epan/dissectors/packet-nano.c

   1 /* packet-nano.c
   2  * Routines for Nano / RaiBlocks dissection
   3  * Copyright 2018, Roland Haenel <roland@haenel.me>
   4  *
   5  * Wireshark - Network traffic analyzer
   6  * By Gerald Combs <gerald@wireshark.org>
   7  * Copyright 1998 Gerald Combs
   8  *
   9  * SPDX-License-Identifier: GPL-2.0-or-later
  10  */
  11
  12 /*
  13  * For information about Nano / RaiBlocks, go to http://www.nano.org
  14  */
  15
  16 #include <config.h>
  17
  18 #include <conversation.h>
  19 #include "packet-tcp.h"
  20 #include <proto_data.h>
  21
  22 #include <epan/packet.h>
  23 #include <epan/to_str.h>
  24 #include <wsutil/str_util.h>
  25
  26 void proto_reg_handoff_nano(void);
  27 void proto_register_nano(void);
  28
  29 static dissector_handle_t nano_handle, nano_tcp_handle;
  30
  31 static int proto_nano;
  32
  33 static int hf_nano_magic_number;
  34 static int hf_nano_version_max;
  35 static int hf_nano_version_using;
  36 static int hf_nano_version_min;
  37 static int hf_nano_packet_type;
  38 static int hf_nano_extensions;
  39 static int hf_nano_extensions_block_type;
  40 static int hf_nano_keepalive_peer_ip;
  41 static int hf_nano_keepalive_peer_port;
  42
  43 static int hf_nano_block_hash_previous;
  44 static int hf_nano_block_hash_source;
  45 static int hf_nano_block_signature;
  46 static int hf_nano_block_work;
  47 static int hf_nano_block_destination_account;
  48 static int hf_nano_block_balance;
  49 static int hf_nano_block_account;
  50 static int hf_nano_block_representative_account;
  51 static int hf_nano_block_link;
  52
  53 static int hf_nano_vote_account;
  54 static int hf_nano_vote_signature;
  55 static int hf_nano_vote_sequence;
  56
  57 static int hf_nano_bulk_pull_account;
  58 static int hf_nano_bulk_pull_block_hash_end;
  59
  60 static int hf_nano_frontier_req_account;
  61 static int hf_nano_frontier_req_age;
  62 static int hf_nano_frontier_req_count;
  63
  64 static int hf_nano_bulk_pull_blocks_min_hash;
  65 static int hf_nano_bulk_pull_blocks_max_hash;
  66 static int hf_nano_bulk_pull_blocks_mode;
  67 static int hf_nano_bulk_pull_blocks_max_count;
  68
  69 static int hf_nano_bulk_push_block_type;
  70
  71 static int hf_nano_bulk_pull_block_type;
  72
  73 static int hf_nano_frontier_account;
  74 static int hf_nano_frontier_head_hash;
  75
  76 static int ett_nano;
  77 static int ett_nano_header;
  78 static int ett_nano_extensions;
  79 static int ett_nano_peers;
  80 static int ett_nano_peer_details[8];
  81 static int ett_nano_block;
  82 static int ett_nano_vote;
  83 static int ett_nano_bulk_pull;
  84 static int ett_nano_frontier_req;
  85 static int ett_nano_bulk_pull_blocks;
  86 static int ett_nano_frontier;
  87
  88 #define NANO_PACKET_TYPE_INVALID 0
  89 #define NANO_PACKET_TYPE_NOT_A_TYPE 1
  90 #define NANO_PACKET_TYPE_KEEPALIVE 2
  91 #define NANO_PACKET_TYPE_PUBLISH 3
  92 #define NANO_PACKET_TYPE_CONFIRM_REQ 4
  93 #define NANO_PACKET_TYPE_CONFIRM_ACK 5
  94 #define NANO_PACKET_TYPE_BULK_PULL 6
  95 #define NANO_PACKET_TYPE_BULK_PUSH 7
  96 #define NANO_PACKET_TYPE_FRONTIER_REQ 8
  97 #define NANO_PACKET_TYPE_BULK_PULL_BLOCKS 9
  98
  99 static const value_string nano_packet_type_strings[] = {
 100   { NANO_PACKET_TYPE_INVALID, "Invalid" },
 101   { NANO_PACKET_TYPE_NOT_A_TYPE, "Not A Type" },
 102   { NANO_PACKET_TYPE_KEEPALIVE, "Keepalive" },
 103   { NANO_PACKET_TYPE_PUBLISH, "Publish" },
 104   { NANO_PACKET_TYPE_CONFIRM_REQ, "Confirm Req" },
 105   { NANO_PACKET_TYPE_CONFIRM_ACK, "Confirm Ack" },
 106   { NANO_PACKET_TYPE_BULK_PULL, "Bulk Pull" },
 107   { NANO_PACKET_TYPE_BULK_PUSH, "Bulk Push" },
 108   { NANO_PACKET_TYPE_FRONTIER_REQ, "Frontier Req" },
 109   { NANO_PACKET_TYPE_BULK_PULL_BLOCKS, "Bulk Pull Blocks" },
 110   { 0, NULL },
 111 };
 112
 113 #define NANO_BLOCK_TYPE_INVALID 0
 114 #define NANO_BLOCK_TYPE_NOT_A_BLOCK 1
 115 #define NANO_BLOCK_TYPE_SEND 2
 116 #define NANO_BLOCK_TYPE_RECEIVE 3
 117 #define NANO_BLOCK_TYPE_OPEN 4
 118 #define NANO_BLOCK_TYPE_CHANGE 5
 119 #define NANO_BLOCK_TYPE_STATE 6
 120
 121 static const value_string nano_block_type_strings[] = {
 122   { NANO_BLOCK_TYPE_INVALID, "Invalid" },
 123   { NANO_BLOCK_TYPE_NOT_A_BLOCK, "Not A Block" },
 124   { NANO_BLOCK_TYPE_SEND, "Send" },
 125   { NANO_BLOCK_TYPE_RECEIVE, "Receive" },
 126   { NANO_BLOCK_TYPE_OPEN, "Open" },
 127   { NANO_BLOCK_TYPE_CHANGE, "Change" },
 128   { NANO_BLOCK_TYPE_STATE, "State" },
 129   { 0, NULL },
 130 };
 131
 132 static const string_string nano_magic_numbers[] = {
 133     { "RA", "Nano Test Network" },
 134     { "RB", "Nano Beta Network" },
 135     { "RC", "Nano Production Network" },
 136     { NULL, NULL }
 137 };
 138
 139 #define NANO_BULK_PULL_BLOCKS_MODE_LIST_BLOCKS 0
 140 #define NANO_BULK_PULL_BLOCKS_MODE_CHECKSUM_BLOCKS 1
 141
 142 static const value_string nano_bulk_pull_blocks_mode_strings[] = {
 143   { NANO_BULK_PULL_BLOCKS_MODE_LIST_BLOCKS, "List Blocks" },
 144   { NANO_BULK_PULL_BLOCKS_MODE_CHECKSUM_BLOCKS, "Checksum Blocks" },
 145   { 0, NULL },
 146 };
 147
 148 #define NANO_UDP_PORT 7075 /* Not IANA registered */
 149 #define NANO_TCP_PORT 7075 /* Not IANA registered */
 150
 151 #define NANO_BLOCK_SIZE_SEND    (32+32+16+64+8)
 152 #define NANO_BLOCK_SIZE_RECEIVE (32+32+64+8)
 153 #define NANO_BLOCK_SIZE_OPEN    (32+32+32+64+8)
 154 #define NANO_BLOCK_SIZE_CHANGE  (32+32+64+8)
 155 #define NANO_BLOCK_SIZE_STATE   (32+32+32+16+32+64+8)
 156
 157 // Nano header length, and thus minimum length of any Nano UDP packet (or bootstrap request)
 158 #define NANO_HEADER_LENGTH 8
 159
 160 // Nano bootstrap session state
 161 struct nano_session_state {
 162     int client_packet_type;
 163     uint32_t server_port;
 164 };
 165
 166
 167 // dissect the inside of a keepalive packet (that is, the neighbor nodes)
 168 static int dissect_nano_keepalive(tvbuff_t *tvb, packet_info *pinfo, proto_tree *nano_tree, int offset)
 169 {
 170     proto_item *ti;
 171     proto_tree *peer_tree, *peer_entry_tree;
 172     int i, peers;
 173     ws_in6_addr ip_addr;
 174     uint32_t port;
 175     char buf[100];
 176
 177     peer_tree = proto_tree_add_subtree(nano_tree, tvb, offset, 8*(16+2), ett_nano_peers, NULL, "Peer List");
 178
 179     peers = 0;
 180     for (i = 0; i < 8; i++) {
 181         peer_entry_tree = proto_tree_add_subtree(peer_tree, tvb, offset, 18, ett_nano_peer_details[i], &ti, "Peer");
 182
 183         tvb_get_ipv6(tvb, offset, &ip_addr);
 184         proto_tree_add_item(peer_entry_tree, hf_nano_keepalive_peer_ip, tvb, offset, 16, ENC_NA);
 185         offset += 16;
 186
 187         proto_tree_add_item_ret_uint(peer_entry_tree, hf_nano_keepalive_peer_port, tvb, offset, 2, ENC_LITTLE_ENDIAN, &port);
 188         offset += 2;
 189
 190         if (!memcmp(&ip_addr, "\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0", 16)) {
 191             proto_item_append_text(ti, ": (none)");
 192         } else if (!memcmp(&ip_addr, "\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\xff\xff", 12)) {
 193             ip_addr_to_str_buf((ws_in4_addr *)((uint8_t *)&ip_addr + 12), buf, sizeof(buf));
 194             proto_item_append_text(ti, ": %s:%d", buf, port);
 195             peers++;
 196         } else {
 197             ip6_to_str_buf(&ip_addr, buf, sizeof(buf));
 198             proto_item_append_text(ti, ": [%s]:%d", buf, port);
 199             peers++;
 200         }
 201     }
 202
 203     col_add_fstr(pinfo->cinfo, COL_INFO, "Keepalive (%d peer%s)", peers, plurality(peers, "", "s"));
 204
 205     return offset;
 206 }
 207
 208 // dissect a receive block
 209 static int dissect_nano_receive_block(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 210 {
 211     proto_tree *block_tree;
 212
 213     block_tree = proto_tree_add_subtree(nano_tree, tvb, offset, NANO_BLOCK_SIZE_RECEIVE, ett_nano_block, NULL, "Receive Block");
 214
 215     proto_tree_add_item(block_tree, hf_nano_block_hash_previous, tvb, offset, 32, ENC_NA);
 216     offset += 32;
 217
 218     proto_tree_add_item(block_tree, hf_nano_block_hash_source, tvb, offset, 32, ENC_NA);
 219     offset += 32;
 220
 221     proto_tree_add_item(block_tree, hf_nano_block_signature, tvb, offset, 64, ENC_NA);
 222     offset += 64;
 223
 224     proto_tree_add_item(block_tree, hf_nano_block_work, tvb, offset, 8, ENC_NA);
 225     offset += 8;
 226
 227     return offset;
 228 }
 229
 230 // dissect a send block
 231 static int dissect_nano_send_block(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 232 {
 233     proto_tree *block_tree;
 234
 235     block_tree = proto_tree_add_subtree(nano_tree, tvb, offset, NANO_BLOCK_SIZE_SEND, ett_nano_block, NULL, "Send Block");
 236
 237     proto_tree_add_item(block_tree, hf_nano_block_hash_previous, tvb, offset, 32, ENC_NA);
 238     offset += 32;
 239
 240     proto_tree_add_item(block_tree, hf_nano_block_destination_account, tvb, offset, 32, ENC_NA);
 241     offset += 32;
 242
 243     proto_tree_add_item(block_tree, hf_nano_block_balance, tvb, offset, 16, ENC_NA);
 244     offset += 16;
 245
 246     proto_tree_add_item(block_tree, hf_nano_block_signature, tvb, offset, 64, ENC_NA);
 247     offset += 64;
 248
 249     proto_tree_add_item(block_tree, hf_nano_block_work, tvb, offset, 8, ENC_NA);
 250     offset += 8;
 251
 252     return offset;
 253 }
 254
 255 // dissect an open block
 256 static int dissect_nano_open_block(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 257 {
 258     proto_tree *block_tree;
 259
 260     block_tree = proto_tree_add_subtree(nano_tree, tvb, offset, NANO_BLOCK_SIZE_OPEN, ett_nano_block, NULL, "Open Block");
 261
 262     proto_tree_add_item(block_tree, hf_nano_block_hash_source, tvb, offset, 32, ENC_NA);
 263     offset += 32;
 264
 265     proto_tree_add_item(block_tree, hf_nano_block_representative_account, tvb, offset, 32, ENC_NA);
 266     offset += 32;
 267
 268     proto_tree_add_item(block_tree, hf_nano_block_account, tvb, offset, 32, ENC_NA);
 269     offset += 32;
 270
 271     proto_tree_add_item(block_tree, hf_nano_block_signature, tvb, offset, 64, ENC_NA);
 272     offset += 64;
 273
 274     proto_tree_add_item(block_tree, hf_nano_block_work, tvb, offset, 8, ENC_NA);
 275     offset += 8;
 276
 277     return offset;
 278 }
 279
 280 // dissect an change block
 281 static int dissect_nano_change_block(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 282 {
 283     proto_tree *block_tree;
 284
 285     block_tree = proto_tree_add_subtree(nano_tree, tvb, offset, NANO_BLOCK_SIZE_CHANGE, ett_nano_block, NULL, "Change Block");
 286
 287     proto_tree_add_item(block_tree, hf_nano_block_hash_previous, tvb, offset, 32, ENC_NA);
 288     offset += 32;
 289
 290     proto_tree_add_item(block_tree, hf_nano_block_representative_account, tvb, offset, 32, ENC_NA);
 291     offset += 32;
 292
 293     proto_tree_add_item(block_tree, hf_nano_block_signature, tvb, offset, 64, ENC_NA);
 294     offset += 64;
 295
 296     proto_tree_add_item(block_tree, hf_nano_block_work, tvb, offset, 8, ENC_NA);
 297     offset += 8;
 298
 299     return offset;
 300 }
 301
 302 // dissect a state block
 303 static int dissect_nano_state(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 304 {
 305     proto_tree *block_tree;
 306
 307     block_tree = proto_tree_add_subtree(nano_tree, tvb, offset, NANO_BLOCK_SIZE_STATE, ett_nano_block, NULL, "State Block");
 308
 309     proto_tree_add_item(block_tree, hf_nano_block_account, tvb, offset, 32, ENC_NA);
 310     offset += 32;
 311
 312     proto_tree_add_item(block_tree, hf_nano_block_hash_previous, tvb, offset, 32, ENC_NA);
 313     offset += 32;
 314
 315     proto_tree_add_item(block_tree, hf_nano_block_representative_account, tvb, offset, 32, ENC_NA);
 316     offset += 32;
 317
 318     proto_tree_add_item(block_tree, hf_nano_block_balance, tvb, offset, 16, ENC_NA);
 319     offset += 16;
 320
 321     proto_tree_add_item(block_tree, hf_nano_block_link, tvb, offset, 32, ENC_NA);
 322     offset += 32;
 323
 324     proto_tree_add_item(block_tree, hf_nano_block_signature, tvb, offset, 64, ENC_NA);
 325     offset += 64;
 326
 327     proto_tree_add_item(block_tree, hf_nano_block_work, tvb, offset, 8, ENC_NA);
 328     offset += 8;
 329
 330     return offset;
 331 }
 332
 333 // dissect a vote
 334 static int dissect_nano_vote(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 335 {
 336     proto_tree *vote_tree;
 337
 338     vote_tree = proto_tree_add_subtree(nano_tree, tvb, offset, 32+64+8, ett_nano_block, NULL, "Vote");
 339
 340     proto_tree_add_item(vote_tree, hf_nano_vote_account, tvb, offset, 32, ENC_NA);
 341     offset += 32;
 342
 343     proto_tree_add_item(vote_tree, hf_nano_vote_signature, tvb, offset, 64, ENC_NA);
 344     offset += 64;
 345
 346     proto_tree_add_item(vote_tree, hf_nano_vote_sequence, tvb, offset, 8, ENC_LITTLE_ENDIAN);
 347     offset += 8;
 348
 349     return offset;
 350 }
 351
 352 // dissect a Nano protocol header, fills in the values
 353 // for nano_packet_type, nano_block_type
 354 static int dissect_nano_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *nano_tree, int offset, unsigned *nano_packet_type, uint64_t *extensions)
 355 {
 356     proto_tree *header_tree;
 357     char *nano_magic_number;
 358     static int * const nano_extensions[] = {
 359         &hf_nano_extensions_block_type,
 360         NULL
 361     };
 362
 363     header_tree = proto_tree_add_subtree(nano_tree, tvb, offset, NANO_HEADER_LENGTH, ett_nano_header, NULL, "Nano Protocol Header");
 364
 365     nano_magic_number = tvb_get_string_enc(pinfo->pool, tvb, offset, 2, ENC_ASCII);
 366     proto_tree_add_string_format_value(header_tree, hf_nano_magic_number, tvb, 0,
 367             2, nano_magic_number, "%s (%s)", str_to_str(nano_magic_number, nano_magic_numbers, "Unknown"), nano_magic_number);
 368     offset += 2;
 369
 370     proto_tree_add_item(header_tree, hf_nano_version_max, tvb, offset, 1, ENC_NA);
 371     offset += 1;
 372
 373     proto_tree_add_item(header_tree, hf_nano_version_using, tvb, offset, 1, ENC_NA);
 374     offset += 1;
 375
 376     proto_tree_add_item(header_tree, hf_nano_version_min, tvb, offset, 1, ENC_NA);
 377     offset += 1;
 378
 379     proto_tree_add_item_ret_uint(header_tree, hf_nano_packet_type, tvb, offset, 1, ENC_NA, nano_packet_type);
 380     offset += 1;
 381
 382     proto_tree_add_bitmask_ret_uint64(header_tree, tvb, offset, hf_nano_extensions, ett_nano_extensions, nano_extensions, ENC_LITTLE_ENDIAN, extensions);
 383     offset += 2;
 384
 385     return offset;
 386 }
 387
 388 // dissect a Nano packet (UDP)
 389 static int dissect_nano(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
 390 {
 391     proto_item *ti;
 392     proto_tree *nano_tree;
 393     unsigned nano_packet_type, nano_block_type, offset;
 394     uint64_t extensions;
 395
 396     /* Check that the packet is long enough for it to belong to us. */
 397     if (tvb_reported_length(tvb) < NANO_HEADER_LENGTH)
 398         return 0;
 399
 400     col_set_str(pinfo->cinfo, COL_PROTOCOL, "Nano");
 401     col_clear(pinfo->cinfo, COL_INFO);
 402
 403     ti = proto_tree_add_item(tree, proto_nano, tvb, 0, -1, ENC_NA);
 404     nano_tree = proto_item_add_subtree(ti, ett_nano);
 405
 406     offset = dissect_nano_header(tvb, pinfo, nano_tree, 0, &nano_packet_type, &extensions);
 407
 408     // call specific dissectors for specific packet types
 409     switch (nano_packet_type) {
 410         case NANO_PACKET_TYPE_KEEPALIVE:
 411             return dissect_nano_keepalive(tvb, pinfo, nano_tree, offset);
 412
 413         case NANO_PACKET_TYPE_PUBLISH:
 414         case NANO_PACKET_TYPE_CONFIRM_REQ:
 415         case NANO_PACKET_TYPE_CONFIRM_ACK:
 416
 417             // set the INFO header with more information
 418             nano_block_type = (unsigned)((extensions >> 8) & 0xF);
 419             col_add_fstr(pinfo->cinfo, COL_INFO, "%s (%s)",
 420                     val_to_str_const(nano_packet_type, VALS(nano_packet_type_strings), " "),
 421                     val_to_str(nano_block_type, VALS(nano_block_type_strings), "Unknown (%d)"));
 422
 423             // if it's a Confirm Ack packet, we first have a vote
 424             if (nano_packet_type == NANO_PACKET_TYPE_CONFIRM_ACK) {
 425                 offset = dissect_nano_vote(tvb, nano_tree, offset);
 426             }
 427
 428             // dissect the actual block
 429             switch (nano_block_type) {
 430                 case NANO_BLOCK_TYPE_RECEIVE:
 431                     dissect_nano_receive_block(tvb, nano_tree, offset);
 432                     break;
 433                 case NANO_BLOCK_TYPE_SEND:
 434                     dissect_nano_send_block(tvb, nano_tree, offset);
 435                     break;
 436                 case NANO_BLOCK_TYPE_OPEN:
 437                     dissect_nano_open_block(tvb, nano_tree, offset);
 438                     break;
 439                 case NANO_BLOCK_TYPE_CHANGE:
 440                     dissect_nano_change_block(tvb, nano_tree, offset);
 441                     break;
 442                 case NANO_BLOCK_TYPE_STATE:
 443                     dissect_nano_state(tvb, nano_tree, offset);
 444                     break;
 445             }
 446             break;
 447
 448         default:
 449             col_add_str(pinfo->cinfo, COL_INFO,
 450                     val_to_str(nano_packet_type, VALS(nano_packet_type_strings), "Unknown (%d)"));
 451     }
 452
 453     return tvb_captured_length(tvb);
 454 }
 455
 456 // determine the length of a nano bootstrap message (client)
 457 static unsigned get_nano_tcp_client_message_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
 458 {
 459     int nano_packet_type, nano_block_type;
 460     struct nano_session_state *session_state;
 461
 462     session_state = (struct nano_session_state *)data;
 463     if (session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PUSH) {
 464         // we're in the middle of a bulk push, so we expect a block type (uint8) and a block
 465
 466         nano_block_type = tvb_get_uint8(tvb, offset);
 467         switch (nano_block_type) {
 468             case NANO_BLOCK_TYPE_NOT_A_BLOCK:
 469                 return 1;
 470             case NANO_BLOCK_TYPE_SEND:
 471                 return 1 + NANO_BLOCK_SIZE_SEND;
 472             case NANO_BLOCK_TYPE_RECEIVE:
 473                 return 1 + NANO_BLOCK_SIZE_RECEIVE;
 474             case NANO_BLOCK_TYPE_OPEN:
 475                 return 1 + NANO_BLOCK_SIZE_OPEN;
 476             case NANO_BLOCK_TYPE_CHANGE:
 477                 return 1 + NANO_BLOCK_SIZE_CHANGE;
 478             case NANO_BLOCK_TYPE_STATE:
 479                 return 1 + NANO_BLOCK_SIZE_STATE;
 480             default:
 481                 // this is invalid
 482                 return tvb_captured_length(tvb) - offset;
 483         }
 484     }
 485
 486     // we expect a client command, this starts with a full Nano header
 487     if (tvb_captured_length(tvb) - offset < NANO_HEADER_LENGTH) {
 488         return 0;
 489     }
 490
 491     nano_packet_type = tvb_get_uint8(tvb, offset + 5);
 492
 493     switch (nano_packet_type) {
 494         case NANO_PACKET_TYPE_BULK_PULL:
 495             return NANO_HEADER_LENGTH + 32 + 32;
 496         case NANO_PACKET_TYPE_BULK_PUSH:
 497             return NANO_HEADER_LENGTH;
 498         case NANO_PACKET_TYPE_FRONTIER_REQ:
 499             return NANO_HEADER_LENGTH + 32 + 4 + 4;
 500         case NANO_PACKET_TYPE_BULK_PULL_BLOCKS:
 501             return NANO_HEADER_LENGTH + 32 + 32 + 1 + 4;
 502     }
 503
 504     return tvb_captured_length(tvb) - offset;
 505 }
 506
 507 // dissect a bulk pull request
 508 static int dissect_nano_bulk_pull(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 509 {
 510     proto_tree *vote_tree;
 511
 512     vote_tree = proto_tree_add_subtree(nano_tree, tvb, offset, 32+32, ett_nano_bulk_pull, NULL, "Bulk Pull");
 513
 514     proto_tree_add_item(vote_tree, hf_nano_bulk_pull_account, tvb, offset, 32, ENC_NA);
 515     offset += 32;
 516
 517     proto_tree_add_item(vote_tree, hf_nano_bulk_pull_block_hash_end, tvb, offset, 32, ENC_NA);
 518     offset += 32;
 519
 520     return offset;
 521 }
 522
 523 // dissect a frontier request
 524 static int dissect_nano_frontier_req(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 525 {
 526     proto_tree *vote_tree;
 527
 528     vote_tree = proto_tree_add_subtree(nano_tree, tvb, offset, 32+4+4, ett_nano_frontier_req, NULL, "Frontier Request");
 529
 530     proto_tree_add_item(vote_tree, hf_nano_frontier_req_account, tvb, offset, 32, ENC_NA);
 531     offset += 32;
 532
 533     proto_tree_add_item(vote_tree, hf_nano_frontier_req_age, tvb, offset, 4, ENC_LITTLE_ENDIAN);
 534     offset += 4;
 535
 536     proto_tree_add_item(vote_tree, hf_nano_frontier_req_count, tvb, offset, 4, ENC_LITTLE_ENDIAN);
 537     offset += 4;
 538
 539     return offset;
 540 }
 541
 542 // dissect a bulk pull blocks request
 543 static int dissect_nano_bulk_pull_blocks(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 544 {
 545     proto_tree *vote_tree;
 546
 547     vote_tree = proto_tree_add_subtree(nano_tree, tvb, offset, 32+4+4, ett_nano_frontier_req, NULL, "Bulk Pull Blocks");
 548
 549     proto_tree_add_item(vote_tree, hf_nano_bulk_pull_blocks_min_hash, tvb, offset, 32, ENC_NA);
 550     offset += 32;
 551
 552     proto_tree_add_item(vote_tree, hf_nano_bulk_pull_blocks_max_hash, tvb, offset, 32, ENC_NA);
 553     offset += 32;
 554
 555     proto_tree_add_item(nano_tree, hf_nano_bulk_pull_blocks_mode, tvb, offset, 1, ENC_NA);
 556     offset += 1;
 557
 558     proto_tree_add_item(vote_tree, hf_nano_bulk_pull_blocks_max_count, tvb, offset, 4, ENC_LITTLE_ENDIAN);
 559     offset += 4;
 560
 561     return offset;
 562 }
 563
 564 // dissect a single nano bootstrap message (client)
 565 static int dissect_nano_tcp_client_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, void *data _U_)
 566 {
 567     int offset, nano_packet_type, nano_block_type;
 568     uint64_t extensions;
 569     struct nano_session_state *session_state;
 570
 571     session_state = (struct nano_session_state *)data;
 572
 573     if (session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PUSH) {
 574         // we're within a bulk push
 575         col_set_str(pinfo->cinfo, COL_INFO, "Bulk Push ");
 576         proto_tree_add_item_ret_uint(tree, hf_nano_bulk_push_block_type, tvb, 0, 1, ENC_NA, &nano_block_type);
 577         switch (nano_block_type) {
 578             case NANO_BLOCK_TYPE_NOT_A_BLOCK:
 579                 session_state->client_packet_type = NANO_PACKET_TYPE_INVALID;
 580                 break;
 581             case NANO_BLOCK_TYPE_SEND:
 582                 dissect_nano_send_block(tvb, tree, 1);
 583                 break;
 584             case NANO_BLOCK_TYPE_RECEIVE:
 585                 dissect_nano_receive_block(tvb, tree, 1);
 586                 break;
 587             case NANO_BLOCK_TYPE_OPEN:
 588                 dissect_nano_open_block(tvb, tree, 1);
 589                 break;
 590             case NANO_BLOCK_TYPE_CHANGE:
 591                 dissect_nano_change_block(tvb, tree, 1);
 592                 break;
 593             case NANO_BLOCK_TYPE_STATE:
 594                 dissect_nano_state(tvb, tree, 1);
 595                 break;
 596         }
 597         return tvb_captured_length(tvb);
 598     }
 599
 600     // a bootstrap client command starts with a Nano header
 601     offset = dissect_nano_header(tvb, pinfo, tree, 0, &nano_packet_type, &extensions);
 602     session_state->client_packet_type = nano_packet_type;
 603
 604     switch (nano_packet_type) {
 605         case NANO_PACKET_TYPE_BULK_PULL:
 606             col_set_str(pinfo->cinfo, COL_INFO, "Bulk Pull Request ");
 607             dissect_nano_bulk_pull(tvb, tree, offset);
 608             break;
 609         case NANO_PACKET_TYPE_BULK_PUSH:
 610             col_set_str(pinfo->cinfo, COL_INFO, "Bulk Push Request ");
 611             break;
 612         case NANO_PACKET_TYPE_FRONTIER_REQ:
 613             col_set_str(pinfo->cinfo, COL_INFO, "Frontier Request ");
 614             dissect_nano_frontier_req(tvb, tree, offset);
 615             break;
 616         case NANO_PACKET_TYPE_BULK_PULL_BLOCKS:
 617             col_set_str(pinfo->cinfo, COL_INFO, "Bulk Pull Blocks Request ");
 618             dissect_nano_bulk_pull_blocks(tvb, tree, offset);
 619             break;
 620     }
 621
 622     return tvb_captured_length(tvb);
 623 }
 624
 625 // determine the length of a nano bootstrap message (server)
 626 static unsigned get_nano_tcp_server_message_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
 627 {
 628     int nano_block_type;
 629     struct nano_session_state *session_state;
 630
 631     session_state = (struct nano_session_state *)data;
 632
 633     if (session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PULL ||
 634         session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PULL_BLOCKS) {
 635         // we're in response to a bulk pull (blocks), so we expect a block type (uint8) and a block
 636
 637         nano_block_type = tvb_get_uint8(tvb, offset);
 638         switch (nano_block_type) {
 639             case NANO_BLOCK_TYPE_NOT_A_BLOCK:
 640                 return 1;
 641             case NANO_BLOCK_TYPE_SEND:
 642                 return 1 + NANO_BLOCK_SIZE_SEND;
 643             case NANO_BLOCK_TYPE_RECEIVE:
 644                 return 1 + NANO_BLOCK_SIZE_RECEIVE;
 645             case NANO_BLOCK_TYPE_OPEN:
 646                 return 1 + NANO_BLOCK_SIZE_OPEN;
 647             case NANO_BLOCK_TYPE_CHANGE:
 648                 return 1 + NANO_BLOCK_SIZE_CHANGE;
 649             case NANO_BLOCK_TYPE_STATE:
 650                 return 1 + NANO_BLOCK_SIZE_STATE;
 651             default:
 652                 // this is invalid
 653                 return tvb_captured_length(tvb) - offset;
 654         }
 655     }
 656
 657     if (session_state->client_packet_type == NANO_PACKET_TYPE_FRONTIER_REQ) {
 658         return 32 + 32;
 659     }
 660
 661     return tvb_captured_length(tvb) - offset;
 662 }
 663
 664 // dissect a frontier response entry
 665 static int dissect_nano_frontier(tvbuff_t *tvb, proto_tree *nano_tree, int offset)
 666 {
 667     proto_tree *frontier_tree;
 668
 669     frontier_tree = proto_tree_add_subtree(nano_tree, tvb, offset, 32+32, ett_nano_frontier, NULL, "Frontier");
 670
 671     proto_tree_add_item(frontier_tree, hf_nano_frontier_account, tvb, offset, 32, ENC_NA);
 672     offset += 32;
 673
 674     proto_tree_add_item(frontier_tree, hf_nano_frontier_head_hash, tvb, offset, 32, ENC_NA);
 675     offset += 32;
 676
 677     return offset;
 678 }
 679
 680 // dissect a single nano bootstrap message (server)
 681 static int dissect_nano_tcp_server_message(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_)
 682 {
 683     int nano_block_type;
 684     struct nano_session_state *session_state;
 685
 686     session_state = (struct nano_session_state *)data;
 687
 688     if (session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PULL ||
 689         session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PULL_BLOCKS) {
 690
 691         // we're within a bulk pull (blocks)
 692         col_set_str(pinfo->cinfo, COL_INFO, session_state->client_packet_type == NANO_PACKET_TYPE_BULK_PULL ? "Bulk Pull Response " : "Bulk Pull Blocks Response ");
 693
 694         proto_tree_add_item_ret_uint(tree, hf_nano_bulk_pull_block_type, tvb, 0, 1, ENC_NA, &nano_block_type);
 695         switch (nano_block_type) {
 696             case NANO_BLOCK_TYPE_NOT_A_BLOCK:
 697                 session_state->client_packet_type = NANO_PACKET_TYPE_INVALID;
 698                 break;
 699             case NANO_BLOCK_TYPE_SEND:
 700                 dissect_nano_send_block(tvb, tree, 1);
 701                 break;
 702             case NANO_BLOCK_TYPE_RECEIVE:
 703                 dissect_nano_receive_block(tvb, tree, 1);
 704                 break;
 705             case NANO_BLOCK_TYPE_OPEN:
 706                 dissect_nano_open_block(tvb, tree, 1);
 707                 break;
 708             case NANO_BLOCK_TYPE_CHANGE:
 709                 dissect_nano_change_block(tvb, tree, 1);
 710                 break;
 711             case NANO_BLOCK_TYPE_STATE:
 712                 dissect_nano_state(tvb, tree, 1);
 713                 break;
 714         }
 715         return tvb_captured_length(tvb);
 716     }
 717
 718     if (session_state->client_packet_type == NANO_PACKET_TYPE_FRONTIER_REQ) {
 719         col_set_str(pinfo->cinfo, COL_INFO, "Frontier Response ");
 720         dissect_nano_frontier(tvb, tree, 0);
 721     }
 722
 723     return tvb_captured_length(tvb);
 724 }
 725
 726 // dissect a Nano bootstrap packet (TCP)
 727 static int dissect_nano_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
 728 {
 729     int is_client;
 730     proto_item *ti;
 731     proto_tree *nano_tree;
 732     conversation_t *conversation;
 733     struct nano_session_state *session_state, *packet_session_state;
 734
 735     // try to find this conversation
 736     if ((conversation = find_conversation_pinfo(pinfo, 0)) == NULL) {
 737         // create new conversation
 738         conversation = conversation_new(pinfo->num, &pinfo->src, &pinfo->dst, conversation_pt_to_conversation_type(pinfo->ptype),
 739                 pinfo->srcport, pinfo->destport, 0);
 740     }
 741
 742     // try to find session state
 743     session_state = (struct nano_session_state *)conversation_get_proto_data(conversation, proto_nano);
 744     if (!session_state) {
 745         // create new session state
 746         session_state = wmem_new0(wmem_file_scope(), struct nano_session_state);
 747         session_state->client_packet_type = NANO_PACKET_TYPE_INVALID;
 748         session_state->server_port = pinfo->match_uint;
 749         conversation_add_proto_data(conversation, proto_nano, session_state);
 750     }
 751
 752     // check if we have a session state associated with the packet (start state for this packet)
 753     packet_session_state = (struct nano_session_state *)p_get_proto_data(wmem_file_scope(), pinfo, proto_nano, 0);
 754     if (!packet_session_state) {
 755         // this packet does not have a stored session state, get it from the conversation
 756         packet_session_state = wmem_new0(wmem_file_scope(), struct nano_session_state);
 757         memcpy(packet_session_state, session_state, sizeof(struct nano_session_state));
 758         p_add_proto_data(wmem_file_scope(), pinfo, proto_nano, 0, packet_session_state);
 759     } else {
 760         // this packet has a stored session state, take this as a starting point
 761         memcpy(session_state, packet_session_state, sizeof(struct nano_session_state));
 762     }
 763
 764     // set some columns to meaningful defaults
 765     col_set_str(pinfo->cinfo, COL_PROTOCOL, "Nano Bootstrap");
 766     col_clear(pinfo->cinfo, COL_INFO);
 767
 768     // add Nano protocol tree
 769     ti = proto_tree_add_item(tree, proto_nano, tvb, 0, -1, ENC_NA);
 770     nano_tree = proto_item_add_subtree(ti, ett_nano);
 771
 772     // is this a bootstrap client or server?
 773     is_client = pinfo->destport == session_state->server_port;
 774
 775     if (is_client) {
 776         // Nano bootstrap client
 777         tcp_dissect_pdus(tvb, pinfo, nano_tree, true, 1, get_nano_tcp_client_message_len, dissect_nano_tcp_client_message, session_state);
 778
 779     } else {
 780         // Nano bootstrap server
 781         tcp_dissect_pdus(tvb, pinfo, nano_tree, true, 1, get_nano_tcp_server_message_len, dissect_nano_tcp_server_message, session_state);
 782     }
 783
 784     return tvb_captured_length(tvb);
 785 }
 786
 787 /* Heuristics test */
 788 static bool test_nano(packet_info *pinfo _U_, tvbuff_t *tvb, int offset _U_, void *data _U_)
 789 {
 790     // if it's not a complete header length, it's not Nano.
 791     if (tvb_captured_length(tvb) < NANO_HEADER_LENGTH)
 792         return false;
 793
 794     // first byte must be 'R', second byte 'A' or 'B' or 'C'
 795     if (tvb_get_uint8(tvb, 0) != (uint8_t) 'R')
 796         return false;
 797
 798     char network = (char) tvb_get_uint8(tvb, 1);
 799     if (network != 'A' && network != 'B' && network != 'C')
 800         return false;
 801
 802     uint8_t version_max = tvb_get_uint8(tvb, 2);
 803     uint8_t version_using = tvb_get_uint8(tvb, 3);
 804     uint8_t version_min = tvb_get_uint8(tvb, 4);
 805     if (version_max > 30 || version_max < version_using || version_using < version_min)
 806         return false;
 807
 808     uint8_t ptype = tvb_get_uint8(tvb, 5);
 809     if (ptype > 15)
 810         return false;
 811
 812     return true;
 813 }
 814
 815 static bool dissect_nano_heur_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
 816 {
 817     conversation_t *conversation;
 818     struct nano_session_state *session_state;
 819
 820     if (!test_nano(pinfo, tvb, 0, data))
 821         return false;
 822
 823     conversation = find_or_create_conversation(pinfo);
 824     conversation_set_dissector(conversation, nano_tcp_handle);
 825
 826     // try to find session state
 827     session_state = (struct nano_session_state *)conversation_get_proto_data(conversation, proto_nano);
 828     if (!session_state) {
 829         // create new session state
 830         session_state = wmem_new0(wmem_file_scope(), struct nano_session_state);
 831         session_state->client_packet_type = NANO_PACKET_TYPE_INVALID;
 832         session_state->server_port = pinfo->destport;
 833         conversation_add_proto_data(conversation, proto_nano, session_state);
 834     }
 835
 836     dissect_nano_tcp(tvb, pinfo, tree, data);
 837
 838     return true;
 839 }
 840
 841 static bool dissect_nano_heur_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
 842 {
 843     conversation_t *conversation;
 844
 845     if (!test_nano(pinfo, tvb, 0, data))
 846         return false;
 847
 848     conversation = find_or_create_conversation(pinfo);
 849     conversation_set_dissector(conversation, nano_handle);
 850
 851     dissect_nano(tvb, pinfo, tree, data);
 852
 853     return true;
 854 }
 855
 856 void proto_register_nano(void)
 857 {
 858     static hf_register_info hf[] = {
 859         { &hf_nano_magic_number,
 860           { "Magic Number", "nano.magic_number",
 861             FT_STRING, BASE_NONE, NULL, 0x00,
 862             "Nano Protocol Magic Number", HFILL }
 863         },
 864         { &hf_nano_version_max,
 865           { "Maximum Version", "nano.version_max",
 866             FT_UINT8, BASE_DEC_HEX, NULL, 0x00,
 867             "Maximum Supported Protocol Version", HFILL }
 868         },
 869         { &hf_nano_version_using,
 870           { "Using Version", "nano.version_using",
 871             FT_UINT8, BASE_DEC_HEX, NULL, 0x00,
 872             "Used Protocol Version", HFILL }
 873         },
 874         { &hf_nano_version_min,
 875           { "Minimum Version", "nano.version_min",
 876             FT_UINT8, BASE_DEC_HEX, NULL, 0x00,
 877             "Minimum Supported Protocol Version", HFILL }
 878         },
 879         { &hf_nano_packet_type,
 880           { "Packet Type", "nano.packet_type",
 881             FT_UINT8, BASE_DEC_HEX, VALS(nano_packet_type_strings), 0x00,
 882             NULL, HFILL }
 883         },
 884         { &hf_nano_extensions,
 885           { "Extensions Field", "nano.extensions",
 886             FT_UINT16, BASE_HEX, NULL, 0x00,
 887             NULL, HFILL }
 888         },
 889         { &hf_nano_extensions_block_type,
 890           { "Block Type", "nano.extensions.block_type",
 891             FT_UINT16, BASE_HEX, VALS(nano_block_type_strings), 0x0f00,
 892             NULL, HFILL }
 893         },
 894         { &hf_nano_keepalive_peer_ip,
 895           { "Peer IP Address", "nano.keepalive.peer_ip",
 896             FT_IPv6, BASE_NONE, NULL, 0x00,
 897             NULL, HFILL }
 898         },
 899         { &hf_nano_keepalive_peer_port,
 900           { "Peer Port", "nano.keepalive.peer_port",
 901             FT_UINT16, BASE_DEC, NULL, 0x00,
 902             NULL, HFILL }
 903         },
 904         { &hf_nano_block_hash_previous,
 905           { "Previous Block Hash", "nano.block.hash_previous",
 906             FT_BYTES, BASE_NONE, NULL, 0x00,
 907             NULL, HFILL }
 908         },
 909         { &hf_nano_block_hash_source,
 910           { "Source Block Hash", "nano.block.hash_source",
 911             FT_BYTES, BASE_NONE, NULL, 0x00,
 912             NULL, HFILL }
 913         },
 914         { &hf_nano_block_signature,
 915           { "Signature", "nano.block.signature",
 916             FT_BYTES, BASE_NONE, NULL, 0x00,
 917             NULL, HFILL }
 918         },
 919         { &hf_nano_block_work,
 920           { "Work", "nano.block.work",
 921             FT_BYTES, BASE_NONE, NULL, 0x00,
 922             NULL, HFILL }
 923         },
 924         { &hf_nano_block_destination_account,
 925           { "Destination Account", "nano.block.destination_account",
 926             FT_BYTES, BASE_NONE, NULL, 0x00,
 927             NULL, HFILL }
 928         },
 929         { &hf_nano_block_balance,
 930           { "Balance", "nano.block.balance",
 931             FT_BYTES, BASE_NONE, NULL, 0x00,
 932             NULL, HFILL }
 933         },
 934         { &hf_nano_block_account,
 935           { "Account", "nano.block.account",
 936             FT_BYTES, BASE_NONE, NULL, 0x00,
 937             NULL, HFILL }
 938         },
 939         { &hf_nano_block_representative_account,
 940           { "Representative Account", "nano.block.representative_account",
 941             FT_BYTES, BASE_NONE, NULL, 0x00,
 942             NULL, HFILL }
 943         },
 944         { &hf_nano_block_link,
 945           { "Link", "nano.block.link",
 946             FT_BYTES, BASE_NONE, NULL, 0x00,
 947             NULL, HFILL }
 948         },
 949         { &hf_nano_vote_account,
 950           { "Account", "nano.vote.account",
 951             FT_BYTES, BASE_NONE, NULL, 0x00,
 952             NULL, HFILL }
 953         },
 954         { &hf_nano_vote_signature,
 955           { "Signature", "nano.vote.signature",
 956             FT_BYTES, BASE_NONE, NULL, 0x00,
 957             NULL, HFILL }
 958         },
 959         { &hf_nano_vote_sequence,
 960           { "Sequence", "nano.vote.sequence",
 961             FT_UINT64, BASE_DEC_HEX, NULL, 0x00,
 962             NULL, HFILL }
 963         },
 964         { &hf_nano_bulk_pull_account,
 965           { "Account", "nano.bulk_pull.account",
 966             FT_BYTES, BASE_NONE, NULL, 0x00,
 967             NULL, HFILL }
 968         },
 969         { &hf_nano_bulk_pull_block_hash_end,
 970           { "End Block Hash", "nano.bulk_pull_block.hash_end",
 971             FT_BYTES, BASE_NONE, NULL, 0x00,
 972             NULL, HFILL }
 973         },
 974         { &hf_nano_frontier_req_account,
 975           { "Account", "nano.frontier_req.account",
 976             FT_BYTES, BASE_NONE, NULL, 0x00,
 977             NULL, HFILL }
 978         },
 979         { &hf_nano_frontier_req_age,
 980           { "Age", "nano.frontier_req.age",
 981             FT_UINT32, BASE_HEX_DEC, NULL, 0x00,
 982             NULL, HFILL }
 983         },
 984         { &hf_nano_frontier_req_count,
 985           { "Count", "nano.frontier_req.count",
 986             FT_UINT32, BASE_HEX_DEC, NULL, 0x00,
 987             NULL, HFILL }
 988         },
 989         { &hf_nano_bulk_pull_blocks_min_hash,
 990           { "Min Block Hash", "nano.bulk_pull_blocks.min_hash",
 991             FT_BYTES, BASE_NONE, NULL, 0x00,
 992             NULL, HFILL }
 993         },
 994         { &hf_nano_bulk_pull_blocks_max_hash,
 995           { "Max Block Hash", "nano.bulk_pull_blocks.max_hash",
 996             FT_BYTES, BASE_NONE, NULL, 0x00,
 997             NULL, HFILL }
 998         },
 999         { &hf_nano_bulk_pull_blocks_mode,
1000           { "Mode", "nano.bulk_pull_blocks.mode",
1001             FT_UINT8, BASE_DEC_HEX, VALS(nano_bulk_pull_blocks_mode_strings), 0x00,
1002             NULL, HFILL }
1003         },
1004         { &hf_nano_bulk_pull_blocks_max_count,
1005           { "Max Count", "nano.bulk_pull_blocks.max_count",
1006             FT_UINT32, BASE_HEX_DEC, NULL, 0x00,
1007             NULL, HFILL }
1008         },
1009         { &hf_nano_bulk_push_block_type,
1010           { "Block Type", "nano.bulk_push.block_type",
1011             FT_UINT8, BASE_HEX, VALS(nano_block_type_strings), 0x00,
1012             NULL, HFILL }
1013         },
1014         { &hf_nano_bulk_pull_block_type,
1015           { "Block Type", "nano.bulk_pull.block_type",
1016             FT_UINT8, BASE_HEX, VALS(nano_block_type_strings), 0x00,
1017             NULL, HFILL }
1018         },
1019         { &hf_nano_frontier_account,
1020           { "Account", "nano.frontier.account",
1021             FT_BYTES, BASE_NONE, NULL, 0x00,
1022             NULL, HFILL }
1023         },
1024         { &hf_nano_frontier_head_hash,
1025           { "Head Hash", "nano.frontier.head_hash",
1026             FT_BYTES, BASE_NONE, NULL, 0x00,
1027             NULL, HFILL }
1028         }
1029     };
1030
1031     static int *ett[] = {
1032         &ett_nano,
1033         &ett_nano_header,
1034         &ett_nano_extensions,
1035         &ett_nano_peers,
1036         &ett_nano_peer_details[0],
1037         &ett_nano_peer_details[1],
1038         &ett_nano_peer_details[2],
1039         &ett_nano_peer_details[3],
1040         &ett_nano_peer_details[4],
1041         &ett_nano_peer_details[5],
1042         &ett_nano_peer_details[6],
1043         &ett_nano_peer_details[7],
1044         &ett_nano_block,
1045         &ett_nano_vote,
1046         &ett_nano_bulk_pull,
1047         &ett_nano_frontier_req,
1048         &ett_nano_bulk_pull_blocks,
1049         &ett_nano_frontier
1050     };
1051
1052     proto_nano = proto_register_protocol("Nano Cryptocurrency Protocol", "Nano", "nano");
1053
1054     proto_register_field_array(proto_nano, hf, array_length(hf));
1055     proto_register_subtree_array(ett, array_length(ett));
1056 }
1057
1058 void proto_reg_handoff_nano(void)
1059 {
1060     nano_handle = register_dissector("nano", dissect_nano, proto_nano);
1061     dissector_add_uint_with_preference("udp.port", NANO_UDP_PORT, nano_handle);
1062     heur_dissector_add("udp", dissect_nano_heur_udp, "Nano UDP Heuristics", "nano-udp", proto_nano, HEURISTIC_DISABLE);
1063
1064     nano_tcp_handle = register_dissector("nano-over-tcp", dissect_nano_tcp, proto_nano);
1065     dissector_add_uint_with_preference("tcp.port", NANO_TCP_PORT, nano_tcp_handle);
1066     heur_dissector_add("tcp", dissect_nano_heur_tcp, "Nano TCP Heuristics", "nano-tcp", proto_nano, HEURISTIC_DISABLE);
1067 }
1068
1069 /*
1070  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
1071  *
1072  * Local variables:
1073  * c-basic-offset: 4
1074  * tab-width: 8
1075  * indent-tabs-mode: nil
1076  * End:
1077  *
1078  * vi: set shiftwidth=4 tabstop=8 expandtab:
1079  * :indentSize=4:tabSize=8:noTabs=true:
1080  */