| 1 | /* |
| 2 | * Copyright (C) 2011 Google, Inc. All rights reserved. |
| 3 | * Copyright (C) 2016-2017 Apple Inc. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY |
| 15 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 17 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| 18 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 19 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 20 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 21 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 22 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | #include "config.h" |
| 28 | #include "ContentSecurityPolicyDirectiveList.h" |
| 29 | |
| 30 | #include "ContentSecurityPolicyDirectiveNames.h" |
| 31 | #include "Document.h" |
| 32 | #include "Frame.h" |
| 33 | #include "ParsingUtilities.h" |
| 34 | #include "SecurityContext.h" |
| 35 | |
| 36 | namespace WebCore { |
| 37 | |
| 38 | static bool isDirectiveNameCharacter(UChar c) |
| 39 | { |
| 40 | return isASCIIAlphanumeric(c) || c == '-'; |
| 41 | } |
| 42 | |
| 43 | static bool isDirectiveValueCharacter(UChar c) |
| 44 | { |
| 45 | return isASCIISpace(c) || (c >= 0x21 && c <= 0x7e); // Whitespace + VCHAR |
| 46 | } |
| 47 | |
| 48 | static inline bool checkEval(ContentSecurityPolicySourceListDirective* directive) |
| 49 | { |
| 50 | return !directive || directive->allowEval(); |
| 51 | } |
| 52 | |
| 53 | static inline bool checkInline(ContentSecurityPolicySourceListDirective* directive) |
| 54 | { |
| 55 | return !directive || directive->allowInline(); |
| 56 | } |
| 57 | |
| 58 | static inline bool checkSource(ContentSecurityPolicySourceListDirective* directive, const URL& url, bool didReceiveRedirectResponse = false, ContentSecurityPolicySourceListDirective::ShouldAllowEmptyURLIfSourceListIsNotNone shouldAllowEmptyURLIfSourceListEmpty = ContentSecurityPolicySourceListDirective::ShouldAllowEmptyURLIfSourceListIsNotNone::No) |
| 59 | { |
| 60 | return !directive || directive->allows(url, didReceiveRedirectResponse, shouldAllowEmptyURLIfSourceListEmpty); |
| 61 | } |
| 62 | |
| 63 | static inline bool checkHash(ContentSecurityPolicySourceListDirective* directive, const ContentSecurityPolicyHash& hash) |
| 64 | { |
| 65 | return !directive || directive->allows(hash); |
| 66 | } |
| 67 | |
| 68 | static inline bool checkNonce(ContentSecurityPolicySourceListDirective* directive, const String& nonce) |
| 69 | { |
| 70 | return !directive || directive->allows(nonce); |
| 71 | } |
| 72 | |
| 73 | // Used to compute the comparison URL when checking frame-ancestors. We do this weird conversion so that child |
| 74 | // frames of a page with a unique origin (e.g. about:blank) are not blocked due to their frame-ancestors policy |
| 75 | // and do not need to add the parent's URL to their policy. The latter could allow the child page to be framed |
| 76 | // by anyone. See <https://github.com/w3c/webappsec/issues/311> for more details. |
| 77 | static inline URL urlFromOrigin(const SecurityOrigin& origin) |
| 78 | { |
| 79 | return { URL { }, origin.toString() }; |
| 80 | } |
| 81 | |
| 82 | static inline bool checkFrameAncestors(ContentSecurityPolicySourceListDirective* directive, const Frame& frame) |
| 83 | { |
| 84 | if (!directive) |
| 85 | return true; |
| 86 | bool didReceiveRedirectResponse = false; |
| 87 | for (Frame* current = frame.tree().parent(); current; current = current->tree().parent()) { |
| 88 | URL origin = urlFromOrigin(current->document()->securityOrigin()); |
| 89 | if (!origin.isValid() || !directive->allows(origin, didReceiveRedirectResponse, ContentSecurityPolicySourceListDirective::ShouldAllowEmptyURLIfSourceListIsNotNone::No)) |
| 90 | return false; |
| 91 | } |
| 92 | return true; |
| 93 | } |
| 94 | |
| 95 | static inline bool checkFrameAncestors(ContentSecurityPolicySourceListDirective* directive, const Vector<RefPtr<SecurityOrigin>>& ancestorOrigins) |
| 96 | { |
| 97 | if (!directive) |
| 98 | return true; |
| 99 | bool didReceiveRedirectResponse = false; |
| 100 | for (auto& origin : ancestorOrigins) { |
| 101 | URL originURL = urlFromOrigin(*origin); |
| 102 | if (!originURL.isValid() || !directive->allows(originURL, didReceiveRedirectResponse, ContentSecurityPolicySourceListDirective::ShouldAllowEmptyURLIfSourceListIsNotNone::No)) |
| 103 | return false; |
| 104 | } |
| 105 | return true; |
| 106 | } |
| 107 | |
| 108 | static inline bool checkMediaType(ContentSecurityPolicyMediaListDirective* directive, const String& type, const String& typeAttribute) |
| 109 | { |
| 110 | if (!directive) |
| 111 | return true; |
| 112 | if (typeAttribute.isEmpty() || typeAttribute.stripWhiteSpace() != type) |
| 113 | return false; |
| 114 | return directive->allows(type); |
| 115 | } |
| 116 | |
| 117 | ContentSecurityPolicyDirectiveList::(ContentSecurityPolicy& policy, ContentSecurityPolicyHeaderType type) |
| 118 | : m_policy(policy) |
| 119 | , m_headerType(type) |
| 120 | { |
| 121 | m_reportOnly = (type == ContentSecurityPolicyHeaderType::Report || type == ContentSecurityPolicyHeaderType::PrefixedReport); |
| 122 | } |
| 123 | |
| 124 | std::unique_ptr<ContentSecurityPolicyDirectiveList> ContentSecurityPolicyDirectiveList::(ContentSecurityPolicy& policy, const String& , ContentSecurityPolicyHeaderType type, ContentSecurityPolicy::PolicyFrom from) |
| 125 | { |
| 126 | auto directives = std::make_unique<ContentSecurityPolicyDirectiveList>(policy, type); |
| 127 | directives->parse(header, from); |
| 128 | |
| 129 | if (!checkEval(directives->operativeDirective(directives->m_scriptSrc.get()))) { |
| 130 | String evalDisabledMessage = makeString("Refused to evaluate a string as JavaScript because 'unsafe-eval' is not an allowed source of script in the following Content Security Policy directive: \"" , directives->operativeDirective(directives->m_scriptSrc.get())->text(), "\".\n" ); |
| 131 | directives->setEvalDisabledErrorMessage(evalDisabledMessage); |
| 132 | String webAssemblyDisabledMessage = makeString("Refused to create a WebAssembly object because 'unsafe-eval' is not an allowed source of script in the following Content Security Policy directive: \"" , directives->operativeDirective(directives->m_scriptSrc.get())->text(), "\".\n" ); |
| 133 | directives->setWebAssemblyDisabledErrorMessage(webAssemblyDisabledMessage); |
| 134 | } |
| 135 | |
| 136 | if (directives->isReportOnly() && directives->reportURIs().isEmpty()) |
| 137 | policy.reportMissingReportURI(header); |
| 138 | |
| 139 | return directives; |
| 140 | } |
| 141 | |
| 142 | ContentSecurityPolicySourceListDirective* ContentSecurityPolicyDirectiveList::operativeDirective(ContentSecurityPolicySourceListDirective* directive) const |
| 143 | { |
| 144 | return directive ? directive : m_defaultSrc.get(); |
| 145 | } |
| 146 | |
| 147 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForUnsafeEval() const |
| 148 | { |
| 149 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_scriptSrc.get()); |
| 150 | if (checkEval(operativeDirective)) |
| 151 | return nullptr; |
| 152 | return operativeDirective; |
| 153 | } |
| 154 | |
| 155 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForUnsafeInlineScript() const |
| 156 | { |
| 157 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_scriptSrc.get()); |
| 158 | if (checkInline(operativeDirective)) |
| 159 | return nullptr; |
| 160 | return operativeDirective; |
| 161 | } |
| 162 | |
| 163 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForUnsafeInlineStyle() const |
| 164 | { |
| 165 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_styleSrc.get()); |
| 166 | if (checkInline(operativeDirective)) |
| 167 | return nullptr; |
| 168 | return operativeDirective; |
| 169 | } |
| 170 | |
| 171 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForScriptHash(const ContentSecurityPolicyHash& hash) const |
| 172 | { |
| 173 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_scriptSrc.get()); |
| 174 | if (checkHash(operativeDirective, hash)) |
| 175 | return nullptr; |
| 176 | return operativeDirective; |
| 177 | } |
| 178 | |
| 179 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForStyleHash(const ContentSecurityPolicyHash& hash) const |
| 180 | { |
| 181 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_styleSrc.get()); |
| 182 | if (checkHash(operativeDirective, hash)) |
| 183 | return nullptr; |
| 184 | return operativeDirective; |
| 185 | } |
| 186 | |
| 187 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForScriptNonce(const String& nonce) const |
| 188 | { |
| 189 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_scriptSrc.get()); |
| 190 | if (checkNonce(operativeDirective, nonce)) |
| 191 | return nullptr; |
| 192 | return operativeDirective; |
| 193 | } |
| 194 | |
| 195 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForStyleNonce(const String& nonce) const |
| 196 | { |
| 197 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_styleSrc.get()); |
| 198 | if (checkNonce(operativeDirective, nonce)) |
| 199 | return nullptr; |
| 200 | return operativeDirective; |
| 201 | } |
| 202 | |
| 203 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForBaseURI(const URL& url) const |
| 204 | { |
| 205 | if (checkSource(m_baseURI.get(), url)) |
| 206 | return nullptr; |
| 207 | return m_baseURI.get(); |
| 208 | } |
| 209 | |
| 210 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForChildContext(const URL& url, bool didReceiveRedirectResponse) const |
| 211 | { |
| 212 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_childSrc.get()); |
| 213 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 214 | return nullptr; |
| 215 | return operativeDirective; |
| 216 | } |
| 217 | |
| 218 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForConnectSource(const URL& url, bool didReceiveRedirectResponse) const |
| 219 | { |
| 220 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_connectSrc.get()); |
| 221 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 222 | return nullptr; |
| 223 | return operativeDirective; |
| 224 | } |
| 225 | |
| 226 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForFont(const URL& url, bool didReceiveRedirectResponse) const |
| 227 | { |
| 228 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_fontSrc.get()); |
| 229 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 230 | return nullptr; |
| 231 | return operativeDirective; |
| 232 | } |
| 233 | |
| 234 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForFormAction(const URL& url, bool didReceiveRedirectResponse) const |
| 235 | { |
| 236 | if (checkSource(m_formAction.get(), url, didReceiveRedirectResponse)) |
| 237 | return nullptr; |
| 238 | return m_formAction.get(); |
| 239 | } |
| 240 | |
| 241 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForFrame(const URL& url, bool didReceiveRedirectResponse) const |
| 242 | { |
| 243 | if (url.protocolIsAbout()) |
| 244 | return nullptr; |
| 245 | |
| 246 | // We must enforce the frame-src directive (if specified) before enforcing the child-src directive for a nested browsing |
| 247 | // context by <https://w3c.github.io/webappsec-csp/2/#directive-child-src-nested> (29 August 2015). |
| 248 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_frameSrc ? m_frameSrc.get() : m_childSrc.get()); |
| 249 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 250 | return nullptr; |
| 251 | return operativeDirective; |
| 252 | } |
| 253 | |
| 254 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForFrameAncestor(const Frame& frame) const |
| 255 | { |
| 256 | if (checkFrameAncestors(m_frameAncestors.get(), frame)) |
| 257 | return nullptr; |
| 258 | return m_frameAncestors.get(); |
| 259 | } |
| 260 | |
| 261 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForFrameAncestorOrigins(const Vector<RefPtr<SecurityOrigin>>& ancestorOrigins) const |
| 262 | { |
| 263 | if (checkFrameAncestors(m_frameAncestors.get(), ancestorOrigins)) |
| 264 | return nullptr; |
| 265 | return m_frameAncestors.get(); |
| 266 | } |
| 267 | |
| 268 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForImage(const URL& url, bool didReceiveRedirectResponse) const |
| 269 | { |
| 270 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_imgSrc.get()); |
| 271 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 272 | return nullptr; |
| 273 | return operativeDirective; |
| 274 | } |
| 275 | |
| 276 | #if ENABLE(APPLICATION_MANIFEST) |
| 277 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForManifest(const URL& url, bool didReceiveRedirectResponse) const |
| 278 | { |
| 279 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_manifestSrc.get()); |
| 280 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 281 | return nullptr; |
| 282 | return operativeDirective; |
| 283 | } |
| 284 | #endif // ENABLE(APPLICATION_MANIFEST) |
| 285 | |
| 286 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForMedia(const URL& url, bool didReceiveRedirectResponse) const |
| 287 | { |
| 288 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_mediaSrc.get()); |
| 289 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 290 | return nullptr; |
| 291 | return operativeDirective; |
| 292 | } |
| 293 | |
| 294 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForObjectSource(const URL& url, bool didReceiveRedirectResponse, ContentSecurityPolicySourceListDirective::ShouldAllowEmptyURLIfSourceListIsNotNone shouldAllowEmptyURLIfSourceListEmpty) const |
| 295 | { |
| 296 | if (url.protocolIsAbout()) |
| 297 | return nullptr; |
| 298 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_objectSrc.get()); |
| 299 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse, shouldAllowEmptyURLIfSourceListEmpty)) |
| 300 | return nullptr; |
| 301 | return operativeDirective; |
| 302 | } |
| 303 | |
| 304 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForPluginType(const String& type, const String& typeAttribute) const |
| 305 | { |
| 306 | if (checkMediaType(m_pluginTypes.get(), type, typeAttribute)) |
| 307 | return nullptr; |
| 308 | return m_pluginTypes.get(); |
| 309 | } |
| 310 | |
| 311 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForScript(const URL& url, bool didReceiveRedirectResponse) const |
| 312 | { |
| 313 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_scriptSrc.get()); |
| 314 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 315 | return nullptr; |
| 316 | return operativeDirective; |
| 317 | } |
| 318 | |
| 319 | const ContentSecurityPolicyDirective* ContentSecurityPolicyDirectiveList::violatedDirectiveForStyle(const URL& url, bool didReceiveRedirectResponse) const |
| 320 | { |
| 321 | ContentSecurityPolicySourceListDirective* operativeDirective = this->operativeDirective(m_styleSrc.get()); |
| 322 | if (checkSource(operativeDirective, url, didReceiveRedirectResponse)) |
| 323 | return nullptr; |
| 324 | return operativeDirective; |
| 325 | } |
| 326 | |
| 327 | // policy = directive-list |
| 328 | // directive-list = [ directive *( ";" [ directive ] ) ] |
| 329 | // |
| 330 | void ContentSecurityPolicyDirectiveList::parse(const String& policy, ContentSecurityPolicy::PolicyFrom policyFrom) |
| 331 | { |
| 332 | m_header = policy; |
| 333 | if (policy.isEmpty()) |
| 334 | return; |
| 335 | |
| 336 | auto characters = StringView(policy).upconvertedCharacters(); |
| 337 | const UChar* position = characters; |
| 338 | const UChar* end = position + policy.length(); |
| 339 | |
| 340 | while (position < end) { |
| 341 | const UChar* directiveBegin = position; |
| 342 | skipUntil<UChar>(position, end, ';'); |
| 343 | |
| 344 | String name, value; |
| 345 | if (parseDirective(directiveBegin, position, name, value)) { |
| 346 | ASSERT(!name.isEmpty()); |
| 347 | if (policyFrom == ContentSecurityPolicy::PolicyFrom::Inherited) { |
| 348 | if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::upgradeInsecureRequests)) |
| 349 | continue; |
| 350 | } else if (policyFrom == ContentSecurityPolicy::PolicyFrom::HTTPEquivMeta) { |
| 351 | if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::sandbox) |
| 352 | || equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::reportURI) |
| 353 | || equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::frameAncestors)) { |
| 354 | m_policy.reportInvalidDirectiveInHTTPEquivMeta(name); |
| 355 | continue; |
| 356 | } |
| 357 | } else if (policyFrom == ContentSecurityPolicy::PolicyFrom::InheritedForPluginDocument) { |
| 358 | if (!equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::pluginTypes) |
| 359 | && !equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::reportURI)) |
| 360 | continue; |
| 361 | } |
| 362 | addDirective(name, value); |
| 363 | } |
| 364 | |
| 365 | ASSERT(position == end || *position == ';'); |
| 366 | skipExactly<UChar>(position, end, ';'); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | // directive = *WSP [ directive-name [ WSP directive-value ] ] |
| 371 | // directive-name = 1*( ALPHA / DIGIT / "-" ) |
| 372 | // directive-value = *( WSP / <VCHAR except ";"> ) |
| 373 | // |
| 374 | bool ContentSecurityPolicyDirectiveList::parseDirective(const UChar* begin, const UChar* end, String& name, String& value) |
| 375 | { |
| 376 | ASSERT(name.isEmpty()); |
| 377 | ASSERT(value.isEmpty()); |
| 378 | |
| 379 | const UChar* position = begin; |
| 380 | skipWhile<UChar, isASCIISpace>(position, end); |
| 381 | |
| 382 | // Empty directive (e.g. ";;;"). Exit early. |
| 383 | if (position == end) |
| 384 | return false; |
| 385 | |
| 386 | const UChar* nameBegin = position; |
| 387 | skipWhile<UChar, isDirectiveNameCharacter>(position, end); |
| 388 | |
| 389 | // The directive-name must be non-empty. |
| 390 | if (nameBegin == position) { |
| 391 | skipWhile<UChar, isNotASCIISpace>(position, end); |
| 392 | m_policy.reportUnsupportedDirective(String(nameBegin, position - nameBegin)); |
| 393 | return false; |
| 394 | } |
| 395 | |
| 396 | name = String(nameBegin, position - nameBegin); |
| 397 | |
| 398 | if (position == end) |
| 399 | return true; |
| 400 | |
| 401 | if (!skipExactly<UChar, isASCIISpace>(position, end)) { |
| 402 | skipWhile<UChar, isNotASCIISpace>(position, end); |
| 403 | m_policy.reportUnsupportedDirective(String(nameBegin, position - nameBegin)); |
| 404 | return false; |
| 405 | } |
| 406 | |
| 407 | skipWhile<UChar, isASCIISpace>(position, end); |
| 408 | |
| 409 | const UChar* valueBegin = position; |
| 410 | skipWhile<UChar, isDirectiveValueCharacter>(position, end); |
| 411 | |
| 412 | if (position != end) { |
| 413 | m_policy.reportInvalidDirectiveValueCharacter(name, String(valueBegin, end - valueBegin)); |
| 414 | return false; |
| 415 | } |
| 416 | |
| 417 | // The directive-value may be empty. |
| 418 | if (valueBegin == position) |
| 419 | return true; |
| 420 | |
| 421 | value = String(valueBegin, position - valueBegin); |
| 422 | return true; |
| 423 | } |
| 424 | |
| 425 | void ContentSecurityPolicyDirectiveList::parseReportURI(const String& name, const String& value) |
| 426 | { |
| 427 | if (!m_reportURIs.isEmpty()) { |
| 428 | m_policy.reportDuplicateDirective(name); |
| 429 | return; |
| 430 | } |
| 431 | |
| 432 | auto characters = StringView(value).upconvertedCharacters(); |
| 433 | const UChar* position = characters; |
| 434 | const UChar* end = position + value.length(); |
| 435 | |
| 436 | while (position < end) { |
| 437 | skipWhile<UChar, isASCIISpace>(position, end); |
| 438 | |
| 439 | const UChar* urlBegin = position; |
| 440 | skipWhile<UChar, isNotASCIISpace>(position, end); |
| 441 | |
| 442 | if (urlBegin < position) |
| 443 | m_reportURIs.append(value.substring(urlBegin - characters, position - urlBegin)); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | |
| 448 | template<class CSPDirectiveType> |
| 449 | void ContentSecurityPolicyDirectiveList::setCSPDirective(const String& name, const String& value, std::unique_ptr<CSPDirectiveType>& directive) |
| 450 | { |
| 451 | if (directive) { |
| 452 | m_policy.reportDuplicateDirective(name); |
| 453 | return; |
| 454 | } |
| 455 | directive = std::make_unique<CSPDirectiveType>(*this, name, value); |
| 456 | } |
| 457 | |
| 458 | void ContentSecurityPolicyDirectiveList::applySandboxPolicy(const String& name, const String& sandboxPolicy) |
| 459 | { |
| 460 | if (m_reportOnly) { |
| 461 | m_policy.reportInvalidDirectiveInReportOnlyMode(name); |
| 462 | return; |
| 463 | } |
| 464 | if (m_haveSandboxPolicy) { |
| 465 | m_policy.reportDuplicateDirective(name); |
| 466 | return; |
| 467 | } |
| 468 | m_haveSandboxPolicy = true; |
| 469 | String invalidTokens; |
| 470 | m_policy.enforceSandboxFlags(SecurityContext::parseSandboxPolicy(sandboxPolicy, invalidTokens)); |
| 471 | if (!invalidTokens.isNull()) |
| 472 | m_policy.reportInvalidSandboxFlags(invalidTokens); |
| 473 | } |
| 474 | |
| 475 | void ContentSecurityPolicyDirectiveList::setUpgradeInsecureRequests(const String& name) |
| 476 | { |
| 477 | if (m_reportOnly) { |
| 478 | m_policy.reportInvalidDirectiveInReportOnlyMode(name); |
| 479 | return; |
| 480 | } |
| 481 | if (m_upgradeInsecureRequests) { |
| 482 | m_policy.reportDuplicateDirective(name); |
| 483 | return; |
| 484 | } |
| 485 | m_upgradeInsecureRequests = true; |
| 486 | m_policy.setUpgradeInsecureRequests(true); |
| 487 | } |
| 488 | |
| 489 | void ContentSecurityPolicyDirectiveList::setBlockAllMixedContentEnabled(const String& name) |
| 490 | { |
| 491 | if (m_hasBlockAllMixedContentDirective) { |
| 492 | m_policy.reportDuplicateDirective(name); |
| 493 | return; |
| 494 | } |
| 495 | m_hasBlockAllMixedContentDirective = true; |
| 496 | } |
| 497 | |
| 498 | void ContentSecurityPolicyDirectiveList::addDirective(const String& name, const String& value) |
| 499 | { |
| 500 | ASSERT(!name.isEmpty()); |
| 501 | |
| 502 | if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::defaultSrc)) { |
| 503 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_defaultSrc); |
| 504 | m_policy.addHashAlgorithmsForInlineScripts(m_defaultSrc->hashAlgorithmsUsed()); |
| 505 | m_policy.addHashAlgorithmsForInlineStylesheets(m_defaultSrc->hashAlgorithmsUsed()); |
| 506 | } else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::scriptSrc)) { |
| 507 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_scriptSrc); |
| 508 | m_policy.addHashAlgorithmsForInlineScripts(m_scriptSrc->hashAlgorithmsUsed()); |
| 509 | } else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::styleSrc)) { |
| 510 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_styleSrc); |
| 511 | m_policy.addHashAlgorithmsForInlineStylesheets(m_styleSrc->hashAlgorithmsUsed()); |
| 512 | } else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::objectSrc)) |
| 513 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_objectSrc); |
| 514 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::frameSrc)) { |
| 515 | // FIXME: Log to console "The frame-src directive is deprecated. Use the child-src directive instead." |
| 516 | // See <https://bugs.webkit.org/show_bug.cgi?id=155773>. |
| 517 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_frameSrc); |
| 518 | } else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::imgSrc)) |
| 519 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_imgSrc); |
| 520 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::fontSrc)) |
| 521 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_fontSrc); |
| 522 | #if ENABLE(APPLICATION_MANIFEST) |
| 523 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::manifestSrc)) |
| 524 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_manifestSrc); |
| 525 | #endif |
| 526 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::mediaSrc)) |
| 527 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_mediaSrc); |
| 528 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::connectSrc)) |
| 529 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_connectSrc); |
| 530 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::childSrc)) |
| 531 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_childSrc); |
| 532 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::formAction)) |
| 533 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_formAction); |
| 534 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::baseURI)) |
| 535 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_baseURI); |
| 536 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::frameAncestors)) { |
| 537 | if (m_reportOnly) { |
| 538 | m_policy.reportInvalidDirectiveInReportOnlyMode(name); |
| 539 | return; |
| 540 | } |
| 541 | setCSPDirective<ContentSecurityPolicySourceListDirective>(name, value, m_frameAncestors); |
| 542 | } else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::pluginTypes)) |
| 543 | setCSPDirective<ContentSecurityPolicyMediaListDirective>(name, value, m_pluginTypes); |
| 544 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::sandbox)) |
| 545 | applySandboxPolicy(name, value); |
| 546 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::reportURI)) |
| 547 | parseReportURI(name, value); |
| 548 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::upgradeInsecureRequests)) |
| 549 | setUpgradeInsecureRequests(name); |
| 550 | else if (equalIgnoringASCIICase(name, ContentSecurityPolicyDirectiveNames::blockAllMixedContent)) |
| 551 | setBlockAllMixedContentEnabled(name); |
| 552 | else |
| 553 | m_policy.reportUnsupportedDirective(name); |
| 554 | } |
| 555 | |
| 556 | } // namespace WebCore |
| 557 | |