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Diffstat (limited to 'usr.bin/logger/logger.c')
| -rw-r--r-- | usr.bin/logger/logger.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/usr.bin/logger/logger.c b/usr.bin/logger/logger.c new file mode 100644 index 0000000..b87aa5d --- /dev/null +++ b/usr.bin/logger/logger.c @@ -0,0 +1,203 @@ +/* $NetBSD: logger.c,v 1.17 2012/04/27 06:30:48 wiz Exp $ */ + +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. 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. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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> +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1983, 1993\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93"; +#endif +__RCSID("$NetBSD: logger.c,v 1.17 2012/04/27 06:30:48 wiz Exp $"); +#endif /* not lint */ + +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <ctype.h> +#include <string.h> +#include <err.h> + +#define SYSLOG_NAMES +#include <syslog.h> + +static int decode(const char *, const CODE *); +static int pencode(char *); +__dead static void usage(void); + +/* + * logger -- read and log utility + * + * Reads from an input and arranges to write the result on the system + * log. + */ +int +main(int argc, char *argv[]) +{ + int ch, logflags, pri; + const char *tag; + const char *sd = "-"; + const char *msgid = "-"; + char buf[1024]; + + tag = NULL; + pri = LOG_NOTICE; + logflags = 0; + while ((ch = getopt(argc, argv, "cd:f:im:np:st:")) != -1) + switch((char)ch) { + case 'c': /* log to console */ + logflags |= LOG_CONS; + break; + case 'd': /* structured data field */ + sd = optarg; + break; + case 'f': /* file to log */ + if (freopen(optarg, "r", stdin) == NULL) + err(EXIT_FAILURE, "%s", optarg); + break; + case 'i': /* log process id also */ + logflags |= LOG_PID; + break; + case 'm': /* msgid field */ + msgid = optarg; + break; + case 'n': /* open log file immediately */ + logflags |= LOG_NDELAY; + break; + case 'p': /* priority */ + pri = pencode(optarg); + break; + case 's': /* log to standard error */ + logflags |= LOG_PERROR; + break; + case 't': /* tag */ + tag = optarg; + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + /* setup for logging */ + openlog(tag != NULL ? tag : getlogin(), logflags, 0); + (void)fclose(stdout); + + /* log input line if appropriate */ + if (argc > 0) { + char *p, *endp; + size_t len; + + for (p = buf, endp = buf + sizeof(buf) - 2; *argv != NULL;) { + len = strlen(*argv); + if (p + len > endp && p > buf) { + syslogp(pri, msgid, sd, "%s", buf); + p = buf; + } + if (len > sizeof(buf) - 1) + syslogp(pri, msgid, sd, "%s", *argv++); + else { + if (p != buf) + *p++ = ' '; + memmove(p, *argv++, len); + *(p += len) = '\0'; + } + } + if (p != buf) + syslogp(pri, msgid, sd, "%s", buf); + } else /* TODO: allow syslog-protocol messages from file/stdin + * but that will require parsing the line to split + * it into three fields. + */ + while (fgets(buf, sizeof(buf), stdin) != NULL) + syslogp(pri, msgid, sd, "%s", buf); + + exit(EXIT_SUCCESS); + /* NOTREACHED */ +} + +/* + * Decode a symbolic name to a numeric value + */ +static int +pencode(char *s) +{ + char *save; + int fac, lev; + + for (save = s; *s != '\0' && *s != '.'; ++s) + ; + if (*s != '\0') { + *s = '\0'; + fac = decode(save, facilitynames); + if (fac < 0) + errx(EXIT_FAILURE, "unknown facility name: %s", save); + *s++ = '.'; + } else { + fac = 0; + s = save; + } + lev = decode(s, prioritynames); + if (lev < 0) + errx(EXIT_FAILURE, "unknown priority name: %s", s); + return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK)); +} + +static int +decode(const char *name, const CODE *codetab) +{ + const CODE *c; + + if (isdigit((unsigned char)*name)) + return (atoi(name)); + + for (c = codetab; c->c_name != NULL; c++) + if (strcasecmp(name, c->c_name) == 0) + return (c->c_val); + + return (-1); +} + +static void +usage(void) +{ + + (void)fprintf(stderr, + "Usage: %s [-cins] [-d SD] [-f file] [-m msgid] " + "[-p pri] [-t tag] [message ...]\n", + getprogname()); + exit(EXIT_FAILURE); +} |