/**
* Deals with all directory requests the same. Printing a list of files to the output.
*
* @param out the stream to prin to
* @param f the file to look in
* @throws IOException
*/
private void handleDirectoryRequest(PrintStream out, File f) throws IOException {
// create a dir listing as a text file
String[] listing = SimpleHttpServer2.generateDirListing(f);
out.print("HTTP/1.0 200 OK\r\n");
out.print("Content-Type: text/plain\r\n");
long contentLength = SimpleHttpServer2.getContentLengthFromStringArray(listing);
out.print("Content-Length: " + contentLength + "\r\n\r\n");
out.flush();
for (String s : listing) {
out.println(s);
}
out.flush();
return;
}
/**
* Checks to see if a directory requested is fair game.
*
* @param out stream to print errors to
* @param f the file to check
* @return true if all was good, false otherwise.
*/
private boolean checkBelowAndHandle(PrintStream out, File f) {
// make sure the file is really in the content directory
try {
if (!SimpleHttpServer2.checkIsBelow(new File(CONTENT_BASE_DIR_NAME), f)) {
System.out.println("Disallowed request");
out.println("HTTP/1.0 403 Forbidden\r\n\r\n");
out.println(
"<html><body>You do not have permission to access that file. "
+ "Are you trying to snoop arround?</html></body>");
out.flush();
return false;
}
} catch (IOException e) {
return false;
}
return true;
}
/**
* Processes one request for a file or directory.
*
* @param request the pathname for the requested file
* @param headers
* @param out output stream for the client connection
* @throws IOException
*/
private void handleFileRequestGET(
String request, List<String> headers, PrintStream out, InputStream in) {
System.out.println("File requested: " + request);
try {
File f = new File(CONTENT_BASE_DIR_NAME + request);
if (!checkBelowAndHandle(out, f)) return;
if (f.isDirectory()) {
handleDirectoryRequest(out, f);
} else {
// catch FileNotFoundException if file doesn't exist
FileInputStream fis = new FileInputStream(f);
out.print("HTTP/1.0 200 OK\r\n");
out.print("Content-Type: " + SimpleHttpServer2.guessMimeType(f) + "\r\n");
out.print("Content-Length: " + f.length() + "\r\n\r\n");
out.flush();
// copy contents of file to output stream
// loop uses array versions of read/write methods to
// copy multiple bytes with each call
byte[] data = new byte[64 * 1024];
int bytesRead;
while ((bytesRead = fis.read(data)) != -1) {
out.write(data, 0, bytesRead);
}
out.flush();
out.close();
in.close();
return;
}
} catch (FileNotFoundException e) {
System.out.println("File not found: " + request);
out.println("HTTP/1.0 404 Not Found\r\n\r\n");
out.println("<html><body>404 File Not Found, not my problem. Sorry.</body></html>");
out.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
