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Diffstat (limited to 'web/lib/aurjson.class.php')
| -rw-r--r-- | web/lib/aurjson.class.php | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/web/lib/aurjson.class.php b/web/lib/aurjson.class.php new file mode 100644 index 00000000..ce59ed7d --- /dev/null +++ b/web/lib/aurjson.class.php @@ -0,0 +1,145 @@ +<?php +/** + * AurJSON + * + * This file contains the AurRPC remote handling class + * @author eliott <eliott@cactuswax.net> + * @version $Id$ + * @copyright cactuswax.net, 12 October, 2007 + * @package rpc + **/ + +/** + * This class defines a remote interface for fetching data + * from the AUR using JSON formatted elements. + * @package rpc + * @subpackage classes + **/ +class AurJSON { + private $dbh = false; + private $exposed_methods = array('search','info'); + + /** + * Returns the usage data for the exposed json api. + * @return string The usage data in plain format. + **/ + public function usage() { + $usage = 'The methods currently allowed are: <br />'; + $usage .= '<ul>'; + foreach ($this->exposed_methods as $methodname) { + $usage .= "<li>{$methodname}</li>"; + } + $usage .= '</ul><br />'; + $usage .= 'Each method requires the following HTTP GET syntax:<br />'; + $usage .= ' type=_methodname_&arg=_data_ <br /><br />'; + $usage .= 'Where _methodname_ is the name of an exposed method, and _data_ is the data supplied as part of the call.<br />'; + $usage .= 'The _ characters are included only in this example as placeholders. Do not use them in an actual query.<br /><br />'; + $usage .= 'If you need jsonp type callback specification, you can provide an additional variable "callback".<br />'; + $usage .= 'Example URL: <br /> http://aur-url/rpc.php?type=search&args=foobar&callback=jsonp1192244621103'; + return $usage; + } + + /** + * Handles post data, and routes the request. + * @param string $post_data The post data to parse and handle. + * @return string The JSON formatted response data. + **/ + public function handle($http_data) { + // set content type header to json + //header('content-type: application/json'); + // set up db connection. + $this->dbh = db_connect(); + + // handle error states + if ( !isset($http_data['type']) || !isset($http_data['arg']) ) { + return $this->json_error('No request type/data specified.'); + } + + // do the routing + if ( in_array($http_data['type'], $this->exposed_methods) ) { + // ugh. this works. I hate you php. + $json = call_user_func_array(array(&$this,$http_data['type']),$http_data['arg']); + // allow rpc callback for XDomainAjax + if ( isset($http_data['callback']) ) { + return $http_data['callback'] . "({$json})"; + } + else { + return $json; + } + } + else { + return $this->json_error('Incorrect request type specified.'); + } + } + + /** + * Returns a JSON formatted error string. + * + * @param $msg The error string to return + * @return mixed A json formatted error response. + **/ + private function json_error($msg){ + return $this->json_results('error',$msg); + } + + /** + * Returns a JSON formatted result data. + * @param $type The response method type. + * @param $data The result data to return + * @return mixed A json formatted result response. + **/ + private function json_results($type,$data){ + return json_encode( array('type' => $type, 'results' => $data) ); + } + + /** + * Performs a fulltext mysql search of the package database. + * @param $keyword_string A string of keywords to search with. + * @return mixed Returns an array of package matches. + **/ + private function search($keyword_string) { + $query = sprintf( + "SELECT Name,ID FROM Packages WHERE MATCH(Name,Description) AGAINST('%s' IN BOOLEAN MODE)", + mysql_real_escape_string($keyword_string, $this->dbh) ); + + $result = db_query($query, $this->dbh); + + if ( $result && (mysql_num_rows($result) > 0) ) { + $search_data = array(); + while ( $row = mysql_fetch_assoc($result) ) { + $elem = array( + 'Name' => $row['Name'], + 'ID' => $row['ID'] ); + array_push($search_data,$elem); + } + mysql_free_result($result); + return $this->json_results('search',$search_data); + } + else { + return $this->json_error('No results found'); + } + } + + /** + * Returns the info on a specific package id. + * @param $package_id The ID of the package to fetch info. + * @return mixed Returns an array of value data containing the package data + **/ + private function info($package_id) { + // using sprintf to coerce the package_id to an int + // should handle sql injection issues, since sprintf will + // bork if not an int, or convert the string to a number + $query = sprintf("SELECT ID,Name,Version,Description,URL,URLPath,License,NumVotes,OutOfDate,Safe FROM Packages WHERE ID=%d",$package_id); + $result = db_query($query, $this->dbh); + + if ( $result && (mysql_num_rows($result) > 0) ) { + $row = mysql_fetch_assoc($result); + mysql_free_result($result); + return $this->json_results('info',$row); + } + else { + return $this->json_error('No result found'); + } + } +} +?> |