论坛 › Web 开发综合讨论 › URL地址合法性检查

sam 发表于 2008-10-17 17:52:46

URL地址合法性检查

这个类可以用来检查URL地址的合法性,目前支持ftp,file,http,https,gopher,news,nntp,telnet,wais
class urlcheck{
var $regex = array(//协议名(注意在这里必须写成小写) => 对应的正则表达式
'ftp'
=> '$this->ftpurl',
'file' => '$this->fileurl',
'http' =>
'$this->httpurl',
'https' => '$this->httpurl',
'gopher' =>
'$this->gopherurl',
'news' => '$this->newsurl',
'nntp' =>
'$this->nntpurl',
'telnet' => '$this->telneturl',
'wais' =>
'$this->waisurl'
);

var $lowalpha;
var $hialpha;
var
$alpha;
var $digit;
var $safe;
var $extra;
var $national;
var
$punctuation;
var $reserved;
var $hex;
var $escape;
var
$unreserved;
var $uchar;
var $xchar;
var $digits;

var
$urlpath;
var $password;
var $user;
var $port;
var
$hostnumber;
var $alphadigit;
var $toplabel;
var $domainlabel;
var
$hostname;
var $host;
var $hostport;
var $login;

//ftp
var
$ftptype;
var $fsegment;
var $fpath;
var $ftpurl;

//file
var
$fileurl;

//http,https
var $search;
var $hsegment;
var
$hpath;
var $httpurl;

//gopher
var $gopher_string;
var
$selector;
var $gtype;
var $gopherurl;

//news
var
$article;
var $group;
var $grouppart;
var
$newsurl;

//nntp
var $nntpurl;

//telnet
var
$telneturl;

//wais
var $wpath;
var $wtype;
var $database;
var
$waisdoc;
var $waisindex;
var $waisdatabase;
var
$waisurl;

function check($url){
$pos =
@strpos($url,':',1);
if($pos<1) return false;
$prot =
substr($url,0,$pos);
if(!isset($this->regex[$prot])) return
false;
eval('$regex = '.$this->regex[$prot].';');
return
ereg('^'.$regex.'
,$url);
}

function
urlcheck(){
$this->lowalpha = '';
$this->hialpha =
'';
$this->alpha =
'('.$this->lowalpha.'|'.$this->hialpha.')';
$this->digit =
'';
$this->safe = '[$.+_-]';
$this->extra =
'[*()\'!,]';
$this->national =
'([{}|\^~`]|\\[|\\])';
$this->punctuation =
'[<>#%"]';
$this->reserved = '[?;/:@&=]';
$this->hex =
'('.$this->digit.'|)';
$this->escape =
'(%'.$this->hex.'{2})';
$this->unreserved =
'('.$this->alpha.'|'.$this->digit.'|'.$this->safe.'|'.$this->extra.')';
$this->uchar
= '('.$this->unreserved.'|'.$this->escape.')';
$this->xchar =
'('.$this->unreserved.'|'.$this->reserved.'|'.$this->escape.')';
$this->digits
= '('.$this->digit.'+)';

$this->urlpath =
'('.$this->xchar.'*)';
$this->password =
'(('.$this->uchar.'|[?;&=]'.')*)';
$this->user =
'(('.$this->uchar.'|[?;&=]'.')*)';
$this->port =
$this->digits;
$this->hostnumber =
'('.$this->digits.'.'.$this->digits.'.'.$this->digits.'.'.$this->digits.')';
$this->alphadigit
= '('.$this->alpha.'|'.$this->digit.')';
$this->toplabel =
'('.$this->alpha.'|('.$this->alpha.'('.$this->alphadigit.'|-)*'.$this->alphadigit.'))';
$this->domainlabel
=
'('.$this->alphadigit.'|('.$this->alphadigit.'('.$this->alphadigit.'|-)*'.$this->alphadigit.'))';
$this->hostname
= '(('.$this->domainlabel.'\\.)*'.$this->toplabel.')';
$this->host =
'('.$this->hostname.'|'.$this->hostnumber.')';
$this->hostport =
'('.$this->host.'(:'.$this->port.')?)';
$this->login =
'(('.$this->user.'(:'.$this->password.')?@)?'.$this->hostport.')';

$this->ftptype
= '';
$this->fsegment =
'(('.$this->uchar.'|[?:@&=])*)';
$this->fpath =
'('.$this->fsegment.'(/'.$this->fsegment.')*)';
$this->ftpurl =
'(://'.$this->login.'(/'.$this->fpath.'(;='.$this->ftptype.')?)?)';

$this->fileurl
=
'(://('.$this->host.'|)?/'.$this->fpath.')';

$this->search
= '(('.$this->uchar.'|[;:@&=])*)';
$this->hsegment =
'(('.$this->uchar.'|[;:@&=])*)';
$this->hpath =
'('.$this->hsegment.'(/'.$this->hsegment.')*)';
$this->httpurl =
'(?://'.$this->hostport.'(/'.$this->hpath.'([?]'.$this->search.')?)?)';

$this->gopher_string
= '('.$this->xchar.'*)';
$this->selector =
'('.$this->xchar.'*)';
$this->gtype =
$this->xchar;
$this->gopherurl =
'(://'.$this->hostport.'(/('.$this->gtype.'('.$this->selector.'(%09'.$this->search.'(%09'.$this->gopher_string.')?)?)?)?)?)';

$this->article
= '(('.$this->uchar.'|[;/?:&=])+@'.$this->host.')';
$this->group
=
'('.$this->alpha.'('.$this->alpha.'|'.$this->digit.'|[-.+_])*)';
$this->grouppart
= '([*]|'.$this->group.'|'.$this->article.')';
$this->newsurl =
'(:'.$this->grouppart.')';

$this->nntpurl =
'(://'.$this->hostport.'/'.$this->group.'(/'.$this->digits.')?)';

$this->telneturl
= '(://'.$this->login.'/?)';

$this->wpath =
'('.$this->uchar.'*)';
$this->wtype =
'('.$this->uchar.'*)';
$this->database =
'('.$this->uchar.'*)';
$this->waisdoc =
'(://'.$this->hostport.'/'.$this->database.'/'.$this->wtype.'/'.$this->wpath.')';
$this->waisindex
=
'(://'.$this->hostport.'/'.$this->database.'[?]'.$this->search.')';
$this->waisdatabase
=
'(://'.$this->hostport.'/'.$this->database.')';
$this->waisurl
=
'('.$this->waisdatabase.'|'.$this->waisindex.'|'.$this->waisdoc.')';
}
}

protang 发表于 2008-10-17 21:15:47

好像我目前还不需要这样的类， 不过先收藏再说

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