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| 1 | +// |
| 2 | +// DataUsage.swift |
| 3 | +// IP Address |
| 4 | +// |
| 5 | +// Created by Steve on 12/02/2019. |
| 6 | +// Copyright © 2019 Steve. All rights reserved. |
| 7 | +// |
| 8 | + |
| 9 | +import Foundation |
| 10 | + |
| 11 | + |
| 12 | + |
| 13 | +struct DataUsageInfo { |
| 14 | + var wifiReceived: UInt32 = 0 |
| 15 | + var wifiSent: UInt32 = 0 |
| 16 | + var wirelessWanDataReceived: UInt32 = 0 |
| 17 | + var wirelessWanDataSent: UInt32 = 0 |
| 18 | + |
| 19 | + mutating func updateInfoByAdding(info: DataUsageInfo) { |
| 20 | + wifiSent += info.wifiSent |
| 21 | + wifiReceived += info.wifiReceived |
| 22 | + wirelessWanDataSent += info.wirelessWanDataSent |
| 23 | + wirelessWanDataReceived += info.wirelessWanDataReceived |
| 24 | + } |
| 25 | +} |
| 26 | + |
| 27 | +class DataUsage { |
| 28 | + |
| 29 | + private static let wwanInterfacePrefix = "pdp_ip" |
| 30 | + private static let wifiInterfacePrefix = "en" |
| 31 | + |
| 32 | + class func getDataUsage() -> DataUsageInfo { |
| 33 | + var interfaceAddresses: UnsafeMutablePointer<ifaddrs>? = nil |
| 34 | + |
| 35 | + var dataUsageInfo = DataUsageInfo() |
| 36 | + |
| 37 | + guard getifaddrs(&interfaceAddresses) == 0 else { return dataUsageInfo } |
| 38 | + |
| 39 | + var pointer = interfaceAddresses |
| 40 | + while pointer != nil { |
| 41 | + guard let info = getDataUsageInfo(from: pointer!) else { |
| 42 | + pointer = pointer!.pointee.ifa_next |
| 43 | + continue |
| 44 | + } |
| 45 | + dataUsageInfo.updateInfoByAdding(info: info) |
| 46 | + pointer = pointer!.pointee.ifa_next |
| 47 | + } |
| 48 | + |
| 49 | + freeifaddrs(interfaceAddresses) |
| 50 | + |
| 51 | + return dataUsageInfo |
| 52 | + } |
| 53 | + |
| 54 | + private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer<ifaddrs>) -> DataUsageInfo? { |
| 55 | + let pointer = infoPointer |
| 56 | + |
| 57 | + let name: String! = String(cString: infoPointer.pointee.ifa_name) |
| 58 | + let addr = pointer.pointee.ifa_addr.pointee |
| 59 | + guard addr.sa_family == UInt8(AF_LINK) else { return nil } |
| 60 | + |
| 61 | + return dataUsageInfo(from: pointer, name: name) |
| 62 | + } |
| 63 | + |
| 64 | + private class func dataUsageInfo(from pointer: UnsafeMutablePointer<ifaddrs>, name: String) -> DataUsageInfo { |
| 65 | + var networkData: UnsafeMutablePointer<if_data>? = nil |
| 66 | + var dataUsageInfo = DataUsageInfo() |
| 67 | + |
| 68 | + if name.hasPrefix(wifiInterfacePrefix) { |
| 69 | + networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self) |
| 70 | + dataUsageInfo.wifiSent += networkData?.pointee.ifi_obytes ?? 0 |
| 71 | + dataUsageInfo.wifiReceived += networkData?.pointee.ifi_ibytes ?? 0 |
| 72 | + } else if name.hasPrefix(wwanInterfacePrefix) { |
| 73 | + networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self) |
| 74 | + dataUsageInfo.wirelessWanDataSent += networkData?.pointee.ifi_obytes ?? 0 |
| 75 | + dataUsageInfo.wirelessWanDataReceived += networkData?.pointee.ifi_ibytes ?? 0 |
| 76 | + } |
| 77 | + |
| 78 | + return dataUsageInfo |
| 79 | + } |
| 80 | +} |
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