X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Finspsocket.cpp;h=68e2c8f96aea8060ae25df558d4bbdda0a6f281e;hb=6bc3d71946b339a5a10ca621b029fe8a5b180d68;hp=eb0ee86c82f524d8a5c48311f5847d055ed00ccf;hpb=be28c7f3c74f5f856be74ebef88316bc69c583b9;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/inspsocket.cpp b/src/inspsocket.cpp
index eb0ee86c8..68e2c8f96 100644
--- a/src/inspsocket.cpp
+++ b/src/inspsocket.cpp
@@ -2,12 +2,9 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *           	  <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
+ *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
  * This program is free but copyrighted software; see
  *            the file COPYING for details.
  *
@@ -35,6 +32,7 @@ InspSocket::InspSocket(InspIRCd* SI)
 	this->fd = -1;
 	this->WaitingForWriteEvent = false;
 	this->Instance = SI;
+	this->IsIOHooked = false;
 }
 
 InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)
@@ -44,6 +42,7 @@ InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)
 	strlcpy(this->IP,ip,MAXBUF);
 	this->WaitingForWriteEvent = false;
 	this->Instance = SI;
+	this->IsIOHooked = false;
 	if (this->fd > -1)
 		this->Instance->SE->AddFd(this);
 }
@@ -54,6 +53,7 @@ InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool
 	this->Instance = SI;
 	strlcpy(host,ipaddr.c_str(),MAXBUF);
 	this->WaitingForWriteEvent = false;
+	this->IsIOHooked = false;
 	if (listening)
 	{
 		if ((this->fd = OpenTCPSocket()) == ERROR)
@@ -119,25 +119,8 @@ InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool
 
 void InspSocket::WantWrite()
 {
-	/** XXX:
-	 * The socket engine may only have each FD in the list ONCE.
-	 * This means we cant watch for write AND read at the same
-	 * time. We have to remove the READ fd, to insert the WRITE
-	 * fd. Once we receive our WRITE event (which WILL ARRIVE,
-	 * pretty much gauranteed) we switch back to watching for
-	 * READ events again.
-	 *
-	 * This behaviour may be fixed in a later version.
-	 */
-	this->Instance->SE->DelFd(this);
+	this->Instance->SE->WantWrite(this);
 	this->WaitingForWriteEvent = true;
-	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)
@@ -273,6 +256,17 @@ void InspSocket::Close()
 {
 	if (this->fd > -1)
 	{
+                if (this->IsIOHooked && Instance->Config->GetIOHook(this))
+		{
+			try
+			{
+				Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd);
+			}
+			catch (CoreException& modexcept)
+			{
+				Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
+			}
+		}
 		this->OnClose();
 		shutdown(this->fd,2);
 		close(this->fd);
@@ -288,7 +282,36 @@ char* InspSocket::Read()
 {
 	if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 		return NULL;
-	int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
+
+	int n = 0;
+
+	if (this->IsIOHooked)
+	{
+		int result2 = 0;
+		int MOD_RESULT = 0;
+		try
+		{
+			MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2);
+		}
+		catch (CoreException& modexcept)
+		{
+			Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
+		}
+		if (MOD_RESULT < 0)
+		{
+			n = -1;
+			errno = EAGAIN;
+		}
+		else
+		{
+			n = result2;
+		}
+	}
+	else
+	{
+		n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
+	}
+
 	if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
 	{
 		ibuf[n] = 0;
@@ -326,42 +349,111 @@ int InspSocket::Write(const std::string &data)
 	/* Try and append the data to the back of the queue, and send it on its way
 	 */
 	outbuffer.push_back(data);
+	this->Instance->SE->WantWrite(this);
 	return (!this->FlushWriteBuffer());
 }
 
 bool InspSocket::FlushWriteBuffer()
 {
+	errno = 0;
 	if ((this->fd > -1) && (this->state == I_CONNECTED))
 	{
-		if (outbuffer.size())
+		if (this->IsIOHooked)
 		{
-			int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
-			if (result > 0)
+			while (outbuffer.size() && (errno != EAGAIN))
 			{
-				if ((unsigned int)result == outbuffer[0].length())
+				try
 				{
-					/* The whole block was written (usually a line)
-					 * Pop the block off the front of the queue
-					 */
-					outbuffer.pop_front();
+					int result = Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length());
+					if (result > 0)
+					{
+						if ((unsigned int)result == outbuffer[0].length())
+						{
+							outbuffer.pop_front();
+						}
+						else
+						{
+							std::string temp = outbuffer[0].substr(result);
+							outbuffer[0] = temp;
+							errno = EAGAIN;
+						}
+					}
+					else if ((result == -1) && (errno != EAGAIN))
+					{
+						this->Instance->Log(DEBUG,"Write error on socket: %s",strerror(errno));
+						this->OnError(I_ERR_WRITE);
+						this->state = I_ERROR;
+						this->Instance->SE->DelFd(this);
+						this->Close();
+						return true;
+					}
+					else if (result == 0)
+					{
+						this->Instance->Log(DEBUG,"Write error on socket: EOF");
+						this->OnError(I_ERR_WRITE);
+						this->state = I_ERROR;
+						this->Instance->SE->DelFd(this);
+						this->Close();
+						return true;
+					}
 				}
-				else
+				catch (CoreException& modexcept)
 				{
-					std::string temp = outbuffer[0].substr(result);
-					outbuffer[0] = temp;
+					Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
+					return true;
 				}
 			}
-			else if ((result == -1) && (errno != EAGAIN))
+		}
+		else
+		{
+			/* If we have multiple lines, try to send them all,
+			 * not just the first one -- Brain
+			 */
+			while (outbuffer.size() && (errno != EAGAIN))
 			{
-				this->Instance->Log(DEBUG,"Write error on socket: %s",strerror(errno));
-				this->OnError(I_ERR_WRITE);
-				this->state = I_ERROR;
-				this->Instance->SE->DelFd(this);
-				this->Close();
-				return true;
+				/* Send a line */
+				int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
+				if (result > 0)
+				{
+					if ((unsigned int)result == outbuffer[0].length())
+					{
+						/* The whole block was written (usually a line)
+						 * Pop the block off the front of the queue,
+						 * dont set errno, because we are clear of errors
+						 * and want to try and write the next block too.
+						 */
+						outbuffer.pop_front();
+					}
+					else
+					{
+						std::string temp = outbuffer[0].substr(result);
+						outbuffer[0] = temp;
+						/* We didnt get the whole line out. arses.
+						 * Try again next time, i guess. Set errno,
+						 * because we shouldnt be writing any more now,
+						 * until the socketengine says its safe to do so.
+						 */
+						errno = EAGAIN;
+					}
+				}
+				else if ((result == -1) && (errno != EAGAIN))
+				{
+					this->Instance->Log(DEBUG,"Write error on socket: %s",strerror(errno));
+					this->OnError(I_ERR_WRITE);
+					this->state = I_ERROR;
+					this->Instance->SE->DelFd(this);
+					this->Close();
+					return true;
+				}
 			}
 		}
 	}
+
+	if ((errno == EAGAIN) && (fd > -1))
+	{
+		this->Instance->SE->WantWrite(this);
+	}
+
 	return (fd < 0);
 }
 
@@ -369,7 +461,7 @@ void SocketTimeout::Tick(time_t now)
 {
 	if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
 	{
-		ServerInstance->Log(DEBUG,"No FD or socket ref");
+		ServerInstance->Log(DEBUG,"Our socket has been deleted before the timeout was reached.");
 		return;
 	}
 
@@ -383,13 +475,16 @@ void SocketTimeout::Tick(time_t now)
 		this->sock->OnTimeout();
 		this->sock->OnError(I_ERR_TIMEOUT);
 		this->sock->timeout = true;
-		this->sock->state = I_ERROR;
 		ServerInstance->SE->DelFd(this->sock);
+		/* NOTE: We must set this AFTER DelFd, as we added
+		 * this socket whilst writeable. This means that we
+		 * must DELETE the socket whilst writeable too!
+		 */
+		this->sock->state = I_ERROR;
 		this->sock->Close();
 		delete this->sock;
 		return;
 	}
-	this->sock->FlushWriteBuffer();
 }
 
 bool InspSocket::Poll()
@@ -398,7 +493,6 @@ bool InspSocket::Poll()
 		return false;
 
 	int incoming = -1;
-	bool n = true;
 
 	if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 		return false;
@@ -417,45 +511,51 @@ bool InspSocket::Poll()
 				if (!this->Instance->SE->AddFd(this))
 					return false;
 			}
+			if (Instance->Config->GetIOHook(this))
+			{
+				try
+				{
+					Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd);
+				}
+				catch (CoreException& modexcept)
+				{
+					Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
+				}
+			}
 			return this->OnConnected();
 		break;
 		case I_LISTENING:
 			length = sizeof (client);
 			incoming = accept (this->fd, (sockaddr*)&client,&length);
-			this->SetQueues(incoming);
+
 #ifdef IPV6
-			this->OnIncomingConnection(incoming,(char*)insp_ntoa(client.sin6_addr));
+			this->OnIncomingConnection(incoming, (char*)insp_ntoa(client.sin6_addr));
 #else
-			this->OnIncomingConnection(incoming,(char*)insp_ntoa(client.sin_addr));
+			this->OnIncomingConnection(incoming, (char*)insp_ntoa(client.sin_addr));
 #endif
-			return true;
-		break;
-		case I_CONNECTED:
-
-			if (this->WaitingForWriteEvent)
-			{
-				/* Switch back to read events */
-				this->Instance->SE->DelFd(this);
-				this->WaitingForWriteEvent = false;
-				if (!this->Instance->SE->AddFd(this))
-					return false;
 
-				/* Trigger the write event */
-				n = this->OnWriteReady();
-			}
-			else
+			if (this->IsIOHooked)
 			{
-				/* Process the read event */
-				n = this->OnDataReady();
+				try
+				{
+#ifdef IPV6
+					Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, insp_ntoa(client.sin6_addr), this->port);
+#else
+					Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, insp_ntoa(client.sin_addr), this->port);
+#endif
+				}
+				catch (CoreException& modexcept)
+				{
+					Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
+				}
 			}
-			/* Flush any pending, but not till after theyre done with the event
-			 * so there are less write calls involved.
-			 * Both FlushWriteBuffer AND the return result of OnDataReady must
-			 * return true for this to be ok.
-			 */
-			if (this->FlushWriteBuffer())
-				return false;
-			return n;
+
+			this->SetQueues(incoming);
+			return true;
+		break;
+		case I_CONNECTED:
+			/* Process the read event */
+			return this->OnDataReady();
 		break;
 		default:
 		break;
@@ -493,13 +593,59 @@ InspSocket::~InspSocket()
 	this->Close();
 }
 
-void InspSocket::HandleEvent(EventType et)
+void InspSocket::HandleEvent(EventType et, int errornum)
 {
-	if (!this->Poll())
+	switch (et)
 	{
-		this->Instance->SE->DelFd(this);
-		this->Close();
-		delete this;
+		case EVENT_ERROR:
+			this->Instance->SE->DelFd(this);
+			this->Close();
+			delete this;
+			return;
+		break;
+		case EVENT_READ:
+			if (!this->Poll())
+			{
+				this->Instance->SE->DelFd(this);
+				this->Close();
+				delete this;
+				return;
+			}
+		break;
+		case EVENT_WRITE:
+			if (this->WaitingForWriteEvent)
+			{
+				this->WaitingForWriteEvent = false;
+				if (!this->OnWriteReady())
+				{
+					this->Instance->SE->DelFd(this);
+					this->Close();
+					delete this;
+					return;
+				}
+			}
+			if (this->state == I_CONNECTING)
+			{
+				/* This might look wrong as if we should be actually calling
+				 * with EVENT_WRITE, but trust me it is correct. There are some
+				 * writeability-state things in the read code, because of how
+				 * InspSocket used to work regarding write buffering in previous
+				 * versions of InspIRCd. - Brain
+				 */
+				this->HandleEvent(EVENT_READ);
+				return;
+			}
+			else
+			{
+				if (this->FlushWriteBuffer())
+				{
+					this->Instance->SE->DelFd(this);
+					this->Close();
+					delete this;
+					return;
+				}
+			}
+		break;
 	}
 }