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UI: ControlWorker: Refactor data header handling.

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This commit is contained in:
Nodir Temirkhodjaev 2021-04-05 10:59:33 +03:00
parent cc6ef0909b
commit 4c45410cb0
1 changed files with 33 additions and 14 deletions
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47
src/ui/control/controlworker.cpp
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@ -6,7 +6,23 @@
namespace {
constexpr int commandMaxArgs = 7;
constexpr int commandArgMaxSize = 256;
constexpr int commandArgMaxSize = 4 * 1024;
constexpr int dataMaxSize = 4 * 1024 * 1024;
struct DataHeader
{
DataHeader(Control::Command command = Control::CommandNone, int dataSize = 0) :
m_command(command), m_dataSize(dataSize)
{
}
Control::Command command() const { return static_cast<Control::Command>(m_command); }
int dataSize() const { return m_dataSize; }
private:
quint32 m_command : 8;
quint32 m_dataSize : 24;
};
}
@ -89,18 +105,21 @@ bool ControlWorker::readRequest()
void ControlWorker::writeDataHeader(Control::Command command, int dataSize)
{
const quint32 dataHeader = (quint32(command) << 24) | dataSize;
socket()->write((const char *) &dataHeader, sizeof(quint32));
DataHeader dataHeader(command, dataSize);
socket()->write((const char *) &dataHeader, sizeof(DataHeader));
}
bool ControlWorker::readDataHeader(Control::Command &command, int &dataSize)
{
quint32 dataHeader = 0;
if (socket()->read((char *) &dataHeader, sizeof(quint32)) != sizeof(quint32))
DataHeader dataHeader;
if (socket()->read((char *) &dataHeader, sizeof(DataHeader)) != sizeof(DataHeader))
return false;
command = static_cast<Control::Command>(dataHeader >> 24);
dataSize = dataHeader & 0xFFFFFF;
command = dataHeader.command();
dataSize = dataHeader.dataSize();
if (dataSize > dataMaxSize)
return false;
return true;
}
@ -125,11 +144,11 @@ bool ControlWorker::buildArgsData(QByteArray &data, const QStringList &args)
#endif
);
const int argsSize = args.size();
if (argsSize > commandMaxArgs)
const int argsCount = args.count();
if (argsCount > commandMaxArgs)
return false;
stream << qint8(argsSize);
stream << qint8(argsCount);
for (const auto &arg : args) {
if (arg.size() > commandArgMaxSize)
@ -145,12 +164,12 @@ bool ControlWorker::parseArgsData(const QByteArray &data, QStringList &args)
{
QDataStream stream(data);
qint8 argsSize;
stream >> argsSize;
if (argsSize > commandMaxArgs)
qint8 argsCount;
stream >> argsCount;
if (argsCount > commandMaxArgs)
return false;
while (--argsSize >= 0) {
while (--argsCount >= 0) {
QString arg;
stream >> arg;
if (arg.size() > commandArgMaxSize)