(C#) AWS Security Token Service (STS) AssumeRole

See more AWS Security Token Service Examples

Returns a set of temporary security credentials that you can use to access AWS resources. These temporary credentials consist of an access key ID, a secret access key, and a security token. Typically, you use AssumeRole within your account or for cross-account access.

For more information, see https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html

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// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Rest rest = new Chilkat.Rest();

// Connect to the Amazon AWS REST server.
// such as https://sts.us-west-2.amazonaws.com/
bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
bool success = rest.Connect("sts.us-west-2.amazonaws.com",port,bTls,bAutoReconnect);

// Provide AWS credentials for the REST call.
Chilkat.AuthAws authAws = new Chilkat.AuthAws();
authAws.AccessKey = "AWS_ACCESS_KEY";
authAws.SecretKey = "AWS_SECRET_KEY";
// the region should match our URL above..
// See https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_enable-regions.html
authAws.Region = "us-west-2";
authAws.ServiceName = "sts";

rest.SetAuthAws(authAws);

// Sample Request
// https://sts.amazonaws.com/
// ?Version=2011-06-15
// &Action=AssumeRole
// &RoleSessionName=testAR
// &RoleArn=arn:aws:iam::123456789012:role/demo
// &PolicyArns.member.1.arn=arn:aws:iam::123456789012:policy/demopolicy1
// &PolicyArns.member.2.arn=arn:aws:iam::123456789012:policy/demopolicy2
// &Policy={"Version":"2012-10-17","Statement":[{"Sid":"Stmt1",
// "Effect":"Allow","Action":"s3:*","Resource":"*"}]}
// &DurationSeconds=3600
// &Tags.member.1.Key=Project
// &Tags.member.1.Value=Pegasus
// &Tags.member.2.Key=Team
// &Tags.member.2.Value=Engineering
// &Tags.member.3.Key=Cost-Center
// &Tags.member.3.Value=12345
// &TransitiveTagKeys.member.1=Project
// &TransitiveTagKeys.member.2=Cost-Center
// &ExternalId=123ABC
// &SourceIdentity=Alice
// &AUTHPARAMS

rest.AddQueryParam("Version","2011-06-15");
rest.AddQueryParam("Action","AssumeRole");
rest.AddQueryParam("DurationSeconds","3600");

rest.AddQueryParam("RoleSessionName","testAR");
rest.AddQueryParam("RoleArn","arn:aws:iam::123456789012:role/demo");
rest.AddQueryParam("PolicyArns.member.1.arn","arn:aws:iam::123456789012:policy/demopolicy1");
rest.AddQueryParam("PolicyArns.member.2.arn","arn:aws:iam::123456789012:policy/demopolicy2");
rest.AddQueryParam("Policy","{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Stmt1\",\"Effect\":\"Allow\",\"Action\":\"s3:*\",\"Resource\":\"*\"}]}");
rest.AddQueryParam("Tags.member.1.Key","Project");
rest.AddQueryParam("Tags.member.1.Value","Pegasus");
rest.AddQueryParam("Tags.member.2.Key","Team");
rest.AddQueryParam("Tags.member.2.Value","Engineering");
rest.AddQueryParam("Tags.member.3.Key","Cost-Center");
rest.AddQueryParam("Tags.member.3.Value","12345");
rest.AddQueryParam("TransitiveTagKeys.member.1","Project");
rest.AddQueryParam("TransitiveTagKeys.member.2","Cost-Center");
rest.AddQueryParam("ExternalId","123ABC");
rest.AddQueryParam("SourceIdentity","Alice");

string responseXml = rest.FullRequestNoBody("GET","/");
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// A successful response will have a status code equal to 200.
if (rest.ResponseStatusCode != 200) {
    Debug.WriteLine("response status code = " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("response status text = " + rest.ResponseStatusText);
    Debug.WriteLine("response header: " + rest.ResponseHeader);
    Debug.WriteLine("response body: " + responseXml);
    return;
}

// Examine the successful XML response (shown below)
Chilkat.Xml xml = new Chilkat.Xml();
xml.LoadXml(responseXml);
Debug.WriteLine(xml.GetXml());

// Sample response:

// <AssumeRoleResponse xmlns="https://sts.amazonaws.com/doc/2011-06-15/">
//   <AssumeRoleResult>
//   <SourceIdentity>Alice</SourceIdentity>
//     <AssumedRoleUser>
//       <Arn>arn:aws:sts::123456789012:assumed-role/demo/TestAR</Arn>
//       <AssumedRoleId>ARO123EXAMPLE123:TestAR</AssumedRoleId>
//     </AssumedRoleUser>
//     <Credentials>
//       <AccessKeyId>ASIAIOSFODNN7EXAMPLE</AccessKeyId>
//       <SecretAccessKey>wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY</SecretAccessKey>
//       <SessionToken>
//        AQoDYXdzEPT//////////wEXAMPLEtc764bNrC9SAPBSM22wDOk4x4HIZ8j4FZTwdQW
//        LWsKWHGBuFqwAeMicRXmxfpSPfIeoIYRqTflfKD8YUuwthAx7mSEI/qkPpKPi/kMcGd
//        QrmGdeehM4IC1NtBmUpp2wUE8phUZampKsburEDy0KPkyQDYwT7WZ0wq5VSXDvp75YU
//        9HFvlRd8Tx6q6fE8YQcHNVXAkiY9q6d+xo0rKwT38xVqr7ZD0u0iPPkUL64lIZbqBAz
//        +scqKmlzm8FDrypNC9Yjc8fPOLn9FX9KSYvKTr4rvx3iSIlTJabIQwj2ICCR/oLxBA==
//       </SessionToken>
//       <Expiration>2019-11-09T13:34:41Z</Expiration>
//     </Credentials>
//     <PackedPolicySize>6</PackedPolicySize>
//   </AssumeRoleResult>
//   <ResponseMetadata>
//     <RequestId>c6104cbe-af31-11e0-8154-cbc7ccf896c7</RequestId>
//   </ResponseMetadata>
// </AssumeRoleResponse>

// Sample parse code:

string AssumeRoleResponse_xmlns = xml.GetAttrValue("xmlns");
string SourceIdentity = xml.GetChildContent("AssumeRoleResult|SourceIdentity");
string Arn = xml.GetChildContent("AssumeRoleResult|AssumedRoleUser|Arn");
string AssumedRoleId = xml.GetChildContent("AssumeRoleResult|AssumedRoleUser|AssumedRoleId");
string AccessKeyId = xml.GetChildContent("AssumeRoleResult|Credentials|AccessKeyId");
string SecretAccessKey = xml.GetChildContent("AssumeRoleResult|Credentials|SecretAccessKey");
string SessionToken = xml.GetChildContent("AssumeRoleResult|Credentials|SessionToken");
string Expiration = xml.GetChildContent("AssumeRoleResult|Credentials|Expiration");
int PackedPolicySize = xml.GetChildIntValue("AssumeRoleResult|PackedPolicySize");
string RequestId = xml.GetChildContent("ResponseMetadata|RequestId");

// Save the session token XML to a file for use by another Chilkat example..
success = xml.SaveXml("qa_data/tokens/aws_session_token.xml");