diff options
Diffstat (limited to 'crypto/openssh/audit-bsm.c')
| -rw-r--r-- | crypto/openssh/audit-bsm.c | 337 |
1 files changed, 0 insertions, 337 deletions
diff --git a/crypto/openssh/audit-bsm.c b/crypto/openssh/audit-bsm.c deleted file mode 100644 index c26b4ca..0000000 --- a/crypto/openssh/audit-bsm.c +++ /dev/null @@ -1,337 +0,0 @@ -/* $Id: audit-bsm.c,v 1.5 2006/09/30 22:09:50 dtucker Exp $ */ - -/* - * TODO - * - * - deal with overlap between this and sys_auth_allowed_user - * sys_auth_record_login and record_failed_login. - */ - -/* - * Copyright 1988-2002 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - * - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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. - * - */ -/* #pragma ident "@(#)bsmaudit.c 1.1 01/09/17 SMI" */ - -#include "includes.h" -#if defined(USE_BSM_AUDIT) - -#include <sys/types.h> - -#include <errno.h> -#include <stdarg.h> -#include <unistd.h> - -#include "ssh.h" -#include "log.h" -#include "key.h" -#include "hostfile.h" -#include "auth.h" -#include "xmalloc.h" - -#ifndef AUE_openssh -# define AUE_openssh 32800 -#endif -#include <bsm/audit.h> -#include <bsm/libbsm.h> -#include <bsm/audit_uevents.h> -#include <bsm/audit_record.h> -#include <locale.h> - -#if defined(HAVE_GETAUDIT_ADDR) -#define AuditInfoStruct auditinfo_addr -#define AuditInfoTermID au_tid_addr_t -#define GetAuditFunc(a,b) getaudit_addr((a),(b)) -#define GetAuditFuncText "getaudit_addr" -#define SetAuditFunc(a,b) setaudit_addr((a),(b)) -#define SetAuditFuncText "setaudit_addr" -#define AUToSubjectFunc au_to_subject_ex -#define AUToReturnFunc(a,b) au_to_return32((a), (int32_t)(b)) -#else -#define AuditInfoStruct auditinfo -#define AuditInfoTermID au_tid_t -#define GetAuditFunc(a,b) getaudit(a) -#define GetAuditFuncText "getaudit" -#define SetAuditFunc(a,b) setaudit(a) -#define SetAuditFuncText "setaudit" -#define AUToSubjectFunc au_to_subject -#define AUToReturnFunc(a,b) au_to_return((a), (u_int)(b)) -#endif - -extern int cannot_audit(int); -extern void aug_init(void); -extern dev_t aug_get_port(void); -extern int aug_get_machine(char *, u_int32_t *, u_int32_t *); -extern void aug_save_auid(au_id_t); -extern void aug_save_uid(uid_t); -extern void aug_save_euid(uid_t); -extern void aug_save_gid(gid_t); -extern void aug_save_egid(gid_t); -extern void aug_save_pid(pid_t); -extern void aug_save_asid(au_asid_t); -extern void aug_save_tid(dev_t, unsigned int); -extern void aug_save_tid_ex(dev_t, u_int32_t *, u_int32_t); -extern int aug_save_me(void); -extern int aug_save_namask(void); -extern void aug_save_event(au_event_t); -extern void aug_save_sorf(int); -extern void aug_save_text(char *); -extern void aug_save_text1(char *); -extern void aug_save_text2(char *); -extern void aug_save_na(int); -extern void aug_save_user(char *); -extern void aug_save_path(char *); -extern int aug_save_policy(void); -extern void aug_save_afunc(int (*)(int)); -extern int aug_audit(void); -extern int aug_na_selected(void); -extern int aug_selected(void); -extern int aug_daemon_session(void); - -#ifndef HAVE_GETTEXT -# define gettext(a) (a) -#endif - -extern Authctxt *the_authctxt; -static AuditInfoTermID ssh_bsm_tid; - -/* Below is the low-level BSM interface code */ - -/* - * Check if the specified event is selected (enabled) for auditing. - * Returns 1 if the event is selected, 0 if not and -1 on failure. - */ -static int -selected(char *username, uid_t uid, au_event_t event, int sf) -{ - int rc, sorf; - char naflags[512]; - struct au_mask mask; - - mask.am_success = mask.am_failure = 0; - if (uid < 0) { - /* get flags for non-attributable (to a real user) events */ - rc = getacna(naflags, sizeof(naflags)); - if (rc == 0) - (void) getauditflagsbin(naflags, &mask); - } else - rc = au_user_mask(username, &mask); - - sorf = (sf == 0) ? AU_PRS_SUCCESS : AU_PRS_FAILURE; - return(au_preselect(event, &mask, sorf, AU_PRS_REREAD)); -} - -static void -bsm_audit_record(int typ, char *string, au_event_t event_no) -{ - int ad, rc, sel; - uid_t uid = -1; - gid_t gid = -1; - pid_t pid = getpid(); - AuditInfoTermID tid = ssh_bsm_tid; - - if (the_authctxt != NULL && the_authctxt->valid) { - uid = the_authctxt->pw->pw_uid; - gid = the_authctxt->pw->pw_gid; - } - - rc = (typ == 0) ? 0 : -1; - sel = selected(the_authctxt->user, uid, event_no, rc); - debug3("BSM audit: typ %d rc %d \"%s\"", typ, rc, string); - if (!sel) - return; /* audit event does not match mask, do not write */ - - debug3("BSM audit: writing audit new record"); - ad = au_open(); - - (void) au_write(ad, AUToSubjectFunc(uid, uid, gid, uid, gid, - pid, pid, &tid)); - (void) au_write(ad, au_to_text(string)); - (void) au_write(ad, AUToReturnFunc(typ, rc)); - - rc = au_close(ad, AU_TO_WRITE, event_no); - if (rc < 0) - error("BSM audit: %s failed to write \"%s\" record: %s", - __func__, string, strerror(errno)); -} - -static void -bsm_audit_session_setup(void) -{ - int rc; - struct AuditInfoStruct info; - au_mask_t mask; - - if (the_authctxt == NULL) { - error("BSM audit: session setup internal error (NULL ctxt)"); - return; - } - - if (the_authctxt->valid) - info.ai_auid = the_authctxt->pw->pw_uid; - else - info.ai_auid = -1; - info.ai_asid = getpid(); - mask.am_success = 0; - mask.am_failure = 0; - - (void) au_user_mask(the_authctxt->user, &mask); - - info.ai_mask.am_success = mask.am_success; - info.ai_mask.am_failure = mask.am_failure; - - info.ai_termid = ssh_bsm_tid; - - rc = SetAuditFunc(&info, sizeof(info)); - if (rc < 0) - error("BSM audit: %s: %s failed: %s", __func__, - SetAuditFuncText, strerror(errno)); -} - -static void -bsm_audit_bad_login(const char *what) -{ - char textbuf[BSM_TEXTBUFSZ]; - - if (the_authctxt->valid) { - (void) snprintf(textbuf, sizeof (textbuf), - gettext("invalid %s for user %s"), - what, the_authctxt->user); - bsm_audit_record(4, textbuf, AUE_openssh); - } else { - (void) snprintf(textbuf, sizeof (textbuf), - gettext("invalid user name \"%s\""), - the_authctxt->user); - bsm_audit_record(3, textbuf, AUE_openssh); - } -} - -/* Below is the sshd audit API code */ - -void -audit_connection_from(const char *host, int port) -{ - AuditInfoTermID *tid = &ssh_bsm_tid; - char buf[1024]; - - if (cannot_audit(0)) - return; - debug3("BSM audit: connection from %.100s port %d", host, port); - - /* populate our terminal id structure */ -#if defined(HAVE_GETAUDIT_ADDR) - tid->at_port = (dev_t)port; - aug_get_machine((char *)host, &(tid->at_addr[0]), &(tid->at_type)); - snprintf(buf, sizeof(buf), "%08x %08x %08x %08x", tid->at_addr[0], - tid->at_addr[1], tid->at_addr[2], tid->at_addr[3]); - debug3("BSM audit: iptype %d machine ID %s", (int)tid->at_type, buf); -#else - /* this is used on IPv4-only machines */ - tid->port = (dev_t)port; - tid->machine = inet_addr(host); - snprintf(buf, sizeof(buf), "%08x", tid->machine); - debug3("BSM audit: machine ID %s", buf); -#endif -} - -void -audit_run_command(const char *command) -{ - /* not implemented */ -} - -void -audit_session_open(const char *ttyn) -{ - /* not implemented */ -} - -void -audit_session_close(const char *ttyn) -{ - /* not implemented */ -} - -void -audit_event(ssh_audit_event_t event) -{ - char textbuf[BSM_TEXTBUFSZ]; - static int logged_in = 0; - const char *user = the_authctxt ? the_authctxt->user : "(unknown user)"; - - if (cannot_audit(0)) - return; - - switch(event) { - case SSH_AUTH_SUCCESS: - logged_in = 1; - bsm_audit_session_setup(); - snprintf(textbuf, sizeof(textbuf), - gettext("successful login %s"), user); - bsm_audit_record(0, textbuf, AUE_openssh); - break; - - case SSH_CONNECTION_CLOSE: - /* - * We can also get a close event if the user attempted auth - * but never succeeded. - */ - if (logged_in) { - snprintf(textbuf, sizeof(textbuf), - gettext("sshd logout %s"), the_authctxt->user); - bsm_audit_record(0, textbuf, AUE_logout); - } else { - debug("%s: connection closed without authentication", - __func__); - } - break; - - case SSH_NOLOGIN: - bsm_audit_record(1, - gettext("logins disabled by /etc/nologin"), AUE_openssh); - break; - - case SSH_LOGIN_EXCEED_MAXTRIES: - snprintf(textbuf, sizeof(textbuf), - gettext("too many tries for user %s"), the_authctxt->user); - bsm_audit_record(1, textbuf, AUE_openssh); - break; - - case SSH_LOGIN_ROOT_DENIED: - bsm_audit_record(2, gettext("not_console"), AUE_openssh); - break; - - case SSH_AUTH_FAIL_PASSWD: - bsm_audit_bad_login("password"); - break; - - case SSH_AUTH_FAIL_KBDINT: - bsm_audit_bad_login("interactive password entry"); - break; - - default: - debug("%s: unhandled event %d", __func__, event); - } -} -#endif /* BSM */ |
