Distinguish log messages from SP_ERROR_MSG; log messages don't
necessarily represent a failure, and they have a level. This
doesn't affect logging while capturing much, as SP_ERROR_MSGs
are just printed to the console, but it makes it possible to log
while retrieving interface information or the stats, where SP_ERROR_MSG
indicates that the command failed.
Allow dumpcap to have the "-D" "-L" and "-S" flags all specified.
This is a "welcome mode" that prints out the interfaces and their
capabilities, and then prints out the running statistics.
("-L" and "-S" without "-D" will just print the statistics, but
doesn't give an error.)
In capture child mode, the interface information is sent as a
message on the sync pipe before the success message; the statistics
are sent on the data pipe as usual.
Actually using this in Wireshark will be added next.
Related to #15082
On at least some Linux distributions, dumpcap is either installed with
elevated privileges sufficient to support traffic capture by default or
can optionally be given those privileges. If it has those privileges,
it's typically made group-executable but not world-executable and owned
by a special group, e.g. "wireshark", so that only users in that group
can use dumpcap to capture traffic.
The user installing the Wireshark package is *not* necessarily put into
that group by default; this means that any attempt by Wireshark or
TShark to run dumpcap will fail with EACCES.
If the exec call in the child process sends text error mesages, intended
for end users, up the message pipe, as we had been doing, then figuring
out *why* the exec failed would require some heuristic parsing to figure
out whether it's a permissions problem or not.
Instead of doing that, just send a message giving the errno for exec
failing.
For now, we just format an error message for that in the parent process,
but this leaves room to do a better job.
While we're at it, fix some cases where an empty error message could be
printed.
Give them all names beginning with sync_pipe_write_
Rename pipe_write_block() to sync_pipe_write_string_msg(), as it writes
a message containing a string, not a "block".
Add sync_pipe_write_uint_msg(), which takes an unsigned integer as an
argument and writes a message containing its value (as a string) as the
body.
Make sync_pipe_write_header() and SP_DECISIZE local to
sync_pipe_write.c, as they're no longer used outside that file.
Currently used to define ssize_t on platforms that lack it.
Fix some Windows build errors caused by moving the definition into a
separate header.
Fix some narrowing warnings on Windows x64 from changing the definition
of ssize_t from long int to int64_t.
The casts in dumpcap are ugly but necessary. The whole code needs
to be rewritten for portability, or the warnings disabled.
Change all wireshark.org URLs to use https.
Fix some broken links while we're at it.
Change-Id: I161bf8eeca43b8027605acea666032da86f5ea1c
Reviewed-on: https://code.wireshark.org/review/34089
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>
A while back Graham pointed out the SPDX project (spdx.org), which is
working on standardizing license specifications:
https://www.wireshark.org/lists/wireshark-dev/201509/msg00119.html
Appendix V of the specification describes a short identifier
(SPDX-License-Identifier) that you can use in place of boilerplate in
your source files:
https://spdx.org/spdx-specification-21-web-version#h.twlc0ztnng3b
Start the conversion process with our top-level C and C++ files.
Change-Id: Iba1d835776714deb6285e2181e8ca17f95221878
Reviewed-on: https://code.wireshark.org/review/24302
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Reviewed-by: Balint Reczey <balint@balintreczey.hu>
Tested-by: Petri Dish Buildbot
Reviewed-by: Michael Mann <mmann78@netscape.net>
An extcap utility can provide configuration for controls to use in a
GUI interface toolbar. This controls are bidirectional and can be
used to control the extcap utility while capturing.
This is useful in scenarios where configuration can be done based on
findings in the capture process, setting temporary values or give other
inputs without restarting current capture.
Todo:
- Add support for Windows
Change-Id: Ie15fa67f92eb27d8b73df6bb36f66b9a7d81932d
Reviewed-on: https://code.wireshark.org/review/19982
Petri-Dish: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>
This didn't fix the test failures.
This reverts commit e5f4c5c8a8.
Change-Id: I0cff5eff88d2b49806797cef83338dbbace42a4c
Reviewed-on: https://code.wireshark.org/review/15135
Reviewed-by: Gerald Combs <gerald@wireshark.org>
As the MSDN documentation says, "CreateProcess returns without waiting
for the new process to finish its initialization." Add an SP_INIT sync
pipe indicator on Windows and use it in dumpcap to signal to its parent
that it has started up.
Change-Id: I88a4c158871dbe2dd6eba13434e92c5d4b1c2e4b
Reviewed-on: https://code.wireshark.org/review/15132
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Change-Id: If7a6f2697be732ae4f94ed8b845fd293c32510f7
Also: tabs-stops should be 8
Reviewed-on: https://code.wireshark.org/review/7100
Reviewed-by: Bill Meier <wmeier@newsguy.com>
... to ensure that there are no potential issues with respect to
editors limiting the number of lines scanned at the end of the file
when checking for editor modelines.
Change-Id: Ic85cbb108bb5159d6ec4116fea11f5eebb4e44a4
Reviewed-on: https://code.wireshark.org/review/4688
Reviewed-by: Bill Meier <wmeier@newsguy.com>
(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>
Cast away some implicit 64-bit-to-32-bit conversion errors due to use of
sizeof.
Cast away some implicit 64-bit-to-32-bit conversion errors due to use of
strtol() and strtoul().
Change some data types to avoid those implicit conversion warnings.
When assigning a constant to a float, make sure the constant isn't a
double, by appending "f" to the constant.
Constify a bunch of variables, parameters, and return values to
eliminate warnings due to strings being given const qualifiers. Cast
away those warnings in some cases where an API we don't control forces
us to do so.
Enable a bunch of additional warnings by default. Note why at least
some of the other warnings aren't enabled.
randpkt.c and text2pcap.c are used to build programs, so they don't need
to be in EXTRA_DIST.
If the user specifies --enable-warnings-as-errors, add -Werror *even if
the user specified --enable-extra-gcc-flags; assume they know what
they're doing and are willing to have the compile fail due to the extra
GCC warnings being treated as errors.
svn path=/trunk/; revision=46748
interface statistics, have its error messages come out as sync-pipe
errors, have it send a sync-pipe "success" message on success, and have
the callers get that message and display it.
svn path=/trunk/; revision=32843
by dumpcap and Ethereal (so that, on UN*X, the child process can report
a detailed "can't exec dumpcap" error).
Rename most of the "sync_pipe_XXX_to_parent()" routines, as they're also
in Tethereal, which doesn't have a sync pipe.
svn path=/trunk/; revision=17789
John Thacker