AWS Tools for Windows PowerShell
Command Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Synopsis

Calls the AWS Identity and Access Management SimulateCustomPolicy API operation.

Syntax

Test-IAMCustomPolicy
-ActionName <String[]>
-CallerArn <String>
-ContextEntry <ContextEntry[]>
-PolicyInputList <String[]>
-ResourceArn <String[]>
-ResourceHandlingOption <String>
-ResourceOwner <String>
-ResourcePolicy <String>
-Marker <String>
-MaxItem <Int32>
-Select <String>
-NoAutoIteration <SwitchParameter>

Description

Simulate how a set of IAM policies and optionally a resource-based policy works with a list of API operations and AWS resources to determine the policies' effective permissions. The policies are provided as strings. The simulation does not perform the API operations; it only checks the authorization to determine if the simulated policies allow or deny the operations. If you want to simulate existing policies attached to an IAM user, group, or role, use SimulatePrincipalPolicy instead. Context keys are variables maintained by AWS and its services that provide details about the context of an API query request. You can use the Condition element of an IAM policy to evaluate context keys. To get the list of context keys that the policies require for correct simulation, use GetContextKeysForCustomPolicy. If the output is long, you can use MaxItems and Marker parameters to paginate the results.

This cmdlet automatically pages all available results to the pipeline - parameters related to iteration are only needed if you want to manually control the paginated output. To disable autopagination, use -NoAutoIteration.

Parameters

-ActionName <String[]>
A list of names of API operations to evaluate in the simulation. Each operation is evaluated against each resource. Each operation must include the service identifier, such as iam:CreateUser. This operation does not support using wildcards (*) in an action name.
Required?True
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesActionNames
-CallerArn <String>
The ARN of the IAM user that you want to use as the simulated caller of the API operations. CallerArn is required if you include a ResourcePolicy so that the policy's Principal element has a value to use in evaluating the policy.You can specify only the ARN of an IAM user. You cannot specify the ARN of an assumed role, federated user, or a service principal.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-ContextEntry <ContextEntry[]>
A list of context keys and corresponding values for the simulation to use. Whenever a context key is evaluated in one of the simulated IAM permissions policies, the corresponding value is supplied.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesContextEntries
-Marker <String>
Use this parameter only when paginating results and only after you receive a response indicating that the results are truncated. Set it to the value of the Marker element in the response that you received to indicate where the next call should start.
Note: This parameter is only used if you are manually controlling output pagination of the service API call.
In order to manually control output pagination, use '-Marker $null' for the first call and '-Marker $AWSHistory.LastServiceResponse.Marker' for subsequent calls.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesNextToken
-MaxItem <Int32>
Use this only when paginating results to indicate the maximum number of items you want in the response. If additional items exist beyond the maximum you specify, the IsTruncated response element is true.If you do not include this parameter, the number of items defaults to 100. Note that IAM might return fewer results, even when there are more results available. In that case, the IsTruncated response element returns true, and Marker contains a value to include in the subsequent call that tells the service where to continue from.
Note: In AWSPowerShell and AWSPowerShell.NetCore this parameter is used to limit the total number of items returned by the cmdlet.
In AWS.Tools this parameter is simply passed to the service to specify how many items should be returned by each service call.
Pipe the output of this cmdlet into Select-Object -First to terminate retrieving data pages early and control the number of items returned.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesMaxItems
-NoAutoIteration <SwitchParameter>
By default the cmdlet will auto-iterate and retrieve all results to the pipeline by performing multiple service calls. If set, the cmdlet will retrieve only the next 'page' of results using the value of Marker as the start point.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-PolicyInputList <String[]>
A list of policy documents to include in the simulation. Each document is specified as a string containing the complete, valid JSON text of an IAM policy. Do not include any resource-based policies in this parameter. Any resource-based policy must be submitted with the ResourcePolicy parameter. The policies cannot be "scope-down" policies, such as you could include in a call to GetFederationToken or one of the AssumeRole API operations. In other words, do not use policies designed to restrict what a user can do while using the temporary credentials.The regex pattern used to validate this parameter is a string of characters consisting of the following:
  • Any printable ASCII character ranging from the space character (\u0020) through the end of the ASCII character range
  • The printable characters in the Basic Latin and Latin-1 Supplement character set (through \u00FF)
  • The special characters tab (\u0009), line feed (\u000A), and carriage return (\u000D)
Required?True
Position?Named
Accept pipeline input?True (ByPropertyName)
-ResourceArn <String[]>
A list of ARNs of AWS resources to include in the simulation. If this parameter is not provided, then the value defaults to * (all resources). Each API in the ActionNames parameter is evaluated for each resource in this list. The simulation determines the access result (allowed or denied) of each combination and reports it in the response.The simulation does not automatically retrieve policies for the specified resources. If you want to include a resource policy in the simulation, then you must include the policy as a string in the ResourcePolicy parameter.If you include a ResourcePolicy, then it must be applicable to all of the resources included in the simulation or you receive an invalid input error.For more information about ARNs, see Amazon Resource Names (ARNs) and AWS Service Namespaces in the AWS General Reference.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesResourceArns
-ResourceHandlingOption <String>
Specifies the type of simulation to run. Different API operations that support resource-based policies require different combinations of resources. By specifying the type of simulation to run, you enable the policy simulator to enforce the presence of the required resources to ensure reliable simulation results. If your simulation does not match one of the following scenarios, then you can omit this parameter. The following list shows each of the supported scenario values and the resources that you must define to run the simulation.Each of the EC2 scenarios requires that you specify instance, image, and security-group resources. If your scenario includes an EBS volume, then you must specify that volume as a resource. If the EC2 scenario includes VPC, then you must supply the network-interface resource. If it includes an IP subnet, then you must specify the subnet resource. For more information on the EC2 scenario options, see Supported Platforms in the Amazon EC2 User Guide.
  • EC2-Classic-InstanceStoreinstance, image, security-group
  • EC2-Classic-EBSinstance, image, security-group, volume
  • EC2-VPC-InstanceStoreinstance, image, security-group, network-interface
  • EC2-VPC-InstanceStore-Subnetinstance, image, security-group, network-interface, subnet
  • EC2-VPC-EBSinstance, image, security-group, network-interface, volume
  • EC2-VPC-EBS-Subnetinstance, image, security-group, network-interface, subnet, volume
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-ResourceOwner <String>
An ARN representing the AWS account ID that specifies the owner of any simulated resource that does not identify its owner in the resource ARN. Examples of resource ARNs include an S3 bucket or object. If ResourceOwner is specified, it is also used as the account owner of any ResourcePolicy included in the simulation. If the ResourceOwner parameter is not specified, then the owner of the resources and the resource policy defaults to the account of the identity provided in CallerArn. This parameter is required only if you specify a resource-based policy and account that owns the resource is different from the account that owns the simulated calling user CallerArn.The ARN for an account uses the following syntax: arn:aws:iam::AWS-account-ID:root. For example, to represent the account with the 112233445566 ID, use the following ARN: arn:aws:iam::112233445566-ID:root.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-ResourcePolicy <String>
A resource-based policy to include in the simulation provided as a string. Each resource in the simulation is treated as if it had this policy attached. You can include only one resource-based policy in a simulation.The regex pattern used to validate this parameter is a string of characters consisting of the following:
  • Any printable ASCII character ranging from the space character (\u0020) through the end of the ASCII character range
  • The printable characters in the Basic Latin and Latin-1 Supplement character set (through \u00FF)
  • The special characters tab (\u0009), line feed (\u000A), and carriage return (\u000D)
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-Select <String>
Use the -Select parameter to control the cmdlet output. The default value is 'EvaluationResults'. Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.IdentityManagement.Model.SimulateCustomPolicyResponse). Specifying the name of a property of type Amazon.IdentityManagement.Model.SimulateCustomPolicyResponse will result in that property being returned. Specifying -Select '^ParameterName' will result in the cmdlet returning the selected cmdlet parameter value.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)

Common Credential and Region Parameters

-AccessKey <String>
The AWS access key for the user account. This can be a temporary access key if the corresponding session token is supplied to the -SessionToken parameter.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesAK
-Credential <AWSCredentials>
An AWSCredentials object instance containing access and secret key information, and optionally a token for session-based credentials.
Required?False
Position?Named
Accept pipeline input?True (ByValue, ByPropertyName)
-EndpointUrl <String>
The endpoint to make the call against.Note: This parameter is primarily for internal AWS use and is not required/should not be specified for normal usage. The cmdlets normally determine which endpoint to call based on the region specified to the -Region parameter or set as default in the shell (via Set-DefaultAWSRegion). Only specify this parameter if you must direct the call to a specific custom endpoint.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-NetworkCredential <PSCredential>
Used with SAML-based authentication when ProfileName references a SAML role profile. Contains the network credentials to be supplied during authentication with the configured identity provider's endpoint. This parameter is not required if the user's default network identity can or should be used during authentication.
Required?False
Position?Named
Accept pipeline input?True (ByValue, ByPropertyName)
-ProfileLocation <String>
Used to specify the name and location of the ini-format credential file (shared with the AWS CLI and other AWS SDKs)If this optional parameter is omitted this cmdlet will search the encrypted credential file used by the AWS SDK for .NET and AWS Toolkit for Visual Studio first. If the profile is not found then the cmdlet will search in the ini-format credential file at the default location: (user's home directory)\.aws\credentials.If this parameter is specified then this cmdlet will only search the ini-format credential file at the location given.As the current folder can vary in a shell or during script execution it is advised that you use specify a fully qualified path instead of a relative path.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesAWSProfilesLocation, ProfilesLocation
-ProfileName <String>
The user-defined name of an AWS credentials or SAML-based role profile containing credential information. The profile is expected to be found in the secure credential file shared with the AWS SDK for .NET and AWS Toolkit for Visual Studio. You can also specify the name of a profile stored in the .ini-format credential file used with the AWS CLI and other AWS SDKs.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesStoredCredentials, AWSProfileName
-Region <Object>
The system name of an AWS region or an AWSRegion instance. This governs the endpoint that will be used when calling service operations. Note that the AWS resources referenced in a call are usually region-specific.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesRegionToCall
-SecretKey <String>
The AWS secret key for the user account. This can be a temporary secret key if the corresponding session token is supplied to the -SessionToken parameter.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSK, SecretAccessKey
-SessionToken <String>
The session token if the access and secret keys are temporary session-based credentials.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesST

Outputs

Amazon.IdentityManagement.Model.EvaluationResult or Amazon.IdentityManagement.Model.SimulateCustomPolicyResponse
This cmdlet returns a collection of Amazon.IdentityManagement.Model.EvaluationResult objects. The service call response (type Amazon.IdentityManagement.Model.SimulateCustomPolicyResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack.
User Guide
Service API Reference
AWS Tools for PowerShell User Guide

Supported Version

AWS Tools for PowerShell: 2.x.y.z