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/*
* This file is part of GNU Taler
* (C) 2020 Taler Systems S.A.
*
* GNU Taler 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, or (at your option) any later version.
*
* GNU Taler 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
* GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
package net.taler.wallet.kotlin.exchange
import io.ktor.client.HttpClient
import io.ktor.client.request.get
import kotlinx.serialization.Serializable
import net.taler.wallet.kotlin.Timestamp
/**
* Structure that the exchange gives us in /keys.
*/
@Serializable
internal data class Keys(
/**
* List of offered denominations.
*/
val denoms: List<Denomination>,
/**
* The exchange's master public key.
*/
val master_public_key: String,
/**
* The list of auditors (partially) auditing the exchange.
*/
val auditors: List<Auditor>,
/**
* Timestamp when this response was issued.
*/
val list_issue_date: Timestamp,
/**
* List of revoked denominations.
*/
val recoup: List<Recoup>?,
/**
* Short-lived signing keys used to sign online
* responses.
*/
val signkeys: List<SigningKey>,
/**
* Protocol version.
*/
val version: String
) {
companion object {
/**
* Fetch an exchange's /keys with the given normalized base URL.
*/
suspend fun fetch(httpClient: HttpClient, exchangeBaseUrl: String): Keys {
return httpClient.get("${exchangeBaseUrl}keys")
}
}
}
/**
* Structure of one exchange signing key in the /keys response.
*/
@Serializable
data class SigningKey(
val stamp_start: Timestamp,
val stamp_expire: Timestamp,
val stamp_end: Timestamp,
val key: String,
val master_sig: String
)
/**
* Element of the payback list that the
* exchange gives us in /keys.
*/
@Serializable
data class Recoup(
/**
* The hash of the denomination public key for which the payback is offered.
*/
val h_denom_pub: String
)
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