Class: Aws::STS::Client

Inherits:
Seahorse::Client::Base show all
Includes:
ClientStubs
Defined in:
lib/aws-sdk-sts/client.rb

Overview

An API client for STS. To construct a client, you need to configure a `:region` and `:credentials`.

client = Aws::STS::Client.new(
  region: region_name,
  credentials: credentials,
  # ...
)

For details on configuring region and credentials see the [developer guide](/sdk-for-ruby/v3/developer-guide/setup-config.html).

See #initialize for a full list of supported configuration options.

Class Attribute Summary collapse

Attributes inherited from Seahorse::Client::Base

#config, #handlers

API Operations collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ClientStubs

#api_requests, #next_stub, #setup_stubbing, #stub_data, #stub_responses

Methods inherited from Seahorse::Client::Base

add_plugin, api, clear_plugins, define, #inspect, new, #operation_names, plugins, remove_plugin, set_api, set_plugins

Methods included from Seahorse::Client::HandlerBuilder

#handle, #handle_request, #handle_response, #handler_for, #new_handler

Constructor Details

#initialize(options) ⇒ Client

Returns a new instance of Client.

Parameters:

  • options (Hash)

Options Hash (options):

  • :credentials (required, Aws::CredentialProvider)

    Your AWS credentials. This can be an instance of any one of the following classes:

    • `Aws::Credentials` - Used for configuring static, non-refreshing credentials.

    • `Aws::SharedCredentials` - Used for loading static credentials from a shared file, such as `~/.aws/config`.

    • `Aws::AssumeRoleCredentials` - Used when you need to assume a role.

    • `Aws::AssumeRoleWebIdentityCredentials` - Used when you need to assume a role after providing credentials via the web.

    • `Aws::SSOCredentials` - Used for loading credentials from AWS SSO using an access token generated from `aws login`.

    • `Aws::ProcessCredentials` - Used for loading credentials from a process that outputs to stdout.

    • `Aws::InstanceProfileCredentials` - Used for loading credentials from an EC2 IMDS on an EC2 instance.

    • `Aws::ECSCredentials` - Used for loading credentials from instances running in ECS.

    • `Aws::CognitoIdentityCredentials` - Used for loading credentials from the Cognito Identity service.

    When `:credentials` are not configured directly, the following locations will be searched for credentials:

    • `Aws.config`

    • The `:access_key_id`, `:secret_access_key`, and `:session_token` options.

    • ENV, ENV

    • `~/.aws/credentials`

    • `~/.aws/config`

    • EC2/ECS IMDS instance profile - When used by default, the timeouts are very aggressive. Construct and pass an instance of `Aws::InstanceProfileCredentails` or `Aws::ECSCredentials` to enable retries and extended timeouts. Instance profile credential fetching can be disabled by setting ENV to true.

  • :region (required, String)

    The AWS region to connect to. The configured `:region` is used to determine the service `:endpoint`. When not passed, a default `:region` is searched for in the following locations:

  • :access_key_id (String)
  • :active_endpoint_cache (Boolean) — default: false

    When set to `true`, a thread polling for endpoints will be running in the background every 60 secs (default). Defaults to `false`.

  • :adaptive_retry_wait_to_fill (Boolean) — default: true

    Used only in `adaptive` retry mode. When true, the request will sleep until there is sufficent client side capacity to retry the request. When false, the request will raise a `RetryCapacityNotAvailableError` and will not retry instead of sleeping.

  • :client_side_monitoring (Boolean) — default: false

    When `true`, client-side metrics will be collected for all API requests from this client.

  • :client_side_monitoring_client_id (String) — default: ""

    Allows you to provide an identifier for this client which will be attached to all generated client side metrics. Defaults to an empty string.

  • :client_side_monitoring_host (String) — default: "127.0.0.1"

    Allows you to specify the DNS hostname or IPv4 or IPv6 address that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_port (Integer) — default: 31000

    Required for publishing client metrics. The port that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_publisher (Aws::ClientSideMonitoring::Publisher) — default: Aws::ClientSideMonitoring::Publisher

    Allows you to provide a custom client-side monitoring publisher class. By default, will use the Client Side Monitoring Agent Publisher.

  • :convert_params (Boolean) — default: true

    When `true`, an attempt is made to coerce request parameters into the required types.

  • :correct_clock_skew (Boolean) — default: true

    Used only in `standard` and adaptive retry modes. Specifies whether to apply a clock skew correction and retry requests with skewed client clocks.

  • :disable_host_prefix_injection (Boolean) — default: false

    Set to true to disable SDK automatically adding host prefix to default service endpoint when available.

  • :endpoint (String)

    The client endpoint is normally constructed from the `:region` option. You should only configure an `:endpoint` when connecting to test or custom endpoints. This should be a valid HTTP(S) URI.

  • :endpoint_cache_max_entries (Integer) — default: 1000

    Used for the maximum size limit of the LRU cache storing endpoints data for endpoint discovery enabled operations. Defaults to 1000.

  • :endpoint_cache_max_threads (Integer) — default: 10

    Used for the maximum threads in use for polling endpoints to be cached, defaults to 10.

  • :endpoint_cache_poll_interval (Integer) — default: 60

    When :endpoint_discovery and :active_endpoint_cache is enabled, Use this option to config the time interval in seconds for making requests fetching endpoints information. Defaults to 60 sec.

  • :endpoint_discovery (Boolean) — default: false

    When set to `true`, endpoint discovery will be enabled for operations when available.

  • :log_formatter (Aws::Log::Formatter) — default: Aws::Log::Formatter.default

    The log formatter.

  • :log_level (Symbol) — default: :info

    The log level to send messages to the `:logger` at.

  • :logger (Logger)

    The Logger instance to send log messages to. If this option is not set, logging will be disabled.

  • :max_attempts (Integer) — default: 3

    An integer representing the maximum number attempts that will be made for a single request, including the initial attempt. For example, setting this value to 5 will result in a request being retried up to 4 times. Used in `standard` and `adaptive` retry modes.

  • :profile (String) — default: "default"

    Used when loading credentials from the shared credentials file at HOME/.aws/credentials. When not specified, 'default' is used.

  • :retry_backoff (Proc)

    A proc or lambda used for backoff. Defaults to 2**retries * retry_base_delay. This option is only used in the `legacy` retry mode.

  • :retry_base_delay (Float) — default: 0.3

    The base delay in seconds used by the default backoff function. This option is only used in the `legacy` retry mode.

  • :retry_jitter (Symbol) — default: :none

    A delay randomiser function used by the default backoff function. Some predefined functions can be referenced by name - :none, :equal, :full, otherwise a Proc that takes and returns a number. This option is only used in the `legacy` retry mode.

    @see www.awsarchitectureblog.com/2015/03/backoff.html

  • :retry_limit (Integer) — default: 3

    The maximum number of times to retry failed requests. Only ~ 500 level server errors and certain ~ 400 level client errors are retried. Generally, these are throttling errors, data checksum errors, networking errors, timeout errors, auth errors, endpoint discovery, and errors from expired credentials. This option is only used in the `legacy` retry mode.

  • :retry_max_delay (Integer) — default: 0

    The maximum number of seconds to delay between retries (0 for no limit) used by the default backoff function. This option is only used in the `legacy` retry mode.

  • :retry_mode (String) — default: "legacy"

    Specifies which retry algorithm to use. Values are:

    • `legacy` - The pre-existing retry behavior. This is default value if no retry mode is provided.

    • `standard` - A standardized set of retry rules across the AWS SDKs. This includes support for retry quotas, which limit the number of unsuccessful retries a client can make.

    • `adaptive` - An experimental retry mode that includes all the functionality of `standard` mode along with automatic client side throttling. This is a provisional mode that may change behavior in the future.

  • :secret_access_key (String)
  • :session_token (String)
  • :sts_regional_endpoints (String) — default: "regional"

    Passing in 'regional' to enable regional endpoint for STS for all supported regions (except 'aws-global'). Using 'legacy' mode will force all legacy regions to resolve to the STS global endpoint.

  • :stub_responses (Boolean) — default: false

    Causes the client to return stubbed responses. By default fake responses are generated and returned. You can specify the response data to return or errors to raise by calling ClientStubs#stub_responses. See ClientStubs for more information.

    ** Please note ** When response stubbing is enabled, no HTTP requests are made, and retries are disabled.

  • :use_dualstack_endpoint (Boolean)

    When set to `true`, dualstack enabled endpoints (with `.aws` TLD) will be used if available.

  • :use_fips_endpoint (Boolean)

    When set to `true`, fips compatible endpoints will be used if available. When a `fips` region is used, the region is normalized and this config is set to `true`.

  • :validate_params (Boolean) — default: true

    When `true`, request parameters are validated before sending the request.

  • :http_proxy (URI::HTTP, String)

    A proxy to send requests through. Formatted like 'proxy.com:123'.

  • :http_open_timeout (Float) — default: 15

    The number of seconds to wait when opening a HTTP session before raising a `Timeout::Error`.

  • :http_read_timeout (Integer) — default: 60

    The default number of seconds to wait for response data. This value can safely be set per-request on the session.

  • :http_idle_timeout (Float) — default: 5

    The number of seconds a connection is allowed to sit idle before it is considered stale. Stale connections are closed and removed from the pool before making a request.

  • :http_continue_timeout (Float) — default: 1

    The number of seconds to wait for a 100-continue response before sending the request body. This option has no effect unless the request has “Expect” header set to “100-continue”. Defaults to `nil` which disables this behaviour. This value can safely be set per request on the session.

  • :http_wire_trace (Boolean) — default: false

    When `true`, HTTP debug output will be sent to the `:logger`.

  • :ssl_verify_peer (Boolean) — default: true

    When `true`, SSL peer certificates are verified when establishing a connection.

  • :ssl_ca_bundle (String)

    Full path to the SSL certificate authority bundle file that should be used when verifying peer certificates. If you do not pass `:ssl_ca_bundle` or `:ssl_ca_directory` the the system default will be used if available.

  • :ssl_ca_directory (String)

    Full path of the directory that contains the unbundled SSL certificate authority files for verifying peer certificates. If you do not pass `:ssl_ca_bundle` or `:ssl_ca_directory` the the system default will be used if available.


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# File 'lib/aws-sdk-sts/client.rb', line 342

def initialize(*args)
  super
end

Class Attribute Details

.identifierObject (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.


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# File 'lib/aws-sdk-sts/client.rb', line 2291

def identifier
  @identifier
end

Class Method Details

.errors_moduleObject

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.


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# File 'lib/aws-sdk-sts/client.rb', line 2294

def errors_module
  Errors
end

Instance Method Details

#assume_role(params = {}) ⇒ Types::AssumeRoleResponse

Returns a set of temporary security credentials that you can use to access Amazon Web Services resources that you might not normally have access to. These temporary credentials consist of an access key ID, a secret access key, and a security token. Typically, you use `AssumeRole` within your account or for cross-account access. For a comparison of `AssumeRole` with other API operations that produce temporary credentials, see [Requesting Temporary Security Credentials] and [Comparing the Amazon Web Services STS API operations] in the *IAM User Guide*.

Permissions

The temporary security credentials created by `AssumeRole` can be used to make API calls to any Amazon Web Services service with the following exception: You cannot call the Amazon Web Services STS `GetFederationToken` or `GetSessionToken` API operations.

(Optional) You can pass inline or managed [session policies] to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

When you create a role, you create two policies: A role trust policy that specifies who can assume the role and a permissions policy that specifies what can be done with the role. You specify the trusted principal who is allowed to assume the role in the role trust policy.

To assume a role from a different account, your Amazon Web Services account must be trusted by the role. The trust relationship is defined in the role's trust policy when the role is created. That trust policy states which accounts are allowed to delegate that access to users in the account.

A user who wants to access a role in a different account must also have permissions that are delegated from the user account administrator. The administrator must attach a policy that allows the user to call `AssumeRole` for the ARN of the role in the other account.

To allow a user to assume a role in the same account, you can do either of the following:

  • Attach a policy to the user that allows the user to call `AssumeRole` (as long as the role's trust policy trusts the account).

  • Add the user as a principal directly in the role's trust policy.

You can do either because the role’s trust policy acts as an IAM resource-based policy. When a resource-based policy grants access to a principal in the same account, no additional identity-based policy is required. For more information about trust policies and resource-based policies, see [IAM Policies] in the *IAM User Guide*.

Tags

(Optional) You can pass tag key-value pairs to your session. These tags are called session tags. For more information about session tags, see [Passing Session Tags in STS] in the *IAM User Guide*.

An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see [Tutorial: Using Tags for Attribute-Based Access Control] in the *IAM User Guide*.

You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see [Chaining Roles with Session Tags] in the *IAM User Guide*.

**Using MFA with AssumeRole**

(Optional) You can include multi-factor authentication (MFA) information when you call `AssumeRole`. This is useful for cross-account scenarios to ensure that the user that assumes the role has been authenticated with an Amazon Web Services MFA device. In that scenario, the trust policy of the role being assumed includes a condition that tests for MFA authentication. If the caller does not include valid MFA information, the request to assume the role is denied. The condition in a trust policy that tests for MFA authentication might look like the following example.

`“Condition”: {“aws:MultiFactorAuthPresent”: true}`

For more information, see [Configuring MFA-Protected API Access] in the *IAM User Guide* guide.

To use MFA with `AssumeRole`, you pass values for the `SerialNumber` and `TokenCode` parameters. The `SerialNumber` value identifies the user's hardware or virtual MFA device. The `TokenCode` is the time-based one-time password (TOTP) that the MFA device produces.

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#stsapi_comparison [3]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session [4]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html [5]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html [6]: docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_attribute-based-access-control.html [7]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html#id_session-tags_role-chaining [8]: docs.aws.amazon.com/IAM/latest/UserGuide/MFAProtectedAPI.html

Examples:

Example: To assume a role


resp = client.assume_role({
  external_id: "123ABC", 
  policy: "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Stmt1\",\"Effect\":\"Allow\",\"Action\":\"s3:ListAllMyBuckets\",\"Resource\":\"*\"}]}", 
  role_arn: "arn:aws:iam::123456789012:role/demo", 
  role_session_name: "testAssumeRoleSession", 
  tags: [
    {
      key: "Project", 
      value: "Unicorn", 
    }, 
    {
      key: "Team", 
      value: "Automation", 
    }, 
    {
      key: "Cost-Center", 
      value: "12345", 
    }, 
  ], 
  transitive_tag_keys: [
    "Project", 
    "Cost-Center", 
  ], 
})

resp.to_h outputs the following:
{
  assumed_role_user: {
    arn: "arn:aws:sts::123456789012:assumed-role/demo/Bob", 
    assumed_role_id: "ARO123EXAMPLE123:Bob", 
  }, 
  credentials: {
    access_key_id: "AKIAIOSFODNN7EXAMPLE", 
    expiration: Time.parse("2011-07-15T23:28:33.359Z"), 
    secret_access_key: "wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY", 
    session_token: "AQoDYXdzEPT//////////wEXAMPLEtc764bNrC9SAPBSM22wDOk4x4HIZ8j4FZTwdQWLWsKWHGBuFqwAeMicRXmxfpSPfIeoIYRqTflfKD8YUuwthAx7mSEI/qkPpKPi/kMcGdQrmGdeehM4IC1NtBmUpp2wUE8phUZampKsburEDy0KPkyQDYwT7WZ0wq5VSXDvp75YU9HFvlRd8Tx6q6fE8YQcHNVXAkiY9q6d+xo0rKwT38xVqr7ZD0u0iPPkUL64lIZbqBAz+scqKmlzm8FDrypNC9Yjc8fPOLn9FX9KSYvKTr4rvx3iSIlTJabIQwj2ICCR/oLxBA==", 
  }, 
  packed_policy_size: 8, 
}

Request syntax with placeholder values


resp = client.assume_role({
  role_arn: "arnType", # required
  role_session_name: "roleSessionNameType", # required
  policy_arns: [
    {
      arn: "arnType",
    },
  ],
  policy: "sessionPolicyDocumentType",
  duration_seconds: 1,
  tags: [
    {
      key: "tagKeyType", # required
      value: "tagValueType", # required
    },
  ],
  transitive_tag_keys: ["tagKeyType"],
  external_id: "externalIdType",
  serial_number: "serialNumberType",
  token_code: "tokenCodeType",
  source_identity: "sourceIdentityType",
})

Response structure


resp.credentials.access_key_id #=> String
resp.credentials.secret_access_key #=> String
resp.credentials.session_token #=> String
resp.credentials.expiration #=> Time
resp.assumed_role_user.assumed_role_id #=> String
resp.assumed_role_user.arn #=> String
resp.packed_policy_size #=> Integer
resp.source_identity #=> String

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :role_arn (required, String)

    The Amazon Resource Name (ARN) of the role to assume.

  • :role_session_name (required, String)

    An identifier for the assumed role session.

    Use the role session name to uniquely identify a session when the same role is assumed by different principals or for different reasons. In cross-account scenarios, the role session name is visible to, and can be logged by the account that owns the role. The role session name is also used in the ARN of the assumed role principal. This means that subsequent cross-account API requests that use the temporary security credentials will expose the role session name to the external account in their CloudTrail logs.

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected]

  • :policy_arns (Array<Types::PolicyDescriptorType>)

    The Amazon Resource Names (ARNs) of the IAM managed policies that you want to use as managed session policies. The policies must exist in the same account as the role.

    This parameter is optional. You can provide up to 10 managed policy ARNs. However, the plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. For more information about ARNs, see [Amazon Resource Names (ARNs) and Amazon Web Services Service Namespaces] in the Amazon Web Services General Reference.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

    [1]: docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :policy (String)

    An IAM policy in JSON format that you want to use as an inline session policy.

    This parameter is optional. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

    The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. The JSON policy characters can be any ASCII character from the space character to the end of the valid character list (\u0020 through \u00FF). It can also include the tab (\u0009), linefeed (\u000A), and carriage return (\u000D) characters.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :duration_seconds (Integer)

    The duration, in seconds, of the role session. The value specified can range from 900 seconds (15 minutes) up to the maximum session duration set for the role. The maximum session duration setting can have a value from 1 hour to 12 hours. If you specify a value higher than this setting or the administrator setting (whichever is lower), the operation fails. For example, if you specify a session duration of 12 hours, but your administrator set the maximum session duration to 6 hours, your operation fails.

    Role chaining limits your Amazon Web Services CLI or Amazon Web Services API role session to a maximum of one hour. When you use the `AssumeRole` API operation to assume a role, you can specify the duration of your role session with the `DurationSeconds` parameter. You can specify a parameter value of up to 43200 seconds (12 hours), depending on the maximum session duration setting for your role. However, if you assume a role using role chaining and provide a `DurationSeconds` parameter value greater than one hour, the operation fails. To learn how to view the maximum value for your role, see [View the Maximum Session Duration Setting for a Role] in the *IAM User Guide*.

    By default, the value is set to `3600` seconds.

    <note markdown=“1”> The `DurationSeconds` parameter is separate from the duration of a console session that you might request using the returned credentials. The request to the federation endpoint for a console sign-in token takes a `SessionDuration` parameter that specifies the maximum length of the console session. For more information, see [Creating a URL that Enables Federated Users to Access the Amazon Web Services Management Console] in the *IAM User Guide*.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html#id_roles_use_view-role-max-session [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_enable-console-custom-url.html

  • :tags (Array<Types::Tag>)

    A list of session tags that you want to pass. Each session tag consists of a key name and an associated value. For more information about session tags, see [Tagging Amazon Web Services STS Sessions] in the *IAM User Guide*.

    This parameter is optional. You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters, and the values can’t exceed 256 characters. For these and additional limits, see [IAM and STS Character Limits] in the *IAM User Guide*.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    You can pass a session tag with the same key as a tag that is already attached to the role. When you do, session tags override a role tag with the same key.

    Tag key–value pairs are not case sensitive, but case is preserved. This means that you cannot have separate `Department` and `department` tag keys. Assume that the role has the `Department`=`Marketing` tag and you pass the `department`=`engineering` session tag. `Department` and `department` are not saved as separate tags, and the session tag passed in the request takes precedence over the role tag.

    Additionally, if you used temporary credentials to perform this operation, the new session inherits any transitive session tags from the calling session. If you pass a session tag with the same key as an inherited tag, the operation fails. To view the inherited tags for a session, see the CloudTrail logs. For more information, see [Viewing Session Tags in CloudTrail] in the *IAM User Guide*.

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-limits.html#reference_iam-limits-entity-length [3]: docs.aws.amazon.com/IAM/latest/UserGuide/session-tags.html#id_session-tags_ctlogs

  • :transitive_tag_keys (Array<String>)

    A list of keys for session tags that you want to set as transitive. If you set a tag key as transitive, the corresponding key and value passes to subsequent sessions in a role chain. For more information, see [Chaining Roles with Session Tags] in the *IAM User Guide*.

    This parameter is optional. When you set session tags as transitive, the session policy and session tags packed binary limit is not affected.

    If you choose not to specify a transitive tag key, then no tags are passed from this session to any subsequent sessions.

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html#id_session-tags_role-chaining

  • :external_id (String)

    A unique identifier that might be required when you assume a role in another account. If the administrator of the account to which the role belongs provided you with an external ID, then provide that value in the `ExternalId` parameter. This value can be any string, such as a passphrase or account number. A cross-account role is usually set up to trust everyone in an account. Therefore, the administrator of the trusting account might send an external ID to the administrator of the trusted account. That way, only someone with the ID can assume the role, rather than everyone in the account. For more information about the external ID, see [How to Use an External ID When Granting Access to Your Amazon Web Services Resources to a Third Party] in the *IAM User Guide*.

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected]:/-

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create_for-user_externalid.html

  • :serial_number (String)

    The identification number of the MFA device that is associated with the user who is making the `AssumeRole` call. Specify this value if the trust policy of the role being assumed includes a condition that requires MFA authentication. The value is either the serial number for a hardware device (such as `GAHT12345678`) or an Amazon Resource Name (ARN) for a virtual device (such as `arn:aws:iam::123456789012:mfa/user`).

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected]

  • :token_code (String)

    The value provided by the MFA device, if the trust policy of the role being assumed requires MFA. (In other words, if the policy includes a condition that tests for MFA). If the role being assumed requires MFA and if the `TokenCode` value is missing or expired, the `AssumeRole` call returns an “access denied” error.

    The format for this parameter, as described by its regex pattern, is a sequence of six numeric digits.

  • :source_identity (String)

    The source identity specified by the principal that is calling the `AssumeRole` operation.

    You can require users to specify a source identity when they assume a role. You do this by using the `sts:SourceIdentity` condition key in a role trust policy. You can use source identity information in CloudTrail logs to determine who took actions with a role. You can use the `aws:SourceIdentity` condition key to further control access to Amazon Web Services resources based on the value of source identity. For more information about using source identity, see [Monitor and control actions taken with assumed roles] in the *IAM User Guide*.

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected] You cannot use a value that begins with the text `aws:`. This prefix is reserved for Amazon Web Services internal use.

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_control-access_monitor.html

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 810

def assume_role(params = {}, options = {})
  req = build_request(:assume_role, params)
  req.send_request(options)
end

#assume_role_with_saml(params = {}) ⇒ Types::AssumeRoleWithSAMLResponse

Returns a set of temporary security credentials for users who have been authenticated via a SAML authentication response. This operation provides a mechanism for tying an enterprise identity store or directory to role-based Amazon Web Services access without user-specific credentials or configuration. For a comparison of `AssumeRoleWithSAML` with the other API operations that produce temporary credentials, see [Requesting Temporary Security Credentials] and [Comparing the Amazon Web Services STS API operations] in the *IAM User Guide*.

The temporary security credentials returned by this operation consist of an access key ID, a secret access key, and a security token. Applications can use these temporary security credentials to sign calls to Amazon Web Services services.

**Session Duration**

By default, the temporary security credentials created by `AssumeRoleWithSAML` last for one hour. However, you can use the optional `DurationSeconds` parameter to specify the duration of your session. Your role session lasts for the duration that you specify, or until the time specified in the SAML authentication response's `SessionNotOnOrAfter` value, whichever is shorter. You can provide a `DurationSeconds` value from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. To learn how to view the maximum value for your role, see [View the Maximum Session Duration Setting for a Role] in the *IAM User Guide*. The maximum session duration limit applies when you use the `AssumeRole*` API operations or the `assume-role*` CLI commands. However the limit does not apply when you use those operations to create a console URL. For more information, see [Using IAM Roles] in the *IAM User Guide*.

<note markdown=“1”> [Role chaining] limits your CLI or Amazon Web Services API role session to a maximum of one hour. When you use the `AssumeRole` API operation to assume a role, you can specify the duration of your role session with the `DurationSeconds` parameter. You can specify a parameter value of up to 43200 seconds (12 hours), depending on the maximum session duration setting for your role. However, if you assume a role using role chaining and provide a `DurationSeconds` parameter value greater than one hour, the operation fails.

</note>

Permissions

The temporary security credentials created by `AssumeRoleWithSAML` can be used to make API calls to any Amazon Web Services service with the following exception: you cannot call the STS `GetFederationToken` or `GetSessionToken` API operations.

(Optional) You can pass inline or managed [session policies] to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

Calling `AssumeRoleWithSAML` does not require the use of Amazon Web Services security credentials. The identity of the caller is validated by using keys in the metadata document that is uploaded for the SAML provider entity for your identity provider.

Calling `AssumeRoleWithSAML` can result in an entry in your CloudTrail logs. The entry includes the value in the `NameID` element of the SAML assertion. We recommend that you use a `NameIDType` that is not associated with any personally identifiable information (PII). For example, you could instead use the persistent identifier (`urn:oasis:names:tc:SAML:2.0:nameid-format:persistent`).

Tags

(Optional) You can configure your IdP to pass attributes into your SAML assertion as session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see [Passing Session Tags in STS] in the *IAM User Guide*.

You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see [IAM and STS Character Limits] in the *IAM User Guide*.

<note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

</note>

You can pass a session tag with the same key as a tag that is attached to the role. When you do, session tags override the role's tags with the same key.

An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see [Tutorial: Using Tags for Attribute-Based Access Control] in the *IAM User Guide*.

You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see [Chaining Roles with Session Tags] in the *IAM User Guide*.

**SAML Configuration**

Before your application can call `AssumeRoleWithSAML`, you must configure your SAML identity provider (IdP) to issue the claims required by Amazon Web Services. Additionally, you must use Identity and Access Management (IAM) to create a SAML provider entity in your Amazon Web Services account that represents your identity provider. You must also create an IAM role that specifies this SAML provider in its trust policy.

For more information, see the following resources:

  • About SAML 2.0-based Federation][11

    in the *IAM User Guide*.

  • Creating SAML Identity Providers][12

    in the *IAM User Guide*.

  • Configuring a Relying Party and Claims][13

    in the *IAM User

    Guide*.

  • Creating a Role for SAML 2.0 Federation][14

    in the *IAM User

    Guide*.

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#stsapi_comparison [3]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html#id_roles_use_view-role-max-session [4]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html [5]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_terms-and-concepts.html#iam-term-role-chaining [6]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session [7]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html [8]: docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-limits.html#reference_iam-limits-entity-length [9]: docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_attribute-based-access-control.html [10]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html#id_session-tags_role-chaining [11]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_saml.html [12]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml.html [13]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_relying-party.html [14]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create_for-idp_saml.html

Examples:

Example: To assume a role using a SAML assertion


resp = client.assume_role_with_saml({
  duration_seconds: 3600, 
  principal_arn: "arn:aws:iam::123456789012:saml-provider/SAML-test", 
  role_arn: "arn:aws:iam::123456789012:role/TestSaml", 
  saml_assertion: "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", 
})

resp.to_h outputs the following:
{
  assumed_role_user: {
    arn: "arn:aws:sts::123456789012:assumed-role/TestSaml", 
    assumed_role_id: "ARO456EXAMPLE789:TestSaml", 
  }, 
  audience: "https://signin.aws.amazon.com/saml", 
  credentials: {
    access_key_id: "ASIAV3ZUEFP6EXAMPLE", 
    expiration: Time.parse("2019-11-01T20:26:47Z"), 
    secret_access_key: "8P+SQvWIuLnKhh8d++jpw0nNmQRBZvNEXAMPLEKEY", 
    session_token: "IQoJb3JpZ2luX2VjEOz////////////////////wEXAMPLEtMSJHMEUCIDoKK3JH9uGQE1z0sINr5M4jk+Na8KHDcCYRVjJCZEvOAiEA3OvJGtw1EcViOleS2vhs8VdCKFJQWPQrmGdeehM4IC1NtBmUpp2wUE8phUZampKsburEDy0KPkyQDYwT7WZ0wq5VSXDvp75YU9HFvlRd8Tx6q6fE8YQcHNVXAkiY9q6d+xo0rKwT38xVqr7ZD0u0iPPkUL64lIZbqBAz+scqKmlzm8FDrypNC9Yjc8fPOLn9FX9KSYvKTr4rvx3iSIlTJabIQwj2ICCR/oLxBA==", 
  }, 
  issuer: "https://integ.example.com/idp/shibboleth", 
  name_qualifier: "SbdGOnUkh1i4+EXAMPLExL/jEvs=", 
  packed_policy_size: 6, 
  subject: "SamlExample", 
  subject_type: "transient", 
}

Request syntax with placeholder values


resp = client.assume_role_with_saml({
  role_arn: "arnType", # required
  principal_arn: "arnType", # required
  saml_assertion: "SAMLAssertionType", # required
  policy_arns: [
    {
      arn: "arnType",
    },
  ],
  policy: "sessionPolicyDocumentType",
  duration_seconds: 1,
})

Response structure


resp.credentials.access_key_id #=> String
resp.credentials.secret_access_key #=> String
resp.credentials.session_token #=> String
resp.credentials.expiration #=> Time
resp.assumed_role_user.assumed_role_id #=> String
resp.assumed_role_user.arn #=> String
resp.packed_policy_size #=> Integer
resp.subject #=> String
resp.subject_type #=> String
resp.issuer #=> String
resp.audience #=> String
resp.name_qualifier #=> String
resp.source_identity #=> String

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :role_arn (required, String)

    The Amazon Resource Name (ARN) of the role that the caller is assuming.

  • :principal_arn (required, String)

    The Amazon Resource Name (ARN) of the SAML provider in IAM that describes the IdP.

  • :saml_assertion (required, String)

    The base64 encoded SAML authentication response provided by the IdP.

    For more information, see [Configuring a Relying Party and Adding Claims] in the *IAM User Guide*.

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/create-role-saml-IdP-tasks.html

  • :policy_arns (Array<Types::PolicyDescriptorType>)

    The Amazon Resource Names (ARNs) of the IAM managed policies that you want to use as managed session policies. The policies must exist in the same account as the role.

    This parameter is optional. You can provide up to 10 managed policy ARNs. However, the plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. For more information about ARNs, see [Amazon Resource Names (ARNs) and Amazon Web Services Service Namespaces] in the Amazon Web Services General Reference.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

    [1]: docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :policy (String)

    An IAM policy in JSON format that you want to use as an inline session policy.

    This parameter is optional. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

    The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. The JSON policy characters can be any ASCII character from the space character to the end of the valid character list (\u0020 through \u00FF). It can also include the tab (\u0009), linefeed (\u000A), and carriage return (\u000D) characters.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :duration_seconds (Integer)

    The duration, in seconds, of the role session. Your role session lasts for the duration that you specify for the `DurationSeconds` parameter, or until the time specified in the SAML authentication response's `SessionNotOnOrAfter` value, whichever is shorter. You can provide a `DurationSeconds` value from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. If you specify a value higher than this setting, the operation fails. For example, if you specify a session duration of 12 hours, but your administrator set the maximum session duration to 6 hours, your operation fails. To learn how to view the maximum value for your role, see [View the Maximum Session Duration Setting for a Role] in the *IAM User Guide*.

    By default, the value is set to `3600` seconds.

    <note markdown=“1”> The `DurationSeconds` parameter is separate from the duration of a console session that you might request using the returned credentials. The request to the federation endpoint for a console sign-in token takes a `SessionDuration` parameter that specifies the maximum length of the console session. For more information, see [Creating a URL that Enables Federated Users to Access the Amazon Web Services Management Console] in the *IAM User Guide*.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html#id_roles_use_view-role-max-session [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_enable-console-custom-url.html

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 1162

def assume_role_with_saml(params = {}, options = {})
  req = build_request(:assume_role_with_saml, params)
  req.send_request(options)
end

#assume_role_with_web_identity(params = {}) ⇒ Types::AssumeRoleWithWebIdentityResponse

Returns a set of temporary security credentials for users who have been authenticated in a mobile or web application with a web identity provider. Example providers include Amazon Cognito, Login with Amazon, Facebook, Google, or any OpenID Connect-compatible identity provider.

<note markdown=“1”> For mobile applications, we recommend that you use Amazon Cognito. You can use Amazon Cognito with the [Amazon Web Services SDK for iOS Developer Guide] and the [Amazon Web Services SDK for Android Developer Guide] to uniquely identify a user. You can also supply the user with a consistent identity throughout the lifetime of an application.

To learn more about Amazon Cognito, see [Amazon Cognito Overview][3]

in *Amazon Web Services SDK for Android Developer Guide* and [Amazon Cognito Overview] in the *Amazon Web Services SDK for iOS Developer Guide*.

</note>

Calling `AssumeRoleWithWebIdentity` does not require the use of Amazon Web Services security credentials. Therefore, you can distribute an application (for example, on mobile devices) that requests temporary security credentials without including long-term Amazon Web Services credentials in the application. You also don't need to deploy server-based proxy services that use long-term Amazon Web Services credentials. Instead, the identity of the caller is validated by using a token from the web identity provider. For a comparison of `AssumeRoleWithWebIdentity` with the other API operations that produce temporary credentials, see [Requesting Temporary Security Credentials] and [Comparing the Amazon Web Services STS API operations] in the *IAM User Guide*.

The temporary security credentials returned by this API consist of an access key ID, a secret access key, and a security token. Applications can use these temporary security credentials to sign calls to Amazon Web Services service API operations.

**Session Duration**

By default, the temporary security credentials created by `AssumeRoleWithWebIdentity` last for one hour. However, you can use the optional `DurationSeconds` parameter to specify the duration of your session. You can provide a value from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. To learn how to view the maximum value for your role, see [View the Maximum Session Duration Setting for a Role] in the *IAM User Guide*. The maximum session duration limit applies when you use the `AssumeRole*` API operations or the `assume-role*` CLI commands. However the limit does not apply when you use those operations to create a console URL. For more information, see [Using IAM Roles] in the *IAM User Guide*.

Permissions

The temporary security credentials created by `AssumeRoleWithWebIdentity` can be used to make API calls to any Amazon Web Services service with the following exception: you cannot call the STS `GetFederationToken` or `GetSessionToken` API operations.

(Optional) You can pass inline or managed [session policies] to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

Tags

(Optional) You can configure your IdP to pass attributes into your web identity token as session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see [Passing Session Tags in STS] in the *IAM User Guide*.

You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see [IAM and STS Character Limits] in the *IAM User Guide*.

<note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

</note>

You can pass a session tag with the same key as a tag that is attached to the role. When you do, the session tag overrides the role tag with the same key.

An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see [Tutorial: Using Tags for Attribute-Based Access Control] in the *IAM User Guide*.

You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see [Chaining Roles with Session Tags] in the *IAM User Guide*.

Identities

Before your application can call `AssumeRoleWithWebIdentity`, you must have an identity token from a supported identity provider and create a role that the application can assume. The role that your application assumes must trust the identity provider that is associated with the identity token. In other words, the identity provider must be specified in the role's trust policy.

Calling `AssumeRoleWithWebIdentity` can result in an entry in your CloudTrail logs. The entry includes the [Subject] of the provided web identity token. We recommend that you avoid using any personally identifiable information (PII) in this field. For example, you could instead use a GUID or a pairwise identifier, as [suggested in the OIDC specification].

For more information about how to use web identity federation and the `AssumeRoleWithWebIdentity` API, see the following resources:

  • Using Web Identity Federation API Operations for Mobile Apps][16

    and [Federation Through a Web-based Identity Provider].

  • [ Web Identity Federation Playground]. Walk through the process of authenticating through Login with Amazon, Facebook, or Google, getting temporary security credentials, and then using those credentials to make a request to Amazon Web Services.

  • Amazon Web Services SDK for iOS Developer Guide][1

    and [Amazon Web

    Services SDK for Android Developer Guide]. These toolkits contain sample apps that show how to invoke the identity providers. The toolkits then show how to use the information from these providers to get and use temporary security credentials.

  • [Web Identity Federation with Mobile Applications]. This article discusses web identity federation and shows an example of how to use web identity federation to get access to content in Amazon S3.

[1]: aws.amazon.com/sdkforios/ [2]: aws.amazon.com/sdkforandroid/ [3]: docs.aws.amazon.com/mobile/sdkforandroid/developerguide/cognito-auth.html#d0e840 [4]: docs.aws.amazon.com/mobile/sdkforios/developerguide/cognito-auth.html#d0e664 [5]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html [6]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#stsapi_comparison [7]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html#id_roles_use_view-role-max-session [8]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html [9]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session [10]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html [11]: docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-limits.html#reference_iam-limits-entity-length [12]: docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_attribute-based-access-control.html [13]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html#id_session-tags_role-chaining [14]: openid.net/specs/openid-connect-core-1_0.html#Claims [15]: openid.net/specs/openid-connect-core-1_0.html#SubjectIDTypes [16]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_oidc_manual.html [17]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#api_assumerolewithwebidentity [18]: aws.amazon.com/blogs/aws/the-aws-web-identity-federation-playground/ [19]: aws.amazon.com/articles/web-identity-federation-with-mobile-applications

Examples:

Example: To assume a role as an OpenID Connect-federated user


resp = client.assume_role_with_web_identity({
  duration_seconds: 3600, 
  policy: "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Stmt1\",\"Effect\":\"Allow\",\"Action\":\"s3:ListAllMyBuckets\",\"Resource\":\"*\"}]}", 
  provider_id: "www.amazon.com", 
  role_arn: "arn:aws:iam::123456789012:role/FederatedWebIdentityRole", 
  role_session_name: "app1", 
  web_identity_token: "Atza%7CIQEBLjAsAhRFiXuWpUXuRvQ9PZL3GMFcYevydwIUFAHZwXZXXXXXXXXJnrulxKDHwy87oGKPznh0D6bEQZTSCzyoCtL_8S07pLpr0zMbn6w1lfVZKNTBdDansFBmtGnIsIapjI6xKR02Yc_2bQ8LZbUXSGm6Ry6_BG7PrtLZtj_dfCTj92xNGed-CrKqjG7nPBjNIL016GGvuS5gSvPRUxWES3VYfm1wl7WTI7jn-Pcb6M-buCgHhFOzTQxod27L9CqnOLio7N3gZAGpsp6n1-AJBOCJckcyXe2c6uD0srOJeZlKUm2eTDVMf8IehDVI0r1QOnTV6KzzAI3OY87Vd_cVMQ", 
})

resp.to_h outputs the following:
{
  assumed_role_user: {
    arn: "arn:aws:sts::123456789012:assumed-role/FederatedWebIdentityRole/app1", 
    assumed_role_id: "AROACLKWSDQRAOEXAMPLE:app1", 
  }, 
  audience: "[email protected]", 
  credentials: {
    access_key_id: "AKIAIOSFODNN7EXAMPLE", 
    expiration: Time.parse("2014-10-24T23:00:23Z"), 
    secret_access_key: "wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY", 
    session_token: "AQoDYXdzEE0a8ANXXXXXXXXNO1ewxE5TijQyp+IEXAMPLE", 
  }, 
  packed_policy_size: 123, 
  provider: "www.amazon.com", 
  subject_from_web_identity_token: "amzn1.account.AF6RHO7KZU5XRVQJGXK6HEXAMPLE", 
}

Request syntax with placeholder values


resp = client.assume_role_with_web_identity({
  role_arn: "arnType", # required
  role_session_name: "roleSessionNameType", # required
  web_identity_token: "clientTokenType", # required
  provider_id: "urlType",
  policy_arns: [
    {
      arn: "arnType",
    },
  ],
  policy: "sessionPolicyDocumentType",
  duration_seconds: 1,
})

Response structure


resp.credentials.access_key_id #=> String
resp.credentials.secret_access_key #=> String
resp.credentials.session_token #=> String
resp.credentials.expiration #=> Time
resp.subject_from_web_identity_token #=> String
resp.assumed_role_user.assumed_role_id #=> String
resp.assumed_role_user.arn #=> String
resp.packed_policy_size #=> Integer
resp.provider #=> String
resp.audience #=> String
resp.source_identity #=> String

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :role_arn (required, String)

    The Amazon Resource Name (ARN) of the role that the caller is assuming.

  • :role_session_name (required, String)

    An identifier for the assumed role session. Typically, you pass the name or identifier that is associated with the user who is using your application. That way, the temporary security credentials that your application will use are associated with that user. This session name is included as part of the ARN and assumed role ID in the `AssumedRoleUser` response element.

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected]

  • :web_identity_token (required, String)

    The OAuth 2.0 access token or OpenID Connect ID token that is provided by the identity provider. Your application must get this token by authenticating the user who is using your application with a web identity provider before the application makes an `AssumeRoleWithWebIdentity` call.

  • :provider_id (String)

    The fully qualified host component of the domain name of the identity provider.

    Specify this value only for OAuth 2.0 access tokens. Currently `www.amazon.com` and `graph.facebook.com` are the only supported identity providers for OAuth 2.0 access tokens. Do not include URL schemes and port numbers.

    Do not specify this value for OpenID Connect ID tokens.

  • :policy_arns (Array<Types::PolicyDescriptorType>)

    The Amazon Resource Names (ARNs) of the IAM managed policies that you want to use as managed session policies. The policies must exist in the same account as the role.

    This parameter is optional. You can provide up to 10 managed policy ARNs. However, the plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. For more information about ARNs, see [Amazon Resource Names (ARNs) and Amazon Web Services Service Namespaces] in the Amazon Web Services General Reference.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

    [1]: docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :policy (String)

    An IAM policy in JSON format that you want to use as an inline session policy.

    This parameter is optional. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see [Session Policies] in the *IAM User Guide*.

    The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. The JSON policy characters can be any ASCII character from the space character to the end of the valid character list (\u0020 through \u00FF). It can also include the tab (\u0009), linefeed (\u000A), and carriage return (\u000D) characters.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :duration_seconds (Integer)

    The duration, in seconds, of the role session. The value can range from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. If you specify a value higher than this setting, the operation fails. For example, if you specify a session duration of 12 hours, but your administrator set the maximum session duration to 6 hours, your operation fails. To learn how to view the maximum value for your role, see [View the Maximum Session Duration Setting for a Role] in the *IAM User Guide*.

    By default, the value is set to `3600` seconds.

    <note markdown=“1”> The `DurationSeconds` parameter is separate from the duration of a console session that you might request using the returned credentials. The request to the federation endpoint for a console sign-in token takes a `SessionDuration` parameter that specifies the maximum length of the console session. For more information, see [Creating a URL that Enables Federated Users to Access the Amazon Web Services Management Console] in the *IAM User Guide*.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html#id_roles_use_view-role-max-session [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_enable-console-custom-url.html

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 1541

def assume_role_with_web_identity(params = {}, options = {})
  req = build_request(:assume_role_with_web_identity, params)
  req.send_request(options)
end

#build_request(operation_name, params = {}) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • params ({}) (defaults to: {})

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# File 'lib/aws-sdk-sts/client.rb', line 2269

def build_request(operation_name, params = {})
  handlers = @handlers.for(operation_name)
  context = Seahorse::Client::RequestContext.new(
    operation_name: operation_name,
    operation: config.api.operation(operation_name),
    client: self,
    params: params,
    config: config)
  context[:gem_name] = 'aws-sdk-core'
  context[:gem_version] = '3.124.0'
  Seahorse::Client::Request.new(handlers, context)
end

#decode_authorization_message(params = {}) ⇒ Types::DecodeAuthorizationMessageResponse

Decodes additional information about the authorization status of a request from an encoded message returned in response to an Amazon Web Services request.

For example, if a user is not authorized to perform an operation that he or she has requested, the request returns a `Client.UnauthorizedOperation` response (an HTTP 403 response). Some Amazon Web Services operations additionally return an encoded message that can provide details about this authorization failure.

<note markdown=“1”> Only certain Amazon Web Services operations return an encoded authorization message. The documentation for an individual operation indicates whether that operation returns an encoded message in addition to returning an HTTP code.

</note>

The message is encoded because the details of the authorization status can contain privileged information that the user who requested the operation should not see. To decode an authorization status message, a user must be granted permissions through an IAM [policy] to request the `DecodeAuthorizationMessage` (`sts:DecodeAuthorizationMessage`) action.

The decoded message includes the following type of information:

  • Whether the request was denied due to an explicit deny or due to the absence of an explicit allow. For more information, see [Determining Whether a Request is Allowed or Denied] in the *IAM User Guide*.

  • The principal who made the request.

  • The requested action.

  • The requested resource.

  • The values of condition keys in the context of the user's request.

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_evaluation-logic.html#policy-eval-denyallow

Examples:

Example: To decode information about an authorization status of a request


resp = client.decode_authorization_message({
  encoded_message: "<encoded-message>", 
})

resp.to_h outputs the following:
{
  decoded_message: "{\"allowed\": \"false\",\"explicitDeny\": \"false\",\"matchedStatements\": \"\",\"failures\": \"\",\"context\": {\"principal\": {\"id\": \"AIDACKCEVSQ6C2EXAMPLE\",\"name\": \"Bob\",\"arn\": \"arn:aws:iam::123456789012:user/Bob\"},\"action\": \"ec2:StopInstances\",\"resource\": \"arn:aws:ec2:us-east-1:123456789012:instance/i-dd01c9bd\",\"conditions\": [{\"item\": {\"key\": \"ec2:Tenancy\",\"values\": [\"default\"]},{\"item\": {\"key\": \"ec2:ResourceTag/elasticbeanstalk:environment-name\",\"values\": [\"Default-Environment\"]}},(Additional items ...)]}}", 
}

Request syntax with placeholder values


resp = client.decode_authorization_message({
  encoded_message: "encodedMessageType", # required
})

Response structure


resp.decoded_message #=> String

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :encoded_message (required, String)

    The encoded message that was returned with the response.

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 1622

def decode_authorization_message(params = {}, options = {})
  req = build_request(:decode_authorization_message, params)
  req.send_request(options)
end

#get_access_key_info(params = {}) ⇒ Types::GetAccessKeyInfoResponse

Returns the account identifier for the specified access key ID.

Access keys consist of two parts: an access key ID (for example, `AKIAIOSFODNN7EXAMPLE`) and a secret access key (for example, `wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY`). For more information about access keys, see [Managing Access Keys for IAM Users] in the *IAM User Guide*.

When you pass an access key ID to this operation, it returns the ID of the Amazon Web Services account to which the keys belong. Access key IDs beginning with `AKIA` are long-term credentials for an IAM user or the Amazon Web Services account root user. Access key IDs beginning with `ASIA` are temporary credentials that are created using STS operations. If the account in the response belongs to you, you can sign in as the root user and review your root user access keys. Then, you can pull a [credentials report] to learn which IAM user owns the keys. To learn who requested the temporary credentials for an `ASIA` access key, view the STS events in your [CloudTrail logs] in the *IAM User Guide*.

This operation does not indicate the state of the access key. The key might be active, inactive, or deleted. Active keys might not have permissions to perform an operation. Providing a deleted access key might return an error that the key doesn't exist.

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_getting-report.html [3]: docs.aws.amazon.com/IAM/latest/UserGuide/cloudtrail-integration.html

Examples:

Request syntax with placeholder values


resp = client.get_access_key_info({
  access_key_id: "accessKeyIdType", # required
})

Response structure


resp. #=> String

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :access_key_id (required, String)

    The identifier of an access key.

    This parameter allows (through its regex pattern) a string of characters that can consist of any upper- or lowercase letter or digit.

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 1683

def get_access_key_info(params = {}, options = {})
  req = build_request(:get_access_key_info, params)
  req.send_request(options)
end

#get_caller_identity(params = {}) ⇒ Types::GetCallerIdentityResponse

Returns details about the IAM user or role whose credentials are used to call the operation.

<note markdown=“1”> No permissions are required to perform this operation. If an administrator adds a policy to your IAM user or role that explicitly denies access to the `sts:GetCallerIdentity` action, you can still perform this operation. Permissions are not required because the same information is returned when an IAM user or role is denied access. To view an example response, see [I Am Not Authorized to Perform: iam:DeleteVirtualMFADevice] in the *IAM User Guide*.

</note>

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/troubleshoot_general.html#troubleshoot_general_access-denied-delete-mfa

Examples:

Example: To get details about a calling IAM user


# This example shows a request and response made with the credentials for a user named Alice in the AWS account
# 123456789012.

resp = client.get_caller_identity({
})

resp.to_h outputs the following:
{
  account: "123456789012", 
  arn: "arn:aws:iam::123456789012:user/Alice", 
  user_id: "AKIAI44QH8DHBEXAMPLE", 
}

Example: To get details about a calling user federated with AssumeRole


# This example shows a request and response made with temporary credentials created by AssumeRole. The name of the assumed
# role is my-role-name, and the RoleSessionName is set to my-role-session-name.

resp = client.get_caller_identity({
})

resp.to_h outputs the following:
{
  account: "123456789012", 
  arn: "arn:aws:sts::123456789012:assumed-role/my-role-name/my-role-session-name", 
  user_id: "AKIAI44QH8DHBEXAMPLE:my-role-session-name", 
}

Example: To get details about a calling user federated with GetFederationToken


# This example shows a request and response made with temporary credentials created by using GetFederationToken. The Name
# parameter is set to my-federated-user-name.

resp = client.get_caller_identity({
})

resp.to_h outputs the following:
{
  account: "123456789012", 
  arn: "arn:aws:sts::123456789012:federated-user/my-federated-user-name", 
  user_id: "123456789012:my-federated-user-name", 
}

Response structure


resp.user_id #=> String
resp. #=> String
resp.arn #=> String

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 1767

def get_caller_identity(params = {}, options = {})
  req = build_request(:get_caller_identity, params)
  req.send_request(options)
end

#get_federation_token(params = {}) ⇒ Types::GetFederationTokenResponse

Returns a set of temporary security credentials (consisting of an access key ID, a secret access key, and a security token) for a federated user. A typical use is in a proxy application that gets temporary security credentials on behalf of distributed applications inside a corporate network. You must call the `GetFederationToken` operation using the long-term security credentials of an IAM user. As a result, this call is appropriate in contexts where those credentials can be safely stored, usually in a server-based application. For a comparison of `GetFederationToken` with the other API operations that produce temporary credentials, see [Requesting Temporary Security Credentials] and [Comparing the Amazon Web Services STS API operations] in the *IAM User Guide*.

<note markdown=“1”> You can create a mobile-based or browser-based app that can authenticate users using a web identity provider like Login with Amazon, Facebook, Google, or an OpenID Connect-compatible identity provider. In this case, we recommend that you use [Amazon Cognito] or `AssumeRoleWithWebIdentity`. For more information, see [Federation Through a Web-based Identity Provider] in the *IAM User Guide*.

</note>

You can also call `GetFederationToken` using the security credentials of an Amazon Web Services account root user, but we do not recommend it. Instead, we recommend that you create an IAM user for the purpose of the proxy application. Then attach a policy to the IAM user that limits federated users to only the actions and resources that they need to access. For more information, see [IAM Best Practices] in the *IAM User Guide*.

**Session duration**

The temporary credentials are valid for the specified duration, from 900 seconds (15 minutes) up to a maximum of 129,600 seconds (36 hours). The default session duration is 43,200 seconds (12 hours). Temporary credentials obtained by using the Amazon Web Services account root user credentials have a maximum duration of 3,600 seconds (1 hour).

Permissions

You can use the temporary credentials created by `GetFederationToken` in any Amazon Web Services service except the following:

  • You cannot call any IAM operations using the CLI or the Amazon Web Services API.

  • You cannot call any STS operations except `GetCallerIdentity`.

You must pass an inline or managed [session policy] to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters.

Though the session policy parameters are optional, if you do not pass a policy, then the resulting federated user session has no permissions. When you pass session policies, the session permissions are the intersection of the IAM user policies and the session policies that you pass. This gives you a way to further restrict the permissions for a federated user. You cannot use session policies to grant more permissions than those that are defined in the permissions policy of the IAM user. For more information, see [Session Policies] in the *IAM User Guide*. For information about using `GetFederationToken` to create temporary security credentials, see [GetFederationToken—Federation Through a Custom Identity Broker].

You can use the credentials to access a resource that has a resource-based policy. If that policy specifically references the federated user session in the `Principal` element of the policy, the session has the permissions allowed by the policy. These permissions are granted in addition to the permissions granted by the session policies.

Tags

(Optional) You can pass tag key-value pairs to your session. These are called session tags. For more information about session tags, see

Passing Session Tags in STS][8

in the *IAM User Guide*.

<note markdown=“1”> You can create a mobile-based or browser-based app that can authenticate users using a web identity provider like Login with Amazon, Facebook, Google, or an OpenID Connect-compatible identity provider. In this case, we recommend that you use [Amazon Cognito] or `AssumeRoleWithWebIdentity`. For more information, see [Federation Through a Web-based Identity Provider] in the *IAM User Guide*.

</note>

An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see [Tutorial: Using Tags for Attribute-Based Access Control] in the *IAM User Guide*.

Tag key–value pairs are not case sensitive, but case is preserved. This means that you cannot have separate `Department` and `department` tag keys. Assume that the user that you are federating has the `Department`=`Marketing` tag and you pass the `department`=`engineering` session tag. `Department` and `department` are not saved as separate tags, and the session tag passed in the request takes precedence over the user tag.

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#stsapi_comparison [3]: aws.amazon.com/cognito/ [4]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#api_assumerolewithwebidentity [5]: docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html [6]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session [7]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#api_getfederationtoken [8]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html [9]: docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_attribute-based-access-control.html

Examples:

Example: To get temporary credentials for a role by using GetFederationToken


resp = client.get_federation_token({
  duration_seconds: 3600, 
  name: "testFedUserSession", 
  policy: "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Stmt1\",\"Effect\":\"Allow\",\"Action\":\"s3:ListAllMyBuckets\",\"Resource\":\"*\"}]}", 
  tags: [
    {
      key: "Project", 
      value: "Pegasus", 
    }, 
    {
      key: "Cost-Center", 
      value: "98765", 
    }, 
  ], 
})

resp.to_h outputs the following:
{
  credentials: {
    access_key_id: "AKIAIOSFODNN7EXAMPLE", 
    expiration: Time.parse("2011-07-15T23:28:33.359Z"), 
    secret_access_key: "wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY", 
    session_token: "AQoDYXdzEPT//////////wEXAMPLEtc764bNrC9SAPBSM22wDOk4x4HIZ8j4FZTwdQWLWsKWHGBuFqwAeMicRXmxfpSPfIeoIYRqTflfKD8YUuwthAx7mSEI/qkPpKPi/kMcGdQrmGdeehM4IC1NtBmUpp2wUE8phUZampKsburEDy0KPkyQDYwT7WZ0wq5VSXDvp75YU9HFvlRd8Tx6q6fE8YQcHNVXAkiY9q6d+xo0rKwT38xVqr7ZD0u0iPPkUL64lIZbqBAz+scqKmlzm8FDrypNC9Yjc8fPOLn9FX9KSYvKTr4rvx3iSIlTJabIQwj2ICCR/oLxBA==", 
  }, 
  federated_user: {
    arn: "arn:aws:sts::123456789012:federated-user/Bob", 
    federated_user_id: "123456789012:Bob", 
  }, 
  packed_policy_size: 8, 
}

Request syntax with placeholder values


resp = client.get_federation_token({
  name: "userNameType", # required
  policy: "sessionPolicyDocumentType",
  policy_arns: [
    {
      arn: "arnType",
    },
  ],
  duration_seconds: 1,
  tags: [
    {
      key: "tagKeyType", # required
      value: "tagValueType", # required
    },
  ],
})

Response structure


resp.credentials.access_key_id #=> String
resp.credentials.secret_access_key #=> String
resp.credentials.session_token #=> String
resp.credentials.expiration #=> Time
resp.federated_user.federated_user_id #=> String
resp.federated_user.arn #=> String
resp.packed_policy_size #=> Integer

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :name (required, String)

    The name of the federated user. The name is used as an identifier for the temporary security credentials (such as `Bob`). For example, you can reference the federated user name in a resource-based policy, such as in an Amazon S3 bucket policy.

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected]

  • :policy (String)

    An IAM policy in JSON format that you want to use as an inline session policy.

    You must pass an inline or managed [session policy] to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies.

    This parameter is optional. However, if you do not pass any session policies, then the resulting federated user session has no permissions.

    When you pass session policies, the session permissions are the intersection of the IAM user policies and the session policies that you pass. This gives you a way to further restrict the permissions for a federated user. You cannot use session policies to grant more permissions than those that are defined in the permissions policy of the IAM user. For more information, see [Session Policies] in the *IAM User Guide*.

    The resulting credentials can be used to access a resource that has a resource-based policy. If that policy specifically references the federated user session in the `Principal` element of the policy, the session has the permissions allowed by the policy. These permissions are granted in addition to the permissions that are granted by the session policies.

    The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. The JSON policy characters can be any ASCII character from the space character to the end of the valid character list (\u0020 through \u00FF). It can also include the tab (\u0009), linefeed (\u000A), and carriage return (\u000D) characters.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session

  • :policy_arns (Array<Types::PolicyDescriptorType>)

    The Amazon Resource Names (ARNs) of the IAM managed policies that you want to use as a managed session policy. The policies must exist in the same account as the IAM user that is requesting federated access.

    You must pass an inline or managed [session policy] to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. You can provide up to 10 managed policy ARNs. For more information about ARNs, see [Amazon Resource Names (ARNs) and Amazon Web Services Service Namespaces] in the Amazon Web Services General Reference.

    This parameter is optional. However, if you do not pass any session policies, then the resulting federated user session has no permissions.

    When you pass session policies, the session permissions are the intersection of the IAM user policies and the session policies that you pass. This gives you a way to further restrict the permissions for a federated user. You cannot use session policies to grant more permissions than those that are defined in the permissions policy of the IAM user. For more information, see [Session Policies] in the *IAM User Guide*.

    The resulting credentials can be used to access a resource that has a resource-based policy. If that policy specifically references the federated user session in the `Principal` element of the policy, the session has the permissions allowed by the policy. These permissions are granted in addition to the permissions that are granted by the session policies.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session [2]: docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html

  • :duration_seconds (Integer)

    The duration, in seconds, that the session should last. Acceptable durations for federation sessions range from 900 seconds (15 minutes) to 129,600 seconds (36 hours), with 43,200 seconds (12 hours) as the default. Sessions obtained using Amazon Web Services account root user credentials are restricted to a maximum of 3,600 seconds (one hour). If the specified duration is longer than one hour, the session obtained by using root user credentials defaults to one hour.

  • :tags (Array<Types::Tag>)

    A list of session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see

    Passing Session Tags in STS][1

    in the *IAM User Guide*.

    This parameter is optional. You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see [IAM and STS Character Limits] in the *IAM User Guide*.

    <note markdown=“1”> An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The `PackedPolicySize` response element indicates by percentage how close the policies and tags for your request are to the upper size limit.

    </note>
    

    You can pass a session tag with the same key as a tag that is already attached to the user you are federating. When you do, session tags override a user tag with the same key.

    Tag key–value pairs are not case sensitive, but case is preserved. This means that you cannot have separate `Department` and `department` tag keys. Assume that the role has the `Department`=`Marketing` tag and you pass the `department`=`engineering` session tag. `Department` and `department` are not saved as separate tags, and the session tag passed in the request takes precedence over the role tag.

    [1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_session-tags.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-limits.html#reference_iam-limits-entity-length

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 2112

def get_federation_token(params = {}, options = {})
  req = build_request(:get_federation_token, params)
  req.send_request(options)
end

#get_session_token(params = {}) ⇒ Types::GetSessionTokenResponse

Returns a set of temporary credentials for an Amazon Web Services account or IAM user. The credentials consist of an access key ID, a secret access key, and a security token. Typically, you use `GetSessionToken` if you want to use MFA to protect programmatic calls to specific Amazon Web Services API operations like Amazon EC2 `StopInstances`. MFA-enabled IAM users would need to call `GetSessionToken` and submit an MFA code that is associated with their MFA device. Using the temporary security credentials that are returned from the call, IAM users can then make programmatic calls to API operations that require MFA authentication. If you do not supply a correct MFA code, then the API returns an access denied error. For a comparison of `GetSessionToken` with the other API operations that produce temporary credentials, see [Requesting Temporary Security Credentials] and [Comparing the Amazon Web Services STS API operations] in the *IAM User Guide*.

**Session Duration**

The `GetSessionToken` operation must be called by using the long-term Amazon Web Services security credentials of the Amazon Web Services account root user or an IAM user. Credentials that are created by IAM users are valid for the duration that you specify. This duration can range from 900 seconds (15 minutes) up to a maximum of 129,600 seconds (36 hours), with a default of 43,200 seconds (12 hours). Credentials based on account credentials can range from 900 seconds (15 minutes) up to 3,600 seconds (1 hour), with a default of 1 hour.

Permissions

The temporary security credentials created by `GetSessionToken` can be used to make API calls to any Amazon Web Services service with the following exceptions:

  • You cannot call any IAM API operations unless MFA authentication information is included in the request.

  • You cannot call any STS API except `AssumeRole` or `GetCallerIdentity`.

<note markdown=“1”> We recommend that you do not call `GetSessionToken` with Amazon Web Services account root user credentials. Instead, follow our [best practices] by creating one or more IAM users, giving them the necessary permissions, and using IAM users for everyday interaction with Amazon Web Services.

</note>

The credentials that are returned by `GetSessionToken` are based on permissions associated with the user whose credentials were used to call the operation. If `GetSessionToken` is called using Amazon Web Services account root user credentials, the temporary credentials have root user permissions. Similarly, if `GetSessionToken` is called using the credentials of an IAM user, the temporary credentials have the same permissions as the IAM user.

For more information about using `GetSessionToken` to create temporary credentials, go to [Temporary Credentials for Users in Untrusted Environments] in the *IAM User Guide*.

[1]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html [2]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#stsapi_comparison [3]: docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#create-iam-users [4]: docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#api_getsessiontoken

Examples:

Example: To get temporary credentials for an IAM user or an AWS account


resp = client.get_session_token({
  duration_seconds: 3600, 
  serial_number: "YourMFASerialNumber", 
  token_code: "123456", 
})

resp.to_h outputs the following:
{
  credentials: {
    access_key_id: "AKIAIOSFODNN7EXAMPLE", 
    expiration: Time.parse("2011-07-11T19:55:29.611Z"), 
    secret_access_key: "wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY", 
    session_token: "AQoEXAMPLEH4aoAH0gNCAPyJxz4BlCFFxWNE1OPTgk5TthT+FvwqnKwRcOIfrRh3c/LTo6UDdyJwOOvEVPvLXCrrrUtdnniCEXAMPLE/IvU1dYUg2RVAJBanLiHb4IgRmpRV3zrkuWJOgQs8IZZaIv2BXIa2R4OlgkBN9bkUDNCJiBeb/AXlzBBko7b15fjrBs2+cTQtpZ3CYWFXG8C5zqx37wnOE49mRl/+OtkIKGO7fAE", 
  }, 
}

Request syntax with placeholder values


resp = client.get_session_token({
  duration_seconds: 1,
  serial_number: "serialNumberType",
  token_code: "tokenCodeType",
})

Response structure


resp.credentials.access_key_id #=> String
resp.credentials.secret_access_key #=> String
resp.credentials.session_token #=> String
resp.credentials.expiration #=> Time

Parameters:

  • params (Hash) (defaults to: {})

    ({})

Options Hash (params):

  • :duration_seconds (Integer)

    The duration, in seconds, that the credentials should remain valid. Acceptable durations for IAM user sessions range from 900 seconds (15 minutes) to 129,600 seconds (36 hours), with 43,200 seconds (12 hours) as the default. Sessions for Amazon Web Services account owners are restricted to a maximum of 3,600 seconds (one hour). If the duration is longer than one hour, the session for Amazon Web Services account owners defaults to one hour.

  • :serial_number (String)

    The identification number of the MFA device that is associated with the IAM user who is making the `GetSessionToken` call. Specify this value if the IAM user has a policy that requires MFA authentication. The value is either the serial number for a hardware device (such as `GAHT12345678`) or an Amazon Resource Name (ARN) for a virtual device (such as `arn:aws:iam::123456789012:mfa/user`). You can find the device for an IAM user by going to the Amazon Web Services Management Console and viewing the user's security credentials.

    The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric characters with no spaces. You can also include underscores or any of the following characters: =,[email protected]:/-

  • :token_code (String)

    The value provided by the MFA device, if MFA is required. If any policy requires the IAM user to submit an MFA code, specify this value. If MFA authentication is required, the user must provide a code when requesting a set of temporary security credentials. A user who fails to provide the code receives an “access denied” response when requesting resources that require MFA authentication.

    The format for this parameter, as described by its regex pattern, is a sequence of six numeric digits.

Returns:

See Also:


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# File 'lib/aws-sdk-sts/client.rb', line 2260

def get_session_token(params = {}, options = {})
  req = build_request(:get_session_token, params)
  req.send_request(options)
end

#waiter_namesObject

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Deprecated.

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# File 'lib/aws-sdk-sts/client.rb', line 2284

def waiter_names
  []
end