diff options
Diffstat (limited to 'endpoints/rest.php')
| -rw-r--r-- | endpoints/rest.php | 159 |
1 files changed, 140 insertions, 19 deletions
diff --git a/endpoints/rest.php b/endpoints/rest.php index e00d27555..6f9efc1e8 100644 --- a/endpoints/rest.php +++ b/endpoints/rest.php @@ -11,10 +11,68 @@ * @link http://elgg.org/ */ + + + + + /* + + Elgg API system +A brief specification: internal only + +NB: this is a loose specification, and as such some holes or shortcomings may become evident in +implementation. Therefore, feel free to adjust as necessary, bearing in mind the goals, which +are unmovable ... + +Goals: an extensible, two-way API that can be used to easily code secure client applications +on a variety of networked systems, whether web or application-based. The results should be available, +at the very least, in JSON, serialised PHP, XML and CSV, but the output formats should also be +extensible by plugins in a documented way. Similarly, plugins must be able to add new function calls, +in a similar way to how they register events or enable actions. + + + + + + +On release, we will need to provide simple client libraries for PHP, .NET, C, Java and (although this +can hopefully be outsourced to Kevin or similar) Ruby on Rails. Additionally, Django, vanilla Python +and Perl libraries would be a bonus, although not required. + +Brief implementation requirements: A set of procedural functions. If possible, the output should +use the existing views system, creating a new base view set for xml, json, csv and php. That way other +output formats can be specified simply by changing the &view URL parameter, and added / extended by plugins. +(It would also allow RSS output pretty much for free for certain types of data.) On failure, a friendly +message should be returned in a way that can be read by the client software. + +These functions should be made available in a simple api.php module within engine/lib.php, without the use of +any external libraries. If an external library really must be used, ensure that it has a compatible license +and can be used on all systems where Elgg can be installed, including Apache for Windows and Apache-compatible +web servers. + +When a plugin or core software module registers an API call, it should reference a function name, the +parameters it requires, and an English description of the call. A special API call – and internal function - +should return a list of enabled calls, for the use of client applications and internal help pages respectively. + +As one application of the API is as a back-end for AJAX applications, the API endpoint should check $_SESSION +for logged in user information before checking for any other kind of login data. This way the browser can +simply make an asynchronous callback request, allowing for many very interesting Javascript applications. +In an ideal world, client applications should not need a special API key. This is because an application would +have to install a new key for each installed Elgg site, which is not preferable, as it has a serious user +experience hit (before the user can use a new client software on a particular install, they have to go to +their account settings and obtain something that to them looks like a string of gobbledygook). If possible, +all the client application should need is a valid username and password. + +Using a $CONFIG configuration option, site admins should be able to shut down the entire API system if +required, or disallow the $_SESSION authentication method. + + */ + + // Include required files require_once('../engine/start.php'); - global $CONFIG, $ApiEnvironment; - + global $CONFIG; + // Register the error handler error_reporting(E_ALL); set_error_handler('__php_api_error_handler'); @@ -22,12 +80,18 @@ // Register a default exception handler set_exception_handler('__php_api_exception_handler'); + // Check to see if the api is available + if ((isset($CONFIG->disable_api)) && ($CONFIG->disable_api == true)) + throw new ConfigurationException("Sorry, API access has been disabled by the administrator."); + + + + // Get parameter variables $format = get_input('format', 'php'); $method = get_input('method'); $result = null; - // See if we have a session /** * If we have a session then we can assume that this is being called by AJAX from @@ -37,7 +101,68 @@ */ if (!isloggedin()) { - // Get api header + //$CONFIG->api_header = get_and_validate_api_headers(); // Get api header + //$CONFIG->api_user = get_api_user($CONFIG->api_header->api_key); // Pull API user details + + + + + + + + + + + + } + else + { + // User is logged in, just execute + + + + + } + + // Finally output + if (!($result instanceof GenericResult)) + throw new APIException("API Result is of an unknown type, this should never happen."); + + // Output the result + echo output_result($result, $format); + + + + + + + + + + + + + + + + + + + + + + + + // See if we have a session + /** + * If we have a session then we can assume that this is being called by AJAX from + * within an already logged on browser. + * + * NB. This may be a gaping security hole, but hey ho. + */ +// if (!isloggedin()) +// { +/* // Get api header $api_header = get_and_validate_api_headers(); $ApiEnvironment->api_header = $api_header; @@ -94,22 +219,18 @@ } else throw new SecurityException("Invalid or missing API Key.",ErrorResult::$RESULT_FAIL_APIKEY_INVALID); - } - else - { - // Set site environment - $ApiEnvironment->site_id = $CONFIG->site_id; - - // User is logged in, just execute - if (isset($params['auth_token'])) $token = $params['auth_token']; - $result = execute_method($method, $params, $token); - } + }*/ +// else +// { +// // Set site environment +// $ApiEnvironment->site_id = $CONFIG->site_id; +// +// // User is logged in, just execute +// if (isset($params['auth_token'])) $token = $params['auth_token']; +// $result = execute_method($method, $params, $token); +// } - // Finally output - if (!($result instanceof GenericResult)) - throw new APIException("API Result is of an unknown type, this should never happen."); - - output_result($result, $format); + ?>
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