Support large files in Downloads.

Telegram/SourceFiles/core/file_location.cpp

@@ -16,6 +16,7 @@ namespace Core {
 namespace {
 
 const auto kInMediaCacheLocation = u"*media_cache*"_q;
+constexpr auto kMaxFileSize = 4000 * int64(1024 * 1024);
 
 } // namespace
 
@@ -55,13 +56,13 @@ FileLocation::FileLocation(const QFileInfo &info) : fname(info.filePath()) {
 void FileLocation::resolveFromInfo(const QFileInfo &info) {
 	if (info.exists()) {
 		const auto s = info.size();
-		if (s > INT_MAX) {
+		if (s > kMaxFileSize) {
 			fname = QString();
 			_bookmark = nullptr;
 			size = 0;
 		} else {
 			modified = info.lastModified();
-			size = qint32(s);
+			size = s;
 		}
 	} else {
 		fname = QString();
@@ -88,12 +89,12 @@ bool FileLocation::check() const {
 	if (!f.isReadable()) return false;
 
 	quint64 s = f.size();
-	if (s > INT_MAX) {
+	if (s > kMaxFileSize) {
 		DEBUG_LOG(("File location check: Wrong size %1").arg(s));
 		return false;
 	}
 
-	if (qint32(s) != size) {
+	if (s != size) {
 		DEBUG_LOG(("File location check: Wrong size %1 when should be %2").arg(s).arg(size));
 		return false;
 	}

Telegram/SourceFiles/core/file_location.h

@@ -55,7 +55,7 @@ public:
 
 	QString fname;
 	QDateTime modified;
-	qint32 size;
+	qint64 size = 0;
 
 private:
 	void resolveFromInfo(const QFileInfo &info);

Telegram/SourceFiles/data/data_download_manager.cpp

@@ -39,7 +39,7 @@ namespace Data {
 namespace {
 
 constexpr auto kClearLoadingTimeout = 5 * crl::time(1000);
-constexpr auto kMaxFileSize = 2000 * 1024 * 1024;
+constexpr auto kMaxFileSize = 4000 * int64(1024 * 1024);
 constexpr auto kMaxResolvePerAttempt = 100;
 
 constexpr auto ByItem = [](const auto &entry) {
@@ -944,7 +944,7 @@ Fn<std::optional<QByteArray>()> DownloadManager::serializator(
 		const auto constant = sizeof(quint64) // download.objectId
 			+ sizeof(qint32) // download.type
 			+ sizeof(qint64) // started
-			+ sizeof(qint32) // size
+			+ sizeof(quint32) // size
 			+ sizeof(quint64) // itemId.peer
 			+ sizeof(qint64) // itemId.msg
 			+ sizeof(quint64); // peerAccessHash
@@ -963,7 +963,8 @@ Fn<std::optional<QByteArray>()> DownloadManager::serializator(
 				<< quint64(id.download.objectId)
 				<< qint32(id.download.type)
 				<< qint64(id.started)
-				<< qint32(id.size)
+				// FileSize: Right now any file size fits 32 bit.
+				<< quint32(id.size)
 				<< quint64(id.itemId.peer.value)
 				<< qint64(id.itemId.msg.bare)
 				<< quint64(id.peerAccessHash)
@@ -996,7 +997,8 @@ std::vector<DownloadedId> DownloadManager::deserialize(
 		auto downloadObjectId = quint64();
 		auto uncheckedDownloadType = qint32();
 		auto started = qint64();
-		auto size = qint32();
+		// FileSize: Right now any file size fits 32 bit.
+		auto size = quint32();
 		auto itemIdPeer = quint64();
 		auto itemIdMsg = qint64();
 		auto peerAccessHash = quint64();
@@ -1026,7 +1028,7 @@ std::vector<DownloadedId> DownloadManager::deserialize(
 			},
 			.started = started,
 			.path = path,
-			.size = size,
+			.size = int64(size),
 			.itemId = { PeerId(itemIdPeer), MsgId(itemIdMsg) },
 			.peerAccessHash = peerAccessHash,
 		});

Telegram/SourceFiles/storage/storage_account.cpp

@@ -730,12 +730,14 @@ void Account::readLocations() {
 		QByteArray bookmark;
 		Core::FileLocation loc;
 		quint32 legacyTypeField = 0;
+		quint32 size = 0;
 		locations.stream >> first >> second >> legacyTypeField >> loc.fname;
 		if (locations.version > 9013) {
 			locations.stream >> bookmark;
 		}
-		locations.stream >> loc.modified >> loc.size;
+		locations.stream >> loc.modified >> size;
 		loc.setBookmark(bookmark);
+		loc.size = int64(size);
 
 		if (!first && !second && !legacyTypeField && loc.fname.isEmpty() && !loc.size) { // end mark
 			endMarkFound = true;