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/**
* DesfireFile.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.card.desfire.DesfireFileSettings.RecordDesfireFileSettings
import org.apache.commons.lang3.ArrayUtils
open class DesfireFile private constructor(val id: Int, private val fileSettings: DesfireFileSettings?, val data: ByteArray) :
Parcelable {
override fun writeToParcel(parcel: Parcel, flags: Int) {
parcel.writeInt(id)
if (this is InvalidDesfireFile) {
parcel.writeInt(1)
parcel.writeString(this.errorMessage)
} else {
parcel.writeInt(0)
parcel.writeParcelable(fileSettings, 0)
parcel.writeInt(data.size)
parcel.writeByteArray(data)
}
}
override fun describeContents(): Int {
return 0
}
class RecordDesfireFile(fileId: Int, fileSettings: DesfireFileSettings, fileData: ByteArray) :
DesfireFile(fileId, fileSettings, fileData) {
private val records: Array<DesfireRecord?>
init {
val settings = fileSettings as RecordDesfireFileSettings
val records = arrayOfNulls<DesfireRecord>(settings.curRecords)
for (i in 0 until settings.curRecords) {
val offset = settings.recordSize * i
records[i] = DesfireRecord(ArrayUtils.subarray(data, offset, offset + settings.recordSize))
}
this.records = records
}
}
class InvalidDesfireFile(fileId: Int, val errorMessage: String?) : DesfireFile(fileId, null, ByteArray(0))
companion object {
fun create(fileId: Int, fileSettings: DesfireFileSettings, fileData: ByteArray): DesfireFile {
return (fileSettings as? RecordDesfireFileSettings)?.let { RecordDesfireFile(fileId, it, fileData) }
?: DesfireFile(fileId, fileSettings, fileData)
}
@Suppress("unused")
@JvmField
val CREATOR: Parcelable.Creator<DesfireFile> = object : Parcelable.Creator<DesfireFile> {
override fun createFromParcel(source: Parcel): DesfireFile {
val fileId = source.readInt()
val isError = source.readInt() == 1
return if (!isError) {
val fileSettings =
source.readParcelable<Parcelable>(DesfireFileSettings::class.java.classLoader) as DesfireFileSettings
val dataLength = source.readInt()
val fileData = ByteArray(dataLength)
source.readByteArray(fileData)
create(fileId, fileSettings, fileData)
} else {
InvalidDesfireFile(fileId, source.readString())
}
}
override fun newArray(size: Int): Array<DesfireFile?> {
return arrayOfNulls(size)
}
}
}
}

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