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openvpn-gui/options.c

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/*
* OpenVPN-GUI -- A Windows GUI for OpenVPN.
*
* Copyright (C) 2004 Mathias Sundman <mathias@nilings.se>
* 2010 Heiko Hund <heikoh@users.sf.net>
* 2016 Selva Nair <selva.nair@gmail.com>
*
* 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 (see the file COPYING included with this
* distribution); 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 <windows.h>
#include <windowsx.h>
#include <prsht.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <shlobj.h>
#include <shlwapi.h>
#include "options.h"
#include "main.h"
#include "openvpn-gui-res.h"
#include "localization.h"
#include "misc.h"
#include "registry.h"
#include "save_pass.h"
#define streq(x, y) (_tcscmp((x), (y)) == 0)
extern options_t o;
static version_t
MakeVersion (short ma, short mi, short b, short r)
{
version_t v = {ma, mi, b, r};
return v;
}
static void
ExpandString (WCHAR *str, int max_len)
{
WCHAR expanded_string[MAX_PATH];
int len = ExpandEnvironmentStringsW (str, expanded_string, _countof(expanded_string));
if (len > max_len || len > (int) _countof(expanded_string))
{
PrintDebug (L"Failed to expanded env vars in '%s'. String too long", str);
return;
}
wcsncpy (str, expanded_string, max_len);
}
void
ExpandOptions (void)
{
ExpandString (o.exe_path, _countof(o.exe_path));
ExpandString (o.config_dir, _countof(o.config_dir));
ExpandString (o.log_dir, _countof(o.log_dir));
ExpandString (o.editor, _countof(o.editor));
ExpandString (o.log_viewer, _countof(o.log_viewer));
}
static int
add_option(options_t *options, int i, TCHAR **p)
{
if (streq(p[0], _T("help")))
{
TCHAR caption[200];
TCHAR msg[USAGE_BUF_SIZE];
/* We only print help and exit: release the semapahore to allow another instance */
CloseSemaphore(o.session_semaphore); /* OK to call even if semaphore is NULL */
o.session_semaphore = NULL;
LoadLocalizedStringBuf(caption, _countof(caption), IDS_NFO_USAGECAPTION);
LoadLocalizedStringBuf(msg, _countof(msg), IDS_NFO_USAGE);
MessageBoxEx(NULL, msg, caption, MB_OK | MB_SETFOREGROUND, GetGUILanguage());
exit(0);
}
else if (streq(p[0], _T("connect")) && p[1])
{
++i;
if (!options->auto_connect || options->num_auto_connect == options->max_auto_connect)
{
options->max_auto_connect += 10;
void *tmp = realloc(options->auto_connect, sizeof(wchar_t *)*options->max_auto_connect);
if (!tmp)
{
options->max_auto_connect -= 10;
ErrorExit(1, L"Out of memory while parsing command line");
}
options->auto_connect = tmp;
}
options->auto_connect[options->num_auto_connect++] = p[1];
/* Treat the first connect option to also mean --command connect profile.
* This gets used if we are not the first instance.
*/
if (options->num_auto_connect == 1)
{
options->action = WM_OVPN_START;
options->action_arg = p[1];
}
}
else if (streq(p[0], _T("exe_path")) && p[1])
{
++i;
_tcsncpy(options->exe_path, p[1], _countof(options->exe_path) - 1);
}
else if (streq(p[0], _T("config_dir")) && p[1])
{
++i;
_tcsncpy(options->config_dir, p[1], _countof(options->config_dir) - 1);
}
else if (streq(p[0], _T("ext_string")) && p[1])
{
++i;
_tcsncpy(options->ext_string, p[1], _countof(options->ext_string) - 1);
}
else if (streq(p[0], _T("log_dir")) && p[1])
{
++i;
_tcsncpy(options->log_dir, p[1], _countof(options->log_dir) - 1);
}
else if (streq(p[0], _T("priority_string")) && p[1])
{
++i;
_tcsncpy(options->priority_string, p[1], _countof(options->priority_string) - 1);
}
else if ( (streq(p[0], _T("append_string")) ||
streq(p[0], _T("log_append"))) && p[1] )
{
++i;
options->log_append = _ttoi(p[1]) ? 1 : 0;
}
else if (streq(p[0], _T("log_viewer")) && p[1])
{
++i;
_tcsncpy(options->log_viewer, p[1], _countof(options->log_viewer) - 1);
}
else if (streq(p[0], _T("editor")) && p[1])
{
++i;
_tcsncpy(options->editor, p[1], _countof(options->editor) - 1);
}
else if (streq(p[0], _T("allow_edit")) && p[1])
{
++i;
PrintDebug (L"Deprecated option: '%s' ignored.", p[0]);
}
else if (streq(p[0], _T("allow_service")) && p[1])
{
++i;
PrintDebug (L"Deprecated option: '%s' ignored.", p[0]);
}
else if (streq(p[0], _T("allow_password")) && p[1])
{
++i;
PrintDebug (L"Deprecated option: '%s' ignored.", p[0]);
}
else if (streq(p[0], _T("allow_proxy")) && p[1])
{
++i;
PrintDebug (L"Deprecated option: '%s' ignored.", p[0]);
}
else if (streq(p[0], _T("show_balloon")) && p[1])
{
++i;
options->show_balloon = _ttoi(p[1]);
}
else if (streq(p[0], _T("service_only")) && p[1])
{
++i;
options->service_only = _ttoi(p[1]) ? 1 : 0;
}
else if (streq(p[0], _T("show_script_window")) && p[1])
{
++i;
options->show_script_window = _ttoi(p[1]) ? 1 : 0;
}
else if (streq(p[0], _T("silent_connection")) && p[1])
{
++i;
options->silent_connection = _ttoi(p[1]) ? 1 : 0;
}
else if (streq(p[0], _T("passphrase_attempts")) && p[1])
{
++i;
PrintDebug (L"Deprecated option: '%s' ignored.", p[0]);
}
else if (streq(p[0], _T("connectscript_timeout")) && p[1])
{
++i;
options->connectscript_timeout = _ttoi(p[1]);
}
else if (streq(p[0], _T("disconnectscript_timeout")) && p[1])
{
++i;
options->disconnectscript_timeout = _ttoi(p[1]);
}
else if (streq(p[0], _T("preconnectscript_timeout")) && p[1])
{
++i;
options->preconnectscript_timeout = _ttoi(p[1]);
}
else if (streq(p[0], _T("config_menu_view")) && p[1])
{
++i;
options->config_menu_view = _ttoi(p[1]);
}
else if (streq(p[0], _T("command")) && p[1])
{
++i;
/* command to be sent to a running instance */
if (streq(p[1], _T("connect")) && p[2])
{
/* Treat this as "--connect profile" in case this is the first instance */
add_option(options, i, &p[1]);
++i;
options->action = WM_OVPN_START;
options->action_arg = p[2];
}
else if (streq(p[1], _T("disconnect")) && p[2])
{
++i;
options->action = WM_OVPN_STOP;
options->action_arg = p[2];
}
else if (streq(p[1], _T("reconnect")) && p[2])
{
++i;
options->action = WM_OVPN_RESTART;
options->action_arg = p[2];
}
else if (streq(p[1], _T("status")) && p[2])
{
++i;
options->action = WM_OVPN_SHOWSTATUS;
options->action_arg = p[2];
}
else if (streq(p[1], _T("silent_connection")))
{
++i;
options->action = WM_OVPN_SILENT;
options->action_arg = p[2] ? p[2] : _T("1");
}
else if (streq(p[1], _T("disconnect_all")))
{
options->action = WM_OVPN_STOPALL;
}
else if (streq(p[1], _T("exit")))
{
options->action = WM_OVPN_EXIT;
}
else
{
ShowLocalizedMsg(IDS_ERR_BAD_OPTION, p[0]);
exit(1);
}
}
else
{
/* Unrecognized option or missing parameter */
ShowLocalizedMsg(IDS_ERR_BAD_OPTION, p[0]);
exit(1);
}
return i;
}
static void
parse_argv(options_t *options, int argc, TCHAR **argv)
{
int i, j;
/* parse command line */
for (i = 1; i < argc; ++i)
{
TCHAR *p[MAX_PARMS];
CLEAR(p);
p[0] = argv[i];
if (_tcsncmp(p[0], _T("--"), 2) != 0)
{
/* Missing -- before option. */
ShowLocalizedMsg(IDS_ERR_BAD_PARAMETER, p[0]);
exit(0);
}
p[0] += 2;
for (j = 1; j < MAX_PARMS; ++j)
{
if (i + j < argc)
{
TCHAR *arg = argv[i + j];
if (_tcsncmp(arg, _T("--"), 2) == 0)
break;
p[j] = arg;
}
}
i = add_option(options, i, p);
}
}
void
InitOptions(options_t *opt)
{
CLEAR(*opt);
opt->netcmd_semaphore = InitSemaphore (NULL);
opt->version = MakeVersion (PACKAGE_VERSION_RESOURCE);
opt->clr_warning = RGB(0xff, 0, 0);
opt->clr_error = RGB(0xff, 0, 0);
}
void
ProcessCommandLine(options_t *options, TCHAR *command_line)
{
TCHAR **argv;
TCHAR *pos = command_line;
int argc = 0;
/* Count the arguments */
do
{
while (*pos == _T(' '))
++pos;
if (*pos == _T('\0'))
break;
++argc;
while (*pos != _T('\0') && *pos != _T(' '))
++pos;
}
while (*pos != _T('\0'));
if (argc == 0)
return;
/* Tokenize the arguments */
argv = (TCHAR**) malloc(argc * sizeof(TCHAR*));
pos = command_line;
argc = 0;
do
{
while (*pos == _T(' '))
pos++;
if (*pos == _T('\0'))
break;
if (*pos == _T('\"'))
{
argv[argc++] = ++pos;
while (*pos != _T('\0') && *pos != _T('\"'))
++pos;
}
else
{
argv[argc++] = pos;
while (*pos != _T('\0') && *pos != _T(' '))
++pos;
}
if (*pos == _T('\0'))
break;
*pos++ = _T('\0');
}
while (*pos != _T('\0'));
parse_argv(options, argc, argv);
free(argv);
ExpandOptions ();
}
/* Return num of connections with state = check */
int
CountConnState(conn_state_t check)
{
int i;
int count = 0;
for (i = 0; i < o.num_configs; ++i)
{
if (o.conn[i].state == check)
++count;
}
return count;
}
connection_t*
GetConnByManagement(SOCKET sk)
{
int i;
for (i = 0; i < o.num_configs; ++i)
{
if (o.conn[i].manage.sk == sk)
return &o.conn[i];
}
return NULL;
}
connection_t*
GetConnByName(const WCHAR *name)
{
for (int i = 0; i < o.num_configs; ++i)
{
if (wcsicmp (o.conn[i].config_file, name) == 0
|| wcsicmp(o.conn[i].config_name, name) == 0)
return &o.conn[i];
}
return NULL;
}
/* callback to set the initial value of folder browse selection */
static int CALLBACK
BrowseCallback (HWND h, UINT msg, UNUSED LPARAM l, LPARAM data)
{
if (msg == BFFM_INITIALIZED)
SendMessage (h, BFFM_SETSELECTION, TRUE, data);
return 0;
}
static BOOL
BrowseFolder (const WCHAR *initial_path, WCHAR *selected_path)
{
BOOL ret = false;
BROWSEINFO bi;
CLEAR(bi);
bi.lpszTitle = L"Select folder...";
bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_NEWDIALOGSTYLE;
bi.lpfn = BrowseCallback;
bi.lParam = (LPARAM) initial_path;
PIDLIST_ABSOLUTE idlist = SHBrowseForFolder (&bi);
if (idlist)
{
ret = SHGetPathFromIDList (idlist, selected_path);
CoTaskMemFree (idlist);
}
return ret;
}
static BOOL
CheckAdvancedDlgParams (HWND hdlg)
{
WCHAR tmp_path[MAX_PATH];
/* replace empty entries by current values */
if (GetWindowTextLength (GetDlgItem(hdlg, ID_EDT_CONFIG_DIR)) == 0)
SetDlgItemText (hdlg, ID_EDT_CONFIG_DIR, o.config_dir);
if (GetWindowTextLength (GetDlgItem(hdlg, ID_EDT_LOG_DIR)) == 0)
SetDlgItemText (hdlg, ID_EDT_LOG_DIR, o.log_dir);
if (GetWindowTextLength (GetDlgItem(hdlg, ID_EDT_CONFIG_EXT)) == 0)
SetDlgItemText (hdlg, ID_EDT_CONFIG_EXT, o.ext_string);
/* ensure paths are absolute */
GetDlgItemText (hdlg, ID_EDT_CONFIG_DIR, tmp_path, _countof(tmp_path));
ExpandString (tmp_path, _countof(tmp_path));
if (PathIsRelativeW (tmp_path))
{
MessageBox (NULL, L"Specified config directory is not an absolute path",
L"Option error", MB_OK);
return false;
}
GetDlgItemText (hdlg, ID_EDT_LOG_DIR, tmp_path, _countof(tmp_path));
ExpandString (tmp_path, _countof(tmp_path));
if (PathIsRelativeW (tmp_path))
{
MessageBox (NULL, L"Specified log directory is not an absolute path",
L"Option error", MB_OK);
return false;
}
return true;
}
static BOOL
SaveAdvancedDlgParams (HWND hdlg)
{
WCHAR tmp_path[MAX_PATH], tmp_path1[MAX_PATH];
UINT tmp;
BOOL status;
GetDlgItemText (hdlg, ID_EDT_CONFIG_DIR, o.config_dir, _countof(o.config_dir));
GetDlgItemText (hdlg, ID_EDT_LOG_DIR, tmp_path, _countof(tmp_path));
wcsncpy (tmp_path1, tmp_path, _countof(tmp_path1));
ExpandString (tmp_path1, _countof(tmp_path1));
if (EnsureDirExists (tmp_path1)) /* this will try to create the path if needed */
wcsncpy (o.log_dir, tmp_path, _countof(o.log_dir)); /* save unexpanded path */
else
{
ShowLocalizedMsg(IDS_ERR_CREATE_PATH, L"Log", tmp_path1);
return false;
}
GetDlgItemText (hdlg, ID_EDT_CONFIG_EXT, o.ext_string, _countof(o.ext_string));
tmp = GetDlgItemInt (hdlg, ID_EDT_PRECONNECT_TIMEOUT, &status, FALSE);
if (status && tmp > 0) o.preconnectscript_timeout = tmp;
tmp = GetDlgItemInt (hdlg, ID_EDT_CONNECT_TIMEOUT, &status, FALSE);
if (status) o.connectscript_timeout = tmp;
tmp = GetDlgItemInt (hdlg, ID_EDT_DISCONNECT_TIMEOUT, &status, FALSE);
if (status && tmp > 0) o.disconnectscript_timeout = tmp;
SaveRegistryKeys ();
ExpandOptions ();
return true;
}
static void
LoadAdvancedDlgParams (HWND hdlg)
{
SetDlgItemText (hdlg, ID_EDT_CONFIG_DIR, o.config_dir);
SetDlgItemText (hdlg, ID_EDT_CONFIG_EXT, o.ext_string);
SetDlgItemText (hdlg, ID_EDT_LOG_DIR, o.log_dir);
SetDlgItemInt (hdlg, ID_EDT_PRECONNECT_TIMEOUT, o.preconnectscript_timeout, FALSE);
SetDlgItemInt (hdlg, ID_EDT_CONNECT_TIMEOUT, o.connectscript_timeout, FALSE);
SetDlgItemInt (hdlg, ID_EDT_DISCONNECT_TIMEOUT, o.disconnectscript_timeout, FALSE);
}
INT_PTR CALLBACK
AdvancedSettingsDlgProc (HWND hwndDlg, UINT msg, UNUSED WPARAM wParam, LPARAM lParam)
{
LPPSHNOTIFY psn;
switch(msg) {
case WM_INITDIALOG:
/* Limit extension editbox to 4 chars. */
SendMessage (GetDlgItem(hwndDlg, ID_EDT_CONFIG_EXT), EM_SETLIMITTEXT, 4, 0);
/* Populate UI */
LoadAdvancedDlgParams (hwndDlg);
break;
case WM_COMMAND:
switch (LOWORD(wParam)) {
WCHAR path[MAX_PATH];
case ID_BTN_CONFIG_DIR:
GetDlgItemText (hwndDlg, ID_EDT_CONFIG_DIR, path, _countof(path));
if (BrowseFolder (path, path))
SetDlgItemText (hwndDlg, ID_EDT_CONFIG_DIR, path);
break;
case ID_BTN_LOG_DIR:
GetDlgItemText (hwndDlg, ID_EDT_LOG_DIR, path, _countof(path));
if (BrowseFolder (path, path))
SetDlgItemText (hwndDlg, ID_EDT_LOG_DIR, path);
break;
}
break;
case WM_NOTIFY:
psn = (LPPSHNOTIFY) lParam;
if (psn->hdr.code == (UINT) PSN_KILLACTIVE)
{
SetWindowLongPtr (hwndDlg, DWLP_MSGRESULT, (CheckAdvancedDlgParams(hwndDlg) ? FALSE : TRUE));
return TRUE;
}
if (psn->hdr.code == (UINT) PSN_APPLY)
{
BOOL status = SaveAdvancedDlgParams (hwndDlg);
SetWindowLongPtr (hwndDlg, DWLP_MSGRESULT, status? PSNRET_NOERROR:PSNRET_INVALID);
return TRUE;
}
break;
}
return FALSE;
}
int
CompareStringExpanded (const WCHAR *str1, const WCHAR *str2)
{
WCHAR str1_cpy[MAX_PATH], str2_cpy[MAX_PATH];
wcsncpy (str1_cpy, str1, _countof(str1_cpy));
wcsncpy (str2_cpy, str2, _countof(str2_cpy));
str1_cpy[MAX_PATH-1] = L'\0';
str2_cpy[MAX_PATH-1] = L'\0';
ExpandString (str1_cpy, _countof(str1_cpy));
ExpandString (str2_cpy, _countof(str2_cpy));
return wcsicmp (str1_cpy, str2_cpy);
}
/* Hide the password save options from user */
void
DisableSavePasswords(connection_t *c)
{
DeleteSavedPasswords(c->config_name);
c->flags &= ~(FLAG_SAVE_AUTH_PASS | FLAG_SAVE_KEY_PASS);
c->flags |= FLAG_DISABLE_SAVE_PASS;
}