X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=functions%2Fstrings.php;h=028c99c25c622a1765330d2e73d7407ff8feb4bb;hb=86e6a9ebfbfd6ae038384c1b723e55701b6a213f;hp=6787c40d93c523be94adc2b5fab68213ce623803;hpb=d6f5495a8022bebb44f2dc31278ecea0d3992854;p=squirrelmail.git diff --git a/functions/strings.php b/functions/strings.php index 6787c40d..5f99b385 100644 --- a/functions/strings.php +++ b/functions/strings.php @@ -1,478 +1,1292 @@ '; + } + 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 ++; - } +/** + * 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; + } +} + +/** + * 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); + } + } + + // 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 + $citeLevel = 0; + + // the main loop, whenever we start a newline of input text + // we start from here + while ($pos < $length) { + // we're at the beginning of a line, get the new cite level + $newCiteLevel = 0; + + while (($pos < $length) && (sq_substr($body,$pos,1) == '>')) { + $newCiteLevel++; + $pos++; + + // skip over any spaces interleaved among the cite markers + while (($pos < $length) && (sq_substr($body,$pos,1) == ' ')) { + + $pos++; - // Go to the next line if we have more to process - if ($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 .= ' ' . $CurrentRest; + if ($pos >= $length) { + break; } - else - { - $body .= "\n" . $lines[$i]; - $PreviousSpaces = $CurrentSpaces; + } + + // special case: if this is a blank line then maintain it + // (i.e. try to preserve original paragraph breaks) + // unless they occur at the very beginning of the text + if ((sq_substr($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; } - $body .= "\n"; - } - - - /** Returns an array of email addresses **/ - function parseAddrs($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 $to_line; - } + // if the cite level has changed, then start a new line + // with the new cite level. + if (($citeLevel != $newCiteLevel) && ($pos > ($newCiteLevel + 1)) && ($outStringCol != 0)) { + sqMakeNewLine ($outString, 0, $outStringCol); + } - function translateText(&$body, $wrap_at, $charset) { - global $where, $what; // from searching + $citeLevel = $newCiteLevel; - if (!isset($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, '>', $pos) === $pos) - { - $pos += 4; - $Quotes ++; - } - else - { - break; - } - } - - if ($Quotes > 1) - $line = "$line"; - elseif ($Quotes) - $line = "$line"; - - $body_ary[$i] = $line; - } - $body = "
" . implode("\n", $body_ary) . "
"; - } + // prepend the quote level if necessary + if ($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++; + } - /* SquirrelMail version number -- DO NOT CHANGE */ - $version = "1.0pre1 (cvs)"; + // find the next newline -- we don't want to go further than that + $nextNewline = sq_strpos ($body, "\n", $pos); + if ($nextNewline === FALSE) { + $nextNewline = $length; + } + // Don't wrap unquoted lines at all. For now the textarea + // will work fine for this. Maybe revisit this later though + // (for completeness more than anything else, I think) + if ($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). "
"; + if (($nextNewline + 1 == $length) && (sq_substr($body,$nextNewline,1) == "\n")) { + $nextNewline++; + } - function find_mailbox_name ($mailbox) { + // 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++; + } + } /* - $mailbox = trim($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; -*/ + $ldnspacecnt = 0; + if ($mypos == $nextNewline+1) { + while (($mypos < $length) && ($body{$mypos} == ' ')) { + $ldnspacecnt++; + } + } +*/ - if (ereg(" *\"([^\r\n\"]*)\"[ \r\n]*$", $mailbox, $regs)) - return $regs[1]; - ereg(" *([^ \r\n\"]*)[ \r\n]*$",$mailbox,$regs); - return $regs[1]; + $firstword = sq_substr($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; + $outStringCol--; + continue; + } - } + } - function replace_spaces ($string) { - return str_replace(" ", " ", $string); - } + $outString .= sq_substr ($body, $pos, ($lastRealChar - $pos + 1)); + $outStringCol += ($lastRealChar - $pos); + $pos = $nextNewline + 1; + continue; + } - function replace_escaped_spaces ($string) { - return str_replace(" ", " ", $string); - } + $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; + } - 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; - } + // 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 = $eol; + } + } - // These functions are used to encrypt the passowrd before it is - // stored in a cookie. - function OneTimePadEncrypt ($string, $pad) { - for ($i = 0; $i < strlen ($string); $i++) { - $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i])); - } + // 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, $outStringCol); + continue; + } - return base64_encode($encrypted); - } + // 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, $outStringCol); + } + } + } - function OneTimePadDecrypt ($string, $pad) { - $encrypted = base64_decode ($string); - - for ($i = 0; $i < strlen ($encrypted); $i++) { - $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i])); - } + return $outString; +} - return $decrypted; - } +/** + * 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, $squirrelmail_language; + // Use custom wrapping function, if translation provides it + if (isset($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, $wrap); + return; + } + } - // Randomize the mt_rand() function. Toss this in strings or - // integers and it will seed the generator appropriately. - // With strings, it is better to get them long. Use md5() to - // lengthen smaller strings. - function sq_mt_seed($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]; - $Pos ++; - } - } - } + ereg("^([\t >]*)([^\t >].*)?$", $line, $regs); + $beginning_spaces = $regs[1]; + if (isset($regs[2])) { + $words = explode(' ', $regs[2]); + } else { + $words = ''; + } - if ($Val < 0) - $Val *= -1; - if ($Val = 0) - return; + $i = 0; + $line = $beginning_spaces; - mt_srand(($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++) { - $pad .= chr(mt_rand(0,255)); - } + while ($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 ++; - return $pad; - } + /* Add more words (as long as they fit) */ + while ($line_len < $wrap && $i < count($words)) { + $line .= ' ' . $words[$i]; + $i++; + if (isset($words[$i])) + $line_len += sq_strlen($words[$i],$charset) + 1; + else + $line_len += 1; + } - // Check if we have a required PHP-version. Return TRUE if we do, - // or FALSE if we don't. - // To check for 4.0.1, use sqCheckPHPVersion(4,0,1) - // To check for 4.0b3, use sqCheckPHPVersion(4,0,-3) - // Does not handle betas like 4.0.1b1 or development versions - function sqCheckPHPVersion($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 . ' ' . $type . ''; - } + /* Skip spaces if they are the first thing on a continued line */ + while (!isset($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; + } - /* 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))]; + $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; + } + + /* 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 "$text"; + } + + // otherwise, just open new window using regular HTML + return makeInternalLink($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 to be displayed. + * The output is wrapped in <
> and <
> 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"; + } + } + $buffer = ob_get_contents(); // Grab the print_r output + ob_end_clean(); // Silently discard the output & stop buffering + print '
';
+    print htmlentities($buffer);
+    print '
'; +} + +/** + * 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): + * + * @param integer $quote_style quote encoding style. Possible values (without quotes): + * + * @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): + * + * @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 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); +} + ?>