Feature Request: Minio (S3) LDAP authentication flow.

[StraightfaceStudios]

Minio when running in LDAP authentication mode doesn't simply take a key and secret there is an intermediate key request.

https://min.io/docs/minio/linux/developers/security-token-service/AssumeRoleWithLDAPIdentity.html#minio-sts-assumerolewithldapidentity

First the authentication request sends a request using the LDAP credentials that then is issued a temporary key that can be used. Similar to an oAuth workflow.

POST https://minio.example.net?Action=AssumeRoleWithLDAPIdentity
&LDAPUsername=USERNAME
&LDAPPassword=PASSWORD
&Version=2011-06-15
&Policy={}

<AssumeRoleWithLDAPIdentityResponse xmlns="https://sts.amazonaws.com/doc/2011-06-15/">
<AssumeRoleWithLDAPIdentityResult>
   <AssumedRoleUser>
      <Arn/>
      <AssumeRoleId/>
   </AssumedRoleUser>
   <Credentials>
      <AccessKeyId>Y4RJU1RNFGK48LGO9I2S</AccessKeyId>
      <SecretAccessKey>sYLRKS1Z7hSjluf6gEbb9066hnx315wHTiACPAjg</SecretAccessKey>
      <Expiration>2019-08-08T20:26:12Z</Expiration>
      <SessionToken>eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJhY2Nlc3NLZXkiOiJZNFJKVTFSTkZHSzQ4TEdPOUkyUyIsImF1ZCI6IlBvRWdYUDZ1Vk80NUlzRU5SbmdEWGo1QXU1WWEiLCJhenAiOiJQb0VnWFA2dVZPNDVJc0VOUm5nRFhqNUF1NVlhIiwiZXhwIjoxNTQxODExMDcxLCJpYXQiOjE1NDE4MDc0NzEsImlzcyI6Imh0dHBzOi8vbG9jYWxob3N0Ojk0NDMvb2F1dGgyL3Rva2VuIiwianRpIjoiYTBiMjc2MjktZWUxYS00M2JmLTg3MzktZjMzNzRhNGNkYmMwIn0.ewHqKVFTaP-j_kgZrcOEKroNUjk10GEp8bqQjxBbYVovV0nHO985VnRESFbcT6XMDDKHZiWqN2vi_ETX_u3Q-w</SessionToken>
   </Credentials>
</AssumeRoleWithLDAPIdentityResult>
<ResponseMetadata/>
</AssumeRoleWithLDAPIdentityResponse>```

[dkocher]

Very similar to #13804 with AssumeRoleWithWebIdentity.

[dkocher]

References

• AssumeRoleWithLDAPIdentity ¹

Footnotes

1. https://min.io/docs/minio/linux/developers/security-token-service/AssumeRoleWithLDAPIdentity.html ↩