Android Open Source - WiFiKeyView Network Parser

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License

The source code is released under:

Apache License

Java Source Code

package com.whd.wifikeyview.network;
//from  w  w w . j a  v  a 2 s .c o  m
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import com.whd.wifikeyview.R;
import com.whd.wifikeyview.WiFiKeyView;


import android.annotation.SuppressLint;
import eu.chainfire.libsuperuser.Shell;

public class NetworkParser {
  // The data blocks
  private static final String WIFI_BLOCK_START = "network={";
  private static final String WIFI_BLOCK_END   = "}";
  
  // Supplicant files
  private static String[] passwordFiles = new String[] {
      "/data/misc/wifi/wpa_supplicant.conf",
      "/data/wifi/bcm_supp.conf",
      "/data/misc/wifi/wpa.conf"
  };
  
  // An list with all networks
  private static List<Network> networks;
  
  /**
   * This will parse the 'wpa_supplicant.conf' file, construct in a separate thread and parse it.
   * After parsing you can use it without threads.
   */
  public static List<Network> getNetworks() {
    networks = new ArrayList<Network>();
    
    // Do we have access to the root shell?
    if (Shell.SU.available()) {
      
      // Try to read the file, if it returns empty, try another
      List<String> suResult = null;
      for (String passwordFile : passwordFiles) {
        suResult = Shell.SU.run("cat " + passwordFile);
        
        if (!suResult.isEmpty()) {
          break;
        }
      }
      
      if ( (suResult != null) && (!suResult.isEmpty()) ) {
        parse(suResult);
      } else {
        WiFiKeyView.log("NetworkParser#getNetworks(); Could not open a supplicant file");
      }
    } else {
      WiFiKeyView.log("NetworkParser#getNetworks(); Root shell was not available!");
    }
    
    return networks;
  }
  
  /**
   * This method parses an String containing network={} from 'wpa_supplicant.conf'
   */
  @SuppressLint("DefaultLocale")
  private static void parse(List<String> configurationFile) {
    Network network = null;
    
    for (String string : configurationFile) {
      // If we have no network object, read to first opening
      if (network == null) {
        if (string.startsWith(WIFI_BLOCK_START)) {
          network = new Network();
        } else {
          // Ignore this
          // Empty lines will come up here (and the variables from the start of the supplicant)
        }
      } else {
        // Are we at the end?
        if (string.startsWith(WIFI_BLOCK_END)) {
          networks.add(network);
          network = null;
        } else {
          // Read the data
          String[] entry = string.split("=");
          
          // An entry always has it's key and a value
          if (entry.length == 2) {
            try {
              // Trim spaces to match items in NetworkKeys
              // Convert to uppercase to match constants in NetworkKeys
              entry[0] = entry[0].trim().toUpperCase();
              
              // Put the current key-value in the network holder,
              // or throw IllegalArgumentException if key does not exist
              network.put(SupplicantKey.valueOf(entry[0]), entry[1].replace("\"", ""));
              
            } catch (IllegalArgumentException iae) {
              if (WiFiKeyView.isDebugging()) {
                WiFiKeyView.log("NetworkParser#parse(List<String>); Unknown key in supplicant file: " + entry[0]);
              }
            }
          } else {
            if (WiFiKeyView.isDebugging()) {
              WiFiKeyView.log("NetworkParser#parse(List<String>); Unknown entry in supplicant file: " + string);
            }
          }
        }
      }
    }
  }
  
  /**
   * @author WHD
   *
   * This class makes the rest of the source easier to read
   */
  public static class Network extends HashMap<SupplicantKey, String> {
    private static final long serialVersionUID = 0L;
  }
  
  /**
   * @author WHD
   *
   * This class contains the keys found in the supplicant files
   */
  public enum SupplicantKey {
    SSID          (R.string.supplicant_key_ssid),
    BSSID          (R.string.supplicant_key_bssid),
    WEP_KEY0        (R.string.supplicant_key_wep_key0),
    WEP_KEY1        (R.string.supplicant_key_wep_key1),
    WEP_KEY2        (R.string.supplicant_key_wep_key2),
    WEP_KEY3        (R.string.supplicant_key_wep_key3),
    PSK            (R.string.supplicant_key_psk),
    PASSWORD        (R.string.supplicant_key_password),
    KEY_MGMT        (R.string.supplicant_key_key_mgmt),
    GROUP          (R.string.supplicant_key_group),
    AUTH_ALG        (R.string.supplicant_key_auth_alg),
    EAP            (R.string.supplicant_key_eap),
    IDENTITY        (R.string.supplicant_key_identity),
    ANOMYMOUS_IDENTITY    (R.string.supplicant_key_anonymous_identity),
    PHASE1          (R.string.supplicant_key_phase1),
    PHASE2          (R.string.supplicant_key_phase2),
    PRIORITY        (R.string.supplicant_key_priority),
    PAC_FILE        (R.string.supplicant_key_pac_file),
    CA_CERT          (R.string.supplicant_key_ca_cert),
    CLIENT_CERT        (R.string.supplicant_key_client_cert),
    PRIVATE_KEY        (R.string.supplicant_key_private_key),
    PRIVATE_KEY_PASSWORD  (R.string.supplicant_key_private_key_password);
    
    private int stringRes;
    
    private SupplicantKey(int stringRes) {
      this.stringRes = stringRes;
    }
    
    public int getString() {
      return stringRes;
    }
  }
  
}

Java Source Code List

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