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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsCSPContext_h___
#define nsCSPContext_h___
#include "mozilla/dom/nsCSPUtils.h"
#include "mozilla/dom/SecurityPolicyViolationEvent.h"
#include "mozilla/StaticPrefs_security.h"
#include "nsIChannel.h"
#include "nsIChannelEventSink.h"
#include "nsIContentSecurityPolicy.h"
#include "nsIInterfaceRequestor.h"
#include "nsIStreamListener.h"
#include "nsIWeakReferenceUtils.h"
#include "nsXPCOM.h"
#define NS_CSPCONTEXT_CONTRACTID "@mozilla.org/cspcontext;1"
// 09d9ed1a-e5d4-4004-bfe0-27ceb923d9ac
#define NS_CSPCONTEXT_CID \
{ \
0x09d9ed1a, 0xe5d4, 0x4004, { \
0xbf, 0xe0, 0x27, 0xce, 0xb9, 0x23, 0xd9, 0xac \
} \
}
class nsINetworkInterceptController;
class nsIEventTarget;
struct ConsoleMsgQueueElem;
namespace mozilla {
namespace dom {
class Element;
}
namespace ipc {
class ContentSecurityPolicy;
}
} // namespace mozilla
class nsCSPContext : public nsIContentSecurityPolicy {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSICONTENTSECURITYPOLICY
NS_DECL_NSISERIALIZABLE
protected:
virtual ~nsCSPContext();
public:
nsCSPContext();
static bool Equals(nsIContentSecurityPolicy* aCSP,
nsIContentSecurityPolicy* aOtherCSP);
// Init a CSP from a different CSP
nsresult InitFromOther(nsCSPContext* otherContext);
// Used to suppress errors and warnings produced by the parser.
// Use this when doing an one-off parsing of the CSP.
void SuppressParserLogMessages() { mSuppressParserLogMessages = true; }
/**
* SetRequestContextWithDocument() needs to be called before the
* innerWindowID is initialized on the document. Use this function
* to call back to flush queued up console messages and initialize
* the innerWindowID. Node, If SetRequestContextWithPrincipal() was
* called then we do not have a innerWindowID anyway and hence
* we can not flush messages to the correct console.
*/
void flushConsoleMessages();
void logToConsole(const char* aName, const nsTArray<nsString>& aParams,
const nsAString& aSourceName, const nsAString& aSourceLine,
uint32_t aLineNumber, uint32_t aColumnNumber,
uint32_t aSeverityFlag);
/**
* Construct SecurityPolicyViolationEventInit structure.
*
* @param aBlockedURI
* A nsIURI: the source of the violation.
* @param aOriginalUri
* The original URI if the blocked content is a redirect, else null
* @param aViolatedDirective
* the directive that was violated (string).
* @param aSourceFile
* name of the file containing the inline script violation
* @param aScriptSample
* a sample of the violating inline script
* @param aLineNum
* source line number of the violation (if available)
* @param aColumnNum
* source column number of the violation (if available)
* @param aViolationEventInit
* The output
*/
nsresult GatherSecurityPolicyViolationEventData(
nsIURI* aBlockedURI, const nsACString& aBlockedString,
nsIURI* aOriginalURI, const nsAString& aViolatedDirective,
uint32_t aViolatedPolicyIndex, const nsAString& aSourceFile,
const nsAString& aScriptSample, uint32_t aLineNum, uint32_t aColumnNum,
mozilla::dom::SecurityPolicyViolationEventInit& aViolationEventInit);
nsresult SendReports(
const mozilla::dom::SecurityPolicyViolationEventInit& aViolationEventInit,
uint32_t aViolatedPolicyIndex);
nsresult FireViolationEvent(
mozilla::dom::Element* aTriggeringElement,
nsICSPEventListener* aCSPEventListener,
const mozilla::dom::SecurityPolicyViolationEventInit&
aViolationEventInit);
enum BlockedContentSource {
eUnknown,
eInline,
eEval,
eSelf,
eWasmEval,
};
nsresult AsyncReportViolation(
mozilla::dom::Element* aTriggeringElement,
nsICSPEventListener* aCSPEventListener, nsIURI* aBlockedURI,
BlockedContentSource aBlockedContentSource, nsIURI* aOriginalURI,
const nsAString& aViolatedDirective, const nsAString& aEffectiveDirective,
uint32_t aViolatedPolicyIndex, const nsAString& aObserverSubject,
const nsAString& aSourceFile, bool aReportSample,
const nsAString& aScriptSample, uint32_t aLineNum, uint32_t aColumnNum);
// Hands off! Don't call this method unless you know what you
// are doing. It's only supposed to be called from within
// the principal destructor to avoid a tangling pointer.
void clearLoadingPrincipal() { mLoadingPrincipal = nullptr; }
nsWeakPtr GetLoadingContext() { return mLoadingContext; }
static uint32_t ScriptSampleMaxLength() {
return std::max(
mozilla::StaticPrefs::security_csp_reporting_script_sample_max_length(),
0);
}
void AddIPCPolicy(const mozilla::ipc::ContentSecurityPolicy& aPolicy);
void SerializePolicies(
nsTArray<mozilla::ipc::ContentSecurityPolicy>& aPolicies);
private:
bool ShouldThrottleReport(
const mozilla::dom::SecurityPolicyViolationEventInit&
aViolationEventInit);
bool permitsInternal(CSPDirective aDir,
mozilla::dom::Element* aTriggeringElement,
nsICSPEventListener* aCSPEventListener,
nsILoadInfo* aLoadInfo, nsIURI* aContentLocation,
nsIURI* aOriginalURIIfRedirect, bool aSpecific,
bool aSendViolationReports,
bool aSendContentLocationInViolationReports);
// helper to report inline script/style violations
void reportInlineViolation(CSPDirective aDirective,
mozilla::dom::Element* aTriggeringElement,
nsICSPEventListener* aCSPEventListener,
const nsAString& aNonce, bool aReportSample,
const nsAString& aSample,
const nsAString& aViolatedDirective,
const nsAString& aEffectiveDirective,
uint32_t aViolatedPolicyIndex,
uint32_t aLineNumber, uint32_t aColumnNumber);
nsString mReferrer;
uint64_t mInnerWindowID; // used for web console logging
bool mSkipAllowInlineStyleCheck; // used to allow Devtools to edit styles
// When deserializing an nsCSPContext instance, we initially just keep the
// policies unparsed. We will only reconstruct actual CSP policy instances
// when there's an attempt to use the CSP. Given a better way to serialize/
// deserialize individual nsCSPPolicy objects, this performance
// optimization could go away.
nsTArray<mozilla::ipc::ContentSecurityPolicy> mIPCPolicies;
nsTArray<nsCSPPolicy*> mPolicies;
nsCOMPtr<nsIURI> mSelfURI;
nsCOMPtr<nsILoadGroup> mCallingChannelLoadGroup;
nsWeakPtr mLoadingContext;
nsCOMPtr<nsIPrincipal> mLoadingPrincipal;
bool mSuppressParserLogMessages = false;
// helper members used to queue up web console messages till
// the windowID becomes available. see flushConsoleMessages()
nsTArray<ConsoleMsgQueueElem> mConsoleMsgQueue;
bool mQueueUpMessages;
nsCOMPtr<nsIEventTarget> mEventTarget;
mozilla::TimeStamp mSendReportLimitSpanStart;
uint32_t mSendReportLimitCount = 1;
bool mWarnedAboutTooManyReports = false;
};
// Class that listens to violation report transmission and logs errors.
class CSPViolationReportListener : public nsIStreamListener {
public:
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_ISUPPORTS
public:
CSPViolationReportListener();
protected:
virtual ~CSPViolationReportListener();
};
// The POST of the violation report (if it happens) should not follow
// redirects, per the spec. hence, we implement an nsIChannelEventSink
// with an object so we can tell XHR to abort if a redirect happens.
class CSPReportRedirectSink final : public nsIChannelEventSink,
public nsIInterfaceRequestor {
public:
NS_DECL_NSICHANNELEVENTSINK
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_ISUPPORTS
public:
CSPReportRedirectSink();
void SetInterceptController(
nsINetworkInterceptController* aInterceptController);
protected:
virtual ~CSPReportRedirectSink();
private:
nsCOMPtr<nsINetworkInterceptController> mInterceptController;
};
#endif /* nsCSPContext_h___ */
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