support password in input_request

IPython/html/static/notebook/js/outputarea.js

@@ -1,965 +1,972
 // Copyright (c) IPython Development Team.
 // Distributed under the terms of the Modified BSD License.
 
 //============================================================================
 // OutputArea
 //============================================================================
 
 /**
  * @module IPython
  * @namespace IPython
  * @submodule OutputArea
  */
 var IPython = (function (IPython) {
     "use strict";
 
     var utils = IPython.utils;
 
     /**
      * @class OutputArea
      *
      * @constructor
      */
 
     var OutputArea = function (selector, prompt_area) {
         this.selector = selector;
         this.wrapper = $(selector);
         this.outputs = [];
         this.collapsed = false;
         this.scrolled = false;
         this.trusted = true;
         this.clear_queued = null;
         if (prompt_area === undefined) {
             this.prompt_area = true;
         } else {
             this.prompt_area = prompt_area;
         }
         this.create_elements();
         this.style();
         this.bind_events();
     };
 
 
     /**
      * Class prototypes
      **/
 
     OutputArea.prototype.create_elements = function () {
         this.element = $("<div/>");
         this.collapse_button = $("<div/>");
         this.prompt_overlay = $("<div/>");
         this.wrapper.append(this.prompt_overlay);
         this.wrapper.append(this.element);
         this.wrapper.append(this.collapse_button);
     };
 
 
     OutputArea.prototype.style = function () {
         this.collapse_button.hide();
         this.prompt_overlay.hide();
         
         this.wrapper.addClass('output_wrapper');
         this.element.addClass('output');
         
         this.collapse_button.addClass("btn output_collapsed");
         this.collapse_button.attr('title', 'click to expand output');
         this.collapse_button.text('. . .');
         
         this.prompt_overlay.addClass('out_prompt_overlay prompt');
         this.prompt_overlay.attr('title', 'click to expand output; double click to hide output');
         
         this.collapse();
     };
 
     /**
      * Should the OutputArea scroll?
      * Returns whether the height (in lines) exceeds a threshold.
      *
      * @private
      * @method _should_scroll
      * @param [lines=100]{Integer}
      * @return {Bool}
      *
      */
     OutputArea.prototype._should_scroll = function (lines) {
         if (lines <=0 ){ return }
         if (!lines) {
             lines = 100;
         }
         // line-height from http://stackoverflow.com/questions/1185151
         var fontSize = this.element.css('font-size');
         var lineHeight = Math.floor(parseInt(fontSize.replace('px','')) * 1.5);
         
         return (this.element.height() > lines * lineHeight);
     };
 
 
     OutputArea.prototype.bind_events = function () {
         var that = this;
         this.prompt_overlay.dblclick(function () { that.toggle_output(); });
         this.prompt_overlay.click(function () { that.toggle_scroll(); });
 
         this.element.resize(function () {
             // FIXME: Firefox on Linux misbehaves, so automatic scrolling is disabled
             if ( IPython.utils.browser[0] === "Firefox" ) {
                 return;
             }
             // maybe scroll output,
             // if it's grown large enough and hasn't already been scrolled.
             if ( !that.scrolled && that._should_scroll(OutputArea.auto_scroll_threshold)) {
                 that.scroll_area();
             }
         });
         this.collapse_button.click(function () {
             that.expand();
         });
     };
 
 
     OutputArea.prototype.collapse = function () {
         if (!this.collapsed) {
             this.element.hide();
             this.prompt_overlay.hide();
             if (this.element.html()){
                 this.collapse_button.show();
             }
             this.collapsed = true;
         }
     };
 
 
     OutputArea.prototype.expand = function () {
         if (this.collapsed) {
             this.collapse_button.hide();
             this.element.show();
             this.prompt_overlay.show();
             this.collapsed = false;
         }
     };
 
 
     OutputArea.prototype.toggle_output = function () {
         if (this.collapsed) {
             this.expand();
         } else {
             this.collapse();
         }
     };
 
 
     OutputArea.prototype.scroll_area = function () {
         this.element.addClass('output_scroll');
         this.prompt_overlay.attr('title', 'click to unscroll output; double click to hide');
         this.scrolled = true;
     };
 
 
     OutputArea.prototype.unscroll_area = function () {
         this.element.removeClass('output_scroll');
         this.prompt_overlay.attr('title', 'click to scroll output; double click to hide');
         this.scrolled = false;
     };
 
     /**
      *
      * Scroll OutputArea if height supperior than a threshold (in lines).
      *
      * Threshold is a maximum number of lines. If unspecified, defaults to
      * OutputArea.minimum_scroll_threshold.
      *
      * Negative threshold will prevent the OutputArea from ever scrolling.
      *
      * @method scroll_if_long
      *
      * @param [lines=20]{Number} Default to 20 if not set,
      * behavior undefined for value of `0`.
      *
      **/
     OutputArea.prototype.scroll_if_long = function (lines) {
         var n = lines | OutputArea.minimum_scroll_threshold;
         if(n <= 0){
             return
         }
 
         if (this._should_scroll(n)) {
             // only allow scrolling long-enough output
             this.scroll_area();
         }
     };
 
 
     OutputArea.prototype.toggle_scroll = function () {
         if (this.scrolled) {
             this.unscroll_area();
         } else {
             // only allow scrolling long-enough output
             this.scroll_if_long();
         }
     };
 
 
     // typeset with MathJax if MathJax is available
     OutputArea.prototype.typeset = function () {
         if (window.MathJax){
             MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
         }
     };
 
 
     OutputArea.prototype.handle_output = function (msg) {
         var json = {};
         var msg_type = json.output_type = msg.header.msg_type;
         var content = msg.content;
         if (msg_type === "stream") {
             json.text = content.data;
             json.stream = content.name;
         } else if (msg_type === "display_data") {
             json = content.data;
             json.output_type = msg_type;
             json.metadata = content.metadata;
         } else if (msg_type === "execute_result") {
             json = content.data;
             // pyout message has been renamed to execute_result,
             // but the nbformat has not been updated,
             // so transform back to pyout for json.
             json.output_type = "pyout";
             json.metadata = content.metadata;
             json.prompt_number = content.execution_count;
         } else if (msg_type === "error") {
             // pyerr message has been renamed to error,
             // but the nbformat has not been updated,
             // so transform back to pyerr for json.
             json.output_type = "pyerr";
             json = this.convert_mime_types(json, content.data);
             json.metadata = this.convert_mime_types({}, content.metadata);
         }
         this.append_output(json);
     };
     
     
     OutputArea.prototype.rename_keys = function (data, key_map) {
         var remapped = {};
         for (var key in data) {
             var new_key = key_map[key] || key;
             remapped[new_key] = data[key];
         }
         return remapped;
     };
 
 
     OutputArea.output_types = [
         'application/javascript',
         'text/html',
         'text/markdown',
         'text/latex',
         'image/svg+xml',
         'image/png',
         'image/jpeg',
         'application/pdf',
         'text/plain'
     ];
 
     OutputArea.prototype.validate_output = function (json) {
         // scrub invalid outputs
         // TODO: right now everything is a string, but JSON really shouldn't be.
         // nbformat 4 will fix that.
         $.map(OutputArea.output_types, function(key){
             if (json[key] !== undefined && typeof json[key] !== 'string') {
                 console.log("Invalid type for " + key, json[key]);
                 delete json[key];
             }
         });
         return json;
     };
     
     OutputArea.prototype.append_output = function (json) {
         this.expand();
         
         // validate output data types
         json = this.validate_output(json);
 
         // Clear the output if clear is queued.
         var needs_height_reset = false;
         if (this.clear_queued) {
             this.clear_output(false);
             needs_height_reset = true;
         }
 
         if (json.output_type === 'pyout') {
             this.append_execute_result(json);
         } else if (json.output_type === 'pyerr') {
             this.append_error(json);
         } else if (json.output_type === 'stream') {
             this.append_stream(json);
         }
 
         // We must release the animation fixed height in a callback since Gecko
         // (FireFox) doesn't render the image immediately as the data is 
         // available.
         var that = this;
         var handle_appended = function ($el) {
             // Only reset the height to automatic if the height is currently
             // fixed (done by wait=True flag on clear_output).
             if (needs_height_reset) {
                 that.element.height('');
             }
             that.element.trigger('resize');
         };
         if (json.output_type === 'display_data') {
             this.append_display_data(json, handle_appended);
         } else {
             handle_appended();
         }
         
         this.outputs.push(json);
     };
 
 
     OutputArea.prototype.create_output_area = function () {
         var oa = $("<div/>").addClass("output_area");
         if (this.prompt_area) {
             oa.append($('<div/>').addClass('prompt'));
         }
         return oa;
     };
 
 
     function _get_metadata_key(metadata, key, mime) {
         var mime_md = metadata[mime];
         // mime-specific higher priority
         if (mime_md && mime_md[key] !== undefined) {
             return mime_md[key];
         }
         // fallback on global
         return metadata[key];
     }
 
     OutputArea.prototype.create_output_subarea = function(md, classes, mime) {
         var subarea = $('<div/>').addClass('output_subarea').addClass(classes);
         if (_get_metadata_key(md, 'isolated', mime)) {
             // Create an iframe to isolate the subarea from the rest of the
             // document
             var iframe = $('<iframe/>').addClass('box-flex1');
             iframe.css({'height':1, 'width':'100%', 'display':'block'});
             iframe.attr('frameborder', 0);
             iframe.attr('scrolling', 'auto');
 
             // Once the iframe is loaded, the subarea is dynamically inserted
             iframe.on('load', function() {
                 // Workaround needed by Firefox, to properly render svg inside
                 // iframes, see http://stackoverflow.com/questions/10177190/
                 // svg-dynamically-added-to-iframe-does-not-render-correctly
                 this.contentDocument.open();
 
                 // Insert the subarea into the iframe
                 // We must directly write the html. When using Jquery's append
                 // method, javascript is evaluated in the parent document and
                 // not in the iframe document.  At this point, subarea doesn't
                 // contain any user content.
                 this.contentDocument.write(subarea.html());
 
                 this.contentDocument.close();
 
                 var body = this.contentDocument.body;
                 // Adjust the iframe height automatically
                 iframe.height(body.scrollHeight + 'px');
             });
 
             // Elements should be appended to the inner subarea and not to the
             // iframe
             iframe.append = function(that) {
                 subarea.append(that);
             };
 
             return iframe;
         } else {
             return subarea;
         }
     }
 
 
     OutputArea.prototype._append_javascript_error = function (err, element) {
         // display a message when a javascript error occurs in display output
         var msg = "Javascript error adding output!"
         if ( element === undefined ) return;
         element
             .append($('<div/>').text(msg).addClass('js-error'))
             .append($('<div/>').text(err.toString()).addClass('js-error'))
             .append($('<div/>').text('See your browser Javascript console for more details.').addClass('js-error'));
     };
     
     OutputArea.prototype._safe_append = function (toinsert) {
         // safely append an item to the document
         // this is an object created by user code,
         // and may have errors, which should not be raised
         // under any circumstances.
         try {
             this.element.append(toinsert);
         } catch(err) {
             console.log(err);
             // Create an actual output_area and output_subarea, which creates
             // the prompt area and the proper indentation.
             var toinsert = this.create_output_area();
             var subarea = $('<div/>').addClass('output_subarea');
             toinsert.append(subarea);
             this._append_javascript_error(err, subarea);
             this.element.append(toinsert);
         }
     };
 
 
     OutputArea.prototype.append_execute_result = function (json) {
         var n = json.prompt_number || ' ';
         var toinsert = this.create_output_area();
         if (this.prompt_area) {
             toinsert.find('div.prompt').addClass('output_prompt').text('Out[' + n + ']:');
         }
         var inserted = this.append_mime_type(json, toinsert);
         if (inserted) {
             inserted.addClass('output_pyout');
         }
         this._safe_append(toinsert);
         // If we just output latex, typeset it.
         if ((json['text/latex'] !== undefined) ||
             (json['text/html'] !== undefined) ||
             (json['text/markdown'] !== undefined)) {
             this.typeset();
         }
     };
 
 
     OutputArea.prototype.append_error = function (json) {
         var tb = json.traceback;
         if (tb !== undefined && tb.length > 0) {
             var s = '';
             var len = tb.length;
             for (var i=0; i<len; i++) {
                 s = s + tb[i] + '\n';
             }
             s = s + '\n';
             var toinsert = this.create_output_area();
             var append_text = OutputArea.append_map['text/plain'];
             if (append_text) {
                 append_text.apply(this, [s, {}, toinsert]).addClass('output_pyerr');
             }
             this._safe_append(toinsert);
         }
     };
 
 
     OutputArea.prototype.append_stream = function (json) {
         // temporary fix: if stream undefined (json file written prior to this patch),
         // default to most likely stdout:
         if (json.stream === undefined){
             json.stream = 'stdout';
         }
         var text = json.text;
         var subclass = "output_"+json.stream;
         if (this.outputs.length > 0){
             // have at least one output to consider
             var last = this.outputs[this.outputs.length-1];
             if (last.output_type == 'stream' && json.stream == last.stream){
                 // latest output was in the same stream,
                 // so append directly into its pre tag
                 // escape ANSI & HTML specials:
                 var pre = this.element.find('div.'+subclass).last().find('pre');
                 var html = utils.fixCarriageReturn(
                     pre.html() + utils.fixConsole(text));
                 // The only user content injected with this HTML call is
                 // escaped by the fixConsole() method.
                 pre.html(html);
                 return;
             }
         }
 
         if (!text.replace("\r", "")) {
             // text is nothing (empty string, \r, etc.)
             // so don't append any elements, which might add undesirable space
             return;
         }
 
         // If we got here, attach a new div
         var toinsert = this.create_output_area();
         var append_text = OutputArea.append_map['text/plain'];
         if (append_text) {
             append_text.apply(this, [text, {}, toinsert]).addClass("output_stream " + subclass);
         }
         this._safe_append(toinsert);
     };
 
 
     OutputArea.prototype.append_display_data = function (json, handle_inserted) {
         var toinsert = this.create_output_area();
         if (this.append_mime_type(json, toinsert, handle_inserted)) {
             this._safe_append(toinsert);
             // If we just output latex, typeset it.
             if ((json['text/latex'] !== undefined) ||
                 (json['text/html'] !== undefined) ||
                 (json['text/markdown'] !== undefined)) {
                 this.typeset();
             }
         }
     };
 
 
     OutputArea.safe_outputs = {
         'text/plain' : true,
         'text/latex' : true,
         'image/png' : true,
         'image/jpeg' : true
     };
     
     OutputArea.prototype.append_mime_type = function (json, element, handle_inserted) {
         for (var i=0; i < OutputArea.display_order.length; i++) {
             var type = OutputArea.display_order[i];
             var append = OutputArea.append_map[type];
             if ((json[type] !== undefined) && append) {
                 var value = json[type];
                 if (!this.trusted && !OutputArea.safe_outputs[type]) {
                     // not trusted, sanitize HTML
                     if (type==='text/html' || type==='text/svg') {
                         value = IPython.security.sanitize_html(value);
                     } else {
                         // don't display if we don't know how to sanitize it
                         console.log("Ignoring untrusted " + type + " output.");
                         continue;
                     }
                 }
                 var md = json.metadata || {};
                 var toinsert = append.apply(this, [value, md, element, handle_inserted]);
                 // Since only the png and jpeg mime types call the inserted
                 // callback, if the mime type is something other we must call the 
                 // inserted callback only when the element is actually inserted
                 // into the DOM.  Use a timeout of 0 to do this.
                 if (['image/png', 'image/jpeg'].indexOf(type) < 0 && handle_inserted !== undefined) {
                     setTimeout(handle_inserted, 0);
                 }
                 $([IPython.events]).trigger('output_appended.OutputArea', [type, value, md, toinsert]);
                 return toinsert;
             }
         }
         return null;
     };
 
 
     var append_html = function (html, md, element) {
         var type = 'text/html';
         var toinsert = this.create_output_subarea(md, "output_html rendered_html", type);
         IPython.keyboard_manager.register_events(toinsert);
         toinsert.append(html);
         element.append(toinsert);
         return toinsert;
     };
 
 
     var append_markdown = function(markdown, md, element) {
         var type = 'text/markdown';
         var toinsert = this.create_output_subarea(md, "output_markdown", type);
         var text_and_math = IPython.mathjaxutils.remove_math(markdown);
         var text = text_and_math[0];
         var math = text_and_math[1];
         var html = marked.parser(marked.lexer(text));
         html = IPython.mathjaxutils.replace_math(html, math);
         toinsert.append(html);
         element.append(toinsert);
         return toinsert;
     };
 
 
     var append_javascript = function (js, md, element) {
         // We just eval the JS code, element appears in the local scope.
         var type = 'application/javascript';
         var toinsert = this.create_output_subarea(md, "output_javascript", type);
         IPython.keyboard_manager.register_events(toinsert);
         element.append(toinsert);
         // FIXME TODO : remove `container element for 3.0` 
         //backward compat, js should be eval'ed in a context where `container` is defined.
         var container = element;
         container.show = function(){console.log('Warning "container.show()" is deprecated.')};
         // end backward compat
 
         // Fix for ipython/issues/5293, make sure `element` is the area which
         // output can be inserted into at the time of JS execution.
         element = toinsert;
         try {
             eval(js);
         } catch(err) {
             console.log(err);
             this._append_javascript_error(err, toinsert);
         }
         return toinsert;
     };
 
 
     var append_text = function (data, md, element) {
         var type = 'text/plain';
         var toinsert = this.create_output_subarea(md, "output_text", type);
         // escape ANSI & HTML specials in plaintext:
         data = utils.fixConsole(data);
         data = utils.fixCarriageReturn(data);
         data = utils.autoLinkUrls(data);
         // The only user content injected with this HTML call is
         // escaped by the fixConsole() method.
         toinsert.append($("<pre/>").html(data));
         element.append(toinsert);
         return toinsert;
     };
 
 
     var append_svg = function (svg_html, md, element) {
         var type = 'image/svg+xml';
         var toinsert = this.create_output_subarea(md, "output_svg", type);
 
         // Get the svg element from within the HTML.
         var svg = $('<div />').html(svg_html).find('svg');
         var svg_area = $('<div />');
         var width = svg.attr('width');
         var height = svg.attr('height');
         svg
             .width('100%')
             .height('100%');
         svg_area
             .width(width)
             .height(height);
 
         // The jQuery resize handlers don't seem to work on the svg element.
         // When the svg renders completely, measure it's size and set the parent
         // div to that size.  Then set the svg to 100% the size of the parent
         // div and make the parent div resizable.  
         this._dblclick_to_reset_size(svg_area, true, false);
 
         svg_area.append(svg);
         toinsert.append(svg_area);
         element.append(toinsert);
 
         return toinsert;
     };
 
     OutputArea.prototype._dblclick_to_reset_size = function (img, immediately, resize_parent) {
         // Add a resize handler to an element
         //
         // img: jQuery element
         // immediately: bool=False
         //      Wait for the element to load before creating the handle.
         // resize_parent: bool=True
         //      Should the parent of the element be resized when the element is
         //      reset (by double click).
         var callback = function (){
             var h0 = img.height();
             var w0 = img.width();
             if (!(h0 && w0)) {
                 // zero size, don't make it resizable
                 return;
             }
             img.resizable({
                 aspectRatio: true,
                 autoHide: true
             });
             img.dblclick(function () {
                 // resize wrapper & image together for some reason:
                 img.height(h0);
                 img.width(w0);
                 if (resize_parent === undefined || resize_parent) {
                     img.parent().height(h0);
                     img.parent().width(w0);
                 }
             });
         };
 
         if (immediately) {
             callback();
         } else {
             img.on("load", callback);
         }
     };
     
     var set_width_height = function (img, md, mime) {
         // set width and height of an img element from metadata
         var height = _get_metadata_key(md, 'height', mime);
         if (height !== undefined) img.attr('height', height);
         var width = _get_metadata_key(md, 'width', mime);
         if (width !== undefined) img.attr('width', width);
     };
     
     var append_png = function (png, md, element, handle_inserted) {
         var type = 'image/png';
         var toinsert = this.create_output_subarea(md, "output_png", type);
         var img = $("<img/>");
         if (handle_inserted !== undefined) {
             img.on('load', function(){
                 handle_inserted(img);
             });
         }
         img[0].src = 'data:image/png;base64,'+ png;
         set_width_height(img, md, 'image/png');
         this._dblclick_to_reset_size(img);
         toinsert.append(img);
         element.append(toinsert);
         return toinsert;
     };
 
 
     var append_jpeg = function (jpeg, md, element, handle_inserted) {
         var type = 'image/jpeg';
         var toinsert = this.create_output_subarea(md, "output_jpeg", type);
         var img = $("<img/>");
         if (handle_inserted !== undefined) {
             img.on('load', function(){
                 handle_inserted(img);
             });
         }
         img[0].src = 'data:image/jpeg;base64,'+ jpeg;
         set_width_height(img, md, 'image/jpeg');
         this._dblclick_to_reset_size(img);
         toinsert.append(img);
         element.append(toinsert);
         return toinsert;
     };
 
 
     var append_pdf = function (pdf, md, element) {
         var type = 'application/pdf';
         var toinsert = this.create_output_subarea(md, "output_pdf", type);
         var a = $('<a/>').attr('href', 'data:application/pdf;base64,'+pdf);
         a.attr('target', '_blank');
         a.text('View PDF')
         toinsert.append(a);
         element.append(toinsert);
         return toinsert;
      }
 
     var append_latex = function (latex, md, element) {
         // This method cannot do the typesetting because the latex first has to
         // be on the page.
         var type = 'text/latex';
         var toinsert = this.create_output_subarea(md, "output_latex", type);
         toinsert.append(latex);
         element.append(toinsert);
         return toinsert;
     };
 
 
     OutputArea.prototype.append_raw_input = function (msg) {
         var that = this;
         this.expand();
         var content = msg.content;
         var area = this.create_output_area();
         
         // disable any other raw_inputs, if they are left around
         $("div.output_subarea.raw_input_container").remove();
         
+        var input_type = content.password ? 'password' : 'text';
+        
         area.append(
             $("<div/>")
             .addClass("box-flex1 output_subarea raw_input_container")
             .append(
                 $("<span/>")
                 .addClass("raw_input_prompt")
                 .text(content.prompt)
             )
             .append(
                 $("<input/>")
                 .addClass("raw_input")
-                .attr('type', 'text')
+                .attr('type', input_type)
                 .attr("size", 47)
                 .keydown(function (event, ui) {
                     // make sure we submit on enter,
                     // and don't re-execute the *cell* on shift-enter
                     if (event.which === IPython.keyboard.keycodes.enter) {
                         that._submit_raw_input();
                         return false;
                     }
                 })
             )
         );
         
         this.element.append(area);
         var raw_input = area.find('input.raw_input');
         // Register events that enable/disable the keyboard manager while raw
         // input is focused.
         IPython.keyboard_manager.register_events(raw_input);
         // Note, the following line used to read raw_input.focus().focus().
         // This seemed to be needed otherwise only the cell would be focused.
         // But with the modal UI, this seems to work fine with one call to focus().
         raw_input.focus();
     }
 
     OutputArea.prototype._submit_raw_input = function (evt) {
         var container = this.element.find("div.raw_input_container");
         var theprompt = container.find("span.raw_input_prompt");
         var theinput = container.find("input.raw_input");
         var value = theinput.val();
+        var echo  = value;
+        // don't echo if it's a password
+        if (theinput.attr('type') == 'password') {
+            echo = '········';
+        }
         var content = {
             output_type : 'stream',
             name : 'stdout',
-            text : theprompt.text() + value + '\n'
+            text : theprompt.text() + echo + '\n'
         }
         // remove form container
         container.parent().remove();
         // replace with plaintext version in stdout
         this.append_output(content, false);
         $([IPython.events]).trigger('send_input_reply.Kernel', value);
     }
 
 
     OutputArea.prototype.handle_clear_output = function (msg) {
         // msg spec v4 had stdout, stderr, display keys
         // v4.1 replaced these with just wait
         // The default behavior is the same (stdout=stderr=display=True, wait=False),
         // so v4 messages will still be properly handled,
         // except for the rarely used clearing less than all output.
         this.clear_output(msg.content.wait || false);
     };
 
 
     OutputArea.prototype.clear_output = function(wait) {
         if (wait) {
 
             // If a clear is queued, clear before adding another to the queue.
             if (this.clear_queued) {
                 this.clear_output(false);
             };
 
             this.clear_queued = true;
         } else {
 
             // Fix the output div's height if the clear_output is waiting for
             // new output (it is being used in an animation).
             if (this.clear_queued) {
                 var height = this.element.height();
                 this.element.height(height);
                 this.clear_queued = false;
             }
             
             // Clear all
             // Remove load event handlers from img tags because we don't want
             // them to fire if the image is never added to the page.
             this.element.find('img').off('load');
             this.element.html("");
             this.outputs = [];
             this.trusted = true;
             this.unscroll_area();
             return;
         };
     };
 
 
     // JSON serialization
 
     OutputArea.prototype.fromJSON = function (outputs) {
         var len = outputs.length;
         var data;
 
         for (var i=0; i<len; i++) {
             data = outputs[i];
             var msg_type = data.output_type;
             if (msg_type === "display_data" || msg_type === "pyout") {
                 // convert short keys to mime keys
                 // TODO: remove mapping of short keys when we update to nbformat 4
                  data = this.rename_keys(data, OutputArea.mime_map_r);
                  data.metadata = this.rename_keys(data.metadata, OutputArea.mime_map_r);
             }
             
             this.append_output(data);
         }
     };
 
 
     OutputArea.prototype.toJSON = function () {
         var outputs = [];
         var len = this.outputs.length;
         var data;
         for (var i=0; i<len; i++) {
             data = this.outputs[i];
             var msg_type = data.output_type;
             if (msg_type === "display_data" || msg_type === "pyout") {
                   // convert mime keys to short keys
                  data = this.rename_keys(data, OutputArea.mime_map);
                  data.metadata = this.rename_keys(data.metadata, OutputArea.mime_map);
             }
             outputs[i] = data;
         }
         return outputs;
     };
 
     /**
      * Class properties
      **/
 
     /**
      * Threshold to trigger autoscroll when the OutputArea is resized,
      * typically when new outputs are added.
      *
      * Behavior is undefined if autoscroll is lower than minimum_scroll_threshold,
      * unless it is < 0, in which case autoscroll will never be triggered
      *
      * @property auto_scroll_threshold
      * @type Number
      * @default 100
      *
      **/
     OutputArea.auto_scroll_threshold = 100;
 
     /**
      * Lower limit (in lines) for OutputArea to be made scrollable. OutputAreas
      * shorter than this are never scrolled.
      *
      * @property minimum_scroll_threshold
      * @type Number
      * @default 20
      *
      **/
     OutputArea.minimum_scroll_threshold = 20;
 
 
 
     OutputArea.mime_map = {
         "text/plain" : "text",
         "text/html" : "html",
         "image/svg+xml" : "svg",
         "image/png" : "png",
         "image/jpeg" : "jpeg",
         "text/latex" : "latex",
         "application/json" : "json",
         "application/javascript" : "javascript",
     };
 
     OutputArea.mime_map_r = {
         "text" : "text/plain",
         "html" : "text/html",
         "svg" : "image/svg+xml",
         "png" : "image/png",
         "jpeg" : "image/jpeg",
         "latex" : "text/latex",
         "json" : "application/json",
         "javascript" : "application/javascript",
     };
 
     OutputArea.display_order = [
         'application/javascript',
         'text/html',
         'text/markdown',
         'text/latex',
         'image/svg+xml',
         'image/png',
         'image/jpeg',
         'application/pdf',
         'text/plain'
     ];
 
     OutputArea.append_map = {
         "text/plain" : append_text,
         "text/html" : append_html,
         "text/markdown": append_markdown,
         "image/svg+xml" : append_svg,
         "image/png" : append_png,
         "image/jpeg" : append_jpeg,
         "text/latex" : append_latex,
         "application/javascript" : append_javascript,
         "application/pdf" : append_pdf
     };
 
     IPython.OutputArea = OutputArea;
 
     return IPython;
 
 }(IPython));

IPython/kernel/zmq/ipkernel.py

@@ -1,793 +1,809
 #!/usr/bin/env python
 """An interactive kernel that talks to frontends over 0MQ."""
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 from __future__ import print_function
 
+import getpass
 import sys
 import time
 import traceback
 import logging
 import uuid
 
 from datetime import datetime
 from signal import (
         signal, default_int_handler, SIGINT
 )
 
 import zmq
 from zmq.eventloop import ioloop
 from zmq.eventloop.zmqstream import ZMQStream
 
 from IPython.config.configurable import Configurable
 from IPython.core.error import StdinNotImplementedError
 from IPython.core import release
 from IPython.utils import py3compat
 from IPython.utils.py3compat import builtin_mod, unicode_type, string_types
 from IPython.utils.jsonutil import json_clean
 from IPython.utils.traitlets import (
     Any, Instance, Float, Dict, List, Set, Integer, Unicode,
     Type, Bool,
 )
 
 from .serialize import serialize_object, unpack_apply_message
 from .session import Session
 from .zmqshell import ZMQInteractiveShell
 
 
 #-----------------------------------------------------------------------------
 # Main kernel class
 #-----------------------------------------------------------------------------
 
 protocol_version = release.kernel_protocol_version
 ipython_version = release.version
 language_version = sys.version.split()[0]
 
 
 class Kernel(Configurable):
 
     #---------------------------------------------------------------------------
     # Kernel interface
     #---------------------------------------------------------------------------
 
     # attribute to override with a GUI
     eventloop = Any(None)
     def _eventloop_changed(self, name, old, new):
         """schedule call to eventloop from IOLoop"""
         loop = ioloop.IOLoop.instance()
         loop.add_callback(self.enter_eventloop)
 
     shell = Instance('IPython.core.interactiveshell.InteractiveShellABC')
     shell_class = Type(ZMQInteractiveShell)
 
     session = Instance(Session)
     profile_dir = Instance('IPython.core.profiledir.ProfileDir')
     shell_streams = List()
     control_stream = Instance(ZMQStream)
     iopub_socket = Instance(zmq.Socket)
     stdin_socket = Instance(zmq.Socket)
     log = Instance(logging.Logger)
     
     user_module = Any()
     def _user_module_changed(self, name, old, new):
         if self.shell is not None:
             self.shell.user_module = new
     
     user_ns = Instance(dict, args=None, allow_none=True)
     def _user_ns_changed(self, name, old, new):
         if self.shell is not None:
             self.shell.user_ns = new
             self.shell.init_user_ns()
 
     # identities:
     int_id = Integer(-1)
     ident = Unicode()
 
     def _ident_default(self):
         return unicode_type(uuid.uuid4())
 
     # Private interface
     
     _darwin_app_nap = Bool(True, config=True,
         help="""Whether to use appnope for compatiblity with OS X App Nap.
         
         Only affects OS X >= 10.9.
         """
     )
 
     # Time to sleep after flushing the stdout/err buffers in each execute
     # cycle.  While this introduces a hard limit on the minimal latency of the
     # execute cycle, it helps prevent output synchronization problems for
     # clients.
     # Units are in seconds.  The minimum zmq latency on local host is probably
     # ~150 microseconds, set this to 500us for now.  We may need to increase it
     # a little if it's not enough after more interactive testing.
     _execute_sleep = Float(0.0005, config=True)
 
     # Frequency of the kernel's event loop.
     # Units are in seconds, kernel subclasses for GUI toolkits may need to
     # adapt to milliseconds.
     _poll_interval = Float(0.05, config=True)
 
     # If the shutdown was requested over the network, we leave here the
     # necessary reply message so it can be sent by our registered atexit
     # handler.  This ensures that the reply is only sent to clients truly at
     # the end of our shutdown process (which happens after the underlying
     # IPython shell's own shutdown).
     _shutdown_message = None
 
     # This is a dict of port number that the kernel is listening on. It is set
     # by record_ports and used by connect_request.
     _recorded_ports = Dict()
 
     # A reference to the Python builtin 'raw_input' function.
     # (i.e., __builtin__.raw_input for Python 2.7, builtins.input for Python 3)
     _sys_raw_input = Any()
     _sys_eval_input = Any()
 
     # set of aborted msg_ids
     aborted = Set()
 
 
     def __init__(self, **kwargs):
         super(Kernel, self).__init__(**kwargs)
 
         # Initialize the InteractiveShell subclass
         self.shell = self.shell_class.instance(parent=self,
             profile_dir = self.profile_dir,
             user_module = self.user_module,
             user_ns     = self.user_ns,
             kernel      = self,
         )
         self.shell.displayhook.session = self.session
         self.shell.displayhook.pub_socket = self.iopub_socket
         self.shell.displayhook.topic = self._topic('execute_result')
         self.shell.display_pub.session = self.session
         self.shell.display_pub.pub_socket = self.iopub_socket
         self.shell.data_pub.session = self.session
         self.shell.data_pub.pub_socket = self.iopub_socket
 
         # TMP - hack while developing
         self.shell._reply_content = None
 
         # Build dict of handlers for message types
         msg_types = [ 'execute_request', 'complete_request',
                       'object_info_request', 'history_request',
                       'kernel_info_request',
                       'connect_request', 'shutdown_request',
                       'apply_request',
                     ]
         self.shell_handlers = {}
         for msg_type in msg_types:
             self.shell_handlers[msg_type] = getattr(self, msg_type)
         
         comm_msg_types = [ 'comm_open', 'comm_msg', 'comm_close' ]
         comm_manager = self.shell.comm_manager
         for msg_type in comm_msg_types:
             self.shell_handlers[msg_type] = getattr(comm_manager, msg_type)
         
         control_msg_types = msg_types + [ 'clear_request', 'abort_request' ]
         self.control_handlers = {}
         for msg_type in control_msg_types:
             self.control_handlers[msg_type] = getattr(self, msg_type)
 
 
     def dispatch_control(self, msg):
         """dispatch control requests"""
         idents,msg = self.session.feed_identities(msg, copy=False)
         try:
             msg = self.session.unserialize(msg, content=True, copy=False)
         except:
             self.log.error("Invalid Control Message", exc_info=True)
             return
 
         self.log.debug("Control received: %s", msg)
 
         header = msg['header']
         msg_id = header['msg_id']
         msg_type = header['msg_type']
 
         handler = self.control_handlers.get(msg_type, None)
         if handler is None:
             self.log.error("UNKNOWN CONTROL MESSAGE TYPE: %r", msg_type)
         else:
             try:
                 handler(self.control_stream, idents, msg)
             except Exception:
                 self.log.error("Exception in control handler:", exc_info=True)
     
     def dispatch_shell(self, stream, msg):
         """dispatch shell requests"""
         # flush control requests first
         if self.control_stream:
             self.control_stream.flush()
         
         idents,msg = self.session.feed_identities(msg, copy=False)
         try:
             msg = self.session.unserialize(msg, content=True, copy=False)
         except:
             self.log.error("Invalid Message", exc_info=True)
             return
 
         header = msg['header']
         msg_id = header['msg_id']
         msg_type = msg['header']['msg_type']
         
         # Print some info about this message and leave a '--->' marker, so it's
         # easier to trace visually the message chain when debugging.  Each
         # handler prints its message at the end.
         self.log.debug('\n*** MESSAGE TYPE:%s***', msg_type)
         self.log.debug('   Content: %s\n   --->\n   ', msg['content'])
 
         if msg_id in self.aborted:
             self.aborted.remove(msg_id)
             # is it safe to assume a msg_id will not be resubmitted?
             reply_type = msg_type.split('_')[0] + '_reply'
             status = {'status' : 'aborted'}
             md = {'engine' : self.ident}
             md.update(status)
             reply_msg = self.session.send(stream, reply_type, metadata=md,
                         content=status, parent=msg, ident=idents)
             return
         
         handler = self.shell_handlers.get(msg_type, None)
         if handler is None:
             self.log.error("UNKNOWN MESSAGE TYPE: %r", msg_type)
         else:
             # ensure default_int_handler during handler call
             sig = signal(SIGINT, default_int_handler)
             try:
                 handler(stream, idents, msg)
             except Exception:
                 self.log.error("Exception in message handler:", exc_info=True)
             finally:
                 signal(SIGINT, sig)
     
     def enter_eventloop(self):
         """enter eventloop"""
         self.log.info("entering eventloop %s", self.eventloop)
         for stream in self.shell_streams:
             # flush any pending replies,
             # which may be skipped by entering the eventloop
             stream.flush(zmq.POLLOUT)
         # restore default_int_handler
         signal(SIGINT, default_int_handler)
         while self.eventloop is not None:
             try:
                 self.eventloop(self)
             except KeyboardInterrupt:
                 # Ctrl-C shouldn't crash the kernel
                 self.log.error("KeyboardInterrupt caught in kernel")
                 continue
             else:
                 # eventloop exited cleanly, this means we should stop (right?)
                 self.eventloop = None
                 break
         self.log.info("exiting eventloop")
 
     def start(self):
         """register dispatchers for streams"""
         self.shell.exit_now = False
         if self.control_stream:
             self.control_stream.on_recv(self.dispatch_control, copy=False)
 
         def make_dispatcher(stream):
             def dispatcher(msg):
                 return self.dispatch_shell(stream, msg)
             return dispatcher
 
         for s in self.shell_streams:
             s.on_recv(make_dispatcher(s), copy=False)
 
         # publish idle status
         self._publish_status('starting')
     
     def do_one_iteration(self):
         """step eventloop just once"""
         if self.control_stream:
             self.control_stream.flush()
         for stream in self.shell_streams:
             # handle at most one request per iteration
             stream.flush(zmq.POLLIN, 1)
             stream.flush(zmq.POLLOUT)
 
 
     def record_ports(self, ports):
         """Record the ports that this kernel is using.
 
         The creator of the Kernel instance must call this methods if they
         want the :meth:`connect_request` method to return the port numbers.
         """
         self._recorded_ports = ports
 
     #---------------------------------------------------------------------------
     # Kernel request handlers
     #---------------------------------------------------------------------------
     
     def _make_metadata(self, other=None):
         """init metadata dict, for execute/apply_reply"""
         new_md = {
             'dependencies_met' : True,
             'engine' : self.ident,
             'started': datetime.now(),
         }
         if other:
             new_md.update(other)
         return new_md
     
     def _publish_execute_input(self, code, parent, execution_count):
         """Publish the code request on the iopub stream."""
 
         self.session.send(self.iopub_socket, u'execute_input',
                             {u'code':code, u'execution_count': execution_count},
                             parent=parent, ident=self._topic('execute_input')
         )
     
     def _publish_status(self, status, parent=None):
         """send status (busy/idle) on IOPub"""
         self.session.send(self.iopub_socket,
                           u'status',
                           {u'execution_state': status},
                           parent=parent,
                           ident=self._topic('status'),
                           )
+    
+    def _forward_raw_input(self, ident, parent, allow_stdin):
+        """Replace raw_input. Note that is not sufficient to replace
+        raw_input in the user namespace.
+        """
+        
+        if allow_stdin:
+            raw_input = lambda prompt='': self._raw_input(prompt, ident, parent)
+            input = lambda prompt='': eval(raw_input(prompt))
+            _getpass = lambda prompt='', stream=None: self._raw_input(
+                prompt, ident, parent, password=True
+            )
+        else:
+            _getpass = raw_input = input = lambda prompt='' : self._no_raw_input()
+            
+
+        if py3compat.PY3:
+            self._sys_raw_input = builtin_mod.input
+            builtin_mod.input = raw_input
+        else:
+            self._sys_raw_input = builtin_mod.raw_input
+            self._sys_eval_input = builtin_mod.input
+            builtin_mod.raw_input = raw_input
+            builtin_mod.input = input
+        self._save_getpass = getpass.getpass
+        getpass.getpass = _getpass
+
+    def _restore_raw_input(self):
+        # Restore raw_input
+        if py3compat.PY3:
+            builtin_mod.input = self._sys_raw_input
+        else:
+            builtin_mod.raw_input = self._sys_raw_input
+            builtin_mod.input = self._sys_eval_input
         
+        getpass.getpass = self._save_getpass
 
     def execute_request(self, stream, ident, parent):
         """handle an execute_request"""
         
         self._publish_status(u'busy', parent)
         
         try:
             content = parent[u'content']
             code = py3compat.cast_unicode_py2(content[u'code'])
             silent = content[u'silent']
             store_history = content.get(u'store_history', not silent)
         except:
             self.log.error("Got bad msg: ")
             self.log.error("%s", parent)
             return
         
         md = self._make_metadata(parent['metadata'])
 
         shell = self.shell # we'll need this a lot here
 
-        # Replace raw_input. Note that is not sufficient to replace
-        # raw_input in the user namespace.
-        if content.get('allow_stdin', False):
-            raw_input = lambda prompt='': self._raw_input(prompt, ident, parent)
-            input = lambda prompt='': eval(raw_input(prompt))
-        else:
-            raw_input = input = lambda prompt='' : self._no_raw_input()
-
-        if py3compat.PY3:
-            self._sys_raw_input = builtin_mod.input
-            builtin_mod.input = raw_input
-        else:
-            self._sys_raw_input = builtin_mod.raw_input
-            self._sys_eval_input = builtin_mod.input
-            builtin_mod.raw_input = raw_input
-            builtin_mod.input = input
+        self._forward_raw_input(ident, parent, content.get('allow_stdin', False))
 
         # Set the parent message of the display hook and out streams.
         shell.set_parent(parent)
 
         # Re-broadcast our input for the benefit of listening clients, and
         # start computing output
         if not silent:
             self._publish_execute_input(code, parent, shell.execution_count)
 
         reply_content = {}
         # FIXME: the shell calls the exception handler itself.
         shell._reply_content = None
         try:
             shell.run_cell(code, store_history=store_history, silent=silent)
         except:
             status = u'error'
             # FIXME: this code right now isn't being used yet by default,
             # because the run_cell() call above directly fires off exception
             # reporting.  This code, therefore, is only active in the scenario
             # where runlines itself has an unhandled exception.  We need to
             # uniformize this, for all exception construction to come from a
             # single location in the codbase.
             etype, evalue, tb = sys.exc_info()
             tb_list = traceback.format_exception(etype, evalue, tb)
             reply_content.update(shell._showtraceback(etype, evalue, tb_list))
         else:
             status = u'ok'
         finally:
-            # Restore raw_input.
-             if py3compat.PY3:
-                 builtin_mod.input = self._sys_raw_input
-             else:
-                 builtin_mod.raw_input = self._sys_raw_input
-                 builtin_mod.input = self._sys_eval_input
+            self._restore_raw_input()
 
         reply_content[u'status'] = status
 
         # Return the execution counter so clients can display prompts
         reply_content['execution_count'] = shell.execution_count - 1
 
         # FIXME - fish exception info out of shell, possibly left there by
         # runlines.  We'll need to clean up this logic later.
         if shell._reply_content is not None:
             reply_content.update(shell._reply_content)
             e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method='execute')
             reply_content['engine_info'] = e_info
             # reset after use
             shell._reply_content = None
         
         if 'traceback' in reply_content:
             self.log.info("Exception in execute request:\n%s", '\n'.join(reply_content['traceback']))
         
 
         # At this point, we can tell whether the main code execution succeeded
         # or not.  If it did, we proceed to evaluate user_expressions
         if reply_content['status'] == 'ok':
             reply_content[u'user_expressions'] = \
                          shell.user_expressions(content.get(u'user_expressions', {}))
         else:
             # If there was an error, don't even try to compute expressions
             reply_content[u'user_expressions'] = {}
 
         # Payloads should be retrieved regardless of outcome, so we can both
         # recover partial output (that could have been generated early in a
         # block, before an error) and clear the payload system always.
         reply_content[u'payload'] = shell.payload_manager.read_payload()
         # Be agressive about clearing the payload because we don't want
         # it to sit in memory until the next execute_request comes in.
         shell.payload_manager.clear_payload()
 
         # Flush output before sending the reply.
         sys.stdout.flush()
         sys.stderr.flush()
         # FIXME: on rare occasions, the flush doesn't seem to make it to the
         # clients... This seems to mitigate the problem, but we definitely need
         # to better understand what's going on.
         if self._execute_sleep:
             time.sleep(self._execute_sleep)
 
         # Send the reply.
         reply_content = json_clean(reply_content)
         
         md['status'] = reply_content['status']
         if reply_content['status'] == 'error' and \
                         reply_content['ename'] == 'UnmetDependency':
                 md['dependencies_met'] = False
 
         reply_msg = self.session.send(stream, u'execute_reply',
                                       reply_content, parent, metadata=md,
                                       ident=ident)
         
         self.log.debug("%s", reply_msg)
 
         if not silent and reply_msg['content']['status'] == u'error':
             self._abort_queues()
 
         self._publish_status(u'idle', parent)
 
     def complete_request(self, stream, ident, parent):
         txt, matches = self._complete(parent)
         matches = {'matches' : matches,
                    'matched_text' : txt,
                    'status' : 'ok'}
         matches = json_clean(matches)
         completion_msg = self.session.send(stream, 'complete_reply',
                                            matches, parent, ident)
         self.log.debug("%s", completion_msg)
 
     def object_info_request(self, stream, ident, parent):
         content = parent['content']
         object_info = self.shell.object_inspect(content['oname'],
                         detail_level = content.get('detail_level', 0)
         )
         # Before we send this object over, we scrub it for JSON usage
         oinfo = json_clean(object_info)
         msg = self.session.send(stream, 'object_info_reply',
                                 oinfo, parent, ident)
         self.log.debug("%s", msg)
 
     def history_request(self, stream, ident, parent):
         # We need to pull these out, as passing **kwargs doesn't work with
         # unicode keys before Python 2.6.5.
         hist_access_type = parent['content']['hist_access_type']
         raw = parent['content']['raw']
         output = parent['content']['output']
         if hist_access_type == 'tail':
             n = parent['content']['n']
             hist = self.shell.history_manager.get_tail(n, raw=raw, output=output,
                                                             include_latest=True)
 
         elif hist_access_type == 'range':
             session = parent['content']['session']
             start = parent['content']['start']
             stop = parent['content']['stop']
             hist = self.shell.history_manager.get_range(session, start, stop,
                                                         raw=raw, output=output)
 
         elif hist_access_type == 'search':
             n = parent['content'].get('n')
             unique = parent['content'].get('unique', False)
             pattern = parent['content']['pattern']
             hist = self.shell.history_manager.search(
                 pattern, raw=raw, output=output, n=n, unique=unique)
 
         else:
             hist = []
         hist = list(hist)
         content = {'history' : hist}
         content = json_clean(content)
         msg = self.session.send(stream, 'history_reply',
                                 content, parent, ident)
         self.log.debug("Sending history reply with %i entries", len(hist))
 
     def connect_request(self, stream, ident, parent):
         if self._recorded_ports is not None:
             content = self._recorded_ports.copy()
         else:
             content = {}
         msg = self.session.send(stream, 'connect_reply',
                                 content, parent, ident)
         self.log.debug("%s", msg)
 
     def kernel_info_request(self, stream, ident, parent):
         vinfo = {
             'protocol_version': protocol_version,
             'ipython_version': ipython_version,
             'language_version': language_version,
             'language': 'python',
         }
         msg = self.session.send(stream, 'kernel_info_reply',
                                 vinfo, parent, ident)
         self.log.debug("%s", msg)
 
     def shutdown_request(self, stream, ident, parent):
         self.shell.exit_now = True
         content = dict(status='ok')
         content.update(parent['content'])
         self.session.send(stream, u'shutdown_reply', content, parent, ident=ident)
         # same content, but different msg_id for broadcasting on IOPub
         self._shutdown_message = self.session.msg(u'shutdown_reply',
                                                   content, parent
         )
 
         self._at_shutdown()
         # call sys.exit after a short delay
         loop = ioloop.IOLoop.instance()
         loop.add_timeout(time.time()+0.1, loop.stop)
 
     #---------------------------------------------------------------------------
     # Engine methods
     #---------------------------------------------------------------------------
 
     def apply_request(self, stream, ident, parent):
         try:
             content = parent[u'content']
             bufs = parent[u'buffers']
             msg_id = parent['header']['msg_id']
         except:
             self.log.error("Got bad msg: %s", parent, exc_info=True)
             return
 
         self._publish_status(u'busy', parent)
 
         # Set the parent message of the display hook and out streams.
         shell = self.shell
         shell.set_parent(parent)
 
         # execute_input_msg = self.session.msg(u'execute_input',{u'code':code}, parent=parent)
         # self.iopub_socket.send(execute_input_msg)
         # self.session.send(self.iopub_socket, u'execute_input', {u'code':code},parent=parent)
         md = self._make_metadata(parent['metadata'])
         try:
             working = shell.user_ns
 
             prefix = "_"+str(msg_id).replace("-","")+"_"
 
             f,args,kwargs = unpack_apply_message(bufs, working, copy=False)
 
             fname = getattr(f, '__name__', 'f')
 
             fname = prefix+"f"
             argname = prefix+"args"
             kwargname = prefix+"kwargs"
             resultname = prefix+"result"
 
             ns = { fname : f, argname : args, kwargname : kwargs , resultname : None }
             # print ns
             working.update(ns)
             code = "%s = %s(*%s,**%s)" % (resultname, fname, argname, kwargname)
             try:
                 exec(code, shell.user_global_ns, shell.user_ns)
                 result = working.get(resultname)
             finally:
                 for key in ns:
                     working.pop(key)
 
             result_buf = serialize_object(result,
                 buffer_threshold=self.session.buffer_threshold,
                 item_threshold=self.session.item_threshold,
             )
         
         except:
             # invoke IPython traceback formatting
             shell.showtraceback()
             # FIXME - fish exception info out of shell, possibly left there by
             # run_code.  We'll need to clean up this logic later.
             reply_content = {}
             if shell._reply_content is not None:
                 reply_content.update(shell._reply_content)
                 e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method='apply')
                 reply_content['engine_info'] = e_info
                 # reset after use
                 shell._reply_content = None
             
             self.session.send(self.iopub_socket, u'error', reply_content, parent=parent,
                                 ident=self._topic('error'))
             self.log.info("Exception in apply request:\n%s", '\n'.join(reply_content['traceback']))
             result_buf = []
 
             if reply_content['ename'] == 'UnmetDependency':
                 md['dependencies_met'] = False
         else:
             reply_content = {'status' : 'ok'}
 
         # put 'ok'/'error' status in header, for scheduler introspection:
         md['status'] = reply_content['status']
 
         # flush i/o
         sys.stdout.flush()
         sys.stderr.flush()
         
         reply_msg = self.session.send(stream, u'apply_reply', reply_content,
                     parent=parent, ident=ident,buffers=result_buf, metadata=md)
 
         self._publish_status(u'idle', parent)
 
     #---------------------------------------------------------------------------
     # Control messages
     #---------------------------------------------------------------------------
 
     def abort_request(self, stream, ident, parent):
         """abort a specifig msg by id"""
         msg_ids = parent['content'].get('msg_ids', None)
         if isinstance(msg_ids, string_types):
             msg_ids = [msg_ids]
         if not msg_ids:
             self.abort_queues()
         for mid in msg_ids:
             self.aborted.add(str(mid))
 
         content = dict(status='ok')
         reply_msg = self.session.send(stream, 'abort_reply', content=content,
                 parent=parent, ident=ident)
         self.log.debug("%s", reply_msg)
 
     def clear_request(self, stream, idents, parent):
         """Clear our namespace."""
         self.shell.reset(False)
         msg = self.session.send(stream, 'clear_reply', ident=idents, parent=parent,
                 content = dict(status='ok'))
 
 
     #---------------------------------------------------------------------------
     # Protected interface
     #---------------------------------------------------------------------------
 
     def _wrap_exception(self, method=None):
         # import here, because _wrap_exception is only used in parallel,
         # and parallel has higher min pyzmq version
         from IPython.parallel.error import wrap_exception
         e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method=method)
         content = wrap_exception(e_info)
         return content
 
     def _topic(self, topic):
         """prefixed topic for IOPub messages"""
         if self.int_id >= 0:
             base = "engine.%i" % self.int_id
         else:
             base = "kernel.%s" % self.ident
         
         return py3compat.cast_bytes("%s.%s" % (base, topic))
     
     def _abort_queues(self):
         for stream in self.shell_streams:
             if stream:
                 self._abort_queue(stream)
 
     def _abort_queue(self, stream):
         poller = zmq.Poller()
         poller.register(stream.socket, zmq.POLLIN)
         while True:
             idents,msg = self.session.recv(stream, zmq.NOBLOCK, content=True)
             if msg is None:
                 return
 
             self.log.info("Aborting:")
             self.log.info("%s", msg)
             msg_type = msg['header']['msg_type']
             reply_type = msg_type.split('_')[0] + '_reply'
 
             status = {'status' : 'aborted'}
             md = {'engine' : self.ident}
             md.update(status)
             reply_msg = self.session.send(stream, reply_type, metadata=md,
                         content=status, parent=msg, ident=idents)
             self.log.debug("%s", reply_msg)
             # We need to wait a bit for requests to come in. This can probably
             # be set shorter for true asynchronous clients.
             poller.poll(50)
 
 
     def _no_raw_input(self):
         """Raise StdinNotImplentedError if active frontend doesn't support
         stdin."""
         raise StdinNotImplementedError("raw_input was called, but this "
                                        "frontend does not support stdin.") 
-        
-    def _raw_input(self, prompt, ident, parent):
+    
+    def _raw_input(self, prompt, ident, parent, password=False):
         # Flush output before making the request.
         sys.stderr.flush()
         sys.stdout.flush()
         # flush the stdin socket, to purge stale replies
         while True:
             try:
                 self.stdin_socket.recv_multipart(zmq.NOBLOCK)
             except zmq.ZMQError as e:
                 if e.errno == zmq.EAGAIN:
                     break
                 else:
                     raise
         
         # Send the input request.
-        content = json_clean(dict(prompt=prompt))
+        content = json_clean(dict(prompt=prompt, password=password))
         self.session.send(self.stdin_socket, u'input_request', content, parent,
                           ident=ident)
 
         # Await a response.
         while True:
             try:
                 ident, reply = self.session.recv(self.stdin_socket, 0)
             except Exception:
                 self.log.warn("Invalid Message:", exc_info=True)
             except KeyboardInterrupt:
                 # re-raise KeyboardInterrupt, to truncate traceback
                 raise KeyboardInterrupt
             else:
                 break
         try:
             value = py3compat.unicode_to_str(reply['content']['value'])
         except:
             self.log.error("Got bad raw_input reply: ")
             self.log.error("%s", parent)
             value = ''
         if value == '\x04':
             # EOF
             raise EOFError
         return value
 
     def _complete(self, msg):
         c = msg['content']
         try:
             cpos = int(c['cursor_pos'])
         except:
             # If we don't get something that we can convert to an integer, at
             # least attempt the completion guessing the cursor is at the end of
             # the text, if there's any, and otherwise of the line
             cpos = len(c['text'])
             if cpos==0:
                 cpos = len(c['line'])
         return self.shell.complete(c['text'], c['line'], cpos)
 
     def _at_shutdown(self):
         """Actions taken at shutdown by the kernel, called by python's atexit.
         """
         # io.rprint("Kernel at_shutdown") # dbg
         if self._shutdown_message is not None:
             self.session.send(self.iopub_socket, self._shutdown_message, ident=self._topic('shutdown'))
             self.log.debug("%s", self._shutdown_message)
         [ s.flush(zmq.POLLOUT) for s in self.shell_streams ]