optional<InnerConfig> InnerConfig::deserialize(const Data &data) {
Deserializer deserializer(&data);
try {
_checkHeader(&deserializer);
string cipherName = deserializer.readString();
auto result = deserializer.readTailData();
deserializer.finished();
return InnerConfig {cipherName, std::move(result)};
} catch (const exception &e) {
LOG(ERROR) << "Error deserializing inner configuration: " << e.what();
return none; // This can be caused by invalid input data and does not have to be a programming error. Don't throw exception.
}
}
optional<OuterConfig> OuterConfig::deserialize(const Data &data) {
Deserializer deserializer(&data);
try {
#ifndef CRYFS_NO_COMPATIBILITY
string header = deserializer.readString();
if (header == OLD_HEADER) {
return _deserializeOldFormat(&deserializer);
} else if (header == HEADER) {
return _deserializeNewFormat(&deserializer);
} else {
throw std::runtime_error("Invalid header");
}
#else
_checkHeader(&deserializer);
_deserializeNewFormat(&deserializer);
#endif
} catch (const exception &e) {
LOG(ERROR, "Error deserializing outer configuration: {}", e.what());
return none; // This can be caused by invalid input data and does not have to be a programming error. Don't throw exception.
}
}