I am using the APIs from openldap and recently run into a problem which upset me. Following is the framework of the function.
LDAP* ld = NULL;
ldap_set_option(...); //using LDAP v3
ldap_set_option(...); // set LDAP_OPT_X_TLS_REQUIRE_CERT to deman
ldap_set_option(...); // set LDAP_OPT_X_TLS_CACERTDIR to /tmp/ldapsCA/
Above function is called in a while loop to authenticate users to a LDAPS server when authentication request comes up. This function works fine. BUT after one successful authentication, if I delete CA certificates of server's certificate under /tmp/ldapsCA/, subsequent authentications will STILL succeed. If restart this daemon, no authentication will succeed, because CA certificates under /tmp/ldapsCA/ has been deleted.
Why I delete CA certificates under /tmp/ldapsCA/? I just want to simulate "certificate change".
Is the openssl library cache someting??
Any one has any ideas about this? I will really appreciate it.