wireshark/capinfos.c

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/* capinfos.c
* Reports capture file information including # of packets, duration, others
*
* Copyright 2004 Ian Schorr
*
* $Id$
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* 2009-09-19: jyoung
*
* New capinfos features
*
* Continue processing additional files after
* a wiretap open failure. The new -C option
* reverts to capinfos' original behavior which
* is to cancel any further file processing at
* first file open failure.
*
* Change the behavior of how the default display
* of all infos is initiated. This gets rid of a
* special post getopt() argument count test.
*
* Add new table output format (with related options)
* This feature allows outputting the various infos
* into a tab delimited text file, or to a comma
* separated variables file (*.csv) instead of the
* original "long" format.
*
* 2011-04-05: wmeier
* behaviour changed: Upon exit capinfos will return
* an error status if an error occurred at any
* point during "continuous" file processing.
* (Previously a success status was always
* returned if the -C option was not used).
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/filesystem.h>
#include <epan/plugins.h>
#include <epan/report_err.h>
#include "wtap.h"
#include <wsutil/privileges.h>
#ifdef HAVE_LIBGCRYPT
#include <gcrypt.h>
#include <wsutil/file_util.h>
#endif
#ifndef HAVE_GETOPT
#include "wsutil/wsgetopt.h"
#endif
#ifdef _WIN32
#include <wsutil/unicode-utils.h>
#endif /* _WIN32 */
#include "svnversion.h"
/*
* By default capinfos now continues processing
* the next filename if and when wiretap detects
* a problem opening a file.
* Use the '-C' option to revert back to original
* capinfos behavior which is to abort any
* additional file processing at first open file
* failure.
*/
static gboolean continue_after_wtap_open_offline_failure = TRUE;
/*
* table report variables
*/
static gboolean long_report = TRUE; /* By default generate long report */
static gchar table_report_header = TRUE; /* Generate column header by default */
static gchar field_separator = '\t'; /* Use TAB as field separator by default */
static gchar quote_char = '\0'; /* Do NOT quote fields by default */
/*
* capinfos has the ability to report on a number of
* various characteristics ("infos") for each input file.
*
* By default reporting of all info fields is enabled.
*
* Optionally the reporting of any specific info field
* or combination of info fields can be enabled with
* individual options.
*/
static gboolean report_all_infos = TRUE; /* Report all infos */
static gboolean cap_file_type = TRUE; /* Report capture type */
static gboolean cap_file_encap = TRUE; /* Report encapsulation */
static gboolean cap_snaplen = TRUE; /* Packet size limit (snaplen)*/
static gboolean cap_packet_count = TRUE; /* Report packet count */
static gboolean cap_file_size = TRUE; /* Report file size */
static gboolean cap_data_size = TRUE; /* Report packet byte size */
static gboolean cap_duration = TRUE; /* Report capture duration */
static gboolean cap_start_time = TRUE; /* Report capture start time */
static gboolean cap_end_time = TRUE; /* Report capture end time */
static gboolean time_as_secs = FALSE; /* Report time values as raw seconds */
static gboolean cap_data_rate_byte = TRUE; /* Report data rate bytes/sec */
static gboolean cap_data_rate_bit = TRUE; /* Report data rate bites/sec */
static gboolean cap_packet_size = TRUE; /* Report average packet size */
static gboolean cap_packet_rate = TRUE; /* Report average packet rate */
static gboolean cap_order = TRUE; /* Report if packets are in chronological order (True/False) */
#ifdef HAVE_LIBGCRYPT
static gboolean cap_file_hashes = TRUE; /* Calculate file hashes */
#endif
#ifdef HAVE_LIBGCRYPT
#define HASH_SIZE_SHA1 20
#define HASH_SIZE_RMD160 20
#define HASH_SIZE_MD5 16
#define HASH_STR_SIZE (41) /* Max hash size * 2 + '\0' */
#define HASH_BUF_SIZE (1024 * 1024)
static gchar file_sha1[HASH_STR_SIZE];
static gchar file_rmd160[HASH_STR_SIZE];
static gchar file_md5[HASH_STR_SIZE];
#define FILE_HASH_OPT "H"
#else
#define FILE_HASH_OPT ""
#endif /* HAVE_LIBGCRYPT */
/*
* If we have at least two packets with time stamps, and they're not in
* order - i.e., the later packet has a time stamp older than the earlier
* packet - the time stamps are known not to be in order.
*
* If every packet has a time stamp, and they're all in order, the time
* stamp is known to be in order.
*
* Otherwise, we have no idea.
*/
typedef enum {
IN_ORDER,
NOT_IN_ORDER,
ORDER_UNKNOWN
} order_t;
typedef struct _capture_info {
const char *filename;
guint16 file_type;
int file_encap;
gint64 filesize;
guint64 packet_bytes;
gboolean times_known;
double start_time;
double stop_time;
guint32 packet_count;
gboolean snap_set; /* If set in capture file header */
guint32 snaplen; /* value from the capture file header */
guint32 snaplen_min_inferred; /* If caplen < len for 1 or more rcds */
guint32 snaplen_max_inferred; /* ... */
gboolean drops_known;
guint32 drop_count;
double duration;
double packet_rate;
double packet_size;
double data_rate; /* in bytes */
gboolean know_order;
order_t order;
int *encap_counts; /* array of per_packet encap counts; array has one entry per wtap_encap type */
} capture_info;
static void
enable_all_infos(void)
{
report_all_infos = TRUE;
cap_file_type = TRUE;
cap_file_encap = TRUE;
cap_snaplen = TRUE;
cap_packet_count = TRUE;
cap_file_size = TRUE;
cap_data_size = TRUE;
cap_duration = TRUE;
cap_start_time = TRUE;
cap_end_time = TRUE;
cap_order = TRUE;
cap_data_rate_byte = TRUE;
cap_data_rate_bit = TRUE;
cap_packet_size = TRUE;
cap_packet_rate = TRUE;
#ifdef HAVE_LIBGCRYPT
cap_file_hashes = TRUE;
#endif /* HAVE_LIBGCRYPT */
}
static void
disable_all_infos(void)
{
report_all_infos = FALSE;
cap_file_type = FALSE;
cap_file_encap = FALSE;
cap_snaplen = FALSE;
cap_packet_count = FALSE;
cap_file_size = FALSE;
cap_data_size = FALSE;
cap_duration = FALSE;
cap_start_time = FALSE;
cap_end_time = FALSE;
cap_order = FALSE;
cap_data_rate_byte = FALSE;
cap_data_rate_bit = FALSE;
cap_packet_size = FALSE;
cap_packet_rate = FALSE;
#ifdef HAVE_LIBGCRYPT
cap_file_hashes = FALSE;
#endif /* HAVE_LIBGCRYPT */
}
static const gchar *
order_string(order_t order)
{
switch (order) {
case IN_ORDER:
return "True";
case NOT_IN_ORDER:
return "False";
case ORDER_UNKNOWN:
return "Unknown";
default:
return "???"; /* "cannot happen" (the next step is "Profit!") */
}
}
static gchar *
time_string(time_t timer, capture_info *cf_info, gboolean want_lf)
{
const gchar *lf = want_lf ? "\n" : "";
static gchar time_string_buf[20];
char *time_string_ctime;
if (cf_info->times_known && cf_info->packet_count > 0) {
if (time_as_secs) {
/* XXX - Would it be useful to show sub-second precision? */
g_snprintf(time_string_buf, 20, "%lu%s", (unsigned long)timer, lf);
return time_string_buf;
} else {
#ifdef _MSC_VER
/* calling localtime(), and thus ctime(), on MSVC 2005 with huge values causes it to crash */
/* XXX - find the exact value that still does work */
/* XXX - using _USE_32BIT_TIME_T might be another way to circumvent this problem */
if (timer > 2000000000) {
time_string_ctime = NULL;
} else
#endif
time_string_ctime = ctime(&timer);
if (time_string_ctime == NULL) {
g_snprintf(time_string_buf, 20, "Not representable%s", lf);
return time_string_buf;
}
if (!want_lf) {
/*
* The ctime() function returns a string formatted as:
* "Www Mmm dd hh:mm:ss yyyy\n"
* The unwanted '\n' is the 24th character.
*/
time_string_ctime[24] = '\0';
}
return time_string_ctime;
}
}
g_snprintf(time_string_buf, 15, "n/a%s", lf);
return time_string_buf;
}
static double
secs_nsecs(const struct wtap_nstime * nstime)
{
return (nstime->nsecs / 1000000000.0) + (double)nstime->secs;
}
static void print_value(const gchar *text_p1, gint width, const gchar *text_p2, double value) {
if (value > 0.0)
printf("%s%.*f%s\n", text_p1, width, value, text_p2);
else
printf("%sn/a\n", text_p1);
}
static void
print_stats(const gchar *filename, capture_info *cf_info)
{
const gchar *file_type_string, *file_encap_string;
time_t start_time_t;
time_t stop_time_t;
/* Build printable strings for various stats */
file_type_string = wtap_file_type_string(cf_info->file_type);
file_encap_string = wtap_encap_string(cf_info->file_encap);
start_time_t = (time_t)cf_info->start_time;
stop_time_t = (time_t)cf_info->stop_time;
if (filename) printf ("File name: %s\n", filename);
if (cap_file_type) printf ("File type: %s\n", file_type_string);
if (cap_file_encap) printf ("File encapsulation: %s\n", file_encap_string);
if (cap_file_encap && (cf_info->file_encap == WTAP_ENCAP_PER_PACKET)) {
int i;
for (i=0; i<WTAP_NUM_ENCAP_TYPES; i++) {
if (cf_info->encap_counts[i] > 0)
printf(" %s\n", wtap_encap_string(i));
}
}
if (cap_snaplen && cf_info->snap_set)
printf ("Packet size limit: file hdr: %u bytes\n", cf_info->snaplen);
else if(cap_snaplen && !cf_info->snap_set)
printf ("Packet size limit: file hdr: (not set)\n");
if (cf_info->snaplen_max_inferred > 0) {
if (cf_info->snaplen_min_inferred == cf_info->snaplen_max_inferred)
printf ("Packet size limit: inferred: %u bytes\n", cf_info->snaplen_min_inferred);
else
printf ("Packet size limit: inferred: %u bytes - %u bytes (range)\n",
cf_info->snaplen_min_inferred, cf_info->snaplen_max_inferred);
}
if (cap_packet_count) printf ("Number of packets: %u\n", cf_info->packet_count);
if (cap_file_size) printf ("File size: %" G_GINT64_MODIFIER "d bytes\n", cf_info->filesize);
if (cap_data_size) printf ("Data size: %" G_GINT64_MODIFIER "u bytes\n", cf_info->packet_bytes);
if (cf_info->times_known) {
if (cap_duration)
print_value("Capture duration: ", 0, " seconds", cf_info->duration);
if (cap_start_time)
printf ("Start time: %s", time_string(start_time_t, cf_info, TRUE));
if (cap_end_time)
printf ("End time: %s", time_string(stop_time_t, cf_info, TRUE));
if (cap_data_rate_byte)
print_value("Data byte rate: ", 2, " bytes/sec", cf_info->data_rate);
if (cap_data_rate_bit)
print_value("Data bit rate: ", 2, " bits/sec", cf_info->data_rate*8);
}
if (cap_packet_size) printf ("Average packet size: %.2f bytes\n", cf_info->packet_size);
if (cf_info->times_known) {
if (cap_packet_rate)
print_value("Average packet rate: ", 2, " packets/sec", cf_info->packet_rate);
}
#ifdef HAVE_LIBGCRYPT
if (cap_file_hashes) {
printf ("SHA1: %s\n", file_sha1);
printf ("RIPEMD160: %s\n", file_rmd160);
printf ("MD5: %s\n", file_md5);
}
#endif /* HAVE_LIBGCRYPT */
if (cap_order) printf ("Strict time order: %s\n", order_string(cf_info->order));
}
static void
putsep(void)
{
if (field_separator) putchar(field_separator);
}
static void
putquote(void)
{
if (quote_char) putchar(quote_char);
}
static void
print_stats_table_header_label(const gchar *label)
{
putsep();
putquote();
printf("%s", label);
putquote();
}
static void
print_stats_table_header(void)
{
putquote();
printf("File name");
putquote();
if (cap_file_type) print_stats_table_header_label("File type");
if (cap_file_encap) print_stats_table_header_label("File encapsulation");
if (cap_snaplen) print_stats_table_header_label("Packet size limit");
if (cap_snaplen) print_stats_table_header_label("Packet size limit min (inferred)");
if (cap_snaplen) print_stats_table_header_label("Packet size limit max (inferred)");
if (cap_packet_count) print_stats_table_header_label("Number of packets");
if (cap_file_size) print_stats_table_header_label("File size (bytes)");
if (cap_data_size) print_stats_table_header_label("Data size (bytes)");
if (cap_duration) print_stats_table_header_label("Capture duration (seconds)");
if (cap_start_time) print_stats_table_header_label("Start time");
if (cap_end_time) print_stats_table_header_label("End time");
if (cap_data_rate_byte) print_stats_table_header_label("Data byte rate (bytes/sec)");
if (cap_data_rate_bit) print_stats_table_header_label("Data bit rate (bits/sec)");
if (cap_packet_size) print_stats_table_header_label("Average packet size (bytes)");
if (cap_packet_rate) print_stats_table_header_label("Average packet rate (packets/sec)");
#ifdef HAVE_LIBGCRYPT
if (cap_file_hashes) {
print_stats_table_header_label("SHA1");
print_stats_table_header_label("RIPEMD160");
print_stats_table_header_label("MD5");
}
#endif /* HAVE_LIBGCRYPT */
if (cap_order) print_stats_table_header_label("Strict time order");
printf("\n");
}
static void
print_stats_table(const gchar *filename, capture_info *cf_info)
{
const gchar *file_type_string, *file_encap_string;
time_t start_time_t;
time_t stop_time_t;
/* Build printable strings for various stats */
file_type_string = wtap_file_type_string(cf_info->file_type);
file_encap_string = wtap_encap_string(cf_info->file_encap);
start_time_t = (time_t)cf_info->start_time;
stop_time_t = (time_t)cf_info->stop_time;
if (filename) {
putquote();
printf("%s", filename);
putquote();
}
if (cap_file_type) {
putsep();
putquote();
printf("%s", file_type_string);
putquote();
}
/* ToDo: If WTAP_ENCAP_PER_PACKET, show the list of encapsulations encountered;
* Output a line for each different encap with all fields repeated except
* the encapsulation field which has "Per Packet: ..." for each
* encapsulation type seen ?
*/
if (cap_file_encap) {
putsep();
putquote();
printf("%s", file_encap_string);
putquote();
}
if (cap_snaplen) {
putsep();
putquote();
if(cf_info->snap_set)
printf("%u", cf_info->snaplen);
else
printf("(not set)");
putquote();
if (cf_info->snaplen_max_inferred > 0) {
putsep();
putquote();
printf("%u", cf_info->snaplen_min_inferred);
putquote();
putsep();
putquote();
printf("%u", cf_info->snaplen_max_inferred);
putquote();
}
else {
putsep();
putquote();
printf("n/a");
putquote();
putsep();
putquote();
printf("n/a");
putquote();
}
}
if (cap_packet_count) {
putsep();
putquote();
printf("%u", cf_info->packet_count);
putquote();
}
if (cap_file_size) {
putsep();
putquote();
printf("%" G_GINT64_MODIFIER "d", cf_info->filesize);
putquote();
}
if (cap_data_size) {
putsep();
putquote();
printf("%" G_GINT64_MODIFIER "u", cf_info->packet_bytes);
putquote();
}
if (cap_duration) {
putsep();
putquote();
if (cf_info->times_known)
printf("%f", cf_info->duration);
else
printf("n/a");
putquote();
}
if (cap_start_time) {
putsep();
putquote();
printf("%s", time_string(start_time_t, cf_info, FALSE));
putquote();
}
if (cap_end_time) {
putsep();
putquote();
printf("%s", time_string(stop_time_t, cf_info, FALSE));
putquote();
}
if (cap_data_rate_byte) {
putsep();
putquote();
if (cf_info->times_known)
printf("%.2f", cf_info->data_rate);
else
printf("n/a");
putquote();
}
if (cap_data_rate_bit) {
putsep();
putquote();
if (cf_info->times_known)
printf("%.2f", cf_info->data_rate*8);
else
printf("n/a");
putquote();
}
if (cap_packet_size) {
putsep();
putquote();
printf("%.2f", cf_info->packet_size);
putquote();
}
if (cap_packet_rate) {
putsep();
putquote();
if (cf_info->times_known)
printf("%.2f", cf_info->packet_rate);
else
printf("n/a");
putquote();
}
#ifdef HAVE_LIBGCRYPT
if (cap_file_hashes) {
putsep();
putquote();
printf("%s", file_sha1);
putquote();
putsep();
putquote();
printf("%s", file_rmd160);
putquote();
putsep();
putquote();
printf("%s", file_md5);
putquote();
}
#endif /* HAVE_LIBGCRYPT */
if (cap_order) {
putsep();
putquote();
printf("%s", order_string(cf_info->order));
putquote();
}
printf("\n");
}
static int
process_cap_file(wtap *wth, const char *filename)
{
int err;
gchar *err_info;
gint64 size;
gint64 data_offset;
guint32 packet = 0;
gint64 bytes = 0;
guint32 snaplen_min_inferred = 0xffffffff;
guint32 snaplen_max_inferred = 0;
const struct wtap_pkthdr *phdr;
capture_info cf_info;
gboolean have_times = TRUE;
double start_time = 0;
double stop_time = 0;
double cur_time = 0;
double prev_time = 0;
gboolean know_order = FALSE;
order_t order = IN_ORDER;
cf_info.encap_counts = g_malloc0(WTAP_NUM_ENCAP_TYPES * sizeof(int));
/* Tally up data that we need to parse through the file to find */
while (wtap_read(wth, &err, &err_info, &data_offset)) {
phdr = wtap_phdr(wth);
if (phdr->presence_flags & WTAP_HAS_TS) {
prev_time = cur_time;
cur_time = secs_nsecs(&phdr->ts);
if(packet==0) {
start_time = cur_time;
stop_time = cur_time;
prev_time = cur_time;
}
if (cur_time < prev_time) {
order = NOT_IN_ORDER;
}
if (cur_time < start_time) {
start_time = cur_time;
}
if (cur_time > stop_time) {
stop_time = cur_time;
}
} else {
have_times = FALSE; /* at least one packet has no time stamp */
if (order != NOT_IN_ORDER)
order = ORDER_UNKNOWN;
}
bytes+=phdr->len;
packet++;
/* If caplen < len for a rcd, then presumably */
/* 'Limit packet capture length' was done for this rcd. */
/* Keep track as to the min/max actual snapshot lengths */
/* seen for this file. */
if (phdr->caplen < phdr->len) {
if (phdr->caplen < snaplen_min_inferred)
snaplen_min_inferred = phdr->caplen;
if (phdr->caplen > snaplen_max_inferred)
snaplen_max_inferred = phdr->caplen;
}
/* Per-packet encapsulation */
if (wtap_file_encap(wth) == WTAP_ENCAP_PER_PACKET) {
if ((phdr->pkt_encap > 0) && (phdr->pkt_encap < WTAP_NUM_ENCAP_TYPES)) {
cf_info.encap_counts[phdr->pkt_encap] += 1;
} else {
fprintf(stderr, "capinfos: Unknown per-packet encapsulation: %d [frame number: %d]\n", phdr->pkt_encap, packet);
}
}
} /* while */
if (err != 0) {
fprintf(stderr,
"capinfos: An error occurred after reading %u packets from \"%s\": %s.\n",
packet, filename, wtap_strerror(err));
switch (err) {
case WTAP_ERR_UNSUPPORTED:
case WTAP_ERR_UNSUPPORTED_ENCAP:
case WTAP_ERR_BAD_FILE:
case WTAP_ERR_DECOMPRESS:
fprintf(stderr, "(%s)\n", err_info);
g_free(err_info);
break;
}
g_free(cf_info.encap_counts);
return 1;
}
/* File size */
size = wtap_file_size(wth, &err);
if (size == -1) {
fprintf(stderr,
"capinfos: Can't get size of \"%s\": %s.\n",
filename, g_strerror(err));
g_free(cf_info.encap_counts);
return 1;
}