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Attic page.
1 package org.apache.archiva.web.rss;
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22 import com.rometools.rome.feed.synd.SyndFeed;
23 import com.rometools.rome.io.FeedException;
24 import com.rometools.rome.io.SyndFeedOutput;
25 import org.apache.archiva.metadata.repository.RepositorySessionFactory;
26 import org.apache.archiva.redback.authentication.AuthenticationException;
27 import org.apache.archiva.redback.authentication.AuthenticationResult;
28 import org.apache.archiva.redback.authorization.AuthorizationException;
29 import org.apache.archiva.redback.authorization.UnauthorizedException;
30 import org.apache.archiva.redback.integration.filter.authentication.HttpAuthenticator;
31 import org.apache.archiva.redback.policy.AccountLockedException;
32 import org.apache.archiva.redback.policy.MustChangePasswordException;
33 import org.apache.archiva.redback.system.SecuritySession;
34 import org.apache.archiva.redback.users.UserManager;
35 import org.apache.archiva.redback.users.UserNotFoundException;
36 import org.apache.archiva.rss.processor.RssFeedProcessor;
37 import org.apache.archiva.security.AccessDeniedException;
38 import org.apache.archiva.security.ArchivaSecurityException;
39 import org.apache.archiva.security.PrincipalNotFoundException;
40 import org.apache.archiva.security.ServletAuthenticator;
41 import org.apache.archiva.security.UserRepositories;
42 import org.apache.archiva.security.common.ArchivaRoleConstants;
43 import org.apache.commons.codec.Decoder;
44 import org.apache.commons.codec.DecoderException;
45 import org.apache.commons.codec.binary.Base64;
46 import org.apache.commons.lang3.StringUtils;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
49 import org.springframework.web.context.WebApplicationContext;
50 import org.springframework.web.context.support.WebApplicationContextUtils;
51
52 import javax.servlet.ServletConfig;
53 import javax.servlet.ServletException;
54 import javax.servlet.http.HttpServlet;
55 import javax.servlet.http.HttpServletRequest;
56 import javax.servlet.http.HttpServletResponse;
57 import java.io.IOException;
58 import java.util.ArrayList;
59 import java.util.Collections;
60 import java.util.HashMap;
61 import java.util.List;
62 import java.util.Map;
63
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65
66
67 public class RssFeedServlet
68 extends HttpServlet
69 {
70 public static final String MIME_TYPE = "application/rss+xml; charset=UTF-8";
71
72 private static final String COULD_NOT_GENERATE_FEED_ERROR = "Could not generate feed";
73
74 private static final String COULD_NOT_AUTHENTICATE_USER = "Could not authenticate user";
75
76 private static final String USER_NOT_AUTHORIZED = "User not authorized to access feed.";
77
78 private Logger log = LoggerFactory.getLogger( RssFeedServlet.class );
79
80 private WebApplicationContext wac;
81
82 private UserRepositories userRepositories;
83
84 private ServletAuthenticator servletAuth;
85
86 private HttpAuthenticator httpAuth;
87
88 private RssFeedProcessor newArtifactsprocessor;
89
90 private RssFeedProcessor newVersionsprocessor;
91
92
93
94
95 private RepositorySessionFactory repositorySessionFactory;
96
97 @Override
98 public void init( ServletConfig servletConfig )
99 throws ServletException
100 {
101 super.init( servletConfig );
102 wac = WebApplicationContextUtils.getRequiredWebApplicationContext( servletConfig.getServletContext() );
103 userRepositories = wac.getBean( UserRepositories.class );
104 servletAuth = wac.getBean( ServletAuthenticator.class );
105 httpAuth = wac.getBean( "httpAuthenticator#basic", HttpAuthenticator.class );
106
107 repositorySessionFactory = wac.getBean( "repositorySessionFactory", RepositorySessionFactory.class );
108
109 newArtifactsprocessor = wac.getBean( "rssFeedProcessor#new-artifacts", RssFeedProcessor.class );
110 newVersionsprocessor = wac.getBean( "rssFeedProcessor#new-versions", RssFeedProcessor.class );
111 }
112
113 @Override
114 public void doGet( HttpServletRequest req, HttpServletResponse res )
115 throws ServletException, IOException
116 {
117
118
119 String repoId = null;
120 String groupId = null;
121 String artifactId = null;
122
123 String url = StringUtils.removeEnd( req.getRequestURL().toString(), "/" );
124
125 if ( StringUtils.countMatches( StringUtils.substringAfter( url, "feeds/" ), "/" ) > 0 )
126 {
127 artifactId = StringUtils.substringAfterLast( url, "/" );
128 groupId = StringUtils.substringBeforeLast( StringUtils.substringAfter( url, "feeds/" ), "/" );
129 groupId = StringUtils.replaceChars( groupId, '/', '.' );
130 }
131 else if ( StringUtils.countMatches( StringUtils.substringAfter( url, "feeds/" ), "/" ) == 0 )
132 {
133
134 if ( StringUtils.countMatches( url, "feeds?" ) > 0 )
135 {
136 res.sendError( HttpServletResponse.SC_BAD_REQUEST, "Invalid request url." );
137 return;
138 }
139 repoId = StringUtils.substringAfterLast( url, "/" );
140 }
141 else
142 {
143 res.sendError( HttpServletResponse.SC_BAD_REQUEST, "Invalid request url." );
144 return;
145 }
146
147 RssFeedProcessor processor = null;
148
149 try
150 {
151 Map<String, String> map = new HashMap<>();
152 SyndFeed feed = null;
153
154 if ( isAllowed( req, repoId, groupId, artifactId ) )
155 {
156 if ( repoId != null )
157 {
158
159 processor = newArtifactsprocessor;
160 map.put( RssFeedProcessor.KEY_REPO_ID, repoId );
161 }
162 else if ( ( groupId != null ) && ( artifactId != null ) )
163 {
164
165
166 processor = newVersionsprocessor;
167 map.put( RssFeedProcessor.KEY_GROUP_ID, groupId );
168 map.put( RssFeedProcessor.KEY_ARTIFACT_ID, artifactId );
169 }
170 }
171 else
172 {
173 res.sendError( HttpServletResponse.SC_UNAUTHORIZED, USER_NOT_AUTHORIZED );
174 return;
175 }
176
177 feed = processor.process( map );
178
179 if ( feed == null )
180 {
181 res.sendError( HttpServletResponse.SC_NO_CONTENT, "No information available." );
182 return;
183 }
184
185 res.setContentType( MIME_TYPE );
186
187 if ( repoId != null )
188 {
189 feed.setLink( req.getRequestURL().toString() );
190 }
191 else if ( ( groupId != null ) && ( artifactId != null ) )
192 {
193 feed.setLink( req.getRequestURL().toString() );
194 }
195
196 SyndFeedOutput output = new SyndFeedOutput();
197 output.output( feed, res.getWriter() );
198 }
199 catch ( UserNotFoundException unfe )
200 {
201 log.debug( COULD_NOT_AUTHENTICATE_USER, unfe );
202 res.sendError( HttpServletResponse.SC_UNAUTHORIZED, COULD_NOT_AUTHENTICATE_USER );
203 }
204 catch ( AccountLockedException acce )
205 {
206 res.sendError( HttpServletResponse.SC_UNAUTHORIZED, COULD_NOT_AUTHENTICATE_USER );
207 }
208 catch ( AuthenticationException authe )
209 {
210 log.debug( COULD_NOT_AUTHENTICATE_USER, authe );
211 res.sendError( HttpServletResponse.SC_UNAUTHORIZED, COULD_NOT_AUTHENTICATE_USER );
212 }
213 catch ( FeedException ex )
214 {
215 log.debug( COULD_NOT_GENERATE_FEED_ERROR, ex );
216 res.sendError( HttpServletResponse.SC_INTERNAL_SERVER_ERROR, COULD_NOT_GENERATE_FEED_ERROR );
217 }
218 catch ( MustChangePasswordException e )
219 {
220 res.sendError( HttpServletResponse.SC_UNAUTHORIZED, COULD_NOT_AUTHENTICATE_USER );
221 }
222 catch ( UnauthorizedException e )
223 {
224 log.debug( e.getMessage() );
225 if ( repoId != null )
226 {
227 res.setHeader( "WWW-Authenticate",
228 "Basic realm=\"Repository Archiva Managed " + repoId + " Repository" );
229 }
230 else
231 {
232 res.setHeader( "WWW-Authenticate", "Basic realm=\"Artifact " + groupId + ":" + artifactId );
233 }
234
235 res.sendError( HttpServletResponse.SC_UNAUTHORIZED, USER_NOT_AUTHORIZED );
236 }
237 }
238
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245
246
247
248 private boolean isAllowed( HttpServletRequest req, String repositoryId, String groupId, String artifactId )
249 throws UserNotFoundException, AccountLockedException, AuthenticationException, MustChangePasswordException,
250 UnauthorizedException
251 {
252 String auth = req.getHeader( "Authorization" );
253 List<String> repoIds = new ArrayList<>();
254
255 if ( repositoryId != null )
256 {
257 repoIds.add( repositoryId );
258 }
259 else if ( artifactId != null && groupId != null )
260 {
261 if ( auth != null )
262 {
263 if ( !auth.toUpperCase().startsWith( "BASIC " ) )
264 {
265 return false;
266 }
267
268 Decoder dec = new Base64();
269 String usernamePassword = "";
270
271 try
272 {
273 usernamePassword = new String( (byte[]) dec.decode( auth.substring( 6 ).getBytes() ) );
274 }
275 catch ( DecoderException ie )
276 {
277 log.warn( "Error decoding username and password: {}", ie.getMessage() );
278 }
279
280 if ( usernamePassword == null || usernamePassword.trim().equals( "" ) )
281 {
282 repoIds = getObservableRepos( UserManager.GUEST_USERNAME );
283 }
284 else
285 {
286 String[] userCredentials = usernamePassword.split( ":" );
287 repoIds = getObservableRepos( userCredentials[0] );
288 }
289 }
290 else
291 {
292 repoIds = getObservableRepos( UserManager.GUEST_USERNAME );
293 }
294 }
295 else
296 {
297 return false;
298 }
299
300 for ( String repoId : repoIds )
301 {
302 try
303 {
304 AuthenticationResult result = httpAuth.getAuthenticationResult( req, null );
305 SecuritySession securitySession = httpAuth.getSecuritySession( req.getSession( true ) );
306
307 if ( servletAuth.isAuthenticated( req, result )
308 && servletAuth.isAuthorized( req,
309 securitySession,
310 repoId,
311 ArchivaRoleConstants.OPERATION_REPOSITORY_ACCESS ) )
312 {
313 return true;
314 }
315 }
316 catch ( AuthorizationException e )
317 {
318 log.debug( "AuthorizationException for repoId: {}", repoId );
319 }
320 catch ( UnauthorizedException e )
321 {
322 log.debug( "UnauthorizedException for repoId: {}", repoId );
323 }
324 }
325
326 throw new UnauthorizedException( "Access denied." );
327 }
328
329 private List<String> getObservableRepos( String principal )
330 {
331 try
332 {
333 return userRepositories.getObservableRepositoryIds( principal );
334 }
335 catch ( PrincipalNotFoundException e )
336 {
337 log.warn( e.getMessage(), e );
338 }
339 catch ( AccessDeniedException e )
340 {
341 log.warn( e.getMessage(), e );
342 }
343 catch ( ArchivaSecurityException e )
344 {
345 log.warn( e.getMessage(), e );
346 }
347
348 return Collections.emptyList();
349 }
350
351 }