Enable EmailAuth support.

app/src/main/java/fr/free/nrw/commons/auth/LoginActivity.kt

@@ -65,6 +65,7 @@ class LoginActivity : AccountAuthenticatorActivity() {
     private val delegate: AppCompatDelegate by lazy {
         AppCompatDelegate.create(this, null)
     }
+    private var lastLoginResult: LoginResult? = null
 
     public override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -271,6 +272,7 @@ class LoginActivity : AccountAuthenticatorActivity() {
         showLoggingProgressBar()
         loginClient.doLogin(username,
             password,
+            lastLoginResult,
             twoFactorCode,
             Locale.getDefault().language,
             object : LoginCallback {
@@ -280,9 +282,17 @@ class LoginActivity : AccountAuthenticatorActivity() {
                     onLoginSuccess(loginResult)
                 }
 
-                override fun twoFactorPrompt(caught: Throwable, token: String?) = runOnUiThread {
+                override fun twoFactorPrompt(loginResult: LoginResult, caught: Throwable, token: String?) = runOnUiThread {
                     Timber.d("Requesting 2FA prompt")
                     progressDialog!!.dismiss()
+                    lastLoginResult = loginResult
+                    askUserForTwoFactorAuth()
+                }
+
+                override fun emailAuthPrompt(loginResult: LoginResult, caught: Throwable, token: String?) {
+                    Timber.d("Requesting email auth prompt")
+                    progressDialog!!.dismiss()
+                    lastLoginResult = loginResult
                     askUserForTwoFactorAuth()
                 }
 
@@ -341,12 +351,13 @@ class LoginActivity : AccountAuthenticatorActivity() {
         progressDialog!!.dismiss()
         with(binding!!) {
             twoFactorContainer.visibility = View.VISIBLE
+            twoFactorContainer.hint = getString(if (lastLoginResult is LoginResult.EmailAuthResult) R.string.email_auth_code else R.string._2fa_code)
             loginTwoFactor.visibility = View.VISIBLE
             loginTwoFactor.requestFocus()
         }
         val imm = getSystemService(INPUT_METHOD_SERVICE) as InputMethodManager
         imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY)
-        showMessageAndCancelDialog(R.string.login_failed_2fa_needed)
+        showMessageAndCancelDialog(getString(if (lastLoginResult is LoginResult.EmailAuthResult) R.string.login_failed_email_auth_needed else R.string.login_failed_2fa_needed))
     }
 
     @VisibleForTesting

app/src/main/java/fr/free/nrw/commons/auth/csrf/CsrfTokenClient.kt

@@ -32,7 +32,7 @@ class CsrfTokenClient(
             try {
                 if (retry > 0) {
                     // Log in explicitly
-                    loginClient.loginBlocking(userName, password, "")
+                    loginClient.loginBlocking(userName, password)
                 }
 
                 // Get CSRFToken response off the main thread.
@@ -92,6 +92,8 @@ class CsrfTokenClient(
                 override fun failure(caught: Throwable?) = retryWithLogin(cb) { caught }
 
                 override fun twoFactorPrompt() = cb.twoFactorPrompt()
+
+                override fun emailAuthPrompt() = cb.emailAuthPrompt()
             },
         )
 
@@ -165,10 +167,17 @@ class CsrfTokenClient(
             }
 
             override fun twoFactorPrompt(
+                loginResult: LoginResult,
                 caught: Throwable,
                 token: String?,
             ) = callback.twoFactorPrompt()
 
+            override fun emailAuthPrompt(
+                loginResult: LoginResult,
+                caught: Throwable,
+                token: String?,
+            ) = callback.emailAuthPrompt()
+
             // Should not happen here, but call the callback just in case.
             override fun passwordResetPrompt(token: String?) = callback.failure(LoginFailedException("Logged in with temporary password."))
 
@@ -190,6 +199,8 @@ class CsrfTokenClient(
         fun failure(caught: Throwable?)
 
         fun twoFactorPrompt()
+
+        fun emailAuthPrompt()
     }
 
     companion object {

app/src/main/java/fr/free/nrw/commons/auth/login/LoginCallback.kt

@@ -4,6 +4,13 @@ interface LoginCallback {
     fun success(loginResult: LoginResult)
 
     fun twoFactorPrompt(
+        loginResult: LoginResult,
+        caught: Throwable,
+        token: String?,
+    )
+
+    fun emailAuthPrompt(
+        loginResult: LoginResult,
         caught: Throwable,
         token: String?,
     )

app/src/main/java/fr/free/nrw/commons/auth/login/LoginClient.kt

@@ -1,6 +1,7 @@
 package fr.free.nrw.commons.auth.login
 
 import android.text.TextUtils
+import fr.free.nrw.commons.auth.login.LoginResult.EmailAuthResult
 import fr.free.nrw.commons.auth.login.LoginResult.OAuthResult
 import fr.free.nrw.commons.auth.login.LoginResult.ResetPasswordResult
 import fr.free.nrw.commons.wikidata.WikidataConstants.WIKIPEDIA_URL
@@ -51,6 +52,7 @@ class LoginClient(
                         password,
                         null,
                         null,
+                        null,
                         response.body()!!.query()!!.loginToken(),
                         userLanguage,
                         cb,
@@ -75,6 +77,7 @@ class LoginClient(
         password: String,
         retypedPassword: String?,
         twoFactorCode: String?,
+        emailAuthCode: String?,
         loginToken: String?,
         userLanguage: String,
         cb: LoginCallback,
@@ -82,7 +85,7 @@ class LoginClient(
         this.userLanguage = userLanguage
 
         loginCall =
-            if (twoFactorCode.isNullOrEmpty() && retypedPassword.isNullOrEmpty()) {
+            if (twoFactorCode.isNullOrEmpty() && emailAuthCode.isNullOrEmpty() && retypedPassword.isNullOrEmpty()) {
                 loginInterface.postLogIn(userName, password, loginToken, userLanguage, WIKIPEDIA_URL)
             } else {
                 loginInterface.postLogIn(
@@ -90,6 +93,7 @@ class LoginClient(
                     password,
                     retypedPassword,
                     twoFactorCode,
+                    emailAuthCode,
                     loginToken,
                     userLanguage,
                     true,
@@ -112,10 +116,18 @@ class LoginClient(
                             when (loginResult) {
                                 is OAuthResult ->
                                     cb.twoFactorPrompt(
+                                        loginResult,
                                         LoginFailedException(loginResult.message),
                                         loginToken,
                                     )
 
+                                is EmailAuthResult ->
+                                    cb.emailAuthPrompt(
+                                        loginResult,
+                                        LoginFailedException(loginResult.message),
+                                        loginToken
+                                    )
+
                                 is ResetPasswordResult -> cb.passwordResetPrompt(loginToken)
 
                                 is LoginResult.Result ->
@@ -147,6 +159,7 @@ class LoginClient(
     fun doLogin(
         username: String,
         password: String,
+        lastLoginResult: LoginResult?,
         twoFactorCode: String,
         userLanguage: String,
         loginCallback: LoginCallback,
@@ -159,7 +172,10 @@ class LoginClient(
                 ) = if (response.isSuccessful) {
                     val loginToken = response.body()?.query()?.loginToken()
                     loginToken?.let {
-                        login(username, password, null, twoFactorCode, it, userLanguage, loginCallback)
+                        login(username, password, null,
+                            if (lastLoginResult is OAuthResult) twoFactorCode else null,
+                            if (lastLoginResult is EmailAuthResult) twoFactorCode else null,
+                            it, userLanguage, loginCallback)
                     } ?: run {
                         loginCallback.error(IOException("Failed to retrieve login token"))
                     }
@@ -181,7 +197,8 @@ class LoginClient(
     fun loginBlocking(
         userName: String,
         password: String,
-        twoFactorCode: String?,
+        twoFactorCode: String? = null,
+        emailAuthCode: String? = null
     ) {
         val tokenResponse = getLoginToken().execute()
         if (tokenResponse
@@ -195,7 +212,7 @@ class LoginClient(
 
         val loginToken = tokenResponse.body()?.query()?.loginToken()
         val tempLoginCall =
-            if (twoFactorCode.isNullOrEmpty()) {
+            if (twoFactorCode.isNullOrEmpty() && emailAuthCode.isNullOrEmpty()) {
                 loginInterface.postLogIn(userName, password, loginToken, userLanguage, WIKIPEDIA_URL)
             } else {
                 loginInterface.postLogIn(
@@ -203,6 +220,7 @@ class LoginClient(
                     password,
                     null,
                     twoFactorCode,
+                    emailAuthCode,
                     loginToken,
                     userLanguage,
                     true,
@@ -214,7 +232,7 @@ class LoginClient(
         val loginResult = loginResponse.toLoginResult(password) ?: throw IOException("Unexpected response when logging in.")
 
         if ("UI" == loginResult.status) {
-            if (loginResult is OAuthResult) {
+            if (loginResult is OAuthResult || loginResult is EmailAuthResult) {
                 // TODO: Find a better way to boil up the warning about 2FA
                 throw LoginFailedException(loginResult.message)
             }

app/src/main/java/fr/free/nrw/commons/auth/login/LoginInterface.kt

@@ -35,7 +35,8 @@ interface LoginInterface {
         @Field("password") pass: String?,
         @Field("retype") retypedPass: String?,
         @Field("OATHToken") twoFactorCode: String?,
-        @Field("logintoken") token: String?,
+        @Field("token") emailAuthToken: String?,
+        @Field("logintoken") loginToken: String?,
         @Field("uselang") userLanguage: String?,
         @Field("logincontinue") loginContinue: Boolean,
     ): Call<LoginResponse?>

app/src/main/java/fr/free/nrw/commons/auth/login/LoginResponse.kt

@@ -2,6 +2,7 @@ package fr.free.nrw.commons.auth.login
 
 import com.google.gson.annotations.SerializedName
 import fr.free.nrw.commons.auth.login.LoginResult.OAuthResult
+import fr.free.nrw.commons.auth.login.LoginResult.EmailAuthResult
 import fr.free.nrw.commons.auth.login.LoginResult.ResetPasswordResult
 import fr.free.nrw.commons.auth.login.LoginResult.Result
 import fr.free.nrw.commons.wikidata.mwapi.MwServiceError
@@ -27,11 +28,13 @@ internal class ClientLogin {
     fun toLoginResult(password: String): LoginResult {
         var userMessage = message
         if ("UI" == status) {
-            if (requests != null) {
+            requests?.forEach { request ->
-                for (req in requests) {
+                request.id()?.let {
-                    if ("MediaWiki\\Extension\\OATHAuth\\Auth\\TOTPAuthenticationRequest" == req.id()) {
+                    if (it.endsWith("TOTPAuthenticationRequest")) {
                         return OAuthResult(status, userName, password, message)
-                    } else if ("MediaWiki\\Auth\\PasswordAuthenticationRequest" == req.id()) {
+                    } else if (it.endsWith("EmailAuthAuthenticationRequest")) {
+                        return EmailAuthResult(status, userName, password, message)
+                    } else if (it.endsWith("PasswordAuthenticationRequest")) {
                         return ResetPasswordResult(status, userName, password, message)
                     }
                 }
@@ -49,7 +52,7 @@ internal class Request {
     private val required: String? = null
     private val provider: String? = null
     private val account: String? = null
-    private val fields: Map<String, RequestField>? = null
+    internal val fields: Map<String, RequestField>? = null
 
     fun id(): String? = id
 }
@@ -57,5 +60,5 @@ internal class Request {
 internal class RequestField {
     private val type: String? = null
     private val label: String? = null
-    private val help: String? = null
+    internal val help: String? = null
 }

app/src/main/java/fr/free/nrw/commons/auth/login/LoginResult.kt

@@ -24,6 +24,13 @@ sealed class LoginResult(
         message: String?,
     ) : LoginResult(status, userName, password, message)
 
+    class EmailAuthResult(
+        status: String,
+        userName: String?,
+        password: String?,
+        message: String?,
+    ) : LoginResult(status, userName, password, message)
+
     class ResetPasswordResult(
         status: String,
         userName: String?,

app/src/main/res/layout/activity_login.xml

@@ -146,6 +146,7 @@
             android:layout_marginEnd="@dimen/standard_gap"
             android:layout_marginRight="@dimen/standard_gap"
             android:layout_marginBottom="@dimen/standard_gap"
+            android:hint="@string/_2fa_code"
             android:visibility="gone"
             app:passwordToggleEnabled="false"
             tools:visibility="visible">
@@ -154,9 +155,7 @@
               android:id="@+id/login_two_factor"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
-              android:hint="@string/_2fa_code"
               android:imeOptions="flagNoExtractUi"
-              android:inputType="number"
               android:visibility="gone"
               tools:visibility="visible" />
 

app/src/main/res/values/strings.xml

@@ -111,6 +111,7 @@
   <string name="login_failed_throttled">Too many unsuccessful attempts. Please try again in a few minutes.</string>
   <string name="login_failed_blocked">Sorry, this user has been blocked on Commons</string>
   <string name="login_failed_2fa_needed">You must provide your two factor authentication code.</string>
+  <string name="login_failed_email_auth_needed">A login verification code has been sent to your email address. Please provide the code to log in.</string>
   <string name="login_failed_generic">Log-in failed</string>
   <string name="share_upload_button">Upload</string>
   <string name="multiple_share_base_title">Name this set</string>
@@ -218,6 +219,7 @@
   <string name="become_a_tester_description">Opt-in to our beta channel on Google Play and get early access to new features and bug fixes</string>
   <string name="beta_opt_in_link">https://play.google.com/apps/testing/fr.free.nrw.commons</string>
   <string name="_2fa_code">2FA Code</string>
+  <string name="email_auth_code">Email verification code</string>
   <string name="logout_verification">Do you really want to logout?</string>
   <string name="mediaimage_failed">Media Image Failed</string>
   <string name="no_subcategory_found">No subcategories found</string>