From 02c72e59faef6d6305bf43d7df34af70de73c02a Mon Sep 17 00:00:00 2001
From: zotlabs <mike@macgirvin.com>
Date: Sun, 9 Oct 2016 20:49:40 -0700
Subject: provide a DAV module which accesses the raw data storage for a
 channel. Together with an export data function in the API this allows a
 client process to create true backups of the cloud storage and importable
 cloud mirrors with all the metadata intact. The import function will need to
 be modified slightly to obtain the file contents from a plugin or API call;
 since it currently tries to fetch it from the source hub.

---
 Zotlabs/Module/Snap.php | 93 +++++++++++++++++++++++++++++++++++++++++++++++++
 include/api.php         | 19 ++++++++--
 2 files changed, 109 insertions(+), 3 deletions(-)
 create mode 100644 Zotlabs/Module/Snap.php

diff --git a/Zotlabs/Module/Snap.php b/Zotlabs/Module/Snap.php
new file mode 100644
index 000000000..742d88617
--- /dev/null
+++ b/Zotlabs/Module/Snap.php
@@ -0,0 +1,93 @@
+<?php
+
+namespace Zotlabs\Module;
+
+/**
+ * @brief Initialize Hubzilla's cloud (SabreDAV).
+ *
+ * Module for accessing the DAV storage area from a DAV client.
+ */
+
+use \Sabre\DAV as SDAV;
+use \Zotlabs\Storage;
+
+// composer autoloader for SabreDAV
+require_once('vendor/autoload.php');
+
+
+/**
+ * @brief Fires up the SabreDAV server.
+ *
+ * @param App &$a
+ */
+
+class Snap extends \Zotlabs\Web\Controller {
+
+	function init() {
+	
+		// workaround for HTTP-auth in CGI mode
+		if (x($_SERVER, 'REDIRECT_REMOTE_USER')) {
+ 			$userpass = base64_decode(substr($_SERVER["REDIRECT_REMOTE_USER"], 6)) ;
+			if(strlen($userpass)) {
+			 	list($name, $password) = explode(':', $userpass);
+				$_SERVER['PHP_AUTH_USER'] = $name;
+				$_SERVER['PHP_AUTH_PW'] = $password;
+			}
+		}
+
+		if (x($_SERVER, 'HTTP_AUTHORIZATION')) {
+			$userpass = base64_decode(substr($_SERVER["HTTP_AUTHORIZATION"], 6)) ;
+			if(strlen($userpass)) {
+				list($name, $password) = explode(':', $userpass);
+				$_SERVER['PHP_AUTH_USER'] = $name;
+				$_SERVER['PHP_AUTH_PW'] = $password;
+			}
+		}
+	
+		if (! is_dir('store'))
+			os_mkdir('store', STORAGE_DEFAULT_PERMISSIONS, false);
+	
+		$which = null;
+		if (argc() > 1)
+			$which = argv(1);
+	
+		$profile = 0;
+	
+		if($which)
+			profile_load( $which, $profile);
+		else
+			killme();	
+
+		$auth = new \Zotlabs\Storage\BasicAuth();
+		$auth->setRealm(ucfirst(\Zotlabs\Lib\System::get_platform_name()) . 'WebDAV');
+
+		$rootDirectory = new SDAV\FS\Directory("store");
+
+		// The server object is responsible for making sense out of the WebDAV protocol
+		$server = new SDAV\Server($rootDirectory);
+
+		$authPlugin = new \Sabre\DAV\Auth\Plugin($auth);
+		$server->addPlugin($authPlugin);
+
+		// If your server is not on your webroot, make sure the following line has the
+		// correct information
+		$server->setBaseUri('/snap');
+
+		// The lock manager is reponsible for making sure users don't overwrite
+		// each others changes.
+		$lockBackend = new SDAV\Locks\Backend\File('store/[data]/locks');
+		$lockPlugin = new SDAV\Locks\Plugin($lockBackend);
+		$server->addPlugin($lockPlugin);
+
+		// This ensures that we get a pretty index in the browser, but it is
+		// optional.
+
+//		$server->addPlugin(new SDAV\Browser\Plugin());
+
+		// All we need to do now, is to fire up the server
+		$server->exec();
+		killme();
+
+	}
+	
+}
diff --git a/include/api.php b/include/api.php
index ad8e9d572..c14b3df28 100644
--- a/include/api.php
+++ b/include/api.php
@@ -536,9 +536,6 @@ require_once('include/api_auth.php');
 	api_register_func('api/z/1.0/files','api_attach_list', true);
 
 
-
-
-
 	function api_file_meta($type) {
 		if (api_user()===false) return false;
 		if(! $_REQUEST['file_id']) return false;
@@ -601,7 +598,19 @@ require_once('include/api_auth.php');
 	api_register_func('api/red/filedata', 'api_file_data', true);
 	api_register_func('api/z/1.0/filedata', 'api_file_data', true);
 
+	function api_file_export($type) {
+		if (api_user()===false) return false;
+		if(! $_REQUEST['file_id']) return false;
+
+		$ret = attach_export_data(api_user(),$_REQUEST['file_id']);
+		if($ret) {
+			json_return_and_die($ret);
+		}
+		killme();
+	}
 
+	api_register_func('api/red/file/export', 'api_file_export', true);
+	api_register_func('api/z/1.0/file/export', 'api_file_export', true);
 
 	function api_file_detail($type) {
 		if (api_user()===false) return false;
@@ -624,6 +633,10 @@ require_once('include/api_auth.php');
 		killme();
 	}
 
+
+
+
+
 	api_register_func('api/red/file', 'api_file_detail', true);
 	api_register_func('api/z/1.0/file', 'api_file_detail', true);
 
-- 
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