Author Topic: [Mod] check if mail-address is valid (doesn't work) (now may be working :-))  (Read 21526 times)

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Offline effemmess

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UPDATE 10.07.2013
10 years later some additions - see below

UPDATE 17.11.2003
Now it works with all providers...
:) :) :)
==============================================

Hi,

I edited the function check_email() in functions.php to check if a email-address is valid or not... With this extended version of this function many invalid mail-entries will be rejected in registration-form :) (but not all, because yahoo,... :( ).

I donīt know, if this mod works if you configured your 4images to use smtp. I think, ther must be some edits for this... Try it out and tell me your results (and your solution! ;) ).

to do:
replace in .../4images/includes/functions.php:
Code: [Select]
function check_email($email) {
...
}



with:

Code: [Select]
function check_email($email) {
  $state=0;
  $helo_server=gethostbyaddr(gethostbyname($_SERVER["HTTP_HOST"]));
  $from=$_SERVER["SERVER_ADMIN"];
  if (preg_match('/^[-!#$%&\'*+\\.\/0-9=?A-Z^_`{|}~]+@([-0-9A-Z]+\.)+([0-9A-Z]){2,4}$/i', $email) && !mailcheck($email, 2)) {
    list($mailbox,$domain) = explode('@',$email,2);
    // find preferred mailserver
    if(getmxrr($domain,$mailhosts,$pref)){
      array_multisort($mailhosts,$pref);
    }
    $mailhosts[]=$domain;
    foreach($mailhosts as $hosts){
      if($connection) {
        fputs($connection, "QUIT\r\n");
        fclose ($connection);
      }
      $mailserver =  $hosts;
      // Open an SMTP connection
      $connection = @fsockopen ($mailserver, 25, $errno, $errstr, 1);
      if (!$connection) continue;
      socket_set_timeout($connection, 3);
      $res=get_lines($connection);
      if(checkres($res) != "220") continue;

      // Introduce ourselves
      $sendstring="EHLO ".$helo_server."\r\n";
      fputs($connection,$sendstring);
      $res=get_lines($connection);
      if(checkres($res) != "250"){
        $sendstring="HELO ".$helo_server."\r\n";
        fputs($connection,$sendstring);
        $res=get_lines($connection);
      }
      if(checkres($res) != "250") continue;
      
      // Envelope from
      $sendstring="MAIL FROM: <".$from.">\r\n";
      fputs($connection,$sendstring);
      $res=get_lines($connection);
      if(checkres($res) != "250") continue;

      // Envelope to
      $sendstring="RCPT TO: <".trim($email).">\r\n";
      fputs($connection,$sendstring);
      $res=get_lines($connection);
      if(checkres($res) != "250") continue;

/*
    // Verify address
    $sendstring="VRFY <".$mailbox.">\r\n";
    print_res($sendstring,"Q");
    fputs($connection,$sendstring);
    $res=get_lines($connection);
    print_res($res,"A");
    if(checkres($res) != "250") continue;

    // The message
    $sendstring="DATA\r\n";
    print_res($sendstring,"Q");
    fputs($connection,$sendstring);
    $res=get_lines($connection);
    print_res($res,"A");
    if(checkres($res) != "354") continue;

    // Send To:, From:, Subject:, other headers, blank line, message, and finish
    // with a period on its own line.
    $sendstring="To: ".trim($_POST['p_email'])."\r\nFrom: $from\r\nSubject: $subject\r\n$headers\r\n\r\n$message\r\n.\r\n";
    print_res($sendstring,"Q");
    fputs($connection,$sendstring);
    $res=get_lines($connection);
    print_res($res,"A");
    if(checkres($res) != "250") continue;
*/
  
      // Say bye bye
      $sendstring="QUIT\r\n";
      fputs($connection,$sendstring);
      $res=get_lines($connection);
      if(checkres($res) != "250" && checkres($res) != "221") continue;
      fclose ($connection);
      // It worked! So break out of the loop which tries all the mail exchangers.
      $state=1;
      break;
    }      
  }
  return $state;
}

function mailcheck($Addr, $Level, $Timeout = 15000) {
    
//  Valid Top-Level Domains
    $gTLDs = "com:net:org:edu:gov:mil:int:arpa:aero:biz:coop:info:museum:name:";
    $CCs   = "ad:ae:af:ag:ai:al:am:an:ao:aq:ar:as:at:au:aw:az:ba:bb:bd:be:bf:".
             "bg:bh:bi:bj:bm:bn:bo:br:bs:bt:bv:bw:by:bz:ca:cc:cf:cd:cg:ch:ci:".
             "ck:cl:cm:cn:co:cr:cs:cu:cv:cx:cy:cz:de:dj:dk:dm:do:dz:ec:ee:eg:".
             "eh:er:es:et:fi:fj:fk:fm:fo:fr:fx:ga:gb:gd:ge:gf:gh:gi:gl:gm:gn:".
             "gp:gq:gr:gs:gt:gu:gw:gy:hk:hm:hn:hr:ht:hu:id:ie:il:in:io:iq:ir:".
             "is:it:jm:jo:jp:ke:kg:kh:ki:km:kn:kp:kr:kw:ky:kz:la:lb:lc:li:lk:".
             "lr:ls:lt:lu:lv:ly:ma:mc:md:mg:mh:mk:ml:mm:mn:mo:mp:mq:mr:ms:mt:".
             "mu:mv:mw:mx:my:mz:na:nc:ne:nf:ng:ni:nl:no:np:nr:nt:nu:nz:om:pa:".
             "pe:pf:pg:ph:pk:pl:pm:pn:pr:pt:pw:py:qa:re:ro:ru:rw:sa:sb:sc:sd:".
             "se:sg:sh:si:sj:sk:sl:sm:sn:so:sr:st:su:sv:sy:sz:tc:td:tf:tg:th:".
             "tj:tk:tm:tn:to:tp:tr:tt:tv:tw:tz:ua:ug:uk:um:us:uy:uz:va:vc:ve:".
             "vg:vi:vn:vu:wf:ws:ye:yt:yu:za:zm:zr:zw:";
    
//  The countries can have their own 'TLDs', e.g. mydomain.com.au
    $cTLDs = "com:net:org:edu:gov:mil:co:ne:or:ed:go:mi:aero:biz:coop:info:museum:name:";

    $fail = 0;
    
//  Shift the address to lowercase to simplify checking and trim
    $Addr = trim(strtolower($Addr));
    
//  Check for spaces
    if (ereg(" ", $Addr)) $fail = 1;

//  Split the Address into user and domain parts
    $UD = explode("@", $Addr);
    if (sizeof($UD) != 2 || !$UD[0]) $fail = 1;

//  Split the domain part into its Levels
    $Levels = explode(".", $UD[1]); $sLevels = sizeof($Levels);
    if (!$Levels[0] || !$Levels[1]) $fail = 1;

//  Get the TLD, strip off trailing ] } ) > and check the length
    $tld = $Levels[$sLevels-1];
    $tld = ereg_replace("[>)}]$|]$", "", $tld);
    if (strlen($tld) < 2
    || (strlen($tld) > 3 && !ereg(":$tld:", ":arpa:aero:coop:info:museum:name:"))) $fail = 1;

    $Level--;

//  If the string after the last dot isn't in the generic TLDs or country codes, it's invalid.
    if ($Level && !$fail) {
    $Level--;
    if (!ereg($tld.":", $gTLDs) && !ereg($tld.":", $CCs)) $fail = 2;
    }

//  If it's a country code, check for a country TLD; add on the domain name.
    if ($Level && !$fail) {
    $cd = $sLevels - 2; $domain = $Levels[$cd].".".$tld;
    if (ereg($Levels[$cd].":", $cTLDs)) { $cd--; $domain = $Levels[$cd].".".$domain; }
    }
    echo $fail;
    return $fail;
} //Mailcheck

 


Have fun!

[EDITED by V@no]
this mod is missing get_lines() function, because of that it doesn't work.

[EDITED by effemmess]
Here are some functions I used in some scripts, also the missing get_lines() function. I donīt know if it now works, at that time it worked for me. But now I havenīt a 4images-system, so I canīt test it.  :oops:

Code: [Select]
function get_lines($fp){
  $res = "";
  while($data = fgets($fp,515)) {
    $res .= $data;
    if(substr($data,3,1) == " ") { break; }
  }
return $res;
}

function checkres($res){
return substr($res,0,3);
}

function print_res($res,$typus){
  if ($typus=="A") {
    printf ("<b>Antwort:</b><br>");
  } elseif ($typus=="Q") {
    printf ("<b>Frage:</b><br>");
  }
  printf ($res."<br />");
return;
}


Have fun!
« Last Edit: July 10, 2013, 12:53:44 AM by effemmess »

Offline JensF

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Re: [Mod] check if mail-address is valid
« Reply #1 on: June 29, 2005, 12:03:08 AM »
Hi,

I have insert this mod and i have a question to this.

When i give a mail adress called test@hansi.de they say me that is a wrong mail.

But it give a Domain called www.hansi.de and the admin can have the mail test@hansi.de. But the Mod say its a wrong mail....

And i when i test some other Mails (valid or not) i become a white page with a 0 on the left top corner...
Mit freundlichem Gruß
Jens Funk



-> Sorry for my bad English <-

Offline manyaq

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Re: [Mod] check if mail-address is valid
« Reply #2 on: April 19, 2007, 03:58:10 PM »
Hi,

I have insert this mod and i have a question to this.

When i give a mail adress called test@hansi.de they say me that is a wrong mail.

But it give a Domain called www.hansi.de and the admin can have the mail test@hansi.de. But the Mod say its a wrong mail....

And i when i test some other Mails (valid or not) i become a white page with a 0 on the left top corner...
Code: [Select]
function mailcheck($Addr, $Level, $Timeout = 15000) {
   
//  Valid Top-Level Domains
    $gTLDs = "com:net:org:edu:gov:mil:int:arpa:aero:biz:coop:info:museum:name:";
    $CCs   = "ad:ae:af:ag:ai:al:am:an:ao:aq:ar:as:at:au:aw:az:ba:bb:bd:be:bf:".
             "bg:bh:bi:bj:bm:bn:bo:br:bs:bt:bv:bw:by:bz:ca:cc:cf:cd:cg:ch:ci:".
             "ck:cl:cm:cn:co:cr:cs:cu:cv:cx:cy:cz:de:dj:dk:dm:do:dz:ec:ee:eg:".
             "eh:er:es:et:fi:fj:fk:fm:fo:fr:fx:ga:gb:gd:ge:gf:gh:gi:gl:gm:gn:".
             "gp:gq:gr:gs:gt:gu:gw:gy:hk:hm:hn:hr:ht:hu:id:ie:il:in:io:iq:ir:".
             "is:it:jm:jo:jp:ke:kg:kh:ki:km:kn:kp:kr:kw:ky:kz:la:lb:lc:li:lk:".
             "lr:ls:lt:lu:lv:ly:ma:mc:md:mg:mh:mk:ml:mm:mn:mo:mp:mq:mr:ms:mt:".
             "mu:mv:mw:mx:my:mz:na:nc:ne:nf:ng:ni:nl:no:np:nr:nt:nu:nz:om:pa:".
             "pe:pf:pg:ph:pk:pl:pm:pn:pr:pt:pw:py:qa:re:ro:ru:rw:sa:sb:sc:sd:".
             "se:sg:sh:si:sj:sk:sl:sm:sn:so:sr:st:su:sv:sy:sz:tc:td:tf:tg:th:".
             "tj:tk:tm:tn:to:tp:tr:tt:tv:tw:tz:ua:ug:uk:um:us:uy:uz:va:vc:ve:".
             "vg:vi:vn:vu:wf:ws:ye:yt:yu:za:zm:zr:zw:";
   
//  The countries can have their own 'TLDs', e.g. mydomain.com.au
    $cTLDs = "com:net:org:edu:gov:mil:co:ne:or:ed:go:mi:aero:biz:coop:info:museum:name:";

    $fail = 0;
   
//  Shift the address to lowercase to simplify checking and trim
    $Addr = trim(strtolower($Addr));
   
//  Check for spaces
    if (ereg(" ", $Addr)) $fail = 1;

//  Split the Address into user and domain parts
    $UD = explode("@", $Addr);
    if (sizeof($UD) != 2 || !$UD[0]) $fail = 1;

//  Split the domain part into its Levels
    $Levels = explode(".", $UD[1]); $sLevels = sizeof($Levels);
    if (!$Levels[0] || !$Levels[1]) $fail = 1;

//  Get the TLD, strip off trailing ] } ) > and check the length
    $tld = $Levels[$sLevels-1];
    $tld = ereg_replace("[>)}]$|]$", "", $tld);
    if (strlen($tld) < 2
    || (strlen($tld) > 3 && !ereg(":$tld:", ":arpa:aero:coop:info:museum:name:"))) $fail = 1;

    $Level--;

//  If the string after the last dot isn't in the generic TLDs or country codes, it's invalid.
    if ($Level && !$fail) {
    $Level--;
    if (!ereg($tld.":", $gTLDs) && !ereg($tld.":", $CCs)) $fail = 2;
    }

//  If it's a country code, check for a country TLD; add on the domain name.
    if ($Level && !$fail) {
    $cd = $sLevels - 2; $domain = $Levels[$cd].".".$tld;
    if (ereg($Levels[$cd].":", $cTLDs)) { $cd--; $domain = $Levels[$cd].".".$domain; }
    }
    echo $fail;
    return $fail;
} //Mailcheck

 
change the code with below
Code: [Select]
function mailcheck($Addr, $Level, $Timeout = 15000) {
   
//  Valid Top-Level Domains
    $gTLDs = "com:net:org:edu:gov:mil:int:arpa:aero:biz:coop:info:museum:name:de:";
    $CCs   = "ad:ae:af:ag:ai:al:am:an:ao:aq:ar:as:at:au:aw:az:ba:bb:bd:be:bf:".
             "bg:bh:bi:bj:bm:bn:bo:br:bs:bt:bv:bw:by:bz:ca:cc:cf:cd:cg:ch:ci:".
             "ck:cl:cm:cn:co:cr:cs:cu:cv:cx:cy:cz:de:dj:dk:dm:do:dz:ec:ee:eg:".
             "eh:er:es:et:fi:fj:fk:fm:fo:fr:fx:ga:gb:gd:ge:gf:gh:gi:gl:gm:gn:".
             "gp:gq:gr:gs:gt:gu:gw:gy:hk:hm:hn:hr:ht:hu:id:ie:il:in:io:iq:ir:".
             "is:it:jm:jo:jp:ke:kg:kh:ki:km:kn:kp:kr:kw:ky:kz:la:lb:lc:li:lk:".
             "lr:ls:lt:lu:lv:ly:ma:mc:md:mg:mh:mk:ml:mm:mn:mo:mp:mq:mr:ms:mt:".
             "mu:mv:mw:mx:my:mz:na:nc:ne:nf:ng:ni:nl:no:np:nr:nt:nu:nz:om:pa:".
             "pe:pf:pg:ph:pk:pl:pm:pn:pr:pt:pw:py:qa:re:ro:ru:rw:sa:sb:sc:sd:".
             "se:sg:sh:si:sj:sk:sl:sm:sn:so:sr:st:su:sv:sy:sz:tc:td:tf:tg:th:".
             "tj:tk:tm:tn:to:tp:tr:tt:tv:tw:tz:ua:ug:uk:um:us:uy:uz:va:vc:ve:".
             "vg:vi:vn:vu:wf:ws:ye:yt:yu:za:zm:zr:zw:";
   
//  The countries can have their own 'TLDs', e.g. mydomain.com.au
    $cTLDs = "com:net:org:edu:gov:mil:co:ne:or:ed:go:mi:aero:biz:coop:info:museum:name:";

    $fail = 0;
   
//  Shift the address to lowercase to simplify checking and trim
    $Addr = trim(strtolower($Addr));
   
//  Check for spaces
    if (ereg(" ", $Addr)) $fail = 1;

//  Split the Address into user and domain parts
    $UD = explode("@", $Addr);
    if (sizeof($UD) != 2 || !$UD[0]) $fail = 1;

//  Split the domain part into its Levels
    $Levels = explode(".", $UD[1]); $sLevels = sizeof($Levels);
    if (!$Levels[0] || !$Levels[1]) $fail = 1;

//  Get the TLD, strip off trailing ] } ) > and check the length
    $tld = $Levels[$sLevels-1];
    $tld = ereg_replace("[>)}]$|]$", "", $tld);
    if (strlen($tld) < 2
    || (strlen($tld) > 3 && !ereg(":$tld:", ":arpa:aero:coop:info:museum:name:"))) $fail = 1;

    $Level--;

//  If the string after the last dot isn't in the generic TLDs or country codes, it's invalid.
    if ($Level && !$fail) {
    $Level--;
    if (!ereg($tld.":", $gTLDs) && !ereg($tld.":", $CCs)) $fail = 2;
    }

//  If it's a country code, check for a country TLD; add on the domain name.
    if ($Level && !$fail) {
    $cd = $sLevels - 2; $domain = $Levels[$cd].".".$tld;
    if (ereg($Levels[$cd].":", $cTLDs)) { $cd--; $domain = $Levels[$cd].".".$domain; }
    }
    echo $fail;
    return $fail;
} //Mailcheck

 

i think just the problem is $gTLDs
 $gTLDs = "com:net:org:edu:gov:mil:int:arpa:aero:biz:coop:info:museum:name:
u have to add just de: at the end
$gTLDs = "com:net:org:edu:gov:mil:int:arpa:aero:biz:coop:info:museum:name:de:

Offline Sebas Bonito

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Re: [Mod] check if mail-address is valid
« Reply #3 on: July 22, 2009, 04:11:03 PM »
After making the registration it will only show "0" on the page.
I've used a email adress like "...@web.de" and I still added the code from JensF.

Offline GaYan

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Re: [Mod] check if mail-address is valid
« Reply #4 on: July 22, 2009, 04:15:14 PM »
Coool Bro.it works  :lol:
I'm Back :)

Offline V@no

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Re: [Mod] check if mail-address is valid
« Reply #5 on: July 22, 2009, 04:56:29 PM »
Coool Bro.it works  :lol:
It does?
the mod uses get_lines() function, which doesn't exist...not sure how it's working for you...
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Offline Sebas Bonito

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Re: [Mod] check if mail-address is valid
« Reply #6 on: July 22, 2009, 05:34:40 PM »
May this MOD needs SMTP?

Offline V@no

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Re: [Mod] check if mail-address is valid
« Reply #7 on: July 23, 2009, 02:25:06 AM »
no, that function is not PHP native...must be left out from the original code effemmess used as reference.

This mod does not work. Until it corrected moved out from mods section.
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Offline Sebas Bonito

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Re: [Mod] check if mail-address is valid
« Reply #8 on: July 23, 2009, 02:27:26 AM »
Now moved out from mods section.

Good, thx!