/* packet-bootp.c * Routines for BOOTP/DHCP packet disassembly * Copyright 1998, Gilbert Ramirez * Copyright 2004, Thomas Anders * * $Id$ * * The information used comes from: * RFC 951: Bootstrap Protocol * RFC 1497: BOOTP extensions * RFC 1542: Clarifications and Extensions for the Bootstrap Protocol * RFC 2131: Dynamic Host Configuration Protocol * RFC 2132: DHCP Options and BOOTP Vendor Extensions * RFC 2241: DHCP Options for Novell Directory Services * RFC 2242: NetWare/IP Domain Name and Information * RFC 2489: Procedure for Defining New DHCP Options * RFC 2610: DHCP Options for Service Location Protocol * RFC 3046: DHCP Relay Agent Information Option * RFC 3118: Authentication for DHCP Messages * RFC 3203: DHCP reconfigure extension * RFC 3495: DHCP Option (122) for CableLabs Client Configuration * RFC 3594: PacketCable Security Ticket Control Sub-Option (122.9) * RFC 3442: Classless Static Route Option for DHCP version 4 * RFC 3825: Dynamic Host Configuration Protocol Option for Coordinate-based Location Configuration Information * RFC 3942: Reclassifying DHCPv4 Options * RFC 4243: Vendor-Specific Information Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option * RFC 4776: Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information * RFC 5223: Discovering Location-to-Service Translation (LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP) * RFC 5417: CAPWAP Access Controller DHCP Option * draft-ietf-dhc-fqdn-option-07.txt * BOOTP and DHCP Parameters * http://www.iana.org/assignments/bootp-dhcp-parameters * DOCSIS(TM) 2.0 Radio Frequency Interface Specification * http://www.cablemodem.com/downloads/specs/CM-SP-RFI2.0-I10-051209.pdf * PacketCable(TM) 1.0 MTA Device Provisioning Specification * http://www.packetcable.com/downloads/specs/PKT-SP-PROV-I11-050812.pdf * http://www.cablelabs.com/specifications/archives/PKT-SP-PROV-I05-021127.pdf (superseded by above) * PacketCable(TM) 1.5 MTA Device Provisioning Specification * http://www.packetcable.com/downloads/specs/PKT-SP-PROV1.5-I02-050812.pdf * CableHome(TM) 1.1 Specification * http://www.cablelabs.com/projects/cablehome/downloads/specs/CH-SP-CH1.1-I11-060407.pdf * DSL Forum TR-111 * http://www.dslforum.org/techwork/tr/TR-111.pdf * * Wireshark - 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. */ /* * Some of the development of the BOOTP/DHCP protocol decoder was sponsored by * Cable Television Laboratories, Inc. ("CableLabs") based upon proprietary * CableLabs' specifications. Your license and use of this protocol decoder * does not mean that you are licensed to use the CableLabs' * specifications. If you have questions about this protocol, contact * jf.mule [AT] cablelabs.com or c.stuart [AT] cablelabs.com for additional * information. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include "packet-arp.h" #include "packet-dns.h" /* for get_dns_name() */ #include #include #include #include #include #include static int bootp_dhcp_tap = -1; static int proto_bootp = -1; static int hf_bootp_type = -1; static int hf_bootp_hw_type = -1; static int hf_bootp_hw_len = -1; static int hf_bootp_hops = -1; static int hf_bootp_id = -1; static int hf_bootp_secs = -1; static int hf_bootp_flags = -1; static int hf_bootp_flags_broadcast = -1; static int hf_bootp_flags_reserved = -1; static int hf_bootp_ip_client = -1; static int hf_bootp_ip_your = -1; static int hf_bootp_ip_server = -1; static int hf_bootp_ip_relay = -1; static int hf_bootp_hw_addr = -1; static int hf_bootp_hw_addr_padding = -1; static int hf_bootp_hw_ether_addr = -1; static int hf_bootp_server = -1; static int hf_bootp_file = -1; static int hf_bootp_cookie = -1; static int hf_bootp_vendor = -1; static int hf_bootp_dhcp = -1; static int hf_bootp_fqdn_s = -1; static int hf_bootp_fqdn_o = -1; static int hf_bootp_fqdn_e = -1; static int hf_bootp_fqdn_n = -1; static int hf_bootp_fqdn_mbz = -1; static int hf_bootp_fqdn_rcode1 = -1; static int hf_bootp_fqdn_rcode2 = -1; static int hf_bootp_fqdn_name = -1; static int hf_bootp_fqdn_asciiname = -1; static int hf_bootp_pkt_mtacap_len = -1; static int hf_bootp_docsis_cmcap_len = -1; static int hf_bootp_alu_vid = -1; static int hf_bootp_alu_tftp1 = -1; static int hf_bootp_alu_tftp2 = -1; static int hf_bootp_client_identifier_uuid = -1; static int hf_bootp_client_network_id_major_ver = -1; static int hf_bootp_client_network_id_minor_ver = -1; static int hf_bootp_option_type = -1; static int hf_bootp_option_length = -1; static int hf_bootp_option_value = -1; static gint ett_bootp = -1; static gint ett_bootp_flags = -1; static gint ett_bootp_option = -1; static gint ett_bootp_fqdn = -1; static const char *pref_optionstring = ""; /* RFC3825decoder error codes of the conversion function */ #define RFC3825_NOERROR 0 #define RFC3825_LATITUDE_OUTOFRANGE 1 #define RFC3825_LATITUDE_UNCERTAINTY_OUTOFRANGE 2 #define RFC3825_LONGITUDE_OUTOFRANGE 3 #define RFC3825_LONGITUDE_UNCERTAINTY_OUTOFRANGE 4 #define RFC3825_ALTITUDE_OUTOFRANGE 5 #define RFC3825_ALTITUDE_UNCERTAINTY_OUTOFRANGE 6 #define RFC3825_ALTITUDE_TYPE_OUTOFRANGE 7 #define RFC3825_DATUM_TYPE_OUTOFRANGE 8 struct rfc3825_location_fixpoint_t { gint64 latitude; /* latitude in degrees, allowed range from -90deg to 90deg. Fixpoint A(8,25) with 34 bits */ guint8 latitude_res; /* the resolution of the latitude in bits, allowed range is from 0 to 34. 6 bits. */ gint64 longitude; /* longitude in degrees, range from -180deg to 180deg. Fixpoint A(8,25) with 34 bits */ guint8 longitude_res; /* the resolution of the longitude in bits, allowed range is from 0 to 34. 6 bits. */ gint32 altitude; /* the altitude, 30 bits. Depending on alt_type this are meters or floors, no range limit. altitude_type==1: A(13,8) with 22 bits altitude_type==2: A(13,8) with 22 bits */ guint8 altitude_res; /* the resolution of the altitude in bits, allowed range is from 0 to 30. 6 bits. altitude_type==1: any value between 0 and 30 altitude_type==2: either 0 (floor unknown) or 30 */ guint8 altitude_type; /* the type of the altitude, 4 bits. allowed values are: 0: unknown 1: altitude in meters 2: altitude in floors */ guint8 datum_type; /* the map datum used for the coordinates. 8 bits. All values are allowed although currently only the following ones are defined: 1: WGS84 2: NAD83/NAVD88 3: NAD83/MLLW */ }; /* The rfc3825_location_decimal_t structure holds the location parameters * in decimal (floating point) format. */ struct rfc3825_location_decimal_t { double latitude; /* latitude in degrees, allowed range from -90deg to 90deg */ double latitude_res; /* the uncertainty of the latitude in grad, "0.01" means +-0.01deg from the altitude. During conversion this will be rounded to next smaller value which can be respresented in fixpoint arithmetic */ double longitude; /* longitude in degrees, range from -180deg to 180deg */ double longitude_res; /* the uncertainty of the longitude in grad, "0.01" means +-0.01deg from the longitude. During conversion this will be rounded to next smaller value which can be respresented in fixpoint arithmetic */ double altitude; /* the altitude, depending on alt_type this are meters or floors, no range limit */ double altitude_res; /* the uncertainty of the altitude in either: - altitude-type=meters: "10" means 10 meters which means +-10 meters from the altitude - altitude-type=floors: either 0 (unknown) or 30 (exact) */ int altitude_type; /* the type of the altitude, allowed values are 0: unknown 1: altitude in meters 2: altitude in floors */ int datum_type; /* the map datum used for the coordinates. All values are allowed although currently only the following ones are defined: 1: WGS84 2: NAD83/NAVD88 3: NAD83/MLLW */ }; /* converts fixpoint presentation into decimal presentation also converts values which are out of range to allow decoding of received data */ static int rfc3825_fixpoint_to_decimal(struct rfc3825_location_fixpoint_t *fixpoint, struct rfc3825_location_decimal_t *decimal); /* decodes the LCI string received from DHCP into the fixpoint values */ static void rfc3825_lci_to_fixpoint(const unsigned char lci[16], struct rfc3825_location_fixpoint_t *fixpoint); /* Map Datum Types used for the coordinates (RFC 3825) */ static const value_string map_datum_type_values[] = { { 1, "WGS 84" }, { 2, "NAD83 (NAVD88)" }, { 3, "NAD83 (MLLW)" }, { 0, NULL } }; /* Altitude Types used for the coordinates (RFC 3825) */ static const value_string altitude_type_values[] = { { 1, "Meters" }, { 2, "Floors" }, { 0, NULL } }; /* Error Types for RFC 3825 coordinate location decoding */ static const value_string rfc3825_error_types[] = { {1, "Latitude is out of range [-90,90]"}, {2, "Latitude Uncertainty is out of range [0,90]"}, {3, "Longitude is out of range [-180,180]"}, {4, "Longitude Uncertainty is out of range [0,180]"}, {5, "Altitude is out of range [-(2^21),(2^21)-1]"}, {6, "Altitude Uncertainty is out of range [0,2^20]"}, {7, "Altitude Type is out of range [0,2]"}, {8, "Datum is out of range [1,3]"}, {0, NULL } }; /* Civic Address What field (RFC 4776) */ static const value_string civic_address_what_values[] = { { 0, "Location of the DHCP server" }, { 1, "Location of the network element believed to be closest to the client" }, { 2, "Location of the client"}, { 0, NULL} }; /* Civic Address Type field (RFC 4119, RFC 4776, RFC 5139) */ static const value_string civic_address_type_values[] = { { 0, "Language" }, { 1, "A1" }, { 2, "A2" }, { 3, "A3" }, { 4, "A4" }, { 5, "A5" }, { 6, "A6" }, { 16, "PRD (Leading street direction)" }, { 17, "POD (Trailing street suffix)" }, { 18, "STS (Street suffix)" }, { 19, "HNO (House number)" }, { 20, "HNS (House number suffix)" }, { 21, "LMK (Landmark or vanity address)" }, { 22, "LOC (Additional location information)" }, { 23, "NAM" }, { 24, "PC (Postal/ZIP code)" }, { 25, "BLD (Building)" }, { 26, "UNIT" }, { 27, "FLR (Floor)" }, { 28, "ROOM" }, { 29, "PLC (Place-type)" }, { 30, "PCN (Postal community name)" }, { 31, "POBOX" }, { 32, "ADDCODE (Additional Code)" }, { 33, "SEAT" }, { 34, "RD (Primary road or street)" }, { 35, "RDSEC (Road section)" }, { 36, "RDBR (Road branch)" }, { 37, "RDSUBBR (Road sub-branch)" }, { 38, "PRM (Road pre-modifier)" }, { 39, "POM (Road post-modifier" }, { 128, "Script" }, { 0, NULL } }; static gboolean novell_string = FALSE; #define UDP_PORT_BOOTPS 67 #define UDP_PORT_BOOTPC 68 #define BOOTP_BC 0x8000 #define BOOTP_MBZ 0x7FFF /* FQDN stuff */ #define F_FQDN_S 0x01 #define F_FQDN_O 0x02 #define F_FQDN_E 0x04 #define F_FQDN_N 0x08 #define F_FQDN_MBZ 0xf0 static const true_false_string tfs_fqdn_s = { "Server", "Client" }; static const true_false_string tfs_fqdn_o = { "Override", "No override" }; static const true_false_string tfs_fqdn_e = { "Binary encoding", "ASCII encoding" }; static const true_false_string tfs_fqdn_n = { "No server updates", "Some server updates" }; enum field_type { special, none, presence, ipv4, /* single IPv4 address */ ipv4_list, /* list of IPv4 addresses */ string, bytes, opaque, val_boolean, val_u_byte, val_u_short, val_u_short_list, val_u_le_short, val_u_long, time_in_secs, fqdn, ipv4_or_fqdn }; struct opt_info { const char *text; enum field_type ftype; const void *data; }; static const true_false_string flag_set_broadcast = { "Broadcast", "Unicast" }; /* PacketCable/DOCSIS definitions */ #define PACKETCABLE_MTA_CAP10 "pktc1.0:" #define PACKETCABLE_MTA_CAP15 "pktc1.5:" #define PACKETCABLE_CM_CAP11 "docsis1.1:" #define PACKETCABLE_CM_CAP20 "docsis2.0:" #define PACKETCABLE_CCC_I05 1 #define PACKETCABLE_CCC_DRAFT5 2 #define PACKETCABLE_CCC_RFC_3495 3 static enum_val_t pkt_ccc_protocol_versions[] = { { "ccc_i05", "PKT-SP-PROV-I05-021127", PACKETCABLE_CCC_I05 }, { "ccc_draft_5", "IETF Draft 5", PACKETCABLE_CCC_DRAFT5 }, { "rfc_3495", "RFC 3495", PACKETCABLE_CCC_RFC_3495 }, { NULL, NULL, 0 } }; static gint pkt_ccc_protocol_version = PACKETCABLE_CCC_RFC_3495; static guint pkt_ccc_option = 122; static int dissect_vendor_pxeclient_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend); static int dissect_vendor_cablelabs_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend); static int dissect_netware_ip_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend); static int dissect_vendor_tr111_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend); static int bootp_dhcp_decode_agent_info(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend); static void dissect_packetcable_mta_cap(proto_tree *v_tree, tvbuff_t *tvb, int voff, int len); static void dissect_docsis_cm_cap(proto_tree *v_tree, tvbuff_t *tvb, int voff, int len); static int dissect_packetcable_i05_ccc(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend); static int dissect_packetcable_ietf_ccc(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend, int revision); #define OPT53_DISCOVER "Discover" /* http://www.iana.org/assignments/bootp-dhcp-parameters */ static const value_string opt53_text[] = { { 1, OPT53_DISCOVER }, { 2, "Offer" }, { 3, "Request" }, { 4, "Decline" }, { 5, "ACK" }, { 6, "NAK" }, { 7, "Release" }, { 8, "Inform" }, { 9, "Force Renew" }, { 10, "Lease query" }, /* RFC4388 */ { 11, "Lease Unassigned" }, /* RFC4388 */ { 12, "Lease Unknown" }, /* RFC4388 */ { 13, "Lease Active" }, /* RFC4388 */ /* draft-ietf-dhc-leasequery-09.txt { 13, "Lease query" }, */ { 14, "Lease known" }, { 15, "Lease unknown" }, { 16, "Lease active" }, { 17, "Unimplemented" }, { 0, NULL } }; /* DHCP Authentication protocols */ #define AUTHEN_PROTO_CONFIG_TOKEN 0 #define AUTHEN_PROTO_DELAYED_AUTHEN 1 /* DHCP Authentication algorithms for delayed authentication */ #define AUTHEN_DELAYED_ALGO_HMAC_MD5 1 /* DHCP Authentication Replay Detection Methods */ #define AUTHEN_RDM_MONOTONIC_COUNTER 0x00 /* DHCP Option Overload (option code 52) */ #define OPT_OVERLOAD_FILE 1 #define OPT_OVERLOAD_SNAME 2 #define OPT_OVERLOAD_BOTH 3 /* Server name and boot file offsets and lengths */ #define SERVER_NAME_OFFSET 44 #define SERVER_NAME_LEN 64 #define FILE_NAME_OFFSET 108 #define FILE_NAME_LEN 128 #define VENDOR_INFO_OFFSET 236 static const true_false_string toggle_tfs = { "Enabled", "Disabled" }; static const true_false_string yes_no_tfs = { "Yes", "No" }; static const value_string bootp_nbnt_vals[] = { {0x1, "B-node" }, {0x2, "P-node" }, {0x4, "M-node" }, {0x8, "H-node" }, {0, NULL } }; static const value_string bootp_client_arch[] = { { 0x0000, "IA x86 PC" }, { 0x0001, "NEC/PC98" }, { 0x0002, "IA64 PC" }, { 0x0003, "DEC Alpha" }, { 0x0004, "ArcX86" }, { 0x0005, "Intel Lean Client" }, { 0, NULL } }; /* bootp options administration */ #define BOOTP_OPT_NUM 256 /* Re-define structure. Values to be upated by bootp_init_protocol */ static struct opt_info bootp_opt[BOOTP_OPT_NUM]; static struct opt_info default_bootp_opt[BOOTP_OPT_NUM] = { /* 0 */ { "Padding", none, NULL }, /* 1 */ { "Subnet Mask", ipv4, NULL }, /* 2 */ { "Time Offset", time_in_secs, NULL }, /* 3 */ { "Router", ipv4_list, NULL }, /* 4 */ { "Time Server", ipv4_list, NULL }, /* 5 */ { "Name Server", ipv4_list, NULL }, /* 6 */ { "Domain Name Server", ipv4_list, NULL }, /* 7 */ { "Log Server", ipv4_list, NULL }, /* 8 */ { "Quotes Server", ipv4_list, NULL }, /* 9 */ { "LPR Server", ipv4_list, NULL }, /* 10 */ { "Impress Server", ipv4_list, NULL }, /* 11 */ { "Resource Location Server", ipv4_list, NULL }, /* 12 */ { "Host Name", string, NULL }, /* 13 */ { "Boot File Size", val_u_short, NULL }, /* 14 */ { "Merit Dump File", string, NULL }, /* 15 */ { "Domain Name", string, NULL }, /* 16 */ { "Swap Server", ipv4, NULL }, /* 17 */ { "Root Path", string, NULL }, /* 18 */ { "Extensions Path", string, NULL }, /* 19 */ { "IP Forwarding", val_boolean, TFS(&toggle_tfs) }, /* 20 */ { "Non-Local Source Routing", val_boolean, TFS(&toggle_tfs) }, /* 21 */ { "Policy Filter", special, NULL }, /* 22 */ { "Maximum Datagram Reassembly Size", val_u_short, NULL }, /* 23 */ { "Default IP Time-to-Live", val_u_byte, NULL }, /* 24 */ { "Path MTU Aging Timeout", time_in_secs, NULL }, /* 25 */ { "Path MTU Plateau Table", val_u_short_list, NULL }, /* 26 */ { "Interface MTU", val_u_short, NULL }, /* 27 */ { "All Subnets are Local", val_boolean, TFS(&yes_no_tfs) }, /* 28 */ { "Broadcast Address", ipv4, NULL }, /* 29 */ { "Perform Mask Discovery", val_boolean, TFS(&toggle_tfs) }, /* 30 */ { "Mask Supplier", val_boolean, TFS(&yes_no_tfs) }, /* 31 */ { "Perform Router Discover", val_boolean, TFS(&toggle_tfs) }, /* 32 */ { "Router Solicitation Address", ipv4, NULL }, /* 33 */ { "Static Route", special, NULL }, /* 34 */ { "Trailer Encapsulation", val_boolean, TFS(&toggle_tfs) }, /* 35 */ { "ARP Cache Timeout", time_in_secs, NULL }, /* 36 */ { "Ethernet Encapsulation", val_boolean, TFS(&toggle_tfs) }, /* 37 */ { "TCP Default TTL", val_u_byte, NULL }, /* 38 */ { "TCP Keepalive Interval", time_in_secs, NULL }, /* 39 */ { "TCP Keepalive Garbage", val_boolean, TFS(&toggle_tfs) }, /* 40 */ { "Network Information Service Domain", string, NULL }, /* 41 */ { "Network Information Service Servers", ipv4_list, NULL }, /* 42 */ { "Network Time Protocol Servers", ipv4_list, NULL }, /* 43 */ { "Vendor-Specific Information", special, NULL }, /* 44 */ { "NetBIOS over TCP/IP Name Server", ipv4_list, NULL }, /* 45 */ { "NetBIOS over TCP/IP Datagram Distribution Name Server", ipv4_list, NULL }, /* 46 */ { "NetBIOS over TCP/IP Node Type", val_u_byte, VALS(bootp_nbnt_vals) }, /* 47 */ { "NetBIOS over TCP/IP Scope", string, NULL }, /* 48 */ { "X Window System Font Server", ipv4_list, NULL }, /* 49 */ { "X Window System Display Manager", ipv4_list, NULL }, /* 50 */ { "Requested IP Address", ipv4, NULL }, /* 51 */ { "IP Address Lease Time", time_in_secs, NULL }, /* 52 */ { "Option Overload", special, NULL }, /* 53 */ { "DHCP Message Type", special, NULL }, /* 54 */ { "DHCP Server Identifier", ipv4, NULL }, /* 55 */ { "Parameter Request List", special, NULL }, /* 56 */ { "Message", string, NULL }, /* 57 */ { "Maximum DHCP Message Size", val_u_short, NULL }, /* 58 */ { "Renewal Time Value", time_in_secs, NULL }, /* 59 */ { "Rebinding Time Value", time_in_secs, NULL }, /* 60 */ { "Vendor class identifier", special, NULL }, /* 61 */ { "Client identifier", special, NULL }, /* 62 */ { "Novell/Netware IP domain", string, NULL }, /* 63 */ { "Novell Options", special, NULL }, /* 64 */ { "Network Information Service+ Domain", string, NULL }, /* 65 */ { "Network Information Service+ Servers", ipv4_list, NULL }, /* 66 */ { "TFTP Server Name", string, NULL }, /* 67 */ { "Bootfile name", string, NULL }, /* 68 */ { "Mobile IP Home Agent", ipv4_list, NULL }, /* 69 */ { "SMTP Server", ipv4_list, NULL }, /* 70 */ { "POP3 Server", ipv4_list, NULL }, /* 71 */ { "NNTP Server", ipv4_list, NULL }, /* 72 */ { "Default WWW Server", ipv4_list, NULL }, /* 73 */ { "Default Finger Server", ipv4_list, NULL }, /* 74 */ { "Default IRC Server", ipv4_list, NULL }, /* 75 */ { "StreetTalk Server", ipv4_list, NULL }, /* 76 */ { "StreetTalk Directory Assistance Server", ipv4_list, NULL }, /* 77 */ { "User Class Information", opaque, NULL }, /* 78 */ { "Directory Agent Information", special, NULL }, /* 79 */ { "Service Location Agent Scope", special, NULL }, /* 80 */ { "Rapid commit", opaque, NULL }, /* 81 */ { "Client Fully Qualified Domain Name", special, NULL }, /* 82 */ { "Agent Information Option", special, NULL }, /* 83 */ { "iSNS [TODO]", opaque, NULL }, /* 84 */ { "Removed/Unassigned", opaque, NULL }, /* 85 */ { "Novell Directory Services Servers", special, NULL }, /* 86 */ { "Novell Directory Services Tree Name", string, NULL }, /* 87 */ { "Novell Directory Services Context", string, NULL }, /* 88 */ { "BCMCS Controller Domain Name [TODO]", opaque, NULL }, /* 89 */ { "BCMCS Controller IPv4 address [TODO]", opaque, NULL }, /* 90 */ { "Authentication", special, NULL }, /* 91 */ { "Client last transaction time [TODO]", opaque, NULL }, /* 92 */ { "associated ip option [TODO]", opaque, NULL }, /* 93 */ { "Client System Architecture", val_u_short, VALS(bootp_client_arch) }, /* 94 */ { "Client Network Device Interface", special, NULL }, /* 95 */ { "LDAP [TODO]", opaque, NULL }, /* 96 */ { "Removed/Unassigend", opaque, NULL }, /* 97 */ { "UUID/GUID-based Client Identifier", special, NULL }, /* 98 */ { "Open Group's User Authentication [TODO]", opaque, NULL }, /* 99 */ { "Civic Addresses Configuration", special, NULL }, /* 100 */ { "PCode [TODO]", opaque, NULL }, /* 101 */ { "TCode [TODO]", opaque, NULL }, /* 102 */ { "Removed/unassigned", opaque, NULL }, /* 103 */ { "Removed/unassigned", opaque, NULL }, /* 104 */ { "Removed/unassigned", opaque, NULL }, /* 105 */ { "Removed/unassigned", opaque, NULL }, /* 106 */ { "Removed/unassigned", opaque, NULL }, /* 107 */ { "Removed/unassigned", opaque, NULL }, /* 108 */ { "Removed/Unassigend", opaque, NULL }, /* 109 */ { "Unassigned", opaque, NULL }, /* 110 */ { "Removed/Uassigend", opaque, NULL }, /* 111 */ { "Unassigned", opaque, NULL }, /* 112 */ { "NetInfo Parent Server Address", ipv4_list, NULL }, /* 113 */ { "NetInfo Parent Server Tag", string, NULL }, /* 114 */ { "URL [TODO]", opaque, NULL }, /* 115 */ { "Removed/Unassigend", opaque, NULL }, /* 116 */ { "DHCP Auto-Configuration [TODO]", opaque, NULL }, /* 117 */ { "Name Service Search [TODO]", opaque, NULL }, /* 118 */ { "Subnet Selection Option", ipv4_list, NULL }, /* 119 */ { "Domain Search [TODO]", opaque, NULL }, /* 120 */ { "SIP Servers [TODO]", opaque, NULL }, /* 121 */ { "Classless Static Route", special, NULL }, /* 122 */ { "CableLabs Client Configuration [TODO]", opaque, NULL }, /* 123 */ { "Coordinate-based Location Configuration", special, NULL }, /* 124 */ { "V-I Vendor Class [TODO]", opaque, NULL }, /* 125 */ { "V-I Vendor-specific Information", special, NULL }, /* 126 */ { "Removed/Unassigned", opaque, NULL }, /* 127 */ { "Removed/Unassigend", opaque, NULL }, /* 128 */ { "DOCSIS full security server IP [TODO]", opaque, NULL }, /* 129 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 130 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 131 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 132 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 133 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 134 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 135 */ { "PXE - undefined (vendor specific)", opaque, NULL }, /* 136 */ { "OPTION_PANA_AGENT [TODO]", opaque, NULL }, /* 137 */ { "LoST Server Domain Name", string, NULL }, /* 138 */ { "CAPWAP Access Controllers", ipv4_list, NULL }, /* 139 */ { "Unassigned", opaque, NULL }, /* 140 */ { "Unassigned", opaque, NULL }, /* 141 */ { "Unassigned", opaque, NULL }, /* 142 */ { "Unassigned", opaque, NULL }, /* 143 */ { "Unassigned", opaque, NULL }, /* 144 */ { "Unassigned", opaque, NULL }, /* 145 */ { "Unassigned", opaque, NULL }, /* 146 */ { "Unassigned", opaque, NULL }, /* 147 */ { "Unassigned", opaque, NULL }, /* 148 */ { "Unassigned", opaque, NULL }, /* 149 */ { "Unassigned", opaque, NULL }, /* 150 */ { "TFTP server address", opaque, NULL }, /* 151 */ { "Unassigned", opaque, NULL }, /* 152 */ { "Unassigned", opaque, NULL }, /* 153 */ { "Unassigned", opaque, NULL }, /* 154 */ { "Unassigned", opaque, NULL }, /* 155 */ { "Unassigned", opaque, NULL }, /* 156 */ { "Unassigned", opaque, NULL }, /* 157 */ { "Unassigned", opaque, NULL }, /* 158 */ { "Unassigned", opaque, NULL }, /* 159 */ { "Unassigned", opaque, NULL }, /* 160 */ { "Unassigned", opaque, NULL }, /* 161 */ { "Unassigned", opaque, NULL }, /* 162 */ { "Unassigned", opaque, NULL }, /* 163 */ { "Unassigned", opaque, NULL }, /* 164 */ { "Unassigned", opaque, NULL }, /* 165 */ { "Unassigned", opaque, NULL }, /* 166 */ { "Unassigned", opaque, NULL }, /* 167 */ { "Unassigned", opaque, NULL }, /* 168 */ { "Unassigned", opaque, NULL }, /* 169 */ { "Unassigned", opaque, NULL }, /* 170 */ { "Unassigned", opaque, NULL }, /* 171 */ { "Unassigned", opaque, NULL }, /* 172 */ { "Unassigned", opaque, NULL }, /* 173 */ { "Unassigned", opaque, NULL }, /* 174 */ { "Unassigned", opaque, NULL }, /* 175 */ { "Etherboot", opaque, NULL }, /* 176 */ { "IP Telephone", opaque, NULL }, /* 177 */ { "Etherboot", opaque, NULL }, /* 178 */ { "Unassigned", opaque, NULL }, /* 179 */ { "Unassigned", opaque, NULL }, /* 180 */ { "Unassigned", opaque, NULL }, /* 181 */ { "Unassigned", opaque, NULL }, /* 182 */ { "Unassigned", opaque, NULL }, /* 183 */ { "Unassigned", opaque, NULL }, /* 184 */ { "Unassigned", opaque, NULL }, /* 185 */ { "Unassigned", opaque, NULL }, /* 186 */ { "Unassigned", opaque, NULL }, /* 187 */ { "Unassigned", opaque, NULL }, /* 188 */ { "Unassigned", opaque, NULL }, /* 189 */ { "Unassigned", opaque, NULL }, /* 190 */ { "Unassigned", opaque, NULL }, /* 191 */ { "Unassigned", opaque, NULL }, /* 192 */ { "Unassigned", opaque, NULL }, /* 193 */ { "Unassigned", opaque, NULL }, /* 194 */ { "Unassigned", opaque, NULL }, /* 195 */ { "Unassigned", opaque, NULL }, /* 196 */ { "Unassigned", opaque, NULL }, /* 197 */ { "Unassigned", opaque, NULL }, /* 198 */ { "Unassigned", opaque, NULL }, /* 199 */ { "Unassigned", opaque, NULL }, /* 200 */ { "Unassigned", opaque, NULL }, /* 201 */ { "Unassigned", opaque, NULL }, /* 202 */ { "Unassigned", opaque, NULL }, /* 203 */ { "Unassigned", opaque, NULL }, /* 204 */ { "Unassigned", opaque, NULL }, /* 205 */ { "Unassigned", opaque, NULL }, /* 206 */ { "Unassigned", opaque, NULL }, /* 207 */ { "Unassigned", opaque, NULL }, /* 208 */ { "PXELINUX Magic", opaque, NULL }, /* 209 */ { "Configuration file", opaque, NULL }, /* 210 */ { "Authentication", special, NULL }, /* Path Prefix rfc5071 */ /* 211 */ { "Reboot Time", opaque, NULL }, /* 212 */ { "Unassigned", opaque, NULL }, /* 213 */ { "Unassigned", opaque, NULL }, /* 214 */ { "Unassigned", opaque, NULL }, /* 215 */ { "Unassigned", opaque, NULL }, /* 216 */ { "Unassigned", opaque, NULL }, /* 217 */ { "Unassigned", opaque, NULL }, /* 218 */ { "Unassigned", opaque, NULL }, /* 219 */ { "Unassigned", opaque, NULL }, /* 220 */ { "Subnet Allocation", opaque, NULL }, /* 221 */ { "Virtual Subnet Selection", opaque, NULL }, /* 222 */ { "Unassigned", opaque, NULL }, /* 223 */ { "Unassigned", opaque, NULL }, /* 224 */ { "Private", opaque, NULL }, /* 225 */ { "Private", opaque, NULL }, /* 226 */ { "Private", opaque, NULL }, /* 227 */ { "Private", opaque, NULL }, /* 228 */ { "Private", opaque, NULL }, /* 229 */ { "Private", opaque, NULL }, /* 230 */ { "Private", opaque, NULL }, /* 231 */ { "Private", opaque, NULL }, /* 232 */ { "Private", opaque, NULL }, /* 233 */ { "Private", opaque, NULL }, /* 234 */ { "Private", opaque, NULL }, /* 235 */ { "Private", opaque, NULL }, /* 236 */ { "Private", opaque, NULL }, /* 237 */ { "Private", opaque, NULL }, /* 238 */ { "Private", opaque, NULL }, /* 239 */ { "Private", opaque, NULL }, /* 240 */ { "Private", opaque, NULL }, /* 241 */ { "Private", opaque, NULL }, /* 242 */ { "Private", opaque, NULL }, /* 243 */ { "Private", opaque, NULL }, /* 244 */ { "Private", opaque, NULL }, /* 245 */ { "Private", opaque, NULL }, /* 246 */ { "Private", opaque, NULL }, /* 247 */ { "Private", opaque, NULL }, /* 248 */ { "Private", opaque, NULL }, /* 249 */ { "Private/Classless Static Route (Microsoft)", special, NULL }, /* 250 */ { "Private", opaque, NULL }, /* 251 */ { "Private", opaque, NULL }, /* 252 */ { "Private/Proxy autodiscovery", string, NULL }, /* 253 */ { "Private", opaque, NULL }, /* 254 */ { "Private", opaque, NULL }, /* 255 */ { "End", opaque, NULL } }; static const char * bootp_get_opt_text(unsigned int idx) { if(idx>=BOOTP_OPT_NUM) return "unknown"; return bootp_opt[idx].text; } static const void * bootp_get_opt_data(unsigned int idx) { if(idx>=BOOTP_OPT_NUM) return NULL; return bootp_opt[idx].data; } static enum field_type bootp_get_opt_ftype(unsigned int idx) { if(idx>=BOOTP_OPT_NUM) return none; return bootp_opt[idx].ftype; } /* Returns the number of bytes consumed by this option. */ static int bootp_option(tvbuff_t *tvb, proto_tree *bp_tree, int voff, int eoff, gboolean first_pass, gboolean *at_end, const char **dhcp_type_p, const guint8 **vendor_class_id_p, guint8 *overload_p) { const char *text; enum field_type ftype; guchar code = tvb_get_guint8(tvb, voff); int optlen; const struct true_false_string *tfs; const value_string *vs; guchar byte; int i, consumed; int optoff, optleft, optend; gulong time_secs; proto_tree *v_tree, *ft; proto_item *vti; guint8 protocol; guint8 algorithm; guint8 rdm; guint8 fqdn_flags; int o52voff, o52eoff; gboolean o52at_end; guint8 s_option; int ava_vid; const gchar *dns_name; static const value_string slpda_vals[] = { {0x00, "Dynamic Discovery" }, {0x01, "Static Discovery" }, {0x80, "Backwards compatibility" }, {0, NULL } }; static const value_string slp_scope_vals[] = { {0x00, "Preferred Scope" }, {0x01, "Mandatory Scope" }, {0, NULL } }; static const value_string authen_protocol_vals[] = { {AUTHEN_PROTO_CONFIG_TOKEN, "configuration token" }, {AUTHEN_PROTO_DELAYED_AUTHEN, "delayed authentication" }, {0, NULL } }; static const value_string authen_da_algo_vals[] = { {AUTHEN_DELAYED_ALGO_HMAC_MD5, "HMAC_MD5" }, {0, NULL } }; static const value_string authen_rdm_vals[] = { {AUTHEN_RDM_MONOTONIC_COUNTER, "Monotonically-increasing counter" }, {0, NULL } }; static const value_string opt_overload_vals[] = { { OPT_OVERLOAD_FILE, "Boot file name holds options", }, { OPT_OVERLOAD_SNAME, "Server host name holds options", }, { OPT_OVERLOAD_BOTH, "Boot file and server host names hold options" }, { 0, NULL } }; /* Options whose length isn't "optlen + 2". */ switch (code) { case 0: /* Padding */ /* check how much padding we have */ for (i = voff + 1; i < eoff; i++ ) { if (tvb_get_guint8(tvb, i) != 0) { break; } } i = i - voff; if (!first_pass) { if (bp_tree != NULL) { proto_tree_add_text(bp_tree, tvb, voff, i, "Padding (%d byte%s)", i, (i>1)?"s":""); } } consumed = i; return consumed; case 255: /* End Option */ if (!first_pass) { if (bp_tree != NULL) { proto_tree_add_text(bp_tree, tvb, voff, 1, "End Option%s", *overload_p?" (overload)":""); } } *at_end = TRUE; consumed = 1; return consumed; } /* * Get the length of the option, and the number of bytes it * consumes (the length doesn't include the option code or * length bytes). * * On the first pass, check first whether we have the length * byte, so that we don't throw an exception; if we throw an * exception in the first pass, which is only checking for options * whose values we need in order to properly dissect the packet * on the second pass, we won't actually dissect the options, so * you won't be able to see which option had the problem. */ if (first_pass) { if (!tvb_bytes_exist(tvb, voff+1, 1)) { /* * We don't have the length byte; just return 1 * as the number of bytes we consumed, to count * the code byte. */ return 1; } } optlen = tvb_get_guint8(tvb, voff+1); consumed = optlen + 2; /* * In the first pass, we don't put anything into the protocol * tree; we just check for some options we have to look at * in order to properly process the packet: * * 52 (Overload) - we need this to properly dissect the * file and sname fields * * 53 (DHCP message type) - if this is present, this is DHCP * * 60 (Vendor class identifier) - we need this in order to * interpret the vendor-specific info * * We also check, before fetching anything, to make sure we * have the entire item we're fetching, so that we don't throw * an exception. */ if (first_pass) { if (tvb_bytes_exist(tvb, voff+2, consumed-2)) { switch (code) { case 52: *overload_p = tvb_get_guint8(tvb, voff+2); break; case 53: *dhcp_type_p = val_to_str(tvb_get_guint8(tvb, voff+2), opt53_text, "Unknown Message Type (0x%02x)"); break; case 60: *vendor_class_id_p = tvb_get_ptr(tvb, voff+2, consumed-2); break; } } /* * We don't do anything else here. */ return consumed; } /* * This is the second pass - if there's a protocol tree to be * built, we put stuff into it, otherwise we just return. */ if (bp_tree == NULL) { /* Don't put anything in the protocol tree. */ return consumed; } /* Normal cases */ text = bootp_get_opt_text(code); ftype = bootp_get_opt_ftype(code); optoff = voff+2; vti = proto_tree_add_text(bp_tree, tvb, voff, consumed, "Option: (t=%d,l=%d) %s", code, optlen, text); v_tree = proto_item_add_subtree(vti, ett_bootp_option); proto_tree_add_uint_format_value(v_tree, hf_bootp_option_type, tvb, voff, 1, code, "(%d) %s", code, text); proto_tree_add_item(v_tree, hf_bootp_option_length, tvb, voff+1, 1, FALSE); if (optlen > 0) { proto_tree_add_item(v_tree, hf_bootp_option_value, tvb, voff+2, optlen, FALSE); } /* Special cases */ switch (code) { case 21: /* Policy Filter */ if (optlen == 8) { /* one IP address pair */ proto_item_append_text(vti, " = %s/%s", ip_to_str(tvb_get_ptr(tvb, optoff, 4)), ip_to_str(tvb_get_ptr(tvb, optoff+4, 4))); } else { /* > 1 IP address pair. Let's make a sub-tree */ for (i = optoff, optleft = optlen; optleft > 0; i += 8, optleft -= 8) { if (optleft < 8) { proto_tree_add_text(v_tree, tvb, i, optleft, "Option length isn't a multiple of 8"); break; } proto_tree_add_text(v_tree, tvb, i, 8, "IP Address/Mask: %s/%s", ip_to_str(tvb_get_ptr(tvb, i, 4)), ip_to_str(tvb_get_ptr(tvb, i+4, 4))); } } break; case 33: /* Static Route */ if (optlen == 8) { /* one IP address pair */ proto_item_append_text(vti, " = %s/%s", ip_to_str(tvb_get_ptr(tvb, optoff, 4)), ip_to_str(tvb_get_ptr(tvb, optoff+4, 4))); } else { /* > 1 IP address pair. Let's make a sub-tree */ for (i = optoff, optleft = optlen; optleft > 0; i += 8, optleft -= 8) { if (optleft < 8) { proto_tree_add_text(v_tree, tvb, i, optleft, "Option length isn't a multiple of 8"); break; } proto_tree_add_text(v_tree, tvb, i, 8, "Destination IP Address/Router: %s/%s", ip_to_str(tvb_get_ptr(tvb, i, 4)), ip_to_str(tvb_get_ptr(tvb, i+4, 4))); } } break; case 43: /* Vendor-Specific Info */ s_option = tvb_get_guint8(tvb, optoff); /* Alcatel-Lucent AVA */ if (optlen == 5 && s_option == 58) { proto_item_append_text(vti, " (Alcatel-Lucent AVA)"); ava_vid = tvb_get_ntohs(tvb, optoff + 2); proto_tree_add_text (v_tree, tvb, optoff + 2, 2, "Opcode: 58"); proto_tree_add_uint (v_tree, hf_bootp_alu_vid, tvb, optoff + 2, 2, ava_vid); if (ava_vid == 65535) { proto_tree_add_text (v_tree, tvb, optoff + 2, 2, "Type: Request from ALU IP Phone"); } else { proto_tree_add_text (v_tree, tvb, optoff + 2, 2, "Type: Response from DHCP Server"); } break; } /* Alcatel-Lucent DHCP Extensions for Spatial Redundancy */ if ((optlen == 12 && s_option == 64) || (optlen == 6 && s_option == 64) || (optlen == 6 && s_option == 65)) { if (optlen == 6 && s_option == 64) { proto_item_append_text(vti, " (Alcatel-Lucent TFTP Options)"); proto_tree_add_text (v_tree, tvb, optoff + 2, 2, "Opcode: 64"); proto_tree_add_ipv4(v_tree,hf_bootp_alu_tftp1 ,tvb,optoff+2, 4, tvb_get_ipv4(tvb,optoff+2)); } if (optlen == 6 && s_option == 65) { proto_item_append_text(vti, " (Alcatel-Lucent TFTP Options)"); proto_tree_add_text (v_tree, tvb, optoff + 2, 2, "Opcode: 65"); proto_tree_add_ipv4(v_tree,hf_bootp_alu_tftp2 ,tvb,optoff+2 ,4, tvb_get_ipv4(tvb,optoff+2)); } if (optlen == 12 && s_option == 64) { proto_item_append_text(vti, " (Alcatel-Lucent TFTP Options)"); proto_tree_add_text (v_tree, tvb, optoff + 2, 2, "Opcode: 64 and 65"); proto_tree_add_ipv4(v_tree,hf_bootp_alu_tftp1 ,tvb,optoff+2 ,4, tvb_get_ipv4(tvb,optoff+2)); proto_tree_add_ipv4(v_tree,hf_bootp_alu_tftp2 ,tvb,optoff+8 ,4, tvb_get_ipv4(tvb,optoff+8)); } break; } /* PXE protocol 2.1 as described in the intel specs */ if (*vendor_class_id_p != NULL && strncmp((const gchar*)*vendor_class_id_p, "PXEClient", strlen("PXEClient")) == 0) { proto_item_append_text(vti, " (PXEClient)"); v_tree = proto_item_add_subtree(vti, ett_bootp_option); optend = optoff + optlen; while (optoff < optend) { optoff = dissect_vendor_pxeclient_suboption(v_tree, tvb, optoff, optend); } } else if (*vendor_class_id_p != NULL && ((strncmp((const gchar*)*vendor_class_id_p, "pktc", strlen("pktc")) == 0) || (strncmp((const gchar*)*vendor_class_id_p, "docsis", strlen("docsis")) == 0) || (strncmp((const gchar*)*vendor_class_id_p, "OpenCable2.0", strlen("OpenCable2.0")) == 0) || (strncmp((const gchar*)*vendor_class_id_p, "CableHome", strlen("CableHome")) == 0))) { /* CableLabs standard - see www.cablelabs.com/projects */ proto_item_append_text(vti, " (CableLabs)"); optend = optoff + optlen; while (optoff < optend) { optoff = dissect_vendor_cablelabs_suboption(v_tree, tvb, optoff, optend); } } break; case 52: /* Option Overload */ if (optlen < 1) { proto_item_append_text(vti, " length isn't >= 1"); break; } byte = tvb_get_guint8(tvb, optoff); proto_item_append_text(vti, " = %s", val_to_str(byte, opt_overload_vals, "Unknown (0x%02x)")); /* Just in case we find an option 52 in sname or file */ if (voff > VENDOR_INFO_OFFSET && byte >= 1 && byte <= 3) { if (byte & OPT_OVERLOAD_FILE) { proto_tree_add_text (bp_tree, tvb, FILE_NAME_OFFSET, FILE_NAME_LEN, "Boot file name option overload"); o52voff = FILE_NAME_OFFSET; o52eoff = FILE_NAME_OFFSET + FILE_NAME_LEN; o52at_end = FALSE; while (o52voff < o52eoff && !o52at_end) { o52voff += bootp_option(tvb, bp_tree, o52voff, o52eoff, FALSE, &o52at_end, dhcp_type_p, vendor_class_id_p, overload_p); } } if (byte & OPT_OVERLOAD_SNAME) { proto_tree_add_text (bp_tree, tvb, SERVER_NAME_OFFSET, SERVER_NAME_LEN, "Server host name option overload"); o52voff = SERVER_NAME_OFFSET; o52eoff = SERVER_NAME_OFFSET + SERVER_NAME_LEN; o52at_end = FALSE; while (o52voff < o52eoff && !o52at_end) { o52voff += bootp_option(tvb, bp_tree, o52voff, o52eoff, FALSE, &o52at_end, dhcp_type_p, vendor_class_id_p, overload_p); } } /* The final end option is not in overload */ *overload_p = 0; } break; case 53: /* DHCP Message Type */ if (optlen != 1) { proto_item_append_text(vti, " length isn't 1"); break; } proto_item_append_text(vti, " = DHCP %s", val_to_str(tvb_get_guint8(tvb, optoff), opt53_text, "Unknown Message Type (0x%02x)")); break; case 55: /* Parameter Request List */ for (i = 0; i < optlen; i++) { byte = tvb_get_guint8(tvb, optoff+i); proto_tree_add_text(v_tree, tvb, optoff+i, 1, "%d = %s", byte, bootp_get_opt_text(byte)); } break; case 60: /* Vendor class identifier */ /* * XXX - RFC 2132 says this is a string of octets; * should we check for non-printables? */ proto_item_append_text(vti, " = \"%s\"", tvb_format_stringzpad(tvb, optoff, consumed-2)); if ((tvb_memeql(tvb, optoff, (const guint8*)PACKETCABLE_MTA_CAP10, strlen(PACKETCABLE_MTA_CAP10)) == 0) || (tvb_memeql(tvb, optoff, (const guint8*)PACKETCABLE_MTA_CAP15, strlen(PACKETCABLE_MTA_CAP10)) == 0)) { dissect_packetcable_mta_cap(v_tree, tvb, optoff, optlen); } else { if (tvb_memeql(tvb, optoff, (const guint8*)PACKETCABLE_CM_CAP11, strlen(PACKETCABLE_CM_CAP11)) == 0 || tvb_memeql(tvb, optoff, (const guint8*)PACKETCABLE_CM_CAP20, strlen(PACKETCABLE_CM_CAP20)) == 0 ) { dissect_docsis_cm_cap(v_tree, tvb, optoff, optlen); } } break; case 61: /* Client Identifier */ case 97: /* Client Identifier (UUID) */ if (optlen > 0) byte = tvb_get_guint8(tvb, optoff); else byte = 0; /* We *MAY* use hwtype/hwaddr. If we have 7 bytes, I'll guess that the first is the hwtype, and the last 6 are the hw addr */ /* See http://www.iana.org/assignments/arp-parameters */ /* RFC2132 9.14 Client-identifier has the following to say: A hardware type of 0 (zero) should be used when the value field contains an identifier other than a hardware address (e.g. a fully qualified domain name). */ if (optlen == 7 && byte > 0 && byte < 48) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Hardware type: %s", arphrdtype_to_str(byte, "Unknown (0x%02x)")); if (byte == ARPHRD_ETHER || byte == ARPHRD_IEEE802) proto_tree_add_item(v_tree, hf_bootp_hw_ether_addr, tvb, optoff+1, 6, FALSE); else proto_tree_add_text(v_tree, tvb, optoff+1, 6, "Client hardware address: %s", arphrdaddr_to_str(tvb_get_ptr(tvb, optoff+1, 6), 6, byte)); } else if (optlen == 17 && byte == 0) { /* Identifier is a UUID */ proto_tree_add_item(v_tree, hf_bootp_client_identifier_uuid, tvb, optoff + 1, 16, TRUE); } else { /* otherwise, it's opaque data */ } break; case 63: /* NetWare/IP options (RFC 2242) */ optend = optoff + optlen; while (optoff < optend) optoff = dissect_netware_ip_suboption(v_tree, tvb, optoff, optend); break; case 78: /* SLP Directory Agent Option RFC2610 Added by Greg Morris (gmorris@novell.com)*/ if (optlen < 1) { proto_item_append_text(vti, " length isn't >= 1"); break; } optleft = optlen; byte = tvb_get_guint8(tvb, optoff); proto_item_append_text(vti, " = %s", val_to_str(byte, slpda_vals, "Unknown (0x%02x)")); optoff++; optleft--; if (byte == 0x80) { if (optleft == 0) break; optoff++; optleft--; } for (i = optoff; optleft > 0; i += 4, optleft -= 4) { if (optleft < 4) { proto_tree_add_text(v_tree, tvb, i, optleft, "Option length isn't a multiple of 4"); break; } proto_tree_add_text(v_tree, tvb, i, 4, "SLPDA Address: %s", ip_to_str(tvb_get_ptr(tvb, i, 4))); } break; case 79: /* SLP Service Scope Option RFC2610 Added by Greg Morris (gmorris@novell.com)*/ byte = tvb_get_guint8(tvb, optoff); proto_item_append_text(vti, " = %s", val_to_str(byte, slp_scope_vals, "Unknown (0x%02x)")); optoff++; optleft = optlen - 1; proto_tree_add_text(v_tree, tvb, optoff, optleft, "%s = \"%s\"", text, tvb_format_stringzpad(tvb, optoff, optleft)); break; case 81: /* Client Fully Qualified Domain Name */ if (optlen < 3) { proto_item_append_text(vti, " length isn't >= 3"); break; } fqdn_flags = tvb_get_guint8(tvb, optoff); ft = proto_tree_add_text(v_tree, tvb, optoff, 1, "Flags: 0x%02x", fqdn_flags); proto_tree_add_item(v_tree, hf_bootp_fqdn_mbz, tvb, optoff, 1, FALSE); proto_tree_add_item(v_tree, hf_bootp_fqdn_n, tvb, optoff, 1, FALSE); proto_tree_add_item(v_tree, hf_bootp_fqdn_e, tvb, optoff, 1, FALSE); proto_tree_add_item(v_tree, hf_bootp_fqdn_o, tvb, optoff, 1, FALSE); proto_tree_add_item(v_tree, hf_bootp_fqdn_s, tvb, optoff, 1, FALSE); /* XXX: use code from packet-dns for return code decoding */ proto_tree_add_item(v_tree, hf_bootp_fqdn_rcode1, tvb, optoff+1, 1, FALSE); /* XXX: use code from packet-dns for return code decoding */ proto_tree_add_item(v_tree, hf_bootp_fqdn_rcode2, tvb, optoff+2, 1, FALSE); if (optlen > 3) { if (fqdn_flags & F_FQDN_E) { get_dns_name(tvb, optoff+3, optlen-3, optoff+3, &dns_name); proto_tree_add_string(v_tree, hf_bootp_fqdn_name, tvb, optoff+3, optlen-3, dns_name); } else { proto_tree_add_item(v_tree, hf_bootp_fqdn_asciiname, tvb, optoff+3, optlen-3, FALSE); } } break; case 82: /* Relay Agent Information Option */ optend = optoff + optlen; while (optoff < optend) optoff = bootp_dhcp_decode_agent_info(v_tree, tvb, optoff, optend); break; case 85: /* Novell Servers (RFC 2241) */ /* Option 85 can be sent as a string */ /* Added by Greg Morris (gmorris[AT]novell.com) */ if (novell_string) { proto_item_append_text(vti, " = \"%s\"", tvb_format_stringzpad(tvb, optoff, optlen)); } else { if (optlen == 4) { /* one IP address */ proto_item_append_text(vti, " = %s", ip_to_str(tvb_get_ptr(tvb, optoff, 4))); } else { /* > 1 IP addresses. Let's make a sub-tree */ for (i = optoff, optleft = optlen; optleft > 0; i += 4, optleft -= 4) { if (optleft < 4) { proto_tree_add_text(v_tree, tvb, i, optleft, "Option length isn't a multiple of 4"); break; } proto_tree_add_text(v_tree, tvb, i, 4, "IP Address: %s", ip_to_str(tvb_get_ptr(tvb, i, 4))); } } } break; case 94: { /* Client network interface identifier */ guint8 id_type; id_type = tvb_get_guint8(tvb, optoff); if (id_type == 0x01) { proto_tree_add_item(v_tree, hf_bootp_client_network_id_major_ver, tvb, optoff + 1, 1, TRUE); proto_tree_add_item(v_tree, hf_bootp_client_network_id_minor_ver, tvb, optoff + 2, 1, TRUE); } break; } case 90: /* DHCP Authentication */ case 210: /* Was this used for authentication at one time? */ if (optlen < 11) { proto_item_append_text(vti, " length isn't >= 11"); break; } optleft = optlen; protocol = tvb_get_guint8(tvb, optoff); proto_tree_add_text(v_tree, tvb, optoff, 1, "Protocol: %s (%u)", val_to_str(protocol, authen_protocol_vals, "Unknown"), protocol); optoff++; optleft--; algorithm = tvb_get_guint8(tvb, optoff); switch (protocol) { case AUTHEN_PROTO_DELAYED_AUTHEN: proto_tree_add_text(v_tree, tvb, optoff, 1, "Algorithm: %s (%u)", val_to_str(algorithm, authen_da_algo_vals, "Unknown"), algorithm); break; default: proto_tree_add_text(v_tree, tvb, optoff, 1, "Algorithm: %u", algorithm); break; } optoff++; optleft--; rdm = tvb_get_guint8(tvb, optoff); proto_tree_add_text(v_tree, tvb, optoff, 1, "Replay Detection Method: %s (%u)", val_to_str(rdm, authen_rdm_vals, "Unknown"), rdm); optoff++; optleft--; switch (rdm) { case AUTHEN_RDM_MONOTONIC_COUNTER: proto_tree_add_text(v_tree, tvb, optoff, 8, "RDM Replay Detection Value: %" G_GINT64_MODIFIER "x", tvb_get_ntoh64(tvb, optoff)); break; default: proto_tree_add_text(v_tree, tvb, optoff, 8, "Replay Detection Value: %s", tvb_bytes_to_str(tvb, optoff, 8)); break; } optoff += 8; optleft -= 8; switch (protocol) { case AUTHEN_PROTO_DELAYED_AUTHEN: switch (algorithm) { case AUTHEN_DELAYED_ALGO_HMAC_MD5: if (*dhcp_type_p && !strcmp(*dhcp_type_p, OPT53_DISCOVER)) { /* Discover has no Secret ID nor HMAC MD5 Hash */ break; } else { if (optlen < 31) { proto_item_append_text(vti, " length isn't >= 31"); break; } proto_tree_add_text(v_tree, tvb, optoff, 4, "Secret ID: 0x%08x", tvb_get_ntohl(tvb, optoff)); optoff += 4; optleft -= 4; proto_tree_add_text(v_tree, tvb, optoff, 16, "HMAC MD5 Hash: %s", tvb_bytes_to_str(tvb, optoff, 16)); break; } default: if (optleft == 0) break; proto_tree_add_text(v_tree, tvb, optoff, optleft, "Authentication Information: %s", tvb_bytes_to_str(tvb, optoff, optleft)); break; } break; default: if (optleft == 0) break; proto_tree_add_text(v_tree, tvb, optoff, optleft, "Authentication Information: %s", tvb_bytes_to_str(tvb, optoff, optleft)); break; } break; case 99: /* civic location (RFC 4776) */ optleft = optlen; if (optleft >= 3) { proto_tree_add_text(v_tree, tvb, optoff, 1, "What: %d (%s)", tvb_get_guint8(tvb, optoff), val_to_str(tvb_get_guint8(tvb, optoff), civic_address_what_values, "Unknown") ); proto_tree_add_text(v_tree, tvb, optoff + 1, 2, "Country: \"%s\"", tvb_format_text(tvb, optoff + 1, 2) ); optleft = optleft - 3; optoff = optoff + 3; while (optleft >= 2) { int catype = tvb_get_guint8(tvb, optoff); optoff++; optleft--; s_option = tvb_get_guint8(tvb, optoff); optoff++; optleft--; if (s_option == 0) { proto_tree_add_text(v_tree, tvb, optoff, s_option, "CAType %d [%s] (l=%d): EMTPY", catype, val_to_str(catype, civic_address_type_values, "Unknown"), s_option); continue; } if (optleft >= s_option) { proto_tree_add_text(v_tree, tvb, optoff, s_option, "CAType %d [%s] (l=%d): \"%s\"", catype, val_to_str(catype, civic_address_type_values, "Unknown"), s_option, tvb_format_text(tvb, optoff, s_option)); optoff = optoff + s_option; optleft = optleft - s_option; } else { optleft = 0; proto_tree_add_text(v_tree, tvb, optoff, s_option, "Error with CAType"); } } } break; case 121: /* Classless Static Route */ case 249: { /* Classless Static Route (Microsoft) */ int mask_width, significant_octets; optend = optoff + optlen; /* minimum length is 5 bytes */ if (optlen < 5) { proto_item_append_text(vti, " [ERROR: Option length < 5 bytes]"); break; } while (optoff < optend) { mask_width = tvb_get_guint8(tvb, optoff); /* mask_width <= 32 */ if (mask_width > 32) { proto_tree_add_text(v_tree, tvb, optoff, optend - optoff, "Subnet/MaskWidth-Router: [ERROR: Mask width (%d) > 32]", mask_width); break; } significant_octets = (mask_width + 7) / 8; vti = proto_tree_add_text(v_tree, tvb, optoff, 1 + significant_octets + 4, "Subnet/MaskWidth-Router: "); optoff++; /* significant octets + router(4) */ if (optend < optoff + significant_octets + 4) { proto_item_append_text(vti, "[ERROR: Remaining length (%d) < %d bytes]", optend - optoff, significant_octets + 4); break; } if(mask_width == 0) proto_item_append_text(vti, "default"); else { for(i = 0 ; i < significant_octets ; i++) { if (i > 0) proto_item_append_text(vti, "."); byte = tvb_get_guint8(tvb, optoff++); proto_item_append_text(vti, "%d", byte); } for(i = significant_octets ; i < 4 ; i++) proto_item_append_text(vti, ".0"); proto_item_append_text(vti, "/%d", mask_width); } proto_item_append_text(vti, "-%s", ip_to_str(tvb_get_ptr(tvb, optoff, 4))); optoff += 4; } break; } case 123: /* coordinate based location RFC 3825 */ if (optlen == 16) { int c; unsigned char lci[16]; struct rfc3825_location_fixpoint_t location_fp; struct rfc3825_location_decimal_t location; for (c=0; c < 16;c++) lci[c] = (unsigned char) tvb_get_guint8(tvb, optoff + c); /* convert lci encoding into fixpoint location */ rfc3825_lci_to_fixpoint(lci, &location_fp); /* convert location from decimal to fixpoint */ i = rfc3825_fixpoint_to_decimal(&location_fp, &location); if (i != RFC3825_NOERROR) { proto_tree_add_text(v_tree, tvb, optoff, optlen, "Error: %s", val_to_str(i, rfc3825_error_types, "Unknown")); } else { proto_tree_add_text(v_tree, tvb, optoff, 5, "Latitude: %15.10f", location.latitude); proto_tree_add_text(v_tree, tvb, optoff+5, 5, "Longitude: %15.10f", location.longitude); proto_tree_add_text(v_tree, tvb, optoff, 1, "Latitude resolution: %15.10f", location.latitude_res); proto_tree_add_text(v_tree, tvb, optoff+5, 1, "Longitude resolution: %15.10f", location.longitude_res); proto_tree_add_text(v_tree, tvb, optoff+12, 4, "Altitude: %15.10f", location.altitude); proto_tree_add_text(v_tree, tvb, optoff+10, 2, "Altitude resolution: %15.10f", location.altitude_res); proto_tree_add_text(v_tree, tvb, optoff+10, 1, "Altitude type: %s (%d)", val_to_str(location.altitude_type, altitude_type_values, "Unknown"), location.altitude_type); proto_tree_add_text(v_tree, tvb, optoff+15, 1, "Map Datum: %s (%d)", val_to_str(location.datum_type, map_datum_type_values, "Unknown"), location.datum_type); } } else { proto_tree_add_text(v_tree, tvb, optoff, optlen, "Error: Invalid length of DHCP option!"); } break; case 125: { /* V-I Vendor-specific Information */ int enterprise = 0; int s_end = 0; int s_option_len = 0; proto_tree *e_tree = 0; optend = optoff + optlen; optleft = optlen; while (optleft > 0) { if (optleft < 5) { proto_tree_add_text(v_tree, tvb, optoff, optleft, "Vendor-specific Information: malformed option"); break; } enterprise = tvb_get_ntohl(tvb, optoff); vti = proto_tree_add_text(v_tree, tvb, optoff, 4, "Enterprise-number: %s-%u", val_to_str( enterprise, sminmpec_values, "Unknown"), enterprise); s_option_len = tvb_get_guint8(tvb, optoff + 4); optoff += 5; optleft -= 5; /* Handle DSL Forum TR-111 Option 125 */ if ( enterprise == 3561 ) { s_end = optoff + s_option_len; if ( s_end > optend ) { proto_tree_add_text(v_tree, tvb, optoff, 1, "no room left in option for enterprise %u data", enterprise); break; } e_tree = proto_item_add_subtree(vti, ett_bootp_option); while (optoff < s_end) { optoff = dissect_vendor_tr111_suboption(e_tree, tvb, optoff, s_end); } } else { /* skip over the data and look for next enterprise number */ optoff += s_option_len; } optleft -= s_option_len; } break; } default: /* not special */ /* The PacketCable CCC option number can vary. If this is a CCC option, handle it as a special. */ if (code == pkt_ccc_option) { ftype = special; proto_item_append_text(vti, "CableLabs Client Configuration (%d bytes)", optlen); optend = optoff + optlen; while (optoff < optend) { switch (pkt_ccc_protocol_version) { case PACKETCABLE_CCC_I05: optoff = dissect_packetcable_i05_ccc(v_tree, tvb, optoff, optend); break; case PACKETCABLE_CCC_DRAFT5: case PACKETCABLE_CCC_RFC_3495: optoff = dissect_packetcable_ietf_ccc(v_tree, tvb, optoff, optend, pkt_ccc_protocol_version); break; default: /* XXX Should we do something here? */ break; } } } break; } switch (ftype) { case ipv4: if (optlen != 4) { proto_item_append_text(vti, " - length isn't 4"); break; } proto_item_append_text(vti, " = %s", ip_to_str(tvb_get_ptr(tvb, optoff, 4))); break; case ipv4_list: if (optlen == 4) { /* one IP address */ proto_item_append_text(vti, " = %s", ip_to_str(tvb_get_ptr(tvb, optoff, 4))); } else { /* > 1 IP addresses. Let's make a sub-tree */ for (i = optoff, optleft = optlen; optleft > 0; i += 4, optleft -= 4) { if (optleft < 4) { proto_tree_add_text(v_tree, tvb, i, voff + consumed - i, "Option length isn't a multiple of 4"); break; } proto_tree_add_text(v_tree, tvb, i, 4, "IP Address: %s", ip_to_str(tvb_get_ptr(tvb, i, 4))); } } break; case string: /* Fix for non null-terminated string supplied by * John Lines */ proto_item_append_text(vti, " = \"%s\"", tvb_format_stringzpad(tvb, optoff, consumed-2)); break; case val_boolean: if (optlen != 1) { proto_item_append_text(vti, " - length isn't 1"); break; } tfs = (const struct true_false_string *) bootp_get_opt_data(code); if(tfs){ i = tvb_get_guint8(tvb, optoff); if (i != 0 && i != 1) { proto_item_append_text(vti, " = Invalid Value %d", i); } else { proto_item_append_text(vti, " = %s", i == 0 ? tfs->false_string : tfs->true_string); } } break; case val_u_byte: if (optlen != 1) { proto_item_append_text(vti, " - length isn't 1"); break; } vs = (const value_string *) bootp_get_opt_data(code); byte = tvb_get_guint8(tvb, optoff); if (vs != NULL) { proto_item_append_text(vti, " = %s", val_to_str(byte, vs, "Unknown (%u)")); } else proto_item_append_text(vti, " = %u", byte); break; case val_u_short: { gushort vd; if (optlen != 2) { proto_item_append_text(vti, " - length isn't 2"); break; } vs = (const value_string *) bootp_get_opt_data(code); vd = tvb_get_ntohs(tvb, optoff); if (vs != NULL) { proto_item_append_text(vti, " = %s", val_to_str(vd, vs, "Unknown (%u)")); } else proto_item_append_text(vti, " = %u", vd); break; } case val_u_short_list: if (optlen == 2) { /* one gushort */ proto_item_append_text(vti, " = %u", tvb_get_ntohs(tvb, optoff)); } else { /* > 1 gushort */ for (i = optoff, optleft = optlen; optleft > 0; i += 2, optleft -= 2) { if (optleft < 2) { proto_tree_add_text(v_tree, tvb, i, voff + consumed - i, "Option length isn't a multiple of 2"); break; } proto_tree_add_text(v_tree, tvb, i, 4, "Value: %u", tvb_get_ntohs(tvb, i)); } } break; case val_u_long: if (optlen != 4) { proto_item_append_text(vti, " - length isn't 4"); break; } proto_item_append_text(vti, " = %u", tvb_get_ntohl(tvb, optoff)); break; case time_in_secs: if (optlen != 4) { proto_item_append_text(vti, " - length isn't 4"); break; } time_secs = tvb_get_ntohl(tvb, optoff); proto_item_append_text(vti, " = %s", ((time_secs == 0xffffffff) ? "infinity" : time_secs_to_str(time_secs))); break; default: break; } return consumed; } static int bootp_dhcp_decode_agent_info(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend) { int suboptoff = optoff; guint8 subopt; int subopt_len, datalen; guint32 enterprise; subopt = tvb_get_guint8(tvb, optoff); suboptoff++; if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (suboptoff+subopt_len > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } switch (subopt) { case 1: /* 1 Agent Circuit ID Sub-option [RFC3046] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Agent Circuit ID: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); break; case 2: /* 2 Agent Remote ID Sub-option [RFC3046] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Agent Remote ID: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); break; case 3: proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Reserved: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); break; case 4: /* 4 DOCSIS Device Class Suboption [RFC3256] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "DOCSIS Device Class: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); break; case 5: /* 5 Link selection Sub-option [RFC3527] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Link selection: %s", ip_to_str(tvb_get_ptr(tvb, suboptoff, subopt_len))); break; case 6: /*Subscriber-ID Suboption [RFC3993] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Subscriber ID: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); break; case 7: /* 7 RADIUS Attributes Sub-option [RFC4014] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "RADIUS Attributes: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); case 8: /* 8 Authentication Suboption [RFC4030] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Authentication: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); case 9: while (suboptoff < optend) { enterprise = tvb_get_ntohl(tvb, suboptoff); proto_tree_add_text(v_tree, tvb, suboptoff, 4, "Enterprise-number: %s-%u", val_to_str( enterprise, sminmpec_values, "Unknown"), enterprise); suboptoff += 4; datalen = tvb_get_guint8(tvb, suboptoff); proto_tree_add_text(v_tree, tvb, suboptoff, 1, "Data Length: %u", datalen); suboptoff++; proto_tree_add_text(v_tree, tvb, suboptoff, datalen, "Suboption Data: %s", tvb_bytes_to_str(tvb, suboptoff, datalen)); suboptoff += datalen; } break; case 10: /* 10 Relay Agent Flags [RFC5010] */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Flags: %s", tvb_bytes_to_str(tvb, suboptoff, subopt_len)); default: proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Unknown agent suboption %d (%d bytes)", subopt, subopt_len); break; } optoff += (subopt_len + 2); return optoff; } static int dissect_vendor_pxeclient_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend) { int suboptoff = optoff; guint8 subopt; guint8 subopt_len; int suboptleft; proto_tree *o43pxeclient_v_tree; proto_item *vti; static struct opt_info o43pxeclient_opt[]= { /* 0 */ {"nop", special, NULL}, /* dummy */ /* 1 */ {"PXE mtftp IP", ipv4_list, NULL}, /* 2 */ {"PXE mtftp client port", val_u_le_short, NULL}, /* 3 */ {"PXE mtftp server port",val_u_le_short, NULL}, /* 4 */ {"PXE mtftp timeout", val_u_byte, NULL}, /* 5 */ {"PXE mtftp delay", val_u_byte, NULL}, /* 6 */ {"PXE discovery control", val_u_byte, NULL}, /* * Correct: b0 (lsb): disable broadcast discovery * b1: disable multicast discovery * b2: only use/accept servers in boot servers * b3: download bootfile without prompt/menu/disc */ /* 7 */ {"PXE multicast address", ipv4_list, NULL}, /* 8 */ {"PXE boot servers", special, NULL}, /* 9 */ {"PXE boot menu", special, NULL}, /* 10 */ {"PXE menu prompt", special, NULL}, /* 11 */ {"PXE multicast address alloc", special, NULL}, /* 12 */ {"PXE credential types", special, NULL}, /* 71 {"PXE boot item", special, NULL}, */ /* 255 {"PXE end options", special, NULL} */ }; subopt = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (subopt == 0) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Padding"); return (suboptoff); } else if (subopt == 255) { /* End Option */ proto_tree_add_text(v_tree, tvb, optoff, 1, "End PXEClient option"); /* Make sure we skip any junk left this option */ return (optend); } if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (suboptoff+subopt_len > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } if ( subopt == 71 ) { /* 71 {"PXE boot item", special} */ /* case special */ /* I may need to decode that properly one day */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s (%d byte%s)" , subopt, "PXE boot item", subopt_len, plurality(subopt_len, "", "s")); } else if ((subopt < 1) || (subopt >= array_length(o43pxeclient_opt))) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Unknown suboption %d (%d byte%s)", subopt, subopt_len, plurality(subopt_len, "", "s")); } else { switch (o43pxeclient_opt[subopt].ftype) { case special: /* I may need to decode that properly one day */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s (%d byte%s)", subopt, o43pxeclient_opt[subopt].text, subopt_len, plurality(subopt_len, "", "s")); break; case ipv4_list: if (subopt_len == 4) { /* one IP address */ proto_tree_add_text(v_tree, tvb, optoff, 6, "Suboption %d : %s = %s", subopt, o43pxeclient_opt[subopt].text, ip_to_str(tvb_get_ptr(tvb, suboptoff, 4))); } else { /* > 1 IP addresses. Let's make a sub-tree */ vti = proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s", subopt, o43pxeclient_opt[subopt].text); o43pxeclient_v_tree = proto_item_add_subtree(vti, ett_bootp_option); for (suboptleft = subopt_len; suboptleft > 0; suboptoff += 4, suboptleft -= 4) { if (suboptleft < 4) { proto_tree_add_text(o43pxeclient_v_tree, tvb, suboptoff, suboptleft, "Suboption length isn't a multiple of 4"); break; } proto_tree_add_text(o43pxeclient_v_tree, tvb, suboptoff, 4, "IP Address: %s", ip_to_str(tvb_get_ptr(tvb, suboptoff, 4))); } } break; /* XXX case string: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s", subopt, o43pxeclient_opt[subopt].text); break; XXX */ case val_u_byte: if (subopt_len != 1) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: suboption length isn't 1", subopt); break; } proto_tree_add_text(v_tree, tvb, optoff, 3, "Suboption %d: %s = %u", subopt, o43pxeclient_opt[subopt].text, tvb_get_guint8(tvb, suboptoff)); break; case val_u_le_short: if (subopt_len != 2) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: suboption length isn't 2", subopt); break; } proto_tree_add_text(v_tree, tvb, optoff, 4, "Suboption %d: %s = %u", subopt, o43pxeclient_opt[subopt].text, tvb_get_letohs(tvb, suboptoff)); break; default: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2,"ERROR, please report: Unknown subopt type handler %d", subopt); break; } } optoff += (subopt_len + 2); return optoff; } /* RFC3825Decoder: http://www.enum.at/rfc3825encoder.529.0.html */ static void rfc3825_lci_to_fixpoint(const unsigned char lci[16], struct rfc3825_location_fixpoint_t *fixpoint) { fixpoint->latitude_res = (lci[0]>>2) & 0x3F; /* make sure that right-shift does not copy sign bit */ if (lci[0] & 2) { /* LSB<<1 contains the sign of the latitude */ /* Latitude is negative, expand two's complement */ fixpoint->latitude = (((gint64)lci[0] & 3)<<32) | ((gint64)lci[1]<<24) | ((gint64)lci[2]<<16) | ((gint64)lci[3]<<8) | (gint64)lci[4] | ((gint64)0x3FFFFFFF<<34); } else { /* Latitude is positive */ fixpoint->latitude = (((gint64)lci[0] & 3)<<32) | ((gint64)lci[1]<<24) | ((gint64)lci[2]<<16) | ((gint64)lci[3]<<8) | (gint64)lci[4]; } fixpoint->longitude_res = (lci[5]>>2) & 0x3F; /* make sure that right-shift does not copy sign bit */ if (lci[5] & 2) { /* LSB<<1 contains the sign of the latitude */ /* Longitude is negative, expand two's complement */ fixpoint->longitude = (((gint64)lci[5] & 3)<<32) | ((gint64)lci[6]<<24) | ((gint64)lci[7]<<16) | ((gint64)lci[8]<<8) | (gint64)lci[9] | ((gint64)0x3FFFFFFF<<34); } else { /* Longitude is positive */ fixpoint->longitude = (((gint64)lci[5] & 3)<<32) | ((gint64)lci[6]<<24) | ((gint64)lci[7]<<16) | ((gint64)lci[8]<<8) | (gint64)lci[9]; } fixpoint->altitude_type = (lci[10]>>4) & 0x0F; /* make sure that right-shift does not copy sign bit */ fixpoint->altitude_res = ((lci[10] & 0x0F) << 2) | ((lci[11]>>6) & 0x03); if (lci[11] & 0x20) { /* LSB<<1 contains the sign of the latitude */ /* Altitude is negative, expand two's complement */ fixpoint->altitude = (((gint32)lci[11] & 0x3F)<<24) | ((gint32)lci[12]<<16) | ((gint32)lci[13]<<8) | ((gint32)lci[14]) | ((gint32)0x03<<30); } else { /* Altitudee is positive */ fixpoint->altitude = (((gint32)lci[11] & 0x3F)<<24) | ((gint32)lci[12]<<16) | ((gint32)lci[13]<<8) | ((gint32)lci[14]); } fixpoint->datum_type = lci[15]; } /* RFC3825Decoder: http://www.enum.at/rfc3825encoder.529.0.html */ static int rfc3825_fixpoint_to_decimal(struct rfc3825_location_fixpoint_t *fixpoint, struct rfc3825_location_decimal_t *decimal) { /* Latitude */ decimal->latitude = (double) fixpoint->latitude / (1 << 25); if ((decimal->latitude > 90) || (decimal->latitude < -90)) { return RFC3825_LATITUDE_OUTOFRANGE; } /* Latitude Uncertainty */ if (fixpoint->latitude_res > 34) { return RFC3825_LATITUDE_UNCERTAINTY_OUTOFRANGE; } if (fixpoint->latitude_res > 8 ) { decimal->latitude_res = (double) 1 / (1 << (fixpoint->latitude_res - 8)); } else { decimal->latitude_res = 1 << (8 - fixpoint->latitude_res); } /* Longitude */ decimal->longitude = (double) fixpoint->longitude / (1 << 25); if ((decimal->longitude > 180) || (decimal->longitude < -180)) { return RFC3825_LONGITUDE_OUTOFRANGE; } /* Longitude Uncertainty */ if (fixpoint->longitude_res > 34) { return RFC3825_LONGITUDE_UNCERTAINTY_OUTOFRANGE; } if (fixpoint->longitude_res > 8 ) { decimal->longitude_res = (double) 1 / (1 << (fixpoint->longitude_res - 8)); } else { decimal->longitude_res = 1 << (8 - fixpoint->longitude_res); } /* Altitude Type */ decimal->altitude_type = fixpoint->altitude_type; decimal->altitude = 0; decimal->altitude_res = 0; if (decimal->altitude_type == 0) { /* Unknown */ } else if (decimal->altitude_type == 1) { /* Meters */ /* Altitude */ decimal->altitude = (double) fixpoint->altitude / (1 << 8); if ((decimal->altitude > ((gint32) 1<<21)-1) || (decimal->altitude < ((gint32) -(1<<21)))) return RFC3825_ALTITUDE_OUTOFRANGE; /* Altitude Uncertainty */ if (fixpoint->altitude_res > 30) { return RFC3825_ALTITUDE_UNCERTAINTY_OUTOFRANGE; } if (fixpoint->altitude_res > 21 ) { decimal->altitude_res = (double) 1 / (1 << (fixpoint->altitude_res - 21)); } else { decimal->altitude_res = 1 << (21 - fixpoint->altitude_res); } } else if (decimal->altitude_type == 2) { /* Floors */ /* Altitude */ if ((fixpoint->altitude_res != 30) && (fixpoint->altitude_res != 0)) { return RFC3825_ALTITUDE_UNCERTAINTY_OUTOFRANGE; } decimal->altitude = (double) fixpoint->altitude / (1 << 8); } else { /* invalid type */ return RFC3825_ALTITUDE_TYPE_OUTOFRANGE; } /* Datum Type */ decimal->datum_type = 0; if ((fixpoint->datum_type > 3) || (fixpoint->datum_type < 1)) { return RFC3825_DATUM_TYPE_OUTOFRANGE; } decimal->datum_type = fixpoint->datum_type; return RFC3825_NOERROR; } static int dissect_vendor_cablelabs_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend) { int suboptoff = optoff; guint8 subopt, byte_val; guint8 subopt_len; static struct opt_info o43cablelabs_opt[]= { /* 0 */ {"nop", special, NULL}, /* dummy */ /* 1 */ {"Suboption Request List", string, NULL}, /* 2 */ {"Device Type", string, NULL}, /* 3 */ {"eSAFE Types", string, NULL}, /* 4 */ {"Serial Number", string, NULL}, /* 5 */ {"Hardware Version", string, NULL}, /* 6 */ {"Software Version", string, NULL}, /* 7 */ {"Boot ROM version", string, NULL}, /* 8 */ {"Organizationally Unique Identifier", special, NULL}, /* 9 */ {"Model Number", string, NULL}, /* 10 */ {"Vendor Name", string, NULL}, /* *** 11-30: CableHome *** */ /* 11 */ {"Address Realm", special, NULL}, /* 12 */ {"CM/PS System Description", string, NULL}, /* 13 */ {"CM/PS Firmware Revision", string, NULL}, /* 14 */ {"Firewall Policy File Version", string, NULL}, /* 15 */ {"eSafe Config File Devices", string, NULL}, /* 16 */ {"Unassigned (CableHome)", special, NULL}, /* 17 */ {"Unassigned (CableHome)", special, NULL}, /* 18 */ {"Video Security Type", string, NULL}, /* 19 */ {"Unassigned (CableHome)", special, NULL}, /* 20 */ {"Unassigned (CableHome)", special, NULL}, /* 21 */ {"Unassigned (CableHome)", special, NULL}, /* 22 */ {"Unassigned (CableHome)", special, NULL}, /* 23 */ {"Unassigned (CableHome)", special, NULL}, /* 24 */ {"Unassigned (CableHome)", special, NULL}, /* 25 */ {"Unassigned (CableHome)", special, NULL}, /* 26 */ {"Unassigned (CableHome)", special, NULL}, /* 27 */ {"Unassigned (CableHome)", special, NULL}, /* 28 */ {"Unassigned (CableHome)", special, NULL}, /* 29 */ {"Unassigned (CableHome)", special, NULL}, /* 30 */ {"Unassigned (CableHome)", special, NULL}, /* *** 31-50: PacketCable *** */ /* 31 */ {"MTA MAC Address", special, NULL}, /* 32 */ {"Correlation ID", val_u_long, NULL}, /* 33 */ {"Unassigned (PacketCable)", special, NULL}, /* 34 */ {"Unassigned (PacketCable)", special, NULL}, /* 35 */ {"Unassigned (PacketCable)", special, NULL}, /* 36 */ {"Unassigned (PacketCable)", special, NULL}, /* 37 */ {"Unassigned (PacketCable)", special, NULL}, /* 38 */ {"Unassigned (PacketCable)", special, NULL}, /* 39 */ {"Unassigned (PacketCable)", special, NULL}, /* 40 */ {"Unassigned (PacketCable)", special, NULL}, /* 41 */ {"Unassigned (PacketCable)", special, NULL}, /* 42 */ {"Unassigned (PacketCable)", special, NULL}, /* 43 */ {"Unassigned (PacketCable)", special, NULL}, /* 44 */ {"Unassigned (PacketCable)", special, NULL}, /* 45 */ {"Unassigned (PacketCable)", special, NULL}, /* 46 */ {"Unassigned (PacketCable)", special, NULL}, /* 47 */ {"Unassigned (PacketCable)", special, NULL}, /* 48 */ {"Unassigned (PacketCable)", special, NULL}, /* 49 */ {"Unassigned (PacketCable)", special, NULL}, /* 50 */ {"Unassigned (PacketCable)", special, NULL}, /* *** 51-127: CableLabs *** */ /* 51 */ {"Vendor Name", string, NULL}, /* 52 */ {"CableCARD Capability", special, NULL}, /* 53 */ {"Device Identification (CA)", special, NULL}, /* 54 */ {"Device Identification (X.509)", string, NULL}, /* 55 */ {"Unassigned (CableLabs)", special, NULL}, /* *** 128-254: Vendors *** */ /* 128-254 {"Unassigned (Vendors)", special, NULL}, */ /* 255 {"end options", special, NULL} */ }; static const value_string cablehome_subopt11_vals[] = { { 1, "PS WAN-Man" }, { 2, "PS WAN-Data" }, { 0, NULL } }; subopt = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (subopt == 0) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Padding"); return (suboptoff); } else if (subopt == 255) { /* End Option */ proto_tree_add_text(v_tree, tvb, optoff, 1, "End CableLabs option"); /* Make sure we skip any junk left this option */ return (optend); } if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (suboptoff+subopt_len > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } if ( (subopt < 1 ) || (subopt >= array_length(o43cablelabs_opt)) ) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: Unassigned (%d byte%s)", subopt, subopt_len, plurality(subopt_len, "", "s")); } else { switch (o43cablelabs_opt[subopt].ftype) { case special: if ( subopt == 8 ) { /* OUI */ /* CableLabs specs treat 43.8 inconsistently * as either binary (3b) or string (6b) */ if (subopt_len == 3) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: OUI = %s", subopt, bytes_to_str_punct(tvb_get_ptr(tvb, suboptoff, 3), 3, ':')); } else if (subopt_len == 6) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: OUI = \"%s\"", subopt, tvb_format_stringzpad(tvb, suboptoff, subopt_len)); } else { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: suboption length isn't 3 or 6", subopt); } break; } else if ( subopt == 11 ) { /* Address Realm */ if (subopt_len != 1) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: suboption length isn't 1", subopt); break; } byte_val = tvb_get_guint8(tvb, suboptoff); proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s = %s (0x%02x)", subopt, o43cablelabs_opt[subopt].text, val_to_str(byte_val, cablehome_subopt11_vals, "Unknown"), byte_val); } else if ( subopt == 31 ) { /* MTA MAC address */ if (subopt_len != 6) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: suboption length isn't 6", subopt); break; } proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s = %s", subopt, o43cablelabs_opt[subopt].text, bytes_to_str_punct(tvb_get_ptr(tvb, suboptoff, 6), 6, ':')); } else { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s (%d byte%s)" , subopt, o43cablelabs_opt[subopt].text, subopt_len, plurality(subopt_len, "", "s")); } break; case string: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s = \"%s\"", subopt, o43cablelabs_opt[subopt].text, tvb_format_stringzpad(tvb, suboptoff, subopt_len)); break; case bytes: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s = 0x%s", subopt, o43cablelabs_opt[subopt].text, tvb_bytes_to_str(tvb, suboptoff, subopt_len)); break; case val_u_long: if (subopt_len != 4) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: suboption length isn't 4", subopt); break; } proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s = %u", subopt, o43cablelabs_opt[subopt].text, tvb_get_ntohl(tvb, suboptoff)); break; default: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2,"ERROR, please report: Unknown subopt type handler %d", subopt); break; } } optoff += (subopt_len + 2); return optoff; } static int dissect_netware_ip_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend) { int suboptoff = optoff; guint8 subopt; guint8 subopt_len; int suboptleft; const struct true_false_string *tfs; int i; proto_tree *o63_v_tree; proto_item *vti; static struct opt_info o63_opt[]= { /* 0 */ {"",none,NULL}, /* 1 */ {"NWIP does not exist on subnet",presence,NULL}, /* 2 */ {"NWIP exists in options area",presence,NULL}, /* 3 */ {"NWIP exists in sname/file",presence,NULL}, /* 4 */ {"NWIP exists, but too big",presence,NULL}, /* 5 */ {"Broadcast for nearest Netware server",val_boolean,TFS(&yes_no_tfs)}, /* 6 */ {"Preferred DSS server",ipv4_list,NULL}, /* 7 */ {"Nearest NWIP server",ipv4_list,NULL}, /* 8 */ {"Autoretries",val_u_byte,NULL}, /* 9 */ {"Autoretry delay, secs",val_u_byte,NULL}, /* 10*/ {"Support NetWare/IP v1.1",val_boolean,TFS(&yes_no_tfs)}, /* 11*/ {"Primary DSS",ipv4,NULL} }; subopt = tvb_get_guint8(tvb, optoff); suboptoff++; if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (subopt >= array_length(o63_opt)) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Unknown suboption %d", subopt); } else { switch (o63_opt[subopt].ftype) { case presence: if (subopt_len != 0) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Suboption %d: length isn't 0", subopt); break; } proto_tree_add_text(v_tree, tvb, optoff, 2, "Suboption %d: %s", subopt, o63_opt[subopt].text); break; case ipv4: if (subopt_len != 4) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Suboption %d: length isn't 4", subopt); break; } if (suboptoff+4 > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } proto_tree_add_text(v_tree, tvb, optoff, 6, "Suboption %d: %s = %s" , subopt, o63_opt[subopt].text, ip_to_str(tvb_get_ptr(tvb, suboptoff, 4))); break; case ipv4_list: if (subopt_len == 4) { /* one IP address */ proto_tree_add_text(v_tree, tvb, optoff, 6, "Suboption %d : %s = %s", subopt, o63_opt[subopt].text, ip_to_str(tvb_get_ptr(tvb, suboptoff, 4))); } else { /* > 1 IP addresses. Let's make a sub-tree */ vti = proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s", subopt, o63_opt[subopt].text); o63_v_tree = proto_item_add_subtree(vti, ett_bootp_option); for (suboptleft = subopt_len; suboptleft > 0; suboptoff += 4, suboptleft -= 4) { if (suboptleft < 4) { proto_tree_add_text(o63_v_tree, tvb, suboptoff, suboptleft, "Suboption length isn't a multiple of 4"); break; } proto_tree_add_text(o63_v_tree, tvb, suboptoff, 4, "IP Address: %s", ip_to_str(tvb_get_ptr(tvb, suboptoff, 4))); } } break; case val_boolean: if (subopt_len != 1) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Suboption %d: suboption length isn't 1", subopt); break; } if (suboptoff+1 > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } tfs = (const struct true_false_string *) o63_opt[subopt].data; i = tvb_get_guint8(tvb, suboptoff); if (i != 0 && i != 1) { proto_tree_add_text(v_tree, tvb, optoff, 3, "Suboption %d: %s = Invalid Value %d", subopt, o63_opt[subopt].text, i); } else { proto_tree_add_text(v_tree, tvb, optoff, 3, "Suboption %d: %s = %s", subopt, o63_opt[subopt].text, i == 0 ? tfs->false_string : tfs->true_string); } break; case val_u_byte: if (subopt_len != 1) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Suboption %d: length isn't 1", subopt); break; } if (suboptoff+1 > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } proto_tree_add_text(v_tree, tvb, optoff, 3, "Suboption %d: %s = %u", subopt, o63_opt[subopt].text, tvb_get_guint8(tvb, suboptoff)); break; default: proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2,"Unknown suboption %d", subopt); break; } } optoff += (subopt_len + 2); return optoff; } static int dissect_vendor_tr111_suboption(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend) { int suboptoff = optoff; guint8 subopt; guint8 subopt_len; /* Reference: TR-111 DHCP Option 125 Sub-Option Data Fields Page 10. */ static struct opt_info o125_tr111_opt[]= { /* 0 */ {"nop", special, NULL}, /* dummy */ /* 1 */ {"DeviceManufacturerOUI", string, NULL}, /* 2 */ {"DeviceSerialNumber", string, NULL}, /* 3 */ {"DeviceProductClass", string, NULL}, /* 4 */ {"GatewayManufacturerOUI", string, NULL}, /* 5 */ {"GatewaySerialNumber", string, NULL}, /* 6 */ {"GatewayProductClass", string, NULL}, }; subopt = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (suboptoff+subopt_len > optend) { proto_tree_add_text(v_tree, tvb, optoff, optend-optoff, "Suboption %d: no room left in option for suboption value", subopt); return (optend); } if ((subopt < 1) || (subopt >= array_length(o125_tr111_opt))) { proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Unknown suboption %d (%d byte%s)", subopt, subopt_len, plurality(subopt_len, "", "s")); } else { switch (o125_tr111_opt[subopt].ftype) { case special: /* I may need to decode that properly one day */ proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s (%d byte%s)", subopt, o125_tr111_opt[subopt].text, subopt_len, plurality(subopt_len, "", "s")); break; case string: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2, "Suboption %d: %s = \"%s\"", subopt, o125_tr111_opt[subopt].text, tvb_format_stringzpad(tvb, suboptoff, subopt_len)); break; default: proto_tree_add_text(v_tree, tvb, optoff, subopt_len+2,"ERROR, please report: Unknown subopt type handler %d", subopt); break; } } optoff += (subopt_len + 2); return optoff; } /* PacketCable Multimedia Terminal Adapter device capabilities (option 60). Ref: PKT-SP-I05-021127 sections 8.2 and 10 */ #define PKT_MDC_TLV_OFF 10 /* These are ASCII-encoded hexadecimal digits. We use the raw hex equivalent for convenience. */ #define PKT_MDC_VERSION 0x3031 /* "01" */ #define PKT_MDC_TEL_END 0x3032 /* "02" */ #define PKT_MDC_TGT 0x3033 /* "03" */ #define PKT_MDC_HTTP_ACC 0x3034 /* "04" */ #define PKT_MDC_SYSLOG 0x3035 /* "05" */ #define PKT_MDC_NCS 0x3036 /* "06" */ #define PKT_MDC_PRI_LINE 0x3037 /* "07" */ #define PKT_MDC_VENDOR_TLV 0x3038 /* "08" */ #define PKT_MDC_NVRAM_STOR 0x3039 /* "09" */ #define PKT_MDC_PROV_REP 0x3041 /* "0A" */ #define PKT_MDC_PROV_REP_LC 0x3061 /* "0A" */ #define PKT_MDC_SUPP_CODECS 0x3042 /* "0B" */ #define PKT_MDC_SUPP_CODECS_LC 0x3062 /* "0b" */ #define PKT_MDC_SILENCE 0x3043 /* "0C" */ #define PKT_MDC_SILENCE_LC 0x3063 /* "0c" */ #define PKT_MDC_ECHO_CANCEL 0x3044 /* "0D" */ #define PKT_MDC_ECHO_CANCEL_LC 0x3064 /* "0d" */ #define PKT_MDC_RSVP 0x3045 /* "0E" */ #define PKT_MDC_RSVP_LC 0x3065 /* "0e" */ #define PKT_MDC_UGS_AD 0x3046 /* "0F" */ #define PKT_MDC_UGS_AD_LC 0x3066 /* "0f" */ #define PKT_MDC_IF_INDEX 0x3130 /* "10" */ #define PKT_MDC_FLOW_LOG 0x3131 /* "11" */ #define PKT_MDC_PROV_FLOWS 0x3132 /* "12" */ /* PacketCable 1.5: */ #define PKT_MDC_T38_VERSION 0x3133 /* "13" */ #define PKT_MDC_T38_EC 0x3134 /* "14" */ #define PKT_MDC_RFC2833_DTMF 0x3135 /* "15" */ #define PKT_MDC_VOICE_METRICS 0x3136 /* "16" */ #define PKT_MDC_MIBS 0x3137 /* "17" */ #define PKT_MDC_MGPI 0x3138 /* "18" */ static const value_string pkt_mdc_type_vals[] = { { PKT_MDC_VERSION, "PacketCable Version" }, { PKT_MDC_TEL_END, "Number Of Telephony Endpoints" }, { PKT_MDC_TGT, "TGT Support" }, { PKT_MDC_HTTP_ACC, "HTTP Download File Access Method Support" }, { PKT_MDC_SYSLOG, "MTA-24 Event SYSLOG Notification Support" }, { PKT_MDC_NCS, "NCS Service Flow Support" }, { PKT_MDC_PRI_LINE, "Primary Line Support" }, { PKT_MDC_VENDOR_TLV, "Vendor Specific TLV Type(s)" }, { PKT_MDC_NVRAM_STOR, "NVRAM Ticket/Session Keys Storage Support" }, { PKT_MDC_PROV_REP, "Provisioning Event Reporting Support" }, { PKT_MDC_PROV_REP_LC, "Provisioning Event Reporting Support" }, { PKT_MDC_SUPP_CODECS, "Supported CODEC(s)" }, { PKT_MDC_SUPP_CODECS_LC, "Supported CODEC(s)" }, { PKT_MDC_SILENCE, "Silence Suppression Support" }, { PKT_MDC_SILENCE_LC, "Silence Suppression Support" }, { PKT_MDC_ECHO_CANCEL, "Echo Cancellation Support" }, { PKT_MDC_ECHO_CANCEL_LC, "Echo Cancellation Support" }, { PKT_MDC_RSVP, "RSVP Support/ Reserved" }, { PKT_MDC_RSVP_LC, "RSVP Support/ Reserved" }, { PKT_MDC_UGS_AD, "UGS-AD Support" }, { PKT_MDC_UGS_AD_LC, "UGS-AD Support" }, { PKT_MDC_IF_INDEX, "MTA's \"ifIndex\" starting number in \"ifTable\"" }, { PKT_MDC_FLOW_LOG, "Provisioning Flow Logging Support" }, { PKT_MDC_PROV_FLOWS, "Supported Provisioning Flows" }, /* PacketCable 1.5: */ { PKT_MDC_T38_VERSION, "T38 Version Support" }, { PKT_MDC_T38_EC, "T38 Error Correction Support" }, { PKT_MDC_RFC2833_DTMF, "RFC 2833 DTMF Support" }, { PKT_MDC_VOICE_METRICS, "Voice Metrics Support" }, { PKT_MDC_MIBS, "MIB Support" }, { PKT_MDC_MGPI, "Multiple Grants Per Interval Support" }, { 0, NULL } }; static const value_string pkt_mdc_version_vals[] = { { 0x3030, "PacketCable 1.0" }, { 0x3031, "PacketCable 1.1/1.5" }, /* 1.5 replaces 1.1-1.3 */ { 0x3032, "PacketCable 1.2" }, { 0x3033, "PacketCable 1.3" }, { 0, NULL } }; static const value_string pkt_mdc_boolean_vals[] = { { 0x3030, "No" }, { 0x3031, "Yes" }, { 0, NULL } }; static const value_string pkt_mdc_codec_vals[] = { { 0x3031, "other" }, /* "01" */ { 0x3032, "unknown" }, { 0x3033, "G.729" }, { 0x3034, "reserved" }, { 0x3035, "G.729E" }, { 0x3036, "PCMU" }, { 0x3037, "G.726-32" }, { 0x3038, "G.728" }, { 0x3039, "PCMA" }, /* "09" */ { 0x3041, "G.726-16" }, /* "0A" */ { 0x3042, "G.726-24" }, { 0x3043, "G.726-40" }, { 0x3044, "iLBC" }, { 0x3045, "BV16" }, { 0x3046, "telephone-event" }, /* "0F" */ { 0, NULL } }; static const value_string pkt_mdc_t38_version_vals[] = { { 0x3030, "Unsupported" }, { 0x3031, "T.38 Version Zero" }, /* default */ { 0x3032, "T.38 Version One" }, { 0x3033, "T.38 Version Two" }, { 0x3035, "T.38 Version Three" }, { 0, NULL } }; static const value_string pkt_mdc_t38_ec_vals[] = { { 0x3030, "None" }, { 0x3031, "Redundancy" }, /* default */ { 0x3032, "FEC" }, { 0, NULL } }; static const value_string pkt_mdc_mib_orgs[] = { { 0x3030, "CableLabs" }, { 0x3031, "IETF" }, { 0x3032, "Reserved" }, { 0x3033, "Reserved" }, { 0x3034, "Reserved" }, { 0x3035, "Reserved" }, { 0x3036, "Reserved" }, { 0x3037, "Reserved" }, { 0x3038, "Reserved" }, { 0x3039, "Reserved" }, { 0, NULL } }; /* DOCSIS Cable Modem device capabilities (option 60). */ #define DOCS_CM_TLV_OFF 12 #define DOCS_CM_CONCAT_SUP 0x3031 /* "01" */ #define DOCS_CM_DOCSIS_VER 0x3032 /* "02" */ #define DOCS_CM_FRAG_SUP 0x3033 /* "03" */ #define DOCS_CM_PHS_SUP 0x3034 /* "04" */ #define DOCS_CM_IGMP_SUP 0x3035 /* "05" */ #define DOCS_CM_PRIV_SUP 0x3036 /* "06" */ #define DOCS_CM_DSAID_SUP 0x3037 /* "07" */ #define DOCS_CM_USID_SUP 0x3038 /* "08" */ #define DOCS_CM_FILT_SUP 0x3039 /* "09" */ #define DOCS_CM_TET_MI 0x3041 /* "0A" */ #define DOCS_CM_TET_MI_LC 0x3061 /* "0a" */ #define DOCS_CM_TET 0x3042 /* "0B" */ #define DOCS_CM_TET_LC 0x3062 /* "0b" */ #define DOCS_CM_DCC_SUP 0x3043 /* "0C" */ #define DOCS_CM_DCC_SUP_LC 0x3063 /* "0c" */ #define DOCS_CM_IPFILT_SUP 0x3044 /* "0D" */ #define DOCS_CM_IPFILT_SUP_LC 0x3064 /* "0d" */ #define DOCS_CM_LLCFILT_SUP 0x3045 /* "0E" */ #define DOCS_CM_LLCFILT_SUP_LC 0x3065 /* "0e" */ static const value_string docs_cm_type_vals[] = { { DOCS_CM_CONCAT_SUP, "Concatenation Support" }, { DOCS_CM_DOCSIS_VER, "DOCSIS Version" }, { DOCS_CM_FRAG_SUP, "Fragmentation Support" }, { DOCS_CM_PHS_SUP, "PHS Support" }, { DOCS_CM_IGMP_SUP, "IGMP Support" }, { DOCS_CM_PRIV_SUP, "Privacy Support" }, { DOCS_CM_DSAID_SUP, "Downstream SAID Support" }, { DOCS_CM_USID_SUP, "Upstream SID Support" }, { DOCS_CM_FILT_SUP, "Optional Filtering Support" }, { DOCS_CM_TET_MI, "Transmit Equalizer Taps per Modulation Interval" }, { DOCS_CM_TET_MI_LC, "Transmit Equalizer Taps per Modulation Interval" }, { DOCS_CM_TET, "Number of Transmit Equalizer Taps" }, { DOCS_CM_TET_LC, "Number of Transmit Equalizer Taps" }, { DOCS_CM_DCC_SUP, "DCC Support" }, { DOCS_CM_DCC_SUP_LC, "DCC Support" }, { DOCS_CM_IPFILT_SUP, "IP Filters Support" }, { DOCS_CM_IPFILT_SUP_LC, "IP Filters Support" }, { DOCS_CM_LLCFILT_SUP, "LLC Filters Support" }, { DOCS_CM_LLCFILT_SUP_LC, "LLC Filters Support" }, { 0, NULL } }; static const value_string docs_cm_version_vals[] = { { 0x3030, "DOCSIS 1.0" }, { 0x3031, "DOCSIS 1.1" }, { 0x3032, "DOCSIS 2.0" }, { 0, NULL } }; static const value_string docs_cm_privacy_vals[] = { { 0x3030, "BPI Support" }, { 0x3031, "BPI Plus Support" }, { 0, NULL } }; static const value_string pkt_mdc_supp_flow_vals[] = { { 1 << 0, "Secure Flow (Full Secure Provisioning Flow)" }, { 1 << 1, "Hybrid Flow" }, { 1 << 2, "Basic Flow" }, { 0, NULL } }; #define PKT_MDC_MIB_CL 0x3030 static const value_string pkt_mdc_cl_mib_vals[] = { { 1 << 0, "PacketCable 1.5 MTA MIB" }, { 1 << 1, "PacketCable 1.5 Signaling MIB" }, { 1 << 2, "PacketCable 1.5 Management Event MIB" }, { 1 << 3, "PacketCable 1.5 MTA Extension MIB" }, { 1 << 4, "PacketCable 1.5 Signaling Extension MIB" }, { 1 << 5, "PacketCable 1.5 MEM Extension MIB" }, { 1 << 6, "Reserved" }, { 1 << 7, "Reserved" }, { 0, NULL } }; #define PKT_MDC_MIB_IETF 0x3031 static const value_string pkt_mdc_ietf_mib_vals[] = { { 1 << 0, "IETF MTA MIB" }, { 1 << 1, "IETF Signaling MIB" }, { 1 << 2, "IETF Management Event MIB" }, { 1 << 3, "Reserved" }, { 1 << 4, "Reserved" }, { 1 << 5, "Reserved" }, { 1 << 6, "Reserved" }, { 1 << 7, "Reserved" }, { 0, NULL } }; static void dissect_packetcable_mta_cap(proto_tree *v_tree, tvbuff_t *tvb, int voff, int len) { guint16 raw_val; unsigned long flow_val = 0; int off = PKT_MDC_TLV_OFF + voff; int subopt_off, max_len; guint tlv_len, i, mib_val; guint8 asc_val[3] = " ", flow_val_str[5]; char bit_fld[64]; proto_item *ti, *mib_ti; proto_tree *subtree, *subtree2; tvb_memcpy (tvb, asc_val, off, 2); if (sscanf((gchar*)asc_val, "%x", &tlv_len) != 1 || tlv_len > 0xff) { proto_tree_add_text(v_tree, tvb, off, len - off, "Bogus length: %s", asc_val); return; } else { proto_tree_add_uint_format_value(v_tree, hf_bootp_pkt_mtacap_len, tvb, off, 2, tlv_len, "%d", tlv_len); off += 2; while (off - voff < len) { /* Type */ raw_val = tvb_get_ntohs (tvb, off); /* Length */ tvb_memcpy(tvb, asc_val, off + 2, 2); if (sscanf((gchar*)asc_val, "%x", &tlv_len) != 1 || tlv_len < 1) { proto_tree_add_text(v_tree, tvb, off, len - off, "[Bogus length: %s]", asc_val); return; } else { /* Value(s) */ ti = proto_tree_add_text(v_tree, tvb, off, (tlv_len * 2) + 4, "0x%s: %s = ", tvb_format_text(tvb, off, 2), val_to_str(raw_val, pkt_mdc_type_vals, "unknown")); switch (raw_val) { case PKT_MDC_VERSION: raw_val = tvb_get_ntohs(tvb, off + 4); proto_item_append_text(ti, "%s (%s)", val_to_str(raw_val, pkt_mdc_version_vals, "Reserved"), tvb_format_stringzpad(tvb, off + 4, 2) ); break; case PKT_MDC_TEL_END: case PKT_MDC_IF_INDEX: proto_item_append_text(ti, "%s", tvb_format_stringzpad(tvb, off + 4, 2) ); break; case PKT_MDC_TGT: case PKT_MDC_HTTP_ACC: case PKT_MDC_SYSLOG: case PKT_MDC_NCS: case PKT_MDC_PRI_LINE: case PKT_MDC_NVRAM_STOR: case PKT_MDC_PROV_REP: case PKT_MDC_PROV_REP_LC: case PKT_MDC_SILENCE: case PKT_MDC_SILENCE_LC: case PKT_MDC_ECHO_CANCEL: case PKT_MDC_ECHO_CANCEL_LC: case PKT_MDC_RSVP: case PKT_MDC_RSVP_LC: case PKT_MDC_UGS_AD: case PKT_MDC_UGS_AD_LC: case PKT_MDC_FLOW_LOG: case PKT_MDC_RFC2833_DTMF: case PKT_MDC_VOICE_METRICS: raw_val = tvb_get_ntohs(tvb, off + 4); proto_item_append_text(ti, "%s (%s)", val_to_str(raw_val, pkt_mdc_boolean_vals, "unknown"), tvb_format_stringzpad(tvb, off + 4, 2) ); break; case PKT_MDC_SUPP_CODECS: case PKT_MDC_SUPP_CODECS_LC: for (i = 0; i < tlv_len; i++) { raw_val = tvb_get_ntohs(tvb, off + 4 + (i * 2) ); proto_item_append_text(ti, "%s%s (%s)", plurality(i + 1, "", ", "), val_to_str(raw_val, pkt_mdc_codec_vals, "unknown"), tvb_format_stringzpad(tvb, off + 4 + (i * 2), 2) ); } break; case PKT_MDC_PROV_FLOWS: tvb_memcpy(tvb, flow_val_str, off + 4, 4); flow_val_str[4] = '\0'; flow_val = strtoul((gchar*)flow_val_str, NULL, 16); proto_item_append_text(ti, "0x%04lx", flow_val); break; case PKT_MDC_T38_VERSION: raw_val = tvb_get_ntohs(tvb, off + 4); proto_item_append_text(ti, "%s (%s)", val_to_str(raw_val, pkt_mdc_t38_version_vals, "unknown"), tvb_format_stringzpad(tvb, off + 4, 2) ); break; case PKT_MDC_T38_EC: raw_val = tvb_get_ntohs(tvb, off + 4); proto_item_append_text(ti, "%s (%s)", val_to_str(raw_val, pkt_mdc_t38_ec_vals, "unknown"), tvb_format_stringzpad(tvb, off + 4, 2) ); break; case PKT_MDC_MIBS: break; case PKT_MDC_VENDOR_TLV: default: proto_item_append_text(ti, "%s", tvb_format_stringzpad(tvb, off + 4, tlv_len * 2) ); break; } } subtree = proto_item_add_subtree(ti, ett_bootp_option); if (raw_val == PKT_MDC_PROV_FLOWS) { for (i = 0 ; i < 3; i++) { if (flow_val & pkt_mdc_supp_flow_vals[i].value) { decode_bitfield_value(bit_fld, flow_val, pkt_mdc_supp_flow_vals[i].value, 16); proto_tree_add_text(subtree, tvb, off + 4, 4, "%s%s", bit_fld, pkt_mdc_supp_flow_vals[i].strptr); } } } else if (raw_val == PKT_MDC_MIBS) { /* 17 06 02 00 38 02 01 07 */ subopt_off = off + 4; max_len = subopt_off + (tlv_len * 2); while (subopt_off < max_len) { raw_val = tvb_get_ntohs(tvb, subopt_off); if (raw_val != 0x3032) { /* We only know how to handle a length of 2 */ tvb_memcpy(tvb, asc_val, subopt_off, 2); proto_tree_add_text(subtree, tvb, subopt_off, 2, "[Bogus length: %s]", asc_val); return; } subopt_off += 2; raw_val = tvb_get_ntohs(tvb, subopt_off); tvb_memcpy(tvb, asc_val, subopt_off, 2); mib_ti = proto_tree_add_text(subtree, tvb, subopt_off, 2, "%s (%s)", val_to_str(raw_val, pkt_mdc_mib_orgs, "Unknown"), asc_val); if (subopt_off > off + 4 + 2) { proto_item_append_text(ti, ", "); } proto_item_append_text(ti, "%s", val_to_str(raw_val, pkt_mdc_mib_orgs, "Unknown")); subopt_off += 2; tvb_memcpy(tvb, asc_val, subopt_off, 2); if (sscanf((gchar*)asc_val, "%x", &mib_val) != 1) { proto_tree_add_text(v_tree, tvb, subopt_off, 2, "[Bogus bitfield: %s]", asc_val); return; } switch (raw_val) { case PKT_MDC_MIB_CL: subtree2 = proto_item_add_subtree(mib_ti, ett_bootp_option); for (i = 0; i < 8; i++) { if (mib_val & pkt_mdc_cl_mib_vals[i].value) { decode_bitfield_value(bit_fld, mib_val, pkt_mdc_cl_mib_vals[i].value, 8); proto_tree_add_text(subtree2, tvb, subopt_off, 2, "%s%s", bit_fld, pkt_mdc_cl_mib_vals[i].strptr); } } break; case PKT_MDC_MIB_IETF: subtree2 = proto_item_add_subtree(mib_ti, ett_bootp_option); for (i = 0; i < 8; i++) { if (mib_val & pkt_mdc_ietf_mib_vals[i].value) { decode_bitfield_value(bit_fld, mib_val, pkt_mdc_ietf_mib_vals[i].value, 8); proto_tree_add_text(subtree2, tvb, subopt_off, 2, "%s%s", bit_fld, pkt_mdc_ietf_mib_vals[i].strptr); } } break; default: break; } subopt_off += 2; } } off += (tlv_len * 2) + 4; } } } static void dissect_docsis_cm_cap(proto_tree *v_tree, tvbuff_t *tvb, int voff, int len) { unsigned long raw_val; int off = DOCS_CM_TLV_OFF + voff; guint tlv_len, i; guint8 asc_val[4] = " "; proto_item *ti; tvb_memcpy (tvb, asc_val, off, 2); if (sscanf((gchar*)asc_val, "%x", &tlv_len) != 1 || tlv_len < 1) { proto_tree_add_text(v_tree, tvb, off, len - off, "Bogus length: %s", asc_val); return; } else { proto_tree_add_uint_format_value(v_tree, hf_bootp_docsis_cmcap_len, tvb, off, 2, tlv_len, "%d", tlv_len); off += 2; while (off - voff < len) { /* Type */ raw_val = tvb_get_ntohs (tvb, off); /* Length */ tvb_memcpy(tvb, asc_val, off + 2, 2); if (sscanf((gchar*)asc_val, "%x", &tlv_len) != 1 || tlv_len > 0xff) { proto_tree_add_text(v_tree, tvb, off, len - off, "[Bogus length: %s]", asc_val); return; } else { /* Value(s) */ ti = proto_tree_add_text(v_tree, tvb, off, (tlv_len * 2) + 4, "0x%s: %s = ", tvb_format_text(tvb, off, 2), val_to_str(raw_val, docs_cm_type_vals, "unknown")); switch (raw_val) { case DOCS_CM_CONCAT_SUP: case DOCS_CM_FRAG_SUP: case DOCS_CM_PHS_SUP: case DOCS_CM_IGMP_SUP: case DOCS_CM_DCC_SUP: case DOCS_CM_DCC_SUP_LC: for (i = 0; i < tlv_len; i++) { raw_val = tvb_get_ntohs(tvb, off + 4 + (i * 2) ); proto_item_append_text(ti, "%s%s (%s)", plurality(i + 1, "", ", "), val_to_str(raw_val, pkt_mdc_boolean_vals, "unknown"), tvb_format_text(tvb, off + 4 + (i * 2), 2) ); } break; case DOCS_CM_DOCSIS_VER: raw_val = tvb_get_ntohs(tvb, off + 4); proto_item_append_text(ti, "%s (%s)", val_to_str(raw_val, docs_cm_version_vals, "Reserved"), tvb_format_text(tvb, off + 4, 2) ); break; case DOCS_CM_PRIV_SUP: raw_val = tvb_get_ntohs(tvb, off + 4); proto_item_append_text(ti, "%s (%s)", val_to_str(raw_val, docs_cm_privacy_vals, "Reserved"), tvb_format_text(tvb, off + 4, 2) ); break; case DOCS_CM_DSAID_SUP: case DOCS_CM_USID_SUP: case DOCS_CM_TET_MI: case DOCS_CM_TET_MI_LC: case DOCS_CM_TET: case DOCS_CM_TET_LC: tvb_memcpy (tvb, asc_val, off + 4, 2); raw_val = strtoul((gchar*)asc_val, NULL, 16); proto_item_append_text(ti, "%lu", raw_val); break; case DOCS_CM_IPFILT_SUP: case DOCS_CM_IPFILT_SUP_LC: case DOCS_CM_LLCFILT_SUP: case DOCS_CM_LLCFILT_SUP_LC: tvb_memcpy (tvb, asc_val, off + 4, 4); raw_val = strtoul((gchar*)asc_val, NULL, 16); proto_item_append_text(ti, "%lu", raw_val); break; case DOCS_CM_FILT_SUP: tvb_memcpy (tvb, asc_val, off + 4, 2); raw_val = strtoul((gchar*)asc_val, NULL, 16); if (raw_val & 0x01) proto_item_append_text(ti, "802.1p filtering"); if (raw_val & 0x02) { if (raw_val & 0x01) proto_item_append_text(ti, ", "); proto_item_append_text(ti, "802.1Q filtering"); } if (!(raw_val & 0x03)) proto_item_append_text(ti, "None"); proto_item_append_text(ti, " (0x%02lx)", raw_val); break; } } off += (tlv_len * 2) + 4; } } } /* Definitions specific to PKT-SP-PROV-I05-021127 begin with "PKT_CCC_I05". Definitions specific to IETF draft 5 and RFC 3495 begin with "PKT_CCC_IETF". Shared definitions begin with "PKT_CCC". */ #define PKT_CCC_PRI_DHCP 1 #define PKT_CCC_SEC_DHCP 2 #define PKT_CCC_I05_SNMP 3 #define PKT_CCC_IETF_PROV_SRV 3 #define PKT_CCC_I05_PRI_DNS 4 #define PKT_CCC_IETF_AS_KRB 4 #define PKT_CCC_I05_SEC_DNS 5 #define PKT_CCC_IETF_AP_KRB 5 #define PKT_CCC_KRB_REALM 6 #define PKT_CCC_TGT_FLAG 7 #define PKT_CCC_PROV_TIMER 8 #define PKT_CCC_CMS_FQDN 9 #define PKT_CCC_IETF_SEC_TKT 9 #define PKT_CCC_AS_KRB 10 #define PKT_CCC_AP_KRB 11 #define PKT_CCC_MTA_KRB_CLEAR 12 static const value_string pkt_i05_ccc_opt_vals[] = { { PKT_CCC_PRI_DHCP, "Primary DHCP Server" }, { PKT_CCC_SEC_DHCP, "Secondary DHCP Server" }, { PKT_CCC_I05_SNMP, "SNMP Entity" }, { PKT_CCC_I05_PRI_DNS, "Primary DNS Server" }, { PKT_CCC_I05_SEC_DNS, "Secondary DNS Server" }, { PKT_CCC_KRB_REALM, "Kerberos Realm" }, { PKT_CCC_TGT_FLAG, "MTA should fetch TGT?" }, { PKT_CCC_PROV_TIMER, "Provisioning Timer" }, { PKT_CCC_CMS_FQDN, "CMS FQDN" }, { PKT_CCC_AS_KRB, "AS-REQ/AS-REP Backoff and Retry" }, { PKT_CCC_AP_KRB, "AP-REQ/AP-REP Backoff and Retry" }, { PKT_CCC_MTA_KRB_CLEAR, "MTA should clear Kerberos tickets?" }, { 0, NULL }, }; static const value_string pkt_draft5_ccc_opt_vals[] = { { PKT_CCC_PRI_DHCP, "TSP's Primary DHCP Server" }, { PKT_CCC_SEC_DHCP, "TSP's Secondary DHCP Server" }, { PKT_CCC_IETF_PROV_SRV, "TSP's Provisioning Server" }, { PKT_CCC_IETF_AS_KRB, "TSP's AS-REQ/AS-REP Backoff and Retry" }, { PKT_CCC_IETF_AP_KRB, "TSP's AP-REQ/AP-REP Backoff and Retry" }, { PKT_CCC_KRB_REALM, "TSP's Kerberos Realm Name" }, { PKT_CCC_TGT_FLAG, "TSP's Ticket Granting Server Utilization" }, { PKT_CCC_PROV_TIMER, "TSP's Provisioning Timer Value" }, { PKT_CCC_IETF_SEC_TKT, "PacketCable Security Ticket Control" }, { 0, NULL }, }; static const value_string pkt_i05_ccc_ticket_ctl_vals[] = { { 1, "Invalidate Provisioning Application Server's ticket" }, { 2, "Invalidate all CMS Application Server tickets" }, { 3, "Invalidate all Application Server tickets" }, { 0, NULL }, }; static int dissect_packetcable_i05_ccc(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend) { int suboptoff = optoff; guint8 subopt, subopt_len, fetch_tgt, timer_val, ticket_ctl; proto_tree *pkt_s_tree; proto_item *vti; subopt = tvb_get_guint8(tvb, optoff); suboptoff++; if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, optoff); suboptoff++; vti = proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Suboption %u: %s: ", subopt, val_to_str(subopt, pkt_i05_ccc_opt_vals, "unknown/reserved") ); switch (subopt) { case PKT_CCC_PRI_DHCP: /* String values */ case PKT_CCC_SEC_DHCP: case PKT_CCC_I05_SNMP: case PKT_CCC_I05_PRI_DNS: case PKT_CCC_I05_SEC_DNS: case PKT_CCC_KRB_REALM: case PKT_CCC_CMS_FQDN: proto_item_append_text(vti, "%s (%u byte%s)", tvb_format_stringzpad(tvb, suboptoff, subopt_len), subopt_len, plurality(subopt_len, "", "s") ); suboptoff += subopt_len; break; case PKT_CCC_TGT_FLAG: if (suboptoff+1 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } fetch_tgt = tvb_get_guint8(tvb, suboptoff); proto_item_append_text(vti, "%s (%u byte%s%s)", fetch_tgt ? "Yes" : "No", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 1 ? " [Invalid]" : ""); suboptoff += subopt_len; break; case PKT_CCC_PROV_TIMER: if (suboptoff+1 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } timer_val = tvb_get_guint8(tvb, suboptoff); proto_item_append_text(vti, "%u%s (%u byte%s%s)", timer_val, timer_val > 30 ? " [Invalid]" : "", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 1 ? " [Invalid]" : ""); suboptoff += subopt_len; break; case PKT_CCC_AS_KRB: if (suboptoff+12 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } proto_item_append_text(vti, "(%u byte%s%s)", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 12 ? " [Invalid]" : ""); if (subopt_len == 12) { pkt_s_tree = proto_item_add_subtree(vti, ett_bootp_option); proto_tree_add_text(pkt_s_tree, tvb, suboptoff, 4, "pktcMtaDevRealmUnsolicitedKeyNomTimeout: %u", tvb_get_ntohl(tvb, suboptoff)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 4, 4, "pktcMtaDevRealmUnsolicitedKeyMaxTimeout: %u", tvb_get_ntohl(tvb, suboptoff + 4)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 8, 4, "pktcMtaDevRealmUnsolicitedKeyMaxRetries: %u", tvb_get_ntohl(tvb, suboptoff + 8)); } suboptoff += subopt_len; break; case PKT_CCC_AP_KRB: if (suboptoff+12 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } proto_item_append_text(vti, "(%u byte%s%s)", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 12 ? " [Invalid]" : ""); if (subopt_len == 12) { pkt_s_tree = proto_item_add_subtree(vti, ett_bootp_option); proto_tree_add_text(pkt_s_tree, tvb, suboptoff, 4, "pktcMtaDevProvUnsolicitedKeyNomTimeout: %u", tvb_get_ntohl(tvb, suboptoff)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 4, 4, "pktcMtaDevProvUnsolicitedKeyMaxTimeout: %u", tvb_get_ntohl(tvb, suboptoff + 4)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 8, 4, "pktcMtaDevProvUnsolicitedKeyMaxRetries: %u", tvb_get_ntohl(tvb, suboptoff + 8)); } suboptoff += subopt_len; break; case PKT_CCC_MTA_KRB_CLEAR: if (suboptoff+1 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } ticket_ctl = tvb_get_guint8(tvb, suboptoff); proto_item_append_text(vti, "%s (%u) (%u byte%s%s)", val_to_str (ticket_ctl, pkt_i05_ccc_ticket_ctl_vals, "unknown/invalid"), ticket_ctl, subopt_len, plurality(subopt_len, "", "s"), subopt_len != 1 ? " [Invalid]" : ""); suboptoff += subopt_len; break; default: suboptoff += subopt_len; break; } return suboptoff; } static const value_string sec_tcm_vals[] = { { 1 << 0, "PacketCable Provisioning Server" }, { 1 << 1, "All PacketCable Call Management Servers" }, { 0, NULL } }; static int dissect_packetcable_ietf_ccc(proto_tree *v_tree, tvbuff_t *tvb, int optoff, int optend, int revision) { int suboptoff = optoff; guint8 subopt, subopt_len; guint32 ipv4addr; guint8 prov_type, fetch_tgt, timer_val; guint16 sec_tcm; proto_tree *pkt_s_tree; proto_item *vti; int max_timer_val = 255, i; const char *dns_name; char bit_fld[24]; subopt = tvb_get_guint8(tvb, suboptoff); suboptoff++; if (suboptoff >= optend) { proto_tree_add_text(v_tree, tvb, optoff, 1, "Suboption %d: no room left in option for suboption length", subopt); return (optend); } subopt_len = tvb_get_guint8(tvb, suboptoff); suboptoff++; vti = proto_tree_add_text(v_tree, tvb, optoff, subopt_len + 2, "Suboption %u: %s: ", subopt, val_to_str(subopt, pkt_draft5_ccc_opt_vals, "unknown/reserved") ); switch (subopt) { case PKT_CCC_PRI_DHCP: /* IPv4 values */ case PKT_CCC_SEC_DHCP: if (suboptoff+4 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } ipv4addr = tvb_get_ipv4(tvb, suboptoff); proto_item_append_text(vti, "%s (%u byte%s%s)", ip_to_str((guint8 *)&ipv4addr), subopt_len, plurality(subopt_len, "", "s"), subopt_len != 4 ? " [Invalid]" : ""); suboptoff += subopt_len; break; case PKT_CCC_IETF_PROV_SRV: if (suboptoff+1 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } prov_type = tvb_get_guint8(tvb, suboptoff); suboptoff += 1; switch (prov_type) { case 0: get_dns_name(tvb, suboptoff, subopt_len, suboptoff, &dns_name); proto_item_append_text(vti, "%s (%u byte%s)", dns_name, subopt_len - 1, plurality(subopt_len, "", "s") ); break; case 1: if (suboptoff+4 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } ipv4addr = tvb_get_ipv4(tvb, suboptoff); proto_item_append_text(vti, "%s (%u byte%s%s)", ip_to_str((guint8 *)&ipv4addr), subopt_len, plurality(subopt_len, "", "s"), subopt_len != 5 ? " [Invalid]" : ""); break; default: proto_item_append_text(vti, "Invalid type: %u (%u byte%s)", prov_type, subopt_len, plurality(subopt_len, "", "s") ); break; } suboptoff += subopt_len - 1; break; case PKT_CCC_IETF_AS_KRB: if (suboptoff+12 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } proto_item_append_text(vti, "(%u byte%s%s)", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 12 ? " [Invalid]" : ""); if (subopt_len == 12) { pkt_s_tree = proto_item_add_subtree(vti, ett_bootp_option); proto_tree_add_text(pkt_s_tree, tvb, suboptoff, 4, "pktcMtaDevRealmUnsolicitedKeyNomTimeout: %u", tvb_get_ntohl(tvb, suboptoff)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 4, 4, "pktcMtaDevRealmUnsolicitedKeyMaxTimeout: %u", tvb_get_ntohl(tvb, suboptoff + 4)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 8, 4, "pktcMtaDevRealmUnsolicitedKeyMaxRetries: %u", tvb_get_ntohl(tvb, suboptoff + 8)); } suboptoff += subopt_len; break; case PKT_CCC_IETF_AP_KRB: proto_item_append_text(vti, "(%u byte%s%s)", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 12 ? " [Invalid]" : ""); if (subopt_len == 12) { pkt_s_tree = proto_item_add_subtree(vti, ett_bootp_option); proto_tree_add_text(pkt_s_tree, tvb, suboptoff, 4, "pktcMtaDevProvUnsolicitedKeyNomTimeout: %u", tvb_get_ntohl(tvb, suboptoff)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 4, 4, "pktcMtaDevProvUnsolicitedKeyMaxTimeout: %u", tvb_get_ntohl(tvb, suboptoff + 4)); proto_tree_add_text(pkt_s_tree, tvb, suboptoff + 8, 4, "pktcMtaDevProvUnsolicitedKeyMaxRetries: %u", tvb_get_ntohl(tvb, suboptoff + 8)); } suboptoff += subopt_len; break; case PKT_CCC_KRB_REALM: /* String values */ get_dns_name(tvb, suboptoff, subopt_len, suboptoff, &dns_name); proto_item_append_text(vti, "%s (%u byte%s)", dns_name, subopt_len, plurality(subopt_len, "", "s") ); suboptoff += subopt_len; break; case PKT_CCC_TGT_FLAG: if (suboptoff+1 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } fetch_tgt = tvb_get_guint8(tvb, suboptoff); proto_item_append_text(vti, "%s (%u byte%s%s)", fetch_tgt ? "Yes" : "No", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 1 ? " [Invalid]" : ""); suboptoff += 1; break; case PKT_CCC_PROV_TIMER: if (suboptoff+1 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } if (revision == PACKETCABLE_CCC_DRAFT5) max_timer_val = 30; timer_val = tvb_get_guint8(tvb, suboptoff); proto_item_append_text(vti, "%u%s (%u byte%s%s)", timer_val, timer_val > max_timer_val ? " [Invalid]" : "", subopt_len, plurality(subopt_len, "", "s"), subopt_len != 1 ? " [Invalid]" : ""); suboptoff += 1; break; case PKT_CCC_IETF_SEC_TKT: if (suboptoff+2 > optend) { proto_item_append_text(vti, "no room left in option for suboption value"); return (optend); } sec_tcm = tvb_get_ntohs(tvb, suboptoff); proto_item_append_text(vti, "0x%04x (%u byte%s%s)", sec_tcm, subopt_len, plurality(subopt_len, "", "s"), subopt_len != 2 ? " [Invalid]" : ""); if (subopt_len == 2) { pkt_s_tree = proto_item_add_subtree(vti, ett_bootp_option); for (i = 0; i < 2; i++) { if (sec_tcm & sec_tcm_vals[i].value) { decode_bitfield_value(bit_fld, sec_tcm, sec_tcm_vals[i].value, 16); proto_tree_add_text(pkt_s_tree, tvb, suboptoff, 2, "%sInvalidate %s", bit_fld, sec_tcm_vals[i].strptr); } } } suboptoff += subopt_len; break; default: suboptoff += subopt_len; break; } return suboptoff; } #define BOOTREQUEST 1 #define BOOTREPLY 2 static const value_string op_vals[] = { { BOOTREQUEST, "Boot Request" }, { BOOTREPLY, "Boot Reply" }, { 0, NULL } }; static void dissect_bootp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *bp_tree; proto_item *ti; proto_tree *flag_tree; proto_item *fi, *hidden_item; guint8 op; guint8 htype, hlen; const guint8 *haddr; int voff, eoff, tmpvoff; /* vendor offset, end offset */ guint32 ip_addr; gboolean at_end; const char *dhcp_type = NULL; const guint8 *vendor_class_id = NULL; guint16 flags, secs; int offset_delta; guint8 overload = 0; /* DHCP option overload */ if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "BOOTP"); if (check_col(pinfo->cinfo, COL_INFO)) { /* * In case we throw an exception fetching the opcode, etc. */ col_clear(pinfo->cinfo, COL_INFO); } op = tvb_get_guint8(tvb, 0); htype = tvb_get_guint8(tvb, 1); hlen = tvb_get_guint8(tvb, 2); if (check_col(pinfo->cinfo, COL_INFO)) { switch (op) { case BOOTREQUEST: if ((htype == ARPHRD_ETHER || htype == ARPHRD_IEEE802) && hlen == 6) col_add_fstr(pinfo->cinfo, COL_INFO, "Boot Request from %s (%s)", arphrdaddr_to_str(tvb_get_ptr(tvb, 28, hlen), hlen, htype), get_ether_name(tvb_get_ptr(tvb, 28, hlen))); else col_add_fstr(pinfo->cinfo, COL_INFO, "Boot Request from %s", arphrdaddr_to_str(tvb_get_ptr(tvb, 28, hlen), hlen, htype)); break; case BOOTREPLY: col_set_str(pinfo->cinfo, COL_INFO, "Boot Reply"); break; default: col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown BOOTP message type (%u)", op); break; } } voff = VENDOR_INFO_OFFSET; /* rfc2132 says it SHOULD exist, not that it MUST exist */ if (tvb_bytes_exist(tvb, voff, 4) && (tvb_get_ntohl(tvb, voff) == 0x63825363)) { voff += 4; } else { voff += 64; } eoff = tvb_reported_length(tvb); /* * In the first pass, we just look for the DHCP message type * and Vendor class identifier options. */ tmpvoff = voff; at_end = FALSE; while (tmpvoff < eoff && !at_end) { offset_delta = bootp_option(tvb, 0, tmpvoff, eoff, TRUE, &at_end, &dhcp_type, &vendor_class_id, &overload); if (offset_delta <= 0) { THROW(ReportedBoundsError); } tmpvoff += offset_delta; } /* * If there was a DHCP message type option, flag this packet * as DHCP. */ if (dhcp_type != NULL) { /* * Yes, this is a DHCP packet, and "dhcp_type" is the * packet type. */ if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "DHCP"); if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "DHCP %-8s - Transaction ID 0x%x", dhcp_type, tvb_get_ntohl(tvb, 4)); tap_queue_packet( bootp_dhcp_tap, pinfo, dhcp_type); } /* * If we're not building the protocol tree, we don't need to * make a second pass. */ if (tree == NULL) return; /* * OK, now build the protocol tree. */ ti = proto_tree_add_item(tree, proto_bootp, tvb, 0, -1, FALSE); bp_tree = proto_item_add_subtree(ti, ett_bootp); proto_tree_add_uint(bp_tree, hf_bootp_type, tvb, 0, 1, op); proto_tree_add_uint_format_value(bp_tree, hf_bootp_hw_type, tvb, 1, 1, htype, "%s", arphrdtype_to_str(htype, "Unknown (0x%02x)")); proto_tree_add_uint(bp_tree, hf_bootp_hw_len, tvb, 2, 1, hlen); proto_tree_add_item(bp_tree, hf_bootp_hops, tvb, 3, 1, FALSE); proto_tree_add_item(bp_tree, hf_bootp_id, tvb, 4, 4, FALSE); /* * Windows (98, XP and Vista tested) sends the "secs" value on * the wire formatted as little-endian. See if the LE value * makes sense. */ secs = tvb_get_letohs(tvb, 8); if (secs > 0 && secs <= 0xff) { proto_tree_add_uint_format(bp_tree, hf_bootp_secs, tvb, 8, 2, secs, "Seconds elapsed: %u (little endian bug?)", secs); } else { proto_tree_add_item(bp_tree, hf_bootp_secs, tvb, 8, 2, FALSE); } flags = tvb_get_ntohs(tvb, 10); fi = proto_tree_add_uint(bp_tree, hf_bootp_flags, tvb, 10, 2, flags); proto_item_append_text(fi, " (%s)", (flags & BOOTP_BC) ? "Broadcast" : "Unicast"); flag_tree = proto_item_add_subtree(fi, ett_bootp_flags); proto_tree_add_boolean(flag_tree, hf_bootp_flags_broadcast, tvb, 10, 2, flags); proto_tree_add_uint(flag_tree, hf_bootp_flags_reserved, tvb, 10, 2, flags); proto_tree_add_item(bp_tree, hf_bootp_ip_client, tvb, 12, 4, FALSE); proto_tree_add_item(bp_tree, hf_bootp_ip_your, tvb, 16, 4, FALSE); proto_tree_add_item(bp_tree, hf_bootp_ip_server, tvb, 20, 4, FALSE); proto_tree_add_item(bp_tree, hf_bootp_ip_relay, tvb, 24, 4, FALSE); if (hlen > 0 && hlen <= 16) { haddr = tvb_get_ptr(tvb, 28, hlen); if ((htype == ARPHRD_ETHER || htype == ARPHRD_IEEE802) && hlen == 6) proto_tree_add_item(bp_tree, hf_bootp_hw_ether_addr, tvb, 28, 6, FALSE); else /* The chaddr element is 16 bytes in length, although only the first hlen bytes are used */ proto_tree_add_bytes_format_value(bp_tree, hf_bootp_hw_addr, tvb, 28, 16, haddr, "%s", arphrdaddr_to_str(haddr, hlen, htype)); if ((16 - hlen) > 0) proto_tree_add_item(bp_tree, hf_bootp_hw_addr_padding, tvb, 28+hlen, 16-hlen, FALSE); } else { proto_tree_add_text(bp_tree, tvb, 28, 16, "Client address not given"); } /* The server host name is optional */ if (tvb_get_guint8(tvb, SERVER_NAME_OFFSET) != '\0') { if (overload & OPT_OVERLOAD_SNAME) { proto_tree_add_text (bp_tree, tvb, SERVER_NAME_OFFSET, SERVER_NAME_LEN, "Server name option overloaded by DHCP"); } else { proto_tree_add_item(bp_tree, hf_bootp_server, tvb, SERVER_NAME_OFFSET, SERVER_NAME_LEN, FALSE); } } else { proto_tree_add_string_format(bp_tree, hf_bootp_server, tvb, SERVER_NAME_OFFSET, SERVER_NAME_LEN, (const gchar*)tvb_get_ptr(tvb, SERVER_NAME_OFFSET, 1), "Server host name not given"); } /* Boot file */ if (tvb_get_guint8(tvb, FILE_NAME_OFFSET) != '\0') { if (overload & OPT_OVERLOAD_FILE) { proto_tree_add_text (bp_tree, tvb, FILE_NAME_OFFSET, FILE_NAME_LEN, "Boot file name option overloaded by DHCP"); } else { proto_tree_add_item(bp_tree, hf_bootp_file, tvb, FILE_NAME_OFFSET, FILE_NAME_LEN, FALSE); } } else { proto_tree_add_string_format(bp_tree, hf_bootp_file, tvb, FILE_NAME_OFFSET, FILE_NAME_LEN, (const gchar*)tvb_get_ptr(tvb, FILE_NAME_OFFSET, 1), "Boot file name not given"); } voff = VENDOR_INFO_OFFSET; if (dhcp_type != NULL) { hidden_item = proto_tree_add_boolean(bp_tree, hf_bootp_dhcp, tvb, 0, 0, 1); PROTO_ITEM_SET_HIDDEN(hidden_item); } if (tvb_bytes_exist(tvb, voff, 4) && (tvb_get_ntohl(tvb, voff) == 0x63825363)) { ip_addr = tvb_get_ipv4(tvb, voff); proto_tree_add_ipv4_format_value(bp_tree, hf_bootp_cookie, tvb, voff, 4, ip_addr, "(OK)"); voff += 4; } else { proto_tree_add_text(bp_tree, tvb, voff, 64, "Bootp vendor specific options"); voff += 64; } at_end = FALSE; while (voff < eoff && !at_end) { offset_delta = bootp_option(tvb, bp_tree, voff, eoff, FALSE, &at_end, &dhcp_type, &vendor_class_id, &overload); if (offset_delta <= 0) { THROW(ReportedBoundsError); } voff += offset_delta; } if (voff < eoff) { /* * Padding after the end option. */ proto_tree_add_text(bp_tree, tvb, voff, eoff - voff, "Padding"); } } static void bootp_init_protocol(void) { gchar **optionstrings = NULL; gchar **optiondetail = NULL; gchar *type = NULL; guint i, ii; /* first copy default_bootp_opt[] to bootp_opt[]. This resets all values to default */ for(i=0; i=BOOTP_OPT_NUM-1) continue; /* not a number or out of range. Go again */ if (bootp_opt[ii].ftype == special) continue; /* don't mess with specials. Go again */ bootp_opt[ii].text = optiondetail[1]; type = optiondetail[2]; /* A string to be converted to an ftype enum */ /* XXX This if statement could be extended to allow for additinonal types */ if (g_ascii_strcasecmp(type,"string") == 0) { bootp_opt[ii].ftype = string; } else if (g_ascii_strcasecmp(type,"ipv4") == 0) { bootp_opt[ii].ftype = ipv4; } else if (g_ascii_strcasecmp(type,"bytes") == 0) { bootp_opt[ii].ftype = bytes; } else { bootp_opt[ii].ftype = opaque; } } } void proto_register_bootp(void) { static hf_register_info hf[] = { { &hf_bootp_dhcp, { "Frame is DHCP", "bootp.dhcp", FT_BOOLEAN, 0, NULL, 0x0, "", HFILL }}, { &hf_bootp_type, { "Message type", "bootp.type", FT_UINT8, BASE_DEC, VALS(op_vals), 0x0, "", HFILL }}, { &hf_bootp_hw_type, { "Hardware type", "bootp.hw.type", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }}, { &hf_bootp_hw_len, { "Hardware address length", "bootp.hw.len", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_bootp_hops, { "Hops", "bootp.hops", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_bootp_id, { "Transaction ID", "bootp.id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }}, { &hf_bootp_secs, { "Seconds elapsed", "bootp.secs", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_bootp_flags, { "Bootp flags", "bootp.flags", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }}, { &hf_bootp_flags_broadcast, { "Broadcast flag", "bootp.flags.bc", FT_BOOLEAN, 16, TFS(&flag_set_broadcast), BOOTP_BC, "", HFILL }}, { &hf_bootp_flags_reserved, { "Reserved flags", "bootp.flags.reserved", FT_UINT16, BASE_HEX, NULL, BOOTP_MBZ, "", HFILL }}, { &hf_bootp_ip_client, { "Client IP address", "bootp.ip.client",FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_ip_your, { "Your (client) IP address", "bootp.ip.your", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_ip_server, { "Next server IP address", "bootp.ip.server",FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_ip_relay, { "Relay agent IP address", "bootp.ip.relay", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_hw_addr, { "Client hardware address", "bootp.hw.addr", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_hw_addr_padding, { "Client hardware address padding", "bootp.hw.addr_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_hw_ether_addr, { "Client MAC address", "bootp.hw.mac_addr", FT_ETHER, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_server, { "Server host name", "bootp.server", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_file, { "Boot file name", "bootp.file", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_cookie, { "Magic cookie", "bootp.cookie", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_vendor, { "Bootp Vendor Options", "bootp.vendor", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_fqdn_s, { "Server", "bootp.fqdn.s", FT_BOOLEAN, 8, TFS(&tfs_fqdn_s), F_FQDN_S, "If true, server should do DDNS update", HFILL }}, { &hf_bootp_fqdn_o, { "Server overrides", "bootp.fqdn.o", FT_BOOLEAN, 8, TFS(&tfs_fqdn_o), F_FQDN_O, "If true, server insists on doing DDNS update", HFILL }}, { &hf_bootp_fqdn_e, { "Encoding", "bootp.fqdn.e", FT_BOOLEAN, 8, TFS(&tfs_fqdn_e), F_FQDN_E, "If true, name is binary encoded", HFILL }}, { &hf_bootp_fqdn_n, { "Server DDNS", "bootp.fqdn.n", FT_BOOLEAN, 8, TFS(&tfs_fqdn_n), F_FQDN_N, "If true, server should not do any DDNS updates", HFILL }}, { &hf_bootp_fqdn_mbz, { "Reserved flags", "bootp.fqdn.mbz", FT_UINT8, BASE_HEX, NULL, F_FQDN_MBZ, "", HFILL }}, { &hf_bootp_fqdn_rcode1, { "A-RR result", "bootp.fqdn.rcode1", FT_UINT8, BASE_DEC, NULL, 0x0, "Result code of A-RR update", HFILL }}, { &hf_bootp_fqdn_rcode2, { "PTR-RR result", "bootp.fqdn.rcode2", FT_UINT8, BASE_DEC, NULL, 0x0, "Result code of PTR-RR update", HFILL }}, { &hf_bootp_fqdn_name, { "Client name", "bootp.fqdn.name", FT_STRING, BASE_NONE, NULL, 0x0, "Name to register via DDNS", HFILL }}, { &hf_bootp_fqdn_asciiname, { "Client name", "bootp.fqdn.name", FT_STRING, BASE_NONE, NULL, 0x0, "Name to register via DDNS", HFILL }}, { &hf_bootp_pkt_mtacap_len, { "MTA DC Length", "bootp.vendor.pktc.mtacap_len", FT_UINT8, BASE_DEC, NULL, 0x0, "PacketCable MTA Device Capabilities Length", HFILL }}, { &hf_bootp_docsis_cmcap_len, { "CM DC Length", "bootp.vendor.docsis.cmcap_len", FT_UINT8, BASE_DEC, NULL, 0x0, "DOCSIS Cable Modem Device Capabilities Length", HFILL }}, { &hf_bootp_alu_vid, { "Voice VLAN ID", "bootp.vendor.alu.vid", FT_UINT16, BASE_DEC, NULL, 0x0, "Alcatel-Lucent VLAN ID to define Voice VLAN", HFILL }}, { &hf_bootp_alu_tftp1, { "Spatial Redundancy TFTP1", "bootp.vendor.alu.tftp1" ,FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_alu_tftp2, { "Spatial Redundancy TFTP2", "bootp.vendor.alu.tftp2" ,FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_bootp_client_identifier_uuid, { "Client Identifier (UUID)", "bootp.client_id_uuid", FT_GUID, BASE_NONE, NULL, 0x0, "Client Machine Identifier (UUID)", HFILL }}, { &hf_bootp_client_network_id_major_ver, { "Client Network ID Major Version", "bootp.client_network_id_major", FT_UINT8, BASE_DEC, NULL, 0x0, "Client Machine Identifier, Major Version", HFILL }}, { &hf_bootp_client_network_id_minor_ver, { "Client Network ID Minor Version", "bootp.client_network_id_minor", FT_UINT8, BASE_DEC, NULL, 0x0, "Client Machine Identifier, Major Version", HFILL }}, { &hf_bootp_option_type, { "Option", "bootp.option.type", FT_UINT8, BASE_DEC, NULL, 0x0, "Bootp/Dhcp option type", HFILL }}, { &hf_bootp_option_length, { "Length", "bootp.option.length", FT_UINT8, BASE_DEC, NULL, 0x0, "Bootp/Dhcp option length", HFILL }}, { &hf_bootp_option_value, { "Value", "bootp.option.value", FT_BYTES, BASE_NONE, NULL, 0x0, "Bootp/Dhcp option value", HFILL }}, }; static gint *ett[] = { &ett_bootp, &ett_bootp_flags, &ett_bootp_option, &ett_bootp_fqdn, }; module_t *bootp_module; proto_bootp = proto_register_protocol("Bootstrap Protocol", "BOOTP/DHCP", "bootp"); proto_register_field_array(proto_bootp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); bootp_dhcp_tap = register_tap("bootp"); /* register init routine to setup the custom bootp options */ register_init_routine(&bootp_init_protocol); /* Allow dissector to find be found by name. */ register_dissector("bootp", dissect_bootp, proto_bootp); bootp_module = prefs_register_protocol(proto_bootp, NULL); prefs_register_bool_preference(bootp_module, "novellserverstring", "Decode Option 85 as String", "Novell Servers option 85 can be configured as a string instead of address", &novell_string); prefs_register_enum_preference(bootp_module, "pkt.ccc.protocol_version", "PacketCable CCC protocol version", "The PacketCable CCC protocol version", &pkt_ccc_protocol_version, pkt_ccc_protocol_versions, FALSE); prefs_register_uint_preference(bootp_module, "pkt.ccc.option", "PacketCable CCC option", "Option Number for PacketCable CableLabs Client Configuration", 10, &pkt_ccc_option); prefs_register_string_preference(bootp_module, "displayasstring", "Custom BootP/DHCP Options (Excl. suboptions)", "Format: OptionNumber,OptionName,OptionType[;Format].\n" "Example: 176,MyOption,string;242,NewOption,ipv4.\n" "OptionNumbers: 1-254, but no special options. " "OptionType: string, ipv4 and bytes", &pref_optionstring ); } void proto_reg_handoff_bootp(void) { dissector_handle_t bootp_handle; bootp_handle = create_dissector_handle(dissect_bootp, proto_bootp); dissector_add("udp.port", UDP_PORT_BOOTPS, bootp_handle); dissector_add("udp.port", UDP_PORT_BOOTPC, bootp_handle); }