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5598e598 | 1 | /* |
23987cb8 | 2 | * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved. |
5598e598 | 3 | * |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | */ | |
24 | ||
b59afbfe | 25 | #ifndef _SSH_GSS_H |
26 | #define _SSH_GSS_H | |
27 | ||
5598e598 | 28 | #ifdef GSSAPI |
29 | ||
30 | #include "kex.h" | |
31 | #include "buffer.h" | |
32 | ||
33 | #include <gssapi.h> | |
34 | ||
8f0688f5 | 35 | #ifndef MECHGLUE |
5598e598 | 36 | #ifdef KRB5 |
37 | #ifndef HEIMDAL | |
38 | #include <gssapi_generic.h> | |
39 | ||
40 | /* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */ | |
41 | ||
42 | #ifndef GSS_C_NT_HOSTBASED_SERVICE | |
43 | #define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name | |
44 | #endif /* GSS_C_NT_... */ | |
45 | #endif /* !HEIMDAL */ | |
46 | #endif /* KRB5 */ | |
8f0688f5 | 47 | #endif /* !MECHGLUE */ |
5598e598 | 48 | |
b59afbfe | 49 | /* draft-ietf-secsh-gsskeyex-03 */ |
50 | #define SSH2_MSG_KEXGSS_INIT 30 | |
51 | #define SSH2_MSG_KEXGSS_CONTINUE 31 | |
52 | #define SSH2_MSG_KEXGSS_COMPLETE 32 | |
53 | #define SSH2_MSG_KEXGSS_HOSTKEY 33 | |
54 | #define SSH2_MSG_KEXGSS_ERROR 34 | |
55 | #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60 | |
56 | #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61 | |
5598e598 | 57 | #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63 |
b59afbfe | 58 | #define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64 |
e23e524c | 59 | #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65 |
b59afbfe | 60 | |
61 | #define KEX_GSS_SHA1 "gss-group1-sha1-" | |
5598e598 | 62 | |
23987cb8 | 63 | typedef struct { |
64 | char *filename; | |
65 | char *envvar; | |
66 | char *envval; | |
67 | void *data; | |
68 | } ssh_gssapi_ccache; | |
69 | ||
70 | typedef struct { | |
71 | gss_buffer_desc name; | |
72 | gss_cred_id_t creds; | |
73 | struct ssh_gssapi_mech_struct *mech; | |
74 | ssh_gssapi_ccache store; | |
75 | } ssh_gssapi_client; | |
5598e598 | 76 | |
23987cb8 | 77 | typedef struct ssh_gssapi_mech_struct { |
5598e598 | 78 | char *enc_name; |
79 | char *name; | |
80 | gss_OID_desc oid; | |
23987cb8 | 81 | int (*dochild) (ssh_gssapi_client *); |
82 | int (*userok) (ssh_gssapi_client *, char *); | |
83 | int (*localname) (ssh_gssapi_client *, char **); | |
84 | void (*storecreds) (ssh_gssapi_client *); | |
5598e598 | 85 | } ssh_gssapi_mech; |
86 | ||
23987cb8 | 87 | |
88 | ||
5598e598 | 89 | typedef struct { |
23987cb8 | 90 | OM_uint32 major; /* both */ |
91 | OM_uint32 minor; /* both */ | |
5598e598 | 92 | gss_ctx_id_t context; /* both */ |
93 | gss_name_t name; /* both */ | |
6f9f4dab | 94 | gss_OID oid; /* both */ |
5598e598 | 95 | gss_cred_id_t creds; /* server */ |
96 | gss_name_t client; /* server */ | |
97 | gss_cred_id_t client_creds; /* server */ | |
98 | } Gssctxt; | |
99 | ||
23987cb8 | 100 | extern ssh_gssapi_mech *supported_mechs[]; |
5598e598 | 101 | |
08c2f275 | 102 | char *ssh_gssapi_mechanisms(char *host); |
23987cb8 | 103 | char *ssh_gssapi_client_mechanisms(char *host); |
104 | gss_OID ssh_gssapi_client_id_kex(Gssctxt *ctx, char *name); | |
105 | int ssh_gssapi_check_oid(Gssctxt *ctx, void *data, size_t len); | |
5598e598 | 106 | void ssh_gssapi_set_oid_data(Gssctxt *ctx, void *data, size_t len); |
107 | void ssh_gssapi_set_oid(Gssctxt *ctx, gss_OID oid); | |
108 | void ssh_gssapi_supported_oids(gss_OID_set *oidset); | |
23987cb8 | 109 | ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *ctxt); |
110 | gss_OID ssh_gssapi_id_kex(Gssctxt *ctx, char *name); | |
5598e598 | 111 | |
af6d5f4c | 112 | OM_uint32 ssh_gssapi_import_name(Gssctxt *ctx, const char *host); |
5598e598 | 113 | OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *ctx); |
114 | OM_uint32 ssh_gssapi_init_ctx(Gssctxt *ctx, int deleg_creds, | |
115 | gss_buffer_desc *recv_tok, | |
116 | gss_buffer_desc *send_tok, OM_uint32 *flags); | |
117 | OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *ctx, | |
118 | gss_buffer_desc *recv_tok, | |
119 | gss_buffer_desc *send_tok, | |
120 | OM_uint32 *flags); | |
121 | OM_uint32 ssh_gssapi_getclient(Gssctxt *ctx, | |
23987cb8 | 122 | ssh_gssapi_mech **mech, |
5598e598 | 123 | gss_buffer_desc *name, |
124 | gss_cred_id_t *creds); | |
23987cb8 | 125 | void ssh_gssapi_error(Gssctxt *ctx); |
126 | char *ssh_gssapi_last_error(Gssctxt *ctxt, OM_uint32 *maj, OM_uint32 *min); | |
b59afbfe | 127 | void ssh_gssapi_build_ctx(Gssctxt **ctx); |
128 | void ssh_gssapi_delete_ctx(Gssctxt **ctx); | |
b59afbfe | 129 | OM_uint32 ssh_gssapi_server_ctx(Gssctxt **ctx,gss_OID oid); |
5598e598 | 130 | |
23987cb8 | 131 | int ssh_gssapi_check_mechanism(gss_OID oid, char *host); |
132 | ||
5598e598 | 133 | /* In the server */ |
e23e524c | 134 | gss_OID ssh_gssapi_server_id_kex(char *name); |
b59afbfe | 135 | int ssh_gssapi_userok(char *name); |
e23e524c | 136 | int ssh_gssapi_localname(char **name); |
5598e598 | 137 | void ssh_gssapi_server(Kex *kex, Buffer *client_kexinit, |
138 | Buffer *server_kexinit); | |
b59afbfe | 139 | |
140 | OM_uint32 ssh_gssapi_sign(Gssctxt *ctx, gss_buffer_desc *buffer, | |
141 | gss_buffer_desc *hash); | |
142 | ||
5598e598 | 143 | void ssh_gssapi_do_child(char ***envp, u_int *envsizep); |
144 | void ssh_gssapi_cleanup_creds(void *ignored); | |
145 | void ssh_gssapi_storecreds(); | |
23987cb8 | 146 | char *ssh_gssapi_server_mechanisms(); |
b59afbfe | 147 | |
148 | #ifdef GSI | |
149 | int gsi_gridmap(char *subject_name, char **mapped_name); | |
f9ee7be6 | 150 | #endif |
151 | ||
152 | #ifdef MECHGLUE | |
153 | gss_cred_id_t __gss_get_mechanism_cred | |
154 | (gss_cred_id_t, /* union_cred */ | |
155 | gss_OID /* mech_type */ | |
156 | ); | |
b59afbfe | 157 | #endif |
076a92b0 | 158 | |
5598e598 | 159 | #endif /* GSSAPI */ |
b59afbfe | 160 | |
161 | #endif /* _SSH_GSS_H */ |