diff options
| author | Adam Ierymenko <adam.ierymenko@gmail.com> | 2015-06-13 18:08:00 +0200 |
|---|---|---|
| committer | Adam Ierymenko <adam.ierymenko@gmail.com> | 2015-06-13 18:08:00 +0200 |
| commit | 845955dea53035e8472059ff03feca9f47c0d5fa (patch) | |
| tree | cd0eaf17f5c1669523e7bd3849134376e1cd7f11 /node | |
| parent | 8aa68cd5f135f013a5f58e6bcf95f652d3ec625e (diff) | |
| download | infinitytier-845955dea53035e8472059ff03feca9f47c0d5fa.tar.gz infinitytier-845955dea53035e8472059ff03feca9f47c0d5fa.zip | |
Add definition for VERB_CMA -- GitHub issue #180
Diffstat (limited to 'node')
| -rw-r--r-- | node/Packet.cpp | 1 | ||||
| -rw-r--r-- | node/Packet.hpp | 32 |
2 files changed, 30 insertions, 3 deletions
diff --git a/node/Packet.cpp b/node/Packet.cpp index a81873ff..f75d1df0 100644 --- a/node/Packet.cpp +++ b/node/Packet.cpp @@ -51,6 +51,7 @@ const char *Packet::verbString(Verb v) case VERB_MULTICAST_GATHER: return "MULTICAST_GATHER"; case VERB_MULTICAST_FRAME: return "MULTICAST_FRAME"; case VERB_SET_EPHEMERAL_KEY: return "SET_EPHEMERAL_KEY"; + case VERB_CMA: return "CMA"; } return "(unknown)"; } diff --git a/node/Packet.hpp b/node/Packet.hpp index 2dfb75e4..1ec145d5 100644 --- a/node/Packet.hpp +++ b/node/Packet.hpp @@ -513,8 +513,8 @@ public: * Destination address types and formats (not all of these are used now): * 0 - None -- no destination address data present * 1 - Ethernet address -- format: <[6] Ethernet MAC> - * 4 - 6-byte IPv4 address -- format: <[4] IP>, <[2] port> - * 6 - 18-byte IPv6 address -- format: <[16] IP>, <[2] port> + * 4 - 6-byte IPv4 UDP address/port -- format: <[4] IP>, <[2] port> + * 6 - 18-byte IPv6 UDP address/port -- format: <[16] IP>, <[2] port> * * OK payload: * <[8] timestamp (echoed from original HELLO)> @@ -770,6 +770,9 @@ public: VERB_MULTICAST_FRAME = 14, /* Ephemeral (PFS) key push: + * <[2] flags (unused and reserved, must be 0)> + * <[2] length of padding / extra field section> + * <[...] padding / extra field section> * <[8] 64-bit PFS key set ID sender holds for recipient (0==none)> * <[8] 64-bit PFS key set ID of this key set> * [... begin PFS key record ...] @@ -791,6 +794,12 @@ public: * the first record with common symmetric cipher, public key type, * and relevant flags must be used. * + * The padding section may be filled with an arbitrary amount of random + * or empty payload. This may be used as a countermeasure to prevent PFS + * key pushes from being recognized by packet size vs. other packets in + * the stream. This also provides potential space for additional fields + * that might be indicated in the future by flags. + * * Flags (all unspecified flags must be zero): * 0x01 - FIPS mode, only use record if FIPS compliant crypto in use * @@ -814,7 +823,24 @@ public: * <[8] PFS key set ID of received key set> * <[1] index in record list of chosen key record> */ - VERB_SET_EPHEMERAL_KEY = 15 + VERB_SET_EPHEMERAL_KEY = 15, + + /* "Call me at" -- push of potential endpoints for direct communication: + * <[1] flags> + * <[2] number of addresses> + * <[...] address types and addresses> + * + * Address types and addresses are of the same format as the destination + * address type and address in HELLO. + * + * The receiver may, upon receiving a CMA push, attempt to establish a + * direct link to one or more of the indicated addresses. Senders should + * only send CMA pushes to peers that they have some relationship + * with such as a shared network membership or a mutual trust. + * + * OK/ERROR are not generated. + */ + VERB_CMA = 16 }; /** |