that the only options that contain *no* length byte are the IP and TCP
EOL and NOP options so that we can treat unknown options as
VARIABLE_LENGTH with a minimum of 2, and at least be able to move on to
the next option by using the length in the option, rather than just
reporting the unknown option and processing no options after it.
svn path=/trunk/; revision=604
of option code, one octet of length (which includes the two option code
and length bytes), followed by 0 or more octets of option data, with
some options being fixed-length and some being variable-length. Put
some stuff from the PPP control protocol option parsing code into the
IP-and-TCP option parsing code, and use the latter instead of the
former.
(That code might also be usable for CDP as well, with some stuff added
to it.)
Shuffle the arguments to "dissect_ip_tcp_options()" to resemble those of
various other dissectors (i.e., with the "proto_tree *" at the end).
Add in code to dissect a pile of PPP options documented in various RFCs.
svn path=/trunk/; revision=601
bunch of source files.
Replace the "payload" field of a "packet_info" structure with "len" and
"captured_len" fields, which contain the total packet length and total
captured packet length (including all headers) at the current protocol
layer (i.e., if a given layer has a length field, and that length field
says its shorter than the length we got from the capture, reduce the
"pi.len" and "pi.captured_len" values appropriately). Those fields can
be used in the future if we add checks to make sure a field we're
extracting from a packet doesn't go past the end of the packet, or past
the captured part of the packet.
Get rid of the additional payload argument to some dissection functions;
use "pi.captured_len - offset" instead.
Have the END_OF_FRAME macro use "pi.captured_len" rather than
"fd->cap_len", so that "dissect the rest of the frame" becomes "dissect
the rest of the packet", and doesn't dissect end-of-frame padding such
as padding added to make an Ethernet frame 60 or more octets long. (We
might want to rename it END_OF_PACKET; if we ever want to label the
end-of-frame padding for the benefit of people curious what that extra
gunk is, we could have a separate END_OF_FRAME macro that uses
"fd->cap_len".)
svn path=/trunk/; revision=506
string pointer from the result of ip_to_str (statically allocated string).
Use the ip_src and the new field ip_dst in follow.c to build a correct
string display filter.
svn path=/trunk/; revision=408
suggestion, this new method using a static array should use less memory
and be faster. It also has a nice side-effect of making the source-code
more readble, IMHO.
Changed the print routines to look for protocol proto_data instead of
looking at the text label as they did before, hoping that the data hex
dump field item starts with "Data (".
Added the -G keyword to ethereal to make it dump a glossary of display
filter keywords to stdout and exit. This data is then formatted with
the doc/dfilter2pod perl program to pod format, which is combined
with doc/ethereal.pod.template to create doc/ethereal.pod, from which
the ethereal manpage is created. This way we can keep the manpage up-to-date
with a list of fields that can be filtered on.
svn path=/trunk/; revision=364
new proto_tree routines. I also removed the check for lex and yacc from
wiretap's configure script. The IP dissector now uses
proto_register_field_array().
svn path=/trunk/; revision=348
mechanism that is built into ethereal. Wiretap is now used to read all
file formats. Libpcap is used only for capturing.
svn path=/trunk/; revision=342
were printing values in hex. The lack of "0x" in fron of the hex numbers
made me think the values were decimal, causing me to waste a bit of time
during debugging.
svn path=/trunk/; revision=323
proto*() functions. The configure script tries to use ipv6 name resolution if
it knows the type of ipv6 stack the user has (this can be avoided with the
--disable-ipv6 switch) Additionally, the configure script now deals with wiretap
better. If the user doesn't want to compile wiretap, the wiretap is never
visited. A few unnecessary #includes were removed from some wiretap files, and
a CPP macro was moved from bpf.c to wtap.h.
svn path=/trunk/; revision=229
reference the protocol tree with struct proto_tree and struct proto_item
objects. That way, the packet decoding source code file can be used with
non-gtk packet decoders, like a curses-based ethereal, e.g. I also re-arranged
some of the information in packet.h to more appropriate places (like other
packet-*.[ch] files).
svn path=/trunk/; revision=223
they're not used outside this file.
Compute their sizes with the standard "number of elements in an array" C
idiom, rather than hardcoding them as numbers.
Add the "information request" and "information reply" ICMP packet types.
svn path=/trunk/; revision=212
of variable as a bit field container. ANSI specs only allow unsigned ints
to host bit fields; IBM's C compiler is very ANSI-strict.
svn path=/trunk/; revision=183
because it is still in its infancy, but it can be compiled in optionally.
The library exists in its own subdirectory ethereal/wiretap. This patch also
edits all the packet-*.c files to remove the #include <pcap.h> line which is
unnecessary in these files. In the ethereal code, file.c is the most heavily
modified with #ifdef WITH_WIRETAP lines for the optional library.
svn path=/trunk/; revision=82
1455.
Make the arguments to "val_to_str()" and "match_strval()" that
point to things those routines don't modify pointers to "const",
and make the "value_string" tables passed into those routines in
"packet-ip.c" "const".
svn path=/trunk/; revision=72
it returns NULL, formats the value with the format passed in as
an argument, and returns a pointer to that static buffer.
Change several "match_strval()" calls to use "val_to_str()".
In "dissect_ospf()", use "match_strval()" to look up the packet
type, and use "Unknown" if it doesn't find a match.
svn path=/trunk/; revision=66
* Hacks to the filter interface (Gerald)
* About box (Laurent)
* AppleTalk support (Simon)
* Mods to the match_strval routine (Gerald)
svn path=/trunk/; revision=61
1883, it should, perhaps with some additions, be able to handle IPv6
options as well).
Make the IPv4 and TCP dissectors use it.
Fix a typo in the IP dissector ("Unknon" for "Unknown").
Show the IP and TCP header lengths as byte counts rather than
4-byte-word counts.
Show the protocol field value of an IP header as a name if it's a
protocol we know about.
List the acknowledgment and urgent pointer values in a TCP header only
if the corresponding flag is set.
Make the ETT_ values members of an enum, so that the compiler
automatically assigns them sequential integer values (at least if said
compiler conforms to the ANSI C standard).
svn path=/trunk/; revision=45
generalizes the column printing code, adds a "frame" tree item to
the tree view, and fixes a bunch of miscellaneous coding bugs.
svn path=/trunk/; revision=31
Guy Harris