1 | <?php |
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2 | /** |
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3 | * Security. |
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4 | * |
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5 | * @author Pronamic <[email protected]> |
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6 | * @copyright 2005-2021 Pronamic |
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7 | * @license GPL-3.0-or-later |
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8 | * @package Pronamic\WordPress\Pay |
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9 | */ |
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10 | |||
11 | namespace Pronamic\WordPress\Pay\Gateways\IDealAdvancedV3; |
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12 | |||
13 | /** |
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14 | * Title: Security |
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15 | * Description: |
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16 | * Copyright: 2005-2021 Pronamic |
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17 | * Company: Pronamic |
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18 | * |
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19 | * @author Remco Tolsma |
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20 | * @version 2.0.0 |
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21 | * @since 1.0.0 |
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22 | */ |
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23 | class Security { |
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24 | /** |
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25 | * Indicator for the begin of an certificate |
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26 | * |
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27 | * @var string |
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28 | */ |
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29 | const CERTIFICATE_BEGIN = '-----BEGIN CERTIFICATE-----'; |
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30 | |||
31 | /** |
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32 | * Indicator for the end of an certificate |
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33 | * |
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34 | * @var string |
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35 | */ |
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36 | const CERTIFICATE_END = '-----END CERTIFICATE-----'; |
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37 | |||
38 | /** |
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39 | * Get the sha1 fingerprint from the specified certificate |
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40 | * |
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41 | * @param string $certificate Certificate. |
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42 | * @return string|null Fingerprint or `null` on failure. |
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43 | */ |
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44 | public static function get_sha_fingerprint( $certificate ) { |
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45 | return self::get_fingerprint( $certificate, 'sha1' ); |
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46 | } |
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47 | |||
48 | /** |
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49 | * Get the md5 fingerprint from the specified certificate |
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50 | * |
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51 | * @param string $certificate Certificate. |
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52 | * @return string|null Fingerprint or `null` on failure. |
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53 | */ |
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54 | public static function get_md5_fingerprint( $certificate ) { |
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55 | return self::get_fingerprint( $certificate, 'md5' ); |
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56 | } |
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57 | |||
58 | /** |
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59 | * Get the fingerprint from the specified certificate |
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60 | * |
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61 | * @param string $certificate Certificate. |
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62 | * @param string|null $hash Hashing algorithm. |
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63 | * @return string|null Fingerprint or `null` on failure. |
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64 | */ |
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65 | public static function get_fingerprint( $certificate, $hash = null ) { |
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66 | $fingerprint = null; |
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67 | |||
68 | // The openssl_x509_read() function will throw an warning if the supplied |
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69 | // parameter cannot be coerced into an X509 certificate |
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70 | // @codingStandardsIgnoreStart |
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71 | $resource = @openssl_x509_read( $certificate ); |
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72 | // @codingStandardsIgnoreEnd |
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73 | |||
74 | if ( false === $resource ) { |
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75 | return null; |
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76 | } |
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77 | |||
78 | $output = null; |
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79 | |||
80 | $result = openssl_x509_export( $resource, $output ); |
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81 | |||
82 | if ( false === $result ) { |
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83 | return null; |
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84 | } |
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85 | |||
86 | $output = str_replace( self::CERTIFICATE_BEGIN, '', (string) $output ); |
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87 | $output = str_replace( self::CERTIFICATE_END, '', $output ); |
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88 | |||
89 | // Base64 decode. |
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90 | // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode |
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91 | $fingerprint = base64_decode( $output ); |
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92 | |||
93 | // Hash. |
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94 | if ( null !== $hash ) { |
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95 | $fingerprint = hash( $hash, $fingerprint ); |
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96 | } |
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97 | |||
98 | /* |
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99 | * Uppercase |
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100 | * |
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101 | * Cannot find private certificate file with fingerprint: b4845cb5cbcee3e1e0afef2662552a2365960e72 |
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102 | * (Note: Some acquirers only accept fingerprints in uppercase. Make the value of "KeyName" in your XML data uppercase.). |
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103 | * https://www.ideal-checkout.nl/simulator/ |
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104 | * |
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105 | * @since 1.1.11 |
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106 | */ |
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107 | $fingerprint = strtoupper( $fingerprint ); |
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108 | |||
109 | return $fingerprint; |
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110 | } |
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111 | } |
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112 |