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TunnelViewModel: Minor refactoring of exclude private IPs handling 

Signed-off-by: Roopesh Chander <roop@roopc.net>
This commit is contained in:
Roopesh Chander 2019-02-15 16:20:04 +05:30
parent 6f7214ff38
commit a355232e09
1 changed files with 23 additions and 20 deletions
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43
WireGuard/WireGuard/UI/TunnelViewModel.swift
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@ -401,39 +401,42 @@ class TunnelViewModel {
"193.0.0.0/8", "194.0.0.0/7", "196.0.0.0/6", "200.0.0.0/5", "208.0.0.0/4"
]
static func excludePrivateIPsFieldStates(isSinglePeer: Bool, allowedIPs: Set<String>) -> (shouldAllowExcludePrivateIPsControl: Bool, excludePrivateIPsValue: Bool) {
guard isSinglePeer else {
return (shouldAllowExcludePrivateIPsControl: false, excludePrivateIPsValue: false)
}
let allowedIPStrings = Set<String>(allowedIPs)
if allowedIPStrings.contains(TunnelViewModel.PeerData.ipv4DefaultRouteString) {
return (shouldAllowExcludePrivateIPsControl: true, excludePrivateIPsValue: false)
} else if allowedIPStrings.isSuperset(of: TunnelViewModel.PeerData.ipv4DefaultRouteModRFC1918String) {
return (shouldAllowExcludePrivateIPsControl: true, excludePrivateIPsValue: true)
} else {
return (shouldAllowExcludePrivateIPsControl: false, excludePrivateIPsValue: false)
}
}
func updateExcludePrivateIPsFieldState() {
if scratchpad.isEmpty {
populateScratchpad()
}
let allowedIPStrings = Set<String>(scratchpad[.allowedIPs].splitToArray(trimmingCharacters: .whitespacesAndNewlines))
(shouldAllowExcludePrivateIPsControl, excludePrivateIPsValue) = TunnelViewModel.PeerData.excludePrivateIPsFieldStates(isSinglePeer: numberOfPeers == 1, allowedIPs: allowedIPStrings)
shouldStronglyRecommendDNS = allowedIPStrings.contains(TunnelViewModel.PeerData.ipv4DefaultRouteString) || allowedIPStrings.isSuperset(of: TunnelViewModel.PeerData.ipv4DefaultRouteModRFC1918String)
guard numberOfPeers == 1 else {
shouldAllowExcludePrivateIPsControl = false
excludePrivateIPsValue = false
return
}
if allowedIPStrings.contains(TunnelViewModel.PeerData.ipv4DefaultRouteString) {
shouldAllowExcludePrivateIPsControl = true
excludePrivateIPsValue = false
} else if allowedIPStrings.isSuperset(of: TunnelViewModel.PeerData.ipv4DefaultRouteModRFC1918String) {
shouldAllowExcludePrivateIPsControl = true
excludePrivateIPsValue = true
}
static func modifiedAllowedIPs(currentAllowedIPs: [String], excludePrivateIPs: Bool, dnsServers: [String]) -> [String] {
let ipv6Addresses = currentAllowedIPs.filter { $0.contains(":") }
if excludePrivateIPs {
return ipv6Addresses + TunnelViewModel.PeerData.ipv4DefaultRouteModRFC1918String + dnsServers
} else {
shouldAllowExcludePrivateIPsControl = false
excludePrivateIPsValue = false
return ipv6Addresses + [TunnelViewModel.PeerData.ipv4DefaultRouteString]
}
}
func excludePrivateIPsValueChanged(isOn: Bool, dnsServers: String) {
let allowedIPStrings = scratchpad[.allowedIPs].splitToArray(trimmingCharacters: .whitespacesAndNewlines)
let dnsServerStrings = dnsServers.splitToArray(trimmingCharacters: .whitespacesAndNewlines)
let ipv6Addresses = allowedIPStrings.filter { $0.contains(":") }
let modifiedAllowedIPStrings: [String]
if isOn {
modifiedAllowedIPStrings = ipv6Addresses + TunnelViewModel.PeerData.ipv4DefaultRouteModRFC1918String + dnsServerStrings
} else {
modifiedAllowedIPStrings = ipv6Addresses + [TunnelViewModel.PeerData.ipv4DefaultRouteString]
}
let modifiedAllowedIPStrings = TunnelViewModel.PeerData.modifiedAllowedIPs(currentAllowedIPs: allowedIPStrings, excludePrivateIPs: isOn, dnsServers: dnsServerStrings)
scratchpad[.allowedIPs] = modifiedAllowedIPStrings.joined(separator: ", ")
validatedConfiguration = nil
excludePrivateIPsValue = isOn