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VPN: Make sure actions inside tunnelProvider completion handlers are done in the main queue

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They should really already be in the main queue, but we do this just in case.
This commit is contained in:
Roopesh Chander 2018-11-03 19:20:00 +05:30
parent f4f1278a82
commit 215c56cec3
1 changed files with 35 additions and 17 deletions
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32
WireGuard/WireGuard/VPN/TunnelsManager.swift
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@ -48,9 +48,11 @@ class TunnelsManager {
os_log("Failed to load tunnel provider managers: %{public}@", log: OSLog.default, type: .debug, "\(error)")
return
}
DispatchQueue.main.async {
completionHandler(TunnelsManager(tunnelProviders: managers ?? []))
}
}
}
func add(tunnelConfiguration: TunnelConfiguration, completionHandler: @escaping (TunnelContainer?, TunnelManagementError?) -> Void) {
let tunnelName = tunnelConfiguration.interface.name
@ -74,10 +76,13 @@ class TunnelsManager {
defer { self?.isAddingTunnel = false }
guard (error == nil) else {
os_log("Add: Saving configuration failed: %{public}@", log: OSLog.default, type: .error, "\(error!)")
DispatchQueue.main.async {
completionHandler(nil, TunnelManagementError.vpnSystemErrorOnAddTunnel)
}
return
}
if let s = self {
DispatchQueue.main.async { [weak self] in
guard let s = self else { return }
let tunnel = TunnelContainer(tunnel: tunnelProviderManager)
s.tunnels.append(tunnel)
s.tunnels.sort { $0.name < $1.name }
@ -132,10 +137,13 @@ class TunnelsManager {
defer { self?.isModifyingTunnel = false }
guard (error == nil) else {
os_log("Modify: Saving configuration failed: %{public}@", log: OSLog.default, type: .error, "\(error!)")
DispatchQueue.main.async {
completionHandler(TunnelManagementError.vpnSystemErrorOnModifyTunnel)
}
return
}
if let s = self {
DispatchQueue.main.async { [weak self] in
guard let s = self else { return }
if (isNameChanged) {
let oldIndex = s.tunnels.firstIndex(of: tunnel)!
s.tunnels.sort { $0.name < $1.name }
@ -166,14 +174,15 @@ class TunnelsManager {
completionHandler(TunnelManagementError.vpnSystemErrorOnRemoveTunnel)
return
}
if let s = self {
DispatchQueue.main.async { [weak self] in
guard let s = self else { return }
let index = s.tunnels.firstIndex(of: tunnel)!
s.tunnels.remove(at: index)
s.delegate?.tunnelRemoved(at: index)
}
completionHandler(nil)
}
}
}
func numberOfTunnels() -> Int {
return tunnels.count
@ -330,13 +339,17 @@ class TunnelContainer: NSObject {
tunnelProvider.saveToPreferences { [weak self] (error) in
if (error != nil) {
os_log("Error saving tunnel after re-enabling: %{public}@", log: OSLog.default, type: .error, "\(error!)")
DispatchQueue.main.async {
completionHandler(error)
}
return
}
os_log("startActivation: Tunnel saved after re-enabling", log: OSLog.default, type: .info)
os_log("startActivation: Invoking startActivation", log: OSLog.default, type: .debug)
DispatchQueue.main.async { [weak self] in
self?.startActivation(recursionCount: recursionCount + 1, lastError: NEVPNError(NEVPNError.configurationUnknown), tunnelConfiguration: tunnelConfiguration, resolvedEndpoints: resolvedEndpoints, completionHandler: completionHandler)
}
}
return
}
@ -355,14 +368,16 @@ class TunnelContainer: NSObject {
os_log("startActivation: Error starting tunnel. Examining error", log: OSLog.default, type: .debug)
guard let vpnError = error as? NEVPNError else {
os_log("Failed to activate tunnel: %{public}@", log: OSLog.default, type: .debug, "\(error)")
status = .inactive
DispatchQueue.main.async {
completionHandler(error)
}
return
}
guard (vpnError.code == NEVPNError.configurationInvalid || vpnError.code == NEVPNError.configurationStale) else {
os_log("Failed to activate tunnel: %{public}@", log: OSLog.default, type: .debug, "\(error)")
status = .inactive
DispatchQueue.main.async {
completionHandler(error)
}
return
}
assert(vpnError.code == NEVPNError.configurationInvalid || vpnError.code == NEVPNError.configurationStale)
@ -372,16 +387,19 @@ class TunnelContainer: NSObject {
tunnelProvider.loadFromPreferences { [weak self] (error) in
if (error != nil) {
os_log("Failed to activate tunnel: %{public}@", log: OSLog.default, type: .debug, "\(error!)")
self?.status = .inactive
DispatchQueue.main.async {
completionHandler(error)
}
return
}
os_log("startActivation: Tunnel reloaded", log: OSLog.default, type: .info)
os_log("startActivation: Invoking startActivation", log: OSLog.default, type: .debug)
DispatchQueue.main.async { [weak self] in
self?.startActivation(recursionCount: recursionCount + 1, lastError: vpnError, tunnelConfiguration: tunnelConfiguration, resolvedEndpoints: resolvedEndpoints, completionHandler: completionHandler)
}
}
}
}
fileprivate func startDeactivation() {
assert(status == .active)