[gssapi-openssh.git] / openssh / ssh-gss.h

/*	$OpenBSD: ssh-gss.h,v 1.5 2004/06/21 17:36:31 avsm 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

#include "buffer.h"

#ifdef HAVE_GSSAPI_H
#include <gssapi.h>
#elif defined(HAVE_GSSAPI_GSSAPI_H)
#include <gssapi/gssapi.h>
#endif

#ifndef MECHGLUE
#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

/* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */

#ifndef GSS_C_NT_HOSTBASED_SERVICE
#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
#endif /* GSS_C_NT_... */
#endif /* !HEIMDAL */
#endif /* KRB5 */
#endif /* !MECHGLUE */

/* 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

#define SSH2_MSG_KEXGSS_INIT                           30
#define SSH2_MSG_KEXGSS_CONTINUE                       31
#define SSH2_MSG_KEXGSS_COMPLETE                       32
#define SSH2_MSG_KEXGSS_HOSTKEY                                33
#define SSH2_MSG_KEXGSS_ERROR                          34
#define SSH2_MSG_KEXGSS_GROUPREQ			40
#define SSH2_MSG_KEXGSS_GROUP				41
#define KEX_GSS_GRP1_SHA1_ID				"gss-group1-sha1-"
#define KEX_GSS_GEX_SHA1_ID				"gss-gex-sha1-"

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; /* both */
	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[];
extern Gssctxt *gss_kex_context;

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 *);

OM_uint32 ssh_gssapi_import_name(Gssctxt *, const char *);
OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *);
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);
OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);

int ssh_gssapi_localname(char **name);

typedef int ssh_gssapi_check_fn(gss_OID, void *);
char *ssh_gssapi_client_mechanisms(const char *host);
char *ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn *, void *);
int ssh_gssapi_check_mechanism(gss_OID, void *);
gss_OID ssh_gssapi_id_kex(Gssctxt *, char *, int *);

int ssh_gssapi_server_check_mech(gss_OID, void *);
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);
char * ssh_gssapi_server_mechanisms(void);
int ssh_gssapi_oid_table_ok();

#ifdef MECHGLUE
gss_cred_id_t __gss_get_mechanism_cred
   (gss_cred_id_t,	/* union_cred */
    gss_OID		/* mech_type */
   );
#endif

#endif /* GSSAPI */

#endif /* _SSH_GSS_H */
Commit	Line	Data
7e82606e	1	/* $OpenBSD: ssh-gss.h,v 1.5 2004/06/21 17:36:31 avsm Exp $ */
5598e598	2	/*
23987cb8	3	* Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
5598e598	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
b59afbfe	26	#ifndef _SSH_GSS_H
	27	#define _SSH_GSS_H
	28
5598e598	29	#ifdef GSSAPI
5598e598	30
5598e598	31	#include "buffer.h"
5598e598	32
540d72c3	33	#ifdef HAVE_GSSAPI_H
5598e598	34	#include <gssapi.h>
540d72c3	35	#elif defined(HAVE_GSSAPI_GSSAPI_H)
	36	#include <gssapi/gssapi.h>
	37	#endif
5598e598	38
8f0688f5	39	#ifndef MECHGLUE
5598e598	40	#ifdef KRB5
540d72c3	41	# ifndef HEIMDAL
	42	# ifdef HAVE_GSSAPI_GENERIC_H
	43	# include <gssapi_generic.h>
	44	# elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H)
	45	# include <gssapi/gssapi_generic.h>
	46	# endif
5598e598	47
5598e598	48	/* MIT Kerberos doesn't seem to define GSS_NT_HOSTBASED_SERVICE */
7cac2b65	49
5598e598	50	#ifndef GSS_C_NT_HOSTBASED_SERVICE
	51	#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
	52	#endif /* GSS_C_NT_... */
	53	#endif /* !HEIMDAL */
	54	#endif /* KRB5 */
8f0688f5	55	#endif /* !MECHGLUE */
5598e598	56
7cac2b65	57	/* draft-ietf-secsh-gsskeyex-06 */
7cac2b65	58	#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
	59	#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
	60	#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
	61	#define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64
e23e524c	62	#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65
540d72c3	63	#define SSH2_MSG_USERAUTH_GSSAPI_MIC 66
b59afbfe	64
7cac2b65	65	#define SSH_GSS_OIDTYPE 0x06
7cac2b65	66
fe4ad273	67	#define SSH2_MSG_KEXGSS_INIT 30
	68	#define SSH2_MSG_KEXGSS_CONTINUE 31
	69	#define SSH2_MSG_KEXGSS_COMPLETE 32
	70	#define SSH2_MSG_KEXGSS_HOSTKEY 33
	71	#define SSH2_MSG_KEXGSS_ERROR 34
	72	#define SSH2_MSG_KEXGSS_GROUPREQ 40
	73	#define SSH2_MSG_KEXGSS_GROUP 41
	74	#define KEX_GSS_GRP1_SHA1_ID "gss-group1-sha1-"
	75	#define KEX_GSS_GEX_SHA1_ID "gss-gex-sha1-"
5598e598	76
23987cb8	77	typedef struct {
7cac2b65	78	char *filename;
	79	char *envvar;
	80	char *envval;
	81	void *data;
23987cb8	82	} ssh_gssapi_ccache;
	83
	84	typedef struct {
7cac2b65	85	gss_buffer_desc displayname;
	86	gss_buffer_desc exportedname;
	87	gss_cred_id_t creds;
23987cb8	88	struct ssh_gssapi_mech_struct *mech;
	89	ssh_gssapi_ccache store;
	90	} ssh_gssapi_client;
5598e598	91
23987cb8	92	typedef struct ssh_gssapi_mech_struct {
7cac2b65	93	char *enc_name;
	94	char *name;
	95	gss_OID_desc oid;
23987cb8	96	int (dochild) (ssh_gssapi_client );
	97	int (userok) (ssh_gssapi_client , char *);
	98	int (localname) (ssh_gssapi_client , char **);
	99	void (storecreds) (ssh_gssapi_client );
5598e598	100	} ssh_gssapi_mech;
	101
	102	typedef struct {
23987cb8	103	OM_uint32 major; /* both */
23987cb8	104	OM_uint32 minor; /* both */
5598e598	105	gss_ctx_id_t context; /* both */
5598e598	106	gss_name_t name; /* both */
6f9f4dab	107	gss_OID oid; /* both */
5598e598	108	gss_cred_id_t creds; /* server */
	109	gss_name_t client; /* server */
	110	gss_cred_id_t client_creds; /* server */
	111	} Gssctxt;
	112
23987cb8	113	extern ssh_gssapi_mech *supported_mechs[];
fe4ad273	114	extern Gssctxt *gss_kex_context;
7e82606e	115
	116	int ssh_gssapi_check_oid(Gssctxt , void , size_t);
	117	void ssh_gssapi_set_oid_data(Gssctxt , void , size_t);
	118	void ssh_gssapi_set_oid(Gssctxt *, gss_OID);
	119	void ssh_gssapi_supported_oids(gss_OID_set *);
	120	ssh_gssapi_mech ssh_gssapi_get_ctype(Gssctxt );
	121
	122	OM_uint32 ssh_gssapi_import_name(Gssctxt , const char );
	123	OM_uint32 ssh_gssapi_acquire_cred(Gssctxt *);
	124	OM_uint32 ssh_gssapi_init_ctx(Gssctxt *, int,
	125	gss_buffer_desc , gss_buffer_desc , OM_uint32 *);
	126	OM_uint32 ssh_gssapi_accept_ctx(Gssctxt *,
	127	gss_buffer_desc , gss_buffer_desc , OM_uint32 *);
	128	OM_uint32 ssh_gssapi_getclient(Gssctxt , ssh_gssapi_client );
	129	void ssh_gssapi_error(Gssctxt *);
	130	char ssh_gssapi_last_error(Gssctxt , OM_uint32 , OM_uint32 );
	131	void ssh_gssapi_build_ctx(Gssctxt **);
	132	void ssh_gssapi_delete_ctx(Gssctxt **);
540d72c3	133	OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
7e82606e	134	OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
540d72c3	135	void ssh_gssapi_buildmic(Buffer , const char , const char , const char );
5598e598	136
e23e524c	137	int ssh_gssapi_localname(char **name);
7e82606e	138
fe4ad273	139	typedef int ssh_gssapi_check_fn(gss_OID, void *);
	140	char ssh_gssapi_client_mechanisms(const char host);
	141	char ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn , void *);
	142	int ssh_gssapi_check_mechanism(gss_OID, void *);
	143	gss_OID ssh_gssapi_id_kex(Gssctxt , char , int *);
	144
	145	int ssh_gssapi_server_check_mech(gss_OID, void *);
7e82606e	146	int ssh_gssapi_userok(char *name);
540d72c3	147	OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
7e82606e	148	void ssh_gssapi_do_child(char **, u_int );
540d72c3	149	void ssh_gssapi_cleanup_creds(void);
7cac2b65	150	void ssh_gssapi_storecreds(void);
fe4ad273	151	char * ssh_gssapi_server_mechanisms(void);
fe4ad273	152	int ssh_gssapi_oid_table_ok();
b59afbfe	153
f9ee7be6	154	#ifdef MECHGLUE
	155	gss_cred_id_t __gss_get_mechanism_cred
	156	(gss_cred_id_t, /* union_cred */
	157	gss_OID /* mech_type */
	158	);
b59afbfe	159	#endif
076a92b0	160
5598e598	161	#endif /* GSSAPI */
b59afbfe	162
b59afbfe	163	#endif /* _SSH_GSS_H */