Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 926 insertions, 0 deletions

diff --git a/third_party/heimdal/lib/gssapi/mech/gss_krb5.c b/third_party/heimdal/lib/gssapi/mech/gss_krb5.c
new file mode 100644
index 0000000..21bb2bf
--- /dev/null
+++ b/third_party/heimdal/lib/gssapi/mech/gss_krb5.c
@@ -0,0 +1,926 @@
+/*-
+ * 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/gss_krb5.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
+ */
+
+#include "mech_locl.h"
+#include "krb5/gsskrb5_locl.h"
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_copy_ccache(OM_uint32 *minor_status,
+		     gss_cred_id_t cred,
+		     krb5_ccache out)
+{
+    gss_key_value_element_desc cred_store_kvs[1];
+    gss_key_value_set_desc cred_store;
+    krb5_context context;
+    OM_uint32 major = GSS_S_FAILURE;
+    char *fullname = NULL;
+
+    GSSAPI_KRB5_INIT(&context);
+    *minor_status = krb5_cc_get_full_name(context, out, &fullname);
+    if (*minor_status == 0) {
+        cred_store_kvs[0].key = "ccache";
+        cred_store_kvs[0].value = fullname;
+        cred_store.count = 1;
+        cred_store.elements = cred_store_kvs;
+        major = gss_store_cred_into2(minor_status, cred, GSS_C_INITIATE,
+                                     GSS_KRB5_MECHANISM,
+                                     GSS_C_STORE_CRED_OVERWRITE, &cred_store,
+                                     NULL, NULL, NULL);
+        free(fullname);
+    }
+    return major;
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_import_cred(OM_uint32 *minor_status,
+		     krb5_ccache id,
+		     krb5_principal keytab_principal,
+		     krb5_keytab keytab,
+		     gss_cred_id_t *cred)
+{
+    gss_buffer_desc buffer;
+    OM_uint32 major_status;
+    krb5_context context;
+    krb5_error_code ret;
+    krb5_storage *sp;
+    krb5_data data;
+    char *str;
+
+    *cred = GSS_C_NO_CREDENTIAL;
+
+    ret = krb5_init_context(&context);
+    if (ret) {
+	*minor_status = ret;
+	return GSS_S_FAILURE;
+    }
+
+    sp = krb5_storage_emem();
+    if (sp == NULL) {
+	*minor_status = ENOMEM;
+	major_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+    if (id) {
+	ret = krb5_cc_get_full_name(context, id, &str);
+	if (ret == 0) {
+	    ret = krb5_store_string(sp, str);
+	    free(str);
+	}
+    } else
+	ret = krb5_store_string(sp, "");
+    if (ret) {
+	*minor_status = ret;
+	major_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+    if (keytab_principal) {
+	ret = krb5_unparse_name(context, keytab_principal, &str);
+	if (ret == 0) {
+	    ret = krb5_store_string(sp, str);
+	    free(str);
+	}
+    } else
+	krb5_store_string(sp, "");
+    if (ret) {
+	*minor_status = ret;
+	major_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+
+    if (keytab) {
+	ret = krb5_kt_get_full_name(context, keytab, &str);
+	if (ret == 0) {
+	    ret = krb5_store_string(sp, str);
+	    free(str);
+	}
+    } else
+	krb5_store_string(sp, "");
+    if (ret) {
+	*minor_status = ret;
+	major_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+    ret = krb5_storage_to_data(sp, &data);
+    if (ret) {
+	*minor_status = ret;
+	major_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+    buffer.value = data.data;
+    buffer.length = data.length;
+
+    major_status = gss_set_cred_option(minor_status,
+				       cred,
+				       GSS_KRB5_IMPORT_CRED_X,
+				       &buffer);
+    krb5_data_free(&data);
+out:
+    if (sp)
+	krb5_storage_free(sp);
+    krb5_free_context(context);
+    return major_status;
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_register_acceptor_identity(const char *identity)
+{
+	gssapi_mech_interface m;
+	gss_buffer_desc buffer;
+	OM_uint32 junk;
+
+	_gss_load_mech();
+
+	buffer.value = rk_UNCONST(identity);
+	buffer.length = strlen(identity);
+
+	m = __gss_get_mechanism(GSS_KRB5_MECHANISM);
+	if (m == NULL || m->gm_set_sec_context_option == NULL)
+	    return GSS_S_FAILURE;
+
+	return m->gm_set_sec_context_option(&junk, NULL,
+	        GSS_KRB5_REGISTER_ACCEPTOR_IDENTITY_X, &buffer);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+krb5_gss_register_acceptor_identity(const char *identity)
+{
+    return gsskrb5_register_acceptor_identity(identity);
+}
+
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_set_dns_canonicalize(int flag)
+{
+        struct _gss_mech_switch	*m;
+	gss_buffer_desc buffer;
+	OM_uint32 junk;
+	char b = (flag != 0);
+
+	_gss_load_mech();
+
+	buffer.value = &b;
+	buffer.length = sizeof(b);
+
+	HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+		if (m->gm_mech.gm_set_sec_context_option == NULL)
+			continue;
+		m->gm_mech.gm_set_sec_context_option(&junk, NULL,
+		    GSS_KRB5_SET_DNS_CANONICALIZE_X, &buffer);
+	}
+
+	return (GSS_S_COMPLETE);
+}
+
+
+
+static krb5_error_code
+set_key(krb5_keyblock *keyblock, gss_krb5_lucid_key_t *key)
+{
+    key->type = keyblock->keytype;
+    key->length = keyblock->keyvalue.length;
+    key->data = malloc(key->length);
+    if (key->data == NULL && key->length != 0)
+	return ENOMEM;
+    memcpy(key->data, keyblock->keyvalue.data, key->length);
+    return 0;
+}
+
+static void
+free_key(gss_krb5_lucid_key_t *key)
+{
+    memset(key->data, 0, key->length);
+    free(key->data);
+    memset(key, 0, sizeof(*key));
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_export_lucid_sec_context(OM_uint32 *minor_status,
+				  gss_ctx_id_t *context_handle,
+				  OM_uint32 version,
+				  void **rctx)
+{
+    krb5_context context = NULL;
+    krb5_error_code ret;
+    gss_buffer_set_t data_set = GSS_C_NO_BUFFER_SET;
+    OM_uint32 major_status;
+    gss_krb5_lucid_context_v1_t *ctx = NULL;
+    krb5_storage *sp = NULL;
+    uint32_t num;
+
+    if (context_handle == NULL
+	|| *context_handle == GSS_C_NO_CONTEXT
+	|| version != 1)
+    {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    major_status =
+	gss_inquire_sec_context_by_oid (minor_status,
+					*context_handle,
+					GSS_KRB5_EXPORT_LUCID_CONTEXT_V1_X,
+					&data_set);
+    if (major_status)
+	return major_status;
+
+    if (data_set == GSS_C_NO_BUFFER_SET || data_set->count != 1) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    ret = krb5_init_context(&context);
+    if (ret)
+	goto out;
+
+    ctx = calloc(1, sizeof(*ctx));
+    if (ctx == NULL) {
+	ret = ENOMEM;
+	goto out;
+    }
+
+    sp = krb5_storage_from_mem(data_set->elements[0].value,
+			       data_set->elements[0].length);
+    if (sp == NULL) {
+	ret = ENOMEM;
+	goto out;
+    }
+
+    ret = krb5_ret_uint32(sp, &num);
+    if (ret) goto out;
+    if (num != 1) {
+	ret = EINVAL;
+	goto out;
+    }
+    ctx->version = 1;
+    /* initiator */
+    ret = krb5_ret_uint32(sp, &ctx->initiate);
+    if (ret) goto out;
+    /* endtime */
+    ret = krb5_ret_uint32(sp, &ctx->endtime);
+    if (ret) goto out;
+    /* send_seq */
+    ret = krb5_ret_uint32(sp, &num);
+    if (ret) goto out;
+    ctx->send_seq = ((uint64_t)num) << 32;
+    ret = krb5_ret_uint32(sp, &num);
+    if (ret) goto out;
+    ctx->send_seq |= num;
+    /* recv_seq */
+    ret = krb5_ret_uint32(sp, &num);
+    if (ret) goto out;
+    ctx->recv_seq = ((uint64_t)num) << 32;
+    ret = krb5_ret_uint32(sp, &num);
+    if (ret) goto out;
+    ctx->recv_seq |= num;
+    /* protocol */
+    ret = krb5_ret_uint32(sp, &ctx->protocol);
+    if (ret) goto out;
+    if (ctx->protocol == 0) {
+	krb5_keyblock key;
+
+	/* sign_alg */
+	ret = krb5_ret_uint32(sp, &ctx->rfc1964_kd.sign_alg);
+	if (ret) goto out;
+	/* seal_alg */
+	ret = krb5_ret_uint32(sp, &ctx->rfc1964_kd.seal_alg);
+	if (ret) goto out;
+	/* ctx_key */
+	ret = krb5_ret_keyblock(sp, &key);
+	if (ret) goto out;
+	ret = set_key(&key, &ctx->rfc1964_kd.ctx_key);
+	krb5_free_keyblock_contents(context, &key);
+	if (ret) goto out;
+    } else if (ctx->protocol == 1) {
+	krb5_keyblock key;
+
+	/* acceptor_subkey */
+	ret = krb5_ret_uint32(sp, &ctx->cfx_kd.have_acceptor_subkey);
+	if (ret) goto out;
+	/* ctx_key */
+	ret = krb5_ret_keyblock(sp, &key);
+	if (ret) goto out;
+	ret = set_key(&key, &ctx->cfx_kd.ctx_key);
+	krb5_free_keyblock_contents(context, &key);
+	if (ret) goto out;
+	/* acceptor_subkey */
+	if (ctx->cfx_kd.have_acceptor_subkey) {
+	    ret = krb5_ret_keyblock(sp, &key);
+	    if (ret) goto out;
+	    ret = set_key(&key, &ctx->cfx_kd.acceptor_subkey);
+	    krb5_free_keyblock_contents(context, &key);
+	    if (ret) goto out;
+	}
+    } else {
+	ret = EINVAL;
+	goto out;
+    }
+
+    *rctx = ctx;
+
+out:
+    _gss_secure_release_buffer_set(minor_status, &data_set);
+    if (sp)
+	krb5_storage_free(sp);
+    if (context)
+	krb5_free_context(context);
+
+    if (ret) {
+	OM_uint32 junk;
+	if (ctx)
+	    gss_krb5_free_lucid_sec_context(&junk, ctx);
+
+	*minor_status = ret;
+	return GSS_S_FAILURE;
+    }
+    *minor_status = 0;
+    return GSS_S_COMPLETE;
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_free_lucid_sec_context(OM_uint32 *minor_status, void *c)
+{
+    gss_krb5_lucid_context_v1_t *ctx = c;
+
+    if (ctx->version != 1) {
+	if (minor_status)
+	    *minor_status = 0;
+	return GSS_S_FAILURE;
+    }
+
+    if (ctx->protocol == 0) {
+	free_key(&ctx->rfc1964_kd.ctx_key);
+    } else if (ctx->protocol == 1) {
+	free_key(&ctx->cfx_kd.ctx_key);
+	if (ctx->cfx_kd.have_acceptor_subkey)
+	    free_key(&ctx->cfx_kd.acceptor_subkey);
+    }
+    free(ctx);
+    if (minor_status)
+	*minor_status = 0;
+    return GSS_S_COMPLETE;
+}
+
+/*
+ *
+ */
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_set_allowable_enctypes(OM_uint32 *minor_status,
+				gss_cred_id_t cred,
+				OM_uint32 num_enctypes,
+				int32_t *enctypes)
+{
+    krb5_error_code ret;
+    OM_uint32 maj_status;
+    gss_buffer_desc buffer;
+    krb5_storage *sp;
+    krb5_data data;
+    size_t i;
+
+    sp = krb5_storage_emem();
+    if (sp == NULL) {
+	*minor_status = ENOMEM;
+	maj_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+    for (i = 0; i < num_enctypes; i++) {
+	ret = krb5_store_int32(sp, enctypes[i]);
+	if (ret) {
+	    *minor_status = ret;
+	    maj_status = GSS_S_FAILURE;
+	    goto out;
+	}
+    }
+
+    ret = krb5_storage_to_data(sp, &data);
+    if (ret) {
+	*minor_status = ret;
+	maj_status = GSS_S_FAILURE;
+	goto out;
+    }
+
+    buffer.value = data.data;
+    buffer.length = data.length;
+
+    maj_status = gss_set_cred_option(minor_status,
+				     &cred,
+				     GSS_KRB5_SET_ALLOWABLE_ENCTYPES_X,
+				     &buffer);
+    krb5_data_free(&data);
+out:
+    if (sp)
+	krb5_storage_free(sp);
+    return maj_status;
+}
+
+/*
+ *
+ */
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_set_send_to_kdc(struct gsskrb5_send_to_kdc *c)
+{
+    struct _gss_mech_switch *m;
+    gss_buffer_desc buffer;
+    OM_uint32 junk;
+
+    _gss_load_mech();
+
+    if (c) {
+	buffer.value = c;
+	buffer.length = sizeof(*c);
+    } else {
+	buffer.value = NULL;
+	buffer.length = 0;
+    }
+
+    HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+	if (m->gm_mech.gm_set_sec_context_option == NULL)
+	    continue;
+	m->gm_mech.gm_set_sec_context_option(&junk, NULL,
+	    GSS_KRB5_SEND_TO_KDC_X, &buffer);
+    }
+
+    return (GSS_S_COMPLETE);
+}
+
+/*
+ *
+ */
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_ccache_name(OM_uint32 *minor_status,
+		     const char *name,
+		     const char **out_name)
+{
+    struct _gss_mech_switch *m;
+    gss_buffer_desc buffer = GSS_C_EMPTY_BUFFER;
+    OM_uint32 major_status;
+    struct gsskrb5_ccache_name_args args;
+
+    _gss_load_mech();
+
+    *minor_status = 0;
+
+    if (out_name)
+	*out_name = NULL;
+
+    args.name = name;
+    args.out_name = NULL;
+
+    buffer.value = &args;
+    buffer.length = sizeof(args);
+
+    major_status = GSS_S_UNAVAILABLE;
+
+    HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+	OM_uint32 mech_major, mech_minor;
+
+	if (m->gm_mech.gm_set_sec_context_option == NULL)
+	    continue;
+
+	mech_major = m->gm_mech.gm_set_sec_context_option(&mech_minor,
+	    NULL, GSS_KRB5_CCACHE_NAME_X, &buffer);
+	if (mech_major != GSS_S_UNAVAILABLE) {
+	    major_status = mech_major;
+	    *minor_status = mech_minor;
+	    break;
+	}
+    }
+
+    if (out_name)
+        *out_name = args.out_name;
+
+    return major_status;
+}
+
+
+/*
+ *
+ */
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_extract_authtime_from_sec_context(OM_uint32 *minor_status,
+					  gss_ctx_id_t context_handle,
+					  time_t *authtime)
+{
+    gss_buffer_set_t data_set = GSS_C_NO_BUFFER_SET;
+    OM_uint32 maj_stat;
+
+    if (context_handle == GSS_C_NO_CONTEXT) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    maj_stat =
+	gss_inquire_sec_context_by_oid (minor_status,
+					context_handle,
+					GSS_KRB5_GET_AUTHTIME_X,
+					&data_set);
+    if (maj_stat)
+	return maj_stat;
+
+    if (data_set == GSS_C_NO_BUFFER_SET) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    if (data_set->count != 1) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    if (data_set->elements[0].length != SIZEOF_TIME_T) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+#if SIZEOF_TIME_T == 8
+    _gss_mg_decode_le_uint64(data_set->elements[0].value, (uint64_t *)authtime);
+#elif SIZEOF_TIME_T == 4
+    _gss_mg_decode_le_uint32(data_set->elements[0].value, (uint32_t *)authtime);
+#else
+#error set SIZEOF_TIME_T for your platform
+#endif
+
+    gss_release_buffer_set(minor_status, &data_set);
+
+    *minor_status = 0;
+    return GSS_S_COMPLETE;
+}
+
+/*
+ *
+ */
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_extract_authz_data_from_sec_context(OM_uint32 *minor_status,
+					    gss_ctx_id_t context_handle,
+					    int ad_type,
+					    gss_buffer_t ad_data)
+{
+    gss_buffer_set_t data_set = GSS_C_NO_BUFFER_SET;
+    OM_uint32 maj_stat, tmp;
+    gss_OID_desc oid_flat;
+    heim_oid baseoid, oid;
+    size_t size;
+
+    if (context_handle == GSS_C_NO_CONTEXT) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    /* All this to append an integer to an oid... */
+
+    if (der_get_oid(GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->elements,
+		    GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->length,
+		    &baseoid, NULL) != 0) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    oid.length = baseoid.length + 1;
+    oid.components = calloc(oid.length, sizeof(*oid.components));
+    if (oid.components == NULL) {
+	der_free_oid(&baseoid);
+
+	*minor_status = ENOMEM;
+	return GSS_S_FAILURE;
+    }
+
+    memcpy(oid.components, baseoid.components,
+	   baseoid.length * sizeof(*baseoid.components));
+
+    der_free_oid(&baseoid);
+
+    oid.components[oid.length - 1] = ad_type;
+
+    oid_flat.length = (OM_uint32)der_length_oid(&oid);
+    oid_flat.elements = malloc(oid_flat.length);
+    if (oid_flat.elements == NULL) {
+	free(oid.components);
+	*minor_status = ENOMEM;
+	return GSS_S_FAILURE;
+    }
+
+    if (der_put_oid((unsigned char *)oid_flat.elements + oid_flat.length - 1,
+		    oid_flat.length, &oid, &size) != 0) {
+	free(oid.components);
+	_gss_free_oid(&tmp, &oid_flat);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+    if (oid_flat.length != size)
+	abort();
+
+    free(oid.components);
+
+    /* FINALLY, we have the OID */
+
+    maj_stat = gss_inquire_sec_context_by_oid (minor_status,
+					       context_handle,
+					       &oid_flat,
+					       &data_set);
+
+    _gss_free_oid(&tmp, &oid_flat);
+
+    if (maj_stat)
+	return maj_stat;
+
+    if (data_set == GSS_C_NO_BUFFER_SET || data_set->count != 1) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    ad_data->value = malloc(data_set->elements[0].length);
+    if (ad_data->value == NULL) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = ENOMEM;
+	return GSS_S_FAILURE;
+    }
+
+    ad_data->length = data_set->elements[0].length;
+    memcpy(ad_data->value, data_set->elements[0].value, ad_data->length);
+    gss_release_buffer_set(minor_status, &data_set);
+
+    *minor_status = 0;
+    return GSS_S_COMPLETE;
+}
+
+/*
+ *
+ */
+
+static OM_uint32
+gsskrb5_extract_key(OM_uint32 *minor_status,
+		    gss_ctx_id_t context_handle,
+		    const gss_OID oid,
+		    krb5_keyblock **keyblock)
+{
+    krb5_error_code ret;
+    gss_buffer_set_t data_set = GSS_C_NO_BUFFER_SET;
+    OM_uint32 major_status;
+    krb5_context context = NULL;
+    krb5_storage *sp = NULL;
+
+    if (context_handle == GSS_C_NO_CONTEXT) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    ret = krb5_init_context(&context);
+    if(ret) {
+	*minor_status = ret;
+	return GSS_S_FAILURE;
+    }
+
+    major_status =
+	gss_inquire_sec_context_by_oid (minor_status,
+					context_handle,
+					oid,
+					&data_set);
+    if (major_status)
+	return major_status;
+
+    if (data_set == GSS_C_NO_BUFFER_SET || data_set->count != 1) {
+	_gss_secure_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    sp = krb5_storage_from_mem(data_set->elements[0].value,
+			       data_set->elements[0].length);
+    if (sp == NULL) {
+	ret = ENOMEM;
+	goto out;
+    }
+
+    *keyblock = calloc(1, sizeof(**keyblock));
+    if (*keyblock == NULL) {
+	ret = ENOMEM;
+	goto out;
+    }
+
+    ret = krb5_ret_keyblock(sp, *keyblock);
+
+out:
+    _gss_secure_release_buffer_set(minor_status, &data_set);
+    if (sp)
+	krb5_storage_free(sp);
+    if (ret && keyblock) {
+	krb5_free_keyblock(context, *keyblock);
+	*keyblock = NULL;
+    }
+    if (context)
+	krb5_free_context(context);
+
+    *minor_status = ret;
+    if (ret)
+	return GSS_S_FAILURE;
+
+    return GSS_S_COMPLETE;
+}
+
+/*
+ *
+ */
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_extract_service_keyblock(OM_uint32 *minor_status,
+				 gss_ctx_id_t context_handle,
+				 krb5_keyblock **keyblock)
+{
+    return gsskrb5_extract_key(minor_status,
+			       context_handle,
+			       GSS_KRB5_GET_SERVICE_KEYBLOCK_X,
+			       keyblock);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_get_initiator_subkey(OM_uint32 *minor_status,
+			     gss_ctx_id_t context_handle,
+			     krb5_keyblock **keyblock)
+{
+    return gsskrb5_extract_key(minor_status,
+			       context_handle,
+			       GSS_KRB5_GET_INITIATOR_SUBKEY_X,
+			       keyblock);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_get_subkey(OM_uint32 *minor_status,
+		   gss_ctx_id_t context_handle,
+		   krb5_keyblock **keyblock)
+{
+    return gsskrb5_extract_key(minor_status,
+			       context_handle,
+			       GSS_KRB5_GET_SUBKEY_X,
+			       keyblock);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_set_default_realm(const char *realm)
+{
+        struct _gss_mech_switch	*m;
+	gss_buffer_desc buffer;
+	OM_uint32 junk;
+
+	_gss_load_mech();
+
+	buffer.value = rk_UNCONST(realm);
+	buffer.length = strlen(realm);
+
+	HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+		if (m->gm_mech.gm_set_sec_context_option == NULL)
+			continue;
+		m->gm_mech.gm_set_sec_context_option(&junk, NULL,
+		    GSS_KRB5_SET_DEFAULT_REALM_X, &buffer);
+	}
+
+	return (GSS_S_COMPLETE);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gss_krb5_get_tkt_flags(OM_uint32 *minor_status,
+		       gss_ctx_id_t context_handle,
+		       OM_uint32 *tkt_flags)
+{
+
+    OM_uint32 major_status;
+    gss_buffer_set_t data_set = GSS_C_NO_BUFFER_SET;
+
+    if (context_handle == GSS_C_NO_CONTEXT) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    major_status =
+	gss_inquire_sec_context_by_oid (minor_status,
+					context_handle,
+					GSS_KRB5_GET_TKT_FLAGS_X,
+					&data_set);
+    if (major_status)
+	return major_status;
+
+    if (data_set == GSS_C_NO_BUFFER_SET ||
+	data_set->count != 1 ||
+	data_set->elements[0].length < 4) {
+	gss_release_buffer_set(minor_status, &data_set);
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    _gss_mg_decode_le_uint32(data_set->elements[0].value, tkt_flags);
+
+    gss_release_buffer_set(minor_status, &data_set);
+    return GSS_S_COMPLETE;
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_set_time_offset(int offset)
+{
+        struct _gss_mech_switch	*m;
+	gss_buffer_desc buffer;
+	OM_uint32 junk;
+	int32_t o = offset;
+
+	_gss_load_mech();
+
+	buffer.value = &o;
+	buffer.length = sizeof(o);
+
+	HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+		if (m->gm_mech.gm_set_sec_context_option == NULL)
+			continue;
+		m->gm_mech.gm_set_sec_context_option(&junk, NULL,
+		    GSS_KRB5_SET_TIME_OFFSET_X, &buffer);
+	}
+
+	return (GSS_S_COMPLETE);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_get_time_offset(int *offset)
+{
+        struct _gss_mech_switch	*m;
+	gss_buffer_desc buffer;
+	OM_uint32 maj_stat, junk;
+	int32_t o;
+
+	_gss_load_mech();
+
+	buffer.value = &o;
+	buffer.length = sizeof(o);
+
+	HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+		if (m->gm_mech.gm_set_sec_context_option == NULL)
+			continue;
+		maj_stat = m->gm_mech.gm_set_sec_context_option(&junk, NULL,
+		    GSS_KRB5_GET_TIME_OFFSET_X, &buffer);
+
+		if (maj_stat == GSS_S_COMPLETE) {
+			*offset = o;
+			return maj_stat;
+		}
+	}
+
+	return (GSS_S_UNAVAILABLE);
+}
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gsskrb5_plugin_register(struct gsskrb5_krb5_plugin *c)
+{
+    struct _gss_mech_switch *m;
+    gss_buffer_desc buffer;
+    OM_uint32 junk;
+
+    _gss_load_mech();
+
+    buffer.value = c;
+    buffer.length = sizeof(*c);
+
+    HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
+	if (m->gm_mech.gm_set_sec_context_option == NULL)
+	    continue;
+	m->gm_mech.gm_set_sec_context_option(&junk, NULL,
+	    GSS_KRB5_PLUGIN_REGISTER_X, &buffer);
+    }
+
+    return (GSS_S_COMPLETE);
+}