forked from osmocom/wireshark
![Dario Lombardo](/assets/img/avatar_default.png)
Change-Id: I92c94448e6641716d03158a5f332c8b53709423a Reviewed-on: https://code.wireshark.org/review/25756 Petri-Dish: Dario Lombardo <lomato@gmail.com> Reviewed-by: Anders Broman <a.broman58@gmail.com>
647 lines
22 KiB
C
647 lines
22 KiB
C
/* Do not modify this file. Changes will be overwritten */
|
|
/* Generated Automatically */
|
|
/* packet-skinny.c */
|
|
|
|
/* packet-skinny.c
|
|
* Dissector for the Skinny Client Control Protocol
|
|
* (The "D-Channel"-Protocol for Cisco Systems' IP-Phones)
|
|
*
|
|
* Author: Diederik de Groot <ddegroot@user.sf.net>, Copyright 2014
|
|
* Rewritten to support newer skinny protocolversions (V0-V22)
|
|
* Based on previous versions/contributions:
|
|
* - Joerg Mayer <jmayer@loplof.de>, Copyright 2001
|
|
* - Paul E. Erkkila (pee@erkkila.org) - fleshed out the decode
|
|
* skeleton to report values for most message/message fields.
|
|
* Much help from Guy Harris on figuring out the wireshark api.
|
|
* - packet-aim.c by Ralf Hoelzer <ralf@well.com>, Copyright 2000
|
|
* - Wireshark - Network traffic analyzer,
|
|
* By Gerald Combs <gerald@wireshark.org>, Copyright 1998
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
/* [[[cog
|
|
#
|
|
# Using Cog.py Inplace Code Generator
|
|
#
|
|
# Dependencies:
|
|
# - python2.x
|
|
# - cog.py: (pip install cogapp / http://nedbatchelder.com/code/cog/)
|
|
# - python.xml
|
|
# - python.xml.sax
|
|
#
|
|
cog.out('/*\n')
|
|
cog.out(' * Generated Automatically Using (from wireshark base directory):\n')
|
|
cog.out(' * cog.py -D xmlfile=tools/SkinnyProtocolOptimized.xml -d -c -o epan/dissectors/packet-skinny.c epan/dissectors/packet-skinny.c.in\n')
|
|
cog.out(' */\n')
|
|
/*]]]*/
|
|
/*[[[end]]]*/
|
|
|
|
/* c-basic-offset: 2; tab-width: 8; indent-tabs-mode: nil
|
|
* vi: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|
|
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/prefs.h>
|
|
#include <epan/conversation.h>
|
|
#include <epan/wmem/wmem.h>
|
|
#include <epan/to_str.h>
|
|
#include <epan/reassemble.h>
|
|
#include <epan/tap.h>
|
|
#include <epan/ptvcursor.h>
|
|
|
|
#include "packet-rtp.h"
|
|
#include "packet-tcp.h"
|
|
#include "packet-ssl.h"
|
|
#include "packet-skinny.h"
|
|
|
|
/* un-comment the following as well as this line in conversation.c, to enable debug printing */
|
|
/* #define DEBUG_CONVERSATION */
|
|
#include "conversation_debug.h"
|
|
|
|
void proto_register_skinny(void);
|
|
void proto_reg_handoff_skinny(void);
|
|
|
|
#define TCP_PORT_SKINNY 2000 /* Not IANA registered */
|
|
#define SSL_PORT_SKINNY 2443 /* IANA assigned to PowerClient Central Storage Facility */
|
|
|
|
#define BASIC_MSG_TYPE 0x00
|
|
#define V10_MSG_TYPE 0x0A
|
|
#define V11_MSG_TYPE 0x0B
|
|
#define V15_MSG_TYPE 0x0F
|
|
#define V16_MSG_TYPE 0x10
|
|
#define V17_MSG_TYPE 0x11
|
|
#define V18_MSG_TYPE 0x12
|
|
#define V19_MSG_TYPE 0x13
|
|
#define V20_MSG_TYPE 0x14
|
|
#define V21_MSG_TYPE 0x15
|
|
#define V22_MSG_TYPE 0x16
|
|
|
|
static const value_string header_version[] = {
|
|
{ BASIC_MSG_TYPE, "Basic" },
|
|
{ V10_MSG_TYPE, "V10" },
|
|
{ V11_MSG_TYPE, "V11" },
|
|
{ V15_MSG_TYPE, "V15" },
|
|
{ V16_MSG_TYPE, "V16" },
|
|
{ V17_MSG_TYPE, "V17" },
|
|
{ V18_MSG_TYPE, "V18" },
|
|
{ V19_MSG_TYPE, "V19" },
|
|
{ V20_MSG_TYPE, "V20" },
|
|
{ V21_MSG_TYPE, "V21" },
|
|
{ V22_MSG_TYPE, "V22" },
|
|
{ 0 , NULL }
|
|
};
|
|
|
|
/* Declare MessageId */
|
|
/* [[[cog
|
|
import sys
|
|
sys.path.append('tools/')
|
|
|
|
import parse_xml2skinny_dissector as xml2skinny
|
|
global skinny
|
|
global message_dissector_functions
|
|
|
|
message_dissector_functions = ''
|
|
skinny = xml2skinny.xml2obj(xmlfile)
|
|
|
|
cog.out('static const value_string message_id[] = {\n')
|
|
for message in skinny.message:
|
|
message_dissector_functions += '%s' %message.dissect()
|
|
cog.out(' { %s, "%s" },\n' %(message.opcode, message.name.replace('Message','')))
|
|
cog.out(' {0 , NULL}\n')
|
|
cog.out('};\n')
|
|
cog.out('static value_string_ext message_id_ext = VALUE_STRING_EXT_INIT(message_id);\n')
|
|
/*]]]*/
|
|
/*[[[end]]]*/
|
|
|
|
/* Declare Enums and Defines */
|
|
/* [[[cog
|
|
for enum in skinny.enum:
|
|
name = enum.name[0].upper() + enum.name[1:]
|
|
if enum.define == "yes":
|
|
for entries in enum.entries:
|
|
for entry in sorted(entries.entry, key=lambda x: int(x['value'],0)):
|
|
if entries.type is not None:
|
|
cog.out('#define {0:38} 0x{1:05x} /* {2} */\n' .format(entry.name.upper(), int(entry.value,0), entries.type))
|
|
else:
|
|
cog.out('#define {0:38} 0x{1:05x}\n' .format(entry.name.upper(), int(entry.value,0)))
|
|
cog.out('\n')
|
|
cog.out('static const value_string %s[] = {\n' %(name))
|
|
for entries in enum.entries:
|
|
for entry in sorted(entries.entry, key=lambda x: int(x['value'],0)):
|
|
if enum.define == "yes":
|
|
cog.out(' { %s, "%s" },\n' %(entry.name.upper(), entry.text))
|
|
else:
|
|
cog.out(' { 0x%05x, "%s" },\n' %(int(entry.value,0), entry.text))
|
|
cog.out(' { 0x00000, NULL }\n')
|
|
cog.out('};\n')
|
|
cog.out('static value_string_ext %s_ext = VALUE_STRING_EXT_INIT(%s);\n\n' %(name, name))
|
|
/*]]]*/
|
|
/*[[[end]]]*/
|
|
|
|
/* Staticly Declared Variables */
|
|
static int proto_skinny = -1;
|
|
static int hf_skinny_messageId = -1;
|
|
static int hf_skinny_data_length = -1;
|
|
static int hf_skinny_hdr_version = -1;
|
|
static int hf_skinny_xmlData = -1;
|
|
static int hf_skinny_ipv4or6 = -1;
|
|
static int hf_skinny_response_in = -1;
|
|
static int hf_skinny_response_to = -1;
|
|
static int hf_skinny_response_time = -1;
|
|
|
|
/* [[[cog
|
|
for key in sorted(xml2skinny.fieldsArray.keys()):
|
|
cog.out('static int hf_skinny_%s = -1;\n' %key)
|
|
]]]*/
|
|
/*[[[end]]]*/
|
|
|
|
static dissector_handle_t xml_handle;
|
|
|
|
/* Initialize the subtree pointers */
|
|
static gint ett_skinny = -1;
|
|
static gint ett_skinny_tree = -1;
|
|
|
|
/* preference globals */
|
|
static gboolean global_skinny_desegment = TRUE;
|
|
|
|
/* tap register id */
|
|
static int skinny_tap = -1;
|
|
|
|
/* skinny protocol tap info */
|
|
#define MAX_SKINNY_MESSAGES_IN_PACKET 10
|
|
static skinny_info_t pi_arr[MAX_SKINNY_MESSAGES_IN_PACKET];
|
|
static int pi_current = 0;
|
|
static skinny_info_t *si;
|
|
|
|
dissector_handle_t skinny_handle;
|
|
|
|
/* Get the length of a single SKINNY PDU */
|
|
static guint
|
|
get_skinny_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
|
|
{
|
|
guint32 hdr_data_length;
|
|
|
|
/* Get the length of the SKINNY packet. */
|
|
hdr_data_length = tvb_get_letohl(tvb, offset);
|
|
|
|
/* That length doesn't include the length of the header itself. */
|
|
return hdr_data_length + 8;
|
|
}
|
|
|
|
static void
|
|
dissect_skinny_xml(ptvcursor_t *cursor, int hfindex, packet_info *pinfo, guint32 length, guint32 maxlength)
|
|
{
|
|
proto_item *item = NULL;
|
|
proto_tree *subtree = NULL;
|
|
proto_tree *tree = ptvcursor_tree(cursor);
|
|
guint32 offset = ptvcursor_current_offset(cursor);
|
|
tvbuff_t *tvb = ptvcursor_tvbuff(cursor);
|
|
tvbuff_t *next_tvb;
|
|
|
|
if (length == 0) {
|
|
length = tvb_strnlen(tvb, offset, -1);
|
|
}
|
|
if (length >= maxlength) {
|
|
length = maxlength;
|
|
}
|
|
|
|
ptvcursor_add_no_advance(cursor, hfindex, length, ENC_ASCII|ENC_NA);
|
|
|
|
item = proto_tree_add_item(tree, hf_skinny_xmlData, tvb, offset, length, ENC_ASCII|ENC_NA);
|
|
subtree = proto_item_add_subtree(item, 0);
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset, length, -1);
|
|
if (xml_handle != NULL) {
|
|
call_dissector(xml_handle, next_tvb, pinfo, subtree);
|
|
}
|
|
ptvcursor_advance(cursor, maxlength);
|
|
}
|
|
|
|
static void
|
|
dissect_skinny_ipv4or6(ptvcursor_t *cursor, int hfindex_ipv4, int hfindex_ipv6)
|
|
{
|
|
guint32 ipversion = 0;
|
|
guint32 offset = ptvcursor_current_offset(cursor);
|
|
tvbuff_t *tvb = ptvcursor_tvbuff(cursor);
|
|
guint32 hdr_version = tvb_get_letohl(tvb, 4);
|
|
|
|
/* ProtocolVersion > 18 include and extra field to declare IPv4 (0) / IPv6 (1) */
|
|
if (hdr_version >= V17_MSG_TYPE) {
|
|
ipversion = tvb_get_letohl(tvb, offset);
|
|
ptvcursor_add(cursor, hf_skinny_ipv4or6, 4, ENC_LITTLE_ENDIAN);
|
|
}
|
|
if (ipversion == IPADDRTYPE_IPV4) {
|
|
ptvcursor_add(cursor, hfindex_ipv4, 4, ENC_BIG_ENDIAN);
|
|
if (hdr_version >= V17_MSG_TYPE) {
|
|
/* skip over the extra room for ipv6 addresses */
|
|
ptvcursor_advance(cursor, 12);
|
|
}
|
|
} else if (ipversion == IPADDRTYPE_IPV6 || ipversion == IPADDRTYPE_IPV4_V6) {
|
|
ptvcursor_add(cursor, hfindex_ipv6, 16, ENC_NA);
|
|
} else {
|
|
/* Invalid : skip over ipv6 space completely */
|
|
ptvcursor_advance(cursor, 16);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse a displayLabel string and check if it is using any embedded labels, if so lookup the label and add a user readable translation to the item_tree
|
|
*/
|
|
static void
|
|
dissect_skinny_displayLabel(ptvcursor_t *cursor, int hfindex, gint length)
|
|
{
|
|
proto_item *item = NULL;
|
|
proto_tree *tree = ptvcursor_tree(cursor);
|
|
guint32 offset = ptvcursor_current_offset(cursor);
|
|
tvbuff_t *tvb = ptvcursor_tvbuff(cursor);
|
|
wmem_strbuf_t *wmem_new = NULL;
|
|
gchar *disp_string = NULL;
|
|
const gchar *replacestr = NULL;
|
|
gboolean show_replaced_str = FALSE;
|
|
gint x = 0;
|
|
|
|
if (length == 0) {
|
|
length = tvb_strnlen(tvb, offset, -1);
|
|
if (length == -1) {
|
|
/* did not find end of string */
|
|
length = tvb_captured_length_remaining(tvb, offset);
|
|
}
|
|
}
|
|
|
|
item = proto_tree_add_item(tree, hfindex, tvb, offset, length, ENC_ASCII | ENC_NA);
|
|
|
|
wmem_new = wmem_strbuf_sized_new(wmem_packet_scope(), length + 1, 0);
|
|
disp_string = (gchar*) wmem_alloc(wmem_packet_scope(), length + 1);
|
|
disp_string[length] = '\0';
|
|
tvb_memcpy(tvb, (void*)disp_string, offset, length);
|
|
|
|
for (x = 0; x < length && disp_string[x] != '\0'; x++) {
|
|
replacestr = NULL;
|
|
if (x + 1 < length) {
|
|
if (disp_string[x] == '\36') {
|
|
replacestr = try_val_to_str_ext(disp_string[x + 1], &DisplayLabels_36_ext);
|
|
} else if (disp_string[x] == '\200') {
|
|
replacestr = try_val_to_str_ext(disp_string[x + 1], &DisplayLabels_200_ext);
|
|
}
|
|
}
|
|
if (replacestr) {
|
|
x++; /* swallow replaced characters */
|
|
wmem_strbuf_append(wmem_new, replacestr);
|
|
show_replaced_str = TRUE;
|
|
} else {
|
|
wmem_strbuf_append_c(wmem_new, disp_string[x]);
|
|
}
|
|
}
|
|
if (show_replaced_str) {
|
|
proto_item_append_text(item, " => \"%s\"" , wmem_strbuf_get_str(wmem_new));
|
|
}
|
|
ptvcursor_advance(cursor, length);
|
|
}
|
|
|
|
/*** Request / Response helper functions */
|
|
static void skinny_reqrep_add_request(ptvcursor_t *cursor, packet_info * pinfo, skinny_conv_info_t * skinny_conv, const int request_key)
|
|
{
|
|
proto_tree *tree = ptvcursor_tree(cursor);
|
|
tvbuff_t *tvb = ptvcursor_tvbuff(cursor);
|
|
skinny_req_resp_t *req_resp = NULL;
|
|
|
|
if (!PINFO_FD_VISITED(pinfo)) {
|
|
req_resp = wmem_new0(wmem_file_scope(), skinny_req_resp_t);
|
|
req_resp->request_frame = pinfo->num;
|
|
req_resp->response_frame = 0;
|
|
req_resp->request_time = pinfo->fd->abs_ts;
|
|
wmem_map_insert(skinny_conv->pending_req_resp, GINT_TO_POINTER(request_key), (void *)req_resp);
|
|
DPRINT(("SKINNY: setup_request: frame=%d add key=%d to map\n", pinfo->num, request_key));
|
|
}
|
|
|
|
req_resp = (skinny_req_resp_t *) wmem_map_lookup(skinny_conv->requests, GUINT_TO_POINTER(pinfo->num));
|
|
if (req_resp && req_resp->response_frame) {
|
|
DPRINT(("SKINNY: show request in tree: frame/key=%d\n", pinfo->num));
|
|
proto_item *it;
|
|
it = proto_tree_add_uint(tree, hf_skinny_response_in, tvb, 0, 0, req_resp->response_frame);
|
|
PROTO_ITEM_SET_GENERATED(it);
|
|
} else {
|
|
DPRINT(("SKINNY: no request found for frame/key=%d\n", pinfo->num));
|
|
}
|
|
}
|
|
|
|
|
|
static void skinny_reqrep_add_response(ptvcursor_t *cursor, packet_info * pinfo, skinny_conv_info_t * skinny_conv, const int request_key)
|
|
{
|
|
proto_tree *tree = ptvcursor_tree(cursor);
|
|
tvbuff_t *tvb = ptvcursor_tvbuff(cursor);
|
|
skinny_req_resp_t *req_resp = NULL;
|
|
|
|
if (!PINFO_FD_VISITED(pinfo)) {
|
|
req_resp = (skinny_req_resp_t *) wmem_map_remove(skinny_conv->pending_req_resp, GINT_TO_POINTER(request_key));
|
|
if (req_resp) {
|
|
DPRINT(("SKINNY: match request:%d with response:%d for key=%d\n", req_resp->request_frame, pinfo->num, request_key));
|
|
req_resp->response_frame = pinfo->num;
|
|
wmem_map_insert(skinny_conv->requests, GUINT_TO_POINTER(req_resp->request_frame), (void *)req_resp);
|
|
wmem_map_insert(skinny_conv->responses, GUINT_TO_POINTER(pinfo->num), (void *)req_resp);
|
|
} else {
|
|
DPRINT(("SKINNY: no match found for response frame=%d and key=%d\n", pinfo->num, request_key));
|
|
}
|
|
}
|
|
|
|
req_resp = (skinny_req_resp_t *) wmem_map_lookup(skinny_conv->responses, GUINT_TO_POINTER(pinfo->num));
|
|
if (req_resp && req_resp->request_frame) {
|
|
DPRINT(("SKINNY: show response in tree: frame/key=%d\n", pinfo->num));
|
|
proto_item *it;
|
|
nstime_t ns;
|
|
it = proto_tree_add_uint(tree, hf_skinny_response_to, tvb, 0, 0, req_resp->request_frame);
|
|
PROTO_ITEM_SET_GENERATED(it);
|
|
|
|
nstime_delta(&ns, &pinfo->fd->abs_ts, &req_resp->request_time);
|
|
it = proto_tree_add_time(tree, hf_skinny_response_time, tvb, 0, 0, &ns);
|
|
PROTO_ITEM_SET_GENERATED(it);
|
|
} else {
|
|
DPRINT(("SKINNY: no response found for frame/key=%d\n", pinfo->num));
|
|
}
|
|
}
|
|
|
|
/*** Messages Handlers ***/
|
|
/* [[[cog
|
|
cog.out(message_dissector_functions)
|
|
]]]*/
|
|
/*[[[end]]]*/
|
|
|
|
typedef void (*message_handler) (ptvcursor_t * cursor, packet_info *pinfo, skinny_conv_info_t * skinny_conv);
|
|
|
|
typedef struct _skinny_opcode_map_t {
|
|
guint32 opcode;
|
|
message_handler handler;
|
|
skinny_message_type_t type;
|
|
const char *name;
|
|
} skinny_opcode_map_t;
|
|
|
|
/* Messages Handler Array */
|
|
/* [[[cog
|
|
cog.out('static const skinny_opcode_map_t skinny_opcode_map[] = {\n')
|
|
for message in skinny.message:
|
|
msg_type = "SKINNY_MSGTYPE_EVENT"
|
|
if message.msgtype == "request":
|
|
msg_type = "SKINNY_MSGTYPE_REQUEST"
|
|
if message.msgtype == "response" and message.request is not None:
|
|
msg_type = "SKINNY_MSGTYPE_RESPONSE"
|
|
cog.out(' {%-6s, %-47s, %-24s, "%s"},\n' %(message.opcode, message.gen_handler(), msg_type, message.name))
|
|
cog.out('};\n')
|
|
]]]*/
|
|
/*[[[end]]]*/
|
|
|
|
/* Dissect a single SKINNY PDU */
|
|
static int dissect_skinny_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
guint offset = 0;
|
|
/*gboolean is_video = FALSE;*/ /* FIX ME: need to indicate video or not */
|
|
ptvcursor_t* cursor;
|
|
conversation_t *conversation;
|
|
skinny_conv_info_t *skinny_conv;
|
|
const skinny_opcode_map_t *opcode_entry = NULL;
|
|
|
|
/* Header fields */
|
|
guint32 hdr_data_length;
|
|
guint32 hdr_version;
|
|
guint32 hdr_opcode;
|
|
guint16 i;
|
|
|
|
/* Set up structures we will need to add the protocol subtree and manage it */
|
|
proto_tree *skinny_tree = NULL;
|
|
proto_item *ti = NULL;
|
|
|
|
/* Initialization */
|
|
hdr_data_length = tvb_get_letohl(tvb, 0);
|
|
hdr_version = tvb_get_letohl(tvb, 4);
|
|
hdr_opcode = tvb_get_letohl(tvb, 8);
|
|
|
|
for (i = 0; i < sizeof(skinny_opcode_map)/sizeof(skinny_opcode_map_t) ; i++) {
|
|
if (skinny_opcode_map[i].opcode == hdr_opcode) {
|
|
opcode_entry = &skinny_opcode_map[i];
|
|
}
|
|
}
|
|
|
|
conversation = find_or_create_conversation(pinfo);
|
|
skinny_conv = (skinny_conv_info_t *)conversation_get_proto_data(conversation, proto_skinny);
|
|
if (!skinny_conv) {
|
|
skinny_conv = wmem_new0(wmem_file_scope(), skinny_conv_info_t);
|
|
//skinny_conv->pending_req_resp = wmem_map_new(wmem_file_scope(), wmem_str_hash, g_str_equal);
|
|
skinny_conv->pending_req_resp = wmem_map_new(wmem_file_scope(), g_direct_hash, g_direct_equal);
|
|
skinny_conv->requests = wmem_map_new(wmem_file_scope(), g_direct_hash, g_direct_equal);
|
|
skinny_conv->responses = wmem_map_new(wmem_file_scope(), g_direct_hash, g_direct_equal);
|
|
skinny_conv->lineId = -1;
|
|
skinny_conv->mtype = SKINNY_MSGTYPE_EVENT;
|
|
conversation_add_proto_data(conversation, proto_skinny, skinny_conv);
|
|
}
|
|
|
|
/* Initialise stat info for passing to tap */
|
|
/* WIP: will be (partially) replaced in favor of conversionation, dependents: ui/voip_calls.c */
|
|
pi_current++;
|
|
if (pi_current == MAX_SKINNY_MESSAGES_IN_PACKET)
|
|
{
|
|
/* Overwrite info in first struct if run out of space... */
|
|
pi_current = 0;
|
|
}
|
|
si = &pi_arr[pi_current];
|
|
si->messId = hdr_opcode;
|
|
si->messageName = val_to_str_ext(hdr_opcode, &message_id_ext, "0x%08X (Unknown)");
|
|
si->callId = 0;
|
|
si->lineId = 0;
|
|
si->passThroughPartyId = 0;
|
|
si->callState = 0;
|
|
g_free(si->callingParty);
|
|
si->callingParty = NULL;
|
|
g_free(si->calledParty);
|
|
si->calledParty = NULL;
|
|
si->mediaReceptionStatus = -1;
|
|
si->mediaTransmissionStatus = -1;
|
|
si->multimediaReceptionStatus = -1;
|
|
si->multimediaTransmissionStatus = -1;
|
|
si->multicastReceptionStatus = -1;
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,"%s ", si->messageName);
|
|
col_set_fence(pinfo->cinfo, COL_INFO);
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_skinny, tvb, offset, hdr_data_length+8, ENC_NA);
|
|
skinny_tree = proto_item_add_subtree(ti, ett_skinny);
|
|
}
|
|
|
|
if (opcode_entry && opcode_entry->type != SKINNY_MSGTYPE_EVENT) {
|
|
skinny_conv->mtype = opcode_entry->type;
|
|
if (opcode_entry->type == SKINNY_MSGTYPE_REQUEST) {
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SKINNY/REQ");
|
|
} else {
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SKINNY/RESP");
|
|
}
|
|
}
|
|
|
|
if (skinny_tree) {
|
|
proto_tree_add_uint(skinny_tree, hf_skinny_data_length, tvb, offset , 4, hdr_data_length);
|
|
proto_tree_add_uint(skinny_tree, hf_skinny_hdr_version, tvb, offset+4, 4, hdr_version);
|
|
proto_tree_add_uint(skinny_tree, hf_skinny_messageId, tvb, offset+8, 4, hdr_opcode );
|
|
}
|
|
offset += 12;
|
|
|
|
cursor = ptvcursor_new(skinny_tree, tvb, offset);
|
|
if (opcode_entry && opcode_entry->handler) {
|
|
opcode_entry->handler(cursor, pinfo, skinny_conv);
|
|
}
|
|
ptvcursor_free(cursor);
|
|
|
|
tap_queue_packet(skinny_tap, pinfo, si);
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/* Code to actually dissect the packets */
|
|
static int
|
|
dissect_skinny(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
/* The general structure of a packet: {IP-Header|TCP-Header|n*SKINNY}
|
|
* SKINNY-Packet: {Header(Size, Reserved)|Data(MessageID, Message-Data)}
|
|
*/
|
|
/* Header fields */
|
|
guint32 hdr_data_length;
|
|
guint32 hdr_version;
|
|
|
|
/* check, if this is really an SKINNY packet, they start with a length + 0 */
|
|
|
|
if (tvb_captured_length(tvb) < 8)
|
|
{
|
|
return 0;
|
|
}
|
|
/* get relevant header information */
|
|
hdr_data_length = tvb_get_letohl(tvb, 0);
|
|
hdr_version = tvb_get_letohl(tvb, 4);
|
|
|
|
/* data_size = MIN(8+hdr_data_length, tvb_length(tvb)) - 0xC; */
|
|
|
|
if (
|
|
(hdr_data_length < 4) ||
|
|
((hdr_version != BASIC_MSG_TYPE) &&
|
|
(hdr_version != V10_MSG_TYPE) &&
|
|
(hdr_version != V11_MSG_TYPE) &&
|
|
(hdr_version != V15_MSG_TYPE) &&
|
|
(hdr_version != V16_MSG_TYPE) &&
|
|
(hdr_version != V17_MSG_TYPE) &&
|
|
(hdr_version != V18_MSG_TYPE) &&
|
|
(hdr_version != V19_MSG_TYPE) &&
|
|
(hdr_version != V20_MSG_TYPE) &&
|
|
(hdr_version != V21_MSG_TYPE) &&
|
|
(hdr_version != V22_MSG_TYPE))
|
|
)
|
|
{
|
|
/* Not an SKINNY packet, just happened to use the same port */
|
|
return 0;
|
|
}
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SKINNY");
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Skinny Client Control Protocol");
|
|
|
|
tcp_dissect_pdus(tvb, pinfo, tree, global_skinny_desegment, 4, get_skinny_pdu_len, dissect_skinny_pdu, data);
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/* Register the protocol with Wireshark */
|
|
void
|
|
proto_register_skinny(void)
|
|
{
|
|
/* Setup list of header fields */
|
|
static hf_register_info hf[] = {
|
|
{ &hf_skinny_data_length,
|
|
{
|
|
"Data length", "skinny.data_length", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Number of bytes in the data portion.", HFILL }},
|
|
{ &hf_skinny_hdr_version,
|
|
{
|
|
"Header version", "skinny.hdr_version", FT_UINT32, BASE_HEX, VALS(header_version), 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_skinny_messageId,
|
|
{
|
|
"Message ID", "skinny.messageId", FT_UINT32, BASE_DEC|BASE_EXT_STRING, &message_id_ext, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_skinny_xmlData,
|
|
{
|
|
"XML data", "skinny.xmlData", FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_skinny_ipv4or6,
|
|
{
|
|
"IPv4or6", "skinny.ipv4or6", FT_UINT32, BASE_DEC|BASE_EXT_STRING, &IpAddrType_ext, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_skinny_response_in,
|
|
{
|
|
"Response In", "skinny.response_in", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_RESPONSE), 0x0,
|
|
"The response to this SKINNY request is in this frame", HFILL }},
|
|
{ &hf_skinny_response_to,
|
|
{
|
|
"Request In", "skinny.response_to", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_REQUEST), 0x0,
|
|
"This is a response to the SKINNY request in this frame", HFILL }},
|
|
{ &hf_skinny_response_time,
|
|
{
|
|
"Response Time", "skinny.response_time", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
|
|
"The time between the Call and the Reply", HFILL }},
|
|
/* [[[cog
|
|
for valuestr in sorted(xml2skinny.fieldsArray.values()):
|
|
cog.out('%s' %valuestr)
|
|
]]]*/
|
|
/*[[[end]]]*/
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_skinny,
|
|
&ett_skinny_tree,
|
|
};
|
|
|
|
module_t *skinny_module;
|
|
|
|
/* Register the protocol name and description */
|
|
proto_skinny = proto_register_protocol("Skinny Client Control Protocol",
|
|
"SKINNY", "skinny");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_skinny, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
skinny_module = prefs_register_protocol(proto_skinny, NULL);
|
|
prefs_register_bool_preference(skinny_module, "desegment",
|
|
"Reassemble SKINNY messages spanning multiple TCP segments",
|
|
"Whether the SKINNY dissector should reassemble messages spanning multiple TCP segments."
|
|
" To use this option, you must also enable"
|
|
" \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
|
|
&global_skinny_desegment);
|
|
|
|
skinny_handle = register_dissector("skinny", dissect_skinny, proto_skinny);
|
|
|
|
skinny_tap = register_tap("skinny");
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_skinny(void)
|
|
{
|
|
/* Skinny content type and internet media type used by other dissectors are the same */
|
|
xml_handle = find_dissector_add_dependency("xml", proto_skinny);
|
|
dissector_add_uint_with_preference("tcp.port", TCP_PORT_SKINNY, skinny_handle);
|
|
ssl_dissector_add(SSL_PORT_SKINNY, skinny_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|