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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "components/security_state/security_state_model.h" | |
| 6 | |
| 7 #include <stdint.h> | |
| 8 | |
| 9 #include "base/command_line.h" | |
| 10 #include "base/metrics/field_trial.h" | |
| 11 #include "base/metrics/histogram_macros.h" | |
| 12 #include "components/security_state/security_state_model_client.h" | |
| 13 #include "components/security_state/switches.h" | |
| 14 #include "net/ssl/ssl_cipher_suite_names.h" | |
| 15 #include "net/ssl/ssl_connection_status_flags.h" | |
| 16 | |
| 17 namespace security_state { | |
| 18 | |
| 19 namespace { | |
| 20 | |
| 21 // Do not change or reorder this enum, and add new values at the end. It is used | |
| 22 // in the MarkHttpAs histogram. | |
| 23 enum MarkHttpStatus { NEUTRAL, NON_SECURE, HTTP_SHOW_WARNING, LAST_STATUS }; | |
| 24 | |
| 25 // If |switch_or_field_trial_group| corresponds to a valid | |
| 26 // MarkHttpAs group, sets |*level| and |*histogram_status| to the | |
| 27 // appropriate values and returns true. Otherwise, returns false. | |
| 28 bool GetSecurityLevelAndHistogramValueForNonSecureFieldTrial( | |
| 29 std::string switch_or_field_trial_group, | |
| 30 bool displayed_sensitive_input_on_http, | |
| 31 SecurityStateModel::SecurityLevel* level, | |
| 32 MarkHttpStatus* histogram_status) { | |
| 33 if (switch_or_field_trial_group == switches::kMarkHttpAsNeutral) { | |
| 34 *level = SecurityStateModel::NONE; | |
| 35 *histogram_status = NEUTRAL; | |
| 36 return true; | |
| 37 } | |
| 38 | |
| 39 if (switch_or_field_trial_group == switches::kMarkHttpAsDangerous) { | |
| 40 *level = SecurityStateModel::DANGEROUS; | |
| 41 *histogram_status = NON_SECURE; | |
| 42 return true; | |
| 43 } | |
| 44 | |
| 45 if (switch_or_field_trial_group == | |
| 46 switches::kMarkHttpWithPasswordsOrCcWithChip) { | |
| 47 if (displayed_sensitive_input_on_http) { | |
| 48 *level = SecurityStateModel::HTTP_SHOW_WARNING; | |
| 49 *histogram_status = HTTP_SHOW_WARNING; | |
| 50 } else { | |
| 51 *level = SecurityStateModel::NONE; | |
| 52 *histogram_status = NEUTRAL; | |
| 53 } | |
| 54 return true; | |
| 55 } | |
| 56 | |
| 57 return false; | |
| 58 } | |
| 59 | |
| 60 SecurityStateModel::SecurityLevel GetSecurityLevelForNonSecureFieldTrial( | |
| 61 bool displayed_sensitive_input_on_http) { | |
| 62 std::string choice = | |
| 63 base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( | |
| 64 switches::kMarkHttpAs); | |
| 65 std::string group = base::FieldTrialList::FindFullName("MarkNonSecureAs"); | |
| 66 | |
| 67 const char kEnumeration[] = "MarkHttpAs"; | |
| 68 | |
| 69 SecurityStateModel::SecurityLevel level = SecurityStateModel::NONE; | |
| 70 MarkHttpStatus status; | |
| 71 | |
| 72 // If the command-line switch is set, then it takes precedence over | |
| 73 // the field trial group. | |
| 74 if (!GetSecurityLevelAndHistogramValueForNonSecureFieldTrial( | |
| 75 choice, displayed_sensitive_input_on_http, &level, &status)) { | |
| 76 if (!GetSecurityLevelAndHistogramValueForNonSecureFieldTrial( | |
| 77 group, displayed_sensitive_input_on_http, &level, &status)) { | |
| 78 // If neither the command-line switch nor field trial group is set, then | |
| 79 // nonsecure defaults to neutral. | |
| 80 status = NEUTRAL; | |
| 81 level = SecurityStateModel::NONE; | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 UMA_HISTOGRAM_ENUMERATION(kEnumeration, status, LAST_STATUS); | |
| 86 return level; | |
| 87 } | |
| 88 | |
| 89 SecurityStateModel::SHA1DeprecationStatus GetSHA1DeprecationStatus( | |
| 90 const SecurityStateModel::VisibleSecurityState& visible_security_state) { | |
| 91 if (!visible_security_state.certificate || | |
| 92 !(visible_security_state.cert_status & | |
| 93 net::CERT_STATUS_SHA1_SIGNATURE_PRESENT)) | |
| 94 return SecurityStateModel::NO_DEPRECATED_SHA1; | |
| 95 | |
| 96 // The internal representation of the dates for UI treatment of SHA-1. | |
| 97 // See http://crbug.com/401365 for details. | |
| 98 static const int64_t kJanuary2017 = INT64_C(13127702400000000); | |
| 99 if (visible_security_state.certificate->valid_expiry() >= | |
| 100 base::Time::FromInternalValue(kJanuary2017)) | |
| 101 return SecurityStateModel::DEPRECATED_SHA1_MAJOR; | |
| 102 static const int64_t kJanuary2016 = INT64_C(13096080000000000); | |
| 103 if (visible_security_state.certificate->valid_expiry() >= | |
| 104 base::Time::FromInternalValue(kJanuary2016)) | |
| 105 return SecurityStateModel::DEPRECATED_SHA1_MINOR; | |
| 106 | |
| 107 return SecurityStateModel::NO_DEPRECATED_SHA1; | |
| 108 } | |
| 109 | |
| 110 SecurityStateModel::ContentStatus GetContentStatus(bool displayed, bool ran) { | |
| 111 if (ran && displayed) | |
| 112 return SecurityStateModel::CONTENT_STATUS_DISPLAYED_AND_RAN; | |
| 113 if (ran) | |
| 114 return SecurityStateModel::CONTENT_STATUS_RAN; | |
| 115 if (displayed) | |
| 116 return SecurityStateModel::CONTENT_STATUS_DISPLAYED; | |
| 117 return SecurityStateModel::CONTENT_STATUS_NONE; | |
| 118 } | |
| 119 | |
| 120 SecurityStateModel::SecurityLevel GetSecurityLevelForRequest( | |
| 121 const SecurityStateModel::VisibleSecurityState& visible_security_state, | |
| 122 SecurityStateModelClient* client, | |
| 123 SecurityStateModel::SHA1DeprecationStatus sha1_status, | |
| 124 SecurityStateModel::ContentStatus mixed_content_status, | |
| 125 SecurityStateModel::ContentStatus content_with_cert_errors_status) { | |
| 126 DCHECK(visible_security_state.connection_info_initialized || | |
| 127 visible_security_state.fails_malware_check); | |
| 128 | |
| 129 // Override the connection security information if the website failed the | |
| 130 // browser's malware checks. | |
| 131 if (visible_security_state.fails_malware_check) | |
| 132 return SecurityStateModel::DANGEROUS; | |
| 133 | |
| 134 GURL url = visible_security_state.url; | |
| 135 | |
| 136 bool is_cryptographic_with_certificate = | |
| 137 (url.SchemeIsCryptographic() && visible_security_state.certificate); | |
| 138 | |
| 139 // Set the security level to DANGEROUS for major certificate errors. | |
| 140 if (is_cryptographic_with_certificate && | |
| 141 net::IsCertStatusError(visible_security_state.cert_status) && | |
| 142 !net::IsCertStatusMinorError(visible_security_state.cert_status)) { | |
| 143 return SecurityStateModel::DANGEROUS; | |
| 144 } | |
| 145 | |
| 146 // Choose the appropriate security level for HTTP requests. | |
| 147 if (!is_cryptographic_with_certificate) { | |
| 148 if (!client->IsOriginSecure(url) && url.IsStandard()) { | |
| 149 return GetSecurityLevelForNonSecureFieldTrial( | |
| 150 visible_security_state.displayed_password_field_on_http || | |
| 151 visible_security_state.displayed_credit_card_field_on_http); | |
| 152 } | |
| 153 return SecurityStateModel::NONE; | |
| 154 } | |
| 155 | |
| 156 // Downgrade the security level for active insecure subresources. | |
| 157 if (mixed_content_status == SecurityStateModel::CONTENT_STATUS_RAN || | |
| 158 mixed_content_status == | |
| 159 SecurityStateModel::CONTENT_STATUS_DISPLAYED_AND_RAN || | |
| 160 content_with_cert_errors_status == | |
| 161 SecurityStateModel::CONTENT_STATUS_RAN || | |
| 162 content_with_cert_errors_status == | |
| 163 SecurityStateModel::CONTENT_STATUS_DISPLAYED_AND_RAN) { | |
| 164 return SecurityStateModel::kRanInsecureContentLevel; | |
| 165 } | |
| 166 | |
| 167 // Report if there is a policy cert first, before reporting any other | |
| 168 // authenticated-but-with-errors cases. A policy cert is a strong | |
| 169 // indicator of a MITM being present (the enterprise), while the | |
| 170 // other authenticated-but-with-errors indicate something may | |
| 171 // be wrong, or may be wrong in the future, but is unclear now. | |
| 172 if (client->UsedPolicyInstalledCertificate()) | |
| 173 return SecurityStateModel::SECURE_WITH_POLICY_INSTALLED_CERT; | |
| 174 | |
| 175 if (sha1_status == SecurityStateModel::DEPRECATED_SHA1_MAJOR) | |
| 176 return SecurityStateModel::DANGEROUS; | |
| 177 if (sha1_status == SecurityStateModel::DEPRECATED_SHA1_MINOR) | |
| 178 return SecurityStateModel::NONE; | |
| 179 | |
| 180 // Active mixed content is handled above. | |
| 181 DCHECK_NE(SecurityStateModel::CONTENT_STATUS_RAN, mixed_content_status); | |
| 182 DCHECK_NE(SecurityStateModel::CONTENT_STATUS_DISPLAYED_AND_RAN, | |
| 183 mixed_content_status); | |
| 184 | |
| 185 if (mixed_content_status == SecurityStateModel::CONTENT_STATUS_DISPLAYED || | |
| 186 content_with_cert_errors_status == | |
| 187 SecurityStateModel::CONTENT_STATUS_DISPLAYED) { | |
| 188 return SecurityStateModel::kDisplayedInsecureContentLevel; | |
| 189 } | |
| 190 | |
| 191 if (net::IsCertStatusError(visible_security_state.cert_status)) { | |
| 192 // Major cert errors are handled above. | |
| 193 DCHECK(net::IsCertStatusMinorError(visible_security_state.cert_status)); | |
| 194 return SecurityStateModel::NONE; | |
| 195 } | |
| 196 | |
| 197 if ((visible_security_state.cert_status & net::CERT_STATUS_IS_EV) && | |
| 198 visible_security_state.certificate) { | |
| 199 return SecurityStateModel::EV_SECURE; | |
| 200 } | |
| 201 return SecurityStateModel::SECURE; | |
| 202 } | |
| 203 | |
| 204 void SecurityInfoForRequest( | |
| 205 SecurityStateModelClient* client, | |
| 206 const SecurityStateModel::VisibleSecurityState& visible_security_state, | |
| 207 SecurityStateModel::SecurityInfo* security_info) { | |
| 208 if (!visible_security_state.connection_info_initialized) { | |
| 209 *security_info = SecurityStateModel::SecurityInfo(); | |
| 210 security_info->fails_malware_check = | |
| 211 visible_security_state.fails_malware_check; | |
| 212 if (security_info->fails_malware_check) { | |
| 213 security_info->security_level = GetSecurityLevelForRequest( | |
| 214 visible_security_state, client, SecurityStateModel::UNKNOWN_SHA1, | |
| 215 SecurityStateModel::CONTENT_STATUS_UNKNOWN, | |
| 216 SecurityStateModel::CONTENT_STATUS_UNKNOWN); | |
| 217 } | |
| 218 return; | |
| 219 } | |
| 220 security_info->certificate = visible_security_state.certificate; | |
| 221 security_info->sha1_deprecation_status = | |
| 222 GetSHA1DeprecationStatus(visible_security_state); | |
| 223 security_info->mixed_content_status = | |
| 224 GetContentStatus(visible_security_state.displayed_mixed_content, | |
| 225 visible_security_state.ran_mixed_content); | |
| 226 security_info->content_with_cert_errors_status = GetContentStatus( | |
| 227 visible_security_state.displayed_content_with_cert_errors, | |
| 228 visible_security_state.ran_content_with_cert_errors); | |
| 229 security_info->security_bits = visible_security_state.security_bits; | |
| 230 security_info->connection_status = visible_security_state.connection_status; | |
| 231 security_info->key_exchange_group = visible_security_state.key_exchange_group; | |
| 232 security_info->cert_status = visible_security_state.cert_status; | |
| 233 security_info->scheme_is_cryptographic = | |
| 234 visible_security_state.url.SchemeIsCryptographic(); | |
| 235 security_info->obsolete_ssl_status = | |
| 236 net::ObsoleteSSLStatus(security_info->connection_status); | |
| 237 security_info->pkp_bypassed = visible_security_state.pkp_bypassed; | |
| 238 security_info->sct_verify_statuses = | |
| 239 visible_security_state.sct_verify_statuses; | |
| 240 | |
| 241 security_info->fails_malware_check = | |
| 242 visible_security_state.fails_malware_check; | |
| 243 | |
| 244 security_info->displayed_private_user_data_input_on_http = | |
| 245 visible_security_state.displayed_password_field_on_http || | |
| 246 visible_security_state.displayed_credit_card_field_on_http; | |
| 247 | |
| 248 security_info->security_level = GetSecurityLevelForRequest( | |
| 249 visible_security_state, client, security_info->sha1_deprecation_status, | |
| 250 security_info->mixed_content_status, | |
| 251 security_info->content_with_cert_errors_status); | |
| 252 } | |
| 253 | |
| 254 } // namespace | |
| 255 | |
| 256 const SecurityStateModel::SecurityLevel | |
| 257 SecurityStateModel::kDisplayedInsecureContentLevel = | |
| 258 SecurityStateModel::NONE; | |
| 259 const SecurityStateModel::SecurityLevel | |
| 260 SecurityStateModel::kRanInsecureContentLevel = | |
| 261 SecurityStateModel::DANGEROUS; | |
| 262 | |
| 263 SecurityStateModel::SecurityInfo::SecurityInfo() | |
| 264 : security_level(SecurityStateModel::NONE), | |
| 265 fails_malware_check(false), | |
| 266 sha1_deprecation_status(SecurityStateModel::NO_DEPRECATED_SHA1), | |
| 267 mixed_content_status(SecurityStateModel::CONTENT_STATUS_NONE), | |
| 268 content_with_cert_errors_status(SecurityStateModel::CONTENT_STATUS_NONE), | |
| 269 scheme_is_cryptographic(false), | |
| 270 cert_status(0), | |
| 271 security_bits(-1), | |
| 272 connection_status(0), | |
| 273 key_exchange_group(0), | |
| 274 obsolete_ssl_status(net::OBSOLETE_SSL_NONE), | |
| 275 pkp_bypassed(false), | |
| 276 displayed_private_user_data_input_on_http(false) {} | |
| 277 | |
| 278 SecurityStateModel::SecurityInfo::~SecurityInfo() {} | |
| 279 | |
| 280 SecurityStateModel::SecurityStateModel() {} | |
| 281 | |
| 282 SecurityStateModel::~SecurityStateModel() {} | |
| 283 | |
| 284 void SecurityStateModel::GetSecurityInfo( | |
| 285 SecurityStateModel::SecurityInfo* result) const { | |
| 286 VisibleSecurityState new_visible_state; | |
| 287 client_->GetVisibleSecurityState(&new_visible_state); | |
| 288 SecurityInfoForRequest(client_, new_visible_state, result); | |
| 289 } | |
| 290 | |
| 291 void SecurityStateModel::SetClient(SecurityStateModelClient* client) { | |
| 292 client_ = client; | |
| 293 } | |
| 294 | |
| 295 SecurityStateModel::VisibleSecurityState::VisibleSecurityState() | |
| 296 : fails_malware_check(false), | |
| 297 connection_info_initialized(false), | |
| 298 cert_status(0), | |
| 299 connection_status(0), | |
| 300 key_exchange_group(0), | |
| 301 security_bits(-1), | |
| 302 displayed_mixed_content(false), | |
| 303 ran_mixed_content(false), | |
| 304 displayed_content_with_cert_errors(false), | |
| 305 ran_content_with_cert_errors(false), | |
| 306 pkp_bypassed(false), | |
| 307 displayed_password_field_on_http(false), | |
| 308 displayed_credit_card_field_on_http(false) {} | |
| 309 | |
| 310 SecurityStateModel::VisibleSecurityState::~VisibleSecurityState() {} | |
| 311 | |
| 312 bool SecurityStateModel::VisibleSecurityState::operator==( | |
| 313 const SecurityStateModel::VisibleSecurityState& other) const { | |
| 314 return (url == other.url && | |
| 315 fails_malware_check == other.fails_malware_check && | |
| 316 !!certificate == !!other.certificate && | |
| 317 (certificate ? certificate->Equals(other.certificate.get()) : true) && | |
| 318 connection_status == other.connection_status && | |
| 319 key_exchange_group == other.key_exchange_group && | |
| 320 security_bits == other.security_bits && | |
| 321 sct_verify_statuses == other.sct_verify_statuses && | |
| 322 displayed_mixed_content == other.displayed_mixed_content && | |
| 323 ran_mixed_content == other.ran_mixed_content && | |
| 324 displayed_content_with_cert_errors == | |
| 325 other.displayed_content_with_cert_errors && | |
| 326 ran_content_with_cert_errors == other.ran_content_with_cert_errors && | |
| 327 pkp_bypassed == other.pkp_bypassed && | |
| 328 displayed_password_field_on_http == | |
| 329 other.displayed_password_field_on_http && | |
| 330 displayed_credit_card_field_on_http == | |
| 331 other.displayed_credit_card_field_on_http); | |
| 332 } | |
| 333 | |
| 334 } // namespace security_state | |
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Chromium Code Reviews
Issue 2448943002:
Refactor SecurityStateModel/Clients for simplicity and reusability. (Closed)
