1 | // License: GPL. For details, see LICENSE file.
|
---|
2 | package org.openstreetmap.josm.io;
|
---|
3 |
|
---|
4 | import static org.openstreetmap.josm.tools.I18n.tr;
|
---|
5 |
|
---|
6 | import java.io.IOException;
|
---|
7 | import java.net.InetSocketAddress;
|
---|
8 | import java.net.Proxy;
|
---|
9 | import java.net.Proxy.Type;
|
---|
10 | import java.net.ProxySelector;
|
---|
11 | import java.net.SocketAddress;
|
---|
12 | import java.net.URI;
|
---|
13 | import java.util.Collections;
|
---|
14 | import java.util.HashSet;
|
---|
15 | import java.util.List;
|
---|
16 | import java.util.Set;
|
---|
17 | import java.util.TreeSet;
|
---|
18 |
|
---|
19 | import org.openstreetmap.josm.Main;
|
---|
20 | import org.openstreetmap.josm.gui.preferences.server.ProxyPreferencesPanel;
|
---|
21 | import org.openstreetmap.josm.gui.preferences.server.ProxyPreferencesPanel.ProxyPolicy;
|
---|
22 |
|
---|
23 | /**
|
---|
24 | * This is the default proxy selector used in JOSM.
|
---|
25 | *
|
---|
26 | */
|
---|
27 | public class DefaultProxySelector extends ProxySelector {
|
---|
28 | /**
|
---|
29 | * The {@link ProxySelector} provided by the JDK will retrieve proxy information
|
---|
30 | * from the system settings, if the system property <tt>java.net.useSystemProxies</tt>
|
---|
31 | * is defined <strong>at startup</strong>. It has no effect if the property is set
|
---|
32 | * later by the application.
|
---|
33 | *
|
---|
34 | * We therefore read the property at class loading time and remember it's value.
|
---|
35 | */
|
---|
36 | private static boolean JVM_WILL_USE_SYSTEM_PROXIES = false;
|
---|
37 | static {
|
---|
38 | String v = System.getProperty("java.net.useSystemProxies");
|
---|
39 | if (v != null && v.equals(Boolean.TRUE.toString())) {
|
---|
40 | JVM_WILL_USE_SYSTEM_PROXIES = true;
|
---|
41 | }
|
---|
42 | }
|
---|
43 |
|
---|
44 | /**
|
---|
45 | * The {@link ProxySelector} provided by the JDK will retrieve proxy information
|
---|
46 | * from the system settings, if the system property <tt>java.net.useSystemProxies</tt>
|
---|
47 | * is defined <strong>at startup</strong>. If the property is set later by the application,
|
---|
48 | * this has no effect.
|
---|
49 | *
|
---|
50 | * @return true, if <tt>java.net.useSystemProxies</tt> was set to true at class initialization time
|
---|
51 | *
|
---|
52 | */
|
---|
53 | public static boolean willJvmRetrieveSystemProxies() {
|
---|
54 | return JVM_WILL_USE_SYSTEM_PROXIES;
|
---|
55 | }
|
---|
56 |
|
---|
57 | private ProxyPolicy proxyPolicy;
|
---|
58 | private InetSocketAddress httpProxySocketAddress;
|
---|
59 | private InetSocketAddress socksProxySocketAddress;
|
---|
60 | private ProxySelector delegate;
|
---|
61 |
|
---|
62 | private final Set<String> errorResources = new HashSet<String>();
|
---|
63 | private final Set<String> errorMessages = new HashSet<String>();
|
---|
64 |
|
---|
65 | /**
|
---|
66 | * A typical example is:
|
---|
67 | * <pre>
|
---|
68 | * PropertySelector delegate = PropertySelector.getDefault();
|
---|
69 | * PropertySelector.setDefault(new DefaultPropertySelector(delegate));
|
---|
70 | * </pre>
|
---|
71 | *
|
---|
72 | * @param delegate the proxy selector to delegate to if system settings are used. Usually
|
---|
73 | * this is the proxy selector found by ProxySelector.getDefault() before this proxy
|
---|
74 | * selector is installed
|
---|
75 | */
|
---|
76 | public DefaultProxySelector(ProxySelector delegate) {
|
---|
77 | this.delegate = delegate;
|
---|
78 | initFromPreferences();
|
---|
79 | }
|
---|
80 |
|
---|
81 | protected int parseProxyPortValue(String property, String value) {
|
---|
82 | if (value == null) return 0;
|
---|
83 | int port = 0;
|
---|
84 | try {
|
---|
85 | port = Integer.parseInt(value);
|
---|
86 | } catch (NumberFormatException e) {
|
---|
87 | Main.error(tr("Unexpected format for port number in in preference ''{0}''. Got ''{1}''.", property, value));
|
---|
88 | Main.error(tr("The proxy will not be used."));
|
---|
89 | return 0;
|
---|
90 | }
|
---|
91 | if (port <= 0 || port > 65535) {
|
---|
92 | Main.error(tr("Illegal port number in preference ''{0}''. Got {1}.", property, port));
|
---|
93 | Main.error(tr("The proxy will not be used."));
|
---|
94 | return 0;
|
---|
95 | }
|
---|
96 | return port;
|
---|
97 | }
|
---|
98 |
|
---|
99 | /**
|
---|
100 | * Initializes the proxy selector from the setting in the preferences.
|
---|
101 | *
|
---|
102 | */
|
---|
103 | public void initFromPreferences() {
|
---|
104 | String value = Main.pref.get(ProxyPreferencesPanel.PROXY_POLICY);
|
---|
105 | if (value.length() == 0) {
|
---|
106 | proxyPolicy = ProxyPolicy.NO_PROXY;
|
---|
107 | } else {
|
---|
108 | proxyPolicy = ProxyPolicy.fromName(value);
|
---|
109 | if (proxyPolicy == null) {
|
---|
110 | Main.warn(tr("Unexpected value for preference ''{0}'' found. Got ''{1}''. Will use no proxy.", ProxyPreferencesPanel.PROXY_POLICY, value));
|
---|
111 | proxyPolicy = ProxyPolicy.NO_PROXY;
|
---|
112 | }
|
---|
113 | }
|
---|
114 | String host = Main.pref.get(ProxyPreferencesPanel.PROXY_HTTP_HOST, null);
|
---|
115 | int port = parseProxyPortValue(ProxyPreferencesPanel.PROXY_HTTP_PORT, Main.pref.get(ProxyPreferencesPanel.PROXY_HTTP_PORT, null));
|
---|
116 | httpProxySocketAddress = null;
|
---|
117 | if (proxyPolicy.equals(ProxyPolicy.USE_HTTP_PROXY)) {
|
---|
118 | if (host != null && !host.trim().isEmpty() && port > 0) {
|
---|
119 | httpProxySocketAddress = new InetSocketAddress(host, port);
|
---|
120 | } else {
|
---|
121 | Main.warn(tr("Unexpected parameters for HTTP proxy. Got host ''{0}'' and port ''{1}''.", host, port));
|
---|
122 | Main.warn(tr("The proxy will not be used."));
|
---|
123 | }
|
---|
124 | }
|
---|
125 |
|
---|
126 | host = Main.pref.get(ProxyPreferencesPanel.PROXY_SOCKS_HOST, null);
|
---|
127 | port = parseProxyPortValue(ProxyPreferencesPanel.PROXY_SOCKS_PORT, Main.pref.get(ProxyPreferencesPanel.PROXY_SOCKS_PORT, null));
|
---|
128 | socksProxySocketAddress = null;
|
---|
129 | if (proxyPolicy.equals(ProxyPolicy.USE_SOCKS_PROXY)) {
|
---|
130 | if (host != null && !host.trim().isEmpty() && port > 0) {
|
---|
131 | socksProxySocketAddress = new InetSocketAddress(host,port);
|
---|
132 | } else {
|
---|
133 | Main.warn(tr("Unexpected parameters for SOCKS proxy. Got host ''{0}'' and port ''{1}''.", host, port));
|
---|
134 | Main.warn(tr("The proxy will not be used."));
|
---|
135 | }
|
---|
136 | }
|
---|
137 | }
|
---|
138 |
|
---|
139 | @Override
|
---|
140 | public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
|
---|
141 | // Just log something. The network stack will also throw an exception which will be caught somewhere else
|
---|
142 | Main.error(tr("Connection to proxy ''{0}'' for URI ''{1}'' failed. Exception was: {2}", sa.toString(), uri.toString(), ioe.toString()));
|
---|
143 | // Remember errors to give a friendly user message asking to review proxy configuration
|
---|
144 | errorResources.add(uri.toString());
|
---|
145 | errorMessages.add(ioe.toString());
|
---|
146 | }
|
---|
147 |
|
---|
148 | /**
|
---|
149 | * Returns the set of current proxy resources that failed to be retrieved.
|
---|
150 | * @return the set of current proxy resources that failed to be retrieved
|
---|
151 | * @since 6523
|
---|
152 | */
|
---|
153 | public final Set<String> getErrorResources() {
|
---|
154 | return new TreeSet<String>(errorResources);
|
---|
155 | }
|
---|
156 |
|
---|
157 | /**
|
---|
158 | * Returns the set of current proxy error messages.
|
---|
159 | * @return the set of current proxy error messages
|
---|
160 | * @since 6523
|
---|
161 | */
|
---|
162 | public final Set<String> getErrorMessages() {
|
---|
163 | return new TreeSet<String>(errorMessages);
|
---|
164 | }
|
---|
165 |
|
---|
166 | /**
|
---|
167 | * Clear the sets of failed resources and error messages.
|
---|
168 | * @since 6523
|
---|
169 | */
|
---|
170 | public final void clearErrors() {
|
---|
171 | errorResources.clear();
|
---|
172 | errorMessages.clear();
|
---|
173 | }
|
---|
174 |
|
---|
175 | /**
|
---|
176 | * Determines if proxy errors have occured.
|
---|
177 | * @return {@code true} if errors have occured, {@code false} otherwise.
|
---|
178 | * @since 6523
|
---|
179 | */
|
---|
180 | public final boolean hasErrors() {
|
---|
181 | return !errorResources.isEmpty();
|
---|
182 | }
|
---|
183 |
|
---|
184 | @Override
|
---|
185 | public List<Proxy> select(URI uri) {
|
---|
186 | Proxy proxy;
|
---|
187 | switch(proxyPolicy) {
|
---|
188 | case USE_SYSTEM_SETTINGS:
|
---|
189 | if (!JVM_WILL_USE_SYSTEM_PROXIES) {
|
---|
190 | Main.warn(tr("The JVM is not configured to lookup proxies from the system settings. The property ''java.net.useSystemProxies'' was missing at startup time. Will not use a proxy."));
|
---|
191 | return Collections.singletonList(Proxy.NO_PROXY);
|
---|
192 | }
|
---|
193 | // delegate to the former proxy selector
|
---|
194 | List<Proxy> ret = delegate.select(uri);
|
---|
195 | return ret;
|
---|
196 | case NO_PROXY:
|
---|
197 | return Collections.singletonList(Proxy.NO_PROXY);
|
---|
198 | case USE_HTTP_PROXY:
|
---|
199 | if (httpProxySocketAddress == null)
|
---|
200 | return Collections.singletonList(Proxy.NO_PROXY);
|
---|
201 | proxy = new Proxy(Type.HTTP, httpProxySocketAddress);
|
---|
202 | return Collections.singletonList(proxy);
|
---|
203 | case USE_SOCKS_PROXY:
|
---|
204 | if (socksProxySocketAddress == null)
|
---|
205 | return Collections.singletonList(Proxy.NO_PROXY);
|
---|
206 | proxy = new Proxy(Type.SOCKS, socksProxySocketAddress);
|
---|
207 | return Collections.singletonList(proxy);
|
---|
208 | }
|
---|
209 | // should not happen
|
---|
210 | return null;
|
---|
211 | }
|
---|
212 | }
|
---|