24fe7ba0d9
- 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
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/*-
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* Copyright (c) 2001 Mark R V Murray
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* All rights reserved.
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* Copyright (c) 2001 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/types.h>
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#include <sys/stat.h>
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#include <pwd.h>
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#include <ttyent.h>
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#include <string.h>
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#define PAM_SM_ACCOUNT
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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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#define TTY_PREFIX "/dev/"
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PAM_EXTERN int
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pam_sm_acct_mgmt(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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struct passwd *pwd;
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struct ttyent *ty;
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const char *user, *tty;
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int pam_err;
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pam_err = pam_get_user(pamh, &user, NULL);
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if (pam_err != PAM_SUCCESS)
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return (pam_err);
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if (user == NULL || (pwd = getpwnam(user)) == NULL)
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return (PAM_SERVICE_ERR);
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PAM_LOG("Got user: %s", user);
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/* If the user is not root, secure ttys do not apply */
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if (pwd->pw_uid != 0)
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return (PAM_SUCCESS);
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pam_err = pam_get_item(pamh, PAM_TTY, (const void **)&tty);
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if (pam_err != PAM_SUCCESS)
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return (pam_err);
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PAM_LOG("Got TTY: %s", tty);
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/* Ignore any "/dev/" on the PAM_TTY item */
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if (tty != NULL && strncmp(TTY_PREFIX, tty, sizeof(TTY_PREFIX)) == 0) {
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PAM_LOG("WARNING: PAM_TTY starts with " TTY_PREFIX);
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tty += sizeof(TTY_PREFIX) - 1;
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}
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if (tty != NULL && (ty = getttynam(tty)) != NULL &&
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(ty->ty_status & TTY_SECURE) != 0)
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return (PAM_SUCCESS);
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PAM_VERBOSE_ERROR("Not on secure TTY");
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return (PAM_AUTH_ERR);
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}
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PAM_MODULE_ENTRY("pam_securetty");
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