[squirrelmail.git] / functions / strings.php

<?php

   $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 == ".") $needle = "\.";
      ereg("([^$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;
      $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 = "1.0pre1 (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) && $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, $pad) {
      for ($i = 0; $i < strlen ($string); $i++) {
	 $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i]));
      }

      return base64_encode($encrypted);
   }

   function OneTimePadDecrypt ($string, $pad) {
      $encrypted = base64_decode ($string);
      
      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")) {
         $dat = getrusage();
	 sq_mt_seed(md5($dat["ru_nswap"] . $dat["ru_majflt"] . 
	    $dat["ru_utime.tv_sec"] . $dat["ru_utime.tv_usec"]));
      }
      
      // Apache-specific
      sq_mt_seed(md5($UNIQUE_ID));
      
      $randomized = 1;
   }
   
   function OneTimePadCreate ($length=100) {
      sq_mt_randomize();
      
      for ($i = 0; $i < $length; $i++) {
	 $pad .= chr(mt_rand(0,255));
      }

      return $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
7ce342dc	2
d068c0ec	3	$strings_php = true;
d068c0ec	4
3302d0d4	5	//*************************************************************************
	6	// Count the number of occurances of $needle are in $haystack.
	7	//*************************************************************************
	8	function countCharInString($haystack, $needle) {
f9b3e5d9	9	$haystack = ereg_replace("[^$needle]","",$haystack);
f9b3e5d9	10	return strlen($haystack);
3302d0d4	11	}
	12
	13	//*************************************************************************
	14	// Read from the back of $haystack until $needle is found, or the begining
f9b3e5d9	15	// of the $haystack is reached. $needle is a single character
3302d0d4	16	//*************************************************************************
3302d0d4	17	function readShortMailboxName($haystack, $needle) {
1d2ce1c3	18	if ($needle == ".") $needle = "\.";
	19	ereg("([^$needle]+)$needle?$", $haystack, $regs);
	20	return $regs[1];
3302d0d4	21	}
3302d0d4	22
8beafbbc	23	// Searches for the next position in a string minus white space
	24	function next_pos_minus_white ($haystack, $pos) {
	25	while (substr($haystack, $pos, 1) == " " \|\|
	26	substr($haystack, $pos, 1) == "\t" \|\|
	27	substr($haystack, $pos, 1) == "\n" \|\|
	28	substr($haystack, $pos, 1) == "\r") {
	29	if ($pos >= strlen($haystack))
	30	return -1;
	31	$pos++;
	32	}
	33	return $pos;
	34	}
	35
8467bf00	36	// Wraps text at $wrap characters
a95681a7	37	// Has a problem with special HTML characters, so call this before
	38	// you do character translation.
	39	// Specifically, &#039 comes up as 5 characters instead of 1.
01aab860	40	// This should not add newlines to the end of lines.
9eea179c	41	function sqWordWrap(&$line, $wrap) {
bcad90fe	42	preg_match("/^([\s>])([^\s>].)?$/", $line, $regs);
45f6dd68	43	$beginning_spaces = $regs[1];
45f6dd68	44	$words = explode(" ", $regs[2]);
a95681a7	45
	46	$i = 0;
	47	$line = $beginning_spaces;
30f64711	48
bcad90fe	49	while ($i < count($words)) {
	50	// Force one word to be on a line (minimum)
	51	$line .= $words[$i];
	52	$line_len = strlen($beginning_spaces) + strlen($words[$i]) +
	53	strlen($words[$i + 1]) + 2;
	54	$i ++;
45f6dd68	55
bcad90fe	56	// Add more words (as long as they fit)
	57	while ($line_len < $wrap && $i < count($words)) {
	58	$line .= ' ' . $words[$i];
	59	$i++;
	60	$line_len += strlen($words[$i]) + 1;
	61	}
45f6dd68	62
bcad90fe	63	// Skip spaces if they are the first thing on a continued line
	64	while (!$words[$i] && $i < count($words)) {
	65	$i ++;
	66	}
8ceb637a	67
8ceb637a	68	// Go to the next line if we have more to process
bcad90fe	69	if ($i < count($words)) {
bcad90fe	70	$line .= "\n$beginning_spaces";
b8ea4ed6	71	}
e550d551	72	}
e550d551	73	}
01aab860	74
	75
	76	// Does the opposite of sqWordWrap()
	77	function sqUnWordWrap(&$body)
	78	{
	79	$lines = explode("\n", $body);
	80	$body = "";
	81	$PreviousSpaces = "";
	82	for ($i = 0; $i < count($lines); $i ++)
	83	{
	84	preg_match("/^([\s>])([^\s>].)?$/", $lines[$i], $regs);
	85	$CurrentSpaces = $regs[1];
	86	$CurrentRest = $regs[2];
	87	if ($i == 0)
	88	{
	89	$PreviousSpaces = $CurrentSpaces;
	90	$body = $lines[$i];
	91	}
	92	else if ($PreviousSpaces == $CurrentSpaces && // Do the beginnings match
	93	strlen($lines[$i - 1]) > 65 && // Over 65 characters long
	94	strlen($CurrentRest)) // and there's a line to continue with
	95	{
	96	$body .= ' ' . $CurrentRest;
	97	}
	98	else
	99	{
	100	$body .= "\n" . $lines[$i];
	101	$PreviousSpaces = $CurrentSpaces;
	102	}
	103	}
	104	$body .= "\n";
	105	}
	106
40ee9452	107
40ee9452	108	/ Returns an array of email addresses /
a7f3c40d	109	/* Be cautious of "user@host.com" */
40ee9452	110	function parseAddrs($text) {
1d2ce1c3	111	if (trim($text) == "")
7831268e	112	return;
1d2ce1c3	113	$text = str_replace(" ", "", $text);
	114	$text = ereg_replace('"[^"]*"', "", $text);
	115	$text = ereg_replace("\([^\)]*\)", "", $text);
	116	$text = str_replace(",", ";", $text);
	117	$array = explode(";", $text);
	118	for ($i = 0; $i < count ($array); $i++) {
	119	$array[$i] = eregi_replace ("^.*[<]", "", $array[$i]);
	120	$array[$i] = eregi_replace ("[>].*$", "", $array[$i]);
	121	}
	122	return $array;
40ee9452	123	}
	124
	125	/ Returns a line of comma separated email addresses from an array /
	126	function getLineOfAddrs($array) {
b676ba7e	127	if (is_array($array)) {
	128	$to_line = implode(", ", $array);
	129	$to_line = trim(ereg_replace(",,+", ",", $to_line));
	130	} else {
	131	$to_line = "";
40ee9452	132	}
	133	return $to_line;
	134	}
7ce342dc	135
9eea179c	136	function translateText(&$body, $wrap_at, $charset) {
9297917e	137	global $where, $what; // from searching
172fd718	138	global $url_parser_php;
9297917e	139
8442ac08	140	if (!isset($url_parser_php)) {
	141	include "../functions/url_parser.php";
	142	}
	143
a8648d75	144	$body_ary = explode("\n", $body);
8ceb637a	145	$PriorQuotes = 0;
8442ac08	146	for ($i=0; $i < count($body_ary); $i++) {
a8648d75	147	$line = $body_ary[$i];
a37f3771	148	if (strlen($line) - 2 >= $wrap_at) {
9eea179c	149	sqWordWrap($line, $wrap_at);
a37f3771	150	}
a95681a7	151	$line = charset_decode($charset, $line);
a95681a7	152	$line = str_replace("\t", ' ', $line);
a37f3771	153
9eea179c	154	parseUrl ($line);
e2ef6f4b	155
9eea179c	156	$Quotes = 0;
	157	$pos = 0;
	158	while (1)
	159	{
8ceb637a	160	if ($line[$pos] == ' ')
9eea179c	161	{
8ceb637a	162	$pos ++;
9eea179c	163	}
	164	else if (strpos($line, '>', $pos) === $pos)
	165	{
	166	$pos += 4;
	167	$Quotes ++;
	168	}
	169	else
	170	{
	171	break;
	172	}
	173	}
	174
8ceb637a	175	if ($Quotes > 1)
	176	$line = "<FONT COLOR=FF0000>$line</FONT>";
	177	elseif ($Quotes)
	178	$line = "<FONT COLOR=800000>$line</FONT>";
e2ef6f4b	179
8ceb637a	180	$body_ary[$i] = $line;
a8648d75	181	}
8ceb637a	182	$body = "<pre>" . implode("\n", $body_ary) . "</pre>";
78509c54	183	}
78509c54	184
7ce342dc	185	/* SquirrelMail version number -- DO NOT CHANGE */
fd0a282a	186	$version = "1.0pre1 (cvs)";
d29aac0e	187
	188
	189	function find_mailbox_name ($mailbox) {
f9b3e5d9	190	/*
d29aac0e	191	$mailbox = trim($mailbox);
	192	if (substr($mailbox, strlen($mailbox)-1, strlen($mailbox)) == "\"") {
	193	$mailbox = substr($mailbox, 0, strlen($mailbox) - 1);
	194	$pos = strrpos ($mailbox, "\"")+1;
	195	$box = substr($mailbox, $pos);
	196	} else {
	197	$box = substr($mailbox, strrpos($mailbox, " ")+1, strlen($mailbox));
	198	}
	199	return $box;
f9b3e5d9	200	*/
	201
	202	if (ereg(" \"([^\r\n\"])\"[ \r\n]*$", $mailbox, $regs))
	203	return $regs[1];
	204	ereg(" ([^ \r\n\"])[ \r\n]*$",$mailbox,$regs);
	205	return $regs[1];
	206
d29aac0e	207	}
	208
	209	function replace_spaces ($string) {
	210	return str_replace(" ", " ", $string);
	211	}
	212
	213	function replace_escaped_spaces ($string) {
	214	return str_replace(" ", " ", $string);
	215	}
1195c340	216
	217	function get_location () {
	218	# This determines the location to forward to relative
7e343a7d	219	# to your server. If this doesnt work correctly for
1195c340	220	# you (although it should), you can remove all this
	221	# code except the last two lines, and change the header()
	222	# function to look something like this, customized to
	223	# the location of SquirrelMail on your server:
	224	#
	225	# http://www.myhost.com/squirrelmail/src/login.php
	226
00421cb6	227	global $PHP_SELF, $SERVER_NAME, $HTTPS, $HTTP_HOST, $SERVER_PORT;
1195c340	228
	229	// Get the path
	230	$path = substr($PHP_SELF, 0, strrpos($PHP_SELF, '/'));
	231
	232	// Check if this is a HTTPS or regular HTTP request
	233	$proto = "http://";
	234	if(isset($HTTPS) && $HTTPS == 'on' ) {
	235	$proto = "https://";
	236	}
	237
	238	// Get the hostname from the Host header or server config.
b768a8eb	239	$host = "";
	240	if (isset($HTTP_HOST) && !empty($HTTP_HOST))
	241	{
	242	$host = $HTTP_HOST;
	243	}
	244	else if (isset($SERVER_NAME) && !empty($SERVER_NAME))
	245	{
	246	$host = $SERVER_NAME;
	247	}
	248
b768a8eb	249	$port = '';
	250	if (! strstr($host, ':'))
	251	{
	252	if (isset($SERVER_PORT)) {
d6f5495a	253	if (($SERVER_PORT != 80 && $proto == "http://")
d6f5495a	254	\|\| ($SERVER_PORT != 443 && $proto == "https://")) {
b768a8eb	255	$port = sprintf(':%d', $SERVER_PORT);
	256	}
	257	}
	258	}
	259
	260	if ($host)
	261	return $proto . $host . $port . $path;
	262
1195c340	263	// Fallback is to omit the server name and use a relative URI,
1195c340	264	// although this is not RFC 2616 compliant.
b768a8eb	265	return $path;
1195c340	266	}
7aaa81fc	267
	268	function sqStripSlashes($string) {
	269	if (get_magic_quotes_gpc()) {
	270	$string = stripslashes($string);
	271	}
	272	return $string;
	273	}
52eefafc	274
	275
	276	// These functions are used to encrypt the passowrd before it is
	277	// stored in a cookie.
	278	function OneTimePadEncrypt ($string, $pad) {
	279	for ($i = 0; $i < strlen ($string); $i++) {
	280	$encrypted .= chr (ord($string[$i]) ^ ord($pad[$i]));
	281	}
	282
	283	return base64_encode($encrypted);
	284	}
	285
	286	function OneTimePadDecrypt ($string, $pad) {
	287	$encrypted = base64_decode ($string);
	288
	289	for ($i = 0; $i < strlen ($encrypted); $i++) {
	290	$decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i]));
	291	}
	292
	293	return $decrypted;
	294	}
	295
580e1793	296
dcaf2a49	297	// Randomize the mt_rand() function. Toss this in strings or
	298	// integers and it will seed the generator appropriately.
	299	// With strings, it is better to get them long. Use md5() to
	300	// lengthen smaller strings.
	301	function sq_mt_seed($Val)
	302	{
	303	// if mt_getrandmax() does not return a 2^n - 1 number,
	304	// this might not work well. This uses $Max as a bitmask.
	305	$Max = mt_getrandmax();
	306
	307	if (! is_int($Val))
	308	{
	309	if (function_exists("crc32"))
	310	{
	311	$Val = crc32($Val);
	312	}
	313	else
	314	{
	315	$Str = $Val;
	316	$Pos = 0;
	317	$Val = 0;
	318	$Mask = $Max / 2;
	319	$HighBit = $Max ^ $Mask;
	320	while ($Pos < strlen($Str))
	321	{
	322	if ($Val & $HighBit)
	323	{
	324	$Val = (($Val & $Mask) << 1) + 1;
	325	}
	326	else
	327	{
	328	$Val = ($Val & $Mask) << 1;
	329	}
	330	$Val ^= $Str[$Pos];
	331	$Pos ++;
	332	}
	333	}
	334	}
580e1793	335
dcaf2a49	336	if ($Val < 0)
	337	$Val *= -1;
	338	if ($Val = 0)
	339	return;
	340
	341	mt_srand(($Val ^ mt_rand(0, $Max)) & $Max);
	342	}
	343
	344
	345	// This function initializes the random number generator fairly well.
	346	// It also only initializes it once, so you don't accidentally get
	347	// the same 'random' numbers twice in one session.
	348	function sq_mt_randomize()
	349	{
	350	global $REMOTE_PORT, $REMOTE_ADDR, $UNIQUE_ID;
	351	static $randomized;
	352
	353	if ($randomized)
	354	return;
	355
	356	// Global
	357	sq_mt_seed((int)((double) microtime() * 1000000));
	358	sq_mt_seed(md5($REMOTE_PORT . $REMOTE_ADDR . getmypid()));
	359
	360	// getrusage
	361	if (function_exists("getrusage")) {
	362	$dat = getrusage();
	363	sq_mt_seed(md5($dat["ru_nswap"] . $dat["ru_majflt"] .
	364	$dat["ru_utime.tv_sec"] . $dat["ru_utime.tv_usec"]));
	365	}
	366
	367	// Apache-specific
	368	sq_mt_seed(md5($UNIQUE_ID));
	369
	370	$randomized = 1;
	371	}
	372
	373	function OneTimePadCreate ($length=100) {
	374	sq_mt_randomize();
52eefafc	375
52eefafc	376	for ($i = 0; $i < $length; $i++) {
dcaf2a49	377	$pad .= chr(mt_rand(0,255));
52eefafc	378	}
	379
	380	return $pad;
	381	}
	382
f79af863	383	// Check if we have a required PHP-version. Return TRUE if we do,
	384	// or FALSE if we don't.
	385	// To check for 4.0.1, use sqCheckPHPVersion(4,0,1)
	386	// To check for 4.0b3, use sqCheckPHPVersion(4,0,-3)
	387	// Does not handle betas like 4.0.1b1 or development versions
	388	function sqCheckPHPVersion($major, $minor, $release) {
	389
	390	$ver = phpversion();
	391	eregi("^([0-9]+)\.([0-9]+)(.*)", $ver, $regs);
	392
	393	// Parse the version string
	394	$vmajor = strval($regs[1]);
	395	$vminor = strval($regs[2]);
	396	$vrel = $regs[3];
	397	if($vrel[0] == ".")
	398	$vrel = strval(substr($vrel, 1));
	399	if($vrel[0] == "b" \|\| $vrel[0] == "B")
	400	$vrel = - strval(substr($vrel, 1));
	401	if($vrel[0] == "r" \|\| $vrel[0] == "R")
	402	$vrel = - strval(substr($vrel, 2))/10;
	403
b5afdff0	404	// Compare major version
f79af863	405	if($vmajor < $major) return false;
b5afdff0	406	if($vmajor > $major) return true;
	407
	408	// Major is the same. Compare minor
f79af863	409	if($vminor < $minor) return false;
b5afdff0	410	if($vminor > $minor) return true;
f79af863	411
b5afdff0	412	// Major and minor is the same as the required one.
f79af863	413	// Compare release
	414	if($vrel >= 0 && $release >= 0) { // Neither are beta
	415	if($vrel < $release) return false;
	416	} else if($vrel >= 0 && $release < 0){ // This is not beta, required is beta
	417	return true;
	418	} else if($vrel < 0 && $release >= 0){ // This is beta, require not beta
	419	return false;
	420	} else { // Both are beta
	421	if($vrel > $release) return false;
	422	}
	423
	424	return true;
	425	}
6e7468f6	426
	427	/* Returns a string showing the size of the message/attachment */
	428	function show_readable_size($bytes)
	429	{
	430	$bytes /= 1024;
	431	$type = 'k';
	432
	433	if ($bytes / 1024 > 1)
	434	{
	435	$bytes /= 1024;
	436	$type = 'm';
	437	}
	438
	439	if ($bytes < 10)
	440	{
	441	$bytes *= 10;
	442	settype($bytes, "integer");
	443	$bytes /= 10;
	444	}
	445	else
	446	settype($bytes, "integer");
	447
	448	return $bytes . '<small> ' . $type . '</small>';
	449	}
f79af863	450
1899535f	451	/* Generates a random string from the caracter set you pass in
	452	*
	453	* Flags:
	454	* 1 = add lowercase a-z to $chars
	455	* 2 = add uppercase A-Z to $chars
	456	* 4 = add numbers 0-9 to $chars
	457	*/
	458
	459	function GenerateRandomString($size, $chars, $flags = 0)
	460	{
	461	if ($flags & 0x1)
	462	$chars .= 'abcdefghijklmnopqrstuvwxyz';
	463	if ($flags & 0x2)
	464	$chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
	465	if ($flags & 0x4)
	466	$chars .= '0123456789';
	467
	468	if ($size < 1 \|\| strlen($chars) < 1)
	469	return "";
	470
	471	sq_mt_randomize(); // Initialize the random number generator
	472
	473	while (strlen($String) < $size) {
	474	$String .= $chars[mt_rand(0, strlen($chars))];
	475	}
	476
	477	return $String;
	478	}
	479
3302d0d4	480	?>