Import of OpenSSH 4.9p1

[gssapi-openssh.git] / openssh / auth-options.c

diff --git a/openssh/auth-options.c b/openssh/auth-options.c
index a85e408359eeb96d866e5ea57c4780ffb25f9213..6e2256961005562349addbf3b165ec2cd0fe02f9 100644 (file)
--- a/openssh/auth-options.c
+++ b/openssh/auth-options.c
@@ -1,3 +1,4 @@
+/* $OpenBSD: auth-options.c,v 1.41 2008/03/26 21:28:14 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -10,24 +11,38 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth-options.c,v 1.31 2005/03/10 22:40:38 deraadt Exp $");
+
+#include <sys/types.h>
+
+#include <netdb.h>
+#include <pwd.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdarg.h>
 
 #include "xmalloc.h"
 #include "match.h"
 #include "log.h"
 #include "canohost.h"
+#include "buffer.h"
 #include "channels.h"
 #include "auth-options.h"
 #include "servconf.h"
 #include "misc.h"
-#include "monitor_wrap.h"
+#include "key.h"
+#include "hostfile.h"
 #include "auth.h"
+#ifdef GSSAPI
+#include "ssh-gss.h"
+#endif
+#include "monitor_wrap.h"
 
 /* Flags set authorized_keys flags */
 int no_port_forwarding_flag = 0;
 int no_agent_forwarding_flag = 0;
 int no_x11_forwarding_flag = 0;
 int no_pty_flag = 0;
+int no_user_rc = 0;
 
 /* "command=" option. */
 char *forced_command = NULL;
@@ -35,6 +50,9 @@ char *forced_command = NULL;
 /* "environment=" options. */
 struct envstring *custom_environment = NULL;
 
+/* "tunnel=" option. */
+int forced_tun_device = -1;
+
 extern ServerOptions options;
 
 void
@@ -44,6 +62,7 @@ auth_clear_options(void)
        no_port_forwarding_flag = 0;
        no_pty_flag = 0;
        no_x11_forwarding_flag = 0;
+       no_user_rc = 0;
        while (custom_environment) {
                struct envstring *ce = custom_environment;
                custom_environment = ce->next;
@@ -54,6 +73,7 @@ auth_clear_options(void)
                xfree(forced_command);
                forced_command = NULL;
        }
+       forced_tun_device = -1;
        channel_clear_permitted_opens();
        auth_debug_reset();
 }
@@ -103,6 +123,13 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
                        opts += strlen(cp);
                        goto next_option;
                }
+               cp = "no-user-rc";
+               if (strncasecmp(opts, cp, strlen(cp)) == 0) {
+                       auth_debug_add("User rc file execution disabled.");
+                       no_user_rc = 1;
+                       opts += strlen(cp);
+                       goto next_option;
+               }
                cp = "command=\"";
                if (strncasecmp(opts, cp, strlen(cp)) == 0) {
                        opts += strlen(cp);
@@ -127,7 +154,7 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
                                forced_command = NULL;
                                goto bad_option;
                        }
-                       forced_command[i] = 0;
+                       forced_command[i] = '\0';
                        auth_debug_add("Forced command: %.900s", forced_command);
                        opts++;
                        goto next_option;
@@ -159,7 +186,7 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
                                xfree(s);
                                goto bad_option;
                        }
-                       s[i] = 0;
+                       s[i] = '\0';
                        auth_debug_add("Adding to environment: %.900s", s);
                        debug("Adding to environment: %.900s", s);
                        opts++;
@@ -196,7 +223,7 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
                                xfree(patterns);
                                goto bad_option;
                        }
-                       patterns[i] = 0;
+                       patterns[i] = '\0';
                        opts++;
                        if (match_host_and_ip(remote_host, remote_ip,
                            patterns) != 1) {
@@ -241,7 +268,7 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
                                xfree(patterns);
                                goto bad_option;
                        }
-                       patterns[i] = 0;
+                       patterns[i] = '\0';
                        opts++;
                        p = patterns;
                        host = hpdelim(&p);
@@ -269,6 +296,41 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
                        xfree(patterns);
                        goto next_option;
                }
+               cp = "tunnel=\"";
+               if (strncasecmp(opts, cp, strlen(cp)) == 0) {
+                       char *tun = NULL;
+                       opts += strlen(cp);
+                       tun = xmalloc(strlen(opts) + 1);
+                       i = 0;
+                       while (*opts) {
+                               if (*opts == '"')
+                                       break;
+                               tun[i++] = *opts++;
+                       }
+                       if (!*opts) {
+                               debug("%.100s, line %lu: missing end quote",
+                                   file, linenum);
+                               auth_debug_add("%.100s, line %lu: missing end quote",
+                                   file, linenum);
+                               xfree(tun);
+                               forced_tun_device = -1;
+                               goto bad_option;
+                       }
+                       tun[i] = '\0';
+                       forced_tun_device = a2tun(tun, NULL);
+                       xfree(tun);
+                       if (forced_tun_device == SSH_TUNID_ERR) {
+                               debug("%.100s, line %lu: invalid tun device",
+                                   file, linenum);
+                               auth_debug_add("%.100s, line %lu: invalid tun device",
+                                   file, linenum);
+                               forced_tun_device = -1;
+                               goto bad_option;
+                       }
+                       auth_debug_add("Forced tun device: %d", forced_tun_device);
+                       opts++;
+                       goto next_option;
+               }
 next_option:
                /*
                 * Skip the comma, and move to the next option