Guy
To answer your questions: Yes this is UTC time since the epoc.
What I am trying to dissect has a bitmask attached to it. So all I have
to do is check for fields available (which you will see below)
This is what I have done......I am confused on what you sent me. Can you
give me an more detailed example..?? Here is my code so far:
Right now all I am getting is just a number:
The end result, I would like to get something like this: Jan 21
2010 or 1/21/2010 or 1-21-2010
if ((fieldsAvail & 2) != 0) {
guint64 msecs_since_the_epoch;
nstime_t t;
msecs_since_the_epoch = *((guint64*) ptr);
t.secs = msecs_since_the_epoch/1000;
ptr += 8;
proto_tree_add_uint_format(helen_sub_tree,
hf_helen_length, tvb, offset, 8, 0,
"TIME %d", t.secs);
offset += 8;
}
Thanks,
Brian
Guy Harris wrote:
On Jan 20, 2010, at 1:34 PM, Brian Oleksa wrote:
I forgot to add the format of the time stamp that I am trying to get.
ms since the epoch (jan 1, 1970) as a 8 byte network byte order integer
Is there built in functions that can be used..??
Do you mean that you have a protocol that has an 8-byte network-byte-order integer whose value is a count of milliseconds since midnight, January 1, 1970?
The function to get the value would be tvb_get_ntoh64(), but that just gives you a guint64 count of milliseconds.
If you want to add that to the protocol tree as an FT_ABSOLUTE_TIME, that requires more work.
First - is that midnight, January 1, 1970, UTC, or midnight, January 1, 1970 *local* time? If it's local time, that's a bit more work; I'll assume it's UTC here.
Values for FT_ABSOLUTE_TIME fields are nstime_t's; those are structures with a "secs" and "nsecs" field. If you have a 64-bit milliseconds since the Epoch, and you want to convert it to an nstime_t for use with an FT_ABSOLUTE_TIME field, you'd do
guint64 msecs_since_the_epoch;
nstime_t t;
...
t.secs = msecs_since_the_epoch/1000;
t.nsecs = (msecs_since_the_epoch%1000)*1000000; /* milliseconds to nanoseconds */
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