I would like to hide the ORACLE userid and password that gets
displayed in the command section when using the ps -ef command.
e.g
oracle 18993 1411 0.0 09:51:58 ttyqf 0:00.00 f45run my_form
scott/tiger
Oracle have a program called hide.c which I list below. Unfortunately
this does not work on Digital Unix 4.0B as Digital's ps command will
trim the 3000 spaces that the hide program adds to the command.
Does anyone have any ideas?
/*---------------------------------------------------------------------
-----+
| Can be used as a program prefix: hide program arguments
|
| or as a symbolic link. If this program is not invoked as
hide, it |
| will hide its arguments and invoke the program name.hide
|
| The best way to use this is to rename your critical programs
to |
| program.hide, and create a symbolic link program to hide.
|
| mv sqlplus sqlplus.hide; ln -s hide sqlplus
|
| Thus when sqlplus is invoked, its arguments will be hidden
|
| NOTES
|
| This program works by padding 3000 '/' chars in argv[0]. This
fools|
| all known ps's. This will reduce the argument capacity of
your |
| program by 3000 chars. A good enhancement would be to reduce
the |
| padding if needed so that no arguments are lost - would
require a |
| method of determining the max argument size on the system.
Some |
| system's provide the E2BIG error on exec.
|
| There is some performace penalty for using this program, but
it is |
| minimal because this program is so small - the biggest cost is
the |
| extra exec required to get this program started.
| HISTORY
|
| 09/17/92 D Beusee Fixed to compile on any system
|
+---------------------------------------------------------------------
----*/
/*
* $Header: /home/dba/orapwd/src/RCS/hide.c,v 1.1 1998/07/07 04:45:37
orapwd Exp $
*
* $Log: hide.c,v $
* Revision 1.1 1998/07/07 04:45:37 orapwd
* Initial revision
*
* Revision 1.6 1992/09/22 22:37:17 dbeusee
* Added exit(1) when cannot execvp the program.
*
* Revision 1.5 1992/09/22 11:28:44 dbeusee
* SOme BSD systems have memset(), so add a #define memset MEMSET to
fix
* compilation errors (like on ultrix).
*
* Revision 1.4 1992/09/22 06:34:57 dbeusee
* BSD systems need memset routine.
*
* Revision 1.3 1992/09/22 06:05:13 dbeusee
* Set JUNK_CHAR to ' ' but force last junk char to '/'. This looks
prettier
* when doing 'ps'. Also do not show full path of the program. Also
do not
* show .hide if prog is a symlink to hide.
*
* Revision 1.2 1992/09/22 05:52:26 dbeusee
* If hide could not execvp the program, give an error message.
* if hide was invoked with a full path (e.g. /usr/local/bin/hide),
* do not try to invoke PATH/hide.hide.
*
*
*/
#include <stdio.h>
#ifdef SYS5
#include <string.h>
#else
#include <strings.h>
#define strrchr rindex
#define memset MEMSET /* some BSD systems have a memset() */
char *memset();
#endif
#define JUNK_SIZE 3000
#define JUNK_CHAR ' '
char arg0buf[4096];
char progbuf[4096];
char errbuf[4096];
int main(argc, argv)
int argc;
char *argv[];
{
char *name, *base;
int firstarg;
if (!(name = strrchr(argv[0], '/')))
name = argv[0];
else
name ++; /* get past '/' */
firstarg = (!strcmp(name, "hide")) ? 1 : 0;
if (firstarg && (argc == 1))
{
fprintf(stderr, "Usage: hide program arguments\n");
fprintf(stderr, " ie: hide sqlplus username/password\n");
fprintf(stderr, "if hide is not named hide, it will execute
name.hide (useful as a symbolic link)\n");
exit(1);
}
/* Build program name. If symbolic link mode, use argv[0] ||
.hide */
strcpy(progbuf, argv[firstarg]);
if (!(base = strrchr(argv[firstarg], '/')))
base = argv[firstarg];
else
base ++; /* get past '/' */
if (!firstarg) strcat(progbuf, ".hide");
/* Build arg0 buffer. First, fill it with junk */
memset((void *)arg0buf, JUNK_CHAR, JUNK_SIZE);
arg0buf[JUNK_SIZE-1] = '/'; /* set last char to '/' */
/* Prepend real program name - so ps can see what prog is running
*/
strncpy(arg0buf, base, strlen(base));
/* Append real program name - so prog can see what prog is running
*/
strcpy(arg0buf + JUNK_SIZE, argv[firstarg]);
/* Assign new arg0 buffer to the argv array */
argv[firstarg] = arg0buf;
/* Start the new program with the shifted arguments */
execvp(progbuf, argv + firstarg);
sprintf(errbuf, "Could not execvp '%s'", progbuf);
perror(errbuf);
exit(1);
}
#ifndef SYS5
char *
memset(s, c, n)
register char *s;
register c, n;
{
register char *p = s;
while (n-- > 0)
*s++ = c;
return (p);
}
#endif /* ifndef SYS5 */
> Rob Wilson
>
> UNIX System Administrator/ORACLE Database Administrator
> Australian Submarine Corporation
> rawilson_at_subcorp.com.au
Received on Thu Mar 18 1999 - 23:29:09 NZDT