Wed, 31 Dec 2014 07:22:50 +0100
Correct previous dual key logic pending first delivery installment.
1 /*
2 * ====================================================================
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ====================================================================
19 *
20 * This software consists of voluntary contributions made by many
21 * individuals on behalf of the Apache Software Foundation. For more
22 * information on the Apache Software Foundation, please see
23 * <http://www.apache.org/>.
24 *
25 */
27 package ch.boye.httpclientandroidlib.auth;
29 import java.util.Locale;
31 import ch.boye.httpclientandroidlib.annotation.Immutable;
33 import ch.boye.httpclientandroidlib.util.LangUtils;
35 /**
36 * The class represents an authentication scope consisting of a host name,
37 * a port number, a realm name and an authentication scheme name which
38 * {@link Credentials Credentials} apply to.
39 *
40 *
41 * @since 4.0
42 */
43 @Immutable
44 public class AuthScope {
46 /**
47 * The <tt>null</tt> value represents any host. In the future versions of
48 * HttpClient the use of this parameter will be discontinued.
49 */
50 public static final String ANY_HOST = null;
52 /**
53 * The <tt>-1</tt> value represents any port.
54 */
55 public static final int ANY_PORT = -1;
57 /**
58 * The <tt>null</tt> value represents any realm.
59 */
60 public static final String ANY_REALM = null;
62 /**
63 * The <tt>null</tt> value represents any authentication scheme.
64 */
65 public static final String ANY_SCHEME = null;
67 /**
68 * Default scope matching any host, port, realm and authentication scheme.
69 * In the future versions of HttpClient the use of this parameter will be
70 * discontinued.
71 */
72 public static final AuthScope ANY = new AuthScope(ANY_HOST, ANY_PORT, ANY_REALM, ANY_SCHEME);
74 /** The authentication scheme the credentials apply to. */
75 private final String scheme;
77 /** The realm the credentials apply to. */
78 private final String realm;
80 /** The host the credentials apply to. */
81 private final String host;
83 /** The port the credentials apply to. */
84 private final int port;
86 /** Creates a new credentials scope for the given
87 * <tt>host</tt>, <tt>port</tt>, <tt>realm</tt>, and
88 * <tt>authentication scheme</tt>.
89 *
90 * @param host the host the credentials apply to. May be set
91 * to <tt>null</tt> if credentials are applicable to
92 * any host.
93 * @param port the port the credentials apply to. May be set
94 * to negative value if credentials are applicable to
95 * any port.
96 * @param realm the realm the credentials apply to. May be set
97 * to <tt>null</tt> if credentials are applicable to
98 * any realm.
99 * @param scheme the authentication scheme the credentials apply to.
100 * May be set to <tt>null</tt> if credentials are applicable to
101 * any authentication scheme.
102 */
103 public AuthScope(final String host, int port,
104 final String realm, final String scheme)
105 {
106 this.host = (host == null) ? ANY_HOST: host.toLowerCase(Locale.ENGLISH);
107 this.port = (port < 0) ? ANY_PORT: port;
108 this.realm = (realm == null) ? ANY_REALM: realm;
109 this.scheme = (scheme == null) ? ANY_SCHEME: scheme.toUpperCase(Locale.ENGLISH);
110 }
112 /** Creates a new credentials scope for the given
113 * <tt>host</tt>, <tt>port</tt>, <tt>realm</tt>, and any
114 * authentication scheme.
115 *
116 * @param host the host the credentials apply to. May be set
117 * to <tt>null</tt> if credentials are applicable to
118 * any host.
119 * @param port the port the credentials apply to. May be set
120 * to negative value if credentials are applicable to
121 * any port.
122 * @param realm the realm the credentials apply to. May be set
123 * to <tt>null</tt> if credentials are applicable to
124 * any realm.
125 */
126 public AuthScope(final String host, int port, final String realm) {
127 this(host, port, realm, ANY_SCHEME);
128 }
130 /** Creates a new credentials scope for the given
131 * <tt>host</tt>, <tt>port</tt>, any realm name, and any
132 * authentication scheme.
133 *
134 * @param host the host the credentials apply to. May be set
135 * to <tt>null</tt> if credentials are applicable to
136 * any host.
137 * @param port the port the credentials apply to. May be set
138 * to negative value if credentials are applicable to
139 * any port.
140 */
141 public AuthScope(final String host, int port) {
142 this(host, port, ANY_REALM, ANY_SCHEME);
143 }
145 /**
146 * Creates a copy of the given credentials scope.
147 */
148 public AuthScope(final AuthScope authscope) {
149 super();
150 if (authscope == null) {
151 throw new IllegalArgumentException("Scope may not be null");
152 }
153 this.host = authscope.getHost();
154 this.port = authscope.getPort();
155 this.realm = authscope.getRealm();
156 this.scheme = authscope.getScheme();
157 }
159 /**
160 * @return the host
161 */
162 public String getHost() {
163 return this.host;
164 }
166 /**
167 * @return the port
168 */
169 public int getPort() {
170 return this.port;
171 }
173 /**
174 * @return the realm name
175 */
176 public String getRealm() {
177 return this.realm;
178 }
180 /**
181 * @return the scheme type
182 */
183 public String getScheme() {
184 return this.scheme;
185 }
187 /**
188 * Tests if the authentication scopes match.
189 *
190 * @return the match factor. Negative value signifies no match.
191 * Non-negative signifies a match. The greater the returned value
192 * the closer the match.
193 */
194 public int match(final AuthScope that) {
195 int factor = 0;
196 if (LangUtils.equals(this.scheme, that.scheme)) {
197 factor += 1;
198 } else {
199 if (this.scheme != ANY_SCHEME && that.scheme != ANY_SCHEME) {
200 return -1;
201 }
202 }
203 if (LangUtils.equals(this.realm, that.realm)) {
204 factor += 2;
205 } else {
206 if (this.realm != ANY_REALM && that.realm != ANY_REALM) {
207 return -1;
208 }
209 }
210 if (this.port == that.port) {
211 factor += 4;
212 } else {
213 if (this.port != ANY_PORT && that.port != ANY_PORT) {
214 return -1;
215 }
216 }
217 if (LangUtils.equals(this.host, that.host)) {
218 factor += 8;
219 } else {
220 if (this.host != ANY_HOST && that.host != ANY_HOST) {
221 return -1;
222 }
223 }
224 return factor;
225 }
227 /**
228 * @see java.lang.Object#equals(Object)
229 */
230 @Override
231 public boolean equals(Object o) {
232 if (o == null) {
233 return false;
234 }
235 if (o == this) {
236 return true;
237 }
238 if (!(o instanceof AuthScope)) {
239 return super.equals(o);
240 }
241 AuthScope that = (AuthScope) o;
242 return
243 LangUtils.equals(this.host, that.host)
244 && this.port == that.port
245 && LangUtils.equals(this.realm, that.realm)
246 && LangUtils.equals(this.scheme, that.scheme);
247 }
249 /**
250 * @see java.lang.Object#toString()
251 */
252 @Override
253 public String toString() {
254 StringBuilder buffer = new StringBuilder();
255 if (this.scheme != null) {
256 buffer.append(this.scheme.toUpperCase(Locale.ENGLISH));
257 buffer.append(' ');
258 }
259 if (this.realm != null) {
260 buffer.append('\'');
261 buffer.append(this.realm);
262 buffer.append('\'');
263 } else {
264 buffer.append("<any realm>");
265 }
266 if (this.host != null) {
267 buffer.append('@');
268 buffer.append(this.host);
269 if (this.port >= 0) {
270 buffer.append(':');
271 buffer.append(this.port);
272 }
273 }
274 return buffer.toString();
275 }
277 /**
278 * @see java.lang.Object#hashCode()
279 */
280 @Override
281 public int hashCode() {
282 int hash = LangUtils.HASH_SEED;
283 hash = LangUtils.hashCode(hash, this.host);
284 hash = LangUtils.hashCode(hash, this.port);
285 hash = LangUtils.hashCode(hash, this.realm);
286 hash = LangUtils.hashCode(hash, this.scheme);
287 return hash;
288 }
289 }