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/*-------------------------------------------------------------------------
* drawElements Quality Program Execution Server
* ---------------------------------------------
*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*//*!
* \file
* \brief Execution Server Protocol.
*//*--------------------------------------------------------------------*/
#include "xsProtocol.hpp"
using std::string;
using std::vector;
namespace xs
{
inline deUint32 swapEndianess (deUint32 value)
{
deUint32 b0 = (value >> 0) & 0xFF;
deUint32 b1 = (value >> 8) & 0xFF;
deUint32 b2 = (value >> 16) & 0xFF;
deUint32 b3 = (value >> 24) & 0xFF;
return (b0 << 24) | (b1 << 16) | (b2 << 8) | b3;
}
template <typename T> T networkToHost (T value);
template <typename T> T hostToNetwork (T value);
template <> int networkToHost (int value) { return (int)swapEndianess((deUint32)value); }
template <> int hostToNetwork (int value) { return (int)swapEndianess((deUint32)value); }
class MessageParser
{
public:
MessageParser (const deUint8* data, int dataSize)
: m_data (data)
, m_size (dataSize)
, m_pos (0)
{
}
template <typename T>
T get (void)
{
XS_CHECK_MSG(m_pos + (int)sizeof(T) <= m_size, "Invalid payload size");
T netValue;
deMemcpy(&netValue, &m_data[m_pos], sizeof(T));
m_pos += sizeof(T);
return networkToHost(netValue);
}
void getString (std::string& dst)
{
// \todo [2011-09-30 pyry] We should really send a size parameter instead.
while (m_data[m_pos] != 0)
{
dst += (char)m_data[m_pos++];
XS_CHECK_MSG(m_pos < m_size, "Unterminated string payload");
}
m_pos += 1;
}
void assumEnd (void)
{
if (m_pos != m_size)
XS_FAIL("Invalid payload size");
}
private:
const deUint8* m_data;
int m_size;
int m_pos;
};
class MessageWriter
{
public:
MessageWriter (MessageType msgType, std::vector<deUint8>& buf)
: m_buf(buf)
{
// Place for size.
put<int>(0);
// Write message type.
put<int>(msgType);
}
~MessageWriter (void)
{
finalize();
}
void finalize (void)
{
DE_ASSERT(m_buf.size() >= MESSAGE_HEADER_SIZE);
// Write actual size.
int size = hostToNetwork((int)m_buf.size());
deMemcpy(&m_buf[0], &size, sizeof(int));
}
template <typename T>
void put (T value)
{
T netValue = hostToNetwork(value);
size_t curPos = m_buf.size();
m_buf.resize(curPos + sizeof(T));
deMemcpy(&m_buf[curPos], &netValue, sizeof(T));
}
private:
std::vector<deUint8>& m_buf;
};
template <>
void MessageWriter::put<const char*> (const char* value)
{
int curPos = (int)m_buf.size();
int strLen = (int)strlen(value);
m_buf.resize(curPos + strLen+1);
deMemcpy(&m_buf[curPos], &value[0], strLen+1);
}
void Message::parseHeader (const deUint8* data, int dataSize, MessageType& type, int& size)
{
XS_CHECK_MSG(dataSize >= MESSAGE_HEADER_SIZE, "Incomplete header");
MessageParser parser(data, dataSize);
size = (MessageType)parser.get<int>();
type = (MessageType)parser.get<int>();
}
void Message::writeHeader (MessageType type, int messageSize, deUint8* dst, int bufSize)
{
XS_CHECK_MSG(bufSize >= MESSAGE_HEADER_SIZE, "Incomplete header");
int netSize = hostToNetwork(messageSize);
int netType = hostToNetwork((int)type);
deMemcpy(dst+0, &netSize, sizeof(netSize));
deMemcpy(dst+4, &netType, sizeof(netType));
}
void Message::writeNoData (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
}
HelloMessage::HelloMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_HELLO)
{
MessageParser parser(data, dataSize);
version = parser.get<int>();
parser.assumEnd();
}
void HelloMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(version);
}
TestMessage::TestMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_TEST)
{
MessageParser parser(data, dataSize);
parser.getString(test);
parser.assumEnd();
}
void TestMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(test.c_str());
}
ExecuteBinaryMessage::ExecuteBinaryMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_EXECUTE_BINARY)
{
MessageParser parser(data, dataSize);
parser.getString(name);
parser.getString(params);
parser.getString(workDir);
parser.getString(caseList);
parser.assumEnd();
}
void ExecuteBinaryMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(name.c_str());
writer.put(params.c_str());
writer.put(workDir.c_str());
writer.put(caseList.c_str());
}
ProcessLogDataMessage::ProcessLogDataMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_PROCESS_LOG_DATA)
{
MessageParser parser(data, dataSize);
parser.getString(logData);
parser.assumEnd();
}
void ProcessLogDataMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(logData.c_str());
}
ProcessLaunchFailedMessage::ProcessLaunchFailedMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_PROCESS_LAUNCH_FAILED)
{
MessageParser parser(data, dataSize);
parser.getString(reason);
parser.assumEnd();
}
void ProcessLaunchFailedMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(reason.c_str());
}
ProcessFinishedMessage::ProcessFinishedMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_PROCESS_FINISHED)
{
MessageParser parser(data, dataSize);
exitCode = parser.get<int>();
parser.assumEnd();
}
void ProcessFinishedMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(exitCode);
}
InfoMessage::InfoMessage (const deUint8* data, int dataSize)
: Message(MESSAGETYPE_INFO)
{
MessageParser parser(data, dataSize);
parser.getString(info);
parser.assumEnd();
}
void InfoMessage::write (vector<deUint8>& buf) const
{
MessageWriter writer(type, buf);
writer.put(info.c_str());
}
} // xs