diff options
Diffstat (limited to 'modules/pam_unix/pam_unix_auth.c')
| -rw-r--r-- | modules/pam_unix/pam_unix_auth.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/modules/pam_unix/pam_unix_auth.c b/modules/pam_unix/pam_unix_auth.c deleted file mode 100644 index dfedd608..00000000 --- a/modules/pam_unix/pam_unix_auth.c +++ /dev/null @@ -1,229 +0,0 @@ -/* - * Copyright Alexander O. Yuriev, 1996. All rights reserved. - * NIS+ support by Thorsten Kukuk <kukuk@weber.uni-paderborn.de> - * Copyright Jan Rêkorajski, 1999. All rights reserved. - * - * 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, and the entire permission notice in its entirety, - * including the disclaimer of warranties. - * 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. - * - * ALTERNATIVELY, this product may be distributed under the terms of - * the GNU Public License, in which case the provisions of the GPL are - * required INSTEAD OF the above restrictions. (This clause is - * necessary due to a potential bad interaction between the GPL and - * the restrictions contained in a BSD-style copyright.) - * - * THIS SOFTWARE IS PROVIDED ``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 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. - */ - -/* #define DEBUG */ - -#include "config.h" - -#include <stdio.h> -#include <stdlib.h> -#include <stdarg.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include <ctype.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <syslog.h> - -/* indicate the following groups are defined */ - -#define PAM_SM_AUTH - -#define _PAM_EXTERN_FUNCTIONS -#include <security/_pam_macros.h> -#include <security/pam_modules.h> -#include <security/pam_ext.h> - -#include "support.h" - -/* - * PAM framework looks for these entry-points to pass control to the - * authentication module. - */ - -/* Fun starts here :) - - * pam_sm_authenticate() performs UNIX/shadow authentication - * - * First, if shadow support is available, attempt to perform - * authentication using shadow passwords. If shadow is not - * available, or user does not have a shadow password, fallback - * onto a normal UNIX authentication - */ - -#define _UNIX_AUTHTOK "-UN*X-PASS" - -#define AUTH_RETURN \ -do { \ - if (on(UNIX_LIKE_AUTH, ctrl) && ret_data) { \ - D(("recording return code for next time [%d]", \ - retval)); \ - *ret_data = retval; \ - pam_set_data(pamh, "unix_setcred_return", \ - (void *) ret_data, setcred_free); \ - } else if (ret_data) \ - free (ret_data); \ - D(("done. [%s]", pam_strerror(pamh, retval))); \ - return retval; \ -} while (0) - - -static void -setcred_free (pam_handle_t *pamh UNUSED, void *ptr, int err UNUSED) -{ - if (ptr) - free (ptr); -} - - -PAM_EXTERN int pam_sm_authenticate(pam_handle_t * pamh, int flags - ,int argc, const char **argv) -{ - unsigned int ctrl; - int retval, *ret_data = NULL; - const char *name; - const void *p; - - D(("called.")); - - ctrl = _set_ctrl(pamh, flags, NULL, NULL, argc, argv); - - /* Get a few bytes so we can pass our return value to - pam_sm_setcred(). */ - if (on(UNIX_LIKE_AUTH, ctrl)) - ret_data = malloc(sizeof(int)); - - /* get the user'name' */ - - retval = pam_get_user(pamh, &name, NULL); - if (retval == PAM_SUCCESS) { - /* - * Various libraries at various times have had bugs related to - * '+' or '-' as the first character of a user name. Don't - * allow this characters here. - */ - if (name == NULL || name[0] == '-' || name[0] == '+') { - pam_syslog(pamh, LOG_ERR, "bad username [%s]", name); - retval = PAM_USER_UNKNOWN; - AUTH_RETURN; - } - if (retval == PAM_SUCCESS && on(UNIX_DEBUG, ctrl)) - D(("username [%s] obtained", name)); - } else { - D(("trouble reading username")); - if (retval == PAM_CONV_AGAIN) { - D(("pam_get_user/conv() function is not ready yet")); - /* it is safe to resume this function so we translate this - * retval to the value that indicates we're happy to resume. - */ - retval = PAM_INCOMPLETE; - } - AUTH_RETURN; - } - - /* if this user does not have a password... */ - - if (_unix_blankpasswd(pamh, ctrl, name)) { - D(("user '%s' has blank passwd", name)); - name = NULL; - retval = PAM_SUCCESS; - AUTH_RETURN; - } - /* get this user's authentication token */ - - retval = _unix_read_password(pamh, ctrl, NULL, _("Password: "), NULL - ,_UNIX_AUTHTOK, &p); - if (retval != PAM_SUCCESS) { - if (retval != PAM_CONV_AGAIN) { - pam_syslog(pamh, LOG_CRIT, - "auth could not identify password for [%s]", name); - } else { - D(("conversation function is not ready yet")); - /* - * it is safe to resume this function so we translate this - * retval to the value that indicates we're happy to resume. - */ - retval = PAM_INCOMPLETE; - } - name = NULL; - AUTH_RETURN; - } - D(("user=%s, password=[%s]", name, p)); - - /* verify the password of this user */ - retval = _unix_verify_password(pamh, name, p, ctrl); - name = p = NULL; - - AUTH_RETURN; -} - - -/* - * The only thing _pam_set_credentials_unix() does is initialization of - * UNIX group IDs. - * - * Well, everybody but me on linux-pam is convinced that it should not - * initialize group IDs, so I am not doing it but don't say that I haven't - * warned you. -- AOY - */ - -PAM_EXTERN int -pam_sm_setcred (pam_handle_t *pamh, int flags UNUSED, - int argc UNUSED, const char **argv UNUSED) -{ - int retval; - const void *pretval = NULL; - - D(("called.")); - - retval = PAM_SUCCESS; - - D(("recovering return code from auth call")); - /* We will only find something here if UNIX_LIKE_AUTH is set -- - don't worry about an explicit check of argv. */ - if (pam_get_data(pamh, "unix_setcred_return", &pretval) == PAM_SUCCESS - && pretval) { - retval = *(const int *)pretval; - pam_set_data(pamh, "unix_setcred_return", NULL, NULL); - D(("recovered data indicates that old retval was %d", retval)); - } - - return retval; -} - -#ifdef PAM_STATIC -struct pam_module _pam_unix_auth_modstruct = { - "pam_unix_auth", - pam_sm_authenticate, - pam_sm_setcred, - NULL, - NULL, - NULL, - NULL, -}; -#endif |