Added missing index and address handler

indexes.yaml

@@ -611,3 +611,20 @@ indexes:
           name: audit_files_expire
           key:
               metadata.info.expires: 1
+
+    - collection: audit.files
+      type: gridfs # index applies to gridfs database
+      index:
+          name: audit_files_addresses
+          key:
+              metadata.audit: 1
+              metadata.addresses.type: 1
+              metadata.addresses.name: 1
+              metadata.addresses.address: 1
+
+    - collection: audit.files
+      type: gridfs # index applies to gridfs database
+      index:
+          name: audit_files_subject
+          key:
+              metadata.subject: 1

lib/audit-handler.js

@@ -3,6 +3,8 @@
 const ObjectID = require('mongodb').ObjectID;
 const GridFSBucket = require('mongodb').GridFSBucket;
 const log = require('npmlog');
+const libmime = require('libmime');
+const { normalizeAddress } = require('./tools');
 
 class AuditHandler {
     constructor(options) {
@@ -117,6 +119,34 @@ class AuditHandler {
         metadata.audit = metadata.audit || audit;
         metadata.date = metadata.date || new Date();
 
+        const headers = metadata.header || {};
+
+        metadata.subject = ([].concat(headers.subject || []).pop() || '').trim();
+        try {
+            metadata.subject = libmime.decodeWords(metadata.subject);
+        } catch (E) {
+            // ignore
+        }
+
+        metadata.addresses = [];
+        [('from', 'to', 'cc', 'bcc')].forEach(type => {
+            if (headers[type] && headers[type].length) {
+                headers[type].forEach(addr => {
+                    let entry = {
+                        name: addr.name,
+                        address: normalizeAddress(addr.address),
+                        type
+                    };
+                    try {
+                        entry.name = libmime.decodeWords(entry.name);
+                    } catch (E) {
+                        // ignore
+                    }
+                    metadata.addresses.push(entry);
+                });
+            }
+        });
+
         let result = await new Promise((resolve, reject) => {
             let stream = this.gridstore.openUploadStreamWithId(id, null, {
                 contentType: 'message/rfc822',