package org.apache.maven.wagon.shared.http;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import org.apache.http.Header;

 import org.apache.http.HttpEntity;

 import org.apache.http.HttpException;

 import org.apache.http.HttpHost;

 import org.apache.http.HttpResponse;

 import org.apache.http.HttpStatus;

 import org.apache.http.auth.AuthScope;

 import org.apache.http.auth.Credentials;

 import org.apache.http.auth.NTCredentials;

 import org.apache.http.auth.UsernamePasswordCredentials;

 import org.apache.http.client.AuthCache;

 import org.apache.http.client.methods.HttpGet;

 import org.apache.http.client.methods.HttpHead;

 import org.apache.http.client.methods.HttpPut;

 import org.apache.http.client.methods.HttpUriRequest;

 import org.apache.http.client.params.ClientPNames;

 import org.apache.http.client.params.CookiePolicy;

 import org.apache.http.client.protocol.ClientContext;

 import org.apache.http.conn.ClientConnectionManager;

 import org.apache.http.conn.params.ConnRoutePNames;

 import org.apache.http.conn.scheme.Scheme;

 import org.apache.http.conn.ssl.BrowserCompatHostnameVerifier;

 import org.apache.http.conn.ssl.SSLSocketFactory;

 import org.apache.http.conn.ssl.X509HostnameVerifier;

 import org.apache.http.impl.auth.BasicScheme;

 import org.apache.http.impl.client.BasicAuthCache;

 import org.apache.http.impl.client.DefaultHttpClient;

 import org.apache.http.impl.conn.SingleClientConnManager;

 import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;

 import org.apache.http.impl.cookie.DateParseException;

 import org.apache.http.impl.cookie.DateUtils;

 import org.apache.http.message.BasicHeader;

 import org.apache.http.params.CoreConnectionPNames;

 import org.apache.http.params.CoreProtocolPNames;

 import org.apache.http.params.HttpParams;

 import org.apache.http.protocol.BasicHttpContext;

 import org.apache.maven.wagon.InputData;

 import org.apache.maven.wagon.OutputData;

 import org.apache.maven.wagon.PathUtils;

 import org.apache.maven.wagon.ResourceDoesNotExistException;

 import org.apache.maven.wagon.StreamWagon;

 import org.apache.maven.wagon.TransferFailedException;

 import org.apache.maven.wagon.Wagon;

 import org.apache.maven.wagon.authorization.AuthorizationException;

 import org.apache.maven.wagon.events.TransferEvent;

 import org.apache.maven.wagon.proxy.ProxyInfo;

 import org.apache.maven.wagon.repository.Repository;

 import org.apache.maven.wagon.resource.Resource;

 import org.codehaus.plexus.util.IOUtil;

 import org.codehaus.plexus.util.StringUtils;

 import javax.net.ssl.SSLException;

 import javax.net.ssl.SSLSession;

 import javax.net.ssl.SSLSocket;

 import java.io.File;

 import java.io.FileInputStream;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.OutputStream;

 import java.net.URLEncoder;

 import java.security.cert.X509Certificate;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 import java.util.Locale;

 import java.util.Map;

 import java.util.Properties;

 import java.util.TimeZone;

 import java.util.zip.GZIPInputStream;

 /**

  * @author <a href="michal.maczka@dimatics.com">Michal Maczka</a>

  * @author <a href="mailto:james@atlassian.com">James William Dumay</a>

  */

 public abstract class AbstractHttpClientWagon

     extends StreamWagon

 {

     private BasicHttpContext localContext;

     private final class RequestEntityImplementation

         implements HttpEntity

     {

         private final Resource resource;

         private final Wagon wagon;

         private final File source;

         private RequestEntityImplementation( final InputStream stream, final Resource resource, final Wagon wagon,

                                              final File source )

             throws TransferFailedException

         {

             if ( source != null )

             {

                 this.source = source;

             }

             else

             {

                 FileOutputStream fos = null;

                 try

                 {

                     this.source = File.createTempFile( "http-wagon.", ".tmp" );

                     this.source.deleteOnExit();

                     fos = new FileOutputStream( this.source );

                     IOUtil.copy( stream, fos );

                 }

                 catch ( IOException e )

                 {

                     fireTransferError( resource, e, TransferEvent.REQUEST_PUT );

                     throw new TransferFailedException( "Failed to buffer stream contents to temp file for upload.", e );

                 }

                 finally

                 {

                     IOUtil.close( fos );

                 }

             }

             this.resource = resource;

             this.wagon = wagon;

         }

         public long getContentLength()

         {

             return resource.getContentLength();

         }

         public Header getContentType()

         {

             return null;

         }

         public Header getContentEncoding()

         {

             return null;

         }

         public InputStream getContent()

             throws IOException, IllegalStateException

         {

             FileInputStream fis = new FileInputStream( source );

             return fis;

         }

         public boolean isRepeatable()

         {

             return true;

         }

         public boolean isChunked()

         {

             return false;

         }

         public void writeTo( OutputStream output )

             throws IOException

         {

             byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];

             TransferEvent transferEvent =

                 new TransferEvent( wagon, resource, TransferEvent.TRANSFER_PROGRESS, TransferEvent.REQUEST_PUT );

             transferEvent.setTimestamp( System.currentTimeMillis() );

             FileInputStream fin = null;

             try

             {

                 fin = new FileInputStream( source );

                 int remaining = Integer.MAX_VALUE;

                 while ( remaining > 0 )

                 {

                     int n = fin.read( buffer, 0, Math.min( buffer.length, remaining ) );

                     if ( n == -1 )

                     {

                         break;

                     }

                     fireTransferProgress( transferEvent, buffer, n );

                     output.write( buffer, 0, n );

                     remaining -= n;

                 }

             }

             finally

             {

                 IOUtil.close( fin );

             }

             output.flush();

         }

         public boolean isStreaming()

         {

             return false;

         }

         public void consumeContent()

             throws IOException

         {

         }

     }

     protected static final int SC_NULL = -1;

     protected static final TimeZone GMT_TIME_ZONE = TimeZone.getTimeZone( "GMT" );

     private DefaultHttpClient client;

     /**

      * @since 2.0

      */

     protected static ClientConnectionManager connectionManagerPooled;

     /**

      * @since 2.0

      */

     protected ClientConnectionManager clientConnectionManager = new SingleClientConnManager();

     /**

      * use http(s) connection pool mechanism.

      * <b>enabled by default</b>

      *

      * @since 2.0

      */

     protected static boolean useClientManagerPooled =

         Boolean.valueOf( System.getProperty( "maven.wagon.http.pool", "true" ) );

     /**

      * skip failure on certificate validity checks.

      * <b>enabled by default</b>

      *

      * @since 2.0

      */

     protected static boolean sslEasy = Boolean.valueOf( System.getProperty( "maven.wagon.http.ssl.easy", "true" ) );

     /**

      * ssl hostname verifier is allow all by default. Disable this will use a browser compat hostname verifier

      * <b>enabled by default</b>

      *

      * @since 2.0

      */

     protected static boolean sslAllowAll =

         Boolean.valueOf( System.getProperty( "maven.wagon.http.ssl.allowall", "true" ) );

     /**

      * if using sslEasy certificate date issues will be ignored

      * <b>enabled by default</b>

      *

      * @since 2.0

      */

     protected static boolean IGNORE_SSL_VALIDITY_DATES =

         Boolean.valueOf( System.getProperty( "maven.wagon.http.ssl.ignore.validity.dates", "true" ) );

     static

     {

         if ( !useClientManagerPooled )

         {

             System.out.println( "http connection pool disabled in wagon http" );

         }

         else

         {

             ThreadSafeClientConnManager threadSafeClientConnManager = new ThreadSafeClientConnManager();

             int maxPerRoute =

                 Integer.parseInt( System.getProperty( "maven.wagon.httpconnectionManager.maxPerRoute", "20" ) );

             threadSafeClientConnManager.setDefaultMaxPerRoute( maxPerRoute );

             int maxTotal = Integer.parseInt( System.getProperty( "maven.wagon.httpconnectionManager.maxTotal", "40" ) );

             threadSafeClientConnManager.setDefaultMaxPerRoute( maxPerRoute );

             threadSafeClientConnManager.setMaxTotal( maxTotal );

             if ( sslEasy )

             {

                 try

                 {

                     SSLSocketFactory sslSocketFactory =

                         new SSLSocketFactory( EasyX509TrustManager.createEasySSLContext(), sslAllowAll

                             ? new EasyHostNameVerifier()

                             : new BrowserCompatHostnameVerifier() );

                     Scheme httpsScheme = new Scheme( "https", 443, sslSocketFactory );

                     threadSafeClientConnManager.getSchemeRegistry().register( httpsScheme );

                 }

                 catch ( IOException e )

                 {

                     throw new RuntimeException( "failed to init SSLSocket Factory " + e.getMessage(), e );

                 }

             }

             System.out.println( " wagon http use multi threaded http connection manager maxPerRoute "

                                     + threadSafeClientConnManager.getDefaultMaxPerRoute() + ", max total "

                                     + threadSafeClientConnManager.getMaxTotal() );

             connectionManagerPooled = threadSafeClientConnManager;

         }

     }

     /**

      * disable all host name verification

      *

      * @since 2.0

      */

     private static class EasyHostNameVerifier

         implements X509HostnameVerifier

     {

         public void verify( String s, SSLSocket sslSocket )

             throws IOException

         {

             //no op

         }

         public void verify( String s, X509Certificate x509Certificate )

             throws SSLException

         {

             //no op

         }

         public void verify( String s, String[] strings, String[] strings1 )

             throws SSLException

         {

             //no op

         }

         public boolean verify( String s, SSLSession sslSession )

         {

             return true;

         }

     }

     public ClientConnectionManager getConnectionManager()

     {

         if ( !useClientManagerPooled )

         {

             return clientConnectionManager;

         }

         return connectionManagerPooled;

     }

     public static void setConnectionManagerPooled( ClientConnectionManager clientConnectionManager )

     {

         connectionManagerPooled = clientConnectionManager;

     }

     public static void setUseClientManagerPooled( boolean pooledClientManager )

     {

         useClientManagerPooled = pooledClientManager;

     }

     /**

      * @plexus.configuration

      * @deprecated Use httpConfiguration instead.

      */

     private Properties httpHeaders;

     /**

      * @since 1.0-beta-6

      */

     private HttpConfiguration httpConfiguration;

     private HttpGet getMethod;

     public void openConnectionInternal()

     {

         repository.setUrl( getURL( repository ) );

         client = new DefaultHttpClient( getConnectionManager() );

         // WAGON-273: default the cookie-policy to browser compatible

         client.getParams().setParameter( ClientPNames.COOKIE_POLICY, CookiePolicy.BROWSER_COMPATIBILITY );

         String username = null;

         String password = null;

         if ( authenticationInfo != null )

         {

             username = authenticationInfo.getUserName();

             password = authenticationInfo.getPassword();

         }

         if ( StringUtils.isNotEmpty( username ) && StringUtils.isNotEmpty( password ) )

         {

             Credentials creds = new UsernamePasswordCredentials( username, password );

             String host = getRepository().getHost();

             int port = getRepository().getPort() > -1 ? getRepository().getPort() : AuthScope.ANY_PORT;

             client.getCredentialsProvider().setCredentials( new AuthScope( host, port ), creds );

             AuthCache authCache = new BasicAuthCache();

             BasicScheme basicAuth = new BasicScheme();

             HttpHost targetHost = new HttpHost( repository.getHost(), repository.getPort(), repository.getProtocol() );

             authCache.put( targetHost, basicAuth );

             localContext = new BasicHttpContext();

             localContext.setAttribute( ClientContext.AUTH_CACHE, authCache );

         }

         ProxyInfo proxyInfo = getProxyInfo( getRepository().getProtocol(), getRepository().getHost() );

         if ( proxyInfo != null )

         {

             String proxyUsername = proxyInfo.getUserName();

             String proxyPassword = proxyInfo.getPassword();

             String proxyHost = proxyInfo.getHost();

             int proxyPort = proxyInfo.getPort();

             String proxyNtlmHost = proxyInfo.getNtlmHost();

             String proxyNtlmDomain = proxyInfo.getNtlmDomain();

             if ( proxyHost != null )

             {

                 HttpHost proxy = new HttpHost( proxyHost, proxyPort );

                 if ( proxyUsername != null && proxyPassword != null )

                 {

                     Credentials creds;

                     if ( proxyNtlmHost != null || proxyNtlmDomain != null )

                     {

                         creds = new NTCredentials( proxyUsername, proxyPassword, proxyNtlmHost, proxyNtlmDomain );

                     }

                     else

                     {

                         creds = new UsernamePasswordCredentials( proxyUsername, proxyPassword );

                     }

                     int port = proxyInfo.getPort() > -1 ? proxyInfo.getPort() : AuthScope.ANY_PORT;

                     AuthScope authScope = new AuthScope( proxyHost, port );

                     client.getCredentialsProvider().setCredentials( authScope, creds );

                 }

                 client.getParams().setParameter( ConnRoutePNames.DEFAULT_PROXY, proxy );

             }

         }

     }

     public void closeConnection()

     {

         if ( !useClientManagerPooled )

         {

             getConnectionManager().shutdown();

         }

     }

     public void put( File source, String resourceName )

         throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException

     {

         Resource resource = new Resource( resourceName );

         firePutInitiated( resource, source );

         resource.setContentLength( source.length() );

         resource.setLastModified( source.lastModified() );

         put( null, resource, source );

     }

     public void putFromStream( final InputStream stream, String destination, long contentLength, long lastModified )

         throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException

     {

         Resource resource = new Resource( destination );

         firePutInitiated( resource, null );

         resource.setContentLength( contentLength );

         resource.setLastModified( lastModified );

         put( stream, resource, null );

     }

     private void put( final InputStream stream, Resource resource, File source )

         throws TransferFailedException, AuthorizationException, ResourceDoesNotExistException

     {

         StringBuilder url = new StringBuilder( getRepository().getUrl() );

         String[] parts = StringUtils.split( resource.getName(), "/" );

         for ( String part : parts )

         {

             // TODO: Fix encoding...

             // url += "/" + URLEncoder.encode( parts[i], System.getProperty("file.encoding") );

             if ( !url.toString().endsWith( "/" ) )

             {

                 url.append( '/' );

             }

             url.append( URLEncoder.encode( part ) );

         }

         //Parent directories need to be created before posting

         try

         {

             mkdirs( PathUtils.dirname( resource.getName() ) );

         }

         catch ( HttpException he )

         {

             fireTransferError( resource, he, TransferEvent.REQUEST_GET );

         }

         catch ( IOException e )

         {

             fireTransferError( resource, e, TransferEvent.REQUEST_GET );

         }

         HttpPut putMethod = new HttpPut( url.toString() );

         firePutStarted( resource, source );

         try

         {

             putMethod.setEntity( new RequestEntityImplementation( stream, resource, this, source ) );

             HttpResponse response;

             try

             {

                 response = execute( putMethod );

             }

             catch ( IOException e )

             {

                 fireTransferError( resource, e, TransferEvent.REQUEST_PUT );

                 throw new TransferFailedException( e.getMessage(), e );

             }

             catch ( HttpException e )

             {

                 fireTransferError( resource, e, TransferEvent.REQUEST_PUT );

                 throw new TransferFailedException( e.getMessage(), e );

             }

             int statusCode = response.getStatusLine().getStatusCode();

             String reasonPhrase = ", ReasonPhrase:" + response.getStatusLine().getReasonPhrase() + ".";

             fireTransferDebug( url + " - Status code: " + statusCode + reasonPhrase );

             // Check that we didn't run out of retries.

             switch ( statusCode )

             {

                 // Success Codes

                 case HttpStatus.SC_OK: // 200

                 case HttpStatus.SC_CREATED: // 201

                 case HttpStatus.SC_ACCEPTED: // 202

                 case HttpStatus.SC_NO_CONTENT:  // 204

                     break;

                 case SC_NULL:

                 {

                     TransferFailedException e =

                         new TransferFailedException( "Failed to transfer file: " + url + reasonPhrase );

                     fireTransferError( resource, e, TransferEvent.REQUEST_PUT );

                     throw e;

                 }

                 case HttpStatus.SC_FORBIDDEN:

                     fireSessionConnectionRefused();

                     throw new AuthorizationException( "Access denied to: " + url + reasonPhrase );

                 case HttpStatus.SC_NOT_FOUND:

                     throw new ResourceDoesNotExistException( "File: " + url + " does not exist" + reasonPhrase );

                     //add more entries here

                 default:

                 {

                     TransferFailedException e = new TransferFailedException(

                         "Failed to transfer file: " + url + ". Return code is: " + statusCode + reasonPhrase );

                     fireTransferError( resource, e, TransferEvent.REQUEST_PUT );

                     throw e;

                 }

             }

             firePutCompleted( resource, source );

         }

         finally

         {

             putMethod.abort();

         }

     }

     protected void mkdirs( String dirname )

         throws HttpException, IOException

     {

         // nothing to do

     }

     public boolean resourceExists( String resourceName )

         throws TransferFailedException, AuthorizationException

     {

         String repositoryUrl = getRepository().getUrl();

         String url = repositoryUrl + ( repositoryUrl.endsWith( "/" ) ? "" : "/" ) + resourceName;

         HttpHead headMethod = new HttpHead( url );

         HttpResponse response = null;

         int statusCode;

         try

         {

             response = execute( headMethod );

         }

         catch ( IOException e )

         {

             throw new TransferFailedException( e.getMessage(), e );

         }

         catch ( HttpException e )

         {

             throw new TransferFailedException( e.getMessage(), e );

         }

         try

         {

             statusCode = response.getStatusLine().getStatusCode();

             String reasonPhrase = ", ReasonPhrase:" + response.getStatusLine().getReasonPhrase() + ".";

             switch ( statusCode )

             {

                 case HttpStatus.SC_OK:

                     return true;

                 case HttpStatus.SC_NOT_MODIFIED:

                     return true;

                 case SC_NULL:

                     throw new TransferFailedException( "Failed to transfer file: " + url + reasonPhrase );

                 case HttpStatus.SC_FORBIDDEN:

                     throw new AuthorizationException( "Access denied to: " + url + reasonPhrase );

                 case HttpStatus.SC_UNAUTHORIZED:

                     throw new AuthorizationException( "Not authorized" + reasonPhrase );

                 case HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED:

                     throw new AuthorizationException( "Not authorized by proxy" + reasonPhrase );

                 case HttpStatus.SC_NOT_FOUND:

                     return false;

                 //add more entries here

                 default:

                     throw new TransferFailedException(

                         "Failed to transfer file: " + url + ". Return code is: " + statusCode + reasonPhrase );

             }

         }

         finally

         {

             headMethod.abort();

         }

     }

     protected HttpResponse execute( HttpUriRequest httpMethod )

         throws HttpException, IOException

     {

         int statusCode = SC_NULL;

         setParameters( httpMethod );

         setHeaders( httpMethod );

         client.getParams().setParameter( CoreProtocolPNames.USER_AGENT, getUserAgent( httpMethod ) );

         return client.execute( httpMethod, localContext );

     }

     protected void setParameters( HttpUriRequest method )

     {

         HttpMethodConfiguration config =

             httpConfiguration == null ? null : httpConfiguration.getMethodConfiguration( method );

         if ( config != null )

         {

             HttpParams params = config.asMethodParams( method.getParams() );

             if ( params != null )

             {

                 method.setParams( params );

             }

         }

         if ( config == null || config.getReadTimeout() == HttpMethodConfiguration.DEFAULT_CONNECTION_TIMEOUT )

         {

             method.getParams().setParameter( CoreConnectionPNames.SO_TIMEOUT, getTimeout() );

         }

     }

     protected void setHeaders( HttpUriRequest method )

     {

         HttpMethodConfiguration config =

             httpConfiguration == null ? null : httpConfiguration.getMethodConfiguration( method );

         if ( config == null || config.isUseDefaultHeaders() )

         {

             // TODO: merge with the other headers and have some better defaults, unify with lightweight headers

             method.addHeader( "Cache-control", "no-cache" );

             method.addHeader( "Cache-store", "no-store" );

             method.addHeader( "Pragma", "no-cache" );

             method.addHeader( "Expires", "0" );

             method.addHeader( "Accept-Encoding", "gzip" );

         }

         if ( httpHeaders != null )

         {

             for ( Map.Entry<Object, Object> entry : httpHeaders.entrySet() )

             {

                 method.addHeader( (String) entry.getKey(), (String) entry.getValue() );

             }

         }

         Header[] headers = config == null ? null : config.asRequestHeaders();

         if ( headers != null )

         {

             for ( int i = 0; i < headers.length; i++ )

             {

                 method.addHeader( headers[i] );

             }

         }

     }

     protected String getUserAgent( HttpUriRequest method )

     {

         if ( httpHeaders != null )

         {

             String value = (String) httpHeaders.get( "User-Agent" );

             if ( value != null )

             {

                 return value;

             }

         }

         HttpMethodConfiguration config =

             httpConfiguration == null ? null : httpConfiguration.getMethodConfiguration( method );

         if ( config != null )

         {

             return (String) config.getHeaders().get( "User-Agent" );

         }

         return null;

     }

     /**

      * getUrl

      * Implementors can override this to remove unwanted parts of the url such as role-hints

      *

      * @param repository

      * @return

      */

     protected String getURL( Repository repository )

     {

         return repository.getUrl();

     }

     public HttpConfiguration getHttpConfiguration()

     {

         return httpConfiguration;

     }

     public void setHttpConfiguration( HttpConfiguration httpConfiguration )

     {

         this.httpConfiguration = httpConfiguration;

     }

     public void fillInputData( InputData inputData )

         throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException

     {

         Resource resource = inputData.getResource();

         String repositoryUrl = getRepository().getUrl();

         String url = repositoryUrl + ( repositoryUrl.endsWith( "/" ) ? "" : "/" ) + resource.getName();

         getMethod = new HttpGet( url );

         long timestamp = resource.getLastModified();

         if ( timestamp > 0 )

         {

             SimpleDateFormat fmt = new SimpleDateFormat( "EEE, dd-MMM-yy HH:mm:ss zzz", Locale.US );

             fmt.setTimeZone( GMT_TIME_ZONE );

             Header hdr = new BasicHeader( "If-Modified-Since", fmt.format( new Date( timestamp ) ) );

             fireTransferDebug( "sending ==> " + hdr + "(" + timestamp + ")" );

             getMethod.addHeader( hdr );

         }

         HttpResponse response;

         int statusCode;

         try

         {

             response = execute( getMethod );

         }

         catch ( IOException e )

         {

             fireTransferError( resource, e, TransferEvent.REQUEST_GET );

             throw new TransferFailedException( e.getMessage(), e );

         }

         catch ( HttpException e )

         {

             fireTransferError( resource, e, TransferEvent.REQUEST_GET );

             throw new TransferFailedException( e.getMessage(), e );

         }

         statusCode = response.getStatusLine().getStatusCode();

         String reasonPhrase = ", ReasonPhrase:" + response.getStatusLine().getReasonPhrase() + ".";

         fireTransferDebug( url + " - Status code: " + statusCode + reasonPhrase );

         // TODO [BP]: according to httpclient docs, really should swallow the output on error. verify if that is

         // required

         switch ( statusCode )

         {

             case HttpStatus.SC_OK:

                 break;

             case HttpStatus.SC_NOT_MODIFIED:

                 // return, leaving last modified set to original value so getIfNewer should return unmodified

                 return;

             case SC_NULL:

             {

                 TransferFailedException e =

                     new TransferFailedException( "Failed to transfer file: " + url + reasonPhrase );

                 fireTransferError( resource, e, TransferEvent.REQUEST_GET );

                 throw e;

             }

             case HttpStatus.SC_FORBIDDEN:

                 fireSessionConnectionRefused();

                 throw new AuthorizationException( "Access denied to: " + url + reasonPhrase );

             case HttpStatus.SC_UNAUTHORIZED:

                 fireSessionConnectionRefused();

                 throw new AuthorizationException( "Not authorized" + reasonPhrase );

             case HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED:

                 fireSessionConnectionRefused();

                 throw new AuthorizationException( "Not authorized by proxy" + reasonPhrase );

             case HttpStatus.SC_NOT_FOUND:

                 throw new ResourceDoesNotExistException( "File: " + url + reasonPhrase );

                 // add more entries here

             default:

             {

                 cleanupGetTransfer( resource );

                 TransferFailedException e = new TransferFailedException(

                     "Failed to transfer file: " + url + ". Return code is: " + statusCode + reasonPhrase );

                 fireTransferError( resource, e, TransferEvent.REQUEST_GET );

                 throw e;

             }

         }

         InputStream is;

         Header contentLengthHeader = response.getFirstHeader( "Content-Length" );

         if ( contentLengthHeader != null )

         {

             try

             {

                 long contentLength = Integer.valueOf( contentLengthHeader.getValue() ).intValue();

                 resource.setContentLength( contentLength );

             }

             catch ( NumberFormatException e )

             {

                 fireTransferDebug(

                     "error parsing content length header '" + contentLengthHeader.getValue() + "' " + e );

             }

         }

         Header lastModifiedHeader = response.getFirstHeader( "Last-Modified" );

         long lastModified = 0;

         if ( lastModifiedHeader != null )

         {

             try

             {

                 lastModified = DateUtils.parseDate( lastModifiedHeader.getValue() ).getTime();

                 resource.setLastModified( lastModified );

             }

             catch ( DateParseException e )

             {

                 fireTransferDebug( "Unable to parse last modified header" );

             }

             fireTransferDebug( "last-modified = " + lastModifiedHeader.getValue() + " (" + lastModified + ")" );

         }

         Header contentEncoding = response.getFirstHeader( "Content-Encoding" );

         boolean isGZipped = contentEncoding == null ? false : "gzip".equalsIgnoreCase( contentEncoding.getValue() );

         try

         {

             is = response.getEntity().getContent();

             if ( isGZipped )

             {

                 is = new GZIPInputStream( is );

             }

         }

         catch ( IOException e )

         {

             fireTransferError( resource, e, TransferEvent.REQUEST_GET );

             String msg =

                 "Error occurred while retrieving from remote repository:" + getRepository() + ": " + e.getMessage();

             throw new TransferFailedException( msg, e );

         }

         inputData.setInputStream( is );

     }

     protected void cleanupGetTransfer( Resource resource )

     {

         if ( getMethod != null )

         {

             getMethod.abort();

         }

     }

     public void fillOutputData( OutputData outputData )

         throws TransferFailedException

     {

         throw new IllegalStateException( "Should not be using the streaming wagon for HTTP PUT" );

     }

     public Properties getHttpHeaders()

     {

         return httpHeaders;

     }

     public void setHttpHeaders( Properties httpHeaders )

     {

         this.httpHeaders = httpHeaders;

     }

 }