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https://github.com/Rouji/single_php_filehost.git
synced 2025-04-04 16:39:34 +00:00
encapsulate config stuff in a class
...mostly just a cheapo globally accessible namespace tbh
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Rouji
parent
3b8a6457c5
commit
51ba3a429f
157
index.php
157
index.php
@ -1,35 +1,37 @@
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<?php
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$MAX_FILESIZE=512; //max. filesize in MiB
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$MAX_FILEAGE=180; //max. age of files in days
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$MIN_FILEAGE=31; //min. age of files in days
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$DECAY_EXP=2; //high values penalise larger files more
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$UPLOAD_TIMEOUT=5*60; //max. time an upload can take before it times out
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$ID_LENGTH=3; //length of the random file ID
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$STORE_PATH="files/"; //directory to store uploaded files in
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$LOG_PATH=null; //path to log uploads + resulting links to
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$DOWNLOAD_PATH="%s"; //the path part of the download url. %s = placeholder for filename
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$SITE_URL=site_url();
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$MAX_EXT_LEN=7; //max. length for file extensions
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$EXTERNAL_HOOK=null;
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$AUTO_FILE_EXT=false;
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$ADMIN_EMAIL="admin@example.com"; //address for inquiries
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function site_url()
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class CONFIG
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{
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if (isset($_SERVER['HTTP_HOST']))
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const MAX_FILESIZE=512; //max. filesize in MiB
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const MAX_FILEAGE=180; //max. age of files in days
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const MIN_FILEAGE=31; //min. age of files in days
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const DECAY_EXP=2; //high values penalise larger files more
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const UPLOAD_TIMEOUT=5*60; //max. time an upload can take before it times out
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const ID_LENGTH=3; //length of the random file ID
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const STORE_PATH="files/"; //directory to store uploaded files in
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const LOG_PATH=null; //path to log uploads + resulting links to
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const DOWNLOAD_PATH="%s"; //the path part of the download url. %s = placeholder for filename
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const MAX_EXT_LEN=7; //max. length for file extensions
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const EXTERNAL_HOOK=null;
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const AUTO_FILE_EXT=false;
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const ADMIN_EMAIL="admin@example.com"; //address for inquiries
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public static function SITE_URL()
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{
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$url = 'http';
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if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off')
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if (isset($_SERVER['HTTP_HOST']))
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{
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$url .= 's';
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$url = 'http';
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if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off')
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{
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$url .= 's';
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}
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$url .= '://' . $_SERVER['HTTP_HOST'] . '/';
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return $url;
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}
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$url .= '://' . $_SERVER['HTTP_HOST'] . '/';
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return $url;
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}
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}
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};
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// generate a random string of characters with given length
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function rnd_str($len)
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@ -47,9 +49,6 @@ function rnd_str($len)
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// check php.ini settings and print warnings if anything's not configured properly
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function check_config()
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{
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global $MAX_FILESIZE;
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global $UPLOAD_TIMEOUT;
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$warn_config_value = function($ini_name, $var_name, $var_val)
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{
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$ini_val = intval(ini_get($ini_name));
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@ -58,10 +57,10 @@ function check_config()
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$ini_name, $ini_val, $var_name, $var_val);
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};
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$warn_config_value('upload_max_filesize', "MAX_FILESIZE", $MAX_FILESIZE);
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$warn_config_value('post_max_size', "MAX_FILESIZE", $MAX_FILESIZE);
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$warn_config_value('max_input_time', "UPLOAD_TIMEOUT", $UPLOAD_TIMEOUT);
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$warn_config_value('max_execution_time', "UPLOAD_TIMEOUT", $UPLOAD_TIMEOUT);
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$warn_config_value('upload_max_filesize', "MAX_FILESIZE", CONFIG::MAX_FILESIZE);
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$warn_config_value('post_max_size', "MAX_FILESIZE", CONFIG::MAX_FILESIZE);
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$warn_config_value('max_input_time', "UPLOAD_TIMEOUT", CONFIG::UPLOAD_TIMEOUT);
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$warn_config_value('max_execution_time', "UPLOAD_TIMEOUT", CONFIG::UPLOAD_TIMEOUT);
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}
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//extract extension from a path (does not include the dot)
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@ -107,28 +106,18 @@ function ext_by_finfo($path)
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// $formatted: set to true to display formatted message instead of bare link
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function store_file($name, $tmpfile, $formatted = false)
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{
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global $STORE_PATH;
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global $ID_LENGTH;
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global $SITE_URL;
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global $DOWNLOAD_PATH;
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global $MAX_FILESIZE;
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global $EXTERNAL_HOOK;
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global $LOG_PATH;
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global $MAX_EXT_LEN;
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global $AUTO_FILE_EXT;
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//create folder, if it doesn't exist
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if (!file_exists($STORE_PATH))
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if (!file_exists(CONFIG::STORE_PATH))
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{
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mkdir($STORE_PATH, 0750, true); //TODO: error handling
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mkdir(CONFIG::STORE_PATH, 0750, true); //TODO: error handling
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}
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//check file size
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$size = filesize($tmpfile);
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if ($size > $MAX_FILESIZE * 1024 * 1024)
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if ($size > CONFIG::MAX_FILESIZE * 1024 * 1024)
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{
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header("HTTP/1.0 413 Payload Too Large");
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printf("Error 413: Max File Size (%d MiB) Exceeded\n", $MAX_FILESIZE);
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printf("Error 413: Max File Size (%d MiB) Exceeded\n", CONFIG::MAX_FILESIZE);
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return;
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}
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if ($size == 0)
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@ -139,19 +128,19 @@ function store_file($name, $tmpfile, $formatted = false)
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}
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$ext = ext_by_path($name);
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if (empty($ext) && $AUTO_FILE_EXT)
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if (empty($ext) && CONFIG::AUTO_FILE_EXT)
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{
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$ext = ext_by_finfo($tmpfile);
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}
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$ext = substr($ext, 0, $MAX_EXT_LEN);
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$ext = substr($ext, 0, CONFIG::MAX_EXT_LEN);
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$tries_per_len=3; //try random names a few times before upping the length
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for ($len = $ID_LENGTH; ; ++$len)
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for ($len = CONFIG::ID_LENGTH; ; ++$len)
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{
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for ($n=0; $n<=$tries_per_len; ++$n)
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{
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$id = rnd_str($len);
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$basename = $id . (empty($ext) ? '' : '.' . $ext);
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$target_file = $STORE_PATH . $basename;
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$target_file = CONFIG::STORE_PATH . $basename;
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if (!file_exists($target_file))
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break 2;
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@ -166,13 +155,13 @@ function store_file($name, $tmpfile, $formatted = false)
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return;
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}
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if ($EXTERNAL_HOOK !== null)
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if (CONFIG::EXTERNAL_HOOK !== null)
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{
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putenv("REMOTE_ADDR=".$_SERVER['REMOTE_ADDR']);
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putenv("ORIGINAL_NAME=".$name);
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putenv("STORED_FILE=".$target_file);
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$ret = -1;
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$out = exec($EXTERNAL_HOOK, $_ = null, $ret);
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$out = exec(CONFIG::EXTERNAL_HOOK, $_ = null, $ret);
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if ($out !== false && $ret !== 0)
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{
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unlink($target_file);
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@ -183,7 +172,7 @@ function store_file($name, $tmpfile, $formatted = false)
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}
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//print the download link of the file
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$url = sprintf($SITE_URL.$DOWNLOAD_PATH, $basename);
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$url = sprintf(CONFIG::SITE_URL().CONFIG::DOWNLOAD_PATH, $basename);
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if ($formatted)
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{
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@ -195,10 +184,10 @@ function store_file($name, $tmpfile, $formatted = false)
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}
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// log uploader's IP, original filename, etc.
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if ($LOG_PATH)
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if (CONFIG::LOG_PATH)
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{
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file_put_contents(
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$LOG_PATH,
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CONFIG::LOG_PATH,
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implode("\t", array(
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date('c'),
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$_SERVER['REMOTE_ADDR'],
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@ -214,17 +203,11 @@ function store_file($name, $tmpfile, $formatted = false)
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// purge all files older than their retention period allows.
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function purge_files()
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{
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global $STORE_PATH;
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global $MAX_FILEAGE;
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global $MAX_FILESIZE;
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global $MIN_FILEAGE;
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global $DECAY_EXP;
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$num_del = 0; //number of deleted files
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$total_size = 0; //total size of deleted files
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//for each stored file
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foreach (scandir($STORE_PATH) as $file)
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foreach (scandir(CONFIG::STORE_PATH) as $file)
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{
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//skip virtual . and .. files
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if ($file === '.' ||
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@ -233,21 +216,21 @@ function purge_files()
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continue;
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}
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$file = $STORE_PATH . $file;
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$file = CONFIG::STORE_PATH . $file;
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$file_size = filesize($file) / (1024*1024); //size in MiB
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$file_age = (time()-filemtime($file)) / (60*60*24); //age in days
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//keep all files below the min age
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if ($file_age < $MIN_FILEAGE)
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if ($file_age < CONFIG::MIN_FILEAGE)
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{
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continue;
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}
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//calculate the maximum age in days for this file
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$file_max_age = $MIN_FILEAGE +
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($MAX_FILEAGE - $MIN_FILEAGE) *
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pow(1-($file_size/$MAX_FILESIZE),$DECAY_EXP);
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$file_max_age = CONFIG::MIN_FILEAGE +
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(CONFIG::MAX_FILEAGE - CONFIG::MIN_FILEAGE) *
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pow(1 - ($file_size / CONFIG::MAX_FILESIZE), CONFIG::DECAY_EXP);
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//delete if older
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if ($file_age > $file_max_age)
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@ -265,15 +248,15 @@ function purge_files()
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// send a ShareX custom uploader config as .json
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function send_sharex_config()
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{
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global $SITE_URL;
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$host = $_SERVER["HTTP_HOST"];
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$site_url = CONFIG::SITE_URL();
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$filename = $host.".sxcu";
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$content = <<<EOT
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{
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"Name": "$host",
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"DestinationType": "ImageUploader, FileUploader",
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"RequestType": "POST",
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"RequestURL": "$SITE_URL",
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"RequestURL": "$site_url",
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"FileFormName": "file",
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"ResponseType": "Text"
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}
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@ -287,14 +270,14 @@ EOT;
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// send a Hupl uploader config as .hupl (which is just JSON)
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function send_hupl_config()
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{
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global $SITE_URL;
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$host = $_SERVER["HTTP_HOST"];
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$site_url = CONFIG::SITE_URL();
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$filename = $host.".hupl";
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$content = <<<EOT
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{
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"name": "$host",
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"type": "http",
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"targetUrl": "$SITE_URL",
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"targetUrl": "$site_url",
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"fileParam": "file"
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}
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EOT;
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@ -308,15 +291,15 @@ EOT;
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// use it, how to upload, etc.
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function print_index()
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{
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global $ADMIN_EMAIL;
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global $SITE_URL;
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global $MAX_FILEAGE;
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global $MAX_FILESIZE;
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global $MIN_FILEAGE;
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global $DECAY_EXP;
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$site_url = CONFIG::SITE_URL();
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$sharex_url = $site_url."?sharex";
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$hupl_url = $site_url."?hupl";
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$decay = CONFIG::DECAY_EXP;
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$min_age = CONFIG::MIN_FILEAGE;
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$max_size = CONFIG::MAX_FILESIZE;
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$max_age = CONFIG::MAX_FILEAGE;
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$mail = CONFIG::ADMIN_EMAIL;
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$sharex_url = $SITE_URL."?sharex";
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$hupl_url = $SITE_URL."?hupl";
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echo <<<EOT
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<!DOCTYPE html>
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@ -330,10 +313,10 @@ echo <<<EOT
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<pre>
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=== How To Upload ===
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You can upload files to this site via a simple HTTP POST, e.g. using curl:
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curl -F "file=@/path/to/your/file.jpg" $SITE_URL
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curl -F "file=@/path/to/your/file.jpg" $site_url
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Or if you want to pipe to curl *and* have a file extension, add a "filename":
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echo "hello" | curl -F "file=@-;filename=.txt" $SITE_URL
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echo "hello" | curl -F "file=@-;filename=.txt" $site_url
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On Windows, you can use <a href="https://getsharex.com/">ShareX</a> and import <a href="$sharex_url">this</a> custom uploader.
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On Android, you can use an app called <a href="https://github.com/Rouji/Hupl">Hupl</a> with <a href="$hupl_url">this</a> uploader.
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@ -352,17 +335,17 @@ selection input.)
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=== File Sizes etc. ===
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The maximum allowed file size is $MAX_FILESIZE MiB.
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The maximum allowed file size is $max_size MiB.
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Files are kept for a minimum of $MIN_FILEAGE, and a maximum of $MAX_FILEAGE Days.
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Files are kept for a minimum of $min_age, and a maximum of $max_age Days.
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How long a file is kept, depends on its size. Larger files are deleted earlier
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How long a file is kept depends on its size. Larger files are deleted earlier
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than small ones. This relation is non-linear and skewed in favour of small
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files.
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The exact formula for determining the maximum age for a file is:
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MIN_AGE + (MAX_AGE - MIN_AGE) * (1-(FILE_SIZE/MAX_SIZE))^$DECAY_EXP
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MIN_AGE + (MAX_AGE - MIN_AGE) * (1-(FILE_SIZE/MAX_SIZE))^$decay
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=== Source ===
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@ -372,7 +355,7 @@ The PHP script used to provide this service is open source and available on
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=== Contact ===
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If you want to report abuse of this service, or have any other inquiries,
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please write an email to $ADMIN_EMAIL
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please write an email to $mail
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</pre>
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</body>
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</html>
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