<?php
//===================初期設定=====================
//時間の取得
$now = date("Y/m/d H:i");
$data_file = "./bbs.log"; //データファイル名
$data_max = 100; //データ最大記録数
$page_view = 10; //1ページの記事表示件数
$passwd = "777"; //管理者用パスワード
//================================================

//スーパーグローバル変数対策
if(!isset($HTTP_USER_AGENT)){
    $http_user_agent = $_SERVER['HTTP_USER_AGENT'];
}else{
    $http_user_agent = $HTTP_USER_AGENT;
}
if(!isset($PHP_SELF)){ $PHP_SELF = $_SERVER["PHP_SELF"]; }
if(!isset($flag)){ $flag = $_GET['flag']; }
if(!isset($re_sub)){ $re_sub = $_POST['re_sub']; }
if(!isset($code)){
    if($_POST['code']){
        $code = $_POST['code'];
    }else{
        $code = $_GET['code'];
    }
}
if(!isset($action)){
    if($_POST['action']){
        $action = $_POST['action'];
    }else{
        $action = $_GET['action'];
    }
}
if(!isset($delcode)){ $delcode = $_POST['delcode']; }
if(!isset($password)){ $password = $_POST['password']; }
if(!isset($ress)){ $ress = $_POST['ress']; }
if(!isset($name)){ $name = $_POST['name']; }
if(!isset($email)){ $email = $_POST['email']; }
if(!isset($hp)){ $hp = $_POST['hp']; }
if(!isset($subject)){ $subject = $_POST['subject']; }
if(!isset($comment)){ $comment = $_POST['comment']; }
if(!isset($tag)){ $tag = $_POST['tag']; }
if(!isset($pass)){ $pass = $_POST['pass']; }
if(!isset($view_code)){ $view_code = $_GET['view_code']; }
if(!isset($pline)){ $pline = $_GET['pline']; }
//エスケープ記号対策
$name = stripslashes($name);
$subject = stripslashes($subject);
$comment = stripslashes($comment);

// 振り分け
$user_agent= explode( "/", $http_user_agent);
if($user_agent[0] == "J-PHONE"){
    $title_gazou = "title.png";
    $home_gazou = "home.png";
}else{
    $title_gazou = "title.gif";
    $home_gazou = "home.gif";
}
//携帯の判定
if($user_agent[0] == "DoCoMo" || substr("$user_agent[0]",0,4) == "KDDI" || $user_agent[0] == "J-PHONE"){
    $keitai_flag = 1;
}
?>

<HTML>
<HEAD>
    <META HTTP-EQUIV="Content-Type" CONTENT="text/html;CHARSET=Shift_JIS">
    <TITLE>携帯掲示板</TITLE>

<?php
echo "<center><img src=$title_gazou></center>\n";

//===============インライン関数===================
function inline_link($link){
    $link = ereg_replace("(https?|ftp|news)(://[[:alnum:]\+\$\;\?\.%,!#~*/:@&=_-]+)","<a href=\"\\1\\2\" target=\"_blank\">\\1\\2</a>",$link);
    return $link;
}
//===============データの削除==================
if($action == "delete"){
    if(($delcode != "") && ($password != "")){
        $delfile = file($data_file);
        $fp = fopen($data_file, "w");
        for($i=0; $i<sizeof($delfile); $i++){
            list($dcode,$dress,$dname,$demail,$dhp,$dsubject,$dcomment,$dpass,$dnow,$dhost,$dagent) = split(",", $delfile[$i]);
            if (($password == $dpass) || ($password == $passwd)) {
                if ($delcode == $dcode) {
                    $delfile[$i] = "";
                }
            }
            fputs($fp,$delfile[$i]);
        }
        fclose($fp);
        unset($delfile);
    }
    if($keitai_flag){
        echo "<a href=$PHP_SELF>一覧に戻る</a><br>\n";
    }else{
        echo "<META HTTP-EQUIV=refresh CONTENT=0;URL=$PHP_SELF>\n";
    }
//===============データの書き込み=================
}elseif($action == "regist"){
    if($name && $subject){
        $code = time(); //アクセス時の秒数
        //ホスト名を取得
        $host = getenv("REMOTE_HOST");
        $addr = getenv("REMOTE_ADDR");
        if($host == "" || $host ==$addr){
            $host = gethostbyaddr($addr);
        }
        //訪問者のブラウザを取得
        $agent = getenv("HTTP_USER_AGENT");
        //ここから書き込みデータの調整
        if($keitai_flag){ //携帯からの書き込みならデコード処理
            $name = urldecode($name);
            $subject = urldecode($subject);
            $comment = urldecode($comment);
        }
        $name = htmlspecialchars($name); //特殊文字のHTMLエントリへの変換
        $email = htmlspecialchars($email);
        $hp = htmlspecialchars($hp);
        $subject = htmlspecialchars($subject);
        $comment = htmlspecialchars($comment);
        $comment = nl2br($comment); //HTML改行文字の挿入
        $comment = str_replace("\r", "", $comment); //文字列の置換
        $comment = str_replace("\n", "", $comment);
        //ログファイルの区切文字(",")と区別するために文字コード(&#44)に書き換える。
        $ress = str_replace(",", "&#44;",$ress);
        $name = str_replace(",", "&#44;",$name);
        $email = str_replace(",", "&#44",$email);
        $hp = str_replace(",", "&#44",$hp);
        $subject = str_replace(",", "&#44;",$subject);
        $comment = str_replace(",", "&#44;",$comment);
        //インラインリンクを実現（URLのみ）
        $comment = inline_link($comment);

        $message = file($data_file);
        //ログファイルの区切文字(",")と区別するために文字コード(&#44)に書き換え。
        $fname = str_replace(",", "&#44;",$fname);
        //配列要素を文字列により連結
        $input_msg = implode(",", array($code,$ress,$name,$email,$hp,$subject,$comment,$pass,$now,$host,$agent));
        $fp = fopen($data_file, "w");
        rewind($fp);
        fputs($fp, "$input_msg\n");
        //最大記録数の調整
        if(($data_max * 1.2) < sizeof($message)){
            $msg_num = $data_max - 1;
        }else{
            $msg_num = sizeof($message);
        }
        for($i = 0; $i < $msg_num; $i++){
            fputs($fp, $message[$i]);
        }
        fclose($fp);
        unset($message);
    }
    if($keitai_flag){
        echo "<a href=$PHP_SELF>一覧に戻る</a><br>\n";
    }else{
        echo "<META HTTP-EQUIV=refresh CONTENT=0;URL=$PHP_SELF>\n";
    }
//===============登録用画面=================
}elseif($action == "toroku"){
    echo "<br>各項目にご記入の上、下の「送信」ボタンを押して下さい。尚、お名前と題目は必須項目になっています。<BR>\n";
    echo "<FORM ACTION=$PHP_SELF METHOD=POST>\n";
    echo "<input type=hidden name=action value=regist>\n";
    echo "<FONT COLOR=#000099>■お名前</FONT><BR>\n";
    echo "<INPUT TYPE=TEXT NAME=name SIZE=18><BR>\n";
    echo "<FONT COLOR=#000099>■E-mail</FONT><BR>\n";
    echo "<INPUT TYPE=TEXT NAME=email SIZE=18><BR>\n";
    echo "<FONT COLOR=#000099>■URL</FONT><BR>\n";
    echo "<INPUT TYPE=TEXT NAME=hp SIZE=18><BR>\n";
    echo "<FONT COLOR=#000099>■題目</FONT><BR>\n";
    echo "<INPUT TYPE=TEXT NAME=subject SIZE=18><BR>\n";
    echo "<FONT COLOR=#000099>■コメント</FONT><BR>\n";
    echo "<TEXTAREA NAME=comment ROWS=3 COLS=18></TEXTAREA><BR>\n";
    echo "<FONT COLOR=#000099>■パスワード</FONT><BR>\n";
    echo "<INPUT TYPE=TEXT NAME=pass SIZE=7><BR>\n";
    if($flag == 'return'){
        echo "<input type=submit value=返信>\n";
        echo "<input type=hidden name=ress value=$code>\n";
    }else{
        echo "<INPUT TYPE=SUBMIT NAME=Submit VALUE=送信> <INPUT TYPE=RESET NAME=Reset VALUE=リセット>\n";
    }
    echo "</FORM><br><a href=$PHP_SELF>一覧に戻る</a>\n";
}elseif($action == "view"){
    $message = file($data_file);
    for($i=0; $i<sizeof($message); $i++){
        list($code,$ress,$name,$email,$hp,$subject,$comment,$pass,$now,$host,$agent) = split(",", $message[$i]);
        if($code == $view_code){
            echo "<form method=POST action=$PHP_SELF>\n";
            echo "<font color=#000099>■$subject</font><br>\n";
            if($email != ""){
                echo "<a href=mailto:$email>$name</a>\n";
            }else{
                echo "$name\n";
            }
            if($hp != ""){
                echo " <a href=$hp><img src=./" . $home_gazou . " border=0></a>\n";
            }
            echo "<br>\n";
            echo "<font color=#CC0099>$now</font><br>\n";
            if($comment){
                echo "［コメント］<br>$comment<br><br>\n";
            }
            echo "<font color='green'>[$host] <br>$agent</font><br>\n";
            echo "<input type=hidden name=action value=delete>\n";
            echo "<input type=hidden name=delcode value=$code>\n";
            echo "削除キー：<input type=text size=7 name=password>\n";
            echo "<input type=submit value=削除>\n";
            echo "</form><br>\n";
            if($ress == ""){
                echo "<a href=$PHP_SELF?action=toroku&code=$code&flag=return>この記事に返信</a><br>\n";
            }
            echo "<a href=$PHP_SELF>一覧に戻る</a>\n";
        }
    }
    unset($message);
//===============ログの表示=================
}else{
    echo "<form method=POST action=$PHP_SELF>\n";
    echo "<center><input type=submit value=新規投稿></center>\n";
    echo "<input type=hidden name=action value=toroku>\n";
    echo "</form>\n";
    //親記事だけを配列に抜き出す
    $message = file($data_file);
    for($i=0; $i<sizeof($message); $i++){
        list($code,$ress,$name,$email,$hp,$subject,$comment,$pass,$now,$host,$agent) = split(",", $message[$i]);
        if($ress == ""){
            $PARENT[] = $message[$i];
        }
    }

    $msg_count = count($PARENT); //親記事の行数をカウント
    if($pline == ""){
        $p_line = 0;
    }else{
        $p_line = $pline;
    }
    $end_data = $msg_count - 1;
    $page_end = $p_line + ($page_view - 1);
    if($page_end >= $end_data){
        $page_end = $end_data;
    }
    for($i=$p_line; $i<=$page_end; $i++){
        list($code2,$ress2,$name2,$email2,$hp2,$subject2,$comment2,$pass2,$now2,$host2,$agent2) = split(",", $PARENT[$i]);
        //親記事の表示
        echo "<font color=#000099>■</font><a href=$PHP_SELF?action=view&view_code=$code2>$subject2</a><br>\n";
        echo $name2 . "<br>\n";
        echo "<font color='green'>$now2</font><br>\n";
        //返信記事の表示
        for($j=0; $j<sizeof($message); $j++){
            list($code3,$ress3,$name3,$email3,$hp3,$subject3,$comment3,$pass3,$now3,$host3,$agent3) = split(",", $message[$j]);
            if($code2 == $ress3){
                echo "<a href=$PHP_SELF?action=view&view_code=$code3>$subject3</a></font><br>\n";
                echo "　" . $name3 . "<br>\n";
                echo "　<font color='green'>$now3</font><br>\n";
            }
        }
    }
    if($page_end >= $page_view){
        $page_count = floor($page_end / $page_view);
        $prev_line = ($page_count - 1) * $page_view;
        echo "<a href=$PHP_SELF?pline=$prev_line>前のページ</a><br>\n";
    }
    $next_line = $page_end + 1;
    if($page_end != $end_data){
        echo "<a href=$PHP_SELF?pline=$next_line>次のページ</a><br>\n";
    }
    unset($message);
}
?>

<hr>
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</BODY>
</HTML>