X-Git-Url: https://vcs.fsf.org/?p=squirrelmail.git;a=blobdiff_plain;f=functions%2Fstrings.php;h=e7d6af74033ec58d5a7e30ef4df965aae748df54;hp=12b0b47bb42dfd1cdbd2985ce187ac74db2ee339;hb=7669bfaccd836d3f781ab1c6520687295d377a65;hpb=146e0c45c0e39b83611399805b1f7f1489a53b97 diff --git a/functions/strings.php b/functions/strings.php index 12b0b47b..e7d6af74 100644 --- a/functions/strings.php +++ b/functions/strings.php @@ -1,509 +1,462 @@ = strlen($haystack)) - return -1; - $pos++; - } - return $pos; - } - - // Wraps text at $wrap characters - // Has a problem with special HTML characters, so call this before - // you do character translation. - // Specifically, ' comes up as 5 characters instead of 1. - // This should not add newlines to the end of lines. - function sqWordWrap(&$line, $wrap) { - ereg("^([\t >]*)([^\t >].*)?$", $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) + strlen($words[$i]) + 2; - if (isset($words[$i + 1])) - $line_len += strlen($words[$i + 1]); - $i ++; - - // Add more words (as long as they fit) - while ($line_len < $wrap && $i < count($words)) { +/** + * strings.php + * + * Copyright (c) 1999-2003 The SquirrelMail Project Team + * Licensed under the GNU GPL. For full terms see the file COPYING. + * + * This code provides various string manipulation functions that are + * used by the rest of the Squirrelmail code. + * + * $Id$ + */ + +/** + * SquirrelMail version number -- DO NOT CHANGE + */ +global $version; +$version = '1.4.0 RC2a'; + +/** + * SquirrelMail internal version number -- DO NOT CHANGE + * $sm_internal_version = array (release, major, minor) + */ +global $SQM_INTERNAL_VERSION; +$SQM_INTERNAL_VERSION = array(1,4,0); + + +/** + * 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, $wrap) { + ereg("^([\t >]*)([^\t >].*)?$", $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) + strlen($words[$i]) + 2; + if (isset($words[$i + 1])) + $line_len += strlen($words[$i + 1]); + $i ++; + + /* Add more words (as long as they fit) */ + while ($line_len < $wrap && $i < count($words)) { $line .= ' ' . $words[$i]; $i++; - if (isset($words[$i])) + if (isset($words[$i])) $line_len += strlen($words[$i]) + 1; - else - $line_len += 1; - } - - // Skip spaces if they are the first thing on a continued line - while (!isset($words[$i]) && $i < count($words)) { + 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" . $beginning_spaces; - } - } - } - - - // Does the opposite of sqWordWrap() - function sqUnWordWrap(&$body) - { - $lines = explode("\n", $body); - $body = ""; - $PreviousSpaces = ""; - for ($i = 0; $i < count($lines); $i ++) - { - ereg("^([\t >]*)([^\t >].*)?$", $lines[$i], $regs); - $CurrentSpaces = $regs[1]; - if (isset($regs[2])) - $CurrentRest = $regs[2]; - if ($i == 0) - { - $PreviousSpaces = $CurrentSpaces; - $body = $lines[$i]; - } - else if ($PreviousSpaces == $CurrentSpaces && // Do the beginnings match - strlen($lines[$i - 1]) > 65 && // Over 65 characters long - strlen($CurrentRest)) // and there's a line to continue with - { - $body .= ' ' . $CurrentRest; - } - else - { - $body .= "\n" . $lines[$i]; - $PreviousSpaces = $CurrentSpaces; - } - } - $body .= "\n"; - } - - - /** Returns an array of email addresses **/ - /* Be cautious of "user@host.com" */ - function parseAddrs($text) { - if (trim($text) == "") - return array(); - $text = str_replace(' ', '', $text); - $text = ereg_replace('"[^"]*"', '', $text); - $text = ereg_replace('\\([^\\)]*\\)', '', $text); - $text = str_replace(',', ';', $text); - $array = explode(';', $text); - for ($i = 0; $i < count ($array); $i++) { - $array[$i] = eregi_replace ("^.*[<]", '', $array[$i]); - $array[$i] = eregi_replace ("[>].*$", '', $array[$i]); - } - return $array; - } - - /** Returns a line of comma separated email addresses from an array **/ - function getLineOfAddrs($array) { - if (is_array($array)) { + } + + /* Go to the next line if we have more to process */ + if ($i < count($words)) { + $line .= "\n"; + } + } +} + +/** + * Does the opposite of sqWordWrap() + */ +function sqUnWordWrap(&$body) { + $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 $needle is the mailbox + * separator character, returns the last part of the mailbox name. + */ +function readShortMailboxName($haystack, $needle) { + + if ($needle == '') { + $elem = $haystack; + } else { + $parts = explode($needle, $haystack); + $elem = array_pop($parts); + while ($elem == '' && count($parts)) { + $elem = array_pop($parts); + } + } + return( $elem ); +} + +/** + * Returns an array of email addresses. + * Be cautious of "user@host.com" + */ +function parseAddrs($text) { + if (trim($text) == '') + return array(); + $text = str_replace(' ', '', $text); + $text = ereg_replace('"[^"]*"', '', $text); + $text = ereg_replace('\\([^\\)]*\\)', '', $text); + $text = str_replace(',', ';', $text); + $array = explode(';', $text); + for ($i = 0; $i < count ($array); $i++) { + $array[$i] = eregi_replace ('^.*[<]', '', $array[$i]); + $array[$i] = eregi_replace ('[>].*$', '', $array[$i]); + } + return $array; +} + +/** + * Returns a line of comma separated email addresses from an array. + */ +function getLineOfAddrs($array) { + if (is_array($array)) { $to_line = implode(', ', $array); - $to_line = trim(ereg_replace(',,+', ',', $to_line)); - } else { + $to_line = ereg_replace(', (, )+', ', ', $to_line); + $to_line = trim(ereg_replace('^, ', '', $to_line)); + if( substr( $to_line, -1 ) == ',' ) + $to_line = substr( $to_line, 0, -1 ); + } else { $to_line = ''; - } - return $to_line; - } - - function translateText(&$body, $wrap_at, $charset) { - global $where, $what; // from searching - global $url_parser_php; - - if (!isset($url_parser_php)) { - include '../functions/url_parser.php'; - } - - $body_ary = explode("\n", $body); - $PriorQuotes = 0; - for ($i=0; $i < count($body_ary); $i++) { - $line = $body_ary[$i]; - if (strlen($line) - 2 >= $wrap_at) { - sqWordWrap($line, $wrap_at); - } - $line = charset_decode($charset, $line); - $line = str_replace("\t", ' ', $line); - - parseUrl ($line); - - $Quotes = 0; - $pos = 0; - while (1) - { - if ($line[$pos] == ' ') - { - $pos ++; - } - else if (strpos($line, '>', $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) . '
'; - } - - /* SquirrelMail version number -- DO NOT CHANGE */ - $version = '1.0.1 [cvs]'; - - - function find_mailbox_name ($mailbox) { - if (ereg(" *\"([^\r\n\"]*)\"[ \r\n]*$", $mailbox, $regs)) - return $regs[1]; - ereg(" *([^ \r\n\"]*)[ \r\n]*$",$mailbox,$regs); - return $regs[1]; - - } - - function replace_spaces ($string) { - return str_replace(' ', ' ', $string); - } - - function replace_escaped_spaces ($string) { - return str_replace(' ', ' ', $string); - } - - function get_location () { - # This determines the location to forward to relative - # to your server. If this doesnt work correctly for - # you (although it should), you can remove all this - # code except the last two lines, and change the header() - # function to look something like this, customized to - # the location of SquirrelMail on your server: - # - # http://www.myhost.com/squirrelmail/src/login.php - - global $PHP_SELF, $SERVER_NAME, $HTTPS, $HTTP_HOST, $SERVER_PORT; + } + + return( $to_line ); +} - // Get the path - $path = substr($PHP_SELF, 0, strrpos($PHP_SELF, '/')); - - // Check if this is a HTTPS or regular HTTP request - $proto = 'http://'; - if(isset($HTTPS) && !strcasecmp($HTTPS, 'on') ) { +function php_self () { + global $PHP_SELF, $_SERVER; + + if (isset($_SERVER['REQUEST_URI']) && !empty($_SERVER['REQUEST_URI']) ) { + return $_SERVER['REQUEST_URI']; + } + + if (isset($PHP_SELF) && !empty($PHP_SELF)) { + return $PHP_SELF; + } else if (isset($_SERVER['PHP_SELF']) && + !empty($_SERVER['PHP_SELF'])) { + return $_SERVER['PHP_SELF']; + } else { + return ''; + } +} + + +/** + * 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 + */ +function get_location () { + + global $_SERVER, $imap_server_type; + + /* Get the path, handle virtual directories */ + $path = substr(php_self(), 0, strrpos(php_self(), '/')); + + /* 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($getEnvVar, 'on')) || + (isset($_SERVER['HTTPS']) && + !strcasecmp($_SERVER['HTTPS'], 'on')) || + (isset($_SERVER['SERVER_PORT']) && + $_SERVER['SERVER_PORT'] == 443)) { $proto = 'https://'; - } - - // Get the hostname from the Host header or server config. - $host = ''; - if (isset($HTTP_HOST) && !empty($HTTP_HOST)) - { - $host = $HTTP_HOST; - } - else if (isset($SERVER_NAME) && !empty($SERVER_NAME)) - { - $host = $SERVER_NAME; - } - - $port = ''; - if (! strstr($host, ':')) - { - if (isset($SERVER_PORT)) { - if (($SERVER_PORT != 80 && $proto == 'http://') - || ($SERVER_PORT != 443 && $proto == 'https://')) { - $port = sprintf(':%d', $SERVER_PORT); - } - } - } - - if ($host) - return $proto . $host . $port . $path; - - // Fallback is to omit the server name and use a relative URI, - // although this is not RFC 2616 compliant. - return $path; - } - - function sqStripSlashes($string) { - if (get_magic_quotes_gpc()) { - $string = stripslashes($string); - } - return $string; - } - - - // These functions are used to encrypt the passowrd before it is - // stored in a cookie. - function OneTimePadEncrypt ($string, $epad) { - $pad = base64_decode($epad); - $encrypted = ''; - for ($i = 0; $i < strlen ($string); $i++) { - $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i])); - } - - return base64_encode($encrypted); - } - - function OneTimePadDecrypt ($string, $epad) { - $pad = base64_decode($epad); - $encrypted = base64_decode ($string); - $decrypted = ''; - for ($i = 0; $i < strlen ($encrypted); $i++) { - $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i])); - } - - return $decrypted; - } - - - // Randomize the mt_rand() function. Toss this in strings or - // integers and it will seed the generator appropriately. - // With strings, it is better to get them long. Use md5() to - // lengthen smaller strings. - function sq_mt_seed($Val) - { - // if mt_getrandmax() does not return a 2^n - 1 number, - // this might not work well. This uses $Max as a bitmask. - $Max = mt_getrandmax(); - - if (! is_int($Val)) - { - if (function_exists('crc32')) - { - $Val = crc32($Val); - } - else - { - $Str = $Val; - $Pos = 0; - $Val = 0; - $Mask = $Max / 2; - $HighBit = $Max ^ $Mask; - while ($Pos < strlen($Str)) - { - if ($Val & $HighBit) - { - $Val = (($Val & $Mask) << 1) + 1; - } - else - { - $Val = ($Val & $Mask) << 1; - } - $Val ^= $Str[$Pos]; - $Pos ++; - } - } - } - - if ($Val < 0) - $Val *= -1; - if ($Val = 0) - return; - - mt_srand(($Val ^ mt_rand(0, $Max)) & $Max); - } - - - // This function initializes the random number generator fairly well. - // It also only initializes it once, so you don't accidentally get - // the same 'random' numbers twice in one session. - function sq_mt_randomize() - { - global $REMOTE_PORT, $REMOTE_ADDR, $UNIQUE_ID; - static $randomized; - - if ($randomized) - return; - - // Global - sq_mt_seed((int)((double) microtime() * 1000000)); - sq_mt_seed(md5($REMOTE_PORT . $REMOTE_ADDR . getmypid())); - - // getrusage - if (function_exists('getrusage')) { - $dat = getrusage(); - $Str = ''; - foreach ($dat as $k => $v) - { - $Str .= $k . $v; - } - sq_mt_seed(md5($Str)); - } - - // Apache-specific - sq_mt_seed(md5($UNIQUE_ID)); - - $randomized = 1; - } - - function OneTimePadCreate ($length=100) { - sq_mt_randomize(); - - $pad = ''; - for ($i = 0; $i < $length; $i++) { - $pad .= chr(mt_rand(0,255)); - } - - return base64_encode($pad); - } - - // Check if we have a required PHP-version. Return TRUE if we do, - // or FALSE if we don't. - // To check for 4.0.1, use sqCheckPHPVersion(4,0,1) - // To check for 4.0b3, use sqCheckPHPVersion(4,0,-3) - // Does not handle betas like 4.0.1b1 or development versions - function sqCheckPHPVersion($major, $minor, $release) { - - $ver = phpversion(); - eregi('^([0-9]+)\\.([0-9]+)(.*)', $ver, $regs); - - // Parse the version string - $vmajor = strval($regs[1]); - $vminor = strval($regs[2]); - $vrel = $regs[3]; - if($vrel[0] == ".") - $vrel = strval(substr($vrel, 1)); - if($vrel[0] == 'b' || $vrel[0] == 'B') - $vrel = - strval(substr($vrel, 1)); - if($vrel[0] == 'r' || $vrel[0] == 'R') - $vrel = - strval(substr($vrel, 2))/10; - - // Compare major version - if($vmajor < $major) return false; - if($vmajor > $major) return true; + } + + /* Get the hostname from the Host header or server config. */ + $host = ''; + if (isset($_SERVER['HTTP_HOST']) && !empty($_SERVER['HTTP_HOST'])) { + $host = $_SERVER['HTTP_HOST']; + } else if (isset($_SERVER['SERVER_NAME']) && + !empty($_SERVER['SERVER_NAME'])) { + } - // Major is the same. Compare minor - if($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; - } + + $port = ''; + if (! strstr($host, ':')) { + if (isset($_SERVER['SERVER_PORT'])) { + if (($_SERVER['SERVER_PORT'] != 80 && $proto == 'http://') + || ($_SERVER['SERVER_PORT'] != 443 && $proto == 'https://')) { + $port = sprintf(':%d', $_SERVER['SERVER_PORT']); + } + } + } + + /* this is a workaround for the weird macosx caching that + causes Apache to return 16080 as the port number, which causes + SM to bail */ - return true; + if ($imap_server_type == 'macosx' && $port == ':16080') { + $port = ''; } - /* Returns a string showing the size of the message/attachment */ - function show_readable_size($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 . ' ' . $type . ''; - } + /* Fallback is to omit the server name and use a relative */ + /* URI, although this is not RFC 2616 compliant. */ + return ($host ? $proto . $host . $port . $path : $path); +} + + +/** + * These functions are used to encrypt the passowrd before it is + * stored in a cookie. + */ +function OneTimePadEncrypt ($string, $epad) { + $pad = base64_decode($epad); + $encrypted = ''; + for ($i = 0; $i < strlen ($string); $i++) { + $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i])); + } + + return base64_encode($encrypted); +} + +function OneTimePadDecrypt ($string, $epad) { + $pad = base64_decode($epad); + $encrypted = base64_decode ($string); + $decrypted = ''; + for ($i = 0; $i < strlen ($encrypted); $i++) { + $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i])); + } + + return $decrypted; +} + + +/** + * Randomize the mt_rand() function. Toss this in strings or integers + * and it will seed the generator appropriately. With strings, it is + * better to get them long. Use md5() to lengthen smaller strings. + */ +function sq_mt_seed($Val) { + /* if mt_getrandmax() does not return a 2^n - 1 number, + this might not work well. This uses $Max as a bitmask. */ + $Max = mt_getrandmax(); + + if (! is_int($Val)) { + $Val = crc32($Val); + } + + if ($Val < 0) { + $Val *= -1; + } + + if ($Val = 0) { + return; + } + + mt_srand(($Val ^ mt_rand(0, $Max)) & $Max); +} + + +/** + * This function initializes the random number generator fairly well. + * It also only initializes it once, so you don't accidentally get + * the same 'random' numbers twice in one session. + */ +function sq_mt_randomize() { + global $_SERVER; + static $randomized; + + if ($randomized) { + return; + } + + /* Global. */ + sq_mt_seed((int)((double) microtime() * 1000000)); + sq_mt_seed(md5($_SERVER['REMOTE_PORT'] . $_SERVER['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(isset($_SERVER['UNIQUE_ID'])) { + sq_mt_seed(md5($_SERVER['UNIQUE_ID'])); + } + + $randomized = 1; +} - /* 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($chars) < 1) - return ''; - - sq_mt_randomize(); // Initialize the random number generator +function OneTimePadCreate ($length=100) { + sq_mt_randomize(); - $String = ""; - while (strlen($String) < $size) { - $String .= $chars[mt_rand(0, strlen($chars))]; - } - - return $String; - } + $pad = ''; + for ($i = 0; $i < $length; $i++) { + $pad .= chr(mt_rand(0,255)); + } + + return base64_encode($pad); +} + +/** + * Duplicate function: obsoleted. Use check_php_version. + */ +function sqCheckPHPVersion($major, $minor, $release) { + + return check_php_version($major, $minor, $release); +} + +/** + * Returns a string showing the size of the message/attachment. + */ +function show_readable_size($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 . ''; +} + +/** + * 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 */ + + $String = ''; + $j = strlen( $chars ) - 1; + while (strlen($String) < $size) { + $String .= $chars{mt_rand(0, $j)}; + } + + return $String; +} + +function quoteIMAP($str) { + return ereg_replace('(["\\])', '\\\\1', $str); +} + +/** + * Trims every element in the array + */ +function TrimArray(&$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; + } +} + +/** + * Removes slashes from every element in the array + */ +function RemoveSlashes(&$array) { + foreach ($array as $k => $v) { + global $$k; + if (is_array($$k)) { + foreach ($$k as $k2 => $v2) { + $newArray[stripslashes($k2)] = stripslashes($v2); + } + $$k = $newArray; + } else { + $$k = stripslashes($v); + } + + /* Re-assign back to the array. */ + $array[$k] = $$k; + } +} + +$PHP_SELF = php_self(); ?>