Add a new extensible GSS-API layer which can support GSS-API plugins,

similar the the Solaris implementation. Repackage the krb5 GSS mechanism
as a plugin library for the new implementation. This also includes a
comprehensive set of manpages for the GSS-API functions with text mostly
taken from the RFC.

Reviewed by: Love Hörnquist Åstrand <lha@it.su.se>, ru (build system), des (openssh parts)

4 files changed, 770 insertions, 2 deletions

diff --git a/include/Makefile b/include/Makefile
index e488788..9761372 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -4,11 +4,11 @@
 # Doing a "make install" builds /usr/include.
 
 CLEANFILES= osreldate.h version vers.c
-SUBDIR= arpa protocols rpcsvc rpc
+SUBDIR= arpa gssapi protocols rpcsvc rpc
 INCS=	a.out.h ar.h assert.h bitstring.h complex.h cpio.h _ctype.h ctype.h \
 	db.h \
 	dirent.h dlfcn.h elf.h elf-hints.h err.h fmtmsg.h fnmatch.h fstab.h \
-	fts.h ftw.h getopt.h glob.h grp.h \
+	fts.h ftw.h getopt.h glob.h grp.h gssapi.h \
 	histedit.h ieeefp.h ifaddrs.h \
 	inttypes.h iso646.h kenv.h langinfo.h libgen.h limits.h link.h \
 	locale.h malloc.h memory.h monetary.h mpool.h mqueue.h \
diff --git a/include/gssapi.h b/include/gssapi.h
new file mode 100644
index 0000000..5557de8
--- /dev/null
+++ b/include/gssapi.h
@@ -0,0 +1,5 @@
+/* $FreeBSD$ */
+#ifdef __GNUC__
+#warning "this file includes <gssapi.h> which is deprecated, use <gssapi/gssapi.h> instead"
+#endif
+#include <gssapi/gssapi.h>
diff --git a/include/gssapi/Makefile b/include/gssapi/Makefile
new file mode 100644
index 0000000..8fb643f
--- /dev/null
+++ b/include/gssapi/Makefile
@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+NO_OBJ=
+INCS= gssapi.h
+INCSDIR= ${INCLUDEDIR}/gssapi
+
+.include <bsd.prog.mk>
diff --git a/include/gssapi/gssapi.h b/include/gssapi/gssapi.h
new file mode 100644
index 0000000..7509b04
--- /dev/null
+++ b/include/gssapi/gssapi.h
@@ -0,0 +1,756 @@
+/*
+ * 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
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _GSSAPI_GSSAPI_H_
+#define _GSSAPI_GSSAPI_H_
+
+/*
+ * First, include stddef.h to get size_t defined.
+ */
+#include <stddef.h>
+
+/*
+ * Include stdint.h to get explicitly sized data types.
+ */
+#include <stdint.h>
+
+#if 0
+/*
+ * If the platform supports the xom.h header file, it should be
+ * included here.
+ */
+#include <xom.h>
+#endif
+
+
+/*
+ * 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;
+
+/*
+ * The following type must be defined as the smallest natural
+ * unsigned integer supported by the platform that has at least
+ * 32 bits of precision.
+ */
+typedef uint32_t gss_uint32;
+
+
+#ifdef OM_STRING
+/*
+ * We have included the xom.h header file.  Verify that OM_uint32
+ * is defined correctly.
+ */
+
+#if sizeof(gss_uint32) != sizeof(OM_uint32)
+#error Incompatible definition of OM_uint32 from xom.h
+#endif
+
+typedef OM_object_identifier gss_OID_desc, *gss_OID;
+
+#else
+
+/*
+ * We can't use X/Open definitions, so roll our own.
+ */
+
+typedef gss_uint32 OM_uint32;
+
+typedef struct gss_OID_desc_struct {
+  OM_uint32 length;
+  void      *elements;
+} gss_OID_desc, *gss_OID;
+
+#endif
+
+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))
+
+/*
+ * 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_process_context_token
+	      (OM_uint32 *,            /* minor_status */
+	       const gss_ctx_id_t,     /* context_handle */
+	       const gss_buffer_t      /* token_buffer */
+	      );
+
+OM_uint32 gss_delete_sec_context
+	      (OM_uint32 *,            /* minor_status */
+	       gss_ctx_id_t *,         /* context_handle */
+	       gss_buffer_t            /* output_token */
+	      );
+
+OM_uint32 gss_context_time
+	      (OM_uint32 *,            /* minor_status */
+	       const gss_ctx_id_t,     /* context_handle */
+	       OM_uint32 *             /* time_rec */
+	      );
+
+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_indicate_mechs
+	      (OM_uint32 *,            /* minor_status */
+	       gss_OID_set *           /* mech_set */
+	      );
+
+OM_uint32 gss_compare_name
+	      (OM_uint32 *,            /* minor_status */
+	       const gss_name_t,       /* name1 */
+	       const gss_name_t,       /* name2 */
+	       int *                   /* name_equal */
+	      );
+
+OM_uint32 gss_display_name
+	      (OM_uint32 *,            /* minor_status */
+	       const gss_name_t,       /* input_name */
+	       gss_buffer_t,           /* output_name_buffer */
+	       gss_OID *               /* output_name_type */
+	      );
+
+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_inquire_cred
+	      (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 */
+	      );
+
+OM_uint32 gss_inquire_context (
+	       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 */
+	      );
+
+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_add_cred (
+	       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 */
+	      );
+
+OM_uint32 gss_inquire_cred_by_mech (
+	       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 */
+	      );
+
+OM_uint32 gss_export_sec_context (
+	       OM_uint32 *,            /* minor_status */
+	       gss_ctx_id_t *,         /* context_handle */
+	       gss_buffer_t            /* interprocess_token */
+	      );
+
+OM_uint32 gss_import_sec_context (
+	       OM_uint32 *,            /* minor_status */
+	       const gss_buffer_t,     /* interprocess_token */
+	       gss_ctx_id_t *          /* context_handle */
+	      );
+
+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_inquire_names_for_mech (
+	       OM_uint32 *,            /* minor_status */
+	       const gss_OID,          /* mechanism */
+	       gss_OID_set *           /* name_types */
+	      );
+
+OM_uint32 gss_inquire_mechs_for_name (
+	       OM_uint32 *,            /* minor_status */
+	       const gss_name_t,       /* input_name */
+	       gss_OID_set *           /* mech_types */
+	      );
+
+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 */
+	      );
+
+OM_uint32 gss_duplicate_name (
+	       OM_uint32 *,            /* minor_status */
+	       const gss_name_t,       /* src_name */
+	       gss_name_t *            /* dest_name */
+	      );
+
+/*
+ * The following routines are obsolete variants of gss_get_mic,
+ * gss_verify_mic, gss_wrap and gss_unwrap.  They should be
+ * provided by GSS-API V2 implementations for backwards
+ * compatibility with V1 applications.  Distinct entrypoints
+ * (as opposed to #defines) should be provided, both to allow
+ * GSS-API V1 applications to link against GSS-API V2 implementations,
+ * and to retain the slight parameter type differences between the
+ * obsolete versions of these routines and their current forms.
+ */
+
+OM_uint32 gss_sign
+	      (OM_uint32 *,       /* minor_status */
+	       gss_ctx_id_t,      /* context_handle */
+	       int,               /* qop_req */
+	       gss_buffer_t,      /* message_buffer */
+	       gss_buffer_t       /* message_token */
+	      );
+
+
+OM_uint32 gss_verify
+	      (OM_uint32 *,       /* minor_status */
+	       gss_ctx_id_t,      /* context_handle */
+	       gss_buffer_t,      /* message_buffer */
+	       gss_buffer_t,      /* token_buffer */
+	       int *              /* qop_state */
+	      );
+
+OM_uint32 gss_seal
+	      (OM_uint32 *,       /* minor_status */
+	       gss_ctx_id_t,      /* context_handle */
+	       int,               /* conf_req_flag */
+	       int,               /* qop_req */
+	       gss_buffer_t,      /* input_message_buffer */
+	       int *,             /* conf_state */
+	       gss_buffer_t       /* output_message_buffer */
+	      );
+
+
+OM_uint32 gss_unseal
+	      (OM_uint32 *,       /* minor_status */
+	       gss_ctx_id_t,      /* context_handle */
+	       gss_buffer_t,      /* input_message_buffer */
+	       gss_buffer_t,      /* output_message_buffer */
+	       int *,             /* conf_state */
+	       int *              /* qop_state */
+	      );
+
+/*
+ * kerberos mechanism specific functions
+ */
+struct krb5_ccache_data;
+#define GSS_C_KRB5_COMPAT_DES3_MIC 1
+
+OM_uint32 gsskrb5_register_acceptor_identity
+	      (const char *	  /* identity */
+	      );
+
+OM_uint32 gss_krb5_copy_ccache
+	      (OM_uint32 *,	  /* minor_status */
+	       gss_cred_id_t,	  /* cred_handle */
+	       struct krb5_ccache_data * /* out */
+	      );
+
+OM_uint32 gss_krb5_compat_des3_mic
+	      (OM_uint32 *,	  /* minor_status */
+	       gss_ctx_id_t,	  /* context_handle */
+	       int		  /* flag */
+	      );
+
+#endif /* _GSSAPI_GSSAPI_H_ */