Change "conversation_set_dissector()" to take a dissector handle, rather

than a pointer to a dissector function, as an argument.

This means that the conversation dissector is called through
"call_dissector()", so the dissector itself doesn't have to worry about
checking whether the protocol is enabled or setting
"pinfo->current_proto", so get rid of the code that does that in
conversation dissectors.  Also, make the conversation dissectors static.

Get rid of some direct calls to dissectors; replace them with calls
through handles, and, again, get rid of code to check whether a protocol
is enabled and set "pinfo->current_proto" where that code isn't needed.
Make those dissectors static if they aren't already static.

Add a routine "create_dissector_handle()" to create a dissector handle
without registering it by name, if the dissector isn't used outside the
module in which it's defined.

svn path=/trunk/; revision=4281

4 files changed, 32 insertions, 12 deletions

diff --git a/epan/conversation.c b/epan/conversation.c
index 036a94ddc2..527119fe65 100644
--- a/epan/conversation.c
+++ b/epan/conversation.c
@@ -1,7 +1,7 @@
 /* conversation.c
  * Routines for building lists of packets that are part of a "conversation"
  *
- * $Id: conversation.c,v 1.15 2001/11/21 01:00:37 guy Exp $
+ * $Id: conversation.c,v 1.16 2001/11/27 07:13:31 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@ethereal.com>
@@ -462,8 +462,8 @@ conversation_new(address *addr1, address *addr2, port_type ptype,
 	conversation->index = new_index;
 	conversation->data_list = NULL;
 
-/* clear dissector pointer */
-	conversation->dissector = NULL;
+/* clear dissector handle */
+	conversation->dissector_handle = NULL;
 
 /* set the options and key pointer */
 	conversation->options = options;
@@ -902,9 +902,9 @@ conversation_delete_proto_data(conversation_t *conv, int proto)
 
 void
 conversation_set_dissector(conversation_t *conversation,
-    dissector_t dissector)
+    dissector_handle_t handle)
 {
-	conversation->dissector = dissector;
+	conversation->dissector_handle = handle;
 }
 
 /*
@@ -923,9 +923,10 @@ try_conversation_dissector(address *addr_a, address *addr_b, port_type ptype,
 	    port_b, 0);
 	
 	if (conversation != NULL) {
-		if (conversation->dissector == NULL)
+		if (conversation->dissector_handle == NULL)
 			return FALSE;
-		(*conversation->dissector)(tvb, pinfo, tree);
+		call_dissector(conversation->dissector_handle, tvb, pinfo,
+		    tree);
 		return TRUE;
 	}
 	return FALSE;
diff --git a/epan/conversation.h b/epan/conversation.h
index bf4c6fb13f..517af05e8f 100644
--- a/epan/conversation.h
+++ b/epan/conversation.h
@@ -1,7 +1,7 @@
 /* conversation.h
  * Routines for building lists of packets that are part of a "conversation"
  *
- * $Id: conversation.h,v 1.8 2001/11/04 03:55:52 guy Exp $
+ * $Id: conversation.h,v 1.9 2001/11/27 07:13:32 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@ethereal.com>
@@ -57,7 +57,8 @@ typedef struct conversation {
 	struct conversation *next;	/* pointer to next conversation on hash chain */
 	guint32	index;			/* unique ID for conversation */
 	GSList *data_list;		/* list of data associated with conversation */
-	dissector_t dissector;		/* protocol dissector client can associate with conversation */
+	dissector_handle_t dissector_handle;
+					/* handle for protocol dissector client associated with conversation */
 	guint	options;		/* wildcard flags */
 	conversation_key *key_ptr;	/* pointer to the key for this conversation */
 } conversation_t;
@@ -76,7 +77,7 @@ extern void *conversation_get_proto_data(conversation_t *conv, int proto);
 extern void conversation_delete_proto_data(conversation_t *conv, int proto);
 
 extern void conversation_set_dissector(conversation_t *conversation,
-    dissector_t dissector);
+    dissector_handle_t handle);
 extern gboolean
 try_conversation_dissector(address *addr_a, address *addr_b, port_type ptype,
     guint32 port_a, guint32 port_b, tvbuff_t *tvb, packet_info *pinfo,
diff --git a/epan/packet.c b/epan/packet.c
index a1701bb38e..ad0e9a69c1 100644
--- a/epan/packet.c
+++ b/epan/packet.c
@@ -1,7 +1,7 @@
 /* packet.c
  * Routines for packet disassembly
  *
- * $Id: packet.c,v 1.42 2001/11/26 05:41:12 hagbard Exp $
+ * $Id: packet.c,v 1.43 2001/11/27 07:13:32 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@ethereal.com>
@@ -790,6 +790,20 @@ find_dissector(const char *name)
 	return g_hash_table_lookup(registered_dissectors, name);
 }
 
+/* Create an anonymous handle for a dissector. */
+dissector_handle_t
+create_dissector_handle(dissector_t dissector, int proto)
+{
+	struct dissector_handle *handle;
+
+	handle = g_malloc(sizeof (struct dissector_handle));
+	handle->name = NULL;
+	handle->dissector = dissector;
+	handle->proto_index = proto;
+
+	return handle;
+}
+
 /* Register a dissector by name. */
 void
 register_dissector(const char *name, dissector_t dissector, int proto)
diff --git a/epan/packet.h b/epan/packet.h
index c9cfc5bca6..6af0d154af 100644
--- a/epan/packet.h
+++ b/epan/packet.h
@@ -1,7 +1,7 @@
 /* packet.h
  * Definitions for packet disassembly structures and routines
  *
- * $Id: packet.h,v 1.41 2001/11/26 05:41:13 hagbard Exp $
+ * $Id: packet.h,v 1.42 2001/11/27 07:13:32 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@ethereal.com>
@@ -194,6 +194,10 @@ extern void register_dissector(const char *name, dissector_t dissector,
 /* Find a dissector by name. */
 extern dissector_handle_t find_dissector(const char *name);
 
+/* Create an anonymous handle for a dissector. */
+extern dissector_handle_t create_dissector_handle(dissector_t dissector,
+    int proto);
+
 /* Call a dissector through a handle. */
 extern void call_dissector(dissector_handle_t handle, tvbuff_t *tvb,
     packet_info *pinfo, proto_tree *tree);