Add Lua heuristic dissector support

This adds the ability for Lua scripts to register heuristic dissectors
for any protocol that has registered a heuristic dissector list, such
as UDP, TCP, and ~50 others. The Lua function can also establish a
conversation tied to its Proto dissector, to avoid having to check the
heuristics for the same flow. The example dissector in the testsuite
has also been enhanced to include a heuristic dissector, to verify
the functionality and provide an example implementation.

Change-Id: Ie232602779f43d3418fe8db09c61d5fc0b59597a
Reviewed-on: https://code.wireshark.org/review/576
Reviewed-by: Anders Broman <a.broman58@gmail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/epan/wslua/wslua_tvb.c b/epan/wslua/wslua_tvb.c
index c4746bc97f..1dae9c3461 100644
--- a/epan/wslua/wslua_tvb.c
+++ b/epan/wslua/wslua_tvb.c
@@ -495,7 +495,7 @@ static int Tvb__gc(lua_State* L) {
 }
 
 WSLUA_METHOD Tvb_reported_len(lua_State* L) {
-	/* Obtain the reported length of a TVB */
+	/* Obtain the reported (not captured) length of a TVB */
     Tvb tvb = checkTvb(L,1);
 
     lua_pushnumber(L,tvb_reported_length(tvb->ws_tvb));
@@ -503,7 +503,7 @@ WSLUA_METHOD Tvb_reported_len(lua_State* L) {
 }
 
 WSLUA_METHOD Tvb_len(lua_State* L) {
-	/* Obtain the length of a TVB */
+	/* Obtain the actual (captured) length of a TVB */
     Tvb tvb = checkTvb(L,1);
 
     lua_pushnumber(L,tvb_length(tvb->ws_tvb));
@@ -511,7 +511,7 @@ WSLUA_METHOD Tvb_len(lua_State* L) {
 }
 
 WSLUA_METHOD Tvb_reported_length_remaining(lua_State* L) {
-	/* Obtain the reported length of packet data to end of a TVB or -1 if the offset is beyond the end of the TVB */
+	/* Obtain the reported (not captured) length of packet data to end of a TVB or -1 if the offset is beyond the end of the TVB */
 #define Tvb_reported_length_remaining_OFFSET 2 /* offset */
     Tvb tvb = checkTvb(L,1);
     int offset = luaL_optint(L, Tvb_reported_length_remaining_OFFSET, 0);