Article 1192 of alt.bbs.waffle:
Relay-Version: VMS News - V6.0-2 01/02/91 VAX/VMS V5.3; site ecl.psu.edu
Path: psuecl!psuvm!ysub!usenet.ins.cwru.edu!agate!riacs!stanford.edu!apple!amdahl!birdsong!larry
Newsgroups: alt.bbs.waffle
Subject: Re: format of waffle password file
Message-ID: <woBTZ1w164w@birdsong>
From: larry@birdsong.UUCP (Lawrence T. Hardiman)
Date: 3 Apr 91 05:27:43 GMT
Organization: The Birdsong Company
Lines: 226

Recently, someone on the alt.bbs.waffle newsgroup asked for the
format of the waffle password file. Well, I had looked at it before,
but had not tried to figure out each field. My curiosity over ran me.
Here is the result of my attempt to reverse engineer the file....
 
Note: this is the MS-DOS password file.
 
The waffle password file is a direct access file and may be accessed
using fseek() and fread(). Each record in the file contains the
password entry for a single user. The size of a single record is
RECSIZE (0x100) bytes. The first record (record zero) in the file is
a dummy record and does not conform to the format of a password
record. Record zero contains the DOS EOF character (0x1A) to inhibit
inspection by some programs. The file is ordered in ascending
sequence on the "user" field.
 
Each record contains 26 fields; all fields are characer strings, with
each field separated by the 0x0A character. Strings are not null
terminated. Fields appear in the record in the order:
 
USER
 
PROTOCOL
 
GROUP
 
ACCOUNT
 
PASSWORD
 
IDENTITY
 
PHONE
 
SHELL
 
EDITOR
 
RESERVED
 
MONITOR
 
PRIVELEGE
 
ACCESS
 
CALLS
 
LAST_ON
 
COMMENT
 
POSTS
 
MESSAGES
 
VOTED
 
UPLOAD
 
DOWNLOAD
 
MAIL
 
NAME
 
LEVEL
 
TERMINAL
 
NEWSCAN
 
The field names are the names displayed in the prompts for the waffle
ADMIN EDIT and ADMIN X commands.
 
There is a maximum length for some fields in the record. That length
is enforced by the ADMIN EDIT or the ADMIN X command in waffle.
Other fields do not seem to have a length enforced by the ADMIN
command and can be input with long strings. This produces
unpredictable results and a corrupt password file!
 
The following program, wafpwlst, reads and lists the password file.
Included in the source, and not used, are field name #defines so that
individual fields may be addressed by name in the array of fields
from the password file record.
 
Maximum field lengths are arbitrarily limited to 66 characters.
You play with it!
 
 
----------------- cut here -----------------------
 
@begin(verbatim)
/*
 * wafpwlst.c -- list the entries in the waffle password file
 *
 * syntax: wafwplst
 *
 * wafwplst reads the waffle password file and lists its fields
 * with field names.
 */
 
#include <stdio.h>
 
 
/*
 * define attributes of the waffle password file
 */
 
#define RECSIZE    0x100
#define NUMFIELDS  26
#define MAXFLDSIZE 66
 
char buf[RECSIZE];       /* A buffer to hold a password filerecord */
 
/*
 *  An array of strings big enough to operate on each field in  * the password record
 */
 
char wafpw[NUMFIELDS][MAXFLDSIZE];
 
/*
 * Waffle Password file field ordering.
 */
 
#define USER        wafwp[0];
#define PROTOCOL    wafwp[1];
#define GROUP       wafwp[2];
#define ACCOUNT     wafwp[3];
#define PASSWORD    wafwp[4];
#define IDENTITY    wafwp[5];
#define PHONE       wafwp[6];
#define SHELL       wafwp[7];
#define EDITOR      wafwp[8];
#define RESERVED    wafwp[9];
#define MONITOR     wafwp[10];
#define PRIVELEGE   wafwp[11];
#define ACCESS      wafwp[12];
#define CALLS       wafwp[13];
#define LAST_ON     wafwp[14];
#define COMMENT     wafwp[15];
#define POSTS       wafwp[16];
#define MESSAGES    wafwp[17];
#define VOTED       wafwp[18];
#define UPLOAD      wafwp[19];
#define DOWNLOAD    wafwp[20];
#define MAIL        wafwp[21];
#define NAME        wafwp[22];
#define LEVEL       wafwp[23];
#define TERMINAL    wafwp[24];
#define NEWSCAN     wafwp[25];
 
/*
 * names of the fields for use in displaying the records
 */
const char fieldname[NUMFIELDS][12] = {
     "User", "Protocol", "Group", "Account",
     "Password", "Identity", "Phone", "Shell",
     "Editor", "Reserved", "Monitor", "Privelege",
     "Access", "Calls", "Last On", "Comment",
     "Posts", "Messages", "Voted", "Uplaod",
     "Download", "Mail", "Name", "Level",
     "Terminal", "Newscan"
 
};  /* End fieldname initialization */
 
 
int  r, i;          /* some work areas.... */
 
int  rct = 1;       /* record counter      */
 
FILE *filea;        /* to read the password file */
char *sp;           /* to decompose the record in buf[] */
 
int main() {
 
   /*
    * Open the password file for read, binary
    */
   if ( (filea = fopen("password", "rb")) == NULL) {
      printf("Cannot open input file\n");
      exit(1);
   }
 
   /*
    * Step over dummy record zero in the file
    */
   fseek(filea, RECSIZE, SEEK_SET);
 
   /*
    * for each record in the file...
    */
   while( (r = fread(buf, 0x100, 1, filea)) == 1 ) {
      /*
       * tokenize the record in buf into null terminated strings
       */
      for (i = 0; i < RECSIZE; i++)
          if ( *(buf + i) == 0x0a) *(buf + i) = 0x00;
 
      /*
       *  copy the strings in buf[] into the array of strings
       */
      sp = buf;
      for(i = 0; i < NUMFIELDS; i++) {
        strcpy(wafpw[i], sp);
        while( *(sp++) ) ;
      }
 
      /*
       *  display the fields in the array of strings
       */
		printf("\nRecord %d\n", rct++);
      for(i = 0; i < NUMFIELDS; i++)
         printf("%12s: %s\n", *(fieldname + i), *(wafpw + i) );
 
   } /* end while */
 
   printf("\n\nEnd of File on input\n");
   return 0;
 
} /* end main() -- wafwplst.c */
@end(verbatim)
 
 
 
+--larry@birdsong.uucp----------------------------------------------+