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