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/**
* DesfireFileSettings.kt
*
* Copyright (C) 2011 Eric Butler
* Copyright (C) 2019 <seil0@mosad.xyz>
*
* Authors:
* Eric Butler <eric@codebutler.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.codebutler.farebot.card.desfire
import android.os.Parcel
import android.os.Parcelable
import com.codebutler.farebot.Utils
import org.apache.commons.lang3.ArrayUtils
import java.io.ByteArrayInputStream
abstract class DesfireFileSettings : Parcelable {
private val fileType: Byte
private val commSetting: Byte
private val accessRights: ByteArray
@Suppress("unused")
val fileTypeName: String
get() {
return when (fileType) {
STANDARD_DATA_FILE -> "Standard"
BACKUP_DATA_FILE -> "Backup"
VALUE_FILE -> "Value"
LINEAR_RECORD_FILE -> "Linear Record"
CYCLIC_RECORD_FILE -> "Cyclic Record"
else -> "Unknown"
}
}
private constructor(stream: ByteArrayInputStream) {
fileType = stream.read().toByte()
commSetting = stream.read().toByte()
accessRights = ByteArray(2)
stream.read(accessRights, 0, accessRights.size)
}
private constructor(fileType: Byte, commSetting: Byte, accessRights: ByteArray) {
this.fileType = fileType
this.commSetting = commSetting
this.accessRights = accessRights
}
override fun writeToParcel(parcel: Parcel, flags: Int) {
parcel.writeByte(fileType)
parcel.writeByte(commSetting)
parcel.writeInt(accessRights.size)
parcel.writeByteArray(accessRights)
}
override fun describeContents(): Int {
return 0
}
class StandardDesfireFileSettings : DesfireFileSettings {
private val fileSize: Int
internal constructor(stream: ByteArrayInputStream) : super(stream) {
val buf = ByteArray(3)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
fileSize = Utils.byteArrayToInt(buf)
}
internal constructor(
fileType: Byte,
commSetting: Byte,
accessRights: ByteArray,
fileSize: Int
) : super(fileType, commSetting, accessRights) {
this.fileSize = fileSize
}
override fun writeToParcel(parcel: Parcel, flags: Int) {
super.writeToParcel(parcel, flags)
parcel.writeInt(fileSize)
}
}
class RecordDesfireFileSettings : DesfireFileSettings {
private val maxRecords: Int
val recordSize: Int
val curRecords: Int
constructor(stream: ByteArrayInputStream) : super(stream) {
var buf = ByteArray(3)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
recordSize = Utils.byteArrayToInt(buf)
buf = ByteArray(3)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
maxRecords = Utils.byteArrayToInt(buf)
buf = ByteArray(3)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
curRecords = Utils.byteArrayToInt(buf)
}
internal constructor(
fileType: Byte,
commSetting: Byte,
accessRights: ByteArray,
recordSize: Int,
maxRecords: Int,
curRecords: Int
) : super(fileType, commSetting, accessRights) {
this.recordSize = recordSize
this.maxRecords = maxRecords
this.curRecords = curRecords
}
override fun writeToParcel(parcel: Parcel, flags: Int) {
super.writeToParcel(parcel, flags)
parcel.writeInt(recordSize)
parcel.writeInt(maxRecords)
parcel.writeInt(curRecords)
}
}
class ValueDesfireFileSettings(stream: ByteArrayInputStream) : DesfireFileSettings(stream) {
private val lowerLimit: Int
private val upperLimit: Int
val value: Int
private val limitedCreditEnabled: Byte
init {
var buf = ByteArray(4)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
lowerLimit = Utils.byteArrayToInt(buf)
buf = ByteArray(4)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
upperLimit = Utils.byteArrayToInt(buf)
buf = ByteArray(4)
stream.read(buf, 0, buf.size)
ArrayUtils.reverse(buf)
value = Utils.byteArrayToInt(buf)
buf = ByteArray(1)
stream.read(buf, 0, buf.size)
limitedCreditEnabled = buf[0]
//http://www.skyetek.com/docs/m2/desfire.pdf
//http://neteril.org/files/M075031_desfire.pdf
}
override fun writeToParcel(parcel: Parcel, flags: Int) {
super.writeToParcel(parcel, flags)
parcel.writeInt(lowerLimit)
parcel.writeInt(upperLimit)
parcel.writeInt(value)
parcel.writeByte(limitedCreditEnabled)
}
}
class UnsupportedDesfireFileSettings(fileType: Byte) :
DesfireFileSettings(fileType, java.lang.Byte.MIN_VALUE, ByteArray(0))
companion object {
/* DesfireFile Types */
internal const val STANDARD_DATA_FILE = 0x00.toByte()
internal const val BACKUP_DATA_FILE = 0x01.toByte()
internal const val VALUE_FILE = 0x02.toByte()
internal const val LINEAR_RECORD_FILE = 0x03.toByte()
internal const val CYCLIC_RECORD_FILE = 0x04.toByte()
@Throws(DesfireException::class)
fun create(data: ByteArray): DesfireFileSettings {
val fileType = data[0]
val stream = ByteArrayInputStream(data)
return if (fileType == STANDARD_DATA_FILE || fileType == BACKUP_DATA_FILE)
StandardDesfireFileSettings(stream)
else if (fileType == LINEAR_RECORD_FILE || fileType == CYCLIC_RECORD_FILE)
RecordDesfireFileSettings(stream)
else if (fileType == VALUE_FILE)
ValueDesfireFileSettings(stream)
else
throw DesfireException("Unknown file type: " + Integer.toHexString(fileType.toInt()))
}
@Suppress("unused")
@JvmField
val CREATOR: Parcelable.Creator<DesfireFileSettings> = object : Parcelable.Creator<DesfireFileSettings> {
override fun createFromParcel(source: Parcel): DesfireFileSettings {
val fileType = source.readByte()
val commSetting = source.readByte()
val accessRights = ByteArray(source.readInt())
source.readByteArray(accessRights)
if (fileType == STANDARD_DATA_FILE || fileType == BACKUP_DATA_FILE) {
val fileSize = source.readInt()
return StandardDesfireFileSettings(fileType, commSetting, accessRights, fileSize)
} else if (fileType == LINEAR_RECORD_FILE || fileType == CYCLIC_RECORD_FILE) {
val recordSize = source.readInt()
val maxRecords = source.readInt()
val curRecords = source.readInt()
return RecordDesfireFileSettings(
fileType,
commSetting,
accessRights,
recordSize,
maxRecords,
curRecords
)
} else {
return UnsupportedDesfireFileSettings(fileType)
}
}
override fun newArray(size: Int): Array<DesfireFileSettings?> {
return arrayOfNulls(size)
}
}
}
}

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