Table of Contents

Class PolicyStatement

Namespace
Amazon.CDK.AWS.IAM
Assembly
Amazon.CDK.AWS.IAM.dll

Represents a statement in an IAM policy document.

public class PolicyStatement : DeputyBase
Inheritance
PolicyStatement

Examples

// Add gateway endpoints when creating the VPC
            var vpc = new Vpc(this, "MyVpc", new VpcProps {
                GatewayEndpoints = new Dictionary<string, GatewayVpcEndpointOptions> {
                    { "S3", new GatewayVpcEndpointOptions {
                        Service = GatewayVpcEndpointAwsService.S3
                    } }
                }
            });

            // Alternatively gateway endpoints can be added on the VPC
            var dynamoDbEndpoint = vpc.AddGatewayEndpoint("DynamoDbEndpoint", new GatewayVpcEndpointOptions {
                Service = GatewayVpcEndpointAwsService.DYNAMODB
            });

            // This allows to customize the endpoint policy
            dynamoDbEndpoint.AddToPolicy(
            new PolicyStatement(new PolicyStatementProps {  // Restrict to listing and describing tables
                Principals = new [] { new AnyPrincipal() },
                Actions = new [] { "dynamodb:DescribeTable", "dynamodb:ListTables" },
                Resources = new [] { "*" } }));

            // Add an interface endpoint
            vpc.AddInterfaceEndpoint("EcrDockerEndpoint", new InterfaceVpcEndpointOptions {
                Service = InterfaceVpcEndpointAwsService.ECR_DOCKER
            });

Remarks

ExampleMetadata: lit=test/integ.vpc-endpoint.lit.ts infused

Constructors

PolicyStatement(IPolicyStatementProps?) 

public PolicyStatement(IPolicyStatementProps? props = null)

Parameters

props IPolicyStatementProps

Properties

Actions

The Actions added to this statement.

public virtual string[] Actions { get; }

Property Value

string[]

Conditions

The conditions added to this statement.

public virtual object Conditions { get; }

Property Value

object

Effect

Whether to allow or deny the actions in this statement.

public virtual Effect Effect { get; set; }

Property Value

Effect

HasPrincipal

Indicates if this permission has a "Principal" section.

public virtual bool HasPrincipal { get; }

Property Value

bool

HasResource

Indicates if this permission has at least one resource associated with it.

public virtual bool HasResource { get; }

Property Value

bool

NotActions

The NotActions added to this statement.

public virtual string[] NotActions { get; }

Property Value

string[]

NotPrincipals

The NotPrincipals added to this statement.

public virtual IPrincipal[] NotPrincipals { get; }

Property Value

IPrincipal[]

NotResources

The NotResources added to this statement.

public virtual string[] NotResources { get; }

Property Value

string[]

Principals

The Principals added to this statement.

public virtual IPrincipal[] Principals { get; }

Property Value

IPrincipal[]

Resources

The Resources added to this statement.

public virtual string[] Resources { get; }

Property Value

string[]

Sid

Statement ID for this statement.

public virtual string? Sid { get; set; }

Property Value

string

Methods

AddAccountCondition(string)

Add a condition that limits to a given account.

public virtual void AddAccountCondition(string accountId)

Parameters

accountId string

Remarks

This method can only be called once: subsequent calls will overwrite earlier calls.

AddAccountRootPrincipal()

Adds an AWS account root user principal to this policy statement.

public virtual void AddAccountRootPrincipal()

AddActions(params string[])

Specify allowed actions into the "Action" section of the policy statement.

public virtual void AddActions(params string[] actions)

Parameters

actions string[]

actions that will be allowed.

Remarks

See: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_action.html

AddAllResources()

Adds a "*" resource to this statement.

public virtual void AddAllResources()

AddAnyPrincipal()

Adds all identities in all accounts ("*") to this policy statement.

public virtual void AddAnyPrincipal()

AddArnPrincipal(string)

Specify a principal using the ARN identifier of the principal.

public virtual void AddArnPrincipal(string arn)

Parameters

arn string

ARN identifier of AWS account, IAM user, or IAM role (i.e. arn:aws:iam::123456789012:user/user-name).

Remarks

You cannot specify IAM groups and instance profiles as principals.

AddAwsAccountPrincipal(string)

Specify AWS account ID as the principal entity to the "Principal" section of a policy statement.

public virtual void AddAwsAccountPrincipal(string accountId)

Parameters

accountId string

AddCanonicalUserPrincipal(string)

Adds a canonical user ID principal to this policy document.

public virtual void AddCanonicalUserPrincipal(string canonicalUserId)

Parameters

canonicalUserId string

unique identifier assigned by AWS for every account.

AddCondition(string, object)

Add a condition to the Policy.

public virtual void AddCondition(string key, object value)

Parameters

key string
value object

Remarks

If multiple calls are made to add a condition with the same operator and field, only the last one wins. For example:

PolicyStatement stmt;


stmt.AddCondition("StringEquals", new Dictionary<string, string> { { "aws:SomeField", "1" } });
stmt.AddCondition("StringEquals", new Dictionary<string, string> { { "aws:SomeField", "2" } });

Will end up with the single condition StringEquals: { 'aws:SomeField': '2' }.

If you meant to add a condition to say that the field can be either 1 or 2, write this:

PolicyStatement stmt;


stmt.AddCondition("StringEquals", new Dictionary<string, string[]> { { "aws:SomeField", new [] { "1", "2" } } });

AddConditions(IDictionary<string, object>)

Add multiple conditions to the Policy.

public virtual void AddConditions(IDictionary<string, object> conditions)

Parameters

conditions IDictionary<string, object>

Remarks

See the addCondition function for a caveat on calling this method multiple times.

AddFederatedPrincipal(object, IDictionary<string, object>)

Adds a federated identity provider such as Amazon Cognito to this policy statement.

public virtual void AddFederatedPrincipal(object federated, IDictionary<string, object> conditions)

Parameters

federated object

federated identity provider (i.e. 'cognito-identity.amazonaws.com').

conditions IDictionary<string, object>

The conditions under which the policy is in effect.

AddNotActions(params string[])

Explicitly allow all actions except the specified list of actions into the "NotAction" section of the policy document.

public virtual void AddNotActions(params string[] notActions)

Parameters

notActions string[]

actions that will be denied.

Remarks

See: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_notaction.html

AddNotPrincipals(params IPrincipal[])

Specify principals that is not allowed or denied access to the "NotPrincipal" section of a policy statement.

public virtual void AddNotPrincipals(params IPrincipal[] notPrincipals)

Parameters

notPrincipals IPrincipal[]

IAM principals that will be denied access.

Remarks

See: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_notprincipal.html

AddNotResources(params string[])

Specify resources that this policy statement will not apply to in the "NotResource" section of this policy statement.

public virtual void AddNotResources(params string[] arns)

Parameters

arns string[]

Amazon Resource Names (ARNs) of the resources that this policy statement does not apply to.

Remarks

All resources except the specified list will be matched.

See: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_notresource.html

AddPrincipals(params IPrincipal[])

Adds principals to the "Principal" section of a policy statement.

public virtual void AddPrincipals(params IPrincipal[] principals)

Parameters

principals IPrincipal[]

IAM principals that will be added.

Remarks

See: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_principal.html

AddResources(params string[])

Specify resources that this policy statement applies into the "Resource" section of this policy statement.

public virtual void AddResources(params string[] arns)

Parameters

arns string[]

Amazon Resource Names (ARNs) of the resources that this policy statement applies to.

Remarks

See: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_resource.html

AddServicePrincipal(string, IServicePrincipalOpts?)

Adds a service principal to this policy statement.

public virtual void AddServicePrincipal(string service, IServicePrincipalOpts? opts = null)

Parameters

service string

the service name for which a service principal is requested (e.g: s3.amazonaws.com).

opts IServicePrincipalOpts

options for adding the service principal (such as specifying a principal in a different region).

Copy(IPolicyStatementProps?)

Create a new PolicyStatement with the same exact properties as this one, except for the overrides.

public virtual PolicyStatement Copy(IPolicyStatementProps? overrides = null)

Parameters

overrides IPolicyStatementProps

Returns

PolicyStatement

FromJson(object)

Creates a new PolicyStatement based on the object provided.

public static PolicyStatement FromJson(object obj)

Parameters

obj object

the PolicyStatement in object form.

Returns

PolicyStatement

Remarks

This will accept an object created from the .toJSON() call

ToJSON()

JSON-ify the statement.

public virtual object ToJSON()

Returns

object

Remarks

Used when JSON.stringify() is called

ToStatementJson()

JSON-ify the policy statement.

public virtual object ToStatementJson()

Returns

object

Remarks

Used when JSON.stringify() is called

ToString()

String representation of this policy statement.

public override string ToString()

Returns

string

ValidateForAnyPolicy()

Validate that the policy statement satisfies base requirements for a policy.

public virtual string[] ValidateForAnyPolicy()

Returns

string[]

An array of validation error messages, or an empty array if the statement is valid.

ValidateForIdentityPolicy()

Validate that the policy statement satisfies all requirements for an identity-based policy.

public virtual string[] ValidateForIdentityPolicy()

Returns

string[]

An array of validation error messages, or an empty array if the statement is valid.

ValidateForResourcePolicy()

Validate that the policy statement satisfies all requirements for a resource-based policy.

public virtual string[] ValidateForResourcePolicy()

Returns

string[]

An array of validation error messages, or an empty array if the statement is valid.