errx() prefixes the error string with argv[0] so including "login: " in the string is redundant. Also remove a superfluous newline. Sponsored by: The FreeBSD Foundation
205 lines
5.8 KiB
C
205 lines
5.8 KiB
C
/*
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* Copyright (c) 2005 Apple Computer, Inc.
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* All rights reserved.
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*
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* @APPLE_BSD_LICENSE_HEADER_START@
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @APPLE_BSD_LICENSE_HEADER_END@
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <bsm/libbsm.h>
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#include <bsm/audit_uevents.h>
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#include <err.h>
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#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <strings.h>
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#include <unistd.h>
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#include "login.h"
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/*
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* Audit data
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*/
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static au_tid_t tid;
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/*
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* The following tokens are included in the audit record for a successful
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* login: header, subject, return.
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*/
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void
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au_login_success(void)
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{
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token_t *tok;
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int aufd;
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au_mask_t aumask;
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auditinfo_t auinfo;
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uid_t uid = pwd->pw_uid;
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gid_t gid = pwd->pw_gid;
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pid_t pid = getpid();
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int au_cond;
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/* If we are not auditing, don't cut an audit record; just return. */
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if (auditon(A_GETCOND, &au_cond, sizeof(au_cond)) < 0) {
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if (errno == ENOSYS)
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return;
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errx(1, "Could not determine audit condition");
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}
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if (au_cond == AUC_NOAUDIT)
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return;
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/* Compute and set the user's preselection mask. */
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if (au_user_mask(pwd->pw_name, &aumask) == -1)
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errx(1, "Could not set audit mask");
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/* Set the audit info for the user. */
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auinfo.ai_auid = uid;
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auinfo.ai_asid = pid;
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bcopy(&tid, &auinfo.ai_termid, sizeof(auinfo.ai_termid));
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bcopy(&aumask, &auinfo.ai_mask, sizeof(auinfo.ai_mask));
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if (setaudit(&auinfo) != 0)
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err(1, "setaudit failed");
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if ((aufd = au_open()) == -1)
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errx(1, "Audit Error: au_open() failed");
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if ((tok = au_to_subject32(uid, geteuid(), getegid(), uid, gid, pid,
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pid, &tid)) == NULL)
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errx(1, "Audit Error: au_to_subject32() failed");
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au_write(aufd, tok);
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if ((tok = au_to_return32(0, 0)) == NULL)
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errx(1, "Audit Error: au_to_return32() failed");
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au_write(aufd, tok);
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if (au_close(aufd, 1, AUE_login) == -1)
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errx(1, "Audit Record was not committed.");
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}
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/*
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* The following tokens are included in the audit record for failed
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* login attempts: header, subject, text, return.
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*/
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void
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au_login_fail(const char *errmsg, int na)
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{
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token_t *tok;
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int aufd;
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int au_cond;
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uid_t uid;
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gid_t gid;
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pid_t pid = getpid();
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/* If we are not auditing, don't cut an audit record; just return. */
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if (auditon(A_GETCOND, &au_cond, sizeof(au_cond)) < 0) {
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if (errno == ENOSYS)
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return;
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errx(1, "Could not determine audit condition");
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}
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if (au_cond == AUC_NOAUDIT)
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return;
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if ((aufd = au_open()) == -1)
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errx(1, "Audit Error: au_open() failed");
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if (na) {
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/*
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* Non attributable event. Assuming that login is not called
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* within a user's session => auid,asid == -1.
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*/
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if ((tok = au_to_subject32(-1, geteuid(), getegid(), -1, -1,
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pid, -1, &tid)) == NULL)
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errx(1, "Audit Error: au_to_subject32() failed");
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} else {
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/* We know the subject -- so use its value instead. */
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uid = pwd->pw_uid;
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gid = pwd->pw_gid;
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if ((tok = au_to_subject32(uid, geteuid(), getegid(), uid,
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gid, pid, pid, &tid)) == NULL)
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errx(1, "Audit Error: au_to_subject32() failed");
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}
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au_write(aufd, tok);
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/* Include the error message. */
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if ((tok = au_to_text(errmsg)) == NULL)
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errx(1, "Audit Error: au_to_text() failed");
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au_write(aufd, tok);
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if ((tok = au_to_return32(1, errno)) == NULL)
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errx(1, "Audit Error: au_to_return32() failed");
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au_write(aufd, tok);
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if (au_close(aufd, 1, AUE_login) == -1)
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errx(1, "Audit Error: au_close() was not committed");
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}
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/*
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* The following tokens are included in the audit record for a logout:
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* header, subject, return.
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*/
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void
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audit_logout(void)
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{
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token_t *tok;
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int aufd;
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uid_t uid = pwd->pw_uid;
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gid_t gid = pwd->pw_gid;
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pid_t pid = getpid();
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int au_cond;
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/* If we are not auditing, don't cut an audit record; just return. */
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if (auditon(A_GETCOND, &au_cond, sizeof(int)) < 0) {
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if (errno == ENOSYS)
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return;
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errx(1, "Could not determine audit condition");
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}
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if (au_cond == AUC_NOAUDIT)
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return;
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if ((aufd = au_open()) == -1)
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errx(1, "Audit Error: au_open() failed");
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/* The subject that is created (euid, egid of the current process). */
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if ((tok = au_to_subject32(uid, geteuid(), getegid(), uid, gid, pid,
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pid, &tid)) == NULL)
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errx(1, "Audit Error: au_to_subject32() failed");
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au_write(aufd, tok);
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if ((tok = au_to_return32(0, 0)) == NULL)
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errx(1, "Audit Error: au_to_return32() failed");
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au_write(aufd, tok);
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if (au_close(aufd, 1, AUE_logout) == -1)
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errx(1, "Audit Record was not committed.");
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}
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