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;
53 InspSocket::InspSocket(int newfd, char* ip)
56 this->state = I_CONNECTED;
58 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
59 socket_ref[this->fd] = this;
62 InspSocket::InspSocket(std::string host, int port, bool listening, unsigned long maxtime)
66 if ((this->fd = OpenTCPSocket()) == ERROR)
69 this->state = I_ERROR;
70 this->OnError(I_ERR_SOCKET);
71 log(DEBUG,"OpenTCPSocket() error");
76 if (BindSocket(this->fd,this->client,this->server,port,(char*)host.c_str()) == ERROR)
80 this->state = I_ERROR;
81 this->OnError(I_ERR_BIND);
82 log(DEBUG,"BindSocket() error %s",strerror(errno));
87 this->state = I_LISTENING;
88 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
89 socket_ref[this->fd] = this;
90 log(DEBUG,"New socket now in I_LISTENING state");
100 if (!inet_aton(host.c_str(),&addy))
102 log(DEBUG,"Attempting to resolve %s",this->host.c_str());
103 /* Its not an ip, spawn the resolver */
104 this->dns.SetNS(std::string(Config->DNSServer));
105 this->dns.ForwardLookupWithFD(host,fd);
106 timeout_end = time(NULL) + maxtime;
108 this->state = I_RESOLVING;
109 socket_ref[this->fd] = this;
113 log(DEBUG,"No need to resolve %s",this->host.c_str());
115 timeout_end = time(NULL) + maxtime;
121 void InspSocket::SetQueues(int nfd)
123 // attempt to increase socket sendq and recvq as high as its possible
126 setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
127 setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
130 bool InspSocket::DoResolve()
132 log(DEBUG,"In DoResolve(), trying to resolve IP");
133 if (this->dns.HasResult())
135 log(DEBUG,"Socket has result");
136 std::string res_ip = dns.GetResultIP();
139 log(DEBUG,"Socket result set to %s",res_ip.c_str());
141 socket_ref[this->fd] = NULL;
145 log(DEBUG,"Socket DNS failure");
147 this->state = I_ERROR;
148 this->OnError(I_ERR_RESOLVE);
151 return this->DoConnect();
153 log(DEBUG,"No result for socket yet!");
157 bool InspSocket::DoConnect()
159 log(DEBUG,"In DoConnect()");
160 if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
162 log(DEBUG,"Cant socket()");
163 this->state = I_ERROR;
164 this->OnError(I_ERR_SOCKET);
168 log(DEBUG,"Part 2 DoConnect() %s",this->IP.c_str());
169 inet_aton(this->IP.c_str(),&addy);
170 addr.sin_family = AF_INET;
171 addr.sin_addr = addy;
172 addr.sin_port = htons(this->port);
175 flags = fcntl(this->fd, F_GETFL, 0);
176 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
178 if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
180 if (errno != EINPROGRESS)
182 log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
183 this->OnError(I_ERR_CONNECT);
184 this->state = I_ERROR;
189 this->state = I_CONNECTING;
190 ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
191 socket_ref[this->fd] = this;
192 this->SetQueues(this->fd);
193 log(DEBUG,"Returning true from InspSocket::DoConnect");
198 void InspSocket::Close()
203 shutdown(this->fd,2);
205 socket_ref[this->fd] = NULL;
210 std::string InspSocket::GetIP()
215 char* InspSocket::Read()
217 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
219 int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
220 if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
233 log(DEBUG,"EOF or error on socket");
239 // There are two possible outcomes to this function.
240 // It will either write all of the data, or an undefined amount.
241 // If an undefined amount is written the connection has failed
242 // and should be aborted.
243 int InspSocket::Write(std::string data)
247 if ((data != "") && (this->Buffer.length() + data.length() < this->Buffer.max_size()))
248 this->Buffer.append(data);
250 catch (std::length_error)
252 log(DEBUG,"std::length_error exception caught while appending to socket buffer!");
255 return data.length();
258 void InspSocket::FlushWriteBuffer()
261 if (this->Buffer.length())
263 result = send(this->fd,this->Buffer.c_str(),this->Buffer.length(),0);
266 if (result == (int)this->Buffer.length())
272 /* If we wrote some, advance the buffer forwards */
273 char* n = (char*)this->Buffer.c_str();
281 bool InspSocket::Timeout(time_t current)
283 if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
285 log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
286 // for non-listening sockets, the timeout can occur
287 // which causes termination of the connection after
288 // the given number of seconds without a successful
291 this->OnError(I_ERR_TIMEOUT);
293 this->state = I_ERROR;
296 this->FlushWriteBuffer();
300 bool InspSocket::Poll()
305 log(DEBUG,"InspSocket::Poll()");
310 log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
311 return this->DoResolve();
314 log(DEBUG,"State = I_CONNECTED");
315 this->SetState(I_CONNECTED);
316 /* Our socket was in write-state, so delete it and re-add it
319 ServerInstance->SE->DelFd(this->fd);
320 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
321 return this->OnConnected();
324 length = sizeof (client);
325 incoming = accept (this->fd, (sockaddr*)&client,&length);
326 this->SetQueues(incoming);
327 this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
331 log(DEBUG,"State = I_CONNECTED");
332 n = this->OnDataReady();
333 log(DEBUG,"State return: %d",(int)n);
334 /* Flush any pending, but not till after theyre done with the event
335 * so there are less write calls involved. */
336 this->FlushWriteBuffer();
345 void InspSocket::SetState(InspSocketState s)
347 log(DEBUG,"Socket state change");
351 InspSocketState InspSocket::GetState()
356 int InspSocket::GetFd()
361 bool InspSocket::OnConnected() { return true; }
362 void InspSocket::OnError(InspSocketError e) { return; }
363 int InspSocket::OnDisconnect() { return 0; }
364 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
365 bool InspSocket::OnDataReady() { return true; }
366 void InspSocket::OnTimeout() { return; }
367 void InspSocket::OnClose() { return; }
369 InspSocket::~InspSocket()