OpenSolaris Launch

1 files changed, 169 insertions, 0 deletions

diff --git a/usr/src/cmd/ssh/include/ssh-gss.h b/usr/src/cmd/ssh/include/ssh-gss.h
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+++ b/usr/src/cmd/ssh/include/ssh-gss.h
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+/*
+ * 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.
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SSH_GSS_H
+#define _SSH_GSS_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#ifdef GSSAPI
+
+#include "kex.h"
+#include "buffer.h"
+
+#ifdef SUNW_GSSAPI
+#include <gssapi/gssapi.h>
+#include <gssapi/gssapi_ext.h>
+#else
+#ifdef GSS_KRB5
+#ifndef HEIMDAL
+#include <gssapi_generic.h>
+
+/* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */
+#ifndef GSS_C_NT_HOSTBASED_SERVICE
+#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
+#endif /* GSS_C_NT_... */
+#endif /* !HEIMDAL */
+#endif /* GSS_KRB5 */
+#endif /* SUNW_GSSAPI */
+
+/* draft-ietf-secsh-gsskeyex-03 */
+#define SSH2_MSG_KEXGSS_INIT				30
+#define SSH2_MSG_KEXGSS_CONTINUE 			31
+#define SSH2_MSG_KEXGSS_COMPLETE 			32
+#define SSH2_MSG_KEXGSS_HOSTKEY				33
+#define SSH2_MSG_KEXGSS_ERROR				34
+#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 SSH2_MSG_USERAUTH_GSSAPI_MIC			66
+
+#define KEX_GSS_SHA1					"gss-group1-sha1-"
+#define SSH_GSS_HOSTBASED_SERVICE			"host"
+
+#ifndef HAVE_GSS_STORE_CRED
+typedef struct ssh_gssapi_cred_store ssh_gssapi_cred_store; /* server-only */
+#endif /* !HAVE_GSS_STORE_CRED */
+
+typedef struct {
+	OM_uint32		major;
+	OM_uint32		minor;
+	int			local; /* true on client, false on server */
+	int			established;
+	OM_uint32		flags;
+	gss_ctx_id_t		context;
+	gss_OID			desired_mech;	/* client-side only */
+	gss_OID			actual_mech;
+	gss_name_t		desired_name;   /* targ on both */
+	gss_name_t		src_name;
+	gss_name_t		dst_name;
+	gss_cred_id_t		creds;		/* server-side only */
+	gss_cred_id_t		deleg_creds;	/* server-side only */
+	int			default_creds;	/* server-side only */
+#ifndef HAVE_GSS_STORE_CRED
+	ssh_gssapi_cred_store	*cred_store;	/* server-side only */
+#endif /* !HAVE_GSS_STORE_CRED */
+} Gssctxt;
+
+/* Functions to get supported mech lists */
+void ssh_gssapi_server_mechs(gss_OID_set *mechs);
+void ssh_gssapi_client_mechs(const char *server_host, gss_OID_set *mechs);
+
+/* Functions to get fix KEX proposals (needed for rekey cases) */
+void ssh_gssapi_modify_kex(Kex *kex, gss_OID_set mechs, char **proposal);
+void ssh_gssapi_server_kex_hook(Kex *kex, char **proposal);
+void ssh_gssapi_client_kex_hook(Kex *kex, char **proposal);
+
+/* Map an encoded mechanism keyex name to a mechanism OID */
+void ssh_gssapi_mech_oid_to_kexname(const gss_OID mech, char **kexname);
+void ssh_gssapi_mech_oids_to_kexnames(const gss_OID_set mechs,
+				      char **kexname_list);
+void ssh_gssapi_oid_of_kexname(const char *kexname, gss_OID *mech); /* dup oid? */
+
+/*
+ * Unfortunately, the GSS-API is not generic enough for some things --
+ * see gss-serv.c and ssh-gss.c
+ */
+int  ssh_gssapi_is_spnego(gss_OID oid);
+int  ssh_gssapi_is_krb5(gss_OID oid);
+int  ssh_gssapi_is_gsi(gss_OID oid);
+int  ssh_gssapi_is_dh(gss_OID oid);
+
+/* GSS_Init/Accept_sec_context() and GSS_Acquire_cred() wrappers */
+OM_uint32 ssh_gssapi_init_ctx(Gssctxt *ctx,
+			      const char *server_host,
+			      int deleg_creds,
+			      gss_buffer_t recv_tok,
+			      gss_buffer_t send_tok);   /* client-only */
+OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *ctx,
+				gss_buffer_t recv_tok,
+				gss_buffer_t send_tok); /* server-only */
+OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *ctx);	    /* server-only */
+
+/* MIC wrappers */
+OM_uint32 ssh_gssapi_get_mic(Gssctxt *ctx, gss_buffer_t buffer,
+				gss_buffer_t hash);
+OM_uint32 ssh_gssapi_verify_mic(Gssctxt *ctx, gss_buffer_t buffer,
+				gss_buffer_t hash);
+
+/* Gssctxt functions */
+void	 ssh_gssapi_build_ctx(Gssctxt **ctx, int client, gss_OID mech);
+void	 ssh_gssapi_delete_ctx(Gssctxt **ctx);
+int	 ssh_gssapi_check_mech_oid(Gssctxt *ctx, void *data, size_t len);
+void	 ssh_gssapi_error(Gssctxt *ctx, const char *where);
+char	*ssh_gssapi_last_error(Gssctxt *ctxt, OM_uint32 *maj, OM_uint32 *min);
+
+/* Server-side */
+int	 ssh_gssapi_userok(Gssctxt *ctx, char *name);
+char	*ssh_gssapi_localname(Gssctxt *ctx);
+
+/* Server-side, if PAM and gss_store_cred() are available, ... */
+struct Authctxt; /* needed to avoid conflicts between auth.h, sshconnect2.c */
+void	ssh_gssapi_storecreds(Gssctxt *ctx, struct Authctxt *authctxt);
+
+/* ... else, if other interfaces are available for GSS-API cred storing */
+void	ssh_gssapi_do_child(Gssctxt *ctx, char ***envp, u_int *envsizep);
+void	ssh_gssapi_cleanup_creds(Gssctxt *ctx);
+
+/* Misc */
+int		 ssh_gssapi_import_name(Gssctxt *ctx, const char *server_host);
+const char	*ssh_gssapi_oid_to_name(gss_OID oid);
+char		*ssh_gssapi_oid_to_str(gss_OID oid);
+gss_OID		 ssh_gssapi_dup_oid(gss_OID oid);
+gss_OID		 ssh_gssapi_make_oid(size_t length, void *elements);
+gss_OID		 ssh_gssapi_make_oid_ext(size_t length,
+					 void *elements,
+					 int der_wrapped);
+void		*ssh_gssapi_der_wrap(size_t, size_t *length);
+size_t		 ssh_gssapi_der_wrap_size(size_t, size_t *length);
+void		 ssh_gssapi_release_oid(gss_OID *oid);
+#endif /* GSSAPI */
+
+#endif /* _SSH_GSS_H */