diff --git a/include/bbcode.php b/include/bbcode.php index 55a8794976..6a1c4b043b 100644 --- a/include/bbcode.php +++ b/include/bbcode.php @@ -47,6 +47,67 @@ function bb_unspacefy_and_trim($st) { return $unspacefied; } +if(! function_exists('bb_extract_images')) { +function bb_extract_images($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); + $cnt++; + + $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]'; + } + 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' => $saved_image); +}} + +if(! function_exists('bb_replace_images')) { +function bb_replace_images($body, $images) { + + $newbody = $body; + + $cnt = 0; + foreach($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' . $cnt . '#$]', '' . t('Image/photo') . '', $newbody); + $cnt++; + } + + return $newbody; +}} + + + // BBcode 2 HTML was written by WAY2WEB.net // extended to work with Mistpark/Friendica - Mike Macgirvin @@ -54,29 +115,21 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true) { $a = get_app(); - // Hide all [noparse] contained bbtags spacefying them + // Hide all [noparse] contained bbtags by spacefying them + // POSSIBLE BUG --> Will the 'preg' functions crash if there's an embedded image? $Text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'bb_spacefy',$Text); $Text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'bb_spacefy',$Text); $Text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'bb_spacefy',$Text); - // Extract a single private image which uses data url's since preg has issues with - // large data sizes. Stash it away while we do bbcode conversion, and then put it back + // Extract the private images which use data url's since preg has issues with + // large data sizes. Stash them away while we do bbcode conversion, and then put them back // in after we've done all the regex matching. We cannot use any preg functions to do this. - $saved_image = ''; - $img_start = strpos($Text,'[img]data:'); - $img_end = strpos($Text,'[/img]'); - - if($img_start !== false && $img_end !== false && $img_end > $img_start) { - $start_fragment = substr($Text,0,$img_start); - $img_start += strlen('[img]'); - $saved_image = substr($Text,$img_start,$img_end - $img_start); - $end_fragment = substr($Text,$img_end + strlen('[/img]')); -// logger('saved_image: ' . $saved_image,LOGGER_DEBUG); - $Text = $start_fragment . '[$#saved_image#$]' . $end_fragment; - } + $extracted = bb_extract_images($Text); + $Text = $extracted['body']; + $saved_image = $extracted['images']; // If we find any event code, turn it into an event. // After we're finished processing the bbcode we'll @@ -333,8 +386,9 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true) { // fix any escaped ampersands that may have been converted into links $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text); - if(strlen($saved_image)) - $Text = str_replace('[$#saved_image#$]','' . t('Image/photo') . '',$Text); + + if($saved_image) + $Text = bb_replace_images($Text, $saved_image); call_hooks('bbcode',$Text); diff --git a/include/conversation.php b/include/conversation.php index bbb6a1f85b..4fea52c9c7 100644 --- a/include/conversation.php +++ b/include/conversation.php @@ -1,30 +1,85 @@ $new_body, 'images' => $saved_image); +}} + +if(! function_exists('item_redir_and_replace_images')) { +function item_redir_and_replace_images($body, $images, $cid) { + + $newbody = $body; + + for($i = 0; $i < count($images); $i++) { + $search = '/\[url\=(.*?)\]\[!#saved_image' . $i . '#!\]\[\/url\]' . '/is'; + $replace = '[url=' . z_path() . '/redir/' . $cid + . '?f=1&url=' . '$1' . '][!#saved_image' . $i . '#!][/url]' ; + + $newbody = preg_replace($search, $replace, $newbody); + } + + $cnt = 0; + foreach($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 $newbody; +}} + + + /** * Render actions localized */ function localize_item(&$item){ - $Text = $item['body']; - $saved_image = ''; - $img_start = strpos($Text,'[img]data:'); - $img_end = strpos($Text,'[/img]'); - - if($img_start !== false && $img_end !== false && $img_end > $img_start) { - $start_fragment = substr($Text,0,$img_start); - $img_start += strlen('[img]'); - $saved_image = substr($Text,$img_start,$img_end - $img_start); - $end_fragment = substr($Text,$img_end + strlen('[/img]')); - $Text = $start_fragment . '[!#saved_image#!]' . $end_fragment; - $search = '/\[url\=(.*?)\]\[!#saved_image#!\]\[\/url\]' . '/is'; - $replace = '[url=' . z_path() . '/redir/' . $item['contact-id'] - . '?f=1&url=' . '$1' . '][!#saved_image#!][/url]' ; - - $Text = preg_replace($search,$replace,$Text); - - if(strlen($saved_image)) - $item['body'] = str_replace('[!#saved_image#!]', '[img]' . $saved_image . '[/img]',$Text); - } + $extracted = item_extract_images($item['body']); + if($extracted['images']) + $item['body'] = item_redir_and_replace_images($extracted['body'], $extracted['images'], $item['contact-id']); $xmlhead="<"."?xml version='1.0' encoding='UTF-8' ?".">"; if ($item['verb']=== ACTIVITY_LIKE || $item['verb']=== ACTIVITY_DISLIKE){ diff --git a/include/items.php b/include/items.php index 2cd0e61079..7bb33d9439 100755 --- a/include/items.php +++ b/include/items.php @@ -4,6 +4,8 @@ require_once('include/bbcode.php'); require_once('include/oembed.php'); require_once('include/salmon.php'); require_once('include/crypto.php'); +require_once('include/Photo.php'); + function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) { @@ -284,19 +286,6 @@ function construct_activity_target($item) { * * The purpose of this function is to apply system message length limits to * imported messages without including any embedded photos in the length - * - * How it works (other than when the body length is less than the max length at the outset): - * 1. When the text length without embedded images is less than the max length - * a. The while() loop does run, since there are embedded images - * b. - * - * 2. When the text length exceeds the max length before the first embedded image - * - * 3. When the text length exceeds the max length in between embedded images - * - * 4. When the text length exceeds the max length after the last embedded image - * - * 5. When there are no embedded images */ if(! function_exists('limit_body_size')) { function limit_body_size($body) { @@ -306,84 +295,80 @@ function limit_body_size($body) { $maxlen = get_max_import_size(); // If the length of the body, including the embedded images, is smaller - // than the maximum, then don't waste processing looking for the images + // than the maximum, then don't waste time looking for the images if($maxlen && (strlen($body) > $maxlen)) { - logger('limit_body_size: the body length exceeds the limit', LOGGER_DEBUG); + logger('limit_body_size: the total body length exceeds the limit', LOGGER_DEBUG); - $img_pos = array(); - $max_pos = 0; + $orig_body = $body; + $new_body = ''; + $textlen = 0; + $max_found = false; - $body_left = $body; - $cnt = 0; - $img_pos[$cnt] = array('start' => strpos($body_left, '[img]data:')); - while($img_pos[$cnt]['start'] !== false) { + $img_start = strpos($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)) { - // We're assuming that at this point, every opening '[img]data:' tag has a closing [/img] tag - $img_pos[$cnt]['end'] = strpos(substr($body_left, $img_pos[$cnt]['start'], strlen($body_left) - $img_pos[$cnt]['start']), '[/img]'); - $img_pos[$cnt]['end'] += strlen('[/img]'); - $img_pos[$cnt]['end'] += $img_pos[$cnt]['start']; + $img_st_close++; // make it point to AFTER the closing bracket + $img_end += $img_start; + $img_end += strlen('[/img]'); - if(! $cnt) { - // This code should only run in the first loop - $textlen = $img_pos[$cnt]['start']; - if( ($maxlen - $textlen) <= 0 ) { - $maxpos = $maxlen; - $maxcnt = $cnt; + if(! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) { + // This is an embedded image + + if( ($textlen + $img_start) > $maxlen ) { + if($textlen < $maxlen) { + logger('limit_body_size: the limit happens before an embedded image', LOGGER_DEBUG); + $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen); + $textlen = $maxlen; + } } + else { + $new_body = $new_body . substr($orig_body, 0, $img_start); + $textlen += $img_start + } + + $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start); } else { - $newlen = $img_pos[$cnt]['start'] - $img_pos[$cnt - 1]['end']; // The length between the last embedded image and the next - if( (! $max_pos) && (($maxlen - ($textlen + $newlen)) <= 0) ) { - // $max_pos should be 0 until the message text exceeds the limit. - // If the limit has already been set, don't set it again - $len_left = $maxlen - $textlen; - $maxpos = $img_pos[$cnt - 1]['end'] + $len_left; // We'll cut off the text at this position - $maxcnt = $cnt; + + if( ($textlen + $img_end) > $maxlen ) { + if($textlen < $maxlen) { + logger('limit_body_size: the limit happens before the end of a non-embedded image', LOGGER_DEBUG); + $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen); + $textlen = $maxlen; + } + } + else { + $new_body = $new_body . substr($orig_body, 0, $img_end); + $textlen += $img_end; } - - $textlen += $newlen; } + $orig_body = substr($orig_body, $img_end); - $body_left = substr($body_left, $img_pos[$cnt]['end'], strlen($body_left) - $img_pos[$cnt]['end']); - $cnt++; - $img_pos[$cnt] = array('start' => strpos($body_left, '[img]data:') + $img_pos[$cnt - 1]['end']); + 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); } - logger('limit_body_size: the while loop ran ' . $cnt . ' times', LOGGER_DEBUG); - - if(! $cnt) { - // The while() loop never ran -- there are no embedded images - $maxpos = $maxlen; - $maxcnt = $cnt; - $textlen = strlen($body); + if( ($textlen + strlen($orig_body)) > $maxlen) { + if($textlen < $maxlen) { + logger('limit_body_size: the limit happens after the end of the last image', LOGGER_DEBUG); + $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen); + $textlen = $maxlen; + } } else { - // The while() loop did run. But the end of the last embedded image may not be the end of the body - // Check if the maximum length occurs between the end of the last embedded image and the end of the text - $newlen = strlen($body_left); - if( (! $max_pos) && (($maxlen - ($textlen + $newlen)) <= 0) ) { - $len_left = $maxlen - $textlen; - $maxpos = $img_pos[$cnt - 1]['end'] + $len_left; // We'll cut off the text at this position - $maxcnt = $cnt; - } - $textlen += $newlen; + logger('limit_body_size: the text size with embedded images extracted did not violate the limit', LOGGER_DEBUG); + $new_body = $new_body . $orig_body; + $textlen += strlen($orig_body); } - - if($textlen > $maxlen) { - $newbody = substr($body, 0, $maxpos); // Note: $maxpos is the position of the character AFTER the maximum length - - // Now pile all the remaining embedded images onto the end - for($i = $maxcnt; $i < $cnt; $i++) - $newbody = $newbody . substr($body, $img_pos[$i]['start'], $img_pos[$i]['end'] - $img_pos[$i]['start']); - - logger('limit_body_size: the text length (w/o embedded images) was ' . $textlen . ' and the limit was ' . $maxlen . '. Body truncated', LOGGER_DEBUG); - - return $newbody; - } - else // When embedded images are excluded, the text length is less than the maximum, so we're good - return $body; + return $new_body; } else return $body; @@ -3196,20 +3181,33 @@ function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) { return $o; } -function fix_private_photos($s,$uid, $item = null, $cid = 0) { +function fix_private_photos($s, $uid, $item = null, $cid = 0) { $a = get_app(); logger('fix_private_photos', LOGGER_DEBUG); $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://')); - if(preg_match("/\[img(.*?)\](.*?)\[\/img\]/is",$s,$matches)) { - $image = $matches[2]; + $orig_body = $s; + $new_body = ''; + + $img_start = strpos($orig_body, '[img'); + $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false); + $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false); + while( ($img_st_close !== false) && ($img_len !== false) ) { + + $img_st_close++; // make it point to AFTER the closing bracket + $image = substr($orig_body, $img_start + $img_st_close, $img_len); + logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG); + + if(stristr($image , $site . '/photo/')) { + // Only embed locally hosted photos $replace = false; $i = basename($image); $i = str_replace(array('.jpg','.png'),array('',''),$i); $x = strpos($i,'-'); + if($x) { $res = substr($i,$x+1); $i = substr($i,0,$x); @@ -3228,9 +3226,6 @@ function fix_private_photos($s,$uid, $item = null, $cid = 0) { // permissions, regardless of order but first check to see if they're an exact // match to save some processing overhead. - // Currently we only embed one private photo per message so as not to hit import - // size limits at the receiving end. - // To embed multiples, we would need to parse out the embedded photos on message // receipt and limit size based only on the text component. Would also need to // ignore all photos during bbcode translation and item localisation, as these @@ -3249,15 +3244,45 @@ function fix_private_photos($s,$uid, $item = null, $cid = 0) { } } if($replace) { + $data = $r[0]['data']; + $type = $r[0]['type']; + + // If a custom width and height were specified, apply before embedding + if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) { + logger('fix_private_photos: scaling photo', LOGGER_DEBUG); + + $width = intval($match[1]); + $height = intval($match[2]); + + $ph = new Photo($data, $type); + if($ph->is_valid()) { + $ph->scaleImage(max($width, $height)); + $data = $ph->imageString(); + $type = $ph->getType(); + } + } + logger('fix_private_photos: replacing photo', LOGGER_DEBUG); - $s = str_replace($image, 'data:' . $r[0]['type'] . ';base64,' . base64_encode($r[0]['data']), $s); - logger('fix_private_photos: replaced: ' . $s, LOGGER_DATA); + $image = 'data:' . $type . ';base64,' . base64_encode($data); + logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA); } } } } + + $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]'; + $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]')); + if($orig_body === false) + $orig_body = ''; + + $img_start = strpos($orig_body, '[img'); + $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false); + $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false); } - return($s); + + $new_body = $new_body + $orig_body; + + return($new_body); } diff --git a/mod/message.php b/mod/message.php index 80d2c6d99a..4ffdebb121 100644 --- a/mod/message.php +++ b/mod/message.php @@ -88,6 +88,77 @@ function message_post(&$a) { } +// Note: the code in 'item_extract_images' and 'item_redir_and_replace_images' +// is identical to the code in include/conversation.php +if(! function_exists('item_extract_images')) { +function item_extract_images($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); + $cnt++; + + $new_body = $new_body . substr($orig_body, 0, $img_start) . '[!#saved_image' . $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) { + + $newbody = $body; + + for($i = 0; $i < count($images); $i++) { + $search = '/\[url\=(.*?)\]\[!#saved_image' . $i . '#!\]\[\/url\]' . '/is'; + $replace = '[url=' . z_path() . '/redir/' . $cid + . '?f=1&url=' . '$1' . '][!#saved_image' . $i . '#!][/url]' ; + + $newbody = preg_replace($search, $replace, $newbody); + } + + $cnt = 0; + foreach($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 $newbody; +}} + + + function message_content(&$a) { $o = ''; @@ -345,26 +416,9 @@ function message_content(&$a) { } - $Text = $message['body']; - $saved_image = ''; - $img_start = strpos($Text,'[img]data:'); - $img_end = strpos($Text,'[/img]'); - - if($img_start !== false && $img_end !== false && $img_end > $img_start) { - $start_fragment = substr($Text,0,$img_start); - $img_start += strlen('[img]'); - $saved_image = substr($Text,$img_start,$img_end - $img_start); - $end_fragment = substr($Text,$img_end + strlen('[/img]')); - $Text = $start_fragment . '[!#saved_image#!]' . $end_fragment; - $search = '/\[url\=(.*?)\]\[!#saved_image#!\]\[\/url\]' . '/is'; - $replace = '[url=' . z_path() . '/redir/' . $message['contact-id'] - . '?f=1&url=' . '$1' . '][!#saved_image#!][/url]' ; - - $Text = preg_replace($search,$replace,$Text); - - if(strlen($saved_image)) - $message['body'] = str_replace('[!#saved_image#!]', '[img]' . $saved_image . '[/img]',$Text); - } + $extracted = item_extract_images($message['body']); + if($extracted['images']) + $message['body'] = item_redir_and_replace_images($extracted['body'], $extracted['images'], $message['contact-id']); $mails[] = array( 'id' => $message['id'],