Mercurial Hosting > luan
annotate src/luan/host/WebHandler.java @ 1187:83c8a5a47f70
fixes for luanhost
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Thu, 22 Feb 2018 18:38:45 -0700 |
| parents | 94cf2576a922 |
| children | d3a3ca116e42 |
| rev | line source |
|---|---|
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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; | |
| 5 import java.util.Map; | |
| 6 import java.util.HashMap; | |
| 7 import org.slf4j.Logger; | |
| 8 import org.slf4j.LoggerFactory; | |
|
1185
94cf2576a922
implement WebHandler for nginx
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parents:
1182
diff
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9 import luan.webserver.Handler; |
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94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
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10 import luan.webserver.Server; |
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94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
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11 import luan.webserver.Request; |
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94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
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12 import luan.webserver.Response; |
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94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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13 import luan.webserver.handlers.IndexHandler; |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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14 import luan.webserver.handlers.ListHandler; |
| 1135 | 15 import luan.Luan; |
| 16 import luan.LuanState; | |
| 17 import luan.LuanException; | |
| 18 import luan.LuanTable; | |
| 19 import luan.LuanFunction; | |
| 20 import luan.modules.IoLuan; | |
| 21 import luan.modules.JavaLuan; | |
| 22 import luan.modules.PackageLuan; | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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23 import luan.modules.http.LuanHandler; |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
24 import luan.modules.http.NotFound; |
| 1135 | 25 |
| 26 | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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27 public class WebHandler implements Handler { |
| 1135 | 28 private static final Logger logger = LoggerFactory.getLogger(WebHandler.class); |
| 29 | |
| 30 private static class Site { | |
| 31 final Handler handler; | |
| 32 final LuanHandler luanHandler; | |
| 33 | |
| 34 Site(Handler handler,LuanHandler luanHandler) { | |
| 35 this.handler = handler; | |
| 36 this.luanHandler = luanHandler; | |
| 37 } | |
| 38 } | |
| 39 | |
| 40 public static String allowJavaFileName = "allow_java"; // change for security | |
| 41 private static final Map<String,Site> siteMap = new HashMap<String,Site>(); | |
| 42 private static String sitesDir = null; | |
| 43 | |
| 44 public static boolean isServing() { | |
| 45 return sitesDir != null; | |
| 46 } | |
| 47 | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
48 public WebHandler(String dir) { |
| 1135 | 49 if( sitesDir != null ) |
| 50 throw new RuntimeException("already set"); | |
| 51 if( !new File(dir).exists() ) | |
| 52 throw new RuntimeException(); | |
| 53 this.sitesDir = dir; | |
| 54 } | |
| 55 | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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56 public Response handle(Request request) { |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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57 String host = (String)request.headers.get("host"); |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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58 int i = host.indexOf(':'); |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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59 String domain = i == -1 ? host : host.substring(0,i); |
| 1135 | 60 // System.out.println("handle "+domain); |
| 61 Site site = getSite(domain); | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
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62 return site==null ? null : site.handler.handle(request); |
| 1135 | 63 } |
| 64 | |
| 65 public static Object runLuan(String domain,String sourceText,String sourceName) throws LuanException { | |
| 66 return getSite(domain).luanHandler.runLuan(sourceText,sourceName); | |
| 67 } | |
| 68 | |
| 69 public static Object callSite(String domain,String fnName,Object... args) throws LuanException { | |
| 70 return getSite(domain).luanHandler.call_rpc(fnName,args); | |
| 71 } | |
| 72 | |
| 73 private static Site getSite(String domain) { | |
| 74 synchronized(siteMap) { | |
| 75 Site site = siteMap.get(domain); | |
| 76 if( site == null ) { | |
| 77 if( sitesDir==null ) | |
| 78 throw new NullPointerException("sitesDir"); | |
| 79 File dir = new File(sitesDir,domain); | |
| 80 if( !dir.exists() /* && !recover(dir) */ ) | |
| 81 return null; | |
| 82 site = newSite(dir.toString(),domain); | |
| 83 siteMap.put(domain,site); | |
| 84 } | |
| 85 return site; | |
| 86 } | |
| 87 } | |
| 88 /* | |
| 89 private static boolean recover(File dir) { | |
| 90 File backups = new File(dir.getParentFile().getParentFile(),"backups"); | |
| 91 if( !backups.exists() ) | |
| 92 return false; | |
| 93 String name = dir.getName(); | |
| 94 File from = null; | |
| 95 for( File backup : backups.listFiles() ) { | |
| 96 File d = new File(backup,"current/"+name); | |
| 97 if( d.exists() && (from==null || from.lastModified() < d.lastModified()) ) | |
| 98 from = d; | |
| 99 } | |
| 100 if( from == null ) | |
| 101 return false; | |
| 102 if( !from.renameTo(dir) ) | |
| 103 throw new RuntimeException("couldn't rename "+from+" to "+dir); | |
| 104 logger.info("recovered "+name+" from "+from); | |
| 105 return true; | |
| 106 } | |
| 107 */ | |
| 108 static LuanTable initLuan(LuanState luan,String dir,String domain) { | |
| 109 LuanTable init; | |
| 110 try { | |
| 111 init = (LuanTable)luan.eval( | |
| 112 "local Luan = require 'luan:Luan.luan'\n" | |
| 113 +"local f = Luan.load_file 'classpath:luan/host/Init.luan'\n" | |
| 114 +"return f('"+dir+"','"+domain+"')\n" | |
| 115 ); | |
| 116 } catch(LuanException e) { | |
| 117 throw new RuntimeException(e); | |
| 118 } | |
| 119 File allowJavaFile = new File(dir,"site/private/"+allowJavaFileName); | |
| 120 if( !allowJavaFile.exists() ) { | |
| 121 JavaLuan.setSecurity( luan, javaSecurity ); | |
| 122 IoLuan.setSecurity( luan, ioSecurity(dir) ); | |
| 123 } | |
| 124 return init; | |
| 125 } | |
| 126 | |
| 127 private static Site newSite(String dir,String domain) { | |
| 128 LuanState luan = new LuanState(); | |
| 129 LuanTable init = initLuan(luan,dir,domain); | |
| 130 | |
| 131 String loggerRoot = (String)init.rawGet("logger_root"); | |
| 132 LuanHandler luanHandler = new LuanHandler(luan,loggerRoot); | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
133 NotFound notFoundHandler = new NotFound(luanHandler); |
| 1135 | 134 |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
135 Handler handler = luanHandler; |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
136 handler = new IndexHandler(handler); |
|
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
137 handler = new ListHandler( handler, notFoundHandler ); |
| 1135 | 138 |
| 139 String logDir = dir+"/site/private/local/logs/web"; | |
| 140 new File(logDir).mkdirs(); | |
| 141 | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
142 return new Site(handler,luanHandler); |
| 1135 | 143 } |
| 144 | |
| 145 public static void removeHandler(String domain) throws Exception { | |
| 146 synchronized(siteMap) { | |
| 147 Site site = siteMap.remove(domain); | |
| 148 if( site != null ) { | |
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
149 site.luanHandler.close(); |
| 1135 | 150 } |
| 151 } | |
| 152 } | |
| 153 | |
| 154 public static void loadHandler(String domain) { | |
| 155 getSite(domain); | |
| 156 } | |
| 157 | |
| 158 private static final IoLuan.Security ioSecurity(String dir) { | |
|
1174
bdf27aa2a65c
fix luanhost security bug
Franklin Schmidt <fschmidt@gmail.com>
parents:
1136
diff
changeset
|
159 final String siteUri = "file:" + dir + "/site"; |
| 1135 | 160 return new IoLuan.Security() { |
| 161 public void check(LuanState luan,String name) throws LuanException { | |
| 162 if( name.startsWith("file:") ) { | |
| 163 if( name.contains("..") ) | |
| 164 throw new LuanException("Security violation - '"+name+"' contains '..'"); | |
|
1174
bdf27aa2a65c
fix luanhost security bug
Franklin Schmidt <fschmidt@gmail.com>
parents:
1136
diff
changeset
|
165 if( !(name.equals(siteUri) || name.startsWith(siteUri+"/")) ) |
| 1135 | 166 throw new LuanException("Security violation - '"+name+"' outside of site dir"); |
| 167 } | |
| 168 else if( name.startsWith("classpath:luan/host/") ) { | |
| 169 throw new LuanException("Security violation"); | |
| 170 } | |
| 171 else if( name.startsWith("os:") || name.startsWith("bash:") ) { | |
| 172 throw new LuanException("Security violation"); | |
| 173 } | |
| 174 } | |
| 175 }; | |
| 176 } | |
| 177 | |
| 178 private static final JavaLuan.Security javaSecurity = new JavaLuan.Security() { | |
| 179 public void check(LuanState luan,String name) throws LuanException { | |
| 180 if( !name.startsWith("luan:") ) | |
| 181 throw new LuanException("Security violation - only luan:* modules can load Java"); | |
| 182 if( name.equals("luan:logging/Logging") ) | |
| 183 throw new LuanException("Security violation - cannot reload Logging"); | |
| 184 } | |
| 185 }; | |
| 186 } |