/* packet-fcct.c * Routines for FC Common Transport Protocol (used by GS3 services) * Copyright 2001, Dinesh G Dutt * * $Id$ * * Ethereal - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #ifdef HAVE_SYS_TYPES_H # include #endif #ifdef HAVE_NETINET_IN_H # include #endif #include #ifdef NEED_SNPRINTF_H # include "snprintf.h" #endif #include #include "etypes.h" #include "packet-fc.h" #include "packet-fcct.h" /* Initialize the protocol and registered fields */ static int proto_fcct = -1; static int hf_fcct_revision = -1; static int hf_fcct_inid = -1; static int hf_fcct_gstype = -1; static int hf_fcct_gssubtype = -1; static int hf_fcct_options = -1; static int hf_fcct_server = -1; /* derived field */ /* Extended preamble fields */ static int hf_fcct_ext_said = -1; static int hf_fcct_ext_tid = -1; static int hf_fcct_ext_reqname = -1; static int hf_fcct_ext_tstamp = -1; static int hf_fcct_ext_authblk = -1; /* Initialize the subtree pointers */ static gint ett_fcct = -1; static gint ett_fcct_ext = -1; /* for the extended header */ const value_string fc_ct_rjt_code_vals [] = { {FCCT_RJT_INVCMDCODE, "Invalid Cmd Code"}, {FCCT_RJT_INVVERSION, "Invalid Version Level"}, {FCCT_RJT_LOGICALERR, "Logical Error"}, {FCCT_RJT_INVSIZE, "Invalid CT_IU Size"}, {FCCT_RJT_LOGICALBSY, "Logical Busy"}, {FCCT_RJT_PROTOERR, "Protocol Error"}, {FCCT_RJT_GENFAIL, "Unable to Perform Cmd"}, {FCCT_RJT_CMDNOTSUPP, "Cmd Not Supported"}, {0, NULL}, }; static const value_string fc_ct_gstype_vals[] = { {FCCT_GSTYPE_KEYSVC, "Key Service"}, {FCCT_GSTYPE_ALIASSVC, "Alias Service"}, {FCCT_GSTYPE_MGMTSVC, "Management Service"}, {FCCT_GSTYPE_TIMESVC, "Time Service"}, {FCCT_GSTYPE_DIRSVC, "Directory Service"}, {0, NULL}, }; static const value_string fc_ct_gsserver_vals[] = { {FCCT_GSRVR_DNS, "dNS"}, {FCCT_GSRVR_IP, "IP"}, {FCCT_GSRVR_FCS, "Fabric Config Server"}, {FCCT_GSRVR_UNS, "Unzoned Name Server"}, {FCCT_GSRVR_FZS, "Fabric Zone Server"}, {FCCT_GSRVR_TS, "Time Server"}, {FCCT_GSRVR_KS, "Key Server"}, {FCCT_GSRVR_AS, "Alias Server"}, {0, NULL}, }; static dissector_table_t fcct_gserver_table; static dissector_handle_t data_handle; static guint8 get_gs_server (guint8 gstype, guint8 gssubtype) { switch (gstype) { case FCCT_GSTYPE_KEYSVC: return FCCT_GSRVR_KS; case FCCT_GSTYPE_ALIASSVC: if (gssubtype == FCCT_GSSUBTYPE_AS) return FCCT_GSRVR_AS; return FCCT_GSRVR_UNKNOWN; case FCCT_GSTYPE_MGMTSVC: if (gssubtype == FCCT_GSSUBTYPE_FCS) return FCCT_GSRVR_FCS; else if (gssubtype == FCCT_GSSUBTYPE_UNS) return FCCT_GSRVR_UNS; else if (gssubtype == FCCT_GSSUBTYPE_FZS) return FCCT_GSRVR_FZS; else return FCCT_GSRVR_UNKNOWN; case FCCT_GSTYPE_TIMESVC: if (gssubtype == FCCT_GSSUBTYPE_TS) return FCCT_GSRVR_TS; return FCCT_GSRVR_UNKNOWN; case FCCT_GSTYPE_DIRSVC: if (gssubtype == FCCT_GSSUBTYPE_DNS) return FCCT_GSRVR_DNS; else if (gssubtype == FCCT_GSSUBTYPE_IP) return FCCT_GSRVR_IP; return FCCT_GSRVR_UNKNOWN; default: return FCCT_GSRVR_UNKNOWN; } } /* Code to actually dissect the packets */ static void dissect_fcct (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { /* Set up structures needed to add the protocol subtree and manage it */ proto_item *ti; proto_tree *fcct_tree; tvbuff_t *next_tvb; int in_id, offset = 0; guint8 server; fc_ct_preamble cthdr; /* Make entries in Protocol column and Info column on summary display */ if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "FC_CT"); /* cthdr.revision = tvb_get_guint8 (tvb, offset++); cthdr.in_id = tvb_get_ntoh24 (tvb, offset); offset += 3; cthdr.gstype = tvb_get_guint8 (tvb, offset++); cthdr.options = tvb_get_guint8 (tvb, offset++); */ tvb_memcpy (tvb, (guint8 *)&cthdr, offset, FCCT_PRMBL_SIZE); cthdr.revision = tvb_get_guint8 (tvb, offset++); cthdr.in_id = tvb_get_ntoh24 (tvb, offset); cthdr.opcode = ntohs (cthdr.opcode); cthdr.maxres_size = ntohs (cthdr.maxres_size); if (check_col (pinfo->cinfo, COL_INFO)) { if (cthdr.opcode < FCCT_MSG_REQ_MAX) { col_append_str (pinfo->cinfo, COL_INFO, " Request"); } else if (cthdr.opcode == FCCT_MSG_ACC) { col_append_str (pinfo->cinfo, COL_INFO, " Accept"); } else if (cthdr.opcode == FCCT_MSG_RJT) { col_append_fstr (pinfo->cinfo, COL_INFO, " Reject (%s)", val_to_str (cthdr.rjt_code, fc_ct_rjt_code_vals, "0x%x")); } else { col_append_str (pinfo->cinfo, COL_INFO, " Reserved"); } } in_id = cthdr.in_id; in_id = htonl (in_id) >> 8; /* Determine server */ server = get_gs_server (cthdr.gstype, cthdr.gssubtype); if (tree) { offset = 0; ti = proto_tree_add_protocol_format (tree, proto_fcct, tvb, 0, FCCT_PRMBL_SIZE, "FC_CT"); fcct_tree = proto_item_add_subtree (ti, ett_fcct); proto_tree_add_item (fcct_tree, hf_fcct_revision, tvb, offset++, sizeof (guint8), 0); proto_tree_add_string (fcct_tree, hf_fcct_inid, tvb, offset, 3, fc_to_str ((guint8 *)&in_id)); offset += 3; /* sizeof FC address */ proto_tree_add_item (fcct_tree, hf_fcct_gstype, tvb, offset++, sizeof (guint8), 0); proto_tree_add_item (fcct_tree, hf_fcct_gssubtype, tvb, offset, sizeof (guint8), 0); proto_tree_add_uint (fcct_tree, hf_fcct_server, tvb, offset++, 1, server); proto_tree_add_item (fcct_tree, hf_fcct_options, tvb, offset++, sizeof (guint8), 0); } /* We do not change the starting offset for the next protocol in the * chain since the fc_ct header is common to the sub-protocols. */ next_tvb = tvb_new_subset (tvb, 0, -1, -1); if (!dissector_try_port (fcct_gserver_table, server, next_tvb, pinfo, tree)) { call_dissector (data_handle, next_tvb, pinfo, tree); } } /* Register the protocol with Ethereal */ /* this format is require because a script is used to build the C function that calls all the protocol registration. */ void proto_register_fcct(void) { /* Setup list of header fields See Section 1.6.1 for details*/ static hf_register_info hf[] = { { &hf_fcct_revision, {"Revision", "fcct.revision", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}}, { &hf_fcct_inid, {"IN_ID", "fcct.in_id", FT_STRING, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_gstype, {"GS Type", "fcct.gstype", FT_UINT8, BASE_HEX, VALS(fc_ct_gstype_vals), 0x0, "", HFILL}}, { &hf_fcct_gssubtype, {"GS Subtype", "fcct.gssubtype", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_server, {"Server", "fcct.server", FT_UINT8, BASE_HEX, VALS (fc_ct_gsserver_vals), 0x0, "Derived from GS Type & Subtype fields", HFILL}}, { &hf_fcct_options, {"Options", "fcct.options", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_ext_said, {"Auth SAID", "fcct.ext_said", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_ext_tid, {"Transaction ID", "fcct.ext_tid", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_ext_reqname, {"Requestor Port Name", "fcct_ext_reqnm", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_ext_tstamp, {"Timestamp", "fcct_ext_tstamp", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL}}, { &hf_fcct_ext_authblk, {"Auth Hash Blk", "fcct_ext_authblk", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL}}, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_fcct, &ett_fcct_ext, }; /* Register the protocol name and description */ proto_fcct = proto_register_protocol("Fibre Channel Common Transport", "FC_CT", "fcct"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_fcct, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); fcct_gserver_table = register_dissector_table ("fcct.server", "Server", FT_UINT8, BASE_HEX); } /* If this dissector uses sub-dissector registration add a registration routine. This format is required because a script is used to find these routines and create the code that calls these routines. */ void proto_reg_handoff_fcct (void) { dissector_handle_t fcct_handle; fcct_handle = create_dissector_handle (dissect_fcct, proto_fcct); dissector_add("fc.ftype", FC_FTYPE_FCCT, fcct_handle); data_handle = find_dissector ("data"); }