diff options
Diffstat (limited to 'usr.sbin/route6d/log.c')
-rw-r--r-- | usr.sbin/route6d/log.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/usr.sbin/route6d/log.c b/usr.sbin/route6d/log.c new file mode 100644 index 00000000000..8af492c6993 --- /dev/null +++ b/usr.sbin/route6d/log.c @@ -0,0 +1,184 @@ +/* + * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <err.h> +#include <errno.h> +#include <netdb.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <time.h> +#include <unistd.h> + +#include "log.h" + +static int debug; + +static char *logqueue; + +#define LOGQUEUE_SIZE 1024 + +void logit(int, const char *, ...); +void vlog(int pri, const char *fmt, va_list ap); + +void +log_init(int n_debug) +{ + extern char *__progname; + + if (logqueue == NULL) { + logqueue = calloc(LOGQUEUE_SIZE, 1); + if (logqueue == NULL) + err(1, NULL); + } + + debug = n_debug; + + if (!debug) + openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON); + + tzset(); +} + +void +logit(int pri, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vlog(pri, fmt, ap); + va_end(ap); +} + +void +log_enqueue(const char *fmt, ...) +{ + char tmpbuf[LOGQUEUE_SIZE]; + va_list ap; + + va_start(ap, fmt); + (void)vsnprintf(tmpbuf, sizeof(tmpbuf), fmt, ap); + va_end(ap); + (void)strlcat(logqueue, tmpbuf, LOGQUEUE_SIZE); +} + + +void +vlog(int pri, const char *fmt, va_list ap) +{ + char tmpbuf[1024]; + char logbuf[LOGQUEUE_SIZE + sizeof(tmpbuf)]; + + if (pri == LOG_DEBUG && !debug) { + logqueue[0] = '\0'; + return; + } + + (void)vsnprintf(tmpbuf, sizeof(tmpbuf), fmt, ap); + (void)strlcpy(logbuf, logqueue, sizeof(logbuf)); + (void)strlcat(logbuf, tmpbuf, sizeof(tmpbuf)); + + logqueue[0] = '\0'; + + if (debug) { + fprintf(stderr, "%s\n", logbuf); + fflush(stderr); + } else + syslog(pri, "%s", logbuf); +} + +void +log_warn(const char *emsg, ...) +{ + char *nfmt; + va_list ap; + + if (emsg == NULL) + logit(LOG_CRIT, "%s", strerror(errno)); + else { + va_start(ap, emsg); + + /* best effort to even work in out of memory situations */ + if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { + /* we tried it... */ + vlog(LOG_CRIT, emsg, ap); + logit(LOG_CRIT, "%s", strerror(errno)); + } else { + vlog(LOG_CRIT, nfmt, ap); + free(nfmt); + } + va_end(ap); + } +} + +void +log_warnx(const char *emsg, ...) +{ + va_list ap; + + va_start(ap, emsg); + vlog(LOG_CRIT, emsg, ap); + va_end(ap); +} + +void +log_info(const char *emsg, ...) +{ + va_list ap; + + va_start(ap, emsg); + vlog(LOG_INFO, emsg, ap); + va_end(ap); +} + +void +log_debug(const char *emsg, ...) +{ + va_list ap; + + va_start(ap, emsg); + vlog(LOG_DEBUG, emsg, ap); + va_end(ap); +} + +void +fatal(const char *emsg) +{ + extern char *__progname; + extern __dead void rtdexit(void); + + if (emsg == NULL) + logit(LOG_CRIT, "fatal in %s: %s", __progname, + strerror(errno)); + else + if (errno) + logit(LOG_CRIT, "fatal in %s: %s: %s", + __progname, emsg, strerror(errno)); + else + logit(LOG_CRIT, "fatal in %s: %s", + __progname, emsg); + + rtdexit(); +} + +void +fatalx(const char *emsg) +{ + errno = 0; + fatal(emsg); +} |