r6184: the beginnings of the libcli/dgram/ library, and the dgram

server. Currently just listens on port 138 and parses the packets
(using IDL like the rest of NBT). This allows me to develop the
structures and test with real packets
(This used to be commit 10d64a525349ff96695ad961a3cfeb5bc7c8844f)

1 files changed, 62 insertions, 0 deletions

diff --git a/source4/librpc/idl/nbt.idl b/source4/librpc/idl/nbt.idl
index 04fe0c4f90..4d12dd02d0 100644
--- a/source4/librpc/idl/nbt.idl
+++ b/source4/librpc/idl/nbt.idl
@@ -183,4 +183,66 @@ interface nbt
 		nbt_res_rec       additional[arcount];
 		[flag(NDR_REMAINING)] DATA_BLOB padding;
 	} nbt_name_packet;
+
+
+	/*
+	  NBT DGRAM packets (UDP/138)
+	*/
+
+	typedef [enum8bit] enum {
+		DGRAM_DIRECT_UNIQUE  = 0x10,
+		DGRAM_DIRECT_GROUP   = 0x11,
+		DGRAM_BCAST          = 0x12,
+		DGRAM_ERROR          = 0x13,
+		DGRAM_QUERY          = 0x14,
+		DGRAM_QUERY_POSITIVE = 0x15,
+		DGRAM_QUERY_NEGATIVE = 0x16
+	} dgram_msg_type;
+
+	typedef [bitmap8bit] bitmap {
+		DGRAM_FLAG_MORE         = 0x80,
+		DGRAM_FLAG_FIRST        = 0x40,
+		DGRAM_FLAG_NODE_TYPE    = 0x30
+	} dgram_flags;
+
+	typedef [enum8bit] enum {
+		DGRAM_NODE_B    = 0x00,
+		DGRAM_NODE_P    = 0x10,
+		DGRAM_NODE_M    = 0x20,
+		DGRAM_NODE_NBDD = 0x30
+	} dgram_node_type;
+
+	/* a dgram_message is the main dgram body in general use */
+	typedef struct {
+		uint16         length;
+		uint16         offset;
+		nbt_name       source_name;
+		nbt_name       dest_name;
+		[flag(NDR_REMAINING)] DATA_BLOB data;
+	} dgram_message;
+
+	typedef [enum8bit] enum {
+		DGRAM_ERROR_NAME_NOT_PRESENT = 0x82,
+		DGRAM_ERROR_INVALID_SOURCE   = 0x83,
+		DGRAM_ERROR_INVALID_DEST     = 0x84
+	} dgram_err_code;
+
+	typedef [nodiscriminant] union {
+		[case(DGRAM_DIRECT_UNIQUE)]   dgram_message msg;
+		[case(DGRAM_DIRECT_GROUP)]    dgram_message msg;
+		[case(DGRAM_BCAST)]           dgram_message msg;
+		[case(DGRAM_ERROR)]           dgram_err_code error;
+		[case(DGRAM_QUERY)]           nbt_name       dest_name;
+		[case(DGRAM_QUERY_POSITIVE)]  nbt_name       dest_name;
+		[case(DGRAM_QUERY_NEGATIVE)]  nbt_name       dest_name;
+	} dgram_data;
+
+	typedef [flag(NDR_NOALIGN|NDR_BIG_ENDIAN|NDR_PAHEX),public] struct {
+		dgram_msg_type msg_type;
+		dgram_flags    flags;
+		uint16         dgram_id;
+		ipv4address    source;
+		uint16         src_port;
+		[switch_is(msg_type)] dgram_data data;
+	} nbt_dgram_packet;
 }