base/applications/network/telnet/src/tnmisc.cpp

   1 #include "precomp.h"
   2
   3 // from the PVAX (http://www.ccas.ru/~posp/popov/spawn.htm)
   4 // Create a process with pipes to stdin/out/err
   5 BOOL CreateHiddenConsoleProcess(LPCTSTR szChildName, PROCESS_INFORMATION* ppi,
   6                                 LPHANDLE phInWrite, LPHANDLE phOutRead,
   7                                 LPHANDLE phErrRead) {
   8     BOOL fCreated;
   9     STARTUPINFO si;
  10     SECURITY_ATTRIBUTES sa;
  11     HANDLE hInRead;
  12     HANDLE hOutWrite;
  13     HANDLE hErrWrite;
  14
  15     // Create pipes
  16     // initialize security attributes for handle inheritance (for WinNT)
  17     sa.nLength = sizeof( sa );
  18     sa.bInheritHandle = TRUE;
  19     sa.lpSecurityDescriptor  = NULL;
  20
  21     // create STDIN pipe
  22     if( !CreatePipe( &hInRead, phInWrite, &sa, 0 ))
  23         goto error;
  24
  25     // create STDOUT pipe
  26     if( !CreatePipe( phOutRead, &hOutWrite, &sa, 0 ))
  27         goto error;
  28
  29     // create STDERR pipe
  30     if( !CreatePipe( phErrRead, &hErrWrite, &sa, 0 ))
  31         goto error;
  32
  33     // process startup information
  34     memset( &si, 0, sizeof( si ));
  35     si.cb = sizeof( si );
  36     si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
  37     // child process' console must be hidden for Win95 compatibility
  38     si.wShowWindow = SW_HIDE;
  39     // assign "other" sides of pipes
  40     si.hStdInput = hInRead;
  41     si.hStdOutput = hOutWrite;
  42     si.hStdError = hErrWrite;
  43
  44     // Create a child process (suspended)
  45     fCreated = CreateProcess( NULL,
  46                               (LPTSTR)szChildName,
  47                               NULL,
  48                               NULL,
  49                               TRUE,
  50                               0,
  51                               NULL,
  52                               NULL,
  53                               &si,
  54                               ppi );
  55
  56     if( !fCreated )
  57         goto error;
  58
  59     CloseHandle( hInRead );
  60     CloseHandle( hOutWrite );
  61     CloseHandle( hErrWrite );
  62
  63     return TRUE;
  64
  65 error:
  66     CloseHandle( hInRead );
  67     CloseHandle( hOutWrite );
  68     CloseHandle( hErrWrite );
  69     CloseHandle( ppi->hProcess );
  70     CloseHandle( ppi->hThread );
  71
  72     hInRead =
  73     hOutWrite =
  74     hErrWrite =
  75     ppi->hProcess =
  76     ppi->hThread = INVALID_HANDLE_VALUE;
  77
  78     return FALSE;
  79 }
  80
  81 BOOL SpawnProcess(char *cmd_line, PROCESS_INFORMATION *pi) {
  82         STARTUPINFO si;
  83
  84         memset(&si, 0, sizeof(si));
  85         si.cb = sizeof(si);
  86
  87         return CreateProcess(cmd_line, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS,
  88                              CREATE_NEW_CONSOLE, NULL, NULL, &si, pi);
  89 }
  90
  91 // crn@ozemail.com.au
  92 int GetWin32Version(void) {
  93         // return win32 version; 0 = Win32s, 1 = Win95, 2 = WinNT, 3 = Unknown -crn@ozemail.com.au
  94         LPOSVERSIONINFO osv;
  95         DWORD retval;
  96
  97         osv = new OSVERSIONINFO;
  98
  99         osv->dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
 100         GetVersionEx (osv);
 101         retval = osv->dwPlatformId;
 102         delete osv;
 103         return (retval);
 104 }
 105
 106 // Paul Brannan 8/7/98
 107 // This code is from Michael 'Hacker' Krelin (author of KINSole)
 108 // (slightly modified)
 109 HWND TelnetGetConsoleWindow() {
 110         DWORD pid = GetCurrentProcessId(), wpid;
 111         char title[512], *t = title;
 112         HWND hrv = NULL;
 113
 114 #ifndef __BORLANDC__    // Ioannou Dec. 8, 1998
 115         if(!GetConsoleTitle(title, sizeof(title))) t = NULL;
 116
 117         for(;;) {
 118                 if((hrv = FindWindowEx(NULL, hrv, "tty", t)) == NULL) break;
 119                 if(!GetWindowThreadProcessId(hrv, &wpid)) continue;
 120                 if(wpid == pid) return hrv;
 121         }
 122 #endif
 123
 124         return GetForegroundWindow();
 125 }
 126
 127 // Sets the icon of the console window to hIcon
 128 // If hIcon is 0, then use a default icon
 129 // hConsoleWindow must be set before calling SetIcon
 130 bool SetIcon(HWND hConsoleWindow, HANDLE hIcon, LPARAM *pOldBIcon, LPARAM *pOldSIcon,
 131                          const char *icondir) {
 132         if(!hConsoleWindow) return false;
 133
 134 // FIX ME!!! The LoadIcon code should work with any compiler!
 135 // (Paul Brannan 12/17/98)
 136 #ifndef __BORLANDC__ // Ioannou Dec. 8, 1998
 137         if(!hIcon) {
 138                 char filename[MAX_PATH];                                        // load from telnet.ico
 139                 _snprintf(filename, MAX_PATH - 1, "%s%s", icondir, "telnet.ico");
 140                 filename[MAX_PATH - 1] = '\0';
 141
 142                 // Note: loading the icon from a file doesn't work on NT
 143                 // There is no LoadImage in Borland headers - only LoadIcon
 144                 hIcon = LoadImage(NULL, filename, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE +
 145                         LR_LOADFROMFILE);
 146         }
 147 #else
 148         // load the icon from the resource file -crn@ozemail.com.au 16/12/98
 149         if(!hIcon) {
 150                 hIcon = LoadIcon ((HANDLE)GetWindowLongPtr(hConsoleWindow,
 151                         GWL_HINSTANCE), "TELNETICON");
 152         }
 153 #endif
 154
 155         if(hIcon) {
 156 #ifdef ICON_BIG
 157                 *pOldBIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG,
 158                         (LPARAM)hIcon);
 159 #endif
 160 #ifdef ICON_SMALL
 161                 *pOldSIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL,
 162                         (LPARAM)hIcon);
 163 #endif
 164                 return true;
 165         } else {
 166                 // Otherwise we get a random icon at exit! (Paul Brannan 9/13/98)
 167                 return false;
 168         }
 169 }
 170
 171 // Allows SetIcon to be called again by resetting the current icon
 172 // Added 12/17/98 by Paul Brannan
 173 void ResetIcon(HWND hConsoleWindow, LPARAM oldBIcon, LPARAM oldSIcon) {
 174 #ifdef ICON_BIG
 175         SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG, (LPARAM)oldBIcon);
 176 #endif
 177 #ifdef ICON_SMALL
 178         SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL, (LPARAM)oldSIcon);
 179 #endif
 180 }