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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <dev@noladev.com> |
| 8 | * @copyright Copyright (c) 2009-2027 NOLA Interactive, LLC. |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Log\Writer; |
| 16 | |
| 17 | use Pop\Log\Facility; |
| 18 | use Pop\Log\Level; |
| 19 | |
| 20 | /** |
| 21 | * Syslog log writer class |
| 22 | * |
| 23 | * Builds a real RFC-3164 packet (<PRI>HEADER TAG: MSG) and sends it over UDP to a syslog |
| 24 | * daemon/collector. Does not use Logger's configurable timestampFormat — RFC-3164 mandates |
| 25 | * an exact HEADER timestamp shape, generated independently on every write. |
| 26 | * |
| 27 | * @category Pop |
| 28 | * @package Pop\Log |
| 29 | * @author Nick Sagona, III <dev@noladev.com> |
| 30 | * @copyright Copyright (c) 2009-2027 NOLA Interactive, LLC. |
| 31 | * @license https://www.popphp.org/license New BSD License |
| 32 | * @version 5.0.0 |
| 33 | */ |
| 34 | class Syslog extends AbstractWriter |
| 35 | { |
| 36 | |
| 37 | /** |
| 38 | * UDP socket resource |
| 39 | * @var mixed |
| 40 | */ |
| 41 | protected mixed $socket = null; |
| 42 | |
| 43 | /** |
| 44 | * Tag (program identifier) written into the syslog TAG field |
| 45 | * @var string |
| 46 | */ |
| 47 | protected string $tag; |
| 48 | |
| 49 | /** |
| 50 | * Hostname written into the syslog HEADER |
| 51 | * @var string |
| 52 | */ |
| 53 | protected string $hostname; |
| 54 | |
| 55 | /** |
| 56 | * Constructor |
| 57 | * |
| 58 | * Instantiate the syslog writer object |
| 59 | * |
| 60 | * @param Facility $facility |
| 61 | * @param string $host |
| 62 | * @param int $port |
| 63 | * @param ?string $tag |
| 64 | * @param ?string $hostname |
| 65 | * @param bool $includePid |
| 66 | * @throws Exception |
| 67 | */ |
| 68 | public function __construct( |
| 69 | protected Facility $facility = Facility::USER, |
| 70 | protected string $host = '127.0.0.1', |
| 71 | protected int $port = 514, |
| 72 | ?string $tag = null, |
| 73 | ?string $hostname = null, |
| 74 | protected bool $includePid = true |
| 75 | ) { |
| 76 | $this->tag = $tag ?? basename($_SERVER['SCRIPT_NAME'] ?? $_SERVER['argv'][0] ?? 'php'); |
| 77 | $this->hostname = $hostname ?? (gethostname() ?: 'localhost'); |
| 78 | |
| 79 | // RFC-3164 4.1.2/4.1.3: HOSTNAME must not contain whitespace, TAG must be <= 32 chars with no whitespace/control chars |
| 80 | $this->tag = substr(preg_replace('/[\s\x00-\x1F\x7F]+/', '', (string)$this->tag), 0, 32); |
| 81 | $this->hostname = preg_replace('/[\s\x00-\x1F\x7F]+/', '', (string)$this->hostname); |
| 82 | |
| 83 | $socket = @stream_socket_client('udp://' . $this->host . ':' . $this->port, $errno, $errstr); |
| 84 | |
| 85 | if ($socket === false) { |
| 86 | throw new Exception('Unable to open UDP socket to ' . $this->host . ':' . $this->port . ': ' . $errstr); |
| 87 | } |
| 88 | |
| 89 | $this->socket = $socket; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Get facility |
| 94 | * @return Facility |
| 95 | */ |
| 96 | public function getFacility(): Facility |
| 97 | { |
| 98 | return $this->facility; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Get tag |
| 103 | * @return string |
| 104 | */ |
| 105 | public function getTag(): string |
| 106 | { |
| 107 | return $this->tag; |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Get hostname |
| 112 | * @return string |
| 113 | */ |
| 114 | public function getHostname(): string |
| 115 | { |
| 116 | return $this->hostname; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Write to the log |
| 121 | * |
| 122 | * @param string $level |
| 123 | * @param string $message |
| 124 | * @param array $context |
| 125 | * @return Syslog |
| 126 | */ |
| 127 | public function writeLog(string $level, string $message, array $context = []): Syslog |
| 128 | { |
| 129 | if ($this->isWithinLogLimit($level)) { |
| 130 | $pri = ($this->facility->value * 8) + Level::toSeverity($level); |
| 131 | |
| 132 | // RFC-3164 HEADER timestamp: "Mmm dd hh:mm:ss" - day is space-padded, not zero-padded |
| 133 | $now = time(); |
| 134 | $timestamp = sprintf('%s %2d %s', date('M', $now), (int)date('j', $now), date('H:i:s', $now)); |
| 135 | |
| 136 | $tagPart = $this->tag . ($this->includePid ? '[' . getmypid() . ']' : ''); |
| 137 | $message = $this->sanitize($message); |
| 138 | $ctx = $this->sanitize($this->getContext($context)); |
| 139 | $body = $message . ($ctx !== '' ? ' ' . $ctx : ''); |
| 140 | |
| 141 | $packet = '<' . $pri . '>' . $timestamp . ' ' . $this->hostname . ' ' . $tagPart . ': ' . $body; |
| 142 | |
| 143 | if (strlen($packet) > 1024) { |
| 144 | $packet = mb_strcut($packet, 0, 1024); |
| 145 | } |
| 146 | |
| 147 | fwrite($this->socket, $packet); |
| 148 | } |
| 149 | |
| 150 | return $this; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Destructor |
| 155 | */ |
| 156 | public function __destruct() |
| 157 | { |
| 158 | if (is_resource($this->socket)) { |
| 159 | fclose($this->socket); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | } |