Yuito-app-android/app/src/main/java/com/keylesspalace/tusky/network/InstanceSwitchAuthIntercept...

83 lines
3.2 KiB
Kotlin

/* Copyright 2022 Tusky Contributors
*
* This file is a part of Tusky.
*
* 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.
*
* Tusky 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 Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.network
import android.util.Log
import com.keylesspalace.tusky.db.AccountManager
import okhttp3.HttpUrl
import okhttp3.Interceptor
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody.Companion.toResponseBody
import java.io.IOException
class InstanceSwitchAuthInterceptor(private val accountManager: AccountManager) : Interceptor {
@Throws(IOException::class)
override fun intercept(chain: Interceptor.Chain): Response {
val originalRequest: Request = chain.request()
// only switch domains if the request comes from retrofit
return if (originalRequest.url.host == MastodonApi.PLACEHOLDER_DOMAIN) {
val builder: Request.Builder = originalRequest.newBuilder()
val instanceHeader = originalRequest.header(MastodonApi.DOMAIN_HEADER)
if (instanceHeader != null) {
// use domain explicitly specified in custom header
builder.url(swapHost(originalRequest.url, instanceHeader))
builder.removeHeader(MastodonApi.DOMAIN_HEADER)
} else {
val currentAccount = accountManager.activeAccount
if (currentAccount != null) {
val accessToken = currentAccount.accessToken
if (accessToken.isNotEmpty()) {
// use domain of current account
builder.url(swapHost(originalRequest.url, currentAccount.domain))
.header("Authorization", "Bearer %s".format(accessToken))
}
}
}
val newRequest: Request = builder.build()
if (MastodonApi.PLACEHOLDER_DOMAIN == newRequest.url.host) {
Log.w("ISAInterceptor", "no user logged in or no domain header specified - can't make request to " + newRequest.url)
return Response.Builder()
.code(400)
.message("Bad Request")
.protocol(Protocol.HTTP_2)
.body("".toResponseBody("text/plain".toMediaType()))
.request(chain.request())
.build()
}
chain.proceed(newRequest)
} else {
chain.proceed(originalRequest)
}
}
companion object {
private fun swapHost(url: HttpUrl, host: String): HttpUrl {
return url.newBuilder().host(host).build()
}
}
}