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-rw-r--r--plugins/filesystem_attachments/filesystem_attachments.php161
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diff --git a/plugins/filesystem_attachments/filesystem_attachments.php b/plugins/filesystem_attachments/filesystem_attachments.php
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+<?php
+/**
+ * Filesystem Attachments
+ *
+ * This is a core plugin which provides basic, filesystem based
+ * attachment temporary file handling. This includes storing
+ * attachments of messages currently being composed, writing attachments
+ * to disk when drafts with attachments are re-opened and writing
+ * attachments to disk for inline display in current html compositions.
+ *
+ * Developers may wish to extend this class when creating attachment
+ * handler plugins:
+ * require_once('plugins/filesystem_attachments/filesystem_attachments.php');
+ * class myCustom_attachments extends filesystem_attachments
+ *
+ * @author Ziba Scott <ziba@umich.edu>
+ * @author Thomas Bruederli <roundcube@gmail.com>
+ *
+ */
+class filesystem_attachments extends rcube_plugin
+{
+ public $task = '?(?!login).*';
+
+ function init()
+ {
+ // Save a newly uploaded attachment
+ $this->add_hook('attachment_upload', array($this, 'upload'));
+
+ // Save an attachment from a non-upload source (draft or forward)
+ $this->add_hook('attachment_save', array($this, 'save'));
+
+ // Remove an attachment from storage
+ $this->add_hook('attachment_delete', array($this, 'remove'));
+
+ // When composing an html message, image attachments may be shown
+ $this->add_hook('attachment_display', array($this, 'display'));
+
+ // Get the attachment from storage and place it on disk to be sent
+ $this->add_hook('attachment_get', array($this, 'get'));
+
+ // Delete all temp files associated with this user
+ $this->add_hook('attachments_cleanup', array($this, 'cleanup'));
+ $this->add_hook('session_destroy', array($this, 'cleanup'));
+ }
+
+ /**
+ * Save a newly uploaded attachment
+ */
+ function upload($args)
+ {
+ $args['status'] = false;
+ $group = $args['group'];
+ $rcmail = rcmail::get_instance();
+
+ // use common temp dir for file uploads
+ $temp_dir = $rcmail->config->get('temp_dir');
+ $tmpfname = tempnam($temp_dir, 'rcmAttmnt');
+
+ if (move_uploaded_file($args['path'], $tmpfname) && file_exists($tmpfname)) {
+ $args['id'] = $this->file_id();
+ $args['path'] = $tmpfname;
+ $args['status'] = true;
+
+ // Note the file for later cleanup
+ $_SESSION['plugins']['filesystem_attachments'][$group][] = $tmpfname;
+ }
+
+ return $args;
+ }
+
+ /**
+ * Save an attachment from a non-upload source (draft or forward)
+ */
+ function save($args)
+ {
+ $group = $args['group'];
+ $args['status'] = false;
+
+ if (!$args['path']) {
+ $rcmail = rcmail::get_instance();
+ $temp_dir = $rcmail->config->get('temp_dir');
+ $tmp_path = tempnam($temp_dir, 'rcmAttmnt');
+
+ if ($fp = fopen($tmp_path, 'w')) {
+ fwrite($fp, $args['data']);
+ fclose($fp);
+ $args['path'] = $tmp_path;
+ } else
+ return $args;
+ }
+
+ $args['id'] = $this->file_id();
+ $args['status'] = true;
+
+ // Note the file for later cleanup
+ $_SESSION['plugins']['filesystem_attachments'][$group][] = $args['path'];
+
+ return $args;
+ }
+
+ /**
+ * Remove an attachment from storage
+ * This is triggered by the remove attachment button on the compose screen
+ */
+ function remove($args)
+ {
+ $args['status'] = @unlink($args['path']);
+ return $args;
+ }
+
+ /**
+ * When composing an html message, image attachments may be shown
+ * For this plugin, the file is already in place, just check for
+ * the existance of the proper metadata
+ */
+ function display($args)
+ {
+ $args['status'] = file_exists($args['path']);
+ return $args;
+ }
+
+ /**
+ * This attachment plugin doesn't require any steps to put the file
+ * on disk for use. This stub function is kept here to make this
+ * class handy as a parent class for other plugins which may need it.
+ */
+ function get($args)
+ {
+ return $args;
+ }
+
+ /**
+ * Delete all temp files associated with this user
+ */
+ function cleanup($args)
+ {
+ // $_SESSION['compose']['attachments'] is not a complete record of
+ // temporary files because loading a draft or starting a forward copies
+ // the file to disk, but does not make an entry in that array
+ if (is_array($_SESSION['plugins']['filesystem_attachments'])){
+ foreach ($_SESSION['plugins']['filesystem_attachments'] as $group => $files) {
+ if ($args['group'] && $args['group'] != $group)
+ continue;
+ foreach ((array)$files as $filename){
+ if(file_exists($filename)){
+ unlink($filename);
+ }
+ }
+ unset($_SESSION['plugins']['filesystem_attachments'][$group]);
+ }
+ }
+ return $args;
+ }
+
+ function file_id()
+ {
+ $userid = rcmail::get_instance()->user->ID;
+ list($usec, $sec) = explode(' ', microtime());
+ return preg_replace('/[^0-9]/', '', $userid . $sec . $usec);
+ }
+}