1 /* packet-transum.h 2 * Header file for the TRANSUM response time analyzer post-dissector 3 * By Paul Offord <paul.offord@advance7.com> 4 * Copyright 2016 Advance Seven Limited 5 * 6 * Wireshark - Network traffic analyzer 7 * By Gerald Combs <gerald@wireshark.org> 8 * Copyright 1998 Gerald Combs 9 * 10 * SPDX-License-Identifier: GPL-2.0-or-later 11 */ 12 13 #define ETH_TYPE_IPV4 0x0800 14 #define ETH_TYPE_IPV6 0x86dd 15 16 #define IP_PROTO_TCP 6 17 #define IP_PROTO_UDP 17 18 19 #define RTE_CALC_SYN 1 20 #define RTE_CALC_GTCP 2 21 #define RTE_CALC_GUDP 3 22 #define RTE_CALC_SMB1 4 23 #define RTE_CALC_SMB2 5 24 #define RTE_CALC_DCERPC 6 25 #define RTE_CALC_DNS 7 26 27 #define MAX_SUBPKTS_PER_PACKET 16 28 29 /* 30 An RR pair is identified by a Fully Qualified Message ID (RRPD) 31 */ 32 33 typedef struct _RRPD 34 { 35 /* 36 When a c2s is set TRUE it means that the associated packet is going from 37 client-to-service. If this value is false the associated packet is going 38 from service-to-client. 39 40 This value is only valid for RRPDs imbedded in subpacket structures. 41 */ 42 gboolean c2s; 43 44 guint8 ip_proto; 45 guint32 stream_no; 46 guint64 session_id; 47 guint64 msg_id; 48 49 /* 50 Some request-response pairs are demarked simple by a change in direction on a 51 TCP or UDP stream from s2c to c2s. This is true for the GTCP and GUDP 52 calculations. Other calculations (such as DCERPC) use application protocol 53 values to detect the start and end of APDUs. In this latter case decode_based 54 is set to true. 55 */ 56 gboolean decode_based; 57 58 gboolean is_retrans; 59 60 guint32 req_first_frame; 61 nstime_t req_first_rtime; 62 guint32 req_last_frame; 63 nstime_t req_last_rtime; 64 65 guint32 rsp_first_frame; 66 nstime_t rsp_first_rtime; 67 guint32 rsp_last_frame; 68 nstime_t rsp_last_rtime; 69 70 guint calculation; 71 72 /* The following numbers are for tuning purposes */ 73 guint32 req_search_total; /* The total number of steps back through the rrpd_list when matching requests to this entry */ 74 guint32 rsp_search_total; /* The total number of steps back through the rrpd_list when matching responses to this entry */ 75 } RRPD; 76 77 typedef struct _PKT_INFO 78 { 79 int frame_number; 80 nstime_t relative_time; 81 82 gboolean tcp_retran; /* tcp.analysis.retransmission */ 83 gboolean tcp_keep_alive; /* tcp.analysis.keep_alive */ 84 gboolean tcp_flags_syn; /* tcp.flags.syn */ 85 gboolean tcp_flags_ack; /* tcp.flags.ack */ 86 gboolean tcp_flags_reset; /* tcp.flags.reset */ 87 guint32 tcp_flags_urg; /* tcp.urgent_pointer */ 88 guint32 tcp_seq; /* tcp.seq */ 89 90 /* Generic transport values */ 91 guint16 srcport; /* tcp.srcport or udp.srcport*/ 92 guint16 dstport; /* tcp.dstport or udp.dstport*/ 93 guint16 len; /* tcp.len or udp.len */ 94 95 guint8 ssl_content_type; /*tls.record.content_type */ 96 97 guint8 tds_type; /*tds.type */ 98 guint16 tds_length; /* tds.length */ 99 100 guint16 smb_mid; /* smb.mid */ 101 102 guint64 smb2_sesid; /* smb2.sesid */ 103 guint64 smb2_msg_id; /* smb2.msg_id */ 104 guint16 smb2_cmd; /* smb2.cmd */ 105 106 guint8 dcerpc_ver; /* dcerpc.ver */ 107 guint8 dcerpc_pkt_type; /* dcerpc.pkt_type */ 108 guint32 dcerpc_cn_call_id; /* dcerpc.cn_call_id */ 109 guint16 dcerpc_cn_ctx_id; /* dcerpc.cn_ctx_id */ 110 111 guint16 dns_id; /* dns.id */ 112 113 /* The following values are calculated */ 114 gboolean pkt_of_interest; 115 116 /* RRPD data for this packet */ 117 /* Complete this based on the detected protocol */ 118 RRPD rrpd; 119 120 } PKT_INFO; 121 122 typedef enum { 123 HF_INTEREST_IP_PROTO = 0, 124 HF_INTEREST_IPV6_NXT, 125 126 HF_INTEREST_TCP_RETRAN, 127 HF_INTEREST_TCP_KEEP_ALIVE, 128 HF_INTEREST_TCP_FLAGS_SYN, 129 HF_INTEREST_TCP_FLAGS_ACK, 130 HF_INTEREST_TCP_FLAGS_RESET, 131 HF_INTEREST_TCP_FLAGS_URG, 132 HF_INTEREST_TCP_SEQ, 133 HF_INTEREST_TCP_SRCPORT, 134 HF_INTEREST_TCP_DSTPORT, 135 HF_INTEREST_TCP_STREAM, 136 HF_INTEREST_TCP_LEN, 137 138 HF_INTEREST_UDP_SRCPORT, 139 HF_INTEREST_UDP_DSTPORT, 140 HF_INTEREST_UDP_STREAM, 141 HF_INTEREST_UDP_LENGTH, 142 143 HF_INTEREST_SSL_CONTENT_TYPE, 144 145 HF_INTEREST_TDS_TYPE, 146 HF_INTEREST_TDS_LENGTH, 147 148 HF_INTEREST_SMB_MID, 149 150 HF_INTEREST_SMB2_SES_ID, 151 HF_INTEREST_SMB2_MSG_ID, 152 HF_INTEREST_SMB2_CMD, 153 154 HF_INTEREST_DCERPC_VER, 155 HF_INTEREST_DCERPC_PKT_TYPE, 156 HF_INTEREST_DCERPC_CN_CALL_ID, 157 HF_INTEREST_DCERPC_CN_CTX_ID, 158 159 HF_INTEREST_DNS_ID, 160 161 HF_INTEREST_END_OF_LIST 162 } ehf_of_interest; 163 164 typedef struct _HF_OF_INTEREST_INFO 165 { 166 int hf; 167 const char* proto_name; 168 169 } HF_OF_INTEREST_INFO; 170 171 extern HF_OF_INTEREST_INFO hf_of_interest[HF_INTEREST_END_OF_LIST]; 172 173 void add_detected_tcp_svc(guint16 port); 174 extern gboolean is_dcerpc_context_zero(guint32 pkt_type); 175 extern gboolean is_dcerpc_req_pkt_type(guint32 pkt_type); 176 177 178 /* 179 * Editor modelines - https://www.wireshark.org/tools/modelines.html 180 * 181 * Local variables: 182 * c-basic-offset: 4 183 * tab-width: 8 184 * indent-tabs-mode: nil 185 * End: 186 * 187 * vi: set shiftwidth=4 tabstop=8 expandtab: 188 * :indentSize=4:tabSize=8:noTabs=true: 189 */ 190