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provide a generic hook thing instead of the clamav specific thing

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This commit is contained in:
Rouji 2021-01-30 19:15:59 +01:00
parent 547e13d591
commit 8ff340afc9
1 changed files with 15 additions and 19 deletions
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28
index.php
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@ -10,8 +10,8 @@ $STORE_PATH="files/"; //directory to store uploaded files in
$LOG_PATH=null; //path to log uploads + resulting links to
$DOWNLOAD_PATH="%s"; //the path part of the download url. %s = placeholder for filename
$HTTP_PROTO="https"; //protocol to use in links
$CLAM_SCAN=false; //scan files using clamd
$MAX_EXT_LEN=7; //max. length for file extensions
$EXTETNAL_HOOK=null;
$ADMIN_EMAIL="admin@example.com"; //address for inquiries
@ -51,17 +51,6 @@ function warn_config_value($ini_name, $var_name, $var_val)
$var_val);
}
// runs a file through clamdscan
// fails silently(!) if clamd is not running or something
function clam($path)
{
$cmd = 'clamdscan --quiet ' . escapeshellarg($path);
$out = '';
$ret = -1;
exec($cmd, $out, $ret);
return $ret != 1;
}
//extract extension from a path (does not include the dot)
function get_ext($path)
{
@ -92,7 +81,7 @@ function store_file($name, $tmpfile, $formatted = false)
global $HTTP_PROTO;
global $DOWNLOAD_PATH;
global $MAX_FILESIZE;
global $CLAM_SCAN;
global $EXTETNAL_HOOK;
global $LOG_PATH;
//create folder, if it doesn't exist
@ -134,14 +123,21 @@ function store_file($name, $tmpfile, $formatted = false)
$res = move_uploaded_file($tmpfile, $target_file);
if ($res)
{
//scan file using clam
if ($CLAM_SCAN && !clam($target_file))
if ($EXTETNAL_HOOK !== null)
{
putenv("REMOTE_ADDR=".$_SERVER['REMOTE_ADDR']);
putenv("ORIGINAL_NAME=".$name);
putenv("STORED_FILE=".$target_file);
$ret = -1;
$out = exec($EXTETNAL_HOOK, $_ = null, $ret);
if ($out !== false && $ret !== 0)
{
unlink($target_file);
header("HTTP/1.0 400 Bad Request");
print("Error 400: File rejected by malware scan");
print("Error: ".$out);
return;
}
}
//print the download link of the file
$url = sprintf('%s://%s/'.$DOWNLOAD_PATH,