imported original firmware WRT54GL_v4.30.11_11_US

1 files changed, 93 insertions, 0 deletions

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 <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"
+
+
+
+#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 );
+		}
+	}
+}
+