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<title>[BuddyPress][4084] trunk/bp-members: Properly sanitize sign-up fields to prevent possible XSS on new user registration.</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd>4084</dd>
<dt>Author</dt> <dd>johnjamesjacoby</dd>
<dt>Date</dt> <dd>2011-03-08 01:10:53 +0000 (Tue, 08 Mar 2011)</dd>
</dl>
<h3>Log Message</h3>
<pre>Properly sanitize sign-up fields to prevent possible XSS on new user registration. (1.3 trunk)</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkbpmembersbpmembersfiltersphp">trunk/bp-members/bp-members-filters.php</a></li>
<li><a href="#trunkbpmembersbpmembersloaderphp">trunk/bp-members/bp-members-loader.php</a></li>
<li><a href="#trunkbpmembersbpmemberstemplatephp">trunk/bp-members/bp-members-template.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkbpmembersbpmembersfiltersphp"></a>
<div class="modfile"><h4>Modified: trunk/bp-members/bp-members-filters.php (4083 => 4084)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/bp-members/bp-members-filters.php 2011-03-08 00:55:09 UTC (rev 4083)
+++ trunk/bp-members/bp-members-filters.php 2011-03-08 01:10:53 UTC (rev 4084)
</span><span class="lines">@@ -1,3 +1,46 @@
</span><span class="cx"> <?php
</span><span class="cx">
</span><ins>+/**
+ * BuddyPress Members Filters
+ *
+ * Member specific filters
+ *
+ * @package BuddyPress
+ * @subpackage Member Core
+ */
+
+/**
+ * Load additional sign-up sanitization filters on bp_loaded. These are used
+ * to prevent XSS in the BuddyPress sign-up process. You can unhook these to
+ * allow for customization of your registration fields, however it is highly
+ * recommended that you leave these in place for the safety of your network.
+ *
+ * @since BuddyPress (r4079)
+ * @uses add_filter()
+ */
+function bp_members_signup_sanitization() {
+
+ // Filters on sign-up fields
+ $fields = array (
+ 'bp_get_signup_username_value',
+ 'bp_get_signup_email_value',
+ 'bp_get_signup_with_blog_value',
+ 'bp_get_signup_blog_url_value',
+ 'bp_get_signup_blog_title_value',
+ 'bp_get_signup_blog_privacy_value',
+ 'bp_get_signup_avatar_dir_value',
+ );
+
+ // Add the 'strip_tags' filter to each field
+ foreach( $fields as $filter ) {
+ add_filter( $filter, 'esc_html', 1 );
+ add_filter( $filter, 'wp_filter_kses', 2 );
+ add_filter( $filter, 'stripslashes', 3 );
+ }
+
+ // Sanitize email
+ add_filter( 'bp_get_signup_email_value', 'sanitize_email' );
+}
+add_action( 'bp_loaded', 'bp_members_signup_sanitization' );
+
</ins><span class="cx"> ?>
</span></span></pre></div>
<a id="trunkbpmembersbpmembersloaderphp"></a>
<div class="modfile"><h4>Modified: trunk/bp-members/bp-members-loader.php (4083 => 4084)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/bp-members/bp-members-loader.php 2011-03-08 00:55:09 UTC (rev 4083)
+++ trunk/bp-members/bp-members-loader.php 2011-03-08 01:10:53 UTC (rev 4084)
</span><span class="lines">@@ -6,7 +6,7 @@
</span><span class="cx"> * A members component to help contain all of the user specific slugs
</span><span class="cx"> *
</span><span class="cx"> * @package BuddyPress
</span><del>- * @subpackage User Core
</del><ins>+ * @subpackage Member Core
</ins><span class="cx"> */
</span><span class="cx">
</span><span class="cx"> class BP_Members_Component extends BP_Component {
</span></span></pre></div>
<a id="trunkbpmembersbpmemberstemplatephp"></a>
<div class="modfile"><h4>Modified: trunk/bp-members/bp-members-template.php (4083 => 4084)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/bp-members/bp-members-template.php 2011-03-08 00:55:09 UTC (rev 4083)
+++ trunk/bp-members/bp-members-template.php 2011-03-08 01:10:53 UTC (rev 4084)
</span><span class="lines">@@ -901,6 +901,18 @@
</span><span class="cx"> function bp_get_signup_avatar_dir_value() {
</span><span class="cx"> global $bp;
</span><span class="cx">
</span><ins>+ // Check if signup_avatar_dir is passed
+ if ( !empty( $_POST['signup_avatar_dir'] ) )
+ $signup_avatar_dir = $_POST['signup_avatar_dir'];
+
+ // If not, check if global is set
+ elseif ( !empty( $bp->signup->avatar_dir ) )
+ $signup_avatar_dir = $bp->signup->avatar_dir;
+
+ // If not, set false
+ else
+ $signup_avatar_dir = false;
+
</ins><span class="cx"> return apply_filters( 'bp_get_signup_avatar_dir_value', $bp->signup->avatar_dir );
</span><span class="cx"> }
</span><span class="cx">
</span><span class="lines">@@ -928,28 +940,37 @@
</span><span class="cx"> $r = wp_parse_args( $args, $defaults );
</span><span class="cx"> extract( $r, EXTR_SKIP );
</span><span class="cx">
</span><del>- if ( !empty( $_POST['signup_avatar_dir'] ) ) {
- $signup_avatar_dir = $_POST['signup_avatar_dir'];
- } else if ( !empty( $bp->signup->avatar_dir ) ) {
- $signup_avatar_dir = $bp->signup->avatar_dir;
- }
</del><ins>+ // Avatar DIR is found
+ if ( $signup_avatar_dir = bp_get_signup_avatar_dir_value() ) {
+ $gravatar_img = bp_core_fetch_avatar( array(
+ 'item_id' => $signup_avatar_dir,
+ 'object' => 'signup',
+ 'avatar_dir' => 'avatars/signups',
+ 'type' => 'full',
+ 'width' => $size,
+ 'height' => $size,
+ 'alt' => $alt,
+ 'class' => $class
+ ) );
</ins><span class="cx">
</span><del>- if ( empty( $signup_avatar_dir ) ) {
- if ( empty( $bp->grav_default->user ) ) {
</del><ins>+ // No avatar DIR was found
+ } else {
+
+ // Set default gravatar type
+ if ( empty( $bp->grav_default->user ) )
</ins><span class="cx"> $default_grav = 'wavatar';
</span><del>- } else if ( 'mystery' == $bp->grav_default->user ) {
- $default_grav = apply_filters( 'bp_core_mysteryman_src', BP_PLUGIN_URL . '/bp-core/images/mystery-man.jpg' );
- } else {
</del><ins>+ else if ( 'mystery' == $bp->grav_default->user )
+ $default_grav = BP_PLUGIN_URL . '/bp-core/images/mystery-man.jpg';
+ else
</ins><span class="cx"> $default_grav = $bp->grav_default->user;
</span><del>- }
</del><span class="cx">
</span><del>- $gravatar_url = apply_filters( 'bp_gravatar_url', 'http://www.gravatar.com/avatar/' );
- $gravatar_img = '<img src="' . $gravatar_url . md5( strtolower( $_POST['signup_email'] ) ) . '?d=' . $default_grav . '&amp;s=' . $size . '" width="' . $size . '" height="' . $size . '" alt="' . $alt . '" class="' . $class . '" />';
- } else {
- $gravatar_img = bp_core_fetch_avatar( array( 'item_id' => $signup_avatar_dir, 'object' => 'signup', 'avatar_dir' => 'avatars/signups', 'type' => 'full', 'width' => $size, 'height' => $size, 'alt' => $alt, 'class' => $class ) );
</del><ins>+ // Create
+ $gravatar_url = apply_filters( 'bp_gravatar_url', 'http://www.gravatar.com/avatar/' );
+ $md5_lcase_email = md5( strtolower( bp_get_signup_email_value() ) );
+ $gravatar_img = '<img src="' . $gravatar_url . $md5_lcase_email . '?d=' . $default_grav . '&amp;s=' . $size . '" width="' . $size . '" height="' . $size . '" alt="' . $alt . '" class="' . $class . '" />';
</ins><span class="cx"> }
</span><span class="cx">
</span><del>- return apply_filters( 'bp_get_signup_avatar', $gravatar_img );
</del><ins>+ return apply_filters( 'bp_get_signup_avatar', $gravatar_img, $args );
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> function bp_signup_allowed() {
</span></span></pre>
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