Files
nearby/sharing/linux/app/backend.cc
T
2026-06-30 22:57:02 +05:30

516 lines
15 KiB
C++

#include "sharing/linux/app/backend.h"
#include <algorithm>
#include <functional>
#include <thread>
#include <utility>
#include <QMetaObject>
#include <QPointer>
#include <QUrl>
#include <sdbus-c++/sdbus-c++.h>
namespace {
QString ToQString(const std::string& value) {
return QString::fromStdString(value);
}
QString NormalizeLocalPath(const QString& path) {
const QUrl url(path);
if (url.isValid() && url.isLocalFile()) {
return url.toLocalFile();
}
return path;
}
double ProgressFraction(const std::optional<nearby::sharing::linux::app::Transfer>& transfer) {
if (!transfer.has_value()) {
return 0;
}
return std::clamp(transfer->progress / 100.0, 0.0, 1.0);
}
bool IsAwaitingLocalConfirmation(
const std::optional<nearby::sharing::linux::app::Transfer>& transfer) {
return transfer.has_value() &&
transfer->status == "kAwaitingLocalConfirmation";
}
QString DeviceNameFor(
const std::optional<nearby::sharing::linux::app::ShareTarget>& target) {
if (!target.has_value() || target->device_name.empty()) {
return QStringLiteral("Unknown device");
}
return ToQString(target->device_name);
}
} // namespace
ShareTargetModel::ShareTargetModel(QObject* parent)
: QAbstractListModel(parent) {}
int ShareTargetModel::rowCount(const QModelIndex& parent) const {
if (parent.isValid()) {
return 0;
}
return static_cast<int>(targets_.size());
}
QVariant ShareTargetModel::data(const QModelIndex& index, int role) const {
if (!index.isValid() || index.row() < 0 ||
index.row() >= static_cast<int>(targets_.size())) {
return {};
}
const ShareTarget& target = targets_[index.row()];
switch (role) {
case IdRole:
return QVariant::fromValue<qint64>(target.id);
case DeviceNameRole:
return ToQString(target.device_name);
case TypeRole:
return target.type;
case IsIncomingRole:
return target.is_incoming;
case IsKnownRole:
return target.is_known;
case DeviceIdRole:
return ToQString(target.device_id);
case ForSelfShareRole:
return target.for_self_share;
case VendorIdRole:
return target.vendor_id;
case ReceiveDisabledRole:
return target.receive_disabled;
default:
return {};
}
}
QHash<int, QByteArray> ShareTargetModel::roleNames() const {
return {
{IdRole, "targetId"},
{DeviceNameRole, "deviceName"},
{TypeRole, "type"},
{IsIncomingRole, "isIncoming"},
{IsKnownRole, "isKnown"},
{DeviceIdRole, "deviceId"},
{ForSelfShareRole, "forSelfShare"},
{VendorIdRole, "vendorId"},
{ReceiveDisabledRole, "receiveDisabled"},
};
}
void ShareTargetModel::ApplyTarget(const ShareTarget& target) {
const int row = IndexOf(target.id);
if (row < 0) {
const int insert_row = static_cast<int>(targets_.size());
beginInsertRows(QModelIndex(), insert_row, insert_row);
targets_.push_back(target);
endInsertRows();
return;
}
targets_[row] = target;
const QModelIndex changed_index = index(row);
emit dataChanged(changed_index, changed_index,
{IdRole, DeviceNameRole, TypeRole, IsIncomingRole,
IsKnownRole, DeviceIdRole, ForSelfShareRole, VendorIdRole,
ReceiveDisabledRole});
}
void ShareTargetModel::RemoveTarget(int64_t target_id) {
const int row = IndexOf(target_id);
if (row < 0) {
return;
}
beginRemoveRows(QModelIndex(), row, row);
targets_.erase(targets_.begin() + row);
endRemoveRows();
}
void ShareTargetModel::ResetTargets(const std::vector<ShareTarget>& targets) {
beginResetModel();
targets_ = targets;
endResetModel();
}
std::optional<ShareTargetModel::ShareTarget> ShareTargetModel::FindTarget(
int64_t target_id) const {
const int row = IndexOf(target_id);
if (row < 0) {
return std::nullopt;
}
return targets_[row];
}
int ShareTargetModel::IndexOf(int64_t target_id) const {
for (int i = 0; i < static_cast<int>(targets_.size()); ++i) {
if (targets_[i].id == target_id) {
return i;
}
}
return -1;
}
ShareTransferModel::ShareTransferModel(QObject* parent)
: QAbstractListModel(parent) {}
int ShareTransferModel::rowCount(const QModelIndex& parent) const {
if (parent.isValid()) {
return 0;
}
return static_cast<int>(transfers_.size());
}
QVariant ShareTransferModel::data(const QModelIndex& index, int role) const {
if (!index.isValid() || index.row() < 0 ||
index.row() >= static_cast<int>(transfers_.size())) {
return {};
}
return DataForRow(transfers_[index.row()], role);
}
QHash<int, QByteArray> ShareTransferModel::roleNames() const {
return {
{IdRole, "transferId"},
{DirectionRole, "direction"},
{DeviceNameRole, "deviceName"},
{TypeRole, "type"},
{StatusRole, "status"},
{ProgressRole, "progress"},
{TransferredBytesRole, "transferredBytes"},
{TotalBytesRole, "totalBytes"},
{TransferSpeedRole, "transferSpeed"},
{EstimatedTimeRemainingRole, "estimatedTimeRemaining"},
{TotalAttachmentsCountRole, "totalAttachmentsCount"},
{TransferredAttachmentsCountRole, "transferredAttachmentsCount"},
{IsFinalStatusRole, "isFinalStatus"},
{HasTargetRole, "hasTarget"},
{HasTransferRole, "hasTransfer"},
{AwaitingLocalConfirmationRole, "awaitingLocalConfirmation"},
{LocalPathRole, "localPath"},
};
}
void ShareTransferModel::ApplyTarget(const ShareTarget& target) {
const int row = IndexOf(target.id);
if (row < 0) {
return;
}
transfers_[row].target = target;
EmitRowChanged(row);
}
void ShareTransferModel::ApplyTransfer(const QString& direction,
const ShareTarget& target,
const Transfer& transfer) {
int row = IndexOf(target.id);
if (row < 0) {
row = static_cast<int>(transfers_.size());
beginInsertRows(QModelIndex(), row, row);
transfers_.push_back(Row{target.id, direction, target, transfer, {}});
endInsertRows();
return;
}
transfers_[row].direction = direction;
transfers_[row].target = target;
transfers_[row].transfer = transfer;
EmitRowChanged(row);
}
void ShareTransferModel::PrepareOutgoingTransfer(
int64_t target_id, const QString& local_path,
const std::optional<ShareTarget>& target) {
int row = IndexOf(target_id);
if (row < 0) {
row = static_cast<int>(transfers_.size());
beginInsertRows(QModelIndex(), row, row);
Row transfer;
transfer.id = target_id;
transfer.direction = QStringLiteral("send");
transfer.target = target;
transfer.local_path = local_path;
transfers_.push_back(std::move(transfer));
endInsertRows();
return;
}
transfers_[row].direction = QStringLiteral("send");
transfers_[row].target = target;
transfers_[row].local_path = local_path;
EmitRowChanged(row);
}
void ShareTransferModel::RemoveTransfer(int64_t target_id) {
const int row = IndexOf(target_id);
if (row < 0) {
return;
}
beginRemoveRows(QModelIndex(), row, row);
transfers_.erase(transfers_.begin() + row);
endRemoveRows();
}
int ShareTransferModel::IndexOf(int64_t target_id) const {
for (int i = 0; i < static_cast<int>(transfers_.size()); ++i) {
if (transfers_[i].id == target_id) {
return i;
}
}
return -1;
}
QVariant ShareTransferModel::DataForRow(const Row& row, int role) const {
const Transfer empty_transfer;
const Transfer& transfer = row.transfer.value_or(empty_transfer);
switch (role) {
case IdRole:
return QVariant::fromValue<qint64>(row.id);
case DirectionRole:
return row.direction;
case DeviceNameRole:
return DeviceNameFor(row.target);
case TypeRole:
return row.target.has_value() ? row.target->type : 0;
case StatusRole:
if (row.transfer.has_value()) {
return ToQString(transfer.status);
}
return row.direction == QStringLiteral("send")
? QStringLiteral("kConnecting")
: QStringLiteral("kUnknown");
case ProgressRole:
return ProgressFraction(row.transfer);
case TransferredBytesRole:
return QVariant::fromValue<qint64>(transfer.transferred_bytes);
case TotalBytesRole:
return QVariant::fromValue<qint64>(transfer.total_bytes);
case TransferSpeedRole:
return QVariant::fromValue<qint64>(transfer.transfer_speed);
case EstimatedTimeRemainingRole:
return QVariant::fromValue<qint64>(transfer.estimated_time_remaining);
case TotalAttachmentsCountRole:
return transfer.total_attachments_count;
case TransferredAttachmentsCountRole:
return transfer.transferred_attachments_count;
case IsFinalStatusRole:
return transfer.is_final_status;
case HasTargetRole:
return row.target.has_value();
case HasTransferRole:
return row.transfer.has_value();
case AwaitingLocalConfirmationRole:
return IsAwaitingLocalConfirmation(row.transfer);
case LocalPathRole:
return row.local_path;
default:
return {};
}
}
void ShareTransferModel::EmitRowChanged(int row) {
const QModelIndex changed_index = index(row);
emit dataChanged(changed_index, changed_index,
{IdRole, DirectionRole, DeviceNameRole, TypeRole,
StatusRole, ProgressRole, TransferredBytesRole,
TotalBytesRole, TransferSpeedRole,
EstimatedTimeRemainingRole, TotalAttachmentsCountRole,
TransferredAttachmentsCountRole, IsFinalStatusRole,
HasTargetRole, HasTransferRole,
AwaitingLocalConfirmationRole, LocalPathRole});
}
Backend::Backend(QObject* parent)
: QObject(parent), targets_(this), transfers_(this) {
try {
client_ = std::make_unique<Client>(this);
SetStatusText(QStringLiteral("Connected to nearby sharing daemon"));
} catch (const sdbus::Error& error) {
SetStatusText(QStringLiteral("D-Bus connection failed: %1")
.arg(QString::fromStdString(error.getMessage())));
}
}
Backend::~Backend() = default;
void Backend::startReceive() {
RunCommand(QStringLiteral("Start receive"),
[this]() { return client_->StartReceive(); });
}
void Backend::stopReceive() {
RunCommand(QStringLiteral("Stop receive"),
[this]() { return client_->StopReceive(); });
}
void Backend::startDiscovery() {
RunCommand(QStringLiteral("Start discovery"),
[this]() { return client_->StartDiscovery(); });
}
void Backend::stopDiscovery() {
RunCommand(QStringLiteral("Stop discovery"),
[this]() { return client_->StopDiscovery(); });
}
void Backend::sendFile(qint64 share_target_id, const QString& path) {
const QString local_path = NormalizeLocalPath(path);
RunCommand(QStringLiteral("Send file"), [this, share_target_id, local_path]() {
return client_->SendFile(share_target_id, local_path.toStdString());
});
}
void Backend::prepareOutgoingTransfer(qint64 share_target_id,
const QString& path) {
transfers_.PrepareOutgoingTransfer(share_target_id, NormalizeLocalPath(path),
targets_.FindTarget(share_target_id));
}
void Backend::accept(qint64 share_target_id) {
RunCommand(QStringLiteral("Accept transfer"), [this, share_target_id]() {
return client_->Accept(share_target_id);
});
}
void Backend::reject(qint64 share_target_id) {
RunCommand(QStringLiteral("Reject transfer"), [this, share_target_id]() {
return client_->Reject(share_target_id);
});
}
void Backend::cancel(qint64 share_target_id) {
RunCommand(QStringLiteral("Cancel transfer"), [this, share_target_id]() {
return client_->Cancel(share_target_id);
});
}
void Backend::OnTargetDiscovered(const ShareTarget& target) {
QMetaObject::invokeMethod(
this, [this, target]() { ApplyTarget(target); }, Qt::QueuedConnection);
}
void Backend::OnTargetUpdated(const ShareTarget& target) {
QMetaObject::invokeMethod(
this, [this, target]() { ApplyTarget(target); }, Qt::QueuedConnection);
}
void Backend::OnTargetLost(const ShareTarget& target) {
QMetaObject::invokeMethod(
this, [this, target]() { RemoveTarget(target); }, Qt::QueuedConnection);
}
void Backend::OnIncomingTransfer(const std::string& direction,
const ShareTarget& target,
const Transfer& transfer) {
QMetaObject::invokeMethod(
this,
[this, direction, target, transfer]() {
ApplyTarget(target);
transfers_.ApplyTransfer(ToQString(direction), target, transfer);
emit incomingTransfer(target.id, ToQString(target.device_name),
ToQString(transfer.status));
},
Qt::QueuedConnection);
}
void Backend::OnTransferUpdate(const std::string& direction,
const ShareTarget& target,
const Transfer& transfer) {
QMetaObject::invokeMethod(
this,
[this, direction, target, transfer]() {
ApplyTarget(target);
transfers_.ApplyTransfer(ToQString(direction), target, transfer);
emit transferUpdate(target.id, ToQString(target.device_name),
ToQString(transfer.status), transfer.progress);
},
Qt::QueuedConnection);
}
void Backend::OnStatusChanged(const Status& status) {
QMetaObject::invokeMethod(
this, [this, status]() { ApplyStatus(status); }, Qt::QueuedConnection);
}
void Backend::ApplyTarget(const ShareTarget& target) {
targets_.ApplyTarget(target);
transfers_.ApplyTarget(target);
}
void Backend::RemoveTarget(const ShareTarget& target) {
targets_.RemoveTarget(target.id);
}
void Backend::ApplyStatus(const Status& status) {
status_ = status;
targets_.ResetTargets(status.targets);
emit statusChanged();
}
void Backend::ApplyCommandResult(const QString& command,
const std::tuple<bool, std::string>& result) {
const auto& [ok, message] = result;
const QString detail =
message.empty() ? (ok ? QStringLiteral("ok") : QStringLiteral("failed"))
: ToQString(message);
SetStatusText(QStringLiteral("%1: %2").arg(command, detail));
}
void Backend::RunCommand(
const QString& command,
const std::function<std::tuple<bool, std::string>()>& operation) {
if (!client_) {
SetStatusText(QStringLiteral("%1 failed: not connected").arg(command));
return;
}
QPointer<Backend> backend(this);
std::thread([backend, command, operation]() {
try {
auto result = operation();
if (!backend) {
return;
}
QMetaObject::invokeMethod(
backend,
[backend, command, result = std::move(result)]() {
if (!backend) {
return;
}
backend->ApplyCommandResult(command, result);
},
Qt::QueuedConnection);
} catch (const sdbus::Error& error) {
const QString message = QStringLiteral("%1 failed: %2")
.arg(command, QString::fromStdString(
error.getMessage()));
if (!backend) {
return;
}
QMetaObject::invokeMethod(
backend,
[backend, message]() {
if (!backend) {
return;
}
backend->SetStatusText(message);
},
Qt::QueuedConnection);
}
}).detach();
}
void Backend::SetStatusText(const QString& text) {
if (status_text_ == text) {
return;
}
status_text_ = text;
emit statusTextChanged();
}