mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-11-30 18:03:32 +08:00
e6a74aeeac
[auth2-gss.c gss-serv.c ssh-gss.h sshd.c]
bz#2107 - cache OIDs of supported GSSAPI mechanisms before privsep
sandboxing, as running this code in the sandbox can cause violations;
ok markus@
135 lines
4.6 KiB
C
135 lines
4.6 KiB
C
/* $OpenBSD: ssh-gss.h,v 1.11 2014/02/26 20:28:44 djm Exp $ */
|
|
/*
|
|
* Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _SSH_GSS_H
|
|
#define _SSH_GSS_H
|
|
|
|
#ifdef GSSAPI
|
|
|
|
#ifdef HAVE_GSSAPI_H
|
|
#include <gssapi.h>
|
|
#elif defined(HAVE_GSSAPI_GSSAPI_H)
|
|
#include <gssapi/gssapi.h>
|
|
#endif
|
|
|
|
#ifdef KRB5
|
|
# ifndef HEIMDAL
|
|
# ifdef HAVE_GSSAPI_GENERIC_H
|
|
# include <gssapi_generic.h>
|
|
# elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H)
|
|
# include <gssapi/gssapi_generic.h>
|
|
# endif
|
|
|
|
/* Old MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */
|
|
|
|
# if !HAVE_DECL_GSS_C_NT_HOSTBASED_SERVICE
|
|
# define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
|
|
# endif /* !HAVE_DECL_GSS_C_NT_... */
|
|
|
|
# endif /* !HEIMDAL */
|
|
#endif /* KRB5 */
|
|
|
|
/* draft-ietf-secsh-gsskeyex-06 */
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_MIC 66
|
|
|
|
#define SSH_GSS_OIDTYPE 0x06
|
|
|
|
typedef struct {
|
|
char *filename;
|
|
char *envvar;
|
|
char *envval;
|
|
void *data;
|
|
} ssh_gssapi_ccache;
|
|
|
|
typedef struct {
|
|
gss_buffer_desc displayname;
|
|
gss_buffer_desc exportedname;
|
|
gss_cred_id_t creds;
|
|
struct ssh_gssapi_mech_struct *mech;
|
|
ssh_gssapi_ccache store;
|
|
} ssh_gssapi_client;
|
|
|
|
typedef struct ssh_gssapi_mech_struct {
|
|
char *enc_name;
|
|
char *name;
|
|
gss_OID_desc oid;
|
|
int (*dochild) (ssh_gssapi_client *);
|
|
int (*userok) (ssh_gssapi_client *, char *);
|
|
int (*localname) (ssh_gssapi_client *, char **);
|
|
void (*storecreds) (ssh_gssapi_client *);
|
|
} ssh_gssapi_mech;
|
|
|
|
typedef struct {
|
|
OM_uint32 major; /* both */
|
|
OM_uint32 minor; /* both */
|
|
gss_ctx_id_t context; /* both */
|
|
gss_name_t name; /* both */
|
|
gss_OID oid; /* client */
|
|
gss_cred_id_t creds; /* server */
|
|
gss_name_t client; /* server */
|
|
gss_cred_id_t client_creds; /* server */
|
|
} Gssctxt;
|
|
|
|
extern ssh_gssapi_mech *supported_mechs[];
|
|
|
|
int ssh_gssapi_check_oid(Gssctxt *, void *, size_t);
|
|
void ssh_gssapi_set_oid_data(Gssctxt *, void *, size_t);
|
|
void ssh_gssapi_set_oid(Gssctxt *, gss_OID);
|
|
void ssh_gssapi_supported_oids(gss_OID_set *);
|
|
ssh_gssapi_mech *ssh_gssapi_get_ctype(Gssctxt *);
|
|
void ssh_gssapi_prepare_supported_oids(void);
|
|
OM_uint32 ssh_gssapi_test_oid_supported(OM_uint32 *, gss_OID, int *);
|
|
|
|
OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *);
|
|
OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int,
|
|
gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
|
|
OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *,
|
|
gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
|
|
OM_uint32 ssh_gssapi_getclient(Gssctxt *, ssh_gssapi_client *);
|
|
void ssh_gssapi_error(Gssctxt *);
|
|
char *ssh_gssapi_last_error(Gssctxt *, OM_uint32 *, OM_uint32 *);
|
|
void ssh_gssapi_build_ctx(Gssctxt **);
|
|
void ssh_gssapi_delete_ctx(Gssctxt **);
|
|
OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
|
|
void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);
|
|
int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *);
|
|
|
|
/* In the server */
|
|
OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
|
|
int ssh_gssapi_userok(char *name);
|
|
OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
|
|
void ssh_gssapi_do_child(char ***, u_int *);
|
|
void ssh_gssapi_cleanup_creds(void);
|
|
void ssh_gssapi_storecreds(void);
|
|
|
|
#endif /* GSSAPI */
|
|
|
|
#endif /* _SSH_GSS_H */
|