1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
22 #include "inspircd_config.h"
25 #include "configreader.h"
26 #include "inspstring.h"
27 #include "helperfuncs.h"
28 #include "socketengine.h"
32 extern InspIRCd* ServerInstance;
33 extern ServerConfig* Config;
36 InspSocket* socket_ref[MAX_DESCRIPTORS];
38 InspSocket::InspSocket()
40 this->state = I_DISCONNECTED;
42 this->ClosePending = false;
45 InspSocket::InspSocket(int newfd, const char* ip)
48 this->state = I_CONNECTED;
49 strlcpy(this->IP,ip,MAXBUF);
50 this->ClosePending = false;
53 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
54 socket_ref[this->fd] = this;
58 InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsigned long maxtime) : fd(-1)
60 strlcpy(host,ahost.c_str(),MAXBUF);
61 this->ClosePending = false;
63 if ((this->fd = OpenTCPSocket()) == ERROR)
66 this->state = I_ERROR;
67 this->OnError(I_ERR_SOCKET);
68 this->ClosePending = true;
69 log(DEBUG,"OpenTCPSocket() error");
74 if (!BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str()))
76 log(DEBUG,"BindSocket() error %s",strerror(errno));
79 this->state = I_ERROR;
80 this->OnError(I_ERR_BIND);
81 this->ClosePending = true;
86 this->state = I_LISTENING;
89 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
90 socket_ref[this->fd] = this;
92 log(DEBUG,"New socket now in I_LISTENING state");
99 strlcpy(this->host,ahost.c_str(),MAXBUF);
102 if (insp_aton(host,&addy) < 1)
104 log(DEBUG,"Attempting to resolve %s",this->host);
105 /* Its not an ip, spawn the resolver */
107 /* TODO: Implement resolver with new Resolver class */
109 timeout_end = time(NULL) + maxtime;
111 this->state = I_RESOLVING;
112 socket_ref[this->fd] = this;
116 log(DEBUG,"No need to resolve %s",this->host);
117 strlcpy(this->IP,host,MAXBUF);
118 timeout_end = time(NULL) + maxtime;
124 void InspSocket::WantWrite()
127 * The socket engine may only have each FD in the list ONCE.
128 * This means we cant watch for write AND read at the same
129 * time. We have to remove the READ fd, to insert the WRITE
130 * fd. Once we receive our WRITE event (which WILL ARRIVE,
131 * pretty much gauranteed) we switch back to watching for
134 * This behaviour may be fixed in a later version.
136 this->WaitingForWriteEvent = true;
137 ServerInstance->SE->DelFd(this->fd);
138 ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
141 void InspSocket::SetQueues(int nfd)
143 // attempt to increase socket sendq and recvq as high as its possible
146 setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
147 setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
150 bool InspSocket::DoResolve()
152 log(DEBUG,"In DoResolve(), trying to resolve IP");
154 log(DEBUG,"No result for socket yet!");
158 /* Most irc servers require you to specify the ip you want to bind to.
159 * If you dont specify an IP, they rather dumbly bind to the first IP
160 * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP
161 * addresses we've bound server ports to, and we try and bind our outbound
162 * connections to the first usable non-loopback and non-any IP we find.
163 * This is easier to configure when you have a lot of links and a lot
164 * of servers to configure.
166 bool InspSocket::BindAddr()
171 log(DEBUG,"In InspSocket::BindAddr()");
172 for (int j =0; j < Conf.Enumerate("bind"); j++)
174 std::string Type = Conf.ReadValue("bind","type",j);
175 std::string IP = Conf.ReadValue("bind","address",j);
176 if (Type == "servers")
178 if ((IP != "*") && (IP != "127.0.0.1") && (IP != ""))
181 char resolved_addr[MAXBUF];
183 if (insp_aton(IP.c_str(),&n) < 1)
185 /* If they gave a hostname, bind to the IP it resolves to */
186 log(DEBUG,"Resolving host %s",IP.c_str());
187 if (CleanAndResolve(resolved_addr, IP.c_str(), true, 1))
189 log(DEBUG,"Resolved host %s to %s",IP.c_str(),resolved_addr);
194 if (insp_aton(IP.c_str(),&n) > 0)
196 log(DEBUG,"Found an IP to bind to: %s",IP.c_str());
199 s.sin6_family = AF_FAMILY;
202 s.sin_family = AF_FAMILY;
204 if (bind(this->fd,(struct sockaddr*)&s,sizeof(s)) < 0)
206 log(DEBUG,"Cant bind()");
207 this->state = I_ERROR;
208 this->OnError(I_ERR_BIND);
212 log(DEBUG,"bind() reports outbound fd bound to ip %s",IP.c_str());
217 log(DEBUG,"Address '%s' was not an IP address",IP.c_str());
222 log(DEBUG,"Found no suitable IPs to bind, binding INADDR_ANY");
226 bool InspSocket::DoConnect()
228 log(DEBUG,"In DoConnect()");
229 if ((this->fd = socket(AF_FAMILY, SOCK_STREAM, 0)) == -1)
231 log(DEBUG,"Cant socket()");
232 this->state = I_ERROR;
233 this->OnError(I_ERR_SOCKET);
238 if (!this->BindAddr())
241 log(DEBUG,"Part 2 DoConnect() %s",this->IP);
242 insp_aton(this->IP,&addy);
244 addr.sin6_family = AF_FAMILY;
245 memcpy(&addy, &addr.sin6_addr, sizeof(insp_inaddr));
246 addr.sin6_port = htons(this->port);
248 addr.sin_family = AF_FAMILY;
249 addr.sin_addr = addy;
250 addr.sin_port = htons(this->port);
254 flags = fcntl(this->fd, F_GETFL, 0);
255 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
257 if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
259 if (errno != EINPROGRESS)
261 log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
262 this->OnError(I_ERR_CONNECT);
264 this->state = I_ERROR;
266 this->ClosePending = true;
270 this->state = I_CONNECTING;
273 ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
274 socket_ref[this->fd] = this;
275 this->SetQueues(this->fd);
277 log(DEBUG,"Returning true from InspSocket::DoConnect");
282 void InspSocket::Close()
287 shutdown(this->fd,2);
289 socket_ref[this->fd] = NULL;
290 this->ClosePending = true;
295 std::string InspSocket::GetIP()
300 char* InspSocket::Read()
302 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
304 int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
305 if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
318 log(DEBUG,"EOF or error on socket: %s",strerror(errno));
324 void InspSocket::MarkAsClosed()
326 log(DEBUG,"Marked as closed");
327 this->ClosePending = true;
330 // There are two possible outcomes to this function.
331 // It will either write all of the data, or an undefined amount.
332 // If an undefined amount is written the connection has failed
333 // and should be aborted.
334 int InspSocket::Write(const std::string &data)
336 if (this->ClosePending)
339 /*int result = write(this->fd,data.c_str(),data.length());
344 /* Try and append the data to the back of the queue, and send it on its way
346 outbuffer.push_back(data);
347 return (!this->FlushWriteBuffer());
350 bool InspSocket::FlushWriteBuffer()
352 if (this->ClosePending)
355 if ((this->fd > -1) && (this->state == I_CONNECTED))
357 if (outbuffer.size())
359 int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
362 if ((unsigned int)result == outbuffer[0].length())
364 /* The whole block was written (usually a line)
365 * Pop the block off the front of the queue
367 outbuffer.pop_front();
371 std::string temp = outbuffer[0].substr(result);
375 else if ((result == -1) && (errno != EAGAIN))
377 log(DEBUG,"Write error on socket: %s",strerror(errno));
378 this->OnError(I_ERR_WRITE);
379 this->state = I_ERROR;
380 this->ClosePending = true;
388 bool InspSocket::Timeout(time_t current)
390 if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
392 log(DEBUG,"No FD or socket ref");
396 if (this->ClosePending)
398 log(DEBUG,"Close is pending");
402 if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
404 log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
405 // for non-listening sockets, the timeout can occur
406 // which causes termination of the connection after
407 // the given number of seconds without a successful
410 this->OnError(I_ERR_TIMEOUT);
412 this->state = I_ERROR;
413 this->ClosePending = true;
416 return this->FlushWriteBuffer();
419 bool InspSocket::Poll()
421 if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
427 if ((fd < 0) || (fd > MAX_DESCRIPTORS) || (this->ClosePending))
433 log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
434 return this->DoResolve();
437 log(DEBUG,"State = I_CONNECTING");
438 this->SetState(I_CONNECTED);
439 /* Our socket was in write-state, so delete it and re-add it
444 ServerInstance->SE->DelFd(this->fd);
445 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
447 return this->OnConnected();
450 length = sizeof (client);
451 incoming = accept (this->fd, (sockaddr*)&client,&length);
452 this->SetQueues(incoming);
454 this->OnIncomingConnection(incoming,(char*)insp_ntoa(client.sin6_addr));
456 this->OnIncomingConnection(incoming,(char*)insp_ntoa(client.sin_addr));
462 if (this->WaitingForWriteEvent)
464 /* Switch back to read events */
465 ServerInstance->SE->DelFd(this->fd);
466 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
467 /* Trigger the write event */
468 n = this->OnWriteReady();
472 /* Process the read event */
473 n = this->OnDataReady();
475 /* Flush any pending, but not till after theyre done with the event
476 * so there are less write calls involved.
477 * Both FlushWriteBuffer AND the return result of OnDataReady must
478 * return true for this to be ok.
480 if (this->FlushWriteBuffer())
490 void InspSocket::SetState(InspSocketState s)
492 log(DEBUG,"Socket state change");
496 InspSocketState InspSocket::GetState()
501 int InspSocket::GetFd()
506 bool InspSocket::OnConnected() { return true; }
507 void InspSocket::OnError(InspSocketError e) { return; }
508 int InspSocket::OnDisconnect() { return 0; }
509 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
510 bool InspSocket::OnDataReady() { return true; }
511 bool InspSocket::OnWriteReady() { return true; }
512 void InspSocket::OnTimeout() { return; }
513 void InspSocket::OnClose() { return; }
515 InspSocket::~InspSocket()