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9108f8d9 | 1 | /* $OpenBSD: ssh-gss.h,v 1.9 2006/08/18 14:40:34 djm Exp $ */ |
0fff78ff | 2 | /* |
3 | * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
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. | |
13 | * | |
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. | |
24 | */ | |
25 | ||
26 | #ifndef _SSH_GSS_H | |
27 | #define _SSH_GSS_H | |
28 | ||
29 | #ifdef GSSAPI | |
30 | ||
cdd66111 | 31 | #ifdef HAVE_GSSAPI_H |
0fff78ff | 32 | #include <gssapi.h> |
cdd66111 | 33 | #elif defined(HAVE_GSSAPI_GSSAPI_H) |
34 | #include <gssapi/gssapi.h> | |
35 | #endif | |
0fff78ff | 36 | |
37 | #ifdef KRB5 | |
cdd66111 | 38 | # ifndef HEIMDAL |
39 | # ifdef HAVE_GSSAPI_GENERIC_H | |
40 | # include <gssapi_generic.h> | |
41 | # elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H) | |
42 | # include <gssapi/gssapi_generic.h> | |
43 | # endif | |
0fff78ff | 44 | |
45 | /* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */ | |
46 | ||
47 | #ifndef GSS_C_NT_HOSTBASED_SERVICE | |
48 | #define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name | |
49 | #endif /* GSS_C_NT_... */ | |
50 | #endif /* !HEIMDAL */ | |
51 | #endif /* KRB5 */ | |
52 | ||
53 | /* draft-ietf-secsh-gsskeyex-06 */ | |
54 | #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60 | |
55 | #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61 | |
56 | #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63 | |
57 | #define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64 | |
58 | #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65 | |
cdd66111 | 59 | #define SSH2_MSG_USERAUTH_GSSAPI_MIC 66 |
0fff78ff | 60 | |
61 | #define SSH_GSS_OIDTYPE 0x06 | |
62 | ||
659bdb8e | 63 | #define SSH2_MSG_KEXGSS_INIT 30 |
64 | #define SSH2_MSG_KEXGSS_CONTINUE 31 | |
65 | #define SSH2_MSG_KEXGSS_COMPLETE 32 | |
66 | #define SSH2_MSG_KEXGSS_HOSTKEY 33 | |
67 | #define SSH2_MSG_KEXGSS_ERROR 34 | |
68 | #define SSH2_MSG_KEXGSS_GROUPREQ 40 | |
69 | #define SSH2_MSG_KEXGSS_GROUP 41 | |
70 | #define KEX_GSS_GRP1_SHA1_ID "gss-group1-sha1-" | |
71 | #define KEX_GSS_GRP14_SHA1_ID "gss-group14-sha1-" | |
72 | #define KEX_GSS_GEX_SHA1_ID "gss-gex-sha1-" | |
73 | ||
0fff78ff | 74 | typedef struct { |
75 | char *filename; | |
76 | char *envvar; | |
77 | char *envval; | |
78 | void *data; | |
79 | } ssh_gssapi_ccache; | |
80 | ||
81 | typedef struct { | |
82 | gss_buffer_desc displayname; | |
83 | gss_buffer_desc exportedname; | |
84 | gss_cred_id_t creds; | |
85 | struct ssh_gssapi_mech_struct *mech; | |
86 | ssh_gssapi_ccache store; | |
87 | } ssh_gssapi_client; | |
88 | ||
89 | typedef struct ssh_gssapi_mech_struct { | |
90 | char *enc_name; | |
91 | char *name; | |
92 | gss_OID_desc oid; | |
93 | int (*dochild) (ssh_gssapi_client *); | |
94 | int (*userok) (ssh_gssapi_client *, char *); | |
95 | int (*localname) (ssh_gssapi_client *, char **); | |
96 | void (*storecreds) (ssh_gssapi_client *); | |
97 | } ssh_gssapi_mech; | |
98 | ||
99 | typedef struct { | |
100 | OM_uint32 major; /* both */ | |
101 | OM_uint32 minor; /* both */ | |
102 | gss_ctx_id_t context; /* both */ | |
103 | gss_name_t name; /* both */ | |
104 | gss_OID oid; /* client */ | |
105 | gss_cred_id_t creds; /* server */ | |
106 | gss_name_t client; /* server */ | |
107 | gss_cred_id_t client_creds; /* server */ | |
108 | } Gssctxt; | |
109 | ||
110 | extern ssh_gssapi_mech *supported_mechs[]; | |
659bdb8e | 111 | extern Gssctxt *gss_kex_context; |
0fff78ff | 112 | |
c9f39d2c | 113 | int ssh_gssapi_check_oid(Gssctxt *, void *, size_t); |
114 | void ssh_gssapi_set_oid_data(Gssctxt *, void *, size_t); | |
115 | void ssh_gssapi_set_oid(Gssctxt *, gss_OID); | |
116 | void ssh_gssapi_supported_oids(gss_OID_set *); | |
117 | ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *); | |
118 | ||
119 | OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *); | |
120 | OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *); | |
121 | OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int, | |
122 | gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *); | |
123 | OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *, | |
124 | gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *); | |
125 | OM_uint32 ssh_gssapi_getclient(Gssctxt *, ssh_gssapi_client *); | |
126 | void ssh_gssapi_error(Gssctxt *); | |
127 | char *ssh_gssapi_last_error(Gssctxt *, OM_uint32 *, OM_uint32 *); | |
128 | void ssh_gssapi_build_ctx(Gssctxt **); | |
129 | void ssh_gssapi_delete_ctx(Gssctxt **); | |
cdd66111 | 130 | OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t); |
c9f39d2c | 131 | OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID); |
cdd66111 | 132 | void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *); |
9108f8d9 | 133 | int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *); |
0fff78ff | 134 | |
135 | /* In the server */ | |
659bdb8e | 136 | typedef int ssh_gssapi_check_fn(Gssctxt **, gss_OID, const char *); |
137 | char *ssh_gssapi_client_mechanisms(const char *host); | |
138 | char *ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn *, const char *); | |
139 | gss_OID ssh_gssapi_id_kex(Gssctxt *, char *, int); | |
140 | int ssh_gssapi_server_check_mech(Gssctxt **,gss_OID, const char *); | |
0fff78ff | 141 | int ssh_gssapi_userok(char *name); |
cdd66111 | 142 | OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t); |
c9f39d2c | 143 | void ssh_gssapi_do_child(char ***, u_int *); |
cdd66111 | 144 | void ssh_gssapi_cleanup_creds(void); |
0fff78ff | 145 | void ssh_gssapi_storecreds(void); |
146 | ||
659bdb8e | 147 | char *ssh_gssapi_server_mechanisms(void); |
148 | int ssh_gssapi_oid_table_ok(); | |
0fff78ff | 149 | #endif /* GSSAPI */ |
150 | ||
151 | #endif /* _SSH_GSS_H */ |