from json import dumps
from unittest import mock

from boto3 import client
from moto import mock_aws

from prowler.providers.aws.services.iam.iam_service import IAM
from tests.providers.aws.utils import AWS_REGION_US_EAST_1, set_mocked_aws_provider


class Test_iam_policy_no_full_access_to_kms:
    @mock_aws
    def test_policy_full_access_to_kms(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": "kms:*", "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "FAIL"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} allows 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"


class Test_iam_policy_no_full_access_to_kms_with_double_start:
    @mock_aws
    def test_policy_full_access_to_kms(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": "kms:**", "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "FAIL"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} allows 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"


class Test_iam_policy_no_full_access_to_kms_with_unicode:
    @mock_aws
    def test_policy_full_access_to_kms(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "\u0041llow", "Action": "km\u0073:*", "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "FAIL"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} allows 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"

    @mock_aws
    def test_policy_no_full_access_to_kms(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_no_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": "ec2:*", "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "PASS"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} does not allow 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_no_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"

    @mock_aws
    def test_policy_mixed(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_mixed"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": ["ec2:*", "kms:*"], "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "FAIL"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} allows 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_mixed"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"

    @mock_aws
    def test_policy_full_access_to_kms_through_no_actions(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "NotAction": ["ec2:*", "s3:*"], "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "FAIL"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} allows 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"

    @mock_aws
    def test_policy_full_access_to_limited_kms_key(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_dev_kms"
        policy_document_no_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Action": ["kms:*"],
                    "Resource": f"arn:aws:kms:{AWS_REGION_US_EAST_1}:123456789012:alias/dev-key",
                },
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_no_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "PASS"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} does not allow 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_dev_kms"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"

    @mock_aws
    def test_policy_no_full_access_to_kms_through_no_actions(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_no_kms_full"
        policy_document_no_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "NotAction": ["kms:*"], "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_no_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "PASS"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} does not allow 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_no_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"

    @mock_aws
    def test_unattached_policy_skipped_when_scan_unused_services_disabled(self):
        aws_provider = set_mocked_aws_provider(
            [AWS_REGION_US_EAST_1], scan_unused_services=False
        )
        iam_client = client("iam")
        policy_name = "unattached_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": "kms:*", "Resource": "*"},
            ],
        }
        iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result == []

    @mock_aws
    def test_attached_policy_fails_when_scan_unused_services_disabled(self):
        aws_provider = set_mocked_aws_provider(
            [AWS_REGION_US_EAST_1], scan_unused_services=False
        )
        iam_client = client("iam")
        user_name = "test_user_kms"
        policy_name = "attached_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": "kms:*", "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]
        iam_client.create_user(UserName=user_name)
        iam_client.attach_user_policy(UserName=user_name, PolicyArn=arn)

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert len(result) == 1
                assert result[0].status == "FAIL"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} allows 'kms:*' privileges."
                )
                assert result[0].resource_arn == arn

    @mock_aws
    def test_policy_full_access_and_full_deny_to_kms(self):
        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
        iam_client = client("iam")
        policy_name = "policy_no_kms_full"
        policy_document_full_access = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Action": "kms:*", "Resource": "*"},
                {"Effect": "Deny", "Action": "kms:*", "Resource": "*"},
            ],
        }
        arn = iam_client.create_policy(
            PolicyName=policy_name, PolicyDocument=dumps(policy_document_full_access)
        )["Policy"]["Arn"]

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms.iam_client",
                new=IAM(aws_provider),
            ):
                # Test Check
                from prowler.providers.aws.services.iam.iam_policy_no_full_access_to_kms.iam_policy_no_full_access_to_kms import (
                    iam_policy_no_full_access_to_kms,
                )

                check = iam_policy_no_full_access_to_kms()
                result = check.execute()
                assert result[0].status == "PASS"
                assert (
                    result[0].status_extended
                    == f"Custom Policy {policy_name} does not allow 'kms:*' privileges."
                )
                assert result[0].resource_id == "policy_no_kms_full"
                assert result[0].resource_arn == arn
                assert result[0].region == "us-east-1"
