diff options
Diffstat (limited to 'usr.bin/wtmpcvt/wtmpcvt.c')
| -rw-r--r-- | usr.bin/wtmpcvt/wtmpcvt.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/usr.bin/wtmpcvt/wtmpcvt.c b/usr.bin/wtmpcvt/wtmpcvt.c new file mode 100644 index 0000000..aa4e25e --- /dev/null +++ b/usr.bin/wtmpcvt/wtmpcvt.c @@ -0,0 +1,138 @@ +/*- + * Copyright (c) 2010 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/endian.h> +#include <sys/param.h> + +#include <err.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <utmpx.h> + +#include "../../lib/libc/gen/utxdb.h" + +struct outmp { + char ut_line[8]; + char ut_user[16]; + char ut_host[16]; + int32_t ut_time; +}; + +static void +usage(void) +{ + + fprintf(stderr, "usage: wtmpcvt input output\n"); + exit(1); +} + +static void +outmp_to_futx(const struct outmp *ui, struct futx *uo) +{ + + memset(uo, 0, sizeof *uo); +#define COPY_STRING(field) do { \ + strncpy(uo->fu_ ## field, ui->ut_ ## field, \ + MIN(sizeof uo->fu_ ## field, sizeof ui->ut_ ## field)); \ +} while (0) +#define COPY_LINE_TO_ID() do { \ + strncpy(uo->fu_id, ui->ut_line, \ + MIN(sizeof uo->fu_id, sizeof ui->ut_line)); \ +} while (0) +#define MATCH(field, value) (strncmp(ui->ut_ ## field, (value), \ + sizeof(ui->ut_ ## field)) == 0) + if (MATCH(user, "reboot") && MATCH(line, "~")) + uo->fu_type = BOOT_TIME; + else if (MATCH(user, "date") && MATCH(line, "|")) + uo->fu_type = OLD_TIME; + else if (MATCH(user, "date") && MATCH(line, "{")) + uo->fu_type = NEW_TIME; + else if (MATCH(user, "shutdown") && MATCH(line, "~")) + uo->fu_type = SHUTDOWN_TIME; + else if (MATCH(user, "") && MATCH(host, "") && !MATCH(line, "")) { + uo->fu_type = DEAD_PROCESS; + COPY_LINE_TO_ID(); + } else if (!MATCH(user, "") && !MATCH(line, "") && ui->ut_time != 0) { + uo->fu_type = USER_PROCESS; + COPY_STRING(user); + COPY_STRING(line); + COPY_STRING(host); + COPY_LINE_TO_ID(); + } else { + uo->fu_type = EMPTY; + return; + } +#undef COPY_STRING +#undef COPY_LINE_TO_ID +#undef MATCH + + /* Timestamp conversion. XXX: Assumes host byte order! */ + uo->fu_tv = htobe64((uint64_t)ui->ut_time * 1000000); +} + +int +main(int argc, char *argv[]) +{ + FILE *in, *out; + struct outmp ui; + struct futx uo; + size_t l; + uint16_t lo; + + if (argc != 3) + usage(); + + /* Open files. */ + in = fopen(argv[1], "r"); + if (in == NULL) + err(1, argv[1]); + out = fopen(argv[2], "w"); + if (out == NULL) + err(1, argv[2]); + + /* Process entries. */ + while (fread(&ui, sizeof ui, 1, in) == 1) { + outmp_to_futx(&ui, &uo); + if (uo.fu_type == EMPTY) + continue; + + /* Write new entry to output file. */ + for (l = sizeof uo; l > 0 && + ((const char *)&uo)[l - 1] == '\0'; l--); + lo = htobe16(l); + fwrite(&lo, sizeof lo, 1, out); + fwrite(&uo, l, 1, out); + } + + fclose(in); + fclose(out); + return (0); +} |
