/* 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/. */
#include "nsISerializable.idl"
#include "nsIContentPolicy.idl"
interface nsIURI;
interface nsIEventTarget;
interface nsILoadInfo;
interface nsIPrincipal;
interface nsICSPEventListener;
webidl Element;
webidl Document;
/**
* nsIContentSecurityPolicy
* Describes an XPCOM component used to model and enforce CSPs . Instances of
* this class may have multiple policies within them , but there should only be
* one of these per document / principal .
*/
%{C++
class nsCSPPolicy;
namespace mozilla::dom {
struct CSPViolationData;
}
%}
[ptr] native CSPPolicyPtr(
const nsCSPPolicy);
native CSPViolationData(mozilla::dom::CSPViolationData&&);
[scriptable, builtinclass, uuid(
1 d632008-
6 c97-
48 ae-a51c-
16 e2daa0f4f6)]
interface nsIContentSecurityPolicy : nsISerializable
{
/**
* Directives supported by Content Security Policy . These are enums for
* the CSPDirective type .
* The NO_DIRECTIVE entry is used for checking default permissions and
* returning failure when asking CSP which directive to check .
*
* NOTE : When implementing a new directive , you will need to add it here but also
* add it to the CSPStrDirectives array in nsCSPUtils . h .
*/
cenum CSPDirective :
8 {
NO_DIRECTIVE =
0 ,
DEFAULT_SRC_DIRECTIVE =
1 ,
SCRIPT_SRC_DIRECTIVE =
2 ,
OBJECT_SRC_DIRECTIVE =
3 ,
STYLE_SRC_DIRECTIVE =
4 ,
IMG_SRC_DIRECTIVE =
5 ,
MEDIA_SRC_DIRECTIVE =
6 ,
FRAME_SRC_DIRECTIVE =
7 ,
FONT_SRC_DIRECTIVE =
8 ,
CONNECT_SRC_DIRECTIVE =
9 ,
REPORT_URI_DIRECTIVE =
10 ,
FRAME_ANCESTORS_DIRECTIVE =
11 ,
REFLECTED_XSS_DIRECTIVE =
12 ,
BASE_URI_DIRECTIVE =
13 ,
FORM_ACTION_DIRECTIVE =
14 ,
WEB_MANIFEST_SRC_DIRECTIVE =
15 ,
UPGRADE_IF_INSECURE_DIRECTIVE =
16 ,
CHILD_SRC_DIRECTIVE =
17 ,
BLOCK_ALL_MIXED_CONTENT =
18 ,
SANDBOX_DIRECTIVE =
19 ,
WORKER_SRC_DIRECTIVE =
20 ,
SCRIPT_SRC_ELEM_DIRECTIVE =
21 ,
SCRIPT_SRC_ATTR_DIRECTIVE =
22 ,
STYLE_SRC_ELEM_DIRECTIVE =
23 ,
STYLE_SRC_ATTR_DIRECTIVE =
24 ,
REQUIRE_TRUSTED_TYPES_FOR_DIRECTIVE =
25 ,
TRUSTED_TYPES_DIRECTIVE =
26 ,
REPORT_TO_DIRECTIVE =
27 ,
};
cenum RequireTrustedTypesForDirectiveState :
8 {
NONE =
0 ,
REPORT_ONLY =
1 ,
ENFORCE =
2 ,
};
/**
* Accessor method for a read - only string version of the policy at a given
* index .
*/
[binaryname(GetPolicyString)] AString getPolicy(in
unsigned long index);
/**
* Accessor method for a read - only pointer the policy object at a given
* index . Returns a null pointer if the index is larger than the current
* policy count .
*/
[noscript,notxpcom,nostdcall] CSPPolicyPtr GetPolicy(in
unsigned long index);
/**
* Returns the number of policies attached to this CSP instance . Useful with
* getPolicy ( ) .
*/
readonly attribute
unsigned long policyCount;
/**
* Returns whether this policy uses the directive upgrade - insecure - requests .
* Please note that upgrade - insecure - reqeusts also applies if the parent or
* including document ( context ) makes use of the directive .
*/
readonly attribute boolean upgradeInsecureRequests;
/**
* Returns whether this policy uses the directive block - all - mixed - content .
* Please note that block - all - mixed - content takes presedence in case the
* directive upgrade - insecure - requests is defined in the same policy and
* will therefore block all mixed content without even trying to perform
* an upgrade .
*/
readonly attribute boolean blockAllMixedContent;
/**
* Returns whether this policy enforces the frame - ancestors directive .
*/
readonly attribute boolean enforcesFrameAncestors;
/**
* Parse and install a CSP policy .
* @ param aPolicy
* String representation of the policy
* ( e . g . , header value , meta content )
* @ param reportOnly
* Should this policy affect content , script and style processing or
* just send reports if it is violated ?
* @ param deliveredViaMetaTag
* Indicates whether the policy was delivered via the meta tag .
*/
void appendPolicy(in AString policyString,
in boolean reportOnly,
in boolean deliveredViaMetaTag);
/**
* Indicate the global state for the require - trusted - types - for directives
* - NONE : No require - trusted - types - for directives .
* - REPORT_ONLY : At least one require - trusted - types - for directive , but all
* of them have " report " disposition .
* - ENFORCE : At least one require - trusted - types - for directive with " enforce "
* disposition .
*/
[infallible] readonly attribute nsIContentSecurityPolicy_RequireTrustedTypesForDire
ctiveState requireTrustedTypesForDirectiveState;
/*
* Whether this policy allows inline script or style .
*
* Reports when the policy forbids aContentOfPseudoScript , including
* potentially asynchronously firing a " securitypolicyviolation " event .
*
* @ param aContentPolicyType Either SCRIPT_SRC_ ( ELEM | ATTR ) _ DIRECTIVE or
* STYLE_SRC_ ( ELEM | ATTR ) _ DIRECTIVE .
* @ param aHasUnsafeHash Only hash this when the ' unsafe - hashes ' directive is
* also specified .
* @ param aNonce The nonce string to check against the policy .
* @ param aParserCreated If the script element was created by the HTML Parser
* @ param aTriggeringElement The script element of the inline resource to
* hash . It can be null .
* @ param aSourceText The content of the script or pseudo - script to compare
* to hash ( and compare to the hashes listed in the
* policy ) . For trusted inline scripts ( i . e . that don ' t
* need to go trough the Trusted Types default policy ) we
* retrieve the source text lazily for performance reasons
* ( see bug 1376651 ) and aSourceText is void .
* @ param aLineNumber The line number of the inline resource
* ( used for reporting )
* @ param aColumnNumber The column number of the inline resource
* ( used for reporting )
* @ return
* Whether or not the effects of the inline style should be allowed
* ( block the rules if false ) .
*/
boolean getAllowsInline(in nsIContentSecurityPolicy_CSPDirective aDirective,
in boolean aHasUnsafeHash,
in AString aNonce,
in boolean aParserCreated,
in Element aTriggeringElement,
in nsICSPEventListener aCSPEventListener,
in AString aSourceText,
in unsigned long aLineNumber,
in unsigned long aColumnNumber);
/**
* Whether this policy allows eval and eval - like functions
* such as setTimeout ( " code string " , time ) .
* @ param shouldReportViolations
* Whether or not the use of eval should be reported .
* This function returns " true " when violating report - only policies , but
* when any policy ( report - only or otherwise ) is violated ,
* shouldReportViolations is true as well .
* @ return
* Whether or not the effects of the eval call should be allowed
* ( block the call if false ) .
*/
boolean getAllowsEval(out boolean shouldReportViolations);
/**
* Whether this policy allows the evaluation ( and compilation ) of
* WASM code from functions like ` WebAssembly . compile ` .
* @ param shouldReportViolations
* Whether or not the use of WASM evaluation should be reported .
* This function returns " true " when violating report - only policies , but
* when any policy ( report - only or otherwise ) is violated ,
* shouldReportViolations is true as well .
* @ return
* Whether or not the effects of the WASM evaluation should be allowed
* ( block the call if false ) .
*/
boolean getAllowsWasmEval(out boolean shouldReportViolations);
/**
* Delegate method called by the service when the protected document is loaded .
* Returns the union of all the sandbox flags contained in CSP policies . This is the most
* restrictive interpretation of flags set in multiple policies .
* See nsSandboxFlags . h for the possible flags .
*
* @ return
* sandbox flags or SANDBOXED_NONE if no sandbox directive exists
*/
uint32_t getCSPSandboxFlags();
/**
* For each violated policy ( of type violationType ) , log policy violation on
* the Error Console and send a report to report - uris present in the violated
* policies .
*
* @ param violationType
* one of the VIOLATION_TYPE_ * constants , e . g . eval or wasm - eval
* @ param triggeringElement
* the element that triggers this CSP violation . It can be null .
* @ param sourceFile
* name of the source file containing the violation ( if available )
* @ param contentSample
* sample of the violating content ( to aid debugging )
* @ param lineNum
* source line number of the violation ( if available )
* @ param columnNum
* source column number of the violation ( if available )
* @ param aNonce
* ( optional ) If this is a nonce violation , include the nonce so we can
* recheck to determine which policies were violated and send the
* appropriate reports .
* @ param aContent
* ( optional ) If this is a hash violation , include contents of the inline
* resource in the question so we can recheck the hash in order to
* determine which policies were violated and send the appropriate
* reports .
*/
void logViolationDetails(in unsigned short violationType,
in Element triggeringElement,
in nsICSPEventListener aCSPEventListener,
in ACString sourceFile,
in AString scriptSample,
in int32_t lineNum,
in int32_t columnNum,
[optional] in AString nonce,
[optional] in AString content);
const unsigned short VIOLATION_TYPE_EVAL = 1 ;
const unsigned short VIOLATION_TYPE_WASM_EVAL = 2 ;
/**
* Log violation details for aCSPViolationData ' s directive . The directive is
* required to :
* - be one of the CSP directives corresponding to Trusted Types .
* - belong to the policy referrenced by aCSPViolationData .
* No check happens that the policy is indeed violated .
*
* Notifies observers , logs on the error console , sends a report ( with a code -
* sample ) to the directive ' s report - uris and may fire a violation event .
*
* @ param aCSPEventListener Should be null for Windows
* ( https : //html.spec.whatwg.org/multipage/nav-history-apis.html#window),
* and non - null for Workers .
*/
[noscript] void logTrustedTypesViolationDetailsUnchecked(
in CSPViolationData aCSPViolationData,
in AString aObserverSubject,
in nsICSPEventListener aCSPEventListener);
/**
* Called after the CSP object is created to fill in appropriate request
* context . Either use
* * aDocument ( preferred ) , or if no document is available , then provide
* * aPrincipal , aSelfURI , aReferrer , aInnerWindowId explicitly .
*/
[must_use] void setRequestContextWithDocument(in Document aDocument);
[must_use] void setRequestContextWithPrincipal(in nsIPrincipal aRequestPrincipal,
in nsIURI aSelfURI,
in ACString aReferrer,
in unsigned long long aInnerWindowId);
/**
* Get the various arguments needed to create a new request context for a CSP .
*/
[noscript, notxpcom, nostdcall] readonly attribute nsIPrincipal requestPrincipal;
[noscript, notxpcom, nostdcall] readonly attribute nsIURI selfURI;
[noscript] readonly attribute ACString referrer;
[noscript, notxpcom, nostdcall] readonly attribute unsigned long long innerWindowID;
/**
* Warning : Do not set that attribute unless you know exactly what you are doing !
*
* Primarily used to allow Devtools to edit inline styles !
*/
[noscript, notxpcom, nostdcall] attribute boolean skipAllowInlineStyleCheck;
/**
* Ensure we have a nsIEventTarget to use to label CSPReportSenderRunnable
*/
[noscript] void ensureEventTarget(in nsIEventTarget aEventTarget);
/**
* Verifies ancestry as permitted by the policy .
*
* NOTE : Calls to this may trigger violation reports when queried , so this
* value should not be cached .
*
* @ param aLoadInfo
* The loadinfo of the channel containing the protected resource
* @ return
* true if the frame ' s ancestors are all allowed by policy ( except for
* report - only policies , which will send reports and then return true
* here when violated ) .
*/
boolean permitsAncestry(in nsILoadInfo aLoadInfo);
/**
* Checks if a specific directive permits loading of a URI .
*
* @ param aTriggeringElement
* The element that triggers this CSP check . It can be null .
* @ param aURI
* The URI about to be loaded or used .
* @ param aDir
* The CSPDirective to query ( see above constants * _ DIRECTIVE ) .
* @ param aSpecific
* If " true " and the directive is specified to fall back to " default - src "
* when it ' s not explicitly provided , directivePermits will NOT try
* default - src when the specific directive is not used . Setting this to
* " false " allows CSP to fall back to default - src . This function
* behaves the same for both values of canUseDefault when querying
* directives that don ' t fall - back .
* @ param aSendViolationReports
* If ` true ` and the uri is not allowed then trigger violation reports .
* This should be ` false ` for caching or preloads .
* @ return
* Whether or not the provided URI is allowed by CSP under the given
* directive . ( block the pending operation if false ) .
*/
boolean permits(in Element aTriggeringElement,
in nsICSPEventListener aCSPEventListener,
in nsIURI aURI,
in nsIContentSecurityPolicy_CSPDirective aDir,
in boolean aSpecific,
in boolean aSendViolationReports);
/**
* Delegate method called by the service when sub - elements of the protected
* document are being loaded . Given a bit of information about the request ,
* decides whether or not the policy is satisfied .
*
* Calls to this may trigger violation reports when queried , so
* this value should not be cached .
*
* aOriginalURIIfRedirect must be passed only if this loading is the result
* of a redirect . In this case , aOriginalURIIfRedirect must be the original
* URL .
*/
short shouldLoad(in nsContentPolicyType aContentType,
in nsICSPEventListener aCSPEventListener,
in nsILoadInfo aLoadInfo,
in nsIURI aContentLocation,
in nsIURI aOriginalURIIfRedirect,
in boolean aSendViolationReports);
%{ C++
// nsIObserver topic to fire when the policy encounters a violation.
#define CSP_VIOLATION_TOPIC "csp-on-violate-policy"
%}
/**
* Returns the CSP in JSON notation .
*/
AString toJSON();
/**
* Ensure policies from IPC are read / parsed .
*/
[noscript] void EnsureIPCPoliciesRead();
};
typedef nsIContentSecurityPolicy_CSPDirective CSPDirective;
typedef nsIContentSecurityPolicy_RequireTrustedTypesForDirectiveState RequireTrustedTypesForDirectiveState;
/* Listener for security policy violation event */
[function, scriptable, uuid(c3163b14-3 a8f-46 dd-a4af-bd04680364cd)]
interface nsICSPEventListener : nsISupports
{
/**
* Notify of CSP violation event .
* @ param aJSON
* Represents SecurityPolicyViolationEventInit , serialized into JSON .
* See https : //w3c.github.io/webappsec-csp/#securitypolicyviolationevent
* @ param aReportGroupName
* The report group name of the endpoint that the report which can be constructed
* from aJSON should be sent to .
*/
void onCSPViolationEvent(in AString aJSON, in AString aReportGroupName);
};
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