/// <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>
/// Configure access point mode
/// </summary>
/// <param name="ssid">SSID to use</param>
/// <param name="psk">Password to use</param>
/// <param name="ipAddress">IP address</param>
/// <param name="channel">Optional channel number</param>
/// <returns></returns>
public static async Task <Message> Configure(string ssid, string psk, IPAddress ipAddress, int channel)
{
string countryCode = await WPA.GetCountryCode();
if (string.IsNullOrWhiteSpace(countryCode))
{
return(new Message(MessageType.Error, "Cannot configure access point because no country code has been set. Use M587 C to set it first"));
}
if (ssid == "*")
{
// Delete configuration files again
bool fileDeleted = false;
if (File.Exists("/etc/hostapd/wlan0.conf"))
{
File.Delete("/etc/hostapd/wlan0.conf");
fileDeleted = true;
}
if (File.Exists("/etc/dnsmasq.conf"))
{
File.Delete("/etc/dnsmasq.conf");
fileDeleted = true;
}
if (fileDeleted)
{
// Reset IP address configuration to station mode
await WPA.SetIPAddress(IPAddress.Any, null, null, null);
}
}
else
{
// Write hostapd config
using (FileStream hostapdTemplateStream = new(Path.Combine(Directory.GetCurrentDirectory(), "hostapd.conf"), FileMode.Open, FileAccess.Read))
{
using StreamReader reader = new(hostapdTemplateStream);
using FileStream hostapdConfigStream = new("/etc/hostapd/wlan0.conf", FileMode.Create, FileAccess.Write);
using StreamWriter writer = new(hostapdConfigStream);
while (!reader.EndOfStream)
{
string line = await reader.ReadLineAsync();
line = line.Replace("{ssid}", ssid);
line = line.Replace("{psk}", psk);
line = line.Replace("{channel}", channel.ToString());
line = line.Replace("{countryCode}", countryCode);
await writer.WriteLineAsync(line);
}
}
// Write dnsmasq config
using (FileStream dnsmasqTemplateStream = new(Path.Combine(Directory.GetCurrentDirectory(), "dnsmasq.conf"), FileMode.Open, FileAccess.Read))
{
using StreamReader reader = new(dnsmasqTemplateStream);
using FileStream dnsmasqConfigStream = new("/etc/dnsmasq.conf", FileMode.Create, FileAccess.Write);
using StreamWriter writer = new(dnsmasqConfigStream);
byte[] ip = ipAddress.GetAddressBytes();
string ipRangeStart = $"{ip[0]}.{ip[1]}.{ip[2]}.{((ip[3] < 100 || ip[3] > 150) ? 100 : 151)}";
string ipRangeEnd = $"{ip[0]}.{ip[1]}.{ip[2]}.{((ip[3] < 100 || ip[3] > 150) ? 150 : 200)}";
while (!reader.EndOfStream)
{
string line = await reader.ReadLineAsync();
line = line.Replace("{ipRangeStart}", ipRangeStart);
line = line.Replace("{ipRangeEnd}", ipRangeEnd);
line = line.Replace("{ipAddress}", ipAddress.ToString());
await writer.WriteLineAsync(line);
}
}
// Set IP address configuration for AP mode
await WPA.SetIPAddress(ipAddress, null, null, null, true);
}
// Done
return(new Message());
}