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win32.c

/*
* Copyright (c) 1996 The Regents of the University of California.
* All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*     This product includes software developed by the Network Research
*     Group at Lawrence Berkeley National Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
*    to endorse or promote products derived from this software without
*    specific prior written permission.
* 
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This module contributed by John Brezak <brezak@apollo.hp.com>.
* January 31, 1996
*/
#ifndef lint
static char rcsid[] =
"@(#) $Header: /cs/research/mice/starship/src/local/CVS_repository/vic/win32/win32.c,v 1.3 2000/03/09 17:01:26 piers Exp $ (LBL)";
#endif

#include "config.h"

#include <assert.h>
#include <io.h>
#include <process.h>
#include <fcntl.h>
#include <windows.h>
#include <malloc.h>
#include <string.h>
#include <stdio.h>
#include <time.h>
//#include <winsock.h>
#include <tcl8.4/tcl.h>
#include <tcl8.4/tk.h>

int
uname(struct utsname *ub)
{
    char *ptr;
    DWORD version;
    SYSTEM_INFO sysinfo;
    char hostname[4096];
    
    version = GetVersion();
    GetSystemInfo(&sysinfo);
    
    switch (sysinfo.wProcessorArchitecture) {
    case PROCESSOR_ARCHITECTURE_INTEL:
            (void)strcpy(ub->machine, "ix86");
            break;
    case PROCESSOR_ARCHITECTURE_MIPS :
            (void)strcpy(ub->machine, "mips");
            break;
    case PROCESSOR_ARCHITECTURE_ALPHA:
            (void)strcpy(ub->machine, "alpha");
            break;
    case PROCESSOR_ARCHITECTURE_PPC:
            (void)strcpy(ub->machine, "ppc");
            break;
    default:
            (void)strcpy(ub->machine, "unknown");
            break;
    }
    
    if (version < 0x80000000) {
            (void)strcpy(ub->version, "NT");
    }
    else if (LOBYTE(LOWORD(version))<4) {
            (void)strcpy(ub->version, "Win32s");
    }
    else                      /* Win95 */ {
            (void)strcpy(ub->version, "Win95");
    }
    (void)sprintf(ub->release, "%u.%u",
            (DWORD)(LOBYTE(LOWORD(version))),
            (DWORD)(HIBYTE(LOWORD(version))));
    (void)strcpy(ub->sysname, "Windows");
    if (gethostname(hostname, sizeof(hostname)) == 0) {
            if (ptr = strchr(hostname, '.'))
                  *ptr = '\0';
    }
    else {
            perror("uname: gethostname failed");
            strcpy(hostname, "FAILURE");
    }
    strncpy(ub->nodename, hostname, sizeof(ub->nodename));
    ub->nodename[_SYS_NMLN - 1] = '\0';
    return 0;
}

int gettimeofday(struct timeval *p, struct timezone *z)
{
    if (p) {
            extern void TclpGetTime(Tcl_Time*);
            Tcl_Time tt;
            
            TclpGetTime(&tt);
        p->tv_sec = tt.sec;
            p->tv_usec = tt.usec;
    }
    if (z) {
            TIME_ZONE_INFORMATION tz;
            GetTimeZoneInformation(&tz);
            z->tz_minuteswest = tz.Bias ;
            z->tz_dsttime = tz.StandardBias != tz.Bias;
    }
    return 0;
}

int
strcasecmp(const char *s1, const char *s2)
{
    return stricmp(s1, s2);
}

uid_t
getuid(void) 
{ 
    return 0;
    
}

gid_t
getgid(void)
{
    return 0;
}

int
gethostid(void)
{
    /*XXX*/
    return 0;
}

int
nice(int pri)
{
    return 0;
}

extern void TkWinXInit(HINSTANCE hInstance);
extern int main(int argc, const char *argv[]);
extern int __argc;
extern char **__argv;

static char argv0[255];       /* Buffer used to hold argv0. */

char *__progname = "main";

int APIENTRY
WinMain(
            HINSTANCE hInstance,
            HINSTANCE hPrevInstance,
            LPSTR lpszCmdLine,
            int nCmdShow)
{
    char *p;
    WSADATA WSAdata;
      
    /* XXX
      * initialize our socket interface plus the tcl 7.5 socket
      * interface (since they redefine some routines we call).
      * eventually we should just call the tcl sockets but at
      * the moment that's hard to set up since they only support
      * tcp in the notifier.
      */
    if (WSAStartup(MAKEWORD (1, 1), &WSAdata)) {
            perror("Windows Sockets init failed");
            abort();
    }
    TclHasSockets(NULL);
      
    TkWinXInit(hInstance);
      
    /*
      * Increase the application queue size from default value of 8.
      * At the default value, cross application SendMessage of WM_KILLFOCUS
      * will fail because the handler will not be able to do a PostMessage!
      * This is only needed for Windows 3.x, since NT dynamically expands
      * the queue.
      */
    SetMessageQueue(64);
      
    GetModuleFileName(NULL, argv0, 255);
    p = argv0;
    __progname = strrchr(p, '/');
    if (__progname != NULL) {
            __progname++;
    }
    else {
            __progname = strrchr(p, '\\');
            if (__progname != NULL) {
                  __progname++;
            } else {
                  __progname = p;
            }
    }
    
    return main(__argc, (const char**)__argv);
}

void
ShowMessage(int level, char *msg)
{
    MessageBeep(level);
    MessageBox(NULL, msg, __progname,
             level | MB_OK | MB_TASKMODAL | MB_SETFOREGROUND);
}

static char szTemp[4096];

int
printf(const char *fmt, ...)
{
    int retval;
    
    va_list ap;
    va_start (ap, fmt);
    retval = vsprintf(szTemp, fmt, ap);
    OutputDebugString(szTemp);
    ShowMessage(MB_ICONINFORMATION, szTemp);
    va_end (ap);
      
    return(retval);
}


int
fprintf(FILE *f, const char *fmt, ...)
{
int retval;

  va_list ap;
  va_start (ap, fmt);
  if (f == stderr) {
  retval = vsprintf(szTemp, fmt, ap);
  OutputDebugString(szTemp);
  ShowMessage(MB_ICONERROR, szTemp);
  va_end (ap);
  }
  else
  retval = vfprintf(f, fmt, ap);
  
    return(retval);
}

void
perror(const char *msg)
{
    DWORD cMsgLen;
    CHAR *msgBuf;
    DWORD dwError = GetLastError();
    
    cMsgLen = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
            FORMAT_MESSAGE_ALLOCATE_BUFFER | 40, NULL,
            dwError,
            MAKELANGID(0, SUBLANG_ENGLISH_US),
            (LPTSTR) &msgBuf, 512,
            NULL);
    if (!cMsgLen) {
            debug_msg("%s%sError code %lu\n", msg?msg:"", msg?": ":"", dwError);
            fprintf(stderr, "%s%sError code %lu\n",
            msg?msg:"", msg?": ":"", dwError);
      } else {
            debug_msg("%s%s%s\n", msg?msg:"", msg?": ":"", msgBuf);
            fprintf(stderr, "%s%s%s\n", msg?msg:"", msg?": ":"", msgBuf);
            LocalFree((HLOCAL)msgBuf);
    }
}
/* Taken from Tcl_PutsObjCmd(); It outputs to stdout or stderr only
 * if a file arg is supplied it [used to] does nothing - ie empty file!
 * Now works with other files.
 */
int
WinPutsCmd(ClientData clientData, Tcl_Interp *interp, int argc, char **argv)
{
    int i, newline, length;
    char *fileId;
    int mode;                       /* Mode in which channel is opened. */
    //Tcl_Obj *resultPtr;
    Tcl_Channel chan;               /* The channel to puts on. */
    int result;                     /* Result of puts operation. */
      
    i = 1;
    newline = 1;
    if ((argc >= 2) && (strcmp(argv[1], "-nonewline") == 0)) {
            newline = 0;
            i++;
    }
    if ((i < (argc-3)) || (i >= argc)) {
            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
                  " ?-nonewline? ?fileId? string\"", (char *) NULL);
            return TCL_ERROR;
    }
      
    /*
      * The code below provides backwards compatibility with an old
      * form of the command that is no longer recommended or documented.
      */
      
    if (i == (argc-3)) {
            if (strncmp(argv[i+2], "nonewline", strlen(argv[i+2])) != 0) {
                  Tcl_AppendResult(interp, "bad argument \"", argv[i+2],
                        "\": should be \"nonewline\"", (char *) NULL);
                  return TCL_ERROR;
            }
            newline = 0;
    }
      
    if (i == (argc-1)) {
            fileId = "stdout";
    } else {
            fileId = argv[i];
            i++;
    }
      
      
    if (strcmp(fileId, "stdout") == 0 || strcmp(fileId, "stderr") == 0) {
            char *buffer;
            
            if (newline) {
                  int len = strlen(argv[i]);
                  buffer = ckalloc(len+2);
                  memcpy(buffer, argv[i], len);
                  buffer[len] = '\n';
                  buffer[len+1] = 0;
            } else {
                  buffer = argv[i];
            }
            OutputDebugString(buffer);
            if (newline)
                  ckfree(buffer);
    } else {

            chan = Tcl_GetChannel(interp, fileId, &mode);
            if (chan == (Tcl_Channel) NULL) {
                  Tcl_AppendResult(interp, "bad argument \"", fileId,
                        "\": Non-existent File Handle ", (char *) NULL);
                  debug_msg("Err:Non-existent File Handle\n");
                  return TCL_ERROR;
            }
            if ((mode & TCL_WRITABLE) == 0) {
                  Tcl_AppendResult(interp, "channel \"", fileId,
                "\" wasn't opened for writing", (char *) NULL);
                  debug_msg("Err:TCL_WRITABLE\n");
                  return TCL_ERROR;
            }
            
            length = strlen(argv[i]);
            result = Tcl_Write(chan, argv[i], length);
            if (result < 0) {
                  goto error;
            }
            if (newline != 0) {
                  result = Tcl_Write(chan, "\n", 1);
                  if (result < 0) {
                        goto error;
                  }
            }
            return TCL_OK;
error:
            debug_msg("Err:puts in Tcl_Write\n");
            Tcl_AppendResult(interp, "error writing \"",
                  Tcl_GetChannelName(chan), "\": ", Tcl_PosixError(interp),
                  (char *) NULL);
            return TCL_ERROR;
      }
    return TCL_OK;
}

int
WinGetUserName(clientData, interp, argc, argv)
ClientData clientData;
Tcl_Interp *interp;                 /* Current interpreter. */
int argc;                     /* Number of arguments. */
char **argv;                  /* Argument strings. */
{
    char user[256];
    int size = sizeof(user);
    
    if (!GetUserName(user, &size)) {
            Tcl_AppendResult(interp, "GetUserName failed", NULL);
            return TCL_ERROR;
    }
    Tcl_AppendResult(interp, user, NULL);
    return TCL_OK;
}

static HKEY
regroot(root)
char *root;
{
    if (strcasecmp(root, "HKEY_LOCAL_MACHINE") == 0)
            return HKEY_LOCAL_MACHINE;
    else if (strcasecmp(root, "HKEY_CURRENT_USER") == 0)
            return HKEY_CURRENT_USER;
    else if (strcasecmp(root, "HKEY_USERS") == 0)
            return HKEY_USERS;
    else if (strcasecmp(root, "HKEY_CLASSES_ROOT") == 0)
            return HKEY_CLASSES_ROOT;
    else
            return NULL;
}


int 
WinReg(ClientData clientdata, Tcl_Interp *interp, int argc, char **argv)
{
      static char szBuf[255], szOutBuf[255];
      char *szRegRoot = NULL, *szRegPath = NULL, *szValueName;
      int cbOutBuf = 255;
      HKEY hKey, hKeyResult;
      DWORD dwDisp;
      
      if (argc < 4 || argc > 5) {
            Tcl_AppendResult(interp, "wrong number of args\n", szBuf, NULL);
            return TCL_ERROR;
      }
      
      strcpy(szBuf, argv[2]);
      szValueName = argv[3];
      szRegRoot   = szBuf;
      szRegPath   = strchr(szBuf, '\\');
      
      if (szRegPath == NULL || szValueName == NULL) {
            Tcl_AppendResult(interp, "registry path is wrongly written\n", szBuf, NULL);
            return TCL_ERROR;
      }
      
      *szRegPath = '\x0';
      szRegPath++;
      
      hKey = regroot(szRegRoot);
      
      if (hKey == (HKEY)-1) {
            Tcl_AppendResult(interp, "root not found %s", szRegRoot, NULL);
            return TCL_ERROR;
      }
      
      if (ERROR_SUCCESS != RegCreateKeyEx(hKey, szRegPath, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hKeyResult, &dwDisp)) {
            Tcl_AppendResult(interp, "Could not open key", szRegRoot, szRegPath, NULL);
            return TCL_ERROR;
      }
      
      if (argc == 4 && !strcmp(argv[1],"get")) {
            DWORD dwType = REG_SZ;
            if (ERROR_SUCCESS != RegQueryValueEx(hKeyResult, szValueName, 0, &dwType, szOutBuf, &cbOutBuf)) {
                  RegCloseKey(hKeyResult);
                  Tcl_AppendResult(interp, "Could not set value", szValueName, NULL);
                  return TCL_ERROR;       
            }
            Tcl_SetResult(interp, szOutBuf, TCL_STATIC);    
      } else if (argc == 5 && !strcmp(argv[1], "set")) {
            if (ERROR_SUCCESS != RegSetValueEx(hKeyResult, szValueName, 0, REG_SZ, argv[4], strlen(argv[4]))) {
                  RegCloseKey(hKeyResult);
                  Tcl_AppendResult(interp, "Could not set value", szValueName, argv[4], NULL);
                  return TCL_ERROR;
            }
      }
      RegCloseKey(hKeyResult);
      return TCL_OK;
}

int
RegGetValue(HKEY* key, char *subkey, char *value, char *dst, int dlen)
{
      HKEY lkey;      
      LONG r;
      LONG len;
      DWORD type;
      
      r = RegOpenKeyEx(*key, subkey, 0, KEY_READ, &lkey);
      
      if (ERROR_SUCCESS == r) {
            r = RegQueryValueEx(lkey, value, 0, &type, NULL, &len);
            if (ERROR_SUCCESS == r && len <= dlen && type == REG_SZ) {
                  type = REG_SZ;
                  r = RegQueryValueEx(lkey, value, 0, &type, dst, &len);
            } else {
                  SetLastError(r);
                  perror("");
            }
      } else {
            SetLastError(r);
            perror("");
            return FALSE;
      }
      RegCloseKey(lkey);
      return TRUE;
}

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