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1 | <?php |
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2 | |
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3 | /** |
4 | * download.php |
5 | * |
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6 | * Copyright (c) 1999-2002 The SquirrelMail Project Team |
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7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
8 | * |
9 | * Handles attachment downloads to the users computer. |
10 | * Also allows displaying of attachments when possible. |
11 | * |
12 | * $Id$ |
13 | */ |
14 | |
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15 | /* Path for SquirrelMail required files. */ |
16 | define('SM_PATH','../'); |
17 | |
18 | /* SquirrelMail required files. */ |
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19 | require_once(SM_PATH . 'include/validate.php'); |
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20 | require_once(SM_PATH . 'functions/imap.php'); |
21 | require_once(SM_PATH . 'functions/mime.php'); |
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22 | |
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23 | header('Pragma: '); |
24 | header('Cache-Control: cache'); |
25 | |
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26 | /* globals */ |
27 | |
28 | $key = $_COOKIE['key']; |
29 | $username = $_SESSION['username']; |
30 | $onetimepad = $_SESSION['onetimepad']; |
31 | $mailbox = $_GET['mailbox']; |
32 | $passed_id = $_GET['passed_id']; |
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33 | $messages = $_SESSION['messages']; |
34 | if (!isset($passed_ent_id)) { |
35 | $passed_ent_id = ''; |
36 | } else { |
37 | $passed_ent_id = $_GET['passed_ent_id']; |
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38 | } |
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39 | |
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40 | /* end globals */ |
41 | |
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42 | $mailbox = decodeHeader($mailbox); |
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43 | |
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44 | global $uid_support; |
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45 | |
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46 | $imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0); |
47 | $mbx_response = sqimap_mailbox_select($imapConnection, $mailbox); |
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48 | |
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49 | $message = &$messages[$mbx_response['UIDVALIDITY']]["$passed_id"]; |
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50 | if (!is_object($message)) { |
51 | $message = sqimap_get_message($imapConnection,$passed_id, $mailbox); |
52 | } |
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53 | $subject = $message->rfc822_header->subject; |
54 | $message = &$message->getEntity($ent_id); |
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55 | $header = $message->header; |
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56 | if ($message->rfc822_header) { |
57 | $subject = $message->rfc822_header->subject; |
58 | $charset = $header->content_type->properties['charset']; |
59 | } else { |
60 | $header = $message->header; |
61 | $charset = $header->getParameter('charset'); |
62 | } |
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63 | $type0 = $header->type0; |
64 | $type1 = $header->type1; |
65 | $encoding = strtolower($header->encoding); |
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66 | |
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67 | /* |
68 | * lets redefine message as this particular entity that we wish to display. |
69 | * it should hold only the header for this entity. We need to fetch the body |
70 | * yet before we can display anything. |
71 | */ |
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72 | |
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73 | if (isset($override_type0)) { |
74 | $type0 = $override_type0; |
75 | } |
76 | if (isset($override_type1)) { |
77 | $type1 = $override_type1; |
78 | } |
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79 | $filename = ''; |
80 | if (is_object($message->header->disposition)) { |
81 | $filename = decodeHeader($header->disposition->getProperty('filename')); |
82 | if (!$filename) { |
83 | $filename = decodeHeader($header->disposition->getProperty('name')); |
84 | } |
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85 | } |
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86 | if (strlen($filename) < 1) { |
87 | if ($type1 == 'plain' && $type0 == 'text') { |
88 | $suffix = 'txt'; |
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89 | $filename = $subject . '.txt'; |
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90 | } else if ($type1 == 'richtext' && $type0 == 'text') { |
91 | $suffix = 'rtf'; |
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92 | $filename = $subject . '.rtf'; |
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93 | } else if ($type1 == 'postscript' && $type0 == 'application') { |
94 | $suffix = 'ps'; |
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95 | $filename = $subject . '.ps'; |
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96 | } else if ($type1 == 'rfc822' && $type0 == 'message') { |
97 | $suffix = 'eml'; |
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98 | $filename = $subject . '.msg'; |
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99 | } else { |
100 | $suffix = $type1; |
101 | } |
102 | |
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103 | if (strlen($filename) < 1) { |
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104 | $filename = "untitled$ent_id.$suffix"; |
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105 | } else { |
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106 | $filename = "$filename.$suffix"; |
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107 | } |
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108 | } |
109 | |
110 | /* |
111 | * Note: |
112 | * The following sections display the attachment in different |
113 | * ways depending on how they choose. The first way will download |
114 | * under any circumstance. This sets the Content-type to be |
115 | * applicatin/octet-stream, which should be interpreted by the |
116 | * browser as "download me". |
117 | * The second method (view) is used for images or other formats |
118 | * that should be able to be handled by the browser. It will |
119 | * most likely display the attachment inline inside the browser. |
120 | * And finally, the third one will be used by default. If it |
121 | * is displayable (text or html), it will load them up in a text |
122 | * viewer (built in to squirrelmail). Otherwise, it sets the |
123 | * content-type as application/octet-stream |
124 | */ |
125 | if (isset($absolute_dl) && $absolute_dl == 'true') { |
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126 | DumpHeaders($type0, $type1, $filename, 1); |
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127 | } else { |
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128 | DumpHeaders($type0, $type1, $filename, 0); |
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129 | } |
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130 | /* be aware that any warning caused by download.php will corrupt the |
131 | * attachment in case of ERROR reporting = E_ALL and the output is the screen */ |
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132 | mime_print_body_lines ($imapConnection, $passed_id, $ent_id, $encoding); |
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133 | |
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134 | /* |
135 | * This function is verified to work with Netscape and the *very latest* |
136 | * version of IE. I don't know if it works with Opera, but it should now. |
137 | */ |
138 | function DumpHeaders($type0, $type1, $filename, $force) { |
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139 | global $_SERVER, $languages, $squirrelmail_language; |
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140 | $isIE = 0; |
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141 | |
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142 | $HTTP_USER_AGENT = $_SERVER['HTTP_USER_AGENT']; |
143 | |
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144 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false && |
145 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
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146 | $isIE = 1; |
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147 | } |
148 | |
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149 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false && |
150 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
151 | $isIE6 = 1; |
152 | } |
153 | |
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154 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
155 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) { |
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156 | $filename = |
157 | $languages[$squirrelmail_language]['XTRA_CODE']('downloadfilename', $filename, $HTTP_USER_AGENT); |
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158 | } else { |
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159 | $filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename); |
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160 | } |
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161 | |
162 | // A Pox on Microsoft and it's Office! |
163 | if (! $force) { |
164 | // Try to show in browser window |
165 | header("Content-Disposition: inline; filename=\"$filename\""); |
166 | header("Content-Type: $type0/$type1; name=\"$filename\""); |
167 | } else { |
168 | // Try to pop up the "save as" box |
169 | // IE makes this hard. It pops up 2 save boxes, or none. |
170 | // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP |
171 | // But, accordint to Microsoft, it is "RFC compliant but doesn't |
172 | // take into account some deviations that allowed within the |
173 | // specification." Doesn't that mean RFC non-compliant? |
174 | // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP |
175 | // |
176 | // The best thing you can do for IE is to upgrade to the latest |
177 | // version |
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178 | if ($isIE && !isset($isIE6)) { |
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179 | // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp |
180 | // Do not have quotes around filename, but that applied to |
181 | // "attachment"... does it apply to inline too? |
182 | // |
183 | // This combination seems to work mostly. IE 5.5 SP 1 has |
184 | // known issues (see the Microsoft Knowledge Base) |
185 | header("Content-Disposition: inline; filename=$filename"); |
186 | |
187 | // This works for most types, but doesn't work with Word files |
188 | header("Content-Type: application/download; name=\"$filename\""); |
189 | |
190 | // These are spares, just in case. :-) |
191 | //header("Content-Type: $type0/$type1; name=\"$filename\""); |
192 | //header("Content-Type: application/x-msdownload; name=\"$filename\""); |
193 | //header("Content-Type: application/octet-stream; name=\"$filename\""); |
194 | } else { |
195 | header("Content-Disposition: attachment; filename=\"$filename\""); |
196 | // application/octet-stream forces download for Netscape |
197 | header("Content-Type: application/octet-stream; name=\"$filename\""); |
198 | } |
199 | } |
200 | } |
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201 | ?> |