269 lines
6.5 KiB
C
269 lines
6.5 KiB
C
/* packet-klm.c 2001 Ronnie Sahlberg <See AUTHORS for email>
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* Routines for klm dissection
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include "packet-nfs.h"
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void proto_register_klm(void);
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void proto_reg_handoff_klm(void);
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static int proto_klm = -1;
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static int hf_klm_procedure_v1 = -1;
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static int hf_klm_exclusive = -1;
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static int hf_klm_lock = -1;
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static int hf_klm_servername = -1;
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static int hf_klm_pid = -1;
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static int hf_klm_offset = -1;
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static int hf_klm_len = -1;
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static int hf_klm_stats = -1;
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static int hf_klm_holder = -1;
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static int hf_klm_block = -1;
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static gint ett_klm = -1;
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static gint ett_klm_lock = -1;
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static gint ett_klm_holder = -1;
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#define KLMPROC_TEST 1
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#define KLMPROC_LOCK 2
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#define KLMPROC_CANCEL 3
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#define KLMPROC_UNLOCK 4
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#define KLM_PROGRAM 100020
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static const value_string names_klm_stats[] =
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{
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#define KLM_GRANTED 0
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{ KLM_GRANTED, "KLM_GRANTED" },
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#define KLM_DENIED 1
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{ KLM_DENIED, "KLM_DENIED" },
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#define KLM_DENIED_NOLOCKS 2
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{ KLM_DENIED_NOLOCKS, "KLM_DENIED_NOLOCKS" },
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#define KLM_WORKING 3
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{ KLM_WORKING, "KLM_WORKING" },
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{ 0, NULL }
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};
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static int
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dissect_holder(tvbuff_t *tvb, proto_tree *tree, int offset)
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{
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proto_item* lock_item = NULL;
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proto_tree* lock_tree = NULL;
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lock_item = proto_tree_add_item(tree, hf_klm_holder, tvb,
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offset, -1, ENC_NA);
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lock_tree = proto_item_add_subtree(lock_item, ett_klm_holder);
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offset = dissect_rpc_bool( tvb, lock_tree,
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hf_klm_exclusive, offset);
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offset = dissect_rpc_uint32(tvb, lock_tree,
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hf_klm_pid, offset);
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offset = dissect_rpc_uint32(tvb, lock_tree,
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hf_klm_offset, offset);
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offset = dissect_rpc_uint32(tvb, lock_tree,
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hf_klm_len, offset);
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return offset;
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}
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static int
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dissect_lock(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, rpc_call_info_value *civ)
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{
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proto_item* lock_item = NULL;
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proto_tree* lock_tree = NULL;
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lock_item = proto_tree_add_item(tree, hf_klm_lock, tvb,
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offset, -1, ENC_NA);
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lock_tree = proto_item_add_subtree(lock_item, ett_klm_lock);
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offset = dissect_rpc_string(tvb, lock_tree,
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hf_klm_servername, offset, NULL);
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offset = dissect_nfs3_fh(tvb, offset, pinfo, lock_tree,"fh", NULL, civ);
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offset = dissect_rpc_uint32(tvb, lock_tree,
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hf_klm_pid, offset);
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offset = dissect_rpc_uint32(tvb, lock_tree,
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hf_klm_offset, offset);
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offset = dissect_rpc_uint32(tvb, lock_tree,
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hf_klm_len, offset);
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return offset;
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}
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static int
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dissect_klm_unlock_call(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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return dissect_lock(tvb, pinfo, tree, 0, (rpc_call_info_value*)data);
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}
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static int
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dissect_klm_stat_reply(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
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{
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return dissect_rpc_uint32(tvb, tree, hf_klm_stats, 0);
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}
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static int
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dissect_klm_lock_call(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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int offset = 0;
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offset = dissect_rpc_bool( tvb, tree,
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hf_klm_block, offset);
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offset = dissect_rpc_bool( tvb, tree,
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hf_klm_exclusive, offset);
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offset = dissect_lock(tvb, pinfo, tree, offset, (rpc_call_info_value*)data);
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return offset;
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}
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static int
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dissect_klm_test_reply(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
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{
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gint32 stats;
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int offset = 0;
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stats = tvb_get_ntohl(tvb, offset);
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offset = dissect_rpc_uint32(tvb, tree,
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hf_klm_stats, offset);
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if (stats == KLM_DENIED) {
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offset = dissect_holder(tvb, tree, offset);
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}
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return offset;
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}
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static int
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dissect_klm_test_call(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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int offset = 0;
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offset = dissect_rpc_bool( tvb, tree,
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hf_klm_exclusive, offset);
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offset = dissect_lock(tvb, pinfo, tree, offset, (rpc_call_info_value*)data);
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return offset;
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}
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/* proc number, "proc name", dissect_request, dissect_reply */
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static const vsff klm1_proc[] = {
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{ KLMPROC_TEST, "TEST",
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dissect_klm_test_call, dissect_klm_test_reply },
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{ KLMPROC_LOCK, "LOCK",
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dissect_klm_lock_call, dissect_klm_stat_reply },
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{ KLMPROC_CANCEL, "CANCEL",
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dissect_klm_lock_call, dissect_klm_stat_reply },
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{ KLMPROC_UNLOCK, "UNLOCK",
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dissect_klm_unlock_call, dissect_klm_stat_reply },
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{ 0, NULL, NULL, NULL }
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};
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static const rpc_prog_vers_info klm_vers_info[] = {
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{ 1, klm1_proc, &hf_klm_procedure_v1 },
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};
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static const value_string klm1_proc_vals[] = {
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{ KLMPROC_TEST, "TEST" },
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{ KLMPROC_LOCK, "LOCK" },
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{ KLMPROC_CANCEL, "CANCEL" },
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{ KLMPROC_UNLOCK, "UNLOCK" },
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{ 0, NULL}
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};
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void
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proto_register_klm(void)
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{
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static struct true_false_string tfs_exclusive = { "Exclusive", "Not exclusive" };
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static struct true_false_string tfs_block = { "Block", "Do not block" };
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static hf_register_info hf[] = {
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{ &hf_klm_procedure_v1, {
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"V1 Procedure", "klm.procedure_v1", FT_UINT32, BASE_DEC,
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VALS(klm1_proc_vals), 0, NULL, HFILL }},
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{ &hf_klm_exclusive, {
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"exclusive", "klm.exclusive", FT_BOOLEAN, BASE_NONE,
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TFS(&tfs_exclusive), 0x0, "Exclusive lock", HFILL }},
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{ &hf_klm_lock, {
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"lock", "klm.lock", FT_NONE, BASE_NONE,
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NULL, 0, "KLM lock structure", HFILL }},
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{ &hf_klm_servername, {
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"server name", "klm.servername", FT_STRING, BASE_NONE,
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NULL, 0, NULL, HFILL }},
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{ &hf_klm_pid, {
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"pid", "klm.pid", FT_UINT32, BASE_DEC,
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NULL, 0, "ProcessID", HFILL }},
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{ &hf_klm_offset, {
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"offset", "klm.offset", FT_UINT32, BASE_DEC,
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NULL, 0, "File offset", HFILL }},
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{ &hf_klm_len, {
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"length", "klm.len", FT_UINT32, BASE_DEC,
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NULL, 0, "Length of lock region", HFILL }},
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{ &hf_klm_stats, {
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"stats", "klm.stats", FT_UINT32, BASE_DEC,
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VALS(names_klm_stats), 0, NULL, HFILL }},
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{ &hf_klm_holder, {
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"holder", "klm.holder", FT_NONE, BASE_NONE,
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NULL, 0, "KLM lock holder", HFILL }},
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{ &hf_klm_block, {
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"block", "klm.block", FT_BOOLEAN, BASE_NONE,
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TFS(&tfs_block), 0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_klm,
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&ett_klm_lock,
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&ett_klm_holder,
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};
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proto_klm = proto_register_protocol("Kernel Lock Manager",
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"KLM", "klm");
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proto_register_field_array(proto_klm, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_klm(void)
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{
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/* Register the protocol as RPC */
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rpc_init_prog(proto_klm, KLM_PROGRAM, ett_klm,
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G_N_ELEMENTS(klm_vers_info), klm_vers_info);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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