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Diffstat (limited to 'epan/dissectors/packet-ctdb.c')
-rw-r--r-- | epan/dissectors/packet-ctdb.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/epan/dissectors/packet-ctdb.c b/epan/dissectors/packet-ctdb.c new file mode 100644 index 0000000000..c131e6e73d --- /dev/null +++ b/epan/dissectors/packet-ctdb.c @@ -0,0 +1,277 @@ +/* packet-ctdb.c + * Routines for CTDB (Cluster TDB) dissection + * Copyright 2007, Ronnie Sahlberg + * + * $Id$ + * + * 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/prefs.h> +#include <epan/value_string.h> +#include <epan/conversation.h> +#include <epan/emem.h> + +/* Initialize the protocol and registered fields */ +static int proto_ctdb = -1; +static int hf_ctdb_length = -1; +static int hf_ctdb_opcode = -1; +static int hf_ctdb_dst = -1; +static int hf_ctdb_src = -1; +static int hf_ctdb_id = -1; +static int hf_ctdb_flags_immediate = -1; +static int hf_ctdb_dbid = -1; +static int hf_ctdb_callid = -1; +static int hf_ctdb_status = -1; +static int hf_ctdb_datalen = -1; + +/* Initialize the subtree pointers */ +static gint ett_ctdb = -1; + + + +#define CTDB_REQ_CALL 0 +#define CTDB_REPLY_CALL 1 +#define CTDB_REPLY_REDIRECT 2 +#define CTDB_REQ_DMASTER 3 +#define CTDB_REPLY_DMASTER 4 +#define CTDB_REPLY_ERROR 5 +#define CTDB_REQ_MESSAGE 6 +static const value_string ctdb_opcodes[] = { + {CTDB_REQ_CALL, "CTDB_REQ_CALL"}, + {CTDB_REPLY_CALL, "CTDB_REPLY_CALL"}, + {CTDB_REPLY_REDIRECT, "CTDB_REPLY_REDIRECT"}, + {CTDB_REQ_DMASTER, "CTDB_REQ_DMASTER"}, + {CTDB_REPLY_DMASTER, "CTDB_REPLY_DMASTER"}, + {CTDB_REPLY_ERROR, "CTDB_REPLY_ERROR"}, + {CTDB_REQ_MESSAGE, "CTDB_REQ_MESSAGE"}, + {0,NULL} +}; + + +static int +dissect_ctdb_reply_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) +{ + /* status */ + proto_tree_add_item(tree, hf_ctdb_status, tvb, offset, 4, TRUE); + offset+=4; + + /* datalen */ + proto_tree_add_item(tree, hf_ctdb_datalen, tvb, offset, 4, TRUE); + offset+=4; + + /* data */ + + return offset; +} + +static int +dissect_ctdb_reply_dmaster(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) +{ + /* datalen */ + proto_tree_add_item(tree, hf_ctdb_datalen, tvb, offset, 4, TRUE); + offset+=4; + + /* data */ + + return offset; +} + +static const true_false_string flags_immediate_tfs={ + "DMASTER for the record must IMMEDIATELY be migrated to the caller", + "Dmaster migration is not required" +}; + +static int +dissect_ctdb_req_call(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) +{ + guint32 flags; + + /* flags */ + proto_tree_add_item(tree, hf_ctdb_flags_immediate, tvb, offset, 4, TRUE); + flags=tvb_get_letohl(tvb, offset); + if(flags&0x00000001){ + if(check_col(pinfo->cinfo, COL_INFO)){ + col_append_fstr(pinfo->cinfo, COL_INFO, " IMMEDIATE"); + } + } + offset+=4; + + /* dbid */ + proto_tree_add_item(tree, hf_ctdb_dbid, tvb, offset, 4, TRUE); + offset+=4; + + /* callid */ + proto_tree_add_item(tree, hf_ctdb_callid, tvb, offset, 4, TRUE); + offset+=4; + + /* keylen */ + /* calldatalen */ + /* data */ + return offset; +} + + +static gboolean +dissect_ctdb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree) +{ + proto_tree *tree=NULL; + proto_item *item=NULL; + int offset=0; + guint32 opcode, src, dst; + + if(check_col(pinfo->cinfo, COL_PROTOCOL)){ + col_set_str(pinfo->cinfo, COL_PROTOCOL, "CTDB"); + } + if(check_col(pinfo->cinfo, COL_INFO)){ + col_clear(pinfo->cinfo, COL_INFO); + } + + if(parent_tree){ + item=proto_tree_add_item(parent_tree, proto_ctdb, tvb, offset, + -1, TRUE); + tree=proto_item_add_subtree(item, ett_ctdb); + } + + /* header*/ + /* length */ + proto_tree_add_item(tree, hf_ctdb_length, tvb, offset, 4, TRUE); + offset+=4; + + /* opcode */ + proto_tree_add_item(tree, hf_ctdb_opcode, tvb, offset, 4, TRUE); + opcode=tvb_get_letohl(tvb, offset); + offset+=4; + + /* dst */ + proto_tree_add_item(tree, hf_ctdb_dst, tvb, offset, 4, TRUE); + dst=tvb_get_letohl(tvb, offset); + offset+=4; + + /* src */ + proto_tree_add_item(tree, hf_ctdb_src, tvb, offset, 4, TRUE); + src=tvb_get_letohl(tvb, offset); + offset+=4; + + /* id */ + proto_tree_add_item(tree, hf_ctdb_id, tvb, offset, 4, TRUE); + offset+=4; + + if(check_col(pinfo->cinfo, COL_INFO)){ + col_append_fstr(pinfo->cinfo, COL_INFO, "%s %d->%d", + val_to_str(opcode, ctdb_opcodes, "Unknown:%d"), + src, dst); + } + + switch(opcode){ + case CTDB_REQ_CALL: + offset=dissect_ctdb_req_call(tvb, offset, pinfo, tree); + break; + case CTDB_REPLY_CALL: + offset=dissect_ctdb_reply_call(tvb, offset, pinfo, tree); + break; + case CTDB_REPLY_DMASTER: + offset=dissect_ctdb_reply_dmaster(tvb, offset, pinfo, tree); + break; + case CTDB_REPLY_REDIRECT: + break; + case CTDB_REQ_DMASTER: + break; + case CTDB_REPLY_ERROR: + break; + case CTDB_REQ_MESSAGE: + break; + }; + + return TRUE; +} + + +/* + * Register the protocol with Wireshark + */ +void +proto_register_ctdb(void) +{ + static hf_register_info hf[] = { + { &hf_ctdb_length, { + "Length", "ctdb.len", FT_UINT32, BASE_DEC, + NULL, 0x0, "Size of CTDB PDU", HFILL }}, + { &hf_ctdb_dst, { + "Destination", "ctdb.dst", FT_UINT32, BASE_DEC, + NULL, 0x0, "", HFILL }}, + { &hf_ctdb_src, { + "Source", "ctdb.src", FT_UINT32, BASE_DEC, + NULL, 0x0, "", HFILL }}, + { &hf_ctdb_id, { + "Id", "ctdb.id", FT_UINT32, BASE_DEC, + NULL, 0x0, "Transaction ID", HFILL }}, + { &hf_ctdb_opcode, { + "Opcode", "ctdb.opcode", FT_UINT32, BASE_DEC, + VALS(ctdb_opcodes), 0x0, "CTDB command opcode", HFILL }}, + { &hf_ctdb_flags_immediate, { + "Immediate", "ctdb.immediate", FT_BOOLEAN, 32, + TFS(&flags_immediate_tfs), 0x00000001, "Force migration of DMASTER?", HFILL }}, + { &hf_ctdb_dbid, { + "DB Id", "ctdb.dbid", FT_UINT32, BASE_HEX, + NULL, 0x0, "Database ID", HFILL }}, + { &hf_ctdb_callid, { + "Call Id", "ctdb.callid", FT_UINT32, BASE_DEC, + NULL, 0x0, "Call ID", HFILL }}, + { &hf_ctdb_status, { + "Status", "ctdb.status", FT_UINT32, BASE_DEC, + NULL, 0x0, "", HFILL }}, + { &hf_ctdb_datalen, { + "Data Length", "ctdb.datalen", FT_UINT32, BASE_DEC, + NULL, 0x0, "", HFILL }}, + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_ctdb, + }; + + /* Register the protocol name and description */ + proto_ctdb = proto_register_protocol("Cluster TDB", "CTDB", "ctdb"); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_ctdb, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + + +void +proto_reg_handoff_ctdb(void) +{ + dissector_handle_t ctdb_handle; + + ctdb_handle = new_create_dissector_handle(dissect_ctdb, proto_ctdb); + dissector_add_handle("tcp.port", ctdb_handle); +} |