85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <paths.h>
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#include <sha.h>
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#include <string.h>
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#include <unistd.h>
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#include <utmpx.h>
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#include "ulog.h"
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static void
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ulog_fill(struct utmpx *utx, const char *line)
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{
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SHA_CTX c;
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char id[SHA_DIGEST_LENGTH];
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/* Remove /dev/ component. */
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if (strncmp(line, _PATH_DEV, sizeof _PATH_DEV - 1) == 0)
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line += sizeof _PATH_DEV - 1;
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memset(utx, 0, sizeof *utx);
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utx->ut_pid = getpid();
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gettimeofday(&utx->ut_tv, NULL);
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strncpy(utx->ut_line, line, sizeof utx->ut_line);
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SHA1_Init(&c);
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SHA1_Update(&c, "libulog", 7);
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SHA1_Update(&c, utx->ut_line, sizeof utx->ut_line);
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SHA1_Final(id, &c);
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memcpy(utx->ut_id, id, MIN(sizeof utx->ut_id, sizeof id));
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}
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void
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ulog_login(const char *line, const char *user, const char *host)
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{
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struct utmpx utx;
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ulog_fill(&utx, line);
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utx.ut_type = USER_PROCESS;
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strncpy(utx.ut_user, user, sizeof utx.ut_user);
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if (host != NULL)
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strncpy(utx.ut_host, host, sizeof utx.ut_host);
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pututxline(&utx);
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}
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void
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ulog_logout(const char *line)
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{
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struct utmpx utx;
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ulog_fill(&utx, line);
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utx.ut_type = DEAD_PROCESS;
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pututxline(&utx);
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}
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