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Is there an easy way to test the credentials of a user against an LDAP instance? I know how to write a Java program that would take the 'User DN' and password, and check it against the LDAP instance. However is there any easier way? Specially a method that not only authenticates the user, but also lists all the user's roles.
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In order to authenticate a user with an LDAP directory you first need to obtain their DN as well as their password. With a login form, people typically enter a simple identifier such as their username or email address. You don't expect them to memorise the DN of their directory entry.
Steps. Go to the System → Password Credential Validators screen, and then click Create New Instance. On the Type screen, select LDAP Username Password Credential Validator from the list and provide a name and an ID for it.
ldapwhoami -vvv -h <hostname> -p <port> -D <binddn> -x -w <passwd>, where binddn is the DN of the person whose credentials you are authenticating.
On success (i.e., valid credentials), you get Result: Success (0). On failure, you get ldap_bind: Invalid credentials (49).
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