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| 1 | <?php |
| 2 | /** |
| 3 | * Helper functions that are called from API even when module is inactive should be added here. |
| 4 | * This file will be included in module-extras.php. |
| 5 | * |
| 6 | * @package jetpack |
| 7 | */ |
| 8 | |
| 9 | if ( ! function_exists( 'jetpack_verification_extract_code' ) ) { |
| 10 | /** |
| 11 | * Extract a site verification code from a meta tag. |
| 12 | * |
| 13 | * @since 16.3 |
| 14 | * |
| 15 | * @param string $code Verification meta tag. |
| 16 | * @return string|false Extracted code, or false when none is found. |
| 17 | */ |
| 18 | function jetpack_verification_extract_code( $code ) { |
| 19 | $pattern = '/content=["\']?([^"\' ]*)["\' ]/is'; |
| 20 | preg_match( $pattern, $code, $match ); |
| 21 | |
| 22 | return $match ? rawurldecode( $match[1] ) : false; |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | if ( ! function_exists( 'jetpack_verification_validate_code' ) ) { |
| 27 | /** |
| 28 | * Validate and normalize a site verification code. |
| 29 | * |
| 30 | * @since 16.3 |
| 31 | * |
| 32 | * @param mixed $code Verification code or meta tag. |
| 33 | * @return string|false Normalized code, or false when invalid. |
| 34 | */ |
| 35 | function jetpack_verification_validate_code( $code ) { |
| 36 | if ( ! is_scalar( $code ) ) { |
| 37 | return false; |
| 38 | } |
| 39 | |
| 40 | // Allow printable ASCII except characters that can delimit HTML attributes or tags. |
| 41 | $code_pattern = '/^(?!.*[<>"\'])[!-~]+$/'; |
| 42 | $code = trim( (string) $code ); |
| 43 | |
| 44 | if ( '' === $code ) { |
| 45 | return ''; |
| 46 | } |
| 47 | |
| 48 | // Parse html meta tag if it does not look like a valid code. |
| 49 | if ( ! preg_match( $code_pattern, $code ) ) { |
| 50 | $code = jetpack_verification_extract_code( $code ); |
| 51 | } |
| 52 | |
| 53 | $code = trim( (string) $code ); |
| 54 | if ( '' === $code || ! preg_match( $code_pattern, $code ) ) { |
| 55 | return false; |
| 56 | } |
| 57 | |
| 58 | return substr( $code, 0, 100 ); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | if ( ! function_exists( 'jetpack_verification_validate_codes' ) ) { |
| 63 | /** |
| 64 | * Validate jetpack verification codes. |
| 65 | * |
| 66 | * @since 16.3 |
| 67 | * |
| 68 | * @param array $verification_services_codes - array of verification codes. |
| 69 | * @return array Validated verification codes. |
| 70 | */ |
| 71 | function jetpack_verification_validate_codes( $verification_services_codes ) { |
| 72 | foreach ( $verification_services_codes as $key => $code ) { |
| 73 | $code = jetpack_verification_validate_code( $code ); |
| 74 | $code = false === $code ? '' : $code; |
| 75 | |
| 76 | /** |
| 77 | * Fire after each Verification code was validated. |
| 78 | * |
| 79 | * @module verification-tools |
| 80 | * |
| 81 | * @since 3.0.0 |
| 82 | * |
| 83 | * @param string $key Verification service name. |
| 84 | * @param string $code Verification service code provided in field in the Tools menu. |
| 85 | */ |
| 86 | do_action( 'jetpack_site_verification_validate', $key, $code ); |
| 87 | |
| 88 | $verification_services_codes[ $key ] = $code; |
| 89 | } |
| 90 | return $verification_services_codes; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | if ( ! function_exists( 'jetpack_verification_validate' ) ) { |
| 95 | /** |
| 96 | * Validate jetpack verification codes. |
| 97 | * |
| 98 | * @param array $verification_services_codes - array of verification codes. |
| 99 | * @return array Validated verification codes. |
| 100 | */ |
| 101 | function jetpack_verification_validate( $verification_services_codes ) { |
| 102 | return jetpack_verification_validate_codes( $verification_services_codes ); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | if ( ! function_exists( 'jetpack_verification_get_code' ) ) { |
| 107 | /** |
| 108 | * Return the code we're trying to verify after decoding. |
| 109 | * |
| 110 | * @param string $code - the code we need to parse. |
| 111 | * @return string|false Extracted code, or false when none is found. |
| 112 | */ |
| 113 | function jetpack_verification_get_code( $code ) { |
| 114 | return jetpack_verification_extract_code( $code ); |
| 115 | } |
| 116 | } |