3 import org.ibex.util.*;
8 import javax.servlet.*;
9 import javax.servlet.http.*;
10 import com.thoughtworks.xstream.*;
11 import org.prevayler.*;
12 import org.prevayler.implementation.snapshot.*;
14 public class Servlet extends HttpServlet {
16 private ServletScope servletscope = null;
18 private Prevayler prevayler;
20 private ServletContext cx = null;
22 public void destroy() { try {
23 synchronized(this.getClass()) {
24 Prevayler privatePrevayler = prevayler;
25 if (prevayler == null) return;
27 Prevalence.destroy(cx, prevayler);
29 } catch (Exception e) { e.printStackTrace(); } }
31 public void init(ServletConfig sc) throws ServletException {
32 cx = sc.getServletContext();
33 prevayler = Prevalence.getPrevayler(cx);
34 prevalent = (JS)prevayler.prevalentSystem();
37 public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException { doGet(request, response); }
38 public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
39 servletscope = new ServletScope(request, response, cx);
40 path = cx.getRealPath(((HttpServletRequest)request).getServletPath());
41 Reader xmlreader = new InputStreamReader(new FileInputStream(path));
42 new Template(servletscope, new JSScope(servletscope), xmlreader).wrap(null).toXML(response.getWriter());
45 public class ServletScope extends JSScope {
46 HttpServletRequest request;
47 HttpServletResponse response;
49 public String getRealPath(String s) { return cx.getRealPath(s); }
50 public ServletScope(ServletRequest request, ServletResponse response, ServletContext cx) {
52 this.request = (HttpServletRequest)request;
53 this.response = (HttpServletResponse)response;
56 private JS params = new JS() {
57 public Object get(Object key) { return request.getParameter(JS.toString(key)); }
58 public Enumeration keys() { return request.getParameterNames(); }
60 private JS cookies = new JS() {
62 public Object get(Object key) { return request.getCookie(JS.toString(key)); }
63 public Enumeration keys() { return request.getCookieNames(); }
66 private JS sessionAttributes = new JS() {
67 public Object get(Object key) { return request.getSession(true).getAttribute(JS.toString(key)); }
68 public void put(Object key, Object val) {
69 if (val == null) request.getSession(true).removeAttribute(JS.toString(key));
70 else request.setAttribute(JS.toString(key), val); }
71 public Enumeration keys() { return request.getSession(true).getAttributeNames(); }
73 private JS requestHeader = new JS() {
74 public Object get(Object key) { return request.getHeader(JS.toString(key)); }
75 public Enumeration keys() { return request.getHeaderNames(); }
77 private JS responseHeader = new JS() {
78 public void put(Object key, Object val) { response.setHeader(JS.toString(key), JS.toString(val)); }
82 /** lets us put multi-level get/put/call keys all in the same method */
83 private class Sub extends JS {
85 Sub(Object key) { this.key = key; }
86 public void put(Object key, Object val) throws JSExn {
87 ServletScope.this.put(JS.toString(this.key) + "." + JS.toString(key), val); }
88 public Object get(Object key) throws JSExn {
89 return ServletScope.this.get(JS.toString(this.key) + "." + JS.toString(key)); }
90 public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
91 return ServletScope.this.callMethod(this.key, a0, a1, a2, rest, nargs);
93 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
94 return ServletScope.this.callMethod(JS.toString(this.key) + "."
95 + JS.toString(method), a0, a1, a2, rest, nargs);
98 private Sub getSub(String key) { return new Sub(key); }
100 public Object callMethod(Object method, final Object a, final Object b, Object c, Object[] rest, int nargs) throws JSExn {
102 case "session.invalidate": request.getSession(true).invalidate(); return null;
104 String path = JS.toString(a);
105 if (path.indexOf("..") != -1) throw new JSExn("cannot use .. in paths");
106 File f = new File(cx.getRealPath("/") + File.separatorChar + path);
107 if (!f.isDirectory()) return null;
108 String[] contents = f.list();
109 JSArray ret = new JSArray(contents.length);
110 for(int i=0; i<contents.length; i++) ret.addElement(contents[i]);
115 public Object get(Object key) throws JSExn {
118 case "arg": return null;
119 case "prevalent": return prevayler.prevalentSystem();
120 case "request": return getSub("request");
121 case "request.user": return request.getRemoteUser();
122 case "request.header": return requestHeader;
123 case "request.method": return request.getMethod();
124 case "request.remote": return getSub("request.remote");
125 case "request.remote.ip": return request.getRemoteAddr();
126 case "request.remote.host": return request.getRemoteHost();
127 case "request.ssl": return request.isSecure();
128 case "request.path": return request.getPathInfo();
129 case "response": return getSub("response");
130 case "response.header": return responseHeader;
131 case "session": return getSub("session");
132 case "session.attr": return sessionAttributes;
133 case "session.created": return new JSDate(request.getSession(true).getCreationTime());
134 case "session.accessed": return new JSDate(request.getSession(true).getLastAccessedTime());
135 case "session.invalidate": return METHOD;
136 case "page": return getSub("page");
137 case "page.lastmodified": return new JSDate(new File(path).lastModified());
138 case "context": return getSub("context");
139 case "context.list": return METHOD;
140 case "params": return params;
141 case "cookie": return cookies;
145 public void put(Object key, Object val) throws JSExn {
147 //#switch(JS.toString(key))
149 try { prevayler.execute(new Prevalence.JSTransaction((JS)val));
150 } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); }
151 case "response.code": response.setStatus(JS.toInt(val));
152 case "response.redirect": response.sendRedirect(JS.toString(val));
153 case "response.contentType": response.setContentType(JS.toString(val));
155 } catch (IOException e) {