(Unicode 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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#include <C_CkRestW.h>
#include <C_CkAuthAwsW.h>
#include <C_CkXmlW.h>

void ChilkatSample(void)
    {
    HCkRestW rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    BOOL success;
    HCkAuthAwsW authAws;
    const wchar_t *responseXml;
    HCkXmlW xml;
    const wchar_t *AssumeRoleResponse_xmlns;
    const wchar_t *SourceIdentity;
    const wchar_t *Arn;
    const wchar_t *AssumedRoleId;
    const wchar_t *AccessKeyId;
    const wchar_t *SecretAccessKey;
    const wchar_t *SessionToken;
    const wchar_t *Expiration;
    int PackedPolicySize;
    const wchar_t *RequestId;

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

    rest = CkRestW_Create();

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

    // Provide AWS credentials for the REST call.
    authAws = CkAuthAwsW_Create();
    CkAuthAwsW_putAccessKey(authAws,L"AWS_ACCESS_KEY");
    CkAuthAwsW_putSecretKey(authAws,L"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
    CkAuthAwsW_putRegion(authAws,L"us-west-2");
    CkAuthAwsW_putServiceName(authAws,L"sts");

    CkRestW_SetAuthAws(rest,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

    CkRestW_AddQueryParam(rest,L"Version",L"2011-06-15");
    CkRestW_AddQueryParam(rest,L"Action",L"AssumeRole");
    CkRestW_AddQueryParam(rest,L"DurationSeconds",L"3600");

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

    responseXml = CkRestW_fullRequestNoBody(rest,L"GET",L"/");
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkAuthAwsW_Dispose(authAws);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (CkRestW_getResponseStatusCode(rest) != 200) {
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response body: %s\n",responseXml);
        CkRestW_Dispose(rest);
        CkAuthAwsW_Dispose(authAws);
        return;
    }

    // Examine the successful XML response (shown below)
    xml = CkXmlW_Create();
    CkXmlW_LoadXml(xml,responseXml);
    wprintf(L"%s\n",CkXmlW_getXml(xml));

    // 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:

    AssumeRoleResponse_xmlns = CkXmlW_getAttrValue(xml,L"xmlns");
    SourceIdentity = CkXmlW_getChildContent(xml,L"AssumeRoleResult|SourceIdentity");
    Arn = CkXmlW_getChildContent(xml,L"AssumeRoleResult|AssumedRoleUser|Arn");
    AssumedRoleId = CkXmlW_getChildContent(xml,L"AssumeRoleResult|AssumedRoleUser|AssumedRoleId");
    AccessKeyId = CkXmlW_getChildContent(xml,L"AssumeRoleResult|Credentials|AccessKeyId");
    SecretAccessKey = CkXmlW_getChildContent(xml,L"AssumeRoleResult|Credentials|SecretAccessKey");
    SessionToken = CkXmlW_getChildContent(xml,L"AssumeRoleResult|Credentials|SessionToken");
    Expiration = CkXmlW_getChildContent(xml,L"AssumeRoleResult|Credentials|Expiration");
    PackedPolicySize = CkXmlW_GetChildIntValue(xml,L"AssumeRoleResult|PackedPolicySize");
    RequestId = CkXmlW_getChildContent(xml,L"ResponseMetadata|RequestId");

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


    CkRestW_Dispose(rest);
    CkAuthAwsW_Dispose(authAws);
    CkXmlW_Dispose(xml);

    }