mirror of
https://github.com/irungentoo/toxcore.git
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ad26560516
- Any non-externally-visible declarations should be `static`. - Casting away the `const` qualifier from pointers-to-const is dangerous. All but one instance of this are now correct. The one instance where we can't keep `const` is one where toxav code actually writes to a chunk of memory marked as `const`. This code also assumes 4 byte alignment of data packets. I don't know whether that is a valid assumption, but it's likely unportable, and *not* obviously correct. - Replaced empty parameter lists with `(void)` to avoid passing parameters to it. Empty parameter lists are old style declarations for unknown number and type of arguments. - Commented out (as `#if DHT_HARDENING` block) the hardening code that was never executed. - Minor style fix: don't use `default` in enum-switches unless the number of enumerators in the default case is very large. In this case, it was 2, so we want to list them both explicitly to be warned about missing one if we add one in the future. - Removed the only two function declarations from nTox.h and put them into nTox.c. They are not used outside and nTox is not a library.
126 lines
2.6 KiB
C
126 lines
2.6 KiB
C
/* log.c
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*
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* Tox DHT bootstrap daemon.
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* Logging utility with support of multipel logging backends.
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*
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* Copyright (C) 2015-2016 Tox project All Rights Reserved.
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*
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* This file is part of Tox.
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*
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* Tox 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 3 of the License, or
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* (at your option) any later version.
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*
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* Tox 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 Tox. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "log.h"
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#include "global.h"
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#include <syslog.h>
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#include <stdarg.h>
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#include <stdio.h>
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LOG_BACKEND current_backend = -1;
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bool open_log(LOG_BACKEND backend)
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{
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if (current_backend != -1) {
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return false;
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}
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if (backend == LOG_BACKEND_SYSLOG) {
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openlog(DAEMON_NAME, LOG_NOWAIT | LOG_PID, LOG_DAEMON);
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}
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current_backend = backend;
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return true;
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}
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bool close_log(void)
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{
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if (current_backend == -1) {
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return false;
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}
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if (current_backend == LOG_BACKEND_SYSLOG) {
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closelog();
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}
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current_backend = -1;
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return true;
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}
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static int level_syslog(LOG_LEVEL level)
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{
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switch (level) {
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case LOG_LEVEL_INFO:
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return LOG_INFO;
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case LOG_LEVEL_WARNING:
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return LOG_WARNING;
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case LOG_LEVEL_ERROR:
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return LOG_ERR;
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}
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return LOG_INFO;
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}
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static void log_syslog(LOG_LEVEL level, const char *format, va_list args)
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{
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vsyslog(level_syslog(level), format, args);
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}
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static FILE *level_stdout(LOG_LEVEL level)
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{
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switch (level) {
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case LOG_LEVEL_INFO:
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return stdout;
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case LOG_LEVEL_WARNING: // intentional fallthrough
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case LOG_LEVEL_ERROR:
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return stderr;
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}
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return stdout;
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}
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static void log_stdout(LOG_LEVEL level, const char *format, va_list args)
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{
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vfprintf(level_stdout(level), format, args);
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fflush(level_stdout(level));
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}
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bool write_log(LOG_LEVEL level, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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switch (current_backend) {
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case LOG_BACKEND_SYSLOG:
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log_syslog(level, format, args);
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break;
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case LOG_BACKEND_STDOUT:
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log_stdout(level, format, args);
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break;
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}
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va_end(args);
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return current_backend != -1;
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}
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