diff options
Diffstat (limited to 'modules/pam_nologin/pam_nologin.c')
| -rw-r--r-- | modules/pam_nologin/pam_nologin.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/modules/pam_nologin/pam_nologin.c b/modules/pam_nologin/pam_nologin.c deleted file mode 100644 index 54ecc82b..00000000 --- a/modules/pam_nologin/pam_nologin.c +++ /dev/null @@ -1,180 +0,0 @@ -/* pam_nologin module */ - -/* - * $Id$ - * - * Written by Michael K. Johnson <johnsonm@redhat.com> 1996/10/24 - * - */ - -#include "config.h" - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <syslog.h> -#include <pwd.h> - -#include <security/_pam_macros.h> -/* - * here, we make a definition for the externally accessible function - * in this file (this definition is required for static a module - * but strongly encouraged generally) it is used to instruct the - * modules include file to define the function prototypes. - */ - -#define PAM_SM_AUTH -#define PAM_SM_ACCOUNT - -#include <security/pam_modules.h> -#include <security/pam_modutil.h> -#include <security/pam_ext.h> - -/* - * parse some command line options - */ -struct opt_s { - int retval_when_nofile; - const char *nologin_file; -}; - -static void -parse_args(pam_handle_t *pamh, int argc, const char **argv, struct opt_s *opts) -{ - int i; - - memset(opts, 0, sizeof(*opts)); - - opts->retval_when_nofile = PAM_IGNORE; - opts->nologin_file = "/etc/nologin"; - - for (i=0; i<argc; ++i) { - if (!strcmp("successok", argv[i])) { - opts->retval_when_nofile = PAM_SUCCESS; - } else if (!strncmp("file=", argv[i], 5)) { - opts->nologin_file = argv[i] + 5; - } else { - pam_syslog(pamh, LOG_ERR, "unknown option: %s", argv[i]); - } - } -} - -/* - * do the meat of the work for this module - */ - -static int perform_check(pam_handle_t *pamh, struct opt_s *opts) -{ - const char *username; - int retval = opts->retval_when_nofile; - int fd; - - if ((pam_get_user(pamh, &username, NULL) != PAM_SUCCESS) || !username) { - pam_syslog(pamh, LOG_WARNING, "cannot determine username"); - return PAM_USER_UNKNOWN; - } - - if ((fd = open(opts->nologin_file, O_RDONLY, 0)) >= 0) { - - char *mtmp=NULL; - int msg_style = PAM_TEXT_INFO; - struct passwd *user_pwd; - struct stat st; - - user_pwd = pam_modutil_getpwnam(pamh, username); - if (user_pwd == NULL) { - retval = PAM_USER_UNKNOWN; - msg_style = PAM_ERROR_MSG; - } else if (user_pwd->pw_uid) { - retval = PAM_AUTH_ERR; - msg_style = PAM_ERROR_MSG; - } - - /* fill in message buffer with contents of /etc/nologin */ - if (fstat(fd, &st) < 0) { - /* give up trying to display message */ - goto clean_up_fd; - } - - mtmp = malloc(st.st_size+1); - if (!mtmp) { - pam_syslog(pamh, LOG_ERR, "out of memory"); - retval = PAM_BUF_ERR; - goto clean_up_fd; - } - - if (pam_modutil_read(fd, mtmp, st.st_size) == st.st_size) { - mtmp[st.st_size] = '\0'; - (void) pam_prompt (pamh, msg_style, NULL, "%s", mtmp); - } - else - retval = PAM_SYSTEM_ERR; - - free(mtmp); - - clean_up_fd: - - close(fd); - } - - return retval; -} - -/* --- authentication management functions --- */ - -PAM_EXTERN int -pam_sm_authenticate (pam_handle_t *pamh, int flags UNUSED, - int argc, const char **argv) -{ - struct opt_s opts; - - parse_args(pamh, argc, argv, &opts); - - return perform_check(pamh, &opts); -} - -PAM_EXTERN int -pam_sm_setcred (pam_handle_t *pamh UNUSED, int flags UNUSED, - int argc, const char **argv) -{ - struct opt_s opts; - - parse_args(pamh, argc, argv, &opts); - - return opts.retval_when_nofile; -} - -/* --- account management function --- */ - -PAM_EXTERN int -pam_sm_acct_mgmt(pam_handle_t *pamh, int flags UNUSED, - int argc, const char **argv) -{ - struct opt_s opts; - - parse_args(pamh, argc, argv, &opts); - - return perform_check(pamh, &opts); -} - - -#ifdef PAM_STATIC - -/* static module data */ - -struct pam_module _pam_nologin_modstruct = { - "pam_nologin", - pam_sm_authenticate, - pam_sm_setcred, - pam_sm_acct_mgmt, - NULL, - NULL, - NULL, -}; - -#endif /* PAM_STATIC */ - -/* end of module definition */ |