Mercurial Hosting > luan
annotate src/luan/host/WebHandler.java @ 1230:034f2a0b3915
better gc
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Wed, 04 Apr 2018 14:54:29 -0600 |
| parents | 7e6d132904fd |
| children | 0b75337bb91a |
| rev | line source |
|---|---|
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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1 package luan.host; |
| 1135 | 2 |
| 3 import java.io.File; | |
| 4 import java.io.IOException; | |
| 1202 | 5 import java.lang.ref.Reference; |
| 6 import java.lang.ref.SoftReference; | |
| 7 //import java.lang.ref.WeakReference; | |
| 1230 | 8 import java.lang.ref.ReferenceQueue; |
| 1135 | 9 import java.util.Map; |
| 10 import java.util.HashMap; | |
| 11 import org.slf4j.Logger; | |
| 12 import org.slf4j.LoggerFactory; | |
|
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parents:
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13 import luan.webserver.Handler; |
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94cf2576a922
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parents:
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14 import luan.webserver.Server; |
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parents:
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15 import luan.webserver.Request; |
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parents:
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16 import luan.webserver.Response; |
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parents:
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17 import luan.webserver.handlers.IndexHandler; |
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parents:
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18 import luan.webserver.handlers.ListHandler; |
| 1135 | 19 import luan.Luan; |
| 20 import luan.LuanState; | |
| 21 import luan.LuanException; | |
| 22 import luan.LuanTable; | |
| 23 import luan.LuanFunction; | |
| 24 import luan.modules.IoLuan; | |
| 25 import luan.modules.JavaLuan; | |
| 26 import luan.modules.PackageLuan; | |
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parents:
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27 import luan.modules.http.LuanHandler; |
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94cf2576a922
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parents:
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28 import luan.modules.http.NotFound; |
| 1135 | 29 |
| 30 | |
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parents:
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31 public class WebHandler implements Handler { |
| 1135 | 32 private static final Logger logger = LoggerFactory.getLogger(WebHandler.class); |
| 33 | |
| 1230 | 34 private static class LuanRef { |
| 35 private final LuanState luan; | |
| 36 | |
| 37 private LuanRef(LuanState luan) { | |
| 38 this.luan = luan; | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 private static final ReferenceQueue<LuanRef> queue = new ReferenceQueue<LuanRef>(); | |
| 43 | |
| 44 private static class MyReference extends SoftReference<LuanRef> { | |
| 45 private final LuanState luan; | |
| 46 | |
| 47 private MyReference(LuanRef lr) { | |
| 48 super(lr,queue); | |
| 49 this.luan = lr.luan; | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 private static void sweep() { | |
| 54 while(true) { | |
| 55 MyReference ref = (MyReference)queue.poll(); | |
| 56 if( ref == null ) | |
| 57 return; | |
| 58 logger.info("sweep"); | |
| 59 ref.luan.close(); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 | |
| 1202 | 64 public static String allowJavaFileName = "allow_java"; // change for security |
| 1230 | 65 private static final Map<String,MyReference> siteMap = new HashMap<String,MyReference>(); |
| 1202 | 66 private static String sitesDir = null; |
| 1135 | 67 |
| 1202 | 68 private static final String HANDLER = "WebHandler.handler"; |
| 69 private static final String LUAN_HANDLER = "WebHandler.luanHandler"; | |
| 1135 | 70 |
| 71 public static boolean isServing() { | |
| 72 return sitesDir != null; | |
| 73 } | |
| 74 | |
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1185
94cf2576a922
implement WebHandler for nginx
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parents:
1182
diff
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75 public WebHandler(String dir) { |
| 1135 | 76 if( sitesDir != null ) |
| 77 throw new RuntimeException("already set"); | |
| 78 if( !new File(dir).exists() ) | |
| 79 throw new RuntimeException(); | |
| 1230 | 80 sitesDir = dir; |
| 1135 | 81 } |
| 82 | |
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parents:
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diff
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83 public Response handle(Request request) { |
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94cf2576a922
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Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
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84 String host = (String)request.headers.get("host"); |
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94cf2576a922
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parents:
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diff
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85 int i = host.indexOf(':'); |
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94cf2576a922
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parents:
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diff
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86 String domain = i == -1 ? host : host.substring(0,i); |
| 1135 | 87 // System.out.println("handle "+domain); |
| 1230 | 88 LuanRef lr = getSite(domain); |
| 89 if( lr == null ) | |
| 1202 | 90 return null; |
| 1230 | 91 LuanState luan = lr.luan; |
| 1202 | 92 Handler handler = (Handler)luan.registry().get(HANDLER); |
| 93 return handler.handle(request); | |
| 1135 | 94 } |
| 95 | |
| 96 public static Object runLuan(String domain,String sourceText,String sourceName) throws LuanException { | |
| 1230 | 97 LuanRef lr = getSite(domain); |
| 98 LuanState luan = lr.luan; | |
| 1202 | 99 LuanHandler luanHandler = (LuanHandler)luan.registry().get(LUAN_HANDLER); |
| 100 return luanHandler.runLuan(sourceText,sourceName); | |
| 1135 | 101 } |
| 102 | |
| 103 public static Object callSite(String domain,String fnName,Object... args) throws LuanException { | |
| 1230 | 104 LuanRef lr = getSite(domain); |
| 105 LuanState luan = lr.luan; | |
| 1202 | 106 LuanHandler luanHandler = (LuanHandler)luan.registry().get(LUAN_HANDLER); |
| 107 return luanHandler.call_rpc(fnName,args); | |
| 1135 | 108 } |
| 109 | |
| 1230 | 110 private static LuanRef getSite(String domain) { |
| 1135 | 111 synchronized(siteMap) { |
| 1230 | 112 Reference<LuanRef> ref = siteMap.get(domain); |
| 113 LuanRef lr = ref==null ? null : ref.get(); | |
| 114 if( lr == null ) { | |
| 1203 | 115 //if(ref!=null) logger.info("gc "+domain); |
| 1135 | 116 if( sitesDir==null ) |
| 117 throw new NullPointerException("sitesDir"); | |
| 118 File dir = new File(sitesDir,domain); | |
| 119 if( !dir.exists() /* && !recover(dir) */ ) | |
| 120 return null; | |
| 1230 | 121 sweep(); |
| 122 LuanState luan = newSite(dir.toString(),domain); | |
| 123 lr = new LuanRef(luan); | |
| 124 siteMap.put(domain,new MyReference(lr)); | |
| 1135 | 125 } |
| 1230 | 126 return lr; |
| 1135 | 127 } |
| 128 } | |
| 129 /* | |
| 130 private static boolean recover(File dir) { | |
| 131 File backups = new File(dir.getParentFile().getParentFile(),"backups"); | |
| 132 if( !backups.exists() ) | |
| 133 return false; | |
| 134 String name = dir.getName(); | |
| 135 File from = null; | |
| 136 for( File backup : backups.listFiles() ) { | |
| 137 File d = new File(backup,"current/"+name); | |
| 138 if( d.exists() && (from==null || from.lastModified() < d.lastModified()) ) | |
| 139 from = d; | |
| 140 } | |
| 141 if( from == null ) | |
| 142 return false; | |
| 143 if( !from.renameTo(dir) ) | |
| 144 throw new RuntimeException("couldn't rename "+from+" to "+dir); | |
| 145 logger.info("recovered "+name+" from "+from); | |
| 146 return true; | |
| 147 } | |
| 148 */ | |
| 149 static LuanTable initLuan(LuanState luan,String dir,String domain) { | |
| 150 LuanTable init; | |
| 151 try { | |
| 152 init = (LuanTable)luan.eval( | |
| 153 "local Luan = require 'luan:Luan.luan'\n" | |
| 154 +"local f = Luan.load_file 'classpath:luan/host/Init.luan'\n" | |
| 155 +"return f('"+dir+"','"+domain+"')\n" | |
| 156 ); | |
| 157 } catch(LuanException e) { | |
| 158 throw new RuntimeException(e); | |
| 159 } | |
| 160 File allowJavaFile = new File(dir,"site/private/"+allowJavaFileName); | |
| 161 if( !allowJavaFile.exists() ) { | |
| 162 JavaLuan.setSecurity( luan, javaSecurity ); | |
| 163 IoLuan.setSecurity( luan, ioSecurity(dir) ); | |
| 164 } | |
| 165 return init; | |
| 166 } | |
| 167 | |
| 1202 | 168 private static LuanState newSite(String dir,String domain) { |
| 1135 | 169 LuanState luan = new LuanState(); |
| 170 LuanTable init = initLuan(luan,dir,domain); | |
| 171 | |
| 172 String loggerRoot = (String)init.rawGet("logger_root"); | |
| 173 LuanHandler luanHandler = new LuanHandler(luan,loggerRoot); | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
174 NotFound notFoundHandler = new NotFound(luanHandler); |
| 1135 | 175 |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
176 Handler handler = luanHandler; |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
177 handler = new IndexHandler(handler); |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
178 handler = new ListHandler( handler, notFoundHandler ); |
| 1135 | 179 |
| 1202 | 180 String logDir = dir + "/site/private/local/logs/web"; |
| 1135 | 181 new File(logDir).mkdirs(); |
| 182 | |
| 1202 | 183 luan.registry().put(HANDLER,handler); |
| 184 luan.registry().put(LUAN_HANDLER,luanHandler); | |
| 185 | |
| 186 return luan; | |
| 1135 | 187 } |
| 188 | |
| 189 public static void removeHandler(String domain) throws Exception { | |
| 190 synchronized(siteMap) { | |
| 1230 | 191 Reference<LuanRef> ref = siteMap.remove(domain); |
| 192 LuanRef lr = ref==null ? null : ref.get(); | |
| 193 if( lr != null ) { | |
| 194 LuanState luan = lr.luan; | |
| 1202 | 195 LuanHandler luanHandler = (LuanHandler)luan.registry().get(LUAN_HANDLER); |
| 196 luanHandler.close(); | |
| 1135 | 197 } |
| 198 } | |
| 199 } | |
| 200 | |
| 201 public static void loadHandler(String domain) { | |
| 202 getSite(domain); | |
| 203 } | |
| 204 | |
| 205 private static final IoLuan.Security ioSecurity(String dir) { | |
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1174
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fix luanhost security bug
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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206 final String siteUri = "file:" + dir + "/site"; |
| 1135 | 207 return new IoLuan.Security() { |
| 208 public void check(LuanState luan,String name) throws LuanException { | |
| 209 if( name.startsWith("file:") ) { | |
| 210 if( name.contains("..") ) | |
| 211 throw new LuanException("Security violation - '"+name+"' contains '..'"); | |
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1174
bdf27aa2a65c
fix luanhost security bug
Franklin Schmidt <fschmidt@gmail.com>
parents:
1136
diff
changeset
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212 if( !(name.equals(siteUri) || name.startsWith(siteUri+"/")) ) |
| 1135 | 213 throw new LuanException("Security violation - '"+name+"' outside of site dir"); |
| 214 } | |
| 215 else if( name.startsWith("classpath:luan/host/") ) { | |
| 216 throw new LuanException("Security violation"); | |
| 217 } | |
| 218 else if( name.startsWith("os:") || name.startsWith("bash:") ) { | |
| 219 throw new LuanException("Security violation"); | |
| 220 } | |
| 221 } | |
| 222 }; | |
| 223 } | |
| 224 | |
| 225 private static final JavaLuan.Security javaSecurity = new JavaLuan.Security() { | |
| 226 public void check(LuanState luan,String name) throws LuanException { | |
| 227 if( !name.startsWith("luan:") ) | |
| 228 throw new LuanException("Security violation - only luan:* modules can load Java"); | |
| 229 if( name.equals("luan:logging/Logging") ) | |
| 230 throw new LuanException("Security violation - cannot reload Logging"); | |
| 231 } | |
| 232 }; | |
| 233 } |