Source for file download.php

Documentation is available at download.php

  1. <?php
  3. /**
  4. * download.php
  5. *
  6. * Handles attachment downloads to the users computer.
  7. * Also allows displaying of attachments when possible.
  8. *
  9. * @copyright 1999-2020 The SquirrelMail Project Team
  10. * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  11. * @version $Id: download.php 14840 2020年01月07日 07:42:38Z pdontthink $
  12. * @package squirrelmail
  13. */
  15. /** This is the download page */
  16. define ('PAGE_NAME', 'download');
  18. /**
  19. * Path for SquirrelMail required files.
  20. * @ignore
  21. */
  22. define ('SM_PATH','../');
  24. /* SquirrelMail required files. */
  25. require_once(SM_PATH . 'include/validate.php');
  26. require_once(SM_PATH . 'functions/imap.php');
  27. require_once(SM_PATH . 'functions/mime.php');
  29. header ('Pragma: ');
  30. header ('Cache-Control: cache');
  32. /* globals */
  33. sqgetGlobalVar ('key', $key, SQ_COOKIE );
  34. sqgetGlobalVar ('username', $username, SQ_SESSION );
  35. sqgetGlobalVar ('onetimepad', $onetimepad, SQ_SESSION );
  36. sqgetGlobalVar ('messages', $messages, SQ_SESSION );
  37. sqgetGlobalVar ('mailbox', $mailbox, SQ_GET );
  38. sqgetGlobalVar ('ent_id', $ent_id, SQ_GET );
  39. sqgetGlobalVar ('absolute_dl',$absolute_dl, SQ_GET );
  40. if ( sqgetGlobalVar ('passed_id', $temp, SQ_GET ) ) {
  41. $passed_id = (int) $temp;
  42. }
  44. global $default_charset;
  47. /* end globals */
  49. global $uid_support;
  51. global $imap_stream_options; // in case not defined in config
  52. $imapConnection = sqimap_login ($username, $key, $imapServerAddress, $imapPort, 0, $imap_stream_options);
  53. $mbx_response = sqimap_mailbox_select ($imapConnection, $mailbox);
  55. $message = '';
  57. if (isset($messages[$mbx_response['UIDVALIDITY']]["$passed_id"])) {
  58. $message = $messages[$mbx_response['UIDVALIDITY']]["$passed_id"];
  59. }
  61. if (!is_object ($message)) {
  62. $message = sqimap_get_message ($imapConnection,$passed_id, $mailbox);
  63. }
  65. $subject = $message->rfc822_header->subject;
  66. if ($ent_id) {
  67. $message = $message->getEntity ($ent_id);
  68. $header = $message->header ;
  70. if ($message->rfc822_header) {
  71. $subject = $message->rfc822_header->subject;
  72. } else {
  73. $header = $message->header ;
  74. }
  75. $type0 = $header->type0;
  76. $type1 = $header->type1;
  77. $encoding = strtolower ($header->encoding);
  78. } else {
  79. /* raw message */
  80. $type0 = 'message';
  81. $type1 = 'rfc822';
  82. $encoding = '7bit';
  83. $header = $message->header ;
  84. }
  86. /*
  87. * lets redefine message as this particular entity that we wish to display.
  88. * it should hold only the header for this entity. We need to fetch the body
  89. * yet before we can display anything.
  90. */
  92. if (isset($override_type0)) {
  93. $type0 = $override_type0;
  94. }
  95. if (isset($override_type1)) {
  96. $type1 = $override_type1;
  97. }
  98. $filename = '';
  99. if (is_object ($message->header ->disposition)) {
  100. $filename = $header->disposition->getProperty('filename');
  101. if (!$filename) {
  102. $filename = $header->disposition->getProperty('name');
  103. }
  104. if (!$filename) {
  105. $filename = $header->getParameter('name');
  106. }
  107. } else {
  108. $filename = $header->getParameter('name');
  109. }
  111. $filename = decodeHeader ($filename,true,false);
  112. $filename = charset_encode ($filename,$default_charset,false);
  114. // If name is not set, use subject of email
  115. if (strlen ($filename) < 1) {
  116. $filename = decodeHeader ($subject, true, true);
  117. $filename = charset_encode ($filename,$default_charset,false);
  118. if ($type1 == 'plain' && $type0 == 'text')
  119. $suffix = 'txt';
  120. else if ($type1 == 'richtext' && $type0 == 'text')
  121. $suffix = 'rtf';
  122. else if ($type1 == 'postscript' && $type0 == 'application')
  123. $suffix = 'ps';
  124. else if ($type1 == 'rfc822' && $type0 == 'message')
  125. $suffix = 'msg';
  126. else
  127. $suffix = $type1;
  129. if ($filename == '')
  130. $filename = 'untitled' . strip_tags ($ent_id);
  131. $filename = $filename . '.' . $suffix;
  132. }
  134. /**
  135. * Close session in order to prevent script locking on larger
  136. * downloads. SendDownloadHeaders() and mime_print_body_lines()
  137. * don't write information to session. mime_print_body_lines()
  138. * call duration depends on size of attachment and script can
  139. * cause interface lockups, if session is not closed.
  140. */
  143. /*
  144. * Note:
  145. * The following sections display the attachment in different
  146. * ways depending on how they choose. The first way will download
  147. * under any circumstance. This sets the Content-type to be
  148. * applicatin/octet-stream, which should be interpreted by the
  149. * browser as "download me".
  150. * The second method (view) is used for images or other formats
  151. * that should be able to be handled by the browser. It will
  152. * most likely display the attachment inline inside the browser.
  153. * And finally, the third one will be used by default. If it
  154. * is displayable (text or html), it will load them up in a text
  155. * viewer (built in to squirrelmail). Otherwise, it sets the
  156. * content-type as application/octet-stream
  157. */
  158. if (isset($absolute_dl) && $absolute_dl) {
  159. SendDownloadHeaders ($type0, $type1, $filename, 1);
  160. } else {
  161. SendDownloadHeaders ($type0, $type1, $filename, 0);
  162. }
  163. /* be aware that any warning caused by download.php will corrupt the
  164. * attachment in case of ERROR reporting = E_ALL and the output is the screen */
  165. mime_print_body_lines ($imapConnection, $passed_id, $ent_id, $encoding);

Documentation generated on 2020年1月13日 04:24:34 +0100 by phpDocumentor 1.4.3

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