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Handle values >127.

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Dain Nilsson 2023-08-11 11:59:32 +02:00
parent b61791f8e8
commit bdcc33ea61
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1 changed files with 14 additions and 6 deletions
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20
lib/oath/models.dart
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@ -134,19 +134,27 @@ class CredentialData with _$CredentialData {
}
static List<CredentialData> fromMigration(Uri uri) {
// Parse single protobuf encoded integer
(int value, Uint8List rem) protoInt(Uint8List data) {
final extras = data.takeWhile((b) => b & 0x80 != 0).length;
int value = 0;
for (int i = extras; i >= 0; i--) {
value = (value << 7) | (data[i] & 0x7F);
}
return (value, data.sublist(1 + extras));
}
// Parse a single protobuf value from a buffer
(int tag, dynamic value, Uint8List rem) protoValue(Uint8List data) {
final first = data[0];
final int len;
(len, data) = protoInt(data.sublist(1));
final index = first >> 3;
final second = data[1];
data = data.sublist(2);
switch (first & 0x07) {
case 0:
assert(second & 0x80 == 0);
return (index, second, data);
return (index, len, data);
case 2:
assert(second & 0x80 == 0);
return (index, data.sublist(0, second), data.sublist(second));
return (index, data.sublist(0, len), data.sublist(len));
}
throw ArgumentError('Unsupported value type!');
}