gecko-dev/caps/nsIPrincipal.idl

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2012-05-21 15:12:37 +04:00
/* 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/. */
/* Defines the abstract interface for a principal. */
#include "nsIContentSecurityPolicy.idl"
#include "nsISerializable.idl"
#include "nsIAboutModule.idl"
#include "nsIReferrerInfo.idl"
interface nsIChannel;
#include "mozIDOMWindow.idl"
%{C++
struct JSPrincipals;
#include "nsCOMPtr.h"
#include "nsTArray.h"
#include "nsString.h"
#include "mozilla/DebugOnly.h"
namespace mozilla {
class OriginAttributes;
}
/**
* Some methods have a fast path for the case when we're comparing a principal
* to itself. The situation may happen for example with about:blank documents.
*/
#define DECL_FAST_INLINE_HELPER(method_) \
inline bool method_(nsIPrincipal* aOther) \
{ \
mozilla::DebugOnly<bool> val = false; \
MOZ_ASSERT_IF(this == aOther, \
NS_SUCCEEDED(method_(aOther, &val)) && val); \
\
bool retVal = false; \
return \
this == aOther || \
(NS_SUCCEEDED(method_(aOther, &retVal)) && retVal); \
}
%}
interface nsIURI;
webidl WebExtensionPolicy;
[ptr] native JSContext(JSContext);
[ptr] native JSPrincipals(JSPrincipals);
[ref] native PrincipalArray(const nsTArray<nsCOMPtr<nsIPrincipal>>);
[ref] native const_OriginAttributes(const mozilla::OriginAttributes);
native ReferrerPolicy(mozilla::dom::ReferrerPolicy);
[scriptable, builtinclass, uuid(f75f502d-79fd-48be-a079-e5a7b8f80c8b)]
interface nsIPrincipal : nsISupports
{
/**
* Returns whether the other principal is equivalent to this principal.
* Principals are considered equal if they are the same principal, or
* they have the same origin.
*
* May be called from any thread.
*/
boolean equals(in nsIPrincipal other);
/**
* Returns whether the other principal is equivalent to this principal
* for permission purposes
* Matches {originAttributes ,equalsURIForPermission}
*
* May be called from any thread.
*/
boolean equalsForPermission(in nsIPrincipal other, in bool aExactHost);
/**
* Like equals, but takes document.domain changes into account.
*
* May be called from any thread, though document.domain may racily change
* during the comparison when called from off-main-thread.
*/
boolean equalsConsideringDomain(in nsIPrincipal other);
%{C++
DECL_FAST_INLINE_HELPER(Equals)
DECL_FAST_INLINE_HELPER(EqualsConsideringDomain)
%}
/*
* Returns whether the Principals URI is equal to the other URI
*
* May be called from any thread.
*/
boolean equalsURI(in nsIURI aOtherURI);
/**
* Returns a hash value for the principal.
*
* May be called from any thread.
*/
[notxpcom, nostdcall] readonly attribute unsigned long hashValue;
/**
* The principal URI to which this principal pertains. This is
* generally the document URI.
*
* May be called from any thread.
*/
[infallible] readonly attribute nsIURI URI;
/**
* The domain URI to which this principal pertains.
* This is null unless script successfully sets document.domain to our URI
* or a superdomain of our URI.
* Setting this has no effect on the URI.
* See https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy#Changing_origin
*
* The getter may be called from any thread, but may only be set on the main thread.
*/
[noscript] attribute nsIURI domain;
/**
* Returns whether the other principal is equal to or weaker than this
* principal. Principals are equal if they are the same object or they
* have the same origin.
*
* Thus a principal always subsumes itself.
*
* The system principal subsumes itself and all other principals.
*
* A null principal (corresponding to an unknown, hence assumed minimally
* privileged, security context) is not equal to any other principal
* (including other null principals), and therefore does not subsume
* anything but itself.
*
* May be called from any thread.
*/
boolean subsumes(in nsIPrincipal other);
/**
* Same as the previous method, subsumes(), but takes document.domain into
* account.
*
* May be called from any thread, though document.domain may racily change
* during the comparison when called from off-main-thread.
*/
boolean subsumesConsideringDomain(in nsIPrincipal other);
/**
* Same as the subsumesConsideringDomain(), but ignores the first party
* domain in its originAttributes.
*
* May be called from any thread, though document.domain may racily change
* during the comparison when called from off-main-thread.
*/
boolean subsumesConsideringDomainIgnoringFPD(in nsIPrincipal other);
%{C++
DECL_FAST_INLINE_HELPER(Subsumes)
DECL_FAST_INLINE_HELPER(SubsumesConsideringDomain)
DECL_FAST_INLINE_HELPER(SubsumesConsideringDomainIgnoringFPD)
#undef DECL_FAST_INLINE_HELPER
%}
/**
* Checks whether this principal is allowed to load the network resource
* located at the given URI under the same-origin policy. This means that
* content principals are only allowed to load resources from the same
* domain, the system principal is allowed to load anything, and null
* principals can only load URIs where they are the principal. This is
* changed by the optional flag allowIfInheritsPrincipal (which defaults to
* false) which allows URIs that inherit their loader's principal.
*
* If the load is allowed this function does nothing. If the load is not
* allowed the function throws NS_ERROR_DOM_BAD_URI.
*
* NOTE: Other policies might override this, such as the Access-Control
* specification.
* NOTE: The 'domain' attribute has no effect on the behaviour of this
* function.
* NOTE: Main-Thread Only.
*
*
* @param uri The URI about to be loaded.
* @param allowIfInheritsPrincipal If true, the load is allowed if the
* loadee inherits the principal of the
* loader.
* @throws NS_ERROR_DOM_BAD_URI if the load is not allowed.
*/
void checkMayLoad(in nsIURI uri,
in boolean allowIfInheritsPrincipal);
/**
* Like checkMayLoad, but if returning an error will also report that error
* to the console, using the provided window id. The window id may be 0 to
* report to just the browser console, not web consoles.
*
* NOTE: Main-Thread Only.
*/
void checkMayLoadWithReporting(in nsIURI uri,
in boolean allowIfInheritsPrincipal,
in unsigned long long innerWindowID);
/**
* Checks if the provided URI is considered third-party to the
* URI of the principal.
* Returns true if the URI is third-party.
*
* May be called from any thread.
*
* @param uri - The URI to check
*/
boolean isThirdPartyURI(in nsIURI uri);
/**
* Checks if the provided principal is considered third-party to the
* URI of the Principal.
* Returns true if the principal is third-party.
*
* May be called from any thread.
*
* @param principal - The principal to check
*/
boolean isThirdPartyPrincipal(in nsIPrincipal principal);
/**
* Checks if the provided channel is considered third-party to the
* URI of the principal.
* Returns true if the channel is third-party.
* Returns false if the Principal is a System Principal
*
* NOTE: Main-Thread Only.
*
* @param channel - The Channel to check
*/
boolean isThirdPartyChannel(in nsIChannel channel);
/**
* A dictionary of the non-default origin attributes associated with this
* nsIPrincipal.
*
* Attributes are tokens that are taken into account when determining whether
* two principals are same-origin - if any attributes differ, the principals
* are cross-origin, even if the scheme, host, and port are the same.
* Attributes should also be considered for all security and bucketing decisions,
* even those which make non-standard comparisons (like cookies, which ignore
* scheme, or quotas, which ignore subdomains).
*
* If you're looking for an easy-to-use canonical stringification of the origin
* attributes, see |originSuffix| below.
*/
[implicit_jscontext]
readonly attribute jsval originAttributes;
// May be called from any thread.
[noscript, notxpcom, nostdcall, binaryname(OriginAttributesRef)]
const_OriginAttributes OriginAttributesRef();
/**
* A canonical representation of the origin for this principal. This
* consists of a base string (which, for content principals, is of the
* format scheme://host:port), concatenated with |originAttributes| (see
* below).
*
* We maintain the invariant that principalA.equals(principalB) if and only
* if principalA.origin == principalB.origin.
*
* May be called from any thread.
*/
readonly attribute ACString origin;
/**
* Returns an ASCII compatible serialization of the principal's origin, as
* specified by the whatwg HTML specification. If the principal does not
* have a host, the origin will be "null".
*
* https://html.spec.whatwg.org/multipage/browsers.html#ascii-serialisation-of-an-origin
*
* Note that this is different from `origin`, does not contain
* gecko-specific metadata like origin attributes, and should not be used
* for permissions or security checks.
*
* May be called from any thread.
*/
[noscript] readonly attribute ACString webExposedOriginSerialization;
/**
* Returns the "host:port" portion of the
* Principals URI, if any.
*
* May be called from any thread.
*/
readonly attribute ACString hostPort;
/**
* Returns the "host:port" portion of the
* Principals URI, if any.
*
* May be called from any thread.
*/
readonly attribute ACString asciiHost;
/**
* Returns the "host" portion of the
* Principals URI, if any.
*
* May be called from any thread.
*/
readonly attribute ACString host;
/**
* Returns the prePath of the principals uri
* follows the format scheme:
* "scheme://username:password@hostname:portnumber/"
*
* May be called from any thread.
*/
readonly attribute ACString prePath;
/**
* Returns the filePath of the principals uri. See nsIURI.
*
* May be called from any thread.
*/
readonly attribute ACString filePath;
/**
* Returns the ASCII Spec from the Principals URI.
* Might return the empty string, e.g. for the case of
* a SystemPrincipal or an EpxandedPrincipal.
*
* May be called from any thread.
*
* WARNING: DO NOT USE FOR SECURITY CHECKS.
* just for logging purposes!
*/
readonly attribute ACString asciiSpec;
/**
* Returns the Spec from the Principals URI.
* Might return the empty string, e.g. for the case of
* a SystemPrincipal or an EpxandedPrincipal.
*
* May be called from any thread.
*
* WARNING: Do not land new Code using, as this will be removed soon
*/
readonly attribute ACString spec;
/**
* Returns the Pre Path of the Principals URI with
* user:pass stripped for privacy and spoof prevention
*
* May be called from any thread.
*/
readonly attribute ACString exposablePrePath;
/**
* Returns the Spec of the Principals URI with
* user/pass/ref/query stripped for privacy and spoof prevention
*
* May be called from any thread.
*/
readonly attribute ACString exposableSpec;
/**
* Return the scheme of the principals URI
*
* May be called from any thread.
*/
readonly attribute ACString scheme;
/**
* Checks if the Principal's URI Scheme matches with the parameter
*
* May be called from any thread.
*
* @param scheme The scheme to be checked
*/
[infallible]
boolean schemeIs(in string scheme);
/*
* Checks if the Principal's URI is contained in the given Pref
*
* NOTE: Main-Thread Only.
*
* @param pref The pref to be checked
*/
[infallible]
boolean isURIInPrefList(in string pref);
/**
* Check if the Principal's URI is contained in the given list
*
* May be called from any thread.
*
* @param list The list to be checked
*/
[infallible]
boolean isURIInList(in ACString list);
Bug 1830070: Correctly apply RFP Checks to about: documents and deal with pop-ups r=smaug,necko-reviewers,emilio This patch has three parts to it: 1) Use NS_IsContentAccessibleAboutURI to ensure that only safe about: documents get exempted. With this change, we will no longer allow about:blank or about:srcdoc to be exempted base on URI. If they are to be exempted, it will need to be base on other information. 2) In Document::RecomputeResistFingerprinting we previously deferred to a Parent Document if we had one, and either the principals matched or we were a null principal. We will do the same thing, except we will also defer to our opener as well as the parent document. Now about:blank documents can be exempted. However, this deferral only works if the opener is same-process. For cross-process openers, we make the decision ourselves. We can make the wrong decision though. CookieJarSettings is inherited through iframes but it is _not_ inherited through popups. (Yet. There's some discussion there, but it's not implemented.) Conceptually; however, we do want CJS to inherit, and we do want RFP to inherit as well. Because a popup can collude with its opener to bypass RFP and Storage restrictions, we should propagate the CJS information. This does lead to an unusual situation: if you have exempted b.com, and a.com (which is not exempted) creates a popup for b.com then that popup will not be exempted. But an open tab for b.com would be. And it might be hard to tell those two apart, or why they behave differently. The third part of the patch: 3) In LoadInfo we want to populate information down from the opener to the popup. This is needed because otherwise a cross-origin popup will not defer to its opener (because in Fission they're in different processes) and will decide if it should be exempted itself. It's the CookieJarSettings object that prevents the cross-origin document from thinking it should be exempted - CJS tells it 'No, you're a child (either a subdocument or a popup) and if I say you don't get an exemption, you don't.' Finally, there is one more caveat: we can only defer to a parent document or opener if it still exists. A popup may outlive its opener. If that happens, and something induces a call to RecomputeResistFingerprinting, then (e.g.) an about:blank popup may lose an RFP exemption that it had received from its parent. This isn't expected to happen in practice - RecomputeResistFingerprinting is only called on document creation and pref changes I believe. It is not possible for a popup to _gain_ an exemption though, because even if the parent document is gone, the CJS lives on and restricts it. Differential Revision: https://phabricator.services.mozilla.com/D178866
2023-06-27 06:31:02 +03:00
/**
* Check if the Principal's URI is a content-accessible about: page
*
* May be called from any thread.
*/
[infallible]
boolean isContentAccessibleAboutURI();
/**
* Uses NS_Security Compare to determine if the
* other URI is same-origin as the uri of the Principal
*
* May be called from any thread.
*/
[infallible]
boolean isSameOrigin(in nsIURI otherURI);
/*
* Checks if the Principal is allowed to load the Provided file:// URI
* using NS_RelaxStrictFileOriginPolicy
*
* May be called from any thread.
*/
bool allowsRelaxStrictFileOriginPolicy(in nsIURI aURI);
/*
* Generates a Cache-Key for the Cors-Preflight Cache
*
* May be called from any thread.
*/
[noscript]
ACString getPrefLightCacheKey(in nsIURI aURI ,in bool aWithCredentials,
in const_OriginAttributes aOriginAttributes);
/*
* Checks if the Principals URI has first party storage access
* when loaded inside the provided 3rd party resource window.
* See also: ContentBlocking::ShouldAllowAccessFor
*
* NOTE: Main-Thread Only.
*/
bool hasFirstpartyStorageAccess(in mozIDOMWindow aWindow, out uint32_t rejectedReason);
/*
* Returns a Key for the LocalStorage Manager, used to
* check the Principals Origin Storage usage.
*
* May be called from any thread.
*/
readonly attribute ACString localStorageQuotaKey;
/**
* Implementation of
* https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy
*
* The value returned by this method feeds into the the Secure Context
* algorithm that determins the value of Window.isSecureContext and
* WorkerGlobalScope.isSecureContext.
*
* This method returns false instead of throwing upon errors.
*
* NOTE: Main-Thread Only.
*/
[infallible]
readonly attribute boolean isOriginPotentiallyTrustworthy;
/**
* NOTE: Main-Thread Only.
*/
[infallible]
readonly attribute boolean isLoopbackHost;
/**
* Returns the Flags of the Principals
* associated AboutModule, in case there is one.
*
* NOTE: Main-Thread Only.
*/
uint32_t getAboutModuleFlags();
/**
* Returns the Key to access the Principals
* Origin Local/Session Storage
*
* May be called from any thread.
*/
readonly attribute ACString storageOriginKey;
/**
* Creates and Returns a new ReferrerInfo with the
* Principals URI
*
* May be called from any thread.
*/
nsIReferrerInfo createReferrerInfo(in ReferrerPolicy aReferrerPolicy);
/**
* The base part of |origin| without the concatenation with |originSuffix|.
* This doesn't have the important invariants described above with |origin|,
* and as such should only be used for legacy situations.
*
* May be called from any thread.
*/
readonly attribute ACString originNoSuffix;
/**
* A string of the form ^key1=value1&key2=value2, where each pair represents
* an attribute with a non-default value. If all attributes have default
* values, this is the empty string.
*
* The value of .originSuffix is automatically serialized into .origin, so any
* consumers using that are automatically origin-attribute-aware. Consumers with
* special requirements must inspect and compare .originSuffix manually.
*
* May be called from any thread.
*/
readonly attribute AUTF8String originSuffix;
/**
* A canonical representation of the site-origin for this principal.
* This string has the same format as |origin| (see above). Two principals
* with differing |siteOrigin| values will never compare equal, even when
* considering domain mutations.
*
* For most principals, |siteOrigin| matches |origin| precisely. Only
* principals which allow mutating |domain|, such as ContentPrincipal,
* override the default implementation in BasePrincipal.
*
* May be called from any thread.
*/
readonly attribute ACString siteOrigin;
/**
* The base part of |siteOrigin| without the concatenation with
* |originSuffix|.
*
* May be called from any thread.
*/
readonly attribute ACString siteOriginNoSuffix;
/**
* The base domain of the principal URI to which this principal pertains
* (generally the document URI), handling null principals and
* non-hierarchical schemes correctly.
*
* May be called from any thread.
*/
readonly attribute ACString baseDomain;
/**
* Gets the ID of the add-on this principal belongs to.
*
* May be called from any thread.
*/
readonly attribute AString addonId;
/**
* Gets the WebExtensionPolicy of the add-on this principal belongs to.
*
* NOTE: Main-Thread Only.
*/
readonly attribute WebExtensionPolicy addonPolicy;
readonly attribute WebExtensionPolicy contentScriptAddonPolicy;
/**
* Gets the id of the user context this principal is inside. If this
* principal is inside the default userContext, this returns
* nsIScriptSecurityManager::DEFAULT_USER_CONTEXT_ID.
*
* May be called from any thread.
*/
[infallible] readonly attribute unsigned long userContextId;
/**
* Gets the id of the private browsing state of the context containing
* this principal. If the principal has a private browsing value of 0, it
* is not in private browsing.
*
* May be called from any thread.
*/
[infallible] readonly attribute unsigned long privateBrowsingId;
/**
* Returns true iff the principal is inside an isolated mozbrowser element.
* <xul:browser> is not considered to be a mozbrowser element.
* <iframe mozbrowser noisolation> does not count as isolated since
* isolation is disabled. Isolation can only be disabled if the
* containing document is chrome.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isInIsolatedMozBrowserElement;
/**
* Returns true iff this is a null principal (corresponding to an
* unknown, hence assumed minimally privileged, security context).
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isNullPrincipal;
/**
* Returns true iff this principal corresponds to a principal origin.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isContentPrincipal;
/**
* Returns true iff this is an expanded principal.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isExpandedPrincipal;
/**
* Returns true iff this is the system principal. C++ callers should use
* IsSystemPrincipal() instead of this scriptable accessor.
*
* May be called from any thread.
*/
readonly attribute boolean isSystemPrincipal;
/**
* Faster and nicer version callable from C++. Callers must include
* BasePrincipal.h, where it's implemented.
*
* May be called from any thread.
*/
%{C++
inline bool IsSystemPrincipal() const;
%}
/**
* Returns true iff the principal is either an addon principal or
* an expanded principal, which contains at least one addon principal.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isAddonOrExpandedAddonPrincipal;
%{C++
// MOZ_DBG support (threadsafe)
friend std::ostream& operator<<(std::ostream& aOut, const nsIPrincipal& aPrincipal) {
nsIPrincipal* principal = const_cast<nsIPrincipal*>(&aPrincipal);
nsAutoCString origin;
mozilla::DebugOnly<nsresult> rv = principal->GetOrigin(origin);
MOZ_ASSERT(NS_SUCCEEDED(rv));
return aOut << "nsIPrincipal { " << origin << " }";
}
%}
/**
* Returns true if the URI is an Onion URI.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isOnion;
/**
* Returns true if the Domain Policy allows js execution
* for the Principal's URI
*
* NOTE: Main-Thread Only.
*/
readonly attribute boolean isScriptAllowedByPolicy;
/**
* Returns true if the Principal can acess l10n
* features for the Provided DocumentURI
*
* NOTE: Main-Thread Only.
*/
boolean isL10nAllowed(in nsIURI aDocumentURI);
/**
* Returns a nsIPrincipal, with one less Subdomain Segment
* Returns `nullptr` if there are no more segments to remove.
*
* May be called from any thread.
*/
[infallible] readonly attribute nsIPrincipal nextSubDomainPrincipal;
/**
* Returns if the principal is for an IP address.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isIpAddress;
/**
* Returns if the principal is for a local IP address.
*
* May be called from any thread.
*/
[infallible] readonly attribute boolean isLocalIpAddress;
/**
* If this principal is a null principal, reconstruct the precursor
* principal which this null principal was derived from. This may be null,
* in which case this is not a null principal, there is no known precursor
* to this null principal, it was created by a privileged context, or there
* was a bugged origin in the precursor string.
*
* May be called from any thread.
*
* WARNING: Be careful when using this principal, as it is not part of the
* security properties of the null principal, and should NOT be used to
* grant a resource with a null principal access to resources from its
* precursor origin. This is only to be used for places where tracking how
* null principals were created is necessary.
*/
[infallible] readonly attribute nsIPrincipal precursorPrincipal;
};
/**
* If SystemPrincipal is too risky to use, but we want a principal to access
* more than one origin, ExpandedPrincipals letting us define an array of
* principals it subsumes. So script with an ExpandedPrincipals will gain
* same origin access when at least one of its principals it contains gained
* sameorigin acccess. An ExpandedPrincipal will be subsumed by the system
* principal, and by another ExpandedPrincipal that has all its principals.
* It is added for jetpack content-scripts to let them interact with the
* content and a well defined set of other domains, without the risk of
* leaking out a system principal to the content. See: Bug 734891
*/
[uuid(f3e177Df-6a5e-489f-80a7-2dd1481471d8)]
interface nsIExpandedPrincipal : nsISupports
{
/**
* An array of principals that the expanded principal subsumes.
*
* When an expanded principal is used as a triggering principal for a
* request that inherits a security context, one of its constitutent
* principals is inherited rather than the expanded principal itself. The
* last principal in the allowlist is the default principal to inherit.
*
* Note: this list is not reference counted, it is shared, so
* should not be changed and should only be used ephemerally.
*
* May be called from any thread.
*/
[noscript, notxpcom, nostdcall]
PrincipalArray AllowList();
/**
* Bug 1548468: Move CSP off ExpandedPrincipal.
*
* A Content Security Policy associated with this principal. Use this function
* to query the associated CSP with this principal.
*
* NOTE: Main-Thread Only.
*/
readonly attribute nsIContentSecurityPolicy csp;
%{ C++
inline already_AddRefed<nsIContentSecurityPolicy> GetCsp()
{
nsCOMPtr<nsIContentSecurityPolicy> result;
mozilla::DebugOnly<nsresult> rv = GetCsp(getter_AddRefs(result));
MOZ_ASSERT(NS_SUCCEEDED(rv));
return result.forget();
}
%}
};