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/* 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/. */
interface LoadInfo;
interface MozChannel;
interface RemoteTab;
interface URI;
interface nsISupports;
/**
* Load types that correspond to the external types in nsIContentPolicy.idl.
* Please also update that IDL when updating this list.
*/
enum MozContentPolicyType {
"main_frame",
"sub_frame",
"stylesheet",
"script",
"image",
"object",
"object_subrequest",
"xmlhttprequest",
"fetch",
"xslt",
"ping",
"beacon",
"xml_dtd",
"font",
"media",
"websocket",
"csp_report",
"imageset",
"web_manifest",
"speculative",
"other"
};
/**
* String versions of CLASSIFIED_* tracking flags from nsIClassifiedChannel.idl
*/
enum MozUrlClassificationFlags {
"fingerprinting",
"fingerprinting_content",
"cryptomining",
"cryptomining_content",
"tracking",
"tracking_ad",
"tracking_analytics",
"tracking_social",
"tracking_content",
"socialtracking",
"socialtracking_facebook",
"socialtracking_linkedin",
"socialtracking_twitter",
"any_basic_tracking",
"any_strict_tracking",
"any_social_tracking"
};
/**
* A thin wrapper around nsIChannel and nsIHttpChannel that allows JS
* callers to access them without XPConnect overhead.
*/
[ChromeOnly, Exposed=Window]
interface ChannelWrapper : EventTarget {
/**
* Returns the wrapper instance for the given channel. The same wrapper is
* always returned for a given channel.
*/
static ChannelWrapper get(MozChannel channel);
/**
* Returns the wrapper instance for the given channel. The same wrapper is
* always returned for a given channel.
*/
static ChannelWrapper? getRegisteredChannel(unsigned long long aChannelId,
WebExtensionPolicy extension,
RemoteTab? remoteTab);
/**
* A unique ID for for the requests which remains constant throughout the
* redirect chain.
*/
[Constant, StoreInSlot]
readonly attribute unsigned long long id;
// Not technically pure, since it's backed by a weak reference, but if JS
// has a reference to the previous value, we can depend on it not being
// collected.
[Pure]
attribute MozChannel? channel;
/**
* Cancels the request with the given nsresult status code.
*
* The optional reason parameter should be one of the BLOCKING_REASON
* constants from nsILoadInfo.idl
*/
[Throws]
void cancel(unsigned long result, optional unsigned long reason = 0);
/**
* Redirects the wrapped HTTP channel to the given URI. For other channel
* types, this method will throw. The redirect is an internal redirect, and
* the behavior is the same as nsIHttpChannel.redirectTo.
*/
[Throws]
void redirectTo(URI url);
/**
* Requests an upgrade of the HTTP channel to a secure request. For other channel
* types, this method will throw. The redirect is an internal redirect, and
* the behavior is the same as nsIHttpChannel.upgradeToSecure. Setting this
* flag is only effective during the WebRequest.onBeforeRequest in
* Web Extensions, calling this at any other point during the request will
* have no effect. Setting this flag in addition to calling redirectTo
* results in the redirect happening rather than the upgrade request.
*/
[Throws]
void upgradeToSecure();
/**
* Suspends the underlying channel.
*/
[Throws]
void suspend();
/**
* Resumes (un-suspends) the underlying channel. The profilerText parameter
* is only used to annotate profiles.
*/
[Throws]
void resume(ByteString profileText);
/**
* The content type of the request, usually as read from the Content-Type
* header. This should be used in preference to the header to determine the
* content type of the channel.
*/
[Pure]
attribute ByteString contentType;
/**
* For HTTP requests, the request method (e.g., GET, POST, HEAD). For other
* request types, returns an empty string.
*/
[Cached, Pure]
readonly attribute ByteString method;
/**
* For requests with LoadInfo, the content policy type that corresponds to
* the request. For requests without LoadInfo, returns "other".
*/
[Cached, Pure]
readonly attribute MozContentPolicyType type;
/**
* When true, the request is currently suspended by the wrapper. When false,
* the request is not suspended by the wrapper, but may still be suspended
* by another caller.
*/
[Pure]
readonly attribute boolean suspended;
/**
* The final URI of the channel (as returned by NS_GetFinalChannelURI) after
* any redirects have been processed.
*/
[Cached, Pure]
readonly attribute URI finalURI;
/**
* The string version of finalURI (but cheaper to access than
* finalURI.spec).
*/
[Cached, Pure]
readonly attribute DOMString finalURL;
/**
* Returns true if the request matches the given request filter, and the
* given extension has permission to access it.
*/
boolean matches(optional MozRequestFilter filter = {},
optional WebExtensionPolicy? extension = null,
optional MozRequestMatchOptions options = {});
/**
* Register's this channel as traceable by the given add-on when accessed
* via the process of the given RemoteTab.
*/
void registerTraceableChannel(WebExtensionPolicy extension, RemoteTab? remoteTab);
/**
* The current HTTP status code of the request. This will be 0 if a response
* has not yet been received, or if the request is not an HTTP request.
*/
[Cached, Pure]
readonly attribute unsigned long statusCode;
/**
* The HTTP status line for the request (e.g., "HTTP/1.0 200 Success"). This
* will be an empty string if a response has not yet been received, or if
* the request is not an HTTP request.
*/
[Cached, Pure]
readonly attribute ByteString statusLine;
/**
* If the request has failed or been canceled, an opaque string representing
* the error. For requests that failed at the NSS layer, this is an NSS
* error message. For requests that failed for any other reason, it is the
* name of an nsresult error code. For requests which haven't failed, this
* is null.
*
* This string is used in the error message when notifying extension
* webRequest listeners of failure. The documentation specifically states
* that this value MUST NOT be parsed, and is only meant to be displayed to
* humans, but we all know how that works in real life.
*/
[Cached, Pure]
readonly attribute DOMString? errorString;
/**
* Dispatched when the channel is closed with an error status. Check
* errorString for the error details.
*/
attribute EventHandler onerror;
/**
* Checks the request's current status and dispatches an error event if the
* request has failed and one has not already been dispatched.
*/
void errorCheck();
/**
* Dispatched when the channel begins receiving data.
*/
attribute EventHandler onstart;
/**
* Dispatched when the channel has finished receiving data.
*/
attribute EventHandler onstop;
/**
* Information about the proxy server which is handling this request, or
* null if the request is not proxied.
*/
[Cached, Frozen, GetterThrows, Pure]
readonly attribute MozProxyInfo? proxyInfo;
/**
* For HTTP requests, the IP address of the remote server handling the
* request. For other request types, returns null.
*/
[Cached, Pure]
readonly attribute ByteString? remoteAddress;
/**
* The LoadInfo object for this channel, if available. Null for channels
* without load info, until support for those is removed.
*/
[Cached, Pure]
readonly attribute LoadInfo? loadInfo;
/**
* True if this load was triggered by a system caller. This currently always
* false if the request has no LoadInfo or is a top-level document load.
*/
[Cached, Pure]
readonly attribute boolean isSystemLoad;
/**
* The URL of the principal that triggered this load. This is equivalent to
* the LoadInfo's triggeringPrincipal, and will only ever be null for
* requests without LoadInfo.
*/
[Cached, Pure]
readonly attribute ByteString? originURL;
/**
* The URL of the document loading the content for this request. This is
* equivalent to the LoadInfo's loadingPrincipal. This may only ever be null
* for top-level requests and requests without LoadInfo.
*/
[Cached, Pure]
readonly attribute ByteString? documentURL;
/**
* The URI version of originURL. Will be null only when originURL is null.
*/
[Pure]
readonly attribute URI? originURI;
/**
* The URI version of documentURL. Will be null only when documentURL is
* null.
*/
[Pure]
readonly attribute URI? documentURI;
/**
* True if extensions may modify this request. This is currently false only
* if the request belongs to a document which has access to the
* mozAddonManager API.
*/
[Cached, GetterThrows, Pure]
readonly attribute boolean canModify;
/**
* The BrowsingContext ID of the frame that the request belongs to, or 0 if it
* is a top-level load or does not belong to a document.
*/
[Cached, Constant]
readonly attribute long long frameId;
/**
* The BrowsingContext ID of the parent frame of the window that the request
* belongs to, 0 if that parent frame is the top-level frame, and -1 if the
* request belongs to a top-level frame.
*/
[Cached, Constant]
readonly attribute long long parentFrameId;
/**
* For cross-process requests, the <browser> or <iframe> element to which the
* content loading this request belongs. For requests that don't originate
* from a remote browser, this is null.
*
* This is not an Element because those are by default only exposed in
* Window, but we're exposed in System.
*/
[Cached, Pure]
readonly attribute nsISupports? browserElement;
/**
* Returns an array of objects that combine the url and frameId from the
* ancestorPrincipals and ancestorOuterWindowIDs on loadInfo.
* The immediate parent is the first entry, the last entry is always the top
* level frame. It will be an empty list for toplevel window loads and
* non-subdocument resource loads within a toplevel window. For the latter,
* originURL will provide information on what window is doing the load. It
* will be null if the request is not associated with a window (e.g. XHR with
* mozBackgroundRequest = true).
*/
[Cached, Frozen, GetterThrows, Pure]
readonly attribute sequence<MozFrameAncestorInfo>? frameAncestors;
/**
* For HTTP requests, returns an array of request headers which will be, or
* have been, sent with this request.
*
* For non-HTTP requests, throws NS_ERROR_UNEXPECTED.
*/
[Throws]
sequence<MozHTTPHeader> getRequestHeaders();
/**
* For HTTP requests: returns the value of the request header, null if not set.
*
* For non-HTTP requests, throws NS_ERROR_UNEXPECTED.
*/
[Throws]
ByteString? getRequestHeader(ByteString header);
/**
* For HTTP requests, returns an array of response headers which were
* received for this request, in the same format as returned by
* getRequestHeaders.
* Throws NS_ERROR_NOT_AVAILABLE if a response has not yet been received, or
* NS_ERROR_UNEXPECTED if the channel is not an HTTP channel.
*
* Note: The Content-Type header is handled specially. That header is
* usually not mutable after the request has been received, and the content
* type must instead be changed via the contentType attribute. If a caller
* attempts to set the Content-Type header via setRequestHeader, however,
* that value is assigned to the contentType attribute and its original
* string value is cached. That original value is returned in place of the
* actual Content-Type header.
*/
[Throws]
sequence<MozHTTPHeader> getResponseHeaders();
/**
* Sets the given request header to the given value, overwriting any
* previous value. Setting a header to a null string has the effect of
* removing it. If merge is true, then the passed value will be merged
* to any existing value that exists for the header. Otherwise, any prior
* value for the header will be overwritten. Merge is ignored for headers
* that cannot be merged.
*
* For non-HTTP requests, throws NS_ERROR_UNEXPECTED.
*/
[Throws]
void setRequestHeader(ByteString header,
ByteString value,
optional boolean merge = false);
/**
* Sets the given response header to the given value, overwriting any
* previous value. Setting a header to a null string has the effect of
* removing it. If merge is true, then the passed value will be merged
* to any existing value that exists for the header (e.g. handling multiple
* Set-Cookie headers). Otherwise, any prior value for the header will be
* overwritten. Merge is ignored for headers that cannot be merged.
*
* For non-HTTP requests, throws NS_ERROR_UNEXPECTED.
*
* Note: The content type header is handled specially by this function. See
* getResponseHeaders() for details.
*/
[Throws]
void setResponseHeader(ByteString header,
ByteString value,
optional boolean merge = false);
/**
* Provides the tracking classification data when it is available.
*/
[Cached, Frozen, GetterThrows, Pure]
readonly attribute MozUrlClassification? urlClassification;
/**
* Indicates if this response and its content window hierarchy is third
* party.
*/
[Cached, Constant]
readonly attribute boolean thirdParty;
/**
* The current bytes sent of the request. This will be 0 if a request has not
* sent yet, or if the request is not an HTTP request.
*/
[Cached, Pure]
readonly attribute unsigned long long requestSize;
/**
* The current bytes received of the response. This will be 0 if a response
* has not recieved yet, or if the request is not an HTTP response.
*/
[Cached, Pure]
readonly attribute unsigned long long responseSize;
};
/**
* Wrapper for first and third party tracking classification data.
*/
dictionary MozUrlClassification {
required sequence<MozUrlClassificationFlags> firstParty;
required sequence<MozUrlClassificationFlags> thirdParty;
};
/**
* Information about the proxy server handing a request. This is approximately
* equivalent to nsIProxyInfo.
*/
dictionary MozProxyInfo {
/**
* The hostname of the server.
*/
required ByteString host;
/**
* The TCP port of the server.
*/
required long port;
/**
* The type of proxy (e.g., HTTP, SOCKS).
*/
required ByteString type;
/**
* True if the proxy is responsible for DNS lookups.
*/
required boolean proxyDNS;
/**
* The authentication username for the proxy, if any.
*/
ByteString? username = null;
/**
* The timeout, in seconds, before the network stack will failover to the
* next candidate proxy server if it has not received a response.
*/
unsigned long failoverTimeout;
/**
* Any non-empty value will be passed directly as Proxy-Authorization header
* value for the CONNECT request attempt. However, this header set on the
* resource request itself takes precedence.
*/
ByteString? proxyAuthorizationHeader = null;
/**
* An optional key used for additional isolation of this proxy connection.
*/
ByteString? connectionIsolationKey = null;
};
/**
* MozFrameAncestorInfo combines loadInfo::AncestorPrincipals with
* loadInfo::AncestorOuterWindowIDs for easier access in the WebRequest API.
*
* url represents the parent of the loading window.
* frameId is the outerWindowID for the parent of the loading window.
*
* For further details see nsILoadInfo.idl and Document::AncestorPrincipals.
*/
dictionary MozFrameAncestorInfo {
required ByteString url;
required unsigned long long frameId;
};
/**
* Represents an HTTP request or response header.
*/
dictionary MozHTTPHeader {
/**
* The case-insensitive, non-case-normalized header name.
*/
required ByteString name;
/**
* The header value.
*/
required ByteString value;
};
/**
* An object used for filtering requests.
*/
dictionary MozRequestFilter {
/**
* If present, the request only matches if its `type` attribute matches one
* of the given types.
*/
sequence<MozContentPolicyType>? types = null;
/**
* If present, the request only matches if its finalURI matches the given
* match pattern set.
*/
MatchPatternSet? urls = null;
/**
* If present, the request only matches if the loadInfo privateBrowsingId matches
* against the given incognito value.
*/
boolean? incognito = null;
};
dictionary MozRequestMatchOptions {
/**
* True if we're matching for the proxy portion of a proxied request.
*/
boolean isProxy = false;
};