given IP address if:
the MAC address is non-unicast, not just if it's broadcast;
the MAC address is all zeroes;
the IP address is all zeroes.
*Do* tell the resolver code that the target MAC address corresponds to
the target IP address in ARP replies, as long as none of the above are
true - replies are the packets most likely to contain interesting target
address information.
svn path=/trunk/; revision=7116
addresses and the protocol type, as supplied by BPF; on Linux, they *do*
have an offset field, as supplied by PF_PACKET sockets. Add a new
WTAP_ENCAP_ARCNET_LINUX, with packets that include the offset field, and
don't dissect an offset in WTAP_ENCAP_ARCNET packets.
Map a libpcap link-layer type of 129 to WTAP_ENCAP_ARCNET_LINUX; that
value was recently assigned to Linux-style ARCNET.
Add some more ARCNET protocol IDs.
For most protocol IDs, dissect an ATA 878.2 fragmentation header; don't
do it for RFC 1051 IP and ARP, and Diagnose packets. Set the length of
the ARCNET protocol tree item appropriately.
Dissect both the RFC 1051 and RFC 1201 styles of IP and ARP over ARCNET,
and dissect the RFC 1201 style of RARP as well.
svn path=/trunk/; revision=6981
equivalents for the toplevel directory. The removal of winsock2.h will
hopefully not cause any problems under MSVC++, as those files using
struct timeval still include wtap.h, which still includes winsock2.h.
svn path=/trunk/; revision=5932
contain the interesting "XXX is at YYY" data; put that into the Info
column. Thanks to Andreas Sikkema for catching this.
svn path=/trunk/; revision=4906
as FT_ETHER fields, not FT_BYTES fields.
Don't treat Experimental Ethernet addresses as being Ethernet addresses
(they were 8 bytes long, not 48 bytes long).
Put ARP protocol addresses that are IPv4 addresses into the protocol
tree as FT_IPv4 fields, not FT_BYTES fields.
Fix the checks for MAC hardware addresses and IPv4 protocol addresses,
done to see if we should say a given Ethernet address has the same name
as a given IP address, to check both the type and length.
svn path=/trunk/; revision=4716
"epan/..." pathnames, so as to avoid collisions with header files in any
of the directories in which we look (e.g., "proto.h", as some other
package has its own "proto.h" file which it installs in the top-level
include directory).
Don't add "-I" flags to search "epan", as that's no longer necessary
(and we want includes of "epan" headers to fail if the "epan/" is left
out, so that we don't re-introduce includes lacking "epan/").
svn path=/trunk/; revision=4586
structure to the "packet_info" structure; only stuff that's permanently
stored with each frame should be in the "frame_data" structure, and the
"column_info" structure is not guaranteed to hold the column values for
that frame at all times - it was only in the "frame_data" structure so
that it could be passed to dissectors, and, as all dissectors are now
passed a pointer to a "packet_info" structure, it could just as well be
put in the "packet_info" structure.
That saves memory, by shrinking the "frame_data" structure (there's one
of those per frame), and also lets us clean up the code a bit.
svn path=/trunk/; revision=4370
take a dissector handle as an argument, rather than a pointer to a
dissector function and a protocol ID. Associate dissector handles with
dissector table entries.
svn path=/trunk/; revision=4308
than a pointer to a dissector function, as an argument.
This means that the conversation dissector is called through
"call_dissector()", so the dissector itself doesn't have to worry about
checking whether the protocol is enabled or setting
"pinfo->current_proto", so get rid of the code that does that in
conversation dissectors. Also, make the conversation dissectors static.
Get rid of some direct calls to dissectors; replace them with calls
through handles, and, again, get rid of code to check whether a protocol
is enabled and set "pinfo->current_proto" where that code isn't needed.
Make those dissectors static if they aren't already static.
Add a routine "create_dissector_handle()" to create a dissector handle
without registering it by name, if the dissector isn't used outside the
module in which it's defined.
svn path=/trunk/; revision=4281
"{old_}heur_dissector_add()", "{old_}conv_dissector_add()", and
"register_dissector()", so that an entry in those tables has associated
with it the protocol index of the protocol the dissector handles (or -1,
if there is no protocol index for it).
This is for future use in a number of places.
(Arguably, "proto_register_protocol()" should take a dissector pointer
as an argument, but
1) it'd have to handle both regular and heuristic dissectors;
2) making it take either a "dissector_t" or a union of that and
a "heur_dissector_t" introduces some painful header-file
interdependencies
so I'm punting on that for now. As with other Ethereal internal APIs,
these APIs are subject to change in the future, at least until Ethereal
1.0 comes out....)
svn path=/trunk/; revision=2849
protocols, in addition to adding structures to the list of filterable
fields. Give it an extra argument that specifies a "short name" for the
protocol, for use in such places as
pinfo->current_proto;
the dialog box for constructing filters;
the preferences tab for the protocol;
and so on (although we're not yet using it in all those places).
Make the preference name that appears in the preferences file and the
command line for the DIAMETER protocol "diameter", not "Diameter"; the
convention is that the name in question be all-lower-case.
Make some routines and variables that aren't exported static.
Update a comment in the ICP dissector to make it clear that the
dissector won't see fragments other than the first fragment of a
fragmented datagram.
svn path=/trunk/; revision=2810
or "[Malformed Frame]" to the Info column.
Make some dissectors set the Protocol column and clear the Info column
before fetching anything from the tvbuff they were handed, so that if
the frame is short or malformed, it'll be marked as being the right
top-level protocol, and the Info column won't have cruft left over from
the previous protocol.
svn path=/trunk/; revision=2800
can be put, and a pointer to the string for the column, which might or
might not point to that buffer.
Add a routine "col_set_str()", which sets the string for the column to
the string passed to it as an argument; it should only be handed a
static string (a string constant would be ideal). It doesn't do any
copying, so it's faster than "col_add_str()".
Make the routines that append to columns check whether the pointer to
the string for the column points to the buffer for the column and, if
not, copy the string for the column to the buffer for the column so that
you can append to it (so you can use "col_set_str()" and then use
"col_append_str()" or "col_append_fstr()").
Convert a bunch of "col_add_str()" calls that take a string constant as
an argument to "col_set_str()" calls.
Convert some "col_add_fstr()" calls that take a string constant as the
only argument - i.e., the format string doesn't have any "%" slots into
which to put strings for subsequent arguments to "col_set_str()" calls
(those calls are just like "col_add_str()" calls).
Replace an END_OF_FRAME reference in a tvbuffified dissector with a
"tvb_length(tvb)" call.
svn path=/trunk/; revision=2670
string formatter, like "format_text()", and, as "tvbuff.c" now calls it
(*vide infra*), we don't want to have to make "tvbuff.c" drag "packet.h"
in just to declare "bytes_to_str()". It's now declared in "strutil.h",
so include it in modules that use "bytes_to_str()" and weren't already
including it.
Add a "tvb_bytes_to_str()" wrapper that calls "tvb_get_ptr()" to get a
pointer to a chunk of N bytes at a given offset in a tvbuff and then
hands that chunk to "bytes_to_str()". Convert the code that was doing
that to use "tvb_bytes_to_str()" instead (which caught what I suspect is
a bug in the Q.2931 dissector, where it was handing an offset of 0 to
"tvb_get_ptr()" - a cut-and-pasteo, I think).
Tvbuffify the ARP dissector.
svn path=/trunk/; revision=2634
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
name can be added from file reading but also from the dissectors.
- add is_dummy_entry in the hosts hashtable.
- check in add_xxx that the entry is not already there, if so
do nothing except if this is a dummy entry (in this case, it is
simply replaced).
- add found boolean parameter to host_name_lookup[6]
- add the add_ether_byip procedure which adds a new ether entry
knowing the IP address (if the IP address can be resolved).
- and finally call this new procedure from ARP dissector.
(ipxnets (among other things) to be updated).
svn path=/trunk/; revision=2248
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
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
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
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
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
put it into a subroutine in "packet-arp.c", and call it from
"packet-q2931.c".
Add a "packet-arp.h" header to hold declarations of routines exported by
"packet-atm.c" (other than the ATM dissector itself), moving them out of
"packet.h".
Use the aforementioned NSAP dissector to display ATM addresses in NSAP
format, and display E.164 addresses as ASCII text (under the assumption
that they're presented as a string of IA5, i.e. ASCII, characters, just
as they are in Q.931).
svn path=/trunk/; revision=1124
requests, as described in RFC 2225; they do *not* have the same format
as regular ARP requests, so dissect them differently.
Inverse ARP is also used on ATM, so add the Inverse ARP request and
reply message types. (It's also used with other protocols, e.g. Frame
Relay.)
Handle zero-length addresses (meaning the address is absent).
They can have up to 6 different address fields, so make "bytes_to_str()"
have six static buffers in which it can return strings.
svn path=/trunk/; revision=1123
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
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
prints the protocol tree, and summary prints the fields in the summary
clist, with a header line at the beginning of the printout.
Print only packets selected by the current packet filter.
Just have "ARP" and "RARP" in the "Protocol" field for ARP packets;
whether it's a request or a reply can be seen in the "Info" field.
Add to the "Frame" section of the protocol tree the time between the
current packet and the previous displayed packet, and the packet number.
Have FT_RELATIVE_TIME fields be a "struct timeval", and display them as
seconds and fractional seconds (we didn't have any fields of that type,
and that type of time fits the delta time above).
Add an FT_DOUBLE field type (although we don't yet have anything using
it).
svn path=/trunk/; revision=666
FT_NONE, so the first argument in the variable-length portion of the
argument list to the "proto_tree_add_item()" or
"proto_tree_add_item_format()" call to add the top-level protocol tree
item for a protocol has to be a null pointer.
svn path=/trunk/; revision=405
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
can be used by dissectors other than ARP to display byte arrays as
strings of hex digits.
Add a routine to extract a null-terminated Unicode string and turn it
into an ISO 8859-1 string for display. (Ultimately, we should determine
what character sets the X server or printer or whatever can handle, and
turn it into the appropriate character set.)
Display the challenge in "core-to-LANMAN-2.1" Negotiate Protocol
responses as a string of hex digits - but only if the length is
non-zero. (It's a counted array, not a null-terminated string.)
Display some additional security mode bits in an NT LM 0.12 Negotiate
Protocol response.
Display some additional bits in the "capabilities" field of the
Negotiate Protocol response.
Display the challenge in an NT LM 0.12 Negotiate Protocol response as a
string of hex digits (it's a counted array, not a null-terminated
string).
Display the domain name as Unicode in an NT LM 0.12 Negotiate Protocol
response if the capabilities field has the "supports Unicode" bit set
(no, not the "Unicode" bit in the "flags2" field - NT doesn't set that
in the response, even though it sends the domain name over in Unicode!).
Display some additional bits in the "flags2" field of an SMB.
svn path=/trunk/; revision=275
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
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
Guy Harris