134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "core/file_location.h"
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#include "platform/platform_file_bookmark.h"
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#include "logs.h"
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#include <QtCore/QFileInfo>
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namespace Core {
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namespace {
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const auto kInMediaCacheLocation = u"*media_cache*"_q;
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constexpr auto kMaxFileSize = 4000 * int64(1024 * 1024);
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} // namespace
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ReadAccessEnabler::ReadAccessEnabler(const Platform::FileBookmark *bookmark)
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: _bookmark(bookmark)
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, _failed(_bookmark ? !_bookmark->enable() : false) {
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}
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ReadAccessEnabler::ReadAccessEnabler(
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const std::shared_ptr<Platform::FileBookmark> &bookmark)
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: _bookmark(bookmark.get())
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, _failed(_bookmark ? !_bookmark->enable() : false) {
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}
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ReadAccessEnabler::~ReadAccessEnabler() {
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if (_bookmark && !_failed) _bookmark->disable();
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}
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FileLocation::FileLocation(const QString &name) : fname(name) {
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if (fname.isEmpty() || fname == kInMediaCacheLocation) {
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size = 0;
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} else {
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setBookmark(Platform::PathBookmark(name));
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resolveFromInfo(QFileInfo(name));
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}
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}
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FileLocation::FileLocation(const QFileInfo &info) : fname(info.filePath()) {
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if (fname.isEmpty()) {
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size = 0;
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} else {
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setBookmark(Platform::PathBookmark(fname));
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resolveFromInfo(info);
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}
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}
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void FileLocation::resolveFromInfo(const QFileInfo &info) {
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if (info.exists()) {
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const auto s = info.size();
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if (s > kMaxFileSize) {
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fname = QString();
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_bookmark = nullptr;
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size = 0;
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} else {
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modified = info.lastModified();
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size = s;
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}
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} else {
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fname = QString();
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_bookmark = nullptr;
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size = 0;
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}
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}
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FileLocation FileLocation::InMediaCacheLocation() {
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return FileLocation(kInMediaCacheLocation);
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}
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bool FileLocation::check() const {
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if (fname.isEmpty() || fname == kInMediaCacheLocation) {
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return false;
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}
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ReadAccessEnabler enabler(_bookmark);
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if (enabler.failed()) {
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const_cast<FileLocation*>(this)->_bookmark = nullptr;
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}
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QFileInfo f(name());
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if (!f.isReadable()) return false;
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quint64 s = f.size();
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if (s > kMaxFileSize) {
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DEBUG_LOG(("File location check: Wrong size %1").arg(s));
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return false;
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}
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if (s != size) {
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DEBUG_LOG(("File location check: Wrong size %1 when should be %2").arg(s).arg(size));
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return false;
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}
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auto realModified = f.lastModified();
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if (realModified != modified) {
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DEBUG_LOG(("File location check: Wrong last modified time %1 when should be %2").arg(realModified.toMSecsSinceEpoch()).arg(modified.toMSecsSinceEpoch()));
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return false;
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}
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return true;
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}
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const QString &FileLocation::name() const {
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return _bookmark ? _bookmark->name(fname) : fname;
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}
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QByteArray FileLocation::bookmark() const {
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return _bookmark ? _bookmark->bookmark() : QByteArray();
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}
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bool FileLocation::inMediaCache() const {
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return (fname == kInMediaCacheLocation);
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}
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void FileLocation::setBookmark(const QByteArray &bm) {
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_bookmark.reset(bm.isEmpty() ? nullptr : new Platform::FileBookmark(bm));
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}
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bool FileLocation::accessEnable() const {
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return isEmpty() ? false : (_bookmark ? _bookmark->enable() : true);
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}
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void FileLocation::accessDisable() const {
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return _bookmark ? _bookmark->disable() : (void)0;
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}
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} // namespace Core
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