diff options
Diffstat (limited to 'lib/libpam/modules/pam_echo/pam_echo.c')
| -rw-r--r-- | lib/libpam/modules/pam_echo/pam_echo.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/lib/libpam/modules/pam_echo/pam_echo.c b/lib/libpam/modules/pam_echo/pam_echo.c new file mode 100644 index 0000000..ff00859 --- /dev/null +++ b/lib/libpam/modules/pam_echo/pam_echo.c @@ -0,0 +1,156 @@ +/*- + * Copyright (c) 2001,2003 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[]) +{ + char msg[PAM_MAX_MSG_SIZE]; + const void *str; + const char *p, *q; + int err, i, item; + size_t len; + + if (flags & PAM_SILENT) + return (PAM_SUCCESS); + for (i = 0, len = 0; i < argc && len < sizeof(msg) - 1; ++i) { + if (i > 0) + msg[len++] = ' '; + for (p = argv[i]; *p != '\0' && len < sizeof(msg) - 1; ++p) { + if (*p != '%' || p[1] == '\0') { + msg[len++] = *p; + continue; + } + switch (*++p) { + case 'H': + item = PAM_RHOST; + break; + case 'h': + /* not implemented */ + item = -1; + break; + case 's': + item = PAM_SERVICE; + break; + case 't': + item = PAM_TTY; + break; + case 'U': + item = PAM_RUSER; + break; + case 'u': + item = PAM_USER; + break; + default: + item = -1; + msg[len++] = *p; + break; + } + if (item == -1) + continue; + err = pam_get_item(pamh, item, &str); + if (err != PAM_SUCCESS) + return (err); + if (str == NULL) + str = "(null)"; + for (q = str; *q != '\0' && len < sizeof(msg) - 1; ++q) + msg[len++] = *q; + } + } + msg[len] = '\0'; + return (pam_info(pamh, "%s", msg)); +} + +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 __unused, int flags __unused, + int argc __unused, const char *argv[] __unused) +{ + + return (PAM_SUCCESS); +} + +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[]) +{ + + if (flags & PAM_PRELIM_CHECK) + return (PAM_SUCCESS); + return (_pam_echo(pamh, flags, argc, argv)); +} + +PAM_MODULE_ENTRY("pam_echo"); |
