157 lines
4.1 KiB
C
157 lines
4.1 KiB
C
/*-
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* Copyright (c) 2001,2003 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by ThinkSec AS and
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* NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <security/pam_appl.h>
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#include <security/pam_modules.h>
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#include <security/openpam.h>
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static int
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_pam_echo(pam_handle_t *pamh, int flags,
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int argc, const char *argv[])
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{
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char msg[PAM_MAX_MSG_SIZE];
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const void *str;
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const char *p, *q;
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int err, i, item;
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size_t len;
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if (flags & PAM_SILENT)
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return (PAM_SUCCESS);
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for (i = 0, len = 0; i < argc && len < sizeof(msg) - 1; ++i) {
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if (i > 0)
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msg[len++] = ' ';
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for (p = argv[i]; *p != '\0' && len < sizeof(msg) - 1; ++p) {
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if (*p != '%' || p[1] == '\0') {
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msg[len++] = *p;
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continue;
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}
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switch (*++p) {
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case 'H':
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item = PAM_RHOST;
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break;
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case 'h':
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/* not implemented */
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item = -1;
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break;
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case 's':
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item = PAM_SERVICE;
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break;
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case 't':
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item = PAM_TTY;
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break;
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case 'U':
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item = PAM_RUSER;
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break;
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case 'u':
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item = PAM_USER;
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break;
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default:
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item = -1;
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msg[len++] = *p;
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break;
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}
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if (item == -1)
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continue;
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err = pam_get_item(pamh, item, &str);
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if (err != PAM_SUCCESS)
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return (err);
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if (str == NULL)
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str = "(null)";
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for (q = str; *q != '\0' && len < sizeof(msg) - 1; ++q)
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msg[len++] = *q;
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}
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}
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msg[len] = '\0';
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return (pam_info(pamh, "%s", msg));
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}
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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, const char *argv[])
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{
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return (_pam_echo(pamh, flags, argc, argv));
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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_EXTERN int
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pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
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int argc, const char *argv[])
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{
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return (_pam_echo(pamh, flags, argc, argv));
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}
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PAM_EXTERN int
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pam_sm_open_session(pam_handle_t *pamh, int flags,
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int argc, const char *argv[])
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{
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return (_pam_echo(pamh, flags, argc, argv));
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}
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PAM_EXTERN int
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pam_sm_close_session(pam_handle_t *pamh, int flags,
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int argc, const char *argv[])
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{
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return (_pam_echo(pamh, flags, argc, argv));
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}
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PAM_EXTERN int
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pam_sm_chauthtok(pam_handle_t *pamh, int flags,
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int argc, const char *argv[])
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{
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if (flags & PAM_PRELIM_CHECK)
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return (PAM_SUCCESS);
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return (_pam_echo(pamh, flags, argc, argv));
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}
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PAM_MODULE_ENTRY("pam_echo");
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