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Diffstat (limited to 'chromium/content/renderer/savable_resources.cc')
| -rw-r--r-- | chromium/content/renderer/savable_resources.cc | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/chromium/content/renderer/savable_resources.cc b/chromium/content/renderer/savable_resources.cc deleted file mode 100644 index c6515bc5550..00000000000 --- a/chromium/content/renderer/savable_resources.cc +++ /dev/null @@ -1,173 +0,0 @@ -// Copyright (c) 2013 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 "content/renderer/savable_resources.h" - -#include <set> - -#include "base/compiler_specific.h" -#include "base/strings/string_util.h" -#include "content/public/common/url_utils.h" -#include "content/renderer/render_frame_impl.h" -#include "third_party/blink/public/platform/web_string.h" -#include "third_party/blink/public/platform/web_vector.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_element_collection.h" -#include "third_party/blink/public/web/web_input_element.h" -#include "third_party/blink/public/web/web_local_frame.h" -#include "third_party/blink/public/web/web_node.h" -#include "third_party/blink/public/web/web_view.h" - -using blink::WebDocument; -using blink::WebElement; -using blink::WebElementCollection; -using blink::WebFrame; -using blink::WebInputElement; -using blink::WebLocalFrame; -using blink::WebNode; -using blink::WebString; -using blink::WebVector; -using blink::WebView; - -namespace content { -namespace { - -// Returns |true| if |web_frame| contains (or should be assumed to contain) -// a html document. -bool DoesFrameContainHtmlDocument(WebFrame* web_frame, - const WebElement& element) { - if (web_frame->IsWebLocalFrame()) { - WebDocument doc = web_frame->ToWebLocalFrame()->GetDocument(); - return doc.IsHTMLDocument() || doc.IsXHTMLDocument(); - } - - // Cannot inspect contents of a remote frame, so we use a heuristic: - // Assume that <iframe> and <frame> elements contain a html document, - // and other elements (i.e. <object>) contain plugins or other resources. - // If the heuristic is wrong (i.e. the remote frame in <object> does - // contain an html document), then things will still work, but with the - // following caveats: 1) original frame content will be saved and 2) links - // in frame's html doc will not be rewritten to point to locally saved - // files. - return element.HasHTMLTagName("iframe") || element.HasHTMLTagName("frame"); -} - -// If present and valid, then push the link associated with |element| -// into either SavableResourcesResult::subframes or -// SavableResourcesResult::resources_list. -void GetSavableResourceLinkForElement( - const WebElement& element, - const WebDocument& current_doc, - SavableResourcesResult* result) { - // Get absolute URL. - WebString link_attribute_value = GetSubResourceLinkFromElement(element); - GURL element_url = current_doc.CompleteURL(link_attribute_value); - - // See whether to report this element as a subframe. - WebFrame* web_frame = WebFrame::FromFrameOwnerElement(element); - if (web_frame && DoesFrameContainHtmlDocument(web_frame, element)) { - SavableSubframe subframe; - subframe.original_url = element_url; - subframe.routing_id = RenderFrame::GetRoutingIdForWebFrame(web_frame); - result->subframes->push_back(subframe); - return; - } - - // Check whether the node has sub resource URL or not. - if (link_attribute_value.IsNull()) - return; - - // Ignore invalid URL. - if (!element_url.is_valid()) - return; - - // Ignore those URLs which are not standard protocols. Because FTP - // protocol does no have cache mechanism, we will skip all - // sub-resources if they use FTP protocol. - if (!element_url.SchemeIsHTTPOrHTTPS() && - !element_url.SchemeIs(url::kFileScheme)) - return; - - result->resources_list->push_back(element_url); -} - -} // namespace - -bool GetSavableResourceLinksForFrame(WebLocalFrame* current_frame, - SavableResourcesResult* result) { - // Get current frame's URL. - GURL current_frame_url = current_frame->GetDocument().Url(); - - // If url of current frame is invalid, ignore it. - if (!current_frame_url.is_valid()) - return false; - - // If url of current frame is not a savable protocol, ignore it. - if (!IsSavableURL(current_frame_url)) - return false; - - // Get current using document. - WebDocument current_doc = current_frame->GetDocument(); - // Go through all descent nodes. - WebElementCollection all = current_doc.All(); - // Go through all elements in this frame. - for (WebElement element = all.FirstItem(); !element.IsNull(); - element = all.NextItem()) { - GetSavableResourceLinkForElement(element, - current_doc, - result); - } - - return true; -} - -WebString GetSubResourceLinkFromElement(const WebElement& element) { - const char* attribute_name = nullptr; - if (element.HasHTMLTagName("img") || element.HasHTMLTagName("frame") || - element.HasHTMLTagName("iframe") || element.HasHTMLTagName("script")) { - attribute_name = "src"; - } else if (element.HasHTMLTagName("input")) { - const WebInputElement input = element.ToConst<WebInputElement>(); - if (input.IsImageButton()) { - attribute_name = "src"; - } - } else if (element.HasHTMLTagName("body") || - element.HasHTMLTagName("table") || element.HasHTMLTagName("tr") || - element.HasHTMLTagName("td")) { - attribute_name = "background"; - } else if (element.HasHTMLTagName("blockquote") || - element.HasHTMLTagName("q") || element.HasHTMLTagName("del") || - element.HasHTMLTagName("ins")) { - attribute_name = "cite"; - } else if (element.HasHTMLTagName("object")) { - attribute_name = "data"; - } else if (element.HasHTMLTagName("link")) { - // If the link element is not linked to css, ignore it. - WebString type = element.GetAttribute("type"); - WebString rel = element.GetAttribute("rel"); - if ((type.ContainsOnlyASCII() && - base::LowerCaseEqualsASCII(type.Ascii(), "text/css")) || - (rel.ContainsOnlyASCII() && - base::LowerCaseEqualsASCII(rel.Ascii(), "stylesheet"))) { - // TODO(jnd): Add support for extracting links of sub-resources which - // are inside style-sheet such as @import, url(), etc. - // See bug: http://b/issue?id=1111667. - attribute_name = "href"; - } - } - if (!attribute_name) - return WebString(); - WebString value = element.GetAttribute(WebString::FromUTF8(attribute_name)); - // If value has content and not start with "javascript:" then return it, - // otherwise return NULL. - if (!value.IsNull() && !value.IsEmpty() && - !base::StartsWith(value.Utf8(), - "javascript:", base::CompareCase::INSENSITIVE_ASCII)) - return value; - - return WebString(); -} - -} // namespace content |