1
22
23 package com.liferay.portal.security.auth;
24
25 import com.liferay.portal.NoSuchUserException;
26 import com.liferay.portal.PortalException;
27 import com.liferay.portal.SystemException;
28 import com.liferay.portal.kernel.util.StringPool;
29 import com.liferay.portal.kernel.util.StringUtil;
30 import com.liferay.portal.model.User;
31 import com.liferay.portal.security.ldap.PortalLDAPUtil;
32 import com.liferay.portal.service.UserLocalServiceUtil;
33 import com.liferay.portal.util.PortalUtil;
34 import com.liferay.portal.util.PrefsPropsUtil;
35 import com.liferay.portal.util.PropsUtil;
36 import com.liferay.util.PwdGenerator;
37 import com.liferay.util.ldap.LDAPUtil;
38
39 import edu.yale.its.tp.cas.client.filter.CASFilter;
40
41 import java.util.Properties;
42
43 import javax.naming.Binding;
44 import javax.naming.Context;
45 import javax.naming.NamingEnumeration;
46 import javax.naming.directory.Attribute;
47 import javax.naming.directory.Attributes;
48 import javax.naming.directory.SearchControls;
49 import javax.naming.ldap.InitialLdapContext;
50 import javax.naming.ldap.LdapContext;
51
52 import javax.servlet.http.HttpServletRequest;
53 import javax.servlet.http.HttpServletResponse;
54 import javax.servlet.http.HttpSession;
55
56 import org.apache.commons.logging.Log;
57 import org.apache.commons.logging.LogFactory;
58
59
66 public class CASAutoLogin implements AutoLogin {
67
68 public String[] login(HttpServletRequest req, HttpServletResponse res)
69 throws AutoLoginException {
70
71 try {
72 String[] credentials = null;
73
74 long companyId = PortalUtil.getCompanyId(req);
75
76 if (!PrefsPropsUtil.getBoolean(
77 companyId, PropsUtil.CAS_AUTH_ENABLED)) {
78
79 return credentials;
80 }
81
82 HttpSession ses = req.getSession();
83
84 String screenName =
85 (String)ses.getAttribute(CASFilter.CAS_FILTER_USER);
86
87 if (screenName != null) {
88 User user = null;
89
90 try {
91 user = UserLocalServiceUtil.getUserByScreenName(
92 companyId, screenName);
93 }
94 catch (NoSuchUserException nsue) {
95 if (PrefsPropsUtil.getBoolean(
96 companyId, PropsUtil.CAS_IMPORT_FROM_LDAP)) {
97
98 user = addUser(companyId, screenName);
99 }
100 else {
101 throw nsue;
102 }
103 }
104
105 credentials = new String[3];
106
107 credentials[0] = String.valueOf(user.getUserId());
108 credentials[1] = user.getPassword();
109 credentials[2] = Boolean.TRUE.toString();
110 }
111
112 return credentials;
113 }
114 catch (Exception e) {
115 throw new AutoLoginException(e);
116 }
117 }
118
119 protected User addUser(long companyId, String screenName)
120 throws PortalException, SystemException {
121
122 try {
123 Properties env = new Properties();
124
125 String baseProviderURL = PrefsPropsUtil.getString(
126 companyId, PropsUtil.LDAP_BASE_PROVIDER_URL);
127
128 String baseDN = PrefsPropsUtil.getString(
129 companyId, PropsUtil.LDAP_BASE_DN);
130
131 env.put(
132 Context.INITIAL_CONTEXT_FACTORY,
133 PrefsPropsUtil.getString(
134 companyId, PropsUtil.LDAP_FACTORY_INITIAL));
135 env.put(
136 Context.PROVIDER_URL,
137 LDAPUtil.getFullProviderURL(baseProviderURL, baseDN));
138 env.put(
139 Context.SECURITY_PRINCIPAL,
140 PrefsPropsUtil.getString(
141 companyId, PropsUtil.LDAP_SECURITY_PRINCIPAL));
142 env.put(
143 Context.SECURITY_CREDENTIALS,
144 PrefsPropsUtil.getString(
145 companyId, PropsUtil.LDAP_SECURITY_CREDENTIALS));
146
147 LdapContext ctx = null;
148
149 try {
150 ctx = new InitialLdapContext(env, null);
151 }
152 catch (Exception e) {
153 if (_log.isDebugEnabled()) {
154 _log.debug("Failed to bind to the LDAP server", e);
155 }
156
157 throw new SystemException(e);
158 }
159
160 String filter = PrefsPropsUtil.getString(
161 companyId, PropsUtil.LDAP_AUTH_SEARCH_FILTER);
162
163 if (_log.isDebugEnabled()) {
164 _log.debug("Search filter before transformation " + filter);
165 }
166
167 filter = StringUtil.replace(
168 filter,
169 new String[] {
170 "@company_id@", "@email_address@", "@screen_name@"
171 },
172 new String[] {
173 String.valueOf(companyId), StringPool.BLANK, screenName
174 });
175
176 if (_log.isDebugEnabled()) {
177 _log.debug("Search filter after transformation " + filter);
178 }
179
180 SearchControls cons = new SearchControls(
181 SearchControls.SUBTREE_SCOPE, 1, 0, null, false, false);
182
183 NamingEnumeration enu = ctx.search(StringPool.BLANK, filter, cons);
184
185 if (enu.hasMore()) {
186 if (_log.isDebugEnabled()) {
187 _log.debug("Search filter returned at least one result");
188 }
189
190 Binding binding = (Binding)enu.next();
191
192 Attributes attrs = ctx.getAttributes(binding.getName());
193
194 Attribute emailAddressAttr = attrs.get("mail");
195
196 String emailAddress = StringPool.BLANK;
197
198 if (emailAddressAttr != null) {
199 emailAddress = emailAddressAttr.get().toString();
200 }
201
202 return PortalLDAPUtil.importLDAPUser(
203 companyId, ctx, attrs, emailAddress, screenName,
204 PwdGenerator.getPassword(), true);
205 }
206 else {
207 throw new NoSuchUserException(
208 "User " + screenName + " was not found in the LDAP server");
209 }
210 }
211 catch (Exception e) {
212 _log.error("Problem accessing LDAP server ", e);
213
214 throw new SystemException(
215 "Problem accessign LDAP server " + e.getMessage());
216 }
217 }
218
219 private static Log _log = LogFactory.getLog(CASAutoLogin.class);
220
221 }