Refactor SecurityStateModel/Clients for simplicity and reusability.

components/security_state/security_state_model.h

-// Copyright 2015 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.
-
-#ifndef COMPONENTS_SECURITY_STATE_SECURITY_STATE_MODEL_H_
-#define COMPONENTS_SECURITY_STATE_SECURITY_STATE_MODEL_H_
-
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "net/cert/cert_status_flags.h"
-#include "net/cert/sct_status_flags.h"
-#include "net/cert/x509_certificate.h"
-#include "url/gurl.h"
-
-namespace security_state {
-
-class SecurityStateModelClient;
-
-// SecurityStateModel provides high-level security information about a
-// page or request.
-//
-// SecurityStateModel::SecurityInfo is the main data structure computed
-// by a SecurityStateModel. SecurityInfo contains a SecurityLevel (which
-// is a single value describing the overall security state) along with
-// information that a consumer might want to display in UI to explain or
-// elaborate on the SecurityLevel.
-class SecurityStateModel {
- public:
-  // Describes the overall security state of the page.
-  //
-  // If you reorder, add, or delete values from this enum, you must also
-  // update the UI icons in ToolbarModelImpl::GetIconForSecurityLevel.
-  //
-  // A Java counterpart will be generated for this enum.
-  // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.components.security_state
-  // GENERATED_JAVA_CLASS_NAME_OVERRIDE: ConnectionSecurityLevel
-  enum SecurityLevel {
-    // HTTP/no URL/HTTPS but with insecure passive content on the page.
-    NONE,
-
-    // HTTP, in a case where we want to show a visible warning about the page's
-    // lack of security.
-    //
-    // The criteria used to classify pages as NONE vs. HTTP_SHOW_WARNING will
-    // change over time. Eventually, NONE will be eliminated.
-    // See https://crbug.com/647754.
-    HTTP_SHOW_WARNING,
-
-    // HTTPS with valid EV cert.
-    EV_SECURE,
-
-    // HTTPS (non-EV) with valid cert.
-    SECURE,
-
-    // HTTPS, but with an outdated protocol version.
-    SECURITY_WARNING,
-
-    // HTTPS, but the certificate verification chain is anchored on a
-    // certificate that was installed by the system administrator.
-    SECURE_WITH_POLICY_INSTALLED_CERT,
-
-    // Attempted HTTPS and failed, page not authenticated, HTTPS with
-    // insecure active content on the page, malware, phishing, or any other
-    // serious security issue that could be dangerous.
-    DANGEROUS,
-  };
-
-  // Describes how the SHA1 deprecation policy applies to an HTTPS
-  // connection.
-  enum SHA1DeprecationStatus {
-    UNKNOWN_SHA1,
-    // No SHA1 deprecation policy applies.
-    NO_DEPRECATED_SHA1,
-    // The connection used a certificate with a SHA1 signature in the
-    // chain, and policy says that the connection should be treated with a
-    // warning.
-    DEPRECATED_SHA1_MINOR,
-    // The connection used a certificate with a SHA1 signature in the
-    // chain, and policy says that the connection should be treated as
-    // broken HTTPS.
-    DEPRECATED_SHA1_MAJOR,
-  };
-
-  // The ContentStatus enum is used to describe content on the page that
-  // has significantly different security properties than the main page
-  // load. Content can be passive content that is displayed (such as
-  // images) or active content that is run (such as scripts or iframes).
-  enum ContentStatus {
-    CONTENT_STATUS_UNKNOWN,
-    CONTENT_STATUS_NONE,
-    CONTENT_STATUS_DISPLAYED,
-    CONTENT_STATUS_RAN,
-    CONTENT_STATUS_DISPLAYED_AND_RAN,
-  };
-
-  // Describes the security status of a page or request. This is the
-  // main data structure provided by this class.
-  struct SecurityInfo {
-    SecurityInfo();
-    ~SecurityInfo();
-    SecurityLevel security_level;
-    // True if the page fails the browser's malware or phishing checks.
-    bool fails_malware_check;
-    SHA1DeprecationStatus sha1_deprecation_status;
-    // |mixed_content_status| describes the presence of content that was
-    // loaded over a nonsecure (HTTP) connection.
-    ContentStatus mixed_content_status;
-    // |content_with_cert_errors_status| describes the presence of
-    // content that was loaded over an HTTPS connection with
-    // certificate errors.
-    ContentStatus content_with_cert_errors_status;
-    // The verification statuses of the signed certificate timestamps
-    // for the connection.
-    std::vector<net::ct::SCTVerifyStatus> sct_verify_statuses;
-    bool scheme_is_cryptographic;
-    net::CertStatus cert_status;
-    scoped_refptr<net::X509Certificate> certificate;
-    // The security strength, in bits, of the SSL cipher suite. In late
-    // 2015, 128 is considered the minimum.
-    //
-    // 0 means the connection uses HTTPS but is not encrypted.  -1 means
-    // the security strength is unknown or the connection does not use
-    // HTTPS.
-    int security_bits;
-    // Information about the SSL connection, such as protocol and
-    // ciphersuite. See ssl_connection_flags.h in net.
-    int connection_status;
-    // The ID of the (EC)DH group used by the key exchange. The value is zero if
-    // unknown (older cache entries may not store the value) or not applicable.
-    uint16_t key_exchange_group;
-    // A mask that indicates which of the protocol version,
-    // key exchange, or cipher for the connection is considered
-    // obsolete. See net::ObsoleteSSLMask for specific mask values.
-    int obsolete_ssl_status;
-
-    // True if pinning was bypassed due to a local trust anchor.
-    bool pkp_bypassed;
-
-    // True if the page displayed sensitive user data inputs (like a
-    // password or credit card) on an HTTP page.
-    bool displayed_private_user_data_input_on_http;
-  };
-
-  // Contains the security state relevant to computing the SecurityInfo
-  // for a page. This is the input to GetSecurityInfo() provided by the
-  // model's client.
-  struct VisibleSecurityState {
-    VisibleSecurityState();
-    ~VisibleSecurityState();
-    bool operator==(const VisibleSecurityState& other) const;
-    GURL url;
-
-    // True if the page fails the browser's malware or phishing checks.
-    bool fails_malware_check;
-
-    // CONNECTION SECURITY FIELDS
-    // Whether the connection security fields are initialized.
-    bool connection_info_initialized;
-    // The following fields contain information about the connection
-    // used to load the page or request.
-    scoped_refptr<net::X509Certificate> certificate;
-    net::CertStatus cert_status;
-    int connection_status;
-    // The ID of the (EC)DH group used by the key exchange. The value is zero if
-    // unknown (older cache entries may not store the value) or not applicable.
-    uint16_t key_exchange_group;
-    int security_bits;
-    // The verification statuses of the Signed Certificate
-    // Timestamps (if any) that the server provided.
-    std::vector<net::ct::SCTVerifyStatus> sct_verify_statuses;
-    // True if the page displayed passive mixed content.
-    bool displayed_mixed_content;
-    // True if the page ran active mixed content.
-    bool ran_mixed_content;
-    // True if the page displayed passive subresources with certificate errors.
-    bool displayed_content_with_cert_errors;
-    // True if the page ran active subresources with certificate errors.
-    bool ran_content_with_cert_errors;
-    // True if PKP was bypassed due to a local trust anchor.
-    bool pkp_bypassed;
-    // True if the page was an HTTP page that displayed a password field.
-    bool displayed_password_field_on_http;
-    // True if the page was an HTTP page that displayed a credit card field.
-    bool displayed_credit_card_field_on_http;
-  };
-
-  // These security levels describe the treatment given to pages that
-  // display and run mixed content. They are used to coordinate the
-  // treatment of mixed content with other security UI elements.
-  static const SecurityLevel kDisplayedInsecureContentLevel;
-  static const SecurityLevel kRanInsecureContentLevel;
-
-  SecurityStateModel();
-  virtual ~SecurityStateModel();
-
-  // Populates |result| to describe the current page.
-  void GetSecurityInfo(SecurityInfo* result) const;
-
-  void SetClient(SecurityStateModelClient* client);
-
- private:
-  SecurityStateModelClient* client_;
-
-  DISALLOW_COPY_AND_ASSIGN(SecurityStateModel);
-};
-
-}  // namespace security_state
-
-#endif  // COMPONENTS_SECURITY_STATE_SECURITY_STATE_MODEL_H_