friends = $friends;
$this->register_hooks();
}
/**
* Register the WordPress hooks
*/
private function register_hooks() {
add_filter( 'pre_get_posts', array( $this, 'friend_posts_query' ), 2 );
add_filter( 'post_type_link', array( $this, 'friend_post_link' ), 10, 2 );
add_filter( 'friends_header_widget_title', array( $this, 'header_widget_title' ) );
add_filter( 'get_edit_post_link', array( $this, 'friend_post_edit_link' ) );
add_filter( 'template_include', array( $this, 'template_override' ) );
add_filter( 'wp_loaded', array( $this, 'add_rewrite_rule' ) );
add_filter( 'init', array( $this, 'register_friends_sidebar' ) );
add_action( 'init', array( $this, 'add_theme_supports' ) );
add_action( 'wp_ajax_friends_publish', array( $this, 'ajax_frontend_publish_post' ) );
add_action( 'wp_ajax_friends-change-post-format', array( $this, 'ajax_change_post_format' ) );
add_action( 'wp_ajax_friends-load-next-page', array( $this, 'ajax_load_next_page' ) );
add_action( 'wp_ajax_friends-autocomplete', array( $this, 'ajax_autocomplete' ) );
add_action( 'wp_ajax_friends-in-reply-to-preview', array( $this, 'ajax_in_reply_to_preview' ) );
add_action( 'wp_ajax_friends-star', array( $this, 'ajax_star_friend_user' ) );
add_action( 'wp_ajax_friends-load-comments', array( $this, 'ajax_load_comments' ) );
add_action( 'wp_ajax_friends-reblog', array( $this, 'wp_ajax_reblog' ) );
add_action( 'friends_post_footer_first', array( $this, 'reblog_button' ) );
add_filter( 'friends_reblog', array( get_called_class(), 'reblog' ), 10, 2 );
add_filter( 'friends_unreblog', array( get_called_class(), 'unreblog' ), 10, 2 );
add_action( 'wp_untrash_post_status', array( $this, 'untrash_post_status' ), 10, 3 );
add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
add_action( 'wp_enqueue_scripts', array( $this, 'dequeue_scripts' ), 99999 );
add_action( 'wp_footer', array( $this, 'dequeue_scripts' ) );
add_action( 'the_post', array( $this, 'the_post' ), 10, 2 );
add_action( 'parse_query', array( $this, 'parse_query' ) );
add_filter( 'body_class', array( $this, 'add_body_class' ) );
add_filter( 'friends_override_author_name', array( $this, 'override_author_name' ), 10, 3 );
}
/**
* We're asking WordPress to handle the title for us.
*/
public function add_rewrite_rule() {
add_rewrite_rule(
'friends/(.*)/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$',
'index.php?pagename=friends/$matches[1]&feed=$matches[2]',
'top'
);
add_rewrite_rule(
'friends/(.*)/(\d+)/?$',
'index.php?pagename=friends/$matches[1]&page=$matches[2]',
'top'
);
add_rewrite_rule(
'friends/(.*)',
'index.php?pagename=friends/$matches[1]',
'top'
);
}
/**
* Run our add_theme_supports if on the frontend.
*/
public function add_theme_supports() {
if ( ! Friends::on_frontend() ) {
return;
}
$this->add_theme_support_title_tag();
$this->add_theme_support_admin_bar();
}
/**
* We're asking WordPress to handle the title for us.
*/
private function add_theme_support_title_tag() {
add_theme_support( 'title-tag' );
add_filter( 'document_title_parts', array( $this, 'modify_page_title' ) );
}
/**
* Remove the margin-top on the friends page.
*/
private function add_theme_support_admin_bar() {
add_theme_support(
'admin-bar',
array(
'callback' => '__return_false',
)
);
}
/**
* Modify the page title to be output. This function is only invoked on the friends page.
*
* @param array $title The title.
*
* @return array The modified title.
*/
public function modify_page_title( $title ) {
if ( is_single() ) {
$title['page'] = __( 'Friends', 'friends' );
$title['site'] = $this->author->display_name;
} elseif ( $this->author instanceof User ) {
$title['title'] = __( 'Friends', 'friends' );
$title['site'] = $this->author->display_name;
} else {
$title = array(
'site' => __( 'Friends', 'friends' ),
);
}
return $title;
}
/**
* Registers the sidebar for the /friends page.
*/
public function register_friends_sidebar() {
register_sidebar(
array(
'name' => 'Friends Topbar',
'id' => 'friends-topbar',
'before_widget' => '',
'after_widget' => '
',
'before_title' => '',
'after_title' => '
',
)
);
register_sidebar(
array(
'name' => 'Friends Sidebar',
'id' => 'friends-sidebar',
'before_widget' => '',
'after_widget' => '
',
'before_title' => '',
'after_title' => '
',
)
);
if ( Friends::on_frontend() ) {
add_action( 'customize_register', '__return_true' );
}
}
/**
* Reference our script for the /friends page
*/
public function enqueue_scripts() {
global $wp_query;
if ( is_user_logged_in() && Friends::on_frontend() ) {
$handle = 'friends';
$file = 'friends.js';
$version = Friends::VERSION;
wp_enqueue_script( $handle, plugins_url( $file, FRIENDS_PLUGIN_FILE ), array( 'common', 'jquery', 'wp-util' ), apply_filters( 'friends_debug_enqueue', $version, $handle, dirname( FRIENDS_PLUGIN_FILE ) . '/' . $file ) );
$query_vars = serialize( $this->get_minimal_query_vars( $wp_query->query_vars ) );
$variables = array(
'emojis_json' => plugins_url( 'emojis.json', FRIENDS_PLUGIN_FILE ),
'ajax_url' => admin_url( 'admin-ajax.php' ),
'text_link_expired' => __( 'The link has expired. A new link has been generated, please click it again.', 'friends' ),
'text_undo' => __( 'Undo' ), // phpcs:ignore WordPress.WP.I18n.MissingArgDomain
'text_trash_post' => __( 'Trash this post', 'friends' ),
'text_del_convers' => __( 'Do you really want to delete this conversation?', 'friends' ),
'text_no_more_posts' => __( 'No more posts available.', 'friends' ),
'query_vars' => $query_vars,
'qv_sign' => sha1( wp_salt( 'nonce' ) . $query_vars ),
'current_page' => get_query_var( 'paged' ) ? get_query_var( 'paged' ) : 1,
'max_page' => $wp_query->max_num_pages,
);
wp_localize_script( 'friends', 'friends', $variables );
$handle = 'friends';
$file = 'friends.css';
$version = Friends::VERSION;
wp_enqueue_style( $handle, plugins_url( $file, FRIENDS_PLUGIN_FILE ), array(), apply_filters( 'friends_debug_enqueue', $version, $handle, dirname( FRIENDS_PLUGIN_FILE ) . '/' . $file ) );
}
}
public function dequeue_scripts() {
if ( is_user_logged_in() && Friends::on_frontend() ) {
// Dequeue theme styles so taht they don't interact with the Friends frontend.
$wp_styles = wp_styles();
foreach ( $wp_styles->queue as $style ) {
$src = $wp_styles->registered[ $style ]->src;
if ( 'global-styles' === $style || false !== strpos( $src, '/themes/' ) ) {
wp_dequeue_style( $style );
}
}
}
}
public function the_post( $post, $query ) {
Subscription::set_authordata_by_query( $query );
}
public function parse_query( $query ) {
Subscription::set_authordata_by_query( $query );
}
/**
* Add a CSS class to the body
*
* @param array $classes The existing CSS classes.
* @return array The modified CSS classes.
*/
public function add_body_class( $classes ) {
if ( $this->friends->on_frontend() ) {
$classes[] = 'friends-page';
}
return $classes;
}
/**
* Gets the minimal query variables.
*
* @param array $query_vars The query variables.
*
* @return array The minimal query variables.
*/
private function get_minimal_query_vars( $query_vars ) {
return array_filter( array_intersect_key( $query_vars, array_flip( array( 'p', 'page_id', 'pagename', 'author', 'author__not_in', 'post_type', 'post_status', 'posts_per_page', 'order', 'tax_query' ) ) ) );
}
public function wp_ajax_reblog() {
if ( ! current_user_can( Friends::REQUIRED_ROLE ) ) {
wp_send_json_error( 'error' );
}
$post = get_post( $_POST['post_id'] );
if ( ! $post || ! Friends::check_url( $post->guid ) ) {
wp_send_json_error( 'unknown-post', array( 'guid' => $post->guid ) );
}
/**
* Reblogs a post
*
* @param int|null $reblog_post_id The post ID of the reblogged post. Default null.
* @param WP_Post $post The post object.
*/
$reblog_post_id = apply_filters( 'friends_reblog', null, $post );
if ( ! $reblog_post_id || is_wp_error( $reblog_post_id ) ) {
wp_send_json_error( 'error' );
}
wp_send_json_success(
array(
'post_id' => $reblog_post_id,
)
);
}
public function reblog_button() {
$button_label = apply_filters( 'friends_reblog_button_label', _x( 'Reblog', 'button', 'friends' ) );
Friends::template_loader()->get_template_part(
'frontend/parts/reblog-button',
null,
array(
'button-label' => $button_label,
)
);
}
public static function reblog( $ret, $post ) {
if ( ! $post ) {
return $ret;
}
$post = get_post( $post );
if ( ! $post ) {
return $ret;
}
$author = get_post_meta( $post->ID, 'author', true );
if ( ! $author ) {
$friend = User::get_post_author( $post );
$author = $friend->display_name;
}
$reblog = '' . PHP_EOL . '';
$reblog .= sprintf(
// translators: %s is a link.
__( 'Reblog via %s', 'friends' ),
'' . esc_html( $author ) . ''
);
$reblog .= PHP_EOL . '
' . PHP_EOL . '' . PHP_EOL;
$new_post = array(
'post_title' => $post->title,
'post_author' => get_current_user_id(),
'post_status' => 'publish',
'post_type' => 'post',
'post_content' => $reblog . $post->post_content,
);
$new_post_id = wp_insert_post( $new_post );
set_post_format( $new_post_id, get_post_format( $post ) );
update_post_meta( $new_post_id, 'reblog', $post->guid );
update_post_meta( $new_post_id, 'reblog_of', $post->ID );
update_post_meta( $post->ID, 'reblogged', $new_post_id );
update_post_meta( $post->ID, 'reblogged_by', get_current_user_id() );
return $new_post_id;
}
public static function unreblog( $ret, $post ) {
if ( ! $post ) {
return $ret;
}
$post = get_post( $post );
if ( ! $post ) {
return $ret;
}
$reblogged = get_post_meta( $post->ID, 'reblogged', true );
if ( ! $reblogged ) {
return $ret;
}
wp_trash_post( $reblogged );
return $reblogged;
}
/**
* The Ajax function to be called upon posting from /friends
*/
public function ajax_frontend_publish_post() {
if ( ! wp_verify_nonce( $_POST['_wpnonce'], 'friends_publish' ) ) {
return false;
}
$p = array(
'post_type' => 'post',
'post_title' => isset( $_POST['title'] ) ? $_POST['title'] : '',
'post_content' => isset( $_POST['content'] ) ? $_POST['content'] : '',
'post_status' => isset( $_POST['status'] ) ? $_POST['status'] : '',
'post_format' => isset( $_POST['format'] ) ? $_POST['format'] : '',
);
if ( empty( $p['post_status'] ) ) {
$p['post_status'] = 'publish';
}
$result = 'empty';
if ( ! empty( $_POST['in_reply_to'] ) ) {
$p['post_meta_input'] = array(
'activitypub_in_reply_to' => $_POST['in_reply_to'],
);
}
if ( ! empty( $p['post_content'] ) || ! empty( $p['post_title'] ) ) {
$post_id = wp_insert_post( $p );
if ( ! empty( $p['post_format'] ) ) {
set_post_format( $post_id, $p['post_format'] );
}
$result = is_wp_error( $post_id ) ? 'error' : 'success';
}
if ( ! empty( $_SERVER['HTTP_X_REQUESTED_WITH'] ) && strtolower( $_SERVER['HTTP_X_REQUESTED_WITH'] ) === 'xmlhttprequest' ) {
echo esc_html( $result );
exit;
} else {
wp_safe_redirect( remove_query_arg( 'in_reply_to', add_query_arg( 'result', $result, $_SERVER['HTTP_REFERER'] ) ) );
exit;
}
}
/**
* The Ajax function to change the post format from the Frontend.
*/
public function ajax_change_post_format() {
$post_id = isset( $_POST['id'] ) ? (int) $_POST['id'] : 0;
$post_format = isset( $_POST['format'] ) ? $_POST['format'] : 'standard';
check_ajax_referer( "friends-change-post-format_$post_id" );
if ( ! current_user_can( Friends::REQUIRED_ROLE, $post_id ) ) {
wp_send_json_error();
exit;
}
$post_formats = get_post_format_strings();
if ( ! isset( $post_formats[ $post_format ] ) ) {
wp_send_json_error();
exit;
}
if ( ! set_post_format( $post_id, $post_format ) ) {
wp_send_json_error();
exit;
}
wp_send_json_success();
}
/**
* Calculates an estimating read time.
*
* @param string $original_text The original text.
*
* @return float The read time in seconds.
*/
private static function calculate_read_time( $original_text ) {
// from wp_trim_words().
$text = wp_strip_all_tags( $original_text );
/*
* translators: If your word count is based on single characters (e.g. East Asian characters),
* enter 'characters_excluding_spaces' or 'characters_including_spaces'. Otherwise, enter 'words'.
* Do not translate into your own language.
*/
if ( strpos( _x( 'words', 'Word count type. Do not translate!' ), 'characters' ) === 0 && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) { // phpcs:ignore WordPress.WP.I18n.MissingArgDomain
$text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $text ), ' ' );
preg_match_all( '/./u', $text, $words_array );
$words_array = array_shift( $words_array );
$words_per_minute = 500;
} else {
$words_array = preg_split( "/[\n\r\t ]+/", $text, -1, PREG_SPLIT_NO_EMPTY );
$words_per_minute = 200;
}
$additional_time = 0;
$figures = substr_count( strtolower( $original_text ), ' $friends,
'avatar' => get_post_meta( get_the_ID(), 'gravatar', true ),
);
$args['friend_user'] = User::get_post_author( $post );
$read_time = self::calculate_read_time( get_the_content() );
if ( $read_time >= 60 ) {
$mins = ceil( $read_time / MINUTE_IN_SECONDS );
/* translators: Time difference between two dates, in minutes (min=minute). %s: Number of minutes. */
$args['read_time'] = sprintf( _n( '%s min', '%s mins', $mins ), $mins ); // phpcs:ignore WordPress.WP.I18n.MissingArgDomain
} elseif ( $read_time > 20 ) {
/* translators: Time difference between two dates, in minutes (min=minute). %s: Number of minutes. */
$args['read_time'] = _x( '< 1 min', 'reading time', 'friends' );
}
Friends::template_loader()->get_template_part(
'frontend/parts/content',
get_post_format(),
$args
);
}
}
/**
* The Ajax function to load more posts for infinite scrolling.
*/
public function ajax_load_next_page() {
$query_vars = wp_unslash( $_POST['query_vars'] );
if ( sha1( wp_salt( 'nonce' ) . $query_vars ) !== $_POST['qv_sign'] ) {
wp_send_json_error();
exit;
}
$query_vars = unserialize( $query_vars );
$query_vars['paged'] = intval( $_POST['page'] ) + 1;
query_posts( $query_vars );
ob_start();
if ( have_posts() ) {
self::have_posts();
} else {
esc_html_e( 'No further posts of your friends could were found.', 'friends' );
}
$posts = ob_get_contents();
ob_end_clean();
wp_send_json_success( $posts );
}
/**
* Get metadata for in_reply_to_preview.
*
* @param string $url The url.
*
* @return array|WP_Error The in reply to metadata.
*/
public function get_in_reply_to_metadata( $url ) {
$meta = apply_filters( 'friends_get_activitypub_metadata', array(), $url );
if ( is_wp_error( $meta ) ) {
return $meta;
}
if ( ! $meta || ! isset( $meta['attributedTo'] ) ) {
return new \WP_Error( 'no-activitypub', 'No ActivityPub metadata found.' );
}
$html = 'URL: ' . make_clickable( $meta['id'] );
$html .= '' . force_balance_tags( wp_kses_post( $meta['content'] ) ) . '
';
$webfinger = apply_filters( 'friends_get_activitypub_metadata', array(), $meta['attributedTo'] );
$mention = '';
if ( $webfinger && ! is_wp_error( $webfinger ) ) {
$mention = '@' . $webfinger['preferredUsername'] . '@' . parse_url( $url, PHP_URL_HOST );
}
return array(
'url' => $url,
'html' => $html,
'author' => $meta['attributedTo'],
'mention' => $mention,
);
}
/**
* The Ajax function to fill the in-reply-to-preview.
*/
public function ajax_in_reply_to_preview() {
$url = wp_unslash( $_POST['url'] );
if ( ! wp_parse_url( $url ) ) {
wp_send_json_error();
exit;
}
$meta = $this->get_in_reply_to_metadata( $_POST['url'] );
if ( is_wp_error( $meta ) ) {
wp_send_json_error( $meta->get_error_message() );
exit;
}
wp_send_json_success( $meta );
}
/**
* The Ajax function to autocomplete search.
*/
public function ajax_autocomplete() {
$q = wp_unslash( $_POST['q'] );
$users = User_Query::search( '*' . $q . '*' );
$results = array();
foreach ( $users->get_results() as $friend ) {
$result = '';
$results[] = $result;
}
wp_send_json_success( implode( PHP_EOL, $results ) );
}
/**
* The Ajax function to load comments.
*/
public function ajax_load_comments() {
if ( ! isset( $_POST['post_id'] ) || ! intval( $_POST['post_id'] ) ) {
wp_send_json_error();
exit;
}
$post_id = intval( $_POST['post_id'] );
check_ajax_referer( "comments-$post_id" );
$comments = get_comments(
array(
'post_id' => $post_id,
)
);
$author_id = get_post_field( 'post_author', $post_id );
$friend_user = new User( $author_id );
$comments_url = get_post_meta( $post_id, Feed::COMMENTS_FEED_META, true );
if ( ! $comments_url && empty( $comments ) ) {
wp_send_json_error( __( 'No comments feed available.', 'friends' ) );
exit;
}
if ( $friend_user->is_friend_url( $comments_url ) && friends::has_required_privileges() || wp_doing_cron() ) {
$comments_url = apply_filters( 'friends_friend_private_feed_url', $comments_url, $friend_user );
$comments_url = $this->friends->access_control->append_auth( $comments_url, $friend_user, 300 );
}
$feed_comments = $this->friends->feed->preview( 'simplepie', $comments_url );
if ( empty( $comments ) && ( is_wp_error( $feed_comments ) || ! is_array( $feed_comments ) ) ) {
wp_send_json_error( '' . __( 'Unfortunately, comments were not available via RSS.', 'friends' ) . '' );
exit;
} elseif ( is_wp_error( $feed_comments ) ) {
$feed_comments = array();
}
$template_loader = Friends::template_loader();
ob_start();
?>
get_template_part(
'frontend/parts/comment',
null,
array(
'author' => $comment->comment_author,
'date' => $comment->comment_date,
'permalink' => $comment->guid . '#comment-' . $comment->comment_ID,
'post_content' => $comment->comment_content,
)
);
}
foreach ( $feed_comments as $comment ) {
$template_loader->get_template_part(
'frontend/parts/comment',
null,
array(
'author' => $comment->author,
'date' => $comment->date,
'permalink' => $comment->permalink,
'post_content' => $comment->post_content,
)
);
}
?>
set_starred( $starred );
wp_send_json_success(
array(
'starred' => $friend_user->get_starred(),
)
);
}
/**
* Ensure that untrashed friends posts go back to published.
*
* @param string $new_status The new status of the post being restored.
* @param int $post_id The ID of the post being restored.
* @param string $previous_status The status of the post at the point where it was trashed.
*/
public function untrash_post_status( $new_status, $post_id, $previous_status ) {
if ( ! in_array( get_post_type( $post_id ), apply_filters( 'friends_frontend_post_types', array() ), true ) ) {
return $new_status;
}
return 'publish';
}
/**
* Load the template for /friends
*
* @param string $template The original template intended to load.
* @return string The new template to be loaded.
*/
public function template_override( $template ) {
if ( ! Friends::on_frontend() ) {
return $template;
}
if ( isset( $_GET['refresh'] ) ) {
add_filter( 'notify_about_new_friend_post', '__return_false', 999 );
add_filter(
'wp_feed_options',
function ( $feed ) {
$feed->enable_cache( false );
}
);
$this->friends->feed->retrieve_friend_posts( true );
}
global $args;
$args = array(
'friends' => $this->friends,
'friend_user' => $this->author,
'frontend_default_view' => get_option( 'friends_frontend_default_view', 'expanded' ),
'blocks-everywhere' => get_user_option( 'friends_blocks_everywhere' ),
);
if ( isset( $_GET['in_reply_to'] ) && wp_parse_url( $_GET['in_reply_to'] ) ) {
$args['in_reply_to'] = $args['friends']->frontend->get_in_reply_to_metadata( $_GET['in_reply_to'] );
}
return Friends::template_loader()->get_template_part( 'frontend/index', null, $args, false );
}
/**
* Modify the Friends page title depending on context, for example add an author name or post format.
*
* @param string $title The original title.
*
* @return string The modified title.
*/
public function header_widget_title( $title ) {
$title = '' . esc_html( $title ) . '';
if ( $this->author ) {
$title .= ' » ' . '' . esc_html( $this->author->display_name ) . '';
}
if ( $this->post_format ) {
$post_formats = get_post_format_strings();
$title .= ' » ' . $post_formats[ $this->post_format ];
}
return $title;
}
/**
* Output a link, potentially augmented with authication information.
*
* @param string $url The url.
* @param string $text The link text.
* @param array $html_attributes HTML attributes.
* @param User $friend_user The friend user.
*/
public function link( $url, $text, array $html_attributes = array(), User $friend_user = null ) {
echo wp_kses(
self::get_link( $url, $text, $html_attributes, $friend_user ),
array(
'a' => array(
'href' => array(),
'title' => array(),
'target' => array(),
'rel' => array(),
'class' => array(),
'style' => array(),
'data-nonce' => array(),
'data-cnonce' => array(),
'data-token' => array(),
'data-friend' => array(),
'data-id' => array(),
'data-url' => array(),
),
'span' => array( 'class' => array() ),
)
);
}
/**
* Get a link, potentially augmented with authication information.
*
* @param string $url The url.
* @param string $text The link text.
* @param array $html_attributes HTML attributes.
* @param User $friend_user The friend user.
*
* @return string The link.
*/
public static function get_link( $url, $text, array $html_attributes = array(), User $friend_user = null ) {
if ( is_null( $friend_user ) ) {
$friend_user = new User( get_the_author_meta( 'ID' ) );
}
if ( $friend_user->is_friend_url( $url ) && $friend_user->is_valid_friend() ) {
$html_attributes['target'] = '_blank';
$html_attributes['rel'] = 'noopener noreferrer';
if ( ! isset( $html_attributes['class'] ) ) {
$html_attributes['class'] = '';
}
$html_attributes['class'] = trim( $html_attributes['class'] . ' friends-auth-link' );
if ( ! isset( $html_attributes['dashicon_back'] ) ) {
$html_attributes['dashicon_back'] = 'admin-users';
}
$html_attributes['data-token'] = $friend_user->get_friend_auth();
$html_attributes['data-nonce'] = wp_create_nonce( 'auth-link-' . $url );
$html_attributes['data-friend'] = $friend_user->user_login;
}
$link = ' $value ) {
if ( ! in_array( $name, array( 'title', 'target', 'rel', 'class', 'style', 'data-nonce', 'data-cnonce', 'data-token', 'data-friend', 'data-id', 'data-url' ) ) ) {
continue;
}
$link .= ' ' . $name . '="' . esc_attr( $value ) . '"';
}
$link .= '>';
if ( isset( $html_attributes['dashicon_front'] ) ) {
$link .= '';
}
$link .= esc_html( $text );
if ( isset( $html_attributes['dashicon_back'] ) ) {
$link .= '';
}
$link .= '';
return $link;
}
/**
* Don't show the edit link for friend posts.
*
* @param string $link The edit link.
* @return string|bool The edit link or false.
*/
public function friend_post_edit_link( $link ) {
global $post;
if ( $post && in_array( $post->post_type, apply_filters( 'friends_frontend_post_types', array() ), true ) ) {
if ( Friends::on_frontend() ) {
$new_link = false;
} else {
$new_link = get_the_guid( $post );
}
/**
* Allow overriding the link for editing friend posts.
*
* By default on the Frontend, a post cannot be edited because $new_link is false.
*
* Example:
*
* ```php
* add_filter( 'friend_post_edit_link', function( $link, $original_link ) {
* if ( ! $link ) {
* $link = $original_link; // always allow editing.
* }
* return $link;
* }, 10, 2 );
* ```
*/
return apply_filters( 'friend_post_edit_link', $new_link, $link );
}
return $link;
}
/**
* Link friend posts to the remote site.
*
* @param string $post_link The post's permalink.
* @param \WP_Post $post The post in question.
* @reeturn string The overriden post link.
*/
public function friend_post_link( $post_link, \WP_Post $post ) {
if ( $post && in_array( $post->post_type, apply_filters( 'friends_frontend_post_types', array() ), true ) ) {
return get_the_guid( $post );
}
return $post_link;
}
/**
* Potentially override the post author name with metadata.
*
* @param string $overridden_author_name The already overridden author name.
* @param string $author_name The author name.
* @param int $post_id The post id.
*
* @return string The modified author name.
*/
public function override_author_name( $overridden_author_name, $author_name, $post_id ) {
if ( $overridden_author_name && $overridden_author_name !== $author_name ) {
return $overridden_author_name;
}
$override_author_name = get_post_meta( $post_id, 'author', true );
if ( $override_author_name ) {
return $override_author_name;
}
return $author_name;
}
/**
* Render the Friends OPML
*
* @param bool $only_public Only public feed URLs.
*/
protected function render_opml( $only_public = false ) {
$user = wp_get_current_user();
// translators: %s is a name.
$title = sprintf( __( "%s' Subscriptions", 'friends' ), $user->display_name );
$filename = 'friends-';
if ( ! $only_public ) {
$title = __( 'My Friends', 'friends' );
$filename .= 'private-';
}
$filename .= $user->user_login . '.opml';
$feeds = array();
$users = array();
$friend_users = new User_Query( array( 'role__in' => array( 'friend', 'acquaintance', 'friend_request', 'subscription' ) ) );
foreach ( $friend_users->get_results() as $friend_user ) {
$role = $friend_user->get_role_name( true, 9 );
if ( $only_public ) {
$role = 'Feeds';
}
if ( ! isset( $users[ $role ] ) ) {
$users[ $role ] = array();
}
$users[ $role ][] = $friend_user;
}
ksort( $users );
foreach ( $users as $role => $friend_users ) {
foreach ( $friend_users as $friend_user ) {
$user_feeds = $friend_user->get_active_feeds();
$need_local_feed = false;
foreach ( $user_feeds as $feed ) {
switch ( $feed->get_mime_type() ) {
case 'application/atom+xml':
case 'application/atomxml':
case 'application/rss+xml':
case 'application/rssxml':
break;
default:
$need_local_feed = true;
break 2;
}
}
if ( $need_local_feed && ! $only_public ) {
$user_feeds = array_slice( $user_feeds, 0, 1 );
}
$user = array(
'friend_user' => $friend_user,
'feeds' => array(),
);
$html_url = $friend_user->user_url;
foreach ( $user_feeds as $feed ) {
$type = 'rss';
$feed_title = $friend_user->display_name;
if ( ! $only_public ) {
$html_url = $feed->get_local_html_url();
}
if ( $need_local_feed ) {
if ( $only_public ) {
// Cannot create a public URL.
continue;
}
$xml_url = $feed->get_local_url() . '?auth=' . $_GET['auth'];
} else {
if ( $only_public ) {
$xml_url = $feed->get_url();
} else {
$xml_url = $feed->get_private_url( YEAR_IN_SECONDS );
}
if ( 'application/atom+xml' === $feed->get_mime_type() ) {
$type = 'atom';
}
}
$user['feeds'][] = array(
'xml_url' => $xml_url,
'html_url' => $html_url,
'title' => $feed_title,
'type' => $type,
);
}
if ( ! empty( $user['feeds'] ) ) {
if ( ! isset( $feeds[ $role ] ) ) {
$feeds[ $role ] = array();
}
$feeds[ $role ][] = $user;
}
}
}
Friends::template_loader()->get_template_part(
'admin/opml',
null,
array(
'title' => $title,
'feeds' => $feeds,
'filename' => $filename,
)
);
exit;
}
private function has_required_priviledges() {
if ( Friends::is_main_user() ) {
return true;
}
if ( is_multisite() ) {
if ( is_user_member_of_blog( get_current_user_id(), get_current_blog_id() ) ) {
return true;
}
if ( is_super_admin( get_current_user_id() ) ) {
// Super admins would count as administrators.
return false;
}
}
if ( current_user_can( 'manage_options' ) ) {
return true;
}
return false;
}
/**
* Modify the main query for the /friends page
*
* @param \WP_Query $query The main query.
* @return \WP_Query The modified main query.
*/
public function friend_posts_query( $query ) {
global $wp_query, $wp, $authordata;
if ( $wp_query !== $query || $query->is_admin() || $query->is_home() ) {
return $query;
}
$pagename = '';
if ( isset( $wp_query->query['pagename'] ) ) {
$pagename = $wp_query->query['pagename'];
} elseif ( isset( $wp_query->query['name'] ) ) {
$pagename = $wp_query->query['name'];
}
$pagename_parts = explode( '/', trim( $pagename, '/' ) );
$is_friends = array_shift( $pagename_parts );
if ( 'friends' !== $is_friends ) {
return $query;
}
// Not available for the general public or friends.
$viewable = $this->has_required_priviledges() && Friends::on_frontend();
if ( $query->is_feed() ) {
// Feeds can be viewed through extra authentication.
if ( $this->friends->access_control->private_rss_is_authenticated() ) {
$viewable = true;
} elseif ( isset( $wp_query->query['pagename'] ) ) {
if ( apply_filters( 'friends_friend_feed_viewable', false, isset( $pagename_parts[0] ) ? $pagename_parts[0] : false ) ) {
$viewable = true;
}
}
}
if ( ! $viewable && isset( $wp_query->query['pagename'] ) ) {
if ( apply_filters( 'friends_friend_posts_query_viewable', false, isset( $pagename_parts[0] ) ? $pagename_parts[0] : false ) ) {
$viewable = true;
}
}
$page_id = get_query_var( 'page' );
if ( isset( $_GET['share'] ) ) {
$share_hash = hash( 'crc32b', apply_filters( 'friends_share_salt', wp_salt( 'nonce' ), $page_id ) . $page_id );
if ( $_GET['share'] === $share_hash ) {
$viewable = true;
}
}
if ( ! $viewable ) {
if ( $query->is_feed() ) {
status_header( 404 );
$query->set_404();
} elseif ( ! Friends::on_frontend() ) {
if ( count( $pagename_parts ) > 0 ) {
wp_safe_redirect( home_url( '/friends/' ) );
exit;
}
} elseif ( ! Friends::is_main_user() ) {
wp_die( __( 'You are not allowed to view this page.', 'friends' ) );
}
return $query;
}
// Don't let the Post Kinds plugin interfere with this query.
remove_action( 'pre_get_posts', array( 'Kind_Taxonomy', 'kind_firehose_query' ), 99 );
switch_to_locale( get_user_locale() );
$tax_query = array();
$post_format = null;
while ( $pagename_parts ) {
$pagename_part = $pagename_parts[0];
$current_part = array_shift( $pagename_parts );
if ( 'reaction' === substr( $current_part, 0, 8 ) && strlen( $current_part ) > 8 ) {
$reaction = Reactions::validate_emoji( substr( $current_part, 8 ) );
if ( ! $reaction ) {
continue;
}
$this->reaction = $reaction;
if ( ! empty( $tax_query ) ) {
$tax_query['relation'] = 'AND';
}
$tax_query[] = array(
'taxonomy' => 'friend-reaction-' . get_current_user_id(),
'field' => 'slug',
'terms' => array( substr( $current_part, 8 ) ),
);
continue;
}
switch ( $current_part ) {
case 'opml':
return $this->render_opml( isset( $_REQUEST['public'] ) );
case 'type':
$post_format = array_shift( $pagename_parts );
$tax_query = $this->friends->wp_query_get_post_format_tax_query( $tax_query, explode( ',', $post_format ) );
if ( $tax_query ) {
$this->post_format = $post_format;
}
break;
default: // Maybe an author.
$author = User::get_by_username( $current_part );
if ( false === $author || is_wp_error( $author ) ) {
if ( $query->is_feed() ) {
status_header( 404 );
$query->set_404();
return $query;
}
wp_safe_redirect( home_url( '/friends/' ) );
exit;
}
$this->author = $author;
break;
}
}
$this->is_friends_page = true;
$query->is_friends_page = true;
$query->is_singular = false;
$query->is_single = false;
$query->queried_object = null;
$query->queried_object_id = null;
$post_types = apply_filters( 'friends_frontend_post_types', array() );
if ( 'status' === $post_format ) {
// Show your own posts on the status feed.
$post_types[] = 'post';
}
$query->set( 'post_type', $post_types );
$query->set( 'tax_query', $tax_query );
if ( ( isset( $_GET['share'] ) && $_GET['share'] === $share_hash ) || $viewable ) {
$post_status = array( 'publish', 'private' );
if ( isset( $_GET['show-hidden'] ) ) {
$post_status[] = 'trash';
}
$query->set( 'post_status', $post_status );
}
$query->is_page = false;
$query->is_comments_feed = false;
$query->set( 'pagename', null );
if ( 'collapsed' === get_option( 'friends_frontend_default_view', 'expanded' ) && get_option( 'posts_per_page' ) < 20 ) {
if ( 'status' === $post_format ) {
$query->set( 'posts_per_page', 30 );
} else {
$query->set( 'posts_per_page', 20 );
}
}
if ( $page_id ) {
$query->set( 'page_id', $page_id );
if ( ! $this->author ) {
$post = get_post( $page_id );
$author = User::get_post_author( $post );
if ( false !== $author ) {
$this->author = $author;
}
}
$query->is_single = true;
$query->is_singular = true;
$wp->set_query_var( 'page', null );
$wp->set_query_var( 'page_id', $page_id );
}
if ( $this->author ) {
if ( $this->author instanceof User ) {
$authordata = $this->author;
$this->author->modify_query_by_author( $query );
if ( ! $page_id ) {
$query->is_author = true;
}
} else {
$this->author = null;
}
}
if ( ! $query->is_singular && ! $query->is_author ) {
// This is the main friends page.
$hide_from_friends_page = get_user_option( 'friends_hide_from_friends_page' );
$hide_from_friends_page = array_diff( array_map( 'intval', (array) $hide_from_friends_page ), array( 0 ) );
if ( $hide_from_friends_page ) {
$query->set( 'author__not_in', $hide_from_friends_page );
}
}
return $query;
}
}