Example Trust Program

The following program is a simple example that requires trust to work. If it does not have trust it asks for it through use of an HTTP header. If it does have trust it displays a list of EVE-related variables. The code is available in both PHP and ASP (ASP version courtesy of Dave White).

PHP Version

<?php

if ($_SERVER['HTTP_EVE_TRUSTED'] == 'no')
{
    header('eve.trustMe:http://' . $_SERVER['HTTP_HOST'] . '/eve/::Please trust me, I\'m nice');
    print '<html><body>';
    print '<h1>Trust Required</h1>';
    print 'I need to be trusted to work properly';
}
else
{
    print '<html><body>';
    print '<h1>Trusted Connection</h1>';
}

print '<h1>Eve Variables</h1>';
foreach ($_SERVER as $k=>$v)
{
    if (preg_match('/^HTTP_EVE_/', $k))
    {
        print htmlentities($k) . ' is ' . htmlentities($v) . '<br>';
    }
}
print '</body></html>';

?>

ASP Version

If Request.ServerVariables("HTTP_EVE.TRUSTED")="no" Then
  Response.AddHeader "eve.trustMe","http://" & Request.ServerVariables("HTTP_HOST") & "/::Optional message"
  Response.Write(Request.ServerVariables("HTTP_EVE.TRUSTED"))
Else
  For each VarName in Request.ServerVariables
    If InStr((VarName),"HTTP_EVE") Then
      Response.Write(VarName & " : " & Request.ServerVariables(VarName) & "<br>")
    End If
  Next
End If