long; that means we read only one byte into our structure, so make its
"rate" element one byte long, so we don't fill in half the "rate"
element with the read - and the *wrong* half on big-endian machines -
and leave the other half un-set and thus containing some random possibly
non-zero data.
In addition, that's not the full data rate for faster networks; for
Wi-Fi, the one-byte "direction" field is actually the upper 8 bits of
the data rate, so combine them when we fill in the data rate in the
pseudo-header.
#BACKPORT
svn path=/trunk/; revision=45504
which could use lseek() and were thus expensive due to system call
overhead. To avoid making a system call for every packet on a
sequential read, we maintained a data_offset field in the wtap structure
for sequential reads.
It's now a routine that just returns information from the FILE_T data
structure, so it's cheap. Use it, rather than maintaining the data_offset
field.
Readers for some file formats need to maintain file offset themselves;
have them do so in their private data structures.
svn path=/trunk/; revision=42423
by Wiretap, to indicate whether certain fields in that structure
actually have data in them.
Use the "time stamp present" flag to omit showing time stamp information
for packets (and "packets") that don't have time stamps; don't bother
working very hard to "fake" a time stamp for data files.
Use the "interface ID present" flag to omit the interface ID for packets
that don't have an interface ID.
We don't use the "captured length, separate from packet length, present"
flag to omit the captured length; that flag might be present but equal
to the packet length, and if you want to know if a packet was cut short
by a snapshot length, comparing the values would be the way to do that.
More work is needed to have wiretap/pcapng.c properly report the flags,
e.g. reporting no time stamp being present for a Simple Packet Block.
svn path=/trunk/; revision=41185
form of corruption/bogosity in a file, including in a file header as
well as in records in the file. Change the error message
wtap_strerror() returns for it to reflect that.
Use it for some file header problems for which it wasn't already being
used - WTAP_ERR_UNSUPPORTED shouldn't be used for that, it should only
be used for files that we have no reason to believe are invalid but that
have a version number we don't know about or some other
non-link-layer-encapsulation-type value we don't know about.
svn path=/trunk/; revision=40175
same.
Add to wiretap/pcap-common.c a routine to fill in the pseudo-header for
ATM (by looking at the VPI, VCI, and packet data, and guessing) and
Ethernet (setting the FCS length appropriately). Use it for both pcap
and pcap-ng files.
svn path=/trunk/; revision=38840
Set the pseudo-header when doing the sequential read as well as when
doing random reads.
When writing packets to a CommView file, use a slightly less contorted
way to get the year/month/day/hour/minute/second values.
commview_dump() uses the pseudo_header argument; don't mark it as
unused.
svn path=/trunk/; revision=38833
by the gunzipping code. Have it also supply a err_info string, and
report it. Have file_error() supply an err_info string.
Put "the file" - or, for WTAP_ERR_DECOMPRESS, "the compressed file", to
suggest a decompression error - into the rawshark and tshark errors,
along the lines of what other programs print.
Fix a case in the Netscaler code where we weren't fetching the error
code on a read failure.
svn path=/trunk/; revision=36748
can't be saved in compress form" are both equivalent to "this file file
format requires seeking when writing it". Change the "can compress"
Boolean in the file format table to "writing requires seeking", give all
the entries the proper value, and do the checks for attempting to write
a file format to a pipe or write it in compressed format to common code.
This means we don't need to pass the "can't seek" flag to the dump open
routines.
svn path=/trunk/; revision=36575
file_read(buf, bsize, count, file) macro is compilant with fread
function and takes elements count+ size of each element, however to make
it compilant with gzread() it always returns number of bytes.
In wiretap file_read() this is not really used, file_read is called
either with bsize set to 1 or count to 1.
Attached patch remove bsize argument from macro.
svn path=/trunk/; revision=36491
wtap_dump_file_write(). Replace various wrappers around fwrite() with
wtap_dump_file_write(), or at least make the wrappers call
wtap_dump_file_write().
svn path=/trunk/; revision=33116
provide a default case (returning an error) to prevent wiretap from asserting
out because we didn't set the packet encapsulation.
svn path=/trunk/; revision=26327
in Wireshark when reading CommView files. Also write out these values when
coming from a file format with encapsulation type 802.11 with radio.
svn path=/trunk/; revision=23617
Guy Harris