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package moe.nea.ledger.utils.network
import moe.nea.ledger.utils.ErrorUtil
import moe.nea.ledger.utils.di.Inject
import java.net.URL
import java.net.URLConnection
import java.security.KeyStore
import java.util.zip.GZIPInputStream
import javax.net.ssl.HttpsURLConnection
import javax.net.ssl.KeyManagerFactory
import javax.net.ssl.SSLContext
import javax.net.ssl.TrustManagerFactory
class RequestUtil @Inject constructor(val errorUtil: ErrorUtil) {
private fun createSSLContext(): SSLContext? = errorUtil.catch {
val keyStorePath = RequestUtil::class.java.getResourceAsStream("/ledgerkeystore.jks")
?: error("Could not locate keystore")
val keyStore = KeyStore.getInstance("JKS")
keyStore.load(keyStorePath, "neuneu".toCharArray())
val kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
val tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
kmf.init(keyStore, null)
tmf.init(keyStore)
val ctx = SSLContext.getInstance("TLS")
ctx.init(kmf.keyManagers, tmf.trustManagers, null)
return@catch ctx
}
val sslContext = createSSLContext()
fun enhanceConnection(connection: URLConnection) {
if (connection is HttpsURLConnection && sslContext != null) {
connection.sslSocketFactory = sslContext.socketFactory
}
}
fun createRequest(url: String) = createRequest(URL(url))
fun createRequest(url: URL) = Request(url, Request.Method.GET, null, mapOf())
fun executeRequest(request: Request): Response {
val connection = request.url.openConnection()
enhanceConnection(connection)
connection.setRequestProperty("accept-encoding", "gzip")
request.headers.forEach { (k, v) ->
connection.setRequestProperty(k, v)
}
if (request.body != null) {
connection.getOutputStream().write(request.body.encodeToByteArray())
connection.getOutputStream().close()
}
var stream = connection.getInputStream()
if (connection.contentEncoding == "gzip") {
stream = GZIPInputStream(stream)
}
val text = stream.bufferedReader().readText()
stream.close()
// Do NOT call connection.disconnect() to allow for connection reuse
return Response(request, text, connection.headerFields)
}
}
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