Commit Graph

127 Commits

Author SHA1 Message Date
Guy Harris 391b5127d6 Clean up the error reporting. An EOF from the sync pipe when capturing
is just an indication that the capture child exited; don't treat it as
an error, unless the child process exits with an abnormal status.
 
As tshark sends a "stop capture" indication to the child when it's
^C'ed, the child will exit and we'll get an EOF from the capture pipe;
don't make SIGINT etc. interrupt system calls, so they don't cause reads
from the capture pipe to get EINTR errors.

svn path=/trunk/; revision=32986
2010-05-27 00:48:08 +00:00
Stig Bjørlykke b9bf692c3e Untabify.
svn path=/trunk/; revision=32970
2010-05-26 07:19:42 +00:00
Guy Harris 5c27494bd6 Don't report EINTR - it might be from a ^C.
Do report the error string for other read errors, though.

svn path=/trunk/; revision=32969
2010-05-26 05:33:57 +00:00
Guy Harris 26bf53f0b1 Use the right system call name.
svn path=/trunk/; revision=32965
2010-05-26 02:34:12 +00:00
Guy Harris d0ac88186d If dumpcap exits abnormally, report the error.
svn path=/trunk/; revision=32964
2010-05-26 02:32:19 +00:00
Guy Harris bcba2a44e3 Fix comments.
svn path=/trunk/; revision=32885
2010-05-19 03:49:52 +00:00
Guy Harris 414399b572 Fix some errors. Use FormatMessageA(), as we need the string in ASCII.
svn path=/trunk/; revision=32857
2010-05-18 05:32:29 +00:00
Guy Harris 964383bf1c Add a routine to convert Win32 error statuses into strings, and use it
when generating error messages.

The error code from CreatePipe() is gotten by calling GetLastError();
it's not in errno.

Clean up indentation a bit.

svn path=/trunk/; revision=32855
2010-05-18 03:29:45 +00:00
Guy Harris 14c40a21aa Make -Z always generate machine-readable output, and don't bother
supplying -M along with -Z.  (We keep -M around for debugging use; it's
documented, unlike -Z.)

svn path=/trunk/; revision=32850
2010-05-17 23:56:00 +00:00
Guy Harris 03d408abcb Update a comment.
svn path=/trunk/; revision=32844
2010-05-17 18:41:48 +00:00
Guy Harris 991c5e9898 When dumpcap is run to get an interface list, interface capabilities, or
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
2010-05-17 18:40:23 +00:00
Guy Harris 1c18115bd3 Fetch an indication of whether the interface supports capturing in
monitor mode at the same time that we fetch its list of link-layer
types.  Support fetching that list in monitor mode, as the list may be
different in regular and monitor mode.  If the interface supports
monitor mode, when printing the list of link-layer types, indicate
whether they're fetched in monitor mode or not, as tcpdump 4.1.x does.

svn path=/trunk/; revision=32789
2010-05-13 17:37:39 +00:00
Guy Harris 6ace737ae4 Add monitor mode support to TShark.
svn path=/trunk/; revision=32704
2010-05-07 01:46:38 +00:00
Guy Harris 7dbbb8c572 Just check for pcap_create(); it first appeared in libpcap 1.0.0, and
pcap_set_buffer_size() did as well, so there aren't any libpcap releases
with pcap_create() but not pcap_set_buffer_size().

Only do one check for pcap_create.

svn path=/trunk/; revision=32695
2010-05-06 23:33:41 +00:00
Anders Broman f9981411f1 Checking in Stigs changes from
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=475
BUT not activating the check for 
pcap_create()
pcap_set_buffer_size()
This should make it possible to build with support for setting the buffersize if not capturing 802.11 traffic.

The code for handling the 'B' option should be OK in any case.

svn path=/trunk/; revision=32688
2010-05-06 18:34:30 +00:00
Guy Harris 167ab3a98c In Wireshark and TShark, run dumpcap to get interface lists and lists of
link-layer header types for interfaces; if special privileges are
necessary to open capture devices, Wireshark and TShark shouldn't have
those privileges, but dumpcap should.

svn path=/trunk/; revision=32104
2010-03-04 01:12:04 +00:00
Guy Harris 0bd0d5939a Fix a typo.
svn path=/trunk/; revision=32080
2010-03-02 00:39:41 +00:00
Bill Meier e4d6610bd5 Fix various gcc -Wshadow warnings.
svn path=/trunk/; revision=31729
2010-01-29 16:09:25 +00:00
Jeff Morriss af6fca176d Don't use SIGUSR1 to tell dumpcap to exit, use SIGINT: SIGINT is traditionally
used for this purpose and using it also prevents the 2 signals the child gets:
	- the user's Ctrl-C (which is sent as a SIGINT to both *shark and its
	  child dumpcap)
	- the signal *shark generates to shut down the child

from colliding (and running 2 signal handlers in the child).

It might be possible for tshark to not send the signal at all when it gets
SIGINT, but it doesn't do any harm now.

Also, do not call g_log() within the signal handler: doing so can cause
aborts (if g_log is being called by the process when the signal comes, the
2nd entrance into g_log is detected as a recursion).

This fixes https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2767

svn path=/trunk/; revision=29881
2009-09-13 17:46:10 +00:00
Stig Bjørlykke a61e285004 Added a preference to capture in Pcap-NG from GUI.
svn path=/trunk/; revision=28740
2009-06-15 16:36:02 +00:00
Guy Harris 44f8cae6ab If we don't have any of the pcap_datalink_XXX_to_YYY routines,
substitute our own (I wrote them all, so I can steal them from the
BSD-licensed libpcap if I want :-)).  This means that
linktype_name_to_val() and linktype_val_to_name() are always available,
and we don't need to #ifdef use of them.

Use pcap_datalink_val_to_description() to get the description for a
particular DLT_ value, rather than mapping the DLT_ value to a
WTAP_ENCAP_ value and getting the description for the latter.

svn path=/trunk/; revision=27074
2008-12-21 23:22:12 +00:00
Stig Bjørlykke 32d411be1d Do not set buffer size for remote interfaces or when using default value.
Do not get link-layer for remote interfaces.

svn path=/trunk/; revision=26683
2008-11-03 21:38:53 +00:00
Guy Harris e8ba2515de The packet counts and drop counts reported by libpcap are unsigned.
Clean up indentation a bit.

svn path=/trunk/; revision=26037
2008-08-19 05:10:16 +00:00
Jeff Morriss 83f9ecf96f Move privileges.c and unicode-utils.c from epan to wsutil (so things like
capinfos and dumpcap don't need to depend on libwireshark nor directly pull
in those modules).  Because capinfos and editcap were only being linked with
privileges.c if we had plugins, this allows those programs to be linked when
someone is compiling --without-plugins.

svn path=/trunk/; revision=25640
2008-06-30 17:16:29 +00:00
Guy Harris 3d2c418ba7 Rename an argument to avoid colliding with pipe().
svn path=/trunk/; revision=25556
2008-06-23 21:27:37 +00:00
Jeff Morriss a5cee04fad Move the file utility functions from wiretap to libwsutil so that
libwireshark (and the plugins using those functions) do not depend on
wiretap on Windows.

While doing that, rename the eth_* functions to ws_*.

svn path=/trunk/; revision=25354
2008-05-22 15:46:27 +00:00
Guy Harris a12bdc612a Use report_failure() to report failures in capture_sync.c; that will do
the right thing in Wireshark and TShark, as both of them call
epan_init() to set the appropriate "report an error" function.

That obviates the need to have TShark have its own private version of
simple_dialog().

Have cmdarg_err() just call failure_message() instead of duplicating the
code in failure_message().

svn path=/trunk/; revision=25201
2008-04-30 07:58:57 +00:00
Bill Meier e4f89044bd Emit warning message to log if attempt to send signal to child process fails...
svn path=/trunk/; revision=24707
2008-03-21 02:27:58 +00:00
Bill Meier 2c07da3195 Fix for handling dumpcap errmsgs when wireshark does 'dumpcap -D -M', etc
svn path=/trunk/; revision=24507
2008-02-29 18:48:29 +00:00
Bill Meier 8d4f01eea7 Ensure tshark/wireshark always get good err msgs from dumpcap:
1. Clean up dumpcap 'as a child' err msg handling so that:
   - all err msgs are properly formatted when being sent 
     back to the parent.
   - any log Critical, Warning, etc messages
     are sent back to parent and are properly formatted.
2. Change handling of -w <...> slightly in capture_opts.c
   so that wireshark provides a good error message if
   there is a 'write permissions' issue on the file.
   (Previously the error popup said only 
   "Child exited with status 2").
   This fixes bug #2288.

Add some conditionalized DEBUG_CHILD_DUMPCAP code for
   dumpcap debug logging to a file.

svn path=/trunk/; revision=24446
2008-02-23 19:59:38 +00:00
Guy Harris b7c2ead26a Constify some arguments.
svn path=/trunk/; revision=24407
2008-02-21 12:30:26 +00:00
Guy Harris 0146bbda09 Exit with 1, not 2, if exec fails, so we don't report an additional
error for the exit status, over and above the one for the exec failure.

svn path=/trunk/; revision=24041
2008-01-09 11:50:22 +00:00
Guy Harris 0a6424f732 Use dup2() rather than eth_close() followed by dup() to ensure that a
given file descriptor get duped to another descriptor.

Handle exec errors in sync_pipe_open_command() the same way they're
handled in sync_pipe_start(); that fixes bug 2177.

svn path=/trunk/; revision=24040
2008-01-09 11:40:38 +00:00
Tomas Kukosa 08bbd29c71 Support for RPCAP features in GUI (from Boris Misenov, see Bug 1366)
- retrieving the list of remote PCAP interfaces
  - password authentication support
  - UDP data fransfer
  - packet sampling (available in WinPcap 4.x)
  etc.

fix problem if non-default rpcap port is used

svn path=/trunk/; revision=23750
2007-12-04 11:19:29 +00:00
Gerald Combs e8fd375630 Fixes from Sam Leffler:
In capture_sync.c: Don't clobber the DLT value.

  In packet-cops.c (modified by me): Instead of adding an item as a static,
  mis-cast FT_UINT16 to the tree, add it as an FT_NONE.

  In packet-802.11.c: Add the right address to the tree.

svn path=/trunk/; revision=23624
2007-11-27 19:57:35 +00:00
Gerald Combs 060834df82 If a child doesn't quit 500ms after sending a QUIT signal, force it to exit.
svn path=/trunk/; revision=23591
2007-11-25 21:33:34 +00:00
Gerald Combs 1b76321135 Fix a log message.
svn path=/trunk/; revision=23518
2007-11-20 20:25:07 +00:00
Gerald Combs 8f05294027 For the Wireshark/TShark -> dumpcap signal pipe on Windows, use a named
pipe instead of stdin.  Add an argument (currently the parent PID) back
to the "-Z" flag and use it to construct the pipe name.  This lets us
pass the parent's stdin handle to dumpcap, which lets us capture from
stdin on Windows.  Add a comment about checking for the parent process.

In capture_loop.c, remove the wait_forever argument from cap_pipe_select()
since it was always FALSE.  Set the timeout under Windows to 250 ms
instead of 250000 ms.

svn path=/trunk/; revision=23279
2007-10-26 16:32:28 +00:00
Gerald Combs 300503cdcb Fix a typo.
svn path=/trunk/; revision=23272
2007-10-25 20:37:12 +00:00
Guy Harris e8ea45d6ed Make the sync pipe the standard error, not the standard output, of
dumpcap, when using it as a capture child; leave the standard output
alone, in case tshark was told to write the capture to the standard
error.

Get rid of the argument to the "-Z" option to dumpcap; it might not work
on Windows.

svn path=/trunk/; revision=23124
2007-10-10 01:31:36 +00:00
Guy Harris 322d44d416 Make the "-Z" argument to dumpcap take an argument that's the file
descriptor to use as the sync pipe.  For now, always pass 1, so the sync
pipe is the standard output of dumpcap.

svn path=/trunk/; revision=23025
2007-09-29 01:36:03 +00:00
Guy Harris 343fa12c82 The fork_child argument to sync_interface_stats_close is unused on UN*X.
svn path=/trunk/; revision=23023
2007-09-29 01:14:16 +00:00
Gerald Combs 89a2966ced Add a "-S" flag to dumpcap, which prints out interface statistics. Use
this in the GUI rather than calling pcap_stats() directly. This gets rid
of the last pcap_open_live() call in the GUI code. Update
README.packaging.

svn path=/trunk/; revision=22443
2007-08-02 21:45:27 +00:00
Gerald Combs fa67b9959c Fix Windows Buildbot breakage. Remove an unneeded function and fix a
couple of memory leaks.

svn path=/trunk/; revision=22368
2007-07-21 00:31:55 +00:00
Gerald Combs c02e0c7b4a Remove the "-I" flag from dumpcap, and add a "-M" flag used to specify
that "-D" and "-L" should produce machine-readable output.  Use this to
move an indirect get_pcap_linktype() call from the GUI to dumpcap.

svn path=/trunk/; revision=22367
2007-07-20 21:43:07 +00:00
Gerald Combs e9f1a0b692 One more step in privilege separation.
Add a capture_interface_list(), which works similar to
get_interface_list() except that it forks dumpcap instead of calling
the pcap routines directly.  Use it in the GUI.

Add a "-I" flag to dumpcap, which prints out verbose interface
information.

Tested under Windows and Linux.

svn path=/trunk/; revision=22071
2007-06-11 03:58:58 +00:00
Stephen Fisher 8fd3ee0560 Remove almost all of the casts I committed recently and in place of
them, add -Wno-pointer-sign to CFLAGS when gcc will accept it.


svn path=/trunk/; revision=21253
2007-03-28 21:55:11 +00:00
Stephen Fisher 2896811274 Fix about 150 warnings new to gcc 4.0 in the error on warning directories.
Comment out -Werror in plugins/asn1/ until warnings can be fixed.


svn path=/trunk/; revision=21158
2007-03-23 22:49:23 +00:00
Stephen Fisher cdf47e536b Add -Werror when using GCC only to the Makefile.am of the base
directory and most of the plugins to match the same command 
put in the Makefile.nmake files for Windows compliations.  Fix
a few warnings when compiling under gcc 3.4.4 on FreeBSD.  Create
new automake file variable called USING_GCC in configure.in and
wiretap/configure.in to acomplish the above -Werror addition. 


svn path=/trunk/; revision=21127
2007-03-22 23:03:39 +00:00
Ulf Lamping a04b0fa6d9 use unicode-utils.h instead of strutil.h
svn path=/trunk/; revision=19301
2006-09-23 00:38:56 +00:00