mirror of
https://github.com/ChronosX88/FreePastry.git
synced 2024-12-04 23:32:18 +00:00
397 lines
11 KiB
C
397 lines
11 KiB
C
/* packet-scribe.c
|
|
* Routines for Scribe
|
|
* Copyright 2007, David Dugoujon <david.dugoujon@yahoo.fr>
|
|
*
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
|
|
#include <gmodule.h>
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/emem.h>
|
|
#include <epan/prefs.h>
|
|
|
|
#include "packet-scribe.h"
|
|
#include "packet-freepastry.h"
|
|
|
|
static int proto_scribe = -1;
|
|
|
|
static int hf_scribe_type = -1;
|
|
static int hf_scribe_version = -1;
|
|
static int hf_scribe_has_source = -1;
|
|
static int hf_scribe_has_content = -1;
|
|
static int hf_scribe_content_type = -1;
|
|
static int hf_scribe_content = -1;
|
|
static int hf_scribe_to_visit_len = -1;
|
|
static int hf_scribe_visited_len = -1;
|
|
static int hf_scribe_id = -1;
|
|
static int hf_scribe_has_previous_parent = -1;
|
|
static int hf_scribe_previous_parent_type = -1;
|
|
static int hf_scribe_previous_parent = -1;
|
|
static int hf_scribe_path_len = -1;
|
|
static int hf_scribe_path_type = -1;
|
|
static int hf_scribe_path = -1;
|
|
|
|
static gint ett_scribe = -1;
|
|
|
|
static dissector_handle_t scribe_handle;
|
|
|
|
static const value_string scribe_msg_type[] = {
|
|
{ SCRIBE_ANYCAST_MSG, "Anycast"},
|
|
{ SCRIBE_SUBSCRIBE_MSG, "Subscribe"},
|
|
{ SCRIBE_SUBSCRIBE_ACK_MSG, "Subscribe Ack"},
|
|
{ SCRIBE_SUBSCRIBE_FAILED_MSG, "Subscribe Failed"},
|
|
{ SCRIBE_DROP_MSG, "Drop"},
|
|
{ SCRIBE_PUBLISH_MSG, "Publish"},
|
|
{ SCRIBE_PUBLISH_REQUEST_MSG, "Publish Request"},
|
|
{ SCRIBE_UNSUBSCRIBE_MSG, "Unsubscribe"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
void
|
|
decode_content(tvbuff_t *tvb, proto_tree *tree, gint offset)
|
|
{
|
|
gint payload_len;
|
|
proto_tree_add_item(tree, hf_scribe_content_type, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
payload_len = tvb_reported_length_remaining(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, payload_len,
|
|
"Payload (%u byte%s)", payload_len,
|
|
plurality(payload_len, "", "s"));
|
|
}
|
|
|
|
gint
|
|
decode_visit(tvbuff_t *tvb, proto_tree *tree, gint offset)
|
|
{
|
|
guint32 to_visit_len;
|
|
guint32 visited_len;
|
|
guint32 i;
|
|
|
|
to_visit_len = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_scribe_to_visit_len, tvb, offset, 4, to_visit_len);
|
|
offset += 4;
|
|
for (i = 0; i < to_visit_len; ++i){
|
|
offset = decode_nodehandle(tvb, tree, offset, ep_strdup_printf("NodeHandle to visit #%d", i+1));
|
|
if (offset == -1){
|
|
return -1;
|
|
}
|
|
}/*end for each to_visit*/
|
|
|
|
visited_len = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_scribe_visited_len, tvb, offset, 4, visited_len);
|
|
offset += 4;
|
|
for (i = 0; i < visited_len; ++i){
|
|
offset = decode_nodehandle(tvb, tree, offset, ep_strdup_printf("Visited NodeHandle #%d", i+1));
|
|
if (offset == -1){
|
|
return -1;
|
|
}
|
|
}/*end for each visited*/
|
|
return offset;
|
|
}
|
|
|
|
void
|
|
decode_anycast(tvbuff_t *tvb, proto_tree *tree, gint offset)
|
|
{
|
|
if (tree){
|
|
gboolean has_content = FALSE;
|
|
|
|
/*visit*/
|
|
offset = decode_visit(tvb, tree, offset);
|
|
if (offset == -1){
|
|
return;
|
|
}
|
|
|
|
/*has content?*/
|
|
if (tvb_get_guint8(tvb, offset) != 0){
|
|
has_content = TRUE;
|
|
}
|
|
proto_tree_add_boolean(tree, hf_scribe_has_content, tvb, offset, 1, has_content);
|
|
offset++;
|
|
|
|
if (has_content){
|
|
decode_content(tvb, tree, offset);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
decode_subscribe(tvbuff_t *tvb, proto_tree *tree, gint offset)
|
|
{
|
|
if (tree){
|
|
gboolean has_content = FALSE;
|
|
gboolean has_previous_parent = FALSE;
|
|
|
|
/*visit*/
|
|
offset = decode_visit(tvb, tree, offset);
|
|
if (offset == -1){
|
|
return;
|
|
}
|
|
|
|
/*has content?*/
|
|
if (tvb_get_guint8(tvb, offset) != 0){
|
|
has_content = TRUE;
|
|
}
|
|
proto_tree_add_boolean(tree, hf_scribe_has_content, tvb, offset, 1, has_content);
|
|
offset++;
|
|
|
|
if (has_content){
|
|
decode_content(tvb, tree, offset);
|
|
} else {
|
|
proto_tree_add_item(tree, hf_scribe_id, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
/*has previous parent?*/
|
|
if (tvb_get_guint8(tvb, offset) != 0){
|
|
has_previous_parent = TRUE;
|
|
}
|
|
proto_tree_add_boolean(tree, hf_scribe_has_previous_parent, tvb, offset, 1, has_previous_parent);
|
|
offset++;
|
|
|
|
if (has_previous_parent){
|
|
proto_tree_add_item(tree, hf_scribe_previous_parent_type, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
proto_tree_add_string(tree, hf_scribe_previous_parent, tvb, offset, 20, get_id_full(tvb, offset));
|
|
offset +=20;
|
|
}
|
|
|
|
decode_nodehandle(tvb, tree, offset, "Subscriber");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
decode_scribe_subscribe_ack(tvbuff_t *tvb, proto_tree *tree, gint offset)
|
|
{
|
|
if (tree){
|
|
guint32 path_len;
|
|
guint32 i;
|
|
|
|
proto_tree_add_item(tree, hf_scribe_id, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
path_len = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_item(tree, hf_scribe_path_len, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < path_len; ++i){
|
|
if (tvb_reported_length_remaining(tvb, offset) < 20){
|
|
proto_tree_add_text(tree, tvb, offset, -1, "Malformed Scribe message!");
|
|
return;
|
|
}
|
|
proto_tree_add_item(tree, hf_scribe_path_type, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
proto_tree_add_string(tree, hf_scribe_path, tvb, offset, 20, get_id_full(tvb, offset));
|
|
offset += 20;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
decode_scribe_failed(tvbuff_t *tvb, proto_tree *tree, gint offset)
|
|
{
|
|
if (tree){
|
|
proto_tree_add_item(tree, hf_scribe_id, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_scribe(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti = NULL;
|
|
proto_tree *scribe_tree = NULL;
|
|
const gchar *type_string = NULL;
|
|
guint16 type;
|
|
gboolean has_source = FALSE;
|
|
gint offset = 0;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Scribe");
|
|
|
|
type = tvb_get_ntohs(tvb, offset);
|
|
type_string = val_to_str(type, scribe_msg_type, "<Unknown type %d>");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_clear (pinfo->cinfo, COL_INFO);
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%d > %d %s",
|
|
pinfo->srcport, pinfo->destport, type_string);
|
|
}
|
|
|
|
/*has source?*/
|
|
if (tvb_get_guint8(tvb, offset+3) != 0){
|
|
has_source = TRUE;
|
|
}
|
|
|
|
if (tree){
|
|
ti = proto_tree_add_item(tree, proto_scribe, tvb, 0, -1, FALSE);
|
|
scribe_tree = proto_item_add_subtree(ti, ett_scribe);
|
|
proto_tree_add_item(scribe_tree, hf_scribe_type, tvb, offset, 2, FALSE);
|
|
proto_tree_add_item(scribe_tree, hf_scribe_version, tvb, offset + 2, 1, FALSE);
|
|
proto_tree_add_boolean(scribe_tree, hf_scribe_has_source, tvb, offset + 3, 1, has_source);
|
|
if (has_source){
|
|
offset = decode_nodehandle(tvb, scribe_tree, offset + 4 , "Source");
|
|
}
|
|
} else {
|
|
if (has_source){
|
|
offset = get_node_handle_len(tvb, offset + 3);
|
|
}
|
|
}
|
|
if (offset == -1){
|
|
return;
|
|
}
|
|
|
|
if(check_col(pinfo->cinfo,COL_INFO)){
|
|
print_id_into_col_info(tvb, pinfo, offset, "Topic");
|
|
}
|
|
|
|
if (tree){
|
|
offset = decode_type_and_id(tvb, scribe_tree, offset);
|
|
if (offset == -1){
|
|
return;
|
|
}
|
|
|
|
switch (type){
|
|
case SCRIBE_ANYCAST_MSG:
|
|
decode_anycast(tvb, scribe_tree, offset);
|
|
break;
|
|
case SCRIBE_SUBSCRIBE_MSG:
|
|
decode_subscribe(tvb, scribe_tree, offset);
|
|
break;
|
|
case SCRIBE_SUBSCRIBE_ACK_MSG:
|
|
decode_scribe_subscribe_ack(tvb, scribe_tree, offset);
|
|
break;
|
|
case SCRIBE_SUBSCRIBE_FAILED_MSG:
|
|
decode_scribe_failed(tvb, scribe_tree, offset);
|
|
break;
|
|
case SCRIBE_PUBLISH_MSG:
|
|
case SCRIBE_PUBLISH_REQUEST_MSG:
|
|
decode_content(tvb, scribe_tree, offset);
|
|
break;
|
|
case SCRIBE_DROP_MSG:
|
|
case SCRIBE_UNSUBSCRIBE_MSG:
|
|
default:
|
|
return;/*stop dissection*/
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_scribe(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_scribe_type,
|
|
{ "Type", "scribe.type",
|
|
FT_UINT16, BASE_DEC, VALS(scribe_msg_type), 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_version,
|
|
{ "Version", "scribe.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_has_source,
|
|
{ "Has source", "scribe.has_source",
|
|
FT_BOOLEAN, 8, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_has_content,
|
|
{ "Has content", "scribe.has_content",
|
|
FT_BOOLEAN, 8, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_content_type,
|
|
{ "Content type", "scribe.content.type",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_content,
|
|
{ "Payload", "scribe.content.value",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_to_visit_len,
|
|
{ "Number of nodes to visit", "scribe.tovisit.len",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_visited_len,
|
|
{ "Number of visited nodes", "scribe.visited.len",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_id,
|
|
{ "Request ID", "scribe.id",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_has_previous_parent,
|
|
{ "Has previous parent", "scribe.has_previous_parent",
|
|
FT_BOOLEAN, 8, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_previous_parent_type,
|
|
{ "Path type", "scribe.previous_parent.type",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_previous_parent,
|
|
{ "Previous parent", "scribe.previous_parent.value",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_path_len,
|
|
{ "Lengh of path", "scribe.length_of_path",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_path_type,
|
|
{ "Path type", "scribe.path.type",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_scribe_path,
|
|
{ "Path", "scribe.path.value",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_scribe
|
|
};
|
|
|
|
module_t *scribe_module;
|
|
|
|
if (proto_scribe == -1) {
|
|
proto_scribe = proto_register_protocol (
|
|
"Scribe (Common API Application)", /* name */
|
|
"Scribe", /* short name */
|
|
"scribe" /* abbrev */
|
|
);
|
|
}
|
|
scribe_module = prefs_register_protocol(proto_scribe, NULL);
|
|
proto_register_field_array(proto_scribe, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_scribe(void)
|
|
{
|
|
static int Initialized=FALSE;
|
|
if (!Initialized) {
|
|
scribe_handle = create_dissector_handle(dissect_scribe, proto_scribe);
|
|
dissector_add("commonapi.app", SCRIBE_SUB_ADDRESS, scribe_handle);
|
|
}
|
|
}
|