Fixed up PHP notices. Added text when IP Address, MAC Address, and Subnet mask aren't found.

Also added function to backup configuration files /etc/network/interfaces and /etc/hostapd/hostapd.conf files if found.

includes/dashboard.php

@@ -15,19 +15,19 @@ function DisplayDashboard(){
   $strWlan0 = preg_replace( '/\s\s+/', ' ', $strWlan0 );
 
   // Parse results from ifconfig/iwconfig
-  preg_match( '/HWaddr ([0-9a-f:]+)/i',$strWlan0,$result );
+  preg_match( '/HWaddr ([0-9a-f:]+)/i',$strWlan0,$result ) || $result[1] = 'No MAC Address Found';
   $strHWAddress = $result[1];
-  preg_match( '/inet addr:([0-9.]+)/i',$strWlan0,$result );
+  preg_match( '/inet addr:([0-9.]+)/i',$strWlan0,$result ) || $result[1] = 'No IP Address Found';
   $strIPAddress = $result[1];
-  preg_match( '/Mask:([0-9.]+)/i',$strWlan0,$result );
+  preg_match( '/Mask:([0-9.]+)/i',$strWlan0,$result ) || $result[1] = 'No Subnet Mask Found';
   $strNetMask = $result[1];
-  preg_match( '/RX packets:(\d+)/',$strWlan0,$result );
+  preg_match( '/RX packets:(\d+)/',$strWlan0,$result ) || $result[1] = 'No Data';
   $strRxPackets = $result[1];
-  preg_match( '/TX packets:(\d+)/',$strWlan0,$result );
+  preg_match( '/TX packets:(\d+)/',$strWlan0,$result ) || $result[1] = 'No Data';
   $strTxPackets = $result[1];
-  preg_match( '/RX bytes:(\d+ \(\d+.\d+ [K|M|G]iB\))/i',$strWlan0,$result );
+  preg_match( '/RX bytes:(\d+ \(\d+.\d+ [K|M|G]iB\))/i',$strWlan0,$result ) || $result[1] = 'No Data';
   $strRxBytes = $result[1];
-  preg_match( '/TX Bytes:(\d+ \(\d+.\d+ [K|M|G]iB\))/i',$strWlan0,$result );
+  preg_match( '/TX Bytes:(\d+ \(\d+.\d+ [K|M|G]iB\))/i',$strWlan0,$result ) || $result[1] = 'No Data';
   $strTxBytes = $result[1];
   preg_match( '/ESSID:\"([a-zA-Z0-9\s]+)\"/i',$strWlan0,$result );
   $strSSID = str_replace( '"','',$result[1] );

installers/common.sh

@@ -83,6 +83,8 @@ function create_raspap_directories() {
         sudo mv $raspap_dir $raspap_dir.original || install_error "Unable to move old '$raspap_dir' out of the way"
     fi
     sudo mkdir -p "$raspap_dir" || install_error "Unable to create directory '$raspap_dir'"
+    # Create a directory for existing file backups.
+    sudo mkdir -p "$raspap_dir/backups"
 
     sudo chown -R $raspap_user:$raspap_user "$raspap_dir" || install_error "Unable to change file ownership for '$raspap_dir'"
 }
@@ -108,6 +110,17 @@ function change_file_ownership() {
     sudo chown -R $raspap_user:$raspap_user "$webroot_dir" || install_error "Unable to change file ownership for '$webroot_dir'"
 }
 
+# Check for existing /etc/network/interfaces and /etc/hostapd/hostapd.conf files
+function check_for_old_configs() {
+    if [ -f /etc/network/interfaces ]; then
+        sudo mv /etc/network/interfaces "$raspap_dir/backups"
+    fi
+
+    if [ -f /etc/hostapd/hostapd.conf ]; then
+        sudo mv /etc/hostapd/hostapd.conf "$raspap_dir/backups"
+    fi
+}
+
 # Move configuration file to the correct location
 function move_config_file() {
     if [ ! -d "$raspap_dir" ]; then
@@ -178,6 +191,7 @@ function install_raspap() {
     install_dependencies
     enable_php_lighttpd
     create_raspap_directories
+    check_for_old_configs
     download_latest_files
     change_file_ownership
     move_config_file