Password manager should have mode to display saved password.

bug 78754, patch by vdvo@vdvo.net, r=neil, sr=bryner

extensions/wallet/signonviewer/resources/content/SignonViewer.js

@@ -54,6 +54,7 @@ var isPasswordManager = (window.arguments[0] == "S");
 
 // variables for encryption
 var encrypted = "";
+var showingPasswords = false;
 
 function Startup() {
 
@@ -110,6 +111,8 @@ function Startup() {
     }
     LoadRejects();
 
+    // label the show/hide password button
+    document.getElementById("togglePasswords").label = kSignonBundle.getString(showingPasswords ? "hidePasswords" : "showPasswords");
   } else {
 
     nopreviewsTree = document.getElementById("nopreviewsTree");
@@ -178,6 +181,7 @@ var signonReloadDisplay = {
         gSelectUserInUse = true;
         document.getElementById("removeSignon").disabled = true;
         document.getElementById("removeAllSignons").disabled = true;
+        document.getElementById("togglePasswords").disabled = true;
       } else if (state == "resume") {
         gSelectUserInUse = false;
         var selections = GetTreeSelections(signonsTree);
@@ -186,6 +190,7 @@ var signonReloadDisplay = {
         }
         if (signons.length > 0) {
           document.getElementById("removeAllSignons").disabled = false;
+          document.getElementById("togglePasswords").disabled = false;
         }
       } else if (state == "inUse") {
         gSelectUserInUse = true;
@@ -198,34 +203,37 @@ var signonReloadDisplay = {
 
 var signonsTreeView = {
   rowCount : 0,
-  setTree : function(tree){},
+  setTree : function(tree) {},
   getImageSrc : function(row,column) {},
   getProgressMode : function(row,column) {},
   getCellValue : function(row,column) {},
-  getCellText : function(row,column){
+  getCellText : function(row,column) {
     var rv="";
     if (column=="siteCol") {
       rv = signons[row].host;
     } else if (column=="userCol") {
       rv = signons[row].user;
+    } else if (column=="passwordCol") {
+      rv = signons[row].password;
     }
     return rv;
   },
-  isSeparator : function(index) {return false;},
-  isSorted: function() { return false; },
-  isContainer : function(index) {return false;},
+  isSeparator : function(index) { return false; },
+  isSorted : function() { return false; },
+  isContainer : function(index) { return false; },
   cycleHeader : function(aColId, aElt) {},
-  getRowProperties : function(row,column,prop){},
-  getColumnProperties : function(column,columnElement,prop){},
-  getCellProperties : function(row,prop){}
+  getRowProperties : function(row,column,prop) {},
+  getColumnProperties : function(column,columnElement,prop) {},
+  getCellProperties : function(row,prop) {}
  };
 var signonsTree;
 
-function Signon(number, host, user, rawuser) {
+function Signon(number, host, user, rawuser, password) {
   this.number = number;
   this.host = host;
   this.user = user;
   this.rawuser = rawuser;
+  this.password = password;
 }
 
 function LoadSignons() {
@@ -241,22 +249,19 @@ function LoadSignons() {
       nextPassword = nextPassword.QueryInterface(Components.interfaces.nsIPassword);
       var host = nextPassword.host;
       var user = nextPassword.user;
+      var password = nextPassword.password;
       var rawuser = user;
 
       // if no username supplied, try to parse it out of the url
       if (user == "") {
-        var unused = { };
         var ioService = Components.classes["@mozilla.org/network/io-service;1"]
                       .getService(Components.interfaces.nsIIOService);
-        var username;
         try {
-          username = ioService.newURI(host, null, null).username;
+          user = ioService.newURI(host, null, null).username;
+          if (user == "") {
+            user = "<>";
+          }
         } catch(e) {
-          username = "";
-        }
-        if (username != "") {
-          user = username;
-        } else {
           user = "<>";
         }
       }
@@ -265,7 +270,7 @@ function LoadSignons() {
         user = kSignonBundle.getFormattedString("encrypted", [user], 1);
       }
 
-      signons[count] = new Signon(count++, host, user, rawuser);
+      signons[count] = new Signon(count++, host, user, rawuser, password);
     } catch(e) {
       /* An entry is corrupt. Go to next element. */
     }
@@ -278,10 +283,13 @@ function LoadSignons() {
 
   // disable "remove all signons" button if there are no signons
   var element = document.getElementById("removeAllSignons");
+  var toggle = document.getElementById("togglePasswords")
   if (signons.length == 0 || gSelectUserInUse) {
     element.setAttribute("disabled","true");
+    toggle.setAttribute("disabled","true");
   } else {
     element.removeAttribute("disabled");
+    toggle.removeAttribute("disabled");
   }
  
   return true;
@@ -308,6 +316,57 @@ function DeleteAllSignons() {
   FinalizeSignonDeletions();
 }
 
+function TogglePasswordVisible() {
+  if (!showingPasswords && !ConfirmShowPasswords())
+    return;
+
+  showingPasswords = !showingPasswords;
+  document.getElementById("togglePasswords").label = kSignonBundle.getString(showingPasswords ? "hidePasswords" : "showPasswords");
+  document.getElementById("passwordCol").hidden = !showingPasswords;
+}
+
+function AskUserShowPasswords() {
+  var prompter = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
+  var dummy = { value: false };
+
+  // Confirm the user wants to display passwords
+  return prompter.confirmEx(window,
+          null,
+          kSignonBundle.getString("noMasterPasswordPrompt"),
+          prompter.BUTTON_TITLE_YES * prompter.BUTTON_POS_0 + prompter.BUTTON_TITLE_NO * prompter.BUTTON_POS_1,
+          null, null, null, null, dummy) == 0;    // 0=="Yes" button
+}
+
+function ConfirmShowPasswords() {
+  if (encrypted) {
+    // If signons are encrypted, force prompted login into Software Security Device
+    var tokendb = Components.classes["@mozilla.org/security/pk11tokendb;1"]
+                    .createInstance(Components.interfaces.nsIPK11TokenDB);
+    var token = tokendb.getInternalKeyToken();
+
+    try {
+      // If signons are encrypted but there is no master password (it could have been changed to an empty string),
+      // still give the user a chance to opt-out of displaying passwords (like in the non-encrypted case).
+      // Regardless of whether the check succeeds or not, we still login to make sure we're properly authenticated.
+      // This is all right since login() will succeed without prompting the user for the (empty) master password.
+      if (token.checkPassword("") && !AskUserShowPasswords())
+          return false;
+
+      token.login(true);      // 'true' means always prompt for token password.  User will be prompted until
+                              // clicking 'Cancel' or entering the correct password.
+    } catch (e) {
+      // An exception will be thrown if the user cancels the login prompt dialog.
+      // User is also logged out of Software Security Device.
+      ;
+    }
+     
+    return token.isLoggedIn();
+  } else {
+    // signons not encrypted, confirm the user wants to display passwords
+    return AskUserShowPasswords();
+  }
+}
+
 function FinalizeSignonDeletions() {
   for (var s=0; s<deletedSignons.length; s++) {
     passwordmanager.removeUser(deletedSignons[s].host, deletedSignons[s].rawuser);

extensions/wallet/signonviewer/resources/content/SignonViewer.xul

@@ -67,6 +67,10 @@
               <splitter class="tree-splitter"/>
               <treecol id="userCol" label="&treehead.username.label;" flex="2"
                            onclick="SignonColumnSort('user');" persist="width"/>
+              <splitter class="tree-splitter"/>
+              <treecol id="passwordCol" label="&treehead.password.label;" flex="2"
+                           onclick="SignonColumnSort('password');" persist="width"
+                           hidden="true"/>
             </treecols>
             <treechildren/>
           </tree>
@@ -77,6 +81,9 @@
             <button id="removeAllSignons"
                           label="&removeall.label;"
                           oncommand="DeleteAllSignons();"/>
+            <spacer flex="1"/>
+            <button id="togglePasswords"
+                          oncommand="TogglePasswordVisible();"/>
           </hbox>
       </vbox>
       <!-- rejected signon sites -->

extensions/wallet/signonviewer/resources/locale/en-US/SignonViewer.dtd

@@ -12,5 +12,6 @@
 
 <!ENTITY      treehead.site.label             "Site">
 <!ENTITY      treehead.username.label         "Username">
+<!ENTITY      treehead.password.label         "Password">
 <!ENTITY      remove.label                    "Remove">
 <!ENTITY      removeall.label                 "Remove All">

extensions/wallet/signonviewer/resources/locale/en-US/SignonViewer.properties

@@ -1,2 +1,5 @@
 encrypted = %S (encrypted)
 close=Close
+hidePasswords=Hide Passwords
+showPasswords=Show Passwords
+noMasterPasswordPrompt=Are you sure you wish to show your passwords?