public static void Run([TimerTrigger("0 */30 * * * *")] TimerInfo myTimer, ILogger log, ExecutionContext context)
{
// Log the start
log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
// Temporarily disable the task
log.LogInformation($"This task has been temporarily disabled");
return;
// Initialize the configuration object
var config = new ConfigurationBuilder()
.SetBasePath(context.FunctionAppDirectory)
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
// Get the storage account information
string storageAccountName = config["StorageAccountName"];
string storageAccountKey = config["StorageAccountKey"];
// Create the resources
Azure az = new Azure(storageAccountName, storageAccountKey);
// Read the RBLs from the configuration
List <RBL> MyRBLs = az.GetRBLs();
// Read the hosts from the configuration
List <Host> MyHosts = az.GetHosts();
// Process each host
foreach (Host host in MyHosts)
{
log.LogInformation($"Processing host: {host.Name}");
foreach (RBL l in MyRBLs)
{
RBLHostResult r = l.QueryHost(host.IP);
if (r.IsListed)
{
log.LogInformation($"\tHost {r.Host} is listed on {r.RBL}");
}
else
{
log.LogInformation($"\tHost {r.Host} is NOT listed on {r.RBL}");
}
}
}
// Log the end
log.LogInformation($"C# Timer trigger function completed at: {DateTime.Now}");
}
/// <summary>
/// Query a RBL
/// </summary>
/// <param name="IP"></param>
/// <returns></returns>
public RBLHostResult QueryHost(string IP)
{
// Create the result object
RBLHostResult result = new RBLHostResult(this.Name, IP);
// Create the record to query
string[] parts = IP.Split('.');
string record = parts[3] + '.' + parts[2] + '.' + parts[1] + '.' + parts[0] + '.' + FQDN;
// Query the list
try
{
IPHostEntry host = Dns.GetHostEntry(record);
if (host.AddressList != null)
{
// The host is found
result.IsListed = true;
result.Details = string.Empty;
}
}
catch (Exception e)
{
if (e.Message.Equals("No such host is known"))
{
result.IsListed = false;
result.Details = string.Empty;
}
}
if (result.IsListed)
{
// Query the txt record
}
// Return the result
return(result);
}
