freebsd-dev/lib/libulog/ulog_login.c
Ed Schouten 08f9924ec6 Properly use SHA1_Final() instead of SHA_Final().
In this case it doesn't really matter, as long as we turn a TTY name
into a set of shuffled bytes. Still, for correctness we should use the
proper function.

MFC after:	2 weeks
2012-04-19 15:28:15 +00:00

85 lines
2.5 KiB
C

/*-
* Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
* All rights reserved.
*
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/time.h>
#include <paths.h>
#include <sha.h>
#include <string.h>
#include <unistd.h>
#include <utmpx.h>
#include "ulog.h"
static void
ulog_fill(struct utmpx *utx, const char *line)
{
SHA_CTX c;
char id[SHA_DIGEST_LENGTH];
/* Remove /dev/ component. */
if (strncmp(line, _PATH_DEV, sizeof _PATH_DEV - 1) == 0)
line += sizeof _PATH_DEV - 1;
memset(utx, 0, sizeof *utx);
utx->ut_pid = getpid();
gettimeofday(&utx->ut_tv, NULL);
strncpy(utx->ut_line, line, sizeof utx->ut_line);
SHA1_Init(&c);
SHA1_Update(&c, "libulog", 7);
SHA1_Update(&c, utx->ut_line, sizeof utx->ut_line);
SHA1_Final(id, &c);
memcpy(utx->ut_id, id, MIN(sizeof utx->ut_id, sizeof id));
}
void
ulog_login(const char *line, const char *user, const char *host)
{
struct utmpx utx;
ulog_fill(&utx, line);
utx.ut_type = USER_PROCESS;
strncpy(utx.ut_user, user, sizeof utx.ut_user);
if (host != NULL)
strncpy(utx.ut_host, host, sizeof utx.ut_host);
pututxline(&utx);
}
void
ulog_logout(const char *line)
{
struct utmpx utx;
ulog_fill(&utx, line);
utx.ut_type = DEAD_PROCESS;
pututxline(&utx);
}