<?php

function DisplayHostAPDConfig(){
  global $page;
  $myStatus = new StatusMessages();

  $arrConfig = array();
  $arrChannel = array('a','b','g');
  $arrSecurity = array( 1 => 'WPA', 2 => 'WPA2',3=> 'WPA+WPA2');
  $arrEncType = array('TKIP' => 'TKIP', 'CCMP' => 'CCMP', 'TKIP CCMP' => 'TKIP+CCMP');
  exec("ip -o link show | awk -F': ' '{print $2}'", $interfaces);


  if( isset($_POST['SaveHostAPDSettings']) ) {
    if (CSRFValidate()) {
      SaveHostAPDConfig($arrSecurity, $arrEncType, $arrChannel, $interfaces, $myStatus);
    } else {
      error_log('CSRF violation');
    }
  } elseif( isset($_POST['StartHotspot']) ) {
    if (CSRFValidate()) {
      $myStatus->addMessage('Attempting to start hotspot', 'info');
      exec( 'sudo /etc/init.d/hostapd start', $return );
      foreach( $return as $line ) {
        $myStatus->addMessage($line, 'info');
      }
    } else {
      error_log('CSRF violation');
    }
  } elseif( isset($_POST['StopHotspot']) ) {
    if (CSRFValidate()) {
      $myStatus->addMessage('Attempting to stop hotspot', 'info');
      exec( 'sudo /etc/init.d/hostapd stop', $return );
      foreach( $return as $line ) {
        $myStatus->addMessage($line, 'info');
      }
    } else {
      error_log('CSRF violation');
    }
  }

  exec( 'cat '. RASPI_HOSTAPD_CONFIG, $return );
  exec( 'pidof hostapd | wc -l', $hostapdstatus);

  if( $hostapdstatus[0] == 0 ) {
    $myStatus->addMessage('HostAPD is not running', 'warning');
  } else {
    $myStatus->addMessage('HostAPD is running', 'success');
  }

  foreach( $return as $a ) {
    if( $a[0] != "#" ) {
      $arrLine = explode( "=",$a) ;
      $arrConfig[$arrLine[0]]=$arrLine[1];
    }
  };
  ?>
  <div class="row">
    <div class="col-lg-12">
      <div class="panel panel-primary">
        <div class="panel-heading"><i class="fa fa-dot-circle fa-fw"></i> Configure Hotspot</div>
        <!-- /.panel-heading -->
        <div class="panel-body">
          <?php if ($myStatus->isMessage()) echo "<p>" . $myStatus->showMessages() . "</p>"; ?>
          <form role="form" action="?page=<?php echo $page ?>" method="POST">
            <!-- Nav tabs -->
            <ul class="nav nav-tabs">
              <li class="active"><a href="#basic" data-toggle="tab">Basic</a></li>
              <li><a href="#security" data-toggle="tab">Security</a></li>
              <li><a href="#advanced" data-toggle="tab">Advanced</a></li>
            </ul>

            <!-- Tab panes -->
            <div class="tab-content">
                <div class="tab-pane fade in active" id="basic">

                <h4>Basic settings</h4>
                <?php CSRFToken() ?>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">Interface</label>
                    <?php
                      SelectorOptions('interface', $interfaces, $arrConfig['interface']);
                    ?>
                  </div>
                </div>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">SSID</label>
                    <input type="text" class="form-control" name="ssid" value="<?php echo $arrConfig['ssid']; ?>" />
                  </div>
                </div>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">Wireless Mode</label>
                    <?php SelectorOptions('hw_mode', $arrChannel, $arrConfig['hw_mode']); ?>
                  </div>
                </div>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">Channel</label>
                    <?php SelectorOptions('channel', range(1, 14), intval($arrConfig['channel'])) ?>
                  </div>
                </div>
              </div>
              <div class="tab-pane fade" id="security">
                <h4>Security settings</h4>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">Security type</label>
                    <?php SelectorOptions('wpa', $arrSecurity, $arrConfig['wpa']); ?>
                  </div>
                </div>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">Encryption Type</label>
                    <?php SelectorOptions('wpa_pairwise', $arrEncType, $arrConfig['wpa_pairwise']); ?>
                  </div>
                </div>
                <div class="row">
                  <div class="form-group col-md-4">
                    <label for="code">PSK</label>
                    <input type="text" class="form-control" name="wpa_passphrase" value="<?php echo $arrConfig['wpa_passphrase'] ?>" />
                  </div>
                </div>
              </div>
              <div class="tab-pane fade" id="advanced">
                <h4>Advanced settings</h4>
                <div class="row">
                  <div class="form-group col-md-4">
                  <label for="code">Country Code</label>
                  <input type="hidden" id="selected_country" value="<?php echo $arrConfig['country_code'] ?>">
                  <select  class="form-control"  id="countries" name="country_code"  style="background-color: #c0ffc0;">
                    <option value="AF">Afghanistan</option>
                    <option value="AX">Ã…land Islands</option>
                    <option value="AL">Albania</option>
                    <option value="DZ">Algeria</option>
                    <option value="AS">American Samoa</option>
                    <option value="AD">Andorra</option>
                    <option value="AO">Angola</option>
                    <option value="AI">Anguilla</option>
                    <option value="AQ">Antarctica</option>
                    <option value="AG">Antigua and Barbuda</option>
                    <option value="AR">Argentina</option>
                    <option value="AM">Armenia</option>
                    <option value="AW">Aruba</option>
                    <option value="AU">Australia</option>
                    <option value="AT">Austria</option>
                    <option value="AZ">Azerbaijan</option>
                    <option value="BS">Bahamas</option>
                    <option value="BH">Bahrain</option>
                    <option value="BD">Bangladesh</option>
                    <option value="BB">Barbados</option>
                    <option value="BY">Belarus</option>
                    <option value="BE">Belgium</option>
                    <option value="BZ">Belize</option>
                    <option value="BJ">Benin</option>
                    <option value="BM">Bermuda</option>
                    <option value="BT">Bhutan</option>
                    <option value="BO">Bolivia, Plurinational State of</option>
                    <option value="BQ">Bonaire, Sint Eustatius and Saba</option>
                    <option value="BA">Bosnia and Herzegovina</option>
                    <option value="BW">Botswana</option>
                    <option value="BV">Bouvet Island</option>
                    <option value="BR">Brazil</option>
                    <option value="IO">British Indian Ocean Territory</option>
                    <option value="BN">Brunei Darussalam</option>
                    <option value="BG">Bulgaria</option>
                    <option value="BF">Burkina Faso</option>
                    <option value="BI">Burundi</option>
                    <option value="KH">Cambodia</option>
                    <option value="CM">Cameroon</option>
                    <option value="CA">Canada</option>
                    <option value="CV">Cape Verde</option>
                    <option value="KY">Cayman Islands</option>
                    <option value="CF">Central African Republic</option>
                    <option value="TD">Chad</option>
                    <option value="CL">Chile</option>
                    <option value="CN">China</option>
                    <option value="CX">Christmas Island</option>
                    <option value="CC">Cocos (Keeling) Islands</option>
                    <option value="CO">Colombia</option>
                    <option value="KM">Comoros</option>
                    <option value="CG">Congo</option>
                    <option value="CD">Congo, the Democratic Republic of the</option>
                    <option value="CK">Cook Islands</option>
                    <option value="CR">Costa Rica</option>
                    <option value="CI">CÃ´te d'Ivoire</option>
                    <option value="HR">Croatia</option>
                    <option value="CU">Cuba</option>
                    <option value="CW">CuraÃ§ao</option>
                    <option value="CY">Cyprus</option>
                    <option value="CZ">Czech Republic</option>
                    <option value="DK">Denmark</option>
                    <option value="DJ">Djibouti</option>
                    <option value="DM">Dominica</option>
                    <option value="DO">Dominican Republic</option>
                    <option value="EC">Ecuador</option>
                    <option value="EG">Egypt</option>
                    <option value="SV">El Salvador</option>
                    <option value="GQ">Equatorial Guinea</option>
                    <option value="ER">Eritrea</option>
                    <option value="EE">Estonia</option>
                    <option value="ET">Ethiopia</option>
                    <option value="FK">Falkland Islands (Malvinas)</option>
                    <option value="FO">Faroe Islands</option>
                    <option value="FJ">Fiji</option>
                    <option value="FI">Finland</option>
                    <option value="FR">France</option>
                    <option value="GF">French Guiana</option>
                    <option value="PF">French Polynesia</option>
                    <option value="TF">French Southern Territories</option>
                    <option value="GA">Gabon</option>
                    <option value="GM">Gambia</option>
                    <option value="GE">Georgia</option>
                    <option value="DE">Germany</option>
                    <option value="GH">Ghana</option>
                    <option value="GI">Gibraltar</option>
                    <option value="GR">Greece</option>
                    <option value="GL">Greenland</option>
                    <option value="GD">Grenada</option>
                    <option value="GP">Guadeloupe</option>
                    <option value="GU">Guam</option>
                    <option value="GT">Guatemala</option>
                    <option value="GG">Guernsey</option>
                    <option value="GN">Guinea</option>
                    <option value="GW">Guinea-Bissau</option>
                    <option value="GY">Guyana</option>
                    <option value="HT">Haiti</option>
                    <option value="HM">Heard Island and McDonald Islands</option>
                    <option value="VA">Holy See (Vatican City State)</option>
                    <option value="HN">Honduras</option>
                    <option value="HK">Hong Kong</option>
                    <option value="HU">Hungary</option>
                    <option value="IS">Iceland</option>
                    <option value="IN">India</option>
                    <option value="ID">Indonesia</option>
                    <option value="IR">Iran, Islamic Republic of</option>
                    <option value="IQ">Iraq</option>
                    <option value="IE">Ireland</option>
                    <option value="IM">Isle of Man</option>
                    <option value="IL">Israel</option>
                    <option value="IT">Italy</option>
                    <option value="JM">Jamaica</option>
                    <option value="JP">Japan</option>
                    <option value="JE">Jersey</option>
                    <option value="JO">Jordan</option>
                    <option value="KZ">Kazakhstan</option>
                    <option value="KE">Kenya</option>
                    <option value="KI">Kiribati</option>
                    <option value="KP">Korea, Democratic People's Republic of</option>
                    <option value="KR">Korea, Republic of</option>
                    <option value="KW">Kuwait</option>
                    <option value="KG">Kyrgyzstan</option>
                    <option value="LA">Lao People's Democratic Republic</option>
                    <option value="LV">Latvia</option>
                    <option value="LB">Lebanon</option>
                    <option value="LS">Lesotho</option>
                    <option value="LR">Liberia</option>
                    <option value="LY">Libya</option>
                    <option value="LI">Liechtenstein</option>
                    <option value="LT">Lithuania</option>
                    <option value="LU">Luxembourg</option>
                    <option value="MO">Macao</option>
                    <option value="MK">Macedonia, the former Yugoslav Republic of</option>
                    <option value="MG">Madagascar</option>
                    <option value="MW">Malawi</option>
                    <option value="MY">Malaysia</option>
                    <option value="MV">Maldives</option>
                    <option value="ML">Mali</option>
                    <option value="MT">Malta</option>
                    <option value="MH">Marshall Islands</option>
                    <option value="MQ">Martinique</option>
                    <option value="MR">Mauritania</option>
                    <option value="MU">Mauritius</option>
                    <option value="YT">Mayotte</option>
                    <option value="MX">Mexico</option>
                    <option value="FM">Micronesia, Federated States of</option>
                    <option value="MD">Moldova, Republic of</option>
                    <option value="MC">Monaco</option>
                    <option value="MN">Mongolia</option>
                    <option value="ME">Montenegro</option>
                    <option value="MS">Montserrat</option>
                    <option value="MA">Morocco</option>
                    <option value="MZ">Mozambique</option>
                    <option value="MM">Myanmar</option>
                    <option value="NA">Namibia</option>
                    <option value="NR">Nauru</option>
                    <option value="NP">Nepal</option>
                    <option value="NL">Netherlands</option>
                    <option value="NC">New Caledonia</option>
                    <option value="NZ">New Zealand</option>
                    <option value="NI">Nicaragua</option>
                    <option value="NE">Niger</option>
                    <option value="NG">Nigeria</option>
                    <option value="NU">Niue</option>
                    <option value="NF">Norfolk Island</option>
                    <option value="MP">Northern Mariana Islands</option>
                    <option value="NO">Norway</option>
                    <option value="OM">Oman</option>
                    <option value="PK">Pakistan</option>
                    <option value="PW">Palau</option>
                    <option value="PS">Palestinian Territory, Occupied</option>
                    <option value="PA">Panama</option>
                    <option value="PG">Papua New Guinea</option>
                    <option value="PY">Paraguay</option>
                    <option value="PE">Peru</option>
                    <option value="PH">Philippines</option>
                    <option value="PN">Pitcairn</option>
                    <option value="PL">Poland</option>
                    <option value="PT">Portugal</option>
                    <option value="PR">Puerto Rico</option>
                    <option value="QA">Qatar</option>
                    <option value="RE">RÃ©union</option>
                    <option value="RO">Romania</option>
                    <option value="RU">Russian Federation</option>
                    <option value="RW">Rwanda</option>
                    <option value="BL">Saint BarthÃ©lemy</option>
                    <option value="SH">Saint Helena, Ascension and Tristan da Cunha</option>
                    <option value="KN">Saint Kitts and Nevis</option>
                    <option value="LC">Saint Lucia</option>
                    <option value="MF">Saint Martin (French part)</option>
                    <option value="PM">Saint Pierre and Miquelon</option>
                    <option value="VC">Saint Vincent and the Grenadines</option>
                    <option value="WS">Samoa</option>
                    <option value="SM">San Marino</option>
                    <option value="ST">Sao Tome and Principe</option>
                    <option value="SA">Saudi Arabia</option>
                    <option value="SN">Senegal</option>
                    <option value="RS">Serbia</option>
                    <option value="SC">Seychelles</option>
                    <option value="SL">Sierra Leone</option>
                    <option value="SG">Singapore</option>
                    <option value="SX">Sint Maarten (Dutch part)</option>
                    <option value="SK">Slovakia</option>
                    <option value="SI">Slovenia</option>
                    <option value="SB">Solomon Islands</option>
                    <option value="SO">Somalia</option>
                    <option value="ZA">South Africa</option>
                    <option value="GS">South Georgia and the South Sandwich Islands</option>
                    <option value="SS">South Sudan</option>
                    <option value="ES">Spain</option>
                    <option value="LK">Sri Lanka</option>
                    <option value="SD">Sudan</option>
                    <option value="SR">Suriname</option>
                    <option value="SJ">Svalbard and Jan Mayen</option>
                    <option value="SZ">Swaziland</option>
                    <option value="SE">Sweden</option>
                    <option value="CH">Switzerland</option>
                    <option value="SY">Syrian Arab Republic</option>
                    <option value="TW">Taiwan, Province of China</option>
                    <option value="TJ">Tajikistan</option>
                    <option value="TZ">Tanzania, United Republic of</option>
                    <option value="TH">Thailand</option>
                    <option value="TL">Timor-Leste</option>
                    <option value="TG">Togo</option>
                    <option value="TK">Tokelau</option>
                    <option value="TO">Tonga</option>
                    <option value="TT">Trinidad and Tobago</option>
                    <option value="TN">Tunisia</option>
                    <option value="TR">Turkey</option>
                    <option value="TM">Turkmenistan</option>
                    <option value="TC">Turks and Caicos Islands</option>
                    <option value="TV">Tuvalu</option>
                    <option value="UG">Uganda</option>
                    <option value="UA">Ukraine</option>
                    <option value="AE">United Arab Emirates</option>
                    <option value="GB">United Kingdom</option>
                    <option value="US">United States</option>
                    <option value="UM">United States Minor Outlying Islands</option>
                    <option value="UY">Uruguay</option>
                    <option value="UZ">Uzbekistan</option>
                    <option value="VU">Vanuatu</option>
                    <option value="VE">Venezuela, Bolivarian Republic of</option>
                    <option value="VN">Viet Nam</option>
                    <option value="VG">Virgin Islands, British</option>
                    <option value="VI">Virgin Islands, U.S.</option>
                    <option value="WF">Wallis and Futuna</option>
                    <option value="EH">Western Sahara</option>
                    <option value="YE">Yemen</option>
                    <option value="ZM">Zambia</option>
                    <option value="ZW">Zimbabwe</option>
        	  </select>
        	  <script>       
		    country = document.getElementById("selected_country").value;
		    countries = document.getElementById("countries");
		    ops = countries.getElementsByTagName("option");
		      for(i = 0;i < ops.length; i++) {
			if(ops[i].value == country){
			  ops[i].selected=true;
			  break;
			}
		      }
		  </script>
                </div>
              </div><!-- /.panel-body -->
            </div><!-- /.panel-primary -->
            <input type="submit" class="btn btn-primary" name="SaveHostAPDSettings" value="Save settings" />
            <?php
              if($hostapdstatus[0] == 0) {
                echo '<input type="submit" class="btn btn-success" name="StartHotspot" value="Start hotspot" />';
              } else {
                echo '<input type="submit" class="btn btn-warning" name="StopHotspot" value="Stop hotspot" />';
              };
            ?>
          </form>
        </div></div><!-- /.panel-primary -->
      <div class="panel-footer"> Information provided by hostapd</div>
    </div><!-- /.col-lg-12 -->
  </div><!-- /.row -->
<?php 
}

function SaveHostAPDConfig($wpa_array, $enc_types, $modes, $interfaces, $myStatus) {
  // It should not be possible to send bad data for these fields so clearly
  // someone is up to something if they fail. Fail silently.
  if (!(array_key_exists($_POST['wpa'], $wpa_array) && array_key_exists($_POST['wpa_pairwise'], $enc_types) && in_array($_POST['hw_mode'], $modes))) {
    error_log("Attempting to set hostapd config with wpa='".$_POST['wpa']."', wpa_pairwise='".$_POST['wpa_pairwise']."' and hw_mode='".$_POST['hw_mode']."'");
    return false;
  }
  if ((!filter_var($_POST['channel'], FILTER_VALIDATE_INT)) || intval($_POST['channel']) < 1 || intval($_POST['channel']) > 14) {
    error_log("Attempting to set channel to '".$_POST['channel']."'");
    return false;
  }

  $good_input = true;

  // Verify input
  if (strlen($_POST['ssid']) == 0 || strlen($_POST['ssid']) > 32) {
    // Not sure of all the restrictions of SSID
    $myStatus->addMessage('SSID must be between 1 and 32 characters', 'danger');
    $good_input = false;
  }
  if (strlen($_POST['wpa_passphrase']) < 8 || strlen($_POST['wpa_passphrase']) > 63) {
    $myStatus->addMessage('WPA passphrase must be between 8 and 63 characters', 'danger');
    $good_input = false;
  }
  if (! in_array($_POST['interface'], $interfaces)) {
    // The user is probably up to something here but it may also be a
    // genuine error.
    $myStatus->addMessage('Unknown interface '.$_POST['interface'], 'danger');
    $good_input = false;
  }
  if (strlen($_POST['country_code']) != 0 && strlen($_POST['country_code']) != 2) {
    $myStatus->addMessage('Country code must be blank or two characters', 'danger');
    $good_input = false;
  }

  if ($good_input) {
    if ($tmp_file = fopen('/tmp/hostapddata', 'w')) {
      // Fixed values
      fwrite($tmp_file, 'driver=nl80211'.PHP_EOL);
      fwrite($tmp_file, 'ctrl_interface='.RASPI_HOSTAPD_CTRL_INTERFACE.PHP_EOL);
      fwrite($tmp_file, 'ctrl_interface_group=0'.PHP_EOL);
      fwrite($tmp_file, 'beacon_int=100'.PHP_EOL);
      fwrite($tmp_file, 'auth_algs=1'.PHP_EOL);
      fwrite($tmp_file, 'wpa_key_mgmt=WPA-PSK'.PHP_EOL);

      fwrite($tmp_file, 'ssid='.$_POST['ssid'].PHP_EOL);
      fwrite($tmp_file, 'channel='.$_POST['channel'].PHP_EOL);
      fwrite($tmp_file, 'hw_mode='.$_POST['hw_mode'].PHP_EOL);
      fwrite($tmp_file, 'wpa_passphrase='.$_POST['wpa_passphrase'].PHP_EOL);
      fwrite($tmp_file, 'interface='.$_POST['interface'].PHP_EOL);
      fwrite($tmp_file, 'wpa='.$_POST['wpa'].PHP_EOL);
      fwrite($tmp_file, 'wpa_pairwise='.$_POST['wpa_pairwise'].PHP_EOL);
      fwrite($tmp_file, 'country_code='.$_POST['country_code'].PHP_EOL);
      fclose($tmp_file);

      system( "sudo cp /tmp/hostapddata " . RASPI_HOSTAPD_CONFIG, $return );
      if( $return == 0 ) {
        $myStatus->addMessage('Wifi Hotspot settings saved', 'success');
      } else {
        $myStatus->addMessage('Unable to save wifi hotspot settings', 'danger');
      }
    } else {
      $myStatus->addMessage('Unable to save wifi hotspot settings', 'danger');
      return false;
    }
  }
  return true;
}
?>
