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1 | <?php |
2 | |
3 | /* |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; under version 2 |
7 | * of the License (non-upgradable). |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | * |
18 | * Copyright (c) 2002-2008 (original work) Public Research Centre Henri Tudor & University of Luxembourg |
19 | * (under the project TAO & TAO2); |
20 | * 2008-2010 (update and modification) Deutsche Institut für Internationale Pädagogische Forschung |
21 | * (under the project TAO-TRANSFER); |
22 | * 2009-2012 (update and modification) Public Research Centre Henri Tudor |
23 | * (under the project TAO-SUSTAIN & TAO-DEV); |
24 | * |
25 | */ |
26 | |
27 | /** |
28 | * This file contains the TAO Install REST API. |
29 | * |
30 | * It provides services aiming at checking the current configuration |
31 | * of the web serser hosting the API. The following services are implemented. |
32 | * |
33 | * The service to be called is indicated by the top-level 'type' attribute of the |
34 | * sent JSON data structure. It must contain the name of one of the services |
35 | * described below. |
36 | * |
37 | * If a server-side error occurs, a 500 like HTTP status code will be returned with |
38 | * an approriate message in the response body. |
39 | * |
40 | * If the service cannot be chosen from the top-level 'type' attribute, a 404 HTTP |
41 | * status code will be returned with an approriate message in the response body. |
42 | * |
43 | * |
44 | * CheckPHPConfig (POST) |
45 | * --------------------- |
46 | * Inspects the request body to find JSON encoded data that represents |
47 | * a collection of PHP configuration checks. |
48 | * |
49 | * It takes as input a collection of JSON data structures used in the following |
50 | * web services of this API: CheckPHPRuntime, CheckPHPINIValue, CheckPHPExtension, |
51 | * CheckFileSystemComponent. It returns a JSON data structure containing a type |
52 | * equals to 'ReportCollection' with a value attribute containing a collection |
53 | * of reports that are usually used in the list of services seen above. |
54 | * |
55 | * |
56 | * |
57 | * Example of call: |
58 | * {"type": "CheckPHPConfig", |
59 | * "value": [{"type": "CheckPHPExtension", "value": {"name": "gd", "optional": false}}, |
60 | * {"type": "CheckPHPExtension", "value": {"name": "curle", "optional": false}}]} |
61 | * |
62 | * will return: |
63 | * { |
64 | * "type": "ReportCollection", |
65 | * "value": { |
66 | * "type": "PHPExtensionReport", |
67 | * "value": {"status": "valid", "message": "PHP Extension 'gd' is loaded.", "optional": false, "name": "gd"} |
68 | * }, |
69 | * { |
70 | * "type": "PHPExtensionReport", |
71 | * "value": { |
72 | * "status": "unknown", |
73 | * "message": "PHP Extension 'curle' could not be found.", |
74 | * "optional": false, |
75 | * "name": "curle" |
76 | * } |
77 | * } |
78 | * } |
79 | * |
80 | * |
81 | * CheckPHPExtension (POST) |
82 | * ------------------------ |
83 | * Inspects the resquest body to find a JSON encoded data that represents |
84 | * a PHP extension check. With this service, you can know if a PHP Extension is |
85 | * installed or not on the server-side. |
86 | * |
87 | * Example of call: |
88 | * {"type": "CheckPHPExtension", value": {"name": "gd","optional":false}} |
89 | * |
90 | * will return: |
91 | * {"type":"PHPExtensionReport", |
92 | * "value":{"status":"valid","message":"PHP Extension 'gd' is loaded.","optional":false,"name":"gd"}} |
93 | * |
94 | * + The value->status attribute contains 'valid' if the extension is loaded or 'unknown' if the extension is |
95 | * not loaded. |
96 | * |
97 | * |
98 | * CheckPHPDatabaseDriver (POST) |
99 | * ------------------------ |
100 | * Inspects the resquest body to find a JSON encoded data that represents |
101 | * a PHP Database Driver check. With this service, you can know if a PHP Database Driver is |
102 | * installed or not on the server-side. |
103 | * |
104 | * Example of call: |
105 | * {"type": "CheckPHPDatabaseDriver", value": {"name": "mysqli","optional":true}} |
106 | * |
107 | * will return: |
108 | * {"type":"PHPDatabaseDriverReport", |
109 | * "value":{"status":"valid","message":"Database Driver 'mysql' is available.","optional":true,"name":"mysql"}} |
110 | * |
111 | * + The value->status attribute contains 'valid' if the db driver is loaded or 'unknown' if the dbdriver is |
112 | * not loaded. |
113 | * |
114 | * |
115 | * CheckPHPINIValue (POST) |
116 | * ----------------------- |
117 | * Inspects the request body to find a JSON encoded data structure that represents |
118 | * a PHP INI value check. By calling this service, you are able to known if a PHP INI value |
119 | * as the execpted value on the server-side. |
120 | * |
121 | * Example of call: |
122 | * {"type": "CheckPHPINIValue", |
123 | * "value": {"name": "short_open_tag", "value": "0", "optional":false}} |
124 | * |
125 | * will return: |
126 | * {"type":"PHPINIValueReport", |
127 | * "value":{"status":"invalid", |
128 | * "message":"PHP Configuration Option 'short_open_tag' = '1' has an unexpected value.", |
129 | * "expectedValue":"0", |
130 | * "value":"1", |
131 | * "name":"short_open_tag", |
132 | * "optional":false}} |
133 | * |
134 | * + The value->value attribute must be a string. |
135 | * + The value->status attribute contains 'valid' if the expected PHP INI value is found, 'invalid' if it is not found |
136 | * and 'unknown' if no value can be retrieved for requested PHP INI Variable. |
137 | * |
138 | * |
139 | * CheckPHPRuntime (POST) |
140 | * ---------------------- |
141 | * Takes a JSON encoded data structure as input and use it to check |
142 | * if the PHP runtime exists and is between a min and max PHP standardized version number. |
143 | * |
144 | * Example of call: |
145 | * {"type": "CheckPHPRuntime", |
146 | * "value": {"min": "5.3.2", "max": "5.3.9", "optional":false}} |
147 | * |
148 | * will return: |
149 | * {"type":"PHPRuntimeReport", |
150 | * "value":{"status":"valid", |
151 | * "message":"PHP Version (5.3.9) is between 5.3.2 and 5.3.9.", |
152 | * "min":"5.3.2","value":"5.3.9", |
153 | * "max":"5.3.9"}} |
154 | * |
155 | * + The value->status will be 'valid' if the PHP Runtime version is between value->min and value->max, 'invalid' in any |
156 | * other case. |
157 | * + The value->min attribute is not mandatory if the value->max attribute is set. In this case, there is no minimal |
158 | * version. |
159 | * + The value->max attribute is not mandatory if the value->min attribute is set. In this case, theire is no maximal |
160 | * version. |
161 | * |
162 | * |
163 | * CheckFileSystemComponent (POST) |
164 | * ------------------------------- |
165 | * Will look for a JSON encoded data structure as input in the request body. It will |
166 | * use this information to check if a TAO file system component (file or directory) exists |
167 | * and has the correct system rights (read|write|execute). |
168 | * |
169 | * Example of call: |
170 | * {"type": "CheckFileSystemComponent", |
171 | * "value": {"location": "tao/install", "rights": "rw", "optional": true, "name": "tao_install_directory"}} |
172 | * |
173 | * + The value->rights attribute contains a string were 'r' states that the file/directory must be readable, |
174 | * 'w' states that the file/directory must writable and 'x' states that the file/directory must be |
175 | * executable. |
176 | * + The value->location attribute is a relative path from the TAO root directory on your web server to |
177 | * the file you want to test existence and rights. |
178 | * + The value->name attribute is just there for client convenience to distinguish about which file/directory |
179 | * is the result. |
180 | * |
181 | * will return: |
182 | * {"type":"FileSystemComponentReport", |
183 | * "value":["status": "valid", |
184 | * "message": "File system component 'tao_install_directory' is compliant with expected rights (rw).'", |
185 | * "name": "tao_install_directory", |
186 | * "optional": true, |
187 | * "isReadable": true, |
188 | * "isWritable": true, |
189 | * "isExecutable": false]} |
190 | * |
191 | * + The value->status attribute will be 'valid' if the file/directory exists and the expected rights are correct. |
192 | * + The value->status attribute will be 'invalid' if the file/directory exists but the expected rights are incorrect. |
193 | * + The value->status attribute will be 'unknown' if the file/directory does not exist or is not accessible with the |
194 | * rights |
195 | * of the hosts has. |
196 | * |
197 | * |
198 | * CheckCustom (POST) |
199 | * ---------------------- |
200 | * Takes a JSON encoded data structure as input and use it to run a custom |
201 | * check for a particular extension. |
202 | * |
203 | * Example of call: |
204 | * {"type": "CheckCustom","value": {"name": "ModRewrite", "extension" : "tao", "optional": true}} |
205 | * |
206 | * will return: |
207 | * {"type": "CheckCustomReport", |
208 | * "value":{"status": "valid", |
209 | * "message":"Apache mod_rewrite is enabled.", |
210 | * "name":"ModRewrite", |
211 | * "extension":"tao", |
212 | * "optional":true}} |
213 | * |
214 | * + The value->status value depends on the implementation of the requested check. |
215 | * |
216 | * |
217 | * CheckDatabaseConnection (POST) |
218 | * ---------------------------------- |
219 | * Takes a JSON data structure as input and use it to run a Database Connection Check |
220 | * against a particular host, driver, user, password. |
221 | * |
222 | * Example of call: |
223 | * {"type": "CheckDatabaseConnection", |
224 | * "value": {"driver": "mysql", |
225 | * "user": "root", |
226 | * "password": "", |
227 | * "host": "localhost", |
228 | * "optional": false, |
229 | * "overwrite": true, |
230 | * "database": "db1", |
231 | * "name": "db_connection"}} |
232 | * |
233 | * will return: |
234 | * {"type": "DatabaseConnectionReport", |
235 | * "value": {"status": "valid", |
236 | * "message": "Database connection successfully established with driver 'mysql'.", |
237 | * "optional": false, |
238 | * "name": "db_connection"}} |
239 | */ |
240 | |
241 | // phpcs:disable PSR1.Files.SideEffects |
242 | |
243 | use oat\tao\install\api\NotAllowedAPICallException; |
244 | |
245 | // use unicode. |
246 | header('Content-Type:text/html; charset=UTF-8'); |
247 | |
248 | // clear sessions. |
249 | session_start(); |
250 | session_destroy(); |
251 | |
252 | // initialize what we need. |
253 | require_once('init.php'); |
254 | |
255 | /** |
256 | * @param string $rawInput |
257 | * @param string $serviceName |
258 | * @return tao_install_services_Service |
259 | * @throws Exception |
260 | */ |
261 | function getService($rawInput, $serviceName) |
262 | { |
263 | $data = new tao_install_services_Data($rawInput); |
264 | $className = "tao_install_services_{$serviceName}Service"; |
265 | if (!class_exists($className)) { |
266 | throw new Exception("Service does not exist."); |
267 | } |
268 | |
269 | return new $className($data); |
270 | } |
271 | |
272 | try { |
273 | // Deal with the 'CheckProtocol' service first. |
274 | if ($_SERVER['REQUEST_METHOD'] == 'GET' && $_GET['type'] == 'Sync') { |
275 | $data = new tao_install_services_Data(['type' => 'Sync']); |
276 | $service = new tao_install_services_SyncService($data); |
277 | |
278 | // Execute service. |
279 | $service->execute(); |
280 | $result = $service->getResult(); |
281 | $contentType = $result->getMimeType(); |
282 | $charset = $result->getEncoding(); |
283 | header("Content-Type:${contentType}; charset=${charset}", 200); |
284 | echo $result->getContent(); |
285 | die(); |
286 | } |
287 | |
288 | $service = null; |
289 | $data = null; |
290 | if ($_SERVER['REQUEST_METHOD'] == 'GET') { |
291 | $input = $_GET; |
292 | } else { |
293 | $rawInput = file_get_contents('php://input'); |
294 | $input = @json_decode($rawInput, true); |
295 | } |
296 | |
297 | if ($input == null) { |
298 | throw new tao_install_api_MalformedRequestBodyException("Unable to parse request body as valid JSON."); |
299 | } elseif (!isset($input['type']) || empty($input['type'])) { |
300 | throw new tao_install_api_InvalidAPICallException("No 'type' attribute found in request body."); |
301 | } else { |
302 | if ($_SERVER['REQUEST_METHOD'] == 'GET') { |
303 | switch ($input['type']) { |
304 | case 'CheckPHPConfig': |
305 | $service = getService(json_encode($input), $input['type']); |
306 | break; |
307 | |
308 | default: |
309 | // Unknown service. |
310 | throw new tao_install_services_UnknownServiceException($input['type']); |
311 | break; |
312 | } |
313 | } else { |
314 | switch ($input['type']) { |
315 | case 'Install': |
316 | if (tao_install_utils_System::isTAOInstalled() && !tao_install_utils_System::isTAOInDebugMode()) { |
317 | throw new NotAllowedAPICallException('The requested service is forbidden.'); |
318 | } |
319 | |
320 | $service = getService($rawInput, $input['type']); |
321 | break; |
322 | |
323 | case 'CheckPHPConfig': |
324 | case 'CheckPHPRuntime': |
325 | case 'CheckPHPINIValue': |
326 | case 'CheckPHPExtension': |
327 | case 'CheckPHPDatabaseDriver': |
328 | case 'CheckFileSystemComponent': |
329 | case 'CheckDatabaseConnection': |
330 | case 'CheckTAOForgeConnection': |
331 | case 'CheckCustom': |
332 | $service = getService($rawInput, $input['type']); |
333 | break; |
334 | |
335 | default: |
336 | // Unknown service. |
337 | throw new tao_install_services_UnknownServiceException($input['type']); |
338 | break; |
339 | } |
340 | } |
341 | |
342 | // Execute service. |
343 | $service->execute(); |
344 | $result = $service->getResult(); |
345 | $contentType = $result->getMimeType(); |
346 | $charset = $result->getEncoding(); |
347 | header("Content-Type:${contentType}; charset=${charset}", 200); |
348 | echo $result->getContent(); |
349 | } |
350 | } catch (tao_install_services_UnknownServiceException $e) { |
351 | $serviceName = $e->getServiceName(); |
352 | header('HTTP/1.0 404 Not Found'); |
353 | header('Content-Type:text; charset=UTF-8'); |
354 | echo "The requested service '${serviceName}' does not exist."; |
355 | } catch (tao_install_api_MalformedRequestBodyException $e) { |
356 | header("HTTP/1.0 400 Bad Request"); |
357 | header("Content-Type:text; charset=UTF-8"); |
358 | echo "Request body could not be parsed as valid JSON.\n"; |
359 | echo "Is your JSON data correctly formatted? You can check it on http://www.jslint.com, the JavaScript" |
360 | . " Quality Tool.\n"; |
361 | echo "Make also sure your request body is UTF-8 encoded."; |
362 | } catch (tao_install_api_InvalidAPICallException $e) { |
363 | header("HTTP/1.0 400 Bad Request"); |
364 | header("Content-Type:text; charset=UTF-8"); |
365 | echo $e->getMessage(); |
366 | } catch (NotAllowedAPICallException $e) { |
367 | header('HTTP/1.0 403 Forbidden'); |
368 | header('Content-Type:text; charset=UTF-8'); |
369 | echo "Error: " . $e->getMessage(); |
370 | } catch (Exception $e) { |
371 | header('HTTP/1.0 500 Internal Server Error'); |
372 | header('Content-Type:text; charset=UTF-8'); |
373 | echo "Fatal error: " . $e->getMessage(); |
374 | } |
375 | $_SESSION = []; |
376 | @session_destroy(); |