Allow either old-style (pre-tvbuff) or new-style (tvbuffified)

dissectors to be registered as dissectors for particular ports,
registered as heuristic dissectors, and registered as dissectors for
conversations, and have routines to be used both by old-style and
new-style dissectors to call registered dissectors.

Have the code that calls those dissectors translate the arguments as
necessary.  (For conversation dissectors, replace
"find_conversation_dissector()", which just returns a pointer to the
dissector, with "old_try_conversation_dissector()" and
"try_conversation_dissector()", which actually call the dissector, so
that there's a single place at which we can do that translation.  Also
make "dissector_lookup()" static and, instead of calling it and, if it
returns a non-null pointer, calling that dissector, just use
"old_dissector_try_port()" or "dissector_try_port()", for the same
reason.)

This allows some dissectors that took old-style arguments and
immediately translated them to new-style arguments to just take
new-style arguments; make them do so.  It also allows some new-style
dissectors not to have to translate arguments before calling routines to
look up and call dissectors; make them not do so.

Get rid of checks for too-short frames in new-style dissectors - the
tvbuff code does those checks for you.

Give the routines to register old-style dissectors, and to call
dissectors from old-style dissectors, names beginning with "old_", with
the routines for new-style dissectors not having the "old_".  Update the
dissectors that use those routines appropriately.

Rename "dissect_data()" to "old_dissect_data()", and
"dissect_data_tvb()" to "dissect_data()".

svn path=/trunk/; revision=2218

1 files changed, 4 insertions, 4 deletions

diff --git a/packet-aarp.c b/packet-aarp.c
index a4c0c43811..dcb2736c6a 100644
--- a/packet-aarp.c
+++ b/packet-aarp.c
@@ -1,7 +1,7 @@
 /* packet-aarp.c
  * Routines for Appletalk ARP packet disassembly
  *
- * $Id: packet-aarp.c,v 1.20 2000/05/31 05:06:48 guy Exp $
+ * $Id: packet-aarp.c,v 1.21 2000/08/07 03:20:20 guy Exp $
  *
  * Simon Wilkinson <sxw@dcs.ed.ac.uk>
  *
@@ -140,7 +140,7 @@ dissect_aarp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
   gchar       *sha_str, *spa_str, *tha_str, *tpa_str;
 
   if (!BYTES_ARE_IN_FRAME(offset, MIN_AARP_HEADER_SIZE)) {
-    dissect_data(pd, offset, fd, tree);
+    old_dissect_data(pd, offset, fd, tree);
     return;
   }
 
@@ -152,7 +152,7 @@ dissect_aarp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
 
   if (!BYTES_ARE_IN_FRAME(offset, 
 			  MIN_AARP_HEADER_SIZE + ar_hln*2 + ar_pln*2)) {
-    dissect_data(pd, offset, fd, tree);
+    old_dissect_data(pd, offset, fd, tree);
     return;
   }
   
@@ -287,5 +287,5 @@ proto_register_aarp(void)
 void
 proto_reg_handoff_aarp(void)
 {
-	dissector_add("ethertype", ETHERTYPE_AARP, dissect_aarp);
+	old_dissector_add("ethertype", ETHERTYPE_AARP, dissect_aarp);
 }