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1
25
26 package org.snipsnap.user;
27
28 import org.radeox.util.logging.Logger;
29
30 import java.util.HashMap  ;
31 import java.util.Iterator ;
32 import java.util.Map ;
33 import java.util.StringTokenizer ;
34
35
42
43 public class Permissions {
44 public final static String EDIT_SNIP = "Edit";
45 public final static String ATTACH_TO_SNIP = "Attach";
46 public final static String POST_TO_SNIP = "Post";
47
48 private Map permissions;
49
50 public Permissions() {
51 }
52
53 public Permissions(Map permissions) {
54 this.permissions = permissions;
55 }
56
57 public Permissions(String permissions) {
58 this.permissions = deserialize(permissions);
60 }
61
62 private void init() {
63 if (null == permissions) {
64 permissions = new HashMap ();
65 }
66 }
67
68 public String toString() {
69 return serialize();
70 }
71
72 public boolean empty() {
73 return null == permissions || permissions.isEmpty();
74 }
75
76 public void remove(String permission, String role) {
77 init();
78 if (permissions.containsKey(permission)) {
79 Roles roles = (Roles) permissions.get(permission);
80 roles.remove(role);
81 if (roles.isEmpty()) {
83 Logger.debug("Empty.");
84 permissions.remove(permission);
85 } else {
86 Logger.debug("not Empty." + permissions.toString());
87 }
88 }
89 }
90
91 public void add(String permission) {
92 init();
93 if (!permissions.containsKey(permission)) {
94 permissions.put(permission, new Roles());
95 }
96 }
97
98 public void add(String permission, String role) {
99 init();
100 if (!permissions.containsKey(permission)) {
101 permissions.put(permission, new Roles());
102 }
103 ((Roles) permissions.get(permission)).add(role);
104 return;
105 }
106
107 public void add(String permission, Roles roles) {
108 init();
109 if (!permissions.containsKey(permission)) {
110 permissions.put(permission, new Roles());
111 }
112 ((Roles) permissions.get(permission)).addAll(roles);
113 return;
114 }
115
116 public boolean exists(String permission, Roles roles) {
117 if (null == permissions || !permissions.containsKey(permission)) { return false; }
119 Roles permRoles = (Roles) permissions.get(permission);
120 return permRoles.containsAny(roles);
121 }
122
123 public boolean check(String permission, Roles roles) {
124 if (null == permissions || !permissions.containsKey(permission)) { return true; }
126 Roles permRoles = (Roles) permissions.get(permission);
127 return permRoles.containsAny(roles);
133 }
134
135 public Map deserialize(String permissions) {
136 Map perms = new HashMap ();
137 if (permissions == null || "".equals(permissions)) { return perms; }
138
139 StringTokenizer tokenizer = new StringTokenizer (permissions, "|");
140 while (tokenizer.hasMoreTokens()) {
141 String permission = tokenizer.nextToken();
142 Roles roles = getRoles(permission);
143 permission = getPermission(permission);
144 perms.put(permission, roles);
145 }
146
147 return perms;
148 }
149
150 private String serialize() {
151 if (null == permissions || permissions.isEmpty()) { return ""; }
152
153 StringBuffer permBuffer = new StringBuffer ();
154 Iterator iterator = permissions.keySet().iterator();
155 while (iterator.hasNext()) {
156 String permission = (String ) iterator.next();
157 permBuffer.append(permission);
158 permBuffer.append(":");
159 Roles roles = (Roles) permissions.get(permission);
160 Iterator rolesIterator = roles.iterator();
161 while (rolesIterator.hasNext()) {
162 String role = (String ) rolesIterator.next();
163 permBuffer.append(role);
164 if (rolesIterator.hasNext()) {
165 permBuffer.append(",");
166 }
167 }
168 if (iterator.hasNext()) {
169 permBuffer.append("|");
170 }
171 }
172 return permBuffer.toString();
173 }
174
175 private String after(String string, String delimiter) {
176 return string.substring(string.indexOf(delimiter) + 1);
177 }
178
179 private String before(String string, String delimiter) {
180 return string.substring(0, string.indexOf(delimiter));
181 }
182
183 private String getPermission(String rolesString) {
184 return before(rolesString, ":");
185 }
186
187 private Roles getRoles(String rolesString) {
188 Roles roles = new Roles();
189 StringTokenizer tokenizer = new StringTokenizer (after(rolesString, ":"), ",");
190 while (tokenizer.hasMoreTokens()) {
191 String role = tokenizer.nextToken();
192 roles.add(role);
193 }
194 return roles;
195 }
196
197 }
198 |
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