1/* 2 * Copyright 2011 Tresys Technology, LLC. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * 1. Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY TRESYS TECHNOLOGY, LLC ``AS IS'' AND ANY EXPRESS 15 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 17 * EVENT SHALL TRESYS TECHNOLOGY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 19 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 21 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 22 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * The views and conclusions contained in the software and documentation are those 26 * of the authors and should not be interpreted as representing official policies, 27 * either expressed or implied, of Tresys Technology, LLC. 28 */ 29 30#include <stdlib.h> 31#include <stdio.h> 32#include <stdarg.h> 33#include <string.h> 34 35#include <cil/cil.h> 36#include "cil_log.h" 37 38static enum cil_log_level cil_log_level = CIL_ERR; 39 40static void cil_default_log_handler(__attribute__((unused)) int lvl, const char *msg) 41{ 42 fprintf(stderr, "%s", msg); 43} 44 45static void (*cil_log_handler)(int lvl, const char *msg) = &cil_default_log_handler; 46 47void cil_set_log_handler(void (*handler)(int lvl, const char *msg)) 48{ 49 cil_log_handler = handler; 50} 51 52__attribute__ ((format (printf, 2, 0))) void cil_vlog(enum cil_log_level lvl, const char *msg, va_list args) 53{ 54 if (cil_log_level >= lvl) { 55 char buff[MAX_LOG_SIZE]; 56 int n = vsnprintf(buff, MAX_LOG_SIZE, msg, args); 57 if (n > 0) { 58 (*cil_log_handler)(cil_log_level, buff); 59 if (n >= MAX_LOG_SIZE) { 60 (*cil_log_handler)(cil_log_level, " <LOG MESSAGE TRUNCATED>"); 61 } 62 } 63 } 64} 65 66__attribute__ ((format (printf, 2, 3))) void cil_log(enum cil_log_level lvl, const char *msg, ...) 67{ 68 va_list args; 69 va_start(args, msg); 70 cil_vlog(lvl, msg, args); 71 va_end(args); 72} 73 74void cil_set_log_level(enum cil_log_level lvl) 75{ 76 cil_log_level = lvl; 77} 78 79enum cil_log_level cil_get_log_level(void) 80{ 81 return cil_log_level; 82} 83