eduardogoncalves/captiveportal-register.php

## captiveportal-register.php
<?php
require_once("functions.inc");
require_once("config.lib.inc");
require_once("auth.inc");

if ($_POST) {
  $a_user = &$config['system']['user'];

  unset($input_errors);
  $pconfig = $_POST;

  /* input validation */
  if ($_POST['username'] == "") {
    $input_errors[] = "The username is required.";
  }

  if ($_POST['password'] == "") {
    $input_errors[] = "The password is required.";
  }

  if (preg_match("/[^a-zA-Z0-9\.\-_]/", $_POST['username'])) {
    $input_errors[] = "The username contains invalid characters.";
  }

  if (strlen($_POST['username']) > 16) {
    $input_errors[] = "The username is longer than 16 characters.";
  }

  if (($_POST['password']) && ($_POST['password'] != $_POST['password2'])) {
    $input_errors[] = "The passwords do not match.";
  }

  /* check the username is unique */
  if (!$input_errors) {
    foreach ($a_user as $userent) {
      if ($userent['name'] == $_POST['username']) {
        $input_errors[] = "Another entry with the same username already exists.";
        break;
      }
    }
  }

  /* ... and that it's not reserved */
  if (!$input_errors) {
    $system_users = explode("\n", file_get_contents("/etc/passwd"));
    foreach ($system_users as $s_user) {
      $ent = explode(":", $s_user);
      if ($ent[0] == $_POST['username']) {
        $input_errors[] = "That username is reserved by the system.";
        break;
      }
    }
  }

  /* save it */
  if (!$input_errors) {
    $userent = array();

    if ($_POST['password']) {
      local_user_set_password($userent, $_POST['password']);
    }

    $userent['uid'] = $config['system']['nextuid']++;
    $userent['name'] = $_POST['username'];
    $userent['descr'] = $_POST['fullname'];
    $userent['expires'] = "";

    conf_mount_rw();

    /* add the user to "All Users" group */
    foreach ($config['system']['group'] as $gidx => $group) {
      if ($group['name'] == "all") {
        if (!is_array($config['system']['group'][$gidx]['member']))
          $config['system']['group'][$gidx]['member'] = array();
        $config['system']['group'][$gidx]['member'][] = $userent['uid'];
        break;
      }
    }

    $a_user[] = $userent;
    local_user_set_groups($userent, array("captiveportal")); // <- Remove this line if you don't want / have a "captiveportal" group
    local_user_set($userent);
    write_config();
    conf_mount_ro();
    $done = true;
  }
}

?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>User Registration</title>
</head>

<body>

<?php if (isset($done)) { ?>
<br/>
Your registration is processed. You now can login <a href="/">here</a>.

<?php } else {
  if ($input_errors) {
    echo "Error <br/>";
    foreach ($input_errors  as $input_error) {
      echo $input_error . "<br>";
    }
  }
?>

<form method="post">
<table width="450" border="1">
  <tr>
    <td colspan="2">Registration</td>
  </tr>
  <tr>
    <td width="132">Username</td>
    <td width="302"><input type="text" name="username" id="txt_username" /></td>
  </tr>
  <tr>
    <td>Password</td>
    <td><input type="password" name="password" id="txt_pwd1" /></td>
  </tr>
  <tr>
    <td>Verify Password </td>
    <td><input type="password" name="password2" id="txt_pwd2" /></td>
  </tr>
  <tr>
    <td>Fullname</td>
    <td><input type="text" name="fullname" id="txt_name" /></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td><label>
      <input type="submit" name="btn_submit" id="btn_submit" value="Register" />
    </label></td>
  </tr>
</table>
<?php } ?>
</form>
</body>
</html>
	<?php
	require_once("functions.inc");
	require_once("config.lib.inc");
	require_once("auth.inc");

	if ($_POST) {
	$a_user = &$config['system']['user'];

	unset($input_errors);
	$pconfig = $_POST;

	/* input validation */
	if ($_POST['username'] == "") {
	$input_errors[] = "The username is required.";
	}

	if ($_POST['password'] == "") {
	$input_errors[] = "The password is required.";
	}

	if (preg_match("/[^a-zA-Z0-9\.\-_]/", $_POST['username'])) {
	$input_errors[] = "The username contains invalid characters.";
	}

	if (strlen($_POST['username']) > 16) {
	$input_errors[] = "The username is longer than 16 characters.";
	}

	if (($_POST['password']) && ($_POST['password'] != $_POST['password2'])) {
	$input_errors[] = "The passwords do not match.";
	}

	/* check the username is unique */
	if (!$input_errors) {
	foreach ($a_user as $userent) {
	if ($userent['name'] == $_POST['username']) {
	$input_errors[] = "Another entry with the same username already exists.";
	break;
	}
	}
	}

	/* ... and that it's not reserved */
	if (!$input_errors) {
	$system_users = explode("\n", file_get_contents("/etc/passwd"));
	foreach ($system_users as $s_user) {
	$ent = explode(":", $s_user);
	if ($ent[0] == $_POST['username']) {
	$input_errors[] = "That username is reserved by the system.";
	break;
	}
	}
	}

	/* save it */
	if (!$input_errors) {
	$userent = array();

	if ($_POST['password']) {
	local_user_set_password($userent, $_POST['password']);
	}

	$userent['uid'] = $config['system']['nextuid']++;
	$userent['name'] = $_POST['username'];
	$userent['descr'] = $_POST['fullname'];
	$userent['expires'] = "";

	conf_mount_rw();

	/* add the user to "All Users" group */
	foreach ($config['system']['group'] as $gidx => $group) {
	if ($group['name'] == "all") {
	if (!is_array($config['system']['group'][$gidx]['member']))
	$config['system']['group'][$gidx]['member'] = array();
	$config['system']['group'][$gidx]['member'][] = $userent['uid'];
	break;
	}
	}

	$a_user[] = $userent;
	local_user_set_groups($userent, array("captiveportal")); // <- Remove this line if you don't want / have a "captiveportal" group
	local_user_set($userent);
	write_config();
	conf_mount_ro();
	$done = true;
	}
	}

	?>
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>User Registration</title>
	</head>

	<body>

	<?php if (isset($done)) { ?>
	<br/>
	Your registration is processed. You now can login <a href="/">here</a>.

	<?php } else {
	if ($input_errors) {
	echo "Error <br/>";
	foreach ($input_errors as $input_error) {
	echo $input_error . "<br>";
	}
	}
	?>

	<form method="post">
	<table width="450" border="1">
	<tr>
	<td colspan="2">Registration</td>
	</tr>
	<tr>
	<td width="132">Username</td>
	<td width="302"><input type="text" name="username" id="txt_username" /></td>
	</tr>
	<tr>
	<td>Password</td>
	<td><input type="password" name="password" id="txt_pwd1" /></td>
	</tr>
	<tr>
	<td>Verify Password </td>
	<td><input type="password" name="password2" id="txt_pwd2" /></td>
	</tr>
	<tr>
	<td>Fullname</td>
	<td><input type="text" name="fullname" id="txt_name" /></td>
	</tr>
	<tr>
	<td> </td>
	<td><label>
	<input type="submit" name="btn_submit" id="btn_submit" value="Register" />
	</label></td>
	</tr>
	</table>
	<?php } ?>
	</form>
	</body>
	</html>