d50a1edef4
move functions from text.php to Item class
706 lines
17 KiB
PHP
706 lines
17 KiB
PHP
<?php
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/**
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* @file include/text.php
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*/
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use Friendica\App;
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use Friendica\Content\ContactSelector;
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use Friendica\Content\Feature;
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use Friendica\Content\Smilies;
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use Friendica\Content\Text\BBCode;
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use Friendica\Core\Addon;
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use Friendica\Core\Config;
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use Friendica\Core\L10n;
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use Friendica\Core\PConfig;
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use Friendica\Core\Protocol;
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use Friendica\Core\System;
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use Friendica\Database\DBA;
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use Friendica\Model\Contact;
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use Friendica\Model\Event;
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use Friendica\Model\Item;
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use Friendica\Render\FriendicaSmarty;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Map;
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use Friendica\Util\Proxy as ProxyUtils;
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use Friendica\Core\Logger;
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use Friendica\Core\Renderer;
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use Friendica\Model\FileTag;
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use Friendica\Util\XML;
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use Friendica\Content\Text\HTML;
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require_once "include/conversation.php";
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/**
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* @brief Generates a pseudo-random string of hexadecimal characters
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*
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* @param int $size
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* @return string
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*/
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function random_string($size = 64)
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{
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$byte_size = ceil($size / 2);
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$bytes = random_bytes($byte_size);
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$return = substr(bin2hex($bytes), 0, $size);
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return $return;
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}
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/**
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* This is our primary input filter.
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*
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* The high bit hack only involved some old IE browser, forget which (IE5/Mac?)
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* that had an XSS attack vector due to stripping the high-bit on an 8-bit character
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* after cleansing, and angle chars with the high bit set could get through as markup.
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*
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* This is now disabled because it was interfering with some legitimate unicode sequences
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* and hopefully there aren't a lot of those browsers left.
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*
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* Use this on any text input where angle chars are not valid or permitted
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* They will be replaced with safer brackets. This may be filtered further
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* if these are not allowed either.
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*
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* @param string $string Input string
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* @return string Filtered string
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*/
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function notags($string) {
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return str_replace(["<", ">"], ['[', ']'], $string);
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// High-bit filter no longer used
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// return str_replace(array("<",">","\xBA","\xBC","\xBE"), array('[',']','','',''), $string);
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}
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/**
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* use this on "body" or "content" input where angle chars shouldn't be removed,
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* and allow them to be safely displayed.
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* @param string $string
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* @return string
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*/
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function escape_tags($string) {
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return htmlspecialchars($string, ENT_COMPAT, 'UTF-8', false);
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}
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/**
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* generate a string that's random, but usually pronounceable.
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* used to generate initial passwords
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* @param int $len
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* @return string
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*/
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function autoname($len) {
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if ($len <= 0) {
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return '';
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}
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$vowels = ['a','a','ai','au','e','e','e','ee','ea','i','ie','o','ou','u'];
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if (mt_rand(0, 5) == 4) {
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$vowels[] = 'y';
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}
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$cons = [
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'b','bl','br',
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'c','ch','cl','cr',
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'd','dr',
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'f','fl','fr',
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'g','gh','gl','gr',
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'h',
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'j',
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'k','kh','kl','kr',
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'l',
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'm',
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'n',
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'p','ph','pl','pr',
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'qu',
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'r','rh',
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's','sc','sh','sm','sp','st',
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't','th','tr',
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'v',
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'w','wh',
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'x',
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'z','zh'
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];
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$midcons = ['ck','ct','gn','ld','lf','lm','lt','mb','mm', 'mn','mp',
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'nd','ng','nk','nt','rn','rp','rt'];
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$noend = ['bl', 'br', 'cl','cr','dr','fl','fr','gl','gr',
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'kh', 'kl','kr','mn','pl','pr','rh','tr','qu','wh','q'];
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$start = mt_rand(0,2);
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if ($start == 0) {
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$table = $vowels;
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} else {
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$table = $cons;
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}
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$word = '';
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for ($x = 0; $x < $len; $x ++) {
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$r = mt_rand(0,count($table) - 1);
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$word .= $table[$r];
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if ($table == $vowels) {
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$table = array_merge($cons,$midcons);
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} else {
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$table = $vowels;
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}
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}
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$word = substr($word,0,$len);
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foreach ($noend as $noe) {
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$noelen = strlen($noe);
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if ((strlen($word) > $noelen) && (substr($word, -$noelen) == $noe)) {
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$word = autoname($len);
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break;
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}
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}
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return $word;
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}
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/**
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* Turn user/group ACLs stored as angle bracketed text into arrays
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*
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* @param string $s
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* @return array
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*/
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function expand_acl($s) {
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// turn string array of angle-bracketed elements into numeric array
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// e.g. "<1><2><3>" => array(1,2,3);
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$ret = [];
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if (strlen($s)) {
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$t = str_replace('<', '', $s);
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$a = explode('>', $t);
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foreach ($a as $aa) {
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if (intval($aa)) {
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$ret[] = intval($aa);
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}
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}
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}
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return $ret;
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}
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/**
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* Wrap ACL elements in angle brackets for storage
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* @param string $item
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*/
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function sanitise_acl(&$item) {
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if (intval($item)) {
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$item = '<' . intval(notags(trim($item))) . '>';
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} else {
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unset($item);
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}
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}
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/**
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* Convert an ACL array to a storable string
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*
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* Normally ACL permissions will be an array.
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* We'll also allow a comma-separated string.
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*
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* @param string|array $p
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* @return string
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*/
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function perms2str($p) {
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$ret = '';
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if (is_array($p)) {
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$tmp = $p;
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} else {
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$tmp = explode(',', $p);
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}
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if (is_array($tmp)) {
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array_walk($tmp, 'sanitise_acl');
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$ret = implode('', $tmp);
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}
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return $ret;
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}
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/**
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* for html,xml parsing - let's say you've got
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* an attribute foobar="class1 class2 class3"
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* and you want to find out if it contains 'class3'.
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* you can't use a normal sub string search because you
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* might match 'notclass3' and a regex to do the job is
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* possible but a bit complicated.
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* pass the attribute string as $attr and the attribute you
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* are looking for as $s - returns true if found, otherwise false
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*
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* @param string $attr attribute value
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* @param string $s string to search
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* @return boolean True if found, False otherwise
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*/
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function attribute_contains($attr, $s) {
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$a = explode(' ', $attr);
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return (count($a) && in_array($s,$a));
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}
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/**
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* Compare activity uri. Knows about activity namespace.
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*
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* @param string $haystack
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* @param string $needle
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* @return boolean
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*/
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function activity_match($haystack,$needle) {
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return (($haystack === $needle) || ((basename($needle) === $haystack) && strstr($needle, NAMESPACE_ACTIVITY_SCHEMA)));
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}
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/**
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* @brief Pull out all #hashtags and @person tags from $string.
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*
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* We also get @person@domain.com - which would make
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* the regex quite complicated as tags can also
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* end a sentence. So we'll run through our results
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* and strip the period from any tags which end with one.
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* Returns array of tags found, or empty array.
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*
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* @param string $string Post content
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* @return array List of tag and person names
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*/
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function get_tags($string) {
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$ret = [];
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// Convert hashtag links to hashtags
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$string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2', $string);
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// ignore anything in a code block
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$string = preg_replace('/\[code\](.*?)\[\/code\]/sm', '', $string);
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// Force line feeds at bbtags
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$string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
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// ignore anything in a bbtag
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$string = preg_replace('/\[(.*?)\]/sm', '', $string);
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// Match full names against @tags including the space between first and last
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// We will look these up afterward to see if they are full names or not recognisable.
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if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
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foreach ($matches[1] as $match) {
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if (strstr($match, ']')) {
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// we might be inside a bbcode color tag - leave it alone
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continue;
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}
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if (substr($match, -1, 1) === '.') {
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$ret[] = substr($match, 0, -1);
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} else {
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$ret[] = $match;
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}
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}
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}
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// Otherwise pull out single word tags. These can be @nickname, @first_last
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// and #hash tags.
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if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?]+)([ \x0D\x0A,;:?]|$)/', $string, $matches)) {
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foreach ($matches[1] as $match) {
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if (strstr($match, ']')) {
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// we might be inside a bbcode color tag - leave it alone
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continue;
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}
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if (substr($match, -1, 1) === '.') {
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$match = substr($match,0,-1);
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}
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// ignore strictly numeric tags like #1
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if ((strpos($match, '#') === 0) && ctype_digit(substr($match, 1))) {
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continue;
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}
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// try not to catch url fragments
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if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
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continue;
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}
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$ret[] = $match;
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}
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}
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return $ret;
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}
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/**
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* quick and dirty quoted_printable encoding
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*
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* @param string $s
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* @return string
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*/
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function qp($s) {
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return str_replace("%", "=", rawurlencode($s));
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}
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/**
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* @brief Check for a valid email string
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*
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* @param string $email_address
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* @return boolean
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*/
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function valid_email($email_address)
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{
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return preg_match('/^[_a-zA-Z0-9\-\+]+(\.[_a-zA-Z0-9\-\+]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$/', $email_address);
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}
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/**
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* Normalize url
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*
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* @param string $url
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* @return string
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*/
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function normalise_link($url) {
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$ret = str_replace(['https:', '//www.'], ['http:', '//'], $url);
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return rtrim($ret,'/');
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}
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/**
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* Compare two URLs to see if they are the same, but ignore
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* slight but hopefully insignificant differences such as if one
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* is https and the other isn't, or if one is www.something and
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* the other isn't - and also ignore case differences.
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*
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* @param string $a first url
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* @param string $b second url
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* @return boolean True if the URLs match, otherwise False
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*
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*/
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function link_compare($a, $b) {
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return (strcasecmp(normalise_link($a), normalise_link($b)) === 0);
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}
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/**
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* @brief Find any non-embedded images in private items and add redir links to them
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*
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* @param App $a
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* @param array &$item The field array of an item row
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*/
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function redir_private_images($a, &$item)
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{
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$matches = false;
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$cnt = preg_match_all('|\[img\](http[^\[]*?/photo/[a-fA-F0-9]+?(-[0-9]\.[\w]+?)?)\[\/img\]|', $item['body'], $matches, PREG_SET_ORDER);
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if ($cnt) {
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foreach ($matches as $mtch) {
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if (strpos($mtch[1], '/redir') !== false) {
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continue;
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}
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if ((local_user() == $item['uid']) && ($item['private'] == 1) && ($item['contact-id'] != $a->contact['id']) && ($item['network'] == Protocol::DFRN)) {
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$img_url = 'redir?f=1&quiet=1&url=' . urlencode($mtch[1]) . '&conurl=' . urlencode($item['author-link']);
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$item['body'] = str_replace($mtch[0], '[img]' . $img_url . '[/img]', $item['body']);
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}
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}
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}
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}
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/**
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* @brief Given a text string, convert from bbcode to html and add smilie icons.
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*
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* @param string $text String with bbcode.
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* @return string Formattet HTML.
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*/
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function prepare_text($text) {
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if (stristr($text, '[nosmile]')) {
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$s = BBCode::convert($text);
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} else {
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$s = Smilies::replace(BBCode::convert($text));
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}
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return trim($s);
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}
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/**
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* return array with details for categories and folders for an item
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*
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* @param array $item
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* @return array
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*
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* [
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* [ // categories array
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* {
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* 'name': 'category name',
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* 'removeurl': 'url to remove this category',
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* 'first': 'is the first in this array? true/false',
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* 'last': 'is the last in this array? true/false',
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* } ,
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* ....
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* ],
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* [ //folders array
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* {
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* 'name': 'folder name',
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* 'removeurl': 'url to remove this folder',
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* 'first': 'is the first in this array? true/false',
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* 'last': 'is the last in this array? true/false',
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* } ,
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* ....
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* ]
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* ]
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*/
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function get_cats_and_terms($item)
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{
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$categories = [];
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$folders = [];
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$matches = false;
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$first = true;
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$cnt = preg_match_all('/<(.*?)>/', $item['file'], $matches, PREG_SET_ORDER);
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if ($cnt) {
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foreach ($matches as $mtch) {
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$categories[] = [
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'name' => XML::escape(FileTag::decode($mtch[1])),
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'url' => "#",
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'removeurl' => ((local_user() == $item['uid'])?'filerm/' . $item['id'] . '?f=&cat=' . XML::escape(FileTag::decode($mtch[1])):""),
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'first' => $first,
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'last' => false
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];
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$first = false;
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}
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}
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if (count($categories)) {
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$categories[count($categories) - 1]['last'] = true;
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}
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if (local_user() == $item['uid']) {
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$matches = false;
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$first = true;
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$cnt = preg_match_all('/\[(.*?)\]/', $item['file'], $matches, PREG_SET_ORDER);
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if ($cnt) {
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foreach ($matches as $mtch) {
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$folders[] = [
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'name' => XML::escape(FileTag::decode($mtch[1])),
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'url' => "#",
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'removeurl' => ((local_user() == $item['uid']) ? 'filerm/' . $item['id'] . '?f=&term=' . XML::escape(FileTag::decode($mtch[1])) : ""),
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'first' => $first,
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'last' => false
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];
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$first = false;
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}
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}
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}
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if (count($folders)) {
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$folders[count($folders) - 1]['last'] = true;
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}
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return [$categories, $folders];
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}
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/**
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* get private link for item
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* @param array $item
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* @return boolean|array False if item has not plink, otherwise array('href'=>plink url, 'title'=>translated title)
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*/
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function get_plink($item) {
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$a = get_app();
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if ($a->user['nickname'] != "") {
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$ret = [
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//'href' => "display/" . $a->user['nickname'] . "/" . $item['id'],
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'href' => "display/" . $item['guid'],
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'orig' => "display/" . $item['guid'],
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'title' => L10n::t('View on separate page'),
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'orig_title' => L10n::t('view on separate page'),
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];
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if (x($item, 'plink')) {
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$ret["href"] = $a->removeBaseURL($item['plink']);
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$ret["title"] = L10n::t('link to source');
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}
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} elseif (x($item, 'plink') && ($item['private'] != 1)) {
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$ret = [
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'href' => $item['plink'],
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'orig' => $item['plink'],
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'title' => L10n::t('link to source'),
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];
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} else {
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$ret = [];
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}
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return $ret;
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}
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/**
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* return number of bytes in size (K, M, G)
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* @param string $size_str
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* @return number
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*/
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function return_bytes($size_str) {
|
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switch (substr ($size_str, -1)) {
|
|
case 'M': case 'm': return (int)$size_str * 1048576;
|
|
case 'K': case 'k': return (int)$size_str * 1024;
|
|
case 'G': case 'g': return (int)$size_str * 1073741824;
|
|
default: return $size_str;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $s
|
|
* @param boolean $strip_padding
|
|
* @return string
|
|
*/
|
|
function base64url_encode($s, $strip_padding = false) {
|
|
|
|
$s = strtr(base64_encode($s), '+/', '-_');
|
|
|
|
if ($strip_padding) {
|
|
$s = str_replace('=','',$s);
|
|
}
|
|
|
|
return $s;
|
|
}
|
|
|
|
/**
|
|
* @param string $s
|
|
* @return string
|
|
*/
|
|
function base64url_decode($s) {
|
|
|
|
if (is_array($s)) {
|
|
Logger::log('base64url_decode: illegal input: ' . print_r(debug_backtrace(), true));
|
|
return $s;
|
|
}
|
|
|
|
/*
|
|
* // Placeholder for new rev of salmon which strips base64 padding.
|
|
* // PHP base64_decode handles the un-padded input without requiring this step
|
|
* // Uncomment if you find you need it.
|
|
*
|
|
* $l = strlen($s);
|
|
* if (!strpos($s,'=')) {
|
|
* $m = $l % 4;
|
|
* if ($m == 2)
|
|
* $s .= '==';
|
|
* if ($m == 3)
|
|
* $s .= '=';
|
|
* }
|
|
*
|
|
*/
|
|
|
|
return base64_decode(strtr($s,'-_','+/'));
|
|
}
|
|
|
|
|
|
function bb_translate_video($s) {
|
|
|
|
$matches = null;
|
|
$r = preg_match_all("/\[video\](.*?)\[\/video\]/ism",$s,$matches,PREG_SET_ORDER);
|
|
if ($r) {
|
|
foreach ($matches as $mtch) {
|
|
if ((stristr($mtch[1], 'youtube')) || (stristr($mtch[1], 'youtu.be'))) {
|
|
$s = str_replace($mtch[0], '[youtube]' . $mtch[1] . '[/youtube]', $s);
|
|
} elseif (stristr($mtch[1], 'vimeo')) {
|
|
$s = str_replace($mtch[0], '[vimeo]' . $mtch[1] . '[/vimeo]', $s);
|
|
}
|
|
}
|
|
}
|
|
return $s;
|
|
}
|
|
|
|
function normalise_openid($s) {
|
|
return trim(str_replace(['http://', 'https://'], ['', ''], $s), '/');
|
|
}
|
|
|
|
|
|
function undo_post_tagging($s) {
|
|
$matches = null;
|
|
$cnt = preg_match_all('/([!#@])\[url=(.*?)\](.*?)\[\/url\]/ism', $s, $matches, PREG_SET_ORDER);
|
|
if ($cnt) {
|
|
foreach ($matches as $mtch) {
|
|
if (in_array($mtch[1], ['!', '@'])) {
|
|
$contact = Contact::getDetailsByURL($mtch[2]);
|
|
$mtch[3] = empty($contact['addr']) ? $mtch[2] : $contact['addr'];
|
|
}
|
|
$s = str_replace($mtch[0], $mtch[1] . $mtch[3],$s);
|
|
}
|
|
}
|
|
return $s;
|
|
}
|
|
|
|
function protect_sprintf($s) {
|
|
return str_replace('%', '%%', $s);
|
|
}
|
|
|
|
/// @TODO Rewrite this
|
|
function is_a_date_arg($s) {
|
|
$i = intval($s);
|
|
|
|
if ($i > 1900) {
|
|
$y = date('Y');
|
|
|
|
if ($i <= $y + 1 && strpos($s, '-') == 4) {
|
|
$m = intval(substr($s, 5));
|
|
|
|
if ($m > 0 && $m <= 12) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* remove intentation from a text
|
|
*/
|
|
function deindent($text, $chr = "[\t ]", $count = NULL) {
|
|
$lines = explode("\n", $text);
|
|
|
|
if (is_null($count)) {
|
|
$m = [];
|
|
$k = 0;
|
|
while ($k < count($lines) && strlen($lines[$k]) == 0) {
|
|
$k++;
|
|
}
|
|
preg_match("|^" . $chr . "*|", $lines[$k], $m);
|
|
$count = strlen($m[0]);
|
|
}
|
|
|
|
for ($k = 0; $k < count($lines); $k++) {
|
|
$lines[$k] = preg_replace("|^" . $chr . "{" . $count . "}|", "", $lines[$k]);
|
|
}
|
|
|
|
return implode("\n", $lines);
|
|
}
|
|
|
|
function formatBytes($bytes, $precision = 2) {
|
|
$units = ['B', 'KB', 'MB', 'GB', 'TB'];
|
|
|
|
$bytes = max($bytes, 0);
|
|
$pow = floor(($bytes ? log($bytes) : 0) / log(1024));
|
|
$pow = min($pow, count($units) - 1);
|
|
|
|
$bytes /= pow(1024, $pow);
|
|
|
|
return round($bytes, $precision) . ' ' . $units[$pow];
|
|
}
|
|
|
|
/**
|
|
* @brief translate and format the networkname of a contact
|
|
*
|
|
* @param string $network
|
|
* Networkname of the contact (e.g. dfrn, rss and so on)
|
|
* @param sting $url
|
|
* The contact url
|
|
* @return string
|
|
*/
|
|
function format_network_name($network, $url = 0) {
|
|
if ($network != "") {
|
|
if ($url != "") {
|
|
$network_name = '<a href="'.$url.'">'.ContactSelector::networkToName($network, $url)."</a>";
|
|
} else {
|
|
$network_name = ContactSelector::networkToName($network);
|
|
}
|
|
|
|
return $network_name;
|
|
}
|
|
}
|