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ldap-export-servlet/src/main/java/org/gcube/portal/ldapexport/LDAPSync.java

361 lines
12 KiB
Java

package org.gcube.portal.ldapexport;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Random;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import org.gcube.common.portal.PortalContext;
import org.gcube.portal.custom.communitymanager.OrganizationsUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.liferay.portal.kernel.cache.CacheRegistryUtil;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.model.Organization;
import com.liferay.portal.model.User;
import com.liferay.portal.service.OrganizationLocalServiceUtil;
import com.liferay.portal.service.UserLocalServiceUtil;
public class LDAPSync implements Runnable {
private static final Logger _log = LoggerFactory.getLogger(LDAPSync.class);
private static final String LDAP_ORG_FILTER = "(objectClass=organizationalUnit)";
private static final String LDAP_GROUP_FILTER = "(objectClass=posixGroup)";
private String ldapUrl;
private String filter;
private String principal;
private String pwd;
public LDAPSync(String ldapUrl, String filter, String principal, String pwd) {
this.ldapUrl = ldapUrl;
this.filter = filter;
this.principal = principal;
this.pwd = pwd;
_log.info("Starting LDAPSync over " + ldapUrl);
}
/**
*
* @return the Liferay mapped as Root Organization
*/
private Organization getRootVO() {
String rootVoName = PortalContext.getConfiguration().getInfrastructureName();
_log.debug("Root organization name found: " + rootVoName);
//start of iteration of the actual groups
List<Organization> organizations;
try {
organizations = OrganizationLocalServiceUtil.getOrganizations(0, OrganizationLocalServiceUtil.getOrganizationsCount());
for (Organization organization : organizations) {
if (organization.getName().equals(rootVoName)) {
return organization;
}
}
}
catch (SystemException e) {
_log.error("There were problems retrieving root organization", e);
}
_log.error("Could not find any root organization");
return null;
}
@Override
public void run() {
_log.debug("Reading Portal Users ...");
List<User> users = null;
try {
users = getAllLiferayUsers();
_log.debug("\n***Read " + users.size() + " from LR DB\n");
} catch (Exception e1) {
e1.printStackTrace();
}
_log.debug("Reading Portal Organizations ...");
Organization rootVO = getRootVO();
_log.debug("Initializing LDAP exporter ...");
Properties env = new Properties();
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, ldapUrl);
env.put(Context.SECURITY_PRINCIPAL, principal);
env.put(Context.SECURITY_CREDENTIALS, pwd);
try {
DirContext ctx = new InitialDirContext(env);
_log.debug("Initiating LDAP Sync ...");
//update the whole list of users (uid="+username+",ou=People,o=Liferay,ou=Organizations,dc=d4science,dc=org")
exportSingleUsers(ctx, env, users);
//crate or update the whole list of organizations (objectClass=organizationalUnit, ou="+orgName+",dc=d4science,dc=org) and groups ( objectClass=top and POSIXGroup)
updateGroups(ctx, rootVO);
} catch (NamingException e) {
_log.error("Something went Wrong during LDAP Sync in Exporting to LDAP");
e.printStackTrace();
} catch (SystemException es) {
_log.error("Something went Wrong during LDAP Sync in retrieving Liferay Organization");
es.printStackTrace();
}
}
private void updateGroups(DirContext ctx, Organization root) throws NamingException, SystemException {
String subCtx = getOrgSubContext(root.getName());
if (!checkIfLDAPOrganizationalUnitExists(ctx, subCtx))
createOrganizationalUnit(ctx, subCtx);
for (Organization org : root.getSuborganizations()) {
String orgSubCtx = "ou="+org.getName()+","+subCtx;
if (!checkIfLDAPOrganizationalUnitExists(ctx, orgSubCtx))
createOrganizationalUnit(ctx, orgSubCtx);
for (Organization vre : org.getSuborganizations()) {
String vreSubCtx = "cn="+vre.getName()+","+orgSubCtx;
if (!checkIfLDAPGroupExists(ctx, vreSubCtx))
createGroupVRE(ctx, vreSubCtx, vre.getName());
//update the list of users in such VRE
updateUsersInGroup(ctx, vreSubCtx, vre);
}
}
}
private void updateUsersInGroup(DirContext ctx, String vreSubCtx, Organization vre) throws NamingException, SystemException {
List<User> users = UserLocalServiceUtil.getOrganizationUsers(vre.getOrganizationId());
for (User userObj : users) {
String user = userObj.getScreenName();
try {
Attribute memberUid = new BasicAttribute("memberUid");
memberUid.add(user);
Attributes attributes = new BasicAttributes();
attributes.put(memberUid);
ctx.modifyAttributes(vreSubCtx, DirContext.ADD_ATTRIBUTE, attributes);
_log.info("Adding user: " + user);
}
catch (javax.naming.directory.AttributeInUseException ex) {
_log.trace("Not adding already existing user: " + user);
}
}
}
private void exportSingleUsers(DirContext ctx, Properties env, List<User> users) throws NamingException {
for (User user : users) {
updateUserInLDAP(user.getScreenName(), user.getFirstName(), user.getLastName(), user.getFullName(), user.getEmailAddress(), "{SHA}"+user.getPassword(), ctx, filter);
//_log.debug("Updated " + user.getScreenName());
}
_log.debug("LDAP Users Sync cycle done");
if (! users.isEmpty())
_log.info("LDAP Users Sync Completed OK!");
else
_log.warn("LDAP Users Sync cycle skipped this time");
}
/**
*
* @param ctx
* @param subContext
* @throws NamingException
*/
private void createOrganizationalUnit(DirContext ctx, String subContext) throws NamingException {
Attributes attributes = new BasicAttributes();
Attribute objectClass = new BasicAttribute("objectClass");
objectClass.add("organizationalUnit");
attributes.put(objectClass);
Attribute description = new BasicAttribute("description");
description.add("Liferay Organization");
attributes.put(description);
ctx.createSubcontext(subContext, attributes);
_log.info("Added " + subContext);
}
/**
*
* @param ctx
* @param subContext
* @param vreName
* @throws NamingException
*/
private void createGroupVRE(DirContext ctx, String subContext, String vreName) throws NamingException {
Attributes attributes = new BasicAttributes();
Attribute objectClass = new BasicAttribute("objectClass");
objectClass.add("top");
objectClass.add("posixGroup");
// objectClass.add("researchProject");
// objectClass.add("groupOfMembers");
attributes.put(objectClass);
Attribute cn = new BasicAttribute("cn");
cn.add(vreName);
attributes.put(cn);
Attribute gidNumber = new BasicAttribute("gidNumber");
gidNumber.add(getRandomPOSIXidentifier(ctx));
attributes.put(gidNumber);
ctx.createSubcontext(subContext, attributes);
_log.info("Added " + subContext);
}
private String getOrgSubContext(String orgName) {
return "ou="+orgName+",dc=d4science,dc=org";
}
/**
*
* @param ctx
* @param orgSubctx
* @return true if exists
*/
private boolean checkIfLDAPOrganizationalUnitExists(DirContext ctx, String orgSubctx) {
SearchControls ctls = new SearchControls();
ctls.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration<SearchResult> answer;
try {
answer = ctx.search(orgSubctx, LDAP_ORG_FILTER, ctls);
} catch (NamingException e) {
_log.debug("not found in LDAP (will add it): Organization: " + orgSubctx);
return false;
}
boolean toReturn = answer.hasMoreElements();
_log.debug("Organization: " + orgSubctx + " exists? " + toReturn);
return toReturn;
}
/**
*
* @param ctx
* @param groupSubctx
* @return true if exists
*/
private boolean checkIfLDAPGroupExists(DirContext ctx, String groupSubctx) {
SearchControls ctls = new SearchControls();
ctls.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration<SearchResult> answer;
try {
answer = ctx.search(groupSubctx, LDAP_GROUP_FILTER, ctls);
} catch (NamingException e) {
_log.debug("not found in LDAP (will add it): Group: " + groupSubctx);
return false;
}
boolean toReturn = answer.hasMoreElements();
_log.debug("Group: " + groupSubctx + " exists? " + toReturn);
return toReturn;
}
/**
*
* @param username
* @return the single user subContext
*/
private String getSubContext(String username) {
return "uid="+username+",ou=People,o=Liferay,ou=Organizations,dc=d4science,dc=org";
}
/**
*
* @param username
* @param ctx
* @param filter
* @return true if exists
*/
private boolean checkIfLDAPUserExists(String username, DirContext ctx, String filter) {
SearchControls ctls = new SearchControls();
ctls.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration<SearchResult> answer;
try {
answer = ctx.search(getSubContext(username), filter, ctls);
} catch (NamingException e) {
_log.info("user: " + username + " not found in LDAP, trying to export it");
return false;
}
return answer.hasMoreElements();
}
/**
*
* @param username
* @param name
* @param lastName
* @param email
* @param passwd
* @param ctx
* @throws NamingException
*/
private void updateUserInLDAP(String username, String name, String lastName, String fullName, String email, String passwd, DirContext ctx, String filter) throws NamingException {
Attributes attributes=new BasicAttributes();
Attribute objectClass=new BasicAttribute("objectClass");
objectClass.add("inetOrgPerson");
attributes.put(objectClass);
//the main ldap server uses 'givenName' for the First name, 'cn' for "first name last name', 'sn' for the last name
Attribute givenName = new BasicAttribute("givenName");
Attribute cn = new BasicAttribute("cn");
Attribute sn = new BasicAttribute("sn");
Attribute mail = new BasicAttribute("mail");
Attribute userPassword = new BasicAttribute("userPassword");
givenName.add(name);
cn.add(fullName);
sn.add(lastName);
mail.add(email);
userPassword.add(passwd);
attributes.put(givenName);
attributes.put(cn);
attributes.put(sn);
attributes.put(mail);
attributes.put(userPassword);
if (checkIfLDAPUserExists(username, ctx, filter)) {
//_log.debug("User " + username + " already exists, replacing attributes");
ctx.modifyAttributes(getSubContext(username), DirContext.REPLACE_ATTRIBUTE, attributes);
}
else {
ctx.createSubcontext(getSubContext(username),attributes);
_log.debug("New User Found with uid=" + username + " created");
}
}
/**
*
* @return the whole list of users
*/
private List<User> getAllLiferayUsers() {
String infraName = PortalContext.getConfiguration().getInfrastructureName();
_log.info("TRY Reading non chached users belonging to: /" + infraName);
List<User> toReturn = new ArrayList<User>();
Organization rootInfra;
try {
CacheRegistryUtil.clear(); //needed to avoid cache use by liferay API
rootInfra = OrganizationLocalServiceUtil.getOrganization(OrganizationsUtil.getCompany().getCompanyId(), infraName);
toReturn = UserLocalServiceUtil.getOrganizationUsers(rootInfra.getOrganizationId());
} catch (PortalException | SystemException e) {
_log.error("Error during LDAP Sync, could not retrieve users from LR DB: " + e.getMessage());
}
return toReturn;
}
/**
*
* @return an integer between 1000 and 2147483647
*/
private String getRandomPOSIXidentifier(DirContext ctx) {
final int Low = 1000;
final int High = 2147483647;
Random r = new Random();
int toReturn = r.nextInt(High-Low) + Low;
return toReturn+"";
}
}