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d4af9e693f
I have worked hard to reduce diffs against the vendor branch. One notable change in that respect is that we no longer prefer DSA over RSA - the reasons for doing so went away years ago. This may cause some surprises, as ssh will warn about unknown host keys even for hosts whose keys haven't changed. MFC after: 6 weeks
132 lines
4.4 KiB
C
132 lines
4.4 KiB
C
/* $OpenBSD: ssh-gss.h,v 1.10 2007/06/12 08:20:00 djm Exp $ */
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/*
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* Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SSH_GSS_H
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#define _SSH_GSS_H
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#ifdef GSSAPI
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#ifdef HAVE_GSSAPI_H
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#include <gssapi.h>
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#elif defined(HAVE_GSSAPI_GSSAPI_H)
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#include <gssapi/gssapi.h>
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#endif
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#ifdef KRB5
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# ifndef HEIMDAL
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# ifdef HAVE_GSSAPI_GENERIC_H
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# include <gssapi_generic.h>
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# elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H)
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# include <gssapi/gssapi_generic.h>
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# endif
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/* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */
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#ifndef GSS_C_NT_HOSTBASED_SERVICE
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#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
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#endif /* GSS_C_NT_... */
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#endif /* !HEIMDAL */
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#endif /* KRB5 */
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/* draft-ietf-secsh-gsskeyex-06 */
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#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
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#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
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#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
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#define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64
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#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65
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#define SSH2_MSG_USERAUTH_GSSAPI_MIC 66
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#define SSH_GSS_OIDTYPE 0x06
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typedef struct {
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char *filename;
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char *envvar;
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char *envval;
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void *data;
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} ssh_gssapi_ccache;
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typedef struct {
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gss_buffer_desc displayname;
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gss_buffer_desc exportedname;
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gss_cred_id_t creds;
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struct ssh_gssapi_mech_struct *mech;
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ssh_gssapi_ccache store;
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} ssh_gssapi_client;
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typedef struct ssh_gssapi_mech_struct {
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char *enc_name;
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char *name;
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gss_OID_desc oid;
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int (*dochild) (ssh_gssapi_client *);
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int (*userok) (ssh_gssapi_client *, char *);
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int (*localname) (ssh_gssapi_client *, char **);
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void (*storecreds) (ssh_gssapi_client *);
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} ssh_gssapi_mech;
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typedef struct {
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OM_uint32 major; /* both */
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OM_uint32 minor; /* both */
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gss_ctx_id_t context; /* both */
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gss_name_t name; /* both */
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gss_OID oid; /* client */
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gss_cred_id_t creds; /* server */
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gss_name_t client; /* server */
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gss_cred_id_t client_creds; /* server */
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} Gssctxt;
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extern ssh_gssapi_mech *supported_mechs[];
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int ssh_gssapi_check_oid(Gssctxt *, void *, size_t);
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void ssh_gssapi_set_oid_data(Gssctxt *, void *, size_t);
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void ssh_gssapi_set_oid(Gssctxt *, gss_OID);
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void ssh_gssapi_supported_oids(gss_OID_set *);
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ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *);
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OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *);
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OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int,
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gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
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OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *,
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gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
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OM_uint32 ssh_gssapi_getclient(Gssctxt *, ssh_gssapi_client *);
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void ssh_gssapi_error(Gssctxt *);
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char *ssh_gssapi_last_error(Gssctxt *, OM_uint32 *, OM_uint32 *);
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void ssh_gssapi_build_ctx(Gssctxt **);
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void ssh_gssapi_delete_ctx(Gssctxt **);
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OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
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void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);
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int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *);
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/* In the server */
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OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
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int ssh_gssapi_userok(char *name);
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OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
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void ssh_gssapi_do_child(char ***, u_int *);
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void ssh_gssapi_cleanup_creds(void);
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void ssh_gssapi_storecreds(void);
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#endif /* GSSAPI */
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#endif /* _SSH_GSS_H */
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