diff options
Diffstat (limited to 'usr.sbin/utxrm/utxrm.c')
-rw-r--r-- | usr.sbin/utxrm/utxrm.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/usr.sbin/utxrm/utxrm.c b/usr.sbin/utxrm/utxrm.c new file mode 100644 index 0000000..3c2eadd --- /dev/null +++ b/usr.sbin/utxrm/utxrm.c @@ -0,0 +1,84 @@ +/*- + * Copyright (c) 2011 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/time.h> +#include <errno.h> +#include <ctype.h> +#include <stdio.h> +#include <string.h> +#include <utmpx.h> + +static int +b16_pton(const char *in, char *out, size_t len) +{ + size_t i; + + for (i = 0; i < len * 2; i++) + if (!isxdigit((unsigned char)in[i])) + return (1); + for (i = 0; i < len; i++) + sscanf(&in[i * 2], "%02hhx", &out[i]); + return (0); +} + +int +main(int argc, char *argv[]) +{ + struct utmpx utx = { .ut_type = DEAD_PROCESS }; + size_t len; + int i, ret = 0; + + if (argc < 2) { + fprintf(stderr, "usage: utxrm identifier ...\n"); + return (1); + } + + gettimeofday(&utx.ut_tv, NULL); + for (i = 1; i < argc; i++) { + len = strlen(argv[i]); + if (len <= sizeof(utx.ut_id)) { + /* Identifier as string. */ + strncpy(utx.ut_id, argv[i], sizeof(utx.ut_id)); + } else if (len != sizeof(utx.ut_id) * 2 || + b16_pton(argv[i], utx.ut_id, sizeof(utx.ut_id)) != 0) { + /* Also not hexadecimal. */ + fprintf(stderr, "%s: Invalid identifier format\n", + argv[i]); + ret = 1; + continue; + } + + /* Zap the entry. */ + if (pututxline(&utx) == NULL) { + perror(argv[i]); + ret = 1; + } + } + return (ret); +} |