603 lines
17 KiB
C++
603 lines
17 KiB
C++
/*
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* ZoneMinder Logger Implementation, $Date$, $Revision$
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* Copyright (C) 2001-2008 Philip Coombes
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "zm_logger.h"
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#include "zm_config.h"
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#include "zm_utils.h"
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#include "zm_db.h"
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <syslog.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <libgen.h>
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#ifdef __FreeBSD__
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#include <sys/thr.h>
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#endif
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#include <cstdarg>
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bool Logger::smInitialised = false;
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Logger *Logger::smInstance = nullptr;
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Logger::StringMap Logger::smCodes;
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Logger::IntMap Logger::smSyslogPriorities;
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void Logger::usrHandler(int sig) {
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Logger *logger = fetch();
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if ( sig == SIGUSR1 )
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logger->level(logger->level()+1);
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else if ( sig == SIGUSR2 )
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logger->level(logger->level()-1);
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Info("Logger - Level changed to %d", logger->level());
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}
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Logger::Logger() :
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mLevel(INFO),
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mTerminalLevel(NOLOG),
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mDatabaseLevel(NOLOG),
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mFileLevel(NOLOG),
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mSyslogLevel(NOLOG),
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mEffectiveLevel(NOLOG),
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mDbConnected(false),
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mLogPath(staticConfig.PATH_LOGS.c_str()),
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//mLogFile( mLogPath+"/"+mId+".log" ),
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mLogFileFP(nullptr),
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mHasTerminal(false),
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mFlush(false) {
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if ( smInstance ) {
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Panic("Attempt to create second instance of Logger class");
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}
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if ( !smInitialised ) {
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smCodes[INFO] = "INF";
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smCodes[WARNING] = "WAR";
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smCodes[ERROR] = "ERR";
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smCodes[FATAL] = "FAT";
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smCodes[PANIC] = "PNC";
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smCodes[NOLOG] = "OFF";
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smSyslogPriorities[INFO] = LOG_INFO;
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smSyslogPriorities[WARNING] = LOG_WARNING;
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smSyslogPriorities[ERROR] = LOG_ERR;
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smSyslogPriorities[FATAL] = LOG_ERR;
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smSyslogPriorities[PANIC] = LOG_ERR;
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char code[4] = "";
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for ( int i = DEBUG1; i <= DEBUG9; i++ ) {
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snprintf(code, sizeof(code), "DB%d", i);
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smCodes[i] = code;
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smSyslogPriorities[i] = LOG_DEBUG;
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}
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smInitialised = true;
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}
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if ( fileno(stderr) && isatty(fileno(stderr)) ) {
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mHasTerminal = true;
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mTerminalLevel = WARNING;
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}
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} // End Logger::Logger
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Logger::~Logger() {
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terminate();
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smCodes.clear();
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smSyslogPriorities.clear();
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smInitialised = false;
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#if 0
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for ( StringMap::iterator itr = smCodes.begin(); itr != smCodes.end(); itr ++ ) {
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smCodes.erase( itr );
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}
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for ( IntMap::iterator itr = smSyslogPriorities.begin(); itr != smSyslogPriorities.end(); itr ++ ) {
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smSyslogPriorities.erase(itr);
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}
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#endif
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}
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void Logger::initialise(const std::string &id, const Options &options) {
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char *envPtr;
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if ( !id.empty() )
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this->id(id);
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std::string tempLogFile;
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if ( (envPtr = getTargettedEnv("LOG_FILE")) ) {
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tempLogFile = envPtr;
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} else if ( options.mLogFile.size() ) {
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tempLogFile = options.mLogFile;
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} else {
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// options.mLogPath defaults to '.' so only use it if we don't already have a path
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if ( (!mLogPath.size()) || options.mLogPath != "." ) {
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mLogPath = options.mLogPath;
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}
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tempLogFile = mLogPath+"/"+mId+".log";
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}
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Level tempLevel = INFO;
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Level tempTerminalLevel = mTerminalLevel;
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Level tempDatabaseLevel = mDatabaseLevel;
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Level tempFileLevel = mFileLevel;
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Level tempSyslogLevel = mSyslogLevel;
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if ( options.mTerminalLevel != NOOPT )
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tempTerminalLevel = options.mTerminalLevel;
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// DEBUG1 == 1. So >= DEBUG1, we set to DEBUG9?! Why?
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if ( options.mDatabaseLevel != NOOPT )
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tempDatabaseLevel = options.mDatabaseLevel;
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else
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tempDatabaseLevel = config.log_level_database >= DEBUG1 ? DEBUG9 : config.log_level_database;
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if ( options.mFileLevel != NOOPT )
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tempFileLevel = options.mFileLevel;
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else
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tempFileLevel = config.log_level_file >= DEBUG1 ? DEBUG9 : config.log_level_file;
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if ( options.mSyslogLevel != NOOPT )
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tempSyslogLevel = options.mSyslogLevel;
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else
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tempSyslogLevel = config.log_level_syslog >= DEBUG1 ? DEBUG9 : config.log_level_syslog;
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// Legacy
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if ( (envPtr = getenv("LOG_PRINT")) )
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tempTerminalLevel = atoi(envPtr) ? DEBUG9 : NOLOG;
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if ( (envPtr = getTargettedEnv("LOG_LEVEL")) )
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tempLevel = atoi(envPtr);
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if ( (envPtr = getTargettedEnv("LOG_LEVEL_TERM")) )
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tempTerminalLevel = atoi(envPtr);
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if ( (envPtr = getTargettedEnv("LOG_LEVEL_DATABASE")) )
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tempDatabaseLevel = atoi(envPtr);
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if ( (envPtr = getTargettedEnv("LOG_LEVEL_FILE")) )
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tempFileLevel = atoi(envPtr);
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if ( (envPtr = getTargettedEnv("LOG_LEVEL_SYSLOG")) )
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tempSyslogLevel = atoi(envPtr);
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if ( config.log_debug ) {
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StringVector targets = split(config.log_debug_target, "|");
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for ( unsigned int i = 0; i < targets.size(); i++ ) {
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const std::string &target = targets[i];
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if ( target == mId || target == "_"+mId || target == "_"+mIdRoot || target == "" ) {
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if ( config.log_debug_level > NOLOG ) {
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tempLevel = config.log_debug_level;
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if ( config.log_debug_file[0] ) {
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tempLogFile = config.log_debug_file;
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tempFileLevel = tempLevel;
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}
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}
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}
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} // end foreach target
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} else {
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// if we don't have debug turned on, then the max effective log level is INFO
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if ( tempSyslogLevel > INFO ) tempSyslogLevel = INFO;
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if ( tempFileLevel > INFO ) tempFileLevel = INFO;
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if ( tempTerminalLevel > INFO ) tempTerminalLevel = INFO;
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if ( tempDatabaseLevel > INFO ) tempDatabaseLevel = INFO;
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if ( tempLevel > INFO ) tempLevel = INFO;
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} // end if config.log_debug
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logFile(tempLogFile);
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terminalLevel(tempTerminalLevel);
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databaseLevel(tempDatabaseLevel);
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fileLevel(tempFileLevel);
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syslogLevel(tempSyslogLevel);
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level(tempLevel);
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mFlush = false;
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if ( (envPtr = getenv("LOG_FLUSH")) ) {
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mFlush = atoi(envPtr);
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} else if ( config.log_debug ) {
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mFlush = true;
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}
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{
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struct sigaction action;
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memset(&action, 0, sizeof(action));
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action.sa_handler = usrHandler;
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action.sa_flags = SA_RESTART;
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// Does this REALLY need to be fatal?
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if ( sigaction(SIGUSR1, &action, 0) < 0 ) {
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Fatal("sigaction(), error = %s", strerror(errno));
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}
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if ( sigaction(SIGUSR2, &action, 0) < 0) {
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Fatal("sigaction(), error = %s", strerror(errno));
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}
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}
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mInitialised = true;
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Debug(1, "LogOpts: level=%s effective=%s, screen=%s, database=%s, logfile=%s->%s, syslog=%s",
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smCodes[mLevel].c_str(),
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smCodes[mEffectiveLevel].c_str(),
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smCodes[mTerminalLevel].c_str(),
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smCodes[mDatabaseLevel].c_str(),
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smCodes[mFileLevel].c_str(),
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mLogFile.c_str(),
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smCodes[mSyslogLevel].c_str()
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);
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}
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void Logger::terminate() {
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if ( mFileLevel > NOLOG )
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closeFile();
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if ( mSyslogLevel > NOLOG )
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closeSyslog();
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if ( mDatabaseLevel > NOLOG )
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closeDatabase();
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}
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// These don't belong here, they have nothing to do with logging
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bool Logger::boolEnv(const std::string &name, bool defaultValue) {
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const char *envPtr = getenv(name.c_str());
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return envPtr ? atoi(envPtr) : defaultValue;
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}
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int Logger::intEnv(const std::string &name, bool defaultValue) {
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const char *envPtr = getenv(name.c_str());
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return envPtr ? atoi(envPtr) : defaultValue;
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}
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std::string Logger::strEnv(const std::string &name, const std::string &defaultValue) {
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const char *envPtr = getenv(name.c_str());
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return envPtr ? envPtr : defaultValue;
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}
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char *Logger::getTargettedEnv(const std::string &name) {
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std::string envName = name+"_"+mId;
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char *envPtr = getenv(envName.c_str());
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if ( !envPtr && mId != mIdRoot ) {
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envName = name+"_"+mIdRoot;
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envPtr = getenv(envName.c_str());
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}
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if ( !envPtr )
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envPtr = getenv(name.c_str());
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return envPtr;
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}
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const std::string &Logger::id(const std::string &id) {
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std::string tempId = id;
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size_t pos;
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// Remove whitespace
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while ( (pos = tempId.find_first_of(" \t")) != std::string::npos ) {
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tempId.replace(pos, 1, "");
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}
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// Replace non-alphanum with underscore
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while ( (pos = tempId.find_first_not_of("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_")) != std::string::npos ) {
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tempId.replace(pos, 1, "_");
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}
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if ( mId != tempId ) {
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mId = tempId;
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pos = mId.find('_');
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if ( pos != std::string::npos ) {
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mIdRoot = mId.substr(0, pos);
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if ( ++pos < mId.size() )
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mIdArgs = mId.substr(pos);
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}
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}
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return mId;
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}
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Logger::Level Logger::level(Logger::Level level) {
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if ( level > NOOPT ) {
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level = limit(level);
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if ( mLevel != level )
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mLevel = level;
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mEffectiveLevel = NOLOG;
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if ( mTerminalLevel > mEffectiveLevel )
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mEffectiveLevel = mTerminalLevel;
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if ( mDatabaseLevel > mEffectiveLevel )
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mEffectiveLevel = mDatabaseLevel;
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if ( mFileLevel > mEffectiveLevel )
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mEffectiveLevel = mFileLevel;
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if ( mSyslogLevel > mEffectiveLevel )
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mEffectiveLevel = mSyslogLevel;
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if ( mEffectiveLevel > mLevel)
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mEffectiveLevel = mLevel;
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// DEBUG levels should flush
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if ( mLevel > INFO )
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mFlush = true;
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}
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return mLevel;
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}
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Logger::Level Logger::terminalLevel(Logger::Level terminalLevel) {
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if ( terminalLevel > NOOPT ) {
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if ( !mHasTerminal )
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terminalLevel = NOLOG;
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terminalLevel = limit(terminalLevel);
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if ( mTerminalLevel != terminalLevel )
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mTerminalLevel = terminalLevel;
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}
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return mTerminalLevel;
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}
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Logger::Level Logger::databaseLevel(Logger::Level databaseLevel) {
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if ( databaseLevel > NOOPT ) {
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databaseLevel = limit(databaseLevel);
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if ( mDatabaseLevel != databaseLevel ) {
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if ( (databaseLevel > NOLOG) && (mDatabaseLevel <= NOLOG) ) { // <= NOLOG would be NOOPT
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if ( !zmDbConnect() ) {
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databaseLevel = NOLOG;
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}
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} // end if ( databaseLevel > NOLOG && mDatabaseLevel <= NOLOG )
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mDatabaseLevel = databaseLevel;
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} // end if ( mDatabaseLevel != databaseLevel )
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} // end if ( databaseLevel > NOOPT )
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return mDatabaseLevel;
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}
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Logger::Level Logger::fileLevel(Logger::Level fileLevel) {
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if ( fileLevel > NOOPT ) {
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fileLevel = limit(fileLevel);
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// Always close, because we may have changed file names
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if ( mFileLevel > NOLOG )
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closeFile();
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mFileLevel = fileLevel;
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// Don't try to open it here because it will create the log file even if we never write to it.
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}
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return mFileLevel;
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}
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Logger::Level Logger::syslogLevel(Logger::Level syslogLevel) {
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if ( syslogLevel > NOOPT ) {
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syslogLevel = limit(syslogLevel);
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if ( mSyslogLevel != syslogLevel ) {
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if ( mSyslogLevel > NOLOG )
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closeSyslog();
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mSyslogLevel = syslogLevel;
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if ( mSyslogLevel > NOLOG )
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openSyslog();
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}
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}
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return mSyslogLevel;
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}
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void Logger::logFile(const std::string &logFile) {
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bool addLogPid = false;
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std::string tempLogFile = logFile;
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if ( tempLogFile[tempLogFile.length()-1] == '+' ) {
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tempLogFile.resize(tempLogFile.length()-1);
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addLogPid = true;
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}
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if ( addLogPid )
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mLogFile = stringtf("%s.%05d", tempLogFile.c_str(), getpid());
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else
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mLogFile = tempLogFile;
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}
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void Logger::openFile() {
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if ( mLogFile.size() ) {
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if ( (mLogFileFP = fopen(mLogFile.c_str(), "a")) == nullptr ) {
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mFileLevel = NOLOG;
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Error("fopen() for %s, error = %s", mLogFile.c_str(), strerror(errno));
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}
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} else {
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puts("Called Logger::openFile() without a filename");
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}
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}
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void Logger::closeFile() {
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if ( mLogFileFP ) {
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fflush(mLogFileFP);
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if ( fclose(mLogFileFP) < 0 ) {
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mLogFileFP = nullptr;
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Error("fclose(), error = %s", strerror(errno));
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}
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mLogFileFP = nullptr;
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}
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}
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void Logger::closeDatabase() {
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}
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void Logger::openSyslog() {
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(void) openlog(mId.c_str(), LOG_PID|LOG_NDELAY, LOG_LOCAL1);
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}
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void Logger::closeSyslog() {
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(void) closelog();
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}
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void Logger::logPrint(bool hex, const char * const filepath, const int line, const int level, const char *fstring, ...) {
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if ( level > mEffectiveLevel ) {
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return;
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}
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log_mutex.lock();
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char timeString[64];
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char logString[8192];
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va_list argPtr;
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struct timeval timeVal;
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char *filecopy = strdup(filepath);
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const char * const file = basename(filecopy);
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const char *classString = smCodes[level].c_str();
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if ( level < PANIC || level > DEBUG9 )
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Panic("Invalid logger level %d", level);
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gettimeofday(&timeVal, nullptr);
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#if 0
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if ( logRuntime ) {
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static struct timeval logStart;
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subtractTime( &timeVal, &logStart );
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snprintf( timeString, sizeof(timeString), "%ld.%03ld", timeVal.tv_sec, timeVal.tv_usec/1000 );
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} else {
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#endif
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char *timePtr = timeString;
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timePtr += strftime(timePtr, sizeof(timeString), "%x %H:%M:%S", localtime(&timeVal.tv_sec));
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snprintf(timePtr, sizeof(timeString)-(timePtr-timeString), ".%06ld", timeVal.tv_usec);
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#if 0
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}
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#endif
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pid_t tid;
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#ifdef __FreeBSD__
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long lwpid;
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thr_self(&lwpid);
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tid = lwpid;
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if ( tid < 0 ) // Thread/Process id
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#else
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#ifdef HAVE_SYSCALL
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#ifdef __FreeBSD_kernel__
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if ( (syscall(SYS_thr_self, &tid)) < 0 ) // Thread/Process id
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# else
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// SOLARIS doesn't have SYS_gettid; don't assume
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#ifdef SYS_gettid
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if ( (tid = syscall(SYS_gettid)) < 0 ) // Thread/Process id
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#endif // SYS_gettid
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#endif
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#endif // HAVE_SYSCALL
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#endif
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tid = getpid(); // Process id
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char *logPtr = logString;
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logPtr += snprintf(logPtr, sizeof(logString), "%s %s[%d].%s-%s/%d [",
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timeString,
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mId.c_str(),
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tid,
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classString,
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file,
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line
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);
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char *syslogStart = logPtr;
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va_start(argPtr, fstring);
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if ( hex ) {
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unsigned char *data = va_arg(argPtr, unsigned char *);
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int len = va_arg(argPtr, int);
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int i;
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logPtr += snprintf(logPtr, sizeof(logString)-(logPtr-logString), "%d:", len);
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for ( i = 0; i < len; i++ ) {
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logPtr += snprintf(logPtr, sizeof(logString)-(logPtr-logString), " %02x", data[i]);
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}
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} else {
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logPtr += vsnprintf(logPtr, sizeof(logString)-(logPtr-logString), fstring, argPtr);
|
|
}
|
|
va_end(argPtr);
|
|
char *syslogEnd = logPtr;
|
|
strncpy(logPtr, "]\n", sizeof(logString)-(logPtr-logString));
|
|
|
|
if ( level <= mTerminalLevel ) {
|
|
puts(logString);
|
|
fflush(stdout);
|
|
}
|
|
|
|
if ( level <= mFileLevel ) {
|
|
if ( !mLogFileFP ) {
|
|
// We do this here so that we only create the file if we ever write to it.
|
|
log_mutex.unlock();
|
|
openFile();
|
|
log_mutex.lock();
|
|
}
|
|
if ( mLogFileFP ) {
|
|
fputs(logString, mLogFileFP);
|
|
if ( mFlush )
|
|
fflush(mLogFileFP);
|
|
} else {
|
|
puts("Logging to file, but failed to open it\n");
|
|
}
|
|
} // end if level <= mFileLevel
|
|
|
|
if ( level <= mDatabaseLevel ) {
|
|
if ( !db_mutex.trylock() ) {
|
|
char escapedString[(strlen(syslogStart)*2)+1];
|
|
mysql_real_escape_string(&dbconn, escapedString, syslogStart, strlen(syslogStart));
|
|
|
|
char sql[ZM_SQL_MED_BUFSIZ];
|
|
snprintf(sql, sizeof(sql),
|
|
"INSERT INTO `Logs` "
|
|
"( `TimeKey`, `Component`, `ServerId`, `Pid`, `Level`, `Code`, `Message`, `File`, `Line` )"
|
|
" VALUES "
|
|
"( %ld.%06ld, '%s', %d, %d, %d, '%s', '%s', '%s', %d )",
|
|
timeVal.tv_sec, timeVal.tv_usec, mId.c_str(), staticConfig.SERVER_ID, tid, level, classString, escapedString, file, line
|
|
);
|
|
if ( mysql_query(&dbconn, sql) ) {
|
|
Level tempDatabaseLevel = mDatabaseLevel;
|
|
databaseLevel(NOLOG);
|
|
Error("Can't insert log entry: sql(%s) error(%s)", sql, mysql_error(&dbconn));
|
|
databaseLevel(tempDatabaseLevel);
|
|
}
|
|
db_mutex.unlock();
|
|
} else {
|
|
Level tempDatabaseLevel = mDatabaseLevel;
|
|
databaseLevel(NOLOG);
|
|
Error("Can't insert log entry: sql(%s) error(%s)", syslogStart, mysql_error(&dbconn));
|
|
databaseLevel(tempDatabaseLevel);
|
|
}
|
|
db_mutex.unlock();
|
|
} // end if level <= mDatabaseLevel
|
|
|
|
if ( level <= mSyslogLevel ) {
|
|
*syslogEnd = '\0';
|
|
syslog(smSyslogPriorities[level], "%s [%s] [%s]", classString, mId.c_str(), syslogStart);
|
|
}
|
|
|
|
free(filecopy);
|
|
log_mutex.unlock();
|
|
if ( level <= FATAL ) {
|
|
logTerm();
|
|
zmDbClose();
|
|
if ( level <= PANIC )
|
|
abort();
|
|
exit(-1);
|
|
}
|
|
} // end logPrint
|
|
|
|
void logInit(const char *name, const Logger::Options &options) {
|
|
if ( Logger::smInstance ) {
|
|
delete Logger::smInstance;
|
|
Logger::smInstance = nullptr;
|
|
}
|
|
|
|
Logger::smInstance = new Logger();
|
|
Logger::smInstance->initialise(name, options);
|
|
}
|
|
|
|
void logTerm() {
|
|
if ( Logger::smInstance ) {
|
|
delete Logger::smInstance;
|
|
Logger::smInstance = nullptr;
|
|
}
|
|
}
|