/// <summary>
/// Manage the given network interface via M552
/// </summary>
/// <param name="index">Index of the network interface</param>
/// <param name="pParam">P parameter</param>
/// <param name="sParam">S parameter</param>
/// <returns>Configuration result</returns>
public static async Task <Message> SetConfig(int index, CodeParameter pParam, CodeParameter sParam)
{
NetworkInterface iface = Get(index);
StringBuilder result = new();
if (iface.Name.StartsWith('w'))
{
// WiFi interface
if (sParam == null)
{
// Report the status only if no valid S parameter is given
await Report(result, iface, index);
}
else if (sParam <= 0 || sParam > 2)
{
// Disable WiFi services
result.AppendLine(await AccessPoint.Stop());
result.AppendLine(await WPA.Stop());
// Disable WiFi adapter
string linkResult = await Command.Execute("/usr/sbin/ip", $"link set {iface.Name} down");
result.AppendLine(linkResult);
}
else if (sParam == 1)
{
// Is there a wpa_supplicant.conf?
if (!File.Exists("/etc/wpa_supplicant/wpa_supplicant.conf"))
{
return(new Message(MessageType.Error, "No WiFi configuration found, use M587 to configure at least one SSID"));
}
// No longer in AP mode
result.AppendLine(await AccessPoint.Stop());
// Disable the adapter
string disableResult = await Command.Execute("/usr/sbin/ip", $"link set {iface.Name} down");
result.AppendLine(disableResult);
// Start station mode
result.AppendLine(await WPA.Start());
// Enable the adapter again
string enableResult = await Command.Execute("/usr/sbin/ip", $"link set {iface.Name} up");
result.AppendLine(enableResult);
// Connect to the given SSID (if applicable)
if (pParam != null)
{
// Find the network index
string networkList = await Command.Execute("/usr/sbin/wpa_cli", "list_networks");
Regex ssidRegex = new($"^(\\d+)\\s+{Regex.Escape(sParam)}\\W", RegexOptions.IgnoreCase);
int networkIndex = -1;
using (StringReader reader = new(networkList))
{
do
{
string line = await reader.ReadLineAsync();
if (line == null)
{
break;
}
Match match = ssidRegex.Match(line);
if (match.Success)
{
networkIndex = int.Parse(match.Groups[1].Value);
break;
}
}while (!Program.CancellationToken.IsCancellationRequested);
}
if (networkIndex == -1)
{
return(new Message(MessageType.Error, "SSID could not be found, use M587 to configure it first"));
}
// Select it
string selectResult = await Command.Execute("/usr/sbin/wpa_cli", $"-i {iface.Name} select_network {networkIndex}");
if (selectResult.Trim() != "OK")
{
result.AppendLine(selectResult);
}
}
// else wpa_supplicant will connect to the next available network
}
else if (sParam == 2)
{
// Are the required config files present?
if (!File.Exists("/etc/hostapd/wlan0.conf"))
{
return(new Message(MessageType.Error, "No hostapd configuration found, use M589 to configure the access point first"));
}
if (!File.Exists("/etc/dnsmasq.conf"))
{
return(new Message(MessageType.Error, "No dnsmasq configuration found, use M589 to configure the access point first"));
}
// Is there at least one DHCP profile for AP mode?
if (!await DHCP.IsAPConfigured())
{
return(new Message(MessageType.Error, "No access point configuration found. Use M587 to configure it first"));
}
// No longer in station mode
result.AppendLine(await WPA.Stop());
// Disable the adapter
string disableResult = await Command.Execute("/usr/sbin/ip", $"link set {iface.Name} down");
result.AppendLine(disableResult);
// Start AP mode. This will enable the adapter too
result.AppendLine(await AccessPoint.Start());
}
}
else
{
// Ethernet interface
if (pParam != null)
{
// Set IP address
IPAddress ip = IPAddress.Parse(pParam);
string setResult = await DHCP.SetIPAddress(iface.Name, ip, null, null, null);
result.AppendLine(setResult);
}
if (sParam != null && (iface.OperationalStatus != OperationalStatus.Up) != sParam)
{
// Enable or disable the adapter if required
result.AppendLine(await Command.Execute("/usr/sbin/ip", $"link set {iface.Name} {(sParam ? "up" : "down")}"));
}
}
return(new Message(MessageType.Success, result.ToString().Trim()));
}
/// <summary>
/// Report the IP address of the network interface(s)
/// </summary>
/// <param name="builder">String builder to write to</param>
/// <param name="iface">Optional network interface</param>
/// <param name="index">Index of the network interface</param>
public static async ValueTask Report(StringBuilder builder, NetworkInterface iface, int index)
{
if (iface == null)
{
int i = 0;
foreach (NetworkInterface item in NetworkInterface.GetAllNetworkInterfaces())
{
if (item.NetworkInterfaceType != NetworkInterfaceType.Loopback && (index < 0 || index == i))
{
await Report(builder, item, i ++);
}
}
}
else
{
if (NetworkInterface.GetAllNetworkInterfaces().Count(item => item.NetworkInterfaceType != NetworkInterfaceType.Loopback) > 1)
{
// Add labels if there is more than one available network interface
builder.Append($"Interface {index}: ");
}
if (iface.Name.StartsWith('w'))
{
// WiFi interface
if (iface.OperationalStatus != OperationalStatus.Down)
{
UnicastIPAddressInformation ipInfo = (from unicastAddress in iface.GetIPProperties().UnicastAddresses
where unicastAddress.Address.AddressFamily == AddressFamily.InterNetwork
select unicastAddress).FirstOrDefault();
if (ipInfo != null)
{
bool isAccessPoint = await AccessPoint.IsEnabled();
builder.AppendLine($"WiFi module is {(isAccessPoint ? "providing access point" : "connected to access point")}, IP address {ipInfo.Address}");
}
else
{
builder.AppendLine("WiFi module is idle");
}
}
else
{
builder.AppendLine("WiFi module is disabled");
}
}
else
{
// Ethernet interface
IPAddress configuredIP = await DHCP.GetConfiguredIPAddress(iface.Name);
if (iface.OperationalStatus == OperationalStatus.Up)
{
IPAddress actualIP = (from unicastAddress in iface.GetIPProperties().UnicastAddresses
where unicastAddress.Address.AddressFamily == AddressFamily.InterNetwork
select unicastAddress.Address).FirstOrDefault() ?? IPAddress.Any;
builder.AppendLine($"Ethernet is enabled, configured IP address: {configuredIP}, actual IP address: {actualIP}");
}
else
{
builder.AppendLine($"Ethernet is disabled, configured IP address: {configuredIP}, actual IP address: 0.0.0.0");
}
}
}
}