/* Copyright 2006 - Chris Josephes
 *
 * Licensed under the General Public License, version 2.0
 * You may not use this file except in compliance with this license.
 * Full text of the license is at http://www.gnu.org/copyleft/gpl.html
 *
 * 
 */

/*
 * Written by Chris Josephes <cpj1@visi.com>
 *
 * This module adds the following logging directives to Apache
 *
 * %...S: remote port of client connection
 *
 */

#include "apr_strings.h"
#include "apr_lib.h"
#include "apr_hash.h"
#include "apr_optional.h"

#include "ap_config.h"
#include "mod_log_config.h"
#include "httpd.h"
#include "http_core.h"
#include "http_config.h"
#include "http_connection.h"
#include "http_protocol.h"

module AP_MODULE_DECLARE_DATA log_remote_port_module;

static const char remote_port_filer_name[] = "LOG_REMOTE_PORT";

/*
 * Format handler
 */

static const char *log_rp(request_rec *r, char *a)
{
	return apr_itoa(r->pool, r->connection->remote_addr->port);
}

/*
 * Pre-configuration handler
 */

static int log_rp_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
{
	static APR_OPTIONAL_FN_TYPE(ap_register_log_handler) *log_pfn_register;
	log_pfn_register = APR_RETRIEVE_OPTIONAL_FN(ap_register_log_handler);
	if (log_pfn_register) {
		log_pfn_register(p, "S", log_rp, 0);
	}
	return OK;
}

/*
 * Register Hooks
 */

static void register_hooks(apr_pool_t *p)
{
	static const char *pre[] = { "mod_log_config.c", NULL };
	ap_hook_pre_config(log_rp_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
}

module AP_MODULE_DECLARE_DATA log_remote_port_module=
{
	STANDARD20_MODULE_STUFF,
	NULL,				/* create per-dir config */
	NULL,				/* merge per-dir config */
	NULL,				/* server config */
	NULL,				/* merge server config */
	NULL,				/* command apr_table_t */
	register_hooks			/* register_hooks */
};