Improve credential documentation and expired token error raising

gems/aws-sdk-core/lib/aws-sdk-core/assume_role_credentials.rb

@@ -3,25 +3,20 @@
 require 'set'
 
 module Aws
-
-  # An auto-refreshing credential provider that works by assuming
-  # a role via {Aws::STS::Client#assume_role}.
+  # An auto-refreshing credential provider that assumes a role via
+  # {Aws::STS::Client#assume_role}.
   #
   #     role_credentials = Aws::AssumeRoleCredentials.new(
   #       client: Aws::STS::Client.new(...),
   #       role_arn: "linked::account::arn",
   #       role_session_name: "session-name"
   #     )
-  #
   #     ec2 = Aws::EC2::Client.new(credentials: role_credentials)
   #
-  # If you omit `:client` option, a new {STS::Client} object will be
-  # constructed.
+  # If you omit `:client` option, a new {Aws::STS::Client} object will be
+  # constructed with additional options that were provided.
   #
-  # The AssumeRoleCredentials also provides a `before_refresh` callback
-  # that can be used to help manage refreshing tokens.
-  # `before_refresh` is called when AWS credentials are required and need
-  # to be refreshed and it is called with the AssumeRoleCredentials object.
+  # @see Aws::STS::Client#assume_role
   class AssumeRoleCredentials
 
     include CredentialProvider

gems/aws-sdk-core/lib/aws-sdk-core/assume_role_web_identity_credentials.rb

@@ -5,9 +5,8 @@
 require 'base64'
 
 module Aws
-
-  # An auto-refreshing credential provider that works by assuming
-  # a role via {Aws::STS::Client#assume_role_with_web_identity}.
+  # An auto-refreshing credential provider that assumes a role via
+  # {Aws::STS::Client#assume_role_with_web_identity}.
   #
   #     role_credentials = Aws::AssumeRoleWebIdentityCredentials.new(
   #       client: Aws::STS::Client.new(...),
@@ -16,12 +15,12 @@ module Aws
   #       role_session_name: "session-name"
   #       ...
   #     )
-  #     For full list of parameters accepted
-  #     @see Aws::STS::Client#assume_role_with_web_identity
+  #     ec2 = Aws::EC2::Client.new(credentials: role_credentials)
   #
+  # If you omit `:client` option, a new {Aws::STS::Client} object will be
+  # constructed with additional options that were provided.
   #
-  # If you omit `:client` option, a new {STS::Client} object will be
-  # constructed.
+  # @see Aws::STS::Client#assume_role_with_web_identity
   class AssumeRoleWebIdentityCredentials
 
     include CredentialProvider

gems/aws-sdk-core/lib/aws-sdk-core/ecs_credentials.rb

@@ -4,6 +4,11 @@
 require 'net/http'
 
 module Aws
+  # An auto-refreshing credential provider that loads credentials from
+  # instances running in ECS.
+  #
+  #     ecs_credentials = Aws::ECSCredentials.new(retries: 3)
+  #     ec2 = Aws::EC2::Client.new(credentials: ecs_credentials)
   class ECSCredentials
 
     include CredentialProvider

gems/aws-sdk-core/lib/aws-sdk-core/instance_profile_credentials.rb

@@ -4,6 +4,11 @@
 require 'net/http'
 
 module Aws
+  # An auto-refreshing credential provider that loads credentials from
+  # EC2 instances.
+  #
+  #     instance_credentials = Aws::InstanceProfileCredentials.new
+  #     ec2 = Aws::EC2::Client.new(credentials: instance_credentials)
   class InstanceProfileCredentials
     include CredentialProvider
     include RefreshingCredentials

gems/aws-sdk-core/lib/aws-sdk-core/process_credentials.rb

@@ -1,19 +1,16 @@
 # frozen_string_literal: true
 
 module Aws
-
   # A credential provider that executes a given process and attempts
-  # to read its stdout to recieve a JSON payload containing the credentials
-  #
-  # Automatically handles refreshing credentials if an Expiration time is
-  # provided in the credentials payload
-  #
-  #     credentials = Aws::ProcessCredentials.new('/usr/bin/credential_proc').credentials
+  # to read its stdout to recieve a JSON payload containing the credentials.
   #
+  #     credentials = Aws::ProcessCredentials.new('/usr/bin/credential_proc')
   #     ec2 = Aws::EC2::Client.new(credentials: credentials)
   #
-  # More documentation on process based credentials can be found here:
-  # https://docs.aws.amazon.com/cli/latest/topic/config-vars.html#sourcing-credentials-from-external-processes
+  # Automatically handles refreshing credentials if an Expiration time is
+  # provided in the credentials payload.
+  #
+  # @see https://docs.aws.amazon.com/cli/latest/topic/config-vars.html#sourcing-credentials-from-external-processes
   class ProcessCredentials
 
     include CredentialProvider

gems/aws-sdk-core/lib/aws-sdk-core/sso_credentials.rb

@@ -1,17 +1,12 @@
 # frozen_string_literal: true
 
 module Aws
-  # An auto-refreshing credential provider that works by assuming a
-  # role via {Aws::SSO::Client#get_role_credentials} using a cached access
-  # token.  This class does NOT implement the SSO login token flow - tokens
+  # An auto-refreshing credential provider that assumes a role via
+  # {Aws::SSO::Client#get_role_credentials} using a cached access
+  # token. This class does NOT implement the SSO login token flow - tokens
   # must generated and refreshed separately by running `aws login` from the
   # AWS CLI with the correct profile.
   #
-  # For more background on AWS SSO see the official
-  # {https://docs.aws.amazon.com/singlesignon/latest/userguide/what-is.html what is SSO Userguide}
-  #
-  # ## Refreshing Credentials from SSO
-  #
   # The `SSOCredentials` will auto-refresh the AWS credentials from SSO. In
   # addition to AWS credentials expiring after a given amount of time, the
   # access token generated and cached from `aws login` will also expire.
@@ -20,19 +15,20 @@ module Aws
   # the token value, but this can be done by running `aws login` with the
   # correct profile.
   #
-  #
   #     # You must first run aws sso login --profile your-sso-profile
   #     sso_credentials = Aws::SSOCredentials.new(
   #       sso_account_id: '123456789',
   #       sso_role_name: "role_name",
   #       sso_region: "us-east-1",
   #       sso_start_url: 'https://your-start-url.awsapps.com/start'
   #     )
-  #
   #     ec2 = Aws::EC2::Client.new(credentials: sso_credentials)
   #
-  # If you omit `:client` option, a new {SSO::Client} object will be
-  # constructed.
+  # If you omit `:client` option, a new {Aws::SSO::Client} object will be
+  # constructed with additional options that were provided.
+  #
+  # @see Aws::SSO::Client#get_role_credentials
+  # @see https://docs.aws.amazon.com/singlesignon/latest/userguide/what-is.html
   class SSOCredentials
 
     include CredentialProvider

gems/aws-sdk-s3/CHANGELOG.md

@@ -1,6 +1,8 @@
 Unreleased Changes
 ------------------
 
+* Issue - Fix an issue where `ExpiredToken` errors were retried as if the request was from another region.
+
 1.113.1 (2022-04-25)
 ------------------
 

gems/aws-sdk-s3/lib/aws-sdk-s3/plugins/s3_signer.rb

@@ -138,7 +138,8 @@ def call(context)
           def handle_region_errors(response)
             if wrong_sigv4_region?(response) &&
                !fips_region?(response) &&
-               !custom_endpoint?(response)
+               !custom_endpoint?(response) &&
+               !expired_credentials?(response)
               get_region_and_retry(response.context)
             else
               response
@@ -162,6 +163,10 @@ def fips_region?(resp)
             resp.context.http_request.endpoint.host.include?('fips')
           end
 
+          def expired_credentials?(resp)
+            resp.context.http_response.body_contents.match(/<Code>ExpiredToken<\/Code>/)
+          end
+
           def custom_endpoint?(resp)
             resolved_suffix = Aws::Partitions::EndpointProvider.dns_suffix_for(
               resp.context.config.region,

gems/aws-sdk-s3/spec/client/region_detection_spec.rb

@@ -25,6 +25,14 @@ module S3
        'WlSrUk+8d2/rvcnEv2QXer0=</HostId></Error>'
       end
 
+      let(:expired_credentials_body) do
+        '<?xml version="1.0" encoding="UTF-8"?>\n<Error><Code>'\
+        'ExpiredToken</Code><Message>The provided token has expired'\
+        '</Message><RequestId>531B68B3613F5C96</RequestId>'\
+        '<HostId>TMnOREh0Ms0touCRX0XkJinw7xqsF0v/iFyA+nCC4d3PpF+k2oek'\
+        'WlSrUk+8d2/rvcnEv2QXer0=</HostId></Error>'
+      end
+
       before(:each) do
         allow($stderr).to receive(:write)
         S3::BUCKET_REGIONS.clear
@@ -86,6 +94,18 @@ module S3
         end
       end
 
+      context 'expired credentials' do
+        it 'does not detect region mismatch' do
+          client = S3::Client.new(client_opts.merge(region: 'us-west-2'))
+          stub_request(:put, 'https://s3.us-west-2.amazonaws.com/my.bucket/key')
+            .to_return(status: [400, 'ExpiredToken'], body: expired_credentials_body)
+
+          expect do
+            client.put_object(bucket: 'my.bucket', key: 'key')
+          end.to raise_error(Aws::S3::Errors::ExpiredToken)
+        end
+      end
+
       context 'using an access point ARN' do
         it 'detects the moved permanently and redirects' do
           stub_request(:put, 'https://myendpoint-123456789012.s3-accesspoint.us-east-1.amazonaws.com/key')