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the following:
It is now possible to enable/disable a particular protocol decoding
(i.e. the protocol dissector is void or not). When a protocol
is disabled, it is displayed as Data and of course, all linked
sub-protocols are disabled as well.
Disabling a protocol could be interesting:
- in case of buggy dissectors
- in case of wrong heuristics
- for performance reasons
- to decode the data as another protocol (TODO)
Currently (if I am not wrong), all dissectors but NFS can be disabled
(and dissectors that do not register protocols :-)
I do not like the way the RPC sub-dissectors are disabled (in the
sub-dissectors) since this could be done in the RPC dissector itself,
knowing the sub-protocol hfinfo entry (this is why, I've not modified
the NFS one yet).
Two functions are added in proto.c :
gboolean proto_is_protocol_enabled(int n);
void proto_set_decoding(int n, gboolean enabled);
and two MACROs which can be used in dissectors:
OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree)
CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree)
See also the XXX in proto_dlg.c and proto.c around the new functions.
svn path=/trunk/; revision=2267
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dissectors to be registered as dissectors for particular ports,
registered as heuristic dissectors, and registered as dissectors for
conversations, and have routines to be used both by old-style and
new-style dissectors to call registered dissectors.
Have the code that calls those dissectors translate the arguments as
necessary. (For conversation dissectors, replace
"find_conversation_dissector()", which just returns a pointer to the
dissector, with "old_try_conversation_dissector()" and
"try_conversation_dissector()", which actually call the dissector, so
that there's a single place at which we can do that translation. Also
make "dissector_lookup()" static and, instead of calling it and, if it
returns a non-null pointer, calling that dissector, just use
"old_dissector_try_port()" or "dissector_try_port()", for the same
reason.)
This allows some dissectors that took old-style arguments and
immediately translated them to new-style arguments to just take
new-style arguments; make them do so. It also allows some new-style
dissectors not to have to translate arguments before calling routines to
look up and call dissectors; make them not do so.
Get rid of checks for too-short frames in new-style dissectors - the
tvbuff code does those checks for you.
Give the routines to register old-style dissectors, and to call
dissectors from old-style dissectors, names beginning with "old_", with
the routines for new-style dissectors not having the "old_". Update the
dissectors that use those routines appropriately.
Rename "dissect_data()" to "old_dissect_data()", and
"dissect_data_tvb()" to "dissect_data()".
svn path=/trunk/; revision=2218
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a particular type, rather than taking a varargs list, along the lines of
the "proto_tree_add_XXX_format()" routines.
Replace most calls to "proto_tree_add_item()" and
"proto_tree_add_item_hidden()" with calls to those routines.
Rename "proto_tree_add_item()" and "proto_tree_add_item_hidden()" to
"proto_tree_add_item_old()" and "proto_tree_add_item_hidden_old()", and
add new "proto_tree_add_item()" and "proto_tree_add_item_hidden()"
routines that don't take the item to be added as an argument - instead,
they fetch the argument from the packet whose tvbuff was handed to them,
from the offset handed to them.
svn path=/trunk/; revision=2031
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number, and have the protocols encapsulated inside IPX register
themselves with that table.
svn path=/trunk/; revision=2028
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Add exceptions routines.
Convert proto_tree_add_*() routines to require tvbuff_t* argument.
Convert all dissectors to pass NULL argument ("NullTVB" macro == NULL) as
the tvbuff_t* argument to proto_tree_add_*() routines.
dissect_packet() creates a tvbuff_t, wraps the next dissect call in
a TRY block, will print "Short Frame" on the proto_tree if a BoundsError
exception is caught.
The FDDI dissector is converted to use tvbuff's.
svn path=/trunk/; revision=1939
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This change allows you to add a new packet-*.c file and not cause a
recompilation of everything that #include's packet.h
Add the plugin_api.[ch] files ot the plugins/Makefile.am packaging list.
Add #define YY_NO_UNPUT 1 to the lex source so that the yyunput symbol
is not defined, squelching a compiler complaint when compiling the generated
C file.
svn path=/trunk/; revision=1637
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forwarding e-mail address.
svn path=/trunk/; revision=1522
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of the frame, plus at most one offset from the beginning of the frame,
to make it clearer what the offset is.
Then use that offset in at least some places to do bounds checking.
If a packet has no payload, don't hand it to the SMB dissector.
svn path=/trunk/; revision=1165
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dynamically-assigned "ett_" integer values, assigned by
"proto_register_subtree_array()"; this:
obviates the need to update "packet.h" whenever you add a new
subtree type - you only have to add a call to
"proto_register_subtree_array()" to a "register" routine and an
array of pointers to "ett_", if they're not already there, and
add a pointer to the new "ett_" variable to the array, if they
are there;
would allow run-time-loaded dissectors to allocate subtree types
when they're loaded.
svn path=/trunk/; revision=1043
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(NWLink), are sufficiently different that they should be handled in
different routines.
Change the decode to match NetMon a bit more.
svn path=/trunk/; revision=631
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according to what NetMon thinks the bits are).
svn path=/trunk/; revision=629
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That makes the space of name types even more sparse; use "val_to_str()"
to decode them, rather than an indexed table.
Make a "process_netbios_name()" routine that shows non-printable
characters in NetBIOS names as <XX>, where "XX" is the value of the
character in hex (the way Network Monitor does), and have
"get_netbios_name()" use it (NetBIOS-over-TCP will be made to use it in
the future).
When displaying NetBIOS names, include the name type character at the
end, in angle brackets, the way Network Monitor does (show it in hex
even if it *is* printable - 0x20 is 0x20, not "space", in that context).
svn path=/trunk/; revision=628
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in the IPX header, and have the dissectors it calls use it rather than
being passed the length as an argument.
Treat both packet type 20 ("WAN Broadcast") and 4 ("IPX", although 3 is
also "IPX", according to Network Monitor) as potentially being NetBIOS
packets.
The packet types for the IPX NetBIOS socket (0x0455) and the NWLink
sockets (0x0551 and 0x0553) are different (perhaps because there's one
socket for the 0x0455 NBIPX, so you have to do name service and datagram
service and have the packet types distinguish them, but NWLink has
separate sockets for name service and datagram service).
The packet type for name service and for datagram service are at
*different locations* in the packet, which is unfortunate if you want to
use the packet type to distinguish name service and datagram service
packets. Use the packet length, for now, to distinguish them, with
socket 0x0455.
Dissect datagram packets differently from name service packets.
Export "packet-netbios.c"'s "netbios_add_name()" routine, and use it
when dissecting NBIPX packets as well.
Label NBIPX packets as "NBIPX" rather than "NetBIOS".
svn path=/trunk/; revision=627
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NetBIOS Datagram Service in NBTland; a capture Gilbert sent had a pile
of those packets containing what looked like SMB browser announcements,
which are sent out as broadcast datagrams. Label them as such, and
treat them as such.
Might packet type 2 be the equivalent of the NetBIOS Session Service -
both of them contain SMBs, but the former is a connection-oriented
service (LLC I frames, presumably, in NBF, and TCP in NBT), and the
latter is a datagram-oriented service (LLC UI frames, presumably, in
NBF, and UDP in NBT)? For now, we leave type 2 as "SMB (over NBIPX)",
but we might want to label it as "NetBIOS session" or whatever the
appropriate term is.
svn path=/trunk/; revision=574
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allowing users to filter on the existence of these protocols. I also
added packet-clip.c to the Nmake makefile.
svn path=/trunk/; revision=402
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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
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svn path=/trunk/; revision=262
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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
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* Added check_col(), add_col_str() and add_col_fmt() to replace references
to ft->win_info.
* Added column prefs handling code.
svn path=/trunk/; revision=97
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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
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Netware, and NetBIOS over IPX for WinNT (NWLink).
svn path=/trunk/; revision=53
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call it under fewer circumstances.
svn path=/trunk/; revision=52
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that these are two very different implementations of NetBIOS name services and
at the protocol level are not similar. I have put the UDP protocol in
packet-nbns.c, since it will be a very big module. I have all of rfc 1002 to
read and implement. I am planning on putting many different NetBIOS over IPX
functions in packet-nbipx.c, however, since there is no RFC or published
standard. I have to hack the protocol, and as such, I do not expect it to be
as full-featured as the IP-world equivalents.
svn path=/trunk/; revision=50
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