1 #include <connection.h>
6 #include <sys/utsname.h>
15 extern std::vector<Module*> modules;
16 extern std::vector<ircd_module*> factory;
20 connection::connection()
26 bool connection::CreateListener(char* host, int p)
28 sockaddr_in host_address;
32 struct linger linger = { 0 };
36 fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
42 memset((void*)&host_address, 0, sizeof(host_address));
44 host_address.sin_family = AF_INET;
48 host_address.sin_addr.s_addr = htonl(INADDR_ANY);
52 inet_aton(host,&addy);
53 host_address.sin_addr = addy;
56 host_address.sin_port = htons(p);
58 if (bind(fd,(sockaddr*)&host_address,sizeof(host_address))<0)
63 // make the socket non-blocking
64 flags = fcntl(fd, F_GETFL, 0);
65 fcntl(fd, F_SETFL, flags | O_NONBLOCK);
69 setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(const char*)&on,sizeof(on));
72 setsockopt(fd,SOL_SOCKET,SO_LINGER,(const char*)&linger,sizeof(linger));
74 // attempt to increase socket sendq and recvq as high as its possible
75 // to get them on linux.
78 setsockopt(fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
79 setsockopt(fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
86 char* ircd_connector::GetServerIP()
91 int ircd_connector::GetServerPort()
96 bool ircd_connector::SetHostAndPort(char* host, int port)
98 strncpy(this->host,host,160);
103 bool ircd_connector::SetHostAddress(char* host, int port)
105 strncpy(this->host,host,160);
107 memset((void*)&addr, 0, sizeof(addr));
108 addr.sin_family = AF_INET;
109 inet_aton(host,&addr.sin_addr);
110 addr.sin_port = htons(port);
114 void ircd_connector::SetServerPort(int p)
119 bool ircd_connector::MakeOutboundConnection(char* host, int port)
121 log(DEBUG,"MakeOutboundConnection: Original param: %s",host);
122 hostent* hoste = gethostbyname(host);
125 log(DEBUG,"MakeOutboundConnection: gethostbyname was NULL, setting %s",host);
126 this->SetHostAddress(host,port);
127 SetHostAndPort(host,port);
131 struct in_addr* ia = (in_addr*)hoste->h_addr;
132 log(DEBUG,"MakeOutboundConnection: gethostbyname was valid, setting %s",inet_ntoa(*ia));
133 this->SetHostAddress(inet_ntoa(*ia),port);
134 SetHostAndPort(inet_ntoa(*ia),port);
137 this->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
140 if(connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)))
142 WriteOpers("connect() failed for %s",host);
143 RemoveServer(this->servername.c_str());
146 int flags = fcntl(this->fd, F_GETFL, 0);
147 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
150 setsockopt(this->fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
151 setsockopt(this->fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
156 WriteOpers("socket() failed!");
157 RemoveServer(this->servername.c_str());
164 bool connection::BeginLink(char* targethost, int port, char* password, char* servername, int myport)
166 char connect[MAXBUF];
168 ircd_connector connector;
169 ircd_connector *cn = this->FindServer(servername);
174 WriteOpers("CONNECT aborted: Server %s already exists from %s",servername,ServerName);
181 if (connector.MakeOutboundConnection(targethost,port))
183 // targethost has been turned into an ip...
184 // we dont want this as the server name.
185 connector.SetServerName(servername);
186 sprintf(connect,"S %s %s %d %d :%s",getservername().c_str(),password,myport,GetRevision(),getserverdesc().c_str());
187 connector.SetState(STATE_NOAUTH_OUTBOUND);
188 connector.SetHostAndPort(targethost, port);
189 this->connectors.push_back(connector);
190 return this->SendPacket(connect, servername);
194 connector.SetState(STATE_DISCONNECTED);
195 WriteOpers("Could not create outbound connection to %s:%d",targethost,port);
201 bool connection::MeshCookie(char* targethost, int port, long cookie, char* servername)
203 char connect[MAXBUF];
205 ircd_connector connector;
207 WriteOpers("Establishing meshed link to %s:%d",servername,port);
211 if (connector.MakeOutboundConnection(targethost,port))
213 // targethost has been turned into an ip...
214 // we dont want this as the server name.
215 connector.SetServerName(servername);
216 sprintf(connect,"- %d %s :%s",cookie,getservername().c_str(),getserverdesc().c_str());
217 connector.SetState(STATE_NOAUTH_OUTBOUND);
218 connector.SetHostAndPort(targethost, port);
219 connector.SetState(STATE_CONNECTED);
220 this->connectors.push_back(connector);
221 return this->SendPacket(connect, servername);
225 connector.SetState(STATE_DISCONNECTED);
226 WriteOpers("Could not create outbound connection to %s:%d",targethost,port);
232 bool connection::AddIncoming(int fd, char* targethost, int sourceport)
234 char connect[MAXBUF];
236 ircd_connector connector;
238 // targethost has been turned into an ip...
239 // we dont want this as the server name.
240 connector.SetServerName(targethost);
241 connector.SetDescriptor(fd);
242 connector.SetState(STATE_NOAUTH_INBOUND);
243 int flags = fcntl(fd, F_GETFL, 0);
244 fcntl(fd, F_SETFL, flags | O_NONBLOCK);
247 setsockopt(fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
248 setsockopt(fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
249 connector.SetHostAndPort(targethost, sourceport);
250 connector.SetState(STATE_NOAUTH_INBOUND);
251 log(DEBUG,"connection::AddIncoming() Added connection: %s:%d",targethost,sourceport);
252 this->connectors.push_back(connector);
256 void connection::TerminateLink(char* targethost)
258 // this locates the targethost in the connection::connectors vector of the class,
259 // and terminates it by sending it an SQUIT token and closing its descriptor.
260 // TerminateLink with a null string causes a terminate of ALL links
264 // Returns a pointer to the connector for 'host'
265 ircd_connector* connection::FindHost(std::string host)
267 for (int i = 0; i < this->connectors.size(); i++)
269 if (this->connectors[i].GetServerName() == host)
271 return &this->connectors[i];
277 std::string ircd_connector::GetServerName()
279 return this->servername;
282 std::string ircd_connector::GetDescription()
284 return this->description;
287 void ircd_connector::SetServerName(std::string serv)
289 this->servername = serv;
292 void ircd_connector::SetDescription(std::string desc)
294 this->description = desc;
298 int ircd_connector::GetDescriptor()
303 int ircd_connector::GetState()
309 void ircd_connector::SetState(int state)
312 if (state == STATE_DISCONNECTED)
314 NetSendMyRoutingTable();
318 void ircd_connector::CloseConnection()
320 int flags = fcntl(this->fd, F_GETFL, 0);
321 fcntl(this->fd, F_SETFL, flags ^ O_NONBLOCK);
323 flags = fcntl(this->fd, F_GETFL, 0);
324 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
327 void ircd_connector::SetDescriptor(int fd)
332 bool connection::SendPacket(char *message, const char* host)
334 ircd_connector* cn = this->FindHost(host);
336 if (!strchr(message,'\n'))
338 strncat(message,"\n",MAXBUF);
343 log(DEBUG,"main: Connection::SendPacket() sent '%s' to %s",message,cn->GetServerName().c_str());
345 if (cn->GetState() == STATE_DISCONNECTED)
347 log(DEBUG,"Main route to %s is down, seeking alternative",host);
348 // this route is down, we must re-route the packet through an available point in the mesh.
349 for (int k = 0; k < this->connectors.size(); k++)
351 // search for another point in the mesh which can 'reach' where we want to go
352 for (int m = 0; m < this->connectors[k].routes.size(); m++)
354 if (!strcasecmp(this->connectors[k].routes[m].c_str(),host))
356 log(DEBUG,"Found alternative route for packet: %s",this->connectors[k].GetServerName().c_str());
358 snprintf(buffer,MAXBUF,"R %s %s",host,message);
359 this->SendPacket(buffer,this->connectors[k].GetServerName().c_str());
365 snprintf(buffer,MAXBUF,"& %s",host);
366 NetSendToAllExcept(host,buffer);
367 log(DEBUG,"There are no routes to %s, we're gonna boot the server off!",host);
372 // returns false if the packet could not be sent (e.g. target host down)
373 if (send(cn->GetDescriptor(),message,strlen(message),0)<0)
375 log(DEBUG,"send() failed for Connection::SendPacket(): %s",strerror(errno));
376 log(DEBUG,"Disabling connector: %s",cn->GetServerName().c_str());
377 cn->CloseConnection();
378 cn->SetState(STATE_DISCONNECTED);
379 // retry the packet along a new route so either arrival OR failure are gauranteed (bugfix)
380 return this->SendPacket(message,host);
386 // receives a packet from any where there is data waiting, first come, first served
387 // fills the message and host values with the host where the data came from.
389 bool connection::RecvPacket(std::deque<std::string> &messages, char* host)
392 memset(data, 0, 32767);
393 for (int i = 0; i < this->connectors.size(); i++)
395 if (this->connectors[i].GetState() != STATE_DISCONNECTED)
397 // returns false if the packet could not be sent (e.g. target host down)
399 rcvsize = recv(this->connectors[i].GetDescriptor(),data,32767,0);
404 log(DEBUG,"recv() failed for Connection::RecvPacket(): %s",strerror(errno));
405 log(DEBUG,"Disabling connector: %s",this->connectors[i].GetServerName().c_str());
406 this->connectors[i].CloseConnection();
407 this->connectors[i].SetState(STATE_DISCONNECTED);
412 char* l = strtok(data,"\n");
415 char sanitized[32767];
416 memset(sanitized, 0, 32767);
418 for (int pt = 0; pt < strlen(l); pt++)
422 sanitized[ptt++] = l[pt];
425 sanitized[ptt] = '\0';
426 if (strlen(sanitized))
428 messages.push_back(sanitized);
429 strncpy(host,this->connectors[i].GetServerName().c_str(),160);
430 log(DEBUG,"main: Connection::RecvPacket() got '%s' from %s",sanitized,host);
433 l = strtok(NULL,"\n");
439 // nothing new yet -- message and host will be undefined
443 long connection::GenKey()
446 return (random()*time(NULL));