Web サイトのセクションをパスワードで保護しようとしてもうまくいきません。私は php にあまり詳しくないので、zubrag.com のコードを出発点として使用しています。私が直面している問題は、現在のコードで次のようなエラーが発生することです。
cannot modify header information - headers already sent by (output started at /var/www/index.php:78) in /var/www/index.php on line 333
私は78のように見てきました.phpブラケットがある最初の行であるため、出力はそこから始まります.
333行目は私のsetcookieコマンドです。また、Cookie を設定するには、ヘッダーで行う必要があることも理解しています。残念ながら、私のコードでそれを行う方法がわかりません。オンラインで調べたところ、一般的にこれを修正する最善の方法は と を使用することであることがわかりましob_start()たob_end_flush()。さて、私はそれらのコマンドをさまざまな場所に配置しようとしましたが、まだうまくいきません.
ob_start他のすべての前に、ファイルの先頭に設定しました。ケースの最初にも試しましたが、うまくいきませんでした。
ファイルの最後とケースの最後に設定ob_end_flushしましたが、それもうまくいきませんでした。
<html lang="en">
<head>
<title>DVR Controls</title>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<link rel="stylesheet" type="text/css" href="css/superfish.css">
<link rel="stylesheet" media="screen" href="css/superfish-navbar.css" />
<script type="text/javascript" src="js/jquery-1.2.6.min.js"></script>
<script type="text/javascript" src="js/hoverIntent.js"></script>
<script type="text/javascript" src="js/superfish.js"></script>
<script type="text/javascript">
// initialise plugins
jQuery(function(){
jQuery('ul.sf-menu').superfish();
});
</script>
<script>
$(document).ready(function(){
$("ul.sf-menu").superfish({
pathClass: 'current'
});
});
</script>
<center><b><font size="36">The Radeus DVR Prototype</font></b></center>
</head>
<body>
<ul class="sf-menu sf-navbar">
<li class="current">
<a>Configuration</a>
<ul>
<li>
<a href="index.php?page=SysConfig">System Configuration</a>
</li>
<li>
<a href="index.php?page=FileConfig">File Configuration</a>
</li>
<li>
<a href="index.php?page=NetworkConfig">Network Configuration</a>
</li>
</ul>
</li>
<li>
<a href="index.php?page=Files">Files</a>
</li>
<li>
<a href="index.php?page=Maintenance">Maintenance Mode</a>
</li>
<li>
<a href="index.php?page=IETM">IETM</a>
</li>
<li>
<a>Power Options</a>
<ul>
<li>
<a href="index.php?page=Shutdown">Shutdown</a>
</li>
<li>
<a href="index.php?page=Reboot">Reboot</a>
</li>
</ul>
</li>
</ul>
</body>
<br><br><br><br><br>
<body>
<br>
<?php
ob_start();
$currentdir = '/data/'; //Location of Hard Drive
/**
* @func: Executes the command passed to it as argument and prints the
* command console output line by line onto the html output stream hence
* giving the illusion of having the command executing in the html window itself.
*/
function html_exec_cmd($cmd) {
$proc = popen("($cmd)2>&1", "r");
echo '<pre>';
while(!feof($proc)) {
$result = fgets($proc, 100);
echo htmlspecialchars($result);
flush();
}
pclose($proc);
echo '</pre>';
}
switch ($_GET['page'])
{
case 'SysConfig':
echo "Welcome to System Config!";
break;
case 'FileConfig':
echo "Welcome to File Config!";
break;
case 'NetworkConfig':
?>
<b><fontsize="16">Current Settings:</b></font>
<?php
html_exec_cmd('ifconfig eth0');
break;
case 'Files':
$FileCount = 0;
$dir = opendir($currentdir);
$array = array();
echo '<ul>';
echo '<form method = "post" action = "">';
while ($File = readdir($dir)){
echo '<form action="test.php" method = "post">';
//if (is_file($file))
$ext = pathinfo($File, PATHINFO_EXTENSION);
if ($ext == '264'){
$array[] = "$File";
echo "<INPUT class='radio' type='radio' name='FileName' value='$File' /> <span>$File</span><p>";
$FileCount++;
}
}
echo "<INPUT TYPE = 'Submit' name = 'FormSubmit' value = 'Submit'>";
echo '</form>';
if ($_POST['FormSubmit'] == "Submit")
{
$FileParameters = $_POST['FileName'];
$FileExecuteCommand = "cd //; /etc/init.d/matrix-gui-e stop;echo 0 > /sys/devices/platform/vpss/graphics0/enabled;./usr/share/ti/ti-omx/ decode_display_a8host_debug.xv5T -w 1920 -h 1080 -f 60 -c h264 -g 0 -d 0 -i $currentdir$FileParameters;/etc/init.d/matrix-gui-e start";
echo exec($FileExecuteCommand);
}
break;
case 'Maintenance':
###############################################################
# Page Password Protect 2.13
###############################################################
# Visit http://www.zubrag.com/scripts/ for updates
###############################################################
#
# Usage:
# Set usernames / passwords below between SETTINGS START and SETTINGS END.
# Open it in browser with "help" parameter to get the code
# to add to all files being protected.
# Example: password_protect.php?help
# Include protection string which it gave you into every file that needs to be protected
#
# Add following HTML code to your page where you want to have logout link
# <a href="http://www.example.com/path/to/protected/page.php?logout=1">Logout</a>
#
###############################################################
/*
-------------------------------------------------------------------
SAMPLE if you only want to request login and password on login form.
Each row represents different user.
$LOGIN_INFORMATION = array(
'zubrag' => 'root',
'test' => 'testpass',
'admin' => 'passwd'
);
--------------------------------------------------------------------
SAMPLE if you only want to request only password on login form.
Note: only passwords are listed
$LOGIN_INFORMATION = array(
'root',
'testpass',
'passwd'
);
--------------------------------------------------------------------
*/
##################################################################
# SETTINGS START
##################################################################
// Add login/password pairs below, like described above
// NOTE: all rows except last must have comma "," at the end of line
$LOGIN_INFORMATION = array(
'admin' => 'adminpass'
);
// request login? true - show login and password boxes, false - password box only
define('USE_USERNAME', true);
// User will be redirected to this page after logout
define('LOGOUT_URL', 'http://www.example.com/');
// time out after NN minutes of inactivity. Set to 0 to not timeout
define('TIMEOUT_MINUTES', 3);
// This parameter is only useful when TIMEOUT_MINUTES is not zero
// true - timeout time from last activity, false - timeout time from login
define('TIMEOUT_CHECK_ACTIVITY', true);
##################################################################
# SETTINGS END
##################################################################
///////////////////////////////////////////////////////
// do not change code below
///////////////////////////////////////////////////////
// show usage example
if(isset($_GET['help'])) {
die('Include following code into every page you would like to protect, at the very beginning (first line):<br><?php include("' . str_replace('\\','\\\\',__FILE__) . '"); ?>');
}
// timeout in seconds
$timeout = (TIMEOUT_MINUTES == 0 ? 0 : time() + TIMEOUT_MINUTES * 60);
// logout?
if(isset($_GET['logout'])) {
setcookie("verify", '', $timeout, '/'); // clear password;
header('Location: ' . LOGOUT_URL);
exit();
}
if(!function_exists('showLoginPasswordProtect')) {
// show login form
function showLoginPasswordProtect($error_msg) {
?>
<html>
<head>
<title>Please enter password to access this page</title>
<META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">
<META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
</head>
<body>
<style>
input { border: 1px solid black; }
</style>
<div style="width:500px; margin-left:auto; margin-right:auto; text-align:center">
<form method="post">
<h3>Please enter password to access this page</h3>
<font color="red"><?php echo $error_msg; ?></font><br />
<?php if (USE_USERNAME) echo 'Login:<br /><input type="input" name="access_login" /><br />Password:<br />'; ?>
<input type="password" name="access_password" /><p></p><input type="submit" name="Submit" value="Submit" />
</form>
<br />
</div>
</body>
</html>
<?php
// stop at this point
die();
}
}
// user provided password
if (isset($_POST['access_password'])) {
$login = isset($_POST['access_login']) ? $_POST['access_login'] : '';
$pass = $_POST['access_password'];
if (!USE_USERNAME && !in_array($pass, $LOGIN_INFORMATION)
|| (USE_USERNAME && ( !array_key_exists($login, $LOGIN_INFORMATION) || $LOGIN_INFORMATION[$login] != $pass ) )
) {
showLoginPasswordProtect("Incorrect password.");
}
else {
// set cookie if password was validated
setcookie("verify", md5($login.'%'.$pass), $timeout, '/');
// Some programs (like Form1 Bilder) check $_POST array to see if parameters passed
// So need to clear password protector variables
unset($_POST['access_login']);
unset($_POST['access_password']);
unset($_POST['Submit']);
}
}
else {
// check if password cookie is set
if (!isset($_COOKIE['verify'])) {
showLoginPasswordProtect("");
}
// check if cookie is good
$found = false;
foreach($LOGIN_INFORMATION as $key=>$val) {
$lp = (USE_USERNAME ? $key : '') .'%'.$val;
if ($_COOKIE['verify'] == md5($lp)) {
$found = true;
// prolong timeout
if (TIMEOUT_CHECK_ACTIVITY) {
setcookie("verify", md5($lp), $timeout, '/');
}
break;
}
}
if (!$found) {
showLoginPasswordProtect("");
}
}
?>
<B><fontsize=16>Are you sure you want to Format the data disk?</b></font><br><br>
<?php
echo '<form method = "post">';
echo "<INPUT TYPE = 'Submit' name = 'FormatSubmit' value = 'Submit'>";
?>
<br><br><br>
Please check the box to verify you want to Format the data disk.
<Input type = 'Checkbox' Name ='FormatCheck' value ="checked">
<?php
echo '</form>';
if (($_POST['FormatSubmit'] == "Submit") & ($_POST['FormatCheck'] == "checked"))
{
html_exec_cmd('echo -e "o\nn\np\n1\n\n\nw\n" | fdisk /dev/sda;sleep 1;mkfs.ext3 /dev/sda1;mount /dev/sda1 /data/');
}
ob_end_flush();
break;
case 'IETM':
echo "Welcome to IETM";
break;
case 'Shutdown':
//echo "Welcome to Shutdown";
?>
<B><fontsize=16>Are you sure you want to shutdown the DVR?</b></font><br><br>
<?php
echo '<form method = "post">';
echo "<INPUT TYPE = 'Submit' name = 'ShutDownSubmit' value = 'Submit'>";
?>
<br><br><br>
Please check the box to verify you want to shutdown the DVR.
<Input type = 'Checkbox' Name ='ShutDownCheck' value ="checked">
<?php
echo '</form>';
if (($_POST['ShutDownSubmit'] == "Submit") & ($_POST['ShutDownCheck'] == "checked"))
{
$ShutDownCommand = "init 0";
echo exec($ShutDownCommand);
}
break;
case 'Reboot':
//echo "Welcome to Reboot";
?>
<B><fontsize=16>Are you sure you want to reboot the DVR?</b></font><br>
<br>
<?php
echo '<form method = "post">';
echo "<INPUT TYPE = 'Submit' name = 'RebootSubmit' value = 'Submit'>";
?>
<br><br><br>
Please check the box to verify you want to reboot the DVR.
<Input type = 'Checkbox' Name ='RebootCheck' value ="checked">
<?php
if (($_POST['RebootSubmit'] == "Submit")& ($_POST['RebootCheck'] == "checked"))
{
$RebootCommand = "reboot";
echo exec($RebootCommand);
}
echo '</form>';
break;
default :
echo "The Radeus DVR";
}
?>
</body>
</html>
<?php ob_end_flush(); ?>