PAM: handled multiple certs in the responder This patch refactors the handling of the certificate and the attributes to address the certificate on the Smartcard (module name, token name and key id). Instead of using individual variables the values are put into a new struct cert_auth_info. Since the new struct can be used as a list the PAM responder can now handle multiple certificates on the Smartcard and can send the needed data to pam_sss with multiple SSS_PAM_CERT_INFO messages. Unit tests are added to confirm the expected behavior. Related to https://pagure.io/SSSD/sssd/issue/3560 Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com> Tested-by: Scott Poore <spoore@redhat.com>

TESTS: Check new line at end of file Reviewed-by: Nikolai Kondrashov <Nikolai.Kondrashov@redhat.com>

TESTS: Make whitespace_test pass without whitespace Make whitespace_test pass if no trailing whitespace was detected at all. Add two comments explaining how searching and failure handling works. Fixes: https://fedorahosted.org/sssd/ticket/2816 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

TESTS: Add trailing whitespace test Signed-off-by: Lukas Slebodnik <lslebodn@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com> Reviewed-by: Pavel Reichl <preichl@redhat.com>