static function captcha_settings_callback()
{
$captcha_url_cf = FSCF_Util::get_captcha_url_cf();
?>
<div class="clear"></div>
<fieldset class="fscf_settings_group">
<p class="submit">
<input id="submit" class="button-primary" type="submit" value="<?php
esc_attr_e('Save Changes', 'si-contact-form');
?>
" onclick="document.pressed=this.value" name="submit" />
</p>
<?php
self::display_ads();
?>
<input name="<?php
echo self::$form_option_name;
?>
[captcha_enable]" id="si_contact_captcha_enable" type="checkbox" <?php
if (self::$form_options['captcha_enable'] == 'true') {
echo ' checked="checked" ';
}
?>
value="true" />
<label for="<?php
echo self::$form_option_name;
?>
[captcha_enable]"><?php
_e('Enable CAPTCHA.', 'si-contact-form');
?>
</label>
<a style="cursor:pointer;" title="<?php
esc_attr_e('Click for Help!', 'si-contact-form');
?>
" onclick="toggleVisibility('si_contact_captcha_enable_tip');"><?php
_e('help', 'si-contact-form');
?>
</a>
<div class="fscf_tip" id="si_contact_captcha_enable_tip">
<?php
_e('Prevents automated spam bots by requiring that the user pass a CAPTCHA test before posting. You can disable CAPTCHA if you prefer, because the form also uses Akismet to prevent spam when Akismet plugin is installed with the key activated.', 'si-contact-form');
?>
</div>
<br />
<input name="<?php
echo self::$form_option_name;
?>
[captcha_small]" id="si_contact_captcha_small" type="checkbox" <?php
if (self::$form_options['captcha_small'] == 'true') {
echo ' checked="checked" ';
}
?>
value="true" />
<label for="<?php
echo self::$form_option_name;
?>
[captcha_small]"><?php
_e('Enable smaller size CAPTCHA image.', 'si-contact-form');
?>
</label>
<a style="cursor:pointer;" title="<?php
esc_attr_e('Click for Help!', 'si-contact-form');
?>
" onclick="toggleVisibility('si_contact_captcha_small_tip');"><?php
_e('help', 'si-contact-form');
?>
</a>
<div class="fscf_tip" id="si_contact_captcha_small_tip">
<?php
_e('Makes the CAPTCHA image smaller.', 'si-contact-form');
?>
</div>
<br />
<input name="<?php
echo self::$form_option_name;
?>
[captcha_perm]" id="si_contact_captcha_perm" type="checkbox" <?php
if (self::$form_options['captcha_perm'] == 'true') {
echo 'checked="checked"';
}
?>
value="true" />
<label for="<?php
echo self::$form_option_name;
?>
[captcha_perm]"><?php
_e('Hide CAPTCHA for', 'si-contact-form');
?>
<strong><?php
_e('registered', 'si-contact-form');
?>
</strong> <?php
__('users who can', 'si-contact-form');
?>
:</label>
<?php
self::si_contact_captcha_perm_dropdown(self::$form_option_name . '[captcha_perm_level]', self::$form_options['captcha_perm_level']);
?>
<br />
<input name="<?php
echo self::$form_option_name;
?>
[honeypot_enable]" id="si_contact_honeypot_enable" type="checkbox" <?php
if (self::$form_options['honeypot_enable'] == 'true') {
echo ' checked="checked" ';
}
?>
value="true" />
<label for="<?php
echo self::$form_option_name;
?>
[honeypot_enable]"><?php
_e('Enable honeypot spambot trap.', 'si-contact-form');
?>
</label>
<a style="cursor:pointer;" title="<?php
esc_attr_e('Click for Help!', 'si-contact-form');
?>
" onclick="toggleVisibility('si_contact_honeypot_enable_tip');"><?php
_e('help', 'si-contact-form');
?>
</a>
<div class="fscf_tip" id="si_contact_honeypot_enable_tip">
<?php
_e('Enables hidden empty field honyepot trap for spam bots. For best results, do not enable unless you have a spam problem.', 'si-contact-form');
?>
</div>
<br />
</fieldset>
<?php
}
static function display_captcha()
{
// this function adds the captcha to the contact form
$captchaRequiresError = '';
$enable_php_sessions = 0;
if (self::$global_options['enable_php_sessions'] == 'true') {
$enable_php_sessions = 1;
}
$string = '';
// Test for some required things, print error message right here if not OK.
// Code moved in from function captchaCheckRequires() -- only called once
$captcha_ok = true;
// Test for some required things, print error message if not OK.
if (!extension_loaded('gd') || !function_exists('gd_info')) {
$captchaRequiresError .= '<p ' . self::get_this_css('error_style') . '>' . __('ERROR: si-contact-form.php plugin says GD image support not detected in PHP!', 'si-contact-form') . '</p>';
$captchaRequiresError .= '<p>' . __('Contact your web host and ask them why GD image support is not enabled for PHP.', 'si-contact-form') . '</p>';
$captcha_ok = false;
}
if (!function_exists('imagepng')) {
$captchaRequiresError .= '<p ' . self::get_this_css('error_style') . '>' . __('ERROR: si-contact-form.php plugin says imagepng function not detected in PHP!', 'si-contact-form') . '</p>';
$captchaRequiresError .= '<p>' . __('Contact your web host and ask them why imagepng function is not enabled for PHP.', 'si-contact-form') . '</p>';
$captcha_ok = false;
}
if (!@strtolower(ini_get('safe_mode')) == 'on' && !file_exists(FSCF_CAPTCHA_PATH . '/securimage.php')) {
$captchaRequiresError .= '<p ' . self::get_this_css('error_style') . '>' . __('ERROR: si-contact-form.php plugin says captcha_library not found.', 'si-contact-form') . '</p>';
$captcha_ok = false;
}
if ($captcha_ok) {
// the captch html
$string = "\n<div " . self::get_this_css('title_style') . ">\n</div>\n" . '<div id="fscf_captcha_image_div' . self::$form_id_num . '" ';
// url for captcha image
$captcha_url_cf = FSCF_Util::get_captcha_url_cf();
$securimage_show_url = $captcha_url_cf . '/securimage_show.php?';
$securimage_size = 'width="175" height="60"';
if (self::$form_options['captcha_small'] == 'true') {
$securimage_show_url .= 'ctf_sm_captcha=1&';
$securimage_size = 'width="132" height="45"';
}
$parseUrl = parse_url($captcha_url_cf);
$securimage_url = $parseUrl['path'];
if (!$enable_php_sessions) {
// no sessions
self::init_temp_dir(FSCF_CAPTCHA_PATH . '/cache/');
// clean out old captcha cache files
self::clean_temp_dir(FSCF_CAPTCHA_PATH . '/cache/');
// pick new prefix token
$prefix_length = 16;
$prefix_characters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz';
$prefix = '';
$prefix_count = strlen($prefix_characters);
while ($prefix_length--) {
$prefix .= $prefix_characters[mt_rand(0, $prefix_count - 1)];
}
$securimage_show_rf_url = $securimage_show_url . 'prefix=';
$securimage_show_url .= 'prefix=' . $prefix;
} else {
// no session
$securimage_show_rf_url = $securimage_show_url . 'ctf_form_num=' . self::$form_id_num;
$securimage_show_url .= 'ctf_form_num=' . self::$form_id_num;
}
$string .= self::$form_options['captcha_small'] == 'true' ? self::get_this_css('captcha_div_style_sm') : self::get_this_css('captcha_div_style_m');
$string .= ">\n" . ' <img id="fscf_captcha_image' . self::$form_id_num . '" ';
$string .= self::get_this_css('captcha_image_style');
$string .= ' src="' . $securimage_show_url . '" ' . $securimage_size . ' alt="';
$string .= self::$form_options['tooltip_captcha'] != '' ? esc_html(self::$form_options['tooltip_captcha']) : esc_html(__('CAPTCHA Image', 'si-contact-form'));
$string .= '" title="';
$string .= self::$form_options['tooltip_captcha'] != '' ? esc_html(self::$form_options['tooltip_captcha']) : esc_html(__('CAPTCHA Image', 'si-contact-form'));
$string .= '" />' . "\n";
if (!$enable_php_sessions) {
// no sessions
$string .= ' <input id="fscf_captcha_prefix' . self::$form_id_num . '" type="hidden" name="fscf_captcha_prefix' . self::$form_id_num . '" value="' . esc_attr($prefix) . '" />' . "\n";
}
$string .= ' <div id="fscf_captcha_refresh' . self::$form_id_num . '">' . "\n";
$string .= ' <a href="#" rel="nofollow" title="';
$string .= self::$form_options['tooltip_refresh'] != '' ? esc_html(self::$form_options['tooltip_refresh']) : esc_html(__('Refresh Image', 'si-contact-form'));
if (!$enable_php_sessions) {
// no sessions
$string .= '" onclick="fscf_captcha_refresh(\'' . self::$form_id_num . '\',\'' . $securimage_url . '\',\'' . $securimage_show_rf_url . '\'); return false;">' . "\n";
} else {
$string .= '" onclick="document.getElementById(\'fscf_captcha_image' . self::$form_id_num . '\').src = \'' . $securimage_show_url . '&sid=\'' . ' + Math.random(); return false;">' . "\n";
}
$string .= ' <img src="' . $captcha_url_cf . '/images/refresh.png" width="22" height="20" alt="';
$string .= self::$form_options['tooltip_refresh'] != '' ? esc_html(self::$form_options['tooltip_refresh']) : esc_html(__('Refresh Image', 'si-contact-form'));
$string .= '" ';
$string .= self::get_this_css('captcha_reload_image_style');
$string .= ' onclick="this.blur();" /></a>
</div>
</div>
<div id="fscf_captcha_field' . self::$form_id_num . '" ' . self::get_this_css('title_style') . '>
<label ' . self::get_this_css('label_style') . ' for="fscf_captcha_code' . self::$form_id_num . '">';
$string .= self::$form_options['title_capt'] != '' ? self::$form_options['title_capt'] : __('CAPTCHA Code:', 'si-contact-form');
$string .= self::$req_field_ind . '</label>
</div>
<div ' . self::get_this_css('field_div_style') . '>' . self::echo_if_error('captcha') . "\n <input " . self::get_this_css('captcha_input_style') . ' type="text" value="" id="fscf_captcha_code' . self::$form_id_num . '" name="captcha_code" ' . self::$aria_required . ' />';
$string .= "\n</div>";
} else {
$string .= $captchaRequiresError;
}
return $string;
}
