Jarkko Poyry | 3c82736 | 2014-09-02 11:48:52 +0300 | [diff] [blame^] | 1 | /*------------------------------------------------------------------------- |
| 2 | * drawElements Quality Program Execution Server |
| 3 | * --------------------------------------------- |
| 4 | * |
| 5 | * Copyright 2014 The Android Open Source Project |
| 6 | * |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | * you may not use this file except in compliance with the License. |
| 9 | * You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, software |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | * See the License for the specific language governing permissions and |
| 17 | * limitations under the License. |
| 18 | * |
| 19 | *//*! |
| 20 | * \file |
| 21 | * \brief Execution Server Protocol. |
| 22 | *//*--------------------------------------------------------------------*/ |
| 23 | |
| 24 | #include "xsProtocol.hpp" |
| 25 | |
| 26 | using std::string; |
| 27 | using std::vector; |
| 28 | |
| 29 | namespace xs |
| 30 | { |
| 31 | |
| 32 | inline deUint32 swapEndianess (deUint32 value) |
| 33 | { |
| 34 | deUint32 b0 = (value >> 0) & 0xFF; |
| 35 | deUint32 b1 = (value >> 8) & 0xFF; |
| 36 | deUint32 b2 = (value >> 16) & 0xFF; |
| 37 | deUint32 b3 = (value >> 24) & 0xFF; |
| 38 | return (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; |
| 39 | } |
| 40 | |
| 41 | template <typename T> T networkToHost (T value); |
| 42 | template <typename T> T hostToNetwork (T value); |
| 43 | |
| 44 | template <> int networkToHost (int value) { return (int)swapEndianess((deUint32)value); } |
| 45 | template <> int hostToNetwork (int value) { return (int)swapEndianess((deUint32)value); } |
| 46 | |
| 47 | class MessageParser |
| 48 | { |
| 49 | public: |
| 50 | MessageParser (const deUint8* data, int dataSize) |
| 51 | : m_data (data) |
| 52 | , m_size (dataSize) |
| 53 | , m_pos (0) |
| 54 | { |
| 55 | } |
| 56 | |
| 57 | template <typename T> |
| 58 | T get (void) |
| 59 | { |
| 60 | XS_CHECK_MSG(m_pos + (int)sizeof(T) <= m_size, "Invalid payload size"); |
| 61 | T netValue; |
| 62 | deMemcpy(&netValue, &m_data[m_pos], sizeof(T)); |
| 63 | m_pos += sizeof(T); |
| 64 | return networkToHost(netValue); |
| 65 | } |
| 66 | |
| 67 | void getString (std::string& dst) |
| 68 | { |
| 69 | // \todo [2011-09-30 pyry] We should really send a size parameter instead. |
| 70 | while (m_data[m_pos] != 0) |
| 71 | { |
| 72 | dst += (char)m_data[m_pos++]; |
| 73 | XS_CHECK_MSG(m_pos < m_size, "Unterminated string payload"); |
| 74 | } |
| 75 | |
| 76 | m_pos += 1; |
| 77 | } |
| 78 | |
| 79 | void assumEnd (void) |
| 80 | { |
| 81 | if (m_pos != m_size) |
| 82 | XS_FAIL("Invalid payload size"); |
| 83 | } |
| 84 | |
| 85 | private: |
| 86 | const deUint8* m_data; |
| 87 | int m_size; |
| 88 | int m_pos; |
| 89 | }; |
| 90 | |
| 91 | class MessageWriter |
| 92 | { |
| 93 | public: |
| 94 | MessageWriter (MessageType msgType, std::vector<deUint8>& buf) |
| 95 | : m_buf(buf) |
| 96 | { |
| 97 | // Place for size. |
| 98 | put<int>(0); |
| 99 | |
| 100 | // Write message type. |
| 101 | put<int>(msgType); |
| 102 | } |
| 103 | |
| 104 | ~MessageWriter (void) |
| 105 | { |
| 106 | finalize(); |
| 107 | } |
| 108 | |
| 109 | void finalize (void) |
| 110 | { |
| 111 | DE_ASSERT(m_buf.size() >= MESSAGE_HEADER_SIZE); |
| 112 | |
| 113 | // Write actual size. |
| 114 | int size = hostToNetwork((int)m_buf.size()); |
| 115 | deMemcpy(&m_buf[0], &size, sizeof(int)); |
| 116 | } |
| 117 | |
| 118 | template <typename T> |
| 119 | void put (T value) |
| 120 | { |
| 121 | T netValue = hostToNetwork(value); |
| 122 | size_t curPos = m_buf.size(); |
| 123 | m_buf.resize(curPos + sizeof(T)); |
| 124 | deMemcpy(&m_buf[curPos], &netValue, sizeof(T)); |
| 125 | } |
| 126 | |
| 127 | private: |
| 128 | std::vector<deUint8>& m_buf; |
| 129 | }; |
| 130 | |
| 131 | template <> |
| 132 | void MessageWriter::put<const char*> (const char* value) |
| 133 | { |
| 134 | int curPos = (int)m_buf.size(); |
| 135 | int strLen = (int)strlen(value); |
| 136 | |
| 137 | m_buf.resize(curPos + strLen+1); |
| 138 | deMemcpy(&m_buf[curPos], &value[0], strLen+1); |
| 139 | } |
| 140 | |
| 141 | void Message::parseHeader (const deUint8* data, int dataSize, MessageType& type, int& size) |
| 142 | { |
| 143 | XS_CHECK_MSG(dataSize >= MESSAGE_HEADER_SIZE, "Incomplete header"); |
| 144 | MessageParser parser(data, dataSize); |
| 145 | size = (MessageType)parser.get<int>(); |
| 146 | type = (MessageType)parser.get<int>(); |
| 147 | } |
| 148 | |
| 149 | void Message::writeHeader (MessageType type, int messageSize, deUint8* dst, int bufSize) |
| 150 | { |
| 151 | XS_CHECK_MSG(bufSize >= MESSAGE_HEADER_SIZE, "Incomplete header"); |
| 152 | int netSize = hostToNetwork(messageSize); |
| 153 | int netType = hostToNetwork((int)type); |
| 154 | deMemcpy(dst+0, &netSize, sizeof(netSize)); |
| 155 | deMemcpy(dst+4, &netType, sizeof(netType)); |
| 156 | } |
| 157 | |
| 158 | void Message::writeNoData (vector<deUint8>& buf) const |
| 159 | { |
| 160 | MessageWriter writer(type, buf); |
| 161 | } |
| 162 | |
| 163 | HelloMessage::HelloMessage (const deUint8* data, int dataSize) |
| 164 | : Message(MESSAGETYPE_HELLO) |
| 165 | { |
| 166 | MessageParser parser(data, dataSize); |
| 167 | version = parser.get<int>(); |
| 168 | parser.assumEnd(); |
| 169 | } |
| 170 | |
| 171 | void HelloMessage::write (vector<deUint8>& buf) const |
| 172 | { |
| 173 | MessageWriter writer(type, buf); |
| 174 | writer.put(version); |
| 175 | } |
| 176 | |
| 177 | TestMessage::TestMessage (const deUint8* data, int dataSize) |
| 178 | : Message(MESSAGETYPE_TEST) |
| 179 | { |
| 180 | MessageParser parser(data, dataSize); |
| 181 | parser.getString(test); |
| 182 | parser.assumEnd(); |
| 183 | } |
| 184 | |
| 185 | void TestMessage::write (vector<deUint8>& buf) const |
| 186 | { |
| 187 | MessageWriter writer(type, buf); |
| 188 | writer.put(test.c_str()); |
| 189 | } |
| 190 | |
| 191 | ExecuteBinaryMessage::ExecuteBinaryMessage (const deUint8* data, int dataSize) |
| 192 | : Message(MESSAGETYPE_EXECUTE_BINARY) |
| 193 | { |
| 194 | MessageParser parser(data, dataSize); |
| 195 | parser.getString(name); |
| 196 | parser.getString(params); |
| 197 | parser.getString(workDir); |
| 198 | parser.getString(caseList); |
| 199 | parser.assumEnd(); |
| 200 | } |
| 201 | |
| 202 | void ExecuteBinaryMessage::write (vector<deUint8>& buf) const |
| 203 | { |
| 204 | MessageWriter writer(type, buf); |
| 205 | writer.put(name.c_str()); |
| 206 | writer.put(params.c_str()); |
| 207 | writer.put(workDir.c_str()); |
| 208 | writer.put(caseList.c_str()); |
| 209 | } |
| 210 | |
| 211 | ProcessLogDataMessage::ProcessLogDataMessage (const deUint8* data, int dataSize) |
| 212 | : Message(MESSAGETYPE_PROCESS_LOG_DATA) |
| 213 | { |
| 214 | MessageParser parser(data, dataSize); |
| 215 | parser.getString(logData); |
| 216 | parser.assumEnd(); |
| 217 | } |
| 218 | |
| 219 | void ProcessLogDataMessage::write (vector<deUint8>& buf) const |
| 220 | { |
| 221 | MessageWriter writer(type, buf); |
| 222 | writer.put(logData.c_str()); |
| 223 | } |
| 224 | |
| 225 | ProcessLaunchFailedMessage::ProcessLaunchFailedMessage (const deUint8* data, int dataSize) |
| 226 | : Message(MESSAGETYPE_PROCESS_LAUNCH_FAILED) |
| 227 | { |
| 228 | MessageParser parser(data, dataSize); |
| 229 | parser.getString(reason); |
| 230 | parser.assumEnd(); |
| 231 | } |
| 232 | |
| 233 | void ProcessLaunchFailedMessage::write (vector<deUint8>& buf) const |
| 234 | { |
| 235 | MessageWriter writer(type, buf); |
| 236 | writer.put(reason.c_str()); |
| 237 | } |
| 238 | |
| 239 | ProcessFinishedMessage::ProcessFinishedMessage (const deUint8* data, int dataSize) |
| 240 | : Message(MESSAGETYPE_PROCESS_FINISHED) |
| 241 | { |
| 242 | MessageParser parser(data, dataSize); |
| 243 | exitCode = parser.get<int>(); |
| 244 | parser.assumEnd(); |
| 245 | } |
| 246 | |
| 247 | void ProcessFinishedMessage::write (vector<deUint8>& buf) const |
| 248 | { |
| 249 | MessageWriter writer(type, buf); |
| 250 | writer.put(exitCode); |
| 251 | } |
| 252 | |
| 253 | InfoMessage::InfoMessage (const deUint8* data, int dataSize) |
| 254 | : Message(MESSAGETYPE_INFO) |
| 255 | { |
| 256 | MessageParser parser(data, dataSize); |
| 257 | parser.getString(info); |
| 258 | parser.assumEnd(); |
| 259 | } |
| 260 | |
| 261 | void InfoMessage::write (vector<deUint8>& buf) const |
| 262 | { |
| 263 | MessageWriter writer(type, buf); |
| 264 | writer.put(info.c_str()); |
| 265 | } |
| 266 | |
| 267 | } // xs |