101 lines
3.4 KiB
PHP
Executable File
101 lines
3.4 KiB
PHP
Executable File
<?php
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require_once 'functions.php';
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function knownWifiStations(&$networks)
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{
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// Find currently configured networks
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exec(' sudo cat ' . RASPI_WPA_SUPPLICANT_CONFIG, $known_return);
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foreach ($known_return as $line) {
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if (preg_match('/network\s*=/', $line)) {
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$network = array('visible' => false, 'configured' => true, 'connected' => false);
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} elseif ($network !== null) {
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if (preg_match('/^\s*}\s*$/', $line)) {
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$networks[$ssid] = $network;
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$network = null;
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$ssid = null;
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} elseif ($lineArr = preg_split('/\s*=\s*/', trim($line))) {
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switch (strtolower($lineArr[0])) {
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case 'ssid':
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$ssid = trim($lineArr[1], '"');
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break;
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case 'psk':
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if (array_key_exists('passphrase', $network)) {
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break;
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}
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case '#psk':
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$network['protocol'] = 'WPA';
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case 'wep_key0': // Untested
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$network['passphrase'] = trim($lineArr[1], '"');
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break;
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case 'key_mgmt':
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if (! array_key_exists('passphrase', $network) && $lineArr[1] === 'NONE') {
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$network['protocol'] = 'Open';
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}
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break;
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case 'priority':
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$network['priority'] = trim($lineArr[1], '"');
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break;
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}
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}
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}
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}
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}
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function nearbyWifiStations(&$networks, $cached = true)
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{
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$cacheTime = filemtime(RASPI_WPA_SUPPLICANT_CONFIG);
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$cacheKey = "nearby_wifi_stations_$cacheTime";
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if ($cached == false) {
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deleteCache($cacheKey);
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}
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$scan_results = cache(
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$cacheKey, function () {
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exec('sudo wpa_cli -i ' . RASPI_WIFI_CLIENT_INTERFACE . ' scan');
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sleep(3);
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exec('sudo wpa_cli -i ' . RASPI_WIFI_CLIENT_INTERFACE . ' scan_results', $stdout);
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array_shift($stdout);
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return implode("\n", $stdout);
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}
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);
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foreach (explode("\n", $scan_results) as $network) {
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$arrNetwork = preg_split("/[\t]+/", $network); // split result into array
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// If network is saved
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if (array_key_exists(4, $arrNetwork) && array_key_exists($arrNetwork[4], $networks)) {
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$networks[$arrNetwork[4]]['visible'] = true;
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$networks[$arrNetwork[4]]['channel'] = ConvertToChannel($arrNetwork[1]);
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// TODO What if the security has changed?
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} else {
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$networks[$arrNetwork[4]] = array(
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'configured' => false,
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'protocol' => ConvertToSecurity($arrNetwork[3]),
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'channel' => ConvertToChannel($arrNetwork[1]),
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'passphrase' => '',
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'visible' => true,
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'connected' => false
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);
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}
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// Save RSSI
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if (array_key_exists(4, $arrNetwork)) {
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$networks[$arrNetwork[4]]['RSSI'] = $arrNetwork[2];
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}
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}
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}
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function connectedWifiStations(&$networks)
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{
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exec('iwconfig ' . RASPI_WIFI_CLIENT_INTERFACE, $iwconfig_return);
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foreach ($iwconfig_return as $line) {
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if (preg_match('/ESSID:\"([^"]+)\"/i', $line, $iwconfig_ssid)) {
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$networks[$iwconfig_ssid[1]]['connected'] = true;
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}
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}
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}
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