Mercurial Hosting > luan
annotate src/luan/host/WebHandler.java @ 1330:f41919741100
fix security
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Mon, 11 Feb 2019 01:38:55 -0700 |
| parents | 307e76ccd0d6 |
| children | 11b7e11f9ed5 |
| rev | line source |
|---|---|
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
1 package luan.host; |
| 1135 | 2 |
| 3 import java.io.File; | |
| 4 import org.slf4j.Logger; | |
| 5 import org.slf4j.LoggerFactory; | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
6 import luan.webserver.Handler; |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
7 import luan.webserver.Request; |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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8 import luan.webserver.Response; |
| 1315 | 9 import luan.webserver.handlers.DomainHandler; |
| 1330 | 10 import luan.Luan; |
| 1135 | 11 import luan.LuanState; |
| 12 import luan.LuanException; | |
| 13 import luan.LuanTable; | |
| 1330 | 14 import luan.LuanFunction; |
| 15 import luan.LuanClosure; | |
| 16 import luan.modules.BasicLuan; | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
17 import luan.modules.http.LuanHandler; |
|
1321
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
|
18 import luan.modules.logging.LuanLogger; |
| 1135 | 19 |
| 20 | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
21 public class WebHandler implements Handler { |
| 1135 | 22 private static final Logger logger = LoggerFactory.getLogger(WebHandler.class); |
| 23 | |
| 1330 | 24 private static final class LuanRuntimeException extends RuntimeException { |
| 25 final LuanException e; | |
| 26 | |
| 27 LuanRuntimeException(LuanException e) { | |
| 28 this.e = e; | |
| 29 } | |
| 30 } | |
| 31 | |
| 1315 | 32 private static final DomainHandler.Factory factory = new DomainHandler.Factory() { |
| 33 public Handler newHandler(String domain) { | |
| 34 File dir = new File(sitesDir,domain); | |
| 35 if( !dir.exists() /* && !recover(dir) */ ) | |
| 36 return null; | |
| 37 String dirStr = dir.toString(); | |
| 1230 | 38 |
| 1315 | 39 String logDir = dirStr + "/site/private/local/logs/web"; |
| 40 new File(logDir).mkdirs(); | |
| 1230 | 41 |
| 1315 | 42 LuanState luan = new LuanState(); |
|
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307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
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43 try { |
|
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
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44 LuanLogger.newLoggerRepository(luan); |
|
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
|
45 } catch(LuanException e) { |
|
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
|
46 throw new RuntimeException(e); |
|
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
|
47 } |
|
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
|
48 initLuan(luan,dirStr,domain,true); |
|
307e76ccd0d6
generalize separate logging
Franklin Schmidt <fschmidt@gmail.com>
parents:
1315
diff
changeset
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49 return new LuanHandler(luan); |
| 1230 | 50 } |
| 1315 | 51 }; |
| 1230 | 52 |
| 1330 | 53 public static String securityPassword = "password"; // change for security |
| 1315 | 54 private static final DomainHandler domainHandler = new DomainHandler(factory); |
| 1202 | 55 private static String sitesDir = null; |
| 1135 | 56 |
| 57 public static boolean isServing() { | |
| 58 return sitesDir != null; | |
| 59 } | |
| 60 | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
61 public WebHandler(String dir) { |
| 1135 | 62 if( sitesDir != null ) |
| 63 throw new RuntimeException("already set"); | |
| 64 if( !new File(dir).exists() ) | |
| 65 throw new RuntimeException(); | |
| 1230 | 66 sitesDir = dir; |
| 1135 | 67 } |
| 68 | |
| 1315 | 69 @Override public Response handle(Request request) { |
| 70 return domainHandler.handle(request); | |
| 1135 | 71 } |
| 72 | |
| 73 public static Object runLuan(String domain,String sourceText,String sourceName) throws LuanException { | |
| 1315 | 74 LuanHandler luanHandler = (LuanHandler)domainHandler.getHandler(domain); |
| 75 return luanHandler.runLuan(sourceText,sourceName); | |
| 1135 | 76 } |
| 77 | |
| 78 public static Object callSite(String domain,String fnName,Object... args) throws LuanException { | |
| 1315 | 79 LuanHandler luanHandler = (LuanHandler)domainHandler.getHandler(domain); |
| 80 return luanHandler.call_rpc(fnName,args); | |
| 1135 | 81 } |
| 82 | |
| 83 /* | |
| 84 private static boolean recover(File dir) { | |
| 85 File backups = new File(dir.getParentFile().getParentFile(),"backups"); | |
| 86 if( !backups.exists() ) | |
| 87 return false; | |
| 88 String name = dir.getName(); | |
| 89 File from = null; | |
| 90 for( File backup : backups.listFiles() ) { | |
| 91 File d = new File(backup,"current/"+name); | |
| 92 if( d.exists() && (from==null || from.lastModified() < d.lastModified()) ) | |
| 93 from = d; | |
| 94 } | |
| 95 if( from == null ) | |
| 96 return false; | |
| 97 if( !from.renameTo(dir) ) | |
| 98 throw new RuntimeException("couldn't rename "+from+" to "+dir); | |
| 99 logger.info("recovered "+name+" from "+from); | |
| 100 return true; | |
| 101 } | |
| 102 */ | |
| 1330 | 103 static void initLuan(LuanState luan,String dir,String domain,boolean logging) { |
| 104 security(luan,dir); | |
| 1135 | 105 try { |
| 1330 | 106 LuanFunction fn = BasicLuan.load_file(luan,"classpath:luan/host/init.luan"); |
| 107 fn.call(luan,new Object[]{dir,domain,logging}); | |
| 1135 | 108 } catch(LuanException e) { |
| 1330 | 109 throw new LuanRuntimeException(e); |
| 1135 | 110 } |
| 111 } | |
| 112 | |
| 1315 | 113 public static void removeHandler(String domain) { |
| 114 domainHandler.removeHandler(domain); | |
| 1135 | 115 } |
| 116 | |
| 1330 | 117 public static void loadHandler(String domain) throws LuanException { |
| 118 try { | |
| 119 domainHandler.getHandler(domain); | |
| 120 } catch(LuanRuntimeException e) { | |
| 121 throw e.e; | |
| 122 } | |
| 1135 | 123 } |
| 124 | |
| 1330 | 125 private static final void security(LuanState luan,String dir) { |
|
1174
bdf27aa2a65c
fix luanhost security bug
Franklin Schmidt <fschmidt@gmail.com>
parents:
1136
diff
changeset
|
126 final String siteUri = "file:" + dir + "/site"; |
| 1330 | 127 Luan.Security security = new Luan.Security() { |
| 128 public void check(LuanState luan,LuanClosure closure,String op,Object... args) | |
| 129 throws LuanException | |
| 130 { | |
| 131 if( op.equals("uri") ) { | |
| 132 String name = (String)args[0]; | |
| 133 if( name.startsWith("file:") ) { | |
| 134 if( name.contains("..") ) | |
| 135 throw new LuanException("Security violation - '"+name+"' contains '..'"); | |
| 136 if( !(name.equals(siteUri) || name.startsWith(siteUri+"/")) ) | |
| 137 throw new LuanException("Security violation - '"+name+"' outside of site dir"); | |
| 138 } | |
| 139 else if( name.startsWith("classpath:luan/host/") ) { | |
| 140 throw new LuanException("Security violation"); | |
| 141 } | |
| 142 else if( name.startsWith("os:") || name.startsWith("bash:") ) { | |
| 143 throw new LuanException("Security violation"); | |
| 144 } | |
| 145 } else { | |
| 146 String name = closure.sourceName; | |
| 147 if( !( | |
| 148 name.startsWith("luan:") | |
| 149 || name.startsWith("classpath:") | |
| 150 || name.matches("^file:[^/]+$") | |
| 151 ) ) | |
| 152 throw new LuanException("Security violation - only luan:* modules can load Java"); | |
| 153 if( name.equals("luan:logging/Logging") ) | |
| 154 throw new LuanException("Security violation - cannot reload Logging"); | |
| 1135 | 155 } |
| 156 } | |
| 157 }; | |
| 1330 | 158 Luan.setSecurity(luan,security); |
| 1135 | 159 } |
| 160 | |
| 161 } |