Gav Wood
10 years ago
12 changed files with 636 additions and 38 deletions
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/*
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This file is part of cpp-ethereum. |
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|
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cpp-ethereum 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 3 of the License, or |
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(at your option) any later version. |
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|
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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
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*/ |
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/** @file DappHost.cpp
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* @author Arkadiy Paronyan <arkadiy@ethdev.org> |
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* @date 2015 |
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*/ |
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#include "DappHost.h" |
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#include <QUrl> |
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#include <microhttpd.h> |
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#include <boost/algorithm/string.hpp> |
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#include <libdevcore/Common.h> |
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using namespace dev; |
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DappHost::DappHost(int _port, int _threads): |
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m_port(_port), m_threads(_threads), m_running(false), m_daemon(nullptr) |
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{ |
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startListening(); |
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} |
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DappHost::~DappHost() |
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{ |
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stopListening(); |
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} |
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void DappHost::startListening() |
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{ |
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if(!this->m_running) |
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{ |
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this->m_daemon = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, this->m_port, nullptr, nullptr, &DappHost::callback, this, MHD_OPTION_THREAD_POOL_SIZE, this->m_threads, MHD_OPTION_END); |
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if (this->m_daemon != nullptr) |
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this->m_running = true; |
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} |
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} |
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void DappHost::stopListening() |
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{ |
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if(this->m_running) |
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{ |
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MHD_stop_daemon(this->m_daemon); |
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this->m_running = false; |
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} |
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} |
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void DappHost::sendOptionsResponse(MHD_Connection* _connection) |
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{ |
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MHD_Response *result = MHD_create_response_from_data(0, NULL, 0, 1); |
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MHD_add_response_header(result, "Allow", "GET, OPTIONS"); |
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MHD_add_response_header(result, "Access-Control-Allow-Headers", "origin, content-type, accept"); |
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MHD_add_response_header(result, "DAV", "1"); |
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MHD_queue_response(_connection, MHD_HTTP_OK, result); |
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MHD_destroy_response(result); |
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} |
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|
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void DappHost::sendNotAllowedResponse(MHD_Connection* _connection) |
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{ |
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MHD_Response *result = MHD_create_response_from_data(0, NULL, 0, 1); |
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MHD_add_response_header(result, "Allow", "GET, OPTIONS"); |
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MHD_queue_response(_connection, MHD_HTTP_METHOD_NOT_ALLOWED, result); |
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MHD_destroy_response(result); |
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} |
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void DappHost::sendResponse(std::string const& _url, MHD_Connection* _connection) |
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{ |
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QUrl requestUrl(QString::fromStdString(_url)); |
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QString path = requestUrl.path().toLower(); |
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if (path.isEmpty()) |
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path = "/"; |
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bytesConstRef response; |
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unsigned code = MHD_HTTP_NOT_FOUND; |
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std::string contentType; |
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while (!path.isEmpty()) |
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{ |
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auto iter = m_entriesByPath.find(path); |
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if (iter != m_entriesByPath.end()) |
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{ |
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ManifestEntry const* entry = iter->second; |
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auto contentIter = m_dapp.content.find(entry->hash); |
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if (contentIter == m_dapp.content.end()) |
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break; |
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response = bytesConstRef(contentIter->second.data(), contentIter->second.size()); |
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code = entry->httpStatus != 0 ? entry->httpStatus : MHD_HTTP_OK; |
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contentType = entry->contentType; |
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break; |
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} |
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path.truncate(path.length() - 1); |
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path = path.mid(0, path.lastIndexOf('/')); |
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} |
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MHD_Response *result = MHD_create_response_from_data(response.size(), const_cast<byte*>(response.data()), 0, 1); |
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if (!contentType.empty()) |
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MHD_add_response_header(result, "Content-Type", contentType.c_str()); |
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MHD_queue_response(_connection, code, result); |
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MHD_destroy_response(result); |
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} |
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int DappHost::callback(void* _cls, MHD_Connection* _connection, char const* _url, char const* _method, char const* _version, char const* _uploadData, size_t* _uploadDataSize, void** _conCls) |
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{ |
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(void)_version; |
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(void)_uploadData; |
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(void)_uploadDataSize; |
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(void)_conCls; |
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DappHost* host = static_cast<DappHost*>(_cls); |
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if (std::string("GET") == _method) |
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host->sendResponse(std::string(_url), _connection); |
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else if (std::string("OPTIONS") == _method) |
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host->sendOptionsResponse(_connection); |
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else |
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host->sendNotAllowedResponse(_connection); |
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return MHD_YES; |
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} |
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QUrl DappHost::hostDapp(Dapp&& _dapp) |
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{ |
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m_dapp = std::move(_dapp); |
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m_entriesByPath.clear(); |
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for (ManifestEntry const& entry: m_dapp.manifest.entries) |
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m_entriesByPath[QString::fromStdString(entry.path)] = &entry; |
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return QUrl(QString("http://localhost:%1/").arg(m_port)); |
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} |
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@ -0,0 +1,58 @@ |
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/*
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This file is part of cpp-ethereum. |
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|
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cpp-ethereum 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 3 of the License, or |
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(at your option) any later version. |
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|
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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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/** @file DappHost.h
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* @author Arkadiy Paronyan <arkadiy@ethdev.org> |
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* @date 2015 |
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*/ |
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#pragma once |
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#include <map> |
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#include <QUrl> |
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#include <QString> |
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#include "DappLoader.h" |
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struct MHD_Daemon; |
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struct MHD_Connection; |
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/// DApp web server. Servers web content, resolves paths by hashes
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class DappHost |
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{ |
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public: |
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/// @param _port Network pork to listen for incoming connections
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/// @param _threads Max number of threads to process requests
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DappHost(int _port, int _threads = 10); |
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virtual ~DappHost(); |
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/// Load and host a dapp. Previsous dapp in discarded. Synchronous
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QUrl hostDapp(Dapp&& _dapp); |
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private: |
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void startListening(); |
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void stopListening(); |
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void sendOptionsResponse(MHD_Connection* _connection); |
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void sendNotAllowedResponse(MHD_Connection* _connection); |
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void sendResponse(std::string const& _url, MHD_Connection* _connection); |
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static int callback(void* _cls, MHD_Connection* _connection, char const* _url, char const* _method, char const* _version, char const* _uploadData, size_t* _uploadDataSize, void** _conCls); |
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int m_port; |
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int m_threads; |
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bool m_running; |
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MHD_Daemon* m_daemon; |
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Dapp m_dapp; |
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std::map<QString, ManifestEntry const*> m_entriesByPath; |
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}; |
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@ -0,0 +1,203 @@ |
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/*
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This file is part of cpp-ethereum. |
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|
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cpp-ethereum 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 3 of the License, or |
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(at your option) any later version. |
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|
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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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/** @file DappLoader.cpp
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* @author Arkadiy Paronyan <arkadiy@ethdev.org> |
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* @date 2015 |
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*/ |
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#include <algorithm> |
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#include <json/json.h> |
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#include <QUrl> |
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#include <QStringList> |
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#include <QNetworkAccessManager> |
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#include <QNetworkReply> |
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#include <libdevcore/Common.h> |
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#include <libdevcore/RLP.h> |
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#include <libdevcrypto/CryptoPP.h> |
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#include <libdevcrypto/SHA3.h> |
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#include <libethcore/CommonJS.h> |
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#include <libethereum/Client.h> |
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#include <libwebthree/WebThree.h> |
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#include "DappLoader.h" |
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using namespace dev; |
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using namespace dev::eth; |
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using namespace dev::crypto; |
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Address c_registrar = Address("0000000000000000000000000000000000000a28"); |
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Address c_urlHint = Address("0000000000000000000000000000000000000a29"); |
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QString contentsOfQResource(std::string const& res); |
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DappLoader::DappLoader(QObject* _parent, WebThreeDirect* _web3): |
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QObject(_parent), m_web3(_web3) |
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{ |
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connect(&m_net, &QNetworkAccessManager::finished, this, &DappLoader::downloadComplete); |
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} |
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DappLocation DappLoader::resolveAppUri(QString const& _uri) |
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{ |
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QUrl url(_uri); |
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if (!url.scheme().isEmpty() && url.scheme() != "eth") |
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throw dev::Exception(); //TODO:
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QStringList parts = url.host().split('.', QString::SkipEmptyParts); |
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QStringList domainParts; |
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std::reverse(parts.begin(), parts.end()); |
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parts.append(url.path().split('/', QString::SkipEmptyParts)); |
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Address address = c_registrar; |
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Address lastAddress; |
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int partIndex = 0; |
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h256 contentHash; |
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while (address && partIndex < parts.length()) |
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{ |
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lastAddress = address; |
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string32 name = { 0 }; |
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QByteArray utf8 = parts[partIndex].toUtf8(); |
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std::copy(utf8.data(), utf8.data() + utf8.size(), name.data()); |
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address = abiOut<Address>(web3()->ethereum()->call(address, abiIn("addr(string32)", name))); |
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domainParts.append(parts[partIndex]); |
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if (!address) |
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{ |
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//we have the address of the last part, try to get content hash
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contentHash = abiOut<h256>(web3()->ethereum()->call(lastAddress, abiIn("content(string32)", name))); |
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if (!contentHash) |
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throw dev::Exception() << errinfo_comment("Can't resolve address"); |
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} |
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++partIndex; |
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} |
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string32 contentUrl = abiOut<string32>(web3()->ethereum()->call(c_urlHint, abiIn("url(hash256)", contentHash))); |
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QString domain = domainParts.join('/'); |
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parts.erase(parts.begin(), parts.begin() + partIndex); |
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QString path = parts.join('/'); |
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QString contentUrlString = QString::fromUtf8(std::string(contentUrl.data(), contentUrl.size()).c_str()); |
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if (!contentUrlString.startsWith("http://") || !contentUrlString.startsWith("https://")) |
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contentUrlString = "http://" + contentUrlString; |
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return DappLocation { domain, path, contentUrlString, contentHash }; |
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} |
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void DappLoader::downloadComplete(QNetworkReply* _reply) |
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{ |
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try |
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{ |
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//try to interpret as rlp
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QByteArray data = _reply->readAll(); |
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_reply->deleteLater(); |
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h256 expected = m_uriHashes[_reply->request().url()]; |
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bytes package(reinterpret_cast<unsigned char const*>(data.constData()), reinterpret_cast<unsigned char const*>(data.constData() + data.size())); |
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Secp256k1 dec; |
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dec.decrypt(expected, package); |
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h256 got = sha3(package); |
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if (got != expected) |
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{ |
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//try base64
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data = QByteArray::fromBase64(data); |
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package = bytes(reinterpret_cast<unsigned char const*>(data.constData()), reinterpret_cast<unsigned char const*>(data.constData() + data.size())); |
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dec.decrypt(expected, package); |
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got = sha3(package); |
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if (got != expected) |
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throw dev::Exception() << errinfo_comment("Dapp content hash does not match"); |
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} |
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RLP rlp(package); |
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loadDapp(rlp); |
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} |
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catch (...) |
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{ |
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qWarning() << tr("Error downloading DApp: ") << boost::current_exception_diagnostic_information().c_str(); |
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emit dappError(); |
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} |
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} |
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void DappLoader::loadDapp(RLP const& _rlp) |
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{ |
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Dapp dapp; |
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unsigned len = _rlp.itemCountStrict(); |
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dapp.manifest = loadManifest(_rlp[0].toString()); |
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for (unsigned c = 1; c < len; ++c) |
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{ |
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bytesConstRef content = _rlp[c].toBytesConstRef(); |
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h256 hash = sha3(content); |
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auto entry = std::find_if(dapp.manifest.entries.cbegin(), dapp.manifest.entries.cend(), [=](ManifestEntry const& _e) { return _e.hash == hash; }); |
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if (entry != dapp.manifest.entries.cend()) |
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{ |
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if (entry->path == "/deployment.js") |
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{ |
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//inject web3 code
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QString code; |
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code += contentsOfQResource(":/js/bignumber.min.js"); |
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code += "\n"; |
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code += contentsOfQResource(":/js/webthree.js"); |
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code += "\n"; |
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code += contentsOfQResource(":/js/setup.js"); |
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code += "\n"; |
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QByteArray res = code.toLatin1(); |
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bytes b(res.data(), res.data() + res.size()); |
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b.insert(b.end(), content.begin(), content.end()); |
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dapp.content[hash] = b; |
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} |
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else |
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dapp.content[hash] = content.toBytes(); |
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} |
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else |
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throw dev::Exception() << errinfo_comment("Dapp content hash does not match"); |
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} |
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emit dappReady(dapp); |
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} |
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Manifest DappLoader::loadManifest(std::string const& _manifest) |
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{ |
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/// https://github.com/ethereum/go-ethereum/wiki/URL-Scheme
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Manifest manifest; |
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Json::Reader jsonReader; |
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Json::Value root; |
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jsonReader.parse(_manifest, root, false); |
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Json::Value entries = root["entries"]; |
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for (Json::ValueIterator it = entries.begin(); it != entries.end(); ++it) |
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{ |
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Json::Value const& entryValue = *it; |
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std::string path = entryValue["path"].asString(); |
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if (path.size() == 0 || path[0] != '/') |
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path = "/" + path; |
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std::string contentType = entryValue["contentType"].asString(); |
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std::string strHash = entryValue["hash"].asString(); |
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if (strHash.length() == 64) |
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strHash = "0x" + strHash; |
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h256 hash = jsToFixed<32>(strHash); |
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unsigned httpStatus = entryValue["status"].asInt(); |
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manifest.entries.push_back(ManifestEntry{ path, hash, contentType, httpStatus }); |
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} |
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return manifest; |
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} |
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void DappLoader::loadDapp(QString const& _uri) |
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{ |
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DappLocation location = resolveAppUri(_uri); |
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QUrl uri(location.contentUri); |
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QNetworkRequest request(uri); |
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m_uriHashes[uri] = location.contentHash; |
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m_net.get(request); |
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} |
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@ -0,0 +1,94 @@ |
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/*
|
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This file is part of cpp-ethereum. |
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|
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cpp-ethereum is free software: you can redistribute it and/or modify |
|||
it under the terms of the GNU General Public License as published by |
|||
the Free Software Foundation, either version 3 of the License, or |
|||
(at your option) any later version. |
|||
|
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cpp-ethereum 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. |
|||
|
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You should have received a copy of the GNU General Public License |
|||
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
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*/ |
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/** @file DappLoader.h
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* @author Arkadiy Paronyan <arkadiy@ethdev.org> |
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* @date 2015 |
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*/ |
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|
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#pragma once |
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#include <map> |
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#include <string> |
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#include <vector> |
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#include <QObject> |
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#include <QString> |
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#include <QUrl> |
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#include <QNetworkAccessManager> |
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#include <libdevcore/FixedHash.h> |
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namespace dev |
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{ |
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class WebThreeDirect; |
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class RLP; |
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} |
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struct ManifestEntry |
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{ |
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std::string path; |
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dev::h256 hash; |
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std::string contentType; |
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unsigned httpStatus; |
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}; |
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|
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struct Manifest |
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{ |
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std::vector<ManifestEntry> entries; |
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}; |
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|
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struct Dapp |
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{ |
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Manifest manifest; |
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std::map<dev::h256, dev::bytes> content; |
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}; |
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|
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|
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struct DappLocation |
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{ |
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QString canonDomain; |
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QString path; |
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QString contentUri; |
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dev::h256 contentHash; |
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}; |
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///Downloads, unpacks and prepares DApps for hosting
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class DappLoader: public QObject |
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{ |
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Q_OBJECT |
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public: |
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DappLoader(QObject* _parent, dev::WebThreeDirect* _web3); |
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///Load a new DApp. Resolves a name with a name reg contract. Asynchronous. dappReady is emitted once everything is read, dappError othervise
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///@param _uri Eth name path
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void loadDapp(QString const& _uri); |
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signals: |
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void dappReady(Dapp& _dapp); |
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void dappError(); |
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private slots: |
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void downloadComplete(QNetworkReply* _reply); |
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private: |
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dev::WebThreeDirect* web3() const { return m_web3; } |
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DappLocation resolveAppUri(QString const& _uri); |
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void loadDapp(dev::RLP const& _rlp); |
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Manifest loadManifest(std::string const& _manifest); |
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|
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dev::WebThreeDirect* m_web3; |
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QNetworkAccessManager m_net; |
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std::map<QUrl, dev::h256> m_uriHashes; |
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}; |
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@ -0,0 +1,28 @@ |
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/*
|
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This file is part of cpp-ethereum. |
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|
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cpp-ethereum is free software: you can redistribute it and/or modify |
|||
it under the terms of the GNU General Public License as published by |
|||
the Free Software Foundation, either version 3 of the License, or |
|||
(at your option) any later version. |
|||
|
|||
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
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*/ |
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/** @file WebPage.cpp
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* @author Arkadiy Paronyan arkadiy@ethdev.com> |
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* @date 2015 |
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*/ |
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#include "WebPage.h" |
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|
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void WebPage::javaScriptConsoleMessage(QWebEnginePage::JavaScriptConsoleMessageLevel _level, const QString& _message, int _lineNumber, const QString& _sourceID) |
|||
{ |
|||
QString prefix = _level == QWebEnginePage::ErrorMessageLevel ? "error" : _level == QWebEnginePage::WarningMessageLevel ? "warning" : ""; |
|||
emit consoleMessage(QString("%1(%2:%3):%4").arg(prefix).arg(_sourceID).arg(_lineNumber).arg(_message)); |
|||
} |
|||
@ -0,0 +1,40 @@ |
|||
/*
|
|||
This file is part of cpp-ethereum. |
|||
|
|||
cpp-ethereum is free software: you can redistribute it and/or modify |
|||
it under the terms of the GNU General Public License as published by |
|||
the Free Software Foundation, either version 3 of the License, or |
|||
(at your option) any later version. |
|||
|
|||
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|||
*/ |
|||
/** @file WebPage.h
|
|||
* @author Arkadiy Paronyan arkadiy@ethdev.com> |
|||
* @date 2015 |
|||
*/ |
|||
|
|||
#pragma once |
|||
|
|||
#include <QString> |
|||
#pragma GCC diagnostic push |
|||
#pragma GCC diagnostic ignored "-Wpedantic" //QtWebEngineWidgets/qwebenginecertificateerror.h:78:348: error: extra ';'
|
|||
#include <QtWebEngineWidgets/QWebEnginePage> |
|||
#pragma GCC diagnostic pop |
|||
|
|||
class WebPage: public QWebEnginePage |
|||
{ |
|||
Q_OBJECT |
|||
public: |
|||
WebPage(QObject* _parent): QWebEnginePage(_parent) { } |
|||
signals: |
|||
void consoleMessage(QString const& _msg); |
|||
|
|||
protected: |
|||
void javaScriptConsoleMessage(QWebEnginePage::JavaScriptConsoleMessageLevel _level, const QString& _message, int _lineNumber, const QString& _sourceID) override; |
|||
}; |
|||
Loading…
Reference in new issue