1. A C-style Protocol Buffers Language (PBL) parser for *.proto file is added.
It contains protobuf_lang_scanner.l (lex scanner), epan/protobuf_lang.y (grammar
parser), and protobuf_lang_tree.h/c (grammar tree implementation).
2. The protobuf-helper.h/cpp is an interface wrapper layer. If one day C++ is allowed,
we can create a protobuf-helper.cpp file, which using offical protobuf C++
library, to replace protobuf-helper.c. That keeps packet-protobuf.c unchanged.
3. User can specify protobuf search paths, and the UDP ports to protobuf message type
maps at the Protobuf protocol preferences.
4. Other dissectors can pass the message type to Protobuf dissector by data parameter
or pinfo->private_table["pb_msg_type"] (pinfo.private["pb_msg_type"] in lua).
Some Sample of GRPC with Protobuf captures can be found in Bug: 13932.
Bug: 13932
Change-Id: Ife16c2f7b381296f8db4740dabe5f8362a456f48
Reviewed-on: https://code.wireshark.org/review/22892
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Huang Qiangxiong