/* * R09.x public transport priority telegrams * * Anlagen zu VOEV 04.05 "LSA/R09.14 and R09.16" * https://www.vdv.de/voev-04-05-1-erg.pdfx * * Copyright 2020, Tomas Kukosa * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "config.h" #include void proto_register_r09(void); void proto_reg_handoff_r09(void); #define PNAME "R09.x" #define PSNAME "R09" #define PFNAME "r09" static int proto_r09 = -1; static int hf_r09_modus = -1; static int hf_r09_ty = -1; static int hf_r09_tl = -1; static int hf_r09_zv = -1; static int hf_r09_zw = -1; static int hf_r09_mp8 = -1; static int hf_r09_mp16 = -1; static int hf_r09_pr = -1; static int hf_r09_ha = -1; static int hf_r09_ln = -1; static int hf_r09_kn = -1; static int hf_r09_zn = -1; static int hf_r09_zl = -1; static int hf_r09_fn = -1; static int hf_r09_un = -1; static gint ett_r09 = -1; static dissector_handle_t r09_handle; static const value_string r09_zv_vals[] = { { 0x00, "Verspätung" }, { 0x01, "Verfrühung/Vorsprung" }, {0, NULL} }; static const value_string r09_ha_vals[] = { { 0x00, "Ohne Bedeutung" }, { 0x01, "Taste 'gerade' betätig" }, { 0x02, "Taste 'links' betätig" }, { 0x03, "Taste 'rechts' betätig" }, {0, NULL} }; static dgt_set_t Dgt1_9_bcd = { { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ '0','1','2','3','4','5','6','7','8','9','?','?','?','?','?','?' } }; static int dissect_r09(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { proto_item *ti= NULL; proto_tree *r09_tree = NULL; guint8 ib1, ib2; guint8 ty, tl; guint16 mp; const gchar *r09x_str, *ln_str, *kn_str, *zn_str, *fn_str, *un_str; ib1 = tvb_get_guint8(tvb, 0); ty = ib1 & 0x0F; if (ib1 != 0x91) { return 0; } ib2 = tvb_get_guint8(tvb, 1); tl = ib2 & 0x0F; r09x_str = wmem_strdup_printf(pinfo->pool, "R09.%u%u", ty, tl); col_append_fstr(pinfo->cinfo, COL_INFO, " %s", r09x_str); ti = proto_tree_add_protocol_format(tree, proto_r09, tvb, 0, -1, "%s", r09x_str); r09_tree = proto_item_add_subtree(ti, ett_r09); /* Infobyte 1 */ proto_tree_add_item(r09_tree, hf_r09_modus, tvb, 0, 1, ENC_BIG_ENDIAN); proto_tree_add_item(r09_tree, hf_r09_ty, tvb, 0, 1, ENC_BIG_ENDIAN); /* Infobyte 2 */ proto_tree_add_item(r09_tree, hf_r09_zv, tvb, 1, 1, ENC_BIG_ENDIAN); proto_tree_add_item(r09_tree, hf_r09_zw, tvb, 1, 1, ENC_BIG_ENDIAN); proto_tree_add_item(r09_tree, hf_r09_tl, tvb, 1, 1, ENC_BIG_ENDIAN); if (tl == 0) { /* Infobyte 3 */ proto_tree_add_item(r09_tree, hf_r09_mp8, tvb, 2, 1, ENC_BIG_ENDIAN); mp = tvb_get_guint8(tvb, 2); } else { /* Infobyte 3, Zusatzbyte 1 */ proto_tree_add_item(r09_tree, hf_r09_mp16, tvb, 2, 2, ENC_BIG_ENDIAN); mp = tvb_get_guint16(tvb, 2, ENC_BIG_ENDIAN); } col_append_fstr(pinfo->cinfo, COL_INFO, " MP=%u", mp); if (tl >= 2) { /* Zusatzbyte 2 */ proto_tree_add_item(r09_tree, hf_r09_pr, tvb, 4, 1, ENC_BIG_ENDIAN); proto_tree_add_item(r09_tree, hf_r09_ha, tvb, 4, 1, ENC_BIG_ENDIAN); } if (tl >= 3) { /* Zusatzbyte 2, 3 */ ln_str = tvb_get_bcd_string(pinfo->pool, tvb, 4, 2, &Dgt1_9_bcd, TRUE, FALSE, TRUE); proto_tree_add_string(r09_tree, hf_r09_ln, tvb, 4, 2, ln_str); } if (tl >= 4) { /* Zusatzbyte 4 */ kn_str = tvb_get_bcd_string(pinfo->pool, tvb, 6, 1, &Dgt1_9_bcd, FALSE, FALSE, TRUE); proto_tree_add_string(r09_tree, hf_r09_kn, tvb, 6, 1, kn_str); } if (tl >= 6) { /* Zusatzbyte 5, 6 */ zn_str = tvb_get_bcd_string(pinfo->pool, tvb, 7, 2, &Dgt1_9_bcd, FALSE, TRUE, TRUE); proto_tree_add_string(r09_tree, hf_r09_zn, tvb, 7, 2, zn_str); } if (tl == 6) { /* Zusatzbyte 6 */ proto_tree_add_item(r09_tree, hf_r09_zl, tvb, 8, 1, ENC_BIG_ENDIAN); } if (tl == 8) { /* Zusatzbyte 6, 7, 8 */ fn_str = tvb_get_bcd_string(pinfo->pool, tvb, 8, 2, &Dgt1_9_bcd, TRUE, FALSE, TRUE); proto_tree_add_string(r09_tree, hf_r09_fn, tvb, 8, 2, fn_str); un_str = tvb_get_bcd_string(pinfo->pool, tvb, 10, 1, &Dgt1_9_bcd, FALSE, FALSE, TRUE); proto_tree_add_string(r09_tree, hf_r09_un, tvb, 10, 1, un_str); } return tvb_captured_length(tvb); } void proto_register_r09(void) { static hf_register_info hf[] = { { &hf_r09_modus, { "Modus", "r09.modus", FT_UINT8, BASE_DEC, NULL, 0xF0, NULL, HFILL} }, { &hf_r09_ty, { "TY", "r09.ty", FT_UINT8, BASE_DEC, NULL, 0x0F, "Typ", HFILL} }, { &hf_r09_zv, { "ZV", "r09.zv", FT_UINT8, BASE_DEC, VALS(r09_zv_vals), 0x80, "Vorzeichen einer Fahrplanabweichung", HFILL} }, { &hf_r09_zw, { "ZW", "r09.zw", FT_UINT8, BASE_DEC, NULL, 0x70, "Betrag einer Fahrplanabweichung", HFILL} }, { &hf_r09_tl, { "TL", "r09.tl", FT_UINT8, BASE_DEC, NULL, 0x0F, "Anzahl der Zusatzbytes", HFILL} }, { &hf_r09_mp8, { "MP", "r09.mp", FT_UINT8, BASE_DEC_HEX, NULL, 0x00, "Meldepunktnummer", HFILL} }, { &hf_r09_mp16, { "MP", "r09.mp", FT_UINT16, BASE_DEC_HEX, NULL, 0x00, "Meldepunktnummer", HFILL} }, { &hf_r09_pr, { "PR", "r09.pr", FT_UINT8, BASE_DEC, NULL, 0xC0, "Priorität", HFILL} }, { &hf_r09_ha, { "HA", "r09.ha", FT_UINT8, BASE_DEC, VALS(r09_ha_vals), 0x30, "Anforderung manuell ausgelöst", HFILL} }, { &hf_r09_ln, { "LN", "r09.ln", FT_STRING, BASE_NONE, NULL, 0x00, "Liniennummer", HFILL} }, { &hf_r09_kn, { "KN", "r09.kn", FT_STRING, BASE_NONE, NULL, 0x00, "Kuzrsnummer", HFILL} }, { &hf_r09_zn, { "ZN", "r09.zn", FT_STRING, BASE_NONE, NULL, 0x00, "Zielnummer", HFILL} }, { &hf_r09_zl, { "ZL", "r09.zl", FT_UINT8, BASE_DEC, NULL, 0x07, "Zuglänge", HFILL} }, { &hf_r09_fn, { "FN", "r09.fn", FT_STRING, BASE_NONE, NULL, 0x00, "Fahrzeugnummer", HFILL} }, { &hf_r09_un, { "UN", "r09.un", FT_STRING, BASE_NONE, NULL, 0x00, "Unternehmer", HFILL} }, }; static gint* ett[] = { &ett_r09, }; proto_r09 = proto_register_protocol(PNAME, PSNAME, PFNAME); proto_register_subtree_array(ett, array_length(ett)); proto_register_field_array(proto_r09, hf,array_length(hf)); r09_handle = register_dissector(PFNAME, dissect_r09, proto_r09); } void proto_reg_handoff_r09(void) { if (find_dissector_table("cam.ptat")) { dissector_add_uint("cam.ptat", 1, r09_handle); } }