Hi I’m trying to write a powershell tool to tweet and send messages.
I can send tweets without a problem but when I try to send private messages i get a 401, as in i can’t be authorized but it’s the exact same details that works with tweeting. I’ve also made sure to set rights to read, write and direct messages.
What could be wrong?
[Reflection.Assembly]::LoadWithPartialName("System.Security")
[Reflection.Assembly]::LoadWithPartialName("System.Net")
$screen_name = [System.Uri]::EscapeDataString("twittb0t");
$text = [System.Uri]::EscapeDataString("hithere");
$oauth_consumer_key = "<redacted>";
$oauth_consumer_secret = "<redacted>";
$oauth_token = "<redacted>";
$oauth_token_secret = "<redacted>";
$oauth_nonce = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes([System.DateTime]::Now.Ticks.ToString()));
$ts = [System.DateTime]::UtcNow - [System.DateTime]::ParseExact("01/01/1970", "dd/MM/yyyy", $null).ToUniversalTime();
$oauth_timestamp = [System.Convert]::ToInt64($ts.TotalSeconds).ToString();
$signature = "POST&";
$signature += [System.Uri]::EscapeDataString("https://api.twitter.com/1.1/direct_messages/new.json") + "&";
$signature += [System.Uri]::EscapeDataString("oauth_consumer_key=" + $oauth_consumer_key + "&");
$signature += [System.Uri]::EscapeDataString("oauth_nonce=" + $oauth_nonce + "&");
$signature += [System.Uri]::EscapeDataString("oauth_signature_method=HMAC-SHA1&");
$signature += [System.Uri]::EscapeDataString("oauth_timestamp=" + $oauth_timestamp + "&");
$signature += [System.Uri]::EscapeDataString("oauth_token=" + $oauth_token + "&");
$signature += [System.Uri]::EscapeDataString("oauth_version=1.0&");
$signature += [System.Uri]::EscapeDataString("text=" + $text);
$signature += [System.Uri]::EscapeDataString("&screen_name=" + $screen_name);
$signature_key = [System.Uri]::EscapeDataString($oauth_consumer_secret) + "&" + [System.Uri]::EscapeDataString($oauth_token_secret);
$hmacsha1 = new-object System.Security.Cryptography.HMACSHA1;
$hmacsha1.Key = [System.Text.Encoding]::ASCII.GetBytes($signature_key);
$oauth_signature = [System.Convert]::ToBase64String($hmacsha1.ComputeHash([System.Text.Encoding]::ASCII.GetBytes($signature)));
$oauth_authorization = 'OAuth ';
$oauth_authorization += 'oauth_consumer_key="' + [System.Uri]::EscapeDataString($oauth_consumer_key) + '",';
$oauth_authorization += 'oauth_nonce="' + [System.Uri]::EscapeDataString($oauth_nonce) + '",';
$oauth_authorization += 'oauth_signature="' + [System.Uri]::EscapeDataString($oauth_signature) + '",';
$oauth_authorization += 'oauth_signature_method="HMAC-SHA1",'
$oauth_authorization += 'oauth_timestamp="' + [System.Uri]::EscapeDataString($oauth_timestamp) + '",'
$oauth_authorization += 'oauth_token="' + [System.Uri]::EscapeDataString($oauth_token) + '",';
$oauth_authorization += 'oauth_version="1.0"';
$post_body = [System.Text.Encoding]::ASCII.GetBytes("text=" + $text + "&screen_name=" + $screen_name);
[System.Net.HttpWebRequest] $request = [System.Net.WebRequest]::Create("https://api.twitter.com/1.1/direct_messages/new.json");
$request.Method = "POST";
$request.Headers.Add("Authorization", $oauth_authorization);
$request.ContentType = "application/x-www-form-urlencoded";
$request.ContentLength = $post_body.Length
$body = $request.GetRequestStream();
$body.write($post_body, 0, $post_body.Length);
$body.flush();
$body.close();
$response = $request.GetResponse();
$response.Close()
