Thank you, Robert.

> Le 26 mai 2021 à 17:26, Robert Newson <rnew...@apache.org> a écrit :
> 
> Hi,
> 
> I can confirm that Cloudant does not enable the proxy authentication handler 
> nor supports externalising authentication/authorization decisions in any 
> other way. Use either IBM IAM or the CouchDB _users database within your 
> account (note that the _users database option is not available for 
> Transaction Engine instances).
> 
> B.
> 
>> On 26 May 2021, at 08:38, Aurélien Bénel <aurelien.be...@utt.fr> wrote:
>> 
>> Dear all,
>> 
>> I'm totally aware that this list is dedicated to Apache CouchDB and not to 
>> IBM Cloudant, but please consider my question as related to Apache CouchDB 
>> compatibility with its ecosystem.
>> 
>> As stated by Apache CouchDB documentation: 
>> 
>> "Proxy authentication is very useful in case your application already uses 
>> some external authentication service and you don’t want to duplicate users 
>> and their roles in CouchDB."
>> Source: 
>> https://docs.couchdb.org/en/latest/api/server/authn.html#proxy-authentication
>> 
>> Hence a reverse proxy can authenticate a user and send the username (as 
>> `X-Auth-CouchDB-UserName` HTTP header) along with a token (as 
>> `X-Auth-CouchDB-Token`) generated from this username and a general shared 
>> secret (not related with this particular user). 
>> 
>> As stated: 
>> 
>> This authentication method allows creation of a User Context Object for 
>> remotely authenticated user. 
>> 
>> This user context can be useful in a `validate_doc_update` function (for 
>> authorizations) or in an `update` function (for accounting).
>> 
>> Among third party CouchDB hosts, IBM cloudant is one of the most famous. 
>> However the product is slightly different, especially concerning security 
>> (see: 
>> https://cloud.ibm.com/docs/Cloudant?topic=Cloudant-couchdb-and-cloudant). 
>> 
>> Whereas I am familiar with proxy authentication in Apache CouchDB, I didn't 
>> manage to setup a similar feature in Cloudant nor to find documentation 
>> about it. In particular, IBM "API keys" (composed by a key and a password) 
>> don't seem to be compatible with setting a different username as 
>> `X-Auth-CouchDB-UserName`. 
>> 
>> Does anyone succeeded in setting up (in Cloudant) a user context different 
>> from the credentials used for authentication? Or is there a doc anywhere 
>> saying that it is not possible?
>> 
>> Or, is there a similar hosted service (esp. with free tier) but with proxy 
>> authentication enabled?
>> 
>> 
>> Best regards,
>> 
>> Aurélien
>> 
>> P.S. My question was asked also on StackOverflow: 
>> https://stackoverflow.com/questions/67537968

Reply via email to