Bug 1070115 - pass the uid and email address of the current FxA user to the account manage url. r=zaach

browser/components/preferences/in-content/sync.js

@@ -573,8 +573,12 @@ let gSyncPane = {
   },
 
   manageFirefoxAccount: function() {
-    let url = Services.prefs.getCharPref("identity.fxaccounts.settings.uri");
-    this.openContentInBrowser(url);
+    fxAccounts.promiseAccountsManageURI()
+      .then(url => {
+        this.openContentInBrowser(url, {
+          replaceQueryString: true
+        });
+      });
   },
 
   verifyFirefoxAccount: function() {

browser/components/preferences/sync.js

@@ -405,8 +405,12 @@ let gSyncPane = {
   },
 
   manageFirefoxAccount: function() {
-    let url = Services.prefs.getCharPref("identity.fxaccounts.settings.uri");
-    this.openContentInBrowser(url);
+    fxAccounts.promiseAccountsManageURI()
+      .then(url => {
+        this.openContentInBrowser(url, {
+          replaceQueryString: true
+        });
+      });
   },
 
   verifyFirefoxAccount: function() {

services/fxaccounts/FxAccounts.jsm

@@ -45,6 +45,7 @@ let publicProperties = [
   "now",
   "promiseAccountsForceSigninURI",
   "promiseAccountsChangeProfileURI",
+  "promiseAccountsManageURI",
   "removeCachedOAuthToken",
   "resendVerificationEmail",
   "setSignedInUser",
@@ -1217,6 +1218,28 @@ FxAccountsInternal.prototype = {
     }).then(result => currentState.resolve(result));
   },
 
+  // Returns a promise that resolves with the URL to use to manage the current
+  // user's FxA acct.
+  promiseAccountsManageURI: function() {
+    let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.settings.uri");
+    if (this._requireHttps() && !/^https:/.test(url)) { // Comment to un-break emacs js-mode highlighting
+      throw new Error("Firefox Accounts server must use HTTPS");
+    }
+    let currentState = this.currentAccountState;
+    // but we need to append the uid and email address onto a query string
+    // (if the server has no matching uid it will offer to sign in with the
+    // email address)
+    return this.getSignedInUser().then(accountData => {
+      if (!accountData) {
+        return null;
+      }
+      let newQueryPortion = url.indexOf("?") == -1 ? "?" : "&";
+      newQueryPortion += "uid=" + encodeURIComponent(accountData.uid) +
+                         "&email=" + encodeURIComponent(accountData.email);
+      return url + newQueryPortion;
+    }).then(result => currentState.resolve(result));
+  },
+
   /**
    * Get an OAuth token for the user
    *