<?php
- $strings_php = true;
-
- //*************************************************************************
- // Count the number of occurances of $needle are in $haystack.
- //*************************************************************************
- function countCharInString($haystack, $needle) {
- $len = strlen($haystack);
- for ($i = 0; $i < $len; $i++) {
- if ($haystack[$i] == $needle)
- $count++;
- }
- return $count;
- }
+/**
+ * strings.php
+ *
+ * This code provides various string manipulation functions that are
+ * used by the rest of the SquirrelMail code.
+ *
+ * @copyright © 1999-2006 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
+ * @version $Id$
+ * @package squirrelmail
+ */
- //*************************************************************************
- // Read from the back of $haystack until $needle is found, or the begining
- // of the $haystack is reached.
- //*************************************************************************
- function readShortMailboxName($haystack, $needle) {
- if (substr($haystack, -1) == $needle)
- $haystack = substr($haystack, 0, strlen($haystack) - 1);
-
- if (strrpos($haystack, $needle)) {
- $pos = strrpos($haystack, $needle) + 1;
- $data = substr($haystack, $pos, strlen($haystack));
- } else {
- $data = $haystack;
- }
- return $data;
- }
+/**
+ * Appends citation markers to the string.
+ * Also appends a trailing space.
+ *
+ * @author Justus Pendleton
+ * @param string $str The string to append to
+ * @param int $citeLevel the number of markers to append
+ * @return null
+ * @since 1.5.1
+ */
+function sqMakeCite (&$str, $citeLevel) {
+ for ($i = 0; $i < $citeLevel; $i++) {
+ $str .= '>';
+ }
+ if ($citeLevel != 0) {
+ $str .= ' ';
+ }
+}
- // Searches for the next position in a string minus white space
- function next_pos_minus_white ($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;
- }
+/**
+ * Create a newline in the string, adding citation
+ * markers to the newline as necessary.
+ *
+ * @author Justus Pendleton
+ * @param string $str the string to make a newline in
+ * @param int $citeLevel the citation level the newline is at
+ * @param int $column starting column of the newline
+ * @return null
+ * @since 1.5.1
+ */
+function sqMakeNewLine (&$str, $citeLevel, &$column) {
+ $str .= "\n";
+ $column = 0;
+ if ($citeLevel > 0) {
+ sqMakeCite ($str, $citeLevel);
+ $column = $citeLevel + 1;
+ } else {
+ $column = 0;
+ }
+}
- // Wraps text at $wrap characters
- // Has a problem with special HTML characters, so call this before
- // you do character translation.
- // Specifically, ' comes up as 5 characters instead of 1.
- // This should not add newlines to the end of lines.
- function sqWordWrap(&$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)) {
- $i ++;
- }
-
- if ($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";
- }
-
+/**
+ * Checks for spaces in strings - only used if PHP doesn't have native ctype support
+ *
+ * You might be able to rewrite the function by adding short evaluation form.
+ *
+ * possible problems:
+ * - iso-2022-xx charsets - hex 20 might be part of other symbol. I might
+ * be wrong. 0x20 is not used in iso-2022-jp. I haven't checked iso-2022-kr
+ * and iso-2022-cn mappings.
+ *
+ * - no-break space ( ) - it is 8bit symbol, that depends on charset.
+ * there are at least three different charset groups that have nbsp in
+ * different places.
+ *
+ * I don't see any charset/nbsp options in php ctype either.
+ *
+ * @param string $string tested string
+ * @return bool true when only whitespace symbols are present in test string
+ * @since 1.5.1
+ */
+function sm_ctype_space($string) {
+ if ( preg_match('/^[\x09-\x0D]|^\x20/', $string) || $string=='') {
+ return true;
+ } else {
+ return false;
+ }
+}
- /** Returns an array of email addresses **/
- function parseAddrs($text) {
- if (trim($text) == "") {
- return;
- }
- $text = str_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;
- }
+/**
+ * Wraps text at $wrap characters. While sqWordWrap takes
+ * a single line of text and wraps it, this function works
+ * on the entire corpus at once, this allows it to be a little
+ * bit smarter and when and how to wrap.
+ *
+ * @author Justus Pendleton
+ * @param string $body the entire body of text
+ * @param int $wrap the maximum line length
+ * @return string the wrapped text
+ * @since 1.5.1
+ */
+function &sqBodyWrap (&$body, $wrap) {
+ //check for ctype support, and fake it if it doesn't exist
+ if (!function_exists('ctype_space')) {
+ function ctype_space ($string) {
+ return sm_ctype_space($string);
+ }
+ }
- /** Returns a line of comma separated email addresses from an array **/
- function getLineOfAddrs($array) {
- if (is_array($array)) {
- $to_line = implode(", ", $array);
- $to_line = trim(ereg_replace(",,+", ",", $to_line));
- } else {
- $to_line = "";
- }
- return $to_line;
- }
+ // the newly wrapped text
+ $outString = '';
+ // current column since the last newline in the outstring
+ $outStringCol = 0;
+ $length = sq_strlen($body);
+ // where we are in the original string
+ $pos = 0;
+ // the number of >>> citation markers we are currently at
+ $citeLevel = 0;
- function translateText(&$body, $wrap_at, $charset) {
- global $where, $what; // from searching
+ // the main loop, whenever we start a newline of input text
+ // we start from here
+ while ($pos < $length) {
+ // we're at the beginning of a line, get the new cite level
+ $newCiteLevel = 0;
- if (!isset($url_parser_php)) {
- include "../functions/url_parser.php";
- }
-
- $body_ary = explode("\n", $body);
- for ($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);
-
- $line = str_replace(' ', ' ', $line);
- $line = nl2br($line);
-
- parseUrl ($line);
-
- $Quotes = 0;
- $pos = 0;
- while (1)
- {
- if (strpos($line, ' ', $pos) === $pos)
- {
- $pos += 6;
- }
- else if (strpos($line, '>', $pos) === $pos)
- {
- $pos += 4;
- $Quotes ++;
- }
- else
- {
- break;
- }
- }
-
- if ($Quotes > 1) {
- $line = "<FONT COLOR=FF0000>$line</FONT>\n";
- } else if ($Quotes) {
- $line = "<FONT COLOR=800000>$line</FONT>\n";
- }
-
- if ($line)
- {
- $line = '<tt>' . $line . '</tt>';
- }
-
- $body_ary[$i] = $line . '<br>';
- }
- $body = implode("\n", $body_ary);
- }
+ while (($pos < $length) && (sq_substr($body,$pos,1) == '>')) {
+ $newCiteLevel++;
+ $pos++;
- /* SquirrelMail version number -- DO NOT CHANGE */
- $version = "0.6pre1 (cvs)";
+ // skip over any spaces interleaved among the cite markers
+ while (($pos < $length) && (sq_substr($body,$pos,1) == ' ')) {
+ $pos++;
- function find_mailbox_name ($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 $box;
- }
+ }
+ if ($pos >= $length) {
+ break;
+ }
+ }
- function replace_spaces ($string) {
- return str_replace(" ", " ", $string);
- }
+ // special case: if this is a blank line then maintain it
+ // (i.e. try to preserve original paragraph breaks)
+ // unless they occur at the very beginning of the text
+ if ((sq_substr($body,$pos,1) == "\n" ) && (sq_strlen($outString) != 0)) {
+ $outStringLast = $outString{sq_strlen($outString) - 1};
+ if ($outStringLast != "\n") {
+ $outString .= "\n";
+ }
+ sqMakeCite ($outString, $newCiteLevel);
+ $outString .= "\n";
+ $pos++;
+ $outStringCol = 0;
+ continue;
+ }
- function replace_escaped_spaces ($string) {
- return str_replace(" ", " ", $string);
- }
+ // if the cite level has changed, then start a new line
+ // with the new cite level.
+ if (($citeLevel != $newCiteLevel) && ($pos > ($newCiteLevel + 1)) && ($outStringCol != 0)) {
+ sqMakeNewLine ($outString, 0, $outStringCol);
+ }
- 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;
- }
-
- // Workaround to possibly get rid of extra port definitions.
- $port = '';
- if (! strstr($host, ':'))
- {
- if (isset($SERVER_PORT)) {
- if ($SERVER_PORT != 80) {
- $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;
- }
+ $citeLevel = $newCiteLevel;
+ // prepend the quote level if necessary
+ if ($outStringCol == 0) {
+ sqMakeCite ($outString, $citeLevel);
+ // if we added a citation then move the column
+ // out by citelevel + 1 (the cite markers + the space)
+ $outStringCol = $citeLevel + ($citeLevel ? 1 : 0);
+ } else if ($outStringCol > $citeLevel) {
+ // not a cite and we're not at the beginning of a line
+ // in the output. add a space to separate the new text
+ // from previous text.
+ $outString .= ' ';
+ $outStringCol++;
+ }
- // These functions are used to encrypt the passowrd before it is
- // stored in a cookie.
- function OneTimePadEncrypt ($string, $pad) {
- for ($i = 0; $i < strlen ($string); $i++) {
- $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i]));
- }
+ // find the next newline -- we don't want to go further than that
+ $nextNewline = sq_strpos ($body, "\n", $pos);
+ if ($nextNewline === FALSE) {
+ $nextNewline = $length;
+ }
- return base64_encode($encrypted);
- }
+ // Don't wrap unquoted lines at all. For now the textarea
+ // will work fine for this. Maybe revisit this later though
+ // (for completeness more than anything else, I think)
+ if ($citeLevel == 0) {
+ $outString .= sq_substr ($body, $pos, ($nextNewline - $pos));
+ $outStringCol = $nextNewline - $pos;
+ if ($nextNewline != $length) {
+ sqMakeNewLine ($outString, 0, $outStringCol);
+ }
+ $pos = $nextNewline + 1;
+ continue;
+ }
+ /**
+ * Set this to false to stop appending short strings to previous lines
+ */
+ $smartwrap = true;
+ // inner loop, (obviously) handles wrapping up to
+ // the next newline
+ while ($pos < $nextNewline) {
+ // skip over initial spaces
+ while (($pos < $nextNewline) && (ctype_space (sq_substr($body,$pos,1)))) {
+ $pos++;
+ }
+ // if this is a short line then just append it and continue outer loop
+ if (($outStringCol + $nextNewline - $pos) <= ($wrap - $citeLevel - 1) ) {
+ // if this is the final line in the input string then include
+ // any trailing newlines
+ // echo substr($body,$pos,$wrap). "<br />";
+ if (($nextNewline + 1 == $length) && (sq_substr($body,$nextNewline,1) == "\n")) {
+ $nextNewline++;
+ }
- function OneTimePadDecrypt ($string, $pad) {
- $encrypted = base64_decode ($string);
-
- for ($i = 0; $i < strlen ($encrypted); $i++) {
- $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i]));
- }
+ // trim trailing spaces
+ $lastRealChar = $nextNewline;
+ while (($lastRealChar > $pos && $lastRealChar < $length) && (ctype_space (sq_substr($body,$lastRealChar,1)))) {
+ $lastRealChar--;
+ }
+ // decide if appending the short string is what we want
+ if (($nextNewline < $length && sq_substr($body,$nextNewline,1) == "\n") &&
+ isset($lastRealChar)) {
+ $mypos = $pos;
+ //check the first word:
+ while (($mypos < $length) && (sq_substr($body,$mypos,1) == '>')) {
+ $mypos++;
+ // skip over any spaces interleaved among the cite markers
+ while (($mypos < $length) && (sq_substr($body,$mypos,1) == ' ')) {
+ $mypos++;
+ }
+ }
+/*
+ $ldnspacecnt = 0;
+ if ($mypos == $nextNewline+1) {
+ while (($mypos < $length) && ($body{$mypos} == ' ')) {
+ $ldnspacecnt++;
+ }
+ }
+*/
- return $decrypted;
- }
+ $firstword = sq_substr($body,$mypos,sq_strpos($body,' ',$mypos) - $mypos);
+ //if ($dowrap || $ldnspacecnt > 1 || ($firstword && (
+ if (!$smartwrap || $firstword && (
+ $firstword{0} == '-' ||
+ $firstword{0} == '+' ||
+ $firstword{0} == '*' ||
+ sq_substr($firstword,0,1) == sq_strtoupper(sq_substr($firstword,0,1)) ||
+ strpos($firstword,':'))) {
+ $outString .= sq_substr($body,$pos,($lastRealChar - $pos+1));
+ $outStringCol += ($lastRealChar - $pos);
+ sqMakeNewLine($outString,$citeLevel,$outStringCol);
+ $nextNewline++;
+ $pos = $nextNewline;
+ $outStringCol--;
+ continue;
+ }
+
+ }
+ $outString .= sq_substr ($body, $pos, ($lastRealChar - $pos + 1));
+ $outStringCol += ($lastRealChar - $pos);
+ $pos = $nextNewline + 1;
+ continue;
+ }
- // Randomize the mt_rand() function. Toss this in strings or
- // integers and it will seed the generator appropriately.
- // With strings, it is better to get them long. Use md5() to
- // lengthen smaller strings.
- function sq_mt_seed($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);
+ $eol = $pos + $wrap - $citeLevel - $outStringCol;
+ // eol is the tentative end of line.
+ // look backwards for there for a whitespace to break at.
+ // if it's already less than our current position then
+ // our current line is already too long, break immediately
+ // and restart outer loop
+ if ($eol <= $pos) {
+ sqMakeNewLine ($outString, $citeLevel, $outStringCol);
+ continue;
}
- 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 ++;
+
+ // start looking backwards for whitespace to break at.
+ $breakPoint = $eol;
+ while (($breakPoint > $pos) && (! ctype_space (sq_substr($body,$breakPoint,1)))) {
+ $breakPoint--;
+ }
+
+ // if we didn't find a breakpoint by looking backward then we
+ // need to figure out what to do about that
+ if ($breakPoint == $pos) {
+ // if we are not at the beginning then end this line
+ // and start a new loop
+ if ($outStringCol > ($citeLevel + 1)) {
+ sqMakeNewLine ($outString, $citeLevel, $outStringCol);
+ continue;
+ } else {
+ // just hard break here. most likely we are breaking
+ // a really long URL. could also try searching
+ // forward for a break point, which is what Mozilla
+ // does. don't bother for now.
+ $breakPoint = $eol;
}
}
+
+ // special case: maybe we should have wrapped last
+ // time. if the first breakpoint here makes the
+ // current line too long and there is already text on
+ // the current line, break and loop again if at
+ // beginning of current line, don't force break
+ $SLOP = 6;
+ if ((($outStringCol + ($breakPoint - $pos)) > ($wrap + $SLOP)) && ($outStringCol > ($citeLevel + 1))) {
+ sqMakeNewLine ($outString, $citeLevel, $outStringCol);
+ continue;
+ }
+
+ // skip newlines or whitespace at the beginning of the string
+ $substring = sq_substr ($body, $pos, ($breakPoint - $pos));
+ $substring = rtrim ($substring); // do rtrim and ctype_space have the same ideas about whitespace?
+ $outString .= $substring;
+ $outStringCol += sq_strlen ($substring);
+ // advance past the whitespace which caused the wrap
+ $pos = $breakPoint;
+ while (($pos < $length) && (ctype_space (sq_substr($body,$pos,1)))) {
+ $pos++;
+ }
+ if ($pos < $length) {
+ sqMakeNewLine ($outString, $citeLevel, $outStringCol);
+ }
}
+ }
- if ($Val < 0)
- $Val *= -1;
- if ($Val = 0)
- return;
+ return $outString;
+}
- mt_srand(($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));
- }
+/**
+ * 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.
+ *
+ * @param string $line the line of text to wrap, by ref
+ * @param int $wrap the maximum line lenth
+ * @param string $charset name of charset used in $line string. Available since v.1.5.1.
+ * @return void
+ * @since 1.0
+ */
+function sqWordWrap(&$line, $wrap, $charset='') {
+ global $languages, $squirrelmail_language;
- return $pad;
- }
+ // Use custom wrapping function, if translation provides it
+ if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_wordwrap')) {
+ if (mb_detect_encoding($line) != 'ASCII') {
+ $line = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_wordwrap', $line, $wrap);
+ return;
+ }
+ }
- // Check if we have a required PHP-version. Return TRUE if we do,
- // or FALSE if we don't.
- // To check for 4.0.1, use sqCheckPHPVersion(4,0,1)
- // To check for 4.0b3, use sqCheckPHPVersion(4,0,-3)
- // Does not handle betas like 4.0.1b1 or development versions
- function sqCheckPHPVersion($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> ' . $type . '</small>';
- }
+ ereg("^([\t >]*)([^\t >].*)?$", $line, $regs);
+ $beginning_spaces = $regs[1];
+ if (isset($regs[2])) {
+ $words = explode(' ', $regs[2]);
+ } else {
+ $words = '';
+ }
+
+ $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) + sq_strlen($words[$i],$charset) + 2;
+ if (isset($words[$i + 1]))
+ $line_len += sq_strlen($words[$i + 1],$charset);
+ $i ++;
+
+ /* Add more words (as long as they fit) */
+ while ($line_len < $wrap && $i < count($words)) {
+ $line .= ' ' . $words[$i];
+ $i++;
+ if (isset($words[$i]))
+ $line_len += sq_strlen($words[$i],$charset) + 1;
+ else
+ $line_len += 1;
+ }
+
+ /* Skip spaces if they are the first thing on a continued line */
+ while (!isset($words[$i]) && $i < count($words)) {
+ $i ++;
+ }
+
+ /* Go to the next line if we have more to process */
+ if ($i < count($words)) {
+ $line .= "\n";
+ }
+ }
+}
+
+/**
+ * Does the opposite of sqWordWrap()
+ * @param string $body the text to un-wordwrap
+ * @return void
+ * @since 1.0
+ */
+function sqUnWordWrap(&$body) {
+ global $squirrelmail_language;
+
+ if ($squirrelmail_language == 'ja_JP') {
+ return;
+ }
+
+ $lines = explode("\n", $body);
+ $body = '';
+ $PreviousSpaces = '';
+ $cnt = count($lines);
+ for ($i = 0; $i < $cnt; $i ++) {
+ preg_match("/^([\t >]*)([^\t >].*)?$/", $lines[$i], $regs);
+ $CurrentSpaces = $regs[1];
+ if (isset($regs[2])) {
+ $CurrentRest = $regs[2];
+ } else {
+ $CurrentRest = '';
+ }
+
+ if ($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";
+}
+
+/**
+ * If $haystack is a full mailbox name and $needle is the mailbox
+ * separator character, returns the last part of the mailbox name.
+ *
+ * @param string haystack full mailbox name to search
+ * @param string needle the mailbox separator character
+ * @return string the last part of the mailbox name
+ * @since 1.0
+ */
+function readShortMailboxName($haystack, $needle) {
+
+ if ($needle == '') {
+ $elem = $haystack;
+ } else {
+ $parts = explode($needle, $haystack);
+ $elem = array_pop($parts);
+ while ($elem == '' && count($parts)) {
+ $elem = array_pop($parts);
+ }
+ }
+ return( $elem );
+}
+
+
+/**
+ * get_location
+ *
+ * Determines the location to forward to, relative to your server.
+ * This is used in HTTP Location: redirects.
+ * If this doesnt work correctly for you (although it should), you can
+ * remove all this code except the last two lines, and have it return
+ * the right URL for your site, something like:
+ *
+ * http://www.example.com/squirrelmail/
+ *
+ * @return string the base url for this SquirrelMail installation
+ * @since 1.0
+ */
+function get_location () {
+
+ global $imap_server_type;
+
+ /* Get the path, handle virtual directories */
+ if(strpos(php_self(), '?')) {
+ $path = substr(php_self(), 0, strpos(php_self(), '?'));
+ } else {
+ $path = php_self();
+ }
+ $path = substr($path, 0, strrpos($path, '/'));
+ if ( sqgetGlobalVar('sq_base_url', $full_url, SQ_SESSION) ) {
+ return $full_url . $path;
+ }
- /* 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))];
+ /* Check if this is a HTTPS or regular HTTP request. */
+ $proto = 'http://';
+
+ /*
+ * If you have 'SSLOptions +StdEnvVars' in your apache config
+ * OR if you have HTTPS=on in your HTTP_SERVER_VARS
+ * OR if you are on port 443
+ */
+ $getEnvVar = getenv('HTTPS');
+ if ((isset($getEnvVar) && !strcasecmp($getEnvVar, 'on')) ||
+ (sqgetGlobalVar('HTTPS', $https_on, SQ_SERVER) && !strcasecmp($https_on, 'on')) ||
+ (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER) && $server_port == 443)) {
+ $proto = 'https://';
+ }
+
+ /* Get the hostname from the Host header or server config. */
+ if ( !sqgetGlobalVar('HTTP_HOST', $host, SQ_SERVER) || empty($host) ) {
+ if ( !sqgetGlobalVar('SERVER_NAME', $host, SQ_SERVER) || empty($host) ) {
+ $host = '';
}
-
- return $String;
+ }
+
+ $port = '';
+ if (! strstr($host, ':')) {
+ if (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER)) {
+ if (($server_port != 80 && $proto == 'http://') ||
+ ($server_port != 443 && $proto == 'https://')) {
+ $port = sprintf(':%d', $server_port);
+ }
+ }
+ }
+
+ /* this is a workaround for the weird macosx caching that
+ causes Apache to return 16080 as the port number, which causes
+ SM to bail */
+
+ if ($imap_server_type == 'macosx' && $port == ':16080') {
+ $port = '';
}
+ /* Fallback is to omit the server name and use a relative */
+ /* URI, although this is not RFC 2616 compliant. */
+ $full_url = ($host ? $proto . $host . $port : '');
+ sqsession_register($full_url, 'sq_base_url');
+ return $full_url . $path;
+}
+
+
+/**
+ * Encrypts password
+ *
+ * These functions are used to encrypt the password before it is
+ * stored in a cookie. The encryption key is generated by
+ * OneTimePadCreate();
+ *
+ * @param string $string the (password)string to encrypt
+ * @param string $epad the encryption key
+ * @return string the base64-encoded encrypted password
+ * @since 1.0
+ */
+function OneTimePadEncrypt ($string, $epad) {
+ $pad = base64_decode($epad);
+
+ if (strlen($pad)>0) {
+ // make sure that pad is longer than string
+ while (strlen($string)>strlen($pad)) {
+ $pad.=$pad;
+ }
+ } else {
+ // FIXME: what should we do when $epad is not base64 encoded or empty.
+ }
+
+ $encrypted = '';
+ for ($i = 0; $i < strlen ($string); $i++) {
+ $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i]));
+ }
+
+ return base64_encode($encrypted);
+}
+
+/**
+ * Decrypts a password from the cookie
+ *
+ * Decrypts a password from the cookie, encrypted by OneTimePadEncrypt.
+ * This uses the encryption key that is stored in the session.
+ *
+ * @param string $string the string to decrypt
+ * @param string $epad the encryption key from the session
+ * @return string the decrypted password
+ * @since 1.0
+ */
+function OneTimePadDecrypt ($string, $epad) {
+ $pad = base64_decode($epad);
+
+ if (strlen($pad)>0) {
+ // make sure that pad is longer than string
+ while (strlen($string)>strlen($pad)) {
+ $pad.=$pad;
+ }
+ } else {
+ // FIXME: what should we do when $epad is not base64 encoded or empty.
+ }
+
+ $encrypted = base64_decode ($string);
+ $decrypted = '';
+ for ($i = 0; $i < strlen ($encrypted); $i++) {
+ $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i]));
+ }
+
+ return $decrypted;
+}
+
+
+/**
+ * Randomizes 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.
+ *
+ * @param mixed $val a value to seed the random number generator. mixed = integer or string.
+ * @return void
+ * @since 1.0
+ */
+function sq_mt_seed($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)) {
+ $Val = crc32($Val);
+ }
+
+ if ($Val < 0) {
+ $Val *= -1;
+ }
+
+ if ($Val == 0) {
+ return;
+ }
+
+ mt_srand(($Val ^ mt_rand(0, $Max)) & $Max);
+}
+
+
+/**
+ * Init random number generator
+ *
+ * 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.
+ *
+ * @return void
+ * @since 1.0
+ */
+function sq_mt_randomize() {
+ static $randomized;
+
+ if ($randomized) {
+ return;
+ }
+
+ /* Global. */
+ sqgetGlobalVar('REMOTE_PORT', $remote_port, SQ_SERVER);
+ sqgetGlobalVar('REMOTE_ADDR', $remote_addr, SQ_SERVER);
+ sq_mt_seed((int)((double) microtime() * 1000000));
+ sq_mt_seed(md5($remote_port . $remote_addr . getmypid()));
+
+ /* getrusage */
+ if (function_exists('getrusage')) {
+ /* Avoid warnings with Win32 */
+ $dat = @getrusage();
+ if (isset($dat) && is_array($dat)) {
+ $Str = '';
+ foreach ($dat as $k => $v)
+ {
+ $Str .= $k . $v;
+ }
+ sq_mt_seed(md5($Str));
+ }
+ }
+
+ if(sqgetGlobalVar('UNIQUE_ID', $unique_id, SQ_SERVER)) {
+ sq_mt_seed(md5($unique_id));
+ }
+
+ $randomized = 1;
+}
+
+/**
+ * Creates encryption key
+ *
+ * Creates an encryption key for encrypting the password stored in the cookie.
+ * The encryption key itself is stored in the session.
+ *
+ * Pad must be longer or equal to encoded string length in 1.4.4/1.5.0 and older.
+ * @param int $length optional, length of the string to generate
+ * @return string the encryption key
+ * @since 1.0
+ */
+function OneTimePadCreate ($length=100) {
+ sq_mt_randomize();
+
+ $pad = '';
+ for ($i = 0; $i < $length; $i++) {
+ $pad .= chr(mt_rand(0,255));
+ }
+
+ return base64_encode($pad);
+}
+
+/**
+ * Returns a string showing the size of the message/attachment.
+ *
+ * @param int $bytes the filesize in bytes
+ * @return string the filesize in human readable format
+ * @since 1.0
+ */
+function show_readable_size($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 . ' ' . $type;
+}
+
+/**
+ * Generates a random string from the character set you pass in
+ *
+ * @param int $size the length of the string to generate
+ * @param string $chars a string containing the characters to use
+ * @param int $flags a flag to add a specific set to the characters to use:
+ * Flags:
+ * 1 = add lowercase a-z to $chars
+ * 2 = add uppercase A-Z to $chars
+ * 4 = add numbers 0-9 to $chars
+ * @return string the random string
+ * @since 1.0
+ */
+function GenerateRandomString($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 */
+
+ $String = '';
+ $j = strlen( $chars ) - 1;
+ while (strlen($String) < $size) {
+ $String .= $chars{mt_rand(0, $j)};
+ }
+
+ return $String;
+}
+
+/**
+ * Escapes special characters for use in IMAP commands.
+ *
+ * @param string $str the string to escape
+ * @return string the escaped string
+ * @since 1.0.3
+ */
+function quoteimap($str) {
+ return preg_replace("/([\"\\\\])/", "\\\\$1", $str);
+}
+
+/**
+ * Trims array
+ *
+ * Trims every element in the array, ie. remove the first char of each element
+ * @param array $array the array to trim
+ * @since 1.2.0
+ */
+function TrimArray(&$array) {
+ foreach ($array as $k => $v) {
+ global $$k;
+ if (is_array($$k)) {
+ foreach ($$k as $k2 => $v2) {
+ $$k[$k2] = substr($v2, 1);
+ }
+ } else {
+ $$k = substr($v, 1);
+ }
+
+ /* Re-assign back to array. */
+ $array[$k] = $$k;
+ }
+}
+
+/**
+ * Create compose link
+ *
+ * Returns a link to the compose-page, taking in consideration
+ * the compose_in_new and javascript settings.
+ * @param string $url the URL to the compose page
+ * @param string $text the link text, default "Compose"
+ * @param string $target (since 1.4.3) url target
+ * @return string a link to the compose page
+ * @since 1.4.2
+ */
+function makeComposeLink($url, $text = null, $target='') {
+ global $compose_new_win,$javascript_on, $compose_width, $compose_height;
+
+ if(!$text) {
+ $text = _("Compose");
+ }
+
+ // if not using "compose in new window", make
+ // regular link and be done with it
+ if($compose_new_win != '1') {
+ return makeInternalLink($url, $text, $target);
+ }
+
+ // build the compose in new window link...
+
+
+ // if javascript is on, use onclick event to handle it
+ if($javascript_on) {
+ sqgetGlobalVar('base_uri', $base_uri, SQ_SESSION);
+ $compuri = SM_BASE_URI.$url;
+ return "<a href=\"javascript:void(0)\" onclick=\"comp_in_new('$compuri','$compose_width','$compose_height')\">$text</a>";
+ }
+
+ // otherwise, just open new window using regular HTML
+ return makeInternalLink($url, $text, '_blank');
+}
+
+/**
+ * Print variable
+ *
+ * sm_print_r($some_variable, [$some_other_variable [, ...]]);
+ *
+ * Debugging function - does the same as print_r, but makes sure special
+ * characters are converted to htmlentities first. This will allow
+ * values like <some@email.address> to be displayed.
+ * The output is wrapped in <<pre>> and <</pre>> tags.
+ * Since 1.4.2 accepts unlimited number of arguments.
+ * @since 1.4.1
+ * @return void
+ */
+function sm_print_r() {
+ ob_start(); // Buffer output
+ foreach(func_get_args() as $var) {
+ print_r($var);
+ echo "\n";
+ // php has get_class_methods function that can print class methods
+ if (is_object($var)) {
+ // get class methods if $var is object
+ $aMethods=get_class_methods(get_class($var));
+ // make sure that $aMethods is array and array is not empty
+ if (is_array($aMethods) && $aMethods!=array()) {
+ echo "Object methods:\n";
+ foreach($aMethods as $method) {
+ echo '* ' . $method . "\n";
+ }
+ }
+ echo "\n";
+ }
+ }
+ $buffer = ob_get_contents(); // Grab the print_r output
+ ob_end_clean(); // Silently discard the output & stop buffering
+ print '<div align="left"><pre>';
+ print htmlentities($buffer);
+ print '</pre></div>';
+}
+
+/**
+ * version of fwrite which checks for failure
+ * @param resource $fp
+ * @param string $string
+ * @return number of written bytes. false on failure
+ * @since 1.4.3
+ */
+function sq_fwrite($fp, $string) {
+ // write to file
+ $count = @fwrite($fp,$string);
+ // the number of bytes written should be the length of the string
+ if($count != strlen($string)) {
+ return FALSE;
+ }
+
+ return $count;
+}
+
+/**
+ * sq_get_html_translation_table
+ *
+ * Returns the translation table used by sq_htmlentities()
+ *
+ * @param integer $table html translation table. Possible values (without quotes):
+ * <ul>
+ * <li>HTML_ENTITIES - full html entities table defined by charset</li>
+ * <li>HTML_SPECIALCHARS - html special characters table</li>
+ * </ul>
+ * @param integer $quote_style quote encoding style. Possible values (without quotes):
+ * <ul>
+ * <li>ENT_COMPAT - (default) encode double quotes</li>
+ * <li>ENT_NOQUOTES - don't encode double or single quotes</li>
+ * <li>ENT_QUOTES - encode double and single quotes</li>
+ * </ul>
+ * @param string $charset charset used for encoding. default to us-ascii, 'auto' uses $default_charset global value.
+ * @return array html translation array
+ * @since 1.5.1
+ */
+function sq_get_html_translation_table($table,$quote_style=ENT_COMPAT,$charset='us-ascii') {
+ global $default_charset;
+
+ if ($table == HTML_SPECIALCHARS) $charset='us-ascii';
+
+ // Start array with ampersand
+ $sq_html_ent_table = array( "&" => '&' );
+
+ // < and >
+ $sq_html_ent_table = array_merge($sq_html_ent_table,
+ array("<" => '<',
+ ">" => '>')
+ );
+ // double quotes
+ if ($quote_style == ENT_COMPAT)
+ $sq_html_ent_table = array_merge($sq_html_ent_table,
+ array("\"" => '"')
+ );
+
+ // double and single quotes
+ if ($quote_style == ENT_QUOTES)
+ $sq_html_ent_table = array_merge($sq_html_ent_table,
+ array("\"" => '"',
+ "'" => ''')
+ );
+
+ if ($charset=='auto') $charset=$default_charset;
+
+ // add entities that depend on charset
+ switch($charset){
+ case 'iso-8859-1':
+ include_once(SM_PATH . 'functions/htmlentities/iso-8859-1.php');
+ break;
+ case 'utf-8':
+ include_once(SM_PATH . 'functions/htmlentities/utf-8.php');
+ break;
+ case 'us-ascii':
+ default:
+ break;
+ }
+ // return table
+ return $sq_html_ent_table;
+}
+
+/**
+ * sq_htmlentities
+ *
+ * Convert all applicable characters to HTML entities.
+ * Minimal php requirement - v.4.0.5.
+ *
+ * Function is designed for people that want to use full power of htmlentities() in
+ * i18n environment.
+ *
+ * @param string $string string that has to be sanitized
+ * @param integer $quote_style quote encoding style. Possible values (without quotes):
+ * <ul>
+ * <li>ENT_COMPAT - (default) encode double quotes</li>
+ * <li>ENT_NOQUOTES - don't encode double or single quotes</li>
+ * <li>ENT_QUOTES - encode double and single quotes</li>
+ * </ul>
+ * @param string $charset charset used for encoding. defaults to 'us-ascii', 'auto' uses $default_charset global value.
+ * @return string sanitized string
+ * @since 1.5.1
+ */
+function sq_htmlentities($string,$quote_style=ENT_COMPAT,$charset='us-ascii') {
+ // get translation table
+ $sq_html_ent_table=sq_get_html_translation_table(HTML_ENTITIES,$quote_style,$charset);
+ // convert characters
+ return str_replace(array_keys($sq_html_ent_table),array_values($sq_html_ent_table),$string);
+}
+
+/**
+ * Tests if string contains 8bit symbols.
+ *
+ * If charset is not set, function defaults to default_charset.
+ * $default_charset global must be set correctly if $charset is
+ * not used.
+ * @param string $string tested string
+ * @param string $charset charset used in a string
+ * @return bool true if 8bit symbols are detected
+ * @since 1.5.1 and 1.4.4
+ */
+function sq_is8bit($string,$charset='') {
+ global $default_charset;
+
+ if ($charset=='') $charset=$default_charset;
+
+ /**
+ * Don't use \240 in ranges. Sometimes RH 7.2 doesn't like it.
+ * Don't use \200-\237 for iso-8859-x charsets. This range
+ * stores control symbols in those charsets.
+ * Use preg_match instead of ereg in order to avoid problems
+ * with mbstring overloading
+ */
+ if (preg_match("/^iso-8859/i",$charset)) {
+ $needle='/\240|[\241-\377]/';
+ } else {
+ $needle='/[\200-\237]|\240|[\241-\377]/';
+ }
+ return preg_match("$needle",$string);
+}
+
+/**
+ * Replacement of mb_list_encodings function
+ *
+ * This function provides replacement for function that is available only
+ * in php 5.x. Function does not test all mbstring encodings. Only the ones
+ * that might be used in SM translations.
+ *
+ * Supported strings are stored in session in order to reduce number of
+ * mb_internal_encoding function calls.
+ *
+ * If you want to test all mbstring encodings - fill $list_of_encodings
+ * array.
+ * @return array list of encodings supported by php mbstring extension
+ * @since 1.5.1 and 1.4.6
+ */
+function sq_mb_list_encodings() {
+ if (! function_exists('mb_internal_encoding'))
+ return array();
+
+ // php 5+ function
+ if (function_exists('mb_list_encodings')) {
+ $ret = mb_list_encodings();
+ array_walk($ret,'sq_lowercase_array_vals');
+ return $ret;
+ }
+
+ // don't try to test encodings, if they are already stored in session
+ if (sqgetGlobalVar('mb_supported_encodings',$mb_supported_encodings,SQ_SESSION))
+ return $mb_supported_encodings;
+
+ // save original encoding
+ $orig_encoding=mb_internal_encoding();
+
+ $list_of_encoding=array(
+ 'pass',
+ 'auto',
+ 'ascii',
+ 'jis',
+ 'utf-8',
+ 'sjis',
+ 'euc-jp',
+ 'iso-8859-1',
+ 'iso-8859-2',
+ 'iso-8859-7',
+ 'iso-8859-9',
+ 'iso-8859-15',
+ 'koi8-r',
+ 'koi8-u',
+ 'big5',
+ 'gb2312',
+ 'gb18030',
+ 'windows-1251',
+ 'windows-1255',
+ 'windows-1256',
+ 'tis-620',
+ 'iso-2022-jp',
+ 'euc-cn',
+ 'euc-kr',
+ 'euc-tw',
+ 'uhc',
+ 'utf7-imap');
+
+ $supported_encodings=array();
+
+ foreach ($list_of_encoding as $encoding) {
+ // try setting encodings. suppress warning messages
+ if (@mb_internal_encoding($encoding))
+ $supported_encodings[]=$encoding;
+ }
+
+ // restore original encoding
+ mb_internal_encoding($orig_encoding);
+
+ // register list in session
+ sqsession_register($supported_encodings,'mb_supported_encodings');
+
+ return $supported_encodings;
+}
+
+/**
+ * Callback function used to lowercase array values.
+ * @param string $val array value
+ * @param mixed $key array key
+ * @since 1.5.1 and 1.4.6
+ */
+function sq_lowercase_array_vals(&$val,$key) {
+ $val = strtolower($val);
+}
+
+
+/**
+ * Function returns number of characters in string.
+ *
+ * Returned number might be different from number of bytes in string,
+ * if $charset is multibyte charset. Detection depends on mbstring
+ * functions. If mbstring does not support tested multibyte charset,
+ * vanilla string length function is used.
+ * @param string $str string
+ * @param string $charset charset
+ * @since 1.5.1 and 1.4.6
+ * @return integer number of characters in string
+ */
+function sq_strlen($str, $charset=null){
+ // default option
+ if (is_null($charset)) return strlen($str);
+
+ // lowercase charset name
+ $charset=strtolower($charset);
+
+ // use automatic charset detection, if function call asks for it
+ if ($charset=='auto') {
+ global $default_charset, $squirrelmail_language;
+ set_my_charset();
+ $charset=$default_charset;
+ if ($squirrelmail_language=='ja_JP') $charset='euc-jp';
+ }
+
+ // Use mbstring only with listed charsets
+ $aList_of_mb_charsets=array('utf-8','big5','gb2312','gb18030','euc-jp','euc-cn','euc-tw','euc-kr');
+
+ // calculate string length according to charset
+ if (in_array($charset,$aList_of_mb_charsets) && in_array($charset,sq_mb_list_encodings())) {
+ $real_length = mb_strlen($str,$charset);
+ } else {
+ // own strlen detection code is removed because missing strpos,
+ // strtoupper and substr implementations break string wrapping.
+ $real_length=strlen($str);
+ }
+ return $real_length;
+}
+
+/**
+ * string padding with multibyte support
+ *
+ * @link http://www.php.net/str_pad
+ * @param string $string original string
+ * @param integer $width padded string width
+ * @param string $pad padding symbols
+ * @param integer $padtype padding type
+ * (internal php defines, see str_pad() description)
+ * @param string $charset charset used in original string
+ * @return string padded string
+ */
+function sq_str_pad($string, $width, $pad, $padtype, $charset='') {
+
+ $charset = strtolower($charset);
+ $padded_string = '';
+
+ switch ($charset) {
+ case 'utf-8':
+ case 'big5':
+ case 'gb2312':
+ case 'euc-kr':
+ /*
+ * all multibyte charsets try to increase width value by
+ * adding difference between number of bytes and real length
+ */
+ $width = $width - sq_strlen($string,$charset) + strlen($string);
+ default:
+ $padded_string=str_pad($string,$width,$pad,$padtype);
+ }
+ return $padded_string;
+}
+
+/**
+ * Wrapper that is used to switch between vanilla and multibyte substr
+ * functions.
+ * @param string $string
+ * @param integer $start
+ * @param integer $length
+ * @param string $charset
+ * @return string
+ * @since 1.5.1
+ * @link http://www.php.net/substr
+ * @link http://www.php.net/mb_substr
+ */
+function sq_substr($string,$start,$length,$charset='auto') {
+ // use automatic charset detection, if function call asks for it
+ if ($charset=='auto') {
+ global $default_charset, $squirrelmail_language;
+ set_my_charset();
+ $charset=$default_charset;
+ if ($squirrelmail_language=='ja_JP') $charset='euc-jp';
+ }
+ $charset = strtolower($charset);
+ if (function_exists('mb_internal_encoding') &&
+ in_array($charset,sq_mb_list_encodings())) {
+ return mb_substr($string,$start,$length,$charset);
+ }
+ // TODO: add mbstring independent code
+
+ // use vanilla string functions as last option
+ return substr($string,$start,$length);
+}
+
+/**
+ * Wrapper that is used to switch between vanilla and multibyte strpos
+ * functions.
+ * @param string $haystack
+ * @param mixed $needle
+ * @param integer $offset
+ * @param string $charset
+ * @return string
+ * @since 1.5.1
+ * @link http://www.php.net/strpos
+ * @link http://www.php.net/mb_strpos
+ */
+function sq_strpos($haystack,$needle,$offset,$charset='auto') {
+ // use automatic charset detection, if function call asks for it
+ if ($charset=='auto') {
+ global $default_charset, $squirrelmail_language;
+ set_my_charset();
+ $charset=$default_charset;
+ if ($squirrelmail_language=='ja_JP') $charset='euc-jp';
+ }
+ $charset = strtolower($charset);
+ if (function_exists('mb_internal_encoding') &&
+ in_array($charset,sq_mb_list_encodings())) {
+ return mb_strpos($haystack,$needle,$offset,$charset);
+ }
+ // TODO: add mbstring independent code
+
+ // use vanilla string functions as last option
+ return strpos($haystack,$needle,$offset);
+}
+
+/**
+ * Wrapper that is used to switch between vanilla and multibyte strtoupper
+ * functions.
+ * @param string $string
+ * @param string $charset
+ * @return string
+ * @since 1.5.1
+ * @link http://www.php.net/strtoupper
+ * @link http://www.php.net/mb_strtoupper
+ */
+function sq_strtoupper($string,$charset='auto') {
+ // use automatic charset detection, if function call asks for it
+ if ($charset=='auto') {
+ global $default_charset,$squirrelmail_language;
+ set_my_charset();
+ $charset=$default_charset;
+ if ($squirrelmail_language=='ja_JP') $charset='euc-jp';
+ }
+ $charset = strtolower($charset);
+ if (function_exists('mb_strtoupper') &&
+ in_array($charset,sq_mb_list_encodings())) {
+ return mb_strtoupper($string,$charset);
+ }
+ // TODO: add mbstring independent code
+
+ // use vanilla string functions as last option
+ return strtoupper($string);
+}
+
+/**
+ * Counts 8bit bytes in string
+ * @param string $string tested string
+ * @return integer number of 8bit bytes
+ */
+function sq_count8bit($string) {
+ $count=0;
+ for ($i=0; $i<strlen($string); $i++) {
+ if (ord($string[$i]) > 127) $count++;
+ }
+ return $count;
+}
+
+/**
+ * Callback function to trim whitespace from a value, to be used in array_walk
+ * @param string $value value to trim
+ * @since 1.5.2 and 1.4.7
+ */
+function sq_trim_value ( &$value ) {
+ $value = trim($value);
+}
+
?>
projects / squirrelmail.git / blobdiff