Removing most of files_sharing, the Share API implemented the majority of it

1 files changed, 0 insertions, 518 deletions

diff --git a/apps/files_sharing/lib_share.php b/apps/files_sharing/lib_share.php
deleted file mode 100644
index 1c061cde07a..00000000000
--- a/apps/files_sharing/lib_share.php
+++ /dev/null
@@ -1,518 +0,0 @@
-<?php
-/**
- * ownCloud
- *
- * @author Michael Gapczynski
- * @copyright 2011 Michael Gapczynski GapczynskiM@gmail.com
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-/**
- * This class manages shared items within the database. 
- */
-class OC_Share {
-
-	const WRITE = 1;
-	const DELETE = 2;
-	const UNSHARED = -1;
-	const PUBLICLINK = "public";
-
-	private $token;
-      
-	/**
-	 * Share an item, adds an entry into the database
-	 * @param $source The source location of the item
-	 * @param $uid_shared_with The user or group to share the item with
-	 * @param $permissions The permissions, use the constants WRITE and DELETE
-	 */
-	public function __construct($source, $uid_shared_with, $permissions) {
-		$uid_owner = OCP\USER::getUser();
-		$query = OCP\DB::prepare("INSERT INTO *PREFIX*sharing VALUES(?,?,?,?,?)");
-		// Check if this is a reshare and use the original source
-		if ($result = OC_Share::getSource($source)) {
-			$source = $result;
-		}
-		if ($uid_shared_with == self::PUBLICLINK) {
-			$token = sha1("$uid_shared_with-$source");
-			OCP\Util::emitHook('OC_Share', 'public', array('source'=>$source, 'token'=>$token, 'permissions'=>$permissions));
-			$query->execute(array($uid_owner, self::PUBLICLINK, $source, $token, $permissions));
-			$this->token = $token;
-		} else {
-			if (OC_Group::groupExists($uid_shared_with)) {
-				$gid = $uid_shared_with;
-				$uid_shared_with = OC_Group::usersInGroup($gid);
-				// Remove the owner from the list of users in the group
-				$uid_shared_with = array_diff($uid_shared_with, array($uid_owner));
-			} else if (OCP\User::userExists($uid_shared_with)) {
-				$userGroups = OC_Group::getUserGroups($uid_owner);
-				// Check if the user is in one of the owner's groups
-				foreach ($userGroups as $group) {
-					if ($inGroup = OC_Group::inGroup($uid_shared_with, $group)) {
-						$gid = null;
-						$uid_shared_with = array($uid_shared_with);
-						break;
-					}
-				}
-				if (!$inGroup) {
-					throw new Exception("You can't share with ".$uid_shared_with);
-				}
-			} else {
-				throw new Exception($uid_shared_with." is not a user");
-			}
-			foreach ($uid_shared_with as $uid) {
-				// Check if this item is already shared with the user
-				$checkSource = OCP\DB::prepare("SELECT source FROM *PREFIX*sharing WHERE source = ? AND uid_shared_with ".self::getUsersAndGroups($uid, false));
-				$resultCheckSource = $checkSource->execute(array($source))->fetchAll();
-				// TODO Check if the source is inside a folder
-				if (count($resultCheckSource) > 0) {
-					if (!isset($gid)) {
-						throw new Exception("This item is already shared with ".$uid);
-					} else {
-						// Skip this user if sharing with a group
-						continue;
-					}
-				}
-				// Check if the target already exists for the user, if it does append a number to the name
-				$sharedFolder = '/'.$uid.'/files/Shared';
-				$target = $sharedFolder."/".basename($source);
-				$checkTarget = OCP\DB::prepare("SELECT source FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with ".self::getUsersAndGroups($uid, false)." LIMIT 1");
-				$result = $checkTarget->execute(array($target))->fetchAll();
-				if (count($result) > 0) {
-					if ($pos = strrpos($target, ".")) {
-						$name = substr($target, 0, $pos);
-						$ext = substr($target, $pos);
-					} else {
-						$name = $target;
-						$ext = "";
-					}
-					$counter = 1;
-					while (count($result) > 0) {
-						$target = $name."_".$counter.$ext;
-						$result = $checkTarget->execute(array($target))->fetchAll();
-						$counter++;
-					}
-				}
-				// Update mtime of shared folder to invoke a file cache rescan
-				$rootView=new OC_FilesystemView('/');
-				if (!$rootView->is_dir($sharedFolder)) {
-					if (!$rootView->is_dir('/'.$uid.'/files')) {
-						OC_Util::tearDownFS();
-						OC_Util::setupFS($uid);
-						OC_Util::tearDownFS();
-					}
-					$rootView->mkdir($sharedFolder);
-				}
-				$rootView->touch($sharedFolder);
-				if (isset($gid)) {
-					$uid = $uid."@".$gid;
-				}
-				OCP\Util::emitHook('OC_Share', 'user', array('source'=>$source, 'target'=>$target, 'with'=>$uid, 'permissions'=>$permissions));
-				$query->execute(array($uid_owner, $uid, $source, $target, $permissions));
-			}
-		}
-	}
-
-	/**
-	* Remove any duplicate or trailing '/' from the path
-	* @return A clean path
-	*/
-	private static function cleanPath($path) {
-		$path = rtrim($path, "/");
-		return preg_replace('{(/)\1+}', "/", $path);
-	}
-
-	/**
-	* Generate a string to be used for searching for uid_shared_with that handles both users and groups
-	* @param $uid (Optional) The uid to get the user groups for, a gid to get the users in a group, or if not set the current user
-	* @return An IN operator as a string
-	*/
-	private static function getUsersAndGroups($uid = null, $includePrivateLinks = true) {
-		$in = " IN(";
-		if (isset($uid) && OC_Group::groupExists($uid)) {
-			$users = OC_Group::usersInGroup($uid);
-			foreach ($users as $user) {
-				// Add a comma only if the the current element isn't the last
-				if ($user !== end($users)) {
-					$in .= "'".$user."@".$uid."', ";
-				} else {
-					$in .= "'".$user."@".$uid."'";
-				}
-			}
-		} else if (isset($uid)) {
-			// TODO Check if this is necessary, only constructor needs it as IN. It would be better for other queries to just return =$uid
-			$in .= "'".$uid."'";
-			$groups = OC_Group::getUserGroups($uid);
-			foreach ($groups as $group) {
-				$in .= ", '".$uid."@".$group."'";
-			}
-		} else {
-			$uid = OCP\USER::getUser();
-			$in .= "'".$uid."'";
-			$groups = OC_Group::getUserGroups($uid);
-			foreach ($groups as $group) {
-				$in .= ", '".$uid."@".$group."'";
-			}
-		}
-		if ($includePrivateLinks) {
-			$in .= ", '".self::PUBLICLINK."'";
-		}
-		$in .= ")";
-		return $in;
-	}
-
-	private static function updateFolder($uid_shared_with) {
-		if ($uid_shared_with != self::PUBLICLINK) {
-			if (OC_Group::groupExists($uid_shared_with)) {
-				$uid_shared_with = OC_Group::usersInGroup($uid_shared_with);
-				// Remove the owner from the list of users in the group
-				$uid_shared_with = array_diff($uid_shared_with, array(OCP\USER::getUser()));
-			} else {
-				$pos = strrpos($uid_shared_with, '@');
-				if ($pos !== false && OC_Group::groupExists(substr($uid_shared_with, $pos + 1))) {
-					$uid_shared_with = array(substr($uid_shared_with, 0, $pos));
-				} else {
-					$uid_shared_with = array($uid_shared_with);
-				}
-			}
-			foreach ($uid_shared_with as $uid) {
-				$sharedFolder = $uid.'/files/Shared';
-				// Update mtime of shared folder to invoke a file cache rescan
-				$rootView = new OC_FilesystemView('/');
-				$rootView->touch($sharedFolder);
-			}
-		}
-	}
-
-	/**
-	 * Create a new entry in the database for a file inside a shared folder
-	 *
-	 * $oldTarget and $newTarget may be the same value. $oldTarget exists in case the file is being moved outside of the folder
-	 *
-	 * @param $oldTarget The current target location
-	 * @param $newTarget The new target location
-	 */
-	public static function pullOutOfFolder($oldTarget, $newTarget) {
-		$folders = self::getParentFolders($oldTarget);
-		$source = $folders['source'].substr($oldTarget, strlen($folders['target']));
-		$item = self::getItem($folders['target']);
-		$query = OCP\DB::prepare("INSERT INTO *PREFIX*sharing VALUES(?,?,?,?,?)");
-		$query->execute(array($item[0]['uid_owner'], OCP\USER::getUser(), $source, $newTarget, $item[0]['permissions']));
-	}
-
-	/**
-	 * Get the item with the specified target location
-	 * @param $target The target location of the item
-	 * @return An array with the item
-	 */
-	public static function getItem($target) {
-		$target = self::cleanPath($target);
-		$query = OCP\DB::prepare("SELECT uid_owner, source, permissions FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with = ? LIMIT 1");
-		return $query->execute(array($target, OCP\USER::getUser()))->fetchAll();
-	}
-
-	 /**
-	 * Get the item with the specified source location
-	 * @param $source The source location of the item
-	 * @return An array with the users and permissions the item is shared with
-	 */
-	public static function getMySharedItem($source) {
-		$source = self::cleanPath($source);
-		$query = OCP\DB::prepare("SELECT uid_shared_with, permissions FROM *PREFIX*sharing WHERE source = ? AND uid_owner = ?");
-		$result = $query->execute(array($source, OCP\USER::getUser()))->fetchAll();
-		if (count($result) > 0) {
-			return $result;
-		} else if ($originalSource = self::getSource($source)) {
-			return $query->execute(array($originalSource, OCP\USER::getUser()))->fetchAll();
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Get all items the current user is sharing
-	 * @return An array with all items the user is sharing
-	 */
-	public static function getMySharedItems() {
-		$query = OCP\DB::prepare("SELECT uid_shared_with, source, permissions FROM *PREFIX*sharing WHERE uid_owner = ?");
-		return $query->execute(array(OCP\USER::getUser()))->fetchAll();
-	}
-
-	/**
-	 * Get the items within a shared folder that have their own entry for the purpose of name, location, or permissions that differ from the folder itself
-	 *
-	 * Works for both target and source folders. Can be used for getting all items shared with you e.g. pass '/MTGap/files'
-	 *
-	 * @param $folder The folder of the items to look for
-	 * @return An array with all items in the database that are in the folder
-	 */
-	public static function getItemsInFolder($folder) {
-		$folder = self::cleanPath($folder);
-		// Append '/' in order to filter out the folder itself if not already there
-		if (substr($folder, -1) !== "/") {
-			$folder .= "/";
-		}
-		$length = strlen($folder);
-		$query = OCP\DB::prepare("SELECT uid_owner, source, target, permissions FROM *PREFIX*sharing WHERE SUBSTR(source, 1, ?) = ? OR SUBSTR(target, 1, ?) = ? AND uid_shared_with ".self::getUsersAndGroups());
-		return $query->execute(array($length, $folder, $length, $folder))->fetchAll();
-	}
-
-	/**
-	 * Get the source and target parent folders of the specified target location
-	 * @param $target The target location of the item
-	 * @return An array with the keys 'source' and 'target' with the values of the source and target parent folders
-	 */
-	public static function getParentFolders($target) {
-		$target = self::cleanPath($target);
-		$query = OCP\DB::prepare("SELECT source FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with".self::getUsersAndGroups()." LIMIT 1");
-		// Prevent searching for user directory e.g. '/MTGap/files'
-		$userDirectory = substr($target, 0, strpos($target, "files") + 5);
-		$target = dirname($target);
-		$result = array();
-		while ($target != "" && $target != "/" && $target != "." && $target != $userDirectory && $target != "\\") {
-			// Check if the parent directory of this target location is shared
-			$result = $query->execute(array($target))->fetchAll();
-			if (count($result) > 0) {
-				break;
-			}
-			$target = dirname($target);
-		}
-		if (count($result) > 0) {
-			// Return both the source folder and the target folder
-			return array("source" => $result[0]['source'], "target" => $target);
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Get the source location of the item at the specified target location
-	 * @param $target The target location of the item
-	 * @return Source location or false if target location is not valid
-	 */
-	public static function getSource($target) {
-		$target = self::cleanPath($target);
-		$query = OCP\DB::prepare("SELECT source FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with ".self::getUsersAndGroups()." LIMIT 1");
-		$result = $query->execute(array($target))->fetchAll();
-		if (count($result) > 0) {
-			return $result[0]['source'];
-		} else {
-			$folders = self::getParentFolders($target);
-			if ($folders == true) {
-				return $folders['source'].substr($target, strlen($folders['target']));
-			} else {
-				return false;
-			}
-		}
-	}
-
-	public static function getTarget($source) {
-		$source = self::cleanPath($source);
-		$query = OCP\DB::prepare("SELECT target FROM *PREFIX*sharing WHERE source = ? AND uid_owner = ? LIMIT 1");
-		$result = $query->execute(array($source, OCP\USER::getUser()))->fetchAll();
-		if (count($result) > 0) {
-			return $result[0]['target'];
-		} else {
-			// TODO Check in folders
-			return false;
-		}
-	}
-
-	/**
-	 * Get the user's permissions for the item at the specified target location
-	 * @param $target The target location of the item
-	 * @return The permissions, use bitwise operators to check against the constants WRITE and DELETE
-	 */
-	public static function getPermissions($target) {
-		$target = self::cleanPath($target);
-		$query = OCP\DB::prepare("SELECT permissions FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with ".self::getUsersAndGroups()." LIMIT 1");
-		$result = $query->execute(array($target))->fetchAll();
-		if (count($result) > 0) {
-			return $result[0]['permissions'];
-		} else {
-			$folders = self::getParentFolders($target);
-			if ($folders == true) {
-				$result = $query->execute(array($folders['target']))->fetchAll();
-				if (count($result) > 0) {
-					return $result[0]['permissions'];
-				}
-			} else {
-				OCP\Util::writeLog('files_sharing',"Not existing parent folder : ".$target,OCP\Util::ERROR);
-				return false;
-			}
-		}
-	}
-
-	/**
-	 * Get the token for a public link
-	 * @return The token of the public link, a sha1 hash
-	 */
-	public function getToken() {
-		return $this->token;
-	}
-
-	/**
-	 * Get the token for a public link
-	 * @param $source The source location of the item
-	 * @return The token of the public link, a sha1 hash
-	 */
-	public static function getTokenFromSource($source) {
-		$query = OCP\DB::prepare("SELECT target FROM *PREFIX*sharing WHERE source = ? AND uid_shared_with = ? AND uid_owner = ? LIMIT 1");
-		$result = $query->execute(array($source, self::PUBLICLINK, OCP\USER::getUser()))->fetchAll();
-		if (count($result) > 0) {
-			return $result[0]['target'];
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Set the target location to a new value
-	 *
-	 * You must use the pullOutOfFolder() function to change the target location of a file inside a shared folder if the target location differs from the folder
-	 *
-	 * @param $oldTarget The current target location
-	 * @param $newTarget The new target location 
-	 */
-	public static function setTarget($oldTarget, $newTarget) {
-		$oldTarget = self::cleanPath($oldTarget);
-		$newTarget = self::cleanPath($newTarget);
-		$query = OCP\DB::prepare("UPDATE *PREFIX*sharing SET target = REPLACE(target, ?, ?) WHERE uid_shared_with ".self::getUsersAndGroups());
-		$query->execute(array($oldTarget, $newTarget));
-	}
-
-	/**
-	* Change the permissions for the specified item and user
-	*
-	* You must construct a new shared item to change the permissions of a file inside a shared folder if the permissions differ from the folder
-	*
-	* @param $source The source location of the item
-	* @param $uid_shared_with The user to change the permissions for
-	* @param $permissions The permissions, use the constants WRITE and DELETE
-	*/
-	public static function setPermissions($source, $uid_shared_with, $permissions) {
-		$source = self::cleanPath($source);
-		$query = OCP\DB::prepare("UPDATE *PREFIX*sharing SET permissions = ? WHERE SUBSTR(source, 1, ?) = ? AND uid_owner = ? AND uid_shared_with ".self::getUsersAndGroups($uid_shared_with));
-		$query->execute(array($permissions, strlen($source), $source, OCP\USER::getUser()));
-	}
-
-	/**
-	* Unshare the item, removes it from all specified users
-	*
-	* You must use the pullOutOfFolder() function to unshare a file inside a shared folder and set $newTarget to nothing
-	*
-	* @param $source The source location of the item
-	* @param $uid_shared_with Array of users to unshare the item from
-	*/
-	public static function unshare($source, $uid_shared_with) {
-		$source = self::cleanPath($source);
-		$uid_owner = OCP\USER::getUser();
-		$query = OCP\DB::prepare("DELETE FROM *PREFIX*sharing WHERE SUBSTR(source, 1, ?) = ? AND uid_owner = ? AND uid_shared_with ".self::getUsersAndGroups($uid_shared_with, false));
-		$query->execute(array(strlen($source), $source, $uid_owner));
-		self::updateFolder($uid_shared_with);
-	}
-
-	/**
-	* Unshare the item from the current user, removes it only from the database and doesn't touch the source file
-	*
-	* You must use the pullOutOfFolder() function before you call unshareFromMySelf() and set the delete parameter to false to unshare from self a file inside a shared folder
-	*
-	* @param $target The target location of the item
-	* @param $delete (Optional) If true delete the entry from the database, if false the permission is set to UNSHARED
-	*/
-	public static function unshareFromMySelf($target, $delete = true) {
-		$target = self::cleanPath($target);
-		if ($delete) {
-			$query = OCP\DB::prepare("DELETE FROM *PREFIX*sharing WHERE SUBSTR(target, 1, ?) = ? AND uid_shared_with ".self::getUsersAndGroups());
-			$query->execute(array(strlen($target), $target));
-		} else {
-			$query = OCP\DB::prepare("UPDATE *PREFIX*sharing SET permissions = ? WHERE SUBSTR(target, 1, ?) = ? AND uid_shared_with ".self::getUsersAndGroups());
-			$query->execute(array(self::UNSHARED, strlen($target), $target));
-		}
-	}
-
-	/**
-	* Remove the item from the database, the owner deleted the file
-	* @param $arguments Array of arguments passed from OC_Hook
-	*/
-	public static function deleteItem($arguments) {
-		$source = "/".OCP\USER::getUser()."/files".self::cleanPath($arguments['path']);
-		$result = self::getMySharedItem($source);
-		if (is_array($result)) {
-			foreach ($result as $item) {
-				self::updateFolder($item['uid_shared_with']);
-			}
-		}
-		$query = OCP\DB::prepare("DELETE FROM *PREFIX*sharing WHERE SUBSTR(source, 1, ?) = ? AND uid_owner = ?");
-		$query->execute(array(strlen($source), $source, OCP\USER::getUser()));
-	}
-
-	/**
-	* Rename the item in the database, the owner renamed the file
-	* @param $arguments Array of arguments passed from OC_Hook
-	*/
-	public static function renameItem($arguments) {
-		$oldSource = "/".OCP\USER::getUser()."/files".self::cleanPath($arguments['oldpath']);
-		$newSource = "/".OCP\USER::getUser()."/files".self::cleanPath($arguments['newpath']);
-		$query = OCP\DB::prepare("UPDATE *PREFIX*sharing SET source = REPLACE(source, ?, ?) WHERE uid_owner = ?");
-		$query->execute(array($oldSource, $newSource, OCP\USER::getUser()));
-	}
-
-	public static function updateItem($arguments) {
-		$source = "/".OCP\USER::getUser()."/files".self::cleanPath($arguments['path']);
-		$result = self::getMySharedItem($source);
-		if (is_array($result)) {
-			foreach ($result as $item) {
-				self::updateFolder($item['uid_shared_with']);
-			}
-		}
-	}
-
-	public static function removeUser($arguments) {
-		$query = OCP\DB::prepare("SELECT uid_shared_with FROM *PREFIX*sharing WHERE uid_owner = ?");
-		$result = $query->execute(array($arguments['uid']))->fetchAll();
-		if (is_array($result)) {
-			$result = array_unique($result);
-			foreach ($result as $item) {
-				self::updateFolder($item['uid_shared_with']);
-			}
-			$query = OCP\DB::prepare('DELETE FROM *PREFIX*sharing WHERE uid_owner = ? OR uid_shared_with '.self::getUsersAndGroups($arguments['uid']));
-			$query->execute(array($arguments['uid']));
-		}
-	}
-
-	public static function addToGroupShare($arguments) {
-		$length = -strlen($arguments['gid']) - 1;
-		$query = OCP\DB::prepare('SELECT uid_owner, source, permissions FROM *PREFIX*sharing WHERE SUBSTR(uid_shared_with, '.$length.') = ?');
-		$gid = '@'.$arguments['gid'];
-		$result = $query->execute(array($gid))->fetchAll();
-		if (count($result) > 0) {
-			$lastSource = '';
-			for ($i = 0; $i < count($result); $i++) {
-				if ($result[$i]['source'] != $lastSource) {
-					new OC_Share($result[$i]['source'], $arguments['gid'], $result[$i]['permissions']);
-					$lastSource = $result[$i]['source'];
-				}
-			}
-		}
-	}
-
-	public static function removeFromGroupShare($arguments) {
-		$query = OCP\DB::prepare('DELETE FROM *PREFIX*sharing WHERE uid_shared_with = ?');
-		$query->execute(array($arguments['uid'].'@'.$arguments['gid']));
-		self::updateFolder($arguments['uid']);
-	}
-
-}