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)
120 bool ircd_connector::MakeOutboundConnection(char* host, int port)
122 log(DEBUG,"MakeOutboundConnection: Original param: %s",host);
123 hostent* hoste = gethostbyname(host);
126 log(DEBUG,"MakeOutboundConnection: gethostbyname was NULL, setting %s",host);
127 this->SetHostAddress(host,port);
128 SetHostAndPort(host,port);
132 log(DEBUG,"MakeOutboundConnection: gethostbyname was valid, setting %s",(char *)hoste->h_addr);
133 this->SetHostAddress((char *)hoste->h_addr,port);
134 SetHostAndPort((char *)hoste->h_addr,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);
145 int flags = fcntl(this->fd, F_GETFL, 0);
146 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
149 setsockopt(this->fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
150 setsockopt(this->fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
155 WriteOpers("socket() failed!");
162 bool connection::BeginLink(char* targethost, int port, char* password, char* servername, int myport)
164 char connect[MAXBUF];
166 ircd_connector connector;
170 if (connector.MakeOutboundConnection(targethost,port))
172 // targethost has been turned into an ip...
173 // we dont want this as the server name.
174 connector.SetServerName(servername);
175 sprintf(connect,"S %s %s %d :%s",getservername().c_str(),password,myport,getserverdesc().c_str());
176 connector.SetState(STATE_NOAUTH_OUTBOUND);
177 connector.SetHostAndPort(targethost, port);
178 this->connectors.push_back(connector);
179 return this->SendPacket(connect, servername);
183 connector.SetState(STATE_DISCONNECTED);
184 WriteOpers("Could not create outbound connection to %s:%d",targethost,port);
190 bool connection::MeshCookie(char* targethost, int port, long cookie, char* servername)
192 char connect[MAXBUF];
194 ircd_connector connector;
196 WriteOpers("Establishing meshed link to %s:%d",servername,port);
200 if (connector.MakeOutboundConnection(targethost,port))
202 // targethost has been turned into an ip...
203 // we dont want this as the server name.
204 connector.SetServerName(servername);
205 sprintf(connect,"- %d %s :%s",cookie,getservername().c_str(),getserverdesc().c_str());
206 connector.SetState(STATE_NOAUTH_OUTBOUND);
207 connector.SetHostAndPort(targethost, port);
208 connector.SetState(STATE_CONNECTED);
209 this->connectors.push_back(connector);
210 return this->SendPacket(connect, servername);
214 connector.SetState(STATE_DISCONNECTED);
215 WriteOpers("Could not create outbound connection to %s:%d",targethost,port);
221 bool connection::AddIncoming(int fd, char* targethost, int sourceport)
223 char connect[MAXBUF];
225 ircd_connector connector;
227 // targethost has been turned into an ip...
228 // we dont want this as the server name.
229 connector.SetServerName(targethost);
230 connector.SetDescriptor(fd);
231 connector.SetState(STATE_NOAUTH_INBOUND);
232 int flags = fcntl(fd, F_GETFL, 0);
233 fcntl(fd, F_SETFL, flags | O_NONBLOCK);
236 setsockopt(fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
237 setsockopt(fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
238 connector.SetHostAndPort(targethost, sourceport);
239 connector.SetState(STATE_NOAUTH_INBOUND);
240 log(DEBUG,"connection::AddIncoming() Added connection: %s:%d",targethost,sourceport);
241 this->connectors.push_back(connector);
245 void connection::TerminateLink(char* targethost)
247 // this locates the targethost in the connection::connectors vector of the class,
248 // and terminates it by sending it an SQUIT token and closing its descriptor.
249 // TerminateLink with a null string causes a terminate of ALL links
253 // Returns a pointer to the connector for 'host'
254 ircd_connector* connection::FindHost(std::string host)
256 for (int i = 0; i < this->connectors.size(); i++)
258 if (this->connectors[i].GetServerName() == host)
260 return &this->connectors[i];
266 std::string ircd_connector::GetServerName()
268 return this->servername;
271 std::string ircd_connector::GetDescription()
273 return this->description;
276 void ircd_connector::SetServerName(std::string serv)
278 this->servername = serv;
281 void ircd_connector::SetDescription(std::string desc)
283 this->servername = desc;
287 int ircd_connector::GetDescriptor()
292 int ircd_connector::GetState()
298 void ircd_connector::SetState(int state)
301 if (state == STATE_DISCONNECTED)
303 NetSendMyRoutingTable();
307 void ircd_connector::CloseConnection()
309 int flags = fcntl(this->fd, F_GETFL, 0);
310 fcntl(this->fd, F_SETFL, flags ^ O_NONBLOCK);
312 flags = fcntl(this->fd, F_GETFL, 0);
313 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
316 void ircd_connector::SetDescriptor(int fd)
321 bool connection::SendPacket(char *message, const char* host)
323 ircd_connector* cn = this->FindHost(host);
325 if (!strchr(message,'\n'))
327 strncat(message,"\n",MAXBUF);
332 log(DEBUG,"main: Connection::SendPacket() sent '%s' to %s",message,cn->GetServerName().c_str());
334 if (cn->GetState() == STATE_DISCONNECTED)
336 log(DEBUG,"Main route to %s is down, seeking alternative",host);
337 // this route is down, we must re-route the packet through an available point in the mesh.
338 for (int k = 0; k < this->connectors.size(); k++)
340 // search for another point in the mesh which can 'reach' where we want to go
341 for (int m = 0; m < this->connectors[k].routes.size(); m++)
343 if (!strcasecmp(this->connectors[k].routes[m].c_str(),host))
345 log(DEBUG,"Found alternative route for packet: %s",this->connectors[k].GetServerName().c_str());
347 snprintf(buffer,MAXBUF,"R %s %s",host,message);
348 this->SendPacket(buffer,this->connectors[k].GetServerName().c_str());
354 snprintf(buffer,MAXBUF,"& %s",host);
355 NetSendToAllExcept(host,buffer);
356 log(DEBUG,"There are no routes to %s, we're gonna boot the server off!",host);
361 // returns false if the packet could not be sent (e.g. target host down)
362 if (send(cn->GetDescriptor(),message,strlen(message),0)<0)
364 log(DEBUG,"send() failed for Connection::SendPacket(): %s",strerror(errno));
365 log(DEBUG,"Disabling connector: %s",cn->GetServerName().c_str());
366 cn->CloseConnection();
367 cn->SetState(STATE_DISCONNECTED);
374 // receives a packet from any where there is data waiting, first come, first served
375 // fills the message and host values with the host where the data came from.
377 bool connection::RecvPacket(std::deque<std::string> &messages, char* host)
380 memset(data, 0, 32767);
381 for (int i = 0; i < this->connectors.size(); i++)
383 if (this->connectors[i].GetState() != STATE_DISCONNECTED)
385 // returns false if the packet could not be sent (e.g. target host down)
387 rcvsize = recv(this->connectors[i].GetDescriptor(),data,32767,0);
392 log(DEBUG,"recv() failed for Connection::RecvPacket(): %s",strerror(errno));
393 log(DEBUG,"Disabling connector: %s",this->connectors[i].GetServerName().c_str());
394 this->connectors[i].CloseConnection();
395 this->connectors[i].SetState(STATE_DISCONNECTED);
400 char* l = strtok(data,"\n");
403 char sanitized[32767];
404 memset(sanitized, 0, 32767);
406 for (int pt = 0; pt < strlen(l); pt++)
410 sanitized[ptt++] = l[pt];
413 sanitized[ptt] = '\0';
414 if (strlen(sanitized))
416 messages.push_back(sanitized);
417 strncpy(host,this->connectors[i].GetServerName().c_str(),160);
418 log(DEBUG,"main: Connection::RecvPacket() got '%s' from %s",sanitized,host);
421 l = strtok(NULL,"\n");
427 // nothing new yet -- message and host will be undefined
431 long connection::GenKey()
434 return (random()*time(NULL));