https://github.com/gturri/dokujclient

https://www.dokuwiki.org/plugin:authpdo#configuration

SELECT oc_users.uid AS 'id',
oc_users.displayname AS 'name',
oc_users.password AS 'pass',
oc_preferences.configvalue AS 'mail' FROM oc_users INNER JOIN oc_preferences ON oc_users.uid=oc_preferences.userid
WHERE oc_users.uid = 'admin' AND oc_preferences.configkey = 'email'

SELECT oc_group_user.gid FROM oc_group_user WHERE oc_group_user.uid = 'thommie'

SELECT gid FROM `oc_groups` WHERE 1

SELECT "oc_accounts.user_id" as "user",
"oc_accounts.display_name" as "name",
"oc_accounts.email" as "mail",
"substr(oc_users.password, 3)" as "hash"
FROM "oc_users" LEFT JOIN "oc_users" ON "oc_accounts.user_id=oc_users.uid"
WHERE "oc_accounts.user_id" LIKE :user

Owncloud Code hasher: https://github.com/owncloud/core/blob/master/lib/private/Security/Hasher.php