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@ -1,8 +1,6 @@ |
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import 'dart:typed_data'; |
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import 'dart:typed_data'; |
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import 'package:convert/convert.dart' as convert; |
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import 'package:crypto/crypto.dart' as crypto; |
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import 'package:crypto/crypto.dart' as crypto; |
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import 'package:kdbx/src/crypto/protected_value.dart'; |
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import 'package:kdbx/src/internal/byte_utils.dart'; |
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import 'package:kdbx/src/internal/byte_utils.dart'; |
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import 'package:logging/logging.dart'; |
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import 'package:logging/logging.dart'; |
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@ -51,14 +49,21 @@ class HeaderField { |
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} |
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} |
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class KdbxHeader { |
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class KdbxHeader { |
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KdbxHeader({this.sig1, this.sig2, this.versionMinor, this.versionMajor, this.fields}); |
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KdbxHeader( |
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{this.sig1, |
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static Future<KdbxHeader> read(ReaderHelper reader) async { |
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this.sig2, |
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this.versionMinor, |
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this.versionMajor, |
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this.fields}); |
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static KdbxHeader read(ReaderHelper reader) { |
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// reading signature |
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// reading signature |
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final sig1 = reader.readUint32(); |
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final sig1 = reader.readUint32(); |
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final sig2 = reader.readUint32(); |
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final sig2 = reader.readUint32(); |
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if (!(sig1 == Consts.FileMagic && sig2 == Consts.Sig2Kdbx)) { |
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if (!(sig1 == Consts.FileMagic && sig2 == Consts.Sig2Kdbx)) { |
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throw UnsupportedError('Unsupported file structure. ${ByteUtils.toHex(sig1)}, ${ByteUtils.toHex(sig2)}'); |
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throw UnsupportedError( |
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'Unsupported file structure. ${ByteUtils.toHex(sig1)}, ' |
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'${ByteUtils.toHex(sig2)}'); |
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} |
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} |
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// reading version |
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// reading version |
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@ -66,7 +71,8 @@ class KdbxHeader { |
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final versionMajor = reader.readUint16(); |
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final versionMajor = reader.readUint16(); |
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_logger.finer('Reading version: $versionMajor.$versionMinor'); |
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_logger.finer('Reading version: $versionMajor.$versionMinor'); |
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final headerFields = Map.fromEntries(readField(reader, versionMajor).map((field) => MapEntry(field.field, field))); |
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final headerFields = Map.fromEntries(readField(reader, versionMajor) |
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.map((field) => MapEntry(field.field, field))); |
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return KdbxHeader( |
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return KdbxHeader( |
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sig1: sig1, |
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sig1: sig1, |
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sig2: sig2, |
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sig2: sig2, |
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@ -76,10 +82,12 @@ class KdbxHeader { |
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); |
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); |
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} |
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} |
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static Iterable<HeaderField> readField(ReaderHelper reader, int versionMajor) sync* { |
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static Iterable<HeaderField> readField( |
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ReaderHelper reader, int versionMajor) sync* { |
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while (true) { |
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while (true) { |
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final headerId = reader.readUint8(); |
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final headerId = reader.readUint8(); |
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final int bodySize = versionMajor >= 4 ? reader.readUint32() : reader.readUint16(); |
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final int bodySize = |
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versionMajor >= 4 ? reader.readUint32() : reader.readUint16(); |
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_logger.finer('Read header ${HeaderFields.values[headerId]}'); |
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_logger.finer('Read header ${HeaderFields.values[headerId]}'); |
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final bodyBytes = bodySize > 0 ? reader.readBytes(bodySize) : null; |
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final bodyBytes = bodySize > 0 ? reader.readBytes(bodySize) : null; |
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if (headerId > 0) { |
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if (headerId > 0) { |
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@ -108,7 +116,8 @@ class KdbxHeader { |
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} |
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} |
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PotectedValueEncryption get innerRandomStreamEncryption => |
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PotectedValueEncryption get innerRandomStreamEncryption => |
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PotectedValueEncryption.values[fields[HeaderFields.InnerRandomStreamID].bytes.asUint32List().single]; |
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PotectedValueEncryption.values[ |
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fields[HeaderFields.InnerRandomStreamID].bytes.asUint32List().single]; |
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} |
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} |
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class KdbxException implements Exception {} |
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class KdbxException implements Exception {} |
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@ -134,7 +143,8 @@ class HashedBlockReader { |
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final blockSize = reader.readUint32(); |
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final blockSize = reader.readUint32(); |
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if (blockSize > 0) { |
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if (blockSize > 0) { |
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final blockData = reader.readBytes(blockSize).asUint8List(); |
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final blockData = reader.readBytes(blockSize).asUint8List(); |
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if (!ByteUtils.eq(crypto.sha256.convert(blockData).bytes as Uint8List, blockHash.asUint8List())) { |
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if (!ByteUtils.eq(crypto.sha256.convert(blockData).bytes as Uint8List, |
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blockHash.asUint8List())) { |
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throw KdbxCorruptedFileException(); |
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throw KdbxCorruptedFileException(); |
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} |
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} |
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yield blockData; |
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yield blockData; |
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@ -151,7 +161,8 @@ class ReaderHelper { |
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final Uint8List data; |
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final Uint8List data; |
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int pos = 0; |
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int pos = 0; |
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ByteBuffer _nextByteBuffer(int byteCount) => (data.sublist(pos, pos += byteCount) as Uint8List).buffer; |
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ByteBuffer _nextByteBuffer(int byteCount) => |
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(data.sublist(pos, pos += byteCount) as Uint8List).buffer; |
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int readUint32() => _nextByteBuffer(4).asUint32List().first; |
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int readUint32() => _nextByteBuffer(4).asUint32List().first; |
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