X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cdc59bb69e3a363d7bb6c3d97507faf918e1af30..a3cf8dca335f4a364a84c6144d4747c2429575a4:/src/common/sckipc.cpp

diff --git a/src/common/sckipc.cpp b/src/common/sckipc.cpp
index 28284b2695..e61654bc51 100644
--- a/src/common/sckipc.cpp
+++ b/src/common/sckipc.cpp
@@ -1,16 +1,17 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        sckipc.cpp
+// Name:        src/common/sckipc.cpp
 // Purpose:     Interprocess communication implementation (wxSocket version)
 // 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
 //              (c) Guilhem Lavaux 1997, 1998
 //              (c) 2000 Guillermo Rodriguez <guille@iies.es>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ==========================================================================
@@ -21,35 +22,28 @@
 // headers
 // --------------------------------------------------------------------------
 
-#ifdef __GNUG__
-#pragma implementation "sckipc.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
+#if wxUSE_SOCKETS && wxUSE_IPC && wxUSE_STREAMS
+
+#include "wx/sckipc.h"
+
 #ifndef WX_PRECOMP
-#include "wx/defs.h"
+    #include "wx/log.h"
+    #include "wx/event.h"
+    #include "wx/module.h"
 #endif
 
-#if wxUSE_SOCKETS && wxUSE_IPC
-
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 
 #include "wx/socket.h"
-#include "wx/sckipc.h"
-#include "wx/module.h"
-#include "wx/event.h"
-#include "wx/log.h"
-
-#ifdef __BORLANDC__
-#pragma hdrstop
-#endif
 
 // --------------------------------------------------------------------------
 // macros and constants
@@ -74,10 +68,47 @@ enum
 };
 #endif
 
-
 // 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__
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+// get the address object for the given server name, the caller must delete it
+static wxSockAddress *
+GetAddressFromName(const wxString& serverName, const wxString& host = wxEmptyString)
+{
+    // we always use INET sockets under non-Unix systems
+#if defined(__UNIX__) && !defined(__WINDOWS__) && !defined(__WINE__)
+    // 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)
 // --------------------------------------------------------------------------
@@ -85,12 +116,13 @@ enum
 class wxTCPEventHandler : public wxEvtHandler
 {
 public:
-  wxTCPEventHandler() : wxEvtHandler() {};
+  wxTCPEventHandler() : wxEvtHandler() {}
 
   void Client_OnRequest(wxSocketEvent& event);
   void Server_OnRequest(wxSocketEvent& event);
 
   DECLARE_EVENT_TABLE()
+  DECLARE_NO_COPY_CLASS(wxTCPEventHandler)
 };
 
 enum
@@ -129,26 +161,29 @@ bool wxTCPClient::ValidHost(const wxString& host)
 }
 
 wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
-                                               const wxString& server_name,
+                                               const wxString& serverName,
                                                const wxString& topic)
 {
+  wxSockAddress *addr = GetAddressFromName(serverName, host);
+  if ( !addr )
+      return NULL;
+
   wxSocketClient *client = new wxSocketClient(SCKIPC_FLAGS);
   wxSocketStream *stream = new wxSocketStream(*client);
   wxDataInputStream *data_is = new wxDataInputStream(*stream);
   wxDataOutputStream *data_os = new wxDataOutputStream(*stream);
 
-  wxIPV4address addr;
-  addr.Service(server_name);
-  addr.Hostname(host);
+  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.
@@ -168,7 +203,7 @@ wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
           client->SetEventHandler(*gs_handler, _CLIENT_ONREQUEST_ID);
           client->SetClientData(connection);
           client->SetNotify(wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
-          client->Notify(TRUE);
+          client->Notify(true);
           return connection;
         }
         else
@@ -191,7 +226,7 @@ wxConnectionBase *wxTCPClient::MakeConnection (const wxString& host,
 
 wxConnectionBase *wxTCPClient::OnMakeConnection()
 {
-  return new wxTCPConnection;
+  return new wxTCPConnection();
 }
 
 // --------------------------------------------------------------------------
@@ -200,28 +235,96 @@ wxConnectionBase *wxTCPClient::OnMakeConnection()
 
 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.fn_str());
+      if ( rc < 0 && errno != ENOENT )
+      {
+          delete addr;
+
+          return false;
+      }
+
+      // 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__
 
-  // Create a socket listening on specified port
-  server = new wxSocketServer(addr, SCKIPC_FLAGS);
-  server->SetEventHandler(*gs_handler, _SERVER_ONREQUEST_ID);
-  server->SetClientData(this);
-  server->SetNotify(wxSOCKET_CONNECTION_FLAG);
-  server->Notify(TRUE);
+  delete addr;
 
-  return TRUE;
+  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.fn_str()) != 0 )
+        {
+            wxLogDebug(_T("Stale AF_UNIX file '%s' left."), m_filename.c_str());
+        }
+    }
+#endif // __UNIX_LIKE__
 }
 
 wxConnectionBase *wxTCPServer::OnAcceptConnection( const wxString& WXUNUSED(topic) )
@@ -241,17 +344,29 @@ wxTCPConnection::wxTCPConnection () : wxConnectionBase()
   m_codeco   = NULL;
 }
 
-wxTCPConnection::wxTCPConnection(char * WXUNUSED(buffer), int WXUNUSED(size))
+wxTCPConnection::wxTCPConnection(void *buffer, size_t size)
+       : wxConnectionBase(buffer, size)
 {
+  m_sock     = NULL;
+  m_sockstrm = NULL;
+  m_codeci   = NULL;
+  m_codeco   = NULL;
 }
 
 wxTCPConnection::~wxTCPConnection ()
 {
+  Disconnect();
+
+  if (m_sock)
+  {
+    m_sock->SetClientData(NULL);
+    m_sock->Destroy();
+  }
+
+  /* Delete after destroy */
   wxDELETE(m_codeci);
   wxDELETE(m_codeco);
   wxDELETE(m_sockstrm);
-
-  if (m_sock) m_sock->Destroy();
 }
 
 void wxTCPConnection::Compress(bool WXUNUSED(on))
@@ -262,33 +377,38 @@ void wxTCPConnection::Compress(bool WXUNUSED(on))
 // Calls that CLIENT can make.
 bool wxTCPConnection::Disconnect ()
 {
+  if ( !GetConnected() )
+      return true;
   // Send the the disconnect message to the peer.
   m_codeco->Write8(IPC_DISCONNECT);
-  m_sock->Notify(FALSE);
-  m_sock->Close();
 
-  return TRUE;
+  if ( m_sock )
+  {
+      m_sock->Notify(false);
+      m_sock->Close();
+  }
+
+  SetConnected(false);
+
+  return true;
 }
 
-bool wxTCPConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
+bool wxTCPConnection::DoExecute(const void *data, size_t size, wxIPCFormat format)
 {
   if (!m_sock->IsConnected())
-    return FALSE;
+    return false;
 
   // Prepare EXECUTE message
   m_codeco->Write8(IPC_EXECUTE);
   m_codeco->Write8(format);
 
-  if (size < 0)
-    size = strlen(data) + 1;    // includes final NUL
-
   m_codeco->Write32(size);
   m_sockstrm->Write(data, size);
 
-  return TRUE;
+  return true;
 }
 
-char *wxTCPConnection::Request (const wxString& item, int *size, wxIPCFormat format)
+const void *wxTCPConnection::Request (const wxString& item, size_t *size, wxIPCFormat format)
 {
   if (!m_sock->IsConnected())
     return NULL;
@@ -305,11 +425,11 @@ char *wxTCPConnection::Request (const wxString& item, int *size, wxIPCFormat for
     return NULL;
   else
   {
-    size_t s;
-    char *data = NULL;
+    size_t s = m_codeci->Read32();
 
-    s = m_codeci->Read32();
-    data = new char[s];
+    void *data = GetBufferAtLeast( s );
+    wxASSERT_MSG(data != NULL,
+                 _T("Buffer too small in wxTCPConnection::Request") );
     m_sockstrm->Read(data, s);
 
     if (size)
@@ -318,22 +438,19 @@ char *wxTCPConnection::Request (const wxString& item, int *size, wxIPCFormat for
   }
 }
 
-bool wxTCPConnection::Poke (const wxString& item, wxChar *data, int size, wxIPCFormat format)
+bool wxTCPConnection::DoPoke (const wxString& item, const void *data, size_t size, wxIPCFormat format)
 {
   if (!m_sock->IsConnected())
-    return FALSE;
+    return false;
 
   m_codeco->Write8(IPC_POKE);
   m_codeco->WriteString(item);
   m_codeco->Write8(format);
 
-  if (size < 0)
-    size = strlen(data) + 1;    // includes final NUL
-
   m_codeco->Write32(size);
   m_sockstrm->Write(data, size);
 
-  return TRUE;
+  return true;
 }
 
 bool wxTCPConnection::StartAdvise (const wxString& item)
@@ -341,7 +458,7 @@ bool wxTCPConnection::StartAdvise (const wxString& item)
   int ret;
 
   if (!m_sock->IsConnected())
-    return FALSE;
+    return false;
 
   m_codeco->Write8(IPC_ADVISE_START);
   m_codeco->WriteString(item);
@@ -349,9 +466,9 @@ bool wxTCPConnection::StartAdvise (const wxString& item)
   ret = m_codeci->Read8();
 
   if (ret != IPC_FAIL)
-    return TRUE;
+    return true;
   else
-    return FALSE;
+    return false;
 }
 
 bool wxTCPConnection::StopAdvise (const wxString& item)
@@ -359,7 +476,7 @@ bool wxTCPConnection::StopAdvise (const wxString& item)
   int msg;
 
   if (!m_sock->IsConnected())
-    return FALSE;
+    return false;
 
   m_codeco->Write8(IPC_ADVISE_STOP);
   m_codeco->WriteString(item);
@@ -367,29 +484,26 @@ bool wxTCPConnection::StopAdvise (const wxString& item)
   msg = m_codeci->Read8();
 
   if (msg != IPC_FAIL)
-    return TRUE;
+    return true;
   else
-    return FALSE;
+    return false;
 }
 
 // Calls that SERVER can make
-bool wxTCPConnection::Advise (const wxString& item,
-                              wxChar *data, int size, wxIPCFormat format)
+bool wxTCPConnection::DoAdvise (const wxString& item,
+                                const void *data, size_t size, wxIPCFormat format)
 {
   if (!m_sock->IsConnected())
-    return FALSE;
+    return false;
 
   m_codeco->Write8(IPC_ADVISE);
   m_codeco->WriteString(item);
   m_codeco->Write8(format);
 
-  if (size < 0)
-    size = strlen(data) + 1;    // includes final NUL
-
   m_codeco->Write32(size);
   m_sockstrm->Write(data, size);
 
-  return TRUE;
+  return true;
 }
 
 // --------------------------------------------------------------------------
@@ -404,20 +518,26 @@ END_EVENT_TABLE()
 void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
 {
   wxSocketBase *sock = event.GetSocket();
+  if (!sock) {		/* No socket, no glory */
+    return ;
+  }
   wxSocketNotify evt = event.GetSocketEvent();
-  wxTCPConnection *connection = (wxTCPConnection *)(event.GetClientData());
+  wxTCPConnection *connection = (wxTCPConnection *)(sock->GetClientData());
+
+  // This socket is being deleted; skip this event
+  if (!connection)
+    return;
 
-  int msg = 0;
   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->Notify(FALSE);
+    sock->Notify(false);
     sock->Close();
     connection->OnDisconnect();
     return;
@@ -427,41 +547,40 @@ void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
   codeci = connection->m_codeci;
   codeco = connection->m_codeco;
   sockstrm = connection->m_sockstrm;
-  msg = codeci->Read8();
+  int msg = codeci->Read8();
 
   switch (msg)
   {
   case IPC_EXECUTE:
   {
-    char *data;
-    size_t size; 
+    void *data;
+    size_t size;
     wxIPCFormat format;
-    
+
     format = (wxIPCFormat)codeci->Read8();
     size = codeci->Read32();
-    data = new char[size];
+    
+    data = connection->GetBufferAtLeast( size );
+    wxASSERT_MSG(data != NULL,
+                 _T("Buffer too small in wxTCPEventHandler::Client_OnRequest") );
     sockstrm->Read(data, size);
 
     connection->OnExecute (topic_name, data, size, format);
 
-    delete [] data;
     break;
   }
   case IPC_ADVISE:
   {
-    char *data;
-    size_t size;
-    wxIPCFormat format;
-
     item = codeci->ReadString();
-    format = (wxIPCFormat)codeci->Read8();
-    size = codeci->Read32();
-    data = new char[size];
+    wxIPCFormat format = (wxIPCFormat)codeci->Read8();
+    size_t size = codeci->Read32();
+    void *data = connection->GetBufferAtLeast( size );
+    wxASSERT_MSG(data != NULL,
+                 _T("Buffer too small in wxTCPEventHandler::Client_OnRequest") );
     sockstrm->Read(data, size);
-    
+
     connection->OnAdvise (topic_name, item, data, size, format);
 
-    delete [] data;
     break;
   }
   case IPC_ADVISE_START:
@@ -490,19 +609,15 @@ void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
   }
   case IPC_POKE:
   {
-    wxIPCFormat format;
-    size_t size;
-    wxChar *data;
-
     item = codeci->ReadString();
-    format = (wxIPCFormat)codeci->Read8();
-    size = codeci->Read32();
-    data = new wxChar[size];
+    wxIPCFormat format = (wxIPCFormat)codeci->Read8();
+    size_t size = codeci->Read32();
+    void *data = connection->GetBufferAtLeast( size );
+    wxASSERT_MSG(data != NULL,
+                 _T("Buffer too small in wxTCPEventHandler::Client_OnRequest") );
     sockstrm->Read(data, size);
-    
-    connection->OnPoke (topic_name, item, data, size, format);
 
-    delete [] data;
+    connection->OnPoke (topic_name, item, data, size, format);
 
     break;
   }
@@ -513,15 +628,28 @@ void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
     item = codeci->ReadString();
     format = (wxIPCFormat)codeci->Read8();
 
-    int user_size = -1;
-    char *user_data = connection->OnRequest (topic_name, item, &user_size, format);
+    size_t user_size = wxNO_LEN;
+    const void *user_data = connection->OnRequest (topic_name, item, &user_size, format);
 
     if (user_data)
     {
       codeco->Write8(IPC_REQUEST_REPLY);
 
-      if (user_size == -1)
-        user_size = strlen(user_data) + 1;      // includes final NUL
+      if (user_size == wxNO_LEN)
+      {
+        switch (format)
+        {
+          case wxIPC_TEXT:
+          case wxIPC_UTF8TEXT:
+            user_size = strlen((const char *)user_data) + 1;  // includes final NUL
+            break;
+          case wxIPC_UNICODETEXT:
+            user_size = (wcslen((const wchar_t *)user_data) + 1) * sizeof(wchar_t);  // includes final NUL
+            break;
+          default:
+            user_size = 0;
+        }
+      }
 
       codeco->Write32(user_size);
       sockstrm->Write(user_data, user_size);
@@ -533,8 +661,9 @@ void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
   }
   case IPC_DISCONNECT:
   {
-    sock->Notify(FALSE);
+    sock->Notify(false);
     sock->Close();
+    connection->SetConnected(false);
     connection->OnDisconnect();
     break;
   }
@@ -547,13 +676,23 @@ void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
 void wxTCPEventHandler::Server_OnRequest(wxSocketEvent &event)
 {
   wxSocketServer *server = (wxSocketServer *) event.GetSocket();
-  wxTCPServer *ipcserv = (wxTCPServer *) event.GetClientData();
+  if (!server) {		/* No server, Then exit */
+	  return ;
+  }
+  wxTCPServer *ipcserv = (wxTCPServer *) server->GetClientData();
+
+  // 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();
+  if (!sock) {		/* No socket, no glory */
+	  return ;
+  }
   if (!sock->Ok())
   {
     sock->Destroy();
@@ -582,14 +721,14 @@ void wxTCPEventHandler::Server_OnRequest(wxSocketEvent &event)
         // 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->SetEventHandler(*gs_handler, _CLIENT_ONREQUEST_ID);
         sock->SetClientData(new_connection);
         sock->SetNotify(wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
-        sock->Notify(TRUE);
+        sock->Notify(true);
         return;
       }
       else
@@ -613,12 +752,12 @@ void wxTCPEventHandler::Server_OnRequest(wxSocketEvent &event)
 // wxTCPEventHandlerModule (private class)
 // --------------------------------------------------------------------------
 
-class WXDLLEXPORT wxTCPEventHandlerModule: public wxModule
+class wxTCPEventHandlerModule: public wxModule
 {
   DECLARE_DYNAMIC_CLASS(wxTCPEventHandlerModule)
 
 public:
-  bool OnInit() { gs_handler = new wxTCPEventHandler(); return TRUE; }
+  bool OnInit() { gs_handler = new wxTCPEventHandler(); return true; }
   void OnExit() { wxDELETE(gs_handler); }
 };
 
@@ -626,4 +765,4 @@ IMPLEMENT_DYNAMIC_CLASS(wxTCPEventHandlerModule, wxModule)
 
 
 #endif
-    // wxUSE_SOCKETS && wxUSE_IPC
+   // wxUSE_SOCKETS && wxUSE_IPC && wxUSE_STREAMS