summaryrefslogtreecommitdiffstats
path: root/usr.bin/logger/logger.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/logger/logger.c')
-rw-r--r--usr.bin/logger/logger.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/usr.bin/logger/logger.c b/usr.bin/logger/logger.c
new file mode 100644
index 0000000..d3c4786
--- /dev/null
+++ b/usr.bin/logger/logger.c
@@ -0,0 +1,296 @@
+/*
+ * 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.
+ * 4. 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.
+ */
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1983, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+#endif
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define SYSLOG_NAMES
+#include <syslog.h>
+
+static int decode(char *, CODE *);
+static int pencode(char *);
+static void logmessage(int, const char *, const char *, const char *,
+ const char *);
+static void usage(void);
+
+struct socks {
+ int sock;
+ int addrlen;
+ struct sockaddr_storage addr;
+};
+
+#ifdef INET6
+static int family = PF_UNSPEC; /* protocol family (IPv4, IPv6 or both) */
+#else
+static int family = PF_INET; /* protocol family (IPv4 only) */
+#endif
+static int send_to_all = 0; /* send message to all IPv4/IPv6 addresses */
+
+/*
+ * 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;
+ char *tag, *host, buf[1024];
+ const char *svcname;
+
+ tag = NULL;
+ host = NULL;
+ svcname = "syslog";
+ pri = LOG_USER | LOG_NOTICE;
+ logflags = 0;
+ unsetenv("TZ");
+ while ((ch = getopt(argc, argv, "46Af:h:iP:p:st:")) != -1)
+ switch((char)ch) {
+ case '4':
+ family = PF_INET;
+ break;
+#ifdef INET6
+ case '6':
+ family = PF_INET6;
+ break;
+#endif
+ case 'A':
+ send_to_all++;
+ break;
+ case 'f': /* file to log */
+ if (freopen(optarg, "r", stdin) == NULL)
+ err(1, "%s", optarg);
+ setvbuf(stdin, 0, _IONBF, 0);
+ break;
+ case 'h': /* hostname to deliver to */
+ host = optarg;
+ break;
+ case 'i': /* log process id also */
+ logflags |= LOG_PID;
+ break;
+ case 'P': /* service name or port number */
+ svcname = optarg;
+ 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;
+
+ if (tag == NULL)
+ tag = getlogin();
+ /* setup for logging */
+ if (host == NULL)
+ openlog(tag, 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;) {
+ len = strlen(*argv);
+ if (p + len > endp && p > buf) {
+ logmessage(pri, tag, host, svcname, buf);
+ p = buf;
+ }
+ if (len > sizeof(buf) - 1)
+ logmessage(pri, tag, host, svcname, *argv++);
+ else {
+ if (p != buf)
+ *p++ = ' ';
+ bcopy(*argv++, p, len);
+ *(p += len) = '\0';
+ }
+ }
+ if (p != buf)
+ logmessage(pri, tag, host, svcname, buf);
+ } else
+ while (fgets(buf, sizeof(buf), stdin) != NULL)
+ logmessage(pri, tag, host, svcname, buf);
+ exit(0);
+}
+
+/*
+ * Send the message to syslog, either on the local host, or on a remote host
+ */
+static void
+logmessage(int pri, const char *tag, const char *host, const char *svcname,
+ const char *buf)
+{
+ static struct socks *socks;
+ static int nsock = 0;
+ struct addrinfo hints, *res, *r;
+ char *line;
+ int maxs, len, sock, error, i, lsent;
+
+ if (host == NULL) {
+ syslog(pri, "%s", buf);
+ return;
+ }
+
+ if (nsock <= 0) { /* set up socket stuff */
+ /* resolve hostname */
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = family;
+ hints.ai_socktype = SOCK_DGRAM;
+ error = getaddrinfo(host, svcname, &hints, &res);
+ if (error == EAI_SERVICE) {
+ warnx("%s/udp: unknown service", svcname);
+ error = getaddrinfo(host, "514", &hints, &res);
+ }
+ if (error)
+ errx(1, "%s: %s", gai_strerror(error), host);
+ /* count max number of sockets we may open */
+ for (maxs = 0, r = res; r; r = r->ai_next, maxs++);
+ socks = malloc(maxs * sizeof(struct socks));
+ if (!socks)
+ errx(1, "couldn't allocate memory for sockets");
+ for (r = res; r; r = r->ai_next) {
+ sock = socket(r->ai_family, r->ai_socktype,
+ r->ai_protocol);
+ if (sock < 0)
+ continue;
+ memcpy(&socks[nsock].addr, r->ai_addr, r->ai_addrlen);
+ socks[nsock].addrlen = r->ai_addrlen;
+ socks[nsock++].sock = sock;
+ }
+ freeaddrinfo(res);
+ if (nsock <= 0)
+ errx(1, "socket");
+ }
+
+ if ((len = asprintf(&line, "<%d>%s: %s", pri, tag, buf)) == -1)
+ errx(1, "asprintf");
+
+ lsent = -1;
+ for (i = 0; i < nsock; ++i) {
+ lsent = sendto(socks[i].sock, line, len, 0,
+ (struct sockaddr *)&socks[i].addr,
+ socks[i].addrlen);
+ if (lsent == len && !send_to_all)
+ break;
+ }
+ if (lsent != len) {
+ if (lsent == -1)
+ warn ("sendto");
+ else
+ warnx ("sendto: short send - %d bytes", lsent);
+ }
+
+ free(line);
+}
+
+/*
+ * Decode a symbolic name to a numeric value
+ */
+static int
+pencode(char *s)
+{
+ char *save;
+ int fac, lev;
+
+ for (save = s; *s && *s != '.'; ++s);
+ if (*s) {
+ *s = '\0';
+ fac = decode(save, facilitynames);
+ if (fac < 0)
+ errx(1, "unknown facility name: %s", save);
+ *s++ = '.';
+ }
+ else {
+ fac = 0;
+ s = save;
+ }
+ lev = decode(s, prioritynames);
+ if (lev < 0)
+ errx(1, "unknown priority name: %s", save);
+ return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
+}
+
+static int
+decode(char *name, CODE *codetab)
+{
+ CODE *c;
+
+ if (isdigit(*name))
+ return (atoi(name));
+
+ for (c = codetab; c->c_name; c++)
+ if (!strcasecmp(name, c->c_name))
+ return (c->c_val);
+
+ return (-1);
+}
+
+static void
+usage(void)
+{
+ (void)fprintf(stderr, "usage: %s\n",
+ "logger [-46Ais] [-f file] [-h host] [-P port] [-p pri] [-t tag]\n"
+ " [message ...]"
+ );
+ exit(1);
+}
OpenPOWER on IntegriCloud