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Remove Greaselion dependency from Rewards service
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173 changes: 173 additions & 0 deletions
173
browser/brave_rewards/creator_detection_script_injector.cc
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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) 2024 The Brave Authors. All rights reserved. | ||
| // 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 https://mozilla.org/MPL/2.0/. | ||
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| #include "brave/browser/brave_rewards/creator_detection_script_injector.h" | ||
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| #include <utility> | ||
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| #include "base/containers/fixed_flat_map.h" | ||
| #include "base/feature_list.h" | ||
| #include "base/functional/bind.h" | ||
| #include "base/strings/strcat.h" | ||
| #include "base/strings/utf_string_conversions.h" | ||
| #include "brave/browser/brave_rewards/rewards_util.h" | ||
| #include "brave/components/brave_rewards/common/features.h" | ||
| #include "brave/components/brave_rewards/common/pref_names.h" | ||
| #include "brave/components/brave_rewards/common/publisher_utils.h" | ||
| #include "brave/components/brave_rewards/resources/grit/creator_detection_generated.h" | ||
| #include "chrome/browser/profiles/profile.h" | ||
| #include "chrome/common/chrome_isolated_world_ids.h" | ||
| #include "components/prefs/pref_service.h" | ||
| #include "content/public/browser/render_frame_host.h" | ||
| #include "content/public/common/content_client.h" | ||
| #include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h" | ||
| #include "ui/base/resource/resource_bundle.h" | ||
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| namespace brave_rewards { | ||
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| namespace { | ||
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| constexpr auto kScriptMap = base::MakeFixedFlatMap<std::string_view, int>( | ||
| {{"github.com", IDR_CREATOR_DETECTION_GITHUB_BUNDLE_JS}, | ||
| {"www.github.com", IDR_CREATOR_DETECTION_GITHUB_BUNDLE_JS}, | ||
| {"gist.github.com", IDR_CREATOR_DETECTION_GITHUB_BUNDLE_JS}, | ||
| {"reddit.com", IDR_CREATOR_DETECTION_REDDIT_BUNDLE_JS}, | ||
| {"www.reddit.com", IDR_CREATOR_DETECTION_REDDIT_BUNDLE_JS}, | ||
| {"twitch.tv", IDR_CREATOR_DETECTION_TWITCH_BUNDLE_JS}, | ||
| {"www.twitch.tv", IDR_CREATOR_DETECTION_TWITCH_BUNDLE_JS}, | ||
| {"twitter.com", IDR_CREATOR_DETECTION_TWITTER_BUNDLE_JS}, | ||
| {"x.com", IDR_CREATOR_DETECTION_TWITTER_BUNDLE_JS}, | ||
| {"vimeo.com", IDR_CREATOR_DETECTION_VIMEO_BUNDLE_JS}, | ||
| {"www.youtube.com", IDR_CREATOR_DETECTION_YOUTUBE_BUNDLE_JS}, | ||
| {"m.youtube.com", IDR_CREATOR_DETECTION_YOUTUBE_BUNDLE_JS}}); | ||
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| std::string LoadScriptResource(int id) { | ||
| auto& bundle = ui::ResourceBundle::GetSharedInstance(); | ||
| if (bundle.IsGzipped(id)) { | ||
| return bundle.LoadDataResourceString(id); | ||
| } | ||
| return std::string(bundle.GetRawDataResource(id)); | ||
| } | ||
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| std::optional<std::string> GetDetectionScript(content::RenderFrameHost* rfh) { | ||
| // Only run scripts for the main frame. | ||
| if (!rfh || !rfh->IsInPrimaryMainFrame()) { | ||
| return std::nullopt; | ||
| } | ||
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| // Only run scripts if the creator detection feature is enabled. | ||
| if (!base::FeatureList::IsEnabled( | ||
| features::kPlatformCreatorDetectionFeature)) { | ||
| return std::nullopt; | ||
| } | ||
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| auto* profile = Profile::FromBrowserContext(rfh->GetBrowserContext()); | ||
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| // Only run scripts if the Rewards service is available for this profile. | ||
| if (!IsSupportedForProfile(profile)) { | ||
| return std::nullopt; | ||
| } | ||
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| // Only run scripts if the user has enabled Brave Rewards. | ||
| if (!profile || !profile->GetPrefs()->GetBoolean(prefs::kEnabled)) { | ||
| return std::nullopt; | ||
| } | ||
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| // Only run scripts for known "media platform" sites. | ||
| GURL url = rfh->GetLastCommittedURL(); | ||
| if (!IsMediaPlatformURL(url)) { | ||
| return std::nullopt; | ||
| } | ||
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| // Only run scripts when there is an exact hostname match. | ||
| auto iter = kScriptMap.find(url.host_piece()); | ||
| if (iter == kScriptMap.end()) { | ||
| return std::nullopt; | ||
| } | ||
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| return LoadScriptResource(iter->second); | ||
| } | ||
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| } // namespace | ||
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| CreatorDetectionScriptInjector::CreatorDetectionScriptInjector() = default; | ||
| CreatorDetectionScriptInjector::~CreatorDetectionScriptInjector() = default; | ||
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| void CreatorDetectionScriptInjector::MaybeInjectScript( | ||
| content::RenderFrameHost* rfh) { | ||
| injector_.reset(); | ||
| injector_host_token_ = content::GlobalRenderFrameHostToken(); | ||
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| if (!rfh) { | ||
| return; | ||
| } | ||
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| auto script_source = GetDetectionScript(rfh); | ||
| if (!script_source) { | ||
| return; | ||
| } | ||
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| injector_host_token_ = rfh->GetGlobalFrameToken(); | ||
| rfh->GetRemoteAssociatedInterfaces()->GetInterface(&injector_); | ||
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| // Execute the detection script. It must set `braveRewards.detectCreator` to a | ||
| // function. That function will be called by `DetectCreator`. | ||
| ExecuteScript(script_source.value(), base::DoNothing()); | ||
| } | ||
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| void CreatorDetectionScriptInjector::DetectCreator( | ||
| content::RenderFrameHost* rfh, | ||
| DetectCreatorCallback callback) { | ||
| if (!rfh || rfh->GetGlobalFrameToken() != injector_host_token_ || | ||
| !injector_.is_bound()) { | ||
| std::move(callback).Run(std::nullopt); | ||
| return; | ||
| } | ||
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| // Call the detection function set up by the detection script. | ||
| ExecuteScript( | ||
| "braveRewards.detectCreator()", | ||
| base::BindOnce(&CreatorDetectionScriptInjector::OnCreatorDetected, | ||
| weak_factory_.GetWeakPtr(), std::move(callback))); | ||
| } | ||
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| void CreatorDetectionScriptInjector::ExecuteScript( | ||
| std::string_view script, | ||
| ExecuteScriptCallback callback) { | ||
| CHECK(injector_.is_bound()); | ||
| injector_->RequestAsyncExecuteScript( | ||
| ISOLATED_WORLD_ID_BRAVE_INTERNAL, base::UTF8ToUTF16(script), | ||
| blink::mojom::UserActivationOption::kDoNotActivate, | ||
| blink::mojom::PromiseResultOption::kAwait, std::move(callback)); | ||
| } | ||
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| void CreatorDetectionScriptInjector::OnCreatorDetected( | ||
| DetectCreatorCallback callback, | ||
| base::Value value) { | ||
| Result result; | ||
| if (auto* dict = value.GetIfDict()) { | ||
| if (auto* id = dict->FindString("id")) { | ||
| result.id = *id; | ||
| } | ||
| if (auto* name = dict->FindString("name")) { | ||
| result.name = *name; | ||
| } | ||
| if (auto* url = dict->FindString("url")) { | ||
| result.url = *url; | ||
| } | ||
| if (auto* image_url = dict->FindString("imageURL")) { | ||
| result.image_url = *image_url; | ||
| } | ||
| } | ||
| std::move(callback).Run(std::move(result)); | ||
| } | ||
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| CreatorDetectionScriptInjector::Result::Result() = default; | ||
| CreatorDetectionScriptInjector::Result::~Result() = default; | ||
| CreatorDetectionScriptInjector::Result::Result(const Result&) = default; | ||
| CreatorDetectionScriptInjector::Result& | ||
| CreatorDetectionScriptInjector::Result::operator=(const Result&) = default; | ||
|
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| } // namespace brave_rewards |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // Copyright (c) 2024 The Brave Authors. All rights reserved. | ||
| // 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 https://mozilla.org/MPL/2.0/. | ||
|
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| #ifndef BRAVE_BROWSER_BRAVE_REWARDS_CREATOR_DETECTION_SCRIPT_INJECTOR_H_ | ||
| #define BRAVE_BROWSER_BRAVE_REWARDS_CREATOR_DETECTION_SCRIPT_INJECTOR_H_ | ||
|
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| #include <optional> | ||
| #include <string> | ||
| #include <string_view> | ||
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| #include "base/functional/callback.h" | ||
| #include "base/memory/weak_ptr.h" | ||
| #include "base/values.h" | ||
| #include "brave/components/script_injector/common/mojom/script_injector.mojom.h" | ||
| #include "content/public/browser/global_routing_id.h" | ||
| #include "mojo/public/cpp/bindings/associated_remote.h" | ||
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| namespace content { | ||
| class RenderFrameHost; | ||
| } | ||
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| namespace brave_rewards { | ||
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| // Responsible for detecting Brave creator information associated with media | ||
| // platform pages, using JS scripts that are injected into an isolated world. | ||
| class CreatorDetectionScriptInjector { | ||
| public: | ||
| CreatorDetectionScriptInjector(); | ||
| ~CreatorDetectionScriptInjector(); | ||
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| CreatorDetectionScriptInjector(const CreatorDetectionScriptInjector&) = | ||
| delete; | ||
| CreatorDetectionScriptInjector& operator=( | ||
| const CreatorDetectionScriptInjector&) = delete; | ||
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| // Injects creator detection scripts (if appropriate) into an isolated world | ||
| // associated with the specified render frame host. The scripts are expected | ||
| // to set up a JS function that will later be called by `DetectCreator`. | ||
| void MaybeInjectScript(content::RenderFrameHost* rfh); | ||
|
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| struct Result { | ||
| Result(); | ||
| ~Result(); | ||
| Result(const Result&); | ||
| Result& operator=(const Result&); | ||
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| std::string id; | ||
| std::string name; | ||
| std::string url; | ||
| std::string image_url; | ||
| }; | ||
|
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| using DetectCreatorCallback = base::OnceCallback<void(std::optional<Result>)>; | ||
|
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| // Runs the creator detection routine initialized by `MaybeInjectScript` and | ||
| // asynchrounously returns the detection result. Return `nullopt` if the | ||
| // detection routine was not invoked (e.g. because Rewards is not enabled or | ||
| // because there is no script for this page). Returns a `Result` with empty | ||
| // fields if there is not creator associated with the current page. Note that | ||
| // any of the `Result` fields may be empty if the detection script was unable | ||
| // to gather that information from the page. | ||
| void DetectCreator(content::RenderFrameHost* rfh, | ||
| DetectCreatorCallback callback); | ||
|
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| private: | ||
| using ExecuteScriptCallback = base::OnceCallback<void(base::Value)>; | ||
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| void ExecuteScript(std::string_view script, ExecuteScriptCallback callback); | ||
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| void OnCreatorDetected(DetectCreatorCallback callback, base::Value value); | ||
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| mojo::AssociatedRemote<script_injector::mojom::ScriptInjector> injector_; | ||
| content::GlobalRenderFrameHostToken injector_host_token_; | ||
| base::WeakPtrFactory<CreatorDetectionScriptInjector> weak_factory_{this}; | ||
| }; | ||
|
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| } // namespace brave_rewards | ||
|
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| #endif // BRAVE_BROWSER_BRAVE_REWARDS_CREATOR_DETECTION_SCRIPT_INJECTOR_H_ |
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