* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
+ * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
#include <string>
#include <unistd.h>
#include <fcntl.h>
+#include <poll.h>
#include <sstream>
#include <iostream>
#include <fstream>
+#include <stdexcept>
#include "socket.h"
#include "inspircd.h"
#include "inspircd_io.h"
-#include "inspircd_util.h"
#include "inspstring.h"
#include "helperfuncs.h"
+#include "socketengine.h"
-extern FILE *log_file;
-extern int boundPortCount;
-extern int openSockfd[MAXSOCKS];
+
+extern InspIRCd* ServerInstance;
+extern ServerConfig* Config;
extern time_t TIME;
-extern bool unlimitcore;
-extern int MaxConn;
+
+InspSocket* socket_ref[MAX_DESCRIPTORS];
InspSocket::InspSocket()
{
this->state = I_DISCONNECTED;
+ this->fd = -1;
+}
+
+InspSocket::InspSocket(int newfd, char* ip)
+{
+ this->fd = newfd;
+ this->state = I_CONNECTED;
+ this->IP = ip;
+ ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
+ socket_ref[this->fd] = this;
}
InspSocket::InspSocket(std::string host, int port, bool listening, unsigned long maxtime)
{
+ this->fd = -1;
if (listening) {
- } else {
- char* ip;
+ if ((this->fd = OpenTCPSocket()) == ERROR)
+ {
+ this->fd = -1;
+ this->state = I_ERROR;
+ this->OnError(I_ERR_SOCKET);
+ log(DEBUG,"OpenTCPSocket() error");
+ return;
+ }
+ else
+ {
+ if (BindSocket(this->fd,this->client,this->server,port,(char*)host.c_str()) == ERROR)
+ {
+ this->Close();
+ this->fd = -1;
+ this->state = I_ERROR;
+ this->OnError(I_ERR_BIND);
+ log(DEBUG,"BindSocket() error %s",strerror(errno));
+ return;
+ }
+ else
+ {
+ this->state = I_LISTENING;
+ ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
+ socket_ref[this->fd] = this;
+ log(DEBUG,"New socket now in I_LISTENING state");
+ return;
+ }
+ }
+ }
+ else
+ {
this->host = host;
- hostent* hoste = gethostbyname(host.c_str());
- if (!hoste) {
- ip = (char*)host.c_str();
- } else {
- struct in_addr* ia = (in_addr*)hoste->h_addr;
- ip = inet_ntoa(*ia);
+ this->port = port;
+
+ if (!inet_aton(host.c_str(),&addy))
+ {
+ log(DEBUG,"Attempting to resolve %s",this->host.c_str());
+ /* Its not an ip, spawn the resolver */
+ this->dns.SetNS(std::string(Config->DNSServer));
+ this->dns.ForwardLookupWithFD(host,fd);
+ timeout_end = time(NULL) + maxtime;
+ timeout = false;
+ this->state = I_RESOLVING;
+ socket_ref[this->fd] = this;
+ }
+ else
+ {
+ log(DEBUG,"No need to resolve %s",this->host.c_str());
+ this->IP = host;
+ timeout_end = time(NULL) + maxtime;
+ this->DoConnect();
}
+ }
+}
+
+void InspSocket::SetQueues(int nfd)
+{
+ // attempt to increase socket sendq and recvq as high as its possible
+ int sendbuf = 32768;
+ int recvbuf = 32768;
+ setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
+ setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
+}
- timeout_end = time(NULL)+maxtime;
- timeout = false;
- if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+bool InspSocket::DoResolve()
+{
+ log(DEBUG,"In DoResolve(), trying to resolve IP");
+ if (this->dns.HasResult())
+ {
+ log(DEBUG,"Socket has result");
+ std::string res_ip = dns.GetResultIP();
+ if (res_ip != "")
+ {
+ log(DEBUG,"Socket result set to %s",res_ip.c_str());
+ this->IP = res_ip;
+ socket_ref[this->fd] = NULL;
+ }
+ else
{
+ log(DEBUG,"Socket DNS failure");
+ this->Close();
this->state = I_ERROR;
- return;
+ this->OnError(I_ERR_RESOLVE);
+ return false;
}
- this->port = port;
- inet_aton(ip,&addy);
- addr.sin_family = AF_INET;
- addr.sin_addr = addy;
- addr.sin_port = htons(this->port);
-
- int flags;
- flags = fcntl(this->fd, F_GETFL, 0);
- fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
-
- if(connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
- {
- if (errno != EINPROGRESS)
- {
- shutdown(this->fd,2);
- close(this->fd);
- this->fd = -1;
- this->state = I_ERROR;
- return;
- }
- }
- this->state = I_CONNECTING;
- return;
+ return this->DoConnect();
+ }
+ log(DEBUG,"No result for socket yet!");
+ return true;
+}
+
+bool InspSocket::DoConnect()
+{
+ log(DEBUG,"In DoConnect()");
+ if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+ {
+ log(DEBUG,"Cant socket()");
+ this->state = I_ERROR;
+ this->OnError(I_ERR_SOCKET);
+ return false;
+ }
+
+ log(DEBUG,"Part 2 DoConnect() %s",this->IP.c_str());
+ inet_aton(this->IP.c_str(),&addy);
+ addr.sin_family = AF_INET;
+ addr.sin_addr = addy;
+ addr.sin_port = htons(this->port);
+
+ int flags;
+ flags = fcntl(this->fd, F_GETFL, 0);
+ fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
+
+ if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
+ {
+ if (errno != EINPROGRESS)
+ {
+ log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
+ this->OnError(I_ERR_CONNECT);
+ this->state = I_ERROR;
+ this->Close();
+ return false;
+ }
+ }
+ this->state = I_CONNECTING;
+ ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
+ socket_ref[this->fd] = this;
+ this->SetQueues(this->fd);
+ log(DEBUG,"Returning true from InspSocket::DoConnect");
+ return true;
+}
+
+
+void InspSocket::Close()
+{
+ if (this->fd != -1)
+ {
+ this->OnClose();
+ shutdown(this->fd,2);
+ close(this->fd);
+ socket_ref[this->fd] = NULL;
+ this->fd = -1;
}
}
-void InspSocket::EngineTrigger()
+std::string InspSocket::GetIP()
+{
+ return this->IP;
+}
+
+char* InspSocket::Read()
{
+ if ((fd < 0) || (fd > MAX_DESCRIPTORS))
+ return NULL;
+ int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
+ if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
+ {
+ ibuf[n] = 0;
+ return ibuf;
+ }
+ else
+ {
+ if (errno == EAGAIN)
+ {
+ return "";
+ }
+ else
+ {
+ log(DEBUG,"EOF or error on socket");
+ return NULL;
+ }
+ }
+}
+
+// There are two possible outcomes to this function.
+// It will either write all of the data, or an undefined amount.
+// If an undefined amount is written the connection has failed
+// and should be aborted.
+int InspSocket::Write(std::string data)
+{
+ try
+ {
+ if ((data != "") && (this->Buffer.length() + data.length() < this->Buffer.max_size()))
+ this->Buffer.append(data);
+ }
+ catch (std::length_error)
+ {
+ log(DEBUG,"std::length_error exception caught while appending to socket buffer!");
+ return 0;
+ }
+ return data.length();
+}
+
+void InspSocket::FlushWriteBuffer()
+{
+ int result = 0;
+ if (this->Buffer.length())
+ {
+ result = send(this->fd,this->Buffer.c_str(),this->Buffer.length(),0);
+ if (result > 0)
+ {
+ if (result == (int)this->Buffer.length())
+ {
+ this->Buffer = "";
+ }
+ else
+ {
+ /* If we wrote some, advance the buffer forwards */
+ char* n = (char*)this->Buffer.c_str();
+ n += result;
+ this->Buffer = n;
+ }
+ }
+ }
+}
+
+bool InspSocket::Timeout(time_t current)
+{
+ if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
+ {
+ log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
+ // for non-listening sockets, the timeout can occur
+ // which causes termination of the connection after
+ // the given number of seconds without a successful
+ // connection.
+ this->OnTimeout();
+ this->OnError(I_ERR_TIMEOUT);
+ timeout = true;
+ this->state = I_ERROR;
+ return true;
+ }
+ this->FlushWriteBuffer();
+ return false;
+}
+
+bool InspSocket::Poll()
+{
+ int incoming = -1;
+ bool n = true;
+
+ log(DEBUG,"InspSocket::Poll()");
+
switch (this->state)
{
+ case I_RESOLVING:
+ log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
+ return this->DoResolve();
+ break;
case I_CONNECTING:
- this->OnConnected();
+ log(DEBUG,"State = I_CONNECTED");
+ this->SetState(I_CONNECTED);
+ /* Our socket was in write-state, so delete it and re-add it
+ * in read-state.
+ */
+ ServerInstance->SE->DelFd(this->fd);
+ ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
+ return this->OnConnected();
break;
case I_LISTENING:
- this->OnIncomingConnection();
+ length = sizeof (client);
+ incoming = accept (this->fd, (sockaddr*)&client,&length);
+ this->SetQueues(incoming);
+ this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
+ return true;
break;
case I_CONNECTED:
- this->OnDataReady();
+ log(DEBUG,"State = I_CONNECTED");
+ n = this->OnDataReady();
+ log(DEBUG,"State return: %d",(int)n);
+ /* Flush any pending, but not till after theyre done with the event
+ * so there are less write calls involved. */
+ this->FlushWriteBuffer();
+ return n;
break;
default:
break;
}
+ return true;
}
void InspSocket::SetState(InspSocketState s)
{
+ log(DEBUG,"Socket state change");
this->state = s;
}
-int InspSocket::OnConnected() { return 0; }
-int InspSocket::OnError() { return 0; }
+InspSocketState InspSocket::GetState()
+{
+ return this->state;
+}
+
+int InspSocket::GetFd()
+{
+ return this->fd;
+}
+
+bool InspSocket::OnConnected() { return true; }
+void InspSocket::OnError(InspSocketError e) { return; }
int InspSocket::OnDisconnect() { return 0; }
-int InspSocket::OnIncomingConnection() { return 0; }
-int InspSocket::OnDataReady() { return 0; }
+int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
+bool InspSocket::OnDataReady() { return true; }
+void InspSocket::OnTimeout() { return; }
+void InspSocket::OnClose() { return; }
InspSocket::~InspSocket()
{
+ this->Close();
}
-/*
-int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
-int OpenTCPSocket (void)
-*/
projects / user / henk / code / inspircd.git / blobdiff