mirror of
https://github.com/billz/raspap-webgui.git
synced 2025-03-01 10:31:47 +00:00
320 lines
10 KiB
PHP
Executable File
320 lines
10 KiB
PHP
Executable File
<?php
|
||
|
||
require_once 'functions.php';
|
||
|
||
const MIN_RSSI = -100;
|
||
const MAX_RSSI = -55;
|
||
|
||
function knownWifiStations(&$networks)
|
||
{
|
||
// Find currently configured networks
|
||
exec(' sudo cat ' . RASPI_WPA_SUPPLICANT_CONFIG, $known_return);
|
||
//$index = 0;
|
||
foreach ($known_return as $line) {
|
||
if (preg_match('/network\s*=/', $line)) {
|
||
$network = array('visible' => false, 'configured' => true, 'connected' => false, 'index' => null);
|
||
++$index;
|
||
} 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($line), 2)) {
|
||
switch (strtolower($lineArr[0])) {
|
||
case 'ssid':
|
||
$ssid = trim($lineArr[1], '"');
|
||
$ssid = str_replace('P"','',$ssid);
|
||
$network['ssid'] = $ssid;
|
||
$index = getNetworkIdBySSID($ssid);
|
||
$network['index'] = $index;
|
||
break;
|
||
case 'psk':
|
||
$network['passkey'] = trim($lineArr[1]);
|
||
$network['protocol'] = 'WPA';
|
||
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);
|
||
$stdout = shell_exec('sudo wpa_cli -i ' .$_SESSION['wifi_client_interface']. ' scan_results');
|
||
return preg_split("/\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];
|
||
|
||
$index = 0;
|
||
if ( !empty($networks) ) {
|
||
$lastnet = end($networks);
|
||
if ( isset($lastnet['index']) ) $index = $lastnet['index'] + 1;
|
||
}
|
||
|
||
if (is_array($scan_results)) {
|
||
array_shift($scan_results);
|
||
foreach ($scan_results as $network) {
|
||
$arrNetwork = preg_split("/[\t]+/", $network); // split result into array
|
||
$ssid = $arrNetwork[4];
|
||
|
||
// exclude raspap ssid
|
||
if (empty($ssid) || $ssid == $ap_ssid) {
|
||
continue;
|
||
}
|
||
|
||
// filter SSID string: unprintable 7bit ASCII control codes, delete or quotes -> ignore network
|
||
if (preg_match('[\x00-\x1f\x7f\'\`\´\"]', $ssid)) {
|
||
continue;
|
||
}
|
||
|
||
// If network is saved
|
||
if (array_key_exists($ssid, $networks)) {
|
||
$networks[$ssid]['visible'] = true;
|
||
$networks[$ssid]['channel'] = ConvertToChannel($arrNetwork[1]);
|
||
// TODO What if the security has changed?
|
||
} else {
|
||
$networks[$ssid] = array(
|
||
'ssid' => $ssid,
|
||
'configured' => false,
|
||
'protocol' => ConvertToSecurity($arrNetwork[3]),
|
||
'channel' => ConvertToChannel($arrNetwork[1]),
|
||
'passphrase' => '',
|
||
'visible' => true,
|
||
'connected' => false,
|
||
'index' => $index
|
||
);
|
||
++$index;
|
||
}
|
||
|
||
// 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)) {
|
||
$networks[hexSequence2lower($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)
|
||
{
|
||
$iface = escapeshellarg($_SESSION['wifi_client_interface']);
|
||
if ($force == true) {
|
||
$cmd = "sudo /bin/rm /var/run/wpa_supplicant/$iface";
|
||
$result = shell_exec($cmd);
|
||
}
|
||
$cmd = "sudo wpa_cli -i $iface reconfigure";
|
||
$result = shell_exec($cmd);
|
||
sleep(1);
|
||
return $result;
|
||
}
|
||
|
||
/*
|
||
* Replace escaped bytes (hex) by binary - assume UTF8 encoding
|
||
*
|
||
* @param string $ssid
|
||
*/
|
||
function ssid2utf8($ssid)
|
||
{
|
||
return evalHexSequence($ssid);
|
||
}
|
||
|
||
/*
|
||
* Returns a signal strength indicator based on RSSI value
|
||
*
|
||
* @param string $rssi
|
||
*/
|
||
function getSignalBars($rssi)
|
||
{
|
||
// assign css class based on RSSI value
|
||
if ($rssi >= MAX_RSSI) {
|
||
$class = 'strong';
|
||
} elseif ($rssi >= -56) {
|
||
$class = 'medium';
|
||
} elseif ($rssi >= -67) {
|
||
$class = 'weak';
|
||
} elseif ($rssi >= -89) {
|
||
$class = '';
|
||
}
|
||
|
||
// calculate percent strength
|
||
if ($rssi >= -50) {
|
||
$pct = 100;
|
||
} elseif ($rssi <= MIN_RSSI) {
|
||
$pct = 0;
|
||
} else {
|
||
$pct = 2*($rssi + 100);
|
||
}
|
||
$elem = '<div data-toggle="tooltip" title="' . _("Signal strength"). ': ' .$pct. '%" class="signal-icon ' .$class. '">'.PHP_EOL;
|
||
for ($n = 0; $n < 3; $n++ ) {
|
||
$elem .= '<div class="signal-bar"></div>'.PHP_EOL;
|
||
}
|
||
$elem .= '</div>'.PHP_EOL;
|
||
return $elem;
|
||
}
|
||
|
||
/*
|
||
* Parses output of wpa_cli list_networks, compares with known networks
|
||
* from wpa_supplicant, and adds with wpa_cli if not found
|
||
*
|
||
* @param array $networks
|
||
*/
|
||
function setKnownStationsWPA($networks)
|
||
{
|
||
$iface = escapeshellarg($_SESSION['wifi_client_interface']);
|
||
$output = shell_exec("sudo wpa_cli -i $iface list_networks");
|
||
$lines = explode("\n", $output);
|
||
array_shift($lines);
|
||
$wpaCliNetworks = [];
|
||
|
||
foreach ($lines as $line) {
|
||
$data = explode("\t", trim($line));
|
||
if (!empty($data) && count($data) >= 2) {
|
||
$id = $data[0];
|
||
$ssid = $data[1];
|
||
$item = [
|
||
'id' => $id,
|
||
'ssid' => $ssid
|
||
];
|
||
$wpaCliNetworks[] = $item;
|
||
}
|
||
}
|
||
foreach ($networks as $network) {
|
||
$ssid = $network['ssid'];
|
||
if (!networkExists($ssid, $wpaCliNetworks)) {
|
||
$ssid = escapeshellarg('"'.$network['ssid'].'"');
|
||
$psk = escapeshellarg('"'.$network['passphrase'].'"');
|
||
$netid = trim(shell_exec("sudo wpa_cli -i $iface add_network"));
|
||
if (isset($netid) && !isset($known[$netid])) {
|
||
$commands = [
|
||
"sudo wpa_cli -i $iface set_network $netid ssid $ssid",
|
||
"sudo wpa_cli -i $iface set_network $netid psk $psk",
|
||
"sudo wpa_cli -i $iface enable_network $netid"
|
||
];
|
||
foreach ($commands as $cmd) {
|
||
exec($cmd);
|
||
usleep(1000);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Parses wpa_cli list_networks output and returns the id
|
||
* of a corresponding network SSID
|
||
*
|
||
* @param string $ssid
|
||
* @return integer id
|
||
*/
|
||
function getNetworkIdBySSID($ssid) {
|
||
$iface = escapeshellarg($_SESSION['wifi_client_interface']);
|
||
$cmd = "sudo wpa_cli -i $iface list_networks";
|
||
$output = [];
|
||
exec($cmd, $output);
|
||
array_shift($output);
|
||
foreach ($output as $line) {
|
||
$columns = preg_split('/\t/', $line);
|
||
if (count($columns) >= 4 && trim($columns[1]) === trim($ssid)) {
|
||
return $columns[0]; // return network ID
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
|
||
function networkExists($ssid, $collection)
|
||
{
|
||
foreach ($collection as $network) {
|
||
if ($network['ssid'] === $ssid) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|