Kevin Rocard | 93250d1 | 2012-07-19 17:48:30 +0200 | [diff] [blame] | 1 | /* |
David Wagner | b76c9d6 | 2014-02-05 18:30:24 +0100 | [diff] [blame^] | 2 | * Copyright (c) 2011-2014, Intel Corporation |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without modification, |
| 6 | * are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, this |
| 9 | * list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 12 | * this list of conditions and the following disclaimer in the documentation and/or |
| 13 | * other materials provided with the distribution. |
| 14 | * |
| 15 | * 3. Neither the name of the copyright holder nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software without |
| 17 | * specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 21 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 22 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR |
| 23 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 24 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 25 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 26 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 28 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Patrick Benavoli | 68a9128 | 2011-08-31 11:23:23 +0200 | [diff] [blame] | 29 | */ |
| 30 | #include "Message.h" |
| 31 | #include <assert.h> |
| 32 | #include "Socket.h" |
| 33 | #include "RemoteProcessorProtocol.h" |
| 34 | #include <string.h> |
| 35 | #include <assert.h> |
| 36 | |
| 37 | CMessage::CMessage(uint8_t ucMsgId) : _ucMsgId(ucMsgId), _pucData(NULL), _uiDataSize(0), _uiIndex(0) |
| 38 | { |
| 39 | } |
| 40 | |
Patrick Benavoli | 930075c | 2011-08-31 17:09:06 +0200 | [diff] [blame] | 41 | CMessage::CMessage() : _ucMsgId((uint8_t)-1), _pucData(NULL), _uiDataSize(0), _uiIndex(0) |
Patrick Benavoli | 68a9128 | 2011-08-31 11:23:23 +0200 | [diff] [blame] | 42 | { |
| 43 | } |
| 44 | |
| 45 | CMessage::~CMessage() |
| 46 | { |
| 47 | delete [] _pucData; |
| 48 | } |
| 49 | |
| 50 | // Msg Id |
| 51 | uint8_t CMessage::getMsgId() const |
| 52 | { |
| 53 | return _ucMsgId; |
| 54 | } |
| 55 | |
| 56 | // Data |
| 57 | void CMessage::writeData(const void* pvData, uint32_t uiSize) |
| 58 | { |
| 59 | assert(_uiIndex + uiSize <= _uiDataSize); |
| 60 | |
| 61 | // Copy |
| 62 | memcpy(&_pucData[_uiIndex], pvData, uiSize); |
| 63 | |
| 64 | // Index |
| 65 | _uiIndex += uiSize; |
| 66 | } |
| 67 | |
| 68 | void CMessage::readData(void* pvData, uint32_t uiSize) |
| 69 | { |
| 70 | assert(_uiIndex + uiSize <= _uiDataSize); |
| 71 | |
| 72 | // Copy |
| 73 | memcpy(pvData, &_pucData[_uiIndex], uiSize); |
| 74 | |
| 75 | // Index |
| 76 | _uiIndex += uiSize; |
| 77 | } |
| 78 | |
| 79 | void CMessage::writeString(const string& strData) |
| 80 | { |
| 81 | // Size |
| 82 | uint32_t uiSize = strData.length(); |
| 83 | |
| 84 | writeData(&uiSize, sizeof(uiSize)); |
| 85 | |
| 86 | // Content |
| 87 | writeData(strData.c_str(), uiSize); |
| 88 | } |
| 89 | |
| 90 | void CMessage::readString(string& strData) |
| 91 | { |
| 92 | // Size |
| 93 | uint32_t uiSize; |
| 94 | |
| 95 | readData(&uiSize, sizeof(uiSize)); |
| 96 | |
| 97 | // Data |
| 98 | char* pcData = new char[uiSize + 1]; |
| 99 | |
| 100 | // Content |
| 101 | readData(pcData, uiSize); |
| 102 | |
| 103 | // NULL-terminate string |
| 104 | pcData[uiSize] = '\0'; |
| 105 | |
| 106 | // Output |
| 107 | strData = pcData; |
| 108 | |
| 109 | // Delete |
| 110 | delete [] pcData; |
| 111 | } |
| 112 | |
| 113 | uint32_t CMessage::getStringSize(const string& strData) const |
| 114 | { |
| 115 | // Return string length plus room to store its length |
| 116 | return strData.length() + sizeof(uint32_t); |
| 117 | } |
| 118 | |
| 119 | // Remaining data size |
| 120 | uint32_t CMessage::getRemainingDataSize() const |
| 121 | { |
| 122 | return _uiDataSize - _uiIndex; |
| 123 | } |
| 124 | |
| 125 | // Send/Receive |
| 126 | bool CMessage::serialize(CSocket* pSocket, bool bOut) |
| 127 | { |
| 128 | if (bOut) { |
| 129 | |
| 130 | // Make room for data to send |
| 131 | allocateData(getDataSize()); |
| 132 | |
| 133 | // Get data from derived |
| 134 | fillDataToSend(); |
| 135 | |
| 136 | // Finished providing data? |
| 137 | assert(_uiIndex == _uiDataSize); |
| 138 | |
| 139 | // First send sync word |
| 140 | uint16_t uiSyncWord = SYNC_WORD; |
| 141 | |
| 142 | if (!pSocket->write(&uiSyncWord, sizeof(uiSyncWord))) { |
| 143 | |
| 144 | return false; |
| 145 | } |
| 146 | |
| 147 | // Size |
| 148 | uint32_t uiSize = sizeof(_ucMsgId) + _uiDataSize; |
| 149 | |
| 150 | if (!pSocket->write(&uiSize, sizeof(uiSize))) { |
| 151 | |
| 152 | return false; |
| 153 | } |
| 154 | |
| 155 | // Msg Id |
| 156 | if (!pSocket->write(&_ucMsgId, sizeof(_ucMsgId))) { |
| 157 | |
| 158 | return false; |
| 159 | } |
| 160 | |
| 161 | // Data |
| 162 | if (!pSocket->write(_pucData, _uiDataSize)) { |
| 163 | |
| 164 | return false; |
| 165 | } |
| 166 | |
| 167 | // Checksum |
| 168 | uint8_t ucChecksum = computeChecksum(); |
| 169 | |
| 170 | if (!pSocket->write(&ucChecksum, sizeof(ucChecksum))) { |
| 171 | |
| 172 | return false; |
| 173 | } |
| 174 | |
| 175 | } else { |
| 176 | // First read sync word |
| 177 | uint16_t uiSyncWord; |
| 178 | |
| 179 | if (!pSocket->read(&uiSyncWord, sizeof(uiSyncWord))) { |
| 180 | |
| 181 | return false; |
| 182 | } |
| 183 | |
| 184 | // Check Sync word |
| 185 | if (uiSyncWord != SYNC_WORD) { |
| 186 | |
| 187 | return false; |
| 188 | } |
| 189 | |
| 190 | // Size |
| 191 | uint32_t uiSize; |
| 192 | |
| 193 | if (!pSocket->read(&uiSize, sizeof(uiSize))) { |
| 194 | |
| 195 | return false; |
| 196 | } |
| 197 | |
| 198 | // Msg Id |
| 199 | if (!pSocket->read(&_ucMsgId, sizeof(_ucMsgId))) { |
| 200 | |
| 201 | return false; |
| 202 | } |
| 203 | |
| 204 | // Data |
| 205 | |
| 206 | // Allocate |
| 207 | allocateData(uiSize - sizeof(_ucMsgId)); |
| 208 | |
| 209 | // Data receive |
| 210 | if (!pSocket->read(_pucData, _uiDataSize)) { |
| 211 | |
| 212 | return false; |
| 213 | } |
| 214 | |
| 215 | // Checksum |
| 216 | uint8_t ucChecksum; |
| 217 | |
| 218 | if (!pSocket->read(&ucChecksum, sizeof(ucChecksum))) { |
| 219 | |
| 220 | return false; |
| 221 | } |
| 222 | // Compare |
| 223 | if (ucChecksum != computeChecksum()) { |
| 224 | |
| 225 | return false; |
| 226 | } |
| 227 | |
| 228 | // Collect data in derived |
| 229 | collectReceivedData(); |
| 230 | } |
| 231 | |
| 232 | return true; |
| 233 | } |
| 234 | |
| 235 | // Checksum |
| 236 | uint8_t CMessage::computeChecksum() const |
| 237 | { |
Patrick Benavoli | 1387bda | 2011-08-31 11:23:24 +0200 | [diff] [blame] | 238 | uint8_t uiChecksum = _ucMsgId; |
Patrick Benavoli | 68a9128 | 2011-08-31 11:23:23 +0200 | [diff] [blame] | 239 | |
| 240 | uint32_t uiIndex; |
| 241 | |
| 242 | for (uiIndex = 0; uiIndex < _uiDataSize; uiIndex++) { |
| 243 | |
| 244 | uiChecksum += _pucData[uiIndex]; |
| 245 | } |
| 246 | |
| 247 | return uiChecksum; |
| 248 | } |
| 249 | |
| 250 | // Data allocation |
| 251 | void CMessage::allocateData(uint32_t uiSize) |
| 252 | { |
| 253 | // Remove previous one |
| 254 | if (_pucData) { |
| 255 | |
| 256 | delete [] _pucData; |
| 257 | } |
| 258 | // Do allocate |
| 259 | _pucData = new uint8_t[uiSize]; |
| 260 | |
| 261 | // Record size |
| 262 | _uiDataSize = uiSize; |
| 263 | |
| 264 | // Reset Index |
| 265 | _uiIndex = 0; |
| 266 | } |