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assets/webapps/email.gaiamobile.org/js/cards/oauth2/fetch.js

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+define([
+    'require',
+    'query_string',
+    'services',
+    'cards'
+], function (require) {
+    var queryString = require('query_string');
+    var services = require('services');
+    var cards = require('cards');
+    var oauthSecrets = services.oauth2;
+    var curOauthSecrets;
+    var redeemingCode = false;
+    var TIMEOUT_MS = 30 * 1000;
+    var redirectUri = 'http://localhost';
+    var deferred, p, oauthSettings;
+    function onBrowserComplete(message) {
+        var data = message.data;
+        if (message.type === 'oauth2Complete') {
+            if (!data.code) {
+                reset('reject', new Error('no code returned'));
+                return;
+            }
+            console.log('oauth redirect returned with code');
+            redeemingCode = true;
+            redeemCode(data.code).then(function (redeemed) {
+                var expiresInMS = parseInt(redeemed.expires_in, 10) * 1000;
+                var expireTimeMS = Date.now() + Math.max(0, expiresInMS - TIMEOUT_MS);
+                var result = {
+                    status: 'success',
+                    tokens: {
+                        accessToken: redeemed.access_token,
+                        refreshToken: redeemed.refresh_token,
+                        expireTimeMS: expireTimeMS
+                    },
+                    secrets: curOauthSecrets
+                };
+                reset('resolve', result);
+            }, function (err) {
+                reset('reject', err);
+            });
+        } else {
+            reset('resolve', { status: 'cancel' });
+        }
+    }
+    function redeemCode(code) {
+        console.log('redeeming oauth code');
+        return new Promise(function (xhrResolve, xhrReject) {
+            var xhr = new XMLHttpRequest({ mozSystem: true });
+            xhr.open('POST', oauthSettings.tokenEndpoint, true);
+            xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+            xhr.timeout = TIMEOUT_MS;
+            xhr.onload = function () {
+                if (xhr.status < 200 || xhr.status >= 300) {
+                    console.error('token redemption failed', xhr.status, xhr.responseText);
+                    xhrReject('status' + xhr.status);
+                } else {
+                    try {
+                        var data = JSON.parse(xhr.responseText);
+                        console.log('oauth code redeemed. access_token? ' + !!data.access_token + ', refresh_token? ' + !!data.refresh_token);
+                        xhrResolve(data);
+                    } catch (ex) {
+                        console.error('badly formed JSON response for token redemption:', xhr.responseText);
+                        xhrReject(ex);
+                    }
+                }
+            };
+            xhr.onerror = function (err) {
+                console.error('token redemption weird error:', err);
+                xhrReject(err);
+            };
+            xhr.ontimeout = function () {
+                console.error('token redemption timeout');
+                xhrReject('timeout');
+            };
+            var redemptionArgs = {
+                code: code,
+                client_id: curOauthSecrets.clientId,
+                client_secret: curOauthSecrets.clientSecret,
+                redirect_uri: redirectUri,
+                grant_type: 'authorization_code'
+            };
+            xhr.send(queryString.fromObject(redemptionArgs));
+        });
+    }
+    function reset(actionName, value) {
+        console.log('oauth2 fetch reset with action: ' + actionName);
+        var action = deferred[actionName];
+        deferred = p = null;
+        redeemingCode = false;
+        action(value);
+    }
+    return function oauth2Fetch(o2Settings, extraQueryObject) {
+        if (deferred) {
+            reset('reject', new Error('Multiple oauth calls, starting new one'));
+        }
+        p = new Promise(function (res, rej) {
+            deferred = {
+                resolve: res,
+                reject: rej
+            };
+        });
+        oauthSettings = o2Settings;
+        curOauthSecrets = undefined;
+        if (o2Settings.clientId && o2Settings.clientSecret) {
+            curOauthSecrets = {
+                clientId: o2Settings.clientId,
+                clientSecret: o2Settings.clientSecret
+            };
+        } else if (o2Settings.secretGroup) {
+            curOauthSecrets = oauthSecrets[o2Settings.secretGroup];
+        }
+        if (!curOauthSecrets) {
+            reset('reject', new Error('no secrets for group: ' + o2Settings.secretGroup));
+            return p;
+        }
+        var authEndpointQuery = {
+            client_id: curOauthSecrets.clientId,
+            redirect_uri: redirectUri,
+            response_type: 'code',
+            scope: o2Settings.scope,
+            max_auth_age: 0
+        };
+        var url = o2Settings.authEndpoint + '?' + queryString.fromObject(authEndpointQuery);
+        if (extraQueryObject) {
+            var extraArgs = queryString.fromObject(extraQueryObject);
+            if (extraArgs) {
+                url += '&' + extraArgs;
+            }
+        }
+        cards.pushCard('setup_oauth2', 'animate', {
+            url: url,
+            onBrowserComplete: onBrowserComplete
+        });
+        return p;
+    };
+});

assets/webapps/email.gaiamobile.org/js/cards/oauth2/redirect.html

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+<!DOCTYPE html>
+<html>
+  <head>
+    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1">
+    <meta charset="utf-8">
+  </head>
+  <body>
+  </body>
+</html>