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87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
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This file is part of libmicrohttpd
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Copyright (C) 2007-2018 Daniel Pittman and Christian Grothoff
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file lib/request_info.c
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* @brief implementation of MHD_request_get_information_sz()
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* @author Christian Grothoff
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*/
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#include "internal.h"
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/**
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* Obtain information about the given request.
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* Use wrapper macro #MHD_request_get_information() instead of direct use
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* of this function.
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*
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* @param request what request to get information about
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* @param info_type what information is desired?
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* @param[out] return_value pointer to union where requested information will
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* be stored
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* @param return_value_size size of union MHD_RequestInformation at compile
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* time
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* @return #MHD_YES on success, #MHD_NO on error
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* (@a info_type is unknown, NULL pointer etc.)
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* @ingroup specialized
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*/
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enum MHD_Bool
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MHD_request_get_information_sz (struct MHD_Request *request,
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enum MHD_RequestInformationType info_type,
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union MHD_RequestInformation *return_value,
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size_t return_value_size)
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{
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#define CHECK_SIZE(type) if (sizeof(type) < return_value_size) \
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return MHD_NO
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switch (info_type)
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{
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case MHD_REQUEST_INFORMATION_CONNECTION:
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CHECK_SIZE (struct MHD_Connection *);
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return_value->connection = request->connection;
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return MHD_YES;
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case MHD_REQUEST_INFORMATION_CLIENT_CONTEXT:
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CHECK_SIZE (void **);
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return_value->request_context = &request->client_context;
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return MHD_YES;
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case MHD_REQUEST_INFORMATION_HTTP_VERSION:
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CHECK_SIZE (const char *);
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return_value->http_version = request->version_s;
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return MHD_YES;
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case MHD_REQUEST_INFORMATION_HTTP_METHOD:
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CHECK_SIZE (const char *);
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return_value->http_method = request->method_s;
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return MHD_YES;
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case MHD_REQUEST_INFORMATION_HEADER_SIZE:
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CHECK_SIZE (size_t);
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if ( (MHD_REQUEST_HEADERS_RECEIVED > request->state) ||
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(MHD_REQUEST_CLOSED == request->state) )
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return MHD_NO; /* invalid, too early! */
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return_value->header_size = request->header_size;
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return MHD_YES;
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default:
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return MHD_NO;
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}
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#undef CHECK_SIZE
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}
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/* end of request_info.c */
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