将 GetPolicyVersion 与 Amazon SDK 或命令行工具配合使用

要检索有关指定托管策略的指定版本的信息

此示例将返回 ARN 为 arn:aws:iam::123456789012:policy/MyManagedPolicy 的策略 v2 版本的策略文档。

aws iam get-policy-version \
    --policy-arn arn:aws:iam::123456789012:policy/MyPolicy \
    --version-id v2

输出：

{
    "PolicyVersion": {
        "Document": {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Action": "iam:*",
                    "Resource": "*"
                }
            ]
        },
        "VersionId": "v2",
        "IsDefaultVersion": true,
        "CreateDate": "2023-04-11T00:22:54+00:00"
    }
}

有关更多信息，请参阅《Amazon IAM 用户指南》中的 IAM 中的策略和权限。

示例 1：此示例将返回 ARN 为 arn:aws:iam::123456789012:policy/MyManagedPolicy 的策略 v2 版本的策略文档。Document 属性中的策略文档采用 URL 编码，在本示例中使用 UrlDecode .NET 方法进行解码。

$results = Get-IAMPolicyVersion -PolicyArn arn:aws:iam::123456789012:policy/MyManagedPolicy -VersionId v2
$results

输出：

CreateDate             Document                                        IsDefaultVersion     VersionId
----------             --------                                        ----------------     ---------
2/12/2015 9:39:53 AM   %7B%0A%20%20%22Version%22%3A%20%222012-10...    True                 v2

[System.Reflection.Assembly]::LoadWithPartialName("System.Web.HttpUtility")
$policy = [System.Web.HttpUtility]::UrlDecode($results.Document)
$policy
{
  "Version": "2012-10-17",
  "Statement": 
    {
      "Effect": "Allow",
      "Action": "*",
      "Resource": "*"
    }
}

def get_default_policy_statement(policy_arn):
    """
    Gets the statement of the default version of the specified policy.

    :param policy_arn: The ARN of the policy to look up.
    :return: The statement of the default policy version.
    """
    try:
        policy = iam.Policy(policy_arn)
        # To get an attribute of a policy, the SDK first calls get_policy.
        policy_doc = policy.default_version.document
        policy_statement = policy_doc.get("Statement", None)
        logger.info("Got default policy doc for %s.", policy.policy_name)
        logger.info(policy_doc)
    except ClientError:
        logger.exception("Couldn't get default policy statement for %s.", policy_arn)
        raise
    else:
        return policy_statement