On Fri, 3 Dec 2004 satind...@in.safenet-inc.com wrote: > Hi, > Does openvpn support any plug-in for viewing and modifying the payload > to/from tunnel just before encryption and after decryption? I need to add > some fields in the messages going to and coming from tunnel. I need this for > both control and data messages. > > I looked into 2.0_beta18 and didn't find any. I am planning to add such > plug-in. The point I identified are: > > for changing messages flowing to tunnel: > In the beginning of method encrypt_sign. > > for changing messages flowing from tunnel: > At the end of method process_incoming_link just before processing of > ping and occ messages. > > This is based on my assumption that all messages to tunnel are calling > encrypt_sign method for encrypting the data. Do you have any plan to change > the logic/name/location for these methods which may alter this assumption.
I think that's a reasonable assumption. Note that if you plan on increasing the packet length, then you will need to modify the struct frame fields so that buffers will be sized correctly. James
