[BWA-182] Add mTLS support for Glide image loading (#6125)

Co-authored-by: David Perez <david@livefront.com>

network/src/main/kotlin/com/bitwarden/network/retrofit/RetrofitsImpl.kt

@@ -5,8 +5,8 @@ import com.bitwarden.network.interceptor.AuthTokenManager
 import com.bitwarden.network.interceptor.BaseUrlInterceptor
 import com.bitwarden.network.interceptor.BaseUrlInterceptors
 import com.bitwarden.network.interceptor.HeadersInterceptor
-import com.bitwarden.network.ssl.BitwardenX509ExtendedKeyManager
 import com.bitwarden.network.ssl.CertificateProvider
+import com.bitwarden.network.ssl.configureSsl
 import com.bitwarden.network.util.HEADER_KEY_AUTHORIZATION
 import kotlinx.serialization.json.Json
 import okhttp3.MediaType.Companion.toMediaType
@@ -15,11 +15,6 @@ import okhttp3.logging.HttpLoggingInterceptor
 import retrofit2.Retrofit
 import retrofit2.converter.kotlinx.serialization.asConverterFactory
 import timber.log.Timber
-import java.security.KeyStore
-import javax.net.ssl.SSLContext
-import javax.net.ssl.TrustManager
-import javax.net.ssl.TrustManagerFactory
-import javax.net.ssl.X509TrustManager
 
 /**
  * Primary implementation of [Retrofits].
@@ -97,7 +92,7 @@ internal class RetrofitsImpl(
 
     private val baseOkHttpClient: OkHttpClient = OkHttpClient.Builder()
         .addInterceptor(headersInterceptor)
-        .configureSsl()
+        .configureSsl(certificateProvider = certificateProvider)
         .build()
 
     private val authenticatedOkHttpClient: OkHttpClient by lazy {
@@ -149,28 +144,5 @@ internal class RetrofitsImpl(
             )
             .build()
 
-    private fun createSslTrustManagers(): Array<TrustManager> =
-        TrustManagerFactory
-            .getInstance(TrustManagerFactory.getDefaultAlgorithm())
-            .apply { init(null as KeyStore?) }
-            .trustManagers
-
-    private fun createSslContext(certificateProvider: CertificateProvider): SSLContext = SSLContext
-        .getInstance("TLS").apply {
-            init(
-                arrayOf(
-                    BitwardenX509ExtendedKeyManager(certificateProvider = certificateProvider),
-                ),
-                createSslTrustManagers(),
-                null,
-            )
-        }
-
-    private fun OkHttpClient.Builder.configureSsl(): OkHttpClient.Builder =
-        sslSocketFactory(
-            createSslContext(certificateProvider = certificateProvider).socketFactory,
-            createSslTrustManagers().first() as X509TrustManager,
-        )
-
     //endregion Helper properties and functions
 }

network/src/main/kotlin/com/bitwarden/network/ssl/SslCertificateUtils.kt

@@ -0,0 +1,63 @@
+package com.bitwarden.network.ssl
+
+import okhttp3.OkHttpClient
+import java.security.KeyStore
+import javax.net.ssl.SSLContext
+import javax.net.ssl.TrustManager
+import javax.net.ssl.TrustManagerFactory
+import javax.net.ssl.X509TrustManager
+
+/**
+ * Creates an [OkHttpClient] configured with mTLS support using this [CertificateProvider].
+ *
+ * The returned client will present the client certificate from this provider during TLS
+ * handshakes, allowing requests to pass through mTLS checks.
+ */
+fun CertificateProvider.createMtlsOkHttpClient(): OkHttpClient =
+    OkHttpClient.Builder()
+        .configureSsl(certificateProvider = this)
+        .build()
+
+/**
+ * Configures the [OkHttpClient.Builder] to use the a `SSLSocketFactory` as provided by the
+ * [CertificateProvider].
+ */
+fun OkHttpClient.Builder.configureSsl(
+    certificateProvider: CertificateProvider,
+): OkHttpClient.Builder {
+    val trustManagers = sslTrustManagers
+    val sslContext = certificateProvider.createSslContext(trustManagers = trustManagers)
+    return sslSocketFactory(
+        sslContext.socketFactory,
+        trustManagers.first() as X509TrustManager,
+    )
+}
+
+/**
+ * Creates an [SSLContext] configured with mTLS support using this [CertificateProvider].
+ *
+ * The returned SSLContext will present the client certificate from this provider during
+ * TLS handshakes, enabling mutual TLS authentication.
+ */
+private fun CertificateProvider.createSslContext(
+    trustManagers: Array<TrustManager>,
+): SSLContext = SSLContext.getInstance("TLS").apply {
+    init(
+        arrayOf(
+            BitwardenX509ExtendedKeyManager(certificateProvider = this@createSslContext),
+        ),
+        trustManagers,
+        null,
+    )
+}
+
+/**
+ * Creates default [TrustManager]s for verifying server certificates.
+ *
+ * Uses the system's default trust anchors (trusted CA certificates).
+ */
+private val sslTrustManagers: Array<TrustManager>
+    get() = TrustManagerFactory
+        .getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        .apply { init(null as KeyStore?) }
+        .trustManagers