466 lines
12 KiB
PHP
466 lines
12 KiB
PHP
<?php
|
|
require_once(__DIR__ . '/BridgeInterface.php');
|
|
abstract class BridgeAbstract implements BridgeInterface {
|
|
|
|
const NAME = 'Unnamed bridge';
|
|
const URI = '';
|
|
const DESCRIPTION = 'No description provided';
|
|
const MAINTAINER = 'No maintainer';
|
|
const CACHE_TIMEOUT = 3600;
|
|
const PARAMETERS = array();
|
|
|
|
public $useProxy = true;
|
|
|
|
protected $cache;
|
|
protected $items = array();
|
|
protected $inputs = array();
|
|
protected $queriedContext = '';
|
|
|
|
protected function returnError($message, $code){
|
|
throw new \HttpException($message, $code);
|
|
}
|
|
|
|
protected function returnClientError($message){
|
|
$this->returnError($message, 400);
|
|
}
|
|
|
|
protected function returnServerError($message){
|
|
$this->returnError($message, 500);
|
|
}
|
|
|
|
/**
|
|
* Return items stored in the bridge
|
|
* @return mixed
|
|
*/
|
|
public function getItems(){
|
|
return $this->items;
|
|
}
|
|
|
|
protected function validateTextValue($value, $pattern = null){
|
|
if(!is_null($pattern)){
|
|
$filteredValue = filter_var($value
|
|
, FILTER_VALIDATE_REGEXP
|
|
, array('options' => array(
|
|
'regexp' => '/^' . $pattern . '$/'
|
|
))
|
|
);
|
|
} else {
|
|
$filteredValue = filter_var($value);
|
|
}
|
|
|
|
if($filteredValue === false)
|
|
return null;
|
|
|
|
return $filteredValue;
|
|
}
|
|
|
|
protected function validateNumberValue($value){
|
|
$filteredValue = filter_var($value, FILTER_VALIDATE_INT);
|
|
|
|
if($filteredValue === false && !empty($value))
|
|
return null;
|
|
|
|
return $filteredValue;
|
|
}
|
|
|
|
protected function validateCheckboxValue($value){
|
|
$filteredValue = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
|
|
|
|
if(is_null($filteredValue))
|
|
return null;
|
|
|
|
return $filteredValue;
|
|
}
|
|
|
|
protected function validateListValue($value, $expectedValues){
|
|
$filteredValue = filter_var($value);
|
|
|
|
if($filteredValue === false)
|
|
return null;
|
|
|
|
if(!in_array($filteredValue, $expectedValues)){ // Check sub-values?
|
|
foreach($expectedValues as $subName => $subValue){
|
|
if(is_array($subValue) && in_array($filteredValue, $subValue))
|
|
return $filteredValue;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
return $filteredValue;
|
|
}
|
|
|
|
protected function validateData(&$data){
|
|
if(!is_array($data))
|
|
return false;
|
|
|
|
foreach($data as $name => $value){
|
|
$registered = false;
|
|
foreach(static::PARAMETERS as $context => $set){
|
|
if(array_key_exists($name, $set)){
|
|
$registered = true;
|
|
if(!isset($set[$name]['type'])){
|
|
$set[$name]['type'] = 'text';
|
|
}
|
|
|
|
switch($set[$name]['type']){
|
|
case 'number':
|
|
$data[$name] = $this->validateNumberValue($value);
|
|
break;
|
|
case 'checkbox':
|
|
$data[$name] = $this->validateCheckboxValue($value);
|
|
break;
|
|
case 'list':
|
|
$data[$name] = $this->validateListValue($value, $set[$name]['values']);
|
|
break;
|
|
default:
|
|
case 'text':
|
|
if(isset($set[$name]['pattern'])){
|
|
$data[$name] = $this->validateTextValue($value, $set[$name]['pattern']);
|
|
} else {
|
|
$data[$name] = $this->validateTextValue($value);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if(is_null($data[$name])){
|
|
echo 'Parameter \'' . $name . '\' is invalid!' . PHP_EOL;
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!$registered)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
protected function setInputs(array $inputs, $queriedContext){
|
|
// Import and assign all inputs to their context
|
|
foreach($inputs as $name => $value){
|
|
foreach(static::PARAMETERS as $context => $set){
|
|
if(array_key_exists($name, static::PARAMETERS[$context])){
|
|
$this->inputs[$context][$name]['value'] = $value;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Apply default values to missing data
|
|
$contexts = array($queriedContext);
|
|
if(array_key_exists('global', static::PARAMETERS)){
|
|
$contexts[] = 'global';
|
|
}
|
|
|
|
foreach($contexts as $context){
|
|
foreach(static::PARAMETERS[$context] as $name => $properties){
|
|
if(isset($this->inputs[$context][$name]['value'])){
|
|
continue;
|
|
}
|
|
|
|
$type = isset($properties['type']) ? $properties['type'] : 'text';
|
|
|
|
switch($type){
|
|
case 'checkbox':
|
|
if(!isset($properties['defaultValue'])){
|
|
$this->inputs[$context][$name]['value'] = false;
|
|
} else {
|
|
$this->inputs[$context][$name]['value'] = $properties['defaultValue'];
|
|
}
|
|
break;
|
|
case 'list':
|
|
if(!isset($properties['defaultValue'])){
|
|
$firstItem = reset($properties['values']);
|
|
if(is_array($firstItem)){
|
|
$firstItem = reset($firstItem);
|
|
}
|
|
$this->inputs[$context][$name]['value'] = $firstItem;
|
|
} else {
|
|
$this->inputs[$context][$name]['value'] = $properties['defaultValue'];
|
|
}
|
|
break;
|
|
default:
|
|
if(isset($properties['defaultValue'])){
|
|
$this->inputs[$context][$name]['value'] = $properties['defaultValue'];
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Copy global parameter values to the guessed context
|
|
if(array_key_exists('global', static::PARAMETERS)){
|
|
foreach(static::PARAMETERS['global'] as $name => $properties){
|
|
if(isset($inputs[$name])){
|
|
$value = $inputs[$name];
|
|
} elseif (isset($properties['value'])){
|
|
$value = $properties['value'];
|
|
} else {
|
|
continue;
|
|
}
|
|
$this->inputs[$queriedContext][$name]['value'] = $value;
|
|
}
|
|
}
|
|
|
|
// Only keep guessed context parameters values
|
|
if(isset($this->inputs[$queriedContext])){
|
|
$this->inputs = array($queriedContext => $this->inputs[$queriedContext]);
|
|
} else {
|
|
$this->inputs = array();
|
|
}
|
|
}
|
|
|
|
protected function getQueriedContext(array $inputs){
|
|
$queriedContexts = array();
|
|
foreach(static::PARAMETERS as $context => $set){
|
|
$queriedContexts[$context] = null;
|
|
foreach($set as $id => $properties){
|
|
if(isset($inputs[$id]) && !empty($inputs[$id])){
|
|
$queriedContexts[$context] = true;
|
|
} elseif(isset($properties['required'])
|
|
&& $properties['required'] === true){
|
|
$queriedContexts[$context] = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(array_key_exists('global', static::PARAMETERS)
|
|
&& $queriedContexts['global'] === false){
|
|
return null;
|
|
}
|
|
unset($queriedContexts['global']);
|
|
|
|
switch(array_sum($queriedContexts)){
|
|
case 0:
|
|
foreach($queriedContexts as $context => $queried){
|
|
if (is_null($queried)){
|
|
return $context;
|
|
}
|
|
}
|
|
return null;
|
|
case 1: return array_search(true, $queriedContexts);
|
|
default: return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Defined datas with parameters depending choose bridge
|
|
* Note : you can define a cache with "setCache"
|
|
* @param array array with expected bridge paramters
|
|
*/
|
|
public function setDatas(array $inputs){
|
|
if(!is_null($this->cache)){
|
|
$this->cache->prepare($inputs);
|
|
$time = $this->cache->getTime();
|
|
if($time !== false && (time() - static::CACHE_TIMEOUT < $time)){
|
|
$this->items = $this->cache->loadData();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if(empty(static::PARAMETERS)){
|
|
if(!empty($inputs)){
|
|
$this->returnClientError('Invalid parameters value(s)');
|
|
}
|
|
|
|
$this->collectData();
|
|
if(!is_null($this->cache)){
|
|
$this->cache->saveData($this->getItems());
|
|
}
|
|
return;
|
|
}
|
|
|
|
if(!$this->validateData($inputs)){
|
|
$this->returnClientError('Invalid parameters value(s)');
|
|
}
|
|
|
|
// Guess the paramter context from input data
|
|
$this->queriedContext = $this->getQueriedContext($inputs);
|
|
if(is_null($this->queriedContext)){
|
|
$this->returnClientError('Required parameter(s) missing');
|
|
} elseif($this->queriedContext === false){
|
|
$this->returnClientError('Mixed context parameters');
|
|
}
|
|
|
|
$this->setInputs($inputs, $this->queriedContext);
|
|
|
|
$this->collectData();
|
|
|
|
if(!is_null($this->cache)){
|
|
$this->cache->saveData($this->getItems());
|
|
}
|
|
}
|
|
|
|
function getInput($input){
|
|
if(!isset($this->inputs[$this->queriedContext][$input]['value'])){
|
|
return null;
|
|
}
|
|
return $this->inputs[$this->queriedContext][$input]['value'];
|
|
}
|
|
|
|
public function getName(){
|
|
return static::NAME;
|
|
}
|
|
|
|
public function getURI(){
|
|
return static::URI;
|
|
}
|
|
|
|
public function setCache(\CacheAbstract $cache){
|
|
$this->cache = $cache;
|
|
}
|
|
|
|
public function debugMessage($text){
|
|
if(!file_exists('DEBUG')) {
|
|
return;
|
|
}
|
|
|
|
$backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
|
|
$calling = $backtrace[2];
|
|
$message = $calling['file'] . ':'
|
|
. $calling['line'] . ' class '
|
|
. get_class($this) . '->'
|
|
. $calling['function'] . ' - '
|
|
. $text;
|
|
|
|
error_log($message);
|
|
}
|
|
|
|
protected function getContents($url
|
|
, $use_include_path = false
|
|
, $context = null
|
|
, $offset = 0
|
|
, $maxlen = null){
|
|
$contextOptions = array(
|
|
'http' => array(
|
|
'user_agent' => ini_get('user_agent')
|
|
)
|
|
);
|
|
|
|
if(defined('PROXY_URL') && $this->useProxy){
|
|
$contextOptions['http']['proxy'] = PROXY_URL;
|
|
$contextOptions['http']['request_fulluri'] = true;
|
|
|
|
if(is_null($context)){
|
|
$context = stream_context_create($contextOptions);
|
|
} else {
|
|
$prevContext = $context;
|
|
if(!stream_context_set_option($context, $contextOptions)){
|
|
$context = $prevContext;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(is_null($maxlen)){
|
|
$content = @file_get_contents($url, $use_include_path, $context, $offset);
|
|
} else {
|
|
$content = @file_get_contents($url, $use_include_path, $context, $offset, $maxlen);
|
|
}
|
|
|
|
if($content === false)
|
|
$this->debugMessage('Cant\'t download ' . $url);
|
|
|
|
// handle compressed data
|
|
foreach($http_response_header as $header){
|
|
if(stristr($header, 'content-encoding')){
|
|
switch(true){
|
|
case stristr($header, 'gzip'):
|
|
$content = gzinflate(substr($content, 10, -8));
|
|
break;
|
|
case stristr($header, 'compress'):
|
|
//TODO
|
|
case stristr($header, 'deflate'):
|
|
//TODO
|
|
case stristr($header, 'brotli'):
|
|
//TODO
|
|
$this->returnServerError($header . '=> Not implemented yet');
|
|
break;
|
|
case stristr($header, 'identity'):
|
|
break;
|
|
default:
|
|
$this->returnServerError($header . '=> Unknown compression');
|
|
}
|
|
}
|
|
}
|
|
|
|
return $content;
|
|
}
|
|
|
|
protected function getSimpleHTMLDOM($url
|
|
, $use_include_path = false
|
|
, $context = null
|
|
, $offset = 0
|
|
, $maxLen = null
|
|
, $lowercase = true
|
|
, $forceTagsClosed = true
|
|
, $target_charset = DEFAULT_TARGET_CHARSET
|
|
, $stripRN = true
|
|
, $defaultBRText = DEFAULT_BR_TEXT
|
|
, $defaultSpanText = DEFAULT_SPAN_TEXT){
|
|
$content = $this->getContents($url, $use_include_path, $context, $offset, $maxLen);
|
|
return str_get_html($content
|
|
, $lowercase
|
|
, $forceTagsClosed
|
|
, $target_charset
|
|
, $stripRN
|
|
, $defaultBRText
|
|
, $defaultSpanText);
|
|
}
|
|
|
|
/**
|
|
* Maintain locally cached versions of pages to avoid multiple downloads.
|
|
* @param url url to cache
|
|
* @param duration duration of the cache file in seconds (default: 24h/86400s)
|
|
* @return content of the file as string
|
|
*/
|
|
public function getSimpleHTMLDOMCached($url
|
|
, $duration = 86400
|
|
, $use_include_path = false
|
|
, $context = null
|
|
, $offset = 0
|
|
, $maxLen = null
|
|
, $lowercase = true
|
|
, $forceTagsClosed = true
|
|
, $target_charset = DEFAULT_TARGET_CHARSET
|
|
, $stripRN = true
|
|
, $defaultBRText = DEFAULT_BR_TEXT
|
|
, $defaultSpanText = DEFAULT_SPAN_TEXT){
|
|
$this->debugMessage('Caching url ' . $url . ', duration ' . $duration);
|
|
|
|
$filepath = __DIR__ . '/../cache/pages/' . sha1($url) . '.cache';
|
|
$this->debugMessage('Cache file ' . $filepath);
|
|
|
|
if(file_exists($filepath) && filectime($filepath) < time() - $duration){
|
|
unlink ($filepath);
|
|
$this->debugMessage('Cached file deleted: ' . $filepath);
|
|
}
|
|
|
|
if(file_exists($filepath)){
|
|
$this->debugMessage('Loading cached file ' . $filepath);
|
|
touch($filepath);
|
|
$content = file_get_contents($filepath);
|
|
} else {
|
|
$this->debugMessage('Caching ' . $url . ' to ' . $filepath);
|
|
$dir = substr($filepath, 0, strrpos($filepath, '/'));
|
|
|
|
if(!is_dir($dir)){
|
|
$this->debugMessage('Creating directory ' . $dir);
|
|
mkdir($dir, 0777, true);
|
|
}
|
|
|
|
$content = $this->getContents($url, $use_include_path, $context, $offset, $maxLen);
|
|
if($content !== false){
|
|
file_put_contents($filepath, $content);
|
|
}
|
|
}
|
|
|
|
return str_get_html($content
|
|
, $lowercase
|
|
, $forceTagsClosed
|
|
, $target_charset
|
|
, $stripRN
|
|
, $defaultBRText
|
|
, $defaultSpanText);
|
|
}
|
|
}
|