Ethereal-dev: Re: [ethereal-dev] problem with 'live' captures and latest CVS.
Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.
From: Guy Harris <guy@xxxxxxxxxx>
Date: Mon, 3 Apr 2000 15:03:20 -0700 (PDT)
> So, we need to track down why cf->plist_chunk is NULL. It's because there are two places where the GMemChunk has to be allocated, and I only did it in one of them. If my machine here at work manages to contact "pow.zing.org", I'll check in a fix. If it doesn't, the fixed "file.c" is attached, although, if it doesn't, it probably means nobody other than Paul and Gilbert will see this for a while (I'll CC myself just in case the problem is with the Internet connection here at NetApp).
/* file.c
* File I/O routines
*
* $Id: file.c,v 1.176 2000/04/03 08:57:17 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@xxxxxxxx>
* Copyright 1998 Gerald Combs
*
*
* 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.
*
* 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.
*
* 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 <gtk/gtk.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <time.h>
#ifdef HAVE_IO_H
#include <io.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#ifdef NEED_SNPRINTF_H
# ifdef HAVE_STDARG_H
# include <stdarg.h>
# else
# include <varargs.h>
# endif
# include "snprintf.h"
#endif
#ifdef NEED_STRERROR_H
#include "strerror.h"
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include "gtk/main.h"
#include "column.h"
#include "packet.h"
#include "print.h"
#include "file.h"
#include "menu.h"
#include "util.h"
#include "simple_dialog.h"
#include "ui_util.h"
#include "prefs.h"
#include "gtk/proto_draw.h"
#include "dfilter.h"
#include "conversation.h"
#include "globals.h"
#include "plugins.h"
extern GtkWidget *packet_list, *prog_bar, *info_bar, *byte_view, *tree_view;
extern guint file_ctx;
gboolean auto_scroll_live = FALSE;
static guint32 firstsec, firstusec;
static guint32 prevsec, prevusec;
static void wtap_dispatch_cb(u_char *, const struct wtap_pkthdr *, int,
const u_char *);
static void freeze_clist(capture_file *cf);
static void thaw_clist(capture_file *cf);
static char *file_rename_error_message(int err);
static char *file_close_error_message(int err);
/* Update the progress bar this many times when reading a file. */
#define N_PROGBAR_UPDATES 100
/* Number of "frame_data" structures per memory chunk.
XXX - is this the right number? */
#define FRAME_DATA_CHUNK_SIZE 1024
int
open_cap_file(char *fname, gboolean is_tempfile, capture_file *cf)
{
wtap *wth;
int err;
FILE_T fh;
int fd;
struct stat cf_stat;
wth = wtap_open_offline(fname, &err);
if (wth == NULL)
goto fail;
/* Find the size of the file. */
fh = wtap_file(wth);
fd = wtap_fd(wth);
if (fstat(fd, &cf_stat) < 0) {
err = errno;
wtap_close(wth);
goto fail;
}
/* The open succeeded. Close whatever capture file we had open,
and fill in the information for this file. */
close_cap_file(cf, info_bar);
/* Initialize the table of conversations. */
conversation_init();
/* Initialize protocol-specific variables */
init_all_protocols();
cf->wth = wth;
cf->fh = fh;
cf->filed = fd;
cf->f_len = cf_stat.st_size;
/* 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;
cf->drops = 0;
cf->esec = 0;
cf->eusec = 0;
cf->snap = wtap_snapshot_length(cf->wth);
cf->update_progbar = FALSE;
cf->progbar_quantum = 0;
cf->progbar_nextstep = 0;
firstsec = 0, firstusec = 0;
prevsec = 0, prevusec = 0;
return (0);
fail:
simple_dialog(ESD_TYPE_WARN, NULL,
file_open_error_message(err, FALSE), fname);
return (err);
}
/* Reset everything to a pristine state */
void
close_cap_file(capture_file *cf, void *w)
{
/* Destroy all popup packet windows, as they refer to packets in the
capture file we're closing. */
destroy_packet_wins();
if (cf->fh) {
file_close(cf->fh);
cf->fh = NULL;
}
if (cf->wth) {
wtap_close(cf->wth);
cf->wth = NULL;
}
/* We have no file open... */
if (cf->filename != NULL) {
/* If it's a temporary file, remove it. */
if (cf->is_tempfile)
unlink(cf->filename);
g_free(cf->filename);
cf->filename = NULL;
}
/* ...which means we have nothing to save. */
cf->user_saved = FALSE;
if (cf->plist_chunk != NULL)
g_mem_chunk_destroy(cf->plist_chunk);
if (cf->rfcode != NULL) {
dfilter_destroy(cf->rfcode);
cf->rfcode = NULL;
}
cf->plist = NULL;
cf->plist_end = NULL;
unselect_packet(cf); /* nothing to select */
cf->first_displayed = NULL;
cf->last_displayed = NULL;
/* Clear the packet list. */
gtk_clist_freeze(GTK_CLIST(packet_list));
gtk_clist_clear(GTK_CLIST(packet_list));
gtk_clist_thaw(GTK_CLIST(packet_list));
/* Clear any file-related status bar messages.
XXX - should be "clear *ALL* file-related status bar messages;
will there ever be more than one on the stack? */
gtk_statusbar_pop(GTK_STATUSBAR(w), file_ctx);
/* Restore the standard title bar message. */
set_main_window_name("The Ethereal Network Analyzer");
/* Disable all menu items that make sense only if you have a capture. */
set_menus_for_capture_file(FALSE);
set_menus_for_unsaved_capture_file(FALSE);
set_menus_for_captured_packets(FALSE);
set_menus_for_selected_packet(FALSE);
set_menus_for_capture_in_progress(FALSE);
}
/* Set the file name in the status line, in the name for the main window,
and in the name for the main window's icon. */
static void
set_display_filename(capture_file *cf)
{
gchar *name_ptr;
size_t msg_len;
gchar *done_fmt = " File: %s Drops: %u";
gchar *done_msg;
gchar *win_name_fmt = "%s - Ethereal";
gchar *win_name;
if (!cf->is_tempfile) {
/* Get the last component of the file name, and put that in the
status bar. */
name_ptr = get_basename(cf->filename);
} else {
/* The file we read is a temporary file from a live capture;
we don't mention its name in the status bar. */
name_ptr = "<capture>";
}
msg_len = strlen(name_ptr) + strlen(done_fmt) + 64;
done_msg = g_malloc(msg_len);
snprintf(done_msg, msg_len, done_fmt, name_ptr, cf->drops);
gtk_statusbar_push(GTK_STATUSBAR(info_bar), file_ctx, done_msg);
g_free(done_msg);
msg_len = strlen(name_ptr) + strlen(win_name_fmt) + 1;
win_name = g_malloc(msg_len);
snprintf(win_name, msg_len, win_name_fmt, name_ptr);
set_main_window_name(win_name);
g_free(win_name);
}
int
read_cap_file(capture_file *cf)
{
gchar *name_ptr, *load_msg, *load_fmt = " Loading: %s...";
int success;
int err;
size_t msg_len;
char *errmsg;
char errmsg_errno[1024+1];
gchar err_str[2048+1];
name_ptr = get_basename(cf->filename);
msg_len = strlen(name_ptr) + strlen(load_fmt) + 2;
load_msg = g_malloc(msg_len);
snprintf(load_msg, msg_len, load_fmt, name_ptr);
gtk_statusbar_push(GTK_STATUSBAR(info_bar), file_ctx, load_msg);
g_free(load_msg);
cf->update_progbar = TRUE;
/* Update the progress bar when it gets to this value. */
cf->progbar_nextstep = 0;
/* When we reach the value that triggers a progress bar update,
bump that value by this amount. */
cf->progbar_quantum = cf->f_len/N_PROGBAR_UPDATES;
#ifndef O_BINARY
#define O_BINARY 0
#endif
freeze_clist(cf);
proto_tree_is_visible = FALSE;
cf->plist_chunk = g_mem_chunk_new("frame_data_chunk",
sizeof(frame_data),
FRAME_DATA_CHUNK_SIZE * sizeof(frame_data),
G_ALLOC_AND_FREE);
success = wtap_loop(cf->wth, 0, wtap_dispatch_cb, (u_char *) cf, &err);
/* Set the file encapsulation type now; we don't know what it is until
we've looked at all the packets, as we don't know until then whether
there's more than one type (and thus whether it's
WTAP_ENCAP_PER_PACKET). */
cf->lnk_t = wtap_file_encap(cf->wth);
wtap_close(cf->wth);
cf->wth = NULL;
cf->filed = open(cf->filename, O_RDONLY|O_BINARY);
cf->fh = filed_open(cf->filed, "rb");
cf->current_frame = cf->first_displayed;
thaw_clist(cf);
gtk_progress_set_activity_mode(GTK_PROGRESS(prog_bar), FALSE);
gtk_progress_set_value(GTK_PROGRESS(prog_bar), 0);
gtk_statusbar_pop(GTK_STATUSBAR(info_bar), file_ctx);
set_display_filename(cf);
/* Enable menu items that make sense if you have a capture file you've
finished reading. */
set_menus_for_capture_file(TRUE);
set_menus_for_unsaved_capture_file(!cf->user_saved);
/* Enable menu items that make sense if you have some captured packets. */
set_menus_for_captured_packets(TRUE);
/* If we have any displayed packets to select, select the first of those
packets by making the first row the selected row. */
if (cf->first_displayed != NULL)
gtk_signal_emit_by_name(GTK_OBJECT(packet_list), "select_row", 0);
if (!success) {
/* Put up a message box noting that the read failed somewhere along
the line. Don't throw out the stuff we managed to read, though,
if any. */
switch (err) {
case WTAP_ERR_UNSUPPORTED_ENCAP:
errmsg = "The capture file is for a network type that Ethereal doesn't support.";
break;
case WTAP_ERR_CANT_READ:
errmsg = "An attempt to read from the file failed for"
" some unknown reason.";
break;
case WTAP_ERR_SHORT_READ:
errmsg = "The capture file appears to have been cut short"
" in the middle of a packet.";
break;
case WTAP_ERR_BAD_RECORD:
errmsg = "The capture file appears to be damaged or corrupt.";
break;
default:
sprintf(errmsg_errno, "An error occurred while reading the"
" capture file: %s.", wtap_strerror(err));
errmsg = errmsg_errno;
break;
}
snprintf(err_str, sizeof err_str, errmsg);
simple_dialog(ESD_TYPE_WARN, NULL, err_str);
return (err);
} else
return (0);
}
#ifdef HAVE_LIBPCAP
int
start_tail_cap_file(char *fname, gboolean is_tempfile, capture_file *cf)
{
int err;
int i;
err = open_cap_file(fname, is_tempfile, cf);
cf->plist_chunk = g_mem_chunk_new("frame_data_chunk",
sizeof(frame_data),
FRAME_DATA_CHUNK_SIZE * sizeof(frame_data),
G_ALLOC_AND_FREE);
if (err == 0) {
/* Disable menu items that make no sense if you're currently running
a capture. */
set_menus_for_capture_in_progress(TRUE);
/* Enable menu items that make sense if you have some captured
packets (yes, I know, we don't have any *yet*). */
set_menus_for_captured_packets(TRUE);
for (i = 0; i < cf->cinfo.num_cols; i++) {
if (get_column_resize_type(cf->cinfo.col_fmt[i]) == RESIZE_LIVE)
gtk_clist_set_column_auto_resize(GTK_CLIST(packet_list), i, TRUE);
else {
gtk_clist_set_column_auto_resize(GTK_CLIST(packet_list), i, FALSE);
gtk_clist_set_column_width(GTK_CLIST(packet_list), i,
cf->cinfo.col_width[i]);
gtk_clist_set_column_resizeable(GTK_CLIST(packet_list), i, TRUE);
}
}
/* Yes, "open_cap_file()" set this - but it set it to a file handle
from Wiretap, which will be closed when we close the file; we
want it to remain open even after that, so that we can read
packet data from it. */
cf->fh = file_open(fname, "rb");
gtk_statusbar_push(GTK_STATUSBAR(info_bar), file_ctx,
" <live capture in progress>");
}
return err;
}
int
continue_tail_cap_file(capture_file *cf, int to_read)
{
int err;
gtk_clist_freeze(GTK_CLIST(packet_list));
wtap_loop(cf->wth, to_read, wtap_dispatch_cb, (u_char *) cf, &err);
gtk_clist_thaw(GTK_CLIST(packet_list));
/* XXX - this cheats and looks inside the packet list to find the final
row number. */
if (auto_scroll_live && cf->plist_end != NULL)
gtk_clist_moveto(GTK_CLIST(packet_list),
GTK_CLIST(packet_list)->rows - 1, -1, 1.0, 1.0);
return err;
}
int
finish_tail_cap_file(capture_file *cf)
{
int err;
gtk_clist_freeze(GTK_CLIST(packet_list));
wtap_loop(cf->wth, 0, wtap_dispatch_cb, (u_char *) cf, &err);
thaw_clist(cf);
if (auto_scroll_live && cf->plist_end != NULL)
/* XXX - this cheats and looks inside the packet list to find the final
row number. */
gtk_clist_moveto(GTK_CLIST(packet_list),
GTK_CLIST(packet_list)->rows - 1, -1, 1.0, 1.0);
/* Set the file encapsulation type now; we don't know what it is until
we've looked at all the packets, as we don't know until then whether
there's more than one type (and thus whether it's
WTAP_ENCAP_PER_PACKET). */
cf->lnk_t = wtap_file_encap(cf->wth);
/* There's nothing more to read from the capture file - close it. */
wtap_close(cf->wth);
cf->wth = NULL;
/* Pop the "<live capture in progress>" message off the status bar. */
gtk_statusbar_pop(GTK_STATUSBAR(info_bar), file_ctx);
set_display_filename(cf);
/* Enable menu items that make sense if you're not currently running
a capture. */
set_menus_for_capture_in_progress(FALSE);
/* Enable menu items that make sense if you have a capture file
you've finished reading. */
set_menus_for_capture_file(TRUE);
set_menus_for_unsaved_capture_file(!cf->user_saved);
return err;
}
#endif /* HAVE_LIBPCAP */
typedef struct {
color_filter_t *colorf;
proto_tree *protocol_tree;
const guint8 *pd;
} apply_color_filter_args;
/*
* If no color filter has been applied, apply this one.
* (The "if no color filter has been applied" is to handle the case where
* more than one color filter matches the packet.)
*/
static void
apply_color_filter(gpointer filter_arg, gpointer argp)
{
color_filter_t *colorf = filter_arg;
apply_color_filter_args *args = argp;
if (colorf->c_colorfilter != NULL && args->colorf == NULL) {
if (dfilter_apply(colorf->c_colorfilter, args->protocol_tree, args->pd))
args->colorf = colorf;
}
}
static void
add_packet_to_packet_list(frame_data *fdata, capture_file *cf, const u_char *buf)
{
apply_color_filter_args args;
gint i, row;
proto_tree *protocol_tree = NULL;
/* We don't yet have a color filter to apply. */
args.colorf = NULL;
/* 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) {
firstsec = fdata->abs_secs;
firstusec = fdata->abs_usecs;
}
/* Get the time elapsed between the first packet and this packet. */
cf->esec = fdata->abs_secs - firstsec;
if (firstusec <= fdata->abs_usecs) {
cf->eusec = fdata->abs_usecs - firstusec;
} else {
cf->eusec = (fdata->abs_usecs + 1000000) - firstusec;
cf->esec--;
}
fdata->cinfo = &cf->cinfo;
for (i = 0; i < fdata->cinfo->num_cols; i++) {
fdata->cinfo->col_data[i][0] = '\0';
}
/* Apply the filters */
if (cf->dfcode != NULL || filter_list != NULL) {
protocol_tree = proto_tree_create_root();
dissect_packet(buf, fdata, protocol_tree);
if (cf->dfcode != NULL)
fdata->passed_dfilter = dfilter_apply(cf->dfcode, protocol_tree, buf);
else
fdata->passed_dfilter = TRUE;
/* Apply color filters, if we have any. */
if (filter_list != NULL) {
args.protocol_tree = protocol_tree;
args.pd = buf;
g_slist_foreach(filter_list, apply_color_filter, &args);
}
proto_tree_free(protocol_tree);
}
else {
#ifdef HAVE_PLUGINS
if (enabled_plugins_number > 0)
protocol_tree = proto_tree_create_root();
#endif
dissect_packet(buf, fdata, protocol_tree);
fdata->passed_dfilter = TRUE;
#ifdef HAVE_PLUGINS
if (protocol_tree)
proto_tree_free(protocol_tree);
#endif
}
if (fdata->passed_dfilter) {
/* 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) {
prevsec = fdata->abs_secs;
prevusec = fdata->abs_usecs;
}
/* Get the time elapsed between the first packet and this packet. */
fdata->rel_secs = cf->esec;
fdata->rel_usecs = cf->eusec;
/* Get the time elapsed between the previous displayed packet and
this packet. */
fdata->del_secs = fdata->abs_secs - prevsec;
if (prevusec <= fdata->abs_usecs) {
fdata->del_usecs = fdata->abs_usecs - prevusec;
} else {
fdata->del_usecs = (fdata->abs_usecs + 1000000) - prevusec;
fdata->del_secs--;
}
prevsec = fdata->abs_secs;
prevusec = fdata->abs_usecs;
fill_in_columns(fdata);
/* If we haven't yet seen the first frame, this is it.
XXX - we must do this before we add the row to the display,
as, if the display's GtkCList's selection mode is
GTK_SELECTION_BROWSE, when the first entry is added to it,
"select_packet()" will be called, and it will fetch the row
data for the 0th row, and will get a null pointer rather than
"fdata", as "gtk_clist_append()" won't yet have returned and
thus "gtk_clist_set_row_data()" won't yet have been called.
We thus need to leave behind bread crumbs so that
"select_packet()" can find this frame. See the comment
in "select_packet()". */
if (cf->first_displayed == NULL)
cf->first_displayed = fdata;
/* This is the last frame we've seen so far. */
cf->last_displayed = fdata;
row = gtk_clist_append(GTK_CLIST(packet_list), fdata->cinfo->col_data);
gtk_clist_set_row_data(GTK_CLIST(packet_list), row, fdata);
/* If this was the current frame, remember the row it's in, so
we can arrange that it's on the screen when we're done. */
if (cf->current_frame == fdata)
cf->current_row = row;
if (filter_list != NULL && (args.colorf != NULL)) {
gtk_clist_set_background(GTK_CLIST(packet_list), row,
&args.colorf->bg_color);
gtk_clist_set_foreground(GTK_CLIST(packet_list), row,
&args.colorf->fg_color);
} else {
gtk_clist_set_background(GTK_CLIST(packet_list), row, &WHITE);
gtk_clist_set_foreground(GTK_CLIST(packet_list), row, &BLACK);
}
}
fdata->cinfo = NULL;
}
static void
wtap_dispatch_cb(u_char *user, const struct wtap_pkthdr *phdr, int offset,
const u_char *buf) {
frame_data *fdata;
capture_file *cf = (capture_file *) user;
int passed;
proto_tree *protocol_tree;
frame_data *plist_end;
int file_pos;
float prog_val;
/* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
when we update it, we have to run the GTK+ main loop to get it
to repaint what's pending, and doing so may involve an "ioctl()"
to see if there's any pending input from an X server, and doing
that for every packet can be costly, especially on a big file.
Do so only if we were told to do so; when reading a capture file
being updated by a live capture, we don't do so (as we're not
"done" until the capture stops, so we don't know how close to
"done" we are. */
if (cf->update_progbar && offset >= cf->progbar_nextstep) {
file_pos = lseek(cf->filed, 0, SEEK_CUR);
prog_val = (gfloat) file_pos / (gfloat) cf->f_len;
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar), prog_val);
cf->progbar_nextstep += cf->progbar_quantum;
while (gtk_events_pending())
gtk_main_iteration();
}
/* Allocate the next list entry, and add it to the list. */
fdata = g_mem_chunk_alloc(cf->plist_chunk);
fdata->next = NULL;
fdata->prev = NULL;
fdata->pfd = NULL;
fdata->pkt_len = phdr->len;
fdata->cap_len = phdr->caplen;
fdata->file_off = offset;
fdata->lnk_t = phdr->pkt_encap;
fdata->abs_secs = phdr->ts.tv_sec;
fdata->abs_usecs = phdr->ts.tv_usec;
fdata->encoding = CHAR_ASCII;
fdata->pseudo_header = phdr->pseudo_header;
fdata->cinfo = NULL;
passed = TRUE;
if (cf->rfcode) {
protocol_tree = proto_tree_create_root();
dissect_packet(buf, fdata, protocol_tree);
passed = dfilter_apply(cf->rfcode, protocol_tree, buf);
proto_tree_free(protocol_tree);
}
if (passed) {
plist_end = cf->plist_end;
fdata->prev = plist_end;
if (plist_end != NULL)
plist_end->next = fdata;
else
cf->plist = fdata;
cf->plist_end = fdata;
cf->count++;
fdata->num = cf->count;
add_packet_to_packet_list(fdata, cf, buf);
} else {
/* XXX - if we didn't have read filters, or if we could avoid
allocating the "frame_data" structure until we knew whether
the frame passed the read filter, we could use a G_ALLOC_ONLY
memory chunk...
...but, at least in one test I did, where I just made the chunk
a G_ALLOC_ONLY chunk and read in a huge capture file, it didn't
seem to save a noticeable amount of time or space. */
g_mem_chunk_free(cf->plist_chunk, fdata);
}
}
int
filter_packets(capture_file *cf, gchar *dftext)
{
dfilter *dfcode;
if (dftext == NULL) {
/* The new filter is an empty filter (i.e., display all packets). */
dfcode = NULL;
} else {
/*
* We have a filter; try to compile it.
*/
if (dfilter_compile(dftext, &dfcode) != 0) {
/* The attempt failed; report an error. */
simple_dialog(ESD_TYPE_WARN, NULL, dfilter_error_msg);
return 0;
}
/* Was it empty? */
if (dfcode == NULL) {
/* Yes - free the filter text, and set it to null. */
g_free(dftext);
dftext = NULL;
}
}
/* We have a valid filter. Replace the current filter. */
if (cf->dfilter != NULL)
g_free(cf->dfilter);
cf->dfilter = dftext;
if (cf->dfcode != NULL)
dfilter_destroy(cf->dfcode);
cf->dfcode = dfcode;
/* Now go through the list of packets we've read from the capture file,
applying the current display filter, and, if the packet passes the
display filter, add it to the summary display, appropriately
colored. (That's how we colorize the display - it's like filtering
the display, only we don't install a new filter.) */
colorize_packets(cf);
return 1;
}
void
colorize_packets(capture_file *cf)
{
frame_data *fd;
guint32 progbar_quantum;
guint32 progbar_nextstep;
int count;
/* We need to re-initialize all the state information that protocols
keep, because we're making a fresh pass through all the packets. */
/* Initialize the table of conversations. */
conversation_init();
/* Initialize protocol-specific variables */
init_all_protocols();
gtk_progress_set_activity_mode(GTK_PROGRESS(prog_bar), FALSE);
/* Freeze the packet list while we redo it, so we don't get any
screen updates while it happens. */
gtk_clist_freeze(GTK_CLIST(packet_list));
/* Clear it out. */
gtk_clist_clear(GTK_CLIST(packet_list));
/* We don't yet know which will be the first and last frames displayed. */
cf->first_displayed = NULL;
cf->last_displayed = NULL;
/* If a packet was selected, we don't know yet what row, if any, it'll
get. */
cf->current_row = -1;
/* Iterate through the list of packets, calling a routine
to run the filter on the packet, see if it matches, and
put it in the display list if so. */
firstsec = 0;
firstusec = 0;
prevsec = 0;
prevusec = 0;
proto_tree_is_visible = FALSE;
/* Update the progress bar when it gets to this value. */
progbar_nextstep = 0;
/* When we reach the value that triggers a progress bar update,
bump that value by this amount. */
progbar_quantum = cf->count/N_PROGBAR_UPDATES;
/* Count of packets at which we've looked. */
count = 0;
gtk_progress_bar_set_orientation(GTK_PROGRESS_BAR(prog_bar), GTK_PROGRESS_LEFT_TO_RIGHT);
for (fd = cf->plist; fd != NULL; fd = fd->next) {
/* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
when we update it, we have to run the GTK+ main loop to get it
to repaint what's pending, and doing so may involve an "ioctl()"
to see if there's any pending input from an X server, and doing
that for every packet can be costly, especially on a big file. */
if (count >= progbar_nextstep) {
/* let's not divide by zero. I should never be started
* with count == 0, so let's assert that
*/
g_assert(cf->count > 0);
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar),
(gfloat) count / cf->count);
progbar_nextstep += progbar_quantum;
while (gtk_events_pending())
gtk_main_iteration();
}
count++;
wtap_seek_read (cf->cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
add_packet_to_packet_list(fd, cf, cf->pd);
}
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar), 0);
if (cf->current_row != -1) {
/* The current frame passed the filter; make sure it's visible. */
if (!gtk_clist_row_is_visible(GTK_CLIST(packet_list), cf->current_row))
gtk_clist_moveto(GTK_CLIST(packet_list), cf->current_row, -1, 0.0, 0.0);
if (cf->current_frame_is_selected) {
/* It was selected, so re-select it. */
gtk_clist_select_row(GTK_CLIST(packet_list), cf->current_row, -1);
}
finfo_selected = NULL;
} else {
/* The current frame didn't pass the filter; make the first frame
the current frame, and leave it unselected. */
unselect_packet(cf);
cf->current_frame = cf->first_displayed;
}
/* Unfreeze the packet list. */
gtk_clist_thaw(GTK_CLIST(packet_list));
}
int
print_packets(capture_file *cf, print_args_t *print_args)
{
int i;
frame_data *fd;
guint32 progbar_quantum;
guint32 progbar_nextstep;
guint32 count;
proto_tree *protocol_tree;
gint *col_widths = NULL;
gint data_width;
gboolean print_separator;
char *line_buf = NULL;
int line_buf_len = 256;
char *cp;
int column_len;
int line_len;
cf->print_fh = open_print_dest(print_args->to_file, print_args->dest);
if (cf->print_fh == NULL)
return FALSE; /* attempt to open destination failed */
print_preamble(cf->print_fh, print_args->format);
if (print_args->print_summary) {
/* We're printing packet summaries. Allocate the line buffer at
its initial length. */
line_buf = g_malloc(line_buf_len + 1);
/* Find the widths for each of the columns - maximum of the
width of the title and the width of the data - and print
the column titles. */
col_widths = (gint *) g_malloc(sizeof(gint) * cf->cinfo.num_cols);
cp = &line_buf[0];
line_len = 0;
for (i = 0; i < cf->cinfo.num_cols; i++) {
/* Don't pad the last column. */
if (i == cf->cinfo.num_cols - 1)
col_widths[i] = 0;
else {
col_widths[i] = strlen(cf->cinfo.col_title[i]);
data_width = get_column_char_width(get_column_format(i));
if (data_width > col_widths[i])
col_widths[i] = data_width;
}
/* Find the length of the string for this column. */
column_len = strlen(cf->cinfo.col_title[i]);
if (col_widths[i] > column_len)
column_len = col_widths[i];
/* Make sure there's room in the line buffer for the column; if not,
double its length. */
line_len += column_len + 1; /* "+1" for space or \n */
if (line_len > line_buf_len) {
line_buf_len *= 2;
line_buf = g_realloc(line_buf, line_buf_len + 1);
}
/* Right-justify the packet number column. */
if (cf->cinfo.col_fmt[i] == COL_NUMBER)
sprintf(cp, "%*s", col_widths[i], cf->cinfo.col_title[i]);
else
sprintf(cp, "%-*s", col_widths[i], cf->cinfo.col_title[i]);
cp += column_len;
if (i == cf->cinfo.num_cols - 1)
*cp++ = '\n';
else
*cp++ = ' ';
}
*cp = '\0';
print_line(cf->print_fh, print_args->format, line_buf);
}
print_separator = FALSE;
proto_tree_is_visible = TRUE;
/* Update the progress bar when it gets to this value. */
progbar_nextstep = 0;
/* When we reach the value that triggers a progress bar update,
bump that value by this amount. */
progbar_quantum = cf->count/N_PROGBAR_UPDATES;
/* Count of packets at which we've looked. */
count = 0;
gtk_progress_bar_set_orientation(GTK_PROGRESS_BAR(prog_bar), GTK_PROGRESS_LEFT_TO_RIGHT);
/* Iterate through the list of packets, printing the packets that
were selected by the current display filter. */
for (fd = cf->plist; fd != NULL; fd = fd->next) {
/* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
when we update it, we have to run the GTK+ main loop to get it
to repaint what's pending, and doing so may involve an "ioctl()"
to see if there's any pending input from an X server, and doing
that for every packet can be costly, especially on a big file. */
if (count >= progbar_nextstep) {
/* let's not divide by zero. I should never be started
* with count == 0, so let's assert that
*/
g_assert(cf->count > 0);
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar),
(gfloat) count / cf->count);
progbar_nextstep += progbar_quantum;
while (gtk_events_pending())
gtk_main_iteration();
}
count++;
if (fd->passed_dfilter) {
wtap_seek_read (cf->cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
if (print_args->print_summary) {
/* Fill in the column information, but don't bother creating
the logical protocol tree. */
fd->cinfo = &cf->cinfo;
for (i = 0; i < fd->cinfo->num_cols; i++) {
fd->cinfo->col_data[i][0] = '\0';
}
dissect_packet(cf->pd, fd, NULL);
fill_in_columns(fd);
cp = &line_buf[0];
line_len = 0;
for (i = 0; i < cf->cinfo.num_cols; i++) {
/* Find the length of the string for this column. */
column_len = strlen(cf->cinfo.col_data[i]);
if (col_widths[i] > column_len)
column_len = col_widths[i];
/* Make sure there's room in the line buffer for the column; if not,
double its length. */
line_len += column_len + 1; /* "+1" for space or \n */
if (line_len > line_buf_len) {
line_buf_len *= 2;
line_buf = g_realloc(line_buf, line_buf_len + 1);
}
/* Right-justify the packet number column. */
if (cf->cinfo.col_fmt[i] == COL_NUMBER)
sprintf(cp, "%*s", col_widths[i], cf->cinfo.col_data[i]);
else
sprintf(cp, "%-*s", col_widths[i], cf->cinfo.col_data[i]);
cp += column_len;
if (i == cf->cinfo.num_cols - 1)
*cp++ = '\n';
else
*cp++ = ' ';
}
*cp = '\0';
print_line(cf->print_fh, print_args->format, line_buf);
} else {
if (print_separator)
print_line(cf->print_fh, print_args->format, "\n");
/* Create the logical protocol tree. */
protocol_tree = proto_tree_create_root();
dissect_packet(cf->pd, fd, protocol_tree);
/* Print the information in that tree. */
proto_tree_print(FALSE, print_args, (GNode *)protocol_tree,
cf->pd, fd, cf->print_fh);
proto_tree_free(protocol_tree);
if (print_args->print_hex) {
/* Print the full packet data as hex. */
print_hex_data(cf->print_fh, print_args->format, cf->pd,
fd->cap_len, fd->encoding);
}
/* Print a blank line if we print anything after this. */
print_separator = TRUE;
}
}
}
if (col_widths != NULL)
g_free(col_widths);
if (line_buf != NULL)
g_free(line_buf);
print_finale(cf->print_fh, print_args->format);
close_print_dest(print_args->to_file, cf->print_fh);
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar), 0);
cf->print_fh = NULL;
return TRUE;
}
/* Scan through the packet list and change all columns that use the
"command-line-specified" time stamp format to use the current
value of that format. */
void
change_time_formats(capture_file *cf)
{
frame_data *fd;
int row;
int i;
GtkStyle *pl_style;
/* Freeze the packet list while we redo it, so we don't get any
screen updates while it happens. */
freeze_clist(cf);
/* Iterate through the list of packets, checking whether the packet
is in a row of the summary list and, if so, whether there are
any columns that show the time in the "command-line-specified"
format and, if so, update that row. */
for (fd = cf->plist; fd != NULL; fd = fd->next) {
/* Find what row this packet is in. */
row = gtk_clist_find_row_from_data(GTK_CLIST(packet_list), fd);
if (row != -1) {
/* This packet is in the summary list, on row "row". */
/* XXX - there really should be a way of checking "cf->cinfo" for this;
the answer isn't going to change from packet to packet, so we should
simply skip all the "change_time_formats()" work if we're not
changing anything. */
fd->cinfo = &cf->cinfo;
if (check_col(fd, COL_CLS_TIME)) {
/* There are columns that show the time in the "command-line-specified"
format; update them. */
for (i = 0; i < cf->cinfo.num_cols; i++) {
if (cf->cinfo.fmt_matx[i][COL_CLS_TIME]) {
/* This is one of the columns that shows the time in
"command-line-specified" format; update it. */
cf->cinfo.col_data[i][0] = '\0';
col_set_cls_time(fd, i);
gtk_clist_set_text(GTK_CLIST(packet_list), row, i,
cf->cinfo.col_data[i]);
}
}
}
}
}
/* Set the column widths of those columns that show the time in
"command-line-specified" format. */
pl_style = gtk_widget_get_style(packet_list);
for (i = 0; i < cf->cinfo.num_cols; i++) {
if (cf->cinfo.fmt_matx[i][COL_CLS_TIME]) {
gtk_clist_set_column_width(GTK_CLIST(packet_list), i,
gdk_string_width(pl_style->font, get_column_longest_string(COL_CLS_TIME)));
}
}
/* Unfreeze the packet list. */
thaw_clist(cf);
}
static void
clear_tree_and_hex_views(void)
{
/* Clear the hex dump. */
gtk_text_freeze(GTK_TEXT(byte_view));
gtk_text_set_point(GTK_TEXT(byte_view), 0);
gtk_text_forward_delete(GTK_TEXT(byte_view),
gtk_text_get_length(GTK_TEXT(byte_view)));
gtk_text_thaw(GTK_TEXT(byte_view));
/* Remove all nodes in ctree. This is how it's done in testgtk.c in GTK+ */
gtk_clist_clear ( GTK_CLIST(tree_view) );
}
gboolean
find_packet(capture_file *cf, dfilter *sfcode)
{
frame_data *start_fd;
frame_data *fd;
frame_data *new_fd = NULL;
guint32 progbar_quantum;
guint32 progbar_nextstep;
int count;
proto_tree *protocol_tree;
int row;
start_fd = cf->current_frame;
if (start_fd != NULL) {
gtk_progress_set_activity_mode(GTK_PROGRESS(prog_bar), FALSE);
/* Iterate through the list of packets, starting at the packet we've
picked, calling a routine to run the filter on the packet, see if
it matches, and stop if so. */
count = 0;
fd = start_fd;
proto_tree_is_visible = FALSE;
/* Update the progress bar when it gets to this value. */
progbar_nextstep = 0;
/* When we reach the value that triggers a progress bar update,
bump that value by this amount. */
progbar_quantum = cf->count/N_PROGBAR_UPDATES;
gtk_progress_bar_set_orientation(GTK_PROGRESS_BAR(prog_bar), GTK_PROGRESS_LEFT_TO_RIGHT);
fd = start_fd;
for (;;) {
/* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
when we update it, we have to run the GTK+ main loop to get it
to repaint what's pending, and doing so may involve an "ioctl()"
to see if there's any pending input from an X server, and doing
that for every packet can be costly, especially on a big file. */
if (count >= progbar_nextstep) {
/* let's not divide by zero. I should never be started
* with count == 0, so let's assert that
*/
g_assert(cf->count > 0);
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar),
(gfloat) count / cf->count);
progbar_nextstep += progbar_quantum;
while (gtk_events_pending())
gtk_main_iteration();
}
/* Go past the current frame. */
if (cf->sbackward) {
/* Go on to the previous frame. */
fd = fd->prev;
if (fd == NULL)
fd = cf->plist_end; /* wrap around */
} else {
/* Go on to the next frame. */
fd = fd->next;
if (fd == NULL)
fd = cf->plist; /* wrap around */
}
if (fd == start_fd) {
/* We're back to the frame we were on originally. The search
failed. */
break;
}
count++;
/* Is this packet in the display? */
if (fd->passed_dfilter) {
/* Yes. Does it match the search filter? */
protocol_tree = proto_tree_create_root();
wtap_seek_read(cf->cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
dissect_packet(cf->pd, fd, protocol_tree);
if (dfilter_apply(sfcode, protocol_tree, cf->pd)) {
new_fd = fd;
break; /* found it! */
}
}
}
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar), 0);
}
if (new_fd != NULL) {
/* We found a frame. Find what row it's in. */
row = gtk_clist_find_row_from_data(GTK_CLIST(packet_list), new_fd);
g_assert(row != -1);
/* Make it visible, and select it. */
if (!gtk_clist_row_is_visible(GTK_CLIST(packet_list), row))
gtk_clist_moveto(GTK_CLIST(packet_list), row, -1, 0.0, 0.0);
/* XXX - why is there no "gtk_clist_set_focus_row()", so that we
can make the row for the frame we found the focus row?
See
http://www.gnome.org/mailing-lists/archives/gtk-list/2000-January/0038.shtml
*/
GTK_CLIST(packet_list)->focus_row = row;
gtk_clist_select_row(GTK_CLIST(packet_list), row, -1);
return TRUE; /* success */
} else
return FALSE; /* failure */
}
goto_result_t
goto_frame(capture_file *cf, guint fnumber)
{
frame_data *fd;
int row;
for (fd = cf->plist; fd != NULL && fd->num < fnumber; fd = fd->next)
;
if (fd == NULL)
return NO_SUCH_FRAME; /* we didn't find that frame */
if (!fd->passed_dfilter)
return FRAME_NOT_DISPLAYED; /* the frame with that number isn't displayed */
/* We found that frame, and it's currently being displayed.
Find what row it's in. */
row = gtk_clist_find_row_from_data(GTK_CLIST(packet_list), fd);
g_assert(row != -1);
/* Make it visible, and select it. */
if (!gtk_clist_row_is_visible(GTK_CLIST(packet_list), row))
gtk_clist_moveto(GTK_CLIST(packet_list), row, -1, 0.0, 0.0);
/* See above complaint about the lack of "gtk_clist_set_focus_row()". */
GTK_CLIST(packet_list)->focus_row = row;
gtk_clist_select_row(GTK_CLIST(packet_list), row, -1);
return FOUND_FRAME;
}
/* Select the packet on a given row. */
void
select_packet(capture_file *cf, int row)
{
frame_data *fd;
/* Get the frame data struct pointer for this frame */
fd = (frame_data *) gtk_clist_get_row_data(GTK_CLIST(packet_list), row);
if (fd == NULL) {
/* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
the first entry is added to it by "real_insert_row()", that row
is selected (see "real_insert_row()", in "gtk/gtkclist.c", in both
our version and the vanilla GTK+ version).
This means that a "select-row" signal is emitted; this causes
"packet_list_select_cb()" to be called, which causes "select_packet()"
to be called.
"select_packet()" fetches, above, the data associated with the
row that was selected; however, as "gtk_clist_append()", which
called "real_insert_row()", hasn't yet returned, we haven't yet
associated any data with that row, so we get back a null pointer.
We can't assume that there's only one frame in the frame list,
either, as we may be filtering the display.
We therefore assume that, if "row" is 0, i.e. the first row
is being selected, and "cf->first_displayed" equals
"cf->last_displayed", i.e. there's only one frame being
displayed, that frame is the frame we want.
This means we have to set "cf->first_displayed" and
"cf->last_displayed" before adding the row to the
GtkCList; see the comment in "add_packet_to_packet_list()". */
if (row == 0 && cf->first_displayed == cf->last_displayed)
fd = cf->first_displayed;
}
/* Record that this frame is the current frame, and that it's selected. */
cf->current_frame = fd;
cf->current_frame_is_selected = TRUE;
/* Get the data in that frame. */
wtap_seek_read (cf->cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
/* Create the logical protocol tree. */
if (cf->protocol_tree)
proto_tree_free(cf->protocol_tree);
cf->protocol_tree = proto_tree_create_root();
proto_tree_is_visible = TRUE;
dissect_packet(cf->pd, cf->current_frame, cf->protocol_tree);
/* Display the GUI protocol tree and hex dump. */
clear_tree_and_hex_views();
proto_tree_draw(cf->protocol_tree, tree_view);
packet_hex_print(GTK_TEXT(byte_view), cf->pd, cf->current_frame->cap_len,
-1, -1, cf->current_frame->encoding);
/* A packet is selected. */
set_menus_for_selected_packet(TRUE);
}
/* Unselect the selected packet, if any. */
void
unselect_packet(capture_file *cf)
{
cf->current_frame_is_selected = FALSE;
/* Destroy the protocol tree for that packet. */
if (cf->protocol_tree != NULL) {
proto_tree_free(cf->protocol_tree);
cf->protocol_tree = NULL;
}
finfo_selected = NULL;
/* Clear out the display of that packet. */
clear_tree_and_hex_views();
/* No packet is selected. */
set_menus_for_selected_packet(FALSE);
}
static void
freeze_clist(capture_file *cf)
{
int i;
/* Make the column sizes static, so they don't adjust while
we're reading the capture file (freezing the clist doesn't
seem to suffice). */
for (i = 0; i < cf->cinfo.num_cols; i++)
gtk_clist_set_column_auto_resize(GTK_CLIST(packet_list), i, FALSE);
gtk_clist_freeze(GTK_CLIST(packet_list));
}
static void
thaw_clist(capture_file *cf)
{
int i;
for (i = 0; i < cf->cinfo.num_cols; i++) {
if (get_column_resize_type(cf->cinfo.col_fmt[i]) == RESIZE_MANUAL) {
/* Set this column's width to the appropriate value. */
gtk_clist_set_column_width(GTK_CLIST(packet_list), i,
cf->cinfo.col_width[i]);
} else {
/* Make this column's size dynamic, so that it adjusts to the
appropriate size. */
gtk_clist_set_column_auto_resize(GTK_CLIST(packet_list), i, TRUE);
}
}
gtk_clist_thaw(GTK_CLIST(packet_list));
/* Hopefully, the columns have now gotten their appropriate sizes;
make them resizeable - a column that auto-resizes cannot be
resized by the user, and *vice versa*. */
for (i = 0; i < cf->cinfo.num_cols; i++)
gtk_clist_set_column_resizeable(GTK_CLIST(packet_list), i, TRUE);
}
int
save_cap_file(char *fname, capture_file *cf, gboolean save_filtered,
guint save_format)
{
gchar *from_filename;
gchar *name_ptr, *save_msg, *save_fmt = " Saving: %s...";
size_t msg_len;
int err;
gboolean do_copy;
int from_fd, to_fd, nread, nwritten;
wtap_dumper *pdh;
frame_data *fd;
struct wtap_pkthdr hdr;
guint8 pd[65536];
name_ptr = get_basename(fname);
msg_len = strlen(name_ptr) + strlen(save_fmt) + 2;
save_msg = g_malloc(msg_len);
snprintf(save_msg, msg_len, save_fmt, name_ptr);
gtk_statusbar_push(GTK_STATUSBAR(info_bar), file_ctx, save_msg);
g_free(save_msg);
if (!save_filtered && save_format == cf->cd_t) {
/* We're not filtering packets, and we're saving it in the format
it's already in, so we can just move or copy the raw data. */
/* In this branch, we set "err" only if we get an error, so we
must first clear it. */
err = 0;
if (cf->is_tempfile) {
/* The file being saved is a temporary file from a live
capture, so it doesn't need to stay around under that name;
first, try renaming the capture buffer file to the new name. */
#ifndef WIN32
if (rename(cf->filename, fname) == 0) {
/* That succeeded - there's no need to copy the source file. */
from_filename = NULL;
do_copy = FALSE;
} else {
if (errno == EXDEV) {
/* They're on different file systems, so we have to copy the
file. */
do_copy = TRUE;
from_filename = cf->filename;
} else {
/* The rename failed, but not because they're on different
file systems - put up an error message. (Or should we
just punt and try to copy? The only reason why I'd
expect the rename to fail and the copy to succeed would
be if we didn't have permission to remove the file from
the temporary directory, and that might be fixable - but
is it worth requiring the user to go off and fix it?) */
err = errno;
simple_dialog(ESD_TYPE_WARN, NULL,
file_rename_error_message(err), fname);
goto done;
}
}
#else
do_copy = TRUE;
from_filename = cf->filename;
#endif
} else {
/* It's a permanent file, so we should copy it, and not remove the
original. */
do_copy = TRUE;
from_filename = cf->filename;
}
/* Copy the file, if we haven't moved it. */
if (do_copy) {
/* Copy the raw bytes of the file. */
from_fd = open(from_filename, O_RDONLY | O_BINARY);
if (from_fd < 0) {
err = errno;
simple_dialog(ESD_TYPE_WARN, NULL,
file_open_error_message(err, TRUE), from_filename);
goto done;
}
/* Use open() instead of creat() so that we can pass the O_BINARY
flag, which is relevant on Win32; it appears that "creat()"
may open the file in text mode, not binary mode, but we want
to copy the raw bytes of the file, so we need the output file
to be open in binary mode. */
to_fd = open(fname, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
if (to_fd < 0) {
err = errno;
simple_dialog(ESD_TYPE_WARN, NULL,
file_open_error_message(err, TRUE), fname);
close(from_fd);
goto done;
}
while ((nread = read(from_fd, pd, sizeof pd)) > 0) {
nwritten = write(to_fd, pd, nread);
if (nwritten < nread) {
if (nwritten < 0)
err = errno;
else
err = WTAP_ERR_SHORT_WRITE;
simple_dialog(ESD_TYPE_WARN, NULL,
file_write_error_message(err), fname);
close(from_fd);
close(to_fd);
goto done;
}
}
if (nread < 0) {
err = errno;
simple_dialog(ESD_TYPE_WARN, NULL,
file_read_error_message(err), from_filename);
close(from_fd);
close(to_fd);
goto done;
}
close(from_fd);
if (close(to_fd) < 0) {
err = errno;
simple_dialog(ESD_TYPE_WARN, NULL,
file_close_error_message(err), fname);
goto done;
}
}
} else {
/* Either we're filtering packets, or we're saving in a different
format; we can't do that by copying or moving the capture file,
we have to do it by writing the packets out in Wiretap. */
pdh = wtap_dump_open(fname, save_format, cf->lnk_t, cf->snap, &err);
if (pdh == NULL) {
simple_dialog(ESD_TYPE_WARN, NULL,
file_open_error_message(err, TRUE), fname);
goto done;
}
/* XXX - have a way to save only the packets currently selected by
the display filter.
If we do that, should we make that file the current file? If so,
it means we can no longer get at the other packets. What does
NetMon do? */
for (fd = cf->plist; fd != NULL; fd = fd->next) {
/* XXX - do a progress bar */
if (!save_filtered || fd->passed_dfilter) {
/* Either we're saving all frames, or we're saving filtered frames
and this one passed the display filter - save it. */
hdr.ts.tv_sec = fd->abs_secs;
hdr.ts.tv_usec = fd->abs_usecs;
hdr.caplen = fd->cap_len;
hdr.len = fd->pkt_len;
hdr.pkt_encap = fd->lnk_t;
hdr.pseudo_header = fd->pseudo_header;
wtap_seek_read(cf->cd_t, cf->fh, fd->file_off, pd, fd->cap_len);
if (!wtap_dump(pdh, &hdr, pd, &err)) {
simple_dialog(ESD_TYPE_WARN, NULL,
file_write_error_message(err), fname);
wtap_dump_close(pdh, &err);
goto done;
}
}
}
if (!wtap_dump_close(pdh, &err)) {
simple_dialog(ESD_TYPE_WARN, NULL,
file_close_error_message(err), fname);
goto done;
}
}
done:
/* Pop the "Saving:" message off the status bar. */
gtk_statusbar_pop(GTK_STATUSBAR(info_bar), file_ctx);
if (err == 0) {
if (!save_filtered) {
/* We saved the entire capture, not just some packets from it.
Open and read the file we saved it to.
XXX - this is somewhat of a waste; we already have the
packets, all this gets us is updated file type information
(which we could just stuff into "cf"), and having the new
file be the one we have opened and from which we're reading
the data, and it means we have to spend time opening and
reading the file, which could be a significant amount of
time if the file is large. */
cf->user_saved = TRUE;
if ((err = open_cap_file(fname, FALSE, cf)) == 0) {
/* XXX - report errors if this fails? */
err = read_cap_file(cf);
set_menus_for_unsaved_capture_file(FALSE);
}
}
}
return err;
}
char *
file_open_error_message(int err, int for_writing)
{
char *errmsg;
static char errmsg_errno[1024+1];
switch (err) {
case WTAP_ERR_NOT_REGULAR_FILE:
errmsg = "The file \"%s\" is invalid.";
break;
case WTAP_ERR_FILE_UNKNOWN_FORMAT:
case WTAP_ERR_UNSUPPORTED:
/* Seen only when opening a capture file for reading. */
errmsg = "The file \"%s\" is not a capture file in a format Ethereal understands.";
break;
case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
/* Seen only when opening a capture file for writing. */
errmsg = "Ethereal does not support writing capture files in that format.";
break;
case WTAP_ERR_UNSUPPORTED_ENCAP:
case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
if (for_writing)
errmsg = "Ethereal cannot save this capture in that format.";
else
errmsg = "The file \"%s\" is a capture for a network type that Ethereal doesn't support.";
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"
" in the middle of a packet.";
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\".";
break;
default:
sprintf(errmsg_errno, "The file \"%%s\" could not be opened: %s.",
wtap_strerror(err));
errmsg = errmsg_errno;
break;
}
return errmsg;
}
static char *
file_rename_error_message(int err)
{
char *errmsg;
static char errmsg_errno[1024+1];
switch (err) {
case ENOENT:
errmsg = "The path to the file \"%s\" does not exist.";
break;
case EACCES:
errmsg = "You do not have permission to move the capture file to \"%s\".";
break;
default:
sprintf(errmsg_errno, "The file \"%%s\" could not be moved: %s.",
wtap_strerror(err));
errmsg = errmsg_errno;
break;
}
return errmsg;
}
char *
file_read_error_message(int err)
{
static char errmsg_errno[1024+1];
sprintf(errmsg_errno, "An error occurred while reading from the file \"%%s\": %s.",
wtap_strerror(err));
return errmsg_errno;
}
char *
file_write_error_message(int err)
{
char *errmsg;
static char errmsg_errno[1024+1];
switch (err) {
case ENOSPC:
errmsg = "The file \"%s\" could not be saved because there is no space left on the file system.";
break;
#ifdef EDQUOT
case EDQUOT:
errmsg = "The file \"%s\" could not be saved because you are too close to, or over, your disk quota.";
break;
#endif
default:
sprintf(errmsg_errno, "An error occurred while writing to the file \"%%s\": %s.",
wtap_strerror(err));
errmsg = errmsg_errno;
break;
}
return errmsg;
}
/* Check for write errors - if the file is being written to an NFS server,
a write error may not show up until the file is closed, as NFS clients
might not send writes to the server until the "write()" call finishes,
so that the write may fail on the server but the "write()" may succeed. */
static char *
file_close_error_message(int err)
{
char *errmsg;
static char errmsg_errno[1024+1];
switch (err) {
case WTAP_ERR_CANT_CLOSE:
errmsg = "The file \"%s\" couldn't be closed for some unknown reason.";
break;
case WTAP_ERR_SHORT_WRITE:
errmsg = "Not all the data could be written to the file \"%s\".";
break;
case ENOSPC:
errmsg = "The file \"%s\" could not be saved because there is no space left on the file system.";
break;
#ifdef EDQUOT
case EDQUOT:
errmsg = "The file \"%s\" could not be saved because you are too close to, or over, your disk quota.";
break;
#endif
default:
sprintf(errmsg_errno, "An error occurred while closing the file \"%%s\": %s.",
wtap_strerror(err));
errmsg = errmsg_errno;
break;
}
return errmsg;
}
- References:
- Re: [ethereal-dev] problem with 'live' captures and latest CVS.
- From: Gilbert Ramirez
- Re: [ethereal-dev] problem with 'live' captures and latest CVS.
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