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argve0, psfool
From: |
Daniel C. Bastos |
Subject: |
argve0, psfool |
Date: |
Mon, 24 Dec 2007 13:29:47 -0500 |
I always miss these two programs on every system I meet. argv0 is very
handy when dealing with programs that care about argv[0] and psfool is
essential when giving out passwords through the command line. I figure
these two should be in coreutils.
/* psfool - formats argv[] with enough bytes to go beyond ps' reach.
Copyright (C) 2007 Free Software Foundation, Inc.
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 2, 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, write to the Free Software
Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* Daniel C. Bastos <address@hidden> */
#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <getopt.h>
#include "system.h"
#include "error.h"
#include "long-options.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "psfool"
#define AUTHORS "Daniel C. Bastos"
/* The name this program was run with. */
char *program_name;
#define min(a,b) (a) <= (b) ? (a) : (b)
#define SIZE 256
void
usage (int status)
{
if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("\
Usage: %s fake real [arg1 arg2 ... argn]\n\
"),
program_name, program_name);
fputs (_("\
Runs `real' fooling ps into thinking it was `fake'\n\
\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status);
}
void run(char *argv1, char **argv, char **envp)
{
execve(argv1, argv, envp);
}
int
main (int argc, char **argv, char **envp)
{
int i; char real[128]; char fake[128]; char vargv[8192]; int n;
initialize_main (&argc, &argv);
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
usage, AUTHORS, (char const *) NULL);
if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
usage (EXIT_FAILURE);
if (argc < 2)
usage(EXIT_FAILURE);
if (strlen(argv[1]) >= (sizeof fake - 1)) {
error (EXIT_FAILURE, 0, _("fake is too long"), argv[1]);
}
if (strlen(argv[2]) >= (sizeof real - 1)) {
error (EXIT_FAILURE, 0, _("real is too long"), argv[1]);
}
/* copies (argv[1] = fake) into fake[] */
n = min(sizeof fake - 1, strlen(argv[1]));
strncpy(fake, argv[1], n); fake[n] = '\0';
/* copies (argv[2] = real) into real[] */
n = min(sizeof real - 1, strlen(argv[2]));
strncpy(real, argv[2], n); real[n] = '\0';
memset(vargv, ' ', SIZE); /* format vector argv[] with spaces */
/* put fake into vargv[] */
strncpy(vargv, fake, strlen(fake));
/* put real into argv[] */
strncpy(vargv + SIZE, real, min(sizeof vargv - SIZE, strlen(real)));
argv[2] = vargv;
run(real, argv + 2, envp);
error (EXIT_FAILURE, 0, _("Could not run %s"), argv[1]);
}
/* argv0 - run program with argv[0] as specified by user
Copyright (C) 2007 Free Software Foundation, Inc.
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 2, 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, write to the Free Software
Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* Daniel C. Bastos <address@hidden> */
#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <getopt.h>
#include "system.h"
#include "error.h"
#include "long-options.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "argv0"
#define AUTHORS "Daniel C. Bastos"
/* The name this program was run with. */
char *program_name;
void
usage (int status)
{
if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("\
Usage: %s program argv0 [arg1 arg2 ... argn]\n\
"),
program_name, program_name);
fputs (_("\
Runs program with argv[0] set to argv0 and args as other arguments\n\
\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status);
}
void run(char *argv1, char **argv, char **envp)
{
execve(argv1, argv, envp);
}
int
main (int argc, char **argv, char **envp)
{
initialize_main (&argc, &argv);
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
usage, AUTHORS, (char const *) NULL);
if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
usage (EXIT_FAILURE);
if (argc < 2)
usage(EXIT_FAILURE);
run(argv[1] , argv + 2, envp);
error (EXIT_FAILURE, 0, _("Could not run %s"), argv[1]);
}
- argve0, psfool,
Daniel C. Bastos <=
- Re: argve0, psfool, Mike Frysinger, 2007/12/24
- Re: argve0, psfool, Brian Dessent, 2007/12/25
- Re: argve0, psfool, Andreas Schwab, 2007/12/25
- Re: argve0, psfool, Andreas Schwab, 2007/12/25
- Re: argve0, psfool, Mike Frysinger, 2007/12/27
- Re: argve0, psfool, Jim Meyering, 2007/12/28
- Re: argve0, psfool, Pádraig Brady, 2007/12/28
- Re: argve0, psfool, Daniel C. Bastos, 2007/12/28