1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
<?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);
}
/*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;
}
}
?>
|