/*
- * Copyright (c) 2010, JANET(UK)
+ * Copyright (c) 2011, JANET(UK)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*
*/
+/*
+ * Utility functions.
+ */
+
#ifndef _UTIL_H_
#define _UTIL_H_ 1
+#include <sys/param.h>
#include <string.h>
#include <errno.h>
extern "C" {
#endif
-#ifndef MIN /* Usually found in <sys/param.h>. */
+#ifndef MIN
#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
#endif
-#define KRB_KEY_TYPE(key) ((key)->enctype)
-#define KRB_KEY_DATA(key) ((key)->contents)
-#define KRB_KEY_LENGTH(key) ((key)->length)
-#define KRB_KEY_INIT(key) do { \
- KRB_KEY_TYPE(key) = ENCTYPE_NULL; \
- KRB_KEY_DATA(key) = NULL; \
- KRB_KEY_LENGTH(key) = 0; \
- } while (0)
-
-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, /* draft-ietf-kitten-gss-naming */
- TOK_TYPE_DELETE_CONTEXT = 0x0405, /* RFC 2743 delete context */
- TOK_TYPE_EAP_RESP = 0x0601, /* draft-howlett-eap-gss */
- TOK_TYPE_EAP_REQ = 0x0602, /* draft-howlett-eap-gss */
- TOK_TYPE_EXT_REQ = 0x0603, /* draft-howlett-eap-gss */
- TOK_TYPE_EXT_RESP = 0x0604, /* to be specified */
- TOK_TYPE_GSS_REAUTH = 0x0605, /* to be specified */
-};
-
-#define EAP_EXPORT_CONTEXT_V1 1
-
-/* util_alloc.c */
-void *
-gssEapCalloc(size_t nmemb, size_t size);
-
-void *
-gssEapMalloc(size_t size);
-
-void
-gssEapFree(void *ptr);
-
-void *
-gssEapRealloc(void *ptr, size_t size);
+#if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
+#define GSSEAP_UNUSED __attribute__ ((__unused__))
+#else
+#define GSSEAP_UNUSED
+#endif
/* util_buffer.c */
OM_uint32
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);
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,
#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_INITIATOR_CONTEXT = 0x0601, /* initiator-sent context token */
+ TOK_TYPE_ACCEPTOR_CONTEXT = 0x0602, /* acceptor-sent context token */
+};
+
+/* inner token types and flags */
+#define ITOK_TYPE_NONE 0x00000000
+#define ITOK_TYPE_CONTEXT_ERR 0x00000001 /* critical */
+#define ITOK_TYPE_ACCEPTOR_NAME_REQ 0x00000002 /* TBD */
+#define ITOK_TYPE_ACCEPTOR_NAME_RESP 0x00000003 /* TBD */
+#define ITOK_TYPE_EAP_RESP 0x00000004 /* critical, required, if not reauth */
+#define ITOK_TYPE_EAP_REQ 0x00000005 /* critical, required, if not reauth */
+#define ITOK_TYPE_GSS_CHANNEL_BINDINGS 0x00000006 /* critical, required, if not reauth */
+#define ITOK_TYPE_REAUTH_CREDS 0x00000007 /* optional */
+#define ITOK_TYPE_REAUTH_REQ 0x00000008 /* optional */
+#define ITOK_TYPE_REAUTH_RESP 0x00000009 /* optional */
+#define ITOK_TYPE_VERSION_INFO 0x0000000A /* optional */
+#define ITOK_TYPE_VENDOR_INFO 0x0000000B /* optional */
+
+#define ITOK_FLAG_CRITICAL 0x80000000 /* critical, wire flag */
+#define ITOK_FLAG_VERIFIED 0x40000000 /* verified, API flag */
+
+#define ITOK_TYPE_MASK (~(ITOK_FLAG_CRITICAL | ITOK_FLAG_VERIFIED))
+
OM_uint32 gssEapAllocContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
OM_uint32 gssEapReleaseContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
/* util_crypt.c */
int
gssEapEncrypt(krb5_context context, int dce_style, size_t ec,
- size_t rrc, krb5_keyblock *key, int usage, krb5_pointer iv,
+ 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, krb5_keyblock *key, int usage, krb5_pointer iv,
+ 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);
-krb5_cryptotype
+int
gssEapMapCryptoFlag(OM_uint32 type);
gss_iov_buffer_t
krb5_keyblock *pKey);
/* util_krb.c */
-OM_uint32
-gssEapKerberosInit(OM_uint32 *minor, krb5_context *context);
+#ifdef HAVE_HEIMDAL_VERSION
-OM_uint32
-rfc3961ChecksumTypeForKey(OM_uint32 *minor,
- krb5_keyblock *key,
- krb5_cksumtype *cksumtype);
+#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)
#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_OID *const pInternalizedOid);
OM_uint32
+gssEapReleaseOid(OM_uint32 *minor, gss_OID *oid);
+
+OM_uint32
gssEapDefaultMech(OM_uint32 *minor,
gss_OID *oid);
sequenceInit(OM_uint32 *minor, void **vqueue, uint64_t seqnum,
int do_replay, int do_sequence, int wide_nums);
+/* util_sm.c */
+enum gss_eap_state {
+ GSSEAP_STATE_INITIAL = 0x01, /* initial state */
+ GSSEAP_STATE_AUTHENTICATE = 0x02, /* exchange EAP messages */
+ GSSEAP_STATE_INITIATOR_EXTS = 0x04, /* initiator extensions */
+ GSSEAP_STATE_ACCEPTOR_EXTS = 0x08, /* acceptor extensions */
+#ifdef GSSEAP_ENABLE_REAUTH
+ GSSEAP_STATE_REAUTHENTICATE = 0x10, /* GSS reauthentication messages */
+#endif
+ GSSEAP_STATE_ESTABLISHED = 0x20, /* context established */
+ GSSEAP_STATE_ALL = 0x3F
+};
+
+#define GSSEAP_STATE_NEXT(s) ((s) << 1)
+
+#define GSSEAP_SM_STATE(ctx) ((ctx)->state)
+
+#ifdef GSSEAP_DEBUG
+void gssEapSmTransition(gss_ctx_id_t ctx, enum gss_eap_state state);
+#define GSSEAP_SM_TRANSITION(ctx, state) gssEapSmTransition((ctx), (state))
+#else
+#define GSSEAP_SM_TRANSITION(ctx, newstate) do { (ctx)->state = (newstate); } while (0)
+#endif
+
+#define GSSEAP_SM_TRANSITION_NEXT(ctx) GSSEAP_SM_TRANSITION((ctx), GSSEAP_STATE_NEXT(GSSEAP_SM_STATE((ctx))))
+
+/* state machine entry */
+struct gss_eap_sm {
+ OM_uint32 inputTokenType;
+ OM_uint32 outputTokenType;
+ enum gss_eap_state validStates;
+ OM_uint32 itokFlags;
+ OM_uint32 (*processToken)(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_buffer_t,
+ OM_uint32 *);
+};
+
+/* state machine flags, set by handler */
+#define SM_FLAG_FORCE_SEND_TOKEN 0x00000001 /* send token even if no inner tokens */
+#define SM_FLAG_OUTPUT_TOKEN_CRITICAL 0x00000002 /* output token is critical */
+
+/* state machine flags, set by state machine */
+#define SM_FLAG_INPUT_TOKEN_CRITICAL 0x10000000 /* input token was critical */
+
+#define SM_ITOK_FLAG_REQUIRED 0x00000001 /* received tokens must be present */
+
+OM_uint32
+gssEapSmStep(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target,
+ gss_OID mech,
+ OM_uint32 reqFlags,
+ OM_uint32 timeReq,
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ struct gss_eap_sm *sm,
+ size_t smCount);
+
+void
+gssEapSmTransition(gss_ctx_id_t ctx, enum gss_eap_state state);
+
/* util_token.c */
+OM_uint32
+gssEapEncodeInnerTokens(OM_uint32 *minor,
+ gss_buffer_set_t extensions,
+ OM_uint32 *types,
+ gss_buffer_t buffer);
+OM_uint32
+gssEapDecodeInnerTokens(OM_uint32 *minor,
+ const gss_buffer_t buffer,
+ gss_buffer_set_t *pExtensions,
+ OM_uint32 **pTypes);
+
size_t
tokenSize(const gss_OID_desc *mech, size_t body_size);
/* Helper macros */
-#define GSSEAP_CALLOC(count, size) (gssEapCalloc((count), (size)))
-#define GSSEAP_MALLOC(size) (gssEapMalloc((size)))
-#define GSSEAP_FREE(ptr) (gssEapFree((ptr)))
-#define GSSEAP_REALLOC(ptr, size) (gssEapRealloc((ptr), (size)))
+#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"); \
}
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;
projects / mech_eap.git / blobdiff