c/src/server/apache2/mod_axis2.c

/* -*- C++ -*- */

/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "SOAP" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 *
 *
 *
 * @author Sanjaya Singharage (sanjayas@jkcsworld.com)
 *
 */
#ifdef WIN32
#else
#define PATH_MAX 4096
#endif

#include <apache2_0/httpd.h>
#include <apache2_0/http_config.h>
#include <apache2_0/http_core.h>
#include <apache2_0/http_protocol.h>
#include <apache2_0/http_log.h>
#include <apache2_0/ap_compat.h>
#include <apache2_0/apr_tables.h>
#include <axis/common/Packet.h>
#include <malloc.h>

#define AXIS_URI_EXTENSION "/axis/"

/*
The apache 2.0 module for Axis. THIS IS NOT COMPLETED
*/

extern int process_request(Ax_soapstream* str);
/*extern int process(soapstream *);*/
extern unsigned char chEBuf[1024];

#define SIZEOFMODULEBUFFER 100

char g_buffer[SIZEOFMODULEBUFFER];

/*Should dispatch the headers from within this method*/
int send_transport_information(Ax_soapstream* hdr)
{
      ap_send_http_header((request_rec*)hdr->str.op_stream);
	  return 0;
}

/*Call initialize_module() [of Packet.h] from within this method*/
void module_init(server_rec *svr_rec, apr_pool_t* p)
{
	initialize_module(1);
}

int send_response_bytes(char* res, void* opstream)
{
	ap_rputs(res, (request_rec*)opstream);
	return 0;
}

/*Call initialize_process() [of Packet.h] from within this method*/
void  axis_Init(server_rec *svr_rec, apr_pool_t* p)
{}
/*Call finalize_process() [of Packet.h] from within this method*/
void axis_Fini(server_rec *svr_rec, apr_pool_t* p)
{}

/**
 * This function is called by the Axis Engine whenever it needs to get bytes from the 
 * transport layer.
 */
int get_request_bytes(const char** req, int* retsize, const void* ipstream)
{
	int len_read;
//	ap_hard_timeout("util_read", (request_rec*)ipstream);
	len_read = ap_get_client_block((request_rec*)ipstream, g_buffer, SIZEOFMODULEBUFFER);
//	ap_reset_timeout((request_rec*)ipstream);
	*req = g_buffer;
	*retsize =  len_read;
	return 0;
}

static int mod_axis_method_handler (request_rec *req_rec)
{
	int rc;
	int ix;
	Ax_soapstream* sstr;
	apr_array_header_t* arr;
	apr_table_entry_t* pHeaderTable;
	Ax_header* pAx_Headers;

	if ((!req_rec->handler) || strcmp(req_rec->handler, "axis") != 0)
	{
        return DECLINED;
	}

	sstr = malloc(sizeof(Ax_soapstream));

	sstr->transport.pSendFunct = send_response_bytes;
	sstr->transport.pGetFunct = get_request_bytes;
	sstr->transport.pSendTrtFunct = send_transport_information;
	sstr->transport.pGetTrtFunct = send_transport_information; /*isn't there a get transport information function for apache module ?*/

	sstr->trtype = APTHTTP;
	/*req_rec is used as both input and output streams*/
	sstr->str.ip_stream = req_rec;
	sstr->str.op_stream = req_rec;
	/*just add some sessionid*/
	sstr->sessionid = "this is temporary session id";


	/*set up the read policy from the client.*/
	if ((rc = ap_setup_client_block(req_rec, REQUEST_CHUNKED_ERROR)) != OK)
	{
		return rc;
	}

	/*the member, "path" of "parsed_uri" contains the uri of the*/ 
	/*request (i.e "/abc/xyz" part of http://somehost/abc/xyz)*/
	sstr->so.http.uri_path = req_rec->parsed_uri.path;

	/*ap_table_elts returns an array_header struct. The nelts element of that struct contains the number of*/
	/*input header elements. Finally assigns that to the axis soap data structure. */
	sstr->so.http.ip_headercount = ap_table_elts(req_rec->headers_in)->nelts;  


	if (sstr->so.http.ip_headercount > 0)
	{
		/*obtain the array_header from the headers_in table and assign it to the axis soap structure*/
		arr = ap_table_elts(req_rec->headers_in);
		pHeaderTable = arr->elts;
		sstr->so.http.ip_headers = malloc(sizeof(Ax_header)*sstr->so.http.ip_headercount);
		pAx_Headers = sstr->so.http.ip_headers;
		for (ix = 0; ix < sstr->so.http.ip_headercount; ix++)
		{
			(pAx_Headers+ix)->headername = (pHeaderTable+ix)->key;
			(pAx_Headers+ix)->headervalue = (pHeaderTable+ix)->val;
		}	
	}
	/*Determine the http method and assign it to the axis soap structure*/
	switch (req_rec->method_number)
	{
	case M_GET:
      sstr->so.http.ip_method = AXIS_HTTP_GET;
	  req_rec->content_type = "text/html"; 
      break;
	case M_POST:
      sstr->so.http.ip_method = AXIS_HTTP_POST;
	  req_rec->content_type = "text/xml"; 
	/*for SOAP 1.2 this this should be "application/soap+xml" */
	/*but keep this for the moment*/
      break;
	default:
      sstr->so.http.ip_method = AXIS_HTTP_UNSUPPORTED;   
	}

  	/*tell the client that we are ready to receive content and check whether client will send content*/
	/*control will pass to this block only if there is body content in the request*/
    if (ap_should_client_block(req_rec));

	if(0 != process_request(sstr))
	{
		ap_rputs("SOAP Engine failed to response",req_rec);
		return OK;
	}


	free(sstr);
	/*free(arr);*/
	return OK;
}

static void mod_axis_register_hooks (apr_pool_t *p)
{
	ap_hook_child_init(module_init, NULL, NULL, APR_HOOK_REALLY_FIRST);
	/*ap_hook_pre_connection(axis_Init, NULL, NULL, APR_HOOK_FIRST);*/
	ap_hook_handler(mod_axis_method_handler, NULL, NULL, APR_HOOK_LAST);
	/*ap_hook_process_connection(axis_Fini, NULL, NULL, APR_HOOK_REALLY_LAST);*/
}


module AP_MODULE_DECLARE_DATA axis_module =
{

	STANDARD20_MODULE_STUFF,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	mod_axis_register_hooks,
};