/[winpt]/trunk/Src/WinPT.cpp
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revision 6 by twoaday, Mon Apr 4 06:59:24 2005 UTC revision 337 by twoaday, Sun Nov 27 12:38:43 2011 UTC
# Line 1  Line 1 
1  /* WinPT.cpp - Windows Privacy Tray (WinPT)  /* WinPT.cpp - Windows Privacy Tray (WinPT)
2   *      Copyright (C) 2000-2005 Timo Schulz   *      Copyright (C) 2000-2009 Timo Schulz
3   *   *
4   * This file is part of WinPT.   * This file is part of WinPT.
5   *   *
6   * WinPT is free software; you can redistribute it and/or modify   * WinPT is free software; you can redistribute it and/or modify
7   * it under the terms of the GNU General Public License as published by   * it under the terms of the GNU General Public License as published by
8   * the Free Software Foundation; either version 2 of the License, or   * the Free Software Foundation; either version 2 of the License, or
9   * (at your option) any later version.   * (at your option) any later version.
10   *   *
11   * WinPT is distributed in the hope that it will be useful,   * WinPT is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License for more details.   * GNU General Public License for more details.
15   *   */
16   * You should have received a copy of the GNU General Public License  #ifdef HAVE_CONFIG_H
17   * along with WinPT; if not, write to the Free Software Foundation,  #include <config.h>
18   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA  #endif
19   */  
20    #include <windows.h>
21  #include <windows.h>  #include <shlobj.h>
22    
23  #include "../resource.h"  #include "resource.h"
24  #include "wptTypes.h"  #include "wptTypes.h"
25  #include "wptW32API.h"  #include "wptW32API.h"
26  #include "wptVersion.h"  #include "wptVersion.h"
27  #include "wptErrors.h"  #include "wptErrors.h"
28  #include "wptGPG.h"  #include "wptGPG.h"
29  #include "wptRegistry.h"  #include "wptRegistry.h"
30  #include "wptCommonCtl.h"  #include "wptCommonCtl.h"
31  #include "wptDlgs.h"  #include "wptDlgs.h"
32  #include "wptNLS.h"  #include "wptNLS.h"
33  #include "wptKeyserver.h"  #include "wptKeyserver.h"
34  #include "wptCard.h"  #include "wptCard.h"
35  #include "wptFileManager.h"  #include "wptFileManager.h"
36  #include "wptContext.h"  #include "wptContext.h"
37    #include "wptCardEdit.h"
38  HINSTANCE glob_hinst; /* global instance for the dialogs */  #include "wptCrypto.h"
39  HWND glob_hwnd; /* global window handle for the dialogs */  #include "wptUTF8.h"
40  HWND activ_hwnd;  
41  LOCK mo_file;  void remove_crit_file_attrs (const char *fname, int force);
42  int scard_support = 0;  
43  int debug = 0;  /* Global variables. */
44  int mobile = 0;  HINSTANCE glob_hinst;   /* global instance for the dialogs */
45  int gpg_read_only = 0;  HWND glob_hwnd;         /* global window handle for the dialogs */
46  char gpgver[3];  int scard_support = 0;
47    int debug = 0;
48    int gpg_read_only = 0;
49  static void  char gpgver[3];
50  update_keycache (HWND hwnd)  /* End */
51  {  
52      refresh_cache_s rcs = {0};  
53      rcs.kr_reload = 0;  /* Load the key cache and rebuild the signature cache. */
54      rcs.kr_update = 1;  int
55      rcs.tr_update = 1;  update_keycache (HWND hwnd)
56      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  {
57                      keycache_dlg_proc, (LPARAM)&rcs);      int err;
58  } /* update_keycache */      refresh_cache_s rcs;
59    
60        /* no need to rebuild the sig cache each time. */
61  static char *      memset (&rcs, 0, sizeof (rcs));
62  get_gettext_lang (void)      rcs.kring_update = 1;
63  {          err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
64      char * fname;                      keycache_dlg_proc, (LPARAM)&rcs);
65      fname = get_reg_entry_mo ();      if (err) {
66      if (!fname)          char *cfgf = get_gnupg_config ();
67          return NULL;          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
68      return fname;              msg_box (GetDesktopWindow (),
69  } /* get_gettext_lang */                       _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
70            free_if_alloc (cfgf);
71            return -1;
72  static void      }
73  load_gettext (void)      return 0;
74  {  }
75      char * nls = NULL;  
76      char * file = NULL;  
77    /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
78      nls = get_gettext_lang ();  void
79      if (nls) {  gpg_set_debug_mode (int val)
80          set_gettext_file ("winpt", nls);  {
81          file = make_filename (nls, "winpt", "mo");      static char buf[MAX_PATH+1];
82          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {      char tmp[128];
83              msg_box (NULL, _("Could not initizalize file lock.\n"      
84                               "Native Language Support"),      /* XXX: no gpgme.dbg is created. */
85                       _("WinPT Error"), MB_ERR);      if (val > 0) {
86          }          GetTempPath (DIM (tmp)-1, tmp);
87          free_if_alloc (nls);          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
88          free_if_alloc (file);          putenv (buf);
89      }      }
90  } /* load_gettext */      else
91            putenv ("GPGME_DEBUG=");
92    }
93  /* check if the default key from the gpg.conf file is available in the  
94     keyring. if not, bail out because encryption won't work properly then. */  
95  static int  /* Return true if the GPG environment is useable. */
96  check_default_key (gpgme_keycache_t kc)  static bool
97  {  gpg_prefs_ok (void)
98      gpgme_key_t key;  {
99      gpgme_error_t err = GPGME_No_Error;      char *p = get_reg_entry_gpg4win ("gpg.exe");
100      char * defkey;      if (!p || file_exist_check (p) != 0) {
101            free_if_alloc (p);
102      defkey = get_gnupg_default_key ();          p = get_reg_entry_gpg ("gpgProgram");
103      if (defkey)          if (!p || file_exist_check (p) != 0) {
104          err = gpgme_keycache_find_key (kc, defkey, 0, &key);              free_if_alloc (p);
105      free_if_alloc (defkey);              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
106      return err? -1 : 0;              return false;
107  } /* check_default_key */          }
108        }
109        free_if_alloc (p);
110  /* Return the WinPT program file name (with full pathname). */      p = get_reg_entry_gpg4win (NULL);
111  static const char *      if (!p || dir_exist_check (p) != 0) {
112  get_prog_part (const char * fname, int use_cwd)          free_if_alloc (p);
113  {          p = get_reg_entry_gpg ("HomeDir");
114      static char program[1024];          if (!p || dir_exist_check (p) != 0) {
115      char currdir[256], * cmd = NULL;              free_if_alloc (p);
116      int j;              log_debug ("gpg_prefs_ok: could not determine home directory");
117                        return false;
118      memset (currdir, 0, DIM (currdir));          }
119      memset (program, 0, DIM (program));      }
120                free_if_alloc (p);
121      if (use_cwd) {      return true;
122          GetCurrentDirectory (DIM (currdir)-1, currdir);  }
123          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);  
124      }  
125      else {  /* Check gpg files if they are read-only and ask the user
126          cmd = GetCommandLine ();     if this should be corrected. */
127          if (cmd == NULL)  static void
128              return NULL;  check_readonly_attr (const char *homedir)
129          strncpy (currdir, cmd, 255);  {
130          j = strlen (currdir);      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
131          while (j--) {  
132              if (currdir[j] == '\\')      for (int i=0; files[i] != NULL; i++) {
133                  break;                    char *file = make_filename (homedir, files[i], NULL);
134          }          remove_crit_file_attrs (file, 0);
135          currdir[j] = 0;          free_if_alloc (file);
136          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);      }
137      }  }
138      return program;  
139  } /* get_prog_part */  
140    /* Load the GPG environment. On the first start, some
141       checks are performed to find out in what state GPG is.
142  static int     Return value: 0  everything OK.
143  check_crypto_engine (void)                   >0  fatal error.
144  {                   -1 public keyring is empty or does not exist. */
145      int ma=1, mi=2, pa=4; /* GPG 1.2.4 */  static int
146      int rc;  load_gpg_env (void)
147    {
148      rc = check_gnupg_engine (&ma, &mi, &pa);      SECURITY_ATTRIBUTES sec_attr;
149      if (rc == -1) {      char *p;
150          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);      char *pkr;
151          return rc;      int err = 0;
152      }  
153      else if (rc) {      p = get_reg_entry_gpg4win ("gpg.exe");
154          log_box (_("WinPT Error"), MB_ERR,      if (!p)
155                   _("Sorry, you need a newer GPG version.\n"          return (1);
156                     "GPG version %d.%d.%d requred GPG version 1.2.4"),      if (file_exist_check (p)) {
157                     ma, mi, pa);          free_if_alloc (p);
158          return rc;          return (1);
159      }      }
160      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */      free_if_alloc (p);
161      if (ma > 1 || mi >= 9 || mi >= 4)  
162          scard_support = 1;      p = get_reg_entry_gpg ("HomeDir");
163        if (!p || dir_exist_check (p) != 0) {
164      gpgver[0] = ma;          free_if_alloc (p);
165      gpgver[1] = mi;          p = multi_gnupg_path (0);
166      gpgver[2] = pa;      }
167      return rc;      if (p && dir_exist_check (p)) {
168  } /* check_crypto_engine */          memset (&sec_attr, 0, sizeof (sec_attr));
169            sec_attr.nLength = sizeof (sec_attr);
170            if (!CreateDirectory (p, &sec_attr)) {
171  static int              msg_box (GetDesktopWindow (),
172  load_keyserver_conf (int quiet)                       _("Could not create GPG home directory"),
173  {                       _("WinPT Error"), MB_ERR);
174      const char * t;              free_if_alloc (p);
175      int rc;              return (2);
176            }
177      if (reg_prefs.kserv_conf)      }
178          t = reg_prefs.kserv_conf;      check_readonly_attr (p);
179      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))      pkr = make_filename (p, "pubring", "gpg");
180          t = get_prog_part ("keyserver.conf", 0);      free_if_alloc (p);
181      else      if (get_file_size (pkr) == 0)
182          t = "keyserver.conf";          err = -1;
183      rc = kserver_load_conf (t);      free_if_alloc (pkr);
184      if (rc && !quiet)      return err;
185          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);  }
186      return rc;  
187  }  
188    /* check if the default key from the gpg.conf file is available in the
189       keyring. if not, bail out because encryption won't work properly then. */
190  static void  static int
191  enable_mobile_mode (void)  check_default_key (void)
192  {  {
193      memset (&reg_prefs, 0, sizeof (reg_prefs));      gpgme_key_t key;
194      reg_prefs.always_trust = 0;      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
195      reg_prefs.auto_backup = 0;      gpg_keycache_t kc;
196      reg_prefs.cache_time = 0;      char *defkey;
197      reg_prefs.expert = 0;  
198      reg_prefs.keylist_mode = 1;      kc = keycache_get_ctx (0);
199      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      defkey = get_gnupg_default_key ();
200      reg_prefs.no_zip_mmedia = 1;      if (defkey != NULL) {
201      reg_prefs.use_tmpfiles = 1;          err = gpg_keycache_find_key (kc, defkey, 0, &key);
202      reg_prefs.word_wrap = 80;          if (err) {
203      reg_prefs.use_viewer = 0; /* XXX */              free_if_alloc (defkey);
204  }              return -1;
205            }
206        }
207  int WINAPI      else {
208  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)          /* Actually this is just a warning but we still continue. */
209  {          msg_box (GetDesktopWindow (), _("No useable secret key found."),
210      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};                   _("WinPT Warning"), MB_WARN);
211      HACCEL accel_tab;          return 0;
212      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;      }
213      int first_start = 0, start_gpgprefs = 0;  
214      const char * s;      /* Because the secret key listing has no information
215      MSG msg;         about the validity/status, we need to check the public key. */
216      HWND hwnd;      kc = keycache_get_ctx (1);
217        if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
218      glob_hinst = hinst;          (key->revoked || key->expired)) {
219                msg_box (GetDesktopWindow (), _("Default secret key is unuseable"),
220      gpgme_lib_init ();                   _("WinPT Warning"), MB_ERR);
221      #ifdef _DEBUG          free_if_alloc (defkey);
222      gpgme_set_debug_mode (1);          return -1;
223      #endif      }
224      gpgme_set_pgm_string ("WinPT "PGM_VERSION);      free_if_alloc (defkey);
225        return 0;
226      s = PTD_get_version ();  }
227      if (strcmp (s, "0.8.0")) {  
228          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,  
229                   _("Please update your PTD.dll to the newest version, "  /* Check that the underlying crypto engine fullfills the minimal
230                     "the version (%s) you use is too old."), s);     requirements so all commands work properly. */
231          return 0;  static bool
232      }  check_crypto_engine (void)
233    {
234      if (gpg_md_selftest ()) {      int ma = 0, mi = 0, pa = 0;
235          msg_box (NULL, _("Cryptographic selftest failed."),      int rc;
236                   _("WinPT Error"), MB_ERR);  
237          return 0;      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
238      }      if (rc == -1) {
239            msg_box (GetDesktopWindow (), _("Could not read GnuPG version."),
240      if (cmdline && stristr (cmdline, "--mobile"))                   _("WinPT Error"), MB_ERR);
241          mobile = 1;          return false;
242        }
243      set_default_kserver ();      else if (rc) {
244            log_box (_("WinPT Error"), MB_ERR,
245      if (!mobile) {                   _("A newer GPG version is needed.\n"
246          regist_inst_gnupg (1);                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
247          regist_inst_winpt (1, &created);                     ma, mi, pa);
248      }          return false;
249      else {      }
250          enable_mobile_mode ();      
251          /* XXX: ask for GPG path */      // TODO: smart card support needs to be revamped
252          created = 1; /* Disable registry writing */      // and adjusted according to newer OpenPGP cards.
253      }      /*
254        if ((ma > 1 || pa >= 4) && pcsc_available ())
255      if (!created) {          scard_support = 1;
256          memset (&reg_prefs, 0, sizeof (reg_prefs));      */
257          reg_prefs.use_tmpfiles = 1; /* default */      scard_support = 0;
258          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */      
259          get_reg_winpt_prefs (&reg_prefs);      gpgver[0] = ma;
260          if (!reg_prefs.no_hotkeys)      gpgver[1] = mi;
261              hotkeys_modify ();      gpgver[2] = pa;
262      }      return true;
263    }
264      rc = gnupg_check_homedir ();  
265      if (rc) {  
266          log_box (_("WinPT Error"), MB_ERR,  
267                   _("GPG home directory is not set correctly.\n"  /* Check if both keyrings are empty. This indicates that
268                     "Please check the GPG registry settings:\n%s."),     WinPT should offer to generate a key pair. */
269                   winpt_strerror (rc));  static bool
270          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,  check_for_empty_keyrings (bool pub_only)
271                                             _("Select GPG Public Keyring"),  {
272                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),      char *p;
273                                             NULL);      int n;
274          if (s && !file_exist_check (s))  
275          {      n=0;
276              size_t n;      p = get_gnupg_keyring (1, 0);
277              char * p = strrchr (s, '\\');      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
278              if (!p)          n++;
279                  BUG (0);      free_if_alloc (p);
280              n = p - s;      if (pub_only)
281              if (n)          return n == 1? true : false;
282              {      p = get_gnupg_keyring (0, 0);
283                  char * file = new char[n+1];      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
284                  if (!file)          n++;
285                      BUG (NULL);      free_if_alloc (p);
286                  memset (file, 0, n);      return n==2? true : false;
287                  memcpy (file, s, n);  }
288                  file[n] = '\0';          
289                  set_reg_entry_gpg ("HomeDir", file);  
290                  free_if_alloc (file);  
291                  gnupg_check_homedir (); /* change gpgProgram if needed */  /* Display info message that WinPT is now in debug mode. */
292              }  void
293          }  winpt_debug_msg (void)
294          else {  {      
295              msg_box (NULL, _("GPG home directory could not be determited."),      char output[512];
296                       _("WinPT Error"), MB_ERR);      char temp[MAX_PATH+1];
297              goto start;          
298          }      GetTempPath (DIM (temp) -1, temp);
299      }      _snprintf (output, DIM (output)-1,
300            "The GPGME output file is %sgpgme.dbg\n"
301      rc = check_gnupg_prog ();          "The WinPT output file is %swinpt.log\n", temp, temp);
302      if (rc) {      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
303          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  }
304                               "Do you want to start the GPG preferences to "  
305                               "correct  this problem?"), _("WinPT Error"),  
306                               MB_INFO|MB_YESNO) == IDYES)  /* Search for insecure ElGamal keys and return the
307              start_gpgprefs = 1;     number of founded keys. */
308          else  static int
309          {  count_insecure_elgkeys (void)
310              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  {
311              return 0;      gpg_keycache_t pc;
312          }      gpgme_key_t key;
313      }      int n;
314    
315      rc = gnupg_access_files ();      n=0;
316      if (!start_gpgprefs && rc)      pc = keycache_get_ctx (1);
317      {      while (!gpg_keycache_next_key (pc, 0, &key)) {
318          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
319          {              n++;
320              ec = msg_box (NULL,      }
321                  _("Could not access and/or find the public and secret keyring.\n"      gpg_keycache_rewind (pc);
322                    "If this is an accident, quit the program and fix it.\n\n"      return n;
323                    "Continue if you want that WinPT offers you more choices.\n"),  }
324                    "WinPT", MB_INFO|MB_YESNO);  
325              if (ec == IDYES)  
326                  first_start = 1;  /* Return 1 if the current OS version is at least Windows XP */
327          }  static int
328          if (!first_start)  check_os_version (void)
329          {  {
330              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      OSVERSIONINFOA osver;    
331              return 0;      memset (&osver, 0, sizeof (osver));
332          }      osver.dwOSVersionInfoSize = sizeof (osver);
333      }      
334        if (!GetVersionEx (&osver)) {
335      if (!first_start)          MessageBox (NULL, _("Could not read the OS version."), _("WinPT Error"), MB_ERR);
336      {          return 0;
337          rc = gpg_check_permissions (1);      }
338          if (rc && rc == 2)  
339              gpg_read_only = 1;      if (osver.dwMajorVersion < 5 ||
340          else if (rc)          (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)) {
341              return 0;          MessageBox (NULL, _("WinPT requires Windows XP or higher."), _("WinPT Error"), MB_ERR);
342      }          return 0;
343        }
344      load_gettext ();      
345      init_gnupg_table ();      return 1;
346    }
347      nfiles = fm_parse_command_line (cmdline);      
348      if (nfiles > 0)  /* Main entry point. */
349          return 0;  int WINAPI
350    WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
351      if (cmdline && stristr (cmdline, "--wipe-freespace")) {  {
352          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
353                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,      HACCEL accel_tab;
354                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);      MSG msg;
355          free_gnupg_table ();      HWND hwnd = NULL;
356          return 0;      WORD ver[3], ptdver[4];
357      }      
358        const char *s;
359      load_keyserver_conf (cmdline? 1 : 0);      int rc, ec, created = 0;
360      if (cmdline && (stristr (cmdline, "--keymanager")      int first_start = 0, start_gpgprefs = 0;
361                  || stristr (cmdline, "--cardmanager"))) {      int winpt_inst_found = 0;
362          update_keycache (GetDesktopWindow ());      int start_manager = 0;    
363          if (stristr (cmdline, "keymanager"))  
364              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      if (!check_os_version ())
365                              GetDesktopWindow(), keymanager_dlg_proc, NULL,          return 0;
366                              _("Key Manager"), IDS_WINPT_KEYMISC);      
367          else {      glob_hinst = hinst;
368              gpgme_card_t crd = smartcard_init ();      
369              if (crd)      /* Allow to shutdown the process, for instance by an installer */
370                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      if (cmdline && stristr (cmdline, "--stop")) {
371                                    GetDesktopWindow(), card_edit_dlg_proc,          hwnd = FindWindow ("WinPT", "WinPT");
372                                    (LPARAM)crd, _("Card Manager"),          if (hwnd != NULL)
373                                    IDS_WINPT_CARD_EDIT);              PostMessage (hwnd, WM_DESTROY, 0, 0);
374              gpgme_card_release (crd);          return 0;
375          }      }    
376          keycache_release ();  
377          free_gnupg_table ();      get_file_version ("winpt.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
378          return 0;      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1], &ptdver[2], &ptdver[3]);
379      }      if (!ec && (ptdver[0] != ver[0] || ptdver[1] != ver[1] || ptdver[2] != ver[2])) {
380            log_box (_("WinPT Error"), MB_ERR,
381      CreateMutex (NULL, TRUE, PGM_NAME);                   _("The PTD.dll file has a different version than WinPT.exe\n"
382      if (GetLastError () == ERROR_ALREADY_EXISTS) {                     "Please update the PTD.dll to version %d.%d.%d"),
383          free_gnupg_table ();                     ver[0], ver[1], ver[2]);
384          return 0;          return 0;
385      }      }
386    
387      if (cmdline) {      s = gpgme_check_version (NEED_GPGME_VERSION);
388          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      if (!s || !*s) {
389              gpgme_set_debug_mode (1);          msg_box (GetDesktopWindow (),
390              winpt_debug_msg ();                   _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
391              debug = 1;                   _("WinPT Error"), MB_ERR);
392          }          return 0;
393      }      }
394    
395      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      CreateMutex (NULL, TRUE, PGM_NAME);
396      rc = RegisterClass (&wc);      if (GetLastError () == ERROR_ALREADY_EXISTS)
397      if (rc == FALSE) {          winpt_inst_found = 1;
398          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);      
399          free_gnupg_table ();      gettext_set_user_domain ();
400          return 0;  
401      }      regist_inst_gnupg (1);
402        regist_inst_winpt (1, &created);
403      hwnd = CreateWindow (PGM_NAME,  
404                           PGM_NAME,      if (!created) {
405                           0, 0, 0, 0, 0,          memset (&reg_prefs, 0, sizeof (reg_prefs));
406                           NULL,          get_reg_winpt_prefs (&reg_prefs);
407                           NULL,          reg_prefs.fm.progress = 0; /* TODO: fix the bug and enable it again */
408                           hinst,          if (gnupg_load_config () == -2)
409                           NULL);              msg_box (GetDesktopWindow (),
410      if (hwnd == NULL) {                       _("The gpg.conf file contains the 'textmode' option\n"
411          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);                         "which leads to broken binary output during decryption.\n"
412          free_gnupg_table ();                         "If this is on purpose, just continue otherwise the option should be disabled."),
413          return 0;                       _("WinPT Error"), MB_ERR);
414      }      }
415      glob_hwnd = hwnd;  
416      UpdateWindow (hwnd);      if (is_gpg4win_installed ())
417            load_gpg_env (); /* TODO: check return code. */
418      if (!first_start && !start_gpgprefs) {  
419          gnupg_backup_options (1);      rc = gnupg_check_homedir ();
420          gnupg_backup_options (0);      if (rc) {
421                    char *p;
422          rc = check_crypto_engine ();  
423          if (rc) {          log_box (_("WinPT Error"), MB_ERR,
424              DestroyWindow (hwnd);                   _("GPG home directory is not set correctly.\n"
425              free_gnupg_table ();                     "Please check the GPG registry settings:\n%s."),
426              return 0;                   winpt_strerror (rc));
427          }          s = get_fileopen_dlg (GetActiveWindow (),
428      }                                _("Select GPG Public Keyring"),
429                                  "GPG Keyrings (*.gpg)\0*.gpg\0\0",
430      if (start_gpgprefs)                                NULL);
431      {          if (s != NULL && (p=strrchr (s, '\\'))) {
432          char *ring;              char *path = substr (s, 0, (p-s));
433          size_t size = 0;  
434          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,              set_reg_entry_gpg ("HomeDir", path);
435                          gpgprefs_dlg_proc, NULL);              free_if_alloc (path);
436          ring = get_gnupg_keyring (0, !NO_STRICT);          }
437          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)          else {
438              first_start = 1; /* The keyring is empty! */              msg_box (GetDesktopWindow (),
439          free_if_alloc (ring);                       _("GPG home directory could not be determined."),
440      }                       _("WinPT Error"), MB_ERR);
441                goto start;
442      if (first_start) {          }
443          struct key_wizard_s c, dummy;      }
444  start:  
445          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,      rc = check_gnupg_prog ();
446                          first_run_dlg_proc, (LPARAM)&dummy);      if (rc) {
447          switch (dummy.interactive)          if (msg_box (GetDesktopWindow (),
448          {                       _("Could not find the GPG binary (gpg.exe).\n"
449          case SETUP_KEYGEN:                         "Do you want to start the GPG preferences to "
450              c.interactive = 1;                         "correct  this problem?"), _("WinPT Error"),
451              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,                       MB_INFO|MB_YESNO) == IDYES)
452                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);              start_gpgprefs = 1;
453              if (!rc)          else {
454                  goto start;              msg_box (GetDesktopWindow (),
455              break;                       winpt_strerror (rc), _("WinPT Error"), MB_ERR);
456                return 0;
457          case SETUP_IMPORT:          }
458              rc = gnupg_copy_keyrings ();      }
459              if (rc) {  
460                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      rc = gnupg_access_files ();
461                  goto start;      if (!start_gpgprefs && rc) {
462              }          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
463              break;              ec = msg_box (GetDesktopWindow (),
464                    _("Could not access and/or find the public and secret keyring.\n"
465          case SETUP_EXISTING:                    "If this is an accident, quit the program and fix it.\n\n"
466              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,                    "Continue if you want WinPT to offer you more choices.\n"),
467                              gpgprefs_dlg_proc, NULL);                    "WinPT", MB_INFO|MB_YESNO);
468              break;              if (ec == IDYES)
469                    first_start = 1;
470          case -1:          }
471              DestroyWindow (hwnd);          if (!first_start) {
472              free_gnupg_table ();              msg_box (GetDesktopWindow (), winpt_strerror (rc), _("WinPT Error"), MB_ERR);
473              return 0;              return 0;
474          }          }
475          update_keycache (hwnd);      }
476          check_crypto_engine ();      if (check_for_empty_keyrings (false))
477      }          first_start = 1;
478      else {  
479          gpgme_keycache_t c;      if (!first_start) {
480          update_keycache (hwnd);          rc = gpg_check_permissions (1);
481          c = keycache_get_ctx (1);          if (rc && rc == 2) /* 2 means read-only mode. */
482          if (!c || !gpgme_keycache_count (c)) {              gpg_read_only = 1;
483              gnupg_display_error ();          else if (rc)
484              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"              return 0;
485                               "Please check your GPG config (keyrings, pathes...)"),      }
486                               _("WinPT Error"), MB_ERR);      
487              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"      init_gnupg_table ();
488                                    "Do you want to start the GPG preferences dialog?"),  
489                              "WinPT", MB_INFO|MB_YESNO);      if (fm_parse_command_line (cmdline) > 0) {
490              if (ec == IDYES) {          free_gnupg_table ();
491                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          return 0;
492                                  gpgprefs_dlg_proc, NULL);      }
493                  update_keycache (hwnd);  
494              }      rc = kserver_load_conf ();
495              else {      if (rc)
496                  DestroyWindow (hwnd);          msg_box (GetDesktopWindow (), winpt_strerror (rc),
497                  free_gnupg_table ();                   _("Keyserver"), MB_ERR);
498                  return 0;  
499              }      if (cmdline && (stristr (cmdline, "--keymanager")
500          }                  || stristr (cmdline, "--cardmanager"))) {
501          if (check_default_key (c)) {          /* If an instance of WinPT is running, just send the command
502              char * p = get_gnupg_default_key ();             to open the key manager. Otherwise start a new instance. */
503              log_box (_("WinPT Error"), MB_ERR,          HWND tray = FindWindow ("WinPT", "WinPT");
504                       _("Default key from the GPG options file could not be found.\n"          if (stristr (cmdline, "keymanager"))
505                         "Please check your gpg.conf (options) to correct this:\n\n"              start_manager = ID_WINPT_KEY;
506                         "%s: public key not found."), p? p : "[null]");          else
507              free_if_alloc (p);              start_manager = ID_WINPT_CARD;
508              DestroyWindow (hwnd);          if (tray != NULL) {
509              free_gnupg_table ();              PostMessage (tray, WM_COMMAND, start_manager, 0);
510              return 0;              free_gnupg_table ();
511          }              return 0;
512          if (count_insecure_elgkeys ())          }
513              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,      }
514                              elgamal_warn_dlg_proc, NULL);  
515      }      /* If we found another WinPT instance, just quit to avoid it
516           will be executed twice. */
517      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      if (winpt_inst_found) {
518      keyring_check_last_access (); /* init */          log_debug ("%s", "WinMain: WinPT is already running.");
519      while (GetMessage (&msg, hwnd, 0, 0)) {          free_gnupg_table ();
520          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {          return 0;
521              TranslateMessage (&msg);      }
522              DispatchMessage (&msg);  
523          }      if (cmdline && (stristr (cmdline, "--enable-debug") ||
524      }                      stristr (cmdline, "--debug"))) {
525                    gpg_set_debug_mode (1);
526      return 0;          winpt_debug_msg ();
527  } /* WinMain */          debug = 1;
528        }
529    
530        wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));
531        rc = RegisterClass (&wc);
532        if (rc == FALSE) {
533            msg_box (GetDesktopWindow (), _("Could not register window class"),
534                     _("WinPT Error"), MB_ERR);
535            free_gnupg_table ();
536            return 0;
537        }
538    
539        hwnd = CreateWindow (PGM_NAME,
540                             PGM_NAME,
541                             0, 0, 0, 0, 0,
542                             NULL,
543                             NULL,
544                             hinst,
545                             NULL);
546        if (hwnd == NULL) {
547            msg_box (GetDesktopWindow (),
548                     _("Could not create window"),
549                     _("WinPT Error"), MB_ERR);
550            free_gnupg_table ();
551            return 0;
552        }
553        glob_hwnd = hwnd;
554        UpdateWindow (hwnd);
555    
556        if (!first_start && !start_gpgprefs) {
557            gnupg_backup_options ();        
558            if (!check_crypto_engine ()) {
559                DestroyWindow (hwnd);
560                free_gnupg_table ();
561                return 0;
562            }
563        }
564        
565        if (start_gpgprefs) {
566            DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
567                            gpgprefs_dlg_proc, 0);
568            if (check_for_empty_keyrings (true))
569                first_start = 1; /* The public keyring is empty. */
570        }
571    
572        if (first_start) {
573            struct genkey_s c;
574            int choice;
575            HWND h;
576    start:
577            h = GetDesktopWindow ();
578            if (!gpg_prefs_ok ())
579                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,
580                                gpgprefs_dlg_proc, 0);
581            choice = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,
582                                     first_run_dlg_proc, 0);
583            switch (choice) {
584            case SETUP_KEYGEN:
585                c.interactive = 1;
586                c.first_start = 1;
587                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,
588                                     h, keygen_wizard_dlg_proc, (LPARAM)&c);
589                if (!rc)
590                    goto start;
591                break;
592    
593            case SETUP_IMPORT:
594                rc = gnupg_copy_keyrings ();
595                if (rc) {
596                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
597                    goto start;
598                }
599                break;
600    
601            case SETUP_EXISTING:
602                rc = gnupg_import_keypair ();
603                if (rc) {
604                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
605                    goto start;
606                }
607                break;
608    
609            case SETUP_CARDGEN:
610                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_CARD_KEYGEN,
611                                     h, card_keygen_dlg_proc, 0);
612                if (!rc)
613                    goto start;
614                break;
615    
616            case 0: /* Cancel/Abort. */
617            default:
618                DestroyWindow (hwnd);
619                free_gnupg_table ();
620                return 0;
621            }
622            update_keycache (hwnd);
623            if (!check_crypto_engine ()) {
624                DestroyWindow (hwnd);
625                free_gnupg_table ();
626                keycache_release (1);
627                return 0;
628            }
629        }
630        else {
631            gpg_keycache_t c;
632            if (update_keycache (hwnd)) {
633                DestroyWindow (hwnd);
634                free_gnupg_table ();
635                keycache_release (1);
636                return 0;
637            }
638            /* XXX: rewrite this part. */
639            c = keycache_get_ctx (1);
640            if (!gpg_keycache_get_size (c)) {
641                msg_box (hwnd, _("The keycache was not initialized or is empty.\n"
642                                 "Please check your GPG config (keyrings, pathes...)"),
643                                 _("WinPT Error"), MB_ERR);
644                ec = msg_box (GetDesktopWindow (),
645                              _("It seems that GPG is not configured properly.\n"
646                                "Do you want to start the GPG preferences dialog?"),
647                              "WinPT", MB_INFO|MB_YESNO);
648                if (ec == IDYES) {
649                    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
650                                    gpgprefs_dlg_proc, 0);
651                    update_keycache (hwnd);
652                }
653                else {
654                    DestroyWindow (hwnd);
655                    free_gnupg_table ();
656                    keycache_release (1);
657                    return 0;
658                }
659            }      
660            if (check_default_key ()) {
661                char *p = get_gnupg_default_key ();
662                log_box (_("WinPT Error"), MB_ERR,
663                         _("Default key (from the GPG config file) could not be found or is unuseable.\n"
664                           "The default key will be resetted and can be set later in the Key Manager again.\n\n"
665                           "%s: secret key not found."), p? p : "?");
666                set_gnupg_default_key (NULL);
667                free_if_alloc (p);
668            }
669            if (count_insecure_elgkeys ())
670                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,
671                                elgamal_warn_dlg_proc, 0);
672        }
673      
674        if (start_manager)
675            PostMessage (hwnd, WM_COMMAND, start_manager, 0);
676    
677        accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);
678        keyring_check_last_access (); /* init */
679        while (GetMessage (&msg, hwnd, 0, 0)) {
680            if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {
681                TranslateMessage (&msg);
682                DispatchMessage (&msg);
683            }
684        }
685        
686        return 0;
687    }
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