/**
* Fetch the valid tags from a list. Filters are length, censorship, perms (if desired).
*
* @param array Array of existing thread info (including the existing tags)
* @param string|array List of tags to add (comma delimited, or an array as is). If array, ensure there are no commas.
* @param array (output) List of errors that happens
* @param boolean Whether to check the browsing user's create tag perms
* @param boolean Whether to expand the error phrase
*
* @return array List of valid tags
*/
function fetch_valid_tags($threadinfo, $taglist, &$errors, $check_browser_perms = true, $evalerrors = true)
{
global $vbulletin;
static $tagbadwords, $taggoodwords;
$errors = array();
if (!is_array($taglist)) {
$taglist = split_tag_list($taglist);
}
if (!trim($threadinfo['taglist'])) {
$existing_tags = array();
} else {
// this will always be delimited by a comma
$existing_tags = explode(',', trim($threadinfo['taglist']));
}
if ($vbulletin->options['tagmaxthread'] and count($existing_tags) >= $vbulletin->options['tagmaxthread']) {
$errors['threadmax'] = $evalerrors ? fetch_error('thread_has_max_allowed_tags') : 'thread_has_max_allowed_tags';
return array();
}
if ($vbulletin->options['tagmaxlen'] <= 0 or $vbulletin->options['tagmaxlen'] >= 100) {
$vbulletin->options['tagmaxlen'] = 100;
}
$valid_raw = array();
// stop words: too common
require DIR . '/includes/searchwords.php';
// get the stop word list; allow multiple requires
// filter the stop words by adding custom stop words (tagbadwords) and allowing through exceptions (taggoodwords)
if (!is_array($tagbadwords)) {
$tagbadwords = preg_split('/\\s+/s', vbstrtolower($vbulletin->options['tagbadwords']), -1, PREG_SPLIT_NO_EMPTY);
}
if (!is_array($taggoodwords)) {
$taggoodwords = preg_split('/\\s+/s', vbstrtolower($vbulletin->options['taggoodwords']), -1, PREG_SPLIT_NO_EMPTY);
}
// merge hard-coded badwords and tag-specific badwords
$badwords = array_merge($badwords, $tagbadwords);
foreach ($taglist as $tagtext) {
$tagtext = trim(preg_replace('#[ \\r\\n\\t]+#', ' ', $tagtext));
if ($tagtext === '') {
continue;
}
if (!in_array(vbstrtolower($tagtext), $taggoodwords)) {
$char_strlen = vbstrlen($tagtext, true);
if ($vbulletin->options['tagminlen'] and $char_strlen < $vbulletin->options['tagminlen']) {
$errors['min_length'] = $evalerrors ? fetch_error('tag_too_short_min_x', $vbulletin->options['tagminlen']) : array('tag_too_short_min_x', $vbulletin->options['tagminlen']);
continue;
}
if ($char_strlen > $vbulletin->options['tagmaxlen']) {
$errors['max_length'] = $evalerrors ? fetch_error('tag_too_long_max_x', $vbulletin->options['tagmaxlen']) : array('tag_too_long_max_x', $vbulletin->options['tagmaxlen']);
continue;
}
if (strlen($tagtext) > 100) {
// only have 100 bytes to store a tag
$errors['max_length'] = $evalerrors ? fetch_error('tag_too_long_max_x', $vbulletin->options['tagmaxlen']) : array('tag_too_long_max_x', $vbulletin->options['tagmaxlen']);
continue;
}
$censored = fetch_censored_text($tagtext);
if ($censored != $tagtext) {
// can't have tags with censored text
$errors['censor'] = $evalerrors ? fetch_error('tag_no_censored') : 'tag_no_censored';
continue;
}
if (count(split_tag_list($tagtext)) > 1) {
// contains a delimiter character
$errors['comma'] = $evalerrors ? fetch_error('tag_no_comma') : 'tag_no_comma';
continue;
}
if (in_array(strtolower($tagtext), $badwords)) {
$errors['common'] = $evalerrors ? fetch_error('tag_x_not_be_common_words', $tagtext) : array('tag_x_not_be_common_words', $tagtext);
continue;
}
}
$valid_raw[] = $vbulletin->options['tagforcelower'] ? vbstrtolower($tagtext) : $tagtext;
}
// we need to essentially do a case-insensitive array_unique here
$valid_unique = array_unique(array_map('vbstrtolower', $valid_raw));
$valid = array();
foreach (array_keys($valid_unique) as $key) {
$valid[] = $valid_raw["{$key}"];
}
$valid_unique = array_values($valid_unique);
// make the keys jive with $valid
if ($valid) {
$existing_sql = $vbulletin->db->query_read("\n\t\t\tSELECT tag.tagtext, IF(tagthread.tagid IS NULL, 0, 1) AS taginthread\n\t\t\tFROM " . TABLE_PREFIX . "tag AS tag\n\t\t\tLEFT JOIN " . TABLE_PREFIX . "tagthread AS tagthread ON\n\t\t\t\t(tag.tagid = tagthread.tagid AND tagthread.threadid = " . intval($threadinfo['threadid']) . ")\n\t\t\tWHERE tag.tagtext IN ('" . implode("','", array_map(array(&$vbulletin->db, 'escape_string'), $valid)) . "')\n\t\t");
if ($check_browser_perms and !($vbulletin->userinfo['permissions']['genericpermissions'] & $vbulletin->bf_ugp_genericpermissions['cancreatetag'])) {
// can't create tags, need to throw errors about bad ones
$new_tags = array_flip($valid_unique);
while ($tag = $vbulletin->db->fetch_array($existing_sql)) {
unset($new_tags[vbstrtolower($tag['tagtext'])]);
}
if ($new_tags) {
// trying to create tags without permissions. Remove and throw an error
$errors['no_create'] = $evalerrors ? fetch_error('tag_no_create') : 'tag_no_create';
foreach ($new_tags as $new_tag => $key) {
// remove those that we can't add from the list
unset($valid["{$key}"], $valid_unique["{$key}"]);
}
}
}
$vbulletin->db->data_seek($existing_sql, 0);
// determine which tags are already in the thread and just ignore them
while ($tag = $vbulletin->db->fetch_array($existing_sql)) {
if ($tag['taginthread']) {
// tag is in thread, find it and remove
if (($key = array_search(vbstrtolower($tag['tagtext']), $valid_unique)) !== false) {
unset($valid["{$key}"], $valid_unique["{$key}"]);
}
}
}
$user_tags_remain = null;
if ($vbulletin->options['tagmaxthread']) {
// check global limit
$user_tags_remain = $vbulletin->options['tagmaxthread'] - count($existing_tags) - count($valid);
}
if (!can_moderate($threadinfo['forumid'], 'caneditthreads')) {
$my_tag_count_array = $vbulletin->db->query_first("\n\t\t\t\tSELECT COUNT(*) AS count\n\t\t\t\tFROM " . TABLE_PREFIX . "tagthread\n\t\t\t\tWHERE threadid = " . intval($threadinfo['threadid']) . "\n\t\t\t\t\tAND userid = " . $vbulletin->userinfo['userid']);
$my_tag_count = $my_tag_count_array['count'] + count($valid);
$tags_remain = null;
if ($vbulletin->options['tagmaxstarter'] and $threadinfo['postuserid'] == $vbulletin->userinfo['userid']) {
$tags_remain = $vbulletin->options['tagmaxstarter'] - $my_tag_count;
} else {
if ($vbulletin->options['tagmaxuser']) {
$tags_remain = $vbulletin->options['tagmaxuser'] - $my_tag_count;
}
}
if ($tags_remain !== null) {
$user_tags_remain = $user_tags_remain == null ? $tags_remain : min($tags_remain, $user_tags_remain);
}
}
if ($user_tags_remain < 0) {
$errors['threadmax'] = $evalerrors ? fetch_error('number_tags_add_exceeded_x', vb_number_format($user_tags_remain * -1)) : array('number_tags_add_exceeded_x', vb_number_format($user_tags_remain * -1));
$allowed_tag_count = count($valid) + $user_tags_remain;
if ($allowed_tag_count > 0) {
$valid = array_slice($valid, 0, count($valid) + $user_tags_remain);
} else {
$valid = array();
}
}
}
return $valid;
}
function BuildSubmittedTags($taglist)
{
global $vbulletin;
if (function_exists(split_tag_list)) {
$taglist = split_tag_list($taglist);
} else {
$taglist = split(',', $taglist);
}
return $taglist;
}
