/* vms.c
*
- * $Id: vms.c,v 1.12 2002/03/25 21:15:54 guy Exp $
+ * $Id$
*
* Wiretap Library
- * Copyright (c) 2001 by Marc Milgram <mmilgram@arrayinc.com>
+ * Copyright (c) 2001 by Marc Milgram <ethereal@mmilgram.NOSPAMmail.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include <string.h>
#include <ctype.h>
-/* This module reads the output of the 'TCPIPTRACE' command in VMS
- * It was initially based on toshiba.c.
- */
+/* This module reads the output of the various VMS TCPIP trace utilities
+ * such as TCPIPTRACE, TCPTRACE and UCX$TRACE
+ *
+ * It was initially based on toshiba.c and refined with code from cosine.c
+
+--------------------------------------------------------------------------------
+ Example TCPIPTRACE TCPTRACE output data:
-/*
- Example 'TCPIPTRACE' output data:
TCPIPtrace full display RCV packet 8 at 10-JUL-2001 14:54:19.56
IP Version = 4, IHL = 5, TOS = 00, Total Length = 84 = ^x0054
00000000 00000000 00000000 03000000 0030 ................
06000000 01000000 A5860100 00000000 0040 ................
00000000 0050 ....
+--------------------------------------------------------------------------------
+
+ Example UCX$TRACE output data:
+
+ UCX INTERnet trace RCV packet seq # = 1 at 14-MAY-2003 11:32:10.93
+
+ IP Version = 4, IHL = 5, TOS = 00, Total Length = 583 = ^x0247
+ IP Identifier = ^x702E, Flags (0=0,DF=0,MF=0),
+ Fragment Offset = 0 = ^x0000, Calculated Offset = 0 = ^x0000
+ IP TTL = 128 = ^x80, Protocol = 17 = ^x11, Header Checksum = ^x70EC
+ IP Source Address = 10.20.4.159
+ IP Destination Address = 10.20.4.255
+
+ UDP Source Port = 138, UDP Destination Port = 138
+ UDP Header and Datagram Length = 563 = ^x0233, Checksum = ^xB913
+
+ 9F04140A 70EC1180 0000702E 47020045 0000 E..G.p.....p....
+ B1B80E11 | B9133302 8A008A00 | FF04140A 0010 .........3......
+ 46484648 45200000 1D028A00 9F04140A 0020 ...........EHFHF
+ 43414341 4341434D 454D4546 45454550 0030 PEEEFEMEMCACACAC
+
+--------------------------------------------------------------------------------
+
+ Alternate UCX$TRACE type output data:
+
+ TCPIP INTERnet trace RCV packet seq # = 1 at 23-OCT-1998 15:19:33.29
+
+ IP Version = 4, IHL = 5, TOS = 00, Total Length = 217 = ^x00D9
+ IP Identifier = ^x0065, Flags (0=0,DF=0,MF=0),
+ Fragment Offset = 0 = ^x0000, Calculated Offset = 0 = ^x0000
+ IP TTL = 32 = ^x20, Protocol = 17 = ^x11, Header Checksum = ^x8F6C
+ IP Source Address = 16.20.168.93
+ IP Destination Address = 16.20.255.255
+
+ UDP Source Port = 138, UDP Destination Port = 138
+ UDP Header and Datagram Length = 197 = ^x00C5, Checksum = ^x0E77
+
+ 5DA81410 8F6C1120 00000065 D9000045 0000 E...awe.....l....]
+ | 0E77C500 8A008A00 | FFFF1410 0010 ..........w.
+
+--------------------------------------------------------------------------------
+
+The only difference between the utilities is the Packet header line, primarily
+the utility identifier and the packet sequence formats.
+
+There appear to be 2 formats for packet seqencing
+
+Format 1:
+
+ ... packet nn at DD-MMM-YYYY hh:mm:ss.ss
+
+Format 2:
+
+ ... packet seq # = nn at DD-MMM-YYYY hh:mm:ss.ss
+
+If there are other formats then code will have to be written in parse_vms_rec_hdr()
+to handle them.
--------------------------------------------------------------------------------
*/
-/* Magic text to check for VMS-ness of file */
-static const char vms_hdr_magic[] =
-{ 'T', 'C', 'P', 'I', 'P', 't', 'r', 'a', 'c', 'e', ' '};
-#define VMS_HDR_MAGIC_SIZE (sizeof vms_hdr_magic / sizeof vms_hdr_magic[0])
+/* Magic text to check for VMS-ness of file using possible utility names
+ *
+ */
+#define VMS_HDR_MAGIC_STR1 "TCPIPtrace"
+#define VMS_HDR_MAGIC_STR2 "TCPtrace"
+#define VMS_HDR_MAGIC_STR3 "INTERnet trace"
/* Magic text for start of packet */
-#define vms_rec_magic vms_hdr_magic
-#define VMS_REC_MAGIC_SIZE (sizeof vms_rec_magic / sizeof vms_rec_magic[0])
+#define VMS_REC_MAGIC_STR1 VMS_HDR_MAGIC_STR1
+#define VMS_REC_MAGIC_STR2 VMS_HDR_MAGIC_STR2
+#define VMS_REC_MAGIC_STR3 VMS_HDR_MAGIC_STR3
+
+#define VMS_HEADER_LINES_TO_CHECK 200
+#define VMS_LINE_LENGTH 240
-static gboolean vms_read(wtap *wth, int *err, long *data_offset);
-static gboolean vms_seek_read(wtap *wth, long seek_off,
- union wtap_pseudo_header *pseudo_header, guint8 *pd, int len, int *err);
+static gboolean vms_read(wtap *wth, int *err, gchar **err_info,
+ gint64 *data_offset);
+static gboolean vms_seek_read(wtap *wth, gint64 seek_off,
+ union wtap_pseudo_header *pseudo_header, guint8 *pd, int len,
+ int *err, gchar **err_info);
static gboolean parse_single_hex_dump_line(char* rec, guint8 *buf,
long byte_offset, int in_off, int remaining_bytes);
static gboolean parse_vms_hex_dump(FILE_T fh, int pkt_len, guint8* buf,
- int *err);
-static int parse_vms_rec_hdr(wtap *wth, FILE_T fh, int *err);
-
+ int *err, gchar **err_info);
+static int parse_vms_rec_hdr(wtap *wth, FILE_T fh, int *err, gchar **err_info);
#ifdef TCPIPTRACE_FRAGMENTS_HAVE_HEADER_LINE
/* Seeks to the beginning of the next packet, and returns the
byte offset. Returns -1 on failure, and sets "*err" to the error. */
static long vms_seek_next_packet(wtap *wth, int *err)
{
- int byte;
- unsigned int level = 0;
long cur_off;
-
- while ((byte = file_getc(wth->fh)) != EOF) {
- if ((level == 3) && (byte != vms_rec_magic[level]))
- level += 2; /* Accept TCPtrace as well as TCPIPtrace */
- if (byte == vms_rec_magic[level]) {
- level++;
- if (level >= VMS_REC_MAGIC_SIZE) {
- /* note: we're leaving file pointer right after the magic characters */
- cur_off = file_tell(wth->fh);
- if (cur_off == -1) {
- /* Error. */
- *err = file_error(wth->fh);
- return -1;
- }
- return cur_off + 1;
+ char buf[VMS_LINE_LENGTH];
+
+ while (1) {
+ cur_off = file_tell(wth->fh);
+ if (cur_off == -1) {
+ /* Error */
+ *err = file_error(wth->fh, err_info);
+ hdr = NULL;
+ return -1;
+ }
+ if (file_gets(buf, sizeof(buf), wth->fh) != NULL) {
+ if (strstr(buf, VMS_REC_MAGIC_STR1) ||
+ strstr(buf, VMS_REC_MAGIC_STR2) ||
+ strstr(buf, VMS_REC_MAGIC_STR2)) {
+ g_strlcpy(hdr, buf,VMS_LINE_LENGTH);
+ return cur_off;
}
} else {
- level = 0;
+ if (file_eof(wth->fh)) {
+ /* We got an EOF. */
+ *err = 0;
+ } else {
+ /* We (presumably) got an error (there's no
+ equivalent to "ferror()" in zlib, alas,
+ so we don't have a wrapper to check for
+ an error). */
+ *err = file_error(wth->fh, err_info);
+ }
+ break;
}
}
- if (file_eof(wth->fh)) {
- /* We got an EOF. */
- *err = 0;
- } else {
- /* We (presumably) got an error (there's no equivalent to "ferror()"
- in zlib, alas, so we don't have a wrapper to check for an error). */
- *err = file_error(wth->fh);
- }
+ hdr = NULL;
return -1;
}
#endif /* TCPIPTRACE_FRAGMENTS_HAVE_HEADER_LINE */
-#define VMS_HEADER_LINES_TO_CHECK 200
-#define VMS_LINE_LENGTH 240
-
/* Look through the first part of a file to see if this is
* a VMS trace file.
*
* Returns TRUE if it is, FALSE if it isn't or if we get an I/O error;
- * if we get an I/O error, "*err" will be set to a non-zero value.
+ * if we get an I/O error, "*err" will be set to a non-zero value and
+ * "*err_info will be set to null or an additional error string.
*
* Leaves file handle at begining of line that contains the VMS Magic
* identifier.
*/
-static gboolean vms_check_file_type(wtap *wth, int *err)
+static gboolean vms_check_file_type(wtap *wth, int *err, gchar **err_info)
{
- char buf[VMS_LINE_LENGTH];
- int line, byte;
- unsigned int reclen, i, level;
- long mpos;
-
- buf[VMS_LINE_LENGTH-1] = 0;
-
- for (line = 0; line < VMS_HEADER_LINES_TO_CHECK; line++) {
- mpos = file_tell(wth->fh);
- if (mpos == -1) {
- /* Error. */
- *err = file_error(wth->fh);
- return FALSE;
- }
- if (file_gets(buf, VMS_LINE_LENGTH, wth->fh) != NULL) {
-
- reclen = strlen(buf);
- if (reclen < VMS_HDR_MAGIC_SIZE)
- continue;
-
- level = 0;
- for (i = 0; i < reclen; i++) {
- byte = buf[i];
- if ((level == 3) && (byte != vms_hdr_magic[level]))
- level += 2; /* Accept TCPIPtrace as well as TCPtrace */
- if (byte == vms_hdr_magic[level]) {
- level++;
- if (level >= VMS_HDR_MAGIC_SIZE) {
- if (file_seek(wth->fh, mpos, SEEK_SET) == -1) {
- /* Error. */
- *err = file_error(wth->fh);
- return FALSE;
- }
- return TRUE;
- }
- }
- else
- level = 0;
- }
- }
- else {
- /* EOF or error. */
- if (file_eof(wth->fh))
- *err = 0;
- else
- *err = file_error(wth->fh);
- return FALSE;
- }
+ char buf[VMS_LINE_LENGTH];
+ guint reclen, line;
+ gint64 mpos;
+
+ buf[VMS_LINE_LENGTH-1] = '\0';
+
+ for (line = 0; line < VMS_HEADER_LINES_TO_CHECK; line++) {
+ mpos = file_tell(wth->fh);
+ if (mpos == -1) {
+ /* Error. */
+ *err = file_error(wth->fh, err_info);
+ return FALSE;
+ }
+ if (file_gets(buf, VMS_LINE_LENGTH, wth->fh) != NULL) {
+
+ reclen = (guint) strlen(buf);
+ if (reclen < strlen(VMS_HDR_MAGIC_STR1) ||
+ reclen < strlen(VMS_HDR_MAGIC_STR2) ||
+ reclen < strlen(VMS_HDR_MAGIC_STR3)) {
+ continue;
+ }
+
+ if (strstr(buf, VMS_HDR_MAGIC_STR1) ||
+ strstr(buf, VMS_HDR_MAGIC_STR2) ||
+ strstr(buf, VMS_HDR_MAGIC_STR3)) {
+ /* Go back to the beginning of this line, so we will
+ * re-read it. */
+ if (file_seek(wth->fh, mpos, SEEK_SET, err) == -1) {
+ /* Error. */
+ return FALSE;
+ }
+ return TRUE;
+ }
+ } else {
+ /* EOF or error. */
+ if (file_eof(wth->fh))
+ *err = 0;
+ else
+ *err = file_error(wth->fh, err_info);
+ return FALSE;
}
- *err = 0;
- return FALSE;
+ }
+ *err = 0;
+ return FALSE;
}
-int vms_open(wtap *wth, int *err)
+int vms_open(wtap *wth, int *err, gchar **err_info)
{
/* Look for VMS header */
- if (!vms_check_file_type(wth, err)) {
+ if (!vms_check_file_type(wth, err, err_info)) {
if (*err == 0)
return 0;
else
return -1;
}
- wth->data_offset = 0;
wth->file_encap = WTAP_ENCAP_RAW_IP;
wth->file_type = WTAP_FILE_VMS;
wth->snapshot_length = 0; /* not known */
wth->subtype_read = vms_read;
wth->subtype_seek_read = vms_seek_read;
+ wth->tsprecision = WTAP_FILE_TSPREC_CSEC;
return 1;
}
-/* Find the next packet and parse it; called from wtap_loop(). */
-static gboolean vms_read(wtap *wth, int *err, long *data_offset)
+/* Find the next packet and parse it; called from wtap_read(). */
+static gboolean vms_read(wtap *wth, int *err, gchar **err_info,
+ gint64 *data_offset)
{
- long offset = 0;
+ gint64 offset = 0;
guint8 *buf;
int pkt_len;
#else
offset = file_tell(wth->fh);
#endif
- if (offset < 1)
+ if (offset < 1) {
+ *err = file_error(wth->fh, err_info);
return FALSE;
+ }
/* Parse the header */
- pkt_len = parse_vms_rec_hdr(wth, wth->fh, err);
+ pkt_len = parse_vms_rec_hdr(wth, wth->fh, err, err_info);
if (pkt_len == -1)
return FALSE;
buf = buffer_start_ptr(wth->frame_buffer);
/* Convert the ASCII hex dump to binary data */
- if (!parse_vms_hex_dump(wth->fh, pkt_len, buf, err))
+ if (!parse_vms_hex_dump(wth->fh, pkt_len, buf, err, err_info))
return FALSE;
- wth->data_offset = offset;
*data_offset = offset;
return TRUE;
}
/* Used to read packets in random-access fashion */
static gboolean
-vms_seek_read (wtap *wth, long seek_off,
+vms_seek_read (wtap *wth, gint64 seek_off,
union wtap_pseudo_header *pseudo_header _U_,
- guint8 *pd, int len, int *err)
+ guint8 *pd, int len, int *err, gchar **err_info)
{
int pkt_len;
- if (file_seek(wth->random_fh, seek_off - 1, SEEK_SET) == -1) {
- *err = file_error(wth->random_fh);
+ if (file_seek(wth->random_fh, seek_off - 1, SEEK_SET, err) == -1)
return FALSE;
- }
- pkt_len = parse_vms_rec_hdr(NULL, wth->random_fh, err);
+ pkt_len = parse_vms_rec_hdr(NULL, wth->random_fh, err, err_info);
if (pkt_len != len) {
- if (pkt_len != -1)
- *err = WTAP_ERR_BAD_RECORD;
+ if (pkt_len != -1) {
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = g_strdup_printf("vms: requested length %d doesn't match length %d",
+ len, pkt_len);
+ }
return FALSE;
}
- return parse_vms_hex_dump(wth->random_fh, pkt_len, pd, err);
+ return parse_vms_hex_dump(wth->random_fh, pkt_len, pd, err, err_info);
}
/* isdumpline assumes that dump lines start with some non-alphanumerics
* by 3 spaces.
*/
static int
-isdumpline( guchar *line )
+isdumpline( gchar *line )
{
int i, j;
- while (*line && !isalnum(*line))
+ while (*line && !isalnum((guchar)*line))
line++;
for (j=0; j<4; j++) {
for (i=0; i<8; i++, line++)
- if (! isxdigit(*line))
+ if (! isxdigit((guchar)*line))
return FALSE;
for (i=0; i<3; i++, line++)
return FALSE;
}
- return isspace(*line);
+ return isspace((guchar)*line);
}
/* Parses a packet record header. */
static int
-parse_vms_rec_hdr(wtap *wth, FILE_T fh, int *err)
+parse_vms_rec_hdr(wtap *wth, FILE_T fh, int *err, gchar **err_info)
{
char line[VMS_LINE_LENGTH + 1];
int num_items_scanned;
int pkt_len = 0;
int pktnum;
int csec = 101;
- struct tm time;
+ struct tm tm;
char mon[4] = {'J', 'A', 'N', 0};
- guchar *p;
- static guchar months[] = "JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC";
-
- time.tm_year = 1970;
- time.tm_hour = 1;
- time.tm_min = 1;
- time.tm_sec = 1;
+ gchar *p;
+ static const gchar months[] = "JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC";
+ tm.tm_year = 1970;
+ tm.tm_mon = 0;
+ tm.tm_mday = 1;
+ tm.tm_hour = 1;
+ tm.tm_min = 1;
+ tm.tm_sec = 1;
/* Skip lines until one starts with a hex number */
do {
if (file_gets(line, VMS_LINE_LENGTH, fh) == NULL) {
- *err = file_error(fh);
+ *err = file_error(fh, err_info);
if ((*err == 0) && (csec != 101)) {
*err = WTAP_ERR_SHORT_READ;
}
}
line[VMS_LINE_LENGTH] = '\0';
- if ((csec == 101) && (p = strstr(line, "packet "))
+ if ((csec == 101) && (p = strstr(line, "packet ")) != NULL
&& (! strstr(line, "could not save "))) {
/* Find text in line starting with "packet ". */
- num_items_scanned = sscanf(p,
- "packet %d at %d-%3s-%d %d:%d:%d.%d",
- &pktnum, &time.tm_mday, mon,
- &time.tm_year, &time.tm_hour,
- &time.tm_min, &time.tm_sec, &csec);
+ /* First look for the Format 1 type sequencing */
+ num_items_scanned = sscanf(p,
+ "packet %9d at %2d-%3s-%4d %2d:%2d:%2d.%9d",
+ &pktnum, &tm.tm_mday, mon,
+ &tm.tm_year, &tm.tm_hour,
+ &tm.tm_min, &tm.tm_sec, &csec);
+ /* Next look for the Format 2 type sequencing */
if (num_items_scanned != 8) {
- *err = WTAP_ERR_BAD_RECORD;
+ num_items_scanned = sscanf(p,
+ "packet seq # = %9d at %2d-%3s-%4d %2d:%2d:%2d.%9d",
+ &pktnum, &tm.tm_mday, mon,
+ &tm.tm_year, &tm.tm_hour,
+ &tm.tm_min, &tm.tm_sec, &csec);
+ }
+ /* if unknown format then exit with error */
+ /* We will need to add code to handle new format */
+ if (num_items_scanned != 8) {
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = g_strdup_printf("vms: header line not valid");
return -1;
}
}
if ( (! pkt_len) && (p = strstr(line, "Length"))) {
p += sizeof("Length ");
- while (*p && ! isdigit(*p))
+ while (*p && ! isdigit((guchar)*p))
p++;
if ( !*p ) {
- *err = WTAP_ERR_BAD_RECORD;
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = g_strdup_printf("vms: Length field not valid");
return -1;
}
if (wth) {
p = strstr(months, mon);
if (p)
- time.tm_mon = (p - months) / 3;
- time.tm_year -= 1900;
+ tm.tm_mon = (int) (p - months) / 3;
+ tm.tm_year -= 1900;
- wth->phdr.ts.tv_sec = mktime(&time);
-
- wth->phdr.ts.tv_usec = csec * 10000;
+ tm.tm_isdst = -1;
+ wth->phdr.presence_flags = WTAP_HAS_TS;
+ wth->phdr.ts.secs = mktime(&tm);
+ wth->phdr.ts.nsecs = csec * 10000000;
wth->phdr.caplen = pkt_len;
wth->phdr.len = pkt_len;
- wth->phdr.pkt_encap = WTAP_ENCAP_RAW_IP;
}
return pkt_len;
/* Converts ASCII hex dump to binary data */
static gboolean
-parse_vms_hex_dump(FILE_T fh, int pkt_len, guint8* buf, int *err)
+parse_vms_hex_dump(FILE_T fh, int pkt_len, guint8* buf, int *err,
+ gchar **err_info)
{
- guchar line[VMS_LINE_LENGTH + 1];
+ gchar line[VMS_LINE_LENGTH + 1];
int i;
int offset = 0;
for (i = 0; i < pkt_len; i += 16) {
if (file_gets(line, VMS_LINE_LENGTH, fh) == NULL) {
- *err = file_error(fh);
+ *err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
if (i == 0) {
while (! isdumpline(line)) { /* advance to start of hex data */
if (file_gets(line, VMS_LINE_LENGTH, fh) == NULL) {
- *err = file_error(fh);
+ *err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
}
line[VMS_LINE_LENGTH] = '\0';
}
- while (line[offset] && !isxdigit(line[offset]))
+ while (line[offset] && !isxdigit((guchar)line[offset]))
offset++;
}
if (!parse_single_hex_dump_line(line, buf, i,
offset, pkt_len - i)) {
- *err = WTAP_ERR_BAD_RECORD;
+ *err = WTAP_ERR_BAD_FILE;
+ *err_info = g_strdup_printf("vms: hex dump not valid");
return FALSE;
}
}
/* Avoid TCPIPTRACE-W-BUFFERSFUL, TCPIPtrace could not save n packets.
- * errors. */
- file_gets(line, VMS_LINE_LENGTH, fh);
+ * errors.
+ *
+ * XXX - when we support packet drop report information in the
+ * Wiretap API, we should parse those lines and return "n" as
+ * a packet drop count. */
+ if (!file_gets(line, VMS_LINE_LENGTH, fh)) {
+ *err = file_error(fh, err_info);
+ if (*err == 0) {
+ /* There is no next line, so there's no "TCPIPtrace could not
+ * save n packets" line; not an error. */
+ return TRUE;
+ }
+ return FALSE;
+ }
return TRUE;
}
int i;
char *s;
int value;
- static int offsets[16] = {39,37,35,33,28,26,24,22,17,15,13,11,6,4,2,0};
+ static const int offsets[16] = {39,37,35,33,28,26,24,22,17,15,13,11,6,4,2,0};
char lbuf[3] = {0,0,0};
-
+
/* Get the byte_offset directly from the record */
s = rec;
- value = strtoul(s + 45 + in_off, NULL, 16);
-
+ value = (int)strtoul(s + 45 + in_off, NULL, 16); /* XXX - error check? */
+
if (value != byte_offset) {
return FALSE;
}
git.samba.org / metze / wireshark / wip.git / blobdiff