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annotate src/luan/modules/http/jetty/HttpServicer.java @ 1150:0842b9b570f8

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change http headers interface
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 04 Feb 2018 18:03:37 -0700
parents d30d400fd43d
children 21d157b153fe
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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diff changeset
1 package luan.modules.http.jetty;
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2
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3 import java.io.InputStream;
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4 import java.io.BufferedInputStream;
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5 import java.io.PrintWriter;
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6 import java.io.IOException;
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7 import java.util.Map;
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8 import java.util.Set;
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9 import java.util.List;
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10 import java.util.ArrayList;
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11 import java.util.Arrays;
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12 import java.util.Iterator;
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13 import java.util.Enumeration;
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14 import java.util.concurrent.Executor;
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15 import java.util.concurrent.Executors;
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16 import javax.servlet.ServletOutputStream;
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17 import javax.servlet.ServletException;
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18 import javax.servlet.http.Cookie;
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19 import javax.servlet.http.HttpServletRequest;
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20 import javax.servlet.http.HttpServletResponse;
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21 import javax.servlet.http.HttpSession;
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22 import javax.servlet.http.Part;
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23 import org.slf4j.Logger;
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24 import org.slf4j.LoggerFactory;
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25 import org.eclipse.jetty.util.MultiPartInputStream;
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26 import luan.Luan;
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27 import luan.LuanState;
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28 import luan.LuanFunction;
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29 import luan.LuanException;
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30 import luan.LuanTable;
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31 //import luan.LuanPropertyMeta;
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32 import luan.LuanCloner;
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33 import luan.modules.PackageLuan;
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34 import luan.modules.IoLuan;
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35 import luan.modules.TableLuan;
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36 import luan.modules.Utils;
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37 import luan.modules.url.LuanUrl;
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39
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40 public final class HttpServicer {
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41 private static final Logger logger = LoggerFactory.getLogger(HttpServicer.class);
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42
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43 public static boolean service(LuanState luan,HttpServletRequest request,HttpServletResponse response,String modName)
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44 throws LuanException
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45 {
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46 LuanFunction fn;
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47 synchronized(luan) {
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48 PackageLuan.enableLoad(luan,"luan:http/Http.luan",modName);
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49 LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:http/Http.luan");
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50 LuanTable per_session_pages = (LuanTable)module.rawGet("per_session_pages");
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51 Object mod = PackageLuan.load(luan,modName);
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52 if( mod.equals(Boolean.FALSE) )
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53 return false;
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54 if( !(mod instanceof LuanFunction) )
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55 throw new LuanException( "module '"+modName+"' must return a function" );
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56 if( Boolean.TRUE.equals(per_session_pages.rawGet(mod)) ) {
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57 HttpSession session = request.getSession();
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58 LuanState sessionLuan = (LuanState)session.getAttribute("luan");
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59 if( sessionLuan!=null ) {
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60 luan = sessionLuan;
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61 } else {
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62 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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63 luan = (LuanState)cloner.clone(luan);
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64 session.setAttribute("luan",luan);
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65 }
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66 fn = (LuanFunction)PackageLuan.require(luan,modName);
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67 } else {
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68 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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69 luan = (LuanState)cloner.clone(luan);
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70 fn = (LuanFunction)cloner.get(mod);
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71 }
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72 }
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73
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74 LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:http/Http.luan");
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76 // request
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77 LuanFunction newRequestFn = (LuanFunction)module.rawGet("new_request");
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78 LuanTable requestTbl = (LuanTable)newRequestFn.call(luan);
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79 module.rawPut("request",requestTbl);
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80 requestTbl.rawPut("java",request);
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81 requestTbl.rawPut("method",request.getMethod());
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82 requestTbl.rawPut("path",request.getRequestURI());
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83 requestTbl.rawPut("protocol",request.getProtocol());
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84 requestTbl.rawPut("scheme",request.getScheme());
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85 requestTbl.rawPut("port",request.getServerPort());
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86
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87 LuanTable headersTbl = (LuanTable)requestTbl.rawGet("headers");
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88 for( Enumeration<String> enKeys = request.getHeaderNames(); enKeys.hasMoreElements(); ) {
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89 String key = enKeys.nextElement();
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90 List<String> values = new ArrayList<String>();
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91 for( Enumeration<String> en = request.getHeaders(key); en.hasMoreElements(); ) {
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92 values.add(en.nextElement());
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93 }
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94 int size = values.size();
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95 if(size==0) throw new RuntimeException();
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96 key = key.toLowerCase();
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97 Object value = size==1 ? values.get(0) : new LuanTable(values);
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98 headersTbl.rawPut(key,value);
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99 }
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100
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101 LuanTable parametersTbl = (LuanTable)requestTbl.rawGet("parameters");
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102 String contentType = request.getContentType();
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103 if( contentType==null || !contentType.startsWith("multipart/form-data") ) {
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104 for( Map.Entry<String,String[]> entry : request.getParameterMap().entrySet() ) {
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105 parametersTbl.rawPut(entry.getKey(),new LuanTable(Arrays.asList(entry.getValue())));
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106 }
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107 } else { // multipart
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108 try {
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109 InputStream in = new BufferedInputStream(request.getInputStream());
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110 final MultiPartInputStream mpis = new MultiPartInputStream(in,contentType,null,null);
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111 mpis.setDeleteOnExit(true);
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112 for( Part p : mpis.getParts() ) {
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113 final MultiPartInputStream.MultiPart part = (MultiPartInputStream.MultiPart)p;
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114 String name = part.getName();
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115 /*
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116 System.out.println("name = "+name);
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117 System.out.println("getContentType = "+part.getContentType());
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118 System.out.println("getHeaderNames = "+part.getHeaderNames());
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119 System.out.println("content-disposition = "+part.getHeader("content-disposition"));
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120 System.out.println();
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121 */
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122 Object value;
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123 String filename = part.getContentDispositionFilename();
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124 if( filename == null ) {
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125 value = new String(part.getBytes());
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126 } else {
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127 /*
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128 LuanTable partTbl = LuanPropertyMeta.INSTANCE.newTable();
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129 partTbl.rawPut("filename",filename);
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130 partTbl.rawPut("content_type",part.getContentType());
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131 LuanPropertyMeta.INSTANCE.getters(partTbl).rawPut( "content", new LuanFunction() {
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132 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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133 try {
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134 InputStream in = part.getInputStream();
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135 byte[] content = Utils.readAll(in);
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136 in.close();
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137 return content;
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138 } catch(IOException e) {
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139 throw new RuntimeException(e);
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140 }
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141 }
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142 } );
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143 */
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144 LuanTable partTbl = new LuanTable();
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145 partTbl.rawPut("filename",filename);
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146 partTbl.rawPut("content_type",part.getContentType());
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147 LuanTable mt = new LuanTable();
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148 partTbl.setMetatable(mt);
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149 mt.rawPut( "__index", new LuanFunction() {
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150 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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151 Object key = args[1];
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152 if( "content".equals(key) ) {
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153 try {
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154 InputStream in = part.getInputStream();
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155 byte[] content = Utils.readAll(in);
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156 in.close();
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157 return content;
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158 } catch(IOException e) {
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159 throw new RuntimeException(e);
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160 }
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161 }
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162 return null;
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163 }
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164 } );
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165 value = partTbl;
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166 }
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167 LuanTable list = (LuanTable)parametersTbl.rawGet(name);
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168 if( list == null ) {
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169 list = new LuanTable();
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170 parametersTbl.rawPut(name,list);
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171 }
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172 list.rawPut(parametersTbl.rawLength()+1,value);
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173 }
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174 } catch(IOException e) {
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175 throw new RuntimeException(e);
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176 } catch(ServletException e) {
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177 throw new RuntimeException(e);
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178 }
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179 }
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180
497
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181 LuanTable cookieTbl = (LuanTable)requestTbl.rawGet("cookie");
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182 for( Cookie cookie : request.getCookies() ) {
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183 cookieTbl.rawPut( cookie.getName(), unescape(cookie.getValue()) );
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184 }
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185
498
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186
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187 // response
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188 LuanTable responseTbl = new LuanTable();
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189 responseTbl.rawPut("java",response);
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190 LuanFunction newResponseFn = (LuanFunction)module.rawGet("new_response");
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191 newResponseFn.call( luan, new Object[]{responseTbl} );
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192 module.rawPut("response",responseTbl);
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193
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194 fn.call(luan);
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195 handle_run_later(luan);
497
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196 return true;
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197 }
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198
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199 public static void setResponse(LuanTable responseTbl,HttpServletResponse response) throws LuanException {
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200 int status = Luan.asInteger(responseTbl.rawGet("status"));
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201 response.setStatus(status);
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202 LuanTable responseHeaders = (LuanTable)responseTbl.rawGet("headers");
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203 for( Map.Entry<Object,Object> entry : responseHeaders.rawIterable() ) {
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204 String name = (String)entry.getKey();
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205 Object val = entry.getValue();
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206 if( val instanceof LuanTable ) {
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207 LuanTable values = (LuanTable)val;
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208 for( Object value : values.asList() ) {
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209 setResponse(response,name,value);
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210 }
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211 } else {
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212 setResponse(response,name,val);
223
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213 }
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214 }
217
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215 }
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216
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217 private static void setResponse(HttpServletResponse response,String name,Object value) throws LuanException {
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218 if( value instanceof String ) {
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219 response.setHeader(name,(String)value);
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220 return;
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221 }
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222 Integer i = Luan.asInteger(value);
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223 if( i != null ) {
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224 response.setIntHeader(name,i);
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225 return;
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226 }
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227 throw new IllegalArgumentException("value must be string or integer for headers table");
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228 }
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229
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230
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231
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232 // static utils
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233
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234 private static String escape(String value) {
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235 return value.replaceAll(";", "%3B");
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236 }
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237
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238 private static String unescape(String value) {
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239 return value.replaceAll("%3B", ";");
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240 }
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241
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242 private static Cookie getCookie(HttpServletRequest request,String name) {
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243 Cookie[] cookies = request.getCookies();
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244 if( cookies == null )
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245 return null;
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246 for (Cookie cookie : cookies) {
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247 if (cookie.getName().equals(name))
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248 return cookie;
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249 }
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250 return null;
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251 }
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252
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253 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) {
89
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254 Cookie cookie = getCookie(request,name);
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255 if( cookie==null || !cookie.getValue().equals(value) ) {
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256 cookie = new Cookie(name, escape(value));
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257 cookie.setPath("/");
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258 if (domain != null && domain.length() > 0)
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259 cookie.setDomain(domain);
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260 if( isPersistent )
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261 cookie.setMaxAge(10000000);
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262 response.addCookie(cookie);
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263 }
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264 }
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265
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266 public static void removeCookie(HttpServletRequest request,
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267 HttpServletResponse response,
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268 String name,
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269 String domain
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270 ) {
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271 Cookie cookie = getCookie(request, name);
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272 if(cookie != null) {
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273 Cookie delCookie = new Cookie(name, "delete");
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274 delCookie.setPath("/");
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275 delCookie.setMaxAge(0);
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276 if (domain != null && domain.length() > 0)
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277 delCookie.setDomain(domain);
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278 response.addCookie(delCookie);
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279 }
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280 }
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281
626
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282
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283
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284 private static String RUN_LATER_KEY = "Http.run_later";
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285 private static final Executor exec = Executors.newSingleThreadExecutor();
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286
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287 public static void run_later(final LuanState luan,final LuanFunction fn,final Object... args) {
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288 List list = (List)luan.registry().get(RUN_LATER_KEY);
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289 if( list == null ) {
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290 list = new ArrayList();
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291 luan.registry().put(RUN_LATER_KEY,list);
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292 }
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293 list.add(
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294 new Runnable(){public void run() {
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295 try {
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296 fn.call(luan,args);
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297 } catch(LuanException e) {
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298 e.printStackTrace();
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299 }
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300 }}
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301 );
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302 }
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303
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304 private static void handle_run_later(LuanState luan) {
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305 List list = (List)luan.registry().get(RUN_LATER_KEY);
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306 if( list==null )
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307 return;
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308 for( Object obj : list ) {
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309 exec.execute((Runnable)obj);
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310 }
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311 }
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312 }