From 5c0a6c8343e5bd422e8bbe0e32ccdd9698e84b9f Mon Sep 17 00:00:00 2001
From: Daniel Pascual <daniel.s.pascual@gmail.com>
Date: Tue, 1 Jun 2021 17:49:11 +0200
Subject: [PATCH 1/3] Remove the ability to inject prechached html into the
 iframe

---
 dist/vt-augment.min.js |  74 +++++++-----------
 src/vt-augment.js      | 167 ++++-------------------------------------
 2 files changed, 44 insertions(+), 197 deletions(-)

diff --git a/dist/vt-augment.min.js b/dist/vt-augment.min.js
index 4987c96..e3f8ef4 100644
--- a/dist/vt-augment.min.js
+++ b/dist/vt-augment.min.js
@@ -13,41 +13,24 @@
  Copyright The Closure Library Authors.
  SPDX-License-Identifier: Apache-2.0
 */
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+function Z(a,b){var c=this;this.g=a;this.j=b||{};mb();this.g.classList.add("vt-augment");this.j.background&&(this.g.style.background=this.j.background);this.j.mode&&"drawer"!==this.j.mode||this.g.classList.add("drawer");document.body.addEventListener("click",function(d){d.target!==c.g&&c.m()});window.addEventListener("message",function(d){switch(d.data){case "VTAUGMENT:READY":c.o(!1);break;case "VTAUGMENT:CLOSE":c.m();break;case "VTAUGMENT:CLEAR_CACHE":if(d=c.g.querySelector("iframe"))d.src=d.src}})}
+Z.prototype.load=function(a){if(!a)return this;a=a.split("/").pop();a=pa({token:a});var b=new E(oa(a).toString(),F);(a=this.g.querySelector("iframe"))&&a.parentNode.removeChild(a);this.o(!0);a=this.g;var c={style:{width:"100%",height:"100%",border:"0"},A:0};if(b){var d=document.createElement("div");d.style.display="none";if(!(k.HTMLIFrameElement&&"sandbox"in k.HTMLIFrameElement.prototype))throw Error("The browser does not support sandboxed iframes.");var f={};f.src=b?G(H(b)||I):null;f.srcdoc=null;
+f.sandbox="";var e={};b={};for(var h in f)Object.prototype.hasOwnProperty.call(f,h)&&(b[h]=f[h]);for(h in e)Object.prototype.hasOwnProperty.call(e,h)&&(b[h]=e[h]);if(c)for(h in c)if(Object.prototype.hasOwnProperty.call(c,h)){var g=h.toLowerCase();if(g in f)throw Error('Cannot override "'+g+'" attribute, got "'+h+'" with value "'+c[h]+'"');g in e&&delete b[g];b[h]=c[h]}h=null;c="";if(b)for(p in b)if(Object.prototype.hasOwnProperty.call(b,p)){if(!Ra.test(p))throw Error('Invalid attribute name "'+p+
+'".');e=b[p];if(null!=e){f=p;g=e;if(g instanceof v)g=x(g);else if("style"==f.toLowerCase()){e=void 0;if(!n(g))throw Error('The "style" attribute requires goog.html.SafeStyle or map of style properties, '+typeof g+" given: "+g);if(!(g instanceof J)){var D="";for(e in g)if(Object.prototype.hasOwnProperty.call(g,e)){if(!/^[-_a-zA-Z0-9]+$/.test(e))throw Error("Name allows only [-_a-zA-Z0-9], got: "+e);var z=g[e];null!=z&&(z=Array.isArray(z)?fa(z,Ea).join(" "):Ea(z),D+=e+":"+z+";")}g=D?new J(D,K):Da}g instanceof
+J&&g.constructor===J?e=g.g:(u("expected object of type SafeStyle, got '"+g+"' of type "+m(g)),e="type_error:SafeStyle");g=e}else{if(/^on/i.test(f))throw Error('Attribute "'+f+'" requires goog.string.Const value, "'+g+'" given.');if(f.toLowerCase()in Sa)if(g instanceof B)g=oa(g).toString();else if(g instanceof E)g=G(g);else if("string"===typeof g)g=(H(g)||I).i();else throw Error('Attribute "'+f+'" on tag "iframe" requires goog.html.SafeUrl, goog.string.Const, or string, value "'+g+'" given.');}g.l&&
+(g=g.i());f=f+'="'+C(String(g))+'"';c+=" "+f}}var p="<iframe"+c;c=void 0;null==c?c=[]:Array.isArray(c)||(c=[c]);!0===la.iframe?p+=">":(h=Va(c),p+=">"+Q(h).toString()+"</iframe>",h=h.g());(b=b&&b.dir)&&(/^(ltr|rtl|auto)$/i.test(b)?h=0:h=null);p=R(p,h);if(d.tagName&&Wa[d.tagName.toUpperCase()])throw Error("goog.dom.safe.setInnerHtml cannot be used to set content of "+d.tagName+".");if(Xa())for(;d.lastChild;)d.removeChild(d.lastChild);d.innerHTML=Q(p);d.firstChild.setAttribute("sandbox","allow-scripts allow-same-origin allow-popups");
+a.appendChild(d.removeChild(d.firstChild))}return this};Z.prototype.preload=function(){return this};Z.prototype.u=function(){this.g.setAttribute("opened","");return this};Z.prototype.m=function(){this.g.removeAttribute("opened");return this};Z.prototype.o=function(a){var b=this.g,c=b.querySelector("div.spinner");c||(c=document.createElement("div"),c.classList.add("spinner"),b.appendChild(c));b=this.g.querySelector("iframe");c.style.display=a?"block":"none";b&&(b.style.display=a?"none":"block");return this};
+function mb(){var a=document.createElement("style");var b=x(new v(w,"\n  .vt-augment {\n    display: flex;\n    justify-content: center;\n    align-items: center;\n  }\n  .vt-augment.drawer {\n    width: 700px;\n    background: white;\n    border: 1px solid #e6e6e6;\n    text-align: left;\n    z-index: 102;\n    position: fixed;\n    right: 0;\n    top: 0;\n    height: 100vh;\n    box-shadow: -4px 5px 8px -3px rgba(17, 17, 17, .16);\n    animation: slideToRight 0.5s 1 forwards;\n    transform: translateX(100vw);\n  }\n  .vt-augment.drawer[opened] {\n    animation: slideFromRight 0.2s 1 forwards;\n  }\n  .vt-augment > .spinner {\n    position: absolute;\n    z-index: 199;\n    top: calc(50% - 50px);\n    left: calc(50% - 50px);\n    border: 8px solid rgba(0, 0, 0, 0.2);\n    border-left-color: white;\n    border-radius: 50%;\n    width: 50px;\n    height: 50px;\n    animation: spin 1.2s linear infinite;\n  }\n  @keyframes spin {\n    to { transform: rotate(360deg); }\n  }\n  @keyframes slideFromRight {\n    0% {\n      transform: translateX(100vw);\n    }\n    100% {\n      transform: translateX(0);\n    }\n  }\n  @keyframes slideToRight {\n    100% {\n      transform: translateX(100vw);\n      display: none;\n    }\n  }\n  @media screen and (max-width: 700px) {\n    .vt-augment.drawer {\n      width: 100%;\n    }\n  }\n"));
+b=0===b.length?Na:new M(b,L);var c=a?new jb(9==a.nodeType?a:a.ownerDocument||a.document):da||(da=new jb),d=c.g;if(S&&d.createStyleSheet)d=d.createStyleSheet(),lb(d,b);else{d=kb(c,"HEAD")[0];if(!d){var f=kb(c,"BODY")[0];d=c.j("HEAD");f.parentNode.insertBefore(d,f)}c=c.j("STYLE");if(null===l)b:{f=k.document;if((f=f.querySelector&&f.querySelector("script[nonce]"))&&(f=f.nonce||f.getAttribute("nonce"))&&aa.test(f)){l=f;break b}l=""}(f=l)&&c.setAttribute("nonce",f);lb(c,b);d.appendChild(c)}document.body.appendChild(a)}
+Z.prototype.loading=Z.prototype.o;Z.prototype.closeDrawer=Z.prototype.m;Z.prototype.openDrawer=Z.prototype.u;Z.prototype.preload=Z.prototype.preload;Z.prototype.load=Z.prototype.load;window.VTAugment=Z;
 }.bind(this)));
 
diff --git a/src/vt-augment.js b/src/vt-augment.js
index 1cf1004..1abc4ec 100644
--- a/src/vt-augment.js
+++ b/src/vt-augment.js
@@ -32,6 +32,7 @@ goog.module('vtaugment');
 
 const Const = goog.require('goog.string.Const');
 const SafeHtml = goog.require('goog.html.SafeHtml');
+const SafeUrl = goog.require('goog.html.SafeUrl');
 const SafeStyleSheet = goog.require('goog.html.SafeStyleSheet');
 const TrustedResourceUrl = goog.require('goog.html.TrustedResourceUrl');
 const {installSafeStyleSheet} = goog.require('goog.style');
@@ -105,65 +106,14 @@ const CSS_STYLESHEET = `
   }
 `;
 
-
-/**
- * Internal cache to store iframe html content.
- * @private
- */
-class Cache {
-  constructor() {
-    this.store = new Map();
-  }
-
-  /**
-   * @public
-   * @param {string} key
-   * @return {!string|undefined}
-   */
-  get(key) {
-    return this.store.get(key);
-  }
-
-  /**
-   * @public
-   * @param {string} key
-   * @param {!Object|null|string} value
-   * @return {void}
-   */
-  set(key, value) {
-    this.store.set(key, value);
-  }
-
-  /**
-   * @public
-   * @param {string} key
-   * @return {boolean}
-   */
-  remove(key) {
-    return this.store.delete(key);
-  }
-
-  /**
-   * @public
-   * @return {void}
-   */
-  flush() {
-    this.store = new Map();
-  }
-}
-
-
 class VTAugment {
   /**
    * @param {!Element} container
    * @param {?Options} options
    */
   constructor(container, options) {
-    this.cache = new Cache();
     this.container = container;
     this.options = options || {};
-    this.isSrcdocSupported = !!('srcdoc' in document.createElement('iframe'))
-        && SafeHtml.canUseSandboxIframe();
 
     this.createStyleSheet_();
 
@@ -196,44 +146,10 @@ class VTAugment {
   load(url) {
     if (!url) return this;
 
-    this.clean_();
-
     const safeUrl = this.safeUrl_(url);
-
-    // iframe html injection not supported, fallback traditional url load
-    if (!this.isSrcdocSupported) {
-      this.loading(true);
-      this.createIframe_(this.container, safeUrl, undefined);
-
-      return this;
-    }
-
-    // html not found in cache neither in fetching process, try to preload it
-    if (!this.getHtml_(url)) {
-      this.loading(true);
-      this.preload(url);
-    }
-
-    // html is still fetching so polling until it is ready
-    if (this.getHtml_(url) === 'fetching') {
-      this.loading(true);
-      const intervalRef = setInterval(() => {
-        const html = this.getHtml_(url);
-
-        if (html && html !== 'fetching') {
-          clearInterval(intervalRef);
-          this.createIframe_(this.container, undefined, html);
-          this.loading(false);
-        } else if (html === null) {
-          clearInterval(intervalRef);
-          this.createIframe_(this.container, safeUrl, undefined);
-        }
-      }, 200);
-    // html is ready for the iframe injection
-    } else {
-      this.createIframe_(this.container, undefined, this.getHtml_(url));
-      this.loading(false);
-    }
+    this.clean_();
+    this.loading(true);
+    this.createIframe_(this.container, safeUrl);
 
     return this;
   }
@@ -243,15 +159,7 @@ class VTAugment {
    * @param {string} url
    */
   preload(url) {
-    // Avoid caching if browser doesn't support iframe content injection
-    if (!this.isSrcdocSupported) {
-      return;
-    }
-
-    if (!this.cache.get(url)) {
-      this.cache.set(url, 'fetching');
-      this.getHtmlAjax_(url);
-    }
+    return this;
   }
 
   /**
@@ -290,15 +198,6 @@ class VTAugment {
     return this;
   }
 
-  /**
-   * @private
-   * @param {string} url
-   * @return {!string|undefined}
-   */
-  getHtml_(url) {
-    return this.cache.get(url);
-  }
-
   /**
    * @private
    */
@@ -312,31 +211,21 @@ class VTAugment {
   /**
    * @private
    * @param {!Element} container
-   * @param {!TrustedResourceUrl|undefined} safeUrl
-   * @param {string|undefined} html
+   * @param {!goog.html.SafeUrl|undefined} safeUrl
    * @return {void}
    */
-  createIframe_(container, safeUrl, html) {
+  createIframe_(container, safeUrl) {
     const iframeAttrs = {
       style: {width: '100%', height: '100%', border: '0'},
       frameborder: 0,
     };
 
-    this.clean_();
-
-    const temp = document.createElement('div');
-    temp.style.display = 'none';
-
     if (safeUrl) {
-      const iframe = SafeHtml.createIframe(safeUrl, undefined, iframeAttrs);
-
-      setInnerHtml(temp, iframe);
-      temp.firstChild.removeAttribute('sandbox');
+      const temp = document.createElement('div');
+      temp.style.display = 'none';
 
-      container.appendChild(temp.removeChild(temp.firstChild));
-    } else {
       const sandboxedIframe = SafeHtml.createSandboxIframe(
-          undefined, html, iframeAttrs);
+          safeUrl, undefined, iframeAttrs);
 
       setInnerHtml(temp, sandboxedIframe);
       temp.firstChild.setAttribute(
@@ -376,31 +265,6 @@ class VTAugment {
     return _spinner;
   }
 
-  /**
-   * @private
-   * @param {string} url
-   */
-  getHtmlAjax_(url) {
-    const xmlhr = new XMLHttpRequest();
-
-    xmlhr.onreadystatechange = () => {
-      if (xmlhr.readyState === XMLHttpRequest.DONE) {
-        if (xmlhr.status === 200) {
-          this.cache.set(url, xmlhr.response);
-        } else {
-          this.loading(false);
-          this.cache.remove(url);
-        }
-      } else {
-        this.loading(false);
-      }
-    };
-
-    xmlhr.open('GET', url, true);
-    xmlhr.withCredentials = true;
-    xmlhr.send();
-  }
-
   /**
    * @private
    * @param {!MessageEvent} messageEvent
@@ -416,7 +280,8 @@ class VTAugment {
           this.closeDrawer();
           break;
         case 'VTAUGMENT:CLEAR_CACHE':
-          this.cache.flush();
+          var iframe = this.container.querySelector('iframe');
+          if (iframe) iframe.src = iframe.src;
           break;
         default:
       }
@@ -425,17 +290,17 @@ class VTAugment {
   /**
    * @private
    * @param {string} url
-   * @return {!TrustedResourceUrl}
+   * @return {!goog.html.SafeUrl}
    */
   safeUrl_(url) {
     const token = url.split('/').pop();
-    const safeVTUrl =
+    const vtUrl =
       Const.from('https://www.virustotal.com/ui/widget/html/%{token}');
-    const safeUrl = TrustedResourceUrl.format(safeVTUrl, {
+    const trustedUrl = TrustedResourceUrl.format(vtUrl, {
       'token': token,
     });
 
-    return safeUrl;
+    return SafeUrl.fromTrustedResourceUrl(trustedUrl);
   }
 }
 

From 41a9687957d955360c4c193a124ff3f3efee288d Mon Sep 17 00:00:00 2001
From: Daniel Pascual <daniel.s.pascual@gmail.com>
Date: Wed, 2 Jun 2021 14:50:28 +0200
Subject: [PATCH 2/3] typing

---
 dist/vt-augment.min.js | 2 +-
 src/vt-augment.js      | 9 +++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/dist/vt-augment.min.js b/dist/vt-augment.min.js
index e3f8ef4..4f31c1d 100644
--- a/dist/vt-augment.min.js
+++ b/dist/vt-augment.min.js
@@ -55,7 +55,7 @@ a:a.ownerDocument||a.document).createTextNode(String(b)))}else a.innerHTML=b};/*
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
 */
-function Z(a,b){var c=this;this.g=a;this.j=b||{};mb();this.g.classList.add("vt-augment");this.j.background&&(this.g.style.background=this.j.background);this.j.mode&&"drawer"!==this.j.mode||this.g.classList.add("drawer");document.body.addEventListener("click",function(d){d.target!==c.g&&c.m()});window.addEventListener("message",function(d){switch(d.data){case "VTAUGMENT:READY":c.o(!1);break;case "VTAUGMENT:CLOSE":c.m();break;case "VTAUGMENT:CLEAR_CACHE":if(d=c.g.querySelector("iframe"))d.src=d.src}})}
+function Z(a,b){var c=this;this.g=a;this.j=b||{};mb();this.g.classList.add("vt-augment");this.j.background&&(this.g.style.background=this.j.background);this.j.mode&&"drawer"!==this.j.mode||this.g.classList.add("drawer");document.body.addEventListener("click",function(d){d.target!==c.g&&c.m()});window.addEventListener("message",function(d){switch(d.data){case "VTAUGMENT:READY":c.o(!1);break;case "VTAUGMENT:CLOSE":c.m();break;case "VTAUGMENT:CLEAR_CACHE":(d=c.g.querySelector("iframe"))&&c.load(d.src)}})}
 Z.prototype.load=function(a){if(!a)return this;a=a.split("/").pop();a=pa({token:a});var b=new E(oa(a).toString(),F);(a=this.g.querySelector("iframe"))&&a.parentNode.removeChild(a);this.o(!0);a=this.g;var c={style:{width:"100%",height:"100%",border:"0"},A:0};if(b){var d=document.createElement("div");d.style.display="none";if(!(k.HTMLIFrameElement&&"sandbox"in k.HTMLIFrameElement.prototype))throw Error("The browser does not support sandboxed iframes.");var f={};f.src=b?G(H(b)||I):null;f.srcdoc=null;
 f.sandbox="";var e={};b={};for(var h in f)Object.prototype.hasOwnProperty.call(f,h)&&(b[h]=f[h]);for(h in e)Object.prototype.hasOwnProperty.call(e,h)&&(b[h]=e[h]);if(c)for(h in c)if(Object.prototype.hasOwnProperty.call(c,h)){var g=h.toLowerCase();if(g in f)throw Error('Cannot override "'+g+'" attribute, got "'+h+'" with value "'+c[h]+'"');g in e&&delete b[g];b[h]=c[h]}h=null;c="";if(b)for(p in b)if(Object.prototype.hasOwnProperty.call(b,p)){if(!Ra.test(p))throw Error('Invalid attribute name "'+p+
 '".');e=b[p];if(null!=e){f=p;g=e;if(g instanceof v)g=x(g);else if("style"==f.toLowerCase()){e=void 0;if(!n(g))throw Error('The "style" attribute requires goog.html.SafeStyle or map of style properties, '+typeof g+" given: "+g);if(!(g instanceof J)){var D="";for(e in g)if(Object.prototype.hasOwnProperty.call(g,e)){if(!/^[-_a-zA-Z0-9]+$/.test(e))throw Error("Name allows only [-_a-zA-Z0-9], got: "+e);var z=g[e];null!=z&&(z=Array.isArray(z)?fa(z,Ea).join(" "):Ea(z),D+=e+":"+z+";")}g=D?new J(D,K):Da}g instanceof
diff --git a/src/vt-augment.js b/src/vt-augment.js
index 1abc4ec..744044e 100644
--- a/src/vt-augment.js
+++ b/src/vt-augment.js
@@ -211,7 +211,7 @@ class VTAugment {
   /**
    * @private
    * @param {!Element} container
-   * @param {!goog.html.SafeUrl|undefined} safeUrl
+   * @param {!SafeUrl|undefined} safeUrl
    * @return {void}
    */
   createIframe_(container, safeUrl) {
@@ -280,8 +280,9 @@ class VTAugment {
           this.closeDrawer();
           break;
         case 'VTAUGMENT:CLEAR_CACHE':
-          var iframe = this.container.querySelector('iframe');
-          if (iframe) iframe.src = iframe.src;
+          const iframe = /** @type {?HTMLIFrameElement} */ (
+              this.container.querySelector('iframe'));
+          if (iframe) this.load(iframe.src);
           break;
         default:
       }
@@ -290,7 +291,7 @@ class VTAugment {
   /**
    * @private
    * @param {string} url
-   * @return {!goog.html.SafeUrl}
+   * @return {!SafeUrl}
    */
   safeUrl_(url) {
     const token = url.split('/').pop();

From a5a78cf96f3f6570fc0f69912a89b0f830e9fb46 Mon Sep 17 00:00:00 2001
From: Daniel Pascual <daniel.s.pascual@gmail.com>
Date: Wed, 2 Jun 2021 15:57:24 +0200
Subject: [PATCH 3/3] Update doc & version

---
 README.md    | 13 ++-----------
 package.json |  2 +-
 2 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/README.md b/README.md
index 857a878..dc6766c 100644
--- a/README.md
+++ b/README.md
@@ -61,8 +61,8 @@ Creates a new object with a html element and a set of options. An iframe is dyna
 
 *Methods can be chained and can be called in whatever order.*
 
-| [load](#loadurl-string) | [preload](#preloadurl-string) | [openDrawer](#opendrawer) | [closeDrawer](#closedrawer) | [loading](#loading(active-boolean))
-|-----|-----|-----|-----|-----|
+| [load](#loadurl-string) | [openDrawer](#opendrawer) | [closeDrawer](#closedrawer) | [loading](#loading(active-boolean))
+|-----|-----|-----|-----|
 
 #### load(url: string)
 
@@ -77,15 +77,6 @@ vtaugment.load("...").openDrawer()
 
 ```
 
-#### preload(url: string)
-
-Load the html and cache it ready to show the content as soon as you call the `load` method. Typically this method is used linked to a `mouseover` event in the link or the surrounded area of the link.
-
-```js
-vtaugment.preload("...")
-
-```
-
 #### openDrawer()
 
 Open a drawer panel from the right side. (Only works in [drawer](#drawer) mode)
diff --git a/package.json b/package.json
index f1e3fae..1d9235e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@virustotal/vt-augment",
-    "version": "1.5.5",
+    "version": "1.6.0",
     "description": "Client library that wraps common patterns when interact with the VirusTotal Augment product",
     "main": "dist/vt-augment.min.js",
     "keywords": [