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 ahost, int aport, bool listening, unsigned long maxtime)
67 if ((this->fd = OpenTCPSocket()) == ERROR)
70 this->state = I_ERROR;
71 this->OnError(I_ERR_SOCKET);
72 log(DEBUG,"OpenTCPSocket() error");
77 if (BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str()) == ERROR)
81 this->state = I_ERROR;
82 this->OnError(I_ERR_BIND);
83 log(DEBUG,"BindSocket() error %s",strerror(errno));
88 this->state = I_LISTENING;
89 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
90 socket_ref[this->fd] = this;
91 log(DEBUG,"New socket now in I_LISTENING state");
101 if (!inet_aton(host.c_str(),&addy))
103 log(DEBUG,"Attempting to resolve %s",this->host.c_str());
104 /* Its not an ip, spawn the resolver */
105 this->dns.SetNS(std::string(Config->DNSServer));
106 this->dns.ForwardLookupWithFD(host,fd);
107 timeout_end = time(NULL) + maxtime;
109 this->state = I_RESOLVING;
110 socket_ref[this->fd] = this;
114 log(DEBUG,"No need to resolve %s",this->host.c_str());
116 timeout_end = time(NULL) + maxtime;
122 void InspSocket::SetQueues(int nfd)
124 // attempt to increase socket sendq and recvq as high as its possible
127 setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
128 setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
131 bool InspSocket::DoResolve()
133 log(DEBUG,"In DoResolve(), trying to resolve IP");
134 if (this->dns.HasResult())
136 log(DEBUG,"Socket has result");
137 std::string res_ip = dns.GetResultIP();
140 log(DEBUG,"Socket result set to %s",res_ip.c_str());
142 socket_ref[this->fd] = NULL;
146 log(DEBUG,"Socket DNS failure");
148 this->state = I_ERROR;
149 this->OnError(I_ERR_RESOLVE);
152 return this->DoConnect();
154 log(DEBUG,"No result for socket yet!");
158 bool InspSocket::DoConnect()
160 log(DEBUG,"In DoConnect()");
161 if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
163 log(DEBUG,"Cant socket()");
164 this->state = I_ERROR;
165 this->OnError(I_ERR_SOCKET);
169 log(DEBUG,"Part 2 DoConnect() %s",this->IP.c_str());
170 inet_aton(this->IP.c_str(),&addy);
171 addr.sin_family = AF_INET;
172 addr.sin_addr = addy;
173 addr.sin_port = htons(this->port);
176 flags = fcntl(this->fd, F_GETFL, 0);
177 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
179 if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
181 if (errno != EINPROGRESS)
183 log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
184 this->OnError(I_ERR_CONNECT);
185 this->state = I_ERROR;
190 this->state = I_CONNECTING;
191 ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
192 socket_ref[this->fd] = this;
193 this->SetQueues(this->fd);
194 log(DEBUG,"Returning true from InspSocket::DoConnect");
199 void InspSocket::Close()
204 shutdown(this->fd,2);
206 socket_ref[this->fd] = NULL;
211 std::string InspSocket::GetIP()
216 char* InspSocket::Read()
218 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
220 int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
221 if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
234 log(DEBUG,"EOF or error on socket");
240 // There are two possible outcomes to this function.
241 // It will either write all of the data, or an undefined amount.
242 // If an undefined amount is written the connection has failed
243 // and should be aborted.
244 int InspSocket::Write(std::string data)
248 if ((data != "") && (this->Buffer.length() + data.length() < this->Buffer.max_size()))
249 this->Buffer.append(data);
251 catch (std::length_error)
253 log(DEBUG,"std::length_error exception caught while appending to socket buffer!");
256 return data.length();
259 void InspSocket::FlushWriteBuffer()
262 if (this->Buffer.length())
264 result = send(this->fd,this->Buffer.c_str(),this->Buffer.length(),0);
267 if (result == (int)this->Buffer.length())
273 /* If we wrote some, advance the buffer forwards */
274 char* n = (char*)this->Buffer.c_str();
282 bool InspSocket::Timeout(time_t current)
284 if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
286 log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
287 // for non-listening sockets, the timeout can occur
288 // which causes termination of the connection after
289 // the given number of seconds without a successful
292 this->OnError(I_ERR_TIMEOUT);
294 this->state = I_ERROR;
297 this->FlushWriteBuffer();
301 bool InspSocket::Poll()
306 log(DEBUG,"InspSocket::Poll()");
311 log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
312 return this->DoResolve();
315 log(DEBUG,"State = I_CONNECTED");
316 this->SetState(I_CONNECTED);
317 /* Our socket was in write-state, so delete it and re-add it
320 ServerInstance->SE->DelFd(this->fd);
321 ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
322 return this->OnConnected();
325 length = sizeof (client);
326 incoming = accept (this->fd, (sockaddr*)&client,&length);
327 this->SetQueues(incoming);
328 this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
332 log(DEBUG,"State = I_CONNECTED");
333 n = this->OnDataReady();
334 log(DEBUG,"State return: %d",(int)n);
335 /* Flush any pending, but not till after theyre done with the event
336 * so there are less write calls involved. */
337 this->FlushWriteBuffer();
346 void InspSocket::SetState(InspSocketState s)
348 log(DEBUG,"Socket state change");
352 InspSocketState InspSocket::GetState()
357 int InspSocket::GetFd()
362 bool InspSocket::OnConnected() { return true; }
363 void InspSocket::OnError(InspSocketError e) { return; }
364 int InspSocket::OnDisconnect() { return 0; }
365 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
366 bool InspSocket::OnDataReady() { return true; }
367 void InspSocket::OnTimeout() { return; }
368 void InspSocket::OnClose() { return; }
370 InspSocket::~InspSocket()