gecko/browser/components/loop/GoogleImporter.jsm

547 lines
21 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/Timer.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Promise",
"resource://gre/modules/Promise.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Task",
"resource://gre/modules/Task.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Log",
"resource://gre/modules/Log.jsm");
this.EXPORTED_SYMBOLS = ["GoogleImporter"];
let log = Log.repository.getLogger("Loop.Importer.Google");
log.level = Log.Level.Debug;
log.addAppender(new Log.ConsoleAppender(new Log.BasicFormatter()));
/**
* Helper function that reads and maps the respective node value from specific
* XML DOMNodes to fields on a `target` object.
* Example: the value for field 'fullName' can be read from the XML DOMNode
* 'name', so that's the mapping we need to make; get the nodeValue of
* the node called 'name' and tack it to the target objects' 'fullName'
* property.
*
* @param {Map} fieldMap Map object containing the field name -> node
* name mapping
* @param {XMLDOMNode} node DOM node to fetch the values from for each field
* @param {String} ns XML namespace for the DOM nodes to retrieve. Optional.
* @param {Object} target Object to store the values found. Optional.
* Defaults to a new object.
* @param {Boolean} wrapInArray Indicates whether to map the field values in
* an Array. Optional. Defaults to `false`.
* @returns The `target` object with the node values mapped to the appropriate fields.
*/
const extractFieldsFromNode = function(fieldMap, node, ns = null, target = {}, wrapInArray = false) {
for (let [field, nodeName] of fieldMap) {
let nodeList = ns ? node.getElementsByTagNameNS(ns, nodeName) :
node.getElementsByTagName(nodeName);
if (nodeList.length) {
if (!nodeList[0].firstChild) {
continue;
}
let value = nodeList[0].firstChild.nodeValue;
target[field] = wrapInArray ? [value] : value;
}
}
return target;
};
/**
* Helper function that reads the type of (email-)address or phone number from an
* XMLDOMNode.
*
* @param {XMLDOMNode} node
* @returns String that depicts the type of field value.
*/
const getFieldType = function(node) {
if (node.hasAttribute("rel")) {
let rel = node.getAttribute("rel");
// The 'rel' attribute is formatted like: http://schemas.google.com/g/2005#work.
return rel.substr(rel.lastIndexOf("#") + 1);
}
if (node.hasAttribute("label")) {
return node.getAttribute("label");
}
return "other";
};
/**
* Fetch the preferred entry of a contact. Returns the first entry when no
* preferred flag is set.
*
* @param {Object} contact The contact object to check for preferred entries
* @param {String} which Type of entry to check. Optional, defaults to 'email'
* @throws An Error when no (preferred) entries are listed for this contact.
*/
const getPreferred = function(contact, which = "email") {
if (!(which in contact) || !contact[which].length) {
throw new Error("No " + which + " entry available.");
}
let preferred = contact[which][0];
contact[which].some(function(entry) {
if (entry.pref) {
preferred = entry;
return true;
}
return false;
});
return preferred;
};
/**
* Fetch an auth token (clientID or client secret), which may be overridden by
* a pref if it's set.
*
* @param {String} paramValue Initial, default, value of the parameter
* @param {String} prefName Fully qualified name of the pref to check for
* @param {Boolean} encode Whether to URLEncode the param string
*/
const getUrlParam = function(paramValue, prefName, encode = true) {
if (Services.prefs.getPrefType(prefName))
paramValue = Services.prefs.getCharPref(prefName);
paramValue = Services.urlFormatter.formatURL(paramValue);
return encode ? encodeURIComponent(paramValue) : paramValue;
};
let gAuthWindow, gProfileId;
const kAuthWindowSize = {
width: 420,
height: 460
};
const kContactsMaxResults = 10000000;
const kContactsChunkSize = 100;
const kTitlebarPollTimeout = 200;
const kNS_GD = "http://schemas.google.com/g/2005";
/**
* GoogleImporter class.
*
* Main entrypoint is the `startImport` method which calls several tasks necessary
* to import contacts from Google.
* Authentication is performed using an OAuth strategy which is loaded in a popup
* window.
*/
this.GoogleImporter = function() {};
this.GoogleImporter.prototype = {
/**
* Start the import process of contacts from the Google service, using its Contacts
* API - https://developers.google.com/google-apps/contacts/v3/.
* The import consists of four tasks:
* 1. Get the authentication code which can be used to retrieve an OAuth token
* pair. This is the bulk of the authentication flow that will be handled in
* a popup window by Google. The user will need to login to the Google service
* with his or her account and grant permission to our app to manage their
* contacts.
* 2. Get the tokenset from the Google service, using the authentication code
* that was retrieved in task 1.
* 3. Fetch all the contacts from the Google service, using the OAuth tokenset
* that was retrieved in task 2.
* 4. Process the contacts, map them to the MozContact format and store each
* contact in the database, if it doesn't exist yet.
*
* @param {Object} options Options to control the behavior of the import.
* Not used by this importer class.
* @param {Function} callback Function to invoke when the import process
* is done or when an error occurs that halts
* the import process. The first argument passed
* in an Error object or `null` and the second
* argument is an object with import statistics.
* @param {LoopContacts} db Instance of the LoopContacts database object,
* which will store the newly found contacts
* @param {nsIDomWindow} windowRef Reference to the ChromeWindow the import is
* invoked from. It will be used to be able to
* open a window for the OAuth process with chrome
* privileges.
*/
startImport: function(options, callback, db, windowRef) {
Task.spawn(function* () {
let code = yield this._promiseAuthCode(windowRef);
let tokenSet = yield this._promiseTokenSet(code);
let contactEntries = yield this._promiseContactEntries(tokenSet);
let {total, success, ids} = yield this._processContacts(contactEntries, db);
yield this._purgeContacts(ids, db);
return {
total: total,
success: success
};
}.bind(this)).then(stats => callback(null, stats),
error => callback(error))
.then(null, ex => log.error(ex.fileName + ":" + ex.lineNumber + ": " + ex.message));
},
/**
* Task that yields an authentication code that is returned after the user signs
* in to the Google service. This code can be used by this class to retrieve an
* OAuth tokenset.
*
* @param {nsIDOMWindow} windowRef Reference to the ChromeWindow the import is
* invoked from. It will be used to be able to
* open a window for the OAuth process with chrome
* privileges.
* @throws An `Error` object when authentication fails, or the authentication
* code as a String.
*/
_promiseAuthCode: Task.async(function* (windowRef) {
// Close a window that got lost in a previous login attempt.
if (gAuthWindow && !gAuthWindow.closed) {
gAuthWindow.close();
gAuthWindow = null;
}
let url = getUrlParam("https://accounts.google.com/o/oauth2/",
"loop.oauth.google.URL", false) +
"auth?response_type=code&client_id=" +
getUrlParam("%GOOGLE_OAUTH_API_CLIENTID%", "loop.oauth.google.clientIdOverride");
for (let param of ["redirect_uri", "scope"]) {
url += "&" + param + "=" + encodeURIComponent(
Services.prefs.getCharPref("loop.oauth.google." + param));
}
const features = "centerscreen,resizable=yes,toolbar=no,menubar=no,status=no,directories=no," +
"width=" + kAuthWindowSize.width + ",height=" + kAuthWindowSize.height;
gAuthWindow = windowRef.openDialog(windowRef.getBrowserURL(), "_blank", features, url);
gAuthWindow.focus();
let code;
// The following loops runs as long as the OAuth windows' titlebar doesn't
// yield a response from the Google service. If an error occurs, the loop
// will terminate early.
while (!code) {
if (!gAuthWindow || gAuthWindow.closed) {
throw new Error("Popup window was closed before authentication succeeded");
}
let matches = gAuthWindow.document.title.match(/(error|code)=([^\s]+)/);
if (matches && matches.length) {
let [, type, message] = matches;
gAuthWindow.close();
gAuthWindow = null;
if (type == "error") {
throw new Error("Google authentication failed with error: " + message.trim());
} else if (type == "code") {
code = message.trim();
} else {
throw new Error("Unknown response from Google");
}
} else {
yield new Promise(resolve => setTimeout(resolve, kTitlebarPollTimeout));
}
}
return code;
}),
/**
* Fetch an OAuth tokenset, that will be used to authenticate Google API calls,
* using the authentication token retrieved in `_promiseAuthCode`.
*
* @param {String} code The authentication code.
* @returns an `Error` object upon failure or an object containing OAuth tokens.
*/
_promiseTokenSet: function(code) {
return new Promise(function(resolve, reject) {
let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance(Ci.nsIXMLHttpRequest);
request.open("POST", getUrlParam("https://accounts.google.com/o/oauth2/",
"loop.oauth.google.URL",
false) + "token");
request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
request.onload = function() {
if (request.status < 400) {
let tokenSet = JSON.parse(request.responseText);
tokenSet.date = Date.now();
resolve(tokenSet);
} else {
reject(new Error(request.status + " " + request.statusText));
}
};
request.onerror = function(error) {
reject(error);
};
let body = "grant_type=authorization_code&code=" + encodeURIComponent(code) +
"&client_id=" + getUrlParam("%GOOGLE_OAUTH_API_CLIENTID%",
"loop.oauth.google.clientIdOverride") +
"&client_secret=" + getUrlParam("%GOOGLE_OAUTH_API_KEY%",
"loop.oauth.google.clientSecretOverride") +
"&redirect_uri=" + encodeURIComponent(Services.prefs.getCharPref(
"loop.oauth.google.redirect_uri"));
request.send(body);
});
},
/**
* Fetches all the contacts in a users' address book.
*
* @see https://developers.google.com/google-apps/contacts/v3/#retrieving_all_contacts
*
* @param {Object} tokenSet OAuth tokenset used to authenticate the request
* @returns An `Error` object upon failure or an Array of contact XML nodes.
*/
_promiseContactEntries: function(tokenSet) {
return new Promise(function(resolve, reject) {
let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance(Ci.nsIXMLHttpRequest);
request.open("GET", getUrlParam("https://www.google.com/m8/feeds/contacts/default/full",
"loop.oauth.google.getContactsURL",
false) + "?max-results=" + kContactsMaxResults);
request.setRequestHeader("Content-Type", "application/xml; charset=utf-8");
request.setRequestHeader("GData-Version", "3.0");
request.setRequestHeader("Authorization", "Bearer " + tokenSet.access_token);
request.onload = function() {
if (request.status < 400) {
let doc = request.responseXML;
// First get the profile id.
let currNode = doc.documentElement.firstChild;
while (currNode) {
if (currNode.nodeType == 1 && currNode.localName == "id") {
gProfileId = currNode.firstChild.nodeValue;
break;
}
currNode = currNode.nextSibling;
}
// Then kick of the importing of contact entries.
let entries = Array.prototype.slice.call(doc.querySelectorAll("entry"));
resolve(entries);
} else {
reject(new Error(request.status + " " + request.statusText));
}
};
request.onerror = function(error) {
reject(error);
}
request.send();
});
},
/**
* Process the contact XML nodes that Google provides, convert them to the MozContact
* format, check if the contact already exists in the database and when it doesn't,
* store it permanently.
* During this process statistics are collected about the amount of successful
* imports. The consumer of this class may use these statistics to inform the
* user.
*
* @param {Array} contactEntries List of XML DOMNodes contact entries.
* @param {LoopContacts} db Instance of the LoopContacts database
* object, which will store the newly found
* contacts.
* @returns An `Error` object upon failure or an Object with statistics in the
* following format: `{ total: 25, success: 13, ids: {} }`.
*/
_processContacts: Task.async(function* (contactEntries, db) {
let stats = {
total: contactEntries.length,
success: 0,
ids: {}
};
for (let entry of contactEntries) {
let contact = this._processContactFields(entry);
stats.ids[contact.id] = 1;
let existing = yield db.promise("getByServiceId", contact.id);
if (existing) {
yield db.promise("remove", existing._guid);
}
// If the contact contains neither email nor phone number, then it is not
// useful in the Loop address book: do not add.
if (!("email" in contact) && !("tel" in contact)) {
continue;
}
yield db.promise("add", contact);
stats.success++;
}
return stats;
}),
/**
* Parse an XML node to map the appropriate data to MozContact field equivalents.
*
* @param {XMLDOMNode} entry The contact XML node in Google format to process.
* @returns `null` if the contact entry appears to be invalid or an Object containing
* all the contact data found in the XML.
*/
_processContactFields: function(entry) {
// Basic fields in the main 'atom' namespace.
let contact = extractFieldsFromNode(new Map([
["id", "id"],
// published: n/a
["updated", "updated"]
// bday: n/a
]), entry);
// Fields that need to wrapped in an Array.
extractFieldsFromNode(new Map([
["name", "fullName"],
["givenName", "givenName"],
["familyName", "familyName"],
["additionalName", "additionalName"]
]), entry, kNS_GD, contact, true);
// The 'note' field needs to wrapped in an array, but its source node is not
// namespaced.
extractFieldsFromNode(new Map([
["note", "content"]
]), entry, null, contact, true);
// Process physical, earthly addresses.
let addressNodes = entry.getElementsByTagNameNS(kNS_GD, "structuredPostalAddress");
if (addressNodes.length) {
contact.adr = [];
for (let [,addressNode] of Iterator(addressNodes)) {
let adr = extractFieldsFromNode(new Map([
["countryName", "country"],
["locality", "city"],
["postalCode", "postcode"],
["region", "region"],
["streetAddress", "street"]
]), addressNode, kNS_GD);
if (Object.keys(adr).length) {
adr.pref = (addressNode.getAttribute("primary") == "true");
adr.type = [getFieldType(addressNode)];
contact.adr.push(adr);
}
}
}
// Process email addresses.
let emailNodes = entry.getElementsByTagNameNS(kNS_GD, "email");
if (emailNodes.length) {
contact.email = [];
for (let [,emailNode] of Iterator(emailNodes)) {
contact.email.push({
pref: (emailNode.getAttribute("primary") == "true"),
type: [getFieldType(emailNode)],
value: emailNode.getAttribute("address")
});
}
}
// Process telephone numbers.
let phoneNodes = entry.getElementsByTagNameNS(kNS_GD, "phoneNumber");
if (phoneNodes.length) {
contact.tel = [];
for (let [,phoneNode] of Iterator(phoneNodes)) {
let phoneNumber = phoneNode.hasAttribute("uri") ?
phoneNode.getAttribute("uri").replace("tel:", "") :
phoneNode.firstChild.nodeValue;
contact.tel.push({
pref: (phoneNode.getAttribute("primary") == "true"),
type: [getFieldType(phoneNode)],
value: phoneNumber
});
}
}
let orgNodes = entry.getElementsByTagNameNS(kNS_GD, "organization");
if (orgNodes.length) {
contact.org = [];
contact.jobTitle = [];
for (let [,orgNode] of Iterator(orgNodes)) {
let orgElement = orgNode.getElementsByTagNameNS(kNS_GD, "orgName")[0];
let titleElement = orgNode.getElementsByTagNameNS(kNS_GD, "orgTitle")[0];
contact.org.push(orgElement ? orgElement.firstChild.nodeValue : "")
contact.jobTitle.push(titleElement ? titleElement.firstChild.nodeValue : "");
}
}
contact.category = ["google"];
// Basic sanity checking: make sure the name field isn't empty
if (!("name" in contact) || contact.name[0].length == 0) {
if (("familyName" in contact) && ("givenName" in contact)) {
// First, try to synthesize a full name from the name fields.
// Ordering is culturally sensitive, but we don't have
// cultural origin information available here. The best we
// can really do is "family, given additional"
contact.name = [contact.familyName[0] + ", " + contact.givenName[0]];
if (("additionalName" in contact)) {
contact.name[0] += " " + contact.additionalName[0];
}
} else {
let profileTitle = extractFieldsFromNode(new Map([["title", "title"]]), entry);
if (("title" in profileTitle)) {
contact.name = [profileTitle.title];
} else if ("familyName" in contact) {
contact.name = [contact.familyName[0]];
} else if ("givenName" in contact) {
contact.name = [contact.givenName[0]];
} else if ("org" in contact) {
contact.name = [contact.org[0]];
} else {
let email;
try {
email = getPreferred(contact);
} catch (ex) {}
if (email) {
contact.name = [email.value];
} else {
let tel;
try {
tel = getPreferred(contact, "tel");
} catch (ex) {}
if (tel) {
contact.name = [tel.value];
}
}
}
}
}
return contact;
},
/**
* Remove all contacts from the database that are not present anymore in the
* remote data-source.
*
* @param {Object} ids Map of IDs collected earlier of all the contacts
* that are available on the remote data-source
* @param {LoopContacts} db Instance of the LoopContacts database object, which
* will store the newly found contacts
*/
_purgeContacts: Task.async(function* (ids, db) {
let contacts = yield db.promise("getAll");
let profileId = "https://www.google.com/m8/feeds/contacts/" + encodeURIComponent(gProfileId);
let processed = 0;
for (let [guid, contact] of Iterator(contacts)) {
if (++processed % kContactsChunkSize === 0) {
// Skip a beat every time we processed a chunk.
yield new Promise(resolve => Services.tm.currentThread.dispatch(resolve,
Ci.nsIThread.DISPATCH_NORMAL));
}
if (contact.id.indexOf(profileId) >= 0 && !ids[contact.id]) {
yield db.promise("remove", guid);
}
}
})
};