Mercurial Hosting > luan
view web/src/luan/modules/web/HttpLuan.java @ 202:75750ceb45ee
add LuanState.registry
git-svn-id: https://luan-java.googlecode.com/svn/trunk@203 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Fri, 04 Jul 2014 17:18:39 +0000 |
parents | 2c08e7e27a70 |
children | a608066395c5 |
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package luan.modules.web; import java.io.PrintWriter; import java.io.IOException; import java.util.Map; import java.util.Set; import java.util.Arrays; import java.util.Enumeration; import javax.servlet.ServletOutputStream; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import luan.Luan; import luan.LuanState; import luan.LuanFunction; import luan.LuanElement; import luan.LuanException; import luan.LuanTable; import luan.LuanJavaFunction; import luan.LuanExitException; import luan.DeepCloner; import luan.modules.PackageLuan; import luan.modules.IoLuan; public final class HttpLuan { public static final LuanFunction LOADER = new LuanFunction() { @Override public Object call(LuanState luan,Object[] args) { LuanTable module = new LuanTable(); try { addStatic( module, "new_luan_handler", LuanState.class ); } catch(NoSuchMethodException e) { throw new RuntimeException(e); } return module; } }; private static void addStatic(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { t.put( method, new LuanJavaFunction(HttpLuan.class.getMethod(method,parameterTypes),null) ); } public static LuanHandler new_luan_handler(LuanState luan) { return new LuanHandler(luan); } public static boolean service(LuanState luan,HttpServletRequest request,HttpServletResponse response,String modName) throws LuanException { LuanFunction fn; synchronized(luan) { Object mod = PackageLuan.load(luan,modName); if( mod==null ) return false; if( !(mod instanceof LuanTable) ) throw luan.exception( "module '"+modName+"' must return a table" ); LuanTable tbl = (LuanTable)mod; if( Luan.toBoolean( tbl.get("per_session") ) ) { HttpSession session = request.getSession(); LuanState sessionLuan = (LuanState)session.getValue("luan"); if( sessionLuan!=null ) { luan = sessionLuan; } else { DeepCloner cloner = new DeepCloner(); luan = cloner.deepClone(luan); session.putValue("luan",luan); } tbl = (LuanTable)PackageLuan.require(luan,modName); fn = (LuanFunction)tbl.get("service"); } else { fn = (LuanFunction)tbl.get("service"); if( fn == null ) throw luan.exception( "function 'service' is not defined" ); DeepCloner cloner = new DeepCloner(); luan = cloner.deepClone(luan); fn = cloner.get(fn); } } LuanTable module = (LuanTable)PackageLuan.loaded(luan).get("web/Http"); if( module == null ) throw luan.exception( "module 'web/Http' not defined" ); HttpLuan lib = new HttpLuan(request,response); try { module.put( "request", lib.requestTable() ); module.put( "response", lib.responseTable() ); /* module.put( "write", new LuanJavaFunction( HttpLuan.class.getMethod( "text_write", LuanState.class, new Object[0].getClass() ), lib ) ); */ } catch(NoSuchMethodException e) { throw new RuntimeException(e); } luan.call(fn,"<http>"); return true; } private final HttpServletRequest request; private final HttpServletResponse response; // private PrintWriter writer = null; // private ServletOutputStream sos = null; private HttpLuan(HttpServletRequest request,HttpServletResponse response) { this.request = request; this.response = response; } private LuanTable requestTable() throws NoSuchMethodException { LuanTable req = new LuanTable(); req.put("java",request); req.put( "get_attribute", new LuanJavaFunction(HttpServletRequest.class.getMethod("getAttribute",String.class),request) ); req.put( "set_attribute", new LuanJavaFunction(HttpServletRequest.class.getMethod("setAttribute",String.class,Object.class),request) ); req.put( "get_parameter", new LuanJavaFunction(HttpServletRequest.class.getMethod("getParameter",String.class),request) ); req.put( "get_parameter_values", new LuanJavaFunction(HttpServletRequest.class.getMethod("getParameterValues",String.class),request) ); req.put( "get_header", new LuanJavaFunction(HttpServletRequest.class.getMethod("getHeader",String.class),request) ); add( req, "get_cookie_value", String.class ); req.put( "method", new LuanJavaFunction(HttpServletRequest.class.getMethod("getMethod"),request) ); req.put( "servlet_path", new LuanJavaFunction(HttpServletRequest.class.getMethod("getServletPath"),request) ); req.put( "server_name", new LuanJavaFunction(HttpServletRequest.class.getMethod("getServerName"),request) ); add( req, "current_url" ); req.put( "remote_address", new LuanJavaFunction(HttpServletRequest.class.getMethod("getRemoteAddr"),request) ); add( req, "get_session_attribute", String.class ); add( req, "set_session_attribute", String.class, Object.class ); return req; } private LuanTable responseTable() throws NoSuchMethodException { LuanTable resp = new LuanTable(); resp.put("java",response); add( resp, "send_redirect", String.class ); add( resp, "send_error", Integer.TYPE, String.class ); resp.put( "contains_header", new LuanJavaFunction(HttpServletResponse.class.getMethod("containsHeader",String.class),response) ); resp.put( "set_header", new LuanJavaFunction(HttpServletResponse.class.getMethod("setHeader",String.class,String.class),response) ); add( resp, "set_cookie", String.class, String.class, Boolean.TYPE, String.class ); add( resp, "remove_cookie", String.class, String.class ); resp.put( "set_content_type", new LuanJavaFunction(HttpServletResponse.class.getMethod("setContentType",String.class),response) ); add( resp, "text_writer" ); return resp; } private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { t.put( method, new LuanJavaFunction(HttpLuan.class.getMethod(method,parameterTypes),this) ); } /* public void text_write(LuanState luan,Object... args) throws LuanException, IOException { if( writer == null ) writer = response.getWriter(); for( Object obj : args ) { writer.print( luan.toString(obj) ); } } */ public LuanTable text_writer() throws IOException { return IoLuan.textWriter(response.getWriter()); } public String get_cookie_value(String name) { return getCookieValue(request, name); } public String current_url() { return getCurrentURL(request); } public void send_redirect(String redirectUrl) throws IOException { response.sendRedirect(redirectUrl); throw new LuanExitException(); } public void send_error(int code,String text) throws IOException { response.sendError(code, text); throw new LuanExitException(); } public void set_cookie(String name,String value,boolean isPersistent, String domain) { setCookie(request,response,name,value,isPersistent,domain); } public void remove_cookie(String name, String domain) { removeCookie(request,response,name,domain); } public Object get_session_attribute(String name) { return request.getSession().getAttribute(name); } public void set_session_attribute(String name,Object value) { request.getSession().setAttribute(name,value); } // static utils public static String getQueryString(HttpServletRequest request) { return getQueryString(request,0); } public static String getQueryString(HttpServletRequest request,int maxValueLen) { String method = request.getMethod(); if( method.equals("GET") ) return request.getQueryString(); if( !method.equals("POST") && !method.equals("HEAD") ) throw new RuntimeException(method); Enumeration en = request.getParameterNames(); StringBuilder queryBuf = new StringBuilder(); if( !en.hasMoreElements() ) return null; do { String param = (String)en.nextElement(); String value = request.getParameter(param); if( maxValueLen > 0 ) { int len = value.length(); if( len > maxValueLen ) value = value.substring(0,maxValueLen) + "..." + (len-maxValueLen); } queryBuf.append(param); queryBuf.append('='); queryBuf.append(value); queryBuf.append('&'); } while( en.hasMoreElements() ); queryBuf.deleteCharAt(queryBuf.length() - 1); return queryBuf.toString(); } public static String getCurrentURL(HttpServletRequest request) { return getCurrentURL(request,0); } public static String getCurrentURL(HttpServletRequest request,int maxValueLen) { // StringBuffer buf = HttpUtils.getRequestURL(request); StringBuffer buf = request.getRequestURL(); String qStr = getQueryString(request,maxValueLen); if(qStr != null && qStr.length() > 0) { buf.append('?'); buf.append(qStr); } return buf.toString(); } private static String escape(String value) { return value.replaceAll(";", "%3B"); } private static String unescape(String value) { return value.replaceAll("%3B", ";"); } private static Cookie getCookie(HttpServletRequest request,String name) { Cookie[] cookies = request.getCookies(); if( cookies == null ) return null; for (Cookie cookie : cookies) { if (cookie.getName().equals(name)) return cookie; } return null; } public static String getCookieValue(HttpServletRequest request,String name) { Cookie cookie = getCookie(request,name); return cookie==null ? null : unescape(cookie.getValue()); } public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) { Cookie cookie = getCookie(request,name); if( cookie==null || !cookie.getValue().equals(value) ) { cookie = new Cookie(name, escape(value)); cookie.setPath("/"); if (domain != null && domain.length() > 0) cookie.setDomain(domain); if( isPersistent ) cookie.setMaxAge(10000000); response.addCookie(cookie); } } public static void removeCookie(HttpServletRequest request, HttpServletResponse response, String name, String domain ) { Cookie cookie = getCookie(request, name); if(cookie != null) { Cookie delCookie = new Cookie(name, "delete"); delCookie.setPath("/"); delCookie.setMaxAge(0); if (domain != null && domain.length() > 0) delCookie.setDomain(domain); response.addCookie(delCookie); } } }