#ifndef lint static char *rcsid = "$Id: log.c,v 1.1.1.1 2003-06-04 00:25:53 marka Exp $"; #endif /* * Copyright (c) 2000 Japan Network Information Center. All rights reserved. * * By using this file, you agree to the terms and conditions set forth bellow. * * LICENSE TERMS AND CONDITIONS * * The following License Terms and Conditions apply, unless a different * license is obtained from Japan Network Information Center ("JPNIC"), * a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda, * Chiyoda-ku, Tokyo 101-0047, Japan. * * 1. Use, Modification and Redistribution (including distribution of any * modified or derived work) in source and/or binary forms is permitted * under this License Terms and Conditions. * * 2. Redistribution of source code must retain the copyright notices as they * appear in each source code file, this License Terms and Conditions. * * 3. Redistribution in binary form must reproduce the Copyright Notice, * this License Terms and Conditions, in the documentation and/or other * materials provided with the distribution. For the purposes of binary * distribution the "Copyright Notice" refers to the following language: * "Copyright (c) 2000-2002 Japan Network Information Center. All rights reserved." * * 4. The name of JPNIC may not be used to endorse or promote products * derived from this Software without specific prior written approval of * JPNIC. * * 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC * "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 JPNIC 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 DAMAGES. */ #include #include #include #include #ifdef HAVE_UNISTD_H #include #endif #include #define LOGLEVEL_ENV "IDN_LOG_LEVEL" #ifdef DEBUG #define DEFAULT_LOG_LEVEL idn_log_level_info #else #define DEFAULT_LOG_LEVEL idn_log_level_error #endif static int log_level = -1; static idn_log_proc_t log_proc; static void initialize(void); static void log(int level, const char *fmt, va_list args); static void log_to_stderr(int level, const char *buf); void idn_log_fatal(const char *fmt, ...) { va_list args; va_start(args, fmt); log(idn_log_level_fatal, fmt, args); va_end(args); exit(1); } void idn_log_error(const char *fmt, ...) { va_list args; va_start(args, fmt); log(idn_log_level_error, fmt, args); va_end(args); } void idn_log_warning(const char *fmt, ...) { va_list args; va_start(args, fmt); log(idn_log_level_warning, fmt, args); va_end(args); } void idn_log_info(const char *fmt, ...) { va_list args; va_start(args, fmt); log(idn_log_level_info, fmt, args); va_end(args); } void idn_log_trace(const char *fmt, ...) { va_list args; va_start(args, fmt); log(idn_log_level_trace, fmt, args); va_end(args); } void idn_log_dump(const char *fmt, ...) { va_list args; va_start(args, fmt); log(idn_log_level_dump, fmt, args); va_end(args); } void idn_log_setlevel(int level) { if (level >= 0) log_level = level; } int idn_log_getlevel(void) { if (log_level < 0) initialize(); return log_level; } void idn_log_setproc(idn_log_proc_t proc) { if (proc == NULL) log_proc = log_to_stderr; else log_proc = proc; } static void initialize(void) { char *s; if (log_level < 0) { if ((s = getenv(LOGLEVEL_ENV)) != NULL) { int level = atoi(s); if (level >= 0) log_level = level; } if (log_level < 0) log_level = DEFAULT_LOG_LEVEL; } if (log_proc == NULL) log_proc = log_to_stderr; } static void log(int level, const char *fmt, va_list args) { char buf[1024]; initialize(); if (log_level < level) return; #if HAVE_VSNPRINTF (void)vsnprintf(buf, sizeof(buf), fmt, args); #else /* Let's hope 1024 is enough.. */ (void)vsprintf(buf, fmt, args); #endif (*log_proc)(level, buf); } static void log_to_stderr(int level, const char *buf) { char *title; char tmp[20]; switch (level) { case idn_log_level_fatal: title = "FATAL"; break; case idn_log_level_error: title = "ERROR"; break; case idn_log_level_warning: title = "WARNING"; break; case idn_log_level_info: title = "INFO"; break; case idn_log_level_trace: title = "TRACE"; break; case idn_log_level_dump: title = "DUMP"; break; default: (void)sprintf(tmp, "LEVEL%d", level); title = tmp; break; } fprintf(stderr, "%u: [%s] %s", (unsigned int)getpid(), title, buf); }