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wireshark/gtk/webbrowser.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Web Browser Plug-in
* Copyright (C) 2003 Henrik Brix Andersen <brix@gimp.org>
*
* $Id$
*
* 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.
*/
/* Wireshark - this file is copied from "The GIMP" V2.0.2
* You will find the original file in the gimp distribution zip under:
* \plug-ins\common\webbrowser.c
*
* It was modified to suit the Wireshark environment (#if 0)!
*
* For the UNIX+X11 launcher, see this blog post:
*
* http://blogs.gnome.org/timj/2006/11/24/24112006-how-to-start-a-web-browser/
*
* for a discussion of how Beast launches a browser, a link that shows
* the rather complicated code it uses, and some information on why it
* goes through all that pain. See also Kevin Krammer's comment, which
* notes that the problem might be that the GNOME, KDE, and XFCE
* launcher programs always cause the window to be opened in the background,
* regardless of whether an instance of the app is running or not (the
* app gets launched - in the background - if it's not already running,
* and is told to open a new window/tab if it's already running), while
* launchers such as sensible-browser, which xdg-open falls back to,
* launch the app in the foreground if it's not already running, leading
* to the "first window is in the foreground, subsequent windows are in
* the background" behavior in non-GNOME/KDE/XFCE environments.
*
* Perhaps the right strategy is to:
*
* Check whether we're in a GNOME/KDE/XFCE session and, if
* we are, try xdg-open, as it works around, among other things,
* some kfmclient bugs, and run it synchronously (that will fail
* if we detect a GNOME/KDE/XFCE session but the launcher is
* missing, but so it goes). If we don't have xdg-open, try
* the appropriate launcher for the environment, but ignore
* the return code from kfmclient, as it might be bogus (that's
* the bug xdg-open works around).
*
* Otherwise, try the "broken/unpredictable browser launchers",
* but run them in the background and leave them running, and
* ignore the exit code, and then try x-www-browser, and then
* try directly launching a user-specified browser. (Beast tries
* a bunch of browsers, with the user not being allowed to
* specify which one they want.)
*
* On the other hand, see bug 2699, in which xdg-open is itself buggy.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h> /* strlen, strstr */
#include <gtk/gtk.h>
#include <epan/filesystem.h>
#include <epan/prefs.h>
#include "../simple_dialog.h"
#include "gtk/webbrowser.h"
#if defined(G_OS_WIN32)
/* Win32 - use Windows shell services to start a browser */
#include <windows.h>
/* We're using Unicode */
#include <tchar.h>
#include <wsutil/unicode-utils.h>
/* if WIN32_LEAN_AND_MEAN is defined, shellapi.h is needed too */
#include <shellapi.h>
#elif defined (HAVE_OS_X_FRAMEWORKS)
/* Mac OS X - use Launch Services to start a browser */
#include <CoreFoundation/CoreFoundation.h>
#include <ApplicationServices/ApplicationServices.h>
#elif defined(HAVE_XDG_OPEN)
/* UNIX+X11 desktop with Portland Group stuff - use xdg-open to start a browser */
#else
/* Everything else - launch the browser ourselves */
#define MUST_LAUNCH_BROWSER_OURSELVES
#endif
#ifdef MUST_LAUNCH_BROWSER_OURSELVES
static gchar* strreplace (const gchar *string,
const gchar *delimiter,
const gchar *replacement);
#endif
gboolean
browser_needs_pref(void)
{
#ifdef MUST_LAUNCH_BROWSER_OURSELVES
return TRUE;
#else
return FALSE;
#endif
}
gboolean
browser_open_url (const gchar *url)
{
#if defined(G_OS_WIN32)
return ((gint) ShellExecute (HWND_DESKTOP, _T("open"), utf_8to16(url), NULL, NULL, SW_SHOWNORMAL) > 32);
#elif defined(HAVE_OS_X_FRAMEWORKS)
CFStringRef url_CFString;
CFURLRef url_CFURL;
OSStatus status;
/*
* XXX - if URLs passed to "browser_open_url()" contain non-ASCII
* characters, we'd have to choose an appropriate value from the
* CFStringEncodings enum.
*/
url_CFString = CFStringCreateWithCString(NULL, url, kCFStringEncodingASCII);
if (url_CFString == NULL)
return (FALSE);
url_CFURL = CFURLCreateWithString(NULL, url_CFString, NULL);
CFRelease(url_CFString);
if (url_CFURL == NULL) {
/*
* XXX - this could mean that the url_CFString wasn't a valid URL,
* or that memory allocation failed. We can't determine which,
* except perhaps by providing our own allocator and somehow
* flagging allocation failures.
*/
return (FALSE);
}
/*
* XXX - this is a Launch Services result code, and we should probably
* display a dialog box if it's not 0, describing what the error was.
* Then again, we should probably do the same for the ShellExecute call,
* unless that call itself happens to pop up a dialog box for all errors.
*/
status = LSOpenCFURLRef(url_CFURL, NULL);
CFRelease(url_CFURL);
return (status == 0);
#elif defined(HAVE_XDG_OPEN)
GError *error = NULL;
gchar *argv[3];
gboolean retval;
g_return_val_if_fail (url != NULL, FALSE);
argv[0] = "xdg-open";
argv[1] = (char *)url; /* Grr - g_spawn_async() shouldn't modify this */
argv[2] = NULL;
/*
* XXX - use g_spawn_on_screen() so the browser window shows up on
* the same screen?
*/
retval = g_spawn_async (NULL, argv, NULL,
G_SPAWN_SEARCH_PATH,
NULL, NULL,
NULL, &error);
if (! retval)
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"%sCould not execute xdg-open: %s\n\n\"%s\"",
simple_dialog_primary_start(), simple_dialog_primary_end(),
error->message);
g_error_free (error);
}
return retval;
#elif defined(MUST_LAUNCH_BROWSER_OURSELVES)
GError *error = NULL;
gchar *browser;
gchar *argument;
gchar *cmd;
gchar **argv;
gboolean retval;
g_return_val_if_fail (url != NULL, FALSE);
/* browser = gimp_gimprc_query ("web-browser");*/
browser = g_strdup(prefs.gui_webbrowser);
if (browser == NULL || ! strlen (browser))
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"Web browser not specified.\n"
"Please correct the web browser setting in the Preferences dialog.");
g_free (browser);
return FALSE;
}
/* quote the url since it might contains special chars */
argument = g_shell_quote (url);
/* replace %s with URL */
if (strstr (browser, "%s"))
cmd = strreplace (browser, "%s", argument);
else
cmd = g_strconcat (browser, " ", argument, NULL);
g_free (argument);
/* parse the cmd line */
if (! g_shell_parse_argv (cmd, NULL, &argv, &error))
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"%sCould not parse web browser command: \"%s\"%s\n\n\"%s\"\n\n%s",
simple_dialog_primary_start(), browser, simple_dialog_primary_end(),
error->message,
"Please correct the web browser setting in the Preferences dialog.");
g_error_free (error);
return FALSE;
}
/*
* XXX - use g_spawn_on_screen() so the browser window shows up on
* the same screen?
*/
retval = g_spawn_async (NULL, argv, NULL,
G_SPAWN_SEARCH_PATH,
NULL, NULL,
NULL, &error);
if (! retval)
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"%sCould not execute web browser: \"%s\"%s\n\n\"%s\"\n\n%s",
simple_dialog_primary_start(), browser, simple_dialog_primary_end(),
error->message,
"Please correct the web browser setting in the Preferences dialog.");
g_error_free (error);
}
g_free (browser);
g_free (cmd);
g_strfreev (argv);
return retval;
#endif
}
/** Convert local absolute path to uri.
*
* @param filename to (absolute pathed) filename to convert
* @return a newly allocated uri, you must g_free it later
*/
gchar *
filename2uri(const gchar *filename)
{
int i = 0;
gchar *file_tmp;
GString *filestr;
filestr = g_string_sized_new(200);
/* this escaping is somewhat slow but should working fine */
for(i=0; filename[i]; i++) {
switch(filename[i]) {
case(' '):
g_string_append(filestr, "%20");
break;
case('%'):
g_string_append(filestr, "%%");
break;
case('\\'):
g_string_append_c(filestr, '/');
break;
/* XXX - which other chars need to be escaped? */
default:
g_string_append_c(filestr, filename[i]);
}
}
/* prepend URI header "file:" appropriate for the system */
#ifdef G_OS_WIN32
/* XXX - how do we handle UNC names (e.g. //servername/sharename/dir1/dir2/capture-file.cap) */
g_string_prepend(filestr, "file:///");
#else
g_string_prepend(filestr, "file://");
#endif
file_tmp = filestr->str;
g_string_free(filestr, FALSE /* don't free segment data */);
return file_tmp;
}
gboolean
filemanager_open_directory (const gchar *path)
{
#if defined(G_OS_WIN32)
/* ShellExecute(...,"explore",...) needs path to be explicitly a directory;
Otherwise 'explore' will fail if a file exists with a basename matching
the provided directory path.
(eg: wireshak-gtk2.exe exists in the same directory as a wireshark-gtk2
directory entry).
*/
gint ret;
gchar *xpath;
xpath = g_strconcat(path,
g_str_has_suffix(path, "\\") ? "" : "\\",
NULL);
ret = (gint) ShellExecute (HWND_DESKTOP, _T("explore"), utf_8to16(xpath), NULL, NULL, SW_SHOWNORMAL);
g_free(xpath);
return (ret > 32);
#elif defined(HAVE_OS_X_FRAMEWORKS)
CFStringRef path_CFString;
CFURLRef path_CFURL;
OSStatus status;
path_CFString = CFStringCreateWithCString(NULL, path, kCFStringEncodingUTF8);
if (path_CFString == NULL)
return (FALSE);
path_CFURL = CFURLCreateWithFileSystemPath(NULL, path_CFString,
kCFURLPOSIXPathStyle, true);
CFRelease(path_CFString);
if (path_CFURL == NULL) {
/*
* XXX - does this always mean that that memory allocation failed?
*/
return (FALSE);
}
/*
* XXX - this is a Launch Services result code, and we should probably
* display a dialog box if it's not 0, describing what the error was.
* Then again, we should probably do the same for the ShellExecute call,
* unless that call itself happens to pop up a dialog box for all errors.
*/
status = LSOpenCFURLRef(path_CFURL, NULL);
CFRelease(path_CFURL);
return (status == 0);
#elif defined(HAVE_XDG_OPEN)
GError *error = NULL;
gchar *argv[3];
gboolean retval;
g_return_val_if_fail (path != NULL, FALSE);
argv[0] = "xdg-open";
argv[1] = (char *)path; /* Grr - g_spawn_async() shouldn't modify this */
argv[2] = NULL;
/*
* XXX - use g_spawn_on_screen() so the file managaer window shows up on
* the same screen?
*/
retval = g_spawn_async (NULL, argv, NULL,
G_SPAWN_SEARCH_PATH,
NULL, NULL,
NULL, &error);
if (! retval)
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"%sCould not execute xdg-open: %s\n\n\"%s\"",
simple_dialog_primary_start(), simple_dialog_primary_end(),
error->message);
g_error_free (error);
}
return retval;
#elif defined(MUST_LAUNCH_BROWSER_OURSELVES)
GError *error = NULL;
gchar *browser;
gchar *argument;
gchar *cmd;
gchar **argv;
gboolean retval;
g_return_val_if_fail (path != NULL, FALSE);
/* browser = gimp_gimprc_query ("web-browser");*/
browser = g_strdup(prefs.gui_webbrowser);
if (browser == NULL || ! strlen (browser))
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"Web browser not specified.\n"
"Please correct the web browser setting in the Preferences dialog.");
g_free (browser);
return FALSE;
}
/* conver the path to a URI */
argument = filename2uri (path);
/* replace %s with URL */
if (strstr (browser, "%s"))
cmd = strreplace (browser, "%s", argument);
else
cmd = g_strconcat (browser, " ", argument, NULL);
g_free (argument);
/* parse the cmd line */
if (! g_shell_parse_argv (cmd, NULL, &argv, &error))
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"%sCould not parse web browser command: \"%s\"%s\n\n\"%s\"\n\n%s",
simple_dialog_primary_start(), browser, simple_dialog_primary_end(),
error->message,
"Please correct the web browser setting in the Preferences dialog.");
g_error_free (error);
return FALSE;
}
/*
* XXX - use g_spawn_on_screen() so the browser window shows up on
* the same screen?
*/
retval = g_spawn_async (NULL, argv, NULL,
G_SPAWN_SEARCH_PATH,
NULL, NULL,
NULL, &error);
if (! retval)
{
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"%sCould not execute web browser: \"%s\"%s\n\n\"%s\"\n\n%s",
simple_dialog_primary_start(), browser, simple_dialog_primary_end(),
error->message,
"Please correct the web browser setting in the Preferences dialog.");
g_error_free (error);
}
g_free (browser);
g_free (cmd);
g_strfreev (argv);
return retval;
#endif
}
#ifdef MUST_LAUNCH_BROWSER_OURSELVES
static gchar*
strreplace (const gchar *string,
const gchar *delimiter,
const gchar *replacement)
{
gchar *ret;
gchar **tmp;
g_return_val_if_fail (string != NULL, NULL);
g_return_val_if_fail (delimiter != NULL, NULL);
g_return_val_if_fail (replacement != NULL, NULL);
tmp = g_strsplit (string, delimiter, 0);
ret = g_strjoinv (replacement, tmp);
g_strfreev (tmp);
return ret;
}
#endif /* MUST_LAUNCH_BROWSER_OURSELVES */
/* browse a file relative to the data dir */
void
browser_open_data_file(const gchar *filename)
{
gchar *file_path;
gchar *uri;
/* build filename */
#ifdef G_OS_WIN32
if((strlen(filename) > 2) && (filename[1] == ':'))
file_path = g_strdup(filename);
#else
/* XXX: is this correct for MacOS/Linux ? */
if((strlen(filename) > 1) && (filename[0] == '/'))
file_path = g_strdup(filename);
#endif
else
file_path = g_strdup_printf("%s/%s", get_datafile_dir(), filename);
/* XXX - check, if the file is really existing, otherwise display a simple_dialog about the problem */
/* convert filename to uri */
uri = filename2uri(file_path);
/* show the uri */
browser_open_url (uri);
g_free(file_path);
g_free(uri);
}
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