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/*
* Copyright © 2014-2021 The Android Password Store Authors. All Rights Reserved.
* SPDX-License-Identifier: GPL-3.0-only
*/
package dev.msfjarvis.aps.util.totp
import android.net.Uri
/**
* [Uri] backed TOTP URL parser.
*/
class UriTotpFinder : TotpFinder {
override fun findSecret(content: String): String? {
content.split("\n".toRegex()).forEach { line ->
if (line.startsWith(TOTP_FIELDS[0])) {
return Uri.parse(line).getQueryParameter("secret")
}
if (line.startsWith(TOTP_FIELDS[1], ignoreCase = true)) {
return line.split(": *".toRegex(), 2).toTypedArray()[1]
}
}
return null
}
override fun findDigits(content: String): String {
content.split("\n".toRegex()).forEach { line ->
if (line.startsWith(TOTP_FIELDS[0]) &&
Uri.parse(line).getQueryParameter("digits") != null) {
return Uri.parse(line).getQueryParameter("digits")!!
}
}
return "6"
}
override fun findPeriod(content: String): Long {
content.split("\n".toRegex()).forEach { line ->
if (line.startsWith(TOTP_FIELDS[0]) &&
Uri.parse(line).getQueryParameter("period") != null) {
val period = Uri.parse(line).getQueryParameter("period")!!.toLongOrNull()
if (period != null && period > 0)
return period
}
}
return 30
}
override fun findAlgorithm(content: String): String {
content.split("\n".toRegex()).forEach { line ->
if (line.startsWith(TOTP_FIELDS[0]) &&
Uri.parse(line).getQueryParameter("algorithm") != null) {
return Uri.parse(line).getQueryParameter("algorithm")!!
}
}
return "sha1"
}
companion object {
val TOTP_FIELDS = arrayOf(
"otpauth://totp",
"totp:"
)
}
}
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