Add login fallback

synapse/static/client/login/js/login.js

@@ -0,0 +1,169 @@
+window.matrixLogin = {
+    endpoint: location.origin + "/_matrix/client/api/v1/login",
+    serverAcceptsPassword: false,
+    serverAcceptsCas: false
+};
+
+var submitPassword = function(user, pwd) {
+    console.log("Logging in with password...");
+    var data = {
+        type: "m.login.password",
+        user: user,
+        password: pwd,
+    };
+    $.post(matrixLogin.endpoint, JSON.stringify(data), function(response) {
+        show_login();
+        matrixLogin.onLogin(response);
+    }).error(errorFunc);
+};
+
+var submitCas = function(ticket, service) {
+    console.log("Logging in with cas...");
+    var data = {
+        type: "m.login.cas",
+        ticket: ticket,
+        service: service,
+    };
+    $.post(matrixLogin.endpoint, JSON.stringify(data), function(response) {
+        show_login();
+        matrixLogin.onLogin(response);
+    }).error(errorFunc);
+};
+
+var errorFunc = function(err) {
+    show_login();
+
+    if (err.responseJSON && err.responseJSON.error) {
+        setFeedbackString(err.responseJSON.error + " (" + err.responseJSON.errcode + ")");
+    }
+    else {
+        setFeedbackString("Request failed: " + err.status);
+    }
+};
+
+var getCasURL = function(cb) {
+    $.get(matrixLogin.endpoint + "/cas", function(response) {
+        var cas_url = response.serverUrl;
+
+        cb(cas_url);
+    }).error(errorFunc);
+};
+
+
+var gotoCas = function() {
+    getCasURL(function(cas_url) {
+        var this_page = window.location.origin + window.location.pathname;
+
+        var redirect_url = cas_url + "/login?service=" + encodeURIComponent(this_page);
+
+        window.location.replace(redirect_url);
+    });
+}
+
+var setFeedbackString = function(text) {
+    $("#feedback").text(text);
+};
+
+var show_login = function() {
+    $("#loading").hide();
+
+    if (matrixLogin.serverAcceptsPassword) {
+        $("#password_form").show();
+    }
+
+    if (matrixLogin.serverAcceptsCas) {
+        $("#cas_flow").show();
+    }
+
+    if (!matrixLogin.serverAcceptsPassword && !matrixLogin.serverAcceptsCas) {
+        $("#no_login_types").show();
+    }
+};
+
+var show_spinner = function() {
+    $("#password_form").hide();
+    $("#cas_flow").hide();
+    $("#no_login_types").hide();
+    $("#loading").show();
+};
+
+
+var fetch_info = function(cb) {
+    $.get(matrixLogin.endpoint, function(response) {
+        var serverAcceptsPassword = false;
+        var serverAcceptsCas = false;
+        for (var i=0; i<response.flows.length; i++) {
+            var flow = response.flows[i];
+            if ("m.login.cas" === flow.type) {
+                matrixLogin.serverAcceptsCas = true;
+                console.log("Server accepts CAS");
+            }
+
+            if ("m.login.password" === flow.type) {
+                matrixLogin.serverAcceptsPassword = true;
+                console.log("Server accepts password");
+            }
+        }
+
+        cb();
+    }).error(errorFunc);
+}
+
+matrixLogin.onLoad = function() {
+    fetch_info(function() {
+        if (!try_cas()) {
+            show_login();
+        }
+    });
+};
+
+matrixLogin.password_login = function() {
+    var user = $("#user_id").val();
+    var pwd = $("#password").val();
+
+    setFeedbackString("");
+
+    show_spinner();
+    submitPassword(user, pwd);
+};
+
+matrixLogin.onLogin = function(response) {
+    // clobber this function
+    console.log("onLogin - This function should be replaced to proceed.");
+    console.log(response);
+};
+
+var parseQsFromUrl = function(query) {
+    var result = {};
+    query.split("&").forEach(function(part) {
+        var item = part.split("=");
+        var key = item[0];
+        var val = item[1];
+
+        if (val) {
+            val = decodeURIComponent(val);
+        }
+        result[key] = val
+    });
+    return result;
+};
+
+var try_cas = function() {
+    var pos = window.location.href.indexOf("?");
+    if (pos == -1) {
+        return false;
+    }
+    var qs = parseQsFromUrl(window.location.href.substr(pos+1));
+
+    var ticket = qs.ticket;
+
+    if (!ticket) {
+        return false;
+    }
+
+    getCasURL(function(url) {
+        submitCas(ticket, url);
+    });
+
+    return true;
+};