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| 1 | <?php |
| 2 | /** |
| 3 | * Blog Privacy Settings |
| 4 | * |
| 5 | * Controls for Blog Privacy are spread out over several different places. |
| 6 | * * WordPress Core (all sites: `blog_privacy_selector`, `blog_public`) |
| 7 | * * wpcomsh (WoA: Private Site feature) |
| 8 | * * WP.com (simple: `blog_public`) |
| 9 | * * This jetpack-mu-wpcom feature (WoA, simple: `wpcom_data_sharing_opt_out` robots.txt user agent blocks) |
| 10 | * |
| 11 | * @package automattic/jetpack-mu-wpcom |
| 12 | */ |
| 13 | |
| 14 | declare( strict_types = 1 ); |
| 15 | |
| 16 | namespace Automattic\Jetpack\Jetpack_Mu_Wpcom\Blog_Privacy; |
| 17 | |
| 18 | /** |
| 19 | * Filters the robots.txt contents based on the value of the wpcom_data_sharing_opt_out option. |
| 20 | * |
| 21 | * @param string $output The contents of robots.txt. |
| 22 | * @param bool $public Whether the site is considered public. |
| 23 | * @return string |
| 24 | */ |
| 25 | function robots_txt( $output, $public ): string { |
| 26 | if ( ! is_string( $output ) ) { |
| 27 | $output = ''; |
| 28 | } |
| 29 | |
| 30 | // WordPress passes in a bool. Re-fetch as an int to handle our custom "-1" value. |
| 31 | $public = (int) get_option( 'blog_public' ); |
| 32 | |
| 33 | // If the site is completely private, don't bother with the additional restrictions. |
| 34 | // For blog_public=0, WP.com Disallows all user agents and Core does not (relying on <meta name="robots">). |
| 35 | // Let wpcom do it's thing to not clutter the robots.txt file. |
| 36 | if ( -1 === $public || ( 0 === $public && defined( 'IS_WPCOM' ) && IS_WPCOM ) ) { |
| 37 | return $output; |
| 38 | } |
| 39 | |
| 40 | // An option oddly named because of history. |
| 41 | if ( 0 === $public || get_option( 'wpcom_data_sharing_opt_out' ) ) { |
| 42 | $ai_bots = array( |
| 43 | 'Amazonbot', |
| 44 | 'anthropic-ai', |
| 45 | 'Applebot-Extended', |
| 46 | 'Bytespider', |
| 47 | 'CCBot', |
| 48 | 'ClaudeBot', |
| 49 | 'FacebookBot', |
| 50 | 'Google-Extended', |
| 51 | 'GPTBot', |
| 52 | 'meta-externalagent', |
| 53 | 'omgili', |
| 54 | 'omgilibot', |
| 55 | 'PerplexityBot', |
| 56 | 'SentiBot', |
| 57 | 'sentibot', |
| 58 | ); |
| 59 | |
| 60 | foreach ( $ai_bots as $ai_bot ) { |
| 61 | $output .= "\nUser-agent: {$ai_bot}\n"; |
| 62 | $output .= "Disallow: /\n"; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | return $output; |
| 67 | } |
| 68 | |
| 69 | add_filter( 'robots_txt', __NAMESPACE__ . '\\robots_txt', 12, 2 ); |
| 70 | |
| 71 | /** |
| 72 | * Disable the Open Graph Tags based on the value of either wpcom_public_coming_soon option. |
| 73 | */ |
| 74 | function remove_og_tags() { |
| 75 | if ( ! (bool) get_option( 'wpcom_public_coming_soon' ) ) { |
| 76 | return; |
| 77 | } |
| 78 | |
| 79 | // Disable Jetpack Open Graph Tags. |
| 80 | add_filter( 'jetpack_enable_open_graph', '__return_false', 99 ); |
| 81 | |
| 82 | // Disable Yoast SEO. See https://developer.yoast.com/customization/yoast-seo/disabling-yoast-seo/. |
| 83 | if ( function_exists( 'YoastSEO' ) && class_exists( 'Yoast\WP\SEO\Integrations\Front_End_Integration', false ) ) { |
| 84 | // @phan-suppress-next-line PhanUndeclaredFunction, PhanUndeclaredClassReference |
| 85 | $front_end = \YoastSEO()->classes->get( \Yoast\WP\SEO\Integrations\Front_End_Integration::class ); |
| 86 | remove_action( 'wpseo_head', array( $front_end, 'present_head' ), -9999 ); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | add_action( 'wp_head', __NAMESPACE__ . '\remove_og_tags', 0 ); |