bludit/bl-plugins/api/plugin.php

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<?php
class pluginAPI extends Plugin {
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private $method;
public function init()
{
// Generate the API Token
$token = md5( uniqid().time().DOMAIN );
$this->dbFields = array(
'token'=>$token, // API Token
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'numberOfItems'=>15 // Amount of items to return
);
}
public function form()
{
global $L;
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$html = '<div class="alert alert-primary" role="alert">';
$html .= $this->description();
$html .= '</div>';
$html .= '<div>';
$html .= '<label>'.$L->get('API Token').'</label>';
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$html .= '<input name="token" type="text" value="'.$this->getValue('token').'">';
$html .= '<span class="tip">'.$L->get('This token is for read only and is regenerated every time you install the plugin').'</span>';
$html .= '</div>';
$html .= '<div>';
$html .= '<label>'.$L->get('Amount of pages').'</label>';
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$html .= '<input id="jsnumberOfItems" name="numberOfItems" type="text" value="'.$this->getValue('numberOfItems').'">';
$html .= '<span class="tip">'.$L->get('This is the maximum of pages to return when you call to').'</span>';
$html .= '</div>';
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return $html;
}
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// API HOOKS
// ----------------------------------------------------------------------------
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public function beforeAll()
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{
global $url;
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global $pages;
global $users;
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// CHECK URL
// ------------------------------------------------------------
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$URI = $this->webhook('api', $returnsAfterURI=true, $fixed=false);
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if ($URI===false) {
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return false;
}
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// METHOD
// ------------------------------------------------------------
$method = $this->getMethod();
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// METHOD INPUTS
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// ------------------------------------------------------------
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$inputs = $this->getMethodInputs();
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if ( empty($inputs) ) {
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$this->response(404, 'Not Found', array('message'=>'Missing method inputs.'));
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}
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// ENDPOINT PARAMETERS
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// ------------------------------------------------------------
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$parameters = $this->getEndpointParameters($URI);
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if ( empty($parameters) ) {
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$this->response(404, 'Not Found', array('message'=>'Missing endpoint parameters.'));
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}
// API TOKEN
// ------------------------------------------------------------
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// Token from the plugin, the user can change it on the settings of the plugin
$tokenAPI = $this->getValue('token');
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// Check empty token
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if (empty($inputs['token'])) {
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$this->response(404, 'Not Found', array('message'=>'Missing API token.'));
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}
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// Check if the token is valid
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if ($inputs['token']!==$tokenAPI) {
$this->response(401, 'Unauthorized', array('message'=>'Invalid API token.'));
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}
// AUTHENTICATION TOKEN
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// ------------------------------------------------------------
$writePermissions = false;
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if ( !empty($inputs['authentication']) ) {
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// Get the user with the authentication token, FALSE if doesn't exit
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$username = $users->getByAuthToken($inputs['authentication']);
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if ($username!==false) {
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// Get the object user to check the role
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$user = $users->getUser($username);
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if (($user->role()=='admin') && ($user->enabled())) {
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// Loggin the user to create the session
$login = new Login();
$login->setLogin($username, 'admin');
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// Enable write permissions
$writePermissions = true;
}
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}
}
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// ENDPOINTS
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// ------------------------------------------------------------
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// (GET) /api/pages
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if ( ($method==='GET') && ($parameters[0]==='pages') && empty($parameters[1]) ) {
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$data = $this->getPages();
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}
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// (GET) /api/pages/<key>
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elseif ( ($method==='GET') && ($parameters[0]==='pages') && !empty($parameters[1]) ) {
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$pageKey = $parameters[1];
$data = $this->getPage($pageKey);
}
// (PUT) /api/pages/<key>
elseif ( ($method==='PUT') && ($parameters[0]==='pages') && !empty($parameters[1]) && $writePermissions ) {
$pageKey = $parameters[1];
$data = $this->editPage($pageKey, $inputs);
}
// (DELETE) /api/pages/<key>
elseif ( ($method==='DELETE') && ($parameters[0]==='pages') && !empty($parameters[1]) && $writePermissions ) {
$pageKey = $parameters[1];
$data = $this->deletePage($pageKey);
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}
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// (POST) /api/pages
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elseif ( ($method==='POST') && ($parameters[0]==='pages') && empty($parameters[1]) && $writePermissions ) {
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$data = $this->createPage($inputs);
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}
else {
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$this->response(401, 'Unauthorized', array('message'=>'Access denied or invalid endpoint.'));
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}
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$this->response(200, 'OK', $data);
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}
// PRIVATE METHODS
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// ----------------------------------------------------------------------------
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private function getMethod()
{
// METHODS
// ------------------------------------------------------------
// GET
// POST
// PUT
// DELETE
$this->method = $_SERVER['REQUEST_METHOD'];
return $this->method;
}
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private function getMethodInputs()
{
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switch($this->method) {
case "POST":
$inputs = $_POST;
break;
case "GET":
case "DELETE":
$inputs = $_GET;
break;
case "PUT":
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$inputs = '';
break;
default:
$inputs = json_encode(array());
break;
}
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// Try to get raw/json data
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if (empty($inputs)) {
$inputs = file_get_contents('php://input');
}
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return $this->cleanInputs($inputs);
}
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// Returns an array with key=>value
// If the content is JSON is parsed to array
private function cleanInputs($inputs)
{
$tmp = array();
if (is_array($inputs)) {
foreach ($inputs as $key=>$value) {
$tmp[$key] = Sanitize::html($value);
}
} elseif (is_string($inputs)) {
$tmp = json_decode($inputs, true);
if (json_last_error()!==JSON_ERROR_NONE) {
$tmp = array();
}
}
return $tmp;
}
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private function getEndpointParameters($URI)
{
// ENDPOINT Parameters
// ------------------------------------------------------------
// /api/pages | GET | returns all pages
// /api/pages/{key} | GET | returns the page with the {key}
// /api/pages | POST | create a new page
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$URI = ltrim($URI, '/');
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$parameters = explode('/', $URI);
// Sanitize parameters
foreach ($parameters as $key=>$value) {
$parameters[$key] = Sanitize::html($value);
}
return $parameters;
}
private function response($code=200, $message='OK', $data=array())
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{
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header('HTTP/1.1 '.$code.' '.$message);
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header('Access-Control-Allow-Origin: *');
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header('Content-Type: application/json');
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$json = json_encode($data);
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exit($json);
}
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private function getPages()
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{
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global $pages;
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$onlyPublished = true;
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$numberOfItems = $this->getValue('numberOfItems');
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$pageNumber = 1;
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$list = $pages->getList($pageNumber, $numberOfItems, $onlyPublished);
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$tmp = array(
'status'=>'0',
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'message'=>'List of pages, amount of items: '.$numberOfItems,
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'data'=>array()
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);
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// Get keys of pages
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foreach ($list as $pageKey) {
try {
// Create the page object from the page key
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$page = new Page($pageKey);
array_push($tmp['data'], $page->json( $returnsArray=true ));
} catch (Exception $e) {
// Continue
}
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}
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return $tmp;
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}
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private function getPage($key)
{
try {
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$page = new Page($key);
return array(
'status'=>'0',
'message'=>'Page filtered by key: '.$key,
'data'=>$page->json( $returnsArray=true )
);
} catch (Exception $e) {
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return array(
'status'=>'1',
'message'=>'Page not found.'
);
}
}
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private function createPage($args)
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{
// Unsanitize content because all values are sanitized
if (isset($args['content'])) {
$args['content'] = Sanitize::htmlDecode($args['content']);
}
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// This function is defined on functions.php
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$key = createPage($args);
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if ($key===false) {
return array(
'status'=>'1',
'message'=>'Error trying to create the new page.'
);
}
return array(
'status'=>'0',
'message'=>'Page created.',
'data'=>array('key'=>$key)
);
}
private function editPage($key, $args)
{
// Unsanitize content because all values are sanitized
if (isset($args['content'])) {
$args['content'] = Text::htmlDecode($args['content']);
}
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$args['key'] = $key;
$newKey = editPage($args);
if ($newKey===false) {
return array(
'status'=>'1',
'message'=>'Error trying to edit the page.'
);
}
return array(
'status'=>'0',
'message'=>'Page edited.',
'data'=>array('key'=>$newKey)
);
}
private function deletePage($key)
{
if (deletePage($key)) {
return array(
'status'=>'0',
'message'=>'Page deleted.'
);
}
return array(
'status'=>'1',
'message'=>'Error trying to delete the page.'
);
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}
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}