X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9841339c74917270e36def49a00a0415efe3683e..46cd520d1e12e5d2dbe22b46bb2a8b67b808ce42:/src/unix/dialup.cpp diff --git a/src/unix/dialup.cpp b/src/unix/dialup.cpp index 9714ab0ea6..f64e45fd90 100644 --- a/src/unix/dialup.cpp +++ b/src/unix/dialup.cpp @@ -1,4 +1,4 @@ -// -*- c++ -*- /////////////////////////////////////////////////////////////// +// -*- c++ -*- //////////////////////////////////////////////////////////////// // Name: unix/dialup.cpp // Purpose: Network related wxWindows classes and functions // Author: Karsten Ballüder @@ -7,16 +7,16 @@ // RCS-ID: $Id$ // Copyright: (c) Karsten Ballüder // Licence: wxWindows licence -///////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// #include "wx/setup.h" -#if wxUSE_DIALUP_MANAGER - #ifdef __GNUG__ - #pragma implementation "dialup.h" +# pragma implementation "dialup.h" #endif +#if wxUSE_DIALUP_MANAGER + #ifndef WX_PRECOMP # include "wx/defs.h" #endif // !PCH @@ -28,10 +28,11 @@ #include "wx/filefn.h" #include "wx/utils.h" #include "wx/log.h" -#include "wx/file.h" +#include "wx/ffile.h" #include "wx/process.h" #include "wx/intl.h" #include "wx/app.h" +#include "wx/wxchar.h" #include @@ -43,6 +44,7 @@ #include #include #include +#include // ---------------------------------------------------------------------------- // A class which groups functions dealing with connecting to the network from a @@ -72,7 +74,7 @@ class WXDLLEXPORT wxDialUpManagerImpl : public wxDialUpManager public: wxDialUpManagerImpl(); ~wxDialUpManagerImpl(); - + /** Could the dialup manager be initialized correctly? If this function returns FALSE, no other functions will work neither, so it's a good idea to call this function and check its result before calling any other @@ -94,7 +96,7 @@ public: const wxString& WXUNUSED(password), bool async); - /// Hang up the currently active dial up connection. + // Hang up the currently active dial up connection. virtual bool HangUp(); // returns TRUE if the computer is connected to the network: under Windows, @@ -102,27 +104,30 @@ public: // 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 == -1 - ) - CheckStatus(); - return m_IsOnline != 0; + CheckStatus(); + return m_IsOnline == Net_Connected; } - /// returns TRUE if (async) dialing is in progress - inline virtual bool IsDialling() const + // do we have a constant net connection? + virtual bool IsAlwaysOnline() const; + + // returns TRUE if (async) dialing is in progress + virtual bool IsDialing() const { return m_DialProcess != NULL; } // cancel dialing the number initiated with Dial(async = TRUE) // NB: this won't result in DISCONNECTED event being sent virtual bool CancelDialing(); + 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 // algorithm may think about it. virtual void SetOnlineStatus(bool isOnline = TRUE) - { m_IsOnline = isOnline; } + { m_IsOnline = isOnline ? Net_Connected : Net_No; } // set misc wxDialUpManager options // -------------------------------- @@ -151,41 +156,87 @@ public: virtual void SetConnectCommand(const wxString &command, const wxString &hupcmd) { m_ConnectCommand = command; m_HangUpCommand = hupcmd; } +//private: -- Sun CC 4.2 objects to using NetConnection enum as the return +// type if it is declared private + + // the possible results of testing for Online() status + enum NetConnection + { + Net_Unknown = -1, // we couldn't learn anything + Net_No, // no network connection [currently] + Net_Connected // currently connected + }; + + // the possible net connection types + enum NetDeviceType + { + NetDevice_None = 0x0000, // no network devices (authoritative) + NetDevice_Unknown = 0x0001, // test doesn't work on this OS + NetDevice_Modem = 0x0002, // we have a modem + NetDevice_LAN = 0x0004 // a network card + }; + private: - /// -1: don´t know, 0 = no, 1 = yes - int m_IsOnline; + // the current status + NetConnection m_IsOnline; + + // the connection we have with the network card + NetConnection m_connCard; - /// Can we use ifconfig to list active devices? + // Can we use ifconfig to list active devices? int m_CanUseIfconfig; - /// The path to ifconfig + + // The path to ifconfig wxString m_IfconfigPath; - /// beacon host: + // 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 portnumber for connect: int m_BeaconPort; - /// command to connect to network + // command to connect to network wxString m_ConnectCommand; - /// command to hang up + // command to hang up wxString m_HangUpCommand; - /// name of ISP + // name of ISP wxString m_ISPname; - /// a timer for regular testing + // a timer for regular testing class AutoCheckTimer *m_timer; friend class AutoCheckTimer; - /// a wxProcess for dialling in background + // a wxProcess for dialling in background class wxDialProcess *m_DialProcess; - /// pid of dial process + // pid of dial process int m_DialPId; friend class wxDialProcess; - - /// determine status + + // determine status void CheckStatus(bool fromAsync = FALSE) const; - /// real status check - void CheckStatusInternal(void); + // real status check + void CheckStatusInternal(); + + // check /proc/net (Linux only) for ppp/eth interfaces, returns the bit + // mask of NetDeviceType constants + int CheckProcNet(); + + // check output of ifconfig command for PPP/SLIP/PLIP devices, returns the + // bit mask of NetDeviceType constants + int CheckIfconfig(); + + // combines the 2 possible checks for determining the connection status + NetConnection CheckConnectAndPing(); + + // pings a host + NetConnection CheckPing(); + + // check by connecting to host on given port. + NetConnection CheckConnect(); }; @@ -198,11 +249,11 @@ public: 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() - { 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(); } @@ -218,10 +269,14 @@ public: { m_DupMan = dupman; } - void OnTerminate(int WXUNUSED(pid), int WXUNUSED(status)) const + void Disconnect() { m_DupMan = NULL; } + virtual void OnTerminate(int WXUNUSED(pid), int WXUNUSED(status)) { - m_DupMan->m_DialProcess = NULL; - m_DupMan->CheckStatus(TRUE); + if(m_DupMan) + { + m_DupMan->m_DialProcess = NULL; + m_DupMan->CheckStatus(TRUE); + } } private: wxDialUpManagerImpl *m_DupMan; @@ -230,18 +285,37 @@ private: wxDialUpManagerImpl::wxDialUpManagerImpl() { - m_IsOnline = -1; // unknown + m_IsOnline = + m_connCard = Net_Unknown; m_DialProcess = NULL; m_timer = NULL; m_CanUseIfconfig = -1; // unknown + m_CanUsePing = -1; // unknown m_BeaconHost = WXDIALUP_MANAGER_DEFAULT_BEACONHOST; m_BeaconPort = 80; + +#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")); + SetConnectCommand(dial ? wxString(dial) : m_ConnectCommand, + hup ? wxString(hup) : m_HangUpCommand); } wxDialUpManagerImpl::~wxDialUpManagerImpl() { if(m_timer) delete m_timer; - if(m_DialProcess) m_DialProcess->Detach(); + if(m_DialProcess) + { + m_DialProcess->Disconnect(); + m_DialProcess->Detach(); + } } bool @@ -250,12 +324,11 @@ wxDialUpManagerImpl::Dial(const wxString &isp, const wxString & WXUNUSED(password), bool async) { - if(m_IsOnline == 1) + if(m_IsOnline == Net_Connected) return FALSE; - m_IsOnline = -1; 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; @@ -263,7 +336,7 @@ wxDialUpManagerImpl::Dial(const wxString &isp, 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; @@ -277,19 +350,17 @@ wxDialUpManagerImpl::Dial(const wxString &isp, return wxExecute(cmd, /* sync */ TRUE) == 0; } -bool -wxDialUpManagerImpl::HangUp(void) +bool wxDialUpManagerImpl::HangUp() { - if(m_IsOnline == 0) + if(m_IsOnline == Net_No) return FALSE; - if(IsDialling()) + if(IsDialing()) { wxLogError(_("Already dialling ISP.")); return FALSE; } - m_IsOnline = -1; 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; @@ -297,18 +368,16 @@ wxDialUpManagerImpl::HangUp(void) } -bool -wxDialUpManagerImpl::CancelDialing() +bool wxDialUpManagerImpl::CancelDialing() { - if(! IsDialling()) + if(! IsDialing()) return FALSE; return kill(m_DialPId, SIGTERM) > 0; } -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) @@ -319,25 +388,32 @@ wxDialUpManagerImpl::EnableAutoCheckOnlineStatus(size_t nSeconds) return rc; } -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) { - /// does hostname contain a port number? - wxString port = hostname.After(':'); + if(hostname.Length() == 0) + { + m_BeaconHost = WXDIALUP_MANAGER_DEFAULT_BEACONHOST; + m_BeaconPort = 80; + return; + } + + // does hostname contain a port number? + wxString port = hostname.After(wxT(':')); if(port.Length()) { - m_BeaconHost = hostname.Before(':'); - m_BeaconPort = atoi(port); + m_BeaconHost = hostname.Before(wxT(':')); + m_BeaconPort = wxAtoi(port); } else { @@ -347,158 +423,373 @@ wxDialUpManagerImpl::SetWellKnownHost(const wxString& hostname, int portno) } -void -wxDialUpManagerImpl::CheckStatus(bool fromAsync) const +void wxDialUpManagerImpl::CheckStatus(bool fromAsync) const { - // This function calls the CheckStatusInternal() helper function - // which is OS - specific and then sends the events. - - int oldIsOnline = m_IsOnline; - ( /* non-const */ (wxDialUpManagerImpl *)this)->CheckStatusInternal(); - - // now send the events as appropriate: - if(m_IsOnline != oldIsOnline && oldIsOnline != -1) - { - wxDialUpEvent event(m_IsOnline, ! fromAsync); - (void)wxTheApp->ProcessEvent(event); - } + // This function calls the CheckStatusInternal() helper function + // which is OS - specific and then sends the events. + + NetConnection oldIsOnline = m_IsOnline; + ( /* non-const */ (wxDialUpManagerImpl *)this)->CheckStatusInternal(); + + // now send the events as appropriate: i.e. if the status changed and + // if we're in defined state + if(m_IsOnline != oldIsOnline + && m_IsOnline != Net_Unknown + && oldIsOnline != Net_Unknown ) + { + wxDialUpEvent event(m_IsOnline == Net_Connected, ! fromAsync); + (void)wxTheApp->ProcessEvent(event); + } } /* - We have three methods that we can use: + We first try to find out if ppp interface is active. If it is, we assume + that we're online but don't have a permanent connection (this is false if a + networked machine uses modem to connect to somewhere else, but we can't do + anything in this case anyhow). + + If no ppp interface is detected, we check for eth interface. If it is + found, we check that we can, indeed, connect to an Internet host. The logic + here is that connection check should be fast enough in this case and we + don't want to give false positives in a (common) case of a machine on a LAN + which is not connected to the outside. + + If we didn't find either ppp or eth interfaces, we stop here and decide + that we're connected. However, if couldn't check for this, we try to ping a + remote host just in case. - 1. test via /sbin/ifconfig and grep for "sl", "ppp", "pl" - --> should be fast enough for regular polling - 2. test if we can reach the well known beacon host - --> too slow for polling - 3. check /proc/net/dev on linux?? - This method should be preferred, if possible. Need to do more - testing. + NB1: Checking for the interface presence can be done in 2 ways + a) reading /proc/net/dev under Linux + b) spawning ifconfig under any OS + The first method is faster but only works under Linux. + + NB2: pinging, actually, means that we first try to connect "manually" to + a port on remove machine and if it fails, we run ping. */ -void -wxDialUpManagerImpl::CheckStatusInternal(void) +void wxDialUpManagerImpl::CheckStatusInternal() +{ + m_IsOnline = Net_Unknown; + + // first do quick checks to determine what kind of network devices do we + // have + int netDeviceType = CheckProcNet(); + if ( netDeviceType == NetDevice_Unknown ) + { + // nothing found, try ifconfig too + netDeviceType = CheckIfconfig(); + } + + switch ( netDeviceType ) + { + case NetDevice_None: + // no network devices, no connection + m_IsOnline = Net_No; + break; + + case NetDevice_LAN: + // we still do ping to confirm that we're connected but we only do + // it once and hope that the purpose of the network card (i.e. + // whether it used for connecting to the Internet or just to a + // LAN) won't change during the program lifetime + if ( m_connCard == Net_Unknown ) + { + m_connCard = CheckConnectAndPing(); + } + m_IsOnline = m_connCard; + break; + + case NetDevice_Unknown: + // try to ping just in case + m_IsOnline = CheckConnectAndPing(); + break; + + case NetDevice_LAN + NetDevice_Modem: + case NetDevice_Modem: + // assume we're connected + m_IsOnline = Net_Connected; + break; + + default: + wxFAIL_MSG(_T("Unexpected netDeviceType")); + } +} + +bool wxDialUpManagerImpl::IsAlwaysOnline() const { - m_IsOnline = -1; + wxDialUpManagerImpl *self = wxConstCast(this, wxDialUpManagerImpl); + + int netDeviceType = self->CheckProcNet(); + if ( netDeviceType == NetDevice_Unknown ) + { + // nothing found, try ifconfig too + netDeviceType = self->CheckIfconfig(); + } + + if ( netDeviceType == NetDevice_Unknown ) + { + // this is the only thing we can do unfortunately... + self->HangUp(); + return IsOnline(); + } + else + { + // we are only permanently online if we have a network card + return (netDeviceType & NetDevice_LAN) != 0; + } +} - // First time check for ifconfig location. We only use the variant - // which does not take arguments, a la GNU. - if(m_CanUseIfconfig == -1) // unknown +wxDialUpManagerImpl::NetConnection wxDialUpManagerImpl::CheckConnectAndPing() +{ + NetConnection conn; + + // first try connecting - faster + conn = CheckConnect(); + if ( conn == Net_Unknown ) + { + // try pinging too + conn = CheckPing(); + } + + return conn; +} + +wxDialUpManagerImpl::NetConnection wxDialUpManagerImpl::CheckConnect() +{ + // 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 Net_No; // 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) { - if(wxFileExists("/sbin/ifconfig")) - m_IfconfigPath = "/sbin/ifconfig"; - else if(wxFileExists("/usr/sbin/ifconfig")) - m_IfconfigPath = "/usr/sbin/ifconfig"; + return Net_Unknown; // no info } - wxLogNull ln; // suppress all error messages - // Let´s try the ifconfig method first, should be fastest: - if(m_CanUseIfconfig != 0) // unknown or yes + if( connect(sockfd, (struct sockaddr *) &serv_addr, + sizeof(serv_addr)) >= 0) + { + close(sockfd); + return Net_Connected; // we can connect, so we have a network! + } + else // failed to connect { - wxASSERT(m_IfconfigPath.length()); - - wxString tmpfile = wxGetTempFileName("_wxdialuptest"); - wxString cmd = "/bin/sh -c \'"; - cmd << m_IfconfigPath << " >" << 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 - the shell first. I have no idea why. :-( (KB) */ -#if 0 - // temporarily redirect stdout/stderr: - int - new_stdout = dup(STDOUT_FILENO), - new_stderr = dup(STDERR_FILENO); - close(STDOUT_FILENO); - close(STDERR_FILENO); - - int - // new stdout: - output_fd = open(tmpfile, O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR), - // new stderr: - null_fd = open("/dev/null", O_CREAT, S_IRUSR|S_IWUSR); - // verify well behaved unix behaviour: - wxASSERT(output_fd == STDOUT_FILENO); - wxASSERT(null_fd == STDERR_FILENO); - int rc = wxExecute(m_IfconfigPath,TRUE /* sync */,NULL ,wxEXECUTE_DONT_CLOSE_FDS); - close(null_fd); close(output_fd); - // restore old stdout, stderr: - int test; - test = dup(new_stdout); close(new_stdout); wxASSERT(test == STDOUT_FILENO); - test = dup(new_stderr); close(new_stderr); wxASSERT(test == STDERR_FILENO); - if(rc == 0) + if(errno == ENETUNREACH) + return Net_No; // network is unreachable + else + return Net_Unknown; // connect failed, but don't know why + } +} + + +int +wxDialUpManagerImpl::CheckProcNet() +{ + // assume that the test doesn't work + int netDevice = NetDevice_Unknown; + +#ifdef __LINUX__ + if (wxFileExists(_T("/proc/net/route"))) + { + // cannot use wxFile::Length because file doesn't support seeking, so + // use stdio directly + FILE *f = fopen("/proc/net/route", "rt"); + if (f != NULL) + { + // now we know that we will find all devices we may have + netDevice = NetDevice_None; + + char output[256]; + + while (fgets(output, 256, f) != NULL) + { + if ( strstr(output, "eth") ) // network card + { + netDevice |= NetDevice_LAN; + } + else if (strstr(output,"ppp") // ppp + || strstr(output,"sl") // slip + || strstr(output,"pl")) // plip + { + netDevice |= NetDevice_Modem; + } + } + + fclose(f); + } + } +#endif // __LINUX__ + + return netDevice; +} + + +int +wxDialUpManagerImpl::CheckIfconfig() +{ + // assume that the test doesn't work + int netDevice = NetDevice_Unknown; + + // first time check for ifconfig location + 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; + } + } + } + + if ( m_CanUseIfconfig != 0 ) // unknown or yes + { + wxLogNull ln; // suppress all error messages + + wxASSERT_MSG( m_IfconfigPath.length(), + _T("can't use ifconfig if it wasn't found") ); + + wxString tmpfile = wxGetTempFileName("_wxdialuptest"); + wxString cmd = "/bin/sh -c \'"; + 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 - if(wxExecute(cmd,TRUE /* sync */) == 0) - { - m_CanUseIfconfig = 1; - wxFile file; - if( file.Open(tmpfile) ) - { - char *output = new char [file.Length()+1]; - output[file.Length()] = '\0'; - if(file.Read(output,file.Length()) == file.Length()) + 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 + the shell first. I have no idea why. :-( (KB) */ + if ( wxExecute(cmd,TRUE /* sync */) == 0 ) + { + m_CanUseIfconfig = 1; + wxFFile file; + if( file.Open(tmpfile) ) { - if(strstr(output,"ppp") // ppp - || strstr(output,"sl") // slip - || strstr(output,"pl") // plip - ) - m_IsOnline = 1; - else - m_IsOnline = 0; + wxString output; + if ( file.ReadAll(&output) ) + { + // FIXME shouldn't we grep for "^ppp"? (VZ) + + bool hasModem = FALSE, + hasLAN = FALSE; + +#if defined(__SOLARIS__) || defined (__SUNOS__) + // dialup device under SunOS/Solaris + hasModem = strstr(output,"ipdptp") != (char *)NULL; + hasLAN = strstr(output, "hme") != (char *)NULL; +#elif defined(__LINUX__) || defined (__FREEBSD__) + hasModem = strstr(output,"ppp") // ppp + || strstr(output,"sl") // slip + || strstr(output,"pl"); // plip + hasLAN = strstr(output, "eth") != NULL; +#elif defined(__SGI__) // IRIX + hasModem = strstr(output, "ppp") != NULL; // PPP +#elif defined(__HPUX__) + // if could run ifconfig on interface, then it exists + hasModem = TRUE; +#endif + + netDevice = NetDevice_None; + if ( hasModem ) + netDevice |= NetDevice_Modem; + if ( hasLAN ) + netDevice |= NetDevice_LAN; + } + //else: error reading the file } - file.Close(); - delete [] output; - } - // else m_IsOnline remains -1 as we don't know for sure + //else: error opening the file + } + else // could not run ifconfig correctly + { + m_CanUseIfconfig = 0; // don´t try again + } + + (void) wxRemoveFile(tmpfile); + } + + return netDevice; +} + +wxDialUpManagerImpl::NetConnection wxDialUpManagerImpl::CheckPing() +{ + // First time check for ping location. We only use the variant + // which does not take arguments, a la GNU. + if(m_CanUsePing == -1) // unknown + { + 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; } - else // could not run ifconfig correctly - m_CanUseIfconfig = 0; // don´t try again - (void) wxRemoveFile(tmpfile); - if(m_IsOnline != -1) // we are done - return; } - // second method: try to connect to well known host: - // This can be used under Win 9x, too! - struct hostent *hp; - struct sockaddr_in serv_addr; - int sockfd; - - 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); - if( ( sockfd = socket(hp->h_addrtype, SOCK_STREAM, 0)) < 0) - { - // sys_error("cannot create socket for gw"); - return; + if(! m_CanUsePing) + { + // we didn't find ping + return Net_Unknown; } -#if 0 - // PING method: - if(sendto(sockfd, "hello", strlen("hello"), /* flags */ 0, &serv_addr, - sizeof(serv_addr)) == -1) - return; + 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 Net_Unknown; #endif - - if( connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) - { - //sys_error("cannot connect to server"); - return; - } - //connected! - close(sockfd); - m_IsOnline = TRUE; + cmd << m_BeaconHost; + if(wxExecute(cmd, TRUE /* sync */) == 0) + return Net_Connected; + else + return Net_No; } - /* static */ -wxDialUpManager * -wxDialUpManager::Create(void) +wxDialUpManager *wxDialUpManager::Create() { return new wxDialUpManagerImpl; }