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openvpn-gui/proxy.c

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/*
* OpenVPN-GUI -- A Windows GUI for OpenVPN.
*
* Copyright (C) 2004 Mathias Sundman <mathias@nilings.se>
* 2009 Heiko Hund <heikoh@users.sf.net>
*
* 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
*/
#include <windows.h>
#include <prsht.h>
#include <tchar.h>
#include "main.h"
#include "options.h"
#include "registry.h"
#include "proxy.h"
#include "ieproxy.h"
#include "openvpn-gui-res.h"
#include "localization.h"
extern struct options o;
bool CALLBACK ProxySettingsDialogFunc (HWND hwndDlg, UINT msg, WPARAM wParam, UNUSED LPARAM lParam)
{
HICON hIcon;
LPPSHNOTIFY psn;
switch (msg) {
case WM_INITDIALOG:
hIcon = LoadLocalizedIcon(APP_ICON);
if (hIcon) {
SendMessage(hwndDlg, WM_SETICON, (WPARAM) (ICON_SMALL), (LPARAM) (hIcon));
SendMessage(hwndDlg, WM_SETICON, (WPARAM) (ICON_BIG), (LPARAM) (hIcon));
}
/* Limit Port editbox to 5 chars. */
SendMessage(GetDlgItem(hwndDlg, EDIT_PROXY_PORT), EM_SETLIMITTEXT, 5, 0);
LoadProxySettings(hwndDlg);
break;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case RB_PROXY_USE_OPENVPN:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, RB_PROXY_HTTP), FALSE);
EnableWindow(GetDlgItem(hwndDlg, RB_PROXY_SOCKS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, EDIT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, EDIT_PROXY_PORT), FALSE);
EnableWindow(GetDlgItem(hwndDlg, TEXT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, TEXT_PROXY_PORT), FALSE);
EnableWindow(GetDlgItem(hwndDlg, CHECKB_PROXY_AUTH), FALSE);
}
break;
case RB_PROXY_USE_IE:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, RB_PROXY_HTTP), FALSE);
EnableWindow(GetDlgItem(hwndDlg, RB_PROXY_SOCKS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, EDIT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, EDIT_PROXY_PORT), FALSE);
EnableWindow(GetDlgItem(hwndDlg, TEXT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, TEXT_PROXY_PORT), FALSE);
EnableWindow(GetDlgItem(hwndDlg, CHECKB_PROXY_AUTH), TRUE);
}
break;
case RB_PROXY_USE_MANUAL:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, RB_PROXY_HTTP), TRUE);
EnableWindow(GetDlgItem(hwndDlg, RB_PROXY_SOCKS), TRUE);
EnableWindow(GetDlgItem(hwndDlg, EDIT_PROXY_ADDRESS), TRUE);
EnableWindow(GetDlgItem(hwndDlg, EDIT_PROXY_PORT), TRUE);
EnableWindow(GetDlgItem(hwndDlg, TEXT_PROXY_ADDRESS), TRUE);
EnableWindow(GetDlgItem(hwndDlg, TEXT_PROXY_PORT), TRUE);
EnableWindow(GetDlgItem(hwndDlg, CHECKB_PROXY_AUTH),
(IsDlgButtonChecked(hwndDlg, RB_PROXY_HTTP) == BST_CHECKED ? TRUE : FALSE));
}
break;
case RB_PROXY_HTTP:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, CHECKB_PROXY_AUTH), TRUE);
SetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, o.proxy_http_address);
SetDlgItemText(hwndDlg, EDIT_PROXY_PORT, o.proxy_http_port);
}
break;
case RB_PROXY_SOCKS:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, CHECKB_PROXY_AUTH), FALSE);
SetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, o.proxy_socks_address);
SetDlgItemText(hwndDlg, EDIT_PROXY_PORT, o.proxy_socks_port);
}
break;
}
break;
case WM_NOTIFY:
psn = (LPPSHNOTIFY) lParam;
if (psn->hdr.code == (UINT) PSN_KILLACTIVE)
{
SetWindowLong(hwndDlg, DWL_MSGRESULT,
( CheckProxySettings(hwndDlg) ? FALSE : TRUE ));
return TRUE;
}
else if (psn->hdr.code == (UINT) PSN_APPLY)
{
SaveProxySettings(hwndDlg);
SetWindowLong(hwndDlg, DWL_MSGRESULT, PSNRET_NOERROR);
return TRUE;
}
break;
case WM_CLOSE:
EndDialog(hwndDlg, LOWORD(wParam));
return TRUE;
}
return FALSE;
}
/* Check that proxy settings are valid */
int CheckProxySettings(HWND hwndDlg)
{
if (IsDlgButtonChecked(hwndDlg, RB_PROXY_USE_MANUAL) == BST_CHECKED)
{
TCHAR text[100];
BOOL http = (IsDlgButtonChecked(hwndDlg, RB_PROXY_HTTP) == BST_CHECKED);
GetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, text, sizeof(text)/sizeof(*text));
if (_tcslen(text) == 0)
{
/* proxy address not specified */
ShowLocalizedMsg(GUI_NAME, (http ? ERR_HTTP_PROXY_ADDRESS : ERR_SOCKS_PROXY_ADDRESS));
return(0);
}
GetDlgItemText(hwndDlg, EDIT_PROXY_PORT, text, sizeof(text));
if (_tcslen(text) == 0)
{
/* proxy port not specified */
ShowLocalizedMsg(GUI_NAME, (http ? ERR_HTTP_PROXY_PORT : ERR_SOCKS_PROXY_PORT));
return(0);
}
long port = strtol(text, NULL, 10);
if ((port < 1) || (port > 65535))
{
/* proxy port range error */
ShowLocalizedMsg(GUI_NAME, (http ? ERR_HTTP_PROXY_PORT_RANGE : ERR_SOCKS_PROXY_PORT_RANGE));
return(0);
}
}
return(1);
}
void LoadProxySettings(HWND hwndDlg)
{
/* Set Proxy type, address and port */
if (o.proxy_type == 0) /* HTTP Proxy */
{
CheckRadioButton(hwndDlg, RB_PROXY_HTTP, RB_PROXY_SOCKS, RB_PROXY_HTTP);
SetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, o.proxy_http_address);
SetDlgItemText(hwndDlg, EDIT_PROXY_PORT, o.proxy_http_port);
}
else /* SOCKS Proxy */
{
CheckRadioButton(hwndDlg, RB_PROXY_HTTP, RB_PROXY_SOCKS, RB_PROXY_SOCKS);
SetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, o.proxy_socks_address);
SetDlgItemText(hwndDlg, EDIT_PROXY_PORT, o.proxy_socks_port);
}
if (o.proxy_http_auth) CheckDlgButton(hwndDlg, CHECKB_PROXY_AUTH, BST_CHECKED);
/* Set Proxy Settings Source */
if (o.proxy_source == 0)
SendMessage(GetDlgItem(hwndDlg, RB_PROXY_USE_OPENVPN), BM_CLICK, 0, 0);
if (o.proxy_source == 1)
SendMessage(GetDlgItem(hwndDlg, RB_PROXY_USE_IE), BM_CLICK, 0, 0);
if (o.proxy_source == 2)
SendMessage(GetDlgItem(hwndDlg, RB_PROXY_USE_MANUAL), BM_CLICK, 0, 0);
}
void SaveProxySettings(HWND hwndDlg)
{
HKEY regkey;
DWORD dwDispos;
char proxy_source_string[2]="0";
char proxy_type_string[2]="0";
char proxy_http_auth_string[2]="0";
/* Save Proxy Settings Source */
if (IsDlgButtonChecked(hwndDlg, RB_PROXY_USE_OPENVPN) == BST_CHECKED)
{
o.proxy_source = 0;
proxy_source_string[0] = '0';
}
if (IsDlgButtonChecked(hwndDlg, RB_PROXY_USE_IE) == BST_CHECKED)
{
o.proxy_source = 1;
proxy_source_string[0] = '1';
}
if (IsDlgButtonChecked(hwndDlg, RB_PROXY_USE_MANUAL) == BST_CHECKED)
{
o.proxy_source = 2;
proxy_source_string[0] = '2';
}
/* Save Proxy type, address and port */
if (IsDlgButtonChecked(hwndDlg, RB_PROXY_HTTP) == BST_CHECKED)
{
o.proxy_type = 0;
proxy_type_string[0] = '0';
GetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, o.proxy_http_address,
sizeof(o.proxy_http_address));
GetDlgItemText(hwndDlg, EDIT_PROXY_PORT, o.proxy_http_port,
sizeof(o.proxy_http_port));
BOOL auth = (IsDlgButtonChecked(hwndDlg, CHECKB_PROXY_AUTH) == BST_CHECKED);
o.proxy_http_auth = (auth ? 1 : 0);
proxy_http_auth_string[0] = (auth ? '1' : '0');
}
else
{
o.proxy_type = 1;
proxy_type_string[0] = '1';
GetDlgItemText(hwndDlg, EDIT_PROXY_ADDRESS, o.proxy_socks_address,
sizeof(o.proxy_socks_address));
GetDlgItemText(hwndDlg, EDIT_PROXY_PORT, o.proxy_socks_port,
sizeof(o.proxy_socks_port));
}
/* Open Registry for writing */
if (RegCreateKeyEx(HKEY_CURRENT_USER,
GUI_REGKEY_HKCU,
0,
(LPTSTR) "",
REG_OPTION_NON_VOLATILE,
KEY_WRITE,
NULL,
&regkey,
&dwDispos) != ERROR_SUCCESS)
{
/* error creating Registry-Key */
ShowLocalizedMsg(GUI_NAME, ERR_CREATE_REG_HKCU_KEY, GUI_REGKEY_HKCU);
return;
}
/* Save Settings to registry */
SetRegistryValue(regkey, "proxy_source", proxy_source_string);
SetRegistryValue(regkey, "proxy_type", proxy_type_string);
SetRegistryValue(regkey, "proxy_http_auth", proxy_http_auth_string);
SetRegistryValue(regkey, "proxy_http_address", o.proxy_http_address);
SetRegistryValue(regkey, "proxy_http_port", o.proxy_http_port);
SetRegistryValue(regkey, "proxy_socks_address", o.proxy_socks_address);
SetRegistryValue(regkey, "proxy_socks_port", o.proxy_socks_port);
RegCloseKey(regkey);
}
void GetProxyRegistrySettings()
{
LONG status;
HKEY regkey;
char proxy_source_string[2]="0";
char proxy_type_string[2]="0";
char proxy_http_auth_string[2]="0";
char temp_path[100];
/* Construct Authfile path */
if (!GetTempPath(sizeof(temp_path) - 1, temp_path))
{
/* Error getting TempPath - using C:\ */
ShowLocalizedMsg(GUI_NAME, ERR_GET_TEMP_PATH);
strcpy(temp_path, "C:\\");
}
strncat(temp_path, "openvpn_authfile.txt",
sizeof(temp_path) - strlen(temp_path) - 1);
strncpy(o.proxy_authfile, temp_path, sizeof(o.proxy_authfile));
/* Open Registry for reading */
status = RegOpenKeyEx(HKEY_CURRENT_USER,
GUI_REGKEY_HKCU,
0,
KEY_READ,
&regkey);
/* Return if can't open the registry key */
if (status != ERROR_SUCCESS) return;
/* get registry settings */
GetRegistryValue(regkey, "proxy_http_address", o.proxy_http_address,
sizeof(o.proxy_http_address));
GetRegistryValue(regkey, "proxy_http_port", o.proxy_http_port,
sizeof(o.proxy_http_port));
GetRegistryValue(regkey, "proxy_socks_address", o.proxy_socks_address,
sizeof(o.proxy_socks_address));
GetRegistryValue(regkey, "proxy_socks_port", o.proxy_socks_port,
sizeof(o.proxy_socks_port));
GetRegistryValue(regkey, "proxy_source", proxy_source_string,
sizeof(proxy_source_string));
GetRegistryValue(regkey, "proxy_type", proxy_type_string,
sizeof(proxy_type_string));
GetRegistryValue(regkey, "proxy_http_auth", proxy_http_auth_string,
sizeof(proxy_http_auth_string));
if (proxy_source_string[0] == '1')
o.proxy_source=1;
if (proxy_source_string[0] == '2')
o.proxy_source=2;
if (proxy_source_string[0] == '3')
o.proxy_source=3;
if (proxy_type_string[0] == '1')
o.proxy_type=1;
if (proxy_http_auth_string[0] == '1')
o.proxy_http_auth=1;
RegCloseKey(regkey);
}
BOOL CALLBACK ProxyAuthDialogFunc (HWND hwndDlg, UINT msg, WPARAM wParam, UNUSED LPARAM lParam)
{
char username[50];
char password[50];
FILE *fp;
switch (msg) {
case WM_INITDIALOG:
//SetForegroundWindow(hwndDlg);
break;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
GetDlgItemText(hwndDlg, EDIT_PROXY_USERNAME, username, sizeof(username) - 1);
GetDlgItemText(hwndDlg, EDIT_PROXY_PASSWORD, password, sizeof(password) - 1);
if (!(fp = fopen(o.proxy_authfile, "w")))
{
/* error creating AUTH file */
ShowLocalizedMsg(GUI_NAME, ERR_CREATE_AUTH_FILE, o.proxy_authfile);
EndDialog(hwndDlg, LOWORD(wParam));
}
fputs(username, fp);
fputs("\n", fp);
fputs(password, fp);
fputs("\n", fp);
fclose(fp);
EndDialog(hwndDlg, LOWORD(wParam));
return TRUE;
}
break;
case WM_CLOSE:
EndDialog(hwndDlg, LOWORD(wParam));
return TRUE;
}
return FALSE;
}
/*
* Construct the proxy options to append to the cmd-line.
*/
void ConstructProxyCmdLine(char *proxy_string_ptr, unsigned int size)
{
char proxy_string[100];
CLEAR(proxy_string);
if (o.proxy_source == PROXY_SOURCE_MANUAL)
{
if (o.proxy_type == PROXY_TYPE_HTTP)
{
if (o.proxy_http_auth == PROXY_HTTP_ASK_AUTH)
{
/* Ask for Proxy username/password */
LocalizedDialogBox(IDD_PROXY_AUTH, ProxyAuthDialogFunc);
mysnprintf(proxy_string, "--http-proxy %s %s %s",
o.proxy_http_address,
o.proxy_http_port,
o.proxy_authfile);
}
else
{
mysnprintf(proxy_string, "--http-proxy %s %s",
o.proxy_http_address,
o.proxy_http_port);
}
}
if (o.proxy_type == PROXY_TYPE_SOCKS)
{
mysnprintf(proxy_string, "--socks-proxy %s %s",
o.proxy_socks_address,
o.proxy_socks_port);
}
}
if (o.proxy_source == PROXY_SOURCE_IE)
{
LPCTSTR ieproxy;
char *pos;
ieproxy = getIeHttpProxy();
if (!ieproxy)
{
/* can't get ie proxy settings */
ShowLocalizedMsg(GUI_NAME, ERR_GET_IE_PROXY_SETTINGS, getIeHttpProxyError);
}
else
{
/* Don't use a proxy if IE proxy string is empty */
if (strlen(ieproxy) > 1)
{
/* Parse the port number from the IE proxy string */
if ((pos = strchr(ieproxy, ':')))
{
*pos = '\0';
if (o.proxy_http_auth == PROXY_HTTP_ASK_AUTH)
{
/* Ask for Proxy username/password */
LocalizedDialogBox(IDD_PROXY_AUTH, ProxyAuthDialogFunc);
mysnprintf(proxy_string, "--http-proxy %s %s %s",
ieproxy, pos+1, o.proxy_authfile)
}
else
{
mysnprintf(proxy_string, "--http-proxy %s %s", ieproxy, pos+1)
}
}
/* No port is specified, use 80 as default port */
else
{
if (o.proxy_http_auth == PROXY_HTTP_ASK_AUTH)
{
/* Ask for Proxy username/password */
LocalizedDialogBox(IDD_PROXY_AUTH, ProxyAuthDialogFunc);
mysnprintf(proxy_string, "--http-proxy %s 80 %s",
ieproxy, o.proxy_authfile)
}
else
{
mysnprintf(proxy_string, "--http-proxy %s 80", ieproxy)
}
}
}
//free (ieproxy);
}
}
strncpy(proxy_string_ptr, proxy_string, size);
}