diff options
author | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
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committer | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
commit | 669db206cb1f270046ad400fff7655e20c63e723 (patch) | |
tree | 4eff24a2e16c8963e497e1fc575f35e6af59bd26 /epan/dissectors/packet-mip.c | |
parent | ae46c27a38700af669ef907491081f09df6f6b2c (diff) |
Move dissectors to epan/dissectors directory.
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410
Diffstat (limited to 'epan/dissectors/packet-mip.c')
-rw-r--r-- | epan/dissectors/packet-mip.c | 519 |
1 files changed, 519 insertions, 0 deletions
diff --git a/epan/dissectors/packet-mip.c b/epan/dissectors/packet-mip.c new file mode 100644 index 0000000000..ce2e46bd80 --- /dev/null +++ b/epan/dissectors/packet-mip.c @@ -0,0 +1,519 @@ +/* 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); +} |