Move encryption of filenames to the point where they're transmitted,

rather than where they're generated.   Causes a major performance
improvement, as much of the time spent on an incremental backup was
encrypting the filenames.   Does change the directory hash values, so
first backup post this change can be slower than normal.

src/Tardis/Client.py

@@ -864,7 +864,7 @@ def mkFileInfo(dir, name):
         return None
 
     if stat.S_ISREG(mode) or stat.S_ISDIR(mode) or stat.S_ISLNK(mode):
-        name = crypt.encryptFilename(name)
+        #name = crypt.encryptFilename(name)
         finfo =  {
             'name':   name,
             'inode':  s.st_ino,
@@ -1091,7 +1091,7 @@ def sendPurge(relative):
 
 def sendDirChunks(path, inode, files):
     """ Chunk the directory into dirslice sized chunks, and send each sequentially """
-    if crypt:
+    if crypt.encrypting():
         path = crypt.encryptPath(path)
     message = {
         'message': 'DIR',
@@ -1105,10 +1105,16 @@ def sendDirChunks(path, inode, files):
             logger.debug("---- Generating chunk %d ----", chunkNum)
         chunkNum += 1
         chunk = files[x : x + args.dirslice]
+
+        # Encrypt the names before sending them out
+        if crypt.encrypting():
+            for i in chunk:
+                i['name'] = crypt.encryptFilename(i['name'])
+
         message["files"] = chunk
         message["last"]  = (x + args.dirslice > len(files))
         if verbosity > 3:
-            logger.debug("---- Sending chunk ----")
+            logger.debug("---- Sending chunk at %d ----", x)
         batch = (len(chunk) < args.dirslice)
         batchMessage(message, batch=batch)
 
@@ -1518,6 +1524,8 @@ def createPrefixPath(root, path):
         dirPath = os.path.join(current, d)
         st = os.lstat(dirPath)
         f = mkFileInfo(current, d)
+        if crypt.encrypting():
+            f['name'] = crypt.encryptFilename(f['name'])
         if dirPath not in processedDirs:
             logger.debug("Sending dir entry for: %s", dirPath)
             sendDirEntry(parent, parentDev, [f])

tardis-profile

@@ -1,11 +1,15 @@
 #! /usr/bin/python
 # -*- coding: utf-8 -*-
 
-from Tardis import Client
-import sys
-
+import sys, os.path
 import cProfile
 import time
+
+src = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'src')
+sys.path.insert(0, src)
+
+from Tardis import Client
+
 name = 'tardis.profile.' + str(int(time.time()))
 
 #sys.exit(Client.main())