epan/dissectors/packet-scriptingservice.c

   1 /* packet-scriptingservice.c
   2  * Routines for the Scripting Service Protocol, a load distribution application
   3  * of the RSPLIB RSerPool implementation
   4  * https://www.uni-due.de/~be0001/rserpool/
   5  *
   6  * Copyright 2006-2021 by Thomas Dreibholz <dreibh [AT] iem.uni-due.de>
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 #include "config.h"
  16
  17 #include <epan/packet.h>
  18 #include <epan/sctpppids.h>
  19 #include <epan/stat_tap_ui.h>
  20 #include <epan/tfs.h>
  21
  22 #include <wsutil/array.h>
  23
  24 void proto_register_ssprotocol(void);
  25 void proto_reg_handoff_ssprotocol(void);
  26
  27 static dissector_handle_t ssprotocol_handle;
  28
  29 #define SSPROTOCOL_PAYLOAD_PROTOCOL_ID_LEGACY 0x29097604
  30
  31
  32 /* Initialize the protocol and registered fields */
  33 static int proto_ssprotocol;
  34 static int tap_ssprotocol       = -1;
  35 static int hf_message_type;
  36 static int hf_message_flags;
  37 static int hf_message_length;
  38 static int hf_message_status;
  39 static int hf_message_data;
  40 static int hf_message_reason;
  41 static int hf_message_info;
  42 static int hf_message_hash;
  43 static int hf_environment_u_bit;
  44
  45 static uint64_t ssprotocol_total_msgs;
  46 static uint64_t ssprotocol_total_bytes;
  47
  48 /* Initialize the subtree pointers */
  49 static int ett_ssprotocol;
  50 static int ett_environment_flags;
  51
  52 /* Dissectors for messages. This is specific to ScriptingServiceProtocol */
  53 #define MESSAGE_TYPE_LENGTH          1
  54 #define MESSAGE_FLAGS_LENGTH         1
  55 #define MESSAGE_LENGTH_LENGTH        2
  56 #define MESSAGE_STATUS_LENGTH        4
  57 #define MESSAGE_NOTRDY_REASON_LENGTH 4
  58 #define MESSAGE_ENVIRON_HASH_LENGTH  20
  59
  60 #define MESSAGE_TYPE_OFFSET          0
  61 #define MESSAGE_FLAGS_OFFSET         (MESSAGE_TYPE_OFFSET   + MESSAGE_TYPE_LENGTH)
  62 #define MESSAGE_LENGTH_OFFSET        (MESSAGE_FLAGS_OFFSET  + MESSAGE_FLAGS_LENGTH)
  63 #define MESSAGE_STATUS_OFFSET        (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
  64 #define MESSAGE_DATA_OFFSET          (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
  65 #define MESSAGE_RDY_INFO_OFFSET      (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
  66 #define MESSAGE_NOTRDY_REASON_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
  67 #define MESSAGE_NOTRDY_INFO_OFFSET   (MESSAGE_NOTRDY_REASON_OFFSET + MESSAGE_NOTRDY_REASON_LENGTH)
  68 #define MESSAGE_ENVIRON_HASH_OFFSET  (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
  69
  70
  71 #define SS_NOTREADY_TYPE       0
  72 #define SS_READY_TYPE          1
  73 #define SS_UPLOAD_TYPE         2
  74 #define SS_DOWNLOAD_TYPE       3
  75 #define SS_KEEPALIVE_TYPE      4
  76 #define SS_KEEPALIVE_ACK_TYPE  5
  77 #define SS_STATUS_TYPE         6
  78 #define SS_ENVIRONMENT_TYPE    7
  79
  80
  81 static const value_string message_type_values[] = {
  82   { SS_NOTREADY_TYPE,       "Not Ready" },
  83   { SS_READY_TYPE,          "Ready" },
  84   { SS_UPLOAD_TYPE,         "Upload" },
  85   { SS_DOWNLOAD_TYPE,       "Download" },
  86   { SS_KEEPALIVE_TYPE,      "Keep-Alive" },
  87   { SS_KEEPALIVE_ACK_TYPE,  "Keep-Alive Ack" },
  88   { SS_STATUS_TYPE,         "Status" },
  89   { SS_ENVIRONMENT_TYPE,    "Environment" },
  90   { 0, NULL }
  91 };
  92
  93
  94 static const value_string notrdy_reason_values[] = {
  95   { 0x00000001, "Fully Loaded" },
  96   { 0x00000002, "Out of Resources" },
  97   { 0, NULL }
  98 };
  99
 100
 101 #define SSP_ENVIRONMENT_U_BIT 0x01
 102 static const true_false_string environment_u_bit = {
 103   "Upload needed",
 104   "Upload not needed"
 105 };
 106
 107
 108 typedef struct _tap_ssprotocol_rec_t {
 109   uint8_t     type;
 110   uint16_t    size;
 111   const char* type_string;
 112 } tap_ssprotocol_rec_t;
 113
 114
 115 static unsigned
 116 dissect_ssprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *ssprotocol_tree)
 117 {
 118   proto_item* flags_item;
 119   proto_tree* flags_tree;
 120   uint16_t    data_length;
 121   uint16_t    info_length;
 122   unsigned    total_length;
 123
 124   tap_ssprotocol_rec_t* tap_rec = wmem_new0(pinfo->pool, tap_ssprotocol_rec_t);
 125   tap_rec->type        = tvb_get_uint8(message_tvb, MESSAGE_TYPE_OFFSET);
 126   tap_rec->size        = tvb_get_ntohs(message_tvb,  MESSAGE_LENGTH_OFFSET);
 127   tap_rec->type_string = val_to_str_const(tap_rec->type, message_type_values, "Unknown SSP message type");
 128   tap_queue_packet(tap_ssprotocol, pinfo, tap_rec);
 129
 130   col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", tap_rec->type_string);
 131
 132   proto_tree_add_item(ssprotocol_tree, hf_message_type,   message_tvb, MESSAGE_TYPE_OFFSET,   MESSAGE_TYPE_LENGTH,   ENC_BIG_ENDIAN);
 133   flags_item = proto_tree_add_item(ssprotocol_tree, hf_message_flags,  message_tvb, MESSAGE_FLAGS_OFFSET,  MESSAGE_FLAGS_LENGTH,  ENC_BIG_ENDIAN);
 134   proto_tree_add_item(ssprotocol_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
 135   total_length = MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH;
 136   switch (tap_rec->type) {
 137     case SS_KEEPALIVE_ACK_TYPE:
 138     case SS_STATUS_TYPE:
 139       info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_STATUS_OFFSET;
 140       if (info_length == MESSAGE_STATUS_LENGTH) {
 141         proto_tree_add_item(ssprotocol_tree, hf_message_status, message_tvb, MESSAGE_STATUS_OFFSET, MESSAGE_STATUS_LENGTH, ENC_BIG_ENDIAN);
 142         total_length += MESSAGE_STATUS_LENGTH;
 143       }
 144       break;
 145     case SS_UPLOAD_TYPE:
 146     case SS_DOWNLOAD_TYPE:
 147       data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_DATA_OFFSET;
 148       if (data_length > 0) {
 149         proto_tree_add_item(ssprotocol_tree, hf_message_data, message_tvb, MESSAGE_DATA_OFFSET, data_length, ENC_NA);
 150         total_length += data_length;
 151       }
 152       break;
 153     case SS_READY_TYPE:
 154       info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_RDY_INFO_OFFSET;
 155       if (info_length > 0) {
 156         proto_tree_add_item(ssprotocol_tree, hf_message_info, message_tvb, MESSAGE_RDY_INFO_OFFSET, info_length, ENC_ASCII);
 157         total_length += info_length;
 158       }
 159       break;
 160     case SS_NOTREADY_TYPE:
 161       info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_NOTRDY_INFO_OFFSET;
 162       if (info_length > 0) {
 163         proto_tree_add_item(ssprotocol_tree, hf_message_reason, message_tvb, MESSAGE_NOTRDY_REASON_OFFSET, MESSAGE_NOTRDY_REASON_LENGTH, ENC_BIG_ENDIAN);
 164         proto_tree_add_item(ssprotocol_tree, hf_message_info,   message_tvb, MESSAGE_NOTRDY_INFO_OFFSET, info_length, ENC_ASCII);
 165         total_length += info_length;
 166       }
 167       break;
 168     case SS_ENVIRONMENT_TYPE:
 169         flags_tree = proto_item_add_subtree(flags_item, ett_environment_flags);
 170         proto_tree_add_item(flags_tree, hf_environment_u_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
 171         proto_tree_add_item(ssprotocol_tree, hf_message_hash, message_tvb, MESSAGE_ENVIRON_HASH_OFFSET, MESSAGE_ENVIRON_HASH_LENGTH, ENC_NA);
 172       break;
 173     default:
 174       break;
 175   }
 176
 177   return total_length;
 178 }
 179
 180
 181 static int
 182 dissect_ssprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
 183 {
 184   proto_item *ssprotocol_item;
 185   proto_tree *ssprotocol_tree;
 186
 187   col_set_str(pinfo->cinfo, COL_PROTOCOL, "SSP");
 188
 189   /* create the ssprotocol protocol tree */
 190   ssprotocol_item = proto_tree_add_item(tree, proto_ssprotocol, message_tvb, 0, -1, ENC_NA);
 191   ssprotocol_tree = proto_item_add_subtree(ssprotocol_item, ett_ssprotocol);
 192
 193   /* dissect the message */
 194   return dissect_ssprotocol_message(message_tvb, pinfo, ssprotocol_tree);
 195 }
 196
 197
 198 /* TAP STAT INFO */
 199 typedef enum
 200 {
 201   MESSAGE_TYPE_COLUMN = 0,
 202   MESSAGES_COLUMN,
 203   MESSAGES_SHARE_COLUMN,
 204   BYTES_COLUMN,
 205   BYTES_SHARE_COLUMN,
 206   FIRST_SEEN_COLUMN,
 207   LAST_SEEN_COLUMN,
 208   INTERVAL_COLUMN,
 209   MESSAGE_RATE_COLUMN,
 210   BYTE_RATE_COLUMN
 211 } ssprotocol_stat_columns;
 212
 213 static stat_tap_table_item ssprotocol_stat_fields[] = {
 214   { TABLE_ITEM_STRING, TAP_ALIGN_LEFT,  "ScriptingServiceProtocol Message Type", "%-25s" },
 215   { TABLE_ITEM_UINT,   TAP_ALIGN_RIGHT, "Messages ",            "%u"       },
 216   { TABLE_ITEM_UINT,   TAP_ALIGN_RIGHT, "Messages Share (%)"  , "%1.3f %%" },
 217   { TABLE_ITEM_UINT,   TAP_ALIGN_RIGHT, "Bytes (B)",            "%u"       },
 218   { TABLE_ITEM_UINT,   TAP_ALIGN_RIGHT, "Bytes Share (%) ",     "%1.3f %%" },
 219   { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "First Seen (s)",       "%1.6f"    },
 220   { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Last Seen (s)",        "%1.6f"    },
 221   { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Interval (s)",         "%1.6f"    },
 222   { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Message Rate (Msg/s)", "%1.2f"    },
 223   { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Byte Rate (B/s)",      "%1.2f"    }
 224 };
 225
 226 static void ssprotocol_stat_init(stat_tap_table_ui* new_stat)
 227 {
 228   const char *table_name = "ScriptingServiceProtocol Statistics";
 229   int num_fields = array_length(ssprotocol_stat_fields);
 230   stat_tap_table *table;
 231   int i = 0;
 232   stat_tap_table_item_type items[array_length(ssprotocol_stat_fields)];
 233
 234   table = stat_tap_find_table(new_stat, table_name);
 235   if (table) {
 236     if (new_stat->stat_tap_reset_table_cb) {
 237       new_stat->stat_tap_reset_table_cb(table);
 238     }
 239     return;
 240   }
 241
 242   table = stat_tap_init_table(table_name, num_fields, 0, NULL);
 243   stat_tap_add_table(new_stat, table);
 244
 245   memset(items, 0x0, sizeof(items));
 246   /* Add a row for each value type */
 247   while (message_type_values[i].strptr) {
 248     items[MESSAGE_TYPE_COLUMN].type                = TABLE_ITEM_STRING;
 249     items[MESSAGE_TYPE_COLUMN].value.string_value  = message_type_values[i].strptr;
 250     items[MESSAGES_COLUMN].type                    = TABLE_ITEM_UINT;
 251     items[MESSAGES_COLUMN].value.uint_value        = 0;
 252     items[MESSAGES_SHARE_COLUMN].type              = TABLE_ITEM_NONE;
 253     items[MESSAGES_SHARE_COLUMN].value.float_value = -1.0;
 254     items[BYTES_COLUMN].type                       = TABLE_ITEM_UINT;
 255     items[BYTES_COLUMN].value.uint_value           = 0;
 256     items[BYTES_SHARE_COLUMN].type                 = TABLE_ITEM_NONE;
 257     items[BYTES_SHARE_COLUMN].value.float_value    = -1.0;
 258     items[FIRST_SEEN_COLUMN].type                  = TABLE_ITEM_NONE;
 259     items[FIRST_SEEN_COLUMN].value.float_value     = DBL_MAX;
 260     items[LAST_SEEN_COLUMN].type                   = TABLE_ITEM_NONE;
 261     items[LAST_SEEN_COLUMN].value.float_value      = DBL_MIN;
 262     items[INTERVAL_COLUMN].type                    = TABLE_ITEM_NONE;
 263     items[INTERVAL_COLUMN].value.float_value       = -1.0;
 264     items[MESSAGE_RATE_COLUMN].type                = TABLE_ITEM_NONE;
 265     items[MESSAGE_RATE_COLUMN].value.float_value   = -1.0;
 266     items[BYTE_RATE_COLUMN].type                   = TABLE_ITEM_NONE;
 267     items[BYTE_RATE_COLUMN].value.float_value      = -1.0;
 268     stat_tap_init_table_row(table, i, num_fields, items);
 269     i++;
 270   }
 271 }
 272
 273 static tap_packet_status
 274 ssprotocol_stat_packet(void* tapdata, packet_info* pinfo _U_, epan_dissect_t* edt _U_, const void* data, tap_flags_t flags _U_)
 275 {
 276   stat_data_t*                stat_data = (stat_data_t*)tapdata;
 277   const tap_ssprotocol_rec_t* tap_rec   = (const tap_ssprotocol_rec_t*)data;
 278   stat_tap_table*             table;
 279   stat_tap_table_item_type*   msg_data;
 280   int                         idx;
 281   uint64_t                    messages;
 282   uint64_t                    bytes;
 283   int                         i         = 0;
 284   double                      firstSeen = -1.0;
 285   double                      lastSeen  = -1.0;
 286
 287   idx = str_to_val_idx(tap_rec->type_string, message_type_values);
 288   if (idx < 0)
 289     return TAP_PACKET_DONT_REDRAW;
 290
 291   table = g_array_index(stat_data->stat_tap_data->tables, stat_tap_table*, 0);
 292
 293   /* Update packets counter */
 294   ssprotocol_total_msgs++;
 295   msg_data = stat_tap_get_field_data(table, idx, MESSAGES_COLUMN);
 296   msg_data->value.uint_value++;
 297   messages = msg_data->value.uint_value;
 298   stat_tap_set_field_data(table, idx, MESSAGES_COLUMN, msg_data);
 299
 300   /* Update bytes counter */
 301   ssprotocol_total_bytes += tap_rec->size;
 302   msg_data = stat_tap_get_field_data(table, idx, BYTES_COLUMN);
 303   msg_data->value.uint_value += tap_rec->size;
 304   bytes = msg_data->value.uint_value;
 305   stat_tap_set_field_data(table, idx, BYTES_COLUMN, msg_data);
 306
 307   /* Update messages and bytes share */
 308   while (message_type_values[i].strptr) {
 309     msg_data = stat_tap_get_field_data(table, i, MESSAGES_COLUMN);
 310     const unsigned m = msg_data->value.uint_value;
 311     msg_data = stat_tap_get_field_data(table, i, BYTES_COLUMN);
 312     const unsigned b = msg_data->value.uint_value;
 313
 314     msg_data = stat_tap_get_field_data(table, i, MESSAGES_SHARE_COLUMN);
 315     msg_data->type = TABLE_ITEM_FLOAT;
 316     msg_data->value.float_value = 100.0 * m / (double)ssprotocol_total_msgs;
 317     stat_tap_set_field_data(table, i, MESSAGES_SHARE_COLUMN, msg_data);
 318
 319     msg_data = stat_tap_get_field_data(table, i, BYTES_SHARE_COLUMN);
 320     msg_data->type = TABLE_ITEM_FLOAT;
 321     msg_data->value.float_value = 100.0 * b / (double)ssprotocol_total_bytes;
 322     stat_tap_set_field_data(table, i, BYTES_SHARE_COLUMN, msg_data);
 323     i++;
 324   }
 325
 326   /* Update first seen time */
 327   if (pinfo->presence_flags & PINFO_HAS_TS) {
 328     msg_data = stat_tap_get_field_data(table, idx, FIRST_SEEN_COLUMN);
 329     msg_data->type = TABLE_ITEM_FLOAT;
 330     msg_data->value.float_value = MIN(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts));
 331     firstSeen = msg_data->value.float_value;
 332     stat_tap_set_field_data(table, idx, FIRST_SEEN_COLUMN, msg_data);
 333   }
 334
 335   /* Update last seen time */
 336   if (pinfo->presence_flags & PINFO_HAS_TS) {
 337     msg_data = stat_tap_get_field_data(table, idx, LAST_SEEN_COLUMN);
 338     msg_data->type = TABLE_ITEM_FLOAT;
 339     msg_data->value.float_value = MAX(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts));
 340     lastSeen = msg_data->value.float_value;
 341     stat_tap_set_field_data(table, idx, LAST_SEEN_COLUMN, msg_data);
 342   }
 343
 344   if ((lastSeen - firstSeen) > 0.0) {
 345     /* Update interval */
 346     msg_data = stat_tap_get_field_data(table, idx, INTERVAL_COLUMN);
 347     msg_data->type = TABLE_ITEM_FLOAT;
 348     msg_data->value.float_value = lastSeen - firstSeen;
 349     stat_tap_set_field_data(table, idx, INTERVAL_COLUMN, msg_data);
 350
 351     /* Update message rate */
 352     msg_data = stat_tap_get_field_data(table, idx, MESSAGE_RATE_COLUMN);
 353     msg_data->type = TABLE_ITEM_FLOAT;
 354     msg_data->value.float_value = messages / (lastSeen - firstSeen);
 355     stat_tap_set_field_data(table, idx, MESSAGE_RATE_COLUMN, msg_data);
 356
 357     /* Update byte rate */
 358     msg_data = stat_tap_get_field_data(table, idx, BYTE_RATE_COLUMN);
 359     msg_data->type = TABLE_ITEM_FLOAT;
 360     msg_data->value.float_value = bytes / (lastSeen - firstSeen);
 361     stat_tap_set_field_data(table, idx, BYTE_RATE_COLUMN, msg_data);
 362   }
 363
 364   return TAP_PACKET_REDRAW;
 365 }
 366
 367 static void
 368 ssprotocol_stat_reset(stat_tap_table* table)
 369 {
 370   unsigned element;
 371   stat_tap_table_item_type* item_data;
 372
 373   for (element = 0; element < table->num_elements; element++) {
 374     item_data = stat_tap_get_field_data(table, element, MESSAGES_COLUMN);
 375     item_data->value.uint_value = 0;
 376     stat_tap_set_field_data(table, element, MESSAGES_COLUMN, item_data);
 377
 378     item_data = stat_tap_get_field_data(table, element, MESSAGES_SHARE_COLUMN);
 379     item_data->type = TABLE_ITEM_NONE;
 380     item_data->value.float_value = -1.0;
 381     stat_tap_set_field_data(table, element, MESSAGES_SHARE_COLUMN, item_data);
 382
 383     item_data = stat_tap_get_field_data(table, element, BYTES_COLUMN);
 384     item_data->value.uint_value = 0;
 385     stat_tap_set_field_data(table, element, BYTES_COLUMN, item_data);
 386
 387     item_data = stat_tap_get_field_data(table, element, BYTES_SHARE_COLUMN);
 388     item_data->type = TABLE_ITEM_NONE;
 389     item_data->value.float_value = -1.0;
 390     stat_tap_set_field_data(table, element, BYTES_SHARE_COLUMN, item_data);
 391
 392     item_data = stat_tap_get_field_data(table, element, FIRST_SEEN_COLUMN);
 393     item_data->type = TABLE_ITEM_NONE;
 394     item_data->value.float_value = DBL_MAX;
 395     stat_tap_set_field_data(table, element, FIRST_SEEN_COLUMN, item_data);
 396
 397     item_data = stat_tap_get_field_data(table, element, LAST_SEEN_COLUMN);
 398     item_data->type = TABLE_ITEM_NONE;
 399     item_data->value.float_value = DBL_MIN;
 400     stat_tap_set_field_data(table, element, LAST_SEEN_COLUMN, item_data);
 401
 402     item_data = stat_tap_get_field_data(table, element, INTERVAL_COLUMN);
 403     item_data->type = TABLE_ITEM_NONE;
 404     item_data->value.float_value = -1.0;
 405     stat_tap_set_field_data(table, element, INTERVAL_COLUMN, item_data);
 406
 407     item_data = stat_tap_get_field_data(table, element, MESSAGE_RATE_COLUMN);
 408     item_data->type = TABLE_ITEM_NONE;
 409     item_data->value.float_value = -1.0;
 410     stat_tap_set_field_data(table, element, MESSAGE_RATE_COLUMN, item_data);
 411
 412     item_data = stat_tap_get_field_data(table, element, BYTE_RATE_COLUMN);
 413     item_data->type = TABLE_ITEM_NONE;
 414     item_data->value.float_value = -1.0;
 415     stat_tap_set_field_data(table, element, BYTE_RATE_COLUMN, item_data);
 416   }
 417   ssprotocol_total_msgs  = 0;
 418   ssprotocol_total_bytes = 0;
 419 }
 420
 421
 422 /* Register the protocol */
 423 void
 424 proto_register_ssprotocol(void)
 425 {
 426
 427   /* Setup list of header fields */
 428   static hf_register_info hf[] = {
 429     { &hf_message_type,      { "Type",   "ssp.message_type",   FT_UINT8,  BASE_DEC,  VALS(message_type_values),  0x0, NULL, HFILL } },
 430     { &hf_message_flags,     { "Flags",  "ssp.message_flags",  FT_UINT8,  BASE_DEC,  NULL,                       0x0, NULL, HFILL } },
 431     { &hf_message_length,    { "Length", "ssp.message_length", FT_UINT16, BASE_DEC,  NULL,                       0x0, NULL, HFILL } },
 432     { &hf_message_status,    { "Status", "ssp.message_status", FT_UINT32, BASE_DEC,  NULL,                       0x0, NULL, HFILL } },
 433     { &hf_message_reason,    { "Reason", "ssp.message_reason", FT_UINT32, BASE_DEC,  VALS(notrdy_reason_values), 0x0, NULL, HFILL } },
 434     { &hf_message_info,      { "Info",   "ssp.message_info",   FT_STRING, BASE_NONE, NULL,                       0x0, NULL, HFILL } },
 435     { &hf_message_data,      { "Data",   "ssp.message_data",   FT_BYTES,  BASE_NONE, NULL,                       0x0, NULL, HFILL } },
 436     { &hf_message_hash,      { "Hash",   "ssp.message_hash",   FT_BYTES,  BASE_NONE, NULL,                       0x0, NULL, HFILL } },
 437     { &hf_environment_u_bit, { "U-Bit",  "ssp.environment_u_bit", FT_BOOLEAN, 8,TFS(&environment_u_bit), SSP_ENVIRONMENT_U_BIT, NULL, HFILL } }
 438   };
 439
 440   /* Setup protocol subtree array */
 441   static int *ett[] = {
 442     &ett_ssprotocol,
 443     &ett_environment_flags
 444   };
 445
 446   static tap_param ssprotocol_stat_params[] = {
 447     { PARAM_FILTER, "filter", "Filter", NULL, true }
 448   };
 449
 450   static stat_tap_table_ui ssprotocol_stat_table = {
 451     REGISTER_STAT_GROUP_RSERPOOL,
 452     "ScriptingServiceProtocol Statistics",
 453     "ssprotocol",
 454     "ssprotocol,stat",
 455     ssprotocol_stat_init,
 456     ssprotocol_stat_packet,
 457     ssprotocol_stat_reset,
 458     NULL,
 459     NULL,
 460     array_length(ssprotocol_stat_fields), ssprotocol_stat_fields,
 461     array_length(ssprotocol_stat_params), ssprotocol_stat_params,
 462     NULL,
 463     0
 464   };
 465
 466   /* Register the protocol name and description */
 467   proto_ssprotocol = proto_register_protocol("Scripting Service Protocol", "SSP", "ssp");
 468
 469   /* Required function calls to register the header fields and subtrees used */
 470   proto_register_field_array(proto_ssprotocol, hf, array_length(hf));
 471   proto_register_subtree_array(ett, array_length(ett));
 472   tap_ssprotocol = register_tap("ssprotocol");
 473
 474   /* Register the dissector handle */
 475   ssprotocol_handle = register_dissector("ssp", dissect_ssprotocol, proto_ssprotocol);
 476
 477   register_stat_tap_table_ui(&ssprotocol_stat_table);
 478 }
 479
 480 void
 481 proto_reg_handoff_ssprotocol(void)
 482 {
 483   dissector_add_uint("sctp.ppi", SSPROTOCOL_PAYLOAD_PROTOCOL_ID_LEGACY, ssprotocol_handle);
 484   dissector_add_uint("sctp.ppi", SSP_PAYLOAD_PROTOCOL_ID, ssprotocol_handle);
 485 }
 486
 487 /*
 488  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 489  *
 490  * Local Variables:
 491  * c-basic-offset: 2
 492  * tab-width: 8
 493  * indent-tabs-mode: nil
 494  * End:
 495  *
 496  * ex: set shiftwidth=2 tabstop=8 expandtab:
 497  * :indentSize=2:tabSize=8:noTabs=true:
 498  */