file/attachment storage api with revision control - needs a bit more testing but the framework is in place
This commit is contained in:
friendica
@@ -104,7 +104,7 @@ function attach_count_files($channel_id, $observer, $hash = '', $filename = '',
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if($filetype)
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$sql_extra .= protect_sprintf(" and filetype like '@" . dbesc($filetype) . "@' ");
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$r = q("select id from attach where channel_id = %d $sql_extra",
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$r = q("select id from attach where uid = %d $sql_extra",
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intval($channel_id)
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);
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@@ -140,7 +140,7 @@ function attach_list_files($channel_id, $observer, $hash = '', $filename = '', $
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// Retrieve all columns except 'data'
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$r = q("select id, aid, uid, hash, filename, filetype, filesize, created, edited, allow_cid, allow_gid, deny_cid, deny_gid from attach where channel_id = %d $sql_extra $orderby $limit",
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$r = q("select id, aid, uid, hash, filename, filetype, filesize, revision, created, edited, allow_cid, allow_gid, deny_cid, deny_gid from attach where uid = %d $sql_extra $orderby $limit",
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intval($channel_id)
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);
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@@ -149,3 +149,282 @@ function attach_list_files($channel_id, $observer, $hash = '', $filename = '', $
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return $ret;
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}
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function attach_by_hash($hash,$rev = 0) {
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$ret = array('success' => false);
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// Check for existence, which will also provide us the owner uid
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$sql_extra = '';
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if($rev == (-1))
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$sql_extra = " order by revision desc ";
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elseif($rev)
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$sql_extra = " and revision = " . intval($rev) . " ";
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$r = q("SELECT uid FROM attach WHERE hash = '%s' $sql_extra LIMIT 1",
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dbesc($hash)
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);
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if(! $r) {
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$ret['message'] = t('Item was not found.');
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return $ret;
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}
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if(! perm_is_allowed($r[0]['uid'],get_observer_hash(),'view_storage')) {
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$ret['message'] = t('Permission denied.');
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return $ret;
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}
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$sql_extra = permissions_sql($r[0]['uid']);
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// Now we'll see if we can access the attachment
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$r = q("SELECT * FROM attach WHERE hash = '%s' and uid = %d $sql_extra LIMIT 1",
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dbesc($hash),
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intval($r[0]['uid'])
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);
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if(! $r) {
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$ret['message'] = t('Permission denied.');
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return $ret;
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}
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$ret['success'] = true;
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$ret['data'] = $r[0];
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return $ret;
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}
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function attach_by_hash_nodata($hash,$rev = 0) {
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$ret = array('success' => false);
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// Check for existence, which will also provide us the owner uid
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$sql_extra = '';
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if($rev == (-1))
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$sql_extra = " order by revision desc ";
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elseif($rev)
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$sql_extra = " and revision = " . intval($rev) . " ";
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$r = q("SELECT uid FROM attach WHERE hash = '%s' $sql_extra LIMIT 1",
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dbesc($hash)
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);
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if(! $r) {
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$ret['message'] = t('Item was not found.');
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return $ret;
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}
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if(! perm_is_allowed($r[0]['uid'],get_observer_hash(),'view_storage')) {
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$ret['message'] = t('Permission denied.');
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return $ret;
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}
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$sql_extra = permissions_sql($r[0]['uid']);
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// Now we'll see if we can access the attachment
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$r = q("select id, aid, uid, hash, filename, filetype, filesize, revision, created, edited, allow_cid, allow_gid, deny_cid, deny_gid from attach where uid = %d and hash = '%s' $sql_extra limit 1",
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intval($r[0]['uid']),
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dbesc($hash)
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);
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if(! $r) {
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$ret['message'] = t('Permission denied.');
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return $ret;
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}
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$ret['success'] = true;
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$ret['data'] = $r[0];
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return $ret;
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}
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function attach_store($channel,$observer_hash,$options = '',$arr = null) {
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$ret = array('success' => false);
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$channel_id = $channel['channel_id'];
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$sql_options = '';
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if(! perm_is_allowed($channel_id,$observer_hash(),'write_storage')) {
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$ret['message'] = t('Permission denied.');
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return $ret;
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}
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// The 'update' option sets db values without uploading a new attachment
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// 'replace' replaces the existing uploaded data
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// 'revision' creates a new revision with new upload data
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// Default is to upload a new file
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// revise or update must provide $arr['hash'] of the thing to revise/update
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if($options !== 'update') {
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if(! x($_FILES,'userfile')) {
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$ret['message'] = t('No source file.');
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return $ret;
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}
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$src = $_FILES['userfile']['tmp_name'];
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$filename = basename($_FILES['userfile']['name']);
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$filesize = intval($_FILES['userfile']['size']);
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}
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$existing_size = 0;
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if($options === 'replace') {
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$x = q("select id, hash, filesize from attach where id = %d and uid = %d limit 1",
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intval($replace),
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intval($channel_id)
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);
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if(! $x) {
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$ret['message'] = t('Cannot locate file to replace');
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return $ret;
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}
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$existing_id = $x[0]['id'];
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$existing_size = intval($x[0]['filesize']);
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$hash = $x[0]['hash'];
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}
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if($options === 'revise' || $options === 'update') {
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$sql_options = " order by revision desc ";
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if($options === 'update' && $arr && array_key_exists('revision',$arr))
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$sql_options = " and revision = " . intval($arr['revision']) . " ";
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$x =q("select id, aid, uid, hash, revision, created, edited, allow_cid, allow_gid, deny_cid, deny_gid from attach where hash = '%s' and uid = %d $sql_options limit 1",
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dbesc($arr['hash']),
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intval($channel_id)
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);
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if(! $x) {
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$ret['message'] = t('Cannot locate file to revise/update');
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return $ret;
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}
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$hash = $x[0]['hash'];
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}
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// Check storage limits
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if($options !== 'update') {
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$maxfilesize = get_config('system','maxfilesize');
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if(($maxfilesize) && ($filesize > $maxfilesize)) {
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$ret['message'] = sprintf( t('File exceeds size limit of %d'), $maxfilesize);
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@unlink($src);
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return $ret;
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}
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$limit = service_class_fetch($channel_id,'attach_upload_limit');
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if($limit !== false) {
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$r = q("select sum(filesize) as total from attach where uid = %d ",
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intval($channel_id)
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);
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if(($r) && (($r[0]['total'] + $filesize) > ($limit - $existing_size))) {
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$ret['message'] = upgrade_message(true);
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@unlink($src);
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return $ret;
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}
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}
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$mimetype = z_mime_content_type($filename);
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}
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if(! isset($hash))
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$hash = random_string();
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$created = datetime_convert();
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if($options === 'replace') {
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$r = q("update attach set filename = '%s', filetype = '%s', filesize = %d, data = '%s', edited = '%s' where id = %d and uid = %d limit 1",
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dbesc($filename),
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dbesc($mimetype),
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intval($filesize),
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dbesc(@file_get_contents($src)),
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dbesc($created),
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intval($existing_id),
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intval($channel_id)
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);
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}
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elseif($options === 'revise') {
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$r = q("insert into attach ( aid, uid, hash, filename, filetype, filesize, revision, data, created, edited, allow_cid, allow_gid, deny_cid, deny_gid )
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VALUES ( %d, %d, '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
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intval($x[0]['aid']),
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intval($channel_id),
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dbesc($x[0]['hash']),
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dbesc($filename),
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dbesc($mimetype),
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intval($filesize),
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intval($x[0]['revision'] + 1),
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dbesc(@file_get_contents($src)),
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dbesc($created),
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dbesc($created),
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dbesc($x[0]['allow_cid']),
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dbesc($x[0]['allow_gid']),
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dbesc($x[0]['deny_cid']),
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dbesc($x[0]['deny_gid'])
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);
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}
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elseif($options === 'update') {
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$r = q("update attach set filename = '%s', filetype = '%s', edited = '%s',
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allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s' where id = %d and uid = %d limit 1",
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dbesc((array_key_exists('filename',$arr)) ? $arr['filename'] : $x[0]['filename']),
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dbesc((array_key_exists('filetype',$arr)) ? $arr['filetype'] : $x[0]['filetype']),
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dbesc($created),
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dbesc((array_key_exists('allow_cid',$arr)) ? $arr['allow_cid'] : $x[0]['allow_cid']),
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dbesc((array_key_exists('allow_gid',$arr)) ? $arr['allow_gid'] : $x[0]['allow_gid']),
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dbesc((array_key_exists('deny_cid',$arr)) ? $arr['deny_cid'] : $x[0]['deny_cid']),
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dbesc((array_key_exists('deny_gid',$arr)) ? $arr['deny_gid'] : $x[0]['deny_gid']),
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intval($x[0]['id']),
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intval($x[0]['uid'])
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);
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}
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else {
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$r = q("INSERT INTO attach ( aid, uid, hash, filename, filetype, filesize, revision, data, created, edited, allow_cid, allow_gid,deny_cid, deny_gid )
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VALUES ( %d, %d, '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
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intval($channel['channel_account_id']),
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intval($channel_id),
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dbesc($hash),
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dbesc($filename),
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dbesc($mimetype),
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intval($filesize),
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intval(0),
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dbesc(@file_get_contents($src)),
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dbesc($created),
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dbesc($created),
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dbesc((array_key_exists('allow_cid',$arr)) ? $arr['allow_cid'] : '<' . $channel['channel_hash'] . '>'),
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dbesc((array_key_exists('allow_gid',$arr)) ? $arr['allow_gid'] : ''),
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dbesc((array_key_exists('deny_cid',$arr)) ? $arr['deny_cid'] : ''),
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dbesc((array_key_exists('deny_gid',$arr)) ? $arr['deny_gid'] : '')
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);
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}
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if($options !== 'update')
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@unlink($src);
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if(! $r) {
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$ret['message'] = t('File upload failed. Possible system limit or action terminated.');
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return $ret;
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}
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// Caution: This re-uses $sql_options set further above
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$r = q("select id, aid, uid, hash, filename, filetype, filesize, revision, created, edited, allow_cid, allow_gid, deny_cid, deny_gid from attach where uid = %d and hash = '%s' $sql_options limit 1",
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intval($channel_id),
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dbesc($hash)
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);
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if(! $r) {
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$ret['message'] = t('Stored file could not be verified. Upload failed.');
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return $ret;
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}
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$ret['success'] = true;
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$ret['data'] = $r[0];
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return $ret;
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}
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