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86d87ef93e
ChannelClassifierService notifies "urlclassifier-before-block-channel"
event when a channel is going to be blocked by protection features.
It also provides an API for receivers to "unblock" the channel.
Sample usage:
this.service = Cc["@mozilla.org/url-classifier/channel-classifier-service;1"].getService(
Ci.nsIChannelClassifierService
);
if (this.service) {
this.service.addListener({
observe(aSubject, aTopic, aData) {
switch (aTopic) {
case "urlclassifier-before-block-channel":
let channel = aSubject.QueryInterface(Ci.nsIUrlClassifierBlockedChannel);
channel.unblock();
break;
}
},
})
}
Differential Revision: https://phabricator.services.mozilla.com/D76836
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set expandtab ts=2 sw=2 sts=2 cin: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_net_ChannelClassifierService_h
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#define mozilla_net_ChannelClassifierService_h
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#include "nsIChannelClassifierService.h"
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#include "mozilla/net/UrlClassifierCommon.h"
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namespace mozilla {
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namespace net {
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enum class ChannelBlockDecision {
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Blocked,
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Unblocked,
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};
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class UrlClassifierBlockedChannel final
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: public nsIUrlClassifierBlockedChannel {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIURLCLASSIFIERBLOCKEDCHANNEL
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explicit UrlClassifierBlockedChannel(nsIChannel* aChannel);
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bool IsUnblocked() const {
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return mDecision != ChannelBlockDecision::Blocked;
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}
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void SetReason(const nsACString& aFeatureName, const nsACString& aTableName);
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protected:
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~UrlClassifierBlockedChannel() = default;
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private:
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nsCOMPtr<nsIChannel> mChannel;
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ChannelBlockDecision mDecision;
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uint8_t mReason;
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nsCString mTables;
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};
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class ChannelClassifierService final : public nsIChannelClassifierService {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSICHANNELCLASSIFIERSERVICE
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friend class UrlClassifierBlockedChannel;
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static already_AddRefed<nsIChannelClassifierService> GetSingleton();
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static ChannelBlockDecision OnBeforeBlockChannel(
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nsIChannel* aChannel, const nsACString& aFeatureName,
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const nsACString& aTableName);
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nsresult OnBeforeBlockChannel(nsIChannel* aChannel,
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const nsACString& aFeatureName,
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const nsACString& aTableName,
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ChannelBlockDecision& aDecision);
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bool HasListener() const { return !mListeners.IsEmpty(); }
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private:
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ChannelClassifierService();
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~ChannelClassifierService() = default;
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nsTArray<nsCOMPtr<nsIObserver>> mListeners;
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};
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} // namespace net
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} // namespace mozilla
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#endif // mozilla_net_ChannelClassifierService_h
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