org.argeo.app.servlet.odk/src/org/argeo/app/servlet/odk/OdkFormListServlet.java

   1 package org.argeo.app.servlet.odk;
   2
   3 import java.io.IOException;
   4 import java.io.Writer;
   5
   6 import javax.jcr.Node;
   7 import javax.jcr.NodeIterator;
   8 import javax.jcr.Property;
   9 import javax.jcr.Repository;
  10 import javax.jcr.RepositoryException;
  11 import javax.jcr.Session;
  12 import javax.jcr.query.Query;
  13 import javax.jcr.query.QueryResult;
  14 import javax.servlet.ServletException;
  15 import javax.servlet.http.HttpServlet;
  16 import javax.servlet.http.HttpServletRequest;
  17 import javax.servlet.http.HttpServletResponse;
  18
  19 import org.argeo.api.cms.CmsConstants;
  20 import org.argeo.api.cms.CmsLog;
  21 import org.argeo.app.api.EntityType;
  22 import org.argeo.app.odk.OrxListName;
  23 import org.argeo.app.odk.OrxManifestName;
  24 import org.argeo.cms.auth.RemoteAuthUtils;
  25 import org.argeo.cms.servlet.ServletHttpRequest;
  26 import org.argeo.cms.servlet.ServletUtils;
  27 import org.argeo.jcr.Jcr;
  28 import org.argeo.jcr.JcrxApi;
  29
  30 /** Lists available forms. */
  31 public class OdkFormListServlet extends HttpServlet {
  32         private static final long serialVersionUID = 2706191315048423321L;
  33         private final static CmsLog log = CmsLog.getLog(OdkFormListServlet.class);
  34
  35         private Repository repository;
  36
  37         @Override
  38         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  39                 resp.setContentType("text/xml; charset=utf-8");
  40                 resp.setHeader("X-OpenRosa-Version", "1.0");
  41                 resp.setDateHeader("Date", System.currentTimeMillis());
  42
  43                 // we force HTTPS since ODK Collect will fail anyhow when sending http
  44                 // cf. https://forum.getodk.org/t/authentication-for-non-https-schems/32967/4
  45                 StringBuilder baseServer = ServletUtils.getRequestUrlBase(req, true);
  46
  47                 String pathInfo = req.getPathInfo();
  48
  49                 Session session = RemoteAuthUtils.doAs(() -> Jcr.login(repository, CmsConstants.SYS_WORKSPACE),
  50                                 new ServletHttpRequest(req));
  51                 Writer writer = resp.getWriter();
  52                 writer.append("<?xml version='1.0' encoding='UTF-8' ?>");
  53                 writer.append("<xforms xmlns=\"http://openrosa.org/xforms/xformsList\">");
  54                 try {
  55
  56                         Query query;
  57                         if (pathInfo == null) {
  58                                 query = session.getWorkspace().getQueryManager()
  59                                                 .createQuery("SELECT * FROM [" + OrxListName.xform.get() + "]", Query.JCR_SQL2);
  60                         } else {
  61                                 query = session.getWorkspace().getQueryManager()
  62                                                 .createQuery(
  63                                                                 "SELECT node FROM [" + OrxListName.xform.get()
  64                                                                                 + "] AS node WHERE ISDESCENDANTNODE (node, '" + pathInfo + "')",
  65                                                                 Query.JCR_SQL2);
  66                         }
  67                         QueryResult queryResult = query.execute();
  68
  69                         NodeIterator nit = queryResult.getNodes();
  70                         while (nit.hasNext()) {
  71                                 StringBuilder sb = new StringBuilder();
  72                                 Node node = nit.nextNode();
  73                                 if (node.isNodeType(OrxListName.xform.get())) {
  74                                         sb.append("<xform>");
  75                                         sb.append("<formID>" + node.getProperty(OrxListName.formID.get()).getString() + "</formID>");
  76                                         sb.append("<name>" + Jcr.getTitle(node) + "</name>");
  77                                         sb.append("<version>" + node.getProperty(OrxListName.version.get()).getString() + "</version>");
  78                                         sb.append("<hash>md5:" + JcrxApi.getChecksum(node, JcrxApi.MD5) + "</hash>");
  79                                         if (node.hasProperty(Property.JCR_DESCRIPTION))
  80                                                 sb.append("<name>" + node.getProperty(Property.JCR_DESCRIPTION).getString() + "</name>");
  81                                         sb.append("<downloadUrl>" + baseServer + "/api/odk/form" + node.getPath() + "</downloadUrl>");
  82                                         if (node.hasNode(OrxManifestName.manifest.name())) {
  83                                                 sb.append("<manifestUrl>" + baseServer + "/api/odk/formManifest"
  84                                                                 + node.getNode(OrxManifestName.manifest.name()).getPath() + "</manifestUrl>");
  85                                         }
  86                                         sb.append("</xform>");
  87                                 } else if (node.isNodeType(EntityType.formSet.get())) {
  88                                         sb.append("<xforms-group>");
  89                                         sb.append("<groupId>" + node.getPath() + "</groupId>");
  90                                         sb.append("<name>" + node.getProperty(Property.JCR_TITLE).getString() + "</name>");
  91                                         sb.append("<listUrl>" + baseServer + "/api/odk/formList" + node.getPath() + "</listUrl>");
  92                                         sb.append("</xforms-group>");
  93                                 }
  94                                 String str = sb.toString();
  95                                 if (!str.equals("")) {
  96                                         if (log.isDebugEnabled())
  97                                                 log.debug(str);
  98                                         writer.append(str);
  99                                 }
 100                         }
 101                 } catch (RepositoryException e) {
 102                         e.printStackTrace();
 103                         // TODO error message
 104                         // resp.sendError(500);
 105                         resp.sendError(503);
 106                 } finally {
 107                         Jcr.logout(session);
 108                 }
 109                 writer.append("</xforms>");
 110         }
 111
 112         public void setRepository(Repository repository) {
 113                 this.repository = repository;
 114         }
 115
 116 }