-<?
- //*************************************************************************
- // 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;
- }
+<?php
- //*************************************************************************
- // Read from the back of $haystack until $needle is found, or the begining
- // of the $haystack is reached.
- //*************************************************************************
- function readShortMailboxName($haystack, $needle) {
- $len = strlen($haystack);
- for ($i = $len - 1; ($i >= 0) && (!$found);$i--) {
- $char = $haystack[$i];
- if ($char == $needle)
- $found = 1;
- else
- $data .= $char;
- }
- return strrev($data);
- }
+/**
+ * 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.
+ *
+ * $Id$
+ */
+
+require_once(SM_PATH . 'functions/global.php');
+
+/**
+ * SquirrelMail version number -- DO NOT CHANGE
+ */
+global $version;
+$version = '1.4.0 [CVS-DEVEL]';
+
+/**
+ * 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]))
+ $line_len += strlen($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)) {
+ $line .= "\n";
+ }
+ }
+}
+
+/**
+ * Does the opposite of sqWordWrap()
+ */
+function sqUnWordWrap(&$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 = 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 php_self () {
+ if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) {
+ return $req_uri;
+ }
+
+ if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) {
+ return $php_self;
+ }
+
+ 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 $imap_server_type;
+
+ /* Get the path, handle virtual directories */
+ $path = substr(php_self(), 0, strrpos(php_self(), '/'));
+
+ if ( sqgetGlobalVar('sq_base_url', $full_url, SQ_SESSION) ) {
+ return $full_url . $path;
+ }
- // Wraps text at $wrap_max characters
- function wordWrap($line) {
- $newline = $line;
- $lastpart = $line;
- $numlines = 0;
- $wrap_max = 80;
- while (strlen($lastpart) > $wrap_max) {
- $pos = $wrap_max;
- while ((substr($line, $pos, $pos+1) != " ") && ($pos > 0)) {
- $pos--;
- }
- $before = substr($line, 0, $pos);
- $lastpart = substr($line, $pos+1, strlen($line));
- $newline = $before . "<BR>" . $lastpart;
- $numlines++;
+ /* 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 $newline;
+ }
+
+ $port = '';
+ if (! strstr($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 . $path;
+}
+
+
+/**
+ * These functions are used to encrypt the passowrd before it is
+ * stored in a cookie.
+ */
+function OneTimePadEncrypt ($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() {
+ 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));
+ }
+
+ $randomized = 1;
+}
+
+function OneTimePadCreate ($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.
+ */
+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>';
+}
+
+/**
+ * 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();
+
?>