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hubzilla_ynh/sources/include/photos.php

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<?php
/**
* @file include/photos.php
* @brief Functions related to photo handling.
*/
require_once('include/permissions.php');
require_once('include/items.php');
require_once('include/photo/photo_driver.php');
require_once('include/text.php');
/**
* @brief
*
* @param array $channel
* @param array $observer
* @param array $args
* @return array
*/
function photo_upload($channel, $observer, $args) {
$ret = array('success' => false);
$channel_id = $channel['channel_id'];
$account_id = $channel['channel_account_id'];
if(! perm_is_allowed($channel_id, $observer['xchan_hash'], 'write_storage')) {
$ret['message'] = t('Permission denied.');
return $ret;
}
//call_hooks('photo_upload_begin', $args);
/*
* Determine the album to use
*/
$album = $args['album'];
if(intval($args['visible']) || $args['visible'] === 'true')
$visible = 1;
else
$visible = 0;
$deliver = true;
if(array_key_exists('deliver',$args))
$deliver = intval($args['deliver']);
// Set to default channel permissions. If the parent directory (album) has permissions set,
// use those instead. If we have specific permissions supplied, they take precedence over
// all other settings. 'allow_cid' being passed from an external source takes priority over channel settings.
// ...messy... needs re-factoring once the photos/files integration stabilises
$acl = new Zotlabs\Access\AccessList($channel);
if(array_key_exists('directory',$args) && $args['directory'])
$acl->set($args['directory']);
if(array_key_exists('allow_cid',$args))
$acl->set($args);
if( (array_key_exists('group_allow',$args))
|| (array_key_exists('contact_allow',$args))
|| (array_key_exists('group_deny',$args))
|| (array_key_exists('contact_deny',$args))) {
$acl->set_from_array($args);
}
$ac = $acl->get();
$os_storage = 0;
if($args['os_path'] && $args['getimagesize']) {
$imagedata = @file_get_contents($args['os_path']);
$filename = $args['filename'];
$filesize = strlen($imagedata);
// this is going to be deleted if it exists
$src = '/tmp/deletemenow';
$type = $args['getimagesize']['mime'];
$os_storage = 1;
}
elseif ($args['data'] || $args['content']) {
// allow an import from a binary string representing the image.
// This bypasses the upload step and max size limit checking
$imagedata = (($args['content']) ? $args['content'] : $args['data']);
$filename = $args['filename'];
$filesize = strlen($imagedata);
// this is going to be deleted if it exists
$src = '/tmp/deletemenow';
$type = (($args['mimetype']) ? $args['mimetype'] : $args['type']);
} else {
$f = array('src' => '', 'filename' => '', 'filesize' => 0, 'type' => '');
// call_hooks('photo_upload_file',$f);
if (x($f,'src') && x($f,'filesize')) {
$src = $f['src'];
$filename = $f['filename'];
$filesize = $f['filesize'];
$type = $f['type'];
} else {
$src = $_FILES['userfile']['tmp_name'];
$filename = basename($_FILES['userfile']['name']);
$filesize = intval($_FILES['userfile']['size']);
$type = $_FILES['userfile']['type'];
}
if (! $type)
$type=guess_image_type($filename);
logger('photo_upload: received file: ' . $filename . ' as ' . $src . ' ('. $type . ') ' . $filesize . ' bytes', LOGGER_DEBUG);
$maximagesize = get_config('system','maximagesize');
if (($maximagesize) && ($filesize > $maximagesize)) {
$ret['message'] = sprintf ( t('Image exceeds website size limit of %lu bytes'), $maximagesize);
@unlink($src);
call_hooks('photo_upload_end',$ret);
return $ret;
}
if (! $filesize) {
$ret['message'] = t('Image file is empty.');
@unlink($src);
call_hooks('photo_post_end',$ret);
return $ret;
}
logger('photo_upload: loading the contents of ' . $src , LOGGER_DEBUG);
$imagedata = @file_get_contents($src);
}
$r = q("select sum(filesize) as total from photo where aid = %d and imgscale = 0 ",
intval($account_id)
);
$limit = engr_units_to_bytes(service_class_fetch($channel_id,'photo_upload_limit'));
if (($r) && ($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
$ret['message'] = upgrade_message();
@unlink($src);
call_hooks('photo_post_end',$ret);
return $ret;
}
$ph = photo_factory($imagedata, $type);
if (! $ph->is_valid()) {
$ret['message'] = t('Unable to process image');
logger('photo_upload: unable to process image');
@unlink($src);
call_hooks('photo_upload_end',$ret);
return $ret;
}
$exif = $ph->orient(($args['os_path']) ? $args['os_path'] : $src);
@unlink($src);
$max_length = get_config('system','max_image_length');
if (! $max_length)
$max_length = MAX_IMAGE_LENGTH;
if ($max_length > 0)
$ph->scaleImage($max_length);
$width = $ph->getWidth();
$height = $ph->getHeight();
$smallest = 0;
$photo_hash = (($args['resource_id']) ? $args['resource_id'] : photo_new_resource());
$visitor = '';
if ($channel['channel_hash'] !== $observer['xchan_hash'])
$visitor = $observer['xchan_hash'];
$errors = false;
$p = array('aid' => $account_id, 'uid' => $channel_id, 'xchan' => $visitor, 'resource_id' => $photo_hash,
'filename' => $filename, 'album' => $album, 'imgscale' => 0, 'photo_usage' => PHOTO_NORMAL,
'allow_cid' => $ac['allow_cid'], 'allow_gid' => $ac['allow_gid'],
'deny_cid' => $ac['deny_cid'], 'deny_gid' => $ac['deny_gid'],
'os_storage' => $os_storage, 'os_path' => $args['os_path']
);
if($args['created'])
$p['created'] = $args['created'];
if($args['edited'])
$p['edited'] = $args['edited'];
if($args['title'])
$p['title'] = $args['title'];
if($args['description'])
$p['description'] = $args['description'];
$link = array();
$r0 = $ph->save($p);
$link[0] = array(
'rel' => 'alternate',
'type' => 'text/html',
'href' => z_root() . '/photo/' . $photo_hash . '-0.' . $ph->getExt(),
'width' => $ph->getWidth(),
'height' => $ph->getHeight()
);
if(! $r0)
$errors = true;
unset($p['os_storage']);
unset($p['os_path']);
if(($width > 1024 || $height > 1024) && (! $errors))
$ph->scaleImage(1024);
$p['imgscale'] = 1;
$r1 = $ph->save($p);
$link[1] = array(
'rel' => 'alternate',
'type' => 'text/html',
'href' => z_root() . '/photo/' . $photo_hash . '-1.' . $ph->getExt(),
'width' => $ph->getWidth(),
'height' => $ph->getHeight()
);
if(! $r1)
$errors = true;
if(($width > 640 || $height > 640) && (! $errors))
$ph->scaleImage(640);
$p['imgscale'] = 2;
$r2 = $ph->save($p);
$link[2] = array(
'rel' => 'alternate',
'type' => 'text/html',
'href' => z_root() . '/photo/' . $photo_hash . '-2.' . $ph->getExt(),
'width' => $ph->getWidth(),
'height' => $ph->getHeight()
);
if(! $r2)
$errors = true;
if(($width > 320 || $height > 320) && (! $errors))
$ph->scaleImage(320);
$p['imgscale'] = 3;
$r3 = $ph->save($p);
$link[3] = array(
'rel' => 'alternate',
'type' => 'text/html',
'href' => z_root() . '/photo/' . $photo_hash . '-3.' . $ph->getExt(),
'width' => $ph->getWidth(),
'height' => $ph->getHeight()
);
if(! $r3)
$errors = true;
if($errors) {
q("delete from photo where resource_id = '%s' and uid = %d",
dbesc($photo_hash),
intval($channel_id)
);
$ret['message'] = t('Photo storage failed.');
logger('photo_upload: photo store failed.');
call_hooks('photo_upload_end',$ret);
return $ret;
}
$item_hidden = (($visible) ? 0 : 1 );
$lat = $lon = null;
if($exif && $exif['GPS']) {
if(feature_enabled($channel_id,'photo_location')) {
$lat = getGps($exif['GPS']['GPSLatitude'], $exif['GPS']['GPSLatitudeRef']);
$lon = getGps($exif['GPS']['GPSLongitude'], $exif['GPS']['GPSLongitudeRef']);
}
}
$title = (($args['description']) ? $args['description'] : $args['filename']);
$large_photos = feature_enabled($channel['channel_id'], 'large_photos');
linkify_tags($a, $args['body'], $channel_id);
if($large_photos) {
$scale = 1;
$width = $link[1]['width'];
$height = $link[1]['height'];
$tag = (($r1) ? '[zmg=' . $width . 'x' . $height . ']' : '[zmg]');
}
else {
$scale = 2;
$width = $link[2]['width'];
$height = $link[2]['height'];
$tag = (($r2) ? '[zmg=' . $width . 'x' . $height . ']' : '[zmg]');
}
$author_link = '[zrl=' . z_root() . '/channel/' . $channel['channel_address'] . ']' . $channel['channel_name'] . '[/zrl]';
$photo_link = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo_hash . ']' . t('a new photo') . '[/zrl]';
$album_link = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/album/' . bin2hex($album) . ']' . ((strlen($album)) ? $album : '/') . '[/zrl]';
$activity_format = sprintf(t('%1$s posted %2$s to %3$s','photo_upload'), $author_link, $photo_link, $album_link);
$summary = (($args['body']) ? $args['body'] : '') . '[footer]' . $activity_format . '[/footer]';
$obj_body = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo_hash . ']'
. $tag . z_root() . "/photo/{$photo_hash}-{$scale}." . $ph->getExt() . '[/zmg]'
. '[/zrl]';
// Create item object
$object = array(
'type' => ACTIVITY_OBJ_PHOTO,
'title' => $title,
'created' => $p['created'],
'edited' => $p['edited'],
'id' => z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo_hash,
'link' => $link,
'body' => $obj_body
);
$target = array(
'type' => ACTIVITY_OBJ_ALBUM,
'title' => (($album) ? $album : '/'),
'id' => z_root() . '/photos/' . $channel['channel_address'] . '/album/' . bin2hex($album)
);
// Create item container
if($args['item']) {
foreach($args['item'] as $i) {
$item = get_item_elements($i);
$force = false;
if($item['mid'] === $item['parent_mid']) {
$item['body'] = $summary;
$item['obj_type'] = ACTIVITY_OBJ_PHOTO;
$item['obj'] = json_encode($object);
$item['tgt_type'] = ACTIVITY_OBJ_ALBUM;
$item['target'] = json_encode($target);
if($item['author_xchan'] === $channel['channel_hash']) {
$item['sig'] = base64url_encode(rsa_sign($item['body'],$channel['channel_prvkey']));
$item['item_verified'] = 1;
}
else {
$item['sig'] = '';
}
$force = true;
}
$r = q("select id, edited from item where mid = '%s' and uid = %d limit 1",
dbesc($item['mid']),
intval($channel['channel_id'])
);
if($r) {
if(($item['edited'] > $r[0]['edited']) || $force) {
$item['id'] = $r[0]['id'];
$item['uid'] = $channel['channel_id'];
item_store_update($item,false,$deliver);
continue;
}
}
else {
$item['aid'] = $channel['channel_account_id'];
$item['uid'] = $channel['channel_id'];
$item_result = item_store($item,false,$deliver);
}
}
}
else {
$mid = item_message_id();
$arr = array();
if($lat && $lon)
$arr['coord'] = $lat . ' ' . $lon;
$arr['aid'] = $account_id;
$arr['uid'] = $channel_id;
$arr['mid'] = $mid;
$arr['parent_mid'] = $mid;
$arr['item_hidden'] = $item_hidden;
$arr['resource_type'] = 'photo';
$arr['resource_id'] = $photo_hash;
$arr['owner_xchan'] = $channel['channel_hash'];
$arr['author_xchan'] = $observer['xchan_hash'];
$arr['title'] = $title;
$arr['allow_cid'] = $ac['allow_cid'];
$arr['allow_gid'] = $ac['allow_gid'];
$arr['deny_cid'] = $ac['deny_cid'];
$arr['deny_gid'] = $ac['deny_gid'];
$arr['verb'] = ACTIVITY_POST;
$arr['obj_type'] = ACTIVITY_OBJ_PHOTO;
$arr['obj'] = json_encode($object);
$arr['tgt_type'] = ACTIVITY_OBJ_ALBUM;
$arr['target'] = json_encode($target);
$arr['item_wall'] = 1;
$arr['item_origin'] = 1;
$arr['item_thread_top'] = 1;
$arr['item_private'] = intval($acl->is_private());
$arr['plink'] = z_root() . '/channel/' . $channel['channel_address'] . '/?f=&mid=' . $arr['mid'];
$arr['body'] = $summary;
// this one is tricky because the item and the photo have the same permissions, those of the photo.
// Use the channel read_stream permissions to get the correct public_policy for the item and recalculate the
// private flag accordingly. This may cause subtle bugs due to custom permissions roles. We want to use
// public policy when federating items to other sites, but should probably ignore them when accessing the item
// in the photos pages - using the photos permissions instead. We need the public policy to keep the photo
// linked item from leaking into the feed when somebody has a channel with read_stream restrictions.
$arr['public_policy'] = map_scope(\Zotlabs\Access\PermissionLimits::Get($channel['channel_id'],'view_stream'),true);
if($arr['public_policy'])
$arr['item_private'] = 1;
$result = item_store($arr,false,$deliver);
$item_id = $result['item_id'];
if($visible && $deliver)
Zotlabs\Daemon\Master::Summon(array('Notifier', 'wall-new', $item_id));
}
$ret['success'] = true;
$ret['item'] = $arr;
$ret['body'] = $obj_body;
$ret['resource_id'] = $photo_hash;
$ret['photoitem_id'] = $item_id;
call_hooks('photo_upload_end',$ret);
return $ret;
}
/**
* @brief Returns a list with all photo albums observer is allowed to see.
*
* Returns an associative array with all albums where observer has permissions.
*
* @param array $channel
* @param array $observer
* @param array $sort_key (optional) default album
* @param array $direction (optional) default asc
*
* @return bool|array false if no view_storage permission or an array
* * \e boolean \b success
* * \e array \b albums
*/
function photos_albums_list($channel, $observer, $sort_key = 'album', $direction = 'asc') {
$channel_id = $channel['channel_id'];
$observer_xchan = (($observer) ? $observer['xchan_hash'] : '');
if(! perm_is_allowed($channel_id, $observer_xchan, 'view_storage'))
return false;
$sql_extra = permissions_sql($channel_id,$observer_xchan);
$sort_key = dbesc($sort_key);
$direction = dbesc($direction);
$albums = q("SELECT count( distinct resource_id ) as total, album from photo where uid = %d and photo_usage IN ( %d, %d ) $sql_extra group by album order by $sort_key $direction",
intval($channel_id),
intval(PHOTO_NORMAL),
intval(PHOTO_PROFILE)
);
// add various encodings to the array so we can just loop through and pick them out in a template
$ret = array('success' => false);
if($albums) {
$ret['success'] = true;
$ret['albums'] = array();
foreach($albums as $k => $album) {
$entry = array(
'text' => (($album['album']) ? $album['album'] : '/'),
'total' => $album['total'],
'url' => z_root() . '/photos/' . $channel['channel_address'] . '/album/' . bin2hex($album['album']),
'urlencode' => urlencode($album['album']),
'bin2hex' => bin2hex($album['album'])
);
$ret['albums'][] = $entry;
}
}
return $ret;
}
function photos_album_widget($channelx,$observer,$sortkey = 'album',$direction = 'asc') {
$o = '';
if(array_key_exists('albums', App::$data))
$albums = App::$data['albums'];
else
$albums = photos_albums_list($channelx,$observer,$sortkey,$direction);
if($albums['success']) {
$o = replace_macros(get_markup_template('photo_albums.tpl'),array(
'$nick' => $channelx['channel_address'],
'$title' => t('Photo Albums'),
'$albums' => $albums['albums'],
'$baseurl' => z_root(),
'$upload' => ((perm_is_allowed($channelx['channel_id'],(($observer) ? $observer['xchan_hash'] : ''),'write_storage'))
? t('Upload New Photos') : '')
));
}
return $o;
}
/**
* @brief
*
* @param array $channel
* @param array $observer
* @param string $album default empty
* @return boolean|array
*/
function photos_list_photos($channel, $observer, $album = '') {
$channel_id = $channel['channel_id'];
$observer_xchan = (($observer) ? $observer['xchan_hash'] : '');
if(! perm_is_allowed($channel_id,$observer_xchan,'view_storage'))
return false;
$sql_extra = permissions_sql($channel_id);
if($album)
$sql_extra .= " and album = '" . protect_sprintf(dbesc($album)) . "' ";
$ret = array('success' => false);
$r = q("select resource_id, created, edited, title, description, album, filename, mimetype, height, width, filesize, imgscale, photo_usage, allow_cid, allow_gid, deny_cid, deny_gid from photo where uid = %d and photo_usage in ( %d, %d ) $sql_extra ",
intval($channel_id),
intval(PHOTO_NORMAL),
intval(PHOTO_PROFILE)
);
if($r) {
for($x = 0; $x < count($r); $x ++) {
$r[$x]['src'] = z_root() . '/photo/' . $r[$x]['resource_id'] . '-' . $r[$x]['imgscale'];
}
$ret['success'] = true;
$ret['photos'] = $r;
}
return $ret;
}
/**
* @brief Check if given photo album exists in channel.
*
* @param int $channel_id id of the channel
* @param string $album name of the album
* @return boolean
*/
function photos_album_exists($channel_id, $album) {
$r = q("SELECT id FROM photo WHERE album = '%s' AND uid = %d limit 1",
dbesc($album),
intval($channel_id)
);
return (($r) ? true : false);
}
/**
* @brief Renames a photo album in a channel.
*
* @todo Do we need to check if new album name already exists?
*
* @param int $channel_id id of the channel
* @param string $oldname The name of the album to rename
* @param string $newname The new name of the album
* @return bool|array
*/
function photos_album_rename($channel_id, $oldname, $newname) {
return q("UPDATE photo SET album = '%s' WHERE album = '%s' AND uid = %d",
dbesc($newname),
dbesc($oldname),
intval($channel_id)
);
}
/**
* @brief
*
* @param int $channel_id
* @param string $album
* @param string $remote_xchan
* @return string|boolean
*/
function photos_album_get_db_idstr($channel_id, $album, $remote_xchan = '') {
if ($remote_xchan) {
$r = q("SELECT distinct resource_id from photo where xchan = '%s' and uid = %d and album = '%s' ",
dbesc($remote_xchan),
intval($channel_id),
dbesc($album)
);
} else {
$r = q("SELECT distinct resource_id from photo where uid = %d and album = '%s' ",
intval($channel_id),
dbesc($album)
);
}
if ($r) {
$arr = array();
foreach ($r as $rr) {
$arr[] = "'" . dbesc($rr['resource_id']) . "'" ;
}
$str = implode(',',$arr);
return $str;
}
return false;
}
/**
* @brief Creates a new photo item.
*
* @param array $channel
* @param string $creator_hash
* @param array $photo
* @param boolean $visible default false
* @return int item_id
*/
function photos_create_item($channel, $creator_hash, $photo, $visible = false) {
// Create item container
$item_hidden = (($visible) ? 0 : 1 );
$mid = item_message_id();
$arr = array();
$arr['aid'] = $channel['channel_account_id'];
$arr['uid'] = $channel['channel_id'];
$arr['mid'] = $mid;
$arr['parent_mid'] = $mid;
$arr['item_wall'] = 1;
$arr['item_origin'] = 1;
$arr['item_thread_top'] = 1;
$arr['item_hidden'] = $item_hidden;
$arr['resource_type'] = 'photo';
$arr['resource_id'] = $photo['resource_id'];
$arr['owner_xchan'] = $channel['channel_hash'];
$arr['author_xchan'] = $creator_hash;
$arr['allow_cid'] = $photo['allow_cid'];
$arr['allow_gid'] = $photo['allow_gid'];
$arr['deny_cid'] = $photo['deny_cid'];
$arr['deny_gid'] = $photo['deny_gid'];
$arr['plink'] = z_root() . '/channel/' . $channel['channel_address'] . '/?f=&mid=' . $arr['mid'];
$arr['body'] = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo['resource_id'] . ']'
. '[zmg]' . z_root() . '/photo/' . $photo['resource_id'] . '-' . $photo['imgscale'] . '[/zmg]'
. '[/zrl]';
$result = item_store($arr);
$item_id = $result['item_id'];
return $item_id;
}
function getGps($exifCoord, $hemi) {
$degrees = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
$minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
$seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
$flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
}
function getGpstimestamp($exifCoord) {
$hours = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
$minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
$seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
return sprintf('%02d:%02d:%02d',$hours,$minutes,$seconds);
}
function gps2Num($coordPart) {
$parts = explode('/', $coordPart);
if (count($parts) <= 0)
return 0;
if (count($parts) == 1)
return $parts[0];
return floatval($parts[0]) / floatval($parts[1]);
}
function profile_photo_set_profile_perms($uid, $profileid = 0) {
$allowcid = '';
if($profileid) {
$r = q("SELECT photo, profile_guid, id, is_default, uid
FROM profile WHERE uid = %d and ( profile.id = %d OR profile.profile_guid = '%s') LIMIT 1",
intval($uid),
intval($profileid),
dbesc($profileid)
);
}
else {
logger('Resetting permissions on default-profile-photo for user'.local_channel());
$r = q("SELECT photo, profile_guid, id, is_default, uid FROM profile
WHERE profile.uid = %d AND is_default = 1 LIMIT 1",
intval($uid)
); //If no profile is given, we update the default profile
}
if(! $r)
return;
$profile = $r[0];
if($profile['id'] && $profile['photo']) {
preg_match("@\w*(?=-\d*$)@i", $profile['photo'], $resource_id);
$resource_id = $resource_id[0];
if (! intval($profile['is_default'])) {
$r0 = q("SELECT channel_hash FROM channel WHERE channel_id = %d LIMIT 1",
intval($uid)
);
//Should not be needed in future. Catches old int-profile-ids.
$r1 = q("SELECT abook.abook_xchan FROM abook WHERE abook_profile = '%d' ",
intval($profile['id'])
);
$r2 = q("SELECT abook.abook_xchan FROM abook WHERE abook_profile = '%s'",
dbesc($profile['profile_guid'])
);
$allowcid = "<" . $r0[0]['channel_hash'] . ">";
foreach ($r1 as $entry) {
$allowcid .= "<" . $entry['abook_xchan'] . ">";
}
foreach ($r2 as $entry) {
$allowcid .= "<" . $entry['abook_xchan'] . ">";
}
q("UPDATE photo SET allow_cid = '%s' WHERE resource_id = '%s' AND uid = %d",
dbesc($allowcid),
dbesc($resource_id),
intval($uid)
);
}
else {
//Reset permissions on default profile picture to public
q("UPDATE photo SET allow_cid = '' WHERE photo_usage = %d AND uid = %d",
intval(PHOTO_PROFILE),
intval($uid)
);
}
}
return;
}
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