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dtls_debug.h
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dtls_debug.h
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/*******************************************************************************
*
* Copyright (c) 2011, 2012, 2013, 2014, 2015 Olaf Bergmann (TZI) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
*
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Olaf Bergmann - initial API and implementation
* Hauke Mehrtens - memory optimization, ECC integration
*
*******************************************************************************/
#ifndef _DTLS_DEBUG_H_
#define _DTLS_DEBUG_H_
#include <stdlib.h>
#include "tinydtls.h"
#include "global.h"
#include "session.h"
#ifdef WITH_ZEPHYR
#include <logging/log.h>
#endif /* WITH_ZEPHYR */
#ifdef WITH_CONTIKI
# ifndef DEBUG
# define DEBUG DEBUG_PRINT
# endif /* DEBUG */
#include "net/ip/uip-debug.h"
#ifdef CONTIKI_TARGET_MBXXX
extern char __Stack_Init, _estack;
static inline void check_stack(void) {
const char *p = &__Stack_Init;
while (p < &_estack && *p == 0x38) {
p++;
}
PRINTF("Stack: %d bytes used (%d free)\n", &_estack - p, p - &__Stack_Init);
}
#else /* CONTIKI_TARGET_MBXXX */
static inline void check_stack(void) {
}
#endif /* CONTIKI_TARGET_MBXXX */
#else /* WITH_CONTKI */
#define PRINTF(...)
static inline void check_stack(void) {
}
#endif
/** Pre-defined log levels akin to what is used in \b syslog. */
typedef enum { DTLS_LOG_EMERG=0, DTLS_LOG_ALERT, DTLS_LOG_CRIT, DTLS_LOG_WARN,
DTLS_LOG_NOTICE, DTLS_LOG_INFO, DTLS_LOG_DEBUG
} log_t;
/** Returns a zero-terminated string with the name of this library. */
const char *dtls_package_name(void);
/** Returns a zero-terminated string with the library version. */
const char *dtls_package_version(void);
/** Returns the current log level. */
log_t dtls_get_log_level(void);
/** Sets the log level to the specified value. */
void dtls_set_log_level(log_t level);
/**
* Logging callback handler definition.
*
* Note: The maximum message length is controlled by the size of the definition
* for DTLS_DEBUG_BUF_SIZE (default 128) less 1 for the zero termination.
*
* @param level One of the DTLS_LOG_* values.
* @param message Zero-terminated string message to log.
*/
typedef void (*dtls_log_handler_t) (log_t level, const char *message);
/**
* Add a custom log callback handler.
*
* @param app_handler The logging handler to use or @p NULL to use default handler.
*/
void dtls_set_log_handler(dtls_log_handler_t app_handler);
/**
* Writes the given text to \c stdout. The text is output only when \p
* level is below or equal to the log level that set by
* set_log_level(). */
#ifdef HAVE_VPRINTF
#if (defined(__GNUC__) && !defined(__MINGW32__))
void dsrv_log(log_t level, const char *format, ...) __attribute__ ((format(printf, 2, 3)));
#else /* !__GNUC__ && !__MINGW32__ */
void dsrv_log(log_t level, const char *format, ...);
#endif /* !__GNUC__ && !__MINGW32__ */
#else
#define dsrv_log(level, format, ...) PRINTF(format, ##__VA_ARGS__)
#endif
/** dumps packets in usual hexdump format */
void hexdump(const unsigned char *packet, int length);
/** dump as narrow string of hex digits */
void dump(unsigned char *buf, size_t len);
void dtls_dsrv_hexdump_log(log_t level, const char *name, const unsigned char *buf, size_t length, int extend);
void dtls_dsrv_log_addr(log_t level, const char *name, const session_t *addr);
/* A set of convenience macros for common log levels. */
#ifdef WITH_ZEPHYR
#define dtls_emerg(...) LOG_ERR(__VA_ARGS__)
#define dtls_alert(...) LOG_ERR(__VA_ARGS__)
#define dtls_crit(...) LOG_ERR(__VA_ARGS__)
#define dtls_warn(...) LOG_WRN(__VA_ARGS__)
#define dtls_notice(...) LOG_INF(__VA_ARGS__)
#define dtls_info(...) LOG_INF(__VA_ARGS__)
#define dtls_debug(...) LOG_DBG(__VA_ARGS__)
#define dtls_debug_hexdump(name, buf, length) { LOG_DBG("%s (%zu bytes):", name, length); LOG_HEXDUMP_DBG(buf, length, name); }
#define dtls_debug_dump(name, buf, length) { LOG_DBG("%s (%zu bytes):", name, length); LOG_HEXDUMP_DBG(buf, length, name); }
#else /* WITH_ZEPHYR */
#define dtls_emerg(...) dsrv_log(DTLS_LOG_EMERG, __VA_ARGS__)
#define dtls_alert(...) dsrv_log(DTLS_LOG_ALERT, __VA_ARGS__)
#define dtls_crit(...) dsrv_log(DTLS_LOG_CRIT, __VA_ARGS__)
#define dtls_warn(...) dsrv_log(DTLS_LOG_WARN, __VA_ARGS__)
#define dtls_notice(...) dsrv_log(DTLS_LOG_NOTICE, __VA_ARGS__)
#define dtls_info(...) dsrv_log(DTLS_LOG_INFO, __VA_ARGS__)
#define dtls_debug(...) dsrv_log(DTLS_LOG_DEBUG, __VA_ARGS__)
#define dtls_debug_hexdump(name, buf, length) dtls_dsrv_hexdump_log(DTLS_LOG_DEBUG, name, buf, length, 1)
#define dtls_debug_dump(name, buf, length) dtls_dsrv_hexdump_log(DTLS_LOG_DEBUG, name, buf, length, 0)
#endif /* WITH_ZEPHYR */
#endif /* _DTLS_DEBUG_H_ */