我正在尝试在我的表单中添加一个蜜罐字段，我研究过的每件事都无法理解在哪里放置代码。任何帮助，将不胜感激。这就是我所拥有的：
<div class="hide">
<label for="spam">What is two plus two?</label>
<input name="spam" type="text" size="4" id="spam">
</div>
这是css：
.hide {display: none;}
这是我试图在.php文件中加入的.php：
$spa = $_POST["spam"];
if (!empty($spa) && !($spa == "4" || $spa == "four")) {
echo "You failed the bot test!";
exit ();
}
这是.php文件本身：
<?php
class contactForm{
function contactForm($cfg)
{
$this->cfg['email_address'] = isset($cfg['email_address'])?$cfg['email_address']:'';
// =?UTF-8?B? required to avoid bad character encoding in the From field
// é (keeps utf-8 encoding in the file)
$this->cfg['email_from'] = (isset($cfg['email_from']) && $cfg['email_from'])?'=?UTF-8?B?'.base64_encode($cfg['email_from']).'?=':$this->cfg['email_address'];
$this->cfg['email_address_cc'] = isset($cfg['email_address_cc'])?$cfg['email_address_cc']:'';
$this->cfg['email_address_bcc'] = isset($cfg['email_address_bcc'])?$cfg['email_address_bcc']:'';
$this->cfg['timezone'] = isset($cfg['timezone'])?$cfg['timezone']:'';
$this->cfg['adminnotification_subject'] = isset($cfg['adminnotification_subject'])?$cfg['adminnotification_subject']:'';
$this->cfg['usernotification_insertformdata'] = isset($cfg['usernotification_insertformdata'])?$cfg['usernotification_insertformdata']:'';
$this->cfg['usernotification_inputid'] = isset($cfg['usernotification_inputid'])?$cfg['usernotification_inputid']:'';
$this->cfg['usernotification_subject'] = isset($cfg['usernotification_subject'])?$cfg['usernotification_subject']:'';
$this->cfg['usernotification_message'] = isset($cfg['usernotification_message'])?preg_replace('#<br(\s*)/>|<br(\s*)>#i', "\r\n",$cfg['usernotification_message']):'';
$this->cfg['form_name'] = isset($cfg['form_name'])?$cfg['form_name']:'';
$this->cfg['form_errormessage_captcha'] = isset($cfg['form_errormessage_captcha'])?$cfg['form_errormessage_captcha']:'';
$this->cfg['form_errormessage_emptyfield'] = isset($cfg['form_errormessage_emptyfield'])?$cfg['form_errormessage_emptyfield']:'';
$this->cfg['form_errormessage_invalidemailaddress'] = isset($cfg['form_errormessage_invalidemailaddress'])?$cfg['form_errormessage_invalidemailaddress']:'';
$this->cfg['form_validationmessage'] = isset($cfg['form_validationmessage'])?$cfg['form_validationmessage']:'';
$this->cfg['form_redirecturl'] = isset($cfg['form_redirecturl'])?$cfg['form_redirecturl']:'';
$this->dash_line = '--------------------------------------------------------------';
$this->mail_content_type_format = 'plaintext'; // html
if($this->mail_content_type_format == 'plaintext')
{
$this->mail_content_type_format_charset = 'Content-type: text/plain; charset=utf-8';
$this->mail_line_break = "\r\n";
}
if($this->mail_content_type_format == 'html')
{
$this->mail_content_type_format_charset = 'Content-type: text/html; charset=utf-8';
$this->mail_line_break = "<br />";
}
/**
* USER NOTIFICATION MAIL FORMAT
*/
$this->cfg['usernotification_format'] = isset($cfg['usernotification_format'])?$cfg['usernotification_format']:'';
if($this->cfg['usernotification_format'] == 'plaintext')
{
$this->mail_content_type_format_charset_usernotification = 'Content-type: text/plain; charset=utf-8';
$this->mail_line_break_usernotification = "\r\n";
}
if($this->cfg['usernotification_format'] == 'html')
{
$this->mail_content_type_format_charset_usernotification = 'Content-type: text/html; charset=utf-8';
$this->mail_line_break_usernotification = "<br />";
}
$this->merge_post_index = 0;
$this->demo = 0;
$this->envato_link = '';
}
function sendMail($param)
{
$count_files_to_attach = 0;
// grab and insert the form URL in the notification message
$form_url = (@$_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://';
if($_SERVER['SERVER_PORT'] != '80')
{
$form_url .= $_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].rawurlencode($_SERVER['SCRIPT_NAME']);
}
else
{
$form_url .= $_SERVER['SERVER_NAME'].rawurlencode($_SERVER['SCRIPT_NAME']);
}
$form_url = str_replace('%2F', '/', $form_url);
$form_url_exp = explode('/', $form_url);
// remove contactform/inc/form-validation.php
$pattern_slash = $form_url_exp[count($form_url_exp)-3].'/'.$form_url_exp[count($form_url_exp)-2].'/'.$form_url_exp[count($form_url_exp)-1];
$form_url = str_replace($pattern_slash, '', $form_url);
if($this->cfg['timezone'])
{
date_default_timezone_set($this->cfg['timezone']);
}
// g:i A | 01:37 AM
// G:i | 13:37
$mail_body = $this->cfg['adminnotification_subject'].': '.@date("F jS, Y, G:i")
.$this->mail_line_break.$this->mail_line_break.$this->cfg['form_name']
.$this->mail_line_break.$this->mail_line_break.'Form URL: '
.$this->mail_line_break.$form_url
.$this->mail_line_break.$this->dash_line;
if($this->merge_post)
{
foreach($this->merge_post as $value)
{
if(
isset($value['element_type']) && $value['element_type'] == 'upload'
&& isset($value['filename']) && $value['filename']
)
{
if( isset($value['deletefile']) && ($value['deletefile'] == 1 || $value['deletefile'] == 2) )
{
$count_files_to_attach++;
}
$explode_requesturi = explode('/',$_SERVER['REQUEST_URI']);
//print_r($explode_requesturi);
$explode_requesturi = explode('/',$_SERVER['SCRIPT_NAME']);
//print_r($explode_requesturi);
$inc_form_validation = $explode_requesturi[count($explode_requesturi)-2].'/'.$explode_requesturi[count($explode_requesturi)-1] ;
$install_dir = str_replace($inc_form_validation,'',$_SERVER['SCRIPT_NAME']);
$mail_body .= $this->mail_line_break.$this->mail_line_break.$value['elementlabel_value'].': '.$value['element_value'];
// No file link if we delete the file after the upload
// 1: File Attachment + Download Link
// 2: File Attachment Only
if( isset($value['deletefile']) && ($value['deletefile'] == 1 || $value['deletefile'] == 3) )
{
$mail_body .= $this->mail_line_break
.'http://'.$_SERVER['SERVER_NAME']
.str_replace('%2F', '/', rawurlencode($install_dir.'upload/'.$value['element_value']));
}
}
else{
$mail_body .= $this->mail_line_break.$this->mail_line_break.$value['elementlabel_value'].': '.$value['element_value'];
}
}
}
$mail_body .= $this->mail_line_break.$this->mail_line_break.$this->dash_line;
$mail_body .= $this->mail_line_break.'IP address: '.$_SERVER['REMOTE_ADDR'];
$mail_body .= $this->mail_line_break.'Host: '.gethostbyaddr($_SERVER['REMOTE_ADDR']);
if(preg_match('#html#', $this->mail_content_type_format_charset))
{
$mail_body = nl2br($mail_body);
}
if($this->demo != 1)
{
// for the admin: if the user provides his email address, it will appear in the "from" field
$param['reply_emailaddress'] = (isset($param['reply_emailaddress']) && $param['reply_emailaddress'])?$param['reply_emailaddress']:$this->cfg['email_address'];
// for the admin: if the user provides his email address, it will appear in the "reply-to" field
$replyto_name = $param['reply_emailaddress']?$param['reply_emailaddress']:'';
$replyto_address = $param['reply_emailaddress']?$param['reply_emailaddress']:'';
$mailheaders_options = array(
'from'=>array('name'=>$param['reply_emailaddress'], 'address'=>$param['reply_emailaddress']),
'replyto'=>array('name'=>$replyto_name, 'address'=>$replyto_address),
'cc'=>array('address'=>$this->cfg['email_address_cc']),
'bcc'=>array('address'=>$this->cfg['email_address_bcc'])
);
$mailheaders = $this->getMailHeaders($mailheaders_options);
//if(!isset($param['uploads']) || !$param['uploads'])
if(!$count_files_to_attach)
{
$mailheaders .= $this->mail_content_type_format_charset."\r\n";
$mailmessage = $mail_body;
} else
{
// boundary
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
// headers for attachment
$mailheaders .= "MIME-Version: 1.0\n"
."Content-Type: multipart/mixed;\n"
." boundary=\"{$mime_boundary}\"";
// multipart boundary
$mailmessage = "This is a multi-part message in MIME format.\n\n"
."--{$mime_boundary}\n"
.$this->mail_content_type_format_charset."\n"
."Content-Transfer-Encoding: 7bit\n\n"
.$mail_body
."\n\n";
$mailmessage .= "--{$mime_boundary}\n";
// preparing attachments
$count_attached_file = 0;
foreach($this->merge_post as $value)
{
if(
isset($value['element_type']) && $value['element_type'] == 'upload'
&& isset($value['filename']) && $value['filename']
&& isset($value['deletefile']) && ($value['deletefile'] == 1 || $value['deletefile'] == 2)
)
{
$count_attached_file++;
$file = fopen('../upload/'.$value['filename'],"rb");
$data = fread($file,filesize('../upload/'.$value['filename']));
fclose($file);
$data = chunk_split(base64_encode($data));
$mailmessage .= 'Content-Type: {"application/octet-stream"};'."\n" . ' name="'.$value['filename'].'"'."\n"
.'Content-Disposition: attachment;'."\n" . ' filename="'.$value['filename'].'"'."\n"
.'Content-Transfer-Encoding: base64'."\n\n" . $data . "\n\n";
// "--" must be added for the last file, or an empty file will be also attached in the message
if($count_attached_file == $count_files_to_attach)
{
$mailmessage .= "--{$mime_boundary}--\n";
} else{
$mailmessage .= "--{$mime_boundary}\n";
}
// delete attached file?
// this is different from deleting the file when the user deletes the file himself in the from: check form-validation.php for this (in form-validation.php because the file must be deleted even if sendMail() is not called - when there are errors for example)
if(isset($value['deletefile']) && $value['deletefile'] == 2)
{
@unlink('../upload/'.$value['filename']);
}
}
} // foreach
} // if(!$count_files_to_attach)
@mail($this->cfg['email_address'], $this->cfg['adminnotification_subject'], $mailmessage, $mailheaders);
}
}
function sendMailReceipt($value)
{
if($this->demo != 1)
{
$mailheaders_options = array(
'from'=>array('name'=>$this->cfg['email_from'], 'address'=>$this->cfg['email_address']),
'replyto'=>array('name'=>$this->cfg['email_from'], 'address'=>$this->cfg['email_address'])
);
$mailheaders = $this->getMailHeaders($mailheaders_options)
.$this->mail_content_type_format_charset_usernotification."\r\n"
;
$mail_body = '';
$mail_body .= $this->cfg['usernotification_message'];
if($this->cfg['usernotification_insertformdata'])
{
$mail_body .= $this->mail_line_break_usernotification."--------------------------------------------------------";
foreach($this->merge_post as $form_data)
{
$mail_body .= $this->mail_line_break_usernotification.$this->mail_line_break_usernotification.$form_data['elementlabel_value'].': '.$form_data['element_value'];
}
}
if(preg_match('#html#', $this->mail_content_type_format_charset_usernotification))
{
$mail_body = nl2br($mail_body);
}
@mail($value['email_address'], $this->cfg['usernotification_subject'], $mail_body, $mailheaders);
}
}
function mergePost($value)
{
$this->merge_post[$this->merge_post_index]['element_id'] = $value['element_id'];
$this->merge_post[$this->merge_post_index]['element_value'] = $this->quote_smart(trim($value['element_value']));
$this->merge_post[$this->merge_post_index]['elementlabel_value'] = $this->quote_smart(trim($value['elementlabel_value']));
$this->merge_post[$this->merge_post_index]['elementlabel_id'] = $this->quote_smart(trim($value['elementlabel_id']));
if(isset($value['element_type']) && $value['element_type'])
{ // if element_type == upload, we add the download link in the mail body message
$this->merge_post[$this->merge_post_index]['element_type'] = trim($value['element_type']);
}
if(isset($value['filename']) && $value['filename'])
{
$this->merge_post[$this->merge_post_index]['filename'] = $this->quote_smart(trim($value['filename']));
}
if(isset($value['deletefile']) && $value['deletefile'])
{
$this->merge_post[$this->merge_post_index]['deletefile'] = trim($value['deletefile']);
}
$this->merge_post_index++;
}
function isEmail($email)
{
$atom = '[-a-z0-9\\_]'; // authorized caracters before @
$domain = '([a-z0-9]([-a-z0-9]*[a-z0-9]+)?)'; // authorized caracters after @
$regex = '/^' . $atom . '+' .
'(\.' . $atom . '+)*' .
'@' .
'(' . $domain . '{1,63}\.)+' .
$domain . '{2,63}$/i';
// test de l'adresse e-mail
return preg_match($regex, trim($email)) ? 1 : 0;
}
function quote_smart($value)
{
if(get_magic_quotes_gpc())
{
$value = stripslashes($value);
}
return $value;
}
function getMailHeaders($mailheaders_options)
{
$mailheaders_options['from']['name'] = isset($mailheaders_options['from']['name'])?$mailheaders_options['from']['name']:$mailheaders_options['from']['address'];
$mailheaders_options['cc']['address'] = isset($mailheaders_options['cc']['address'])?$mailheaders_options['cc']['address']:'';
$mailheaders_options['bcc']['address'] = isset($mailheaders_options['bcc']['address'])?$mailheaders_options['bcc']['address']:'';
$from_name = $mailheaders_options['from']['name']?$mailheaders_options['from']['name']:$mailheaders_options['from']['address'];
if($this->isEmail($from_name))
{
// From: user@domain.com <user@domain.com> is invalid => user@domain.com
$mail_header_from = 'From: '.$from_name."\r\n";
$mail_header_replyto = 'Reply-To: '.$from_name."\r\n";
} else
{
$mail_header_from = 'From: '.$from_name.'<'.$mailheaders_options['from']['address'].'>'."\r\n";
$mail_header_replyto = 'Reply-To: '.$from_name.'<'.$mailheaders_options['from']['address'].'>'."\r\n";
}
$mail_header_cc = '';
if($mailheaders_options['cc']['address'])
{
$explode_email = explode(',', $mailheaders_options['cc']['address']);
$cc = '';
foreach($explode_email as $email_value)
{
$cc .= $email_value.",";
}
$mail_header_cc .= 'Cc: '.substr($cc, 0, -1)."\r\n";
}
$mail_header_bcc = '';
if($mailheaders_options['bcc']['address'])
{
$explode_email = explode(',', $mailheaders_options['bcc']['address']);
$bcc = '';
foreach($explode_email as $email_value)
{
$bcc .= $email_value.",";
}
$mail_header_bcc .= 'Bcc: '.substr($bcc, 0, -1)."\r\n";
}
$mailheaders = $mail_header_from
.$mail_header_cc
.$mail_header_bcc
.$mail_header_replyto
.'MIME-Version: 1.0'."\r\n"
.'X-Mailer: PHP/'.phpversion()."\r\n"
;
/*
Examples of headers that should work would be:
From: user@domain.com will work
From: "user" <user@domain.com>
Examples of headers that will NOT work:
From: "user@domain.com"
From: user @ domain.com
From: user@domain.com <user@domain.com>
*/
// echo $mailheaders;
return($mailheaders);
}
}
/**
* NO SPACES AFTER THIS LINE TO PREVENT
* Warning: Cannot modify header information
*/
?>
答案 0 :(得分：0)
蜜罐的想法是大多数垃圾邮件程序无法执行javascript。所以你要做下面的事情：
因此，您确保禁用javascript的人（如spambot）会看到输入字段，并可以手动插入问题的答案。
所有这些实施点可能如下所示：
<?php
$formErrorMsgs = array();
if(isset($_GET['send'])) {
if(!isset($_POST['byebye_answer']) || $_POST['byebye_answer'] != 'stackoverflow')
$formErrorMsgs[] = 'Please enter the correct answer for the antispam question';
// all the other checks for the form input
if(count($formErrorMsgs) <= 0) {
// do the database insert or whatever here
// redirect to another page or something like that afterwards
}
}
?>
<form method="post" action="?send">
<?php echo (count($formErrorMsgs) > 0)?'<ul><li>' , implode('</li><li>', $formErrorMsgs) , '</li></ul>':null; ?>
<!-- all the regular input fields -->
<dl class="byebye">
<dt><label for="byebye-answer">Type in <b>stackoverflow</b></label></dt>
<dd><input type="text" id="byebye-answer" name="byebye_answer"></dd>
</dl>
</form>
<script>
// if you're using jQuery do this
(function() {
$('#byebye-answer').val('stackoverflow');
$('.byebye').hide();
})();
</script>