forked from osmocom/wireshark
201 lines
6.0 KiB
C
201 lines
6.0 KiB
C
/* packet-bjnp.c
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* Routines for Canon BJNP packet disassembly.
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*
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* Copyright 2009, Stig Bjorlykke <stig@bjorlykke.org>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#define PNAME "Canon BJNP"
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#define PSNAME "BJNP"
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#define PFNAME "bjnp"
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#define BJNP_PORT1 8611
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#define BJNP_PORT2 8612
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#define BJNP_PORT3 8613
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#define BJNP_PORT4 8614
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/* dev_type */
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#define PRINTER_COMMAND 0x01
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#define SCANNER_COMMAND 0x02
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#define PRINTER_RESPONSE 0x81
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#define SCANNER_RESPONSE 0x82
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/* cmd_code */
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#define CMD_DISCOVER 0x01
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#define CMD_PRINT_JOB_DET 0x10
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#define CMD_CLOSE 0x11
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#define CMD_GET_STATUS 0x20
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#define CMD_PRINT 0x21
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#define CMD_GET_ID 0x30
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#define CMD_SCAN_JOB 0x32
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void proto_register_bjnp(void);
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void proto_reg_handoff_bjnp(void);
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static int proto_bjnp = -1;
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static int hf_bjnp_id = -1;
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static int hf_dev_type = -1;
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static int hf_cmd_code = -1;
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static int hf_seq_no = -1;
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static int hf_session_id = -1;
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static int hf_payload_len = -1;
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static int hf_payload = -1;
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static gint ett_bjnp = -1;
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static dissector_handle_t bjnp_handle;
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static const value_string dev_type_vals[] = {
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{ PRINTER_COMMAND, "Printer Command" },
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{ SCANNER_COMMAND, "Scanner Command" },
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{ PRINTER_RESPONSE, "Printer Response" },
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{ SCANNER_RESPONSE, "Scanner Response" },
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{ 0, NULL }
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};
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static const value_string cmd_code_vals[] = {
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{ CMD_DISCOVER, "Discover" },
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{ CMD_PRINT_JOB_DET, "Print Job Details" },
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{ CMD_CLOSE, "Request Closure" },
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{ CMD_GET_STATUS, "Get Printer Status" },
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{ CMD_PRINT, "Print" },
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{ CMD_GET_ID, "Get Printer Identity" },
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{ CMD_SCAN_JOB, "Scan Job Details" },
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{ 0, NULL }
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};
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static int dissect_bjnp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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proto_tree *bjnp_tree;
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proto_item *ti;
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gint offset = 0;
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guint32 payload_len;
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guint8 dev_type, cmd_code;
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gchar *info;
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/* If it does not start with a printable character it's not BJNP */
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if(!g_ascii_isprint(tvb_get_guint8(tvb, 0)))
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return 0;
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col_set_str (pinfo->cinfo, COL_PROTOCOL, PSNAME);
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col_clear (pinfo->cinfo, COL_INFO);
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ti = proto_tree_add_item (tree, proto_bjnp, tvb, offset, -1, ENC_NA);
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bjnp_tree = proto_item_add_subtree (ti, ett_bjnp);
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proto_tree_add_item (bjnp_tree, hf_bjnp_id, tvb, offset, 4, ENC_ASCII|ENC_NA);
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offset += 4;
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dev_type = tvb_get_guint8 (tvb, offset);
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proto_tree_add_item (bjnp_tree, hf_dev_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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cmd_code = tvb_get_guint8 (tvb, offset);
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proto_tree_add_item (bjnp_tree, hf_cmd_code, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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info = wmem_strdup_printf(wmem_packet_scope(), "%s: %s",
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val_to_str (dev_type, dev_type_vals, "Unknown type (%d)"),
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val_to_str (cmd_code, cmd_code_vals, "Unknown code (%d)"));
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proto_item_append_text (ti, ", %s", info);
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col_add_str (pinfo->cinfo, COL_INFO, info);
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proto_tree_add_item (bjnp_tree, hf_seq_no, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item (bjnp_tree, hf_session_id, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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payload_len = tvb_get_ntohl (tvb, offset);
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proto_tree_add_item (bjnp_tree, hf_payload_len, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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if (payload_len > 0) {
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/* TBD: Dissect various commands */
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proto_tree_add_item (bjnp_tree, hf_payload, tvb, offset, payload_len, ENC_NA);
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offset += payload_len;
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}
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return offset;
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}
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void proto_register_bjnp (void)
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{
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static hf_register_info hf[] = {
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{ &hf_bjnp_id,
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{ "Id", "bjnp.id", FT_STRING, BASE_NONE,
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NULL, 0x0, NULL, HFILL } },
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{ &hf_dev_type,
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{ "Type", "bjnp.type", FT_UINT8, BASE_DEC,
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VALS(dev_type_vals), 0x0, NULL, HFILL } },
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{ &hf_cmd_code,
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{ "Code", "bjnp.code", FT_UINT8, BASE_DEC,
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VALS(cmd_code_vals), 0x0, NULL, HFILL } },
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{ &hf_seq_no,
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{ "Sequence Number", "bjnp.seq_no", FT_UINT32, BASE_DEC,
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NULL, 0x0, NULL, HFILL } },
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{ &hf_session_id,
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{ "Session Id", "bjnp.session_id", FT_UINT16, BASE_DEC,
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NULL, 0x0, NULL, HFILL } },
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{ &hf_payload_len,
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{ "Payload Length", "bjnp.payload_len", FT_UINT32, BASE_DEC,
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NULL, 0x0, NULL, HFILL } },
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{ &hf_payload,
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{ "Payload", "bjnp.payload", FT_BYTES, BASE_NONE,
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NULL, 0x0, NULL, HFILL } },
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};
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static gint *ett[] = {
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&ett_bjnp
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};
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proto_bjnp = proto_register_protocol (PNAME, PSNAME, PFNAME);
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bjnp_handle = new_register_dissector (PFNAME, dissect_bjnp, proto_bjnp);
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proto_register_field_array (proto_bjnp, 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 proto_reg_handoff_bjnp (void)
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{
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dissector_add_uint ("udp.port", BJNP_PORT1, bjnp_handle);
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dissector_add_uint ("udp.port", BJNP_PORT2, bjnp_handle);
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dissector_add_uint ("udp.port", BJNP_PORT3, bjnp_handle);
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dissector_add_uint ("udp.port", BJNP_PORT4, bjnp_handle);
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 2
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=2 tabstop=8 expandtab:
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* :indentSize=2:tabSize=8:noTabs=true:
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*/
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