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[Duckplayer] 8. Age restricted videos (#3111)
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Task/Issue URL: https://app.asana.com/0/0/1207791658630142/f

Description:
Implements restricted video link handling
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@afterxleep
afterxleep authored Jul 20, 2024
1 parent ba71738 commit b908108
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Showing 2 changed files with 61 additions and 28 deletions.
86 changes: 58 additions & 28 deletions DuckDuckGo/DuckPlayer/DuckPlayerNavigationHandler.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ final class DuckPlayerNavigationHandler {
static let httpMethod = "GET"
static let watchInYoutubePath = "openInYoutube"
static let watchInYoutubeVideoParameter = "v"
static let urlInternalReferrer = "embeds_referring_euri"
}

init(duckPlayer: DuckPlayerProtocol) {
Expand Down Expand Up @@ -96,6 +97,20 @@ final class DuckPlayerNavigationHandler {
performNavigation(duckPlayerRequest, responseHTML: html, webView: webView)
}

func hasEmbedsReferringEuriParameter(urlString: String) -> Bool {
guard let url = URL(string: urlString),
let components = URLComponents(url: url, resolvingAgainstBaseURL: false),
let queryItems = components.queryItems else {
return false
}

for queryItem in queryItems where queryItem.name == Constants.urlInternalReferrer {
return true
}

return false
}

}

extension DuckPlayerNavigationHandler: DuckNavigationHandling {
Expand All @@ -107,10 +122,18 @@ extension DuckPlayerNavigationHandler: DuckNavigationHandling {

os_log("DP: Handling DuckPlayer Player Navigation for %s", log: .duckPlayerLog, type: .debug, navigationAction.request.url?.absoluteString ?? "")

guard let url = navigationAction.request.url else { return }

// Handle Youtube internal links like "Age restricted" and "Copyright restricted" videos
// These should not be handled by DuckPlayer
if url.isYoutubeVideo,
hasEmbedsReferringEuriParameter(urlString: url.absoluteString) {
return
}

// Handle Open in Youtube Links
// duck://player/openInYoutube?v=12345
if let url = navigationAction.request.url,
url.scheme == "duck" {
if url.scheme == "duck" {
let urlComponents = URLComponents(url: url, resolvingAgainstBaseURL: false)

if urlComponents?.path == "/\(Constants.watchInYoutubePath)",
Expand All @@ -127,8 +150,7 @@ extension DuckPlayerNavigationHandler: DuckNavigationHandling {
}

// Daily Unique View Pixel
if let url = navigationAction.request.url,
url.isDuckPlayer,
if url.isDuckPlayer,
duckPlayer.settings.mode != .disabled {
let setting = duckPlayer.settings.mode == .enabled ? Constants.duckPlayerAlwaysString : Constants.duckPlayerDefaultString
DailyPixel.fire(pixel: Pixel.Event.duckPlayerDailyUniqueView, withAdditionalParameters: [Constants.settingsKey: setting])
Expand All @@ -141,8 +163,7 @@ extension DuckPlayerNavigationHandler: DuckNavigationHandling {
}

// If DuckPlayer is Enabled or in ask mode, render the video
if let url = navigationAction.request.url,
url.isDuckURLScheme,
if url.isDuckURLScheme,
duckPlayer.settings.mode == .enabled || duckPlayer.settings.mode == .alwaysAsk,
!isDuckPlayerTemporarilyDisabled {
let newRequest = Self.makeDuckPlayerRequest(from: URLRequest(url: url))
Expand All @@ -154,8 +175,7 @@ extension DuckPlayerNavigationHandler: DuckNavigationHandling {
}

// DuckPlayer is disabled, so we redirect to the video in YouTube
if let url = navigationAction.request.url,
let (videoID, timestamp) = url.youtubeVideoParams,
if let (videoID, timestamp) = url.youtubeVideoParams,
duckPlayer.settings.mode == .disabled {
os_log("DP: is Disabled. We should load original video for %s", log: .duckPlayerLog, type: .debug)
handleURLChange(url: URL.youtube(videoID, timestamp: timestamp), webView: webView)
Expand All @@ -167,17 +187,25 @@ extension DuckPlayerNavigationHandler: DuckNavigationHandling {
// such as changes triggered via JS
@MainActor
func handleURLChange(url: URL?, webView: WKWebView) {

guard let url else { return }

// Handle Youtube internal links like "Age restricted" and "Copyright restricted" videos
// These should not be handled by DuckPlayer
if url.isYoutubeVideo,
hasEmbedsReferringEuriParameter(urlString: url.absoluteString) {
return
}

// Do not handle the URL if the video was just handled
if let url = url,
url.isYoutubeVideo || url.isDuckPlayer,
if url.isYoutubeVideo || url.isDuckPlayer,
let (videoID, _) = url.youtubeVideoParams,
lastHandledVideoID == videoID,
!isDuckPlayerTemporarilyDisabled {
return
}

if let url = url, url.isYoutubeVideo,
if url.isYoutubeVideo,
!url.isDuckPlayer,
let (videoID, timestamp) = url.youtubeVideoParams,
duckPlayer.settings.mode == .enabled || duckPlayer.settings.mode == .alwaysAsk {
Expand Down Expand Up @@ -211,36 +239,38 @@ extension DuckPlayerNavigationHandler: DuckNavigationHandling {
func handleDecidePolicyFor(_ navigationAction: WKNavigationAction,
webView: WKWebView) {

guard let url = navigationAction.request.url else { return }

// Handle Youtube internal links like "Age restricted" and "Copyright restricted" videos
// These should not be handled by DuckPlayer
if url.isYoutubeVideo,
hasEmbedsReferringEuriParameter(urlString: url.absoluteString) {
return
}

// Do not handle the URL if the video was just handled
if let url = navigationAction.request.url,
url.isYoutubeVideo || url.isDuckPlayer,
let (videoID, _) = url.youtubeVideoParams,
if url.isYoutubeVideo || url.isDuckPlayer,
let (videoID, timestamp) = url.youtubeVideoParams,
lastHandledVideoID == videoID,
!isDuckPlayerTemporarilyDisabled {
return
}


// Pixel for Views From SERP
if let url = navigationAction.request.url,
navigationAction.request.allHTTPHeaderFields?[Constants.refererHeader] == Constants.SERPURL,
if navigationAction.request.allHTTPHeaderFields?[Constants.refererHeader] == Constants.SERPURL,
duckPlayer.settings.mode == .enabled, !url.isDuckPlayer {
Pixel.fire(pixel: Pixel.Event.duckPlayerViewFromSERP, debounce: 2)
}

// Pixel for views from Other Sites
if let url = navigationAction.request.url,
navigationAction.request.allHTTPHeaderFields?[Constants.refererHeader] != Constants.SERPURL,
duckPlayer.settings.mode == .enabled, !url.isDuckPlayer {
} else {
Pixel.fire(pixel: Pixel.Event.duckPlayerViewFromOther, debounce: 2)
}

if let url = navigationAction.request.url,
url.isYoutubeVideo,
!url.isDuckPlayer, let (videoID, timestamp) = url.youtubeVideoParams,
duckPlayer.settings.mode == .enabled || duckPlayer.settings.mode == .alwaysAsk {
os_log("DP: Handling decidePolicy for Duck Player with %s", log: .duckPlayerLog, type: .debug, url.absoluteString)
handleURLChange(url: URL.duckPlayer(videoID, timestamp: timestamp), webView: webView)
if url.isYoutubeVideo,
!url.isDuckPlayer,
let (videoID, timestamp) = url.youtubeVideoParams,
duckPlayer.settings.mode == .enabled || duckPlayer.settings.mode == .alwaysAsk {
os_log("DP: Handling decidePolicy for Duck Player with %s", log: .duckPlayerLog, type: .debug, url.absoluteString)
handleURLChange(url: URL.duckPlayer(videoID, timestamp: timestamp), webView: webView)
return
}
}
Expand Down
3 changes: 3 additions & 0 deletions DuckDuckGo/TabViewController.swift
View file
Original file line number Diff line number Diff line change
Expand Up @@ -408,6 +408,9 @@ class TabViewController: UIViewController {
resetNavigationBar()
delegate?.tabDidRequestShowingMenuHighlighter(tab: self)
tabModel.viewed = true

// Link DuckPlayer to current Tab
duckPlayerNavigationHandler.duckPlayer.setHostViewController(self)
}

override func buildActivities() -> [UIActivity] {
Expand Down

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