removed Location, added 500, minor changes
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Jeena Paradies
parent
7de5c549ca
commit
f74ae8c954
1 changed files with 153 additions and 120 deletions
273
WebServer.java
273
WebServer.java
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@ -44,147 +44,180 @@ public final class WebServer
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final class HttpRequest implements Runnable
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{
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// Constants
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// Recognized HTTP methods
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final static class HTTP_METHOD
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{
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final static String GET = "GET";
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final static String HEAD = "HEAD";
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final static String POST = "POST";
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}
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// Constants
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final static String HTTP_VERSION = "HTTP/1.0";
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final static String CRLF = "\r\n";
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final static String HTTPVERSION = "HTTP/1.0";
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final static String CRLF = "\r\n";
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final static String RESPONSE_200 = HTTPVERSION + " 200 OK " + CRLF;
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final static String RESPONSE_404 = HTTPVERSION + " 404 Not Found " + CRLF;
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final static String RESPONSE_400 = HTTPVERSION + " 400 Bad Request " + CRLF;
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final static String RESPONSE_501 = HTTPVERSION + " 501 Not Implemented " + CRLF;
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final static String LOCATION = " datalabb " + CRLF;
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// Recognized HTTP methods
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final static class HTTP_METHOD
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{
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final static String GET = "GET";
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final static String HEAD = "HEAD";
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final static String POST = "POST";
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}
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final static class HTTP_RESPONSE
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{
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final static String OK = HTTP_VERSION + " 200 OK " + CRLF;
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final static String NOT_FOUND = HTTP_VERSION + " 404 Not Found " + CRLF;
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final static String BAD_REQUEST = HTTP_VERSION + " 400 Bad Request " + CRLF;
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final static String INTERNAL_SERVER_ERROR = HTTP_VERSION + " 500 Internal Server Error " + CRLF;
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final static String NOT_IMPLEMENTED = HTTP_VERSION + " 501 Not Implemented " + CRLF;
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}
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Socket socket;
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Socket socket;
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// Constructor
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public HttpRequest(Socket socket) throws Exception
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{
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// Constructor
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public HttpRequest(Socket socket) throws Exception
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{
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this.socket = socket;
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}
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}
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// Implements the run() method of the Runnable interface
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public void run()
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{
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// Implements the run() method of the Runnable interface
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public void run()
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{
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try {
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processRequest();
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processRequest();
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} catch (Exception e) {
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System.out.println(e);
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System.err.println(e);
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try {
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DataOutputStream outs = new DataOutputStream(socket.getOutputStream());
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outs.writeChars(HTTP_RESPONSE.INTERNAL_SERVER_ERROR);
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outs.writeChars(CRLF);
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outs.writeChars("<h1>500 Internal Server Error</h1>");
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outs.close();
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socket.close();
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} catch (Exception e2) {
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System.err.println(e2);
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}
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}
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}
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}
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// Process a HTTP request
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private void processRequest() throws Exception
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{
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// Get the input and output streams of the socket.
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InputStream ins = socket.getInputStream();
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DataOutputStream outs = new DataOutputStream(socket.getOutputStream());
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// Process a HTTP request
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private void processRequest() throws Exception
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{
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// Get the input and output streams of the socket.
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InputStream ins = socket.getInputStream();
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DataOutputStream outs = new DataOutputStream(socket.getOutputStream());
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// Set up input stream filters
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BufferedReader br = new BufferedReader(new InputStreamReader(ins));
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Date d = new Date();
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// Set up input stream filters
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BufferedReader br = new BufferedReader(new InputStreamReader(ins));
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Date d = new Date();
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// Get the request line of the HTTP request
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String requestLine = br.readLine();
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// Display the request line
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System.out.println();
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System.out.println("Request:");
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System.out.println(" " + requestLine);
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// Get the request line of the HTTP request
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String requestLine = br.readLine();
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// Display the request line
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System.out.println();
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System.out.println("Request:");
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System.out.println(" " + requestLine);
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String[] tokens = requestLine.split("\\s+");
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//System.out.println("-->"+tokens.length);
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String[] tokens = requestLine.split("\\s+");
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//System.out.println("-->"+tokens.length);
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String Request = tokens[0];
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if(tokens.length != 3) {
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String Request = tokens[0];
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if(tokens.length != 3) {
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System.out.println("Wrong number of arguments in request!");
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outs.writeChars(RESPONSE_400 + LOCATION + getDateString(d));
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System.err.println("Wrong number of arguments in request!");
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outs.writeChars(HTTP_RESPONSE.BAD_REQUEST + getDateHeader(d));
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outs.writeChars(CRLF);
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outs.writeChars("<h1>400 Bas Request</h1>");
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} else if(tokens[1].charAt(0) != '/') {
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System.out.println("illegal url");
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outs.writeChars(RESPONSE_501 + LOCATION + getDateString(d));
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} else if(tokens[1].charAt(0) != '/') {
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System.err.println("illegal url");
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outs.writeChars(HTTP_RESPONSE.NOT_IMPLEMENTED + getDateHeader(d));
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outs.writeChars(CRLF);
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outs.writeChars("<h1>501 Not Implemented</h1>");
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} else if(Request.equals(HTTP_METHOD.GET) || Request.equals(HTTP_METHOD.HEAD)) {
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} else if(Request.equals(HTTP_METHOD.GET) || Request.equals(HTTP_METHOD.HEAD)) {
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FileInputStream filein;
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try {
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FileInputStream filein;
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try {
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File f = new File("." +tokens[1]);
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filein = new FileInputStream(f);
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String response = createHeader(d,f);
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outs.writeChars(response);
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File f = new File("." +tokens[1]);
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filein = new FileInputStream(f);
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String response = createHeader(d,f);
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outs.writeChars(response);
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if(Request.equals(HTTP_METHOD.GET)) {
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sendBytes(filein, outs);
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}
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if(Request.equals(HTTP_METHOD.GET)) {
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sendBytes(filein, outs);
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}
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} catch (FileNotFoundException e) {
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outs.writeChars(RESPONSE_404 + getDateString(d));
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}
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} else if(Request.equals(HTTP_METHOD.POST)){
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} catch (FileNotFoundException e) {
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outs.writeChars(HTTP_RESPONSE.NOT_FOUND + getDateHeader(d));
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outs.writeChars(CRLF);
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outs.writeChars("<h1>404 Not Found</h1>");
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outs.writeChars(RESPONSE_501 + getDateString(d));
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}
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else {
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outs.writeChars(RESPONSE_400 + getDateString(d));
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}
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// Close streams and sockets
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outs.close();
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br.close();
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socket.close();
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}
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private String getDateString(Date d){
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return "Date: " + d.toString() + CRLF;
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}
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private String createHeader(Date d, File f){
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String response = RESPONSE_200;
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response += getDateString(d);
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response += "LOCATION: " + f.getName() +CRLF;
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response += "Server: Labbserver" + CRLF;
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response += "Allow: " + HTTP_METHOD.GET + " " + HTTP_METHOD.HEAD+CRLF;
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response += "Content-Length: " + f.length() +CRLF;
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response += "Content-Type: " + contentType(f.getName()) +CRLF;
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response += "Last-Modified: " + new Date(f.lastModified()).toString() +CRLF;
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return response;
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}
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private static void sendBytes(FileInputStream fins, OutputStream outs) throws Exception
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{
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// Coopy buffer
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byte[] buffer = new byte[1024];
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int bytes = 0;
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while ((bytes = fins.read(buffer)) != -1) {
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outs.write(buffer, 0, bytes);
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}
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}
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} else if(Request.equals(HTTP_METHOD.POST)) {
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outs.writeChars(HTTP_RESPONSE.NOT_IMPLEMENTED + getDateHeader(d));
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outs.writeChars(CRLF);
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outs.writeChars("<h1>501 Not Implemented</h1>");
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} else {
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System.err.println("illegal url");
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outs.writeChars(HTTP_RESPONSE.BAD_REQUEST + getDateHeader(d));
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outs.writeChars(CRLF);
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outs.writeChars("<h1>400 Bas Request</h1>");
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}
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// Close streams and sockets
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outs.close();
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br.close();
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socket.close();
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}
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private static String contentType(String fileName)
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{
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if (fileName.toLowerCase().endsWith(".htm") ||
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fileName.toLowerCase().endsWith(".html")) {
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return "text/html";
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} else if (fileName.toLowerCase().endsWith(".gif")) {
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return "image/gif";
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} else if (fileName.toLowerCase().endsWith(".jpg")) {
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return "image/jpeg";
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} else {
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return "application/octet-stream";
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}
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}
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private String getDateHeader(Date d){
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return "Date: " + d.toString() + CRLF;
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}
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private String createHeader(Date d, File f){
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String response = HTTP_RESPONSE.OK;
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response += getDateHeader(d);
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response += "Server: Labbserver" + CRLF;
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response += "Allow: " + HTTP_METHOD.GET + " " + HTTP_METHOD.HEAD+CRLF;
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response += "Content-Length: " + f.length() + CRLF;
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response += "Content-Type: " + contentType(f.getName()) + CRLF;
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response += "Last-Modified: " + new Date(f.lastModified()).toString() + CRLF;
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return response;
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}
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private static void sendBytes(FileInputStream fins, OutputStream outs) throws Exception
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{
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// Coopy buffer
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byte[] buffer = new byte[1024];
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int bytes = 0;
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while ((bytes = fins.read(buffer)) != -1) {
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outs.write(buffer, 0, bytes);
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}
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}
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private static String contentType(String fileName)
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{
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if (fileName.toLowerCase().endsWith(".htm") || fileName.toLowerCase().endsWith(".html")) {
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return "text/html";
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} else if (fileName.toLowerCase().endsWith(".gif")) {
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return "image/gif";
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} else if (fileName.toLowerCase().endsWith(".png")) {
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return "image/png";
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} else if (fileName.toLowerCase().endsWith(".jpg") || fileName.toLowerCase().endsWith(".jpeg")) {
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return "image/jpeg";
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} else {
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return "application/octet-stream";
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}
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}
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}
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