162 lines
3.5 KiB
PHP
162 lines
3.5 KiB
PHP
<?php
|
|
|
|
/*
|
|
* These functions handle file access.
|
|
*/
|
|
|
|
function get_share_id($ip, $saltfile, $visitfile){
|
|
$index = crypt($ip, get_salt($saltfile));
|
|
$visits = get_visits($index, $visitfile);
|
|
if($visits != null and isset($visits['ans'][$index])){
|
|
return $index.'-'.sizeof($visits['ans'][$index]);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
function get_answer_string($visitfile, $index, $subindex){
|
|
$visits = load_var($visitfile);
|
|
if($visits != null){
|
|
if(isset($visits['ans']) and isset($visits['ans'][$index]) and isset($visits['ans'][$index][$subindex-1])){
|
|
return $visits['ans'][$index][$subindex-1];
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
function add_visit($id, $file, $nocount=false, $ans=''){
|
|
$visits = get_visits($id, $file);
|
|
if($visits != null){
|
|
if($nocount){
|
|
$visits['nocount'] = $visits['nocount'] + 1;
|
|
} else {
|
|
$date = date('Ymd');
|
|
|
|
if(!isset($visits[$date][$id])){
|
|
$visits[$date][$id] = 1;
|
|
} else {
|
|
$visits[$date][$id] = $visits[$date][$id] + 1;
|
|
}
|
|
$visits['ans'][$id][] = $ans;
|
|
}
|
|
set_visits($visits, $file);
|
|
} else {
|
|
echo '<!-- ERROR konnte Besuche nicht zählen -->';
|
|
}
|
|
}
|
|
|
|
function get_visits($id, $file){
|
|
if(!file_exists($file)){
|
|
$visits[date('Ymd')][$id] = 0;
|
|
$visits['nocount'] = 0;
|
|
$visits['ans'] = Array();
|
|
return $visits;
|
|
}
|
|
if(is_readable($file)){
|
|
|
|
$handle = fopen($file, 'r');
|
|
$contents = fread($handle, filesize($file));
|
|
fclose($handle);
|
|
|
|
$visits = unserialize($contents);
|
|
return $visits;
|
|
} else {
|
|
echo "<!-- ERROR $file kann nicht gelesen werden! -->";
|
|
return null;
|
|
}
|
|
}
|
|
|
|
function set_visits($visits, $file){
|
|
if(is_writable($file) or (is_writable(dirname($file)) and !file_exists($file))){
|
|
|
|
$handle = fopen($file, 'w');
|
|
if (!fwrite($handle, serialize($visits))) {
|
|
echo "<!-- ERROR Kann in die Datei $file nicht schreiben -->";
|
|
}
|
|
fclose($handle);
|
|
|
|
} else {
|
|
echo "<!-- ERROR $file nicht beschreibbar! -->";
|
|
}
|
|
}
|
|
|
|
function get_salt($hashfile){
|
|
// a) file does not exist yet
|
|
if(!file_exists($hashfile)){
|
|
if(is_writable(dirname($hashfile))){
|
|
|
|
$hash[0] = date('Ymd');
|
|
$hash[1] = mt_rand();
|
|
|
|
$handle = fopen($hashfile, 'w');
|
|
if (!fwrite($handle, serialize($hash))) {
|
|
echo "<!-- ERROR Kann in die Datei $hashfile nicht schreiben -->";
|
|
}
|
|
fclose($handle);
|
|
|
|
} else {
|
|
echo "<!-- ERROR Kann Datei $hashfile nicht erstellen! -->";
|
|
}
|
|
}
|
|
|
|
if(is_readable($hashfile)){
|
|
|
|
$handle = fopen($hashfile, 'r');
|
|
$contents = fread($handle, filesize($hashfile));
|
|
fclose($handle);
|
|
|
|
$hash = unserialize($contents);
|
|
|
|
// b) hash is not of today
|
|
if($hash[0] != date('Ymd')){
|
|
$hash[0] = date('Ymd');
|
|
$hash[1] = mt_rand();
|
|
|
|
$handle = fopen($hashfile, 'w');
|
|
if (!fwrite($handle, serialize($hash))) {
|
|
echo "<!-- ERROR Kann in die Datei $hashfile nicht schreiben -->";
|
|
}
|
|
fclose($handle);
|
|
}
|
|
return $hash[1];
|
|
} else {
|
|
echo "<!-- ERROR $hashfile kann nicht gelesen werden! -->";
|
|
return 1;
|
|
}
|
|
|
|
}
|
|
|
|
function load_var($file){
|
|
if(!file_exists($file)){
|
|
return null;
|
|
}
|
|
if(is_readable($file)){
|
|
|
|
$handle = fopen($file, 'r');
|
|
$contents = fread($handle, filesize($file));
|
|
fclose($handle);
|
|
|
|
$var = unserialize($contents);
|
|
return $var;
|
|
} else {
|
|
echo "<!-- ERROR $file kann nicht gelesen werden! -->";
|
|
return null;
|
|
}
|
|
}
|
|
|
|
function save_var($file, $var){
|
|
if(is_writable($file) or (is_writable(dirname($file)) and !file_exists($file))){
|
|
|
|
$handle = fopen($file, 'w');
|
|
if (!fwrite($handle, serialize($var))) {
|
|
echo "<!-- ERROR Kann in die Datei $file nicht schreiben -->";
|
|
}
|
|
fclose($handle);
|
|
|
|
} else {
|
|
echo "<!-- ERROR $file nicht beschreibbar! -->";
|
|
}
|
|
}
|
|
|
|
|
|
?>
|