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[user/henk/code/inspircd.git] / src / inspsocket.cpp
index 20cde3a1aa28f5e3763dd1e82fef0f7256db9d15..d1dc1ce6bb783b45bd8f6c0ece5c5e6ee13d406d 100644 (file)
  * ---------------------------------------------------
  */
 
-#include <string>
-#include <sstream>
-#include <iostream>
-#include <fstream>
-#include <stdexcept>
-#include "inspircd_config.h"
 #include "socket.h"
-#include "inspircd.h"
 #include "configreader.h"
 #include "inspstring.h"
-#include "helperfuncs.h"
 #include "socketengine.h"
-#include "message.h"
-
+#include "inspircd.h"
 
-extern InspIRCd* ServerInstance;
-extern ServerConfig* Config;
-extern time_t TIME;
+using irc::sockets::OpenTCPSocket;
+using irc::sockets::insp_inaddr;
+using irc::sockets::insp_sockaddr;
 
-InspSocket* socket_ref[MAX_DESCRIPTORS];
+bool InspSocket::Readable()
+{
+       return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false));
+}
 
-InspSocket::InspSocket()
+InspSocket::InspSocket(InspIRCd* SI)
 {
        this->state = I_DISCONNECTED;
        this->fd = -1;
-       this->ClosePending = false;
+       this->WaitingForWriteEvent = false;
+       this->Instance = SI;
 }
 
-InspSocket::InspSocket(int newfd, const char* ip)
+InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)
 {
        this->fd = newfd;
        this->state = I_CONNECTED;
        strlcpy(this->IP,ip,MAXBUF);
-       this->ClosePending = false;
+       this->WaitingForWriteEvent = false;
+       this->Instance = SI;
        if (this->fd > -1)
-       {
-               ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
-               socket_ref[this->fd] = this;
-       }
+               this->Instance->SE->AddFd(this);
 }
 
-InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsigned long maxtime) : fd(-1)
+InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime)
 {
-       strlcpy(host,ahost.c_str(),MAXBUF);
-       this->ClosePending = false;
-       if (listening) {
+       this->fd = -1;
+       this->Instance = SI;
+       strlcpy(host,ipaddr.c_str(),MAXBUF);
+       this->WaitingForWriteEvent = false;
+       if (listening)
+       {
                if ((this->fd = OpenTCPSocket()) == ERROR)
                {
                        this->fd = -1;
                        this->state = I_ERROR;
                        this->OnError(I_ERR_SOCKET);
-                       this->ClosePending = true;
-                       log(DEBUG,"OpenTCPSocket() error");
+                       this->Instance->Log(DEBUG,"OpenTCPSocket() error");
                        return;
                }
                else
                {
-                       if (!BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str()))
+                       if (!SI->BindSocket(this->fd,this->client,this->server,aport,(char*)ipaddr.c_str()))
                        {
-                               log(DEBUG,"BindSocket() error %s",strerror(errno));
+                               this->Instance->Log(DEBUG,"BindSocket() error %s",strerror(errno));
                                this->Close();
                                this->fd = -1;
                                this->state = I_ERROR;
@@ -86,35 +81,37 @@ InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsi
                                this->state = I_LISTENING;
                                if (this->fd > -1)
                                {
-                                       ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
-                                       socket_ref[this->fd] = this;
+                                       if (!this->Instance->SE->AddFd(this))
+                                       {
+                                               this->Close();
+                                               this->state = I_ERROR;
+                                               this->OnError(I_ERR_NOMOREFDS);
+                                       }
                                }
-                               log(DEBUG,"New socket now in I_LISTENING state");
+                               this->Instance->Log(DEBUG,"New socket now in I_LISTENING state");
                                return;
                        }
                }                       
        }
        else
        {
-               strlcpy(this->host,ahost.c_str(),MAXBUF);
+               strlcpy(this->host,ipaddr.c_str(),MAXBUF);
                this->port = aport;
 
-               if (insp_aton(host,&addy) < 0)
+               if (insp_aton(host,&addy) < 1)
                {
-                       log(DEBUG,"Attempting to resolve %s",this->host);
-                       /* 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;
+                       this->Instance->Log(DEBUG,"You cannot pass hostnames to InspSocket, resolve them first with Resolver!");
+                       this->Close();
+                       this->fd = -1;
+                       this->state = I_ERROR;
+                       this->OnError(I_ERR_RESOLVE);
+                       return;
                }
                else
                {
-                       log(DEBUG,"No need to resolve %s",this->host);
+                       this->Instance->Log(DEBUG,"No need to resolve %s",this->host);
                        strlcpy(this->IP,host,MAXBUF);
-                       timeout_end = time(NULL) + maxtime;
+                       timeout_val = maxtime;
                        this->DoConnect();
                }
        }
@@ -132,9 +129,15 @@ void InspSocket::WantWrite()
         *
         * This behaviour may be fixed in a later version.
         */
+       this->Instance->SE->DelFd(this);
        this->WaitingForWriteEvent = true;
-       ServerInstance->SE->DelFd(this->fd);
-       ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
+       if (!this->Instance->SE->AddFd(this))
+       {
+               this->Close();
+               this->fd = -1;
+               this->state = I_ERROR;
+               this->OnError(I_ERR_NOMOREFDS);
+       }
 }
 
 void InspSocket::SetQueues(int nfd)
@@ -146,35 +149,6 @@ void InspSocket::SetQueues(int nfd)
        setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
 }
 
-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());
-                       strlcpy(this->IP,res_ip.c_str(),MAXBUF);
-                       socket_ref[this->fd] = NULL;
-               }
-               else
-               {
-                       log(DEBUG,"Socket DNS failure");
-                       this->Close();
-                       this->state = I_ERROR;
-                       this->OnError(I_ERR_RESOLVE);
-                       this->fd = -1;
-                       this->ClosePending = true;
-                       return false;
-               }
-               return this->DoConnect();
-       }
-       log(DEBUG,"No result for socket yet!");
-       return true;
-}
-
 /* Most irc servers require you to specify the ip you want to bind to.
  * If you dont specify an IP, they rather dumbly bind to the first IP
  * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP
@@ -186,9 +160,9 @@ bool InspSocket::DoResolve()
 bool InspSocket::BindAddr()
 {
        insp_inaddr n;
-       ConfigReader Conf;
+       ConfigReader Conf(this->Instance);
 
-       log(DEBUG,"In InspSocket::BindAddr()");
+       this->Instance->Log(DEBUG,"In InspSocket::BindAddr()");
        for (int j =0; j < Conf.Enumerate("bind"); j++)
        {
                std::string Type = Conf.ReadValue("bind","type",j);
@@ -198,22 +172,10 @@ bool InspSocket::BindAddr()
                        if ((IP != "*") && (IP != "127.0.0.1") && (IP != ""))
                        {
                                insp_sockaddr s;
-                               char resolved_addr[MAXBUF];
-                               
-                               if (insp_aton(IP.c_str(),&n) < 0)
-                               {
-                                       /* If they gave a hostname, bind to the IP it resolves to */
-                                       log(DEBUG,"Resolving host %s",IP.c_str());
-                                       if (CleanAndResolve(resolved_addr, IP.c_str(), true, 1))
-                                       {
-                                               log(DEBUG,"Resolved host %s to %s",IP.c_str(),resolved_addr);
-                                               IP = resolved_addr;
-                                       }
-                               }
 
-                               if (insp_aton(IP.c_str(),&n) == 0)
+                               if (insp_aton(IP.c_str(),&n) > 0)
                                {
-                                       log(DEBUG,"Found an IP to bind to: %s",IP.c_str());
+                                       this->Instance->Log(DEBUG,"Found an IP to bind to: %s",IP.c_str());
 #ifdef IPV6
                                        s.sin6_addr = n;
                                        s.sin6_family = AF_FAMILY;
@@ -223,46 +185,48 @@ bool InspSocket::BindAddr()
 #endif
                                        if (bind(this->fd,(struct sockaddr*)&s,sizeof(s)) < 0)
                                        {
-                                               log(DEBUG,"Cant bind()");
+                                               this->Instance->Log(DEBUG,"Cant bind()");
                                                this->state = I_ERROR;
                                                this->OnError(I_ERR_BIND);
                                                this->fd = -1;
                                                return false;
                                        }
-                                       log(DEBUG,"bind() reports outbound fd bound to ip %s",IP.c_str());
+                                       this->Instance->Log(DEBUG,"bind() reports outbound fd bound to ip %s",IP.c_str());
                                        return true;
                                }
                                else
                                {
-                                       log(DEBUG,"Address '%s' was not an IP address",IP.c_str());
+                                       this->Instance->Log(DEBUG,"Address '%s' was not an IP address",IP.c_str());
                                }
                        }
                }
        }
-       log(DEBUG,"Found no suitable IPs to bind, binding INADDR_ANY");
+       this->Instance->Log(DEBUG,"Found no suitable IPs to bind, binding INADDR_ANY");
        return true;
 }
 
 bool InspSocket::DoConnect()
 {
-       log(DEBUG,"In DoConnect()");
+       this->Instance->Log(DEBUG,"In DoConnect()");
        if ((this->fd = socket(AF_FAMILY, SOCK_STREAM, 0)) == -1)
        {
-               log(DEBUG,"Cant socket()");
+               this->Instance->Log(DEBUG,"Cant socket()");
                this->state = I_ERROR;
                this->OnError(I_ERR_SOCKET);
-               this->fd = -1;
                return false;
        }
 
-       if (!this->BindAddr())
-               return false;
+       if ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP))
+       {
+               if (!this->BindAddr())
+                       return false;
+       }
 
-       log(DEBUG,"Part 2 DoConnect() %s",this->IP);
+       this->Instance->Log(DEBUG,"Part 2 DoConnect() %s",this->IP);
        insp_aton(this->IP,&addy);
 #ifdef IPV6
        addr.sin6_family = AF_FAMILY;
-       memcpy(&addy, &addr.sin6_addr, sizeof(insp_inaddr));
+       memcpy(&addr.sin6_addr, &addy, sizeof(insp_inaddr));
        addr.sin6_port = htons(this->port);
 #else
        addr.sin_family = AF_FAMILY;
@@ -278,37 +242,40 @@ bool InspSocket::DoConnect()
        {
                if (errno != EINPROGRESS)
                {
-                       log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
+                       this->Instance->Log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
                        this->OnError(I_ERR_CONNECT);
                        this->Close();
                        this->state = I_ERROR;
-                       this->fd = -1;
-                       this->ClosePending = true;
                        return false;
                }
+
+               this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time());
+               this->Instance->Timers->AddTimer(this->Timeout);
        }
        this->state = I_CONNECTING;
        if (this->fd > -1)
        {
-               ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
-               socket_ref[this->fd] = this;
+               if (!this->Instance->SE->AddFd(this))
+               {
+                       this->OnError(I_ERR_NOMOREFDS);
+                       this->Close();
+                       this->state = I_ERROR;
+                       return false;
+               }
                this->SetQueues(this->fd);
        }
-       log(DEBUG,"Returning true from InspSocket::DoConnect");
+       this->Instance->Log(DEBUG,"Returning true from InspSocket::DoConnect");
        return true;
 }
 
 
 void InspSocket::Close()
 {
-       if (this->fd != -1)
+       if (this->fd > -1)
        {
                this->OnClose();
                shutdown(this->fd,2);
                close(this->fd);
-               socket_ref[this->fd] = NULL;
-               this->ClosePending = true;
-               this->fd = -1;
        }
 }
 
@@ -329,13 +296,17 @@ char* InspSocket::Read()
        }
        else
        {
-               if (errno == EAGAIN)
+               int err = errno;
+               if (err == EAGAIN)
                {
                        return "";
                }
                else
                {
-                       log(DEBUG,"EOF or error on socket: %s",strerror(errno));
+                       if (!n)
+                               this->Instance->Log(DEBUG,"EOF or error on socket: EOF");
+                       else
+                               this->Instance->Log(DEBUG,"EOF or error on socket: %s",strerror(err));
                        return NULL;
                }
        }
@@ -343,8 +314,7 @@ char* InspSocket::Read()
 
 void InspSocket::MarkAsClosed()
 {
-       log(DEBUG,"Marked as closed");
-       this->ClosePending = true;
+       this->Instance->Log(DEBUG,"Marked as closed");
 }
 
 // There are two possible outcomes to this function.
@@ -353,14 +323,6 @@ void InspSocket::MarkAsClosed()
 // and should be aborted.
 int InspSocket::Write(const std::string &data)
 {
-       if (this->ClosePending)
-               return false;
-
-       /*int result = write(this->fd,data.c_str(),data.length());
-       if (result < 1)
-               return false;
-       return true;*/
-
        /* Try and append the data to the back of the queue, and send it on its way
         */
        outbuffer.push_back(data);
@@ -369,9 +331,6 @@ int InspSocket::Write(const std::string &data)
 
 bool InspSocket::FlushWriteBuffer()
 {
-       if (this->ClosePending)
-               return true;
-
        if ((this->fd > -1) && (this->state == I_CONNECTED))
        {
                if (outbuffer.size())
@@ -394,10 +353,9 @@ bool InspSocket::FlushWriteBuffer()
                        }
                        else if ((result == -1) && (errno != EAGAIN))
                        {
-                               log(DEBUG,"Write error on socket: %s",strerror(errno));
+                               this->Instance->Log(DEBUG,"Write error on socket: %s",strerror(errno));
                                this->OnError(I_ERR_WRITE);
                                this->state = I_ERROR;
-                               this->ClosePending = true;
                                return true;
                        }
                }
@@ -405,64 +363,57 @@ bool InspSocket::FlushWriteBuffer()
        return (fd < 0);
 }
 
-bool InspSocket::Timeout(time_t current)
+void SocketTimeout::Tick(time_t now)
 {
-       if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
+       if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
        {
-               log(DEBUG,"No FD or socket ref");
-               return false;
+               ServerInstance->Log(DEBUG,"No FD or socket ref");
+               return;
        }
 
-       if (this->ClosePending)
+       if (this->sock->state == I_CONNECTING)
        {
-               log(DEBUG,"Close is pending");
-               return true;
-       }
-
-       if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
-       {
-               log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
+               ServerInstance->Log(DEBUG,"Timed out, current=%lu",now);
                // 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;
-               this->ClosePending = true;
-               return true;
+               this->sock->OnTimeout();
+               this->sock->OnError(I_ERR_TIMEOUT);
+               this->sock->timeout = true;
+               this->sock->state = I_ERROR;
+               ServerInstance->SE->DelFd(this->sock);
+               this->sock->Close();
+               delete this->sock;
+               return;
        }
-       return this->FlushWriteBuffer();
+       this->sock->FlushWriteBuffer();
 }
 
 bool InspSocket::Poll()
 {
-       if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
+       if (this->Instance->SE->GetRef(this->fd) != this)
                return false;
 
        int incoming = -1;
        bool n = true;
 
-       if ((fd < 0) || (fd > MAX_DESCRIPTORS) || (this->ClosePending))
+       if ((fd < 0) || (fd > MAX_DESCRIPTORS))
                return false;
 
        switch (this->state)
        {
-               case I_RESOLVING:
-                       log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
-                       return this->DoResolve();
-               break;
                case I_CONNECTING:
-                       log(DEBUG,"State = I_CONNECTING");
-                       this->SetState(I_CONNECTED);
+                       this->Instance->Log(DEBUG,"State = I_CONNECTING");
                        /* Our socket was in write-state, so delete it and re-add it
                         * in read-state.
                         */
                        if (this->fd > -1)
                        {
-                               ServerInstance->SE->DelFd(this->fd);
-                               ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
+                               this->Instance->SE->DelFd(this);
+                               this->SetState(I_CONNECTED);
+                               if (!this->Instance->SE->AddFd(this))
+                                       return false;
                        }
                        return this->OnConnected();
                break;
@@ -482,8 +433,11 @@ bool InspSocket::Poll()
                        if (this->WaitingForWriteEvent)
                        {
                                /* Switch back to read events */
-                               ServerInstance->SE->DelFd(this->fd);
-                               ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
+                               this->Instance->SE->DelFd(this);
+                               this->WaitingForWriteEvent = false;
+                               if (!this->Instance->SE->AddFd(this))
+                                       return false;
+
                                /* Trigger the write event */
                                n = this->OnWriteReady();
                        }
@@ -509,7 +463,7 @@ bool InspSocket::Poll()
 
 void InspSocket::SetState(InspSocketState s)
 {
-       log(DEBUG,"Socket state change");
+       this->Instance->Log(DEBUG,"Socket state change");
        this->state = s;
 }
 
@@ -536,3 +490,14 @@ InspSocket::~InspSocket()
 {
        this->Close();
 }
+
+void InspSocket::HandleEvent(EventType et)
+{
+       if (!this->Poll())
+       {
+               this->Instance->SE->DelFd(this);
+               this->Close();
+               delete this;
+       }
+}
+