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// Copyright (c) 2017 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 "components/safe_browsing/base_ping_manager.h"
#include <utility>
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "components/data_use_measurement/core/data_use_user_data.h"
#include "content/public/browser/browser_thread.h"
#include "google_apis/google_api_keys.h"
#include "net/base/escape.h"
#include "net/base/load_flags.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_status.h"
#include "services/network/public/cpp/simple_url_loader.h"
#include "url/gurl.h"
using content::BrowserThread;
namespace {
net::NetworkTrafficAnnotationTag kTrafficAnnotation =
net::DefineNetworkTrafficAnnotation("safe_browsing_extended_reporting",
R"(
semantics {
sender: "Safe Browsing Extended Reporting"
description:
"When a user is opted in to automatically reporting 'possible "
"security incidents to Google,' and they reach a bad page that's "
"flagged by Safe Browsing, Chrome will send a report to Google "
"with information about the threat. This helps Safe Browsing learn "
"where threats originate and thus protect more users."
trigger:
"When a red interstitial is shown, and the user is opted-in."
data:
"The report includes the URL and referrer chain of the page. If the "
"warning is triggered by a subresource on a partially loaded page, "
"the report will include the URL and referrer chain of sub frames "
"and resources loaded into the page. It may also include a subset "
"of headers for resources loaded, and some Google ad identifiers to "
"help block malicious ads."
destination: GOOGLE_OWNED_SERVICE
}
policy {
cookies_allowed: YES
cookies_store: "Safe Browsing Cookie Store"
setting:
"Users can control this feature via the 'Automatically report "
"details of possible security incidents to Google' setting under "
"'Privacy'. The feature is disabled by default."
chrome_policy {
SafeBrowsingExtendedReportingOptInAllowed {
policy_options {mode: MANDATORY}
SafeBrowsingExtendedReportingOptInAllowed: false
}
}
})");
} // namespace
namespace safe_browsing {
// SafeBrowsingPingManager implementation ----------------------------------
// static
std::unique_ptr<BasePingManager> BasePingManager::Create(
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
const SafeBrowsingProtocolConfig& config) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
return base::WrapUnique(new BasePingManager(url_loader_factory, config));
}
BasePingManager::BasePingManager(
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
const SafeBrowsingProtocolConfig& config)
: client_name_(config.client_name),
url_loader_factory_(url_loader_factory),
url_prefix_(config.url_prefix) {
DCHECK(!url_prefix_.empty());
version_ = ProtocolManagerHelper::Version();
}
BasePingManager::~BasePingManager() {}
// net::URLFetcherDelegate implementation ----------------------------------
// All SafeBrowsing request responses are handled here.
void BasePingManager::OnURLLoaderComplete(
network::SimpleURLLoader* source,
std::unique_ptr<std::string> response_body) {
auto it = std::find_if(
safebrowsing_reports_.begin(), safebrowsing_reports_.end(),
[source](const std::unique_ptr<network::SimpleURLLoader>& ptr) {
return ptr.get() == source;
});
DCHECK(it != safebrowsing_reports_.end());
safebrowsing_reports_.erase(it);
}
// Sends a SafeBrowsing "hit" report.
void BasePingManager::ReportSafeBrowsingHit(
const safe_browsing::HitReport& hit_report) {
auto resource_request = std::make_unique<network::ResourceRequest>();
GURL report_url = SafeBrowsingHitUrl(hit_report);
resource_request->url = report_url;
resource_request->load_flags = net::LOAD_DISABLE_CACHE;
if (!hit_report.post_data.empty())
resource_request->method = "POST";
auto report_ptr = network::SimpleURLLoader::Create(
std::move(resource_request), kTrafficAnnotation);
if (!hit_report.post_data.empty())
report_ptr->AttachStringForUpload(hit_report.post_data, "text/plain");
report_ptr->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
url_loader_factory_.get(),
base::BindOnce(&BasePingManager::OnURLLoaderComplete,
base::Unretained(this), report_ptr.get()));
safebrowsing_reports_.insert(std::move(report_ptr));
}
// Sends threat details for users who opt-in.
void BasePingManager::ReportThreatDetails(const std::string& report) {
GURL report_url = ThreatDetailsUrl();
auto resource_request = std::make_unique<network::ResourceRequest>();
resource_request->url = report_url;
resource_request->load_flags = net::LOAD_DISABLE_CACHE;
resource_request->method = "POST";
auto loader = network::SimpleURLLoader::Create(std::move(resource_request),
kTrafficAnnotation);
loader->AttachStringForUpload(report, "application/octet-stream");
loader->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
url_loader_factory_.get(),
base::BindOnce(&BasePingManager::OnURLLoaderComplete,
base::Unretained(this), loader.get()));
safebrowsing_reports_.insert(std::move(loader));
}
GURL BasePingManager::SafeBrowsingHitUrl(
const safe_browsing::HitReport& hit_report) const {
DCHECK(hit_report.threat_type == SB_THREAT_TYPE_URL_MALWARE ||
hit_report.threat_type == SB_THREAT_TYPE_URL_PHISHING ||
hit_report.threat_type == SB_THREAT_TYPE_URL_UNWANTED ||
hit_report.threat_type == SB_THREAT_TYPE_URL_BINARY_MALWARE ||
hit_report.threat_type == SB_THREAT_TYPE_URL_CLIENT_SIDE_PHISHING ||
hit_report.threat_type == SB_THREAT_TYPE_URL_CLIENT_SIDE_MALWARE);
std::string url = ProtocolManagerHelper::ComposeUrl(
url_prefix_, "report", client_name_, version_, std::string(),
hit_report.extended_reporting_level);
std::string threat_list = "none";
switch (hit_report.threat_type) {
case SB_THREAT_TYPE_URL_MALWARE:
threat_list = "malblhit";
break;
case SB_THREAT_TYPE_URL_PHISHING:
threat_list = "phishblhit";
break;
case SB_THREAT_TYPE_URL_UNWANTED:
threat_list = "uwsblhit";
break;
case SB_THREAT_TYPE_URL_BINARY_MALWARE:
threat_list = "binurlhit";
break;
case SB_THREAT_TYPE_URL_CLIENT_SIDE_PHISHING:
threat_list = "phishcsdhit";
break;
case SB_THREAT_TYPE_URL_CLIENT_SIDE_MALWARE:
threat_list = "malcsdhit";
break;
default:
NOTREACHED();
}
std::string threat_source = "none";
switch (hit_report.threat_source) {
case safe_browsing::ThreatSource::DATA_SAVER:
threat_source = "ds";
break;
case safe_browsing::ThreatSource::REMOTE:
threat_source = "rem";
break;
case safe_browsing::ThreatSource::LOCAL_PVER3:
threat_source = "l3";
break;
case safe_browsing::ThreatSource::LOCAL_PVER4:
threat_source = "l4";
break;
case safe_browsing::ThreatSource::CLIENT_SIDE_DETECTION:
threat_source = "csd";
break;
case safe_browsing::ThreatSource::PASSWORD_PROTECTION_SERVICE:
threat_source = "pps";
break;
case safe_browsing::ThreatSource::UNKNOWN:
NOTREACHED();
}
// Add user_population component only if it's not empty.
std::string user_population_comp;
if (!hit_report.population_id.empty()) {
// Population_id should be URL-safe, but escape it and size-limit it
// anyway since it came from outside Chrome.
std::string up_str =
net::EscapeQueryParamValue(hit_report.population_id, true);
if (up_str.size() > 512) {
DCHECK(false) << "population_id is too long: " << up_str;
up_str = "UP_STRING_TOO_LONG";
}
user_population_comp = "&up=" + up_str;
}
return GURL(base::StringPrintf(
"%s&evts=%s&evtd=%s&evtr=%s&evhr=%s&evtb=%d&src=%s&m=%d%s", url.c_str(),
threat_list.c_str(),
net::EscapeQueryParamValue(hit_report.malicious_url.spec(), true).c_str(),
net::EscapeQueryParamValue(hit_report.page_url.spec(), true).c_str(),
net::EscapeQueryParamValue(hit_report.referrer_url.spec(), true).c_str(),
hit_report.is_subresource, threat_source.c_str(),
hit_report.is_metrics_reporting_active, user_population_comp.c_str()));
}
GURL BasePingManager::ThreatDetailsUrl() const {
std::string url = base::StringPrintf(
"%s/clientreport/malware?client=%s&appver=%s&pver=1.0",
url_prefix_.c_str(), client_name_.c_str(), version_.c_str());
std::string api_key = google_apis::GetAPIKey();
if (!api_key.empty()) {
base::StringAppendF(&url, "&key=%s",
net::EscapeQueryParamValue(api_key, true).c_str());
}
return GURL(url);
}
} // namespace safe_browsing
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