1
0
mirror of https://github.com/billz/raspap-webgui.git synced 2023-10-10 13:37:24 +02:00
raspap-webgui/includes/wifi_functions.php
2021-04-30 17:24:45 +01:00

177 lines
6.3 KiB
PHP
Executable File
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?php
require_once 'functions.php';
function knownWifiStations(&$networks)
{
// Find currently configured networks
exec(' sudo cat ' . RASPI_WPA_SUPPLICANT_CONFIG, $known_return);
foreach ($known_return as $line) {
if (preg_match('/network\s*=/', $line)) {
$network = array('visible' => false, 'configured' => true, 'connected' => false);
} elseif (isset($network) && $network !== null) {
if (preg_match('/^\s*}\s*$/', $line)) {
$networks[$ssid] = $network;
$network = null;
$ssid = null;
} elseif ($lineArr = preg_split('/\s*=\s*/', trim($line))) {
switch (strtolower($lineArr[0])) {
case 'ssid':
$ssid = trim($lineArr[1], '"');
break;
case 'psk':
if (array_key_exists('passphrase', $network)) {
break;
}
case '#psk':
$network['protocol'] = 'WPA';
case 'wep_key0': // Untested
$network['passphrase'] = trim($lineArr[1], '"');
break;
case 'key_mgmt':
if (! array_key_exists('passphrase', $network) && $lineArr[1] === 'NONE') {
$network['protocol'] = 'Open';
}
break;
case 'priority':
$network['priority'] = trim($lineArr[1], '"');
break;
}
}
}
}
}
function nearbyWifiStations(&$networks, $cached = true)
{
$cacheTime = filemtime(RASPI_WPA_SUPPLICANT_CONFIG);
$cacheKey = "nearby_wifi_stations_$cacheTime";
if ($cached == false) {
deleteCache($cacheKey);
}
$scan_results = cache(
$cacheKey, function () {
exec('sudo wpa_cli -i ' .$_SESSION['wifi_client_interface']. ' scan');
sleep(3);
exec('sudo wpa_cli -i ' .$_SESSION['wifi_client_interface']. ' scan_results', $stdout);
array_shift($stdout);
return implode("\n", $stdout);
}
);
// get the name of the AP. Should be excluded from nearby networks
exec('cat '.RASPI_HOSTAPD_CONFIG.' | sed -rn "s/ssid=(.*)\s*$/\1/p" ', $ap_ssid);
$ap_ssid = $ap_ssid[0];
foreach (explode("\n", $scan_results) as $network) {
$arrNetwork = preg_split("/[\t]+/", $network); // split result into array
if (!array_key_exists(4, $arrNetwork) ||
trim($arrNetwork[4]) == $ap_ssid) {
continue;
}
$ssid = trim($arrNetwork[4]);
// filter SSID string: anything invisible in 7bit ASCII or quotes -> ignore network
if (preg_match('[\x00-\x1f\x7f-\xff\'\`\´\"]', $ssid)) {
continue;
}
// If network is saved
if (array_key_exists($ssid, $networks)) {
$networks[$ssid]['visible'] = true;
$networks[$ssid]['channel'] = ConvertToChannel($arrNetwork[1]);
// TODO What if the security has changed?
} else {
$networks[$ssid] = array(
'configured' => false,
'protocol' => ConvertToSecurity($arrNetwork[3]),
'channel' => ConvertToChannel($arrNetwork[1]),
'passphrase' => '',
'visible' => true,
'connected' => false
);
}
// Save RSSI, if the current value is larger than the already stored
if (array_key_exists(4, $arrNetwork) && array_key_exists($arrNetwork[4], $networks)) {
if (! array_key_exists('RSSI', $networks[$arrNetwork[4]]) || $networks[$ssid]['RSSI'] < $arrNetwork[2]) {
$networks[$ssid]['RSSI'] = $arrNetwork[2];
}
}
}
}
function connectedWifiStations(&$networks)
{
exec('iwconfig ' .$_SESSION['wifi_client_interface'], $iwconfig_return);
foreach ($iwconfig_return as $line) {
if (preg_match('/ESSID:\"([^"]+)\"/i', $line, $iwconfig_ssid)) {
$networks[$iwconfig_ssid[1]]['connected'] = true;
}
}
}
function sortNetworksByRSSI(&$networks)
{
$valRSSI = array();
foreach ($networks as $SSID => $net) {
if (!array_key_exists('RSSI', $net)) {
$net['RSSI'] = -1000;
}
$valRSSI[$SSID] = $net['RSSI'];
}
$nets = $networks;
arsort($valRSSI);
$networks = array();
foreach ($valRSSI as $SSID => $RSSI) {
$networks[$SSID] = $nets[$SSID];
$networks[$SSID]['RSSI'] = $RSSI;
}
}
/*
* Determines the configured wireless AP interface
*
* If not saved in /etc/raspap/hostapd.ini, check for a second
* wireless interface with iw dev. Fallback to the constant
* value defined in config.php
*/
function getWifiInterface()
{
$arrHostapdConf = parse_ini_file(RASPI_CONFIG.'/hostapd.ini');
$iface = $_SESSION['ap_interface'] = isset($arrHostapdConf['WifiInterface']) ? $arrHostapdConf['WifiInterface'] : RASPI_WIFI_AP_INTERFACE;
// check for 2nd wifi interface -> wifi client on different interface
exec("iw dev | awk '$1==\"Interface\" && $2!=\"$iface\" {print $2}'",$iface2);
$client_iface = $_SESSION['wifi_client_interface'] = (empty($iface2) ? $iface : trim($iface2[0]));
// specifically for rpi0W in AP-STA mode, the above check ends up with the interfaces
// crossed over (wifi_client_interface vs 'ap_interface'), because the second interface (uap0) is
// created by raspap and used as the access point.
if ($client_iface == "uap0" && ($arrHostapdConf['WifiAPEnable'] ?? 0)){
$_SESSION['wifi_client_interface'] = $iface;
$_SESSION['ap_interface'] = $client_iface;
}
}
/*
* Reinitializes wpa_supplicant for the wireless client interface
* The 'force' parameter deletes the socket in /var/run/wpa_supplicant/
*
* @param boolean $force
*/
function reinitializeWPA($force)
{
if ($force == true) {
$cmd = escapeshellcmd("sudo /bin/rm /var/run/wpa_supplicant/".$_SESSION['wifi_client_interface']);
$result = exec($cmd);
}
$cmd = escapeshellcmd("sudo /sbin/wpa_supplicant -B -Dnl80211 -c/etc/wpa_supplicant/wpa_supplicant.conf -i". $_SESSION['wifi_client_interface']);
$result = shell_exec($cmd);
return $result;
}