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<?php
require_once "database.php";
require_once "user.php";
class Node
{
public $node_id;
public $is_directory;
public $relative_path;
public $type;
public $code;
}
class Shared_Node
{
public $node_id;
public $code;
public $password;
public $is_public;
}
/*path is in terms of the simulated filesystem*/
/*returns NULL on error*/
function get_directory(string $abstract_path,User $user)
{
global $database;
if($abstract_path[0] != "/")
{
return NULL;
}
$component = strtok($abstract_path,"/");
$current_dir = $user->home_directory;
while($component)
{
$current_dir = $database->get_node_id($component, $current_dir);
$component = strtok("/");
}
return $current_dir;
}
/*returns an assoc arrat of Node-s*/
/*path is in terms of the simulated filesystem*/
function get_directory_contents(string $abstract_path,User $user)
{
global $database;
$dir_id=get_directory($abstract_path,$user);
if($dir_id==NULL)
return NULL;
return $database->get_links_of($dir_id,$user->user_id);
}
/*path is in terms of the simulated filesystem*/
function create_directory(string $abstract_path,string $directory_name,string $note,User $user)
{
global $database;
$parent_dir_id=get_directory($abstract_path,$user);
if($database->check_if_name_is_taken($directory_name,$parent_dir_id))
{
return NULL;
}else
{
$dir_id=$database->create_dangling_directory();
$database->link_nodes($parent_dir_id,$dir_id,$directory_name,$note);
$database->give_view_access($dir_id, $user->user_id);
$database->give_edit_access($dir_id, $user->user_id);
return $dir_id;
}
}
function unlink_from_folder(string $abstract_path,string $filename,User $user)
{
global $database;
$parent_dir_id=get_directory($abstract_path,$user);
if($parent_dir_id==$user->home_directory && ($filename=="share" || $filename=="trash"))
{
return ;
}
$database->unlink_nodes($parent_dir_id,$filename);
}
function create_share_link(string $abstract_path,string $filename,string $password,
User $user,bool $can_read,bool $can_write,$users)
{
global $database;
global $domain_name;
global $use_https;
$dir_id=get_directory($abstract_path,$user);
if($dir_id==NULL)
{
return NULL;
}
$node_id=$database->get_node_id($filename,$dir_id);
if($node_id==NULL)
{
return NULL;
}
$shared_node=$database->create_shared_node($password,$node_id,$users);
if($shared_node==NULL)
{
return NULL;
}
$usernames=explode(',',$users);
foreach($usernames as $username)
{
$usr=$database->get_user($username);
if($usr==NULL)
continue;
error_log("sharing with $usr->username");
if($can_read)
$database->give_view_access($node_id,$usr->user_id);
if($can_write)
$database->give_edit_access($node_id,$usr->user_id);
error_log("home directory is $usr->home_directory");
$share_id=$database->get_node_id("share",$usr->home_directory);
if($share_id==NULL)
{
error_log("could not find share directory for $username");
}
$database->link_nodes($share_id,$node_id,$filename,"this was shared to you");
}
if($use_https)
{
return "https://".$domain_name."/php/share.php?file=".$shared_node->code;
}else
{
return "http://".$domain_name."/php/share.php?file=".$shared_node->code;
}
}
?>
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