1 /* $OpenBSD: ssh-gss.h,v 1.5 2004/06/21 17:36:31 avsm Exp $ */ 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 31 #include "buffer.h" 32 33 #include <gssapi.h> 34 35 /* draft-ietf-secsh-gsskeyex-06 */ 36 #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60 37 #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61 38 #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63 39 #define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64 40 #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65 41 #define SSH2_MSG_USERAUTH_GSSAPI_MIC 66 42 43 #define SSH_GSS_OIDTYPE 0x06 44 45 typedef struct { 46 char *filename; 47 char *envvar; 48 char *envval; 49 void *data; 50 } ssh_gssapi_ccache; 51 52 typedef struct { 53 gss_buffer_desc displayname; 54 gss_buffer_desc exportedname; 55 gss_cred_id_t creds; 56 struct ssh_gssapi_mech_struct *mech; 57 ssh_gssapi_ccache store; 58 } ssh_gssapi_client; 59 60 typedef struct ssh_gssapi_mech_struct { 61 char *enc_name; 62 char *name; 63 gss_OID_desc oid; 64 int (*dochild) (ssh_gssapi_client *); 65 int (*userok) (ssh_gssapi_client *, char *); 66 int (*localname) (ssh_gssapi_client *, char **); 67 void (*storecreds) (ssh_gssapi_client *); 68 } ssh_gssapi_mech; 69 70 typedef struct { 71 OM_uint32 major; /* both */ 72 OM_uint32 minor; /* both */ 73 gss_ctx_id_t context; /* both */ 74 gss_name_t name; /* both */ 75 gss_OID oid; /* client */ 76 gss_cred_id_t creds; /* server */ 77 gss_name_t client; /* server */ 78 gss_cred_id_t client_creds; /* server */ 79 } Gssctxt; 80 81 extern ssh_gssapi_mech *supported_mechs[]; 82 83 int ssh_gssapi_check_oid(Gssctxt *, void *, size_t); 84 void ssh_gssapi_set_oid_data(Gssctxt *, void *, size_t); 85 void ssh_gssapi_set_oid(Gssctxt *, gss_OID); 86 void ssh_gssapi_supported_oids(gss_OID_set *); 87 ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *); 88 89 OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *); 90 OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *); 91 OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int, 92 gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *); 93 OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *, 94 gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *); 95 OM_uint32 ssh_gssapi_getclient(Gssctxt *, ssh_gssapi_client *); 96 void ssh_gssapi_error(Gssctxt *); 97 char *ssh_gssapi_last_error(Gssctxt *, OM_uint32 *, OM_uint32 *); 98 void ssh_gssapi_build_ctx(Gssctxt **); 99 void ssh_gssapi_delete_ctx(Gssctxt **); 100 OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t); 101 OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID); 102 void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *); 103 104 /* In the server */ 105 int ssh_gssapi_userok(char *name); 106 OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t); 107 void ssh_gssapi_do_child(char ***, u_int *); 108 void ssh_gssapi_cleanup_creds(void); 109 void ssh_gssapi_storecreds(void); 110 111 #endif /* GSSAPI */ 112 113 #endif /* _SSH_GSS_H */ 114