| 1 |
<?php |
| 2 |
/** |
| 3 |
* Plugin Name: Hum |
| 4 |
* Plugin URI: https://github.com/willnorris/wordpress-hum |
| 5 |
* Description: Personal URL shortener for WordPress |
| 6 |
* Author: Will Norris |
| 7 |
* Author URI: https://willnorris.com/ |
| 8 |
* Version: 1.2.7 |
| 9 |
* License: MIT |
| 10 |
* License URI: http://opensource.org/licenses/MIT |
| 11 |
* Text Domain: hum |
| 12 |
*/ |
| 13 |
|
| 14 |
class Hum { |
| 15 |
|
| 16 |
public function __construct() { |
| 17 |
add_action( 'init', array( $this, 'init' ) ); |
| 18 |
add_action( 'init', array( $this, 'rewrite_rules' ) ); |
| 19 |
|
| 20 |
register_activation_hook( __FILE__, array( $this, 'flush_rewrite_rules' ) ); |
| 21 |
register_deactivation_hook( __FILE__, 'flush_rewrite_rules' ); |
| 22 |
} |
| 23 |
|
| 24 |
/** |
| 25 |
* Initialize the plugin, registering WordPress hooks. |
| 26 |
*/ |
| 27 |
public function init() { |
| 28 |
load_plugin_textdomain( 'hum', null, basename( dirname( __FILE__ ) ) ); |
| 29 |
|
| 30 |
// if you have hum installed, then you probably actually care about short |
| 31 |
// links, so we'll add it to the admin menu bar. |
| 32 |
add_action( 'admin_bar_menu', 'wp_admin_bar_shortlink_menu', 90 ); |
| 33 |
|
| 34 |
add_action( 'query_vars', array( $this, 'query_vars' ) ); |
| 35 |
add_action( 'parse_request', array( $this, 'parse_request' ) ); |
| 36 |
add_filter( 'hum_redirect', array( $this, 'redirect_request' ), 10, 3 ); |
| 37 |
add_filter( 'hum_redirect_i', array( $this, 'redirect_request_i' ), 10, 2 ); |
| 38 |
add_filter( 'hum_process_redirect', array( $this, 'process_redirect' ), 10, 2 ); |
| 39 |
add_filter( 'pre_option_hum_shortlink_base', array( $this, 'config_shortlink_base' ) ); |
| 40 |
add_filter( 'pre_get_shortlink', array( $this, 'get_shortlink' ), 10, 4 ); |
| 41 |
add_filter( 'template_redirect', array( $this, 'legacy_redirect' ) ); |
| 42 |
add_filter( 'hum_legacy_id', array( $this, 'legacy_ftl_id' ), 10, 2 ); |
| 43 |
add_action( 'atom_entry', array( $this, 'shortlink_atom_entry' ) ); |
| 44 |
|
| 45 |
// Admin Settings |
| 46 |
add_action( 'admin_init', array( $this, 'admin_init' ) ); |
| 47 |
add_action( 'admin_menu', array( $this, 'admin_menu' ) ); |
| 48 |
add_filter( 'manage_edit-post_columns', array( $this, 'add_post_column' ), 10, 1 ); |
| 49 |
add_filter( 'manage_edit-page_columns', array( $this, 'add_post_column' ), 10, 1 ); |
| 50 |
add_action( 'manage_posts_custom_column', array( $this, 'add_posts_custom_column' ), 10, 2 ); |
| 51 |
add_action( 'manage_pages_custom_column', array( $this, 'add_posts_custom_column' ), 10, 2 ); |
| 52 |
} |
| 53 |
|
| 54 |
/** |
| 55 |
* Accept hum query variables. |
| 56 |
*/ |
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public function query_vars( $vars ) { |
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$vars[] = 'hum'; |
| 59 |
return $vars; |
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} |
| 61 |
|
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/** |
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* Parse request for shortlink. This is the main entry point for handling |
| 64 |
* short URLs. |
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* |
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* @uses apply_filters() Calls 'hum_redirect' filter |
| 67 |
* @uses apply_filters() Calls 'hum_process_redirect' filter |
| 68 |
* |
| 69 |
* @param WP $wp the WordPress environment for the request |
| 70 |
*/ |
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public function parse_request( $wp ) { |
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if ( array_key_exists( 'hum', $wp->query_vars ) ) { |
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$hum_path = $wp->query_vars['hum']; |
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if ( strpos( $hum_path, '/' ) !== false ) { |
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list($type, $id) = explode( '/', $hum_path, 2 ); |
| 76 |
} else { |
| 77 |
$type = $hum_path; |
| 78 |
$id = null; |
| 79 |
} |
| 80 |
|
| 81 |
$url = apply_filters( 'hum_redirect', null, $type, $id ); |
| 82 |
|
| 83 |
// hum hasn't handled the request yet, so try again but strip common |
| 84 |
// punctuation that might appear after a URL in written text: . , ) |
| 85 |
if ( ! $url ) { |
| 86 |
$clean_id = preg_replace( '/[\.,\)]+$/', '', $id ); |
| 87 |
if ( $id !== $clean_id ) { |
| 88 |
$url = apply_filters( 'hum_redirect', null, $type, $clean_id ); |
| 89 |
} |
| 90 |
} |
| 91 |
|
| 92 |
if ( $url ) { |
| 93 |
do_action( 'hum_process_redirect', $url, $id ); |
| 94 |
} |
| 95 |
|
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// hum didn't handle request, so issue 404. |
| 97 |
// manually setting query vars like this feels very fragile, but |
| 98 |
// $wp_query->set_404() doesn't do what we need here. |
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$wp->query_vars['error'] = '404'; |
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} |
| 101 |
} |
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|
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/** |
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* Process the redirect. |
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* |
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* @param string $url the permalink of the post |
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* @param string $id the requested post ID |
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*/ |
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public function process_redirect( $url, $id ) { |
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wp_redirect( $url, 301 ); |
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exit; |
| 112 |
} |
| 113 |
|
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/** |
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* Get the short URL types that are handled locally by WordPress. |
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* |
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* @uses apply_filters() Calls 'hum_local_types' with array of local types |
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* |
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* @return array local types |
| 120 |
*/ |
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public function local_types() { |
| 122 |
$local_types = array( 'b', 't', 'a', 'p' ); |
| 123 |
return apply_filters( 'hum_local_types', $local_types ); |
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} |
| 125 |
|
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/** |
| 127 |
* Attempt to handle redirect for the current shortlink. |
| 128 |
* |
| 129 |
* This redirects shortlinks that are for content hosted directly within |
| 130 |
* WordPress. The 'id' portion of these URLs is expected to be the |
| 131 |
* sexagesimal post ID. |
| 132 |
* |
| 133 |
* This also allows for simple redirect rules for shortlink prefixes. Users |
| 134 |
* can provide a filter to perform simple URL redirect for a given type |
| 135 |
* prefix. For example, to redirect all /w/ shortlinks to your personal |
| 136 |
* PBworks wiki, you could use: |
| 137 |
* |
| 138 |
* add_filter('hum_redirect_base_w', |
| 139 |
* create_function('', 'return "http://willnorris.pbworks.com/";')); |
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* |
| 141 |
* @uses apply_filters() Calls 'hum_redirect_{$type}' action |
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* @uses apply_filters() Calls 'hum_redirect_base_{$type}' filter on redirect base URL |
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* |
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* @param string $url the short URL |
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* @param string $type the content-type prefix |
| 146 |
* @param string $id the requested post ID |
| 147 |
*/ |
| 148 |
public function redirect_request( $url, $type, $id ) { |
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// locally hosted content |
| 150 |
$local_types = $this->local_types(); |
| 151 |
if ( in_array( $type, $local_types, true ) ) { |
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$p = sxg_to_num( $id ); |
| 153 |
if ( $p ) { |
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$url = get_permalink( $p ); |
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} |
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} |
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|
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// simple redirects for entire base type |
| 159 |
if ( ! $url ) { |
| 160 |
$url = apply_filters( "hum_redirect_base_{$type}", false ); |
| 161 |
if ( $url ) { |
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$url = trailingslashit( $url ) . $id; |
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} |
| 164 |
} |
| 165 |
|
| 166 |
$url = apply_filters( "hum_redirect_{$type}", $url, $id ); |
| 167 |
return $url; |
| 168 |
} |
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|
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/** |
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* Handles /i/ URLs that have ISBN or ASIN subpaths by redirecting to Amazon. |
| 172 |
* |
| 173 |
* @uses apply_filters() Calls 'hum_redirect_i_{$subtype}' action |
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* @uses apply_filters() Calls 'amazon_domain' filter |
| 175 |
* @uses apply_filters() Calls 'amazon_affiliate_id' filter |
| 176 |
* |
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* @param string $url the short URL |
| 178 |
* @param string $path subpath of URL (after /i/) |
| 179 |
*/ |
| 180 |
public function redirect_request_i( $url, $path ) { |
| 181 |
list( $subtype, $id ) = explode( '/', $path, 2 ); |
| 182 |
|
| 183 |
if ( $subtype ) { |
| 184 |
switch ( $subtype ) { |
| 185 |
case 'a': |
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case 'asin': |
| 187 |
case 'i': |
| 188 |
case 'isbn': |
| 189 |
$amazon_domain = apply_filters( 'amazon_domain', 'www.amazon.com' ); |
| 190 |
$amazon_id = apply_filters( 'amazon_affiliate_id', false ); |
| 191 |
if ( $amazon_id ) { |
| 192 |
// valid partner shortlink, checked by |
| 193 |
// https://partnernet.amazon.de/gp/associates/network/tools/link-checker/main.html |
| 194 |
$url = 'http://' . $amazon_domain . '/dp/product/' . $id . '?tag=' . $amazon_id; |
| 195 |
} else { |
| 196 |
$url = 'http://' . $amazon_domain . '/dp/product/' . $id; |
| 197 |
} |
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break; |
| 199 |
} |
| 200 |
$url = apply_filters( "hum_redirect_i_{$subtype}", $url, $id ); |
| 201 |
} |
| 202 |
return $url; |
| 203 |
} |
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|
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/** |
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* Add rewrite rules for hum shortlinks. |
| 207 |
*/ |
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public function rewrite_rules() { |
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$local_types = $this->local_types(); |
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$local_types = implode( '', $local_types ); |
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|
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add_rewrite_rule( "([{$local_types}i](\/.*)?$)", 'index.php?hum=$matches[1]', 'top' ); |
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} |
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|
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/** |
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* Add rewrite rules for hum shortlinks. |
| 217 |
*/ |
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public function flush_rewrite_rules() { |
| 219 |
$this->rewrite_rules(); |
| 220 |
flush_rewrite_rules(); |
| 221 |
} |
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|
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/** |
| 224 |
* Get the base URL for hum shortlinks. Defaults to the WordPress home url. |
| 225 |
* Users can define HUM_SHORTLINK_BASE or provide a filter to use a custom |
| 226 |
* domain for shortlinks. |
| 227 |
* |
| 228 |
* @uses apply_filters() Calls 'hum_shortlink_base' filter on base URL |
| 229 |
* |
| 230 |
* @return string |
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*/ |
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public function shortlink_base() { |
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$base = get_option( 'hum_shortlink_base' ); |
| 234 |
if ( empty( $base ) ) { |
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$base = home_url(); |
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} |
| 237 |
return apply_filters( 'hum_shortlink_base', $base ); |
| 238 |
} |
| 239 |
|
| 240 |
/** |
| 241 |
* Allow the constant named 'HUM_SHORTLINK_BASE' to override the base URL for shortlinks. |
| 242 |
* |
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* @param string $url the short URL |
| 244 |
*/ |
| 245 |
public function config_shortlink_base( $url = '' ) { |
| 246 |
if ( defined( 'HUM_SHORTLINK_BASE' ) ) { |
| 247 |
return untrailingslashit( HUM_SHORTLINK_BASE ); |
| 248 |
} |
| 249 |
return $url; |
| 250 |
} |
| 251 |
|
| 252 |
/** |
| 253 |
* Get the shortlink for a post, page, attachment, or blog. |
| 254 |
* |
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* @param string $link the current shortlink for the post |
| 256 |
* @param int $id post ID |
| 257 |
* @param string $context |
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* @param boolean $allow_slugs |
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* @return string |
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*/ |
| 261 |
public function get_shortlink( $link, $id, $context, $allow_slugs ) { |
| 262 |
$post_id = 0; |
| 263 |
if ( 'query' === $context ) { |
| 264 |
if ( is_front_page() ) { |
| 265 |
$link = trailingslashit( $this->shortlink_base() ); |
| 266 |
} elseif ( is_singular() ) { |
| 267 |
$post_id = get_queried_object_id(); |
| 268 |
} |
| 269 |
} elseif ( 'post' === $context ) { |
| 270 |
$post = get_post( $id ); |
| 271 |
$post_id = $post->ID; |
| 272 |
} |
| 273 |
|
| 274 |
if ( ! empty( $post_id ) ) { |
| 275 |
$type = $this->type_prefix( $post_id ); |
| 276 |
$sxg_id = num_to_sxg( $post_id ); |
| 277 |
$link = trailingslashit( $this->shortlink_base() ) . $type . '/' . $sxg_id; |
| 278 |
} |
| 279 |
|
| 280 |
return $link; |
| 281 |
} |
| 282 |
|
| 283 |
/** |
| 284 |
* Get the content-type prefix for the specified post. |
| 285 |
* |
| 286 |
* @see http://ttk.me/w/Whistle#design |
| 287 |
* @uses apply_filters() Calls 'hum_type_prefix' on the content type prefix |
| 288 |
* |
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* @param int|object $post A post |
| 290 |
* @return string the content type prefix for the post |
| 291 |
*/ |
| 292 |
public function type_prefix( $post ) { |
| 293 |
$prefix = 'b'; |
| 294 |
|
| 295 |
$post_type = get_post_type( $post ); |
| 296 |
|
| 297 |
if ( 'attachment' === $post_type ) { |
| 298 |
// check if $post is a WP_Post or an ID |
| 299 |
if ( is_numeric( $post ) ) { |
| 300 |
$post_id = $post; |
| 301 |
} else { |
| 302 |
$post_id = $post->ID; |
| 303 |
} |
| 304 |
|
| 305 |
$mime_type = get_post_mime_type( $post_id ); |
| 306 |
$media_type = preg_replace( '/(\/[a-zA-Z]+)/i', '', $mime_type ); |
| 307 |
|
| 308 |
switch ( $media_type ) { |
| 309 |
case 'audio': |
| 310 |
case 'video': |
| 311 |
$prefix = 'a'; |
| 312 |
break; |
| 313 |
case 'image': |
| 314 |
$prefix = 'p'; |
| 315 |
break; |
| 316 |
} |
| 317 |
|
| 318 |
// @todo add support for slides |
| 319 |
} else { |
| 320 |
$post_format = get_post_format( $post ); |
| 321 |
switch ( $post_format ) { |
| 322 |
case 'aside': |
| 323 |
case 'status': |
| 324 |
case 'link': |
| 325 |
$prefix = 't'; |
| 326 |
break; |
| 327 |
case 'audio': |
| 328 |
case 'video': |
| 329 |
$prefix = 'a'; |
| 330 |
break; |
| 331 |
case 'photo': |
| 332 |
case 'gallery': |
| 333 |
case 'image': |
| 334 |
$prefix = 'p'; |
| 335 |
break; |
| 336 |
} |
| 337 |
} |
| 338 |
|
| 339 |
return apply_filters( 'hum_type_prefix', $prefix, $post ); |
| 340 |
} |
| 341 |
|
| 342 |
/** |
| 343 |
* Support redirects from legacy short URL schemes. This allows users to migrate from other |
| 344 |
* shortlink generaters, but still have hum support the old URLs. |
| 345 |
* |
| 346 |
* @uses do_action() Calls 'hum_legacy_id' with the post ID and shortlink path. |
| 347 |
*/ |
| 348 |
public function legacy_redirect() { |
| 349 |
if ( is_404() ) { |
| 350 |
global $wp; |
| 351 |
$post_id = apply_filters( 'hum_legacy_id', 0, $wp->request ); |
| 352 |
if ( $post_id ) { |
| 353 |
$url = get_permalink( $post_id ); |
| 354 |
if ( $url ) { |
| 355 |
$url = apply_filters( 'hum_legacy_redirect', $url ); |
| 356 |
wp_redirect( $url, 301 ); |
| 357 |
exit; |
| 358 |
} |
| 359 |
} |
| 360 |
} |
| 361 |
} |
| 362 |
|
| 363 |
/** |
| 364 |
* Handle shortlinks generated by Friendly Twitter Links, which take the form |
| 365 |
* /{id}, where {id} can be the base10 or base32 post ID. |
| 366 |
* |
| 367 |
* @param int $id post ID to filter on |
| 368 |
* @param string $path URL path (without preceding slash) of the request |
| 369 |
* |
| 370 |
* @return string ID of post to redirect to |
| 371 |
*/ |
| 372 |
public function legacy_ftl_id( $id, $path ) { |
| 373 |
if ( is_numeric( $path ) ) { |
| 374 |
$post = get_post( $path ); |
| 375 |
} else { |
| 376 |
$post_id = base_convert( preg_replace( '/[^0-9a-fA-F]/', '', $path ), 32, 10 ); |
| 377 |
$post = get_post( $post_id ); |
| 378 |
} |
| 379 |
|
| 380 |
if ( $post ) { |
| 381 |
$id = $post->ID; |
| 382 |
} |
| 383 |
|
| 384 |
return $id; |
| 385 |
} |
| 386 |
|
| 387 |
|
| 388 |
// Admin Settings |
| 389 |
|
| 390 |
/** |
| 391 |
* Register admin settings for Hum. |
| 392 |
*/ |
| 393 |
public function admin_init() { |
| 394 |
register_setting( 'general', 'hum_shortlink_base' ); |
| 395 |
} |
| 396 |
|
| 397 |
/** |
| 398 |
* Add admin settings fields for Hum. |
| 399 |
*/ |
| 400 |
public function admin_menu() { |
| 401 |
add_settings_field( 'hum_shortlink_base', __( 'Shortlink Base (URL)', 'hum' ), array( $this, 'admin_shortlink_base' ), 'general' ); |
| 402 |
} |
| 403 |
|
| 404 |
/** |
| 405 |
* Admin UI for setting the shortlink base URL. |
| 406 |
*/ |
| 407 |
public function admin_shortlink_base() { |
| 408 |
?> |
| 409 |
<input name="hum_shortlink_base" type="text" id="hum_shortlink_base" |
| 410 |
value="<?php form_option( 'hum_shortlink_base' ); ?>" |
| 411 |
<?php disabled( defined( 'HUM_SHORTLINK_BASE' ) ); ?> |
| 412 |
class="regular-text code<?php if ( defined( 'HUM_SHORTLINK_BASE' ) ) { echo ' disabled'; } ?>" /> |
| 413 |
<p class="description"> |
| 414 |
<?php _e( 'If you have a custom domain you want to use for shortlinks, enter the address here.', 'hum' ); ?> |
| 415 |
</p> |
| 416 |
|
| 417 |
<script type="text/javascript"> |
| 418 |
// move adjacent to other URL properties |
| 419 |
jQuery('input#hum_shortlink_base').parents('tr').insertAfter( jQuery('input#home').parents('tr') ); |
| 420 |
</script> |
| 421 |
<?php |
| 422 |
} |
| 423 |
|
| 424 |
/** |
| 425 |
* Add shortlink <link /> to Atom-Entry. |
| 426 |
*/ |
| 427 |
public function shortlink_atom_entry() { |
| 428 |
$shortlink = wp_get_shortlink(); |
| 429 |
if ( $shortlink ) { |
| 430 |
echo "\t\t" . '<link rel="shortlink" href="' . esc_attr( $shortlink ) . '" />' . PHP_EOL; |
| 431 |
} |
| 432 |
} |
| 433 |
|
| 434 |
/** |
| 435 |
* Show shortlink column. |
| 436 |
* |
| 437 |
* @param array $columns The list of columns. |
| 438 |
*/ |
| 439 |
public function add_post_column( $columns ) { |
| 440 |
$reorderes_columns = array(); |
| 441 |
foreach ( $columns as $key => $value ) { |
| 442 |
if ( 'date' === $key ) { |
| 443 |
$reorderes_columns['shortlink'] = esc_html__( 'Shortlink', 'hum' ); |
| 444 |
} |
| 445 |
$reorderes_columns[ $key ] = $value; |
| 446 |
} |
| 447 |
|
| 448 |
return $reorderes_columns; |
| 449 |
} |
| 450 |
|
| 451 |
/** |
| 452 |
* Generate shortlink column. |
| 453 |
* |
| 454 |
* @param string $column_name The culumn name. |
| 455 |
* @param string $post_id The post id. |
| 456 |
*/ |
| 457 |
public function add_posts_custom_column( $column_name, $post_id ) { |
| 458 |
if ( 'shortlink' === $column_name ) { |
| 459 |
printf( '<small>%s</small>', wp_get_shortlink( $post_id ) ); |
| 460 |
} |
| 461 |
} |
| 462 |
} |
| 463 |
|
| 464 |
new Hum; |
| 465 |
|
| 466 |
|
| 467 |
// New Base 60 - see http://ttk.me/w/NewBase60 |
| 468 |
// |
| 469 |
// slightly modified from Cassis Project (http://cassisproject.com/) |
| 470 |
// Copyright 2010 Tantek Çelik, used with permission under CC0 license (http://git.io/tZ8fjw) |
| 471 |
// |
| 472 |
// @codingStandardsIgnoreStart |
| 473 |
if ( ! function_exists( 'num_to_sxg' ) ) : |
| 474 |
/** |
| 475 |
* Convert base-10 number to sexagesimal. |
| 476 |
*/ |
| 477 |
function num_to_sxg($n) { |
| 478 |
$s = ""; |
| 479 |
$m = "0123456789ABCDEFGHJKLMNPQRSTUVWXYZ_abcdefghijkmnopqrstuvwxyz"; |
| 480 |
if ($n===null || $n===0) { return 0; } |
| 481 |
while ($n>0) { |
| 482 |
$d = $n % 60; |
| 483 |
$s = $m[$d] . $s; |
| 484 |
$n = ($n-$d)/60; |
| 485 |
} |
| 486 |
return $s; |
| 487 |
} |
| 488 |
endif; |
| 489 |
|
| 490 |
|
| 491 |
if ( ! function_exists( 'sxg_to_num' ) ) : |
| 492 |
/** |
| 493 |
* Convert sexagesimal to base-10 number. |
| 494 |
*/ |
| 495 |
function sxg_to_num( $s ) { |
| 496 |
$n = 0; |
| 497 |
$j = strlen($s); |
| 498 |
for ($i=0;$i<$j;$i++) { // iterate from first to last char of $s |
| 499 |
$c = ord($s[$i]); // put current ASCII of char into $c |
| 500 |
if ($c>=48 && $c<=57) { $c=$c-48; } |
| 501 |
else if ($c>=65 && $c<=72) { $c-=55; } |
| 502 |
else if ($c==73 || $c==108) { $c=1; } // typo capital I, lowercase l to 1 |
| 503 |
else if ($c>=74 && $c<=78) { $c-=56; } |
| 504 |
else if ($c==79) { $c=0; } // error correct typo capital O to 0 |
| 505 |
else if ($c>=80 && $c<=90) { $c-=57; } |
| 506 |
else if ($c==95) { $c=34; } // underscore |
| 507 |
else if ($c>=97 && $c<=107) { $c-=62; } |
| 508 |
else if ($c>=109 && $c<=122) { $c-=63; } |
| 509 |
else { $c = 0; } // treat all other noise as 0 |
| 510 |
$n = 60*$n + $c; |
| 511 |
} |
| 512 |
return $n; |
| 513 |
} |
| 514 |
endif; |
| 515 |
// @codingStandardsIgnoreEnd |
| 516 |
|
