package de.vanmar.android.yarrn.util;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URLEncoder;
import java.util.Date;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Locale;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.TimeZone;
import java.util.Vector;
/**
* A simple, tiny, nicely embeddable HTTP 1.0 (partially 1.1) server in Java
* <p/>
* <p/>
* NanoHTTPD version 1.27, Copyright © 2001,2005-2013 Jarno Elonen
* (elonen@iki.fi, http://iki.fi/elonen/) and Copyright © 2010 Konstantinos
* Togias (info@ktogias.gr, http://ktogias.gr)
* <p/>
* <p/>
* <b>Features + limitations: </b>
* <ul>
* <p/>
* <li>Only one Java file</li>
* <li>Java 1.1 compatible</li>
* <li>Released as open source, Modified BSD licence</li>
* <li>No fixed config files, logging, authorization etc. (Implement yourself if
* you need them.)</li>
* <li>Supports parameter parsing of GET and POST methods (+ rudimentary PUT
* support in 1.25)</li>
* <li>Supports both dynamic content and file serving</li>
* <li>Supports file upload (since version 1.2, 2010)</li>
* <li>Supports partial content (streaming)</li>
* <li>Supports ETags</li>
* <li>Never caches anything</li>
* <li>Doesn't limit bandwidth, request time or simultaneous connections</li>
* <li>Default code serves files and shows all HTTP parameters and headers</li>
* <li>File server supports directory listing, index.html and index.htm</li>
* <li>File server supports partial content (streaming)</li>
* <li>File server supports ETags</li>
* <li>File server does the 301 redirection trick for directories without '/'</li>
* <li>File server supports simple skipping for files (continue download)</li>
* <li>File server serves also very long files without memory overhead</li>
* <li>Contains a built-in list of most common mime types</li>
* <li>All header names are converted lowercase so they don't vary between
* browsers/clients</li>
* <p/>
* </ul>
* <p/>
* <p/>
* <b>Ways to use: </b>
* <ul>
* <p/>
* <li>Run as a standalone app, serves files and shows requests</li>
* <li>Subclass serve() and embed to your own program</li>
* <li>Call serveFile() from serve() with your own base directory</li>
* <p/>
* </ul>
* <p/>
* See the end of the source file for distribution license (Modified BSD
* licence)
*/
@SuppressWarnings("all")
public class NanoHTTPD {
// ==================================================
// API parts
// ==================================================
/**
* Handles one session, i.e. parses the HTTP request and returns the
* response.
*/
private class HTTPSession implements Runnable {
private Socket mySocket;
public HTTPSession(final Socket s) {
mySocket = s;
final Thread t = new Thread(this);
t.setDaemon(true);
t.start();
}
/**
* Decodes the sent headers and loads the data into java Properties' key
* - value pairs
*/
private void decodeHeader(final BufferedReader in,
final Properties pre, final Properties parms,
final Properties header) throws InterruptedException {
try {
// Read the request line
final String inLine = in.readLine();
if (inLine == null) {
return;
}
final StringTokenizer st = new StringTokenizer(inLine);
if (!st.hasMoreTokens()) {
sendError(HTTP_BADREQUEST,
"BAD REQUEST: Syntax error. Usage: GET /example/file.html");
}
final String method = st.nextToken();
pre.put("method", method);
if (!st.hasMoreTokens()) {
sendError(HTTP_BADREQUEST,
"BAD REQUEST: Missing URI. Usage: GET /example/file.html");
}
String uri = st.nextToken();
// Decode parameters from the URI
final int qmi = uri.indexOf('?');
if (qmi >= 0) {
decodeParms(uri.substring(qmi + 1), parms);
uri = decodePercent(uri.substring(0, qmi));
} else {
uri = decodePercent(uri);
}
// If there's another token, it's protocol version,
// followed by HTTP headers. Ignore version but parse headers.
// NOTE: this now forces header names lowercase since they are
// case insensitive and vary by client.
if (st.hasMoreTokens()) {
String line = in.readLine();
while (line != null && line.trim().length() > 0) {
final int p = line.indexOf(':');
if (p >= 0) {
header.put(
line.substring(0, p).trim()
.toLowerCase(Locale.ENGLISH), line
.substring(p + 1).trim());
}
line = in.readLine();
}
}
pre.put("uri", uri);
} catch (final IOException ioe) {
sendError(
HTTP_INTERNALERROR,
"SERVER INTERNAL ERROR: IOException: "
+ ioe.getMessage());
}
}
/**
* Decodes the Multipart Body data and put it into java Properties' key
* - value pairs.
*/
private void decodeMultipartData(final String boundary,
final byte[] fbuf, final BufferedReader in,
final Properties parms, final Properties files)
throws InterruptedException {
try {
final int[] bpositions = getBoundaryPositions(fbuf,
boundary.getBytes());
int boundarycount = 1;
String mpline = in.readLine();
while (mpline != null) {
if (mpline.indexOf(boundary) == -1) {
sendError(
HTTP_BADREQUEST,
"BAD REQUEST: Content type is multipart/form-data but next chunk does not start with boundary. Usage: GET /example/file.html");
}
boundarycount++;
final Properties item = new Properties();
mpline = in.readLine();
while (mpline != null && mpline.trim().length() > 0) {
final int p = mpline.indexOf(':');
if (p != -1) {
item.put(
mpline.substring(0, p).trim()
.toLowerCase(Locale.ENGLISH),
mpline.substring(p + 1).trim());
}
mpline = in.readLine();
}
if (mpline != null) {
final String contentDisposition = item
.getProperty("content-disposition");
if (contentDisposition == null) {
sendError(
HTTP_BADREQUEST,
"BAD REQUEST: Content type is multipart/form-data but no content-disposition info found. Usage: GET /example/file.html");
}
final StringTokenizer st = new StringTokenizer(
contentDisposition, ";");
final Properties disposition = new Properties();
while (st.hasMoreTokens()) {
final String token = st.nextToken().trim();
final int p = token.indexOf('=');
if (p != -1) {
disposition.put(token.substring(0, p).trim()
.toLowerCase(Locale.ENGLISH), token
.substring(p + 1).trim());
}
}
String pname = disposition.getProperty("name");
pname = pname.substring(1, pname.length() - 1);
String value = "";
if (item.getProperty("content-type") == null) {
while (mpline != null
&& mpline.indexOf(boundary) == -1) {
mpline = in.readLine();
if (mpline != null) {
final int d = mpline.indexOf(boundary);
if (d == -1) {
value += mpline;
} else {
value += mpline.substring(0, d - 2);
}
}
}
} else {
if (boundarycount > bpositions.length) {
sendError(HTTP_INTERNALERROR,
"Error processing request");
}
final int offset = stripMultipartHeaders(fbuf,
bpositions[boundarycount - 2]);
final String path = saveTmpFile(fbuf, offset,
bpositions[boundarycount - 1] - offset - 4);
files.put(pname, path);
value = disposition.getProperty("filename");
value = value.substring(1, value.length() - 1);
do {
mpline = in.readLine();
} while (mpline != null
&& mpline.indexOf(boundary) == -1);
}
parms.put(pname, value);
}
}
} catch (final IOException ioe) {
sendError(
HTTP_INTERNALERROR,
"SERVER INTERNAL ERROR: IOException: "
+ ioe.getMessage());
}
}
/**
* Decodes parameters in percent-encoded URI-format ( e.g.
* "name=Jack%20Daniels&pass=Single%20Malt" ) and adds them to given
* Properties. NOTE: this doesn't support multiple identical keys due to
* the simplicity of Properties -- if you need multiples, you might want
* to replace the Properties with a Hashtable of Vectors or such.
*/
private void decodeParms(final String parms, final Properties p)
throws InterruptedException {
if (parms == null) {
return;
}
final StringTokenizer st = new StringTokenizer(parms, "&");
while (st.hasMoreTokens()) {
final String e = st.nextToken();
final int sep = e.indexOf('=');
if (sep >= 0) {
p.put(decodePercent(e.substring(0, sep)).trim(),
decodePercent(e.substring(sep + 1)));
} else {
p.put(decodePercent(e).trim(), "");
}
}
}
/**
* Decodes the percent encoding scheme. <br/>
* For example: "an+example%20string" -> "an example string"
*/
private String decodePercent(final String str)
throws InterruptedException {
try {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
for (int i = 0; i < str.length(); i++) {
final char c = str.charAt(i);
switch (c) {
case '+':
baos.write(' ');
break;
case '%':
baos.write(Integer.parseInt(
str.substring(i + 1, i + 3), 16));
i += 2;
break;
default:
baos.write(c);
break;
}
}
return new String(baos.toByteArray(), "UTF-8");
} catch (final Exception e) {
sendError(HTTP_BADREQUEST, "BAD REQUEST: Bad percent-encoding.");
return null;
}
}
/**
* Find byte index separating header from body. It must be the last byte
* of the first two sequential new lines.
*/
private int findHeaderEnd(final byte[] buf, final int rlen) {
int splitbyte = 0;
while (splitbyte + 3 < rlen) {
if (buf[splitbyte] == '\r' && buf[splitbyte + 1] == '\n'
&& buf[splitbyte + 2] == '\r'
&& buf[splitbyte + 3] == '\n') {
return splitbyte + 4;
}
splitbyte++;
}
return 0;
}
/**
* Find the byte positions where multipart boundaries start.
*/
public int[] getBoundaryPositions(final byte[] b, final byte[] boundary) {
int matchcount = 0;
int matchbyte = -1;
final Vector matchbytes = new Vector();
for (int i = 0; i < b.length; i++) {
if (b[i] == boundary[matchcount]) {
if (matchcount == 0) {
matchbyte = i;
}
matchcount++;
if (matchcount == boundary.length) {
matchbytes.addElement(new Integer(matchbyte));
matchcount = 0;
matchbyte = -1;
}
} else {
i -= matchcount;
matchcount = 0;
matchbyte = -1;
}
}
final int[] ret = new int[matchbytes.size()];
for (int i = 0; i < ret.length; i++) {
ret[i] = ((Integer) matchbytes.elementAt(i)).intValue();
}
return ret;
}
@Override
public void run() {
try {
final InputStream is = mySocket.getInputStream();
if (is == null) {
return;
}
// Read the first 8192 bytes.
// The full header should fit in here.
// Apache's default header limit is 8KB.
// Do NOT assume that a single read will get the entire header
// at once!
final int bufsize = 8192;
byte[] buf = new byte[bufsize];
int splitbyte = 0;
int rlen = 0;
{
int read = is.read(buf, 0, bufsize);
while (read > 0) {
rlen += read;
splitbyte = findHeaderEnd(buf, rlen);
if (splitbyte > 0) {
break;
}
read = is.read(buf, rlen, bufsize - rlen);
}
}
// Create a BufferedReader for parsing the header.
final ByteArrayInputStream hbis = new ByteArrayInputStream(buf,
0, rlen);
final BufferedReader hin = new BufferedReader(
new InputStreamReader(hbis));
final Properties pre = new Properties();
final Properties parms = new Properties();
final Properties header = new Properties();
final Properties files = new Properties();
// Decode the header into parms and header java properties
decodeHeader(hin, pre, parms, header);
final String method = pre.getProperty("method");
final String uri = pre.getProperty("uri");
long size = 0x7FFFFFFFFFFFFFFFl;
final String contentLength = header
.getProperty("content-length");
if (contentLength != null) {
try {
size = Integer.parseInt(contentLength);
} catch (final NumberFormatException ex) {
}
}
// Write the part of body already read to ByteArrayOutputStream
// f
final ByteArrayOutputStream f = new ByteArrayOutputStream();
if (splitbyte < rlen) {
f.write(buf, splitbyte, rlen - splitbyte);
}
// While Firefox sends on the first read all the data fitting
// our buffer, Chrome and Opera send only the headers even if
// there is data for the body. We do some magic here to find
// out whether we have already consumed part of body, if we
// have reached the end of the data to be sent or we should
// expect the first byte of the body at the next read.
if (splitbyte < rlen) {
size -= rlen - splitbyte;
} else if (splitbyte == 0 || size == 0x7FFFFFFFFFFFFFFFl) {
size = 0;
}
// Now read all the body and write it to f
buf = new byte[512];
while (rlen >= 0 && size > 0) {
rlen = is.read(buf, 0, 512);
size -= rlen;
if (rlen > 0) {
f.write(buf, 0, rlen);
}
}
// Get the raw body as a byte []
final byte[] fbuf = f.toByteArray();
// Create a BufferedReader for easily reading it as string.
final ByteArrayInputStream bin = new ByteArrayInputStream(fbuf);
final BufferedReader in = new BufferedReader(
new InputStreamReader(bin));
// If the method is POST, there may be parameters
// in data section, too, read it:
if (method.equalsIgnoreCase("POST")) {
String contentType = "";
final String contentTypeHeader = header
.getProperty("content-type");
StringTokenizer st = null;
if (contentTypeHeader != null) {
st = new StringTokenizer(contentTypeHeader, "; ");
if (st.hasMoreTokens()) {
contentType = st.nextToken();
}
}
if (contentType.equalsIgnoreCase("multipart/form-data")) {
// Handle multipart/form-data
if (!st.hasMoreTokens()) {
sendError(
HTTP_BADREQUEST,
"BAD REQUEST: Content type is multipart/form-data but boundary missing. Usage: GET /example/file.html");
}
final String boundaryExp = st.nextToken();
st = new StringTokenizer(boundaryExp, "=");
if (st.countTokens() != 2) {
sendError(
HTTP_BADREQUEST,
"BAD REQUEST: Content type is multipart/form-data but boundary syntax error. Usage: GET /example/file.html");
}
st.nextToken();
final String boundary = st.nextToken();
decodeMultipartData(boundary, fbuf, in, parms, files);
} else {
// Handle application/x-www-form-urlencoded
String postLine = "";
final char pbuf[] = new char[512];
int read = in.read(pbuf);
while (read >= 0 && !postLine.endsWith("\r\n")) {
postLine += String.valueOf(pbuf, 0, read);
read = in.read(pbuf);
}
postLine = postLine.trim();
decodeParms(postLine, parms);
}
}
if (method.equalsIgnoreCase("PUT")) {
files.put("content", saveTmpFile(fbuf, 0, f.size()));
}
// Ok, now do the serve()
final Response r = serve(uri, method, header, parms, files);
if (r == null) {
sendError(HTTP_INTERNALERROR,
"SERVER INTERNAL ERROR: Serve() returned a null response.");
} else {
sendResponse(r.status, r.mimeType, r.header, r.data);
}
in.close();
is.close();
} catch (final IOException ioe) {
try {
sendError(
HTTP_INTERNALERROR,
"SERVER INTERNAL ERROR: IOException: "
+ ioe.getMessage());
} catch (final Throwable t) {
}
} catch (final InterruptedException ie) {
// Thrown by sendError, ignore and exit the thread.
}
}
/**
* Retrieves the content of a sent file and saves it to a temporary
* file. The full path to the saved file is returned.
*/
private String saveTmpFile(final byte[] b, final int offset,
final int len) {
String path = "";
if (len > 0) {
final String tmpdir = System.getProperty("java.io.tmpdir");
try {
final File temp = File.createTempFile("NanoHTTPD", "",
new File(tmpdir));
final OutputStream fstream = new FileOutputStream(temp);
fstream.write(b, offset, len);
fstream.close();
path = temp.getAbsolutePath();
} catch (final Exception e) { // Catch exception if any
myErr.println("Error: " + e.getMessage());
}
}
return path;
}
/**
* Returns an error message as a HTTP response and throws
* InterruptedException to stop further request processing.
*/
private void sendError(final String status, final String msg)
throws InterruptedException {
sendResponse(status, MIME_PLAINTEXT, null,
new ByteArrayInputStream(msg.getBytes()));
throw new InterruptedException();
}
/**
* Sends given response to the socket.
*/
private void sendResponse(final String status, final String mime,
final Properties header, final InputStream data) {
try {
if (status == null) {
throw new Error("sendResponse(): Status can't be null.");
}
final OutputStream out = mySocket.getOutputStream();
final PrintWriter pw = new PrintWriter(out);
pw.print("HTTP/1.0 " + status + " \r\n");
if (mime != null) {
pw.print("Content-Type: " + mime + "\r\n");
}
if (header == null || header.getProperty("Date") == null) {
pw.print("Date: " + gmtFrmt.format(new Date()) + "\r\n");
}
if (header != null) {
final Enumeration e = header.keys();
while (e.hasMoreElements()) {
final String key = (String) e.nextElement();
final String value = header.getProperty(key);
pw.print(key + ": " + value + "\r\n");
}
}
pw.print("\r\n");
pw.flush();
if (data != null) {
int pending = data.available(); // This is to support
// partial sends, see
// serveFile()
final byte[] buff = new byte[theBufferSize];
while (pending > 0) {
final int read = data.read(buff, 0,
pending > theBufferSize ? theBufferSize
: pending);
if (read <= 0) {
break;
}
out.write(buff, 0, read);
pending -= read;
}
}
out.flush();
out.close();
if (data != null) {
data.close();
}
} catch (final IOException ioe) {
// Couldn't write? No can do.
try {
mySocket.close();
} catch (final Throwable t) {
}
}
}
/**
* It returns the offset separating multipart file headers from the
* file's data.
*/
private int stripMultipartHeaders(final byte[] b, final int offset) {
int i = 0;
for (i = offset; i < b.length; i++) {
if (b[i] == '\r' && b[++i] == '\n' && b[++i] == '\r'
&& b[++i] == '\n') {
break;
}
}
return i + 1;
}
}
/**
* HTTP response. Return one of these from serve().
*/
public class Response {
/**
* HTTP status code after processing, e.g. "200 OK", HTTP_OK
*/
public String status;
/**
* MIME type of content, e.g. "text/html"
*/
public String mimeType;
/**
* Data of the response, may be null.
*/
public InputStream data;
/**
* Headers for the HTTP response. Use addHeader() to add lines.
*/
public Properties header = new Properties();
/**
* Default constructor: response = HTTP_OK, data = mime = 'null'
*/
public Response() {
this.status = HTTP_OK;
}
/**
* Basic constructor.
*/
public Response(final String status, final String mimeType,
final InputStream data) {
this.status = status;
this.mimeType = mimeType;
this.data = data;
}
/**
* Convenience method that makes an InputStream out of given text.
*/
public Response(final String status, final String mimeType,
final String txt) {
this.status = status;
this.mimeType = mimeType;
try {
this.data = new ByteArrayInputStream(txt.getBytes("UTF-8"));
} catch (final java.io.UnsupportedEncodingException uee) {
uee.printStackTrace();
}
}
/**
* Adds given line to the header.
*/
public void addHeader(final String name, final String value) {
header.put(name, value);
}
}
/**
* Some HTTP response status codes
*/
public static final String HTTP_OK = "200 OK",
HTTP_PARTIALCONTENT = "206 Partial Content",
HTTP_RANGE_NOT_SATISFIABLE = "416 Requested Range Not Satisfiable",
HTTP_REDIRECT = "301 Moved Permanently",
HTTP_NOTMODIFIED = "304 Not Modified",
HTTP_FORBIDDEN = "403 Forbidden", HTTP_NOTFOUND = "404 Not Found",
HTTP_BADREQUEST = "400 Bad Request",
HTTP_INTERNALERROR = "500 Internal Server Error",
HTTP_NOTIMPLEMENTED = "501 Not Implemented";
/**
* Common mime types for dynamic content
*/
public static final String MIME_PLAINTEXT = "text/plain",
MIME_HTML = "text/html",
MIME_DEFAULT_BINARY = "application/octet-stream",
MIME_XML = "text/xml";
// ==================================================
// Socket & server code
// ==================================================
/**
* Starts as a standalone file server and waits for Enter.
*/
public static void main(final String[] args) {
myOut.println("NanoHTTPD 1.27 (C) 2001,2005-2013 Jarno Elonen and (C) 2010 Konstantinos Togias\n"
+ "(Command line options: [-p port] [-d root-dir] [--licence])\n");
// Defaults
int port = 80;
File wwwroot = new File(".").getAbsoluteFile();
// Show licence if requested
for (int i = 0; i < args.length; ++i) {
if (args[i].equalsIgnoreCase("-p")) {
port = Integer.parseInt(args[i + 1]);
} else if (args[i].equalsIgnoreCase("-d")) {
wwwroot = new File(args[i + 1]).getAbsoluteFile();
} else if (args[i].toLowerCase(Locale.ENGLISH).endsWith("licence")) {
myOut.println(LICENCE + "\n");
break;
}
}
try {
new NanoHTTPD(port, wwwroot);
} catch (final IOException ioe) {
myErr.println("Couldn't start server:\n" + ioe);
System.exit(-1);
}
myOut.println("Now serving files in port " + port + " from \""
+ wwwroot + "\"");
myOut.println("Hit Enter to stop.\n");
try {
System.in.read();
} catch (final Throwable t) {
}
}
private int myTcpPort;
private final ServerSocket myServerSocket;
private Thread myThread;
private File myRootDir;
/**
* Hashtable mapping (String)FILENAME_EXTENSION -> (String)MIME_TYPE
*/
private static Hashtable theMimeTypes = new Hashtable();
static {
final StringTokenizer st = new StringTokenizer("css text/css "
+ "htm text/html " + "html text/html " + "xml text/xml "
+ "txt text/plain " + "asc text/plain " + "gif image/gif "
+ "jpg image/jpeg " + "jpeg image/jpeg " + "png image/png "
+ "mp3 audio/mpeg " + "m3u audio/mpeg-url "
+ "mp4 video/mp4 " + "ogv video/ogg " + "flv video/x-flv "
+ "mov video/quicktime "
+ "swf application/x-shockwave-flash "
+ "js application/javascript " + "pdf application/pdf "
+ "doc application/msword " + "ogg application/x-ogg "
+ "zip application/octet-stream "
+ "exe application/octet-stream "
+ "class application/octet-stream ");
while (st.hasMoreTokens()) {
theMimeTypes.put(st.nextToken(), st.nextToken());
}
}
private static int theBufferSize = 16 * 1024;
// Change these if you want to log to somewhere else than stdout
protected static PrintStream myOut = System.out;
// ==================================================
// File server code
// ==================================================
protected static PrintStream myErr = System.err;
/**
* GMT date formatter
*/
private static java.text.SimpleDateFormat gmtFrmt;
static {
gmtFrmt = new java.text.SimpleDateFormat(
"E, d MMM yyyy HH:mm:ss 'GMT'", Locale.US);
gmtFrmt.setTimeZone(TimeZone.getTimeZone("GMT"));
}
/**
* The distribution licence
*/
private static final String LICENCE = "Copyright (C) 2001,2005-2013 by Jarno Elonen <elonen@iki.fi>\n"
+ "and Copyright (C) 2010 by Konstantinos Togias <info@ktogias.gr>\n"
+ "\n"
+ "Redistribution and use in source and binary forms, with or without\n"
+ "modification, are permitted provided that the following conditions\n"
+ "are met:\n"
+ "\n"
+ "Redistributions of source code must retain the above copyright notice,\n"
+ "this list of conditions and the following disclaimer. Redistributions in\n"
+ "binary form must reproduce the above copyright notice, this list of\n"
+ "conditions and the following disclaimer in the documentation and/or other\n"
+ "materials provided with the distribution. The name of the author may not\n"
+ "be used to endorse or promote products derived from this software without\n"
+ "specific prior written permission. \n"
+ " \n"
+ "THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"
+ "IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n"
+ "OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n"
+ "IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n"
+ "INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\n"
+ "NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
+ "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
+ "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
+ "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
+ "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.";
/**
* Starts a HTTP server to given port.
* <p/>
* Throws an IOException if the socket is already in use
*/
public NanoHTTPD(final int port, final File wwwroot) throws IOException {
myTcpPort = port;
this.myRootDir = wwwroot;
myServerSocket = new ServerSocket(myTcpPort);
myThread = new Thread(new Runnable() {
@Override
public void run() {
try {
while (true) {
new HTTPSession(myServerSocket.accept());
}
} catch (final IOException ioe) {
}
}
});
myThread.setDaemon(true);
myThread.start();
}
/**
* URL-encodes everything between "/"-characters. Encodes spaces as '%20'
* instead of '+'.
*/
private String encodeUri(final String uri) {
String newUri = "";
final StringTokenizer st = new StringTokenizer(uri, "/ ", true);
while (st.hasMoreTokens()) {
final String tok = st.nextToken();
if (tok.equals("/")) {
newUri += "/";
} else if (tok.equals(" ")) {
newUri += "%20";
} else {
newUri += URLEncoder.encode(tok);
// For Java 1.4 you'll want to use this instead:
// try { newUri += URLEncoder.encode( tok, "UTF-8" ); } catch (
// java.io.UnsupportedEncodingException uee ) {}
}
}
return newUri;
}
/**
* Override this to customize the server.
* <p/>
* <p/>
* (By default, this delegates to serveFile() and allows directory listing.)
*
* @param uri Percent-decoded URI without parameters, for example
* "/index.cgi"
* @param method "GET", "POST" etc.
* @param parms Parsed, percent decoded parameters from URI and, in case of
* POST, data.
* @param header Header entries, percent decoded
* @return HTTP response, see class Response for details
*/
public Response serve(final String uri, final String method,
final Properties header, final Properties parms,
final Properties files) {
myOut.println(method + " '" + uri + "' ");
Enumeration e = header.propertyNames();
while (e.hasMoreElements()) {
final String value = (String) e.nextElement();
myOut.println(" HDR: '" + value + "' = '"
+ header.getProperty(value) + "'");
}
e = parms.propertyNames();
while (e.hasMoreElements()) {
final String value = (String) e.nextElement();
myOut.println(" PRM: '" + value + "' = '"
+ parms.getProperty(value) + "'");
}
e = files.propertyNames();
while (e.hasMoreElements()) {
final String value = (String) e.nextElement();
myOut.println(" UPLOADED: '" + value + "' = '"
+ files.getProperty(value) + "'");
}
return serveFile(uri, header, myRootDir, true);
}
/**
* Serves file from homeDir and its' subdirectories (only). Uses only URI,
* ignores all headers and HTTP parameters.
*/
public Response serveFile(String uri, final Properties header,
final File homeDir, final boolean allowDirectoryListing) {
Response res = null;
// Make sure we won't die of an exception later
if (!homeDir.isDirectory()) {
res = new Response(HTTP_INTERNALERROR, MIME_PLAINTEXT,
"INTERNAL ERRROR: serveFile(): given homeDir is not a directory.");
}
if (res == null) {
// Remove URL arguments
uri = uri.trim().replace(File.separatorChar, '/');
if (uri.indexOf('?') >= 0) {
uri = uri.substring(0, uri.indexOf('?'));
}
// Prohibit getting out of current directory
if (uri.startsWith("..") || uri.endsWith("..")
|| uri.indexOf("../") >= 0) {
res = new Response(HTTP_FORBIDDEN, MIME_PLAINTEXT,
"FORBIDDEN: Won't serve ../ for security reasons.");
}
}
File f = new File(homeDir, uri);
if (res == null && !f.exists()) {
res = new Response(HTTP_NOTFOUND, MIME_PLAINTEXT,
"Error 404, file not found.");
}
// List the directory, if necessary
if (res == null && f.isDirectory()) {
// Browsers get confused without '/' after the
// directory, send a redirect.
if (!uri.endsWith("/")) {
uri += "/";
res = new Response(HTTP_REDIRECT, MIME_HTML,
"<html><body>Redirected: <a href=\"" + uri + "\">"
+ uri + "</a></body></html>");
res.addHeader("Location", uri);
}
if (res == null) {
// First try index.html and index.htm
if (new File(f, "index.html").exists()) {
f = new File(homeDir, uri + "/index.html");
} else if (new File(f, "index.htm").exists()) {
f = new File(homeDir, uri + "/index.htm");
} else if (allowDirectoryListing && f.canRead()) {
final String[] files = f.list();
String msg = "<html><body><h1>Directory " + uri
+ "</h1><br/>";
if (uri.length() > 1) {
final String u = uri.substring(0, uri.length() - 1);
final int slash = u.lastIndexOf('/');
if (slash >= 0 && slash < u.length()) {
msg += "<b><a href=\""
+ uri.substring(0, slash + 1)
+ "\">..</a></b><br/>";
}
}
if (files != null) {
for (int i = 0; i < files.length; ++i) {
final File curFile = new File(f, files[i]);
final boolean dir = curFile.isDirectory();
if (dir) {
msg += "<b>";
files[i] += "/";
}
msg += "<a href=\"" + encodeUri(uri + files[i])
+ "\">" + files[i] + "</a>";
// Show file size
if (curFile.isFile()) {
final long len = curFile.length();
msg += " <font size=2>(";
if (len < 1024) {
msg += len + " bytes";
} else if (len < 1024 * 1024) {
msg += len / 1024 + "." + len % 1024 / 10
% 100 + " KB";
} else {
msg += len / (1024 * 1024) + "." + len
% (1024 * 1024) / 10 % 100 + " MB";
}
msg += ")</font>";
}
msg += "<br/>";
if (dir) {
msg += "</b>";
}
}
}
msg += "</body></html>";
res = new Response(HTTP_OK, MIME_HTML, msg);
} else {
res = new Response(HTTP_FORBIDDEN, MIME_PLAINTEXT,
"FORBIDDEN: No directory listing.");
}
}
}
try {
if (res == null) {
// Get MIME type from file name extension, if possible
String mime = null;
final int dot = f.getCanonicalPath().lastIndexOf('.');
if (dot >= 0) {
mime = (String) theMimeTypes.get(f.getCanonicalPath()
.substring(dot + 1).toLowerCase(Locale.ENGLISH));
}
if (mime == null) {
mime = MIME_DEFAULT_BINARY;
}
// Calculate etag
final String etag = Integer.toHexString((f.getAbsolutePath()
+ f.lastModified() + "" + f.length()).hashCode());
// Support (simple) skipping:
long startFrom = 0;
long endAt = -1;
String range = header.getProperty("range");
if (range != null) {
if (range.startsWith("bytes=")) {
range = range.substring("bytes=".length());
final int minus = range.indexOf('-');
try {
if (minus > 0) {
startFrom = Long.parseLong(range.substring(0,
minus));
endAt = Long.parseLong(range
.substring(minus + 1));
}
} catch (final NumberFormatException nfe) {
}
}
}
// Change return code and add Content-Range header when skipping
// is requested
final long fileLen = f.length();
if (range != null && startFrom >= 0) {
if (startFrom >= fileLen) {
res = new Response(HTTP_RANGE_NOT_SATISFIABLE,
MIME_PLAINTEXT, "");
res.addHeader("Content-Range", "bytes 0-0/" + fileLen);
if (mime.startsWith("application/")) {
res.addHeader("Content-Disposition",
"attachment; filename=\"" + f.getName()
+ "\"");
}
res.addHeader("ETag", etag);
} else {
if (endAt < 0) {
endAt = fileLen - 1;
}
long newLen = endAt - startFrom + 1;
if (newLen < 0) {
newLen = 0;
}
final long dataLen = newLen;
final FileInputStream fis = new FileInputStream(f) {
@Override
public int available() throws IOException {
return (int) dataLen;
}
};
fis.skip(startFrom);
res = new Response(HTTP_PARTIALCONTENT, mime, fis);
res.addHeader("Content-Length", "" + dataLen);
res.addHeader("Content-Range", "bytes " + startFrom
+ "-" + endAt + "/" + fileLen);
if (mime.startsWith("application/")) {
res.addHeader("Content-Disposition",
"attachment; filename=\"" + f.getName()
+ "\"");
}
res.addHeader("ETag", etag);
}
} else {
if (etag.equals(header.getProperty("if-none-match"))) {
res = new Response(HTTP_NOTMODIFIED, mime, "");
} else {
res = new Response(HTTP_OK, mime,
new FileInputStream(f));
res.addHeader("Content-Length", "" + fileLen);
if (mime.startsWith("application/")) {
res.addHeader("Content-Disposition",
"attachment; filename=\"" + f.getName()
+ "\"");
}
res.addHeader("ETag", etag);
}
}
}
} catch (final IOException ioe) {
res = new Response(HTTP_FORBIDDEN, MIME_PLAINTEXT,
"FORBIDDEN: Reading file failed.");
}
res.addHeader("Accept-Ranges", "bytes"); // Announce that the file
// server accepts partial
// content requestes
return res;
}
/**
* Stops the server.
*/
public void stop() {
try {
myServerSocket.close();
myThread.join();
} catch (final IOException ioe) {
} catch (final InterruptedException e) {
}
}
}