X-Git-Url: http://www.project-moonshot.org/gitweb/?p=openssh.git;a=blobdiff_plain;f=monitor.c;h=a05a4bc871e95644df9d6dcd1ce716795b154fa0;hp=29d987c70fdc243ea3038e463720aa5f51f9554e;hb=991c385d7c6b1c8592b4057bf2e0708ddf9854e9;hpb=0bf87176543b3874dfd9e1a2ad928fe78388669d

diff --git a/monitor.c b/monitor.c
index 29d987c..a05a4bc 100644
--- a/monitor.c
+++ b/monitor.c
@@ -171,7 +171,9 @@ int mm_answer_pam_free_ctx(int, Buffer *);
 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_localname(int, Buffer *);
 int mm_answer_gss_checkmic(int, Buffer *);
+int mm_answer_gss_sign(int, Buffer *);
 #endif
 
 #ifdef SSH_AUDIT_EVENTS
@@ -211,12 +213,12 @@ struct mon_table {
 struct mon_table mon_dispatch_proto20[] = {
     {MONITOR_REQ_MODULI, MON_ONCE, mm_answer_moduli},
     {MONITOR_REQ_SIGN, MON_ONCE, mm_answer_sign},
-    {MONITOR_REQ_PWNAM, MON_ONCE, mm_answer_pwnamallow},
+    {MONITOR_REQ_PWNAM, MON_AUTH, mm_answer_pwnamallow},
     {MONITOR_REQ_AUTHSERV, MON_ONCE, mm_answer_authserv},
     {MONITOR_REQ_AUTH2_READ_BANNER, MON_ONCE, mm_answer_auth2_read_banner},
     {MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
 #ifdef USE_PAM
-    {MONITOR_REQ_PAM_START, MON_ONCE, mm_answer_pam_start},
+    {MONITOR_REQ_PAM_START, MON_ISAUTH, mm_answer_pam_start},
     {MONITOR_REQ_PAM_ACCOUNT, 0, mm_answer_pam_account},
     {MONITOR_REQ_PAM_INIT_CTX, MON_ISAUTH, mm_answer_pam_init_ctx},
     {MONITOR_REQ_PAM_QUERY, MON_ISAUTH, mm_answer_pam_query},
@@ -240,7 +242,9 @@ struct mon_table mon_dispatch_proto20[] = {
     {MONITOR_REQ_GSSSETUP, MON_ISAUTH, mm_answer_gss_setup_ctx},
     {MONITOR_REQ_GSSSTEP, MON_ISAUTH, mm_answer_gss_accept_ctx},
     {MONITOR_REQ_GSSUSEROK, MON_AUTH, mm_answer_gss_userok},
+    {MONITOR_REQ_GSSLOCALNAME, MON_ISAUTH, mm_answer_gss_localname},
     {MONITOR_REQ_GSSCHECKMIC, MON_ISAUTH, mm_answer_gss_checkmic},
+    {MONITOR_REQ_GSSSIGN, MON_ONCE, mm_answer_gss_sign},
 #endif
 #ifdef JPAKE
     {MONITOR_REQ_JPAKE_GET_PWDATA, MON_ONCE, mm_answer_jpake_get_pwdata},
@@ -253,6 +257,11 @@ struct mon_table mon_dispatch_proto20[] = {
 };
 
 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},
@@ -357,6 +366,10 @@ 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;
 
@@ -443,6 +456,10 @@ 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);
@@ -635,13 +652,11 @@ mm_answer_pwnamallow(int sock, Buffer *m)
 
 	debug3("%s", __func__);
 
-	if (authctxt->attempt++ != 0)
-		fatal("%s: multiple attempts for getpwnam", __func__);
-
 	username = buffer_get_string(m, NULL);
 
 	pwent = getpwnamallow(username);
 
+	if (authctxt->user) xfree(authctxt->user);
 	authctxt->user = xstrdup(username);
 	setproctitle("%s [priv]", pwent ? username : "unknown");
 	xfree(username);
@@ -1692,6 +1707,13 @@ mm_get_kex(Buffer *m)
 	kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;
 	kex->kex[KEX_DH_GEX_SHA256] = kexgex_server;
 	kex->kex[KEX_ECDH_SHA2] = kexecdh_server;
+#ifdef GSSAPI
+	if (options.gss_keyex) {
+		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);
@@ -1898,6 +1920,9 @@ mm_answer_gss_setup_ctx(int sock, Buffer *m)
 	OM_uint32 major;
 	u_int len;
 
+	if (!options.gss_authentication && !options.gss_keyex)
+		fatal("In GSSAPI monitor when GSSAPI is disabled");
+
 	goid.elements = buffer_get_string(m, &len);
 	goid.length = len;
 
@@ -1925,6 +1950,9 @@ mm_answer_gss_accept_ctx(int sock, Buffer *m)
 	OM_uint32 flags = 0; /* GSI needs this */
 	u_int len;
 
+	if (!options.gss_authentication && !options.gss_keyex)
+		fatal("In GSSAPI monitor when GSSAPI is disabled");
+
 	in.value = buffer_get_string(m, &len);
 	in.length = len;
 	major = ssh_gssapi_accept_ctx(gsscontext, &in, &out, &flags);
@@ -1942,6 +1970,7 @@ 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);
 }
@@ -1953,6 +1982,9 @@ mm_answer_gss_checkmic(int sock, Buffer *m)
 	OM_uint32 ret;
 	u_int len;
 
+	if (!options.gss_authentication && !options.gss_keyex)
+		fatal("In GSSAPI monitor when GSSAPI is disabled");
+
 	gssbuf.value = buffer_get_string(m, &len);
 	gssbuf.length = len;
 	mic.value = buffer_get_string(m, &len);
@@ -1979,7 +2011,11 @@ mm_answer_gss_userok(int sock, Buffer *m)
 {
 	int authenticated;
 
-	authenticated = authctxt->valid && ssh_gssapi_userok(authctxt->user);
+	if (!options.gss_authentication && !options.gss_keyex)
+		fatal("In GSSAPI monitor when GSSAPI is disabled");
+
+	authenticated = authctxt->valid && 
+	    ssh_gssapi_userok(authctxt->user, authctxt->pw);
 
 	buffer_clear(m);
 	buffer_put_int(m, authenticated);
@@ -1992,6 +2028,72 @@ mm_answer_gss_userok(int sock, Buffer *m)
 	/* Monitor loop will terminate if authenticated */
 	return (authenticated);
 }
+
+int
+mm_answer_gss_localname(int socket, Buffer *m) {
+	char *name;
+
+	ssh_gssapi_localname(&name);
+
+    buffer_clear(m);
+	if (name) {
+	    buffer_put_cstring(m, name);
+	    debug3("%s: sending result %s", __func__, name);
+	    xfree(name);
+	} else {
+	    buffer_put_cstring(m, "");
+	    debug3("%s: sending result \"\"", __func__);
+	}
+
+    mm_request_send(socket, MONITOR_ANS_GSSLOCALNAME, m);
+
+    return(0);
+}
+
+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;
+
+	if (!options.gss_authentication && !options.gss_keyex)
+		fatal("In GSSAPI monitor when GSSAPI is disabled");
+
+	data.value = buffer_get_string(m, &len);
+	data.length = len;
+	if (data.length != 20) 
+		fatal("%s: data length incorrect: %d", __func__, 
+		    (int) 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);
+	
+	/* And credential updating, for when rekeying */
+	monitor_permit(mon_dispatch, MONITOR_REQ_GSSUPCREDS, 1);
+
+	return (0);
+}
+
 #endif /* GSSAPI */
 
 #ifdef JPAKE