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Merge pull request #35 from jclariviere/whitelist

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Add a whitelist mode, should work?
This commit is contained in:
Eric Johansson (neku) 2018-03-16 16:21:05 +01:00 committed by GitHub
commit 4e4aef01ce
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2 changed files with 26 additions and 18 deletions
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8
includes/config.template.php
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@ -15,7 +15,11 @@ define("CONFIG_MAX_RETENTION_TIME", "60");
define("CONFIG_MAX_RETENTION_TEXT", "1 hour");
//Length of the random chain appended to the filename
define("CONFIG_RANDOM_LENGTH", "12");
//This is the list of blocked extensions, you can remove extensions or add to this list as you like
define ("CONFIG_BLOCKED_EXTENSIONS", serialize(array("exe", "scr", "rar", "zip", "com", "vbs", "bat", "cmd", "html", "htm", "msi", "php", "php5")));
//Operate on a BLACKLIST or a WHITELIST when blocking file extensions
define("CONFIG_EXTENSION_BLOCKING_MODE", "BLACKLIST");
//This is the list of blocked extensions in BLACKLIST mode (default mode), you can remove extensions or add to this list as you like
define("CONFIG_BLOCKED_EXTENSIONS", serialize(array("exe", "scr", "rar", "zip", "com", "vbs", "bat", "cmd", "html", "htm", "msi", "php", "php5")));
//This is the list of allowed extensions in WHITELIST mode, you can remove extensions or add to this list as you like
define("CONFIG_ALLOWED_EXTENSIONS", serialize(array("txt", "pdf")));
//https://wiki.gentoo.org/wiki/Handbook to set this string correctly, or just ignore it
define("VERYLO_NG_STRING_THATDOESNTREALLYD_O_ANYTHING", "ok");

36
includes/core.php
View File

@ -9,14 +9,7 @@ function save_file ($file, $name, $arg, $type){
case 'random':
$ext = pathinfo($file.$name, PATHINFO_EXTENSION);
$ext = strtolower($ext);
if(in_array($ext, unserialize(CONFIG_BLOCKED_EXTENSIONS))){
if($type==='normal'){
include_once(CONFIG_ROOT_PATH.'error_meow.php');
exit(0);
}else{
exit('File type not allowed.');
}
}
verify_extension($ext, $type);
$file_name = gen_name('random', $ext);
while(file_exists(CONFIG_FILES_PATH.$file_name)){
$file_name = gen_name('random', $ext);
@ -28,14 +21,7 @@ function save_file ($file, $name, $arg, $type){
$file_name = gen_name('custom_original', $name);
$ext = pathinfo($file_name, PATHINFO_EXTENSION);
$ext = strtolower($ext);
if(in_array($ext, unserialize(CONFIG_BLOCKED_EXTENSIONS))){
if($type==='normal'){
include_once(CONFIG_ROOT_PATH.'error_meow.php');
exit(0);
}else{
exit('File type not allowed.');
}
}
verify_extension($ext, $type);
while(file_exists(CONFIG_FILES_PATH.$file_name)){
$file_name = gen_name('custom_original', $name);
}
@ -76,3 +62,21 @@ function gen_name($arg, $in){
break;
}
}
//Verify that the extension is allowed
function verify_extension($ext, $type){
if(CONFIG_EXTENSION_BLOCKING_MODE === "WHITELIST") {
$allowed = in_array($ext, unserialize(CONFIG_ALLOWED_EXTENSIONS));
}else{
$allowed = !in_array($ext, unserialize(CONFIG_BLOCKED_EXTENSIONS));
}
if(!$allowed){
if($type==='normal'){
include_once(CONFIG_ROOT_PATH.'error_meow.php');
exit(0);
}else{
exit('File type not allowed.');
}
}
}