Remember user's decisions on SSL errors.

android_webview/browser/aw_ssl_host_state_delegate.cc

+// Copyright (c) 2014 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 "android_webview/browser/aw_ssl_host_state_delegate.h"
+
+#include "net/base/hash_value.h"
+
+using content::SSLHostStateDelegate;
+
+namespace android_webview {
+
+namespace internal {
+net::SHA256HashValue getChainFingerprint256(const net::X509Certificate& cert) {
+  net::SHA256HashValue fingerprint =
+      net::X509Certificate::CalculateChainFingerprint256(
+          cert.os_cert_handle(), cert.GetIntermediateCertificates());
+  return fingerprint;
+}
+
+CertPolicy::CertPolicy() {
+}
+CertPolicy::~CertPolicy() {
+}
+
+// For an allowance, we consider a given |cert| to be a match to a saved
+// allowed cert if the |error| is an exact match to or subset of the errors
+// in the saved CertStatus.
+bool CertPolicy::Check(const net::X509Certificate& cert,
+                       net::CertStatus error) const {
+  net::SHA256HashValue fingerprint = getChainFingerprint256(cert);
+  std::map<net::SHA256HashValue, net::CertStatus,
+           net::SHA256HashValueLessThan>::const_iterator allowed_iter =
+      allowed_.find(fingerprint);
+  if ((allowed_iter != allowed_.end()) && (allowed_iter->second & error) &&
+      ((allowed_iter->second & error) == error)) {
+    return true;
+  }
+  return false;
+}
+
+void CertPolicy::Allow(const net::X509Certificate& cert,
+                       net::CertStatus error) {
+  // If this same cert had already been saved with a different error status,
+  // this will replace it with the new error status.
+  net::SHA256HashValue fingerprint = getChainFingerprint256(cert);
+  allowed_[fingerprint] = error;
+}
+
+}  // namespace internal
+
+AwSSLHostStateDelegate::AwSSLHostStateDelegate() {
+}
+
+AwSSLHostStateDelegate::~AwSSLHostStateDelegate() {
+}
+
+void AwSSLHostStateDelegate::HostRanInsecureContent(const std::string& host,
+                                                    int pid) {
+  // Intentional no-op for Android WebView.
+}
+
+bool AwSSLHostStateDelegate::DidHostRunInsecureContent(const std::string& host,
+                                                       int pid) const {
+  // Intentional no-op for Android WebView.
+  return false;
+}
+
+void AwSSLHostStateDelegate::AllowCert(const std::string& host,
+                                       const net::X509Certificate& cert,
+                                       net::CertStatus error) {
+  cert_policy_for_host_[host].Allow(cert, error);
+}
+
+void AwSSLHostStateDelegate::Clear() {
+  cert_policy_for_host_.clear();
+}
+
+SSLHostStateDelegate::CertJudgment AwSSLHostStateDelegate::QueryPolicy(
+    const std::string& host,
+    const net::X509Certificate& cert,
+    net::CertStatus error,
+    bool* expired_previous_decision) {
+  return cert_policy_for_host_[host].Check(cert, error)
+             ? SSLHostStateDelegate::ALLOWED
+             : SSLHostStateDelegate::DENIED;
+}
+
+}  // namespace android_webview