }
 562
 563         addrMatchU = (packet.GetDstIP() & ln->mask) == ln->ip;
 564
 565         if (!foundU && addrMatchU && portMatchU)
 566             {
 567             foundU = true;
 568             *dirU = ln->dir;
 569             //printfd(__FILE__, "Up rule ok! %d\n", ln->dir);
 570             //PrintRule(ln->rule);
 571             }
 572
 573         } //if (!foundU)
 574
 575     if (!foundD)
 576         {
 577         addrMatchD = false;
 578         portMatchD = false;
 579
 580         switch (ln->proto)
 581             {
 582             case all:
 583                 portMatchD = true;
 584                 break;
 585
 586             case icmp:
 587                 portMatchD = (packet.GetProto() == ICMP_RPOTO);
 588                 break;
 589
 590             case tcp_udp:
 591                 if (packet.GetProto() == TCP_PROTO || packet.GetProto() == UDP_PROTO)
 592                     portMatchD = (packet.GetSrcPort() >= ln->port1) && (packet.GetSrcPort() <= ln->port2);
 593                 break;
 594
 595             case tcp:
 596                 if (packet.GetProto() == TCP_PROTO)
 597                     portMatchD = (packet.GetSrcPort() >= ln->port1) && (packet.GetSrcPort() <= ln->port2);
 598                 break;
 599
 600             case udp:
 601                 if (packet.GetProto() == UDP_PROTO)
 602                     portMatchD = (packet.GetSrcPort() >= ln->port1) && (packet.GetSrcPort() <= ln->port2);
 603                 break;
 604
 605             default:
 606                 printfd(__FILE__, "Error! Incorrect rule!\n");
 607                 break;
 608             }
 609
 610         addrMatchD = (packet.GetSrcIP() & ln->mask) == ln->ip;
 611
 612         if (!foundD && addrMatchD && portMatchD)
 613             {
 614             foundD = true;
 615             *dirD = ln->dir;
 616             //printfd(__FILE__, "Down rule ok! %d\n", ln->dir);
 617             //PrintRule(ln->rule);
 618             }
 619         } //if (!foundD)
 620
 621     ++ln;
 622     }   //while (ln != rules.end())
 623
 624 if (!foundU)
 625     *dirU = DIR_NUM;
 626
 627 if (!foundD)
 628     *dirD = DIR_NUM;
 629
 630 return;
 631 };
 632 //-----------------------------------------------------------------------------
 633 void TRAFFCOUNTER_IMPL::SetRulesFile(const std::string & fn)
 634 {
 635 rulesFileName = fn;
 636 }
 637 //-----------------------------------------------------------------------------
 638 bool TRAFFCOUNTER_IMPL::ReadRules(bool test)
 639 {
 640 //printfd(__FILE__, "TRAFFCOUNTER::ReadRules()\n");
 641
 642 RULE rul;
 643 FILE * f;
 644 char str[1024];
 645 char tp[100];   // protocol
 646 char ta[100];   // address
 647 char td[100];   // target direction
 648 int r;
 649 int lineNumber = 0;
 650 f = fopen(rulesFileName.c_str(), "rt");
 651
 652 if (!f)
 653     {
 654     printfd(__FILE__, "TRAFFCOUNTER_IMPL::ReadRules() - File '%s' cannot be opened.\n", rulesFileName.c_str());
 655     WriteServLog("File '%s' cannot be oppened.", rulesFileName.c_str());
 656     return true;
 657     }
 658
 659 while (fgets(str, 1023, f))
 660     {
 661     lineNumber++;
 662     if (str[strspn(str," \t")] == '#' || str[strspn(str," \t")] == '\n')
 663         {
 664         continue;
 665         }
 666
 667     r = sscanf(str,"%s %s %s", tp, ta, td);
 668     if (r != 3)
 669         {
 670         printfd(__FILE__, "TRAFFCOUNTER_IMPL::ReadRules() - Error in file '%s' at line %d. There must be 3 parameters.\n", rulesFileName.c_str(), lineNumber);
 671         WriteServLog("Error in file '%s' at line %d. There must be 3 parameters.", rulesFileName.c_str(), lineNumber);
 672         fclose(f);
 673         return true;
 674         }
 675
 676     rul.proto = 0xff;
 677     rul.dir = 0xff;
 678
 679     for (int i = 0; i < PROTOMAX; i++)
 680         {
 681         if (strcasecmp(tp, protoName[i]) == 0)
 682             rul.proto = i;
 683         }
 684
 685     for (int i = 0; i < DIR_NUM + 1; i++)
 686         {
 687         if (td == dirName[i])
 688             rul.dir = i;
 689         }
 690
 691     if (rul.dir == 0xff || rul.proto == 0xff)
 692         {
 693         printfd(__FILE__, "TRAFFCOUNTER_IMPL::ReadRules() - Error in file '%s' at line %d.\n", rulesFileName.c_str(), lineNumber);
 694         WriteServLog("Error in file %s. Line %d.",
 695                      rulesFileName.c_str(), lineNumber);
 696         fclose(f);
 697         return true;
 698         }
 699
 700     if (ParseAddress(ta, &rul) != 0)
 701         {
 702         printfd(__FILE__, "TRAFFCOUNTER_IMPL::ReadRules() - Error in file '%s' at line %d. Error in adress.\n", rulesFileName.c_str(), lineNumber);
 703         WriteServLog("Error in file %s. Error in adress. Line %d.",
 704                      rulesFileName.c_str(), lineNumber);
 705         fclose(f);
 706         return true;
 707         }
 708     if (!test)
 709         rules.push_back(rul);
 710     //PrintRule(rul);
 711     }
 712
 713 fclose(f);
 714
 715 // Adding lastest rule: ALL 0.0.0.0/0 NULL
 716 rul.dir = DIR_NUM; //NULL
 717 rul.ip = 0;  //0.0.0.0
 718 rul.mask = 0;
 719 rul.port1 = 0;
 720 rul.port2 = 65535;
 721 rul.proto = all;
 722
 723 if (!test)
 724     rules.push_back(rul);
 725
 726 //PrintRule(rul);
 727
 728 return false;
 729 }
 730 //-----------------------------------------------------------------------------
 731 int TRAFFCOUNTER_IMPL::Reload()
 732 {
 733 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 734
 735 if (ReadRules(true))
 736     {
 737     printfd(__FILE__, "TRAFFCOUNTER_IMPL::Reload() - Failed to reload rules.\n");
 738     WriteServLog("TRAFFCOUNTER: Cannot reload rules. Errors found.");
 739     return -1;
 740     }
 741
 742 FreeRules();
 743 ReadRules();
 744 printfd(__FILE__, "TRAFFCOUNTER_IMPL::Reload() -  Reload rules successfull.\n");
 745 WriteServLog("TRAFFCOUNTER: Reload rules successfull.");
 746 return 0;
 747 }
 748 //-----------------------------------------------------------------------------
 749 bool TRAFFCOUNTER_IMPL::ParseAddress(const char * ta, RULE * rule) const
 750 {
 751 char addr[50], mask[20], port1[20], port2[20], ports[40];
 752
 753 int len = strlen(ta);
 754 char n = 0;
 755 int i, p;
 756 memset(addr, 0, sizeof(addr));
 757 for (i = 0; i < len; i++)
 758     {
 759     if (ta[i] == '/' || ta[i] == ':')
 760         {
 761         addr[i] = 0;
 762         n = ta[i];
 763         break;
 764         }
 765     addr[i] = ta[i];
 766     n = 0;
 767     }
 768 addr[i + 1] = 0;
 769 p = i + 1;
 770
 771 if (n == '/')
 772     {
 773     // mask
 774     for (; i < len; i++)
 775         {
 776         if (ta[i] == ':')
 777             {
 778             mask[i - p] = 0;
 779             n = ':';
 780             break;
 781             }
 782         mask[i - p] = ta[i];
 783         }
 784     mask[i - p] = 0;
 785     }
 786 else
 787     {
 788     strcpy(mask, "32");
 789     }
 790
 791 p = i + 1;
 792 i++;
 793
 794 if (n == ':')
 795     {
 796     // port
 797     if (!(rule->proto == tcp || rule->proto == udp || rule->proto == tcp_udp))
 798         {
 799         printfd(__FILE__, "TRAFFCOUNTER_IMPL::ParseAddress() - No ports specified for this protocol.\n");
 800         WriteServLog("No ports specified for this protocol.");
 801         return true;
 802         }
 803
 804     for (; i < len; i++)
 805         ports[i - p] = ta[i];
 806
 807     ports[i - p] = 0;
 808     }
 809 else
 810     {
 811     strcpy(ports, "0-65535");
 812     }
 813
 814 char *sss;
 815 char pts[100];
 816 strcpy(pts, ports);
 817
 818 if ((sss = strchr(ports, '-')) != NULL)
 819     {
 820     strncpy(port1, ports, int(sss-ports));
 821     port1[int(sss - ports)] = 0;
 822     strcpy(port2, sss + 1);
 823     }
 824 else
 825     {
 826     strcpy(port1, ports);
 827     strcpy(port2, ports);
 828     }
 829
 830 // Convert strings to mask, ports and IP
 831 int prt1, prt2, msk;
 832 unsigned ip;
 833 char *res;
 834
 835 msk = strtol(mask, &res, 10);
 836 if (*res != 0)
 837     return true;
 838
 839 prt1 = strtol(port1, &res, 10);
 840 if (*res != 0)
 841     return true;
 842
 843 prt2 = strtol(port2, &res, 10);
 844 if (*res != 0)
 845     return true;
 846
 847 int r = inet_aton(addr, (struct in_addr*)&ip);
 848 if (r == 0)
 849     return true;
 850
 851 rule->ip = ip;
 852 rule->mask = CalcMask(msk);
 853 //msk = 1;
 854 //printfd(__FILE__, "msk=%d mask=%08X   mask=%08X\n", msk, rule->mask, (0xFFffFFff << (32 - msk)));
 855
 856 if ((ip & rule->mask) != ip)
 857     {
 858     printfd(__FILE__, "TRAFFCOUNTER_IMPL::ParseAddress() - Address does'n match mask.\n");
 859     WriteServLog("Address does'n match mask.");
 860     return true;
 861     }
 862
 863 rule->port1 = prt1;
 864 rule->port2 = prt2;
 865
 866 return false;
 867 }
 868 //-----------------------------------------------------------------------------
 869 uint32_t TRAFFCOUNTER_IMPL::CalcMask(uint32_t msk) const
 870 {
 871 if (msk >= 32) return 0xFFffFFff;
 872 if (msk == 0) return 0;
 873 return htonl(0xFFffFFff << (32 - msk));
 874 }
 875 //---------------------------------------------------------------------------
 876 void TRAFFCOUNTER_IMPL::FreeRules()
 877 {
 878 rules.clear();
 879 }
 880 //-----------------------------------------------------------------------------
 881 void TRAFFCOUNTER_IMPL::PrintRule(RULE rule) const
 882 {
 883 printf("%15s   ", inet_ntostring(rule.ip).c_str());
 884 printf("mask=%08X ", rule.mask);
 885 printf("port1=%5d ", rule.port1);
 886 printf("port2=%5d ", rule.port2);
 887 switch (rule.proto)
 888     {
 889     case 0:
 890         printf("TCP     ");
 891         break;
 892     case 1:
 893         printf("UDP     ");
 894         break;
 895     case 2:
 896         printf("ICMP    ");
 897         break;
 898     case 3:
 899         printf("TCP_UDP ");
 900         break;
 901     case 4:
 902         printf("ALL     ");
 903         break;
 904     }
 905 printf("dir=%d \n", rule.dir);
 906 return;
 907 }
 908 //-----------------------------------------------------------------------------
 909 void TRAFFCOUNTER_IMPL::SetMonitorDir(const std::string & monitorDir)
 910 {
 911 TRAFFCOUNTER_IMPL::monitorDir = monitorDir;
 912 monitoring = (monitorDir != "");
 913 }
 914 //-----------------------------------------------------------------------------