Merge pull request #9892 from vector-im/travis/check-login-for-config

Use the user's pre-existing HS when config validation fails

src/i18n/strings/en_EN.json

@@ -1,5 +1,6 @@
 {
     "Unexpected error preparing the app. See console for details.": "Unexpected error preparing the app. See console for details.",
+    "This installation of Riot seems to have an invalid server configuration. If you are the administrator, please correct the error below": "This installation of Riot seems to have an invalid server configuration. If you are the administrator, please correct the error below",
     "Invalid configuration: can only specify one of default_server_config, default_server_name, or default_hs_url.": "Invalid configuration: can only specify one of default_server_config, default_server_name, or default_hs_url.",
     "Invalid configuration: no default server specified.": "Invalid configuration: no default server specified.",
     "Riot Desktop on %(platformName)s": "Riot Desktop on %(platformName)s",

src/vector/index.js

@@ -48,6 +48,7 @@ import * as languageHandler from 'matrix-react-sdk/lib/languageHandler';
 import {_t, _td, newTranslatableError} from 'matrix-react-sdk/lib/languageHandler';
 import AutoDiscoveryUtils from 'matrix-react-sdk/lib/utils/AutoDiscoveryUtils';
 import {AutoDiscovery} from "matrix-js-sdk/lib/autodiscovery";
+import * as Lifecycle from "matrix-react-sdk/lib/Lifecycle";
 
 import url from 'url';
 
@@ -365,8 +366,17 @@ async function loadApp() {
         }).catch(err => {
             console.error(err);
 
-            const errorMessage = err.translatedMessage
+            let errorMessage = err.translatedMessage
                 || _t("Unexpected error preparing the app. See console for details.");
+            errorMessage = <span>
+                {_t(
+                    "This installation of Riot seems to have an invalid server configuration. " +
+                    "If you are the administrator, please correct the error below",
+                )}
+                <br />
+                <br />
+                {errorMessage}
+            </span>;
 
             // Like the compatibility page, AWOOOOOGA at the user
             const GenericErrorPage = sdk.getComponent("structures.GenericErrorPage");
@@ -447,6 +457,8 @@ async function loadLanguage() {
 }
 
 async function verifyServerConfig() {
+    let validatedConfig;
+    try {
         console.log("Verifying homeserver configuration");
 
         // Note: the query string may include is_url and hs_url - we only respect these in the
@@ -461,12 +473,14 @@ async function verifyServerConfig() {
 
         const incompatibleOptions = [wkConfig, serverName, hsUrl].filter(i => !!i);
         if (incompatibleOptions.length > 1) {
+            // noinspection ExceptionCaughtLocallyJS
             throw newTranslatableError(_td(
                 "Invalid configuration: can only specify one of default_server_config, default_server_name, " +
                 "or default_hs_url.",
             ));
         }
         if (incompatibleOptions.length < 1) {
+            // noinspection ExceptionCaughtLocallyJS
             throw newTranslatableError(_td("Invalid configuration: no default server specified."));
         }
 
@@ -485,19 +499,33 @@ async function verifyServerConfig() {
             }
         }
 
-    let result = null;
+        let discoveryResult = null;
-
         if (wkConfig) {
             console.log("Config uses a default_server_config - validating object");
-        result = await AutoDiscovery.fromDiscoveryConfig(wkConfig);
+            discoveryResult = await AutoDiscovery.fromDiscoveryConfig(wkConfig);
         }
 
         if (serverName) {
             console.log("Config uses a default_server_name - doing .well-known lookup");
-        result = await AutoDiscovery.findClientConfig(serverName);
+            discoveryResult = await AutoDiscovery.findClientConfig(serverName);
         }
 
-    const validatedConfig = AutoDiscoveryUtils.buildValidatedConfigFromDiscovery(serverName, result);
+        validatedConfig = AutoDiscoveryUtils.buildValidatedConfigFromDiscovery(serverName, discoveryResult);
+    } catch (e) {
+        const {hsUrl, isUrl, userId} = Lifecycle.getLocalStorageSessionVars();
+        if (hsUrl && userId) {
+            console.error(e);
+            console.warn("A session was found - suppressing config error and using the session's homeserver");
+
+            console.log("Using pre-existing hsUrl and isUrl: ", {hsUrl, isUrl});
+            validatedConfig = await AutoDiscoveryUtils.validateServerConfigWithStaticUrls(hsUrl, isUrl);
+        } else {
+            // the user is not logged in, so scream
+            throw e;
+        }
+    }
+
+
     validatedConfig.isDefault = true;
 
     // Just in case we ever have to debug this