NanoHttpd 单文件
原链接：https://github.com/gseguin/NanoHTTPd/blob/master/src/NanoHTTPd.java
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
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.Vector;
import java.util.Hashtable;
import java.util.Locale;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.TimeZone;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
/**
* A simple, tiny, nicely embeddable HTTP 1.0 server in Java
*
* NanoHTTPd version 1.22,
* Copyright © 2001,2005-2011 Jarno Elonen ([email protected], http://iki.fi/elonen/)
* and Copyright © 2010 Konstantinos Togias ([email protected], http://ktogias.gr)
*
* Features + limitations:
*
* - Only one Java file
* - Java 1.1 compatible
* - Released as open source, Modified BSD licence
* - No fixed config files, logging, authorization etc. (Implement yourself if you need them.)
* - Supports parameter parsing of GET and POST methods
* - Supports both dynamic content and file serving
* - Supports file upload (since version 1.2, 2010)
* - Never caches anything
* - Doesn't limit bandwidth, request time or simultaneous connections
* - Default code serves files and shows all HTTP parameters and headers
* - File server supports directory listing, index.html and index.htm
* - File server does the 301 redirection trick for directories without '/'
* - File server supports simple skipping for files (continue download)
* - File server uses current directory as a web root
* - File server serves also very long files without memory overhead
* - Contains a built-in list of most common mime types
* - All header names are converted lowercase so they don't vary between browsers/clients
*
*
*
* Ways to use:
*
* - Run as a standalone app, serves files from current directory and shows requests
* - Subclass serve() and embed to your own program
* - Call serveFile() from serve() with your own base directory
*
*
*
* See the end of the source file for distribution license
* (Modified BSD licence)
*/
public class NanoHttpd {
// ==================================================
// API parts
// ==================================================
/**
* Override this to customize the server.
*
* (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(String uri, String method, Properties header, Properties parms, Properties files) {
System.out.println(method + " '" + uri + "' ");
Enumeration e = header.propertyNames();
while (e.hasMoreElements()) {
String value = (String) e.nextElement();
System.out.println(" HDR: '" + value + "' = '" +
header.getProperty(value) + "'");
}
e = parms.propertyNames();
while (e.hasMoreElements()) {
String value = (String) e.nextElement();
System.out.println(" PRM: '" + value + "' = '" +
parms.getProperty(value) + "'");
}
e = files.propertyNames();
while (e.hasMoreElements()) {
String value = (String) e.nextElement();
System.out.println(" UPLOADED: '" + value + "' = '" +
files.getProperty(value) + "'");
}
return serveFile(uri, header, new File("."), true);
}
/**
* HTTP response.
* Return one of these from serve().
*/
public class Response {
/**
* Default constructor: response = HTTP_OK, data = mime = 'null'
*/
public Response() {
this.status = HTTP_OK;
}
/**
* Basic constructor.
*/
public Response(String status, String mimeType, InputStream data) {
this.status = status;
this.mimeType = mimeType;
this.data = data;
}
/**
* Convenience method that makes an InputStream out of
* given text.
*/
public Response(String status, String mimeType, String txt) {
this.status = status;
this.mimeType = mimeType;
try {
this.data = new ByteArrayInputStream(txt.getBytes("UTF-8"));
} catch (java.io.UnsupportedEncodingException uee) {
uee.printStackTrace();
}
}
/**
* Adds given line to the header.
*/
public void addHeader(String name, String value) {
header.put(name, value);
}
/**
* 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();
}
/**
* Some HTTP response status codes
*/
public static final String
HTTP_OK = "200 OK",
HTTP_REDIRECT = "301 Moved Permanently",
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 a HTTP server to given port.
* Throws an IOException if the socket is already in use
*/
public NanoHttpd(int port) throws IOException {
myTcpPort = port;
myServerSocket = new ServerSocket(myTcpPort);
myThread = new Thread(new Runnable() {
public void run() {
try {
while (true)
new HTTPSession(myServerSocket.accept());
} catch (IOException ioe) {
}
}
});
myThread.setDaemon(true);
myThread.start();
}
/**
* Stops the server.
*/
public void stop() {
try {
myServerSocket.close();
myThread.join();
} catch (IOException ioe) {
} catch (InterruptedException e) {
}
}
/**
* Starts as a standalone file server and waits for Enter.
*/
// public static void main(String[] args) {
// System.out.println("NanoHTTPd 1.22 (C) 2001,2005-2011 Jarno Elonen and (C) 2010 Konstantinos Togias\n" +
// "(Command line options: [port] [--licence])\n");
//
// // Show licence if requested
// int lopt = -1;
// for (int i = 0; i < args.length; ++i)
// if (args[i].toLowerCase().endsWith("licence")) {
// lopt = i;
// System.out.println(LICENCE + "\n");
// break;
// }
//
// // Change port if requested
// int port = 80;
// if (args.length > 0 && lopt != 0)
// port = Integer.parseInt(args[0]);
//
// try {
// new NanoHttpd(port);
// } catch (IOException ioe) {
// System.err.println("Couldn't start server:\n" + ioe);
// System.exit(-1);
// }
//
// System.out.println("Now serving files in port " + port + " from \"" +
// new File("").getAbsolutePath() + "\"");
// while (true) {
// try {
// Thread.sleep(500);
// } catch (InterruptedException e) {
// e.printStackTrace();
// }
// }
// }
/**
* Handles one session, i.e. parses the HTTP request
* and returns the response.
*/
private class HTTPSession implements Runnable {
public HTTPSession(Socket s) {
mySocket = s;
Thread t = new Thread(this);
t.setDaemon(true);
t.start();
}
public void run() {
try {
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.
int bufsize = 8192;
byte[] buf = new byte[bufsize];
int rlen = is.read(buf, 0, bufsize);
if (rlen <= 0) return;
// Create a BufferedReader for parsing the header.
ByteArrayInputStream hbis = new ByteArrayInputStream(buf, 0, rlen);
BufferedReader hin = new BufferedReader(new InputStreamReader(hbis));
Properties pre = new Properties();
Properties parms = new Properties();
Properties header = new Properties();
Properties files = new Properties();
// Decode the header into parms and header java properties
decodeHeader(hin, pre, parms, header);
String method = pre.getProperty("method");
String uri = pre.getProperty("uri");
long size = 0x7FFFFFFFFFFFFFFFl;
String contentLength = header.getProperty("content-length");
if (contentLength != null) {
try {
size = Integer.parseInt(contentLength);
} catch (NumberFormatException ex) {
}
}
// We are looking for the byte separating header from body.
// It must be the last byte of the first two sequential new lines.
int splitbyte = 0;
boolean sbfound = false;
while (splitbyte < rlen) {
if (buf[splitbyte] == '\r' && buf[++splitbyte] == '\n' && buf[++splitbyte] == '\r' && buf[++splitbyte] == '\n') {
sbfound = true;
break;
}
splitbyte++;
}
splitbyte++;
// Write the part of body already read to ByteArrayOutputStream f
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 sends only the headers even if
// there is data for the body. So 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 + 1;
else if (!sbfound || 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 []
byte[] fbuf = f.toByteArray();
// Create a BufferedReader for easily reading it as string.
ByteArrayInputStream bin = new ByteArrayInputStream(fbuf);
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 = "";
String contentTypeHeader = header.getProperty("content-type");
StringTokenizer 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");
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();
String boundary = st.nextToken();
decodeMultipartData(boundary, fbuf, in, parms, files);
} else {
// Handle application/x-www-form-urlencoded
String postLine = "";
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);
}
}
// Ok, now do the serve()
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();
if (method.equalsIgnoreCase("GET")) {
if (parms.getProperty("exit") != null) {
System.exit(0);
}
}
} catch (IOException ioe) {
try {
sendError(HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
} catch (Throwable t) {
}
} catch (InterruptedException ie) {
// Thrown by sendError, ignore and exit the thread.
}
}
/**
* Decodes the sent headers and loads the data into
* java Properties' key - value pairs
*/
private void decodeHeader(BufferedReader in, Properties pre, Properties parms, Properties header)
throws InterruptedException {
try {
// Read the request line
String inLine = in.readLine();
if (inLine == null) return;
StringTokenizer st = new StringTokenizer(inLine);
if (!st.hasMoreTokens())
sendError(HTTP_BADREQUEST, "BAD REQUEST: Syntax error. Usage: GET /example/file.html");
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
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) {
int p = line.indexOf(':');
if (p >= 0)
header.put(line.substring(0, p).trim().toLowerCase(), line.substring(p + 1).trim());
line = in.readLine();
}
}
pre.put("uri", uri);
} catch (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(String boundary, byte[] fbuf, BufferedReader in, Properties parms, Properties files)
throws InterruptedException {
try {
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++;
Properties item = new Properties();
mpline = in.readLine();
while (mpline != null && mpline.trim().length() > 0) {
int p = mpline.indexOf(':');
if (p != -1)
item.put(mpline.substring(0, p).trim().toLowerCase(), mpline.substring(p + 1).trim());
mpline = in.readLine();
}
if (mpline != null) {
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");
}
StringTokenizer st = new StringTokenizer(contentDisposition, "; ");
Properties disposition = new Properties();
while (st.hasMoreTokens()) {
String token = st.nextToken();
int p = token.indexOf('=');
if (p != -1)
disposition.put(token.substring(0, p).trim().toLowerCase(), 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) {
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");
int offset = stripMultipartHeaders(fbuf, bpositions[boundarycount - 2]);
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 (IOException ioe) {
sendError(HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
}
}
/**
* Find the byte positions where multipart boundaries start.
*/
public int[] getBoundaryPositions(byte[] b, byte[] boundary) {
int matchcount = 0;
int matchbyte = -1;
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;
}
}
int[] ret = new int[matchbytes.size()];
for (int i = 0; i < ret.length; i++) {
ret[i] = ((Integer) matchbytes.elementAt(i)).intValue();
}
return ret;
}
/**
* 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(byte[] b, int offset, int len) {
String path = "";
if (len > 0) {
String tmpdir = System.getProperty("java.io.tmpdir");
try {
File temp = File.createTempFile("NanoHTTPd", "", new File(tmpdir));
OutputStream fstream = new FileOutputStream(temp);
fstream.write(b, offset, len);
fstream.close();
path = temp.getAbsolutePath();
} catch (Exception e) { // Catch exception if any
System.err.println("Error: " + e.getMessage());
}
}
return path;
}
/**
* It returns the offset separating multipart file headers
* from the file's data.
*/
private int stripMultipartHeaders(byte[] b, 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;
}
/**
* Decodes the percent encoding scheme.
* For example: "an+example%20string" -> "an example string"
*/
private String decodePercent(String str) throws InterruptedException {
try {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < str.length(); i++) {
char c = str.charAt(i);
switch (c) {
case '+':
sb.append(' ');
break;
case '%':
sb.append((char) Integer.parseInt(str.substring(i + 1, i + 3), 16));
i += 2;
break;
default:
sb.append(c);
break;
}
}
return sb.toString();
} catch (Exception e) {
sendError(HTTP_BADREQUEST, "BAD REQUEST: Bad percent-encoding.");
return null;
}
}
/**
* 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(String parms, Properties p)
throws InterruptedException {
if (parms == null)
return;
StringTokenizer st = new StringTokenizer(parms, "&");
while (st.hasMoreTokens()) {
String e = st.nextToken();
int sep = e.indexOf('=');
p.put(
decodePercent((sep >= 0) ? e.substring(0, sep) : e).trim(),
(sep >= 0) ? decodePercent(e.substring(sep + 1)) : ""
);
}
}
/**
* Returns an error message as a HTTP response and
* throws InterruptedException to stop further request processing.
*/
private void sendError(String status, 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(String status, String mime, Properties header, InputStream data) {
try {
if (status == null)
throw new Error("sendResponse(): Status can't be null.");
OutputStream out = mySocket.getOutputStream();
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) {
Enumeration e = header.keys();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
String value = header.getProperty(key);
pw.print(key + ": " + value + "\r\n");
}
}
pw.print("\r\n");
pw.flush();
if (data != null) {
byte[] buff = new byte[2048];
while (true) {
int read = data.read(buff, 0, 2048);
if (read <= 0)
break;
out.write(buff, 0, read);
}
}
out.flush();
out.close();
if (data != null)
data.close();
} catch (IOException ioe) {
// Couldn't write? No can do.
try {
mySocket.close();
} catch (Throwable t) {
}
}
}
private Socket mySocket;
}
/**
* URL-encodes everything between "/"-characters.
* Encodes spaces as '%20' instead of '+'.
*/
private String encodeUri(String uri) {
String newUri = "";
StringTokenizer st = new StringTokenizer(uri, "/ ", true);
while (st.hasMoreTokens()) {
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;
}
private int myTcpPort;
private final ServerSocket myServerSocket;
private Thread myThread;
// ==================================================
// File server code
// ==================================================
/**
* Serves file from homeDir and its' subdirectories (only).
* Uses only URI, ignores all headers and HTTP parameters.
*/
public Response serveFile(String uri, Properties header, File homeDir,
boolean allowDirectoryListing) {
// Make sure we won't die of an exception later
if (!homeDir.isDirectory())
return new Response(HTTP_INTERNALERROR, MIME_PLAINTEXT,
"INTERNAL ERRROR: serveFile(): given homeDir is not a directory.");
// 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)
return new Response(HTTP_FORBIDDEN, MIME_PLAINTEXT,
"FORBIDDEN: Won't serve ../ for security reasons.");
File f = new File(homeDir, uri);
if (!f.exists())
return new Response(HTTP_NOTFOUND, MIME_PLAINTEXT,
"Error 404, file not found.");
// List the directory, if necessary
if (f.isDirectory()) {
// Browsers get confused without '/' after the
// directory, send a redirect.
if (!uri.endsWith("/")) {
uri += "/";
Response r = new Response(HTTP_REDIRECT, MIME_HTML,
"
Redirected: " +
uri + "");
r.addHeader("Location", uri);
return r;
}
// 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");
// No index file, list the directory
else if (allowDirectoryListing) {
String[] files = f.list();
String msg = "Directory " + uri + "
";
if (uri.length() > 1) {
String u = uri.substring(0, uri.length() - 1);
int slash = u.lastIndexOf('/');
if (slash >= 0 && slash < u.length())
msg += "..
";
}
for (int i = 0; i < files.length; ++i) {
File curFile = new File(f, files[i]);
boolean dir = curFile.isDirectory();
if (dir) {
msg += "";
files[i] += "/";
}
msg += "" +
files[i] + "";
// Show file size
if (curFile.isFile()) {
long len = curFile.length();
msg += " (";
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 += ")";
}
msg += "
";
if (dir) msg += "";
}
msg += "";
return new Response(HTTP_OK, MIME_HTML, msg);
} else {
return new Response(HTTP_FORBIDDEN, MIME_PLAINTEXT,
"FORBIDDEN: No directory listing.");
}
}
try {
// Get MIME type from file name extension, if possible
String mime = null;
int dot = f.getCanonicalPath().lastIndexOf('.');
if (dot >= 0)
mime = (String) theMimeTypes.get(f.getCanonicalPath().substring(dot + 1).toLowerCase());
if (mime == null)
mime = MIME_DEFAULT_BINARY;
// Support (simple) skipping:
long startFrom = 0;
String range = header.getProperty("range");
if (range != null) {
if (range.startsWith("bytes=")) {
range = range.substring("bytes=".length());
int minus = range.indexOf('-');
if (minus > 0)
range = range.substring(0, minus);
try {
startFrom = Long.parseLong(range);
} catch (NumberFormatException nfe) {
}
}
}
FileInputStream fis = new FileInputStream(f);
fis.skip(startFrom);
Response r = new Response(HTTP_OK, mime, fis);
r.addHeader("Content-length", "" + (f.length() - startFrom));
r.addHeader("Content-range", "" + startFrom + "-" +
(f.length() - 1) + "/" + f.length());
return r;
} catch (IOException ioe) {
return new Response(HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: Reading file failed.");
}
}
/**
* Hashtable mapping (String)FILENAME_EXTENSION -> (String)MIME_TYPE
*/
private static Hashtable theMimeTypes = new Hashtable();
static {
StringTokenizer st = new StringTokenizer(
"css text/css " +
"js text/javascript " +
"htm text/html " +
"html text/html " +
"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 " +
"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());
}
/**
* 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) 2001,2005-2011 by Jarno Elonen \n" +
"and Copyright (C) 2010 by Konstantinos Togias \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.";
}