home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Best Objectech Shareware Selections
/
UNTITLED.iso
/
boss
/
word
/
text
/
024
/
tdecfg.c
< prev
next >
Wrap
C/C++ Source or Header
|
1993-06-04
|
23KB
|
747 lines
/*
* A configuration utility was written to customize the tde executable file.
* You only need one file to run tde - the executable. No configuration files
* to worry about.
*
* With this version, there is no need to figure the offsets each time
* tde.exe is modified. The original program to find the offsets was written
* by Jim Lee, jlee@ece.orst.edu. Simple pattern matching machines are used
* to find the offsets. On one pass thru tde.exe, the machines will quickly
* find all signatures. The pattern matching machines are loosely based on
* the multiple string search algorithm by Alfred Aho and Margaret Corasick.
*
* See:
*
* Alfred V. Aho and Margaret J. Corasick, "Efficient String Matching:
* An Aid to Bibliographic Search." _Communications of the ACM_ 18
* (No. 6): 333-340, 1975.
*
*
* Program name: tdecfg
* Author: Frank Davis
* Date: October 5, 1991
* Date: June 5, 1993
*
* This program is released into the public domain. You may distribute
* it freely, Frank Davis.
*/
#include <bios.h>
#include <dos.h>
#include <io.h>
#include <malloc.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "tdecfg.h"
struct vcfg cfg; /* video stuff */
FILE *tde_exe; /* FILE pointer to tde.exe */
long sort_offset;
long mode_offset;
long color_offset;
long macro_offset;
long keys_offset;
long two_key_offset;
long help_offset;
struct screen cfg_choice[] = {
{5,25,"1. Change colors" },
{7,25,"2. Redefine keys" },
{9,25,"3. Install new help screen" },
{11,25,"4. Set default modes" },
{13,25,"5. Install permanent macro file" },
{15,25,"6. Read in a configuration file" },
{17,25,"7. Exit" },
{20,20,"Please enter choice: " },
{0,0,NULL}
};
char *greatest_composer_ever = "W. A. Mozart, 1756-1791";
/*
* Name: main
* Date: October 5, 1991
* Notes: Strategy is fairly straight forward - 1) initialize all the
* variables 2) show the user a color sample 3) make the changes
* permanent if desired.
*/
void main( int argc, char *argv[] )
{
int rc;
int c;
char fname[82];
char *buff;
/*
* lets get a 8k buffer for our pattern matching machines.
*/
if ((buff = malloc( 8200 )) == NULL) {
puts( "\nNot enough memory." );
exit( 1 );
}
puts( "\nEnter tde executable file name (<Enter> = \"tde.exe\") :" );
gets( fname );
if (strlen(fname) == 0)
strcpy( fname, "tde.exe" );
if ((rc = access( fname, EXIST )) != 0) {
puts( "\nFile not found." );
exit( 1 );
} else if ((tde_exe = fopen( fname, "r+b" )) == NULL ) {
puts( "\nCannot open executable file." );
exit( 2 );
}
find_offsets( buff );
free( buff );
video_config( );
cls( );
show_box( 0, 0, cfg_choice, NORMAL );
for (rc=0; rc != 1;) {
xygoto( 42, 20 );
c = getkey( );
while (c != '1' && c != '2' && c != '3' && c != '4' && c != '5' &&
c != '6' && c != '7')
c = getkey( );
switch (c) {
case '1' :
tdecolor( );
show_box( 0, 0, cfg_choice, NORMAL );
break;
case '2' :
tdekeys( );
show_box( 0, 0, cfg_choice, NORMAL );
break;
case '3' :
tdehelp( );
show_box( 0, 0, cfg_choice, NORMAL );
break;
case '4' :
tdemodes( );
show_box( 0, 0, cfg_choice, NORMAL );
break;
case '5' :
tdemacro( );
show_box( 0, 0, cfg_choice, NORMAL );
break;
case '6' :
tdecfgfile( );
show_box( 0, 0, cfg_choice, NORMAL );
break;
case '7' :
rc = 1;
break;
}
}
fcloseall( );
puts( " " );
puts( " " );
}
/*********************** original comments *************************/
/*
** OFFSETS.C - Automatically scan tde.exe for config offsets
**
** Author: Jim Lee (jlee@ece.orst.edu)
** Date: 5/12/93
** Status: Released to the public domain
**
** This little utility takes the drudgery out of updating tdecfg.h
** every time you re-compile tde.exe. Just remove the hard-coded
** offsets in tdecfg.h and replace them with '#include "newoff.h"'.
** Then run 'offsets tde.exe > newoff.h'. Now re-compile tdecfg
** and you're done!
**
*/
/***************************** end *******************************/
/*
* Name: find_offsets
* Date: June 5, 1993
* Notes: to increase the speed, I "wired" a pattern matching machine
* for each of the signatures, Frank. the states in the machines
* correspond to the characters in the sig's. on one pass through
* the file, all 7 signatures will be found. all signatures are
* 8 characters long. it's also a little faster if we read the file
* in big chunks. also note that we never have to back-up or reread
* the file.
*/
void find_offsets( char *buff )
{
long off;
int m1, m2, m3, m4, m5, m6, m7;
char sig1[8] = { '\x00','\x01','\x02','\x03','\x04','\x05','\x06','\x07' };
char sig2[8] = "$ modes";
char sig3[8] = "$colors";
char sig4[8] = "$macbuf";
char sig5[8] = "$ keys";
char sig6[8] = "$twokey";
char sig7[8] = "$ help";
unsigned int cnt;
register char *b;
/*
* Let's start the machines 100k into the executable.
*/
m1 = m2 = m3 = m4 = m5 = m6 = m7 = 0;
off = 100000L;
fseek( tde_exe, off, SEEK_SET );
while (!feof( tde_exe )) {
cnt = fread( buff, sizeof(char), 8192, tde_exe );
b = (char *)buff;
for (; cnt > 0; off++, cnt--, b++) {
if (m1 < 8) {
m1 = sig1[m1] == *b ? m1+1 : 0;
if (m1 == 8)
sort_offset = off - 7L;
}
if (m2 < 8) {
m2 = sig2[m2] == *b ? m2+1 : 0;
if (m2 == 8)
mode_offset = off - 7L;
}
if (m3 < 8) {
m3 = sig3[m3] == *b ? m3+1 : 0;
if (m3 == 8)
color_offset = off - 7L;
}
if (m4 < 8) {
m4 = sig4[m4] == *b ? m4+1 : 0;
if (m4 == 8)
macro_offset = off - 7L;
}
if (m5 < 8) {
m5 = sig5[m5] == *b ? m5+1 : 0;
if (m5 == 8)
keys_offset = off - 7L;
}
if (m6 < 8) {
m6 = sig6[m6] == *b ? m6+1 : 0;
if (m6 == 8)
two_key_offset = off - 7L;
}
if (m7 < 8) {
m7 = sig7[m7] == *b ? m7+1 : 0;
if (m7 == 8)
help_offset = off - 7L;
}
}
}
}
/*
* Name: xygoto
* Date: July 21, 1991
* Notes: Use the video interrupt to set the cursor.
*/
void xygoto( int col, int row )
{
union REGS inregs, outregs;
inregs.h.ah = 2;
inregs.h.bh = 0;
inregs.h.dh = row;
inregs.h.dl = col;
int86( VIDEO_INT, &inregs, &outregs );
}
/*
* Name: video_config
* Date: July 21, 1991
* Notes: See main.c for more info.
*/
void video_config( void )
{
#pragma pack( 1 ) /* Use pragma to force packing on byte boundaries. */
struct LOWMEMVID
{
char vidmode; /* 0x449 */
unsigned scrwid; /* 0x44A */
unsigned scrlen; /* 0x44C */
unsigned scroff; /* 0x44E */
struct LOCATE
{
unsigned char col;
unsigned char row;
} csrpos[8]; /* 0x450 */
struct CURSIZE
{
unsigned char end;
unsigned char start;
} csrsize; /* 0x460 */
char page; /* 0x462 */
unsigned addr_6845; /* 0x463 */
char crt_mode_set; /* 0x465 */
char crt_palette; /* 0x466 */
char system_stuff[29]; /* 0x467 */
char