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/*
This file is part of libmicrohttpd
Copyright (C) 2007-2018 Daniel Pittman and Christian Grothoff
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file lib/request_info.c
* @brief implementation of MHD_request_get_information_sz()
* @author Christian Grothoff
*/
#include "internal.h"
/**
* Obtain information about the given request.
* Use wrapper macro #MHD_request_get_information() instead of direct use
* of this function.
*
* @param request what request to get information about
* @param info_type what information is desired?
* @param[out] return_value pointer to union where requested information will
* be stored
* @param return_value_size size of union MHD_RequestInformation at compile
* time
* @return #MHD_YES on success, #MHD_NO on error
* (@a info_type is unknown, NULL pointer etc.)
* @ingroup specialized
*/
enum MHD_Bool
MHD_request_get_information_sz (struct MHD_Request *request,
enum MHD_RequestInformationType info_type,
union MHD_RequestInformation *return_value,
size_t return_value_size)
{
#define CHECK_SIZE(type) if (sizeof(type) < return_value_size) \
return MHD_NO
switch (info_type)
{
case MHD_REQUEST_INFORMATION_CONNECTION:
CHECK_SIZE (struct MHD_Connection *);
return_value->connection = request->connection;
return MHD_YES;
case MHD_REQUEST_INFORMATION_CLIENT_CONTEXT:
CHECK_SIZE (void **);
return_value->request_context = &request->client_context;
return MHD_YES;
case MHD_REQUEST_INFORMATION_HTTP_VERSION:
CHECK_SIZE (const char *);
return_value->http_version = request->version_s;
return MHD_YES;
case MHD_REQUEST_INFORMATION_HTTP_METHOD:
CHECK_SIZE (const char *);
return_value->http_method = request->method_s;
return MHD_YES;
case MHD_REQUEST_INFORMATION_HEADER_SIZE:
CHECK_SIZE (size_t);
if ( (MHD_REQUEST_HEADERS_RECEIVED > request->state) ||
(MHD_REQUEST_CLOSED == request->state) )
return MHD_NO; /* invalid, too early! */
return_value->header_size = request->header_size;
return MHD_YES;
default:
return MHD_NO;
}
#undef CHECK_SIZE
}
/* end of request_info.c */
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