mirror of
https://github.com/sheumann/hush.git
synced 2024-11-04 14:05:24 +00:00
39a841cecf
ln.c: error_msg(str)->error_msg(%s, str) - remove standart "feature" for hackers reduce 100 bytes don't care in sum
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <syslog.h>
|
|
#include <ctype.h>
|
|
#include "libbb.h"
|
|
#ifdef CONFIG_SELINUX
|
|
#include <selinux/selinux.h> /* for setexeccon */
|
|
#endif
|
|
|
|
#ifdef CONFIG_SELINUX
|
|
static security_context_t current_sid=NULL;
|
|
|
|
void
|
|
renew_current_security_context(void)
|
|
{
|
|
if (current_sid)
|
|
freecon(current_sid); /* Release old context */
|
|
|
|
getcon(¤t_sid); /* update */
|
|
|
|
return;
|
|
}
|
|
void
|
|
set_current_security_context(security_context_t sid)
|
|
{
|
|
if (current_sid)
|
|
freecon(current_sid); /* Release old context */
|
|
|
|
current_sid=sid;
|
|
|
|
return;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
|
|
If COMMAND is nonzero, pass it to the shell with the -c option.
|
|
If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
|
|
arguments. */
|
|
|
|
void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args)
|
|
{
|
|
const char **args;
|
|
int argno = 1;
|
|
int additional_args_cnt = 0;
|
|
|
|
for ( args = additional_args; args && *args; args++ )
|
|
additional_args_cnt++;
|
|
|
|
args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
|
|
|
|
args [0] = bb_get_last_path_component ( bb_xstrdup ( shell ));
|
|
|
|
if ( loginshell )
|
|
args [0] = bb_xasprintf ("-%s", args [0]);
|
|
|
|
if ( command ) {
|
|
args [argno++] = "-c";
|
|
args [argno++] = command;
|
|
}
|
|
if ( additional_args ) {
|
|
for ( ; *additional_args; ++additional_args )
|
|
args [argno++] = *additional_args;
|
|
}
|
|
args [argno] = 0;
|
|
#ifdef CONFIG_SELINUX
|
|
if ( (current_sid) && (!setexeccon(current_sid)) ) {
|
|
freecon(current_sid);
|
|
execve(shell, (char **) args, environ);
|
|
} else
|
|
#endif
|
|
execv ( shell, (char **) args );
|
|
bb_perror_msg_and_die ( "cannot run %s", shell );
|
|
}
|