KTDownloadManager.inc.php
4.51 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
<?
/**
*
* KTDownloadManager manages files in the download_files table.
*
* The contents of this file are subject to the KnowledgeTree Public
* License Version 1.1.2 ("License"); You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.knowledgetree.com/KPL
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights and
* limitations under the License.
*
* All copies of the Covered Code must include on each user interface screen:
* (i) the "Powered by KnowledgeTree" logo and
* (ii) the KnowledgeTree copyright notice
* in the same form as they appear in the distribution. See the License for
* requirements.
*
* The Original Code is: KnowledgeTree Open Source
*
* The Initial Developer of the Original Code is The Jam Warehouse Software
* (Pty) Ltd, trading as KnowledgeTree.
* Portions created by The Jam Warehouse Software (Pty) Ltd are Copyright
* (C) 2007 The Jam Warehouse Software (Pty) Ltd;
* All Rights Reserved.
* Contributor( s): ______________________________________
*
*/
class KTDownloadManager
{
var $session;
var $age;
var $download_url;
var $random;
/**
* Constructor for the download manager.
*
* @param KTAPI_Session $session
* @return KTDownloadManager
*/
function KTDownloadManager()
{
$config = &KTConfig::getSingleton();
$this->age = $config->get('webservice/downloadExpiry',5);
$this->download_url = $config->get('webservice/downloadUrl');
$this->random=$config->get('webservice/randomKeyText','jhsdf8q1jkjpoiudfs7sd3ds1');
}
/**
* Sets the current session.
*
* @param string $session
*/
function set_session($session)
{
$this->session = $session;
}
/**
* This returns
*
* @access public
* @param KTAPI_Document $document
* @return string
*/
function allow_download($document, $content_version=null)
{
assert(!is_null($document));
assert(is_a($document, 'KTAPI_Document'));
$hash = sha1("$document->documentid $this->session $this->random");
$id = DBUtil::autoInsert('download_files',
array(
'document_id'=>$document->documentid,
'session'=>$this->session,
'download_date'=>date('Y-m-d H:i:s'),
'hash'=>$hash
),
array('noid'=>true)
);
return $this->build_url($hash, $document->documentid );
}
/**
* This returns the url used to download a document.
*
* @param string $hash
* @param int $documentid
* @param int $userid
* @return string
*/
function build_url($hash, $documentid )
{
return $this->download_url . "?code=$hash&d=$documentid&u=$this->session";
}
/**
* This starts a download.
*
* @access public
*/
function download($document_id, $hash, $version = null)
{
$sql = "SELECT 1 FROM download_files WHERE hash='$hash' AND session='$this->session' AND document_id=$document_id";
$rows = DBUtil::getResultArray($sql);
if (PEAR::isError($rows))
{
return $rows;
}
if (count($rows) == 0)
{
return new PEAR_Error('Invalid session.');
}
$storage =& KTStorageManagerUtil::getSingleton();
$ktapi = &new KTAPI();
$res = $ktapi->get_active_session($this->session);
if (PEAR::isError($res))
{
return $res;
}
$document = $ktapi->get_document_by_id($document_id);
if (PEAR::isError($document))
{
return $document;
}
if (!empty($version))
{
$version = KTDocumentContentVersion::get($version);
$res = $storage->downloadVersion($document->document, $version);
}
else
{
$res = $storage->download($document->document);
}
if (PEAR::isError($res))
{
return $res;
}
$sql = "DELETE FROM download_files WHERE hash='$hash' AND session='$this->session' AND document_id=$document_id";
$result = DBUtil::runQuery($sql);
return true;
}
/**
* This will remove any temporary files that have not been dealt with in the correct timeframe.
*
* @access public
*/
function cleanup()
{
list($year,$mon,$day,$hour, $min) = explode(':', date('Y:m:d:H:i'));
$expirydate = date('Y-m-d H:i:s', mktime($hour, $min - $this->age, 0, $mon, $day, $year));
$sql = "DELETE FROM download_files WHERE download_date<'$expirydate'";
DBUtil::runQuery($sql);
}
}
?>