| 1 |
/* GPGOEInit.c - GPGOE DLL Loader |
| 2 |
* Copyright (C) 2001, 2002, 2006 Timo Schulz |
| 3 |
* |
| 4 |
* This file is part of GPGOE. |
| 5 |
* |
| 6 |
* GPGOE is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU Lesser General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2.1 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* GPGOE is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
*/ |
| 16 |
|
| 17 |
#ifdef HAVE_CONFIG_H |
| 18 |
#include <config.h> |
| 19 |
#endif |
| 20 |
#include <ctype.h> |
| 21 |
#include <windows.h> |
| 22 |
#include <tlhelp32.h> |
| 23 |
#include <stdio.h> |
| 24 |
|
| 25 |
#include "resource.h" |
| 26 |
|
| 27 |
|
| 28 |
/* Supported plug-in modes. */ |
| 29 |
enum gpgoe_mode_t { |
| 30 |
GPGOE_MODE_NORMAL = 0, |
| 31 |
GPGOE_MODE_PLAINREPLY = 1, |
| 32 |
GPGOE_MODE_CACHEPASS = 2 |
| 33 |
}; |
| 34 |
|
| 35 |
/* DLL imports. */ |
| 36 |
int gpgoe_initialize (void); |
| 37 |
int gpgoe_remove (void); |
| 38 |
void gpgoe_set_active_modes (int mode); |
| 39 |
int gpgoe_get_active_modes (void); |
| 40 |
|
| 41 |
|
| 42 |
/* Global module handle. */ |
| 43 |
static HINSTANCE glob_hinst = NULL; |
| 44 |
|
| 45 |
|
| 46 |
/* Valid options for the plug-in. */ |
| 47 |
struct { |
| 48 |
int decrypt_replies; |
| 49 |
int cache_passwd; |
| 50 |
} opt; |
| 51 |
|
| 52 |
|
| 53 |
/* String array of programs which are known to cause trouble |
| 54 |
with GPGoe. */ |
| 55 |
static const char *conflict_apps[] = { |
| 56 |
"DUMMY", /* dummy entry. */ |
| 57 |
"SPYXX.EXE", |
| 58 |
"FDM.EXE", /* fast download manager. */ |
| 59 |
NULL |
| 60 |
}; |
| 61 |
|
| 62 |
|
| 63 |
/* Enumerate all processes and figure out if a program |
| 64 |
is running which could be a conflict for gpgoe. */ |
| 65 |
static int |
| 66 |
check_for_conflict_apps (void) |
| 67 |
{ |
| 68 |
PROCESSENTRY32 pe; |
| 69 |
HANDLE hd; |
| 70 |
BOOL next; |
| 71 |
size_t i; |
| 72 |
int fnd; |
| 73 |
|
| 74 |
hd = CreateToolhelp32Snapshot (TH32CS_SNAPPROCESS, 0); |
| 75 |
if (hd == (HANDLE)-1) |
| 76 |
return 0; |
| 77 |
|
| 78 |
memset (&pe, 0, sizeof (pe)); |
| 79 |
pe.dwSize = sizeof (pe); |
| 80 |
next = Process32First (hd, &pe); |
| 81 |
fnd = 0; |
| 82 |
while (next) { |
| 83 |
for (i=0; i < strlen (pe.szExeFile); i++) |
| 84 |
pe.szExeFile[i] = (char)toupper (pe.szExeFile[i]); |
| 85 |
for (i=0; conflict_apps[i] != NULL; i++) { |
| 86 |
if (strstr (pe.szExeFile, conflict_apps[i])) { |
| 87 |
fnd = i; |
| 88 |
break; |
| 89 |
} |
| 90 |
} |
| 91 |
next = Process32Next (hd, &pe); |
| 92 |
} |
| 93 |
CloseHandle (hd); |
| 94 |
return fnd; |
| 95 |
} |
| 96 |
|
| 97 |
|
| 98 |
/* Return -1 if there was a running instance of OE detected. */ |
| 99 |
static int |
| 100 |
outlook_is_running (void) |
| 101 |
{ |
| 102 |
if (!FindWindowEx (NULL, NULL, "Outlook Express Browser Class", NULL)) |
| 103 |
return 0; |
| 104 |
return -1; |
| 105 |
} |
| 106 |
|
| 107 |
|
| 108 |
#if 0 |
| 109 |
/* Set the menu item @muid to the state @state. */ |
| 110 |
void |
| 111 |
set_menu_state (HMENU menu, UINT muid, UINT state) |
| 112 |
{ |
| 113 |
MENUITEMINFO mii; |
| 114 |
|
| 115 |
memset (&mii, 0, sizeof (mii)); |
| 116 |
mii.cbSize = sizeof (mii); |
| 117 |
mii.fMask = MIIM_STATE; |
| 118 |
mii.fState = state; |
| 119 |
SetMenuItemInfo (menu, muid, FALSE, &mii); |
| 120 |
} |
| 121 |
#endif |
| 122 |
|
| 123 |
|
| 124 |
/* Get an option with the name @name from the registry. */ |
| 125 |
int |
| 126 |
get_gpgoe_option (const char *name) |
| 127 |
{ |
| 128 |
HKEY hkey; |
| 129 |
LONG err; |
| 130 |
char val[32]; |
| 131 |
DWORD type = 0, vallen = sizeof (val); |
| 132 |
|
| 133 |
err = RegOpenKeyEx (HKEY_CURRENT_USER, "Software\\GNU\\GPGoe", 0, |
| 134 |
KEY_READ, &hkey); |
| 135 |
if (err != ERROR_SUCCESS) |
| 136 |
return 0; |
| 137 |
err = RegQueryValueEx (hkey, name, NULL, &type, (BYTE*)val, &vallen); |
| 138 |
RegCloseKey (hkey); |
| 139 |
if (err != ERROR_SUCCESS) |
| 140 |
return 0; |
| 141 |
return atoi (val); |
| 142 |
} |
| 143 |
|
| 144 |
|
| 145 |
/* Put an option with the name @name and the value @val in th registry. */ |
| 146 |
int |
| 147 |
put_gpgoe_option (const char *name, int val) |
| 148 |
{ |
| 149 |
HKEY hkey; |
| 150 |
char buf[32]; |
| 151 |
LONG err; |
| 152 |
|
| 153 |
sprintf (buf, "%d", val); |
| 154 |
err = RegOpenKeyEx (HKEY_CURRENT_USER, "Software\\GNU\\GPGoe", 0, |
| 155 |
KEY_WRITE, &hkey); |
| 156 |
if (err != ERROR_SUCCESS) |
| 157 |
return -1; |
| 158 |
err = RegSetValueEx (hkey, name, 0, REG_SZ, (BYTE *)buf, strlen (buf)); |
| 159 |
RegCloseKey (hkey); |
| 160 |
return err != ERROR_SUCCESS? -1 : 0; |
| 161 |
} |
| 162 |
|
| 163 |
|
| 164 |
/* Create the GPGoe registry if needed. */ |
| 165 |
static int |
| 166 |
create_registry_key (void) |
| 167 |
{ |
| 168 |
HKEY hkey; |
| 169 |
LONG err; |
| 170 |
|
| 171 |
err = RegOpenKeyEx (HKEY_CURRENT_USER, "Software\\GNU\\GPGoe", |
| 172 |
0, KEY_READ, &hkey); |
| 173 |
if (err == ERROR_SUCCESS) { |
| 174 |
RegCloseKey (hkey); |
| 175 |
return 0; |
| 176 |
} |
| 177 |
err = RegCreateKey (HKEY_CURRENT_USER, "Software\\GNU\\GPGoe", &hkey); |
| 178 |
if (err != ERROR_SUCCESS) |
| 179 |
return -1; |
| 180 |
RegCloseKey (hkey); |
| 181 |
return 0; |
| 182 |
} |
| 183 |
|
| 184 |
|
| 185 |
/* Dialog box procedure for setting preferences. */ |
| 186 |
BOOL CALLBACK |
| 187 |
prefs_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
| 188 |
{ |
| 189 |
int modes; |
| 190 |
|
| 191 |
switch (msg) { |
| 192 |
case WM_INITDIALOG: |
| 193 |
CheckDlgButton (dlg, IDC_OPT_PLAINREPLY, |
| 194 |
opt.decrypt_replies? BST_CHECKED : BST_UNCHECKED); |
| 195 |
CheckDlgButton (dlg, IDC_OPT_CACHEPASS, |
| 196 |
opt.cache_passwd? BST_CHECKED : BST_UNCHECKED); |
| 197 |
SetForegroundWindow (dlg); |
| 198 |
return TRUE; |
| 199 |
|
| 200 |
case WM_COMMAND: |
| 201 |
switch (LOWORD (wparam)) { |
| 202 |
case IDOK: |
| 203 |
opt.decrypt_replies = IsDlgButtonChecked (dlg, IDC_OPT_PLAINREPLY)? 1: 0; |
| 204 |
opt.cache_passwd = IsDlgButtonChecked (dlg, IDC_OPT_CACHEPASS)? 1 : 0; |
| 205 |
modes = gpgoe_get_active_modes (); |
| 206 |
if (!opt.decrypt_replies) |
| 207 |
gpgoe_set_active_modes (modes & (~GPGOE_MODE_PLAINREPLY)); |
| 208 |
else |
| 209 |
gpgoe_set_active_modes (GPGOE_MODE_PLAINREPLY); |
| 210 |
if (!opt.cache_passwd) |
| 211 |
gpgoe_set_active_modes (modes & (~GPGOE_MODE_CACHEPASS)); |
| 212 |
else |
| 213 |
gpgoe_set_active_modes (GPGOE_MODE_CACHEPASS); |
| 214 |
if (outlook_is_running ()) |
| 215 |
MessageBox (NULL, "You need to restart Outlook Express.", |
| 216 |
"GPGOE Information", MB_ICONINFORMATION|MB_OK); |
| 217 |
EndDialog (dlg, TRUE); |
| 218 |
break; |
| 219 |
|
| 220 |
case IDCANCEL: |
| 221 |
EndDialog (dlg, FALSE); |
| 222 |
break; |
| 223 |
} |
| 224 |
break; |
| 225 |
} |
| 226 |
|
| 227 |
return FALSE; |
| 228 |
} |
| 229 |
|
| 230 |
|
| 231 |
/* Main window procedure for the taskbar program. */ |
| 232 |
LRESULT CALLBACK |
| 233 |
gpgoe_main_proc (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) |
| 234 |
{ |
| 235 |
NOTIFYICONDATA NID; |
| 236 |
POINT p; |
| 237 |
HMENU hm, popup; |
| 238 |
int id; |
| 239 |
|
| 240 |
switch (msg) { |
| 241 |
case WM_CREATE: |
| 242 |
NID.cbSize = sizeof (NID); |
| 243 |
NID.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; |
| 244 |
NID.uCallbackMessage = WM_USER; |
| 245 |
NID.hWnd = hwnd; |
| 246 |
NID.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_GPGOE)); |
| 247 |
strcpy (NID.szTip, "GPG for Outlook Express"); |
| 248 |
Shell_NotifyIcon (NIM_ADD, &NID); |
| 249 |
DestroyIcon (NID.hIcon); |
| 250 |
|
| 251 |
opt.decrypt_replies = get_gpgoe_option ("PlaintextReply"); |
| 252 |
if (opt.decrypt_replies) |
| 253 |
gpgoe_set_active_modes (GPGOE_MODE_PLAINREPLY); |
| 254 |
opt.cache_passwd = get_gpgoe_option ("CachePassphrase"); |
| 255 |
if (opt.cache_passwd) |
| 256 |
gpgoe_set_active_modes (GPGOE_MODE_CACHEPASS); |
| 257 |
if (gpgoe_initialize ()) { |
| 258 |
MessageBox (hwnd, "Could not register GPG OE hook", |
| 259 |
"Error", MB_ICONERROR|MB_OK); |
| 260 |
ExitProcess (0); |
| 261 |
} |
| 262 |
break; |
| 263 |
|
| 264 |
case WM_DESTROY: |
| 265 |
case WM_ENDSESSION: |
| 266 |
put_gpgoe_option ("PlaintextReply", opt.decrypt_replies); |
| 267 |
put_gpgoe_option ("CachePassphrase", opt.cache_passwd); |
| 268 |
gpgoe_remove (); |
| 269 |
Shell_NotifyIcon (NIM_DELETE, &NID); |
| 270 |
PostQuitMessage (0); |
| 271 |
ExitProcess (0); |
| 272 |
return 0; |
| 273 |
|
| 274 |
case WM_COMMAND: |
| 275 |
switch (LOWORD (wparam)) { |
| 276 |
case ID_INIT_PREFS: |
| 277 |
DialogBoxParam (glob_hinst, (LPCTSTR)IDD_CONFIG, |
| 278 |
GetDesktopWindow (), prefs_dlg_proc, 0); |
| 279 |
break; |
| 280 |
|
| 281 |
case ID_INIT_QUIT: |
| 282 |
SendMessage (hwnd, WM_DESTROY, 0, 0); |
| 283 |
break; |
| 284 |
} |
| 285 |
break; |
| 286 |
|
| 287 |
case WM_USER: |
| 288 |
switch (lparam) { |
| 289 |
case WM_LBUTTONDBLCLK: |
| 290 |
SetForegroundWindow (hwnd); |
| 291 |
id = MessageBox (NULL, |
| 292 |
"Remove the GPG OE plug-in from the system?", |
| 293 |
"Are you sure?", MB_YESNO|MB_ICONINFORMATION); |
| 294 |
if (id == IDYES) |
| 295 |
SendMessage (hwnd, WM_DESTROY, 0, 0); |
| 296 |
break; |
| 297 |
|
| 298 |
case WM_RBUTTONUP: |
| 299 |
SetForegroundWindow (hwnd); |
| 300 |
GetCursorPos (&p); |
| 301 |
hm = LoadMenu (glob_hinst, MAKEINTRESOURCE (IDR_INIT)); |
| 302 |
popup = GetSubMenu (hm, 0); |
| 303 |
TrackPopupMenu (popup, TPM_RIGHTALIGN, p.x, p.y, 0, hwnd, NULL); |
| 304 |
PostMessage (hwnd, WM_USER, 0, 0); |
| 305 |
DestroyMenu (popup); |
| 306 |
DestroyMenu (hm); |
| 307 |
break; |
| 308 |
} |
| 309 |
break; |
| 310 |
} |
| 311 |
|
| 312 |
return DefWindowProc (hwnd, msg, wparam, lparam); |
| 313 |
} |
| 314 |
|
| 315 |
|
| 316 |
/* Main entry function. */ |
| 317 |
int WINAPI |
| 318 |
WinMain (HINSTANCE hinst, HINSTANCE prev, LPSTR cmdline, int cmd_show) |
| 319 |
{ |
| 320 |
WNDCLASS wc; |
| 321 |
HWND hwnd; |
| 322 |
MSG msg; |
| 323 |
int idx; |
| 324 |
|
| 325 |
memset (&opt, 0, sizeof (opt)); |
| 326 |
idx = check_for_conflict_apps (); |
| 327 |
if (idx > 0) { |
| 328 |
char buf[256]; |
| 329 |
_snprintf (buf, sizeof (buf)-1, |
| 330 |
"GPGoe found an instance of a program which\n" |
| 331 |
"might be effect the functionality of the plugin.\n" |
| 332 |
"\n" |
| 333 |
"Name of the process: %s\n" |
| 334 |
"\n" |
| 335 |
"Continue to load the plug-in?", conflict_apps[idx]); |
| 336 |
idx = MessageBox (NULL, buf, "GPGOE Warning", MB_ICONWARNING|MB_YESNO); |
| 337 |
if (idx == IDNO) |
| 338 |
return 0; |
| 339 |
} |
| 340 |
|
| 341 |
create_registry_key (); |
| 342 |
glob_hinst = hinst; |
| 343 |
CreateMutex (NULL, 1, "GPGOE"); |
| 344 |
if (GetLastError () == ERROR_ALREADY_EXISTS) |
| 345 |
return 0; |
| 346 |
|
| 347 |
memset (&wc, 0, sizeof(wc)); |
| 348 |
wc.hInstance = hinst; |
| 349 |
wc.lpszClassName = "GPGOE"; |
| 350 |
wc.lpfnWndProc = (WNDPROC)gpgoe_main_proc; |
| 351 |
if (!RegisterClass (&wc)) { |
| 352 |
MessageBox (NULL, "Couldn't register the window class", "Error", |
| 353 |
MB_ICONERROR|MB_OK); |
| 354 |
return 1; |
| 355 |
} |
| 356 |
|
| 357 |
hwnd = CreateWindow ("GPGOE", "GPGOE", 0, 0, 0, 0, 0, |
| 358 |
NULL, NULL, hinst, NULL); |
| 359 |
if (!hwnd) { |
| 360 |
MessageBox (NULL, "Could not create window", |
| 361 |
"Error", MB_ICONERROR|MB_OK); |
| 362 |
return 1; |
| 363 |
} |
| 364 |
UpdateWindow (hwnd); |
| 365 |
while (GetMessage (&msg, hwnd, 0, 0)) { |
| 366 |
TranslateMessage (&msg); |
| 367 |
DispatchMessage (&msg); |
| 368 |
} |
| 369 |
return 0; |
| 370 |
} |
Parent Directory
| 
Revision Log