tnmisc.cpp

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#include "precomp.h"
 
// from the PVAX (http://www.ccas.ru/~posp/popov/spawn.htm)
// Create a process with pipes to stdin/out/err
BOOL CreateHiddenConsoleProcess(LPCTSTR szChildName, PROCESS_INFORMATION* ppi,
                                LPHANDLE phInWrite, LPHANDLE phOutRead,
                                LPHANDLE phErrRead) {
    BOOL fCreated;
    STARTUPINFO si;
    SECURITY_ATTRIBUTES sa;
    HANDLE hInRead = INVALID_HANDLE_VALUE;
    HANDLE hOutWrite = INVALID_HANDLE_VALUE;
    HANDLE hErrWrite = INVALID_HANDLE_VALUE;
 
    // Create pipes
    // initialize security attributes for handle inheritance (for WinNT)
    sa.nLength = sizeof( sa );
    sa.bInheritHandle = TRUE;
    sa.lpSecurityDescriptor  = NULL;
 
    // create STDIN pipe
    if( !CreatePipe( &hInRead, phInWrite, &sa, 0 )) {
        hInRead = INVALID_HANDLE_VALUE;
        goto error;
    }
 
    // create STDOUT pipe
    if( !CreatePipe( phOutRead, &hOutWrite, &sa, 0 )) {
        hOutWrite = INVALID_HANDLE_VALUE;
        goto error;
    }
 
    // create STDERR pipe
    if( !CreatePipe( phErrRead, &hErrWrite, &sa, 0 )) {
        hErrWrite = INVALID_HANDLE_VALUE;
        goto error;
    }
 
    // process startup information
    memset( &si, 0, sizeof( si ));
    si.cb = sizeof( si );
    si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
    // child process' console must be hidden for Win95 compatibility
    si.wShowWindow = SW_HIDE;
    // assign "other" sides of pipes
    si.hStdInput = hInRead;
    si.hStdOutput = hOutWrite;
    si.hStdError = hErrWrite;
 
    // Create a child process (suspended)
    fCreated = CreateProcess( NULL,
                              (LPTSTR)szChildName,
                              NULL,
                              NULL,
                              TRUE,
                              0,
                              NULL,
                              NULL,
                              &si,
                              ppi );
 
    if( !fCreated )
        goto error;
 
    CloseHandle( hInRead );
    CloseHandle( hOutWrite );
    CloseHandle( hErrWrite );
 
    return TRUE;
 
error:
    if (hInRead != INVALID_HANDLE_VALUE) CloseHandle( hInRead );
    if (hOutWrite != INVALID_HANDLE_VALUE) CloseHandle( hOutWrite );
    if (hErrWrite != INVALID_HANDLE_VALUE) CloseHandle( hErrWrite );
    CloseHandle( ppi->hProcess );
    CloseHandle( ppi->hThread );
 
    hInRead =
    hOutWrite =
    hErrWrite =
    ppi->hProcess =
    ppi->hThread = INVALID_HANDLE_VALUE;
 
    return FALSE;
}
 
BOOL SpawnProcess(char *cmd_line, PROCESS_INFORMATION *pi) {
    STARTUPINFO si;
 
    memset(&si, 0, sizeof(si));
    si.cb = sizeof(si);
 
    return CreateProcess(cmd_line, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS,
                         CREATE_NEW_CONSOLE, NULL, NULL, &si, pi);
}
 
// crn@ozemail.com.au
int GetWin32Version(void) {
    // return win32 version; 0 = Win32s, 1 = Win95, 2 = WinNT, 3 = Unknown -crn@ozemail.com.au
    LPOSVERSIONINFO osv;
    DWORD retval;
 
    osv = new OSVERSIONINFO;
 
    osv->dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
    GetVersionEx (osv);
    retval = osv->dwPlatformId;
    delete osv;
    return (retval);
}
 
// Paul Brannan 8/7/98
// This code is from Michael 'Hacker' Krelin (author of KINSole)
// (slightly modified)
HWND TelnetGetConsoleWindow() {
    DWORD pid = GetCurrentProcessId(), wpid;
    char title[512], *t = title;
    HWND hrv = NULL;
 
#ifndef __BORLANDC__    // Ioannou Dec. 8, 1998
    if(!GetConsoleTitle(title, sizeof(title))) t = NULL;
 
    for(;;) {
        if((hrv = FindWindowEx(NULL, hrv, "tty", t)) == NULL) break;
        if(!GetWindowThreadProcessId(hrv, &wpid)) continue;
        if(wpid == pid) return hrv;
    }
#endif
 
    return GetForegroundWindow();
}
 
// Sets the icon of the console window to hIcon
// If hIcon is 0, then use a default icon
// hConsoleWindow must be set before calling SetIcon
bool SetIcon(HWND hConsoleWindow, HANDLE hIcon, LPARAM *pOldBIcon, LPARAM *pOldSIcon,
             const char *icondir) {
    if(!hConsoleWindow) return false;
 
// FIX ME!!! The LoadIcon code should work with any compiler!
// (Paul Brannan 12/17/98)
#ifndef __BORLANDC__ // Ioannou Dec. 8, 1998
    if(!hIcon) {
        char filename[MAX_PATH];                    // load from telnet.ico
        _snprintf(filename, MAX_PATH - 1, "%s%s", icondir, "telnet.ico");
        filename[MAX_PATH - 1] = '\0';
 
        // Note: loading the icon from a file doesn't work on NT
        // There is no LoadImage in Borland headers - only LoadIcon
        hIcon = LoadImage(NULL, filename, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE +
            LR_LOADFROMFILE);
    }
#else
    // load the icon from the resource file -crn@ozemail.com.au 16/12/98
    if(!hIcon) {
        hIcon = LoadIcon((HANDLE)GetWindowLongPtr(hConsoleWindow,
            GWLP_HINSTANCE), "TELNETICON");
    }
#endif
 
    if(hIcon) {
#ifdef ICON_BIG
        *pOldBIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG,
            (LPARAM)hIcon);
#endif
#ifdef ICON_SMALL
        *pOldSIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL,
            (LPARAM)hIcon);
#endif
        return true;
    } else {
        // Otherwise we get a random icon at exit! (Paul Brannan 9/13/98)
        return false;
    }
}
 
// Allows SetIcon to be called again by resetting the current icon
// Added 12/17/98 by Paul Brannan
void ResetIcon(HWND hConsoleWindow, LPARAM oldBIcon, LPARAM oldSIcon) {
#ifdef ICON_BIG
    SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG, (LPARAM)oldBIcon);
#endif
#ifdef ICON_SMALL
    SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL, (LPARAM)oldSIcon);
#endif
}