diff --git a/config/app.php.txt b/config/app.php.txt index 54e69ed..191e5c1 100644 --- a/config/app.php.txt +++ b/config/app.php.txt @@ -306,6 +306,22 @@ define('CRAWL_ROBOTS_DEFAULT_RULES', null); // string|null */ define('CRAWL_ROBOTS_POSTFIX_RULES', null); // string|null +/* + * Generates hostPageDom index based on hostPage.data field + * + * Could be useful for building semantical index query (config/sphinx.conf.txt) + * + * At this moment feature available in the CLI only (cli/yggo.php) + * + */ +define('CRAWL_HOST_PAGE_DOM_SELECTORS', 'h1,h2,h3,h4,h5,h6'); + +/* + * Strip HTML in the CRAWL_HOST_PAGE_DOM_SELECTORS content + * + */ +define('CRAWL_HOST_PAGE_DOM_STRIP_TAGS', true); + /* * Look for third-party manifests to collect distributed index * @@ -386,6 +402,12 @@ define('CLEAN_PAGE_BAN_SECONDS_OFFSET', 60*60*24*30); */ define('CLEAN_PAGE_DESCRIPTION_OFFSET', 60*60*24*30*12*10); +/* + * Remove page DOM history after following time + * + */ +define('CLEAN_PAGE_DOM_OFFSET', 60*60*24*30*12*10); + /* * Database tables optimization * diff --git a/crontab/cleaner.php b/crontab/cleaner.php index 29d8fe8..91069dc 100644 --- a/crontab/cleaner.php +++ b/crontab/cleaner.php @@ -32,6 +32,7 @@ $manifestsTotal = $db->getTotalManifests(); $hostsUpdated = 0; $hostPagesDeleted = 0; $hostPagesDescriptionsDeleted = 0; +$hostPagesDomsDeleted = 0; $hostPagesSnapDeleted = 0; $hostPagesToHostPageDeleted = 0; $manifestsDeleted = 0; @@ -81,6 +82,9 @@ try { // Delete host page descriptions $hostPagesDescriptionsDeleted += $db->deleteHostPageDescriptions($hostPage->hostPageId); + // Delete host page DOMs + $hostPagesDomsDeleted += $db->deleteHostPageDoms($hostPage->hostPageId); + // Delete host page refs data $hostPagesToHostPageDeleted += $db->deleteHostPageToHostPage($hostPage->hostPageId); @@ -124,6 +128,9 @@ try { // Delete host page descriptions $hostPagesDescriptionsDeleted += $db->deleteHostPageDescriptions($hostPage->hostPageId); + // Delete host page DOMs + $hostPagesDomsDeleted += $db->deleteHostPageDoms($hostPage->hostPageId); + // Delete host page refs data $hostPagesToHostPageDeleted += $db->deleteHostPageToHostPage($hostPage->hostPageId); @@ -223,6 +230,9 @@ try { // Delete host page descriptions $hostPagesDescriptionsDeleted += $db->deleteHostPageDescriptions($hostPageBanned->hostPageId); + // Delete host page DOMs + $hostPagesDomsDeleted += $db->deleteHostPageDoms($hostPage->hostPageId); + // Delete host page refs data $hostPagesToHostPageDeleted += $db->deleteHostPageToHostPage($hostPageBanned->hostPageId); @@ -254,6 +264,9 @@ try { // Delete page description history $hostPagesDescriptionsDeleted += $db->deleteHostPageDescriptionsByTimeAdded(time() - CLEAN_PAGE_DESCRIPTION_OFFSET); + // Delete page dom history + $hostPagesDomsDeleted += $db->deleteHostPageDomsByTimeAdded(time() - CLEAN_PAGE_DOM_OFFSET); + // Delete deprecated logs $logsCleanerDeleted += $db->deleteLogCleaner(time() - CLEAN_LOG_SECONDS_OFFSET); $logsCrawlerDeleted += $db->deleteLogCrawler(time() - CRAWL_LOG_SECONDS_OFFSET); @@ -292,6 +305,7 @@ if (CLEAN_LOG_ENABLED) { $hostsUpdated, $hostPagesDeleted, $hostPagesDescriptionsDeleted, + $hostPagesDomsDeleted, $hostPagesSnapDeleted, $hostPagesToHostPageDeleted, $hostPagesBansRemoved, @@ -316,6 +330,7 @@ echo 'Manifests deleted: ' . $manifestsDeleted . PHP_EOL; echo 'Host page bans removed: ' . $hostPagesBansRemoved . PHP_EOL; echo 'Host page descriptions deleted: ' . $hostPagesDescriptionsDeleted . PHP_EOL; +echo 'Host page doms deleted: ' . $hostPagesDomsDeleted . PHP_EOL; echo 'Host page snaps deleted: ' . $hostPagesSnapDeleted . PHP_EOL; echo 'Host page to host page deleted: ' . $hostPagesToHostPageDeleted . PHP_EOL; diff --git a/crontab/crawler.php b/crontab/crawler.php index 639438d..9a8bf7d 100644 --- a/crontab/crawler.php +++ b/crontab/crawler.php @@ -17,6 +17,7 @@ require_once('../library/robots.php'); require_once('../library/filter.php'); require_once('../library/parser.php'); require_once('../library/mysql.php'); +require_once('../library/vendor/simple_html_dom.php'); // Check disk quota if (CRAWL_STOP_DISK_QUOTA_MB_LEFT > disk_free_space('/') / 1000000) { @@ -491,7 +492,33 @@ foreach ($db->getHostPageCrawlQueue(CRAWL_PAGE_LIMIT, time() - CRAWL_PAGE_SECOND $metaKeywords = null; $metaYggoManifest = null; - // Parse content + // Collect page DOM elements data + if (CRAWL_HOST_PAGE_DOM_SELECTORS) { + + // Begin selectors extraction + $html = str_get_html($content); + + foreach ((array) explode(',', CRAWL_HOST_PAGE_DOM_SELECTORS) as $selector) { + + foreach($html->find($selector) as $element) { + + if (!empty($element->innertext)) { + + $db->addHostPageDom($queueHostPage->hostPageId, + time(), + $selector, + trim(CRAWL_HOST_PAGE_DOM_STRIP_TAGS ? strip_tags( + preg_replace('/[\s]+/', + ' ', + str_replace(['
', '
', '
', 'innertext))) : $element->innertext)); + } + } + } + } + + // Parse page content $dom = new DomDocument(); if ($encoding = mb_detect_encoding($content)) { diff --git a/database/yggo.mwb b/database/yggo.mwb index ed236d8..ef6b054 100644 Binary files a/database/yggo.mwb and b/database/yggo.mwb differ diff --git a/library/mysql.php b/library/mysql.php index 01ced4b..3942ab7 100644 --- a/library/mysql.php +++ b/library/mysql.php @@ -198,6 +198,13 @@ class MySQL { return $query->fetchAll(); } + public function getHostPagesByIndexed() { + + $query = $this->_db->query('SELECT * FROM `hostPage` WHERE `timeUpdated` IS NOT NULL AND `timeBanned` IS NULL LIMIT 100,1'); // @TODO + + return $query->fetchAll(); + } + public function getHostPagesByLimit(int $hostId, int $limit) { $query = $this->_db->prepare('SELECT * FROM `hostPage` WHERE `hostId` = ? ORDER BY `hostPageId` DESC LIMIT ' . (int) $limit); @@ -486,6 +493,34 @@ class MySQL { return $query->fetch()->size; } + public function addHostPageDom(int $hostPageId, int $timeAdded, string $selector, string $value) { + + $query = $this->_db->prepare('INSERT INTO `hostPageDom` SET `hostPageId` = ?, `timeAdded` = ?, `selector` = ?, `value` = ?'); + + $query->execute([$hostPageId, $timeAdded, $selector, $value]); + } + + public function deleteHostPageDoms(int $hostPageId) { + + $query = $this->_db->query('DELETE FROM `hostPageDom` WHERE `hostPageId` = ?'); + + return $query->rowCount(); + } + + public function deleteHostPageDomsByTimeAdded(int $timeOffset) { + + $query = $this->_db->prepare('DELETE FROM `hostPageDom` WHERE `timeAdded` < ' . (int) $timeOffset); + + $query->execute(); + + return $query->rowCount(); + } + + public function truncateHostPageDom() { + + $query = $this->_db->query('TRUNCATE `hostPageDom`'); + } + // Cleaner tools public function getCleanerQueue(int $limit, int $timeFrom) { @@ -532,6 +567,7 @@ class MySQL { int $hostsUpdated, int $hostPagesDeleted, int $hostPagesDescriptionsDeleted, + int $hostPagesDomsDeleted, int $hostPagesSnapDeleted, int $hostPagesToHostPageDeleted, int $hostPagesBansRemoved, @@ -550,6 +586,7 @@ class MySQL { `hostsUpdated`, `hostPagesDeleted`, `hostPagesDescriptionsDeleted`, + `hostPagesDomsDeleted`, `hostPagesSnapDeleted`, `hostPagesToHostPageDeleted`, `hostPagesBansRemoved`, @@ -561,7 +598,7 @@ class MySQL { `httpRequestsSizeTotal`, `httpDownloadSizeTotal`, `httpRequestsTimeTotal`, - `executionTimeTotal`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'); + `executionTimeTotal`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'); $query->execute([ $timeAdded, @@ -569,6 +606,7 @@ class MySQL { $hostsUpdated, $hostPagesDeleted, $hostPagesDescriptionsDeleted, + $hostPagesDomsDeleted, $hostPagesSnapDeleted, $hostPagesToHostPageDeleted, $hostPagesBansRemoved, @@ -718,6 +756,7 @@ class MySQL { $this->_db->query('OPTIMIZE TABLE `host`'); $this->_db->query('OPTIMIZE TABLE `hostPage`'); $this->_db->query('OPTIMIZE TABLE `hostPageDescription`'); + $this->_db->query('OPTIMIZE TABLE `hostPageDom`'); $this->_db->query('OPTIMIZE TABLE `hostPageSnap`'); $this->_db->query('OPTIMIZE TABLE `hostPageSnapDownload`'); $this->_db->query('OPTIMIZE TABLE `hostPageToHostPage`'); diff --git a/library/vendor/simple_html_dom.php b/library/vendor/simple_html_dom.php new file mode 100644 index 0000000..2a2f804 --- /dev/null +++ b/library/vendor/simple_html_dom.php @@ -0,0 +1,2353 @@ + $maxLen) { + $dom->clear(); + return false; + } + + return $dom->load($contents, $lowercase, $stripRN); +} + +function str_get_html( + $str, + $lowercase = true, + $forceTagsClosed = true, + $target_charset = DEFAULT_TARGET_CHARSET, + $stripRN = true, + $defaultBRText = DEFAULT_BR_TEXT, + $defaultSpanText = DEFAULT_SPAN_TEXT) +{ + $dom = new simple_html_dom( + null, + $lowercase, + $forceTagsClosed, + $target_charset, + $stripRN, + $defaultBRText, + $defaultSpanText + ); + + if (empty($str) || strlen($str) > MAX_FILE_SIZE) { + $dom->clear(); + return false; + } + + return $dom->load($str, $lowercase, $stripRN); +} + +function dump_html_tree($node, $show_attr = true, $deep = 0) +{ + $node->dump($node); +} + +class simple_html_dom_node +{ + public $nodetype = HDOM_TYPE_TEXT; + public $tag = 'text'; + public $attr = array(); + public $children = array(); + public $nodes = array(); + public $parent = null; + public $_ = array(); + public $tag_start = 0; + private $dom = null; + + function __construct($dom) + { + $this->dom = $dom; + $dom->nodes[] = $this; + } + + function __destruct() + { + $this->clear(); + } + + function __toString() + { + return $this->outertext(); + } + + function clear() + { + $this->dom = null; + $this->nodes = null; + $this->parent = null; + $this->children = null; + } + + function dump($show_attr = true, $depth = 0) + { + echo str_repeat("\t", $depth) . $this->tag; + + if ($show_attr && count($this->attr) > 0) { + echo '('; + foreach ($this->attr as $k => $v) { + echo "[$k]=>\"$v\", "; + } + echo ')'; + } + + echo "\n"; + + if ($this->nodes) { + foreach ($this->nodes as $node) { + $node->dump($show_attr, $depth + 1); + } + } + } + + function dump_node($echo = true) + { + $string = $this->tag; + + if (count($this->attr) > 0) { + $string .= '('; + foreach ($this->attr as $k => $v) { + $string .= "[$k]=>\"$v\", "; + } + $string .= ')'; + } + + if (count($this->_) > 0) { + $string .= ' $_ ('; + foreach ($this->_ as $k => $v) { + if (is_array($v)) { + $string .= "[$k]=>("; + foreach ($v as $k2 => $v2) { + $string .= "[$k2]=>\"$v2\", "; + } + $string .= ')'; + } else { + $string .= "[$k]=>\"$v\", "; + } + } + $string .= ')'; + } + + if (isset($this->text)) { + $string .= " text: ({$this->text})"; + } + + $string .= ' HDOM_INNER_INFO: '; + + if (isset($node->_[HDOM_INFO_INNER])) { + $string .= "'" . $node->_[HDOM_INFO_INNER] . "'"; + } else { + $string .= ' NULL '; + } + + $string .= ' children: ' . count($this->children); + $string .= ' nodes: ' . count($this->nodes); + $string .= ' tag_start: ' . $this->tag_start; + $string .= "\n"; + + if ($echo) { + echo $string; + return; + } else { + return $string; + } + } + + function parent($parent = null) + { + // I am SURE that this doesn't work properly. + // It fails to unset the current node from it's current parents nodes or + // children list first. + if ($parent !== null) { + $this->parent = $parent; + $this->parent->nodes[] = $this; + $this->parent->children[] = $this; + } + + return $this->parent; + } + + function has_child() + { + return !empty($this->children); + } + + function children($idx = -1) + { + if ($idx === -1) { + return $this->children; + } + + if (isset($this->children[$idx])) { + return $this->children[$idx]; + } + + return null; + } + + function first_child() + { + if (count($this->children) > 0) { + return $this->children[0]; + } + return null; + } + + function last_child() + { + if (count($this->children) > 0) { + return end($this->children); + } + return null; + } + + function next_sibling() + { + if ($this->parent === null) { + return null; + } + + $idx = array_search($this, $this->parent->children, true); + + if ($idx !== false && isset($this->parent->children[$idx + 1])) { + return $this->parent->children[$idx + 1]; + } + + return null; + } + + function prev_sibling() + { + if ($this->parent === null) { + return null; + } + + $idx = array_search($this, $this->parent->children, true); + + if ($idx !== false && $idx > 0) { + return $this->parent->children[$idx - 1]; + } + + return null; + } + + function find_ancestor_tag($tag) + { + global $debug_object; + if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } + + if ($this->parent === null) { + return null; + } + + $ancestor = $this->parent; + + while (!is_null($ancestor)) { + if (is_object($debug_object)) { + $debug_object->debug_log(2, 'Current tag is: ' . $ancestor->tag); + } + + if ($ancestor->tag === $tag) { + break; + } + + $ancestor = $ancestor->parent; + } + + return $ancestor; + } + + function innertext() + { + if (isset($this->_[HDOM_INFO_INNER])) { + return $this->_[HDOM_INFO_INNER]; + } + + if (isset($this->_[HDOM_INFO_TEXT])) { + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + } + + $ret = ''; + + foreach ($this->nodes as $n) { + $ret .= $n->outertext(); + } + + return $ret; + } + + function outertext() + { + global $debug_object; + + if (is_object($debug_object)) { + $text = ''; + + if ($this->tag === 'text') { + if (!empty($this->text)) { + $text = ' with text: ' . $this->text; + } + } + + $debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text); + } + + if ($this->tag === 'root') { + return $this->innertext(); + } + + // todo: What is the use of this callback? Remove? + if ($this->dom && $this->dom->callback !== null) { + call_user_func_array($this->dom->callback, array($this)); + } + + if (isset($this->_[HDOM_INFO_OUTER])) { + return $this->_[HDOM_INFO_OUTER]; + } + + if (isset($this->_[HDOM_INFO_TEXT])) { + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + } + + $ret = ''; + + if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]) { + $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup(); + } + + if (isset($this->_[HDOM_INFO_INNER])) { + // todo:
should either never have HDOM_INFO_INNER or always + if ($this->tag !== 'br') { + $ret .= $this->_[HDOM_INFO_INNER]; + } + } elseif ($this->nodes) { + foreach ($this->nodes as $n) { + $ret .= $this->convert_text($n->outertext()); + } + } + + if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END] != 0) { + $ret .= 'tag . '>'; + } + + return $ret; + } + + function text() + { + if (isset($this->_[HDOM_INFO_INNER])) { + return $this->_[HDOM_INFO_INNER]; + } + + switch ($this->nodetype) { + case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + case HDOM_TYPE_COMMENT: return ''; + case HDOM_TYPE_UNKNOWN: return ''; + } + + if (strcasecmp($this->tag, 'script') === 0) { return ''; } + if (strcasecmp($this->tag, 'style') === 0) { return ''; } + + $ret = ''; + + // In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed + // for some span tags, and some p tags) $this->nodes is set to NULL. + // NOTE: This indicates that there is a problem where it's set to NULL + // without a clear happening. + // WHY is this happening? + if (!is_null($this->nodes)) { + foreach ($this->nodes as $n) { + // Start paragraph after a blank line + if ($n->tag === 'p') { + $ret = trim($ret) . "\n\n"; + } + + $ret .= $this->convert_text($n->text()); + + // If this node is a span... add a space at the end of it so + // multiple spans don't run into each other. This is plaintext + // after all. + if ($n->tag === 'span') { + $ret .= $this->dom->default_span_text; + } + } + } + return $ret; + } + + function xmltext() + { + $ret = $this->innertext(); + $ret = str_ireplace('', '', $ret); + return $ret; + } + + function makeup() + { + // text, comment, unknown + if (isset($this->_[HDOM_INFO_TEXT])) { + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + } + + $ret = '<' . $this->tag; + $i = -1; + + foreach ($this->attr as $key => $val) { + ++$i; + + // skip removed attribute + if ($val === null || $val === false) { continue; } + + $ret .= $this->_[HDOM_INFO_SPACE][$i][0]; + + //no value attr: nowrap, checked selected... + if ($val === true) { + $ret .= $key; + } else { + switch ($this->_[HDOM_INFO_QUOTE][$i]) + { + case HDOM_QUOTE_DOUBLE: $quote = '"'; break; + case HDOM_QUOTE_SINGLE: $quote = '\''; break; + default: $quote = ''; + } + + $ret .= $key + . $this->_[HDOM_INFO_SPACE][$i][1] + . '=' + . $this->_[HDOM_INFO_SPACE][$i][2] + . $quote + . $val + . $quote; + } + } + + $ret = $this->dom->restore_noise($ret); + return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>'; + } + + function find($selector, $idx = null, $lowercase = false) + { + $selectors = $this->parse_selector($selector); + if (($count = count($selectors)) === 0) { return array(); } + $found_keys = array(); + + // find each selector + for ($c = 0; $c < $count; ++$c) { + // The change on the below line was documented on the sourceforge + // code tracker id 2788009 + // used to be: if (($levle=count($selectors[0]))===0) return array(); + if (($levle = count($selectors[$c])) === 0) { return array(); } + if (!isset($this->_[HDOM_INFO_BEGIN])) { return array(); } + + $head = array($this->_[HDOM_INFO_BEGIN] => 1); + $cmd = ' '; // Combinator + + // handle descendant selectors, no recursive! + for ($l = 0; $l < $levle; ++$l) { + $ret = array(); + + foreach ($head as $k => $v) { + $n = ($k === -1) ? $this->dom->root : $this->dom->nodes[$k]; + //PaperG - Pass this optional parameter on to the seek function. + $n->seek($selectors[$c][$l], $ret, $cmd, $lowercase); + } + + $head = $ret; + $cmd = $selectors[$c][$l][4]; // Next Combinator + } + + foreach ($head as $k => $v) { + if (!isset($found_keys[$k])) { + $found_keys[$k] = 1; + } + } + } + + // sort keys + ksort($found_keys); + + $found = array(); + foreach ($found_keys as $k => $v) { + $found[] = $this->dom->nodes[$k]; + } + + // return nth-element or array + if (is_null($idx)) { return $found; } + elseif ($idx < 0) { $idx = count($found) + $idx; } + return (isset($found[$idx])) ? $found[$idx] : null; + } + + protected function seek($selector, &$ret, $parent_cmd, $lowercase = false) + { + global $debug_object; + if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } + + list($tag, $id, $class, $attributes, $cmb) = $selector; + $nodes = array(); + + if ($parent_cmd === ' ') { // Descendant Combinator + // Find parent closing tag if the current element doesn't have a closing + // tag (i.e. void element) + $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0; + if ($end == 0) { + $parent = $this->parent; + while (!isset($parent->_[HDOM_INFO_END]) && $parent !== null) { + $end -= 1; + $parent = $parent->parent; + } + $end += $parent->_[HDOM_INFO_END]; + } + + // Get list of target nodes + $nodes_start = $this->_[HDOM_INFO_BEGIN] + 1; + $nodes_count = $end - $nodes_start; + $nodes = array_slice($this->dom->nodes, $nodes_start, $nodes_count, true); + } elseif ($parent_cmd === '>') { // Child Combinator + $nodes = $this->children; + } elseif ($parent_cmd === '+' + && $this->parent + && in_array($this, $this->parent->children)) { // Next-Sibling Combinator + $index = array_search($this, $this->parent->children, true) + 1; + if ($index < count($this->parent->children)) + $nodes[] = $this->parent->children[$index]; + } elseif ($parent_cmd === '~' + && $this->parent + && in_array($this, $this->parent->children)) { // Subsequent Sibling Combinator + $index = array_search($this, $this->parent->children, true); + $nodes = array_slice($this->parent->children, $index); + } + + // Go throgh each element starting at this element until the end tag + // Note: If this element is a void tag, any previous void element is + // skipped. + foreach($nodes as $node) { + $pass = true; + + // Skip root nodes + if(!$node->parent) { + $pass = false; + } + + // Handle 'text' selector + if($pass && $tag === 'text' && $node->tag === 'text') { + $ret[array_search($node, $this->dom->nodes, true)] = 1; + unset($node); + continue; + } + + // Skip if node isn't a child node (i.e. text nodes) + if($pass && !in_array($node, $node->parent->children, true)) { + $pass = false; + } + + // Skip if tag doesn't match + if ($pass && $tag !== '' && $tag !== $node->tag && $tag !== '*') { + $pass = false; + } + + // Skip if ID doesn't exist + if ($pass && $id !== '' && !isset($node->attr['id'])) { + $pass = false; + } + + // Check if ID matches + if ($pass && $id !== '' && isset($node->attr['id'])) { + // Note: Only consider the first ID (as browsers do) + $node_id = explode(' ', trim($node->attr['id']))[0]; + + if($id !== $node_id) { $pass = false; } + } + + // Check if all class(es) exist + if ($pass && $class !== '' && is_array($class) && !empty($class)) { + if (isset($node->attr['class'])) { + $node_classes = explode(' ', $node->attr['class']); + + if ($lowercase) { + $node_classes = array_map('strtolower', $node_classes); + } + + foreach($class as $c) { + if(!in_array($c, $node_classes)) { + $pass = false; + break; + } + } + } else { + $pass = false; + } + } + + // Check attributes + if ($pass + && $attributes !== '' + && is_array($attributes) + && !empty($attributes)) { + foreach($attributes as $a) { + list ( + $att_name, + $att_expr, + $att_val, + $att_inv, + $att_case_sensitivity + ) = $a; + + // Handle indexing attributes (i.e. "[2]") + /** + * Note: This is not supported by the CSS Standard but adds + * the ability to select items compatible to XPath (i.e. + * the 3rd element within it's parent). + * + * Note: This doesn't conflict with the CSS Standard which + * doesn't work on numeric attributes anyway. + */ + if (is_numeric($att_name) + && $att_expr === '' + && $att_val === '') { + $count = 0; + + // Find index of current element in parent + foreach ($node->parent->children as $c) { + if ($c->tag === $node->tag) ++$count; + if ($c === $node) break; + } + + // If this is the correct node, continue with next + // attribute + if ($count === (int)$att_name) continue; + } + + // Check attribute availability + if ($att_inv) { // Attribute should NOT be set + if (isset($node->attr[$att_name])) { + $pass = false; + break; + } + } else { // Attribute should be set + // todo: "plaintext" is not a valid CSS selector! + if ($att_name !== 'plaintext' + && !isset($node->attr[$att_name])) { + $pass = false; + break; + } + } + + // Continue with next attribute if expression isn't defined + if ($att_expr === '') continue; + + // If they have told us that this is a "plaintext" + // search then we want the plaintext of the node - right? + // todo "plaintext" is not a valid CSS selector! + if ($att_name === 'plaintext') { + $nodeKeyValue = $node->text(); + } else { + $nodeKeyValue = $node->attr[$att_name]; + } + + if (is_object($debug_object)) { + $debug_object->debug_log(2, + 'testing node: ' + . $node->tag + . ' for attribute: ' + . $att_name + . $att_expr + . $att_val + . ' where nodes value is: ' + . $nodeKeyValue + ); + } + + // If lowercase is set, do a case insensitive test of + // the value of the selector. + if ($lowercase) { + $check = $this->match( + $att_expr, + strtolower($att_val), + strtolower($nodeKeyValue), + $att_case_sensitivity + ); + } else { + $check = $this->match( + $att_expr, + $att_val, + $nodeKeyValue, + $att_case_sensitivity + ); + } + + if (is_object($debug_object)) { + $debug_object->debug_log(2, + 'after match: ' + . ($check ? 'true' : 'false') + ); + } + + if (!$check) { + $pass = false; + break; + } + } + } + + // Found a match. Add to list and clear node + if ($pass) $ret[$node->_[HDOM_INFO_BEGIN]] = 1; + unset($node); + } + // It's passed by reference so this is actually what this function returns. + if (is_object($debug_object)) { + $debug_object->debug_log(1, 'EXIT - ret: ', $ret); + } + } + + protected function match($exp, $pattern, $value, $case_sensitivity) + { + global $debug_object; + if (is_object($debug_object)) {$debug_object->debug_log_entry(1);} + + if ($case_sensitivity === 'i') { + $pattern = strtolower($pattern); + $value = strtolower($value); + } + + switch ($exp) { + case '=': + return ($value === $pattern); + case '!=': + return ($value !== $pattern); + case '^=': + return preg_match('/^' . preg_quote($pattern, '/') . '/', $value); + case '$=': + return preg_match('/' . preg_quote($pattern, '/') . '$/', $value); + case '*=': + return preg_match('/' . preg_quote($pattern, '/') . '/', $value); + case '|=': + /** + * [att|=val] + * + * Represents an element with the att attribute, its value + * either being exactly "val" or beginning with "val" + * immediately followed by "-" (U+002D). + */ + return strpos($value, $pattern) === 0; + case '~=': + /** + * [att~=val] + * + * Represents an element with the att attribute whose value is a + * whitespace-separated list of words, one of which is exactly + * "val". If "val" contains whitespace, it will never represent + * anything (since the words are separated by spaces). Also if + * "val" is the empty string, it will never represent anything. + */ + return in_array($pattern, explode(' ', trim($value)), true); + } + return false; + } + + protected function parse_selector($selector_string) + { + global $debug_object; + if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } + + /** + * Pattern of CSS selectors, modified from mootools (https://mootools.net/) + * + * Paperg: Add the colon to the attribute, so that it properly finds + * like google does. + * + * Note: if you try to look at this attribute, you MUST use getAttribute + * since $dom->x:y will fail the php syntax check. + * + * Notice the \[ starting the attribute? and the @? following? This + * implies that an attribute can begin with an @ sign that is not + * captured. This implies that an html attribute specifier may start + * with an @ sign that is NOT captured by the expression. Farther study + * is required to determine of this should be documented or removed. + * + * Matches selectors in this order: + * + * [0] - full match + * + * [1] - tag name + * ([\w:\*-]*) + * Matches the tag name consisting of zero or more words, colons, + * asterisks and hyphens. + * + * [2] - id name + * (?:\#([\w-]+)) + * Optionally matches a id name, consisting of an "#" followed by + * the id name (one or more words and hyphens). + * + * [3] - class names (including dots) + * (?:\.([\w\.-]+))? + * Optionally matches a list of classs, consisting of an "." + * followed by the class name (one or more words and hyphens) + * where multiple classes can be chained (i.e. ".foo.bar.baz") + * + * [4] - attributes + * ((?:\[@?(?:!?[\w:-]+)(?:(?:[!*^$|~]?=)[\"']?(?:.*?)[\"']?)?(?:\s*?(?:[iIsS])?)?\])+)? + * Optionally matches the attributes list + * + * [5] - separator + * ([\/, >+~]+) + * Matches the selector list separator + */ + // phpcs:ignore Generic.Files.LineLength + $pattern = "/([\w:\*-]*)(?:\#([\w-]+))?(?:|\.([\w\.-]+))?((?:\[@?(?:!?[\w:-]+)(?:(?:[!*^$|~]?=)[\"']?(?:.*?)[\"']?)?(?:\s*?(?:[iIsS])?)?\])+)?([\/, >+~]+)/is"; + + preg_match_all( + $pattern, + trim($selector_string) . ' ', // Add final ' ' as pseudo separator + $matches, + PREG_SET_ORDER + ); + + if (is_object($debug_object)) { + $debug_object->debug_log(2, 'Matches Array: ', $matches); + } + + $selectors = array(); + $result = array(); + + foreach ($matches as $m) { + $m[0] = trim($m[0]); + + // Skip NoOps + if ($m[0] === '' || $m[0] === '/' || $m[0] === '//') { continue; } + + // Convert to lowercase + if ($this->dom->lowercase) { + $m[1] = strtolower($m[1]); + } + + // Extract classes + if ($m[3] !== '') { $m[3] = explode('.', $m[3]); } + + /* Extract attributes (pattern based on the pattern above!) + + * [0] - full match + * [1] - attribute name + * [2] - attribute expression + * [3] - attribute value + * [4] - case sensitivity + * + * Note: Attributes can be negated with a "!" prefix to their name + */ + if($m[4] !== '') { + preg_match_all( + "/\[@?(!?[\w:-]+)(?:([!*^$|~]?=)[\"']?(.*?)[\"']?)?(?:\s+?([iIsS])?)?\]/is", + trim($m[4]), + $attributes, + PREG_SET_ORDER + ); + + // Replace element by array + $m[4] = array(); + + foreach($attributes as $att) { + // Skip empty matches + if(trim($att[0]) === '') { continue; } + + $inverted = (isset($att[1][0]) && $att[1][0] === '!'); + $m[4][] = array( + $inverted ? substr($att[1], 1) : $att[1], // Name + (isset($att[2])) ? $att[2] : '', // Expression + (isset($att[3])) ? $att[3] : '', // Value + $inverted, // Inverted Flag + (isset($att[4])) ? strtolower($att[4]) : '', // Case-Sensitivity + ); + } + } + + // Sanitize Separator + if ($m[5] !== '' && trim($m[5]) === '') { // Descendant Separator + $m[5] = ' '; + } else { // Other Separator + $m[5] = trim($m[5]); + } + + // Clear Separator if it's a Selector List + if ($is_list = ($m[5] === ',')) { $m[5] = ''; } + + // Remove full match before adding to results + array_shift($m); + $result[] = $m; + + if ($is_list) { // Selector List + $selectors[] = $result; + $result = array(); + } + } + + if (count($result) > 0) { $selectors[] = $result; } + return $selectors; + } + + function __get($name) + { + if (isset($this->attr[$name])) { + return $this->convert_text($this->attr[$name]); + } + switch ($name) { + case 'outertext': return $this->outertext(); + case 'innertext': return $this->innertext(); + case 'plaintext': return $this->text(); + case 'xmltext': return $this->xmltext(); + default: return array_key_exists($name, $this->attr); + } + } + + function __set($name, $value) + { + global $debug_object; + if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } + + switch ($name) { + case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value; + case 'innertext': + if (isset($this->_[HDOM_INFO_TEXT])) { + return $this->_[HDOM_INFO_TEXT] = $value; + } + return $this->_[HDOM_INFO_INNER] = $value; + } + + if (!isset($this->attr[$name])) { + $this->_[HDOM_INFO_SPACE][] = array(' ', '', ''); + $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE; + } + + $this->attr[$name] = $value; + } + + function __isset($name) + { + switch ($name) { + case 'outertext': return true; + case 'innertext': return true; + case 'plaintext': return true; + } + //no value attr: nowrap, checked selected... + return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]); + } + + function __unset($name) + { + if (isset($this->attr[$name])) { unset($this->attr[$name]); } + } + + function convert_text($text) + { + global $debug_object; + if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } + + $converted_text = $text; + + $sourceCharset = ''; + $targetCharset = ''; + + if ($this->dom) { + $sourceCharset = strtoupper($this->dom->_charset); + $targetCharset = strtoupper($this->dom->_target_charset); + } + + if (is_object($debug_object)) { + $debug_object->debug_log(3, + 'source charset: ' + . $sourceCharset + . ' target charaset: ' + . $targetCharset + ); + } + + if (!empty($sourceCharset) + && !empty($targetCharset) + && (strcasecmp($sourceCharset, $targetCharset) != 0)) { + // Check if the reported encoding could have been incorrect and the text is actually already UTF-8 + if ((strcasecmp($targetCharset, 'UTF-8') == 0) + && ($this->is_utf8($text))) { + $converted_text = $text; + } else { + $converted_text = iconv($sourceCharset, $targetCharset, $text); + } + } + + // Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output. + if ($targetCharset === 'UTF-8') { + if (substr($converted_text, 0, 3) === "\xef\xbb\xbf") { + $converted_text = substr($converted_text, 3); + } + + if (substr($converted_text, -3) === "\xef\xbb\xbf") { + $converted_text = substr($converted_text, 0, -3); + } + } + + return $converted_text; + } + + static function is_utf8($str) + { + $c = 0; $b = 0; + $bits = 0; + $len = strlen($str); + for($i = 0; $i < $len; $i++) { + $c = ord($str[$i]); + if($c > 128) { + if(($c >= 254)) { return false; } + elseif($c >= 252) { $bits = 6; } + elseif($c >= 248) { $bits = 5; } + elseif($c >= 240) { $bits = 4; } + elseif($c >= 224) { $bits = 3; } + elseif($c >= 192) { $bits = 2; } + else { return false; } + if(($i + $bits) > $len) { return false; } + while($bits > 1) { + $i++; + $b = ord($str[$i]); + if($b < 128 || $b > 191) { return false; } + $bits--; + } + } + } + return true; + } + + function get_display_size() + { + global $debug_object; + + $width = -1; + $height = -1; + + if ($this->tag !== 'img') { + return false; + } + + // See if there is aheight or width attribute in the tag itself. + if (isset($this->attr['width'])) { + $width = $this->attr['width']; + } + + if (isset($this->attr['height'])) { + $height = $this->attr['height']; + } + + // Now look for an inline style. + if (isset($this->attr['style'])) { + // Thanks to user gnarf from stackoverflow for this regular expression. + $attributes = array(); + + preg_match_all( + '/([\w-]+)\s*:\s*([^;]+)\s*;?/', + $this->attr['style'], + $matches, + PREG_SET_ORDER + ); + + foreach ($matches as $match) { + $attributes[$match[1]] = $match[2]; + } + + // If there is a width in the style attributes: + if (isset($attributes['width']) && $width == -1) { + // check that the last two characters are px (pixels) + if (strtolower(substr($attributes['width'], -2)) === 'px') { + $proposed_width = substr($attributes['width'], 0, -2); + // Now make sure that it's an integer and not something stupid. + if (filter_var($proposed_width, FILTER_VALIDATE_INT)) { + $width = $proposed_width; + } + } + } + + // If there is a width in the style attributes: + if (isset($attributes['height']) && $height == -1) { + // check that the last two characters are px (pixels) + if (strtolower(substr($attributes['height'], -2)) == 'px') { + $proposed_height = substr($attributes['height'], 0, -2); + // Now make sure that it's an integer and not something stupid. + if (filter_var($proposed_height, FILTER_VALIDATE_INT)) { + $height = $proposed_height; + } + } + } + + } + + // Future enhancement: + // Look in the tag to see if there is a class or id specified that has + // a height or width attribute to it. + + // Far future enhancement + // Look at all the parent tags of this image to see if they specify a + // class or id that has an img selector that specifies a height or width + // Note that in this case, the class or id will have the img subselector + // for it to apply to the image. + + // ridiculously far future development + // If the class or id is specified in a SEPARATE css file thats not on + // the page, go get it and do what we were just doing for the ones on + // the page. + + $result = array( + 'height' => $height, + 'width' => $width + ); + + return $result; + } + + function save($filepath = '') + { + $ret = $this->outertext(); + + if ($filepath !== '') { + file_put_contents($filepath, $ret, LOCK_EX); + } + + return $ret; + } + + function addClass($class) + { + if (is_string($class)) { + $class = explode(' ', $class); + } + + if (is_array($class)) { + foreach($class as $c) { + if (isset($this->class)) { + if ($this->hasClass($c)) { + continue; + } else { + $this->class .= ' ' . $c; + } + } else { + $this->class = $c; + } + } + } else { + if (is_object($debug_object)) { + $debug_object->debug_log(2, 'Invalid type: ', gettype($class)); + } + } + } + + function hasClass($class) + { + if (is_string($class)) { + if (isset($this->class)) { + return in_array($class, explode(' ', $this->class), true); + } + } else { + if (is_object($debug_object)) { + $debug_object->debug_log(2, 'Invalid type: ', gettype($class)); + } + } + + return false; + } + + function removeClass($class = null) + { + if (!isset($this->class)) { + return; + } + + if (is_null($class)) { + $this->removeAttribute('class'); + return; + } + + if (is_string($class)) { + $class = explode(' ', $class); + } + + if (is_array($class)) { + $class = array_diff(explode(' ', $this->class), $class); + if (empty($class)) { + $this->removeAttribute('class'); + } else { + $this->class = implode(' ', $class); + } + } + } + + function getAllAttributes() + { + return $this->attr; + } + + function getAttribute($name) + { + return $this->__get($name); + } + + function setAttribute($name, $value) + { + $this->__set($name, $value); + } + + function hasAttribute($name) + { + return $this->__isset($name); + } + + function removeAttribute($name) + { + $this->__set($name, null); + } + + function remove() + { + if ($this->parent) { + $this->parent->removeChild($this); + } + } + + function removeChild($node) + { + $nidx = array_search($node, $this->nodes, true); + $cidx = array_search($node, $this->children, true); + $didx = array_search($node, $this->dom->nodes, true); + + if ($nidx !== false && $cidx !== false && $didx !== false) { + + foreach($node->children as $child) { + $node->removeChild($child); + } + + foreach($node->nodes as $entity) { + $enidx = array_search($entity, $node->nodes, true); + $edidx = array_search($entity, $node->dom->nodes, true); + + if ($enidx !== false && $edidx !== false) { + unset($node->nodes[$enidx]); + unset($node->dom->nodes[$edidx]); + } + } + + unset($this->nodes[$nidx]); + unset($this->children[$cidx]); + unset($this->dom->nodes[$didx]); + + $node->clear(); + + } + } + + function getElementById($id) + { + return $this->find("#$id", 0); + } + + function getElementsById($id, $idx = null) + { + return $this->find("#$id", $idx); + } + + function getElementByTagName($name) + { + return $this->find($name, 0); + } + + function getElementsByTagName($name, $idx = null) + { + return $this->find($name, $idx); + } + + function parentNode() + { + return $this->parent(); + } + + function childNodes($idx = -1) + { + return $this->children($idx); + } + + function firstChild() + { + return $this->first_child(); + } + + function lastChild() + { + return $this->last_child(); + } + + function nextSibling() + { + return $this->next_sibling(); + } + + function previousSibling() + { + return $this->prev_sibling(); + } + + function hasChildNodes() + { + return $this->has_child(); + } + + function nodeName() + { + return $this->tag; + } + + function appendChild($node) + { + $node->parent($this); + return $node; + } + +} + +class simple_html_dom +{ + public $root = null; + public $nodes = array(); + public $callback = null; + public $lowercase = false; + public $original_size; + public $size; + + protected $pos; + protected $doc; + protected $char; + + protected $cursor; + protected $parent; + protected $noise = array(); + protected $token_blank = " \t\r\n"; + protected $token_equal = ' =/>'; + protected $token_slash = " />\r\n\t"; + protected $token_attr = ' >'; + + public $_charset = ''; + public $_target_charset = ''; + + protected $default_br_text = ''; + + public $default_span_text = ''; + + protected $self_closing_tags = array( + 'area' => 1, + 'base' => 1, + 'br' => 1, + 'col' => 1, + 'embed' => 1, + 'hr' => 1, + 'img' => 1, + 'input' => 1, + 'link' => 1, + 'meta' => 1, + 'param' => 1, + 'source' => 1, + 'track' => 1, + 'wbr' => 1 + ); + protected $block_tags = array( + 'body' => 1, + 'div' => 1, + 'form' => 1, + 'root' => 1, + 'span' => 1, + 'table' => 1 + ); + protected $optional_closing_tags = array( + // Not optional, see + // https://www.w3.org/TR/html/textlevel-semantics.html#the-b-element + 'b' => array('b' => 1), + 'dd' => array('dd' => 1, 'dt' => 1), + // Not optional, see + // https://www.w3.org/TR/html/grouping-content.html#the-dl-element + 'dl' => array('dd' => 1, 'dt' => 1), + 'dt' => array('dd' => 1, 'dt' => 1), + 'li' => array('li' => 1), + 'optgroup' => array('optgroup' => 1, 'option' => 1), + 'option' => array('optgroup' => 1, 'option' => 1), + 'p' => array('p' => 1), + 'rp' => array('rp' => 1, 'rt' => 1), + 'rt' => array('rp' => 1, 'rt' => 1), + 'td' => array('td' => 1, 'th' => 1), + 'th' => array('td' => 1, 'th' => 1), + 'tr' => array('td' => 1, 'th' => 1, 'tr' => 1), + ); + + function __construct( + $str = null, + $lowercase = true, + $forceTagsClosed = true, + $target_charset = DEFAULT_TARGET_CHARSET, + $stripRN = true, + $defaultBRText = DEFAULT_BR_TEXT, + $defaultSpanText = DEFAULT_SPAN_TEXT, + $options = 0) + { + if ($str) { + if (preg_match('/^http:\/\//i', $str) || is_file($str)) { + $this->load_file($str); + } else { + $this->load( + $str, + $lowercase, + $stripRN, + $defaultBRText, + $defaultSpanText, + $options + ); + } + } + // Forcing tags to be closed implies that we don't trust the html, but + // it can lead to parsing errors if we SHOULD trust the html. + if (!$forceTagsClosed) { + $this->optional_closing_array = array(); + } + + $this->_target_charset = $target_charset; + } + + function __destruct() + { + $this->clear(); + } + + function load( + $str, + $lowercase = true, + $stripRN = true, + $defaultBRText = DEFAULT_BR_TEXT, + $defaultSpanText = DEFAULT_SPAN_TEXT, + $options = 0) + { + global $debug_object; + + // prepare + $this->prepare($str, $lowercase, $defaultBRText, $defaultSpanText); + + // Per sourceforge http://sourceforge.net/tracker/?func=detail&aid=2949097&group_id=218559&atid=1044037 + // Script tags removal now preceeds style tag removal. + // strip out