/*
- * Copyright (c) 2010, JANET(UK)
+ * Copyright (c) 2011, JANET(UK)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* SUCH DAMAGE.
*/
+/*
+ * Establish a security context on the initiator (client). These functions
+ * wrap around libeap.
+ */
+
#include "gssapiP_eap.h"
static OM_uint32
return flag;
}
+static struct eap_peer_config *
+peerGetConfig(void *ctx)
+{
+ gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
+
+ return &gssCtx->initiatorCtx.eapPeerConfig;
+}
+
static Boolean
peerGetBool(void *data, enum eapol_bool_var variable)
{
ctx->flags &= ~(flag);
}
-static int
+static unsigned int
peerGetInt(void *data, enum eapol_int_var variable)
{
gss_ctx_id_t ctx = data;
}
}
+static struct wpabuf *
+peerGetEapReqData(void *ctx)
+{
+ gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
+
+ return &gssCtx->initiatorCtx.reqData;
+}
+
+static void
+peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
+ struct wpa_config_blob *blob GSSEAP_UNUSED)
+{
+}
+
+static const struct wpa_config_blob *
+peerGetConfigBlob(void *ctx GSSEAP_UNUSED,
+ const char *name GSSEAP_UNUSED)
+{
+ return NULL;
+}
+
+static void
+peerNotifyPending(void *ctx GSSEAP_UNUSED)
+{
+}
+
+static struct eapol_callbacks gssEapPolicyCallbacks = {
+ peerGetConfig,
+ peerGetBool,
+ peerSetBool,
+ peerGetInt,
+ peerSetInt,
+ peerGetEapReqData,
+ peerSetConfigBlob,
+ peerGetConfigBlob,
+ peerNotifyPending,
+};
+
+#ifdef GSSEAP_DEBUG
+extern int wpa_debug_level;
+#endif
+
static OM_uint32
-eapGssSmAuthenticate(OM_uint32 *minor,
- gss_cred_id_t cred,
- gss_ctx_id_t ctx,
- 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_buffer_t output_token)
+peerConfigInit(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx)
+{
+ krb5_context krbContext;
+ struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
+ krb5_error_code code;
+ char *identity, *anonymousIdentity;
+
+ eapPeerConfig->identity = NULL;
+ eapPeerConfig->identity_len = 0;
+ eapPeerConfig->password = NULL;
+ eapPeerConfig->password_len = 0;
+
+ assert(cred != GSS_C_NO_CREDENTIAL);
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ eapPeerConfig->fragment_size = 1024;
+#ifdef GSSEAP_DEBUG
+ wpa_debug_level = 0;
+#endif
+
+ assert(cred->name != GSS_C_NO_NAME);
+
+ if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
+ *minor = GSSEAP_BAD_INITIATOR_NAME;
+ return GSS_S_BAD_NAME;
+ }
+
+ code = krb5_unparse_name(krbContext, cred->name->krbPrincipal, &identity);
+ if (code != 0) {
+ *minor = code;
+ return GSS_S_FAILURE;
+ }
+
+ anonymousIdentity = strchr(identity, '@');
+ if (anonymousIdentity == NULL)
+ anonymousIdentity = "";
+
+ eapPeerConfig->identity = (unsigned char *)identity;
+ eapPeerConfig->identity_len = strlen(identity);
+ eapPeerConfig->anonymous_identity = (unsigned char *)anonymousIdentity;
+ eapPeerConfig->anonymous_identity_len = strlen(anonymousIdentity);
+ eapPeerConfig->password = (unsigned char *)cred->password.value;
+ eapPeerConfig->password_len = cred->password.length;
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+static OM_uint32
+peerConfigFree(OM_uint32 *minor,
+ gss_ctx_id_t ctx)
+{
+ krb5_context krbContext;
+ struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ krb5_free_unparsed_name(krbContext, (char *)eapPeerConfig->identity);
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+/*
+ * Mark an initiator context as ready for cryptographic operations
+ */
+static OM_uint32
+initReady(OM_uint32 *minor, gss_ctx_id_t ctx, OM_uint32 reqFlags)
+{
+ OM_uint32 major;
+ const unsigned char *key;
+ size_t keyLength;
+
+#if 1
+ /* XXX actually check for mutual auth */
+ if (reqFlags & GSS_C_MUTUAL_FLAG)
+ ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
+#endif
+
+ /* Cache encryption type derived from selected mechanism OID */
+ major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
+ if (GSS_ERROR(major))
+ return major;
+
+ if (!eap_key_available(ctx->initiatorCtx.eap)) {
+ *minor = GSSEAP_KEY_UNAVAILABLE;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
+
+ if (keyLength < EAP_EMSK_LEN) {
+ *minor = GSSEAP_KEY_TOO_SHORT;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ major = gssEapDeriveRfc3961Key(minor,
+ &key[EAP_EMSK_LEN / 2],
+ EAP_EMSK_LEN / 2,
+ ctx->encryptionType,
+ &ctx->rfc3961Key);
+ if (GSS_ERROR(major))
+ return major;
+
+ major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
+ &ctx->checksumType);
+ if (GSS_ERROR(major))
+ return major;
+
+ 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))
+ return major;
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+static OM_uint32
+initBegin(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target,
+ gss_OID mech,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
+{
+ OM_uint32 major;
+
+ assert(cred != GSS_C_NO_CREDENTIAL);
+
+ if (cred->expiryTime)
+ ctx->expiryTime = cred->expiryTime;
+ else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
+ ctx->expiryTime = 0;
+ else
+ ctx->expiryTime = time(NULL) + timeReq;
+
+ /*
+ * The credential mutex protects its name, however we need to
+ * explicitly lock the acceptor name (unlikely as it may be
+ * that it has attributes set on it).
+ */
+ major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
+ if (GSS_ERROR(major))
+ return major;
+
+ if (target != GSS_C_NO_NAME) {
+ GSSEAP_MUTEX_LOCK(&target->mutex);
+
+ major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
+ if (GSS_ERROR(major)) {
+ GSSEAP_MUTEX_UNLOCK(&target->mutex);
+ return major;
+ }
+
+ GSSEAP_MUTEX_UNLOCK(&target->mutex);
+ }
+
+ if (mech == GSS_C_NULL_OID) {
+ major = gssEapDefaultMech(minor, &ctx->mechanismUsed);
+ } else if (gssEapIsConcreteMechanismOid(mech)) {
+ if (!gssEapInternalizeOid(mech, &ctx->mechanismUsed))
+ major = duplicateOid(minor, mech, &ctx->mechanismUsed);
+ } else {
+ major = GSS_S_BAD_MECH;
+ *minor = GSSEAP_WRONG_MECH;
+ }
+ if (GSS_ERROR(major))
+ return major;
+
+ /* If credentials were provided, check they're usable with this mech */
+ if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
+ *minor = GSSEAP_CRED_MECH_MISMATCH;
+ return GSS_S_BAD_MECH;
+ }
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+static OM_uint32
+eapGssSmInitError(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx GSSEAP_UNUSED,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ OM_uint32 major;
+ unsigned char *p;
+
+ if (inputToken->length < 8) {
+ *minor = GSSEAP_TOK_TRUNC;
+ return GSS_S_DEFECTIVE_TOKEN;
+ }
+
+ p = (unsigned char *)inputToken->value;
+
+ major = load_uint32_be(&p[0]);
+ *minor = ERROR_TABLE_BASE_eapg + load_uint32_be(&p[4]);
+
+ if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
+ major = GSS_S_FAILURE;
+ *minor = GSSEAP_BAD_ERROR_TOKEN;
+ }
+
+ assert(GSS_ERROR(major));
+
+ return major;
+}
+
+#ifdef GSSEAP_ENABLE_REAUTH
+static OM_uint32
+eapGssSmInitGssReauth(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags,
+ OM_uint32 timeReq,
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
{
OM_uint32 major, tmpMinor;
- time_t now;
+ gss_name_t mechTarget = GSS_C_NO_NAME;
+ gss_OID actualMech = GSS_C_NO_OID;
+ OM_uint32 gssFlags, timeRec;
+
+ assert(cred != GSS_C_NO_CREDENTIAL);
+
+ if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
+ if (!gssEapCanReauthP(cred, target, timeReq))
+ return GSS_S_CONTINUE_NEEDED;
+
+ ctx->flags |= CTX_FLAG_KRB_REAUTH;
+ } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
+ major = GSS_S_DEFECTIVE_TOKEN;
+ *minor = GSSEAP_WRONG_ITOK;
+ goto cleanup;
+ }
- if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
- /* first time */
- req_flags &= GSS_C_TRANS_FLAG | GSS_C_REPLAY_FLAG | GSS_C_DCE_STYLE;
- ctx->gssFlags |= req_flags;
+ major = gssEapMechToGlueName(minor, target, &mechTarget);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = gssInitSecContext(minor,
+ cred->krbCred,
+ &ctx->kerberosCtx,
+ mechTarget,
+ (gss_OID)gss_mech_krb5,
+ reqFlags | GSS_C_MUTUAL_FLAG,
+ timeReq,
+ chanBindings,
+ inputToken,
+ &actualMech,
+ outputToken,
+ &gssFlags,
+ &timeRec);
+ if (GSS_ERROR(major))
+ goto cleanup;
- time(&now);
+ ctx->gssFlags = gssFlags;
- if (time_req == 0 || time_req == GSS_C_INDEFINITE)
- ctx->expiryTime = 0;
- else
- ctx->expiryTime = now + time_req;
+ if (major == GSS_S_COMPLETE) {
+ assert(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
- major = gss_duplicate_name(minor, cred->name, &ctx->initiatorName);
+ major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
if (GSS_ERROR(major))
goto cleanup;
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
+ } else {
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
+ }
+
+cleanup:
+ gssReleaseName(&tmpMinor, &mechTarget);
+
+ return major;
+}
+#endif /* GSSEAP_ENABLE_REAUTH */
+
+#ifdef GSSEAP_DEBUG
+static OM_uint32
+eapGssSmInitVendorInfo(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx GSSEAP_UNUSED,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ OM_uint32 major;
+
+ major = makeStringBuffer(minor, "JANET(UK)", outputToken);
+ if (GSS_ERROR(major))
+ return major;
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+#endif
+
+static OM_uint32
+eapGssSmInitAcceptorName(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ OM_uint32 major;
+
+ if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
+ ctx->acceptorName != GSS_C_NO_NAME) {
- major = gss_duplicate_name(minor, target_name, &ctx->acceptorName);
+ /* Send desired target name to acceptor */
+ major = gssEapDisplayName(minor, ctx->acceptorName,
+ outputToken, NULL);
if (GSS_ERROR(major))
- goto cleanup;
+ return major;
+ } else if (inputToken != GSS_C_NO_BUFFER &&
+ ctx->acceptorName == GSS_C_NO_NAME) {
+ /* Accept target name hint from acceptor */
+ major = gssEapImportName(minor, inputToken,
+ GSS_C_NT_USER_NAME, &ctx->acceptorName);
+ if (GSS_ERROR(major))
+ return major;
+ }
- if (mech_type == GSS_C_NULL_OID ||
- oidEqual(mech_type, GSS_EAP_MECHANISM)) {
- major = gssEapDefaultMech(minor, &ctx->mechanismUsed);
- } else if (gssEapIsMechanismOid(mech_type)) {
- if (!gssEapInternalizeOid(mech_type, &ctx->mechanismUsed))
- major = duplicateOid(minor, mech_type, &ctx->mechanismUsed);
- } else {
- major = GSS_S_BAD_MECH;
- }
+ /*
+ * Currently, other parts of the code assume that the acceptor name
+ * is available, hence this check.
+ */
+ if (ctx->acceptorName == GSS_C_NO_NAME) {
+ *minor = GSSEAP_NO_ACCEPTOR_NAME;
+ return GSS_S_FAILURE;
+ }
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+
+static OM_uint32
+eapGssSmInitIdentity(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags)
+{
+ struct eap_config eapConfig;
+
+#ifdef GSSEAP_ENABLE_REAUTH
+ if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
+ OM_uint32 tmpMinor;
+
+ /* server didn't support reauthentication, sent EAP request */
+ gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
+ ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
+ } else
+#endif
+ *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
+
+ assert((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
+ assert(inputToken == GSS_C_NO_BUFFER);
+
+ memset(&eapConfig, 0, sizeof(eapConfig));
+
+ ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
+ &gssEapPolicyCallbacks,
+ ctx,
+ &eapConfig);
+ if (ctx->initiatorCtx.eap == NULL) {
+ *minor = GSSEAP_PEER_SM_INIT_FAILURE;
+ return GSS_S_FAILURE;
+ }
+
+ ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
+
+ /* poke EAP state machine */
+ if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
+ *minor = GSSEAP_PEER_SM_STEP_FAILURE;
+ return GSS_S_FAILURE;
+ }
+
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+
+ *minor = 0;
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+
+static OM_uint32
+eapGssSmInitAuthenticate(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
+{
+ OM_uint32 major;
+ OM_uint32 tmpMinor;
+ int code;
+ struct wpabuf *resp = NULL;
+
+ *minor = 0;
+
+ assert(inputToken != GSS_C_NO_BUFFER);
+
+ major = peerConfigInit(minor, cred, ctx);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ assert(ctx->initiatorCtx.eap != NULL);
+ assert(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
+
+ ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
+
+ wpabuf_set(&ctx->initiatorCtx.reqData,
+ inputToken->value, inputToken->length);
+
+ major = GSS_S_CONTINUE_NEEDED;
+
+ code = eap_peer_sm_step(ctx->initiatorCtx.eap);
+ if (ctx->flags & CTX_FLAG_EAP_RESP) {
+ ctx->flags &= ~(CTX_FLAG_EAP_RESP);
+
+ resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
+ } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
+ major = initReady(minor, ctx, reqFlags);
if (GSS_ERROR(major))
goto cleanup;
+
+ ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
+ major = GSS_S_CONTINUE_NEEDED;
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+ } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
+ major = GSS_S_DEFECTIVE_CREDENTIAL;
+ *minor = GSSEAP_PEER_AUTH_FAILURE;
+ } else {
+ major = GSS_S_DEFECTIVE_TOKEN;
+ *minor = GSSEAP_PEER_BAD_MESSAGE;
}
cleanup:
+ if (resp != NULL) {
+ OM_uint32 tmpMajor;
+ gss_buffer_desc respBuf;
+
+ assert(major == GSS_S_CONTINUE_NEEDED);
+
+ respBuf.length = wpabuf_len(resp);
+ respBuf.value = (void *)wpabuf_head(resp);
+
+ tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
+ if (GSS_ERROR(tmpMajor)) {
+ major = tmpMajor;
+ *minor = tmpMinor;
+ }
+
+ *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
+ }
+
+ wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
+ peerConfigFree(&tmpMinor, ctx);
+
return major;
}
-static eap_gss_initiator_sm eapGssSm[] = {
- eapGssSmAuthenticate,
- NULL,
- NULL,
- NULL,
- NULL,
+static OM_uint32
+eapGssSmInitGssChannelBindings(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
+{
+ OM_uint32 major;
+ gss_buffer_desc buffer = GSS_C_EMPTY_BUFFER;
+
+ if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS)
+ buffer = chanBindings->application_data;
+
+ major = gssEapWrap(minor, ctx, TRUE, GSS_C_QOP_DEFAULT,
+ &buffer, NULL, outputToken);
+ if (GSS_ERROR(major))
+ return major;
+
+ assert(outputToken->value != NULL);
+
+ *minor = 0;
+ *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+
+#ifdef GSSEAP_ENABLE_REAUTH
+static OM_uint32
+eapGssSmInitReauthCreds(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ OM_uint32 major;
+
+ if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
+ major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
+ if (GSS_ERROR(major))
+ return major;
+ }
+
+ *minor = 0;
+ return GSS_S_CONTINUE_NEEDED;
+}
+#endif /* GSSEAP_ENABLE_REAUTH */
+
+static OM_uint32
+eapGssSmInitCompleteInitiatorExts(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags)
+{
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+
+ *minor = 0;
+ *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+
+static OM_uint32
+eapGssSmInitCompleteAcceptorExts(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
+
+ *minor = 0;
+
+ return GSS_S_COMPLETE;
+}
+
+static struct gss_eap_sm eapGssInitiatorSm[] = {
+ {
+ ITOK_TYPE_CONTEXT_ERR,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
+ 0,
+ eapGssSmInitError
+ },
+ {
+ ITOK_TYPE_ACCEPTOR_NAME_RESP,
+ ITOK_TYPE_ACCEPTOR_NAME_REQ,
+ GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE,
+ 0,
+ eapGssSmInitAcceptorName
+ },
+#ifdef GSSEAP_DEBUG
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_VENDOR_INFO,
+ GSSEAP_STATE_INITIAL,
+ 0,
+ eapGssSmInitVendorInfo
+ },
+#endif
+#ifdef GSSEAP_ENABLE_REAUTH
+ {
+ ITOK_TYPE_REAUTH_RESP,
+ ITOK_TYPE_REAUTH_REQ,
+ GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
+ 0,
+ eapGssSmInitGssReauth
+ },
+#endif
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+#ifdef GSSEAP_ENABLE_REAUTH
+ GSSEAP_STATE_REAUTHENTICATE |
+#endif
+ GSSEAP_STATE_INITIAL,
+ SM_ITOK_FLAG_REQUIRED,
+ eapGssSmInitIdentity
+ },
+ {
+ ITOK_TYPE_EAP_REQ,
+ ITOK_TYPE_EAP_RESP,
+ GSSEAP_STATE_AUTHENTICATE,
+ SM_ITOK_FLAG_REQUIRED,
+ eapGssSmInitAuthenticate
+ },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_GSS_CHANNEL_BINDINGS,
+ GSSEAP_STATE_INITIATOR_EXTS,
+ SM_ITOK_FLAG_REQUIRED,
+ eapGssSmInitGssChannelBindings
+ },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIATOR_EXTS,
+ 0,
+ eapGssSmInitCompleteInitiatorExts
+ },
+#ifdef GSSEAP_ENABLE_REAUTH
+ {
+ ITOK_TYPE_REAUTH_CREDS,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_ACCEPTOR_EXTS,
+ 0,
+ eapGssSmInitReauthCreds
+ },
+#endif
+ /* other extensions go here */
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_ACCEPTOR_EXTS,
+ 0,
+ eapGssSmInitCompleteAcceptorExts
+ }
};
OM_uint32
gss_init_sec_context(OM_uint32 *minor,
gss_cred_id_t cred,
- gss_ctx_id_t *pCtx,
+ gss_ctx_id_t *context_handle,
gss_name_t target_name,
gss_OID mech_type,
OM_uint32 req_flags,
OM_uint32 *time_rec)
{
OM_uint32 major, tmpMinor;
- gss_ctx_id_t ctx = *pCtx;
+ gss_ctx_id_t ctx = *context_handle;
*minor = 0;
output_token->length = 0;
output_token->value = NULL;
- if (cred != GSS_C_NO_CREDENTIAL && !(cred->flags & CRED_FLAG_INITIATE)) {
- major = GSS_S_NO_CRED;
- goto cleanup;
- }
-
if (ctx == GSS_C_NO_CONTEXT) {
if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
- major = GSS_S_DEFECTIVE_TOKEN;
- goto cleanup;
+ *minor = GSSEAP_WRONG_SIZE;
+ return GSS_S_DEFECTIVE_TOKEN;
}
major = gssEapAllocContext(minor, &ctx);
if (GSS_ERROR(major))
- goto cleanup;
+ return major;
+
+ ctx->flags |= CTX_FLAG_INITIATOR;
- *pCtx = ctx;
+ major = initBegin(minor, cred, ctx, target_name, mech_type,
+ req_flags, time_req, input_chan_bindings);
+ if (GSS_ERROR(major)) {
+ gssEapReleaseContext(minor, &ctx);
+ return major;
+ }
+
+ *context_handle = ctx;
}
- for (; ctx->state != EAP_STATE_ESTABLISHED; ctx->state++) {
- major = (eapGssSm[ctx->state])(minor,
- cred,
- ctx,
- target_name,
- mech_type,
- req_flags,
- time_req,
- input_chan_bindings,
- input_token,
- output_token);
- if (GSS_ERROR(major))
- goto cleanup;
- if (output_token->length != 0) {
- assert(major == GSS_S_CONTINUE_NEEDED);
- break;
+ GSSEAP_MUTEX_LOCK(&ctx->mutex);
+
+ if (cred == GSS_C_NO_CREDENTIAL) {
+ if (ctx->defaultCred == GSS_C_NO_CREDENTIAL) {
+ major = gssEapAcquireCred(minor,
+ GSS_C_NO_NAME,
+ GSS_C_NO_BUFFER,
+ time_req,
+ GSS_C_NO_OID_SET,
+ GSS_C_INITIATE,
+ &ctx->defaultCred,
+ NULL,
+ NULL);
+ if (GSS_ERROR(major))
+ goto cleanup;
}
+
+ cred = ctx->defaultCred;
+ }
+
+ GSSEAP_MUTEX_LOCK(&cred->mutex);
+
+
+ if ((cred->flags & CRED_FLAG_INITIATE) == 0) {
+ major = GSS_S_NO_CRED;
+ *minor = GSSEAP_CRED_USAGE_MISMATCH;
+ goto cleanup;
}
+ major = gssEapSmStep(minor,
+ cred,
+ ctx,
+ target_name,
+ mech_type,
+ req_flags,
+ time_req,
+ input_chan_bindings,
+ input_token,
+ output_token,
+ eapGssInitiatorSm,
+ sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
+ if (GSS_ERROR(major))
+ goto cleanup;
+
if (actual_mech_type != NULL) {
if (!gssEapInternalizeOid(ctx->mechanismUsed, actual_mech_type))
duplicateOid(&tmpMinor, ctx->mechanismUsed, actual_mech_type);
if (ret_flags != NULL)
*ret_flags = ctx->gssFlags;
if (time_rec != NULL)
- gss_context_time(&tmpMinor, ctx, time_rec);
+ gssEapContextTime(&tmpMinor, ctx, time_rec);
- assert(ctx->state == EAP_STATE_ESTABLISHED || output_token->length != 0);
+ assert(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
cleanup:
+ if (cred != GSS_C_NO_CREDENTIAL)
+ GSSEAP_MUTEX_UNLOCK(&cred->mutex);
+ GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
+
if (GSS_ERROR(major))
- gssEapReleaseContext(&tmpMinor, pCtx);
+ gssEapReleaseContext(&tmpMinor, context_handle);
return major;
}
projects / mech_eap.git / blobdiff