/*-
 * Copyright (c) 2005 Doug Rabson
 * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 *
 *	$FreeBSD: src/lib/libgssapi/mech_switch.h,v 1.1 2005/12/29 14:40:20 dfr Exp $
 */

#ifndef GSSAPI_MECH_H
#define GSSAPI_MECH_H 1

#include <gssapi.h>

typedef OM_uint32 GSSAPI_CALLCONV _gss_acquire_cred_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* desired_name */
	       OM_uint32,              /* time_req */
	       const gss_OID_set,      /* desired_mechs */
	       gss_cred_usage_t,       /* cred_usage */
	       gss_cred_id_t *,        /* output_cred_handle */
	       gss_OID_set *,          /* actual_mechs */
	       OM_uint32 *             /* time_rec */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_release_cred_t
	      (OM_uint32 *,            /* minor_status */
	       gss_cred_id_t *         /* cred_handle */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_init_sec_context_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_cred_id_t,    /* initiator_cred_handle */
	       gss_ctx_id_t *,         /* context_handle */
	       const gss_name_t,       /* target_name */
	       const gss_OID,          /* mech_type */
	       OM_uint32,              /* req_flags */
	       OM_uint32,              /* time_req */
	       const gss_channel_bindings_t,
				       /* input_chan_bindings */
	       const gss_buffer_t,     /* input_token */
	       gss_OID *,              /* actual_mech_type */
	       gss_buffer_t,           /* output_token */
	       OM_uint32 *,            /* ret_flags */
	       OM_uint32 *             /* time_rec */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_accept_sec_context_t
	      (OM_uint32 *,            /* minor_status */
	       gss_ctx_id_t *,         /* context_handle */
	       const gss_cred_id_t,    /* acceptor_cred_handle */
	       const gss_buffer_t,     /* input_token_buffer */
	       const gss_channel_bindings_t,
				       /* input_chan_bindings */
	       gss_name_t *,           /* src_name */
	       gss_OID *,              /* mech_type */
	       gss_buffer_t,           /* output_token */
	       OM_uint32 *,            /* ret_flags */
	       OM_uint32 *,            /* time_rec */
	       gss_cred_id_t *         /* delegated_cred_handle */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_process_context_token_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       const gss_buffer_t      /* token_buffer */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_delete_sec_context_t
	      (OM_uint32 *,            /* minor_status */
	       gss_ctx_id_t *,         /* context_handle */
	       gss_buffer_t            /* output_token */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_context_time_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       OM_uint32 *             /* time_rec */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_get_mic_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       gss_qop_t,              /* qop_req */
	       const gss_buffer_t,     /* message_buffer */
	       gss_buffer_t            /* message_token */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_verify_mic_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       const gss_buffer_t,     /* message_buffer */
	       const gss_buffer_t,     /* token_buffer */
	       gss_qop_t *             /* qop_state */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_wrap_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       int,                    /* conf_req_flag */
	       gss_qop_t,              /* qop_req */
	       const gss_buffer_t,     /* input_message_buffer */
	       int *,                  /* conf_state */
	       gss_buffer_t            /* output_message_buffer */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_unwrap_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       const gss_buffer_t,     /* input_message_buffer */
	       gss_buffer_t,           /* output_message_buffer */
	       int *,                  /* conf_state */
	       gss_qop_t *             /* qop_state */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_display_status_t
	      (OM_uint32 *,            /* minor_status */
	       OM_uint32,              /* status_value */
	       int,                    /* status_type */
	       const gss_OID,          /* mech_type */
	       OM_uint32 *,            /* message_context */
	       gss_buffer_t            /* status_string */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_indicate_mechs_t
	      (OM_uint32 *,            /* minor_status */
	       gss_OID_set *           /* mech_set */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_compare_name_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* name1 */
	       const gss_name_t,       /* name2 */
	       int *                   /* name_equal */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_display_name_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* input_name */
	       gss_buffer_t,           /* output_name_buffer */
	       gss_OID *               /* output_name_type */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_import_name_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_buffer_t,     /* input_name_buffer */
	       const gss_OID,          /* input_name_type */
	       gss_name_t *            /* output_name */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_export_name_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* input_name */
	       gss_buffer_t            /* exported_name */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_release_name_t
	      (OM_uint32 *,            /* minor_status */
	       gss_name_t *            /* input_name */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_cred_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_cred_id_t,    /* cred_handle */
	       gss_name_t *,           /* name */
	       OM_uint32 *,            /* lifetime */
	       gss_cred_usage_t *,     /* cred_usage */
	       gss_OID_set *           /* mechanisms */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_context_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       gss_name_t *,           /* src_name */
	       gss_name_t *,           /* targ_name */
	       OM_uint32 *,            /* lifetime_rec */
	       gss_OID *,              /* mech_type */
	       OM_uint32 *,            /* ctx_flags */
	       int *,                  /* locally_initiated */
	       int *                   /* open */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_wrap_size_limit_t
	      (OM_uint32 *,            /* minor_status */
	       const gss_ctx_id_t,     /* context_handle */
	       int,                    /* conf_req_flag */
	       gss_qop_t,              /* qop_req */
	       OM_uint32,              /* req_output_size */
	       OM_uint32 *             /* max_input_size */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_add_cred_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_cred_id_t,    /* input_cred_handle */
	       const gss_name_t,       /* desired_name */
	       const gss_OID,          /* desired_mech */
	       gss_cred_usage_t,       /* cred_usage */
	       OM_uint32,              /* initiator_time_req */
	       OM_uint32,              /* acceptor_time_req */
	       gss_cred_id_t *,        /* output_cred_handle */
	       gss_OID_set *,          /* actual_mechs */
	       OM_uint32 *,            /* initiator_time_rec */
	       OM_uint32 *             /* acceptor_time_rec */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_cred_by_mech_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_cred_id_t,    /* cred_handle */
	       const gss_OID,          /* mech_type */
	       gss_name_t *,           /* name */
	       OM_uint32 *,            /* initiator_lifetime */
	       OM_uint32 *,            /* acceptor_lifetime */
	       gss_cred_usage_t *      /* cred_usage */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_export_sec_context_t (
	       OM_uint32 *,            /* minor_status */
	       gss_ctx_id_t *,         /* context_handle */
	       gss_buffer_t            /* interprocess_token */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_import_sec_context_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_buffer_t,     /* interprocess_token */
	       gss_ctx_id_t *          /* context_handle */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_names_for_mech_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_OID,          /* mechanism */
	       gss_OID_set *           /* name_types */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_mechs_for_name_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* input_name */
	       gss_OID_set *           /* mech_types */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_canonicalize_name_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* input_name */
	       const gss_OID,          /* mech_type */
	       gss_name_t *            /* output_name */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_duplicate_name_t (
	       OM_uint32 *,            /* minor_status */
	       const gss_name_t,       /* src_name */
	       gss_name_t *            /* dest_name */
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_sec_context_by_oid (
	       OM_uint32 *minor_status,
	       const gss_ctx_id_t context_handle,
	       const gss_OID desired_object,
	       gss_buffer_set_t *data_set
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_cred_by_oid (
	       OM_uint32 *minor_status,
	       const gss_cred_id_t cred,
	       const gss_OID desired_object,
	       gss_buffer_set_t *data_set
	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_set_sec_context_option (
	       OM_uint32 *minor_status,
	       gss_ctx_id_t *cred_handle,
	       const gss_OID desired_object,
	       const gss_buffer_t value
 	      );

typedef OM_uint32 GSSAPI_CALLCONV _gss_set_cred_option (
	       OM_uint32 *minor_status,
	       gss_cred_id_t *cred_handle,
	       const gss_OID desired_object,
	       const gss_buffer_t value
 	      );


typedef OM_uint32 GSSAPI_CALLCONV _gss_pseudo_random(
    	       OM_uint32 *minor_status,
	       gss_ctx_id_t context,
	       int prf_key,
	       const gss_buffer_t prf_in,
	       ssize_t desired_output_len,
	       gss_buffer_t prf_out
              );

typedef OM_uint32 GSSAPI_CALLCONV
_gss_wrap_iov_t(OM_uint32 *minor_status,
		gss_ctx_id_t  context_handle,
		int conf_req_flag,
		gss_qop_t qop_req,
		int * conf_state,
		gss_iov_buffer_desc *iov,
		int iov_count);

typedef OM_uint32 GSSAPI_CALLCONV
_gss_unwrap_iov_t(OM_uint32 *minor_status,
		  gss_ctx_id_t context_handle,
		  int *conf_state,
		  gss_qop_t *qop_state,
		  gss_iov_buffer_desc *iov,
		  int iov_count);

typedef OM_uint32 GSSAPI_CALLCONV
_gss_wrap_iov_length_t(OM_uint32 * minor_status,
		       gss_ctx_id_t context_handle,
		       int conf_req_flag,
		       gss_qop_t qop_req,
		       int *conf_state,
		       gss_iov_buffer_desc *iov,
		       int iov_count);

typedef OM_uint32 GSSAPI_CALLCONV
_gss_store_cred_t(OM_uint32         *minor_status,
		  gss_cred_id_t     input_cred_handle,
		  gss_cred_usage_t  cred_usage,
		  const gss_OID     desired_mech,
		  OM_uint32         overwrite_cred,
		  OM_uint32         default_cred,
		  gss_OID_set       *elements_stored,
		  gss_cred_usage_t  *cred_usage_stored);

typedef OM_uint32 GSSAPI_CALLCONV
_gss_export_cred_t(OM_uint32 *minor_status,
		   gss_cred_id_t cred_handle,
		   gss_buffer_t cred_token);

typedef OM_uint32 GSSAPI_CALLCONV
_gss_import_cred_t(OM_uint32 * minor_status,
		   gss_buffer_t cred_token,
		   gss_cred_id_t * cred_handle);


#define GMI_VERSION 2

/* gm_flags */
#define GM_USE_MG_CRED      	1	/* uses mech glue credentials */


typedef struct gssapi_mech_interface_desc {
	unsigned			gm_version;
	const char			*gm_name;
	gss_OID_desc			gm_mech_oid;
        unsigned			gm_flags;
	_gss_acquire_cred_t		*gm_acquire_cred;
	_gss_release_cred_t		*gm_release_cred;
	_gss_init_sec_context_t		*gm_init_sec_context;
	_gss_accept_sec_context_t	*gm_accept_sec_context;
	_gss_process_context_token_t	*gm_process_context_token;
	_gss_delete_sec_context_t	*gm_delete_sec_context;
	_gss_context_time_t		*gm_context_time;
	_gss_get_mic_t			*gm_get_mic;
	_gss_verify_mic_t		*gm_verify_mic;
	_gss_wrap_t			*gm_wrap;
	_gss_unwrap_t			*gm_unwrap;
	_gss_display_status_t		*gm_display_status;
	_gss_indicate_mechs_t		*gm_indicate_mechs;
	_gss_compare_name_t		*gm_compare_name;
	_gss_display_name_t		*gm_display_name;
	_gss_import_name_t		*gm_import_name;
	_gss_export_name_t		*gm_export_name;
	_gss_release_name_t		*gm_release_name;
	_gss_inquire_cred_t		*gm_inquire_cred;
	_gss_inquire_context_t		*gm_inquire_context;
	_gss_wrap_size_limit_t		*gm_wrap_size_limit;
	_gss_add_cred_t			*gm_add_cred;
	_gss_inquire_cred_by_mech_t	*gm_inquire_cred_by_mech;
	_gss_export_sec_context_t	*gm_export_sec_context;
	_gss_import_sec_context_t	*gm_import_sec_context;
	_gss_inquire_names_for_mech_t	*gm_inquire_names_for_mech;
	_gss_inquire_mechs_for_name_t	*gm_inquire_mechs_for_name;
	_gss_canonicalize_name_t	*gm_canonicalize_name;
	_gss_duplicate_name_t		*gm_duplicate_name;
	_gss_inquire_sec_context_by_oid	*gm_inquire_sec_context_by_oid;
	_gss_inquire_cred_by_oid	*gm_inquire_cred_by_oid;
	_gss_set_sec_context_option	*gm_set_sec_context_option;
	_gss_set_cred_option		*gm_set_cred_option;
	_gss_pseudo_random		*gm_pseudo_random;
	_gss_wrap_iov_t			*gm_wrap_iov;
	_gss_unwrap_iov_t		*gm_unwrap_iov;
	_gss_wrap_iov_length_t		*gm_wrap_iov_length;
	_gss_store_cred_t		*gm_store_cred;
	_gss_export_cred_t		*gm_export_cred;
	_gss_import_cred_t		*gm_import_cred;
} gssapi_mech_interface_desc, *gssapi_mech_interface;

gssapi_mech_interface
__gss_get_mechanism(gss_OID /* oid */);

gssapi_mech_interface __gss_spnego_initialize(void);
gssapi_mech_interface __gss_krb5_initialize(void);
gssapi_mech_interface __gss_ntlm_initialize(void);

void		gss_mg_collect_error(gss_OID, OM_uint32, OM_uint32);

#endif /* GSSAPI_MECH_H */
