Migrating to new directory structure adopted from the RealVNC's source tree. More changes will follow.

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@591 3789f03b-4d11-0410-bbf8-ca57d06f2519

1 files changed, 213 insertions, 0 deletions

diff --git a/win/rfb_win32/SocketManager.cxx b/win/rfb_win32/SocketManager.cxx
new file mode 100644
index 00000000..1d52bc86
--- /dev/null
+++ b/win/rfb_win32/SocketManager.cxx
@@ -0,0 +1,213 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// -=- SocketManager.cxx
+
+#include <winsock2.h>
+#include <list>
+#include <rfb/LogWriter.h>
+#include <rfb_win32/SocketManager.h>
+
+using namespace rfb;
+using namespace rfb::win32;
+
+static LogWriter vlog("SocketManager");
+
+
+// -=- SocketManager
+
+SocketManager::SocketManager() {
+}
+
+SocketManager::~SocketManager() {
+}
+
+
+static requestAddressChangeEvents(network::SocketListener* sock_) {
+  DWORD dummy = 0;
+  if (WSAIoctl(sock_->getFd(), SIO_ADDRESS_LIST_CHANGE, 0, 0, 0, 0, &dummy, 0, 0) == SOCKET_ERROR) {
+    DWORD err = WSAGetLastError();
+    if (err != WSAEWOULDBLOCK)
+      vlog.error("Unable to track address changes", err);
+  }
+}
+
+
+void SocketManager::addListener(network::SocketListener* sock_,
+                                network::SocketServer* srvr,
+                                AddressChangeNotifier* acn) {
+  WSAEVENT event = WSACreateEvent();
+  long flags = FD_ACCEPT | FD_CLOSE;
+  if (acn)
+    flags |= FD_ADDRESS_LIST_CHANGE;
+  try {
+    if (event && (WSAEventSelect(sock_->getFd(), event, flags) == SOCKET_ERROR))
+      throw rdr::SystemException("Unable to select on listener", WSAGetLastError());
+
+    // requestAddressChangeEvents MUST happen after WSAEventSelect, so that the socket is non-blocking
+    if (acn)
+      requestAddressChangeEvents(sock_);
+
+    // addEvent is the last thing we do, so that the event is NOT registered if previous steps fail
+    if (!event || !addEvent(event, this))
+      throw rdr::Exception("Unable to add listener");
+  } catch (rdr::Exception& e) {
+    if (event)
+      WSACloseEvent(event);
+    delete sock_;
+    vlog.error(e.str());
+    throw;
+  }
+
+  ListenInfo li;
+  li.sock = sock_;
+  li.server = srvr;
+  li.notifier = acn;
+  listeners[event] = li;
+}
+
+void SocketManager::remListener(network::SocketListener* sock) {
+  std::map<HANDLE,ListenInfo>::iterator i;
+  for (i=listeners.begin(); i!=listeners.end(); i++) {
+    if (i->second.sock == sock) {
+      removeEvent(i->first);
+      WSACloseEvent(i->first);
+      delete sock;
+      listeners.erase(i);
+      return;
+    }
+  }
+  throw rdr::Exception("Listener not registered");
+}
+
+
+void SocketManager::addSocket(network::Socket* sock_, network::SocketServer* srvr, bool outgoing) {
+  WSAEVENT event = WSACreateEvent();
+  if (!event || !addEvent(event, this) ||
+      (WSAEventSelect(sock_->getFd(), event, FD_READ | FD_CLOSE) == SOCKET_ERROR)) {
+    if (event)
+      WSACloseEvent(event);
+    delete sock_;
+    vlog.error("Unable to add connection");
+    return;
+  }
+  ConnInfo ci;
+  ci.sock = sock_;
+  ci.server = srvr;
+  connections[event] = ci;
+  srvr->addSocket(sock_, outgoing);
+}
+
+void SocketManager::remSocket(network::Socket* sock_) {
+  std::map<HANDLE,ConnInfo>::iterator i;
+  for (i=connections.begin(); i!=connections.end(); i++) {
+    if (i->second.sock == sock_) {
+      i->second.server->removeSocket(sock_);
+      removeEvent(i->first);
+      WSACloseEvent(i->first);
+      delete sock_;
+      connections.erase(i);
+      return;
+    }
+  }
+  throw rdr::Exception("Socket not registered");
+}
+
+
+int SocketManager::checkTimeouts() {
+  network::SocketServer* server = 0;
+  int timeout = EventManager::checkTimeouts();
+
+  std::map<HANDLE,ListenInfo>::iterator i;
+  for (i=listeners.begin(); i!=listeners.end(); i++)
+    soonestTimeout(&timeout, i->second.server->checkTimeouts());
+
+  std::list<network::Socket*> shutdownSocks;
+  std::map<HANDLE,ConnInfo>::iterator j, j_next;
+  for (j=connections.begin(); j!=connections.end(); j=j_next) {
+    j_next = j; j_next++;
+    if (j->second.sock->isShutdown())
+      shutdownSocks.push_back(j->second.sock);
+  }
+
+  std::list<network::Socket*>::iterator k;
+  for (k=shutdownSocks.begin(); k!=shutdownSocks.end(); k++)
+    remSocket(*k);
+
+  return timeout;
+}
+
+
+void SocketManager::processEvent(HANDLE event) {
+  if (listeners.count(event)) {
+    ListenInfo li = listeners[event];
+
+    // Accept an incoming connection
+    vlog.debug("accepting incoming connection");
+
+    // What kind of event is this?
+    WSANETWORKEVENTS network_events;
+    WSAEnumNetworkEvents(li.sock->getFd(), event, &network_events);
+    if (network_events.lNetworkEvents & FD_ACCEPT) {
+      network::Socket* new_sock = li.sock->accept();
+      if (new_sock && li.server->getDisable()) {
+        delete new_sock;
+        new_sock = 0;
+      }
+      if (new_sock)
+        addSocket(new_sock, li.server, false);
+    } else if (network_events.lNetworkEvents & FD_CLOSE) {
+      vlog.info("deleting listening socket");
+      remListener(li.sock);
+    } else if (network_events.lNetworkEvents & FD_ADDRESS_LIST_CHANGE) {
+      li.notifier->processAddressChange(li.sock);
+      DWORD dummy = 0;
+      requestAddressChangeEvents(li.sock);
+    } else {
+      vlog.error("unknown listener event: %lx", network_events.lNetworkEvents);
+    }
+  } else if (connections.count(event)) {
+    ConnInfo ci = connections[event];
+
+    try {
+      // Process data from an active connection
+
+      // Cancel event notification for this socket
+      if (WSAEventSelect(ci.sock->getFd(), event, 0) == SOCKET_ERROR)
+        throw rdr::SystemException("unable to disable WSAEventSelect:%u", WSAGetLastError());
+
+      // Reset the event object
+      WSAResetEvent(event);
+
+      // Call the socket server to process the event
+      ci.server->processSocketEvent(ci.sock);
+      if (ci.sock->isShutdown()) {
+        remSocket(ci.sock);
+        return;
+      }
+
+      // Re-instate the required socket event
+      // If the read event is still valid, the event object gets set here
+      if (WSAEventSelect(ci.sock->getFd(), event, FD_READ | FD_CLOSE) == SOCKET_ERROR)
+        throw rdr::SystemException("unable to re-enable WSAEventSelect:%u", WSAGetLastError());
+    } catch (rdr::Exception& e) {
+      vlog.error(e.str());
+      remSocket(ci.sock);
+    }
+  }
+}