public static async Task <uint> CreatePost(Board board, Thread thread, string message, ICaptcha captcha, OptionalPostArgs args)
{
string url = string.Format("https://sys.4chan.org/{0}/post", board.BoardId);
var postData = new Dictionary <string, object>();
postData.Add("MAX_FILE_SIZE", "4194304");
postData.Add("mode", "regist");
postData.Add("name", args.Name);
postData.Add("com", message);
if (thread != null)
{
postData.Add("resto", thread.PostNumber.ToString());
}
if (!string.IsNullOrEmpty(args.Options))
{
postData.Add("email", args.Options);
}
if (!string.IsNullOrEmpty(args.Password))
{
postData.Add("pwd", args.Password);
}
else
{
var sb = new StringBuilder();
var r = new Random();
for (var i = 0; i < 15; i++)
{
sb.Append((char)(r.Next('a', 'z')));
}
postData.Add("pwd", sb.ToString());
}
if (!captcha.Solved)
{
throw new CaptchaException();
}
if (args.File != null)
{
var filename = "file";
if (!string.IsNullOrEmpty(args.Filename))
{
filename = args.Filename;
}
if (!mappings.ContainsKey(Path.GetExtension(filename).ToLower()))
{
throw new UnsupportedFiletypeException(Path.GetExtension(filename));
}
var file = new byte[args.File.Length];
await args.File.ReadAsync(file, 0, file.Length).ConfigureAwait(false);
postData.Add("upfile",
new Internet.FileParameter(file, filename,
mappings[Path.GetExtension(filename).ToLower()]));
}
var request = WebRequest.Create(url) as HttpWebRequest;
request.CookieContainer = new CookieContainer();
string formDataBoundary = string.Format("----------{0:N}", Guid.NewGuid());
byte[] formData = Internet.GetMultipartFormData(postData, formDataBoundary);
request.Method = "POST";
request.ContentType = "multipart/form-data; boundary=" + formDataBoundary;
request.Headers["Content-Length"] = formData.Length.ToString();
request.Headers["User-Agent"] = Internet.UserAgent;
captcha.Authenticate(request, postData);
using (Stream requeStream = await request.GetRequestStreamAsync().ConfigureAwait(false))
{
requeStream.Write(formData, 0, formData.Length);
}
var response = await request.GetResponseAsync() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.NotFound)
{
throw new ThreadNotFoundException();
}
using (var respStream = new StreamReader(response.GetResponseStream()))
{
string text = respStream.ReadToEnd();
if (text.Contains("CAPTCHA"))
{
throw new CaptchaException();
}
if (text.Contains("banned") || text.Contains("warn"))
{
throw new BannedException();
}
try
{
Match postIdMatch = Regex.Match(text, "no:(\\d+)");
string postIdStr = postIdMatch.Groups[1].Captures[0].Value;
return(uint.Parse(postIdStr));
}
catch (ArgumentOutOfRangeException)
{
throw new UnknownPostException();
}
}
}
