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Don't show time stamp-based information if we don't have it (now that we 

know whether packets - or "packets" - have time stamps).

Show the time stamp order as "Unknown" if we don't have enough
information to determine whether it's certainly in order or out of order
(XXX - we should do that if we have only one packet that has a time stamp).

svn path=/trunk/; revision=41186
This commit is contained in:
Guy Harris 2012-02-26 05:51:54 +00:00
parent b6ff142f60
commit 08d7ff268b
1 changed files with 105 additions and 36 deletions
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141
capinfos.c
View File

@ -148,7 +148,7 @@ 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_in_order = TRUE; /* Report if packets are in chronological order (True/False) */
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 */
@ -172,6 +172,22 @@ static gchar file_md5[HASH_STR_SIZE];
#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;
@ -179,6 +195,7 @@ typedef struct _capture_info {
gint64 filesize;
guint64 packet_bytes;
gboolean times_known;
double start_time;
double stop_time;
guint32 packet_count;
@ -193,7 +210,8 @@ typedef struct _capture_info {
double packet_rate;
double packet_size;
double data_rate; /* in bytes */
gboolean in_order;
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;
@ -213,7 +231,7 @@ enable_all_infos(void)
cap_duration = TRUE;
cap_start_time = TRUE;
cap_end_time = TRUE;
cap_in_order = TRUE;
cap_order = TRUE;
cap_data_rate_byte = TRUE;
cap_data_rate_bit = TRUE;
@ -240,7 +258,7 @@ disable_all_infos(void)
cap_duration = FALSE;
cap_start_time = FALSE;
cap_end_time = FALSE;
cap_in_order = FALSE;
cap_order = FALSE;
cap_data_rate_byte = FALSE;
cap_data_rate_bit = FALSE;
@ -252,6 +270,25 @@ disable_all_infos(void)
#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)
{
@ -259,7 +296,7 @@ time_string(time_t timer, capture_info *cf_info, gboolean want_lf)
static gchar time_string_buf[20];
char *time_string_ctime;
if (cf_info->packet_count > 0) {
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);
@ -344,13 +381,23 @@ print_stats(const gchar *filename, capture_info *cf_info)
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 (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 (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 (cap_packet_rate) print_value("Average packet rate: ", 2, " packets/sec", cf_info->packet_rate);
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);
@ -358,7 +405,7 @@ print_stats(const gchar *filename, capture_info *cf_info)
printf ("MD5: %s\n", file_md5);
}
#endif /* HAVE_LIBGCRYPT */
if (cap_in_order) printf ("Strict time order: %s\n", (cf_info->in_order) ? "True" : "False");
if (cap_order) printf ("Strict time order: %s\n", order_string(cf_info->order));
}
static void
@ -411,7 +458,7 @@ print_stats_table_header(void)
print_stats_table_header_label("MD5");
}
#endif /* HAVE_LIBGCRYPT */
if (cap_in_order) print_stats_table_header_label("Strict time order");
if (cap_order) print_stats_table_header_label("Strict time order");
printf("\n");
}
@ -508,7 +555,10 @@ print_stats_table(const gchar *filename, capture_info *cf_info)
if (cap_duration) {
putsep();
putquote();
printf("%f", cf_info->duration);
if (cf_info->times_known)
printf("%f", cf_info->duration);
else
printf("n/a");
putquote();
}
@ -529,14 +579,20 @@ print_stats_table(const gchar *filename, capture_info *cf_info)
if (cap_data_rate_byte) {
putsep();
putquote();
printf("%.2f", cf_info->data_rate);
if (cf_info->times_known)
printf("%.2f", cf_info->data_rate);
else
printf("n/a");
putquote();
}
if (cap_data_rate_bit) {
putsep();
putquote();
printf("%.2f", cf_info->data_rate*8);
if (cf_info->times_known)
printf("%.2f", cf_info->data_rate*8);
else
printf("n/a");
putquote();
}
@ -550,7 +606,10 @@ print_stats_table(const gchar *filename, capture_info *cf_info)
if (cap_packet_rate) {
putsep();
putquote();
printf("%.2f", cf_info->packet_rate);
if (cf_info->times_known)
printf("%.2f", cf_info->packet_rate);
else
printf("n/a");
putquote();
}
@ -573,10 +632,10 @@ print_stats_table(const gchar *filename, capture_info *cf_info)
}
#endif /* HAVE_LIBGCRYPT */
if (cap_in_order) {
if (cap_order) {
putsep();
putquote();
printf("%s", (cf_info->in_order) ? "True" : "False");
printf("%s", order_string(cf_info->order));
putquote();
}
@ -597,32 +656,40 @@ process_cap_file(wtap *wth, const char *filename)
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 in_order = TRUE;
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);
prev_time = cur_time;
cur_time = secs_nsecs(&phdr->ts);
if(packet==0) {
start_time = cur_time;
stop_time = cur_time;
if (phdr->presence_flags & WTAP_HAS_TS) {
prev_time = cur_time;
}
if (cur_time < prev_time) {
in_order = FALSE;
}
if (cur_time < start_time) {
start_time = cur_time;
}
if (cur_time > stop_time) {
stop_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;
@ -700,10 +767,12 @@ process_cap_file(wtap *wth, const char *filename)
cf_info.packet_count = packet;
/* File Times */
cf_info.times_known = have_times;
cf_info.start_time = start_time;
cf_info.stop_time = stop_time;
cf_info.duration = stop_time-start_time;
cf_info.in_order = in_order;
cf_info.know_order = know_order;
cf_info.order = order;
/* Number of packet bytes */
cf_info.packet_bytes = bytes;
@ -960,7 +1029,7 @@ main(int argc, char *argv[])
case 'o':
if (report_all_infos) disable_all_infos();
cap_in_order = TRUE;
cap_order = TRUE;
break;
case 'C':