mirror of https://github.com/aria2/aria2
302 lines
9.8 KiB
C++
302 lines
9.8 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2009 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "HttpServerBodyCommand.h"
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#include "SocketCore.h"
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#include "DownloadEngine.h"
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#include "HttpServer.h"
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#include "HttpHeader.h"
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#include "Logger.h"
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#include "LogFactory.h"
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#include "RequestGroup.h"
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#include "RequestGroupMan.h"
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#include "RecoverableException.h"
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#include "HttpServerResponseCommand.h"
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#include "OptionParser.h"
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#include "OptionHandler.h"
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#include "wallclock.h"
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#include "util.h"
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#include "fmt.h"
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#include "SocketRecvBuffer.h"
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#include "json.h"
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#include "DlAbortEx.h"
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#include "message.h"
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#include "RpcMethod.h"
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#include "RpcMethodFactory.h"
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#include "RpcRequest.h"
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#include "RpcResponse.h"
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#ifdef ENABLE_XML_RPC
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# include "XmlRpcRequestProcessor.h"
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# include "XmlRpcRequestParserStateMachine.h"
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#endif // ENABLE_XML_RPC
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namespace aria2 {
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HttpServerBodyCommand::HttpServerBodyCommand
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(cuid_t cuid,
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const SharedHandle<HttpServer>& httpServer,
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DownloadEngine* e,
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const SharedHandle<SocketCore>& socket)
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: Command(cuid),
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e_(e),
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socket_(socket),
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httpServer_(httpServer)
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{
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// To handle Content-Length == 0 case
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setStatus(Command::STATUS_ONESHOT_REALTIME);
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e_->addSocketForReadCheck(socket_, this);
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if(!httpServer_->getSocketRecvBuffer()->bufferEmpty()) {
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e_->setNoWait(true);
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}
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}
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HttpServerBodyCommand::~HttpServerBodyCommand()
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{
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e_->deleteSocketForReadCheck(socket_, this);
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}
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namespace {
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rpc::RpcResponse
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createJsonRpcErrorResponse
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(int code,
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const std::string& msg,
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const SharedHandle<ValueBase>& id)
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{
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SharedHandle<Dict> params = Dict::g();
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params->put("code", Integer::g(code));
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params->put("message", msg);
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rpc::RpcResponse res(code, params, id);
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return res;
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}
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} // namespace
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namespace {
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std::string getJsonRpcContentType(bool script)
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{
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return script ? "text/javascript" : "application/json-rpc";
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}
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} // namespace
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void HttpServerBodyCommand::sendJsonRpcResponse
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(const rpc::RpcResponse& res,
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const std::string& callback)
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{
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bool gzip = httpServer_->supportsGZip();
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std::string responseData = rpc::toJson(res, callback, gzip);
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if(res.code == 0) {
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httpServer_->feedResponse(responseData,
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getJsonRpcContentType(!callback.empty()));
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} else {
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httpServer_->disableKeepAlive();
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std::string httpCode;
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switch(res.code) {
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case -32600:
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httpCode = "400 Bad Request";
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break;
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case -32601:
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httpCode = "404 Not Found";
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break;
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default:
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httpCode = "500 Internal Server Error";
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};
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httpServer_->feedResponse(httpCode, A2STR::NIL,
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responseData,
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getJsonRpcContentType(!callback.empty()));
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}
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addHttpServerResponseCommand();
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}
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void HttpServerBodyCommand::sendJsonRpcBatchResponse
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(const std::vector<rpc::RpcResponse>& results,
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const std::string& callback)
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{
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bool gzip = httpServer_->supportsGZip();
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std::string responseData = rpc::toJsonBatch(results, callback, gzip);
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httpServer_->feedResponse(responseData,
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getJsonRpcContentType(!callback.empty()));
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addHttpServerResponseCommand();
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}
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void HttpServerBodyCommand::addHttpServerResponseCommand()
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{
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Command* command =
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new HttpServerResponseCommand(getCuid(), httpServer_, e_, socket_);
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e_->addCommand(command);
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e_->setNoWait(true);
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}
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rpc::RpcResponse
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HttpServerBodyCommand::processJsonRpcRequest(const Dict* jsondict)
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{
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SharedHandle<ValueBase> id = jsondict->get("id");
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if(!id) {
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return createJsonRpcErrorResponse(-32600, "Invalid Request.", Null::g());
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}
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const String* methodName = downcast<String>(jsondict->get("method"));
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if(!methodName) {
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return createJsonRpcErrorResponse(-32600, "Invalid Request.", id);
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}
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SharedHandle<List> params;
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const SharedHandle<ValueBase>& tempParams = jsondict->get("params");
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if(downcast<List>(tempParams)) {
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params = static_pointer_cast<List>(tempParams);
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} else if(!tempParams) {
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params = List::g();
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} else {
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// TODO No support for Named params
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return createJsonRpcErrorResponse(-32602, "Invalid params.", id);
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}
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rpc::RpcRequest req(methodName->s(), params, id);
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req.jsonRpc = true;
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SharedHandle<rpc::RpcMethod> method;
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try {
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method = rpc::RpcMethodFactory::create(req.methodName);
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} catch(RecoverableException& e) {
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A2_LOG_INFO_EX(EX_EXCEPTION_CAUGHT, e);
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return createJsonRpcErrorResponse(-32601, "Method not found.", id);
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}
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A2_LOG_INFO(fmt("Executing RPC method %s", req.methodName.c_str()));
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rpc::RpcResponse res = method->execute(req, e_);
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return res;
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}
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bool HttpServerBodyCommand::execute()
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{
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if(e_->getRequestGroupMan()->downloadFinished() || e_->isHaltRequested()) {
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return true;
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}
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try {
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if(socket_->isReadable(0) ||
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!httpServer_->getSocketRecvBuffer()->bufferEmpty() ||
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httpServer_->getContentLength() == 0) {
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timeoutTimer_ = global::wallclock();
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if(httpServer_->receiveBody()) {
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std::string reqPath = httpServer_->getRequestPath();
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reqPath.erase(std::find(reqPath.begin(), reqPath.end(), '#'),
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reqPath.end());
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std::string query(std::find(reqPath.begin(), reqPath.end(), '?'),
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reqPath.end());
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reqPath.erase(reqPath.size()-query.size(), query.size());
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// Do something for requestpath and body
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if(reqPath == "/rpc") {
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#ifdef ENABLE_XML_RPC
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rpc::RpcRequest req =
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rpc::XmlRpcRequestProcessor().parseMemory(httpServer_->getBody());
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SharedHandle<rpc::RpcMethod> method =
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rpc::RpcMethodFactory::create(req.methodName);
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A2_LOG_INFO(fmt("Executing RPC method %s", req.methodName.c_str()));
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rpc::RpcResponse res = method->execute(req, e_);
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bool gzip = httpServer_->supportsGZip();
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std::string responseData = rpc::toXml(res, gzip);
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httpServer_->feedResponse(responseData, "text/xml");
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addHttpServerResponseCommand();
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#endif // ENABLE_XML_RPC
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return true;
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} else if(reqPath == "/jsonrpc") {
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std::string callback;
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SharedHandle<ValueBase> json;
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try {
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if(httpServer_->getMethod() == "GET") {
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json::JsonGetParam param = json::decodeGetParams(query);
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callback = param.callback;
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json = json::decode(param.request);
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} else {
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json = json::decode(httpServer_->getBody());
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}
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} catch(RecoverableException& e) {
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A2_LOG_INFO_EX
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(fmt("CUID#%lld - Failed to parse JSON-RPC request",
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getCuid()),
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e);
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rpc::RpcResponse res
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(createJsonRpcErrorResponse(-32700, "Parse error.", Null::g()));
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sendJsonRpcResponse(res, callback);
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return true;
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}
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const Dict* jsondict = downcast<Dict>(json);
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if(jsondict) {
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rpc::RpcResponse res = processJsonRpcRequest(jsondict);
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sendJsonRpcResponse(res, callback);
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} else {
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const List* jsonlist = downcast<List>(json);
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if(jsonlist) {
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// This is batch call
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std::vector<rpc::RpcResponse> results;
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for(List::ValueType::const_iterator i = jsonlist->begin(),
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eoi = jsonlist->end(); i != eoi; ++i) {
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const Dict* jsondict = downcast<Dict>(*i);
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if(jsondict) {
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rpc::RpcResponse r = processJsonRpcRequest(jsondict);
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results.push_back(r);
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}
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}
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sendJsonRpcBatchResponse(results, callback);
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} else {
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rpc::RpcResponse res
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(createJsonRpcErrorResponse
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(-32600, "Invalid Request.", Null::g()));
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sendJsonRpcResponse(res, callback);
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}
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}
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return true;
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} else {
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return true;
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}
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} else {
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e_->addCommand(this);
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return false;
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}
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} else {
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if(timeoutTimer_.difference(global::wallclock()) >= 30) {
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A2_LOG_INFO("HTTP request body timeout.");
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return true;
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} else {
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e_->addCommand(this);
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return false;
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}
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}
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} catch(RecoverableException& e) {
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A2_LOG_INFO_EX
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(fmt("CUID#%lld - Error occurred while reading HTTP request body",
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getCuid()),
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e);
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return true;
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}
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}
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} // namespace aria2
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