());
}
String propertyValue = (sep >= 0) ? decodePercent(e.substring(sep + 1)) : null;
if (propertyValue != null) {
parms.get(propertyName).add(propertyValue);
}
}
}
return parms;
}
/**
* HTTP Request methods, with the ability to decode a String
back to its enum value.
*/
public enum Method {
GET, PUT, POST, DELETE, HEAD;
static Method lookup(String method) {
for (Method m : Method.values()) {
if (m.toString().equalsIgnoreCase(method)) {
return m;
}
}
return null;
}
}
// ------------------------------------------------------------------------------- //
//
// Threading Strategy.
//
// ------------------------------------------------------------------------------- //
/**
* Pluggable strategy for asynchronously executing requests.
*/
private AsyncRunner asyncRunner;
/**
* Pluggable strategy for asynchronously executing requests.
* @param asyncRunner new strategy for handling threads.
*/
public void setAsyncRunner(AsyncRunner asyncRunner) {
this.asyncRunner = asyncRunner;
}
/**
* Pluggable strategy for asynchronously executing requests.
*/
public interface AsyncRunner {
void exec(Runnable code);
}
/**
* Default threading strategy for NanoHttpd.
*
* By default, the server spawns a new Thread for every incoming request. These are set
* to daemon status, and named according to the request number. The name is
* useful when profiling the application.
*/
public static class DefaultAsyncRunner implements AsyncRunner {
private long requestCount;
@Override
public void exec(Runnable code) {
++requestCount;
Thread t = new Thread(code);
t.setDaemon(true);
t.setName("NanoHttpd Request Processor (#" + requestCount + ")");
t.start();
}
}
// ------------------------------------------------------------------------------- //
//
// Temp file handling strategy.
//
// ------------------------------------------------------------------------------- //
/**
* Pluggable strategy for creating and cleaning up temporary files.
*/
private TempFileManagerFactory tempFileManagerFactory;
/**
* Pluggable strategy for creating and cleaning up temporary files.
* @param tempFileManagerFactory new strategy for handling temp files.
*/
public void setTempFileManagerFactory(TempFileManagerFactory tempFileManagerFactory) {
this.tempFileManagerFactory = tempFileManagerFactory;
}
/**
* Factory to create temp file managers.
*/
public interface TempFileManagerFactory {
TempFileManager create();
}
/**
* Temp file manager.
*
* Temp file managers are created 1-to-1 with incoming requests, to create and cleanup
* temporary files created as a result of handling the request.
*/
public interface TempFileManager {
TempFile createTempFile() throws Exception;
void clear();
}
/**
* A temp file.
*
* Temp files are responsible for managing the actual temporary storage and cleaning
* themselves up when no longer needed.
*/
public interface TempFile {
OutputStream open() throws Exception;
void delete() throws Exception;
String getName();
}
/**
* Default strategy for creating and cleaning up temporary files.
*/
private class DefaultTempFileManagerFactory implements TempFileManagerFactory {
@Override
public TempFileManager create() {
return new DefaultTempFileManager();
}
}
/**
* Default strategy for creating and cleaning up temporary files.
*
* This class stores its files in the standard location (that is,
* wherever java.io.tmpdir
points to). Files are added
* to an internal list, and deleted when no longer needed (that is,
* when clear()
is invoked at the end of processing a
* request).
*/
public static class DefaultTempFileManager implements TempFileManager {
private final String tmpdir;
private final List tempFiles;
public DefaultTempFileManager() {
tmpdir = System.getProperty("java.io.tmpdir");
tempFiles = new ArrayList();
}
@Override
public TempFile createTempFile() throws Exception {
DefaultTempFile tempFile = new DefaultTempFile(tmpdir);
tempFiles.add(tempFile);
return tempFile;
}
@Override
public void clear() {
for (TempFile file : tempFiles) {
try {
file.delete();
} catch (Exception ignored) {
}
}
tempFiles.clear();
}
}
/**
* Default strategy for creating and cleaning up temporary files.
*
* [>By default, files are created by File.createTempFile()
in
* the directory specified.
*/
public static class DefaultTempFile implements TempFile {
private File file;
private OutputStream fstream;
public DefaultTempFile(String tempdir) throws IOException {
file = File.createTempFile("NanoHTTPD-", "", new File(tempdir));
fstream = new FileOutputStream(file);
}
@Override
public OutputStream open() throws Exception {
return fstream;
}
@Override
public void delete() throws Exception {
if (fstream != null) {
fstream.close();
}
file.delete();
}
@Override
public String getName() {
return file.getAbsolutePath();
}
}
// ------------------------------------------------------------------------------- //
/**
* HTTP response. Return one of these from serve().
*/
public static class Response {
/**
* HTTP status code after processing, e.g. "200 OK", HTTP_OK
*/
private Status status;
/**
* MIME type of content, e.g. "text/html"
*/
private String mimeType;
/**
* Data of the response, may be null.
*/
private InputStream data;
/**
* Headers for the HTTP response. Use addHeader() to add lines.
*/
private Map header = new HashMap();
/**
* The request method that spawned this response.
*/
private Method requestMethod;
/**
* Default constructor: response = HTTP_OK, mime = MIME_HTML and your supplied message
*/
public Response(String msg) {
this(Status.OK, MIME_HTML, msg);
}
/**
* Basic constructor.
*/
public Response(Status 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(Status status, String mimeType, String txt) {
this.status = status;
this.mimeType = mimeType;
try {
this.data = txt != null ? new ByteArrayInputStream(txt.getBytes("UTF-8")) : null;
} catch (java.io.UnsupportedEncodingException uee) {
uee.printStackTrace();
}
}
public static void error(OutputStream outputStream, Status error, String message) {
new Response(error, MIME_PLAINTEXT, message).send(outputStream);
}
/**
* Adds given line to the header.
*/
public void addHeader(String name, String value) {
header.put(name, value);
}
/**
* Sends given response to the socket.
*/
private void send(OutputStream outputStream) {
String mime = mimeType;
SimpleDateFormat gmtFrmt = new SimpleDateFormat("E, d MMM yyyy HH:mm:ss 'GMT'", Locale.US);
gmtFrmt.setTimeZone(TimeZone.getTimeZone("GMT"));
try {
if (status == null) {
throw new Error("sendResponse(): Status can't be null.");
}
PrintWriter pw = new PrintWriter(outputStream);
pw.print("HTTP/1.0 " + status.getDescription() + " \r\n");
if (mime != null) {
pw.print("Content-Type: " + mime + "\r\n");
}
if (header == null || header.get("Date") == null) {
pw.print("Date: " + gmtFrmt.format(new Date()) + "\r\n");
}
if (header != null) {
for (String key : header.keySet()) {
String value = header.get(key);
pw.print(key + ": " + value + "\r\n");
}
}
pw.print("\r\n");
pw.flush();
if (requestMethod != Method.HEAD && data != null) {
int pending = data.available(); // This is to support partial sends, see serveFile()
int BUFFER_SIZE = 16 * 1024;
byte[] buff = new byte[BUFFER_SIZE];
while (pending > 0) {
int read = data.read(buff, 0, ((pending > BUFFER_SIZE) ? BUFFER_SIZE : pending));
if (read <= 0) {
break;
}
outputStream.write(buff, 0, read);
pending -= read;
}
}
outputStream.flush();
outputStream.close();
if (data != null)
data.close();
} catch (IOException ioe) {
// Couldn't write? No can do.
}
}
public Status getStatus() {
return status;
}
public void setStatus(Status status) {
this.status = status;
}
public String getMimeType() {
return mimeType;
}
public void setMimeType(String mimeType) {
this.mimeType = mimeType;
}
public InputStream getData() {
return data;
}
public void setData(InputStream data) {
this.data = data;
}
public Method getRequestMethod() {
return requestMethod;
}
public void setRequestMethod(Method requestMethod) {
this.requestMethod = requestMethod;
}
/**
* Some HTTP response status codes
*/
public enum Status {
OK(200, "OK"), CREATED(201, "Created"), ACCEPTED(202, "Accepted"), NO_CONTENT(204, "No Content"), PARTIAL_CONTENT(206, "Partial Content"), REDIRECT(301,
"Moved Permanently"), NOT_MODIFIED(304, "Not Modified"), BAD_REQUEST(400, "Bad Request"), UNAUTHORIZED(401,
"Unauthorized"), FORBIDDEN(403, "Forbidden"), NOT_FOUND(404, "Not Found"), RANGE_NOT_SATISFIABLE(416,
"Requested Range Not Satisfiable"), INTERNAL_ERROR(500, "Internal Server Error");
private final int requestStatus;
private final String description;
Status(int requestStatus, String description) {
this.requestStatus = requestStatus;
this.description = description;
}
public int getRequestStatus() {
return this.requestStatus;
}
public String getDescription() {
return "" + this.requestStatus + " " + description;
}
}
}
/**
* Handles one session, i.e. parses the HTTP request and returns the response.
*/
protected class HTTPSession implements Runnable {
public static final int BUFSIZE = 8192;
private final TempFileManager tempFileManager;
private final InputStream inputStream;
private final OutputStream outputStream;
public HTTPSession(TempFileManager tempFileManager, InputStream inputStream, OutputStream outputStream) {
this.tempFileManager = tempFileManager;
this.inputStream = inputStream;
this.outputStream = outputStream;
}
@Override
public void run() {
RandomAccessFile randomAccessFile = null;
try {
if (inputStream == 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!
byte[] buf = new byte[BUFSIZE];
int splitbyte = 0;
int rlen = 0;
{
int read = inputStream.read(buf, 0, BUFSIZE);
while (read > 0) {
rlen += read;
splitbyte = findHeaderEnd(buf, rlen);
if (splitbyte > 0)
break;
read = inputStream.read(buf, rlen, BUFSIZE - rlen);
}
}
// Create a BufferedReader for parsing the header.
BufferedReader hin = new BufferedReader(new InputStreamReader(new ByteArrayInputStream(buf, 0, rlen)));
Map pre = new HashMap();
Map parms = new HashMap();
Map header = new HashMap();
Map files = new HashMap();
// Decode the header into parms and header java properties
decodeHeader(hin, pre, parms, header);
Method method = Method.lookup(pre.get("method"));
if (method == null) {
Response.error(outputStream, Response.Status.BAD_REQUEST, "BAD REQUEST: Syntax error.");
throw new InterruptedException();
}
String uri = pre.get("uri");
long size = extractContentLength(header);
// Write the part of body already read to ByteArrayOutputStream f
randomAccessFile = getTmpBucket();
if (splitbyte < rlen) {
randomAccessFile.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 + 1;
} 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 = inputStream.read(buf, 0, 512);
size -= rlen;
if (rlen > 0) {
randomAccessFile.write(buf, 0, rlen);
}
}
// Get the raw body as a byte []
ByteBuffer fbuf = randomAccessFile.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, randomAccessFile.length());
randomAccessFile.seek(0);
// Create a BufferedReader for easily reading it as string.
InputStream bin = new FileInputStream(randomAccessFile.getFD());
BufferedReader in = new BufferedReader(new InputStreamReader(bin));
// If the method is POST, there may be parameters
// in data section, too, read it:
if (Method.POST.equals(method)) {
String contentType = "";
String contentTypeHeader = header.get("content-type");
StringTokenizer st = null;
if (contentTypeHeader != null) {
st = new StringTokenizer(contentTypeHeader, ",; ");
if (st.hasMoreTokens()) {
contentType = st.nextToken();
}
}
if ("multipart/form-data".equalsIgnoreCase(contentType)) {
// Handle multipart/form-data
if (!st.hasMoreTokens()) {
Response.error(outputStream, Response.Status.BAD_REQUEST, "BAD REQUEST: Content type is multipart/form-data but boundary missing. Usage: GET /example/file.html");
throw new InterruptedException();
}
String boundaryStartString = "boundary=";
int boundaryContentStart = contentTypeHeader.indexOf(boundaryStartString) + boundaryStartString.length();
String boundary = contentTypeHeader.substring(boundaryContentStart, contentTypeHeader.length());
if (boundary.startsWith("\"") && boundary.startsWith("\"")) {
boundary = boundary.substring(1, boundary.length() - 1);
}
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);
}
} else if (Method.PUT.equals(method)) {
files.put("content", saveTmpFile(fbuf, 0, fbuf.limit()));
}
// Ok, now do the serve()
Response r = serve(uri, method, header, parms, files);
if (r == null) {
Response.error(outputStream, Response.Status.INTERNAL_ERROR, "SERVER INTERNAL ERROR: Serve() returned a null response.");
throw new InterruptedException();
} else {
r.setRequestMethod(method);
r.send(outputStream);
}
in.close();
inputStream.close();
} catch (IOException ioe) {
try {
Response.error(outputStream, Response.Status.INTERNAL_ERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
throw new InterruptedException();
} catch (Throwable ignored) {
}
} catch (InterruptedException ie) {
// Thrown by sendError, ignore and exit the thread.
} finally {
if (randomAccessFile != null) {
try {
randomAccessFile.close();
} catch (IOException e) {
}
}
tempFileManager.clear();
}
}
private long extractContentLength(Map header) {
long size = 0x7FFFFFFFFFFFFFFFl;
String contentLength = header.get("content-length");
if (contentLength != null) {
try {
size = Integer.parseInt(contentLength);
} catch (NumberFormatException ex) {
ex.printStackTrace();
}
}
return size;
}
/**
* Decodes the sent headers and loads the data into Key/value pairs
*/
private void decodeHeader(BufferedReader in, Map pre, Map parms, Map header)
throws InterruptedException {
try {
// Read the request line
String inLine = in.readLine();
if (inLine == null) {
return;
}
StringTokenizer st = new StringTokenizer(inLine);
if (!st.hasMoreTokens()) {
Response.error(outputStream, Response.Status.BAD_REQUEST, "BAD REQUEST: Syntax error. Usage: GET /example/file.html");
throw new InterruptedException();
}
pre.put("method", st.nextToken());
if (!st.hasMoreTokens()) {
Response.error(outputStream, Response.Status.BAD_REQUEST, "BAD REQUEST: Missing URI. Usage: GET /example/file.html");
throw new InterruptedException();
}
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) {
Response.error(outputStream, Response.Status.INTERNAL_ERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
throw new InterruptedException();
}
}
/**
* Decodes the Multipart Body data and put it into Key/Value pairs.
*/
private void decodeMultipartData(String boundary, ByteBuffer fbuf, BufferedReader in, Map parms,
Map files) throws InterruptedException {
try {
int[] bpositions = getBoundaryPositions(fbuf, boundary.getBytes());
int boundarycount = 1;
String mpline = in.readLine();
while (mpline != null) {
if (!mpline.contains(boundary)) {
Response.error(outputStream, Response.Status.BAD_REQUEST, "BAD REQUEST: Content type is multipart/form-data but next chunk does not start with boundary. Usage: GET /example/file.html");
throw new InterruptedException();
}
boundarycount++;
Map item = new HashMap();
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.get("content-disposition");
if (contentDisposition == null) {
Response.error(outputStream, Response.Status.BAD_REQUEST, "BAD REQUEST: Content type is multipart/form-data but no content-disposition info found. Usage: GET /example/file.html");
throw new InterruptedException();
}
StringTokenizer st = new StringTokenizer(contentDisposition, "; ");
Map disposition = new HashMap();
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.get("name");
pname = pname.substring(1, pname.length() - 1);
String value = "";
if (item.get("content-type") == null) {
while (mpline != null && !mpline.contains(boundary)) {
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) {
Response.error(outputStream, Response.Status.INTERNAL_ERROR, "Error processing request");
throw new InterruptedException();
}
int offset = stripMultipartHeaders(fbuf, bpositions[boundarycount - 2]);
String path = saveTmpFile(fbuf, offset, bpositions[boundarycount - 1] - offset - 4);
files.put(pname, path);
value = disposition.get("filename");
value = value.substring(1, value.length() - 1);
do {
mpline = in.readLine();
} while (mpline != null && !mpline.contains(boundary));
}
parms.put(pname, value);
}
}
} catch (IOException ioe) {
Response.error(outputStream, Response.Status.INTERNAL_ERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
throw new InterruptedException();
}
}
/**
* 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, 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(ByteBuffer b, byte[] boundary) {
int matchcount = 0;
int matchbyte = -1;
List matchbytes = new ArrayList();
for (int i=0; i 0) {
try {
TempFile tempFile = tempFileManager.createTempFile();
ByteBuffer src = b.duplicate();
FileChannel dest = new FileOutputStream(tempFile.getName()).getChannel();
src.position(offset).limit(offset + len);
dest.write(src.slice());
path = tempFile.getName();
} catch (Exception e) { // Catch exception if any
System.err.println("Error: " + e.getMessage());
}
}
return path;
}
private RandomAccessFile getTmpBucket() {
try {
TempFile tempFile = tempFileManager.createTempFile();
return new RandomAccessFile(tempFile.getName(), "rw");
} catch (Exception e) {
System.err.println("Error: " + e.getMessage());
}
return null;
}
/**
* It returns the offset separating multipart file headers from the file's data.
*/
private int stripMultipartHeaders(ByteBuffer b, int offset) {
int i;
for (i=offset; i p) {
if (parms == null) {
p.put(QUERY_STRING_PARAMETER, "");
return;
}
p.put(QUERY_STRING_PARAMETER, parms);
StringTokenizer st = new StringTokenizer(parms, "&");
while (st.hasMoreTokens()) {
String e = st.nextToken();
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(), "");
}
}
}
}
public final int getListeningPort() {
return myServerSocket == null ? -1 : myServerSocket.getLocalPort();
}
public final boolean wasStarted() {
return myServerSocket != null && myThread != null;
}
public final boolean isAlive() {
return wasStarted() && !myServerSocket.isClosed() && myThread.isAlive();
}
}