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-rw-r--r--wiretap/iptrace.c909
1 files changed, 909 insertions, 0 deletions
diff --git a/wiretap/iptrace.c b/wiretap/iptrace.c
new file mode 100644
index 0000000..2b4e9d6
--- /dev/null
+++ b/wiretap/iptrace.c
@@ -0,0 +1,909 @@
+/* iptrace.c
+ *
+ * Wiretap Library
+ * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+#include "config.h"
+#include <stdlib.h>
+#include <string.h>
+#include "wtap-int.h"
+#include "file_wrappers.h"
+#include "atm.h"
+#include "iptrace.h"
+
+/*
+ * Private per-wtap_t data needed to read a file.
+ */
+typedef struct {
+ GHashTable *interface_ids; /* map name/description/link-layer type to interface ID */
+ guint num_interface_ids; /* Number of interface IDs assigned */
+} iptrace_t;
+
+#define IPTRACE_IFT_HF 0x3d /* Support for PERCS IP-HFI*/
+#define IPTRACE_IFT_IB 0xc7 /* IP over Infiniband. Number by IANA */
+
+static void iptrace_close(wtap *wth);
+
+static gboolean iptrace_read_1_0(wtap *wth, wtap_rec *rec,
+ Buffer *buf, int *err, gchar **err_info, gint64 *data_offset);
+static gboolean iptrace_seek_read_1_0(wtap *wth, gint64 seek_off,
+ wtap_rec *rec, Buffer *buf, int *err, gchar **err_info);
+
+static gboolean iptrace_read_2_0(wtap *wth, wtap_rec *rec,
+ Buffer *buf, int *err, gchar **err_info, gint64 *data_offset);
+static gboolean iptrace_seek_read_2_0(wtap *wth, gint64 seek_off,
+ wtap_rec *rec, Buffer *buf, int *err, gchar **err_info);
+
+static gboolean iptrace_read_rec_data(FILE_T fh, Buffer *buf,
+ wtap_rec *rec, int *err, gchar **err_info);
+static void fill_in_pseudo_header(int encap,
+ union wtap_pseudo_header *pseudo_header, const char *pkt_text);
+static int wtap_encap_ift(unsigned int ift);
+
+/*
+ * Size of the version string in the file header.
+ */
+#define VERSION_STRING_SIZE 11
+
+/*
+ * Hash table to map interface name and description, and link-layer
+ * type, to interface ID.
+ */
+#define PREFIX_SIZE 4
+
+typedef struct {
+ char prefix[PREFIX_SIZE+1];
+ guint8 unit;
+ guint8 if_type;
+} if_info;
+
+static int iptrace_1_0_file_type_subtype = -1;
+static int iptrace_2_0_file_type_subtype = -1;
+
+void register_iptrace(void);
+
+static gboolean destroy_if_info(gpointer key, gpointer value _U_,
+ gpointer user_data _U_)
+{
+ if_info *info = (if_info *)key;
+
+ g_free(info);
+
+ return TRUE;
+}
+
+static guint if_info_hash(gconstpointer info_arg)
+{
+ if_info *info = (if_info *)info_arg;
+
+ return g_str_hash(info->prefix) + info->unit + info->if_type;
+}
+
+static gboolean if_info_equal(gconstpointer info1_arg, gconstpointer info2_arg)
+{
+ if_info *info1 = (if_info *)info1_arg;
+ if_info *info2 = (if_info *)info2_arg;
+
+ return strcmp(info1->prefix, info2->prefix) == 0 &&
+ info1->unit == info2->unit &&
+ info1->if_type == info2->if_type;
+}
+
+wtap_open_return_val iptrace_open(wtap *wth, int *err, gchar **err_info)
+{
+ char version_string[VERSION_STRING_SIZE+1];
+ iptrace_t *iptrace;
+
+ if (!wtap_read_bytes(wth->fh, version_string, VERSION_STRING_SIZE,
+ err, err_info)) {
+ if (*err != WTAP_ERR_SHORT_READ)
+ return WTAP_OPEN_ERROR;
+ return WTAP_OPEN_NOT_MINE;
+ }
+ version_string[VERSION_STRING_SIZE] = '\0';
+
+ if (strcmp(version_string, "iptrace 1.0") == 0) {
+ wth->file_type_subtype = iptrace_1_0_file_type_subtype;
+ wth->subtype_read = iptrace_read_1_0;
+ wth->subtype_seek_read = iptrace_seek_read_1_0;
+ wth->file_tsprec = WTAP_TSPREC_SEC;
+ }
+ else if (strcmp(version_string, "iptrace 2.0") == 0) {
+ wth->file_type_subtype = iptrace_2_0_file_type_subtype;
+ wth->subtype_read = iptrace_read_2_0;
+ wth->subtype_seek_read = iptrace_seek_read_2_0;
+ wth->file_tsprec = WTAP_TSPREC_NSEC;
+ }
+ else {
+ return WTAP_OPEN_NOT_MINE;
+ }
+
+ /* This is an iptrace file */
+ wth->subtype_close = iptrace_close;
+ iptrace = g_new(iptrace_t, 1);
+ iptrace->interface_ids = g_hash_table_new(if_info_hash, if_info_equal);
+ iptrace->num_interface_ids = 0;
+ wth->priv = (void *)iptrace;
+
+ return WTAP_OPEN_MINE;
+}
+
+static void iptrace_close(wtap *wth)
+{
+ iptrace_t *iptrace = (iptrace_t *)wth->priv;
+
+ g_hash_table_foreach_remove(iptrace->interface_ids, destroy_if_info, NULL);
+ g_hash_table_destroy(iptrace->interface_ids);
+}
+
+static void add_new_if_info(iptrace_t *iptrace, if_info *info, gpointer *result)
+{
+ if_info *new_info = g_new(if_info, 1);
+ *new_info = *info;
+ *result = GUINT_TO_POINTER(iptrace->num_interface_ids);
+ g_hash_table_insert(iptrace->interface_ids, (gpointer)new_info, *result);
+ iptrace->num_interface_ids++;
+}
+
+/***********************************************************
+ * iptrace 1.0 *
+ ***********************************************************/
+
+/*
+ * iptrace 1.0, discovered through inspection
+ *
+ * Packet record contains:
+ *
+ * an initial header, with a length field and a time stamp, in
+ * seconds since the Epoch;
+ *
+ * data, with the specified length.
+ *
+ * The data contains:
+ *
+ * a bunch of information about the packet;
+ *
+ * padding, at least for FDDI;
+ *
+ * the raw packet data.
+ */
+
+/*
+ * Offsets of fields in the initial header.
+ */
+#define IPTRACE_1_0_REC_LENGTH_OFFSET 0 /* 0-3: size of record data */
+#define IPTRACE_1_0_TV_SEC_OFFSET 4 /* 4-7: time stamp, seconds since the Epoch */
+
+#define IPTRACE_1_0_PHDR_SIZE 8 /* initial header */
+
+/*
+ * Offsets of fields in the packet information.
+ */
+/* Bytes 0-2 unknown */
+#define IPTRACE_1_0_UNIT_OFFSET 3 /* 3: interface unit number */
+#define IPTRACE_1_0_PREFIX_OFFSET 4 /* 4-7: null-terminated name prefix */
+#define IPTRACE_1_0_PKT_TEXT_OFFSET 8 /* 8-19: text in 2.0; what is it in 1.0? */
+#define IPTRACE_1_0_IF_TYPE_OFFSET 20 /* 20: SNMP ifType value */
+#define IPTRACE_1_0_TX_FLAGS_OFFSET 21 /* 21: 0=receive, 1=transmit */
+
+#define IPTRACE_1_0_PINFO_SIZE 22 /* packet information */
+
+static gboolean
+iptrace_read_rec_1_0(wtap *wth, FILE_T fh, wtap_rec *rec, Buffer *buf,
+ int *err, gchar **err_info)
+{
+ iptrace_t *iptrace = (iptrace_t *)wth->priv;
+ guint8 header[IPTRACE_1_0_PHDR_SIZE];
+ guint32 record_length;
+ guint8 pkt_info[IPTRACE_1_0_PINFO_SIZE];
+ if_info info;
+ guint32 packet_size;
+ gpointer result;
+
+ if (!wtap_read_bytes_or_eof(fh, header, IPTRACE_1_0_PHDR_SIZE, err,
+ err_info)) {
+ /* Read error or EOF */
+ return FALSE;
+ }
+
+ /* Get the record length */
+ record_length = pntoh32(&header[IPTRACE_1_0_REC_LENGTH_OFFSET]);
+ if (record_length < IPTRACE_1_0_PINFO_SIZE) {
+ /*
+ * Uh-oh, the record isn't big enough to even have a
+ * packet information header.
+ */
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = ws_strdup_printf("iptrace: file has a %u-byte record, too small to have even a packet information header",
+ record_length);
+ return FALSE;
+ }
+
+ /*
+ * Get the packet information.
+ */
+ if (!wtap_read_bytes(fh, pkt_info, IPTRACE_1_0_PINFO_SIZE, err,
+ err_info)) {
+ /* Read error or EOF */
+ return FALSE;
+ }
+
+ /*
+ * The if_type field of the frame header appears to be an SNMP
+ * ifType value giving the type of the interface. Check out the
+ * <net/if_types.h> header file.
+ */
+ info.if_type = pkt_info[IPTRACE_1_0_IF_TYPE_OFFSET];
+ rec->rec_header.packet_header.pkt_encap = wtap_encap_ift(info.if_type);
+ if (rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_UNKNOWN) {
+ *err = WTAP_ERR_UNSUPPORTED;
+ *err_info = ws_strdup_printf("iptrace: interface type IFT=0x%02x unknown or unsupported",
+ info.if_type);
+ return FALSE;
+ }
+
+ /* Get the packet data size */
+ packet_size = record_length - IPTRACE_1_0_PINFO_SIZE;
+
+ /*
+ * AIX appears to put 3 bytes of padding in front of FDDI
+ * frames; strip that crap off.
+ */
+ if (rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_FDDI_BITSWAPPED) {
+ /*
+ * The packet size is really a record size and includes
+ * the padding.
+ */
+ if (packet_size < 3) {
+ /*
+ * Uh-oh, the record isn't big enough to even have
+ * the padding.
+ */
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = ws_strdup_printf("iptrace: file has a %u-byte record, too small to have even a packet meta-data header",
+ record_length);
+ return FALSE;
+ }
+ packet_size -= 3;
+
+ /*
+ * Skip the padding.
+ */
+ if (!wtap_read_bytes(fh, NULL, 3, err, err_info))
+ return FALSE;
+ }
+ if (packet_size > WTAP_MAX_PACKET_SIZE_STANDARD) {
+ /*
+ * Probably a corrupt capture file; don't blow up trying
+ * to allocate space for an immensely-large packet.
+ */
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = ws_strdup_printf("iptrace: File has %u-byte packet, bigger than maximum of %u",
+ packet_size, WTAP_MAX_PACKET_SIZE_STANDARD);
+ return FALSE;
+ }
+
+ rec->rec_type = REC_TYPE_PACKET;
+ rec->block = wtap_block_create(WTAP_BLOCK_PACKET);
+ rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_INTERFACE_ID;
+ rec->rec_header.packet_header.len = packet_size;
+ rec->rec_header.packet_header.caplen = packet_size;
+ rec->ts.secs = pntoh32(&header[IPTRACE_1_0_TV_SEC_OFFSET]);
+ rec->ts.nsecs = 0;
+ wtap_block_add_uint32_option(rec->block, OPT_PKT_FLAGS,
+ pkt_info[IPTRACE_1_0_TX_FLAGS_OFFSET] ?
+ (PACK_FLAGS_DIRECTION_OUTBOUND << PACK_FLAGS_DIRECTION_SHIFT) :
+ (PACK_FLAGS_DIRECTION_INBOUND << PACK_FLAGS_DIRECTION_SHIFT));
+
+ /* Fill in the pseudo-header. */
+ fill_in_pseudo_header(rec->rec_header.packet_header.pkt_encap,
+ &rec->rec_header.packet_header.pseudo_header,
+ (const char *)&pkt_info[IPTRACE_1_0_PKT_TEXT_OFFSET]);
+
+ /* Get the packet data */
+ if (!iptrace_read_rec_data(fh, buf, rec, err, err_info))
+ return FALSE;
+
+ /*
+ * No errors - get the interface ID.
+ *
+ * We do *not* trust the name to be null-terminated.
+ */
+ memcpy(info.prefix, &pkt_info[IPTRACE_1_0_PREFIX_OFFSET],
+ sizeof info.prefix);
+ info.prefix[PREFIX_SIZE] = '\0';
+ info.unit = pkt_info[IPTRACE_1_0_UNIT_OFFSET];
+
+ /*
+ * Try to find the entry with that name, description, and
+ * interface type.
+ */
+ if (!g_hash_table_lookup_extended(iptrace->interface_ids,
+ (gconstpointer)&info, NULL, &result)) {
+ wtap_block_t int_data;
+ wtapng_if_descr_mandatory_t *int_data_mand;
+
+ /*
+ * Not found; make a new entry.
+ */
+ add_new_if_info(iptrace, &info, &result);
+
+ /*
+ * Now make a new IDB and add it.
+ */
+ int_data = wtap_block_create(WTAP_BLOCK_IF_ID_AND_INFO);
+ int_data_mand = (wtapng_if_descr_mandatory_t *)wtap_block_get_mandatory_data(int_data);
+
+ int_data_mand->wtap_encap = rec->rec_header.packet_header.pkt_encap;
+ int_data_mand->tsprecision = WTAP_TSPREC_SEC;
+ int_data_mand->time_units_per_second = 1; /* No fractional time stamp */
+ int_data_mand->snap_len = WTAP_MAX_PACKET_SIZE_STANDARD; /* XXX - not known */
+
+ wtap_block_add_uint8_option(int_data, OPT_IDB_TSRESOL, 0); /* 1-second resolution */
+ /* Interface statistics */
+ int_data_mand->num_stat_entries = 0;
+ int_data_mand->interface_statistics = NULL;
+
+ wtap_block_set_string_option_value_format(int_data,
+ OPT_IDB_NAME, "%s%u", info.prefix, info.unit);
+ wtap_add_idb(wth, int_data);
+ }
+ rec->rec_header.packet_header.interface_id = GPOINTER_TO_UINT(result);
+ return TRUE;
+}
+
+/* Read the next packet */
+static gboolean iptrace_read_1_0(wtap *wth, wtap_rec *rec,
+ Buffer *buf, int *err, gchar **err_info, gint64 *data_offset)
+{
+ *data_offset = file_tell(wth->fh);
+
+ /* Read the packet */
+ if (!iptrace_read_rec_1_0(wth, wth->fh, rec, buf, err, err_info)) {
+ /* Read error or EOF */
+ return FALSE;
+ }
+
+ /* If the per-file encapsulation isn't known, set it to this
+ packet's encapsulation.
+
+ If it *is* known, and it isn't this packet's encapsulation,
+ set it to WTAP_ENCAP_PER_PACKET, as this file doesn't
+ have a single encapsulation for all packets in the file. */
+ if (wth->file_encap == WTAP_ENCAP_UNKNOWN)
+ wth->file_encap = rec->rec_header.packet_header.pkt_encap;
+ else {
+ if (wth->file_encap != rec->rec_header.packet_header.pkt_encap)
+ wth->file_encap = WTAP_ENCAP_PER_PACKET;
+ }
+
+ return TRUE;
+}
+
+static gboolean iptrace_seek_read_1_0(wtap *wth, gint64 seek_off,
+ wtap_rec *rec, Buffer *buf, int *err, gchar **err_info)
+{
+ if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
+ return FALSE;
+
+ /* Read the packet */
+ if (!iptrace_read_rec_1_0(wth, wth->random_fh, rec, buf, err,
+ err_info)) {
+ if (*err == 0)
+ *err = WTAP_ERR_SHORT_READ;
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/***********************************************************
+ * iptrace 2.0 *
+ ***********************************************************/
+
+/*
+ * iptrace 2.0, discovered through inspection
+ *
+ * Packet record contains:
+ *
+ * an initial header, with a length field and a time stamp, in
+ * seconds since the Epoch;
+ *
+ * data, with the specified length.
+ *
+ * The data contains:
+ *
+ * a bunch of information about the packet;
+ *
+ * padding, at least for FDDI;
+ *
+ * the raw packet data.
+ */
+
+/*
+ * Offsets of fields in the initial header.
+ */
+#define IPTRACE_2_0_REC_LENGTH_OFFSET 0 /* 0-3: size of record data */
+#define IPTRACE_2_0_TV_SEC0_OFFSET 4 /* 4-7: time stamp, seconds since the Epoch */
+
+#define IPTRACE_2_0_PHDR_SIZE 8 /* initial header */
+
+/*
+ * Offsets of fields in the packet information.
+ */
+/* Bytes 0-2 unknown */
+#define IPTRACE_2_0_UNIT_OFFSET 3 /* 3: interface unit number */
+#define IPTRACE_2_0_PREFIX_OFFSET 4 /* 4-7: null-terminated name prefix */
+#define IPTRACE_2_0_PKT_TEXT_OFFSET 8 /* 8-19: text stuff */
+#define IPTRACE_2_0_IF_TYPE_OFFSET 20 /* 20: SNMP ifType value */
+#define IPTRACE_2_0_TX_FLAGS_OFFSET 21 /* 21: 0=receive, 1=transmit */
+/* Bytes 22-23 unknown */
+#define IPTRACE_2_0_TV_SEC_OFFSET 24 /* 24-27: time stamp, seconds since the Epoch */
+#define IPTRACE_2_0_TV_NSEC_OFFSET 28 /* 28-31: nanoseconds since that second */
+
+#define IPTRACE_2_0_PINFO_SIZE 32 /* packet information */
+
+static gboolean
+iptrace_read_rec_2_0(wtap *wth, FILE_T fh, wtap_rec *rec, Buffer *buf,
+ int *err, gchar **err_info)
+{
+ iptrace_t *iptrace = (iptrace_t *)wth->priv;
+ guint8 header[IPTRACE_2_0_PHDR_SIZE];
+ guint32 record_length;
+ guint8 pkt_info[IPTRACE_2_0_PINFO_SIZE];
+ if_info info;
+ guint32 packet_size;
+ gpointer result;
+
+ if (!wtap_read_bytes_or_eof(fh, header, IPTRACE_2_0_PHDR_SIZE, err,
+ err_info)) {
+ /* Read error or EOF */
+ return FALSE;
+ }
+
+ /* Get the record length */
+ record_length = pntoh32(&header[IPTRACE_2_0_REC_LENGTH_OFFSET]);
+ if (record_length < IPTRACE_2_0_PINFO_SIZE) {
+ /*
+ * Uh-oh, the record isn't big enough to even have a
+ * packet information header.
+ */
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = ws_strdup_printf("iptrace: file has a %u-byte record, too small to have even a packet information header",
+ record_length);
+ return FALSE;
+ }
+
+ /*
+ * Get the packet information.
+ */
+ if (!wtap_read_bytes(fh, pkt_info, IPTRACE_2_0_PINFO_SIZE, err,
+ err_info)) {
+ /* Read error or EOF */
+ return FALSE;
+ }
+
+ /*
+ * The if_type field of the frame header appears to be an SNMP
+ * ifType value giving the type of the interface. Check out the
+ * <net/if_types.h> header file.
+ */
+ info.if_type = pkt_info[IPTRACE_2_0_IF_TYPE_OFFSET];
+ rec->rec_header.packet_header.pkt_encap = wtap_encap_ift(info.if_type);
+#if 0
+ /*
+ * We used to error out if the interface type in iptrace was
+ * unknown/unhandled, but an iptrace may contain packets
+ * from a variety of interfaces, some known, and others
+ * unknown.
+ *
+ * It is better to display the data even for unknown interface
+ * types, isntead of erroring out. In the future, it would be
+ * nice to be able to flag which frames are shown as data
+ * because their interface type is unknown, and also present
+ * the interface type number to the user so that it can be
+ * reported easily back to the Wireshark developer.
+ *
+ * XXX - what types are there that are used in files but
+ * that we don't handle?
+ */
+ if (rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_UNKNOWN) {
+ *err = WTAP_ERR_UNSUPPORTED;
+ *err_info = ws_strdup_printf("iptrace: interface type IFT=0x%02x unknown or unsupported",
+ info.if_type);
+ return FALSE;
+ }
+#endif
+
+ /* Get the packet data size */
+ packet_size = record_length - IPTRACE_2_0_PINFO_SIZE;
+
+ /*
+ * AIX appears to put 3 bytes of padding in front of FDDI
+ * frames; strip that crap off.
+ */
+ if (rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_FDDI_BITSWAPPED) {
+ /*
+ * The packet size is really a record size and includes
+ * the padding.
+ */
+ if (packet_size < 3) {
+ /*
+ * Uh-oh, the record isn't big enough to even have
+ * the padding.
+ */
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = ws_strdup_printf("iptrace: file has a %u-byte record, too small to have even a packet meta-data header",
+ record_length);
+ return FALSE;
+ }
+ packet_size -= 3;
+
+ /*
+ * Skip the padding.
+ */
+ if (!wtap_read_bytes(fh, NULL, 3, err, err_info))
+ return FALSE;
+ }
+ if (packet_size > WTAP_MAX_PACKET_SIZE_STANDARD) {
+ /*
+ * Probably a corrupt capture file; don't blow up trying
+ * to allocate space for an immensely-large packet.
+ */
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = ws_strdup_printf("iptrace: File has %u-byte packet, bigger than maximum of %u",
+ packet_size, WTAP_MAX_PACKET_SIZE_STANDARD);
+ return FALSE;
+ }
+
+ rec->rec_type = REC_TYPE_PACKET;
+ rec->block = wtap_block_create(WTAP_BLOCK_PACKET);
+ rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_INTERFACE_ID;
+ rec->rec_header.packet_header.len = packet_size;
+ rec->rec_header.packet_header.caplen = packet_size;
+ rec->ts.secs = pntoh32(&pkt_info[IPTRACE_2_0_TV_SEC_OFFSET]);
+ rec->ts.nsecs = pntoh32(&pkt_info[IPTRACE_2_0_TV_NSEC_OFFSET]);
+ wtap_block_add_uint32_option(rec->block, OPT_PKT_FLAGS,
+ pkt_info[IPTRACE_2_0_TX_FLAGS_OFFSET] ?
+ (PACK_FLAGS_DIRECTION_OUTBOUND << PACK_FLAGS_DIRECTION_SHIFT) :
+ (PACK_FLAGS_DIRECTION_INBOUND << PACK_FLAGS_DIRECTION_SHIFT));
+
+ /* Fill in the pseudo-header. */
+ fill_in_pseudo_header(rec->rec_header.packet_header.pkt_encap,
+ &rec->rec_header.packet_header.pseudo_header,
+ (const char *)&pkt_info[IPTRACE_1_0_PKT_TEXT_OFFSET]);
+
+ /* Get the packet data */
+ if (!iptrace_read_rec_data(fh, buf, rec, err, err_info))
+ return FALSE;
+
+ /*
+ * No errors - get the interface ID.
+ *
+ * We do *not* trust the name to be null-terminated.
+ */
+ memcpy(info.prefix, &pkt_info[IPTRACE_2_0_PREFIX_OFFSET],
+ sizeof info.prefix);
+ info.prefix[PREFIX_SIZE] = '\0';
+ info.unit = pkt_info[IPTRACE_2_0_UNIT_OFFSET];
+
+ /*
+ * Try to find the entry with that name, description, and
+ * interface type.
+ */
+ if (!g_hash_table_lookup_extended(iptrace->interface_ids,
+ (gconstpointer)&info, NULL, &result)) {
+ wtap_block_t int_data;
+ wtapng_if_descr_mandatory_t *int_data_mand;
+
+ /*
+ * Not found; make a new entry.
+ */
+ add_new_if_info(iptrace, &info, &result);
+
+ /*
+ * Now make a new IDB and add it.
+ */
+ int_data = wtap_block_create(WTAP_BLOCK_IF_ID_AND_INFO);
+ int_data_mand = (wtapng_if_descr_mandatory_t *)wtap_block_get_mandatory_data(int_data);
+
+ int_data_mand->wtap_encap = rec->rec_header.packet_header.pkt_encap;
+ int_data_mand->tsprecision = WTAP_TSPREC_NSEC;
+ int_data_mand->time_units_per_second = 1000000000; /* Nanosecond resolution */
+ int_data_mand->snap_len = WTAP_MAX_PACKET_SIZE_STANDARD; /* XXX - not known */
+
+ wtap_block_add_uint8_option(int_data, OPT_IDB_TSRESOL, 0x09); /* nanosecond resolution */
+ /* Interface statistics */
+ int_data_mand->num_stat_entries = 0;
+ int_data_mand->interface_statistics = NULL;
+
+ wtap_block_set_string_option_value_format(int_data,
+ OPT_IDB_NAME, "%s%u", info.prefix, info.unit);
+ wtap_add_idb(wth, int_data);
+ }
+ rec->rec_header.packet_header.interface_id = GPOINTER_TO_UINT(result);
+ return TRUE;
+}
+
+/* Read the next packet */
+static gboolean iptrace_read_2_0(wtap *wth, wtap_rec *rec,
+ Buffer *buf, int *err, gchar **err_info, gint64 *data_offset)
+{
+ *data_offset = file_tell(wth->fh);
+
+ /* Read the packet */
+ if (!iptrace_read_rec_2_0(wth, wth->fh, rec, buf, err, err_info)) {
+ /* Read error or EOF */
+ return FALSE;
+ }
+
+ /* If the per-file encapsulation isn't known, set it to this
+ packet's encapsulation.
+
+ If it *is* known, and it isn't this packet's encapsulation,
+ set it to WTAP_ENCAP_PER_PACKET, as this file doesn't
+ have a single encapsulation for all packets in the file. */
+ if (wth->file_encap == WTAP_ENCAP_UNKNOWN)
+ wth->file_encap = rec->rec_header.packet_header.pkt_encap;
+ else {
+ if (wth->file_encap != rec->rec_header.packet_header.pkt_encap)
+ wth->file_encap = WTAP_ENCAP_PER_PACKET;
+ }
+
+ return TRUE;
+}
+
+static gboolean iptrace_seek_read_2_0(wtap *wth, gint64 seek_off,
+ wtap_rec *rec, Buffer *buf, int *err, gchar **err_info)
+{
+ if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
+ return FALSE;
+
+ /* Read the packet */
+ if (!iptrace_read_rec_2_0(wth, wth->random_fh, rec, buf, err,
+ err_info)) {
+ if (*err == 0)
+ *err = WTAP_ERR_SHORT_READ;
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+iptrace_read_rec_data(FILE_T fh, Buffer *buf, wtap_rec *rec,
+ int *err, gchar **err_info)
+{
+ if (!wtap_read_packet_bytes(fh, buf, rec->rec_header.packet_header.caplen, err, err_info))
+ return FALSE;
+
+ if (rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ATM_PDUS) {
+ /*
+ * Attempt to guess from the packet data, the VPI,
+ * and the VCI information about the type of traffic.
+ */
+ atm_guess_traffic_type(rec, ws_buffer_start_ptr(buf));
+ }
+
+ return TRUE;
+}
+
+/*
+ * Fill in the pseudo-header information we can.
+ *
+ * For ATM traffic, "iptrace", alas, doesn't tell us what type of traffic
+ * is in the packet - it was presumably run on a machine that was one of
+ * the endpoints of the connection, so in theory it could presumably have
+ * told us, but, for whatever reason, it failed to do so - perhaps the
+ * low-level mechanism that feeds the presumably-AAL5 frames to us doesn't
+ * have access to that information (e.g., because it's in the ATM driver,
+ * and the ATM driver merely knows that stuff on VPI/VCI X.Y should be
+ * handed up to some particular client, it doesn't know what that client is).
+ *
+ * We let our caller try to figure out what kind of traffic it is, either
+ * by guessing based on the VPI/VCI, guessing based on the header of the
+ * packet, seeing earlier traffic that set up the circuit and specified
+ * in some fashion what sort of traffic it is, or being told by the user.
+ */
+static void
+fill_in_pseudo_header(int encap, union wtap_pseudo_header *pseudo_header,
+ const char *pkt_text)
+{
+ char if_text[9];
+ char *decimal;
+ int Vpi = 0;
+ int Vci = 0;
+
+ switch (encap) {
+
+ case WTAP_ENCAP_ATM_PDUS:
+ /* Rip apart the "x.y" text into Vpi/Vci numbers */
+ memcpy(if_text, &pkt_text[4], 8);
+ if_text[8] = '\0';
+ decimal = strchr(if_text, '.');
+ if (decimal) {
+ *decimal = '\0';
+ Vpi = (int)strtoul(if_text, NULL, 10);
+ decimal++;
+ Vci = (int)strtoul(decimal, NULL, 10);
+ }
+
+ /*
+ * OK, which value means "DTE->DCE" and which value means
+ * "DCE->DTE"?
+ */
+ pseudo_header->atm.channel = pkt_text[13];
+
+ pseudo_header->atm.vpi = Vpi;
+ pseudo_header->atm.vci = Vci;
+
+ /* We don't have this information */
+ pseudo_header->atm.flags = 0;
+ pseudo_header->atm.cells = 0;
+ pseudo_header->atm.aal5t_u2u = 0;
+ pseudo_header->atm.aal5t_len = 0;
+ pseudo_header->atm.aal5t_chksum = 0;
+ break;
+
+ case WTAP_ENCAP_ETHERNET:
+ /* We assume there's no FCS in this frame. */
+ pseudo_header->eth.fcs_len = 0;
+ break;
+ }
+}
+
+/* Given an RFC1573 (SNMP ifType) interface type,
+ * return the appropriate Wiretap Encapsulation Type.
+ */
+static int
+wtap_encap_ift(unsigned int ift)
+{
+
+ static const int ift_encap[] = {
+/* 0x0 */ WTAP_ENCAP_UNKNOWN, /* nothing */
+/* 0x1 */ WTAP_ENCAP_UNKNOWN, /* IFT_OTHER */
+/* 0x2 */ WTAP_ENCAP_UNKNOWN, /* IFT_1822 */
+/* 0x3 */ WTAP_ENCAP_UNKNOWN, /* IFT_HDH1822 */
+/* 0x4 */ WTAP_ENCAP_RAW_IP, /* IFT_X25DDN */
+/* 0x5 */ WTAP_ENCAP_UNKNOWN, /* IFT_X25 */
+/* 0x6 */ WTAP_ENCAP_ETHERNET, /* IFT_ETHER */
+/* 0x7 */ WTAP_ENCAP_ETHERNET, /* IFT_ISO88023 */
+/* 0x8 */ WTAP_ENCAP_UNKNOWN, /* IFT_ISO88024 */
+/* 0x9 */ WTAP_ENCAP_TOKEN_RING, /* IFT_ISO88025 */
+/* 0xa */ WTAP_ENCAP_UNKNOWN, /* IFT_ISO88026 */
+/* 0xb */ WTAP_ENCAP_UNKNOWN, /* IFT_STARLAN */
+/* 0xc */ WTAP_ENCAP_RAW_IP, /* IFT_P10, IBM SP switch */
+/* 0xd */ WTAP_ENCAP_UNKNOWN, /* IFT_P80 */
+/* 0xe */ WTAP_ENCAP_UNKNOWN, /* IFT_HY */
+/* 0xf */ WTAP_ENCAP_FDDI_BITSWAPPED, /* IFT_FDDI */
+/* 0x10 */ WTAP_ENCAP_LAPB, /* IFT_LAPB */ /* no data to back this up */
+/* 0x11 */ WTAP_ENCAP_UNKNOWN, /* IFT_SDLC */
+/* 0x12 */ WTAP_ENCAP_UNKNOWN, /* IFT_T1 */
+/* 0x13 */ WTAP_ENCAP_UNKNOWN, /* IFT_CEPT */
+/* 0x14 */ WTAP_ENCAP_UNKNOWN, /* IFT_ISDNBASIC */
+/* 0x15 */ WTAP_ENCAP_UNKNOWN, /* IFT_ISDNPRIMARY */
+/* 0x16 */ WTAP_ENCAP_UNKNOWN, /* IFT_PTPSERIAL */
+/* 0x17 */ WTAP_ENCAP_UNKNOWN, /* IFT_PPP */
+/* 0x18 */ WTAP_ENCAP_RAW_IP, /* IFT_LOOP */
+/* 0x19 */ WTAP_ENCAP_UNKNOWN, /* IFT_EON */
+/* 0x1a */ WTAP_ENCAP_UNKNOWN, /* IFT_XETHER */
+/* 0x1b */ WTAP_ENCAP_UNKNOWN, /* IFT_NSIP */
+/* 0x1c */ WTAP_ENCAP_UNKNOWN, /* IFT_SLIP */
+/* 0x1d */ WTAP_ENCAP_UNKNOWN, /* IFT_ULTRA */
+/* 0x1e */ WTAP_ENCAP_UNKNOWN, /* IFT_DS3 */
+/* 0x1f */ WTAP_ENCAP_UNKNOWN, /* IFT_SIP */
+/* 0x20 */ WTAP_ENCAP_UNKNOWN, /* IFT_FRELAY */
+/* 0x21 */ WTAP_ENCAP_UNKNOWN, /* IFT_RS232 */
+/* 0x22 */ WTAP_ENCAP_UNKNOWN, /* IFT_PARA */
+/* 0x23 */ WTAP_ENCAP_UNKNOWN, /* IFT_ARCNET */
+/* 0x24 */ WTAP_ENCAP_UNKNOWN, /* IFT_ARCNETPLUS */
+/* 0x25 */ WTAP_ENCAP_ATM_PDUS, /* IFT_ATM */
+ };
+ #define NUM_IFT_ENCAPS (sizeof ift_encap / sizeof ift_encap[0])
+
+ if (ift < NUM_IFT_ENCAPS) {
+ return ift_encap[ift];
+ }
+ else {
+ switch(ift) {
+ /* Infiniband*/
+ case IPTRACE_IFT_IB:
+ return WTAP_ENCAP_INFINIBAND;
+ break;
+
+ /* Host Fabric Interface */
+ case IPTRACE_IFT_HF:
+ /* The HFI interface on AIX provides raw IP
+ in the packet trace. It's unclear if the HFI
+ can be configured for any other protocol, and if
+ any field in the iptrace header indicates what
+ that protocol is. For now, we are hard-coding
+ this as RAW_IP, but if we find another iptrace file
+ using HFI that provides another protocol, we will
+ have to figure out which field in the iptrace file
+ encodes it. */
+ return WTAP_ENCAP_RAW_IP;
+ break;
+
+ default:
+ return WTAP_ENCAP_UNKNOWN;
+ }
+ }
+}
+
+/* Options for interface blocks. */
+static const struct supported_option_type interface_block_options_supported[] = {
+ /* No comments, just an interface name. */
+ { OPT_IDB_NAME, ONE_OPTION_SUPPORTED }
+};
+
+static const struct supported_block_type iptrace_1_0_blocks_supported[] = {
+ /*
+ * iptrace supports multiple interfaces, with descriptions, and
+ * supports associating packets with interfaces. Interface
+ * description blocks are used for that.
+ */
+ { WTAP_BLOCK_IF_ID_AND_INFO, MULTIPLE_BLOCKS_SUPPORTED, OPTION_TYPES_SUPPORTED(interface_block_options_supported) },
+
+ /*
+ * iptrace is a capture format, so it obviously supports packets.
+ * It supports no packet options, however.
+ */
+ { WTAP_BLOCK_PACKET, MULTIPLE_BLOCKS_SUPPORTED, NO_OPTIONS_SUPPORTED }
+};
+
+static const struct file_type_subtype_info iptrace_1_0_info = {
+ "AIX iptrace 1.0", "iptrace_1", NULL, NULL,
+ FALSE, BLOCKS_SUPPORTED(iptrace_1_0_blocks_supported),
+ NULL, NULL, NULL
+};
+
+static const struct supported_block_type iptrace_2_0_blocks_supported[] = {
+ /*
+ * iptrace supports multiple interfaces, with descriptions, and
+ * supports associating packets with interfaces. Interface
+ * description blocks are used for that.
+ */
+ { WTAP_BLOCK_IF_ID_AND_INFO, MULTIPLE_BLOCKS_SUPPORTED, OPTION_TYPES_SUPPORTED(interface_block_options_supported) },
+
+ /*
+ * iptrace is a capture format, so it obviously supports packets.
+ * It supports no packet options, however.
+ */
+ { WTAP_BLOCK_PACKET, MULTIPLE_BLOCKS_SUPPORTED, NO_OPTIONS_SUPPORTED }
+};
+
+static const struct file_type_subtype_info iptrace_2_0_info = {
+ "AIX iptrace 2.0", "iptrace_2", NULL, NULL,
+ FALSE, BLOCKS_SUPPORTED(iptrace_2_0_blocks_supported),
+ NULL, NULL, NULL
+};
+
+void register_iptrace(void)
+{
+ iptrace_1_0_file_type_subtype = wtap_register_file_type_subtype(&iptrace_1_0_info);
+ iptrace_2_0_file_type_subtype = wtap_register_file_type_subtype(&iptrace_2_0_info);
+
+ /*
+ * Register names for backwards compatibility with the
+ * wtap_filetypes table in Lua.
+ */
+ wtap_register_backwards_compatibility_lua_name("IPTRACE_1_0",
+ iptrace_1_0_file_type_subtype);
+ wtap_register_backwards_compatibility_lua_name("IPTRACE_2_0",
+ iptrace_2_0_file_type_subtype);
+}
+
+/*
+ * 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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