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// Copyright 2019 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 "chrome/browser/devtools/protocol/security_handler.h"
#include <string>
#include <vector>
#include "base/base64.h"
#include "chrome/browser/ssl/security_state_tab_helper.h"
#include "components/security_state/content/content_utils.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/origin_util.h"
#include "net/cert/x509_certificate.h"
#include "net/cert/x509_util.h"
#include "net/ssl/ssl_cipher_suite_names.h"
#include "net/ssl/ssl_connection_status_flags.h"
#include "third_party/boringssl/src/include/openssl/ssl.h"
namespace {
const char kInsecureOriginSecurityStateIssueId[] = "insecure-origin";
const char kSchemeIsNotCryptographicSecurityStateIssueId[] =
"scheme-is-not-cryptographic";
const char kMalicousContentSecurityStateIssueId[] = "malicious-content";
const char kDisplayedMixedContentSecurityStateIssueId[] =
"displayed-mixed-content";
const char kContainedMixedFormSecurityStateIssueId[] = "contained-mixed-form";
const char kRanMixedContentSecurityStateIssueId[] = "ran-mixed-content";
const char kDisplayedContentWithCertErrorsSecurityStateIssueId[] =
"displayed-content-with-cert-errors";
const char kRanContentWithCertErrorSecurityStateIssueId[] =
"ran-content-with-cert-error";
const char kPkpBypassedSecurityStateIssueId[] = "pkp-bypassed";
const char kIsErrorPageSecurityStateIssueId[] = "is-error-page";
const char kInsecureInputEventsSecurityStateIssueId[] = "insecure-input-events";
std::string SecurityLevelToProtocolSecurityState(
security_state::SecurityLevel security_level) {
switch (security_level) {
case security_state::NONE:
case security_state::WARNING:
return protocol::Security::SecurityStateEnum::Neutral;
case security_state::SECURE_WITH_POLICY_INSTALLED_CERT:
case security_state::EV_SECURE:
case security_state::SECURE:
return protocol::Security::SecurityStateEnum::Secure;
case security_state::DANGEROUS:
return protocol::Security::SecurityStateEnum::Insecure;
case security_state::SECURITY_LEVEL_COUNT:
NOTREACHED();
return protocol::Security::SecurityStateEnum::Neutral;
}
NOTREACHED();
return protocol::Security::SecurityStateEnum::Neutral;
}
std::unique_ptr<protocol::Security::CertificateSecurityState>
CreateCertificateSecurityState(
const security_state::VisibleSecurityState& state) {
auto certificate = std::make_unique<protocol::Array<protocol::String>>();
if (state.certificate) {
certificate->emplace_back();
base::Base64Encode(net::x509_util::CryptoBufferAsStringPiece(
state.certificate->cert_buffer()),
&certificate->back());
for (const auto& cert : state.certificate->intermediate_buffers()) {
certificate->emplace_back();
base::Base64Encode(net::x509_util::CryptoBufferAsStringPiece(cert.get()),
&certificate->back());
}
}
int ssl_version = net::SSLConnectionStatusToVersion(state.connection_status);
const char* protocol;
net::SSLVersionToString(&protocol, ssl_version);
const char* key_exchange_str;
const char* cipher;
const char* mac;
bool is_aead;
bool is_tls13;
uint16_t cipher_suite =
net::SSLConnectionStatusToCipherSuite(state.connection_status);
net::SSLCipherSuiteToStrings(&key_exchange_str, &cipher, &mac, &is_aead,
&is_tls13, cipher_suite);
std::string key_exchange;
if (key_exchange_str)
key_exchange = key_exchange_str;
const char* key_exchange_group = SSL_get_curve_name(state.key_exchange_group);
std::string subject_name;
std::string issuer_name;
double valid_from = 0.0;
double valid_to = 0.0;
if (state.certificate) {
subject_name = state.certificate->subject().common_name;
issuer_name = state.certificate->issuer().common_name;
valid_from = state.certificate->valid_start().ToDoubleT();
valid_to = state.certificate->valid_expiry().ToDoubleT();
}
bool certificate_has_weak_signature =
(state.cert_status & net::CERT_STATUS_WEAK_SIGNATURE_ALGORITHM);
int status = net::ObsoleteSSLStatus(state.connection_status,
state.peer_signature_algorithm);
bool modern_ssl = status == net::OBSOLETE_SSL_NONE;
bool obsolete_ssl_protocol = status & net::OBSOLETE_SSL_MASK_PROTOCOL;
bool obsolete_ssl_key_exchange = status & net::OBSOLETE_SSL_MASK_KEY_EXCHANGE;
bool obsolete_ssl_cipher = status & net::OBSOLETE_SSL_MASK_CIPHER;
bool obsolete_ssl_signature = status & net::OBSOLETE_SSL_MASK_SIGNATURE;
auto certificate_security_state =
protocol::Security::CertificateSecurityState::Create()
.SetProtocol(protocol)
.SetKeyExchange(key_exchange)
.SetCipher(cipher)
.SetCertificate(std::move(certificate))
.SetSubjectName(subject_name)
.SetIssuer(issuer_name)
.SetValidFrom(valid_from)
.SetValidTo(valid_to)
.SetCertifcateHasWeakSignature(certificate_has_weak_signature)
.SetModernSSL(modern_ssl)
.SetObsoleteSslProtocol(obsolete_ssl_protocol)
.SetObsoleteSslKeyExchange(obsolete_ssl_key_exchange)
.SetObsoleteSslCipher(obsolete_ssl_cipher)
.SetObsoleteSslSignature(obsolete_ssl_signature)
.Build();
if (key_exchange_group)
certificate_security_state->SetKeyExchangeGroup(key_exchange_group);
if (mac)
certificate_security_state->SetMac(mac);
return certificate_security_state;
}
std::unique_ptr<protocol::Security::VisibleSecurityState>
CreateVisibleSecurityState(const security_state::VisibleSecurityState& state,
content::WebContents* web_contents) {
SecurityStateTabHelper* helper =
SecurityStateTabHelper::FromWebContents(web_contents);
DCHECK(helper);
std::string security_state =
SecurityLevelToProtocolSecurityState(helper->GetSecurityLevel());
bool scheme_is_cryptographic =
security_state::IsSchemeCryptographic(state.url);
bool malicious_content = state.malicious_content_status !=
security_state::MALICIOUS_CONTENT_STATUS_NONE;
bool insecure_input_events =
state.insecure_input_events.insecure_field_edited;
bool secure_origin = scheme_is_cryptographic;
if (!scheme_is_cryptographic)
secure_origin = content::IsOriginSecure(state.url);
std::vector<std::string> security_state_issue_ids;
if (!secure_origin)
security_state_issue_ids.push_back(kInsecureOriginSecurityStateIssueId);
if (!scheme_is_cryptographic)
security_state_issue_ids.push_back(
kSchemeIsNotCryptographicSecurityStateIssueId);
if (malicious_content)
security_state_issue_ids.push_back(kMalicousContentSecurityStateIssueId);
if (state.displayed_mixed_content)
security_state_issue_ids.push_back(
kDisplayedMixedContentSecurityStateIssueId);
if (state.contained_mixed_form)
security_state_issue_ids.push_back(kContainedMixedFormSecurityStateIssueId);
if (state.ran_mixed_content)
security_state_issue_ids.push_back(kRanMixedContentSecurityStateIssueId);
if (state.displayed_content_with_cert_errors)
security_state_issue_ids.push_back(
kDisplayedContentWithCertErrorsSecurityStateIssueId);
if (state.ran_content_with_cert_errors)
security_state_issue_ids.push_back(
kRanContentWithCertErrorSecurityStateIssueId);
if (state.pkp_bypassed)
security_state_issue_ids.push_back(kPkpBypassedSecurityStateIssueId);
if (state.is_error_page)
security_state_issue_ids.push_back(kIsErrorPageSecurityStateIssueId);
if (insecure_input_events)
security_state_issue_ids.push_back(
kInsecureInputEventsSecurityStateIssueId);
auto visible_security_state =
protocol::Security::VisibleSecurityState::Create()
.SetSecurityState(security_state)
.SetSecurityStateIssueIds(
std::make_unique<protocol::Array<std::string>>(
security_state_issue_ids))
.Build();
if (state.connection_status != 0) {
auto certificate_security_state = CreateCertificateSecurityState(state);
visible_security_state->SetCertificateSecurityState(
std::move(certificate_security_state));
}
return visible_security_state;
}
} // namespace
SecurityHandler::SecurityHandler(content::WebContents* web_contents,
protocol::UberDispatcher* dispatcher)
: content::WebContentsObserver(web_contents) {
DCHECK(web_contents);
frontend_ =
std::make_unique<protocol::Security::Frontend>(dispatcher->channel());
protocol::Security::Dispatcher::wire(dispatcher, this);
}
SecurityHandler::~SecurityHandler() {}
protocol::Response SecurityHandler::Enable() {
if (enabled_)
return protocol::Response::FallThrough();
enabled_ = true;
DidChangeVisibleSecurityState();
// Do not mark the command as handled. Let it fall through instead, so that
// the handler in content gets a chance to process the command.
return protocol::Response::FallThrough();
}
protocol::Response SecurityHandler::Disable() {
enabled_ = false;
// Do not mark the command as handled. Let it fall through instead, so that
// the handler in content gets a chance to process the command.
return protocol::Response::FallThrough();
}
void SecurityHandler::DidChangeVisibleSecurityState() {
if (!enabled_)
return;
auto state = security_state::GetVisibleSecurityState(web_contents());
auto visible_security_state =
CreateVisibleSecurityState(*state.get(), web_contents());
frontend_->VisibleSecurityStateChanged(std::move(visible_security_state));
}
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