[squirrelmail.git] / functions / strings.php

<?php
   
   /* $Id$ */

   $strings_php = true;

   //*************************************************************************
   // Count the number of occurances of $needle are in $haystack.
   //*************************************************************************
   function countCharInString($haystack, $needle) {
      $haystack = ereg_replace("[^$needle]","",$haystack);
      return strlen($haystack);
   }

   //*************************************************************************
   // Read from the back of $haystack until $needle is found, or the begining
   //    of the $haystack is reached.  $needle is a single character
   //*************************************************************************
   function readShortMailboxName($haystack, $needle) {
      if ($needle == "") return $haystack;
      if ($needle == ".") $needle = "\.";
      ereg("([^$needle]+)$needle?$", $haystack, $regs);
      return $regs[1];
   }

   //*************************************************************************
   // Read from the back of $haystack until $needle is found, or the begining
   //    of the $haystack is reached.  $needle is a single character
   //*************************************************************************
   function readMailboxParent($haystack, $needle) {
      if ($needle == ".") $needle = "\.";
      ereg("^(.+)$needle([^$needle]+)$needle?$", $haystack, $regs);
      return $regs[1];
   }

   // Searches for the next position in a string minus white space
   function next_pos_minus_white ($haystack, $pos) {
      while (substr($haystack, $pos, 1) == " " ||
             substr($haystack, $pos, 1) == "\t" ||
             substr($haystack, $pos, 1) == "\n" ||
             substr($haystack, $pos, 1) == "\r") {
         if ($pos >= strlen($haystack))
            return -1;
         $pos++;
      }        
      return $pos;        
   }

   // Wraps text at $wrap characters
   // Has a problem with special HTML characters, so call this before
   // you do character translation.
   // Specifically, &#039 comes up as 5 characters instead of 1.
   // This should not add newlines to the end of lines.
   function sqWordWrap(&$line, $wrap) {
      preg_match("/^([\s>]*)([^\s>].*)?$/", $line, $regs);
      $beginning_spaces = $regs[1];
      $words = explode(" ", $regs[2]);

      $i = 0;
      $line = $beginning_spaces;
      
      while ($i < count($words)) {
         // Force one word to be on a line (minimum)
         $line .= $words[$i];
         $line_len = strlen($beginning_spaces) + strlen($words[$i]) +
             strlen($words[$i + 1]) + 2;
         $i ++;
            
         // Add more words (as long as they fit)
         while ($line_len < $wrap && $i < count($words)) {
            $line .= ' ' . $words[$i];
            $i++;
            $line_len += strlen($words[$i]) + 1;
         }
            
         // Skip spaces if they are the first thing on a continued line
         while (!$words[$i] && $i < count($words)) {
            $i ++;
         }

         // Go to the next line if we have more to process            
         if ($i < count($words)) {
            $line .= "\n$beginning_spaces";
         }
      }
   }
   
   
   // Does the opposite of sqWordWrap()
   function sqUnWordWrap(&$body)
   {
       $lines = explode("\n", $body);
       $body = "";
       $PreviousSpaces = "";
       for ($i = 0; $i < count($lines); $i ++)
       {
           preg_match("/^([\s>]*)([^\s>].*)?$/", $lines[$i], $regs);
           $CurrentSpaces = $regs[1];
           $CurrentRest = $regs[2];
           if ($i == 0)
           {
               $PreviousSpaces = $CurrentSpaces;
               $body = $lines[$i];
           }
           else if ($PreviousSpaces == $CurrentSpaces &&  // Do the beginnings match
               strlen($lines[$i - 1]) > 65 &&             // Over 65 characters long
               strlen($CurrentRest))                      // and there's a line to continue with
           {
               $body .= ' ' . $CurrentRest;
           }
           else
           {
               $body .= "\n" . $lines[$i];
               $PreviousSpaces = $CurrentSpaces;
           }
       }
       $body .= "\n";
   }
   

   /** Returns an array of email addresses **/
   /* Be cautious of "user@host.com" */
   function parseAddrs($text) {
      if (trim($text) == "")
         return array();
      $text = str_replace(" ", "", $text);
      $text = ereg_replace('"[^"]*"', "", $text);
      $text = ereg_replace("\([^\)]*\)", "", $text);
      $text = str_replace(",", ";", $text);
      $array = explode(";", $text);
      for ($i = 0; $i < count ($array); $i++) {
			    $array[$i] = eregi_replace ("^.*[<]", "", $array[$i]);
			    $array[$i] = eregi_replace ("[>].*$", "", $array[$i]);
		  }
      return $array;
   }

   /** Returns a line of comma separated email addresses from an array **/
   function getLineOfAddrs($array) {
      if (is_array($array)) {
        $to_line = implode(", ", $array);
        $to_line = trim(ereg_replace(",,+", ",", $to_line));
      } else {
        $to_line = "";
      }
      return $to_line;
   }

   function translateText(&$body, $wrap_at, $charset) {
      global $where, $what; // from searching
		global $url_parser_php;

      if (!isset($url_parser_php)) {
         include "../functions/url_parser.php";
      }
      
      $body_ary = explode("\n", $body);
      $PriorQuotes = 0;
      for ($i=0; $i < count($body_ary); $i++) {
         $line = $body_ary[$i];
         if (strlen($line) - 2 >= $wrap_at) {
            sqWordWrap($line, $wrap_at);  
         }
         $line = charset_decode($charset, $line);
         $line = str_replace("\t", '        ', $line);
         
         parseUrl ($line);
         
         $Quotes = 0;
         $pos = 0;
         while (1)
         {
             if ($line[$pos] == ' ')
             {
                $pos ++;
             }
             else if (strpos($line, '&gt;', $pos) === $pos)
             {
                $pos += 4;
                $Quotes ++;
             }
             else
             {
                 break;
             }
         }
         
         if ($Quotes > 1)
            $line = "<FONT COLOR=FF0000>$line</FONT>";
         elseif ($Quotes)
            $line = "<FONT COLOR=800000>$line</FONT>";

         $body_ary[$i] = $line;
      }
      $body = "<pre>" . implode("\n", $body_ary) . "</pre>";
   }

   /* SquirrelMail version number -- DO NOT CHANGE */
   $version = "1.0pre3 [cvs]";


   function find_mailbox_name ($mailbox) {
/*
      $mailbox = trim($mailbox);
      if (substr($mailbox, strlen($mailbox)-1, strlen($mailbox)) == "\"") {
         $mailbox = substr($mailbox, 0, strlen($mailbox) - 1);
         $pos = strrpos ($mailbox, "\"")+1;
         $box = substr($mailbox, $pos);
      } else {
         $box = substr($mailbox, strrpos($mailbox, " ")+1, strlen($mailbox));
      }
      return $box;
*/      

      if (ereg(" *\"([^\r\n\"]*)\"[ \r\n]*$", $mailbox, $regs))
          return $regs[1];
      ereg(" *([^ \r\n\"]*)[ \r\n]*$",$mailbox,$regs);
      return $regs[1];

   }

   function replace_spaces ($string) {
      return str_replace(" ", "&nbsp;", $string);
   }

   function replace_escaped_spaces ($string) {
      return str_replace("&nbsp;", " ", $string);
   }

   function get_location () {
      # This determines the location to forward to relative
      # to your server.  If this doesnt work correctly for
      # you (although it should), you can remove all this 
      # code except the last two lines, and change the header()
      # function to look something like this, customized to
      # the location of SquirrelMail on your server:
      #
      #   http://www.myhost.com/squirrelmail/src/login.php
   
      global $PHP_SELF, $SERVER_NAME, $HTTPS, $HTTP_HOST, $SERVER_PORT;

      // Get the path
      $path = substr($PHP_SELF, 0, strrpos($PHP_SELF, '/'));
   
      // Check if this is a HTTPS or regular HTTP request
      $proto = "http://";
      if(isset($HTTPS) && !strcasecmp($HTTPS, 'on') ) {
        $proto = "https://";
      }
   
      // Get the hostname from the Host header or server config.
      $host = "";
      if (isset($HTTP_HOST) && !empty($HTTP_HOST))
      {
          $host = $HTTP_HOST;
      }
      else if (isset($SERVER_NAME) && !empty($SERVER_NAME))
      {
          $host = $SERVER_NAME;
      }
      
      $port = '';
      if (! strstr($host, ':'))
      {
          if (isset($SERVER_PORT)) {
              if (($SERVER_PORT != 80 && $proto == "http://")
                      || ($SERVER_PORT != 443 && $proto == "https://")) {
                  $port = sprintf(':%d', $SERVER_PORT);
              }
          }
      }
      
      if ($host)
          return $proto . $host . $port . $path;

      // Fallback is to omit the server name and use a relative URI,
      // although this is not RFC 2616 compliant.
      return $path;    
   }   

   function sqStripSlashes($string) {
      if (get_magic_quotes_gpc()) {
         $string = stripslashes($string);
      }
      return $string;
   }


   // These functions are used to encrypt the passowrd before it is
   // stored in a cookie.
   function OneTimePadEncrypt ($string, $epad) {
      $pad = base64_decode($epad);
      $encrypted = "";
      for ($i = 0; $i < strlen ($string); $i++) {
	 $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i]));
      }

      return base64_encode($encrypted);
   }

   function OneTimePadDecrypt ($string, $epad) {
      $pad = base64_decode($epad);
      $encrypted = base64_decode ($string);
      $decrypted = "";
      for ($i = 0; $i < strlen ($encrypted); $i++) {
	 $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i]));
      }

      return $decrypted;
   }


   // Randomize the mt_rand() function.  Toss this in strings or
   // integers and it will seed the generator appropriately.
   // With strings, it is better to get them long. Use md5() to
   // lengthen smaller strings.
   function sq_mt_seed($Val)
   {
       // if mt_getrandmax() does not return a 2^n - 1 number,
       // this might not work well.  This uses $Max as a bitmask.
       $Max = mt_getrandmax();
       
       if (! is_int($Val))
       {
           if (function_exists("crc32"))
           {
               $Val = crc32($Val);
           }
           else
           {
               $Str = $Val;
               $Pos = 0;
               $Val = 0;
               $Mask = $Max / 2;
               $HighBit = $Max ^ $Mask;
               while ($Pos < strlen($Str))
               {
                   if ($Val & $HighBit)
                   {
                       $Val = (($Val & $Mask) << 1) + 1;
                   }
                   else
                   {
                       $Val = ($Val & $Mask) << 1;
                   }
                   $Val ^= $Str[$Pos];
                   $Pos ++;
               }
           }
       }

       if ($Val < 0)
         $Val *= -1;
       if ($Val = 0)
         return;

       mt_srand(($Val ^ mt_rand(0, $Max)) & $Max);
   }
   
   
   // This function initializes the random number generator fairly well.
   // It also only initializes it once, so you don't accidentally get
   // the same 'random' numbers twice in one session.
   function sq_mt_randomize()
   {
      global $REMOTE_PORT, $REMOTE_ADDR, $UNIQUE_ID;
      static $randomized;
      
      if ($randomized)
         return;
      
      // Global   
      sq_mt_seed((int)((double) microtime() * 1000000));
      sq_mt_seed(md5($REMOTE_PORT . $REMOTE_ADDR . getmypid()));
      
      // getrusage
      if (function_exists("getrusage")) {
         $dat = getrusage();
	 $Str = "";
	 foreach ($dat as $k => $v)
	 {
	     $Str .= "$k = $v\n";
	 }
	 sq_mt_seed(md5($Str));
      }
      
      // Apache-specific
      sq_mt_seed(md5($UNIQUE_ID));
      
      $randomized = 1;
   }
   
   function OneTimePadCreate ($length=100) {
      sq_mt_randomize();

      $pad = "";
      for ($i = 0; $i < $length; $i++) {
	 $pad .= chr(mt_rand(0,255));
      }

      return base64_encode($pad);
   }

   // Check if we have a required PHP-version. Return TRUE if we do,
   // or FALSE if we don't.
   // To check for 4.0.1, use sqCheckPHPVersion(4,0,1)
   // To check for 4.0b3, use sqCheckPHPVersion(4,0,-3)
   // Does not handle betas like 4.0.1b1 or development versions
   function sqCheckPHPVersion($major, $minor, $release) {

      $ver = phpversion();
      eregi("^([0-9]+)\.([0-9]+)(.*)", $ver, $regs);

      // Parse the version string
      $vmajor  = strval($regs[1]);
      $vminor  = strval($regs[2]);
      $vrel    = $regs[3];
      if($vrel[0] == ".") 
	 $vrel = strval(substr($vrel, 1));
      if($vrel[0] == "b" || $vrel[0] == "B") 
	 $vrel = - strval(substr($vrel, 1));
      if($vrel[0] == "r" || $vrel[0] == "R") 
	 $vrel = - strval(substr($vrel, 2))/10;
      
      // Compare major version
      if($vmajor < $major) return false;
      if($vmajor > $major) return true;

      // Major is the same. Compare minor
      if($vminor < $minor) return false;
      if($vminor > $minor) return true;
      
      // Major and minor is the same as the required one.
      // Compare release
      if($vrel >= 0 && $release >= 0) {       // Neither are beta
	 if($vrel < $release) return false;
      } else if($vrel >= 0 && $release < 0){  // This is not beta, required is beta
	 return true;
      } else if($vrel < 0 && $release >= 0){  // This is beta, require not beta
	 return false;
      } else {                                // Both are beta
	 if($vrel > $release) return false;
      }
      
      return true;
   }
   
   /* Returns a string showing the size of the message/attachment */
   function show_readable_size($bytes)
   {
       $bytes /= 1024;
       $type = 'k';
       
       if ($bytes / 1024 > 1)
       {
           $bytes /= 1024;
           $type = 'm';
       }
       
       if ($bytes < 10)
       {
           $bytes *= 10;
           settype($bytes, "integer");
           $bytes /= 10;
       }
       else
           settype($bytes, "integer");
       
       return $bytes . '<small>&nbsp;' . $type . '</small>';
   }

   /* Generates a random string from the caracter set you pass in
    *
    * Flags:
    *   1 = add lowercase a-z to $chars
    *   2 = add uppercase A-Z to $chars
    *   4 = add numbers 0-9 to $chars
    */
  
   function GenerateRandomString($size, $chars, $flags = 0)
   {
      if ($flags & 0x1)
          $chars .= 'abcdefghijklmnopqrstuvwxyz';
      if ($flags & 0x2)
          $chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
      if ($flags & 0x4)
          $chars .= '0123456789';
          
      if ($size < 1 || strlen($chars) < 1)
          return "";
          
      sq_mt_randomize(); // Initialize the random number generator
    
      while (strlen($String) < $size) {
         $String .= $chars[mt_rand(0, strlen($chars))];
      }
      
      return $String;
   }

?>
Commit	Line	Data
59177427	1	<?php
2ef37ed4	2
2ef37ed4	3	/* $Id$ */
7ce342dc	4
d068c0ec	5	$strings_php = true;
d068c0ec	6
3302d0d4	7	//*************************************************************************
	8	// Count the number of occurances of $needle are in $haystack.
	9	//*************************************************************************
	10	function countCharInString($haystack, $needle) {
f9b3e5d9	11	$haystack = ereg_replace("[^$needle]","",$haystack);
f9b3e5d9	12	return strlen($haystack);
3302d0d4	13	}
	14
	15	//*************************************************************************
	16	// Read from the back of $haystack until $needle is found, or the begining
f9b3e5d9	17	// of the $haystack is reached. $needle is a single character
3302d0d4	18	//*************************************************************************
3302d0d4	19	function readShortMailboxName($haystack, $needle) {
f4a3fd08	20	if ($needle == "") return $haystack;
1d2ce1c3	21	if ($needle == ".") $needle = "\.";
	22	ereg("([^$needle]+)$needle?$", $haystack, $regs);
	23	return $regs[1];
3302d0d4	24	}
3302d0d4	25
5bdd7223	26	//*************************************************************************
	27	// Read from the back of $haystack until $needle is found, or the begining
	28	// of the $haystack is reached. $needle is a single character
	29	//*************************************************************************
	30	function readMailboxParent($haystack, $needle) {
	31	if ($needle == ".") $needle = "\.";
	32	ereg("^(.+)$needle([^$needle]+)$needle?$", $haystack, $regs);
	33	return $regs[1];
	34	}
	35
8beafbbc	36	// Searches for the next position in a string minus white space
	37	function next_pos_minus_white ($haystack, $pos) {
	38	while (substr($haystack, $pos, 1) == " " \|\|
	39	substr($haystack, $pos, 1) == "\t" \|\|
	40	substr($haystack, $pos, 1) == "\n" \|\|
	41	substr($haystack, $pos, 1) == "\r") {
	42	if ($pos >= strlen($haystack))
	43	return -1;
	44	$pos++;
	45	}
	46	return $pos;
	47	}
	48
8467bf00	49	// Wraps text at $wrap characters
a95681a7	50	// Has a problem with special HTML characters, so call this before
	51	// you do character translation.
	52	// Specifically, &#039 comes up as 5 characters instead of 1.
01aab860	53	// This should not add newlines to the end of lines.
9eea179c	54	function sqWordWrap(&$line, $wrap) {
bcad90fe	55	preg_match("/^([\s>])([^\s>].)?$/", $line, $regs);
45f6dd68	56	$beginning_spaces = $regs[1];
45f6dd68	57	$words = explode(" ", $regs[2]);
a95681a7	58
	59	$i = 0;
	60	$line = $beginning_spaces;
30f64711	61
bcad90fe	62	while ($i < count($words)) {
	63	// Force one word to be on a line (minimum)
	64	$line .= $words[$i];
	65	$line_len = strlen($beginning_spaces) + strlen($words[$i]) +
	66	strlen($words[$i + 1]) + 2;
	67	$i ++;
45f6dd68	68
bcad90fe	69	// Add more words (as long as they fit)
	70	while ($line_len < $wrap && $i < count($words)) {
	71	$line .= ' ' . $words[$i];
	72	$i++;
	73	$line_len += strlen($words[$i]) + 1;
	74	}
45f6dd68	75
bcad90fe	76	// Skip spaces if they are the first thing on a continued line
	77	while (!$words[$i] && $i < count($words)) {
	78	$i ++;
	79	}
8ceb637a	80
8ceb637a	81	// Go to the next line if we have more to process
bcad90fe	82	if ($i < count($words)) {
bcad90fe	83	$line .= "\n$beginning_spaces";
b8ea4ed6	84	}
e550d551	85	}
e550d551	86	}
01aab860	87
	88
	89	// Does the opposite of sqWordWrap()
	90	function sqUnWordWrap(&$body)
	91	{
	92	$lines = explode("\n", $body);
	93	$body = "";
	94	$PreviousSpaces = "";
	95	for ($i = 0; $i < count($lines); $i ++)
	96	{
	97	preg_match("/^([\s>])([^\s>].)?$/", $lines[$i], $regs);
	98	$CurrentSpaces = $regs[1];
	99	$CurrentRest = $regs[2];
	100	if ($i == 0)
	101	{
	102	$PreviousSpaces = $CurrentSpaces;
	103	$body = $lines[$i];
	104	}
	105	else if ($PreviousSpaces == $CurrentSpaces && // Do the beginnings match
	106	strlen($lines[$i - 1]) > 65 && // Over 65 characters long
	107	strlen($CurrentRest)) // and there's a line to continue with
	108	{
	109	$body .= ' ' . $CurrentRest;
	110	}
	111	else
	112	{
	113	$body .= "\n" . $lines[$i];
	114	$PreviousSpaces = $CurrentSpaces;
	115	}
	116	}
	117	$body .= "\n";
	118	}
	119
40ee9452	120
40ee9452	121	/ Returns an array of email addresses /
a7f3c40d	122	/* Be cautious of "user@host.com" */
40ee9452	123	function parseAddrs($text) {
1d2ce1c3	124	if (trim($text) == "")
c5edd369	125	return array();
1d2ce1c3	126	$text = str_replace(" ", "", $text);
	127	$text = ereg_replace('"[^"]*"', "", $text);
	128	$text = ereg_replace("\([^\)]*\)", "", $text);
	129	$text = str_replace(",", ";", $text);
	130	$array = explode(";", $text);
	131	for ($i = 0; $i < count ($array); $i++) {
	132	$array[$i] = eregi_replace ("^.*[<]", "", $array[$i]);
	133	$array[$i] = eregi_replace ("[>].*$", "", $array[$i]);
	134	}
	135	return $array;
40ee9452	136	}
	137
	138	/ Returns a line of comma separated email addresses from an array /
	139	function getLineOfAddrs($array) {
b676ba7e	140	if (is_array($array)) {
	141	$to_line = implode(", ", $array);
	142	$to_line = trim(ereg_replace(",,+", ",", $to_line));
	143	} else {
	144	$to_line = "";
40ee9452	145	}
	146	return $to_line;
	147	}
7ce342dc	148
9eea179c	149	function translateText(&$body, $wrap_at, $charset) {
9297917e	150	global $where, $what; // from searching
172fd718	151	global $url_parser_php;
9297917e	152
8442ac08	153	if (!isset($url_parser_php)) {
	154	include "../functions/url_parser.php";
	155	}
	156
a8648d75	157	$body_ary = explode("\n", $body);
8ceb637a	158	$PriorQuotes = 0;
8442ac08	159	for ($i=0; $i < count($body_ary); $i++) {
a8648d75	160	$line = $body_ary[$i];
a37f3771	161	if (strlen($line) - 2 >= $wrap_at) {
9eea179c	162	sqWordWrap($line, $wrap_at);
a37f3771	163	}
a95681a7	164	$line = charset_decode($charset, $line);
a95681a7	165	$line = str_replace("\t", ' ', $line);
a37f3771	166
9eea179c	167	parseUrl ($line);
e2ef6f4b	168
9eea179c	169	$Quotes = 0;
	170	$pos = 0;
	171	while (1)
	172	{
8ceb637a	173	if ($line[$pos] == ' ')
9eea179c	174	{
8ceb637a	175	$pos ++;
9eea179c	176	}
	177	else if (strpos($line, '>', $pos) === $pos)
	178	{
	179	$pos += 4;
	180	$Quotes ++;
	181	}
	182	else
	183	{
	184	break;
	185	}
	186	}
	187
8ceb637a	188	if ($Quotes > 1)
	189	$line = "<FONT COLOR=FF0000>$line</FONT>";
	190	elseif ($Quotes)
	191	$line = "<FONT COLOR=800000>$line</FONT>";
e2ef6f4b	192
8ceb637a	193	$body_ary[$i] = $line;
a8648d75	194	}
8ceb637a	195	$body = "<pre>" . implode("\n", $body_ary) . "</pre>";
78509c54	196	}
78509c54	197
7ce342dc	198	/* SquirrelMail version number -- DO NOT CHANGE */
5a1a8db3	199	$version = "1.0pre3 [cvs]";
d29aac0e	200
	201
	202	function find_mailbox_name ($mailbox) {
f9b3e5d9	203	/*
d29aac0e	204	$mailbox = trim($mailbox);
	205	if (substr($mailbox, strlen($mailbox)-1, strlen($mailbox)) == "\"") {
	206	$mailbox = substr($mailbox, 0, strlen($mailbox) - 1);
	207	$pos = strrpos ($mailbox, "\"")+1;
	208	$box = substr($mailbox, $pos);
	209	} else {
	210	$box = substr($mailbox, strrpos($mailbox, " ")+1, strlen($mailbox));
	211	}
	212	return $box;
f9b3e5d9	213	*/
	214
	215	if (ereg(" \"([^\r\n\"])\"[ \r\n]*$", $mailbox, $regs))
	216	return $regs[1];
	217	ereg(" ([^ \r\n\"])[ \r\n]*$",$mailbox,$regs);
	218	return $regs[1];
	219
d29aac0e	220	}
	221
	222	function replace_spaces ($string) {
	223	return str_replace(" ", " ", $string);
	224	}
	225
	226	function replace_escaped_spaces ($string) {
	227	return str_replace(" ", " ", $string);
	228	}
1195c340	229
	230	function get_location () {
	231	# This determines the location to forward to relative
7e343a7d	232	# to your server. If this doesnt work correctly for
1195c340	233	# you (although it should), you can remove all this
	234	# code except the last two lines, and change the header()
	235	# function to look something like this, customized to
	236	# the location of SquirrelMail on your server:
	237	#
	238	# http://www.myhost.com/squirrelmail/src/login.php
	239
00421cb6	240	global $PHP_SELF, $SERVER_NAME, $HTTPS, $HTTP_HOST, $SERVER_PORT;
1195c340	241
	242	// Get the path
	243	$path = substr($PHP_SELF, 0, strrpos($PHP_SELF, '/'));
	244
	245	// Check if this is a HTTPS or regular HTTP request
	246	$proto = "http://";
16f32d4a	247	if(isset($HTTPS) && !strcasecmp($HTTPS, 'on') ) {
1195c340	248	$proto = "https://";
	249	}
	250
	251	// Get the hostname from the Host header or server config.
b768a8eb	252	$host = "";
	253	if (isset($HTTP_HOST) && !empty($HTTP_HOST))
	254	{
	255	$host = $HTTP_HOST;
	256	}
	257	else if (isset($SERVER_NAME) && !empty($SERVER_NAME))
	258	{
	259	$host = $SERVER_NAME;
	260	}
	261
b768a8eb	262	$port = '';
	263	if (! strstr($host, ':'))
	264	{
	265	if (isset($SERVER_PORT)) {
d6f5495a	266	if (($SERVER_PORT != 80 && $proto == "http://")
d6f5495a	267	\|\| ($SERVER_PORT != 443 && $proto == "https://")) {
b768a8eb	268	$port = sprintf(':%d', $SERVER_PORT);
	269	}
	270	}
	271	}
	272
	273	if ($host)
	274	return $proto . $host . $port . $path;
	275
1195c340	276	// Fallback is to omit the server name and use a relative URI,
1195c340	277	// although this is not RFC 2616 compliant.
b768a8eb	278	return $path;
1195c340	279	}
7aaa81fc	280
	281	function sqStripSlashes($string) {
	282	if (get_magic_quotes_gpc()) {
	283	$string = stripslashes($string);
	284	}
	285	return $string;
	286	}
52eefafc	287
	288
	289	// These functions are used to encrypt the passowrd before it is
	290	// stored in a cookie.
59edd854	291	function OneTimePadEncrypt ($string, $epad) {
59edd854	292	$pad = base64_decode($epad);
245a6892	293	$encrypted = "";
52eefafc	294	for ($i = 0; $i < strlen ($string); $i++) {
	295	$encrypted .= chr (ord($string[$i]) ^ ord($pad[$i]));
	296	}
	297
	298	return base64_encode($encrypted);
	299	}
	300
59edd854	301	function OneTimePadDecrypt ($string, $epad) {
59edd854	302	$pad = base64_decode($epad);
52eefafc	303	$encrypted = base64_decode ($string);
245a6892	304	$decrypted = "";
52eefafc	305	for ($i = 0; $i < strlen ($encrypted); $i++) {
	306	$decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i]));
	307	}
	308
	309	return $decrypted;
	310	}
	311
580e1793	312
dcaf2a49	313	// Randomize the mt_rand() function. Toss this in strings or
	314	// integers and it will seed the generator appropriately.
	315	// With strings, it is better to get them long. Use md5() to
	316	// lengthen smaller strings.
	317	function sq_mt_seed($Val)
	318	{
	319	// if mt_getrandmax() does not return a 2^n - 1 number,
	320	// this might not work well. This uses $Max as a bitmask.
	321	$Max = mt_getrandmax();
	322
	323	if (! is_int($Val))
	324	{
	325	if (function_exists("crc32"))
	326	{
	327	$Val = crc32($Val);
	328	}
	329	else
	330	{
	331	$Str = $Val;
	332	$Pos = 0;
	333	$Val = 0;
	334	$Mask = $Max / 2;
	335	$HighBit = $Max ^ $Mask;
	336	while ($Pos < strlen($Str))
	337	{
	338	if ($Val & $HighBit)
	339	{
	340	$Val = (($Val & $Mask) << 1) + 1;
	341	}
	342	else
	343	{
	344	$Val = ($Val & $Mask) << 1;
	345	}
	346	$Val ^= $Str[$Pos];
	347	$Pos ++;
	348	}
	349	}
	350	}
580e1793	351
dcaf2a49	352	if ($Val < 0)
	353	$Val *= -1;
	354	if ($Val = 0)
	355	return;
	356
	357	mt_srand(($Val ^ mt_rand(0, $Max)) & $Max);
	358	}
	359
	360
	361	// This function initializes the random number generator fairly well.
	362	// It also only initializes it once, so you don't accidentally get
	363	// the same 'random' numbers twice in one session.
	364	function sq_mt_randomize()
	365	{
	366	global $REMOTE_PORT, $REMOTE_ADDR, $UNIQUE_ID;
	367	static $randomized;
	368
	369	if ($randomized)
	370	return;
	371
	372	// Global
	373	sq_mt_seed((int)((double) microtime() * 1000000));
	374	sq_mt_seed(md5($REMOTE_PORT . $REMOTE_ADDR . getmypid()));
	375
	376	// getrusage
	377	if (function_exists("getrusage")) {
	378	$dat = getrusage();
245a6892	379	$Str = "";
	380	foreach ($dat as $k => $v)
	381	{
	382	$Str .= "$k = $v\n";
	383	}
	384	sq_mt_seed(md5($Str));
dcaf2a49	385	}
	386
	387	// Apache-specific
	388	sq_mt_seed(md5($UNIQUE_ID));
	389
	390	$randomized = 1;
	391	}
	392
	393	function OneTimePadCreate ($length=100) {
	394	sq_mt_randomize();
245a6892	395
245a6892	396	$pad = "";
52eefafc	397	for ($i = 0; $i < $length; $i++) {
dcaf2a49	398	$pad .= chr(mt_rand(0,255));
52eefafc	399	}
52eefafc	400
59edd854	401	return base64_encode($pad);
52eefafc	402	}
52eefafc	403
f79af863	404	// Check if we have a required PHP-version. Return TRUE if we do,
	405	// or FALSE if we don't.
	406	// To check for 4.0.1, use sqCheckPHPVersion(4,0,1)
	407	// To check for 4.0b3, use sqCheckPHPVersion(4,0,-3)
	408	// Does not handle betas like 4.0.1b1 or development versions
	409	function sqCheckPHPVersion($major, $minor, $release) {
	410
	411	$ver = phpversion();
	412	eregi("^([0-9]+)\.([0-9]+)(.*)", $ver, $regs);
	413
	414	// Parse the version string
	415	$vmajor = strval($regs[1]);
	416	$vminor = strval($regs[2]);
	417	$vrel = $regs[3];
	418	if($vrel[0] == ".")
	419	$vrel = strval(substr($vrel, 1));
	420	if($vrel[0] == "b" \|\| $vrel[0] == "B")
	421	$vrel = - strval(substr($vrel, 1));
	422	if($vrel[0] == "r" \|\| $vrel[0] == "R")
	423	$vrel = - strval(substr($vrel, 2))/10;
	424
b5afdff0	425	// Compare major version
f79af863	426	if($vmajor < $major) return false;
b5afdff0	427	if($vmajor > $major) return true;
	428
	429	// Major is the same. Compare minor
f79af863	430	if($vminor < $minor) return false;
b5afdff0	431	if($vminor > $minor) return true;
f79af863	432
b5afdff0	433	// Major and minor is the same as the required one.
f79af863	434	// Compare release
	435	if($vrel >= 0 && $release >= 0) { // Neither are beta
	436	if($vrel < $release) return false;
	437	} else if($vrel >= 0 && $release < 0){ // This is not beta, required is beta
	438	return true;
	439	} else if($vrel < 0 && $release >= 0){ // This is beta, require not beta
	440	return false;
	441	} else { // Both are beta
	442	if($vrel > $release) return false;
	443	}
	444
	445	return true;
	446	}
6e7468f6	447
	448	/* Returns a string showing the size of the message/attachment */
	449	function show_readable_size($bytes)
	450	{
	451	$bytes /= 1024;
	452	$type = 'k';
	453
	454	if ($bytes / 1024 > 1)
	455	{
	456	$bytes /= 1024;
	457	$type = 'm';
	458	}
	459
	460	if ($bytes < 10)
	461	{
	462	$bytes *= 10;
	463	settype($bytes, "integer");
	464	$bytes /= 10;
	465	}
	466	else
	467	settype($bytes, "integer");
	468
	469	return $bytes . '<small> ' . $type . '</small>';
	470	}
f79af863	471
1899535f	472	/* Generates a random string from the caracter set you pass in
	473	*
	474	* Flags:
	475	* 1 = add lowercase a-z to $chars
	476	* 2 = add uppercase A-Z to $chars
	477	* 4 = add numbers 0-9 to $chars
	478	*/
	479
	480	function GenerateRandomString($size, $chars, $flags = 0)
	481	{
	482	if ($flags & 0x1)
	483	$chars .= 'abcdefghijklmnopqrstuvwxyz';
	484	if ($flags & 0x2)
	485	$chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
	486	if ($flags & 0x4)
	487	$chars .= '0123456789';
	488
	489	if ($size < 1 \|\| strlen($chars) < 1)
	490	return "";
	491
	492	sq_mt_randomize(); // Initialize the random number generator
	493
	494	while (strlen($String) < $size) {
	495	$String .= $chars[mt_rand(0, strlen($chars))];
	496	}
	497
	498	return $String;
	499	}
	500
3302d0d4	501	?>