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 * ---------------------------------------------------
19 #include "inspircd_config.h"
21 #include <sys/resource.h>
22 #include <sys/types.h>
23 #include <sys/socket.h>
24 #include <netinet/in.h>
35 #include "inspircd_io.h"
36 #include "inspstring.h"
37 #include "helperfuncs.h"
38 #include "socketengine.h"
41 extern InspIRCd* ServerInstance;
42 extern ServerConfig* Config;
45 InspSocket* socket_ref[MAX_DESCRIPTORS];
47 InspSocket::InspSocket()
49 this->state = I_DISCONNECTED;
51 this->ClosePending = false;
54 InspSocket::InspSocket(int newfd, char* ip)
57 this->state = I_CONNECTED;
58 strlcpy(this->IP,ip,MAXBUF);
59 this->ClosePending = false;
60 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
61 socket_ref[this->fd] = this;
64 InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsigned long maxtime) : fd(-1)
66 strlcpy(host,ahost.c_str(),MAXBUF);
67 this->ClosePending = false;
69 if ((this->fd = OpenTCPSocket()) == ERROR)
72 this->state = I_ERROR;
73 this->OnError(I_ERR_SOCKET);
74 this->ClosePending = true;
75 log(DEBUG,"OpenTCPSocket() error");
80 if (!BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str()))
84 this->state = I_ERROR;
85 this->OnError(I_ERR_BIND);
86 this->ClosePending = true;
87 log(DEBUG,"BindSocket() error %s",strerror(errno));
92 this->state = I_LISTENING;
93 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
94 socket_ref[this->fd] = this;
95 log(DEBUG,"New socket now in I_LISTENING state");
102 strlcpy(this->host,ahost.c_str(),MAXBUF);
105 if (!inet_aton(host,&addy))
107 log(DEBUG,"Attempting to resolve %s",this->host);
108 /* Its not an ip, spawn the resolver */
109 this->dns.SetNS(std::string(Config->DNSServer));
110 this->dns.ForwardLookupWithFD(host,fd);
111 timeout_end = time(NULL) + maxtime;
113 this->state = I_RESOLVING;
114 socket_ref[this->fd] = this;
118 log(DEBUG,"No need to resolve %s",this->host);
119 strlcpy(this->IP,host,MAXBUF);
120 timeout_end = time(NULL) + maxtime;
126 void InspSocket::SetQueues(int nfd)
128 // attempt to increase socket sendq and recvq as high as its possible
131 setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
132 setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
135 bool InspSocket::DoResolve()
137 log(DEBUG,"In DoResolve(), trying to resolve IP");
138 if (this->dns.HasResult())
140 log(DEBUG,"Socket has result");
141 std::string res_ip = dns.GetResultIP();
144 log(DEBUG,"Socket result set to %s",res_ip.c_str());
145 strlcpy(this->IP,res_ip.c_str(),MAXBUF);
146 socket_ref[this->fd] = NULL;
150 log(DEBUG,"Socket DNS failure");
152 this->state = I_ERROR;
153 this->OnError(I_ERR_RESOLVE);
155 this->ClosePending = true;
158 return this->DoConnect();
160 log(DEBUG,"No result for socket yet!");
164 bool InspSocket::DoConnect()
166 log(DEBUG,"In DoConnect()");
167 if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
169 log(DEBUG,"Cant socket()");
170 this->state = I_ERROR;
171 this->OnError(I_ERR_SOCKET);
176 log(DEBUG,"Part 2 DoConnect() %s",this->IP);
177 inet_aton(this->IP,&addy);
178 addr.sin_family = AF_INET;
179 addr.sin_addr = addy;
180 addr.sin_port = htons(this->port);
183 flags = fcntl(this->fd, F_GETFL, 0);
184 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
186 if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
188 if (errno != EINPROGRESS)
190 log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
191 this->OnError(I_ERR_CONNECT);
193 this->state = I_ERROR;
195 this->ClosePending = true;
199 this->state = I_CONNECTING;
200 ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
201 socket_ref[this->fd] = this;
202 this->SetQueues(this->fd);
203 log(DEBUG,"Returning true from InspSocket::DoConnect");
208 void InspSocket::Close()
213 shutdown(this->fd,2);
215 socket_ref[this->fd] = NULL;
216 this->ClosePending = true;
221 std::string InspSocket::GetIP()
226 char* InspSocket::Read()
228 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
230 int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
231 if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
244 log(DEBUG,"EOF or error on socket: %s",strerror(errno));
250 void InspSocket::MarkAsClosed()
252 log(DEBUG,"Marked as closed");
253 this->ClosePending = true;
256 // There are two possible outcomes to this function.
257 // It will either write all of the data, or an undefined amount.
258 // If an undefined amount is written the connection has failed
259 // and should be aborted.
260 int InspSocket::Write(const std::string &data)
262 if (this->ClosePending)
265 /*int result = write(this->fd,data.c_str(),data.length());
270 /* Try and append the data to the back of the queue, and send it on its way
272 outbuffer.push_back(data);
273 return (!this->FlushWriteBuffer());
276 bool InspSocket::FlushWriteBuffer()
278 if (this->ClosePending)
281 if ((this->fd > -1) && (this->state == I_CONNECTED))
283 if (outbuffer.size())
285 int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
288 if ((unsigned int)result == outbuffer[0].length())
290 /* The whole block was written (usually a line)
291 * Pop the block off the front of the queue
293 outbuffer.pop_front();
297 std::string temp = outbuffer[0].substr(result);
301 else if ((result == -1) && (errno != EAGAIN))
303 log(DEBUG,"Write error on socket: %s",strerror(errno));
304 this->OnError(I_ERR_WRITE);
305 this->state = I_ERROR;
313 bool InspSocket::Timeout(time_t current)
315 if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
317 log(DEBUG,"No FD or socket ref");
321 if (this->ClosePending)
323 log(DEBUG,"Close is pending");
327 if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
329 log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
330 // for non-listening sockets, the timeout can occur
331 // which causes termination of the connection after
332 // the given number of seconds without a successful
335 this->OnError(I_ERR_TIMEOUT);
337 this->state = I_ERROR;
340 return this->FlushWriteBuffer();
343 bool InspSocket::Poll()
345 if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
351 if ((fd < 0) || (fd > MAX_DESCRIPTORS) || (this->ClosePending))
357 log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
358 return this->DoResolve();
361 log(DEBUG,"State = I_CONNECTING");
362 this->SetState(I_CONNECTED);
363 /* Our socket was in write-state, so delete it and re-add it
366 ServerInstance->SE->DelFd(this->fd);
367 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
368 return this->OnConnected();
371 length = sizeof (client);
372 incoming = accept (this->fd, (sockaddr*)&client,&length);
373 this->SetQueues(incoming);
374 this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
378 n = this->OnDataReady();
379 /* Flush any pending, but not till after theyre done with the event
380 * so there are less write calls involved.
381 * Both FlushWriteBuffer AND the return result of OnDataReady must
382 * return true for this to be ok.
384 return (n && !this->FlushWriteBuffer());
392 void InspSocket::SetState(InspSocketState s)
394 log(DEBUG,"Socket state change");
398 InspSocketState InspSocket::GetState()
403 int InspSocket::GetFd()
408 bool InspSocket::OnConnected() { return true; }
409 void InspSocket::OnError(InspSocketError e) { return; }
410 int InspSocket::OnDisconnect() { return 0; }
411 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
412 bool InspSocket::OnDataReady() { return true; }
413 void InspSocket::OnTimeout() { return; }
414 void InspSocket::OnClose() { return; }
416 InspSocket::~InspSocket()