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1 | <?php |
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2 | |||
3 | namespace ByJG\RestServer; |
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4 | |||
5 | use ByJG\AnyDataset\Model\ObjectHandler; |
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6 | use ByJG\Util\XmlUtil; |
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7 | |||
8 | class ServiceHandler implements HandlerInterface |
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9 | { |
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10 | |||
11 | protected $output = Output::JSON; |
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12 | |||
13 | public function getOutput() |
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14 | { |
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15 | return $this->output; |
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16 | } |
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17 | |||
18 | public function setOutput($output) |
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19 | { |
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20 | // Check if output is set |
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21 | if ($output != Output::JSON && $output != Output::XML && $output != Output::CSV && $output != Output::RDF) { |
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22 | throw new \Exception('Invalid output format. Valid are XML, JSON or CSV'); |
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23 | } |
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24 | |||
25 | $this->output = $output; |
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26 | } |
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27 | |||
28 | public function setHeader() |
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29 | { |
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30 | switch ($this->getOutput()) { |
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31 | case Output::JSON: |
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32 | header('Content-Type: application/json'); |
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33 | break; |
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34 | |||
35 | case Output::RDF: |
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36 | header('Content-Type: application/rdf+xml'); |
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37 | break; |
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38 | |||
39 | case Output::XML: |
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40 | header('Content-Type: text/xml'); |
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41 | break; |
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42 | |||
43 | default: |
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44 | header('Content-Type: text/plain'); |
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45 | break; |
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46 | } |
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47 | } |
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48 | |||
49 | /** |
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50 | * CORS - Better do that in your http server, but you can enable calling this |
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51 | */ |
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52 | public function setHeaderCors() |
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53 | { |
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54 | header('Access-Control-Allow-Origin: *'); |
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55 | header("Access-Control-Allow-Headers: X-API-KEY, Origin, X-Requested-With, Content-Type, Accept, Access-Control-Request-Method"); |
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56 | header("Access-Control-Allow-Methods: GET, POST, OPTIONS, PUT, DELETE"); |
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57 | $method = $_SERVER['REQUEST_METHOD']; |
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58 | if ($method == "OPTIONS") { |
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59 | return false; |
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60 | } |
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61 | return true; |
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62 | } |
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63 | |||
64 | public function execute(ServiceAbstract $instance) |
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65 | { |
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66 | $root = null; |
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67 | $annotationPrefix = 'object'; |
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68 | if ($this->getOutput() == Output::RDF) { |
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69 | $xmlDoc = XmlUtil::CreateXmlDocument(); |
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70 | $root = XmlUtil::CreateChild($xmlDoc, "rdf:RDF", "", "http://www.w3.org/1999/02/22-rdf-syntax-ns#"); |
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71 | XmlUtil::AddNamespaceToDocument($root, "rdfs", "http://www.w3.org/2000/01/rdf-schema#"); |
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72 | $annotationPrefix = 'rdf'; |
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73 | } |
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74 | |||
75 | $dom = $instance->getResponse()->getResponseBag()->process($root, $annotationPrefix); |
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76 | |||
77 | switch ($this->getOutput()) { |
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78 | case Output::JSON: |
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79 | return ObjectHandler::xml2json($dom); |
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80 | |||
81 | case Output::XML: |
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82 | case Output::RDF: |
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83 | return $dom->saveXML(); |
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84 | |||
85 | case Output::CSV: |
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86 | $array = XmlUtil::xml2Array($dom); |
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87 | |||
88 | $return = ""; |
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89 | foreach ((array) $array as $line) { |
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90 | foreach ((array) $line as $field) { |
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91 | $return .= "\"" . str_replace('"', '\\"', (is_array($field) ? json_encode($field) : $field)) . "\";"; |
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92 | } |
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93 | $return .= "\n"; |
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94 | } |
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95 | return $return; |
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96 | } |
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97 | } |
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98 | } |
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99 |
Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: