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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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- implement the TCP follow feature for TCP over IPv6
svn path=/trunk/; revision=2258
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Santeri Paavolainen.
svn path=/trunk/; revision=2230
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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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special case for it. dissect_ah() is registered with the "ip.proto"
handoff table, and dissect_ah() calls the next dissector using this
same "ip.proto" handoff table.
The old dissect_ah() is kept as dissect_ah_old() since dissect_ipv6()
still uses it. I need to convert some more functions before I can
get rid of dissect_ah_old().
svn path=/trunk/; revision=2039
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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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rather than hex.
svn path=/trunk/; revision=1997
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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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dissector.
Don't dissect the payload of any fragmented IPv6 packet unless it's the
initial fragment (that's what we do for IPv4).
svn path=/trunk/; revision=1882
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protocols that run inside IPv4 register themselves with it using
"dissector_add()".
Make various dissectors static if they can be, and get rid of any header
files that no longer contain any information as a result of that change.
svn path=/trunk/; revision=1870
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for protocols that run inside PPP register themselves with it using
"dissector_add()".
svn path=/trunk/; revision=1869
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sub-dissector table is not stored in the header_field_info struct, but
in a separate namespace. Dissector tables are now registered by name
and not by field ID. For example:
udp_dissector_table = register_dissector_table("udp.port");
Because of this different namespace, dissector tables can have names
that are not field names. This is useful for ethertype, since multiple
fields are "ethertypes".
packet-ethertype.c replaces ethertype.c (the name was changed so that it
would be named in the same fashion as all the filenames passed to make-reg-dotc)
Although it registers no protocol or field, it registers one dissector table:
ethertype_dissector_table = register_dissector_table("ethertype");
All protocols that can be called because of an ethertype field now register
that fact with dissector_add() calls.
In this way, one dissector_table services all ethertype fields
(hf_eth_type, hf_llc_type, hf_null_etype, hf_vlan_etype)
Furthermore, the code allows for names of protocols to exist in the
etype_vals, yet a dissector for that protocol doesn't exist. The name
of the dissector is printed in COL_INFO. You're welcome, Richard. :-)
svn path=/trunk/; revision=1848
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svn path=/trunk/; revision=1734
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cross-checking, and by replacing "proto_tree_add_item_format()" by
multiple routines to add items of various types.
Make the arguments of "proto_tree_add_bytes_format()" and
"proto_tree_add_string_format()" that specify the bytes or the string be
"const" pointers, so that one can pass a "const" pointer without
complaints from the compiler.
Squelch a (bogus, but the compiler isn't in a position to know that)
complaint about an uninitialized variable.
svn path=/trunk/; revision=1716
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proto_tree_add_protocol_format()
proto_tree_add_uint_format()
proto_tree_add_ipxnet_format()
proto_tree_add_ipv4_format()
proto_tree_add_ipv6_format()
proto_tree_add_bytes_format()
proto_tree_add_string_format()
proto_tree_add_ether_format()
proto_tree_add_time_format()
proto_tree_add_double_format()
proto_tree_add_boolean_format()
If using GCC 2.x, we can check the print-format against the variable args
passed in. Regardless of compiler, we can now check at run-time that the
field type passed into the function corresponds to what that function
expects (FT_UINT, FT_BOOLEAN, etc.)
Note that proto_tree_add_protocol_format() does not require a value field,
since the value of a protocol is always NULL. It's more intuitive w/o the
vestigial argument.
Fixed a proto_tree_add_item_format-related bug in packet-isis-hello.c
Fixed a variable usage bug in packet-v120.c. (ett_* was used instead of hf_*)
Checked in Guy's fix for the function declearation for proto_tree_add_text()
and proto_tree_add_notext().
svn path=/trunk/; revision=1713
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svn path=/trunk/; revision=1696
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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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to a type requiring 2-byte or better alignment and was then
dereferenced; doing that requires that the code generated by your
compiler not trap if it makes an unaligned reference, and on most RISC
processors the code generated by the compiler *will* trap on an
unaligned reference by default.
svn path=/trunk/; revision=1480
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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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structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst"
addresses, where an address is an address type, an address length in
bytes, and a pointer to that many bytes.
"dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}"
are the network-layer source/destination; "{src,dst}" are the
source/destination from the highest of those two layers that we have in
the packet.
Add a port type to "packet_info" as well, specifying whether it's a TCP
or UDP port.
Don't set the address and port columns in the dissector functions; just
set the address and port members of the "packet_info" structure. Set
the columns in "fill_in_columns()"; this means that if we're showing
COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate
the string from "src" or "dst", we don't generate a string for the
link-layer address and then overwrite it with a string for the
network-layer address (generating those strings costs CPU).
Add support for "conversations", where a "conversation" is (at present)
a source and destination address and a source and destination port. (In
the future, we may support "conversations" above the transport layer,
e.g. a TFTP conversation, where the first packet goes from the client to
the TFTP server port, but the reply comes back from a different port,
and all subsequent packets go between the client address/port and the
server address/new port, or an NFS conversation, which might include
lock manager, status monitor, and mount packets, as well as NFS
packets.)
Currently, all we support is a call that takes the source and
destination address/port pairs, looks them up in a hash table, and:
if nothing is found, creates a new entry in the hash table, and
assigns it a unique 32-bit conversation ID, and returns that
conversation ID;
if an entry is found, returns its conversation ID.
Use that in the SMB and AFS code to keep track of individual SMB or AFS
conversations. We need to match up requests and replies, as, for
certain replies, the operation code for the request to which it's a
reply doesn't show up in the reply - you have to find the request with a
matching transaction ID. Transaction IDs are per-conversation, so the
hash table for requests should include a conversation ID and transaction
ID as the key.
This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses
transparently (and should allow the SMB decoder to handle NetBIOS atop
other protocols as well, if the source and destination address and port
values in the "packet_info" structure are set appropriately).
In the "Follow TCP Connection" code, check to make sure that the
addresses are IPv4 addressses; ultimately, that code should be changed
to use the conversation code instead, which will let it handle IPv6
transparently.
svn path=/trunk/; revision=909
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svn path=/trunk/; revision=842
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svn path=/trunk/; revision=838
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possible.
ipv6.nxt == 17
ipv6.dst == ff02::9
ipv6.src[0:2] == fe:80
modify dfilter lexical rule to allow standard IPv6 expression to be
passed up to parser.
XXX backward compat issue in lex rule, maybe
XXX IPv6 has chained headers. how will dfilter behave when we have
multiple protocol header of the same type?
XXX ipv6.nxt is not really useful due to IPv6 chained header. we need a
symbol to identify "final" protocol type on the chain (testing ipv6.final
but will SEGV).
svn path=/trunk/; revision=836
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for converting IPv[46] numeric notation to/from binary form.
recent BIND includes those functions so fallback is not necessary on
most of the platforms.
sorry if it raises any portability problem on other platforms.
remove partial inclusion of inet_ntop() in packet-ipv6.c.
move ip6_to_str() to packet.c, it fits better there than packet-ipv6.c.
svn path=/trunk/; revision=829
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for ip.ip_p and ip6.ip6_nxt (and other IPv6 header chain).
use val_to_str() as much as possible in dissect_{ipv6,pim,ripng}().
make --disable-zlib a default for netbsd (temporary workaround).
svn path=/trunk/; revision=827
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well.
Add some more protocols to the list of value/string pairs for IP
protocol types.
svn path=/trunk/; revision=822
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svn path=/trunk/; revision=819
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and RIPng decoding.
svn path=/trunk/; revision=818
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the base for numbers to be displayed in, bitmasks for bitfields, and blurbs
(which are one or two sentences describing the field).
proto_tree_add*() routines now automatically handle bitfields. You tell
it which header field you are adding, and just pass it the value of the
entire field, and the proto_tree routines will do the masking and shifting
for you.
This means that bitfields are more naturally filtered via dfilter now.
Added Phil Techau's support for signed integers in dfilters/proto_tree.
Added the beginning of the SNA dissector. It's not complete, but I'm
committing it now because it has example after example of how to use
bitfields with the new header_field_info struct and proto_tree routines.
It was the impetus to change how header_field_info works.
svn path=/trunk/; revision=815
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there is still some work to do in resolv.c (get_host_ipaddr6)
- add display filters of this kind in packet-ipv6.c just
for testing (display filtering is incomplete)
svn path=/trunk/; revision=808
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svn path=/trunk/; revision=565
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FreeBSD.
svn path=/trunk/; revision=423
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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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but does not link. Perhaps someone who understands the MS tools can help
out. I made it link a few months ago, but with different version of glib/gtk+.
I can't remember how I made it link.
Most of the compatibility issues were resolved with adding
#ifdef HAVE_UNISTD_H the the source code. Please be sure to add this to all
future code.
svn path=/trunk/; revision=359
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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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per RFC2460. Thanks to Jun-ichiro for the patch.
svn path=/trunk/; revision=245
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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
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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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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
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svn path=/trunk/; revision=7
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svn path=/trunk/; revision=2
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