- dtucker@cvs.openbsd.org 2006/03/30 11:40:21

[openssh.git] / monitor.c

diff --git a/monitor.c b/monitor.c
index d672aeb725375ec4ab5ed60dbd23c51ef5dd6444..894523da3c74ea82d79b2769df88c0e791f8c1c3 100644 (file)
--- a/monitor.c
+++ b/monitor.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: monitor.c,v 1.76 2006/03/25 13:17:02 djm Exp $ */
+/* $OpenBSD: monitor.c,v 1.77 2006/03/30 11:40:21 dtucker Exp $ */
 /*
  * Copyright 2002 Niels Provos <provos@citi.umich.edu>
  * Copyright 2002 Markus Friedl <markus@openbsd.org>
@@ -179,6 +179,7 @@ struct mon_table {
 #define MON_ISAUTH     0x0004  /* Required for Authentication */
 #define MON_AUTHDECIDE 0x0008  /* Decides Authentication */
 #define MON_ONCE       0x0010  /* Disable after calling */
+#define MON_ALOG       0x0020  /* Log auth attempt without authenticating */
 
 #define MON_AUTH       (MON_ISAUTH|MON_AUTHDECIDE)
 
@@ -239,8 +240,8 @@ struct mon_table mon_dispatch_proto15[] = {
     {MONITOR_REQ_SESSKEY, MON_ONCE, mm_answer_sesskey},
     {MONITOR_REQ_SESSID, MON_ONCE, mm_answer_sessid},
     {MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
-    {MONITOR_REQ_RSAKEYALLOWED, MON_ISAUTH, mm_answer_rsa_keyallowed},
-    {MONITOR_REQ_KEYALLOWED, MON_ISAUTH, mm_answer_keyallowed},
+    {MONITOR_REQ_RSAKEYALLOWED, MON_ISAUTH|MON_ALOG, mm_answer_rsa_keyallowed},
+    {MONITOR_REQ_KEYALLOWED, MON_ISAUTH|MON_ALOG, mm_answer_keyallowed},
     {MONITOR_REQ_RSACHALLENGE, MON_ONCE, mm_answer_rsa_challenge},
     {MONITOR_REQ_RSARESPONSE, MON_ONCE|MON_AUTHDECIDE, mm_answer_rsa_response},
 #ifdef BSD_AUTH
@@ -334,6 +335,7 @@ monitor_child_preauth(Authctxt *_authctxt, struct monitor *pmonitor)
 
        /* The first few requests do not require asynchronous access */
        while (!authenticated) {
+               auth_method = "unknown";
                authenticated = monitor_read(pmonitor, mon_dispatch, &ent);
                if (authenticated) {
                        if (!(ent->flags & MON_AUTHDECIDE))
@@ -356,7 +358,7 @@ monitor_child_preauth(Authctxt *_authctxt, struct monitor *pmonitor)
 #endif
                }
 
-               if (ent->flags & MON_AUTHDECIDE) {
+               if (ent->flags & (MON_AUTHDECIDE|MON_ALOG)) {
                        auth_log(authctxt, authenticated, auth_method,
                            compat20 ? " ssh2" : "");
                        if (!authenticated)
@@ -366,6 +368,8 @@ monitor_child_preauth(Authctxt *_authctxt, struct monitor *pmonitor)
 
        if (!authctxt->valid)
                fatal("%s: authenticated invalid user", __func__);
+       if (strcmp(auth_method, "unknown") == 0)
+               fatal("%s: authentication method name unknown", __func__);
 
        debug("%s: %s has been authenticated by privileged process",
            __func__, authctxt->user);
@@ -992,17 +996,20 @@ mm_answer_keyallowed(int sock, Buffer *m)
                case MM_USERKEY:
                        allowed = options.pubkey_authentication &&
                            user_key_allowed(authctxt->pw, key);
+                       auth_method = "publickey";
                        break;
                case MM_HOSTKEY:
                        allowed = options.hostbased_authentication &&
                            hostbased_key_allowed(authctxt->pw,
                            cuser, chost, key);
+                       auth_method = "hostbased";
                        break;
                case MM_RSAHOSTKEY:
                        key->type = KEY_RSA1; /* XXX */
                        allowed = options.rhosts_rsa_authentication &&
                            auth_rhosts_rsa_key_allowed(authctxt->pw,
                            cuser, chost, key);
+                       auth_method = "rsa";
                        break;
                default:
                        fatal("%s: unknown key type %d", __func__, type);
@@ -1023,6 +1030,8 @@ mm_answer_keyallowed(int sock, Buffer *m)
                hostbased_cuser = cuser;
                hostbased_chost = chost;
        } else {
+               /* Log failed attempt */
+               auth_log(authctxt, 0, auth_method, compat20 ? " ssh2" : "");
                xfree(blob);
                xfree(cuser);
                xfree(chost);
@@ -1390,6 +1399,7 @@ mm_answer_rsa_keyallowed(int sock, Buffer *m)
 
        debug3("%s entering", __func__);
 
+       auth_method = "rsa";
        if (options.rsa_authentication && authctxt->valid) {
                if ((client_n = BN_new()) == NULL)
                        fatal("%s: BN_new", __func__);