1 // logging.h -- Utility functions for managing log messages 2 // Copyright (C) 2008-2009 Markus Gutschke <markus@shellinabox.com> 3 // 4 // This program is free software; you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License version 2 as 6 // published by the Free Software Foundation. 7 // 8 // This program is distributed in the hope that it will be useful, 9 // but WITHOUT ANY WARRANTY; without even the implied warranty of 10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 // GNU General Public License for more details. 12 // 13 // You should have received a copy of the GNU General Public License along 14 // with this program; if not, write to the Free Software Foundation, Inc., 15 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 16 // 17 // In addition to these license terms, the author grants the following 18 // additional rights: 19 // 20 // If you modify this program, or any covered work, by linking or 21 // combining it with the OpenSSL project's OpenSSL library (or a 22 // modified version of that library), containing parts covered by the 23 // terms of the OpenSSL or SSLeay licenses, the author 24 // grants you additional permission to convey the resulting work. 25 // Corresponding Source for a non-source form of such a combination 26 // shall include the source code for the parts of OpenSSL used as well 27 // as that of the covered work. 28 // 29 // You may at your option choose to remove this additional permission from 30 // the work, or from any part of it. 31 // 32 // It is possible to build this program in a way that it loads OpenSSL 33 // libraries at run-time. If doing so, the following notices are required 34 // by the OpenSSL and SSLeay licenses: 35 // 36 // This product includes software developed by the OpenSSL Project 37 // for use in the OpenSSL Toolkit. (http://www.openssl.org/) 38 // 39 // This product includes cryptographic software written by Eric Young 40 // (eay@cryptsoft.com) 41 // 42 // 43 // The most up-to-date version of this program is always available from 44 // http://shellinabox.com 45 46 #ifndef LOGGING_H__ 47 #define LOGGING_H__ 48 49 #include <stdarg.h> 50 51 #define MSG_QUIET -1 52 #define MSG_MESSAGE 0 53 #define MSG_ERROR 1 54 #define MSG_WARN 2 55 #define MSG_INFO 3 56 #define MSG_DEBUG 4 57 #define MSG_DEFAULT MSG_ERROR 58 59 #define check(x) do { \ 60 if (!(x)) \ 61 fatal("Check failed at "__FILE__":%d in %s(): %s", \ 62 __LINE__, __func__, #x); \ 63 } while (0) 64 65 #define dcheck(x) do { \ 66 if (!(x)) \ 67 (logIsDebug() ? fatal : error)( \ 68 "Check failed at "__FILE__":%d in %s(): %s", \ 69 __LINE__, __func__, #x); \ 70 } while (0) 71 72 void debug(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 73 void info(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 74 void warn(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 75 void error(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 76 void message(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 77 void fatal(const char *fmt, ...) __attribute__((format(printf, 1, 2), 78 noreturn)); 79 int logIsDebug(void); 80 int logIsInfo(void); 81 int logIsWarn(void); 82 int logIsError(void); 83 int logIsMessage(void); 84 int logIsQuiet(void); 85 int logIsDefault(void); 86 int logIsVerbose(void); 87 void logSetLogLevel(int level); 88 89 char *vStringPrintf(char *buf, const char *fmt, va_list ap); 90 char *stringPrintf(char *buf, const char *fmt, ...) 91 __attribute__((format(printf, 2, 3))); 92 char *stringPrintfUnchecked(char *buf, const char *fmt, ...); 93 94 #endif /* LOGGING_H__ */ 95