/* dnd.c
* Drag and Drop
*
* $Id: drag_and_drop.c 22733 2007-08-30 00:24:40Z gerald $
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.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
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <gtk/gtk.h>
#include "globals.h"
#include "gtkglobals.h"
#include "util.h"
#include "capture_file_dlg.h"
#include "../menu.h"
#include "compat_macros.h"
#include "file.h"
#include "simple_dialog.h"
#include "main.h"
#ifdef HAVE_LIBPCAP
#include "capture.h"
#endif
#include <epan/prefs.h>
#include <string.h>
#include <stdio.h>
enum { DND_TARGET_STRING, DND_TARGET_ROOTWIN, DND_TARGET_URL };
/* convert drag and drop URI to a local filename */
static gchar *
dnd_uri2filename(gchar *cf_name)
{
gchar *src, *dest;
gint ret;
guint i;
gchar esc[3];
/* Remove URI header.
* we have to remove the prefix to get a valid filename. */
#ifdef _WIN32
/*
* On win32 (at least WinXP), this prefix looks like (UNC):
* file:////servername/sharename/dir1/dir2/capture-file.cap
* or (local filename):
* file:///d:/dir1/dir2/capture-file.cap
*/
if (strncmp("file:////", cf_name, 9) == 0) {
/* win32 UNC: now becoming: //servername/sharename/dir1/dir2/capture-file.cap */
cf_name += 7;
} else if (strncmp("file:///", cf_name, 8) == 0) {
/* win32 local: now becoming: d:/dir1/dir2/capture-file.cap */
cf_name += 8;
}
#else
/*
* On UNIX (at least KDE 3.0 Konqueror), this prefix looks like:
* file:/dir1/dir2/capture-file.cap
*
* On UNIX (at least GNOME Nautilus 2.8.2), this prefix looks like:
* file:///dir1/dir2/capture-file.cap
*/
if (strncmp("file:", cf_name, 5) == 0) {
/* now becoming: /dir1/dir2/capture-file.cap or ///dir1/dir2/capture-file.cap */
cf_name += 5;
/* shorten //////thing to /thing */
for(; cf_name[1] == '/'; ++cf_name);
}
#endif
/*
* unescape the escaped URI characters (spaces, ...)
*
* we have to replace escaped chars to their equivalents,
* e.g. %20 (always a two digit hexstring) -> ' '
* the percent character '%' is escaped be a double one "%%"
*
* we do this conversation "in place" as the result is always
* equal or smaller in size.
*/
src = cf_name;
dest = cf_name;
while (*src) {
if (*src == '%') {
src++;
if (*src == '%') {
/* this is an escaped '%' char (was: "%%") */
*dest = *src;
src++;
dest++;
} else {
/* convert escaped hexnumber to unscaped character */
esc[0] = src[0];
esc[1] = src[1];
esc[2] = '\0';
ret = sscanf(esc, "%x", &i);
if (ret == 1) {
src+=2;
*dest = (gchar) i;
dest++;
} else {
/* somethings wrong, just jump over that char
* this will result in a wrong string, but we might get
* user feedback and can fix it later ;-) */
src++;
}
}
} else {
*dest = *src;
src++;
dest++;
}
}
*dest = '\0';
return cf_name;
}
static void
dnd_merge_files(int in_file_count, char **in_filenames)
{
char *tmpname;
cf_status_t merge_status;
int err;
/* merge the files in chonological order */
tmpname = NULL;
merge_status = cf_merge_files(&tmpname, in_file_count, in_filenames,
WTAP_FILE_PCAP, FALSE);
if (merge_status != CF_OK) {
/* merge failed */
g_free(tmpname);
return;
}
cf_close(&cfile);
/* Try to open the merged capture file. */
if (cf_open(&cfile, tmpname, TRUE /* temporary file */, &err) != CF_OK) {
/* We couldn't open it; don't dismiss the open dialog box,
just leave it around so that the user can, after they
dismiss the alert box popped up for the open error,
try again. */
g_free(tmpname);
return;
}
g_free(tmpname);
switch (cf_read(&cfile)) {
case CF_READ_OK:
case CF_READ_ERROR:
/* Just because we got an error, that doesn't mean we were unable
to read any of the file; we handle what we could get from the
file. */
break;
case CF_READ_ABORTED:
/* The user bailed out of re-reading the capture file; the
capture file has been closed - just free the capture file name
string and return (without changing the last containing
directory). */
return;
}
gtk_widget_grab_focus(packet_list);
}
/* open/merge the dnd file */
void
dnd_open_file_cmd(gchar *cf_names_freeme)
{
int err;
gchar *cf_name;
int in_files;
gpointer dialog;
GString *dialog_text;
int files_work;
char **in_filenames;
/* DND_TARGET_URL on Win32:
* The cf_name_freeme is a single string, containing one or more URI's,
* seperated by CR/NL chars. The length of the whole field can be found
* in the selection_data->length field. If it contains one file, simply open it,
* If it contains more than one file, ask to merge these files. */
/* count the number of input files */
cf_name = cf_names_freeme;
for(in_files = 0; (cf_name = strstr(cf_name, "\r\n")) != NULL; ) {
cf_name += 2;
in_files++;
}
in_filenames = g_malloc(sizeof(char*) * in_files);
/* store the starts of the file entries in a gchar array */
cf_name = cf_names_freeme;
in_filenames[0] = cf_name;
for(files_work = 1; (cf_name = strstr(cf_name, "\r\n")) != NULL && files_work < in_files; ) {
cf_name += 2;
in_filenames[files_work] = cf_name;
files_work++;
}
/* replace trailing CR NL simply with zeroes (in place), so we get valid terminated strings */
cf_name = cf_names_freeme;
g_strdelimit(cf_name, "\r\n", '\0');
/* convert all filenames from URI to local filename (in place) */
for(files_work = 0; files_work < in_files; files_work++) {
in_filenames[files_work] = dnd_uri2filename(in_filenames[files_work]);
}
switch(in_files) {
case(0):
/* shouldn't happen */
break;
case(1):
/* open and read the capture file (this will close an existing file) */
if (cf_open(&cfile, in_filenames[0], FALSE, &err) == CF_OK) {
/* XXX - add this to the menu if the read fails? */
cf_read(&cfile);
add_menu_recent_capture_file(in_filenames[0]);
} else {
/* the capture file couldn't be read (doesn't exist, file format unknown, ...) */
}
break;
default:
/* build and show the info dialog */
dialog_text = g_string_sized_new(200);
g_string_append(dialog_text, PRIMARY_TEXT_START
"Merging the following files:" PRIMARY_TEXT_END "\n\n");
for(files_work = 0; files_work < in_files; files_work++) {
g_string_append(dialog_text, in_filenames[files_work]);
g_string_append(dialog_text, "\n");
}
g_string_append(dialog_text, "\nThe packets in these files will be merged chronologically into a new temporary file.");
dialog = simple_dialog(ESD_TYPE_CONFIRMATION,
ESD_BTN_OK,
dialog_text->str);
g_string_free(dialog_text, TRUE);
/* actually merge the files now */
dnd_merge_files(in_files, in_filenames);
}
g_free(in_filenames);
g_free(cf_names_freeme);
}
/* ask the user to save current unsaved file, before opening the dnd file */
static void
dnd_save_file_answered_cb(gpointer dialog _U_, gint btn, gpointer data)
{
switch(btn) {
case(ESD_BTN_SAVE):
/* save file first */
file_save_as_cmd(after_save_open_dnd_file, data);
break;
case(ESD_BTN_DONT_SAVE):
cf_close(&cfile);
dnd_open_file_cmd(data);
break;
case(ESD_BTN_CANCEL):
break;
default:
g_assert_not_reached();
}
}
/* we have received some drag and drop data */
/* (as we only registered to "text/uri-list", we will only get a file list here) */
static void
dnd_data_received(GtkWidget *widget _U_, GdkDragContext *dc _U_, gint x _U_, gint y _U_,
GtkSelectionData *selection_data, guint info, guint t _U_, gpointer data _U_)
{
gpointer dialog;
gchar *cf_names_freeme;
if (info == DND_TARGET_URL) {
/* Usually we block incoming events by disabling the corresponding menu/toolbar items.
* This is the only place where an incoming event won't be blocked in such a way,
* so we have to take care of NOT loading a new file while a different process
* (e.g. capture/load/...) is still in progress. */
#ifdef HAVE_LIBPCAP
/* if a capture is running, do nothing but warn the user */
if((capture_opts->state != CAPTURE_STOPPED)) {
dialog = simple_dialog(ESD_TYPE_CONFIRMATION,
ESD_BTN_OK,
PRIMARY_TEXT_START "Drag and Drop currently not possible!" PRIMARY_TEXT_END "\n\n"
"Dropping a file isn't possible while a capture is in progress.");
return;
}
#endif
/* if another file read is still in progress, do nothing but warn the user */
if((cfile.state == FILE_READ_IN_PROGRESS)) {
dialog = simple_dialog(ESD_TYPE_CONFIRMATION,
ESD_BTN_OK,
PRIMARY_TEXT_START "Drag and Drop currently not possible!" PRIMARY_TEXT_END "\n\n"
"Dropping a file isn't possible while loading another capture file.");
return;
}
/* the selection_data will soon be gone, make a copy first */
/* the data string is not zero terminated -> make a zero terminated "copy" of it */
cf_names_freeme = g_malloc(selection_data->length + 1);
memcpy(cf_names_freeme, selection_data->data, selection_data->length);
cf_names_freeme[selection_data->length] = '\0';
/* ask the user to save it's current capture file first */
if((cfile.state != FILE_CLOSED) && !cfile.user_saved && prefs.gui_ask_unsaved) {
/* user didn't saved his current file, ask him */
dialog = simple_dialog(ESD_TYPE_CONFIRMATION,
ESD_BTNS_SAVE_DONTSAVE_CANCEL,
PRIMARY_TEXT_START "Save capture file before opening a new one?" PRIMARY_TEXT_END "\n\n"
"If you open a new capture file without saving, your current capture data will be discarded.");
simple_dialog_set_cb(dialog, dnd_save_file_answered_cb, cf_names_freeme );
} else {
/* unchanged file */
dnd_open_file_cmd( cf_names_freeme );
}
}
}
/* init the drag and drop functionality */
void
dnd_init(GtkWidget *w)
{
/* we are only interested in the URI list containing filenames */
static GtkTargetEntry target_entry[] = {
/*{"STRING", 0, DND_TARGET_STRING},*/
/*{"text/plain", 0, DND_TARGET_STRING},*/
{"text/uri-list", 0, DND_TARGET_URL}
};
/* set this window as a dnd destination */
gtk_drag_dest_set(
w, GTK_DEST_DEFAULT_ALL, target_entry,
sizeof(target_entry) / sizeof(GtkTargetEntry),
(GdkDragAction)(GDK_ACTION_MOVE | GDK_ACTION_COPY) );
/* get notified, if some dnd coming in */
gtk_signal_connect(GTK_OBJECT(w), "drag_data_received",
GTK_SIGNAL_FUNC(dnd_data_received), NULL);
}
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