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/blog/wp-includes/wpmu-functions.php

https://bitbucket.org/malathisuji/nrcfoss-au-tamil-computing-activities
PHP | 2407 lines | 1871 code | 418 blank | 118 comment | 517 complexity | 00b864d7e0aa2473ec11c92de45ec13b MD5 | raw file
Possible License(s): GPL-2.0, AGPL-1.0, LGPL-2.1

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  1. <?php
    2. 

  2. /*
    3. 

  3. 	Helper functions for WPMU
    4. 

  4. */
    5. 

  5. function load_muplugin_textdomain($domain, $path = false) {
    6. 

  6. 	$locale = get_locale();
    7. 

  7. 	if ( empty($locale) )
    8. 

  8. 		$locale = 'en_US';
    9. 

  9. 

  10. 	if ( false === $path )
    11. 

  11. 		$path = WPMU_PLUGIN_DIR;
    12. 

  12. 

  13. 	$mofile = WPMU_PLUGIN_DIR . "/$domain-$locale.mo";
    14. 

  14. 	load_textdomain($domain, $mofile);
    15. 

  15. }
    16. 

  16. 

  17. function wpmu_update_blogs_date() {
    18. 

  18. 	global $wpdb;
    19. 

  19. 

  20. 	$wpdb->update( $wpdb->blogs, array('last_updated' => current_time('mysql', true)), array('blog_id' => $wpdb->blogid) );
    21. 

  21. 	refresh_blog_details( $wpdb->blogid );
    22. 

  22. 

  23. 	do_action( 'wpmu_blog_updated', $wpdb->blogid );
    24. 

  24. }
    25. 

  25. 

  26. function get_blogaddress_by_id( $blog_id ) {
    27. 

  27. 	$bloginfo = get_blog_details( (int) $blog_id, false ); // only get bare details!
    28. 

  28. 	return clean_url("http://" . $bloginfo->domain . $bloginfo->path);
    29. 

  29. }
    30. 

  30. 

  31. function get_blogaddress_by_name( $blogname ) {
    32. 

  32. 	global $current_site;
    33. 

  33. 

  34. 	if( defined( "VHOST" ) && constant( "VHOST" ) == 'yes' ) {
    35. 

  35. 		if( $blogname == 'main' )
    36. 

  36. 			$blogname = 'www';
    37. 

  37. 		return clean_url( "http://" . $blogname . "." . $current_site->domain . $current_site->path );
    38. 

  38. 	} else {
    39. 

  39. 		return clean_url( "http://" . $current_site->domain . $current_site->path . $blogname . '/' );
    40. 

  40. 	}
    41. 

  41. }
    42. 

  42. 

  43. function get_blogaddress_by_domain( $domain, $path ){
    44. 

  44. 	if( defined( "VHOST" ) && constant( "VHOST" ) == 'yes' ) {
    45. 

  45. 		$url = "http://".$domain.$path;
    46. 

  46. 	} else {
    47. 

  47. 		if( $domain != $_SERVER['HTTP_HOST'] ) {
    48. 

  48. 			$blogname = substr( $domain, 0, strpos( $domain, '.' ) );
    49. 

  49. 			if( $blogname != 'www.' ) {
    50. 

  50. 				$url = 'http://' . substr( $domain, strpos( $domain, '.' ) + 1 ) . $path . $blogname . '/';
    51. 

  51. 			} else { // we're installing the main blog
    52. 

  52. 				$url = 'http://' . substr( $domain, strpos( $domain, '.' ) + 1 ) . $path;
    53. 

  53. 			}
    54. 

  54. 		} else { // main blog
    55. 

  55. 			$url = 'http://' . $domain . $path;
    56. 

  56. 		}
    57. 

  57. 	}
    58. 

  58. 	return clean_url($url);
    59. 

  59. }
    60. 

  60. 

  61. function get_sitestats() {
    62. 

  62. 	global $wpdb;
    63. 

  63. 

  64. 	$stats['blogs'] = get_blog_count();
    65. 

  65. 

  66. 	$count_ts = get_site_option( "get_user_count_ts" );
    67. 

  67. 	if( time() - $count_ts > 3600 ) {
    68. 

  68. 		$count = $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->users}" );
    69. 

  69. 		update_site_option( "user_count", $count );
    70. 

  70. 		update_site_option( "user_count_ts", time() );
    71. 

  71. 	} else {
    72. 

  72. 		$count = get_site_option( "user_count" );
    73. 

  73. 	}
    74. 

  74. 	$stats['users'] = $count;
    75. 

  75. 	return $stats;
    76. 

  76. }
    77. 

  77. 

  78. function get_admin_users_for_domain( $sitedomain = '', $path = '' ) {
    79. 

  79. 	global $wpdb;
    80. 

  80. 	
    81. 

  81. 	if( $sitedomain == '' ) {
    82. 

  82. 		$site_id = $wpdb->siteid;
    83. 

  83. 	} else {
    84. 

  84. 		$site_id = $wpdb->get_var( $wpdb->prepare("SELECT id FROM $wpdb->site WHERE domain = %s AND path = %s", $sitedomain, $path) );
    85. 

  85. 	}
    86. 

  86. 

  87. 	if( $site_id != false ) {
    88. 

  88. 		return $wpdb->get_results( $wpdb->prepare("SELECT u.ID, u.user_login, u.user_pass FROM $wpdb->users AS u, $wpdb->sitemeta AS sm WHERE sm.meta_key = 'admin_user_id' AND u.ID = sm.meta_value AND sm.site_id = %d", $site_id), ARRAY_A );
    89. 

  89. 	}
    90. 

  90. 	return false;
    91. 

  91. }
    92. 

  92. 

  93. function get_user_details( $username ) {
    94. 

  94. 	global $wpdb;
    95. 

  95. 	return $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->users WHERE user_login = %s", $username) );
    96. 

  96. }
    97. 

  97. 

  98. function is_main_blog() {
    99. 

  99. 	global $current_blog, $current_site;
    100. 

  100. 	if( $current_blog->domain == $current_site->domain && $current_blog->path == $current_site->path )
    101. 

  101. 		return true;
    102. 

  102. 	return false;
    103. 

  103. }
    104. 

  104. 

  105. function get_id_from_blogname( $name ) {
    106. 

  106. 	global $wpdb, $current_site;
    107. 

  107. 	$blog_id = wp_cache_get( "get_id_from_blogname_" . $name, 'blog-details' );
    108. 

  108. 	if( $blog_id )
    109. 

  109. 		return $blog_id;
    110. 

  110. 

  111. 	if( constant( 'VHOST' ) == 'yes' ) {
    112. 

  112. 		$domain = $name . '.' . $current_site->domain;
    113. 

  113. 		$path = $current_site->path;
    114. 

  114. 	} else {
    115. 

  115. 		$domain = $current_site->domain;
    116. 

  116. 		$path = $current_site->path . $name . '/';
    117. 

  117. 	}
    118. 

  118. 	$blog_id = $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM {$wpdb->blogs} WHERE domain = %s AND path = %s", $domain, $path) );
    119. 

  119. 	wp_cache_set( 'get_id_from_blogname_' . $name, $blog_id, 'blog-details' );
    120. 

  120. 	return $blog_id;
    121. 

  121. }
    122. 

  122. 

  123. function get_blog_details( $id, $getall = true ) {
    124. 

  124. 	global $wpdb;
    125. 

  125. 

  126. 	if( !is_numeric( $id ) ) {
    127. 

  127. 		$id = get_id_from_blogname( $id );
    128. 

  128. 	}
    129. 

  129. 	$all = $getall == true ? '' : 'short';
    130. 

  130. 	$details = wp_cache_get( $id . $all, 'blog-details' );
    131. 

  131. 

  132. 	if ( $details ) {
    133. 

  133. 		if ( $details == -1 )
    134. 

  134. 			return false;
    135. 

  135. 		elseif ( !is_object($details) ) // Clear old pre-serialized objects. Cache clients do better with that.
    136. 

  136. 			wp_cache_delete( $id . $all, 'blog-details' );
    137. 

  137. 		else
    138. 

  138. 			return $details;
    139. 

  139. 	}
    140. 

  140. 

  141. 	$details = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->blogs WHERE blog_id = %d /* get_blog_details */", $id) );
    142. 

  142. 	if ( !$details ) {
    143. 

  143. 		wp_cache_set( $id . $all, -1, 'blog-details' );
    144. 

  144. 		return false;
    145. 

  145. 	}
    146. 

  146. 

  147. 	if ( !$getall ) {
    148. 

  148. 		wp_cache_set( $id . $all, $details, 'blog-details' );
    149. 

  149. 		return $details;
    150. 

  150. 	}
    151. 

  151. 

  152. 	$wpdb->suppress_errors();
    153. 

  153. 	switch_to_blog( $id );
    154. 

  154. 	$details->blogname   = get_option( 'blogname' );
    155. 

  155. 	$details->siteurl    = get_option( 'siteurl' );
    156. 

  156. 	$details->post_count = get_option( 'post_count' );
    157. 

  157. 	restore_current_blog();
    158. 

  158. 	$wpdb->suppress_errors( false );
    159. 

  159. 

  160. 	$details = apply_filters('blog_details', $details);
    161. 

  161. 

  162. 	wp_cache_set( $id . $all, $details, 'blog-details' );
    163. 

  163. 

  164. 	$key = md5( $details->domain . $details->path );
    165. 

  165. 	wp_cache_set( $key, $details, 'blog-lookup' );
    166. 

  166. 

  167. 	return $details;
    168. 

  168. }
    169. 

  169. 

  170. function refresh_blog_details( $id ) {
    171. 

  171. 	$id = (int) $id;
    172. 

  172. 	$details = get_blog_details( $id, false );
    173. 

  173. 

  174. 	wp_cache_delete( $id , 'blog-details' );
    175. 

  175. 	wp_cache_delete( $id . 'short' , 'blog-details' );
    176. 

  176. 	wp_cache_delete( md5( $details->domain . $details->path )  , 'blog-lookup' );
    177. 

  177. 	wp_cache_delete( 'current_blog_' . $details->domain, 'site-options' );
    178. 

  178. 	wp_cache_delete( 'current_blog_' . $details->domain . $details->path, 'site-options' );
    179. 

  179. }
    180. 

  180. 

  181. function get_current_user_id() {
    182. 

  182. 	global $current_user;
    183. 

  183. 	return $current_user->ID;
    184. 

  184. }
    185. 

  185. 

  186. function is_site_admin( $user_login = false ) {
    187. 

  187. 	global $current_user;
    188. 

  188. 

  189. 	if ( !$current_user && !$user_login )
    190. 

  190. 		return false;
    191. 

  191. 

  192. 	if ( $user_login ) {
    193. 

  193. 		$user_login = sanitize_user( $user_login );
    194. 

  194. 	} elseif( isset( $current_user->user_login ) ) {
    195. 

  195. 		$user_login = $current_user->user_login;
    196. 

  196. 	} else {
    197. 

  197. 		return false;
    198. 

  198. 	}
    199. 

  199. 

  200. 	$site_admins = get_site_option( 'site_admins', array('admin') );
    201. 

  201. 	if( is_array( $site_admins ) && in_array( $user_login, $site_admins ) )
    202. 

  202. 		return true;
    203. 

  203. 

  204. 	return false;
    205. 

  205. }
    206. 

  206. 

  207. /**
    208. 

  208.  * Retrieve option value based on setting name and blog_id.
    209. 

  209.  *
    210. 

  210.  * If the option does not exist or does not have a value, then the return value
    211. 

  211.  * will be false. This is useful to check whether you need to install an option
    212. 

  212.  * and is commonly used during installation of plugin options and to test
    213. 

  213.  * whether upgrading is required.
    214. 

  214.  *
    215. 

  215.  * There is a filter called 'blog_option_$option' with the $option being
    216. 

  216.  * replaced with the option name. The filter takes two parameters. $value and
    217. 

  217.  * $blog_id. It returns $value.
    218. 

  218.  * The 'option_$option' filter in get_option() is not called.
    219. 

  219.  *
    220. 

  220.  * @since NA
    221. 

  221.  * @package WordPress MU
    222. 

  222.  * @subpackage Option
    223. 

  223.  * @uses apply_filters() Calls 'blog_option_$optionname' with the option name value.
    224. 

  224.  *
    225. 

  225.  * @param int $blog_id is the id of the blog.
    226. 

  226.  * @param string $setting Name of option to retrieve. Should already be SQL-escaped
    227. 

  227.  * @param string $default (optional) Default value returned if option not found.
    228. 

  228.  * @return mixed Value set for the option.
    229. 

  229.  */
    230. 

  230. function get_blog_option( $blog_id, $setting, $default = false ) {
    231. 

  231. 	global $wpdb;
    232. 

  232. 

  233. 	$key = $blog_id."-".$setting."-blog_option";
    234. 

  234. 	$value = wp_cache_get( $key, "site-options" );
    235. 

  235. 	if ( $value == null ) {
    236. 

  236. 		$blog_prefix = $wpdb->get_blog_prefix( $blog_id );
    237. 

  237. 		$row = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$blog_prefix}options WHERE option_name = %s", $setting ) );
    238. 

  238. 		if ( is_object( $row ) ) { // Has to be get_row instead of get_var because of funkiness with 0, false, null values
    239. 

  239. 			$value = $row->option_value;
    240. 

  240. 			if ( $value == false ) {
    241. 

  241. 				wp_cache_set( $key, 'falsevalue', 'site-options' );
    242. 

  242. 			} else {
    243. 

  243. 				wp_cache_set( $key, $value, 'site-options' );
    244. 

  244. 			}
    245. 

  245. 		} else { // option does not exist, so we must cache its non-existence
    246. 

  246. 			wp_cache_set( $key, 'noop', 'site-options' );
    247. 

  247. 			$value = $default;
    248. 

  248. 		}
    249. 

  249. 	} elseif( $value == 'noop' ) {
    250. 

  250. 		$value = $default;
    251. 

  251. 	} elseif( $value == 'falsevalue' ) {
    252. 

  252. 		$value = false;
    253. 

  253. 	}
    254. 

  254. 	// If home is not set use siteurl.
    255. 

  255. 	if ( 'home' == $setting && '' == $value )
    256. 

  256. 		return get_blog_option( $blog_id, 'siteurl' );
    257. 

  257. 

  258. 	if ( 'siteurl' == $setting || 'home' == $setting || 'category_base' == $setting )
    259. 

  259. 		$value = preg_replace( '|/+$|', '', $value );
    260. 

  260. 

  261. 	if (! @unserialize( $value ) )
    262. 

  262. 		$value = stripslashes( $value );
    263. 

  263. 

  264. 	return apply_filters( 'blog_option_' . $setting, maybe_unserialize( $value ), $blog_id );
    265. 

  265. }
    266. 

  266. 

  267. function add_blog_option( $id, $key, $value ) {
    268. 

  268. 	$id = (int) $id;
    269. 

  269. 	
    270. 

  270. 	switch_to_blog($id);
    271. 

  271. 	add_option( $key, $value );
    272. 

  272. 	restore_current_blog();
    273. 

  273. 	wp_cache_set( $id."-".$key."-blog_option", $value, 'site-options' );
    274. 

  274. }
    275. 

  275. 

  276. function delete_blog_option( $id, $key ) {
    277. 

  277. 	$id = (int) $id;
    278. 

  278. 	
    279. 

  279. 	switch_to_blog($id);
    280. 

  280. 	delete_option( $key );
    281. 

  281. 	restore_current_blog();
    282. 

  282. 	wp_cache_set( $id."-".$key."-blog_option", '', 'site-options' );
    283. 

  283. }
    284. 

  284. 

  285. function update_blog_option( $id, $key, $value, $refresh = true ) {
    286. 

  286. 	$id = (int) $id;
    287. 

  287. 	
    288. 

  288. 	switch_to_blog($id);
    289. 

  289. 	update_option( $key, $value );
    290. 

  290. 	restore_current_blog();
    291. 

  291. 

  292. 	if( $refresh == true )
    293. 

  293. 		refresh_blog_details( $id );
    294. 

  294. 	wp_cache_set( $id."-".$key."-blog_option", $value, 'site-options');
    295. 

  295. }
    296. 

  296. 

  297. function switch_to_blog( $new_blog ) {
    298. 

  298. 	global $wpdb, $table_prefix, $blog_id, $switched, $switched_stack, $wp_roles, $current_user, $wp_object_cache;
    299. 

  299. 

  300. 	if ( empty($new_blog) )
    301. 

  301. 		$new_blog = $blog_id;
    302. 

  302. 

  303. 	if ( empty($switched_stack) )
    304. 

  304. 		$switched_stack = array();
    305. 

  305. 

  306. 	$switched_stack[] = $blog_id;
    307. 

  307. 

  308. 	/* If we're switching to the same blog id that we're on, 
    309. 

  309. 	* set the right vars, do the associated actions, but skip 
    310. 

  310. 	* the extra unnecessary work */
    311. 

  311. 	if ( $blog_id == $new_blog ) {
    312. 

  312. 		do_action( 'switch_blog', $blog_id, $blog_id );
    313. 

  313. 		$switched = true;
    314. 

  314. 		return true;
    315. 

  315. 	}
    316. 

  316. 

  317. 	$wpdb->set_blog_id($new_blog);
    318. 

  318. 	$table_prefix = $wpdb->prefix;
    319. 

  319. 	$prev_blog_id = $blog_id;
    320. 

  320. 	$blog_id = $new_blog;
    321. 

  321. 

  322. 	if( is_object( $wp_roles ) ) {
    323. 

  323. 		$wpdb->suppress_errors();
    324. 

  324. 		if ( method_exists( $wp_roles ,'_init' ) ) {
    325. 

  325. 			$wp_roles->_init();
    326. 

  326. 		} elseif( method_exists( $wp_roles, '__construct' ) ) {
    327. 

  327. 			$wp_roles->__construct();
    328. 

  328. 		}
    329. 

  329. 		$wpdb->suppress_errors( false );
    330. 

  330. 	}
    331. 

  331. 

  332. 	if ( is_object( $current_user ) )
    333. 

  333. 		$current_user->_init_caps();
    334. 

  334. 

  335. 	if ( is_object( $wp_object_cache ) ) {
    336. 

  336. 		$global_groups = $wp_object_cache->global_groups;
    337. 

  337. 	} else {
    338. 

  338. 		$global_groups = false;
    339. 

  339. 	}
    340. 

  340. 	wp_cache_init();
    341. 

  341. 	if ( function_exists('wp_cache_add_global_groups') ) {
    342. 

  342. 		if ( is_array( $global_groups ) ) {
    343. 

  343. 			wp_cache_add_global_groups( $global_groups );
    344. 

  344. 		} else {
    345. 

  345. 			wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'site-transient', 'global-posts' ) );
    346. 

  346. 		}
    347. 

  347. 		wp_cache_add_non_persistent_groups(array( 'comment', 'counts', 'plugins' ));
    348. 

  348. 	}
    349. 

  349. 

  350. 	do_action('switch_blog', $blog_id, $prev_blog_id);
    351. 

  351. 	$switched = true;
    352. 

  352. 	return true;
    353. 

  353. }
    354. 

  354. 

  355. function restore_current_blog() {
    356. 

  356. 	global $table_prefix, $wpdb, $blog_id, $switched, $switched_stack, $wp_roles, $current_user, $wp_object_cache;
    357. 

  357. 

  358. 	if ( !$switched )
    359. 

  359. 		return false;
    360. 

  360. 

  361. 	if ( !is_array( $switched_stack ) )
    362. 

  362. 		return false;
    363. 

  363. 

  364. 	$blog = array_pop( $switched_stack );
    365. 

  365. 	if ( $blog_id == $blog ) {
    366. 

  366. 		do_action( 'switch_blog', $blog, $blog );
    367. 

  367. 		/* If we still have items in the switched stack, consider ourselves still 'switched' */
    368. 

  368. 		$switched = ( is_array( $switched_stack ) && count( $switched_stack ) > 0 );
    369. 

  369. 		return true;
    370. 

  370. 	}
    371. 

  371. 

  372. 	$wpdb->set_blog_id($blog);
    373. 

  373. 	$prev_blog_id = $blog_id;
    374. 

  374. 	$blog_id = $blog;
    375. 

  375. 	$table_prefix = $wpdb->prefix;
    376. 

  376. 

  377. 	if( is_object( $wp_roles ) ) {
    378. 

  378. 		$wpdb->suppress_errors();
    379. 

  379. 		if ( method_exists( $wp_roles ,'_init' ) ) {
    380. 

  380. 			$wp_roles->_init();
    381. 

  381. 		} elseif( method_exists( $wp_roles, '__construct' ) ) {
    382. 

  382. 			$wp_roles->__construct();
    383. 

  383. 		}
    384. 

  384. 		$wpdb->suppress_errors( false );
    385. 

  385. 	}
    386. 

  386. 

  387. 	if ( is_object( $current_user ) )
    388. 

  388. 		$current_user->_init_caps();
    389. 

  389. 

  390. 	if ( is_object( $wp_object_cache ) ) {
    391. 

  391. 		$global_groups = $wp_object_cache->global_groups;
    392. 

  392. 	} else {
    393. 

  393. 		$global_groups = false;
    394. 

  394. 	}
    395. 

  395. 	wp_cache_init();
    396. 

  396. 	if ( function_exists('wp_cache_add_global_groups') ) {
    397. 

  397. 		if ( is_array( $global_groups ) ) {
    398. 

  398. 			wp_cache_add_global_groups( $global_groups );
    399. 

  399. 		} else {
    400. 

  400. 			wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'site-transient' ) );
    401. 

  401. 		}
    402. 

  402. 		wp_cache_add_non_persistent_groups(array( 'comment', 'counts', 'plugins' ));
    403. 

  403. 	}
    404. 

  404. 

  405. 	do_action('switch_blog', $blog_id, $prev_blog_id);
    406. 

  406. 

  407. 	/* If we still have items in the switched stack, consider ourselves still 'switched' */ 
    408. 

  408. 	$switched = ( is_array( $switched_stack ) && count( $switched_stack ) > 0 );
    409. 

  409. 	return true;
    410. 

  410. }
    411. 

  411. 

  412. function get_blogs_of_user( $id, $all = false ) {
    413. 

  413. 	global $wpdb;
    414. 

  414. 

  415. 	$cache_suffix = $all ? '_all' : '_short';
    416. 

  416. 	$return = wp_cache_get( 'blogs_of_user_' . $id . $cache_suffix, 'users' );
    417. 

  417. 	if ( $return ) {
    418. 

  418. 		return apply_filters( 'get_blogs_of_user', $return, $id, $all );
    419. 

  419. 	}
    420. 

  420. 

  421. 	$user = get_userdata( (int) $id );
    422. 

  422. 	if ( !$user )
    423. 

  423. 		return false;
    424. 

  424. 

  425. 	$blogs = $match = array();
    426. 

  426. 	foreach ( (array) $user as $key => $value ) {
    427. 

  427. 		if ( false !== strpos( $key, '_capabilities') && 0 === strpos( $key, $wpdb->base_prefix ) && preg_match( '/' . $wpdb->base_prefix . '(\d+)_capabilities/', $key, $match ) ) {
    428. 

  428. 			$blog = get_blog_details( $match[1] );
    429. 

  429. 			if ( $blog && isset( $blog->domain ) && ( $all == true || $all == false && ( $blog->archived == 0 && $blog->spam == 0 && $blog->deleted == 0 ) ) ) {
    430. 

  430. 				$blogs[$match[1]]->userblog_id = $match[1];
    431. 

  431. 				$blogs[$match[1]]->blogname    = $blog->blogname;
    432. 

  432. 				$blogs[$match[1]]->domain      = $blog->domain;
    433. 

  433. 				$blogs[$match[1]]->path        = $blog->path;
    434. 

  434. 				$blogs[$match[1]]->site_id     = $blog->site_id;
    435. 

  435. 				$blogs[$match[1]]->siteurl     = $blog->siteurl;
    436. 

  436. 			}
    437. 

  437. 		}
    438. 

  438. 	}
    439. 

  439. 

  440. 	wp_cache_add( 'blogs_of_user_' . $id . $cache_suffix, $blogs, 'users', 5 );
    441. 

  441. 	return apply_filters( 'get_blogs_of_user', $blogs, $id, $all );
    442. 

  442. }
    443. 

  443. 

  444. function get_active_blog_for_user( $user_id ) { // get an active blog for user - either primary blog or from blogs list
    445. 

  445. 	global $wpdb;
    446. 

  446. 	$blogs = get_blogs_of_user( $user_id );
    447. 

  447. 	if ( empty( $blogs ) ) {
    448. 

  448. 		$details = get_dashboard_blog();
    449. 

  449. 		add_user_to_blog( $details->blog_id, $user_id, 'subscriber' );
    450. 

  450. 		update_usermeta( $user_id, 'primary_blog', $details->blog_id );
    451. 

  451. 		wp_cache_delete( $user_id, 'users' );
    452. 

  452. 		return $details;
    453. 

  453. 	}
    454. 

  454. 

  455. 	$primary_blog = get_usermeta( $user_id, "primary_blog" );
    456. 

  456. 	$details = get_dashboard_blog();
    457. 

  457. 	if ( $primary_blog ) {
    458. 

  458. 		$blogs = get_blogs_of_user( $user_id );
    459. 

  459. 		if ( isset( $blogs[ $primary_blog ] ) == false ) {
    460. 

  460. 			add_user_to_blog( $details->blog_id, $user_id, 'subscriber' );
    461. 

  461. 			update_usermeta( $user_id, 'primary_blog', $details->blog_id );
    462. 

  462. 			wp_cache_delete( $user_id, 'users' );
    463. 

  463. 		} else {
    464. 

  464. 			$details = get_blog_details( $primary_blog );
    465. 

  465. 		}
    466. 

  466. 	} else {
    467. 

  467. 		add_user_to_blog( $details->blog_id, $user_id, 'subscriber' ); // Add subscriber permission for dashboard blog
    468. 

  468. 		update_usermeta( $user_id, 'primary_blog', $details->blog_id );
    469. 

  469. 	}
    470. 

  470. 

  471. 	if ( ( is_object( $details ) == false ) || ( is_object( $details ) && $details->archived == 1 || $details->spam == 1 || $details->deleted == 1 ) ) {
    472. 

  472. 		$blogs = get_blogs_of_user( $user_id, true ); // if a user's primary blog is shut down, check their other blogs.
    473. 

  473. 		$ret = false;
    474. 

  474. 		if ( is_array( $blogs ) && count( $blogs ) > 0 ) {
    475. 

  475. 			foreach( (array) $blogs as $blog_id => $blog ) {
    476. 

  476. 				if ( $blog->site_id != $wpdb->siteid )
    477. 

  477. 					continue;
    478. 

  478. 				$details = get_blog_details( $blog_id );
    479. 

  479. 				if ( is_object( $details ) && $details->archived == 0 && $details->spam == 0 && $details->deleted == 0 ) {
    480. 

  480. 					$ret = $blog;
    481. 

  481. 					$changed = false;
    482. 

  482. 					if ( get_usermeta( $user_id , 'primary_blog' ) != $blog_id ) {
    483. 

  483. 						update_usermeta( $user_id, 'primary_blog', $blog_id );
    484. 

  484. 						$changed = true;
    485. 

  485. 					}
    486. 

  486. 					if ( !get_usermeta($user_id , 'source_domain') ) {
    487. 

  487. 						update_usermeta( $user_id, 'source_domain', $blog->domain );
    488. 

  488. 						$changed = true;
    489. 

  489. 					}
    490. 

  490. 					if ( $changed )
    491. 

  491. 						wp_cache_delete( $user_id, 'users' );
    492. 

  492. 					break;
    493. 

  493. 				}
    494. 

  494. 			}
    495. 

  495. 		} else {
    496. 

  496. 			// Should never get here
    497. 

  497. 			$dashboard_blog = get_dashboard_blog();
    498. 

  498. 			add_user_to_blog( $dashboard_blog->blog_id, $user_id, 'subscriber' ); // Add subscriber permission for dashboard blog
    499. 

  499. 			update_usermeta( $user_id, 'primary_blog', $dashboard_blog->blog_id );
    500. 

  500. 			return $dashboard_blog;
    501. 

  501. 		}
    502. 

  502. 		return $ret;
    503. 

  503. 	} else {
    504. 

  504. 		return $details;
    505. 

  505. 	}
    506. 

  506. }
    507. 

  507. 

  508. function is_user_member_of_blog( $user_id, $blog_id = 0 ) {
    509. 

  509. 	$user_id = (int) $user_id;
    510. 

  510. 	$blog_id = (int) $blog_id;
    511. 

  511. 	
    512. 

  512. 	if( $blog_id == 0 ) {
    513. 

  513. 		global $wpdb;
    514. 

  514. 		$blog_id = $wpdb->blogid;
    515. 

  515. 	}
    516. 

  516. 	
    517. 

  517. 	$blogs = get_blogs_of_user( $user_id );
    518. 

  518. 	if( is_array( $blogs ) ) {
    519. 

  519. 		return array_key_exists( $blog_id, $blogs );
    520. 

  520. 	} else {
    521. 

  521. 		return false;
    522. 

  522. 	}
    523. 

  523. }
    524. 

  524. 

  525. function is_archived( $id ) {
    526. 

  526. 	return get_blog_status($id, 'archived');
    527. 

  527. }
    528. 

  528. 

  529. function update_archived( $id, $archived ) {
    530. 

  530. 	update_blog_status($id, 'archived', $archived);
    531. 

  531. 	return $archived;
    532. 

  532. }
    533. 

  533. 

  534. function update_blog_status( $id, $pref, $value, $refresh = 1 ) {
    535. 

  535. 	global $wpdb;
    536. 

  536. 

  537. 	if ( !in_array( $pref, array( 'site_id', 'domain', 'path', 'registered', 'last_updated', 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id') ) )
    538. 

  538. 		return $value;
    539. 

  539. 

  540. 	$wpdb->update( $wpdb->blogs, array($pref => $value, 'last_updated' => current_time('mysql', true)), array('blog_id' => $id) );
    541. 

  541. 	if( $refresh == 1 )
    542. 

  542. 		refresh_blog_details($id);
    543. 

  543. 

  544. 	if( $pref == 'spam' ) {
    545. 

  545. 		if( $value == 1 ) {
    546. 

  546. 			do_action( "make_spam_blog", $id );
    547. 

  547. 		} else {
    548. 

  548. 			do_action( "make_ham_blog", $id );
    549. 

  549. 		}
    550. 

  550. 	}
    551. 

  551. 

  552. 	return $value;
    553. 

  553. }
    554. 

  554. 

  555. function get_blog_status( $id, $pref ) {
    556. 

  556. 	global $wpdb;
    557. 

  557. 

  558. 	$details = get_blog_details( $id, false );
    559. 

  559. 	if( $details ) {
    560. 

  560. 		return $details->$pref;
    561. 

  561. 	}
    562. 

  562. 	return $wpdb->get_var( $wpdb->prepare("SELECT $pref FROM {$wpdb->blogs} WHERE blog_id = %d", $id) );
    563. 

  563. }
    564. 

  564. 

  565. function get_last_updated( $deprecated = '', $start = 0, $quantity = 40 ) {
    566. 

  566. 	global $wpdb;
    567. 

  567. 	return $wpdb->get_results( $wpdb->prepare("SELECT blog_id, domain, path FROM $wpdb->blogs WHERE site_id = %d AND public = '1' AND archived = '0' AND mature = '0' AND spam = '0' AND deleted = '0' AND last_updated != '0000-00-00 00:00:00' ORDER BY last_updated DESC limit %d, %d", $wpdb->siteid, $start, $quantity ) , ARRAY_A );
    568. 

  568. }
    569. 

  569. 

  570. function get_most_active_blogs( $num = 10, $display = true ) {
    571. 

  571. 	$most_active = get_site_option( "most_active" );
    572. 

  572. 	$update = false;
    573. 

  573. 	if( is_array( $most_active ) ) {
    574. 

  574. 		if( ( $most_active['time'] + 60 ) < time() ) { // cache for 60 seconds.
    575. 

  575. 			$update = true;
    576. 

  576. 		}
    577. 

  577. 	} else {
    578. 

  578. 		$update = true;
    579. 

  579. 	}
    580. 

  580. 

  581. 	if( $update == true ) {
    582. 

  582. 		unset( $most_active );
    583. 

  583. 		$blogs = get_blog_list( 0, 'all', false ); // $blog_id -> $details
    584. 

  584. 		if( is_array( $blogs ) ) {
    585. 

  585. 			reset( $blogs );
    586. 

  586. 			foreach ( (array) $blogs as $key => $details ) {
    587. 

  587. 				$most_active[ $details['blog_id'] ] = $details['postcount'];
    588. 

  588. 				$blog_list[ $details['blog_id'] ] = $details; // array_slice() removes keys!!
    589. 

  589. 			}
    590. 

  590. 			arsort( $most_active );
    591. 

  591. 			reset( $most_active );
    592. 

  592. 			foreach ( (array) $most_active as $key => $details ) {
    593. 

  593. 				$t[ $key ] = $blog_list[ $key ];
    594. 

  594. 			}
    595. 

  595. 			unset( $most_active );
    596. 

  596. 			$most_active = $t;
    597. 

  597. 		}
    598. 

  598. 		update_site_option( "most_active", $most_active );
    599. 

  599. 	}
    600. 

  600. 

  601. 	if( $display == true ) {
    602. 

  602. 		if( is_array( $most_active ) ) {
    603. 

  603. 			reset( $most_active );
    604. 

  604. 			foreach ( (array) $most_active as $key => $details ) {
    605. 

  605. 				$url = clean_url("http://" . $details['domain'] . $details['path']);
    606. 

  606. 				echo "<li>" . $details['postcount'] . " <a href='$url'>$url</a></li>";
    607. 

  607. 			}
    608. 

  608. 		}
    609. 

  609. 	}
    610. 

  610. 	return array_slice( $most_active, 0, $num );
    611. 

  611. }
    612. 

  612. 

  613. function get_blog_list( $start = 0, $num = 10, $deprecated = '' ) {
    614. 

  614. 	global $wpdb;
    615. 

  615. 

  616. 	$blogs = get_site_option( "blog_list" );
    617. 

  617. 	$update = false;
    618. 

  618. 	if( is_array( $blogs ) ) {
    619. 

  619. 		if( ( $blogs['time'] + 60 ) < time() ) { // cache for 60 seconds.
    620. 

  620. 			$update = true;
    621. 

  621. 		}
    622. 

  622. 	} else {
    623. 

  623. 		$update = true;
    624. 

  624. 	}
    625. 

  625. 

  626. 	if( $update == true ) {
    627. 

  627. 		unset( $blogs );
    628. 

  628. 		$blogs = $wpdb->get_results( $wpdb->prepare("SELECT blog_id, domain, path FROM $wpdb->blogs WHERE site_id = %d AND public = '1' AND archived = '0' AND mature = '0' AND spam = '0' AND deleted = '0' ORDER BY registered DESC", $wpdb->siteid), ARRAY_A );
    629. 

  629. 

  630. 		foreach ( (array) $blogs as $details ) {
    631. 

  631. 			$blog_list[ $details['blog_id'] ] = $details;
    632. 

  632. 			$blog_list[ $details['blog_id'] ]['postcount'] = $wpdb->get_var( "SELECT COUNT(ID) FROM " . $wpdb->base_prefix . $details['blog_id'] . "_posts WHERE post_status='publish' AND post_type='post'" );
    633. 

  633. 		}
    634. 

  634. 		unset( $blogs );
    635. 

  635. 		$blogs = $blog_list;
    636. 

  636. 		update_site_option( "blog_list", $blogs );
    637. 

  637. 	}
    638. 

  638. 

  639. 	if( false == is_array( $blogs ) )
    640. 

  640. 		return array();
    641. 

  641. 

  642. 	if( $num == 'all' ) {
    643. 

  643. 		return array_slice( $blogs, $start, count( $blogs ) );
    644. 

  644. 	} else {
    645. 

  645. 		return array_slice( $blogs, $start, $num );
    646. 

  646. 	}
    647. 

  647. }
    648. 

  648. 

  649. function get_user_count() {
    650. 

  650. 	global $wpdb;
    651. 

  651. 

  652. 	$count_ts = get_site_option( "user_count_ts" );
    653. 

  653. 	if( time() - $count_ts > 3600 ) {
    654. 

  654. 		$count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'") );
    655. 

  655. 		update_site_option( "user_count", $count );
    656. 

  656. 		update_site_option( "user_count_ts", time() );
    657. 

  657. 	}
    658. 

  658. 

  659. 	$count = get_site_option( "user_count" );
    660. 

  660. 

  661. 	return $count;
    662. 

  662. }
    663. 

  663. 

  664. function get_blog_count( $id = 0 ) {
    665. 

  665. 	global $wpdb;
    666. 

  666. 

  667. 	if( $id == 0 )
    668. 

  668. 		$id = $wpdb->siteid;
    669. 

  669. 

  670. 	$count_ts = get_site_option( "blog_count_ts" );
    671. 

  671. 	if( time() - $count_ts > 3600 ) {
    672. 

  672. 		$count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(blog_id) as c FROM $wpdb->blogs WHERE site_id = %d AND spam = '0' AND deleted = '0' and archived = '0'", $id) );
    673. 

  673. 		update_site_option( "blog_count", $count );
    674. 

  674. 		update_site_option( "blog_count_ts", time() );
    675. 

  675. 	}
    676. 

  676. 

  677. 	$count = get_site_option( "blog_count" );
    678. 

  678. 

  679. 	return $count;
    680. 

  680. }
    681. 

  681. 

  682. function get_blog_post( $blog_id, $post_id ) {
    683. 

  683. 	global $wpdb;
    684. 

  684. 

  685. 	$key = $blog_id . "-" . $post_id;
    686. 

  686. 	$post = wp_cache_get( $key, "global-posts" );
    687. 

  687. 	if( $post == false ) {
    688. 

  688. 		$post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM " . $wpdb->get_blog_prefix( $blog_id ) . "posts WHERE ID = %d", $post_id ) );
    689. 

  689. 		wp_cache_add( $key, $post, "global-posts" );
    690. 

  690. 	}
    691. 

  691. 

  692. 	return $post;
    693. 

  693. }
    694. 

  694. 

  695. function clear_global_post_cache( $post_id ) {
    696. 

  696. 	global $wpdb;
    697. 

  697. 

  698. 	wp_cache_delete( $wpdb->blogid . '-' . $post_id, 'global-posts' );
    699. 

  699. }
    700. 

  700. add_action( 'publish_post', 'clear_global_post_cache' );
    701. 

  701. add_action( 'delete_post', 'clear_global_post_cache' );
    702. 

  702. 

  703. function add_user_to_blog( $blog_id, $user_id, $role ) {
    704. 

  704. 	switch_to_blog($blog_id);
    705. 

  705. 

  706. 	$user = new WP_User($user_id);
    707. 

  707. 

  708. 	if ( empty($user) )
    709. 

  709. 		return new WP_Error('user_does_not_exist', __('That user does not exist.'));
    710. 

  710. 

  711. 	if ( !get_usermeta($user_id, 'primary_blog') ) {
    712. 

  712. 		update_usermeta($user_id, 'primary_blog', $blog_id);
    713. 

  713. 		$details = get_blog_details($blog_id);
    714. 

  714. 		update_usermeta($user_id, 'source_domain', $details->domain);
    715. 

  715. 	}
    716. 

  716. 

  717. 	$user->set_role($role);
    718. 

  718. 

  719. 	do_action('add_user_to_blog', $user_id, $role, $blog_id);
    720. 

  720. 	wp_cache_delete( $user_id, 'users' );
    721. 

  721. 	restore_current_blog();
    722. 

  722. 	return true;
    723. 

  723. }
    724. 

  724. 

  725. function remove_user_from_blog($user_id, $blog_id = '', $reassign = '') {
    726. 

  726. 	global $wpdb;
    727. 

  727. 	switch_to_blog($blog_id);
    728. 

  728. 	$user_id = (int) $user_id;
    729. 

  729. 	do_action('remove_user_from_blog', $user_id, $blog_id);
    730. 

  730. 

  731. 	// If being removed from the primary blog, set a new primary if the user is assigned
    732. 

  732. 	// to multiple blogs.
    733. 

  733. 	$primary_blog = get_usermeta($user_id, 'primary_blog');
    734. 

  734. 	if ( $primary_blog == $blog_id ) {
    735. 

  735. 		$new_id = '';
    736. 

  736. 		$new_domain = '';
    737. 

  737. 		$blogs = get_blogs_of_user($user_id);
    738. 

  738. 		foreach ( (array) $blogs as $blog ) {
    739. 

  739. 			if ( $blog->userblog_id == $blog_id )
    740. 

  740. 				continue;
    741. 

  741. 			$new_id = $blog->userblog_id;
    742. 

  742. 			$new_domain = $blog->domain;
    743. 

  743. 			break;
    744. 

  744. 		}
    745. 

  745. 

  746. 		update_usermeta($user_id, 'primary_blog', $new_id);
    747. 

  747. 		update_usermeta($user_id, 'source_domain', $new_domain);
    748. 

  748. 	}
    749. 

  749. 

  750. 	// wp_revoke_user($user_id);
    751. 

  751. 	$user = new WP_User($user_id);
    752. 

  752. 	$user->remove_all_caps();
    753. 

  753. 

  754. 	$blogs = get_blogs_of_user($user_id);
    755. 

  755. 	if ( count($blogs) == 0 ) {
    756. 

  756. 		update_usermeta($user_id, 'primary_blog', '');
    757. 

  757. 		update_usermeta($user_id, 'source_domain', '');
    758. 

  758. 	}
    759. 

  759. 

  760. 	if( $reassign != '' ) {
    761. 

  761. 		$reassign = (int) $reassign;
    762. 

  762. 		$wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id) );
    763. 

  763. 		$wpdb->query( $wpdb->prepare("UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id) );
    764. 

  764. 	}
    765. 

  765. 

  766. 	restore_current_blog();
    767. 

  767. }
    768. 

  768. 

  769. function create_empty_blog( $domain, $path, $weblog_title, $site_id = 1 ) {
    770. 

  770. 	$domain       = addslashes( $domain );
    771. 

  771. 	$weblog_title = addslashes( $weblog_title );
    772. 

  772. 

  773. 	if( empty($path) )
    774. 

  774. 		$path = '/';
    775. 

  775. 

  776. 	// Check if the domain has been used already. We should return an error message.
    777. 

  777. 	if ( domain_exists($domain, $path, $site_id) )
    778. 

  778. 		return __('error: Blog URL already taken.');
    779. 

  779. 

  780. 	// Need to backup wpdb table names, and create a new wp_blogs entry for new blog.
    781. 

  781. 	// Need to get blog_id from wp_blogs, and create new table names.
    782. 

  782. 	// Must restore table names at the end of function.
    783. 

  783. 

  784. 	if ( ! $blog_id = insert_blog($domain, $path, $site_id) )
    785. 

  785. 		return __('error: problem creating blog entry');
    786. 

  786. 

  787. 	switch_to_blog($blog_id);
    788. 

  788. 	install_blog($blog_id);
    789. 

  789. 	restore_current_blog();
    790. 

  790. 

  791. 	return $blog_id;
    792. 

  792. }
    793. 

  793. 

  794. function get_blog_permalink( $_blog_id, $post_id ) {
    795. 

  795. 	$key = "{$_blog_id}-{$post_id}-blog_permalink";
    796. 

  796. 	$link = wp_cache_get( $key, 'site-options' );
    797. 

  797. 	if( $link == false ) {
    798. 

  798. 		switch_to_blog( $_blog_id );
    799. 

  799. 		$link = get_permalink( $post_id );
    800. 

  800. 		restore_current_blog();
    801. 

  801. 		wp_cache_add( $key, $link, 'site-options', 360 );
    802. 

  802. 	}
    803. 

  803. 	return $link;
    804. 

  804. }
    805. 

  805. 

  806. function get_blog_id_from_url( $domain, $path = '/' ) {
    807. 

  807. 	global $wpdb;
    808. 

  808. 

  809. 	$domain = strtolower( $wpdb->escape( $domain ) );
    810. 

  810. 	$path = strtolower( $wpdb->escape( $path ) );
    811. 

  811. 	$id = wp_cache_get( md5( $domain . $path ), 'blog-id-cache' );
    812. 

  812. 

  813. 	if( $id == -1 ) { // blog does not exist
    814. 

  814. 		return 0;
    815. 

  815. 	} elseif( $id ) {
    816. 

  816. 		return (int)$id;
    817. 

  817. 	}
    818. 

  818. 

  819. 	$id = $wpdb->get_var( "SELECT blog_id FROM $wpdb->blogs WHERE domain = '$domain' and path = '$path' /* get_blog_id_from_url */" );
    820. 

  820. 

  821. 	if ( !$id ) {
    822. 

  822. 		wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
    823. 

  823. 		return false;
    824. 

  824. 	}
    825. 

  825. 	wp_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' );
    826. 

  826. 

  827. 	return $id;
    828. 

  828. }
    829. 

  829. 

  830. // wpmu admin functions
    831. 

  831. 

  832. function wpmu_admin_do_redirect( $url = '' ) {
    833. 

  833. 	$ref = '';
    834. 

  834. 	if ( isset( $_GET['ref'] ) )
    835. 

  835. 		$ref = $_GET['ref'];
    836. 

  836. 	if ( isset( $_POST['ref'] ) )
    837. 

  837. 		$ref = $_POST['ref'];
    838. 

  838. 

  839. 	if( $ref ) {
    840. 

  840. 		$ref = wpmu_admin_redirect_add_updated_param( $ref );
    841. 

  841. 		wp_redirect( $ref );
    842. 

  842. 		exit();
    843. 

  843. 	}
    844. 

  844. 	if( empty( $_SERVER['HTTP_REFERER'] ) == false ) {
    845. 

  845. 		wp_redirect( $_SERVER['HTTP_REFERER'] );
    846. 

  846. 		exit();
    847. 

  847. 	}
    848. 

  848. 

  849. 	$url = wpmu_admin_redirect_add_updated_param( $url );
    850. 

  850. 	if( isset( $_GET['redirect'] ) ) {
    851. 

  851. 		if( substr( $_GET['redirect'], 0, 2 ) == 's_' ) {
    852. 

  852. 			$url .= "&action=blogs&s=". wp_specialchars( substr( $_GET['redirect'], 2 ) );
    853. 

  853. 		}
    854. 

  854. 	} elseif( isset( $_POST['redirect'] ) ) {
    855. 

  855. 		$url = wpmu_admin_redirect_add_updated_param( $_POST['redirect'] );
    856. 

  856. 	}
    857. 

  857. 	wp_redirect( $url );
    858. 

  858. 	exit();
    859. 

  859. }
    860. 

  860. 

  861. function wpmu_admin_redirect_add_updated_param( $url = '' ) {
    862. 

  862. 	if( strpos( $url, 'updated=true' ) === false ) {
    863. 

  863. 		if( strpos( $url, '?' ) === false ) {
    864. 

  864. 			return $url . '?updated=true';
    865. 

  865. 		} else {
    866. 

  866. 			return $url . '&updated=true';
    867. 

  867. 		}
    868. 

  868. 	}
    869. 

  869. 	return $url;
    870. 

  870. }
    871. 

  871. 

  872. function is_blog_user( $blog_id = 0 ) {
    873. 

  873. 	global $current_user, $wpdb;
    874. 

  874. 

  875. 	if ( !$blog_id )
    876. 

  876. 		$blog_id = $wpdb->blogid;
    877. 

  877. 

  878. 	$cap_key = $wpdb->base_prefix . $blog_id . '_capabilities';
    879. 

  879. 

  880. 	if ( is_array($current_user->$cap_key) && in_array(1, $current_user->$cap_key) )
    881. 

  881. 		return true;
    882. 

  882. 

  883. 	return false;
    884. 

  884. }
    885. 

  885. 

  886. function validate_email( $email, $check_domain = true) {
    887. 

  887.     if (ereg('^[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+'.'@'.
    888. 

  888.         '[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+\.'.
    889. 

  889.         '[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+$', $email))
    890. 

  890.     {
    891. 

  891.         if ($check_domain && function_exists('checkdnsrr')) {
    892. 

  892.             list (, $domain)  = explode('@', $email);
    893. 

  893. 

  894.             if (checkdnsrr($domain.'.', 'MX') || checkdnsrr($domain.'.', 'A')) {
    895. 

  895.                 return true;
    896. 

  896.             }
    897. 

  897.             return false;
    898. 

  898.         }
    899. 

  899.         return true;
    900. 

  900.     }
    901. 

  901.     return false;
    902. 

  902. }
    903. 

  903. 

  904. function is_email_address_unsafe( $user_email ) {
    905. 

  905. 	$banned_names = get_site_option( "banned_email_domains" );
    906. 

  906. 	if ($banned_names && !is_array( $banned_names )) { 
    907. 

  907. 		$banned_names = explode( "\n", $banned_names); 
    908. 

  908. 	} 
    909. 

  909. 	if ( is_array( $banned_names ) && empty( $banned_names ) == false ) {
    910. 

  910. 		$email_domain = strtolower( substr( $user_email, 1 + strpos( $user_email, '@' ) ) );
    911. 

  911. 		foreach( (array) $banned_names as $banned_domain ) {
    912. 

  912. 			if( $banned_domain == '' )
    913. 

  913. 				continue;
    914. 

  914. 			if (
    915. 

  915. 				strstr( $email_domain, $banned_domain ) ||
    916. 

  916. 				(
    917. 

  917. 					strstr( $banned_domain, '/' ) &&
    918. 

  918. 					preg_match( $banned_domain, $email_domain )
    919. 

  919. 				)
    920. 

  920. 			)
    921. 

  921. 			return true;
    922. 

  922. 		}
    923. 

  923. 	}
    924. 

  924. 	return false;
    925. 

  925. }
    926. 

  926. 

  927. function wpmu_validate_user_signup($user_name, $user_email) {
    928. 

  928. 	global $wpdb;
    929. 

  929. 

  930. 	$errors = new WP_Error();
    931. 

  931. 

  932. 	$user_name = preg_replace( "/\s+/", '', sanitize_user( $user_name, true ) );
    933. 

  933. 	$user_email = sanitize_email( $user_email );
    934. 

  934. 

  935. 	if ( empty( $user_name ) )
    936. 

  936. 	   	$errors->add('user_name', __("Please enter a username"));
    937. 

  937. 

  938. 	$maybe = array();
    939. 

  939. 	preg_match( "/[a-z0-9]+/", $user_name, $maybe );
    940. 

  940. 

  941. 	if( $user_name != $maybe[0] ) {
    942. 

  942. 	    $errors->add('user_name', __("Only lowercase letters and numbers allowed"));
    943. 

  943. 	}
    944. 

  944. 

  945. 	$illegal_names = get_site_option( "illegal_names" );
    946. 

  946. 	if( is_array( $illegal_names ) == false ) {
    947. 

  947. 		$illegal_names = array(  "www", "web", "root", "admin", "main", "invite", "administrator" );
    948. 

  948. 		add_site_option( "illegal_names", $illegal_names );
    949. 

  949. 	}
    950. 

  950. 	if( in_array( $user_name, $illegal_names ) == true ) {
    951. 

  951. 	    $errors->add('user_name',  __("That username is not allowed"));
    952. 

  952. 	}
    953. 

  953. 

  954. 	if( is_email_address_unsafe( $user_email ) )
    955. 

  955. 		$errors->add('user_email',  __("You cannot use that email address to signup. We are having problems with them blocking some of our email. Please use another email provider."));
    956. 

  956. 

  957. 	if( strlen( $user_name ) < 4 ) {
    958. 

  958. 	    $errors->add('user_name',  __("Username must be at least 4 characters"));
    959. 

  959. 	}
    960. 

  960. 

  961. 	if ( strpos( " " . $user_name, "_" ) != false )
    962. 

  962. 		$errors->add('user_name', __("Sorry, usernames may not contain the character '_'!"));
    963. 

  963. 

  964. 	// all numeric?
    965. 

  965. 	$match = array();
    966. 

  966. 	preg_match( '/[0-9]*/', $user_name, $match );
    967. 

  967. 	if ( $match[0] == $user_name )
    968. 

  968. 		$errors->add('user_name', __("Sorry, usernames must have letters too!"));
    969. 

  969. 

  970. 	if ( !is_email( $user_email ) )
    971. 

  971. 	    $errors->add('user_email', __("Please enter a correct email address"));
    972. 

  972. 

  973. 	if ( !validate_email( $user_email ) )
    974. 

  974. 		$errors->add('user_email', __("Please check your email address."));
    975. 

  975. 

  976. 	$limited_email_domains = get_site_option( 'limited_email_domains' );
    977. 

  977. 	if ( is_array( $limited_email_domains ) && empty( $limited_email_domains ) == false ) {
    978. 

  978. 		$emaildomain = substr( $user_email, 1 + strpos( $user_email, '@' ) );
    979. 

  979. 		if( in_array( $emaildomain, $limited_email_domains ) == false ) {
    980. 

  980. 			$errors->add('user_email', __("Sorry, that email address is not allowed!"));
    981. 

  981. 		}
    982. 

  982. 	}
    983. 

  983. 

  984. 	// Check if the username has been used already.
    985. 

  985. 	if ( username_exists($user_name) )
    986. 

  986. 		$errors->add('user_name', __("Sorry, that username already exists!"));
    987. 

  987. 

  988. 	// Check if the email address has been used already.
    989. 

  989. 	if ( email_exists($user_email) )
    990. 

  990. 		$errors->add('user_email', __("Sorry, that email address is already used!"));
    991. 

  991. 

  992. 	// Has someone already signed up for this username?
    993. 

  993. 	$signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_login = %s", $user_name) );
    994. 

  994. 	if ( $signup != null ) {
    995. 

  995. 		$registered_at =  mysql2date('U', $signup->registered);
    996. 

  996. 		$now = current_time( 'timestamp', true );
    997. 

  997. 		$diff = $now - $registered_at;
    998. 

  998. 		// If registered more than two days ago, cancel registration and let this signup go through.
    999. 

  999. 		if ( $diff > 172800 ) {
    1000. 

  1000. 			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->signups WHERE user_login = %s", $user_name) );
    1001. 

  1001. 		} else {
    1002. 

  1002. 			$errors->add('user_name', __("That username is currently reserved but may be available in a couple of days."));
    1003. 

  1003. 		}
    1004. 

  1004. 		if( $signup->active == 0 && $signup->user_email == $user_email )
    1005. 

  1005. 			$errors->add('user_email_used', __("username and email used"));
    1006. 

  1006. 	}
    1007. 

  1007. 

  1008. 	$signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_email = %s", $user_email) );
    1009. 

  1009. 	if ( $signup != null ) {
    1010. 

  1010. 		$diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
    1011. 

  1011. 		// If registered more than two days ago, cancel registration and let this signup go through.
    1012. 

  1012. 		if ( $diff > 172800 ) {
    1013. 

  1013. 			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->signups WHERE user_email = %s", $user_email) );
    1014. 

  1014. 		} else {
    1015. 

  1015. 			$errors->add('user_email', __("That email address has already been used. Please check your inbox for an activation email. It will become available in a couple of days if you do nothing."));
    1016. 

  1016. 		}
    1017. 

  1017. 	}
    1018. 

  1018. 

  1019. 	$result = array('user_name' => $user_name, 'user_email' => $user_email,	'errors' => $errors);
    1020. 

  1020. 

  1021. 	return apply_filters('wpmu_validate_user_signup', $result);
    1022. 

  1022. }
    1023. 

  1023. 

  1024. function wpmu_validate_blog_signup($blogname, $blog_title, $user = '') {
    1025. 

  1025. 	global $wpdb, $domain, $base, $current_site;
    1026. 

  1026. 

  1027. 	$blogname = preg_replace( "/\s+/", '', sanitize_user( $blogname, true ) );
    1028. 

  1028. 	$blog_title = strip_tags( $blog_title );
    1029. 

  1029. 	$blog_title = substr( $blog_title, 0, 50 );
    1030. 

  1030. 

  1031. 	$errors = new WP_Error();
    1032. 

  1032. 	$illegal_names = get_site_option( "illegal_names" );
    1033. 

  1033. 	if( $illegal_names == false ) {
    1034. 

  1034. 	    $illegal_names = array( "www", "web", "root", "admin", "main", "invite", "administrator" );
    1035. 

  1035. 	    add_site_option( "illegal_names", $illegal_names );
    1036. 

  1036. 	}
    1037. 

  1037. 

  1038. 	if ( empty( $blogname ) )
    1039. 

  1039. 	    $errors->add('blogname', __("Please enter a blog name"));
    1040. 

  1040. 

  1041. 	$maybe = array();
    1042. 

  1042. 	preg_match( "/[a-z0-9]+/", $blogname, $maybe );
    1043. 

  1043. 	if( $blogname != $maybe[0] ) {
    1044. 

  1044. 	    $errors->add('blogname', __("Only lowercase letters and numbers allowed"));
    1045. 

  1045. 	}
    1046. 

  1046. 	if( in_array( $blogname, $illegal_names ) == true ) {
    1047. 

  1047. 	    $errors->add('blogname',  __("That name is not allowed"));
    1048. 

  1048. 	}
    1049. 

  1049. 	if( strlen( $blogname ) < 4 && !is_site_admin() ) {
    1050. 

  1050. 	    $errors->add('blogname',  __("Blog name must be at least 4 characters"));
    1051. 

  1051. 	}
    1052. 

  1052. 

  1053. 	if ( strpos( " " . $blogname, "_" ) != false )
    1054. 

  1054. 		$errors->add('blogname', __("Sorry, blog names may not contain the character '_'!"));
    1055. 

  1055. 

  1056. 	// do not allow users to create a blog that conflicts with a page on the main blog.
    1057. 

  1057. 	if ( constant( "VHOST" ) == 'no' && $wpdb->get_var( $wpdb->prepare( "SELECT post_name FROM " . $wpdb->get_blog_prefix( $current_site->blog_id ) . "posts WHERE post_type = 'page' AND post_name = %s", $blogname ) ) ) {
    1058. 

  1058. 		$errors->add( 'blogname', __( "Sorry, you may not use that blog name" ) );
    1059. 

  1059. 	}
    1060. 

  1060. 

  1061. 	// all numeric?
    1062. 

  1062. 	$match = array();
    1063. 

  1063. 	preg_match( '/[0-9]*/', $blogname, $match );
    1064. 

  1064. 	if ( $match[0] == $blogname )
    1065. 

  1065. 		$errors->add('blogname', __("Sorry, blog names must have letters too!"));
    1066. 

  1066. 

  1067. 	$blogname = apply_filters( "newblogname", $blogname );
    1068. 

  1068. 

  1069. 	$blog_title = stripslashes(  $blog_title );
    1070. 

  1070. 

  1071. 	if ( empty( $blog_title ) )
    1072. 

  1072. 	    $errors->add('blog_title', __("Please enter a blog title"));
    1073. 

  1073. 

  1074. 	// Check if the domain/path has been used already.
    1075. 

  1075. 	if( constant( "VHOST" ) == 'yes' ) {
    1076. 

  1076. 		$mydomain = "$blogname.$domain";
    1077. 

  1077. 		$path = $base;
    1078. 

  1078. 	} else {
    1079. 

  1079. 		$mydomain = "$domain";
    1080. 

  1080. 		$path = $base.$blogname.'/';
    1081. 

  1081. 	}
    1082. 

  1082. 	if ( domain_exists($mydomain, $path) )
    1083. 

  1083. 		$errors->add('blogname', __("Sorry, that blog already exists!"));
    1084. 

  1084. 

  1085. 	if ( username_exists( $blogname ) ) {
    1086. 

  1086. 		if ( is_object( $user ) == false || ( is_object($user) && ( $user->user_login != $blogname ) ) )
    1087. 

  1087. 			$errors->add( 'blogname', __( "Sorry, that blog is reserved!" ) );
    1088. 

  1088. 	}
    1089. 

  1089. 

  1090. 	// Has someone already signed up for this domain?
    1091. 

  1091. 	$signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path) ); // TODO: Check email too?
    1092. 

  1092. 	if ( ! empty($signup) ) {
    1093. 

  1093. 		$diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
    1094. 

  1094. 		// If registered more than two days ago, cancel registration and let this signup go through.
    1095. 

  1095. 		if ( $diff > 172800 ) {
    1096. 

  1096. 			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path) );
    1097. 

  1097. 		} else {
    1098. 

  1098. 			$errors->add('blogname', __("That blog is currently reserved but may be available in a couple days."));
    1099. 

  1099. 		}
    1100. 

  1100. 	}
    1101. 

  1101. 

  1102. 	$result = array('domain' => $mydomain, 'path' => $path, 'blogname' => $blogname, 'blog_title' => $blog_title, 'errors' => $errors);
    1103. 

  1103. 	return apply_filters('wpmu_validate_blog_signup', $result);
    1104. 

  1104. }
    1105. 

  1105. 

  1106. // Record signup information for future activation. wpmu_validate_signup() should be run
    1107. 

  1107. // on the inputs before calling wpmu_signup().
    1108. 

  1108. function wpmu_signup_blog($domain, $path, $title, $user, $user_email, $meta = '') {
    1109. 

  1109. 	global $wpdb;
    1110. 

  1110. 

  1111. 	$key = substr( md5( time() . rand() . $domain ), 0, 16 );
    1112. 

  1112. 	$meta = serialize($meta);
    1113. 

  1113. 	$domain = $wpdb->escape($domain);
    1114. 

  1114. 	$path = $wpdb->escape($path);
    1115. 

  1115. 	$title = $wpdb->escape($title);
    1116. 

  1116. 					
    1117. 

  1117. 	$wpdb->insert( $wpdb->signups, array(
    1118. 

  1118. 		'domain' => $domain, 
    1119. 

  1119. 		'path' => $path, 
    1120. 

  1120. 		'title' => $title,
    1121. 

  1121. 		'user_login' => $user, 
    1122. 

  1122. 		'user_email' => $user_email, 
    1123. 

  1123. 		'registered' => current_time('mysql', true),
    1124. 

  1124. 		'activation_key' => $key, 
    1125. 

  1125. 		'meta' => $meta
    1126. 

  1126. 	) );
    1127. 

  1127. 

  1128. 	wpmu_signup_blog_notification($domain, $path, $title, $user, $user_email, $key, $meta);
    1129. 

  1129. }
    1130. 

  1130. 

  1131. function wpmu_signup_user($user, $user_email, $meta = '') {
    1132. 

  1132. 	global $wpdb;
    1133. 

  1133. 

  1134. 	// Format data
    1135. 

  1135. 	$user = preg_replace( "/\s+/", '', sanitize_user( $user, true ) );
    1136. 

  1136. 	$user_email = sanitize_email( $user_email );
    1137. 

  1137. 	$key = substr( md5( time() . rand() . $user_email ), 0, 16 );
    1138. 

  1138. 	$meta = serialize($meta);
    1139. 

  1139. 					
    1140. 

  1140. 	$wpdb->insert( $wpdb->signups, array(
    1141. 

  1141. 		'domain' => '', 
    1142. 

  1142. 		'path' => '', 
    1143. 

  1143. 		'title' => '',
    1144. 

  1144. 		'user_login' => $user, 
    1145. 

  1145. 		'user_email' => $user_email, 
    1146. 

  1146. 		'registered' => current_time('mysql', true),
    1147. 

  1147. 		'activation_key' => $key, 
    1148. 

  1148. 		'meta' => $meta
    1149. 

  1149. 	) );
    1150. 

  1150. 

  1151. 	wpmu_signup_user_notification($user, $user_email, $key, $meta);
    1152. 

  1152. }
    1153. 

  1153. 

  1154. // Notify user of signup success.
    1155. 

  1155. function wpmu_signup_blog_notification($domain, $path, $title, $user, $user_email, $key, $meta = '') {
    1156. 

  1156. 	global $current_site;
    1157. 

  1157. 

  1158. 	if( !apply_filters('wpmu_signup_blog_notification', $domain, $path, $title, $user, $user_email, $key, $meta) )
    1159. 

  1159. 		return false;
    1160. 

  1160. 

  1161. 	// Send email with activation link.
    1162. 

  1162. 	if( constant( "VHOST" ) == 'no' || $current_site->id != 1 ) {
    1163. 

  1163. 		$activate_url = "http://" . $current_site->domain . $current_site->path . "wp-activate.php?key=$key";
    1164. 

  1164. 	} else {
    1165. 

  1165. 		$activate_url = "http://{$domain}{$path}wp-activate.php?key=$key";
    1166. 

  1166. 	}
    1167. 

  1167. 	$activate_url = clean_url($activate_url);
    1168. 

  1168. 	$admin_email = get_site_option( "admin_email" );
    1169. 

  1169. 	if( $admin_email == '' )
    1170. 

  1170. 		$admin_email = 'support@' . $_SERVER['SERVER_NAME'];
    1171. 

  1171. 	$from_name = get_site_option( "site_name" ) == '' ? 'WordPress' : wp_specialchars( get_site_option( "site_name" ) );
    1172. 

  1172. 	$message_headers = "MIME-Version: 1.0\n" . "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
    1173. 

  1173. 	$message = sprintf( apply_filters( 'wpmu_signup_blog_notification_email', __( "To activate your blog, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login.\n\nAfter you activate, you can visit your blog here:\n\n%s" ) ), $activate_url, clean_url( "http://{$domain}{$path}" ), $key );
    1174. 

  1174. 	// TODO: Don't hard code activation link.
    1175. 

  1175. 	$subject = sprintf( apply_filters( 'wpmu_signup_blog_notification_subject', __( '[%1s] Activate %2s' ) ), $from_name, clean_url( 'http://' . $domain . $path ) );
    1176. 

  1176. 	wp_mail($user_email, $subject, $message, $message_headers);
    1177. 

  1177. 	return true;
    1178. 

  1178. }
    1179. 

  1179. 

  1180. function wpmu_signup_user_notification($user, $user_email, $key, $meta = '') {
    1181. 

  1181. 	global $current_site;
    1182. 

  1182. 

  1183. 	if( !apply_filters('wpmu_signup_user_notification', $user, $user_email, $key, $meta) )
    1184. 

  1184. 		return false;
    1185. 

  1185. 

  1186. 	// Send email with activation link.
    1187. 

  1187. 	$admin_email = get_site_option( "admin_email" );
    1188. 

  1188. 	if( $admin_email == '' )
    1189. 

  1189. 		$admin_email = 'support@' . $_SERVER['SERVER_NAME'];
    1190. 

  1190. 	$from_name = get_site_option( "site_name" ) == '' ? 'WordPress' : wp_specialchars( get_site_option( "site_name" ) );
    1191. 

  1191. 	$message_headers = "MIME-Version: 1.0\n" . "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
    1192. 

  1192. 	$message = sprintf( apply_filters( 'wpmu_signup_user_notification_email', __( "To activate your user, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login.\n\n" ) ), site_url( "wp-activate.php?key=$key" ), $key );
    1193. 

  1193. 	// TODO: Don't hard code activation link.
    1194. 

  1194. 	$subject = sprintf( __( apply_filters( 'wpmu_signup_user_notification_subject', '[%1s] Activate %2s' ) ), $from_name, $user);
    1195. 

  1195. 	wp_mail($user_email, $subject, $message, $message_headers);
    1196. 

  1196. 	return true;
    1197. 

  1197. }
    1198. 

  1198. 

  1199. function wpmu_activate_signup($key) {
    1200. 

  1200. 	global $wpdb, $current_site;
    1201. 

  1201. 

  1202. 	$signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE activation_key = %s", $key) );
    1203. 

  1203. 

  1204. 	if ( empty($signup) )
    1205. 

  1205. 		return new WP_Error('invalid_key', __('Invalid activation key.'));
    1206. 

  1206. 

  1207. 	if ( $signup->active )
    1208. 

  1208. 		return new WP_Error('already_active', __('The blog is already active.'), $signup);
    1209. 

  1209. 

  1210. 	$meta = unserialize($signup->meta);
    1211. 

  1211. 	$user_login = $wpdb->escape($signup->user_login);
    1212. 

  1212. 	$user_email = $wpdb->escape($signup->user_email);
    1213. 

  1213. 	wpmu_validate_user_signup($user_login, $user_email);
    1214. 

  1214. 	$password = generate_random_password();
    1215. 

  1215. 

  1216. 	$user_id = username_exists($user_login);
    1217. 

  1217. 

  1218. 	if ( ! $user_id )
    1219. 

  1219. 		$user_id = wpmu_create_user($user_login, $password, $user_email);
    1220. 

  1220. 	else
    1221. 

  1221. 		$user_already_exists = true;
    1222. 

  1222. 

  1223. 	if ( ! $user_id )
    1224. 

  1224. 		return new WP_Error('create_user', __('Could not create user'), $signup);
    1225. 

  1225. 

  1226. 	$now = current_time('mysql', true);
    1227. 

  1227. 

  1228. 	if ( empty($signup->domain) ) {
    1229. 

  1229. 		$wpdb->update( $wpdb->signups, array('active' => 1, 'activated' => $now), array('activation_key' => $key) );
    1230. 

  1230. 		if ( isset( $user_already_exists ) )
    1231. 

  1231. 			return new WP_Error( 'user_already_exists', __( 'That username is already activated.' ), $signup);
    1232. 

  1232. 		wpmu_welcome_user_notification($user_id, $password, $meta);
    1233. 

  1233. 		$user_site = get_site_option( 'dashboard_blog', $current_site->blog_id );
    1234. 

  1234. 		if ( $user_site == false ) {
    1235. 

  1235. 			add_user_to_blog( '1', $user_id, get_site_option( 'default_user_role', 'subscriber' ) );
    1236. 

  1236. 		} else {
    1237. 

  1237. 			add_user_to_blog( $user_site, $user_id, get_site_option( 'default_user_role', 'subscriber' ) );
    1238. 

  1238. 		}
    1239. 

  1239. 		add_new_user_to_blog( $user_id, $user_email, $meta );
    1240. 

  1240. 		do_action('wpmu_activate_user', $user_id, $password, $meta);
    1241. 

  1241. 		return array('user_id' => $user_id, 'password' => $password, 'meta' => $meta);
    1242. 

  1242. 	}
    1243. 

  1243. 

  1244. 	wpmu_validate_blog_signup($signup->domain, $signup->title);
    1245. 

  1245. 	$blog_id = wpmu_create_blog( $signup->domain, $signup->path, $signup->title, $user_id, $meta, $wpdb->siteid );
    1246. 

  1246. 

  1247. 	// TODO: What to do if we create a user but cannot create a blog?
    1248. 

  1248. 	if ( is_wp_error($blog_id) ) {
    1249. 

  1249. 		// If blog is taken, that means a previous attempt to activate this blog failed in between creating the blog and
    1250. 

  1250. 		// setting the activation flag.  Let's just set the active flag and instruct the user to reset their password.
    1251. 

  1251. 		if ( 'blog_taken' == $blog_id->get_error_code() ) {
    1252. 

  1252. 			$blog_id->add_data( $signup );
    1253. 

  1253. 			$wpdb->update( $wpdb->signups, array( 'active' => 1, 'activated' => $now ), array( 'activation_key' => $key ) );
    1254. 

  1254. 		}
    1255. 

  1255. 

  1256. 		return $blog_id;
    1257. 

  1257. 	}
    1258. 

  1258. 

  1259. 	$wpdb->update( $wpdb->signups, array('active' => 1, 'activated' => $now), array('activation_key' => $key) );
    1260. 

  1260. 

  1261. 	wpmu_welcome_notification($blog_id, $user_id, $password, $signup->title, $meta);
    1262. 

  1262. 

  1263. 	do_action('wpmu_activate_blog', $blog_id, $user_id, $password, $signup->title, $meta);
    1264. 

  1264. 

  1265. 	return array('blog_id' => $blog_id, 'user_id' => $user_id, 'password' => $password, 'title' => $signup->title, 'meta' => $meta);
    1266. 

  1266. }
    1267. 

  1267. 

  1268. function generate_random_password( $len = 8 ) {
    1269. 

  1269. 	$random_password = substr(md5(uniqid(microtime())), 0, intval( $len ) );
    1270. 

  1270. 	$random_password = apply_filters('random_password', $random_password);
    1271. 

  1271. 	return $random_password;
    1272. 

  1272. }
    1273. 

  1273. 

  1274. function wpmu_create_user( $user_name, $password, $email) {
    1275. 

  1275. 	$user_name = preg_replace( "/\s+/", '', sanitize_user( $user_name, true ) );
    1276. 

  1276. 	if ( username_exists($user_name) )
    1277. 

  1277. 		return false;
    1278. 

  1278. 

  1279. 	// Check if the email address has been used already.
    1280. 

  1280. 	if ( email_exists($email) )
    1281. 

  1281. 		return false;
    1282. 

  1282. 

  1283. 	$user_id = wp_create_user( $user_name, $password, $email );
    1284. 

  1284. 	$user = new WP_User($user_id);
    1285. 

  1285. 

  1286. 	// Newly created users have no roles or caps until they are added to a blog.
    1287. 

  1287. 	update_user_option($user_id, 'capabilities', '');
    1288. 

  1288. 	update_user_option($user_id, 'user_level', '');
    1289. 

  1289. 

  1290. 	do_action( 'wpmu_new_user', $user_id );
    1291. 

  1291. 

  1292. 	return $user_id;
    1293. 

  1293. }
    1294. 

  1294. 

  1295. function wpmu_create_blog($domain, $path, $title, $user_id, $meta = '', $site_id = 1) {
    1296. 

  1296. 	$domain = preg_replace( "/\s+/", '', sanitize_user( $domain, true ) );
    1297. 

  1297. 	if( constant( 'VHOST' ) == 'yes' )
    1298. 

  1298. 		$domain = str_replace( '@', '', $domain );
    1299. 

  1299. 	$title = strip_tags( $title );
    1300. 

  1300. 	$user_id = (int) $user_id;
    1301. 

  1301. 

  1302. 	if( empty($path) )
    1303. 

  1303. 		$path = '/';
    1304. 

  1304. 

  1305. 	// Check if the domain has been used already. We should return an error message.
    1306. 

  1306. 	if ( domain_exists($domain, $path, $site_id) )
    1307. 

  1307. 		return new WP_Error('blog_taken', __('Blog already exists.'));
    1308. 

  1308. 

  1309. 	if ( !defined("WP_INSTALLING") )
    1310. 

  1310. 		define( "WP_INSTALLING", true );
    1311. 

  1311. 

  1312. 	if ( ! $blog_id = insert_blog($domain, $path, $site_id) )
    1313. 

  1313. 		return new WP_Error('insert_blog', __('Could not create blog.'));
    1314. 

  1314. 

  1315. 	switch_to_blog($blog_id);
    1316. 

  1316. 

  1317. 	install_blog($blog_id, $title);
    1318. 

  1318. 

  1319. 	install_blog_defaults($blog_id, $user_id);
    1320. 

  1320. 

  1321. 	add_user_to_blog($blog_id, $user_id, 'administrator');
    1322. 

  1322. 

  1323. 	if ( is_array($meta) ) foreach ($meta as $key => $value) {
    1324. 

  1324. 		if( $key == 'public' || $key == 'archived' || $key == 'mature' || $key == 'spam' || $key == 'deleted' || $key == 'lang_id' ) {
    1325. 

  1325. 			update_blog_status( $blog_id, $key, $value );
    1326. 

  1326. 		} else {
    1327. 

  1327. 			update_option( $key, $value );
    1328. 

  1328. 		}
    1329. 

  1329. 	}
    1330. 

  1330. 

  1331. 	add_option( 'WPLANG', get_site_option( 'WPLANG' ) );
    1332. 

  1332. 

  1333. 	update_option( 'blog_public', $meta['public'] );
    1334. 

  1334. 

  1335. 	if ( !is_site_admin() && get_usermeta( $user_id, 'primary_blog' ) == get_site_option( 'dashboard_blog', 1 ) )
    1336. 

  1336. 		update_usermeta( $user_id, 'primary_blog', $blog_id );
    1337. 

  1337. 

  1338. 	restore_current_blog();
    1339. 

  1339. 

  1340. 	do_action( 'wpmu_new_blog', $blog_id, $user_id );
    1341. 

  1341. 

  1342. 	return $blog_id;
    1343. 

  1343. }
    1344. 

  1344. 

  1345. function newblog_notify_siteadmin( $blog_id, $deprecated = '' ) {
    1346. 

  1346. 	global $current_site;
    1347. 

  1347. 	if( get_site_option( 'registrationnotification' ) != 'yes' )
    1348. 

  1348. 		return false;
    1349. 

  1349. 		
    1350. 

  1350. 	$email = get_site_option( 'admin_email' );
    1351. 

  1351. 	if( is_email($email) == false )
    1352. 

  1352. 		return false;
    1353. 

  1353. 	
    1354. 

  1354. 	$options_site_url = clean_url("http://{$current_site->domain}{$current_site->path}wp-admin/wpmu-options.php");
    1355. 

  1355. 

  1356. 	switch_to_blog( $blog_id );
    1357. 

  1357. 	$blogname = get_option( 'blogname' );
    1358. 

  1358. 	$siteurl = get_option( 'siteurl' );
    1359. 

  1359. 	restore_current_blog();
    1360. 

  1360. 	
    1361. 

  1361. 	$msg = sprintf( __( "New Blog: %1s
    1362. 

  1362. URL: %2s
    1363. 

  1363. Remote IP: %3s
    1364. 

  1364. 

  1365. Disable these notifications: %4s"), $blogname, $siteurl, $_SERVER['REMOTE_ADDR'], $options_site_url);
    1366. 

  1366. 	$msg = apply_filters( 'newblog_notify_siteadmin', $msg );
    1367. 

  1367. 	
    1368. 

  1368. 	wp_mail( $email, sprintf( __( "New Blog Registration: %s" ), $siteurl ), $msg );
    1369. 

  1369. 	return true;
    1370. 

  1370. }
    1371. 

  1371. 

  1372. function newuser_notify_siteadmin( $user_id ) {
    1373. 

  1373. 	global $current_site;
    1374. 

  1374. 	if( get_site_option( 'registrationnotification' ) != 'yes' )
    1375. 

  1375. 		return false;
    1376. 

  1376. 		
    1377. 

  1377. 	$email = get_site_option( 'admin_email' );
    1378. 

  1378. 	if( is_email($email) == false )
    1379. 

  1379. 		return false;
    1380. 

  1380. 	$user = new WP_User($user_id);
    1381. 

  1381. 

  1382. 	$options_site_url = clean_url("http://{$current_site->domain}{$current_site->path}wp-admin/wpmu-options.php");
    1383. 

  1383. 	$msg = sprintf(__("New User: %1s
    1384. 

  1384. Remote IP: %2s
    1385. 

  1385. 

  1386. Disable these notifications: %3s"), $user->user_login, $_SERVER['REMOTE_ADDR'], $options_site_url);
    1387. 

  1387. 	
    1388. 

  1388. 	$msg = apply_filters( 'newuser_notify_siteadmin', $msg );
    1389. 

  1389. 	wp_mail( $email, sprintf(__("New User Registration: %s"), $user->user_login), $msg );
    1390. 

  1390. 	return true;
    1391. 

  1391. }
    1392. 

  1392. 

  1393. function domain_exists($domain, $path, $site_id = 1) {
    1394. 

  1394. 	global $wpdb;
    1395. 

  1395. 	return $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s AND site_id = %d", $domain, $path, $site_id) );
    1396. 

  1396. }
    1397. 

  1397. 

  1398. function insert_blog($domain, $path, $site_id) {
    1399. 

  1399. 	global $wpdb;
    1400. 

  1400. 

  1401. 	$path = trailingslashit($path);
    1402. 

  1402. 	$site_id = (int) $site_id;
    1403. 

  1403. 

  1404. 	$result = $wpdb->insert( $wpdb->blogs, array('site_id' => $site_id, 'domain' => $domain, 'path' => $path, 'registered' => current_time('mysql')) );
    1405. 

  1405. 	if ( ! $result )
    1406. 

  1406. 		return false;
    1407. 

  1407. 

  1408. 	refresh_blog_details($wpdb->insert_id);
    1409. 

  1409. 	return $wpdb->insert_id;
    1410. 

  1410. }
    1411. 

  1411. 

  1412. // Install an empty blog.  wpdb should already be switched.
    1413. 

  1413. function install_blog($blog_id, $blog_title = '') {
    1414. 

  1414. 	global $wpdb, $table_prefix, $wp_roles;
    1415. 

  1415. 	$wpdb->suppress_errors();
    1416. 

  1416. 

  1417. 	// Cast for security
    1418. 

  1418. 	$blog_id = (int) $blog_id;
    1419. 

  1419. 

  1420. 	require_once( ABSPATH . 'wp-admin/includes/upgrade.php');
    1421. 

  1421. 

  1422. 	if ( $wpdb->get_results("SELECT ID FROM $wpdb->posts") ) 
    1423. 

  1423. 		die(__('<h1>Already Installed</h1><p>You appear to have already installed WordPress. To reinstall please clear your old database tables first.</p>') . '</body></html>');
    1424. 

  1424. 	$wpdb->suppress_errors( false);
    1425. 

  1425. 

  1426. 	$url = get_blogaddress_by_id($blog_id);
    1427. 

  1427. 

  1428. 	// Set everything up
    1429. 

  1429. 	make_db_current_silent();
    1430. 

  1430. 	populate_options();
    1431. 

  1431. 	populate_roles();
    1432. 

  1432. 	$wp_roles->_init();
    1433. 

  1433. 

  1434. 	// fix url.
    1435. 

  1435. 	update_option('siteurl', $url);
    1436. 

  1436. 	update_option('home', $url);
    1437. 

  1437. 	update_option('fileupload_url', $url . "files" );
    1438. 

  1438. 	update_option('upload_path', "wp-content/blogs.dir/" . $blog_id . "/files");
    1439. 

  1439. 	update_option('blogname', stripslashes( $blog_title ) );
    1440. 

  1440. 	update_option('admin_email', '');
    1441. 

  1441. 	$wpdb->update( $wpdb->options, array('option_value' => ''), array('option_name' => 'admin_email') );
    1442. 

  1442. 

  1443. 	// Default category
    1444. 

  1444. 	$wpdb->insert( $wpdb->terms, array('term_id' => 1, 'name' => __('Uncategorized'), 'slug' => sanitize_title(__('Uncategorized')), 'term_group' => 0) );
    1445. 

  1445. 	$wpdb->insert( $wpdb->term_taxonomy, array('term_id' => 1, 'taxonomy' => 'category', 'description' => '', 'parent' => 0, 'count' => 1) );
    1446. 

  1446. 

  1447. 	// Default link category
    1448. 

  1448. 	$cat_name = __('Blogroll');
    1449. 

  1449. 	$cat_slug = sanitize_title($cat_name);
    1450. 

  1450. 	
    1451. 

  1451. 	$blogroll_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM {$wpdb->sitecategories} WHERE category_nicename = %s", $cat_slug ) );
    1452. 

  1452. 	if( $blogroll_id == null ) {
    1453. 

  1453. 		$wpdb->insert( $wpdb->sitecategories, array('cat_ID' => 0, 'cat_name' => $cat_name, 'category_nicename' => $cat_slug, 'last_updated' => current_time('mysql', true)) );
    1454. 

  1454. 		$blogroll_id = $wpdb->insert_id;
    1455. 

  1455. 	}
    1456. 

  1456. 	$wpdb->insert( $wpdb->terms, array('term_id' => $blogroll_id, 'name' => $cat_name, 'slug' => $cat_slug, 'term_group' => 0) );
    1457. 

  1457. 	$wpdb->insert( $wpdb->term_taxonomy, array('term_id' => $blogroll_id, 'taxonomy' => 'link_category', 'description' => '', 'parent' => 0, 'count' => 2) );
    1458. 

  1458. 	update_option('default_link_category', $blogroll_id);
    1459. 

  1459. 

  1460. 	// remove all perms
    1461. 

  1461. 	$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE meta_key = %s", $tab…
    1462.

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