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view src/nabble/utils/luan/HttpServicer.java @ 62:4674ed7d56df default tip
remove n2
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sat, 30 Sep 2023 20:25:29 -0600 |
parents | 7ecd1a4ef557 |
children |
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package nabble.utils.luan; import java.io.InputStream; import java.io.BufferedInputStream; import java.io.PrintWriter; import java.io.IOException; import java.util.Map; import java.util.Set; import java.util.List; import java.util.ArrayList; import java.util.Arrays; import java.util.Iterator; import java.util.Enumeration; import java.util.concurrent.Executor; import java.util.concurrent.Executors; import javax.servlet.ServletOutputStream; import javax.servlet.ServletException; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import luan.Luan; import luan.LuanFunction; import luan.LuanException; import luan.LuanTable; import luan.LuanCloner; import luan.modules.PackageLuan; import luan.modules.IoLuan; import luan.modules.TableLuan; import luan.modules.Utils; import luan.modules.url.LuanUrl; public final class HttpServicer { private static final Logger logger = LoggerFactory.getLogger(HttpServicer.class); private Luan currentLuan; public HttpServicer(Luan luan) { this.currentLuan = luan; } public boolean service(HttpServletRequest request,HttpServletResponse response,String modName) throws LuanException { LuanFunction fn; Luan luan; synchronized(this) { enableLoad("luan:http/Http.luan",modName); LuanTable module = (LuanTable)PackageLuan.require(currentLuan,"luan:http/Http.luan"); Object mod = PackageLuan.load(currentLuan,modName); if( mod.equals(Boolean.FALSE) ) return false; if( !(mod instanceof LuanFunction) ) throw new LuanException( "module '"+modName+"' must return a function" ); LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL); luan = (Luan)cloner.clone(currentLuan); fn = (LuanFunction)cloner.get(mod); } LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:http/Http.luan"); // request LuanFunction newRequestFn = (LuanFunction)module.rawGet("new_request"); LuanTable requestTbl = (LuanTable)newRequestFn.call(); module.rawPut("request",requestTbl); requestTbl.rawPut("java",request); requestTbl.rawPut("method",request.getMethod()); requestTbl.rawPut("path",request.getRequestURI()); requestTbl.rawPut("protocol",request.getProtocol()); requestTbl.rawPut("scheme",request.getScheme()); requestTbl.rawPut("port",request.getServerPort()); LuanTable headersTbl = (LuanTable)requestTbl.rawGet("headers"); for( Enumeration<String> enKeys = request.getHeaderNames(); enKeys.hasMoreElements(); ) { String key = enKeys.nextElement(); List<String> values = new ArrayList<String>(); for( Enumeration<String> en = request.getHeaders(key); en.hasMoreElements(); ) { values.add(en.nextElement()); } int size = values.size(); if(size==0) throw new RuntimeException(); key = key.toLowerCase(); Object value = size==1 ? values.get(0) : new LuanTable(luan,values); headersTbl.rawPut(key,value); } LuanTable parametersTbl = (LuanTable)requestTbl.rawGet("parameters"); for( Object obj : request.getParameterMap().entrySet() ) { Map.Entry entry = (Map.Entry)obj; String[] a = (String[])entry.getValue(); Object value = a.length==1 ? a[0] : new LuanTable(luan,Arrays.asList(a)); parametersTbl.rawPut(entry.getKey(),value); } LuanTable cookieTbl = (LuanTable)requestTbl.rawGet("cookies"); for( Cookie cookie : request.getCookies() ) { cookieTbl.rawPut( cookie.getName(), unescape(cookie.getValue()) ); } // response LuanTable responseTbl = new LuanTable(luan); responseTbl.rawPut("java",response); LuanFunction newResponseFn = (LuanFunction)module.rawGet("new_response"); newResponseFn.call( responseTbl ); module.rawPut("response",responseTbl); fn.call(); return true; } public static void setResponse(LuanTable responseTbl,HttpServletResponse response) throws LuanException { int status = Luan.asInteger(responseTbl.rawGet("status")); response.setStatus(status); LuanTable responseHeaders = (LuanTable)responseTbl.rawGet("headers"); for( Map.Entry<Object,Object> entry : responseHeaders.rawIterable() ) { String name = (String)entry.getKey(); Object val = entry.getValue(); if( val instanceof LuanTable ) { LuanTable values = (LuanTable)val; for( Object value : values.asList() ) { setResponse(response,name,value); } } else { setResponse(response,name,val); } } } private static void setResponse(HttpServletResponse response,String name,Object value) throws LuanException { if( value instanceof String ) { response.setHeader(name,(String)value); return; } Integer i = Luan.asInteger(value); if( i != null ) { response.setIntHeader(name,i); return; } throw new IllegalArgumentException("value must be string or integer for headers table"); } private void enableLoad(String... mods) throws LuanException { LuanTable loaded = PackageLuan.loaded(currentLuan); for( String mod : mods ) { if( loaded.rawGet(mod) == null ) { LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); currentLuan = (Luan)cloner.clone(currentLuan); break; } } } // static utils 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 void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,LuanTable attributes) { Cookie cookie = getCookie(request,name); if( cookie==null || !cookie.getValue().equals(value) ) { cookie = new Cookie(name, escape(value)); if( attributes != null ) { String path = (String)attributes.rawGet("Path"); if( path != null ) cookie.setPath(path); String domain = (String)attributes.rawGet("Domain"); if (domain != null && domain.length() > 0) cookie.setDomain(domain); String maxAge = (String)attributes.rawGet("Max-Age"); if( maxAge != null ) cookie.setMaxAge(Integer.parseInt(maxAge)); } response.addCookie(cookie); } } }