1 /*
2 * Copyright (c) 2002-2021, City of Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.plugins.blobstore.service.download;
35
36 import fr.paris.lutece.plugins.blobstore.util.BlobStoreConstants;
37 import fr.paris.lutece.plugins.blobstore.util.BlobStoreLibConstants;
38 import fr.paris.lutece.plugins.blobstore.util.BlobStoreUtils;
39 import fr.paris.lutece.portal.service.util.AppPropertiesService;
40 import fr.paris.lutece.util.url.UrlItem;
41
42 import java.util.ArrayList;
43 import java.util.Date;
44 import java.util.List;
45
46 /**
47 * Uses JSP to serve file.
48 *
49 */
50 public class JSPBlobStoreDownloadUrlService implements IBlobStoreDownloadUrlService
51 {
52 private static final long serialVersionUID = 1L;
53
54 /**
55 * Gets the file url
56 *
57 * @param strBlobStore
58 * the blob store
59 * @param strBlobKey
60 * the blob key
61 * @return the url
62 */
63 @Override
64 public String getFileUrl( String strBlobStore, String strBlobKey )
65 {
66 return getBlobUrl( strBlobStore, strBlobKey, BlobStoreConstants.JSP_DO_DOWNLOAD_FILE );
67 }
68
69 /**
70 * Gets the downloadUrl
71 *
72 * @param strBlobStore
73 * the blobstore
74 * @param strBlobKey
75 * the key
76 * @return the url
77 */
78 @Override
79 public String getDownloadUrl( String strBlobStore, String strBlobKey )
80 {
81 return getBlobUrl( strBlobStore, strBlobKey, BlobStoreConstants.JSP_DO_DOWNLOAD_BLOB );
82 }
83
84 /**
85 * Builds the blob url
86 *
87 * @param strBlobStore
88 * the blob store
89 * @param strBlobKey
90 * the blob key
91 * @param strJsp
92 * the jsp
93 * @return the blob url
94 */
95 private static String getBlobUrl( String strBlobStore, String strBlobKey, String strJsp )
96 {
97 String strBaseUrl = AppPropertiesService.getProperty( BlobStoreLibConstants.PROPERTY_BASE_URL,
98 AppPropertiesService.getProperty( BlobStoreLibConstants.PROPERTY_PROD_URL ) );
99 String strBlobUrl;
100
101 if ( strBaseUrl != null )
102 {
103 if ( !strBaseUrl.endsWith( "/" ) )
104 {
105 strBaseUrl += "/";
106 }
107
108 UrlItem urlItem = new UrlItem( strBaseUrl + strJsp );
109 urlItem.addParameter( BlobStoreLibConstants.PARAMETER_BLOB_STORE, strBlobStore );
110 urlItem.addParameter( BlobStoreLibConstants.PARAMETER_BLOB_KEY, strBlobKey );
111
112 List<String> listElements = new ArrayList<String>( );
113 listElements.add( strBlobStore );
114 listElements.add( strBlobKey );
115
116 String strTimestamp = Long.toString( new Date( ).getTime( ) );
117 String strSignature = BlobStoreUtils.getRequestAuthenticator( ).buildSignature( listElements, strTimestamp );
118
119 urlItem.addParameter( BlobStoreConstants.PARAMETER_TIMESTAMP, strTimestamp );
120 urlItem.addParameter( BlobStoreConstants.PARAMETER_SIGNATURE, strSignature );
121
122 strBlobUrl = urlItem.getUrl( );
123 }
124 else
125 {
126 strBlobUrl = null;
127 }
128
129 return strBlobUrl;
130 }
131 }