crypto/include/err.h

/*
 * err.h
 * 
 * error status codes
 *
 * David A. McGrew
 * Cisco Systems, Inc.
 */
/*
 *	
 * Copyright (c) 2001-2006, Cisco Systems, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 *   Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 *   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.
 * 
 *   Neither the name of the Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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
 * COPYRIGHT HOLDERS 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 ERR_H
#define ERR_H

#include <stdio.h>
#include <stdarg.h>
#include "srtp.h"

/**
 * @defgroup Error Error Codes
 * 
 * Error status codes are represented by the enumeration err_status_t.
 * 
 * @{
 */


/**
 * @}
 */

typedef enum {
  err_level_emergency = 0,
  err_level_alert,
  err_level_critical,
  err_level_error,
  err_level_warning,
  err_level_notice,
  err_level_info,
  err_level_debug,
  err_level_none
} err_reporting_level_t;

/*
 * err_reporting_init prepares the error system.  If
 * ERR_REPORTING_SYSLOG is defined, it will open syslog.
 *
 * The ident argument is a string that will be prepended to
 * all syslog messages.  It is conventionally argv[0].
 */

err_status_t
err_reporting_init(const char *ident);

#ifdef SRTP_KERNEL_LINUX
extern err_reporting_level_t err_level;
#else

/*
 * keydaemon_report_error reports a 'printf' formatted error
 * string, followed by a an arg list.  The priority argument
 * is equivalent to that defined for syslog.
 *
 * Errors will be reported to ERR_REPORTING_FILE, if defined, and to
 * syslog, if ERR_REPORTING_SYSLOG is defined.
 *
 */

void
err_report(int priority, const char *format, ...);
#endif /* ! SRTP_KERNEL_LINUX */


/*
 * debug_module_t defines a debug module
 */

typedef struct {
  int   on;          /* 1 if debugging is on, 0 if it is off */
  const char *name;  /* printable name for debug module      */
} debug_module_t;

#ifdef ENABLE_DEBUGGING

#define debug_on(mod)  (mod).on = 1

#define debug_off(mod) (mod).on = 0

/* use err_report() to report debug message */
#define debug_print(mod, format, arg)                  \
  if (mod.on) err_report(err_level_debug, ("%s: " format "\n"), mod.name, arg)
#define debug_print2(mod, format, arg1,arg2)                  \
  if (mod.on) err_report(err_level_debug, ("%s: " format "\n"), mod.name, arg1,arg2)

#else

/* define macros to do nothing */
#define debug_print(mod, format, arg)

#define debug_on(mod)

#define debug_off(mod)

#endif

#endif /* ERR_H */