1--TEST-- 2Bug #76738 Wrong handling of output buffer 3--SKIPIF-- 4<?php 5require_once('skipif.inc'); 6if (!extension_loaded('mbstring')) die('skip mbstring extension not available'); 7?> 8--FILE-- 9<?php declare(strict_types=1); 10$test_string = base64_decode('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'); 11$after_load = (new rh_rte_helper_debug)->on_load($test_string); 12 13var_dump($after_load === $test_string); 14 15final class rh_rte_helper_debug 16{ 17 public $errors = []; 18 19 public function on_load(string $content): string 20 { 21 $content = utf8_encode($content); 22 $content = $this->add_outer_html($content); 23 $content = $this->remove_garbage($content); 24 $has_root_block = $this->has_root_block($content); 25 if(!$has_root_block) 26 { 27 $content = $this->add_root_block($content); 28 } 29 $content = $this->remove_outer_html($content); 30 $content = mb_convert_encoding($content, 'html-entities', 'UTF-8'); 31 $content = utf8_decode($content); 32 return $content; 33 } 34 35 private function has_root_block(string $content): bool 36 { 37 $return = $content; 38 $doc = $this->get_dom($content); 39 if($doc != FALSE) 40 { 41 $xpath = ($doc != FALSE) ? new DomXpath($doc) : FALSE; 42 if($xpath != FALSE) 43 { 44 $path = '//*[contains(concat(" ", normalize-space(@class), " "), "tinymce-generated-root-block")]'; 45 $nodes = $xpath->query($path); 46 $nodes_idx = ($nodes != FALSE) ? $nodes->length : 0; 47 if($nodes_idx > 0) 48 { 49 return TRUE; 50 } 51 else 52 { 53 return FALSE; 54 } 55 } 56 else 57 { 58 return FALSE; 59 } 60 } 61 else 62 { 63 return FALSE; 64 } 65 } 66 67 private function add_root_block(string $content): string 68 { 69 $return = $content; 70 $doc = $this->get_dom($content); 71 if($doc != FALSE) 72 { 73 $xpath = ($doc != FALSE) ? new DomXpath($doc) : FALSE; 74 if($xpath != FALSE) 75 { 76 $path = '//*[contains(concat(" ", normalize-space(@class), " "), "tinymce-generated-root-block")]'; 77 $nodes = $xpath->query($path); 78 $nodes_idx = ($nodes != FALSE) ? $nodes->length : 0; 79 if($nodes_idx == 0) 80 { 81 $root_div = $doc->createElement('div'); 82 $root_div->setAttribute('class', 'tinymce-generated-root-block'); 83 $root_div->setAttribute('style', 'margin: 0px; padding: 0px;'); 84 $body = $doc->getElementsByTagName('body')->item(0); 85 if($body !== NULL) 86 { 87 while($body->childNodes->length > 0) 88 { 89 $root_div->appendChild($body->childNodes->item(0)); 90 } 91 $body->appendChild($root_div); 92 $return = $doc->saveHTML(); 93 } 94 } 95 } 96 } 97 return $return; 98 } 99 100 private function add_outer_html(string $content): string 101 { 102 return '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><title>Tidy</title></head><body>' . $content . '</body></html>'; 103 } 104 105 private function remove_root_block(string $content): string 106 { 107 return $this->remove_block($content, 'tinymce-generated-root-block'); 108 } 109 110 private function remove_garbage(string $content): string 111 { 112 return $this->remove_block($content, 'tinymce-garbage-root-block'); 113 } 114 115 private function get_dom(string $html, bool $add_outer_html=TRUE): DOMDocument 116 { 117 $use_internal_errors = libxml_use_internal_errors(TRUE); 118 $dom = new DOMDocument; 119 $dom->resolveExternals = FALSE; 120 $dom->preserveWhiteSpace = TRUE; 121 $dom->strictErrorChecking = FALSE; 122 $dom->formatOutput = TRUE; 123 $dom->recover = TRUE; 124 $dom->validateOnParse = TRUE; 125 $dom->substituteEntities = FALSE; 126 $html = mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'); 127 $options = 0; 128 if(!$add_outer_html) 129 { 130 $options = LIBXML_HTML_NOIMPLIED; 131 } 132 $options = $options | LIBXML_HTML_NODEFDTD; 133 $loaded = @$dom->loadHTML('<?xml encoding="UTF-8">' . $html, $options); 134 if(!$loaded) 135 { 136 $dom = FALSE; 137 $this->errors = libxml_get_errors(); 138 } 139 else 140 { 141 foreach($dom->childNodes as $item) 142 { 143 if($item->nodeType == XML_PI_NODE) 144 { 145 $dom->removeChild($item); 146 } 147 } 148 $dom->encoding = 'UTF-8'; 149 } 150 libxml_clear_errors(); 151 libxml_use_internal_errors($use_internal_errors); 152 return $dom; 153 } 154 155 private function remove_outer_html(string $content): string 156 { 157 $return = $content; 158 $doc = $this->get_dom($content); 159 if($doc !== FALSE) 160 { 161 if($doc->doctype !== NULL) 162 { 163 $doc->doctype->parentNode->removeChild($doc->doctype); 164 } 165 $html = $doc->getElementsByTagName('html')->item(0); 166 if($html !== NULL) 167 { 168 $fragment = $doc->createDocumentFragment(); 169 while($html->childNodes->length > 0) 170 { 171 $childNode = $html->childNodes->item(0); 172 $fragment->appendChild($childNode); 173 } 174 $html->parentNode->replaceChild($fragment, $html); 175 } 176 $body = $doc->getElementsByTagName('body')->item(0); 177 if($body !== NULL) 178 { 179 $return = ''; 180 $fragment = $doc->createDocumentFragment(); 181 while($body->childNodes->length > 0) 182 { 183 $childNode = $body->childNodes->item(0); 184 $fragment->appendChild($childNode); 185 $return .= $doc->saveHTML($childNode); 186 } 187 $body->parentNode->replaceChild($fragment, $body); 188 } 189 else 190 { 191 $return = $doc->saveHTML(); 192 } 193 } 194 return $return; 195 } 196 197 private function remove_block(string $content, string $class='tinymce-generated-root-block'): string 198 { 199 $return = $content; 200 $doc = $this->get_dom($content); 201 if($doc != FALSE) 202 { 203 $xpath = ($doc != FALSE) ? new DomXpath($doc) : FALSE; 204 if($xpath != FALSE) 205 { 206 $path = '//*[contains(concat(" ", normalize-space(@class), " "), "'.$class.'")]'; 207 $nodes = $xpath->query($path); 208 $nodes_idx = ($nodes != FALSE) ? $nodes->length : 0; 209 if($nodes_idx > 0) 210 { 211 foreach($nodes as $node) 212 { 213 $fragment = $doc->createDocumentFragment(); 214 while($node->childNodes->length > 0) 215 { 216 $childNode = $node->childNodes->item(0); 217 if($childNode->nodeType == XML_TEXT_NODE) 218 { 219 $fragment->appendChild($doc->createTextNode($childNode->nodeValue)); 220 $childNode->parentNode->removeChild($childNode); 221 } 222 else 223 { 224 $fragment->appendChild($childNode); 225 } 226 } 227 $node->parentNode->replaceChild($fragment, $node); 228 } 229 $return = $doc->saveHTML(); 230 } 231 } 232 } 233 return $return; 234 } 235} 236--EXPECT-- 237bool(true) 238
