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gecko-dev/caps/nsIPrincipal.idl

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 representation
* of the principals Origin
*
* May be called from any thread.
*/
[noscript] readonly attribute ACString asciiOrigin;
/**
* 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);
/**
* 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();
}
%}
};
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