isepwchk/pwgen/c_mainmod.c

//$Header: /cvsroot/esrg/sfesrg/esrgpcpj/isepwchk/pwgen/c_mainmod.c,v 1.3 2002/01/31 13:16:15 dtashley Exp $
//-----------------------------------------------------------------------
//This program is the companion to the .DLL used for InstallShield
//Express validation of serial numbers.  This program generates
//the serial numbers, and the InstallShield Express .DLL verifies
//them.  The DLL was written first, and parts of the DLL were
//pasted into this program.  This program generates the serial
//numbers to be supplied electronically to DigiBuy.  This program
//must be kept in sync with the .DLL.

//--------------------------------------------------------------------------------
//Copyright 2001 David T. Ashley
//-------------------------------------------------------------------------------------------------
//This source code and any program in which it is compiled/used is provided under the GNU GENERAL
//PUBLIC LICENSE, Version 3, full license text below.
//-------------------------------------------------------------------------------------------------
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//  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
//APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
//HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
//OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
//THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
//PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
//IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
//ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
//
//  16. Limitation of Liability.
//
//  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
//WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
//THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
//GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
//USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
//DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
//PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
//EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
//SUCH DAMAGES.
//
//  17. Interpretation of Sections 15 and 16.
//
//  If the disclaimer of warranty and limitation of liability provided
//above cannot be given local legal effect according to their terms,
//reviewing courts shall apply local law that most closely approximates
//an absolute waiver of all civil liability in connection with the
//Program, unless a warranty or assumption of liability accompanies a
//copy of the Program in return for a fee.
//
//                     END OF TERMS AND CONDITIONS
//
//            How to Apply These Terms to Your New Programs
//
//  If you develop a new program, and you want it to be of the greatest
//possible use to the public, the best way to achieve this is to make it
//free software which everyone can redistribute and change under these terms.
//
//  To do so, attach the following notices to the program.  It is safest
//to attach them to the start of each source file to most effectively
//state the exclusion of warranty; and each file should have at least
//the "copyright" line and a pointer to where the full notice is found.
//
//    <one line to give the program's name and a brief idea of what it does.>
//    Copyright (C) <year>  <name of author>
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
//Also add information on how to contact you by electronic and paper mail.
//
//  If the program does terminal interaction, make it output a short
//notice like this when it starts in an interactive mode:
//
//    <program>  Copyright (C) <year>  <name of author>
//    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
//    This is free software, and you are welcome to redistribute it
//    under certain conditions; type `show c' for details.
//
//The hypothetical commands `show w' and `show c' should show the appropriate
//parts of the General Public License.  Of course, your program's commands
//might be different; for a GUI interface, you would use an "about box".
//
//  You should also get your employer (if you work as a programmer) or school,
//if any, to sign a "copyright disclaimer" for the program, if necessary.
//For more information on this, and how to apply and follow the GNU GPL, see
//<http://www.gnu.org/licenses/>.
//
//  The GNU General Public License does not permit incorporating your program
//into proprietary programs.  If your program is a subroutine library, you
//may consider it more useful to permit linking proprietary applications with
//the library.  If this is what you want to do, use the GNU Lesser General
//Public License instead of this License.  But first, please read
//<http://www.gnu.org/philosophy/why-not-lgpl.html>.
//-------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------
#include <stdio.h>
#include <string.h>

#define SN_ROLL_AMOUNT (1)

//Prints introductory stuff to stdout.  Used if no pars or unexpected
//numbers or types of pars.
void print_intro(void)
   {
   char *m[] = {
      "PSNGEN00.EXE--Generates valid passwords for Dave Ashley's software",
      "distributions, Dave Ashley, 11/2000",
      "If you're seeing this message, it means that the number or type of",
      "input parameters were not as expected.  No more detailed diagnostics",
      "are provided, as the program is simple enough that any anomalies can",
      "be located easily.",
      "",
      "Usage:  PSNGEN00 <product_id> <sale_id> <N>",
      "   where ..."
      "      <product_id> is the 11-digit product ID from Digibuy.",
      "      <sale_id> is the [starting] sale ID, which may be up to 8 digits",
      "         long.  This program generates consecutive sale_id's.",
      "      <N> (optional) is the number of valid serial numbers to generate.",
      "         If this parameter is omitted, \"1\" is assumed.",
      };

   int i;

   for (i=0; i<(sizeof(m))/(sizeof(m[0])); i++)
      {
      printf("%s\n", m[i]);
      }

   }

/* Returns a 30-bit random number based on the digit passed.
** There is no rhyme or reason to these numbers--they were
** obtained using the random function on an HP calculator.
*/
void ValidateSN_RandDigitKey(char in, unsigned long *out)
   {
   if (in == '0')
      {
      *out = 0x1C644392;
      }
   else if (in == '1')
      {
      *out = 0x292662DC;
      }
   else if (in == '2')
      {
      *out = 0x316303D8;
      }
   else if (in == '3')
      {
      *out = 0x1D660DC5;
      }
   else if (in == '4')
      {
      *out = 0x0E5E396D;
      }
   else if (in == '5')
      {
      *out = 0x069D4A3A;
      }
   else if (in == '6')
      {
      *out = 0x187DB7D5;
      }
   else if (in == '7')
      {
      *out = 0x0CAF6C5C;
      }
   else if (in == '8')
      {
      *out = 0x23A4CDFB;
      }
   else
      {
      *out = 0x27FEC1C4;
      }
   }


/* Rolls a 30-bit integer argument left by the specified
** number of places.
*/
void ValidateSN_RollLeft(unsigned long *arg, int n)
   {
   unsigned long i;

   n &= 0xF;  /* Be sure not too large. */

   while (n--)
      {
      i = *arg;
      *arg <<= 1;
      *arg &= 0x3FFFFFFE;
      if (i & 0x20000000)
         *arg |= 0x00000001;
      }
   }


/* Maps from the least significant nibble of a 30-bit
** integer to a hexadecimal digit.
*/
char ValidateSN_ToDigit(unsigned long arg)
   {
   char rv;

   arg &= 0xF;

   switch (arg)
      {
      default:
      case  0:  rv = '0'; break;
      case  1:  rv = '1'; break;
      case  2:  rv = '2'; break;
      case  3:  rv = '3'; break;
      case  4:  rv = '4'; break;
      case  5:  rv = '5'; break;
      case  6:  rv = '6'; break;
      case  7:  rv = '7'; break;
      case  8:  rv = '8'; break;
      case  9:  rv = '9'; break;
      case 10:  rv = 'A'; break;
      case 11:  rv = 'B'; break;
      case 12:  rv = 'C'; break;
      case 13:  rv = 'D'; break;
      case 14:  rv = 'E'; break;
      case 15:  rv = 'F'; break;
      }

   return rv;
   }

//Returns the upper-case version of a lower-case letter.
//Anything not a lower-case letter isn't changed.
char ValidateSN_ToUpper(char in)
   {
   if ((in >= 'a') && (in <= 'z'))
      {
      return(in - ('a'-'A'));
      }
   else
      {
      return(in);
      }
   }


int c_main(int argc, char* argv[])
   {
   int i;
   unsigned long hash;
   unsigned long_temp;
   unsigned long n=1;
   unsigned long sn=1;
   char product_id[12];
   char sale_num[9];
   char hash_result[7];

   strcpy(sale_num, "00000000");
   strcpy(hash_result, "000000");

   if ((argc != 3) && (argc != 4))
      goto error_return;

   //Parse in the product number.
   if (strlen(argv[1]) != 11)
      goto error_return;
   strcpy(product_id, argv[1]);

   //Parse in the sale number. */
   if (sscanf(argv[2], "%lu", &sn) == EOF)
      goto error_return;

   if (argc==4) 
      {
      //In this case, n is specified.
      if (sscanf(argv[3], "%lu", &n) == EOF)
         goto error_return;
      };

   //printf("%lu %lu\n", sn, n);

   //For each sale number, hash and print out the result.  The resulting list
   //can be pasted right into the Digibuy web site.


   while (n--)
      {
      sprintf(sale_num, "%08lu", sn);

      //Now calculate the hash.
      hash = 0;

      //Incorporate the part number.
      for (i=0; i<11; i++)
         {
         ValidateSN_RandDigitKey(product_id[i], &long_temp);
         hash ^= long_temp;
         ValidateSN_RollLeft(&hash, SN_ROLL_AMOUNT);
         }

      //Incorporate the sale number.
      for (i=0; i<8; i++)
         {
         ValidateSN_RandDigitKey(sale_num[i], &long_temp);
         hash ^= long_temp;
         ValidateSN_RollLeft(&hash, SN_ROLL_AMOUNT);
         }

      //Stuff the hash into the calculated hash.
      for (i=5; i>=0; i--)
         {
         hash_result[i] = ValidateSN_ToDigit(hash);
         hash >>= 4;
         }
      hash_result[6] = 0;

      printf("%s-%s-%s\n", product_id, sale_num, hash_result); 

      sn++;
      }

   goto end_of_func;
   error_return:
   print_intro();
   end_of_func:
   return(0);
   }


/*
 * $Log: c_mainmod.c,v $
 * Revision 1.3  2002/01/31 13:16:15  dtashley
 * Version control keywords cleaned up.
 *
 * Revision 1.2  2002/01/31 13:14:32  dtashley
 * Version control keywords added to source files.
 *
 * $History: c_mainmod.c $
 * 
 * *****************  Version 1  *****************
 * User: Dtashley     Date: 12/11/00   Time: 1:29a
 * Created in $/PSNGEN00 (Installshield-Digibuy Password Creation)/Src
 * Initial check-in.  Project generates install keys correctly.
 * 
 */

/* End of C_MAINMOD.C */