epan/dissectors/packet-ecmp.c

   1 /* packet-ecmp.c
   2  *
   3  * Copyright 2014, James Lynch <lynch007@gmail.com>, Control Techniques
   4  * Copyright 2015, Luke Orehawa <lukeorehawa@gmail.com>, Control Techniques
   5  *
   6  * Revisions:
   7  * - James Lynch 2014-07-22
   8  *   - Initial plugin development
   9  * - Luke Orehawa 2015-11-26
  10  *       - Removed commands not yet in released specification
  11  *       - All commands implemented are as V0.26 of ECMP Specification
  12  *       - Modifications of code to meet Wireshark coding style and current APIs
  13  *
  14  * Wireshark - Network traffic analyzer
  15  * By Gerald Combs <gerald@wireshark.org>
  16  * Copyright 1998 Gerald Combs
  17  *
  18  * SPDX-License-Identifier: GPL-2.0-or-later
  19  */
  20
  21 #include "config.h"
  22 #include <glib.h>
  23 #include <epan/packet.h>
  24 #include <epan/expert.h>
  25 #include "packet-mbtcp.h"
  26
  27 #define PROTO_TAG_ECMP  "ECMP"
  28 #define ECMP_TCP_PORT   6160
  29
  30 void proto_reg_handoff_ecmp(void);
  31 void proto_register_ecmp (void);
  32
  33 /* Wireshark ID of the ECMP protocol */
  34 static int proto_ecmp = -1;
  35
  36 /* Used to set Modbus protocol data */
  37 static int proto_modbus = -1;
  38
  39 /* These are the handles of our subdissectors */
  40 static dissector_handle_t modbus_handle = NULL;
  41
  42 /*smallest size of a packet, number of bytes*/
  43 static const gint ecmp_min_packet_size  = 6;
  44
  45 /* ECMP request codes  */
  46 #define ECMP_COMMAND_IDENTIFY           0x00
  47 #define ECMP_COMMAND_INFO               0x01
  48 #define ECMP_COMMAND_INTERROGATE        0x02
  49 #define ECMP_COMMAND_READ               0x10
  50 #define ECMP_COMMAND_READWITHTYPE       0x11
  51 #define ECMP_COMMAND_WRITE              0x12
  52 #define ECMP_COMMAND_OBJECTINFO         0x13
  53 #define ECMP_COMMAND_GETNEXTOBJECTS     0x14
  54 #define ECMP_COMMAND_FILEOPEN           0x20
  55 #define ECMP_COMMAND_FILEREAD           0x21
  56 #define ECMP_COMMAND_FILEWRITE          0x22
  57 #define ECMP_COMMAND_FILECLOSE          0x23
  58 #define ECMP_COMMAND_FILEINFO           0x24
  59 #define ECMP_COMMAND_FILEDELETE         0x25
  60 #define ECMP_COMMAND_FILESTATE          0x26
  61 #define ECMP_COMMAND_FILEPOS            0x27
  62 #define ECMP_COMMAND_FILELIST           0x28
  63 #define ECMP_COMMAND_FILEEXISTS         0x2a
  64 #define ECMP_COMMAND_CYCLICLINK         0x31
  65 #define ECMP_COMMAND_PROGRAMCONTROL     0x60
  66 #define ECMP_COMMAND_PROGRAMSTATUS      0x61
  67 #define ECMP_COMMAND_CYCLICFRAME        0x70
  68 #define ECMP_COMMAND_TUNNELFRAME        0x73
  69 #define ECMP_COMMAND_MODBUSPDU          0x74
  70
  71 /* cyclic display formats */
  72 static const guint8 cyclic_display_byte_format = 0;
  73 static const guint8 cyclic_display_word_format = 1;
  74 static const guint8 cyclic_display_long_format = 2;
  75
  76 /* Addressing scheme Structure */
  77 static const value_string address_scheme [] = {
  78         { 0, "No Route" },
  79         { 1, "Intercept" },
  80         { 2, "Default Route" },
  81         { 3, "Diagnostics" },
  82         { 4, "Named" },
  83         { 0, NULL }
  84         /*other commands to be added */
  85 };
  86
  87 /* Address Structure */
  88 static const value_string diagnostic [] = {
  89         { 0, "Status" },
  90         { 1, "Alarm" },
  91         { 2, "Network" },
  92         { 3, "Application" },
  93         { 0, NULL }
  94         /*other commands to be added*/
  95 };
  96
  97 /* Command Structure*/
  98 static const value_string command_vals [] = {
  99         { 0x00, "Identify"},
 100         { 0x01, "Info"},
 101         { 0x02, "Interrogate"},
 102         { 0x10, "Read"},
 103         { 0x11, "ReadWithType"},
 104         { 0x12, "Write"},
 105         { 0x13, "ObjectInfo"},
 106         { 0x14, "GetNextObjects"},
 107         { 0x20, "FileOpen"},
 108         { 0x21, "FileRead"},
 109         { 0x22, "FileWrite"},
 110         { 0x23, "FileClose"},
 111         { 0x24, "FileInfo"},
 112         { 0x25, "FileDelete"},
 113         { 0x26, "FileState"},
 114         { 0x27, "FilePos"},
 115         { 0x28, "FileList"},
 116         { 0x2A, "FileExists"},
 117         { 0x31, "CyclicSetup"},
 118         { 0x60, "ProgramControl"},
 119         { 0x61, "ProgramStatus"},
 120         { 0x70, "CyclicFrame"},
 121         { 0x73, "TunnelFrame"},
 122         { 0x74, "ModbusPDU"},
 123         { 0, NULL }
 124         /*other commands to be added*/
 125 };
 126
 127 /* Command Structure for request/response */
 128 static const value_string type_rr [] = {
 129         { 0, "Request" },
 130         { 1, "Response" },
 131         { 0, NULL }
 132         /*other commands to be added*/
 133 };
 134
 135 /* Option Code structure*/
 136 static const value_string option_code [] = {
 137         { 0, "End of Options"},
 138         { 1, "Dummy" },
 139         { 2, "Process At" },
 140         { 3, "Route to Custom Target"},
 141         { 0, NULL }
 142         /* other - "Unknown" */
 143 };
 144
 145 /* Attribute type Structure */
 146 static const value_string attribute [] = {
 147         { 0, "Manufacturer Name" },
 148         { 1, "Product Family" },
 149         { 2, "Product Model" },
 150         { 3, "Serial Number" },
 151         { 4, "Order Number" },
 152         { 5, "Date Code" },
 153         { 6, "Device Name" },
 154         { 7, "Version Summary" },
 155         { 8, "Colour Codes" },
 156         { 0, NULL }
 157         /* other - Unknown*/
 158 };
 159
 160 /* Status type Structure */
 161 static const value_string status [] = {
 162         { 0, "OK (no errors detected in request)" },
 163         { 1, "OK, chunks follow" },
 164         { 2, "Processing Request" },
 165         { -1, "Error - Slave not ready" },
 166         { -2, "Error - Request Too Long" },
 167         { -3, "Error - Chunking Error" },
 168         { 0, NULL }
 169         /* other - Unknown*/
 170 };
 171
 172 /* Category (device) structure*/
 173 static const value_string category [] = {
 174         { 0, "Drive" },
 175         { 1, "Option Module" },
 176         { 0, NULL }
 177 };
 178
 179 /* Cyclic data alignment */
 180 static const value_string cyclic_align [] = {
 181         { 0, "8bit" },
 182         { 1, "8bit" },
 183         { 2, "16bit" },
 184         { 4, "32bit" },
 185         { 8, "64bit" },
 186         { 0, NULL }
 187 };
 188
 189 /* Cyclic data scheme */
 190 static const value_string cyclic_scheme [] = {
 191         { 0, "Standard" },
 192         { 1, "Synchronised" },
 193         { 0, NULL }
 194 };
 195
 196 /* Parameter addressing scheme */
 197 static const value_string parameter_address_scheme [] = {
 198         { 0, "Standard" },
 199         { 1, "Slot Specific" },
 200         { 3, "Variable" },
 201         { 0, NULL }
 202 };
 203
 204 #if 0
 205 static const value_string route_address_scheme [] = {
 206         { 1, "Intercept" },
 207         { 2, "DefaultRoute" },
 208         { 0, NULL }
 209 };
 210 #endif
 211
 212 /* Parameter access status */
 213 static const value_string parameter_access_status [] = {
 214         { 0, "OK" },
 215         { 1, "OK - Converted"},
 216         { 2, "OK - Clamped"},
 217         { -1, "ERROR - Address Type"},
 218         { -2, "ERROR - Timeout"},
 219         { -3, "ERROR - Access Denied"},
 220         { -4, "ERROR - Does not exist"},
 221         { -5, "ERROR - Data Type"},
 222         { -6, "ERROR - Failed Read"},
 223         { -7, "ERROR - Failed Write"},
 224         { -8, "ERROR - Not Readable"},
 225         { -9, "ERROR - Not Writeable"},
 226         { -10, "ERROR - Over Range"},
 227         { -11, "ERROR - Request Invalid"},
 228         { -12, "ERROR - Response Too Big"},
 229         { -13, "ERROR - Decimal Place"},
 230         { 0, NULL}
 231 };
 232
 233 /* Parameter data types */
 234 static const value_string parameter_data_types [] = {
 235         { 0, "Boolean"},
 236         { 1, "INT8"},
 237         { 2, "UINT8"},
 238         { 3, "INT16"},
 239         { 4, "UINT16"},
 240         { 5, "INT32"},
 241         { 6, "UINT32"},
 242         { 7, "INT64"},
 243         { 8, "UINT64"},
 244         { 9, "INT128"},
 245         { 10, "UINT128"},
 246         { 20, "SINGLE"},
 247         { 21, "DOUBLE"},
 248         { 30, "String ID"},
 249         { 31, "String"},
 250         { 0, NULL}
 251 };
 252
 253 /* Info types */
 254 static const value_string info_type [] = {
 255         { 0, "No Information"},
 256         { 1, "Lowest Numbered Parameter in Menu"},
 257         { 2, "Highest Numbered Parameter in Menu"},
 258         { 3, "Parameter Format"},
 259         { 4, "Minimum Value allowed for Parameter"},
 260         { 5, "Maximum Value allowed for Parameter"},
 261         { 6, "Object Unit Information"},
 262         { 7, "Data Type of Parameter"},
 263         { 0, NULL }
 264 };
 265
 266 /* Display formats */
 267 static const value_string display_format [] = {
 268         { 0, "Standard format"},
 269         { 1, "Date format (xx,yy,zz)"},
 270         { 2, "Time with seconds format (xx.yy.zz)"},
 271         { 3, "Character format"},
 272         { 4, "Binary format"},
 273         { 5, "IP address format (www.xxx.yyy.zzz)"},
 274         { 6, "MAC address format (AA:BB:CC:DD:EE:FF)"},
 275         { 7, "Version number (ww.xx.yy.zz)"},
 276         { 8, "Slot menu parameter format (x,yy,zzz)"},
 277         { 0, NULL}
 278 };
 279
 280 /* Format units */
 281 static const value_string format_units [] = {
 282         { 0, "No units"},
 283         { 1, "Custom units"},
 284         { 2, "Millimetres (mm)"},
 285         { 3, "Metres (m)"},
 286         { 4, "User units (UU)"},
 287         { 5, "Revolutions (revs)"},
 288         { 6, "Degrees (')"},
 289 /*      { 7, ""}, */
 290         { 8, "General position unit"},
 291         { 9, "Millimetres per second (mm/s)"},
 292         { 10, "User units per millisecond (UU/ms)"},
 293         { 11, "Revolutions per minute (Rpm)"},
 294         { 12, "Hertz (Hz)"},
 295         { 13, "Kilohertz (kHz)"},
 296         { 14, "Megahertz (MHz)"},
 297         { 15, "General speed unit (Hz, rpm, mm/s)"},
 298         { 16, "Closed loop speed unit (rpm, mm/s)"},
 299         { 17, "Seconds per one thousand millimetres per seconds (s/m/s)"},
 300         { 18, "User units per millimetre per second (UU/mm/s)"},
 301         { 19, "Seconds per one thousand revolution per minute (s/1000rpm)"},
 302         { 20, "Seconds per one hundred hertz (s/100Hz)"},
 303         { 21, "General acceleration unit"},
 304         { 22, "Closed loop acceleration unit"},
 305         { 23, "Seconds squared per one thousand millimetres per second (s^2/1000ms/s)"},
 306         { 24, "Seconds squared per user units per millisecond (s^2/UU/ms"},
 307         { 25, "Seconds squared per one thousand revolutions per minute (s^2/1000rpm)"},
 308         { 26, "Seconds squared per one hundred hertz (s^2/100Hz)"},
 309         { 27, "General jerk unit"},
 310         { 28, "Closed loop jerk unit"},
 311         { 29, "Messages per second (Msg/s)"},
 312         { 30, "Hours (Hours)"},
 313         { 31, "Minutes (Mins)"},
 314         { 32, "Seconds (s)"},
 315         { 33, "Milliseconds (ms)"},
 316         { 34, "Microseconds (us)"},
 317         { 35, "Nanoseconds (ns)"},
 318         { 36, "Volts (V)"},
 319         { 37, "Amperes (A)"},
 320         { 38, "Ohms (Ohms)"},
 321         { 39, "Millihenrys (mH)"},
 322         { 40, "Kilowatts (kW)"},
 323         { 41, "Kilo-Volt-Amps-Reactive (kVAr)"},
 324         { 42, "Megawatt hours (MWh)"},
 325         { 43, "Kilowatt hours (kWh)"},
 326         { 44, "Degrees Celcius ('C)"},
 327         { 45, "Reciprocal of degrees celcius (/'C)"},
 328         { 46, "Kilogram-metres squared (kgm^2)"},
 329         { 47, "Newton metres (Nm)"},
 330         { 48, "Newton metres per ampere (Nm/A)"},
 331         { 49, "open-circuit volts per 1000rpm (V/1000rpm)"},
 332         { 50, "Bits (Bits)"},
 333         { 51, "Bytes (Bytes)"},
 334         { 52, "Kilobytes (kB)"},
 335         { 53, "Megabytes (MB)"},
 336         { 54, "Bits per second (Bit/s)"},
 337         { 55, "Baud (Baud)"},
 338         { 56, "Kilobaud (kBaud)"},
 339         { 57, "Megabaud (MBaud)"},
 340         { 58, "Poles (Poles)"},
 341         { 59, "Percent (%)"},
 342         { 60, "Volts per millisecond (V/ms)"},
 343         { 0, NULL}
 344 };
 345
 346 /* File status */
 347 static const value_string file_status [] = {
 348         { 0, "Processing"},
 349         { 1, "OK"},
 350         { 2, "OK - More Data"},
 351         { 3, "OK - EOF"},
 352         { -1, "ERROR - File Handle"},
 353         { -2, "ERROR - Blocked"},
 354         { -3, "ERROR - Blocking Mode"},
 355         { -4, "ERROR - Not in Progress"},
 356         { -5, "ERROR - Not Found"},
 357         { -6, "ERROR - Read Only"},
 358         { -7, "ERROR - Write Only"},
 359         { -8, "ERROR - Not Created"},
 360         { -9, "ERROR - No Data"},
 361         { -10, "ERROR - Wrong Mode"},
 362         { -11, "ERROR - Too Big"},
 363         { -12, "ERROR - Protected"},
 364         { -13, "ERROR - CRC"},
 365         { -14, "ERROR - Length"},
 366         { -15, "ERROR - Too Many Open"},
 367         { -16, "ERROR - Invalid File"},
 368         { -17, "ERROR - Invalid Request"},
 369         { -18, "ERROR - No Append"},
 370         { -19, "ERROR - Invalid State"},
 371         { -20, "ERROR - Incompatible"},
 372         { -21, "ERROR - Uninitialized"},
 373         { 0, NULL}
 374 };
 375
 376 /* File status mode */
 377 static const value_string file_status_mode [] = {
 378         { 0, "Information"},
 379         { 1, "Read"},
 380         { 2, "Create"},
 381         { 3, "Append"},
 382         { 4, "New Directory"},
 383         { 0, NULL}
 384 };
 385
 386 /* File attributes */
 387 static const value_string file_attributes [] = {
 388         { 0, "File Length"},
 389         { 1, "File Integrity"},
 390         { 2, "Calculate CRC32"},
 391         { 3, "File Attributes"},
 392         { 4, "Creation Date and Time"},
 393         { 5, "Modification Date and Time"},
 394         { 0, NULL}
 395 };
 396
 397 /* File reference position */
 398 static const value_string file_ref_point [] = {
 399         { 0, "SoF - Start of file"},
 400         { 1, "EoF - End of file"},
 401         { 2, "Current - Use current file pointer"},
 402         { 0, NULL}
 403 };
 404
 405 static const value_string cyclic_setup_mode [] = {
 406         { 0, "Create"},
 407         { 1, "Edit"},
 408         { 2, "Finalise"},
 409         { 3, "Delete"},
 410         { 4, "Exist"},
 411         { 5, "List"},
 412         { 6, "Info"},
 413         { 10, "Set"},
 414         { 11, "Get"},
 415         { 12, "Get mappings"},
 416         { 0, NULL}
 417 };
 418
 419 static const value_string cyclic_attributes [] = {
 420         { 0, "State"},
 421         { 1, "Rx/Tx"},
 422         { 2, "Synchronised"},
 423         { 3, "MEC Offset"},
 424         { 4, "Sample Period"},
 425         { 5, "MEC Delay"},
 426         { 6, "Data Change"},
 427         { 7, "Rx Timeout Handler"},
 428         { 8, "Rx Data Late Handler"},
 429         { 9, "Transport Address"},
 430         { 10, "Max Mappings"},
 431         { 11, "Number Of Mappings"},
 432         { 12, "Mapping Item"},
 433         { 13, "Saveable"},
 434         { 128, "Max RX Links"},
 435         { 129, "Max TX Links"},
 436         { 130, "Max Mappings Per Link"},
 437         { 131, "Max Sync RX Links"},
 438         { 132, "Max Sync TX Links"},
 439         { 133, "Max Mappings Per Sync Link"},
 440         { 134, "'Process At' Queue Depth"},
 441         { 135, "MEC Period"},
 442         { 0, NULL}
 443 };
 444
 445 static const value_string cyclic_setup_link_dir [] = {
 446         { 0, "Rx"},
 447         { 1, "Tx"},
 448         { 0, NULL}
 449 };
 450
 451 static const value_string cyclic_setup_link_exists [] = {
 452         { 0, "Does not exist"},
 453         { 1, "Exists"},
 454         { 0, NULL}
 455 };
 456
 457 static const value_string cyclic_link_req_resp [] = {
 458         { 0, "Request"},
 459         { 1, "Response"},
 460         { 0, NULL}
 461 };
 462
 463 static const value_string additional_scheme_vals [] = {
 464         { 0, "None"},
 465         { 1, "Generic"},
 466         { 0, NULL}
 467 };
 468
 469 /* Program Control - command codes  */
 470 static const value_string command_code_list [] = {
 471         { 0, "Stop"},
 472         { 1, "Start"},
 473         { 2, "Reset"},
 474         { 0, NULL }
 475         /*other commands to be added*/
 476 };
 477
 478 /* Program Control - sub command codes  */
 479 static const value_string sub_command_code_list [] = {
 480         { 0, "Default"},
 481         { 1, "User1"},
 482         { 2, "User2"},
 483         { 0, NULL }
 484         /*other sub commands to be added*/
 485 };
 486
 487 /* Program Control - status codes  */
 488 static const value_string status_list [] = {
 489         { 0,   "OK"},
 490         { -1,  "Error"},
 491         { 0,   NULL }
 492         /*other status to be added*/
 493 };
 494
 495         /* Program Status - running state codes  */
 496 static const value_string running_state_list [] = {
 497         { 0,   "Stopped"},
 498         { 1,   "Running"},
 499         { 2,   "Exception"},
 500         { 3,   "None (no program found in device)"},
 501         { 0,   NULL }
 502         /*other status to be added*/
 503 };
 504
 505         /* Interrogate - command support states  */
 506 static const value_string Interrogate_support_state [] = {
 507         { 0,  "Not Supported"},
 508         { 1,  "Supported"},
 509         { 0,   NULL }
 510         /*other status to be added*/
 511 };
 512
 513         /* Interrogate - command / option states  */
 514 static const value_string Interrogate_command_option_state [] = {
 515         { 0,  "Command"},
 516         { 1,  "Option"},
 517         { 0,   NULL }
 518         /*other status to be added*/
 519 };
 520
 521 static const value_string item_type_vals[] = {
 522         { 0,  "File"},
 523         { 1,  "Directory"},
 524         { 0,   NULL }
 525 };
 526
 527 static const value_string file_integrity_vals[] = {
 528         { 0,  "Error"},
 529         { 1,  "OK"},
 530         { 0,   NULL }
 531 };
 532
 533 #if 0
 534 static const true_false_string tfs_not_expected_expected = { "Odd", "Even" };
 535 #endif
 536
 537 /* The following hf_* variables are used to hold the Wireshark IDs of
 538 * our header fields; they are filled out when we call
 539 * proto_register_field_array() in proto_register_ecmp()
 540 */
 541 static gint hf_ecmp_command = -1;
 542 static gint hf_ecmp_destination_address = -1;
 543 static gint hf_ecmp_source_address = -1;
 544 static gint hf_ecmp_diagnostic = -1;
 545 static gint hf_ecmp_type_rr = -1;
 546 static gint hf_ecmp_chunking = -1;
 547 static gint hf_ecmp_max_response_size = -1;
 548 static gint hf_ecmp_category = -1;
 549 static gint hf_ecmp_option = -1;
 550 static gint hf_ecmp_attribute = -1;
 551 static gint hf_ecmp_no_of_attributes = -1;
 552 static gint hf_ecmp_chunk_id = -1;
 553 static gint hf_ecmp_transaction_id = -1;
 554 static gint hf_ecmp_status = -1;
 555 static gint hf_ecmp_drive_type = -1;
 556 static gint hf_ecmp_drive_derivative = -1;
 557 static gint hf_ecmp_drive_factory_fit_category_id = -1;
 558 static gint hf_ecmp_category_id = -1;
 559 static gint hf_ecmp_attribute_string = -1;
 560 static gint hf_ecmp_file_name = -1;
 561 static gint hf_ecmp_info_command = -1;
 562 static gint hf_ecmp_directory = -1;
 563 static gint hf_ecmp_names_scheme = -1;
 564 static gint hf_ecmp_variable_name = -1;
 565 static gint hf_ecmp_unit_id_string = -1;
 566 static gint hf_ecmp_ecmp_string = -1;
 567 static gint hf_ecmp_process_time = -1;
 568 static gint hf_ecmp_cyclic_frame_time = -1;
 569 static gint hf_ecmp_grandmaster = -1;
 570 static gint hf_ecmp_data = -1;
 571 static gint hf_ecmp_response_data = -1;
 572
 573 static gint hf_ecmp_cyclic_link_num = -1;
 574 static gint hf_ecmp_cyclic_align = -1;
 575 static gint hf_ecmp_cyclic_scheme = -1;
 576 static gint hf_ecmp_cyclic_link_number_display = -1;
 577
 578 /* Cyclic setup */
 579 static gint hf_ecmp_cyclic_setup_mode = -1;
 580 static gint hf_ecmp_cyclic_setup_linkno = -1;
 581 static gint hf_ecmp_cyclic_setup_dir = -1;
 582 static gint hf_ecmp_cyclic_setup_attrib_count = -1;
 583 static gint hf_ecmp_cyclic_setup_rsp_status = -1;
 584 static gint hf_ecmp_cyclic_setup_rsp_err_idx = -1;
 585 static gint hf_ecmp_cyclic_setup_attrib = -1;
 586 static gint hf_ecmp_cyclic_setup_link_exists = -1;
 587 static gint hf_ecmp_cyclic_link_req_resp = -1;
 588
 589 /*for info command */
 590 static gint hf_ecmp_buffer_size = -1;
 591 static gint hf_ecmp_max_response = -1;
 592 static gint hf_ecmp_max_handle = -1;
 593 static gint hf_ecmp_info_address = -1;
 594
 595 /*for parameter access commands*/
 596 static gint hf_ecmp_parameter_address = -1;
 597 static gint hf_ecmp_number_of_parameter_definitions = -1;
 598 static gint hf_ecmp_number_of_parameter_responses = -1;
 599 static gint hf_ecmp_parameter_status = -1;
 600 static gint hf_ecmp_data_type = -1;
 601 static gint hf_ecmp_info_type = -1;
 602
 603 /* for file access commands */
 604 static gint hf_ecmp_file_status = -1;
 605 static gint hf_ecmp_file_handle = -1;
 606 static gint hf_ecmp_file_attributes = -1;
 607 static gint hf_ecmp_file_ref_point = -1;
 608
 609
 610 /* for tunnel frame command */
 611 #define TUNNEL_START_FLAG               0x01
 612 #define TUNNEL_END_FLAG                 0x02
 613 #define TUNNEL_CHECK_OUTPUT_FLAG        0x04
 614
 615 static gint hf_ecmp_tunnel_control = -1;
 616 static gint hf_ecmp_tunnel_start_flag = -1;
 617 static gint hf_ecmp_tunnel_end_flag = -1;
 618 static gint hf_ecmp_tunnel_check_output_flag = -1;
 619 static gint hf_ecmp_tunnel_size = -1;
 620
 621 /* Generated from convert_proto_tree_add_text.pl */
 622 static int hf_ecmp_physical_address = -1;
 623 static int hf_ecmp_logical_address = -1;
 624 static int hf_ecmp_primary_colour = -1;
 625 static int hf_ecmp_secondary_colour = -1;
 626 static int hf_ecmp_number_of_subsequent_object_requests = -1;
 627 static int hf_ecmp_number_of_decimal_places = -1;
 628 static int hf_ecmp_no_information_available = -1;
 629 static int hf_ecmp_param_format_bit_default_unipolar = -1;
 630 static int hf_ecmp_param_format_write_allowed = -1;
 631 static int hf_ecmp_param_format_read_not_allowed = -1;
 632 static int hf_ecmp_param_format_protected_from_destinations = -1;
 633 static int hf_ecmp_param_format_parameter_not_visible = -1;
 634 static int hf_ecmp_param_format_not_clonable = -1;
 635 static int hf_ecmp_param_format_voltage_or_current_rating_dependent = -1;
 636 static int hf_ecmp_param_format_parameter_has_no_default = -1;
 637 static int hf_ecmp_param_format_number_of_decimal_places = -1;
 638 static int hf_ecmp_param_format_variable_maximum_and_minimum = -1;
 639 static int hf_ecmp_param_format_string_parameter = -1;
 640 static int hf_ecmp_param_format_desitination_set_up_parameter = -1;
 641 static int hf_ecmp_param_format_filtered_when_displayed = -1;
 642 static int hf_ecmp_param_format_pseudo_read_only = -1;
 643 static int hf_ecmp_param_format_display_format = -1;
 644 static int hf_ecmp_param_format_floating_point_value = -1;
 645 static int hf_ecmp_param_format_units = -1;
 646 static int hf_ecmp_string_id = -1;
 647 static int hf_ecmp_address_scheme_menu = -1;
 648 static int hf_ecmp_address_scheme_parameter = -1;
 649 static int hf_ecmp_address_scheme_slot = -1;
 650 static int hf_ecmp_address_scheme_null_byte_size = -1;
 651 static int hf_ecmp_display_unit_id = -1;
 652 static int hf_ecmp_data_boolean = -1;
 653 static int hf_ecmp_data_int8 = -1;
 654 static int hf_ecmp_data_uint8 = -1;
 655 static int hf_ecmp_data_int16 = -1;
 656 static int hf_ecmp_data_uint16 = -1;
 657 static int hf_ecmp_data_int32 = -1;
 658 static int hf_ecmp_data_uint32 = -1;
 659 static int hf_ecmp_data_int64 = -1;
 660 static int hf_ecmp_data_uint64 = -1;
 661 static int hf_ecmp_data_float = -1;
 662 static int hf_ecmp_data_double = -1;
 663 static int hf_ecmp_access_mode = -1;
 664 static int hf_ecmp_open_in_non_blocking_mode = -1;
 665 static int hf_ecmp_open_file_relative_to_specified_directory_handle = -1;
 666 static int hf_ecmp_file_access_mode = -1;
 667 static int hf_ecmp_additional_scheme = -1;
 668 static int hf_ecmp_scheme_data_length = -1;
 669 static int hf_ecmp_number_of_requested_bytes = -1;
 670 static int hf_ecmp_number_of_bytes_transferred = -1;
 671 static int hf_ecmp_crc = -1;
 672 static int hf_ecmp_ref_offset = -1;
 673 static int hf_ecmp_number_of_files_to_list = -1;
 674 static int hf_ecmp_file_hash = -1;
 675 static int hf_ecmp_item_type = -1;
 676 static int hf_ecmp_file_integrity = -1;
 677 static int hf_ecmp_display_attr_read_only = -1;
 678 static int hf_ecmp_display_attr_hidden = -1;
 679 static int hf_ecmp_display_attr_system = -1;
 680 static int hf_ecmp_display_attr_volume_label = -1;
 681 static int hf_ecmp_display_attr_subdirectory = -1;
 682 static int hf_ecmp_display_attr_archive = -1;
 683 static int hf_ecmp_display_creation = -1;
 684 static int hf_ecmp_display_modification = -1;
 685 static int hf_ecmp_interrogate_item_type = -1;
 686 static int hf_ecmp_interrogate_count = -1;
 687 static int hf_ecmp_modbus_pdu_size = -1;
 688 /* static int hf_ecmp_destination_scheme = -1; */
 689 static int hf_ecmp_program_control_target = -1;
 690 static int hf_ecmp_program_control_command = -1;
 691 static int hf_ecmp_program_control_sub_command = -1;
 692 static int hf_ecmp_program_control_status = -1;
 693 static int hf_ecmp_program_status_target = -1;
 694 static int hf_ecmp_program_status_status = -1;
 695 static int hf_ecmp_program_status_additional_items = -1;
 696 static int hf_ecmp_cyclic_setup_max_mappings = -1;
 697 static int hf_ecmp_cyclic_setup_start_offset = -1;
 698 static int hf_ecmp_cyclic_setup_tx_count = -1;
 699 static int hf_ecmp_cyclic_setup_rx_count = -1;
 700 static int hf_ecmp_udp_alignment = -1;
 701 static int hf_ecmp_udp_scheme = -1;
 702 static int hf_ecmp_cyclic_data = -1;
 703 static int hf_ecmp_version_summary = -1;
 704 static int hf_ecmp_min_param_menu = -1;
 705 static int hf_ecmp_max_param_menu = -1;
 706 static int hf_ecmp_file_length = -1;
 707 static int hf_ecmp_mec_offset = -1;
 708 static int hf_ecmp_sample_period = -1;
 709 static int hf_ecmp_rx_timeout = -1;
 710 static int hf_ecmp_rx_action = -1;
 711 static int hf_ecmp_rx_event_destination = -1;
 712 static int hf_ecmp_rx_event = -1;
 713 static int hf_ecmp_rx_late_handler_action = -1;
 714 static int hf_ecmp_rx_late_handler_event_destination = -1;
 715 static int hf_ecmp_rx_late_handler_event = -1;
 716 static int hf_ecmp_transport_addr_scheme = -1;
 717 static int hf_ecmp_transport_addr = -1;
 718 static int hf_ecmp_mapping_item_offset = -1;
 719 static int hf_ecmp_mapping_item_scheme = -1;
 720 static int hf_ecmp_setup_attribute = -1;
 721 static int hf_ecmp_mec_period = -1;
 722 static int hf_ecmp_interrogate_command = -1;
 723 /************************************************************/
 724
 725 /* These are the ids of the subtrees that we may be creating */
 726
 727 static gint ett_ecmp = -1;
 728 static gint ett_ecmp_address= -1;
 729 static gint ett_ecmp_response_size = -1;
 730 static gint ett_ecmp_command = -1;
 731 static gint ett_ecmp_category = -1;
 732 static gint ett_ecmp_option = -1;
 733 static gint ett_ecmp_option_data = -1;
 734 static gint ett_ecmp_attribute = -1;
 735 static gint ett_ecmp_attribute_data = -1;
 736 static gint ett_ecmp_cyclic_scheme = -1;
 737 static gint ett_ecmp_info_type = -1;
 738 static gint ett_ecmp_info_count = -1;
 739 static gint ett_ecmp_interrogate_message = -1;
 740 static gint ett_ecmp_param_address = -1;
 741 static gint ett_ecmp_access_mode = -1;
 742 static gint ett_ecmp_access_file = -1;
 743 static gint ett_ecmp_file_read = -1;
 744 static gint ett_ecmp_file_write = -1;
 745 static gint ett_ecmp_file_info = -1;
 746 static gint ett_ecmp_file_info_att = -1;
 747 static gint ett_ecmp_file_position = -1;
 748 static gint ett_ecmp_file_list_no = -1;
 749 static gint ett_ecmp_file_list = -1;
 750 static gint ett_ecmp_tunnel_3s_goodframe = -1;
 751 static gint ett_ecmp_tunnel_3s_size = -1;
 752 static gint ett_ecmp_tunnel_3s_service = -1;
 753 static gint ett_cyclic_setup_attribs = -1;
 754 static gint ett_cyclic_setup_attrib_item = -1;
 755 static gint ett_cyclic_setup_transport_addr = -1;
 756 static gint ett_ecmp_cyclic_data_32_bit_display = -1;
 757 static gint ett_ecmp_cyclic_data_16_bit_display = -1;
 758 static gint ett_ecmp_cyclic_data_8_bit_display = -1;
 759 static gint ett_ecmp_modbus_pdu_message = -1;
 760 static gint ett_ecmp_program_control_message = -1;
 761 static gint ett_ecmp_program_status_message = -1;
 762 static expert_field ei_ecmp_unknown_command = EI_INIT;
 763 static expert_field ei_ecmp_color = EI_INIT;
 764 static expert_field ei_ecmp_option = EI_INIT;
 765 static expert_field ei_ecmp_item_type = EI_INIT;
 766 static expert_field ei_ecmp_options_not_implemented = EI_INIT;
 767 static expert_field ei_ecmp_info_type = EI_INIT;
 768 static expert_field ei_ecmp_attribute_type = EI_INIT;
 769 static expert_field ei_ecmp_parameter_addressing_scheme = EI_INIT;
 770 static expert_field ei_ecmp_data_type = EI_INIT;
 771
 772
 773 /*--------------------------------------------------------------------*/
 774 /* General Commands and Framing Dissectors                            */
 775 /*--------------------------------------------------------------------*/
 776 /*a function to add the initial information about the transport layer (the first bits)*/
 777 static int add_transport_layer_frame(int offset, tvbuff_t *tvb, proto_tree* ecmp_tree, int addr_type)
 778 {
 779         proto_item *ecmp_address_item = NULL;
 780         proto_tree *ecmp_address_tree = NULL;
 781         guint8 byte_test;
 782
 783         ecmp_address_item = proto_tree_add_item(ecmp_tree, addr_type, tvb, offset, 1, ENC_BIG_ENDIAN);
 784
 785         byte_test = tvb_get_guint8(tvb, offset);
 786         if ((byte_test != 0) && (byte_test != 1)) {
 787                 /* tree to display the data in the address*/
 788                 ecmp_address_tree = proto_item_add_subtree(ecmp_address_item, ett_ecmp_address);
 789
 790                 switch (byte_test)
 791                 {
 792                 case 2: /*  default route scheme*/
 793                         offset++;
 794
 795                         /* displays the values of the addresses*/
 796                         proto_tree_add_item(ecmp_address_tree, hf_ecmp_physical_address, tvb, offset, 1, ENC_NA);
 797                         proto_tree_add_item(ecmp_address_tree, hf_ecmp_logical_address, tvb, offset, 1, ENC_NA);
 798                         break;
 799
 800                 case 3:/*  diagnostic scheme*/
 801                         proto_tree_add_item(ecmp_address_tree, hf_ecmp_diagnostic, tvb, offset, 1, ENC_BIG_ENDIAN);
 802                         offset++;
 803                         break;
 804                 case 4: /* Names scheme */
 805                         /* Calls a function to display the UTF-8 string data*/
 806                         proto_tree_add_item(ecmp_address_tree, hf_ecmp_names_scheme, tvb, offset, 2, ENC_BIG_ENDIAN|ENC_ASCII);
 807                         offset += (tvb_get_ntohs(tvb, offset) + 2);
 808                         break;
 809                 }
 810         }
 811         offset++;
 812
 813         return offset;
 814 }
 815
 816
 817 /* a function to display option codes */
 818 static int add_option_codes(int offset, packet_info *pinfo, tvbuff_t *tvb, proto_tree* ecmp_tree)
 819 {
 820         proto_item* ecmp_option_number_item = NULL;
 821         proto_item* ecmp_option_item;
 822         proto_tree* ecmp_option_tree;
 823         proto_tree* ecmp_option_data_tree = NULL;
 824         guint8 option_code_display = 0;
 825         guint16 count = 0; /* number of times the loop iterates*/
 826         int start_offset;
 827         gboolean more_options = TRUE;
 828
 829         offset++;
 830
 831         start_offset = offset;
 832         ecmp_option_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 1, ett_ecmp_option, &ecmp_option_number_item, "Options" );
 833
 834         /* Loop to display all options */
 835         while(more_options) /* loops until option code is 0*/
 836         {
 837                 option_code_display = tvb_get_guint8(tvb, offset);
 838                 ecmp_option_item = proto_tree_add_item(ecmp_option_tree, hf_ecmp_option, tvb, offset, 1, ENC_BIG_ENDIAN);
 839                 offset++;
 840                 switch(option_code_display)
 841                 {
 842                 case 0:/* end of options*/
 843                         proto_item_append_text(ecmp_option_number_item, ": %d", count);
 844                         proto_item_set_len(ecmp_option_number_item, offset-start_offset);
 845                         more_options = FALSE;
 846                         break;
 847                 case 1:/* dummy - 0 bytes of data */
 848                         break;
 849                 case 2:/* process at - 8 bytes of data */
 850                         ecmp_option_data_tree = proto_item_add_subtree(ecmp_option_item, ett_ecmp_option_data);
 851
 852                         proto_tree_add_item(ecmp_option_data_tree, hf_ecmp_process_time, tvb, offset, 8, ENC_BIG_ENDIAN);
 853                         offset += 8;
 854                         break;
 855                 default: /* Option that is not recognised*/
 856                         proto_item_append_text(ecmp_option_number_item, "%d ", count);
 857                         expert_add_info(pinfo, ecmp_option_number_item, &ei_ecmp_option);
 858                         break;
 859                 }
 860                 count++;
 861         }
 862         return offset;
 863 }
 864
 865
 866 /* a function to display attributes */
 867 static void add_attributes(packet_info* pinfo, int offset, tvbuff_t *tvb, proto_tree* ecmp_tree, gboolean request)
 868 {
 869         proto_item* ecmp_attribute_number_item = NULL;
 870         proto_item* ecmp_attribute_item = NULL, *color_item;
 871         proto_tree* ecmp_attribute_tree = NULL;
 872         proto_tree* ecmp_attribute_data_tree = NULL;
 873         guint8 no_of_attributes = 0;
 874         guint8 a = 0; /*values used for looping*/
 875         guint8 b = 0;
 876         guint8 c = 0;
 877         guint8 check = 0;
 878         guint16 att_length = 0;
 879         guint32 color;
 880         gchar* pStr = NULL; /*char array for version string output*/
 881         int start_offset = offset;
 882
 883         /*display the number of attributes*/
 884         ecmp_attribute_number_item = proto_tree_add_item(ecmp_tree, hf_ecmp_no_of_attributes, tvb, offset, 1, ENC_BIG_ENDIAN);
 885         ecmp_attribute_tree = proto_item_add_subtree(ecmp_attribute_number_item, ett_ecmp_attribute);
 886
 887         no_of_attributes = tvb_get_guint8(tvb, offset);
 888         offset++;
 889
 890         for (a = 0; a < no_of_attributes; a++, offset++) {
 891                 /*attribute header*/
 892                 ecmp_attribute_item = proto_tree_add_item(ecmp_attribute_tree, hf_ecmp_attribute, tvb, offset, 1, ENC_BIG_ENDIAN );
 893                 ecmp_attribute_data_tree = proto_item_add_subtree(ecmp_attribute_item, ett_ecmp_attribute_data);
 894
 895                 if (!request) {
 896                         /*code for dissecting the colour codes attribute*/
 897                         switch(tvb_get_guint8(tvb, offset))
 898                         {
 899                         case 8:
 900                                 offset+= 1;
 901                                 /*get length of attribute for error checking*/
 902                                 offset+= 2;
 903
 904                                 /*output primary colour codes- the two bytes representing each colour are output as integers*/
 905                                 color = tvb_get_ntohl(tvb, offset);
 906                                 color_item = proto_tree_add_uint_format_value(ecmp_attribute_data_tree, hf_ecmp_primary_colour, tvb, offset, 4, color, "(red) %d (green) %d (blue) %d", tvb_get_guint8(tvb, offset+1), tvb_get_guint8(tvb, offset+2), tvb_get_guint8(tvb, offset+3));
 907                                 if ((color & 0xFF000000) != 0) {
 908                                         /*error check for correct colour code format */
 909                                         expert_add_info(pinfo, color_item, &ei_ecmp_color);
 910                                 }
 911                                 offset+= 4;
 912
 913                                 /*output secondary colour codes- the two bytes representing each colour are output as integers*/
 914                                 color = tvb_get_ntohl(tvb, offset);
 915                                 color_item = proto_tree_add_uint_format_value(ecmp_attribute_data_tree, hf_ecmp_secondary_colour, tvb, offset, 4, color, "(red) %d (green) %d (blue) %d", tvb_get_guint8(tvb, offset+1), tvb_get_guint8(tvb, offset+2), tvb_get_guint8(tvb, offset+3));
 916                                 if ((color & 0xFF000000) != 0) {
 917                                         /*error check for correct colour code format */
 918                                         expert_add_info(pinfo, color_item, &ei_ecmp_color);
 919                                 }
 920                                 offset+= 4;
 921                                 break;
 922                         /*code for dissecting the version summary attribute*/
 923                         case 7:
 924                                 offset++;
 925                                 att_length = tvb_get_ntohs(tvb, offset);
 926                                 pStr = (gchar *)wmem_alloc(wmem_packet_scope(), att_length+1); /* 100 char buffer */
 927                                 b = 0;
 928                                 offset+= 2;
 929                                 if (pStr != NULL) {
 930                                         for (c = 0; c < att_length; c++, offset++) {
 931                                                 check = tvb_get_guint8(tvb,offset);
 932                                                 if((check == 'V')||(check == '#')||(check == '@')) {
 933                                                         pStr[b] = ' ';
 934                                                         b++;
 935                                                 } else if(tvb_get_guint8(tvb,offset)== (';')) {
 936                                                         pStr[b] = 0;
 937                                                         /*display version summary parameter, e.g 'FW', 'BL', 'HW'*/
 938                                                         proto_tree_add_string(ecmp_attribute_data_tree, hf_ecmp_version_summary, tvb, offset-b, b, pStr);
 939                                                         b = 0;
 940                                                 } else {
 941                                                         pStr[b] = (gchar)tvb_get_guint8(tvb,offset);
 942                                                         b++;
 943                                                 }
 944                                         }
 945                                         pStr[b] = 0;
 946                                         /*display last version summary parameter, e.g 'FW', 'BL', 'HW' as no deliminator to check for, just prints out rest of version string*/
 947                                         proto_tree_add_string(ecmp_attribute_data_tree, hf_ecmp_version_summary, tvb, offset-b, b, pStr);
 948                                         offset-= 1;
 949                                 }
 950                                 break;
 951                         default:
 952                                 /* displays the data inside the attribute*/
 953                                 proto_tree_add_item(ecmp_attribute_data_tree, hf_ecmp_attribute_string, tvb, offset+1, 2, ENC_BIG_ENDIAN|ENC_ASCII);
 954                                 offset += (tvb_get_ntohs(tvb, offset+1) + 2);
 955                                 break;
 956                         }
 957                 }
 958         }
 959
 960         proto_item_set_len(ecmp_attribute_number_item, offset-start_offset);
 961 }
 962
 963
 964 /* a function to display the category codes */
 965 static int add_category_codes(int offset, tvbuff_t *tvb, proto_tree* ecmp_tree)
 966 {
 967         proto_item *ecmp_category_item = NULL;
 968         proto_tree *ecmp_category_tree = NULL;
 969         guint8 category_size = 0;
 970         int start_offset = offset;
 971         guint8 category_value = tvb_get_guint8(tvb, offset);
 972
 973         /* displays the category and creates a tree to display further data*/
 974         ecmp_category_item = proto_tree_add_item(ecmp_tree, hf_ecmp_category, tvb, offset, 1, ENC_BIG_ENDIAN);
 975         ecmp_category_tree = proto_item_add_subtree(ecmp_category_item, ett_ecmp_category);
 976         offset++;
 977
 978         category_size = tvb_get_guint8(tvb, offset);
 979         offset++;
 980
 981         if(category_size==2 && category_value == 1) {
 982                 /*display "option module" and its ID*/
 983                 proto_tree_add_item(ecmp_category_tree, hf_ecmp_category_id, tvb, offset, 2, ENC_BIG_ENDIAN);
 984                 offset+=category_size;
 985         } else if(category_size == 4 && category_value == 0) {
 986                 /*display "drive" and its data (product type, drive derivative and ID*/
 987                 proto_tree_add_item(ecmp_category_tree, hf_ecmp_drive_type, tvb, offset, 1, ENC_BIG_ENDIAN);
 988                 proto_tree_add_item(ecmp_category_tree, hf_ecmp_drive_derivative, tvb, offset+1, 1, ENC_BIG_ENDIAN);
 989                 proto_tree_add_item(ecmp_category_tree, hf_ecmp_drive_factory_fit_category_id, tvb, offset+2, 2, ENC_BIG_ENDIAN);
 990                 offset+=category_size;
 991
 992         } else {
 993                 /* Display unknown and its hex data */
 994                 proto_tree_add_item(ecmp_category_tree, hf_ecmp_data, tvb, offset, category_size, ENC_NA);
 995                 offset += category_size;
 996         }
 997
 998         proto_item_set_len(ecmp_category_item, offset-start_offset);
 999         return offset;
1000 }
1001
1002
1003 /* a function to display response size data */
1004 static int get_response_size(int offset, tvbuff_t *tvb, proto_tree* ecmp_tree)
1005 {
1006         proto_item* ecmp_max_response_item = NULL;
1007         proto_tree* ecmp_response_size_tree = NULL;
1008         guint8 chunks = 0;
1009         guint16 max_response_size = 0;
1010
1011         /*get values for number of chunks and max response size*/
1012         chunks = tvb_get_guint8(tvb, offset)>>4&0x0F;
1013         max_response_size = tvb_get_ntohs(tvb, offset) & 0x0FFF;
1014
1015         /*display response subtree */
1016         ecmp_response_size_tree = proto_tree_add_subtree_format(ecmp_tree, tvb, offset, 2, ett_ecmp_response_size, &ecmp_max_response_item, "Response Size: %X, %X (%d)", chunks, max_response_size, max_response_size);
1017
1018         /*display chunks and max response size in response subtree*/
1019         proto_tree_add_item(ecmp_response_size_tree, hf_ecmp_chunking, tvb, offset, 2, ENC_BIG_ENDIAN);
1020         proto_tree_add_item(ecmp_response_size_tree, hf_ecmp_max_response_size, tvb, offset, 2, ENC_BIG_ENDIAN);
1021         offset+= 2;
1022
1023         return offset;
1024 }
1025
1026
1027 /* a function to display the command code and type (request/response) */
1028 static int add_command_codes(packet_info* pinfo, int offset, tvbuff_t *tvb, proto_tree* ecmp_tree, guint8 transaction_id_value, guint8* command_value)
1029 {
1030         proto_tree *ecmp_command_tree;
1031         const gchar* command_str;
1032         guint8 command;
1033
1034         command = tvb_get_guint8(tvb, offset);
1035         *command_value = command & 0x7F;
1036         command_str = val_to_str(*command_value, command_vals, "Unknown Type (0x%02x)");
1037
1038         /*display command subtree*/
1039         ecmp_command_tree = proto_tree_add_subtree_format(ecmp_tree, tvb, offset, 1, ett_ecmp_command, NULL, "Request Response Code: %s", command_str);
1040
1041         /* Displays the command */
1042         proto_tree_add_item(ecmp_command_tree, hf_ecmp_command, tvb, offset, 1, ENC_BIG_ENDIAN);
1043         /* Displays the type (request/response) */
1044         proto_tree_add_item(ecmp_command_tree, hf_ecmp_type_rr, tvb, offset, 1, ENC_BIG_ENDIAN);
1045
1046         /* Information displayed in the Info column*/
1047         col_add_fstr(pinfo->cinfo, COL_INFO, "%s, %s. Transaction ID: %d",
1048                         command_str, val_to_str(((command & 0x80) >> 7), type_rr, "Unknown Type (0x%02x)"), transaction_id_value);
1049
1050         return offset;
1051 }
1052
1053
1054 /* a function to add a cyclic frame query */
1055 static int add_cyclic_frame_query(int offset, tvbuff_t *tvb, proto_tree* ecmp_tree )
1056 {
1057         /* display the cyclic link number  */
1058         proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_link_num, tvb, offset++, 1, ENC_BIG_ENDIAN);
1059         return offset;
1060 }
1061
1062
1063 /* a function to add a cyclic frame */
1064 static int add_cyclic_frame(int offset, tvbuff_t *tvb, proto_tree* ecmp_tree )
1065 {
1066         guint8 scheme;
1067         proto_item *ecmp_scheme_item = NULL;
1068         proto_tree *ecmp_scheme_tree = NULL;
1069         proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_link_num, tvb, offset++, 1, ENC_BIG_ENDIAN);
1070         proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_align, tvb, offset++, 1, ENC_BIG_ENDIAN);
1071
1072         /* get scheme */
1073         scheme = tvb_get_guint8(tvb, offset);
1074
1075         ecmp_scheme_item = proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_scheme, tvb, offset++, 1, ENC_BIG_ENDIAN);
1076
1077         if (scheme == 1) {
1078                 /* Create a new sub tree spawning off the scheme byte for the synchronisation scheme data to be placed. */
1079                 ecmp_scheme_tree = proto_item_add_subtree(ecmp_scheme_item, ett_ecmp_cyclic_scheme);
1080
1081                 /* grandmaster */
1082                 proto_tree_add_item( ecmp_scheme_tree, hf_ecmp_grandmaster, tvb, offset, 8, ENC_BIG_ENDIAN);
1083                 offset += 8;
1084
1085                 proto_tree_add_item(ecmp_scheme_tree, hf_ecmp_cyclic_frame_time, tvb, offset, 8, ENC_BIG_ENDIAN);
1086                 offset += 8;
1087         }
1088
1089         proto_tree_add_item(ecmp_tree, hf_ecmp_data, tvb, offset, -1, ENC_NA);
1090
1091         return tvb_reported_length(tvb);
1092 }
1093
1094
1095 /* a function to display cyclic tvb data in byte (8-bit), word (16-bit), and long (32-bit) unsigned formats  */
1096 static int display_raw_cyclic_data(guint8 display, int offset, guint16 buffer_size, tvbuff_t *tvb, proto_tree* ecmp_current_tree )
1097 {
1098         /****************************************************************************************/
1099         /*                                                                                      */
1100         /*     display_raw_cyclic_data - display the cyclic data in various formats.            */
1101         /*                                                                                      */
1102         /*     Parameters:   display = selects desired display format.                          */
1103         /*                             0  =  BYTE_FORMAT (8-bits  1F 20 37 BC ...               */
1104         /*                             1  =  WORD_FORMAT (16-bits 1F20 37BC 77F1 ...            */
1105         /*                             2  =  LONG_FORMAT (32-bits  1F2037BC 0013F5CD ...        */
1106         /*                                                                                      */
1107         /*                   offset  =  offset within tvb buffer where this data starts.        */
1108         /*                                                                                      */
1109         /*                   buffer_size = number of bytes to be converted and displayed.       */
1110         /*                                                                                      */
1111         /*                   tvb  =  buffer structure within Wireshark holding this frame.      */
1112         /*                                                                                      */
1113         /*                   ecmp_current_tree  =  the tree where the data is to be displayed.  */
1114         /*                                                                                      */
1115         /*                                                                                      */
1116         /*   Notes: we only display so many elements on a line (before continuing on next line) */
1117         /*                                                                                      */
1118         /*          16 elements per line for byte (8-bit) and word (16-bit)                     */
1119         /*           8 elements per line for long (32-bit)                                      */
1120         /*                                                                                      */
1121         /*  Programmer: Jim Lynch                                                               */
1122         /****************************************************************************************/
1123
1124         /* bail out if the buffer size is zero */
1125         if (buffer_size == 0) {
1126                 proto_tree_add_bytes_format_value(ecmp_current_tree, hf_ecmp_cyclic_data, tvb, offset-1, 0, NULL, "No data");
1127         } else {
1128                 /* define some variables  */
1129                 gchar*          pdata = NULL; /* pointer to array that stores the formatted data string */
1130                 guint16         idx = 0; /* counts through formatted string array */
1131                 guint8          value8 = 0; /* placeholder for extracted 8-bit data */
1132                 guint16         value16 = 0; /* placeholder for extracted 16-bit data */
1133                 guint32         value32 = 0; /* placeholder for extracted 32-bit data */
1134                 guint16         num_elements_total = 0; /* contains total number of elements (byte/word/long) to be processed  */
1135                 const guint16   num_byte_elements_per_line = 16; /* number of byte (8-bit) elements per line e.g.  "1B " (3 chars per element)  */
1136                 const guint16   num_word_elements_per_line = 16; /* number of word (16-bit) elements per line e.g.  "A81B " (5 chars per element) */
1137                 const guint16   num_long_elements_per_line = 8; /* number of long (32-bit) elements per line e.g.  "01F4A81B " (9 chars per element) */
1138                 guint16         num_elements_per_line = 8; /* counts the current number of elements per line */
1139                 guint16         num_elements = 0; /* counts the number of elements in the format string */
1140                 guint16         format_string_size = 0; /* size of dynamic array to hold the formatted string */
1141                 guint16         a = 0; /* value used for looping */
1142                 int             start_offset, line_offset;
1143
1144                 /* calculate format string array size and other stuff                               */
1145                 /*                                                                                  */
1146                 /* Note: format string does require a nul-terminator (the + 1 in the equations)     */
1147                 /*                                                                                  */
1148                 /* display = 0:  (byte format  "1D 24 3F ... A3 "                                   */
1149                 /*      format_string_size = (num_byte_elements_per_line * 3) + 1                   */
1150                 /*                                                                                  */
1151                 /* display = 1:  (word format  "1D24 3F84 120B ... 1FA3 "                           */
1152                 /*      format_string_size = (num_word_elements_per_line * 5) + 1                   */
1153                 /*                                                                                  */
1154                 /* display = 2:  (byte format  "1D243F84 9BC08F20 ... 28BB1FA3 "                    */
1155                 /*      format_string_size = (num_long_elements_per_line * 9) + 1                   */
1156                 /*                                                                                  */
1157                 if (display == cyclic_display_byte_format) {
1158                         format_string_size = (num_byte_elements_per_line * 3) + 1; /* format_string_size = 49  */
1159                         num_elements_per_line = num_byte_elements_per_line; /* num_elements_per_line = 16  */
1160                         num_elements_total = buffer_size;
1161                 } else if (display == cyclic_display_word_format) {
1162                         format_string_size = (num_word_elements_per_line * 5) + 1; /* format_string_size = 81  */
1163                         num_elements_per_line = num_word_elements_per_line; /* num_elements_per_line = 16  */
1164                         num_elements_total = buffer_size >> 1;
1165                 } else if (display == cyclic_display_long_format) {
1166                         format_string_size = (num_long_elements_per_line * 9) + 1; /* format_string_size = 73  */
1167                         num_elements_per_line = num_long_elements_per_line; /* num_elements_per_line = 8  */
1168                         num_elements_total = buffer_size >> 2;
1169                 } else {
1170                         format_string_size = (num_byte_elements_per_line * 3) + 1; /* format_string_size = 49  */
1171                         num_elements_per_line = num_byte_elements_per_line; /* num_elements_per_line = 16  */
1172                         num_elements_total = buffer_size;
1173                 }
1174
1175                 /* allocate dynamic memory for one line  */
1176                 pdata = (gchar *)wmem_alloc(wmem_packet_scope(), format_string_size);
1177
1178                 /* OK, let's get started */
1179                 idx = 0;
1180                 num_elements = 0;
1181
1182                 line_offset = start_offset = offset;
1183                 /* work through the display elements, 1 byte\word\long at a time  */
1184                 for (a = 0; a < num_elements_total; a++ )
1185                         {
1186                         /* use Wireshark accessor function to get the next byte, word, or long data  */
1187                         if (display == cyclic_display_byte_format) {
1188                                 value8 = tvb_get_guint8(tvb, offset);
1189                                 offset++;
1190                         } else if (display == cyclic_display_word_format) {
1191                                 value16 = tvb_get_ntohs(tvb, offset);
1192                                 offset += 2;
1193                         } else if (display == cyclic_display_long_format) {
1194                                 value32 = tvb_get_ntohl(tvb, offset);
1195                                 offset += 4;
1196                         }
1197
1198                         /* increment the num_elements we've done on the current line  */
1199                         num_elements++;
1200
1201                         /* check if we hit the max number of byte elements per line  */
1202                         if (num_elements >= num_elements_per_line) {
1203                                 /* we hit end of the current line  */
1204                                 /* add final value to string */
1205                                 if (display == cyclic_display_byte_format) {
1206                                         g_snprintf(&pdata[idx], 32, "%02x",value8);
1207                                 } else if (display == cyclic_display_word_format) {
1208                                                 g_snprintf(&pdata[idx], 32, "%04x",value16);
1209                                 } else if (display == cyclic_display_long_format) {
1210                                         g_snprintf(&pdata[idx], 32, "%08x",value32);
1211                                 }
1212
1213                                 /* display the completed line in the sub-tree  */
1214                                 proto_tree_add_bytes_format(ecmp_current_tree, hf_ecmp_cyclic_data, tvb, offset, offset-line_offset, NULL, "%s", pdata);
1215
1216                                 /* start the line over */
1217                                 idx = 0;
1218                                 num_elements = 0;
1219                                 line_offset = offset;
1220
1221                         } else {
1222                                 /* we're still adding to the current line  */
1223                                 /* add current value to string */
1224                                 if (display == cyclic_display_byte_format) {
1225                                         g_snprintf(&pdata[idx], 32, "%02x ",value8);
1226                                         idx += 3;
1227                                 } else if (display == cyclic_display_word_format) {
1228                                         g_snprintf(&pdata[idx], 32, "%04x ",value16);
1229                                         idx += 5;
1230                                 } else if (display == cyclic_display_long_format) {
1231                                         g_snprintf(&pdata[idx], 32, "%08x ",value32);
1232                                         idx += 9;
1233                                 }
1234                         }
1235                 }
1236
1237                 /* if we exited the loop, see if there's a partial line to display  */
1238                 if (num_elements > 0) {
1239                         /* add null-terminator to partial line  */
1240                         pdata[idx] = 0x00;
1241
1242                         /* display the partial line in the sub-tree  */
1243                         proto_tree_add_bytes_format(ecmp_current_tree, hf_ecmp_cyclic_data, tvb, start_offset, offset-start_offset, NULL, "%s", pdata);
1244                 }
1245         }
1246         return offset;
1247 }
1248
1249
1250 /* a function returning the information requested by the 'info' command */
1251 static void add_info_response(int offset, tvbuff_t *tvb, proto_tree* ecmp_tree)
1252 {
1253         proto_item* ecmp_info_address_item = NULL;
1254         proto_tree* ecmp_info_tree = NULL;
1255         proto_tree* ecmp_info_address_tree = NULL, *address_tree;
1256         guint16 length = 0;
1257         guint8 no_of_address = 0;
1258         guint8 i = 0; /*for counting */
1259
1260         length = tvb_reported_length(tvb);
1261
1262         /*display info response tree */
1263         ecmp_info_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 6, ett_ecmp_info_type, NULL, "Response Information");
1264
1265         /*display buffer size */
1266         proto_tree_add_item(ecmp_info_tree, hf_ecmp_buffer_size, tvb, offset, 2, ENC_BIG_ENDIAN);
1267         offset+= 2;
1268
1269         /*display max response time */
1270         proto_tree_add_item(ecmp_info_tree, hf_ecmp_max_response, tvb, offset, 2, ENC_BIG_ENDIAN);
1271         offset+= 2;
1272
1273         /*display max handle period */
1274         proto_tree_add_item(ecmp_info_tree, hf_ecmp_max_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1275         offset+= 2;
1276
1277         if (length > offset) {
1278                 /*display count of default server addresses */
1279                 ecmp_info_address_item = proto_tree_add_item(ecmp_tree, hf_ecmp_info_address, tvb, offset, 1, ENC_BIG_ENDIAN);
1280                 ecmp_info_address_tree = proto_item_add_subtree(ecmp_info_address_item, ett_ecmp_info_count);
1281                 no_of_address = tvb_get_guint8(tvb, offset);
1282
1283                 if (no_of_address > 0) {
1284                         /*do code to display address data */
1285                         for (i = 0; i < no_of_address; i++) {
1286                                 address_tree = proto_tree_add_subtree_format(ecmp_info_address_tree, tvb, offset, 1, ett_ecmp_address, NULL, "Address %d", i+1);
1287                                 proto_tree_add_item(address_tree, hf_ecmp_physical_address, tvb, offset, 1, ENC_NA);
1288                                 proto_tree_add_item(address_tree, hf_ecmp_logical_address, tvb, offset, 1, ENC_NA);
1289                                 offset+= 1;
1290                         }
1291                 }
1292         }
1293 }
1294
1295
1296 /*--------------------------------------------------------------------*/
1297 /*                Parameter Access Commands                           */
1298 /*--------------------------------------------------------------------*/
1299
1300 /* a function to display data given data_type */
1301 static int get_data_type(packet_info* pinfo, int offset, guint8 data_type, tvbuff_t *tvb, proto_tree* ecmp_current_tree)
1302 {
1303         /*switch to decide correct data_type dissection*/
1304         switch(data_type)
1305         {
1306         case 0: /*display boolean*/
1307                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_boolean, tvb, offset, 1, ENC_NA);
1308                 break;
1309         case 1: /*display INT8*/
1310                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_int8, tvb, offset, 1, ENC_NA);
1311                 break;
1312         case 2: /*display UINT8*/
1313                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_uint8, tvb, offset, 1, ENC_NA);
1314                 break;
1315         case 3: /*display INT16*/
1316                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_int16, tvb, offset, 2, ENC_BIG_ENDIAN);
1317                 offset+= 1;
1318                 break;
1319         case 4: /*display UINT16*/
1320                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_uint16, tvb, offset, 2, ENC_BIG_ENDIAN);
1321                 offset+= 1;
1322                 break;
1323         case 5: /*display INT32*/
1324                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
1325                 offset+= 3;
1326                 break;
1327         case 6: /*display UINT32*/
1328                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_uint32, tvb, offset, 4, ENC_BIG_ENDIAN);
1329                 offset+= 3;
1330                 break;
1331         case 7: /*display INT64*/
1332                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_int64, tvb, offset, 8, ENC_BIG_ENDIAN);
1333                 offset+= 7;
1334                 break;
1335         case 8: /*display UINT64*/
1336                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_uint64, tvb, offset, 8, ENC_BIG_ENDIAN);
1337                 offset+= 7;
1338                 break;
1339         case 9:  /*display INT128*/
1340                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data, tvb, offset, 16, ENC_NA);
1341                 offset += 15;
1342                 break;
1343         case 10: /*display UINT128*/
1344                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data, tvb, offset, 16, ENC_NA);
1345                 offset += 15;
1346                 break;
1347         case 20:/*display single float*/
1348                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_float, tvb, offset, 4, ENC_BIG_ENDIAN);
1349                 offset+= 3;
1350                 break;
1351         case 21: /*display double float*/
1352                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_data_double, tvb, offset, 8, ENC_BIG_ENDIAN);
1353                 offset+= 7;
1354                 break;
1355         case 30: /*display string ID*/
1356                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_string_id, tvb, offset, 2, ENC_NA|ENC_ASCII);
1357                 offset++;
1358                 break;
1359         case 32: /*display (ECMP) string*/
1360                 proto_tree_add_item(ecmp_current_tree, hf_ecmp_ecmp_string, tvb, offset+1, 2, ENC_BIG_ENDIAN|ENC_ASCII);
1361                 offset += (tvb_get_ntohs(tvb, offset+1) + 2);
1362                 break;
1363         default: /*display untyped size*/
1364                 if (data_type < 128) {
1365                         proto_tree_add_expert(ecmp_current_tree, pinfo, &ei_ecmp_data_type, tvb, 0, -1);
1366                 } else {
1367                         proto_tree_add_item(ecmp_current_tree, hf_ecmp_data, tvb, offset, (data_type- 127), ENC_NA);
1368                         offset += (data_type- 128);
1369                 }
1370                 break;
1371         }
1372         return offset;
1373 }
1374
1375
1376 /* a function to add the parameter address schemes for 'read' command */
1377 static int get_address_scheme(packet_info* pinfo, int offset, guint8 scheme, tvbuff_t *tvb, proto_tree* ecmp_parameter_tree)
1378 {
1379         /*if address scheme is standard*/
1380         switch (scheme)
1381         {
1382         case 0:
1383                 /*display Menu no. */
1384                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_address_scheme_menu, tvb, offset, 2, ENC_BIG_ENDIAN);
1385                 offset+= 2;
1386
1387                 /*display parameter no. */
1388                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_address_scheme_parameter, tvb, offset, 2, ENC_BIG_ENDIAN);
1389                 offset++;
1390                 break;
1391
1392         case 1:/*if address scheme is slot specific*/
1393                 /*display slot number*/
1394                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_address_scheme_slot, tvb, offset, 1, ENC_NA);
1395                 offset++;
1396
1397                 /*display Menu no. */
1398                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_address_scheme_menu, tvb, offset, 2, ENC_BIG_ENDIAN);
1399                 offset+= 2;
1400
1401                 /*display parameter no. */
1402                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_address_scheme_parameter, tvb, offset, 2, ENC_BIG_ENDIAN);
1403                 offset++;
1404                 break;
1405
1406         case 3: /*if address scheme is variable*/
1407                 /*display variable name */
1408                 offset--;
1409                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_variable_name, tvb, offset+1, 2, ENC_BIG_ENDIAN|ENC_ASCII);
1410                 offset += (tvb_get_ntohs(tvb, offset+1) + 2);
1411                 break;
1412
1413         case 4: /*if address scheme is NULL*/
1414                 /*null size*/
1415                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_address_scheme_null_byte_size, tvb, offset, 1, ENC_NA);
1416                 offset++;
1417                 break;
1418
1419         default:
1420                 proto_tree_add_expert(ecmp_parameter_tree, pinfo, &ei_ecmp_parameter_addressing_scheme, tvb, offset, 1);
1421         }
1422         return offset;
1423 }
1424
1425
1426 /* a function to display an array of the read address schemes */
1427 static void get_parameter_definitions(packet_info* pinfo, int offset, guint8 command_value, tvbuff_t *tvb, proto_tree* ecmp_tree)
1428 {
1429         proto_item* ecmp_parameter_item = NULL;
1430         proto_tree* ecmp_parameter_number_tree = NULL;
1431         proto_tree* ecmp_parameter_tree = NULL;
1432         guint8 count = 0;
1433         guint8 a = 0;
1434         guint8 data_type = 0;
1435         gint8 dec = 0;
1436         guint8 scheme = 0;
1437         guint16 n = 0;
1438
1439         scheme = tvb_get_guint8(tvb, offset);
1440
1441         ecmp_parameter_item = proto_tree_add_item(ecmp_tree, hf_ecmp_parameter_address, tvb, offset, 1, ENC_BIG_ENDIAN);
1442         ecmp_parameter_tree = proto_item_add_subtree(ecmp_parameter_item, ett_ecmp_param_address);
1443
1444         offset++;
1445         /* if "GetNextObjects" command */
1446         if(command_value == ECMP_COMMAND_GETNEXTOBJECTS)
1447         {
1448                 offset = get_address_scheme(pinfo, offset, scheme, tvb, ecmp_parameter_tree);
1449                 offset++;
1450                 proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_subsequent_object_requests, tvb, offset, 1, ENC_NA);
1451         }else
1452         {
1453                 /*display tree with count of definitions */
1454                 ecmp_parameter_item = proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_parameter_definitions, tvb, offset, 1, ENC_BIG_ENDIAN);
1455                 ecmp_parameter_number_tree = proto_item_add_subtree(ecmp_parameter_item, ett_ecmp_param_address);
1456
1457                 count = tvb_get_guint8(tvb,offset);
1458
1459                 offset++;
1460
1461                 switch(scheme)/*sets n so that the tree highlights bytes in scheme specific data*/
1462                 {
1463                         case 0:
1464                                 n = 4;
1465                                 break;
1466                         case 1:
1467                                 n = 5;
1468                                 break;
1469                         case 3:
1470                                 n = 1 + ((tvb_get_guint8(tvb, offset+1)<<8)|(tvb_get_guint8(tvb, offset+2)));
1471                                 break;
1472                         default:
1473                                 n = 0;
1474                                 break;
1475                 }
1476
1477                 if (command_value == ECMP_COMMAND_OBJECTINFO) {
1478                         n += 1;
1479                 }
1480
1481                 for (a = 0; a < count; a++) {
1482                         ecmp_parameter_tree = proto_tree_add_subtree_format(ecmp_parameter_number_tree, tvb, offset, n, ett_ecmp_param_address, NULL, "Parameter Definition %d:", (a+1));
1483
1484                         if (command_value == ECMP_COMMAND_OBJECTINFO) {
1485                                 proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_info_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1486                                 offset++;
1487                                 offset = get_address_scheme(pinfo, offset, scheme, tvb, ecmp_parameter_tree);
1488                                 offset++;
1489                         } else {
1490                                 /*output the address schemes of the parameter requests */
1491                                 offset = get_address_scheme(pinfo, offset, scheme, tvb, ecmp_parameter_tree);
1492                                 offset++;
1493                                 if (command_value == ECMP_COMMAND_WRITE) {
1494                                         data_type = tvb_get_guint8(tvb, offset);
1495                                         proto_tree_add_item(ecmp_parameter_tree, hf_ecmp_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1496                                         offset++;
1497                                         dec = tvb_get_gint8(tvb, offset);
1498                                         if (dec != -1) {
1499                                                 proto_tree_add_int(ecmp_parameter_tree, hf_ecmp_number_of_decimal_places, tvb, offset, 1, dec);
1500                                         } else {
1501                                                 proto_tree_add_int_format_value(ecmp_parameter_tree, hf_ecmp_number_of_decimal_places, tvb, offset, 1, dec, "0 (Invalid type)");
1502                                         }
1503                                         offset++;
1504                                         offset = get_data_type(pinfo, offset, data_type, tvb, ecmp_parameter_tree);
1505                                         offset++;
1506                                 }
1507                         }
1508                 }
1509         }
1510 }
1511
1512
1513 /* a function to show the "objectinfo" command response */
1514 static void get_object_info_response(packet_info* pinfo, int offset, tvbuff_t *tvb, proto_tree* ecmp_tree)
1515 {
1516         proto_item* ecmp_response_item = NULL;
1517         proto_tree* ecmp_parameter_number_tree = NULL;
1518         proto_tree* ecmp_parameter_response_tree = NULL;
1519         guint8 count = 0; /*stores number of parameter read responses */
1520         guint8 a = 0; /*counting varables */
1521         guint8 n = 0;
1522         guint8 info_type0 = 0;
1523         guint16 length = 0;
1524         guint8 data_type = 0;
1525
1526         length = tvb_reported_length(tvb);
1527
1528         ecmp_response_item = proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_parameter_responses, tvb, offset, 1, ENC_BIG_ENDIAN);
1529         ecmp_parameter_number_tree = proto_item_add_subtree(ecmp_response_item, ett_ecmp_param_address);
1530
1531         count = tvb_get_guint8(tvb, offset);
1532
1533         if (count == 0) {
1534                 offset++;
1535                 proto_tree_add_item(ecmp_parameter_number_tree, hf_ecmp_parameter_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1536
1537         } else {
1538                 /*display info data response */
1539                 for (a = 0; a < count; a++) {
1540                         if (a==0) {
1541                                 n = (length-offset)/count;
1542                         }
1543                         offset++;
1544                         /*display response header */
1545                         proto_tree_add_subtree_format(ecmp_parameter_number_tree, tvb, offset, n, ett_ecmp_command, NULL, "Response %d:", (a+1));
1546
1547                         /*display response status */
1548                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_parameter_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1549                         offset++;
1550
1551                         /*display response data */
1552                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_info_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1553                         info_type0 = tvb_get_guint8(tvb, offset);
1554
1555                         switch(info_type0)
1556                         {
1557                                 case 0:
1558                                         /*no information available */
1559                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_no_information_available, tvb, offset, 1, ENC_NA);
1560                                         break;
1561                                 case 1:
1562                                         /*display min parameter in menu */
1563                                         offset++;
1564                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_min_param_menu, tvb, offset, 2, ENC_BIG_ENDIAN);
1565                                         offset++;
1566                                         break;
1567                                 case 2:
1568                                         /*display max parameter in menu */
1569                                         offset++;
1570                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_max_param_menu, tvb, offset, 2, ENC_BIG_ENDIAN);
1571                                         offset++;
1572                                         break;
1573                                 case 3:
1574                                         {
1575                                                 static const int * fields[] = {
1576                                                         &hf_ecmp_param_format_bit_default_unipolar,
1577                                                         &hf_ecmp_param_format_write_allowed,
1578                                                         &hf_ecmp_param_format_read_not_allowed,
1579                                                         &hf_ecmp_param_format_protected_from_destinations,
1580                                                         &hf_ecmp_param_format_parameter_not_visible,
1581                                                         &hf_ecmp_param_format_not_clonable,
1582                                                         &hf_ecmp_param_format_voltage_or_current_rating_dependent,
1583                                                         &hf_ecmp_param_format_parameter_has_no_default,
1584                                                         &hf_ecmp_param_format_number_of_decimal_places,
1585                                                         &hf_ecmp_param_format_variable_maximum_and_minimum,
1586                                                         &hf_ecmp_param_format_string_parameter,
1587                                                         &hf_ecmp_param_format_desitination_set_up_parameter,
1588                                                         &hf_ecmp_param_format_filtered_when_displayed,
1589                                                         &hf_ecmp_param_format_pseudo_read_only,
1590                                                         &hf_ecmp_param_format_display_format,
1591                                                         &hf_ecmp_param_format_floating_point_value,
1592                                                         &hf_ecmp_param_format_units,
1593                                                         NULL
1594                                                 };
1595
1596                                                 /*display data for parameter format- UNITS and Display Format need dissecting? */
1597                                                 offset++;
1598                                                 proto_tree_add_bitmask_list(ecmp_parameter_response_tree, tvb, offset, 4, fields, ENC_BIG_ENDIAN);
1599                                                 offset+= 3;
1600                                         }
1601                                         break;
1602                                 case 4:
1603                                         /*display minimum allowed value*/
1604                                         offset++;
1605                                         data_type = tvb_get_guint8(tvb,offset);
1606                                         ecmp_response_item = proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1607                                         offset++;
1608                                         offset = get_data_type(pinfo, offset, data_type, tvb, ecmp_parameter_response_tree);
1609                                         break;
1610                                 case 5:
1611                                         /*display maximum allowed value*/
1612                                         offset++;
1613                                         data_type = tvb_get_guint8(tvb,offset);
1614                                         ecmp_response_item = proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1615                                         offset++;
1616                                         offset = get_data_type(pinfo, offset, data_type, tvb, ecmp_parameter_response_tree);
1617                                         break;
1618                                 case 6:
1619                                         /*display Units- ID string */
1620                                         offset++;
1621                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_string_id, tvb, offset, 2, ENC_NA|ENC_ASCII);
1622                                         offset++;
1623                                         break;
1624                                 case 7:
1625                                         /*display data type */
1626                                         offset++;
1627                                         ecmp_response_item = proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1628                                         break;
1629                                 default:
1630                                         expert_add_info(pinfo, ecmp_response_item, &ei_ecmp_info_type);
1631                                         break;
1632                         }
1633                 }
1634         }
1635 }
1636
1637
1638 /* a function to display an array of the read responses */
1639 static int get_parameter_responses(packet_info* pinfo, int offset, guint8 command_value, tvbuff_t *tvb, proto_tree* ecmp_tree)
1640 {
1641         proto_item* ecmp_response_item = NULL;
1642         proto_tree* ecmp_parameter_number_tree = NULL;
1643         proto_tree* ecmp_parameter_response_tree = NULL;
1644         guint8 count = 0; /*stores number of parameter read responses */
1645         guint8 a = 0; /*counting varables */
1646         guint8 data_type = 0;
1647         guint8 unit_id = 0;
1648         gint8 dec = 0;
1649         guint16 n = 0;
1650         guint8 st_error = 0;
1651         guint16 length = 0;
1652         guint8 scheme = 0;
1653         int start_offset;
1654
1655         scheme = tvb_get_guint8(tvb, offset);
1656         length = tvb_reported_length(tvb);
1657
1658         if (command_value == ECMP_COMMAND_GETNEXTOBJECTS) {
1659                 /*display addressing scheme*/
1660                 proto_tree_add_item(ecmp_tree, hf_ecmp_parameter_address, tvb, offset, 1, ENC_BIG_ENDIAN);
1661                 offset++;
1662         }
1663
1664         /*display number of responses*/
1665         ecmp_response_item = proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_parameter_responses, tvb, offset, 1, ENC_BIG_ENDIAN);
1666         ecmp_parameter_number_tree = proto_item_add_subtree(ecmp_response_item, ett_ecmp_param_address);
1667
1668         count = tvb_get_guint8(tvb, offset);
1669
1670         if (count == 0) {
1671                 offset++;
1672                 if (command_value != ECMP_COMMAND_GETNEXTOBJECTS) {
1673                         /*display parameter status*/
1674                         proto_tree_add_item(ecmp_parameter_number_tree, hf_ecmp_parameter_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1675                 }
1676         } else {
1677                 /*loop for outputting parameter data responses*/
1678                 for (a = 0; a < count; a++) {
1679                         if (command_value == ECMP_COMMAND_WRITE) {
1680                                 if (a==0) {
1681                                         n = (length-offset)/count; /*set byte highlighting*/
1682                                 }
1683                                 offset++;
1684                                 /*display response: (a+1)*/
1685                                 ecmp_parameter_response_tree = proto_tree_add_subtree_format(ecmp_parameter_number_tree, tvb, offset, n, ett_ecmp_command, NULL, "Response %d:", (a+1));
1686                                 ecmp_response_item = proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_parameter_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1687
1688                         } else if (command_value == ECMP_COMMAND_GETNEXTOBJECTS) {
1689                                 if (a==0) {
1690                                         n = (length-offset)/count;
1691                                 }
1692                                 offset++;
1693                                 /*display response: (a+1)*/
1694                                 ecmp_parameter_response_tree = proto_tree_add_subtree_format(ecmp_parameter_number_tree, tvb, offset, n, ett_ecmp_command, NULL, "Response %d:", (a+1));
1695                                 offset = get_address_scheme(pinfo, offset, scheme, tvb, ecmp_parameter_response_tree);
1696                         } else {
1697                                 /*if status is error */
1698                                 if (tvb_get_gint8(tvb, offset+1) < 0) {
1699                                         /*output status*/
1700                                         st_error = 1;
1701                                         offset++;
1702                                         ecmp_parameter_response_tree = proto_tree_add_subtree_format(ecmp_parameter_number_tree, tvb, offset, 1, ett_ecmp_command, NULL, "Response %d:", (a+1));
1703                                         ecmp_response_item = proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_parameter_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1704                                         if ((a+1) != count) {
1705                                                 /*loop to move to next data_type (skips bytes == 0)*/
1706                                                 while(1) {
1707                                                         if(tvb_get_guint8(tvb, offset+1)==0) {
1708                                                                 offset++;
1709                                                         } else {
1710                                                                 break;
1711                                                         }
1712                                                 }
1713                                         }
1714                                 } else {
1715                                         offset++;
1716                                         /*display response data_byte*/
1717                                         start_offset = offset;
1718                                         ecmp_parameter_response_tree = proto_tree_add_subtree_format(ecmp_parameter_number_tree, tvb, offset, 0, ett_ecmp_command, &ecmp_response_item, "Response %d:", (a+1));
1719                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_parameter_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1720                                         offset++;
1721                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
1722                                         data_type = tvb_get_guint8(tvb,offset);
1723                                         offset++;
1724                                         offset = get_data_type(pinfo, offset, data_type, tvb, ecmp_parameter_response_tree);
1725
1726                                         /*if "ReadWithType" */
1727                                         if ((command_value == ECMP_COMMAND_READWITHTYPE) && (st_error!= 1)) {
1728                                                 offset++;
1729                                                 /*display decimal places*/
1730                                                 dec = tvb_get_gint8(tvb, offset);
1731                                                 if (dec != -1) {
1732                                                         proto_tree_add_int(ecmp_parameter_response_tree, hf_ecmp_number_of_decimal_places, tvb, offset, 1, dec);
1733                                                 } else {
1734                                                         proto_tree_add_int_format_value(ecmp_parameter_response_tree, hf_ecmp_number_of_decimal_places, tvb, offset, 1, dec, "0 (Invalid type)");
1735                                                 }
1736                                                 offset++;
1737                                                 /*display unit ID*/
1738                                                 unit_id = tvb_get_guint8(tvb, offset);
1739                                                 proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_display_unit_id, tvb, offset, 1, ENC_NA);
1740                                                 if (unit_id == 255) {
1741                                                         offset++;
1742                                                         proto_tree_add_item(ecmp_parameter_response_tree, hf_ecmp_unit_id_string, tvb, offset, 2, ENC_BIG_ENDIAN|ENC_ASCII);
1743                                                         offset += (tvb_get_ntohs(tvb, offset) + 2);
1744                                                 }
1745                                         }
1746
1747                                         proto_item_set_len(ecmp_response_item, offset-start_offset);
1748                                 }
1749
1750                         }
1751                 }
1752         }
1753         return offset;
1754 }
1755
1756
1757 /*--------------------------------------------------------------------*/
1758 /*                   File Access Commands                             */
1759 /*--------------------------------------------------------------------*/
1760 /* a function to dissect "FileOpen" command */
1761 static void file_open(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
1762 {
1763         proto_tree* ecmp_scheme_data_tree = NULL;
1764         guint8 additional_scheme = 0;
1765         guint8 relative = 0;
1766
1767         if (request) {
1768                 static const int * fields[] = {
1769                         &hf_ecmp_open_in_non_blocking_mode,
1770                         &hf_ecmp_open_file_relative_to_specified_directory_handle,
1771                         &hf_ecmp_file_access_mode,
1772                         NULL
1773                 };
1774
1775                 proto_tree_add_bitmask(ecmp_tree, tvb, offset, hf_ecmp_access_mode, ett_ecmp_access_mode, fields, ENC_BIG_ENDIAN);
1776                 relative = (tvb_get_guint8(tvb, offset) & 0x40) ? 1 : 0;
1777                 offset++;
1778
1779                 /*display additional scheme*/
1780                 proto_tree_add_item(ecmp_tree, hf_ecmp_additional_scheme, tvb, offset, 1, ENC_BIG_ENDIAN);
1781                 additional_scheme= tvb_get_guint8(tvb, offset);
1782
1783                 /*display file name*/
1784                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_name, tvb, offset+1, 2, ENC_BIG_ENDIAN|ENC_ASCII);
1785                 offset += (tvb_get_ntohs(tvb, offset+1) + 2);
1786
1787                 /*only show file handle in relative mode*/
1788                 if (relative == 1) {
1789                         offset++;
1790
1791                         /*display file handle*/
1792                         proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1793                 }
1794
1795                 if (additional_scheme == 1) {
1796                         /*display additional data*/
1797                         offset+= 2;
1798                         ecmp_scheme_data_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, -1, ett_ecmp_access_file, NULL, "Additional scheme data");
1799                         proto_tree_add_item(ecmp_scheme_data_tree, hf_ecmp_scheme_data_length, tvb, offset, 1, ENC_NA);
1800                         offset++;
1801                         proto_tree_add_item(ecmp_scheme_data_tree, hf_ecmp_data, tvb, offset, -1, ENC_NA);
1802                 }
1803         } else {
1804                 /*display file status*/
1805                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1806
1807                 if (tvb_get_gint8(tvb, offset) >= 0) {
1808                         offset++;
1809                         /*display file handle*/
1810                         proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1811                 }
1812         }
1813 }
1814
1815
1816 /* a function to dissect "FileRead" command */
1817 static void file_read(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
1818 {
1819         guint16 req_bytes = 0;
1820
1821         if (request) {
1822                 /*display file handle*/
1823                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1824                 offset+=2;
1825
1826                 /*display requested bytes*/
1827                 proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_requested_bytes, tvb, offset, 2, ENC_BIG_ENDIAN);
1828
1829         } else {
1830                 /*display file status*/
1831                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1832
1833                 if (tvb_get_gint8(tvb, offset)>= 0) {
1834                         offset++;
1835
1836                         /*display bytes for reading*/
1837                         req_bytes = tvb_get_ntohs(tvb, offset);
1838                         proto_tree_add_item(ecmp_tree, hf_ecmp_response_data, tvb, offset, req_bytes+2, ENC_NA);
1839                         /*offset += (2+req_bytes);*/
1840                 }
1841         }
1842 }
1843
1844
1845 /* a function to dissect "FileWrite" command */
1846 static void file_write(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
1847 {
1848         guint16 req_bytes;
1849
1850         if (request) {
1851                 /*display file handle*/
1852                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1853                 offset+=2;
1854
1855                 /*display bytes for writing*/
1856                 req_bytes = tvb_get_ntohs(tvb, offset);
1857                 proto_tree_add_item(ecmp_tree, hf_ecmp_data, tvb, offset+2, req_bytes, ENC_NA);
1858                 /*offset += (2+req_bytes);*/
1859
1860         } else {
1861                 /*display file status*/
1862                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1863                 /*offset++;*/
1864         }
1865 }
1866
1867
1868 /*a function to dissect "FileClose" command*/
1869 static void file_close(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
1870 {
1871         if (request) {
1872                 /*display file handle*/
1873                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1874                 offset+=2;
1875
1876                 /*display number of data bytes transferred*/
1877                 proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_bytes_transferred, tvb, offset, 4, ENC_BIG_ENDIAN);
1878                 offset+= 4;
1879
1880                 /*display CRC value*/
1881                 proto_tree_add_item(ecmp_tree, hf_ecmp_crc, tvb, offset, 4, ENC_BIG_ENDIAN);
1882         } else {
1883                 /*display file status*/
1884                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1885                 offset++;
1886         }
1887 }
1888
1889
1890 /*a function to display file attributes*/
1891 static int get_file_attribute(packet_info* pinfo, int offset, guint8 attribute0, tvbuff_t *tvb, proto_tree* ecmp_current_tree)
1892 {
1893         nstime_t ts;
1894
1895         switch(attribute0)
1896         {
1897                 case 0: /*display length of file*/
1898                         proto_tree_add_item(ecmp_current_tree, hf_ecmp_file_length, tvb, offset, 4, ENC_BIG_ENDIAN);
1899                         offset+= 3;
1900                         break;
1901                 case 1: /*display integrity*/
1902                         proto_tree_add_item(ecmp_current_tree, hf_ecmp_file_integrity, tvb, offset, 1, ENC_BIG_ENDIAN);
1903                         break;
1904                 case 2: /*display CRC*/
1905                         proto_tree_add_item(ecmp_current_tree, hf_ecmp_crc, tvb, offset, 4, ENC_BIG_ENDIAN);
1906                         offset+= 3;
1907                         break;
1908                 case 3: /*display attrib*/
1909                         {
1910                                 static const int * fields[] = {
1911                                         &hf_ecmp_display_attr_read_only,
1912                                         &hf_ecmp_display_attr_hidden,
1913                                         &hf_ecmp_display_attr_system,
1914                                         &hf_ecmp_display_attr_volume_label,
1915                                         &hf_ecmp_display_attr_subdirectory,
1916                                         &hf_ecmp_display_attr_archive,
1917                                         NULL
1918                                 };
1919
1920                                 proto_tree_add_bitmask_list(ecmp_current_tree, tvb, offset, 1, fields, ENC_BIG_ENDIAN);
1921                         }
1922                         break;
1923                 case 4: /*display creation date*/
1924                         ts.secs = tvb_get_ntohl(tvb, offset);
1925                         ts.nsecs = 0;
1926                         proto_tree_add_time(ecmp_current_tree, hf_ecmp_display_creation, tvb, offset, 4, &ts);
1927                         offset+= 3;
1928                         break;
1929                 case 5: /*display modification date*/
1930                         ts.secs = tvb_get_ntohl(tvb, offset);
1931                         ts.nsecs = 0;
1932                         proto_tree_add_time(ecmp_current_tree, hf_ecmp_display_modification, tvb, offset, 4, &ts);
1933                         offset+= 3;
1934                         break;
1935                 default: /*display incorrect attribute type error*/
1936                         proto_tree_add_expert(ecmp_current_tree, pinfo, &ei_ecmp_attribute_type, tvb, offset, 1);
1937                         break;
1938         }
1939         return offset;
1940 }
1941
1942
1943 /*a function to dissect "FileInfo" command*/
1944 static void file_info(packet_info* pinfo, int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
1945 {
1946         proto_item* ecmp_file_info_item = NULL;
1947         proto_tree* ecmp_file_info_tree = NULL;
1948         proto_tree* ecmp_file_info_att_tree = NULL;
1949         guint8 no_of_att = 0;
1950         guint8 attribute0 = 0;
1951         guint8 a = 0;
1952         int start_offset;
1953
1954         if (request) {
1955                 /*display file handle*/
1956                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
1957                 offset+=2;
1958
1959                 /*display number of attributes*/
1960                 no_of_att = tvb_get_guint8(tvb, offset);
1961                 ecmp_file_info_item = proto_tree_add_uint(ecmp_tree, hf_ecmp_no_of_attributes, tvb, offset, 1, no_of_att);
1962                 ecmp_file_info_tree = proto_item_add_subtree(ecmp_file_info_item, ett_ecmp_file_info);
1963                 offset++;
1964
1965                 /*display attributes*/
1966                 for (a = 0; a < no_of_att; a++) {
1967                         ecmp_file_info_item = proto_tree_add_item(ecmp_file_info_tree, hf_ecmp_file_attributes, tvb, offset, 1, ENC_BIG_ENDIAN);
1968                         ecmp_file_info_att_tree = proto_item_add_subtree(ecmp_file_info_item, ett_ecmp_file_info_att);
1969                         attribute0 = tvb_get_guint8(tvb, offset);
1970                         offset++;
1971                         offset = get_file_attribute(pinfo, offset, attribute0, tvb, ecmp_file_info_att_tree);
1972                 }
1973
1974                 proto_item_set_len(ecmp_file_info_item, no_of_att);
1975         } else {
1976                 /*display file status*/
1977                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
1978
1979                 offset++;
1980
1981                 /*display number of attributes*/
1982                 no_of_att = tvb_get_guint8(tvb, offset);
1983                 ecmp_file_info_item = proto_tree_add_uint(ecmp_tree, hf_ecmp_no_of_attributes, tvb, offset, 1, no_of_att);
1984                 ecmp_file_info_tree = proto_item_add_subtree(ecmp_file_info_item, ett_ecmp_file_info);
1985                 start_offset = offset;
1986
1987                 /*display attributes*/
1988                 for (a = 0; a < no_of_att; a++) {
1989                         offset++;
1990                         ecmp_file_info_item = proto_tree_add_item(ecmp_file_info_tree, hf_ecmp_file_attributes, tvb, offset, 1, ENC_BIG_ENDIAN);
1991                         ecmp_file_info_att_tree = proto_item_add_subtree(ecmp_file_info_item, ett_ecmp_file_info_att);
1992                         attribute0 = tvb_get_guint8(tvb, offset);
1993                         offset++;
1994                         offset = get_file_attribute(pinfo, offset, attribute0, tvb, ecmp_file_info_att_tree);
1995                 }
1996                 proto_item_set_len(ecmp_file_info_item, offset-start_offset);
1997         }
1998 }
1999
2000
2001 /*a function to dissect "FileStatus"/"FileDelete" commands*/
2002 static void file_state_delete(guint16 offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2003 {
2004         if (request) {
2005                 /*display file handle*/
2006                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
2007
2008         } else {
2009                 /*display file status*/
2010                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
2011         }
2012 }
2013
2014
2015 /*a function to dissect "FilePos" command*/
2016 static void file_pos(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2017 {
2018         proto_tree* ecmp_file_position_tree = NULL;
2019
2020         if (request) {
2021                 /*display file handle*/
2022                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
2023                 offset+=2;
2024
2025                 /*display "position" header*/
2026                 ecmp_file_position_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 5, ett_ecmp_file_position, NULL, "Position");
2027
2028                 /*display reference point*/
2029                 proto_tree_add_item(ecmp_file_position_tree, hf_ecmp_file_ref_point, tvb, offset, 1, ENC_BIG_ENDIAN);
2030                 offset++;
2031
2032                 /*display offset from ref point*/
2033                 proto_tree_add_item(ecmp_file_position_tree, hf_ecmp_ref_offset, tvb, offset, 4, ENC_BIG_ENDIAN);
2034
2035         } else {
2036                 /*display file status*/
2037                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
2038
2039                 if(tvb_get_gint8(tvb,offset) >= 0) {
2040                         offset++;
2041
2042                         /*display offset from ref point*/
2043                         proto_tree_add_item(ecmp_file_position_tree, hf_ecmp_ref_offset, tvb, offset, 4, ENC_BIG_ENDIAN);
2044                 }
2045         }
2046 }
2047
2048
2049 /*a function to dissect "FileList" command*/
2050 static void file_list(packet_info* pinfo, int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2051 {
2052         proto_item* ecmp_file_list_item, *ecmp_file_list_item2, *item_type_item;
2053         proto_tree* ecmp_file_list_no_tree = NULL;
2054         proto_tree* ecmp_file_list_tree = NULL;
2055         guint8 no_of_items = 0;
2056         guint8 item_type = 0;
2057         guint8 a = 0;
2058         guint16 n = 0;
2059         int start_offset, start_offset2;
2060
2061         if (request) {
2062                 /*display file handle*/
2063                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_handle, tvb, offset, 2, ENC_BIG_ENDIAN);
2064                 offset+= 2;
2065
2066                 /*display number of files to list*/
2067                 proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_files_to_list, tvb, offset, 1, ENC_NA);
2068         } else {
2069                 /*display file status*/
2070                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
2071
2072                 if (tvb_get_gint8(tvb,offset) >= 0) {
2073                         offset++;
2074
2075                         /*display number of files to list*/
2076                         no_of_items = tvb_get_guint8(tvb, offset);
2077                         proto_tree_add_item(ecmp_tree, hf_ecmp_number_of_files_to_list, tvb, offset, 1, ENC_NA);
2078                         offset++;
2079
2080                         /*display hash value (dissection TBD)*/
2081                         ecmp_file_list_item = proto_tree_add_item(ecmp_tree, hf_ecmp_file_hash, tvb, offset, 2, ENC_BIG_ENDIAN);
2082                         offset++;
2083
2084                         /*display subtree for files*/
2085                         start_offset = offset+1;
2086                         ecmp_file_list_no_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset+1, no_of_items, ett_ecmp_file_list_no, &ecmp_file_list_item, "Files");
2087
2088                         /*display list of file names*/
2089                         for (a = 0; a < no_of_items; a++) {
2090                                 start_offset2 = offset;
2091                                 offset++;
2092                                 item_type = tvb_get_guint8(tvb, offset);
2093                                 n = tvb_get_ntohs(tvb, offset+1);
2094                                 ecmp_file_list_tree = proto_tree_add_subtree_format(ecmp_file_list_no_tree, tvb, offset, n+2, ett_ecmp_file_list, &ecmp_file_list_item2, "File %d:", a+1);
2095                                 item_type_item = proto_tree_add_item(ecmp_file_list_tree, hf_ecmp_item_type, tvb, offset, 1, ENC_NA);
2096
2097                                 switch(item_type)
2098                                 {
2099                                         case 0: /*if item type is "file"*/
2100                                                 proto_tree_add_item(ecmp_file_list_tree, hf_ecmp_file_name, tvb, offset+1, 2, ENC_BIG_ENDIAN|ENC_ASCII);
2101                                                 break;
2102
2103                                         case 1: /*if item type is "directory"*/
2104                                                 proto_tree_add_item(ecmp_file_list_tree, hf_ecmp_directory, tvb, offset+1, 2, ENC_BIG_ENDIAN|ENC_ASCII);
2105                                                 break;
2106
2107                                         default: /*if item type is not "file" or "directory"*/
2108                                                 expert_add_info(pinfo, item_type_item, &ei_ecmp_item_type);
2109                                                 break;
2110                                 }
2111                                 offset+= n;
2112
2113                                 proto_item_set_len(ecmp_file_list_item2, offset-start_offset2);
2114                         }
2115
2116                         proto_item_set_len(ecmp_file_list_item, (offset+1)-start_offset);
2117                 }
2118         }
2119 }
2120
2121
2122 /*a function to dissect "FileExists" command*/
2123 static void file_exists(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2124 {
2125         if (request) {
2126                 /*display filename*/
2127                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_name, tvb, offset, 2, ENC_BIG_ENDIAN|ENC_ASCII);
2128         } else {
2129                 /*display file status*/
2130                 proto_tree_add_item(ecmp_tree, hf_ecmp_file_status, tvb, offset, 1, ENC_BIG_ENDIAN);
2131         }
2132 }
2133
2134
2135 static int add_cyclic_setup_attributes(packet_info* pinfo, int offset, guint16 length, tvbuff_t *tvb, proto_tree* ecmp_tree)
2136 {
2137         proto_item *cyclic_setup_attributes_root = NULL;
2138         proto_item *cyclic_setup_attributes = NULL;
2139         proto_item *cyclic_setup_attrib_item_root = NULL;
2140         proto_tree *cyclic_setup_attrib_item = NULL;
2141         guint8 attrib;
2142
2143         /* num attribs */
2144         cyclic_setup_attributes_root = proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_attrib_count, tvb, offset++, 1, ENC_BIG_ENDIAN);
2145
2146         /* attrib list */
2147         cyclic_setup_attributes = proto_item_add_subtree(cyclic_setup_attributes_root, ett_cyclic_setup_attribs);
2148
2149         while (offset < length) {
2150                 attrib = tvb_get_guint8(tvb, offset);
2151                 cyclic_setup_attrib_item_root = proto_tree_add_item(cyclic_setup_attributes, hf_ecmp_cyclic_setup_attrib, tvb, offset++, 1, ENC_BIG_ENDIAN);
2152
2153                 cyclic_setup_attrib_item = proto_item_add_subtree(cyclic_setup_attrib_item_root, ett_cyclic_setup_attrib_item);
2154
2155                 switch (attrib) {
2156                         case 3: /* mec offset */
2157                         {
2158                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_mec_offset, tvb, offset, 4, ENC_BIG_ENDIAN);
2159                                 offset += 4;
2160                         }
2161                         break;
2162
2163                         case 4: /* sample period */
2164                         case 5: /* mec delay */
2165                         {
2166                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_sample_period, tvb, offset, 8, ENC_BIG_ENDIAN);
2167                                 offset += 8;
2168                         }
2169                         break;
2170
2171                         case 7: /* rx timeout */
2172                         {
2173                                 /* tout */
2174                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_timeout, tvb, offset, 4, ENC_BIG_ENDIAN);
2175                                 offset += 4;
2176
2177                                 /* action */
2178                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_action, tvb, offset++, 1, ENC_NA);
2179
2180                                 /* event dest */
2181                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_event_destination, tvb, offset++, 1, ENC_NA);
2182
2183                                 /* event */
2184                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_event, tvb, offset++, 1, ENC_NA);
2185
2186                         }
2187                         break;
2188
2189                         case 8: /* rx late handler */
2190                         {
2191                                 /* action */
2192                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_late_handler_action, tvb, offset++, 1, ENC_NA);
2193
2194                                 /* event dest */
2195                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_late_handler_event_destination, tvb, offset++, 1, ENC_NA);
2196
2197                                 /* event */
2198                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_rx_late_handler_event, tvb, offset++, 1, ENC_NA);
2199                         }
2200                         break;
2201
2202                         case 9: /* transport addr */
2203                         {
2204                                 /* scheme */
2205                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_transport_addr_scheme, tvb, offset++, 1, ENC_NA);
2206
2207                                 /* todo - make this check the scheme is actually 0! */
2208
2209                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_transport_addr, tvb, offset, 4, ENC_BIG_ENDIAN);
2210                                 offset += 4;
2211                         }
2212                         break;
2213
2214                         case 12: /* mapping item */
2215                         {
2216                                 guint8 addrScheme;
2217
2218                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_mapping_item_offset, tvb, offset++, 1, ENC_NA);
2219
2220                                 addrScheme = tvb_get_guint8(tvb, offset);
2221                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_mapping_item_scheme, tvb, offset++, 1, ENC_NA);
2222
2223                                 offset = get_address_scheme(pinfo, offset, addrScheme, tvb, cyclic_setup_attrib_item);
2224
2225                                 /* todo - should this be done in the last function itself??? */
2226                                 offset++;
2227                         }
2228                         break;
2229
2230                         case 0: /* state */
2231                         case 1: /* rx/tx */
2232                         case 2: /* synchronised */
2233                         case 6: /* data change */
2234                         case 10: /* max mappings */
2235                         case 11: /* num mappings */
2236                         case 13: /* saveable */
2237                         case 128: /* max rx links */
2238                         case 129: /* max tx links */
2239                         case 130: /* max mappings per link */
2240                         case 131: /* max sync rx links */
2241                         case 132: /* max sync tx links */
2242                         case 133: /* max mappings per sync link */
2243                         case 134: /* process at queue depth */
2244                         {
2245                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_setup_attribute, tvb, offset++, 1, ENC_NA);
2246                         }
2247                         break;
2248
2249                         case 135: /* mec period */
2250                         {
2251                                 proto_tree_add_item(cyclic_setup_attrib_item, hf_ecmp_mec_period, tvb, offset, 4, ENC_BIG_ENDIAN);
2252                                 offset += 4;
2253                         }
2254                         break;
2255
2256                         default:
2257                         break;
2258
2259                 } /* attribute switch */
2260         } /* loop through list */
2261
2262         return offset;
2263 }
2264
2265
2266 static void cyclic_setup(packet_info* pinfo, guint16 offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2267 {
2268         guint16 length = 0;
2269         proto_item* cyclic_setup_attributes_root = NULL;
2270         proto_item* cyclic_setup_attributes = NULL;
2271         guint8 Mode;
2272
2273         length = tvb_reported_length(tvb);
2274
2275         /* if a request add the check output flag */
2276         if (request) {
2277                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_linkno, tvb, offset++, 1, ENC_BIG_ENDIAN);
2278
2279                 Mode = tvb_get_guint8(tvb, offset);
2280                 proto_tree_add_uint(ecmp_tree, hf_ecmp_cyclic_setup_mode, tvb, offset++, 1, Mode);
2281
2282                 switch (Mode) {
2283                         case 0: /* create  */
2284                         case 10: /* set  */
2285                         {
2286                                 /* link direction */
2287                                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_dir, tvb, offset++, 1, ENC_BIG_ENDIAN);
2288
2289                                 /* add the attributesd as a tree */
2290                                 add_cyclic_setup_attributes(pinfo, offset, length, tvb, ecmp_tree);
2291                         }
2292                         break;
2293
2294                         case 1: /* edit */
2295                         case 2: /* finalise */
2296                         case 3: /* delete */
2297                         case 4: /* exist */
2298                                 /* link direction */
2299                                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_dir, tvb, offset++, 1, ENC_BIG_ENDIAN);
2300                         break;
2301
2302                         case 5: /* list */
2303                                 /* tx/rx bits */
2304                                 proto_tree_add_item(ecmp_tree, hf_ecmp_data, tvb, offset, tvb_reported_length_remaining(tvb, offset), ENC_NA);
2305                         break;
2306
2307                         case 11: /* get */
2308                         case 6: /* info */
2309                         {
2310                                 if (Mode == 11) {
2311                                         /* link dir */
2312                                         proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_dir, tvb, offset++, 1, ENC_BIG_ENDIAN);
2313                                 }
2314
2315                                 /* num attribs */
2316                                 cyclic_setup_attributes_root = proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_attrib_count, tvb, offset++, 1, ENC_BIG_ENDIAN);
2317
2318                                 /* attrib list */
2319                                 cyclic_setup_attributes = proto_item_add_subtree(cyclic_setup_attributes_root, ett_cyclic_setup_attribs);
2320                                 while (offset < length) {
2321                                         proto_tree_add_item(cyclic_setup_attributes, hf_ecmp_cyclic_setup_attrib, tvb, offset++, 1, ENC_BIG_ENDIAN);
2322                                 }
2323                         }
2324                         break;
2325
2326                         case 12: /* get mappings */
2327                         {
2328                                 /* link dir */
2329                                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_dir, tvb, offset++, 1, ENC_BIG_ENDIAN);
2330
2331                                 /* max mappings */
2332                                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_max_mappings, tvb, offset++, 1, ENC_NA);
2333
2334                                 /* start offset */
2335                                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_start_offset, tvb, offset++, 1, ENC_NA);
2336                         }
2337                         break;
2338
2339                         default:
2340                                 /* display payload as hex bytes */
2341                                 proto_tree_add_item(ecmp_tree, hf_ecmp_data, tvb, offset, tvb_reported_length_remaining(tvb, offset), ENC_NA);
2342                         break;
2343                 }
2344         } else {
2345                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_rsp_status, tvb, offset++, 1, ENC_BIG_ENDIAN);
2346                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_rsp_err_idx, tvb, offset++, 1, ENC_BIG_ENDIAN);
2347
2348                 Mode = tvb_get_guint8(tvb, offset);
2349                 proto_tree_add_uint(ecmp_tree, hf_ecmp_cyclic_setup_mode, tvb, offset++, 1, Mode);
2350
2351                 switch (Mode) {
2352                         case 0: /* create */
2353                         case 1: /* edit */
2354                         case 2: /* finalise */
2355                         case 3: /* delete */
2356                                 /* no mode specific data */
2357                         break;
2358
2359                         case 4: /* exist */
2360                                 proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_link_exists, tvb, offset++, 1, ENC_BIG_ENDIAN);
2361                         break;
2362
2363                         case 5: /* list */
2364                         {
2365                                 guint8 txCount, rxCount, linkno;
2366
2367                                 /* num attribs */
2368                                 txCount = tvb_get_guint8(tvb, offset);
2369                                 cyclic_setup_attributes_root = proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_tx_count, tvb, offset++, 1, ENC_NA);
2370
2371                                 /* link list */
2372                                 cyclic_setup_attributes = proto_item_add_subtree(cyclic_setup_attributes_root, ett_cyclic_setup_attribs);
2373                                 while (txCount > 0) {
2374                                         linkno = tvb_get_guint8(tvb, offset);
2375                                         proto_tree_add_uint(cyclic_setup_attributes, hf_ecmp_cyclic_setup_linkno, tvb, offset++, 1, linkno);
2376                                         txCount--;
2377                                 }
2378
2379                                 rxCount = tvb_get_guint8(tvb, offset);
2380                                 cyclic_setup_attributes_root = proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_rx_count, tvb, offset++, 1, ENC_NA);
2381
2382                                 /* link list */
2383                                 cyclic_setup_attributes = proto_item_add_subtree(cyclic_setup_attributes_root, ett_cyclic_setup_attribs);
2384                                 while (rxCount > 0) {
2385                                         linkno = tvb_get_guint8(tvb, offset);
2386                                         proto_tree_add_uint(cyclic_setup_attributes, hf_ecmp_cyclic_setup_linkno, tvb, offset++, 1, linkno);
2387                                         rxCount--;
2388                                 }
2389                         }
2390                         break;
2391
2392                         case 10: /* set */
2393                         {
2394                                 /* num attribs */
2395                                 cyclic_setup_attributes_root = proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_setup_attrib_count, tvb, offset++, 1, ENC_BIG_ENDIAN);
2396
2397                                 /* attrib list */
2398                                 cyclic_setup_attributes = proto_item_add_subtree(cyclic_setup_attributes_root, ett_cyclic_setup_attribs);
2399                                 while (offset < length) {
2400                                         proto_tree_add_item(cyclic_setup_attributes, hf_ecmp_cyclic_setup_attrib, tvb, offset++, 1, ENC_BIG_ENDIAN);
2401                                 }
2402                         }
2403                         break;
2404
2405                         case 11: /* get */
2406                         case 12: /* get mappings */
2407                         case 6: /* info */
2408                                 /* add the attributesd as a tree */
2409                                 add_cyclic_setup_attributes(pinfo, offset, length, tvb, ecmp_tree);
2410                         break;
2411
2412                         default:
2413                                 /* display payload as hex bytes */
2414                                 proto_tree_add_item(ecmp_tree, hf_ecmp_data, tvb, offset, tvb_reported_length_remaining(tvb, offset), ENC_NA);
2415                         break;
2416                 }
2417         }
2418 }
2419
2420
2421 /*a function to dissect "ProgramStatus" command  */
2422 static void program_status(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2423 {
2424 /*  Description:function to dissect Program Status command              */
2425 /*                                                                      */
2426 /*  Inputs:                                                             */
2427 /*    offset - current offset of pointer within the ECMP frame          */
2428 /*    command_value - function code of ECMP message                     */
2429 /*    request - (1 = query, 0 = response)                               */
2430 /*    tvb - Wireshark protocol tree                                     */
2431 /*    ecmp_tree - Wireshark protocol tree                               */
2432 /*    tree - Wireshark protocol tree                                    */
2433 /*                                                                      */
2434 /*  Returns: nothing                                                    */
2435 /*                                                                      */
2436 /*  Notes: for queries, the "offset" points to the "target".            */
2437 /*         for responses, the "offset" points to the "status".          */
2438 /*                                                                      */
2439 /*  sample ECMP Request Frame                                           */
2440 /*  0x61 - request code  (program control)                              */
2441 /*  0x00 - option terminator                                            */
2442 /*  0x00 - target   (0 = default program) <======== offset              */
2443 /*                                                                      */
2444 /*  sample ECMP Response Frame                                          */
2445 /*  0xE1 - response code  (program control)                             */
2446 /*  0x00 - option terminator                                            */
2447 /*  0x01 - running state  (0=Stopped, 1=Running ... ) <======== offset  */
2448 /*  0x00 - additional items                                             */
2449
2450         proto_item*             ecmp_program_status_message_tree = NULL;
2451
2452         /* differentiate between ECMP query and response  */
2453         if (request) {
2454                 /*display the program control details sub-tree  */
2455                 ecmp_program_status_message_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 1, ett_ecmp_program_status_message, NULL, "Program Status: (Query)");
2456
2457                 /* read the target  */
2458                 proto_tree_add_item(ecmp_program_status_message_tree, hf_ecmp_program_status_target, tvb, offset, 1, ENC_NA);
2459         } else {
2460                 /*display the program status details sub-tree  */
2461                 ecmp_program_status_message_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 2, ett_ecmp_program_status_message, NULL, "Program Status: (Response)");
2462
2463                 /* read and display the Status */
2464                 proto_tree_add_item(ecmp_program_status_message_tree, hf_ecmp_program_status_status, tvb, offset, 1, ENC_NA);
2465                 offset += 1;
2466
2467                 /* read and display the Additional Items */
2468                 proto_tree_add_item(ecmp_program_status_message_tree, hf_ecmp_program_status_additional_items, tvb, offset, 1, ENC_NA);
2469         }
2470 }
2471
2472
2473 /*a function to dissect "ProgramControl" command  */
2474 static void program_control(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2475 {
2476 /*  Description:function to dissect Program Control command             */
2477 /*                                                                      */
2478 /*  Inputs:                                                             */
2479 /*    offset - current offset of pointer within the ECMP frame          */
2480 /*    command_value - function code of ECMP message                     */
2481 /*    request - (1 = query, 0 = response)                               */
2482 /*    tvb - Wireshark protocol tree                                     */
2483 /*    ecmp_tree - Wireshark protocol tree                               */
2484 /*    tree - Wireshark protocol tree                                    */
2485 /*                                                                      */
2486 /*  Returns: nothing                                                    */
2487 /*                                                                      */
2488 /* Notes: for queries, the "offset" points to the "target".              */
2489 /*         for responses, the "offset" points to the "status".          */
2490 /*                                                                      */
2491 /*  sample ECMP Request Frame                                           */
2492 /*  0x60 - request code  (program control)                              */
2493 /*  0x00 - option terminator                                            */
2494 /*  0x00 - target   (0 = default program) <======== offset              */
2495 /*  0x01 - command  (1 = start the program)                             */
2496 /*  0x00 - sub command                                                  */
2497 /*                                                                      */
2498 /*  sample ECMP Response Frame                                          */
2499 /*  0xE0 - response code  (program control)                             */
2500 /*  0x00 - option terminator                                            */
2501 /*  0x00 - status  (0 = OK)  <======== offset                           */
2502 /*                                                                      */
2503
2504         proto_item*             ecmp_program_control_message_tree = NULL;
2505
2506         /* differentiate between ECMP query and response  */
2507         if (request) {
2508                 /*display the program control details sub-tree  */
2509                 ecmp_program_control_message_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 3, ett_ecmp_program_control_message, NULL, "Program Control: (Query)");
2510
2511                 /* read the target  */
2512                 proto_tree_add_item(ecmp_program_control_message_tree, hf_ecmp_program_control_target, tvb, offset, 1, ENC_NA);
2513                 offset += 1;
2514
2515                 /* read the command  */
2516                 proto_tree_add_item(ecmp_program_control_message_tree, hf_ecmp_program_control_command, tvb, offset, 1, ENC_NA);
2517                 offset += 1;
2518
2519                 /* read the subcommand  */
2520                 proto_tree_add_item(ecmp_program_control_message_tree, hf_ecmp_program_control_sub_command, tvb, offset, 1, ENC_NA);
2521         } else {
2522                 /*display the program control details sub-tree  */
2523                 ecmp_program_control_message_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 1, ett_ecmp_program_control_message, NULL, "Program Control: (Response)");
2524
2525                 /* read and display the Status */
2526                 proto_tree_add_item(ecmp_program_control_message_tree, hf_ecmp_program_control_status, tvb, offset, 1, ENC_NA);
2527         }
2528 }
2529
2530
2531 /*a function to dissect "ModbusPDU" command  */
2532 static void modbus_pdu(int offset, gboolean request, tvbuff_t *tvb, packet_info* pinfo, proto_tree* ecmp_tree)
2533 {
2534 /*  Description:function to dissect Modbus PDU ECMP transactions        */
2535 /*                                                                      */
2536 /*  Inputs:                                                             */
2537 /*    offset - current offset of pointer within the ECMP frame          */
2538 /*    command_value - function code of ECMP message                     */
2539 /*    request - (1 = query, 0 = response)                               */
2540 /*    tvb - Wireshark protocol tree                                     */
2541 /*    ecmp-tree - Wireshark protocol tree                               */
2542 /*    tree - Wireshark protocol tree                                    */
2543 /*                                                                      */
2544 /*  Returns: nothing                                                    */
2545 /*                                                                      */
2546 /*  Notes: for queries, the "offset" points to the "size".               */
2547 /*         for responses, the "offset" points to the size.              */
2548 /*                                                                      */
2549 /*  sample ECMP Request Frame (Read Holding Registers)                  */
2550 /*  0x74 -  request code  (ModbusMaster)                                */
2551 /*  0x00 - option terminator                                            */
2552 /*  0x00 - size                             msb <======== offset        */
2553 /*  0x05 - size                             lsb                         */
2554 /*  0x03 - function code - read hold reg                                */
2555 /*  0x07 - register address (#20.021)       msb                         */
2556 /*  0xE4 - register address                 lsb                         */
2557 /*  0x00 - number registers                 msb                         */
2558 /*  0x03 - number registers                 lsb                         */
2559 /*                                                                      */
2560 /*  sample ECMP Response Frame                                          */
2561 /*  0xF4 - response code  (ModbusMaster)                                */
2562 /*  0x00 - option terminator                                            */
2563 /*  0x00 - size                             msb <======== offset        */
2564 /*  0x08 - size                             lsb                         */
2565 /*  0x03 - function code - read hold reg                                */
2566 /*  0x06 - byte count                                                   */
2567 /*  0x30 - register #2021 value 12345       msb                         */
2568 /*  0x39 - register #2021 value             lsb                         */
2569 /*  0x03 - register #2022 value  787        msb                         */
2570 /*  0x13 - register #2022 value             lsb                         */
2571 /*  0x00 - register #2023 value  100        msb                         */
2572 /*  0x64 - register #2023 value             lsb                         */
2573
2574         tvbuff_t*               next_tvb;
2575         guint16                 size = 0; /* from Modbus TCP/IP spec: number of bytes that follow */
2576         int packet_type;
2577
2578         /* differentiate between ECMP query and response  */
2579         if (request) {
2580                 /* read and display the Size  */
2581                 size = tvb_get_ntohs(tvb, offset);
2582                 proto_tree_add_item(ecmp_tree, hf_ecmp_modbus_pdu_size, tvb, offset, 2, ENC_BIG_ENDIAN);
2583                 offset += 2;
2584
2585                 /* keep packet context */
2586                 packet_type = QUERY_PACKET;
2587                 next_tvb = tvb_new_subset_length(tvb, offset, size);
2588                 call_dissector_with_data(modbus_handle, next_tvb, pinfo, ecmp_tree, &packet_type);
2589
2590         } else {
2591                 /* read and display the Size  */
2592                 size = tvb_get_ntohs(tvb, offset);
2593                 proto_tree_add_item(ecmp_tree, hf_ecmp_modbus_pdu_size, tvb, offset, 2, ENC_BIG_ENDIAN);
2594                 offset += 2;
2595
2596                 packet_type = RESPONSE_PACKET;
2597                 next_tvb = tvb_new_subset_length(tvb, offset, size);
2598                 call_dissector_with_data(modbus_handle, next_tvb, pinfo, ecmp_tree, &packet_type);
2599         }
2600 }
2601
2602
2603 /*a function to dissect "Interrogate" command  */
2604 static void interrogate(packet_info* pinfo, int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2605 {
2606 /*  Description:  function to dissect Interrogate command               */
2607 /*                                                                      */
2608 /*  Inputs:                                                             */
2609 /*    offset - current offset of pointer within the ECMP frame          */
2610 /*    request - (1 = query, 0 = response)                               */
2611 /*    tvb - rather complex structure that has the frame data            */
2612 /*    ecmp-tree - Wireshark protocol tree                               */
2613 /*                                                                      */
2614 /*  Returns: nothing                                                    */
2615 /*                                                                      */
2616 /*  Notes: for queries, the "offset" points to the "item type".          */
2617 /*         for responses, the "offset" points to the "item type".       */
2618 /*                                                                      */
2619 /*  sample ECMP Request Frame                                           */
2620 /*  0x02 - request code  (interrogate)                                  */
2621 /*  0x00 - option terminator                                            */
2622 /*  0x00 - item type (0=ECMP command, 1=ECMP option)  <==== offset      */
2623 /*  0x05 - count  (number of commands/options to follow)                */
2624 /*  0x10 - item code #1  ECMP Read command                              */
2625 /*  0x11 - item code #2  ECMP ReadWithType command                      */
2626 /*  0x12 - item code #3  ECMP Write command                             */
2627 /*  0x13 - item code #4  ECMP ObjectInfo command                        */
2628 /*  0x14 - item code #5  ECMP GetNextObject command                     */
2629 /*                                                                      */
2630 /*  sample ECMP Response Frame                                          */
2631 /*  0x82 - response code  (program control)                             */
2632 /*  0x00 - option terminator                                            */
2633 /*  0x00 - item type (0=ECMP command, 1=ECMP option)  <==== offset      */
2634 /*  0x05 - count  (number of commands/options to follow)                */
2635 /*  0x10 - item code #1                                                 */
2636 /*  0x01 - supported    (ECMP Read command)                             */
2637 /*  0x11 - item code #2                                                 */
2638 /*  0x01 - supported    (ECMP ReadWithType command)                     */
2639 /*  0x12 - item code #3                                                 */
2640 /*  0x01 - supported    (ECMP Write command)                            */
2641 /*  0x13 - item code #4                                                 */
2642 /*  0x01 - supported    (ECMP ObjectInfo command)                       */
2643 /*  0x14 - item code #5                                                 */
2644 /*  0x01 - supported    (ECMP GetNextObject command)                    */
2645 /*                                                                      */
2646 /*                                                                      */
2647 /*  Item Type: 0 = ECMP command                                         */
2648 /*             1 = ECMP option  (not currently implemented)             */
2649 /*                                                                      */
2650 /*  Item Code: 0 .. 0x7F for commands                                   */
2651 /*             0 .. 2    for options                                    */
2652 /*                                                                      */
2653 /*  Item Support:  0 = not supported                                    */
2654 /*                 1 = supported                                        */
2655 /*                                                                      */
2656
2657
2658         const guint8 interrogate_type_command = 0;
2659
2660         proto_tree*             ecmp_interrogate_message_tree = NULL, *ecmp_interrogate_tree;
2661         proto_item*             ecmp_interrogate_message_item = NULL;
2662         guint8                  item_type = 0; /* 0=ECMP command,  1=ECMP option  */
2663         guint8                  command_req = 0; /* ECMP command  */
2664         guint8                  supported = 0; /* ECMP command support status: 1=supported,  0=not supported  */
2665         guint32                 count = 0; /* number of ECMP commands to be checked  */
2666         guint32                 j; /* loop counter  */
2667
2668
2669         /* differentiate between ECMP query and response  */
2670         if (request) {
2671
2672                 /* identify the ECMP command we're dissecting  */
2673                 ecmp_interrogate_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 2, ett_ecmp_interrogate_message, NULL, "Interrogate: (Query)");
2674
2675                 /* read the item_type (command/option setting)  */
2676                 item_type = tvb_get_guint8(tvb, offset);
2677                 proto_tree_add_item(ecmp_interrogate_tree, hf_ecmp_interrogate_item_type, tvb, offset, 1, ENC_NA);
2678                 offset += 1;
2679
2680                 /* read the count  */
2681                 count = tvb_get_guint8(tvb, offset);
2682                 proto_tree_add_item(ecmp_interrogate_tree, hf_ecmp_interrogate_count, tvb, offset, 1, ENC_NA);
2683                 offset += 1;
2684
2685                 /*create the interrogate details sub-tree  */
2686                 ecmp_interrogate_message_tree = proto_tree_add_subtree(ecmp_interrogate_tree, tvb, offset, count, ett_ecmp_interrogate_message, &ecmp_interrogate_message_item, "ECMP Commands to be Checked");
2687
2688                 /* display the item_codes (commands to be checked)  */
2689                 if (item_type == interrogate_type_command) {
2690                         /* loop on the commands  */
2691                         for (j = 0; j < count; j++) {
2692
2693                                 /* display the commands to be checked  */
2694                                 proto_tree_add_item(ecmp_interrogate_message_tree, hf_ecmp_interrogate_command, tvb, offset, 1, ENC_NA);
2695                                 offset += 1;
2696                         }
2697                         proto_item_set_len(ecmp_interrogate_message_item, count);
2698
2699                 } else {
2700                         expert_add_info(pinfo, ecmp_interrogate_message_item, &ei_ecmp_options_not_implemented);
2701                 }
2702
2703         } else {
2704                 /* identify the ECMP command we're dissecting  */
2705                 ecmp_interrogate_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 2, ett_ecmp_interrogate_message, NULL, "Interrogate: (Response)");
2706
2707                 /* read the item_type (command/option setting)  */
2708                 item_type = tvb_get_guint8(tvb, offset);
2709                 offset += 1;
2710
2711                 /* read the count  */
2712                 count = tvb_get_guint8(tvb, offset);
2713                 offset += 1;
2714
2715                 /* display the item_codes (commands to be checked)  */
2716                 if (item_type == interrogate_type_command) {
2717
2718                         /*create the interrogate details sub-tree  */
2719                         ecmp_interrogate_message_tree = proto_tree_add_subtree(ecmp_interrogate_tree, tvb, offset, 1, ett_ecmp_interrogate_message, &ecmp_interrogate_message_item, "ECMP Commands Supported");
2720
2721                         /* loop on the commands  */
2722                         for (j = 0; j < count; j++) {
2723                                 /* get the command code  */
2724                                 command_req = tvb_get_guint8(tvb, offset);
2725                                 offset += 1;
2726
2727                                 /* get the support status  */
2728                                 supported = tvb_get_guint8(tvb, offset);
2729                                 offset += 1;
2730
2731                                 /* display if the command is supported  */
2732                                 proto_tree_add_uint_format(ecmp_interrogate_message_tree, hf_ecmp_interrogate_command, tvb, offset, 1, command_req, "%s: %s",
2733                                                         try_val_to_str(command_req, command_vals),
2734                                                         try_val_to_str(supported, Interrogate_support_state));
2735                         }
2736
2737                 } else {
2738
2739                         expert_add_info(pinfo, ecmp_interrogate_message_item, &ei_ecmp_options_not_implemented);
2740                 }
2741         }
2742 }
2743
2744
2745 static void tunnel_frame(int offset, gboolean request, tvbuff_t *tvb, proto_tree* ecmp_tree)
2746 {
2747         proto_tree_add_item(ecmp_tree, hf_ecmp_tunnel_control, tvb, offset, 1, ENC_BIG_ENDIAN);
2748         proto_tree_add_item(ecmp_tree, hf_ecmp_tunnel_start_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
2749         proto_tree_add_item(ecmp_tree, hf_ecmp_tunnel_end_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
2750
2751         /* if a request add the check output flag */
2752         if (request) {
2753                 proto_tree_add_item(ecmp_tree, hf_ecmp_tunnel_check_output_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
2754         }
2755
2756         offset+= 1;
2757
2758         /* Payload length */
2759         proto_tree_add_item(ecmp_tree, hf_ecmp_tunnel_size, tvb, offset, 2, ENC_BIG_ENDIAN);
2760         offset+= 2;
2761
2762         proto_tree_add_item(ecmp_tree, hf_ecmp_data, tvb, offset, tvb_reported_length_remaining(tvb, offset), ENC_NA);
2763         /*offset = tvb_reported_length(tvb);*/
2764 }
2765
2766
2767 /*  dissect_ecmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2768 *   -----------------------------------------------------------------
2769 *
2770 *   Purpose:  Wireshark dissector for Emerson Control Techniques ECMP protocol
2771 *
2772 *
2773 *   Inputs:     tvbuff_t        *tvb        - complex buffer structure holding the packet's bytes
2774 *               packet_info     *pinfo      - structure holding information about the packet
2775 *               proto_tree      *tree       - pointer to top-level tree (print lines)
2776 *
2777 *   Outputs:    none
2778 *
2779 *
2780 *    Notes:      if tree = NULL, packet capture is running and dissector will only write into the Summary Line (Info Field)
2781 *
2782 *               if tree is non-NULL, packet capture has stopped because a packet has been selected (clicked)
2783 *               In this case, we will display quite a bit of additional information about the packet.
2784 *
2785 *
2786 *               To inspect the frame buffer (very difficult using the *tvb pointer), it's best to add this little debug
2787 *               code snippet at the top of the program to copy the frame buffer into an array that you can inspect.
2788 *
2789 *                   static guint8  jimbuf[512];                     // temp buffer for current frame data
2790 *                   static gint    lenframe = 0;                    // num bytes in the frame
2791 *                   static gint    j = 0;                           // loop counter
2792 *                   static gint16  saved_offset = 0;                // saves offset for later restoration
2793 *
2794 *                   lenframe = tvb_captured_length(tvb);            // get the length of the frame
2795 *                   saved_offset = offset;                          // temporarily save the "offset"
2796 *
2797 *                   for (j = 0; j < lenframe; j++) {                // loop to copy the frame buffer
2798 *                       jimbuf[j] = tvb_get_guint8(tvb, offset);    // Wireshark function to read the frame buffer
2799 *                       offset += 1;
2800 *                   }
2801 *                   offset = saved_offset;                          // restore the offset
2802 *
2803 *
2804 *   Authors:  Sarah Bouremoum, Jim Lynch, Luke Orehawa, Others
2805 */
2806
2807 static int dissect_ecmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
2808 {
2809         /* Initialize the items and trees*/
2810         proto_item              *ecmp_item = NULL;
2811         proto_item              *ecmp_transaction_id_item = NULL;
2812         proto_item              *ecmp_chunk_id_item = NULL;
2813         proto_tree              *ecmp_tree = NULL;
2814
2815         /*initialise the values to be used */
2816         guint8  command_value = 0;
2817         gboolean request;
2818         guint8  transaction_id_value = 0;
2819         int         offset = 0; /* index used to read data from the buffer*/
2820         gint    framelen = 0; /* number of bytes in the frame   */
2821
2822         /* note length of the UDP frame  */
2823         framelen = tvb_reported_length(tvb);
2824
2825         if (framelen < ecmp_min_packet_size) {
2826                 return 0;
2827         }
2828
2829         /* this code block processes ECMP TCP messages (most of them)  */
2830         col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_TAG_ECMP);
2831         col_clear(pinfo->cinfo,COL_INFO);
2832
2833
2834         /*declaration of variables*/
2835         offset = 4;
2836
2837         /*display the first line of the tree (ECMP data)*/
2838         ecmp_item = proto_tree_add_item(tree, proto_ecmp, tvb, 0, -1, ENC_NA);
2839         ecmp_tree = proto_item_add_subtree(ecmp_item, ett_ecmp);
2840
2841         /* display the information for the destination address */
2842         offset = add_transport_layer_frame(offset, tvb, ecmp_tree, hf_ecmp_destination_address);
2843
2844         /* display the information for the source address */
2845         offset = add_transport_layer_frame(offset, tvb, ecmp_tree, hf_ecmp_source_address);
2846
2847         /*display the transaction ID*/
2848         ecmp_transaction_id_item = proto_tree_add_item(ecmp_tree, hf_ecmp_transaction_id, tvb, offset, 1, ENC_BIG_ENDIAN );
2849         transaction_id_value = tvb_get_guint8(tvb, offset);
2850
2851         if(transaction_id_value == 0) {
2852                 proto_item_append_text(ecmp_transaction_id_item, "%s", " -> Not initiated by Request");
2853         }
2854         offset++;
2855
2856         request = ((tvb_get_guint8(tvb, offset+2) & 0x80) == 0);
2857         if (request) {
2858                 /* Calls the function to display the Response size */
2859                 offset = get_response_size(offset, tvb, ecmp_tree);
2860
2861                 /* Calls the function to display the command and request/response */
2862                 offset = add_command_codes(pinfo, offset, tvb, ecmp_tree, transaction_id_value, &command_value);
2863
2864                 /* Calls the function to display the option codes and its data */
2865                 offset = add_option_codes(offset, pinfo, tvb, ecmp_tree);
2866
2867                 /* up til here all code for the request should be the same */
2868                 switch(command_value)
2869                 {
2870                         case ECMP_COMMAND_IDENTIFY:
2871                                 /*Calls a method to display the attributes and its data */
2872                                 add_attributes(pinfo, offset, tvb, ecmp_tree, request);
2873                                 break;
2874                         case ECMP_COMMAND_INFO:
2875                                 /* Info command is just the request code, nothing else to display  */
2876                                 proto_tree_add_item(ecmp_tree, hf_ecmp_info_command, tvb, 0, -1, ENC_NA);
2877                                 /*do nothing, no more data is present */
2878                                 break;
2879                         case ECMP_COMMAND_INTERROGATE:
2880                                 interrogate(pinfo, offset, request, tvb, ecmp_tree);
2881                                 break;
2882                         case ECMP_COMMAND_READ:
2883                                 get_parameter_definitions(pinfo, offset, command_value, tvb, ecmp_tree);
2884                                 break;
2885                         case ECMP_COMMAND_READWITHTYPE:
2886                                 get_parameter_definitions(pinfo, offset, command_value, tvb, ecmp_tree);
2887                                 break;
2888                         case ECMP_COMMAND_WRITE:
2889                                 get_parameter_definitions(pinfo, offset, command_value, tvb, ecmp_tree);
2890                                 break;
2891                         case ECMP_COMMAND_OBJECTINFO:
2892                                 get_parameter_definitions(pinfo, offset, command_value, tvb, ecmp_tree);
2893                                 break;
2894                         case ECMP_COMMAND_GETNEXTOBJECTS:
2895                                 get_parameter_definitions(pinfo, offset, command_value, tvb, ecmp_tree);
2896                                 break;
2897                         case ECMP_COMMAND_FILEOPEN:
2898                                 file_open(offset, request, tvb, ecmp_tree);
2899                                 break;
2900                         case ECMP_COMMAND_FILEREAD:
2901                                 file_read(offset, request, tvb, ecmp_tree);
2902                                 break;
2903                         case ECMP_COMMAND_FILEWRITE:
2904                                 file_write(offset, request, tvb, ecmp_tree);
2905                                 break;
2906                         case ECMP_COMMAND_FILECLOSE:
2907                                 file_close(offset, request, tvb, ecmp_tree);
2908                                 break;
2909                         case ECMP_COMMAND_FILEINFO:
2910                                 file_info(pinfo, offset, request, tvb, ecmp_tree);
2911                                 break;
2912                         case ECMP_COMMAND_FILEDELETE:
2913                                 file_state_delete(offset, request, tvb, ecmp_tree);
2914                                 break;
2915                         case ECMP_COMMAND_FILESTATE:
2916                                 file_state_delete(offset, request, tvb, ecmp_tree);
2917                                 break;
2918                         case ECMP_COMMAND_FILEPOS:
2919                                 file_pos(offset, request, tvb, ecmp_tree);
2920                                 break;
2921                         case ECMP_COMMAND_FILELIST:
2922                                 file_list(pinfo, offset, request, tvb, ecmp_tree);
2923                                 break;
2924                         case ECMP_COMMAND_FILEEXISTS:
2925                                 file_exists(offset, request, tvb, ecmp_tree);
2926                                 break;
2927                         case ECMP_COMMAND_CYCLICLINK:
2928                                 cyclic_setup(pinfo, offset, request, tvb, ecmp_tree);
2929                                 break;
2930                         case ECMP_COMMAND_PROGRAMCONTROL:
2931                                 program_control(offset, request, tvb, ecmp_tree);
2932                                 break;
2933                         case ECMP_COMMAND_PROGRAMSTATUS:
2934                                 program_status(offset, request, tvb, ecmp_tree);
2935                                 break;
2936                         case ECMP_COMMAND_CYCLICFRAME:
2937                                 add_cyclic_frame_query(offset, tvb, ecmp_tree);
2938                                 break;
2939                         case ECMP_COMMAND_TUNNELFRAME:
2940                                 tunnel_frame(offset, command_value, tvb, ecmp_tree);
2941                                 break;
2942                         case ECMP_COMMAND_MODBUSPDU:
2943                                 modbus_pdu(offset, request, tvb, pinfo, ecmp_tree);
2944                                 break;
2945                         default:
2946                                 proto_tree_add_expert(ecmp_tree, pinfo, &ei_ecmp_unknown_command, tvb, 0, -1);
2947                                 break;
2948                 }
2949
2950                 /* END of code to be modified */
2951         } else {
2952                 guint8 chunk_id_value = 0;
2953                 gint8 status_value = 0;
2954
2955                 status_value = tvb_get_gint8(tvb, offset); /*stores a signed value for status */
2956
2957                 proto_tree_add_item(ecmp_tree, hf_ecmp_status, tvb, offset, 1, ENC_BIG_ENDIAN);
2958
2959
2960                 if (status_value >= 0) {
2961                         offset++;
2962                         chunk_id_value = tvb_get_guint8(tvb, offset);
2963                         ecmp_chunk_id_item = proto_tree_add_item(ecmp_tree, hf_ecmp_chunk_id, tvb, offset, 1, ENC_BIG_ENDIAN);
2964
2965                         if(chunk_id_value == 0) {
2966                                 proto_item_append_text(ecmp_chunk_id_item, "%s", " -> Response is NOT Chunked");
2967                         }
2968
2969                         offset++;
2970
2971                         /* Calls the function to display the option codes */
2972                         offset = add_command_codes(pinfo, offset, tvb, ecmp_tree, transaction_id_value, &command_value);
2973
2974                         if ((status_value == 0) || (status_value == 1)) {
2975                                 /* Calls a method to display option codes */
2976                                 offset = add_option_codes(offset, pinfo, tvb, ecmp_tree);
2977
2978                                 /* up til here all code for the response should be the same */
2979                                 switch(command_value)
2980                                 {
2981                                         case ECMP_COMMAND_IDENTIFY:
2982                                                 /*Call a method to add category data */
2983                                                 offset = add_category_codes(offset, tvb, ecmp_tree);
2984                                                 /*Call a method to add attributes */
2985                                                 add_attributes(pinfo, offset, tvb, ecmp_tree, request);
2986                                                 break;
2987                                         case ECMP_COMMAND_INFO:
2988                                                 add_info_response(offset, tvb, ecmp_tree);
2989                                                 break;
2990                                         case ECMP_COMMAND_INTERROGATE:
2991                                                 interrogate(pinfo, offset, request, tvb, ecmp_tree);
2992                                                 break;
2993                                         case ECMP_COMMAND_READ:
2994                                                 get_parameter_responses(pinfo, offset, command_value, tvb, ecmp_tree);
2995                                                 break;
2996                                         case ECMP_COMMAND_READWITHTYPE:
2997                                                 get_parameter_responses(pinfo, offset, command_value, tvb, ecmp_tree);
2998                                                 break;
2999                                         case ECMP_COMMAND_WRITE:
3000                                                 get_parameter_responses(pinfo, offset, command_value, tvb, ecmp_tree);
3001                                                 break;
3002                                         case ECMP_COMMAND_OBJECTINFO:
3003                                                 get_object_info_response(pinfo, offset, tvb, ecmp_tree);
3004                                                 break;
3005                                         case ECMP_COMMAND_GETNEXTOBJECTS:
3006                                                 get_parameter_responses(pinfo, offset, command_value, tvb, ecmp_tree);
3007                                                 break;
3008                                         case ECMP_COMMAND_FILEOPEN:
3009                                                 file_open(offset, request, tvb, ecmp_tree);
3010                                                 break;
3011                                         case ECMP_COMMAND_FILEREAD:
3012                                                 file_read(offset, request, tvb, ecmp_tree);
3013                                                 break;
3014                                         case ECMP_COMMAND_FILEWRITE:
3015                                                 file_write(offset, request, tvb, ecmp_tree);
3016                                                 break;
3017                                         case ECMP_COMMAND_FILECLOSE:
3018                                                 file_close(offset, request, tvb, ecmp_tree);
3019                                                 break;
3020                                         case ECMP_COMMAND_FILEINFO:
3021                                                 file_info(pinfo, offset, request, tvb, ecmp_tree);
3022                                                 break;
3023                                         case ECMP_COMMAND_FILEDELETE:
3024                                                 file_state_delete(offset, request, tvb, ecmp_tree);
3025                                                 break;
3026                                         case ECMP_COMMAND_FILESTATE:
3027                                                 file_state_delete(offset, request, tvb, ecmp_tree);
3028                                                 break;
3029                                         case ECMP_COMMAND_FILEPOS:
3030                                                 file_pos(offset, request, tvb, ecmp_tree);
3031                                                 break;
3032                                         case ECMP_COMMAND_FILELIST:
3033                                                 file_list(pinfo, offset, request, tvb, ecmp_tree);
3034                                                 break;
3035                                         case ECMP_COMMAND_FILEEXISTS:
3036                                                 file_exists(offset, request, tvb, ecmp_tree);
3037                                                 break;
3038                                         case ECMP_COMMAND_CYCLICLINK:
3039                                                 cyclic_setup(pinfo, offset, request, tvb, ecmp_tree);
3040                                                 break;
3041                                         case ECMP_COMMAND_PROGRAMCONTROL:
3042                                                 program_control(offset, request, tvb, ecmp_tree);
3043                                                 break;
3044                                         case ECMP_COMMAND_PROGRAMSTATUS:
3045                                                 program_status(offset, request, tvb, ecmp_tree);
3046                                                 break;
3047                                         case ECMP_COMMAND_CYCLICFRAME:
3048                                                 add_cyclic_frame(offset, tvb, ecmp_tree);
3049                                                 break;
3050                                         case ECMP_COMMAND_TUNNELFRAME:
3051                                                 tunnel_frame(offset, command_value, tvb, ecmp_tree);
3052                                                 break;
3053                                         case ECMP_COMMAND_MODBUSPDU:
3054                                                 modbus_pdu(offset, request, tvb, pinfo, ecmp_tree);
3055                                                 break;
3056                                         default:
3057                                                 proto_tree_add_expert(ecmp_tree, pinfo, &ei_ecmp_unknown_command, tvb, 0, -1);
3058                                                 break;
3059                                 }
3060 /********************************* END of code to be modified ***********************************/
3061                         }
3062                 }
3063         }
3064
3065         return framelen;
3066 }
3067
3068 /* this code block processes ECMP UDP messages (cyclic data)  */
3069 static int dissect_ecmp_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
3070 {
3071         proto_item              *ecmp_item = NULL;
3072         proto_tree              *ecmp_tree = NULL;
3073         proto_tree              *ecmp_cyclic_data_32_bit_display_tree = NULL;
3074         proto_tree              *ecmp_cyclic_data_16_bit_display_tree = NULL;
3075         proto_tree              *ecmp_cyclic_data_8_bit_display_tree = NULL;
3076         guint8  command_value = 0;
3077         guint8  type_value = 0;
3078         guint8  transaction_id_value = 0;
3079         guint16 offset = 0; /* index used to read data from the buffer*/
3080         gint    framelen = 0; /* number of bytes in the frame   */
3081         guint8  scheme = 0; /* 0=no scheme, 1=grandmaster setup */
3082
3083         /* note length of the UDP frame  */
3084         framelen = tvb_reported_length(tvb);
3085
3086         if (framelen < ecmp_min_packet_size) {
3087                 return 0;
3088         }
3089
3090         /* display the "ECMP" protocol indication in the PROTOCOL field  */
3091         col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_TAG_ECMP);
3092
3093         /* Clear out stuff in the info column */
3094         col_clear(pinfo->cinfo,COL_INFO);
3095
3096         /* adjust offset to point at transaction ID  */
3097         offset += 2;
3098
3099         /*getting the information from the buffer*/
3100         transaction_id_value = tvb_get_guint8(tvb, offset);
3101
3102         /* adjust offset to point at ECMP query/response code  */
3103         offset += 3;
3104
3105         /* calculate if it's a query or response (type_r_r)  */
3106         type_value = tvb_get_guint8(tvb, offset);
3107
3108         /* determine the ECMP command code  */
3109         command_value = type_value & 0x7f;
3110
3111         /* update offset to point to cyclic link number  */
3112         offset += 2;
3113
3114         /* Information displayed in the Info column*/
3115         col_add_fstr(pinfo->cinfo, COL_INFO, "%s, %s. Transaction ID: %d",
3116                                         val_to_str(command_value, command_vals, "Unknown Type:0x%02x"),
3117                                         val_to_str((type_value & 0x80) >> 7, type_rr, "Unknown Type:0x%02x"), transaction_id_value);
3118
3119         /*display the first line of the tree (ECMP data)*/
3120         ecmp_item = proto_tree_add_item(tree, proto_ecmp, tvb, 0, -1, ENC_NA); /*item created*/
3121         ecmp_tree = proto_item_add_subtree(ecmp_item, ett_ecmp); /*tree created*/
3122
3123         /* indicate cyclic link message  */
3124         proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_link_req_resp, tvb, offset, 1, ENC_BIG_ENDIAN);
3125
3126         /* display the cyclic link number  */
3127         proto_tree_add_item(ecmp_tree, hf_ecmp_cyclic_link_number_display, tvb, offset, 1, ENC_BIG_ENDIAN);
3128         offset += 1;
3129
3130         if (type_value & 0x80) {
3131                 /* response data handled here  */
3132                 /* display the alignment  */
3133                 proto_tree_add_item(ecmp_tree, hf_ecmp_udp_alignment, tvb, offset, 1, ENC_NA);
3134                 offset += 1;
3135
3136                 /* display the scheme  */
3137                 scheme = tvb_get_guint8(tvb, offset);
3138                 proto_tree_add_item(ecmp_tree, hf_ecmp_udp_scheme, tvb, offset, 1, ENC_NA);
3139                 offset += 1;
3140
3141                 /* if the scheme is 1, there is grandmaster data to be printed  */
3142                 if (scheme == 1) {
3143                         proto_tree_add_item(ecmp_tree, hf_ecmp_grandmaster, tvb, offset, 8, ENC_BIG_ENDIAN);
3144                         offset += 8;
3145
3146                         proto_tree_add_item(ecmp_tree, hf_ecmp_process_time, tvb, offset, 8, ENC_BIG_ENDIAN);
3147                         offset += 8;
3148                 }
3149
3150                 /* create the Cyclic Data Display (guint32 format) sub-tree  */
3151                 ecmp_cyclic_data_32_bit_display_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 2, ett_ecmp_cyclic_data_32_bit_display, NULL,
3152                                 "Cyclic Data (32-bit hex unsigned format): ");
3153
3154                 /* display the raw hex data for the cyclic data in a 32-bit format  */
3155                 display_raw_cyclic_data(cyclic_display_long_format, offset, framelen - offset, tvb, ecmp_cyclic_data_32_bit_display_tree);
3156
3157                 /* create the Cyclic Data Display (guint16 format) sub-tree  */
3158                 ecmp_cyclic_data_16_bit_display_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 2, ett_ecmp_cyclic_data_16_bit_display, NULL,
3159                                 "Cyclic Data (16-bit hex unsigned format): ");
3160
3161                 /* display the raw hex data for the cyclic data in a 16-bit format  */
3162                 display_raw_cyclic_data(cyclic_display_word_format, offset, framelen - offset, tvb, ecmp_cyclic_data_16_bit_display_tree);
3163
3164                 /* display the raw hex data for the cyclic data in a guint8 format  */
3165                 ecmp_cyclic_data_8_bit_display_tree = proto_tree_add_subtree(ecmp_tree, tvb, offset, 2, ett_ecmp_cyclic_data_8_bit_display, NULL,
3166                                 "Cyclic Data (8-bit hex unsigned format): ");
3167
3168                 /* display the raw hex data for the cyclic data in 8-bit format */
3169                 display_raw_cyclic_data(cyclic_display_byte_format, offset, framelen - offset, tvb, ecmp_cyclic_data_8_bit_display_tree);
3170         }
3171
3172         return tvb_reported_length(tvb);
3173 }
3174
3175 /* Function to register the protcol*/
3176 /* Wireshark literally scans this file (packet-ecmp.c) to find this function  */
3177 /* note: this function MUST start in column 1, due to the scanning mentioned above */
3178 void proto_register_ecmp (void)
3179 {
3180         /* A header field is something you can search/filter on.
3181         *
3182         * We create a structure to register our fields. It consists of an
3183         * array of hf_register_info structures, each of which are of the format
3184         * {&(field id), {name, abbrev, type, display, strings, bitmask, blurb, HFILL}}.
3185         */
3186
3187         static hf_register_info hf[] = {
3188
3189         { &hf_ecmp_destination_address,
3190         { "Destination Address scheme", "ecmp.destination_address", FT_UINT8, BASE_DEC, VALS(address_scheme), 0, NULL, HFILL }},
3191
3192         { &hf_ecmp_source_address,
3193         { "Source Address scheme", "ecmp.source_address", FT_UINT8, BASE_DEC, VALS(address_scheme), 0, NULL, HFILL }},
3194
3195         { &hf_ecmp_diagnostic,
3196         { "Diagnostic group", "ecmp.diagnostic", FT_UINT8, BASE_DEC, VALS(diagnostic), 0, NULL, HFILL }},
3197
3198         { &hf_ecmp_command,
3199         { "Command", "ecmp.command", FT_UINT8, BASE_DEC, VALS(command_vals), 0x7F, NULL, HFILL }},
3200
3201         { &hf_ecmp_option,
3202         { "Option", "ecmp.option", FT_UINT8, BASE_DEC, VALS(option_code), 0x0, NULL, HFILL }},
3203
3204         { &hf_ecmp_type_rr,
3205         { "Type", "ecmp.type", FT_UINT8, BASE_DEC, VALS(type_rr), 0x80, "ECMP Type (request/response)", HFILL }},
3206
3207         { &hf_ecmp_chunking,
3208         { "Chunks allowed","ecmp.chunking", FT_UINT16, BASE_DEC, NULL,0xF000, "ECMP number of chunks allowed", HFILL}},
3209
3210         { &hf_ecmp_max_response_size,
3211         { "Maximum Response Size","ecmp.response_size", FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0FFF, NULL, HFILL}},
3212
3213         { &hf_ecmp_category,
3214         { "Device", "ecmp.category", FT_UINT8, BASE_DEC, VALS(category), 0x0, "ECMP Category (drive or option module)", HFILL }},
3215
3216         { &hf_ecmp_attribute,
3217         { "Attribute", "ecmp.attribute", FT_UINT8, BASE_DEC, VALS(attribute), 0x0, NULL, HFILL }},
3218
3219         { &hf_ecmp_no_of_attributes,
3220         { "Number of attributes", "ecmp.attribute_number", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3221
3222         { &hf_ecmp_status,
3223         { "Status", "ecmp.status", FT_INT8, BASE_DEC, VALS(status), 0x0, NULL, HFILL }},
3224
3225         { &hf_ecmp_chunk_id,
3226         { "Chunk ID", "ecmp.chunkID", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3227
3228         { &hf_ecmp_transaction_id,
3229         { "Transaction ID", "ecmp.transactionID", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3230
3231         { &hf_ecmp_drive_type,
3232         { "Product Type", "ecmp.drive_type", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3233
3234         { &hf_ecmp_drive_derivative,
3235         { "Drive Derivative", "ecmp.drive_derivative", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3236
3237         { &hf_ecmp_drive_factory_fit_category_id,
3238         { "Factory Fitted Option ID", "ecmp.drive_factory_fit_category_id", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3239
3240         { &hf_ecmp_category_id,
3241         { "Option ID", "ecmp.category_id", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3242
3243         { &hf_ecmp_cyclic_link_num,
3244         { "Cyclic Link Number", "ecmp.link_num", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3245
3246         { &hf_ecmp_cyclic_align,
3247         { "Alignment", "ecmp.cyclic_align", FT_UINT8, BASE_DEC, VALS(cyclic_align), 0x0, "ECMP Cyclic Data Alignment", HFILL }},
3248
3249         { &hf_ecmp_cyclic_scheme,
3250         { "Scheme", "ecmp.cyclic_scheme", FT_UINT8, BASE_DEC, VALS(cyclic_scheme), 0x0, "ECMP Cyclic Scheme", HFILL }},
3251
3252         { &hf_ecmp_cyclic_link_number_display,
3253         { "Cyclic Link Number Display", "ecmp.link_num_display", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3254
3255         { &hf_ecmp_buffer_size,
3256         {"Buffer Size", "ecmp.buffer_size", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3257
3258         { &hf_ecmp_max_response,
3259         {"Maximum Response Time", "ecmp.max_response", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3260
3261         { &hf_ecmp_max_handle,
3262         {"Maximum Handle Period", "ecmp.max_handle", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3263
3264         { &hf_ecmp_info_address,
3265         {"Number of Default Route Addresses", "ecmp.count", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3266
3267         { &hf_ecmp_parameter_address,
3268         {"Parameter Addressing Scheme", "ecmp.parameter.address", FT_UINT8, BASE_DEC, VALS(parameter_address_scheme), 0x0, NULL, HFILL}},
3269
3270         { &hf_ecmp_number_of_parameter_definitions,
3271         {"Number of Parameter Definitions", "ecmp.parameter.definitions", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3272
3273         { &hf_ecmp_number_of_parameter_responses,
3274         {"Number of Parameter Responses", "ecmp.parameter.response", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3275
3276         { &hf_ecmp_parameter_status,
3277         {"Parameter Status", "ecmp.parameter.status", FT_INT8, BASE_DEC, VALS(parameter_access_status), 0x0, NULL, HFILL}},
3278
3279         { &hf_ecmp_data_type,
3280         {"Parameter Data Type", "ecmp.parameter.data_type", FT_UINT8, BASE_DEC, VALS(parameter_data_types), 0x0, NULL, HFILL}},
3281
3282         { &hf_ecmp_info_type,
3283         {"Info Type", "ecmp.info_type", FT_UINT8, BASE_DEC, VALS(info_type), 0x0, NULL, HFILL}},
3284
3285         { &hf_ecmp_file_status,
3286         {"File Status", "ecmp.file.status", FT_INT8, BASE_DEC, VALS(file_status), 0x0, NULL, HFILL}},
3287
3288         { &hf_ecmp_file_handle,
3289         {"File Handle", "ecmp.file.handle", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}},
3290
3291         { &hf_ecmp_file_attributes,
3292         {"Attribute", "ecmp.file.attribute", FT_UINT8, BASE_DEC, VALS(file_attributes), 0x0, "File attributes", HFILL}},
3293
3294         { &hf_ecmp_file_ref_point,
3295         {"Reference Point", "ecmp.file.reference", FT_UINT8, BASE_DEC, VALS(file_ref_point), 0x0, "File reference points", HFILL}},
3296
3297         { &hf_ecmp_tunnel_control,
3298         {"Control", "ecmp.tunnel_control", FT_UINT8, BASE_DEC, NULL, 0x0, "Tunnel frame control field", HFILL}},
3299
3300         { &hf_ecmp_tunnel_start_flag,
3301         {"Start", "ecmp.tunnel_control.start", FT_BOOLEAN, 8, NULL, TUNNEL_START_FLAG, "Tunnel frame control field start flag", HFILL}},
3302
3303         { &hf_ecmp_tunnel_end_flag,
3304         {"End", "ecmp.tunnel_control.end", FT_BOOLEAN, 8, NULL, TUNNEL_END_FLAG, "Tunnel frame control field end flag", HFILL}},
3305
3306         { &hf_ecmp_tunnel_check_output_flag,
3307         {"Check Output", "ecmp.tunnel_control.check", FT_BOOLEAN, 8, NULL, TUNNEL_CHECK_OUTPUT_FLAG, "Tunnel frame control field check output flag", HFILL}},
3308
3309         { &hf_ecmp_tunnel_size,
3310         {"Size", "ecmp.tunnel_size", FT_UINT16, BASE_DEC, NULL, 0x0, "Tunnel frame payload size", HFILL}},
3311
3312         { &hf_ecmp_cyclic_setup_mode,
3313         {"Mode", "ecmp.cyclic_setup.mode", FT_UINT8, BASE_DEC, VALS(cyclic_setup_mode), 0x0, "Cyclic setup mode", HFILL}},
3314
3315         { &hf_ecmp_cyclic_setup_linkno,
3316         {"Link No", "ecmp.cyclic_setup.linkno", FT_UINT8, BASE_DEC, NULL, 0x0, "Cyclic setup link no", HFILL}},
3317
3318         { &hf_ecmp_cyclic_setup_dir,
3319         {"Direction", "ecmp.cyclic_setup.direction", FT_UINT8, BASE_DEC, VALS(cyclic_setup_link_dir), 0x0, "Cyclic setup link direction", HFILL}},
3320
3321         { &hf_ecmp_cyclic_setup_attrib_count,
3322         {"Count", "ecmp.cyclic_setup.attrib_count", FT_UINT8, BASE_DEC, NULL, 0x0, "Cyclic setup attribute count", HFILL}},
3323
3324         { &hf_ecmp_cyclic_setup_attrib,
3325         {"Attribute", "ecmp.cyclic_setup.attrib", FT_UINT8, BASE_DEC, VALS(cyclic_attributes), 0x0, "Cyclic setup attribute", HFILL}},
3326
3327         { &hf_ecmp_cyclic_setup_rsp_status,
3328         {"Status", "ecmp.cyclic_setup.rsp_status", FT_INT8, BASE_DEC, NULL, 0x0, "Cyclic setup status", HFILL}},
3329
3330         { &hf_ecmp_cyclic_setup_rsp_err_idx,
3331         {"Error Index", "ecmp.cyclic_setup.rsp_err_idx", FT_UINT8, BASE_DEC, NULL, 0x0, "Cyclic setup error index", HFILL}},
3332
3333         { &hf_ecmp_cyclic_setup_link_exists,
3334         {"Existence State", "ecmp.cyclic_setup.exists.state", FT_UINT8, BASE_DEC, VALS(cyclic_setup_link_exists), 0x0, "Cyclic setup exists state", HFILL}},
3335
3336         { &hf_ecmp_cyclic_link_req_resp,
3337         {"Cyclic Link - Request-Response", "ecmp.cyclic_link.request.response", FT_UINT8, BASE_DEC, VALS(cyclic_link_req_resp), 0x0, "Cyclic link request - response", HFILL}},
3338
3339         { &hf_ecmp_attribute_string,
3340         { "Attribute string", "ecmp.attribute_string", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3341
3342         { &hf_ecmp_file_name,
3343         { "File name", "ecmp.file_name", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3344
3345         { &hf_ecmp_directory,
3346         { "Directory", "ecmp.directory", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3347
3348         { &hf_ecmp_names_scheme,
3349         { "Names Scheme", "ecmp.names_scheme", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3350
3351         { &hf_ecmp_variable_name,
3352         { "Variable name", "ecmp.variable_name", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3353
3354         { &hf_ecmp_unit_id_string,
3355         { "Unit ID String", "ecmp.unit_id_string", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3356
3357         { &hf_ecmp_ecmp_string,
3358         { "ECMP string", "ecmp.ecmp_string", FT_UINT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3359
3360         { &hf_ecmp_info_command,
3361         { "Info command data", "ecmp.info_command", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3362
3363         { &hf_ecmp_process_time,
3364         { "ProcessAt time", "ecmp.processat_time",  FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3365
3366         { &hf_ecmp_cyclic_frame_time,
3367         { "Cyclic frame time", "ecmp.cyclic_frame_time",  FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3368
3369         { &hf_ecmp_grandmaster,
3370         { "Grandmaster", "ecmp.grandmaster",  FT_EUI64, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3371
3372         { &hf_ecmp_data,
3373         { "Data", "ecmp.data",  FT_BYTES, SEP_SPACE, NULL, 0x0, NULL, HFILL }},
3374
3375         { &hf_ecmp_response_data,
3376         { "Response Data", "ecmp.response_data",  FT_BYTES, SEP_SPACE, NULL, 0x0, NULL, HFILL }},
3377
3378         /* Generated from convert_proto_tree_add_text.pl */
3379         { &hf_ecmp_physical_address, { "Physical address", "ecmp.physical_address", FT_UINT8, BASE_DEC, NULL, 0x0F, NULL, HFILL }},
3380         { &hf_ecmp_logical_address, { "Logical address", "ecmp.logical_address", FT_UINT8, BASE_DEC, NULL, 0xF0, NULL, HFILL }},
3381         { &hf_ecmp_primary_colour, { "Primary Colour", "ecmp.primary_colour", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
3382         { &hf_ecmp_secondary_colour, { "Secondary Colour", "ecmp.secondary_colour", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
3383         { &hf_ecmp_number_of_subsequent_object_requests, { "Number of subsequent object requests", "ecmp.number_of_subsequent_object_requests", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3384         { &hf_ecmp_number_of_decimal_places, { "Number of decimal places", "ecmp.number_of_decimal_places", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3385         { &hf_ecmp_no_information_available, { "No Information available", "ecmp.no_information_available", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3386         { &hf_ecmp_param_format_bit_default_unipolar, { "BU- Bit default/Unipolar", "ecmp.param_format.bit_default_unipolar", FT_UINT32, BASE_DEC, NULL, 0x00000001, NULL, HFILL }},
3387         { &hf_ecmp_param_format_write_allowed, { "W- Write allowed", "ecmp.param_format.write_allowed", FT_UINT32, BASE_DEC, NULL, 0x00000002, NULL, HFILL }},
3388         { &hf_ecmp_param_format_read_not_allowed, { "NR- Read not allowed", "ecmp.param_format.read_not_allowed", FT_UINT32, BASE_DEC, NULL, 0x00000004, NULL, HFILL }},
3389         { &hf_ecmp_param_format_protected_from_destinations, { "PT- Protected from destinations", "ecmp.param_format.protected_from_destinations", FT_UINT32, BASE_DEC, NULL, 0x00000008, NULL, HFILL }},
3390         { &hf_ecmp_param_format_parameter_not_visible, { "NV- Parameter not visible", "ecmp.param_format.parameter_not_visible", FT_UINT32, BASE_DEC, NULL, 0x00000010, NULL, HFILL }},
3391         { &hf_ecmp_param_format_not_clonable, { "NC- Not clonable", "ecmp.param_format.not_clonable", FT_UINT32, BASE_DEC, NULL, 0x00000020, NULL, HFILL }},
3392         { &hf_ecmp_param_format_voltage_or_current_rating_dependent, { "RA- Voltage or current rating dependent", "ecmp.param_format.voltage_or_current_rating_dependent", FT_UINT32, BASE_DEC, NULL, 0x00000040, NULL, HFILL }},
3393         { &hf_ecmp_param_format_parameter_has_no_default, { "ND- Parameter has no default", "ecmp.param_format.parameter_has_no_default", FT_UINT32, BASE_DEC, NULL, 0x00000080, NULL, HFILL }},
3394         { &hf_ecmp_param_format_number_of_decimal_places, { "DP- Number of Decimal places", "ecmp.param_format.number_of_decimal_places", FT_UINT32, BASE_DEC, NULL, 0x00000F00, NULL, HFILL }},
3395         { &hf_ecmp_param_format_variable_maximum_and_minimum, { "VM- Variable maximum and minimum", "ecmp.param_format.variable_maximum_and_minimum", FT_UINT32, BASE_DEC, NULL, 0x00001000, NULL, HFILL }},
3396         { &hf_ecmp_param_format_string_parameter, { "TE- String parameter", "ecmp.param_format.string_parameter", FT_UINT32, BASE_DEC, NULL, 0x00002000, NULL, HFILL }},
3397         { &hf_ecmp_param_format_desitination_set_up_parameter, { "DE- Desitination set-up parameter", "ecmp.param_format.desitination_set_up_parameter", FT_UINT32, BASE_DEC, NULL, 0x00004000, NULL, HFILL }},
3398         { &hf_ecmp_param_format_filtered_when_displayed, { "FI- Filtered when displayed", "ecmp.param_format.filtered_when_displayed", FT_UINT32, BASE_DEC, NULL, 0x00008000, NULL, HFILL }},
3399         { &hf_ecmp_param_format_pseudo_read_only, { "PR- Pseudo read only", "ecmp.param_format.pseudo_read_only", FT_UINT32, BASE_DEC, NULL, 0x00010000, NULL, HFILL }},
3400         { &hf_ecmp_param_format_display_format, { "DF- Display Format", "ecmp.param_format.display_format", FT_UINT32, BASE_DEC, VALS(display_format), 0x001E0000, NULL, HFILL }},
3401         { &hf_ecmp_param_format_floating_point_value, { "FL- Floating point value", "ecmp.param_format.floating_point_value", FT_UINT32, BASE_DEC, NULL, 0x00200000, NULL, HFILL }},
3402         { &hf_ecmp_param_format_units, { "UNITS", "ecmp.param_format.units", FT_UINT32, BASE_DEC, VALS(format_units), 0x0FC00000, NULL, HFILL }},
3403         { &hf_ecmp_string_id, { "String ID", "ecmp.string_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3404         { &hf_ecmp_address_scheme_menu, { "Menu", "ecmp.address_scheme.menu", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3405         { &hf_ecmp_address_scheme_parameter, { "Parameter", "ecmp.address_scheme.parameter", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3406         { &hf_ecmp_address_scheme_slot, { "Slot", "ecmp.address_scheme.slot", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3407         { &hf_ecmp_address_scheme_null_byte_size, { "NULL byte size", "ecmp.address_scheme.null_byte_size", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3408         { &hf_ecmp_display_unit_id, { "Unit ID", "ecmp.display_unit_id", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3409         { &hf_ecmp_data_boolean, { "Data", "ecmp.data.boolean", FT_UINT8, BASE_DEC, NULL, 0x01, NULL, HFILL }},
3410         { &hf_ecmp_data_int8, { "Data", "ecmp.data.int8", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3411         { &hf_ecmp_data_uint8, { "Data", "ecmp.data.uint8", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3412         { &hf_ecmp_data_int16, { "Data", "ecmp.data.int16", FT_INT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3413         { &hf_ecmp_data_uint16, { "Data", "ecmp.data.uint16", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3414         { &hf_ecmp_data_int32, { "Data", "ecmp.data.int32", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3415         { &hf_ecmp_data_uint32, { "Data", "ecmp.data.uint32", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3416         { &hf_ecmp_data_int64, { "Data", "ecmp.data.int64", FT_INT64, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3417         { &hf_ecmp_data_uint64, { "Data", "ecmp.data.uint64", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3418         { &hf_ecmp_data_float, { "Data", "ecmp.data.float", FT_FLOAT, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3419         { &hf_ecmp_data_double, { "Data", "ecmp.data.double", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3420         { &hf_ecmp_access_mode, { "Access Mode", "ecmp.access_mode", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
3421         { &hf_ecmp_open_in_non_blocking_mode, { "Open in non-blocking mode", "ecmp.open_in_non_blocking_mode", FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }},
3422         { &hf_ecmp_open_file_relative_to_specified_directory_handle, { "Open file relative to specified directory handle", "ecmp.open_file_relative_to_specified_directory_handle", FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }},
3423         { &hf_ecmp_file_access_mode, { "File Access Mode", "ecmp.file_access_mode", FT_UINT8, BASE_DEC, VALS(file_status_mode), 0x0F, NULL, HFILL }},
3424         { &hf_ecmp_additional_scheme, { "Additional Scheme", "ecmp.additional_scheme", FT_UINT8, BASE_DEC, VALS(additional_scheme_vals), 0x0, NULL, HFILL }},
3425         { &hf_ecmp_scheme_data_length, { "Length", "ecmp.scheme_data_length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3426         { &hf_ecmp_number_of_requested_bytes, { "Number of requested bytes", "ecmp.number_of_requested_bytes", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3427         { &hf_ecmp_number_of_bytes_transferred, { "Number of bytes transferred", "ecmp.number_of_bytes_transferred", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3428         { &hf_ecmp_crc, { "CRC", "ecmp.crc", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3429         { &hf_ecmp_ref_offset, { "Offset", "ecmp.ref_offset", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3430         { &hf_ecmp_number_of_files_to_list, { "Number of files to list", "ecmp.number_of_files_to_list", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3431         { &hf_ecmp_file_hash, { "Hash", "ecmp.file_hash", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3432         { &hf_ecmp_item_type, { "Item type", "ecmp.item_type", FT_UINT8, BASE_DEC, VALS(item_type_vals), 0x0, NULL, HFILL }},
3433         { &hf_ecmp_file_integrity, { "File Integrity", "ecmp.file_integrity", FT_UINT8, BASE_DEC, VALS(file_integrity_vals), 0x01, NULL, HFILL }},
3434         { &hf_ecmp_display_attr_read_only, { "Read Only", "ecmp.display_attr.read_only", FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL }},
3435         { &hf_ecmp_display_attr_hidden, { "Hidden", "ecmp.display_attr.hidden", FT_BOOLEAN, 8, NULL, 0x02, NULL, HFILL }},
3436         { &hf_ecmp_display_attr_system, { "System", "ecmp.display_attr.system", FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }},
3437         { &hf_ecmp_display_attr_volume_label, { "Volume Label", "ecmp.display_attr.volume_label", FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }},
3438         { &hf_ecmp_display_attr_subdirectory, { "Subdirectory", "ecmp.display_attr.subdirectory", FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }},
3439         { &hf_ecmp_display_attr_archive, { "Archive", "ecmp.display_attr.archive", FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL }},
3440         { &hf_ecmp_display_creation, { "Display creation", "ecmp.display_creation", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3441         { &hf_ecmp_display_modification, { "Display modification", "ecmp.display_modification", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3442         { &hf_ecmp_interrogate_item_type, { "Item Type", "ecmp.interrogate_item_type", FT_UINT8, BASE_DEC, VALS(Interrogate_command_option_state), 0x0, NULL, HFILL }},
3443         { &hf_ecmp_interrogate_count, { "Count", "ecmp.interrogate_count", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3444         { &hf_ecmp_modbus_pdu_size, { "Size", "ecmp.modbus_pdu_size", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3445 #if 0
3446         { &hf_ecmp_destination_scheme, { "Destination Scheme", "ecmp.destination_scheme", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3447 #endif
3448         { &hf_ecmp_program_control_target, { "Target", "ecmp.program_control_target", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3449         { &hf_ecmp_program_control_command, { "Command", "ecmp.program_control_command", FT_UINT8, BASE_DEC, VALS(command_code_list), 0x0, NULL, HFILL }},
3450         { &hf_ecmp_program_control_sub_command, { "Sub-Command", "ecmp.program_control_sub_command", FT_UINT8, BASE_DEC, VALS(sub_command_code_list), 0x0, NULL, HFILL }},
3451         { &hf_ecmp_program_control_status, { "Status", "ecmp.program_control_status", FT_UINT8, BASE_DEC, VALS(status_list), 0x0, NULL, HFILL }},
3452         { &hf_ecmp_program_status_target, { "Target", "ecmp.program_status_target", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3453         { &hf_ecmp_program_status_status, { "Status", "ecmp.program_status_status", FT_UINT8, BASE_DEC, VALS(running_state_list), 0x0, NULL, HFILL }},
3454         { &hf_ecmp_program_status_additional_items, { "Additional Items", "ecmp.program_status_additional_items", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3455         { &hf_ecmp_cyclic_setup_max_mappings, { "Max Mappings", "ecmp.cyclic_setup.max_mappings", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3456         { &hf_ecmp_cyclic_setup_start_offset, { "Start Offset", "ecmp.cyclic_setup.start_offset", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3457         { &hf_ecmp_cyclic_setup_tx_count, { "Tx Count", "ecmp.cyclic_setup.tx_count", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3458         { &hf_ecmp_cyclic_setup_rx_count, { "Rx Count", "ecmp.cyclic_setup.rx_count", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3459         { &hf_ecmp_udp_alignment, { "Alignment", "ecmp.udp_alignment", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3460         { &hf_ecmp_udp_scheme, { "Scheme", "ecmp.udp_scheme", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3461         { &hf_ecmp_cyclic_data, { "Cyclic Data", "ecmp.cyclic_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3462         { &hf_ecmp_version_summary, { "Version summary", "ecmp.version_summary", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3463         { &hf_ecmp_min_param_menu, { "Min parameter in menu", "ecmp.min_param_menu", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3464         { &hf_ecmp_max_param_menu, { "Max parameter in menu", "ecmp.max_param_menu", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3465         { &hf_ecmp_file_length, { "File length", "ecmp.file_length", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3466         { &hf_ecmp_mec_offset, { "mec_offset", "ecmp.mec_offset", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3467         { &hf_ecmp_sample_period, { "Sample period", "ecmp.sample_period", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3468         { &hf_ecmp_rx_timeout, { "RX Timeout", "ecmp.rx_timeout", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0x0, NULL, HFILL }},
3469         { &hf_ecmp_rx_action, { "Action", "ecmp.rx_action", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3470         { &hf_ecmp_rx_event_destination, { "Event Destination", "ecmp.rx_event_destination", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3471         { &hf_ecmp_rx_event, { "Event", "ecmp.rx_event", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3472         { &hf_ecmp_rx_late_handler_action, { "Action", "ecmp.rx_late_handler_action", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3473         { &hf_ecmp_rx_late_handler_event_destination, { "Event Destination", "ecmp.rx_late_handler_event_destination", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3474         { &hf_ecmp_rx_late_handler_event, { "Event", "ecmp.rx_late_handler_event", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3475         { &hf_ecmp_transport_addr_scheme, { "Scheme", "ecmp.transport_addr_scheme", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3476         { &hf_ecmp_transport_addr, { "Transport address", "ecmp.transport_addr", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
3477         { &hf_ecmp_mapping_item_offset, { "Offset", "ecmp.mapping_item_offset", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3478         { &hf_ecmp_mapping_item_scheme, { "Scheme", "ecmp.mapping_item_scheme", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3479         { &hf_ecmp_setup_attribute, { "Attribute", "ecmp.setup_attribute", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3480         { &hf_ecmp_mec_period, { "mec period", "ecmp.mec_period", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
3481         { &hf_ecmp_interrogate_command, { "Command", "ecmp.interrogate_command", FT_UINT8, BASE_DEC, VALS(command_vals), 0x0, NULL, HFILL }}
3482 };
3483
3484 /* array to store pointers to the ids of the subtrees that we may be creating */
3485         static gint *ett[] = {
3486                 &ett_ecmp,
3487                 &ett_ecmp_address,
3488                 &ett_ecmp_response_size,
3489                 &ett_ecmp_command,
3490                 &ett_ecmp_category,
3491                 &ett_ecmp_option,
3492                 &ett_ecmp_option_data,
3493                 &ett_ecmp_attribute,
3494                 &ett_ecmp_attribute_data,
3495                 &ett_ecmp_cyclic_scheme,
3496                 &ett_ecmp_interrogate_message,
3497                 &ett_ecmp_info_type,
3498                 &ett_ecmp_info_count,
3499                 &ett_ecmp_param_address,
3500                 &ett_ecmp_access_mode,
3501                 &ett_ecmp_access_file,
3502                 &ett_ecmp_file_read,
3503                 &ett_ecmp_file_write,
3504                 &ett_ecmp_file_info,
3505                 &ett_ecmp_file_info_att,
3506                 &ett_ecmp_file_position,
3507                 &ett_ecmp_file_list_no,
3508                 &ett_ecmp_file_list,
3509                 &ett_ecmp_tunnel_3s_goodframe,
3510                 &ett_ecmp_tunnel_3s_size,
3511                 &ett_ecmp_tunnel_3s_service,
3512                 &ett_cyclic_setup_attribs,
3513                 &ett_cyclic_setup_transport_addr,
3514                 &ett_cyclic_setup_attrib_item,
3515                 &ett_ecmp_cyclic_data_32_bit_display,
3516                 &ett_ecmp_cyclic_data_16_bit_display,
3517                 &ett_ecmp_cyclic_data_8_bit_display,
3518                 &ett_ecmp_modbus_pdu_message,
3519                 &ett_ecmp_program_control_message,
3520                 &ett_ecmp_program_status_message
3521         };
3522
3523         static ei_register_info ei[] = {
3524                 { &ei_ecmp_unknown_command, { "ecmp.unknown_command", PI_PROTOCOL, PI_WARN, "Unknown Command", EXPFILL }},
3525                 { &ei_ecmp_color, { "ecmp.color_invalid", PI_PROTOCOL, PI_WARN, "Invalid color data value", EXPFILL }},
3526                 { &ei_ecmp_option, { "ecmp.ecmp_option.unknown", PI_PROTOCOL, PI_WARN, "ERROR - Unrecognised Option Code", EXPFILL }},
3527                 { &ei_ecmp_data_type, { "ecmp.data_type.unknown", PI_PROTOCOL, PI_WARN, "Unknown Data Type", EXPFILL }},
3528                 { &ei_ecmp_parameter_addressing_scheme, { "ecmp.incorrect_parameter_addressing_scheme", PI_PROTOCOL, PI_WARN, "Incorrect parameter addressing scheme", EXPFILL }},
3529                 { &ei_ecmp_info_type, { "ecmp.info_type.unknown", PI_PROTOCOL, PI_WARN, "Unknown info type", EXPFILL }},
3530                 { &ei_ecmp_attribute_type, { "ecmp.attribute_type.unknown", PI_PROTOCOL, PI_WARN, "Wrong attribute type", EXPFILL }},
3531                 { &ei_ecmp_item_type, { "ecmp.item_type.unknown", PI_PROTOCOL, PI_WARN, "Unknown item type", EXPFILL }},
3532                 { &ei_ecmp_options_not_implemented, { "ecmp.options_not_implemented", PI_UNDECODED, PI_WARN, "ECMP Options Not Implemented", EXPFILL }}
3533         };
3534
3535         expert_module_t* expert_ecmp;
3536
3537         proto_ecmp = proto_register_protocol ("ECMP", PROTO_TAG_ECMP, "ecmp");
3538
3539         /* full name short name and abbreviation (display filter name)*/
3540         proto_register_field_array(proto_ecmp, hf, array_length (hf));
3541         proto_register_subtree_array (ett, array_length (ett));
3542         expert_ecmp = expert_register_protocol(proto_ecmp);
3543         expert_register_field_array(expert_ecmp, ei, array_length(ei));
3544 }
3545
3546 /* Function to initialise the dissector*/
3547 /* Wireshark literally scans this file (packet-ecmp.c) to find this function  */
3548 void proto_reg_handoff_ecmp(void)
3549 {
3550         dissector_handle_t ecmp_tcp_handle, ecmp_udp_handle;
3551
3552         ecmp_tcp_handle = create_dissector_handle(dissect_ecmp_tcp, proto_ecmp);
3553         ecmp_udp_handle = create_dissector_handle(dissect_ecmp_udp, proto_ecmp);
3554
3555         /* Cyclic frames are over UDP and non-cyclic are over TCP */
3556         dissector_add_uint_with_preference("udp.port", ECMP_TCP_PORT, ecmp_udp_handle);
3557         dissector_add_uint_with_preference("tcp.port", ECMP_TCP_PORT, ecmp_tcp_handle);
3558
3559         /* Modbus dissector hooks */
3560         modbus_handle = find_dissector_add_dependency("modbus", proto_ecmp);
3561         proto_modbus = proto_get_id_by_filter_name( "modbus" );
3562 }
3563
3564
3565 /*
3566  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
3567  *
3568  * Local variables:
3569  * c-basic-offset: 8
3570  * tab-width: 8
3571  * indent-tabs-mode: t
3572  * End:
3573  *
3574  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
3575  * :indentSize=8:tabSize=8:noTabs=false:
3576  */