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-rw-r--r--packet-mip.c519
1 files changed, 0 insertions, 519 deletions
diff --git a/packet-mip.c b/packet-mip.c
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--- a/packet-mip.c
+++ /dev/null
@@ -1,519 +0,0 @@
-/* packet-mip.c
- * Routines for Mobile IP dissection
- * Copyright 2000, Stefan Raab <sraab@cisco.com>
- *
- * $Id$
- *
- * Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@ethereal.com>
- * 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 <stdio.h>
-#include <stdlib.h>
-
-#include <string.h>
-#include <glib.h>
-#include <time.h>
-
-#include <epan/packet.h>
-
-/* Initialize the protocol and registered fields */
-static int proto_mip = -1;
-static int hf_mip_type = -1;
-static int hf_mip_flags = -1;
-static int hf_mip_s = -1;
-static int hf_mip_b = -1;
-static int hf_mip_d = -1;
-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_stype = -1;
-static int hf_mip_ext_len = -1;
-static int hf_mip_ext = -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_flags = -1;
-static gint ett_mip_ext = -1;
-static gint ett_mip_exts = -1;
-
-/* Port used for Mobile IP */
-#define UDP_PORT_MIP 434
-#define NTP_BASETIME 2208988800ul
-
-typedef enum {
- REGISTRATION_REQUEST = 1,
- REGISTRATION_REPLY = 3
-} mipMessageTypes;
-
-static const value_string mip_types[] = {
- {REGISTRATION_REQUEST, "Registration Request"},
- {REGISTRATION_REPLY, "Registration Reply"},
- {0, NULL},
-};
-
-static const value_string mip_reply_codes[]= {
- {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},
-};
-
-typedef enum {
- MH_AUTH_EXT = 32,
- MF_AUTH_EXT = 33,
- FH_AUTH_EXT = 34,
- GEN_AUTH_EXT = 36, /* RFC 3012 */
- OLD_CVSE_EXT = 37, /* RFC 3115 */
- CVSE_EXT = 38, /* RFC 3115 */
- MN_NAI_EXT = 131,
- MF_CHALLENGE_EXT = 132, /* RFC 3012 */
- OLD_NVSE_EXT = 133, /* RFC 3115 */
- NVSE_EXT = 134 /* RFC 3115 */
-} MIP_EXTS;
-static const value_string mip_ext_types[]= {
- {MH_AUTH_EXT, "Mobile-Home Authentication Extension"},
- {MF_AUTH_EXT, "Mobile-Foreign Authentication Extension"},
- {FH_AUTH_EXT, "Foreign-Home Authentication Extension"},
- {MN_NAI_EXT, "Mobile Node NAI Extension"},
- {GEN_AUTH_EXT, "Generalized Mobile-IP Authentication Extension"},
- {MF_CHALLENGE_EXT, "MN-FA Challenge Extension"},
- {CVSE_EXT, "Critical Vendor/Organization Specific Extension"},
- {OLD_CVSE_EXT, "Critical Vendor/Organization Specific Extension"},
- {NVSE_EXT, "Normal Vendor/Organization Specific Extension"},
- {OLD_NVSE_EXT, "Normal Vendor/Organization Specific Extension"},
- {0, NULL},
-};
-
-static const value_string mip_ext_stypes[]= {
- {1, "MN AAA Extension"},
- {0, NULL},
-};
-/* Code to dissect extensions */
-static void
-dissect_mip_extensions( tvbuff_t *tvb, int offset, proto_tree *tree)
-{
- proto_item *ti;
- proto_tree *exts_tree=NULL;
- proto_tree *ext_tree;
- size_t ext_len;
- guint8 ext_type;
- guint8 ext_subtype=0;
- size_t hdrLen;
-
- /* None of this really matters if we don't have a tree */
- if (!tree) return;
-
- /* Add our tree, if we have extensions */
- ti = proto_tree_add_text(tree, tvb, offset, -1, "Extensions");
- exts_tree = proto_item_add_subtree(ti, ett_mip_exts);
-
- /* And, handle each extension */
- while (tvb_reported_length_remaining(tvb, offset) > 0) {
-
- /* Get our extension info */
- ext_type = tvb_get_guint8(tvb, offset);
- if (ext_type == GEN_AUTH_EXT) {
- /*
- * Very nasty . . breaks normal extensions, since the length is
- * in the wrong place :(
- */
- ext_subtype = tvb_get_guint8(tvb, offset + 1);
- ext_len = tvb_get_ntohs(tvb, offset + 2);
- hdrLen = 4;
- } else {
- ext_len = tvb_get_guint8(tvb, offset + 1);
- hdrLen = 2;
- }
-
- ti = proto_tree_add_text(exts_tree, tvb, offset, ext_len + hdrLen,
- "Extension: %s",
- val_to_str(ext_type, mip_ext_types,
- "Unknown Extension %u"));
- ext_tree = proto_item_add_subtree(ti, ett_mip_ext);
-
- proto_tree_add_item(ext_tree, hf_mip_ext_type, tvb, offset, 1, ext_type);
- offset++;
- if (ext_type != GEN_AUTH_EXT) {
- /* Another nasty hack since GEN_AUTH_EXT broke everything */
- proto_tree_add_uint(ext_tree, hf_mip_ext_len, tvb, offset, 1, ext_len);
- offset++;
- }
-
- switch(ext_type) {
- case MH_AUTH_EXT:
- case MF_AUTH_EXT:
- case FH_AUTH_EXT:
- /* All these extensions look the same. 4 byte SPI followed by a key */
- proto_tree_add_item(ext_tree, hf_mip_aext_spi, tvb, offset, 4, FALSE);
- proto_tree_add_item(ext_tree, hf_mip_aext_auth, tvb, offset+4, ext_len-4,
- FALSE);
- break;
- case MN_NAI_EXT:
- proto_tree_add_item(ext_tree, hf_mip_next_nai, tvb, offset,
- ext_len, FALSE);
- break;
-
- case GEN_AUTH_EXT: /* RFC 3012 */
- /*
- * Very nasty . . breaks normal extensions, since the length is
- * in the wrong place :(
- */
- proto_tree_add_uint(ext_tree, hf_mip_ext_stype, tvb, offset, 1, ext_subtype);
- offset++;
- proto_tree_add_uint(ext_tree, hf_mip_ext_len, tvb, offset, 2, ext_len);
- offset+=2;
- /* SPI */
- proto_tree_add_item(ext_tree, hf_mip_aext_spi, tvb, offset, 4, FALSE);
- /* Key */
- proto_tree_add_item(ext_tree, hf_mip_aext_auth, tvb, offset + 4,
- ext_len - 4, FALSE);
-
- break;
- case OLD_CVSE_EXT: /* RFC 3115 */
- case CVSE_EXT: /* RFC 3115 */
- case OLD_NVSE_EXT: /* RFC 3115 */
- case NVSE_EXT: /* RFC 3115 */
- case MF_CHALLENGE_EXT: /* RFC 3012 */
- /* The default dissector is good here. The challenge is all hex anyway. */
- default:
- proto_tree_add_item(ext_tree, hf_mip_ext, tvb, offset, ext_len, FALSE);
- break;
- } /* ext type */
-
- offset += ext_len;
- } /* while data remaining */
-
-} /* dissect_mip_extensions */
-
-/* Code to actually dissect the packets */
-static void
-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=NULL;
- proto_item *tf;
- proto_tree *flags_tree;
- guint8 type;
- guint8 flags;
- nstime_t ident_time;
- size_t offset=0;
-
- /* Make entries in Protocol column and Info column on summary display */
-
- if (check_col(pinfo->cinfo, COL_PROTOCOL))
- col_set_str(pinfo->cinfo, COL_PROTOCOL, "MobileIP");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_clear(pinfo->cinfo, COL_INFO);
-
- type = tvb_get_guint8(tvb, offset);
- switch (type) {
- case REGISTRATION_REQUEST:
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_fstr(pinfo->cinfo, 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, offset, -1, FALSE);
- mip_tree = proto_item_add_subtree(ti, ett_mip);
-
- /* type */
- proto_tree_add_uint(mip_tree, hf_mip_type, tvb, offset, 1, type);
- offset++;
-
- /* flags */
- flags = tvb_get_guint8(tvb, offset);
- tf = proto_tree_add_uint(mip_tree, hf_mip_flags, tvb,
- offset, 1, flags);
- flags_tree = proto_item_add_subtree(tf, ett_mip_flags);
- proto_tree_add_boolean(flags_tree, hf_mip_s, tvb, offset, 1, flags);
- proto_tree_add_boolean(flags_tree, hf_mip_b, tvb, offset, 1, flags);
- proto_tree_add_boolean(flags_tree, hf_mip_d, tvb, offset, 1, flags);
- proto_tree_add_boolean(flags_tree, hf_mip_m, tvb, offset, 1, flags);
- proto_tree_add_boolean(flags_tree, hf_mip_g, tvb, offset, 1, flags);
- proto_tree_add_boolean(flags_tree, hf_mip_v, tvb, offset, 1, flags);
- proto_tree_add_boolean(flags_tree, hf_mip_t, tvb, offset, 1, flags);
- offset++;
-
- /* lifetime */
- proto_tree_add_item(mip_tree, hf_mip_life, tvb, offset, 2, FALSE);
- offset +=2;
-
- /* home address */
- proto_tree_add_item(mip_tree, hf_mip_homeaddr, tvb, offset, 4, FALSE);
- offset += 4;
-
- /* home agent address */
- proto_tree_add_item(mip_tree, hf_mip_haaddr, tvb, offset, 4, FALSE);
- offset += 4;
-
- /* Care of Address */
- proto_tree_add_item(mip_tree, hf_mip_coa, tvb, offset, 4, FALSE);
- offset += 4;
-
- /* Identifier */
- 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, offset, 8, &ident_time);
- offset += 8;
-
- } /* if tree */
- break;
- case REGISTRATION_REPLY:
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_fstr(pinfo->cinfo, COL_INFO, "Reg Reply: HAddr=%s, Code=%u",
- ip_to_str(tvb_get_ptr(tvb,4,4)), tvb_get_guint8(tvb,1));
-
- if (tree) {
- /* Add Subtree */
- ti = proto_tree_add_item(tree, proto_mip, tvb, offset, -1, FALSE);
- mip_tree = proto_item_add_subtree(ti, ett_mip);
-
- /* Type */
- proto_tree_add_uint(mip_tree, hf_mip_type, tvb, offset, 1, type);
- offset++;
-
- /* Reply Code */
- proto_tree_add_item(mip_tree, hf_mip_code, tvb, offset, 1, FALSE);
- offset++;
-
- /* Registration Lifetime */
- proto_tree_add_item(mip_tree, hf_mip_life, tvb, offset, 2, FALSE);
- offset += 2;
-
- /* Home address */
- proto_tree_add_item(mip_tree, hf_mip_homeaddr, tvb, offset, 4, FALSE);
- offset += 4;
-
- /* Home Agent Address */
- proto_tree_add_item(mip_tree, hf_mip_haaddr, tvb, offset, 4, FALSE);
- offset += 4;
-
- /* Identifier */
- 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, offset, 8, &ident_time);
- offset += 8;
- } /* if tree */
-
- break;
- } /* End switch */
-
- if (tree) {
- if (tvb_reported_length_remaining(tvb, offset) > 0)
- dissect_mip_extensions(tvb, offset, mip_tree);
- }
-} /* dissect_mip */
-
-/* Register the protocol with Ethereal */
-void proto_register_mip(void)
-{
-
-/* Setup list of header fields */
- static hf_register_info hf[] = {
- { &hf_mip_type,
- { "Message Type", "mip.type",
- FT_UINT8, BASE_DEC, VALS(mip_types), 0,
- "Mobile IP Message type.", HFILL }
- },
- { &hf_mip_flags,
- {"Flags", "mip.flags",
- FT_UINT8, BASE_HEX, NULL, 0x0,
- "", HFILL}
- },
- { &hf_mip_s,
- {"Simultaneous Bindings", "mip.s",
-
- FT_BOOLEAN, 8, NULL, 128,
- "Simultaneous Bindings Allowed", HFILL }
- },
- { &hf_mip_b,
- {"Broadcast Datagrams", "mip.b",
- FT_BOOLEAN, 8, NULL, 64,
- "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", HFILL }
- },
- { &hf_mip_m,
- {"Minimal Encapsulation", "mip.m",
- FT_BOOLEAN, 8, NULL, 16,
- "MN wants Minimal encapsulation", HFILL }
- },
- { &hf_mip_g,
- {"GRE", "mip.g",
- FT_BOOLEAN, 8, NULL, 8,
- "MN wants GRE encapsulation", HFILL }
- },
- { &hf_mip_v,
- { "Van Jacobson", "mip.v",
- FT_BOOLEAN, 8, NULL, 4,
- "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.", HFILL }
- },
- { &hf_mip_life,
- { "Lifetime", "mip.life",
- 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.", HFILL }
- },
-
- { &hf_mip_haaddr,
- { "Home Agent", "mip.haaddr",
- FT_IPv4, BASE_NONE, NULL, 0,
- "Home agent IP Address.", HFILL }
- },
- { &hf_mip_coa,
- { "Care of Address", "mip.coa",
- FT_IPv4, BASE_NONE, NULL, 0,
- "Care of Address.", HFILL }
- },
- { &hf_mip_ident,
- { "Identification", "mip.ident",
- FT_ABSOLUTE_TIME, BASE_NONE, NULL, 0,
- "MN Identification.", HFILL }
- },
- { &hf_mip_ext_type,
- { "Extension Type", "mip.ext.type",
- FT_UINT8, BASE_DEC, VALS(mip_ext_types), 0,
- "Mobile IP Extension Type.", HFILL }
- },
- { &hf_mip_ext_stype,
- { "Gen Auth Ext SubType", "mip.ext.auth.subtype",
- FT_UINT8, BASE_DEC, VALS(mip_ext_stypes), 0,
- "Mobile IP Auth Extension Sub Type.", HFILL }
- },
- { &hf_mip_ext_len,
- { "Extension Length", "mip.ext.len",
- FT_UINT16, BASE_DEC, NULL, 0,
- "Mobile IP Extension Length.", HFILL }
- },
- { &hf_mip_ext,
- { "Extension", "mip.extension",
- FT_BYTES, BASE_HEX, NULL, 0,
- "Extension", HFILL }
- },
- { &hf_mip_aext_spi,
- { "SPI", "mip.auth.spi",
- FT_UINT32, 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_flags,
- &ett_mip_ext,
- &ett_mip_exts,
- };
-
- /* Register the protocol name and description */
- proto_mip = proto_register_protocol("Mobile IP", "Mobile IP", "mip");
-
- /* Register the dissector by name */
- register_dissector("mip", dissect_mip, proto_mip);
-
- /* Required function calls to register the header fields and subtrees used */
- proto_register_field_array(proto_mip, hf, array_length(hf));
- proto_register_subtree_array(ett, array_length(ett));
-}
-
-void
-proto_reg_handoff_mip(void)
-{
- dissector_handle_t mip_handle;
-
- mip_handle = find_dissector("mip");
- dissector_add("udp.port", UDP_PORT_MIP, mip_handle);
-}
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