195 lines
3.6 KiB
C++
195 lines
3.6 KiB
C++
/*
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* Copyright 2003-2017 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "LogBackend.hxx"
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#include "Log.hxx"
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#include "util/Domain.hxx"
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#include "util/StringUtil.hxx"
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#ifdef HAVE_SYSLOG
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#include <syslog.h>
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#endif
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#ifdef ANDROID
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#include <android/log.h>
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static int
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ToAndroidLogLevel(LogLevel log_level)
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{
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switch (log_level) {
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case LogLevel::DEBUG:
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return ANDROID_LOG_DEBUG;
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case LogLevel::INFO:
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case LogLevel::DEFAULT:
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return ANDROID_LOG_INFO;
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case LogLevel::WARNING:
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return ANDROID_LOG_WARN;
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case LogLevel::ERROR:
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return ANDROID_LOG_ERROR;
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}
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assert(false);
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gcc_unreachable();
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}
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#else
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static LogLevel log_threshold = LogLevel::INFO;
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static bool enable_timestamp;
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#ifdef HAVE_SYSLOG
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static bool enable_syslog;
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#endif
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void
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SetLogThreshold(LogLevel _threshold)
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{
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log_threshold = _threshold;
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}
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void
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EnableLogTimestamp()
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{
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#ifdef HAVE_SYSLOG
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assert(!enable_syslog);
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#endif
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assert(!enable_timestamp);
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enable_timestamp = true;
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}
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static const char *log_date(void)
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{
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static constexpr size_t LOG_DATE_BUF_SIZE = 16;
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static char buf[LOG_DATE_BUF_SIZE];
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time_t t = time(nullptr);
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strftime(buf, LOG_DATE_BUF_SIZE, "%b %d %H:%M : ", localtime(&t));
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return buf;
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}
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/**
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* Determines the length of the string excluding trailing whitespace
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* characters.
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*/
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static int
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chomp_length(const char *p)
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{
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size_t length = strlen(p);
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return StripRight(p, length);
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}
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#ifdef HAVE_SYSLOG
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static int
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ToSysLogLevel(LogLevel log_level)
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{
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switch (log_level) {
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case LogLevel::DEBUG:
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return LOG_DEBUG;
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case LogLevel::INFO:
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return LOG_INFO;
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case LogLevel::DEFAULT:
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return LOG_NOTICE;
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case LogLevel::WARNING:
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return LOG_WARNING;
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case LogLevel::ERROR:
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return LOG_ERR;
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}
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assert(false);
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gcc_unreachable();
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}
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static void
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SysLog(const Domain &domain, LogLevel log_level, const char *message)
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{
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syslog(ToSysLogLevel(log_level), "%s: %.*s",
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domain.GetName(),
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chomp_length(message), message);
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}
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void
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LogInitSysLog()
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{
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openlog(PACKAGE, 0, LOG_DAEMON);
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enable_syslog = true;
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}
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void
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LogFinishSysLog()
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{
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if (enable_syslog)
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closelog();
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}
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#endif
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static void
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FileLog(const Domain &domain, const char *message)
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{
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fprintf(stderr, "%s%s: %.*s\n",
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enable_timestamp ? log_date() : "",
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domain.GetName(),
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chomp_length(message), message);
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#ifdef _WIN32
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/* force-flush the log file, because setvbuf() does not seem
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to have an effect on WIN32 */
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fflush(stderr);
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#endif
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}
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#endif /* !ANDROID */
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void
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Log(const Domain &domain, LogLevel level, const char *msg)
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{
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#ifdef ANDROID
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__android_log_print(ToAndroidLogLevel(level), "MPD",
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"%s: %s", domain.GetName(), msg);
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#else
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if (level < log_threshold)
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return;
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#ifdef HAVE_SYSLOG
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if (enable_syslog) {
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SysLog(domain, level, msg);
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return;
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}
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#endif
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FileLog(domain, msg);
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#endif /* !ANDROID */
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}
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