#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 inputToken,
gss_buffer_t outputToken);
#endif
ctx->gssFlags |= GSS_C_ANON_FLAG;
}
- major = gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ major = gssEapImportName(minor, &nameBuf,
+ (ctx->gssFlags & GSS_C_ANON_FLAG) ?
+ GSS_C_NT_ANONYMOUS : GSS_C_NT_USER_NAME,
&ctx->initiatorName);
if (GSS_ERROR(major))
return major;
*/
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)
{
OM_uint32 major;
- union {
- struct eap_hdr pdu;
- unsigned char data[5];
- } pkt;
+ 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;
return major;
}
- pkt.pdu.code = EAP_CODE_REQUEST;
- pkt.pdu.identifier = 0;
- pkt.pdu.length = htons(sizeof(pkt.data));
- pkt.data[4] = EAP_TYPE_IDENTITY;
+ reqData = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, 0,
+ EAP_CODE_REQUEST, 0);
+ if (reqData == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
+ }
- pktBuffer.length = sizeof(pkt.data);
- pktBuffer.value = pkt.data;
+ pktBuffer.length = wpabuf_len(reqData);
+ pktBuffer.value = (void *)wpabuf_head(reqData);
major = duplicateBuffer(minor, &pktBuffer, outputToken);
if (GSS_ERROR(major))
return major;
- ctx->state = GSSEAP_STATE_AUTHENTICATE;
+ wpabuf_free(reqData);
+
+ *minor = 0;
+ return GSS_S_COMPLETE; /* advance state */
+}
+
+/*
+ * Returns TRUE if the input token contains an EAP identity response.
+ */
+static int
+isIdentityResponseP(gss_buffer_t inputToken)
+{
+ struct wpabuf respData;
+
+ wpabuf_set(&respData, inputToken->value, inputToken->length);
+
+ return (eap_get_type(&respData) == EAP_TYPE_IDENTITY);
+}
+
+/*
+ * Save the asserted initiator identity from the EAP identity response.
+ */
+static OM_uint32
+importInitiatorIdentity(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_buffer_t inputToken)
+{
+ OM_uint32 tmpMinor;
+ struct wpabuf respData;
+ const unsigned char *pos;
+ size_t len;
+ gss_buffer_desc nameBuf;
+
+ wpabuf_set(&respData, inputToken->value, inputToken->length);
+
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+ &respData, &len);
+ if (pos == NULL) {
+ *minor = GSSEAP_PEER_BAD_MESSAGE;
+ return GSS_S_DEFECTIVE_TOKEN;
+ }
+
+ nameBuf.value = (void *)pos;
+ nameBuf.length = len;
+
+ gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
+
+ return gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ &ctx->initiatorName);
+}
+
+/*
+ * Pass the asserted initiator identity to the authentication server.
+ */
+static OM_uint32
+setInitiatorIdentity(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ VALUE_PAIR **vps)
+{
+ OM_uint32 major, tmpMinor;
+ gss_buffer_desc nameBuf;
+
+ /*
+ * We should have got an EAP identity response, but if we didn't, then
+ * we will just avoid sending User-Name. Note that radsecproxy requires
+ * User-Name to be sent on every request (presumably so it can remain
+ * stateless).
+ */
+ if (ctx->initiatorName != GSS_C_NO_NAME) {
+ major = gssEapDisplayName(minor, ctx->initiatorName, &nameBuf, NULL);
+ if (GSS_ERROR(major))
+ return major;
+
+ major = gssEapRadiusAddAvp(minor, vps, PW_USER_NAME, 0, &nameBuf);
+ if (GSS_ERROR(major))
+ return major;
+
+ gss_release_buffer(&tmpMinor, &nameBuf);
+ }
*minor = 0;
- return GSS_S_CONTINUE_NEEDED;
+ return GSS_S_COMPLETE;
}
/*
*/
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 inputToken,
gss_buffer_t outputToken)
{
OM_uint32 major, tmpMinor;
struct rs_request *request = NULL;
struct rs_packet *req = NULL, *resp = NULL;
struct radius_packet *frreq, *frresp;
- int sendAcceptorIdentity = 0;
if (ctx->acceptorCtx.radContext == NULL) {
/* May be NULL from an imported partial context */
major = createRadiusHandle(minor, cred, ctx);
if (GSS_ERROR(major))
goto cleanup;
+ }
- sendAcceptorIdentity = 1;
+ if (isIdentityResponseP(inputToken)) {
+ major = importInitiatorIdentity(minor, ctx, inputToken);
+ if (GSS_ERROR(major))
+ return major;
}
rconn = ctx->acceptorCtx.radConn;
}
frreq = rs_packet_frpkt(req);
- if (sendAcceptorIdentity) {
- major = setAcceptorIdentity(minor, ctx, &frreq->vps);
- if (GSS_ERROR(major))
- goto cleanup;
- }
+ major = setInitiatorIdentity(minor, ctx, &frreq->vps);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = setAcceptorIdentity(minor, ctx, &frreq->vps);
+ if (GSS_ERROR(major))
+ goto cleanup;
major = gssEapRadiusAddAvp(minor, &frreq->vps,
PW_EAP_MESSAGE, 0, inputToken);
}
rs_request_add_reqpkt(request, req);
+ req = NULL;
if (rs_request_send(request, &resp) != 0) {
major = gssEapRadiusMapError(minor, rs_err_conn_pop(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;
&ctx->acceptorCtx.state, TRUE);
if (GSS_ERROR(major) && *minor != GSSEAP_NO_SUCH_ATTR)
goto cleanup;
+
+ major = GSS_S_CONTINUE_NEEDED;
} else {
ctx->acceptorCtx.vps = frresp->vps;
frresp->vps = NULL;
if (GSS_ERROR(major))
goto cleanup;
- ctx->state = GSSEAP_STATE_EXTENSIONS_REQ;
+ major = GSS_S_COMPLETE; /* advance state */
}
- *minor = 0;
- major = GSS_S_CONTINUE_NEEDED;
-
cleanup:
- rs_request_destroy(request);
+ if (request != NULL)
+ rs_request_destroy(request);
+ if (req != NULL)
+ rs_packet_destroy(req);
return major;
}
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 major;
+ OM_uint32 major, tmpMinor;
+ gss_iov_buffer_desc iov[2];
+
+ 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 = gssEapVerifyExtensions(minor, cred, ctx, chanBindings, 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; /* process additional extensions */
+ *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 major;
- major = gssEapMakeExtensions(minor, cred, ctx, chanBindings, outputToken);
+ /*
+ * If we're built with fast reauthentication enabled, then
+ * fabricate a ticket from the initiator to ourselves.
+ */
+ major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
if (GSS_ERROR(major))
return major;
- ctx->state = GSSEAP_STATE_ESTABLISHED;
-
*minor = 0;
- return GSS_S_COMPLETE;
-}
-
-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)
-{
- /* Called with already established context */
- *minor = GSSEAP_CONTEXT_ESTABLISHED;
- return GSS_S_BAD_STATUS;
+ return GSS_S_CONTINUE_NEEDED; /* process additional extensions */
}
+#endif
static OM_uint32
-makeErrorToken(OM_uint32 *minor,
- OM_uint32 majorStatus,
- OM_uint32 minorStatus,
- gss_buffer_t outputToken)
+eapGssSmAcceptNegoExtFinished(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)
{
- 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;
- }
-
- minorStatus -= ERROR_TABLE_BASE_eapg;
-
- store_uint32_be(majorStatus, &errorData[0]);
- store_uint32_be(minorStatus, &errorData[4]);
-
- errorBuffer.length = sizeof(errorData);
- errorBuffer.value = errorData;
-
- return duplicateBuffer(minor, &errorBuffer, outputToken);
+ *minor = 0;
+ return GSS_S_COMPLETE; /* advance state */
}
-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_ENABLE_REAUTH
- { TOK_TYPE_GSS_REAUTH, TOK_TYPE_GSS_REAUTH, eapGssSmAcceptGssReauth },
+ {
+ ITOK_TYPE_REAUTH_REQ,
+ ITOK_TYPE_REAUTH_RESP,
+ GSSEAP_STATE_INITIAL,
+ 0, /* critical */
+ 0, /* required */
+ eapGssSmAcceptGssReauth,
+ },
#endif
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_EAP_REQ,
+ GSSEAP_STATE_INITIAL,
+ 1, /* critical */
+ 1, /* required */
+ eapGssSmAcceptIdentity,
+ },
+ {
+ ITOK_TYPE_EAP_RESP,
+ ITOK_TYPE_EAP_REQ,
+ GSSEAP_STATE_AUTHENTICATE,
+ 1, /* critical */
+ 1, /* required */
+ eapGssSmAcceptAuthenticate
+ },
+ {
+ ITOK_TYPE_GSS_CHANNEL_BINDINGS,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_NEGO_EXT,
+ 1, /* critical */
+ 1, /* required */
+ eapGssSmAcceptGssChannelBindings,
+ },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_REAUTH_CREDS,
+ GSSEAP_STATE_NEGO_EXT,
+ 0, /* critical */
+ 0, /* required */
+ eapGssSmAcceptReauthCreds,
+ },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_NEGO_EXT,
+ 1, /* critical */
+ 1, /* required */
+ eapGssSmAcceptNegoExtFinished
+ },
};
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;
output_token->length = 0;
output_token->value = NULL;
+ if (src_name != NULL)
+ *src_name = GSS_C_NO_NAME;
+
if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
*minor = GSSEAP_TOK_TRUNC;
return GSS_S_DEFECTIVE_TOKEN;
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;
+ ctx->state = GSSEAP_STATE_NEGO_EXT; /* skip */
*minor = 0;
- return GSS_S_COMPLETE;
+ return GSS_S_COMPLETE; /* advance state */
}
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 inputToken,
gss_buffer_t outputToken)
{
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,
projects / mech_eap.orig / blobdiff