forked from osmocom/wireshark
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/* export_object_ui.c
|
|
* Common routines for tracking & saving objects found in streams of data
|
|
* Copyright 2007, Stephen Fisher (see AUTHORS file)
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <glib.h>
|
|
|
|
#include <epan/packet_info.h>
|
|
#include <epan/tap.h>
|
|
|
|
#include <wiretap/wtap.h>
|
|
|
|
#include <wsutil/file_util.h>
|
|
|
|
#include <ui/alert_box.h>
|
|
|
|
#include "export_object_ui.h"
|
|
|
|
gboolean
|
|
eo_save_entry(const gchar *save_as_filename, export_object_entry_t *entry, gboolean show_err)
|
|
{
|
|
int to_fd;
|
|
gint64 bytes_left;
|
|
int bytes_to_write;
|
|
ssize_t bytes_written;
|
|
guint8 *ptr;
|
|
int err;
|
|
|
|
to_fd = ws_open(save_as_filename, O_WRONLY | O_CREAT | O_EXCL |
|
|
O_BINARY, 0644);
|
|
if(to_fd == -1) { /* An error occurred */
|
|
if (show_err)
|
|
open_failure_alert_box(save_as_filename, errno, TRUE);
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* The third argument to _write() on Windows is an unsigned int,
|
|
* so, on Windows, that's the size of the third argument to
|
|
* ws_write().
|
|
*
|
|
* The third argument to write() on UN*X is a size_t, although
|
|
* the return value is an ssize_t, so one probably shouldn't
|
|
* write more than the max value of an ssize_t.
|
|
*
|
|
* In either case, there's no guarantee that a gint64 such as
|
|
* payload_len can be passed to ws_write(), so we write in
|
|
* chunks of, at most 2^31 bytes.
|
|
*/
|
|
ptr = entry->payload_data;
|
|
bytes_left = entry->payload_len;
|
|
while (bytes_left != 0) {
|
|
if (bytes_left > 0x40000000)
|
|
bytes_to_write = 0x40000000;
|
|
else
|
|
bytes_to_write = (int)bytes_left;
|
|
bytes_written = ws_write(to_fd, ptr, bytes_to_write);
|
|
if(bytes_written <= 0) {
|
|
if (bytes_written < 0)
|
|
err = errno;
|
|
else
|
|
err = WTAP_ERR_SHORT_WRITE;
|
|
if (show_err)
|
|
write_failure_alert_box(save_as_filename, err);
|
|
ws_close(to_fd);
|
|
return FALSE;
|
|
}
|
|
bytes_left -= bytes_written;
|
|
ptr += bytes_written;
|
|
}
|
|
if (ws_close(to_fd) < 0) {
|
|
if (show_err)
|
|
write_failure_alert_box(save_as_filename, errno);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|