#include "gssapiP_eap.h"
-#define EAP_MAX_METHODS 8
-
-#define EAP_TTLS_AUTH_PAP 1
-#define EAP_TTLS_AUTH_CHAP 2
-#define EAP_TTLS_AUTH_MSCHAP 4
-#define EAP_TTLS_AUTH_MSCHAPV2 8
-
-#if 1
-struct eap_user {
- struct {
- int vendor;
- u32 method;
- } methods[EAP_MAX_METHODS];
- u8 *password;
- size_t password_len;
- int password_hash; /* whether password is hashed with
- * nt_password_hash() */
- int phase2;
- int force_version;
- int ttls_auth; /* bitfield of
- * EAP_TTLS_AUTH_{PAP,CHAP,MSCHAP,MSCHAPV2} */
-};
-
-struct eap_eapol_interface {
- /* Lower layer to full authenticator variables */
- Boolean eapResp; /* shared with EAPOL Backend Authentication */
- struct wpabuf *eapRespData;
- Boolean portEnabled;
- int retransWhile;
- Boolean eapRestart; /* shared with EAPOL Authenticator PAE */
- int eapSRTT;
- int eapRTTVAR;
-
- /* Full authenticator to lower layer variables */
- Boolean eapReq; /* shared with EAPOL Backend Authentication */
- Boolean eapNoReq; /* shared with EAPOL Backend Authentication */
- Boolean eapSuccess;
- Boolean eapFail;
- Boolean eapTimeout;
- struct wpabuf *eapReqData;
- u8 *eapKeyData;
- size_t eapKeyDataLen;
- Boolean eapKeyAvailable; /* called keyAvailable in IEEE 802.1X-2004 */
-
- /* AAA interface to full authenticator variables */
- Boolean aaaEapReq;
- Boolean aaaEapNoReq;
- Boolean aaaSuccess;
- Boolean aaaFail;
- struct wpabuf *aaaEapReqData;
- u8 *aaaEapKeyData;
- size_t aaaEapKeyDataLen;
- Boolean aaaEapKeyAvailable;
- int aaaMethodTimeout;
-
- /* Full authenticator to AAA interface variables */
- Boolean aaaEapResp;
- struct wpabuf *aaaEapRespData;
- /* aaaIdentity -> eap_get_identity() */
- Boolean aaaTimeout;
-};
+#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_channel_bindings_t chanBindings,
+ gss_buffer_t outputToken);
+#endif
-#define eapol_callbacks SERVER_eapol_callbacks
+/*
+ * Mark a context as ready for cryptographic operations
+ */
+static OM_uint32
+acceptReadyEap(OM_uint32 *minor, gss_ctx_id_t ctx, gss_cred_id_t cred)
+{
+ OM_uint32 major, tmpMinor;
+ VALUE_PAIR *vp;
+ gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
-struct eapol_callbacks {
- int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
- int phase2, struct eap_user *user);
- const char * (*get_eap_req_id_text)(void *ctx, size_t *len);
-};
+ /* Cache encryption type derived from selected mechanism OID */
+ major = gssEapOidToEnctype(minor, ctx->mechanismUsed,
+ &ctx->encryptionType);
+ if (GSS_ERROR(major))
+ return major;
-#define eap_config SERVER_eap_config
-
-struct eap_config {
- void *ssl_ctx;
- void *msg_ctx;
- void *eap_sim_db_priv;
- Boolean backend_auth;
- int eap_server;
- u8 *pac_opaque_encr_key;
- u8 *eap_fast_a_id;
- size_t eap_fast_a_id_len;
- char *eap_fast_a_id_info;
- int eap_fast_prov;
- int pac_key_lifetime;
- int pac_key_refresh_time;
- int eap_sim_aka_result_ind;
- int tnc;
- struct wps_context *wps;
- const struct wpabuf *assoc_wps_ie;
- const u8 *peer_addr;
- int fragment_size;
-};
+ gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
-struct eap_sm * eap_server_sm_init(void *eapol_ctx,
- struct eapol_callbacks *eapol_cb,
- struct eap_config *eap_conf);
-void eap_server_sm_deinit(struct eap_sm *sm);
-int eap_server_sm_step(struct eap_sm *sm);
-void eap_sm_notify_cached(struct eap_sm *sm);
-void eap_sm_pending_cb(struct eap_sm *sm);
-int eap_sm_method_pending(struct eap_sm *sm);
-const u8 * eap_get_identity(struct eap_sm *sm, size_t *len);
-struct eap_eapol_interface * eap_get_interface(struct eap_sm *sm);
+ major = gssEapRadiusGetRawAvp(minor, ctx->acceptorCtx.vps,
+ PW_USER_NAME, 0, &vp);
+ if (major == GSS_S_COMPLETE) {
+ nameBuf.length = vp->length;
+ nameBuf.value = vp->vp_strvalue;
+ } else {
+ ctx->gssFlags |= GSS_C_ANON_FLAG;
+ }
-#include <eap_server/eap_i.h>
+ major = gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ &ctx->initiatorName);
+ if (GSS_ERROR(major))
+ return major;
-static OM_uint32
-initTls(OM_uint32 *minor,
- gss_ctx_id_t ctx)
-{
- struct tls_config tconf;
- struct tls_connection_params tparams;
+ major = gssEapRadiusGetRawAvp(minor, ctx->acceptorCtx.vps,
+ PW_MS_MPPE_SEND_KEY, VENDORPEC_MS, &vp);
+ if (GSS_ERROR(major)) {
+ *minor = GSSEAP_KEY_UNAVAILABLE;
+ return GSS_S_UNAVAILABLE;
+ }
- memset(&tconf, 0, sizeof(tconf));
- ctx->acceptorCtx.tlsContext = tls_init(&tconf);
- if (ctx->acceptorCtx.tlsContext == NULL)
- return GSS_S_FAILURE;
+ major = gssEapDeriveRfc3961Key(minor,
+ vp->vp_octets,
+ vp->length,
+ ctx->encryptionType,
+ &ctx->rfc3961Key);
+ if (GSS_ERROR(major))
+ return major;
- memset(&tparams, 0, sizeof(tparams));
- tparams.ca_cert = "ca.pem";
- tparams.client_cert = "server.pem";
- tparams.private_key = "server-key.pem";
+ major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
+ &ctx->checksumType);
+ if (GSS_ERROR(major))
+ return major;
- if (tls_global_set_params(ctx->acceptorCtx.tlsContext, &tparams)) {
- return GSS_S_FAILURE;
- }
+ 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;
- if (tls_global_set_verify(ctx->acceptorCtx.tlsContext, 0)) {
- return GSS_S_FAILURE;
- }
+ ctx->initiatorName->attrCtx = gssEapCreateAttrContext(cred, ctx);
return GSS_S_COMPLETE;
}
-static int
-serverGetEapUser(void *ctx,
- const unsigned char *identity,
- size_t identityLength,
- int phase2,
- struct eap_user *user)
+static OM_uint32
+eapGssSmAcceptIdentity(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)
{
- gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
- OM_uint32 major, minor;
- gss_buffer_desc buf;
+ OM_uint32 major;
+ union {
+ struct eap_hdr pdu;
+ unsigned char data[5];
+ } pkt;
+ gss_buffer_desc pktBuffer;
- memset(user, 0, sizeof(*user));
+ if (inputToken != GSS_C_NO_BUFFER && inputToken->length != 0)
+ return GSS_S_DEFECTIVE_TOKEN;
- buf.length = identityLength;
- buf.value = (void *)identity;
+ assert(ctx->acceptorName == GSS_C_NO_NAME);
- if (phase2 == 0) {
- user->methods[0].vendor = EAP_VENDOR_IETF;
- user->methods[0].method = EAP_TYPE_PEAP;
- return 0;
+ if (cred != GSS_C_NO_CREDENTIAL && cred->name != GSS_C_NO_NAME) {
+ major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
+ if (GSS_ERROR(major))
+ return major;
}
- major = gssEapImportName(&minor, &buf, GSS_C_NT_USER_NAME,
- &gssCtx->initiatorName);
- if (GSS_ERROR(major))
- return -1;
+ pkt.pdu.code = EAP_CODE_REQUEST;
+ pkt.pdu.identifier = 0;
+ pkt.pdu.length = htons(sizeof(pkt.data));
+ pkt.data[4] = EAP_TYPE_IDENTITY;
- /*
- * OK, obviously there is no real security here, this is simply
- * for testing the token exchange; this code will be completely
- * replaced with libradsec once that library is available.
- */
- user->methods[0].vendor = EAP_VENDOR_IETF;
- user->methods[0].method = EAP_TYPE_MSCHAPV2;
- user->password = (unsigned char *)strdup(" ");
- user->password_len = 1;
+ pktBuffer.length = sizeof(pkt.data);
+ pktBuffer.value = pkt.data;
- return 0;
-}
+ major = duplicateBuffer(minor, &pktBuffer, outputToken);
+ if (GSS_ERROR(major))
+ return major;
-static const char *
-serverGetEapReqIdText(void *ctx,
- size_t *len)
-{
- *len = 0;
- return NULL;
+ ctx->state = EAP_STATE_AUTHENTICATE;
+
+ return GSS_S_CONTINUE_NEEDED;
}
-#endif
static OM_uint32
-acceptReady(OM_uint32 *minor, gss_ctx_id_t ctx)
+setAcceptorIdentity(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ VALUE_PAIR **vps)
{
OM_uint32 major;
- krb5_context krbContext;
+ gss_buffer_desc nameBuf;
+ krb5_context krbContext = NULL;
+ krb5_principal krbPrinc;
+ struct rs_handle *rh = ctx->acceptorCtx.radHandle;
+
+ assert(rh != NULL);
+
+ /* Awaits further specification */
+ if (ctx->acceptorName == GSS_C_NO_NAME)
+ return GSS_S_COMPLETE;
GSSEAP_KRB_INIT(&krbContext);
- /* Cache encryption type derived from selected mechanism OID */
- major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
+ krbPrinc = ctx->acceptorName->krbPrincipal;
+ assert(krbPrinc != NULL);
+
+ if (krb5_princ_size(krbContext, krbPrinc) < 2)
+ return GSS_S_BAD_NAME;
+
+ /* Acceptor-Service-Name */
+ krbDataToGssBuffer(krb5_princ_component(krbContext, krbPrinc, 0), &nameBuf);
+
+ major = gssEapRadiusAddAvp(minor, vps,
+ PW_GSS_ACCEPTOR_SERVICE_NAME,
+ VENDORPEC_UKERNA,
+ &nameBuf);
+ if (GSS_ERROR(major))
+ return major;
+
+ /* Acceptor-Host-Name */
+ krbDataToGssBuffer(krb5_princ_component(krbContext, krbPrinc, 1), &nameBuf);
+
+ major = gssEapRadiusAddAvp(minor, vps,
+ PW_GSS_ACCEPTOR_HOST_NAME,
+ VENDORPEC_UKERNA,
+ &nameBuf);
if (GSS_ERROR(major))
return major;
- if (ctx->encryptionType != ENCTYPE_NULL &&
- ctx->acceptorCtx.eapPolInterface->eapKeyAvailable) {
- major = gssEapDeriveRFC3961Key(minor,
- ctx->acceptorCtx.eapPolInterface->eapKeyData,
- ctx->acceptorCtx.eapPolInterface->eapKeyDataLen,
- ctx->encryptionType,
- &ctx->rfc3961Key);
+ if (krb5_princ_size(krbContext, krbPrinc) > 2) {
+ /* Acceptor-Service-Specific */
+ krb5_principal_data ssiPrinc = *krbPrinc;
+ char *ssi;
+
+ krb5_princ_size(krbContext, &ssiPrinc) -= 2;
+ krb5_princ_name(krbContext, &ssiPrinc) += 2;
+
+ *minor = krb5_unparse_name_flags(krbContext, &ssiPrinc,
+ KRB5_PRINCIPAL_UNPARSE_NO_REALM, &ssi);
+ if (*minor != 0)
+ return GSS_S_FAILURE;
+
+ nameBuf.value = ssi;
+ nameBuf.length = strlen(ssi);
+
+ major = gssEapRadiusAddAvp(minor, vps,
+ PW_GSS_ACCEPTOR_SERVICE_SPECIFIC,
+ VENDORPEC_UKERNA,
+ &nameBuf);
+
+ if (GSS_ERROR(major)) {
+ krb5_free_unparsed_name(krbContext, ssi);
+ return major;
+ }
+ krb5_free_unparsed_name(krbContext, ssi);
+ }
+
+ krbDataToGssBuffer(krb5_princ_realm(krbContext, krbPrinc), &nameBuf);
+ if (nameBuf.length != 0) {
+ /* Acceptor-Realm-Name */
+ major = gssEapRadiusAddAvp(minor, vps,
+ PW_GSS_ACCEPTOR_REALM_NAME,
+ VENDORPEC_UKERNA,
+ &nameBuf);
if (GSS_ERROR(major))
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);
}
- sequenceInit(&ctx->seqState, ctx->recvSeq,
- ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
- ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
- TRUE);
+ return GSS_S_COMPLETE;
+}
+
+static OM_uint32
+createRadiusHandle(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx)
+{
+ struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
+ const char *configFile = RS_CONFIG_FILE;
+ const char *configStanza = "gss-eap";
+ struct rs_alloc_scheme ralloc;
+ struct rs_error *err;
+
+ assert(actx->radHandle == NULL);
+ assert(actx->radConn == NULL);
+
+ if (rs_context_create(&actx->radHandle, RS_DICT_FILE) != 0) {
+ *minor = GSSEAP_RADSEC_INIT_FAILURE;
+ return GSS_S_FAILURE;
+ }
+
+ if (cred != GSS_C_NO_CREDENTIAL) {
+ if (cred->radiusConfigFile != NULL)
+ configFile = cred->radiusConfigFile;
+ if (cred->radiusConfigStanza != NULL)
+ configStanza = cred->radiusConfigStanza;
+ }
+
+ ralloc.calloc = GSSEAP_CALLOC;
+ ralloc.malloc = GSSEAP_MALLOC;
+ ralloc.free = GSSEAP_FREE;
+ ralloc.realloc = GSSEAP_REALLOC;
+
+ rs_context_set_alloc_scheme(actx->radHandle, &ralloc);
+
+ if (rs_context_read_config(actx->radHandle, configFile) != 0) {
+ err = rs_err_ctx_pop(actx->radHandle);
+ goto fail;
+ }
+
+ if (rs_conn_create(actx->radHandle, &actx->radConn, configStanza) != 0) {
+ err = rs_err_conn_pop(actx->radConn);
+ goto fail;
+ }
+
+ /* XXX TODO rs_conn_select_server does not exist yet */
+#if 0
+ if (actx->radServer != NULL) {
+ if (rs_conn_select_server(actx->radConn, actx->radServer) != 0) {
+ err = rs_err_conn_pop(actx->radConn);
+ goto fail;
+ }
+ }
+#endif
+ *minor = 0;
return GSS_S_COMPLETE;
+
+fail:
+ return gssEapRadiusMapError(minor, err);
}
static OM_uint32
gss_channel_bindings_t chanBindings,
gss_buffer_t outputToken)
{
- OM_uint32 major;
- OM_uint32 tmpMinor, tmpMajor;
- int code;
- struct wpabuf respData;
- static struct eapol_callbacks cb = { serverGetEapUser, serverGetEapReqIdText };
- if (ctx->acceptorCtx.eap == NULL) {
- struct eap_config eapConfig;
-
- major = initTls(minor, ctx);
+ OM_uint32 major, tmpMinor;
+ struct rs_handle *rh;
+ struct rs_connection *rconn;
+ struct rs_request *request = NULL;
+ struct rs_packet *req = NULL, *resp = NULL;
+ struct radius_packet *frreq, *frresp;
+ int sendAcceptorIdentity = 0;
+
+ if (ctx->acceptorCtx.radHandle == NULL) {
+ /* May be NULL from an imported partial context */
+ major = createRadiusHandle(minor, cred, ctx);
if (GSS_ERROR(major))
goto cleanup;
- memset(&eapConfig, 0, sizeof(eapConfig));
- eapConfig.eap_server = 1;
- eapConfig.ssl_ctx = ctx->acceptorCtx.tlsContext;
+ sendAcceptorIdentity = 1;
+ }
- ctx->acceptorCtx.eap = eap_server_sm_init(ctx, &cb, &eapConfig);
- if (ctx->acceptorCtx.eap == NULL) {
- major = GSS_S_FAILURE;
- goto cleanup;
- }
+ rh = ctx->acceptorCtx.radHandle;
+ rconn = ctx->acceptorCtx.radConn;
- ctx->acceptorCtx.eapPolInterface = eap_get_interface(ctx->acceptorCtx.eap);
- ctx->acceptorCtx.eapPolInterface->portEnabled = TRUE;
- ctx->acceptorCtx.eapPolInterface->eapRestart = TRUE;
+ if (rs_packet_create_acc_request(rconn, &req, NULL, NULL) != 0) {
+ major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
+ goto cleanup;
}
+ frreq = rs_packet_frpkt(req);
- if (ctx->acceptorName == GSS_C_NO_NAME &&
- cred != GSS_C_NO_CREDENTIAL &&
- cred->name != GSS_C_NO_NAME) {
- major = gss_duplicate_name(minor, cred->name, &ctx->acceptorName);
+ if (sendAcceptorIdentity) {
+ major = setAcceptorIdentity(minor, ctx, &frreq->vps);
if (GSS_ERROR(major))
goto cleanup;
}
- wpabuf_set(&respData, inputToken->value, inputToken->length);
- ctx->acceptorCtx.eapPolInterface->eapRespData = &respData;
- ctx->acceptorCtx.eapPolInterface->eapResp = TRUE;
+ major = gssEapRadiusAddAvp(minor, &frreq->vps,
+ PW_EAP_MESSAGE, 0, inputToken);
+ if (GSS_ERROR(major))
+ goto cleanup;
- code = eap_server_sm_step(ctx->acceptorCtx.eap);
+ if (ctx->acceptorCtx.state.length != 0) {
+ major = gssEapRadiusAddAvp(minor, &frreq->vps, PW_STATE, 0,
+ &ctx->acceptorCtx.state);
+ if (GSS_ERROR(major))
+ goto cleanup;
- if (ctx->acceptorCtx.eapPolInterface->eapReq) {
- ctx->acceptorCtx.eapPolInterface->eapReq = 0;
- major = GSS_S_CONTINUE_NEEDED;
+ gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
}
- if (ctx->acceptorCtx.eapPolInterface->eapSuccess) {
- ctx->acceptorCtx.eapPolInterface->eapSuccess = 0;
- major = acceptReady(minor, ctx);
- if (GSS_ERROR(major))
- goto cleanup;
+ if (rs_request_create(rconn, &request) != 0 ||
+ rs_request_send(request, req, &resp) != 0) {
+ major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
+ goto cleanup;
+ }
- ctx->state = EAP_STATE_GSS_CHANNEL_BINDINGS;
+ assert(resp != NULL);
+
+ frresp = rs_packet_frpkt(resp);
+ switch (frresp->code) {
+ case PW_AUTHENTICATION_ACK:
+ case PW_ACCESS_CHALLENGE:
major = GSS_S_CONTINUE_NEEDED;
- } else if (ctx->acceptorCtx.eapPolInterface->eapFail) {
- ctx->acceptorCtx.eapPolInterface->eapFail = 0;
- major = GSS_S_FAILURE;
- } else if (code == 0) {
+ break;
+ case PW_AUTHENTICATION_REJECT:
+ major = GSS_S_DEFECTIVE_CREDENTIAL;
+ goto cleanup;
+ break;
+ default:
major = GSS_S_FAILURE;
+ goto cleanup;
+ break;
}
- if (ctx->acceptorCtx.eapPolInterface->eapReqData != NULL) {
- gss_buffer_desc buf;
+ major = gssEapRadiusGetAvp(minor, frresp->vps, PW_EAP_MESSAGE, 0,
+ outputToken, TRUE);
+ if ((major == GSS_S_UNAVAILABLE && frresp->code != PW_AUTHENTICATION_ACK) ||
+ GSS_ERROR(major))
+ goto cleanup;
+
+ if (frresp->code == PW_ACCESS_CHALLENGE) {
+ major = gssEapRadiusGetAvp(minor, frresp->vps, PW_STATE, 0,
+ &ctx->acceptorCtx.state, TRUE);
+ if (major != GSS_S_UNAVAILABLE && GSS_ERROR(major))
+ goto cleanup;
+ } else {
+ ctx->acceptorCtx.vps = frresp->vps;
+ frresp->vps = NULL;
- buf.length = wpabuf_len(ctx->acceptorCtx.eapPolInterface->eapReqData);
- buf.value = (void *)wpabuf_head(ctx->acceptorCtx.eapPolInterface->eapReqData);
+ rs_conn_destroy(ctx->acceptorCtx.radConn);
+ ctx->acceptorCtx.radConn = NULL;
- tmpMajor = duplicateBuffer(&tmpMinor, &buf, outputToken);
- if (GSS_ERROR(tmpMajor)) {
- major = tmpMajor;
- *minor = tmpMinor;
+ major = acceptReadyEap(minor, ctx, cred);
+ if (GSS_ERROR(major))
goto cleanup;
- }
+
+ ctx->state = EAP_STATE_EXTENSIONS_REQ;
}
+ major = GSS_S_CONTINUE_NEEDED;
+
cleanup:
- ctx->acceptorCtx.eapPolInterface->eapRespData = NULL;
+ rs_request_destroy(request);
return major;
}
static OM_uint32
-eapGssSmAcceptGssChannelBindings(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)
+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)
{
- OM_uint32 major, tmpMinor;
- gss_iov_buffer_desc iov[2];
+ OM_uint32 major;
+
+ major = gssEapVerifyExtensions(minor, cred, ctx, chanBindings, inputToken);
+ if (GSS_ERROR(major))
+ return major;
outputToken->length = 0;
outputToken->value = NULL;
- if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS) {
- ctx->state = EAP_STATE_ESTABLISHED;
- return GSS_S_COMPLETE;
- }
+ ctx->state = EAP_STATE_EXTENSIONS_RESP;
- if (inputToken->length < 14) {
- return GSS_S_DEFECTIVE_TOKEN;
- }
+ return GSS_S_CONTINUE_NEEDED;
+}
- iov[0].type = GSS_IOV_BUFFER_TYPE_DATA;
- iov[0].buffer.length = 0;
- iov[0].buffer.value = NULL;
+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)
+{
+ OM_uint32 major;
-#if 0
- major = gssEapEncodeGssChannelBindings(minor, chanBindings,
- &iov[0].buffer);
+ major = gssEapMakeExtensions(minor, cred, ctx, chanBindings, outputToken);
if (GSS_ERROR(major))
return major;
-#else
- if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS)
- iov[0].buffer = chanBindings->application_data;
-#endif
-
- iov[1].type = GSS_IOV_BUFFER_TYPE_HEADER;
- iov[1].buffer.length = 16;
- iov[1].buffer.value = (unsigned char *)inputToken->value - 2;
-
- assert(load_uint16_be(iov[1].buffer.value) == TOK_TYPE_GSS_CB);
-
- iov[2].type = GSS_IOV_BUFFER_TYPE_TRAILER;
- iov[2].buffer.length = inputToken->length - 14;
- iov[2].buffer.value = (unsigned char *)inputToken->value + 14;
-
- major = gssEapUnwrapOrVerifyMIC(minor, ctx, NULL, NULL,
- iov, 3, TOK_TYPE_GSS_CB);
- if (major == GSS_S_COMPLETE) {
- ctx->state = EAP_STATE_ESTABLISHED;
- }
-#if 0
- gss_release_buffer(&tmpMinor, &iov[0].buffer);
-#endif
+ ctx->state = EAP_STATE_ESTABLISHED;
- return major;
+ return GSS_S_COMPLETE;
}
static OM_uint32
gss_buffer_t outputToken)
{
/* Called with already established context */
- *minor = EINVAL;
+ *minor = GSSEAP_CONTEXT_ESTABLISHED;
return GSS_S_BAD_STATUS;
}
-static struct eap_gss_acceptor_sm {
+static struct gss_eap_acceptor_sm {
enum gss_eap_token_type inputTokenType;
enum gss_eap_token_type outputTokenType;
OM_uint32 (*processToken)(OM_uint32 *,
gss_channel_bindings_t,
gss_buffer_t);
} eapGssAcceptorSm[] = {
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, eapGssSmAcceptAuthenticate },
-#if 0
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, NULL },
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, NULL },
+ { 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 },
+#ifdef GSSEAP_ENABLE_REAUTH
+ { TOK_TYPE_GSS_REAUTH, TOK_TYPE_GSS_REAUTH, eapGssSmAcceptGssReauth },
#endif
- { TOK_TYPE_GSS_CB, TOK_TYPE_NONE, eapGssSmAcceptGssChannelBindings },
- { TOK_TYPE_NONE, TOK_TYPE_NONE, eapGssSmAcceptEstablished },
};
OM_uint32
OM_uint32 major;
OM_uint32 tmpMajor, tmpMinor;
gss_ctx_id_t ctx = *context_handle;
- struct eap_gss_acceptor_sm *sm = NULL;
- gss_buffer_desc innerInputToken, innerOutputToken;
+ 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;
- innerOutputToken.length = 0;
- innerOutputToken.value = NULL;
-
output_token->length = 0;
output_token->value = NULL;
- if (cred != GSS_C_NO_CREDENTIAL && !(cred->flags & CRED_FLAG_ACCEPT)) {
- return GSS_S_NO_CRED;
- }
-
if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
return GSS_S_DEFECTIVE_TOKEN;
}
if (GSS_ERROR(major))
return major;
+ initialContextToken = 1;
*context_handle = ctx;
}
GSSEAP_MUTEX_LOCK(&ctx->mutex);
+ /* Validate and lock credentials */
+ if (cred != GSS_C_NO_CREDENTIAL) {
+ GSSEAP_MUTEX_LOCK(&cred->mutex);
+
+ if ((cred->flags & CRED_FLAG_ACCEPT) == 0) {
+ *minor = GSSEAP_CRED_USAGE_MISMATCH;
+ major = GSS_S_NO_CRED;
+ goto cleanup;
+ }
+ }
+
sm = &eapGssAcceptorSm[ctx->state];
major = gssEapVerifyToken(minor, ctx, input_token,
- sm->inputTokenType, &innerInputToken);
+ &tokType, &innerInputToken);
if (GSS_ERROR(major))
goto cleanup;
- /* If credentials were provided, check they're usable with this mech */
if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
+ *minor = GSSEAP_WRONG_MECH;
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 = EAP_STATE_KRB_REAUTH_GSS;
+ } else
+#endif
+ if (tokType != sm->inputTokenType) {
+ *minor = GSSEAP_WRONG_TOK_ID;
+ major = GSS_S_DEFECTIVE_TOKEN;
+ goto cleanup;
+ }
+
do {
sm = &eapGssAcceptorSm[ctx->state];
if (!gssEapInternalizeOid(ctx->mechanismUsed, mech_type))
duplicateOid(&tmpMinor, ctx->mechanismUsed, mech_type);
}
- if (innerOutputToken.length != 0) {
+ if (innerOutputToken.value != NULL) {
tmpMajor = gssEapMakeToken(&tmpMinor, ctx, &innerOutputToken,
sm->outputTokenType, output_token);
if (GSS_ERROR(tmpMajor)) {
if (major == GSS_S_COMPLETE) {
if (src_name != NULL && ctx->initiatorName != GSS_C_NO_NAME) {
- major = gss_duplicate_name(&tmpMinor, ctx->initiatorName, src_name);
+ major = gssEapDuplicateName(&tmpMinor, ctx->initiatorName, src_name);
if (GSS_ERROR(major))
goto cleanup;
}
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);
cleanup:
+ if (cred != GSS_C_NO_CREDENTIAL)
+ GSSEAP_MUTEX_UNLOCK(&cred->mutex);
GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
if (GSS_ERROR(major))
return major;
}
+
+#ifdef GSSEAP_ENABLE_REAUTH
+static OM_uint32
+acceptReadyKrb(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_cred_id_t cred,
+ const gss_name_t initiator,
+ const gss_OID mech,
+ OM_uint32 timeRec)
+{
+ OM_uint32 major;
+
+ major = gssEapGlueToMechName(minor, initiator, &ctx->initiatorName);
+ if (GSS_ERROR(major))
+ return major;
+
+ if (cred != GSS_C_NO_CREDENTIAL && cred->name != GSS_C_NO_NAME) {
+ major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
+ if (GSS_ERROR(major))
+ return major;
+ }
+
+ major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
+ if (GSS_ERROR(major))
+ return major;
+
+ ctx->state = EAP_STATE_ESTABLISHED;
+
+ 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_channel_bindings_t chanBindings,
+ gss_buffer_t outputToken)
+{
+ OM_uint32 major, tmpMinor;
+ gss_cred_id_t krbCred = GSS_C_NO_CREDENTIAL;
+ gss_name_t krbInitiator = GSS_C_NO_NAME;
+ gss_OID mech = GSS_C_NO_OID;
+ OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
+
+ ctx->flags |= CTX_FLAG_KRB_REAUTH_GSS;
+
+ if (cred != GSS_C_NO_CREDENTIAL)
+ krbCred = cred->krbCred;
+
+ major = gssAcceptSecContext(minor,
+ &ctx->kerberosCtx,
+ krbCred,
+ inputToken,
+ chanBindings,
+ &krbInitiator,
+ &mech,
+ outputToken,
+ &gssFlags,
+ &timeRec,
+ NULL);
+ if (major == GSS_S_COMPLETE) {
+ major = acceptReadyKrb(minor, ctx, cred,
+ krbInitiator, mech, timeRec);
+ }
+
+ ctx->gssFlags = gssFlags;
+
+ gssReleaseName(&tmpMinor, &krbInitiator);
+
+ return major;
+}
+#endif /* GSSEAP_ENABLE_REAUTH */
projects / mech_eap.git / blobdiff