001
014
015 package com.liferay.portal.servlet;
016
017 import com.liferay.portal.exception.NoSuchLayoutException;
018 import com.liferay.portal.kernel.language.LanguageUtil;
019 import com.liferay.portal.kernel.log.Log;
020 import com.liferay.portal.kernel.log.LogFactoryUtil;
021 import com.liferay.portal.kernel.util.CharPool;
022 import com.liferay.portal.kernel.util.GetterUtil;
023 import com.liferay.portal.kernel.util.HashUtil;
024 import com.liferay.portal.kernel.util.LocaleUtil;
025 import com.liferay.portal.kernel.util.StringPool;
026 import com.liferay.portal.kernel.util.Validator;
027 import com.liferay.portal.kernel.util.WebKeys;
028 import com.liferay.portal.kernel.xml.Element;
029 import com.liferay.portal.util.PortalUtil;
030 import com.liferay.portal.util.PropsValues;
031
032 import java.io.IOException;
033
034 import java.util.Collections;
035 import java.util.HashSet;
036 import java.util.List;
037 import java.util.Locale;
038 import java.util.Set;
039
040 import javax.servlet.RequestDispatcher;
041 import javax.servlet.ServletContext;
042 import javax.servlet.ServletException;
043 import javax.servlet.http.HttpServlet;
044 import javax.servlet.http.HttpServletRequest;
045 import javax.servlet.http.HttpServletResponse;
046 import javax.servlet.http.HttpSession;
047
048 import org.apache.struts.Globals;
049
050
053 public class I18nServlet extends HttpServlet {
054
055 public static Set<String> getLanguageIds() {
056 return _languageIds;
057 }
058
059 public static void setLanguageIds(Element root) {
060 _languageIds = new HashSet<>();
061
062 List<Element> rootElements = root.elements("servlet-mapping");
063
064 for (Element element : rootElements) {
065 String servletName = element.elementText("servlet-name");
066
067 if (servletName.equals("I18n Servlet")) {
068 String urlPattern = element.elementText("url-pattern");
069
070 String languageId = urlPattern.substring(
071 0, urlPattern.lastIndexOf(CharPool.SLASH));
072
073 _languageIds.add(languageId);
074 }
075 }
076
077 _languageIds = Collections.unmodifiableSet(_languageIds);
078 }
079
080 @Override
081 public void service(
082 HttpServletRequest request, HttpServletResponse response)
083 throws IOException, ServletException {
084
085 try {
086 I18nData i18nData = getI18nData(request);
087
088 if ((i18nData == null) ||
089 !PortalUtil.isValidResourceId(i18nData.getPath())) {
090
091 PortalUtil.sendError(
092 HttpServletResponse.SC_NOT_FOUND,
093 new NoSuchLayoutException(), request, response);
094 }
095 else {
096 request.setAttribute(
097 WebKeys.I18N_LANGUAGE_CODE, i18nData.getLanguageCode());
098 request.setAttribute(
099 WebKeys.I18N_LANGUAGE_ID, i18nData.getLanguageId());
100 request.setAttribute(WebKeys.I18N_PATH, i18nData.getI18nPath());
101
102 Locale locale = LocaleUtil.fromLanguageId(
103 i18nData.getLanguageId());
104
105 HttpSession session = request.getSession();
106
107 session.setAttribute(Globals.LOCALE_KEY, locale);
108
109 LanguageUtil.updateCookie(request, response, locale);
110
111 ServletContext servletContext = getServletContext();
112
113 RequestDispatcher requestDispatcher =
114 servletContext.getRequestDispatcher(i18nData.getPath());
115
116 requestDispatcher.forward(request, response);
117 }
118 }
119 catch (Exception e) {
120 _log.error(e, e);
121
122 PortalUtil.sendError(
123 HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
124 response);
125 }
126 }
127
128 protected I18nData getI18nData(HttpServletRequest request) {
129 String path = GetterUtil.getString(request.getPathInfo());
130
131 if (Validator.isNull(path)) {
132 return null;
133 }
134
135 String i18nLanguageId = request.getServletPath();
136
137 int pos = i18nLanguageId.lastIndexOf(CharPool.SLASH);
138
139 i18nLanguageId = i18nLanguageId.substring(pos + 1);
140
141 if (_log.isDebugEnabled()) {
142 _log.debug("Language ID " + i18nLanguageId);
143 }
144
145 if (Validator.isNull(i18nLanguageId)) {
146 return null;
147 }
148
149 String i18nPath = StringPool.SLASH + i18nLanguageId;
150
151 Locale locale = LocaleUtil.fromLanguageId(i18nLanguageId);
152
153 String i18nLanguageCode = locale.getLanguage();
154
155 if (Validator.isNull(locale.getCountry())) {
156
157
158
159 locale = LanguageUtil.getLocale(i18nLanguageCode);
160
161 if (locale == null) {
162 i18nLanguageId = null;
163 i18nLanguageCode = null;
164 }
165 else {
166 i18nLanguageId = LocaleUtil.toLanguageId(locale);
167 }
168 }
169
170 if (!PropsValues.LOCALE_USE_DEFAULT_IF_NOT_AVAILABLE &&
171 !LanguageUtil.isAvailableLocale(i18nLanguageId)) {
172
173 return null;
174 }
175
176 String redirect = path;
177
178 if (_log.isDebugEnabled()) {
179 _log.debug("Redirect " + redirect);
180 }
181
182 return new I18nData(
183 i18nPath, i18nLanguageCode, i18nLanguageId, redirect);
184 }
185
186 protected I18nData getI18nData(Locale locale) {
187 String languageId = LocaleUtil.toLanguageId(locale);
188
189 return new I18nData(
190 StringPool.SLASH + languageId, locale.getLanguage(), languageId,
191 StringPool.SLASH);
192 }
193
194 protected class I18nData {
195
196 public I18nData(
197 String i18nPath, String languageCode, String languageId,
198 String path) {
199
200 _i18nPath = i18nPath;
201 _languageCode = languageCode;
202 _languageId = languageId;
203 _path = path;
204 }
205
206 @Override
207 public boolean equals(Object obj) {
208 if (this == obj) {
209 return true;
210 }
211
212 if (!(obj instanceof I18nData)) {
213 return false;
214 }
215
216 I18nData i18nData = (I18nData)obj;
217
218 if (Validator.equals(getI18nPath(), i18nData.getI18nPath()) &&
219 Validator.equals(
220 getLanguageCode(), i18nData.getLanguageCode()) &&
221 Validator.equals(getLanguageId(), i18nData.getLanguageId()) &&
222 Validator.equals(getPath(), i18nData.getPath())) {
223
224 return true;
225 }
226
227 return false;
228 }
229
230 public String getI18nPath() {
231 return _i18nPath;
232 }
233
234 public String getLanguageCode() {
235 return _languageCode;
236 }
237
238 public String getLanguageId() {
239 return _languageId;
240 }
241
242 public String getPath() {
243 return _path;
244 }
245
246 @Override
247 public int hashCode() {
248 int hash = HashUtil.hash(0, getI18nPath());
249
250 hash = HashUtil.hash(hash, getLanguageCode());
251 hash = HashUtil.hash(hash, getLanguageId());
252
253 return HashUtil.hash(hash, getPath());
254 }
255
256 private final String _i18nPath;
257 private final String _languageCode;
258 private final String _languageId;
259 private final String _path;
260
261 }
262
263 private static final Log _log = LogFactoryUtil.getLog(I18nServlet.class);
264
265 private static Set<String> _languageIds;
266
267 }