Hi,
I have built a test pam module to run with sshd. The codes are as following:
#define PAM_SM_AUTH
#define _PAM_EXTERN_FUNCTIONS
#include <security/_pam_macros.h>
#include <security/pam_modules.h>
#include <security/pam_ext.h>
PAM_EXTERN int pam_sm_authenticate(pam_handle_t * pamh, int flags
,int argc, const char **argv)
{
unsigned int ctrl;
int retval;
const char *name;
const void *p;
ctrl = _set_ctrl(pamh, flags, NULL, argc, argv);
/* get the user'name' */
retval = pam_get_user(pamh, &name, NULL);
if (retval == PAM_SUCCESS)
{
pam_syslog(pamh, LOG_DEBUG,
"XOS:checking logins for '%s'", name);
}
return retval;
}
#ifdef PAM_STATIC
struct pam_module _pam_xos_auth_modstruct = {
"pam_xos_auth",
pam_sm_authenticate,
NULL,
NULL,
NULL,
NULL,
NULL,
};
I compiled as pam_xos_auth.so, and inserted in pam.d/sshd
# cat sshd
auth required /path/to/pam_xos_auth.so
...
When I used the ssh to login, I was told I had no permission. And
also, I checked the
/var/log/secure and found:
# cat /var/log/secure
...
Mar 8 10:12:19 FedoraC4 sshd[4814]: PAM unable to
dlopen(/path/to/pam_xos_auth.so)
Mar 8 10:12:19 FedoraC4 sshd[4814]: PAM [dlerror:
/path/to/pam_xos_auth.so: undefined symbol: pam_syslog]
Mar 8 10:12:19 FedoraC4 sshd[4814]: PAM adding faulty module:
/path/to/pam_xos_auth.so
Mar 8 10:12:24 FedoraC4 sshd[4814]: Failed password for anqin from
::ffff:10.61.0.7 port 4228 ssh2
what is the matter with this? Could somebody give me some advices?
Thank you very much!
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