public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseSystemd()
.ConfigureAppConfiguration((hostContext, config) =>
{
// see chmod(2), https://linux.die.net/man/2/chmod for reference
FilePermissions root600 =
FilePermissions.S_IRUSR | FilePermissions.S_IWUSR | FilePermissions.S_IFREG;
FilePermissions root640 =
FilePermissions.S_IRUSR | FilePermissions.S_IWUSR | FilePermissions.S_IRGRP | FilePermissions.S_IFREG;
if (File.Exists("/etc/EchoSeven/appsettings.json") &&
UnixFileSystemInfo.GetFileSystemEntry("/etc/EchoSeven/appsettings.json").OwnerUser.UserName.Equals("root") &&
UnixFileSystemInfo.GetFileSystemEntry("/etc/EchoSeven/appsettings.json").OwnerGroup.GroupName.Equals("root") &&
(UnixFileSystemInfo.GetFileSystemEntry("/etc/EchoSeven/appsettings.json").Protection.Equals(root600) ||
UnixFileSystemInfo.GetFileSystemEntry("/etc/EchoSeven/appsettings.json").Protection.Equals(root640)) &&
UnixEnvironment.EffectiveUser.UserName.Equals("root"))
{
var settings = config.Build();
config.AddJsonFile("/etc/EchoSeven/appsettings.json", optional: true, reloadOnChange: false);
}
})
.ConfigureServices((hostContext, services) =>
{
IConfiguration configuration = hostContext.Configuration;
EchoServerOptions options = configuration.GetSection("EchoService").Get <EchoServerOptions>();
services.AddSingleton(options);
services.AddHostedService <EchoSevenService>();
});
public EchoSevenService(ILogger <EchoSevenService> logger, EchoServerOptions options)
{
_logger = logger;
_options = options;
}