X-Git-Url: https://www.tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Flogger.c;h=7fb16297ca7cc19b6fdfdee75475cd95ae046cf5;hb=f6e87ab476a0faf8b124ecaaa27f967d825e6457;hp=de6622701b76200dbd4237a5650383d3024be52e;hpb=0b9175e998c2180e5d73ef3d644a49d620c68cad;p=tinc diff --git a/src/logger.c b/src/logger.c index de662270..7fb16297 100644 --- a/src/logger.c +++ b/src/logger.c @@ -1,7 +1,7 @@ /* logger.c -- logging code - Copyright (C) 2003 Guus Sliepen - 2003 Ivo Timmermans + Copyright (C) 2004-2017 Guus Sliepen + 2004-2005 Ivo Timmermans This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -13,83 +13,239 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - $Id: logger.c,v 1.1.2.1 2003/07/06 22:11:31 guus Exp $ + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#include -#include -#include +#include "system.h" #include "conf.h" +#include "meta.h" +#include "names.h" #include "logger.h" +#include "connection.h" +#include "control_common.h" +#include "process.h" +#include "sptps.h" -#include "system.h" +int debug_level = DEBUG_NOTHING; +static logmode_t logmode = LOGMODE_STDERR; +static pid_t logpid; +static FILE *logfile = NULL; +#ifdef HAVE_MINGW +static HANDLE loghandle = NULL; +#endif +static const char *logident = NULL; +bool logcontrol = false; +int umbilical = 0; -volatile int debug_level = DEBUG_NOTHING; -int logmode = LOGMODE_STDERR; -pid_t logpid; -extern char *logfilename; -FILE *logfile = NULL; -const char *logident = NULL; +static void real_logger(int level, int priority, const char *message) { + char timestr[32] = ""; + static bool suppress = false; -void openlogger(const char *ident, int mode) { - char *fname; + // Bail out early if there is nothing to do. + if(suppress) { + return; + } - logident = ident; - logmode = mode; - - switch(mode) { - case LOGMODE_STDERR: - logpid = getpid(); - break; - case LOGMODE_FILE: - logpid = getpid(); - logfile = fopen(logfilename, "a"); - if(!logfile) - logmode = LOGMODE_NULL; - break; - case LOGMODE_SYSLOG: - openlog(logident, LOG_CONS | LOG_PID, LOG_DAEMON); - break; + if(!logcontrol && (level > debug_level || logmode == LOGMODE_NULL)) { + return; } -} -void vlogger(int priority, const char *format, va_list ap) { - switch(logmode) { + if(level <= debug_level) { + switch(logmode) { case LOGMODE_STDERR: - vfprintf(stderr, format, ap); - fprintf(stderr, "\n"); + fprintf(stderr, "%s\n", message); + fflush(stderr); break; + case LOGMODE_FILE: - fprintf(logfile, "%d %s[%d]: ", time(NULL), logident, logpid); - vfprintf(logfile, format, ap); - fprintf(logfile, "\n"); + if(!now.tv_sec) { + gettimeofday(&now, NULL); + } + + time_t now_sec = now.tv_sec; + strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&now_sec)); + fprintf(logfile, "%s %s[%ld]: %s\n", timestr, logident, (long)logpid, message); + fflush(logfile); break; + case LOGMODE_SYSLOG: -#ifdef HAVE_VSYSLOG - vsyslog(priority, format, ap); -#else +#ifdef HAVE_MINGW { - char message[4096]; - vsnprintf(message, sizeof(message), format, ap); - syslog(priority, "%s", message); + const char *messages[] = {message}; + ReportEvent(loghandle, priority, 0, 0, NULL, 1, 0, messages, NULL); } + +#else +#ifdef HAVE_SYSLOG_H + syslog(priority, "%s", message); +#endif #endif break; + + case LOGMODE_NULL: + break; + } + + if(umbilical && do_detach) { + write(umbilical, message, strlen(message)); + write(umbilical, "\n", 1); + } + } + + if(logcontrol) { + suppress = true; + logcontrol = false; + + for list_each(connection_t, c, connection_list) { + if(!c->status.log) { + continue; + } + + logcontrol = true; + + if(level > (c->outcompression >= 0 ? c->outcompression : debug_level)) { + continue; + } + + int len = strlen(message); + + if(send_request(c, "%d %d %d", CONTROL, REQ_LOG, len)) { + send_meta(c, message, len); + } + } + + suppress = false; + } +} + +void logger(int level, int priority, const char *format, ...) { + va_list ap; + char message[1024] = ""; + + va_start(ap, format); + int len = vsnprintf(message, sizeof(message), format, ap); + message[sizeof(message) - 1] = 0; + va_end(ap); + + if(len > 0 && len < sizeof(message) - 1 && message[len - 1] == '\n') { + message[len - 1] = 0; + } + + real_logger(level, priority, message); +} + +static void sptps_logger(sptps_t *s, int s_errno, const char *format, va_list ap) { + char message[1024]; + size_t msglen = sizeof(message); + + int len = vsnprintf(message, msglen, format, ap); + message[sizeof(message) - 1] = 0; + + if(len > 0 && len < sizeof(message) - 1) { + if(message[len - 1] == '\n') { + message[--len] = 0; + } + + // WARNING: s->handle can point to a connection_t or a node_t, + // but both types have the name and hostname fields at the same offsets. + connection_t *c = s->handle; + + if(c) { + snprintf(message + len, sizeof(message) - len, " from %s (%s)", c->name, c->hostname); + } + } + + real_logger(DEBUG_ALWAYS, LOG_ERR, message); +} + +void openlogger(const char *ident, logmode_t mode) { + logident = ident; + logmode = mode; + + switch(mode) { + case LOGMODE_STDERR: + logpid = getpid(); + break; + + case LOGMODE_FILE: + logpid = getpid(); + logfile = fopen(logfilename, "a"); + + if(!logfile) { + fprintf(stderr, "Could not open log file %s: %s\n", logfilename, strerror(errno)); + logmode = LOGMODE_NULL; + } + + break; + + case LOGMODE_SYSLOG: +#ifdef HAVE_MINGW + loghandle = RegisterEventSource(NULL, logident); + + if(!loghandle) { + fprintf(stderr, "Could not open log handle!"); + logmode = LOGMODE_NULL; + } + + break; +#else +#ifdef HAVE_SYSLOG_H + openlog(logident, LOG_CONS | LOG_PID, LOG_DAEMON); + break; +#endif +#endif + + case LOGMODE_NULL: + break; + } + + if(logmode != LOGMODE_NULL) { + sptps_log = sptps_logger; + } else { + sptps_log = sptps_log_quiet; + } +} + +void reopenlogger() { + if(logmode != LOGMODE_FILE) { + return; + } + + fflush(logfile); + FILE *newfile = fopen(logfilename, "a"); + + if(!newfile) { + logger(DEBUG_ALWAYS, LOG_ERR, "Unable to reopen log file %s: %s", logfilename, strerror(errno)); + return; } + + fclose(logfile); + logfile = newfile; } + void closelogger(void) { switch(logmode) { - case LOGMODE_FILE: - fclose(logfile); - break; - case LOGMODE_SYSLOG: - closelog(); - break; + case LOGMODE_FILE: + fclose(logfile); + break; + + case LOGMODE_SYSLOG: +#ifdef HAVE_MINGW + DeregisterEventSource(loghandle); + break; +#else +#ifdef HAVE_SYSLOG_H + closelog(); + break; +#endif +#endif + + case LOGMODE_NULL: + case LOGMODE_STDERR: + break; } }