diff options
Diffstat (limited to 'plugins/epan/wimax/msg_res_cmd.c')
| -rw-r--r-- | plugins/epan/wimax/msg_res_cmd.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/plugins/epan/wimax/msg_res_cmd.c b/plugins/epan/wimax/msg_res_cmd.c new file mode 100644 index 0000000000..d02164f316 --- /dev/null +++ b/plugins/epan/wimax/msg_res_cmd.c @@ -0,0 +1,166 @@ +/* msg_res_cmd.c + * WiMax MAC Management RES-CMD Message decoder + * + * Copyright (c) 2007 by Intel Corporation. + * + * Author: Lu Pan <lu.pan@intel.com> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1999 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#if 0 +#define DEBUG /* for debug only */ +#endif + +/* Include files */ + +#include "config.h" + +#include <epan/packet.h> +#include "wimax_tlv.h" +#include "wimax_mac.h" +#include "wimax_utils.h" + +void proto_register_mac_mgmt_msg_res_cmd(void); +void proto_reg_handoff_mac_mgmt_msg_res_cmd(void); + +static gint proto_mac_mgmt_msg_res_cmd_decoder = -1; +static gint ett_mac_mgmt_msg_res_cmd_decoder = -1; + +/* fix fields */ +static gint hf_res_cmd_unknown_type = -1; +static gint hf_res_cmd_invalid_tlv = -1; + + +/* Wimax Mac RES-CMD Message Dissector */ +static int dissect_mac_mgmt_msg_res_cmd_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + guint offset = 0; + guint tvb_len; + gint tlv_type, tlv_len, tlv_value_offset; + proto_item *res_cmd_item; + proto_tree *res_cmd_tree; + proto_tree *tlv_tree = NULL; + tlv_info_t tlv_info; + + { /* we are being asked for details */ + /* Get the tvb reported length */ + tvb_len = tvb_reported_length(tvb); + /* display MAC payload type RES-CMD */ + res_cmd_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_res_cmd_decoder, tvb, offset, -1, "Reset Command (RES-CMD)"); + /* add MAC RES-CMD subtree */ + res_cmd_tree = proto_item_add_subtree(res_cmd_item, ett_mac_mgmt_msg_res_cmd_decoder); + /* Decode and display the Reset Command (RES-CMD) */ + /* process the RES-CMD TLVs */ + while(offset < tvb_len) + { + /* get the TLV information */ + init_tlv_info(&tlv_info, tvb, offset); + /* get the TLV type */ + tlv_type = get_tlv_type(&tlv_info); + /* get the TLV length */ + tlv_len = get_tlv_length(&tlv_info); + if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1) + { /* invalid tlv info */ + col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "RES-CMD TLV error"); + proto_tree_add_item(res_cmd_tree, hf_res_cmd_invalid_tlv, tvb, offset, (tvb_len - offset), ENC_NA); + break; + } + /* get the TLV value offset */ + tlv_value_offset = get_tlv_value_offset(&tlv_info); +#ifdef DEBUG /* for debug only */ + proto_tree_add_protocol_format(res_cmd_tree, proto_mac_mgmt_msg_res_cmd_decoder, tvb, offset, (tlv_len + tlv_value_offset), "RES-CMD Type: %u (%u bytes, offset=%u, tlv_len=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tlv_len, tvb_len); +#endif + /* process RES-CMD TLV Encoded information */ + switch (tlv_type) + { + case HMAC_TUPLE: /* Table 348d */ + /* decode and display the HMAC Tuple */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_res_cmd_decoder, res_cmd_tree, proto_mac_mgmt_msg_res_cmd_decoder, tvb, offset, tlv_len, "HMAC Tuple"); + wimax_hmac_tuple_decoder(tlv_tree, tvb, offset+tlv_value_offset, tlv_len); + break; + case CMAC_TUPLE: /* Table 348b */ + /* decode and display the CMAC Tuple */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_res_cmd_decoder, res_cmd_tree, proto_mac_mgmt_msg_res_cmd_decoder, tvb, offset, tlv_len, "CMAC Tuple"); + wimax_cmac_tuple_decoder(tlv_tree, tvb, offset+tlv_value_offset, tlv_len); + break; + default: + /* display the unknown tlv in hex */ + add_tlv_subtree(&tlv_info, res_cmd_tree, hf_res_cmd_unknown_type, tvb, offset, ENC_NA); + break; + } + offset += (tlv_len+tlv_value_offset); + } /* end of TLV process while loop */ + } + return tvb_captured_length(tvb); +} + +/* Register Wimax Mac RES-CMD Message Dissector */ +void proto_register_mac_mgmt_msg_res_cmd(void) +{ + /* DSx display */ + static hf_register_info hf_res_cmd[] = + { + { + &hf_res_cmd_invalid_tlv, + {"Invalid TLV", "wmx.res_cmd.invalid_tlv", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL} + }, + { + &hf_res_cmd_unknown_type, + {"Unknown TLV type", "wmx.res_cmd.unknown_tlv_type", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL} + } + }; + + /* Setup protocol subtree array */ + static gint *ett_res_cmd[] = + { + &ett_mac_mgmt_msg_res_cmd_decoder, + }; + + proto_mac_mgmt_msg_res_cmd_decoder = proto_register_protocol ( + "WiMax RES-CMD Message", /* name */ + "WiMax RES-CMD (res)", /* short name */ + "wmx.res" /* abbrev */ + ); + + proto_register_field_array(proto_mac_mgmt_msg_res_cmd_decoder, hf_res_cmd, array_length(hf_res_cmd)); + proto_register_subtree_array(ett_res_cmd, array_length(ett_res_cmd)); +} + +void +proto_reg_handoff_mac_mgmt_msg_res_cmd(void) +{ + dissector_handle_t handle; + + handle = create_dissector_handle(dissect_mac_mgmt_msg_res_cmd_decoder, proto_mac_mgmt_msg_res_cmd_decoder); + dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_RES_CMD, handle); +} + +/* + * Editor modelines - http://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: t + * End: + * + * vi: set shiftwidth=8 tabstop=8 noexpandtab: + * :indentSize=8:tabSize=8:noTabs=false: + */ |