crypto/external/bsd/openssh/dist/ssh-gss.h

   1 /*      $NetBSD$        */
   2 /* $OpenBSD: ssh-gss.h,v 1.10 2007/06/12 08:20:00 djm Exp $ */
   3 /*
   4  * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef _SSH_GSS_H
  28 #define _SSH_GSS_H
  29
  30 #ifdef GSSAPI
  31
  32 #include <gssapi.h>
  33
  34 /* draft-ietf-secsh-gsskeyex-06 */
  35 #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE               60
  36 #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN                  61
  37 #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE      63
  38 #define SSH2_MSG_USERAUTH_GSSAPI_ERROR                  64
  39 #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK                 65
  40 #define SSH2_MSG_USERAUTH_GSSAPI_MIC                    66
  41
  42 #define SSH_GSS_OIDTYPE 0x06
  43
  44 typedef struct {
  45         char *filename;
  46         char *envvar;
  47         char *envval;
  48         void *data;
  49 } ssh_gssapi_ccache;
  50
  51 typedef struct {
  52         gss_buffer_desc displayname;
  53         gss_buffer_desc exportedname;
  54         gss_cred_id_t creds;
  55         struct ssh_gssapi_mech_struct *mech;
  56         ssh_gssapi_ccache store;
  57 } ssh_gssapi_client;
  58
  59 typedef struct ssh_gssapi_mech_struct {
  60         char *enc_name;
  61         char *name;
  62         gss_OID_desc oid;
  63         int (*dochild) (ssh_gssapi_client *);
  64         int (*userok) (ssh_gssapi_client *, char *);
  65         int (*localname) (ssh_gssapi_client *, char **);
  66         void (*storecreds) (ssh_gssapi_client *);
  67 } ssh_gssapi_mech;
  68
  69 typedef struct {
  70         OM_uint32       major; /* both */
  71         OM_uint32       minor; /* both */
  72         gss_ctx_id_t    context; /* both */
  73         gss_name_t      name; /* both */
  74         gss_OID         oid; /* client */
  75         gss_cred_id_t   creds; /* server */
  76         gss_name_t      client; /* server */
  77         gss_cred_id_t   client_creds; /* server */
  78 } Gssctxt;
  79
  80 extern ssh_gssapi_mech *supported_mechs[];
  81
  82 int  ssh_gssapi_check_oid(Gssctxt *, void *, size_t);
  83 void ssh_gssapi_set_oid_data(Gssctxt *, void *, size_t);
  84 void ssh_gssapi_set_oid(Gssctxt *, gss_OID);
  85 void ssh_gssapi_supported_oids(gss_OID_set *);
  86 ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *);
  87
  88 OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *);
  89 OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int,
  90     gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
  91 OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *,
  92     gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
  93 OM_uint32 ssh_gssapi_getclient(Gssctxt *, ssh_gssapi_client *);
  94 void ssh_gssapi_error(Gssctxt *);
  95 char *ssh_gssapi_last_error(Gssctxt *, OM_uint32 *, OM_uint32 *);
  96 void ssh_gssapi_build_ctx(Gssctxt **);
  97 void ssh_gssapi_delete_ctx(Gssctxt **);
  98 OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
  99 void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);
 100 int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *);
 101
 102 /* In the server */
 103 OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
 104 int ssh_gssapi_userok(char *name);
 105 OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
 106 void ssh_gssapi_do_child(char ***, u_int *);
 107 void ssh_gssapi_cleanup_creds(void);
 108 void ssh_gssapi_storecreds(void);
 109
 110 #endif /* GSSAPI */
 111
 112 #endif /* _SSH_GSS_H */