Have a separate dissector for pcap/pcapng-format packet data.

Put that dissector into its own file, and get handles for it from the
pcap and pcapng file dissectors.  Put the value_string of pcap/pcapng
LINKTYPE_ values there, and have the pcap and pcapng file dissectors
import it.

Expand that table to include all LINKTYPE_ values in the current
libpcap.

Change-Id: I9397035efa5711e8a18a26e056d3b54494fd3148
Reviewed-on: https://code.wireshark.org/review/12000
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 372 insertions, 0 deletions

diff --git a/epan/dissectors/packet-pcap_pktdata.c b/epan/dissectors/packet-pcap_pktdata.c
new file mode 100644
index 0000000000..8e10e291e8
--- /dev/null
+++ b/epan/dissectors/packet-pcap_pktdata.c
@@ -0,0 +1,372 @@
+/* packet-pcap_pktdata.c
+ * Dissect packet data from a pcap or pcapng file or from a "remote pcap"
+ * protocol.
+ *
+ * Copyright 2015, Michal Labedzki for Tieto Corporation
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+#include <wiretap/wtap.h>
+#include <wiretap/pcap-encap.h>
+
+#include <epan/dissectors/packet-pcap_pktdata.h>
+
+static int proto_pcap_pktdata = -1;
+
+static int hf_pcap_pktdata_pseudoheader = -1;
+static int hf_pcap_pktdata_pseudoheader_bluetooth_direction = -1;
+static int hf_pcap_pktdata_data = -1;
+
+static gint ett_pcap_pktdata_pseudoheader = -1;
+static gint ett_pcap_pktdata_data = -1;
+
+static dissector_table_t wtap_encap_table;
+
+/*
+ * Link-layer header type values.
+ *
+ * Includes both the official documented values from
+ *
+ *    http://www.tcpdump.org/linktypes.html
+ *
+ * and values not listed there.  The names are, in most cases, the
+ * LINKTYPE_ names with LINKTYPE_ stripped off.
+ */
+const value_string link_type_vals[] = {
+    { 0,    "NULL" },
+    { 1,    "ETHERNET" },
+    { 2,    "EXP_ETHERNET" },            /* 3Mb experimental Ethernet */
+    { 3,    "AX25" },
+    { 4,    "PRONET" },                 /* Proteon PRONET */
+    { 5,    "CHAOS" },                  /* MIT Chaosnet */
+    { 6,    "IEEE802_5" },
+    { 7,    "ARCNET_BSD" },
+    { 8,    "SLIP" },
+    { 9,    "PPP" },
+    { 10,   "FDDI" },
+    { 32,   "REDBACK" },                /* Redback SmartEdge 400/800 */
+    { 50,   "PPP_HDLC" },
+    { 51,   "PPP_ETHER" },
+    { 99,   "SYMANTEC_FIREWALL" },
+    { 100,  "ATM_RFC1483" },
+    { 101,  "RAW" },
+    { 102,  "BSD/OS SLIP" },
+    { 103,  "BSD/OS PPP" },
+    { 104,  "C_HDLC" },
+    { 105,  "IEEE802_11" },
+    { 106,  "LINUX_ATM_CLIP" },
+    { 107,  "FRELAY" },
+    { 108,  "LOOP" },
+    { 109,  "ENC" },
+    { 110,  "LANE8023" },               /* ATM LANE + 802.3 */
+    { 111,  "HIPPI" },                  /* NetBSD HIPPI */
+    { 112,  "HDLC" },                   /* NetBSD HDLC framing */
+    { 113,  "LINUX_SLL" },
+    { 114,  "LTALK" },
+    { 115,  "ECONET" },                 /* Acorn Econet */
+    { 116,  "IPFILTER" },               /* Reserved for use with OpenBSD ipfilter */
+    { 117,  "PFLOG" },
+    { 118,  "CISCO_IOS" },              /* for Cisco-internal use */
+    { 119,  "IEEE802_11_PRISM" },
+    { 120,  "IEEE802_11_AIRONET" },     /* 802.11 plus FreeBSD Aironet drive metadata header */
+    { 121,  "HHDLC" },                  /* reserved for Siemens HiPath HDLC - never used */
+    { 122,  "IP_OVER_FC" },
+    { 123,  "SUNATM" },
+    { 124,  "RIO" },                    /* Private use for RapidIO */
+    { 125,  "PCI_EXP" },                /* Private use for PCI Express */
+    { 126,  "AURORA" },                 /* Xilinx Aurora link layer */
+    { 127,  "IEEE802_11_RADIOTAP" },
+    { 128,  "TZSP" },                   /* reserved for TZSP encapsulation - never used */
+    { 129,  "ARCNET_LINUX" },
+    { 130,  "JUNIPER_MLPPP" },          /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 131,  "JUNIPER_MLFR" },           /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 132,  "JUNIPER_ES" },             /* Juniper-private, but handled by tcpdump */
+    { 133,  "JUNIPER_GGSN" },           /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 134,  "JUNIPER_MFR" },            /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 135,  "JUNIPER_ATM2" },           /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 136,  "JUNIPER_SVCS" },           /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 137,  "JUNIPER_ATM1" },           /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 138,  "APPLE_IP_OVER_IEEE1394" },
+    { 139,  "MTP2_WITH_PHDR" },
+    { 140,  "MTP2" },
+    { 141,  "MTP3" },
+    { 142,  "SCCP" },
+    { 143,  "DOCSIS" },
+    { 144,  "LINUX_IRDA" },
+    { 145,  "IBM_SP" },                 /* Reserved for IBM SP switch */
+    { 146,  "IBM_SN" },                 /* Reserved for IBM Next Federation switch */
+    { 147,  "USER_0" },
+    { 148,  "USER_1" },
+    { 149,  "USER_2" },
+    { 150,  "USER_3" },
+    { 151,  "USER_4" },
+    { 152,  "USER_5" },
+    { 153,  "USER_6" },
+    { 154,  "USER_7" },
+    { 155,  "USER_8" },
+    { 156,  "USER_9" },
+    { 157,  "USER_10" },
+    { 158,  "USER_11" },
+    { 159,  "USER_12" },
+    { 160,  "USER_13" },
+    { 161,  "USER_14" },
+    { 162,  "USER_15" },
+    { 163,  "IEEE802_11_AVS" },
+    { 164,  "JUNIPER_MONITOR" },        /* Juniper-private, but handled by tcpdump */
+    { 165,  "BACNET_MS_TP" },
+    { 166,  "PPP_PPPD" },
+    { 167,  "JUNIPER_PPPOE" },          /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 168,  "JUNIPER_PPPOE_ATM" },      /* Juniper-private, but handled by tcpdump */
+    { 169,  "GPRS_LLC" },
+    { 170,  "GPF_T" },                  /* GPF-T (ITU-T G.7041/Y.1303) */
+    { 171,  "GPF_F" },                  /* GPF-F (ITU-T G.7041/Y.1303) */
+    { 172,  "GCOM_TIE1" },              /* Reserved for Gcom's T1/E1 line monitoring equipment */
+    { 173,  "GCOM_SERIAL" },            /* Reserved for Gcom's T1/E1 line monitoring equipment */
+    { 174,  "JUNIPER_PIC_PEER" },       /* Juniper-private */
+    { 175,  "ERF_ETH" },                /* ERF header followed by Ethernet */
+    { 176,  "ERF_POS" },                /* ERF header followed by Packet-over-SONET */
+    { 177,  "LINUX_LAPD" },
+    { 178,  "JUNIPER_ETHER" },          /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 179,  "JUNIPER_PPP" },            /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 180,  "JUNIPER_FRELAY" },         /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 181,  "JUNIPER_CHDLC" },          /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 182,  "MFR" },                    /* Multi Link Frame Relay (FRF.16) */
+    { 183,  "JUNIPER_VP" },             /* Juniper-private, but handled by tcpdump and Wireshark */
+    { 184,  "A429" },                   /* Arinc 429 frames */
+    { 185,  "A653_ICM" },               /* Aricn 653 Interpartition Communication messages */
+    { 186,  "USB" },                    /* Older USB header */
+    { 187,  "BLUETOOTH_HCI_H4" },
+    { 188,  "IEEE802_16_MAC_CPS" },     /* IEEE 802.16 MAC Common Part Sublayer */
+    { 189,  "USB_LINUX" },
+    { 190,  "CAN20B" },                 /* CAN v2.0B packets */
+    { 191,  "IEEE802_15_4_LINUX" },     /* IEEE 802.15.4, with address fields padded, as is done by Linux drivers */
+    { 192,  "PPI" },
+    { 193,  "IEEE802_16_MAC_CPS_RADIO" }, /* 802.16 MAC Common Part Sublayer plus a radiotap radio header */
+    { 194,  "JUNIPER_ISM" },            /* Juniper-private */
+    { 195,  "IEEE802_15_4" },
+    { 196,  "SITA" },
+    { 197,  "ERF" },
+    { 198,  "RAIF1" },                  /* Special header prepended to Ethernet packets when capturing from a u10 Networks board */
+    { 199,  "IPMB" },                   /* IPMB packet for IPMI */
+    { 200,  "JUNIPER_ST" },             /* Juniper-private */
+    { 201,  "BLUETOOTH_HCI_H4_WITH_PHDR" },
+    { 202,  "AX25_KISS" },
+    { 203,  "LAPD" },
+    { 204,  "PPP_WITH_DIR" },
+    { 205,  "C_HDLC_WITH_DIR" },
+    { 206,  "FRELAY_WITH_DIR" },
+    { 207,  "LAPB_WITH_DIR" },          /* LAPB with direction pseudo-header */
+    { 209,  "IPMB_LINUX" },
+    { 210,  "FLEXRAY" },                /* FlexRay automotive bus */
+    { 211,  "MOST" },                   /* Media Oriented Systems Transport */
+    { 212,  "LIN" },                    /* Local Interconnect Network */
+    { 213,  "X2E_SERIAL" },             /* X2E-private for serial line capture */
+    { 214,  "X2E_XORAYA" },             /* X2E-private for Xoraya data logger family */
+    { 215,  "IEEE802_15_4_NONASK_PHY" },
+    { 216,  "LINUX_EVDEV" },            /* Linux evdev messages */
+    { 217,  "GSMTAP_UM" },              /* "gsmtap" header followed by GSM Um interface packets */
+    { 218,  "GSMTAP_UM" },              /* "gsmtap" header followed by GSM Abis interface packets */
+    { 219,  "MPLS" },                   /* MPLS label (stack?) as the link-layer header */
+    { 220,  "USB_LINUX_MMAPPED" },
+    { 221,  "DECT" },                   /* DECT packets, with a pseudo-header */
+    { 222,  "AOS" },                    /* AOS Space Data Link Protocol */
+    { 223,  "WIHART" },                 /* Wireless HART */
+    { 224,  "FC_2" },
+    { 225,  "FC_2_WITH_FRAME_DELIMS" },
+    { 226,  "IPNET" },
+    { 227,  "CAN_SOCKETCAN" },
+    { 228,  "IPV4" },
+    { 229,  "IPV6" },
+    { 230,  "IEEE802_15_4_NOFCS" },
+    { 231,  "DBUS" },
+    { 232,  "JUNIPER_VS" },             /* Juniper-private */
+    { 233,  "JUNIPER_SRX_E2E" },        /* Juniper-private */
+    { 234,  "JUNIPER_FIBRECHANNEL" },   /* Juniper-private */
+    { 235,  "DVB_CI" },
+    { 236,  "MUX27010" },
+    { 237,  "STANAG_5066_D_PDU" },
+    { 238,  "JUNIPER_ATM_CEMIC" },      /* Juniper-private */
+    { 239,  "NFLOG" },
+    { 240,  "NETANALYZER" },
+    { 241,  "NETANALYZER_TRANSPARENT" },
+    { 242,  "IPOIB" },
+    { 243,  "MPEG_2_TS" },
+    { 244,  "NG40" },
+    { 245,  "NFC_LLCP" },
+    { 246,  "PFSYNC" },
+    { 247,  "INFINIBAND" },
+    { 248,  "SCTP" },
+    { 249,  "USBPCAP" },
+    { 250,  "RTAC_SERIAL" },
+    { 251,  "BLUETOOTH_LE_LL" },
+    { 252,  "WIRESHARK_UPPER_PDU" },    /* Upper-layer protocol saves from Wireshark */
+    { 253,  "NETLINK" },
+    { 254,  "BLUETOOTH_LINUX_MONITOR" },
+    { 255,  "BLUETOOTH_BREDR_BB" },
+    { 256,  "BLUETOOTH_LE_LL_WITH_PHDR" },
+    { 257,  "PROFIBUS_DL" },
+    { 258,  "PKTAP" },
+    { 259,  "EPON" },
+    { 260,  "IPMI_HPM_2" },
+    { 261,  "ZWAVE_R1_R2" },
+    { 262,  "ZWAVE_R3" },
+    { 263,  "WATTSTOPPER_DLM" },
+    { 264,  "ISO_14443" },
+    { 0, NULL }
+};
+
+static const value_string pseudoheader_bluetooth_direction_vals[] = {
+    { 0,  "Sent" },
+    { 1,  "Recv" },
+    { 0, NULL }
+};
+
+static int
+dissect_pcap_pktdata(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
+{
+    gint         offset = 0;
+    guint32     *link_type;
+    guint32      length = 0;
+    tvbuff_t    *next_tvb;
+    proto_item  *pseudoheader_item;
+    proto_tree  *pseudoheader_tree = NULL;
+    proto_item  *packet_item;
+    proto_tree  *packet_tree;
+
+    DISSECTOR_ASSERT(data);
+
+    link_type = (guint32 *) data;
+    pinfo->phdr->pkt_encap = wtap_pcap_encap_to_wtap_encap(*link_type);
+
+    switch (*link_type) {
+    case 139:
+/* TODO no description for pseudoheader at http://www.tcpdump.org/linktypes.html */
+        break;
+    case 196:
+        length = 5;
+        break;
+    case 197:
+/* TODO no description for pseudoheader at http://www.tcpdump.org/linktypes.html */
+        break;
+    case 201:
+        length = 4;
+        break;
+    case 204:
+        length = 1;
+        break;
+    case 205:
+        length = 1;
+        break;
+    case 206:
+        length = 1;
+        break;
+    case 209:
+        length = 6;
+        break;
+    case 226:
+        length = 24;
+        break;
+    case 227:
+/* TODO no description for pseudoheader at http://www.tcpdump.org/linktypes.html */
+        break;
+    case 240:
+    case 241:
+        length = 4;
+        break;
+    case 244:
+        length = 20;
+        break;
+    case 245:
+        length = 20;
+        break;
+    }
+
+    if (length > 0) {
+        pseudoheader_item = proto_tree_add_item(tree, hf_pcap_pktdata_pseudoheader, tvb, offset, length, ENC_NA);
+        pseudoheader_tree = proto_item_add_subtree(pseudoheader_item, ett_pcap_pktdata_pseudoheader);
+    }
+
+    switch (*link_type) {
+    case 201:
+        proto_tree_add_item(pseudoheader_tree, hf_pcap_pktdata_pseudoheader_bluetooth_direction, tvb, offset, 4, ENC_BIG_ENDIAN);
+        if (tvb_get_guint32(tvb, offset, ENC_BIG_ENDIAN) == 0)
+            pinfo->p2p_dir = P2P_DIR_SENT;
+        else if (tvb_get_guint32(tvb, offset, ENC_BIG_ENDIAN) == 1)
+            pinfo->p2p_dir = P2P_DIR_RECV;
+        else
+            pinfo->p2p_dir = P2P_DIR_UNKNOWN;
+        offset += 4;
+        break;
+    default:
+        offset += length;
+    }
+
+    next_tvb = tvb_new_subset_remaining(tvb, offset);
+
+    packet_item = proto_tree_add_item(tree, hf_pcap_pktdata_data, tvb, offset, tvb_reported_length(next_tvb), ENC_NA);
+    packet_tree = proto_item_add_subtree(packet_item, ett_pcap_pktdata_data);
+
+    offset = dissector_try_uint_new(wtap_encap_table, pinfo->phdr->pkt_encap, next_tvb, pinfo, packet_tree, TRUE, NULL);
+
+    return offset;
+}
+
+void
+proto_register_pcap_pktdata(void)
+{
+    static hf_register_info hf[] = {
+        { &hf_pcap_pktdata_pseudoheader,
+            { "Pseudoheader",                              "pcap_pktdata.data.pseudoheader",
+            FT_NONE, BASE_NONE, NULL, 0x00,
+            NULL, HFILL }
+        },
+        { &hf_pcap_pktdata_pseudoheader_bluetooth_direction,
+            { "Direction",                                 "pcap_pktdata.pseudoheader.bluetooth.direction",
+            FT_UINT32, BASE_HEX, VALS(pseudoheader_bluetooth_direction_vals), 0x00,
+            NULL, HFILL }
+        },
+        { &hf_pcap_pktdata_data,
+            { "Data",                                      "pcap_pktdata.data",
+            FT_NONE, BASE_NONE, NULL, 0x00,
+            NULL, HFILL }
+        },
+    };
+
+    static gint *ett[] = {
+        &ett_pcap_pktdata_pseudoheader,
+        &ett_pcap_pktdata_data
+    };
+
+    proto_pcap_pktdata = proto_register_protocol("pcap/pcapng packet data", "pcap_pktdata", "pcap_pktdata");
+    proto_register_field_array(proto_pcap_pktdata, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    new_register_dissector("pcap_pktdata", dissect_pcap_pktdata, proto_pcap_pktdata);
+}
+
+void
+proto_reg_handoff_pcap_pktdata(void)
+{
+    wtap_encap_table = find_dissector_table("wtap_encap");
+}