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/* tethereal.c
*
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* $ Id : tethereal . c , v 1.209 2003 / 12 / 09 22 : 22 : 52 ulfl Exp $
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*
* Ethereal - Network traffic analyzer
Enable "Match Selected" only if there's a field selected *and* we can do
a "Match Selected" on it - we can't do a "Match Selected" if the field
has no value (e.g., FT_NULL) and has a length of 0.
If we unselect the current packet, we don't have a protocol tree, so we
don't have a currently selected field - clear the "Match Selected" menu
item and the display in the status line of information about the
currently selected field.
Move the low-level statusbar manipulation into "gtk/main.c", in routines
whose API doesn't expose anything GTK+-ish.
"close_cap_file()" calls one of those routines to clear out the status
bar, so it doesn't need to take a pointer to the statusbar widget as an
argument.
"clear_tree_and_hex_views()" is purely a display-manipulating routine;
move it to "gtk/proto_draw.c".
Extract from "tree_view_unselect_row_cb()" an "unselect_field()" routine
to do all the work that needs to be done if the currently selected
protocol tree row is unselected, and call it if the currently selected
packet list row is unselected (if it's unselected, there *is* no
protocol tree, so no row can be selected), as well as from
"tree_view_unselect_row_cb()".
Before pushing a new field-description message onto the statusbar, pop
the old one off.
Get rid of an unused variable (set, but not used).
svn path=/trunk/; revision=3513
2001-06-05 07:39:31 +00:00
* By Gerald Combs < gerald @ ethereal . com >
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* Copyright 1998 Gerald Combs
*
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* Text - mode variant , by Gilbert Ramirez < gram @ alumni . rice . edu >
* and Guy Harris < guy @ alum . mit . edu > .
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*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version 2
* of the License , or ( at your option ) any later version .
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*
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* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
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*
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* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 59 Temple Place - Suite 330 , Boston , MA 02111 - 1307 , USA .
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include <stdlib.h>
# include <stdio.h>
# include <string.h>
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# include <ctype.h>
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# include <locale.h>
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# include <limits.h>
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# ifdef HAVE_UNISTD_H
# include <unistd.h>
# endif
# include <errno.h>
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# ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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# endif
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# include <signal.h>
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# ifdef HAVE_LIBPCAP
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# include <pcap.h>
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
# include <setjmp.h>
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# endif
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# ifdef HAVE_SYS_STAT_H
# include <sys / stat.h>
# endif
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# ifdef NEED_SNPRINTF_H
# include "snprintf.h"
# endif
# ifdef NEED_STRERROR_H
# include "strerror.h"
# endif
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# ifdef NEED_GETOPT_H
# include "getopt.h"
# endif
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# include <glib.h>
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# include <epan/epan.h>
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# include <epan/filesystem.h>
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# include "globals.h"
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# include <epan/timestamp.h>
# include <epan/packet.h>
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# include "file.h"
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# include "disabled_protos.h"
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# include "prefs.h"
# include "column.h"
# include "print.h"
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# include <epan/resolv.h>
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# include "util.h"
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# ifdef HAVE_LIBPCAP
# include "pcap-util.h"
# endif
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# include <epan/conversation.h>
# include <epan/plugins.h>
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# include "register.h"
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# include "conditions.h"
# include "capture_stop_conditions.h"
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# include "ringbuffer.h"
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# include <epan/epan_dissect.h>
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# include "tap.h"
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# ifdef HAVE_LIBPCAP
# include <wiretap/wtap-capture.h>
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# include <wiretap/libpcap.h>
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# endif
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# ifdef _WIN32
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# include "capture-wpcap.h"
# endif
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/*
* This is the template for the decode as option ; it is shared between the
* various functions that output the usage for this parameter .
*/
static const gchar decode_as_arg_template [ ] = " <layer_type>==<selector>,<decode_as_protocol> " ;
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static guint32 firstsec , firstusec ;
static guint32 prevsec , prevusec ;
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static GString * comp_info_str , * runtime_info_str ;
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static gboolean quiet ;
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static gboolean decode ;
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static gboolean verbose ;
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static gboolean print_hex ;
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static gboolean line_buffered ;
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static guint32 cul_bytes = 0 ;
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static int print_format ;
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# ifdef HAVE_LIBPCAP
typedef struct _loop_data {
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
gboolean go ; /* TRUE as long as we're supposed to keep capturing */
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gint linktype ;
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gboolean from_pipe ; /* TRUE if we are capturing data from a pipe */
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pcap_t * pch ;
wtap_dumper * pdh ;
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
jmp_buf stopenv ;
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gboolean output_to_pipe ;
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int packet_count ;
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# ifndef _WIN32
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gboolean modified ; /* TRUE if data in the pipe uses modified pcap headers */
gboolean byte_swapped ; /* TRUE if data in the pipe is byte swapped */
unsigned int bytes_to_read , bytes_read ; /* Used by pipe_dispatch */
enum {
STATE_EXPECT_REC_HDR , STATE_READ_REC_HDR ,
STATE_EXPECT_DATA , STATE_READ_DATA
} pipe_state ;
enum { PIPOK , PIPEOF , PIPERR , PIPNEXIST } pipe_err ;
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# endif
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} loop_data ;
static loop_data ld ;
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static int capture ( int ) ;
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static void capture_pcap_cb ( guchar * , const struct pcap_pkthdr * ,
const guchar * ) ;
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static void report_counts ( void ) ;
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# ifdef _WIN32
static BOOL WINAPI capture_cleanup ( DWORD ) ;
# else /* _WIN32 */
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static void capture_cleanup ( int ) ;
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# ifdef SIGINFO
static void report_counts_siginfo ( int ) ;
# endif /* SIGINFO */
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# endif /* _WIN32 */
# endif /* HAVE_LIBPCAP */
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typedef struct {
capture_file * cf ;
wtap_dumper * pdh ;
} cb_args_t ;
static int load_cap_file ( capture_file * , int ) ;
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static void wtap_dispatch_cb_write ( guchar * , const struct wtap_pkthdr * , long ,
union wtap_pseudo_header * , const guchar * ) ;
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static void show_capture_file_io_error ( const char * , int , gboolean ) ;
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static void wtap_dispatch_cb_print ( guchar * , const struct wtap_pkthdr * , long ,
union wtap_pseudo_header * , const guchar * ) ;
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# ifdef HAVE_LIBPCAP
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# ifndef _WIN32
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static void adjust_header ( loop_data * , struct pcap_hdr * , struct pcaprec_hdr * ) ;
static int pipe_open_live ( char * , struct pcap_hdr * , loop_data * , char * , int ) ;
static int pipe_dispatch ( int , loop_data * , struct pcap_hdr * , \
struct pcaprec_modified_hdr * , guchar * , char * , int ) ;
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# endif /* _WIN32 */
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# endif
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capture_file cfile ;
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ts_type timestamp_type = RELATIVE ;
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# ifdef HAVE_LIBPCAP
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typedef struct {
int snaplen ; /* Maximum captured packet length */
int promisc_mode ; /* Capture in promiscuous mode */
int autostop_count ; /* Maximum packet count */
gboolean has_autostop_duration ; /* TRUE if maximum capture duration
is specified */
gint32 autostop_duration ; /* Maximum capture duration */
gboolean has_autostop_filesize ; /* TRUE if maximum capture file size
is specified */
gint32 autostop_filesize ; /* Maximum capture file size */
gboolean ringbuffer_on ; /* TRUE if ring buffer in use */
guint32 ringbuffer_num_files ; /* Number of ring buffer files */
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gboolean has_ring_duration ; /* TRUE if ring duration specified */
gint32 ringbuffer_duration ; /* Switch file after n seconds */
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int linktype ; /* Data link type to use, or -1 for
" use default " */
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} capture_options ;
static capture_options capture_opts = {
WTAP_MAX_PACKET_SIZE , /* snapshot length - default is
infinite , in effect */
TRUE , /* promiscuous mode is the default */
0 , /* max packet count - default is 0,
meaning infinite */
FALSE , /* maximum capture duration not
specified by default */
0 , /* maximum capture duration */
FALSE , /* maximum capture file size not
specified by default */
0 , /* maximum capture file size */
FALSE , /* ring buffer off by default */
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RINGBUFFER_MIN_NUM_FILES , /* default number of ring buffer
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files */
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FALSE , /* Switch ring file after some */
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0 , /* specified time is off by default */
- 1 /* Default to not change link type */
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} ;
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static gboolean list_link_layer_types ;
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# ifdef SIGINFO
static gboolean infodelay ; /* if TRUE, don't print capture info in SIGINFO handler */
static gboolean infoprint ; /* if TRUE, print capture info after clearing infodelay */
# endif /* SIGINFO */
# endif /* HAVE_LIBPCAP */
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static void
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print_usage ( gboolean print_ver )
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{
int i ;
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if ( print_ver ) {
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fprintf ( stderr , " This is GNU t%s %s \n %s \n %s \n " , PACKAGE , VERSION ,
comp_info_str - > str , runtime_info_str - > str ) ;
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}
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# ifdef HAVE_LIBPCAP
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fprintf ( stderr , " \n t%s [ -vh ] [ -DlLnpqSVx ] [ -a <capture autostop condition> ] ... \n " ,
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PACKAGE ) ;
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fprintf ( stderr , " \t [ -b <number of ring buffer files>[:<duration>] ] [ -c <count> ] \n " ) ;
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fprintf ( stderr , " \t [ -d %s ] ... \n " , decode_as_arg_template ) ;
fprintf ( stderr , " \t [ -f <capture filter> ] [ -F <output file type> ] [ -i <interface> ] \n " ) ;
fprintf ( stderr , " \t [ -N <resolving> ] [ -o <preference setting> ] ... [ -r <infile> ] \n " ) ;
fprintf ( stderr , " \t [ -R <read filter> ] [ -s <snaplen> ] [ -t <time stamp format> ] \n " ) ;
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fprintf ( stderr , " \t [ -T pdml|ps|text ] [ -w <savefile> ] [ -y <link type> ] \n " ) ;
fprintf ( stderr , " \t [ -z <statistics string> ] \n " ) ;
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# else
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fprintf ( stderr , " \n t%s [ -vh ] [ -lnVx ] \n " , PACKAGE ) ;
fprintf ( stderr , " \t [ -d %s ] ... \n " , decode_as_arg_template ) ;
fprintf ( stderr , " \t [ -F <output file type> ] [ -N <resolving> ] \n " ) ;
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fprintf ( stderr , " \t [ -o <preference setting> ] ... [ -r <infile> ] [ -R <read filter> ] \n " ) ;
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fprintf ( stderr , " \t [ -t <time stamp format> ] [ -T pdml|ps|text ] [ -w <savefile> ] \n " ) ;
fprintf ( stderr , " \t [ -z <statistics string> ] \n " ) ;
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# endif
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fprintf ( stderr , " Valid file type arguments to the \" -F \" flag: \n " ) ;
for ( i = 0 ; i < WTAP_NUM_FILE_TYPES ; i + + ) {
if ( wtap_dump_can_open ( i ) )
fprintf ( stderr , " \t %s - %s \n " ,
wtap_file_type_short_string ( i ) , wtap_file_type_string ( i ) ) ;
}
fprintf ( stderr , " \t default is libpcap \n " ) ;
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}
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# ifdef HAVE_LIBPCAP
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static int
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get_natural_int ( const char * string , const char * name )
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{
long number ;
char * p ;
number = strtol ( string , & p , 10 ) ;
if ( p = = string | | * p ! = ' \0 ' ) {
fprintf ( stderr , " tethereal: The specified %s \" %s \" is not a decimal number \n " ,
name , string ) ;
exit ( 1 ) ;
}
if ( number < 0 ) {
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fprintf ( stderr , " tethereal: The specified %s is a negative number \n " ,
name ) ;
exit ( 1 ) ;
}
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if ( number > INT_MAX ) {
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fprintf ( stderr , " tethereal: The specified %s is too large (greater than %d) \n " ,
name , INT_MAX ) ;
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exit ( 1 ) ;
}
return number ;
}
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static int
get_positive_int ( const char * string , const char * name )
{
long number ;
number = get_natural_int ( string , name ) ;
if ( number = = 0 ) {
fprintf ( stderr , " tethereal: The specified %s is zero \n " ,
name ) ;
exit ( 1 ) ;
}
return number ;
}
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/*
* Given a string of the form " <autostop criterion>:<value> " , as might appear
* as an argument to a " -a " option , parse it and set the criterion in
* question . Return an indication of whether it succeeded or failed
* in some fashion .
*/
static gboolean
set_autostop_criterion ( const char * autostoparg )
{
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guchar * p , * colonp ;
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colonp = strchr ( autostoparg , ' : ' ) ;
if ( colonp = = NULL )
return FALSE ;
p = colonp ;
* p + + = ' \0 ' ;
/*
* Skip over any white space ( there probably won ' t be any , but
* as we allow it in the preferences file , we might as well
* allow it here ) .
*/
while ( isspace ( * p ) )
p + + ;
if ( * p = = ' \0 ' ) {
/*
* Put the colon back , so if our caller uses , in an
* error message , the string they passed us , the message
* looks correct .
*/
* colonp = ' : ' ;
return FALSE ;
}
if ( strcmp ( autostoparg , " duration " ) = = 0 ) {
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capture_opts . has_autostop_duration = TRUE ;
capture_opts . autostop_duration = get_positive_int ( p , " autostop duration " ) ;
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} else if ( strcmp ( autostoparg , " filesize " ) = = 0 ) {
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capture_opts . has_autostop_filesize = TRUE ;
capture_opts . autostop_filesize = get_positive_int ( p , " autostop filesize " ) ;
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} else {
return FALSE ;
}
* colonp = ' : ' ; /* put the colon back */
return TRUE ;
}
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/*
* Given a string of the form " <ring buffer file>:<duration> " , as might appear
* as an argument to a " -b " option , parse it and set the arguments in
* question . Return an indication of whether it succeeded or failed
* in some fashion .
*/
static gboolean
get_ring_arguments ( const char * arg )
{
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guchar * p = NULL , * colonp ;
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colonp = strchr ( arg , ' : ' ) ;
if ( colonp ! = NULL ) {
p = colonp ;
* p + + = ' \0 ' ;
}
capture_opts . ringbuffer_num_files =
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get_natural_int ( arg , " number of ring buffer files " ) ;
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if ( colonp = = NULL )
return TRUE ;
/*
* Skip over any white space ( there probably won ' t be any , but
* as we allow it in the preferences file , we might as well
* allow it here ) .
*/
while ( isspace ( * p ) )
p + + ;
if ( * p = = ' \0 ' ) {
/*
* Put the colon back , so if our caller uses , in an
* error message , the string they passed us , the message
* looks correct .
*/
* colonp = ' : ' ;
return FALSE ;
}
capture_opts . has_ring_duration = TRUE ;
capture_opts . ringbuffer_duration = get_positive_int ( p ,
" ring buffer duration " ) ;
* colonp = ' : ' ; /* put the colon back */
return TRUE ;
}
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# endif
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/* structure to keep track of what tap listeners have been registered.
*/
typedef struct _ethereal_tap_list {
struct _ethereal_tap_list * next ;
char * cmd ;
void ( * func ) ( char * arg ) ;
} ethereal_tap_list ;
static ethereal_tap_list * tap_list = NULL ;
void
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register_ethereal_tap ( char * cmd , void ( * func ) ( char * arg ) )
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{
ethereal_tap_list * newtl ;
newtl = malloc ( sizeof ( ethereal_tap_list ) ) ;
newtl - > next = tap_list ;
tap_list = newtl ;
newtl - > cmd = cmd ;
newtl - > func = func ;
}
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/*
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* For a dissector table , print on the stream described by output ,
* its short name ( which is what ' s used in the " -d " option ) and its
* descriptive name .
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*/
static void
2003-06-30 00:58:18 +00:00
display_dissector_table_names ( char * table_name , char * ui_name , gpointer output )
2003-06-05 04:47:58 +00:00
{
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fprintf ( ( FILE * ) output , " \t %s (%s) \n " , table_name , ui_name ) ;
2003-06-05 04:47:58 +00:00
}
/*
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* For a dissector handle , print on the stream described by output ,
* the filter name ( which is what ' s used in the " -d " option ) and the full
* name for the protocol that corresponds to this handle .
2003-06-05 04:47:58 +00:00
*/
static void
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display_dissector_names ( gchar * table _U_ , gpointer handle , gpointer output )
2003-06-05 04:47:58 +00:00
{
int proto_id ;
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const gchar * proto_filter_name ;
const gchar * proto_ui_name ;
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proto_id = dissector_handle_get_protocol_index ( ( dissector_handle_t ) handle ) ;
2003-06-30 00:58:18 +00:00
if ( proto_id ! = - 1 ) {
proto_filter_name = proto_get_protocol_filter_name ( proto_id ) ;
proto_ui_name = proto_get_protocol_name ( proto_id ) ;
g_assert ( proto_filter_name ! = NULL ) ;
g_assert ( proto_ui_name ! = NULL ) ;
fprintf ( ( FILE * ) output , " \t %s (%s) \n " ,
proto_filter_name ,
proto_ui_name ) ;
}
2003-06-05 04:47:58 +00:00
}
/*
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* The protocol_name_search structure is used by find_protocol_name_func ( )
2003-06-05 04:47:58 +00:00
* to pass parameters and store results
*/
struct protocol_name_search {
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gchar * searched_name ; /* Protocol filter name we are looking for */
2003-06-05 04:47:58 +00:00
dissector_handle_t matched_handle ; /* Handle for a dissector whose protocol has the specified filter name */
guint nb_match ; /* How many dissectors matched searched_name */
} ;
typedef struct protocol_name_search * protocol_name_search_t ;
/*
* This function parses all dissectors associated with a table to find the
* one whose protocol has the specified filter name . It is called
* as a reference function in a call to dissector_table_foreach_handle .
* The name we are looking for , as well as the results , are stored in the
* protocol_name_search struct pointed to by user_data .
* If called using dissector_table_foreach_handle , we actually parse the
2003-06-30 00:58:18 +00:00
* whole list of dissectors .
2003-06-05 04:47:58 +00:00
*/
static void
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find_protocol_name_func ( gchar * table _U_ , gpointer handle , gpointer user_data )
2003-06-05 04:47:58 +00:00
2003-06-30 00:58:18 +00:00
{
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int proto_id ;
const gchar * protocol_filter_name ;
protocol_name_search_t search_info ;
g_assert ( handle ) ;
search_info = ( protocol_name_search_t ) user_data ;
proto_id = dissector_handle_get_protocol_index ( ( dissector_handle_t ) handle ) ;
2003-06-30 00:58:18 +00:00
if ( proto_id ! = - 1 ) {
protocol_filter_name = proto_get_protocol_filter_name ( proto_id ) ;
g_assert ( protocol_filter_name ! = NULL ) ;
if ( strcmp ( protocol_filter_name , search_info - > searched_name ) = = 0 ) {
/* Found a match */
if ( search_info - > nb_match = = 0 ) {
/* Record this handle only if this is the first match */
search_info - > matched_handle = ( dissector_handle_t ) handle ; /* Record the handle for this matching dissector */
}
search_info - > nb_match + + ;
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}
}
}
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/*
* Print all layer type names supported .
* We send the output to the stream described by the handle output .
*/
static void
fprint_all_layer_types ( FILE * output )
{
dissector_all_tables_foreach_table ( display_dissector_table_names , ( gpointer ) output ) ;
}
/*
* Print all protocol names supported for a specific layer type .
* table_name contains the layer type name in which the search is performed .
* We send the output to the stream described by the handle output .
*/
static void
fprint_all_protocols_for_layer_types ( FILE * output , gchar * table_name )
{
dissector_table_foreach_handle ( table_name ,
display_dissector_names ,
( gpointer ) output ) ;
}
2003-06-05 04:47:58 +00:00
/*
* The function below parses the command - line parameters for the decode as
* feature ( a string pointer by cl_param ) .
* It checks the format of the command - line , searches for a matching table
* and dissector . If a table / dissector match is not found , we display a
* summary of the available tables / dissectors ( on stderr ) and return FALSE .
* If everything is fine , we get the " Decode as " preference activated ,
* then we return TRUE .
*/
static gboolean
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add_decode_as ( const gchar * cl_param )
{
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gchar * table_name ;
guint32 selector ;
gchar * decoded_param ;
gchar * remaining_param ;
gchar * selector_str ;
gchar * dissector_str ;
dissector_handle_t dissector_matching ;
dissector_table_t table_matching ;
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ftenum_t dissector_table_selector_type ;
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struct protocol_name_search user_protocol_name ;
/* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
g_assert ( cl_param ) ;
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decoded_param = g_malloc ( sizeof ( gchar ) * ( strlen ( cl_param ) + 1 ) ) ; /* Allocate enough space to have a working copy of the command-line parameter */
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g_assert ( decoded_param ) ;
strcpy ( decoded_param , cl_param ) ;
/* The lines below will parse this string (modifying it) to extract all
necessary information . Note that decoded_param is still needed since
strings are not copied - we just save pointers . */
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/* This section extracts a layer type (table_name) from decoded_param */
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table_name = decoded_param ; /* Layer type string starts from beginning */
remaining_param = strchr ( table_name , ' = ' ) ;
if ( remaining_param = = NULL ) {
fprintf ( stderr , " tethereal: Parameter \" %s \" doesn't follow the template \" %s \" \n " , cl_param , decode_as_arg_template ) ;
2003-06-30 00:58:18 +00:00
/* If the argument does not follow the template, carry on anyway to check
if the table name is at least correct . If remaining_param is NULL ,
we ' ll exit anyway further down */
2003-06-05 04:47:58 +00:00
}
else {
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* remaining_param = ' \0 ' ; /* Terminate the layer type string (table_name) where '=' was detected */
2003-06-05 04:47:58 +00:00
}
/* Remove leading and trailing spaces from the table name */
while ( table_name [ 0 ] = = ' ' )
table_name + + ;
while ( table_name [ strlen ( table_name ) - 1 ] = = ' ' )
table_name [ strlen ( table_name ) - 1 ] = ' \0 ' ; /* Note: if empty string, while loop will eventually exit */
2003-06-30 00:58:18 +00:00
/* The following part searches a table matching with the layer type specified */
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table_matching = NULL ;
/* Look for the requested table */
if ( ! ( * ( table_name ) ) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
fprintf ( stderr , " tethereal: No layer type specified \n " ) ; /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
}
else {
table_matching = find_dissector_table ( table_name ) ;
if ( ! table_matching ) {
fprintf ( stderr , " tethereal: Unknown layer type -- %s \n " , table_name ) ; /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
}
}
if ( ! table_matching ) {
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/* Display a list of supported layer types to help the user, if the
specified layer type was not found */
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fprintf ( stderr , " tethereal: Valid layer types are: \n " ) ;
2003-06-30 00:58:18 +00:00
fprint_all_layer_types ( stderr ) ;
}
if ( remaining_param = = NULL | | ! table_matching ) {
/* Exit if the layer type was not found, or if no '=' separator was found
( see above ) */
2003-06-05 04:47:58 +00:00
g_free ( decoded_param ) ;
return FALSE ;
}
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if ( * ( remaining_param + 1 ) ! = ' = ' ) { /* Check for "==" and not only '=' */
fprintf ( stderr , " tethereal: WARNING: -d requires \" == \" instead of \" = \" . Option will be treated as \" %s==%s \" \n " , table_name , remaining_param + 1 ) ;
}
else {
remaining_param + + ; /* Move to the second '=' */
* remaining_param = ' \0 ' ; /* Remove the second '=' */
}
remaining_param + + ; /* Position after the layer type string */
/* This section extracts a selector value (selector_str) from decoded_param */
selector_str = remaining_param ; /* Next part starts with the selector number */
remaining_param = strchr ( selector_str , ' , ' ) ;
if ( remaining_param = = NULL ) {
fprintf ( stderr , " tethereal: Parameter \" %s \" doesn't follow the template \" %s \" \n " , cl_param , decode_as_arg_template ) ;
/* If the argument does not follow the template, carry on anyway to check
if the selector value is at least correct . If remaining_param is NULL ,
we ' ll exit anyway further down */
}
else {
* remaining_param = ' \0 ' ; /* Terminate the selector number string (selector_str) where ',' was detected */
}
2003-06-05 04:47:58 +00:00
2003-09-07 00:47:57 +00:00
dissector_table_selector_type = get_dissector_table_selector_type ( table_name ) ;
switch ( dissector_table_selector_type ) {
2003-06-05 04:47:58 +00:00
case FT_UINT8 :
case FT_UINT16 :
case FT_UINT24 :
case FT_UINT32 :
/* The selector for this table is an unsigned number. Parse it as such.
There ' s no need to remove leading and trailing spaces from the
selector number string , because sscanf will do that for us . */
if ( sscanf ( selector_str , " %u " , & selector ) ! = 1 ) {
fprintf ( stderr , " tethereal: Invalid selector number \" %s \" \n " , selector_str ) ;
g_free ( decoded_param ) ;
return FALSE ;
}
break ;
2003-09-07 00:47:57 +00:00
case FT_STRING :
case FT_STRINGZ :
/* The selector for this table is a string. */
break ;
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default :
/* There are currently no dissector tables with any types other
2003-09-07 00:47:57 +00:00
than the ones listed above . */
2003-06-05 04:47:58 +00:00
g_assert_not_reached ( ) ;
}
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if ( remaining_param = = NULL ) {
/* Exit if no ',' separator was found (see above) */
fprintf ( stderr , " tethereal: Valid protocols for layer type \" %s \" are: \n " , table_name ) ;
fprint_all_protocols_for_layer_types ( stderr , table_name ) ;
g_free ( decoded_param ) ;
return FALSE ;
}
remaining_param + + ; /* Position after the selector number string */
/* This section extracts a protocol filter name (dissector_str) from decoded_param */
dissector_str = remaining_param ; /* All the rest of the string is the dissector (decode as protocol) name */
2003-06-05 04:47:58 +00:00
/* Remove leading and trailing spaces from the dissector name */
while ( dissector_str [ 0 ] = = ' ' )
dissector_str + + ;
while ( dissector_str [ strlen ( dissector_str ) - 1 ] = = ' ' )
dissector_str [ strlen ( dissector_str ) - 1 ] = ' \0 ' ; /* Note: if empty string, while loop will eventually exit */
dissector_matching = NULL ;
2003-06-30 00:58:18 +00:00
/* We now have a pointer to the handle for the requested table inside the variable table_matching */
2003-06-05 04:47:58 +00:00
if ( ! ( * dissector_str ) ) { /* Is the dissector name empty, if so, don't even search for a matching dissector and display all dissectors found for the selected table */
fprintf ( stderr , " tethereal: No protocol name specified \n " ) ; /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
}
else {
user_protocol_name . nb_match = 0 ;
user_protocol_name . searched_name = dissector_str ;
user_protocol_name . matched_handle = NULL ;
2003-06-30 00:58:18 +00:00
dissector_table_foreach_handle ( table_name , find_protocol_name_func , & user_protocol_name ) ; /* Go and perform the search for this dissector in the this table's dissectors' names and shortnames */
2003-06-05 04:47:58 +00:00
if ( user_protocol_name . nb_match ! = 0 ) {
dissector_matching = user_protocol_name . matched_handle ;
if ( user_protocol_name . nb_match > 1 ) {
2003-06-30 00:58:18 +00:00
fprintf ( stderr , " tethereal: WARNING: Protocol \" %s \" matched %u dissectors, first one will be used \n " , dissector_str , user_protocol_name . nb_match ) ;
2003-06-05 04:47:58 +00:00
}
}
else {
/* OK, check whether the problem is that there isn't any such
protocol , or that there is but it ' s not specified as a protocol
that ' s valid for that dissector table .
Note , we don ' t exit here , but dissector_matching will remain NULL ,
so we exit below */
if ( proto_get_id_by_filter_name ( dissector_str ) = = - 1 ) {
/* No such protocol */
fprintf ( stderr , " tethereal: Unknown protocol -- \" %s \" \n " , dissector_str ) ;
} else {
fprintf ( stderr , " tethereal: Protocol \" %s \" isn't valid for layer type \" %s \" \n " ,
dissector_str , table_name ) ;
}
}
}
if ( ! dissector_matching ) {
fprintf ( stderr , " tethereal: Valid protocols for layer type \" %s \" are: \n " , table_name ) ;
2003-06-30 00:58:18 +00:00
fprint_all_protocols_for_layer_types ( stderr , table_name ) ;
2003-06-05 04:47:58 +00:00
g_free ( decoded_param ) ;
return FALSE ;
}
2003-06-30 00:58:18 +00:00
/* This is the end of the code that parses the command-line options.
All information is now stored in the variables :
table_name
selector
dissector_matching
The above variables that are strings are still pointing to areas within
decoded_parm . decoded_parm thus still needs to be kept allocated in
until we stop needing these variables
decoded_param will be deallocated at each exit point of this function */
2003-06-05 04:47:58 +00:00
/* We now have a pointer to the handle for the requested dissector
( requested protocol ) inside the variable dissector_matching */
2003-09-07 00:47:57 +00:00
switch ( dissector_table_selector_type ) {
case FT_UINT8 :
case FT_UINT16 :
case FT_UINT24 :
case FT_UINT32 :
/* The selector for this table is an unsigned number. */
dissector_change ( table_name , selector , dissector_matching ) ;
break ;
case FT_STRING :
case FT_STRINGZ :
/* The selector for this table is a string. */
dissector_change_string ( table_name , selector_str , dissector_matching ) ;
break ;
default :
/* There are currently no dissector tables with any types other
than the ones listed above . */
g_assert_not_reached ( ) ;
}
2003-06-05 04:47:58 +00:00
g_free ( decoded_param ) ; /* "Decode As" rule has been succesfully added */
return TRUE ;
}
2000-01-14 06:46:00 +00:00
int
main ( int argc , char * argv [ ] )
{
int opt , i ;
extern char * optarg ;
gboolean arg_error = FALSE ;
2000-11-20 17:08:20 +00:00
2002-12-31 21:18:05 +00:00
# ifdef _WIN32
2000-11-20 17:08:20 +00:00
WSADATA wsaData ;
2002-12-31 21:18:05 +00:00
# endif /* _WIN32 */
2000-11-20 17:08:20 +00:00
2003-08-07 00:41:28 +00:00
char * gpf_path , * pf_path ;
char * dp_path ;
int gpf_open_errno , gpf_read_errno ;
int pf_open_errno , pf_read_errno ;
int dp_open_errno , dp_read_errno ;
2000-01-14 06:46:00 +00:00
int err ;
2000-01-15 06:05:21 +00:00
# ifdef HAVE_LIBPCAP
2000-02-22 07:07:55 +00:00
gboolean capture_filter_specified = FALSE ;
2001-03-27 06:16:11 +00:00
GList * if_list , * if_entry ;
2003-09-10 05:35:26 +00:00
if_info_t * if_info ;
2003-09-06 02:22:24 +00:00
long adapter_index ;
char * p ;
2000-01-15 06:05:21 +00:00
gchar err_str [ PCAP_ERRBUF_SIZE ] ;
# else
2000-01-14 06:46:00 +00:00
gboolean capture_option_specified = FALSE ;
# endif
2001-05-31 08:36:46 +00:00
int out_file_type = WTAP_FILE_PCAP ;
2002-07-17 00:22:30 +00:00
gchar * cf_name = NULL , * rfilter = NULL ;
# ifdef HAVE_LIBPCAP
gchar * if_text ;
2003-11-01 02:30:18 +00:00
GList * lt_list , * lt_entry ;
data_link_info_t * data_link_info ;
2003-10-10 21:13:21 +00:00
# endif
# ifdef HAVE_PCAP_COMPILE_NOPCAP
2003-10-10 13:33:49 +00:00
struct bpf_program fcode ;
2002-07-17 00:22:30 +00:00
# endif
2001-02-01 20:21:25 +00:00
dfilter_t * rfcode = NULL ;
2000-01-14 06:46:00 +00:00
e_prefs * prefs ;
2001-05-31 08:36:46 +00:00
char badopt ;
2002-10-31 22:16:01 +00:00
ethereal_tap_list * tli ;
2000-01-14 06:46:00 +00:00
Add support for a global "ethereal.conf" preferences file, stored in the
same directory as the "manuf" file ("/etc" or "/usr/local/etc", most
likely).
Add a mechanism to allow modules (e.g., dissectors) to register
preference values, which:
can be put into the global or the user's preference file;
can be set from the command line, with arguments to the "-o"
flag;
can be set from tabs in the "Preferences" dialog box.
Use that mechanism to register the "Decode IPv4 TOS field as DiffServ
field" variable for IP as a preference.
Stuff that still needs to be done:
documenting the API for registering preferences;
documenting the "-o" values in the man page (probably needs a
flag similar to "-G", and a Perl script to turn the output into
documentation as is done with the list of field);
handling error checking for numeric values (range checking,
making sure that if the user changes the variable from the GUI
they change it to a valid numeric value);
using the callbacks to, for example, update the display when
preferences are changed (could be expensive);
panic if the user specifies a numeric value with a base other
than 10, 8, or 16.
We may also want to clean up the existing wired-in preferences not to
take effect the instant you tweak the widget, and to add an "Apply"
button to the "Preferences" dialog.
svn path=/trunk/; revision=2117
2000-07-05 09:41:07 +00:00
/* Register all dissectors; we must do this before checking for the
2002-05-14 10:15:12 +00:00
" -G " flag , as the " -G " flag dumps information registered by the
dissectors , and we must do it before we read the preferences , in
case any dissectors register preferences . */
2001-04-02 00:38:36 +00:00
epan_init ( PLUGIN_DIR , register_all_protocols , register_all_protocol_handoffs ) ;
2003-04-23 03:51:03 +00:00
/* Register all tap listeners; we do this before we parse the arguments,
as the " -z " argument can specify a registered tap . */
2002-10-31 22:16:01 +00:00
register_all_tap_listeners ( ) ;
Add support for a global "ethereal.conf" preferences file, stored in the
same directory as the "manuf" file ("/etc" or "/usr/local/etc", most
likely).
Add a mechanism to allow modules (e.g., dissectors) to register
preference values, which:
can be put into the global or the user's preference file;
can be set from the command line, with arguments to the "-o"
flag;
can be set from tabs in the "Preferences" dialog box.
Use that mechanism to register the "Decode IPv4 TOS field as DiffServ
field" variable for IP as a preference.
Stuff that still needs to be done:
documenting the API for registering preferences;
documenting the "-o" values in the man page (probably needs a
flag similar to "-G", and a Perl script to turn the output into
documentation as is done with the list of field);
handling error checking for numeric values (range checking,
making sure that if the user changes the variable from the GUI
they change it to a valid numeric value);
using the callbacks to, for example, update the display when
preferences are changed (could be expensive);
panic if the user specifies a numeric value with a base other
than 10, 8, or 16.
We may also want to clean up the existing wired-in preferences not to
take effect the instant you tweak the widget, and to add an "Apply"
button to the "Preferences" dialog.
svn path=/trunk/; revision=2117
2000-07-05 09:41:07 +00:00
/* Now register the preferences for any non-dissector modules.
We must do that before we read the preferences as well . */
prefs_register_modules ( ) ;
2002-05-14 10:15:12 +00:00
/* If invoked with the "-G" flag, we dump out information based on
the argument to the " -G " flag ; if no argument is specified ,
for backwards compatibility we dump out a glossary of display
filter symbols .
2000-01-14 06:46:00 +00:00
We do this here to mirror what happens in the GTK + version , although
it ' s not necessary here . */
if ( argc > = 2 & & strcmp ( argv [ 1 ] , " -G " ) = = 0 ) {
2002-05-14 10:15:12 +00:00
if ( argc = = 2 )
proto_registrar_dump_fields ( ) ;
else {
if ( strcmp ( argv [ 2 ] , " fields " ) = = 0 )
proto_registrar_dump_fields ( ) ;
else if ( strcmp ( argv [ 2 ] , " protocols " ) = = 0 )
proto_registrar_dump_protocols ( ) ;
2002-05-14 18:27:28 +00:00
else {
fprintf ( stderr , " tethereal: Invalid \" %s \" option for -G flag \n " ,
argv [ 2 ] ) ;
exit ( 1 ) ;
}
2002-05-14 10:15:12 +00:00
}
2000-01-14 06:46:00 +00:00
exit ( 0 ) ;
}
2000-07-05 02:06:58 +00:00
/* Set the C-language locale to the native environment. */
setlocale ( LC_ALL , " " ) ;
2003-08-07 00:41:28 +00:00
prefs = read_prefs ( & gpf_open_errno , & gpf_read_errno , & gpf_path ,
& pf_open_errno , & pf_read_errno , & pf_path ) ;
Add support for a global "ethereal.conf" preferences file, stored in the
same directory as the "manuf" file ("/etc" or "/usr/local/etc", most
likely).
Add a mechanism to allow modules (e.g., dissectors) to register
preference values, which:
can be put into the global or the user's preference file;
can be set from the command line, with arguments to the "-o"
flag;
can be set from tabs in the "Preferences" dialog box.
Use that mechanism to register the "Decode IPv4 TOS field as DiffServ
field" variable for IP as a preference.
Stuff that still needs to be done:
documenting the API for registering preferences;
documenting the "-o" values in the man page (probably needs a
flag similar to "-G", and a Perl script to turn the output into
documentation as is done with the list of field);
handling error checking for numeric values (range checking,
making sure that if the user changes the variable from the GUI
they change it to a valid numeric value);
using the callbacks to, for example, update the display when
preferences are changed (could be expensive);
panic if the user specifies a numeric value with a base other
than 10, 8, or 16.
We may also want to clean up the existing wired-in preferences not to
take effect the instant you tweak the widget, and to add an "Apply"
button to the "Preferences" dialog.
svn path=/trunk/; revision=2117
2000-07-05 09:41:07 +00:00
if ( gpf_path ! = NULL ) {
2003-08-07 00:41:28 +00:00
if ( gpf_open_errno ! = 0 ) {
fprintf ( stderr , " Can't open global preferences file \" %s \" : %s. \n " ,
pf_path , strerror ( gpf_open_errno ) ) ;
}
if ( gpf_read_errno ! = 0 ) {
fprintf ( stderr , " I/O error reading global preferences file \" %s \" : %s. \n " ,
pf_path , strerror ( gpf_read_errno ) ) ;
}
Add support for a global "ethereal.conf" preferences file, stored in the
same directory as the "manuf" file ("/etc" or "/usr/local/etc", most
likely).
Add a mechanism to allow modules (e.g., dissectors) to register
preference values, which:
can be put into the global or the user's preference file;
can be set from the command line, with arguments to the "-o"
flag;
can be set from tabs in the "Preferences" dialog box.
Use that mechanism to register the "Decode IPv4 TOS field as DiffServ
field" variable for IP as a preference.
Stuff that still needs to be done:
documenting the API for registering preferences;
documenting the "-o" values in the man page (probably needs a
flag similar to "-G", and a Perl script to turn the output into
documentation as is done with the list of field);
handling error checking for numeric values (range checking,
making sure that if the user changes the variable from the GUI
they change it to a valid numeric value);
using the callbacks to, for example, update the display when
preferences are changed (could be expensive);
panic if the user specifies a numeric value with a base other
than 10, 8, or 16.
We may also want to clean up the existing wired-in preferences not to
take effect the instant you tweak the widget, and to add an "Apply"
button to the "Preferences" dialog.
svn path=/trunk/; revision=2117
2000-07-05 09:41:07 +00:00
}
2000-01-14 06:46:00 +00:00
if ( pf_path ! = NULL ) {
2003-08-07 00:41:28 +00:00
if ( pf_open_errno ! = 0 ) {
fprintf ( stderr , " Can't open your preferences file \" %s \" : %s. \n " , pf_path ,
strerror ( pf_open_errno ) ) ;
}
if ( pf_read_errno ! = 0 ) {
fprintf ( stderr , " I/O error reading your preferences file \" %s \" : %s. \n " ,
pf_path , strerror ( pf_read_errno ) ) ;
}
2002-08-01 03:15:29 +00:00
g_free ( pf_path ) ;
pf_path = NULL ;
2000-01-14 06:46:00 +00:00
}
2001-04-03 05:26:27 +00:00
2002-01-13 20:35:12 +00:00
/* Set the name resolution code's flags from the preferences. */
g_resolv_flags = prefs - > name_resolve ;
2003-08-07 00:41:28 +00:00
/* Read the disabled protocols file. */
read_disabled_protos_list ( & dp_path , & dp_open_errno , & dp_read_errno ) ;
if ( dp_path ! = NULL ) {
if ( dp_open_errno ! = 0 ) {
fprintf ( stderr ,
" Could not open your disabled protocols file \n \" %s \" : %s. \n " , dp_path ,
strerror ( dp_open_errno ) ) ;
}
if ( dp_read_errno ! = 0 ) {
fprintf ( stderr ,
" I/O error reading your disabled protocols file \n \" %s \" : %s. \n " , dp_path ,
strerror ( dp_read_errno ) ) ;
}
g_free ( dp_path ) ;
}
2002-12-31 21:18:05 +00:00
# ifdef _WIN32
2001-04-03 05:26:27 +00:00
/* Load Wpcap, if possible */
load_wpcap ( ) ;
2001-04-03 05:55:44 +00:00
# endif
2002-08-28 21:04:11 +00:00
2002-09-06 22:45:44 +00:00
init_cap_file ( & cfile ) ;
2000-01-14 06:46:00 +00:00
2003-03-12 00:07:46 +00:00
/* Assemble the compile-time version information string */
comp_info_str = g_string_new ( " Compiled " ) ;
get_compiled_version_info ( comp_info_str ) ;
2001-03-27 06:48:12 +00:00
2003-03-12 00:07:46 +00:00
/* Assemble the run-time version information string */
runtime_info_str = g_string_new ( " Running " ) ;
get_runtime_version_info ( runtime_info_str ) ;
2002-08-28 21:04:11 +00:00
2003-12-06 06:09:13 +00:00
/* Print format defaults to this. */
print_format = PR_FMT_TEXT ;
2000-01-14 06:46:00 +00:00
/* Now get our args */
2003-12-06 06:09:13 +00:00
while ( ( opt = getopt ( argc , argv , " a:b:c:d:Df:F:hi:lLnN:o:pqr:R:s:St:T:vw:Vxy:z: " ) ) ! = - 1 ) {
2000-01-14 06:46:00 +00:00
switch ( opt ) {
2001-12-04 07:32:05 +00:00
case ' a ' : /* autostop criteria */
# ifdef HAVE_LIBPCAP
if ( set_autostop_criterion ( optarg ) = = FALSE ) {
2003-06-05 04:47:58 +00:00
fprintf ( stderr , " tethereal: Invalid or unknown -a flag \" %s \" \n " , optarg ) ;
2002-08-28 21:04:11 +00:00
exit ( 1 ) ;
2001-12-04 07:32:05 +00:00
}
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
2001-12-04 08:26:00 +00:00
# endif
break ;
case ' b ' : /* Ringbuffer option */
# ifdef HAVE_LIBPCAP
2002-02-24 09:25:36 +00:00
capture_opts . ringbuffer_on = TRUE ;
2003-05-15 13:40:20 +00:00
if ( get_ring_arguments ( optarg ) = = FALSE ) {
2003-06-05 04:47:58 +00:00
fprintf ( stderr , " tethereal: Invalid or unknown -b arg \" %s \" \n " , optarg ) ;
2003-05-15 13:40:20 +00:00
exit ( 1 ) ;
}
2001-12-04 08:26:00 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
2001-12-04 07:32:05 +00:00
# endif
break ;
2000-01-14 06:46:00 +00:00
case ' c ' : /* Capture xxx packets */
# ifdef HAVE_LIBPCAP
2002-02-24 09:25:36 +00:00
capture_opts . autostop_count =
get_positive_int ( optarg , " packet count " ) ;
2000-01-14 06:46:00 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2003-06-05 04:47:58 +00:00
case ' d ' : /* Decode as rule */
if ( ! add_decode_as ( optarg ) )
exit ( 1 ) ;
break ;
2001-03-27 06:16:11 +00:00
case ' D ' : /* Print a list of capture devices */
2001-03-27 06:48:12 +00:00
# ifdef HAVE_LIBPCAP
2001-03-27 06:16:11 +00:00
if_list = get_interface_list ( & err , err_str ) ;
if ( if_list = = NULL ) {
switch ( err ) {
case CANT_GET_INTERFACE_LIST :
fprintf ( stderr , " tethereal: Can't get list of interfaces: %s \n " ,
err_str ) ;
break ;
case NO_INTERFACES_FOUND :
fprintf ( stderr , " tethereal: There are no interfaces on which a capture can be done \n " ) ;
break ;
}
exit ( 2 ) ;
}
2003-09-06 02:22:24 +00:00
i = 1 ; /* Interface id number */
2001-03-27 06:16:11 +00:00
for ( if_entry = g_list_first ( if_list ) ; if_entry ! = NULL ;
2003-09-10 05:35:26 +00:00
if_entry = g_list_next ( if_entry ) ) {
if_info = if_entry - > data ;
printf ( " %d. %s " , i + + , if_info - > name ) ;
if ( if_info - > description ! = NULL )
printf ( " (%s) " , if_info - > description ) ;
printf ( " \n " ) ;
}
2001-03-27 06:16:11 +00:00
free_interface_list ( if_list ) ;
exit ( 0 ) ;
2001-03-27 06:48:12 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
2001-03-27 06:16:11 +00:00
break ;
2000-01-14 06:46:00 +00:00
case ' f ' :
# ifdef HAVE_LIBPCAP
2000-02-22 07:07:55 +00:00
capture_filter_specified = TRUE ;
2002-05-22 23:22:56 +00:00
if ( cfile . cfilter )
g_free ( cfile . cfilter ) ;
2000-06-27 04:36:03 +00:00
cfile . cfilter = g_strdup ( optarg ) ;
2000-01-14 06:46:00 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2000-01-17 08:06:42 +00:00
case ' F ' :
out_file_type = wtap_short_string_to_file_type ( optarg ) ;
if ( out_file_type < 0 ) {
fprintf ( stderr , " tethereal: \" %s \" is not a valid capture file type \n " ,
optarg ) ;
exit ( 1 ) ;
}
break ;
2000-01-14 06:46:00 +00:00
case ' h ' : /* Print help and exit */
2002-05-22 23:22:56 +00:00
print_usage ( TRUE ) ;
2000-01-14 06:46:00 +00:00
exit ( 0 ) ;
break ;
case ' i ' : /* Use interface xxx */
# ifdef HAVE_LIBPCAP
2003-09-06 02:22:24 +00:00
/*
* If the argument is a number , treat it as an index into the list
* of adapters , as printed by " tethereal -D " .
*
* This should be OK on UNIX systems , as interfaces shouldn ' t have
* names that begin with digits . It can be useful on Windows , where
* more than one interface can have the same name .
*/
adapter_index = strtol ( optarg , & p , 10 ) ;
if ( p ! = NULL & & * p = = ' \0 ' ) {
if ( adapter_index < 0 ) {
fprintf ( stderr ,
" tethereal: The specified adapter index is a negative number \n " ) ;
exit ( 1 ) ;
}
if ( adapter_index > INT_MAX ) {
fprintf ( stderr ,
" tethereal: The specified adapter index is too large (greater than %d) \n " ,
INT_MAX ) ;
exit ( 1 ) ;
}
if ( adapter_index = = 0 ) {
fprintf ( stderr , " tethereal: there is no interface with that adapter index \n " ) ;
exit ( 1 ) ;
}
if_list = get_interface_list ( & err , err_str ) ;
if ( if_list = = NULL ) {
switch ( err ) {
case CANT_GET_INTERFACE_LIST :
fprintf ( stderr , " tethereal: Can't get list of interfaces: %s \n " ,
err_str ) ;
break ;
case NO_INTERFACES_FOUND :
fprintf ( stderr , " tethereal: There are no interfaces on which a capture can be done \n " ) ;
break ;
}
exit ( 2 ) ;
}
2003-09-10 05:35:26 +00:00
if_info = g_list_nth_data ( if_list , adapter_index - 1 ) ;
if ( if_info = = NULL ) {
2003-09-06 02:22:24 +00:00
fprintf ( stderr , " tethereal: there is no interface with that adapter index \n " ) ;
exit ( 1 ) ;
}
2003-09-10 05:35:26 +00:00
cfile . iface = g_strdup ( if_info - > name ) ;
2003-09-06 02:22:24 +00:00
free_interface_list ( if_list ) ;
} else
cfile . iface = g_strdup ( optarg ) ;
2000-01-14 06:46:00 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2001-02-18 03:38:44 +00:00
case ' l ' : /* "Line-buffer" standard output */
/* This isn't line-buffering, strictly speaking, it's just
flushing the standard output after the information for
each packet is printed ; however , that should be good
2003-11-01 02:30:18 +00:00
enough for all the purposes to which " -l " is put ( and
is probably actually better for " -V " , as it does fewer
writes ) .
2001-02-18 03:38:44 +00:00
See the comment in " wtap_dispatch_cb_print() " for an
explanation of why we do that , and why we don ' t just
use " setvbuf() " to make the standard output line - buffered
( short version : in Windows , " line-buffered " is the same
as " fully-buffered " , and the output buffer is only flushed
when it fills up ) . */
line_buffered = TRUE ;
2000-09-20 08:28:54 +00:00
break ;
2003-11-01 02:30:18 +00:00
case ' L ' : /* Print list of link-layer types and exit */
# ifdef HAVE_LIBPCAP
list_link_layer_types = TRUE ;
break ;
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2000-01-14 06:46:00 +00:00
case ' n ' : /* No name resolution */
2002-01-13 20:35:12 +00:00
g_resolv_flags = RESOLV_NONE ;
2001-05-31 08:36:46 +00:00
break ;
case ' N ' : /* Select what types of addresses/port #s to resolve */
2002-01-13 20:35:12 +00:00
if ( g_resolv_flags = = RESOLV_ALL )
g_resolv_flags = RESOLV_NONE ;
badopt = string_to_name_resolve ( optarg , & g_resolv_flags ) ;
2001-05-31 08:36:46 +00:00
if ( badopt ! = ' \0 ' ) {
fprintf ( stderr , " tethereal: -N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't' \n " ,
badopt ) ;
exit ( 1 ) ;
}
break ;
Add support for a global "ethereal.conf" preferences file, stored in the
same directory as the "manuf" file ("/etc" or "/usr/local/etc", most
likely).
Add a mechanism to allow modules (e.g., dissectors) to register
preference values, which:
can be put into the global or the user's preference file;
can be set from the command line, with arguments to the "-o"
flag;
can be set from tabs in the "Preferences" dialog box.
Use that mechanism to register the "Decode IPv4 TOS field as DiffServ
field" variable for IP as a preference.
Stuff that still needs to be done:
documenting the API for registering preferences;
documenting the "-o" values in the man page (probably needs a
flag similar to "-G", and a Perl script to turn the output into
documentation as is done with the list of field);
handling error checking for numeric values (range checking,
making sure that if the user changes the variable from the GUI
they change it to a valid numeric value);
using the callbacks to, for example, update the display when
preferences are changed (could be expensive);
panic if the user specifies a numeric value with a base other
than 10, 8, or 16.
We may also want to clean up the existing wired-in preferences not to
take effect the instant you tweak the widget, and to add an "Apply"
button to the "Preferences" dialog.
svn path=/trunk/; revision=2117
2000-07-05 09:41:07 +00:00
case ' o ' : /* Override preference from command line */
switch ( prefs_set_pref ( optarg ) ) {
case PREFS_SET_SYNTAX_ERR :
fprintf ( stderr , " tethereal: Invalid -o flag \" %s \" \n " , optarg ) ;
exit ( 1 ) ;
break ;
case PREFS_SET_NO_SUCH_PREF :
Allow a dissector to register preferences that it no longer supports as
obsolete; we silently ignore attempts to set those in a preferences
file, so that we don't spam the user with error messages caused by them
having saved preferences in an earlier release that contained those
preferences.
Make the Diameter and iSCSI dissectors register obsolete preferences.
Crash if some code tries to register a preferences module with a name
that contains something other than lower-case ASCII letters, numbers, or
underscores, or that has already been registered, or if some code tries
to register a preference with a name that contains something other than
lower-case ASCII letters, numbers, underscores, or periods, or that has
already been registered, so that we don't put code like that in a
release and have to shovel code into "prefs.c" to fix it up later. (The
problem with multiple modules or preferences with the same name should
be obvious; the problem with names with blanks, or upper-case letters,
or punctuation, is that they're a pain to type on the command line.)
svn path=/trunk/; revision=4148
2001-11-04 02:50:21 +00:00
case PREFS_SET_OBSOLETE :
Add support for a global "ethereal.conf" preferences file, stored in the
same directory as the "manuf" file ("/etc" or "/usr/local/etc", most
likely).
Add a mechanism to allow modules (e.g., dissectors) to register
preference values, which:
can be put into the global or the user's preference file;
can be set from the command line, with arguments to the "-o"
flag;
can be set from tabs in the "Preferences" dialog box.
Use that mechanism to register the "Decode IPv4 TOS field as DiffServ
field" variable for IP as a preference.
Stuff that still needs to be done:
documenting the API for registering preferences;
documenting the "-o" values in the man page (probably needs a
flag similar to "-G", and a Perl script to turn the output into
documentation as is done with the list of field);
handling error checking for numeric values (range checking,
making sure that if the user changes the variable from the GUI
they change it to a valid numeric value);
using the callbacks to, for example, update the display when
preferences are changed (could be expensive);
panic if the user specifies a numeric value with a base other
than 10, 8, or 16.
We may also want to clean up the existing wired-in preferences not to
take effect the instant you tweak the widget, and to add an "Apply"
button to the "Preferences" dialog.
svn path=/trunk/; revision=2117
2000-07-05 09:41:07 +00:00
fprintf ( stderr , " tethereal: -o flag \" %s \" specifies unknown preference \n " ,
optarg ) ;
exit ( 1 ) ;
break ;
}
break ;
2000-09-15 05:32:49 +00:00
case ' p ' : /* Don't capture in promiscuous mode */
# ifdef HAVE_LIBPCAP
2002-02-24 09:25:36 +00:00
capture_opts . promisc_mode = FALSE ;
2000-09-15 05:32:49 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2002-03-22 23:42:27 +00:00
case ' q ' : /* Quiet */
quiet = TRUE ;
break ;
2000-01-14 06:46:00 +00:00
case ' r ' : /* Read capture file xxx */
cf_name = g_strdup ( optarg ) ;
break ;
case ' R ' : /* Read file filter */
rfilter = optarg ;
break ;
case ' s ' : /* Set the snapshot (capture) length */
# ifdef HAVE_LIBPCAP
2002-02-24 09:25:36 +00:00
capture_opts . snaplen = get_positive_int ( optarg , " snapshot length " ) ;
2000-01-14 06:46:00 +00:00
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2002-08-20 20:49:31 +00:00
case ' S ' : /* show packets in real time */
decode = TRUE ;
break ;
2000-01-14 06:46:00 +00:00
case ' t ' : /* Time stamp type */
if ( strcmp ( optarg , " r " ) = = 0 )
timestamp_type = RELATIVE ;
else if ( strcmp ( optarg , " a " ) = = 0 )
timestamp_type = ABSOLUTE ;
2000-11-01 08:31:36 +00:00
else if ( strcmp ( optarg , " ad " ) = = 0 )
timestamp_type = ABSOLUTE_WITH_DATE ;
2000-01-14 06:46:00 +00:00
else if ( strcmp ( optarg , " d " ) = = 0 )
timestamp_type = DELTA ;
else {
fprintf ( stderr , " tethereal: Invalid time stamp type \" %s \" \n " ,
optarg ) ;
fprintf ( stderr , " It must be \" r \" for relative, \" a \" for absolute, \n " ) ;
2000-11-01 08:31:36 +00:00
fprintf ( stderr , " \" ad \" for absolute with date, or \" d \" for delta. \n " ) ;
2000-01-14 06:46:00 +00:00
exit ( 1 ) ;
}
break ;
2003-12-06 06:09:13 +00:00
case ' T ' : /* printing Type */
if ( strcmp ( optarg , " text " ) = = 0 )
print_format = PR_FMT_TEXT ;
else if ( strcmp ( optarg , " pdml " ) = = 0 )
print_format = PR_FMT_PDML ;
else if ( strcmp ( optarg , " ps " ) = = 0 )
print_format = PR_FMT_PS ;
else {
fprintf ( stderr , " tethereal: Invalid -T parameter. \n " ) ;
fprintf ( stderr , " It must be \" ps \" , \" text \" or \" pdml \" . \n " ) ;
exit ( 1 ) ;
}
break ;
2000-01-14 06:46:00 +00:00
case ' v ' : /* Show version and exit */
2003-03-12 00:07:46 +00:00
printf ( " t%s %s \n %s \n %s \n " , PACKAGE , VERSION , comp_info_str - > str ,
runtime_info_str - > str ) ;
2000-01-14 06:46:00 +00:00
exit ( 0 ) ;
break ;
case ' w ' : /* Write to capture file xxx */
2000-06-27 04:36:03 +00:00
cfile . save_file = g_strdup ( optarg ) ;
2000-01-14 06:46:00 +00:00
break ;
case ' V ' : /* Verbose */
verbose = TRUE ;
break ;
2000-01-17 07:49:03 +00:00
case ' x ' : /* Print packet data in hex (and ASCII) */
print_hex = TRUE ;
break ;
2003-11-01 02:30:18 +00:00
case ' y ' : /* Set the pcap data link type */
# ifdef HAVE_LIBPCAP
# ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
capture_opts . linktype = pcap_datalink_name_to_val ( optarg ) ;
if ( capture_opts . linktype = = - 1 ) {
fprintf ( stderr , " tethereal: The specified data link type \" %s \" is not valid \n " ,
optarg ) ;
exit ( 1 ) ;
}
# else /* HAVE_PCAP_DATALINK_NAME_TO_VAL */
/* XXX - just treat it as a number */
capture_opts . linktype = get_natural_int ( optarg , " data link type " ) ;
# endif /* HAVE_PCAP_DATALINK_NAME_TO_VAL */
# else
capture_option_specified = TRUE ;
arg_error = TRUE ;
# endif
break ;
2002-09-05 06:46:38 +00:00
case ' z ' :
2002-10-31 22:16:01 +00:00
for ( tli = tap_list ; tli ; tli = tli - > next ) {
if ( ! strncmp ( tli - > cmd , optarg , strlen ( tli - > cmd ) ) ) {
( * tli - > func ) ( optarg ) ;
break ;
2002-09-04 09:40:29 +00:00
}
2002-10-31 22:16:01 +00:00
}
if ( ! tli ) {
fprintf ( stderr , " tethereal: invalid -z argument. \n " ) ;
fprintf ( stderr , " -z argument must be one of : \n " ) ;
for ( tli = tap_list ; tli ; tli = tli - > next ) {
fprintf ( stderr , " %s \n " , tli - > cmd ) ;
2002-10-23 03:49:13 +00:00
}
2002-09-04 09:40:29 +00:00
exit ( 1 ) ;
}
break ;
2002-05-22 23:22:56 +00:00
default :
case ' ? ' : /* Bad flag - print usage message */
arg_error = TRUE ;
break ;
2000-01-14 06:46:00 +00:00
}
}
2002-08-28 21:04:11 +00:00
2003-12-09 05:56:31 +00:00
/* If printing PDML or PS, force -V */
if ( print_format = = PR_FMT_PDML | | PR_FMT_PS )
verbose = TRUE ;
2003-12-06 06:09:13 +00:00
2000-02-22 07:07:55 +00:00
/* If no capture filter or read filter has been specified, and there are
still command - line arguments , treat them as the tokens of a capture
filter ( if no " -r " flag was specified ) or a read filter ( if a " -r "
flag was specified . */
if ( optind < argc ) {
if ( cf_name ! = NULL ) {
if ( rfilter ! = NULL ) {
fprintf ( stderr ,
" tethereal: Read filters were specified both with \" -R \" and with additional command-line arguments \n " ) ;
exit ( 2 ) ;
}
rfilter = get_args_as_string ( argc , argv , optind ) ;
} else {
# ifdef HAVE_LIBPCAP
if ( capture_filter_specified ) {
fprintf ( stderr ,
" tethereal: Capture filters were specified both with \" -f \" and with additional command-line arguments \n " ) ;
exit ( 2 ) ;
}
2000-06-27 04:36:03 +00:00
cfile . cfilter = get_args_as_string ( argc , argv , optind ) ;
2000-02-22 07:07:55 +00:00
# else
capture_option_specified = TRUE ;
# endif
}
}
2002-06-23 21:33:09 +00:00
/* See if we're writing a capture file and the file is a pipe */
2002-07-17 00:22:30 +00:00
# ifdef HAVE_LIBPCAP
2002-06-23 20:30:01 +00:00
ld . output_to_pipe = FALSE ;
2002-07-17 00:22:30 +00:00
# endif
2002-06-23 20:30:01 +00:00
if ( cfile . save_file ! = NULL ) {
2002-12-29 22:40:10 +00:00
if ( strcmp ( cfile . save_file , " - " ) = = 0 ) {
2002-07-16 07:15:09 +00:00
/* stdout */
g_free ( cfile . save_file ) ;
cfile . save_file = g_strdup ( " " ) ;
2002-07-17 00:22:30 +00:00
# ifdef HAVE_LIBPCAP
2002-06-23 21:33:09 +00:00
ld . output_to_pipe = TRUE ;
2002-07-17 00:22:30 +00:00
# endif
}
# ifdef HAVE_LIBPCAP
else {
2002-07-16 07:15:09 +00:00
err = test_for_fifo ( cfile . save_file ) ;
switch ( err ) {
2002-08-28 21:04:11 +00:00
2002-07-16 07:15:09 +00:00
case ENOENT : /* it doesn't exist, so we'll be creating it,
and it won ' t be a FIFO */
case 0 : /* found it, but it's not a FIFO */
break ;
2002-08-28 21:04:11 +00:00
2002-07-16 07:15:09 +00:00
case ESPIPE : /* it is a FIFO */
ld . output_to_pipe = TRUE ;
break ;
2002-08-28 21:04:11 +00:00
2002-07-16 07:15:09 +00:00
default : /* couldn't stat it */
fprintf ( stderr ,
" tethereal: Error testing whether capture file is a pipe: %s \n " ,
strerror ( errno ) ) ;
exit ( 2 ) ;
}
2002-06-23 20:30:01 +00:00
}
2002-07-17 00:22:30 +00:00
# endif
2002-06-23 20:30:01 +00:00
}
2003-11-01 02:30:18 +00:00
# ifndef HAVE_LIBPCAP
if ( capture_option_specified )
fprintf ( stderr , " This version of Tethereal was not built with support for capturing packets. \n " ) ;
# endif
if ( arg_error ) {
print_usage ( FALSE ) ;
exit ( 1 ) ;
2001-12-21 19:58:30 +00:00
}
2003-11-01 02:30:18 +00:00
# ifdef HAVE_LIBPCAP
if ( list_link_layer_types ) {
/* We're supposed to list the link-layer types for an interface;
did the user also specify a capture file to be read ? */
if ( cf_name ) {
/* Yes - that's bogus. */
fprintf ( stderr , " tethereal: You cannot specify -L and a capture file to be read. \n " ) ;
exit ( 1 ) ;
2001-12-21 20:06:43 +00:00
}
2003-11-01 02:30:18 +00:00
/* No - did they specify a ring buffer option? */
if ( capture_opts . ringbuffer_on ) {
fprintf ( stderr , " tethereal: Ring buffer requested, but a capture is not being done. \n " ) ;
exit ( 1 ) ;
2002-01-29 05:38:56 +00:00
}
2003-11-01 02:30:18 +00:00
} else {
/* If they didn't specify a "-w" flag, but specified a maximum capture
file size , tell them that this doesn ' t work , and exit . */
if ( capture_opts . has_autostop_filesize & & cfile . save_file = = NULL ) {
fprintf ( stderr , " tethereal: Maximum capture file size specified, but "
" capture isn't being saved to a file. \n " ) ;
exit ( 1 ) ;
2002-06-23 20:30:01 +00:00
}
2003-11-01 02:30:18 +00:00
if ( capture_opts . ringbuffer_on ) {
/* Ring buffer works only under certain conditions:
a ) ring buffer does not work if you ' re not saving the capture to
a file ;
b ) ring buffer only works if you ' re saving in libpcap format ;
c ) it makes no sense to enable the ring buffer if the maximum
file size is set to " infinite " ;
d ) file must not be a pipe . */
if ( cfile . save_file = = NULL ) {
fprintf ( stderr , " tethereal: Ring buffer requested, but "
" capture isn't being saved to a file. \n " ) ;
exit ( 1 ) ;
}
if ( out_file_type ! = WTAP_FILE_PCAP ) {
fprintf ( stderr , " tethereal: Ring buffer requested, but "
" capture isn't being saved in libpcap format. \n " ) ;
exit ( 2 ) ;
}
if ( ! capture_opts . has_autostop_filesize ) {
fprintf ( stderr , " tethereal: Ring buffer requested, but "
" no maximum capture file size was specified. \n " ) ;
exit ( 2 ) ;
}
if ( ld . output_to_pipe ) {
fprintf ( stderr , " tethereal: Ring buffer requested, but "
" capture file is a pipe. \n " ) ;
exit ( 2 ) ;
}
2001-12-21 20:06:43 +00:00
}
}
2002-01-10 09:51:23 +00:00
# endif
2001-12-21 20:06:43 +00:00
2002-12-31 21:18:05 +00:00
# ifdef _WIN32
2000-11-20 17:08:20 +00:00
/* Start windows sockets */
WSAStartup ( MAKEWORD ( 1 , 1 ) , & wsaData ) ;
2002-12-31 21:18:05 +00:00
# endif /* _WIN32 */
2000-11-20 17:08:20 +00:00
2000-07-09 03:29:42 +00:00
/* Notify all registered modules that have had any of their preferences
changed either from one of the preferences file or from the command
2002-07-07 21:52:51 +00:00
line that their preferences have changed . */
2000-07-09 03:29:42 +00:00
prefs_apply_all ( ) ;
2003-08-07 00:41:28 +00:00
/* disabled protocols as per configuration file */
if ( dp_path = = NULL ) {
set_disabled_protos_list ( ) ;
}
2002-08-28 21:04:11 +00:00
/* Build the column format array */
2003-04-16 05:55:41 +00:00
col_setup ( & cfile . cinfo , prefs - > num_cols ) ;
2000-06-27 04:36:03 +00:00
for ( i = 0 ; i < cfile . cinfo . num_cols ; i + + ) {
cfile . cinfo . col_fmt [ i ] = get_column_format ( i ) ;
cfile . cinfo . col_title [ i ] = g_strdup ( get_column_title ( i ) ) ;
cfile . cinfo . fmt_matx [ i ] = ( gboolean * ) g_malloc0 ( sizeof ( gboolean ) *
2000-01-14 06:46:00 +00:00
NUM_COL_FMTS ) ;
2000-06-27 04:36:03 +00:00
get_column_format_matches ( cfile . cinfo . fmt_matx [ i ] , cfile . cinfo . col_fmt [ i ] ) ;
2000-11-19 08:54:37 +00:00
cfile . cinfo . col_data [ i ] = NULL ;
2000-06-27 04:36:03 +00:00
if ( cfile . cinfo . col_fmt [ i ] = = COL_INFO )
2000-11-19 08:54:37 +00:00
cfile . cinfo . col_buf [ i ] = ( gchar * ) g_malloc ( sizeof ( gchar ) * COL_MAX_INFO_LEN ) ;
2000-01-14 06:46:00 +00:00
else
2000-11-19 08:54:37 +00:00
cfile . cinfo . col_buf [ i ] = ( gchar * ) g_malloc ( sizeof ( gchar ) * COL_MAX_LEN ) ;
2003-04-16 04:52:55 +00:00
cfile . cinfo . col_fence [ i ] = 0 ;
2002-01-15 23:11:02 +00:00
cfile . cinfo . col_expr [ i ] = ( gchar * ) g_malloc ( sizeof ( gchar ) * COL_MAX_LEN ) ;
cfile . cinfo . col_expr_val [ i ] = ( gchar * ) g_malloc ( sizeof ( gchar ) * COL_MAX_LEN ) ;
2000-01-14 06:46:00 +00:00
}
2003-12-02 23:14:32 +00:00
for ( i = 0 ; i < cfile . cinfo . num_cols ; i + + ) {
int j ;
for ( j = 0 ; j < NUM_COL_FMTS ; j + + ) {
if ( ! cfile . cinfo . fmt_matx [ i ] [ j ] )
continue ;
if ( cfile . cinfo . col_first [ j ] = = - 1 )
cfile . cinfo . col_first [ j ] = i ;
cfile . cinfo . col_last [ j ] = i ;
}
}
2002-01-10 09:51:23 +00:00
# ifdef HAVE_LIBPCAP
2002-02-24 09:25:36 +00:00
if ( capture_opts . snaplen < 1 )
capture_opts . snaplen = WTAP_MAX_PACKET_SIZE ;
else if ( capture_opts . snaplen < MIN_PACKET_SIZE )
capture_opts . snaplen = MIN_PACKET_SIZE ;
2002-08-28 21:04:11 +00:00
2001-12-04 08:26:00 +00:00
/* Check the value range of the ringbuffer_num_files parameter */
2003-07-25 04:11:51 +00:00
if ( capture_opts . ringbuffer_num_files > RINGBUFFER_MAX_NUM_FILES )
2002-02-24 09:25:36 +00:00
capture_opts . ringbuffer_num_files = RINGBUFFER_MAX_NUM_FILES ;
2003-07-25 04:11:51 +00:00
# if RINGBUFFER_MIN_NUM_FILES > 0
else if ( capture_opts . ringbuffer_num_files < RINGBUFFER_MIN_NUM_FILES )
capture_opts . ringbuffer_num_files = RINGBUFFER_MIN_NUM_FILES ;
# endif
2002-01-10 09:51:23 +00:00
# endif
2002-08-28 21:04:11 +00:00
2000-01-22 07:19:34 +00:00
if ( rfilter ! = NULL ) {
2001-02-01 20:21:25 +00:00
if ( ! dfilter_compile ( rfilter , & rfcode ) ) {
2000-01-22 07:19:34 +00:00
fprintf ( stderr , " tethereal: %s \n " , dfilter_error_msg ) ;
2000-09-27 04:55:05 +00:00
epan_cleanup ( ) ;
2003-10-10 21:13:21 +00:00
# ifdef HAVE_PCAP_COMPILE_NOPCAP
if ( pcap_compile_nopcap ( DLT_EN10MB , 0 , & fcode , rfilter , 0 , 0 ) ! = - 1 ) {
2003-10-10 13:33:49 +00:00
fprintf ( stderr ,
2003-10-10 21:13:21 +00:00
" Note: This display filter code looks like a valid capture filter; \n "
2003-10-10 13:33:49 +00:00
" maybe you mixed them up? \n " ) ;
}
2003-10-09 22:29:52 +00:00
# endif
2000-01-22 07:19:34 +00:00
exit ( 2 ) ;
2000-01-14 06:46:00 +00:00
}
2000-01-22 07:19:34 +00:00
}
2000-06-27 04:36:03 +00:00
cfile . rfcode = rfcode ;
2000-01-22 07:19:34 +00:00
if ( cf_name ) {
2003-10-30 19:56:47 +00:00
/*
* We ' re reading a capture file .
*/
# ifndef _WIN32
/*
* Immediately relinquish any set - UID or set - GID privileges we have ;
* we must not be allowed to read any capture files the user running
* Tethereal can ' t open .
*/
setuid ( getuid ( ) ) ;
setgid ( getgid ( ) ) ;
# endif
2003-09-15 22:48:42 +00:00
err = cf_open ( cf_name , FALSE , & cfile ) ;
2000-01-14 06:46:00 +00:00
if ( err ! = 0 ) {
2000-09-27 04:55:05 +00:00
epan_cleanup ( ) ;
2000-01-14 06:46:00 +00:00
exit ( 2 ) ;
}
2000-06-27 04:36:03 +00:00
err = load_cap_file ( & cfile , out_file_type ) ;
2000-01-14 06:46:00 +00:00
if ( err ! = 0 ) {
2000-09-27 04:55:05 +00:00
epan_cleanup ( ) ;
2000-01-14 06:46:00 +00:00
exit ( 2 ) ;
}
cf_name [ 0 ] = ' \0 ' ;
} else {
2003-11-01 02:30:18 +00:00
/* No capture file specified, so we're supposed to do a live capture
( or get a list of link - layer types for a live capture device ) ;
2000-01-15 06:05:21 +00:00
do we have support for live captures ? */
# ifdef HAVE_LIBPCAP
2001-04-03 05:26:27 +00:00
# ifdef _WIN32
if ( ! has_wpcap ) {
fprintf ( stderr , " tethereal: Could not load wpcap.dll. \n " ) ;
exit ( 2 ) ;
}
# endif
2000-01-15 06:05:21 +00:00
/* Yes; did the user specify an interface to use? */
2000-06-27 04:36:03 +00:00
if ( cfile . iface = = NULL ) {
2002-01-10 07:43:39 +00:00
/* No - is a default specified in the preferences file? */
if ( prefs - > capture_device ! = NULL ) {
/* Yes - use it. */
2002-06-27 22:39:16 +00:00
if_text = strrchr ( prefs - > capture_device , ' ' ) ;
if ( if_text = = NULL ) {
cfile . iface = g_strdup ( prefs - > capture_device ) ;
} else {
cfile . iface = g_strdup ( if_text + 1 ) ; /* Skip over space */
}
2002-01-10 07:43:39 +00:00
} else {
/* No - pick the first one from the list of interfaces. */
if_list = get_interface_list ( & err , err_str ) ;
if ( if_list = = NULL ) {
switch ( err ) {
case CANT_GET_INTERFACE_LIST :
fprintf ( stderr , " tethereal: Can't get list of interfaces: %s \n " ,
err_str ) ;
break ;
case NO_INTERFACES_FOUND :
fprintf ( stderr , " tethereal: There are no interfaces on which a capture can be done \n " ) ;
break ;
}
exit ( 2 ) ;
2000-01-16 02:48:12 +00:00
}
2003-09-10 05:35:26 +00:00
if_info = if_list - > data ; /* first interface */
cfile . iface = g_strdup ( if_info - > name ) ;
2002-01-10 07:43:39 +00:00
free_interface_list ( if_list ) ;
2000-01-15 06:05:21 +00:00
}
2000-01-14 14:21:50 +00:00
}
2003-11-01 02:30:18 +00:00
if ( list_link_layer_types ) {
/* We were asked to list the link-layer types for an interface.
Get the list of link - layer types for the capture device . */
lt_list = get_pcap_linktype_list ( cfile . iface , err_str ) ;
if ( lt_list = = NULL ) {
if ( err_str [ 0 ] ! = ' \0 ' ) {
fprintf ( stderr , " tethereal: The list of data link types for the capture device could not be obtained (%s). \n "
" Please check to make sure you have sufficient permissions, and that \n "
" you have the proper interface or pipe specified. \n " , err_str ) ;
} else
fprintf ( stderr , " tethereal: The capture device has no data link types. \n " ) ;
exit ( 2 ) ;
}
fprintf ( stderr , " Data link types (use option -y to set): \n " ) ;
for ( lt_entry = lt_list ; lt_entry ! = NULL ;
lt_entry = g_list_next ( lt_entry ) ) {
data_link_info = lt_entry - > data ;
fprintf ( stderr , " %s " , data_link_info - > name ) ;
if ( data_link_info - > description ! = NULL )
fprintf ( stderr , " (%s) " , data_link_info - > description ) ;
else
fprintf ( stderr , " (not supported) " ) ;
putchar ( ' \n ' ) ;
}
free_pcap_linktype_list ( lt_list ) ;
exit ( 0 ) ;
}
2002-06-23 21:58:02 +00:00
capture ( out_file_type ) ;
2001-12-04 08:26:00 +00:00
2002-02-24 09:25:36 +00:00
if ( capture_opts . ringbuffer_on ) {
2001-12-04 08:26:00 +00:00
ringbuf_free ( ) ;
}
2000-01-15 06:05:21 +00:00
# else
/* No - complain. */
fprintf ( stderr , " This version of Tethereal was not built with support for capturing packets. \n " ) ;
exit ( 2 ) ;
2000-01-14 06:46:00 +00:00
# endif
}
2002-09-04 09:40:29 +00:00
draw_tap_listeners ( TRUE ) ;
2000-09-27 04:55:05 +00:00
epan_cleanup ( ) ;
2000-01-14 06:46:00 +00:00
2001-04-20 21:50:06 +00:00
return 0 ;
2000-01-14 06:46:00 +00:00
}
# ifdef HAVE_LIBPCAP
/* Do the low-level work of a capture.
Returns TRUE if it succeeds , FALSE otherwise . */
2003-09-25 00:08:58 +00:00
static condition * volatile cnd_ring_timeout = NULL ; /* this must be visible in wtap_dispatch_cb_write */
2000-01-14 06:46:00 +00:00
static int
2002-06-23 21:58:02 +00:00
capture ( int out_file_type )
2000-01-14 06:46:00 +00:00
{
2002-12-29 22:40:10 +00:00
int pcap_encap ;
int file_snaplen ;
2001-10-25 06:41:48 +00:00
gchar open_err_str [ PCAP_ERRBUF_SIZE ] ;
gchar lookup_net_err_str [ PCAP_ERRBUF_SIZE ] ;
2000-01-14 06:46:00 +00:00
bpf_u_int32 netnum , netmask ;
2001-01-28 23:56:29 +00:00
struct bpf_program fcode ;
2003-11-01 02:30:18 +00:00
const char * set_linktype_err_str ;
2000-01-14 06:46:00 +00:00
void ( * oldhandler ) ( int ) ;
2002-06-23 20:30:01 +00:00
int err = 0 ;
2002-07-16 07:15:09 +00:00
int volatile volatile_err = 0 ;
int volatile inpkts = 0 ;
2002-06-30 20:26:45 +00:00
int pcap_cnt ;
2000-01-14 06:46:00 +00:00
char errmsg [ 1024 + 1 ] ;
"autostop_filesize" and "autostop_duration" don't need to be in the
"capture_file" structure - they're a property of an in-progress capture,
not a property of an open capture file. Make them just variables.
The maximum number of packets to be captured should be a variable
separate from the "count" field in the "capture_file" structure - the
latter is a count of the packets in the capture file in question.
Have Boolean variables indicating whether a maximum packet count,
maximum capture file size, and maximum capture duration were specified.
If an option isn't set, and we're doing an "update list of packets in
real time" capture, don't pass the option to the child process with a
command-line argument.
Don't create "stop when the capture file reaches this size" or "stop
when the capture's run for this long" conditions if a maximum capture
file size or a maximum capture duration, respectively, haven't been
specified. Don't test or free a condition if it wasn't created.
Don't allow a 0 argument to the "-c" flag - the absence of a "-c" flag
is the way you specify "no limit on the number of packets".
Initialize the check boxes and spin buttons for the "maximum packets to
capture", "maximum capture size", and "maximum capture duration" options
to the values they had in the last capture. If an option wasn't
specified, don't read its value from the dialog box and set the
variable.
svn path=/trunk/; revision=4795
2002-02-24 03:33:05 +00:00
condition * volatile cnd_stop_capturesize = NULL ;
condition * volatile cnd_stop_timeout = NULL ;
On Win32, if the attempt to open the capture device fails, don't talk
about checking permissions, as the capture devices are probably
available to all users, and talking about permissions will only confuse
the user. Do, however, warn that Ethereal can't capture on Token Ring
or PPP/WAN interfaces.
On UNIX, if the attempt to open the capture device fails, and the error
message starts with "can't find PPA for ", they are probably running on
HP-UX with a version of libpcap not patched to properly look up PPAs for
network interfaces given the interface name; give them a detailed
warning about this, telling them that they'll have to fix libpcap and
build Ethereal from source, and pointing them at the "README.hpux" file.
svn path=/trunk/; revision=2265
2000-08-13 08:17:03 +00:00
# ifndef _WIN32
static const char ppamsg [ ] = " can't find PPA for " ;
char * libpcap_warn ;
2002-12-29 22:40:10 +00:00
volatile int pipe_fd = - 1 ;
struct pcap_hdr hdr ;
struct pcaprec_modified_hdr rechdr ;
guchar pcap_data [ WTAP_MAX_PACKET_SIZE ] ;
On Win32, if the attempt to open the capture device fails, don't talk
about checking permissions, as the capture devices are probably
available to all users, and talking about permissions will only confuse
the user. Do, however, warn that Ethereal can't capture on Token Ring
or PPP/WAN interfaces.
On UNIX, if the attempt to open the capture device fails, and the error
message starts with "can't find PPA for ", they are probably running on
HP-UX with a version of libpcap not patched to properly look up PPAs for
network interfaces given the interface name; give them a detailed
warning about this, telling them that they'll have to fix libpcap and
build Ethereal from source, and pointing them at the "README.hpux" file.
svn path=/trunk/; revision=2265
2000-08-13 08:17:03 +00:00
# endif
2001-02-11 09:28:17 +00:00
struct pcap_stat stats ;
2002-07-16 07:15:09 +00:00
gboolean write_err ;
2001-12-04 08:26:00 +00:00
gboolean dump_ok ;
2003-10-09 22:29:52 +00:00
dfilter_t * rfcode = NULL ;
2002-02-24 06:45:14 +00:00
/* Initialize all data structures used for dissection. */
init_dissection ( ) ;
2001-06-08 06:27:16 +00:00
2000-01-14 06:46:00 +00:00
ld . linktype = WTAP_ENCAP_UNKNOWN ;
ld . pdh = NULL ;
2001-10-25 06:41:48 +00:00
/* Open the network interface to capture from it.
Some versions of libpcap may put warnings into the error buffer
if they succeed ; to tell if that ' s happened , we have to clear
the error buffer , and check if it ' s still a null string . */
open_err_str [ 0 ] = ' \0 ' ;
2002-02-24 09:25:36 +00:00
ld . pch = pcap_open_live ( cfile . iface , capture_opts . snaplen ,
capture_opts . promisc_mode , 1000 , open_err_str ) ;
2000-01-14 06:46:00 +00:00
2003-11-01 02:30:18 +00:00
if ( ld . pch ! = NULL ) {
/* setting the data link type only works on real interfaces */
if ( capture_opts . linktype ! = - 1 ) {
set_linktype_err_str = set_pcap_linktype ( ld . pch , cfile . iface ,
capture_opts . linktype ) ;
if ( set_linktype_err_str ! = NULL ) {
snprintf ( errmsg , sizeof errmsg , " Unable to set data link type (%s). " ,
set_linktype_err_str ) ;
goto error ;
}
}
} else {
2002-12-31 21:18:05 +00:00
/* We couldn't open "cfile.iface" as a network device. */
On Win32, if the attempt to open the capture device fails, don't talk
about checking permissions, as the capture devices are probably
available to all users, and talking about permissions will only confuse
the user. Do, however, warn that Ethereal can't capture on Token Ring
or PPP/WAN interfaces.
On UNIX, if the attempt to open the capture device fails, and the error
message starts with "can't find PPA for ", they are probably running on
HP-UX with a version of libpcap not patched to properly look up PPAs for
network interfaces given the interface name; give them a detailed
warning about this, telling them that they'll have to fix libpcap and
build Ethereal from source, and pointing them at the "README.hpux" file.
svn path=/trunk/; revision=2265
2000-08-13 08:17:03 +00:00
# ifdef _WIN32
2002-12-31 21:18:05 +00:00
/* On Windows, we don't support capturing on pipes, so we give up. */
On Win32, if the attempt to open the capture device fails, don't talk
about checking permissions, as the capture devices are probably
available to all users, and talking about permissions will only confuse
the user. Do, however, warn that Ethereal can't capture on Token Ring
or PPP/WAN interfaces.
On UNIX, if the attempt to open the capture device fails, and the error
message starts with "can't find PPA for ", they are probably running on
HP-UX with a version of libpcap not patched to properly look up PPAs for
network interfaces given the interface name; give them a detailed
warning about this, telling them that they'll have to fix libpcap and
build Ethereal from source, and pointing them at the "README.hpux" file.
svn path=/trunk/; revision=2265
2000-08-13 08:17:03 +00:00
/* On Win32 OSes, the capture devices are probably available to all
users ; don ' t warn about permissions problems .
2002-12-31 21:18:05 +00:00
Do , however , warn that WAN devices aren ' t supported . */
On Win32, if the attempt to open the capture device fails, don't talk
about checking permissions, as the capture devices are probably
available to all users, and talking about permissions will only confuse
the user. Do, however, warn that Ethereal can't capture on Token Ring
or PPP/WAN interfaces.
On UNIX, if the attempt to open the capture device fails, and the error
message starts with "can't find PPA for ", they are probably running on
HP-UX with a version of libpcap not patched to properly look up PPAs for
network interfaces given the interface name; give them a detailed
warning about this, telling them that they'll have to fix libpcap and
build Ethereal from source, and pointing them at the "README.hpux" file.
svn path=/trunk/; revision=2265
2000-08-13 08:17:03 +00:00
snprintf ( errmsg , sizeof errmsg ,
" The capture session could not be initiated (%s). \n "
" Please check that you have the proper interface specified. \n "
" \n "
2003-01-01 03:51:02 +00:00
" Note that the driver Tethereal uses for packet capture on Windows doesn't \n "
" support capturing on PPP/WAN interfaces in Windows NT/2000/XP/.NET Server. \n " ,
2001-10-25 06:41:48 +00:00
open_err_str ) ;
2002-12-31 21:18:05 +00:00
goto error ;
On Win32, if the attempt to open the capture device fails, don't talk
about checking permissions, as the capture devices are probably
available to all users, and talking about permissions will only confuse
the user. Do, however, warn that Ethereal can't capture on Token Ring
or PPP/WAN interfaces.
On UNIX, if the attempt to open the capture device fails, and the error
message starts with "can't find PPA for ", they are probably running on
HP-UX with a version of libpcap not patched to properly look up PPAs for
network interfaces given the interface name; give them a detailed
warning about this, telling them that they'll have to fix libpcap and
build Ethereal from source, and pointing them at the "README.hpux" file.
svn path=/trunk/; revision=2265
2000-08-13 08:17:03 +00:00
# else
2002-12-29 22:40:10 +00:00
/* try to open cfile.iface as a pipe */
pipe_fd = pipe_open_live ( cfile . iface , & hdr , & ld , errmsg , sizeof errmsg ) ;
if ( pipe_fd = = - 1 ) {
if ( ld . pipe_err = = PIPNEXIST ) {
2002-12-31 21:18:05 +00:00
/* Pipe doesn't exist, so output message for interface */
/* If we got a "can't find PPA for XXX" message, warn the user (who
is running Tethereal on HP - UX ) that they don ' t have a version
of libpcap that properly handles HP - UX ( libpcap 0.6 . x and later
versions , which properly handle HP - UX , say " can't find /dev/dlpi
PPA for XXX " rather than " can ' t find PPA for XXX " ). */
if ( strncmp ( open_err_str , ppamsg , sizeof ppamsg - 1 ) = = 0 )
libpcap_warn =
" \n \n "
" You are running Tethereal with a version of the libpcap library \n "
" that doesn't handle HP-UX network devices well; this means that \n "
" Tethereal may not be able to capture packets. \n "
" \n "
" To fix this, you should install libpcap 0.6.2, or a later version \n "
" of libpcap, rather than libpcap 0.4 or 0.5.x. It is available in \n "
" packaged binary form from the Software Porting And Archive Centre \n "
" for HP-UX; the Centre is at http://hpux.connect.org.uk/ - the page \n "
" at the URL lists a number of mirror sites. " ;
else
libpcap_warn = " " ;
snprintf ( errmsg , sizeof errmsg ,
" The capture session could not be initiated (%s). \n "
" Please check to make sure you have sufficient permissions, and that \n "
" you have the proper interface or pipe specified.%s " , open_err_str ,
libpcap_warn ) ;
2002-12-29 22:40:10 +00:00
}
/*
* Else pipe ( or file ) does exist and pipe_open_live ( ) has
* filled in errmsg
*/
goto error ;
} else
/* pipe_open_live() succeeded; don't want
error message from pcap_open_live ( ) */
open_err_str [ 0 ] = ' \0 ' ;
2002-12-31 21:18:05 +00:00
# endif
2000-01-14 06:46:00 +00:00
}
2003-10-30 19:56:47 +00:00
# ifndef _WIN32
/*
* We ' ve opened the capture device , so , if we ' re set - UID or set - GID ,
* relinquish those privileges .
*
* XXX - if we have saved set - user - ID support , we should give up those
* privileges immediately , and then reclaim them long enough to get
* a list of network interfaces and to open one , and then give them
* up again , so that stuff we do while processing the argument list ,
* reading the user ' s preferences , etc . is done as the real user and
* group , not the effective user and group .
*/
setuid ( getuid ( ) ) ;
setgid ( getgid ( ) ) ;
# endif
2002-12-29 22:40:10 +00:00
if ( cfile . cfilter & & ! ld . from_pipe ) {
2000-01-14 06:46:00 +00:00
/* A capture filter was specified; set it up. */
2001-10-25 06:41:48 +00:00
if ( pcap_lookupnet ( cfile . iface , & netnum , & netmask , lookup_net_err_str ) < 0 ) {
2000-11-01 07:38:54 +00:00
/*
* Well , we can ' t get the netmask for this interface ; it ' s used
* only for filters that check for broadcast IP addresses , so
* we just warn the user , and punt and use 0.
*/
2002-08-28 21:04:11 +00:00
fprintf ( stderr ,
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
" Warning: Couldn't obtain netmask info (%s). \n " , lookup_net_err_str ) ;
2000-11-01 07:38:54 +00:00
netmask = 0 ;
2000-01-14 06:46:00 +00:00
}
2001-01-28 23:56:29 +00:00
if ( pcap_compile ( ld . pch , & fcode , cfile . cfilter , 1 , netmask ) < 0 ) {
2003-10-09 22:29:52 +00:00
if ( dfilter_compile ( cfile . cfilter , & rfcode ) ) {
snprintf ( errmsg , sizeof errmsg ,
" Unable to parse capture filter string (%s). \n "
" Interestingly enough, this looks like a valid display filter \n "
" Are you sure you didn't mix them up? " ,
pcap_geterr ( ld . pch ) ) ;
} else {
snprintf ( errmsg , sizeof errmsg ,
" Unable to parse capture filter string (%s). " ,
pcap_geterr ( ld . pch ) ) ;
}
2000-01-14 06:46:00 +00:00
goto error ;
}
2001-01-28 23:56:29 +00:00
if ( pcap_setfilter ( ld . pch , & fcode ) < 0 ) {
2000-01-14 06:46:00 +00:00
snprintf ( errmsg , sizeof errmsg , " Can't install filter (%s). " ,
pcap_geterr ( ld . pch ) ) ;
goto error ;
}
}
2002-12-29 22:40:10 +00:00
/* Set up to write to the capture file. */
# ifndef _WIN32
if ( ld . from_pipe ) {
pcap_encap = hdr . network ;
file_snaplen = hdr . snaplen ;
} else
# endif
{
pcap_encap = get_pcap_linktype ( ld . pch , cfile . iface ) ;
file_snaplen = pcap_snapshot ( ld . pch ) ;
}
ld . linktype = wtap_pcap_encap_to_wtap_encap ( pcap_encap ) ;
2000-06-27 04:36:03 +00:00
if ( cfile . save_file ! = NULL ) {
2000-01-14 06:46:00 +00:00
/* Set up to write to the capture file. */
if ( ld . linktype = = WTAP_ENCAP_UNKNOWN ) {
strcpy ( errmsg , " The network you're capturing from is of a type "
2000-02-11 06:53:31 +00:00
" that Tethereal doesn't support. " ) ;
2000-01-14 06:46:00 +00:00
goto error ;
}
2002-02-24 09:25:36 +00:00
if ( capture_opts . ringbuffer_on ) {
2001-12-04 08:26:00 +00:00
cfile . save_file_fd = ringbuf_init ( cfile . save_file ,
2002-02-24 09:25:36 +00:00
capture_opts . ringbuffer_num_files ) ;
2001-12-04 08:26:00 +00:00
if ( cfile . save_file_fd ! = - 1 ) {
ld . pdh = ringbuf_init_wtap_dump_fdopen ( out_file_type , ld . linktype ,
pcap_snapshot ( ld . pch ) , & err ) ;
} else {
2002-07-16 07:15:09 +00:00
err = errno ; /* "ringbuf_init()" failed */
2001-12-04 08:26:00 +00:00
ld . pdh = NULL ;
}
} else {
ld . pdh = wtap_dump_open ( cfile . save_file , out_file_type ,
ld . linktype , pcap_snapshot ( ld . pch ) , & err ) ;
}
2000-01-14 06:46:00 +00:00
if ( ld . pdh = = NULL ) {
2002-07-16 07:15:09 +00:00
snprintf ( errmsg , sizeof errmsg ,
file_open_error_message ( err , TRUE , out_file_type ) ,
* cfile . save_file = = ' \0 ' ? " stdout " : cfile . save_file ) ;
2000-01-14 06:46:00 +00:00
goto error ;
}
}
2001-10-25 06:41:48 +00:00
/* Does "open_err_str" contain a non-empty string? If so, "pcap_open_live()"
returned a warning ; print it , but keep capturing . */
if ( open_err_str [ 0 ] ! = ' \0 ' )
fprintf ( stderr , " tethereal: WARNING: %s. \n " , open_err_str ) ;
2002-06-28 09:47:36 +00:00
# ifdef _WIN32
/* Catch a CTRL+C event and, if we get it, clean up and exit. */
SetConsoleCtrlHandler ( capture_cleanup , TRUE ) ;
# else /* _WIN32 */
2000-01-14 06:46:00 +00:00
/* Catch SIGINT and SIGTERM and, if we get either of them, clean up
and exit .
2002-06-28 09:47:36 +00:00
XXX - deal with signal semantics on various UNIX platforms . Or just
2000-01-14 06:46:00 +00:00
use " sigaction() " and be done with it ? */
signal ( SIGTERM , capture_cleanup ) ;
signal ( SIGINT , capture_cleanup ) ;
if ( ( oldhandler = signal ( SIGHUP , capture_cleanup ) ) ! = SIG_DFL )
signal ( SIGHUP , oldhandler ) ;
2002-11-09 00:08:44 +00:00
# ifdef SIGINFO
/* Catch SIGINFO and, if we get it and we're capturing to a file in
quiet mode , report the number of packets we ' ve captured . */
signal ( SIGINFO , report_counts_siginfo ) ;
# endif /* SIGINFO */
2002-06-28 09:47:36 +00:00
# endif /* _WIN32 */
2000-01-15 10:23:10 +00:00
/* Let the user know what interface was chosen. */
2001-02-11 21:29:03 +00:00
fprintf ( stderr , " Capturing on %s \n " , cfile . iface ) ;
2000-01-15 10:23:10 +00:00
2002-08-28 21:04:11 +00:00
/* initialize capture stop conditions */
2001-12-04 07:32:05 +00:00
init_capture_stop_conditions ( ) ;
2001-12-21 19:58:30 +00:00
/* create stop conditions */
2002-02-24 09:25:36 +00:00
if ( capture_opts . has_autostop_filesize )
2002-12-02 23:43:30 +00:00
cnd_stop_capturesize = cnd_new ( ( const char * ) CND_CLASS_CAPTURESIZE ,
2002-02-24 09:25:36 +00:00
( long ) capture_opts . autostop_filesize * 1000 ) ;
if ( capture_opts . has_autostop_duration )
2002-12-02 23:43:30 +00:00
cnd_stop_timeout = cnd_new ( ( const char * ) CND_CLASS_TIMEOUT ,
2002-02-24 09:25:36 +00:00
( gint32 ) capture_opts . autostop_duration ) ;
2001-12-04 07:32:05 +00:00
2003-05-15 13:40:20 +00:00
if ( capture_opts . ringbuffer_on & & capture_opts . has_ring_duration )
cnd_ring_timeout = cnd_new ( CND_CLASS_TIMEOUT ,
capture_opts . ringbuffer_duration ) ;
2002-10-31 20:24:41 +00:00
if ( ! setjmp ( ld . stopenv ) ) {
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
ld . go = TRUE ;
2002-10-31 20:24:41 +00:00
ld . packet_count = 0 ;
} else
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
ld . go = FALSE ;
2001-12-04 07:32:05 +00:00
while ( ld . go ) {
2002-07-16 07:15:09 +00:00
/* We need to be careful with automatic variables defined in the
outer scope which are changed inside the loop . Most compilers
don ' t try to roll them back to their original values after the
longjmp which causes the loop to finish , but all that the
standards say is that their values are indeterminate . If we
don ' t want them to be rolled back , we should define them with the
volatile attribute ( paraphrasing W . Richard Stevens , Advanced
Programming in the UNIX Environment , p . 178 ) .
The " err " variable causes a particular problem . If we give it
the volatile attribute , then when we pass a reference to it ( as
in " &err " ) to a function , GCC warns : " passing arg <n> of
< function > discards qualifiers from pointer target type " .
Therefore within the loop and just beyond we don ' t use " err " .
Within the loop we define " loop_err " , and assign its value to
" volatile_err " , which is in the outer scope and is checked when
the loop finishes .
We also define " packet_count_prev " here to keep things tidy ,
since it ' s used only inside the loop . If it were defined in the
outer scope , GCC would give a warning ( unnecessary in this case )
that it might be clobbered , and we ' d need to give it the volatile
attribute to suppress the warning . */
int loop_err = 0 ;
int packet_count_prev = 0 ;
2002-06-30 20:26:45 +00:00
if ( cnd_stop_capturesize = = NULL & & cnd_stop_timeout = = NULL ) {
/* We're not stopping at a particular capture file size, and we're
not stopping after some particular amount of time has expired ,
so either we have no stop condition or the only stop condition
is a maximum packet count .
If there ' s no maximum packet count , pass it - 1 , meaning " until
you run out of packets in the bufferful you read " . Otherwise,
pass it the number of packets we have left to capture .
We don ' t call " pcap_loop() " as , if we ' re saving to a file that ' s
a FIFO , we want to flush the FIFO after we ' re done processing
this libpcap bufferful of packets , so that the program
reading the FIFO sees the packets immediately and doesn ' t get
any partial packet , forcing it to block in the middle of reading
that packet . */
if ( capture_opts . autostop_count = = 0 )
pcap_cnt = - 1 ;
else {
if ( ld . packet_count > = capture_opts . autostop_count ) {
2002-07-16 07:15:09 +00:00
/* XXX do we need this test here? */
2002-06-30 20:26:45 +00:00
/* It appears there's nothing more to capture. */
break ;
}
pcap_cnt = capture_opts . autostop_count - ld . packet_count ;
}
} else {
/* We need to check the capture file size or the timeout after
each packet . */
pcap_cnt = 1 ;
}
2002-12-29 22:40:10 +00:00
# ifndef _WIN32
if ( ld . from_pipe ) {
inpkts = pipe_dispatch ( pipe_fd , & ld , & hdr , & rechdr , pcap_data ,
errmsg , sizeof errmsg ) ;
} else
# endif
inpkts = pcap_dispatch ( ld . pch , pcap_cnt , capture_pcap_cb , ( guchar * ) & ld ) ;
2002-06-23 21:58:02 +00:00
if ( inpkts < 0 ) {
2002-12-29 22:40:10 +00:00
/* Error from "pcap_dispatch()", or error or "no more packets" from
" pipe_dispatch(). */
2002-06-23 21:58:02 +00:00
ld . go = FALSE ;
"autostop_filesize" and "autostop_duration" don't need to be in the
"capture_file" structure - they're a property of an in-progress capture,
not a property of an open capture file. Make them just variables.
The maximum number of packets to be captured should be a variable
separate from the "count" field in the "capture_file" structure - the
latter is a count of the packets in the capture file in question.
Have Boolean variables indicating whether a maximum packet count,
maximum capture file size, and maximum capture duration were specified.
If an option isn't set, and we're doing an "update list of packets in
real time" capture, don't pass the option to the child process with a
command-line argument.
Don't create "stop when the capture file reaches this size" or "stop
when the capture's run for this long" conditions if a maximum capture
file size or a maximum capture duration, respectively, haven't been
specified. Don't test or free a condition if it wasn't created.
Don't allow a 0 argument to the "-c" flag - the absence of a "-c" flag
is the way you specify "no limit on the number of packets".
Initialize the check boxes and spin buttons for the "maximum packets to
capture", "maximum capture size", and "maximum capture duration" options
to the values they had in the last capture. If an option wasn't
specified, don't read its value from the dialog box and set the
variable.
svn path=/trunk/; revision=4795
2002-02-24 03:33:05 +00:00
} else if ( cnd_stop_timeout ! = NULL & & cnd_eval ( cnd_stop_timeout ) ) {
2001-12-21 19:51:03 +00:00
/* The specified capture time has elapsed; stop the capture. */
2001-12-04 07:32:05 +00:00
ld . go = FALSE ;
2002-07-16 07:15:09 +00:00
} else if ( inpkts > 0 ) {
if ( capture_opts . autostop_count ! = 0 & &
ld . packet_count > = capture_opts . autostop_count ) {
/* The specified number of packets have been captured and have
passed both any capture filter in effect and any read filter
in effect . */
ld . go = FALSE ;
} else if ( cnd_stop_capturesize ! = NULL & &
2002-08-28 21:04:11 +00:00
cnd_eval ( cnd_stop_capturesize ,
2002-07-16 07:15:09 +00:00
( guint32 ) wtap_get_bytes_dumped ( ld . pdh ) ) ) {
/* We're saving the capture to a file, and the capture file reached
its maximum size . */
if ( capture_opts . ringbuffer_on ) {
/* Switch to the next ringbuffer file */
if ( ringbuf_switch_file ( & cfile , & ld . pdh , & loop_err ) ) {
/* File switch succeeded: reset the condition */
cnd_reset ( cnd_stop_capturesize ) ;
2003-05-15 13:40:20 +00:00
if ( cnd_ring_timeout ) {
cnd_reset ( cnd_ring_timeout ) ;
}
2002-07-16 07:15:09 +00:00
} else {
/* File switch failed: stop here */
volatile_err = loop_err ;
ld . go = FALSE ;
}
2001-12-04 08:26:00 +00:00
} else {
2002-07-16 07:15:09 +00:00
/* No ringbuffer - just stop. */
2001-12-04 08:26:00 +00:00
ld . go = FALSE ;
}
}
2002-07-16 07:15:09 +00:00
if ( ld . output_to_pipe ) {
if ( ld . packet_count > packet_count_prev ) {
if ( fflush ( wtap_dump_file ( ld . pdh ) ) ) {
volatile_err = errno ;
ld . go = FALSE ;
}
packet_count_prev = ld . packet_count ;
}
2002-06-30 20:26:45 +00:00
}
2002-07-16 07:15:09 +00:00
} /* inpkts > 0 */
} /* while (ld.go) */
2002-08-28 21:04:11 +00:00
2001-12-04 07:32:05 +00:00
/* delete stop conditions */
"autostop_filesize" and "autostop_duration" don't need to be in the
"capture_file" structure - they're a property of an in-progress capture,
not a property of an open capture file. Make them just variables.
The maximum number of packets to be captured should be a variable
separate from the "count" field in the "capture_file" structure - the
latter is a count of the packets in the capture file in question.
Have Boolean variables indicating whether a maximum packet count,
maximum capture file size, and maximum capture duration were specified.
If an option isn't set, and we're doing an "update list of packets in
real time" capture, don't pass the option to the child process with a
command-line argument.
Don't create "stop when the capture file reaches this size" or "stop
when the capture's run for this long" conditions if a maximum capture
file size or a maximum capture duration, respectively, haven't been
specified. Don't test or free a condition if it wasn't created.
Don't allow a 0 argument to the "-c" flag - the absence of a "-c" flag
is the way you specify "no limit on the number of packets".
Initialize the check boxes and spin buttons for the "maximum packets to
capture", "maximum capture size", and "maximum capture duration" options
to the values they had in the last capture. If an option wasn't
specified, don't read its value from the dialog box and set the
variable.
svn path=/trunk/; revision=4795
2002-02-24 03:33:05 +00:00
if ( cnd_stop_capturesize ! = NULL )
cnd_delete ( cnd_stop_capturesize ) ;
if ( cnd_stop_timeout ! = NULL )
cnd_delete ( cnd_stop_timeout ) ;
2003-05-15 13:40:20 +00:00
if ( cnd_ring_timeout ! = NULL )
cnd_delete ( cnd_ring_timeout ) ;
2000-01-14 06:46:00 +00:00
2002-03-22 23:42:27 +00:00
if ( ( cfile . save_file ! = NULL ) & & ! quiet ) {
2001-02-11 09:28:17 +00:00
/* We're saving to a file, which means we're printing packet counts
2002-07-16 07:15:09 +00:00
to stderr if we are not running silent and deep .
2002-03-22 23:42:27 +00:00
Send a newline so that we move to the line after the packet count . */
2001-02-11 21:29:03 +00:00
fprintf ( stderr , " \n " ) ;
}
/* If we got an error while capturing, report it. */
if ( inpkts < 0 ) {
2002-12-31 22:42:45 +00:00
# ifndef _WIN32
2002-12-29 22:40:10 +00:00
if ( ld . from_pipe ) {
if ( ld . pipe_err = = PIPERR ) {
fprintf ( stderr , " tethereal: Error while capturing packets: %s \n " ,
errmsg ) ;
}
2002-12-31 22:42:45 +00:00
} else
# endif
{
2002-12-29 22:40:10 +00:00
fprintf ( stderr , " tethereal: Error while capturing packets: %s \n " ,
pcap_geterr ( ld . pch ) ) ;
}
2000-07-24 16:27:34 +00:00
}
2002-07-16 07:15:09 +00:00
if ( volatile_err = = 0 )
write_err = FALSE ;
else {
show_capture_file_io_error ( cfile . save_file , volatile_err , FALSE ) ;
2002-06-23 20:30:01 +00:00
write_err = TRUE ;
}
if ( cfile . save_file ! = NULL ) {
/* We're saving to a file or files; close all files. */
if ( capture_opts . ringbuffer_on ) {
dump_ok = ringbuf_wtap_dump_close ( & cfile , & err ) ;
} else {
dump_ok = wtap_dump_close ( ld . pdh , & err ) ;
}
2002-07-16 07:15:09 +00:00
/* If we've displayed a message about a write error, there's no point
in displaying another message about an error on close . */
if ( ! dump_ok & & ! write_err )
2002-06-23 20:30:01 +00:00
show_capture_file_io_error ( cfile . save_file , err , TRUE ) ;
}
2002-12-29 22:40:10 +00:00
# ifndef _WIN32
if ( ld . from_pipe & & pipe_fd > = 0 )
close ( pipe_fd ) ;
else
# endif
{
/* Get the capture statistics, and, if any packets were dropped, report
that . */
if ( pcap_stats ( ld . pch , & stats ) > = 0 ) {
if ( stats . ps_drop ! = 0 ) {
fprintf ( stderr , " %u packets dropped \n " , stats . ps_drop ) ;
}
} else {
fprintf ( stderr , " tethereal: Can't get packet-drop statistics: %s \n " ,
pcap_geterr ( ld . pch ) ) ;
2001-02-11 21:29:03 +00:00
}
2002-12-29 22:40:10 +00:00
pcap_close ( ld . pch ) ;
2001-02-11 21:29:03 +00:00
}
2002-12-29 22:40:10 +00:00
2002-06-23 21:58:02 +00:00
/* Report the number of captured packets if not reported during capture
and we are saving to a file . */
2002-11-09 00:08:44 +00:00
report_counts ( ) ;
2001-12-04 07:32:05 +00:00
2000-01-14 06:46:00 +00:00
return TRUE ;
error :
2002-02-24 09:25:36 +00:00
if ( capture_opts . ringbuffer_on ) {
2001-12-04 08:26:00 +00:00
ringbuf_error_cleanup ( ) ;
}
2000-06-27 04:36:03 +00:00
g_free ( cfile . save_file ) ;
cfile . save_file = NULL ;
2000-01-14 06:46:00 +00:00
fprintf ( stderr , " tethereal: %s \n " , errmsg ) ;
2002-12-31 21:18:05 +00:00
# ifndef _WIN32
2002-12-29 22:40:10 +00:00
if ( ld . from_pipe ) {
if ( pipe_fd > = 0 )
close ( pipe_fd ) ;
} else
# endif
{
2000-01-14 06:46:00 +00:00
if ( ld . pch ! = NULL )
pcap_close ( ld . pch ) ;
2002-12-29 22:40:10 +00:00
}
2000-01-14 06:46:00 +00:00
return FALSE ;
}
static void
2002-08-02 23:36:07 +00:00
capture_pcap_cb ( guchar * user , const struct pcap_pkthdr * phdr ,
const guchar * pd )
2000-01-14 06:46:00 +00:00
{
struct wtap_pkthdr whdr ;
2002-06-07 21:11:24 +00:00
union wtap_pseudo_header pseudo_header ;
2000-01-14 06:46:00 +00:00
loop_data * ld = ( loop_data * ) user ;
2000-01-22 07:19:34 +00:00
cb_args_t args ;
2002-06-07 21:11:24 +00:00
int err ;
/* Convert from libpcap to Wiretap format.
2002-07-16 07:15:09 +00:00
If that fails , ignore the packet ( wtap_process_pcap_packet has
written an error message ) . */
2002-06-07 21:11:24 +00:00
pd = wtap_process_pcap_packet ( ld - > linktype , phdr , pd , & pseudo_header ,
& whdr , & err ) ;
if ( pd = = NULL ) {
return ;
}
2000-01-14 06:46:00 +00:00
2000-06-27 04:36:03 +00:00
args . cf = & cfile ;
2000-01-22 07:19:34 +00:00
args . pdh = ld - > pdh ;
2000-01-14 06:46:00 +00:00
if ( ld - > pdh ) {
2002-08-02 23:36:07 +00:00
wtap_dispatch_cb_write ( ( guchar * ) & args , & whdr , 0 , & pseudo_header , pd ) ;
2002-06-23 21:33:09 +00:00
/* Report packet capture count if not quiet */
2002-03-22 23:42:27 +00:00
if ( ! quiet ) {
2002-08-20 20:49:31 +00:00
if ( ! decode ) {
if ( ld - > packet_count ! = 0 ) {
fprintf ( stderr , " \r %u " , ld - > packet_count ) ;
/* stderr could be line buffered */
fflush ( stderr ) ;
}
} else {
wtap_dispatch_cb_print ( ( guchar * ) & args , & whdr , 0 ,
& pseudo_header , pd ) ;
2002-06-23 21:58:02 +00:00
}
2002-03-22 23:42:27 +00:00
}
2000-01-14 06:46:00 +00:00
} else {
2002-08-02 23:36:07 +00:00
wtap_dispatch_cb_print ( ( guchar * ) & args , & whdr , 0 , & pseudo_header , pd ) ;
2000-01-14 06:46:00 +00:00
}
}
2002-06-28 09:47:36 +00:00
# ifdef _WIN32
static BOOL WINAPI
capture_cleanup ( DWORD ctrltype _U_ )
{
/* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
Windows , CTRL_CLOSE_EVENT is sort of like SIGHUP , CTRL_LOGOFF_EVENT
is also sort of like SIGHUP , and CTRL_SHUTDOWN_EVENT is sort of
like SIGTERM at least when the machine ' s shutting down .
For now , we handle them all as indications that we should clean up
and quit , just as we handle SIGINT , SIGHUP , and SIGTERM in that
way on UNIX .
However , as handlers run in a new thread , we can ' t just longjmp
out ; we have to set " ld.go " to FALSE , and must return TRUE so that
no other handler - such as one that would terminate the process -
gets called .
XXX - for some reason , typing ^ C to Tethereal , if you run this in
a Cygwin console window in at least some versions of Cygwin ,
causes Tethereal to terminate immediately ; this routine gets
called , but the main loop doesn ' t get a chance to run and
exit cleanly , at least if this is compiled with Microsoft Visual
C + + ( i . e . , it ' s a property of the Cygwin console window or Bash ;
it happens if Tethereal is not built with Cygwin - for all I know ,
building it with Cygwin may make the problem go away ) . */
ld . go = FALSE ;
return TRUE ;
}
# else
2000-01-14 06:46:00 +00:00
static void
2002-03-31 20:57:02 +00:00
capture_cleanup ( int signum _U_ )
2000-01-14 06:46:00 +00:00
{
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
/* Longjmp back to the starting point; "pcap_dispatch()", on many
2002-06-28 09:47:36 +00:00
UNIX platforms , just keeps looping if it gets EINTR , so if we set
Make the "go" member of the "loop_data" structure in Ethereal a
"gboolean", as it's a Boolean value, and move it to the beginning of the
structure in Tethereal, as it is in Ethereal.
From Graeme Hewson:
Check for "pcap_dispatch()" returning -1, meaning an error
occurred; if it does, stop capturing, and report the error.
If we get a signal in tethereal, stop the capture with a
"longjmp()", rather than by clearning the "go" flag;
"pcap_dispatch()", on many platforms, keeps reading rather than
returning a captured packet count of 0 if the system call to
read packets returns -1 with an errno of EINTR, so the
"pcap_dispatch()" won't be broken out of if the signal handler
returns.
Fix a typo in an error message.
svn path=/trunk/; revision=4471
2002-01-03 22:03:24 +00:00
" ld.go " to FALSE and return , we won ' t break out of it and quit
capturing . */
longjmp ( ld . stopenv , 1 ) ;
2000-01-14 06:46:00 +00:00
}
2002-06-28 09:47:36 +00:00
# endif /* _WIN32 */
2002-11-09 00:08:44 +00:00
static void
report_counts ( void )
{
# ifdef SIGINFO
/* XXX - if we use sigaction, this doesn't have to be done.
( Yes , this isn ' t necessary on BSD , but just in case a system
where " signal() " has AT & T semantics adopts SIGINFO . . . . ) */
signal ( SIGINFO , report_counts_siginfo ) ;
# endif /* SIGINFO */
if ( cfile . save_file ! = NULL & & quiet ) {
/* Report the count only if we're capturing to a file (rather
than printing captured packet information out ) and aren ' t
updating a count as packets arrive . */
fprintf ( stderr , " %u packets captured \n " , ld . packet_count ) ;
}
# ifdef SIGINFO
infoprint = FALSE ; /* we just reported it */
# endif /* SIGINFO */
}
# ifdef SIGINFO
static void
report_counts_siginfo ( int signum _U_ )
{
2003-05-14 10:31:15 +00:00
int sav_errno = errno ;
2002-11-09 00:08:44 +00:00
/* If we've been told to delay printing, just set a flag asking
that we print counts ( if we ' re supposed to ) , otherwise print
the count of packets captured ( if we ' re supposed to ) . */
if ( infodelay )
infoprint = TRUE ;
else
report_counts ( ) ;
2003-05-14 10:31:15 +00:00
errno = sav_errno ;
2002-11-09 00:08:44 +00:00
}
# endif /* SIGINFO */
2000-01-14 06:46:00 +00:00
# endif /* HAVE_LIBPCAP */
static int
2000-01-22 07:19:34 +00:00
load_cap_file ( capture_file * cf , int out_file_type )
2000-01-14 06:46:00 +00:00
{
2000-01-22 07:19:34 +00:00
gint linktype ;
Have Wiretap set the snapshot length to 0 if it can't be derived from
reading the capture file. Have callers of "wtap_snapshot_length()"
treat a value of 0 as "unknown", and default to WTAP_MAX_PACKET_SIZE (so
that, when writing a capture file in a format that *does* store the
snapshot length, we can at least put *something* in the file).
If we don't know the snapshot length of the current capture file, don't
display a value in the summary window.
Don't use "cfile.snap" as the snapshot length option when capturing -
doing so causes Ethereal to default, when capturing, to the snapshot
length of the last capture file that you read in, rather than to the
snapshot length of the last capture you did (or the initial default of
"no snapshot length").
Redo the "Capture Options" dialog box to group options into sections
with frames around them, and add units to the snapshot length, maximum
file size, and capture duration options, as per a suggestion by Ulf
Lamping. Also add units to the capture count option.
Make the snapshot length, capture count, maximum file size, and capture
duration options into a combination of a check box and a spin button.
If the check box is not checked, the limit in question is inactive
(snapshot length of 65535, no max packet count, no max file size, no max
capture duration); if it's checked, the spinbox specifies the limit.
Default all of the check boxes to "not checked" and all of the spin
boxes to small values.
Use "gtk_toggle_button_get_active()" rather than directly fetching the
state of a check box.
svn path=/trunk/; revision=4709
2002-02-08 10:07:41 +00:00
int snapshot_length ;
2000-01-22 07:19:34 +00:00
wtap_dumper * pdh ;
int err ;
int success ;
cb_args_t args ;
linktype = wtap_file_encap ( cf - > wth ) ;
if ( cf - > save_file ! = NULL ) {
/* Set up to write to the capture file. */
Have Wiretap set the snapshot length to 0 if it can't be derived from
reading the capture file. Have callers of "wtap_snapshot_length()"
treat a value of 0 as "unknown", and default to WTAP_MAX_PACKET_SIZE (so
that, when writing a capture file in a format that *does* store the
snapshot length, we can at least put *something* in the file).
If we don't know the snapshot length of the current capture file, don't
display a value in the summary window.
Don't use "cfile.snap" as the snapshot length option when capturing -
doing so causes Ethereal to default, when capturing, to the snapshot
length of the last capture file that you read in, rather than to the
snapshot length of the last capture you did (or the initial default of
"no snapshot length").
Redo the "Capture Options" dialog box to group options into sections
with frames around them, and add units to the snapshot length, maximum
file size, and capture duration options, as per a suggestion by Ulf
Lamping. Also add units to the capture count option.
Make the snapshot length, capture count, maximum file size, and capture
duration options into a combination of a check box and a spin button.
If the check box is not checked, the limit in question is inactive
(snapshot length of 65535, no max packet count, no max file size, no max
capture duration); if it's checked, the spinbox specifies the limit.
Default all of the check boxes to "not checked" and all of the spin
boxes to small values.
Use "gtk_toggle_button_get_active()" rather than directly fetching the
state of a check box.
svn path=/trunk/; revision=4709
2002-02-08 10:07:41 +00:00
snapshot_length = wtap_snapshot_length ( cf - > wth ) ;
if ( snapshot_length = = 0 ) {
/* Snapshot length of input file not known. */
snapshot_length = WTAP_MAX_PACKET_SIZE ;
}
2000-01-22 07:19:34 +00:00
pdh = wtap_dump_open ( cf - > save_file , out_file_type ,
Have Wiretap set the snapshot length to 0 if it can't be derived from
reading the capture file. Have callers of "wtap_snapshot_length()"
treat a value of 0 as "unknown", and default to WTAP_MAX_PACKET_SIZE (so
that, when writing a capture file in a format that *does* store the
snapshot length, we can at least put *something* in the file).
If we don't know the snapshot length of the current capture file, don't
display a value in the summary window.
Don't use "cfile.snap" as the snapshot length option when capturing -
doing so causes Ethereal to default, when capturing, to the snapshot
length of the last capture file that you read in, rather than to the
snapshot length of the last capture you did (or the initial default of
"no snapshot length").
Redo the "Capture Options" dialog box to group options into sections
with frames around them, and add units to the snapshot length, maximum
file size, and capture duration options, as per a suggestion by Ulf
Lamping. Also add units to the capture count option.
Make the snapshot length, capture count, maximum file size, and capture
duration options into a combination of a check box and a spin button.
If the check box is not checked, the limit in question is inactive
(snapshot length of 65535, no max packet count, no max file size, no max
capture duration); if it's checked, the spinbox specifies the limit.
Default all of the check boxes to "not checked" and all of the spin
boxes to small values.
Use "gtk_toggle_button_get_active()" rather than directly fetching the
state of a check box.
svn path=/trunk/; revision=4709
2002-02-08 10:07:41 +00:00
linktype , snapshot_length , & err ) ;
2000-01-22 07:19:34 +00:00
if ( pdh = = NULL ) {
/* We couldn't set up to write to the capture file. */
switch ( err ) {
case WTAP_ERR_UNSUPPORTED_FILE_TYPE :
fprintf ( stderr ,
" tethereal: Capture files can't be written in that format. \n " ) ;
break ;
case WTAP_ERR_UNSUPPORTED_ENCAP :
case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED :
fprintf ( stderr ,
2002-07-16 07:15:09 +00:00
" tethereal: The capture file being read cannot be written in "
" that format. \n " ) ;
2000-01-22 07:19:34 +00:00
break ;
case WTAP_ERR_CANT_OPEN :
fprintf ( stderr ,
2002-07-16 07:15:09 +00:00
" tethereal: The file \" %s \" couldn't be created for some "
" unknown reason. \n " ,
* cf - > save_file = = ' \0 ' ? " stdout " : cf - > save_file ) ;
2000-01-22 07:19:34 +00:00
break ;
case WTAP_ERR_SHORT_WRITE :
fprintf ( stderr ,
2002-07-16 07:15:09 +00:00
" tethereal: A full header couldn't be written to the file \" %s \" . \n " ,
* cf - > save_file = = ' \0 ' ? " stdout " : cf - > save_file ) ;
2000-01-22 07:19:34 +00:00
break ;
2000-01-14 06:46:00 +00:00
2000-01-22 07:19:34 +00:00
default :
2002-07-16 07:15:09 +00:00
fprintf ( stderr ,
" tethereal: The file \" %s \" could not be created: %s \n . " ,
* cf - > save_file = = ' \0 ' ? " stdout " : cf - > save_file ,
wtap_strerror ( err ) ) ;
2000-01-22 07:19:34 +00:00
break ;
}
goto out ;
}
args . cf = cf ;
args . pdh = pdh ;
2002-08-02 23:36:07 +00:00
success = wtap_loop ( cf - > wth , 0 , wtap_dispatch_cb_write , ( guchar * ) & args ,
2000-01-22 07:19:34 +00:00
& err ) ;
2001-09-05 05:03:47 +00:00
/* Now close the capture file. */
if ( ! wtap_dump_close ( pdh , & err ) )
show_capture_file_io_error ( cfile . save_file , err , TRUE ) ;
2000-01-22 07:19:34 +00:00
} else {
args . cf = cf ;
args . pdh = NULL ;
2003-12-06 06:09:13 +00:00
print_preamble ( stdout , print_format ) ;
2002-08-02 23:36:07 +00:00
success = wtap_loop ( cf - > wth , 0 , wtap_dispatch_cb_print , ( guchar * ) & args ,
2000-01-22 07:19:34 +00:00
& err ) ;
2003-12-06 06:09:13 +00:00
print_finale ( stdout , print_format ) ;
2000-01-22 07:19:34 +00:00
}
2000-01-14 06:46:00 +00:00
if ( ! success ) {
/* Print up a message box noting that the read failed somewhere along
the line . */
switch ( err ) {
2000-02-19 08:00:08 +00:00
case WTAP_ERR_UNSUPPORTED_ENCAP :
fprintf ( stderr ,
2001-02-10 09:08:14 +00:00
" tethereal: \" %s \" is a capture file is for a network type that Tethereal doesn't support. \n " ,
cf - > filename ) ;
2000-02-19 08:00:08 +00:00
break ;
2000-01-14 06:46:00 +00:00
case WTAP_ERR_CANT_READ :
2000-01-22 07:19:34 +00:00
fprintf ( stderr ,
2001-02-10 09:08:14 +00:00
" tethereal: An attempt to read from \" %s \" failed for some unknown reason. \n " ,
cf - > filename ) ;
2000-01-14 06:46:00 +00:00
break ;
case WTAP_ERR_SHORT_READ :
2000-01-22 07:19:34 +00:00
fprintf ( stderr ,
2001-02-10 09:08:14 +00:00
" tethereal: \" %s \" appears to have been cut short in the middle of a packet. \n " ,
cf - > filename ) ;
2000-01-14 06:46:00 +00:00
break ;
case WTAP_ERR_BAD_RECORD :
2000-01-22 07:19:34 +00:00
fprintf ( stderr ,
2001-02-10 09:08:14 +00:00
" tethereal: \" %s \" appears to be damaged or corrupt. \n " ,
cf - > filename ) ;
2000-01-14 06:46:00 +00:00
break ;
default :
2000-01-22 07:19:34 +00:00
fprintf ( stderr ,
2001-02-10 09:08:14 +00:00
" tethereal: An error occurred while reading \" %s \" : %s. \n " ,
cf - > filename , wtap_strerror ( err ) ) ;
2000-01-14 06:46:00 +00:00
break ;
}
}
2000-01-22 07:19:34 +00:00
out :
2000-01-14 06:46:00 +00:00
wtap_close ( cf - > wth ) ;
cf - > wth = NULL ;
return err ;
}
static void
2000-01-22 07:19:34 +00:00
fill_in_fdata ( frame_data * fdata , capture_file * cf ,
2002-03-31 20:57:02 +00:00
const struct wtap_pkthdr * phdr , long offset )
2000-01-14 06:46:00 +00:00
{
2000-01-22 07:19:34 +00:00
fdata - > next = NULL ;
fdata - > prev = NULL ;
2000-08-22 03:33:41 +00:00
fdata - > pfd = NULL ;
fdata - > num = cf - > count ;
fdata - > pkt_len = phdr - > len ;
2003-09-03 10:49:03 +00:00
cul_bytes + = phdr - > len ;
fdata - > cul_bytes = cul_bytes ;
2000-08-22 03:33:41 +00:00
fdata - > cap_len = phdr - > caplen ;
2000-01-22 07:19:34 +00:00
fdata - > file_off = offset ;
fdata - > lnk_t = phdr - > pkt_encap ;
fdata - > abs_secs = phdr - > ts . tv_sec ;
fdata - > abs_usecs = phdr - > ts . tv_usec ;
2000-08-22 03:33:41 +00:00
fdata - > flags . passed_dfilter = 0 ;
2000-04-13 20:39:38 +00:00
fdata - > flags . encoding = CHAR_ASCII ;
fdata - > flags . visited = 0 ;
2000-08-22 03:33:41 +00:00
fdata - > flags . marked = 0 ;
2003-09-19 04:52:16 +00:00
fdata - > flags . ref_time = 0 ;
2000-01-14 06:46:00 +00:00
/* If we don't have the time stamp of the first packet in the
capture , it ' s because this is the first packet . Save the time
stamp of this packet as the time stamp of the first packet . */
if ( ! firstsec & & ! firstusec ) {
2000-01-22 07:19:34 +00:00
firstsec = fdata - > abs_secs ;
firstusec = fdata - > abs_usecs ;
2000-01-14 06:46:00 +00:00
}
/* If we don't have the time stamp of the previous displayed packet,
it ' s because this is the first displayed packet . Save the time
stamp of this packet as the time stamp of the previous displayed
packet . */
if ( ! prevsec & & ! prevusec ) {
2000-01-22 07:19:34 +00:00
prevsec = fdata - > abs_secs ;
prevusec = fdata - > abs_usecs ;
2000-01-14 06:46:00 +00:00
}
/* Get the time elapsed between the first packet and this packet. */
2000-09-10 06:44:39 +00:00
compute_timestamp_diff ( & fdata - > rel_secs , & fdata - > rel_usecs ,
fdata - > abs_secs , fdata - > abs_usecs , firstsec , firstusec ) ;
/* If it's greater than the current elapsed time, set the elapsed time
to it ( we check for " greater than " so as not to be confused by
time moving backwards ) . */
2001-10-26 18:28:17 +00:00
if ( ( gint32 ) cf - > esec < fdata - > rel_secs
| | ( ( gint32 ) cf - > esec = = fdata - > rel_secs & & ( gint32 ) cf - > eusec < fdata - > rel_usecs ) ) {
2000-09-10 06:44:39 +00:00
cf - > esec = fdata - > rel_secs ;
cf - > eusec = fdata - > rel_usecs ;
}
2002-08-28 21:04:11 +00:00
2000-01-14 06:46:00 +00:00
/* Get the time elapsed between the previous displayed packet and
this packet . */
2000-09-10 06:44:39 +00:00
compute_timestamp_diff ( & fdata - > del_secs , & fdata - > del_usecs ,
fdata - > abs_secs , fdata - > abs_usecs , prevsec , prevusec ) ;
2000-01-22 07:19:34 +00:00
prevsec = fdata - > abs_secs ;
prevusec = fdata - > abs_usecs ;
}
2001-03-24 09:24:41 +00:00
/* Free up all data attached to a "frame_data" structure. */
static void
clear_fdata ( frame_data * fdata )
{
if ( fdata - > pfd )
g_slist_free ( fdata - > pfd ) ;
}
2000-01-22 07:19:34 +00:00
static void
2002-08-02 23:36:07 +00:00
wtap_dispatch_cb_write ( guchar * user , const struct wtap_pkthdr * phdr ,
long offset , union wtap_pseudo_header * pseudo_header , const guchar * buf )
2000-01-22 07:19:34 +00:00
{
cb_args_t * args = ( cb_args_t * ) user ;
capture_file * cf = args - > cf ;
wtap_dumper * pdh = args - > pdh ;
frame_data fdata ;
int err ;
gboolean passed ;
2000-10-06 10:11:40 +00:00
epan_dissect_t * edt ;
2000-01-22 07:19:34 +00:00
2003-06-13 03:44:36 +00:00
# ifdef HAVE_LIBPCAP
2002-11-09 00:08:44 +00:00
# ifdef SIGINFO
/*
* Prevent a SIGINFO handler from writing to stdout while we ' re
* doing so ; instead , have it just set a flag telling us to print
* that information when we ' re done .
*/
infodelay = TRUE ;
# endif /* SIGINFO */
2003-06-13 03:44:36 +00:00
# endif /* HAVE_LIBPCAP */
2002-11-09 00:08:44 +00:00
2000-01-22 07:19:34 +00:00
cf - > count + + ;
if ( cf - > rfcode ) {
2002-03-31 20:57:02 +00:00
fill_in_fdata ( & fdata , cf , phdr , offset ) ;
2001-12-18 19:09:08 +00:00
edt = epan_dissect_new ( TRUE , FALSE ) ;
epan_dissect_prime_dfilter ( edt , cf - > rfcode ) ;
epan_dissect_run ( edt , pseudo_header , buf , & fdata , NULL ) ;
2001-02-01 20:21:25 +00:00
passed = dfilter_apply_edt ( cf - > rfcode , edt ) ;
2000-01-14 06:46:00 +00:00
} else {
2000-01-22 07:19:34 +00:00
passed = TRUE ;
2000-10-06 10:11:40 +00:00
edt = NULL ;
2000-01-14 06:46:00 +00:00
}
2000-01-22 07:19:34 +00:00
if ( passed ) {
2002-06-23 21:58:02 +00:00
/* The packet passed the read filter. */
2002-07-17 00:22:30 +00:00
# ifdef HAVE_LIBPCAP
2003-09-25 00:08:58 +00:00
int loop_err ;
2002-06-23 21:58:02 +00:00
ld . packet_count + + ;
2003-09-25 00:08:58 +00:00
/* The current packet may have arrived after a very long silence,
* way past the time to switch files . In order not to have
* the first packet of a new series of events as the last
* [ or only ] packet in the file , switch before writing !
*/
if ( cnd_ring_timeout ! = NULL & & cnd_eval ( cnd_ring_timeout ) ) {
/* time elasped for this ring file, switch to the next */
if ( ringbuf_switch_file ( & cfile , & ld . pdh , & loop_err ) ) {
/* File switch succeeded: reset the condition */
cnd_reset ( cnd_ring_timeout ) ;
} else {
/* File switch failed: stop here */
/* XXX - we should do something with "loop_err" */
ld . go = FALSE ;
}
}
2002-07-17 00:22:30 +00:00
# endif
2002-06-30 20:26:45 +00:00
if ( ! wtap_dump ( pdh , phdr , pseudo_header , buf , & err ) ) {
2001-02-10 09:08:14 +00:00
# ifdef HAVE_LIBPCAP
2002-06-23 20:30:01 +00:00
if ( ld . pch ! = NULL & & ! quiet ) {
/* We're capturing packets, so (if -q not specified) we're printing
a count of packets captured ; move to the line after the count . */
2001-02-11 21:29:03 +00:00
fprintf ( stderr , " \n " ) ;
2001-02-10 09:08:14 +00:00
}
# endif
show_capture_file_io_error ( cf - > save_file , err , FALSE ) ;
# ifdef HAVE_LIBPCAP
if ( ld . pch ! = NULL )
pcap_close ( ld . pch ) ;
# endif
wtap_dump_close ( pdh , & err ) ;
exit ( 2 ) ;
}
2000-01-22 07:19:34 +00:00
}
2000-10-06 10:11:40 +00:00
if ( edt ! = NULL )
epan_dissect_free ( edt ) ;
2001-04-07 06:58:17 +00:00
if ( cf - > rfcode )
clear_fdata ( & fdata ) ;
2002-11-09 00:08:44 +00:00
2003-06-13 03:44:36 +00:00
# ifdef HAVE_LIBPCAP
2002-11-09 00:08:44 +00:00
# ifdef SIGINFO
/*
* Allow SIGINFO handlers to write .
*/
infodelay = FALSE ;
/*
* If a SIGINFO handler asked us to write out capture counts , do so .
*/
if ( infoprint )
report_counts ( ) ;
# endif /* SIGINFO */
2003-06-13 03:44:36 +00:00
# endif /* HAVE_LIBPCAP */
2000-01-22 07:19:34 +00:00
}
2001-02-10 09:08:14 +00:00
static void
show_capture_file_io_error ( const char * fname , int err , gboolean is_close )
{
2002-07-16 07:15:09 +00:00
if ( * fname = = ' \0 ' )
fname = " stdout " ;
2001-02-10 09:08:14 +00:00
switch ( err ) {
case ENOSPC :
fprintf ( stderr ,
" tethereal: Not all the packets could be written to \" %s \" because there is "
" no space left on the file system. \n " ,
fname ) ;
break ;
# ifdef EDQUOT
case EDQUOT :
fprintf ( stderr ,
" tethereal: Not all the packets could be written to \" %s \" because you are "
" too close to, or over your disk quota. \n " ,
fname ) ;
break ;
# endif
case WTAP_ERR_CANT_CLOSE :
fprintf ( stderr ,
" tethereal: \" %s \" couldn't be closed for some unknown reason. \n " ,
fname ) ;
break ;
case WTAP_ERR_SHORT_WRITE :
fprintf ( stderr ,
" tethereal: Not all the packets could be written to \" %s \" . \n " ,
fname ) ;
break ;
default :
if ( is_close ) {
fprintf ( stderr ,
" tethereal: \" %s \" could not be closed: %s. \n " ,
fname , wtap_strerror ( err ) ) ;
} else {
fprintf ( stderr ,
" tethereal: An error occurred while writing to \" %s \" : %s. \n " ,
fname , wtap_strerror ( err ) ) ;
}
break ;
}
}
2000-01-22 07:19:34 +00:00
static void
2002-08-02 23:36:07 +00:00
wtap_dispatch_cb_print ( guchar * user , const struct wtap_pkthdr * phdr ,
long offset , union wtap_pseudo_header * pseudo_header , const guchar * buf )
2000-01-22 07:19:34 +00:00
{
cb_args_t * args = ( cb_args_t * ) user ;
capture_file * cf = args - > cf ;
frame_data fdata ;
gboolean passed ;
2000-11-06 09:28:43 +00:00
print_args_t print_args ;
2000-10-06 10:11:40 +00:00
epan_dissect_t * edt ;
2001-12-06 04:25:09 +00:00
gboolean create_proto_tree ;
2000-11-06 09:28:43 +00:00
int i ;
2000-01-22 07:19:34 +00:00
cf - > count + + ;
2002-03-31 20:57:02 +00:00
fill_in_fdata ( & fdata , cf , phdr , offset ) ;
2000-01-14 06:46:00 +00:00
2003-05-04 18:50:56 +00:00
/* Grab any resolved addresses */
if ( g_resolv_flags ) {
host_name_lookup_process ( NULL ) ;
}
2000-01-14 06:46:00 +00:00
passed = TRUE ;
2002-11-01 01:11:59 +00:00
if ( cf - > rfcode | | verbose | | num_tap_filters ! = 0 )
2001-12-06 04:25:09 +00:00
create_proto_tree = TRUE ;
2000-01-14 06:46:00 +00:00
else
2001-12-06 04:25:09 +00:00
create_proto_tree = FALSE ;
2001-12-16 22:16:14 +00:00
/* The protocol tree will be "visible", i.e., printed, only if we're
not printing a summary .
We only need the columns if we ' re * not * verbose ; in verbose mode ,
2001-12-10 02:12:53 +00:00
we print the protocol tree , not the protocol summary . */
2002-11-01 01:11:59 +00:00
2001-12-18 19:09:08 +00:00
edt = epan_dissect_new ( create_proto_tree , verbose ) ;
if ( cf - > rfcode ) {
epan_dissect_prime_dfilter ( edt , cf - > rfcode ) ;
}
2002-09-04 09:40:29 +00:00
2002-10-17 02:11:20 +00:00
tap_queue_init ( edt ) ;
2001-12-18 19:09:08 +00:00
epan_dissect_run ( edt , pseudo_header , buf , & fdata , verbose ? NULL : & cf - > cinfo ) ;
2002-10-17 02:11:20 +00:00
tap_push_tapped_queue ( edt ) ;
2002-09-04 09:40:29 +00:00
2001-12-18 19:09:08 +00:00
if ( cf - > rfcode ) {
2001-02-01 20:21:25 +00:00
passed = dfilter_apply_edt ( cf - > rfcode , edt ) ;
2001-12-18 19:09:08 +00:00
}
2000-01-14 06:46:00 +00:00
if ( passed ) {
/* The packet passed the read filter. */
2002-07-17 00:22:30 +00:00
# ifdef HAVE_LIBPCAP
2002-06-23 21:58:02 +00:00
ld . packet_count + + ;
2002-07-17 00:22:30 +00:00
# endif
2000-01-14 06:46:00 +00:00
if ( verbose ) {
/* Print the information in the protocol tree. */
print_args . to_file = TRUE ;
2003-12-06 06:09:13 +00:00
print_args . format = print_format ;
2000-01-14 06:46:00 +00:00
print_args . print_summary = FALSE ;
2000-01-17 07:49:03 +00:00
print_args . print_hex = print_hex ;
2003-12-09 22:27:28 +00:00
print_args . print_dissections = print_dissections_expanded ;
print_args . print_range = print_range_all_captured ;
2002-06-04 07:03:57 +00:00
proto_tree_print ( & print_args , edt , stdout ) ;
2000-01-17 07:49:03 +00:00
if ( ! print_hex ) {
/* "print_hex_data()" will put out a leading blank line, as well
as a trailing one ; print one here , to separate the packets ,
only if " print_hex_data() " won ' t be called . */
printf ( " \n " ) ;
}
2000-01-14 06:46:00 +00:00
} else {
/* Just fill in the columns. */
2001-12-18 19:09:08 +00:00
epan_dissect_fill_in_columns ( edt ) ;
2000-11-06 09:28:43 +00:00
/* Now print them. */
for ( i = 0 ; i < cf - > cinfo . num_cols ; i + + ) {
switch ( cf - > cinfo . col_fmt [ i ] ) {
case COL_NUMBER :
/*
* Don ' t print this if we ' re doing a live capture from a network
* interface - if we ' re doing a live capture , you won ' t be
* able to look at the capture in the future ( it ' s not being
* saved anywhere ) , so the frame numbers are unlikely to be
* useful .
*
* ( XXX - it might be nice to be able to save and print at
* the same time , sort of like an " Update list of packets
* in real time " capture in Ethereal.)
*/
if ( cf - > iface ! = NULL )
continue ;
printf ( " %3s " , cf - > cinfo . col_data [ i ] ) ;
break ;
case COL_CLS_TIME :
case COL_REL_TIME :
case COL_ABS_TIME :
case COL_ABS_DATE_TIME : /* XXX - wider */
printf ( " %10s " , cf - > cinfo . col_data [ i ] ) ;
break ;
case COL_DEF_SRC :
case COL_RES_SRC :
case COL_UNRES_SRC :
case COL_DEF_DL_SRC :
case COL_RES_DL_SRC :
case COL_UNRES_DL_SRC :
case COL_DEF_NET_SRC :
case COL_RES_NET_SRC :
case COL_UNRES_NET_SRC :
printf ( " %12s " , cf - > cinfo . col_data [ i ] ) ;
break ;
case COL_DEF_DST :
case COL_RES_DST :
case COL_UNRES_DST :
case COL_DEF_DL_DST :
case COL_RES_DL_DST :
case COL_UNRES_DL_DST :
case COL_DEF_NET_DST :
case COL_RES_NET_DST :
case COL_UNRES_NET_DST :
printf ( " %-12s " , cf - > cinfo . col_data [ i ] ) ;
break ;
default :
printf ( " %s " , cf - > cinfo . col_data [ i ] ) ;
break ;
}
if ( i ! = cf - > cinfo . num_cols - 1 ) {
/*
* This isn ' t the last column , so we need to print a
* separator between this column and the next .
*
* If we printed a network source and are printing a
* network destination of the same type next , separate
* them with " -> " ; if we printed a network destination
* and are printing a network source of the same type
* next , separate them with " <- " ; otherwise separate them
* with a space .
*/
switch ( cf - > cinfo . col_fmt [ i ] ) {
case COL_DEF_SRC :
case COL_RES_SRC :
case COL_UNRES_SRC :
switch ( cf - > cinfo . col_fmt [ i + 1 ] ) {
case COL_DEF_DST :
case COL_RES_DST :
case COL_UNRES_DST :
printf ( " -> " ) ;
break ;
default :
putchar ( ' ' ) ;
break ;
}
break ;
case COL_DEF_DL_SRC :
case COL_RES_DL_SRC :
case COL_UNRES_DL_SRC :
switch ( cf - > cinfo . col_fmt [ i + 1 ] ) {
case COL_DEF_DL_DST :
case COL_RES_DL_DST :
case COL_UNRES_DL_DST :
printf ( " -> " ) ;
break ;
default :
putchar ( ' ' ) ;
break ;
}
break ;
case COL_DEF_NET_SRC :
case COL_RES_NET_SRC :
case COL_UNRES_NET_SRC :
switch ( cf - > cinfo . col_fmt [ i + 1 ] ) {
case COL_DEF_NET_DST :
case COL_RES_NET_DST :
case COL_UNRES_NET_DST :
printf ( " -> " ) ;
break ;
default :
putchar ( ' ' ) ;
break ;
}
break ;
case COL_DEF_DST :
case COL_RES_DST :
case COL_UNRES_DST :
switch ( cf - > cinfo . col_fmt [ i + 1 ] ) {
case COL_DEF_SRC :
case COL_RES_SRC :
case COL_UNRES_SRC :
printf ( " <- " ) ;
break ;
default :
putchar ( ' ' ) ;
break ;
}
break ;
case COL_DEF_DL_DST :
case COL_RES_DL_DST :
case COL_UNRES_DL_DST :
switch ( cf - > cinfo . col_fmt [ i + 1 ] ) {
case COL_DEF_DL_SRC :
case COL_RES_DL_SRC :
case COL_UNRES_DL_SRC :
printf ( " <- " ) ;
break ;
default :
putchar ( ' ' ) ;
break ;
}
break ;
case COL_DEF_NET_DST :
case COL_RES_NET_DST :
case COL_UNRES_NET_DST :
switch ( cf - > cinfo . col_fmt [ i + 1 ] ) {
case COL_DEF_NET_SRC :
case COL_RES_NET_SRC :
case COL_UNRES_NET_SRC :
printf ( " <- " ) ;
break ;
default :
putchar ( ' ' ) ;
break ;
}
break ;
default :
putchar ( ' ' ) ;
break ;
}
}
2000-01-14 06:46:00 +00:00
}
2000-11-09 07:29:59 +00:00
putchar ( ' \n ' ) ;
2000-01-14 06:46:00 +00:00
}
2000-01-17 07:49:03 +00:00
if ( print_hex ) {
2002-06-04 07:03:57 +00:00
print_hex_data ( stdout , print_args . format , edt ) ;
2000-11-06 09:28:43 +00:00
putchar ( ' \n ' ) ;
2000-01-17 07:49:03 +00:00
}
2000-01-14 06:46:00 +00:00
}
2001-02-18 03:38:44 +00:00
/* The ANSI C standard does not appear to *require* that a line-buffered
stream be flushed to the host environment whenever a newline is
written , it just says that , on such a stream , characters " are
intended to be transmitted to or from the host environment as a
block when a new - line character is encountered " .
The Visual C + + 6.0 C implementation doesn ' t do what is intended ;
even if you set a stream to be line - buffered , it still doesn ' t
flush the buffer at the end of every line .
So , if the " -l " flag was specified , we flush the standard output
at the end of a packet . This will do the right thing if we ' re
printing packet summary lines , and , as we print the entire protocol
tree for a single packet without waiting for anything to happen ,
it should be as good as line - buffered mode if we ' re printing
protocol trees . ( The whole reason for the " -l " flag in either
tcpdump or Tethereal is to allow the output of a live capture to
be piped to a program or script and to have that script see the
information for the packet as soon as it ' s printed , rather than
having to wait until a standard I / O buffer fills up . */
if ( line_buffered )
fflush ( stdout ) ;
2000-05-18 08:35:01 +00:00
2000-10-06 10:11:40 +00:00
epan_dissect_free ( edt ) ;
2001-03-24 09:24:41 +00:00
clear_fdata ( & fdata ) ;
2000-01-14 06:46:00 +00:00
}
char *
2002-07-16 07:15:09 +00:00
file_open_error_message ( int err , gboolean for_writing , int file_type )
2000-01-14 06:46:00 +00:00
{
char * errmsg ;
static char errmsg_errno [ 1024 + 1 ] ;
switch ( err ) {
case WTAP_ERR_NOT_REGULAR_FILE :
In Tethereal:
When capturing, report errors trying to create the output file
with "file_open_error_message()".
Make the "for_writing" argument to "file_open_error_message()" a
"gboolean", as it's either TRUE (if the file is being opened for
writing) or FALSE (if it's being opened for reading).
Report EISDIR as "XXX is a directory (folder), not a file.".
When checking whether an "open()" of a capture file succeeded, check
whether "open()" returns a negative number, not whether it returns 0.
In "wtap_open_offline()", if the file to be opened is a directory,
return EISDIR, not WTAP_ERR_NOT_REGULAR_FILE, so that the error message
can say "that's a directory, not a file".
If "wtap_open_offline()" returns WTAP_ERR_NOT_REGULAR_FILE, don't just
say the file is "invalid", say it's a "special file" or socket or some
other weird type of file.
svn path=/trunk/; revision=2144
2000-07-20 09:39:43 +00:00
errmsg = " The file \" %s \" is a \" special file \" or socket or other non-regular file. " ;
2000-01-14 06:46:00 +00:00
break ;
case WTAP_ERR_FILE_UNKNOWN_FORMAT :
case WTAP_ERR_UNSUPPORTED :
/* Seen only when opening a capture file for reading. */
2000-02-11 06:53:31 +00:00
errmsg = " The file \" %s \" is not a capture file in a format Tethereal understands. " ;
2000-01-14 06:46:00 +00:00
break ;
2002-07-16 07:15:09 +00:00
case WTAP_ERR_CANT_WRITE_TO_PIPE :
/* Seen only when opening a capture file for writing. */
snprintf ( errmsg_errno , sizeof ( errmsg_errno ) ,
" The file \" %%s \" is a pipe, and %s capture files cannot be "
" written to a pipe. " , wtap_file_type_string ( file_type ) ) ;
errmsg = errmsg_errno ;
break ;
2000-01-14 06:46:00 +00:00
case WTAP_ERR_UNSUPPORTED_FILE_TYPE :
/* Seen only when opening a capture file for writing. */
2000-02-11 06:53:31 +00:00
errmsg = " Tethereal does not support writing capture files in that format. " ;
2000-01-14 06:46:00 +00:00
break ;
case WTAP_ERR_UNSUPPORTED_ENCAP :
case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED :
2000-02-19 08:00:08 +00:00
if ( for_writing )
errmsg = " Tethereal cannot save this capture in that format. " ;
else
errmsg = " The file \" %s \" is a capture for a network type that Tethereal doesn't support. " ;
2000-01-14 06:46:00 +00:00
break ;
case WTAP_ERR_BAD_RECORD :
errmsg = " The file \" %s \" appears to be damaged or corrupt. " ;
break ;
case WTAP_ERR_CANT_OPEN :
if ( for_writing )
errmsg = " The file \" %s \" could not be created for some unknown reason. " ;
else
errmsg = " The file \" %s \" could not be opened for some unknown reason. " ;
break ;
case WTAP_ERR_SHORT_READ :
errmsg = " The file \" %s \" appears to have been cut short "
2001-12-04 23:38:55 +00:00
" in the middle of a packet or other data. " ;
2000-01-14 06:46:00 +00:00
break ;
case WTAP_ERR_SHORT_WRITE :
errmsg = " A full header couldn't be written to the file \" %s \" . " ;
break ;
case ENOENT :
if ( for_writing )
errmsg = " The path to the file \" %s \" does not exist. " ;
else
errmsg = " The file \" %s \" does not exist. " ;
break ;
case EACCES :
if ( for_writing )
errmsg = " You do not have permission to create or write to the file \" %s \" . " ;
else
errmsg = " You do not have permission to read the file \" %s \" . " ;
In Tethereal:
When capturing, report errors trying to create the output file
with "file_open_error_message()".
Make the "for_writing" argument to "file_open_error_message()" a
"gboolean", as it's either TRUE (if the file is being opened for
writing) or FALSE (if it's being opened for reading).
Report EISDIR as "XXX is a directory (folder), not a file.".
When checking whether an "open()" of a capture file succeeded, check
whether "open()" returns a negative number, not whether it returns 0.
In "wtap_open_offline()", if the file to be opened is a directory,
return EISDIR, not WTAP_ERR_NOT_REGULAR_FILE, so that the error message
can say "that's a directory, not a file".
If "wtap_open_offline()" returns WTAP_ERR_NOT_REGULAR_FILE, don't just
say the file is "invalid", say it's a "special file" or socket or some
other weird type of file.
svn path=/trunk/; revision=2144
2000-07-20 09:39:43 +00:00
break ;
case EISDIR :
errmsg = " \" %s \" is a directory (folder), not a file. " ;
2000-01-14 06:46:00 +00:00
break ;
default :
2000-08-19 18:20:59 +00:00
snprintf ( errmsg_errno , sizeof ( errmsg_errno ) ,
2002-07-16 07:15:09 +00:00
" The file \" %%s \" could not be %s: %s. " ,
for_writing ? " created " : " opened " ,
2000-08-19 18:20:59 +00:00
wtap_strerror ( err ) ) ;
2000-01-14 06:46:00 +00:00
errmsg = errmsg_errno ;
break ;
}
return errmsg ;
}
int
2003-09-15 22:48:42 +00:00
cf_open ( char * fname , gboolean is_tempfile , capture_file * cf )
2000-01-14 06:46:00 +00:00
{
wtap * wth ;
int err ;
char err_msg [ 2048 + 1 ] ;
2000-05-18 09:09:50 +00:00
wth = wtap_open_offline ( fname , & err , FALSE ) ;
2000-01-14 06:46:00 +00:00
if ( wth = = NULL )
goto fail ;
/* The open succeeded. Fill in the information for this file. */
2002-02-24 06:45:14 +00:00
/* Initialize all data structures used for dissection. */
init_dissection ( ) ;
2001-06-08 06:27:16 +00:00
2000-01-14 06:46:00 +00:00
cf - > wth = wth ;
2002-06-23 21:33:09 +00:00
cf - > filed = - 1 ; /* not used, but set it anyway */
cf - > f_len = 0 ; /* not used, but set it anyway */
2000-01-14 06:46:00 +00:00
/* Set the file name because we need it to set the follow stream filter.
XXX - is that still true ? We need it for other reasons , though ,
in any case . */
cf - > filename = g_strdup ( fname ) ;
/* Indicate whether it's a permanent or temporary file. */
cf - > is_tempfile = is_tempfile ;
/* If it's a temporary capture buffer file, mark it as not saved. */
cf - > user_saved = ! is_tempfile ;
cf - > cd_t = wtap_file_type ( cf - > wth ) ;
cf - > count = 0 ;
2001-02-11 09:28:17 +00:00
cf - > drops_known = FALSE ;
2000-01-14 06:46:00 +00:00
cf - > drops = 0 ;
cf - > esec = 0 ;
cf - > eusec = 0 ;
cf - > snap = wtap_snapshot_length ( cf - > wth ) ;
Have Wiretap set the snapshot length to 0 if it can't be derived from
reading the capture file. Have callers of "wtap_snapshot_length()"
treat a value of 0 as "unknown", and default to WTAP_MAX_PACKET_SIZE (so
that, when writing a capture file in a format that *does* store the
snapshot length, we can at least put *something* in the file).
If we don't know the snapshot length of the current capture file, don't
display a value in the summary window.
Don't use "cfile.snap" as the snapshot length option when capturing -
doing so causes Ethereal to default, when capturing, to the snapshot
length of the last capture file that you read in, rather than to the
snapshot length of the last capture you did (or the initial default of
"no snapshot length").
Redo the "Capture Options" dialog box to group options into sections
with frames around them, and add units to the snapshot length, maximum
file size, and capture duration options, as per a suggestion by Ulf
Lamping. Also add units to the capture count option.
Make the snapshot length, capture count, maximum file size, and capture
duration options into a combination of a check box and a spin button.
If the check box is not checked, the limit in question is inactive
(snapshot length of 65535, no max packet count, no max file size, no max
capture duration); if it's checked, the spinbox specifies the limit.
Default all of the check boxes to "not checked" and all of the spin
boxes to small values.
Use "gtk_toggle_button_get_active()" rather than directly fetching the
state of a check box.
svn path=/trunk/; revision=4709
2002-02-08 10:07:41 +00:00
if ( cf - > snap = = 0 ) {
/* Snapshot length not known. */
cf - > has_snap = FALSE ;
cf - > snap = WTAP_MAX_PACKET_SIZE ;
} else
cf - > has_snap = TRUE ;
2000-01-14 06:46:00 +00:00
cf - > progbar_quantum = 0 ;
cf - > progbar_nextstep = 0 ;
firstsec = 0 , firstusec = 0 ;
prevsec = 0 , prevusec = 0 ;
2002-08-28 21:04:11 +00:00
2000-01-14 06:46:00 +00:00
return ( 0 ) ;
fail :
2002-07-16 07:15:09 +00:00
snprintf ( err_msg , sizeof err_msg , file_open_error_message ( err , FALSE , 0 ) ,
fname ) ;
2000-01-14 06:46:00 +00:00
fprintf ( stderr , " tethereal: %s \n " , err_msg ) ;
return ( err ) ;
}
2002-12-29 22:40:10 +00:00
2003-06-13 03:44:36 +00:00
# ifdef HAVE_LIBPCAP
2002-12-31 22:01:48 +00:00
# ifndef _WIN32
2002-12-29 22:40:10 +00:00
/* Take care of byte order in the libpcap headers read from pipes.
* ( function taken from wiretap / libpcap . c ) */
static void
adjust_header ( loop_data * ld , struct pcap_hdr * hdr , struct pcaprec_hdr * rechdr )
{
if ( ld - > byte_swapped ) {
/* Byte-swap the record header fields. */
rechdr - > ts_sec = BSWAP32 ( rechdr - > ts_sec ) ;
rechdr - > ts_usec = BSWAP32 ( rechdr - > ts_usec ) ;
rechdr - > incl_len = BSWAP32 ( rechdr - > incl_len ) ;
rechdr - > orig_len = BSWAP32 ( rechdr - > orig_len ) ;
}
/* In file format version 2.3, the "incl_len" and "orig_len" fields were
swapped , in order to match the BPF header layout .
Unfortunately , some files were , according to a comment in the " libpcap "
source , written with version 2.3 in their headers but without the
interchanged fields , so if " incl_len " is greater than " orig_len " - which
would make no sense - we assume that we need to swap them . */
if ( hdr - > version_major = = 2 & &
( hdr - > version_minor < 3 | |
( hdr - > version_minor = = 3 & & rechdr - > incl_len > rechdr - > orig_len ) ) ) {
guint32 temp ;
temp = rechdr - > orig_len ;
rechdr - > orig_len = rechdr - > incl_len ;
rechdr - > incl_len = temp ;
}
}
/* Mimic pcap_open_live() for pipe captures
* We check if " pipename " is " - " ( stdin ) or a FIFO , open it , and read the
* header .
* N . B . : we can ' t read the libpcap formats used in RedHat 6.1 or SuSE 6.3
* because we can ' t seek on pipes ( see wiretap / libpcap . c for details ) */
static int
pipe_open_live ( char * pipename , struct pcap_hdr * hdr , loop_data * ld ,
char * errmsg , int errmsgl )
{
struct stat pipe_stat ;
int fd ;
guint32 magic ;
int b ;
unsigned int bytes_read ;
/*
2002-12-31 21:18:05 +00:00
* XXX Tethereal blocks until we return
2002-12-29 22:40:10 +00:00
*/
if ( strcmp ( pipename , " - " ) = = 0 )
fd = 0 ; /* read from stdin */
else {
if ( stat ( pipename , & pipe_stat ) < 0 ) {
if ( errno = = ENOENT | | errno = = ENOTDIR )
ld - > pipe_err = PIPNEXIST ;
else {
snprintf ( errmsg , errmsgl ,
" The capture session could not be initiated "
" due to error on pipe: %s " , strerror ( errno ) ) ;
ld - > pipe_err = PIPERR ;
}
return - 1 ;
}
if ( ! S_ISFIFO ( pipe_stat . st_mode ) ) {
if ( S_ISCHR ( pipe_stat . st_mode ) ) {
/*
* Assume the user specified an interface on a system where
* interfaces are in / dev . Pretend we haven ' t seen it .
*/
ld - > pipe_err = PIPNEXIST ;
} else {
snprintf ( errmsg , errmsgl ,
" The capture session could not be initiated because \n "
" \" %s \" is neither an interface nor a pipe " , pipename ) ;
ld - > pipe_err = PIPERR ;
}
return - 1 ;
}
fd = open ( pipename , O_RDONLY ) ;
if ( fd = = - 1 ) {
snprintf ( errmsg , errmsgl ,
" The capture session could not be initiated "
" due to error on pipe open: %s " , strerror ( errno ) ) ;
ld - > pipe_err = PIPERR ;
return - 1 ;
}
}
ld - > from_pipe = TRUE ;
/* read the pcap header */
bytes_read = 0 ;
while ( bytes_read < sizeof magic ) {
b = read ( fd , ( ( char * ) & magic ) + bytes_read , sizeof magic - bytes_read ) ;
if ( b < = 0 ) {
if ( b = = 0 )
snprintf ( errmsg , errmsgl , " End of file on pipe during open " ) ;
else
snprintf ( errmsg , errmsgl , " Error on pipe during open: %s " ,
strerror ( errno ) ) ;
goto error ;
}
bytes_read + = b ;
}
switch ( magic ) {
case PCAP_MAGIC :
/* Host that wrote it has our byte order, and was running
a program using either standard or ss990417 libpcap . */
ld - > byte_swapped = FALSE ;
ld - > modified = FALSE ;
break ;
case PCAP_MODIFIED_MAGIC :
/* Host that wrote it has our byte order, but was running
a program using either ss990915 or ss991029 libpcap . */
ld - > byte_swapped = FALSE ;
ld - > modified = TRUE ;
break ;
case PCAP_SWAPPED_MAGIC :
/* Host that wrote it has a byte order opposite to ours,
and was running a program using either standard or
ss990417 libpcap . */
ld - > byte_swapped = TRUE ;
ld - > modified = FALSE ;
break ;
case PCAP_SWAPPED_MODIFIED_MAGIC :
/* Host that wrote it out has a byte order opposite to
ours , and was running a program using either ss990915
or ss991029 libpcap . */
ld - > byte_swapped = TRUE ;
ld - > modified = TRUE ;
break ;
default :
/* Not a "libpcap" type we know about. */
snprintf ( errmsg , errmsgl , " Unrecognized libpcap format " ) ;
goto error ;
}
/* Read the rest of the header */
bytes_read = 0 ;
while ( bytes_read < sizeof ( struct pcap_hdr ) ) {
b = read ( fd , ( ( char * ) hdr ) + bytes_read ,
sizeof ( struct pcap_hdr ) - bytes_read ) ;
if ( b < = 0 ) {
if ( b = = 0 )
snprintf ( errmsg , errmsgl , " End of file on pipe during open " ) ;
else
snprintf ( errmsg , errmsgl , " Error on pipe during open: %s " ,
strerror ( errno ) ) ;
goto error ;
}
bytes_read + = b ;
}
if ( ld - > byte_swapped ) {
/* Byte-swap the header fields about which we care. */
hdr - > version_major = BSWAP16 ( hdr - > version_major ) ;
hdr - > version_minor = BSWAP16 ( hdr - > version_minor ) ;
hdr - > snaplen = BSWAP32 ( hdr - > snaplen ) ;
hdr - > network = BSWAP32 ( hdr - > network ) ;
}
if ( hdr - > version_major < 2 ) {
snprintf ( errmsg , errmsgl , " Unable to read old libpcap format " ) ;
goto error ;
}
ld - > pipe_state = STATE_EXPECT_REC_HDR ;
ld - > pipe_err = PIPOK ;
return fd ;
error :
ld - > pipe_err = PIPERR ;
close ( fd ) ;
return - 1 ;
}
/* We read one record from the pipe, take care of byte order in the record
* header , write the record in the capture file , and update capture statistics . */
static int
pipe_dispatch ( int fd , loop_data * ld , struct pcap_hdr * hdr ,
struct pcaprec_modified_hdr * rechdr , guchar * data ,
char * errmsg , int errmsgl )
{
struct pcap_pkthdr phdr ;
int b ;
enum { PD_REC_HDR_READ , PD_DATA_READ , PD_PIPE_EOF , PD_PIPE_ERR ,
PD_ERR } result ;
switch ( ld - > pipe_state ) {
case STATE_EXPECT_REC_HDR :
ld - > bytes_to_read = ld - > modified ?
sizeof ( struct pcaprec_modified_hdr ) : sizeof ( struct pcaprec_hdr ) ;
ld - > bytes_read = 0 ;
ld - > pipe_state = STATE_READ_REC_HDR ;
/* Fall through */
case STATE_READ_REC_HDR :
b = read ( fd , ( ( char * ) rechdr ) + ld - > bytes_read ,
ld - > bytes_to_read - ld - > bytes_read ) ;
if ( b < = 0 ) {
if ( b = = 0 )
result = PD_PIPE_EOF ;
else
result = PD_PIPE_ERR ;
break ;
}
if ( ( ld - > bytes_read + = b ) < ld - > bytes_to_read )
return 0 ;
result = PD_REC_HDR_READ ;
break ;
case STATE_EXPECT_DATA :
ld - > bytes_read = 0 ;
ld - > pipe_state = STATE_READ_DATA ;
/* Fall through */
case STATE_READ_DATA :
b = read ( fd , data + ld - > bytes_read , rechdr - > hdr . incl_len - ld - > bytes_read ) ;
if ( b < = 0 ) {
if ( b = = 0 )
result = PD_PIPE_EOF ;
else
result = PD_PIPE_ERR ;
break ;
}
if ( ( ld - > bytes_read + = b ) < rechdr - > hdr . incl_len )
return 0 ;
result = PD_DATA_READ ;
break ;
default :
snprintf ( errmsg , errmsgl , " pipe_dispatch: invalid state " ) ;
result = PD_ERR ;
} /* switch (ld->pipe_state) */
/*
* We ' ve now read as much data as we were expecting , so process it .
*/
switch ( result ) {
case PD_REC_HDR_READ :
/* We've read the header. Take care of byte order. */
adjust_header ( ld , hdr , & rechdr - > hdr ) ;
if ( rechdr - > hdr . incl_len > WTAP_MAX_PACKET_SIZE ) {
snprintf ( errmsg , errmsgl , " Frame %u too long (%d bytes) " ,
ld - > packet_count + 1 , rechdr - > hdr . incl_len ) ;
break ;
}
ld - > pipe_state = STATE_EXPECT_DATA ;
return 0 ;
case PD_DATA_READ :
/* Fill in a "struct pcap_pkthdr", and process the packet. */
phdr . ts . tv_sec = rechdr - > hdr . ts_sec ;
phdr . ts . tv_usec = rechdr - > hdr . ts_usec ;
phdr . caplen = rechdr - > hdr . incl_len ;
phdr . len = rechdr - > hdr . orig_len ;
capture_pcap_cb ( ( guchar * ) ld , & phdr , data ) ;
ld - > pipe_state = STATE_EXPECT_REC_HDR ;
return 1 ;
case PD_PIPE_EOF :
ld - > pipe_err = PIPEOF ;
return - 1 ;
case PD_PIPE_ERR :
snprintf ( errmsg , errmsgl , " Error reading from pipe: %s " ,
strerror ( errno ) ) ;
/* Fall through */
case PD_ERR :
break ;
}
ld - > pipe_err = PIPERR ;
/* Return here rather than inside the switch to prevent GCC warning */
return - 1 ;
}
2003-06-13 03:44:36 +00:00
# endif /* _WIN32 */
# endif /* HAVE_LIBPCAP */