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// Copyright 2016 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 "third_party/blink/renderer/platform/network/mime/mime_type_registry.h"
#include "base/files/file_path.h"
#include "base/strings/string_util.h"
#include "media/base/mime_util.h"
#include "media/filters/stream_parser_factory.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/base/mime_util.h"
#include "third_party/blink/public/common/mime_util/mime_util.h"
#include "third_party/blink/public/mojom/mime/mime_registry.mojom-blink.h"
#include "third_party/blink/public/platform/file_path_conversion.h"
#include "third_party/blink/public/platform/interface_provider.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
namespace {
struct MimeRegistryPtrHolder {
public:
MimeRegistryPtrHolder() {
Platform::Current()->GetInterfaceProvider()->GetInterface(
mime_registry.BindNewPipeAndPassReceiver());
}
~MimeRegistryPtrHolder() = default;
mojo::Remote<mojom::blink::MimeRegistry> mime_registry;
};
std::string ToASCIIOrEmpty(const WebString& string) {
return string.ContainsOnlyASCII() ? string.Ascii() : std::string();
}
template <typename CHARTYPE, typename SIZETYPE>
std::string ToLowerASCIIInternal(CHARTYPE* str, SIZETYPE length) {
std::string lower_ascii;
lower_ascii.reserve(length);
for (CHARTYPE* p = str; p < str + length; p++)
lower_ascii.push_back(base::ToLowerASCII(static_cast<char>(*p)));
return lower_ascii;
}
// Does the same as ToASCIIOrEmpty, but also makes the chars lower.
std::string ToLowerASCIIOrEmpty(const String& str) {
if (str.IsEmpty() || !str.ContainsOnlyASCIIOrEmpty())
return std::string();
if (str.Is8Bit())
return ToLowerASCIIInternal(str.Characters8(), str.length());
return ToLowerASCIIInternal(str.Characters16(), str.length());
}
STATIC_ASSERT_ENUM(MIMETypeRegistry::kIsNotSupported, media::IsNotSupported);
STATIC_ASSERT_ENUM(MIMETypeRegistry::kIsSupported, media::IsSupported);
STATIC_ASSERT_ENUM(MIMETypeRegistry::kMayBeSupported, media::MayBeSupported);
} // namespace
String MIMETypeRegistry::GetMIMETypeForExtension(const String& ext) {
// The sandbox restricts our access to the registry, so we need to proxy
// these calls over to the browser process.
DEFINE_STATIC_LOCAL(MimeRegistryPtrHolder, registry_holder, ());
String mime_type;
if (!registry_holder.mime_registry->GetMimeTypeFromExtension(
ext.IsNull() ? "" : ext, &mime_type)) {
return String();
}
return mime_type;
}
String MIMETypeRegistry::GetWellKnownMIMETypeForExtension(const String& ext) {
// This method must be thread safe and should not consult the OS/registry.
std::string mime_type;
net::GetWellKnownMimeTypeFromExtension(WebStringToFilePath(ext).value(),
&mime_type);
return String::FromUTF8(mime_type.data(), mime_type.length());
}
bool MIMETypeRegistry::IsSupportedMIMEType(const String& mime_type) {
return blink::IsSupportedMimeType(ToLowerASCIIOrEmpty(mime_type));
}
bool MIMETypeRegistry::IsSupportedImageMIMEType(const String& mime_type) {
return blink::IsSupportedImageMimeType(ToLowerASCIIOrEmpty(mime_type));
}
bool MIMETypeRegistry::IsSupportedImageResourceMIMEType(
const String& mime_type) {
return IsSupportedImageMIMEType(mime_type);
}
bool MIMETypeRegistry::IsSupportedImagePrefixedMIMEType(
const String& mime_type) {
std::string ascii_mime_type = ToLowerASCIIOrEmpty(mime_type);
return (blink::IsSupportedImageMimeType(ascii_mime_type) ||
(base::StartsWith(ascii_mime_type, "image/",
base::CompareCase::SENSITIVE) &&
blink::IsSupportedNonImageMimeType(ascii_mime_type)));
}
bool MIMETypeRegistry::IsSupportedImageMIMETypeForEncoding(
const String& mime_type) {
return (EqualIgnoringASCIICase(mime_type, "image/jpeg") ||
EqualIgnoringASCIICase(mime_type, "image/png") ||
EqualIgnoringASCIICase(mime_type, "image/webp"));
}
bool MIMETypeRegistry::IsSupportedJavaScriptMIMEType(const String& mime_type) {
return blink::IsSupportedJavascriptMimeType(ToLowerASCIIOrEmpty(mime_type));
}
bool MIMETypeRegistry::IsJSONMimeType(const String& mime_type) {
return blink::IsJSONMimeType(ToLowerASCIIOrEmpty(mime_type));
}
bool MIMETypeRegistry::IsLegacySupportedJavaScriptLanguage(
const String& language) {
// Mozilla 1.8 accepts javascript1.0 - javascript1.7, but WinIE 7 accepts only
// javascript1.1 - javascript1.3.
// Mozilla 1.8 and WinIE 7 both accept javascript and livescript.
// WinIE 7 accepts ecmascript and jscript, but Mozilla 1.8 doesn't.
// Neither Mozilla 1.8 nor WinIE 7 accept leading or trailing whitespace.
// We want to accept all the values that either of these browsers accept, but
// not other values.
// FIXME: This function is not HTML5 compliant. These belong in the MIME
// registry as "text/javascript<version>" entries.
return EqualIgnoringASCIICase(language, "javascript") ||
EqualIgnoringASCIICase(language, "javascript1.0") ||
EqualIgnoringASCIICase(language, "javascript1.1") ||
EqualIgnoringASCIICase(language, "javascript1.2") ||
EqualIgnoringASCIICase(language, "javascript1.3") ||
EqualIgnoringASCIICase(language, "javascript1.4") ||
EqualIgnoringASCIICase(language, "javascript1.5") ||
EqualIgnoringASCIICase(language, "javascript1.6") ||
EqualIgnoringASCIICase(language, "javascript1.7") ||
EqualIgnoringASCIICase(language, "livescript") ||
EqualIgnoringASCIICase(language, "ecmascript") ||
EqualIgnoringASCIICase(language, "jscript");
}
bool MIMETypeRegistry::IsSupportedNonImageMIMEType(const String& mime_type) {
return blink::IsSupportedNonImageMimeType(ToLowerASCIIOrEmpty(mime_type));
}
bool MIMETypeRegistry::IsSupportedMediaMIMEType(const String& mime_type,
const String& codecs) {
return SupportsMediaMIMEType(mime_type, codecs) != kIsNotSupported;
}
MIMETypeRegistry::SupportsType MIMETypeRegistry::SupportsMediaMIMEType(
const String& mime_type,
const String& codecs) {
const std::string ascii_mime_type = ToLowerASCIIOrEmpty(mime_type);
std::vector<std::string> codec_vector;
media::SplitCodecs(ToASCIIOrEmpty(codecs), &codec_vector);
return static_cast<SupportsType>(
media::IsSupportedMediaFormat(ascii_mime_type, codec_vector));
}
MIMETypeRegistry::SupportsType MIMETypeRegistry::SupportsMediaSourceMIMEType(
const String& mime_type,
const String& codecs) {
const std::string ascii_mime_type = ToLowerASCIIOrEmpty(mime_type);
if (ascii_mime_type.empty())
return kIsNotSupported;
std::vector<std::string> parsed_codec_ids;
media::SplitCodecs(ToASCIIOrEmpty(codecs), &parsed_codec_ids);
return static_cast<SupportsType>(media::StreamParserFactory::IsTypeSupported(
ascii_mime_type, parsed_codec_ids));
}
bool MIMETypeRegistry::IsJavaAppletMIMEType(const String& mime_type) {
// Since this set is very limited and is likely to remain so we won't bother
// with the overhead of using a hash set. Any of the MIME types below may be
// followed by any number of specific versions of the JVM, which is why we use
// startsWith()
return mime_type.StartsWithIgnoringASCIICase("application/x-java-applet") ||
mime_type.StartsWithIgnoringASCIICase("application/x-java-bean") ||
mime_type.StartsWithIgnoringASCIICase("application/x-java-vm");
}
bool MIMETypeRegistry::IsSupportedStyleSheetMIMEType(const String& mime_type) {
return EqualIgnoringASCIICase(mime_type, "text/css");
}
bool MIMETypeRegistry::IsSupportedFontMIMEType(const String& mime_type) {
static const unsigned kFontLen = 5;
if (!mime_type.StartsWithIgnoringASCIICase("font/"))
return false;
String sub_type = mime_type.Substring(kFontLen).DeprecatedLower();
return sub_type == "woff" || sub_type == "woff2" || sub_type == "otf" ||
sub_type == "ttf" || sub_type == "sfnt";
}
bool MIMETypeRegistry::IsSupportedTextTrackMIMEType(const String& mime_type) {
return EqualIgnoringASCIICase(mime_type, "text/vtt");
}
bool MIMETypeRegistry::IsLossyImageMIMEType(const String& mime_type) {
return EqualIgnoringASCIICase(mime_type, "image/jpeg") ||
EqualIgnoringASCIICase(mime_type, "image/jpg") ||
EqualIgnoringASCIICase(mime_type, "image/pjpeg");
}
bool MIMETypeRegistry::IsLosslessImageMIMEType(const String& mime_type) {
return EqualIgnoringASCIICase(mime_type, "image/bmp") ||
EqualIgnoringASCIICase(mime_type, "image/gif") ||
EqualIgnoringASCIICase(mime_type, "image/png") ||
EqualIgnoringASCIICase(mime_type, "image/webp") ||
EqualIgnoringASCIICase(mime_type, "image/x-xbitmap") ||
EqualIgnoringASCIICase(mime_type, "image/x-png");
}
} // namespace blink
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