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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css"
href="../../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<span class="sourceLineNo">002</span> * Licensed to the Apache Software
Foundation (ASF) under one<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * or more contributor license
agreements. See the NOTICE file<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * distributed with this work for
additional information<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * regarding copyright ownership. The
ASF licenses this file<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * to you under the Apache License,
Version 2.0 (the<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * "License"); you may not use this file
except in compliance<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * with the License. You may obtain a
copy of the License at<a name="line.8"></a>
+<span class="sourceLineNo">009</span> *<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *
http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * Unless required by applicable law or
agreed to in writing, software<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * distributed under the License is
distributed on an "AS IS" BASIS,<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF
ANY KIND, either express or implied.<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * See the License for the specific
language governing permissions and<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * limitations under the License.<a
name="line.16"></a>
+<span class="sourceLineNo">017</span> */<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>package
org.apache.hadoop.hbase.security.access;<a name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.io.Closeable;<a
name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.io.IOException;<a
name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.HashMap;<a
name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.HashSet;<a
name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.List;<a
name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.Map;<a
name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.Set;<a
name="line.27"></a>
+<span class="sourceLineNo">028</span>import
java.util.concurrent.ConcurrentHashMap;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import
java.util.concurrent.atomic.AtomicLong;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>import
org.apache.hadoop.conf.Configuration;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import
org.apache.hadoop.hbase.AuthUtil;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.Cell;<a
name="line.33"></a>
+<span class="sourceLineNo">034</span>import
org.apache.hadoop.hbase.TableName;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import
org.apache.hadoop.hbase.exceptions.DeserializationException;<a
name="line.35"></a>
+<span class="sourceLineNo">036</span>import
org.apache.hadoop.hbase.log.HBaseMarkers;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import
org.apache.hadoop.hbase.security.Superusers;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import
org.apache.hadoop.hbase.security.User;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import
org.apache.hadoop.hbase.security.UserProvider;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import
org.apache.hadoop.hbase.util.Bytes;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import
org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import
org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import
org.apache.zookeeper.KeeperException;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.slf4j.Logger;<a
name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.slf4j.LoggerFactory;<a
name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>import
org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a
name="line.47"></a>
+<span class="sourceLineNo">048</span>import
org.apache.hbase.thirdparty.com.google.common.collect.ListMultimap;<a
name="line.48"></a>
+<span class="sourceLineNo">049</span>import
org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a
name="line.49"></a>
+<span class="sourceLineNo">050</span><a name="line.50"></a>
+<span class="sourceLineNo">051</span>/**<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * Performs authorization checks for a
given user's assigned permissions.<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * <p><a name="line.53"></a>
+<span class="sourceLineNo">054</span> * There're following scopes:
<b>Global</b>, <b>Namespace</b>,
<b>Table</b>, <b>Family</b>,<a name="line.54"></a>
+<span class="sourceLineNo">055</span> * <b>Qualifier</b>,
<b>Cell</b>.<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * Generally speaking, higher scopes
can overrides lower scopes,<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * except for Cell permission can be
granted even a user has not permission on specified table,<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * which means the user can get/scan
only those granted cells parts.<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * </p><a name="line.59"></a>
+<span class="sourceLineNo">060</span> * e.g, if user A has global permission
R(ead), he can<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * read table T without checking table
scope permission, so authorization checks alway starts from<a
name="line.61"></a>
+<span class="sourceLineNo">062</span> * Global scope.<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * <p><a name="line.63"></a>
+<span class="sourceLineNo">064</span> * For each scope, not only user but
also groups he belongs to will be checked.<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * </p><a name="line.65"></a>
+<span class="sourceLineNo">066</span> */<a name="line.66"></a>
+<span class="sourceLineNo">067</span>@InterfaceAudience.Private<a
name="line.67"></a>
+<span class="sourceLineNo">068</span>public final class AuthManager implements
Closeable {<a name="line.68"></a>
+<span class="sourceLineNo">069</span><a name="line.69"></a>
+<span class="sourceLineNo">070</span> /**<a name="line.70"></a>
+<span class="sourceLineNo">071</span> * Cache of permissions, it is thread
safe.<a name="line.71"></a>
+<span class="sourceLineNo">072</span> * @param <T> T extends
Permission<a name="line.72"></a>
+<span class="sourceLineNo">073</span> */<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private static class
PermissionCache<T extends Permission> {<a name="line.74"></a>
+<span class="sourceLineNo">075</span> private final Object mutex = new
Object();<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private Map<String,
Set<T>> cache = new HashMap<>();<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> void put(String name, T perm) {<a
name="line.78"></a>
+<span class="sourceLineNo">079</span> synchronized (mutex) {<a
name="line.79"></a>
+<span class="sourceLineNo">080</span> Set<T> perms =
cache.getOrDefault(name, new HashSet<>());<a name="line.80"></a>
+<span class="sourceLineNo">081</span> perms.add(perm);<a
name="line.81"></a>
+<span class="sourceLineNo">082</span> cache.put(name, perms);<a
name="line.82"></a>
+<span class="sourceLineNo">083</span> }<a name="line.83"></a>
+<span class="sourceLineNo">084</span> }<a name="line.84"></a>
+<span class="sourceLineNo">085</span><a name="line.85"></a>
+<span class="sourceLineNo">086</span> Set<T> get(String name) {<a
name="line.86"></a>
+<span class="sourceLineNo">087</span> synchronized (mutex) {<a
name="line.87"></a>
+<span class="sourceLineNo">088</span> return cache.get(name);<a
name="line.88"></a>
+<span class="sourceLineNo">089</span> }<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> void clear() {<a name="line.92"></a>
+<span class="sourceLineNo">093</span> synchronized (mutex) {<a
name="line.93"></a>
+<span class="sourceLineNo">094</span> for (Map.Entry<String,
Set<T>> entry : cache.entrySet()) {<a name="line.94"></a>
+<span class="sourceLineNo">095</span> entry.getValue().clear();<a
name="line.95"></a>
+<span class="sourceLineNo">096</span> }<a name="line.96"></a>
+<span class="sourceLineNo">097</span> cache.clear();<a
name="line.97"></a>
+<span class="sourceLineNo">098</span> }<a name="line.98"></a>
+<span class="sourceLineNo">099</span> }<a name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
+<span class="sourceLineNo">101</span>
PermissionCache<NamespacePermission> NS_NO_PERMISSION = new
PermissionCache<>();<a name="line.101"></a>
+<span class="sourceLineNo">102</span> PermissionCache<TablePermission>
TBL_NO_PERMISSION = new PermissionCache<>();<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span> /**<a name="line.104"></a>
+<span class="sourceLineNo">105</span> * Cache for global permission.<a
name="line.105"></a>
+<span class="sourceLineNo">106</span> * Since every user/group can only have
one global permission, no need to user PermissionCache.<a name="line.106"></a>
+<span class="sourceLineNo">107</span> */<a name="line.107"></a>
+<span class="sourceLineNo">108</span> private volatile Map<String,
GlobalPermission> globalCache;<a name="line.108"></a>
+<span class="sourceLineNo">109</span> /** Cache for namespace permission.
*/<a name="line.109"></a>
+<span class="sourceLineNo">110</span> private ConcurrentHashMap<String,
PermissionCache<NamespacePermission>> namespaceCache =<a
name="line.110"></a>
+<span class="sourceLineNo">111</span> new ConcurrentHashMap<>();<a
name="line.111"></a>
+<span class="sourceLineNo">112</span> /** Cache for table permission. */<a
name="line.112"></a>
+<span class="sourceLineNo">113</span> private ConcurrentHashMap<TableName,
PermissionCache<TablePermission>> tableCache =<a name="line.113"></a>
+<span class="sourceLineNo">114</span> new ConcurrentHashMap<>();<a
name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span> private static final Logger LOG =
LoggerFactory.getLogger(AuthManager.class);<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span> private Configuration conf;<a
name="line.118"></a>
+<span class="sourceLineNo">119</span> private ZKPermissionWatcher zkperms;<a
name="line.119"></a>
+<span class="sourceLineNo">120</span> private final AtomicLong mtime = new
AtomicLong(0L);<a name="line.120"></a>
+<span class="sourceLineNo">121</span><a name="line.121"></a>
+<span class="sourceLineNo">122</span> private AuthManager(ZKWatcher watcher,
Configuration conf)<a name="line.122"></a>
+<span class="sourceLineNo">123</span> throws IOException {<a
name="line.123"></a>
+<span class="sourceLineNo">124</span> this.conf = conf;<a
name="line.124"></a>
+<span class="sourceLineNo">125</span> // initialize global permissions
based on configuration<a name="line.125"></a>
+<span class="sourceLineNo">126</span> globalCache = initGlobal(conf);<a
name="line.126"></a>
+<span class="sourceLineNo">127</span><a name="line.127"></a>
+<span class="sourceLineNo">128</span> this.zkperms = new
ZKPermissionWatcher(watcher, this, conf);<a name="line.128"></a>
+<span class="sourceLineNo">129</span> try {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> this.zkperms.start();<a
name="line.130"></a>
+<span class="sourceLineNo">131</span> } catch (KeeperException ke) {<a
name="line.131"></a>
+<span class="sourceLineNo">132</span> LOG.error("ZooKeeper initialization
failed", ke);<a name="line.132"></a>
+<span class="sourceLineNo">133</span> }<a name="line.133"></a>
+<span class="sourceLineNo">134</span> }<a name="line.134"></a>
+<span class="sourceLineNo">135</span><a name="line.135"></a>
+<span class="sourceLineNo">136</span> @Override<a name="line.136"></a>
+<span class="sourceLineNo">137</span> public void close() {<a
name="line.137"></a>
+<span class="sourceLineNo">138</span> this.zkperms.close();<a
name="line.138"></a>
+<span class="sourceLineNo">139</span> }<a name="line.139"></a>
+<span class="sourceLineNo">140</span><a name="line.140"></a>
+<span class="sourceLineNo">141</span> /**<a name="line.141"></a>
+<span class="sourceLineNo">142</span> * Initialize with global permission
assignments<a name="line.142"></a>
+<span class="sourceLineNo">143</span> * from the {@code hbase.superuser}
configuration key.<a name="line.143"></a>
+<span class="sourceLineNo">144</span> */<a name="line.144"></a>
+<span class="sourceLineNo">145</span> private Map<String,
GlobalPermission> initGlobal(Configuration conf) throws IOException {<a
name="line.145"></a>
+<span class="sourceLineNo">146</span> UserProvider userProvider =
UserProvider.instantiate(conf);<a name="line.146"></a>
+<span class="sourceLineNo">147</span> User user =
userProvider.getCurrent();<a name="line.147"></a>
+<span class="sourceLineNo">148</span> if (user == null) {<a
name="line.148"></a>
+<span class="sourceLineNo">149</span> throw new IOException("Unable to
obtain the current user, " +<a name="line.149"></a>
+<span class="sourceLineNo">150</span> "authorization checks for
internal operations will not work correctly!");<a name="line.150"></a>
+<span class="sourceLineNo">151</span> }<a name="line.151"></a>
+<span class="sourceLineNo">152</span> String currentUser =
user.getShortName();<a name="line.152"></a>
+<span class="sourceLineNo">153</span><a name="line.153"></a>
+<span class="sourceLineNo">154</span> Map<String, GlobalPermission>
global = new HashMap<>();<a name="line.154"></a>
+<span class="sourceLineNo">155</span> // the system user is always
included<a name="line.155"></a>
+<span class="sourceLineNo">156</span> List<String> superusers =
Lists.asList(currentUser, conf.getStrings(<a name="line.156"></a>
+<span class="sourceLineNo">157</span> Superusers.SUPERUSER_CONF_KEY,
new String[0]));<a name="line.157"></a>
+<span class="sourceLineNo">158</span> for (String name : superusers) {<a
name="line.158"></a>
+<span class="sourceLineNo">159</span> GlobalPermission globalPermission =
new GlobalPermission(Permission.Action.values());<a name="line.159"></a>
+<span class="sourceLineNo">160</span> global.put(name,
globalPermission);<a name="line.160"></a>
+<span class="sourceLineNo">161</span> }<a name="line.161"></a>
+<span class="sourceLineNo">162</span> return global;<a name="line.162"></a>
+<span class="sourceLineNo">163</span> }<a name="line.163"></a>
+<span class="sourceLineNo">164</span><a name="line.164"></a>
+<span class="sourceLineNo">165</span> public ZKPermissionWatcher
getZKPermissionWatcher() {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> return this.zkperms;<a
name="line.166"></a>
+<span class="sourceLineNo">167</span> }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span> /**<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * Update acl info for table.<a
name="line.170"></a>
+<span class="sourceLineNo">171</span> * @param table name of table<a
name="line.171"></a>
+<span class="sourceLineNo">172</span> * @param data updated acl data<a
name="line.172"></a>
+<span class="sourceLineNo">173</span> * @throws IOException exception when
deserialize data<a name="line.173"></a>
+<span class="sourceLineNo">174</span> */<a name="line.174"></a>
+<span class="sourceLineNo">175</span> public void
refreshTableCacheFromWritable(TableName table, byte[] data) throws IOException
{<a name="line.175"></a>
+<span class="sourceLineNo">176</span> if (data != null &&
data.length > 0) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> try {<a name="line.177"></a>
+<span class="sourceLineNo">178</span> ListMultimap<String,
Permission> perms =<a name="line.178"></a>
+<span class="sourceLineNo">179</span>
AccessControlLists.readPermissions(data, conf);<a name="line.179"></a>
+<span class="sourceLineNo">180</span> if (perms != null) {<a
name="line.180"></a>
+<span class="sourceLineNo">181</span> if
(Bytes.equals(table.getName(), AccessControlLists.ACL_GLOBAL_NAME)) {<a
name="line.181"></a>
+<span class="sourceLineNo">182</span> updateGlobalCache(perms);<a
name="line.182"></a>
+<span class="sourceLineNo">183</span> } else {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> updateTableCache(table,
perms);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> }<a name="line.185"></a>
+<span class="sourceLineNo">186</span> }<a name="line.186"></a>
+<span class="sourceLineNo">187</span> } catch (DeserializationException
e) {<a name="line.187"></a>
+<span class="sourceLineNo">188</span> throw new IOException(e);<a
name="line.188"></a>
+<span class="sourceLineNo">189</span> }<a name="line.189"></a>
+<span class="sourceLineNo">190</span> } else {<a name="line.190"></a>
+<span class="sourceLineNo">191</span> LOG.info("Skipping permission cache
refresh because writable data is empty");<a name="line.191"></a>
+<span class="sourceLineNo">192</span> }<a name="line.192"></a>
+<span class="sourceLineNo">193</span> }<a name="line.193"></a>
+<span class="sourceLineNo">194</span><a name="line.194"></a>
+<span class="sourceLineNo">195</span> /**<a name="line.195"></a>
+<span class="sourceLineNo">196</span> * Update acl info for namespace.<a
name="line.196"></a>
+<span class="sourceLineNo">197</span> * @param namespace namespace<a
name="line.197"></a>
+<span class="sourceLineNo">198</span> * @param data updated acl data<a
name="line.198"></a>
+<span class="sourceLineNo">199</span> * @throws IOException exception when
deserialize data<a name="line.199"></a>
+<span class="sourceLineNo">200</span> */<a name="line.200"></a>
+<span class="sourceLineNo">201</span> public void
refreshNamespaceCacheFromWritable(String namespace, byte[] data) throws
IOException {<a name="line.201"></a>
+<span class="sourceLineNo">202</span> if (data != null &&
data.length > 0) {<a name="line.202"></a>
+<span class="sourceLineNo">203</span> try {<a name="line.203"></a>
+<span class="sourceLineNo">204</span> ListMultimap<String,
Permission> perms =<a name="line.204"></a>
+<span class="sourceLineNo">205</span>
AccessControlLists.readPermissions(data, conf);<a name="line.205"></a>
+<span class="sourceLineNo">206</span> if (perms != null) {<a
name="line.206"></a>
+<span class="sourceLineNo">207</span> updateNamespaceCache(namespace,
perms);<a name="line.207"></a>
+<span class="sourceLineNo">208</span> }<a name="line.208"></a>
+<span class="sourceLineNo">209</span> } catch (DeserializationException
e) {<a name="line.209"></a>
+<span class="sourceLineNo">210</span> throw new IOException(e);<a
name="line.210"></a>
+<span class="sourceLineNo">211</span> }<a name="line.211"></a>
+<span class="sourceLineNo">212</span> } else {<a name="line.212"></a>
+<span class="sourceLineNo">213</span> LOG.debug("Skipping permission
cache refresh because writable data is empty");<a name="line.213"></a>
+<span class="sourceLineNo">214</span> }<a name="line.214"></a>
+<span class="sourceLineNo">215</span> }<a name="line.215"></a>
+<span class="sourceLineNo">216</span><a name="line.216"></a>
+<span class="sourceLineNo">217</span> /**<a name="line.217"></a>
+<span class="sourceLineNo">218</span> * Updates the internal global
permissions cache.<a name="line.218"></a>
+<span class="sourceLineNo">219</span> * @param globalPerms new global
permissions<a name="line.219"></a>
+<span class="sourceLineNo">220</span> */<a name="line.220"></a>
+<span class="sourceLineNo">221</span> private void
updateGlobalCache(ListMultimap<String, Permission> globalPerms) {<a
name="line.221"></a>
+<span class="sourceLineNo">222</span> try {<a name="line.222"></a>
+<span class="sourceLineNo">223</span> Map<String, GlobalPermission>
global = initGlobal(conf);<a name="line.223"></a>
+<span class="sourceLineNo">224</span> for (String name :
globalPerms.keySet()) {<a name="line.224"></a>
+<span class="sourceLineNo">225</span> for (Permission permission :
globalPerms.get(name)) {<a name="line.225"></a>
+<span class="sourceLineNo">226</span> global.put(name,
(GlobalPermission) permission);<a name="line.226"></a>
+<span class="sourceLineNo">227</span> }<a name="line.227"></a>
+<span class="sourceLineNo">228</span> }<a name="line.228"></a>
+<span class="sourceLineNo">229</span> globalCache = global;<a
name="line.229"></a>
+<span class="sourceLineNo">230</span> mtime.incrementAndGet();<a
name="line.230"></a>
+<span class="sourceLineNo">231</span> } catch (Exception e) {<a
name="line.231"></a>
+<span class="sourceLineNo">232</span> // Never happens<a
name="line.232"></a>
+<span class="sourceLineNo">233</span> LOG.error("Error occurred while
updating the global cache", e);<a name="line.233"></a>
+<span class="sourceLineNo">234</span> }<a name="line.234"></a>
+<span class="sourceLineNo">235</span> }<a name="line.235"></a>
+<span class="sourceLineNo">236</span><a name="line.236"></a>
+<span class="sourceLineNo">237</span> /**<a name="line.237"></a>
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permissions cache for specified table.<a name="line.238"></a>
+<span class="sourceLineNo">239</span> * @param table updated table name<a
name="line.239"></a>
+<span class="sourceLineNo">240</span> * @param tablePerms new table
permissions<a name="line.240"></a>
+<span class="sourceLineNo">241</span> */<a name="line.241"></a>
+<span class="sourceLineNo">242</span> private void updateTableCache(TableName
table, ListMultimap<String, Permission> tablePerms) {<a
name="line.242"></a>
+<span class="sourceLineNo">243</span>
PermissionCache<TablePermission> cacheToUpdate =<a name="line.243"></a>
+<span class="sourceLineNo">244</span> tableCache.getOrDefault(table, new
PermissionCache<>());<a name="line.244"></a>
+<span class="sourceLineNo">245</span> clearCache(cacheToUpdate);<a
name="line.245"></a>
+<span class="sourceLineNo">246</span> updateCache(tablePerms,
cacheToUpdate);<a name="line.246"></a>
+<span class="sourceLineNo">247</span> tableCache.put(table,
cacheToUpdate);<a name="line.247"></a>
+<span class="sourceLineNo">248</span> mtime.incrementAndGet();<a
name="line.248"></a>
+<span class="sourceLineNo">249</span> }<a name="line.249"></a>
+<span class="sourceLineNo">250</span><a name="line.250"></a>
+<span class="sourceLineNo">251</span> /**<a name="line.251"></a>
+<span class="sourceLineNo">252</span> * Updates the internal namespace
permissions cache for specified namespace.<a name="line.252"></a>
+<span class="sourceLineNo">253</span> * @param namespace updated namespace<a
name="line.253"></a>
+<span class="sourceLineNo">254</span> * @param nsPerms new namespace
permissions<a name="line.254"></a>
+<span class="sourceLineNo">255</span> */<a name="line.255"></a>
+<span class="sourceLineNo">256</span> private void
updateNamespaceCache(String namespace,<a name="line.256"></a>
+<span class="sourceLineNo">257</span> ListMultimap<String,
Permission> nsPerms) {<a name="line.257"></a>
+<span class="sourceLineNo">258</span>
PermissionCache<NamespacePermission> cacheToUpdate =<a
name="line.258"></a>
+<span class="sourceLineNo">259</span>
namespaceCache.getOrDefault(namespace, new PermissionCache<>());<a
name="line.259"></a>
+<span class="sourceLineNo">260</span> clearCache(cacheToUpdate);<a
name="line.260"></a>
+<span class="sourceLineNo">261</span> updateCache(nsPerms,
cacheToUpdate);<a name="line.261"></a>
+<span class="sourceLineNo">262</span> namespaceCache.put(namespace,
cacheToUpdate);<a name="line.262"></a>
+<span class="sourceLineNo">263</span> mtime.incrementAndGet();<a
name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span><a name="line.265"></a>
+<span class="sourceLineNo">266</span> private void clearCache(PermissionCache
cacheToUpdate) {<a name="line.266"></a>
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name="line.267"></a>
+<span class="sourceLineNo">268</span> }<a name="line.268"></a>
+<span class="sourceLineNo">269</span><a name="line.269"></a>
+<span class="sourceLineNo">270</span> @SuppressWarnings("unchecked")<a
name="line.270"></a>
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updateCache(ListMultimap<String, ? extends Permission> newPermissions,<a
name="line.271"></a>
+<span class="sourceLineNo">272</span> PermissionCache cacheToUpdate) {<a
name="line.272"></a>
+<span class="sourceLineNo">273</span> for (String name :
newPermissions.keySet()) {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> for (Permission permission :
newPermissions.get(name)) {<a name="line.274"></a>
+<span class="sourceLineNo">275</span> cacheToUpdate.put(name,
permission);<a name="line.275"></a>
+<span class="sourceLineNo">276</span> }<a name="line.276"></a>
+<span class="sourceLineNo">277</span> }<a name="line.277"></a>
+<span class="sourceLineNo">278</span> }<a name="line.278"></a>
+<span class="sourceLineNo">279</span><a name="line.279"></a>
+<span class="sourceLineNo">280</span> /**<a name="line.280"></a>
+<span class="sourceLineNo">281</span> * Check if user has given action
privilige in global scope.<a name="line.281"></a>
+<span class="sourceLineNo">282</span> * @param user user name<a
name="line.282"></a>
+<span class="sourceLineNo">283</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.283"></a>
+<span class="sourceLineNo">284</span> * @return true if user has, false
otherwise<a name="line.284"></a>
+<span class="sourceLineNo">285</span> */<a name="line.285"></a>
+<span class="sourceLineNo">286</span> public boolean authorizeUserGlobal(User
user, Permission.Action action) {<a name="line.286"></a>
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name="line.287"></a>
+<span class="sourceLineNo">288</span> return false;<a name="line.288"></a>
+<span class="sourceLineNo">289</span> }<a name="line.289"></a>
+<span class="sourceLineNo">290</span> if
(authorizeGlobal(globalCache.get(user.getShortName()), action)) {<a
name="line.290"></a>
+<span class="sourceLineNo">291</span> return true;<a name="line.291"></a>
+<span class="sourceLineNo">292</span> }<a name="line.292"></a>
+<span class="sourceLineNo">293</span> for (String group :
user.getGroupNames()) {<a name="line.293"></a>
+<span class="sourceLineNo">294</span> if
(authorizeGlobal(globalCache.get(AuthUtil.toGroupEntry(group)), action)) {<a
name="line.294"></a>
+<span class="sourceLineNo">295</span> return true;<a
name="line.295"></a>
+<span class="sourceLineNo">296</span> }<a name="line.296"></a>
+<span class="sourceLineNo">297</span> }<a name="line.297"></a>
+<span class="sourceLineNo">298</span> return false;<a name="line.298"></a>
+<span class="sourceLineNo">299</span> }<a name="line.299"></a>
+<span class="sourceLineNo">300</span><a name="line.300"></a>
+<span class="sourceLineNo">301</span> private boolean
authorizeGlobal(GlobalPermission permissions, Permission.Action action) {<a
name="line.301"></a>
+<span class="sourceLineNo">302</span> return permissions != null &&
permissions.implies(action);<a name="line.302"></a>
+<span class="sourceLineNo">303</span> }<a name="line.303"></a>
+<span class="sourceLineNo">304</span><a name="line.304"></a>
+<span class="sourceLineNo">305</span> /**<a name="line.305"></a>
+<span class="sourceLineNo">306</span> * Check if user has given action
privilige in namespace scope.<a name="line.306"></a>
+<span class="sourceLineNo">307</span> * @param user user name<a
name="line.307"></a>
+<span class="sourceLineNo">308</span> * @param namespace namespace<a
name="line.308"></a>
+<span class="sourceLineNo">309</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.309"></a>
+<span class="sourceLineNo">310</span> * @return true if user has, false
otherwise<a name="line.310"></a>
+<span class="sourceLineNo">311</span> */<a name="line.311"></a>
+<span class="sourceLineNo">312</span> public boolean
authorizeUserNamespace(User user, String namespace, Permission.Action action)
{<a name="line.312"></a>
+<span class="sourceLineNo">313</span> if (user == null) {<a
name="line.313"></a>
+<span class="sourceLineNo">314</span> return false;<a name="line.314"></a>
+<span class="sourceLineNo">315</span> }<a name="line.315"></a>
+<span class="sourceLineNo">316</span> if (authorizeUserGlobal(user,
action)) {<a name="line.316"></a>
+<span class="sourceLineNo">317</span> return true;<a name="line.317"></a>
+<span class="sourceLineNo">318</span> }<a name="line.318"></a>
+<span class="sourceLineNo">319</span>
PermissionCache<NamespacePermission> nsPermissions =
namespaceCache.getOrDefault(namespace,<a name="line.319"></a>
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name="line.320"></a>
+<span class="sourceLineNo">321</span> if
(authorizeNamespace(nsPermissions.get(user.getShortName()), namespace, action))
{<a name="line.321"></a>
+<span class="sourceLineNo">322</span> return true;<a name="line.322"></a>
+<span class="sourceLineNo">323</span> }<a name="line.323"></a>
+<span class="sourceLineNo">324</span> for (String group :
user.getGroupNames()) {<a name="line.324"></a>
+<span class="sourceLineNo">325</span> if
(authorizeNamespace(nsPermissions.get(AuthUtil.toGroupEntry(group)), namespace,
action)) {<a name="line.325"></a>
+<span class="sourceLineNo">326</span> return true;<a
name="line.326"></a>
+<span class="sourceLineNo">327</span> }<a name="line.327"></a>
+<span class="sourceLineNo">328</span> }<a name="line.328"></a>
+<span class="sourceLineNo">329</span> return false;<a name="line.329"></a>
+<span class="sourceLineNo">330</span> }<a name="line.330"></a>
+<span class="sourceLineNo">331</span><a name="line.331"></a>
+<span class="sourceLineNo">332</span> private boolean
authorizeNamespace(Set<NamespacePermission> permissions,<a
name="line.332"></a>
+<span class="sourceLineNo">333</span> String namespace, Permission.Action
action) {<a name="line.333"></a>
+<span class="sourceLineNo">334</span> if (permissions == null) {<a
name="line.334"></a>
+<span class="sourceLineNo">335</span> return false;<a name="line.335"></a>
+<span class="sourceLineNo">336</span> }<a name="line.336"></a>
+<span class="sourceLineNo">337</span> for (NamespacePermission permission :
permissions) {<a name="line.337"></a>
+<span class="sourceLineNo">338</span> if (permission.implies(namespace,
action)) {<a name="line.338"></a>
+<span class="sourceLineNo">339</span> return true;<a
name="line.339"></a>
+<span class="sourceLineNo">340</span> }<a name="line.340"></a>
+<span class="sourceLineNo">341</span> }<a name="line.341"></a>
+<span class="sourceLineNo">342</span> return false;<a name="line.342"></a>
+<span class="sourceLineNo">343</span> }<a name="line.343"></a>
+<span class="sourceLineNo">344</span><a name="line.344"></a>
+<span class="sourceLineNo">345</span> /**<a name="line.345"></a>
+<span class="sourceLineNo">346</span> * Checks if the user has access to the
full table or at least a family/qualifier<a name="line.346"></a>
+<span class="sourceLineNo">347</span> * for the specified action.<a
name="line.347"></a>
+<span class="sourceLineNo">348</span> * @param user user name<a
name="line.348"></a>
+<span class="sourceLineNo">349</span> * @param table table name<a
name="line.349"></a>
+<span class="sourceLineNo">350</span> * @param action action in one of
[Read, Write, Create, Exec, Admin]<a name="line.350"></a>
+<span class="sourceLineNo">351</span> * @return true if the user has access
to the table, false otherwise<a name="line.351"></a>
+<span class="sourceLineNo">352</span> */<a name="line.352"></a>
+<span class="sourceLineNo">353</span> public boolean accessUserTable(User
user, TableName table, Permission.Action action) {<a name="line.353"></a>
+<span class="sourceLineNo">354</span> if (user == null) {<a
name="line.354"></a>
+<span class="sourceLineNo">355</span> return false;<a name="line.355"></a>
+<span class="sourceLineNo">356</span> }<a name="line.356"></a>
+<span class="sourceLineNo">357</span> if (table == null) {<a
name="line.357"></a>
+<span class="sourceLineNo">358</span> table =
AccessControlLists.ACL_TABLE_NAME;<a name="line.358"></a>
+<span class="sourceLineNo">359</span> }<a name="line.359"></a>
+<span class="sourceLineNo">360</span> if (authorizeUserNamespace(user,
table.getNamespaceAsString(), action)) {<a name="line.360"></a>
+<span class="sourceLineNo">361</span> return true;<a name="line.361"></a>
+<span class="sourceLineNo">362</span> }<a name="line.362"></a>
+<span class="sourceLineNo">363</span>
PermissionCache<TablePermission> tblPermissions =
tableCache.getOrDefault(table,<a name="line.363"></a>
+<span class="sourceLineNo">364</span> TBL_NO_PERMISSION);<a
name="line.364"></a>
+<span class="sourceLineNo">365</span> if
(hasAccessTable(tblPermissions.get(user.getShortName()), action)) {<a
name="line.365"></a>
+<span class="sourceLineNo">366</span> return true;<a name="line.366"></a>
+<span class="sourceLineNo">367</span> }<a name="line.367"></a>
+<span class="sourceLineNo">368</span> for (String group :
user.getGroupNames()) {<a name="line.368"></a>
+<span class="sourceLineNo">369</span> if
(hasAccessTable(tblPermissions.get(AuthUtil.toGroupEntry(group)), action)) {<a
name="line.369"></a>
+<span class="sourceLineNo">370</span> return true;<a
name="line.370"></a>
+<span class="sourceLineNo">371</span> }<a name="line.371"></a>
+<span class="sourceLineNo">372</span> }<a name="line.372"></a>
+<span class="sourceLineNo">373</span> return false;<a name="line.373"></a>
+<span class="sourceLineNo">374</span> }<a name="line.374"></a>
+<span class="sourceLineNo">375</span><a name="line.375"></a>
+<span class="sourceLineNo">376</span> private boolean
hasAccessTable(Set<TablePermission> permissions, Permission.Action
action) {<a name="line.376"></a>
+<span class="sourceLineNo">377</span> if (permissions == null) {<a
name="line.377"></a>
+<span class="sourceLineNo">378</span> return false;<a name="line.378"></a>
+<span class="sourceLineNo">379</span> }<a name="line.379"></a>
+<span class="sourceLineNo">380</span> for (TablePermission permission :
permissions) {<a name="line.380"></a>
+<span class="sourceLineNo">381</span> if (permission.implies(action)) {<a
name="line.381"></a>
+<span class="sourceLineNo">382</span> return true;<a
name="line.382"></a>
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+<span class="sourceLineNo">384</span> }<a name="line.384"></a>
+<span class="sourceLineNo">385</span> return false;<a name="line.385"></a>
+<span class="sourceLineNo">386</span> }<a name="line.386"></a>
+<span class="sourceLineNo">387</span><a name="line.387"></a>
+<span class="sourceLineNo">388</span> /**<a name="line.388"></a>
+<span class="sourceLineNo">389</span> * Check if user has given action
privilige in table scope.<a name="line.389"></a>
+<span class="sourceLineNo">390</span> * @param user user name<a
name="line.390"></a>
+<span class="sourceLineNo">391</span> * @param table table name<a
name="line.391"></a>
+<span class="sourceLineNo">392</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.392"></a>
+<span class="sourceLineNo">393</span> * @return true if user has, false
otherwise<a name="line.393"></a>
+<span class="sourceLineNo">394</span> */<a name="line.394"></a>
+<span class="sourceLineNo">395</span> public boolean authorizeUserTable(User
user, TableName table, Permission.Action action) {<a name="line.395"></a>
+<span class="sourceLineNo">396</span> return authorizeUserTable(user,
table, null, null, action);<a name="line.396"></a>
+<span class="sourceLineNo">397</span> }<a name="line.397"></a>
+<span class="sourceLineNo">398</span><a name="line.398"></a>
+<span class="sourceLineNo">399</span> /**<a name="line.399"></a>
+<span class="sourceLineNo">400</span> * Check if user has given action
privilige in table:family scope.<a name="line.400"></a>
+<span class="sourceLineNo">401</span> * @param user user name<a
name="line.401"></a>
+<span class="sourceLineNo">402</span> * @param table table name<a
name="line.402"></a>
+<span class="sourceLineNo">403</span> * @param family family name<a
name="line.403"></a>
+<span class="sourceLineNo">404</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.404"></a>
+<span class="sourceLineNo">405</span> * @return true if user has, false
otherwise<a name="line.405"></a>
+<span class="sourceLineNo">406</span> */<a name="line.406"></a>
+<span class="sourceLineNo">407</span> public boolean authorizeUserTable(User
user, TableName table, byte[] family,<a name="line.407"></a>
+<span class="sourceLineNo">408</span> Permission.Action action) {<a
name="line.408"></a>
+<span class="sourceLineNo">409</span> return authorizeUserTable(user,
table, family, null, action);<a name="line.409"></a>
+<span class="sourceLineNo">410</span> }<a name="line.410"></a>
+<span class="sourceLineNo">411</span><a name="line.411"></a>
+<span class="sourceLineNo">412</span> /**<a name="line.412"></a>
+<span class="sourceLineNo">413</span> * Check if user has given action
privilige in table:family:qualifier scope.<a name="line.413"></a>
+<span class="sourceLineNo">414</span> * @param user user name<a
name="line.414"></a>
+<span class="sourceLineNo">415</span> * @param table table name<a
name="line.415"></a>
+<span class="sourceLineNo">416</span> * @param family family name<a
name="line.416"></a>
+<span class="sourceLineNo">417</span> * @param qualifier qualifier name<a
name="line.417"></a>
+<span class="sourceLineNo">418</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.418"></a>
+<span class="sourceLineNo">419</span> * @return true if user has, false
otherwise<a name="line.419"></a>
+<span class="sourceLineNo">420</span> */<a name="line.420"></a>
+<span class="sourceLineNo">421</span> public boolean authorizeUserTable(User
user, TableName table, byte[] family,<a name="line.421"></a>
+<span class="sourceLineNo">422</span> byte[] qualifier, Permission.Action
action) {<a name="line.422"></a>
+<span class="sourceLineNo">423</span> if (user == null) {<a
name="line.423"></a>
+<span class="sourceLineNo">424</span> return false;<a name="line.424"></a>
+<span class="sourceLineNo">425</span> }<a name="line.425"></a>
+<span class="sourceLineNo">426</span> if (table == null) {<a
name="line.426"></a>
+<span class="sourceLineNo">427</span> table =
AccessControlLists.ACL_TABLE_NAME;<a name="line.427"></a>
+<span class="sourceLineNo">428</span> }<a name="line.428"></a>
+<span class="sourceLineNo">429</span> if (authorizeUserNamespace(user,
table.getNamespaceAsString(), action)) {<a name="line.429"></a>
+<span class="sourceLineNo">430</span> return true;<a name="line.430"></a>
+<span class="sourceLineNo">431</span> }<a name="line.431"></a>
+<span class="sourceLineNo">432</span>
PermissionCache<TablePermission> tblPermissions =
tableCache.getOrDefault(table,<a name="line.432"></a>
+<span class="sourceLineNo">433</span> TBL_NO_PERMISSION);<a
name="line.433"></a>
+<span class="sourceLineNo">434</span> if
(authorizeTable(tblPermissions.get(user.getShortName()), table, family,
qualifier, action)) {<a name="line.434"></a>
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+<span class="sourceLineNo">436</span> }<a name="line.436"></a>
+<span class="sourceLineNo">437</span> for (String group :
user.getGroupNames()) {<a name="line.437"></a>
+<span class="sourceLineNo">438</span> if
(authorizeTable(tblPermissions.get(AuthUtil.toGroupEntry(group)),<a
name="line.438"></a>
+<span class="sourceLineNo">439</span> table, family, qualifier,
action)) {<a name="line.439"></a>
+<span class="sourceLineNo">440</span> return true;<a
name="line.440"></a>
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+<span class="sourceLineNo">442</span> }<a name="line.442"></a>
+<span class="sourceLineNo">443</span> return false;<a name="line.443"></a>
+<span class="sourceLineNo">444</span> }<a name="line.444"></a>
+<span class="sourceLineNo">445</span><a name="line.445"></a>
+<span class="sourceLineNo">446</span> private boolean
authorizeTable(Set<TablePermission> permissions,<a name="line.446"></a>
+<span class="sourceLineNo">447</span> TableName table, byte[] family,
byte[] qualifier, Permission.Action action) {<a name="line.447"></a>
+<span class="sourceLineNo">448</span> if (permissions == null) {<a
name="line.448"></a>
+<span class="sourceLineNo">449</span> return false;<a name="line.449"></a>
+<span class="sourceLineNo">450</span> }<a name="line.450"></a>
+<span class="sourceLineNo">451</span> for (TablePermission permission :
permissions) {<a name="line.451"></a>
+<span class="sourceLineNo">452</span> if (permission.implies(table,
family, qualifier, action)) {<a name="line.452"></a>
+<span class="sourceLineNo">453</span> return true;<a
name="line.453"></a>
+<span class="sourceLineNo">454</span> }<a name="line.454"></a>
+<span class="sourceLineNo">455</span> }<a name="line.455"></a>
+<span class="sourceLineNo">456</span> return false;<a name="line.456"></a>
+<span class="sourceLineNo">457</span> }<a name="line.457"></a>
+<span class="sourceLineNo">458</span><a name="line.458"></a>
+<span class="sourceLineNo">459</span> /**<a name="line.459"></a>
+<span class="sourceLineNo">460</span> * Check if user has given action
privilige in table:family scope.<a name="line.460"></a>
+<span class="sourceLineNo">461</span> * This method is for backward
compatibility.<a name="line.461"></a>
+<span class="sourceLineNo">462</span> * @param user user name<a
name="line.462"></a>
+<span class="sourceLineNo">463</span> * @param table table name<a
name="line.463"></a>
+<span class="sourceLineNo">464</span> * @param family family names<a
name="line.464"></a>
+<span class="sourceLineNo">465</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.465"></a>
+<span class="sourceLineNo">466</span> * @return true if user has, false
otherwise<a name="line.466"></a>
+<span class="sourceLineNo">467</span> */<a name="line.467"></a>
+<span class="sourceLineNo">468</span> public boolean authorizeUserFamily(User
user, TableName table,<a name="line.468"></a>
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action) {<a name="line.469"></a>
+<span class="sourceLineNo">470</span>
PermissionCache<TablePermission> tblPermissions =
tableCache.getOrDefault(table,<a name="line.470"></a>
+<span class="sourceLineNo">471</span> TBL_NO_PERMISSION);<a
name="line.471"></a>
+<span class="sourceLineNo">472</span> if
(authorizeFamily(tblPermissions.get(user.getShortName()), table, family,
action)) {<a name="line.472"></a>
+<span class="sourceLineNo">473</span> return true;<a name="line.473"></a>
+<span class="sourceLineNo">474</span> }<a name="line.474"></a>
+<span class="sourceLineNo">475</span> for (String group :
user.getGroupNames()) {<a name="line.475"></a>
+<span class="sourceLineNo">476</span> if
(authorizeFamily(tblPermissions.get(AuthUtil.toGroupEntry(group)),<a
name="line.476"></a>
+<span class="sourceLineNo">477</span> table, family, action)) {<a
name="line.477"></a>
+<span class="sourceLineNo">478</span> return true;<a
name="line.478"></a>
+<span class="sourceLineNo">479</span> }<a name="line.479"></a>
+<span class="sourceLineNo">480</span> }<a name="line.480"></a>
+<span class="sourceLineNo">481</span> return false;<a name="line.481"></a>
+<span class="sourceLineNo">482</span> }<a name="line.482"></a>
+<span class="sourceLineNo">483</span><a name="line.483"></a>
+<span class="sourceLineNo">484</span> private boolean
authorizeFamily(Set<TablePermission> permissions,<a name="line.484"></a>
+<span class="sourceLineNo">485</span> TableName table, byte[] family,
Permission.Action action) {<a name="line.485"></a>
+<span class="sourceLineNo">486</span> if (permissions == null) {<a
name="line.486"></a>
+<span class="sourceLineNo">487</span> return false;<a name="line.487"></a>
+<span class="sourceLineNo">488</span> }<a name="line.488"></a>
+<span class="sourceLineNo">489</span> for (TablePermission permission :
permissions) {<a name="line.489"></a>
+<span class="sourceLineNo">490</span> if (permission.implies(table,
family, action)) {<a name="line.490"></a>
+<span class="sourceLineNo">491</span> return true;<a
name="line.491"></a>
+<span class="sourceLineNo">492</span> }<a name="line.492"></a>
+<span class="sourceLineNo">493</span> }<a name="line.493"></a>
+<span class="sourceLineNo">494</span> return false;<a name="line.494"></a>
+<span class="sourceLineNo">495</span> }<a name="line.495"></a>
+<span class="sourceLineNo">496</span><a name="line.496"></a>
+<span class="sourceLineNo">497</span> /**<a name="line.497"></a>
+<span class="sourceLineNo">498</span> * Check if user has given action
privilige in cell scope.<a name="line.498"></a>
+<span class="sourceLineNo">499</span> * @param user user name<a
name="line.499"></a>
+<span class="sourceLineNo">500</span> * @param table table name<a
name="line.500"></a>
+<span class="sourceLineNo">501</span> * @param cell cell to be checked<a
name="line.501"></a>
+<span class="sourceLineNo">502</span> * @param action one of action in
[Read, Write, Create, Exec, Admin]<a name="line.502"></a>
+<span class="sourceLineNo">503</span> * @return true if user has, false
otherwise<a name="line.503"></a>
+<span class="sourceLineNo">504</span> */<a name="line.504"></a>
+<span class="sourceLineNo">505</span> public boolean authorizeCell(User user,
TableName table, Cell cell, Permission.Action action) {<a name="line.505"></a>
+<span class="sourceLineNo">506</span> try {<a name="line.506"></a>
+<span class="sourceLineNo">507</span> List<Permission> perms =
AccessControlLists.getCellPermissionsForUser(user, cell);<a name="line.507"></a>
+<span class="sourceLineNo">508</span> if (LOG.isTraceEnabled()) {<a
name="line.508"></a>
+<span class="sourceLineNo">509</span> LOG.trace("Perms for user " +
user.getShortName() + " in cell " + cell + ": " +<a name="line.509"></a>
+<span class="sourceLineNo">510</span> (perms != null ? perms :
""));<a name="line.510"></a>
+<span class="sourceLineNo">511</span> }<a name="line.511"></a>
+<span class="sourceLineNo">512</span> if (perms != null) {<a
name="line.512"></a>
+<span class="sourceLineNo">513</span> for (Permission p: perms) {<a
name="line.513"></a>
+<span class="sourceLineNo">514</span> if (p.implies(action)) {<a
name="line.514"></a>
+<span class="sourceLineNo">515</span> return true;<a
name="line.515"></a>
+<span class="sourceLineNo">516</span> }<a name="line.516"></a>
+<span class="sourceLineNo">517</span> }<a name="line.517"></a>
+<span class="sourceLineNo">518</span> }<a name="line.518"></a>
+<span class="sourceLineNo">519</span> } catch (IOException e) {<a
name="line.519"></a>
+<span class="sourceLineNo">520</span> // We failed to parse the KV tag<a
name="line.520"></a>
+<span class="sourceLineNo">521</span> LOG.error("Failed parse of ACL tag
in cell " + cell);<a name="line.521"></a>
+<span class="sourceLineNo">522</span> // Fall through to check with the
table and CF perms we were able<a name="line.522"></a>
+<span class="sourceLineNo">523</span> // to collect regardless<a
name="line.523"></a>
+<span class="sourceLineNo">524</span> }<a name="line.524"></a>
+<span class="sourceLineNo">525</span> return false;<a name="line.525"></a>
+<span class="sourceLineNo">526</span> }<a name="line.526"></a>
+<span class="sourceLineNo">527</span><a name="line.527"></a>
+<span class="sourceLineNo">528</span> /**<a name="line.528"></a>
+<span class="sourceLineNo">529</span> * Remove given namespace from
AuthManager's namespace cache.<a name="line.529"></a>
+<span class="sourceLineNo">530</span> * @param ns namespace<a
name="line.530"></a>
+<span class="sourceLineNo">531</span> */<a name="line.531"></a>
+<span class="sourceLineNo">532</span> public void removeNamespace(byte[] ns)
{<a name="line.532"></a>
+<span class="sourceLineNo">533</span>
namespaceCache.remove(Bytes.toString(ns));<a name="line.533"></a>
+<span class="sourceLineNo">534</span> }<a name="line.534"></a>
+<span class="sourceLineNo">535</span><a name="line.535"></a>
+<span class="sourceLineNo">536</span> /**<a name="line.536"></a>
+<span class="sourceLineNo">537</span> * Remove given table from
AuthManager's table cache.<a name="line.537"></a>
+<span class="sourceLineNo">538</span> * @param table table name<a
name="line.538"></a>
+<span class="sourceLineNo">539</span> */<a name="line.539"></a>
+<span class="sourceLineNo">540</span> public void removeTable(TableName
table) {<a name="line.540"></a>
+<span class="sourceLineNo">541</span> tableCache.remove(table);<a
name="line.541"></a>
+<span class="sourceLineNo">542</span> }<a name="line.542"></a>
+<span class="sourceLineNo">543</span><a name="line.543"></a>
+<span class="sourceLineNo">544</span> /**<a name="line.544"></a>
+<span class="sourceLineNo">545</span> * Last modification logical time<a
name="line.545"></a>
+<span class="sourceLineNo">546</span> * @return time<a name="line.546"></a>
+<span class="sourceLineNo">547</span> */<a name="line.547"></a>
+<span class="sourceLineNo">548</span> public long getMTime() {<a
name="line.548"></a>
+<span class="sourceLineNo">549</span> return mtime.get();<a
name="line.549"></a>
+<span class="sourceLineNo">550</span> }<a name="line.550"></a>
+<span class="sourceLineNo">551</span><a name="line.551"></a>
+<span class="sourceLineNo">552</span> private static Map<ZKWatcher,
AuthManager> managerMap = new HashMap<>();<a name="line.552"></a>
+<span class="sourceLineNo">553</span><a name="line.553"></a>
+<span class="sourceLineNo">554</span> private static Map<AuthManager,
Integer> refCount = new HashMap<>();<a name="line.554"></a>
+<span class="sourceLineNo">555</span><a name="line.555"></a>
+<span class="sourceLineNo">556</span> /**<a name="line.556"></a>
+<span class="sourceLineNo">557</span> * Returns a AuthManager from the
cache. If not cached, constructs a new one.<a name="line.557"></a>
+<span class="sourceLineNo">558</span> * Returned instance should be released
back by calling {@link #release(AuthManager)}.<a name="line.558"></a>
+<span class="sourceLineNo">559</span> * @param watcher zk watcher<a
name="line.559"></a>
+<span class="sourceLineNo">560</span> * @param conf configuration<a
name="line.560"></a>
+<span class="sourceLineNo">561</span> * @return an AuthManager<a
name="line.561"></a>
+<span class="sourceLineNo">562</span> * @throws IOException zookeeper
initialization failed<a name="line.562"></a>
+<span class="sourceLineNo">563</span> */<a name="line.563"></a>
+<span class="sourceLineNo">564</span> public synchronized static AuthManager
getOrCreate(<a name="line.564"></a>
+<span class="sourceLineNo">565</span> ZKWatcher watcher, Configuration
conf) throws IOException {<a name="line.565"></a>
+<span class="sourceLineNo">566</span> AuthManager instance =
managerMap.get(watcher);<a name="line.566"></a>
+<span class="sourceLineNo">567</span> if (instance == null) {<a
name="line.567"></a>
+<span class="sourceLineNo">568</span> instance = new AuthManager(watcher,
conf);<a name="line.568"></a>
+<span class="sourceLineNo">569</span> managerMap.put(watcher,
instance);<a name="line.569"></a>
+<span class="sourceLineNo">570</span> }<a name="line.570"></a>
+<span class="sourceLineNo">571</span> int ref = refCount.get(instance) ==
null ? 0 : refCount.get(instance);<a name="line.571"></a>
+<span class="sourceLineNo">572</span> refCount.put(instance, ref + 1);<a
name="line.572"></a>
+<span class="sourceLineNo">573</span> return instance;<a
name="line.573"></a>
+<span class="sourceLineNo">574</span> }<a name="line.574"></a>
+<span class="sourceLineNo">575</span><a name="line.575"></a>
+<span class="sourceLineNo">576</span> @VisibleForTesting<a
name="line.576"></a>
+<span class="sourceLineNo">577</span> public static int getTotalRefCount()
{<a name="line.577"></a>
+<span class="sourceLineNo">578</span> int total = 0;<a name="line.578"></a>
+<span class="sourceLineNo">579</span> for (int count : refCount.values())
{<a name="line.579"></a>
+<span class="sourceLineNo">580</span> total += count;<a
name="line.580"></a>
+<span class="sourceLineNo">581</span> }<a name="line.581"></a>
+<span class="sourceLineNo">582</span> return total;<a name="line.582"></a>
+<span class="sourceLineNo">583</span> }<a name="line.583"></a>
+<span class="sourceLineNo">584</span><a name="line.584"></a>
+<span class="sourceLineNo">585</span> /**<a name="line.585"></a>
+<span class="sourceLineNo">586</span> * Releases the resources for the given
AuthManager if the reference count is down to 0.<a name="line.586"></a>
+<span class="sourceLineNo">587</span> * @param instance AuthManager to be
released<a name="line.587"></a>
+<span class="sourceLineNo">588</span> */<a name="line.588"></a>
+<span class="sourceLineNo">589</span> public synchronized static void
release(AuthManager instance) {<a name="line.589"></a>
+<span class="sourceLineNo">590</span> if (refCount.get(instance) == null ||
refCount.get(instance) < 1) {<a name="line.590"></a>
+<span class="sourceLineNo">591</span> String msg = "Something wrong with
the AuthManager reference counting: " + instance<a name="line.591"></a>
+<span class="sourceLineNo">592</span> + " whose count is " +
refCount.get(instance);<a name="line.592"></a>
+<span class="sourceLineNo">593</span> LOG.error(HBaseMarkers.FATAL,
msg);<a name="line.593"></a>
+<span class="sourceLineNo">594</span> instance.close();<a
name="line.594"></a>
+<span class="sourceLineNo">595</span>
managerMap.remove(instance.getZKPermissionWatcher().getWatcher());<a
name="line.595"></a>
+<span class="sourceLineNo">596</span>
instance.getZKPermissionWatcher().getWatcher().abort(msg, null);<a
name="line.596"></a>
+<span class="sourceLineNo">597</span> } else {<a name="line.597"></a>
+<span class="sourceLineNo">598</span> int ref = refCount.get(instance);<a
name="line.598"></a>
+<span class="sourceLineNo">599</span> --ref;<a name="line.599"></a>
+<span class="sourceLineNo">600</span> refCount.put(instance, ref);<a
name="line.600"></a>
+<span class="sourceLineNo">601</span> if (ref == 0) {<a
name="line.601"></a>
+<span class="sourceLineNo">602</span> instance.close();<a
name="line.602"></a>
+<span class="sourceLineNo">603</span>
managerMap.remove(instance.getZKPermissionWatcher().getWatcher());<a
name="line.603"></a>
+<span class="sourceLineNo">604</span> refCount.remove(instance);<a
name="line.604"></a>
+<span class="sourceLineNo">605</span> }<a name="line.605"></a>
+<span class="sourceLineNo">606</span> }<a name="line.606"></a>
+<span class="sourceLineNo">607</span> }<a name="line.607"></a>
+<span class="sourceLineNo">608</span>}<a name="line.608"></a>
+
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+</pre>
+</div>
+</body>
+</html>