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// Copyright 2016 The Chromium Authors
// 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/network_utils.h"
#include "base/metrics/histogram_functions.h"
#include "base/timer/elapsed_timer.h"
#include "net/base/data_url.h"
#include "net/base/ip_address.h"
#include "net/base/net_errors.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/base/url_util.h"
#include "net/http/http_response_headers.h"
#include "net/http/http_util.h"
#include "services/metrics/public/cpp/metrics_utils.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "third_party/blink/public/common/mime_util/mime_util.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_response.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/wtf/shared_buffer.h"
#include "third_party/blink/renderer/platform/wtf/text/string_utf8_adaptor.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "url/gurl.h"
namespace {
net::registry_controlled_domains::PrivateRegistryFilter
getNetPrivateRegistryFilter(
blink::network_utils::PrivateRegistryFilter filter) {
switch (filter) {
case blink::network_utils::kIncludePrivateRegistries:
return net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES;
case blink::network_utils::kExcludePrivateRegistries:
return net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES;
}
// There are only two network_utils::PrivateRegistryFilter enum entries, so
// we should never reach this point. However, we must have a default return
// value to avoid a compiler error.
NOTREACHED();
}
} // namespace
namespace blink {
namespace network_utils {
bool IsReservedIPAddress(const StringView& host) {
net::IPAddress address;
StringUTF8Adaptor utf8(host);
if (!net::ParseURLHostnameToAddress(utf8.AsStringView(), &address)) {
return false;
}
return !address.IsPubliclyRoutable();
}
String GetDomainAndRegistry(const StringView& host,
PrivateRegistryFilter filter) {
StringUTF8Adaptor host_utf8(host);
std::string domain = net::registry_controlled_domains::GetDomainAndRegistry(
host_utf8.AsStringView(), getNetPrivateRegistryFilter(filter));
return String(domain);
}
std::tuple<int, ResourceResponse, scoped_refptr<SharedBuffer>> ParseDataURL(
const KURL& url,
const String& method,
ukm::SourceId source_id,
ukm::UkmRecorder* recorder) {
base::ElapsedTimer timer;
std::string utf8_mime_type;
std::string utf8_charset;
std::string data_string;
scoped_refptr<net::HttpResponseHeaders> headers;
net::Error result =
net::DataURL::BuildResponse(GURL(url), method.Ascii(), &utf8_mime_type,
&utf8_charset, &data_string, &headers);
if (result != net::OK)
return std::make_tuple(result, ResourceResponse(), nullptr);
auto buffer = SharedBuffer::Create(data_string);
// The below code is the same as in
// `CreateResourceForTransparentPlaceholderImage()`.
ResourceResponse response;
response.SetHttpStatusCode(200);
response.SetHttpStatusText(AtomicString("OK"));
response.SetCurrentRequestUrl(url);
response.SetMimeType(WebString::FromUTF8(utf8_mime_type));
response.SetExpectedContentLength(buffer->size());
response.SetTextEncodingName(WebString::FromUTF8(utf8_charset));
size_t iter = 0;
std::string name;
std::string value;
while (headers->EnumerateHeaderLines(&iter, &name, &value)) {
response.AddHttpHeaderField(WebString::FromLatin1(name),
WebString::FromLatin1(value));
}
base::TimeDelta elapsed = timer.Elapsed();
base::UmaHistogramMicrosecondsTimes("Blink.Network.ParseDataURLTime",
elapsed);
size_t length = url.GetString().length();
base::UmaHistogramCounts10M("Blink.Network.DataUrlLength",
static_cast<int>(length));
if (length >= 0 && length < 1000) {
base::UmaHistogramMicrosecondsTimes(
"Blink.Network.ParseDataURLTime.Under1000Char", elapsed);
} else if (length >= 1000 && length < 100000) {
base::UmaHistogramMicrosecondsTimes(
"Blink.Network.ParseDataURLTime.Under100000Char", elapsed);
} else {
base::UmaHistogramMicrosecondsTimes(
"Blink.Network.ParseDataURLTime.Over100000Char", elapsed);
}
bool is_image = utf8_mime_type.starts_with("image/");
if (is_image) {
base::UmaHistogramCounts10M("Blink.Network.DataUrlLength.Image",
static_cast<int>(length));
base::UmaHistogramMicrosecondsTimes("Blink.Network.ParseDataURLTime.Image",
elapsed);
if (length >= 0 && length < 1000) {
base::UmaHistogramMicrosecondsTimes(
"Blink.Network.ParseDataURLTime.Image.Under1000Char", elapsed);
} else if (length >= 1000 && length < 100000) {
base::UmaHistogramMicrosecondsTimes(
"Blink.Network.ParseDataURLTime.Image.Under100000Char", elapsed);
} else {
base::UmaHistogramMicrosecondsTimes(
"Blink.Network.ParseDataURLTime.Image.Over100000Char", elapsed);
}
}
if (source_id != ukm::kInvalidSourceId && recorder) {
ukm::builders::Network_DataUrls builder(source_id);
builder.SetUrlLength(ukm::GetExponentialBucketMinForCounts1000(length));
builder.SetParseTime(elapsed.InMicroseconds());
builder.SetIsImage(is_image);
builder.Record(recorder);
}
return std::make_tuple(net::OK, std::move(response), std::move(buffer));
}
bool IsDataURLMimeTypeSupported(const KURL& url,
std::string* data,
std::string* mime_type) {
std::string utf8_mime_type;
std::string utf8_charset;
if (!net::DataURL::Parse(GURL(url), &utf8_mime_type, &utf8_charset, data))
return false;
if (!blink::IsSupportedMimeType(utf8_mime_type))
return false;
if (mime_type)
utf8_mime_type.swap(*mime_type);
return true;
}
bool IsRedirectResponseCode(int response_code) {
return net::HttpResponseHeaders::IsRedirectResponseCode(response_code);
}
bool IsCertificateTransparencyRequiredError(int error_code) {
return error_code == net::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED;
}
String GenerateAcceptLanguageHeader(const String& lang) {
return WebString::FromUTF8(
net::HttpUtil::GenerateAcceptLanguageHeader(lang.Utf8()));
}
String ExpandLanguageList(const String& lang) {
return WebString::FromUTF8(net::HttpUtil::ExpandLanguageList(lang.Utf8()));
}
Vector<char> ParseMultipartBoundary(const AtomicString& content_type_header) {
std::string utf8_string = content_type_header.Utf8();
std::string mime_type;
std::string charset;
bool had_charset = false;
std::string boundary;
net::HttpUtil::ParseContentType(utf8_string, &mime_type, &charset,
&had_charset, &boundary);
base::TrimString(boundary, " \"", &boundary);
Vector<char> result;
result.AppendSpan(base::span(boundary));
return result;
}
} // namespace network_utils
} // namespace blink
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