private void curlSetupCookies(CurlHandleType curlHandle)
{
// cookies, got a bunch of info from this place on how to do cookies: http://stackoverflow.com/questions/13020404/keeping-session-alive-with-curl-and-php
//string cookieFilePath = "/tmp/cookie.txt";
string cookieFilePath = "";
curl.SetOpt(curlHandle, CURLoption.COOKIEJAR, cookieFilePath);
curl.SetOpt(curlHandle, CURLoption.COOKIEFILE, cookieFilePath);
curl.SetOpt(curlHandle, CURLoption.COOKIESESSION, 1);
}
private void curlSetupAuthentication(CurlHandleType curlHandle)
{
if (this.options.useKerberosAuthentication)
{
// kerberos auth
curl.SetOpt(curlHandle, CURLoption.HTTPAUTH, CURLAUTH.GSSNEGOTIATE);
curl.SetOpt(curlHandle, CURLoption.USERPWD, ":");
}
else if (!string.IsNullOrWhiteSpace(this.options.user))
{
// basic auth
curl.SetOpt(curlHandle, CURLoption.HTTPAUTH, CURLAUTH.BASIC);
curl.SetOpt(curlHandle, CURLoption.USERPWD, this.options.getUserPasswordCurlOptValue());
}
}
private nac.CurlThin.SafeHandles.SafeSlistHandle curlSetHeader(CurlHandleType curlHandle,
Dictionary <string, string> headers)
{
// followed documentation here: https://curl.se/libcurl/c/CURLOPT_HTTPHEADER.html
if (headers?.Any() == true)
{
nac.CurlThin.SafeHandles.SafeSlistHandle list = SafeSlistHandle.Null;
foreach (var pair in headers)
{
list = nac.CurlThin.CurlNative.Slist.Append(list, $"{pair.Key}: {pair.Value}");
}
curl.SetOpt(curlHandle, CURLoption.HTTPHEADER, list.DangerousGetHandle());
return(list); // list will need to be freed
}
return(null);
}
private void curlSetupSSLVerification(CurlHandleType curlHandle)
{
// for now don't do any ssl verification, later we could make this an option or something
curl.SetOpt(curlHandle, CURLoption.SSL_VERIFYHOST, 0);
curl.SetOpt(curlHandle, CURLoption.SSL_VERIFYPEER, 0);
}
private model.CurlExecResult execCurl(CurlHandleType curlHandle, string url, Dictionary <string, string> headers = null)
{
var result = new model.CurlExecResult();
if (!this.isAbsoluteUrl(url))
{
url = this.options.appendToBaseAddress(url);
}
// we know the final URL here
result.RequestUrl = url;
/*
* people may need to modify headers on every call
+ like setting an oauth Authorization header
*/
if (this.options.onNewHttpRequest != null)
{
/*
* make sure headers is not null
+ If they specified a onNewHttpRequest callback they probably want to modify headers, so it needs to be non null
+ Normally it's fine for headers to be null, so just set it if they wanted to get a onNewHttpRequest callback
*/
if (headers == null)
{
headers = new Dictionary <string, string>();
}
this.options.onNewHttpRequest.Invoke(headers: headers);
}
// all the request headers should be set by this point
result.RequestHeaders = headers;
var headerListHandle = this.curlSetHeader(curlHandle, headers);
curl.SetOpt(curlHandle, CURLoption.URL, url);
result.ResponseStream = new System.IO.MemoryStream();
curl.SetOpt(curlHandle, CURLoption.WRITEFUNCTION, (data, size, nmemb, user) =>
{
var length = (int)size * (int)nmemb;
var buffer = new byte[length];
System.Runtime.InteropServices.Marshal.Copy(data, buffer, 0, length);
result.ResponseStream.Write(buffer, 0, length);
return((UIntPtr)length);
});
if (options.Timeout.HasValue)
{
// timeout is in 'seconds'; see: https://curl.se/libcurl/c/CURLOPT_TIMEOUT.html
curl.SetOpt(curlHandle, CURLoption.TIMEOUT_MS, (int)options.Timeout.Value.TotalMilliseconds);
}
result.CurlResultCode = curl.Perform(curlHandle);
// get the http response code
// documentation on getInfo is available here: https://curl.se/libcurl/c/curl_easy_getinfo.html
if (curl.GetInfo(curlHandle, CURLINFO.RESPONSE_CODE, out int httpResponseCode) == CURLcode.OK)
{
result.ResponseCode = (System.Net.HttpStatusCode)httpResponseCode;
}
// free up some stuff
if (headerListHandle != null)
{
headerListHandle.Dispose();
}
// give back result
return(result);
}