text: /*-
   * Copyright (c) 2005 Doug Rabson
   * Copyright (c) 2018 Kungliga Tekniska Högskolan
   * (Royal Institute of Technology, Stockholm, Sweden).
   * All rights reserved.
   *
   * Portions Copyright (c) 2009 Apple Inc. 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 */
  	       gss_const_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 */
  	       gss_const_cred_id_t,    /* initiator_cred_handle */
  	       gss_ctx_id_t *,         /* context_handle */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_ctx_id_t,     /* context_handle */
  	       OM_uint32 *             /* time_rec */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_get_mic_t
  	      (OM_uint32 *,            /* minor_status */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_name_t,       /* name1 */
  	       gss_const_name_t,       /* name2 */
  	       int *                   /* name_equal */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_display_name_t
  	      (OM_uint32 *,            /* minor_status */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_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 */
  	       gss_const_cred_id_t,    /* input_cred_handle */
  	       gss_const_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_duplicate_cred_t (
  	       OM_uint32 *,            /* minor_status */
  	       gss_const_cred_id_t,    /* input_cred_handle */
  	       gss_cred_id_t *         /* output_cred_handle */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_cred_by_mech_t (
  	       OM_uint32 *,            /* minor_status */
  	       gss_const_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 */
  	       gss_const_name_t,       /* input_name */
  	       gss_OID_set *           /* mech_types */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_canonicalize_name_t (
  	       OM_uint32 *,            /* minor_status */
  	       gss_const_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 */
  	       gss_const_name_t,       /* src_name */
  	       gss_name_t *            /* dest_name */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_sec_context_by_oid_t (
  	       OM_uint32 *minor_status,
  	       gss_const_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_t (
  	       OM_uint32 *minor_status,
  	       gss_const_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_t (
  	       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_t (
  	       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_t (
      	       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);
   
  typedef void GSSAPI_CALLCONV
  _gss_iter_creds_t(OM_uint32 /* flags */,
  		  void * /* userctx */,
  		  void (* /*cred_iter */ )(void *, gss_OID, gss_cred_id_t));
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_destroy_cred_t(OM_uint32 * /* minor_status */,
  		    gss_cred_id_t * /* cred */);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_cred_hold_t(OM_uint32 * /* minor_status */,
  		 gss_cred_id_t /* cred */);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_cred_unhold_t(OM_uint32 * /* minor_status */,
  		   gss_cred_id_t /* cred */);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_cred_label_set_t(OM_uint32 * /* minor_status */,
  		      gss_cred_id_t /* cred */,
  		      const char * /* label */,
  		      gss_buffer_t /* value */);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_cred_label_get_t(OM_uint32 * /* minor_status */,
  		      gss_cred_id_t /* cred */,
  		      const char * /* label */,
  		      gss_buffer_t /* value */);
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_display_name_ext_t (
  	       OM_uint32 *,            /* minor_status */
  	       gss_name_t,             /* name */
  	       gss_OID,                /* display_as_name_type */
  	       gss_buffer_t            /* display_name */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_inquire_name_t (
  	       OM_uint32 *,            /* minor_status */
  	       gss_name_t,             /* name */
  	       int *,                  /* name_is_MN */
  	       gss_OID *,              /* MN_mech */
  	       gss_buffer_set_t *      /* attrs */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_get_name_attribute_t (
  	       OM_uint32 *,	      /* minor_status */
  	       gss_name_t,            /* name */
  	       gss_buffer_t,          /* attr */
  	       int *,                 /* authenticated */
  	       int *,                 /* complete */
  	       gss_buffer_t,          /* value */
  	       gss_buffer_t,          /* display_value */
  	       int *                  /* more */
  	    );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_set_name_attribute_t (
  	       OM_uint32 *,           /* minor_status */
  	       gss_name_t,            /* name */
  	       int,                   /* complete */
  	       gss_buffer_t,          /* attr */
  	       gss_buffer_t           /* value */
  	    );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_delete_name_attribute_t (
  	       OM_uint32 *,           /* minor_status */
  	       gss_name_t,            /* name */
  	       gss_buffer_t           /* attr */
  	    );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_export_name_composite_t (
  	       OM_uint32 *,           /* minor_status */
  	       gss_name_t,            /* name */
  	       gss_buffer_t           /* exp_composite_name */
  	    );
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_acquire_cred_from_t(OM_uint32 *minor_status,
  			 gss_const_name_t desired_name,
  		         OM_uint32 time_req,
  		         gss_OID_set desired_mechs,
  		         gss_cred_usage_t cred_usage,
  		         gss_const_key_value_set_t cred_store,
  		         gss_cred_id_t *output_cred_handle,
  			 gss_OID_set *actual_mechs,
  			 OM_uint32 *time_rec);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_add_cred_from_t(OM_uint32 *minor_status,
  		     gss_cred_id_t input_cred_handle,
  		     gss_const_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_const_key_value_set_t cred_store,
  		     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_store_cred_into_t(OM_uint32 *minor_status,
  		       gss_const_cred_id_t input_cred_handle,
  		       gss_cred_usage_t input_usage,
  		       gss_OID desired_mech,
  		       OM_uint32 overwrite_cred,
  		       OM_uint32 default_cred,
  		       gss_const_key_value_set_t cred_store,
  		       gss_OID_set *elements_stored,
  		       gss_cred_usage_t *cred_usage_stored);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_store_cred_into2_t(OM_uint32 *minor_status,
  		        gss_const_cred_id_t input_cred_handle,
  		        gss_cred_usage_t input_usage,
  		        gss_OID desired_mech,
  		        OM_uint32 store_cred_flags,
  		        gss_const_key_value_set_t cred_store,
  		        gss_OID_set *elements_stored,
  		        gss_cred_usage_t *cred_usage_stored,
                          gss_buffer_set_t *env);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_query_mechanism_info_t(OM_uint32 *minor_status,
  			    gss_const_OID mech_oid,
  			    unsigned char auth_scheme[16]);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_query_meta_data_t(OM_uint32 *minor_status,
  		       gss_const_OID mech_oid,
  		       gss_cred_id_t cred_handle,
  		       gss_ctx_id_t *ctx_handle,
  		       gss_const_name_t targ_name,
  		       OM_uint32 req_flags,
  		       gss_buffer_t meta_data);
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_exchange_meta_data_t(OM_uint32 *minor_status,
  			  gss_const_OID mech_oid,
  			  gss_cred_id_t cred_handle,
  			  gss_ctx_id_t *ctx_handle,
  			  gss_const_name_t targ_name,
  			  OM_uint32 req_flags,
  			  gss_const_buffer_t meta_data);
  
  /*
   *
   */
  
  typedef struct gss_mo_desc_struct gss_mo_desc;
  
  typedef OM_uint32 GSSAPI_CALLCONV
  _gss_mo_init (OM_uint32 *, gss_OID, gss_mo_desc **, size_t *);
  
  
  struct gss_mo_desc_struct {
      gss_OID option;
      OM_uint32 flags;
  #define GSS_MO_MA		1
  #define GSS_MO_MA_CRITICAL	2
      const char *name;
      void *ctx;
      int (*get)(gss_const_OID, gss_mo_desc *, gss_buffer_t);
      int (*set)(gss_const_OID, gss_mo_desc *, int, gss_buffer_t);
  };
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_localname_t (
  	       OM_uint32 *,		/* minor_status */
  	       gss_const_name_t,	/* name */
  	       const gss_OID,		/* mech_type */
  	       gss_buffer_t		/* localname */
  	      );
  
  typedef OM_uint32 GSSAPI_CALLCONV _gss_authorize_localname_t (
  	       OM_uint32 *,		/* minor_status */
  	       gss_const_name_t,	/* name */
  	       gss_const_buffer_t,	/* user */
  	       gss_const_OID		/* user_name_type */
  	      );
  
  struct _gss_name;
  struct _gss_cred;
  
  /* mechglue internal */
  struct gss_mech_compat_desc_struct;
  
  #define GMI_VERSION 6
  
  /* gm_flags */
  #define GM_USE_MG_CRED      	1	/* uses mech glue credentials */
  #define GM_USE_MG_NAME      	2	/* uses mech glue names       */
  
  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_t	*gm_inquire_sec_context_by_oid;
  	_gss_inquire_cred_by_oid_t	*gm_inquire_cred_by_oid;
  	_gss_set_sec_context_option_t	*gm_set_sec_context_option;
  	_gss_set_cred_option_t		*gm_set_cred_option;
  	_gss_pseudo_random_t		*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;
  	_gss_acquire_cred_from_t	*gm_acquire_cred_from; /* was acquire_cred_ext */
  	_gss_iter_creds_t		*gm_iter_creds;
  	_gss_destroy_cred_t		*gm_destroy_cred;
  	_gss_cred_hold_t		*gm_cred_hold;
  	_gss_cred_unhold_t		*gm_cred_unhold;
  	_gss_cred_label_get_t		*gm_cred_label_get;
  	_gss_cred_label_set_t		*gm_cred_label_set;
          gss_mo_desc			*gm_mo;
          size_t				 gm_mo_num;
          _gss_localname_t                *gm_localname;
          _gss_authorize_localname_t      *gm_authorize_localname;
          _gss_display_name_ext_t         *gm_display_name_ext;
          _gss_inquire_name_t             *gm_inquire_name;
          _gss_get_name_attribute_t       *gm_get_name_attribute;
          _gss_set_name_attribute_t       *gm_set_name_attribute;
          _gss_delete_name_attribute_t    *gm_delete_name_attribute;
          _gss_export_name_composite_t    *gm_export_name_composite;
          _gss_duplicate_cred_t           *gm_duplicate_cred;
  	_gss_add_cred_from_t		*gm_add_cred_from;
  	_gss_store_cred_into_t		*gm_store_cred_into;
  	_gss_query_mechanism_info_t	*gm_query_mechanism_info;
  	_gss_query_meta_data_t		*gm_query_meta_data;
  	_gss_exchange_meta_data_t	*gm_exchange_meta_data;
  	_gss_store_cred_into2_t		*gm_store_cred_into2;
          struct gss_mech_compat_desc_struct  *gm_compat;
  } gssapi_mech_interface_desc, *gssapi_mech_interface;
  
  gssapi_mech_interface
  __gss_get_mechanism(gss_const_OID /* oid */);
  
  gss_OID
  _gss_mg_support_mechanism(gss_const_OID mech);
  
  gssapi_mech_interface __gss_spnego_initialize(void);
  gssapi_mech_interface __gss_krb5_initialize(void);
  gssapi_mech_interface __gss_ntlm_initialize(void);
  gssapi_mech_interface __gss_sanon_initialize(void);
  
  void		gss_mg_collect_error(gss_OID, OM_uint32, OM_uint32);
  
  int _gss_mo_get_option_1(gss_const_OID, gss_mo_desc *, gss_buffer_t);
  int _gss_mo_get_option_0(gss_const_OID, gss_mo_desc *, gss_buffer_t);
  int _gss_mo_get_ctx_as_string(gss_const_OID, gss_mo_desc *, gss_buffer_t);
  
  struct _gss_name_type {
      gss_OID    gnt_name_type;
      OM_uint32  (*gnt_parse)(OM_uint32 *, gss_const_OID, const gss_buffer_t,
  			    gss_const_OID, gss_name_t *);
  };
  
  struct _gss_oid_name_table {
      gss_OID oid;
      const char *name;
      const char *short_desc;
      const char *long_desc;
  };
  
  extern struct _gss_oid_name_table _gss_ont_mech[];
  extern struct _gss_oid_name_table _gss_ont_ma[];
  
  int
  _gss_mg_log_level(int level);
  
  void
  _gss_mg_log(int level, const char *fmt, ...)
      HEIMDAL_PRINTF_ATTRIBUTE((printf, 2, 3));
  
  void
  _gss_mg_log_name(int level,
  		 struct _gss_name *name,
  		 gss_OID mech_type,
  		 const char *fmt, ...);
  
  void
  _gss_mg_log_cred(int level,
  		 struct _gss_cred *cred,
  		 const char *fmt, ...);
  
  
  void
  _gss_load_plugins(void);
  
  gss_iov_buffer_desc *
  _gss_mg_find_buffer(gss_iov_buffer_desc *iov,
  		    int iov_count,
  		    OM_uint32 type);
  
  OM_uint32
  _gss_mg_allocate_buffer(OM_uint32 *minor_status,
  			gss_iov_buffer_desc *buffer,
  			size_t size);
  
  OM_uint32
  gss_mg_set_error_string(gss_OID mech,
                         OM_uint32 maj, OM_uint32 min,
                         const char *fmt, ...);
  
  gss_cred_id_t
  _gss_mg_find_mech_cred(gss_const_cred_id_t cred_handle,
  		       gss_const_OID mech_type);
  
  #include <krb5.h>
  
  /*
   * Mechglue krb5 context for use by NegoEx. This is not shared with the
   * krb5 GSS mechanism so we don't clobber its error state.
   */
  krb5_context
  _gss_mg_krb5_context(void);
  
  #endif /* GSSAPI_MECH_H */
  