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Ensure file deletion only after read

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This commit is contained in:
Vishnu Mohandas 2020-09-26 01:55:03 +05:30
parent 37b7eb1601
commit 9f6cfebcb1
1 changed files with 11 additions and 9 deletions
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20
lib/utils/file_util.dart
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@ -157,24 +157,26 @@ Future<io.File> _downloadAndDecrypt(File file, BaseCacheManager cacheManager,
)
.then((_) async {
var attributes = ChaChaAttributes(
EncryptionAttribute(base64: file.fileDecryptionParams.header),
EncryptionAttribute(
bytes: await CryptoUtil.decrypt(
file.fileDecryptionParams.encryptedKey,
Configuration.instance.getBase64EncodedKey(),
file.fileDecryptionParams.nonce,
)));
EncryptionAttribute(
bytes: await CryptoUtil.decrypt(
file.fileDecryptionParams.encryptedKey,
Configuration.instance.getBase64EncodedKey(),
file.fileDecryptionParams.keyDecryptionNonce,
)),
EncryptionAttribute(base64: file.fileDecryptionParams.header),
);
await CryptoUtil.chachaDecrypt(encryptedFile, decryptedFile, attributes);
encryptedFile.deleteSync();
decryptedFile.deleteSync();
final fileExtension = extension(file.title).substring(1).toLowerCase();
return cacheManager.putFile(
final cachedFile = await cacheManager.putFile(
file.getDownloadUrl(),
decryptedFile.readAsBytesSync(),
eTag: file.getDownloadUrl(),
maxAge: Duration(days: 365),
fileExtension: fileExtension,
);
decryptedFile.deleteSync();
return cachedFile;
});
}