Software / code / prosody-modules
Diff
mod_http_oauth2/mod_http_oauth2.lua @ 5406:b86d80e21c60
mod_http_oauth2: Validate consistency of response and grant types
Ensure that these correlated fields make sense per RFC 7591 § 2.1, even
though we currently only check the response type during authorization.
This could probably all be deleted if (when!) we remove the implicit
grant, since then these things don't make any sense anymore.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 02 May 2023 16:34:31 +0200 |
| parent | 5405:c7a5caad28ef |
| child | 5407:149634647b48 |
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--- a/mod_http_oauth2/mod_http_oauth2.lua Tue May 02 16:31:25 2023 +0200 +++ b/mod_http_oauth2/mod_http_oauth2.lua Tue May 02 16:34:31 2023 +0200 @@ -791,6 +791,21 @@ end end + local grant_types = set.new(client_metadata.grant_types); + local response_types = set.new(client_metadata.response_types); + + if grant_types:contains("authorization_code") and not response_types:contains("code") then + return nil, oauth_error("invalid_client_metadata", "Inconsistency between 'grant_types' and 'response_types'"); + elseif grant_types:contains("implicit") and not response_types:contains("token") then + return nil, oauth_error("invalid_client_metadata", "Inconsistency between 'grant_types' and 'response_types'"); + end + + if set.intersection(grant_types, allowed_grant_type_handlers):empty() then + return nil, oauth_error("invalid_client_metadata", "No allowed 'grant_types' specified"); + elseif set.intersection(response_types, allowed_response_type_handlers):empty() then + return nil, oauth_error("invalid_client_metadata", "No allowed 'response_types' specified"); + end + -- Ensure each signed client_id JWT is unique, short ID and issued at -- timestamp should be sufficient to rule out brute force attacks client_metadata.nonce = id.short();
