ADST-422 (#73)

* added auth0 authentication

* added secured parameter for Auth0

* code correction

auth/build.gradle

@@ -6,14 +6,14 @@ apply plugin: 'org.jetbrains.dokka'
 android {
     namespace 'com.alfresco.auth'
     defaultConfig {
-        versionName "0.8.1"
+        versionName "0.8.2"
     }
 }
 
 dependencies {
     implementation libs.appauth
     implementation libs.jwtdecode
-
+    implementation libs.auth0
     implementation libs.kotlin.serialization.json
 
     implementation libs.androidx.appcompat

auth/src/main/java/com/alfresco/auth/AuthConfig.kt

@@ -38,7 +38,16 @@ data class AuthConfig(
     /**
      * Path to content service
      */
-    var contentServicePath: String
+    var contentServicePath: String,
+
+    /**
+     * scheme for Auth0
+     */
+    var scheme: String = "",
+    /**
+     * selected AuthType
+     */
+    var authType: String = ""
 ) {
     /**
      * Convenience method for JSON serialization.
@@ -51,7 +60,8 @@ data class AuthConfig(
         /**
          * Convenience method for deserializing a JSON string representation.
          */
-        @JvmStatic fun jsonDeserialize(str: String): AuthConfig? {
+        @JvmStatic
+        fun jsonDeserialize(str: String): AuthConfig? {
             return try {
                 Json.decodeFromString(serializer(), str)
             } catch (ex: SerializationException) {

auth/src/main/java/com/alfresco/auth/AuthInterceptor.kt

@@ -40,6 +40,7 @@ class AuthInterceptor(
         provider = when (authType) {
             AuthType.BASIC -> BasicProvider(stateString)
             AuthType.PKCE -> PkceProvider(stateString, config)
+            AuthType.OIDC -> OIDCProvider(stateString)
             AuthType.UNKNOWN -> PlainProvider()
         }
     }
@@ -224,10 +225,27 @@ class AuthInterceptor(
         }
     }
 
+    private inner class OIDCProvider (val accessToken : String) : Provider{
+        override fun intercept(chain: Interceptor.Chain): Response {
+            val response = chain.proceed(AuthType.OIDC, accessToken)
+
+            // If still error notify listener of failure
+            if (response.code == HTTP_RESPONSE_401_UNAUTHORIZED) {
+                listener?.onAuthFailure(accountId, response.request.url.toString())
+            }
+            return response
+        }
+
+        override fun finish() {
+            localScope.coroutineContext.cancelChildren()
+        }
+    }
+
     private fun Interceptor.Chain.proceed(type: AuthType, token: String?): Response {
         val headerValue = when (type) {
             AuthType.BASIC -> "Basic $token"
             AuthType.PKCE -> "Bearer $token"
+            AuthType.OIDC -> "bearer $token"
             AuthType.UNKNOWN -> null
         }
         return proceedWithAuthorization(headerValue)

auth/src/main/java/com/alfresco/auth/AuthType.kt

@@ -15,6 +15,11 @@ enum class AuthType(val value: String) {
      */
     PKCE("pkce"),
 
+    /**
+     * Used to specify the need of SSO auth
+     */
+    OIDC("oidc"),
+
     /**
      * Used to specify that the auth type is unknown
      */

auth/src/main/java/com/alfresco/auth/Credentials.kt

@@ -17,5 +17,9 @@ data class Credentials(
     /**
      * String representation of authentication type.
      */
-    val authType: String
+    val authType: String,
+
+    val hostName: String = "",
+
+    val clientId: String = ""
 )

auth/src/main/java/com/alfresco/auth/DiscoveryService.kt

@@ -2,15 +2,16 @@ package com.alfresco.auth
 
 import android.content.Context
 import android.net.Uri
+import com.alfresco.auth.data.AppConfigDetails
 import com.alfresco.auth.data.ContentServerDetails
 import com.alfresco.auth.data.ContentServerDetailsData
 import com.alfresco.auth.pkce.PkceAuthService
-import java.net.URL
-import java.util.concurrent.TimeUnit
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import okhttp3.OkHttpClient
 import okhttp3.Request
+import java.net.URL
+import java.util.concurrent.TimeUnit
 
 /**
  * Class that facilitates service discovery process.
@@ -24,10 +25,27 @@ class DiscoveryService(
      * Determine which [AuthType] is supported by the [endpoint].
      */
     suspend fun getAuthType(endpoint: String): AuthType {
+
+        when (authConfig.authType.lowercase()) {
+            AuthType.OIDC.value -> {
+                if (isOIDC(endpoint)) {
+                    return AuthType.OIDC
+                }
+            }
+
+            AuthType.PKCE.value -> {
+                if (isPkceType(endpoint)) {
+                    return AuthType.PKCE
+                }
+            }
+        }
+
         return when {
 
             isPkceType(endpoint) -> AuthType.PKCE
 
+            isOIDC(endpoint) -> AuthType.OIDC
+
             isBasicType(endpoint) -> AuthType.BASIC
 
             else -> AuthType.UNKNOWN
@@ -62,6 +80,31 @@ class DiscoveryService(
         }
     }
 
+    suspend fun isOIDCInstalled(appConfigURL: String): Boolean {
+        val uri = PkceAuthService.discoveryUriWithAuth0(appConfigURL).toString()
+        return withContext(Dispatchers.IO) {
+            try {
+                val client = OkHttpClient.Builder()
+                    .connectTimeout(30, TimeUnit.SECONDS)
+                    .build()
+                val request = Request.Builder()
+                    .url(URL(uri))
+                    .get()
+                    .build()
+                val response = client.newCall(request).execute()
+
+                if (response.code != 200) return@withContext false
+
+                val body = response.body?.string() ?: ""
+                val data = AppConfigDetails.jsonDeserialize(body)
+                return@withContext data?.oauth2?.audience?.isNotBlank() == true
+            } catch (e: Exception) {
+                e.printStackTrace()
+                false
+            }
+        }
+    }
+
     /**
      * returns content server details based on [endpoint].
      */
@@ -97,10 +140,15 @@ class DiscoveryService(
         val result = try {
             val authService = PkceAuthService(context, null, authConfig)
             authService.fetchDiscoveryFromUrl(uri)
-        } catch (exception: Exception) { null }
+        } catch (exception: Exception) {
+            null
+        }
         return result != null
     }
 
+    private suspend fun isOIDC(endpoint: String): Boolean =
+        isOIDCInstalled(endpoint) && authConfig.realm.isBlank()
+
     /**
      * Return content service url based on [endpoint].
      */
@@ -110,6 +158,12 @@ class DiscoveryService(
             .appendPath(authConfig.contentServicePath)
             .build()
 
+    fun oidcUrl(endpoint: String): Uri =
+        PkceAuthService.endpointWith(endpoint, authConfig)
+            .buildUpon()
+            .appendPath("alfresco")
+            .build()
+
     private fun contentServiceDiscoveryUrl(endpoint: String): Uri =
         contentServiceUrl(endpoint)
             .buildUpon()

auth/src/main/java/com/alfresco/auth/data/AppConfigDetails.kt

@@ -0,0 +1,42 @@
+package com.alfresco.auth.data
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.json.Json
+
+@Serializable
+data class OAuth2Data(
+    val host: String,
+    val clientId: String,
+    val secret: String,
+    val scope: String,
+    val implicitFlow: Boolean,
+    val codeFlow: Boolean,
+    val silentLogin: Boolean,
+    val publicUrls: List<String>,
+    val redirectSilentIframeUri: String,
+    val redirectUri: String,
+    val logoutUrl: String,
+    val logoutParameters: List<String>,
+    val redirectUriLogout: String,
+    val audience: String,
+    val skipIssuerCheck: Boolean,
+    val strictDiscoveryDocumentValidation: Boolean
+)
+
+@Serializable
+internal data class AppConfigDetails(
+    val oauth2: OAuth2Data
+) {
+    companion object {
+        private val json = Json { ignoreUnknownKeys = true }
+
+        fun jsonDeserialize(str: String): AppConfigDetails? {
+            return try {
+                json.decodeFromString(serializer(), str)
+            } catch (ex: SerializationException) {
+                null
+            }
+        }
+    }
+}