+require_once("include/bbcode.php");
+require_once("include/acl_selectors.php");
+
+
+// Note: the code in 'item_extract_images' and 'item_redir_and_replace_images'
+// is identical to the code in mod/message.php for 'item_extract_images' and
+// 'item_redir_and_replace_images'
+if(! function_exists('item_extract_images')) {
+function item_extract_images($body) {
+
+ $saved_image = array();
+ $orig_body = $body;
+ $new_body = '';
+
+ $cnt = 0;
+ $img_start = strpos($orig_body, '[img');
+ $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
+ $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
+ while(($img_st_close !== false) && ($img_end !== false)) {
+
+ $img_st_close++; // make it point to AFTER the closing bracket
+ $img_end += $img_start;
+
+ if(! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
+ // This is an embedded image
+
+ $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
+ $new_body = $new_body . substr($orig_body, 0, $img_start) . '[!#saved_image' . $cnt . '#!]';
+
+ $cnt++;
+ }
+ else
+ $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
+
+ $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
+
+ if($orig_body === false) // in case the body ends on a closing image tag
+ $orig_body = '';
+
+ $img_start = strpos($orig_body, '[img');
+ $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
+ $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
+ }
+
+ $new_body = $new_body . $orig_body;
+
+ return array('body' => $new_body, 'images' => $saved_image);
+}}
+
+if(! function_exists('item_redir_and_replace_images')) {
+function item_redir_and_replace_images($body, $images, $cid) {
+
+ $origbody = $body;
+ $newbody = '';
+
+ $cnt = 1;
+ $pos = get_bb_tag_pos($origbody, 'url', 1);
+ while($pos !== false && $cnt < 1000) {
+
+ $search = '/\[url\=(.*?)\]\[!#saved_image([0-9]*)#!\]\[\/url\]' . '/is';
+ $replace = '[url=' . z_path() . '/redir/' . $cid
+ . '?f=1&url=' . '$1' . '][!#saved_image' . '$2' .'#!][/url]';
+
+ $newbody .= substr($origbody, 0, $pos['start']['open']);
+ $subject = substr($origbody, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
+ $origbody = substr($origbody, $pos['end']['close']);
+ if($origbody === false)
+ $origbody = '';
+
+ $subject = preg_replace($search, $replace, $subject);
+ $newbody .= $subject;
+
+ $cnt++;
+ $pos = get_bb_tag_pos($origbody, 'url', 1);
+ }
+ $newbody .= $origbody;
+
+ $cnt = 0;
+ foreach($images as $image) {
+ // We're depending on the property of 'foreach' (specified on the PHP website) that
+ // it loops over the array starting from the first element and going sequentially
+ // to the last element
+ $newbody = str_replace('[!#saved_image' . $cnt . '#!]', '[img]' . $image . '[/img]', $newbody);
+ $cnt++;
+ }
+ return $newbody;
+}}
+
+
+