private void Proxify(WebClient client, ProxySettings data)
{
var proxy = data.Port.HasValue ? new WebProxy(data.Host, data.Port.Value) : new WebProxy(data.Host);
if (data.AuthRequired)
proxy.Credentials = new NetworkCredential(data.AuthUsername, data.AuthPassword);
client.Proxy = proxy;
}
public void Build(IEnumerable<string> args)
{
var argStack = new Queue<string>(args);
while (argStack.Any())
{
var arg = argStack.Dequeue();
switch (arg.ToLowerInvariant())
{
case "-h":
case "--help":
Help = true;
break;
case "-e":
case "--extensions":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
Extensions = argStack.Dequeue().Split(',');
break;
case "-p":
case "--proxy-settings":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
var regex = new Regex(@"((?<user>\w+):(?<pass>\w+)@)?(?<ip>(\d{1,3}\.){3}\d{1,3})(:(?<port>\d{1,5}))?");
/* explanation of (\w+:\w+@)?(\d{1,3}\.){3}\d{1,3}(:\d{1,5})? (above version is exactly the same but with group names)
* (http://(\w+:\w+@)?)? - optional group of user:pass@
* (\d{1,3}\.){3} - three groups of one to three digits followed by a dot
* \d{1,3} - one to three digits
* (:\d{1,5})? - optional group of colon followed by one to five digits
*/
var match = regex.Match(argStack.Dequeue());
if(!match.Success)
throw new ApplicationException(ValueInvalid(arg, ", try `[user:pass@]host[:port]`"));
ProxyData = new ProxySettings
{
Host = match.Groups["ip"].Value,
Port = match.Groups["port"].Success ? int.Parse(match.Groups["port"].Value) : (int?)null,
AuthUsername = match.Groups["user"].Value,
AuthPassword = match.Groups["pass"].Value,
AuthRequired = match.Groups["user"].Success && match.Groups["pass"].Success
};
break;
case "-d":
case "--save-directory":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
SaveDirectory = argStack.Dequeue();
break;
case "-r":
case "--recursion-depth":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
int level;
if(!int.TryParse(argStack.Dequeue(), out level) || level < -1)
throw new ApplicationException(ValueInvalid(arg));
RecursionDepth = level;
break;
case "-u":
case "--user-agent":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
UserAgent = argStack.Dequeue();
break;
case "-gt":
case "--greater-than":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
GreaterThan = GetSize(argStack.Dequeue());
break;
case "-lt":
case "--less-than":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
LessThan = GetSize(argStack.Dequeue());
break;
case "-t":
case "--recursion-target":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
RecursionTarget = argStack.Dequeue();
break;
case "-l":
case "--link-label":
LinkLabel = true;
break;
case "-n":
case "--name-filter":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
NameFilter = argStack.Dequeue();
break;
case "-o":
case "--request-timeout":
if (!argStack.Any())
throw new ApplicationException(ValueExpected(arg));
int timeout;
if (!int.TryParse(argStack.Dequeue(), out timeout) || timeout < -1)
throw new ApplicationException(ValueInvalid(arg));
RequestTimeout = timeout;
break;
default:
if (Url != null)
throw new ApplicationException("unexpected argument: " + arg);
if (!Uri.IsWellFormedUriString(arg, UriKind.Absolute))
throw new ApplicationException(ValueInvalid("url", ", remember to provide absolute url"));
Url = arg;
break;
}
}
if (Help)
return;
if (Url == null)
throw new ApplicationException(ArgumentMissing("url"));
if (!Extensions.Any())
throw new ApplicationException(ArgumentMissing("extensions list"));
}