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/*
* $Id$
*
* A central point for invoking getlogin(). Hopefully, this is a
* little harder to spoof than all the other versions that are out
* there.
*/
#include "pam_modutil_private.h"
#include <stdlib.h>
#include <unistd.h>
#define _PAMMODUTIL_GETLOGIN "_pammodutil_getlogin"
const char *
pam_modutil_getlogin(pam_handle_t *pamh)
{
int status;
const void *logname;
char *curr_user;
status = pam_get_data(pamh, _PAMMODUTIL_GETLOGIN, &logname);
if (status == PAM_SUCCESS) {
return logname;
}
logname = getlogin();
if (logname == NULL) {
return NULL;
}
curr_user = strdup(logname);
if (curr_user == NULL) {
return NULL;
}
status = pam_set_data(pamh, _PAMMODUTIL_GETLOGIN, curr_user,
pam_modutil_cleanup);
if (status != PAM_SUCCESS) {
free(curr_user);
return NULL;
}
return curr_user;
}
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