1 files changed, 87 insertions, 2 deletions

diff --git a/monitor.c b/monitor.c
index 02f2dc869..5db4d52da 100644
--- a/monitor.c
+++ b/monitor.c
@@ -133,6 +133,7 @@ int mm_answer_sign(int, Buffer *);
 int mm_answer_pwnamallow(int, Buffer *);
 int mm_answer_auth2_read_banner(int, Buffer *);
 int mm_answer_authserv(int, Buffer *);
+int mm_answer_authrole(int, Buffer *);
 int mm_answer_authpassword(int, Buffer *);
 int mm_answer_bsdauthquery(int, Buffer *);
 int mm_answer_bsdauthrespond(int, Buffer *);
@@ -163,6 +164,7 @@ int mm_answer_gss_setup_ctx(int, Buffer *);
 int mm_answer_gss_accept_ctx(int, Buffer *);
 int mm_answer_gss_userok(int, Buffer *);
 int mm_answer_gss_checkmic(int, Buffer *);
+int mm_answer_gss_sign(int, Buffer *);
 #endif
 
 #ifdef SSH_AUDIT_EVENTS
@@ -204,6 +206,7 @@ struct mon_table mon_dispatch_proto20[] = {
     {MONITOR_REQ_SIGN, MON_ONCE, mm_answer_sign},
     {MONITOR_REQ_PWNAM, MON_ONCE, mm_answer_pwnamallow},
     {MONITOR_REQ_AUTHSERV, MON_ONCE, mm_answer_authserv},
+    {MONITOR_REQ_AUTHROLE, MON_ONCE, mm_answer_authrole},
     {MONITOR_REQ_AUTH2_READ_BANNER, MON_ONCE, mm_answer_auth2_read_banner},
     {MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
 #ifdef USE_PAM
@@ -232,11 +235,17 @@ struct mon_table mon_dispatch_proto20[] = {
     {MONITOR_REQ_GSSSTEP, MON_ISAUTH, mm_answer_gss_accept_ctx},
     {MONITOR_REQ_GSSUSEROK, MON_AUTH, mm_answer_gss_userok},
     {MONITOR_REQ_GSSCHECKMIC, MON_ISAUTH, mm_answer_gss_checkmic},
+    {MONITOR_REQ_GSSSIGN, MON_ONCE, mm_answer_gss_sign},
 #endif
     {0, 0, NULL}
 };
 
 struct mon_table mon_dispatch_postauth20[] = {
+#ifdef GSSAPI
+    {MONITOR_REQ_GSSSETUP, 0, mm_answer_gss_setup_ctx},
+    {MONITOR_REQ_GSSSTEP, 0, mm_answer_gss_accept_ctx},
+    {MONITOR_REQ_GSSSIGN, 0, mm_answer_gss_sign},
+#endif
     {MONITOR_REQ_MODULI, 0, mm_answer_moduli},
     {MONITOR_REQ_SIGN, 0, mm_answer_sign},
     {MONITOR_REQ_PTY, 0, mm_answer_pty},
@@ -341,6 +350,10 @@ monitor_child_preauth(Authctxt *_authctxt, struct monitor *pmonitor)
                 /* Permit requests for moduli and signatures */
                 monitor_permit(mon_dispatch, MONITOR_REQ_MODULI, 1);
                 monitor_permit(mon_dispatch, MONITOR_REQ_SIGN, 1);
+#ifdef GSSAPI
+                /* and for the GSSAPI key exchange */
+                monitor_permit(mon_dispatch, MONITOR_REQ_GSSSETUP, 1);
+#endif
         } else {
                 mon_dispatch = mon_dispatch_proto15;
 
@@ -417,6 +430,10 @@ monitor_child_postauth(struct monitor *pmonitor)
                 monitor_permit(mon_dispatch, MONITOR_REQ_MODULI, 1);
                 monitor_permit(mon_dispatch, MONITOR_REQ_SIGN, 1);
                 monitor_permit(mon_dispatch, MONITOR_REQ_TERM, 1);
+#ifdef GSSAPI
+                /* and for the GSSAPI key exchange */
+                monitor_permit(mon_dispatch, MONITOR_REQ_GSSSETUP, 1);
+#endif          
         } else {
                 mon_dispatch = mon_dispatch_postauth15;
                 monitor_permit(mon_dispatch, MONITOR_REQ_TERM, 1);
@@ -656,6 +673,7 @@ mm_answer_pwnamallow(int sock, Buffer *m)
         else {
                 /* Allow service/style information on the auth context */
                 monitor_permit(mon_dispatch, MONITOR_REQ_AUTHSERV, 1);
+                monitor_permit(mon_dispatch, MONITOR_REQ_AUTHROLE, 1);
                 monitor_permit(mon_dispatch, MONITOR_REQ_AUTH2_READ_BANNER, 1);
         }
 
@@ -689,14 +707,37 @@ mm_answer_authserv(int sock, Buffer *m)
 
         authctxt->service = buffer_get_string(m, NULL);
         authctxt->style = buffer_get_string(m, NULL);
-        debug3("%s: service=%s, style=%s",
-            __func__, authctxt->service, authctxt->style);
+        authctxt->role = buffer_get_string(m, NULL);
+        debug3("%s: service=%s, style=%s, role=%s",
+            __func__, authctxt->service, authctxt->style, authctxt->role);
 
         if (strlen(authctxt->style) == 0) {
                 xfree(authctxt->style);
                 authctxt->style = NULL;
         }
 
+        if (strlen(authctxt->role) == 0) {
+                xfree(authctxt->role);
+                authctxt->role = NULL;
+        }
+
+        return (0);
+}
+
+int
+mm_answer_authrole(int sock, Buffer *m)
+{
+        monitor_permit_authentications(1);
+
+        authctxt->role = buffer_get_string(m, NULL);
+        debug3("%s: role=%s",
+            __func__, authctxt->role);
+
+        if (strlen(authctxt->role) == 0) {
+                xfree(authctxt->role);
+                authctxt->role = NULL;
+        }
+
         return (0);
 }
 
@@ -1663,6 +1704,11 @@ mm_get_kex(Buffer *m)
         kex->kex[KEX_DH_GRP14_SHA1] = kexdh_server;
         kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;
         kex->kex[KEX_DH_GEX_SHA256] = kexgex_server;
+#ifdef GSSAPI
+        kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_server;
+        kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_server;
+        kex->kex[KEX_GSS_GEX_SHA1] = kexgss_server;
+#endif
         kex->server = 1;
         kex->hostkey_type = buffer_get_int(m);
         kex->kex_type = buffer_get_int(m);
@@ -1904,6 +1950,7 @@ mm_answer_gss_accept_ctx(int sock, Buffer *m)
                 monitor_permit(mon_dispatch, MONITOR_REQ_GSSSTEP, 0);
                 monitor_permit(mon_dispatch, MONITOR_REQ_GSSUSEROK, 1);
                 monitor_permit(mon_dispatch, MONITOR_REQ_GSSCHECKMIC, 1);
+                monitor_permit(mon_dispatch, MONITOR_REQ_GSSSIGN, 1);
         }
         return (0);
 }
@@ -1954,4 +2001,42 @@ mm_answer_gss_userok(int sock, Buffer *m)
         /* Monitor loop will terminate if authenticated */
         return (authenticated);
 }
+
+int 
+mm_answer_gss_sign(int socket, Buffer *m)
+{
+        gss_buffer_desc data;
+        gss_buffer_desc hash = GSS_C_EMPTY_BUFFER;
+        OM_uint32 major, minor;
+        u_int len;
+
+        data.value = buffer_get_string(m, &len);
+        data.length = len;
+        if (data.length != 20) 
+                fatal("%s: data length incorrect: %d", __func__, data.length);
+
+        /* Save the session ID on the first time around */
+        if (session_id2_len == 0) {
+                session_id2_len = data.length;
+                session_id2 = xmalloc(session_id2_len);
+                memcpy(session_id2, data.value, session_id2_len);
+        }
+        major = ssh_gssapi_sign(gsscontext, &data, &hash);
+
+        xfree(data.value);
+
+        buffer_clear(m);
+        buffer_put_int(m, major);
+        buffer_put_string(m, hash.value, hash.length);
+
+        mm_request_send(socket, MONITOR_ANS_GSSSIGN, m);
+
+        gss_release_buffer(&minor, &hash);
+
+        /* Turn on getpwnam permissions */
+        monitor_permit(mon_dispatch, MONITOR_REQ_PWNAM, 1);
+
+        return (0);
+}
+
 #endif /* GSSAPI */