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<title>[23420] trunk/wp-includes/post.php: Properly truncate UTF-8 post slugs in wp_unique_post_slug().</title>
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<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/23420">23420</a></dd>
<dt>Author</dt> <dd>SergeyBiryukov</dd>
<dt>Date</dt> <dd>2013-02-15 14:35:41 +0000 (Fri, 15 Feb 2013)</dd>
</dl>
<h3>Log Message</h3>
<pre>Properly truncate UTF-8 post slugs in wp_unique_post_slug(). fixes <a href="http://core.trac.wordpress.org/ticket/21013">#21013</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludespostphp">trunk/wp-includes/post.php</a></li>
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<h3>Diff</h3>
<a id="trunkwpincludespostphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/post.php (23419 => 23420)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/post.php 2013-02-15 02:01:36 UTC (rev 23419)
+++ trunk/wp-includes/post.php 2013-02-15 14:35:41 UTC (rev 23420)
</span><span class="lines">@@ -3150,8 +3150,8 @@
</span><span class="cx"> if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug ) ) {
</span><span class="cx"> $suffix = 2;
</span><span class="cx"> do {
</span><del>- $alt_post_name = substr ($slug, 0, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
- $post_name_check = $wpdb->get_var( $wpdb->prepare($check_sql, $alt_post_name, $post_ID ) );
</del><ins>+ $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID ) );
</ins><span class="cx"> $suffix++;
</span><span class="cx"> } while ( $post_name_check );
</span><span class="cx"> $slug = $alt_post_name;
</span><span class="lines">@@ -3167,7 +3167,7 @@
</span><span class="cx"> if ( $post_name_check || in_array( $slug, $feeds ) || preg_match( "@^($wp_rewrite->pagination_base)?\d+$@", $slug ) || apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', false, $slug, $post_type, $post_parent ) ) {
</span><span class="cx"> $suffix = 2;
</span><span class="cx"> do {
</span><del>- $alt_post_name = substr( $slug, 0, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
</del><ins>+ $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
</ins><span class="cx"> $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID, $post_parent ) );
</span><span class="cx"> $suffix++;
</span><span class="cx"> } while ( $post_name_check );
</span><span class="lines">@@ -3181,7 +3181,7 @@
</span><span class="cx"> if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ) ) {
</span><span class="cx"> $suffix = 2;
</span><span class="cx"> do {
</span><del>- $alt_post_name = substr( $slug, 0, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
</del><ins>+ $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
</ins><span class="cx"> $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) );
</span><span class="cx"> $suffix++;
</span><span class="cx"> } while ( $post_name_check );
</span><span class="lines">@@ -3193,6 +3193,29 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> /**
</span><ins>+ * Truncates a post slug.
+ *
+ * @since 3.6.0
+ * @access private
+ * @uses utf8_uri_encode() Makes sure UTF-8 characters are properly cut and encoded.
+ *
+ * @param string $slug The slug to truncate.
+ * @param int $length Max length of the slug.
+ * @return string The truncated slug.
+ */
+function _truncate_post_slug( $slug, $length = 200 ) {
+ if ( strlen( $slug ) > $length ) {
+ $decoded_slug = urldecode( $slug );
+ if ( $decoded_slug === $slug )
+ $slug = substr( $slug, 0, $length );
+ else
+ $slug = utf8_uri_encode( $decoded_slug, $length );
+ }
+
+ return rtrim( $slug, '-' );
+}
+
+/**
</ins><span class="cx"> * Adds tags to a post.
</span><span class="cx"> *
</span><span class="cx"> * @uses wp_set_post_tags() Same first two parameters, but the last parameter is always set to true.
</span></span></pre>
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