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| Code | |||||
<script language="php"> /*************************************************** * ServerInfo v 1.0 * * * * (c) Simon Booth 2000 * * * * These two functions return the information as * * to what server and extensions a particular web * * server is running. * * * * Both functions take the name/IP of a server and * * an optional port to connect to. * * * * function GetServerList($host [, $port = 80]); * * * * Returns an array of server and extensions on * * target host. * * * * function GetServerInfo($host [, $port = 80]); * * * * This function returns the 'Server: ' header * * information, this is a line something like: * * * * * ***************************************************/ function GetServerList($host, $port = 80) { $server_list = false; // Set return value to false initially $idx = 0; // Initialise index into $server_list $server = trim(GetServerInfo($host, $port)); // Get the 'Server: ' line from the host if($server != "") // If we got something back... { unset($server_list); // Unset $server_list so we can use it as an array $tok = strtok($server, " "); // Start tokenising the server line if($tok) // Get rid of 'Server: ' entry { $tok = strtok(" "); // Now start retrieving the server entries while($tok) { if($tok[0] == "(") // Apache reports itself as Apache/x.x.x (Platform) { $server_list[$idx-1]["server"] .= " ". $tok; // Concatenate info to last server } else { $pos = strpos($tok, "/"); // If there's a '/' we/ve got server and // version information if($pos == 0) { $server_list[$idx]["server"] = $tok; // Store the server name } else { $server_list[$idx]["server"] = substr($tok, 0, $pos); // Store the server name $server_list[$idx]["version"] = substr($tok, $pos + 1); // Store the server version } $idx++; // Increment server index } $tok = strtok(" "); // Get next server (if any) } } } return $server_list; // Return $server_list or false if not present } function GetServerInfo($host, $port = 80) { $server = false; // Set return value to false initially if($fp = fsockopen($host, $port)) // Open a connection to host:port { fputs($fp, "HEAD / HTTP/1.0\n\n"); // Request the header of the site's default page fputs($fp, "Host: $host\n"); fputs($fp, "Connection: close\n\n"); while(!feof($fp)) // Read in the header line by line { $hdr = fgets($fp, 128); if(strncmp($hdr, "Server:", 7) == 0) // Have we got 'Server: ' yet? { unset($server); $server = $hdr; // Store it in the return value break; } } fclose($fp); } return $server; } </script> <!-- ************************************ Example usage ************************************ --> <html> <head> <title>Example of server information usage</title> </head> <body bgcolor="#FFFFCC"> <center> <p> <h3> Server information <br> Host: <?php echo $server; ?> </h3> </p> <script language="php"> if(empty($server)) { $server = ""; } if($server != "") { $serv = GetServerList($server); echo "<table width=\"50%\" border=\"1\" align=\"center\">\n"; echo "<tr>\n"; echo "<th>Server/Extension</th>\n"; echo "<th>Version</th>\n"; echo "</tr>\n"; for($i=0; $i<sizeof($serv); $i++) { echo "<tr>\n"; echo "<td width=\"50%\">\n"; echo $serv[$i]["server"]; echo "</td>\n"; echo "<td width=\"50%\" align=\"right\">\n"; echo $serv[$i]["version"]; echo "</td>\n"; echo "</tr>\n"; } echo "</table>\n"; } </script> <br> <form target="<?php echo $PHP_SELF; ?>" method="post"> Host to query <input type="text" width="40" name="server"> <input type="submit"> </form> Host should be something like 'www.php.net' <br> <br> (c) <a href="mailto:sbooth@ukonline.co.uk">Simon Booth</a> 2000 </center> </body> </html> | |||||
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