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 = INVALID_HANDLE_VALUE;
  12     HANDLE hOutWrite = INVALID_HANDLE_VALUE;
  13     HANDLE hErrWrite = INVALID_HANDLE_VALUE;
  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         hInRead = INVALID_HANDLE_VALUE;
  24         goto error;
  25     }
  26
  27     // create STDOUT pipe
  28     if( !CreatePipe( phOutRead, &hOutWrite, &sa, 0 )) {
  29         hOutWrite = INVALID_HANDLE_VALUE;
  30         goto error;
  31     }
  32
  33     // create STDERR pipe
  34     if( !CreatePipe( phErrRead, &hErrWrite, &sa, 0 )) {
  35         hErrWrite = INVALID_HANDLE_VALUE;
  36         goto error;
  37     }
  38
  39     // process startup information
  40     memset( &si, 0, sizeof( si ));
  41     si.cb = sizeof( si );
  42     si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
  43     // child process' console must be hidden for Win95 compatibility
  44     si.wShowWindow = SW_HIDE;
  45     // assign "other" sides of pipes
  46     si.hStdInput = hInRead;
  47     si.hStdOutput = hOutWrite;
  48     si.hStdError = hErrWrite;
  49
  50     // Create a child process (suspended)
  51     fCreated = CreateProcess( NULL,
  52                               (LPTSTR)szChildName,
  53                               NULL,
  54                               NULL,
  55                               TRUE,
  56                               0,
  57                               NULL,
  58                               NULL,
  59                               &si,
  60                               ppi );
  61
  62     if( !fCreated )
  63         goto error;
  64
  65     CloseHandle( hInRead );
  66     CloseHandle( hOutWrite );
  67     CloseHandle( hErrWrite );
  68
  69     return TRUE;
  70
  71 error:
  72     if (hInRead != INVALID_HANDLE_VALUE) CloseHandle( hInRead );
  73     if (hOutWrite != INVALID_HANDLE_VALUE) CloseHandle( hOutWrite );
  74     if (hErrWrite != INVALID_HANDLE_VALUE) CloseHandle( hErrWrite );
  75     CloseHandle( ppi->hProcess );
  76     CloseHandle( ppi->hThread );
  77
  78     hInRead =
  79     hOutWrite =
  80     hErrWrite =
  81     ppi->hProcess =
  82     ppi->hThread = INVALID_HANDLE_VALUE;
  83
  84     return FALSE;
  85 }
  86
  87 BOOL SpawnProcess(char *cmd_line, PROCESS_INFORMATION *pi) {
  88         STARTUPINFO si;
  89
  90         memset(&si, 0, sizeof(si));
  91         si.cb = sizeof(si);
  92
  93         return CreateProcess(cmd_line, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS,
  94                              CREATE_NEW_CONSOLE, NULL, NULL, &si, pi);
  95 }
  96
  97 // crn@ozemail.com.au
  98 int GetWin32Version(void) {
  99         // return win32 version; 0 = Win32s, 1 = Win95, 2 = WinNT, 3 = Unknown -crn@ozemail.com.au
 100         LPOSVERSIONINFO osv;
 101         DWORD retval;
 102
 103         osv = new OSVERSIONINFO;
 104
 105         osv->dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
 106         GetVersionEx (osv);
 107         retval = osv->dwPlatformId;
 108         delete osv;
 109         return (retval);
 110 }
 111
 112 // Paul Brannan 8/7/98
 113 // This code is from Michael 'Hacker' Krelin (author of KINSole)
 114 // (slightly modified)
 115 HWND TelnetGetConsoleWindow() {
 116         DWORD pid = GetCurrentProcessId(), wpid;
 117         char title[512], *t = title;
 118         HWND hrv = NULL;
 119
 120 #ifndef __BORLANDC__    // Ioannou Dec. 8, 1998
 121         if(!GetConsoleTitle(title, sizeof(title))) t = NULL;
 122
 123         for(;;) {
 124                 if((hrv = FindWindowEx(NULL, hrv, "tty", t)) == NULL) break;
 125                 if(!GetWindowThreadProcessId(hrv, &wpid)) continue;
 126                 if(wpid == pid) return hrv;
 127         }
 128 #endif
 129
 130         return GetForegroundWindow();
 131 }
 132
 133 // Sets the icon of the console window to hIcon
 134 // If hIcon is 0, then use a default icon
 135 // hConsoleWindow must be set before calling SetIcon
 136 bool SetIcon(HWND hConsoleWindow, HANDLE hIcon, LPARAM *pOldBIcon, LPARAM *pOldSIcon,
 137                          const char *icondir) {
 138         if(!hConsoleWindow) return false;
 139
 140 // FIX ME!!! The LoadIcon code should work with any compiler!
 141 // (Paul Brannan 12/17/98)
 142 #ifndef __BORLANDC__ // Ioannou Dec. 8, 1998
 143         if(!hIcon) {
 144                 char filename[MAX_PATH];                                        // load from telnet.ico
 145                 _snprintf(filename, MAX_PATH - 1, "%s%s", icondir, "telnet.ico");
 146                 filename[MAX_PATH - 1] = '\0';
 147
 148                 // Note: loading the icon from a file doesn't work on NT
 149                 // There is no LoadImage in Borland headers - only LoadIcon
 150                 hIcon = LoadImage(NULL, filename, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE +
 151                         LR_LOADFROMFILE);
 152         }
 153 #else
 154         // load the icon from the resource file -crn@ozemail.com.au 16/12/98
 155         if(!hIcon) {
 156                 hIcon = LoadIcon ((HANDLE)GetWindowLongPtr(hConsoleWindow,
 157                         GWL_HINSTANCE), "TELNETICON");
 158         }
 159 #endif
 160
 161         if(hIcon) {
 162 #ifdef ICON_BIG
 163                 *pOldBIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG,
 164                         (LPARAM)hIcon);
 165 #endif
 166 #ifdef ICON_SMALL
 167                 *pOldSIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL,
 168                         (LPARAM)hIcon);
 169 #endif
 170                 return true;
 171         } else {
 172                 // Otherwise we get a random icon at exit! (Paul Brannan 9/13/98)
 173                 return false;
 174         }
 175 }
 176
 177 // Allows SetIcon to be called again by resetting the current icon
 178 // Added 12/17/98 by Paul Brannan
 179 void ResetIcon(HWND hConsoleWindow, LPARAM oldBIcon, LPARAM oldSIcon) {
 180 #ifdef ICON_BIG
 181         SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG, (LPARAM)oldBIcon);
 182 #endif
 183 #ifdef ICON_SMALL
 184         SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL, (LPARAM)oldSIcon);
 185 #endif
 186 }