base.php

<?php

/**
 * The common stuff required by both index.php and build_html.php
 * this must be required_once
 */

if (defined('BASE_INITED')) return;
define('BASE_INITED', true);

if (!empty($argv[1])) {
	parse_str($argv[1], $_GET);
}

define('GIT_HASH', trim(shell_exec('git rev-parse --short HEAD')));

define('TIMEZONE', trim(shell_exec('date +%Z'))); // for replacements

$prod = defined('STDIN');
define('DEBUG', !$prod);

// Resolve hostname for ajax etc
$root = 'location.host';
if (!file_exists(__DIR__ . '/_env.php')) {
  if (DEBUG) {
    die("No _env.php found! Copy _env.php.example</b> to <b>_env.php</b> and check the settings inside!");
  }
} else {
  if (DEBUG) {
    require_once __DIR__ . '/_env.php';
    $root = json_encode(ESP_IP);
  }
}

define('JS_WEB_ROOT', $root);


define('ESP_PROD', (bool)getenv('ESP_PROD'));
define('ESP_DEMO', (bool)getenv('ESP_DEMO'));
if (ESP_DEMO) {
	define('DEMO_APS', <<<APS
{
 "result": {
  "inProgress": 0,
  "APs": [
   {"essid": "Cisco", "bssid": "88:f7:c7:52:b3:99", "rssi": 205, "rssi_perc": 100, "enc": 4, "channel": 7},
   {"essid": "UPC Wi-Free", "bssid": "8a:f7:c7:52:b3:9b", "rssi": 203, "rssi_perc": 100, "enc": 5, "channel": 1},
   {"essid": "UPC Wi-Free", "bssid": "0a:95:2a:0c:84:31", "rssi": 166, "rssi_perc": 32, "enc": 5, "channel": 1},
   {"essid": "MujO2Internet_2EEB96", "bssid": "d0:60:8c:2e:eb:96", "rssi": 174, "rssi_perc": 48, "enc": 4, "channel": 4},
   {"essid": "Internet", "bssid": "38:72:c0:32:bd:0d", "rssi": 164, "rssi_perc": 28, "enc": 2, "channel": 10},
   {"essid": "MyO2Internet_08C850", "bssid": "78:c1:a7:08:c8:50", "rssi": 186, "rssi_perc": 72, "enc": 4, "channel": 11},
   {"essid": "UPC Wi-Free", "bssid": "06:7c:34:9a:6f:7c", "rssi": 167, "rssi_perc": 34, "enc": 0, "channel": 11},
   {"essid": "Internet_B0", "bssid": "5c:f4:ab:11:3b:b3", "rssi": 175, "rssi_perc": 50, "enc": 3, "channel": 13},
   {"essid": "UPC5716805", "bssid": "08:95:2a:0c:84:3f", "rssi": 165, "rssi_perc": 30, "enc": 4, "channel": 1}
    ]
 }
}
APS
);
}

define('LOCALE', isset($_GET['locale']) ? $_GET['locale'] : (getenv('ESP_LANG') ?: 'en'));

$_messages = require(__DIR__ . '/lang/' . LOCALE . '.php');
$_messages_fallback = require(__DIR__ . '/lang/en.php');
$_messages_common = require(__DIR__ . '/lang/common.php');
$_pages = require(__DIR__ . '/_pages.php');

define('APP_NAME', 'ESPTerm');

/** URL (dev or production) */
function url($name, $relative = false)
{
	global $_pages;
	if ($relative) return $_pages[$name]->path;

	if (DEBUG) return "/index.php?page=$name";
	if (ESP_DEMO) return "$name.html";
	else return $_pages[$name]->path;
}

/** URL label for a button */
function label($name)
{
	global $_pages;
	return $_pages[$name]->label;
}

function e($s)
{
	return htmlspecialchars($s, ENT_HTML5 | ENT_QUOTES);
}

function je($s)
{
	return htmlspecialchars(json_encode($s), ENT_HTML5);
}


function tr($key)
{
	global $_messages, $_messages_fallback, $_messages_common;

	if (isset($_messages[$key])) {
		$str = $_messages[$key];
	}
	else if (isset($_messages_fallback[$key])) {
		$str = $_messages_fallback[$key];
	}
	else if (isset($_messages_common[$key])) {
		$str = $_messages_common[$key];
	}
	else{
		ob_end_clean();
		die('??' . $key . '??');
	}

	// allow tildes in translation
	$str = preg_replace('/(?<=[^ \\\\])~(?=[^ ])/', '&nbsp;', $str);
	$str = str_replace('\~', '~', $str);
	return $str;
}

/** Like eval, but allows <?php and ?> */
function include_str($code)
{
	$tmp = tmpfile();
	$tmpf = stream_get_meta_data($tmp);
	$tmpf = $tmpf ['uri'];
	fwrite($tmp, $code);
	$ret = include($tmpf);
	fclose($tmp);
	return $ret;
}

if (!function_exists('utf8')) {
	function utf8($num)
	{
		if($num<=0x7F)       return chr($num);
		if($num<=0x7FF)      return chr(($num>>6)+192).chr(($num&63)+128);
		if($num<=0xFFFF)     return chr(($num>>12)+224).chr((($num>>6)&63)+128).chr(($num&63)+128);
		if($num<=0x1FFFFF)   return chr(($num>>18)+240).chr((($num>>12)&63)+128).chr((($num>>6)&63)+128).chr(($num&63)+128);
		return '';
	}
}

if (!function_exists('load_esp_charsets')) {
	function load_esp_charsets() {
		$chsf = __DIR__ . '/../user/character_sets.h';

		if (! file_exists($chsf)) {
			return [
				'!! ERROR: `../user/character_sets.h` not found !!' => [
					'start' => 65,
					'chars' => ['&'],
				],
			];
		}

		$re_table = '/\/\/ %%BEGIN:(.)%%\s*(.*?)\s*\/\/ %%END:\1%%/s';
		preg_match_all($re_table, file_get_contents($chsf), $m_tbl);

		$re_bounds = '/#define CODEPAGE_(.)_BEGIN\s+(\d+)\n#define CODEPAGE_\1_END\s+(\d+)/';
		preg_match_all($re_bounds, file_get_contents($chsf), $m_bounds);

		$cps = [];

		foreach ($m_tbl[2] as $i => $str) {
			$name = $m_tbl[1][$i];
			$start = intval($m_bounds[2][$i]);
			$table = [];
			$str = preg_replace('/,\s*\/\/[^\n]*/', '', $str);
			$rows = explode("\n", $str);
			$rows = array_map('trim', $rows);

			foreach($rows as $j => $v) {
				$literal = false;
				if (strpos($v, '0x') === 0) {
					// hexa codes
					$v = substr($v, 2);
					$v = hexdec($v);
				}  else if (strpos($v, 'u\'\\0\'') === 0) {
					// zero
					$v = 0;
				} else if (strpos($v, 'u\'') === 0) {
					// utf8 literals
					$v = mb_substr($v, 2, 1, 'utf-8');
					$literal = true;
				} else {
					$v = intval($v);
				}
				$ascii = $start+$j;
				$table[] = $literal ? $v : utf8($v==0? $ascii :$v);
			}

			$obj = [
				'start' => $start,
				'chars' => $table,
			];

			$cps[$name] = $obj;
		}
		return $cps;
	}
}

if (!function_exists('tplSubs')) {
	function tplSubs($str, $reps)
	{
		return preg_replace_callback('/%(j:|js:|h:|html:)?([a-z0-9-_.]+)%/i', function ($m) use ($reps) {
			$key = $m[2];
			if (array_key_exists($key, $reps)) {
				$val = $reps[$key];
			} else {
				$val = '';
			}
			switch ($m[1]) {
				case 'j:':
				case 'js:':
					$v = json_encode($val);
					return substr($v, 1, strlen($v) - 2);
				case 'h:':
				case 'html:':
					return htmlspecialchars($val);
				default:
					return $val;
			}
		}, $str);
	}
}