/******************************************\
 *
 * Command line tool written
 * to allow us to encrypt VNC passwords so as
 * to generate NT registry files to overwrite
 * the VNC service password.
 *
 * Download the WinVNC source and put this in vnc_winsrc/winvnc
 * then compile under unix with GCC to produce unix binary or use
 * whatever to produce windows binaries.
 *
 * Released under GNU Public License.
 */

#include "d3des.c"
#include "vncauth.c"

int main(int argc, char *argv[])
{
 FILE *regfile, *vncconfig;
 char *decoded;
 unsigned int xncrypted[15];
 char filename[2048];
 char plaintext[2048];
 char encrypted[2048];

 if ( argc!=3 && argc!=4)
    {
        goto help;
    }

 if ( strncmp(argv[1],"-e",3)==0)
    {
         if ( argc!=3) goto help;
      strncpy(plaintext,argv[2],15);
      //printf("Plaintext is %s\n",plaintext);
      vncEncryptPasswd(plaintext,encrypted);
      printf("%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x\n",
            (unsigned char) encrypted[0], (unsigned char) encrypted[1],
            (unsigned char) encrypted[2], (unsigned char) encrypted[3],
            (unsigned char) encrypted[4], (unsigned char) encrypted[5],
            (unsigned char) encrypted[6], (unsigned char) encrypted[7]);

    }
else
 if ( strncmp(argv[1],"-E",3)==0)
    {
      if ( argc!=3) goto help;
      strncpy(plaintext,argv[2],15);
      //printf("Plaintext is %s\n",plaintext);
      vncEncryptPasswd(plaintext,encrypted);
      printf("%02x%02x%02x%02x%02x%02x%02x%02x\n",
            (unsigned char) encrypted[0], (unsigned char) encrypted[1],
            (unsigned char) encrypted[2], (unsigned char) encrypted[3],
            (unsigned char) encrypted[4], (unsigned char) encrypted[5],
            (unsigned char) encrypted[6], (unsigned char) encrypted[7]);

    }
else
 if ( strncmp(argv[1],"-H",3)==0)
    {
       if ( argc!=4) goto help;
      strncpy(plaintext,argv[3],15);
      //printf("Plaintext is %s\n",plaintext);
      vncEncryptPasswd(plaintext,encrypted);

      snprintf(filename,1024,"%s.vnc",argv[2]);
      vncconfig=fopen(filename,"wt");
      if (!vncconfig) {perror("Couldn't create .vnc file"); exit(1);}

      snprintf(filename,1024,"%s.reg",argv[2]);
      regfile=fopen(filename,"wt");
      if (!regfile) {perror("Couldn't create .reg file"); exit(1);}

      fprintf(vncconfig,"[connection]\n");
      fprintf(vncconfig,"host=%s\n",argv[2]);
      fprintf(vncconfig,"port=5900\n");
      fprintf(vncconfig,"password=");
      fprintf(vncconfig,"%02x%02x%02x%02x%02x%02x%02x%02x\n",
            (unsigned char) encrypted[0], (unsigned char) encrypted[1],
            (unsigned char) encrypted[2], (unsigned char) encrypted[3],
            (unsigned char) encrypted[4], (unsigned char) encrypted[5],
            (unsigned char) encrypted[6], (unsigned char) encrypted[7]);
      fprintf(vncconfig,"[options]\n");
      fprintf(vncconfig,"use_encoding_0=1\n");
      fprintf(vncconfig,"use_encoding_1=1\n");
      fprintf(vncconfig,"use_encoding_2=1\n");
      fprintf(vncconfig,"use_encoding_3=1\n");
      fprintf(vncconfig,"use_encoding_4=1\n");
      fprintf(vncconfig,"use_encoding_5=1\n");
      fprintf(vncconfig,"preferred_encoding=5\n");
      fprintf(vncconfig,"restricted=0\n");
      fprintf(vncconfig,"viewonly=0\n");
      fprintf(vncconfig,"fullscreen=0\n");
      fprintf(vncconfig,"8bit=0\n");
      fprintf(vncconfig,"shared=0\n");
      fprintf(vncconfig,"swapmouse=0\n");
      fprintf(vncconfig,"belldeiconify=0\n");
      fprintf(vncconfig,"emulate3=1\n");
      fprintf(vncconfig,"emulate3timeout=100\n");
      fprintf(vncconfig,"emulate3fuzz=4\n");
      fprintf(vncconfig,"disableclipboard=0\n");
      fprintf(vncconfig,"localcursor=1\n");
      fprintf(vncconfig,"scale_num=1\n");
      fprintf(vncconfig,"scale_den=1\n");

      fclose(vncconfig);

      fprintf(regfile,"REGEDIT4\n\n");
      fprintf(regfile,"[HKEY_LOCAL_MACHINE\\SOFTWARE\\ORL\\WinVNC3\\Default]\n");
      fprintf(regfile,"\"Password\"=hex:%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x\n",
            (unsigned char) encrypted[0], (unsigned char) encrypted[1],
            (unsigned char) encrypted[2], (unsigned char) encrypted[3],
            (unsigned char) encrypted[4], (unsigned char) encrypted[5],
            (unsigned char) encrypted[6], (unsigned char) encrypted[7]);

      fclose(regfile);
      return 0;
    }
else
 if ( strncmp(argv[1],"-h",3)==0)
    {
       if ( argc!=4) goto help;
      strncpy(plaintext,argv[3],15);
      //printf("Plaintext is %s\n",plaintext);
      vncEncryptPasswd(plaintext,encrypted);

      snprintf(filename,1024,"%s.vnc",argv[2]);
      vncconfig=fopen(filename,"wt");
      if (!vncconfig) {perror("Couldn't create .vnc file"); exit(1);}

      fprintf(vncconfig,"[connection]\n");
      fprintf(vncconfig,"host=%s\n",argv[2]);
      fprintf(vncconfig,"port=5900\n");
      fprintf(vncconfig,"password=");
      fprintf(vncconfig,"%02x%02x%02x%02x%02x%02x%02x%02x\n",
            (unsigned char) encrypted[0], (unsigned char) encrypted[1],
            (unsigned char) encrypted[2], (unsigned char) encrypted[3],
            (unsigned char) encrypted[4], (unsigned char) encrypted[5],
            (unsigned char) encrypted[6], (unsigned char) encrypted[7]);
      fprintf(vncconfig,"[options]\n");
      fprintf(vncconfig,"use_encoding_0=1\n");
      fprintf(vncconfig,"use_encoding_1=1\n");
      fprintf(vncconfig,"use_encoding_2=1\n");
      fprintf(vncconfig,"use_encoding_3=1\n");
      fprintf(vncconfig,"use_encoding_4=1\n");
      fprintf(vncconfig,"use_encoding_5=1\n");
      fprintf(vncconfig,"preferred_encoding=5\n");
      fprintf(vncconfig,"restricted=0\n");
      fprintf(vncconfig,"viewonly=0\n");
      fprintf(vncconfig,"fullscreen=0\n");
      fprintf(vncconfig,"8bit=0\n");
      fprintf(vncconfig,"shared=0\n");
      fprintf(vncconfig,"swapmouse=0\n");
      fprintf(vncconfig,"belldeiconify=0\n");
      fprintf(vncconfig,"emulate3=1\n");
      fprintf(vncconfig,"emulate3timeout=100\n");
      fprintf(vncconfig,"emulate3fuzz=4\n");
      fprintf(vncconfig,"disableclipboard=0\n");
      fprintf(vncconfig,"localcursor=1\n");
      fprintf(vncconfig,"scale_num=1\n");
      fprintf(vncconfig,"scale_den=1\n");

      fclose(vncconfig);
    }
else

   if ( strncmp(argv[1],"-d",3)==0)
    {
      if ( argc!=3) goto help;
      sscanf(argv[2],"%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x",
            &xncrypted[0],&xncrypted[1],&xncrypted[2],&xncrypted[3],&xncrypted[4],&xncrypted[5],&xncrypted[6],&xncrypted[7]);

      encrypted[0]=(unsigned char) xncrypted[0];
      encrypted[1]=(unsigned char) xncrypted[1];
      encrypted[2]=(unsigned char) xncrypted[2];
      encrypted[3]=(unsigned char) xncrypted[3];
      encrypted[4]=(unsigned char) xncrypted[4];
      encrypted[5]=(unsigned char) xncrypted[5];
      encrypted[6]=(unsigned char) xncrypted[6];
      encrypted[7]=(unsigned char) xncrypted[7];

      decoded=vncDecryptPasswd(encrypted);
      if ( !decoded) {fprintf(stderr,"Couldn't decrypted that password\n"); exit(1);}
      else
        printf("Password=\"%s\" (without quotes) hex:%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x\n",decoded,
                    (unsigned char) decoded[0], (unsigned char) decoded[1], (unsigned char) decoded[2],
                    (unsigned char) decoded[3], (unsigned char) decoded[4],(unsigned char) decoded[5],
                    (unsigned char) decoded[6], (unsigned char) decoded[7]);
      return 0;
    }
else if ( strncmp(argv[1],"-R",3)==0)
    {
        if ( argc!=3) goto help;
        strncpy(plaintext,argv[2],15);
        vncEncryptPasswd(plaintext,encrypted);

        puts("REGEDIT4");
        puts("");
        puts("[HKEY_LOCAL_MACHINE\\SOFTWARE\\ORL\\WinVNC3\\Default]");
        printf("\"Password\"=hex:%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x\n",
            (unsigned char) encrypted[0], (unsigned char) encrypted[1],
            (unsigned char) encrypted[2], (unsigned char) encrypted[3],
            (unsigned char) encrypted[4], (unsigned char) encrypted[5],
            (unsigned char) encrypted[6], (unsigned char) encrypted[7]);
        return 0;
     }
else
{
        help:
        fprintf(stderr,"\nVNC Password generator/[en|de]coder\n");
        fprintf(stderr,"Use this at your own risk. No Warranty implied or otherwise provided.\n\n");

        fprintf(stderr,"Copyright (C) 2002 Ray Arachelian, All Rights Reserved\n");
        fprintf(stderr,"Released under the terms of the GNU Public License\n");
        fprintf(stderr,"see http://www.gnu.org/licenses/gpl.html for licensing\n");

        fprintf(stderr,"\nUsage %s command parameters:\n\n",argv[0]);
        fprintf(stderr," -d {hexstring i.e: 1a,2c,3d,4c,5e,6f,78,af} to decrypt a VNC password\n");
        fprintf(stderr," -e {plaintext} to encrypt to hex VNC password with commas (as used in NT regedit)\n");
        fprintf(stderr," -E {plaintext} to encrypt to hex VNC password without commas (as used in .vnc files)\n");
        fprintf(stderr," -h {hostname} {plaintext} to create a vncviewer configuration file (hostname.vnc)\n");
        fprintf(stderr," -H {hostname} {plaintext} to create a vncviewer configuration file\n    and NT server registry file (hostname.vnc, hostname.reg)\n");
        fprintf(stderr," -R {plaintext} to create a Win32 registry file with the encoded passwd\n\n");
        fprintf(stderr,"i.e.\n%s -H myhost password\n    will create myhost.vnc and myhost.reg\n\n",argv[0]);
        fprintf(stderr,"You'd copy the myhost.reg to myhost, double click on it, stop and start the VNC server\n");
        fprintf(stderr,"service.\n");
        fprintf(stderr,"You'd run  vncviewer /config myhost.vnc under a Win32 client to connect to myhost.\n");
        fprintf(stderr,"You'd run  vncviewer -config myhost.vnc under a unix client to connect to myhost.\n");
        exit(0);
}
 return 0;
}