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/* $Id: log.c,v 1.9 2020/05/17 19:54:41 deraadt Exp $ */
/*
* Copyright (c) 2019 Kristaps Dzonsons <kristaps@bsd.lv>
*
* 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 <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "extern.h"
extern int verbose;
/*
* Log a message at level "level", starting at zero, which corresponds
* to the current verbosity level opts->verbose (whose verbosity starts
* at one).
*/
void
rsync_log(int level, const char *fmt, ...)
{
char *buf = NULL;
va_list ap;
if (verbose < level + 1)
return;
if (fmt != NULL) {
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1) {
va_end(ap);
return;
}
va_end(ap);
}
if (level <= 0 && buf != NULL)
fprintf(stderr, "%s\n", buf);
else if (level > 0)
fprintf(stderr, "%s: %s%s\n", getprogname(),
(buf != NULL) ? ": " : "",
(buf != NULL) ? buf : "");
free(buf);
}
/*
* This reports an error---not a warning.
* However, it is not like errx(3) in that it does not exit.
*/
void
rsync_errx(const char *fmt, ...)
{
char *buf = NULL;
va_list ap;
if (fmt != NULL) {
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1) {
va_end(ap);
return;
}
va_end(ap);
}
fprintf(stderr, "%s: error%s%s\n", getprogname(),
(buf != NULL) ? ": " : "",
(buf != NULL) ? buf : "");
free(buf);
}
/*
* This reports an error---not a warning.
* However, it is not like err(3) in that it does not exit.
*/
void
rsync_err(const char *fmt, ...)
{
char *buf = NULL;
va_list ap;
int er = errno;
if (fmt != NULL) {
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1) {
va_end(ap);
return;
}
va_end(ap);
}
fprintf(stderr, "%s: error%s%s: %s\n", getprogname(),
(buf != NULL) ? ": " : "",
(buf != NULL) ? buf : "", strerror(er));
free(buf);
}
/*
* Prints a non-terminal error message, that is, when reporting on the
* chain of functions from which the actual warning occurred.
*/
void
rsync_errx1(const char *fmt, ...)
{
char *buf = NULL;
va_list ap;
if (verbose < 1)
return;
if (fmt != NULL) {
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1) {
va_end(ap);
return;
}
va_end(ap);
}
fprintf(stderr, "%s: error%s%s\n", getprogname(),
(buf != NULL) ? ": " : "",
(buf != NULL) ? buf : "");
free(buf);
}
/*
* Prints a warning message.
*/
void
rsync_warnx(const char *fmt, ...)
{
char *buf = NULL;
va_list ap;
if (fmt != NULL) {
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1) {
va_end(ap);
return;
}
va_end(ap);
}
fprintf(stderr, "%s: warning%s%s\n", getprogname(),
(buf != NULL) ? ": " : "",
(buf != NULL) ? buf : "");
free(buf);
}
/*
* Prints a warning with an errno.
* It uses a level detector for when to inhibit printing.
*/
void
rsync_warn(int level, const char *fmt, ...)
{
char *buf = NULL;
va_list ap;
int er = errno;
if (verbose < level)
return;
if (fmt != NULL) {
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1) {
va_end(ap);
return;
}
va_end(ap);
}
fprintf(stderr, "%s: warning%s%s: %s\n", getprogname(),
(buf != NULL) ? ": " : "",
(buf != NULL) ? buf : "", strerror(er));
free(buf);
}
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