water.NanoHTTPD Maven / Gradle / Ivy
package water;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.EOFException;
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.PrintStream;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URLEncoder;
import java.util.Arrays;
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.regex.Matcher;
import java.util.regex.Pattern;
import water.api.RequestServer;
import water.api.StreamWriter;
import water.fvec.UploadFileVec;
import water.util.Log;
/**
* A simple, tiny, nicely embeddable HTTP 1.0 (partially 1.1) server in Java
*
* NanoHTTPD version 1.25,
* Copyright © 2001,2005-2012 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 (+ rudimentary PUT support in 1.25)
* - Supports both dynamic content and file serving
* - Supports file upload (since version 1.2, 2010)
* - Supports partial content (streaming)
* - Supports ETags
* - 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 supports partial content (streaming)
* - File server supports ETags
* - File server does the 301 redirection trick for directories without '/'
* - File server supports simple skipping for files (continue download)
* - 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 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 )
{
myOut.println( method + " '" + uri + "' " );
Enumeration e = header.propertyNames();
while ( e.hasMoreElements())
{
String value = (String)e.nextElement();
myOut.println( " HDR: '" + value + "' = '" +
header.getProperty( value ) + "'" );
}
e = parms.propertyNames();
while ( e.hasMoreElements())
{
String value = (String)e.nextElement();
myOut.println( " PRM: '" + value + "' = '" +
parms.getProperty( value ) + "'" );
}
return serveFile( uri, header, myRootDir, 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 e ) { Log.err(e); }
}
/**
* 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();
}
public class StreamResponse extends Response {
public StreamResponse(String status, String mimeType, StreamWriter streamWriter) {
this.status = status;
this.mimeType = mimeType;
this.streamWriter = streamWriter;
}
public StreamWriter streamWriter;
}
/**
* 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_UNAUTHORIZED = "401 Unauthorized",
HTTP_NOTFOUND = "404 Not Found",
HTTP_BADREQUEST = "400 Bad Request",
HTTP_TOOLONGREQUEST = "414 Request-URI Too Long",
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_JSON = "application/json",
MIME_DEFAULT_BINARY = "application/octet-stream",
MIME_XML = "text/xml";
// ==================================================
// Socket & server code
// ==================================================
/**
* Jetty supercedes Nano.
*/
public NanoHTTPD() {
myServerSocket = null;
}
/**
* Starts a HTTP server to given port.
* Throws an IOException if the socket is already in use
*/
public NanoHTTPD( ServerSocket socket, File wwwroot ) throws IOException {
myRootDir = wwwroot;
myServerSocket = socket;
myServerSocket.setReuseAddress(true);
myThread = new Thread(new Runnable() {
public void run() {
try {
while( true )
new HTTPSession( myServerSocket.accept());
} catch ( IOException e ) { }
}
}, "NanoHTTPD Thread");
myThread.setDaemon( true );
myThread.start();
}
/**
* Stops the server.
*/
public void stop() {
try {
myServerSocket.close();
myThread.join();
} catch ( IOException | InterruptedException e ) {
}
}
/**
* Starts as a standalone file server and waits for Enter.
*/
public static void main( String[] args ) {
myOut.println( "NanoHTTPD 1.25 (C) 2001,2005-2011 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 done with header
nl = true;
} else if( b != '\r' ) nl = false;
if (rlen == buf.length) buf = Arrays.copyOf(buf, 2*buf.length);
}
if (rlen == MAX_HEADER_BUFFER_SIZE)
sendError(HTTP_TOOLONGREQUEST, "Requested URL is too long!");
// 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();
// 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++;
is.reset();
is.skip(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;
// If the method is POST, there may be parameters
// in data section, too, read it:
BufferedReader in = new BufferedReader( new InputStreamReader(is));
if ( method.equalsIgnoreCase( "POST" ))
{
String contentType = "";
String contentTypeHeader = header.getProperty("content-type");
if (contentTypeHeader == null)
contentTypeHeader = "";
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();
String paddedMethod = String.format("%-6s", method);
Log.info("Method: " + paddedMethod, ", URI: " + uri + ", route: " + "(special case)" + ", parms: " + parms);
RequestServer.alwaysLogRequest(uri, "POST", parms);
boolean handled = fileUpload(boundary, is, parms, uri);
if (handled) {
return;
}
} else {
// Handle application/x-www-form-urlencoded
String postLine = "";
if (size >= 0) {
//
// content-length is specified. Use it.
//
char pbuf[] = new char[4096];
long bytesRead = 0;
long bytesToRead = size;
StringBuilder sb = new StringBuilder();
while (bytesRead < bytesToRead) {
int n = in.read(pbuf);
if (n < 0) {
break;
}
else if (n == 0) {
// this is supposed to be blocking, so i don't know what this means.
// but it isn't good.
assert(false);
break;
}
bytesRead += n;
sb.append(pbuf, 0, n);
}
postLine = sb.toString();
}
else {
//
// The original path for x-www-form-urlencoded.
// Don't have content-length. Look for \r\n to stop the input.
//
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();
}
if (contentType.equalsIgnoreCase("application/json")) {
parms.put("_post_body", postLine); // JSON text; we'll deserialize later, e.g. into a subclass of ModelParametersSchema
} else {
decodeParms(postLine, parms);
}
}
}
// Ok, now do the serve()
Response r = serve( uri, method, header, parms );
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 ( IOException ioe ) {
try {
sendError( HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
} catch ( Throwable t ) { Log.err(t); }
} catch ( InterruptedException e ) {
// 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());
}
}
public String readLine(InputStream in) throws IOException {
StringBuilder sb = new StringBuilder();
byte[] mem = new byte[1024];
while (true) {
int sz = readBufOrLine(in,mem);
sb.append(new String(mem,0,sz));
if (sz < mem.length)
break;
if (mem[sz-1]=='\n')
break;
}
if (sb.length()==0)
return null;
String line = sb.toString();
if (line.endsWith("\r\n"))
line = line.substring(0,line.length()-2);
else if (line.endsWith("\n"))
line = line.substring(0,line.length()-1);
return line;
}
private int readBufOrLine(InputStream in, byte[] mem) throws IOException {
byte[] bb = new byte[1];
int sz = 0;
while (true) {
byte b;
byte b2;
if (sz==mem.length)
break;
try {
in.read(bb,0,1);
b = bb[0];
mem[sz++] = b;
} catch (EOFException e) {
break;
}
if (b == '\n')
break;
if (sz==mem.length)
break;
if (b == '\r') {
try {
in.read(bb,0,1);
b2 = bb[0];
mem[sz++] = b2;
} catch (EOFException e) {
break;
}
if (b2 == '\n')
break;
}
}
return sz;
}
private boolean validKeyName(String name) {
byte[] arr = name.getBytes();
for (byte b : arr) {
if (b == '"') return false;
if (b == '\\') return false;
}
return true;
}
private boolean fileUpload(String boundary, InputStream in, Properties parms, String uri) throws InterruptedException {
try {
String line = readLine(in);
int i = line.indexOf(boundary);
if (i!=2)
sendError( HTTP_BADREQUEST, "BAD REQUEST: Content type is multipart/form-data but next chunk does not start with boundary. Usage: GET /example/file.html" );
if (line.substring(i+boundary.length()).startsWith("--"))
return false;
// read the header
Properties item = new Properties();
line = readLine(in);
while ((line != null) && (line.trim().length()>0)) {
int p = line.indexOf(':');
if (p != -1)
item.put( line.substring(0,p).trim().toLowerCase(), line.substring(p+1).trim());
line = readLine(in);
}
// analyze the header
if( line!=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" );
{
String key = parms.getProperty("key");
boolean nps = Pattern.matches("/[^/]+/NodePersistentStorage.*", uri);
if (nps) {
Pattern p = Pattern.compile(".*NodePersistentStorage/([^/]+)/([^/]+)");
Matcher m = p.matcher(uri);
boolean b = m.matches();
if (!b) {
sendError(HTTP_BADREQUEST, "NodePersistentStorage URL malformed");
}
String categoryName = m.group(1);
String keyName = m.group(2);
H2O.getNPS().put(categoryName, keyName, new InputStreamWrapper(in, boundary.getBytes()));
long length = H2O.getNPS().get_length(categoryName, keyName);
String responsePayload = "{ " +
"\"category\" : " + "\"" + categoryName + "\", " +
"\"name\" : " + "\"" + keyName + "\", " +
"\"total_bytes\" : " + length + " " +
"}";
sendResponse(HTTP_OK, MIME_JSON, null, new ByteArrayInputStream(responsePayload.getBytes("UTF-8")));
return true;
}
}
{
String destination_key = parms.getProperty("destination_frame");
if (destination_key == null) {
destination_key = "upload" + Key.rand();
}
if (!validKeyName(destination_key)) {
sendError(HTTP_BADREQUEST, "Invalid key name, contains illegal characters");
}
boolean uploadFile = Pattern.matches("/PostFile", uri) || // no version
Pattern.matches("/[1-9][0-9]*/PostFile", uri) || // numbered version
Pattern.matches("/LATEST/PostFile", uri); // use LATEST
if (uploadFile) {
//
// Here is an example of how to upload a file from the command line.
//
// curl -v -F "file=@allyears2k_headers.zip" "http://localhost:54321/PostFile?key=a.zip"
//
// This call is handled as a POST request in method NanoHTTPD#fileUpload
//
// JSON Payload returned is:
// { "destination_key": "key_name", "total_bytes": nnn }
//
UploadFileVec.ReadPutStats stats = new UploadFileVec.ReadPutStats();
UploadFileVec.readPut(destination_key, new InputStreamWrapper(in, boundary.getBytes()), stats);
// TODO: Figure out how to marshal a response here Ray-style so that docs, etc. are generated properly.
String responsePayload = "{ \"destination_frame\": \"" + destination_key + "\", \"total_bytes\": " + stats.total_bytes + " }\n";
sendResponse(HTTP_OK, MIME_JSON, null, new ByteArrayInputStream(responsePayload.getBytes("UTF-8")));
return true;
}
}
sendError(HTTP_NOTFOUND, "(Attempt to upload data) URL not found");
}
}
catch (Exception e) {
sendError( HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: Exception: " + e.getMessage());
}
return false;
}
/**
* Decodes the percent encoding scheme.
* For example: "an+example%20string" -> "an example string"
*/
private String decodePercent( String str ) throws InterruptedException
{
try
{
StringBuilder sb = new StringBuilder();
for( int i=0; i0)
{
int read = data.read( buff, 0, ( (pending>theBufferSize) ? theBufferSize : pending ));
if (read <= 0) break;
out.write( buff, 0, read );
//pending -= read;
pending = data.available();
}
}
out.flush();
out.close();
if ( data != null )
data.close();
}
catch( IOException e ) {
Log.err(e);
// Couldn't write? No can do.
try { mySocket.close(); } catch( IOException ignore ) { }
}
if (H2O.getShutdownRequested()) {
H2O.shutdown(0);
}
}
private Socket mySocket;
}
private static final class InputStreamWrapper extends InputStream {
static final byte[] BOUNDARY_PREFIX = { '\r', '\n', '-', '-' };
final InputStream _wrapped;
final byte[] _boundary;
final byte[] _lookAheadBuf;
int _lookAheadLen;
public InputStreamWrapper(InputStream is, byte[] boundary) {
_wrapped = is;
_boundary = Arrays.copyOf(BOUNDARY_PREFIX, BOUNDARY_PREFIX.length + boundary.length);
System.arraycopy(boundary, 0, _boundary, BOUNDARY_PREFIX.length, boundary.length);
_lookAheadBuf = new byte[_boundary.length];
_lookAheadLen = 0;
}
@Override public void close() throws IOException { _wrapped.close(); }
@Override public int available() throws IOException { return _wrapped.available(); }
@Override public long skip(long n) throws IOException { return _wrapped.skip(n); }
@Override public void mark(int readlimit) { _wrapped.mark(readlimit); }
@Override public void reset() throws IOException { _wrapped.reset(); }
@Override public boolean markSupported() { return _wrapped.markSupported(); }
@Override public int read() throws IOException { throw new UnsupportedOperationException(); }
@Override public int read(byte[] b) throws IOException { return read(b, 0, b.length); }
@Override public int read(byte[] b, int off, int len) throws IOException {
if(_lookAheadLen == -1)
return -1;
int readLen = readInternal(b, off, len);
if (readLen != -1) {
int pos = findBoundary(b, off, readLen);
if (pos != -1) {
_lookAheadLen = -1;
return pos - off;
}
}
return readLen;
}
private int readInternal(byte b[], int off, int len) throws IOException {
if (len < _lookAheadLen ) {
System.arraycopy(_lookAheadBuf, 0, b, off, len);
_lookAheadLen -= len;
System.arraycopy(_lookAheadBuf, len, _lookAheadBuf, 0, _lookAheadLen);
return len;
}
if (_lookAheadLen > 0) {
System.arraycopy(_lookAheadBuf, 0, b, off, _lookAheadLen);
off += _lookAheadLen;
len -= _lookAheadLen;
int r = Math.max(_wrapped.read(b, off, len), 0) + _lookAheadLen;
_lookAheadLen = 0;
return r;
} else {
return _wrapped.read(b, off, len);
}
}
private int findBoundary(byte[] b, int off, int len) throws IOException {
int bidx = -1; // start index of boundary
int idx = 0; // actual index in boundary[]
for(int i = off; i < off+len; i++) {
if (_boundary[idx] != b[i]) { // reset
idx = 0;
bidx = -1;
}
if (_boundary[idx] == b[i]) {
if (idx == 0) bidx = i;
if (++idx == _boundary.length) return bidx; // boundary found
}
}
if (bidx != -1) { // it seems that there is boundary but we did not match all boundary length
assert _lookAheadLen == 0; // There should not be not read lookahead
_lookAheadLen = _boundary.length - idx;
int readLen = _wrapped.read(_lookAheadBuf, 0, _lookAheadLen);
if (readLen < _boundary.length - idx) { // There is not enough data to match boundary
_lookAheadLen = readLen;
return -1;
}
for (int i = 0; i < _boundary.length - idx; i++)
if (_boundary[i+idx] != _lookAheadBuf[i])
return -1; // There is not boundary => preserve lookahead buffer
// Boundary found => do not care about lookAheadBuffer since all remaining data are ignored
}
return bidx;
}
}
/**
* URL-encodes everything between "/"-characters.
* Encodes spaces as '%20' instead of '+'.
* @throws UnsupportedEncodingException
*/
private String encodeUri( String uri ) {
String newUri = "";
StringTokenizer st = new StringTokenizer( uri, "/ ", true );
while ( st.hasMoreTokens()) {
String tok = st.nextToken();
switch (tok) {
case "/":
newUri += "/";
break;
case " ":
newUri += "%20";
break;
default:
try {
newUri += URLEncoder.encode(tok, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw Log.throwErr(e);
}
break;
}
}
return newUri;
}
private final ServerSocket myServerSocket;
private Thread myThread;
private File myRootDir;
// ==================================================
// 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 )
{
Response res = null;
// Make sure we won't die of an exception later
if ( !homeDir.isDirectory())
res = new Response( HTTP_INTERNALERROR, MIME_PLAINTEXT,
"INTERNAL ERROR: 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.contains("../"))
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,
"Redirected: " +
uri + "");
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" );
// No index file, list the directory if it is readable
else if ( allowDirectoryListing && f.canRead() )
{
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 += "..
";
}
if (files!=null)
{
for ( int i=0; i" +
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 += "";
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;
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;
// Calculate etag
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());
int minus = range.indexOf( '-' );
try {
if ( minus > 0 )
{
startFrom = Long.parseLong( range.substring( 0, minus ));
endAt = Long.parseLong( range.substring( minus+1 ));
}
}
catch ( NumberFormatException e ) { Log.err(e); }
}
}
// Change return code and add Content-Range header when skipping is requested
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);
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;
try (FileInputStream fis = new FileInputStream(f) {
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);
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);
res.addHeader( "ETag", etag);
}
}
}
}
catch( IOException e ) {
Log.err(e);
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;
}
/**
* Hashtable mapping (String)FILENAME_EXTENSION -> (String)MIME_TYPE
*/
private static Hashtable theMimeTypes = new Hashtable();
static
{
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 this if you want to log to somewhere else than stdout
protected static final PrintStream myOut = System.out;
/**
* 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.";
}