#ifdef GSSEAP_ENABLE_REAUTH
static OM_uint32
eapGssSmAcceptGssReauth(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
- gss_buffer_t inputToken,
+ gss_ctx_id_t ctx,
+ gss_name_t target __attribute__((__unused__)),
+ gss_OID mech __attribute__((__unused__)),
+ OM_uint32 reqFlags __attribute__((__unused__)),
+ OM_uint32 timeReq __attribute__((__unused__)),
gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken);
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags);
#endif
/*
return GSS_S_COMPLETE;
}
+#ifdef GSSEAP_DEBUG
+static OM_uint32
+eapGssSmAcceptVendorInfo(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,
+ OM_uint32 *smFlags)
+{
+ fprintf(stderr, "GSS-EAP: vendor %.*s\n",
+ (int)inputToken->length, (char *)inputToken->value);
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+#endif
+
+
/*
* Emit a identity EAP request to force the initiator (peer) to identify
* itself.
*/
static OM_uint32
eapGssSmAcceptIdentity(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target __attribute__((__unused__)),
+ gss_OID mech __attribute__((__unused__)),
+ OM_uint32 reqFlags __attribute__((__unused__)),
+ OM_uint32 timeReq __attribute__((__unused__)),
+ gss_channel_bindings_t chanBindings __attribute__((__unused__)),
gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major;
struct wpabuf *reqData;
gss_buffer_desc pktBuffer;
+ if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
+ *minor = GSSEAP_CRED_MECH_MISMATCH;
+ return GSS_S_BAD_MECH;
+ }
+
if (inputToken != GSS_C_NO_BUFFER && inputToken->length != 0) {
*minor = GSSEAP_WRONG_SIZE;
return GSS_S_DEFECTIVE_TOKEN;
if (GSS_ERROR(major))
return major;
- ctx->state = GSSEAP_STATE_AUTHENTICATE;
-
wpabuf_free(reqData);
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+
*minor = 0;
+
return GSS_S_CONTINUE_NEEDED;
}
*/
static OM_uint32
eapGssSmAcceptAuthenticate(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
- gss_buffer_t inputToken,
+ gss_ctx_id_t ctx,
+ gss_name_t target __attribute__((__unused__)),
+ gss_OID mech __attribute__((__unused__)),
+ OM_uint32 reqFlags __attribute__((__unused__)),
+ OM_uint32 timeReq __attribute__((__unused__)),
gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major, tmpMinor;
struct rs_connection *rconn;
switch (frresp->code) {
case PW_AUTHENTICATION_ACK:
case PW_ACCESS_CHALLENGE:
- major = GSS_S_CONTINUE_NEEDED;
break;
case PW_AUTHENTICATION_REJECT:
*minor = GSSEAP_RADIUS_AUTH_FAILURE;
if (GSS_ERROR(major))
goto cleanup;
- ctx->state = GSSEAP_STATE_EXTENSIONS_REQ;
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
}
- *minor = 0;
major = GSS_S_CONTINUE_NEEDED;
+ *minor = 0;
cleanup:
if (request != NULL)
}
static OM_uint32
-eapGssSmAcceptExtensionsReq(OM_uint32 *minor,
- gss_ctx_id_t ctx,
- gss_cred_id_t cred,
- gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target __attribute__((__unused__)),
+ gss_OID mech __attribute__((__unused__)),
+ OM_uint32 reqFlags __attribute__((__unused__)),
+ OM_uint32 timeReq __attribute__((__unused__)),
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
- OM_uint32 major;
+ OM_uint32 major, tmpMinor;
+ gss_iov_buffer_desc iov[2];
- major = gssEapVerifyExtensions(minor, cred, ctx, chanBindings, inputToken);
+ iov[0].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE;
+ iov[0].buffer.length = 0;
+ iov[0].buffer.value = NULL;
+
+ iov[1].type = GSS_IOV_BUFFER_TYPE_STREAM;
+ iov[1].buffer = *inputToken;
+
+ major = gssEapUnwrapOrVerifyMIC(minor, ctx, NULL, NULL,
+ iov, 2, TOK_TYPE_WRAP);
if (GSS_ERROR(major))
- return major;
+ return GSS_S_BAD_BINDINGS;
- outputToken->length = 0;
- outputToken->value = NULL;
+ if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS &&
+ !bufferEqual(&iov[0].buffer, &chanBindings->application_data)) {
+ major = GSS_S_BAD_BINDINGS;
+ *minor = GSSEAP_BINDINGS_MISMATCH;
+ } else {
+ major = GSS_S_CONTINUE_NEEDED;
+ *minor = 0;
+ }
- ctx->state = GSSEAP_STATE_EXTENSIONS_RESP;
+ gss_release_buffer(&tmpMinor, &iov[0].buffer);
- *minor = 0;
- return GSS_S_CONTINUE_NEEDED;
+ return major;
}
+#ifdef GSSEAP_ENABLE_REAUTH
static OM_uint32
-eapGssSmAcceptExtensionsResp(OM_uint32 *minor,
- gss_ctx_id_t ctx,
- gss_cred_id_t cred,
- gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+eapGssSmAcceptReauthCreds(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target __attribute__((__unused__)),
+ gss_OID mech __attribute__((__unused__)),
+ OM_uint32 reqFlags __attribute__((__unused__)),
+ OM_uint32 timeReq __attribute__((__unused__)),
+ gss_channel_bindings_t chanBindings __attribute__((__unused__)),
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major;
- major = gssEapMakeExtensions(minor, cred, ctx, chanBindings, outputToken);
- if (GSS_ERROR(major))
- return major;
-
- ctx->state = GSSEAP_STATE_ESTABLISHED;
+ /*
+ * If we're built with fast reauthentication enabled, then
+ * fabricate a ticket from the initiator to ourselves.
+ */
+ major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
+ if (major == GSS_S_UNAVAILABLE)
+ major = GSS_S_COMPLETE;
+ if (major == GSS_S_COMPLETE)
+ major = GSS_S_CONTINUE_NEEDED;
- *minor = 0;
- return GSS_S_COMPLETE;
+ return major;
}
+#endif
static OM_uint32
-eapGssSmAcceptEstablished(OM_uint32 *minor,
- gss_ctx_id_t ctx,
- gss_cred_id_t cred,
- gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+eapGssSmAcceptCompleteInitiatorExts(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,
+ OM_uint32 *smFlags)
{
- /* Called with already established context */
- *minor = GSSEAP_CONTEXT_ESTABLISHED;
- return GSS_S_BAD_STATUS;
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+
+ *minor = 0;
+
+ return GSS_S_CONTINUE_NEEDED;
}
static OM_uint32
-makeErrorToken(OM_uint32 *minor,
- OM_uint32 majorStatus,
- OM_uint32 minorStatus,
- gss_buffer_t outputToken)
+eapGssSmAcceptCompleteAcceptorExts(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,
+ OM_uint32 *smFlags)
{
- unsigned char errorData[8];
- gss_buffer_desc errorBuffer;
-
- assert(GSS_ERROR(majorStatus));
-
- /*
- * Only return error codes that the initiator could have caused,
- * to avoid information leakage.
- */
- if (IS_RADIUS_ERROR(minorStatus)) {
- /* Squash RADIUS error codes */
- minorStatus = GSSEAP_RADIUS_PROT_FAILURE;
- } else if (!IS_WIRE_ERROR(minorStatus)) {
- /* Don't return non-wire error codes */
- return GSS_S_COMPLETE;
- }
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
- minorStatus -= ERROR_TABLE_BASE_eapg;
-
- store_uint32_be(majorStatus, &errorData[0]);
- store_uint32_be(minorStatus, &errorData[4]);
-
- errorBuffer.length = sizeof(errorData);
- errorBuffer.value = errorData;
+ *minor = 0;
+ *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
- return duplicateBuffer(minor, &errorBuffer, outputToken);
+ return GSS_S_COMPLETE;
}
-static struct gss_eap_acceptor_sm {
- enum gss_eap_token_type inputTokenType;
- enum gss_eap_token_type outputTokenType;
- OM_uint32 (*processToken)(OM_uint32 *,
- gss_ctx_id_t,
- gss_cred_id_t,
- gss_buffer_t,
- gss_channel_bindings_t,
- gss_buffer_t);
-} eapGssAcceptorSm[] = {
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, eapGssSmAcceptIdentity },
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, eapGssSmAcceptAuthenticate },
- { TOK_TYPE_EXT_REQ, TOK_TYPE_NONE, eapGssSmAcceptExtensionsReq },
- { TOK_TYPE_NONE, TOK_TYPE_EXT_RESP, eapGssSmAcceptExtensionsResp },
- { TOK_TYPE_NONE, TOK_TYPE_NONE, eapGssSmAcceptEstablished },
- { TOK_TYPE_NONE, TOK_TYPE_CONTEXT_ERR, NULL },
+static struct gss_eap_sm eapGssAcceptorSm[] = {
+#ifdef GSSEAP_DEBUG
+ {
+ ITOK_TYPE_VENDOR_INFO,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIAL,
+ 0,
+ eapGssSmAcceptVendorInfo,
+ },
+#endif
+#ifdef GSSEAP_ENABLE_REAUTH
+ {
+ ITOK_TYPE_REAUTH_REQ,
+ ITOK_TYPE_REAUTH_RESP,
+ GSSEAP_STATE_INITIAL,
+ 0,
+ eapGssSmAcceptGssReauth,
+ },
+#endif
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_EAP_REQ,
+ GSSEAP_STATE_INITIAL,
+ SM_ITOK_FLAG_CRITICAL | SM_ITOK_FLAG_REQUIRED,
+ eapGssSmAcceptIdentity,
+ },
+ {
+ ITOK_TYPE_EAP_RESP,
+ ITOK_TYPE_EAP_REQ,
+ GSSEAP_STATE_AUTHENTICATE,
+ SM_ITOK_FLAG_CRITICAL | SM_ITOK_FLAG_REQUIRED,
+ eapGssSmAcceptAuthenticate
+ },
+ {
+ ITOK_TYPE_GSS_CHANNEL_BINDINGS,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIATOR_EXTS,
+ SM_ITOK_FLAG_CRITICAL | SM_ITOK_FLAG_REQUIRED,
+ eapGssSmAcceptGssChannelBindings,
+ },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIATOR_EXTS,
+ 0,
+ eapGssSmAcceptCompleteInitiatorExts,
+ },
#ifdef GSSEAP_ENABLE_REAUTH
- { TOK_TYPE_GSS_REAUTH, TOK_TYPE_GSS_REAUTH, eapGssSmAcceptGssReauth },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_REAUTH_CREDS,
+ GSSEAP_STATE_ACCEPTOR_EXTS,
+ 0,
+ eapGssSmAcceptReauthCreds,
+ },
#endif
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_ACCEPTOR_EXTS,
+ 0,
+ eapGssSmAcceptCompleteAcceptorExts
+ },
};
OM_uint32
OM_uint32 *time_rec,
gss_cred_id_t *delegated_cred_handle)
{
- OM_uint32 major;
- OM_uint32 tmpMajor, tmpMinor;
+ OM_uint32 major, tmpMinor;
gss_ctx_id_t ctx = *context_handle;
- struct gss_eap_acceptor_sm *sm = NULL;
- gss_buffer_desc innerInputToken = GSS_C_EMPTY_BUFFER;
- gss_buffer_desc innerOutputToken = GSS_C_EMPTY_BUFFER;
- enum gss_eap_token_type tokType;
- int initialContextToken = 0;
*minor = 0;
if (GSS_ERROR(major))
return major;
- initialContextToken = 1;
*context_handle = ctx;
}
GSSEAP_MUTEX_LOCK(&cred->mutex);
- sm = &eapGssAcceptorSm[ctx->state];
-
- major = gssEapVerifyToken(minor, ctx, input_token,
- &tokType, &innerInputToken);
+ major = gssEapSmStep(minor,
+ cred,
+ ctx,
+ GSS_C_NO_NAME,
+ GSS_C_NO_OID,
+ 0,
+ GSS_C_INDEFINITE,
+ input_chan_bindings,
+ input_token,
+ output_token,
+ eapGssAcceptorSm,
+ sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
if (GSS_ERROR(major))
goto cleanup;
- if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
- *minor = GSSEAP_CRED_MECH_MISMATCH;
- major = GSS_S_BAD_MECH;
- goto cleanup;
- }
-
-#ifdef GSSEAP_ENABLE_REAUTH
- /*
- * If we're built with fast reauthentication support, it's valid
- * for an initiator to send a GSS reauthentication token as its
- * initial context token, causing us to short-circuit the state
- * machine and process Kerberos GSS messages instead.
- */
- if (tokType == TOK_TYPE_GSS_REAUTH && initialContextToken) {
- ctx->state = GSSEAP_STATE_KRB_REAUTH;
- } else
-#endif
- if (tokType != sm->inputTokenType) {
- *minor = GSSEAP_WRONG_TOK_ID;
- major = GSS_S_DEFECTIVE_TOKEN;
- goto cleanup;
- }
-
- do {
- sm = &eapGssAcceptorSm[ctx->state];
-
- major = (sm->processToken)(minor,
- ctx,
- cred,
- &innerInputToken,
- input_chan_bindings,
- &innerOutputToken);
- if (GSS_ERROR(major)) {
- /* Possibly generate an error token */
- tmpMajor = makeErrorToken(&tmpMinor, major, *minor, &innerOutputToken);
- if (GSS_ERROR(tmpMajor)) {
- major = tmpMajor;
- goto cleanup;
- }
-
- sm = &eapGssAcceptorSm[GSSEAP_STATE_ERROR];
- goto send_token;
- }
- } while (major == GSS_S_CONTINUE_NEEDED && innerOutputToken.length == 0);
-
if (mech_type != NULL) {
if (!gssEapInternalizeOid(ctx->mechanismUsed, mech_type))
duplicateOid(&tmpMinor, ctx->mechanismUsed, mech_type);
assert(ctx->state == GSSEAP_STATE_ESTABLISHED || major == GSS_S_CONTINUE_NEEDED);
-send_token:
- if (innerOutputToken.value != NULL) {
- tmpMajor = gssEapMakeToken(&tmpMinor, ctx, &innerOutputToken,
- sm->outputTokenType, output_token);
- if (GSS_ERROR(tmpMajor)) {
- major = tmpMajor;
- *minor = tmpMinor;
- goto cleanup;
- }
- }
-
cleanup:
if (cred != GSS_C_NO_CREDENTIAL)
GSSEAP_MUTEX_UNLOCK(&cred->mutex);
if (GSS_ERROR(major))
gssEapReleaseContext(&tmpMinor, context_handle);
- gss_release_buffer(&tmpMinor, &innerOutputToken);
-
return major;
}
if (GSS_ERROR(major))
return major;
- ctx->state = GSSEAP_STATE_ESTABLISHED;
-
*minor = 0;
return GSS_S_COMPLETE;
}
static OM_uint32
eapGssSmAcceptGssReauth(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
- gss_buffer_t inputToken,
+ gss_ctx_id_t ctx,
+ gss_name_t target __attribute__((__unused__)),
+ gss_OID mech,
+ OM_uint32 reqFlags __attribute__((__unused__)),
+ OM_uint32 timeReq __attribute__((__unused__)),
gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major, tmpMinor;
gss_name_t krbInitiator = GSS_C_NO_NAME;
- gss_OID mech = GSS_C_NO_OID;
OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
+ /*
+ * If we're built with fast reauthentication support, it's valid
+ * for an initiator to send a GSS reauthentication token as its
+ * initial context token, causing us to short-circuit the state
+ * machine and process Kerberos GSS messages instead.
+ */
+
ctx->flags |= CTX_FLAG_KRB_REAUTH;
major = gssAcceptSecContext(minor,
if (major == GSS_S_COMPLETE) {
major = acceptReadyKrb(minor, ctx, cred,
krbInitiator, mech, timeRec);
+ if (major == GSS_S_COMPLETE) {
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
+ }
}
ctx->gssFlags = gssFlags;
projects / mech_eap.orig / blobdiff