/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#include <axis2_handler_desc.h>
#include <axutil_qname.h>
#include <axis2_svc.h>
#include <axiom_soap.h>
#include <rampart_util.h>
#include <axis2_endpoint_ref.h>
#include <axutil_property.h>
#include <rampart_constants.h>
#include <rampart_username_token.h>
#include <rampart_handler_util.h>
#include <rampart_timestamp_token.h>
#include <rampart_encryption.h>
#include <rampart_sec_header_builder.h>
#include <rp_policy_creator.h>
#include <rp_secpolicy_builder.h>
#include <rampart_context.h>
#include <rampart_engine.h>

/*********************** Function headers *********************************/

AXIS2_EXTERN axis2_status_t AXIS2_CALL
rampart_out_handler_invoke(struct axis2_handler *handler,
        const axutil_env_t * env,
        struct axis2_msg_ctx *msg_ctx);


/**********************end of header functions ****************************/

AXIS2_EXTERN axis2_handler_t *AXIS2_CALL
rampart_out_handler_create(const axutil_env_t *env,  axutil_string_t *name)
{
    axis2_handler_t *handler = NULL;

    AXIS2_ENV_CHECK(env, NULL);

    handler = axis2_handler_create(env);
    if (!handler)
    {
        return NULL;
    }

    /* set the base struct's invoke op */
#if 0
    if (handler->ops)
        handler->ops->invoke = rampart_out_handler_invoke;
#else
    axis2_handler_set_invoke(handler, env, rampart_out_handler_invoke);
#endif
    return handler;
}

axis2_status_t AXIS2_CALL
rampart_out_handler_invoke(struct axis2_handler * handler,
        const axutil_env_t * env, axis2_msg_ctx_t * msg_ctx)
{
    axiom_soap_envelope_t *soap_envelope = NULL;
    axiom_soap_header_t *soap_header = NULL;
    axiom_node_t *soap_header_node = NULL;
    axiom_element_t *soap_header_ele = NULL;
    axis2_status_t status = AXIS2_FAILURE;
    rampart_context_t *rampart_context = NULL;
    axis2_bool_t serverside = AXIS2_FALSE;
    
    AXIS2_ENV_CHECK(env, AXIS2_FAILURE);
    AXIS2_PARAM_CHECK(env->error, msg_ctx, AXIS2_FAILURE);

    serverside = axis2_msg_ctx_get_server_side(msg_ctx,env);
    soap_envelope =  axis2_msg_ctx_get_soap_envelope(msg_ctx, env);
    if (!soap_envelope)
    {
        AXIS2_LOG_INFO(env->log, "[rampart][rampart_out_handler] No SOAP envelope found. ERROR");
        return AXIS2_FAILURE;
    }

    /*We are checking for the soap header element*/
    soap_header  = axiom_soap_envelope_get_header(soap_envelope, env);

    if (!soap_header)
    {
        AXIS2_LOG_INFO(env->log, "[rampart][rampart_out_handler] No SOAP header found. ERROR");
        /*No SOAP header, so no point of proceeding*/
        return AXIS2_SUCCESS;
    }

    /*if the soap header is available then add the security header*/
    if (soap_header)
    {
        soap_header_node = axiom_soap_header_get_base_node(soap_header, env);
        if(!soap_header_node)
        {
            AXIS2_LOG_INFO(env->log, "[rampart][rampart_out_handler] Cannot Create the header node");
            /*No SOAP header, so no point of proceeding*/
            return AXIS2_SUCCESS;
        }
        soap_header_ele = (axiom_element_t *)axiom_node_get_data_element(soap_header_node,env);

        /*since rampart out_handler is a global handler we should
        first check whether the rampart module is engaged.If not we
        should not process the message and return success.*/

        /*This method is implemented in rampart_handler utils.*/
        if(!rampart_is_rampart_engaged(env,msg_ctx))
        {
            AXIS2_LOG_INFO(env->log, "[rampart][rampart_out_handler] Not intended for processing in Rampart");            
            return AXIS2_SUCCESS;
        }

        rampart_context = rampart_engine_init(env,msg_ctx,AXIS2_FALSE);
        if(!rampart_context)
            return AXIS2_FAILURE;

        /*We call the security header builder*/
        status = rampart_shb_build_message(env, msg_ctx, rampart_context, soap_envelope);
        if(AXIS2_FAILURE == status){
                AXIS2_LOG_INFO(env->log,
                    "[rampart][rampart_out_handler] Security header building failed ERROR");
                rampart_engine_shutdown(env,rampart_context);
                return AXIS2_FAILURE;
        }
        /*status = rampart_engine_shutdown(env,rampart_context);*/
    }
    return status;
}