122 lines
4 KiB
C
122 lines
4 KiB
C
/*-
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* Free/Libre Near Field Communication (NFC) library
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*
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* Libnfc historical contributors:
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* Copyright (C) 2009 Roel Verdult
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* Copyright (C) 2009-2013 Romuald Conty
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* Copyright (C) 2010-2012 Romain Tartière
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* Copyright (C) 2010-2013 Philippe Teuwen
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* Copyright (C) 2012-2013 Ludovic Rousseau
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* See AUTHORS file for a more comprehensive list of contributors.
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* Additional contributors of this file:
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef __LOG_H__
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#define __LOG_H__
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif // HAVE_CONFIG_H
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#include "nfc-internal.h"
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#define NFC_LOG_PRIORITY_NONE 0
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#define NFC_LOG_PRIORITY_ERROR 1
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#define NFC_LOG_PRIORITY_INFO 2
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#define NFC_LOG_PRIORITY_DEBUG 3
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#define NFC_LOG_GROUP_GENERAL 1
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#define NFC_LOG_GROUP_CONFIG 2
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#define NFC_LOG_GROUP_CHIP 3
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#define NFC_LOG_GROUP_DRIVER 4
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#define NFC_LOG_GROUP_COM 5
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#define NFC_LOG_GROUP_LIBUSB 6
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/*
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To enable log only for one (or more) group, you can use this formula:
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log_level = NFC_LOG_PRIORITY(main) + NFC_LOG_PRIORITY(group) * 2 ^ (NFC_LOG_GROUP(group) * 2)
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Examples:
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* Main log level is NONE and only communication group log is set to DEBUG verbosity (for rx/tx trace):
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LIBNFC_LOG_LEVEL=3072 // 0+3072
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* Main log level is ERROR and driver layer log is set to DEBUG level:
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LIBNFC_LOG_LEVEL=769 // 1+768
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* Main log level is ERROR, driver layer is set to INFO and communication is set to DEBUG:
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LIBNFC_LOG_LEVEL=3585 // 1+512+3072
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*/
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//int log_priority_to_int(const char* priority);
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const char *log_priority_to_str(const int priority);
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#if defined LOG
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# ifndef __has_attribute
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# define __has_attribute(x) 0
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# endif
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# if __has_attribute(format) || defined(__GNUC__)
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# define __has_attribute_format 1
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# endif
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void log_init(const nfc_context *context);
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void log_exit(void);
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void log_put(const uint8_t group, const char *category, const uint8_t priority, const char *format, ...)
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# if __has_attribute_format
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__attribute__((format(printf, 4, 5)))
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# endif
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;
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#else
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// No logging
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#define log_init(nfc_context) ((void) 0)
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#define log_exit() ((void) 0)
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#define log_put(group, category, priority, format, ...) do {} while (0)
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#endif // LOG
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/**
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* @macro LOG_HEX
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* @brief Log a byte-array in hexadecimal format
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* Max values: pcTag of 121 bytes + ": " + 300 bytes of data+ "\0" => acBuf of 1024 bytes
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*/
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# ifdef LOG
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# define LOG_HEX(group, pcTag, pbtData, szBytes) do { \
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size_t __szPos; \
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char __acBuf[1024]; \
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size_t __szBuf = 0; \
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if ((int)szBytes < 0) { \
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fprintf (stderr, "%s:%d: Attempt to print %d bytes!\n", __FILE__, __LINE__, (int)szBytes); \
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log_put (group, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s:%d: Attempt to print %d bytes!\n", __FILE__, __LINE__, (int)szBytes); \
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abort(); \
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break; \
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} \
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snprintf (__acBuf + __szBuf, sizeof(__acBuf) - __szBuf, "%s: ", pcTag); \
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__szBuf += strlen (pcTag) + 2; \
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for (__szPos=0; (__szPos < (size_t)(szBytes)) && (__szBuf < sizeof(__acBuf)); __szPos++) { \
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snprintf (__acBuf + __szBuf, sizeof(__acBuf) - __szBuf, "%02x ",((uint8_t *)(pbtData))[__szPos]); \
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__szBuf += 3; \
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} \
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log_put (group, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", __acBuf); \
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} while (0);
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# else
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# define LOG_HEX(group, pcTag, pbtData, szBytes) do { \
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(void) group; \
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(void) pcTag; \
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(void) pbtData; \
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(void) szBytes; \
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} while (0);
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# endif
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#endif // __LOG_H__
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