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- /*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2012 The FreeBSD Foundation
- *
- * This software was developed by Edward Tomasz Napierala under sponsorship
- * from the FreeBSD Foundation.
- *
- * 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 <errno.h>
- #include <stdarg.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <syslog.h>
- #include <vis.h>
- #include "libiscsiutil.h"
- static int log_level = 0;
- static char *peer_name = NULL;
- static char *peer_addr = NULL;
- #define MSGBUF_LEN 1024
- void
- log_init(int level)
- {
- log_level = level;
- openlog(getprogname(), LOG_NDELAY | LOG_PID, LOG_DAEMON);
- }
- void
- log_set_peer_name(const char *name)
- {
- /*
- * XXX: Turn it into assertion?
- */
- if (peer_name != NULL)
- log_errx(1, "%s called twice", __func__);
- if (peer_addr == NULL)
- log_errx(1, "%s called before log_set_peer_addr", __func__);
- peer_name = checked_strdup(name);
- }
- void
- log_set_peer_addr(const char *addr)
- {
- /*
- * XXX: Turn it into assertion?
- */
- if (peer_addr != NULL)
- log_errx(1, "%s called twice", __func__);
- peer_addr = checked_strdup(addr);
- }
- static void
- log_common(int priority, int log_errno, const char *fmt, va_list ap)
- {
- static char msgbuf[MSGBUF_LEN];
- static char msgbuf_strvised[MSGBUF_LEN * 4 + 1];
- char *errstr;
- int ret;
- ret = vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
- if (ret < 0) {
- fprintf(stderr, "%s: snprintf failed", getprogname());
- syslog(LOG_CRIT, "snprintf failed");
- exit(1);
- }
- ret = strnvis(msgbuf_strvised, sizeof(msgbuf_strvised), msgbuf, VIS_NL);
- if (ret < 0) {
- fprintf(stderr, "%s: strnvis failed", getprogname());
- syslog(LOG_CRIT, "strnvis failed");
- exit(1);
- }
- if (log_errno == -1) {
- if (peer_name != NULL) {
- fprintf(stderr, "%s: %s (%s): %s\n", getprogname(),
- peer_addr, peer_name, msgbuf_strvised);
- syslog(priority, "%s (%s): %s",
- peer_addr, peer_name, msgbuf_strvised);
- } else if (peer_addr != NULL) {
- fprintf(stderr, "%s: %s: %s\n", getprogname(),
- peer_addr, msgbuf_strvised);
- syslog(priority, "%s: %s",
- peer_addr, msgbuf_strvised);
- } else {
- fprintf(stderr, "%s: %s\n", getprogname(), msgbuf_strvised);
- syslog(priority, "%s", msgbuf_strvised);
- }
- } else {
- errstr = strerror(log_errno);
- if (peer_name != NULL) {
- fprintf(stderr, "%s: %s (%s): %s: %s\n", getprogname(),
- peer_addr, peer_name, msgbuf_strvised, errstr);
- syslog(priority, "%s (%s): %s: %s",
- peer_addr, peer_name, msgbuf_strvised, errstr);
- } else if (peer_addr != NULL) {
- fprintf(stderr, "%s: %s: %s: %s\n", getprogname(),
- peer_addr, msgbuf_strvised, errstr);
- syslog(priority, "%s: %s: %s",
- peer_addr, msgbuf_strvised, errstr);
- } else {
- fprintf(stderr, "%s: %s: %s\n", getprogname(),
- msgbuf_strvised, errstr);
- syslog(priority, "%s: %s",
- msgbuf_strvised, errstr);
- }
- }
- }
- void
- log_err(int eval, const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- log_common(LOG_CRIT, errno, fmt, ap);
- va_end(ap);
- exit(eval);
- }
- void
- log_errx(int eval, const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- log_common(LOG_CRIT, -1, fmt, ap);
- va_end(ap);
- exit(eval);
- }
- void
- log_warn(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- log_common(LOG_WARNING, errno, fmt, ap);
- va_end(ap);
- }
- void
- log_warnx(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- log_common(LOG_WARNING, -1, fmt, ap);
- va_end(ap);
- }
- void
- log_debugx(const char *fmt, ...)
- {
- va_list ap;
- if (log_level == 0)
- return;
- va_start(ap, fmt);
- log_common(LOG_DEBUG, -1, fmt, ap);
- va_end(ap);
- }
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