Mercurial Hosting > luan
annotate http/src/luan/modules/http/HttpServicer.java @ 498:ee55be414a34
Http.response is now mostly luan
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Mon, 18 May 2015 00:25:35 -0600 |
parents | 55f9f74f1e55 |
children | fa4af530697f |
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1 package luan.modules.http; |
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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; |
413 | 8 import java.util.HashMap; |
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9 import java.util.AbstractMap; |
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10 import java.util.Set; |
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11 import java.util.List; |
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12 import java.util.ArrayList; |
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13 import java.util.Arrays; |
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14 import java.util.Iterator; |
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15 import java.util.Enumeration; |
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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; |
436 | 23 import org.slf4j.Logger; |
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.LuanElement; |
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30 import luan.LuanException; |
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31 import luan.LuanTable; |
405 | 32 import luan.LuanMeta; |
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33 import luan.LuanJavaFunction; |
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34 import luan.LuanPropertyMeta; |
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35 import luan.DeepCloner; |
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36 import luan.modules.PackageLuan; |
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37 import luan.modules.IoLuan; |
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38 import luan.modules.TableLuan; |
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39 import luan.modules.Utils; |
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40 |
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41 |
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42 public final class HttpServicer { |
436 | 43 private static final Logger logger = LoggerFactory.getLogger(HttpServicer.class); |
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44 |
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45 public static boolean service(LuanState luan,HttpServletRequest request,HttpServletResponse response,String modName) |
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46 throws LuanException |
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47 { |
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48 LuanFunction fn; |
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49 synchronized(luan) { |
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50 Object mod = PackageLuan.load(luan,modName); |
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51 if( mod==null ) |
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52 return false; |
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53 if( !(mod instanceof LuanTable) ) |
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54 throw luan.exception( "module '"+modName+"' must return a table" ); |
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55 LuanTable tbl = (LuanTable)mod; |
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56 if( Boolean.TRUE.equals(tbl.get(luan,"per_session")) ) { |
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57 HttpSession session = request.getSession(); |
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58 LuanState sessionLuan = (LuanState)session.getValue("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 DeepCloner cloner = new DeepCloner(); |
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63 luan = (LuanState)cloner.deepClone(luan); |
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64 session.putValue("luan",luan); |
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65 } |
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66 tbl = (LuanTable)PackageLuan.require(luan,modName); |
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67 fn = getService(luan,tbl); |
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68 } else { |
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69 fn = getService(luan,tbl); |
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70 DeepCloner cloner = new DeepCloner(); |
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71 luan = (LuanState)cloner.deepClone(luan); |
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72 fn = (LuanFunction)cloner.get(fn); |
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73 } |
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74 } |
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75 |
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76 LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:http/Http"); |
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77 |
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78 // request |
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79 LuanTable requestTbl = (LuanTable)luan.call( (LuanFunction)module.rawGet("new_request") ); |
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80 module.rawPut("request",requestTbl); |
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81 requestTbl.rawPut("java",request); |
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82 requestTbl.rawPut("method",request.getMethod()); |
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83 requestTbl.rawPut("path",request.getRequestURI()); |
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84 requestTbl.rawPut("protocol",request.getProtocol()); |
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85 requestTbl.rawPut("scheme",request.getScheme()); |
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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 key = key.toLowerCase().replace('-','_'); |
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91 LuanTable values = new LuanTable(); |
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92 for( Enumeration<String> en = request.getHeaders(key); en.hasMoreElements(); ) { |
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93 values.rawPut(values.rawLength()+1,en.nextElement()); |
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94 } |
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95 headersTbl.rawPut(key,values); |
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96 } |
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97 |
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98 LuanTable parametersTbl = (LuanTable)requestTbl.rawGet("parameters"); |
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99 String contentType = request.getContentType(); |
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100 if( contentType==null || !contentType.startsWith("multipart/form-data") ) { |
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101 for( Map.Entry<String,String[]> entry : request.getParameterMap().entrySet() ) { |
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102 parametersTbl.rawPut(entry.getKey(),new LuanTable(Arrays.asList(entry.getValue()))); |
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103 } |
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104 } else { // multipart |
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105 try { |
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106 InputStream in = new BufferedInputStream(request.getInputStream()); |
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107 final MultiPartInputStream mpis = new MultiPartInputStream(in,contentType,null,null); |
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108 mpis.setDeleteOnExit(true); |
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109 for( Part p : mpis.getParts() ) { |
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110 final MultiPartInputStream.MultiPart part = (MultiPartInputStream.MultiPart)p; |
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111 String name = part.getName(); |
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112 Object value; |
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113 String filename = part.getContentDispositionFilename(); |
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114 if( filename == null ) { |
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115 value = new String(part.getBytes()); |
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116 } else { |
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117 LuanTable partTbl = LuanPropertyMeta.INSTANCE.newTable(); |
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118 partTbl.rawPut("filename",filename); |
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119 partTbl.rawPut("content_type",part.getContentType()); |
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120 LuanPropertyMeta.INSTANCE.getters(partTbl).rawPut( "content", new LuanFunction() { |
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121 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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122 try { |
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123 InputStream in = part.getInputStream(); |
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124 byte[] content = Utils.readAll(in); |
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125 in.close(); |
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126 return content; |
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127 } catch(IOException e) { |
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128 throw new RuntimeException(e); |
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129 } |
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130 } |
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131 } ); |
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132 value = partTbl; |
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133 } |
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134 LuanTable list = (LuanTable)parametersTbl.rawGet(name); |
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135 if( list == null ) { |
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136 list = new LuanTable(); |
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137 parametersTbl.rawPut(name,list); |
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138 } |
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139 parametersTbl.rawPut(parametersTbl.rawLength()+1,value); |
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140 } |
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141 } catch(IOException e) { |
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142 throw new RuntimeException(e); |
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143 } catch(ServletException e) { |
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144 throw new RuntimeException(e); |
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145 } |
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146 } |
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147 |
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148 LuanTable cookieTbl = (LuanTable)requestTbl.rawGet("cookie"); |
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149 for( Cookie cookie : request.getCookies() ) { |
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150 cookieTbl.rawPut( cookie.getName(), unescape(cookie.getValue()) ); |
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151 } |
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152 |
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153 |
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154 // response |
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155 LuanTable responseTbl = new LuanTable(); |
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156 responseTbl.rawPut("java",response); |
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157 luan.call( (LuanFunction)module.rawGet("new_response"), new Object[]{responseTbl} ); |
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158 module.rawPut("response",responseTbl); |
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159 |
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160 luan.call(fn,"<http>"); |
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161 setResponse(module,response); |
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162 return true; |
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163 } |
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164 |
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165 private static LuanFunction getService(LuanState luan,LuanTable tbl) |
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166 throws LuanException |
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167 { |
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168 Object respond = tbl.get(luan,"respond"); |
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169 if( respond == null ) |
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170 throw luan.exception( "function 'respond' is not defined" ); |
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171 if( !(respond instanceof LuanFunction) ) |
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172 throw luan.exception( "'respond' must be a function but is a " + Luan.type(respond) ); |
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173 return (LuanFunction)respond; |
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174 } |
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175 |
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176 private static void setResponse(LuanTable module,HttpServletResponse response) throws LuanException { |
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177 LuanTable responseTbl = (LuanTable)module.rawGet("response"); |
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178 int status = Luan.asInteger(responseTbl.rawGet("status")); |
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179 response.setStatus(status); |
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180 LuanTable responseHeaders = (LuanTable)responseTbl.rawGet("headers"); |
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181 for( Map.Entry<Object,Object> entry : responseHeaders.rawIterable() ) { |
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182 String name = (String)entry.getKey(); |
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183 name = name.replace('_','-'); |
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184 LuanTable values = (LuanTable)entry.getValue(); |
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185 for( Object value : values.asList() ) { |
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186 if( value instanceof String ) { |
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187 response.setHeader(name,(String)value); |
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188 continue; |
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189 } |
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190 Integer i = Luan.asInteger(value); |
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191 if( i != null ) { |
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192 response.setIntHeader(name,i); |
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193 continue; |
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194 } |
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195 throw new IllegalArgumentException("value must be string or integer for headers table"); |
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196 } |
436 | 197 } |
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198 // no more headers |
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199 responseTbl.rawPut("headers",null); |
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200 responseTbl.rawPut("header",null); |
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201 } |
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202 |
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203 |
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204 |
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205 // static utils |
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206 |
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207 private static String escape(String value) { |
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208 return value.replaceAll(";", "%3B"); |
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209 } |
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210 |
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211 private static String unescape(String value) { |
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212 return value.replaceAll("%3B", ";"); |
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213 } |
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214 |
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215 private static Cookie getCookie(HttpServletRequest request,String name) { |
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216 Cookie[] cookies = request.getCookies(); |
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217 if( cookies == null ) |
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218 return null; |
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219 for (Cookie cookie : cookies) { |
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220 if (cookie.getName().equals(name)) |
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221 return cookie; |
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222 } |
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223 return null; |
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224 } |
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225 |
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226 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) { |
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227 Cookie cookie = getCookie(request,name); |
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228 if( cookie==null || !cookie.getValue().equals(value) ) { |
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229 cookie = new Cookie(name, escape(value)); |
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230 cookie.setPath("/"); |
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231 if (domain != null && domain.length() > 0) |
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232 cookie.setDomain(domain); |
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233 if( isPersistent ) |
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234 cookie.setMaxAge(10000000); |
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235 response.addCookie(cookie); |
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236 } |
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237 } |
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238 |
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239 public static void removeCookie(HttpServletRequest request, |
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240 HttpServletResponse response, |
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241 String name, |
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242 String domain |
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243 ) { |
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244 Cookie cookie = getCookie(request, name); |
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245 if(cookie != null) { |
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246 Cookie delCookie = new Cookie(name, "delete"); |
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247 delCookie.setPath("/"); |
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248 delCookie.setMaxAge(0); |
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249 if (domain != null && domain.length() > 0) |
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250 delCookie.setDomain(domain); |
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251 response.addCookie(delCookie); |
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252 } |
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253 } |
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254 |
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255 } |