1 /* $OpenBSD: ssh-gss.h,v 1.10 2007/06/12 08:20:00 djm Exp $ */
3 * Copyright (c) 2001-2009 Simon Wilkinson. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #elif defined(HAVE_GSSAPI_GSSAPI_H)
34 #include <gssapi/gssapi.h>
36 #ifdef HAVE_GSSAPI_GSSAPI_EXT_H
37 #include <gssapi/gssapi_ext.h>
42 # ifdef HAVE_GSSAPI_GENERIC_H
43 # include <gssapi_generic.h>
44 # elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H)
45 # include <gssapi/gssapi_generic.h>
48 /* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */
50 #ifndef GSS_C_NT_HOSTBASED_SERVICE
51 #define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
52 #endif /* GSS_C_NT_... */
56 /* draft-ietf-secsh-gsskeyex-06 */
57 #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
58 #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
59 #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
60 #define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64
61 #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65
62 #define SSH2_MSG_USERAUTH_GSSAPI_MIC 66
64 #define SSH_GSS_OIDTYPE 0x06
66 #define SSH2_MSG_KEXGSS_INIT 30
67 #define SSH2_MSG_KEXGSS_CONTINUE 31
68 #define SSH2_MSG_KEXGSS_COMPLETE 32
69 #define SSH2_MSG_KEXGSS_HOSTKEY 33
70 #define SSH2_MSG_KEXGSS_ERROR 34
71 #define SSH2_MSG_KEXGSS_GROUPREQ 40
72 #define SSH2_MSG_KEXGSS_GROUP 41
73 #define KEX_GSS_GRP1_SHA1_ID "gss-group1-sha1-"
74 #define KEX_GSS_GRP14_SHA1_ID "gss-group14-sha1-"
75 #define KEX_GSS_GEX_SHA1_ID "gss-gex-sha1-"
87 gss_buffer_desc displayname;
88 gss_buffer_desc exportedname;
90 gss_name_t cred_name, ctx_name;
91 struct ssh_gssapi_mech_struct *mech;
92 ssh_gssapi_ccache store;
97 typedef struct ssh_gssapi_mech_struct {
101 int (*dochild) (ssh_gssapi_client *);
102 int (*userok) (ssh_gssapi_client *, char *);
103 int (*localname) (ssh_gssapi_client *, char **);
104 void (*storecreds) (ssh_gssapi_client *);
105 int (*updatecreds) (ssh_gssapi_ccache *, ssh_gssapi_client *);
109 OM_uint32 major; /* both */
110 OM_uint32 minor; /* both */
111 gss_ctx_id_t context; /* both */
112 gss_name_t name; /* both */
113 gss_OID oid; /* both */
114 gss_cred_id_t creds; /* server */
115 gss_name_t client; /* server */
116 gss_cred_id_t client_creds; /* both */
119 extern ssh_gssapi_mech *supported_mechs[];
120 extern Gssctxt *gss_kex_context;
122 int ssh_gssapi_check_oid(Gssctxt *, void *, size_t);
123 void ssh_gssapi_set_oid_data(Gssctxt *, void *, size_t);
124 void ssh_gssapi_set_oid(Gssctxt *, gss_OID);
125 void ssh_gssapi_supported_oids(gss_OID_set *);
126 ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *);
128 OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *);
129 OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int,
130 gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
131 OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *,
132 gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
133 OM_uint32 ssh_gssapi_getclient(Gssctxt *, ssh_gssapi_client *);
134 void ssh_gssapi_error(Gssctxt *);
135 char *ssh_gssapi_last_error(Gssctxt *, OM_uint32 *, OM_uint32 *);
136 void ssh_gssapi_build_ctx(Gssctxt **);
137 void ssh_gssapi_delete_ctx(Gssctxt **);
138 OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
139 void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);
140 int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *, const char *);
141 OM_uint32 ssh_gssapi_client_identity(Gssctxt *, const char *);
142 int ssh_gssapi_credentials_updated(Gssctxt *);
145 typedef int ssh_gssapi_check_fn(Gssctxt **, gss_OID, const char *,
147 char *ssh_gssapi_client_mechanisms(const char *, const char *);
148 char *ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn *, const char *,
150 gss_OID ssh_gssapi_id_kex(Gssctxt *, char *, int);
151 int ssh_gssapi_server_check_mech(Gssctxt **,gss_OID, const char *,
153 OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
154 int ssh_gssapi_userok(char *name, struct passwd *);
155 OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
156 void ssh_gssapi_do_child(char ***, u_int *);
157 void ssh_gssapi_cleanup_creds(void);
158 void ssh_gssapi_storecreds(void);
160 char *ssh_gssapi_server_mechanisms(void);
161 int ssh_gssapi_oid_table_ok();
163 int ssh_gssapi_update_creds(ssh_gssapi_ccache *store);
166 #endif /* _SSH_GSS_H */