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handler.c
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handler.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Cherokee
*
* Authors:
* Alvaro Lopez Ortega <alvaro@alobbs.com>
*
* Copyright (C) 2001-2014 Alvaro Lopez Ortega
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "common-internal.h"
#include "handler.h"
#include <stdlib.h>
#include <string.h>
#include "connection.h"
ret_t
cherokee_handler_init_base (cherokee_handler_t *hdl,
void *conn,
cherokee_handler_props_t *props,
cherokee_plugin_info_handler_t *info)
{
/* Init the base class
*/
cherokee_module_init_base (MODULE(hdl), MODULE_PROPS(props), PLUGIN_INFO(info));
/* Pure virtual methods
*/
hdl->read_post = NULL;
hdl->add_headers = NULL;
hdl->step = NULL;
/* Parent reference
*/
hdl->connection = conn;
return ret_ok;
}
/* Virtual method hiding layer
*/
ret_t
cherokee_handler_free (cherokee_handler_t *hdl)
{
/* Sanity check
*/
return_if_fail (hdl != NULL, ret_error);
if (MODULE(hdl)->free == NULL) {
return ret_error;
}
MODULE(hdl)->free (hdl);
/* Free the handler memory
*/
free (hdl);
return ret_ok;
}
ret_t
cherokee_handler_init (cherokee_handler_t *hdl)
{
handler_func_init_t init_func;
/* Sanity check
*/
return_if_fail (hdl != NULL, ret_error);
init_func = (handler_func_init_t) MODULE(hdl)->init;
if (init_func) {
return init_func(hdl);
}
return ret_error;
}
ret_t
cherokee_handler_read_post (cherokee_handler_t *hdl)
{
if (unlikely (hdl->read_post == NULL)) {
return ret_error;
}
return hdl->read_post(hdl);
}
ret_t
cherokee_handler_add_headers (cherokee_handler_t *hdl,
cherokee_buffer_t *buffer)
{
/* Sanity check
*/
return_if_fail (hdl != NULL, ret_error);
if (hdl->add_headers) {
return hdl->add_headers (hdl, buffer);
}
return ret_error;
}
ret_t
cherokee_handler_step (cherokee_handler_t *hdl,
cherokee_buffer_t *buffer)
{
/* Sanity check
*/
return_if_fail (hdl != NULL, ret_error);
if (hdl->step) {
return hdl->step (hdl, buffer);
}
return ret_error;
}
/* Handler properties methods
*/
ret_t
cherokee_handler_props_init_base (cherokee_handler_props_t *props,
module_func_props_free_t free_func)
{
props->valid_methods = http_unknown;
return cherokee_module_props_init_base (MODULE_PROPS(props), free_func);
}
ret_t
cherokee_handler_props_free_base (cherokee_handler_props_t *props)
{
return cherokee_module_props_free_base (MODULE_PROPS(props));
}
/* Utilities
*/
ret_t
cherokee_handler_add_header_options (cherokee_handler_t *hdl,
cherokee_buffer_t *buffer)
{
ret_t ret;
int http_n;
const char *method_name;
cuint_t method_name_len;
cherokee_http_method_t method;
cherokee_http_method_t supported_methods;
cherokee_boolean_t first = true;
/* Introspect the handler
*/
supported_methods = PLUGIN_INFO_HANDLER (MODULE (hdl)->info)->valid_methods;
/* Build the response string
*/
cherokee_buffer_add_str (buffer, "Allow: ");
for (http_n=0; http_n < cherokee_http_method_LENGTH; http_n++)
{
method = HTTP_METHOD (1LL << http_n);
if (supported_methods & method) {
method_name = NULL;
method_name_len = 0;
if (! first) {
cherokee_buffer_add_str (buffer, ", ");
} else {
first = false;
}
ret = cherokee_http_method_to_string (method, &method_name, &method_name_len);
if (unlikely ((ret != ret_ok) || (! method_name))) {
continue;
}
cherokee_buffer_add (buffer, method_name, method_name_len);
}
}
cherokee_buffer_add_str (buffer, CRLF);
return ret_ok;
}