From 008d0be72b2f160382c6e880765e96b64a050c65 Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 12:04:58 +0100 Subject: imported original firmware WRT54GL_v4.30.11_11_US --- .../src/router/busybox/libbb/setup_environment.c | 93 ++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 release/src/router/busybox/libbb/setup_environment.c (limited to 'release/src/router/busybox/libbb/setup_environment.c') diff --git a/release/src/router/busybox/libbb/setup_environment.c b/release/src/router/busybox/libbb/setup_environment.c new file mode 100644 index 00000000..b18f8967 --- /dev/null +++ b/release/src/router/busybox/libbb/setup_environment.c @@ -0,0 +1,93 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright 1989 - 1991, Julianne Frances Haugh + * 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 +#include +#include +#include +#include +#include +#include +#include "libbb.h" + + + +#define DEFAULT_LOGIN_PATH "/bin:/usr/bin" +#define DEFAULT_ROOT_LOGIN_PATH "/usr/sbin:/bin:/usr/bin:/sbin" + +static void xsetenv ( const char *key, const char *value ) +{ + if ( setenv ( key, value, 1 )) + bb_error_msg_and_die (bb_msg_memory_exhausted); +} + +void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw ) +{ + if ( loginshell ) { + const char *term; + + /* Change the current working directory to be the home directory + * of the user. It is a fatal error for this process to be unable + * to change to that directory. There is no "default" home + * directory. + * Some systems default to HOME=/ + */ + if ( chdir ( pw-> pw_dir )) { + if ( chdir ( "/" )) { + syslog ( LOG_WARNING, "unable to cd to %s' for user %s'\n", pw-> pw_dir, pw-> pw_name ); + bb_error_msg_and_die ( "cannot cd to home directory or /" ); + } + fputs ( "warning: cannot change to home directory\n", stderr ); + } + + /* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH. + Unset all other environment variables. */ + term = getenv ("TERM"); + clearenv ( ); + if ( term ) + xsetenv ( "TERM", term ); + xsetenv ( "HOME", pw-> pw_dir ); + xsetenv ( "SHELL", shell ); + xsetenv ( "USER", pw-> pw_name ); + xsetenv ( "LOGNAME", pw-> pw_name ); + xsetenv ( "PATH", ( pw-> pw_uid ? DEFAULT_LOGIN_PATH : DEFAULT_ROOT_LOGIN_PATH )); + } + else if ( changeenv ) { + /* Set HOME, SHELL, and if not becoming a super-user, + USER and LOGNAME. */ + xsetenv ( "HOME", pw-> pw_dir ); + xsetenv ( "SHELL", shell ); + if ( pw-> pw_uid ) { + xsetenv ( "USER", pw-> pw_name ); + xsetenv ( "LOGNAME", pw-> pw_name ); + } + } +} + -- cgit v1.2.3-54-g00ecf