The Business Master (3rd Edition)

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Text File | 1989-01-02 | 25.4 KB | 592 lines

JLOCK.EXE version 0.1a (c) copy right 1988 All Rights Reserved Have you every typed "DEL *.COM" and then remembered that you accidentally deleted your "VITAL!XY.COM" as well? or renamed an important file somewhere inside a "RENAME *.TXT *.TMP" by mistake? or executed a program which you really shouldn"t have? or opened/copied a file which you did not meant to? or did your/shareware/freeware program accidentally delete files it shouldn"t have? (and your last back up was done sometime last year). This is a memory resident utility which controls the access to a list of file names so that you can control whether certain files may be opened, created, executed, deleted, renamed or allowed to change file mode. Since files must be opened before it can be copied, this controls file copying also. A user written list of files (in a file which you must called JLOCK) along with access types allowed following it will be read in, every time you run JLOCK.EXE. The list can have up to 200 file names and the settings can be viewed any time from the pop up menu. This program itself can come out from memory any time you run big programs which require almost all of the 640 kb available on a PC "2" or the 544 kb on the older PC "1" without having to reboot your computer. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= If you simply type JLOCK<ntr> then you get the help screen only. JLOCK.EXE will not become memory resident, nor will it remove a copy of itself if already in memory. This mode is designed to remind you of some (not all) of the parameters available when you run JLOCK.EXE without having to refer to this document. In case you're wondering about the wastefulness of storing such mini-helps in the program, this and many other messages stored in JLOCK.EXE are overwritten by your list of file names when JLOCK.EXE becomes memory resident so that the memory space is not wasted. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= To run this, simply type JLOCK RUN<ntr> and end it with an <ENTER> or <ntr> or <cr> or anything else you want to call the carriage return. This document and all documents by my group uses the "<ntr>" format. Just the letter "r" in "run" will work also. The <alt> and "M" will pop up the menu in case you need to see which files are J"lock"ed and what access rights are granted to each file. The pop up menu itself has a mini-help of its own: Just type <f1> as is stated on the menu. You can load any other memory resident program AFTER the JLOCK.EXE to be removed along with JLOCK.EXE, provided that the other programs have my name mentioned somewhere or it mentions that this program will wipe out that particular program also. Do not run any other memory resident program after JLOCK.EXE if not made by this group or specifically mentions that JLOCK.EXE will wipe out that software also. If you might wipe JLOCK.EXE from memory by accident, lock up JLOCK.EXE with the "L" parameter at the command line so that JLOCK.EXE cannot come out and destroy the memory map of your system. With the default above, there is no need to type a password to pop up the pop up menu. The program can be wiped from memory, and a chirping sound will be generated when you try to (O)pen, (C)reate, (E)xecute, (D)elete, re(N)ame or change file (M)ode for the list of file names you specified. Although there is no "C"opy option mentioned, the process of copying a file requires that a file be opened first, so setting a file so that it cannot be opened, automatically prevents it from being copied as well. You must provide a file called "JLOCK" without any extension. This file must contain a list of file names and the letter code for accesses which you allow: To allow opening (copying) that file, follow its name with "o". To allow creating a file by that name, follow its name with "c". To allow execution of a program, follow its name with "e". To allow deletion of a file, follow its name with "d". To allow renaming of a file, follow its name with "n". To allow a file to change mode (to read only, system file, etc using various utilities available), follow its name with "m". For example, if the file has the following list wordproc.exe e n<ntr> act o d<ntr> 78 n<ntr> 12345678.com n<ntr> keep<ntr> then "wordproc.exe" is allowed to be executed and may be renamed to something else. However, a file of this name cannot be created, deleted, opened, or allowed to change file mode. This means that if you type "DEL WORD*.EXE", then every ".EXE" program which begins with "WORD" will be deleted, except for "wordproc.exe", since this name is not given access for deletion. Instead, a short beep (by default) signals that an attempt to delete a protected file occurred. Similarly, the "act" file is allowed to be Opened so that you can use your word processor to read and write it, and you can even Delete it. But you cannot reName it to something else, nor change file Mode to read-only. The file called "78" cannot be reNamed but you can do anything else. The file called "12345678.com" cannot be Executed unless you intentionally reName it to some other name which is not in the list. The presence of the "keep" file will be display when you type DIR but cannot be typed out to screen or deleted or changed in any way because no access is given for any function. Once you wipe out JLOCK.EXE from memory, then the above list of files will behave as always, ready to be deleted or renamed or executed by a slipperly finger or two. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= To lock this program so that it will not come out of memory, type JLOCK L<ntr> If you have other commands entered at this command line, it is a good practice to separate the commands with at least one space. There is no need to enter the Run command in this case. If you enter the Run command, everything afterwards is ignored. In other words, "JLOCK R L" will run JLOCK.EXE but will not lock the program from wiping itself out of memory. If another program which can wipe itself was loaded BEFORE JLOCK.EXE, then this feature will not work since the other program's feature to wipe itself as well and this program will take precedence. Note that there are several high level languages available on the market with features to make programs which can become memory resident and also wipe itself out also. However, none of those types of programs work unless it is the last memory resident program you loaded. On top of that, those types of programs take up an awful lot of memory, while accomplishing relatively little. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= To prevent the chirping sound (No-sound) when your program or DOS tries to use a feature which is turned off, type JLOCK N<ntr> In this case, you do not have to type the "R" parameter to run this. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= To wipe this program and any other program ran after this from memory, JLOCK W<ntr> DOS is given back the memory used by this program and any other program loaded after this. This allows memory hungry program to be ran without your having to reboot your computer system. Although this feature is only designed to work with other programs made by my group, it can easily be expanded to work with ANY OTHER programs. Care to have it expanded? I'd like to hear from you. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= To prevent the pop up menu from popping up unless you know the password, type JLOCK Ppassword<ntr> All letters after the letter "p" until a space, tab or the end of a line will be taken as the password. Although the first letter "P" to indicate that the next line to follow is the password itself can be in capital or small letter, the password itself must match each capital or small letter you type at the pop up prompt. So if your password is "Cathy", then using "cathy" or "cAthy" at the pop up prompt for a pass will not work. The password may be up to 78 characters long, including any character from chr$(33) through chr$(255). If you literally type JLOCK pcAThy<ntr> to run JLOCK.EXE, then when the prompt to enter the password appears, you must literally type the "cAThy" as is to access the pop up menu. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= If a password is required, then you are given a default of three times to type the proper password. To change the number of tries allowed to 2, type JLOCK T2<ntr> The default is to allow three tries. Any value over 250 is ignored, though any value over five or six doesn't make much sense. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The pop up by default will appear on the left top column and row, in other words on the column one and row one. To change the default row and column of the left top corner of the pop up menu, type JLOCK -5 ^8 The top row is set for row five and the left column is set for column eight. If only the row value exists as in JLOCK -4 Then the top row is set for row five and the left column takes on the default value of one. Similarly, if the column value exists but no row value is given, then row value is set for one by default. The row value must be 35 or less and the column value must be 32 or less. If you set the row value for anything above 19 on a CGA (color graphic adaptor) or a monochrome adaptor equipped monitor, the pop up menu will not appear properly. The excessively large value allowed for the row is for EGA and VGA equipped monitors set to display 43/50 lines. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= If you have a color monitor, or at least a monochrome/amber monitor, you can try a pop up other than the default black letter on white background. Of course, even with a green phosphor black/white monitor, you can try this to avoid screen burn outs. JLOCK A7<ntr> This sets the screen for white letter on black background. Of course, on amber/green monitor, it appears as amber/green. The default is 112 for reverse letter. If you try JLOCK A0<ntr> then the default of 112 is used, because attribute = 0 means black letter on black background, which cannot be seen. But 'c119' for white letters on white background is acceptable, if for some reason the pop up menu should not be visible. To change the color on a color monitor to blue letters on black, type JLOCK A1 The values are the following for letter colors. To get the color for the background, multipy by 16 and add to the letter color value. 0 black 8 gray 1 blue 9 light blue 2 green 10 light green 3 cyan 11 light cyan 4 red 12 light red 5 magenta 13 light magenta 6 brown 14 yellow 7 white 15 bright white For example, to get blue letters on green background, use JLOCK A33<ntr> since green background is 2 * 16 and blue letter is 1. ( 2 * 16 + 1 = 33 ) On IBM color monitors, the distinction is clear. On older NEC MultiSync and similar monitors, the intensity control has to be kept above a certain threshhold before they become distinct. On monochrome, the black letter on white background default is recommended. Many combinations produce non-displaying characters. If you have Hercules' RAM Font or IBM EGA/VGA with expanded character set beyond 256, then this may produce unusual effects with the font displayed reflecting the color combinations. Be careful if you have these cards. The reason why this is called an "A"ttribute, rather than a "C"olor parameter is because on non-color monitors, this controls whether the letter is regular, high-intensity, reverse, blinking etc. And none of these are in color. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= PROMPTS AND MESSAGES =-=-= JLOCK: Enter password or <esc> =-=-= When the pop up menu is protected, this message will appear to ask you to enter the password. When you type the password, the letters do not appear on screen, but backspacing will correct any mistyping if you noticed it. End the password with a carriage return or type the escape key to get out any time. You are given a default of three tries to enter the proper password. And if you don't make it, then the pop up menu will not appear. =-=-= Sorry, I cannot remove JLOCK because it is not in memory =-=-= If you tried to wipe JLOCK.EXE from memory when you did not have one in memory, then you get this message. =-=-= You don't have to do it, JLOCK is already in memory =-=-= If you tried to run JLOCK.EXE when JLOCK.EXE was already in memory, then you get this message. =-=-= Internal memory organization is destroyed !!! I recommend that you warm reBOOT WITH THE CTL-ALT-DEL key combination as soon as possible since the behavior of the machine is no longer predictable. Do not ignore this error message! =-=-= You will get this long message if you tried to wipe JLOCK from memory and something unexpected happened. This can happen often if you were running BASIC to poke values into memory without checking to see if you are allowed to do so by consulting with DOS. JLOCK itself consults with DOS and should not by itself cause this error. =-=-= JLOCK file with list of file names to protect not found =-=-= JLOCK.EXE could not find the file called JLOCK with the list of file names and access codes in the diskette or subdirectory you were in. Since this program's pop up menu doesn't allow you to enter a list of file names, this JLOCK.EXE must have a list of file names already present. =-=-= JLock was locked and not intended to come out of memory =-=-= The "L" command parameter was specified to prevent JLOCK.EXE from being accidentally removed from memory by typing "JLOCK W" at the DOS prompt. =-=-= There is not enough memory available to run this program over another program. Sorry. =-=-= JLOCK.EXE noticed that there is less than 32 kilobytes of free memory available. Since JLOCK.EXE will use about half of this memory, there is not enough memory left over to run any useful program over JLOCK.EXE. Under this condition, JLOCK.EXE will not become memory resident. =-=-= |v.0.1a=Dr=Masaaki=Sawada=&=Assoc.======================| |JLOCK and any other program(s) made by I and/or assoc. | |was/were successfully removed from memory. | |=======================================================| =-=-= This is the normal message displayed when JLOCK.EXE was successfully wiped from memory. =-=-= |===============DR.J.LOCK==============| |file xxxx allows | | | | | | | |v=0.1========================<f1>=help| =-=-= This is the appearance of the pop up menu with the "xxxx" representing the name of the file itself. Type the page up/down keys to look at the files and access types allowed. Type the escape key to get out of the pop up. The types of accesses you allowed will appear as the word "open" if the "o" parameter followed the file name in the list, as the word "rename" if the "n" parameter followed the file name in the list, etc. The screen is set for the reverse black letter on white background format as default. To change it, use the "A"ttribute parameter on the command line mentioned above. Since the pop up can be protected by a password, would you like to have the ability to change access types from this menu? I'm always open to new suggestions. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= TECHNICAL CHATS Although this program relies upon the features present in DOS 2 and cannot work from DOS 1, this program intercepts the DOS 1 functions as well as the DOS 2 functions. The reason is because even DOS 3.3 (the latest as of this writing) relies upon features present in the original DOS 1 for many chores, including opening files, deleting files etc. Why intercept DOS 2 functions? DOS 2 has many features of DOS 1 duplicated at a higher level. As a result, many programs rely exclusively on DOS 2 functions to delete or read a file, rather than use the comparable DOS 1 functions. The double interception is used so that you cannot accidentally delete a vital file from DOS or from a program which allows access to DOS functions like deletion of files. Starting with DOS 3.0, there are two new ways to make files: The "create unique file" function is not intercepted since it is useful only for making temporary files which are to be deleted or renamed anyway. The "create new file" function is not intercepted since this function fails if the file name already existed, avoiding the possibility of overwriting a pre-existing file by the same name. If you or a program then tries to delete or rename this file, it can still be locked if the list of file names (in the JLOCK file without any extension) happens to have the name and no access is given for deletion or renaming of this file. Like to have an option to use a file name other than JLOCK without any extension? I'm all ears. If you happen to be a local BBS operator, this program can lock up your file with the list of passwords. Why? Because some recent time bomb programs display fancy pictures on screen, while copying the file with the list of passwords to another location so that that file can be downloaded later by the person who uploaded the time bomb. Clever, but not clever enough. This program is not meant to be an anti-virus program, but this can serve as a flu-shot against some clever virus programs coming out. If you're looking for a program which will allow you to protect each program with an automatic password protection, coming up soon on CompuServe will be a program called KONTROL.EXE. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Local BBS sysops and software distributors may distribute this software and document for free or a nominal charge. You are not allowed to make unauthorized modification to the program prior to redistribution, except for spelling mistakes or to change Canadian English for American or other forms of languages on this documentation. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= All products and names mentioned are Trademarks or Registered Trademarks of their respective corporations or companies. All enclosed programs, documents and other files are provided AS IS, without any warranty, expressed or implied, including but not limited to fitness for a particular purpose. If you find that this does not work in your machine, we would like to know exactly what happened. With enough information, including where the cursor was, what appeared on screen, which DOS you used, which monitor/video-card, etc, we may be able to make it work in your computer. A contribution of $10 US/Canadian is appreciated if you find this useful, or $20 for an improved one as it comes out. (That's $20 Cdn if you're in Canada and $20 U.S. for U.S & others.) Unless you specify otherwise, you will get a 5-1/4" 360 kb diskette. And if you only specify 3-1/2", it will be formatted as 360kb/720kb on either a 720kb drive or a 1.44Mb drive. Your negative criticisms are as welcome as your positive ones. If you suggested improvements or reported bugs, then your copy will be sent to you after the modification. NAME OF THE PROGRAM: JLOCK.EXE PURPOSE OF THIS PROGRAM: This program lets you prevent files from being opened (copied), deleted, renamed or changed in file attribute such as read-only, hidden etc. my old forwarding address was Dr. Masaaki Sawada University of Waterloo, Faculty of Science Waterloo, Ontario Canada N2L 3G1 the present address (SEE BOTTOM) is Dr. Masaaki Sawada Lady Davis Institute for Medical Research, Sir M. B. Davis Jewish General Hospital, 3755 Chemin Cote Ste-Catherine, Montreal, Quebec, Canada H3T 1E2 The institute name is given instead of home address(es) to lower the chances that any mail is delivered to a wrong address (a common occurrence). However, no institute time nor equipment was used to write this program or document. +-+-+-+-+-+-+-+ SWEATING OVER THE ADDRESSES? +-+-+-+-+-+-+ After June - October 1989, or even now, if you're frustrated by the cumbersome and ever shifting addresses, forward letters to c/o LCS P.O. Box 956 Outremont, Quebec Canada H2V 4R8 This doesn't change. And boy, is it short. (LCShort is an interesting macro key program, and you'll soon hear about an equally interesting macro key program called CTSYND on CompuServe in a month or two, I hope.) +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+