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Notifications: Improve notification delivery (#213)
* Add notification extension * Add keychain group
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ArtemisNotificationExtension/ArtemisNotificationExtension.entitlements
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|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | ||
| <plist version="1.0"> | ||
| <dict> | ||
| <key>keychain-access-groups</key> | ||
| <array> | ||
| <string>$(AppIdentifierPrefix)de.tum.cit.ase.artemis</string> | ||
| </array> | ||
| </dict> | ||
| </plist> |
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| @@ -0,0 +1,13 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | ||
| <plist version="1.0"> | ||
| <dict> | ||
| <key>NSExtension</key> | ||
| <dict> | ||
| <key>NSExtensionPointIdentifier</key> | ||
| <string>com.apple.usernotifications.service</string> | ||
| <key>NSExtensionPrincipalClass</key> | ||
| <string>$(PRODUCT_MODULE_NAME).NotificationService</string> | ||
| </dict> | ||
| </dict> | ||
| </plist> |
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| // | ||
| // NotificationService.swift | ||
| // ArtemisNotificationExtension | ||
| // | ||
| // Created by Anian Schleyer on 14.11.24. | ||
| // Copyright © 2024 TUM. All rights reserved. | ||
| // | ||
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| import PushNotifications | ||
| import UserNotifications | ||
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| class NotificationService: UNNotificationServiceExtension { | ||
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| private var contentHandler: ((UNNotificationContent) -> Void)? | ||
| private var bestAttemptContent: UNMutableNotificationContent? | ||
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| override func didReceive(_ request: UNNotificationRequest, | ||
| withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) { | ||
| self.contentHandler = contentHandler | ||
| bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent) | ||
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| guard var bestAttemptContent else { | ||
| contentHandler(request.content) | ||
| return | ||
| } | ||
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| // Decrypt notification and deliver it | ||
| let payload = bestAttemptContent.userInfo | ||
| guard let payloadString = payload["payload"] as? String, | ||
| let initVector = payload["iv"] as? String else { | ||
| return | ||
| } | ||
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| Task { | ||
| bestAttemptContent = await PushNotificationHandler | ||
| .extractNotification(from: payloadString, iv: initVector) ?? bestAttemptContent | ||
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| contentHandler(bestAttemptContent) | ||
| } | ||
| } | ||
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| override func serviceExtensionTimeWillExpire() { | ||
| // Called just before the extension will be terminated by the system. | ||
| // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used. | ||
| if let contentHandler, let bestAttemptContent { | ||
| contentHandler(bestAttemptContent) | ||
| } | ||
| } | ||
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| } |