File: test_sts.py

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import json
import re
from base64 import b64encode
from datetime import datetime
from unittest.mock import patch

import boto3
import pytest
from botocore.client import ClientError
from freezegun import freeze_time

from moto import mock_aws, settings
from moto.core import DEFAULT_ACCOUNT_ID as ACCOUNT_ID
from moto.sts.responses import MAX_FEDERATION_TOKEN_POLICY_LENGTH, MAX_ROLE_NAME_LENGTH


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_get_session_token():
    client = boto3.client("sts", region_name="us-east-1")
    creds = client.get_session_token(DurationSeconds=903)["Credentials"]

    assert isinstance(creds["Expiration"], datetime)

    if not settings.TEST_SERVER_MODE:
        fdate = creds["Expiration"].strftime("%Y-%m-%dT%H:%M:%S.000Z")
        assert fdate == "2012-01-01T12:15:03.000Z"
    assert creds["SessionToken"] == (
        "AQoEXAMPLEH4aoAH0gNCAPyJxz4BlCFFxWNE1OPTgk5TthT+FvwqnKwRcOIfrR"
        "h3c/LTo6UDdyJwOOvEVPvLXCrrrUtdnniCEXAMPLE/IvU1dYUg2RVAJBanLiHb"
        "4IgRmpRV3zrkuWJOgQs8IZZaIv2BXIa2R4OlgkBN9bkUDNCJiBeb/AXlzBBko7"
        "b15fjrBs2+cTQtpZ3CYWFXG8C5zqx37wnOE49mRl/+OtkIKGO7fAE"
    )
    assert creds["AccessKeyId"] == "AKIAIOSFODNN7EXAMPLE"
    assert creds["SecretAccessKey"] == "wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY"


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_get_federation_token():
    client = boto3.client("sts", region_name="us-east-1")
    token_name = "Bob"
    fed_token = client.get_federation_token(DurationSeconds=903, Name=token_name)
    creds = fed_token["Credentials"]
    fed_user = fed_token["FederatedUser"]

    assert isinstance(creds["Expiration"], datetime)

    if not settings.TEST_SERVER_MODE:
        fdate = creds["Expiration"].strftime("%Y-%m-%dT%H:%M:%S.000Z")
        assert fdate == "2012-01-01T12:15:03.000Z"
    assert creds["SessionToken"] == (
        "AQoDYXdzEPT//////////wEXAMPLEtc764bNrC9SAPBSM22wDOk4x4HIZ8j4FZ"
        "TwdQWLWsKWHGBuFqwAeMicRXmxfpSPfIeoIYRqTflfKD8YUuwthAx7mSEI/qkP"
        "pKPi/kMcGdQrmGdeehM4IC1NtBmUpp2wUE8phUZampKsburEDy0KPkyQDYwT7W"
        "Z0wq5VSXDvp75YU9HFvlRd8Tx6q6fE8YQcHNVXAkiY9q6d+xo0rKwT38xVqr7Z"
        "D0u0iPPkUL64lIZbqBAz+scqKmlzm8FDrypNC9Yjc8fPOLn9FX9KSYvKTr4rvx"
        "3iSIlTJabIQwj2ICCR/oLxBA=="
    )
    assert creds["AccessKeyId"] == "AKIAIOSFODNN7EXAMPLE"
    assert creds["SecretAccessKey"] == "wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY"

    assert fed_user["Arn"] == (f"arn:aws:sts::{ACCOUNT_ID}:federated-user/{token_name}")
    assert fed_user["FederatedUserId"] == f"{ACCOUNT_ID}:{token_name}"


@freeze_time("2012-01-01 12:00:00")
@mock_aws
@pytest.mark.parametrize(
    "region,partition",
    [("us-east-1", "aws"), ("cn-north-1", "aws-cn"), ("us-isob-east-1", "aws-iso-b")],
)
def test_assume_role(region, partition):
    client = boto3.client("sts", region_name=region)
    iam_client = boto3.client("iam", region_name=region)

    session_name = "session-name"
    policy = json.dumps(
        {
            "Statement": [
                {
                    "Sid": "Stmt13690092345534",
                    "Action": ["S3:ListBucket"],
                    "Effect": "Allow",
                    "Resource": ["arn:aws:s3:::foobar-tester"],
                }
            ]
        }
    )
    trust_policy_document = {
        "Version": "2012-10-17",
        "Statement": {
            "Effect": "Allow",
            "Principal": {"AWS": f"arn:aws:iam::{ACCOUNT_ID}:root"},
            "Action": "sts:AssumeRole",
        },
    }
    role_name = "test-role"
    role = iam_client.create_role(
        RoleName="test-role", AssumeRolePolicyDocument=json.dumps(trust_policy_document)
    )["Role"]
    role_id = role["RoleId"]
    role_arn = role["Arn"]
    assume_role_response = client.assume_role(
        RoleArn=role_arn,
        RoleSessionName=session_name,
        Policy=policy,
        DurationSeconds=900,
    )

    credentials = assume_role_response["Credentials"]
    if not settings.TEST_SERVER_MODE:
        assert credentials["Expiration"].isoformat() == "2012-01-01T12:15:00+00:00"
    assert len(credentials["SessionToken"]) == 356
    assert credentials["SessionToken"].startswith("FQoGZXIvYXdzE")
    assert len(credentials["AccessKeyId"]) == 20
    assert credentials["AccessKeyId"].startswith("ASIA")
    assert len(credentials["SecretAccessKey"]) == 40

    assert assume_role_response["AssumedRoleUser"]["Arn"] == (
        f"arn:{partition}:sts::{ACCOUNT_ID}:assumed-role/{role_name}/{session_name}"
    )
    assert assume_role_response["AssumedRoleUser"]["AssumedRoleId"].startswith("AROA")
    assert (
        assume_role_response["AssumedRoleUser"]["AssumedRoleId"].rpartition(":")[0]
        == role_id
    )
    assert assume_role_response["AssumedRoleUser"]["AssumedRoleId"].endswith(
        ":" + session_name
    )
    assert len(assume_role_response["AssumedRoleUser"]["AssumedRoleId"]) == (
        21 + 1 + len(session_name)
    )


@mock_aws
def test_assume_role_with_too_long_role_session_name():
    client = boto3.client("sts", region_name="us-east-1")
    iam_client = boto3.client("iam", region_name="us-east-1")

    session_name = "s" * 65
    trust_policy_document = {
        "Version": "2012-10-17",
        "Statement": {
            "Effect": "Allow",
            "Principal": {"AWS": f"arn:aws:iam::{ACCOUNT_ID}:root"},
            "Action": "sts:AssumeRole",
        },
    }
    role = iam_client.create_role(
        RoleName="test-role", AssumeRolePolicyDocument=json.dumps(trust_policy_document)
    )["Role"]
    role_arn = role["Arn"]
    with pytest.raises(ClientError) as ex:
        client.assume_role(
            RoleArn=role_arn,
            RoleSessionName=session_name,
            DurationSeconds=900,
        )
    assert ex.value.response["Error"]["Code"] == "ValidationError"
    assert str(MAX_ROLE_NAME_LENGTH) in ex.value.response["Error"]["Message"]
    assert session_name in ex.value.response["Error"]["Message"]


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_assume_role_with_saml():
    client = boto3.client("sts", region_name="us-east-1")
    role_name = "test-role"
    provider_name = "TestProvFed"
    fed_identifier = "7ca82df9-1bad-4dd3-9b2b-adb68b554282"
    fed_name = "testuser"
    role_input = f"arn:aws:iam::{ACCOUNT_ID}:role/{role_name}"
    principal_role = f"arn:aws:iam:{ACCOUNT_ID}:saml-provider/{provider_name}"
    saml_assertion = f"""
<?xml version="1.0"?>
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" ID="_00000000-0000-0000-0000-000000000000" Version="2.0" IssueInstant="2012-01-01T12:00:00.000Z" Destination="https://signin.aws.amazon.com/saml" Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified">
  <Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">http://localhost/</Issuer>
  <samlp:Status>
    <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
  </samlp:Status>
  <Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" IssueInstant="2012-12-01T12:00:00.000Z" Version="2.0">
    <Issuer>http://localhost:3000/</Issuer>
    <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
      <ds:SignedInfo>
        <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
        <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
        <ds:Reference URI="#_00000000-0000-0000-0000-000000000000">
          <ds:Transforms>
            <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
          </ds:Transforms>
          <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
          <ds:DigestValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:DigestValue>
        </ds:Reference>
      </ds:SignedInfo>
      <ds:SignatureValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:SignatureValue>
      <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
        <ds:X509Data>
          <ds:X509Certificate>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:X509Certificate>
        </ds:X509Data>
      </KeyInfo>
    </ds:Signature>
    <Subject>
      <NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent">{fed_identifier}</NameID>
      <SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
        <SubjectConfirmationData NotOnOrAfter="2012-01-01T13:00:00.000Z" Recipient="https://signin.aws.amazon.com/saml"/>
      </SubjectConfirmation>
    </Subject>
    <Conditions NotBefore="2012-01-01T12:00:00.000Z" NotOnOrAfter="2012-01-01T13:00:00.000Z">
      <AudienceRestriction>
        <Audience>urn:amazon:webservices</Audience>
      </AudienceRestriction>
    </Conditions>
    <AttributeStatement>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/RoleSessionName">
        <AttributeValue>{fed_name}</AttributeValue>
      </Attribute>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/Role">
        <AttributeValue>arn:aws:iam::{ACCOUNT_ID}:saml-provider/{provider_name},arn:aws:iam::{ACCOUNT_ID}:role/{role_name}</AttributeValue>
      </Attribute>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/SessionDuration">
        <AttributeValue>900</AttributeValue>
      </Attribute>
    </AttributeStatement>
    <AuthnStatement AuthnInstant="2012-01-01T12:00:00.000Z" SessionIndex="_00000000-0000-0000-0000-000000000000">
      <AuthnContext>
        <AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</AuthnContextClassRef>
      </AuthnContext>
    </AuthnStatement>
  </Assertion>
</samlp:Response>""".replace("\n", "")

    assume_role_response = client.assume_role_with_saml(
        RoleArn=role_input,
        PrincipalArn=principal_role,
        SAMLAssertion=b64encode(saml_assertion.encode("utf-8")).decode("utf-8"),
    )

    credentials = assume_role_response["Credentials"]
    if not settings.TEST_SERVER_MODE:
        assert credentials["Expiration"].isoformat() == "2012-01-01T12:15:00+00:00"
    assert len(credentials["SessionToken"]) == 356
    assert credentials["SessionToken"].startswith("FQoGZXIvYXdzE")
    assert len(credentials["AccessKeyId"]) == 20
    assert credentials["AccessKeyId"].startswith("ASIA")
    assert len(credentials["SecretAccessKey"]) == 40

    assert assume_role_response["AssumedRoleUser"]["Arn"] == (
        f"arn:aws:sts::{ACCOUNT_ID}:assumed-role/{role_name}/{fed_name}"
    )
    assert assume_role_response["AssumedRoleUser"]["AssumedRoleId"].startswith("AROA")
    assert assume_role_response["AssumedRoleUser"]["AssumedRoleId"].endswith(
        f":{fed_name}"
    )
    assert len(assume_role_response["AssumedRoleUser"]["AssumedRoleId"]) == (
        21 + 1 + len(f"{fed_name}")
    )


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_assume_role_with_saml_should_not_rely_on_attribute_order():
    client = boto3.client("sts", region_name="us-east-1")
    role_name = "test-role"
    provider_name = "TestProvFed"
    fed_identifier = "7ca82df9-1bad-4dd3-9b2b-adb68b554282"
    fed_name = "testuser"
    role_input = f"arn:aws:iam::{ACCOUNT_ID}:role/{role_name}"
    principal_role = f"arn:aws:iam:{ACCOUNT_ID}:saml-provider/{provider_name}"
    saml_assertion = f"""
<?xml version="1.0"?>
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" ID="_00000000-0000-0000-0000-000000000000" Version="2.0" IssueInstant="2012-01-01T12:00:00.000Z" Destination="https://signin.aws.amazon.com/saml" Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified">
  <Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">http://localhost/</Issuer>
  <samlp:Status>
    <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
  </samlp:Status>
  <Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" IssueInstant="2012-12-01T12:00:00.000Z" Version="2.0">
    <Issuer>http://localhost:3000/</Issuer>
    <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
      <ds:SignedInfo>
        <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
        <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
        <ds:Reference URI="#_00000000-0000-0000-0000-000000000000">
          <ds:Transforms>
            <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
          </ds:Transforms>
          <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
          <ds:DigestValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:DigestValue>
        </ds:Reference>
      </ds:SignedInfo>
      <ds:SignatureValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:SignatureValue>
      <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
        <ds:X509Data>
          <ds:X509Certificate>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:X509Certificate>
        </ds:X509Data>
      </KeyInfo>
    </ds:Signature>
    <Subject>
      <NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent">{fed_identifier}</NameID>
      <SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
        <SubjectConfirmationData NotOnOrAfter="2012-01-01T13:00:00.000Z" Recipient="https://signin.aws.amazon.com/saml"/>
      </SubjectConfirmation>
    </Subject>
    <Conditions NotBefore="2012-01-01T12:00:00.000Z" NotOnOrAfter="2012-01-01T13:00:00.000Z">
      <AudienceRestriction>
        <Audience>urn:amazon:webservices</Audience>
      </AudienceRestriction>
    </Conditions>
    <AttributeStatement>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/Role">
        <AttributeValue>arn:aws:iam::{ACCOUNT_ID}:saml-provider/{provider_name},arn:aws:iam::{ACCOUNT_ID}:role/{role_name}</AttributeValue>
      </Attribute>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/SessionDuration">
        <AttributeValue>900</AttributeValue>
      </Attribute>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/RoleSessionName">
        <AttributeValue>{fed_name}</AttributeValue>
      </Attribute>
    </AttributeStatement>
    <AuthnStatement AuthnInstant="2012-01-01T12:00:00.000Z" SessionIndex="_00000000-0000-0000-0000-000000000000">
      <AuthnContext>
        <AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</AuthnContextClassRef>
      </AuthnContext>
    </AuthnStatement>
  </Assertion>
</samlp:Response>""".replace("\n", "")

    assume_role_response = client.assume_role_with_saml(
        RoleArn=role_input,
        PrincipalArn=principal_role,
        SAMLAssertion=b64encode(saml_assertion.encode("utf-8")).decode("utf-8"),
    )

    credentials = assume_role_response["Credentials"]
    if not settings.TEST_SERVER_MODE:
        assert credentials["Expiration"].isoformat() == "2012-01-01T12:15:00+00:00"

    assert assume_role_response["AssumedRoleUser"]["Arn"] == (
        f"arn:aws:sts::{ACCOUNT_ID}:assumed-role/{role_name}/{fed_name}"
    )


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_assume_role_with_saml_should_respect_xml_namespaces():
    client = boto3.client("sts", region_name="us-east-1")
    role_name = "test-role"
    provider_name = "TestProvFed"
    fed_identifier = "7ca82df9-1bad-4dd3-9b2b-adb68b554282"
    fed_name = "testuser"
    role_input = f"arn:aws:iam::{ACCOUNT_ID}:role/{role_name}"
    principal_role = f"arn:aws:iam:{ACCOUNT_ID}:saml-provider/{provider_name}"
    saml_assertion = f"""
<?xml version="1.0"?>
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" Version="2.0" IssueInstant="2012-01-01T12:00:00.000Z" Destination="https://signin.aws.amazon.com/saml" Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified">
  <saml:Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">http://localhost/</saml:Issuer>
  <samlp:Status>
    <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
  </samlp:Status>
  <saml:Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" IssueInstant="2012-12-01T12:00:00.000Z" Version="2.0">
    <saml:Issuer>http://localhost:3000/</saml:Issuer>
    <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
      <ds:SignedInfo>
        <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
        <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
        <ds:Reference URI="#_00000000-0000-0000-0000-000000000000">
          <ds:Transforms>
            <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
          </ds:Transforms>
          <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
          <ds:DigestValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:DigestValue>
        </ds:Reference>
      </ds:SignedInfo>
      <ds:SignatureValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:SignatureValue>
      <ds:KeyInfo>
        <ds:X509Data>
          <ds:X509Certificate>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:X509Certificate>
        </ds:X509Data>
      </ds:KeyInfo>
    </ds:Signature>
    <saml:Subject>
      <saml:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent">{fed_identifier}</saml:NameID>
      <saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
        <saml:SubjectConfirmationData NotOnOrAfter="2012-01-01T13:00:00.000Z" Recipient="https://signin.aws.amazon.com/saml"/>
      </saml:SubjectConfirmation>
    </saml:Subject>
    <saml:Conditions NotBefore="2012-01-01T12:00:00.000Z" NotOnOrAfter="2012-01-01T13:00:00.000Z">
      <saml:AudienceRestriction>
        <Audience>urn:amazon:webservices</Audience>
      </saml:AudienceRestriction>
    </saml:Conditions>
    <saml:AttributeStatement>
      <saml:Attribute Name="https://aws.amazon.com/SAML/Attributes/RoleSessionName">
        <saml:AttributeValue>{fed_name}</saml:AttributeValue>
      </saml:Attribute>
      <saml:Attribute Name="https://aws.amazon.com/SAML/Attributes/Role">
        <saml:AttributeValue>arn:aws:iam::{ACCOUNT_ID}:saml-provider/{provider_name},arn:aws:iam::{ACCOUNT_ID}:role/{role_name}</saml:AttributeValue>
      </saml:Attribute>
      <saml:Attribute Name="https://aws.amazon.com/SAML/Attributes/SessionDuration">
        <saml:AttributeValue>900</saml:AttributeValue>
      </saml:Attribute>
    </saml:AttributeStatement>
    <saml:AuthnStatement AuthnInstant="2012-01-01T12:00:00.000Z" SessionIndex="_00000000-0000-0000-0000-000000000000">
      <saml:AuthnContext>
        <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
      </saml:AuthnContext>
    </saml:AuthnStatement>
  </saml:Assertion>
</samlp:Response>""".replace("\n", "")

    assume_role_response = client.assume_role_with_saml(
        RoleArn=role_input,
        PrincipalArn=principal_role,
        SAMLAssertion=b64encode(saml_assertion.encode("utf-8")).decode("utf-8"),
    )

    credentials = assume_role_response["Credentials"]
    if not settings.TEST_SERVER_MODE:
        assert credentials["Expiration"].isoformat() == "2012-01-01T12:15:00+00:00"

    assert assume_role_response["AssumedRoleUser"]["Arn"] == (
        f"arn:aws:sts::{ACCOUNT_ID}:assumed-role/{role_name}/{fed_name}"
    )


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_assume_role_with_saml_when_xml_tag_contains_xmlns_attributes():
    """Test assume role with saml when xml tag contains xmlns attributes.

    Sssume role with saml should retrieve attribute value when xml tag
    contains xmlns attributes.
    """
    client = boto3.client("sts", region_name="us-east-1")
    role_name = "test-role"
    provider_name = "TestProvFed"
    fed_identifier = "7ca82df9-1bad-4dd3-9b2b-adb68b554282"
    fed_name = "testuser"
    role_input = f"arn:aws:iam::{ACCOUNT_ID}:role/{role_name}"
    principal_role = f"arn:aws:iam:{ACCOUNT_ID}:saml-provider/{provider_name}"
    saml_assertion = f"""
<?xml version="1.0"?>
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" Version="2.0" IssueInstant="2012-01-01T12:00:00.000Z" Destination="https://signin.aws.amazon.com/saml" Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified">
  <saml:Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">http://localhost/</saml:Issuer>
  <samlp:Status>
    <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
  </samlp:Status>
  <saml:Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" IssueInstant="2012-12-01T12:00:00.000Z" Version="2.0">
    <saml:Issuer>http://localhost:3000/</saml:Issuer>
    <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
      <ds:SignedInfo>
        <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
        <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
        <ds:Reference URI="#_00000000-0000-0000-0000-000000000000">
          <ds:Transforms>
            <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
          </ds:Transforms>
          <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
          <ds:DigestValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:DigestValue>
        </ds:Reference>
      </ds:SignedInfo>
      <ds:SignatureValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:SignatureValue>
      <ds:KeyInfo>
        <ds:X509Data>
          <ds:X509Certificate>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:X509Certificate>
        </ds:X509Data>
      </ds:KeyInfo>
    </ds:Signature>
    <saml:Subject>
      <saml:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent">{fed_identifier}</saml:NameID>
      <saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
        <saml:SubjectConfirmationData NotOnOrAfter="2012-01-01T13:00:00.000Z" Recipient="https://signin.aws.amazon.com/saml"/>
      </saml:SubjectConfirmation>
    </saml:Subject>
    <saml:Conditions NotBefore="2012-01-01T12:00:00.000Z" NotOnOrAfter="2012-01-01T13:00:00.000Z">
      <saml:AudienceRestriction>
        <Audience>urn:amazon:webservices</Audience>
      </saml:AudienceRestriction>
    </saml:Conditions>
    <saml:AttributeStatement>
      <saml:Attribute Name="https://aws.amazon.com/SAML/Attributes/RoleSessionName">
        <saml:AttributeValue xmlns:xs="http://www.w3.org/2001/XMLSchema"
                             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                             xsi:type="xs:string">{fed_name}</saml:AttributeValue>
      </saml:Attribute>
      <saml:Attribute Name="https://aws.amazon.com/SAML/Attributes/Role">
        <saml:AttributeValue xmlns:xs="http://www.w3.org/2001/XMLSchema"
                             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                             xsi:type="xs:string">arn:aws:iam::{ACCOUNT_ID}:saml-provider/{provider_name},arn:aws:iam::{ACCOUNT_ID}:role/{role_name}</saml:AttributeValue>
      </saml:Attribute>
      <saml:Attribute Name="https://aws.amazon.com/SAML/Attributes/SessionDuration">
        <saml:AttributeValue xmlns:xs="http://www.w3.org/2001/XMLSchema"
                             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                             xsi:type="xs:string">900</saml:AttributeValue>
      </saml:Attribute>
    </saml:AttributeStatement>
    <saml:AuthnStatement AuthnInstant="2012-01-01T12:00:00.000Z" SessionIndex="_00000000-0000-0000-0000-000000000000">
      <saml:AuthnContext>
        <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
      </saml:AuthnContext>
    </saml:AuthnStatement>
  </saml:Assertion>
</samlp:Response>""".replace("\n", "")

    assume_role_response = client.assume_role_with_saml(
        RoleArn=role_input,
        PrincipalArn=principal_role,
        SAMLAssertion=b64encode(saml_assertion.encode("utf-8")).decode("utf-8"),
    )

    credentials = assume_role_response["Credentials"]
    if not settings.TEST_SERVER_MODE:
        assert credentials["Expiration"].isoformat() == "2012-01-01T12:15:00+00:00"

    assert assume_role_response["AssumedRoleUser"]["Arn"] == (
        f"arn:aws:sts::{ACCOUNT_ID}:assumed-role/{role_name}/{fed_name}"
    )


@freeze_time("2012-01-01 12:00:00")
@mock_aws
def test_assume_role_with_saml_when_saml_attribute_not_provided():
    """Test session duration when saml attribute are not provided.

    Assume role should default the session duration to 3600 seconds when
    a saml attribute is not provided.
    """
    client = boto3.client("sts", region_name="us-east-1")
    role_name = "test-role"
    provider_name = "TestProvFed"
    fed_identifier = "7ca82df9-1bad-4dd3-9b2b-adb68b554282"
    fed_name = "testuser"
    role_input = f"arn:aws:iam::{ACCOUNT_ID}:role/{role_name}"
    principal_role = f"arn:aws:iam:{ACCOUNT_ID}:saml-provider/{provider_name}"
    saml_assertion = f"""
<?xml version="1.0"?>
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" ID="_00000000-0000-0000-0000-000000000000" Version="2.0" IssueInstant="2012-01-01T12:00:00.000Z" Destination="https://signin.aws.amazon.com/saml" Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified">
  <Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">http://localhost/</Issuer>
  <samlp:Status>
    <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
  </samlp:Status>
  <Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" ID="_00000000-0000-0000-0000-000000000000" IssueInstant="2012-12-01T12:00:00.000Z" Version="2.0">
    <Issuer>http://localhost:3000/</Issuer>
    <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
      <ds:SignedInfo>
        <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
        <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
        <ds:Reference URI="#_00000000-0000-0000-0000-000000000000">
          <ds:Transforms>
            <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
          </ds:Transforms>
          <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
          <ds:DigestValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:DigestValue>
        </ds:Reference>
      </ds:SignedInfo>
      <ds:SignatureValue>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:SignatureValue>
      <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
        <ds:X509Data>
          <ds:X509Certificate>NTIyMzk0ZGI4MjI0ZjI5ZGNhYjkyOGQyZGQ1NTZjODViZjk5YTY4ODFjOWRjNjkyYzZmODY2ZDQ4NjlkZjY3YSAgLQo=</ds:X509Certificate>
        </ds:X509Data>
      </KeyInfo>
    </ds:Signature>
    <Subject>
      <NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent">{fed_identifier}</NameID>
      <SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
        <SubjectConfirmationData NotOnOrAfter="2012-01-01T13:00:00.000Z" Recipient="https://signin.aws.amazon.com/saml"/>
      </SubjectConfirmation>
    </Subject>
    <Conditions NotBefore="2012-01-01T12:00:00.000Z" NotOnOrAfter="2012-01-01T13:00:00.000Z">
      <AudienceRestriction>
        <Audience>urn:amazon:webservices</Audience>
      </AudienceRestriction>
    </Conditions>
    <AttributeStatement>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/Role">
        <AttributeValue>arn:aws:iam::{ACCOUNT_ID}:saml-provider/{provider_name},arn:aws:iam::{ACCOUNT_ID}:role/{role_name}</AttributeValue>
      </Attribute>
      <Attribute Name="https://aws.amazon.com/SAML/Attributes/RoleSessionName">
        <AttributeValue>{fed_name}</AttributeValue>
      </Attribute>
    </AttributeStatement>
    <AuthnStatement AuthnInstant="2012-01-01T12:00:00.000Z" SessionIndex="_00000000-0000-0000-0000-000000000000">
      <AuthnContext>
        <AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</AuthnContextClassRef>
      </AuthnContext>
    </AuthnStatement>
  </Assertion>
</samlp:Response>""".replace("\n", "")

    assume_role_response = client.assume_role_with_saml(
        RoleArn=role_input,
        PrincipalArn=principal_role,
        SAMLAssertion=b64encode(saml_assertion.encode("utf-8")).decode("utf-8"),
    )

    credentials = assume_role_response["Credentials"]
    assert "Expiration" in credentials
    if not settings.TEST_SERVER_MODE:
        assert credentials["Expiration"].isoformat() == "2012-01-01T13:00:00+00:00"


@freeze_time("2012-01-01 12:00:00")
@mock_aws
@pytest.mark.parametrize(
    "region,partition", [("us-east-1", "aws"), ("cn-north-1", "aws-cn")]
)
def test_assume_role_with_web_identity(region, partition):
    client = boto3.client("sts", region_name=region)

    policy = json.dumps(
        {
            "Statement": [
                {
                    "Sid": "Stmt13690092345534",
                    "Action": ["S3:ListBucket"],
                    "Effect": "Allow",
                    "Resource": ["arn:aws:s3:::foobar-tester"],
                }
            ]
        }
    )
    role_name = "test-role"
    s3_role = f"arn:aws:iam::{ACCOUNT_ID}:role/{role_name}"
    session_name = "session-name"
    role = client.assume_role_with_web_identity(
        RoleArn=s3_role,
        RoleSessionName=session_name,
        WebIdentityToken="????",
        Policy=policy,
        DurationSeconds=903,
    )

    creds = role["Credentials"]
    user = role["AssumedRoleUser"]

    assert isinstance(creds["Expiration"], datetime)

    if not settings.TEST_SERVER_MODE:
        fdate = creds["Expiration"].strftime("%Y-%m-%dT%H:%M:%S.000Z")
        assert fdate == "2012-01-01T12:15:03.000Z"

    assert len(creds["SessionToken"]) == 356
    assert re.match("^FQoGZXIvYXdzE", creds["SessionToken"])
    assert len(creds["AccessKeyId"]) == 20
    assert re.match("^ASIA", creds["AccessKeyId"])
    assert len(creds["SecretAccessKey"]) == 40

    assert user["Arn"] == (
        f"arn:{partition}:sts::{ACCOUNT_ID}:assumed-role/{role_name}/{session_name}"
    )
    assert "session-name" in user["AssumedRoleId"]


@mock_aws
@pytest.mark.parametrize(
    "region,partition", [("us-east-1", "aws"), ("cn-north-1", "aws-cn")]
)
def test_get_caller_identity_with_default_credentials(region, partition):
    identity = boto3.client("sts", region_name=region).get_caller_identity()

    assert identity["Arn"] == f"arn:{partition}:sts::{ACCOUNT_ID}:user/moto"
    assert identity["UserId"] == "AKIAIOSFODNN7EXAMPLE"
    assert identity["Account"] == str(ACCOUNT_ID)


@mock_aws
@pytest.mark.parametrize(
    "region,partition", [("us-east-1", "aws"), ("cn-north-1", "aws-cn")]
)
def test_get_caller_identity_with_iam_user_credentials(region, partition):
    iam_client = boto3.client("iam", region_name=region)
    iam_user_name = "new-user"
    iam_user = iam_client.create_user(UserName=iam_user_name)["User"]
    assert iam_user["Arn"] == f"arn:{partition}:iam::123456789012:user/new-user"
    access_key = iam_client.create_access_key(UserName=iam_user_name)["AccessKey"]

    identity = boto3.client(
        "sts",
        region_name=region,
        aws_access_key_id=access_key["AccessKeyId"],
        aws_secret_access_key=access_key["SecretAccessKey"],
    ).get_caller_identity()

    assert identity["Arn"] == iam_user["Arn"]
    assert identity["UserId"] == iam_user["UserId"]
    assert identity["Account"] == str(ACCOUNT_ID)


@mock_aws
@pytest.mark.parametrize(
    "region,partition", [("us-east-1", "aws"), ("cn-north-1", "aws-cn")]
)
def test_get_caller_identity_with_assumed_role_credentials(region, partition):
    iam_client = boto3.client("iam", region_name=region)
    sts_client = boto3.client("sts", region_name=region)
    iam_role_name = "new-user"
    trust_policy_document = {
        "Version": "2012-10-17",
        "Statement": {
            "Effect": "Allow",
            "Principal": {"AWS": f"arn:aws:iam::{ACCOUNT_ID}:root"},
            "Action": "sts:AssumeRole",
        },
    }
    iam_role_arn = iam_client.role_arn = iam_client.create_role(
        RoleName=iam_role_name,
        AssumeRolePolicyDocument=json.dumps(trust_policy_document),
    )["Role"]["Arn"]
    session_name = "new-session"
    assumed_role = sts_client.assume_role(
        RoleArn=iam_role_arn, RoleSessionName=session_name
    )
    assert (
        assumed_role["AssumedRoleUser"]["Arn"]
        == f"arn:{partition}:sts::123456789012:assumed-role/new-user/new-session"
    )
    access_key = assumed_role["Credentials"]

    identity = boto3.client(
        "sts",
        region_name=region,
        aws_access_key_id=access_key["AccessKeyId"],
        aws_secret_access_key=access_key["SecretAccessKey"],
    ).get_caller_identity()

    assert identity["Arn"] == assumed_role["AssumedRoleUser"]["Arn"]
    assert identity["UserId"] == assumed_role["AssumedRoleUser"]["AssumedRoleId"]
    assert identity["Account"] == str(ACCOUNT_ID)


@mock_aws
def test_federation_token_with_too_long_policy():
    """Test federation token with policy longer than 2048 character fails."""
    cli = boto3.client("sts", region_name="us-east-1")
    resource_tmpl = (
        "arn:aws:s3:::yyyy-xxxxx-cloud-default/my_default_folder/folder-name-%s/*"
    )
    statements = []
    for num in range(30):
        statements.append(
            {
                "Effect": "Allow",
                "Action": ["s3:*"],
                "Resource": resource_tmpl % str(num),
            }
        )
    policy = {"Version": "2012-10-17", "Statement": statements}
    json_policy = json.dumps(policy)
    assert len(json_policy) > MAX_FEDERATION_TOKEN_POLICY_LENGTH

    with pytest.raises(ClientError) as ex:
        cli.get_federation_token(Name="foo", DurationSeconds=3600, Policy=json_policy)
    assert ex.value.response["Error"]["Code"] == "ValidationError"
    assert (
        str(MAX_FEDERATION_TOKEN_POLICY_LENGTH) in ex.value.response["Error"]["Message"]
    )


@patch.dict("os.environ", {"MOTO_ENABLE_ISO_REGIONS": "true"})
@pytest.mark.parametrize("region", ["us-west-2", "cn-northwest-1", "us-isob-east-1"])
@mock_aws
def test_sts_regions(region):
    client = boto3.client("sts", region_name=region)
    resp = client.get_caller_identity()
    assert resp["ResponseMetadata"]["HTTPStatusCode"] == 200

    if region == "us-west-2":
        assert resp["Arn"] == f"arn:aws:sts::{ACCOUNT_ID}:user/moto"
    if region == "cn-northwest-1":
        assert resp["Arn"] == f"arn:aws-cn:sts::{ACCOUNT_ID}:user/moto"
    if region == "us-isob-east-1":
        assert resp["Arn"] == f"arn:aws-iso-b:sts::{ACCOUNT_ID}:user/moto"