Minor code cleanup

app/src/main/java/com/hippo/ehviewer/EhApplication.kt

@@ -41,7 +41,6 @@ import com.hippo.ehviewer.client.EhRequestBuilder
 import com.hippo.ehviewer.client.EhSSLSocketFactory
 import com.hippo.ehviewer.client.EhTagDatabase
 import com.hippo.ehviewer.client.EhUrl
-import com.hippo.ehviewer.client.EhX509TrustManager
 import com.hippo.ehviewer.client.data.GalleryDetail
 import com.hippo.ehviewer.client.parser.EventPaneParser
 import com.hippo.ehviewer.dao.buildMainDB
@@ -61,7 +60,6 @@ import kotlinx.coroutines.ExperimentalCoroutinesApi
 import okhttp3.OkHttpClient
 import java.net.Proxy
 import java.security.KeyStore
-import java.util.Arrays
 import javax.net.ssl.TrustManagerFactory
 import javax.net.ssl.X509TrustManager
 
@@ -281,24 +279,12 @@ class EhApplication : Application(), DefaultLifecycleObserver, ImageLoaderFactor
                 .proxySelector(ehProxySelector)
 
             if (Settings.getDF()) {
-                var trustManager: X509TrustManager
-                try {
-                    val trustManagerFactory = TrustManagerFactory.getInstance(
-                        TrustManagerFactory.getDefaultAlgorithm()
-                    )
-                    trustManagerFactory.init(null as KeyStore?)
-                    val trustManagers = trustManagerFactory.trustManagers
-                    check(!(trustManagers.size != 1 || trustManagers[0] !is X509TrustManager)) {
-                        "Unexpected default trust managers:" + Arrays.toString(
-                            trustManagers
-                        )
-                    }
-                    trustManager = trustManagers[0] as X509TrustManager
-                } catch (e: Exception) {
-                    e.printStackTrace()
-                    trustManager = EhX509TrustManager
-                }
+                val factory =
+                    TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())!!
+                factory.init(null as KeyStore?)
+                val manager = factory.trustManagers!!
 
+                val trustManager = manager.filterIsInstance<X509TrustManager>().first()
                 builder.sslSocketFactory(EhSSLSocketFactory, trustManager)
                 builder.proxy(Proxy.NO_PROXY)
             }

app/src/main/java/com/hippo/ehviewer/client/EhX509TrustManager.kt

@@ -1,37 +0,0 @@
-/*
- * Copyright 2022 Tarsin Norbin
- *
- * This file is part of EhViewer
- *
- * EhViewer 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.
- *
- * EhViewer 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 EhViewer.
- * If not, see <https://www.gnu.org/licenses/>.
- */
-package com.hippo.ehviewer.client
-
-import android.annotation.SuppressLint
-import java.security.cert.X509Certificate
-import javax.net.ssl.X509TrustManager
-
-@SuppressLint("CustomX509TrustManager")
-object EhX509TrustManager : X509TrustManager {
-    @SuppressLint("TrustAllX509TrustManager")
-    override fun checkClientTrusted(chain: Array<X509Certificate>, authType: String) {
-    }
-
-    @SuppressLint("TrustAllX509TrustManager")
-    override fun checkServerTrusted(chain: Array<X509Certificate>, authType: String) {
-    }
-
-    override fun getAcceptedIssuers(): Array<X509Certificate?> {
-        return arrayOfNulls(0)
-    }
-}