Merge pull request #387 from glaszig/fix/wifi-stations

restore configuration of multiple networks

ajax/networking/wifi_stations.php

@@ -3,92 +3,14 @@
 require('../../includes/csrf.php');
 include_once('../../includes/config.php');
 include_once('../../includes/functions.php');
+include_once('../../includes/wifi_functions.php');
 
-$cacheTime = filemtime(RASPI_WPA_SUPPLICANT_CONFIG);
+$networks = [];
-$cacheKey  = "wifi_stations_$cacheTime";
+$network  = null;
+$ssid     = null;
 
-if (isset($_REQUEST["refresh"])) {
+knownWifiStations($networks);
-    deleteCache($cacheKey);
+nearbyWifiStations($networks, !isset($_REQUEST["refresh"]));
-}
+connectedWifiStations($networks);
 
-echo cache($cacheKey, function() {
+echo renderTemplate('wifi_stations', compact('networks'));
-    $networks = [];
-    $network  = null;
-    $ssid     = null;
-
-    // Find currently configured networks
-    exec(' sudo cat ' . RASPI_WPA_SUPPLICANT_CONFIG, $known_return);
-    foreach ($known_return as $line) {
-        if (preg_match('/network\s*=/', $line)) {
-            $network = array('visible' => false, 'configured' => true, 'connected' => false);
-        } elseif ($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;
-                }
-            }
-        }
-    }
-
-    exec('sudo wpa_cli -i ' . RASPI_WIFI_CLIENT_INTERFACE . ' scan');
-    sleep(3);
-    exec('sudo wpa_cli -i ' . RASPI_WIFI_CLIENT_INTERFACE . ' scan_results', $scan_return);
-    array_shift($scan_return);
-
-    foreach ($scan_return as $network) {
-        $arrNetwork = preg_split("/[\t]+/", $network);  // split result into array
-
-        // If network is saved
-        if (array_key_exists(4, $arrNetwork) && array_key_exists($arrNetwork[4], $networks)) {
-            $networks[$arrNetwork[4]]['visible'] = true;
-            $networks[$arrNetwork[4]]['channel'] = ConvertToChannel($arrNetwork[1]);
-            // TODO What if the security has changed?
-        } else {
-            $networks[$arrNetwork[4]] = array(
-                'configured' => false,
-                'protocol' => ConvertToSecurity($arrNetwork[3]),
-                'channel' => ConvertToChannel($arrNetwork[1]),
-                'passphrase' => '',
-                'visible' => true,
-                'connected' => false
-            );
-        }
-
-        // Save RSSI
-        if (array_key_exists(4, $arrNetwork)) {
-            $networks[$arrNetwork[4]]['RSSI'] = $arrNetwork[2];
-        }
-    }
-
-    exec('iwconfig ' . RASPI_WIFI_CLIENT_INTERFACE, $iwconfig_return);
-    foreach ($iwconfig_return as $line) {
-        if (preg_match('/ESSID:\"([^"]+)\"/i', $line, $iwconfig_ssid)) {
-            $networks[$iwconfig_ssid[1]]['connected'] = true;
-        }
-    }
-
-    return renderTemplate('wifi_stations', compact('networks'));
-});

includes/configure_client.php

@@ -1,5 +1,8 @@
 <?php
 
+include_once('includes/status_messages.php');
+include_once('includes/wifi_functions.php');
+
 /**
 *
 *
@@ -7,6 +10,9 @@
 function DisplayWPAConfig()
 {
     $status = new StatusMessages();
+    $networks = [];
+
+    knownWifiStations($networks);
 
     if (isset($_POST['connect'])) {
         $result = 0;
@@ -86,6 +92,9 @@ function DisplayWPAConfig()
         }
     }
 
+    nearbyWifiStations($networks);
+    connectedWifiStations($networks);
+
 ?>
 
   <div class="row">

includes/wifi_functions.php

@@ -0,0 +1,98 @@
+<?php
+
+include_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)) {
+            $network = array('visible' => false, 'configured' => true, 'connected' => false);
+        } elseif ($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 ' . RASPI_WIFI_CLIENT_INTERFACE . ' scan');
+        sleep(3);
+
+        exec('sudo wpa_cli -i ' . RASPI_WIFI_CLIENT_INTERFACE . ' scan_results', $stdout);
+        array_shift($stdout);
+
+        return implode("\n", $stdout);
+    });
+
+    foreach (explode("\n", $scan_results) as $network) {
+        $arrNetwork = preg_split("/[\t]+/", $network);  // split result into array
+
+        // If network is saved
+        if (array_key_exists(4, $arrNetwork) && array_key_exists($arrNetwork[4], $networks)) {
+            $networks[$arrNetwork[4]]['visible'] = true;
+            $networks[$arrNetwork[4]]['channel'] = ConvertToChannel($arrNetwork[1]);
+            // TODO What if the security has changed?
+        } else {
+            $networks[$arrNetwork[4]] = array(
+                'configured' => false,
+                'protocol' => ConvertToSecurity($arrNetwork[3]),
+                'channel' => ConvertToChannel($arrNetwork[1]),
+                'passphrase' => '',
+                'visible' => true,
+                'connected' => false
+            );
+        }
+
+        // Save RSSI
+        if (array_key_exists(4, $arrNetwork)) {
+            $networks[$arrNetwork[4]]['RSSI'] = $arrNetwork[2];
+        }
+    }
+}
+
+function connectedWifiStations(&$networks)
+{
+    exec('iwconfig ' . RASPI_WIFI_CLIENT_INTERFACE, $iwconfig_return);
+    foreach ($iwconfig_return as $line) {
+        if (preg_match('/ESSID:\"([^"]+)\"/i', $line, $iwconfig_ssid)) {
+            $networks[$iwconfig_ssid[1]]['connected'] = true;
+        }
+    }
+}