/* * packet-3g-a11.c * Routines for CDMA2000 A11 packet trace * Copryright 2002, Ryuji Somegawa * packet-3g-a11.c was written based on 'packet-mip.c'. * * packet-mip.c * Routines for Mobile IP dissection * Copyright 2000, Stefan Raab * * $Id: packet-3g-a11.c,v 1.6 2004/03/21 23:46:39 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs * 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 #include #include #include #include #include /* Initialize the protocol and registered fields */ static int proto_a11 = -1; static int hf_a11_type = -1; static int hf_a11_flags = -1; static int hf_a11_s = -1; static int hf_a11_b = -1; static int hf_a11_d = -1; static int hf_a11_m = -1; static int hf_a11_g = -1; static int hf_a11_v = -1; static int hf_a11_t = -1; static int hf_a11_code = -1; static int hf_a11_status = -1; static int hf_a11_life = -1; static int hf_a11_homeaddr = -1; static int hf_a11_haaddr = -1; static int hf_a11_coa = -1; static int hf_a11_ident = -1; static int hf_a11_ext_type = -1; static int hf_a11_ext_stype = -1; static int hf_a11_ext_len = -1; static int hf_a11_ext = -1; static int hf_a11_aext_spi = -1; static int hf_a11_aext_auth = -1; static int hf_a11_next_nai = -1; static int hf_a11_ses_key = -1; static int hf_a11_ses_mnsrid = -1; static int hf_a11_ses_msid_type = -1; static int hf_a11_ses_msid_len = -1; static int hf_a11_ses_msid = -1; static int hf_a11_ses_ptype = -1; static int hf_a11_vse_vid = -1; static int hf_a11_vse_apptype = -1; static int hf_a11_vse_canid = -1; static int hf_a11_vse_panid = -1; static int hf_a11_vse_mnsrid = -1; static int hf_a11_vse_srvopt = -1; static int hf_a11_vse_pdit = -1; static int hf_a11_vse_code = -1; static int hf_a11_vse_dormant = -1; static int hf_a11_vse_ppaddr = -1; /* Initialize the subtree pointers */ static gint ett_a11 = -1; static gint ett_a11_flags = -1; static gint ett_a11_ext = -1; static gint ett_a11_exts = -1; static gint ett_a11_radius = -1; static gint ett_a11_radiuses = -1; /* Port used for Mobile IP based Tunneling Protocol (A11) */ #define UDP_PORT_3GA11 699 #define NTP_BASETIME 2208988800ul typedef enum { REGISTRATION_REQUEST = 1, REGISTRATION_REPLY = 3, REGISTRATION_UPDATE = 20, REGISTRATION_ACK =21, SESSION_UPDATE = 22, SESSION_ACK = 23 } a11MessageTypes; static const value_string a11_types[] = { {REGISTRATION_REQUEST, "Registration Request"}, {REGISTRATION_REPLY, "Registration Reply"}, {REGISTRATION_UPDATE, "Registration Update"}, {REGISTRATION_ACK, "Registration Ack"}, {SESSION_UPDATE, "Session Update"}, {SESSION_ACK, "Session Update Ack"}, {0, NULL}, }; static const value_string a11_reply_codes[]= { {0, "Reg Accepted"}, {9, "Connection Update"}, #if 0 {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"}, #endif {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"}, {141, "Reg Deny (HA)- unsupported Vendor ID / Application Type in CVSE"}, {193, "Connection Release - Reason Unspecified"}, {194, "Connection Release - PPP Timeout"}, {195, "Connection Release - Registration Timeout"}, {196, "Connection Release - PDSN Error"}, {197, "Connection Release - inter-PCF handoff"}, {198, "Connection Release - inter-PDSN handoff"}, {199, "Connection Release - PDSN OAM&P Intervention"}, {200, "Connection Release - Accounting Error"}, }; static const value_string a11_ack_status[]= { {0, "Update Accepted"}, {128, "Update Deny - Unspecified"}, {131, "Update Deny - Sending Node Failed Authentication"}, {133, "Update Deny - Registration ID Mismatch"}, {134, "Update Deny - Poorly Formed Request"}, {193, "Update Deny - Session Parameter Not Updated"}, }; 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 */ SS_EXT = 39, /* 3GPP2 IOS4.2 */ RU_AUTH_EXT = 40, /* 3GPP2 IOS4.2 */ 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 a11_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"}, {SS_EXT, "Session Specific Extension"}, {RU_AUTH_EXT, "Registration Update Authentication Extension"}, {OLD_CVSE_EXT, "Critical Vendor/Organization Specific Extension (OLD)"}, {NVSE_EXT, "Normal Vendor/Organization Specific Extension"}, {OLD_NVSE_EXT, "Normal Vendor/Organization Specific Extension (OLD)"}, {0, NULL}, }; static const value_string a11_ext_stypes[]= { {1, "MN AAA Extension"}, {0, NULL}, }; static const value_string a11_ext_nvose_srvopt[]= { {0x0021, "3G High Speed Packet Data"}, {0x003C, "Link Layer Assisted Header Removal"}, {0x003D, "Link Layer Assisted Robust Header Compression"}, {0, NULL}, }; static const value_string a11_ext_nvose_pdsn_code[]= { {0xc1, "Connection Release - reason unspecified"}, {0xc2, "Connection Release - PPP time-out"}, {0xc3, "Connection Release - registration time-out"}, {0xc4, "Connection Release - PDSN error"}, {0xc5, "Connection Release - inter-PCF handoff"}, {0xc6, "Connection Release - inter-PDSN handoff"}, {0xc7, "Connection Release - PDSN OAM&P intervention"}, {0xc8, "Connection Release - accounting error"}, {0xca, "Connection Release - user (NAI) failed authentication"}, {0x00, NULL}, }; static const value_string a11_ext_dormant[]= { {0x0000, "all MS packet data service instances are dormant"}, {0, NULL}, }; static const value_string a11_ext_app[]= { {0x0101, "Accounting (RADIUS)"}, {0x0102, "Accounting (DIAMETER)"}, {0x0201, "Mobility Evnet Indicator (Mobility)"}, {0x0301, "Data Available Indicator (Data Ready to Send)"}, {0x0401, "Access Network Identifiers (ANID)"}, {0x0501, "PDSN Identifiers (Anchor P-P Address)"}, {0x0601, "Indicators (All Dormant Indicator)"}, {0x0701, "PDSN Code (PDSN Code)"}, {0x0801, "Session Parameter (RN-PDIT:Radio Network Packet Data Inactivity Timer)"}, {0x0901, "Service Option (Service Option Value)"}, {0, NULL}, }; static const value_string a11_airlink_types[]= { {1, "Session Setup (Y=1)"}, {2, "Active Start (Y=2)"}, {3, "Active Stop (Y=3)"}, {4, "Short Data Burst (Y=4)"}, {0, NULL}, }; #define ATTRIBUTE_NAME_LEN_MAX 128 #define ATTR_TYPE_NULL 0 #define ATTR_TYPE_INT 1 #define ATTR_TYPE_STR 2 #define ATTR_TYPE_IPV4 3 #define ATTR_TYPE_TYPE 4 #define ATTR_TYPE_MSID 5 struct radius_attribute { char attrname[ATTRIBUTE_NAME_LEN_MAX]; int type; int subtype; int bytes; int data_type; }; static const struct radius_attribute attrs[]={ {"Airlink Record", 26, 40, 4, ATTR_TYPE_TYPE}, {"R-P Session ID", 26, 41, 4, ATTR_TYPE_INT}, {"Airlink Sequence Number", 26, 42, 4, ATTR_TYPE_INT}, {"MSID", 31, -1, 15, ATTR_TYPE_MSID}, {"Serving PCF", 26, 9, 4, ATTR_TYPE_IPV4}, {"BSID", 26, 10, 12, ATTR_TYPE_STR}, {"ESN", 26, 52, 15, ATTR_TYPE_STR}, {"User Zone", 26, 11, 4, ATTR_TYPE_INT}, {"Forward FCH Mux Option", 26, 12, 4, ATTR_TYPE_INT}, {"Reverse FCH Mux Option", 26, 13, 4, ATTR_TYPE_INT}, {"Service Option", 26, 16, 4, ATTR_TYPE_INT}, {"Forward Traffic Type", 26, 17, 4, ATTR_TYPE_INT}, {"Reverse Traffic Type", 26, 18, 4, ATTR_TYPE_INT}, {"FCH Frame Size", 26, 19, 4, ATTR_TYPE_INT}, {"Forward FCH RC", 26, 20, 4, ATTR_TYPE_INT}, {"Reverse FCH RC", 26, 21, 4, ATTR_TYPE_INT}, {"DCCH Frame Size 0/5/20", 26, 50, 4, ATTR_TYPE_INT}, {"Forward DCCH Mux Option", 26, 84, 4, ATTR_TYPE_INT}, {"Reverse DCCH Mux Option", 26, 85, 4, ATTR_TYPE_INT}, {"Forward DCCH RC", 26, 86, 4, ATTR_TYPE_INT}, {"Reverse DCCH RC", 26, 87, 4, ATTR_TYPE_INT}, {"Airlink Priority", 26, 39, 4, ATTR_TYPE_INT}, {"Active Connection Time", 26, 49, 4, ATTR_TYPE_INT}, {"Mobile Orig/Term Ind.", 26, 45, 4, ATTR_TYPE_INT}, {"SDB Octet Count (Term.)", 26, 31, 4, ATTR_TYPE_INT}, {"SDB Octet Count (Orig.)", 26, 32, 4, ATTR_TYPE_INT}, {"Unknown", -1, -1, -1, ATTR_TYPE_NULL}, }; #define NUM_ATTR (sizeof(attrs)/sizeof(struct radius_attribute)) #define MAX_STRVAL 16 static void dissect_a11_radius( tvbuff_t *, int, proto_tree *, int); /* RADIUS attributed */ static void dissect_a11_radius( tvbuff_t *tvb, int offset, proto_tree *tree, int app_len) { proto_item *ti; proto_tree *radius_tree=NULL; size_t radius_len; guint8 radius_type; guint8 radius_subtype; size_t hdrLen; int attribute_type; guint offset0; guint i; guchar str_val[MAX_STRVAL]; /* None of this really matters if we don't have a tree */ if (!tree) return; offset0 = offset; /* return if length of extension is not valid */ if (tvb_reported_length_remaining(tvb, offset) < 12) { return; } /* Add our tree, if we have Airlink Records */ /* XXX: This is Very Dirty way */ radius_type = tvb_get_guint8(tvb, offset); radius_subtype = tvb_get_guint8(tvb, offset + 6); hdrLen = 6; attribute_type = tvb_get_ntohl(tvb, offset + 8); if(radius_type == 26 && radius_subtype == 40) { ti = proto_tree_add_text(tree, tvb, offset - 2, app_len, "%s Airlink Record", val_to_str(attribute_type, a11_airlink_types, "Unknown")); } else { ti = proto_tree_add_text(tree, tvb, offset - 2, app_len, "Invalid Airlink Records"); return; } radius_tree = proto_item_add_subtree(ti, ett_a11_radiuses); /* And, handle each record */ while (tvb_reported_length_remaining(tvb, offset) > 0 && ((int)offset-(int)offset0) = 0) { switch(attrs[attribute_type].data_type) { case ATTR_TYPE_INT: ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: %s (%04x)", attrs[attribute_type].attrname, tvb_get_ntohl(tvb,offset+8)); break; case ATTR_TYPE_IPV4: ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: %s (%s)", attrs[attribute_type].attrname, ip_to_str(tvb_get_ptr(tvb,offset+8,4))); break; case ATTR_TYPE_TYPE: ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: %s (%s)", attrs[attribute_type].attrname, val_to_str(tvb_get_ntohl(tvb,offset+8),a11_airlink_types,"Unknown")); break; case ATTR_TYPE_STR: strncpy(str_val, tvb_get_ptr(tvb,offset+8,radius_len - 8), radius_len - 8); if(radius_len - 8 < MAX_STRVAL) { str_val[radius_len - 8] = '\0'; } else { str_val[MAX_STRVAL-1] = '\0'; } ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: %s (%s)", attrs[attribute_type].attrname, str_val); break; case ATTR_TYPE_MSID: strncpy(str_val, tvb_get_ptr(tvb,offset+2,radius_len - 2), radius_len - 2); if(radius_len - 2 < MAX_STRVAL) { str_val[radius_len - 2] = '\0'; } else { str_val[MAX_STRVAL-1] = '\0'; } ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: %s (%s)", attrs[attribute_type].attrname, str_val); break; case ATTR_TYPE_NULL: break; default: ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: %s", attrs[attribute_type].attrname); break; } } else { ti = proto_tree_add_text(radius_tree, tvb, offset, radius_len, "RADIUS: Unknown Attribute (Type:%d, SubType:%d)", radius_type,radius_subtype); } if(radius_len <= 0) { return; } offset += radius_len; } } /* Code to dissect extensions */ static void dissect_a11_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; gint16 apptype = -1; /* 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_a11_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 if (ext_type == CVSE_EXT || ext_type == OLD_CVSE_EXT) { ext_len = tvb_get_ntohs(tvb, offset + 2); ext_subtype = tvb_get_guint8(tvb, offset + 8); 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, a11_ext_types, "Unknown Extension %u")); ext_tree = proto_item_add_subtree(ti, ett_a11_ext); proto_tree_add_item(ext_tree, hf_a11_ext_type, tvb, offset, 1, ext_type); offset++; if (ext_type == SS_EXT) { proto_tree_add_uint(ext_tree, hf_a11_ext_len, tvb, offset, 1, ext_len); offset++; } else if(ext_type == CVSE_EXT || ext_type == OLD_CVSE_EXT) { offset++; proto_tree_add_uint(ext_tree, hf_a11_ext_len, tvb, offset, 2, ext_len); offset+=2; } else if (ext_type != GEN_AUTH_EXT) { /* Another nasty hack since GEN_AUTH_EXT broke everything */ proto_tree_add_uint(ext_tree, hf_a11_ext_len, tvb, offset, 1, ext_len); offset++; } switch(ext_type) { case SS_EXT: proto_tree_add_item(ext_tree, hf_a11_ses_ptype, tvb, offset, 2, FALSE); proto_tree_add_item(ext_tree, hf_a11_ses_key, tvb, offset+2, 4, FALSE); proto_tree_add_item(ext_tree, hf_a11_ses_mnsrid, tvb, offset+8, 2, FALSE); proto_tree_add_item(ext_tree, hf_a11_ses_msid_type, tvb, offset+10, 2, FALSE); proto_tree_add_item(ext_tree, hf_a11_ses_msid_len, tvb, offset+12, 1, FALSE); proto_tree_add_item(ext_tree, hf_a11_ses_msid, tvb, offset+13, ext_len-13, FALSE); break; 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_a11_aext_spi, tvb, offset, 4, FALSE); proto_tree_add_item(ext_tree, hf_a11_aext_auth, tvb, offset+4, ext_len-4, FALSE); break; case MN_NAI_EXT: proto_tree_add_item(ext_tree, hf_a11_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_a11_ext_stype, tvb, offset, 1, ext_subtype); offset++; proto_tree_add_uint(ext_tree, hf_a11_ext_len, tvb, offset, 2, ext_len); offset+=2; /* SPI */ proto_tree_add_item(ext_tree, hf_a11_aext_spi, tvb, offset, 4, FALSE); /* Key */ proto_tree_add_item(ext_tree, hf_a11_aext_auth, tvb, offset + 4, ext_len - 4, FALSE); break; case OLD_CVSE_EXT: /* RFC 3115 */ case CVSE_EXT: /* RFC 3115 */ proto_tree_add_item(ext_tree, hf_a11_vse_vid, tvb, offset, 4, FALSE); proto_tree_add_item(ext_tree, hf_a11_vse_apptype, tvb, offset+4, 2, FALSE); apptype = tvb_get_ntohs(tvb, offset+4); if(apptype == 0x0101) { if (tvb_reported_length_remaining(tvb, offset) > 0) { dissect_a11_radius(tvb, offset+6, ext_tree, ext_len + hdrLen - 8); } } break; case OLD_NVSE_EXT: /* RFC 3115 */ case NVSE_EXT: /* RFC 3115 */ proto_tree_add_item(ext_tree, hf_a11_vse_vid, tvb, offset+2, 4, FALSE); proto_tree_add_item(ext_tree, hf_a11_vse_apptype, tvb, offset+6, 2, FALSE); apptype = tvb_get_ntohs(tvb, offset+6); switch(apptype) { case 0x0401: proto_tree_add_item(ext_tree, hf_a11_vse_panid, tvb, offset+8, 5, FALSE); proto_tree_add_item(ext_tree, hf_a11_vse_canid, tvb, offset+13, 5, FALSE); break; case 0x0501: proto_tree_add_item(ext_tree, hf_a11_vse_ppaddr, tvb, offset+8, 4, FALSE); break; case 0x0601: proto_tree_add_item(ext_tree, hf_a11_vse_dormant, tvb, offset+8, 2, FALSE); break; case 0x0701: proto_tree_add_item(ext_tree, hf_a11_vse_code, tvb, offset+8, 1, FALSE); break; case 0x0801: proto_tree_add_item(ext_tree, hf_a11_vse_pdit, tvb, offset+8, 1, FALSE); break; case 0x0901: proto_tree_add_item(ext_tree, hf_a11_vse_srvopt, tvb, offset+8, 2, FALSE); proto_tree_add_item(ext_tree, hf_a11_vse_mnsrid, tvb, offset+10, 2, FALSE); break; } break; 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_a11_ext, tvb, offset, ext_len, FALSE); break; } /* ext type */ offset += ext_len; } /* while data remaining */ } /* dissect_a11_extensions */ /* Code to actually dissect the packets */ static int dissect_a11( 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 *a11_tree=NULL; proto_item *tf; proto_tree *flags_tree; guint8 type; guint8 flags; nstime_t ident_time; size_t offset=0; if (!tvb_bytes_exist(tvb, offset, 1)) return 0; /* not enough data to check message type */ type = tvb_get_guint8(tvb, offset); if (match_strval(type, a11_types) == NULL) return 0; /* not a known message type */ /* 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, "3GPP2 A11"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); 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_a11, tvb, offset, -1, FALSE); a11_tree = proto_item_add_subtree(ti, ett_a11); /* type */ proto_tree_add_uint(a11_tree, hf_a11_type, tvb, offset, 1, type); offset++; /* flags */ flags = tvb_get_guint8(tvb, offset); tf = proto_tree_add_uint(a11_tree, hf_a11_flags, tvb, offset, 1, flags); flags_tree = proto_item_add_subtree(tf, ett_a11_flags); proto_tree_add_boolean(flags_tree, hf_a11_s, tvb, offset, 1, flags); proto_tree_add_boolean(flags_tree, hf_a11_b, tvb, offset, 1, flags); proto_tree_add_boolean(flags_tree, hf_a11_d, tvb, offset, 1, flags); proto_tree_add_boolean(flags_tree, hf_a11_m, tvb, offset, 1, flags); proto_tree_add_boolean(flags_tree, hf_a11_g, tvb, offset, 1, flags); proto_tree_add_boolean(flags_tree, hf_a11_v, tvb, offset, 1, flags); proto_tree_add_boolean(flags_tree, hf_a11_t, tvb, offset, 1, flags); offset++; /* lifetime */ proto_tree_add_item(a11_tree, hf_a11_life, tvb, offset, 2, FALSE); offset +=2; /* home address */ proto_tree_add_item(a11_tree, hf_a11_homeaddr, tvb, offset, 4, FALSE); offset += 4; /* home agent address */ proto_tree_add_item(a11_tree, hf_a11_haaddr, tvb, offset, 4, FALSE); offset += 4; /* Care of Address */ proto_tree_add_item(a11_tree, hf_a11_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(a11_tree, hf_a11_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_a11, tvb, offset, -1, FALSE); a11_tree = proto_item_add_subtree(ti, ett_a11); /* Type */ proto_tree_add_uint(a11_tree, hf_a11_type, tvb, offset, 1, type); offset++; /* Reply Code */ proto_tree_add_item(a11_tree, hf_a11_code, tvb, offset, 1, FALSE); offset++; /* Registration Lifetime */ proto_tree_add_item(a11_tree, hf_a11_life, tvb, offset, 2, FALSE); offset += 2; /* Home address */ proto_tree_add_item(a11_tree, hf_a11_homeaddr, tvb, offset, 4, FALSE); offset += 4; /* Home Agent Address */ proto_tree_add_item(a11_tree, hf_a11_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(a11_tree, hf_a11_ident, tvb, offset, 8, &ident_time); offset += 8; } /* if tree */ break; case REGISTRATION_UPDATE: if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO,"Reg Update: HAddr=%s HAAddr=%s", ip_to_str(tvb_get_ptr(tvb, 4, 4)), ip_to_str(tvb_get_ptr(tvb,8,4))); if (tree) { /* Add Subtree */ ti = proto_tree_add_item(tree, proto_a11, tvb, offset, -1, FALSE); a11_tree = proto_item_add_subtree(ti, ett_a11); /* Type */ proto_tree_add_uint(a11_tree, hf_a11_type, tvb, offset, 1, type); offset++; /* Reserved */ offset+=3; /* Home address */ proto_tree_add_item(a11_tree, hf_a11_homeaddr, tvb, offset, 4, FALSE); offset += 4; /* Home Agent Address */ proto_tree_add_item(a11_tree, hf_a11_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(a11_tree, hf_a11_ident, tvb, offset, 8, &ident_time); offset += 8; } /* if tree */ break; case REGISTRATION_ACK: if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "Reg Ack: HAddr=%s Status=%u", ip_to_str(tvb_get_ptr(tvb, 4, 4)), tvb_get_guint8(tvb,3)); if (tree) { /* Add Subtree */ ti = proto_tree_add_item(tree, proto_a11, tvb, offset, -1, FALSE); a11_tree = proto_item_add_subtree(ti, ett_a11); /* Type */ proto_tree_add_uint(a11_tree, hf_a11_type, tvb, offset, 1, type); offset++; /* Reserved */ offset+=2; /* Ack Status */ proto_tree_add_item(a11_tree, hf_a11_status, tvb, offset, 1, FALSE); offset++; /* Home address */ proto_tree_add_item(a11_tree, hf_a11_homeaddr, tvb, offset, 4, FALSE); offset += 4; /* Care of Address */ proto_tree_add_item(a11_tree, hf_a11_coa, 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(a11_tree, hf_a11_ident, tvb, offset, 8, &ident_time); offset += 8; } /* if tree */ break; case SESSION_UPDATE: /* IOS4.3 */ if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO,"Ses Update: HAddr=%s HAAddr=%s", ip_to_str(tvb_get_ptr(tvb, 4, 4)), ip_to_str(tvb_get_ptr(tvb,8,4))); if (tree) { /* Add Subtree */ ti = proto_tree_add_item(tree, proto_a11, tvb, offset, -1, FALSE); a11_tree = proto_item_add_subtree(ti, ett_a11); /* Type */ proto_tree_add_uint(a11_tree, hf_a11_type, tvb, offset, 1, type); offset++; /* Reserved */ offset+=3; /* Home address */ proto_tree_add_item(a11_tree, hf_a11_homeaddr, tvb, offset, 4, FALSE); offset += 4; /* Home Agent Address */ proto_tree_add_item(a11_tree, hf_a11_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(a11_tree, hf_a11_ident, tvb, offset, 8, &ident_time); offset += 8; } /* if tree */ break; case SESSION_ACK: /* IOS4.3 */ if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "Ses Upd Ack: HAddr=%s Status=%u", ip_to_str(tvb_get_ptr(tvb, 4, 4)), tvb_get_guint8(tvb,3)); if (tree) { /* Add Subtree */ ti = proto_tree_add_item(tree, proto_a11, tvb, offset, -1, FALSE); a11_tree = proto_item_add_subtree(ti, ett_a11); /* Type */ proto_tree_add_uint(a11_tree, hf_a11_type, tvb, offset, 1, type); offset++; /* Reserved */ offset+=2; /* Ack Status */ proto_tree_add_item(a11_tree, hf_a11_status, tvb, offset, 1, FALSE); offset++; /* Home address */ proto_tree_add_item(a11_tree, hf_a11_homeaddr, tvb, offset, 4, FALSE); offset += 4; /* Care of Address */ proto_tree_add_item(a11_tree, hf_a11_coa, 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(a11_tree, hf_a11_ident, tvb, offset, 8, &ident_time); offset += 8; } /* if tree */ break; } /* End switch */ if (tree) { if (tvb_reported_length_remaining(tvb, offset) > 0) dissect_a11_extensions(tvb, offset, a11_tree); } return tvb_length(tvb); } /* dissect_a11 */ /* Register the protocol with Ethereal */ void proto_register_a11(void) { /* Setup list of header fields */ static hf_register_info hf[] = { { &hf_a11_type, { "Message Type", "a11.type", FT_UINT8, BASE_DEC, VALS(a11_types), 0, "A11 Message type.", HFILL } }, { &hf_a11_flags, {"Flags", "a11.flags", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL} }, { &hf_a11_s, {"Simultaneous Bindings", "a11.s", FT_BOOLEAN, 8, NULL, 128, "Simultaneous Bindings Allowed", HFILL } }, { &hf_a11_b, {"Broadcast Datagrams", "a11.b", FT_BOOLEAN, 8, NULL, 64, "Broadcast Datagrams requested", HFILL } }, { &hf_a11_d, { "Co-lcated Care-of Address", "a11.d", FT_BOOLEAN, 8, NULL, 32, "MN using Co-located Care-of address", HFILL } }, { &hf_a11_m, {"Minimal Encapsulation", "a11.m", FT_BOOLEAN, 8, NULL, 16, "MN wants Minimal encapsulation", HFILL } }, { &hf_a11_g, {"GRE", "a11.g", FT_BOOLEAN, 8, NULL, 8, "MN wants GRE encapsulation", HFILL } }, { &hf_a11_v, { "Van Jacobson", "a11.v", FT_BOOLEAN, 8, NULL, 4, "Van Jacobson", HFILL } }, { &hf_a11_t, { "Reverse Tunneling", "a11.t", FT_BOOLEAN, 8, NULL, 2, "Reverse tunneling requested", HFILL } }, { &hf_a11_code, { "Reply Code", "a11.code", FT_UINT8, BASE_DEC, VALS(a11_reply_codes), 0, "A11 Registration Reply code.", HFILL } }, { &hf_a11_status, { "Reply Status", "a11.ackstat", FT_UINT8, BASE_DEC, VALS(a11_ack_status), 0, "A11 Registration Ack Status.", HFILL } }, { &hf_a11_life, { "Lifetime", "a11.life", FT_UINT16, BASE_DEC, NULL, 0, "A11 Registration Lifetime.", HFILL } }, { &hf_a11_homeaddr, { "Home Address", "a11.homeaddr", FT_IPv4, BASE_NONE, NULL, 0, "Mobile Node's home address.", HFILL } }, { &hf_a11_haaddr, { "Home Agent", "a11.haaddr", FT_IPv4, BASE_NONE, NULL, 0, "Home agent IP Address.", HFILL } }, { &hf_a11_coa, { "Care of Address", "a11.coa", FT_IPv4, BASE_NONE, NULL, 0, "Care of Address.", HFILL } }, { &hf_a11_ident, { "Identification", "a11.ident", FT_ABSOLUTE_TIME, BASE_NONE, NULL, 0, "MN Identification.", HFILL } }, { &hf_a11_ext_type, { "Extension Type", "a11.ext.type", FT_UINT8, BASE_DEC, VALS(a11_ext_types), 0, "Mobile IP Extension Type.", HFILL } }, { &hf_a11_ext_stype, { "Gen Auth Ext SubType", "a11.ext.auth.subtype", FT_UINT8, BASE_DEC, VALS(a11_ext_stypes), 0, "Mobile IP Auth Extension Sub Type.", HFILL } }, { &hf_a11_ext_len, { "Extension Length", "a11.ext.len", FT_UINT16, BASE_DEC, NULL, 0, "Mobile IP Extension Length.", HFILL } }, { &hf_a11_ext, { "Extension", "a11.extension", FT_BYTES, BASE_HEX, NULL, 0, "Extension", HFILL } }, { &hf_a11_aext_spi, { "SPI", "a11.auth.spi", FT_UINT32, BASE_HEX, NULL, 0, "Authentication Header Security Parameter Index.", HFILL } }, { &hf_a11_aext_auth, { "Authenticator", "a11.auth.auth", FT_BYTES, BASE_NONE, NULL, 0, "Authenticator.", HFILL } }, { &hf_a11_next_nai, { "NAI", "a11.nai", FT_STRING, BASE_NONE, NULL, 0, "NAI", HFILL } }, { &hf_a11_ses_key, { "Key", "a11.ext.key", FT_UINT32, BASE_HEX, NULL, 0, "Session Key.", HFILL } }, { &hf_a11_ses_mnsrid, { "MNSR-ID", "a11.ext.mnsrid", FT_UINT16, BASE_HEX, NULL, 0, "MNSR-ID", HFILL } }, { &hf_a11_ses_msid_type, { "MSID Type", "a11.ext.msid_type", FT_UINT16, BASE_DEC, NULL, 0, "MSID Type.", HFILL } }, { &hf_a11_ses_msid_len, { "MSID Length", "a11.ext.msid_len", FT_UINT8, BASE_DEC, NULL, 0, "MSID Lengthu.", HFILL } }, { &hf_a11_ses_msid, { "MSID(BCD)", "a11.ext.msid", FT_BYTES, BASE_HEX, NULL, 0, "MSID(BCD).", HFILL } }, { &hf_a11_ses_ptype, { "Protocol Type", "a11.ext.ptype", FT_UINT16, BASE_HEX, NULL, 0, "Protocol Type.", HFILL } }, { &hf_a11_vse_vid, { "Vendor ID", "a11.ext.vid", FT_UINT32, BASE_HEX, NULL, 0, "Vendor ID.", HFILL } }, { &hf_a11_vse_apptype, { "Application Type", "a11.ext.apptype", FT_UINT8, BASE_HEX, VALS(a11_ext_app), 0, "Application Type.", HFILL } }, { &hf_a11_vse_ppaddr, { "Anchor P-P Address", "a11.ext.ppaddr", FT_IPv4, BASE_NONE, NULL, 0, "Anchor P-P Address.", HFILL } }, { &hf_a11_vse_dormant, { "All Dormant Indicator", "a11.ext.dormant", FT_UINT16, BASE_HEX, VALS(a11_ext_dormant), 0, "All Dormant Indicator.", HFILL } }, { &hf_a11_vse_code, { "Reply Code", "a11.ext.code", FT_UINT8, BASE_DEC, VALS(a11_reply_codes), 0, "PDSN Code.", HFILL } }, { &hf_a11_vse_pdit, { "PDSN Code", "a11.ext.code", FT_UINT8, BASE_HEX, VALS(a11_ext_nvose_pdsn_code), 0, "PDSN Code.", HFILL } }, { &hf_a11_vse_srvopt, { "Service Option", "a11.ext.srvopt", FT_UINT16, BASE_HEX, VALS(a11_ext_nvose_srvopt), 0, "Servie Option.", HFILL } }, { &hf_a11_vse_mnsrid, { "MNSRID", "a11.ext.mnsrid", FT_UINT16, BASE_HEX, NULL, 0, "MNSRID", HFILL } }, { &hf_a11_vse_panid, { "PANID", "a11.ext.panid", FT_BYTES, BASE_HEX, NULL, 0, "PANID", HFILL } }, { &hf_a11_vse_canid, { "CANID", "a11.ext.canid", FT_BYTES, BASE_HEX, NULL, 0, "CANID", HFILL } }, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_a11, &ett_a11_flags, &ett_a11_ext, &ett_a11_exts, &ett_a11_radius, &ett_a11_radiuses, }; /* Register the protocol name and description */ proto_a11 = proto_register_protocol("3GPP2 A11", "3GPP2 A11", "a11"); /* Register the dissector by name */ new_register_dissector("a11", dissect_a11, proto_a11); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_a11, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); } void proto_reg_handoff_a11(void) { dissector_handle_t a11_handle; a11_handle = find_dissector("a11"); dissector_add("udp.port", UDP_PORT_3GA11, a11_handle); }