1 files changed, 161 insertions, 0 deletions
diff --git a/plugins/filesystem_attachments/filesystem_attachments.php b/plugins/filesystem_attachments/filesystem_attachments.php
new file mode 100644
index 000000000..12c78d973
--- /dev/null
+++ b/plugins/filesystem_attachments/filesystem_attachments.php
@@ -0,0 +1,161 @@
+<?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);
+    }
+}