Return an struct containing error information. This simplifies
the interface to more easily provide richer diagnostics in the future.
Add an error code besides a human-readable error string to allow
checking programmatically for errors in a robust manner. Currently
there is only a generic error code, it is expected to increase
in the future.
Move error location information to the struct. Change callers and
implementation to use the new interface.
Experience has shown that:
1. The current logging methods are not very reliable or practical.
A logging bitmask makes little sense as the user-facing interface (who
would want debug but not crtical messages for example?); it's
computer-friendly and user-unfriendly. More importantly the console
log level preference is initialized too late in the startup process
to be used for the logging subsystem and that fact raises a number
of annoying and hard-to-fix usability issues.
2. Coding around G_MESSAGES_DEBUG to comply with our log level mask
and not clobber the user's settings or not create unexpected log misses
is unworkable and generally follows the principle of most surprise.
The fact that G_MESSAGES_DEBUG="all" can leak to other programs using
GLib is also annoying.
3. The non-structured GLib logging API is very opinionated and lacks
configurability beyond replacing the log handler.
4. Windows GUI has some special code to attach to a console,
but it would be nice to abstract away the rest under a single
interface.
5. Using this logger seems to be noticeably faster.
Deprecate the console log level preference and extend our API to
implement a log handler in wsutil/wslog.h to provide easy-to-use,
flexible and dependable logging during all execution phases.
Log levels have a hierarchy, from most verbose to least verbose
(debug to error). When a given level is set everything above that
is also enabled.
The log level can be set with an environment variable or a command
line option (parsed as soon as possible but still later than the
environment). The default log level is "message".
Dissector logging is not included because it is not clear what log
domain they should use. An explosion to thousands of domains is
not desirable and putting everything in a single domain is probably
too coarse and noisy. For now I think it makes sense to let them do
their own thing using g_log_default_handler() and continue using the
G_MESSAGES_DEBUG mechanism with specific domains for each individual
dissector.
In the future a mechanism may be added to selectively enable these
domains at runtime while trying to avoid the problems introduced
by G_MESSAGES_DEBUG.
The secs field is a time_t, which is not necessarily 32 bits. If it's
not, casting away the upper bits, by casting to guint32, introduces a
Y2.038K bug.
Either cast to time_t or, if you're assigning a time_t to it, don't
bother with the cast.
Remove the editor modeline blocks from the source files in ui that use 4
space indentation by running
perl -i -p0e 's{ \n+ /[ *\n]+ editor \s+ modelines .* shiftwidth= .* \*/ \s+ } {\n}gsix' $( ag -l shiftwidth=4 $( ag -g '\.(c|cpp|h|m|mm)') )
This gives us one source of indentation truth for these files, and it
*shouldn't* affect anyone since
- These files match the default in our top-level .editorconfig.
- The one notable editor that's likely to be used on these files and
*doesn't* support EditorConfig (Qt Creator) defaults to 4 space
indentation.
Do not copy addresses at when dialog opens, they will be initialized
in tapall_tcpip_packet(). Do not clear addresses when switching stream,
they will be properly removed in graph_segment_list_free().
Correctly free addresses in graph_segment_list_free() which is called
when switching stream and when closing the dialog. Free copied addresses
when switching direction (address swap).
Remove redundant and unused code.
Change-Id: I4328aa4df333f59c587f841b74a24dc71d329079
Reviewed-on: https://code.wireshark.org/review/36840
Petri-Dish: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Petri Dish Buildbot
Reviewed-by: Tomasz Moń <desowin@gmail.com>
Trivial, mostly just redundant assignments or
format specifiers.
Change-Id: Iaf33f24d2af5a48a5e1b797e582bf936914c8daa
Reviewed-on: https://code.wireshark.org/review/36154
Petri-Dish: Martin Mathieson <martin.r.mathieson@googlemail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Martin Mathieson <martin.r.mathieson@googlemail.com>
Have cf_read_current_record() take a capture_file as an argument and
read, into its wtap_rec and Buffer for the currently-selected frame,
information for the currently-selected frame.
Rename cf_read_record_r() to cf_read_record().
That gives us 1) a routine that reads the currently-selected frame into
the wtap_rec and Buffer for the currently-selected frame and 2) a
routine that reads an arbitrary frame into the wtap_rec and Buffer
supplied to it. If you *want* the currently-selected record, use the
former, otherwise use the latter.
Change-Id: If6bd5915dd5bc18334d7b89859822a19234153a4
Reviewed-on: https://code.wireshark.org/review/32858
Petri-Dish: Guy Harris <guy@alum.mit.edu>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This reverts commit 9445403f95.
cf_select_packet frees the buffer backing the dissection result
(cf->edt) which results in use-after-frees when callers try to access
the contents. See for example this call trace:
* PacketList::selectionChanged
* cf_select_packet(cap_file_, row)
* frameSelected(row) -> ByteViewTab::selectedFrameChanged
* addTab(source_name, get_data_source_tvb(source))
get_data_source_tvb returns the buffer that backs the dissection and
must remain valid even after dissection has completed. If this is not
done, then a possibly expensive redissection must be done in order to
populate the byte view. The temporary memory savings are not worth it.
Bug: 15683
Change-Id: Ia5ec2c7736cdebbac3c5bf46a4e2470c9236262d
Reviewed-on: https://code.wireshark.org/review/32758
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Most code that reads from a capture_file already has its own wtap_rec
and Buffer; change the remaining ones to do so as well.
Change-Id: I9b7c136642bbb375848c37ebe23c9cdeffe830c3
Reviewed-on: https://code.wireshark.org/review/32732
Petri-Dish: Guy Harris <guy@alum.mit.edu>
Tested-by: Petri Dish Buildbot
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This allows taps that can fail to report an error and fail; a failed
tap's packet routine won't be called again, so they don't have to keep
track of whether they've failed themselves.
We make the return value from the packet routine an enum.
Don't have a separate type for the per-packet routine for "follow" taps;
they're expected to act like tap packet routines, so just use the type
for tap packet routines.
One tap packet routine returned -1; that's not a valid return value, and
wasn't one before this change (the return value was a boolean), so
presume the intent was "don't redraw".
Another tap routine's early return, without doing any work, returned
TRUE; this is presumably an error (no work done, no need to redraw), so
presumably it should be "don't redraw".
Clean up some white space while we're at it.
Change-Id: Ia7d2b717b2cace4b13c2b886e699aa4d79cc82c8
Reviewed-on: https://code.wireshark.org/review/31283
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Move */ to a separate line below the SPDX identifier.
Change-Id: Id1032215449cfccae0933147b45e04b65e0b727f
Reviewed-on: https://code.wireshark.org/review/27211
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Separate the stuff that any record could have from the stuff that only
particular record types have; put the latter into a union, and put all
that into a wtap_rec structure.
Add some record-type checks as necessary.
Change-Id: Id6b3486858f826fce4b096c59231f463e44bfaa2
Reviewed-on: https://code.wireshark.org/review/25696
Reviewed-by: Guy Harris <guy@alum.mit.edu>
The first is deprecated, as per https://spdx.org/licenses/.
Change-Id: I8e21e1d32d09b8b94b93a2dc9fbdde5ffeba6bed
Reviewed-on: https://code.wireshark.org/review/25661
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Petri-Dish: Dario Lombardo <lomato@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Change-Id: I6b05399395bcc35e59b73b4030ba4a05711a7b1a
Reviewed-on: https://code.wireshark.org/review/25565
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Have the routines that create them take a pointer to a struct
packet_provider_data, store that in the tvbuff data, and use it to get
the wtap from which packets are being read.
While we're at it, don't include globals.h in any header files, and
include it in source files iff the source file actually uses cfile. Add
whatever includes that requires.
Change-Id: I9f1ee391f951dc427ff62c80f67aa4877a37c229
Reviewed-on: https://code.wireshark.org/review/24733
Reviewed-by: Guy Harris <guy@alum.mit.edu>
The split isn't necessary now that epan no longer uses the capture_file
structure.
Change-Id: Ia232712a2fb5db511865805518e8d03509b2167f
Reviewed-on: https://code.wireshark.org/review/24693
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Have cfile-int.h declare the structure, and use it in files that
directly access the structure.
Have cfile.h just incompletely declare the structure and include it
rather than explicitly declaring it in source files or other header
files.
Never directly refer to struct _capture_file except when typedeffing
capture_file.
Add #includes as necessary, now that cfile.h doesn't drag in a ton of
Change-Id: I7931c8039d75ff7c980b0f2a6e221f20e602a556
Reviewed-on: https://code.wireshark.org/review/24686
Reviewed-by: Guy Harris <guy@alum.mit.edu>
XXX_prime_with_YYY makes it a bit clearer than does XXX_prime_YYY that
we're not priming YYY, we're priming XXX *using* YYY.
Change-Id: I1686b8b5469bc0f0bd6db8551fb6301776a1b133
Reviewed-on: https://code.wireshark.org/review/21031
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Modifications to RTT graph:
- change x-axis to time (s) rather than sequence number
[ avoids sequence number wraparound ambiguity, plus
easier to correlate RTT changes to tcptrace graph ]
- change RTT computation to properly handle acks to GSO packets
- change RTT computation to take SACK blocks into account
Bug fixes:
- eliminate potential memory leak if some packets are unacked
- ensure RTT graph is shown if TCPGraph window is opened to it directly
Change-Id: I2bdcab97399ebde0f15c78fa19c882529a814580
Reviewed-on: https://code.wireshark.org/review/19662
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
That removes most of the uses of the frame number field in the
frame_data structure.
Change-Id: Ie22e4533e87f8360d7c0a61ca6ffb796cc233f22
Reviewed-on: https://code.wireshark.org/review/13509
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Do not try to show TCP stream graph window if it was rejected in constructor
Change-Id: I4d1401e2c356391ceb8c8e3d37a668fc2a9fc92f
Reviewed-on: https://code.wireshark.org/review/13454
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Replace CMP_ADDRESS, COPY_ADDRESS, et al with their lower-case
equivalents in the ui directory.
Change-Id: I10e95e66c8da5b880133452ebc484c53046e87ba
Reviewed-on: https://code.wireshark.org/review/11199
Reviewed-by: Michael Mann <mmann78@netscape.net>
Have dfilter_compile() take an additional gchar ** argument, pointing to
a gchar * item that, on error, gets set to point to a g_malloc()ed error
string. That removes one bit of global state from the display filter
parser, and doesn't impose a fixed limit on the error message strings.
Have fvalue_from_string() and fvalue_from_unparsed() take a gchar **
argument, pointer to a gchar * item, rather than an error-reporting
function, and set the gchar * item to point to a g_malloc()ed error
string on an error.
Allow either gchar ** argument to be null; if the argument is null, no
error message is allocated or provided.
Change-Id: Ibd36b8aaa9bf4234aa6efa1e7fb95f7037493b4c
Reviewed-on: https://code.wireshark.org/review/6608
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Add a dissector table indexed by the file type, and, for the
file-type-specific records, have the frame dissector skip the usual
pseudo-header processing, as the pseudo-header has a file-type-specific
record subtype in it, and call the dissector for that file type's
records.
Change-Id: Ibe97cf6340ffb0dabc08f355891bc346391b91f9
Reviewed-on: https://code.wireshark.org/review/1782
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Add a "record type" field to "struct wtap_pkthdr"; currently, it can be
REC_TYPE_PACKET, for a record containing a packet, or
REC_TYPE_FILE_TYPE_SPECIFIC, for records containing file-type-specific
data.
Modify code that reads packets to be able to handle non-packet records,
even if that just means ignoring them.
Rename some routines to indicate that they handle more than just
packets.
We don't yet have any libwiretap code that supplies records other than
REC_TYPE_PACKET or that supporting writing records other than
REC_TYPE_PACKET, or any code to support plugins for handling
REC_TYPE_FILE_TYPE_SPECIFIC records; this is just the first step for bug
8590.
Change-Id: Idb40b78f17c2c3aea72031bcd252abf9bc11c813
Reviewed-on: https://code.wireshark.org/review/1773
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This reverts commit c0c480d08c.
A better way to do this is to have the record type be part of struct wtap_pkthdr; that keeps the metadata for the record together and requires fewer API changes. That is in-progress.
Change-Id: Ic558f163a48e2c6d0df7f55e81a35a5e24b53bc6
Reviewed-on: https://code.wireshark.org/review/1741
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This is the first step towards implementing the mechanisms requestd in
bug 8590; currently, we don't return any records other than packet
records from libwiretap, and just ignore non-packet records in the rest
of Wireshark, but this at least gets the ball rolling.
Change-Id: I34a45b54dd361f69fdad1a758d8ca4f42d67d574
Reviewed-on: https://code.wireshark.org/review/1736
Reviewed-by: Guy Harris <guy@alum.mit.edu>
This reverts commit 1abeb277f5.
This isn't building, and looks as if it requires significant work to fix.
Change-Id: I622b1bb243e353e874883a302ab419532b7601f2
Reviewed-on: https://code.wireshark.org/review/1568
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Start of refactoring Wiretap and breaking structures down into "generally useful fields for dissection" and "capture specific". Since this in intended as a "base" for Wiretap and Filetap, the "wft" prefix is used for "common" functionality.
The "architectural" changes can be found in cfile.h, wtap.h, wtap-int.h and (new file) wftap-int.h. Most of the other (painstaking) changes were really just the result of compiling those new architecture changes.
bug:9607
Change-Id: Ife858a61760d7a8a03be073546c0e7e582cab2ae
Reviewed-on: https://code.wireshark.org/review/1485
Reviewed-by: Michael Mann <mmann78@netscape.net>
(Using sed : sed -i '/^ \* \$Id\$/,+1 d')
Fix manually some typo (in export_object_dicom.c and crc16-plain.c)
Change-Id: I4c1ae68d1c4afeace8cb195b53c715cf9e1227a8
Reviewed-on: https://code.wireshark.org/review/497
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Add get_tcp_stream_count() to the TCP dissector and modify
graph_segment_list_get() to allow matching based solely on a stream.
Use text instead of icons for the mouse click behavior buttons. Remove
their PNG resources since we aren't using them any more. Fix setting the
cursor in the graph widget.
svn path=/trunk/; revision=51989
Rename some methods. Add the ability to toggle time and sequence number
origins. Add more keyboard shortcuts. Comment out abs_secs abs_usecs in
the segment struct since it looks like we aren't using them. Make sure
we stay in the same TCP stream.
svn path=/trunk/; revision=51856
Show the time values in ms instead of s. Add a button and keyboard
shortcut to switch the connection direction. Move more code to
tap-tcp-stream.c. Update our axis labels.
svn path=/trunk/; revision=51832
Make the stream graph dialog modeless and let the user open multiple
instances. The dangling dialog behaves similar to the GTK+ version. Add
a setDissectedCaptureFile signal to MainWindow (currently unused).
Properly transform yAxis2 and simplify resetAxes while we're at it.
Other bug fixes.
svn path=/trunk/; revision=51795
GTK+: Fix what appears to be an off-by-one error in the MA period (21
segments instead of 20). Throw away our initial segment length instead
of subtracting it from the moving sum, which skews the sum.
Qt: Add the througput graph. Use bits/s for the throughput y axis. Let
the user switch between graph types. The dialog hangs when doing this. I
haven't been able to track down the cause. Remove some unused code.
Both: Tell the user that we're using a 20 segment moving average. Move
more routines to tap-tcp-stream.[ch].
svn path=/trunk/; revision=51759
Add the QCustomPlot widget. Thanks to Emanuel Eichhammer for granting a
license change. Move some common code from ui/gtk/tcp_graph.c to
ui/tap-tcp-stream.[ch]. Get rid of tcp_graph_selected_packet_enabled().
It was only used in the menu code and didn't match what we were doing
elsewhere.
Still quite a bit of work to do but it's a promising start.
svn path=/trunk/; revision=51538
João Valverde