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-rw-r--r--epan/dissectors/packet-ipvs-syncd.c486
1 files changed, 486 insertions, 0 deletions
diff --git a/epan/dissectors/packet-ipvs-syncd.c b/epan/dissectors/packet-ipvs-syncd.c
new file mode 100644
index 00000000..aa24f01e
--- /dev/null
+++ b/epan/dissectors/packet-ipvs-syncd.c
@@ -0,0 +1,486 @@
+/* packet-ipvs-syncd.c 2001 Ronnie Sahlberg <See AUTHORS for email>
+ * Routines for IGMP packet disassembly
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+void proto_register_ipvs_syncd(void);
+void proto_reg_handoff_ipvs_syncd(void);
+
+static dissector_handle_t ipvs_syncd_handle;
+
+static int proto_ipvs_syncd = -1;
+static int hf_conn_count = -1;
+static int hf_syncid = -1;
+static int hf_size = -1;
+static int hf_resv = -1;
+static int hf_version = -1;
+static int hf_proto = -1;
+static int hf_cport = -1;
+static int hf_vport = -1;
+static int hf_dport = -1;
+static int hf_caddr = -1;
+static int hf_vaddr = -1;
+static int hf_daddr = -1;
+static int hf_flags = -1;
+static int hf_flags_conn_type = -1;
+static int hf_flags_hashed_entry = -1;
+static int hf_flags_no_output_packets = -1;
+static int hf_flags_conn_not_established = -1;
+static int hf_flags_adjust_output_seq = -1;
+static int hf_flags_adjust_input_seq = -1;
+static int hf_flags_no_client_port_set = -1;
+static int hf_state = -1;
+static int hf_in_seq_init = -1;
+static int hf_in_seq_delta = -1;
+static int hf_in_seq_pdelta = -1;
+static int hf_out_seq_init = -1;
+static int hf_out_seq_delta = -1;
+static int hf_out_seq_pdelta = -1;
+
+/* Payload v1 */
+static int hf_type = -1;
+static int hf_ver = -1;
+static int hf_size_v1 = -1;
+static int hf_flags_v1 = -1;
+static int hf_fwmark = -1;
+static int hf_timeout = -1;
+static int hf_caddr6 = -1;
+static int hf_vaddr6 = -1;
+static int hf_daddr6 = -1;
+
+static int ett_ipvs_syncd = -1;
+static int ett_conn = -1;
+static int ett_flags = -1;
+
+#define IPVS_SYNCD_MC_GROUP "224.0.0.18"
+#define IPVS_SYNCD_PORT 8848 /* Not IANA registered */
+
+static const value_string proto_strings[] = {
+ {0x06, "TCP"},
+ {0x11, "UDP"},
+ {0x00, NULL},
+};
+
+static const value_string state_strings[] = {
+ {0x00, "Input"},
+ {0x04, "Output"},
+ {0x08, "Input Only"},
+ {0x00, NULL},
+};
+
+static const value_string type_strings[] = {
+ {0x0, "IPv4"},
+ {0x2, "IPv6"},
+ {0x00, NULL},
+};
+
+/*
+ * IPVS Connection Flags
+ * Pulled from include/net/ip_vs.h in linux kernel source
+ */
+#define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */
+#define IP_VS_CONN_F_MASQ 0x0000 /* masquerading */
+#define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */
+#define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */
+#define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */
+#define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */
+#define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */
+#define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */
+#define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */
+#define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */
+#define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */
+#define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */
+#define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */
+
+static const value_string connection_type_strings[] = {
+ {IP_VS_CONN_F_MASQ, "Masquerade"},
+ {IP_VS_CONN_F_LOCALNODE, "Local Node"},
+ {IP_VS_CONN_F_TUNNEL, "Tunnel"},
+ {IP_VS_CONN_F_DROUTE, "Direct Routing"},
+ {0x00, NULL},
+};
+
+
+static int
+dissect_ipvs_syncd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
+{
+ proto_tree *tree;
+ proto_item *item;
+ int offset = 0;
+ guint8 cnt = 0;
+ guint8 version = 0;
+ int conn = 0;
+
+ item = proto_tree_add_item(parent_tree, proto_ipvs_syncd, tvb, offset, -1, ENC_NA);
+ tree = proto_item_add_subtree(item, ett_ipvs_syncd);
+
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPVS");
+ col_clear(pinfo->cinfo, COL_INFO);
+
+ cnt = tvb_get_guint8(tvb, offset);
+ if(cnt == 0) { //Version 1 (or after...) first byte is reserved
+ proto_tree_add_item(tree, hf_resv, tvb, offset, 1, ENC_NA);
+ col_set_str(pinfo->cinfo, COL_INFO, "v1");
+ } else {
+ proto_tree_add_item(tree, hf_conn_count, tvb, offset, 1, ENC_BIG_ENDIAN);
+ col_set_str(pinfo->cinfo, COL_INFO, "v0");
+ }
+ offset += 1;
+
+ proto_tree_add_item(tree, hf_syncid, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset += 1;
+
+ proto_tree_add_item(tree, hf_size, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ if(cnt == 0) { //Version 1 (or after...)
+ cnt = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(tree, hf_conn_count, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset += 1;
+
+ version = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(tree, hf_version, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset += 1;
+
+ proto_tree_add_item(tree, hf_resv, tvb, offset, 2, ENC_NA);
+ offset += 2;
+ }
+ col_append_fstr(pinfo->cinfo, COL_INFO, " %u Connection(s)", cnt);
+
+ for (conn = 0; conn < cnt; conn++)
+ {
+ if(version) {
+
+ proto_tree *ctree;
+ guint8 type;
+ guint16 size;
+
+ ctree = proto_tree_add_subtree_format(tree, tvb, offset, 36, ett_conn, NULL,
+ "Connection #%d", conn+1);
+
+ type = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(ctree, hf_type, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset += 1;
+
+ proto_tree_add_item(ctree, hf_proto, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset += 1;
+
+ size = (tvb_get_ntohs(tvb, offset) & 0x1FFF);
+ proto_item_set_len(ctree, size);
+ proto_tree_add_item(ctree, hf_ver, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ctree, hf_size_v1, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_flags_v1, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_state, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_cport, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_vport, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_dport, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_fwmark, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_timeout, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ if(type == 0){ /* IPv4 */
+
+ proto_tree_add_item(ctree, hf_caddr, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_vaddr, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_daddr, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+ } else { /* IPv6 */
+
+ proto_tree_add_item(ctree, hf_caddr6, tvb, offset, 16, ENC_NA);
+ offset += 16;
+
+ proto_tree_add_item(ctree, hf_vaddr6, tvb, offset, 16, ENC_NA);
+ offset += 16;
+
+ proto_tree_add_item(ctree, hf_daddr6, tvb, offset, 16, ENC_NA);
+ offset += 16;
+ }
+
+ } else {
+
+ proto_tree *ctree;
+ proto_tree *ftree, *fi;
+ guint16 flags;
+
+ ctree = proto_tree_add_subtree_format(tree, tvb, offset, 24, ett_conn, NULL,
+ "Connection #%d", conn+1);
+
+ proto_tree_add_item(ctree, hf_resv, tvb, offset, 1, ENC_NA);
+ offset += 1;
+
+ proto_tree_add_item(ctree, hf_proto, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset += 1;
+
+ proto_tree_add_item(ctree, hf_cport, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_vport, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_dport, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_caddr, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_vaddr, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_daddr, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ flags = tvb_get_ntohs(tvb, offset);
+ fi = proto_tree_add_item(ctree, hf_flags, tvb, offset, 2, ENC_BIG_ENDIAN);
+ ftree = proto_item_add_subtree(fi, ett_flags);
+ proto_tree_add_item(ftree, hf_flags_conn_type, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ftree, hf_flags_hashed_entry, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ftree, hf_flags_no_output_packets, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ftree, hf_flags_conn_not_established, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ftree, hf_flags_adjust_output_seq, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ftree, hf_flags_adjust_input_seq, tvb, offset, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ftree, hf_flags_no_client_port_set, tvb, offset, 2, ENC_BIG_ENDIAN);
+
+ offset += 2;
+
+ proto_tree_add_item(ctree, hf_state, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ /* we have full connection info */
+ if ( flags & IP_VS_CONN_F_SEQ_MASK )
+ {
+ proto_tree_add_item(ctree, hf_in_seq_init, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_in_seq_delta, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_in_seq_pdelta, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_out_seq_init, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_out_seq_delta, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ctree, hf_out_seq_pdelta, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ }
+ }
+
+ }
+
+ return tvb_captured_length(tvb);
+}
+
+void
+proto_register_ipvs_syncd(void)
+{
+ static hf_register_info hf[] = {
+ { &hf_conn_count,
+ { "Connection Count", "ipvs.conncount", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_syncid,
+ { "Synchronization ID", "ipvs.syncid", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_size,
+ { "Size", "ipvs.size", FT_UINT16, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_resv,
+ { "Reserved", "ipvs.resv", FT_BYTES, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_version,
+ { "Version", "ipvs.version", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_proto,
+ { "Protocol", "ipvs.proto", FT_UINT8, BASE_HEX,
+ VALS(proto_strings), 0, NULL, HFILL }},
+
+ { &hf_cport,
+ { "Client Port", "ipvs.cport", FT_UINT16, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_vport,
+ { "Virtual Port", "ipvs.vport", FT_UINT16, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_dport,
+ { "Destination Port", "ipvs.dport", FT_UINT16, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_caddr,
+ { "Client Address", "ipvs.caddr", FT_IPv4, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_vaddr,
+ { "Virtual Address", "ipvs.vaddr", FT_IPv4, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_daddr,
+ { "Destination Address", "ipvs.daddr", FT_IPv4, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_flags,
+ { "Flags", "ipvs.flags", FT_UINT16, BASE_HEX,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_flags_conn_type,
+ { "Connection Type", "ipvs.flags.conn_type", FT_UINT16, BASE_HEX,
+ VALS(connection_type_strings), 0x0F, NULL, HFILL }},
+
+ { &hf_flags_hashed_entry,
+ { "Hashed Entry", "ipvs.flags.hashed_entry", FT_BOOLEAN, 16,
+ NULL, IP_VS_CONN_F_HASHED, NULL, HFILL }},
+
+ { &hf_flags_no_output_packets,
+ { "No Output Packets", "ipvs.flags.no_output_packets", FT_BOOLEAN, 16,
+ NULL, IP_VS_CONN_F_NOOUTPUT, NULL, HFILL }},
+
+ { &hf_flags_conn_not_established,
+ { "Connection Not Established", "ipvs.flags.conn_not_established", FT_BOOLEAN, 16,
+ NULL, IP_VS_CONN_F_INACTIVE, NULL, HFILL }},
+
+ { &hf_flags_adjust_output_seq,
+ { "Adjust Output Sequence", "ipvs.flags.adjust_output_seq", FT_BOOLEAN, 16,
+ NULL, IP_VS_CONN_F_OUT_SEQ, NULL, HFILL }},
+
+ { &hf_flags_adjust_input_seq,
+ { "Adjust Input Sequence", "ipvs.flags.adjust_input_seq", FT_BOOLEAN, 16,
+ NULL, IP_VS_CONN_F_IN_SEQ, NULL, HFILL }},
+
+ { &hf_flags_no_client_port_set,
+ { "No Client Port Set", "ipvs.flags.no_client_port_set", FT_BOOLEAN, 16,
+ NULL, IP_VS_CONN_F_NO_CPORT, NULL, HFILL }},
+
+ { &hf_state,
+ { "State", "ipvs.state", FT_UINT16, BASE_HEX,
+ VALS(state_strings), 0, NULL, HFILL }},
+
+ { &hf_in_seq_init,
+ { "Input Sequence (Initial)", "ipvs.in_seq.initial", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL }},
+
+ { &hf_in_seq_delta,
+ { "Input Sequence (Delta)", "ipvs.in_seq.delta", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL }},
+
+ { &hf_in_seq_pdelta,
+ { "Input Sequence (Previous Delta)", "ipvs.in_seq.pdelta", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL }},
+
+ { &hf_out_seq_init,
+ { "Output Sequence (Initial)", "ipvs.out_seq.initial", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL }},
+
+ { &hf_out_seq_delta,
+ { "Output Sequence (Delta)", "ipvs.out_seq.delta", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL }},
+
+ { &hf_out_seq_pdelta,
+ { "Output Sequence (Previous Delta)", "ipvs.out_seq.pdelta", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL }},
+
+ /* v1 payload */
+
+ { &hf_type,
+ { "Type", "ipvs.type", FT_UINT8, BASE_DEC,
+ VALS(type_strings), 0, NULL, HFILL }},
+
+ { &hf_ver,
+ { "Version", "ipvs.ver", FT_UINT16, BASE_DEC,
+ NULL, 0xE000, NULL, HFILL }},
+
+ { &hf_size_v1,
+ { "Size", "ipvs.size.v1", FT_UINT16, BASE_DEC,
+ NULL, 0x1FFF, NULL, HFILL }},
+
+ { &hf_flags_v1,
+ { "Flags", "ipvs.flags.v1", FT_UINT32, BASE_HEX,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_fwmark,
+ { "FWmark", "ipvs.fwmark", FT_UINT32, BASE_HEX,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_timeout,
+ { "Timeout", "ipvs.timeout", FT_UINT32, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_caddr6,
+ { "Client Address", "ipvs.caddr6", FT_IPv6, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_vaddr6,
+ { "Virtual Address", "ipvs.vaddr6", FT_IPv6, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_daddr6,
+ { "Destination Address", "ipvs.daddr6", FT_IPv6, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ };
+ static gint *ett[] = {
+ &ett_ipvs_syncd,
+ &ett_conn,
+ &ett_flags,
+ };
+
+ proto_ipvs_syncd = proto_register_protocol("IP Virtual Services Sync Daemon", "IPVS", "ipvs");
+ proto_register_field_array(proto_ipvs_syncd, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+ ipvs_syncd_handle = register_dissector("ipvs", dissect_ipvs_syncd, proto_ipvs_syncd);
+}
+
+void
+proto_reg_handoff_ipvs_syncd(void)
+{
+ dissector_add_uint_with_preference("udp.port", IPVS_SYNCD_PORT, ipvs_syncd_handle);
+}
+
+/*
+ * Editor modelines - https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */
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