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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
<?php
function database_upload($db, $parentdir, $owner, $filename, $folder, $mime, $size, $share, $filehash){
if($db->exec("
BEGIN TRANSACTION;
INSERT INTO files (id, parent, owner, name, folder, mime, size, share, hash) VALUES (NULL, " . $parentdir . ", " . $owner . ", '" . $filename . "', '" . $folder . "', '" . $mime . "', '" . $size . "', '" . $share ."', '" . $filehash . "');
COMMIT;
")){
return true;
} else {
return false;
}
}
function database_upload_update($db, $id, $name, $mime, $size, $share, $filehash){
if($db->exec("
BEGIN TRANSACTION;
UPDATE files SET name='".$name."', mime='".$mime."', size='".$size."', share='".$share."', hash='".$filehash."' WHERE id=".$id.";
COMMIT;
")){
return true;
} else {
return false;
}
}
function upload($path){
$db = $GLOBALS["db"];
set_time_limit(0);
if(!$_SESSION["login"]){
return UPLOAD_LOGIN;
}
if($_FILES["userfile"]["error"] > 0 || !$_FILES['userfile']['size'] > 0 || empty($_FILES['userfile']['size'])){
return UPLOAD_UPLOAD;
}
$parentdir = select_file_id($db, $_SESSION["userid"], $path);
$folder_owner_db = $db->query("SELECT owner FROM files WHERE id=".$parentdir.";");
$folder_owner_ar = $folder_owner_db->fetchArray(SQLITE3_NUM);
if($folder_owner_ar[0] != $_SESSION["userid"]){
return UPLOAD_FOLDER_NOT_OWNER;
}
$owner = $_SESSION["userid"];
$overall_size_db = $db->query("SELECT size FROM files WHERE owner=" . $owner . " AND size > 0;");
$overall_size = 0;
while($row = $overall_size_db->fetchArray(SQLITE3_NUM)){
$overall_size = $overall_size + $row[0];
}
if($overall_size > 2147483648){ // == 2GB
return UPLOAD_QUOTA;
}
$filename = $_FILES['userfile']['name'];
$folder = "FILE";
$mime = $_FILES['userfile']['type'];
$size = $_FILES['userfile']['size'];
if(isset($_POST["share"])){
$share = "PUBLIC";
} else {
$share = "PRIVATE";
}
$uploaddir = "../files/";
//$filehash = hash_file("md5", $uploaddir . $filename);
$filehash = hash_file("md5", $_FILES['userfile']['tmp_name']);
$exists = false;
$check_if_filename_already_exists_db = $db->query("SELECT id, name FROM files WHERE parent=".$parentdir." AND folder='FILE'");
while($row = $check_if_filename_already_exists_db->fetchArray(SQLITE3_NUM)){
if($row[1] == $filename){
$fileid = $row[0];
$exists = true;
break;
}
}
$hashtest_db = $db->query("SELECT hash FROM files WHERE hash='" . $filehash ."';");
$hashtest_ar = $hashtest_db->fetchArray(SQLITE3_NUM);
/* new file was uploaded */
if(empty($hashtest_ar[0])){
if(!move_uploaded_file($_FILES['userfile']['tmp_name'], $uploaddir . $_FILES['userfile']['name'])){
return UPLOAD_MOVING;
}
/* checks if filename exists in the same directory */
if($exists){
$delete_file_db = $db->query("SELECT hash FROM files WHERE name='".$filename."' AND parent='".$parentdir."';");
$delete_file_ar = $delete_file_db->fetchArray(SQLITE3_NUM);
if(check_if_deletable($db, $fileid, $delete_file_ar[0])){
if(!unlink($uploaddir.$delete_file_ar[0].".gz")){
return UPLOAD_FILE_HANDLING;
}
}
if(!database_upload_update($db, $fileid, $filename, $mime, $size, $share, $filehash)){
return UPLOAD_DATABASE;
}
} else {
if(!database_upload($db, $parentdir, $owner, $filename, $folder, $mime, $size, $share, $filehash)){
return UPLOAD_DATABASE;
}
}
$gzfile = $uploaddir . $filehash . ".gz";
$fp = gzopen($gzfile, 'w9');
if(!gzwrite($fp, file_get_contents($uploaddir . $filename))){
return UPLOAD_FILE_HANDLING;
}
if(!gzclose($fp)){
return UPLOAD_FILE_HANDLING;
}
if(!unlink($uploaddir . $filename)){
return UPLOAD_FILE_HANDLING;
}
return UPLOAD_SUCCESS;
/* new file already exists, only thing is a new entry in the database */
} else {
$dupl_db = $db->query("SELECT parent, mime, size, share, name FROM files WHERE hash='" . $filehash . "';");
while($row = $dupl_db->fetchArray(SQLITE3_NUM)){
if($row[0] == $parentdir){
if($mime == $row[1] && $size == $row[2] && $share == $row[3] && $filename == $row[4]){
return UPLOAD_DUPLICATE;
}
}
}
if($exists){
$delete_file_db = $db->query("SELECT hash FROM files WHERE name='".$filename."' AND parent='".$parentdir."';");
$delete_file_ar = $delete_file_db->fetchArray(SQLITE3_NUM);
if(check_if_deletable($db, $fileid, $delete_file_ar[0])){
if(!unlink($uploaddir.$delete_file_ar[0].".gz")){
return UPLOAD_FILE_HANDLING;
}
}
if(!database_upload_update($db, $fileid, $filename, $mime, $size, $share, $filehash)){
return UPLOAD_DATABASE;
}
} else {
if(!database_upload($db, $parentdir, $owner, $filename, $folder, $mime, $size, $share, $filehash)){
return UPLOAD_DATABASE;
}
}
if(!unlink($_FILES['userfile']['tmp_name'])){
return UPLOAD_FILE_HANDLING;
}
return UPLOAD_SUCCESS;
}
}
//not used atm
//function web_upload($db){
// $url = $_POST["url"];
// if(!preg_match("/^((https?|ftp)?://|www\.|ftp\.)?([-a-z0-9+&@#/%?=~_|!:,.;]+\.)+[a-z]{2}[a-z]*/i", $url)){
// echo "no hyperlink";
// return false;
// }
// if(!preg_match("/^[a-zA-Z]+://", $url){
// $url = "http://".$url;
// }
// $file = file_get_contents($url);
// if(!$file){
// echo "Couldn't download ".$url;
// return false;
// }
//}
|
