/*
- * 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.
*/
+/*
+ * Utility routines for context handles.
+ */
+
#include "gssapiP_eap.h"
OM_uint32
return GSS_S_FAILURE;
}
- ctx->state = EAP_STATE_AUTHENTICATE;
+ ctx->state = GSSEAP_STATE_INITIAL;
+
+ /*
+ * Integrity, confidentiality, sequencing and replay detection are
+ * always available. Regardless of what flags are requested in
+ * GSS_Init_sec_context, implementations MUST set the flag corresponding
+ * to these services in the output of GSS_Init_sec_context and
+ * GSS_Accept_sec_context.
+ */
+ ctx->gssFlags = GSS_C_TRANS_FLAG | /* exporting contexts */
+ GSS_C_INTEG_FLAG | /* integrity */
+ GSS_C_CONF_FLAG | /* confidentiality */
+ GSS_C_SEQUENCE_FLAG | /* sequencing */
+ GSS_C_REPLAY_FLAG; /* replay detection */
*pCtx = ctx;
}
static void
-releaseInitiatorContext(struct eap_gss_initiator_ctx *ctx)
+releaseInitiatorContext(struct gss_eap_initiator_ctx *ctx)
{
eap_peer_sm_deinit(ctx->eap);
- wpabuf_free(ctx->eapReqData);
}
static void
-releaseAcceptorContext(struct eap_gss_acceptor_ctx *ctx)
+releaseAcceptorContext(struct gss_eap_acceptor_ctx *ctx)
{
+ OM_uint32 tmpMinor;
+
+ if (ctx->radConn != NULL)
+ rs_conn_destroy(ctx->radConn);
+ if (ctx->radContext != NULL)
+ rs_context_destroy(ctx->radContext);
+ if (ctx->radServer != NULL)
+ GSSEAP_FREE(ctx->radServer);
+ gss_release_buffer(&tmpMinor, &ctx->state);
+ if (ctx->vps != NULL)
+ gssEapRadiusFreeAvps(&tmpMinor, &ctx->vps);
}
OM_uint32
gssEapReleaseContext(OM_uint32 *minor,
gss_ctx_id_t *pCtx)
{
- OM_uint32 major, tmpMinor;
+ OM_uint32 tmpMinor;
gss_ctx_id_t ctx = *pCtx;
krb5_context krbContext = NULL;
gssEapKerberosInit(&tmpMinor, &krbContext);
+#ifdef GSSEAP_ENABLE_REAUTH
+ if (ctx->flags & CTX_FLAG_KRB_REAUTH) {
+ gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
+ } else
+#endif
if (CTX_IS_INITIATOR(ctx)) {
releaseInitiatorContext(&ctx->initiatorCtx);
} else {
krb5_free_keyblock_contents(krbContext, &ctx->rfc3961Key);
gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
gssEapReleaseName(&tmpMinor, &ctx->acceptorName);
- gss_release_oid(&tmpMinor, &ctx->mechanismUsed);
- sequenceFree(ctx->seqState);
+ gssEapReleaseOid(&tmpMinor, &ctx->mechanismUsed);
+ sequenceFree(&tmpMinor, &ctx->seqState);
+ gssEapReleaseCred(&tmpMinor, &ctx->defaultCred);
+ gss_release_buffer(&tmpMinor, &ctx->conversation);
GSSEAP_MUTEX_DESTROY(&ctx->mutex);
*minor = 0;
return GSS_S_COMPLETE;
}
+
+static OM_uint32
+recordTokens(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_buffer_t tokens,
+ size_t tokensCount)
+{
+ unsigned char *buf;
+ size_t i, size, offset;
+
+ size = ctx->conversation.length;
+
+ for (i = 0; i < tokensCount; i++)
+ size += tokens[i].length;
+
+ buf = GSSEAP_REALLOC(ctx->conversation.value, size);
+ if (buf == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+
+ offset = ctx->conversation.length;
+
+ ctx->conversation.length = size;
+ ctx->conversation.value = buf;
+
+ for (i = 0; i < tokensCount; i++) {
+ memcpy(buf + offset, tokens[i].value, tokens[i].length);
+ offset += tokens[i].length;
+ }
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapRecordContextTokenHeader(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ enum gss_eap_token_type tokType)
+{
+ unsigned char wireOidHeader[2], wireTokType[2];
+ gss_buffer_desc buffers[3];
+
+ assert(ctx->mechanismUsed != GSS_C_NO_OID);
+
+ wireOidHeader[0] = 0x06;
+ wireOidHeader[1] = ctx->mechanismUsed->length;
+ buffers[0].length = sizeof(wireOidHeader);
+ buffers[0].value = wireOidHeader;
+
+ buffers[1].length = ctx->mechanismUsed->length;
+ buffers[1].value = ctx->mechanismUsed->elements;
+
+ store_uint16_be(tokType, wireTokType);
+ buffers[2].length = sizeof(wireTokType);
+ buffers[2].value = wireTokType;
+
+ return recordTokens(minor, ctx, buffers, sizeof(buffers)/sizeof(buffers[0]));
+}
+
+OM_uint32
+gssEapRecordInnerContextToken(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_buffer_t innerToken,
+ OM_uint32 itokType)
+{
+ gss_buffer_desc buffers[3];
+ unsigned char wireItokType[4], wireLength[4];
+
+ assert(innerToken != GSS_C_NO_BUFFER);
+
+ store_uint32_be(itokType, wireItokType);
+ buffers[0].length = sizeof(wireItokType);
+ buffers[0].value = wireItokType;
+
+ store_uint32_be(innerToken->length, wireLength);
+ buffers[1].length = sizeof(wireLength);
+ buffers[1].value = wireLength;
+
+ buffers[2] = *innerToken;
+
+ return recordTokens(minor, ctx, buffers, sizeof(buffers)/sizeof(buffers[0]));
+}
+
+OM_uint32
+gssEapVerifyContextToken(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ const gss_buffer_t inputToken,
+ enum gss_eap_token_type tokType,
+ gss_buffer_t innerInputToken)
+{
+ OM_uint32 major;
+ size_t bodySize;
+ unsigned char *p = (unsigned char *)inputToken->value;
+ gss_OID_desc oidBuf;
+ gss_OID oid;
+ enum gss_eap_token_type actualTokType;
+ gss_buffer_desc tokenBuf;
+
+ if (ctx->mechanismUsed != GSS_C_NO_OID) {
+ oid = ctx->mechanismUsed;
+ } else {
+ oidBuf.elements = NULL;
+ oidBuf.length = 0;
+ oid = &oidBuf;
+ }
+
+ major = verifyTokenHeader(minor, oid, &bodySize, &p,
+ inputToken->length, &actualTokType);
+ if (GSS_ERROR(major))
+ return major;
+
+ if (actualTokType != tokType) {
+ *minor = GSSEAP_WRONG_TOK_ID;
+ return GSS_S_DEFECTIVE_TOKEN;
+ }
+
+ if (ctx->mechanismUsed == GSS_C_NO_OID) {
+ if (!gssEapIsConcreteMechanismOid(oid)) {
+ *minor = GSSEAP_WRONG_MECH;
+ return GSS_S_BAD_MECH;
+ }
+
+ if (!gssEapInternalizeOid(oid, &ctx->mechanismUsed)) {
+ major = duplicateOid(minor, oid, &ctx->mechanismUsed);
+ if (GSS_ERROR(major))
+ return major;
+ }
+ }
+
+ innerInputToken->length = bodySize;
+ innerInputToken->value = p;
+
+ /*
+ * Add OID, tokenType, body to conversation; variable length
+ * header omitted. A better API to verifyTokenHeader would
+ * avoid this ugly pointer arithmetic. XXX FIXME
+ */
+ tokenBuf.value = p - (2 + oid->length + 2);
+ tokenBuf.length = 2 + oid->length + 2 + bodySize;
+
+ major = recordTokens(minor, ctx, &tokenBuf, 1);
+ if (GSS_ERROR(major))
+ return major;
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapContextTime(OM_uint32 *minor,
+ gss_ctx_id_t context_handle,
+ OM_uint32 *time_rec)
+{
+ if (context_handle->expiryTime == 0) {
+ *time_rec = GSS_C_INDEFINITE;
+ } else {
+ time_t now, lifetime;
+
+ time(&now);
+ lifetime = context_handle->expiryTime - now;
+ if (lifetime <= 0) {
+ *time_rec = 0;
+ return GSS_S_CONTEXT_EXPIRED;
+ }
+ *time_rec = lifetime;
+ }
+
+ return GSS_S_COMPLETE;
+}
projects / moonshot.git / blobdiff