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conn.php
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<?php
include("config.php");
include("cookie.php");
function db_connect() {
global $db_addr, $db_user, $db_pass, $db_table;
$con = mysql_connect($db_addr,$db_user,$db_pass);
mysql_query('SET NAMES "utf8"',$con);
if (!$con) {
return false;
}
$sql = mysql_select_db($db_table,$con);
if (!$sql) return false;
}
function change_in($str){
$change = array('<'=>'<',);
$s = strtr($str,$change);
return $s;
}
function change_prob($str){
$change = array('\\'=>'\\\\','\''=>'\\\'',);
$s = strtr($str,$change);
return $s;
}
function change_out($str){
$change = array(
'<img'=>'<img',
'<a href'=>'<a href',
'<center>'=>'<center>',
'<strong>'=>'<strong>',
'</'=>'</',
' '=>' ',
'<font'=>'<font',
'\t'=>' ',
'<div>'=>'<div>',
'<div '=>'<div ',
'<p>'=>'<p>',
'<sub>'=>'<sub>',
'<sup>'=>'<sup>',
'<i>'=>'<i>',
'<b>'=>'<b>',
'<tt>'=>'<tt>',
'<ul>'=>'<ul>',
'<li>'=>'<li>',
'<td'=>'<td',
'<th'=>'<th',
'<table'=>'<table',
'<tr'=>'<tr',
'<thead'=>'<thead',
'<tbody'=>'<tbody',
'<p '=>'<p ',
'<span '=>'<span ',
'<pre '=>'<pre ',
// '<pre '=>'<pre ',
'<blockquote>'=>'<blockquote>',
'<!--'=>'<!--',
'<ol>'=>'<ol>',
'<ol '=>'<ol ',
'<nobr>'=>'<nobr>',
'<h4>'=>'<h4>',
'<sup '=>'<sup ',
'<sub '=>'<sub ',
'<colgroup '=>'<colgroup ',
// ' on*='=>''
// ' \n'=>'\r '
);
$s = strtr($str,$change);
$s=nl2br($s); return $s;
}
function change_out_nick($str,$flag=true){
$change = array(
'<tupian'=>'<img height=80px',
'<link'=>'<a target=_blank',
'<center>'=>'<center>',
'<strong>'=>'<strong>',
' '=>' ',
'<font'=>'<font',
'\t'=>' ',
'<p>'=>'<p>',
'<sub>'=>'<sub>',
'<sup>'=>'<sup>',
'<i>'=>'<i>',
'<b>'=>'<b>',
'<blockquote>'=>'<blockquote>',
'<br>'=>'<br>',
'<gundong'=>'<marquee',
'</gundong>'=>'</marquee>',
'</f'=>'</f',
'</tupian>'=>'</img>',
'</link>'=>'</a>',
'</blockquote>'=>'</blockquote>',
'</center>'=>'</center>',
' dynsrc='=>' =',
' on'=>' hello',
' oN'=>' hello',
' On'=>' hello',
' ON'=>' hello'
);
// $str=strtolower($str);
$change2 = array (
'<gundong'=>'<marquee',
'</gundong'=>'</marquee',
'</tupian>'=>'</img>',
'<tupian'=>'<img height=80px'
);
if ($flag) $s = strtr($str,$change);
else $s = strtr($str,$change2);
$s=nl2br($s); return $s;
}
function db_user_insert($row) {
$now = time();
$today=date("Y-m-d G:i:s",$now);
$row[1] = sha1(md5($row[1]));
$row[2] = change_in($row[2]);
$row[3] = change_in($row[3]);
$row[4] = change_in($row[4]);
$sql = mysql_query("insert into user (username,password,nickname,school,email,register_time) values ('$row[0]','$row[1]','$row[2]','$row[3]','$row[4]','$today')");
if (!$sql)
return false;
else
return true;
}
function db_user_exist($username) {
$result = mysql_query("select username from user where username = '$username'");
$row = @mysql_num_rows($result);
if ($row==1) return true;
else return false;
}
function db_get_unread_mail_number($username) {
$result = mysql_query("select count(*) from mail where status=false and reciever='$username'");
$row = mysql_fetch_array($result);
return $row[0];
}
function db_user_isroot($username) {
if (!db_user_exist($username)) return false;
$result = mysql_query("select isroot from user where username = '$username'");
$row = mysql_fetch_array($result);
if ($row[0]==1) return true;
else return false;
}
function db_user_iscodeviewer($username) {
if (!db_user_exist($username)) return false;
if (db_user_isroot($username)) return true;
$result = mysql_query("select isroot from user where username = '$username'");
$row = mysql_fetch_array($result);
if ($row[0]==2) return true;
else return false;
}
function db_user_match($user, $password) {
//if ($user==""||$password="") return false;
$result = mysql_query("select * from user where username = '$user' and password='$password'");
$row = @mysql_num_rows($result);
if ($row == 1) return true;
else return false;
}
function db_mail_user_match($user,$mailid) {
$res=mysql_query("select count(*) from mail where mailid='$mailid' and reciever='$user'");
list($rec)=mysql_fetch_array($res);
if ($rec) return true;
else return false;
}
function db_change_last_login_time($name) {
$now = time();
$today=date("Y-m-d G:i:s",$now);
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
if($ip=="") $ip = $_SERVER['REMOTE_ADDR'];
//$ip=getenv('REMOTE_ADDR');
mysql_query("update user set last_login_time='$today', ipaddr='$ip' where username='$name' ");
}
function db_insert_submit_time($runid) {
$now = time();
$today=date("Y-m-d G:i:s",$now);
mysql_query("update status set time_submit='$today' where runid=$runid ");
}
function db_contest_exist($cid) {
$result = mysql_query("select * from contest where cid = $cid");
$row = @mysql_num_rows($result);
if ($row==1) return true;
else return false;
}
function db_contest_private($cid) {
$result = mysql_query("select isprivate from contest where cid = $cid");
$row = mysql_fetch_row($result);
if ($row[0]==1||$row[0]==2) return true;
else return false;
}
function db_user_in_contest($cid,$user) {
$result = mysql_query("select * from contest_user where cid = '$cid' and username='$user'");
$row = mysql_num_rows($result);
if ($row>=1) return true;
else return false;
}
function db_lable_in_contest($cid,$lable) {
$result = mysql_query("select * from contest_problem where cid = '$cid' and lable='$lable'");
$row = mysql_num_rows($result);
if ($row==1) return true;
else return false;
}
function db_contest_running($cid) {
if (!db_contest_exist($cid)) return false;
$nowtime=time();
$result = mysql_query("select unix_timestamp(start_time),unix_timestamp(end_time) from contest where cid = '$cid'");
$row = mysql_fetch_row($result);
if ($nowtime>=$row[0]&&$nowtime<=$row[1]) return true;
else return false;
}
function db_contest_started($cid) {
if (!db_contest_exist($cid)) return false;
$nowtime=time();
$result = mysql_query("select unix_timestamp(start_time) from contest where cid = '$cid'");
$row = mysql_fetch_row($result);
if ($nowtime>=$row[0]) return true;
else return false;
}
function db_contest_passed($cid) {
if (!db_contest_exist($cid)) return false;
$nowtime=time();
$result = mysql_query("select unix_timestamp(end_time) from contest where cid = '$cid'");
$row = mysql_fetch_row($result);
if ($nowtime>=$row[0]) return true;
else return false;
}
function db_contest_user_has($cid,$username) {
$result = mysql_query("select * from contest_user where username = '$username' and cid='$cid'");
$row = @mysql_num_rows($result);
if ($row==1) return true;
else return false;
}
function db_problem_hide($pid) {
$result = mysql_query("select hide from problem where pid = '$pid'");
$row = mysql_fetch_row($result);
if ($row[0]=='0') return false;
else return true;
}
function db_problem_exist($pid) {
$result = mysql_query("select * from problem where pid = '$pid'");
if (mysql_num_rows($result)==0) return false;
else return true;
}
function db_problem_isvirtual($pid) {
list($result) = mysql_fetch_array(mysql_query("select isvirtual from problem where pid='$pid'"));
return $result;
}
function sc ($ta,$tb) {
$diff = $ta-$tb;
if($diff <0){
$diff = -$diff;
}
$diff_hour = (int)($diff/3600);
$diff_minute = (int)(($diff-$diff_hour*3600)/60);
$diff_second = $diff-$diff_hour*3600-$diff_minute*60;
return $diff_hour.":".$diff_minute.":".$diff_second;
}
function so_cmp ($ac_a,$ac_b,$pt_a,$pt_b) {
if($ac_a > $ac_b){
return 0 ;
}
else if($ac_a<$ac_b){
return 1 ;
}
else if($pt_a>$pt_b){
return 1;
}
else{
return 0;
}
}
function match_shjs($lang) {
switch ($lang) {
case "1":
$lang="cpp";
break;
case "2":
$lang="c";
break;
case "3":
$lang="java";
break;
case "4":
$lang="pascal";
break;
case "5":
$lang="python";
break;
case "6":
$lang="csharp";
break;
case "7":
$lang="cpp";
break;
case "8":
$lang="perl";
break;
case "9":
$lang="ruby";
break;
case "10":
$lang="cpp";
break;
case "11":
$lang="sml";
break;
case "12":
$lang="cpp";
break;
case "13":
$lang="c";
break;
}
return $lang;
}
function match_lang($lang) {
switch ($lang) {
case "1":
$lang="GNU C++";
break;
case "2":
$lang="GNU C";
break;
case "3":
$lang="Oracle Java";
break;
case "4":
$lang="Free Pascal";
break;
case "5":
$lang="Python";
break;
case "6":
$lang="C# (Mono)";
break;
case "7":
$lang="Fortran";
break;
case "8":
$lang="Perl";
break;
case "9":
$lang="Ruby";
break;
case "10":
$lang="Ada";
break;
case "11":
$lang="Standard ML";
break;
case "12":
$lang="Visual C++";
break;
case "13":
$lang="Visual C";
break;
}
return $lang;
}
function db_get_substitle() {
global $substitle;
$que="select substitle from config";
list($substitle)=mysql_fetch_array(mysql_query($que));
}
function convert_str ($str) {
if ($str===null) return "";
if (get_magic_quotes_gpc())
{
return $str;
}
return mysql_real_escape_string ($str);
}
function convert_all_str($arr) {
if ($arr==null) return null;
if (!is_array($arr)) {
return convert_str($arr);
}
foreach ($arr as $k=>$a) {
if (is_array($a)) $arr[$k]=convert_all_str($a);
else $arr[$k]=convert_str($a);
}
return $arr;
}
db_connect();
$_COOKIE=convert_all_str($_COOKIE);
$_GET=convert_all_str($_GET);
$_POST=convert_all_str($_POST);
db_get_substitle();
?>