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wireshark/util.c
Guy Harris 70cd911f61 In "try_tempfile()", if the buffer is too short for the temporary file 
name, stuff as much of the name as will fit into the buffer before
returning an error, so the error message that gets displayed isn't
completely mangled.

svn path=/trunk/; revision=716
1999-09-24 04:14:43 +00:00

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7.3 KiB
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/* util.c
* Utility routines
*
* $Id: util.c,v 1.21 1999/09/24 04:14:43 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* 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 <glib.h>
#include <gtk/gtk.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef NEED_SNPRINTF_H
# ifdef HAVE_STDARG_H
# include <stdarg.h>
# else
# include <varargs.h>
# endif
# include "snprintf.h"
#endif
#include "util.h"
#include "image/icon-excl.xpm"
#include "image/icon-ethereal.xpm"
static void simple_dialog_cancel_cb(GtkWidget *, gpointer);
const gchar *bm_key = "button mask";
/* Simple dialog function - Displays a dialog box with the supplied message
* text.
*
* Args:
* type : One of ESD_TYPE_*.
* btn_mask : The address of a gint. The value passed in determines if
* the 'Cancel' button is displayed. The button pressed by the
* user is passed back.
* msg_format : Sprintf-style format of the text displayed in the dialog.
* ... : Argument list for msg_format
*
*/
#define ESD_MAX_MSG_LEN 2048
void
simple_dialog(gint type, gint *btn_mask, gchar *msg_format, ...) {
GtkWidget *win, *main_vb, *top_hb, *type_pm, *msg_label,
*bbox, *ok_btn, *cancel_btn;
GdkPixmap *pixmap;
GdkBitmap *mask;
GtkStyle *style;
GdkColormap *cmap;
va_list ap;
gchar message[ESD_MAX_MSG_LEN];
gchar **icon;
/* Main window */
win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_container_border_width(GTK_CONTAINER(win), 7);
switch (type) {
case ESD_TYPE_WARN :
gtk_window_set_title(GTK_WINDOW(win), "Ethereal: Warning");
icon = icon_excl_xpm;
break;
case ESD_TYPE_CRIT :
gtk_window_set_title(GTK_WINDOW(win), "Ethereal: Critical");
icon = icon_excl_xpm;
break;
case ESD_TYPE_INFO :
default :
icon = icon_ethereal_xpm;
gtk_window_set_title(GTK_WINDOW(win), "Ethereal: Information");
break;
}
gtk_object_set_data(GTK_OBJECT(win), bm_key, btn_mask);
/* Container for our rows */
main_vb = gtk_vbox_new(FALSE, 5);
gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
gtk_container_add(GTK_CONTAINER(win), main_vb);
gtk_widget_show(main_vb);
/* Top row: Icon and message text */
top_hb = gtk_hbox_new(FALSE, 10);
gtk_container_add(GTK_CONTAINER(main_vb), top_hb);
gtk_widget_show(top_hb);
style = gtk_widget_get_style(win);
cmap = gdk_colormap_get_system();
pixmap = gdk_pixmap_colormap_create_from_xpm_d(NULL, cmap, &mask,
&style->bg[GTK_STATE_NORMAL], icon);
type_pm = gtk_pixmap_new(pixmap, mask);
gtk_misc_set_alignment (GTK_MISC (type_pm), 0.5, 0.0);
gtk_container_add(GTK_CONTAINER(top_hb), type_pm);
gtk_widget_show(type_pm);
/* Load our vararg list into the message string */
va_start(ap, msg_format);
vsnprintf(message, ESD_MAX_MSG_LEN, msg_format, ap);
msg_label = gtk_label_new(message);
gtk_label_set_justify(GTK_LABEL(msg_label), GTK_JUSTIFY_FILL);
gtk_container_add(GTK_CONTAINER(top_hb), msg_label);
gtk_widget_show(msg_label);
/* Button row */
bbox = gtk_hbutton_box_new();
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
gtk_container_add(GTK_CONTAINER(main_vb), bbox);
gtk_widget_show(bbox);
ok_btn = gtk_button_new_with_label ("OK");
gtk_signal_connect_object(GTK_OBJECT(ok_btn), "clicked",
GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT (win));
gtk_container_add(GTK_CONTAINER(bbox), ok_btn);
GTK_WIDGET_SET_FLAGS(ok_btn, GTK_CAN_DEFAULT);
gtk_widget_grab_default(ok_btn);
gtk_widget_show(ok_btn);
if (btn_mask && *btn_mask == ESD_BTN_CANCEL) {
cancel_btn = gtk_button_new_with_label("Cancel");
gtk_signal_connect(GTK_OBJECT(cancel_btn), "clicked",
GTK_SIGNAL_FUNC(simple_dialog_cancel_cb), (gpointer) win);
gtk_container_add(GTK_CONTAINER(bbox), cancel_btn);
GTK_WIDGET_SET_FLAGS(cancel_btn, GTK_CAN_DEFAULT);
gtk_widget_show(cancel_btn);
}
if (btn_mask)
*btn_mask = ESD_BTN_OK;
gtk_widget_show(win);
}
static void
simple_dialog_cancel_cb(GtkWidget *w, gpointer win) {
gint *btn_mask = (gint *) gtk_object_get_data(win, bm_key);
if (btn_mask)
*btn_mask = ESD_BTN_CANCEL;
gtk_widget_destroy(GTK_WIDGET(win));
}
static char *
setup_tmpdir(char *dir)
{
int len = strlen(dir);
char *newdir;
/* Append slash if necessary */
if (dir[len - 1] == '/') {
newdir = dir;
}
else {
newdir = g_malloc(len + 2);
strcpy(newdir, dir);
strcat(newdir, "/");
}
return newdir;
}
static int
try_tempfile(char *namebuf, int namebuflen, const char *dir, const char *pfx)
{
static const char suffix[] = "XXXXXXXXXX";
int namelen = strlen(dir) + strlen(pfx) + sizeof suffix;
mode_t old_umask;
int tmp_fd;
if (namebuflen < namelen) {
/* Stick in a truncated name, so that if this error is
reported with the file name, you at least get
something. */
snprintf(namebuf, namebuflen, "%s%s%s", dir, pfx, suffix);
errno = ENAMETOOLONG;
return -1;
}
strcpy(namebuf, dir);
strcat(namebuf, pfx);
strcat(namebuf, suffix);
/* The Single UNIX Specification doesn't say that "mkstemp()"
creates the temporary file with mode rw-------, so we
won't assume that all UNIXes will do so; instead, we set
the umask to 0077 to take away all group and other
permissions, attempt to create the file, and then put
the umask back. */
old_umask = umask(0077);
tmp_fd = mkstemp(namebuf);
umask(old_umask);
return tmp_fd;
}
static char *tmpdir = NULL;
#ifdef WIN32
static char *temp = NULL;
#endif
static char *E_tmpdir;
#ifndef P_tmpdir
#define P_tmpdir "/var/tmp"
#endif
int
create_tempfile(char *namebuf, int namebuflen, const char *pfx)
{
char *dir;
int fd;
static gboolean initialized;
if (!initialized) {
if ((dir = getenv("TMPDIR")) != NULL)
tmpdir = setup_tmpdir(dir);
#ifdef WIN32
if ((dir = getenv("TEMP")) != NULL)
temp = setup_tmpdir(dir);
#endif
E_tmpdir = setup_tmpdir(P_tmpdir);
initialized = TRUE;
}
if (tmpdir != NULL) {
fd = try_tempfile(namebuf, namebuflen, tmpdir, pfx);
if (fd != -1)
return fd;
}
#ifdef WIN32
if (temp != NULL) {
fd = try_tempfile(namebuf, namebuflen, temp, pfx);
if (fd != -1)
return fd;
}
#endif
fd = try_tempfile(namebuf, namebuflen, E_tmpdir, pfx);
if (fd != -1)
return fd;
return try_tempfile(namebuf, namebuflen, "/tmp", pfx);
}
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