diff options
Diffstat (limited to 'plugins/docsis/packet-bpkmreq.c')
| -rw-r--r-- | plugins/docsis/packet-bpkmreq.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/plugins/docsis/packet-bpkmreq.c b/plugins/docsis/packet-bpkmreq.c new file mode 100644 index 0000000000..b7db149705 --- /dev/null +++ b/plugins/docsis/packet-bpkmreq.c @@ -0,0 +1,199 @@ +/* packet-bpkmreq.c + * Routines for Baseline Privacy Key Management Request dissection + * Copyright 2002, Anand V. Narwani <anarwani@cisco.com> + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * 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 "plugins/plugin_api.h" +#include "plugins/plugin_api_defs.h" +#include "moduleinfo.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif + +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif + +#include <gmodule.h> + +#ifdef NEED_SNPRINTF_H +# include "snprintf.h" +#endif + +#include <epan/packet.h> + +/* Initialize the protocol and registered fields */ +static int proto_docsis_bpkmreq = -1; +static int hf_docsis_bpkmreq = -1; +static int hf_docsis_bpkmreq_code = -1; +static int hf_docsis_bpkmreq_length = -1; +static int hf_docsis_bpkmreq_ident = -1; + +static const value_string code_field_vals[] = { + {0, "Reserved"}, + {1, "Reserved"}, + {2, "Reserved"}, + {3, "Reserved"}, + {4, "Auth Request"}, + {5, "Auth Reply"}, + {6, "Auth Reject"}, + {7, "Key Request"}, + {8, "Key Reply"}, + {9, "Key Reject"}, + {10, "Auth Invalid"}, + {11, "TEK Invalid"}, + {12, "Authent Info"}, + {13, "Map Request"}, + {14, "Map Reply"}, + {15, "Map Reject"}, + {0, NULL}, +}; + + +/* Initialize the subtree pointers */ +static gint ett_docsis_bpkmreq = -1; + +static dissector_handle_t attrs_handle; + +/* Code to actually dissect the packets */ +static void +dissect_bpkmreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree) +{ + + proto_item *it; + proto_tree *bpkmreq_tree; + guint8 code; + guint16 attrs_len; + tvbuff_t *attrs_tvb; + + code = tvb_get_guint8 (tvb, 0); + + if (check_col (pinfo->cinfo, COL_INFO)) + { + col_clear (pinfo->cinfo, COL_INFO); + col_add_fstr (pinfo->cinfo, COL_INFO, "BPKM Request (%s)", + val_to_str (code, code_field_vals, "%s")); + } + + if (tree) + { + it = + proto_tree_add_protocol_format (tree, proto_docsis_bpkmreq, tvb, 0, + tvb_length_remaining (tvb, 0), + "BPKM Request Message"); + bpkmreq_tree = proto_item_add_subtree (it, ett_docsis_bpkmreq); + proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_code, tvb, 0, 1, + FALSE); + proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_ident, tvb, 1, 1, + FALSE); + proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_length, tvb, 2, 2, + FALSE); + } + + /* Code to Call subdissector */ + attrs_len = tvb_length_remaining (tvb, 4); + attrs_tvb = tvb_new_subset (tvb, 4, attrs_len, attrs_len); + call_dissector (attrs_handle, attrs_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_docsis_bpkmreq (void) +{ + +/* Setup list of header fields See Section 1.6.1 for details*/ + static hf_register_info hf[] = { + {&hf_docsis_bpkmreq, + {"BPKM Request Message", "docsis.bpkmreq", + FT_BYTES, BASE_HEX, NULL, 0x0, + "BPKM Request Message", HFILL} + }, + {&hf_docsis_bpkmreq_code, + {"BPKM Code", "docsis.bpkmreq.code", + FT_UINT8, BASE_DEC, VALS (code_field_vals), 0x0, + "BPKM Request Message", HFILL} + }, + {&hf_docsis_bpkmreq_ident, + {"BPKM Identifier", "docsis.bpkmreq.ident", + FT_UINT8, BASE_DEC, NULL, 0x0, + "BPKM Identifier", HFILL} + }, + {&hf_docsis_bpkmreq_length, + {"BPKM Length", "docsis.bpkmreq.length", + FT_UINT16, BASE_DEC, NULL, 0x0, + "BPKM Length", HFILL} + }, + }; + +/* Setup protocol subtree array */ + static gint *ett[] = { + &ett_docsis_bpkmreq, + }; + +/* Register the protocol name and description */ + proto_docsis_bpkmreq = + proto_register_protocol ("DOCSIS Baseline Privacy Key Management Request", + "DOCSIS BPKM-REQ", "docsis_bpkmreq"); + +/* Required function calls to register the header fields and subtrees used */ + proto_register_field_array (proto_docsis_bpkmreq, hf, array_length (hf)); + proto_register_subtree_array (ett, array_length (ett)); + + register_dissector ("docsis_bpkmreq", dissect_bpkmreq, + proto_docsis_bpkmreq); +} + + +/* 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_docsis_bpkmreq (void) +{ + dissector_handle_t docsis_bpkmreq_handle; + + docsis_bpkmreq_handle = find_dissector ("docsis_bpkmreq"); + attrs_handle = find_dissector ("docsis_bpkmattr"); + dissector_add ("docsis_mgmt", 0x0C, docsis_bpkmreq_handle); + +} |