Inserted "stdio catch" in wxExecute. The activation is controlled by wxProcess.

[wxWidgets.git] / src / unix / dialup.cpp

diff --git a/src/unix/dialup.cpp b/src/unix/dialup.cpp
index 3a345a7dbbaa70e826bf3d80726cdbe9c35cae00..6641d377b46a2f16c1fc5edf10dc099621562f63 100644 (file)
--- a/src/unix/dialup.cpp
+++ b/src/unix/dialup.cpp
@@ -44,6 +44,7 @@
 #include <netdb.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>

+#include <errno.h>

 
 // ----------------------------------------------------------------------------
 // A class which groups functions dealing with connecting to the network from a
 
 // ----------------------------------------------------------------------------
 // A class which groups functions dealing with connecting to the network from a


@@ -103,11 +104,8 @@ public:
    // the "well-known host" (as specified by SetWellKnownHost) is reachable
    virtual bool IsOnline() const
       {
    // the "well-known host" (as specified by SetWellKnownHost) is reachable
    virtual bool IsOnline() const
       {

-         if( (! m_timer) // we are not polling, so test now:
-             || m_IsOnline < 0
-            )
-            CheckStatus();
-         return m_IsOnline != 0;
+         CheckStatus();
+         return m_IsOnline > 0;

       }
 
    /// do we have a constant net connection? -- GUESS!
       }
 
    /// do we have a constant net connection? -- GUESS!


@@ -126,7 +124,7 @@ public:
 
    size_t GetISPNames(class wxArrayString &) const
       { return 0; }
 
    size_t GetISPNames(class wxArrayString &) const
       { return 0; }

-   
+

    // sometimes the built-in logic for determining the online status may fail,
    // so, in general, the user should be allowed to override it. This function
    // allows to forcefully set the online status - whatever our internal
    // sometimes the built-in logic for determining the online status may fail,
    // so, in general, the user should be allowed to override it. This function
    // allows to forcefully set the online status - whatever our internal


@@ -170,6 +168,11 @@ private:
    /// The path to ifconfig
    wxString m_IfconfigPath;
 
    /// The path to ifconfig
    wxString m_IfconfigPath;
 

+   ///  Can we use ping to find hosts?
+   int m_CanUsePing;
+   /// The path to ping program
+   wxString m_PingPath;
+

    /// beacon host:
    wxString m_BeaconHost;
    /// beacon host portnumber for connect:
    /// beacon host:
    wxString m_BeaconHost;
    /// beacon host portnumber for connect:


@@ -196,6 +199,16 @@ private:
 
    /// real status check
    void CheckStatusInternal(void);
 
    /// real status check
    void CheckStatusInternal(void);

+
+   /// Check /proc/net (Linux only)
+   int CheckProcNet(void);
+   /// Check output of ifconfig command for PPP/SLIP/PLIP devices
+   int CheckIfconfig(void);
+   /// Ping a host: 1 on success, -1 if it cannot be used, 0 if unreachable
+   int CheckPing(void);
+   /// Check by connecting to host on given port.
+   int CheckConnect(void);
+

 };
 
 
 };
 
 


@@ -208,11 +221,11 @@ public:
          m_started = FALSE;
       }
 
          m_started = FALSE;
       }
 

-   virtual bool Start( int millisecs = -1 )
+   virtual bool Start( int millisecs = -1, bool WXUNUSED(one_shot) = FALSE )

       { m_started = TRUE; return wxTimer::Start(millisecs, FALSE); }
 
    virtual void Notify()
       { m_started = TRUE; return wxTimer::Start(millisecs, FALSE); }
 
    virtual void Notify()

-      { wxLogTrace("Checking dial up network status."); m_dupman->CheckStatus(); }
+      { wxLogTrace(wxT("Checking dial up network status.")); m_dupman->CheckStatus(); }

 
    virtual void Stop()
       { if ( m_started ) wxTimer::Stop(); }
 
    virtual void Stop()
       { if ( m_started ) wxTimer::Stop(); }


@@ -229,7 +242,7 @@ public:
          m_DupMan = dupman;
       }
    void Disconnect(void) { m_DupMan = NULL; }
          m_DupMan = dupman;
       }
    void Disconnect(void) { m_DupMan = NULL; }

-   void OnTerminate(int WXUNUSED(pid), int WXUNUSED(status)) const
+   virtual void OnTerminate(int WXUNUSED(pid), int WXUNUSED(status))

       {
          if(m_DupMan)
          {
       {
          if(m_DupMan)
          {


@@ -244,18 +257,31 @@ private:
 
 wxDialUpManagerImpl::wxDialUpManagerImpl()
 {
 
 wxDialUpManagerImpl::wxDialUpManagerImpl()
 {

-   m_IsOnline = -2; // -1 or -2, unknown
+   /* The isOnline flag can have the following values internally:
+      0  : not connected
+      1  : connected
+      -1 : unknown/undefined status
+   */
+   m_IsOnline = -1; 

    m_DialProcess = NULL;
    m_timer = NULL;
    m_CanUseIfconfig = -1; // unknown
    m_DialProcess = NULL;
    m_timer = NULL;
    m_CanUseIfconfig = -1; // unknown

+   m_CanUsePing = -1; // unknown

    m_BeaconHost = WXDIALUP_MANAGER_DEFAULT_BEACONHOST;
    m_BeaconPort = 80;
    m_BeaconHost = WXDIALUP_MANAGER_DEFAULT_BEACONHOST;
    m_BeaconPort = 80;

-   SetConnectCommand("pon", "poff"); // default values for Debian/GNU linux
+
+#ifdef __SGI__
+   m_ConnectCommand = _T("/usr/etc/ppp");
+#elif defined(__LINUX__)
+   // default values for Debian/GNU linux
+   m_ConnectCommand = _T("pon");
+   m_HangUpCommand = _T("poff");
+#endif
+

    wxChar * dial = wxGetenv(_T("WXDIALUP_DIALCMD"));
    wxChar * hup = wxGetenv(_T("WXDIALUP_HUPCMD"));
    wxChar * dial = wxGetenv(_T("WXDIALUP_DIALCMD"));
    wxChar * hup = wxGetenv(_T("WXDIALUP_HUPCMD"));

-   if(dial || hup)
-      SetConnectCommand(dial ? wxString(dial) : m_ConnectCommand,
-                        hup ? wxString(hup) : m_HangUpCommand); 
+   SetConnectCommand(dial ? wxString(dial) : m_ConnectCommand,
+                     hup ? wxString(hup) : m_HangUpCommand);

 }
 
 wxDialUpManagerImpl::~wxDialUpManagerImpl()
 }
 
 wxDialUpManagerImpl::~wxDialUpManagerImpl()


@@ -276,10 +302,9 @@ wxDialUpManagerImpl::Dial(const wxString &isp,
 {
    if(m_IsOnline == 1)
       return FALSE;
 {
    if(m_IsOnline == 1)
       return FALSE;

-   m_IsOnline = -1;

    m_ISPname = isp;
    wxString cmd;
    m_ISPname = isp;
    wxString cmd;

-   if(m_ConnectCommand.Find("%s"))
+   if(m_ConnectCommand.Find(wxT("%s")))

       cmd.Printf(m_ConnectCommand,m_ISPname.c_str());
    else
       cmd = m_ConnectCommand;
       cmd.Printf(m_ConnectCommand,m_ISPname.c_str());
    else
       cmd = m_ConnectCommand;


@@ -287,7 +312,7 @@ wxDialUpManagerImpl::Dial(const wxString &isp,
    if ( async )
    {
       m_DialProcess = new wxDialProcess(this);
    if ( async )
    {
       m_DialProcess = new wxDialProcess(this);

-      m_DialPId = wxExecute(cmd, FALSE, m_DialProcess);
+      m_DialPId = (int)wxExecute(cmd, FALSE, m_DialProcess);

       if(m_DialPId == 0)
       {
          delete m_DialProcess;
       if(m_DialPId == 0)
       {
          delete m_DialProcess;


@@ -311,9 +336,8 @@ wxDialUpManagerImpl::HangUp(void)
       wxLogError(_("Already dialling ISP."));
       return FALSE;
    }
       wxLogError(_("Already dialling ISP."));
       return FALSE;
    }

-   m_IsOnline = -1;

    wxString cmd;
    wxString cmd;

-   if(m_HangUpCommand.Find("%s"))
+   if(m_HangUpCommand.Find(wxT("%s")))

       cmd.Printf(m_HangUpCommand,m_ISPname.c_str(), m_DialProcess);
    else
       cmd = m_HangUpCommand;
       cmd.Printf(m_HangUpCommand,m_ISPname.c_str(), m_DialProcess);
    else
       cmd = m_HangUpCommand;


@@ -332,7 +356,7 @@ wxDialUpManagerImpl::CancelDialing()
 bool
 wxDialUpManagerImpl::EnableAutoCheckOnlineStatus(size_t nSeconds)
 {
 bool
 wxDialUpManagerImpl::EnableAutoCheckOnlineStatus(size_t nSeconds)
 {

-   wxASSERT(m_timer == NULL);
+   DisableAutoCheckOnlineStatus();

    m_timer = new AutoCheckTimer(this);
    bool rc = m_timer->Start(nSeconds*1000);
    if(! rc)
    m_timer = new AutoCheckTimer(this);
    bool rc = m_timer->Start(nSeconds*1000);
    if(! rc)


@@ -346,22 +370,31 @@ wxDialUpManagerImpl::EnableAutoCheckOnlineStatus(size_t nSeconds)
 void
 wxDialUpManagerImpl::DisableAutoCheckOnlineStatus()
 {
 void
 wxDialUpManagerImpl::DisableAutoCheckOnlineStatus()
 {

-   wxASSERT(m_timer != NULL);
-   m_timer->Stop();
-   delete m_timer;
-   m_timer = NULL;
+   if(m_timer != NULL)
+   {
+      m_timer->Stop();
+      delete m_timer;
+      m_timer = NULL;
+   }

 }
 
 
 void
 wxDialUpManagerImpl::SetWellKnownHost(const wxString& hostname, int portno)
 {
 }
 
 
 void
 wxDialUpManagerImpl::SetWellKnownHost(const wxString& hostname, int portno)
 {

+   if(hostname.Length() == 0)
+   {
+      m_BeaconHost = WXDIALUP_MANAGER_DEFAULT_BEACONHOST;
+      m_BeaconPort = 80;
+      return;
+   }
+         

    /// does hostname contain a port number?
    /// does hostname contain a port number?

-   wxString port = hostname.After(':');
+   wxString port = hostname.After(wxT(':'));

    if(port.Length())
    {
    if(port.Length())
    {

-      m_BeaconHost = hostname.Before(':');
-      m_BeaconPort = atoi(port);
+      m_BeaconHost = hostname.Before(wxT(':'));
+      m_BeaconPort = wxAtoi(port);

    }
    else
    {
    }
    else
    {


@@ -381,7 +414,12 @@ wxDialUpManagerImpl::CheckStatus(bool fromAsync) const
    ( /* non-const */ (wxDialUpManagerImpl *)this)->CheckStatusInternal();
 
    // now send the events as appropriate:
    ( /* non-const */ (wxDialUpManagerImpl *)this)->CheckStatusInternal();
 
    // now send the events as appropriate:

-   if(m_IsOnline != oldIsOnline && m_IsOnline != -1 && oldIsOnline != -2) // -2: first time!
+   if(m_IsOnline != oldIsOnline // it changed
+      && ( m_IsOnline == 1      // and it is a defined status
+           || m_IsOnline == 0)
+      // only send events for well defined transitions
+      && ( oldIsOnline == 1 || oldIsOnline == 0) 
+      )

    {
       wxDialUpEvent event(m_IsOnline, ! fromAsync);
       (void)wxTheApp->ProcessEvent(event);
    {
       wxDialUpEvent event(m_IsOnline, ! fromAsync);
       (void)wxTheApp->ProcessEvent(event);


@@ -406,14 +444,113 @@ wxDialUpManagerImpl::CheckStatusInternal(void)
 {
    m_IsOnline = -1;
 
 {
    m_IsOnline = -1;
 

-   // First time check for ifconfig location. We only use the variant
-   // which does not take arguments, a la GNU.
-   if(m_CanUseIfconfig == -1) // unknown
+   int testResult;
+
+   testResult = CheckProcNet();
+   if(testResult == -1)
+      testResult = CheckIfconfig();
+   if(testResult == -1)
+      testResult = CheckConnect();
+   if(testResult == -1)
+      testResult = CheckPing();
+   m_IsOnline = testResult;
+}
+
+int
+wxDialUpManagerImpl::CheckConnect(void)
+{
+   // second method: try to connect to a well known host:
+   // This can be used under Win 9x, too!
+   struct hostent     *hp;
+   struct sockaddr_in  serv_addr;
+
+   if((hp = gethostbyname(m_BeaconHost.mb_str())) == NULL)
+      return 0; // no DNS no net
+
+   serv_addr.sin_family = hp->h_addrtype;
+   memcpy(&serv_addr.sin_addr,hp->h_addr, hp->h_length);
+   serv_addr.sin_port = htons(m_BeaconPort);
+
+   int sockfd;
+   if( ( sockfd = socket(hp->h_addrtype, SOCK_STREAM, 0)) < 0)
+   {
+      return -1;  // no info
+   }
+
+   if( connect(sockfd, (struct sockaddr *) &serv_addr,
+               sizeof(serv_addr)) >= 0)

    {
    {

-      if(wxFileExists("/sbin/ifconfig"))
-         m_IfconfigPath = "/sbin/ifconfig";
-      else if(wxFileExists("/usr/sbin/ifconfig"))
-         m_IfconfigPath = "/usr/sbin/ifconfig";
+      close(sockfd);
+      return 1; // we cant connect, so we have a network!
+   }
+   //connected!
+   close(sockfd);
+   if(errno == ENETUNREACH)
+      return 0; // network is unreachable
+   // connect failed, but don't know why
+   return -1;
+}
+
+
+int 
+wxDialUpManagerImpl::CheckProcNet(void)
+{
+   int rc = -1;
+
+#ifdef __LINUX__
+   if (wxFileExists(_T("/proc/net/route")))
+   {
+       // NOTE: cannot use wxFile::Length because file doesn't support
+       // seeking
+       FILE *f = fopen("/proc/net/route", "rt");
+       if (f != NULL)
+       {
+           char output[256];
+          
+          while (fgets(output, 256, f) != NULL)
+          {
+                   if (strstr(output,"ppp")    // ppp
+                       || strstr(output,"sl")  // slip
+                       || strstr(output,"pl")) // plip
+                      rc = 1;
+          }
+          if (rc == -1) rc = 0;
+           fclose(f);
+       }
+   }
+#endif
+   
+   return rc;
+}
+
+
+int
+wxDialUpManagerImpl::CheckIfconfig(void)
+{
+   int rc = -1;
+
+   // First time check for ifconfig location. We only use the variant which
+   // does not take arguments, a la GNU.
+   if ( m_CanUseIfconfig == -1 ) // unknown
+   {
+       static const wxChar *ifconfigLocations[] =
+       {
+           _T("/sbin"),         // Linux, FreeBSD
+           _T("/usr/sbin"),     // SunOS, Solaris, AIX, HP-UX
+           _T("/usr/etc"),      // IRIX
+       };
+
+       for ( size_t n = 0; n < WXSIZEOF(ifconfigLocations); n++ )
+       {
+           wxString path(ifconfigLocations[n]);
+           path << _T("/ifconfig");
+
+           if ( wxFileExists(path) )
+           {
+               m_IfconfigPath = path;
+               break;
+           }
+       }

    }
 
    wxLogNull ln; // suppress all error messages
    }
 
    wxLogNull ln; // suppress all error messages


@@ -424,7 +561,24 @@ wxDialUpManagerImpl::CheckStatusInternal(void)
 
       wxString tmpfile = wxGetTempFileName("_wxdialuptest");
       wxString cmd = "/bin/sh -c \'";
 
       wxString tmpfile = wxGetTempFileName("_wxdialuptest");
       wxString cmd = "/bin/sh -c \'";

-      cmd << m_IfconfigPath << " >" << tmpfile <<  '\'';
+      cmd << m_IfconfigPath;
+#if defined(__SOLARIS__) || defined (__SUNOS__)
+      // need to add -a flag
+      cmd << " -a";
+#elif defined(__LINUX__) || defined(__SGI__)
+      // nothing to be added to ifconfig
+#elif defined(__FREEBSD__)
+      // add -l flag
+      cmd << " -l";
+#elif defined(__HPUX__)
+      // VZ: a wild guess (but without it, ifconfig fails completely)
+      cmd << _T(" ppp0");
+#else
+#     pragma warning "No ifconfig information for this OS."
+      m_CanUseIfconfig = 0;
+      return -1;
+#endif
+      cmd << " >" << tmpfile <<  '\'';

       /* I tried to add an option to wxExecute() to not close stdout,
          so we could let ifconfig write directly to the tmpfile, but
          this does not work. That should be faster, as it doesn´t call
       /* I tried to add an option to wxExecute() to not close stdout,
          so we could let ifconfig write directly to the tmpfile, but
          this does not work. That should be faster, as it doesn´t call


@@ -439,73 +593,78 @@ wxDialUpManagerImpl::CheckStatusInternal(void)
             output[file.Length()] = '\0';
             if(file.Read(output,file.Length()) == file.Length())
             {
             output[file.Length()] = '\0';
             if(file.Read(output,file.Length()) == file.Length())
             {

-               if(strstr(output,"ppp")   // ppp
-                  || strstr(output,"sl") // slip
-                  || strstr(output,"pl") // plip
-                  )
-                  m_IsOnline = 1;
-               else
-                  m_IsOnline = 0;
+               // FIXME shouldn't we grep for "^ppp"? (VZ)
+
+#if defined(__SOLARIS__) || defined (__SUNOS__)
+               // dialup device under SunOS/Solaris
+               rc = strstr(output,"ipdptp") != (char *)NULL;
+#elif defined(__LINUX__) || defined (__FREEBSD__)
+               rc = strstr(output,"ppp")    // ppp
+                    || strstr(output,"sl")  // slip
+                    || strstr(output,"pl"); // plip
+#elif defined(__SGI__)  // IRIX
+               rc = (int) strstr(output, "ppp"); // PPP
+#elif defined(__HPUX__)
+               // if could run ifconfig on interface, then it exists
+               rc = TRUE;
+#endif

             }
             file.Close();
             delete [] output;
          }
             }
             file.Close();
             delete [] output;
          }

-         // else m_IsOnline remains -1 as we don't know for sure
+         // else rc remains -1 as we don't know for sure

       }
       else // could not run ifconfig correctly
          m_CanUseIfconfig = 0; // don´t try again
       (void) wxRemoveFile(tmpfile);
       }
       else // could not run ifconfig correctly
          m_CanUseIfconfig = 0; // don´t try again
       (void) wxRemoveFile(tmpfile);

-      if(m_IsOnline != -1) // we are done
-         return;

    }
 
    }
 

-   // this was supposed to work like ping(8), but doesn´t.
-   // second method: try to connect to a well known host:
-   // This can be used under Win 9x, too!
-   struct hostent     *hp;
-   struct sockaddr_in  serv_addr;
-
-   m_IsOnline = 0; // assume false
-   if((hp = gethostbyname(m_BeaconHost)) == NULL)
-      return; // no DNS no net
-   
-   serv_addr.sin_family                = hp->h_addrtype;
-   memcpy(&serv_addr.sin_addr,hp->h_addr, hp->h_length);
-   serv_addr.sin_port          = htons(m_BeaconPort);
+   return rc;
+}

 
 

-      // PING method:
+int
+wxDialUpManagerImpl::CheckPing(void)
+{
+   if(! m_CanUsePing)
+      return -1;

 
 

-   int sockfd;
-   if( ( sockfd = socket(hp->h_addrtype, SOCK_STREAM, 0)) < 0) 
-   {   
-      //  sys_error("cannot create socket for gw");
-      return;
-   }
-   
-#if 0
-   // this "ping" method does not work.
-   if(sendto(sockfd, "hello",
-             strlen("hello"), /* flags */ 0,
-             (struct  sockaddr *) &serv_addr,
-             sizeof(serv_addr)) == -1)
+   // First time check for ping location. We only use the variant
+   // which does not take arguments, a la GNU.
+   if(m_CanUsePing == -1) // unknown

    {
    {

-      close(sockfd);
-      return;
+      if(wxFileExists("/bin/ping"))
+         m_PingPath = "/bin/ping";
+      else if(wxFileExists("/usr/sbin/ping"))
+         m_PingPath = "/usr/sbin/ping";
+      if(! m_PingPath)
+      {
+         m_CanUsePing = 0;
+         return -1;
+      }

    }
    }

+
+   wxLogNull ln; // suppress all error messages
+   wxASSERT(m_PingPath.length());
+   wxString cmd;
+   cmd << m_PingPath << ' ';
+#if defined(__SOLARIS__) || defined (__SUNOS__)
+   // nothing to add to ping command
+#elif defined(__LINUX__) || defined ( __FREEBSD__)
+   cmd << "-c 1 "; // only ping once
+#elif defined(__HPUX__)
+   cmd << "64 1 "; // only ping once (need also specify the packet size)
+#else
+#   pragma warning "No Ping information for this OS."
+   m_CanUsePing = 0;
+   return -1;

 #endif
 #endif

-   
-   if( connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0)
-   {
-      //sys_error("cannot connect to server");
-      close(sockfd);
-      return;
-   }
-   //connected!
-   close(sockfd);
-   m_IsOnline = TRUE;
+   cmd << m_BeaconHost;
+   if(wxExecute(cmd, TRUE /* sync */) == 0)
+      return 1;
+   else
+      return 0;

 }
 
 }
 

-

 /* static */
 wxDialUpManager *
 wxDialUpManager::Create(void)
 /* static */
 wxDialUpManager *
 wxDialUpManager::Create(void)