/*
- * 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
}
static void
-peerSetConfigBlob(void *ctx, struct wpa_config_blob *blob)
+peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
+ struct wpa_config_blob *blob GSSEAP_UNUSED)
{
}
static const struct wpa_config_blob *
-peerGetConfigBlob(void *ctx, const char *name)
+peerGetConfigBlob(void *ctx GSSEAP_UNUSED,
+ const char *name GSSEAP_UNUSED)
{
return NULL;
}
static void
-peerNotifyPending(void *ctx)
+peerNotifyPending(void *ctx GSSEAP_UNUSED)
{
}
peerNotifyPending,
};
+#ifdef GSSEAP_DEBUG
+extern int wpa_debug_level;
+#endif
+
static OM_uint32
peerConfigInit(OM_uint32 *minor,
gss_cred_id_t cred,
- gss_ctx_id_t ctx,
- int loadConfig)
+ gss_ctx_id_t ctx)
{
+ OM_uint32 major;
krb5_context krbContext;
struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
- krb5_error_code code;
- char *identity;
+ gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
+ gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
+
+ eapPeerConfig->identity = NULL;
+ eapPeerConfig->identity_len = 0;
+ eapPeerConfig->anonymous_identity = NULL;
+ eapPeerConfig->anonymous_identity_len = 0;
+ eapPeerConfig->password = NULL;
+ eapPeerConfig->password_len = 0;
+
+ assert(cred != GSS_C_NO_CREDENTIAL);
GSSEAP_KRB_INIT(&krbContext);
- if (loadConfig) {
+ 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;
+ /* identity */
+ major = gssEapDisplayName(minor, cred->name, &identity, NULL);
+ if (GSS_ERROR(major))
+ return major;
+
+ eapPeerConfig->identity = (unsigned char *)identity.value;
+ eapPeerConfig->identity_len = identity.length;
+
+ krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
+
+ /* anonymous_identity */
+ eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
+ if (eapPeerConfig->anonymous_identity == NULL) {
+ *minor = ENOMEM;
return GSS_S_FAILURE;
}
- eapPeerConfig->identity = (unsigned char *)identity;
- eapPeerConfig->identity_len = strlen(identity);
+ eapPeerConfig->anonymous_identity[0] = '@';
+ memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
+ eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
+ eapPeerConfig->anonymous_identity_len = 1 + realm.length;
+
+ /* password */
eapPeerConfig->password = (unsigned char *)cred->password.value;
eapPeerConfig->password_len = cred->password.length;
+ *minor = 0;
return GSS_S_COMPLETE;
}
peerConfigFree(OM_uint32 *minor,
gss_ctx_id_t ctx)
{
- krb5_context krbContext;
struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
- GSSEAP_KRB_INIT(&krbContext);
+ if (eapPeerConfig->identity != NULL) {
+ GSSEAP_FREE(eapPeerConfig->identity);
+ eapPeerConfig->identity = NULL;
+ eapPeerConfig->identity_len = 0;
+ }
- krb5_free_unparsed_name(krbContext, (char *)eapPeerConfig->identity);
+ if (eapPeerConfig->anonymous_identity != NULL) {
+ GSSEAP_FREE(eapPeerConfig->anonymous_identity);
+ eapPeerConfig->anonymous_identity = NULL;
+ eapPeerConfig->anonymous_identity_len = 0;
+ }
+ *minor = 0;
return GSS_S_COMPLETE;
}
+/*
+ * Mark an initiator context as ready for cryptographic operations
+ */
static OM_uint32
-peerDeriveKey(OM_uint32 *minor,
- gss_ctx_id_t ctx)
+initReady(OM_uint32 *minor, gss_ctx_id_t ctx, OM_uint32 reqFlags)
{
OM_uint32 major;
const unsigned char *key;
size_t keyLength;
- krb5_context krbContext;
- GSSEAP_KRB_INIT(&krbContext);
+#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 (ctx->encryptionType != ENCTYPE_NULL &&
- eap_key_available(ctx->initiatorCtx.eap)) {
- key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
+ if (!eap_key_available(ctx->initiatorCtx.eap)) {
+ *minor = GSSEAP_KEY_UNAVAILABLE;
+ return GSS_S_UNAVAILABLE;
+ }
- major = gssEapDeriveRFC3961Key(minor, key, keyLength,
- ctx->encryptionType, &ctx->rfc3961Key);
- if (GSS_ERROR(major))
+ 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;
- } else {
- /*
- * draft-howlett-eap-gss says that integrity/confidentialty should
- * always be advertised as available, but if we have no keying
- * material it seems confusing to the caller to advertise this.
- */
- ctx->gssFlags &= ~(GSS_C_INTEG_FLAG | GSS_C_CONF_FLAG);
+ }
+
+ GSSEAP_MUTEX_UNLOCK(&target->mutex);
}
+ major = gssEapCanonicalizeOid(minor,
+ mech,
+ OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
+ &ctx->mechanismUsed);
+ 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
-eapGssSmInitAuthenticate(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)
+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;
- int initialContextToken = 0, code;
+ 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);
- initialContextToken = (inputToken == GSS_C_NO_BUFFER ||
- inputToken->length == 0);
+ if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
+ if (!gssEapCanReauthP(cred, target, timeReq))
+ return GSS_S_CONTINUE_NEEDED;
- major = peerConfigInit(minor, cred, ctx, initialContextToken);
+ 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;
+ }
+
+ major = gssEapMechToGlueName(minor, target, &mechTarget);
if (GSS_ERROR(major))
goto cleanup;
- if (initialContextToken) {
- ctx->flags |= CTX_FLAG_EAP_PORT_ENABLED;
+ major = gssInitSecContext(minor,
+ cred->krbCred,
+ &ctx->reauthCtx,
+ mechTarget,
+ (gss_OID)gss_mech_krb5,
+ reqFlags | GSS_C_MUTUAL_FLAG,
+ timeReq,
+ chanBindings,
+ inputToken,
+ &actualMech,
+ outputToken,
+ &gssFlags,
+ &timeRec);
+ if (GSS_ERROR(major))
+ goto cleanup;
- ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
- &gssEapPolicyCallbacks,
- ctx,
- &ctx->initiatorCtx.eapConfig);
+ ctx->gssFlags = gssFlags;
- time(&now);
- if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
- ctx->expiryTime = 0;
- else
- ctx->expiryTime = now + timeReq;
+ 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);
+ }
- major = gss_duplicate_name(minor, target, &ctx->acceptorName);
- if (GSS_ERROR(major))
- goto cleanup;
+cleanup:
+ gssReleaseName(&tmpMinor, &mechTarget);
- if (mech == GSS_C_NULL_OID || oidEqual(mech, GSS_EAP_MECHANISM)) {
- 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;
- }
+ 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) {
+
+ /* 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->mechanismUsed,
+ &ctx->acceptorName);
+ if (GSS_ERROR(major))
+ return major;
}
- wpabuf_set(&ctx->initiatorCtx.reqData,
- inputToken->value, inputToken->length);
+ /*
+ * 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;
+ }
- code = eap_peer_sm_step(ctx->initiatorCtx.eap);
+ return GSS_S_CONTINUE_NEEDED;
+}
- if (ctx->flags & CTX_FLAG_EAP_RESP) {
- struct wpabuf *resp;
- gss_buffer_desc buf;
+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->reauthCtx, 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_RESP);
+ ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
- resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
+ /* poke EAP state machine */
+ if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
+ *minor = GSSEAP_PEER_SM_STEP_FAILURE;
+ return GSS_S_FAILURE;
+ }
- if (resp != NULL) {
- buf.length = wpabuf_len(resp);
- buf.value = (void *)wpabuf_head(resp);
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
- major = duplicateBuffer(minor, &buf, outputToken);
- if (GSS_ERROR(major))
- goto cleanup;
+ *minor = 0;
- major = GSS_S_CONTINUE_NEEDED;
- }
- }
+ 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);
- if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
- major = peerDeriveKey(minor, ctx);
+ 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);
- ctx->state = EAP_STATE_ESTABLISHED;
- major = GSS_S_COMPLETE;
- } else if (code == 0) {
- major = GSS_S_FAILURE;
+ 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);
}
static OM_uint32
-eapGssSmInitKeyTransport(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)
+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)
{
- GSSEAP_NOT_IMPLEMENTED;
+ 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
-eapGssSmInitSecureAssoc(OM_uint32 *minor,
+eapGssSmInitReauthCreds(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_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)
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
{
- GSSEAP_NOT_IMPLEMENTED;
+ 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
-eapGssSmInitGssChannelBindings(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)
+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_NOT_IMPLEMENTED;
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+
+ *minor = 0;
+ *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
+
+ return GSS_S_CONTINUE_NEEDED;
}
static OM_uint32
-eapGssSmInitEstablished(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)
+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)
{
- /* Called with already established context */
- *minor = EINVAL;
- return GSS_S_BAD_STATUS;
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
+
+ *minor = 0;
+
+ return GSS_S_COMPLETE;
}
-static struct eap_gss_initiator_sm {
- enum gss_eap_token_type inputTokenType;
- enum gss_eap_token_type outputTokenType;
- 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);
-} eapGssInitiatorSm[] = {
- { TOK_TYPE_EAP_REQ, TOK_TYPE_EAP_RESP, eapGssSmInitAuthenticate },
- { TOK_TYPE_EAP_REQ, TOK_TYPE_EAP_RESP, eapGssSmInitKeyTransport },
- { TOK_TYPE_EAP_REQ, TOK_TYPE_EAP_RESP, eapGssSmInitSecureAssoc },
- { TOK_TYPE_GSS_CB, TOK_TYPE_NONE, eapGssSmInitGssChannelBindings },
- { TOK_TYPE_NONE, TOK_TYPE_NONE, eapGssSmInitEstablished },
+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
{
OM_uint32 major, tmpMinor;
gss_ctx_id_t ctx = *context_handle;
- struct eap_gss_initiator_sm *sm = NULL;
- gss_buffer_desc innerInputToken, innerOutputToken;
+ int initialContextToken = 0;
*minor = 0;
- innerOutputToken.length = 0;
- innerOutputToken.value = NULL;
-
output_token->length = 0;
output_token->value = NULL;
- if (cred != GSS_C_NO_CREDENTIAL && !(cred->flags & CRED_FLAG_INITIATE)) {
- return GSS_S_NO_CRED;
- }
-
if (ctx == GSS_C_NO_CONTEXT) {
if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
+ *minor = GSSEAP_WRONG_SIZE;
return GSS_S_DEFECTIVE_TOKEN;
}
return major;
ctx->flags |= CTX_FLAG_INITIATOR;
+ initialContextToken = 1;
*context_handle = ctx;
}
GSSEAP_MUTEX_LOCK(&ctx->mutex);
- sm = &eapGssInitiatorSm[ctx->state];
+ 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;
+ }
- if (input_token != GSS_C_NO_BUFFER) {
- major = gssEapVerifyToken(minor, ctx, input_token,
- sm->inputTokenType, &innerInputToken);
- if (GSS_ERROR(major))
- goto cleanup;
- } else {
- innerInputToken.length = 0;
- innerInputToken.value = NULL;
+ cred = ctx->defaultCred;
}
- /*
- * Advance through state machine whilst empty tokens are emitted and
- * the status is not GSS_S_COMPLETE or an error status.
- */
- do {
- major = (sm->processToken)(minor,
- cred,
- ctx,
- target_name,
- mech_type,
- req_flags,
- time_req,
- input_chan_bindings,
- &innerInputToken,
- &innerOutputToken);
+ GSSEAP_MUTEX_LOCK(&cred->mutex);
+
+ if ((cred->flags & CRED_FLAG_INITIATE) == 0) {
+ major = GSS_S_NO_CRED;
+ *minor = GSSEAP_CRED_USAGE_MISMATCH;
+ goto cleanup;
+ }
+
+ if (initialContextToken) {
+ major = initBegin(minor, cred, ctx, target_name, mech_type,
+ req_flags, time_req, input_chan_bindings);
if (GSS_ERROR(major))
goto cleanup;
- } while (major == GSS_S_CONTINUE_NEEDED && innerOutputToken.length == 0);
+ }
+
+ 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 (innerOutputToken.length != 0) {
- major = gssEapMakeToken(minor, ctx, &innerOutputToken,
- sm->outputTokenType, output_token);
- if (GSS_ERROR(major))
+ OM_uint32 tmpMajor;
+
+ tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
+ if (GSS_ERROR(tmpMajor)) {
+ major = tmpMajor;
+ *minor = tmpMinor;
goto cleanup;
+ }
}
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 || major == GSS_S_CONTINUE_NEEDED);
+ 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, context_handle);
- gss_release_buffer(&tmpMinor, &innerOutputToken);
-
return major;
}
projects / moonshot.git / blobdiff