a8ed917937
- add __unused where appropriate
- PAM_RETURN -> return since OpenPAM already logs the return value.
- make PAM_LOG use openpam_log()
- make PAM_VERBOSE_ERROR use openpam_get_option() and check flags
for PAM_SILENT
- remove dummy functions since OpenPAM handles missing service
functions
- fix various warnings
Sponsored by: DARPA, NAI Labs
138 lines
4.0 KiB
C
138 lines
4.0 KiB
C
/*-
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* Copyright 1998 Juniper Networks, Inc.
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* All rights reserved.
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* Portions of this software were developed for the FreeBSD Project by
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* ThinkSec AS and NAI Labs, the Security Research Division of Network
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* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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* ("CBOSS"), as part of the DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define PAM_SM_AUTH
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#include <security/pam_appl.h>
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#include <security/pam_modules.h>
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#include <security/pam_mod_misc.h>
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#include "klogin.h"
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/* Globals used by klogin.c */
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int notickets = 1;
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int noticketsdontcomplain = 1;
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char *krbtkfile_env;
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PAM_EXTERN int
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pam_sm_authenticate(pam_handle_t *pamh, int flags,
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int argc __unused, const char *argv[] __unused)
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{
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int retval;
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const char *user;
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char *principal;
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char *instance;
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const char *password;
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char localhost[MAXHOSTNAMELEN + 1];
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struct passwd *pwd;
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retval = pam_get_user(pamh, &user, NULL);
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if (retval != PAM_SUCCESS)
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return (retval);
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PAM_LOG("Got user: %s", user);
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retval = pam_get_authtok(pamh, PAM_AUTHTOK, &password, NULL);
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if (retval != PAM_SUCCESS)
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return (retval);
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PAM_LOG("Got password");
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if (gethostname(localhost, sizeof localhost - 1) == -1)
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return (PAM_SYSTEM_ERR);
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PAM_LOG("Got localhost: %s", localhost);
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principal = strdup(user);
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if (principal == NULL)
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return (PAM_BUF_ERR);
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instance = strchr(principal, '.');
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if (instance != NULL)
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*instance++ = '\0';
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else
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instance = strchr(principal, '\0');
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PAM_LOG("Got principal.instance: %s.%s", principal, instance);
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retval = PAM_AUTH_ERR;
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pwd = getpwnam(user);
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if (pwd != NULL) {
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if (klogin(pwd, instance, localhost, password) == 0) {
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if (notickets && !noticketsdontcomplain)
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PAM_VERBOSE_ERROR("Warning: no Kerberos tickets issued");
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/*
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* XXX - I think the ticket file isn't supposed to
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* be created until pam_sm_setcred() is called.
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*/
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if (krbtkfile_env != NULL)
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setenv("KRBTKFILE", krbtkfile_env, 1);
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retval = PAM_SUCCESS;
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}
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PAM_LOG("Done klogin()");
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}
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/*
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* The PAM infrastructure will obliterate the cleartext
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* password before returning to the application.
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*/
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free(principal);
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if (retval != PAM_SUCCESS)
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PAM_VERBOSE_ERROR("Kerberos IV refuses you");
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return (retval);
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}
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PAM_EXTERN int
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pam_sm_setcred(pam_handle_t *pamh __unused, int flags __unused,
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int argc __unused, const char *argv[] __unused)
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{
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return (PAM_SUCCESS);
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}
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PAM_MODULE_ENTRY("pam_kerberosIV");
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