SessionHandlerBean.java
4.41 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
package fi.insomnia.bortal.beans;
import java.security.Principal;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
import java.util.Vector;
import javax.annotation.Resource;
import javax.annotation.security.DeclareRoles;
import javax.ejb.EJB;
import javax.ejb.SessionContext;
import javax.ejb.Stateless;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import fi.insomnia.bortal.facade.AccessRightFacade;
import fi.insomnia.bortal.facade.RoleFacade;
import fi.insomnia.bortal.facade.UserFacade;
import fi.insomnia.bortal.model.AccessRight;
import fi.insomnia.bortal.model.Event;
import fi.insomnia.bortal.model.Role;
import fi.insomnia.bortal.model.RoleRight;
import fi.insomnia.bortal.model.User;
/**
* Session Bean implementation class SessionHandlerBean
*/
@Stateless
@DeclareRoles("admin")
public class SessionHandlerBean implements SessionHandlerBeanLocal, SessionHandlerBeanRemote {
private static final Logger logger = LoggerFactory.getLogger(SessionHandlerBean.class);
@EJB
private UserFacade userfacade;
@EJB
private AccessRightFacade accessRightFacade;
@EJB
private RoleFacade roleFacade;
@Resource
private SessionContext context;
@EJB
private UserBean userbean;
/**
* Default constructor.
*/
public SessionHandlerBean() {
// TODO Auto-generated constructor stub
}
@Override
public boolean hasPermission(String target, User user, RolePermission permission) {
if (user == null) {
return false;
}
AccessRight expectedRight = accessRightFacade.findOrCreateByName(target);
User dbusr = userfacade.find(user.getId());
if (dbusr != null) {
Set<Role> checkedRoles = new HashSet<Role>();
for (Role r : dbusr.getRoles()) {
if (getRights(r, expectedRight, permission, checkedRoles)) {
return true;
}
}
}
return false;
}
private static boolean getRights(Role role, AccessRight expectedRight, RolePermission permission, Set<Role> checkedRoles) {
if (checkedRoles.contains(role)) {
return false;
}
for (RoleRight rr : role.getRoleRights()) {
if (rr.getAccessRight().equals(expectedRight)) {
switch (permission) {
case READ:
if (rr.getRead()) {
return true;
}
break;
case WRITE:
if (rr.getWrite()) {
return true;
}
break;
case EXECUTE:
if (rr.isExecute()) {
return true;
}
}
}
}
checkedRoles.add(role);
for (Role r : role.getParents()) {
if (getRights(r, expectedRight, permission, checkedRoles)) {
return true;
}
}
return false;
}
public User tryLogin(String username, String password) {
User user = userfacade.findByLogin(username.trim());
if (user != null && user.checkPassword(password)) {
return user;
}
return null;
}
/**
* Makes sure default user and public role exist and the user is member of
* the role.
*/
public User getDefaultUser(Event event) {
Role publicRole = roleFacade.getOrCreatePublicRole(event);
User defaultUser = userfacade.getOrCreateDefaultUser();
if (!defaultUser.getRoles().contains(publicRole)) {
ArrayList<Role> userRoles = new ArrayList<Role>();
userRoles.add(publicRole);
defaultUser.setRoles(userRoles);
}
return defaultUser;
}
@Override
public boolean authenticate(String username, String password) {
return (tryLogin(username, password) != null);
}
@Override
public Enumeration<String> getGroupNames(String user) {
Vector<String> foo = new Vector<String>();
foo.add("admin");
return foo.elements();
}
@Override
public User getCurrentUser(Event event) {
Principal principal = context.getCallerPrincipal();
User ret = userbean.getUser(principal.getName());
if (ret == null) {
ret = getDefaultUser(event);
}
return ret;
}
}