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| 1 | <?php |
| 2 | |
| 3 | namespace NewfoldLabs\WP\Module\Performance\Cache; |
| 4 | |
| 5 | use WP_Forge\WP_Htaccess_Manager\htaccess; |
| 6 | |
| 7 | use function WP_Forge\WP_Htaccess_Manager\convertContentToLines; |
| 8 | |
| 9 | /** |
| 10 | * Manage response headers. |
| 11 | */ |
| 12 | class ResponseHeaderManager { |
| 13 | |
| 14 | /** |
| 15 | * The file marker name. |
| 16 | * |
| 17 | * @var string |
| 18 | */ |
| 19 | const MARKER = 'Newfold Headers'; |
| 20 | |
| 21 | /** |
| 22 | * The htaccess manager. |
| 23 | * |
| 24 | * @var htaccess |
| 25 | */ |
| 26 | public $htaccess; |
| 27 | |
| 28 | /** |
| 29 | * Constructor. |
| 30 | */ |
| 31 | public function __construct() { |
| 32 | $this->htaccess = new htaccess( self::MARKER ); |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Parse existing headers. |
| 37 | * |
| 38 | * @return array |
| 39 | */ |
| 40 | public function parse_headers() { |
| 41 | |
| 42 | $headers = array(); |
| 43 | |
| 44 | $content = $this->htaccess->readContent(); |
| 45 | $lines = array_map( 'trim', convertContentToLines( $content ) ); |
| 46 | |
| 47 | array_shift( $lines ); // Remove opening IfModule |
| 48 | array_pop( $lines ); // Remove closing IfModule |
| 49 | |
| 50 | $pattern = '/^Header set (.*) "(.*)"$/'; |
| 51 | |
| 52 | foreach ( $lines as $line ) { |
| 53 | if ( preg_match( $pattern, trim( $line ), $matches ) && isset( $matches[1], $matches[2] ) ) { |
| 54 | $headers[ $matches[1] ] = $matches[2]; |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | return $headers; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Add a header. |
| 63 | * |
| 64 | * @param string $name Header name |
| 65 | * @param string $value Header value |
| 66 | */ |
| 67 | public function add_header( string $name, string $value ) { |
| 68 | $this->set_headers( |
| 69 | array_merge( |
| 70 | $this->parse_headers(), |
| 71 | array( $name => $value ) |
| 72 | ) |
| 73 | ); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Add multiple headers at once. |
| 78 | * |
| 79 | * @param string[] $headers Headers to add. |
| 80 | */ |
| 81 | public function add_headers( array $headers ) { |
| 82 | $headers = array_merge( $this->parse_headers(), $headers ); |
| 83 | $this->set_headers( $headers ); |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Remove a header. |
| 88 | * |
| 89 | * @param string $name Header name |
| 90 | */ |
| 91 | public function remove_header( $name ) { |
| 92 | $headers = $this->parse_headers(); |
| 93 | unset( $headers[ $name ] ); |
| 94 | $this->set_headers( $headers ); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Remove all headers. |
| 99 | */ |
| 100 | public function remove_all_headers() { |
| 101 | $this->set_headers( array() ); |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Set headers. |
| 106 | * |
| 107 | * @param array $headers Headers to set. |
| 108 | */ |
| 109 | public function set_headers( array $headers ) { |
| 110 | |
| 111 | if ( empty( $headers ) ) { |
| 112 | $this->htaccess->removeContent(); |
| 113 | |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | $content = '<IfModule mod_headers.c>' . PHP_EOL; |
| 118 | foreach ( $headers as $key => $value ) { |
| 119 | $content .= "\tHeader set {$key} \"{$value}\"" . PHP_EOL; |
| 120 | } |
| 121 | $content .= '</IfModule>'; |
| 122 | |
| 123 | $this->htaccess->addContent( $content ); |
| 124 | } |
| 125 | } |