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Re: reg ldap over ssl

On Tue, 1 Jul 2008, prasanth allada wrote:
i am trying to start an ldap connection over SSL

my code goes like this.


when i call the ldap_start_tls_s() i get an error saying tat it cant contact the ldap server.

Right, because ldap_start_tls_s() performs the LDAP start TLS operation, but for ldaps the client is supposed to simply negotiate TLS/SSL upon connection, without sending an LDAP operation first.

The Right Thing is to stop using ldap_init() and instead use ldap_initialize(), passing it an URI of "ldaps://hostname".

(Note that it'll automatically use port 636 when the URI schema is "ldaps", just as it'll automatically use port 389 when the schema is "ldap".)

i have the CA certificate and the server certificate.
Can you tell me which certificate should i use in the code.

The client only needs the CA certificate. Set the LDAP_OPT_X_TLS_CACERTFILE option to the path to the PEM file, or set the LDAP_OPT_X_TLS_CACERTDIR option to a directory holding the PEM file with hashed paths. (Check out the docs for SSL_CTX_load_verify_locations() for the details of the hashing.)

Note that in versions before 2.4.0, those are *global* options: ldap_set_option() *must* be passed a NULL LDAP handle when setting them. As of 2.4.0 they're per-LDAP-handle only and must be set on each handle you create.

Philip Guenther