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139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/*-
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* Copyright (c) 2010 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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__FBSDID("$FreeBSD$");
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#include <sys/endian.h>
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#include <sys/param.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <utmpx.h>
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#include "../../lib/libc/gen/utxdb.h"
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struct outmp {
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char ut_line[8];
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char ut_user[16];
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char ut_host[16];
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int32_t ut_time;
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};
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static void
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usage(void)
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{
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fprintf(stderr, "usage: wtmpcvt input output\n");
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exit(1);
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}
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static void
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outmp_to_futx(const struct outmp *ui, struct futx *uo)
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{
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memset(uo, 0, sizeof *uo);
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#define COPY_STRING(field) do { \
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strncpy(uo->fu_ ## field, ui->ut_ ## field, \
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MIN(sizeof uo->fu_ ## field, sizeof ui->ut_ ## field)); \
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} while (0)
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#define COPY_LINE_TO_ID() do { \
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strncpy(uo->fu_id, ui->ut_line, \
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MIN(sizeof uo->fu_id, sizeof ui->ut_line)); \
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} while (0)
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#define MATCH(field, value) (strncmp(ui->ut_ ## field, (value), \
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sizeof(ui->ut_ ## field)) == 0)
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if (MATCH(user, "reboot") && MATCH(line, "~"))
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uo->fu_type = BOOT_TIME;
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else if (MATCH(user, "date") && MATCH(line, "|"))
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uo->fu_type = OLD_TIME;
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else if (MATCH(user, "date") && MATCH(line, "{"))
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uo->fu_type = NEW_TIME;
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else if (MATCH(user, "shutdown") && MATCH(line, "~"))
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uo->fu_type = SHUTDOWN_TIME;
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else if (MATCH(user, "") && MATCH(host, "") && !MATCH(line, "")) {
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uo->fu_type = DEAD_PROCESS;
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COPY_LINE_TO_ID();
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} else if (!MATCH(user, "") && !MATCH(line, "") && ui->ut_time != 0) {
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uo->fu_type = USER_PROCESS;
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COPY_STRING(user);
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COPY_STRING(line);
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COPY_STRING(host);
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COPY_LINE_TO_ID();
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} else {
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uo->fu_type = EMPTY;
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return;
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}
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#undef COPY_STRING
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#undef COPY_LINE_TO_ID
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#undef MATCH
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/* Timestamp conversion. XXX: Assumes host byte order! */
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uo->fu_tv = htobe64((uint64_t)ui->ut_time * 1000000);
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}
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int
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main(int argc, char *argv[])
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{
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FILE *in, *out;
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struct outmp ui;
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struct futx uo;
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size_t l;
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uint16_t lo;
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if (argc != 3)
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usage();
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/* Open files. */
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in = fopen(argv[1], "r");
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if (in == NULL)
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err(1, "%s", argv[1]);
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out = fopen(argv[2], "w");
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if (out == NULL)
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err(1, "%s", argv[2]);
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/* Process entries. */
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while (fread(&ui, sizeof ui, 1, in) == 1) {
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outmp_to_futx(&ui, &uo);
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if (uo.fu_type == EMPTY)
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continue;
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/* Write new entry to output file. */
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for (l = sizeof uo; l > 0 &&
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((const char *)&uo)[l - 1] == '\0'; l--);
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lo = htobe16(l);
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fwrite(&lo, sizeof lo, 1, out);
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fwrite(&uo, l, 1, out);
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}
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fclose(in);
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fclose(out);
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return (0);
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}
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