block connection/friend request spam

boot.php

@@ -2,7 +2,7 @@
 
 set_time_limit(0);
 
-define ( 'BUILD_ID',               1025   );
+define ( 'BUILD_ID',               1026   );
 define ( 'DFRN_PROTOCOL_VERSION',  '2.0'  );
 
 define ( 'EOL',                    "<br />\r\n"     );

database.sql

@@ -372,6 +372,7 @@ CREATE TABLE IF NOT EXISTS `user` (
   `notify-flags` int(11) unsigned NOT NULL DEFAULT '65535', 
   `page-flags` int(11) unsigned NOT NULL DEFAULT '0',
   `pwdreset` char(255) NOT NULL,
+  `maxreq` int(11) NOT NULL DEFAULT '10',
   `allow_cid` mediumtext NOT NULL, 
   `allow_gid` mediumtext NOT NULL,
   `deny_cid` mediumtext NOT NULL, 

mod/dfrn_request.php

@@ -220,7 +220,7 @@ function dfrn_request_post(&$a) {
 	$nickname       = $a->profile['nickname'];
 	$notify_flags   = $a->profile['notify-flags'];
 	$uid            = $a->profile['uid'];
-
+	$maxreq         = intval($a->profile['maxreq']);
 	$contact_record = null;
 	$failed         = false;
 	$parms          = null;
@@ -228,6 +228,23 @@ function dfrn_request_post(&$a) {
 
 	if( x($_POST,'dfrn_url')) {
 
+		/**
+		 * Block friend request spam
+		 */
+
+		if($maxreq) {
+			$r = q("SELECT * FROM `intro` WHERE `datetime` > '%s' AND `uid` = %d",
+				dbesc(datetime_convert('UTC','UTC','now - 24 hours')),
+				intval($uid)
+			);
+			if(count($r) > $maxreq) {
+				notice( $a->profile['name'] . t(' has received too many connection requests today.') . EOL);
+				notice( t('Spam protection measures have been invoked.') . EOL);
+				notice( t('Friends are advised to please try again in 24 hours.') . EOL);
+				return;
+			} 
+		}
+
 		$url = trim($_POST['dfrn_url']);
 		if(! strlen($url)) {
 			notice( t("Invalid locator") . EOL );

mod/settings.php

@@ -53,6 +53,7 @@ function settings_post(&$a) {
 	$timezone         = ((x($_POST,'timezone'))   ? notags(trim($_POST['timezone']))     : '');
 	$defloc           = ((x($_POST,'defloc'))     ? notags(trim($_POST['defloc']))       : '');
 	$openid           = ((x($_POST,'openid_url')) ? notags(trim($_POST['openid_url']))   : '');
+	$maxreq           = ((x($_POST,'maxreq'))     ? intval($_POST['maxreq'])             : 0);
 
 	$allow_location   = (((x($_POST,'allow_location')) && (intval($_POST['allow_location']) == 1)) ? 1: 0);
 	$publish          = (((x($_POST,'profile_in_directory')) && (intval($_POST['profile_in_directory']) == 1)) ? 1: 0);
@@ -105,7 +106,7 @@ function settings_post(&$a) {
 	$str_group_deny    = perms2str($_POST['group_deny']);
 	$str_contact_deny  = perms2str($_POST['contact_deny']);
 
-	$r = q("UPDATE `user` SET `username` = '%s', `email` = '%s', `openid` = '%s', `timezone` = '%s',  `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s', `notify-flags` = %d, `page-flags` = %d, `default-location` = '%s', `allow_location` = %d, `theme` = '%s'  WHERE `uid` = %d LIMIT 1",
+	$r = q("UPDATE `user` SET `username` = '%s', `email` = '%s', `openid` = '%s', `timezone` = '%s',  `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s', `notify-flags` = %d, `page-flags` = %d, `default-location` = '%s', `allow_location` = %d, `theme` = '%s', `maxreq` = %d  WHERE `uid` = %d LIMIT 1",
 			dbesc($username),
 			dbesc($email),
 			dbesc($openid),
@@ -119,6 +120,7 @@ function settings_post(&$a) {
 			dbesc($defloc),
 			intval($allow_location),
 			dbesc($theme),
+			intval($maxreq),
 			intval(local_user())
 	);
 	if($r)
@@ -179,6 +181,7 @@ function settings_content(&$a) {
 	$notify   = $a->user['notify-flags'];
 	$defloc   = $a->user['default-location'];
 	$openid   = $a->user['openid'];
+	$maxreq   = $a->user['maxreq'];
 
 	if(! strlen($a->user['timezone']))
 		$timezone = date_default_timezone_get();
@@ -290,6 +293,7 @@ function settings_content(&$a) {
 		'$sel_notify3' => (($notify & NOTIFY_WALL)    ? ' checked="checked" ' : ''),
 		'$sel_notify4' => (($notify & NOTIFY_COMMENT) ? ' checked="checked" ' : ''),
 		'$sel_notify5' => (($notify & NOTIFY_MAIL)    ? ' checked="checked" ' : ''),
+		'$maxreq' => $maxreq,
 		'$theme' => $theme_selector,
 		'$pagetype' => $pagetype
 	));

update.php

@@ -247,3 +247,7 @@ function update_1024() {
 	q("ALTER TABLE `profile` ADD `keywords` TEXT NOT NULL AFTER `religion` ");
 }
 
+function update_1025() {
+	q("ALTER TABLE `user` ADD `maxreq` int(11) NOT NULL DEFAULT '10' AFTER `pwdreset` ");
+}
+

view/en/settings.tpl

@@ -59,10 +59,22 @@ $theme
 
 <input type="hidden" name="visibility" value="$visibility" />
 
+<div id="settings-maxreq-wrapper">
+<label id="settings-maxreq-label" for="settings-maxreq" >Maximum Friend Requests/Day</label>
+<input id="settings-maxreq" name="maxreq" value="$maxreq" />
+<div id="settings-maxreq-desc">(to prevent spam abuse)</div>
+</div>
+<div id="settings-maxreq-end"></div>
+
+
+
+
 $profile_in_dir
 
 $profile_in_net_dir
 
+
+
 <div id="settings-default-perms" class="settings-default-perms" >
 	<div id="settings-default-perms-menu" class="fakelink" onClick="openClose('settings-default-perms-select');" >$permissions</div>
 	<div id="settings-default-perms-menu-end"></div>

view/theme/default/style.css

@@ -496,6 +496,7 @@ input#dfrn-url {
 #settings-password-end,
 #settings-confirm-end,
 #settings-openid-end,
+#settings-maxreq-end,
 #notify1-end,
 #notify2-end,
 #notify3-end,
@@ -515,6 +516,7 @@ input#dfrn-url {
 #settings-password-label,
 #settings-confirm-label,
 #settings-openid-label,
+#settings-maxreq-label,
 #settings-label-notify1,
 #settings-label-notify2,
 #settings-label-notify3,
@@ -533,6 +535,7 @@ input#dfrn-url {
 #theme-select,
 #settings-password,
 #settings-confirm,
+#settings-maxreq,
 #notify1,
 #notify2,
 #notify3,
@@ -548,7 +551,10 @@ input#dfrn-url {
 	width: 127px;
 }
 	
-
+#settings-maxreq-desc {
+	float: left;
+	margin-left: 20px;
+}
 
 #settings-theme-label,
 #settings-defloc-label {