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1
28 package net.sf.jguard.core.authorization.policy;
29
30 import java.io.File  ;
31 import java.security.Policy ;
32 import java.util.Enumeration ;
33 import java.util.Properties ;
34 import java.util.logging.Level ;
35 import java.util.logging.Logger ;
36
37
41 public class PolicyHelper {
42
43 public static final String GNU_JAVA_SECURITY_POLICY_FILE = "gnu.java.security.PolicyFile";
45 private static final String COM_SUN_SECURITY_AUTH_POLICY_FILE = "com.sun.security.auth.PolicyFile";
46 public static final String SUN_SECURITY_PROVIDER_POLICY_FILE = "sun.security.provider.PolicyFile";
47
48 private static Logger logger = Logger.getLogger(PolicyHelper.class.getName());
49
50
54 public static void installPolicyOnJVM() {
55
56 Policy runtimePolicy = Policy.getPolicy();
57
58 if(!(runtimePolicy.getClass().getName().equals(MultipleAppPolicy.class.getName()))){
60
61 logger.log(Level.INFO,"init() - JGuardPolicy is not set as the policy provider . the actual policy provider is '"+ runtimePolicy.getClass().getName()+"' which is different of '"+MultipleAppPolicy.class.getName()+"' ");
62 logger.log(Level.INFO,"init() - if you want the jGuard policy 'governs' all java applications (one choice among others described in the jGuard documentation),");
63 logger.log(Level.INFO,"init() - please correct the 'policy.provider' property (policy.provider=net.sf.jguard.core.JGuardPolicy) in your 'java.security' file,");
64 logger.log(Level.INFO,"init() - located in this directory: "+ System.getProperty("java.home") + File.separator+ "lib"+ File.separator + "security"+ File.separator);
65
66 try {
67 try {
69 Class clazz = Class.forName(PolicyHelper.COM_SUN_SECURITY_AUTH_POLICY_FILE);
70 javax.security.auth.Policy.setPolicy((javax.security.auth.Policy )clazz.newInstance());
72 } catch (ClassNotFoundException e) {
73 logger.log(Level.WARNING,"com.sun.security.auth.PolicyFile is not reachable.\n we cannot set the old javax.security.auth.Policy implementation to it\n "+e.getMessage());
74 }
75
76 Policy.setPolicy(new MultipleAppPolicy(Policy.getPolicy()));
78
79 } catch (InstantiationException e) {
80 logger.log(Level.SEVERE,"init() - Policy Implementation cannot be instantiated : InstantiationException"+e.getMessage());
81 } catch (IllegalAccessException e) {
82 logger.log(Level.SEVERE,"init() - Policy Implementation cannot be accessed : IllegalAccessException"+e.getMessage());
83 }catch(SecurityException e){
84 logger.log(Level.SEVERE,"init() - Policy Implementation cannot be defined : SecurityException . you haven't got the right to set the java policy"+e.getMessage());
85 }
86 }
87
88 try{
89
90 logger.log(Level.FINE,"System properties : \n");
91 Properties props = System.getProperties();
92 Enumeration enumeration = props.keys();
93 while(enumeration.hasMoreElements()){
94 String key = (String )enumeration.nextElement();
95 String value = (String )props.get(key);
96 logger.log(Level.FINE,key+"="+value);
97 }
98
99 }catch(SecurityException sex){
100 logger.log(Level.WARNING,"you have not the permission to grab system properties ");
101 }
102
103 }
104
105
109 public static Class findDefaultPolicy(){
110 String [] policies = {PolicyHelper.SUN_SECURITY_PROVIDER_POLICY_FILE,PolicyHelper.GNU_JAVA_SECURITY_POLICY_FILE};
112 Class defaultPolicyClass = null;
113 for(int i = 0; i< policies.length;i++){
114 try {
115 defaultPolicyClass = Class.forName(policies[i]);
116 } catch (ClassNotFoundException e) {
117 logger.log(Level.FINE,"findDefaultPolicy() - " + policies[i]+ " is not the defaultPolicy class ");
118 i++;
119 continue;
120 }
121 logger.log(Level.FINE,"findDefaultPolicy() - " + policies[i]+ " is the defaultPolicy class ");
122 break;
123 }
124 if(null == defaultPolicyClass){
125 logger.log(Level.FINE,"findDefaultPolicy() - no defaultPolicy class has been found ");
126 }
127 return defaultPolicyClass;
128 }
129
130
131 }
132 |
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