Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 392 insertions, 0 deletions

diff --git a/browser/actors/PageInfoChild.sys.mjs b/browser/actors/PageInfoChild.sys.mjs
new file mode 100644
index 0000000000..80a45fc817
--- /dev/null
+++ b/browser/actors/PageInfoChild.sys.mjs
@@ -0,0 +1,392 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  E10SUtils: "resource://gre/modules/E10SUtils.sys.mjs",
+  PrivateBrowsingUtils: "resource://gre/modules/PrivateBrowsingUtils.sys.mjs",
+  setTimeout: "resource://gre/modules/Timer.sys.mjs",
+});
+
+export class PageInfoChild extends JSWindowActorChild {
+  async receiveMessage(message) {
+    let window = this.contentWindow;
+    let document = window.document;
+
+    //Handles two different types of messages: one for general info (PageInfo:getData)
+    //and one for media info (PageInfo:getMediaData)
+    switch (message.name) {
+      case "PageInfo:getData": {
+        return Promise.resolve({
+          metaViewRows: this.getMetaInfo(document),
+          docInfo: this.getDocumentInfo(document),
+          windowInfo: this.getWindowInfo(window),
+        });
+      }
+      case "PageInfo:getMediaData": {
+        return Promise.resolve({
+          mediaItems: await this.getDocumentMedia(document),
+        });
+      }
+    }
+
+    return undefined;
+  }
+
+  getMetaInfo(document) {
+    let metaViewRows = [];
+
+    // Get the meta tags from the page.
+    let metaNodes = document.getElementsByTagName("meta");
+
+    for (let metaNode of metaNodes) {
+      metaViewRows.push([
+        metaNode.name ||
+          metaNode.httpEquiv ||
+          metaNode.getAttribute("property"),
+        metaNode.content,
+      ]);
+    }
+
+    return metaViewRows;
+  }
+
+  getWindowInfo(window) {
+    let windowInfo = {};
+    windowInfo.isTopWindow = window == window.top;
+
+    let hostName = null;
+    try {
+      hostName = Services.io.newURI(window.location.href).displayHost;
+    } catch (exception) {}
+
+    windowInfo.hostName = hostName;
+    return windowInfo;
+  }
+
+  getDocumentInfo(document) {
+    let docInfo = {};
+    docInfo.title = document.title;
+    docInfo.location = document.location.toString();
+    try {
+      docInfo.location = Services.io.newURI(
+        document.location.toString()
+      ).displaySpec;
+    } catch (exception) {}
+    docInfo.referrer = document.referrer;
+    try {
+      if (document.referrer) {
+        docInfo.referrer = Services.io.newURI(document.referrer).displaySpec;
+      }
+    } catch (exception) {}
+    docInfo.compatMode = document.compatMode;
+    docInfo.contentType = document.contentType;
+    docInfo.characterSet = document.characterSet;
+    docInfo.lastModified = document.lastModified;
+    docInfo.principal = document.nodePrincipal;
+    docInfo.cookieJarSettings = lazy.E10SUtils.serializeCookieJarSettings(
+      document.cookieJarSettings
+    );
+
+    let documentURIObject = {};
+    documentURIObject.spec = document.documentURIObject.spec;
+    docInfo.documentURIObject = documentURIObject;
+
+    docInfo.isContentWindowPrivate =
+      lazy.PrivateBrowsingUtils.isContentWindowPrivate(document.ownerGlobal);
+
+    return docInfo;
+  }
+
+  /**
+   * Returns an array that stores all mediaItems found in the document
+   * Calls getMediaItems for all nodes within the constructed tree walker and forms
+   * resulting array.
+   */
+  async getDocumentMedia(document) {
+    let nodeCount = 0;
+    let content = document.ownerGlobal;
+    let iterator = document.createTreeWalker(
+      document,
+      content.NodeFilter.SHOW_ELEMENT
+    );
+
+    let totalMediaItems = [];
+
+    while (iterator.nextNode()) {
+      let mediaItems = this.getMediaItems(document, iterator.currentNode);
+
+      if (++nodeCount % 500 == 0) {
+        // setTimeout every 500 elements so we don't keep blocking the content process.
+        await new Promise(resolve => lazy.setTimeout(resolve, 10));
+      }
+      totalMediaItems.push(...mediaItems);
+    }
+
+    return totalMediaItems;
+  }
+
+  getMediaItems(document, elem) {
+    // Check for images defined in CSS (e.g. background, borders)
+    let computedStyle = elem.ownerGlobal.getComputedStyle(elem);
+    // A node can have multiple media items associated with it - for example,
+    // multiple background images.
+    let mediaItems = [];
+    let content = document.ownerGlobal;
+
+    let addMedia = (url, type, alt, el, isBg, altNotProvided = false) => {
+      let element = this.serializeElementInfo(document, url, el, isBg);
+      mediaItems.push({
+        url,
+        type,
+        alt,
+        altNotProvided,
+        element,
+        isBg,
+      });
+    };
+
+    if (computedStyle) {
+      let addImgFunc = (type, urls) => {
+        for (let url of urls) {
+          addMedia(url, type, "", elem, true, true);
+        }
+      };
+      // FIXME: This is missing properties. See the implementation of
+      // getCSSImageURLs for a list of properties.
+      //
+      // If you don't care about the message you can also pass "all" here and
+      // get all the ones the browser knows about.
+      addImgFunc("bg-img", computedStyle.getCSSImageURLs("background-image"));
+      addImgFunc(
+        "border-img",
+        computedStyle.getCSSImageURLs("border-image-source")
+      );
+      addImgFunc("list-img", computedStyle.getCSSImageURLs("list-style-image"));
+      addImgFunc("cursor", computedStyle.getCSSImageURLs("cursor"));
+    }
+
+    // One swi^H^H^Hif-else to rule them all.
+    if (content.HTMLImageElement.isInstance(elem)) {
+      addMedia(
+        elem.src,
+        "img",
+        elem.getAttribute("alt"),
+        elem,
+        false,
+        !elem.hasAttribute("alt")
+      );
+    } else if (content.SVGImageElement.isInstance(elem)) {
+      try {
+        // Note: makeURLAbsolute will throw if either the baseURI is not a valid URI
+        //       or the URI formed from the baseURI and the URL is not a valid URI.
+        if (elem.href.baseVal) {
+          let href = Services.io.newURI(
+            elem.href.baseVal,
+            null,
+            Services.io.newURI(elem.baseURI)
+          ).spec;
+          addMedia(href, "img", "", elem, false);
+        }
+      } catch (e) {}
+    } else if (content.HTMLVideoElement.isInstance(elem)) {
+      addMedia(elem.currentSrc, "video", "", elem, false);
+    } else if (content.HTMLAudioElement.isInstance(elem)) {
+      addMedia(elem.currentSrc, "audio", "", elem, false);
+    } else if (content.HTMLLinkElement.isInstance(elem)) {
+      if (elem.rel && /\bicon\b/i.test(elem.rel)) {
+        addMedia(elem.href, "link", "", elem, false);
+      }
+    } else if (
+      content.HTMLInputElement.isInstance(elem) ||
+      content.HTMLButtonElement.isInstance(elem)
+    ) {
+      if (elem.type.toLowerCase() == "image") {
+        addMedia(
+          elem.src,
+          "input",
+          elem.getAttribute("alt"),
+          elem,
+          false,
+          !elem.hasAttribute("alt")
+        );
+      }
+    } else if (content.HTMLObjectElement.isInstance(elem)) {
+      addMedia(elem.data, "object", this.getValueText(elem), elem, false);
+    } else if (content.HTMLEmbedElement.isInstance(elem)) {
+      addMedia(elem.src, "embed", "", elem, false);
+    }
+
+    return mediaItems;
+  }
+
+  /**
+   * Set up a JSON element object with all the instanceOf and other infomation that
+   * makePreview in pageInfo.js uses to figure out how to display the preview.
+   */
+
+  serializeElementInfo(document, url, item, isBG) {
+    let result = {};
+    let content = document.ownerGlobal;
+
+    let imageText;
+    if (
+      !isBG &&
+      !content.SVGImageElement.isInstance(item) &&
+      !content.ImageDocument.isInstance(document)
+    ) {
+      imageText = item.title || item.alt;
+
+      if (!imageText && !content.HTMLImageElement.isInstance(item)) {
+        imageText = this.getValueText(item);
+      }
+    }
+
+    result.imageText = imageText;
+    result.longDesc = item.longDesc;
+    result.numFrames = 1;
+
+    if (
+      content.HTMLObjectElement.isInstance(item) ||
+      content.HTMLEmbedElement.isInstance(item) ||
+      content.HTMLLinkElement.isInstance(item)
+    ) {
+      result.mimeType = item.type;
+    }
+
+    if (
+      !result.mimeType &&
+      !isBG &&
+      item instanceof Ci.nsIImageLoadingContent
+    ) {
+      // Interface for image loading content.
+      let imageRequest = item.getRequest(
+        Ci.nsIImageLoadingContent.CURRENT_REQUEST
+      );
+      if (imageRequest) {
+        result.mimeType = imageRequest.mimeType;
+        let image =
+          !(imageRequest.imageStatus & imageRequest.STATUS_ERROR) &&
+          imageRequest.image;
+        if (image) {
+          result.numFrames = image.numFrames;
+        }
+      }
+    }
+
+    // If we have a data url, get the MIME type from the url.
+    if (!result.mimeType && url.startsWith("data:")) {
+      let dataMimeType = /^data:(image\/[^;,]+)/i.exec(url);
+      if (dataMimeType) {
+        result.mimeType = dataMimeType[1].toLowerCase();
+      }
+    }
+
+    result.HTMLLinkElement = content.HTMLLinkElement.isInstance(item);
+    result.HTMLInputElement = content.HTMLInputElement.isInstance(item);
+    result.HTMLImageElement = content.HTMLImageElement.isInstance(item);
+    result.HTMLObjectElement = content.HTMLObjectElement.isInstance(item);
+    result.SVGImageElement = content.SVGImageElement.isInstance(item);
+    result.HTMLVideoElement = content.HTMLVideoElement.isInstance(item);
+    result.HTMLAudioElement = content.HTMLAudioElement.isInstance(item);
+
+    if (isBG) {
+      // Items that are showing this image as a background
+      // image might not necessarily have a width or height,
+      // so we'll dynamically generate an image and send up the
+      // natural dimensions.
+      let img = content.document.createElement("img");
+      img.src = url;
+      result.naturalWidth = img.naturalWidth;
+      result.naturalHeight = img.naturalHeight;
+    } else if (!content.SVGImageElement.isInstance(item)) {
+      // SVG items do not have integer values for height or width,
+      // so we must handle them differently in order to correctly
+      // serialize
+
+      // Otherwise, we can use the current width and height
+      // of the image.
+      result.width = item.width;
+      result.height = item.height;
+    }
+
+    if (content.SVGImageElement.isInstance(item)) {
+      result.SVGImageElementWidth = item.width.baseVal.value;
+      result.SVGImageElementHeight = item.height.baseVal.value;
+    }
+
+    result.baseURI = item.baseURI;
+
+    return result;
+  }
+
+  // Other Misc Stuff
+  // Modified from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html
+  // parse a node to extract the contents of the node
+  getValueText(node) {
+    let valueText = "";
+    let content = node.ownerGlobal;
+
+    // Form input elements don't generally contain information that is useful to our callers, so return nothing.
+    if (
+      content.HTMLInputElement.isInstance(node) ||
+      content.HTMLSelectElement.isInstance(node) ||
+      content.HTMLTextAreaElement.isInstance(node)
+    ) {
+      return valueText;
+    }
+
+    // Otherwise recurse for each child.
+    let length = node.childNodes.length;
+
+    for (let i = 0; i < length; i++) {
+      let childNode = node.childNodes[i];
+      let nodeType = childNode.nodeType;
+
+      // Text nodes are where the goods are.
+      if (nodeType == content.Node.TEXT_NODE) {
+        valueText += " " + childNode.nodeValue;
+      } else if (nodeType == content.Node.ELEMENT_NODE) {
+        // And elements can have more text inside them.
+        // Images are special, we want to capture the alt text as if the image weren't there.
+        if (content.HTMLImageElement.isInstance(childNode)) {
+          valueText += " " + this.getAltText(childNode);
+        } else {
+          valueText += " " + this.getValueText(childNode);
+        }
+      }
+    }
+
+    return this.stripWS(valueText);
+  }
+
+  // Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html.
+  // Traverse the tree in search of an img or area element and grab its alt tag.
+  getAltText(node) {
+    let altText = "";
+
+    if (node.alt) {
+      return node.alt;
+    }
+    let length = node.childNodes.length;
+    for (let i = 0; i < length; i++) {
+      if ((altText = this.getAltText(node.childNodes[i]) != undefined)) {
+        // stupid js warning...
+        return altText;
+      }
+    }
+    return "";
+  }
+
+  // Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html.
+  // Strip leading and trailing whitespace, and replace multiple consecutive whitespace characters with a single space.
+  stripWS(text) {
+    let middleRE = /\s+/g;
+    let endRE = /(^\s+)|(\s+$)/g;
+
+    text = text.replace(middleRE, " ");
+    return text.replace(endRE, "");
+  }
+}