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- package javax.servlet.http;
-
- import java.io.IOException;
- import java.io.Serializable;
- import java.lang.reflect.Method;
- import java.text.MessageFormat;
- import java.util.Enumeration;
- import java.util.ResourceBundle;
- import javax.servlet.GenericServlet;
- import javax.servlet.ServletException;
- import javax.servlet.ServletOutputStream;
- import javax.servlet.ServletRequest;
- import javax.servlet.ServletResponse;
-
- public abstract class HttpServlet extends GenericServlet implements Serializable {
- private static final String METHOD_DELETE = "DELETE";
- private static final String METHOD_HEAD = "HEAD";
- private static final String METHOD_GET = "GET";
- private static final String METHOD_OPTIONS = "OPTIONS";
- private static final String METHOD_POST = "POST";
- private static final String METHOD_PUT = "PUT";
- private static final String METHOD_TRACE = "TRACE";
- private static final String HEADER_IFMODSINCE = "If-Modified-Since";
- private static final String HEADER_LASTMOD = "Last-Modified";
- private static final String LSTRING_FILE = "javax.servlet.http.LocalStrings";
- private static ResourceBundle lStrings = ResourceBundle.getBundle("javax.servlet.http.LocalStrings");
- // $FF: synthetic field
- static Class class$javax$servlet$http$HttpServlet;
-
- protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String protocol = req.getProtocol();
- String msg = lStrings.getString("http.method_get_not_supported");
- if (protocol.endsWith("1.1")) {
- resp.sendError(405, msg);
- } else {
- resp.sendError(400, msg);
- }
-
- }
-
- protected long getLastModified(HttpServletRequest req) {
- return -1L;
- }
-
- protected void doHead(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- NoBodyResponse response = new NoBodyResponse(resp);
- this.doGet(req, response);
- response.setContentLength();
- }
-
- protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String protocol = req.getProtocol();
- String msg = lStrings.getString("http.method_post_not_supported");
- if (protocol.endsWith("1.1")) {
- resp.sendError(405, msg);
- } else {
- resp.sendError(400, msg);
- }
-
- }
-
- protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String protocol = req.getProtocol();
- String msg = lStrings.getString("http.method_put_not_supported");
- if (protocol.endsWith("1.1")) {
- resp.sendError(405, msg);
- } else {
- resp.sendError(400, msg);
- }
-
- }
-
- protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String protocol = req.getProtocol();
- String msg = lStrings.getString("http.method_delete_not_supported");
- if (protocol.endsWith("1.1")) {
- resp.sendError(405, msg);
- } else {
- resp.sendError(400, msg);
- }
-
- }
-
- private static Method[] getAllDeclaredMethods(Class c) {
- if (c.equals(class$javax$servlet$http$HttpServlet == null ? (class$javax$servlet$http$HttpServlet = class$("javax.servlet.http.HttpServlet")) : class$javax$servlet$http$HttpServlet)) {
- return null;
- } else {
- Method[] parentMethods = getAllDeclaredMethods(c.getSuperclass());
- Method[] thisMethods = c.getDeclaredMethods();
- if (parentMethods != null && parentMethods.length > 0) {
- Method[] allMethods = new Method[parentMethods.length + thisMethods.length];
- System.arraycopy(parentMethods, 0, allMethods, 0, parentMethods.length);
- System.arraycopy(thisMethods, 0, allMethods, parentMethods.length, thisMethods.length);
- thisMethods = allMethods;
- }
-
- return thisMethods;
- }
- }
-
- protected void doOptions(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- Method[] methods = getAllDeclaredMethods(this.getClass());
- boolean ALLOW_GET = false;
- boolean ALLOW_HEAD = false;
- boolean ALLOW_POST = false;
- boolean ALLOW_PUT = false;
- boolean ALLOW_DELETE = false;
- boolean ALLOW_TRACE = true;
- boolean ALLOW_OPTIONS = true;
-
- for(int i = 0; i < methods.length; ++i) {
- Method m = methods[i];
- if (m.getName().equals("doGet")) {
- ALLOW_GET = true;
- ALLOW_HEAD = true;
- }
-
- if (m.getName().equals("doPost")) {
- ALLOW_POST = true;
- }
-
- if (m.getName().equals("doPut")) {
- ALLOW_PUT = true;
- }
-
- if (m.getName().equals("doDelete")) {
- ALLOW_DELETE = true;
- }
- }
-
- String allow = null;
- if (ALLOW_GET && allow == null) {
- allow = "GET";
- }
-
- if (ALLOW_HEAD) {
- if (allow == null) {
- allow = "HEAD";
- } else {
- allow = allow + ", HEAD";
- }
- }
-
- if (ALLOW_POST) {
- if (allow == null) {
- allow = "POST";
- } else {
- allow = allow + ", POST";
- }
- }
-
- if (ALLOW_PUT) {
- if (allow == null) {
- allow = "PUT";
- } else {
- allow = allow + ", PUT";
- }
- }
-
- if (ALLOW_DELETE) {
- if (allow == null) {
- allow = "DELETE";
- } else {
- allow = allow + ", DELETE";
- }
- }
-
- if (ALLOW_TRACE) {
- if (allow == null) {
- allow = "TRACE";
- } else {
- allow = allow + ", TRACE";
- }
- }
-
- if (ALLOW_OPTIONS) {
- if (allow == null) {
- allow = "OPTIONS";
- } else {
- allow = allow + ", OPTIONS";
- }
- }
-
- resp.setHeader("Allow", allow);
- }
-
- protected void doTrace(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String CRLF = "\r\n";
- String responseString = "TRACE " + req.getRequestURI() + " " + req.getProtocol();
-
- String headerName;
- for(Enumeration reqHeaderEnum = req.getHeaderNames(); reqHeaderEnum.hasMoreElements(); responseString = responseString + CRLF + headerName + ": " + req.getHeader(headerName)) {
- headerName = (String)reqHeaderEnum.nextElement();
- }
-
- responseString = responseString + CRLF;
- int responseLength = responseString.length();
- resp.setContentType("message/http");
- resp.setContentLength(responseLength);
- ServletOutputStream out = resp.getOutputStream();
- out.print(responseString);
- out.close();
- }
-
- protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String method = req.getMethod();
- if (method.equals("GET")) {
- long lastModified = this.getLastModified(req);
- if (lastModified == -1L) {
- this.doGet(req, resp);
- } else {
- long ifModifiedSince = req.getDateHeader("If-Modified-Since");
- if (ifModifiedSince < lastModified / 1000L * 1000L) {
- this.maybeSetLastModified(resp, lastModified);
- this.doGet(req, resp);
- } else {
- resp.setStatus(304);
- }
- }
- } else if (method.equals("HEAD")) {
- long lastModified = this.getLastModified(req);
- this.maybeSetLastModified(resp, lastModified);
- this.doHead(req, resp);
- } else if (method.equals("POST")) {
- this.doPost(req, resp);
- } else if (method.equals("PUT")) {
- this.doPut(req, resp);
- } else if (method.equals("DELETE")) {
- this.doDelete(req, resp);
- } else if (method.equals("OPTIONS")) {
- this.doOptions(req, resp);
- } else if (method.equals("TRACE")) {
- this.doTrace(req, resp);
- } else {
- String errMsg = lStrings.getString("http.method_not_implemented");
- Object[] errArgs = new Object[1];
- errArgs[0] = method;
- errMsg = MessageFormat.format(errMsg, errArgs);
- resp.sendError(501, errMsg);
- }
-
- }
-
- private void maybeSetLastModified(HttpServletResponse resp, long lastModified) {
- if (!resp.containsHeader("Last-Modified")) {
- if (lastModified >= 0L) {
- resp.setDateHeader("Last-Modified", lastModified);
- }
-
- }
- }
-
- public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
- HttpServletRequest request;
- HttpServletResponse response;
- try {
- request = (HttpServletRequest)req;
- response = (HttpServletResponse)res;
- } catch (ClassCastException var6) {
- throw new ServletException("non-HTTP request or response");
- }
-
- this.service(request, response);
- }
-
- // $FF: synthetic method
- static Class class$(String x0) {
- try {
- return Class.forName(x0);
- } catch (ClassNotFoundException x1) {
- throw new NoClassDefFoundError(x1.getMessage());
- }
- }
- }
-