IABSD.fr/src/usr.bin/rsync/log.c

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• Author : claudio
  Date : 2021-06-30 13:10:04
  Hash : b0091597
  Message : Replace Id: tags with OpenBSD: tags OK deraadt@

• usr.bin/rsync/log.c

• /*	$OpenBSD: log.c,v 1.10 2021/06/30 13:10:04 claudio 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);
  }