*/
#include "gssapiP_eap.h"
+#include "radius/radius.h"
+#include "util_radius.h"
+#include "utils/radius_utils.h"
static OM_uint32
policyVariableToFlag(enum eapol_bool_var variable)
extern int wpa_debug_level;
#endif
+#define CHBIND_SERVICE_NAME_FLAG 0x01
+#define CHBIND_HOST_NAME_FLAG 0x02
+#define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
+#define CHBIND_REALM_NAME_FLAG 0x08
+
+extern void TestFunc();
+
+static OM_uint32
+peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
+{
+ struct wpabuf *buf = NULL;
+ unsigned int chbindReqFlags = 0;
+ krb5_principal princ = NULL;
+ gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
+ OM_uint32 major = GSS_S_COMPLETE;
+ krb5_context krbContext = NULL;
+
+ /* XXX is this check redundant? */
+ if (ctx->acceptorName == GSS_C_NO_NAME) {
+ major = GSS_S_BAD_NAME;
+ *minor = GSSEAP_NO_ACCEPTOR_NAME;
+ goto cleanup;
+ }
+
+ princ = ctx->acceptorName->krbPrincipal;
+
+ krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
+ if (nameBuf.length > 0) {
+ major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
+ 0, &nameBuf);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
+ }
+
+ krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
+ if (nameBuf.length > 0) {
+ major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
+ 0, &nameBuf);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
+ }
+
+ GSSEAP_KRB_INIT(&krbContext);
+
+ *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
+ if (*minor != 0)
+ goto cleanup;
+
+ if (nameBuf.length > 0) {
+ major = gssEapRadiusAddAttr(minor, &buf,
+ PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
+ 0, &nameBuf);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
+ }
+
+ krbFreeUnparsedName(krbContext, &nameBuf);
+ krbPrincRealmToGssBuffer(princ, &nameBuf);
+
+ if (nameBuf.length > 0) {
+ major = gssEapRadiusAddAttr(minor, &buf,
+ PW_GSS_ACCEPTOR_REALM_NAME,
+ 0, &nameBuf);
+ chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
+ }
+
+ if (chbindReqFlags == 0) {
+ major = GSS_S_BAD_NAME;
+ *minor = GSSEAP_BAD_ACCEPTOR_NAME;
+ goto cleanup;
+ }
+
+ ctx->initiatorCtx.chbindData = buf;
+ ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
+
+ buf = NULL;
+
+ major = GSS_S_COMPLETE;
+ *minor = 0;
+
+cleanup:
+ krbFreeUnparsedName(krbContext, &nameBuf);
+ wpabuf_free(buf);
+
+ return major;
+}
+
+static void
+peerProcessChbindResponse(void *context, int code, int nsid,
+ u8 *data, size_t len)
+{
+ radius_parser msg;
+ gss_ctx_id_t ctx = (gss_ctx_id_t )context;
+ void *vsadata;
+ u8 type;
+ u32 vendor_id;
+ u32 chbindRetFlags = 0;
+ size_t vsadata_len;
+
+ if (nsid != CHBIND_NSID_RADIUS)
+ return;
+
+ msg = radius_parser_start(data, len);
+ if (msg == NULL)
+ return;
+
+ while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
+ &vsadata_len) == 0) {
+ switch (type) {
+ case PW_GSS_ACCEPTOR_SERVICE_NAME:
+ chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
+ break;
+ case PW_GSS_ACCEPTOR_HOST_NAME:
+ chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
+ break;
+ case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
+ chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
+ break;
+ case PW_GSS_ACCEPTOR_REALM_NAME:
+ chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
+ break;
+ }
+ }
+
+ radius_parser_finish(msg);
+
+ if (code == CHBIND_CODE_SUCCESS &&
+ ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
+ ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
+ ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
+ } /* else log failures? */
+}
+
static OM_uint32
peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
{
eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
+ /* eap channel binding */
+ if (ctx->initiatorCtx.chbindData != NULL) {
+ struct eap_peer_chbind_config *chbind_config =
+ (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
+ if (chbind_config == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+
+ chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
+ chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
+ chbind_config->nsid = CHBIND_NSID_RADIUS;
+ chbind_config->response_cb = &peerProcessChbindResponse;
+ chbind_config->ctx = ctx;
+ eapPeerConfig->chbind_config = chbind_config;
+ eapPeerConfig->chbind_config_len = 1;
+ } else {
+ eapPeerConfig->chbind_config = NULL;
+ eapPeerConfig->chbind_config_len = 0;
+ }
+
*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)
+initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
{
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 GSS_S_FAILURE;
}
+ /*
+ * Generate channel binding data
+ */
+ if (ctx->initiatorCtx.chbindData == NULL) {
+ major = peerInitEapChannelBinding(minor, ctx);
+ if (GSS_ERROR(major))
+ return major;
+ }
+
return GSS_S_CONTINUE_NEEDED;
}
resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
} else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
- major = initReady(minor, ctx, reqFlags);
+ major = initReady(minor, ctx);
if (GSS_ERROR(major))
goto cleanup;
goto cleanup;
}
}
+
if (ret_flags != NULL)
*ret_flags = ctx->gssFlags;
+
if (time_rec != NULL)
gssEapContextTime(&tmpMinor, ctx, time_rec);
projects / mech_eap.git / blobdiff