freebsd-dev/lib/libpam/modules/pam_echo/pam_echo.c
Dag-Erling Smørgrav f65b218085 Just to show that PAM can do almost anything from the ridiculous to the
obscene, or - as they say in New York - sophisticated, add pam_echo(8) and
pam_exec(8) to our ever-lengthening roster of PAM modules.

Sponsored by:	DARPA, NAI Labs.
2002-05-23 22:03:06 +00:00

127 lines
3.7 KiB
C

/*-
* Copyright (c) 2001 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by ThinkSec AS and
* NAI Labs, the Security Research Division of Network Associates, Inc.
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
* DARPA CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <security/pam_appl.h>
#include <security/pam_modules.h>
#include <security/openpam.h>
static int
_pam_echo(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
struct pam_message msg;
const struct pam_message *msgp;
const struct pam_conv *pamc;
struct pam_response *resp;
size_t len;
int i, pam_err;
if (flags & PAM_SILENT)
return (PAM_SUCCESS);
pam_err = pam_get_item(pamh, PAM_CONV, (const void **)&pamc);
if (pam_err != PAM_SUCCESS)
return (pam_err);
for (i = 0, len = 0; i < argc; ++i)
len += strlen(argv[i]) + 1;
if ((msg.msg = malloc(len)) == NULL)
return (PAM_BUF_ERR);
for (i = 0, len = 0; i < argc; ++i)
len += sprintf(msg.msg + len, "%s%s", i ? " " : "", argv[i]);
msg.msg[len] = '\0';
msg.msg_style = PAM_TEXT_INFO;
msgp = &msg;
resp = NULL;
pam_err = (pamc->conv)(1, &msgp, &resp, pamc->appdata_ptr);
free(resp);
free(msg.msg);
return (pam_err);
}
PAM_EXTERN int
pam_sm_authenticate(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
return (_pam_echo(pamh, flags, argc, argv));
}
PAM_EXTERN int
pam_sm_setcred(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
return (_pam_echo(pamh, flags, argc, argv));
}
PAM_EXTERN int
pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
return (_pam_echo(pamh, flags, argc, argv));
}
PAM_EXTERN int
pam_sm_open_session(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
return (_pam_echo(pamh, flags, argc, argv));
}
PAM_EXTERN int
pam_sm_close_session(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
return (_pam_echo(pamh, flags, argc, argv));
}
PAM_EXTERN int
pam_sm_chauthtok(pam_handle_t *pamh, int flags,
int argc, const char *argv[])
{
return (_pam_echo(pamh, flags, argc, argv));
}
PAM_MODULE_ENTRY("pam_echo");