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allow more than one embedded private photo

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This commit is contained in:
Zach Prezkuta 2012-07-07 16:20:24 -06:00
parent 57635e7684
commit 173b3a1b9a
4 changed files with 327 additions and 139 deletions
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88
include/bbcode.php
View file

@ -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' . $cnt . '#$]', '<img src="' . $image .'" alt="' . 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)=(.*?)\&amp\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
if(strlen($saved_image))
$Text = str_replace('[$#saved_image#$]','<img src="' . $saved_image .'" alt="' . t('Image/photo') . '" />',$Text);
if($saved_image)
$Text = bb_replace_images($Text, $saved_image);
call_hooks('bbcode',$Text);

95
include/conversation.php
View file

@ -1,30 +1,85 @@
<?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);
$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 $newbody;
}}
/**
* Render actions localized
*/
function localize_item(&$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){

189
include/items.php
View file

@ -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);
}

94
mod/message.php
View file

@ -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'],