001
014
015 package com.liferay.portal.webdav.methods;
016
017 import com.liferay.portal.NoSuchLockException;
018 import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
019 import com.liferay.portal.kernel.log.Log;
020 import com.liferay.portal.kernel.log.LogFactoryUtil;
021 import com.liferay.portal.kernel.servlet.ServletResponseUtil;
022 import com.liferay.portal.kernel.util.ContentTypes;
023 import com.liferay.portal.kernel.util.FileUtil;
024 import com.liferay.portal.kernel.util.GetterUtil;
025 import com.liferay.portal.kernel.util.StringBundler;
026 import com.liferay.portal.kernel.util.Time;
027 import com.liferay.portal.kernel.util.Validator;
028 import com.liferay.portal.kernel.webdav.Status;
029 import com.liferay.portal.kernel.webdav.WebDAVException;
030 import com.liferay.portal.kernel.webdav.WebDAVRequest;
031 import com.liferay.portal.kernel.webdav.WebDAVStorage;
032 import com.liferay.portal.kernel.webdav.WebDAVUtil;
033 import com.liferay.portal.model.Lock;
034 import com.liferay.util.xml.XMLFormatter;
035
036 import java.util.List;
037
038 import javax.servlet.http.HttpServletRequest;
039 import javax.servlet.http.HttpServletResponse;
040
041 import org.dom4j.Document;
042 import org.dom4j.Element;
043 import org.dom4j.io.SAXReader;
044
045
048 public class LockMethodImpl implements Method {
049
050 public int process(WebDAVRequest webDavRequest) throws WebDAVException {
051 try {
052 return doProcess(webDavRequest);
053 }
054 catch (Exception e) {
055 throw new WebDAVException(e);
056 }
057 }
058
059 protected int doProcess(WebDAVRequest webDavRequest) throws Exception {
060 WebDAVStorage storage = webDavRequest.getWebDAVStorage();
061
062 if (!storage.isSupportsClassTwo()) {
063 return HttpServletResponse.SC_METHOD_NOT_ALLOWED;
064 }
065
066 HttpServletRequest request = webDavRequest.getHttpServletRequest();
067 HttpServletResponse response = webDavRequest.getHttpServletResponse();
068
069 Lock lock = null;
070 Status status = null;
071
072 String lockUuid = webDavRequest.getLockUuid();
073 long timeout = WebDAVUtil.getTimeout(request);
074
075 if (Validator.isNull(lockUuid)) {
076
077
078
079 String owner = null;
080 String xml = new String(
081 FileUtil.getBytes(request.getInputStream()));
082
083 if (Validator.isNotNull(xml)) {
084 if (_log.isDebugEnabled()) {
085 _log.debug("Request XML\n" + XMLFormatter.toString(xml));
086 }
087
088 SAXReader reader = new SAXReader();
089
090 Document doc = reader.read(new UnsyncStringReader(xml));
091
092 Element root = doc.getRootElement();
093
094 boolean exclusive = false;
095
096 List<Element> lockscopeEls = root.element(
097 "lockscope").elements();
098
099 for (Element scopeEl : lockscopeEls) {
100 String name = GetterUtil.getString(scopeEl.getName());
101
102 if (name.equals("exclusive")) {
103 exclusive = true;
104 }
105 }
106
107 if (!exclusive) {
108 return HttpServletResponse.SC_BAD_REQUEST;
109 }
110
111 Element ownerEl = root.element("owner");
112
113 owner = ownerEl.getTextTrim();
114
115 if (Validator.isNull(owner)) {
116 List<Element> childEls = ownerEl.elements("href");
117
118 for (Element childEl : childEls) {
119 owner =
120 "<D:href>" + childEl.getTextTrim() + "</D:href>";
121 }
122 }
123 }
124 else {
125 _log.error("Empty request XML");
126
127 return HttpServletResponse.SC_PRECONDITION_FAILED;
128 }
129
130 status = storage.lockResource(webDavRequest, owner, timeout);
131
132 lock = (Lock)status.getObject();
133 }
134 else {
135 try {
136
137
138 lock = storage.refreshResourceLock(
139 webDavRequest, lockUuid, timeout);
140
141 status = new Status(HttpServletResponse.SC_OK);
142 }
143 catch (WebDAVException wde) {
144 if (wde.getCause() instanceof NoSuchLockException) {
145 return HttpServletResponse.SC_PRECONDITION_FAILED;
146 }
147 else {
148 throw wde;
149 }
150 }
151 }
152
153
154
155 if (lock == null) {
156 return status.getCode();
157 }
158
159 long depth = WebDAVUtil.getDepth(request);
160
161 String xml = getResponseXML(lock, depth);
162
163 if (_log.isDebugEnabled()) {
164 _log.debug("Response XML\n" + xml);
165 }
166
167 String lockToken = "<" + WebDAVUtil.TOKEN_PREFIX + lock.getUuid() + ">";
168
169 response.setContentType(ContentTypes.TEXT_XML_UTF8);
170 response.setHeader("Lock-Token", lockToken);
171 response.setStatus(status.getCode());
172
173 if (_log.isDebugEnabled()) {
174 _log.debug("Returning lock token " + lockToken);
175 }
176
177 try {
178 ServletResponseUtil.write(response, xml);
179 }
180 catch (Exception e) {
181 if (_log.isWarnEnabled()) {
182 _log.warn(e);
183 }
184 }
185
186 return status.getCode();
187 }
188
189 protected String getResponseXML(Lock lock, long depth) throws Exception {
190 StringBundler sb = new StringBundler(20);
191
192 long timeoutSecs = lock.getExpirationTime() / Time.SECOND;
193
194 sb.append("<?xml version=\"1.0\" encoding=\"utf-8\" ?>");
195 sb.append("<D:prop xmlns:D=\"DAV:\">");
196 sb.append("<D:lockdiscovery>");
197 sb.append("<D:activelock>");
198 sb.append("<D:locktype><D:write/></D:locktype>");
199 sb.append("<D:lockscope><D:exclusive/></D:lockscope>");
200
201 if (depth < 0) {
202 sb.append("<D:depth>Infinity</D:depth>");
203 }
204
205 sb.append("<D:owner>");
206 sb.append(lock.getOwner());
207 sb.append("</D:owner>");
208 sb.append("<D:timeout>Second-");
209 sb.append(timeoutSecs);
210 sb.append("</D:timeout>");
211 sb.append("<D:locktoken><D:href>");
212 sb.append(WebDAVUtil.TOKEN_PREFIX);
213 sb.append(lock.getUuid());
214 sb.append("</D:href></D:locktoken>");
215 sb.append("</D:activelock>");
216 sb.append("</D:lockdiscovery>");
217 sb.append("</D:prop>");
218
219 return XMLFormatter.toString(sb.toString());
220 }
221
222 private static Log _log = LogFactoryUtil.getLog(LockMethodImpl.class);
223
224 }