Back to project page Amphitheatre.
The source code is released under:
Apache License
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/* * Copyright (C) 2014 Michell Bak/*from w ww .j a va 2 s . c om*/ * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.jerrellmardis.amphitheatre.server; import android.net.Uri; import android.util.Log; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; 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.util.Date; import java.util.Enumeration; import java.util.Locale; import java.util.Properties; import java.util.StringTokenizer; import java.util.TimeZone; import java.util.Vector; public abstract class StreamServer { int bufsize = 8192 * 2; public void setBufferSize(int size) { bufsize = size; } /** * Override this to customize the server.<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 abstract Response serve( String uri, String method, Properties header, Properties parms, Properties files ); /** * 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, StreamSource data ) { this.status = status; this.mimeType = mimeType; this.data = data; } /** * 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 StreamSource 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_PARTIALCONTENT = "206 Partial Content", HTTP_RANGE_NOT_SATISFIABLE = "416 Requested Range Not Satisfiable", 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.<p> * Throws an IOException if the socket is already in use */ public StreamServer( int port, File wwwroot ) throws IOException { myTcpPort = port; myServerSocket = new ServerSocket( myTcpPort ); myThread = new Thread( new Runnable() { public void run() { try { while(true) { Socket accept = myServerSocket.accept(); new HTTPSession(accept); } } catch (IOException ioe) {} } }); myThread.setDaemon(true); myThread.setPriority(Thread.MAX_PRIORITY); myThread.start(); } /** * Stops the server. */ public void stop() { try { myServerSocket.close(); myThread.join(); } catch ( IOException ioe ) {} catch ( InterruptedException e ) {} } /** * Handles one session, i.e. parses the HTTP request * and returns the response. */ private class HTTPSession implements Runnable { private InputStream is; private final Socket socket; public HTTPSession(Socket s) { socket = s; Thread t = new Thread( this ); t.setDaemon( true ); t.setPriority(Thread.MAX_PRIORITY); t.start(); } public void run() { try{ handleResponse(socket); }finally { if(is!=null) { try{ is.close(); socket.close(); }catch(IOException e){ e.printStackTrace(); } } } } private void handleResponse(Socket socket) { try { is = socket.getInputStream(); if ( is == null) return; // Read the first 8192 bytes. // The full header should fit in here. // Apache's default header limit is 8KB. 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 , "utf-8"), bufsize); 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); Log.d("Streamer", pre.toString()); Log.d("Streamer", "Params: "+parms.toString()); Log.d("Streamer", "Header: "+header.toString()); 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(socket, 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(socket, 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[bufsize]; int read = in.read(pbuf); while ( read >= 0 && !postLine.endsWith("\r\n") ) { postLine += String.valueOf(pbuf, 0, read); read = in.read(pbuf); if(Thread.interrupted()){ in.close(); throw new InterruptedException(); } } postLine = postLine.trim(); decodeParms( postLine, parms ); } } // Ok, now do the serve() Response r = serve( uri, method, header, parms, files ); if ( r == null ) sendError(socket, HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: Serve() returned a null response." ); else sendResponse(socket, r.status, r.mimeType, r.header, r.data ); in.close(); } catch ( IOException ioe ) { try { sendError(socket, 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(socket, HTTP_BADREQUEST, "BAD REQUEST: Syntax error. Usage: GET /example/file.html" ); String method = st.nextToken(); pre.put("method", method); if ( !st.hasMoreTokens()) sendError(socket, 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 = Uri.decode(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(Locale.ENGLISH), line.substring(p+1).trim()); line = in.readLine(); } } pre.put("uri", uri); } catch ( IOException ioe ) { sendError(socket, 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(socket, 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(Locale.ENGLISH), mpline.substring(p+1).trim()); mpline = in.readLine(); } if (mpline != null) { String contentDisposition = item.getProperty("content-disposition"); if (contentDisposition == null) { sendError(socket, 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(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) { int d = mpline.indexOf(boundary); if (d == -1) value+=mpline; else value+=mpline.substring(0,d-2); } } } else { if (boundarycount> bpositions.length) sendError(socket, 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(socket, 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<Integer> matchbytes = new Vector<Integer>(); 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(Integer.valueOf(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. <br/> * 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(socket, 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( '=' ); if ( sep >= 0 ) p.put( decodePercent( e.substring( 0, sep )).trim(), decodePercent( e.substring( sep+1 ))); } } /** * Returns an error message as a HTTP response and * throws InterruptedException to stop further request processing. */ private void sendError(Socket socket, String status, String msg ) throws InterruptedException { sendResponse(socket, status, MIME_PLAINTEXT, null, null); throw new InterruptedException(); } /** * Sends given response to the socket. */ private void sendResponse(Socket socket, String status, String mime, Properties header, StreamSource data ) { try { if ( status == null ) throw new Error( "sendResponse(): Status can't be null." ); OutputStream out = socket.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<Object> 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 ) { //long pending = data.available(); // This is to support partial sends, see serveFile() data.open(); byte[] buff = new byte[bufsize]; int read = 0; while ((read = data.read(buff))>0){ //if(SolidStreamer.LOG)Log.d("Streamer", "Read: "+ read +", pending: "+ data.available()); out.write( buff, 0, read ); } } out.flush(); out.close(); if ( data != null ) data.close(); } catch(IOException ioe) { // Couldn't write? No can do. try { socket.close(); } catch( Throwable t ) {} } } } private int myTcpPort; private final ServerSocket myServerSocket; private Thread myThread; /** * 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")); } }