forked from osmocom/wireshark
![Jeff Morriss](/assets/img/avatar_default.png)
- s/ntohl/g_ntohl - s/free/g_free - Change some tvb_get_string()+g_free()'s into tvb_get_ephemeral_string() - Change some tvb_fake_unicode()+g_free()'s into tvb_get_ephemeral_faked_unicode() - Change some tvb_get_string() calls that were clearly memory leaks (like atoi(tvb_get_string(...))) into tvb_get_ephemeral_string() svn path=/trunk/; revision=22515
313 lines
10 KiB
C
313 lines
10 KiB
C
/* packet-fcct.c
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* Routines for FC Common Transport Protocol (used by GS3 services)
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* Copyright 2001, Dinesh G Dutt <ddutt@andiamo.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/etypes.h>
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#include <epan/conversation.h>
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#include "packet-scsi.h"
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#include "packet-fc.h"
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#include "packet-fcct.h"
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/* Initialize the protocol and registered fields */
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static int proto_fcct = -1;
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static int hf_fcct_revision = -1;
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static int hf_fcct_inid = -1;
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static int hf_fcct_gstype = -1;
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static int hf_fcct_gssubtype = -1;
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static int hf_fcct_options = -1;
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static int hf_fcct_server = -1; /* derived field */
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/* Extended preamble fields */
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static int hf_fcct_ext_said = -1;
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static int hf_fcct_ext_tid = -1;
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static int hf_fcct_ext_reqname = -1;
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static int hf_fcct_ext_tstamp = -1;
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static int hf_fcct_ext_authblk = -1;
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/* Initialize the subtree pointers */
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static gint ett_fcct = -1;
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static gint ett_fcct_ext = -1; /* for the extended header */
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const value_string fc_ct_rjt_code_vals [] = {
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{FCCT_RJT_INVCMDCODE, "Invalid Cmd Code"},
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{FCCT_RJT_INVVERSION, "Invalid Version Level"},
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{FCCT_RJT_LOGICALERR, "Logical Error"},
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{FCCT_RJT_INVSIZE, "Invalid CT_IU Size"},
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{FCCT_RJT_LOGICALBSY, "Logical Busy"},
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{FCCT_RJT_PROTOERR, "Protocol Error"},
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{FCCT_RJT_GENFAIL, "Unable to Perform Cmd"},
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{FCCT_RJT_CMDNOTSUPP, "Cmd Not Supported"},
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{0, NULL},
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};
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const value_string fc_ct_gstype_vals[] = {
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{FCCT_GSTYPE_KEYSVC, "Key Service"},
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{FCCT_GSTYPE_ALIASSVC, "Alias Service"},
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{FCCT_GSTYPE_MGMTSVC, "Management Service"},
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{FCCT_GSTYPE_TIMESVC, "Time Service"},
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{FCCT_GSTYPE_DIRSVC, "Directory Service"},
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{FCCT_GSTYPE_FCTLR, "Fabric Controller"},
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{FCCT_GSTYPE_VENDOR, "Vendor-Specific"},
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{0, NULL},
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};
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const value_string fc_ct_gsserver_vals[] = {
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{FCCT_GSRVR_DNS, "dNS"},
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{FCCT_GSRVR_IP, "IP"},
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{FCCT_GSRVR_FCS, "Fabric Config Server"},
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{FCCT_GSRVR_UNS, "Unzoned Name Server"},
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{FCCT_GSRVR_FZS, "Fabric Zone Server"},
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{FCCT_GSRVR_TS, "Time Server"},
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{FCCT_GSRVR_KS, "Key Server"},
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{FCCT_GSRVR_AS, "Alias Server"},
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{FCCT_GSRVR_FCTLR, "Fabric Controller"},
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{0, NULL},
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};
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static dissector_table_t fcct_gserver_table;
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static dissector_handle_t data_handle;
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guint8
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get_gs_server (guint8 gstype, guint8 gssubtype)
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{
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switch (gstype) {
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case FCCT_GSTYPE_KEYSVC:
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return FCCT_GSRVR_KS;
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case FCCT_GSTYPE_ALIASSVC:
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if (gssubtype == FCCT_GSSUBTYPE_AS)
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return FCCT_GSRVR_AS;
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return FCCT_GSRVR_UNKNOWN;
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case FCCT_GSTYPE_MGMTSVC:
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if (gssubtype == FCCT_GSSUBTYPE_FCS)
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return FCCT_GSRVR_FCS;
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else if (gssubtype == FCCT_GSSUBTYPE_UNS)
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return FCCT_GSRVR_UNS;
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else if (gssubtype == FCCT_GSSUBTYPE_FZS)
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return FCCT_GSRVR_FZS;
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else return FCCT_GSRVR_UNKNOWN;
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case FCCT_GSTYPE_TIMESVC:
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if (gssubtype == FCCT_GSSUBTYPE_TS)
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return FCCT_GSRVR_TS;
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return FCCT_GSRVR_UNKNOWN;
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case FCCT_GSTYPE_DIRSVC:
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if (gssubtype == FCCT_GSSUBTYPE_DNS)
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return FCCT_GSRVR_DNS;
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else if (gssubtype == FCCT_GSSUBTYPE_IP)
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return FCCT_GSRVR_IP;
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return FCCT_GSRVR_UNKNOWN;
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case FCCT_GSRVR_FCTLR:
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if (gssubtype == FCCT_GSSUBTYPE_FCTLR)
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return (FCCT_GSRVR_FCTLR);
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else return (FCCT_GSRVR_UNKNOWN);
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default:
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return FCCT_GSRVR_UNKNOWN;
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}
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}
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/* Code to actually dissect the packets */
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static void
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dissect_fcct (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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/* Set up structures needed to add the protocol subtree and manage it */
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proto_item *ti;
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proto_tree *fcct_tree;
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tvbuff_t *next_tvb;
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int in_id,
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offset = 0;
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guint8 server;
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fc_ct_preamble cthdr;
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/* Make entries in Protocol column and Info column on summary display */
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "FC_CT");
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/*
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cthdr.revision = tvb_get_guint8 (tvb, offset++);
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cthdr.in_id = tvb_get_ntoh24 (tvb, offset);
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offset += 3;
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cthdr.gstype = tvb_get_guint8 (tvb, offset++);
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cthdr.options = tvb_get_guint8 (tvb, offset++);
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*/
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tvb_memcpy (tvb, (guint8 *)&cthdr, offset, FCCT_PRMBL_SIZE);
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cthdr.revision = tvb_get_guint8 (tvb, offset++);
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cthdr.in_id = tvb_get_ntoh24 (tvb, offset);
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cthdr.opcode = g_ntohs (cthdr.opcode);
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cthdr.maxres_size = g_ntohs (cthdr.maxres_size);
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if (check_col (pinfo->cinfo, COL_INFO)) {
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if (cthdr.opcode < FCCT_MSG_REQ_MAX) {
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col_append_str (pinfo->cinfo, COL_INFO, " Request");
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}
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else if (cthdr.opcode == FCCT_MSG_ACC) {
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col_append_str (pinfo->cinfo, COL_INFO, " Accept");
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}
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else if (cthdr.opcode == FCCT_MSG_RJT) {
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col_append_fstr (pinfo->cinfo, COL_INFO, " Reject (%s)",
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val_to_str (cthdr.rjt_code, fc_ct_rjt_code_vals, "0x%x"));
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}
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else {
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col_append_str (pinfo->cinfo, COL_INFO, " Reserved");
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}
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}
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in_id = cthdr.in_id;
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in_id = g_htonl (in_id) >> 8;
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/* Determine server */
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server = get_gs_server (cthdr.gstype, cthdr.gssubtype);
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if (tree) {
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offset = 0;
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ti = proto_tree_add_protocol_format (tree, proto_fcct, tvb, 0, FCCT_PRMBL_SIZE,
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"FC_CT");
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fcct_tree = proto_item_add_subtree (ti, ett_fcct);
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proto_tree_add_item (fcct_tree, hf_fcct_revision, tvb, offset++,
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sizeof (guint8), 0);
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proto_tree_add_string (fcct_tree, hf_fcct_inid, tvb, offset, 3,
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fc_to_str ((guint8 *)&in_id));
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offset += 3; /* sizeof FC address */
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proto_tree_add_item (fcct_tree, hf_fcct_gstype, tvb, offset++,
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sizeof (guint8), 0);
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proto_tree_add_item (fcct_tree, hf_fcct_gssubtype, tvb, offset,
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sizeof (guint8), 0);
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proto_tree_add_uint (fcct_tree, hf_fcct_server, tvb, offset++, 1,
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server);
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proto_tree_add_item (fcct_tree, hf_fcct_options, tvb, offset++,
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sizeof (guint8), 0);
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}
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/* We do not change the starting offset for the next protocol in the
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* chain since the fc_ct header is common to the sub-protocols.
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*/
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next_tvb = tvb_new_subset (tvb, 0, -1, -1);
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if (!dissector_try_port (fcct_gserver_table, server, next_tvb, pinfo,
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tree)) {
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call_dissector (data_handle, next_tvb, pinfo, tree);
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}
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}
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/* Register the protocol with Wireshark */
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/* this format is require because a script is used to build the C function
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that calls all the protocol registration.
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*/
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void
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proto_register_fcct(void)
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{
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/* Setup list of header fields See Section 1.6.1 for details*/
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static hf_register_info hf[] = {
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{ &hf_fcct_revision,
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{"Revision", "fcct.revision", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
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{ &hf_fcct_inid,
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{"IN_ID", "fcct.in_id", FT_STRING, BASE_HEX, NULL, 0x0, "", HFILL}},
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{ &hf_fcct_gstype,
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{"GS Type", "fcct.gstype", FT_UINT8, BASE_HEX, VALS(fc_ct_gstype_vals),
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0x0, "", HFILL}},
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{ &hf_fcct_gssubtype,
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{"GS Subtype", "fcct.gssubtype", FT_UINT8, BASE_HEX, NULL, 0x0,
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"", HFILL}},
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{ &hf_fcct_server,
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{"Server", "fcct.server", FT_UINT8, BASE_HEX,
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VALS (fc_ct_gsserver_vals), 0x0,
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"Derived from GS Type & Subtype fields", HFILL}},
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{ &hf_fcct_options,
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{"Options", "fcct.options", FT_UINT8, BASE_HEX, NULL, 0x0, "",
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HFILL}},
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{ &hf_fcct_ext_said,
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{"Auth SAID", "fcct.ext_said", FT_UINT32, BASE_HEX, NULL, 0x0, "",
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HFILL}},
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{ &hf_fcct_ext_tid,
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{"Transaction ID", "fcct.ext_tid", FT_UINT32, BASE_HEX, NULL, 0x0, "",
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HFILL}},
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{ &hf_fcct_ext_reqname,
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{"Requestor Port Name", "fcct_ext_reqnm", FT_BYTES, BASE_HEX, NULL,
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0x0, "", HFILL}},
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{ &hf_fcct_ext_tstamp,
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{"Timestamp", "fcct_ext_tstamp", FT_BYTES, BASE_HEX, NULL, 0x0, "",
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HFILL}},
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{ &hf_fcct_ext_authblk,
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{"Auth Hash Blk", "fcct_ext_authblk", FT_BYTES, BASE_HEX, NULL, 0x0,
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"", HFILL}},
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_fcct,
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&ett_fcct_ext,
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};
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/* Register the protocol name and description */
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proto_fcct = proto_register_protocol("Fibre Channel Common Transport", "FC_CT", "fcct");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_fcct, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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fcct_gserver_table = register_dissector_table ("fcct.server",
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"Server",
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FT_UINT8, BASE_HEX);
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}
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/* If this dissector uses sub-dissector registration add a registration routine.
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This format is required because a script is used to find these routines and
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create the code that calls these routines.
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*/
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void
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proto_reg_handoff_fcct (void)
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{
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dissector_handle_t fcct_handle;
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fcct_handle = create_dissector_handle (dissect_fcct, proto_fcct);
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dissector_add("fc.ftype", FC_FTYPE_FCCT, fcct_handle);
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data_handle = find_dissector ("data");
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}
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