134 lines
3.1 KiB
C
134 lines
3.1 KiB
C
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/* pam_warn module */
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/*
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* $Id: pam_warn.c,v 1.1.1.1 2000/06/20 22:12:10 agmorgan Exp $
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* $FreeBSD$
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*
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* Written by Andrew Morgan <morgan@linux.kernel.org> 1996/3/11
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*/
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#define _BSD_SOURCE
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#include <stdio.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <stdarg.h>
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/*
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* here, we make a definition for the externally accessible function
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* in this file (this definition is required for static a module
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* but strongly encouraged generally) it is used to instruct the
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* modules include file to define the function prototypes.
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*/
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#define PAM_SM_AUTH
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#define PAM_SM_PASSWORD
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#include <security/pam_modules.h>
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/* some syslogging */
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static void _pam_log(int err, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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openlog("PAM-warn", LOG_CONS|LOG_PID, LOG_AUTH);
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vsyslog(err, format, args);
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va_end(args);
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closelog();
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}
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/* --- authentication management functions (only) --- */
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PAM_EXTERN
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int pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc
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, const char **argv)
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{
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const char *service=NULL, *user=NULL, *terminal=NULL
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, *rhost=NULL, *ruser=NULL;
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(void) pam_get_item(pamh, PAM_SERVICE, (const void **)&service);
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(void) pam_get_item(pamh, PAM_TTY, (const void **)&terminal);
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_pam_log(LOG_NOTICE, "service: %s [on terminal: %s]"
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, service ? service : "<unknown>"
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, terminal ? terminal : "<unknown>"
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);
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(void) pam_get_user(pamh, &user, "Who are you? ");
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(void) pam_get_item(pamh, PAM_RUSER, (const void **)&ruser);
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(void) pam_get_item(pamh, PAM_RHOST, (const void **)&rhost);
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_pam_log(LOG_NOTICE, "user: (uid=%d) -> %s [remote: %s@%s]"
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, getuid()
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, user ? user : "<unknown>"
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, ruser ? ruser : "?nobody"
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, rhost ? rhost : "?nowhere"
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);
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/* we are just a fly on the wall */
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return PAM_IGNORE;
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}
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PAM_EXTERN
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int pam_sm_setcred(pam_handle_t *pamh,int flags,int argc
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, const char **argv)
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{
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return PAM_IGNORE;
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}
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/* password updating functions */
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PAM_EXTERN
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int pam_sm_chauthtok(pam_handle_t *pamh,int flags,int argc
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, const char **argv)
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{
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/* map to the authentication function... */
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return pam_sm_authenticate(pamh, flags, argc, argv);
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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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/* map to the authentication function... */
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return pam_sm_authenticate(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, int argc,
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const char **argv)
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{
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/* map to the authentication function... */
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return pam_sm_authenticate(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, int argc,
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const char **argv)
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{
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/* map to the authentication function... */
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return pam_sm_authenticate(pamh, flags, argc, argv);
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}
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#ifdef PAM_STATIC
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/* static module data */
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struct pam_module _pam_warn_modstruct = {
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"pam_warn",
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pam_sm_authenticate,
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pam_sm_setcred,
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pam_sm_acct_mgmt,
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pam_sm_open_session,
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pam_sm_close_session,
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pam_sm_chauthtok,
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};
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#endif
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/* end of module definition */
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