/* packet-mip.c
* Routines for Mobile IP dissection
- * Copyright 2000, Stefan Raab <Stefan.Raab@nextel.com>
+ * Copyright 2000, Stefan Raab <sraab@cisco.com>
*
- * $Id: packet-mip.c,v 1.9 2000/11/19 08:54:00 guy Exp $
+ * $Id: packet-mip.c,v 1.19 2001/09/14 07:10:05 guy Exp $
*
* Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@unicom.net>
+ * By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
#include <string.h>
#include <glib.h>
+#include <time.h>
#ifdef NEED_SNPRINTF_H
# include "snprintf.h"
static int hf_mip_m = -1;
static int hf_mip_g = -1;
static int hf_mip_v = -1;
+static int hf_mip_t = -1;
static int hf_mip_code = -1;
static int hf_mip_life = -1;
static int hf_mip_homeaddr = -1;
static int hf_mip_haaddr = -1;
static int hf_mip_coa = -1;
static int hf_mip_ident = -1;
+static int hf_mip_ext_type = -1;
+static int hf_mip_ext_len = -1;
+static int hf_mip_aext_spi = -1;
+static int hf_mip_aext_auth = -1;
+static int hf_mip_next_nai = -1;
/* Initialize the subtree pointers */
static gint ett_mip = -1;
+static gint ett_mip_ext = -1;
/* Port used for Mobile IP */
#define UDP_PORT_MIP 434
-
-
-/*
-struct mip_packet{
- unsigned char type;
-};
-
-
-struct mip_request_packet{
- unsigned char type;
- unsigned char code;
- unsigned char life[2];
- unsigned char homeaddr[4];
- unsigned char haaddr[4];
- unsigned char coa[4];
- unsigned char ident[8];
-
-};
-
-
-struct mip_reply_packet{
- unsigned char type;
- unsigned char code;
- unsigned char life[2];
- unsigned char homeaddr[4];
- unsigned char haaddr[4];
- unsigned char ident[8];
-
-};
-*/
+#define NTP_BASETIME 2208988800ul
static const value_string mip_types[] = {
{1, "Registration Request"},
- {3, "Registration Reply"}
+ {3, "Registration Reply"},
+ {0, NULL},
};
static const value_string mip_reply_codes[]= {
- {0, "Registration Accepted"},
- {1, "Registration Accepted, no simul bindings"},
- {64, "Registration Denied by FA, unspecified reason"},
- {65, "Registration Denied by FA, Admin Prohibit"},
- {66, "Registration Denied by FA, Insufficient Resources"},
- {67, "Registration Denied by FA, MN failed Auth"},
- {68, "Registration Denied by FA, HA failed Auth"},
- {69, "Registration Denied by FA, Lifetime to long"},
- {70, "Registration Denied by FA, Poorly Formed Request"},
- {71, "Registration Denied by FA, Poorly Formed Reply"},
- {72, "Registration Denied by FA, encap unavailable"},
- {73, "Registration Denied by FA, VJ unavailable"},
- {80, "Registration Denied by FA, Home net unreachable"},
- {81, "Registration Denied by FA, Home Agent host unreachable"},
- {82, "Registration Denied by FA, Home Agent port unreachable"},
- {88, "Registration Denied by FA, Home Agent unreachable"},
- {128, "Registration Denied by HA, unspecified"},
- {129, "Registration Denied by HA, Admin Prohibit"},
- {130, "Registration Denied by HA, insufficient resources"},
- {131, "Registration Denied by HA, MN failed Auth"},
- {132, "Registration Denied by HA, FA failed Auth"},
- {133, "Registration Denied by HA, registration ID Mismatch"},
- {134, "Registration Denied by HA, poorly formed request"},
- {135, "Registration Denied by HA, too many simul bindings"},
- {136, "Registration Denied by HA, unknown HA address"},
+ {0, "Reg Accepted"},
+ {1, "Reg Accepted, but Simultaneous Bindings Unsupported."},
+ {64, "Reg Deny (FA)- Unspecified Reason"},
+ {65, "Reg Deny (FA)- Administratively Prohibited"},
+ {66, "Reg Deny (FA)- Insufficient Resources"},
+ {67, "Reg Deny (FA)- MN failed Authentication"},
+ {68, "Reg Deny (FA)- HA failed Authentication"},
+ {69, "Reg Deny (FA)- Requested Lifetime too Long"},
+ {70, "Reg Deny (FA)- Poorly Formed Request"},
+ {71, "Reg Deny (FA)- Poorly Formed Reply"},
+ {72, "Reg Deny (FA)- Requested Encapsulation Unavailable"},
+ {73, "Reg Deny (FA)- VJ Compression Unavailable"},
+ {74, "Reg Deny (FA)- Requested Reverse Tunnel Unavailable"},
+ {75, "Reg Deny (FA)- Reverse Tunnel is Mandatory and 'T' Bit Not Set"},
+ {76, "Reg Deny (FA)- Mobile Node Too Distant"},
+ {79, "Reg Deny (FA)- Delivery Style Not Supported"},
+ {80, "Reg Deny (FA)- Home Network Unreachable"},
+ {81, "Reg Deny (FA)- HA Host Unreachable"},
+ {82, "Reg Deny (FA)- HA Port Unreachable"},
+ {88, "Reg Deny (FA)- HA Unreachable"},
+ {96, "Reg Deny (FA)(NAI) - Non Zero Home Address Required"},
+ {97, "Reg Deny (FA)(NAI) - Missing NAI"},
+ {98, "Reg Deny (FA)(NAI) - Missing Home Agent"},
+ {99, "Reg Deny (FA)(NAI) - Missing Home Address"},
+ {128, "Reg Deny (HA)- Unspecified"},
+ {129, "Reg Deny (HA)- Administratively Prohibited"},
+ {130, "Reg Deny (HA)- Insufficient Resources"},
+ {131, "Reg Deny (HA)- MN Failed Authentication"},
+ {132, "Reg Deny (HA)- FA Failed Authentication"},
+ {133, "Reg Deny (HA)- Registration ID Mismatch"},
+ {134, "Reg Deny (HA)- Poorly Formed Request"},
+ {135, "Reg Deny (HA)- Too Many Simultaneous Bindings"},
+ {136, "Reg Deny (HA)- Unknown HA Address"},
+ {137, "Reg Deny (HA)- Requested Reverse Tunnel Unavailable"},
+ {138, "Reg Deny (HA)- Reverse Tunnel is Mandatory and 'T' Bit Not Set"},
+ {139, "Reg Deny (HA)- Requested Encapsulation Unavailable"},
+ {0, NULL},
+};
+
+static const value_string mip_ext_types[]= {
+ {32, "Mobile-Home Authentication Extension"},
+ {33, "Mobile-Foreign Authentication Extension"},
+ {34, "Foreign-Home Authentication Extension"},
+ {131, "Mobile Node NAI Extension"},
+ {0, NULL},
};
/* Code to actually dissect the packets */
static void
-dissect_mip(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
+dissect_mip( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
/* Set up structures we will need to add the protocol subtree and manage it */
proto_item *ti;
- proto_tree *mip_tree;
+ proto_tree *mip_tree=NULL, *ext_tree=NULL;
guint8 type, code;
-
- /* Make our own tvb until the function call includes one */
- tvbuff_t *tvb;
- packet_info *pinfo = π
- tvb = tvb_create_from_top(offset);
-
- CHECK_DISPLAY_AS_DATA(proto_mip, tvb, pinfo, tree);
-
+ nstime_t ident_time;
+ int eoffset, elen;
+
/* Make entries in Protocol column and Info column on summary display */
- pinfo->current_proto = "Mobile IP";
- if (check_col(fd, COL_PROTOCOL))
- col_set_str(fd, COL_PROTOCOL, "mip");
+ if (check_col(pinfo->fd, COL_PROTOCOL))
+ col_set_str(pinfo->fd, COL_PROTOCOL, "MobileIP");
+ if (check_col(pinfo->fd, COL_INFO))
+ col_clear(pinfo->fd, COL_INFO);
type = tvb_get_guint8(tvb, 0);
if (type==1) {
- if (check_col(fd, COL_INFO))
- col_set_str(fd, COL_INFO, "Mobile IP Registration Request");
+ if (check_col(pinfo->fd, COL_INFO))
+ col_add_fstr(pinfo->fd, COL_INFO, "Reg Request: HAddr=%s COA=%s",
+ ip_to_str(tvb_get_ptr(tvb, 4, 4)), ip_to_str(tvb_get_ptr(tvb,12,4)));
if (tree) {
ti = proto_tree_add_item(tree, proto_mip, tvb, 0, tvb_length(tvb), FALSE);
proto_tree_add_boolean(mip_tree, hf_mip_m, tvb, 1, 1, code);
proto_tree_add_boolean(mip_tree, hf_mip_g, tvb, 1, 1, code);
proto_tree_add_boolean(mip_tree, hf_mip_v, tvb, 1, 1, code);
-
- proto_tree_add_int(mip_tree, hf_mip_life, tvb, 2, 2, tvb_get_ntohs(tvb, 2));
- proto_tree_add_ipv4(mip_tree, hf_mip_homeaddr, tvb, 4, 4, tvb_get_letohl(tvb, 4));
- proto_tree_add_ipv4(mip_tree, hf_mip_haaddr, tvb, 8, 4, tvb_get_letohl(tvb, 8));
- proto_tree_add_ipv4(mip_tree, hf_mip_coa, tvb, 12, 4, tvb_get_letohl(tvb, 12));
- proto_tree_add_bytes(mip_tree, hf_mip_ident, tvb, 16, 8, tvb_get_ptr(tvb, 16, 8));
+ proto_tree_add_boolean(mip_tree, hf_mip_t, tvb, 1, 1, code);
+
+ proto_tree_add_item(mip_tree, hf_mip_life, tvb, 2, 2, FALSE);
+ proto_tree_add_item(mip_tree, hf_mip_homeaddr, tvb, 4, 4, FALSE);
+ proto_tree_add_item(mip_tree, hf_mip_haaddr, tvb, 8, 4, FALSE);
+ proto_tree_add_item(mip_tree, hf_mip_coa, tvb, 12, 4, FALSE);
+ ident_time.secs = tvb_get_ntohl(tvb,16)-(guint32) NTP_BASETIME;
+ ident_time.nsecs = tvb_get_ntohl(tvb,20)*1000;
+ proto_tree_add_time(mip_tree, hf_mip_ident, tvb, 16, 8, &ident_time);
+
+ eoffset = 24;
+ while (tvb_reported_length_remaining(tvb, eoffset) > 0) {
+ /* Registration Extensions */
+ if (eoffset ==24) {
+ ti = proto_tree_add_text(mip_tree, tvb, 24, tvb_length(tvb)-24, "Extensions");
+ ext_tree = proto_item_add_subtree(ti, ett_mip_ext);
+ }
+
+ proto_tree_add_item(ext_tree, hf_mip_ext_type, tvb, eoffset, 1, FALSE);
+ elen = tvb_get_guint8(tvb, eoffset+1);
+ proto_tree_add_int(ext_tree, hf_mip_ext_len, tvb, eoffset+1, 1, elen);
+
+ switch (tvb_get_guint8(tvb, eoffset)) {
+ case 32:
+ case 33:
+ case 34:
+ proto_tree_add_item(ext_tree, hf_mip_aext_spi, tvb, eoffset+2, 4, FALSE);
+ proto_tree_add_item(ext_tree, hf_mip_aext_auth, tvb, eoffset+6, elen-4, FALSE);
+ break;
+ case 131:
+ proto_tree_add_string(ext_tree, hf_mip_next_nai, tvb, eoffset+2,
+ tvb_get_guint8(tvb, eoffset+1),
+ tvb_get_ptr(tvb, eoffset+2,tvb_get_guint8(tvb, eoffset+1)));
+ break;
+ default:
+ proto_tree_add_text(ext_tree, tvb, eoffset + 2, tvb_get_guint8(tvb, eoffset+1),
+ "Unknown Extension");
+ break;
+
+ }
+ eoffset += tvb_get_guint8(tvb, eoffset+1) + 2;
+ }
}
}
-
+
if (type==3){
- if (check_col(fd, COL_INFO))
- col_set_str(fd, COL_INFO, "Mobile IP Registration Reply");
-
+ if (check_col(pinfo->fd, COL_INFO))
+ col_add_fstr(pinfo->fd, COL_INFO, "Reg Reply: HAddr=%s, Code=%u",
+ ip_to_str(tvb_get_ptr(tvb,4,4)), tvb_get_guint8(tvb,1));
+
if (tree) {
ti = proto_tree_add_item(tree, proto_mip, tvb, 0, tvb_length(tvb), FALSE);
- mip_tree = proto_item_add_subtree(ti, ett_mip);
+ mip_tree = proto_item_add_subtree(ti, ett_mip);
proto_tree_add_int(mip_tree, hf_mip_type, tvb, 0, 1, type);
-
- code = tvb_get_guint8(tvb, 1);
- proto_tree_add_uint(mip_tree, hf_mip_code, tvb, 1, 1, code);
- proto_tree_add_int(mip_tree, hf_mip_life, tvb, 2, 2, tvb_get_ntohs(tvb, 2));
- proto_tree_add_ipv4(mip_tree, hf_mip_homeaddr, tvb, 4, 4, tvb_get_letohl(tvb, 4));
- proto_tree_add_ipv4(mip_tree, hf_mip_haaddr, tvb, 8, 4, tvb_get_letohl(tvb, 8));
- proto_tree_add_bytes(mip_tree, hf_mip_ident, tvb, 12, 8, tvb_get_ptr(tvb, 12, 8));
+
+ /* code = tvb_get_guint8(tvb, 1);
+ proto_tree_add_uint(mip_tree, hf_mip_code, tvb, 1, 1, code);*/
+ proto_tree_add_item(mip_tree, hf_mip_code, tvb, 1, 1, FALSE);
+ proto_tree_add_item(mip_tree, hf_mip_life, tvb, 2, 2, FALSE);
+ proto_tree_add_item(mip_tree, hf_mip_homeaddr, tvb, 4, 4, FALSE);
+ proto_tree_add_item(mip_tree, hf_mip_haaddr, tvb, 8, 4, FALSE);
+ ident_time.secs = tvb_get_ntohl(tvb,12)-(guint32) NTP_BASETIME;
+ ident_time.nsecs = tvb_get_ntohl(tvb,16)*1000;
+ proto_tree_add_time(mip_tree, hf_mip_ident, tvb, 12, 8, &ident_time);
+
+ eoffset = 20;
+ while (tvb_reported_length_remaining(tvb, eoffset) > 0) {
+ /* Registration Extensions */
+ if (eoffset==20) {
+ ti = proto_tree_add_text(mip_tree, tvb, 20, tvb_length(tvb)-20, "Extensions");
+ ext_tree = proto_item_add_subtree(ti, ett_mip_ext);
+ }
+
+ proto_tree_add_int(ext_tree, hf_mip_ext_type, tvb, eoffset, 1,
+ tvb_get_guint8(tvb, eoffset));
+ elen = tvb_get_guint8(tvb, eoffset+1);
+ proto_tree_add_int(ext_tree, hf_mip_ext_len, tvb, eoffset+1, 1, elen);
+
+ switch (tvb_get_guint8(tvb, eoffset)) {
+ case 32:
+ case 33:
+ case 34:
+ proto_tree_add_item(ext_tree, hf_mip_aext_spi, tvb, eoffset+2, 4, FALSE);
+ proto_tree_add_item(ext_tree, hf_mip_aext_auth, tvb, eoffset+6, elen-4, FALSE);
+ break;
+ case 131:
+ proto_tree_add_item(ext_tree, hf_mip_next_nai, tvb, eoffset+2,
+ tvb_get_guint8(tvb, eoffset+1), FALSE);
+ break;
+ default:
+ proto_tree_add_text(ext_tree, tvb, eoffset + 2, tvb_get_guint8(tvb, eoffset+1),
+ "Unknown Extension");
+ break;
+ }
+ eoffset += tvb_get_guint8(tvb, eoffset+1) + 2;
+ }
}
}
}
{ &hf_mip_type,
{ "Message Type", "mip.type",
FT_INT8, BASE_DEC, VALS(mip_types), 0,
- "Mobile IP Message type." }
+ "Mobile IP Message type.", HFILL }
},
{ &hf_mip_s,
{"Simultaneous Bindings", "mip.s",
+
FT_BOOLEAN, 8, NULL, 128,
- "Simultaneous Bindings Allowed" }
+ "Simultaneous Bindings Allowed", HFILL }
},
{ &hf_mip_b,
{"Broadcast Datagrams", "mip.b",
FT_BOOLEAN, 8, NULL, 64,
- "Broadcast Datagrams requested" }
+ "Broadcast Datagrams requested", HFILL }
},
{ &hf_mip_d,
{ "Co-lcated Care-of Address", "mip.d",
FT_BOOLEAN, 8, NULL, 32,
- "MN using Co-located Care-of address" }
+ "MN using Co-located Care-of address", HFILL }
},
{ &hf_mip_m,
{"Minimal Encapsulation", "mip.m",
FT_BOOLEAN, 8, NULL, 16,
- "MN wants Minimal encapsulation" }
+ "MN wants Minimal encapsulation", HFILL }
},
{ &hf_mip_g,
{"GRE", "mip.g",
FT_BOOLEAN, 8, NULL, 8,
- "MN wants GRE encapsulation" }
+ "MN wants GRE encapsulation", HFILL }
},
{ &hf_mip_v,
{ "Van Jacobson", "mip.v",
FT_BOOLEAN, 8, NULL, 4,
- "Van Jacobson" }
+ "Van Jacobson", HFILL }
+ },
+ { &hf_mip_t,
+ { "Reverse Tunneling", "mip.t",
+ FT_BOOLEAN, 8, NULL, 2,
+ "Reverse tunneling requested", HFILL }
},
{ &hf_mip_code,
{ "Reply Code", "mip.code",
FT_UINT8, BASE_DEC, VALS(mip_reply_codes), 0,
- "Mobile IP Reply code." }
+ "Mobile IP Reply code.", HFILL }
},
{ &hf_mip_life,
{ "Lifetime", "mip.life",
- FT_INT16, BASE_DEC, NULL, 0,
- "Mobile IP Lifetime." }
+ FT_UINT16, BASE_DEC, NULL, 0,
+ "Mobile IP Lifetime.", HFILL }
},
{ &hf_mip_homeaddr,
{ "Home Address", "mip.homeaddr",
FT_IPv4, BASE_NONE, NULL, 0,
- "Mobile Node's home address." }
+ "Mobile Node's home address.", HFILL }
},
{ &hf_mip_haaddr,
{ "Home Agent", "mip.haaddr",
FT_IPv4, BASE_NONE, NULL, 0,
- "Home agent IP Address." }
+ "Home agent IP Address.", HFILL }
},
{ &hf_mip_coa,
{ "Care of Address", "mip.coa",
FT_IPv4, BASE_NONE, NULL, 0,
- "Care of Address." }
+ "Care of Address.", HFILL }
},
{ &hf_mip_ident,
{ "Identification", "mip.ident",
- FT_BYTES, BASE_NONE, NULL, 0,
- "MN Identification." }
+ FT_ABSOLUTE_TIME, BASE_NONE, NULL, 0,
+ "MN Identification.", HFILL }
+ },
+ { &hf_mip_ext_type,
+ { "Extension Type", "mip.ext.type",
+ FT_INT8, BASE_DEC, VALS(mip_ext_types), 0,
+ "Mobile IP Extension Type.", HFILL }
+ },
+ { &hf_mip_ext_len,
+ { "Extension Length", "mip.ext.len",
+ FT_INT8, BASE_DEC, NULL, 0,
+ "Mobile IP Extension Length.", HFILL }
+ },
+ { &hf_mip_aext_spi,
+ { "SPI", "mip.auth.spi",
+ FT_INT32, BASE_HEX, NULL, 0,
+ "Authentication Header Security Parameter Index.", HFILL }
+ },
+ { &hf_mip_aext_auth,
+ { "Authenticator", "mip.auth.auth",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "Authenticator.", HFILL }
+ },
+ { &hf_mip_next_nai,
+ { "NAI", "mip.nai",
+ FT_STRING, BASE_NONE, NULL, 0,
+ "NAI", HFILL }
},
-
-
-
-
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_mip,
+ &ett_mip_ext,
};
/* Register the protocol name and description */
- proto_mip = proto_register_protocol("Mobile IP", "mip");
+ proto_mip = proto_register_protocol("Mobile IP", "Mobile IP", "mip");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_mip, hf, array_length(hf));
void
proto_reg_handoff_mip(void)
{
- old_dissector_add("udp.port", UDP_PORT_MIP, dissect_mip);
+ dissector_add("udp.port", UDP_PORT_MIP, dissect_mip, proto_mip);
}
git.samba.org / obnox / wireshark / wip.git / blobdiff