- markus@cvs.openbsd.org 2003/08/22 10:56:09

     [auth2.c auth2-gss.c auth.h compat.c compat.h gss-genr.c gss-serv-krb5.c
     gss-serv.c monitor.c monitor.h monitor_wrap.c monitor_wrap.h readconf.c
     readconf.h servconf.c servconf.h session.c session.h ssh-gss.h
     ssh_config.5 sshconnect2.c sshd_config sshd_config.5]
     support GSS API user authentication; patches from Simon Wilkinson,
     stripped down and tested by Jakob and myself.

1 files changed, 109 insertions, 0 deletions

diff --git a/ssh-gss.h b/ssh-gss.h
new file mode 100644
index 00000000..263e51b9
--- /dev/null
+++ b/ssh-gss.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2001-2003 Simon Wilkinson. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `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 THE AUTHOR 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.
+ */
+
+#ifndef _SSH_GSS_H
+#define _SSH_GSS_H
+
+#ifdef GSSAPI
+
+#include "buffer.h"
+
+#include <gssapi.h>
+
+/* draft-ietf-secsh-gsskeyex-06 */
+#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE		60
+#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN			61
+#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE	63
+#define SSH2_MSG_USERAUTH_GSSAPI_ERROR			64
+#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK			65
+
+#define SSH_GSS_OIDTYPE 0x06
+
+typedef struct {
+	char *filename;
+	char *envvar;
+	char *envval;
+	void *data;
+} ssh_gssapi_ccache;
+
+typedef struct {
+	gss_buffer_desc displayname;
+	gss_buffer_desc exportedname;
+	gss_cred_id_t creds;
+	struct ssh_gssapi_mech_struct *mech;
+	ssh_gssapi_ccache store;
+} ssh_gssapi_client;
+
+typedef struct ssh_gssapi_mech_struct {
+	char *enc_name;
+	char *name;
+	gss_OID_desc oid;
+	int (*dochild) (ssh_gssapi_client *);
+	int (*userok) (ssh_gssapi_client *, char *);
+	int (*localname) (ssh_gssapi_client *, char **);
+	void (*storecreds) (ssh_gssapi_client *);
+} ssh_gssapi_mech;
+
+typedef struct {
+	OM_uint32	major; /* both */
+	OM_uint32	minor; /* both */
+	gss_ctx_id_t	context; /* both */
+	gss_name_t	name; /* both */
+	gss_OID		oid; /* client */
+	gss_cred_id_t	creds; /* server */
+	gss_name_t	client; /* server */
+	gss_cred_id_t	client_creds; /* server */
+} Gssctxt;
+
+extern ssh_gssapi_mech *supported_mechs[];
+
+int  ssh_gssapi_check_oid(Gssctxt *ctx, void *data, size_t len);
+void ssh_gssapi_set_oid_data(Gssctxt *ctx, void *data, size_t len);
+void ssh_gssapi_set_oid(Gssctxt *ctx, gss_OID oid);
+void ssh_gssapi_supported_oids(gss_OID_set *oidset);
+ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *ctxt);
+
+OM_uint32 ssh_gssapi_import_name(Gssctxt *ctx, const char *host);
+OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *ctx);
+OM_uint32 ssh_gssapi_init_ctx(Gssctxt *ctx, int deleg_creds,
+    gss_buffer_desc *recv_tok, gss_buffer_desc *send_tok, OM_uint32 *flags);
+OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *ctx,
+    gss_buffer_desc *recv_tok, gss_buffer_desc *send_tok, OM_uint32 *flags);
+OM_uint32 ssh_gssapi_getclient(Gssctxt *ctx, ssh_gssapi_client *);
+void ssh_gssapi_error(Gssctxt *ctx);
+char *ssh_gssapi_last_error(Gssctxt *ctxt, OM_uint32 *maj, OM_uint32 *min);
+void ssh_gssapi_build_ctx(Gssctxt **ctx);
+void ssh_gssapi_delete_ctx(Gssctxt **ctx);
+OM_uint32 ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID oid);
+
+/* In the server */
+int ssh_gssapi_userok(char *name);
+
+void ssh_gssapi_do_child(char ***envp, u_int *envsizep);
+void ssh_gssapi_cleanup_creds(void *ignored);
+void ssh_gssapi_storecreds(void);
+
+#endif /* GSSAPI */
+
+#endif /* _SSH_GSS_H */