mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-23 08:00:20 +00:00
139 lines
3.7 KiB
C++
139 lines
3.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
// Has to be defined before including due to legacy Unices
|
|
#define SYSLOG_NAMES 1
|
|
|
|
#include <AK/String.h>
|
|
#include <AK/StringBuilder.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
#include <unistd.h>
|
|
|
|
// This implementation doesn't talk to a syslog server. Any options related to
|
|
// that are no-ops.
|
|
|
|
extern "C" {
|
|
|
|
// For implementation simplicity, we actually only use the re-entrant version
|
|
// of each function, and the version that isn't just redirects with a static
|
|
// struct to share.
|
|
static struct syslog_data global_log_data = {
|
|
.ident = nullptr,
|
|
.logopt = 0,
|
|
.facility = LOG_USER,
|
|
.maskpri = LOG_UPTO(LOG_DEBUG)
|
|
};
|
|
|
|
// Used when ident is null, since syslog traditionally prints the program's
|
|
// own name; the process name will always be the same unless we exec.
|
|
static char program_name_buffer[256];
|
|
static bool program_name_set = false;
|
|
|
|
// Convenience function for initialization and checking what string to use
|
|
// for the program name.
|
|
static char const* get_syslog_ident(struct syslog_data* data)
|
|
{
|
|
if (!program_name_set && data->ident == nullptr)
|
|
program_name_set = get_process_name(program_name_buffer, sizeof(program_name_buffer)) >= 0;
|
|
|
|
if (data->ident != nullptr)
|
|
return data->ident;
|
|
else if (program_name_set)
|
|
return program_name_buffer;
|
|
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
void openlog_r(char const* ident, int logopt, int facility, struct syslog_data* data)
|
|
{
|
|
data->ident = ident;
|
|
data->logopt = logopt;
|
|
data->facility = facility;
|
|
// default value
|
|
data->maskpri = LOG_UPTO(LOG_DEBUG);
|
|
// would be where we connect to a daemon
|
|
}
|
|
|
|
void openlog(char const* ident, int logopt, int facility)
|
|
{
|
|
openlog_r(ident, logopt, facility, &global_log_data);
|
|
}
|
|
|
|
void closelog_r(struct syslog_data* data)
|
|
{
|
|
// would be where we disconnect from a daemon
|
|
// restore defaults
|
|
data->ident = nullptr;
|
|
data->logopt = 0;
|
|
data->facility = LOG_USER;
|
|
data->maskpri = LOG_UPTO(LOG_DEBUG);
|
|
}
|
|
|
|
void closelog(void)
|
|
{
|
|
closelog_r(&global_log_data);
|
|
}
|
|
|
|
int setlogmask_r(int maskpri, struct syslog_data* data)
|
|
{
|
|
// Remember, this takes the input of LOG_MASK/LOG_UPTO
|
|
int old_maskpri = data->maskpri;
|
|
data->maskpri = maskpri;
|
|
return old_maskpri;
|
|
}
|
|
|
|
int setlogmask(int maskpri)
|
|
{
|
|
return setlogmask_r(maskpri, &global_log_data);
|
|
}
|
|
|
|
void syslog_r(int priority, struct syslog_data* data, char const* message, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, message);
|
|
vsyslog_r(priority, data, message, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
void syslog(int priority, char const* message, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, message);
|
|
vsyslog_r(priority, &global_log_data, message, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
void vsyslog_r(int priority, struct syslog_data* data, char const* message, va_list args)
|
|
{
|
|
StringBuilder combined;
|
|
|
|
int real_priority = LOG_PRI(priority);
|
|
// Lots of parens, but it just extracts the priority from combo and masks.
|
|
if (!(data->maskpri & LOG_MASK(real_priority)))
|
|
return;
|
|
|
|
// Some metadata would be consumed by a syslog daemon, if we had one.
|
|
if (data->logopt & LOG_PID)
|
|
combined.appendff("{}[{}]: ", get_syslog_ident(data), getpid());
|
|
else
|
|
combined.appendff("{}: ", get_syslog_ident(data));
|
|
|
|
combined.appendvf(message, args);
|
|
String combined_string = combined.build();
|
|
|
|
if (data->logopt & LOG_CONS)
|
|
dbgputstr(combined_string.characters(), combined_string.length());
|
|
if (data->logopt & LOG_PERROR)
|
|
fputs(combined_string.characters(), stderr);
|
|
}
|
|
|
|
void vsyslog(int priority, char const* message, va_list args)
|
|
{
|
|
vsyslog_r(priority, &global_log_data, message, args);
|
|
}
|
|
}
|