public async Task <Response> SendTweetAsync(Twitt twitt, string mediaIds, CancellationToken ct)
{
return(await Task.Factory.StartNew(() =>
{
if (!Connected)
{
return new Response()
{
Text = "Service is not verified!", Failed = true
}
}
;
var resource_url = "https://api.twitter.com/1.1/statuses/update.json";
var res = SendPOSTRequest(twitt, resource_url, mediaIds);
return res;
}, ct));
}
public Response Connect()
{
var request_url = "https://api.twitter.com/oauth/request_token";
Twitt empty = new Twitt()
{
Text = "", Media = null
};
var response = SendPOSTRequest(empty, request_url);
OauthMembers set = new OauthMembers(response.Text);
// oauth token
this.oauth_token = set.oauth_token;
this.oauth_token_secret = set.oauth_token_secret;
string verifier_url = "https://api.twitter.com/oauth/authorize?oauth_token=" + oauth_token;
System.Diagnostics.Process.Start(verifier_url);
return(response);
}
public Response SetToken(string oauth_verifier)
{
Response resp = new Response();
if (oauth_verifier == null)
{
resp.Failed = true;
resp.Text = "Bad PIN code!";
Disconnect();
return(resp);
}
Twitt verify = new Twitt()
{
Text = oauth_verifier, Media = null
};
string access_url = "https://api.twitter.com/oauth/access_token";
var response = SendPOSTRequest(verify, access_url, null, oauth_token);
OauthMembers set = new OauthMembers(response.Text);
// access_token_secret
this.oauth_token = set.oauth_token;
this.oauth_token_secret = set.oauth_token_secret;
if (onAuthorized != null)
{
onAuthorized.Invoke(oauth_token, oauth_token_secret);
}
var res = GetCredentials("https://api.twitter.com/1.1/account/verify_credentials.json");
User = new User(res.Text);
return(resp);
}
public async Task <Response> SendImageAsync(System.Drawing.Image img, CancellationToken ct)
{
return(await Task.Factory.StartNew(() =>
{
if (!Connected)
{
return new Response()
{
Text = "Service is not verified!", Failed = true
}
}
;
var resource_url = "https://upload.twitter.com/1.1/media/upload.json";
byte[] bytes = null;
using (var ms = new MemoryStream())
{
img.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
bytes = ms.ToArray();
}
var key = DateTime.UtcNow.ToBinary().ToString();
Twitt twitt = new Twitt()
{
Media = bytes, Text = key
};
var res = SendPOSTRequest(twitt, resource_url);
return res;
}, ct));
}
Response SendPOSTRequest(Twitt twitt, string resource_url, string media = "", string token = "")
{
// unique request details
var oauth_nonce = Convert.ToBase64String(
new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString()));
var timeSpan = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
var oauth_timestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString();
string headerMemberName = (token != "") ? "oauth_verifier" : "status";
var oauth_token = (token == "") ? this.oauth_token : token;
string baseString = null;
if (twitt.Media == null)
{
string baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" +
"&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}&" + headerMemberName + "={6}";
baseString = string.Format(baseFormat,
oauth_consumer_key,
oauth_nonce,
oauth_signature_method,
oauth_timestamp,
oauth_token,
oauth_version,
Uri.EscapeDataString(twitt.Text)
);
}
else
{
// create oauth signature
var baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" +
"&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}";
baseString = string.Format(baseFormat,
oauth_consumer_key,
oauth_nonce,
oauth_signature_method,
oauth_timestamp,
oauth_token,
oauth_version
);
if (!string.IsNullOrEmpty(media))
{
baseString = "media_ids=" + Uri.EscapeDataString(media) + "&" + baseString + "&place_id=NoInput&status=" + Uri.EscapeDataString(twitt.Text);
}
}
baseString = string.Concat("POST&", Uri.EscapeDataString(resource_url), "&", Uri.EscapeDataString(baseString));
var compositeKey = string.Concat(Uri.EscapeDataString(oauth_consumer_secret),
"&", Uri.EscapeDataString(oauth_token_secret));
string oauth_signature;
using (System.Security.Cryptography.HMACSHA1 hasher = new System.Security.Cryptography.HMACSHA1(ASCIIEncoding.ASCII.GetBytes(compositeKey)))
{
oauth_signature = Convert.ToBase64String(
hasher.ComputeHash(ASCIIEncoding.ASCII.GetBytes(baseString)));
}
string authHeader = null;
if (twitt.Media == null)
{
// create the request header
var headerFormat = "OAuth oauth_consumer_key=\"{0}\", oauth_nonce=\"{1}\", " +
"oauth_signature_method=\"{2}\", oauth_timestamp=\"{3}\", " +
"oauth_token=\"{4}\", oauth_version=\"{5}\", " +
"oauth_signature=\"{6}\", " + headerMemberName + "=\"{7}\"";
authHeader = string.Format(headerFormat,
Uri.EscapeDataString(oauth_consumer_key),
Uri.EscapeDataString(oauth_nonce),
Uri.EscapeDataString(oauth_signature_method),
Uri.EscapeDataString(oauth_timestamp),
Uri.EscapeDataString(oauth_token),
Uri.EscapeDataString(oauth_version),
Uri.EscapeDataString(oauth_signature),
Uri.EscapeDataString(twitt.Text)
);
//if (!string.IsNullOrEmpty(media))
// authHeader += $"media_ids=\"{media}\"";
}
else
{
// create the request header
var headerFormat = "OAuth oauth_consumer_key=\"{0}\", oauth_nonce=\"{1}\", " +
"oauth_signature=\"{2}\", oauth_signature_method=\"{3}\", " +
"oauth_timestamp=\"{4}\", oauth_token=\"{5}\", " +
"oauth_version=\"{6}\"";
authHeader = string.Format(headerFormat,
Uri.EscapeDataString(oauth_consumer_key),
Uri.EscapeDataString(oauth_nonce),
Uri.EscapeDataString(oauth_signature),
Uri.EscapeDataString(oauth_signature_method),
Uri.EscapeDataString(oauth_timestamp),
Uri.EscapeDataString(oauth_token),
Uri.EscapeDataString(oauth_version)
);
//if (!string.IsNullOrEmpty(media))
// authHeader = authHeader + ", media_ids=\"" + Uri.EscapeDataString(media) + "\", place_id=\"NoInput\", status=\"" + Uri.EscapeDataString(twitt.Text)+"\"";
}
HttpWebRequest request = null;
if (twitt.Media == null)
{
request = (HttpWebRequest)WebRequest.Create(resource_url);
request.Headers.Add("Authorization", authHeader);
request.Method = "POST";
request.Accept = "application/json";
// make the request
string postBody = "status=" + Uri.EscapeDataString(twitt.Text);
ServicePointManager.Expect100Continue = false;
request.ContentType = "application/x-www-form-urlencoded";
using (System.IO.Stream stream = request.GetRequestStream())
{
byte[] content = ASCIIEncoding.ASCII.GetBytes(postBody);
stream.Write(content, 0, content.Length);
}
}
else
{
if (string.IsNullOrEmpty(media))
{
Encoding EncodingAlgorithm = Encoding.GetEncoding("iso-8859-1");
string Boundary = DateTime.Now.Ticks.ToString("x");
string StartBoundary = string.Format("--{0}\r\n", Boundary);
string EndBoundary = string.Format("\r\n--{0}--\r\n", Boundary);
string sContentType = "multipart/form-data;boundary=" + Boundary;
string contentDisposition = "Content-Disposition: form-data; ";
string contenName = "name=\"media\";\r\n ";
string contentType = "\r\nContent-Type: application/octet-stream\r\n\r\n";
string Data = EncodingAlgorithm.GetString(twitt.Media, 0, twitt.Media.Length);
var contents = new System.Text.StringBuilder();
contents.Append(String.Format("{0}{1}{2}{3}{4}", StartBoundary, contentDisposition, contenName, contentType, Data));
contents.Append(EndBoundary);
byte[] Content = EncodingAlgorithm.GetBytes(contents.ToString());
request = (HttpWebRequest)WebRequest.Create(resource_url);
request.Method = "POST";
request.AllowWriteStreamBuffering = true;
request.Headers.Add("Authorization", authHeader);
request.ContentType = sContentType;
request.ContentLength = Content.Length;
Stream dataStream = request.GetRequestStream();
dataStream.Write(Content, 0, Content.Length);
dataStream.Close();
}
else
{
request = (HttpWebRequest)WebRequest.Create(resource_url);
request.Method = "POST";
request.Accept = "application/json";
request.ContentType = "application/x-www-form-urlencoded; charset=utf-8";
request.UseDefaultCredentials = true;
request.Headers.Add("Authorization", authHeader);
request.UserAgent = "LINQ-To-Twitter/3.0";
request.Headers.Add("ExpectContinue", "true");
request.Headers.Add("CacheControl", "no-cache");
request.Date = DateTime.UtcNow;
// make the request
string postBody = "status=" + Uri.EscapeDataString(twitt.Text) + "&place_id=NoInput&media_ids=" + media;
byte[] content = ASCIIEncoding.UTF8.GetBytes(postBody);
request.ContentLength = content.Length;
ServicePointManager.Expect100Continue = false;
using (System.IO.Stream stream = request.GetRequestStream())
{
stream.Write(content, 0, content.Length);
}
}
}
Dictionary <string, string> responseItems = new Dictionary <string, string>();
Response res = new Response();
try
{
var response = (HttpWebResponse)request.GetResponse();
using (var reader = new System.IO.StreamReader(response.GetResponseStream(), ASCIIEncoding.ASCII))
{
string responseText = reader.ReadToEnd();
res.Text = responseText;
//string[] tokens = responseText.Split(new char[] { '&', '=' });
//if (tokens.Length % 2 == 0) // token's response
//{
// for (int i = 0; i < tokens.Length; i += 2)
// {
// responseItems[tokens[i]] = tokens[i + 1];
// }
//}
//else // twitts response
//{
// responseItems[twitt.Text] = responseText;
//}
}
}
catch (WebException ex)
{
var resp = new StreamReader(ex.Response.GetResponseStream()).ReadToEnd();
string error = (string)JObject.Parse(resp).SelectToken("errors[0].message");
res.Failed = true;
res.Text = (error == null)? ex.Message : error;
}
return(res);
}