]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/sckipc.cpp
Fix wxListCtrl background colour bug Part I
[wxWidgets.git] / src / common / sckipc.cpp
index 47622c76cac1209c61b18efef834f51a41fa4e53..372c1d627e2ee2572f6a4af3e1c752aca6e26ddf 100644 (file)
@@ -4,6 +4,8 @@
 // Author:      Julian Smart
 // Modified by: Guilhem Lavaux (big rewrite) May 1997, 1998
 //              Guillermo Rodriguez (updated for wxSocket v2) Jan 2000
+//                                  (callbacks deprecated)    Mar 2000
+//              Vadim Zeitlin (added support for Unix sockets) Apr 2002
 // Created:     1993
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart 1993
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
+// ==========================================================================
+// declarations
+// ==========================================================================
+
+// --------------------------------------------------------------------------
+// headers
+// --------------------------------------------------------------------------
+
 #ifdef __GNUG__
 #pragma implementation "sckipc.h"
 #endif
 #endif
 
 #ifndef WX_PRECOMP
-#include "wx/defs.h"
+#include "wx/log.h"
 #endif
 
-#if wxUSE_SOCKETS && wxUSE_IPC
+#if wxUSE_SOCKETS && wxUSE_IPC && wxUSE_STREAMS
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 
 #include "wx/socket.h"
 #include "wx/sckipc.h"
-#include "wx/log.h"
+#include "wx/module.h"
+#include "wx/event.h"
 
-#ifdef __BORLANDC__
-#pragma hdrstop
-#endif
-
-IMPLEMENT_DYNAMIC_CLASS(wxTCPServer, wxServerBase)
-IMPLEMENT_DYNAMIC_CLASS(wxTCPClient, wxClientBase)
-IMPLEMENT_CLASS(wxTCPConnection, wxConnectionBase)
+// --------------------------------------------------------------------------
+// macros and constants
+// --------------------------------------------------------------------------
 
 // It seems to be already defined somewhere in the Xt includes.
 #ifndef __XT__
 // Message codes
-enum {
+enum
+{
   IPC_EXECUTE = 1,
   IPC_REQUEST,
   IPC_POKE,
@@ -62,24 +71,83 @@ enum {
 };
 #endif
 
-void Server_OnRequest(wxSocketServer& server,
-                      wxSocketNotify evt,
-                      char *cdata);
-void Client_OnRequest(wxSocketBase& sock,
-                      wxSocketNotify evt,
-                      char *cdata);
+// All sockets will be created with the following flags
+#define SCKIPC_FLAGS (wxSOCKET_WAITALL)
 
+// headers needed for umask()
+#ifdef __UNIX_LIKE__
+    #include <sys/types.h>
+    #include <sys/stat.h>
+#endif // __UNIX_LIKE__
 
-// All sockets will be created with the following flags
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
 
-#define SCKIPC_FLAGS (wxSOCKET_WAITALL)
+// get the address object for the given server name, the caller must delete it
+static wxSockAddress *
+GetAddressFromName(const wxString& serverName, const wxString& host = _T(""))
+{
+    // we always use INET sockets under non-Unix systems
+#if defined(__UNIX__) && !defined(__WXMAC__)
+    // under Unix, if the server name looks like a path, create a AF_UNIX
+    // socket instead of AF_INET one
+    if ( serverName.Find(_T('/')) != wxNOT_FOUND )
+    {
+        wxUNIXaddress *addr = new wxUNIXaddress;
+        addr->Filename(serverName);
+
+        return addr;
+    }
+#endif // Unix/!Unix
+    {
+        wxIPV4address *addr = new wxIPV4address;
+        addr->Service(serverName);
+        if ( !host.empty() )
+        {
+            addr->Hostname(host);
+        }
+
+        return addr;
+    }
+}
+
+// --------------------------------------------------------------------------
+// wxTCPEventHandler stuff (private class)
+// --------------------------------------------------------------------------
+
+class wxTCPEventHandler : public wxEvtHandler
+{
+public:
+  wxTCPEventHandler() : wxEvtHandler() {};
+
+  void Client_OnRequest(wxSocketEvent& event);
+  void Server_OnRequest(wxSocketEvent& event);
+
+  DECLARE_EVENT_TABLE()
+};
 
-// ---------------------------------------------------------------------------
+enum
+{
+  _CLIENT_ONREQUEST_ID = 1000,
+  _SERVER_ONREQUEST_ID
+};
+
+static wxTCPEventHandler *gs_handler = NULL;
+
+// ==========================================================================
+// implementation
+// ==========================================================================
+
+IMPLEMENT_DYNAMIC_CLASS(wxTCPServer, wxServerBase)
+IMPLEMENT_DYNAMIC_CLASS(wxTCPClient, wxClientBase)
+IMPLEMENT_CLASS(wxTCPConnection, wxConnectionBase)
+
+// --------------------------------------------------------------------------
 // wxTCPClient
-// ---------------------------------------------------------------------------
+// --------------------------------------------------------------------------
 
-wxTCPClient::wxTCPClient ()
-  : wxClientBase()
+wxTCPClient::wxTCPClient () : wxClientBase()
 {
 }
 
@@ -95,7 +163,7 @@ bool wxTCPClient::ValidHost(const wxString& host)
 }
 
 wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
-                                               const wxString& server_name,
+                                               const wxString& serverName,
                                                const wxString& topic)
 {
   wxSocketClient *client = new wxSocketClient(SCKIPC_FLAGS);
@@ -103,18 +171,21 @@ wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
   wxDataInputStream *data_is = new wxDataInputStream(*stream);
   wxDataOutputStream *data_os = new wxDataOutputStream(*stream);
 
-  wxIPV4address addr;
-  addr.Service(server_name);
-  addr.Hostname(host);
+  wxSockAddress *addr = GetAddressFromName(serverName, host);
+  if ( !addr )
+      return NULL;
+
+  bool ok = client->Connect(*addr);
+  delete addr;
 
-  if (client->Connect(addr))
+  if ( ok )
   {
     unsigned char msg;
-  
+
     // Send topic name, and enquire whether this has succeeded
     data_os->Write8(IPC_CONNECT);
     data_os->WriteString(topic);
-  
+
     msg = data_is->Read8();
 
     // OK! Confirmation.
@@ -131,8 +202,8 @@ wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
           connection->m_sockstrm = stream;
           connection->m_codeci = data_is;
           connection->m_codeco = data_os;
-          client->Callback(Client_OnRequest);
-          client->CallbackData((char *)connection);
+          client->SetEventHandler(*gs_handler, _CLIENT_ONREQUEST_ID);
+          client->SetClientData(connection);
           client->SetNotify(wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
           client->Notify(TRUE);
           return connection;
@@ -157,38 +228,105 @@ wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
 
 wxConnectionBase *wxTCPClient::OnMakeConnection()
 {
-  return new wxTCPConnection;
+  return new wxTCPConnection();
 }
 
-// ---------------------------------------------------------------------------
+// --------------------------------------------------------------------------
 // wxTCPServer
-// ---------------------------------------------------------------------------
+// --------------------------------------------------------------------------
 
-wxTCPServer::wxTCPServer ()
-  : wxServerBase()
+wxTCPServer::wxTCPServer () : wxServerBase()
 {
+  m_server = NULL;
 }
 
-bool wxTCPServer::Create(const wxString& server_name)
+bool wxTCPServer::Create(const wxString& serverName)
 {
-  wxSocketServer *server;
+  // Destroy previous server, if any
+  if (m_server)
+  {
+    m_server->SetClientData(NULL);
+    m_server->Destroy();
+    m_server = NULL;
+  }
 
-  // wxIPV4address defaults to INADDR_ANY:0
-  wxIPV4address addr;
-  addr.Service(server_name);
+  wxSockAddress *addr = GetAddressFromName(serverName);
+  if ( !addr )
+      return FALSE;
+
+#ifdef __UNIX_LIKE__
+  mode_t umaskOld;
+  if ( addr->Type() == wxSockAddress::UNIX )
+  {
+      // ensure that the file doesn't exist as otherwise calling socket() would
+      // fail
+      int rc = remove(serverName);
+      if ( rc < 0 && errno != ENOENT )
+      {
+          delete addr;
+
+          return FALSE;
+      }
 
-  // Create a socket listening on specified port
-  server = new wxSocketServer(addr, SCKIPC_FLAGS);
-  server->Callback((wxSocketBase::wxSockCbk)Server_OnRequest);
-  server->CallbackData((char *)this);
-  server->SetNotify(wxSOCKET_CONNECTION_FLAG);
-  server->Notify(TRUE);
+      // also set the umask to prevent the others from reading our file
+      umaskOld = umask(077);
+  }
+  else
+  {
+      // unused anyhow but shut down the compiler warnings
+      umaskOld = 0;
+  }
+#endif // __UNIX_LIKE__
+
+  // Create a socket listening on the specified port
+  m_server = new wxSocketServer(*addr, SCKIPC_FLAGS);
+
+#ifdef __UNIX_LIKE__
+  if ( addr->Type() == wxSockAddress::UNIX )
+  {
+      // restore the umask
+      umask(umaskOld);
+
+      // save the file name to remove it later
+      m_filename = serverName;
+  }
+#endif // __UNIX_LIKE__
+
+  delete addr;
+
+  if (!m_server->Ok())
+  {
+    m_server->Destroy();
+    m_server = NULL;
+
+    return FALSE;
+  }
+
+  m_server->SetEventHandler(*gs_handler, _SERVER_ONREQUEST_ID);
+  m_server->SetClientData(this);
+  m_server->SetNotify(wxSOCKET_CONNECTION_FLAG);
+  m_server->Notify(TRUE);
 
   return TRUE;
 }
 
 wxTCPServer::~wxTCPServer()
 {
+    if (m_server)
+    {
+        m_server->SetClientData(NULL);
+        m_server->Destroy();
+    }
+
+#ifdef __UNIX_LIKE__
+    if ( !m_filename.empty() )
+    {
+        if ( !remove(m_filename) )
+        {
+            wxLogDebug(_T("Stale AF_UNIX file '%s' left."), m_filename.c_str());
+        }
+    }
+#endif // __UNIX_LIKE__
 }
 
 wxConnectionBase *wxTCPServer::OnAcceptConnection( const wxString& WXUNUSED(topic) )
@@ -196,14 +334,16 @@ wxConnectionBase *wxTCPServer::OnAcceptConnection( const wxString& WXUNUSED(topi
   return new wxTCPConnection();
 }
 
-// ---------------------------------------------------------------------------
+// --------------------------------------------------------------------------
 // wxTCPConnection
-// ---------------------------------------------------------------------------
+// --------------------------------------------------------------------------
 
-wxTCPConnection::wxTCPConnection ()
-  : wxConnectionBase(),
-    m_sock(NULL), m_sockstrm(NULL), m_codeci(NULL), m_codeco(NULL)
+wxTCPConnection::wxTCPConnection () : wxConnectionBase()
 {
+  m_sock     = NULL;
+  m_sockstrm = NULL;
+  m_codeci   = NULL;
+  m_codeco   = NULL;
 }
 
 wxTCPConnection::wxTCPConnection(char * WXUNUSED(buffer), int WXUNUSED(size))
@@ -216,7 +356,11 @@ wxTCPConnection::~wxTCPConnection ()
   wxDELETE(m_codeco);
   wxDELETE(m_sockstrm);
 
-  if (m_sock) m_sock->Destroy();
+  if (m_sock)
+  {
+    m_sock->SetClientData(NULL);
+    m_sock->Destroy();
+  }
 }
 
 void wxTCPConnection::Compress(bool WXUNUSED(on))
@@ -229,7 +373,7 @@ bool wxTCPConnection::Disconnect ()
 {
   // Send the the disconnect message to the peer.
   m_codeco->Write8(IPC_DISCONNECT);
-  m_sock->Callback(NULL);
+  m_sock->Notify(FALSE);
   m_sock->Close();
 
   return TRUE;
@@ -245,7 +389,7 @@ bool wxTCPConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
   m_codeco->Write8(format);
 
   if (size < 0)
-    size = strlen(data) + 1;    // includes final NUL
+    size = wxStrlen(data) + 1;    // includes final NUL
 
   m_codeco->Write32(size);
   m_sockstrm->Write(data, size);
@@ -293,7 +437,7 @@ bool wxTCPConnection::Poke (const wxString& item, wxChar *data, int size, wxIPCF
   m_codeco->Write8(format);
 
   if (size < 0)
-    size = strlen(data) + 1;    // includes final NUL
+    size = wxStrlen(data) + 1;    // includes final NUL
 
   m_codeco->Write32(size);
   m_sockstrm->Write(data, size);
@@ -349,7 +493,7 @@ bool wxTCPConnection::Advise (const wxString& item,
   m_codeco->Write8(format);
 
   if (size < 0)
-    size = strlen(data) + 1;    // includes final NUL
+    size = wxStrlen(data) + 1;    // includes final NUL
 
   m_codeco->Write32(size);
   m_sockstrm->Write(data, size);
@@ -357,23 +501,37 @@ bool wxTCPConnection::Advise (const wxString& item,
   return TRUE;
 }
 
-void Client_OnRequest(wxSocketBase& sock,
-                      wxSocketNotify evt,
-                      char *cdata)
+// --------------------------------------------------------------------------
+// wxTCPEventHandler (private class)
+// --------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(wxTCPEventHandler, wxEvtHandler)
+  EVT_SOCKET(_CLIENT_ONREQUEST_ID, wxTCPEventHandler::Client_OnRequest)
+  EVT_SOCKET(_SERVER_ONREQUEST_ID, wxTCPEventHandler::Server_OnRequest)
+END_EVENT_TABLE()
+
+void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
 {
+  wxSocketBase *sock = event.GetSocket();
+  wxSocketNotify evt = event.GetSocketEvent();
+  wxTCPConnection *connection = (wxTCPConnection *)(sock->GetClientData());
+
+  // This socket is being deleted; skip this event
+  if (!connection)
+    return;
+
   int msg = 0;
-  wxTCPConnection *connection = (wxTCPConnection *)cdata;
   wxDataInputStream *codeci;
-  wxDataOutputStream *codeco; 
+  wxDataOutputStream *codeco;
   wxSocketStream *sockstrm;
   wxString topic_name = connection->m_topic;
   wxString item;
 
-  // The socket handler signals us that we lost the connection: destroy all.
+  // We lost the connection: destroy everything
   if (evt == wxSOCKET_LOST)
   {
-    sock.Callback(NULL);
-    sock.Close();
+    sock->Notify(FALSE);
+    sock->Close();
     connection->OnDisconnect();
     return;
   }
@@ -389,9 +547,9 @@ void Client_OnRequest(wxSocketBase& sock,
   case IPC_EXECUTE:
   {
     char *data;
-    size_t size; 
+    size_t size;
     wxIPCFormat format;
-    
+
     format = (wxIPCFormat)codeci->Read8();
     size = codeci->Read32();
     data = new char[size];
@@ -413,7 +571,7 @@ void Client_OnRequest(wxSocketBase& sock,
     size = codeci->Read32();
     data = new char[size];
     sockstrm->Read(data, size);
-    
+
     connection->OnAdvise (topic_name, item, data, size, format);
 
     delete [] data;
@@ -454,7 +612,7 @@ void Client_OnRequest(wxSocketBase& sock,
     size = codeci->Read32();
     data = new wxChar[size];
     sockstrm->Read(data, size);
-    
+
     connection->OnPoke (topic_name, item, data, size, format);
 
     delete [] data;
@@ -488,9 +646,8 @@ void Client_OnRequest(wxSocketBase& sock,
   }
   case IPC_DISCONNECT:
   {
-    wxLogDebug("IPC_DISCONNECT");
-    sock.Callback(NULL);
-    sock.Close();
+    sock->Notify(FALSE);
+    sock->Close();
     connection->OnDisconnect();
     break;
   }
@@ -500,29 +657,29 @@ void Client_OnRequest(wxSocketBase& sock,
   }
 }
 
-void Server_OnRequest(wxSocketServer& server,
-                      wxSocketNotify evt,
-                      char *cdata)
+void wxTCPEventHandler::Server_OnRequest(wxSocketEvent &event)
 {
-  wxTCPServer *ipcserv = (wxTCPServer *)cdata;
-  wxSocketStream *stream;
-  wxDataInputStream *codeci;
-  wxDataOutputStream *codeco;
+  wxSocketServer *server = (wxSocketServer *) event.GetSocket();
+  wxTCPServer *ipcserv = (wxTCPServer *) server->GetClientData();
 
-  if (evt != wxSOCKET_CONNECTION)
+  // This socket is being deleted; skip this event
+  if (!ipcserv)
+    return;
+
+  if (event.GetSocketEvent() != wxSOCKET_CONNECTION)
     return;
 
   // Accept the connection, getting a new socket
-  wxSocketBase *sock = server.Accept();
+  wxSocketBase *sock = server->Accept();
   if (!sock->Ok())
   {
     sock->Destroy();
     return;
   }
 
-  stream = new wxSocketStream(*sock);
-  codeci = new wxDataInputStream(*stream);
-  codeco = new wxDataOutputStream(*stream);
+  wxSocketStream *stream     = new wxSocketStream(*sock);
+  wxDataInputStream *codeci  = new wxDataInputStream(*stream);
+  wxDataOutputStream *codeco = new wxDataOutputStream(*stream);
 
   int msg;
   msg = codeci->Read8();
@@ -542,12 +699,12 @@ void Server_OnRequest(wxSocketServer& server,
         // Acknowledge success
         codeco->Write8(IPC_CONNECT);
         new_connection->m_topic = topic_name;
-        new_connection->m_sock = sock;      
+        new_connection->m_sock = sock;
         new_connection->m_sockstrm = stream;
         new_connection->m_codeci = codeci;
         new_connection->m_codeco = codeco;
-        sock->Callback(Client_OnRequest);
-        sock->CallbackData((char *)new_connection);
+        sock->SetEventHandler(*gs_handler, _CLIENT_ONREQUEST_ID);
+        sock->SetClientData(new_connection);
         sock->SetNotify(wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
         sock->Notify(TRUE);
         return;
@@ -569,5 +726,21 @@ void Server_OnRequest(wxSocketServer& server,
   sock->Destroy();
 }
 
+// --------------------------------------------------------------------------
+// wxTCPEventHandlerModule (private class)
+// --------------------------------------------------------------------------
+
+class WXDLLEXPORT wxTCPEventHandlerModule: public wxModule
+{
+  DECLARE_DYNAMIC_CLASS(wxTCPEventHandlerModule)
+
+public:
+  bool OnInit() { gs_handler = new wxTCPEventHandler(); return TRUE; }
+  void OnExit() { wxDELETE(gs_handler); }
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxTCPEventHandlerModule, wxModule)
+
+
 #endif
     // wxUSE_SOCKETS && wxUSE_IPC