diff options
Diffstat (limited to 'plugins/opsi/packet-opsi.c')
| -rw-r--r-- | plugins/opsi/packet-opsi.c | 792 |
1 files changed, 0 insertions, 792 deletions
diff --git a/plugins/opsi/packet-opsi.c b/plugins/opsi/packet-opsi.c deleted file mode 100644 index 1876d33767..0000000000 --- a/plugins/opsi/packet-opsi.c +++ /dev/null @@ -1,792 +0,0 @@ -/* packet-opsi.c - * Routines for OPSI protocol dissection - * Copyright 2004, Laurent Rabret (France Telecom R&D) <laurent.rabret@i.hate.spams.org> - * - * $Id$ - * - * Wireshark - Network traffic analyzer - * By Gerald Combs <gerald@wireshark.org> - * Copyright 1998 Gerald Combs - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <glib.h> - -#include <epan/packet.h> -#include <epan/dissectors/packet-tcp.h> -#include <epan/prefs.h> - -#include "packet-opsi.h" - -/* Initialize the protocol and registered fields */ -static int proto_opsi = -1; -static int hf_opsi_major_version = -1; -static int hf_opsi_minor_version = -1; -static int hf_opsi_opcode = -1; -static int hf_opsi_hook_id = -1; -static int hf_opsi_length = -1; -static int hf_opsi_session_id = -1; -static int hf_user_name_att = -1; -static int hf_password_att = -1; -static int hf_chap_password_att = -1; -static int hf_nas_ip_add_att = -1; -static int hf_nas_port_att = -1; -static int hf_service_type_att = -1; -static int hf_framed_protocol_att = -1; -static int hf_framed_address_att = -1; -static int hf_framed_netmask_att = -1; -static int hf_framed_routing_att = -1; -static int hf_framed_filter_att = -1; -static int hf_framed_mtu_att = -1; -static int hf_framed_compression_att = -1; -static int hf_called_station_att = -1; -static int hf_calling_station_att = -1; -static int hf_nas_identifier_att = -1; -static int hf_accounting_att = -1; -static int hf_acct_session_id_att = -1; -static int hf_chap_challenge_att = -1; -static int hf_nas_port_type_att = -1; -static int hf_designation_num_att = -1; -static int hf_nas_port_id_att = -1; -static int hf_smc_aaa_id_att = -1; -static int hf_smc_vpn_id_att = -1; -static int hf_smc_vpn_name_att = -1; -static int hf_smc_ran_id_att = -1; -static int hf_smc_ran_ip_att = -1; -static int hf_smc_ran_name_att = -1; -static int hf_smc_pop_id_att = -1; -static int hf_smc_pop_name_att = -1; -static int hf_smc_id_att = -1; -static int hf_smc_receive_time_att = -1; -static int hf_smc_stat_time_att = -1; -static int hf_opsi_flags_att = -1; -static int hf_opsi_application_name_att = -1; - -/* Initialize the subtree pointers */ -static gint ett_opsi = -1; -static gint ett_opsi_user_name = -1; -static gint ett_opsi_user_password = -1; -static gint ett_opsi_chap_password = -1; -static gint ett_opsi_nas_ip_address = -1; -static gint ett_opsi_nas_port = -1; -static gint ett_opsi_service_type = -1; -static gint ett_opsi_framed_protocol = -1; -static gint ett_opsi_framed_address = -1; -static gint ett_opsi_framed_netmask = -1; -static gint ett_opsi_framed_routing = -1; -static gint ett_opsi_framed_filter = -1; -static gint ett_opsi_framed_mtu = -1; -static gint ett_opsi_framed_compression = -1; -static gint ett_opsi_called_station_id = -1; -static gint ett_opsi_calling_station_id = -1; -static gint ett_opsi_nas_identifier = -1; -static gint ett_opsi_accounting = -1; -static gint ett_opsi_acct_session_id = -1; -static gint ett_opsi_chap_challenge = -1; -static gint ett_opsi_nas_port_type = -1; -static gint ett_opsi_designation_number = -1; -static gint ett_opsi_nas_port_id = -1; -static gint ett_opsi_smc_aaa_id = -1; -static gint ett_opsi_smc_vpn_id = -1; -static gint ett_opsi_smc_vpn_name = -1; -static gint ett_opsi_smc_ran_id = -1; -static gint ett_opsi_smc_ran_ip = -1; -static gint ett_opsi_smc_ran_name = -1; -static gint ett_opsi_smc_pop_id = -1; -static gint ett_opsi_smc_pop_name = -1; -static gint ett_opsi_smc_id = -1; -static gint ett_opsi_smc_receive_time = -1; -static gint ett_opsi_smc_stat_time = -1; -static gint ett_opsi_flags = -1; -static gint ett_opsi_application_name = -1; - - -/* Code mapping */ -static const value_string opsi_opcode[] = { - { DISCOVER_REQUEST, "Discover Request" }, - { DISCOVER_RESPONSE, "Discover Response" }, - { SERVICE_REQUEST, "Service Request" }, - { SERVICE_ACCEPT, "Service Accept" }, - { SERVICE_REJECT, "Service Reject" }, - { TERMINATE_REQUEST, "Terminate Request" }, - { 0, NULL } - }; - -static const value_string opsi_service_type_code[] = { - { 1, "Login" }, - { 2, "Framed" }, - { 3, "Callback Login" }, - { 4, "Callback Framed" }, - { 5, "Outbound" }, - { 6, "Administrative" }, - { 7, "NAS Prompt" }, - { 8, "Authenticate Only" }, - { 9, "Callback NAS Prompt" }, - { 0, NULL } - }; - -static const value_string opsi_framed_protocol_code[] = { - { 1, "PPP" }, - { 2, "SLIP" }, - { 3, "AppleTalk Remote Access Protocol (ARAP)" }, - { 4, "Gandalf proprietary SingleLink/MultiLink protocol" }, - { 5, "Xylogics proprietary IPX/SLIP" }, - { 255, "Ascend ARA" }, - { 256, "MPP" }, - { 257, "EURAW" }, - { 258, "EUUI" }, - { 259, "X25" }, - { 260, "COMB" }, - { 261, "FR" }, - { 262, "MP" }, - { 263, "FR-CIR"}, - { 0, NULL } - }; - -static const value_string opsi_framed_routing_code[] = { - { 0, "None" }, - { 1, "Broadcast" }, - { 2, "Listen" }, - { 3, "Broadcast-Listen" }, - { 4, "Broadcast V2" }, - { 5, "Listen V2" }, - { 6, "Broadcast-Listen V2" }, - { 0, NULL }, - }; - -static const value_string opsi_framed_compression_code[] = { - { 0, "None" }, - { 1, "Van Jacobsen TCP/IP" }, - { 2, "IPX header compression" }, - { 0, NULL } - }; - -static const value_string opsi_nas_port_type_code[] = { - { 0, "Async" }, - { 1, "Sync" }, - { 2, "ISDN Sync" }, - { 3, "ISDN Async V.120" }, - { 4, "ISDN Async V.110" }, - { 5, "Virtual" }, - { 6, "PIAFS" }, - { 7, "HDLC Clear Channel" }, - { 8, "X.25" }, - { 9, "X.75" }, - { 10, "G.3 Fax" }, - { 11, "SDSL - Symmetric DSL" }, - { 12, "ADSL-CAP - Asymmetric DSL, Carrierless Amplitude Phase Modulation" }, - { 13, "ADSL-DMT - Asymmetric DSL, Discrete Multi-Tone" }, - { 14, "IDSL - ISDN Digital Subscriber Line" }, - { 15, "Ethernet" }, - { 16, "xDSL - Digital Subscriber Line of unknown type" }, - { 17, "Cable" }, - { 18, "Wireless - Other" }, - { 19, "Wireless - IEEE 802.11" }, - { 201,"Voice over IP" }, - { 0, NULL } - }; - - -/* Structure used to decode OPSI frame attributes */ -/* CAUTION : it is compulsory to sort this array */ -/* (first argument of the opsi_attribute_handle_t) */ -/* in ascending order */ -/* */ -static opsi_attribute_handle_t opsi_attributes[] = { - { USER_NAME_ATTRIBUTE, /* 1 */ - "User name attribute", &ett_opsi_user_name, &hf_user_name_att, decode_string_attribute }, - { USER_PASSWD_ATTRIBUTE, /* 2 */ - "User password attribute" , &ett_opsi_user_password, &hf_password_att, decode_string_attribute }, - { CHAP_PASSWD_ATTRIBUTE, /* 3 */ - "CHAP password attribute", &ett_opsi_chap_password, &hf_chap_password_att, decode_string_attribute }, - { NAS_IP_ADDRESS_ATTRIBUTE, /* 4 */ - "NAS IP address attribute", &ett_opsi_nas_ip_address, &hf_nas_ip_add_att, decode_ipv4_attribute }, - {NAS_PORT_ATTRIBUTE, /* 5 */ - "NAS port attribute", &ett_opsi_nas_port, &hf_nas_port_att, decode_longint_attribute }, - {SERVICE_TYPE_ATTRIBUTE, /* 6 */ - "Service type attribute", &ett_opsi_service_type, &hf_service_type_att, decode_value_string_attribute }, - {FRAMED_PROTOCOL_ATTRIBUTE, /* 7 */ - "Framed protocol attribute", &ett_opsi_framed_protocol, &hf_framed_protocol_att, decode_value_string_attribute }, - {FRAMED_ADDRESS_ATTRIBUTE, /* 8 */ - "Framed address attribute", &ett_opsi_framed_address, &hf_framed_address_att, decode_ipv4_attribute }, - {FRAMED_NETMASK_ATTRIBUTE, /* 9 */ - "Framed netmask attribute", &ett_opsi_framed_netmask, &hf_framed_netmask_att, decode_ipv4_attribute }, - {FRAMED_ROUTING_ATTRIBUTE, /* 10 */ - "Framed routing attribute", &ett_opsi_framed_routing, &hf_framed_routing_att, decode_value_string_attribute }, - {FRAMED_FILTER_ATTRIBUTE, /* 11 */ - "Framed filter attribute", &ett_opsi_framed_filter, &hf_framed_filter_att, decode_string_attribute }, - {FRAMED_MTU_ATTRIBUTE, /* 12 */ - "Framed MTU attribute", &ett_opsi_framed_mtu, &hf_framed_mtu_att, decode_longint_attribute }, - {FRAMED_COMPRESSION_ATTRIBUTE, /* 13 */ - "Framed compression attribute", &ett_opsi_framed_compression, &hf_framed_compression_att, decode_value_string_attribute }, - {CALLED_STATION_ID_ATTRIBUTE, /* 30 */ - "Called station ID attribute", &ett_opsi_called_station_id, &hf_called_station_att, decode_string_attribute }, - {CALLING_STATION_ID_ATTRIBUTE, /* 31 */ - "Calling station ID attribute", &ett_opsi_calling_station_id, &hf_calling_station_att, decode_string_attribute }, - {NAS_IDENTIFIER, /* 32 */ - "NAS Identifier attribute", &ett_opsi_nas_identifier, &hf_nas_identifier_att, decode_string_attribute }, - {ACCOUNTING_40_ATTRIBUTE, /* 40 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_41_ATTRIBUTE, /* 41 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_42_ATTRIBUTE, /* 42 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_43_ATTRIBUTE, /* 43 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_SESSION_ID_ATTRIBUTE, /* 44 */ - "Accounting session ID attribute", &ett_opsi_acct_session_id, &hf_acct_session_id_att, decode_string_attribute }, - {ACCOUNTING_45_ATTRIBUTE, /* 45 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_46_ATTRIBUTE, /* 46 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_47_ATTRIBUTE, /* 47 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_48_ATTRIBUTE, /* 48 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_49_ATTRIBUTE, /* 49 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_50_ATTRIBUTE, /* 50 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_51_ATTRIBUTE, /* 51 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_52_ATTRIBUTE, /* 52 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_53_ATTRIBUTE, /* 53 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_54_ATTRIBUTE, /* 54 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_55_ATTRIBUTE, /* 55 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_56_ATTRIBUTE, /* 56 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_57_ATTRIBUTE, /* 57 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_58_ATTRIBUTE, /* 58 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {ACCOUNTING_59_ATTRIBUTE, /* 59 */ - "Accounting attribute", &ett_opsi_accounting, &hf_accounting_att, decode_string_attribute }, - {CHAP_CHALLENGE_ATTRIBUTE, /* 60 */ - "CHAP challenge", &ett_opsi_chap_challenge, &hf_chap_challenge_att, decode_string_attribute }, - {NAS_PORT_TYPE_ATTRIBUTE, /* 61 */ - "NAS port type attribute", &ett_opsi_nas_port_type, &hf_nas_port_type_att, decode_value_string_attribute }, - {DESIGNATION_NUMBER_ATTRIBUTE, /* 77 */ - "Designation number attribute", &ett_opsi_designation_number, &hf_designation_num_att, decode_string_attribute }, - {NAS_PORT_ID_ATTRIBUTE, /* 87 */ - "NAS port ID attribute", &ett_opsi_nas_port_id, &hf_nas_port_id_att, decode_string_attribute }, - {SMC_AAAID_ATTRIBUTE, /* 651 */ - "SMC AAA ID attribute", &ett_opsi_smc_aaa_id, &hf_smc_aaa_id_att, decode_longint_attribute }, - {SMC_VPNID_ATTRIBUTE, /* 652 */ - "SMC VPN ID attribute", &ett_opsi_smc_vpn_id, &hf_smc_vpn_id_att, decode_longint_attribute }, - {SMC_VPNNAME_ATTRIBUTE, /* 653 */ - "SMC VPN name attribute", &ett_opsi_smc_vpn_name, &hf_smc_vpn_name_att, decode_string_attribute }, - {SMC_RANID_ATTRIBUTE, /* 654 */ - "SMC RAN ID attribute", &ett_opsi_smc_ran_id, &hf_smc_ran_id_att, decode_longint_attribute }, - {SMC_RANIP_ATTRIBUTE, /* 655 */ - "SMC RAN IP attribute", &ett_opsi_smc_ran_ip, &hf_smc_ran_ip_att, decode_ipv4_attribute }, - {SMC_RANNAME_ATTRIBUTE, /* 656 */ - "SMC RAN name attribute", &ett_opsi_smc_ran_name, &hf_smc_ran_name_att, decode_string_attribute }, - {SMC_POPID_ATTRIBUTE, /* 657 */ - "SMC POP ID attribute", &ett_opsi_smc_pop_id, &hf_smc_pop_id_att, decode_longint_attribute }, - {SMC_POPNAME_ATTRIBUTE, /* 658 */ - "SMC POP name attribute", &ett_opsi_smc_pop_name, &hf_smc_pop_name_att, decode_string_attribute }, - {SMC_SMCID_ATTRIBUTE, /* 659 */ - "SMC ID attribute", &ett_opsi_smc_id, &hf_smc_id_att, decode_longint_attribute }, - {SMC_RECEIVE_TIME_ATTRIBUTE, /* 660 */ - "SMC receive time attribute", &ett_opsi_smc_receive_time, &hf_smc_receive_time_att, decode_time_attribute }, - {SMC_STAT_TIME_ATTRIBUTE, /* 661 */ - "SMC stat time attribute", &ett_opsi_smc_stat_time, &hf_smc_stat_time_att, decode_longint_attribute }, - {OPSI_FLAGS_ATTRIBUTE, /* 674 */ - "OPSI flags attribute", &ett_opsi_flags, &hf_opsi_flags_att, decode_longint_attribute }, - {OPSI_APPLICATION_NAME_ATTRIBUTE,/* 675 */ - "OPSI application name attribute", &ett_opsi_application_name, &hf_opsi_application_name_att, decode_string_attribute }, - -}; -#define OPSI_ATTRIBUTES_COUNT (sizeof(opsi_attributes)/sizeof(opsi_attribute_handle_t)) - -/* Desegmentation of OPSI (over TCP) */ -static gboolean opsi_desegment = TRUE; -/* To check if we must create or update the information column */ -static gboolean opsi_first; - -void decode_string_attribute(tvbuff_t *tvb, proto_tree *tree, int* hfValue, int offset, int length) -{ - guint8* pbuffer; - if (length < 4) { - proto_tree_add_text(tree, tvb, offset, length, "Too short attribute!"); - return; - } - - pbuffer=tvb_get_string(tvb, offset+4, length-4); - proto_tree_add_string(tree, *hfValue, tvb, offset+4, length-4, pbuffer); - g_free(pbuffer); -} - - -void decode_ipv4_attribute(tvbuff_t *tvb, proto_tree *tree, int* hfValue, int offset, int length) -{ - guint32 ip_address; - if (length < 8) { - proto_tree_add_text(tree, tvb, offset, length, "Too short attribute!"); - return; - } - ip_address = tvb_get_ipv4(tvb, offset+4); - proto_tree_add_ipv4(tree, *hfValue, tvb, offset+4, 4, ip_address); -} - -void decode_longint_attribute(tvbuff_t *tvb, proto_tree *tree, int* hfValue, int offset, int length) -{ - if (length < 8) { - proto_tree_add_text(tree, tvb, offset, length, "Too short attribute!"); - return; - } - proto_tree_add_uint(tree, *hfValue, tvb, offset+4, 4, tvb_get_ntohl(tvb, offset+4)); -} - -void decode_value_string_attribute(tvbuff_t *tvb, proto_tree *tree, int* hfValue, int offset, int length) -{ - if (length < 8) { - proto_tree_add_text(tree, tvb, offset, length, "Too short attribute!"); - return; - } - proto_tree_add_item(tree, *hfValue, tvb, offset+4, 4, FALSE); -} - -void decode_time_attribute(tvbuff_t *tvb, proto_tree *tree, int* hfValue, int offset, int length) -{ - nstime_t ns; - - if (length < 8) { - proto_tree_add_text(tree, tvb, offset, length, "Too short attribute!"); - return; - } - ns.secs = tvb_get_ntohl(tvb, offset+4); - ns.nsecs = 0; - proto_tree_add_time(tree, *hfValue, tvb, offset+4, 4, &ns); -} - -/****************************************************************************/ -/********** End of attribute decoding ***************************************/ -/****************************************************************************/ - -/* To find the correct size of the PDU. Needed by the desegmentation feature*/ -static guint get_opsi_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset) -{ - /* - * Get the length of the OPSI packet. - * We are guaranteed there're enough chars in tvb in order to - * extract the length value. No exception thrown !! - */ - return tvb_get_ntohs(tvb, offset + 4); -} - -static int get_opsi_attribute_index(int min, int max, int attribute_type) -{ - int middle, at; - - middle = (min+max)/2; - at = opsi_attributes[middle].attribute_type; - if (at == attribute_type) return middle; - if (attribute_type > at) { - return (middle == max) ? -1 : get_opsi_attribute_index(middle+1, max, attribute_type); - } - return (middle == min) ? -1 : get_opsi_attribute_index(min, middle-1, attribute_type); -} - - -static void -dissect_attributes(tvbuff_t *tvb, proto_tree *opsi_tree, int offset, int length) -{ - int i; - int attribute_type; - int attribute_length; - proto_item *ti; - proto_tree *ntree = NULL; - - while (length >= 4) { - attribute_type = tvb_get_ntohs(tvb, offset); - attribute_length = tvb_get_ntohs(tvb, offset+2); - if (attribute_length > length) break; - /* We perform a standard log(n) lookup */ - i = get_opsi_attribute_index(0, OPSI_ATTRIBUTES_COUNT-1, attribute_type); - if (i == -1) { - proto_tree_add_text(opsi_tree, tvb, offset, attribute_length, "Unknown attribute (%d)", attribute_type); - } - else { - ti = proto_tree_add_text(opsi_tree, tvb, offset, attribute_length, "%s (%d)", opsi_attributes[i].tree_text, attribute_type); - ntree = proto_item_add_subtree(ti, *opsi_attributes[i].tree_id); - proto_tree_add_text(ntree, tvb, offset+2, 2, "Length (%d)", attribute_length); - opsi_attributes[i].dissect(tvb, ntree, opsi_attributes[i].hf_type_attribute, offset, attribute_length); - } - if (attribute_length < 4) { - /* Length must be at least 4, for the type and length. */ - break; - } - offset += attribute_length; - length -= attribute_length; - } - if (length) { - proto_tree_add_text(opsi_tree, tvb, offset, -1, "Short frame"); - } -} - -static void -dissect_opsi_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) -{ - proto_item *ti; - proto_tree *opsi_tree; - - if (opsi_first == TRUE) { - opsi_first = FALSE; - - if (check_col(pinfo->cinfo, COL_PROTOCOL)) - col_set_str(pinfo->cinfo, COL_PROTOCOL, "OPSI"); - - if (check_col(pinfo->cinfo, COL_INFO)) { - col_clear(pinfo->cinfo, COL_INFO); - if (tvb_length(tvb) < CODE_OFFSET+1) { - col_set_str(pinfo->cinfo, COL_INFO, "Open Policy Service Interface"); - } - else { - col_add_fstr(pinfo->cinfo, COL_INFO, "Open Policy Service Interface, %s", - val_to_str(tvb_get_guint8(tvb, CODE_OFFSET), opsi_opcode, - "<Unknown opcode %d>")); - } - } - } - else if (check_col(pinfo->cinfo, COL_INFO) && (tvb_length(tvb) > CODE_OFFSET)) { - col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", - val_to_str(tvb_get_guint8(tvb, CODE_OFFSET), opsi_opcode, - "<Unknown opcode %d>")); - } - - if (tree) { - ti = proto_tree_add_item(tree, proto_opsi, tvb, 0, -1, FALSE); - opsi_tree = proto_item_add_subtree(ti, ett_opsi); - if (tvb_length(tvb) < 8 ) { - proto_tree_add_text(opsi_tree, tvb, 0, -1, "Too short OPSI packet!"); - return; - } - - proto_tree_add_item(opsi_tree, hf_opsi_major_version, tvb, MAJOR_VERSION_OFFSET, 1, FALSE); - proto_tree_add_item(opsi_tree, hf_opsi_minor_version, tvb, MINOR_VERSION_OFFSET, 1, FALSE); - proto_tree_add_item(opsi_tree, hf_opsi_opcode, tvb, CODE_OFFSET, 1, FALSE); - proto_tree_add_item(opsi_tree, hf_opsi_hook_id, tvb, HOOK_ID_OFFSET, 1, FALSE); - proto_tree_add_item(opsi_tree, hf_opsi_length, tvb, PACKET_LENGTH_OFFSET, 2, FALSE); - proto_tree_add_item(opsi_tree, hf_opsi_session_id, tvb, SESSION_OFFSET, 2, FALSE); - - dissect_attributes(tvb, opsi_tree, HEADER_LENGTH, MIN(((int)tvb_length(tvb)-HEADER_LENGTH), (tvb_get_ntohs(tvb, PACKET_LENGTH_OFFSET)-HEADER_LENGTH))); - } -} - - -static void -dissect_opsi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) -{ - opsi_first = TRUE; - /* we need at least 6 bytes to get the payload size ! */ - tcp_dissect_pdus(tvb, pinfo, tree, opsi_desegment, 6, get_opsi_pdu_len, - dissect_opsi_pdu); -} - - -void -proto_register_opsi(void) -{ - -/* Setup list of header fields See Section 1.6.1 for details*/ - static hf_register_info hf[] = { - { &hf_opsi_major_version, - { "Major version", "opsi.major", - FT_UINT8, BASE_DEC, NULL, 0x0, - "", HFILL } - }, - { &hf_opsi_minor_version, - { "Minor version", "opsi.minor", - FT_UINT8, BASE_DEC, NULL, 0x0, - "", HFILL } - }, - { &hf_opsi_opcode, - { "Operation code", "opsi.opcode", - FT_UINT8, BASE_DEC, VALS(opsi_opcode), 0x0, - "", HFILL } - }, - { &hf_opsi_hook_id, - { "Hook ID", "opsi.hook", - FT_UINT8, BASE_DEC, NULL, 0x0, - "", HFILL } - }, - { &hf_opsi_length, - { "Message length", "opsi.length", - FT_UINT16, BASE_DEC, NULL, 0x0, - "", HFILL } - }, - { &hf_opsi_session_id, - { "Session ID", "opsi.session_id", - FT_UINT16, BASE_DEC, NULL, 0x0, - "", HFILL } - }, - { &hf_user_name_att, - { "User name", "opsi.attr.user_name", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_password_att, - { "User password", "opsi.attr.password", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_chap_password_att, - { "CHAP password attribute", "opsi.attr.chap_password", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_nas_ip_add_att, - { "NAS IP address", "opsi.attr.nas_ip_addr", - FT_IPv4, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_nas_port_att, - { "NAS port", "opsi.attr.nas_port", - FT_UINT32, BASE_HEX, NULL, 0x00, - "", HFILL } - }, - { &hf_service_type_att, - { "Service type", "opsi.attr.service_type", - FT_UINT32, BASE_DEC, VALS(opsi_service_type_code), 0x0, - "", HFILL } - }, - { &hf_framed_protocol_att, - { "Framed protocol", "opsi.attr.framed_protocol", - FT_UINT32, BASE_DEC, VALS(opsi_framed_protocol_code), 0x0, - "", HFILL } - }, - { &hf_framed_address_att, - { "Framed address", "opsi.attr.framed_address", - FT_IPv4, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_framed_netmask_att, - { "Framed netmask", "opsi.attr.framed_netmask", - FT_IPv4, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_framed_routing_att, - { "Framed routing", "opsi.attr.framed_routing", - FT_UINT32, BASE_DEC, VALS(opsi_framed_routing_code), 0x0, - "", HFILL } - }, - { &hf_framed_filter_att, - { "Framed filter", "opsi.attr.framed_filter", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_framed_mtu_att, - { "Framed MTU", "opsi.attr.framed_mtu", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_framed_compression_att, - { "Framed compression", "opsi.attr.framed_compression", - FT_UINT32, BASE_DEC, VALS(opsi_framed_compression_code), 0x0, - "", HFILL } - }, - { &hf_called_station_att, - { "Called station ID", "opsi.attr.called_station_id", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_calling_station_att, - { "Calling station ID", "opsi.attr.calling_station_id", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_nas_identifier_att, - { "NAS ID", "opsi.attr.nas_id", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_accounting_att, - { "Accounting", "opsi.attr.accounting", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_acct_session_id_att, - { "Accounting session ID", "opsi.attr.acct.session_id", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_chap_challenge_att, - { "CHAP challenge", "opsi.attr.chap_challenge", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_nas_port_type_att, - { "NAS port type", "opsi.attr.nas_port_type", - FT_UINT32, BASE_DEC, VALS(opsi_nas_port_type_code), 0x0, - "", HFILL } - }, - { &hf_designation_num_att, - { "Designation number", "opsi.attr.designation_number", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_nas_port_id_att, - { "NAS port ID", "opsi.attr.nas_port_id", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_aaa_id_att, - { "SMC AAA ID", "opsi.attr.smc_aaa_id", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_vpn_id_att, - { "SMC VPN ID", "opsi.attr.smc_vpn_id", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_vpn_name_att, - { "SMC VPN name", "opsi.attr.smc_vpn_name", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_ran_id_att, - { "SMC RAN ID", "opsi.attr.smc_ran_id", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_ran_ip_att, - { "SMC RAN IP address", "opsi.attr.smc_ran_ip", - FT_IPv4, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_ran_name_att, - { "SMC RAN name", "opsi.attr.smc_ran_name", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_pop_id_att, - { "SMC POP id", "opsi.attr.smc_pop_id", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_pop_name_att, - { "SMC POP name", "opsi.attr.smc_pop_name", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_id_att, - { "SMC ID", "opsi.attr.smc_id", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_receive_time_att, - { "SMC receive time", "opsi.attr.smc_receive_time", - FT_ABSOLUTE_TIME, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - { &hf_smc_stat_time_att, - { "SMC stat time", "opsi.attr.smc_stat_time", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_opsi_flags_att, - { "OPSI flags", "opsi.attr.flags", - FT_UINT32, BASE_DEC, NULL, 0x00, - "", HFILL } - }, - { &hf_opsi_application_name_att, - { "OPSI application name", "opsi.attr.application_name", - FT_STRING, BASE_NONE, NULL, 0x00, - "", HFILL } - }, - }; - -/* Setup protocol subtree array */ - static gint *ett[] = { - &ett_opsi, - &ett_opsi_user_name, - &ett_opsi_user_password, - &ett_opsi_chap_password, - &ett_opsi_nas_ip_address, - &ett_opsi_nas_port, - &ett_opsi_service_type, - &ett_opsi_framed_protocol, - &ett_opsi_framed_address, - &ett_opsi_framed_netmask, - &ett_opsi_framed_routing, - &ett_opsi_framed_filter, - &ett_opsi_framed_mtu, - &ett_opsi_framed_compression, - &ett_opsi_called_station_id, - &ett_opsi_calling_station_id, - &ett_opsi_nas_identifier, - &ett_opsi_accounting, - &ett_opsi_acct_session_id, - &ett_opsi_chap_challenge, - &ett_opsi_nas_port_type, - &ett_opsi_designation_number, - &ett_opsi_nas_port_id, - &ett_opsi_smc_aaa_id, - &ett_opsi_smc_vpn_id, - &ett_opsi_smc_vpn_name, - &ett_opsi_smc_ran_id, - &ett_opsi_smc_ran_ip, - &ett_opsi_smc_ran_name, - &ett_opsi_smc_pop_id, - &ett_opsi_smc_pop_name, - &ett_opsi_smc_id, - &ett_opsi_smc_receive_time, - &ett_opsi_smc_stat_time, - &ett_opsi_flags, - &ett_opsi_application_name, - }; - -/* For desegmentation / reassembly */ - module_t *opsi_module; - -/* Register the protocol name and description */ - proto_opsi = proto_register_protocol("Open Policy Service Interface", - "OPSI", "opsi"); - -/* Required function calls to register the header fields and subtrees used */ - proto_register_field_array(proto_opsi, hf, array_length(hf)); - proto_register_subtree_array(ett, array_length(ett)); - -/* We activate the desegmentation / reassembly feature */ - opsi_module = prefs_register_protocol(proto_opsi, NULL); - prefs_register_bool_preference(opsi_module, "desegment_opsi_messages", - "Reassemble OPSI messages spanning multiple TCP segments", - "Whether the OPSI dissector should desegment all messages spanning multiple TCP segments", - &opsi_desegment); -} - - -void -proto_reg_handoff_opsi(void) -{ - dissector_handle_t opsi_handle; - opsi_handle = create_dissector_handle(dissect_opsi, proto_opsi); - dissector_add("tcp.port", TCP_PORT_OPSI, opsi_handle); -} |