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294 daniel-mar 1 
<?php
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/*
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 * OIDplus 2.0
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 * Copyright 2020 Daniel Marschall, ViaThinkSoft
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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360 daniel-mar 20 
define('SPACER_PNG', base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII='));
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if (!isset($_REQUEST['file'])) {
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        header('Content-Type:image/png');
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        die(SPACER_PNG);
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} else {
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        $file = $_REQUEST['file'];
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}
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if (!isset($_REQUEST['mode'])) {
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        header('Content-Type:image/png');
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        die(SPACER_PNG);
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} else {
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        $mode = $_REQUEST['mode'];
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}
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if (!isset($_REQUEST['lang'])) {
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        $lang = 'enus';
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} else {
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        $lang = $_REQUEST['lang'];
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}
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$candidate1 = __DIR__ . '/../../../userdata/resources/' . $file;
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$candidate2 = __DIR__ . '/../../../res/' . $file;
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if (file_exists($candidate1) || is_dir($candidate1)) {
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        // It is a file inside userdata/ (or it is overwritten by userdata)
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        $file = $candidate1;
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} else {
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        // It is a file in res/
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        $file = $candidate2;
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}
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if (($mode == 'treeicon_folder') || ($mode == 'treeicon_leaf_url') || ($mode == 'treeicon_leaf_doc')) {
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        if (file_exists($icon_candidate = getIconCandidate($file, 'png', 'tree', $lang))) {
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                header('Content-Type:image/png');
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                die(file_get_contents($icon_candidate));
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        } else if (file_exists($icon_candidate = getIconCandidate($file, 'png', 'tree', ''))) {
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                header('Content-Type:image/png');
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                die(file_get_contents($icon_candidate));
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        } else if (file_exists($icon_candidate = __DIR__.'/'.$mode.'.png')) { // default icon for mode
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                header('Content-Type:image/png');
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                die(file_get_contents($icon_candidate));
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        } else {
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                header('Content-Type:image/png');
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                die(SPACER_PNG); // should not happen
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        }
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} else if (($mode == 'icon_leaf_url_big') || ($mode == 'icon_leaf_doc_big') || ($mode == 'icon_folder_big')) {
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        if (file_exists($icon_candidate = getIconCandidate($file, 'png', 'big', $lang))) {
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                header('Content-Type:image/png');
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                die(file_get_contents($icon_candidate));
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        } else if (file_exists($icon_candidate = getIconCandidate($file, 'png', 'big', ''))) {
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                header('Content-Type:image/png');
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                die(file_get_contents($icon_candidate));
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        } else if (file_exists($icon_candidate = __DIR__.'/'.$mode.'.png')) { // default icon for mode
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                header('Content-Type:image/png');
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                die(file_get_contents($icon_candidate));
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        } else {
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                header('Content-Type:image/png');
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                die(SPACER_PNG); // should not happen
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        }
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} else {
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        // Invalid $mode value
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        header('Content-Type:image/png');
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        die(SPACER_PNG); // should not happen
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}
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# ---
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function getIconCandidate($file, $picFormat, $treeOrBig, $lang) {
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        $cnt = 0;
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        if (!empty($lang)) {
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                $appendix = '_'.$treeOrBig.'$'.$lang.'.'.$picFormat;
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        } else {
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                $appendix = '_'.$treeOrBig.'.'.$picFormat;
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        }
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        $tmp = preg_replace('/\.([^.]+)$/', $appendix, basename($file), -1, $cnt);
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        if ($cnt == 0) $tmp .= $appendix;
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        return dirname($file).'/'.$tmp;
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}