Mercurial > prosody-modules
changeset 5448:9d542e86e19a
mod_http_oauth2: Allow requesting a subset of scopes on token refresh
This enables clients to request access tokens with fewer permissions
than the grant they were given, reducing impact of token leak. Clients
could e.g. request access tokens with some privileges and immediately
revoke them after use, or other strategies.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Thu, 11 May 2023 21:40:09 +0200 |
| parents | aa4828f040c5 |
| children | 9c19a6b8e542 |
| files | mod_http_oauth2/mod_http_oauth2.lua |
| diffstat | 1 files changed, 11 insertions(+), 3 deletions(-) [+] |
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--- a/mod_http_oauth2/mod_http_oauth2.lua Thu May 11 19:33:44 2023 +0200 +++ b/mod_http_oauth2/mod_http_oauth2.lua Thu May 11 21:40:09 2023 +0200 @@ -411,14 +411,22 @@ end local refresh_scopes = refresh_token_info.grant.data.oauth2_scopes; + + if params.scope then + local granted_scopes = set.new(parse_scopes(refresh_scopes)); + local requested_scopes = parse_scopes(params.scope); + refresh_scopes = array.filter(requested_scopes, function(scope) + return granted_scopes:contains(scope); + end):concat(" "); + end + + local username = jid.split(refresh_token_info.jid); local new_scopes, role = filter_scopes(username, refresh_scopes); -- new_access_token() requires the actual token refresh_token_info.token = params.refresh_token; - return json.encode(new_access_token( - refresh_token_info.jid, role, new_scopes, client, nil, refresh_token_info - )); + return json.encode(new_access_token(refresh_token_info.jid, role, new_scopes, client, nil, refresh_token_info)); end -- RFC 7636 Proof Key for Code Exchange by OAuth Public Clients