46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
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* auth.c -- PAM authorization code, common between chsh and chfn
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* (c) 2012 by Cody Maloney <cmaloney@theoreticalchaos.com>
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*
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* this program is free software. you can redistribute it and
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* modify it under the terms of the gnu general public license.
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* there is no warranty.
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*
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*/
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#include "auth.h"
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#include "pamfail.h"
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int auth_pam(const char *service_name, uid_t uid, const char *username)
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{
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if (uid != 0) {
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pam_handle_t *pamh = NULL;
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struct pam_conv conv = { misc_conv, NULL };
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int retcode;
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retcode = pam_start(service_name, username, &conv, &pamh);
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if (pam_fail_check(pamh, retcode))
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return FALSE;
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retcode = pam_authenticate(pamh, 0);
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if (pam_fail_check(pamh, retcode))
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return FALSE;
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retcode = pam_acct_mgmt(pamh, 0);
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if (retcode == PAM_NEW_AUTHTOK_REQD)
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retcode =
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pam_chauthtok(pamh, PAM_CHANGE_EXPIRED_AUTHTOK);
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if (pam_fail_check(pamh, retcode))
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return FALSE;
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retcode = pam_setcred(pamh, 0);
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if (pam_fail_check(pamh, retcode))
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return FALSE;
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pam_end(pamh, 0);
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/* no need to establish a session; this isn't a
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* session-oriented activity... */
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}
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return TRUE;
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}
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