Fix icons for older macOS versions

NearbyShare/NearbyConnection.swift

@@ -415,11 +415,7 @@ class NearbyConnection {
     }
     
     static func hkdf(inputKeyMaterial: SymmetricKey, salt: Data, info: Data, outputByteCount: Int) -> SymmetricKey {
-        if #available(macOS 11.0, *) {
-            return HKDF<SHA256>.deriveKey(inputKeyMaterial: inputKeyMaterial, salt: salt, info: info, outputByteCount: outputByteCount)
-        } else {
-            return SymmetricKey(data: hkdfExpand(prk: hkdfExtract(salt: salt, ikm: inputKeyMaterial.withUnsafeBytes { Data(bytes: $0.baseAddress!, count: $0.count) }), info: info, length: outputByteCount))
-        }
+        return HKDF<SHA256>.deriveKey(inputKeyMaterial: inputKeyMaterial, salt: salt, info: info, outputByteCount: outputByteCount)
     }
     
     func finalizeKeyExchange(peerKey: Securemessage_GenericPublicKey) throws {

NearbyShare/OutboundNearbyConnection.swift

@@ -304,15 +304,9 @@ class OutboundNearbyConnection: NearbyConnection {
                 let typeID = try? url.resourceValues(forKeys: [.typeIdentifierKey]).typeIdentifier
                 meta.mimeType = "application/octet-stream"
                 if let typeID = typeID {
-                    if #available(macOS 11.0, *) {
-                        let type = UTType(typeID)
-                        if let type = type, let mimeType = type.preferredMIMEType {
-                            meta.mimeType = mimeType
-                        }
-                    } else {
-                        if let mimeType = UTTypeCopyPreferredTagWithClass(typeID as CFString, kUTTagClassMIMEType) {
-                            meta.mimeType = (mimeType.takeRetainedValue() as NSString) as String
-                        }
+                    let type = UTType(typeID)
+                    if let type = type, let mimeType = type.preferredMIMEType {
+                        meta.mimeType = mimeType
                     }
                 }
                 if meta.mimeType.starts(with: "image/") {
@@ -400,14 +394,10 @@ class OutboundNearbyConnection: NearbyConnection {
         }
 
         let fileBuffer: Data
-        if #available(macOS 10.15.4, *) {
-            guard let _fileBuffer = try currentTransfer!.handle!.read(upToCount: 512 * 1024) else {
-                throw NearbyError.inputOutput
-            }
-            fileBuffer = _fileBuffer
-        } else {
-            fileBuffer = currentTransfer!.handle!.readData(ofLength: 512 * 1024)
+        guard let _fileBuffer = try currentTransfer!.handle!.read(upToCount: 512 * 1024) else {
+            throw NearbyError.inputOutput
         }
+        fileBuffer = _fileBuffer
 
         var transfer = Location_Nearby_Connections_PayloadTransferFrame()
         transfer.packetType = .data

QuickDrop/View/WelcomeScreen.swift

@@ -40,11 +40,11 @@ struct WelcomeScreen: View {
                     openPrivacyPolicy()
                 }
                 
-                ExternalLinkLabel(label: "AndroidApp", icon: "smartphone") {
+                ExternalLinkLabel(label: "AndroidApp", icon: getPhoneIcon()) {
                     openAppAdvertisementView()
                 }
                 
-                ExternalLinkLabel(label: "TransmitUsingCable", icon: "cable.connector") {
+                ExternalLinkLabel(label: "TransmitUsingCable", icon: getCableIcon()) {
                     openCableTransmissionView()
                 }
                 
@@ -90,6 +90,20 @@ struct WelcomeScreen: View {
             NSWorkspace.shared.open(url)
         }
     }
+    
+    func getPhoneIcon() -> String {
+        if #available(macOS 14.0, *) {
+            return "smartphone"
+        }
+        return "iphone.rear.camera"
+    }
+    
+    func getCableIcon() -> String {
+        if #available(macOS 12.0, *) {
+            return "cable.connector"
+        }
+        return "externaldrive.connected.to.line.below.fill"
+    }
 }