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/*
* Copyright (C) 2011 Google, 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 COMPUTER, 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 "bindings/v8/ScriptState.h"
#include "core/dom/Document.h"
#include "core/dom/ExecutionContext.h"
#include "platform/network/ContentSecurityPolicyParsers.h"
#include "platform/network/HTTPParsers.h"
#include "platform/weborigin/ReferrerPolicy.h"
#include "wtf/HashSet.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/Vector.h"
#include "wtf/text/StringHash.h"
#include "wtf/text/TextPosition.h"
#include "wtf/text/WTFString.h"
namespace WTF {
class OrdinalNumber;
}
namespace WebCore {
class ContentSecurityPolicyResponseHeaders;
class CSPDirectiveList;
class DOMStringList;
class JSONObject;
class KURL;
class SecurityOrigin;
typedef int SandboxFlags;
typedef Vector<OwnPtr<CSPDirectiveList> > CSPDirectiveListVector;
class ContentSecurityPolicy : public RefCounted<ContentSecurityPolicy> {
WTF_MAKE_FAST_ALLOCATED;
public:
// CSP 1.0 Directives
static const char ConnectSrc[];
static const char DefaultSrc[];
static const char FontSrc[];
static const char FrameSrc[];
static const char ImgSrc[];
static const char MediaSrc[];
static const char ObjectSrc[];
static const char ReportURI[];
static const char Sandbox[];
static const char ScriptSrc[];
static const char StyleSrc[];
// CSP 1.1 Directives
static const char BaseURI[];
static const char ChildSrc[];
static const char FormAction[];
static const char FrameAncestors[];
static const char PluginTypes[];
static const char ReflectedXSS[];
static const char Referrer[];
static PassRefPtr<ContentSecurityPolicy> create(ExecutionContext* executionContext)
{
return adoptRef(new ContentSecurityPolicy(executionContext));
}
~ContentSecurityPolicy();
void copyStateFrom(const ContentSecurityPolicy*);
enum ReportingStatus {
SendReport,
SuppressReport
};
void didReceiveHeaders(const ContentSecurityPolicyResponseHeaders&);
void didReceiveHeader(const String&, ContentSecurityPolicyHeaderType, ContentSecurityPolicyHeaderSource);
// These functions are wrong because they assume that there is only one header.
// FIXME: Replace them with functions that return vectors.
const String& deprecatedHeader() const;
ContentSecurityPolicyHeaderType deprecatedHeaderType() const;
bool allowJavaScriptURLs(const String& contextURL, const WTF::OrdinalNumber& contextLine, ReportingStatus = SendReport) const;
bool allowInlineEventHandlers(const String& contextURL, const WTF::OrdinalNumber& contextLine, ReportingStatus = SendReport) const;
bool allowInlineScript(const String& contextURL, const WTF::OrdinalNumber& contextLine, ReportingStatus = SendReport) const;
bool allowInlineStyle(const String& contextURL, const WTF::OrdinalNumber& contextLine, ReportingStatus = SendReport) const;
bool allowEval(ScriptState* = 0, ReportingStatus = SendReport) const;
bool allowPluginType(const String& type, const String& typeAttribute, const KURL&, ReportingStatus = SendReport) const;
bool allowScriptFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowObjectFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowChildFrameFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowImageFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowStyleFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowFontFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowMediaFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowConnectToSource(const KURL&, ReportingStatus = SendReport) const;
bool allowFormAction(const KURL&, ReportingStatus = SendReport) const;
bool allowBaseURI(const KURL&, ReportingStatus = SendReport) const;
bool allowAncestors(LocalFrame*, ReportingStatus = SendReport) const;
bool allowChildContextFromSource(const KURL&, ReportingStatus = SendReport) const;
bool allowWorkerContextFromSource(const KURL&, ReportingStatus = SendReport) const;
// The nonce and hash allow functions are guaranteed to not have any side
// effects, including reporting.
bool allowScriptNonce(const String& nonce) const;
bool allowStyleNonce(const String& nonce) const;
bool allowScriptHash(const String& source) const;
bool allowStyleHash(const String& source) const;
void usesScriptHashAlgorithms(uint8_t ContentSecurityPolicyHashAlgorithm);
void usesStyleHashAlgorithms(uint8_t ContentSecurityPolicyHashAlgorithm);
ReflectedXSSDisposition reflectedXSSDisposition() const;
ReferrerPolicy referrerPolicy() const;
bool didSetReferrerPolicy() const;
void setOverrideAllowInlineStyle(bool);
bool isActive() const;
void reportDirectiveAsSourceExpression(const String& directiveName, const String& sourceExpression) const;
void reportDuplicateDirective(const String&) const;
void reportInvalidDirectiveValueCharacter(const String& directiveName, const String& value) const;
void reportInvalidPathCharacter(const String& directiveName, const String& value, const char) const;
void reportInvalidPluginTypes(const String&) const;
void reportInvalidSandboxFlags(const String&) const;
void reportInvalidSourceExpression(const String& directiveName, const String& source) const;
void reportInvalidReflectedXSS(const String&) const;
void reportMissingReportURI(const String&) const;
void reportUnsupportedDirective(const String&) const;
void reportInvalidInReportOnly(const String&) const;
void reportInvalidReferrer(const String&) const;
void reportReportOnlyInMeta(const String&) const;
void reportMetaOutsideHead(const String&) const;
void reportViolation(const String& directiveText, const String& effectiveDirective, const String& consoleMessage, const KURL& blockedURL, const Vector<KURL>& reportURIs, const String& header);
void reportBlockedScriptExecutionToInspector(const String& directiveText) const;
const KURL url() const;
KURL completeURL(const String&) const;
SecurityOrigin* securityOrigin() const;
void enforceSandboxFlags(SandboxFlags) const;
String evalDisabledErrorMessage() const;
bool experimentalFeaturesEnabled() const;
static bool shouldBypassMainWorld(ExecutionContext*);
static bool isDirectiveName(const String&);
ExecutionContext* executionContext() const { return m_executionContext; }
Document* document() const { return m_executionContext->isDocument() ? toDocument(m_executionContext) : 0; }
private:
explicit ContentSecurityPolicy(ExecutionContext*);
void logToConsole(const String& message) const;
void addPolicyFromHeaderValue(const String&, ContentSecurityPolicyHeaderType, ContentSecurityPolicyHeaderSource);
bool shouldSendViolationReport(const String&) const;
void didSendViolationReport(const String&);
ExecutionContext* m_executionContext;
bool m_overrideInlineStyleAllowed;
CSPDirectiveListVector m_policies;
HashSet<unsigned, AlreadyHashed> m_violationReportsSent;
// We put the hash functions used on the policy object so that we only need
// to calculate a hash once and then distribute it to all of the directives
// for validation.
uint8_t m_scriptHashAlgorithmsUsed;
uint8_t m_styleHashAlgorithmsUsed;
};
}
#endif
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