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+/* -*- Mode: C++; tab-width: 2; 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/. */
+
+#include "nsISupports.idl"
+
+%{ C++
+#include "nsString.h"
+%}
+
+interface nsILoadGroup;
+
+typedef unsigned long nsLoadFlags;
+
+/**
+ * nsIRequest
+ */
+[scriptable, uuid(ef6bfbd2-fd46-48d8-96b7-9f8f0fd387fe)]
+interface nsIRequest : nsISupports
+{
+ /**
+ * The name of the request. Often this is the URI of the request.
+ */
+ readonly attribute AUTF8String name;
+
+ /**
+ * Indicates whether the request is pending. nsIRequest::isPending is
+ * true when there is an outstanding asynchronous event that will make
+ * the request no longer be pending. Requests do not necessarily start
+ * out pending; in some cases, requests have to be explicitly initiated
+ * (e.g. nsIChannel implementations are only pending once asyncOpen
+ * returns successfully).
+ *
+ * Requests can become pending multiple times during their lifetime.
+ *
+ * @return TRUE if the request has yet to reach completion.
+ * @return FALSE if the request has reached completion (e.g., after
+ * OnStopRequest has fired).
+ * @note Suspended requests are still considered pending.
+ */
+ boolean isPending();
+
+ /**
+ * The error status associated with the request.
+ */
+ readonly attribute nsresult status;
+
+ /**
+ * Cancels the current request. This will close any open input or
+ * output streams and terminate any async requests. Users should
+ * normally pass NS_BINDING_ABORTED, although other errors may also
+ * be passed. The error passed in will become the value of the
+ * status attribute.
+ *
+ * Implementations must not send any notifications (e.g. via
+ * nsIRequestObserver) synchronously from this function. Similarly,
+ * removal from the load group (if any) must also happen asynchronously.
+ *
+ * Requests that use nsIStreamListener must not call onDataAvailable
+ * anymore after cancel has been called.
+ *
+ * @param aStatus the reason for canceling this request.
+ *
+ * NOTE: most nsIRequest implementations expect aStatus to be a
+ * failure code; however, some implementations may allow aStatus to
+ * be a success code such as NS_OK. In general, aStatus should be
+ * a failure code.
+ */
+ void cancel(in nsresult aStatus);
+
+ /**
+ * Suspends the current request. This may have the effect of closing
+ * any underlying transport (in order to free up resources), although
+ * any open streams remain logically opened and will continue delivering
+ * data when the transport is resumed.
+ *
+ * Calling cancel() on a suspended request must not send any
+ * notifications (such as onstopRequest) until the request is resumed.
+ *
+ * NOTE: some implementations are unable to immediately suspend, and
+ * may continue to deliver events already posted to an event queue. In
+ * general, callers should be capable of handling events even after
+ * suspending a request.
+ */
+ void suspend();
+
+ /**
+ * Resumes the current request. This may have the effect of re-opening
+ * any underlying transport and will resume the delivery of data to
+ * any open streams.
+ */
+ void resume();
+
+ /**
+ * The load group of this request. While pending, the request is a
+ * member of the load group. It is the responsibility of the request
+ * to implement this policy.
+ */
+ attribute nsILoadGroup loadGroup;
+
+ /**
+ * The load flags of this request. Bits 0-15 are reserved.
+ *
+ * When added to a load group, this request's load flags are merged with
+ * the load flags of the load group.
+ */
+ attribute nsLoadFlags loadFlags;
+
+ /**
+ * Mask defining the bits reserved for nsIRequest LoadFlags
+ */
+ const unsigned long LOAD_REQUESTMASK = 0xFFFF;
+
+ /**************************************************************************
+ * Listed below are the various load flags which may be or'd together.
+ */
+
+ /**
+ * No special load flags:
+ */
+ const unsigned long LOAD_NORMAL = 0;
+
+ /**
+ * Do not deliver status notifications to the nsIProgressEventSink and
+ * do not block the loadgroup from completing (should this load belong to one).
+ * Note: Progress notifications will still be delivered.
+ */
+ const unsigned long LOAD_BACKGROUND = 1 << 0;
+
+ /**
+ * This flag marks the request as being made to load the data for an html
+ * <object> tag. This means that the LOAD_DOCUMENT_URI flag may be set after
+ * the channel has been provided with the MIME type.
+ */
+ const unsigned long LOAD_HTML_OBJECT_DATA = 1 << 1;
+
+ /**
+ * This flag marks the request as belonging to a document that requires access
+ * to the document.cookies API.
+ */
+ const unsigned long LOAD_DOCUMENT_NEEDS_COOKIE = 1 << 2;
+
+ cenum TRRMode : 32 {
+ TRR_DEFAULT_MODE = 0,
+ TRR_DISABLED_MODE = 1,
+ TRR_FIRST_MODE = 2,
+ TRR_ONLY_MODE = 3
+ };
+
+ /**
+ * These methods encode/decode the TRR mode to/from the loadFlags.
+ * Helper methods Get/SetTRRModeImpl are provided so implementations don't
+ * need to duplicate code.
+ *
+ * Requests with TRR_DEFAULT_MODE will use the mode indicated by the pref
+ * - see network.trr.mode in all.js
+ * Requests with TRR_DISABLED_MODE will always use native DNS, even if the
+ * pref is set to mode3 (TRR-only).
+ * Requests with TRR_FIRST_MODE will first use TRR then fallback to regular
+ * DNS, unless TRR is disabled by setting the pref to mode5, parental
+ * control being enabled, or the domain being in the exclusion list.
+ * Requests with TRR_ONLY_MODE will only use TRR, unless not allowed by
+ * the same conditions mentioned above.
+ */
+ nsIRequest_TRRMode getTRRMode();
+ void setTRRMode(in nsIRequest_TRRMode mode);
+
+ %{C++
+ inline TRRMode GetTRRMode() {
+ TRRMode mode = TRR_DEFAULT_MODE;
+ GetTRRMode(&mode);
+ return mode;
+ }
+
+ inline nsresult GetTRRModeImpl(nsIRequest::TRRMode* aTRRMode) {
+ NS_ENSURE_ARG_POINTER(aTRRMode);
+ nsLoadFlags flags = nsIRequest::LOAD_NORMAL;
+ nsresult rv = GetLoadFlags(&flags);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ *aTRRMode = static_cast<nsIRequest::TRRMode>(
+ (flags & nsIRequest::LOAD_TRR_MASK) >> 3);
+ return NS_OK;
+ }
+
+ inline nsresult SetTRRModeImpl(nsIRequest::TRRMode aTRRMode) {
+ MOZ_ASSERT(aTRRMode <= 3, "invalid value");
+ nsLoadFlags flags = nsIRequest::LOAD_NORMAL;
+ nsresult rv = GetLoadFlags(&flags);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ flags = (flags & ~nsIRequest::LOAD_TRR_MASK) | (aTRRMode << 3);
+ return SetLoadFlags(flags);
+ }
+ %}
+
+ /**
+ * These two bits encode the TRR mode.
+ * Do not get/set manually, rather use the getTRRMode/setTRRMode methods.
+ */
+ const unsigned long LOAD_TRR_MASK = (1 << 3) | (1 << 4);
+ const unsigned long LOAD_TRR_DISABLED_MODE = 1 << 3;
+ const unsigned long LOAD_TRR_FIRST_MODE = 1 << 4;
+ const unsigned long LOAD_TRR_ONLY_MODE = (1 << 3) | (1 << 4);
+
+ void cancelWithReason(in nsresult aStatus, in ACString aReason);
+ attribute ACString canceledReason;
+
+ %{C++
+ protected:
+ nsCString mCanceledReason;
+
+ public:
+ inline nsresult SetCanceledReasonImpl(const nsACString& aReason) {
+ if (mCanceledReason.IsEmpty()) {
+ mCanceledReason.Assign(aReason);
+ }
+
+ return NS_OK;
+ }
+
+ inline nsresult CancelWithReasonImpl(nsresult aStatus,
+ const nsACString& aReason) {
+ SetCanceledReasonImpl(aReason);
+ return Cancel(aStatus);
+ }
+
+ inline nsresult GetCanceledReasonImpl(nsACString& aReason) {
+ aReason.Assign(mCanceledReason);
+ return NS_OK;
+ }
+ %}
+
+ /**
+ * This is used for a temporary workaround for a web-compat issue. The flag is
+ * only set on CORS preflight request to allowed sending client certificates
+ * on a connection for an anonymous request.
+ */
+ const long LOAD_ANONYMOUS_ALLOW_CLIENT_CERT = 1 << 5;
+
+ /**************************************************************************
+ * The following flags control the flow of data into the cache.
+ */
+
+ /**
+ * This flag prevents caching of any kind. It does not, however, prevent
+ * cached content from being used to satisfy this request.
+ */
+ const unsigned long INHIBIT_CACHING = 1 << 7;
+
+ /**
+ * This flag prevents caching on disk (or other persistent media), which
+ * may be needed to preserve privacy.
+ */
+ const unsigned long INHIBIT_PERSISTENT_CACHING = 1 << 8;
+
+ /**************************************************************************
+ * The following flags control what happens when the cache contains data
+ * that could perhaps satisfy this request. They are listed in descending
+ * order of precidence.
+ */
+
+ /**
+ * Force an end-to-end download of content data from the origin server.
+ * This flag is used for a shift-reload.
+ */
+ const unsigned long LOAD_BYPASS_CACHE = 1 << 9;
+
+ /**
+ * Attempt to force a load from the cache, bypassing ALL validation logic
+ * (note: this is stronger than VALIDATE_NEVER, which still validates for
+ * certain conditions).
+ *
+ * If the resource is not present in cache, it will be loaded from the
+ * network. Combine this flag with LOAD_ONLY_FROM_CACHE if you wish to
+ * perform cache-only loads without validation checks.
+ *
+ * This flag is used when browsing via history. It is not recommended for
+ * normal browsing as it may likely violate reasonable assumptions made by
+ * the server and confuse users.
+ */
+ const unsigned long LOAD_FROM_CACHE = 1 << 10;
+
+ /**
+ * The following flags control the frequency of cached content validation
+ * when neither LOAD_BYPASS_CACHE or LOAD_FROM_CACHE are set. By default,
+ * cached content is automatically validated if necessary before reuse.
+ *
+ * VALIDATE_ALWAYS forces validation of any cached content independent of
+ * its expiration time (unless it is https with Cache-Control: immutable)
+ *
+ * VALIDATE_NEVER disables validation of cached content, unless it arrived
+ * with the "Cache: no-store" header, or arrived via HTTPS with the
+ * "Cache: no-cache" header.
+ *
+ * VALIDATE_ONCE_PER_SESSION disables validation of expired content,
+ * provided it has already been validated (at least once) since the start
+ * of this session.
+ *
+ * NOTE TO IMPLEMENTORS:
+ * These flags are intended for normal browsing, and they should therefore
+ * not apply to content that must be validated before each use. Consider,
+ * for example, a HTTP response with a "Cache-control: no-cache" header.
+ * According to RFC2616, this response must be validated before it can
+ * be taken from a cache. Breaking this requirement could result in
+ * incorrect and potentially undesirable side-effects.
+ */
+ const unsigned long VALIDATE_ALWAYS = 1 << 11;
+ const unsigned long VALIDATE_NEVER = 1 << 12;
+ const unsigned long VALIDATE_ONCE_PER_SESSION = 1 << 13;
+
+ /**
+ * When set, this flag indicates that no user-specific data should be added
+ * to the request when opened. This means that things like authorization
+ * tokens or cookie headers should not be added.
+ */
+ const unsigned long LOAD_ANONYMOUS = 1 << 14;
+
+ /**
+ * When set, this flag indicates that caches of network connections,
+ * particularly HTTP persistent connections, should not be used.
+ * Use this together with LOAD_INITIAL_DOCUMENT_URI as otherwise it has no
+ * effect.
+ */
+ const unsigned long LOAD_FRESH_CONNECTION = 1 << 15;
+
+ // Note that all flags are taken, the rest of the flags
+ // are located in nsIChannel and nsICachingChannel
+};