2 * Copyright (c) 2001 Simon Wilkinson. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
34 #include <gssapi_generic.h>
36 /* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */
38 #ifndef GSS_C_NT_HOSTBASED_SERVICE
39 #define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
40 #endif /* GSS_C_NT_... */
44 /* draft-ietf-secsh-gsskeyex-01 */
45 #define SSH2_MSG_KEXGSS_INIT 30
46 #define SSH2_MSG_KEXGSS_CONTINUE 31
47 #define SSH2_MSG_KEXGSS_COMPLETE 32
48 #define SSH2_MSG_KEXGSS_HOSTKEY 33
49 #define KEX_GSS_SHA1 "gss-group1-sha1-"
51 /* draft-galb-secsh-gssapi-01 */
52 #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
53 #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
54 #define SSH2_MSG_USERAUTH_GSSAPI_HASH 62
55 #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
67 typedef struct ssh_gss_mech_struct {
74 OM_uint32 status; /* both */
75 gss_ctx_id_t context; /* both */
76 gss_name_t name; /* both */
77 gss_OID oid; /* client */
78 gss_cred_id_t creds; /* server */
79 gss_name_t client; /* server */
80 gss_cred_id_t client_creds; /* server */
83 extern ssh_gssapi_mech supported_mechs[];
84 extern gss_buffer_desc gssapi_client_name;
85 extern gss_cred_id_t gssapi_client_creds;
86 extern enum ssh_gss_id gssapi_client_type;
88 char *ssh_gssapi_mechanisms(int server, char *host);
89 int ssh_gssapi_id_kex(Gssctxt *ctx, char *name);
90 void ssh_gssapi_set_oid_data(Gssctxt *ctx, void *data, size_t len);
91 void ssh_gssapi_set_oid(Gssctxt *ctx, gss_OID oid);
92 void ssh_gssapi_supported_oids(gss_OID_set *oidset);
93 enum ssh_gss_id ssh_gssapi_get_ctype(Gssctxt *ctxt);
95 OM_uint32 ssh_gssapi_import_name(Gssctxt *ctx, const char *host);
96 OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *ctx);
97 OM_uint32 ssh_gssapi_init_ctx(Gssctxt *ctx, int deleg_creds,
98 gss_buffer_desc *recv_tok,
99 gss_buffer_desc *send_tok, OM_uint32 *flags);
100 OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *ctx,
101 gss_buffer_desc *recv_tok,
102 gss_buffer_desc *send_tok,
104 OM_uint32 ssh_gssapi_getclient(Gssctxt *ctx,
105 enum ssh_gss_id *type,
106 gss_buffer_desc *name,
107 gss_cred_id_t *creds);
108 void ssh_gssapi_error(OM_uint32 major_status,OM_uint32 minor_status);
109 void ssh_gssapi_build_ctx(Gssctxt *ctx);
110 void ssh_gssapi_delete_ctx(Gssctxt *ctx);
113 void ssh_gssapi_client(Kex *kex, char *host, struct sockaddr *hostaddr,
114 Buffer *client_kexinit, Buffer *server_kexinit);
117 void ssh_gssapi_server(Kex *kex, Buffer *client_kexinit,
118 Buffer *server_kexinit);
119 void ssh_gssapi_do_child(char ***envp, u_int *envsizep);
120 void ssh_gssapi_cleanup_creds(void *ignored);
121 void ssh_gssapi_storecreds();
122 void ssh_gssapi_clean_env();