--Subproject commit 2d5a0004454cee27bd0e4842404fd5d0f3e23ef2
++Subproject commit 755d9d20aadc1a140d01583b586f5a6d29c3a670
--Subproject commit 88adb3a99af7ac04c5f07174acdd54fbf13fee01
++Subproject commit b07f9ade9bad2ec38d4dc9f6592f64dff2e1b120
--- /dev/null
- gss_OID internalizedOid = GSS_C_NO_OID;
-
- *minor = 0;
-
- if (gssEapInternalizeOid(*oid, &internalizedOid)) {
- /* OID was internalized, so we can mark it as "freed" */
- *oid = GSS_C_NO_OID;
- return GSS_S_COMPLETE;
- }
-
- /* we don't know about this OID */
- return GSS_S_CONTINUE_NEEDED;
+/*
+ * Copyright (c) 2010, JANET(UK)
+ * 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.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * Mark an internalized OID as not required to be released.
+ */
+
+#include "gssapiP_eap.h"
+
+OM_uint32
+gss_internal_release_oid(OM_uint32 *minor,
+ gss_OID *oid)
+{
++ return gssEapReleaseOid(minor, oid);
+}
--- /dev/null
+/*
+ * Copyright (c) 2010, JANET(UK)
+ * 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.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+/*
+ * Portions Copyright 2003-2010 Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ *
+ */
+
+/*
+ * Utility functions.
+ */
+
+#ifndef _UTIL_H_
+#define _UTIL_H_ 1
+
+#include <sys/param.h>
+#include <string.h>
+#include <errno.h>
+
+#include <krb5.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef MIN
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* util_buffer.c */
+OM_uint32
+makeStringBuffer(OM_uint32 *minor,
+ const char *string,
+ gss_buffer_t buffer);
+
+OM_uint32
+bufferToString(OM_uint32 *minor,
+ const gss_buffer_t buffer,
+ char **pString);
+
+OM_uint32
+duplicateBuffer(OM_uint32 *minor,
+ const gss_buffer_t src,
+ gss_buffer_t dst);
+
+static inline int
+bufferEqual(const gss_buffer_t b1, const gss_buffer_t b2)
+{
+ return (b1->length == b2->length &&
+ memcmp(b1->value, b2->value, b2->length) == 0);
+}
+
+static inline int
+bufferEqualString(const gss_buffer_t b1, const char *s)
+{
+ gss_buffer_desc b2;
+
+ b2.length = strlen(s);
+ b2.value = (char *)s;
+
+ return bufferEqual(b1, &b2);
+}
+
+/* util_cksum.c */
+int
+gssEapSign(krb5_context context,
+ krb5_cksumtype type,
+ size_t rrc,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto crypto,
+#else
+ krb5_keyblock *key,
+#endif
+ krb5_keyusage sign_usage,
+ gss_iov_buffer_desc *iov,
+ int iov_count);
+
+int
+gssEapVerify(krb5_context context,
+ krb5_cksumtype type,
+ size_t rrc,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto crypto,
+#else
+ krb5_keyblock *key,
+#endif
+ krb5_keyusage sign_usage,
+ gss_iov_buffer_desc *iov,
+ int iov_count,
+ int *valid);
+
+#if 0
+OM_uint32
+gssEapEncodeGssChannelBindings(OM_uint32 *minor,
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t encodedBindings);
+#endif
+
+/* util_context.c */
+#define EAP_EXPORT_CONTEXT_V1 1
+
+enum gss_eap_token_type {
+ TOK_TYPE_NONE = 0x0000, /* no token */
+ TOK_TYPE_MIC = 0x0404, /* RFC 4121 MIC token */
+ TOK_TYPE_WRAP = 0x0504, /* RFC 4121 wrap token */
+ TOK_TYPE_EXPORT_NAME = 0x0401, /* RFC 2743 exported name */
+ TOK_TYPE_EXPORT_NAME_COMPOSITE = 0x0402, /* exported composite name */
+ TOK_TYPE_DELETE_CONTEXT = 0x0405, /* RFC 2743 delete context */
+ TOK_TYPE_EAP_RESP = 0x0601, /* EAP response */
+ TOK_TYPE_EAP_REQ = 0x0602, /* EAP request */
+ TOK_TYPE_EXT_REQ = 0x0603, /* GSS EAP extensions request */
+ TOK_TYPE_EXT_RESP = 0x0604, /* GSS EAP extensions response */
+ TOK_TYPE_GSS_REAUTH = 0x0605, /* GSS EAP fast reauthentication token */
+ TOK_TYPE_CONTEXT_ERR = 0x0606, /* context error */
+};
+
+OM_uint32 gssEapAllocContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
+OM_uint32 gssEapReleaseContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
+
+OM_uint32
+gssEapMakeToken(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ const gss_buffer_t innerToken,
+ enum gss_eap_token_type tokenType,
+ gss_buffer_t outputToken);
+
+OM_uint32
+gssEapVerifyToken(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ const gss_buffer_t inputToken,
+ enum gss_eap_token_type *tokenType,
+ gss_buffer_t innerInputToken);
+
+OM_uint32
+gssEapContextTime(OM_uint32 *minor,
+ gss_ctx_id_t context_handle,
+ OM_uint32 *time_rec);
+
+OM_uint32
+gssEapDisplayName(OM_uint32 *minor,
+ gss_name_t name,
+ gss_buffer_t output_name_buffer,
+ gss_OID *output_name_type);
+
+/* util_cred.c */
+OM_uint32 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred);
+OM_uint32 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred);
+
+OM_uint32
+gssEapAcquireCred(OM_uint32 *minor,
+ const gss_name_t desiredName,
+ const gss_buffer_t password,
+ OM_uint32 timeReq,
+ const gss_OID_set desiredMechs,
+ int cred_usage,
+ gss_cred_id_t *pCred,
+ gss_OID_set *pActualMechs,
+ OM_uint32 *timeRec);
+
+int gssEapCredAvailable(gss_cred_id_t cred, gss_OID mech);
+
+/* util_crypt.c */
+int
+gssEapEncrypt(krb5_context context, int dce_style, size_t ec,
+ size_t rrc,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto crypto,
+#else
+ krb5_keyblock *key,
+#endif
+ int usage,
+ gss_iov_buffer_desc *iov, int iov_count);
+
+int
+gssEapDecrypt(krb5_context context, int dce_style, size_t ec,
+ size_t rrc,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto crypto,
+#else
+ krb5_keyblock *key,
+#endif
+ int usage,
+ gss_iov_buffer_desc *iov, int iov_count);
+
+int
+gssEapMapCryptoFlag(OM_uint32 type);
+
+gss_iov_buffer_t
+gssEapLocateIov(gss_iov_buffer_desc *iov,
+ int iov_count,
+ OM_uint32 type);
+
+void
+gssEapIovMessageLength(gss_iov_buffer_desc *iov,
+ int iov_count,
+ size_t *data_length,
+ size_t *assoc_data_length);
+
+void
+gssEapReleaseIov(gss_iov_buffer_desc *iov, int iov_count);
+
+int
+gssEapIsIntegrityOnly(gss_iov_buffer_desc *iov, int iov_count);
+
+int
+gssEapAllocIov(gss_iov_buffer_t iov, size_t size);
+
+OM_uint32
+gssEapDeriveRfc3961Key(OM_uint32 *minor,
+ const unsigned char *key,
+ size_t keyLength,
+ krb5_enctype enctype,
+ krb5_keyblock *pKey);
+
+/* util_exts.c */
+#define EXT_FLAG_CRITICAL 0x80000000 /* critical, wire flag */
+#define EXT_FLAG_VERIFIED 0x40000000 /* verified, API flag */
+
+#define EXT_TYPE_GSS_CHANNEL_BINDINGS 0x00000000
+#define EXT_TYPE_REAUTH_CREDS 0x00000001
+#define EXT_TYPE_MASK (~(EXT_FLAG_CRITICAL | EXT_FLAG_VERIFIED))
+
+struct gss_eap_extension_provider {
+ OM_uint32 type;
+ int critical; /* client */
+ int required; /* server */
+ OM_uint32 (*make)(OM_uint32 *,
+ gss_cred_id_t,
+ gss_ctx_id_t,
+ gss_channel_bindings_t,
+ gss_buffer_t);
+ OM_uint32 (*verify)(OM_uint32 *,
+ gss_cred_id_t,
+ gss_ctx_id_t,
+ gss_channel_bindings_t,
+ const gss_buffer_t);
+};
+
+OM_uint32
+gssEapMakeExtensions(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t buffer);
+
+OM_uint32
+gssEapVerifyExtensions(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_channel_bindings_t chanBindings,
+ const gss_buffer_t buffer);
+
+/* util_krb.c */
+#ifdef HAVE_HEIMDAL_VERSION
+
+#define KRB_TIME_FOREVER ((time_t)~0L)
+
+#define KRB_KEY_TYPE(key) ((key)->keytype)
+#define KRB_KEY_DATA(key) ((key)->keyvalue.data)
+#define KRB_KEY_LENGTH(key) ((key)->keyvalue.length)
+
+#define KRB_PRINC_LENGTH(princ) ((princ)->name.name_string.len)
+#define KRB_PRINC_TYPE(princ) ((princ)->name.name_type)
+#define KRB_PRINC_NAME(princ) ((princ)->name.name_string.val)
+#define KRB_PRINC_REALM(princ) ((princ)->realm)
+
+#define KRB_KT_ENT_KEYBLOCK(e) (&(e)->keyblock)
+#define KRB_KT_ENT_FREE(c, e) krb5_kt_free_entry((c), (e))
+
+#define KRB_CRYPTO_CONTEXT(ctx) (krbCrypto)
+
+#else
+
+#define KRB_TIME_FOREVER KRB5_INT32_MAX
+
+#define KRB_KEY_TYPE(key) ((key)->enctype)
+#define KRB_KEY_DATA(key) ((key)->contents)
+#define KRB_KEY_LENGTH(key) ((key)->length)
+
+#define KRB_PRINC_LENGTH(princ) (krb5_princ_size(NULL, (princ)))
+#define KRB_PRINC_TYPE(princ) (krb5_princ_type(NULL, (princ)))
+#define KRB_PRINC_NAME(princ) (krb5_princ_name(NULL, (princ)))
+#define KRB_PRINC_REALM(princ) (krb5_princ_realm(NULL, (princ)))
+
+#define KRB_KT_ENT_KEYBLOCK(e) (&(e)->key)
+#define KRB_KT_ENT_FREE(c, e) krb5_free_keytab_entry_contents((c), (e))
+
+#define KRB_CRYPTO_CONTEXT(ctx) (&(ctx)->rfc3961Key)
+
+#endif /* HAVE_HEIMDAL_VERSION */
+
+#define KRB_KEY_INIT(key) do { \
+ KRB_KEY_TYPE(key) = ENCTYPE_NULL; \
+ KRB_KEY_DATA(key) = NULL; \
+ KRB_KEY_LENGTH(key) = 0; \
+ } while (0)
+
+#ifdef HAVE_HEIMDAL_VERSION
+#define GSS_IOV_BUFFER_FLAG_ALLOCATE GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATE
+#define GSS_IOV_BUFFER_FLAG_ALLOCATED GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATED
+
+#define GSS_S_CRED_UNAVAIL GSS_S_FAILURE
+#endif
+
+#define GSSEAP_KRB_INIT(ctx) do { \
+ OM_uint32 tmpMajor; \
+ \
+ tmpMajor = gssEapKerberosInit(minor, ctx); \
+ if (GSS_ERROR(tmpMajor)) { \
+ return tmpMajor; \
+ } \
+ } while (0)
+
+OM_uint32
+gssEapKerberosInit(OM_uint32 *minor, krb5_context *context);
+
+OM_uint32
+rfc3961ChecksumTypeForKey(OM_uint32 *minor,
+ krb5_keyblock *key,
+ krb5_cksumtype *cksumtype);
+
+krb5_const_principal
+krbAnonymousPrincipal(void);
+
+krb5_error_code
+krbCryptoLength(krb5_context krbContext,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto,
+#else
+ krb5_keyblock *key,
+#endif
+ int type,
+ size_t *length);
+
+krb5_error_code
+krbPaddingLength(krb5_context krbContext,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto,
+#else
+ krb5_keyblock *key,
+#endif
+ size_t dataLength,
+ size_t *padLength);
+
+krb5_error_code
+krbBlockSize(krb5_context krbContext,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto,
+#else
+ krb5_keyblock *key,
+#endif
+ size_t *blockSize);
+
+krb5_error_code
+krbEnctypeToString(krb5_context krbContext,
+ krb5_enctype enctype,
+ const char *prefix,
+ gss_buffer_t string);
+
+krb5_error_code
+krbMakeAuthDataKdcIssued(krb5_context context,
+ const krb5_keyblock *key,
+ krb5_const_principal issuer,
+#ifdef HAVE_HEIMDAL_VERSION
+ const AuthorizationData *authdata,
+ AuthorizationData *adKdcIssued
+#else
+ krb5_authdata *const *authdata,
+ krb5_authdata ***adKdcIssued
+#endif
+ );
+
+krb5_error_code
+krbMakeCred(krb5_context context,
+ krb5_auth_context authcontext,
+ krb5_creds *creds,
+ krb5_data *data);
+
+/* util_lucid.c */
+OM_uint32
+gssEapExportLucidSecContext(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ const gss_OID desiredObject,
+ gss_buffer_set_t *data_set);
+
+/* util_mech.c */
+extern gss_OID GSS_EAP_MECHANISM;
+
+int
+gssEapInternalizeOid(const gss_OID oid,
+ gss_OID *const pInternalizedOid);
+
+OM_uint32
++gssEapReleaseOid(OM_uint32 *minor, gss_OID *oid);
++
++OM_uint32
+gssEapDefaultMech(OM_uint32 *minor,
+ gss_OID *oid);
+
+OM_uint32
+gssEapIndicateMechs(OM_uint32 *minor,
+ gss_OID_set *mechs);
+
+OM_uint32
+gssEapEnctypeToOid(OM_uint32 *minor,
+ krb5_enctype enctype,
+ gss_OID *pOid);
+
+OM_uint32
+gssEapOidToEnctype(OM_uint32 *minor,
+ const gss_OID oid,
+ krb5_enctype *enctype);
+
+int
+gssEapIsMechanismOid(const gss_OID oid);
+
+int
+gssEapIsConcreteMechanismOid(const gss_OID oid);
+
+OM_uint32
+gssEapValidateMechs(OM_uint32 *minor,
+ const gss_OID_set mechs);
+
+gss_buffer_t
+gssEapOidToSaslName(const gss_OID oid);
+
+gss_OID
+gssEapSaslNameToOid(const gss_buffer_t name);
+
+/* util_name.c */
+#define EXPORT_NAME_FLAG_OID 0x1
+#define EXPORT_NAME_FLAG_COMPOSITE 0x2
+
+OM_uint32 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName);
+OM_uint32 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName);
+OM_uint32 gssEapExportName(OM_uint32 *minor,
+ const gss_name_t name,
+ gss_buffer_t exportedName);
+OM_uint32 gssEapExportNameInternal(OM_uint32 *minor,
+ const gss_name_t name,
+ gss_buffer_t exportedName,
+ unsigned int flags);
+OM_uint32 gssEapImportName(OM_uint32 *minor,
+ const gss_buffer_t input_name_buffer,
+ gss_OID input_name_type,
+ gss_name_t *output_name);
+OM_uint32 gssEapImportNameInternal(OM_uint32 *minor,
+ const gss_buffer_t input_name_buffer,
+ gss_name_t *output_name,
+ unsigned int flags);
+OM_uint32
+gssEapDuplicateName(OM_uint32 *minor,
+ const gss_name_t input_name,
+ gss_name_t *dest_name);
+
+/* util_oid.c */
+OM_uint32
+composeOid(OM_uint32 *minor_status,
+ const char *prefix,
+ size_t prefix_len,
+ int suffix,
+ gss_OID_desc *oid);
+
+OM_uint32
+decomposeOid(OM_uint32 *minor_status,
+ const char *prefix,
+ size_t prefix_len,
+ gss_OID_desc *oid,
+ int *suffix) ;
+
+OM_uint32
+duplicateOid(OM_uint32 *minor_status,
+ const gss_OID_desc * const oid,
+ gss_OID *new_oid);
+
+OM_uint32
+duplicateOidSet(OM_uint32 *minor,
+ const gss_OID_set src,
+ gss_OID_set *dst);
+
+static inline int
+oidEqual(const gss_OID_desc *o1, const gss_OID_desc *o2)
+{
+ if (o1 == GSS_C_NO_OID)
+ return (o2 == GSS_C_NO_OID);
+ else if (o2 == GSS_C_NO_OID)
+ return (o1 == GSS_C_NO_OID);
+ else
+ return (o1->length == o2->length &&
+ memcmp(o1->elements, o2->elements, o1->length) == 0);
+}
+
+/* util_ordering.c */
+OM_uint32
+sequenceInternalize(OM_uint32 *minor,
+ void **vqueue,
+ unsigned char **buf,
+ size_t *lenremain);
+
+OM_uint32
+sequenceExternalize(OM_uint32 *minor,
+ void *vqueue,
+ unsigned char **buf,
+ size_t *lenremain);
+
+size_t
+sequenceSize(void *vqueue);
+
+OM_uint32
+sequenceFree(OM_uint32 *minor, void **vqueue);
+
+OM_uint32
+sequenceCheck(OM_uint32 *minor, void **vqueue, uint64_t seqnum);
+
+OM_uint32
+sequenceInit(OM_uint32 *minor, void **vqueue, uint64_t seqnum,
+ int do_replay, int do_sequence, int wide_nums);
+
+/* util_token.c */
+size_t
+tokenSize(const gss_OID_desc *mech, size_t body_size);
+
+void
+makeTokenHeader(const gss_OID_desc *mech,
+ size_t body_size,
+ unsigned char **buf,
+ enum gss_eap_token_type tok_type);
+
+OM_uint32
+verifyTokenHeader(OM_uint32 *minor,
+ gss_OID mech,
+ size_t *body_size,
+ unsigned char **buf_in,
+ size_t toksize_in,
+ enum gss_eap_token_type *ret_tok_type);
+
+/* Helper macros */
+
+#define GSSEAP_CALLOC calloc
+#define GSSEAP_MALLOC malloc
+#define GSSEAP_FREE free
+#define GSSEAP_REALLOC realloc
+
+#define GSSEAP_NOT_IMPLEMENTED do { \
+ assert(0 && "not implemented"); \
+ *minor = ENOSYS; \
+ return GSS_S_FAILURE; \
+ } while (0)
+
+#include <pthread.h>
+
+#define GSSEAP_MUTEX pthread_mutex_t
+#define GSSEAP_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+
+#define GSSEAP_MUTEX_INIT(m) pthread_mutex_init((m), NULL)
+#define GSSEAP_MUTEX_DESTROY(m) pthread_mutex_destroy((m))
+#define GSSEAP_MUTEX_LOCK(m) pthread_mutex_lock((m))
+#define GSSEAP_MUTEX_UNLOCK(m) pthread_mutex_unlock((m))
+
+#define GSSEAP_THREAD_KEY pthread_key_t
+#define GSSEAP_KEY_CREATE(k, d) pthread_key_create((k), (d))
+#define GSSEAP_GETSPECIFIC(k) pthread_getspecific((k))
+#define GSSEAP_SETSPECIFIC(k, d) pthread_setspecific((k), (d))
+
+#define GSSEAP_THREAD_ONCE pthread_once_t
+#define GSSEAP_ONCE(o, i) pthread_once((o), (i))
+#define GSSEAP_ONCE_INITIALIZER PTHREAD_ONCE_INIT
+
+/* Helper functions */
+static inline void
+store_uint16_be(uint16_t val, void *vp)
+{
+ unsigned char *p = (unsigned char *)vp;
+
+ p[0] = (val >> 8) & 0xff;
+ p[1] = (val ) & 0xff;
+}
+
+static inline uint16_t
+load_uint16_be(const void *cvp)
+{
+ const unsigned char *p = (const unsigned char *)cvp;
+
+ return (p[1] | (p[0] << 8));
+}
+
+static inline void
+store_uint32_be(uint32_t val, void *vp)
+{
+ unsigned char *p = (unsigned char *)vp;
+
+ p[0] = (val >> 24) & 0xff;
+ p[1] = (val >> 16) & 0xff;
+ p[2] = (val >> 8) & 0xff;
+ p[3] = (val ) & 0xff;
+}
+
+static inline uint32_t
+load_uint32_be(const void *cvp)
+{
+ const unsigned char *p = (const unsigned char *)cvp;
+
+ return (p[3] | (p[2] << 8)
+ | ((uint32_t) p[1] << 16)
+ | ((uint32_t) p[0] << 24));
+}
+
+static inline void
+store_uint64_be(uint64_t val, void *vp)
+{
+ unsigned char *p = (unsigned char *)vp;
+
+ p[0] = (unsigned char)((val >> 56) & 0xff);
+ p[1] = (unsigned char)((val >> 48) & 0xff);
+ p[2] = (unsigned char)((val >> 40) & 0xff);
+ p[3] = (unsigned char)((val >> 32) & 0xff);
+ p[4] = (unsigned char)((val >> 24) & 0xff);
+ p[5] = (unsigned char)((val >> 16) & 0xff);
+ p[6] = (unsigned char)((val >> 8) & 0xff);
+ p[7] = (unsigned char)((val ) & 0xff);
+}
+
+static inline uint64_t
+load_uint64_be(const void *cvp)
+{
+ const unsigned char *p = (const unsigned char *)cvp;
+
+ return ((uint64_t)load_uint32_be(p) << 32) | load_uint32_be(p + 4);
+}
+
+static inline unsigned char *
+store_buffer(gss_buffer_t buffer, void *vp, int wide_nums)
+{
+ unsigned char *p = (unsigned char *)vp;
+
+ if (wide_nums) {
+ store_uint64_be(buffer->length, p);
+ p += 8;
+ } else {
+ store_uint32_be(buffer->length, p);
+ p += 4;
+ }
+
+ if (buffer->value != NULL) {
+ memcpy(p, buffer->value, buffer->length);
+ p += buffer->length;
+ }
+
+ return p;
+}
+
+static inline unsigned char *
+load_buffer(const void *cvp, size_t length, gss_buffer_t buffer)
+{
+ buffer->length = 0;
+ buffer->value = GSSEAP_MALLOC(length);
+ if (buffer->value == NULL)
+ return NULL;
+ buffer->length = length;
+ memcpy(buffer->value, cvp, length);
+ return (unsigned char *)cvp + length;
+}
+
+static inline unsigned char *
+store_oid(gss_OID oid, void *vp)
+{
+ gss_buffer_desc buf;
+
+ if (oid != GSS_C_NO_OID) {
+ buf.length = oid->length;
+ buf.value = oid->elements;
+ } else {
+ buf.length = 0;
+ buf.value = NULL;
+ }
+
+ return store_buffer(&buf, vp, FALSE);
+}
+
+static inline void
+krbDataToGssBuffer(krb5_data *data, gss_buffer_t buffer)
+{
+ buffer->value = (void *)data->data;
+ buffer->length = data->length;
+}
+
+static inline void
+krbPrincComponentToGssBuffer(krb5_principal krbPrinc,
+ int index, gss_buffer_t buffer)
+{
+#ifdef HAVE_HEIMDAL_VERSION
+ buffer->value = (void *)KRB_PRINC_NAME(krbPrinc)[index];
+ buffer->length = strlen((char *)buffer->value);
+#else
+ buffer->value = (void *)krb5_princ_component(NULL, krbPrinc, index)->data;
+ buffer->length = krb5_princ_component(NULL, krbPrinc, index)->length;
+#endif /* HAVE_HEIMDAL_VERSION */
+}
+
+static inline void
+krbPrincRealmToGssBuffer(krb5_principal krbPrinc, gss_buffer_t buffer)
+{
+#ifdef HAVE_HEIMDAL_VERSION
+ buffer->value = (void *)KRB_PRINC_REALM(krbPrinc);
+ buffer->length = strlen((char *)buffer->value);
+#else
+ krbDataToGssBuffer(KRB_PRINC_REALM(krbPrinc), buffer);
+#endif
+}
+
+static inline void
+gssBufferToKrbData(gss_buffer_t buffer, krb5_data *data)
+{
+ data->data = (char *)buffer->value;
+ data->length = buffer->length;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#include "util_attr.h"
+#ifdef GSSEAP_ENABLE_REAUTH
+#include "util_reauth.h"
+#endif
+
+#endif /* _UTIL_H_ */
--- /dev/null
- gss_release_oid(&tmpMinor, &ctx->mechanismUsed);
+/*
+ * Copyright (c) 2010, JANET(UK)
+ * 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.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * Utility routines for context handles.
+ */
+
+#include "gssapiP_eap.h"
+
+OM_uint32
+gssEapAllocContext(OM_uint32 *minor,
+ gss_ctx_id_t *pCtx)
+{
+ OM_uint32 tmpMinor;
+ gss_ctx_id_t ctx;
+
+ assert(*pCtx == GSS_C_NO_CONTEXT);
+
+ ctx = (gss_ctx_id_t)GSSEAP_CALLOC(1, sizeof(*ctx));
+ if (ctx == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+
+ if (GSSEAP_MUTEX_INIT(&ctx->mutex) != 0) {
+ *minor = errno;
+ gssEapReleaseContext(&tmpMinor, &ctx);
+ return GSS_S_FAILURE;
+ }
+
+ ctx->state = GSSEAP_STATE_IDENTITY;
+
+ /*
+ * Integrity, confidentiality, sequencing and replay detection are
+ * always available. Regardless of what flags are requested in
+ * GSS_Init_sec_context, implementations MUST set the flag corresponding
+ * to these services in the output of GSS_Init_sec_context and
+ * GSS_Accept_sec_context.
+ */
+ ctx->gssFlags = GSS_C_TRANS_FLAG | /* exporting contexts */
+ GSS_C_INTEG_FLAG | /* integrity */
+ GSS_C_CONF_FLAG | /* confidentiality */
+ GSS_C_SEQUENCE_FLAG | /* sequencing */
+ GSS_C_REPLAY_FLAG; /* replay detection */
+
+ *pCtx = ctx;
+
+ return GSS_S_COMPLETE;
+}
+
+static void
+releaseInitiatorContext(struct gss_eap_initiator_ctx *ctx)
+{
+ eap_peer_sm_deinit(ctx->eap);
+}
+
+static void
+releaseAcceptorContext(struct gss_eap_acceptor_ctx *ctx)
+{
+ OM_uint32 tmpMinor;
+
+ if (ctx->radConn != NULL)
+ rs_conn_destroy(ctx->radConn);
+ if (ctx->radContext != NULL)
+ rs_context_destroy(ctx->radContext);
+ if (ctx->radServer != NULL)
+ GSSEAP_FREE(ctx->radServer);
+ gss_release_buffer(&tmpMinor, &ctx->state);
+ if (ctx->vps != NULL)
+ gssEapRadiusFreeAvps(&tmpMinor, &ctx->vps);
+}
+
+OM_uint32
+gssEapReleaseContext(OM_uint32 *minor,
+ gss_ctx_id_t *pCtx)
+{
+ OM_uint32 tmpMinor;
+ gss_ctx_id_t ctx = *pCtx;
+ krb5_context krbContext = NULL;
+
+ if (ctx == GSS_C_NO_CONTEXT) {
+ return GSS_S_COMPLETE;
+ }
+
+ gssEapKerberosInit(&tmpMinor, &krbContext);
+
+#ifdef GSSEAP_ENABLE_REAUTH
+ if (ctx->flags & CTX_FLAG_KRB_REAUTH) {
+ gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
+ } else
+#endif
+ if (CTX_IS_INITIATOR(ctx)) {
+ releaseInitiatorContext(&ctx->initiatorCtx);
+ } else {
+ releaseAcceptorContext(&ctx->acceptorCtx);
+ }
+
+ krb5_free_keyblock_contents(krbContext, &ctx->rfc3961Key);
+ gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
+ gssEapReleaseName(&tmpMinor, &ctx->acceptorName);
++ gssEapReleaseOid(&tmpMinor, &ctx->mechanismUsed);
+ sequenceFree(&tmpMinor, &ctx->seqState);
+ gssEapReleaseCred(&tmpMinor, &ctx->defaultCred);
+
+ GSSEAP_MUTEX_DESTROY(&ctx->mutex);
+
+ memset(ctx, 0, sizeof(*ctx));
+ GSSEAP_FREE(ctx);
+ *pCtx = GSS_C_NO_CONTEXT;
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapMakeToken(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ const gss_buffer_t innerToken,
+ enum gss_eap_token_type tokenType,
+ gss_buffer_t outputToken)
+{
+ unsigned char *p;
+
+ outputToken->length = tokenSize(ctx->mechanismUsed, innerToken->length);
+ outputToken->value = GSSEAP_MALLOC(outputToken->length);
+ if (outputToken->value == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+
+ p = (unsigned char *)outputToken->value;
+ makeTokenHeader(ctx->mechanismUsed, innerToken->length, &p, tokenType);
+ memcpy(p, innerToken->value, innerToken->length);
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapVerifyToken(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ const gss_buffer_t inputToken,
+ enum gss_eap_token_type *actualToken,
+ gss_buffer_t innerInputToken)
+{
+ OM_uint32 major;
+ size_t bodySize;
+ unsigned char *p = (unsigned char *)inputToken->value;
+ gss_OID_desc oidBuf;
+ gss_OID oid;
+
+ if (ctx->mechanismUsed != GSS_C_NO_OID) {
+ oid = ctx->mechanismUsed;
+ } else {
+ oidBuf.elements = NULL;
+ oidBuf.length = 0;
+ oid = &oidBuf;
+ }
+
+ major = verifyTokenHeader(minor, oid, &bodySize, &p,
+ inputToken->length, actualToken);
+ if (GSS_ERROR(major))
+ return major;
+
+ if (ctx->mechanismUsed == GSS_C_NO_OID) {
+ if (!gssEapIsConcreteMechanismOid(oid)) {
+ *minor = GSSEAP_WRONG_MECH;
+ return GSS_S_BAD_MECH;
+ }
+
+ if (!gssEapInternalizeOid(oid, &ctx->mechanismUsed)) {
+ major = duplicateOid(minor, oid, &ctx->mechanismUsed);
+ if (GSS_ERROR(major))
+ return major;
+ }
+ }
+
+ innerInputToken->length = bodySize;
+ innerInputToken->value = p;
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapContextTime(OM_uint32 *minor,
+ gss_ctx_id_t context_handle,
+ OM_uint32 *time_rec)
+{
+ if (context_handle->expiryTime == 0) {
+ *time_rec = GSS_C_INDEFINITE;
+ } else {
+ time_t now, lifetime;
+
+ time(&now);
+ lifetime = context_handle->expiryTime - now;
+ if (lifetime <= 0) {
+ *time_rec = 0;
+ return GSS_S_CONTEXT_EXPIRED;
+ }
+ *time_rec = lifetime;
+ }
+
+ return GSS_S_COMPLETE;
+}
--- /dev/null
- unsigned char *buf = NULL;
- size_t buf_size, len;
+/*
+ * Copyright (c) 2010, JANET(UK)
+ * 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.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * Kerberos 5 helpers.
+ */
+
+#include "gssapiP_eap.h"
+
+static GSSEAP_THREAD_ONCE krbContextKeyOnce = GSSEAP_ONCE_INITIALIZER;
+static GSSEAP_THREAD_KEY krbContextKey;
+
+static void
+destroyKrbContext(void *arg)
+{
+ krb5_context context = (krb5_context)arg;
+
+ if (context != NULL)
+ krb5_free_context(context);
+}
+
+static void
+createKrbContextKey(void)
+{
+ GSSEAP_KEY_CREATE(&krbContextKey, destroyKrbContext);
+}
+
+OM_uint32
+gssEapKerberosInit(OM_uint32 *minor, krb5_context *context)
+{
+ *minor = 0;
+
+ GSSEAP_ONCE(&krbContextKeyOnce, createKrbContextKey);
+
+ *context = GSSEAP_GETSPECIFIC(krbContextKey);
+ if (*context == NULL) {
+ *minor = krb5_init_context(context);
+ if (*minor == 0) {
+ if (GSSEAP_SETSPECIFIC(krbContextKey, *context) != 0) {
+ *minor = errno;
+ krb5_free_context(*context);
+ *context = NULL;
+ }
+ }
+ }
+
+ return *minor == 0 ? GSS_S_COMPLETE : GSS_S_FAILURE;
+}
+
+/*
+ * Derive a key K for RFC 4121 use by using the following
+ * derivation function (based on RFC 4402);
+ *
+ * KMSK = random-to-key(MSK)
+ * Tn = pseudo-random(KMSK, n || "rfc4121-gss-eap")
+ * L = output key size
+ * K = truncate(L, T1 || T2 || .. || Tn)
+ */
+OM_uint32
+gssEapDeriveRfc3961Key(OM_uint32 *minor,
+ const unsigned char *inputKey,
+ size_t inputKeyLength,
+ krb5_enctype encryptionType,
+ krb5_keyblock *pKey)
+{
+ krb5_context krbContext;
+#ifndef HAVE_HEIMDAL_VERSION
+ krb5_data data;
+#endif
+ krb5_data ns, t, prfOut;
+ krb5_keyblock kd;
+ krb5_error_code code;
+ size_t randomLength, keyLength, prfLength;
+ unsigned char constant[4 + sizeof("rfc4121-gss-eap") - 1], *p;
+ ssize_t i, remain;
+
+ assert(encryptionType != ENCTYPE_NULL);
+
+ memset(pKey, 0, sizeof(*pKey));
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ KRB_KEY_INIT(&kd);
+ KRB_KEY_TYPE(&kd) = encryptionType;
+
+ t.data = NULL;
+ t.length = 0;
+
+ prfOut.data = NULL;
+ prfOut.length = 0;
+
+ code = krb5_c_keylengths(krbContext, encryptionType,
+ &randomLength, &keyLength);
+ if (code != 0)
+ goto cleanup;
+
+ KRB_KEY_DATA(&kd) = GSSEAP_MALLOC(keyLength);
+ if (KRB_KEY_DATA(&kd) == NULL) {
+ code = ENOMEM;
+ goto cleanup;
+ }
+ KRB_KEY_LENGTH(&kd) = keyLength;
+
+ /* Convert MSK into a Kerberos key */
+#ifdef HAVE_HEIMDAL_VERSION
+ code = krb5_random_to_key(krbContext, encryptionType, inputKey,
+ MIN(inputKeyLength, randomLength), &kd);
+#else
+ data.length = MIN(inputKeyLength, randomLength);
+ data.data = (char *)inputKey;
+
+ code = krb5_c_random_to_key(krbContext, encryptionType, &data, &kd);
+#endif
+ if (code != 0)
+ goto cleanup;
+
+ memset(&constant[0], 0, 4);
+ memcpy(&constant[4], "rfc4121-gss-eap", sizeof("rfc4121-gss-eap") - 1);
+
+ ns.length = sizeof(constant);
+ ns.data = (char *)constant;
+
+ /* Plug derivation constant and key into PRF */
+ code = krb5_c_prf_length(krbContext, encryptionType, &prfLength);
+ if (code != 0)
+ goto cleanup;
+
+ t.length = prfLength;
+ t.data = GSSEAP_MALLOC(t.length);
+ if (t.data == NULL) {
+ code = ENOMEM;
+ goto cleanup;
+ }
+
+ prfOut.length = randomLength;
+ prfOut.data = GSSEAP_MALLOC(prfOut.length);
+ if (prfOut.data == NULL) {
+ code = ENOMEM;
+ goto cleanup;
+ }
+
+ for (i = 0, p = (unsigned char *)prfOut.data, remain = randomLength;
+ remain > 0;
+ p += t.length, remain -= t.length, i++)
+ {
+ store_uint32_be(i, ns.data);
+
+ code = krb5_c_prf(krbContext, &kd, &ns, &t);
+ if (code != 0)
+ goto cleanup;
+
+ memcpy(p, t.data, MIN(t.length, remain));
+ }
+
+ /* Finally, convert PRF output into a new key which we will return */
+#ifdef HAVE_HEIMDAL_VERSION
+ code = krb5_random_to_key(krbContext, encryptionType,
+ prfOut.data, prfOut.length, &kd);
+#else
+ code = krb5_c_random_to_key(krbContext, encryptionType, &prfOut, &kd);
+#endif
+ if (code != 0)
+ goto cleanup;
+
+ *pKey = kd;
+ KRB_KEY_DATA(&kd) = NULL;
+
+cleanup:
+ if (KRB_KEY_DATA(&kd) != NULL) {
+ memset(KRB_KEY_DATA(&kd), 0, KRB_KEY_LENGTH(&kd));
+ GSSEAP_FREE(KRB_KEY_DATA(&kd));
+ }
+ if (t.data != NULL) {
+ memset(t.data, 0, t.length);
+ GSSEAP_FREE(t.data);
+ }
+ if (prfOut.data != NULL) {
+ memset(prfOut.data, 0, prfOut.length);
+ GSSEAP_FREE(prfOut.data);
+ }
+ *minor = code;
+ return (code == 0) ? GSS_S_COMPLETE : GSS_S_FAILURE;
+}
+
+#ifdef HAVE_KRB5INT_C_MANDATORY_CKSUMTYPE
+extern krb5_error_code
+krb5int_c_mandatory_cksumtype(krb5_context, krb5_enctype, krb5_cksumtype *);
+#endif
+
+OM_uint32
+rfc3961ChecksumTypeForKey(OM_uint32 *minor,
+ krb5_keyblock *key,
+ krb5_cksumtype *cksumtype)
+{
+ krb5_context krbContext;
+#ifndef HAVE_KRB5INT_C_MANDATORY_CKSUMTYPE
+ krb5_data data;
+ krb5_checksum cksum;
+#endif
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+#ifdef HAVE_KRB5INT_C_MANDATORY_CKSUMTYPE
+ *minor = krb5int_c_mandatory_cksumtype(krbContext, KRB_KEY_TYPE(key),
+ cksumtype);
+ if (*minor != 0)
+ return GSS_S_FAILURE;
+#else
+ data.length = 0;
+ data.data = NULL;
+
+ memset(&cksum, 0, sizeof(cksum));
+
+ /*
+ * This is a complete hack but it's the only way to work with
+ * MIT Kerberos pre-1.9 without using private API, as it does
+ * not support passing in zero as the checksum type.
+ */
+ *minor = krb5_c_make_checksum(krbContext, 0, key, 0, &data, &cksum);
+ if (*minor != 0)
+ return GSS_S_FAILURE;
+
+#ifdef HAVE_HEIMDAL_VERSION
+ *cksumtype = cksum.cksumtype;
+#else
+ *cksumtype = cksum.checksum_type;
+#endif
+
+ krb5_free_checksum_contents(krbContext, &cksum);
+#endif /* HAVE_KRB5INT_C_MANDATORY_CKSUMTYPE */
+
+ if (!krb5_c_is_keyed_cksum(*cksumtype)) {
+ *minor = KRB5KRB_AP_ERR_INAPP_CKSUM;
+ return GSS_S_FAILURE;
+ }
+
+ return GSS_S_COMPLETE;
+}
+
+#ifdef HAVE_HEIMDAL_VERSION
+static heim_general_string krbAnonymousPrincipalComponents[] =
+ { KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME };
+
+static const Principal krbAnonymousPrincipalData = {
+ { KRB5_NT_WELLKNOWN, { 2, krbAnonymousPrincipalComponents } },
+ "WELLKNOWN:ANONYMOUS"
+};
+#endif
+
+krb5_const_principal
+krbAnonymousPrincipal(void)
+{
+#ifdef HAVE_HEIMDAL_VERSION
+ return &krbAnonymousPrincipalData;
+#else
+ return krb5_anonymous_principal();
+#endif
+}
+
+krb5_error_code
+krbCryptoLength(krb5_context krbContext,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto,
+#else
+ krb5_keyblock *key,
+#endif
+ int type,
+ size_t *length)
+{
+#ifdef HAVE_HEIMDAL_VERSION
+ return krb5_crypto_length(krbContext, krbCrypto, type, length);
+#else
+ unsigned int len;
+ krb5_error_code code;
+
+ code = krb5_c_crypto_length(krbContext, KRB_KEY_TYPE(key), type, &len);
+ if (code == 0)
+ *length = (size_t)len;
+
+ return code;
+#endif
+}
+
+krb5_error_code
+krbPaddingLength(krb5_context krbContext,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto,
+#else
+ krb5_keyblock *key,
+#endif
+ size_t dataLength,
+ size_t *padLength)
+{
+ krb5_error_code code;
+#ifdef HAVE_HEIMDAL_VERSION
+ size_t headerLength, paddingLength;
+
+ code = krbCryptoLength(krbContext, krbCrypto,
+ KRB5_CRYPTO_TYPE_HEADER, &headerLength);
+ if (code != 0)
+ return code;
+
+ dataLength += headerLength;
+
+ code = krb5_crypto_length(krbContext, krbCrypto,
+ KRB5_CRYPTO_TYPE_PADDING, &paddingLength);
+ if (code != 0)
+ return code;
+
+ if (paddingLength != 0 && (dataLength % paddingLength) != 0)
+ *padLength = paddingLength - (dataLength % paddingLength);
+ else
+ *padLength = 0;
+
+ return 0;
+#else
+ unsigned int pad;
+
+ code = krb5_c_padding_length(krbContext, KRB_KEY_TYPE(key), dataLength, &pad);
+ if (code == 0)
+ *padLength = (size_t)pad;
+
+ return code;
+#endif /* HAVE_HEIMDAL_VERSION */
+}
+
+krb5_error_code
+krbBlockSize(krb5_context krbContext,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto,
+#else
+ krb5_keyblock *key,
+#endif
+ size_t *blockSize)
+{
+#ifdef HAVE_HEIMDAL_VERSION
+ return krb5_crypto_getblocksize(krbContext, krbCrypto, blockSize);
+#else
+ return krb5_c_block_size(krbContext, KRB_KEY_TYPE(key), blockSize);
+#endif
+}
+
+krb5_error_code
+krbEnctypeToString(krb5_context krbContext,
+ krb5_enctype enctype,
+ const char *prefix,
+ gss_buffer_t string)
+{
+ krb5_error_code code;
+#ifdef HAVE_HEIMDAL_VERSION
+ char *enctypeBuf = NULL;
+#else
+ char enctypeBuf[128];
+#endif
+ size_t prefixLength, enctypeLength;
+
+#ifdef HAVE_HEIMDAL_VERSION
+ code = krb5_enctype_to_string(krbContext, enctype, &enctypeBuf);
+#else
+ code = krb5_enctype_to_name(enctype, 0, enctypeBuf, sizeof(enctypeBuf));
+#endif
+ if (code != 0)
+ return code;
+
+ prefixLength = (prefix != NULL) ? strlen(prefix) : 0;
+ enctypeLength = strlen(enctypeBuf);
+
+ string->value = GSSEAP_MALLOC(prefixLength + enctypeLength + 1);
+ if (string->value == NULL) {
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_xfree(enctypeBuf);
+#endif
+ return ENOMEM;
+ }
+
+ if (prefixLength != 0)
+ memcpy(string->value, prefix, prefixLength);
+ memcpy((char *)string->value + prefixLength, enctypeBuf, enctypeLength);
+
+ string->length = prefixLength + enctypeLength;
+ ((char *)string->value)[string->length] = '\0';
+
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_xfree(enctypeBuf);
+#endif
+
+ return 0;
+}
+
+krb5_error_code
+krbMakeAuthDataKdcIssued(krb5_context context,
+ const krb5_keyblock *key,
+ krb5_const_principal issuer,
+#ifdef HAVE_HEIMDAL_VERSION
+ const AuthorizationData *authdata,
+ AuthorizationData *adKdcIssued
+#else
+ krb5_authdata *const *authdata,
+ krb5_authdata ***adKdcIssued
+#endif
+ )
+{
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_error_code code;
+ AD_KDCIssued kdcIssued;
+ AuthorizationDataElement adDatum;
+ unsigned char *buf;
+ size_t buf_size, len;
+ krb5_crypto crypto = NULL;
+
+ memset(&kdcIssued, 0, sizeof(kdcIssued));
+ memset(adKdcIssued, 0, sizeof(*adKdcIssued));
+
+ kdcIssued.i_realm = issuer->realm != NULL ? (Realm *)&issuer->realm : NULL;
+ kdcIssued.i_sname = (PrincipalName *)&issuer->name;
+ kdcIssued.elements = *authdata;
+
+ ASN1_MALLOC_ENCODE(AuthorizationData, buf, buf_size, authdata, &len, code);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_crypto_init(context, key, 0, &crypto);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_create_checksum(context, crypto, KRB5_KU_AD_KDC_ISSUED,
+ 0, buf, buf_size, &kdcIssued.ad_checksum);
+ if (code != 0)
+ goto cleanup;
+
+ GSSEAP_FREE(buf);
+ buf = NULL;
+
+ ASN1_MALLOC_ENCODE(AD_KDCIssued, buf, buf_size, &kdcIssued, &len, code);
+ if (code != 0)
+ goto cleanup;
+
+ adDatum.ad_type = KRB5_AUTHDATA_KDC_ISSUED;
+ adDatum.ad_data.length = buf_size;
+ adDatum.ad_data.data = buf;
+
+ code = add_AuthorizationData(adKdcIssued, &adDatum);
+ if (code != 0)
+ goto cleanup;
+
+cleanup:
+ if (buf != NULL)
+ GSSEAP_FREE(buf);
+ if (crypto != NULL)
+ krb5_crypto_destroy(context, crypto);
+ free_Checksum(&kdcIssued.ad_checksum);
+
+ return code;
+#else
+ return krb5_make_authdata_kdc_issued(context, key, issuer, authdata,
+ adKdcIssued);
+#endif /* HAVE_HEIMDAL_VERSION */
+}
+
+krb5_error_code
+krbMakeCred(krb5_context krbContext,
+ krb5_auth_context authContext,
+ krb5_creds *creds,
+ krb5_data *data)
+{
+ krb5_error_code code;
+#ifdef HAVE_HEIMDAL_VERSION
+ KRB_CRED krbCred;
+ KrbCredInfo krbCredInfo;
+ krb5_keyblock *key;
+ krb5_crypto krbCrypto = NULL;
- ASN1_MALLOC_ENCODE(KrbCredInfo, buf, buf_size, &krbCredInfo, &len, code);
++ krb5_data credInfoData = { 0 };
++ size_t len;
+#else
+ krb5_data *d = NULL;
+#endif
+
+ memset(data, 0, sizeof(*data));
+#ifdef HAVE_HEIMDAL_VERSION
+ memset(&krbCred, 0, sizeof(krbCred));
+ memset(&krbCredInfo, 0, sizeof(krbCredInfo));
+
+ key = (authContext->local_subkey != NULL)
+ ? authContext->local_subkey
+ : authContext->keyblock;
+
+ krbCred.pvno = 5;
+ krbCred.msg_type = krb_cred;
+ krbCred.tickets.val = (Ticket *)GSSEAP_CALLOC(1, sizeof(Ticket));
+ if (krbCred.tickets.val == NULL) {
+ code = ENOMEM;
+ goto cleanup;
+ }
+ krbCred.tickets.len = 1;
+
+ code = decode_Ticket(creds->ticket.data,
+ creds->ticket.length,
+ krbCred.tickets.val, &len);
+ if (code != 0)
+ goto cleanup;
+
+ krbCredInfo.key = creds->session;
+ krbCredInfo.prealm = &creds->client->realm;
+ krbCredInfo.pname = &creds->client->name;
+ krbCredInfo.flags = &creds->flags.b;
+ krbCredInfo.authtime = &creds->times.authtime;
+ krbCredInfo.starttime = &creds->times.starttime;
+ krbCredInfo.endtime = &creds->times.endtime;
+ krbCredInfo.renew_till = &creds->times.renew_till;
+ krbCredInfo.srealm = &creds->server->realm;
+ krbCredInfo.sname = &creds->server->name;
+ krbCredInfo.caddr = creds->addresses.len ? &creds->addresses : NULL;
+
- buf,
- len,
++ ASN1_MALLOC_ENCODE(KrbCredInfo, credInfoData.data, credInfoData.length,
++ &krbCredInfo, &len, code);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_crypto_init(krbContext, key, 0, &krbCrypto);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_encrypt_EncryptedData(krbContext,
+ krbCrypto,
+ KRB5_KU_KRB_CRED,
- GSSEAP_FREE(buf);
- buf = NULL;
-
- ASN1_MALLOC_ENCODE(KRB_CRED, buf, buf_size, &krbCred, &len, code);
++ credInfoData.data,
++ credInfoData.length,
+ 0,
+ &krbCred.enc_part);
+ if (code != 0)
+ goto cleanup;
+
- if (buf != NULL)
- GSSEAP_FREE(buf);
++ ASN1_MALLOC_ENCODE(KRB_CRED, data->data, data->length,
++ &krbCred, &len, code);
+ if (code != 0)
+ goto cleanup;
+
+cleanup:
+ if (krbCrypto != NULL)
+ krb5_crypto_destroy(krbContext, krbCrypto);
+ free_KRB_CRED(&krbCred);
++ krb5_data_free(&credInfoData);
+
+ return code;
+#else
+ code = krb5_mk_1cred(krbContext, authContext, creds, &d, NULL);
+ if (code == 0) {
+ *data = *d;
+ GSSEAP_FREE(d);
+ }
+
+ return code;
+#endif /* HAVE_HEIMDAL_VERSION */
+}
--- /dev/null
+/*
+ * Copyright (c) 2010, JANET(UK)
+ * 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.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * General mechanism utility routines.
+ */
+
+#include "gssapiP_eap.h"
+
+/*
+ * 1.3.6.1.4.1.5322(padl)
+ * gssEap(22)
+ * mechanisms(1)
+ * eap-aes128-cts-hmac-sha1-96(17)
+ * eap-aes256-cts-hmac-sha1-96(18)
+ * nameTypes(2)
+ * apiExtensions(3)
+ * inquireSecContextByOid(1)
+ * inquireCredByOid(2)
+ * setSecContextOption(3)
+ * setCredOption(4)
+ * mechInvoke(5)
+ */
+
+/*
+ * Note: the enctype-less OID is used as the mechanism OID in exported
+ * names. There is no public symbol for it. This is consistent with
+ * the krb5 mechanism which, whilst known by many OIDs, always uses a
+ * canonical OID for exported names. (This OID is also returned by
+ * gss_inquire_name.)
+ */
+static gss_OID_desc gssEapMechOids[] = {
+ /* 1.3.6.1.4.1.5322.22.1 */
+ { 9, "\x2B\x06\x01\x04\x01\xA9\x4A\x16\x01" },
+ /* 1.3.6.1.4.1.5322.22.1.17 */
+ { 10, "\x2B\x06\x01\x04\x01\xA9\x4A\x16\x01\x11" },
+ /* 1.3.6.1.4.1.5322.22.1.18 */
+ { 10, "\x2B\x06\x01\x04\x01\xA9\x4A\x16\x01\x12" }
+};
+
+gss_OID GSS_EAP_MECHANISM = &gssEapMechOids[0];
+gss_OID GSS_EAP_AES128_CTS_HMAC_SHA1_96_MECHANISM = &gssEapMechOids[1];
+gss_OID GSS_EAP_AES256_CTS_HMAC_SHA1_96_MECHANISM = &gssEapMechOids[2];
+
+/*
+ * Returns TRUE is the OID is a concrete mechanism OID, that is, one
+ * with a Kerberos enctype as the last element.
+ */
+int
+gssEapIsConcreteMechanismOid(const gss_OID oid)
+{
+ return oid->length > GSS_EAP_MECHANISM->length &&
+ memcmp(oid->elements, GSS_EAP_MECHANISM->elements,
+ GSS_EAP_MECHANISM->length) == 0;
+}
+
+int
+gssEapIsMechanismOid(const gss_OID oid)
+{
+ return oid == GSS_C_NO_OID ||
+ oidEqual(oid, GSS_EAP_MECHANISM) ||
+ gssEapIsConcreteMechanismOid(oid);
+}
+
+/*
+ * Validate that all elements are concrete mechanism OIDs.
+ */
+OM_uint32
+gssEapValidateMechs(OM_uint32 *minor,
+ const gss_OID_set mechs)
+{
+ int i;
+
+ *minor = 0;
+
+ if (mechs == GSS_C_NO_OID_SET) {
+ return GSS_S_COMPLETE;
+ }
+
+ for (i = 0; i < mechs->count; i++) {
+ gss_OID oid = &mechs->elements[i];
+
+ if (!gssEapIsConcreteMechanismOid(oid)) {
+ *minor = GSSEAP_WRONG_MECH;
+ return GSS_S_BAD_MECH;
+ }
+ }
+
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapOidToEnctype(OM_uint32 *minor,
+ const gss_OID oid,
+ krb5_enctype *enctype)
+{
+ OM_uint32 major;
+ int suffix;
+
+ major = decomposeOid(minor,
+ GSS_EAP_MECHANISM->elements,
+ GSS_EAP_MECHANISM->length,
+ oid,
+ &suffix);
+ if (major == GSS_S_COMPLETE)
+ *enctype = suffix;
+
+ return major;
+}
+
+OM_uint32
+gssEapEnctypeToOid(OM_uint32 *minor,
+ krb5_enctype enctype,
+ gss_OID *pOid)
+{
+ OM_uint32 major;
+ gss_OID oid;
+
+ *pOid = NULL;
+
+ oid = (gss_OID)GSSEAP_MALLOC(sizeof(*oid));
+ if (oid == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+
+ oid->length = GSS_EAP_MECHANISM->length + 1;
+ oid->elements = GSSEAP_MALLOC(oid->length);
+ if (oid->elements == NULL) {
+ *minor = ENOMEM;
+ GSSEAP_FREE(oid);
+ return GSS_S_FAILURE;
+ }
+
+ major = composeOid(minor,
+ GSS_EAP_MECHANISM->elements,
+ GSS_EAP_MECHANISM->length,
+ enctype,
+ oid);
+ if (major == GSS_S_COMPLETE) {
+ gssEapInternalizeOid(oid, pOid);
+ *pOid = oid;
+ } else {
+ GSSEAP_FREE(oid->elements);
+ GSSEAP_FREE(oid);
+ }
+
+ return major;
+}
+
+OM_uint32
+gssEapIndicateMechs(OM_uint32 *minor,
+ gss_OID_set *mechs)
+{
+ krb5_context krbContext;
+ OM_uint32 major, tmpMinor;
+ krb5_enctype *etypes;
+ int i;
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ *minor = krb5_get_permitted_enctypes(krbContext, &etypes);
+ if (*minor != 0) {
+ return GSS_S_FAILURE;
+ }
+
+ major = gss_create_empty_oid_set(minor, mechs);
+ if (GSS_ERROR(major)) {
+ GSSEAP_FREE(etypes);
+ return major;
+ }
+
+ for (i = 0; etypes[i] != ENCTYPE_NULL; i++) {
+ gss_OID mechOid;
+
+ /* XXX currently we aren't equipped to encode these enctypes */
+ if (etypes[i] < 0 || etypes[i] > 127)
+ continue;
+
+ major = gssEapEnctypeToOid(minor, etypes[i], &mechOid);
+ if (GSS_ERROR(major))
+ break;
+
+ major = gss_add_oid_set_member(minor, mechOid, mechs);
+ if (GSS_ERROR(major))
+ break;
+
+ gss_release_oid(&tmpMinor, &mechOid);
+ }
+
+ GSSEAP_FREE(etypes);
+
+ *minor = 0;
+ return major;
+}
+
+OM_uint32
+gssEapDefaultMech(OM_uint32 *minor,
+ gss_OID *oid)
+{
+ gss_OID_set mechs;
+ OM_uint32 major, tmpMinor;
+
+ major = gssEapIndicateMechs(minor, &mechs);
+ if (GSS_ERROR(major)) {
+ return major;
+ }
+
+ if (mechs->count == 0) {
+ gss_release_oid_set(&tmpMinor, &mechs);
+ return GSS_S_BAD_MECH;
+ }
+
+ if (!gssEapInternalizeOid(&mechs->elements[0], oid)) {
+ /* don't double-free if we didn't internalize it */
+ mechs->elements[0].length = 0;
+ mechs->elements[0].elements = NULL;
+ }
+
+ gss_release_oid_set(&tmpMinor, &mechs);
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+int
+gssEapInternalizeOid(const gss_OID oid,
+ gss_OID *const pInternalizedOid)
+{
+ int i;
+
+ *pInternalizedOid = GSS_C_NO_OID;
+
+ for (i = 0;
+ i < sizeof(gssEapMechOids) / sizeof(gssEapMechOids[0]);
+ i++) {
+ if (oidEqual(oid, &gssEapMechOids[i])) {
+ *pInternalizedOid = (const gss_OID)&gssEapMechOids[i];
+ break;
+ }
+ }
+
+ if (*pInternalizedOid == GSS_C_NO_OID) {
+ if (oidEqual(oid, GSS_EAP_NT_PRINCIPAL_NAME))
+ *pInternalizedOid = (const gss_OID)GSS_EAP_NT_PRINCIPAL_NAME;
+ }
+
+ if (*pInternalizedOid == GSS_C_NO_OID) {
+ *pInternalizedOid = oid;
+ return 0;
+ }
+
+ return 1;
+}
+
++OM_uint32
++gssEapReleaseOid(OM_uint32 *minor, gss_OID *oid)
++{
++ gss_OID internalizedOid = GSS_C_NO_OID;
++
++ *minor = 0;
++
++ if (gssEapInternalizeOid(*oid, &internalizedOid)) {
++ /* OID was internalized, so we can mark it as "freed" */
++ *oid = GSS_C_NO_OID;
++ return GSS_S_COMPLETE;
++ }
++
++ /* we don't know about this OID */
++ return GSS_S_CONTINUE_NEEDED;
++}
++
+static gss_buffer_desc gssEapSaslMechs[] = {
+ { sizeof("EAP") - 1, "EAP", }, /* not used */
+ { sizeof("EAP-AES128") - 1, "EAP-AES128" },
+ { sizeof("EAP-AES256") - 1, "EAP-AES256" },
+};
+
+gss_buffer_t
+gssEapOidToSaslName(const gss_OID oid)
+{
+ size_t i;
+
+ for (i = 1; i < sizeof(gssEapMechOids)/sizeof(gssEapMechOids[0]); i++) {
+ if (oidEqual(&gssEapMechOids[i], oid))
+ return &gssEapSaslMechs[i];
+ }
+
+ return GSS_C_NO_BUFFER;
+}
+
+gss_OID
+gssEapSaslNameToOid(const gss_buffer_t name)
+{
+ size_t i;
+
+ for (i = 1; i < sizeof(gssEapSaslMechs)/sizeof(gssEapSaslMechs[0]); i++) {
+ if (bufferEqual(&gssEapSaslMechs[i], name))
+ return &gssEapMechOids[i];
+ }
+
+ return GSS_C_NO_OID;
+}
--- /dev/null
- unsigned char *buf = NULL;
- size_t buf_size, len;
+/*
+ * Copyright (c) 2010, JANET(UK)
+ * 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.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * Fast reauthentication support.
+ */
+
+#include "gssapiP_eap.h"
+
+#include <dlfcn.h>
+
+/*
+ * Fast reauthentication support for EAP GSS.
+ */
+
+krb5_error_code
+krb5_encrypt_tkt_part(krb5_context, const krb5_keyblock *, krb5_ticket *);
+
+krb5_error_code
+encode_krb5_ticket(const krb5_ticket *rep, krb5_data **code);
+
+static OM_uint32
+gssDisplayName(OM_uint32 *minor,
+ gss_name_t name,
+ gss_buffer_t buffer,
+ gss_OID *name_type);
+
+static OM_uint32
+gssImportName(OM_uint32 *minor,
+ gss_buffer_t buffer,
+ gss_OID name_type,
+ gss_name_t *name);
+
+static krb5_error_code
+getAcceptorKey(krb5_context krbContext,
+ gss_ctx_id_t ctx,
+ gss_cred_id_t cred,
+ krb5_principal *princ,
+ krb5_keyblock *key)
+{
+ krb5_error_code code;
+ krb5_keytab keytab = NULL;
+ krb5_keytab_entry ktent = { 0 };
+ krb5_kt_cursor cursor;
+
+ *princ = NULL;
+ memset(key, 0, sizeof(*key));
+ memset(&cursor, 0, sizeof(cursor));
+
+ code = krb5_kt_default(krbContext, &keytab);
+ if (code != 0)
+ goto cleanup;
+
+ if (cred != GSS_C_NO_CREDENTIAL && cred->name != GSS_C_NO_NAME) {
+ code = krb5_kt_get_entry(krbContext, keytab,
+ cred->name->krbPrincipal, 0,
+ ctx->encryptionType, &ktent);
+ if (code != 0)
+ goto cleanup;
+ } else {
+ /*
+ * It's not clear that looking encrypting the ticket in the
+ * requested EAP enctype provides any value.
+ */
+ code = krb5_kt_start_seq_get(krbContext, keytab, &cursor);
+ if (code != 0)
+ goto cleanup;
+
+ while ((code = krb5_kt_next_entry(krbContext, keytab,
+ &ktent, &cursor)) == 0) {
+ if (KRB_KEY_TYPE(KRB_KT_ENT_KEYBLOCK(&ktent)) == ctx->encryptionType)
+ break;
+ else
+ KRB_KT_ENT_FREE(krbContext, &ktent);
+ }
+ }
+
+ if (code == 0) {
+ *princ = ktent.principal;
+ *key = *KRB_KT_ENT_KEYBLOCK(&ktent);
+ }
+
+cleanup:
+ if (cred == GSS_C_NO_CREDENTIAL || cred->name == GSS_C_NO_NAME)
+ krb5_kt_end_seq_get(krbContext, keytab, &cursor);
+ krb5_kt_close(krbContext, keytab);
+ if (code != 0)
+ KRB_KT_ENT_FREE(krbContext, &ktent);
+
+ return code;
+}
+
+static OM_uint32
+freezeAttrContext(OM_uint32 *minor,
+ gss_name_t initiatorName,
+ krb5_const_principal acceptorPrinc,
+ krb5_keyblock *session,
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_authdata *kdcIssuedAuthData
+#else
+ krb5_authdata ***kdcIssuedAuthData
+#endif
+ )
+{
+ OM_uint32 major, tmpMinor;
+ krb5_error_code code;
+ krb5_context krbContext;
+ gss_buffer_desc attrBuf = GSS_C_EMPTY_BUFFER;
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_authdata authDataBuf, *authData = &authDataBuf;
+ AuthorizationDataElement authDatum = { 0 };
+#else
+ krb5_authdata *authData[2], authDatum = { 0 };
+#endif
+
+ memset(kdcIssuedAuthData, 0, sizeof(*kdcIssuedAuthData));
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ major = gssEapExportAttrContext(minor, initiatorName, &attrBuf);
+ if (GSS_ERROR(major))
+ return major;
+
+ authDatum.ad_type = KRB5_AUTHDATA_RADIUS_AVP;
+#ifdef HAVE_HEIMDAL_VERSION
+ authDatum.ad_data.length = attrBuf.length;
+ authDatum.ad_data.data = attrBuf.value;
+ authData->len = 1;
+ authData->val = &authDatum;
+#else
+ authDatum.length = attrBuf.length;
+ authDatum.contents = attrBuf.value;
+ authData[0] = &authDatum;
+ authData[1] = NULL;
+#endif
+
+ code = krbMakeAuthDataKdcIssued(krbContext, session, acceptorPrinc,
+ authData, kdcIssuedAuthData);
+ if (code != 0) {
+ major = GSS_S_FAILURE;
+ *minor = code;
+ } else {
+ major = GSS_S_COMPLETE;
+ }
+
+ gss_release_buffer(&tmpMinor, &attrBuf);
+
+ return major;
+}
+
+/*
+ * Fabricate a ticket to ourselves given a GSS EAP context.
+ */
+OM_uint32
+gssEapMakeReauthCreds(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_cred_id_t cred,
+ gss_buffer_t credBuf)
+{
+ OM_uint32 major = GSS_S_COMPLETE;
+ krb5_error_code code;
+ krb5_context krbContext = NULL;
+ krb5_keyblock session = { 0 }, acceptorKey = { 0 };
+ krb5_principal server = NULL;
+#ifdef HAVE_HEIMDAL_VERSION
+ Ticket ticket;
+ EncTicketPart enc_part;
+ AuthorizationData authData = { 0 };
+ krb5_crypto krbCrypto = NULL;
- krb5_data *ticketData = NULL, credsData = { 0 };
++ krb5_data ticketData = { 0 };
++ krb5_data encPartData = { 0 };
++ size_t len;
+#else
+ krb5_ticket ticket;
+ krb5_enc_tkt_part enc_part;
++ krb5_data *ticketData = NULL;
+#endif
- code = krb5_c_make_random_key(krbContext, ctx->encryptionType,
- &session);
++ krb5_data credsData = { 0 };
+ krb5_creds creds = { 0 };
+ krb5_auth_context authContext = NULL;
+
+ memset(&ticket, 0, sizeof(ticket));
+ memset(&enc_part, 0, sizeof(enc_part));
+
+ credBuf->length = 0;
+ credBuf->value = NULL;
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ code = getAcceptorKey(krbContext, ctx, cred, &server, &acceptorKey);
+ if (code == KRB5_KT_NOTFOUND) {
+ *minor = code;
+ return GSS_S_UNAVAILABLE;
+ } else if (code != 0)
+ goto cleanup;
+
+#ifdef HAVE_HEIMDAL_VERSION
+ ticket.realm = server->realm;
+ ticket.sname = server->name;
+#else
+ ticket.server = server;
+#endif
+
+ /*
+ * Generate a random session key to place in the ticket and
+ * sign the "KDC-Issued" authorization data element.
+ */
- #ifdef HAVE_HEIMDAL_VERSION
++#ifdef HAVE_HEIMDAL_VERSION
++ code = krb5_generate_random_keyblock(krbContext, ctx->encryptionType,
++ &session);
+ if (code != 0)
+ goto cleanup;
+
- ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size, &enc_part, &len, code);
+ enc_part.flags.initial = 1;
+ enc_part.key = session;
+ enc_part.crealm = ctx->initiatorName->krbPrincipal->realm;
+ enc_part.cname = ctx->initiatorName->krbPrincipal->name;
+ enc_part.authtime = time(NULL);
+ enc_part.starttime = &enc_part.authtime;
+ enc_part.endtime = (ctx->expiryTime != 0)
+ ? ctx->expiryTime : KRB_TIME_FOREVER;
+ enc_part.renew_till = NULL;
+ enc_part.authorization_data = &authData;
+
+ major = freezeAttrContext(minor, ctx->initiatorName, server,
+ &session, &authData);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
- buf,
- len,
++ ASN1_MALLOC_ENCODE(EncTicketPart, encPartData.data, encPartData.length,
++ &enc_part, &len, code);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_crypto_init(krbContext, &acceptorKey, 0, &krbCrypto);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_encrypt_EncryptedData(krbContext,
+ krbCrypto,
+ KRB5_KU_TICKET,
- GSSEAP_FREE(buf);
- buf = NULL;
-
- ASN1_MALLOC_ENCODE(Ticket, buf, buf_size, &ticket, &len, code);
++ encPartData.data,
++ encPartData.length,
+ 0,
+ &ticket.enc_part);
+ if (code != 0)
+ goto cleanup;
+
- creds.ticket = *ticketData;
++ ASN1_MALLOC_ENCODE(Ticket, ticketData.data, ticketData.length,
++ &ticket, &len, code);
+ if (code != 0)
+ goto cleanup;
+#else
++ code = krb5_c_make_random_key(krbContext, ctx->encryptionType,
++ &session);
++ if (code != 0)
++ goto cleanup;
++
+ enc_part.flags = TKT_FLG_INITIAL;
+ enc_part.session = &session;
+ enc_part.client = ctx->initiatorName->krbPrincipal;
+ enc_part.times.authtime = time(NULL);
+ enc_part.times.starttime = enc_part.times.authtime;
+ enc_part.times.endtime = (ctx->expiryTime != 0)
+ ? ctx->expiryTime
+ : KRB_TIME_FOREVER;
+ enc_part.times.renew_till = 0;
+
+ major = freezeAttrContext(minor, ctx->initiatorName, server,
+ &session, &enc_part.authorization_data);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ ticket.enc_part2 = &enc_part;
+
+ code = krb5_encrypt_tkt_part(krbContext, &acceptorKey, &ticket);
+ if (code != 0)
+ goto cleanup;
+
+ code = encode_krb5_ticket(&ticket, &ticketData);
+ if (code != 0)
+ goto cleanup;
+#endif /* HAVE_HEIMDAL_VERSION */
+
+ creds.client = ctx->initiatorName->krbPrincipal;
+ creds.server = server;
+#ifdef HAVE_HEIMDAL_VERSION
+ creds.session = session;
+ creds.times.authtime = enc_part.authtime;
+ creds.times.starttime = *enc_part.starttime;
+ creds.times.endtime = enc_part.endtime;
+ creds.times.renew_till = 0;
+ creds.flags.b = enc_part.flags;
- if (buf != NULL)
- GSSEAP_FREE(buf);
++ creds.ticket = ticketData;
+ creds.authdata = authData;
+#else
+ creds.keyblock = session;
+ creds.times = enc_part.times;
+ creds.ticket_flags = enc_part.flags;
+ creds.ticket = *ticketData;
+ creds.authdata = enc_part.authorization_data;
+#endif
+
+ code = krb5_auth_con_init(krbContext, &authContext);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_auth_con_setflags(krbContext, authContext, 0);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_auth_con_setsendsubkey(krbContext, authContext,
+ &ctx->rfc3961Key);
+ if (code != 0)
+ goto cleanup;
+
+ code = krbMakeCred(krbContext, authContext, &creds, &credsData);
+ if (code != 0)
+ goto cleanup;
+
+ krbDataToGssBuffer(&credsData, credBuf);
+
+cleanup:
+#ifdef HAVE_HEIMDAL_VERSION
+ if (krbCrypto != NULL)
+ krb5_crypto_destroy(krbContext, krbCrypto);
- krb5_free_data(krbContext, ticketData);
+ free_AuthorizationData(&authData);
+ free_EncryptedData(&ticket.enc_part);
++ krb5_data_free(&ticketData);
++ krb5_data_free(&encPartData);
+#else
+ krb5_free_authdata(krbContext, enc_part.authorization_data);
+ if (ticket.enc_part.ciphertext.data != NULL)
+ GSSEAP_FREE(ticket.enc_part.ciphertext.data);
++ krb5_free_data(krbContext, ticketData);
+#endif
+ krb5_free_keyblock_contents(krbContext, &session);
+ krb5_free_principal(krbContext, server);
+ krb5_free_keyblock_contents(krbContext, &acceptorKey);
+ krb5_auth_con_free(krbContext, authContext);
+
+ if (major == GSS_S_COMPLETE) {
+ *minor = code;
+ major = (code != 0) ? GSS_S_FAILURE : GSS_S_COMPLETE;
+ }
+
+ return major;
+}
+
+static int
+isTicketGrantingServiceP(krb5_context krbContext,
+ krb5_const_principal principal)
+{
+ if (KRB_PRINC_LENGTH(principal) == 2 &&
+#ifdef HAVE_HEIMDAL_VERSION
+ strcmp(KRB_PRINC_NAME(principal)[0], "krbtgt") == 0
+#else
+ krb5_princ_component(krbContext, principal, 0)->length == 6 &&
+ memcmp(krb5_princ_component(krbContext,
+ principal, 0)->data, "krbtgt", 6) == 0
+#endif
+ )
+ return TRUE;
+
+ return FALSE;
+}
+
+/*
+ * Returns TRUE if the configuration variable reauth_use_ccache is
+ * set in krb5.conf for the eap_gss application and the client realm.
+ */
+static int
+reauthUseCredsCache(krb5_context krbContext,
+ krb5_principal principal)
+{
+ int reauthUseCCache;
+
+ /* if reauth_use_ccache, use default credentials cache if ticket is for us */
+ krb5_appdefault_boolean(krbContext, "eap_gss",
+ KRB_PRINC_REALM(principal),
+ "reauth_use_ccache", 0, &reauthUseCCache);
+
+ return reauthUseCCache;
+}
+
+/*
+ * Look in default credentials cache for reauthentication credentials,
+ * if policy allows.
+ */
+static OM_uint32
+getDefaultReauthCredentials(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_name_t target,
+ time_t now,
+ OM_uint32 timeReq)
+{
+ OM_uint32 major = GSS_S_CRED_UNAVAIL;
+ krb5_context krbContext = NULL;
+ krb5_error_code code = 0;
+ krb5_ccache ccache = NULL;
+ krb5_creds match = { 0 };
+ krb5_creds creds = { 0 };
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ assert(cred != GSS_C_NO_CREDENTIAL);
+ assert(target != GSS_C_NO_NAME);
+
+ if (cred->name == GSS_C_NO_NAME ||
+ !reauthUseCredsCache(krbContext, cred->name->krbPrincipal))
+ goto cleanup;
+
+ match.client = cred->name->krbPrincipal;
+ match.server = target->krbPrincipal;
+ if (timeReq != 0 && timeReq != GSS_C_INDEFINITE)
+ match.times.endtime = now + timeReq;
+
+ code = krb5_cc_default(krbContext, &ccache);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_cc_retrieve_cred(krbContext, ccache, 0, &match, &creds);
+ if (code != 0)
+ goto cleanup;
+
+ cred->flags |= CRED_FLAG_DEFAULT_CCACHE;
+ cred->krbCredCache = ccache;
+ ccache = NULL;
+
+ major = gss_krb5_import_cred(minor, cred->krbCredCache, NULL, NULL,
+ &cred->krbCred);
+
+cleanup:
+ if (major == GSS_S_CRED_UNAVAIL)
+ *minor = code;
+
+ if (ccache != NULL)
+ krb5_cc_close(krbContext, ccache);
+ krb5_free_cred_contents(krbContext, &creds);
+
+ return major;
+}
+
+/*
+ * Returns TRUE if the credential handle's reauth credentials are
+ * valid or if we can use the default credentials cache. Credentials
+ * handle must be locked.
+ */
+int
+gssEapCanReauthP(gss_cred_id_t cred,
+ gss_name_t target,
+ OM_uint32 timeReq)
+{
+ time_t now, expiryReq;
+ OM_uint32 minor;
+
+ assert(cred != GSS_C_NO_CREDENTIAL);
+
+ now = time(NULL);
+ expiryReq = now;
+ if (timeReq != GSS_C_INDEFINITE)
+ expiryReq += timeReq;
+
+ if (cred->krbCredCache != NULL && cred->expiryTime > expiryReq)
+ return TRUE;
+
+ if (getDefaultReauthCredentials(&minor, cred, target,
+ now, timeReq) == GSS_S_COMPLETE)
+ return TRUE;
+
+ return FALSE;
+}
+
+/*
+ * Store re-authentication (Kerberos) credentials in a credential handle.
+ * Credentials handle must be locked.
+ */
+OM_uint32
+gssEapStoreReauthCreds(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_cred_id_t cred,
+ gss_buffer_t credBuf)
+{
+ OM_uint32 major = GSS_S_COMPLETE;
+ krb5_error_code code;
+ krb5_context krbContext = NULL;
+ krb5_auth_context authContext = NULL;
+ krb5_data credData = { 0 };
+ krb5_creds **creds = NULL;
+ krb5_principal canonPrinc;
+ krb5_principal ccPrinc = NULL;
+ int i;
+
+ if (credBuf->length == 0 || cred == GSS_C_NO_CREDENTIAL)
+ return GSS_S_COMPLETE;
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ code = krb5_auth_con_init(krbContext, &authContext);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_auth_con_setflags(krbContext, authContext, 0);
+ if (code != 0)
+ goto cleanup;
+
+ code = krb5_auth_con_setrecvsubkey(krbContext, authContext,
+ &ctx->rfc3961Key);
+ if (code != 0)
+ goto cleanup;
+
+ gssBufferToKrbData(credBuf, &credData);
+
+ code = krb5_rd_cred(krbContext, authContext, &credData, &creds, NULL);
+ if (code != 0)
+ goto cleanup;
+
+ if (creds == NULL || creds[0] == NULL)
+ goto cleanup;
+
+ code = krb5_copy_principal(krbContext, creds[0]->client, &canonPrinc);
+ if (code != 0)
+ goto cleanup;
+
+ krb5_free_principal(krbContext, cred->name->krbPrincipal);
+ cred->name->krbPrincipal = canonPrinc;
+
+ if (creds[0]->times.endtime == KRB_TIME_FOREVER)
+ cred->expiryTime = 0;
+ else
+ cred->expiryTime = creds[0]->times.endtime;
+
+ if (cred->krbCredCache == NULL) {
+ if (reauthUseCredsCache(krbContext, creds[0]->client) &&
+ krb5_cc_default(krbContext, &cred->krbCredCache) == 0)
+ cred->flags |= CRED_FLAG_DEFAULT_CCACHE;
+ } else {
+ /*
+ * If we already have an associated credentials cache, possibly from
+ * the last time we stored a reauthentication credential, then we
+ * need to clear it out and release the associated GSS credential.
+ */
+ if (cred->flags & CRED_FLAG_DEFAULT_CCACHE) {
+ krb5_cc_remove_cred(krbContext, cred->krbCredCache, 0, creds[0]);
+ } else {
+ krb5_cc_destroy(krbContext, cred->krbCredCache);
+ cred->krbCredCache = NULL;
+ }
+ gssReleaseCred(minor, &cred->krbCred);
+ }
+
+ if (cred->krbCredCache == NULL) {
+ code = krb5_cc_new_unique(krbContext, "MEMORY", NULL, &cred->krbCredCache);
+ if (code != 0)
+ goto cleanup;
+ }
+
+ if ((cred->flags & CRED_FLAG_DEFAULT_CCACHE) == 0 ||
+ krb5_cc_get_principal(krbContext, cred->krbCredCache, &ccPrinc) != 0) {
+ code = krb5_cc_initialize(krbContext, cred->krbCredCache,
+ creds[0]->client);
+ if (code != 0)
+ goto cleanup;
+ }
+
+ for (i = 0; creds[i] != NULL; i++) {
+ krb5_creds kcred = *(creds[i]);
+
+ /*
+ * Swap in the acceptor name the client asked for so
+ * get_credentials() works. We're making the assumption that
+ * any service tickets returned are for us. We'll need to
+ * reflect some more on whether that is a safe assumption.
+ */
+ if (!isTicketGrantingServiceP(krbContext, kcred.server))
+ kcred.server = ctx->acceptorName->krbPrincipal;
+
+ code = krb5_cc_store_cred(krbContext, cred->krbCredCache, &kcred);
+ if (code != 0)
+ goto cleanup;
+ }
+
+ major = gss_krb5_import_cred(minor, cred->krbCredCache, NULL, NULL,
+ &cred->krbCred);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+cleanup:
+ *minor = code;
+
+ krb5_free_principal(krbContext, ccPrinc);
+ krb5_auth_con_free(krbContext, authContext);
+ if (creds != NULL) {
+ for (i = 0; creds[i] != NULL; i++)
+ krb5_free_creds(krbContext, creds[i]);
+ GSSEAP_FREE(creds);
+ }
+ if (major == GSS_S_COMPLETE)
+ major = *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
+
+ return major;
+}
+
+#ifndef HAVE_HEIMDAL_VERSION
+static gss_buffer_desc radiusAvpKrbAttr = {
+ sizeof("urn:authdata-radius-avp") - 1, "urn:authdata-radius-avp"
+};
+#endif
+
+/*
+ * Unfortunately extracting an AD-KDCIssued authorization data element
+ * is pretty implementation-dependent. It's not possible to verify the
+ * signature ourselves because the ticket session key is not exposed
+ * outside GSS. In an ideal world, all AD-KDCIssued elements would be
+ * verified by the Kerberos library and authentication would fail if
+ * verification failed. We're not quite there yet and as a result have
+ * to go through some hoops to get this to work. The alternative would
+ * be to sign the authorization data with our long-term key, but it
+ * seems a pity to compromise the design because of current implementation
+ * limitations.
+ *
+ * (Specifically, the hoops involve a libkrb5 authorisation data plugin
+ * that exposes the verified and serialised attribute context through
+ * the Kerberos GSS mechanism's naming extensions API.)
+ */
+static OM_uint32
+defrostAttrContext(OM_uint32 *minor,
+ gss_ctx_id_t glueContext,
+ gss_name_t glueName,
+ gss_name_t mechName)
+{
+ OM_uint32 major, tmpMinor;
+#ifdef HAVE_HEIMDAL_VERSION
+ gss_OID_desc oid = { 0 };
+ gss_buffer_set_t authData = GSS_C_NO_BUFFER_SET;
+#else
+ gss_buffer_desc authData = GSS_C_EMPTY_BUFFER;
+ gss_buffer_desc authDataDisplay = GSS_C_EMPTY_BUFFER;
+ int more = -1;
+ int authenticated, complete;
+#endif
+
+#ifdef HAVE_HEIMDAL_VERSION
+ major = composeOid(minor,
+ GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->elements,
+ GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->length,
+ KRB5_AUTHDATA_RADIUS_AVP, &oid);
+ if (GSS_ERROR(major))
+ return major;
+
+ /* XXX we are assuming that this verifies AD-KDCIssued signature */
+ major = gssInquireSecContextByOid(minor, glueContext,
+ &oid, &authData);
+ if (major == GSS_S_COMPLETE) {
+ if (authData == GSS_C_NO_BUFFER_SET || authData->count != 1)
+ major = GSS_S_FAILURE;
+ else
+ major = gssEapImportAttrContext(minor, authData->elements, mechName);
+ } else if (major == GSS_S_FAILURE && *minor == ENOENT) {
+ /* This is the equivalent of GSS_S_UNAVAILABLE for MIT attr APIs */
+ *minor = 0;
+ major = GSS_S_COMPLETE;
+ }
+
+ gss_release_buffer_set(&tmpMinor, &authData);
+ GSSEAP_FREE(oid.elements);
+#else
+ major = gssGetNameAttribute(minor, glueName, &radiusAvpKrbAttr,
+ &authenticated, &complete,
+ &authData, &authDataDisplay, &more);
+ if (major == GSS_S_COMPLETE) {
+ if (authenticated == 0)
+ major = GSS_S_BAD_NAME;
+ else
+ major = gssEapImportAttrContext(minor, &authData, mechName);
+ } else if (major == GSS_S_UNAVAILABLE) {
+ major = GSS_S_COMPLETE;
+ }
+
+ gss_release_buffer(&tmpMinor, &authData);
+ gss_release_buffer(&tmpMinor, &authDataDisplay);
+#endif /* HAVE_HEIMDAL_VERSION */
+
+ return major;
+}
+
+/*
+ * Convert a mechanism glue to an EAP mechanism name by displaying and
+ * importing it. This also handles the RADIUS attributes.
+ */
+OM_uint32
+gssEapGlueToMechName(OM_uint32 *minor,
+ gss_ctx_id_t glueContext,
+ gss_name_t glueName,
+ gss_name_t *pMechName)
+{
+ OM_uint32 major, tmpMinor;
+ gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
+
+ *pMechName = GSS_C_NO_NAME;
+
+ major = gssDisplayName(minor, glueName, &nameBuf, NULL);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ pMechName);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = defrostAttrContext(minor, glueContext, glueName, *pMechName);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+cleanup:
+ if (GSS_ERROR(major)) {
+ gssReleaseName(&tmpMinor, pMechName);
+ *pMechName = GSS_C_NO_NAME;
+ }
+
+ gss_release_buffer(&tmpMinor, &nameBuf);
+
+ return major;
+}
+
+/*
+ * Convert an EAP mechanism name to a mechanism glue name by displaying
+ * and importing it.
+ */
+OM_uint32
+gssEapMechToGlueName(OM_uint32 *minor,
+ gss_name_t mechName,
+ gss_name_t *pGlueName)
+{
+ OM_uint32 major, tmpMinor;
+ gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
+
+ *pGlueName = GSS_C_NO_NAME;
+
+ major = gssEapDisplayName(minor, mechName, &nameBuf, NULL);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = gssImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ pGlueName);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+cleanup:
+ gss_release_buffer(&tmpMinor, &nameBuf);
+
+ return major;
+}
+
+/*
+ * Suck out the analgous elements of a Kerberos GSS context into an EAP
+ * one so that the application doesn't know the difference.
+ */
+OM_uint32
+gssEapReauthComplete(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_cred_id_t cred,
+ const gss_OID mech,
+ OM_uint32 timeRec)
+{
+ OM_uint32 major, tmpMinor;
+ gss_buffer_set_t keyData = GSS_C_NO_BUFFER_SET;
+ krb5_context krbContext = NULL;
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_storage *sp = NULL;
+#endif
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ if (!oidEqual(mech, gss_mech_krb5)) {
+ major = GSS_S_BAD_MECH;
+ goto cleanup;
+ }
+
+ /* Get the raw subsession key and encryption type */
+#ifdef HAVE_HEIMDAL_VERSION
+#define KRB_GSS_SUBKEY_COUNT 1 /* encoded session key */
+ major = gssInquireSecContextByOid(minor, ctx->kerberosCtx,
+ GSS_KRB5_GET_SUBKEY_X, &keyData);
+#else
+#define KRB_GSS_SUBKEY_COUNT 2 /* raw session key, enctype OID */
+ major = gssInquireSecContextByOid(minor, ctx->kerberosCtx,
+ GSS_C_INQ_SSPI_SESSION_KEY, &keyData);
+#endif
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ if (keyData == GSS_C_NO_BUFFER_SET || keyData->count < KRB_GSS_SUBKEY_COUNT) {
+ *minor = GSSEAP_KEY_UNAVAILABLE;
+ major = GSS_S_FAILURE;
+ goto cleanup;
+ }
+
+#ifdef HAVE_HEIMDAL_VERSION
+ sp = krb5_storage_from_mem(keyData->elements[0].value,
+ keyData->elements[0].length);
+ if (sp == NULL) {
+ *minor = ENOMEM;
+ major = GSS_S_FAILURE;
+ goto cleanup;
+ }
+
+ *minor = krb5_ret_keyblock(sp, &ctx->rfc3961Key);
+ if (*minor != 0) {
+ major = GSS_S_FAILURE;
+ goto cleanup;
+ }
+#else
+ {
+ gss_OID_desc oid;
+ int suffix;
+
+ oid.length = keyData->elements[1].length;
+ oid.elements = keyData->elements[1].value;
+
+ /* GSS_KRB5_SESSION_KEY_ENCTYPE_OID */
+ major = decomposeOid(minor,
+ "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x04",
+ 10, &oid, &suffix);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ ctx->encryptionType = suffix;
+ }
+
+ {
+ krb5_keyblock key;
+
+ KRB_KEY_LENGTH(&key) = keyData->elements[0].length;
+ KRB_KEY_DATA(&key) = keyData->elements[0].value;
+ KRB_KEY_TYPE(&key) = ctx->encryptionType;
+
+ *minor = krb5_copy_keyblock_contents(krbContext,
+ &key, &ctx->rfc3961Key);
+ if (*minor != 0) {
+ major = GSS_S_FAILURE;
+ goto cleanup;
+ }
+ }
+#endif /* HAVE_HEIMDAL_VERSION */
+
+ major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
+ &ctx->checksumType);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ if (timeRec != GSS_C_INDEFINITE)
+ ctx->expiryTime = time(NULL) + timeRec;
+
+ /* Initialize our sequence state */
+ major = sequenceInit(minor,
+ &ctx->seqState, ctx->recvSeq,
+ ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
+ ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
+ TRUE);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = GSS_S_COMPLETE;
+
+cleanup:
+#ifdef HAVE_HEIMDAL_VERSION
+ if (sp != NULL)
+ krb5_storage_free(sp);
+#endif
+ gss_release_buffer_set(&tmpMinor, &keyData);
+
+ return major;
+}
+
+/*
+ * The remainder of this file consists of wrappers so we can call into the
+ * mechanism glue without calling ourselves.
+ */
+static OM_uint32
+(*gssInitSecContextNext)(OM_uint32 *,
+ gss_cred_id_t,
+ gss_ctx_id_t *,
+ gss_name_t,
+ gss_OID,
+ OM_uint32,
+ OM_uint32,
+ gss_channel_bindings_t,
+ gss_buffer_t,
+ gss_OID *,
+ gss_buffer_t,
+ OM_uint32 *,
+ OM_uint32 *);
+
+static OM_uint32
+(*gssAcceptSecContextNext)(OM_uint32 *,
+ gss_ctx_id_t *,
+ gss_cred_id_t,
+ gss_buffer_t,
+ gss_channel_bindings_t,
+ gss_name_t *,
+ gss_OID *,
+ gss_buffer_t,
+ OM_uint32 *,
+ OM_uint32 *,
+ gss_cred_id_t *);
+
+static OM_uint32
+(*gssReleaseCredNext)(OM_uint32 *, gss_cred_id_t *);
+
+static OM_uint32
+(*gssReleaseNameNext)(OM_uint32 *, gss_name_t *);
+
+static OM_uint32
+(*gssInquireSecContextByOidNext)(OM_uint32 *,
+ const gss_ctx_id_t,
+ const gss_OID,
+ gss_buffer_set_t *);
+
+static OM_uint32
+(*gssDeleteSecContextNext)(OM_uint32 *,
+ gss_ctx_id_t *,
+ gss_buffer_t);
+
+static OM_uint32
+(*gssDisplayNameNext)(OM_uint32 *,
+ gss_name_t,
+ gss_buffer_t,
+ gss_OID *);
+
+static OM_uint32
+(*gssImportNameNext)(OM_uint32 *,
+ gss_buffer_t,
+ gss_OID,
+ gss_name_t *);
+
+static OM_uint32
+(*gssStoreCredNext)(OM_uint32 *,
+ const gss_cred_id_t,
+ gss_cred_usage_t,
+ const gss_OID,
+ OM_uint32,
+ OM_uint32,
+ gss_OID_set *,
+ gss_cred_usage_t *);
+
+static OM_uint32
+(*gssGetNameAttributeNext)(OM_uint32 *,
+ gss_name_t,
+ gss_buffer_t,
+ int *,
+ int *,
+ gss_buffer_t,
+ gss_buffer_t,
+ int *);
+
+#define NEXT_SYMBOL(local, global) do { \
+ ((local) = dlsym(RTLD_NEXT, (global))); \
+ if ((local) == NULL) { \
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL; \
+ major = GSS_S_UNAVAILABLE; \
+ /* but continue */ \
+ } \
+ } while (0)
+
+OM_uint32
+gssEapReauthInitialize(OM_uint32 *minor)
+{
+ OM_uint32 major = GSS_S_COMPLETE;
+
+ NEXT_SYMBOL(gssInitSecContextNext, "gss_init_sec_context");
+ NEXT_SYMBOL(gssAcceptSecContextNext, "gss_accept_sec_context");
+ NEXT_SYMBOL(gssReleaseCredNext, "gss_release_cred");
+ NEXT_SYMBOL(gssReleaseNameNext, "gss_release_name");
+ NEXT_SYMBOL(gssInquireSecContextByOidNext, "gss_inquire_sec_context_by_oid");
+ NEXT_SYMBOL(gssDeleteSecContextNext, "gss_delete_sec_context");
+ NEXT_SYMBOL(gssDisplayNameNext, "gss_display_name");
+ NEXT_SYMBOL(gssImportNameNext, "gss_import_name");
+ NEXT_SYMBOL(gssStoreCredNext, "gss_store_cred");
++#ifndef HAVE_HEIMDAL_VERSION
+ NEXT_SYMBOL(gssGetNameAttributeNext, "gss_get_name_attribute");
++#endif
+
+ return major;
+}
+
+OM_uint32
+gssInitSecContext(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t *context_handle,
+ gss_name_t target_name,
+ gss_OID mech_type,
+ OM_uint32 req_flags,
+ OM_uint32 time_req,
+ gss_channel_bindings_t input_chan_bindings,
+ gss_buffer_t input_token,
+ gss_OID *actual_mech_type,
+ gss_buffer_t output_token,
+ OM_uint32 *ret_flags,
+ OM_uint32 *time_rec)
+{
+ if (gssInitSecContextNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssInitSecContextNext(minor, cred, context_handle,
+ target_name, mech_type, req_flags,
+ time_req, input_chan_bindings,
+ input_token, actual_mech_type,
+ output_token, ret_flags, time_rec);
+}
+
+OM_uint32
+gssAcceptSecContext(OM_uint32 *minor,
+ gss_ctx_id_t *context_handle,
+ gss_cred_id_t cred,
+ gss_buffer_t input_token,
+ 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)
+{
+ if (gssAcceptSecContextNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssAcceptSecContextNext(minor, context_handle, cred,
+ input_token, input_chan_bindings,
+ src_name, mech_type, output_token,
+ ret_flags, time_rec, delegated_cred_handle);
+}
+
+OM_uint32
+gssReleaseCred(OM_uint32 *minor,
+ gss_cred_id_t *cred_handle)
+{
+ if (gssReleaseCredNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssReleaseCredNext(minor, cred_handle);
+}
+
+OM_uint32
+gssReleaseName(OM_uint32 *minor,
+ gss_name_t *name)
+{
+ if (gssReleaseName == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssReleaseNameNext(minor, name);
+}
+
+OM_uint32
+gssDeleteSecContext(OM_uint32 *minor,
+ gss_ctx_id_t *context_handle,
+ gss_buffer_t output_token)
+{
+ if (gssDeleteSecContextNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssDeleteSecContextNext(minor, context_handle, output_token);
+}
+
+static OM_uint32
+gssDisplayName(OM_uint32 *minor,
+ gss_name_t name,
+ gss_buffer_t buffer,
+ gss_OID *name_type)
+{
+ if (gssDisplayNameNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssDisplayNameNext(minor, name, buffer, name_type);
+}
+
+static OM_uint32
+gssImportName(OM_uint32 *minor,
+ gss_buffer_t buffer,
+ gss_OID name_type,
+ gss_name_t *name)
+{
+ if (gssImportNameNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssImportNameNext(minor, buffer, name_type, name);
+}
+
+OM_uint32
+gssInquireSecContextByOid(OM_uint32 *minor,
+ const gss_ctx_id_t context_handle,
+ const gss_OID desired_object,
+ gss_buffer_set_t *data_set)
+{
+ if (gssInquireSecContextByOidNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssInquireSecContextByOidNext(minor, context_handle,
+ desired_object, data_set);
+}
+
+OM_uint32
+gssStoreCred(OM_uint32 *minor,
+ const gss_cred_id_t input_cred_handle,
+ gss_cred_usage_t input_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)
+{
+ if (gssStoreCredNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssStoreCredNext(minor, input_cred_handle, input_usage,
+ desired_mech, overwrite_cred, default_cred,
+ elements_stored, cred_usage_stored);
+}
+
+OM_uint32
+gssGetNameAttribute(OM_uint32 *minor,
+ gss_name_t name,
+ gss_buffer_t attr,
+ int *authenticated,
+ int *complete,
+ gss_buffer_t value,
+ gss_buffer_t display_value,
+ int *more)
+{
+ if (gssGetNameAttributeNext == NULL) {
+ *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ return gssGetNameAttributeNext(minor, name, attr, authenticated, complete,
+ value, display_value, more);
+}
projects / moonshot.git / commitdiff