Description of problem:

Cannot update user when its login is lower than 5 chars with user_mod.


Version-Release number of selected component (if applicable):

[root@ibpidm01 ~]# cat /etc/*release
NAME="Red Hat Enterprise Linux Server"
VERSION="7.1 (Maipo)"
ID="rhel"
ID_LIKE="fedora"
VERSION_ID="7.1"
PRETTY_NAME="Red Hat Enterprise Linux"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:7.1:GA:server"
HOME_URL="https://www.redhat.com/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"

REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7"
REDHAT_BUGZILLA_PRODUCT_VERSION=7.1
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
REDHAT_SUPPORT_PRODUCT_VERSION="7.1"
Red Hat Enterprise Linux Server release 7.1 (Maipo)


How reproducible:

Code a client to authenticate, add and update users using RedHat's IPA JSON API.



Steps to Reproduce:

Add a new user with login name "nana" (user_add) and try to update user data finding with (user_mod).
Perhaps there is a problem with user_mod function when trying to find the created user. User_mod fires 4203, Type or value exists, DatabaseError exception.



Actual results (FROM ERROR_LOG):

FIRST AUTHENTICATE USER AS ADMIN, THEN ADD USER, LOGIN HAS HERE 5 CHARS LONG

[Mon Jun 06 15:41:18.585157 2016] [:error] [pid 37981] ipa: INFO: [jsonserver_session] admin@XYZ: user_add(u'nanas', givenname=u'Johanna', sn=u'Sanchez', mail=u'johanna', userpassword=u'********', random=False, noprivate=False, all=False, raw=False, no_members=False): SUCCESS


UPDATE USER DATA (LOGIN WON'T BE AFFECTED)
[Mon Jun 06 15:41:23.661572 2016] [:error] [pid 37981] ipa: INFO: [jsonserver_session] admin@XYZ: user_mod(u'nanas', givenname=u'Joha', sn=u'Sanchez', cn=u'Joha Sanchez', displayname=u'Joha Sanchez', gecos=u'Joha Sanchez', mail=u'johanna', userpassword=u'********', random=False, rights=False, all=False, raw=False, no_members=False): SUCCESS


FIRST AUTHENTICATE USER AS ADMIN, THEN ADD USER, LOGIN HAS HERE 4 CHARS LONG

[Mon Jun 06 15:41:18.585157 2016] [:error] [pid 37981] ipa: INFO: [jsonserver_session] admin@XYZ: user_add(u'nana', givenname=u'Johanna', sn=u'Sanchez', mail=u'johanna', userpassword=u'********', random=False, noprivate=False, all=False, raw=False, no_members=False): SUCCESS


UPDATE USER DATA (LOGIN WON'T BE AFFECTED) -> exception fires because user login is 4 chars long?

[Mon Jun 06 15:30:44.843877 2016] [:error] [pid 37981] ipa: INFO: [jsonserver_session] admin@XYZ: user_mod(u'nana', givenname=u'Joha', sn=u'Sanchez', cn=u'Joha Sanchez', displayname=u'Joha Sanchez', gecos=u'Joha Sanchez', mail=u'johanna', userpassword=u'********', random=False, rights=False, all=False, raw=False, no_members=False): DatabaseError


Expected results:

Any lenght constraint should be returned in exception errors. "Type or value exists" is not helpful.

I understand that login won't be updated and the is correct, but the other user fields should get updated and find by login with 4 chars should be possible.