functions.opengraph.php ➔ jetpack_og_get_image_gravatar() - Code Metrics - Inspection of "Donations: Remove feature from Personal plans" - Automattic/jetpack - Measure and Improve Code Quality continuously with Scrutinizer

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Push — update/donations-required-plan ( 3cc152 )

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created 2020-08-06 09:35 UTC

functions.opengraph.php ➔ jetpack_og_get_image_gravatar() A

↳ Parent: Project

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
nc	1
nop	2
dl	0
loc	8
rs	10
c	0
b	0
f	0

<?php
/**
 * Open Graph Tags
 *
 * Add Open Graph tags so that Facebook (and any other service that supports them)
 * can crawl the site better and we provide a better sharing experience.
 *
 * @link https://ogp.me/
 * @link https://developers.facebook.com/docs/opengraph/
 *
 * @package Jetpack
 */

add_action( 'wp_head', 'jetpack_og_tags' );
add_action( 'amp_story_head', 'jetpack_og_tags' );

/**
 * Outputs Open Graph tags generated by Jetpack.
 */
function jetpack_og_tags() {
	/**
	 * Allow Jetpack to output Open Graph Meta Tags.
	 *
	 * @module sharedaddy, publicize
	 *
	 * @since 2.0.0
	 * @deprecated 2.0.3 Duplicative filter. Use `jetpack_enable_open_graph`.
	 *
	 * @param bool true Should Jetpack's Open Graph Meta Tags be enabled. Default to true.
	 */
	if ( false === apply_filters( 'jetpack_enable_opengraph', true ) ) {
		_deprecated_function( 'jetpack_enable_opengraph', '2.0.3', 'jetpack_enable_open_graph' );
		return;
	}

	$is_amp_response = ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() );

	// Disable the widont filter on WP.com to avoid stray &nbsps.
	$disable_widont = remove_filter( 'the_title', 'widont' );

	$og_output = "\n";
	if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head.
		$og_output .= "<!-- Jetpack Open Graph Tags -->\n";
	}
	$tags = array();

	/**
	 * Filter the minimum width of the images used in Jetpack Open Graph Meta Tags.
	 *
	 * @module sharedaddy, publicize
	 *
	 * @since 2.0.0
	 *
	 * @param int 200 Minimum image width used in Jetpack Open Graph Meta Tags.
	 */
	$image_width = absint( apply_filters( 'jetpack_open_graph_image_width', 200 ) );
	/**
	 * Filter the minimum height of the images used in Jetpack Open Graph Meta Tags.
	 *
	 * @module sharedaddy, publicize
	 *
	 * @since 2.0.0
	 *
	 * @param int 200 Minimum image height used in Jetpack Open Graph Meta Tags.
	 */
	$image_height       = absint( apply_filters( 'jetpack_open_graph_image_height', 200 ) );
	$description_length = 197;

	if ( is_home() || is_front_page() ) {
		$site_type              = Jetpack_Options::get_option_and_ensure_autoload( 'open_graph_protocol_site_type', '' );
		$tags['og:type']        = ! empty( $site_type ) ? $site_type : 'website';
		$tags['og:title']       = get_bloginfo( 'name' );
		$tags['og:description'] = get_bloginfo( 'description' );

		$front_page_id = get_option( 'page_for_posts' );
		if ( 'page' === get_option( 'show_on_front' ) && $front_page_id && is_home() ) {
			$tags['og:url'] = get_permalink( $front_page_id );
		} else {
			$tags['og:url'] = home_url( '/' );
		}

		// Associate a blog's root path with one or more Facebook accounts.
		$facebook_admins = Jetpack_Options::get_option_and_ensure_autoload( 'facebook_admins', array() );
		if ( ! empty( $facebook_admins ) ) {
			$tags['fb:admins'] = $facebook_admins;
		}
	} elseif ( is_author() ) {
		$tags['og:type'] = 'profile';

		$author = get_queried_object();

		if ( is_a( $author, 'WP_User' ) ) {
			$tags['og:title'] = $author->display_name;
			if ( ! empty( $author->user_url ) ) {
				$tags['og:url'] = $author->user_url;
			} else {
				$tags['og:url'] = get_author_posts_url( $author->ID );
			}
			$tags['og:description']     = $author->description;
			$tags['profile:first_name'] = get_the_author_meta( 'first_name', $author->ID );
			$tags['profile:last_name']  = get_the_author_meta( 'last_name', $author->ID );
		}
	} elseif ( is_archive() ) {
		$tags['og:type']  = 'website';
		$tags['og:title'] = wp_get_document_title();

		$archive = get_queried_object();
		if ( ! empty( $archive ) ) {
			if ( is_category() || is_tag() || is_tax() ) {
				$tags['og:url']         = get_term_link( $archive->term_id, $archive->taxonomy );
				$tags['og:description'] = $archive->description;
			} elseif ( is_post_type_archive() ) {
				$tags['og:url']         = get_post_type_archive_link( $archive->name );
				$tags['og:description'] = $archive->description;
			}
		}
	} elseif ( is_singular() ) {
		global $post;
		$data = $post; // so that we don't accidentally explode the global.

		$tags['og:type'] = 'article';
		if ( empty( $data->post_title ) ) {
			$tags['og:title'] = ' ';
		} else {
			/** This filter is documented in core/src/wp-includes/post-template.php */
			$tags['og:title'] = wp_kses( apply_filters( 'the_title', $data->post_title, $data->ID ), array() );
		}

		$tags['og:url'] = get_permalink( $data->ID );
		if ( ! post_password_required() ) {
			/*
			 * If the post author set an excerpt, use that.
			 * Otherwise, pick the post content that comes before the More tag if there is one.
			 */
			$excerpt = ! empty( $data->post_excerpt )
				? $data->post_excerpt
				: explode( '<!--more-->', $data->post_content )[0];

			$tags['og:description'] = jetpack_og_get_description( $excerpt );
		}

		$tags['article:published_time'] = gmdate( 'c', strtotime( $data->post_date_gmt ) );
		$tags['article:modified_time']  = gmdate( 'c', strtotime( $data->post_modified_gmt ) );
		if ( post_type_supports( get_post_type( $data ), 'author' ) && isset( $data->post_author ) ) {
			$publicize_facebook_user = get_post_meta( $data->ID, '_publicize_facebook_user', true );
			if ( ! empty( $publicize_facebook_user ) ) {
				$tags['article:author'] = esc_url( $publicize_facebook_user );
			}
		}
	} elseif ( is_search() ) {
		if ( '' !== get_query_var( 's', '' ) ) {
			$tags['og:title'] = wp_get_document_title();
		}
	}
	/**
	 * Allow plugins to inject additional template-specific Open Graph tags.
	 *
	 * @module sharedaddy, publicize
	 *
	 * @since 3.0.0
	 *
	 * @param array $tags Array of Open Graph Meta tags.
	 * @param array $args Array of image size parameters.
	 */
	$tags = apply_filters( 'jetpack_open_graph_base_tags', $tags, compact( 'image_width', 'image_height' ) );

	// Re-enable widont if we had disabled it.
	if ( $disable_widont ) {
		add_filter( 'the_title', 'widont' );
	}

	/**
	 * Do not return any Open Graph Meta tags if we don't have any info about a post.
	 *
	 * @module sharedaddy, publicize
	 *
	 * @since 3.0.0
	 *
	 * @param bool true Do not return any Open Graph Meta tags if we don't have any info about a post.
	 */
	if ( empty( $tags ) && apply_filters( 'jetpack_open_graph_return_if_empty', true ) ) {
		return;
	}

	$tags['og:site_name'] = get_bloginfo( 'name' );

	// Get image info and build tags.
	if ( ! post_password_required() ) {
		$image_info       = jetpack_og_get_image( $image_width, $image_height );
		$tags['og:image'] = $image_info['src'];

		if ( ! empty( $image_info['width'] ) ) {
			$tags['og:image:width'] = (int) $image_info['width'];
		}
		if ( ! empty( $image_info['height'] ) ) {
			$tags['og:image:height'] = (int) $image_info['height'];
		}
		if ( ! empty( $image_info['alt_text'] ) ) {
			$tags['og:image:alt'] = esc_attr( $image_info['alt_text'] );
		}
	}

	// Facebook whines if you give it an empty title.
	if ( empty( $tags['og:title'] ) ) {
		$tags['og:title'] = __( '(no title)', 'jetpack' );
	}

	// Shorten the description if it's too long.
	if ( isset( $tags['og:description'] ) ) {
		$tags['og:description'] = strlen( $tags['og:description'] ) > $description_length ? mb_substr( $tags['og:description'], 0, $description_length ) . '…' : $tags['og:description'];
	}

	// Try to add OG locale tag if the WP->FB data mapping exists.
	if ( defined( 'JETPACK__GLOTPRESS_LOCALES_PATH' ) && file_exists( JETPACK__GLOTPRESS_LOCALES_PATH ) ) {
		require_once JETPACK__GLOTPRESS_LOCALES_PATH;
		$_locale = get_locale();

		// We have to account for w.org vs WP.com locale divergence.
		if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
			$gp_locale = GP_Locales::by_field( 'slug', $_locale );
		} else {
			$gp_locale = GP_Locales::by_field( 'wp_locale', $_locale );
		}
	}

	if ( isset( $gp_locale->facebook_locale ) && ! empty( $gp_locale->facebook_locale ) ) {
		$tags['og:locale'] = $gp_locale->facebook_locale;
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
	}

	/**
	 * Allow the addition of additional Open Graph Meta tags, or modify the existing tags.
	 *
	 * @module sharedaddy, publicize
	 *
	 * @since 2.0.0
	 *
	 * @param array $tags Array of Open Graph Meta tags.
	 * @param array $args Array of image size parameters.
	 */
	$tags = apply_filters( 'jetpack_open_graph_tags', $tags, compact( 'image_width', 'image_height' ) );

	// secure_urls need to go right after each og:image to work properly so we will abstract them here.
	$tags['og:image:secure_url'] = ( empty( $tags['og:image:secure_url'] ) ) ? '' : $tags['og:image:secure_url'];
	$secure                      = $tags['og:image:secure_url'];
	unset( $tags['og:image:secure_url'] );
	$secure_image_num = 0;

	foreach ( (array) $tags as $tag_property => $tag_content ) {
		// to accommodate multiple images.
		$tag_content = (array) $tag_content;
		$tag_content = array_unique( $tag_content );

		foreach ( $tag_content as $tag_content_single ) {
			if ( empty( $tag_content_single ) ) {
				continue; // Don't ever output empty tags.
			}
			$og_tag = sprintf( '<meta property="%s" content="%s" />', esc_attr( $tag_property ), esc_attr( $tag_content_single ) );
			/**
			 * Filter the HTML Output of each Open Graph Meta tag.
			 *
			 * @module sharedaddy, publicize
			 *
			 * @since 2.0.0
			 *
			 * @param string $og_tag HTML HTML Output of each Open Graph Meta tag.
			 */
			$og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
			$og_output .= "\n";

			if ( 'og:image' === $tag_property ) {
				if ( is_array( $secure ) && ! empty( $secure[ $secure_image_num ] ) ) {
					$og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure[ $secure_image_num ] ) );
					/** This filter is documented in functions.opengraph.php */
					$og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
					$og_output .= "\n";
				} elseif ( ! is_array( $secure ) && ! empty( $secure ) ) {
					$og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure ) );
					/** This filter is documented in functions.opengraph.php */
					$og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
					$og_output .= "\n";
				}
				$secure_image_num++;
			}
		}
	}

	if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head.
		$og_output .= "\n<!-- End Jetpack Open Graph Tags -->";
	}
	$og_output .= "\n";
	// This is trusted output or added by a filter.
	echo $og_output; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

/**
 * Returns an image used in social shares.
 *
 * @since 2.0.0
 *
 * @param int  $width Minimum width for the image. Default is 200 based on Facebook's requirement.
 * @param int  $height Minimum height for the image. Default is 200 based on Facebook's requirement.
 * @param null $deprecated Deprecated.
 *
 * @return array The source ('src'), 'width', and 'height' of the image.
 */
function jetpack_og_get_image( $width = 200, $height = 200, $deprecated = null ) {
	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '6.6.0' );
	}
	$image = array();

	if ( is_singular() && ! is_home() ) {
		// Grab obvious image if post is an attachment page for an image.
		if ( is_attachment( get_the_ID() ) && 'image' === substr( get_post_mime_type(), 0, 5 ) ) {
			$image['src'] = wp_get_attachment_url( get_the_ID() );
		}

		// Attempt to find something good for this post using our generalized PostImages code.
		if ( empty( $image ) && class_exists( 'Jetpack_PostImages' ) ) {
			$post_images = Jetpack_PostImages::get_images(
				get_the_ID(),
				array(
					'width'  => $width,
					'height' => $height,
				)
			);
			if ( $post_images && ! is_wp_error( $post_images ) ) {

				foreach ( (array) $post_images as $post_image ) {
					$image['src'] = $post_image['src'];
					if ( isset( $post_image['src_width'], $post_image['src_height'] ) ) {
						$image['width']  = $post_image['src_width'];
						$image['height'] = $post_image['src_height'];
					}
					if ( ! empty( $post_image['alt_text'] ) ) {
						$image['alt_text'] = $post_image['alt_text'];
					}
				}
			}
		}
	} elseif ( is_author() ) {
		$author = get_queried_object();
		if ( is_a( $author, 'WP_User' ) ) {
			$image['src'] = get_avatar_url(
				$author->user_email,
				array(
					'size' => $width,
				)
			);
		}
	}

	// First fall back, blavatar.
	if ( empty( $image ) && function_exists( 'blavatar_domain' ) ) {
		$blavatar_domain = blavatar_domain( site_url() );
		if ( blavatar_exists( $blavatar_domain ) ) {
			$image['src']    = blavatar_url( $blavatar_domain, 'img', $width, false, true );
			$image['width']  = $width;
			$image['height'] = $height;
		}
	}

	// Second fall back, Site Logo.
	if ( empty( $image ) && ( function_exists( 'jetpack_has_site_logo' ) && jetpack_has_site_logo() ) ) {
		$image_id = jetpack_get_site_logo( 'id' );
		$logo     = wp_get_attachment_image_src( $image_id, 'full' );
		if (
			isset( $logo[0], $logo[1], $logo[2] )
			&& ( _jetpack_og_get_image_validate_size( $logo[1], $logo[2], $width, $height ) )
		) {
			$image['src']    = $logo[0];
			$image['width']  = $logo[1];
			$image['height'] = $logo[2];
		}
	}

	// Third fall back, Core Site Icon, if valid in size.
	if ( empty( $image ) && has_site_icon() ) {
		$image_id = get_option( 'site_icon' );
		$icon     = wp_get_attachment_image_src( $image_id, 'full' );
		if (
			isset( $icon[0], $icon[1], $icon[2] )
			&& ( _jetpack_og_get_image_validate_size( $icon[1], $icon[2], $width, $height ) )
		) {
			$image['src']    = $icon[0];
			$image['width']  = $icon[1];
			$image['height'] = $icon[2];
		}
	}

	// Final fall back, blank image.
	if ( empty( $image ) ) {
		/**
		 * Filter the default Open Graph Image tag, used when no Image can be found in a post.
		 *
		 * @since 3.0.0
		 *
		 * @param string $str Default Image URL.
		 */
		$image['src'] = apply_filters( 'jetpack_open_graph_image_default', 'https://s0.wp.com/i/blank.jpg' );
	}

	return $image;
}


/**
 * Validate the width and height against required width and height
 *
 * @param int $width      Width of the image.
 * @param int $height     Height of the image.
 * @param int $req_width  Required width to pass validation.
 * @param int $req_height Required height to pass validation.
 *
 * @return bool - True if the image passed the required size validation
 */
function _jetpack_og_get_image_validate_size( $width, $height, $req_width, $req_height ) {
	if ( ! $width || ! $height ) {
		return false;
	}

	$valid_width         = ( $width >= $req_width );
	$valid_height        = ( $height >= $req_height );
	$is_image_acceptable = $valid_width && $valid_height;

	return $is_image_acceptable;
}

/**
 * Gets a gravatar URL of the specified size.
 *
 * @param string $email E-mail address to get gravatar for.
 * @param int    $width Size of returned gravatar.
 * @return array|bool|mixed|string
 */
function jetpack_og_get_image_gravatar( $email, $width ) {
	return get_avatar_url(
		$email,
		array(
			'size' => $width,
		)
	);
}

/**
 * Clean up text meant to be used as Description Open Graph tag.
 *
 * There should be:
 * - no links
 * - no shortcodes
 * - no html tags or their contents
 * - not too many words.
 *
 * @param string       $description Text coming from WordPress (autogenerated or manually generated by author).
 * @param WP_Post|null $data        Information about our post.
 *
 * @return string $description Cleaned up description string.
 */
function jetpack_og_get_description( $description = '', $data = null ) {
	// Remove tags such as <style or <script.
	$description = wp_strip_all_tags( $description );

	/*
	 * Clean up any plain text entities left into formatted entities.
	 * Intentionally not using a filter to prevent pollution.
	 * @see https://github.com/Automattic/jetpack/pull/2899#issuecomment-151957382
	 */
	$description = wp_kses(
		trim(
			convert_chars(
				wptexturize( $description )
			)
		),
		array()
	);

	// Remove shortcodes.
	$description = strip_shortcodes( $description );

	// Remove links.
	$description = preg_replace(
		'@https?://[\S]+@',
		'',
		$description
	);

	/*
	 * Limit things to a small text blurb.
	 * There isn't a hard limit set by Facebook, so let's rely on WP's own limit.
	 * (55 words or the localized equivalent).
	 * This limit can be customized with the wp_trim_words filter.
	 */
	$description = wp_trim_words( $description );

	// Let's set a default if we have no text by now.
	if ( empty( $description ) ) {
		/**
		 * Filter the fallback `og:description` used when no excerpt information is provided.
		 *
		 * @module sharedaddy, publicize
		 *
		 * @since 3.9.0
		 *
		 * @param string $var  Fallback og:description. Default is translated `Visit the post for more'.
		 * @param object $data Post object for the current post.
		 */
		$description = apply_filters(
			'jetpack_open_graph_fallback_description',
			__( 'Visit the post for more.', 'jetpack' ),
			$data
		);
	}

	return $description;
}


1		<?php
2		/**
3		* Open Graph Tags
4		*
5		* Add Open Graph tags so that Facebook (and any other service that supports them)
6		* can crawl the site better and we provide a better sharing experience.
7		*
8		* @link https://ogp.me/
9		* @link https://developers.facebook.com/docs/opengraph/
10		*
11		* @package Jetpack
12		*/
13
14		add_action( 'wp_head', 'jetpack_og_tags' );
15		add_action( 'amp_story_head', 'jetpack_og_tags' );
16
17		/**
18		* Outputs Open Graph tags generated by Jetpack.
19		*/
20		function jetpack_og_tags() {
21		/**
22		* Allow Jetpack to output Open Graph Meta Tags.
23		*
24		* @module sharedaddy, publicize
25		*
26		* @since 2.0.0
27		* @deprecated 2.0.3 Duplicative filter. Use `jetpack_enable_open_graph`.
28		*
29		* @param bool true Should Jetpack's Open Graph Meta Tags be enabled. Default to true.
30		*/
31		if ( false === apply_filters( 'jetpack_enable_opengraph', true ) ) {
32		_deprecated_function( 'jetpack_enable_opengraph', '2.0.3', 'jetpack_enable_open_graph' );
33		return;
34		}
35
36		$is_amp_response = ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() );
37
38		// Disable the widont filter on WP.com to avoid stray &nbsps.
39		$disable_widont = remove_filter( 'the_title', 'widont' );
40
41		$og_output = "\n";
42		if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head.
43		$og_output .= "<!-- Jetpack Open Graph Tags -->\n";
44		}
45		$tags = array();
46
47		/**
48		* Filter the minimum width of the images used in Jetpack Open Graph Meta Tags.
49		*
50		* @module sharedaddy, publicize
51		*
52		* @since 2.0.0
53		*
54		* @param int 200 Minimum image width used in Jetpack Open Graph Meta Tags.
55		*/
56		$image_width = absint( apply_filters( 'jetpack_open_graph_image_width', 200 ) );
57		/**
58		* Filter the minimum height of the images used in Jetpack Open Graph Meta Tags.
59		*
60		* @module sharedaddy, publicize
61		*
62		* @since 2.0.0
63		*
64		* @param int 200 Minimum image height used in Jetpack Open Graph Meta Tags.
65		*/
66		$image_height = absint( apply_filters( 'jetpack_open_graph_image_height', 200 ) );
67		$description_length = 197;
68
69		if ( is_home() \|\| is_front_page() ) {
70		$site_type = Jetpack_Options::get_option_and_ensure_autoload( 'open_graph_protocol_site_type', '' );
71		$tags['og:type'] = ! empty( $site_type ) ? $site_type : 'website';
72		$tags['og:title'] = get_bloginfo( 'name' );
73		$tags['og:description'] = get_bloginfo( 'description' );
74
75		$front_page_id = get_option( 'page_for_posts' );
76		if ( 'page' === get_option( 'show_on_front' ) && $front_page_id && is_home() ) {
77		$tags['og:url'] = get_permalink( $front_page_id );
78		} else {
79		$tags['og:url'] = home_url( '/' );
80		}
81
82		// Associate a blog's root path with one or more Facebook accounts.
83		$facebook_admins = Jetpack_Options::get_option_and_ensure_autoload( 'facebook_admins', array() );
84		if ( ! empty( $facebook_admins ) ) {
85		$tags['fb:admins'] = $facebook_admins;
86		}
87		} elseif ( is_author() ) {
88		$tags['og:type'] = 'profile';
89
90		$author = get_queried_object();
91
92		if ( is_a( $author, 'WP_User' ) ) {
93		$tags['og:title'] = $author->display_name;
94		if ( ! empty( $author->user_url ) ) {
95		$tags['og:url'] = $author->user_url;
96		} else {
97		$tags['og:url'] = get_author_posts_url( $author->ID );
98		}
99		$tags['og:description'] = $author->description;
100		$tags['profile:first_name'] = get_the_author_meta( 'first_name', $author->ID );
101		$tags['profile:last_name'] = get_the_author_meta( 'last_name', $author->ID );
102		}
103		} elseif ( is_archive() ) {
104		$tags['og:type'] = 'website';
105		$tags['og:title'] = wp_get_document_title();
106
107		$archive = get_queried_object();
108		if ( ! empty( $archive ) ) {
109		if ( is_category() \|\| is_tag() \|\| is_tax() ) {
110		$tags['og:url'] = get_term_link( $archive->term_id, $archive->taxonomy );
111		$tags['og:description'] = $archive->description;
112		} elseif ( is_post_type_archive() ) {
113		$tags['og:url'] = get_post_type_archive_link( $archive->name );
114		$tags['og:description'] = $archive->description;
115		}
116		}
117		} elseif ( is_singular() ) {
118		global $post;
119		$data = $post; // so that we don't accidentally explode the global.
120
121		$tags['og:type'] = 'article';
122		if ( empty( $data->post_title ) ) {
123		$tags['og:title'] = ' ';
124		} else {
125		/** This filter is documented in core/src/wp-includes/post-template.php */
126		$tags['og:title'] = wp_kses( apply_filters( 'the_title', $data->post_title, $data->ID ), array() );
127		}
128
129		$tags['og:url'] = get_permalink( $data->ID );
130		if ( ! post_password_required() ) {
131		/*
132		* If the post author set an excerpt, use that.
133		* Otherwise, pick the post content that comes before the More tag if there is one.
134		*/
135		$excerpt = ! empty( $data->post_excerpt )
136		? $data->post_excerpt
137		: explode( '<!--more-->', $data->post_content )[0];
138
139		$tags['og:description'] = jetpack_og_get_description( $excerpt );
140		}
141
142		$tags['article:published_time'] = gmdate( 'c', strtotime( $data->post_date_gmt ) );
143		$tags['article:modified_time'] = gmdate( 'c', strtotime( $data->post_modified_gmt ) );
144		if ( post_type_supports( get_post_type( $data ), 'author' ) && isset( $data->post_author ) ) {
145		$publicize_facebook_user = get_post_meta( $data->ID, '_publicize_facebook_user', true );
146		if ( ! empty( $publicize_facebook_user ) ) {
147		$tags['article:author'] = esc_url( $publicize_facebook_user );
148		}
149		}
150		} elseif ( is_search() ) {
151		if ( '' !== get_query_var( 's', '' ) ) {
152		$tags['og:title'] = wp_get_document_title();
153		}
154		}
155		/**
156		* Allow plugins to inject additional template-specific Open Graph tags.
157		*
158		* @module sharedaddy, publicize
159		*
160		* @since 3.0.0
161		*
162		* @param array $tags Array of Open Graph Meta tags.
163		* @param array $args Array of image size parameters.
164		*/
165		$tags = apply_filters( 'jetpack_open_graph_base_tags', $tags, compact( 'image_width', 'image_height' ) );
166
167		// Re-enable widont if we had disabled it.
168		if ( $disable_widont ) {
169		add_filter( 'the_title', 'widont' );
170		}
171
172		/**
173		* Do not return any Open Graph Meta tags if we don't have any info about a post.
174		*
175		* @module sharedaddy, publicize
176		*
177		* @since 3.0.0
178		*
179		* @param bool true Do not return any Open Graph Meta tags if we don't have any info about a post.
180		*/
181		if ( empty( $tags ) && apply_filters( 'jetpack_open_graph_return_if_empty', true ) ) {
182		return;
183		}
184
185		$tags['og:site_name'] = get_bloginfo( 'name' );
186
187		// Get image info and build tags.
188		if ( ! post_password_required() ) {
189		$image_info = jetpack_og_get_image( $image_width, $image_height );
190		$tags['og:image'] = $image_info['src'];
191
192		if ( ! empty( $image_info['width'] ) ) {
193		$tags['og:image:width'] = (int) $image_info['width'];
194		}
195		if ( ! empty( $image_info['height'] ) ) {
196		$tags['og:image:height'] = (int) $image_info['height'];
197		}
198		if ( ! empty( $image_info['alt_text'] ) ) {
199		$tags['og:image:alt'] = esc_attr( $image_info['alt_text'] );
200		}
201		}
202
203		// Facebook whines if you give it an empty title.
204		if ( empty( $tags['og:title'] ) ) {
205		$tags['og:title'] = __( '(no title)', 'jetpack' );
206		}
207
208		// Shorten the description if it's too long.
209		if ( isset( $tags['og:description'] ) ) {
210		$tags['og:description'] = strlen( $tags['og:description'] ) > $description_length ? mb_substr( $tags['og:description'], 0, $description_length ) . '…' : $tags['og:description'];
211		}
212
213		// Try to add OG locale tag if the WP->FB data mapping exists.
214		if ( defined( 'JETPACK__GLOTPRESS_LOCALES_PATH' ) && file_exists( JETPACK__GLOTPRESS_LOCALES_PATH ) ) {
215		require_once JETPACK__GLOTPRESS_LOCALES_PATH;
216		$_locale = get_locale();
217
218		// We have to account for w.org vs WP.com locale divergence.
219		if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
220		$gp_locale = GP_Locales::by_field( 'slug', $_locale );
221		} else {
222		$gp_locale = GP_Locales::by_field( 'wp_locale', $_locale );
223		}
224		}
225
226		if ( isset( $gp_locale->facebook_locale ) && ! empty( $gp_locale->facebook_locale ) ) {
227		$tags['og:locale'] = $gp_locale->facebook_locale;
		0 ignored issues – show Bug introduced 2017-04-18 21:07 UTC by Report Bug Copy Issue Report The variable `$gp_locale` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
228		}
229
230		/**
231		* Allow the addition of additional Open Graph Meta tags, or modify the existing tags.
232		*
233		* @module sharedaddy, publicize
234		*
235		* @since 2.0.0
236		*
237		* @param array $tags Array of Open Graph Meta tags.
238		* @param array $args Array of image size parameters.
239		*/
240		$tags = apply_filters( 'jetpack_open_graph_tags', $tags, compact( 'image_width', 'image_height' ) );
241
242		// secure_urls need to go right after each og:image to work properly so we will abstract them here.
243		$tags['og:image:secure_url'] = ( empty( $tags['og:image:secure_url'] ) ) ? '' : $tags['og:image:secure_url'];
244		$secure = $tags['og:image:secure_url'];
245		unset( $tags['og:image:secure_url'] );
246		$secure_image_num = 0;
247
248		foreach ( (array) $tags as $tag_property => $tag_content ) {
249		// to accommodate multiple images.
250		$tag_content = (array) $tag_content;
251		$tag_content = array_unique( $tag_content );
252
253		foreach ( $tag_content as $tag_content_single ) {
254		if ( empty( $tag_content_single ) ) {
255		continue; // Don't ever output empty tags.
256		}
257		$og_tag = sprintf( '<meta property="%s" content="%s" />', esc_attr( $tag_property ), esc_attr( $tag_content_single ) );
258		/**
259		* Filter the HTML Output of each Open Graph Meta tag.
260		*
261		* @module sharedaddy, publicize
262		*
263		* @since 2.0.0
264		*
265		* @param string $og_tag HTML HTML Output of each Open Graph Meta tag.
266		*/
267		$og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
268		$og_output .= "\n";
269
270		if ( 'og:image' === $tag_property ) {
271		if ( is_array( $secure ) && ! empty( $secure[ $secure_image_num ] ) ) {
272		$og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure[ $secure_image_num ] ) );
273		/** This filter is documented in functions.opengraph.php */
274		$og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
275		$og_output .= "\n";
276		} elseif ( ! is_array( $secure ) && ! empty( $secure ) ) {
277		$og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure ) );
278		/** This filter is documented in functions.opengraph.php */
279		$og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
280		$og_output .= "\n";
281		}
282		$secure_image_num++;
283		}
284		}
285		}
286
287		if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head.
288		$og_output .= "\n<!-- End Jetpack Open Graph Tags -->";
289		}
290		$og_output .= "\n";
291		// This is trusted output or added by a filter.
292		echo $og_output; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
293		}
294
295		/**
296		* Returns an image used in social shares.
297		*
298		* @since 2.0.0
299		*
300		* @param int $width Minimum width for the image. Default is 200 based on Facebook's requirement.
301		* @param int $height Minimum height for the image. Default is 200 based on Facebook's requirement.
302		* @param null $deprecated Deprecated.
303		*
304		* @return array The source ('src'), 'width', and 'height' of the image.
305		*/
306		function jetpack_og_get_image( $width = 200, $height = 200, $deprecated = null ) {
307		if ( ! empty( $deprecated ) ) {
308		_deprecated_argument( __FUNCTION__, '6.6.0' );
309		}
310		$image = array();
311
312		if ( is_singular() && ! is_home() ) {
313		// Grab obvious image if post is an attachment page for an image.
314		if ( is_attachment( get_the_ID() ) && 'image' === substr( get_post_mime_type(), 0, 5 ) ) {
315		$image['src'] = wp_get_attachment_url( get_the_ID() );
316		}
317
318		// Attempt to find something good for this post using our generalized PostImages code.
319		if ( empty( $image ) && class_exists( 'Jetpack_PostImages' ) ) {
320		$post_images = Jetpack_PostImages::get_images(
321		get_the_ID(),
322		array(
323		'width' => $width,
324		'height' => $height,
325		)
326		);
327		if ( $post_images && ! is_wp_error( $post_images ) ) {
		0 ignored issues – show Bug Best Practice introduced 2015-11-20 23:03 UTC by Report Bug Copy Issue Report The expression `$post_images` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
328		foreach ( (array) $post_images as $post_image ) {
329		$image['src'] = $post_image['src'];
330	View Code Duplication	if ( isset( $post_image['src_width'], $post_image['src_height'] ) ) {
331		$image['width'] = $post_image['src_width'];
332		$image['height'] = $post_image['src_height'];
333		}
334		if ( ! empty( $post_image['alt_text'] ) ) {
335		$image['alt_text'] = $post_image['alt_text'];
336		}
337		}
338		}
339		}
340		} elseif ( is_author() ) {
341		$author = get_queried_object();
342		if ( is_a( $author, 'WP_User' ) ) {
343		$image['src'] = get_avatar_url(
344		$author->user_email,
345		array(
346		'size' => $width,
347		)
348		);
349		}
350		}
351
352		// First fall back, blavatar.
353		if ( empty( $image ) && function_exists( 'blavatar_domain' ) ) {
354		$blavatar_domain = blavatar_domain( site_url() );
355		if ( blavatar_exists( $blavatar_domain ) ) {
356		$image['src'] = blavatar_url( $blavatar_domain, 'img', $width, false, true );
357		$image['width'] = $width;
358		$image['height'] = $height;
359		}
360		}
361
362		// Second fall back, Site Logo.
363	View Code Duplication	if ( empty( $image ) && ( function_exists( 'jetpack_has_site_logo' ) && jetpack_has_site_logo() ) ) {
364		$image_id = jetpack_get_site_logo( 'id' );
365		$logo = wp_get_attachment_image_src( $image_id, 'full' );
366		if (
367		isset( $logo[0], $logo[1], $logo[2] )
368		&& ( _jetpack_og_get_image_validate_size( $logo[1], $logo[2], $width, $height ) )
369		) {
370		$image['src'] = $logo[0];
371		$image['width'] = $logo[1];
372		$image['height'] = $logo[2];
373		}
374		}
375
376		// Third fall back, Core Site Icon, if valid in size.
377	View Code Duplication	if ( empty( $image ) && has_site_icon() ) {
378		$image_id = get_option( 'site_icon' );
379		$icon = wp_get_attachment_image_src( $image_id, 'full' );
380		if (
381		isset( $icon[0], $icon[1], $icon[2] )
382		&& ( _jetpack_og_get_image_validate_size( $icon[1], $icon[2], $width, $height ) )
383		) {
384		$image['src'] = $icon[0];
385		$image['width'] = $icon[1];
386		$image['height'] = $icon[2];
387		}
388		}
389
390		// Final fall back, blank image.
391		if ( empty( $image ) ) {
392		/**
393		* Filter the default Open Graph Image tag, used when no Image can be found in a post.
394		*
395		* @since 3.0.0
396		*
397		* @param string $str Default Image URL.
398		*/
399		$image['src'] = apply_filters( 'jetpack_open_graph_image_default', 'https://s0.wp.com/i/blank.jpg' );
400		}
401
402		return $image;
403		}
404
405
406		/**
407		* Validate the width and height against required width and height
408		*
409		* @param int $width Width of the image.
410		* @param int $height Height of the image.
411		* @param int $req_width Required width to pass validation.
412		* @param int $req_height Required height to pass validation.
413		*
414		* @return bool - True if the image passed the required size validation
415		*/
416		function _jetpack_og_get_image_validate_size( $width, $height, $req_width, $req_height ) {
417		if ( ! $width \|\| ! $height ) {
418		return false;
419		}
420
421		$valid_width = ( $width >= $req_width );
422		$valid_height = ( $height >= $req_height );
423		$is_image_acceptable = $valid_width && $valid_height;
424
425		return $is_image_acceptable;
426		}
427
428		/**
429		* Gets a gravatar URL of the specified size.
430		*
431		* @param string $email E-mail address to get gravatar for.
432		* @param int $width Size of returned gravatar.
433		* @return array\|bool\|mixed\|string
434		*/
435		function jetpack_og_get_image_gravatar( $email, $width ) {
436		return get_avatar_url(
437		$email,
438		array(
439		'size' => $width,
440		)
441		);
442		}
443
444		/**
445		* Clean up text meant to be used as Description Open Graph tag.
446		*
447		* There should be:
448		* - no links
449		* - no shortcodes
450		* - no html tags or their contents
451		* - not too many words.
452		*
453		* @param string $description Text coming from WordPress (autogenerated or manually generated by author).
454		* @param WP_Post\|null $data Information about our post.
455		*
456		* @return string $description Cleaned up description string.
457		*/
458		function jetpack_og_get_description( $description = '', $data = null ) {
459		// Remove tags such as <style or <script.
460		$description = wp_strip_all_tags( $description );
461
462		/*
463		* Clean up any plain text entities left into formatted entities.
464		* Intentionally not using a filter to prevent pollution.
465		* @see https://github.com/Automattic/jetpack/pull/2899#issuecomment-151957382
466		*/
467		$description = wp_kses(
468		trim(
469		convert_chars(
470		wptexturize( $description )
471		)
472		),
473		array()
474		);
475
476		// Remove shortcodes.
477		$description = strip_shortcodes( $description );
478
479		// Remove links.
480		$description = preg_replace(
481		'@https?://[\S]+@',
482		'',
483		$description
484		);
485
486		/*
487		* Limit things to a small text blurb.
488		* There isn't a hard limit set by Facebook, so let's rely on WP's own limit.
489		* (55 words or the localized equivalent).
490		* This limit can be customized with the wp_trim_words filter.
491		*/
492		$description = wp_trim_words( $description );
493
494		// Let's set a default if we have no text by now.
495		if ( empty( $description ) ) {
496		/**
497		* Filter the fallback `og:description` used when no excerpt information is provided.
498		*
499		* @module sharedaddy, publicize
500		*
501		* @since 3.9.0
502		*
503		* @param string $var Fallback og:description. Default is translated `Visit the post for more'.
504		* @param object $data Post object for the current post.
505		*/
506		$description = apply_filters(
507		'jetpack_open_graph_fallback_description',
508		__( 'Visit the post for more.', 'jetpack' ),
509		$data
510		);
511		}
512
513		return $description;
514		}
515

Automattic / jetpack

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functions.opengraph.php ➔ jetpack_og_get_image_gravatar() A

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