Posting hidden form values with cURL

[freeloader]

I'm writing an app that works through a couple steps of a sign in process.

This is the form:

[code]      <form action="register.dt" method="post">
      <input type="hidden" name="step" value="4">
      <input type="hidden" name="username" value="myID">
      <input type="hidden" name="password" value="mypass">
      <input type="hidden" name="email" value="mye-mail@jetable.org">
      <input type="hidden" name="password2" value="mypass">
      <input type="hidden" name="email2" value="mye-mail@jetable.org">
      <input type="hidden" name="referid" value="">
      <input type="hidden" name="firstname" value="Bakth">
      <input type="hidden" name="lastname" value="Hally">
      <input type="hidden" name="gender" value="Male">
      <input type="hidden" name="dob_month" value="01">
      <input type="hidden" name="dob_day" value="12">
      <input type="hidden" name="dob_year" value="1970">
      <input type="hidden" name="country" value="US">
      <input type="hidden" name="address" value="">
      <input type="hidden" name="city" value="">
      <input type="hidden" name="state" value="">
      <input type="hidden" name="zip" value="">
      <input type="hidden" name="phone" value="">
      <input type="hidden" name="race" value="1">
      <input type="hidden" name="subclass" value="1">
      <tr>
        <td colspan="2" class="box_header"><b>Step 4: Rules and Account Recovery</b></td>
      </tr>
      <tr>
        <td colspan="2" class="box_content">
          <input type="checkbox" name="iagreetoterms" value="1"> I have read and agree to the <a href="tos.dt" target="_blank">Terms of Use</a>.<br>
          <br>
          <input type="checkbox" name="iagreetoantispam" value="1"> I have read and agree to the <a href="antispam.dt" target="_blank">Anti Spam Policy</a>.<br>
          <br>
          <input type="checkbox" name="iagreetorules" value="1"> I have read and agree to the <a href="rules.dt" target="_blank">Rules</a>.<br>
        </td>
      </tr>
      <tr>
        <td colspan="2" class="box_content">
          <b>Security Code</b><br>
          <br>
          <font class="small">Please enter a security code. This code will be used for claiming prizes, change of address, loss of account, and other site-related functions. We suggest you print your security code and save it in your records. </font>
          <br>
          <br>
          <select onchange="javascript: if (this.options[this.selectedIndex].value == 'custom') { document.getElementById('customq').style.visibility = 'visible'; } else { document.getElementById('customq').style.visibility = 'hidden'; }" name="security_question">
            <option>Whats your mother's maiden name?</option>
            <option>Whats your pet's name?</option>
            <option value="custom">Other (specify below)</option>
          </select><br>
          <div id="customq" style="visibility: hidden">
            Question <input value="" type="text" name="custom_question">
          </div>
          Security Word <input value="" type="text" name="securitycode"><br>
        </td>
      </tr>
      <tr>
        <input type="hidden" id="submit" name="submit" value="TRUE">
        <td align="right" colspan="2" class="box_content"><input src="templates/notloggedin/images/buttons/continue.gif" type="image"></td>
      </tr>
      </form>[/code]

I'd like to know how I can include the hidden fields in my cURL request.

This is my current cURL setting:

[code] $url = "http://www.darkthrone.com/register.dt";
$agent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0";
$question = "Whats your mother's maiden name?";
$postfield4 = "race=1&subclass=1&iagreetoterms=1&iagreetoantispam=1&iagreetorules=1&security_question=".$question."&securitycode=fadzilah&x=47&y=142";
$postfieldsize4 = strlen($postfield4);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
//curl_setopt($ch, CURLOPT_COOKIE, $cookie);
curl_setopt($ch, CURLOPT_REFERER, $url);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_FAILONERROR,1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1);
curl_setopt($ch, CURLOPT_TIMEOUT,2000);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postfield4);
//curl_setopt($ch, CURLOPT_POSTFIELDSIZE, $postfieldsize4);
$res=curl_exec($ch);
curl_close($ch);[/code]

As you see, I included the postfields yet to be posted, but I have no clue how to include the hidden postfields as it is also necessary data to be sent.

[printf]

The hidden post field will also be added to [b]$postfield4[/b] value!

me!