if (and only if) the length of the item being added is 0 (so that it has
no data backing it).
This means the data stream name pointer for the item in question is
null; make sure we handle that.
Use that for some "uses the value from the matching request" fields in
the SMB Pipe protocol.
svn path=/trunk/; revision=4231
routines used for that.
Rename some named pipe functions as per the SNIA CIFS spec.
Label the "number of files moved" field of the reply to a Move SMB as
such, rather than as an unspecified "Count".
svn path=/trunk/; revision=4229
obviates the need to have a protocol tree item for "MSRPC-over-SMB", as
the setup words for it are just standard TransactNmPipe setup words
(0x26 is the TransactNmPipe function code, and the next setup word is
the FID for the pipe in question.)
Pass to the pipe dissector tvbuffs for setup-words-plus-pipe (which is
the data for the pipe protocol) and parameters-plus-data (which is the
data for the protocol running atop the pipe protocol); use the former
for the top-level protocol tree item for the pipe protocol, and the
latter for the top-level protocol tree item for the LANMAN protocol.
svn path=/trunk/; revision=4223
mailslot-based logon protocols just be regular register routines,
detected by the script that generates the "register.c" file, rather than
special stuff known to the SMB dissector.
svn path=/trunk/; revision=4222
"dissect_pipe_smb()", a tvbuff containing the setup words and the
pipe/mailslot pathname, as those are arguably the part of the packet
that contains the "mailslot protocol" and the "pipe protocol", as
opposed to the protocol running atop mailslots or pipes.
Pass a setup tvbuff to "dissect_pipe_smb()" for it to pass on to the
MSRPC-over-named-pipe dissector, and have the setup tvbuff passed to it
and "dissect_mailslot_smb()" contain *only* the setup words; don't
extract anything other than the setup words from it.
Declare "register_proto_smb_mailslot()" in "packet-smb-mailslot.h"
rather than "packet-smb.c", and declare "register_proto_smb_pipe()" in
"packet-smb-pipe.h" rather than "packet-smb.c".
Add a protocol for MSRPC-over-named-pipes.
Move the stuff to handle the FID in the setup words of
MSRPC-over-named-pipe transactions out of the SMB Transaction dissector
into the MSRPC dissector. Add a routine to "packet-smb.c", callable
from outside "packet-smb.c", to put an "smb.fid" field into the protocol
tree, and to add ", FID: XXXX" to the Info column, for use by the
MSRPC-over-named-pipe dissector; use it in the SMB dissector as well, in
all the places where we put a FID into the protocol tree.
Move the stuff to check whether the LANMAN protocol is enabled, and to
set "pinfo->current_proto" to "LANMAN" if it is, into the LANMAN
API-over-named-pipe dissector out of the named pipe protocol dissector.
If we didn't dissect a Transaction request or reply as a named pipe or
mailslot message, put any setup words, parameters, and data it has into
the protocol tree as separate items.
Don't put a "Response in" item into the protocol tree for an NT Cancel
request, as there are no responses to NT Cancel requests.
svn path=/trunk/; revision=4221
structure, so that it can be updated by subdissectors; this way the
updates affect the structure immediately, and don't get lost if the
subdissector later throws an exception.
Use "tvb_reported_length()" to check for an interim mailslot reply;
"tvb_length()" could give the wrong answer if a short snapshot length
was given in the capture.
svn path=/trunk/; revision=4218
"smb_saved_info_t". Put all the information needed to dissect NT
Transaction replies, Transaction2 replies, or Transaction replies into
separate data structures, allocated separately, and put a pointer to
that data structure in the "void *" in question.
Use the return value of "dissect_pipe_smb()" and
"dissect_mailslot_smb()" to control whether to display as data the stuff
those routines were asked to dissect.
If we've seen a request before, but its "smb_saved_info_t" isn't in the
"matched" hash table, look in the "unmatched" hash table - perhaps we
haven't seen the reply yet.
svn path=/trunk/; revision=4216
Get rid of "Response to" stuff in the LANMAN dissector, as that's now
done in the SMB dissector.
Add a routine for dissecting unknown SMBs (gets the word and byte
counts, and just adds text entries for the word and byte parameters, if
any), and replace null pointers in the dissector table with pointers to
that routine. Get rid of the check for a null dissector pointer.
svn path=/trunk/; revision=4212
formatting the string as text.
In "add_pointer_param()", make the offset in the text item for the
string the offset in the string area, not the offset of the pointer
itself.
Fix some items in item lists to have "lm_null" rather than a null
pointer, so that if we don't find an entry for the detail level, we
don't blow up dereferencing a null pointer, we just dissect all the
items based on the type in the descriptor string.
If we don't have a data descriptor for response data, just put in an
entry for the data; that may happen if we only dissected part of the
request to which the stuff we're dissecting is a reply, e.g. because the
snapshot length didn't let us capture all of the request.
svn path=/trunk/; revision=4085
aux_count_p value was NULL the program would SIGSEGV when *aux_count_p
was initially set to 0. Added NULL pointer test.
svn path=/trunk/; revision=4036
Protocol", not just the "Microsoft Windows Lanman Protocol"; LAN Manager
had a number of protocols layered atop SMB, and this is the one used for
remote execution of various APIs.
svn path=/trunk/; revision=3872
sense; instead, it's a "multiplex ID" used when there's more than one
request *currently* in flight, to distinguish replies.
This means that the MID and PID don't uniquely identify a request in
a conversation.
Therefore, we have to use some other value to distinguish between
requests with the same MID and PID.
Add a mechanism to do so.
svn path=/trunk/; revision=3829
places) dissector tvbuffified, from Ronnie Sahlberg and me.
Additional "are we past the end of the buffer" checks added, so that we
don't hand random junk to the transaction and transact2 dissectors.
svn path=/trunk/; revision=3824
that rather than passing another copy of that flag to dissectors of
particular messages.
Pass that structure to the pipe subdissector by making "pi.private"
point to it, rather than by passing it as an explicit argument.
Change more of the
if (dirn == 1) {
...
}
if (dirn == 0) {
...
}
stuff to
if (dirn == 1) {
...
} else {
...
}
and then, as per the first paragraph, check the "request" flag in the
"smb_info" structure rather than checking a "dirn" flag.
Set "last_transact2_command" to -1 in the "smb_request_val" structures
for TRANSACTION requests, as it doesn't apply to those requests.
As "dissect_transact_params()" doesn't do any work if the "TransactName"
argument is null, don't bother calling it for a reply if we don't have an
"smb_request_val" for the corresponding request, as that means we can't
find out the value to pass as the "TransactName" argument.
svn path=/trunk/; revision=3822
frame per-frame data indicating
1) what type of transaction it's a reply to
and
2) whether it's the first reply or a continuation reply
as the information supplied by the SMB dissector can only be trusted on
the first pass through the capture.
(If you have two different transactions in the *same* conversation with
the *same* MID, but different transaction types, only on the first pass
will the transaction type in the data structure pointed to by
"si.request_val" reflect the previous request - it reflects the last
request seen which, when the user is clicking on frames in the capture,
needn't be the request corresponding to the reply that they've just
clicked on.
If you have a reply that consists of multiple SMBs,
"si.request_val->trans_response_seen" will be set to 1 as soon as the
first reply is seen, and will *remain* 1 until the request is seen
again; if the user clicks on one of the SMBs in the reply, even if it's
the first SMB in the reply, without having first clicked on the request,
"si.request_val->trans_response_seen" will be 1, and the SMB will be
misdissected as a continuation.)
Use common code to handle the beginning of LANMAN replies, rather than
duplicating it in the code to handle each reply.
svn path=/trunk/; revision=3154
Use "loc_offset" even for the function code in a response (it probably
shouldn't matter, as the function code isn't actually *in* the
response), and set "loc_offset" to SMB_offset in an interim reply.
svn path=/trunk/; revision=3151
request to which it's a response.
Compute the offset of the LANMAN data before putting *any* entries into
the tree, rather than using 0 as the offset for the top-level item for a
response.
svn path=/trunk/; revision=3150
Move the declaration of routines exported from "packet-smb-mailslot.c"
into a "packet-smb-mailslot.h" header file, and have modules that import
those routines include "packet-smb-mailslot.h" rather than declaring the
routines themselves; do the same for routines exported from
"packet-smb-pipe.c". Make routines not exported static, and make
routines that return a true/false return value "gboolean" rather than
"guint32".
svn path=/trunk/; revision=3146
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
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
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
spec (which covers some of what this file dissects).
Dissect the share type in NetShareEnum replies as a type value (using
values from said spec), not just as a number.
svn path=/trunk/; revision=1958
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
Guy Harris