StylePropertySet* ElementAttributeData::ensureInlineStyle(StyledElement* element)
{
ASSERT(isMutable());
if (!m_inlineStyleDecl) {
ASSERT(element->isStyledElement());
m_inlineStyleDecl = StylePropertySet::create(strictToCSSParserMode(element->isHTMLElement() && !element->document()->inQuirksMode()));
}
return m_inlineStyleDecl.get();
}
MutableStyleProperties& StyledElement::ensureMutableInlineStyle()
{
RefPtr<StyleProperties>& inlineStyle = ensureUniqueElementData().m_inlineStyle;
if (!inlineStyle)
inlineStyle = MutableStyleProperties::create(strictToCSSParserMode(isHTMLElement() && !document().inQuirksMode()));
else if (!is<MutableStyleProperties>(*inlineStyle))
inlineStyle = inlineStyle->mutableCopy();
return downcast<MutableStyleProperties>(*inlineStyle);
}
void HTMLLinkElement::setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet)
{
if (!inDocument()) {
ASSERT(!m_sheet);
return;
}
m_sheet = CSSStyleSheet::create(this, href, baseURL, charset);
bool strictParsing = !document()->inQuirksMode();
bool enforceMIMEType = strictParsing;
bool crossOriginCSS = false;
bool validMIMEType = false;
bool needsSiteSpecificQuirks = document()->page() && document()->page()->settings()->needsSiteSpecificQuirks();
// Check to see if we should enforce the MIME type of the CSS resource in strict mode.
// Running in iWeb 2 is one example of where we don't want to - <rdar://problem/6099748>
if (enforceMIMEType && document()->page() && !document()->page()->settings()->enforceCSSMIMETypeInNoQuirksMode())
enforceMIMEType = false;
#ifdef BUILDING_ON_LEOPARD
if (enforceMIMEType && needsSiteSpecificQuirks) {
// Covers both http and https, with or without "www."
if (baseURL.string().contains("mcafee.com/japan/", false))
enforceMIMEType = false;
}
#endif
String sheetText = sheet->sheetText(enforceMIMEType, &validMIMEType);
m_sheet->parseString(sheetText, strictToCSSParserMode(strictParsing));
// If we're loading a stylesheet cross-origin, and the MIME type is not
// standard, require the CSS to at least start with a syntactically
// valid CSS rule.
// This prevents an attacker playing games by injecting CSS strings into
// HTML, XML, JSON, etc. etc.
if (!document()->securityOrigin()->canRequest(baseURL))
crossOriginCSS = true;
if (crossOriginCSS && !validMIMEType && !m_sheet->hasSyntacticallyValidCSSHeader())
m_sheet = CSSStyleSheet::create(this, href, baseURL, charset);
if (strictParsing && needsSiteSpecificQuirks) {
// Work around <https://bugs.webkit.org/show_bug.cgi?id=28350>.
DEFINE_STATIC_LOCAL(const String, slashKHTMLFixesDotCss, ("/KHTMLFixes.css"));
DEFINE_STATIC_LOCAL(const String, mediaWikiKHTMLFixesStyleSheet, ("/* KHTML fix stylesheet */\n/* work around the horizontal scrollbars */\n#column-content { margin-left: 0; }\n\n"));
// There are two variants of KHTMLFixes.css. One is equal to mediaWikiKHTMLFixesStyleSheet,
// while the other lacks the second trailing newline.
if (baseURL.string().endsWith(slashKHTMLFixesDotCss) && !sheetText.isNull() && mediaWikiKHTMLFixesStyleSheet.startsWith(sheetText)
&& sheetText.length() >= mediaWikiKHTMLFixesStyleSheet.length() - 1) {
ASSERT(m_sheet->length() == 1);
ExceptionCode ec;
m_sheet->deleteRule(0, ec);
}
}
void ElementAttributeData::updateInlineStyleAvoidingMutation(StyledElement* element, const String& text)
{
// We reconstruct the property set instead of mutating if there is no CSSOM wrapper.
// This makes wrapperless property sets immutable and so cacheable.
if (m_inlineStyleDecl && !m_inlineStyleDecl->isMutable())
m_inlineStyleDecl.clear();
if (!m_inlineStyleDecl) {
m_inlineStyleDecl = StylePropertySet::create();
m_inlineStyleDecl->setCSSParserMode(strictToCSSParserMode(element->isHTMLElement() && !element->document()->inQuirksMode()));
}
m_inlineStyleDecl->parseDeclaration(text, element->document()->elementSheet()->internal());
}
Ref<ImmutableStyleProperties> CSSParser::parseInlineStyleDeclaration(const String& string, Element* element)
{
CSSParserContext context(element->document());
context.mode = strictToCSSParserMode(element->isHTMLElement() && !element->document().inQuirksMode());
return CSSParserImpl::parseInlineStyleDeclaration(string, element);
}
