// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !windows && !plan9

package syslog

import (
	"errors"
	"fmt"
	"log"
	"net"
	"os"
	"strings"
	"sync"
	"time"
)

// The Priority is a combination of the syslog facility and
// severity. For example, [LOG_ALERT] | [LOG_FTP] sends an alert severity

		t.Fatalf("LOG_LOCAL7 has wrong value")
	}
	if testing.Short() {
		// Depends on syslog daemon running, and sometimes it's not.
		t.Skip("skipping syslog test during -short")
	}

	s, err := New(LOG_INFO|LOG_USER, "the_tag")
	if err != nil {
		if err.Error() == "Unix syslog delivery error" {
			t.Skip("skipping: syslogd not running")
		}
		t.Fatalf("New() failed: %s", err)
	}
	// Don't send any messages.

pkg log/syslog (freebsd-arm64), const LOG_ERR = 3
pkg log/syslog (freebsd-arm64), const LOG_ERR Priority
pkg log/syslog (freebsd-arm64), const LOG_FTP = 88
pkg log/syslog (freebsd-arm64), const LOG_FTP Priority
pkg log/syslog (freebsd-arm64), const LOG_INFO = 6
pkg log/syslog (freebsd-arm64), const LOG_INFO Priority
pkg log/syslog (freebsd-arm64), const LOG_KERN = 0
pkg log/syslog (freebsd-arm64), const LOG_KERN Priority

pkg log/syslog (darwin-arm64), const LOG_ERR = 3
pkg log/syslog (darwin-arm64), const LOG_ERR Priority
pkg log/syslog (darwin-arm64), const LOG_FTP = 88
pkg log/syslog (darwin-arm64), const LOG_FTP Priority
pkg log/syslog (darwin-arm64), const LOG_INFO = 6
pkg log/syslog (darwin-arm64), const LOG_INFO Priority
pkg log/syslog (darwin-arm64), const LOG_KERN = 0
pkg log/syslog (darwin-arm64), const LOG_KERN Priority

pkg log/syslog (freebsd-riscv64), const LOG_EMERG = 0 #53466
pkg log/syslog (freebsd-riscv64), const LOG_EMERG Priority #53466
pkg log/syslog (freebsd-riscv64), const LOG_ERR = 3 #53466
pkg log/syslog (freebsd-riscv64), const LOG_ERR Priority #53466
pkg log/syslog (freebsd-riscv64), const LOG_FTP = 88 #53466
pkg log/syslog (freebsd-riscv64), const LOG_FTP Priority #53466
pkg log/syslog (freebsd-riscv64), const LOG_INFO = 6 #53466

- Set: `values.global.logging.level="cni:debug,ambient:debug"`
- Inspect the pod logs of a `istio-cni` Daemonset pod on a specific node.

#### From a specific node syslog

The CNI plugins are executed by threads in the `kubelet` process.  The CNI plugins logs end up the syslog
under the `kubelet` process. On systems with `journalctl` the following is an example command line

	FMT, log/internal
	< log;

	log, log/slog !< crypto/tls, database/sql, go/importer, testing;

	FMT, log, net
	< log/syslog;

	RUNTIME
	< log/slog/internal, log/slog/internal/buffer;

	FMT,
	encoding, encoding/json,
	log, log/internal,
	log/slog/internal, log/slog/internal/buffer,
	slices
	< log/slog
	< log/slog/internal/slogtest, log/slog/internal/benchmarks;

	NET, log
	< net/mail;

[PARSER]
    Name        syslog-rfc5424
    Format      regex
    Regex       ^\<(?<pri>[0-9]{1,5})\>1 (?<time>[^ ]+) (?<host>[^ ]+) (?<ident>[^ ]+) (?<pid>[-0-9]+) (?<msgid>[^ ]+) (?<extradata>(\[(.*?)\]|-)) (?<message>.+)$
    Time_Key    time
    Time_Format %Y-%m-%dT%H:%M:%S.%L%z
    Time_Keep   On

[PARSER]
    Name        syslog-rfc3164-local
    Format      regex

int fdatasync(int);
int getpgid(int);
int getpgrp();
int getpid();
int getppid();
int getpriority(int, int);
int getrusage(int, uintptr_t);
int getsid(int);
int kill(int, int);
int syslog(int, uintptr_t, size_t);
int mkdir(int, uintptr_t, unsigned int);
int mkdirat(int, uintptr_t, unsigned int);
int mkfifo(uintptr_t, unsigned int);
int mknod(uintptr_t, unsigned int, int);

//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Kill(pid int, sig Signal) (err error)
//sys	Klogctl(typ int, buf []byte) (n int, err error) = syslog
//sys	Mkdir(dirfd int, path string, mode uint32) (err error)
//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)