/*
- * 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.
*/
+/*
+ * Message protection services: unwrap.
+ */
+
#include "gssapiP_eap.h"
+OM_uint32
+gss_unwrap(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_buffer_t input_message_buffer,
+ gss_buffer_t output_message_buffer,
+ int *conf_state,
+ gss_qop_t *qop_state)
+{
+ OM_uint32 major, tmpMinor;
+ gss_iov_buffer_desc iov[2];
+
+ if (ctx == GSS_C_NO_CONTEXT) {
+ *minor = EINVAL;
+ return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT;
+ }
+
+ *minor = 0;
+
+ GSSEAP_MUTEX_LOCK(&ctx->mutex);
+
+ if (!CTX_IS_ESTABLISHED(ctx)) {
+ major = GSS_S_NO_CONTEXT;
+ *minor = GSSEAP_CONTEXT_INCOMPLETE;
+ goto cleanup;
+ }
+
+ iov[0].type = GSS_IOV_BUFFER_TYPE_STREAM;
+ iov[0].buffer = *input_message_buffer;
+
+ iov[1].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE;
+ iov[1].buffer.value = NULL;
+ iov[1].buffer.length = 0;
+
+ major = gssEapUnwrapOrVerifyMIC(minor, ctx, conf_state, qop_state,
+ iov, 2, TOK_TYPE_WRAP);
+ if (major == GSS_S_COMPLETE) {
+ *output_message_buffer = iov[1].buffer;
+ } else {
+ if (iov[1].type & GSS_IOV_BUFFER_FLAG_ALLOCATED)
+ gss_release_buffer(&tmpMinor, &iov[1].buffer);
+ }
+
+cleanup:
+ GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
+
+ return major;
+}