X-Git-Url: https://vcs.fsf.org/?p=squirrelmail.git;a=blobdiff_plain;f=functions%2Fstrings.php;h=3e5c9db2c32715842b92ffabcee710b58095f807;hp=9a4bb5c0cf943d0c6cf8e0d6c5c5971693ee2b4d;hb=4022e8fe81d0d357eff13c9993971ce62ce981f6;hpb=a37f3771b11544a29ebd521a69599381c90e7df2 diff --git a/functions/strings.php b/functions/strings.php index 9a4bb5c0..3e5c9db2 100644 --- a/functions/strings.php +++ b/functions/strings.php @@ -1,214 +1,608 @@ = strlen($haystack)) - return -1; - $pos++; - } - return $pos; - } - - // Wraps text at $wrap characters - function wordWrap($passed, $wrap) { - $passed = str_replace(">", ">", $passed); - $passed = str_replace("<", "<", $passed); - - $words = explode(" ", trim($passed)); - $i = 0; - $line_len = strlen($words[$i])+1; - $line = ""; - if (count($words) > 1) { - while ($i < count($words)-1) { - while ($line_len < $wrap) { - $line = "$line$words[$i] "; - $i++; - $line_len = $line_len + strlen($words[$i])+1; - } - $line_len = strlen($words[$i])+1; - if ($line_len < $wrap) { - if ($i < count($words)) // don't
the last line - $line = "$line\n"; +/** + * strings.php + * + * Copyright (c) 1999-2002 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. + * + * $Id$ + */ + +/*****************************************************************/ +/*** THIS FILE NEEDS TO HAVE ITS FORMATTING FIXED!!! ***/ +/*** PLEASE DO SO AND REMOVE THIS COMMENT SECTION. ***/ +/*** + Base level indent should begin at left margin, as ***/ +/*** the comment and $version stuff below. ***/ +/*** + All identation should consist of four space blocks ***/ +/*** + Tab characters are evil. ***/ +/*** + all comments should use "slash-star ... star-slash" ***/ +/*** style -- no pound characters, no slash-slash style ***/ +/*** + FLOW CONTROL STATEMENTS (if, while, etc) SHOULD ***/ +/*** ALWAYS USE { AND } CHARACTERS!!! ***/ +/*** + Please use ' instead of ", when possible. Note " ***/ +/*** should always be used in _( ) function calls. ***/ +/*** Thank you for your help making the SM code more readable. ***/ +/*****************************************************************/ + +/** + * SquirrelMail version number -- DO NOT CHANGE + */ +global $version; +$version = '1.2.4 [cvs]'; + +/** + * 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 == '') { + return $haystack; + } + $parts = explode($needle, $haystack); + $elem = array_pop($parts); + while ($elem == '' && count($parts)) { + $elem = array_pop($parts); + } + return $elem; +} + +/** + * If $haystack is a full mailbox name, and $needle is the mailbox + * separator character, returns the second last part of the full + * mailbox name (i.e. the mailbox's parent mailbox) + */ +function readMailboxParent($haystack, $needle) { + if ($needle == '') return ''; + $parts = explode($needle, $haystack); + $elem = array_pop($parts); + while ($elem == '' && count($parts)) { + $elem = array_pop($parts); + } + return join($needle, $parts); +} + +/** + * Returns the index of the first chunk of string $haystack that + * starts with non-white-space character, starting at position $pos. + * If there is no such chunk, returns -1. + */ +function next_pos_minus_white ($haystack, $pos) { + $len = strlen($haystack); + while ($pos < $len) { + /* Get the next character. */ + $c = substr($haystack, $pos, 1); + + /* Check the next character. */ + if (($c != ' ') && ($c != "\t") && ($c != "\n") && ($c != "\r")) { + return $pos; + } + + /* Increment position in string. */ + ++$pos; + } + return -1; +} + +/** + * 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])) + $line_len += strlen($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)) { + $i ++; + } + + // Go to the next line if we have more to process + if ($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)) { + $to_line = implode(', ', $array); + $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 $color; // color theme + + require_once('../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 { - $endline = $words[$i]; - while ($line_len >= $wrap) { - $bigline = substr($endline, 0, $wrap); - $endline = substr($endline, $wrap, strlen($endline)); - $line_len = strlen($endline); - $line = "$line$bigline
"; - } - $line = "$line$endline
"; - $i++; + break; + } + } + + if ($Quotes > 1) { + if (! isset($color[14])) { + $color[14] = '#FF0000'; + } + $line = '' . $line . ''; + } elseif ($Quotes) { + if (! isset($color[13])) { + $color[13] = '#800000'; + } + $line = '' . $line . ''; + } + + $body_ary[$i] = $line; + } + $body = '
' . implode("\n", $body_ary) . '
'; +} + +function find_mailbox_name ($mailbox) { + if (ereg(" *\"([^\r\n\"]*)\"[ \r\n]*$", $mailbox, $regs)) + return $regs[1]; + ereg(" *([^ \r\n\"]*)[ \r\n]*$",$mailbox,$regs); + return $regs[1]; + +} + +function php_self () { + global $PHP_SELF, $HTTP_SERVER_VARS; + + if (isset($PHP_SELF) && !empty($PHP_SELF)) { + return $PHP_SELF; + } else if (isset($HTTP_SERVER_VARS['PHP_SELF']) && + !empty($HTTP_SERVER_VARS['PHP_SELF'])) { + return $HTTP_SERVER_VARS['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 $PHP_SELF, $SERVER_NAME, $HTTP_HOST, $SERVER_PORT, + $HTTP_SERVER_VARS; + + /* Get the path. */ + $path = substr($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 in your HTTP_SERVER_VARS + * OR if you are on port 443 + */ + $getEnvVar = getenv('HTTPS'); + if ((isset($getEnvVar) && !strcasecmp($getEnvVar, 'on')) || + (isset($HTTP_SERVER_VARS['HTTPS'])) || + (isset($HTTP_SERVER_VARS['SERVER_PORT']) && + $HTTP_SERVER_VARS['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 = $SERVER_NAME; + } else if (isset($HTTP_SERVER_VARS['SERVER_NAME']) && + !empty($HTTP_SERVER_VARS['SERVER_NAME'])) { + $host = $HTTP_SERVER_VARS['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); } - } - } else { - $line = $words[0]; - } - - $line = str_replace(">", ">", $line); - $line = str_replace("<", "<", $line); - return $line; - } - - /** Returns an array of email addresses **/ - function parseAddrs($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 $array; - } - - /** Returns a line of comma separated email addresses from an array **/ - function getLineOfAddrs($array) { - if (is_array($array)) { - $to_line = implode(", ", $array); - $to_line = trim(ereg_replace(",,+", ",", $to_line)); - } else { - $to_line = ""; - } - return $to_line; - } - - function translateText($body, $wrap_at, $charset) { - global $where, $what; // from searching - - if (!isset($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]; - $line = charset_decode($charset, $line); - - if (strlen($line) - 2 >= $wrap_at) { - $line = wordWrap($line, $wrap_at); - } - - $line = str_replace(" ", " ", $line); - $line = str_replace("\t", "        ", $line); - $line = nl2br($line); - - $line = parseEmail ($line); - $line = parseUrl ($line); - - $line = "^^$line"; // gotta do this because if not, strpos() returns 0 - // which in PHP is the same as false. Now it returns 2 - if (strpos(trim(str_replace(" ", "", $line)), ">>") == 2) { - $line = substr($line, 2); - $line = "$line\n"; - } else if (strpos(trim(str_replace(" ", "", $line)), ">") == 2) { - $line = substr($line, 2); - $line = "$line\n"; - } else { - $line = substr($line, 2); - } - - $body_ary[$i] = "$line
"; - } - $body = implode("\n", $body_ary); - - return $body; - } - - /* SquirrelMail version number -- DO NOT CHANGE */ - $version = "0.5pre1"; - - - function find_mailbox_name ($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 $box; - } - - function replace_spaces ($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; - - // 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' ) { - $proto = "https://"; - } - - // Get the hostname from the Host header or server config. - // Fallback is to omit the server name and use a relative URI, - // although this is not RFC 2616 compliant. - if(isset($HTTP_HOST) && !empty($HTTP_HOST)) { - $location = $proto . $HTTP_HOST . $path; - } else if(isset($SERVER_NAME) && !empty($SERVER_NAME)) { - $location = $proto . $SERVER_NAME . $path; - } else { - $location = $path; - } - return $location; - } + } + } + + /* Fallback is to omit the server name and use a relative */ + /* URI, although this is not RFC 2616 compliant. */ + return ($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)) { + 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')) { + // 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)); + } + } + + // Apache-specific + sq_mt_seed(md5($UNIQUE_ID)); + + $randomized = 1; +} + +function OneTimePadCreate ($length=100) { + sq_mt_randomize(); + + $pad = ''; + for ($i = 0; $i < $length; $i++) { + $pad .= chr(mt_rand(0,255)); + } + + return base64_encode($pad); +} + +/** + * Check if we have a required PHP-version. Return TRUE if we do, + * or FALSE if we don't. + * + * To check for 4.0.1, use sqCheckPHPVersion(4,0,1) + * To check for 4.0b3, use sqCheckPHPVersion(4,0,-3) + * + * Does not handle betas like 4.0.1b1 or development versions + */ +function sqCheckPHPVersion($major, $minor, $release) { + + $ver = phpversion(); + eregi('^([0-9]+)\\.([0-9]+)(.*)', $ver, $regs); + + /* Parse the version string. */ + $vmajor = strval($regs[1]); + $vminor = strval($regs[2]); + $vrel = $regs[3]; + if($vrel[0] == ".") { + $vrel = strval(substr($vrel, 1)); + } + if($vrel[0] == 'b' || $vrel[0] == 'B') { + $vrel = - strval(substr($vrel, 1)); + } + if($vrel[0] == 'r' || $vrel[0] == 'R') { + $vrel = - strval(substr($vrel, 2))/10; + } + + /* Compare major version. */ + if ($vmajor < $major) { return false; } + if ($vmajor > $major) { return true; } + + /* Major is the same. Compare minor. */ + if ($vminor < $minor) { return false; } + if ($vminor > $minor) { return true; } + + /* Major and minor is the same as the required one. Compare release */ + if ($vrel >= 0 && $release >= 0) { // Neither are beta + if($vrel < $release) return false; + } else if($vrel >= 0 && $release < 0) { // This is not beta, required is beta + return true; + } else if($vrel < 0 && $release >= 0){ // This is beta, require not beta + return false; + } else { // Both are beta + if($vrel > $release) return false; + } + + return true; +} + +/** + * Returns a string showing the size of the message/attachment. + */ +function show_readable_size($bytes) { + $bytes /= 1024; + $type = 'k'; + + if ($bytes / 1024 > 1) { + $bytes /= 1024; + $type = 'm'; + } + + if ($bytes < 10) { + $bytes *= 10; + settype($bytes, 'integer'); + $bytes /= 10; + } else { + settype($bytes, 'integer'); + } + + return $bytes . ' ' . $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 + + $String = ""; + while (strlen($String) < $size) { + $String .= $chars[mt_rand(0, strlen($chars))]; + } + + 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(); + ?>