+ /* 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 . $path;
+}
+
+
+/**
+ * Encrypts password
+ *
+ * These functions are used to encrypt the password before it is
+ * stored in a cookie. The encryption key is generated by
+ * OneTimePadCreate();
+ *
+ * @param string string the (password)string to encrypt
+ * @param string epad the encryption key
+ * @return string the base64-encoded encrypted password
+ */
+function OneTimePadEncrypt ($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);
+}
+
+/**
+ * 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
+ */
+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 $decrypted;
+}
+
+
+/**
+ * Randomizes the mt_rand() function.
+ *
+ * Toss this in strings or integers and it will seed the generator
+ * appropriately. With strings, it is better to get them long.
+ * Use md5() to lengthen smaller strings.
+ *
+ * @param mixed val a value to seed the random number generator
+ * @return void
+ */
+function sq_mt_seed($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
+ */
+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));
+ }
+
+ $randomized = 1;
+}
+
+/**
+ * Creates encryption key
+ *
+ * Creates an encryption key for encrypting the password stored in the cookie.
+ * The encryption key itself is stored in the session.
+ *
+ * @param int length optional, length of the string to generate
+ * @return string the encryption key
+ */
+function OneTimePadCreate ($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
+ */
+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
+ *
+ * @param int size the size 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 $chars
+ * @return string the random string
+ */
+function GenerateRandomString($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 $String;
+}
+
+/**
+ * Escapes special characters for use in IMAP commands.
+ *
+ * @param string the string to escape
+ * @return string the escaped string
+ */
+function quoteimap($str) {
+ return preg_replace("/([\"\\\\])/", "\\\\$1", $str);
+}
+
+/**
+ * Trims array
+ *
+ * Trims every element in the array, ie. remove the first char of each element
+ * @param array array the array to trim
+ */
+function TrimArray(&$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"
+ * @return string a link to the compose page
+ */
+function makeComposeLink($url, $text = null, $target='')
+{
+ global $compose_new_win,$javascript_on;
+
+ 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', $base_uri, SQ_SESSION);
+ return '<a href="javascript:void(0)" onclick="comp_in_new(\''.$base_uri.$url.'\')">'. $text.'</a>';
+ }
+
+
+ // otherwise, just open new window using regular HTML
+ return makeInternalLink($url, $text, '_blank');
+
+}
+
+/**
+ * Print variable
+ *
+ * sm_print_r($some_variable, [$some_other_variable [, ...]]);
+ *
+ * Debugging function - does the same as print_r, but makes sure special
+ * characters are converted to htmlentities first. This will allow
+ * values like <some@email.address> to be displayed.
+ * The output is wrapped in <<pre>> and <</pre>> tags.
+ *
+ * @return void
+ */
+function sm_print_r() {
+ ob_start(); // Buffer output
+ foreach(func_get_args() as $var) {
+ print_r($var);
+ echo "\n";
+ }
+ $buffer = ob_get_contents(); // Grab the print_r output
+ ob_end_clean(); // Silently discard the output & stop buffering
+ print '<pre>';
+ print htmlentities($buffer);
+ print '</pre>';
+}
+
+/**
+ * version of fwrite which checks for failure
+ */
+function sq_fwrite($fp, $string) {
+ // write to file
+ $count = @fwrite($fp,$string);
+ // the number of bytes written should be the length of the string
+ if($count != strlen($string)) {
+ return FALSE;
+ }
+
+ return $count;
+}
+
+/**
+ * sq_get_html_translation_table
+ *
+ * Returns the translation table used by sq_htmlentities()
+ *
+ * @param integer $table html translation table. Possible values (without quotes):
+ * <ul>
+ * <li>HTML_ENTITIES - full html entities table defined by charset</li>
+ * <li>HTML_SPECIALCHARS - html special characters table</li>
+ * </ul>
+ * @param integer $quote_style quote encoding style. Possible values (without quotes):
+ * <ul>
+ * <li>ENT_COMPAT - (default) encode double quotes</li>
+ * <li>ENT_NOQUOTES - don't encode double or single quotes</li>
+ * <li>ENT_QUOTES - encode double and single quotes</li>
+ * </ul>
+ * @param string $charset charset used for encoding. default to us-ascii, 'auto' uses $default_charset global value.
+ * @return array html translation array
+ */
+function sq_get_html_translation_table($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
+ *
+ * @param string $string string that has to be sanitized
+ * @param integer $quote_style quote encoding style. Possible values (without quotes):
+ * <ul>
+ * <li>ENT_COMPAT - (default) encode double quotes</li>
+ * <li>ENT_NOQUOTES - don't encode double or single quotes</li>
+ * <li>ENT_QUOTES - encode double and single quotes</li>
+ * </ul>
+ * @param string $charset charset used for encoding. defaults to 'us-ascii', 'auto' uses $default_charset global value.
+ * @return string sanitized string
+ */
+function sq_htmlentities($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);
+}
+
+$PHP_SELF = php_self();
+?>
\ No newline at end of file