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/*
* Copyright (C) 2011 Google, Inc. All rights reserved.
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ContentSecurityPolicy_h
#define ContentSecurityPolicy_h
#include "ContentSecurityPolicyResponseHeaders.h"
#include "ScriptState.h"
#include <wtf/Vector.h>
#include <wtf/text/TextPosition.h>
namespace WTF {
class OrdinalNumber;
}
namespace WebCore {
class ContentSecurityPolicyDirectiveList;
class ContentSecurityPolicySource;
class DOMStringList;
class ScriptExecutionContext;
class SecurityOrigin;
class URL;
typedef Vector<std::unique_ptr<ContentSecurityPolicyDirectiveList>> CSPDirectiveListVector;
typedef int SandboxFlags;
class ContentSecurityPolicy {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit ContentSecurityPolicy(ScriptExecutionContext&);
explicit ContentSecurityPolicy(const SecurityOrigin&);
~ContentSecurityPolicy();
void copyStateFrom(const ContentSecurityPolicy*);
// Be sure to update the behavior of XSSAuditor::combineXSSProtectionHeaderAndCSP whenever you change this enum's content or ordering.
enum ReflectedXSSDisposition {
ReflectedXSSUnset = 0,
AllowReflectedXSS,
ReflectedXSSInvalid,
FilterReflectedXSS,
BlockReflectedXSS
};
ReflectedXSSDisposition reflectedXSSDisposition() const;
enum class PolicyFrom {
HTTPEquivMeta,
HTTPHeader,
Inherited,
};
ContentSecurityPolicyResponseHeaders responseHeaders() const;
void didReceiveHeaders(const ContentSecurityPolicyResponseHeaders&);
void processHTTPEquiv(const String& content, ContentSecurityPolicyHeaderType type) { didReceiveHeader(content, type, ContentSecurityPolicy::PolicyFrom::HTTPEquivMeta); }
enum class ReportingStatus {
SendReport,
SuppressReport
};
bool allowJavaScriptURLs(const String& contextURL, const WTF::OrdinalNumber& contextLine, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowInlineEventHandlers(const String& contextURL, const WTF::OrdinalNumber& contextLine, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowInlineScript(const String& contextURL, const WTF::OrdinalNumber& contextLine, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowInlineStyle(const String& contextURL, const WTF::OrdinalNumber& contextLine, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowEval(JSC::ExecState* = nullptr, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowPluginType(const String& type, const String& typeAttribute, const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowScriptFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowObjectFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowChildFrameFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowChildContextFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowImageFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowStyleFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowFontFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowMediaFromSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowConnectToSource(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowFormAction(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
bool allowBaseURI(const URL&, bool overrideContentSecurityPolicy = false, ContentSecurityPolicy::ReportingStatus = ContentSecurityPolicy::ReportingStatus::SendReport) const;
void setOverrideAllowInlineStyle(bool);
bool isActive() const;
void gatherReportURIs(DOMStringList&) const;
String evalDisabledErrorMessage() const;
bool experimentalFeaturesEnabled() const;
// The following functions are used by internal data structures to call back into this object when parsing, validating,
// and applying a Content Security Policy.
// FIXME: We should make the various directives serve only as state stores for the parsed policy and remove these functions.
// This class should traverse the directives, validating the policy, and applying it to the script execution context.
// Used by ContentSecurityPolicyMediaListDirective
void reportInvalidPluginTypes(const String&) const;
// Used by ContentSecurityPolicySourceList
void reportDirectiveAsSourceExpression(const String& directiveName, const String& sourceExpression) const;
void reportInvalidPathCharacter(const String& directiveName, const String& value, const char) const;
void reportInvalidSourceExpression(const String& directiveName, const String& source) const;
bool urlMatchesSelf(const URL&) const;
// Used by ContentSecurityPolicyDirectiveList
void reportDuplicateDirective(const String&) const;
void reportInvalidDirectiveValueCharacter(const String& directiveName, const String& value) const;
void reportInvalidSandboxFlags(const String&) const;
void reportInvalidReflectedXSS(const String&) const;
void reportInvalidDirectiveInReportOnlyMode(const String&) const;
void reportInvalidDirectiveInHTTPEquivMeta(const String&) const;
void reportMissingReportURI(const String&) const;
void reportUnsupportedDirective(const String&) const;
void reportViolation(const String& directiveText, const String& effectiveDirective, const String& consoleMessage, const URL& blockedURL, const Vector<String>& reportURIs, const String& header, const String& contextURL = String(), const WTF::OrdinalNumber& contextLine = WTF::OrdinalNumber::beforeFirst(), JSC::ExecState* = nullptr) const;
void reportBlockedScriptExecutionToInspector(const String& directiveText) const;
void enforceSandboxFlags(SandboxFlags sandboxFlags) { m_sandboxFlags |= sandboxFlags; }
// Used by ContentSecurityPolicySource
bool protocolMatchesSelf(const URL&) const;
private:
void logToConsole(const String& message, const String& contextURL = String(), const WTF::OrdinalNumber& contextLine = WTF::OrdinalNumber::beforeFirst(), JSC::ExecState* = nullptr) const;
void updateSourceSelf(const SecurityOrigin&);
void applyPolicyToScriptExecutionContext();
void didReceiveHeader(const String&, ContentSecurityPolicyHeaderType, ContentSecurityPolicy::PolicyFrom);
ScriptExecutionContext* m_scriptExecutionContext { nullptr };
std::unique_ptr<ContentSecurityPolicySource> m_selfSource;
String m_selfSourceProtocol;
CSPDirectiveListVector m_policies;
String m_lastPolicyEvalDisabledErrorMessage;
SandboxFlags m_sandboxFlags;
bool m_overrideInlineStyleAllowed { false };
};
}
#endif
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