| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/renderer/web_page_metadata_extraction.h" |
| |
| #include <stddef.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include "chrome/common/web_page_metadata.mojom.h" |
| #include "third_party/blink/public/platform/web_icon_sizes_parser.h" |
| #include "third_party/blink/public/platform/web_string.h" |
| #include "third_party/blink/public/platform/web_url.h" |
| #include "third_party/blink/public/web/web_document.h" |
| #include "third_party/blink/public/web/web_element.h" |
| #include "third_party/blink/public/web/web_local_frame.h" |
| #include "third_party/blink/public/web/web_node.h" |
| #include "url/gurl.h" |
| |
| using blink::WebDocument; |
| using blink::WebElement; |
| using blink::WebLocalFrame; |
| using blink::WebNode; |
| using blink::WebString; |
| |
| namespace chrome { |
| namespace { |
| |
| void AddInstallIcon(const WebElement& link, |
| std::vector<mojom::WebPageIconInfoPtr>* icons) { |
| WebString href = link.GetAttribute("href"); |
| if (href.IsNull() || href.IsEmpty()) |
| return; |
| |
| // Get complete url. |
| GURL url = link.GetDocument().CompleteURL(href); |
| if (!url.is_valid()) |
| return; |
| |
| mojom::WebPageIconInfoPtr icon_info(mojom::WebPageIconInfo::New()); |
| if (link.HasAttribute("sizes")) { |
| blink::WebVector<blink::WebSize> icon_sizes = |
| blink::WebIconSizesParser::ParseIconSizes(link.GetAttribute("sizes")); |
| if (icon_sizes.size() == 1 && icon_sizes[0].width != 0 && |
| icon_sizes[0].height == icon_sizes[0].width) { |
| icon_info->square_size_px = icon_sizes[0].width; |
| } |
| } |
| icon_info->url = url; |
| icons->push_back(std::move(icon_info)); |
| } |
| |
| } // namespace |
| |
| mojom::WebPageMetadataPtr ExtractWebPageMetadata(WebLocalFrame* frame) { |
| mojom::WebPageMetadataPtr metadata(mojom::WebPageMetadata::New()); |
| |
| WebDocument document = frame->GetDocument(); |
| if (document.IsNull()) |
| return metadata; |
| |
| WebElement head = document.Head(); |
| if (head.IsNull()) |
| return metadata; |
| |
| GURL document_url = document.Url(); |
| for (WebNode child = head.FirstChild(); !child.IsNull(); |
| child = child.NextSibling()) { |
| if (!child.IsElementNode()) |
| continue; |
| WebElement elem = child.To<WebElement>(); |
| |
| if (elem.HasHTMLTagName("link")) { |
| std::string rel = elem.GetAttribute("rel").Utf8(); |
| // "rel" attribute may use either "icon" or "shortcut icon". |
| // see also |
| // <http://en.wikipedia.org/wiki/Favicon> |
| // <http://dev.w3.org/html5/spec/Overview.html#rel-icon> |
| // |
| // Bookmark apps also support "apple-touch-icon" and |
| // "apple-touch-icon-precomposed". |
| if (base::LowerCaseEqualsASCII(rel, "icon") || |
| base::LowerCaseEqualsASCII(rel, "shortcut icon") || |
| base::LowerCaseEqualsASCII(rel, "apple-touch-icon") || |
| base::LowerCaseEqualsASCII(rel, "apple-touch-icon-precomposed")) { |
| AddInstallIcon(elem, &metadata->icons); |
| } |
| } else if (elem.HasHTMLTagName("meta") && elem.HasAttribute("name")) { |
| std::string name = elem.GetAttribute("name").Utf8(); |
| WebString content = elem.GetAttribute("content"); |
| if (name == "application-name") { |
| metadata->application_name = content.Utf16(); |
| } else if (name == "description") { |
| metadata->description = content.Utf16(); |
| } else if (name == "application-url") { |
| std::string url = content.Utf8(); |
| metadata->application_url = |
| document_url.is_valid() ? document_url.Resolve(url) : GURL(url); |
| if (!metadata->application_url.is_valid()) |
| metadata->application_url = GURL(); |
| } else if (name == "mobile-web-app-capable" && |
| base::LowerCaseEqualsASCII(content.Utf16(), "yes")) { |
| metadata->mobile_capable = mojom::WebPageMobileCapable::ENABLED; |
| } else if (name == "apple-mobile-web-app-capable" && |
| base::LowerCaseEqualsASCII(content.Utf16(), "yes") && |
| metadata->mobile_capable == |
| mojom::WebPageMobileCapable::UNSPECIFIED) { |
| metadata->mobile_capable = mojom::WebPageMobileCapable::ENABLED_APPLE; |
| } |
| } |
| } |
| |
| return metadata; |
| } |
| |
| } // namespace chrome |