FreeBSD/Linux Kernel Cross Reference
sys/kgssapi/gssapi.h

     /*
      * Copyright (C) The Internet Society (2000).  All Rights Reserved.
      *
      * This document and translations of it may be copied and furnished to
      * others, and derivative works that comment on or otherwise explain it
      * or assist in its implementation may be prepared, copied, published
      * and distributed, in whole or in part, without restriction of any
      * kind, provided that the above copyright notice and this paragraph are
      * included on all such copies and derivative works.  However, this
     * document itself may not be modified in any way, such as by removing
     * the copyright notice or references to the Internet Society or other
     * Internet organizations, except as needed for the purpose of
     * developing Internet standards in which case the procedures for
     * copyrights defined in the Internet Standards process must be
     * followed, or as required to translate it into languages other than
     * English.
     *
     * The limited permissions granted above are perpetual and will not be
     * revoked by the Internet Society or its successors or assigns.
     *
     * This document and the information contained herein is provided on an
     * "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
     * TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
     * BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
     * HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
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     *
     * $FreeBSD$
     */
    
    #ifndef _KGSSAPI_GSSAPI_H_
    #define _KGSSAPI_GSSAPI_H_
    
    /*
     * A cut-down version of the GSS-API for in-kernel use
     */
    
    /*
     * Now define the three implementation-dependent types.
     */
    typedef struct _gss_ctx_id_t *gss_ctx_id_t;
    typedef struct _gss_cred_id_t *gss_cred_id_t;
    typedef struct _gss_name_t *gss_name_t;
    
    /*
     * We can't use X/Open definitions, so roll our own.
     */
    typedef uint32_t OM_uint32;
    typedef uint64_t OM_uint64;
    
    typedef struct gss_OID_desc_struct {
      OM_uint32 length;
      void      *elements;
    } gss_OID_desc, *gss_OID;
    
    typedef struct gss_OID_set_desc_struct  {
      size_t     count;
      gss_OID    elements;
    } gss_OID_set_desc, *gss_OID_set;
    
    typedef struct gss_buffer_desc_struct {
      size_t length;
      void *value;
    } gss_buffer_desc, *gss_buffer_t;
    
    typedef struct gss_channel_bindings_struct {
      OM_uint32 initiator_addrtype;
      gss_buffer_desc initiator_address;
      OM_uint32 acceptor_addrtype;
      gss_buffer_desc acceptor_address;
      gss_buffer_desc application_data;
    } *gss_channel_bindings_t;
    
    /*
     * For now, define a QOP-type as an OM_uint32
     */
    typedef OM_uint32 gss_qop_t;
    
    typedef int gss_cred_usage_t;
    
    /*
     * Flag bits for context-level services.
     */
    #define GSS_C_DELEG_FLAG      1
    #define GSS_C_MUTUAL_FLAG     2
    #define GSS_C_REPLAY_FLAG     4
    #define GSS_C_SEQUENCE_FLAG   8
    #define GSS_C_CONF_FLAG       16
    #define GSS_C_INTEG_FLAG      32
    #define GSS_C_ANON_FLAG       64
    #define GSS_C_PROT_READY_FLAG 128
    #define GSS_C_TRANS_FLAG      256
    
    /*
     * Credential usage options
     */
    #define GSS_C_BOTH     0
    #define GSS_C_INITIATE 1
    #define GSS_C_ACCEPT   2
   
   /*
    * Status code types for gss_display_status
    */
   #define GSS_C_GSS_CODE  1
   #define GSS_C_MECH_CODE 2
   
   /*
    * The constant definitions for channel-bindings address families
    */
   #define GSS_C_AF_UNSPEC     0
   #define GSS_C_AF_LOCAL      1
   #define GSS_C_AF_INET       2
   #define GSS_C_AF_IMPLINK    3
   #define GSS_C_AF_PUP        4
   #define GSS_C_AF_CHAOS      5
   #define GSS_C_AF_NS         6
   #define GSS_C_AF_NBS        7
   #define GSS_C_AF_ECMA       8
   #define GSS_C_AF_DATAKIT    9
   #define GSS_C_AF_CCITT      10
   #define GSS_C_AF_SNA        11
   #define GSS_C_AF_DECnet     12
   #define GSS_C_AF_DLI        13
   #define GSS_C_AF_LAT        14
   #define GSS_C_AF_HYLINK     15
   #define GSS_C_AF_APPLETALK  16
   #define GSS_C_AF_BSC        17
   #define GSS_C_AF_DSS        18
   #define GSS_C_AF_OSI        19
   #define GSS_C_AF_X25        21
   #define GSS_C_AF_NULLADDR   255
   
   /*
    * Various Null values
    */
   #define GSS_C_NO_NAME ((gss_name_t) 0)
   #define GSS_C_NO_BUFFER ((gss_buffer_t) 0)
   #define GSS_C_NO_OID ((gss_OID) 0)
   #define GSS_C_NO_OID_SET ((gss_OID_set) 0)
   #define GSS_C_NO_CONTEXT ((gss_ctx_id_t) 0)
   #define GSS_C_NO_CREDENTIAL ((gss_cred_id_t) 0)
   #define GSS_C_NO_CHANNEL_BINDINGS ((gss_channel_bindings_t) 0)
   #define GSS_C_EMPTY_BUFFER {0, NULL}
   
   /*
    * Some alternate names for a couple of the above
    * values.  These are defined for V1 compatibility.
    */
   #define GSS_C_NULL_OID GSS_C_NO_OID
   #define GSS_C_NULL_OID_SET GSS_C_NO_OID_SET
   
   /*
    * Define the default Quality of Protection for per-message
    * services.  Note that an implementation that offers multiple
    * levels of QOP may define GSS_C_QOP_DEFAULT to be either zero
    * (as done here) to mean "default protection", or to a specific
    * explicit QOP value.  However, a value of 0 should always be
    * interpreted by a GSS-API implementation as a request for the
    * default protection level.
    */
   #define GSS_C_QOP_DEFAULT 0
   
   /*
    * Expiration time of 2^32-1 seconds means infinite lifetime for a
    * credential or security context
    */
   #define GSS_C_INDEFINITE 0xfffffffful
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
    * "\x01\x02\x01\x01"},
    * corresponding to an object-identifier value of
    * {iso(1) member-body(2) United States(840) mit(113554)
    * infosys(1) gssapi(2) generic(1) user_name(1)}.  The constant
    * GSS_C_NT_USER_NAME should be initialized to point
    * to that gss_OID_desc.
    */
   extern gss_OID GSS_C_NT_USER_NAME;
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
    *              "\x01\x02\x01\x02"},
    * corresponding to an object-identifier value of
    * {iso(1) member-body(2) United States(840) mit(113554)
    * infosys(1) gssapi(2) generic(1) machine_uid_name(2)}.
    * The constant GSS_C_NT_MACHINE_UID_NAME should be
    * initialized to point to that gss_OID_desc.
    */
   extern gss_OID GSS_C_NT_MACHINE_UID_NAME;
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
    *              "\x01\x02\x01\x03"},
    * corresponding to an object-identifier value of
    * {iso(1) member-body(2) United States(840) mit(113554)
    * infosys(1) gssapi(2) generic(1) string_uid_name(3)}.
    * The constant GSS_C_NT_STRING_UID_NAME should be
    * initialized to point to that gss_OID_desc.
    */
   extern gss_OID GSS_C_NT_STRING_UID_NAME;
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {6, (void *)"\x2b\x06\x01\x05\x06\x02"},
    * corresponding to an object-identifier value of
    * {iso(1) org(3) dod(6) internet(1) security(5)
    * nametypes(6) gss-host-based-services(2)).  The constant
    * GSS_C_NT_HOSTBASED_SERVICE_X should be initialized to point
    * to that gss_OID_desc.  This is a deprecated OID value, and
    * implementations wishing to support hostbased-service names
    * should instead use the GSS_C_NT_HOSTBASED_SERVICE OID,
    * defined below, to identify such names;
    * GSS_C_NT_HOSTBASED_SERVICE_X should be accepted a synonym
    * for GSS_C_NT_HOSTBASED_SERVICE when presented as an input
    * parameter, but should not be emitted by GSS-API
    * implementations
    */
   extern gss_OID GSS_C_NT_HOSTBASED_SERVICE_X;
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
    *              "\x01\x02\x01\x04"}, corresponding to an
    * object-identifier value of {iso(1) member-body(2)
    * Unites States(840) mit(113554) infosys(1) gssapi(2)
    * generic(1) service_name(4)}.  The constant
    * GSS_C_NT_HOSTBASED_SERVICE should be initialized
    * to point to that gss_OID_desc.
    */
   extern gss_OID GSS_C_NT_HOSTBASED_SERVICE;
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {6, (void *)"\x2b\x06\01\x05\x06\x03"},
    * corresponding to an object identifier value of
    * {1(iso), 3(org), 6(dod), 1(internet), 5(security),
    * 6(nametypes), 3(gss-anonymous-name)}.  The constant
    * and GSS_C_NT_ANONYMOUS should be initialized to point
    * to that gss_OID_desc.
    */
   extern gss_OID GSS_C_NT_ANONYMOUS;
   
   /*
    * The implementation must reserve static storage for a
    * gss_OID_desc object containing the value
    * {6, (void *)"\x2b\x06\x01\x05\x06\x04"},
    * corresponding to an object-identifier value of
    * {1(iso), 3(org), 6(dod), 1(internet), 5(security),
    * 6(nametypes), 4(gss-api-exported-name)}.  The constant
    * GSS_C_NT_EXPORT_NAME should be initialized to point
    * to that gss_OID_desc.
    */
   extern gss_OID GSS_C_NT_EXPORT_NAME;
   
   /*
    *   This name form shall be represented by the Object Identifier {iso(1)
    *   member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
    *   krb5(2) krb5_name(1)}.  The recommended symbolic name for this type
    *   is "GSS_KRB5_NT_PRINCIPAL_NAME".
    */
   extern gss_OID GSS_KRB5_NT_PRINCIPAL_NAME;
   
   /*
    * This name form shall be represented by the Object Identifier {iso(1)
    * member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
    * generic(1) user_name(1)}.  The recommended symbolic name for this
    * type is "GSS_KRB5_NT_USER_NAME".
    */
   extern gss_OID GSS_KRB5_NT_USER_NAME;
   
   /*
    * This name form shall be represented by the Object Identifier {iso(1)
    * member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
    * generic(1) machine_uid_name(2)}.  The recommended symbolic name for
    * this type is "GSS_KRB5_NT_MACHINE_UID_NAME".
    */
   extern gss_OID GSS_KRB5_NT_MACHINE_UID_NAME;
   
   /*
    * This name form shall be represented by the Object Identifier {iso(1)
    * member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
    * generic(1) string_uid_name(3)}.  The recommended symbolic name for
    * this type is "GSS_KRB5_NT_STRING_UID_NAME".
    */
   extern gss_OID GSS_KRB5_NT_STRING_UID_NAME;
   
   /* Major status codes */
   
   #define GSS_S_COMPLETE 0
   
   /*
    * Some "helper" definitions to make the status code macros obvious.
    */
   #define GSS_C_CALLING_ERROR_OFFSET 24
   #define GSS_C_ROUTINE_ERROR_OFFSET 16
   #define GSS_C_SUPPLEMENTARY_OFFSET 0
   #define GSS_C_CALLING_ERROR_MASK 0377ul
   #define GSS_C_ROUTINE_ERROR_MASK 0377ul
   #define GSS_C_SUPPLEMENTARY_MASK 0177777ul
   
   /*
    * The macros that test status codes for error conditions.
    * Note that the GSS_ERROR() macro has changed slightly from
    * the V1 GSS-API so that it now evaluates its argument
    * only once.
    */
   #define GSS_CALLING_ERROR(x) \
    (x & (GSS_C_CALLING_ERROR_MASK << GSS_C_CALLING_ERROR_OFFSET))
   #define GSS_ROUTINE_ERROR(x) \
    (x & (GSS_C_ROUTINE_ERROR_MASK << GSS_C_ROUTINE_ERROR_OFFSET))
   #define GSS_SUPPLEMENTARY_INFO(x) \
    (x & (GSS_C_SUPPLEMENTARY_MASK << GSS_C_SUPPLEMENTARY_OFFSET))
   #define GSS_ERROR(x) \
    (x & ((GSS_C_CALLING_ERROR_MASK << GSS_C_CALLING_ERROR_OFFSET) | \
          (GSS_C_ROUTINE_ERROR_MASK << GSS_C_ROUTINE_ERROR_OFFSET)))
   
   /*
    * Now the actual status code definitions
    */
   
   /*
    * Calling errors:
    */
   #define GSS_S_CALL_INACCESSIBLE_READ \
   (1ul << GSS_C_CALLING_ERROR_OFFSET)
   #define GSS_S_CALL_INACCESSIBLE_WRITE \
   (2ul << GSS_C_CALLING_ERROR_OFFSET)
   #define GSS_S_CALL_BAD_STRUCTURE \
   (3ul << GSS_C_CALLING_ERROR_OFFSET)
   
   /*
    * Routine errors:
    */
   #define GSS_S_BAD_MECH             (1ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_NAME             (2ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_NAMETYPE         (3ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_BINDINGS         (4ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_STATUS           (5ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_SIG              (6ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_MIC              GSS_S_BAD_SIG
   #define GSS_S_NO_CRED              (7ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_NO_CONTEXT           (8ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_DEFECTIVE_TOKEN      (9ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_DEFECTIVE_CREDENTIAL (10ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_CREDENTIALS_EXPIRED  (11ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_CONTEXT_EXPIRED      (12ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_FAILURE              (13ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_BAD_QOP              (14ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_UNAUTHORIZED         (15ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_UNAVAILABLE          (16ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_DUPLICATE_ELEMENT    (17ul << GSS_C_ROUTINE_ERROR_OFFSET)
   #define GSS_S_NAME_NOT_MN          (18ul << GSS_C_ROUTINE_ERROR_OFFSET)
   
   /*
    * Supplementary info bits:
    */
   #define GSS_S_CONTINUE_NEEDED \
            (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 0))
   #define GSS_S_DUPLICATE_TOKEN \
            (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 1))
   #define GSS_S_OLD_TOKEN \
            (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 2))
   #define GSS_S_UNSEQ_TOKEN \
            (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 3))
   #define GSS_S_GAP_TOKEN \
            (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 4))
   
   __BEGIN_DECLS
   
   /*
    * Finally, function prototypes for the GSS-API routines.
    */
   OM_uint32 gss_acquire_cred
                 (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 */
                 );
   
   OM_uint32 gss_release_cred
                 (OM_uint32 *,            /* minor_status */
                  gss_cred_id_t *         /* cred_handle */
                 );
   
   OM_uint32 gss_init_sec_context
                 (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 */
                 );
   
   OM_uint32 gss_accept_sec_context
                 (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 */
                 );
   
   OM_uint32 gss_delete_sec_context
                 (OM_uint32 *,            /* minor_status */
                  gss_ctx_id_t *,         /* context_handle */
                  gss_buffer_t            /* output_token */
                 );
   
   OM_uint32 gss_get_mic
                 (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 */
                 );
   
   OM_uint32 gss_verify_mic
                 (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 */
                 );
   
   OM_uint32 gss_wrap
                 (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 */
                 );
   
   OM_uint32 gss_unwrap
                 (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 */
                 );
   
   OM_uint32 gss_display_status
                 (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 */
                 );
   
   OM_uint32 gss_import_name
                 (OM_uint32 *,            /* minor_status */
                  const gss_buffer_t,     /* input_name_buffer */
                  const gss_OID,          /* input_name_type */
                  gss_name_t *            /* output_name */
                 );
   
   OM_uint32 gss_export_name
                 (OM_uint32 *,            /* minor_status */
                  const gss_name_t,       /* input_name */
                  gss_buffer_t            /* exported_name */
                 );
   
   OM_uint32 gss_release_name
                 (OM_uint32 *,            /* minor_status */
                  gss_name_t *            /* input_name */
                 );
   
   OM_uint32 gss_release_buffer
                 (OM_uint32 *,            /* minor_status */
                  gss_buffer_t            /* buffer */
                 );
   
   OM_uint32 gss_release_oid_set
                 (OM_uint32 *,            /* minor_status */
                  gss_OID_set *           /* set */
                 );
   
   OM_uint32 gss_wrap_size_limit (
                  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 */
                 );
   
   OM_uint32 gss_create_empty_oid_set (
                  OM_uint32 *,            /* minor_status */
                  gss_OID_set *           /* oid_set */
                 );
   
   OM_uint32 gss_add_oid_set_member (
                  OM_uint32 *,            /* minor_status */
                  const gss_OID,          /* member_oid */
                  gss_OID_set *           /* oid_set */
                 );
   
   OM_uint32 gss_test_oid_set_member (
                  OM_uint32 *,            /* minor_status */
                  const gss_OID,          /* member */
                  const gss_OID_set,      /* set */
                  int *                   /* present */
                 );
   
   OM_uint32 gss_canonicalize_name (
                  OM_uint32 *,            /* minor_status */
                  const gss_name_t,       /* input_name */
                  const gss_OID,          /* mech_type */
                  gss_name_t *            /* output_name */
                 );
   
   /*
    * Other extensions and helper functions.
    */
   
   OM_uint32 gss_set_cred_option
                 (OM_uint32 *,             /* minor status */
                  gss_cred_id_t *,         /* cred */
                  const gss_OID,           /* option to set */
                  const gss_buffer_t       /* option value */
                 );
   
   OM_uint32 gss_pname_to_uid
                 (OM_uint32 *,             /* minor status */
                  const gss_name_t pname,  /* principal name */
                  const gss_OID mech,      /* mechanism to query */
                  uid_t *uidp              /* pointer to UID for result */
                 );
   
   /*
    * On entry, *numgroups is set to the maximum number of groups to return. On exit, *numgroups is set to the actual number of groups returned.
    */
   OM_uint32 gss_pname_to_unix_cred
                 (OM_uint32 *,             /* minor status */
                  const gss_name_t pname,  /* principal name */
                  const gss_OID mech,      /* mechanism to query */
                  uid_t *uidp,             /* pointer to UID for result */
                  gid_t *gidp,             /* pointer to GID for result */
                  int *numgroups,          /* number of groups */
                  gid_t *groups            /* pointer to group list */
                 );
   
   /*
    * Mbuf oriented message signing and encryption.
    *
    * Get_mic allocates an mbuf to hold the message checksum. Verify_mic
    * may modify the passed-in mic but will not free it.
    *
    * Wrap and unwrap
    * consume the message and generate a new mbuf chain with the
    * result. The original message is freed on error.
    */
   struct mbuf;
   OM_uint32 gss_get_mic_mbuf
                 (OM_uint32 *,            /* minor_status */
                  const gss_ctx_id_t,     /* context_handle */
                  gss_qop_t,              /* qop_req */
                  struct mbuf *,          /* message_buffer */
                  struct mbuf **          /* message_token */
                 );
   
   OM_uint32 gss_verify_mic_mbuf
                 (OM_uint32 *,            /* minor_status */
                  const gss_ctx_id_t,     /* context_handle */
                  struct mbuf *,          /* message_buffer */
                  struct mbuf *,          /* token_buffer */
                  gss_qop_t *             /* qop_state */
                 );
   
   OM_uint32 gss_wrap_mbuf
                 (OM_uint32 *,            /* minor_status */
                  const gss_ctx_id_t,     /* context_handle */
                  int,                    /* conf_req_flag */
                  gss_qop_t,              /* qop_req */
                  struct mbuf **,         /* message_buffer */
                  int *                   /* conf_state */
                 );
   
   OM_uint32 gss_unwrap_mbuf
                 (OM_uint32 *,            /* minor_status */
                  const gss_ctx_id_t,     /* context_handle */
                  struct mbuf **,         /* message_buffer */
                  int *,                  /* conf_state */
                  gss_qop_t *             /* qop_state */
                 );
   
   __END_DECLS
   
   #endif /* _KGSSAPI_GSSAPI_H_ */

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