147 lines
4.3 KiB
C++
147 lines
4.3 KiB
C++
/*
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* Copyright (c) 2016, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* This file implements the CoAP server message dispatch.
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*/
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#include <coap/coap_server.hpp>
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#include <common/code_utils.hpp>
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namespace Thread {
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namespace Coap {
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Server::Server(Ip6::Udp &aUdp, uint16_t aPort):
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mSocket(aUdp)
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{
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mPort = aPort;
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mResources = NULL;
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}
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ThreadError Server::Start()
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{
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ThreadError error;
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Ip6::SockAddr sockaddr;
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sockaddr.mPort = mPort;
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SuccessOrExit(error = mSocket.Open(&HandleUdpReceive, this));
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SuccessOrExit(error = mSocket.Bind(sockaddr));
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exit:
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return error;
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}
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ThreadError Server::Stop()
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{
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return mSocket.Close();
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}
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ThreadError Server::AddResource(Resource &aResource)
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{
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ThreadError error = kThreadError_None;
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for (Resource *cur = mResources; cur; cur = cur->mNext)
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{
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VerifyOrExit(cur != &aResource, error = kThreadError_Busy);
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}
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aResource.mNext = mResources;
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mResources = &aResource;
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exit:
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return error;
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}
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void Server::HandleUdpReceive(void *aContext, otMessage aMessage, const otMessageInfo *aMessageInfo)
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{
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Server *obj = reinterpret_cast<Server *>(aContext);
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obj->HandleUdpReceive(*static_cast<Message *>(aMessage), *static_cast<const Ip6::MessageInfo *>(aMessageInfo));
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}
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void Server::HandleUdpReceive(Message &aMessage, const Ip6::MessageInfo &aMessageInfo)
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{
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Header header;
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char uriPath[kMaxReceivedUriPath];
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char *curUriPath = uriPath;
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const Header::Option *coapOption;
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SuccessOrExit(header.FromMessage(aMessage));
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aMessage.MoveOffset(header.GetLength());
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coapOption = header.GetCurrentOption();
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while (coapOption != NULL)
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{
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switch (coapOption->mNumber)
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{
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case Header::Option::kOptionUriPath:
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VerifyOrExit(coapOption->mLength < sizeof(uriPath) - static_cast<size_t>(curUriPath - uriPath), ;);
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memcpy(curUriPath, coapOption->mValue, coapOption->mLength);
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curUriPath[coapOption->mLength] = '/';
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curUriPath += coapOption->mLength + 1;
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break;
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case Header::Option::kOptionContentFormat:
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break;
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default:
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ExitNow();
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}
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coapOption = header.GetNextOption();
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}
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curUriPath[-1] = '\0';
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for (Resource *resource = mResources; resource; resource = resource->mNext)
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{
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if (strcmp(resource->mUriPath, uriPath) == 0)
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{
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resource->HandleRequest(header, aMessage, aMessageInfo);
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ExitNow();
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}
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}
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exit:
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{}
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}
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Message *Server::NewMessage(uint16_t aReserved)
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{
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return mSocket.NewMessage(aReserved);
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}
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ThreadError Server::SendMessage(Message &aMessage, const Ip6::MessageInfo &aMessageInfo)
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{
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return mSocket.SendTo(aMessage, aMessageInfo);
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}
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} // namespace Coap
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} // namespace Thread
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