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@stargazer.dp.ua>
19 * Author : Maxim Mamontov <faust@stargazer.dp.ua>
22 #include <arpa/inet.h>
23 #include <sys/uio.h> // readv
24 #include <sys/types.h> // for historical versions of BSD
25 #include <sys/socket.h>
26 #include <netinet/in.h>
36 #include "stg/scriptexecuter.h"
37 #include "stg/locker.h"
38 #include "stg/common.h"
41 void InitEncrypt(BLOWFISH_CTX * ctx, const std::string & password);
42 void Decrypt(BLOWFISH_CTX * ctx, char * dst, const char * src, int len8);
44 //-----------------------------------------------------------------------------
46 : WriteServLog(GetStgLogger()),
49 receiverStopped(true),
50 processorStopped(true),
54 version = "rscriptd listener v.1.2";
56 pthread_mutex_init(&mutex, NULL);
58 //-----------------------------------------------------------------------------
59 void LISTENER::SetPassword(const std::string & p)
62 printfd(__FILE__, "Encryption initiated with password \'%s\'\n", password.c_str());
63 InitEncrypt(&ctxS, password);
65 //-----------------------------------------------------------------------------
66 bool LISTENER::Start()
68 printfd(__FILE__, "LISTENER::Start()\n");
78 if (pthread_create(&receiverThread, NULL, Run, this))
80 errorStr = "Cannot create thread.";
87 if (pthread_create(&processorThread, NULL, RunProcessor, this))
89 errorStr = "Cannot create thread.";
98 //-----------------------------------------------------------------------------
103 printfd(__FILE__, "LISTENER::Stop()\n");
105 struct timespec ts = {0, 500000000};
106 nanosleep(&ts, NULL);
108 if (!processorStopped)
110 //5 seconds to thread stops itself
111 for (int i = 0; i < 25 && !processorStopped; i++)
113 struct timespec ts = {0, 200000000};
114 nanosleep(&ts, NULL);
117 //after 5 seconds waiting thread still running. now killing it
118 if (!processorStopped)
120 //TODO pthread_cancel()
121 if (pthread_kill(processorThread, SIGINT))
123 errorStr = "Cannot kill thread.";
126 printfd(__FILE__, "LISTENER killed Timeouter\n");
130 if (!receiverStopped)
132 //5 seconds to thread stops itself
133 for (int i = 0; i < 25 && !receiverStopped; i++)
135 struct timespec ts = {0, 200000000};
136 nanosleep(&ts, NULL);
139 //after 5 seconds waiting thread still running. now killing it
140 if (!receiverStopped)
142 //TODO pthread_cancel()
143 if (pthread_kill(receiverThread, SIGINT))
145 errorStr = "Cannot kill thread.";
148 printfd(__FILE__, "LISTENER killed Run\n");
152 pthread_join(receiverThread, NULL);
153 pthread_join(processorThread, NULL);
155 pthread_mutex_destroy(&mutex);
159 std::for_each(users.begin(), users.end(), DisconnectUser(*this));
161 printfd(__FILE__, "LISTENER::Stoped successfully.\n");
165 //-----------------------------------------------------------------------------
166 void * LISTENER::Run(void * d)
168 LISTENER * listener = static_cast<LISTENER *>(d);
174 //-----------------------------------------------------------------------------
175 void LISTENER::Runner()
177 receiverStopped = false;
184 receiverStopped = true;
186 //-----------------------------------------------------------------------------
187 void * LISTENER::RunProcessor(void * d)
189 LISTENER * listener = static_cast<LISTENER *>(d);
191 listener->ProcessorRunner();
195 //-----------------------------------------------------------------------------
196 void LISTENER::ProcessorRunner()
198 processorStopped = false;
202 struct timespec ts = {0, 500000000};
203 nanosleep(&ts, NULL);
204 if (!pending.empty())
209 processorStopped = true;
211 //-----------------------------------------------------------------------------
212 bool LISTENER::PrepareNet()
214 listenSocket = socket(AF_INET, SOCK_DGRAM, 0);
216 if (listenSocket < 0)
218 errorStr = "Cannot create socket.";
222 struct sockaddr_in listenAddr;
223 listenAddr.sin_family = AF_INET;
224 listenAddr.sin_port = htons(port);
225 listenAddr.sin_addr.s_addr = inet_addr("0.0.0.0");
227 if (bind(listenSocket, (struct sockaddr*)&listenAddr, sizeof(listenAddr)) < 0)
229 errorStr = "LISTENER: Bind failed.";
233 printfd(__FILE__, "LISTENER::PrepareNet() >>>> Start successfull.\n");
237 //-----------------------------------------------------------------------------
238 bool LISTENER::FinalizeNet()
244 //-----------------------------------------------------------------------------
245 bool LISTENER::RecvPacket()
249 char buffer[RS_MAX_PACKET_LEN];
250 RS_PACKET_HEADER packetHead;
252 iov[0].iov_base = reinterpret_cast<char *>(&packetHead);
253 iov[0].iov_len = sizeof(packetHead);
254 iov[1].iov_base = buffer;
255 iov[1].iov_len = sizeof(buffer) - sizeof(packetHead);
258 while (dataLen < sizeof(buffer))
260 if (!WaitPackets(listenSocket))
266 int portion = readv(listenSocket, iov, 2);
274 if (CheckHeader(packetHead))
276 printfd(__FILE__, "Invalid packet or incorrect protocol version!\n");
280 std::string userLogin((char *)packetHead.login);
282 data.login = userLogin;
283 data.ip = ntohl(packetHead.ip);
284 data.id = ntohl(packetHead.id);
286 if (packetHead.packetType == RS_ALIVE_PACKET)
288 data.type = PendingData::ALIVE;
290 else if (packetHead.packetType == RS_CONNECT_PACKET)
292 data.type = PendingData::CONNECT;
293 if (GetParams(buffer, data))
298 else if (packetHead.packetType == RS_DISCONNECT_PACKET)
300 data.type = PendingData::DISCONNECT;
301 if (GetParams(buffer, data))
307 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
308 pending.push_back(data);
312 //-----------------------------------------------------------------------------
313 bool LISTENER::GetParams(char * buffer, UserData & data)
315 RS_PACKET_TAIL packetTail;
317 Decrypt(&ctxS, (char *)&packetTail, buffer, sizeof(packetTail) / 8);
319 if (strncmp((char *)packetTail.magic, RS_ID, RS_MAGIC_LEN))
321 printfd(__FILE__, "Invalid crypto magic\n");
325 std::stringstream params;
326 params << "\"" << data.login << "\" "
327 << inet_ntostring(data.ip) << " "
329 << (char *)packetTail.params;
331 data.params = params.str();
335 //-----------------------------------------------------------------------------
336 void LISTENER::ProcessPending()
338 std::list<PendingData>::iterator it(pending.begin());
340 printfd(__FILE__, "Pending: %d\n", pending.size());
341 while (it != pending.end() && count < 256)
343 std::vector<AliveData>::iterator uit(
349 if (it->type == PendingData::CONNECT)
351 if (uit == users.end() || uit->login != it->login)
355 users.insert(uit, AliveData(static_cast<UserData>(*it)));
357 else if (uit->login == it->login)
359 // Update already existing user
360 time(&uit->lastAlive);
361 uit->params = it->params;
364 else if (it->type == PendingData::ALIVE)
366 if (uit != users.end() && uit->login == it->login)
368 // Update existing user
369 time(&uit->lastAlive);
372 else if (it->type == PendingData::DISCONNECT)
374 if (uit != users.end() && uit->login == it->login.c_str())
376 // Disconnect existing user
384 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
385 pending.erase(pending.begin(), it);
387 //-----------------------------------------------------------------------------
388 void LISTENER::ProcessTimeouts()
390 const std::vector<AliveData>::iterator it(
391 std::stable_partition(
394 IsNotTimedOut(userTimeout)
398 if (it != users.end())
400 printfd(__FILE__, "Total users: %d, users to disconnect: %d\n", users.size(), std::distance(it, users.end()));
405 DisconnectUser(*this)
408 users.erase(it, users.end());
411 //-----------------------------------------------------------------------------
412 bool LISTENER::Connect(const UserData & data) const
414 printfd(__FILE__, "Connect %s\n", data.login.c_str());
415 if (access(scriptOnConnect.c_str(), X_OK) == 0)
417 if (ScriptExec((scriptOnConnect + " " + data.params).c_str()))
419 WriteServLog("Script %s cannot be executed for an unknown reason.", scriptOnConnect.c_str());
425 WriteServLog("Script %s cannot be executed. File not found.", scriptOnConnect.c_str());
430 //-----------------------------------------------------------------------------
431 bool LISTENER::Disconnect(const UserData & data) const
433 printfd(__FILE__, "Disconnect %s\n", data.login.c_str());
434 if (access(scriptOnDisconnect.c_str(), X_OK) == 0)
436 if (ScriptExec((scriptOnDisconnect + " " + data.params).c_str()))
438 WriteServLog("Script %s cannot be executed for an unknown reson.", scriptOnDisconnect.c_str());
444 WriteServLog("Script %s cannot be executed. File not found.", scriptOnDisconnect.c_str());
449 //-----------------------------------------------------------------------------
450 bool LISTENER::CheckHeader(const RS_PACKET_HEADER & header) const
452 if (strncmp((char *)header.magic, RS_ID, RS_MAGIC_LEN))
456 if (strncmp((char *)header.protoVer, "02", RS_PROTO_VER_LEN))
462 //-----------------------------------------------------------------------------
464 void InitEncrypt(BLOWFISH_CTX * ctx, const std::string & password)
466 unsigned char keyL[PASSWD_LEN];
467 memset(keyL, 0, PASSWD_LEN);
468 strncpy((char *)keyL, password.c_str(), PASSWD_LEN);
469 Blowfish_Init(ctx, keyL, PASSWD_LEN);
471 //-----------------------------------------------------------------------------
473 void Decrypt(BLOWFISH_CTX * ctx, char * dst, const char * src, int len8)
476 memcpy(dst, src, len8 * 8);
478 for (int i = 0; i < len8; i++)
479 Blowfish_Decrypt(ctx, (uint32_t *)(dst + i * 8), (uint32_t *)(dst + i * 8 + 4));
481 //-----------------------------------------------------------------------------