/[winpt]/trunk/Src/WinPT.cpp
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revision 12 by twoaday, Thu Apr 14 12:56:25 2005 UTC revision 407 by twoaday, Mon Feb 6 19:26:03 2012 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;  /* Retrieve the product verion of the given file @fname.
54      rcs.kr_update = 1;     Format: MAJOR.MINOR.PATCH1.PATCH2
55      rcs.tr_update = 1;     Return value: 0 on success. */
56      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  int
57                      keycache_dlg_proc, (LPARAM)&rcs);  get_file_version (const char *fname, WORD *major, WORD *minor, WORD *patch1, WORD *patch2)
58  } /* update_keycache */  {
59        VS_FIXEDFILEINFO *inf;
60        char file[MAX_PATH+1] = {0};
61  static char *      LPVOID buf, data;
62  get_gettext_lang (void)      DWORD size;
63  {          UINT qlen;
64      char * fname;      int err = 0;
65      fname = get_reg_entry_mo ();  
66      if (!fname)      strncpy (file, fname, MAX_PATH);
67          return NULL;      size = GetFileVersionInfoSize (file, NULL);
68      return fname;      if (!size)
69  } /* get_gettext_lang */          return -1;
70        
71        buf = (LPVOID)new char[size];
72  static void      if (!buf)
73  load_gettext (void)          BUG (NULL);
74  {      if (!GetFileVersionInfo (file, 0, size, buf)) {
75      char * nls = NULL;          err = -1;
76      char * file = NULL;          goto fail;
77        }
78      nls = get_gettext_lang ();  
79      if (nls) {      qlen = 0;
80          set_gettext_file ("winpt", nls);      VerQueryValue (buf, (char*)"\\", &data, &qlen);
81          file = make_filename (nls, "winpt", "mo");      if (!qlen) {
82          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {          err = -1;
83              msg_box (NULL, _("Could not initizalize file lock.\n"          goto fail;
84                               "Native Language Support"),      }
85                       _("WinPT Error"), MB_ERR);      
86          }      inf = (VS_FIXEDFILEINFO*)data;
87          free_if_alloc (nls);      *major = HIWORD (inf->dwProductVersionMS);
88          free_if_alloc (file);      *minor = LOWORD (inf->dwProductVersionMS);
89      }      *patch1 = HIWORD (inf->dwProductVersionLS);
90  } /* load_gettext */      *patch2 = LOWORD (inf->dwProductVersionLS);
91    
92    fail:
93  /* check if the default key from the gpg.conf file is available in the      delete [](char*)buf;
94     keyring. if not, bail out because encryption won't work properly then. */      return err;
95  static int  }
96  check_default_key (gpgme_keycache_t kc)  
97  {  
98      gpgme_key_t key;  /* Load the key cache and rebuild the signature cache. */
99      gpgme_error_t err = GPGME_No_Error;  int
100      char * defkey;  update_keycache (HWND hwnd)
101    {
102      defkey = get_gnupg_default_key ();      refresh_cache_s rcs;
103      if (defkey)  
104          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      /* no need to rebuild the sig cache each time. */
105      free_if_alloc (defkey);      memset (&rcs, 0, sizeof (rcs));
106      return err? -1 : 0;      rcs.kring_update = 1;
107  } /* check_default_key */      int err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
108                        keycache_dlg_proc, (LPARAM)&rcs);
109        if (err) {
110  /* Return the WinPT program file name (with full pathname). */          char *cfgf = get_gnupg_config ();
111  static const char *          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
112  get_prog_part (const char * fname, int use_cwd)              msg_box (GetDesktopWindow (),
113  {                       _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
114      static char program[1024];          free_if_alloc (cfgf);
115      char currdir[256], * cmd = NULL;          return -1;
116      int j;      }
117                return 0;
118      memset (currdir, 0, DIM (currdir));  }
119      memset (program, 0, DIM (program));  
120            
121      if (use_cwd) {  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
122          GetCurrentDirectory (DIM (currdir)-1, currdir);  void
123          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);  gpg_set_debug_mode (int val)
124      }  {
125      else {      static char buf[MAX_PATH+1];
126          cmd = GetCommandLine ();      
127          if (cmd == NULL)      /* XXX: no gpgme.dbg is created. */
128              return NULL;      if (val > 0) {
129          strncpy (currdir, cmd, 255);          char tmp[128];
130          j = strlen (currdir);          GetTempPath (DIM (tmp)-1, tmp);
131          while (j--) {          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
132              if (currdir[j] == '\\')          putenv (buf);
133                  break;                }
134          }      else
135          currdir[j] = 0;          putenv ("GPGME_DEBUG=");
136          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);  }
137      }  
138      return program;  
139  } /* get_prog_part */  /* Return true if the GPG environment is useable. */
140    static bool
141    gpg_prefs_ok (void)
142  static int  {
143  check_crypto_engine (void)      char *p = get_reg_entry_gpg4win ("gpg.exe");
144  {      if (!p || file_exist_check (p) != 0) {
145      int ma=1, mi=2, pa=4; /* GPG 1.2.4 */          free_if_alloc (p);
146      int rc;          p = get_reg_entry_gpg ("gpgProgram");
147            if (!p || file_exist_check (p) != 0) {
148      rc = check_gnupg_engine (&ma, &mi, &pa);              free_if_alloc (p);
149      if (rc == -1) {              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
150          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);              return false;
151          return rc;          }
152      }      }
153      else if (rc) {      free_if_alloc (p);
154          log_box (_("WinPT Error"), MB_ERR,      p = get_reg_entry_gpg4win (NULL);
155                   _("Sorry, you need a newer GPG version.\n"      if (!p || dir_exist_check (p) != 0) {
156                     "GPG version %d.%d.%d requred GPG version 1.2.4"),          free_if_alloc (p);
157                     ma, mi, pa);          p = get_reg_entry_gpg ("HomeDir");
158          return rc;          if (!p || dir_exist_check (p) != 0) {
159      }              free_if_alloc (p);
160      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */              log_debug ("gpg_prefs_ok: could not determine home directory");
161      if (ma >= 1 && mi >= 4)              return false;
162          scard_support = 1;          }
163        }
164      gpgver[0] = ma;      free_if_alloc (p);
165      gpgver[1] = mi;      return true;
166      gpgver[2] = pa;  }
167      return rc;  
168  } /* check_crypto_engine */  
169    /* Check gpg files if they are read-only and ask the user
170       if this should be corrected. */
171  static int  static void
172  load_keyserver_conf (int quiet)  check_readonly_attr (const char *homedir)
173  {  {
174      const char * t;      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
175      int rc;      
176        log_debug("check if there are gpg files with a read-only attribute");
177      if (reg_prefs.kserv_conf)      for (int i=0; files[i] != NULL; i++) {
178          t = reg_prefs.kserv_conf;          char *file = make_filename (homedir, files[i], NULL);
179      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))          remove_crit_file_attrs (file, 0);
180          t = get_prog_part ("keyserver.conf", 0);          free_if_alloc (file);
181      else      }
182          t = "keyserver.conf";  }
183      rc = kserver_load_conf (t);  
184      if (rc && !quiet)  
185          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);  /* Load the GPG environment. On the first start, some
186      return rc;     checks are performed to find out in what state GPG is.
187  }     Return value: 0  everything OK.
188                     >0  fatal error.
189                     -1 public keyring is empty or does not exist. */
190  static void  static int
191  enable_mobile_mode (void)  load_gpg_env (void)
192  {  {
193      memset (&reg_prefs, 0, sizeof (reg_prefs));      SECURITY_ATTRIBUTES sec_attr;
194      reg_prefs.always_trust = 0;      char *p;
195      reg_prefs.auto_backup = 0;      char *pkr;
196      reg_prefs.cache_time = 0;      int err = 0;
197      reg_prefs.expert = 0;  
198      reg_prefs.keylist_mode = 1;      p = get_reg_entry_gpg4win ("gpg.exe");
199      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      if (!p)
200      reg_prefs.no_zip_mmedia = 1;          return (1);
201      reg_prefs.use_tmpfiles = 1;      if (file_exist_check (p)) {
202      reg_prefs.word_wrap = 80;          free_if_alloc (p);
203      reg_prefs.use_viewer = 0; /* XXX */          return (1);
204  }      }
205        free_if_alloc (p);
206  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);  
207        p = get_reg_entry_gpg ("HomeDir");
208  int WINAPI      if (!p || dir_exist_check (p) != 0) {
209  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)          free_if_alloc (p);
210  {          p = multi_gnupg_path (0);
211      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};      }
212      HACCEL accel_tab;      if (p && dir_exist_check (p)) {
213      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;          memset (&sec_attr, 0, sizeof (sec_attr));
214      int first_start = 0, start_gpgprefs = 0;          sec_attr.nLength = sizeof (sec_attr);
215      const char * s;          if (!CreateDirectory (p, &sec_attr)) {
216      MSG msg;              msg_box (GetDesktopWindow (),
217      HWND hwnd;                       _("Could not create GPG home directory"),
218                         _("WinPT Error"), MB_ERR);
219      glob_hinst = hinst;              free_if_alloc (p);
220                    return (2);
221      gpgme_lib_init ();          }
222      #ifdef _DEBUG      }
223      gpgme_set_debug_mode (1);      check_readonly_attr (p);
224      #endif      pkr = make_filename (p, "pubring", "gpg");
225      gpgme_set_pgm_string ("WinPT "PGM_VERSION);      free_if_alloc (p);
226        if (get_file_size (pkr) == 0)
227      s = PTD_get_version ();          err = -1;
228      if (strcmp (s, "0.8.0")) {      free_if_alloc (pkr);
229          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,      return err;
230                   _("Please update your PTD.dll to the newest version, "  }
231                     "the version (%s) you use is too old."), s);  
232          return 0;  
233      }  /* check if the default key from the gpg.conf file is available in the
234       keyring. if not, bail out because encryption won't work properly then. */
235      if (gpg_md_selftest ()) {  static int
236          msg_box (NULL, _("Cryptographic selftest failed."),  check_default_key (void)
237                   _("WinPT Error"), MB_ERR);  {
238          return 0;      gpgme_key_t key;
239      }      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
240        gpg_keycache_t kc;
241      if (cmdline && stristr (cmdline, "--mobile"))      char *defkey;
242          mobile = 1;  
243        kc = keycache_get_ctx (0);
244      set_default_kserver ();      defkey = get_gnupg_default_key ();
245        if (defkey != NULL) {
246      if (!mobile) {          err = gpg_keycache_find_key (kc, defkey, 0, &key);
247          regist_inst_gnupg (1);          if (err) {
248          regist_inst_winpt (1, &created);              free_if_alloc (defkey);
249      }              return -1;
250      else {          }
251          enable_mobile_mode ();      }
252          /* XXX: ask for GPG path */      else {
253          created = 1; /* Disable registry writing */          /* Actually this is just a warning but we still continue. */
254      }          msg_box (GetDesktopWindow (), _("No useable secret key found."),
255                     _("WinPT Warning"), MB_WARN);
256      if (!created) {          return 0;
257          memset (&reg_prefs, 0, sizeof (reg_prefs));      }
258          reg_prefs.use_tmpfiles = 1; /* default */  
259          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */      /* Because the secret key listing has no information
260          get_reg_winpt_prefs (&reg_prefs);         about the validity/status, we need to check the public key. */
261          if (!reg_prefs.no_hotkeys)      kc = keycache_get_ctx (1);
262              hotkeys_modify ();      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
263      }          (key->revoked || key->expired)) {
264            msg_box (GetDesktopWindow (), _("Default secret key is unuseable"),
265      rc = gnupg_check_homedir ();                   _("WinPT Warning"), MB_ERR);
266      if (rc) {          free_if_alloc (defkey);
267          log_box (_("WinPT Error"), MB_ERR,          return -1;
268                   _("GPG home directory is not set correctly.\n"      }
269                     "Please check the GPG registry settings:\n%s."),      free_if_alloc (defkey);
270                   winpt_strerror (rc));      return 0;
271          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,  }
272                                             _("Select GPG Public Keyring"),  
273                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),  
274                                             NULL);  /* Check that the underlying crypto engine fullfills the minimal
275          if (s && !file_exist_check (s))     requirements so all commands work properly. */
276          {  static bool
277              size_t n;  check_crypto_engine (void)
278              char * p = strrchr (s, '\\');  {
279              if (!p)      int ma = 0, mi = 0, pa = 0;
280                  BUG (0);      int rc;
281              n = p - s;  
282              if (n)      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
283              {      if (rc == -1) {
284                  char * file = new char[n+1];          msg_box (GetDesktopWindow (), _("Could not read GnuPG version."),
285                  if (!file)                   _("WinPT Error"), MB_ERR);
286                      BUG (NULL);          return false;
287                  memset (file, 0, n);      }
288                  memcpy (file, s, n);      else if (rc) {
289                  file[n] = '\0';                  log_box (_("WinPT Error"), MB_ERR,
290                  set_reg_entry_gpg ("HomeDir", file);                   _("A newer GPG version is needed.\n"
291                  free_if_alloc (file);                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
292                  gnupg_check_homedir (); /* change gpgProgram if needed */                     ma, mi, pa);
293              }          return false;
294          }      }
295          else {      
296              msg_box (NULL, _("GPG home directory could not be determited."),      // TODO: smart card support needs to be revamped
297                       _("WinPT Error"), MB_ERR);      // and adjusted according to newer OpenPGP cards.
298              goto start;      /*
299          }      if ((ma > 1 || pa >= 4) && pcsc_available ())
300      }          scard_support = 1;
301        */
302      rc = check_gnupg_prog ();      scard_support = 0;
303      if (rc) {      
304          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"      gpgver[0] = ma;
305                               "Do you want to start the GPG preferences to "      gpgver[1] = mi;
306                               "correct  this problem?"), _("WinPT Error"),      gpgver[2] = pa;
307                               MB_INFO|MB_YESNO) == IDYES)      return true;
308              start_gpgprefs = 1;  }
309          else  
310          {  
311              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
312              return 0;  /* Check if both keyrings are empty. This indicates that
313          }     WinPT should offer to generate a key pair. */
314      }  static bool
315    check_for_empty_keyrings (bool pub_only)
316      rc = gnupg_access_files ();  {
317      if (!start_gpgprefs && rc)      char *p;
318      {      int n;
319          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)  
320          {      n=0;
321              ec = msg_box (NULL,      p = get_gnupg_keyring (1, 0);
322                  _("Could not access and/or find the public and secret keyring.\n"      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
323                    "If this is an accident, quit the program and fix it.\n\n"          n++;
324                    "Continue if you want that WinPT offers you more choices.\n"),      free_if_alloc (p);
325                    "WinPT", MB_INFO|MB_YESNO);      if (pub_only)
326              if (ec == IDYES)          return n == 1? true : false;
327                  first_start = 1;      p = get_gnupg_keyring (0, 0);
328          }      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
329          if (!first_start)          n++;
330          {      free_if_alloc (p);
331              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      return n==2? true : false;
332              return 0;  }
333          }  
334      }  
335    
336      if (!first_start)  /* Display info message that WinPT is now in debug mode. */
337      {  void
338          rc = gpg_check_permissions (1);  winpt_debug_msg (void)
339          if (rc && rc == 2)  {      
340              gpg_read_only = 1;      char output[512];
341          else if (rc)      char temp[MAX_PATH+1];
342              return 0;          
343      }      GetTempPath (DIM (temp) - 1, temp);
344        _snprintf (output, DIM (output)-1,
345      load_gettext ();          "The GPGME output file is %sgpgme.dbg\n"
346      init_gnupg_table ();          "The WinPT output file is %swinpt.log\n", temp, temp);
347        MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
348      nfiles = fm_parse_command_line (cmdline);  }
349      if (nfiles > 0)  
350          return 0;  
351    /* Search for insecure ElGamal keys and return the
352      if (cmdline && stristr (cmdline, "--wipe-freespace")) {     number of founded keys. */
353          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,  static int
354                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,  count_insecure_elgkeys (void)
355                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);  {
356          free_gnupg_table ();      gpg_keycache_t pc;
357          return 0;      gpgme_key_t key;
358      }  
359        int n = 0;
360      load_keyserver_conf (cmdline? 1 : 0);      pc = keycache_get_ctx (1);
361      if (cmdline && (stristr (cmdline, "--keymanager")      while (!gpg_keycache_next_key (pc, 0, &key)) {
362                  || stristr (cmdline, "--cardmanager"))) {          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
363          update_keycache (GetDesktopWindow ());              n++;
364          if (stristr (cmdline, "keymanager"))      }
365              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      gpg_keycache_rewind (pc);
366                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      return n;
367                              _("Key Manager"), IDS_WINPT_KEYMISC);  }
368          else {  
369              gpgme_card_t crd = smartcard_init ();  
370              if (crd)  /* Return 1 if the current OS version is at least Windows XP */
371                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,  static int
372                                    GetDesktopWindow(), card_edit_dlg_proc,  check_os_version (void)
373                                    (LPARAM)crd, _("Card Manager"),  {
374                                    IDS_WINPT_CARD_EDIT);      OSVERSIONINFOA osver;    
375              gpgme_card_release (crd);      memset (&osver, 0, sizeof (osver));
376          }      osver.dwOSVersionInfoSize = sizeof (osver);
377          keycache_release ();      
378          free_gnupg_table ();      log_debug("check OS version");
379          return 0;      if (!GetVersionEx (&osver)) {
380      }          MessageBox (NULL, _("Could not read the OS version."), _("WinPT Error"), MB_ERR);
381            return 0;
382      CreateMutex (NULL, TRUE, PGM_NAME);      }
383      if (GetLastError () == ERROR_ALREADY_EXISTS) {  
384          free_gnupg_table ();      if (osver.dwMajorVersion < 5 ||
385          return 0;          (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)) {
386      }          MessageBox (NULL, _("WinPT requires Windows XP or higher."), _("WinPT Error"), MB_ERR);
387            return 0;
388      if (cmdline) {      }
389          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      
390              gpgme_set_debug_mode (1);      return 1;
391              winpt_debug_msg ();  }
392              debug = 1;      
393          }  /* Main entry point. */
394      }  int WINAPI
395    WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
396      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));  {
397      rc = RegisterClass (&wc);      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
398      if (rc == FALSE) {      HACCEL accel_tab;
399          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);      MSG msg;
400          free_gnupg_table ();      HWND hwnd = NULL;
401          return 0;      WORD ver[3], ptdver[4];
402      }      
403        const char *s;
404      hwnd = CreateWindow (PGM_NAME,      int rc, ec, created = 0;
405                           PGM_NAME,      int first_start = 0, start_gpgprefs = 0;
406                           0, 0, 0, 0, 0,      int winpt_inst_found = 0;
407                           NULL,      int start_manager = 0;    
408                           NULL,  
409                           hinst,      if (!check_os_version ())
410                           NULL);          return 0;
411      if (hwnd == NULL) {      
412          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);      glob_hinst = hinst;
413          free_gnupg_table ();      
414          return 0;      /* Allow to shutdown the process, for instance by an installer */
415      }      if (cmdline && stristr (cmdline, "--stop")) {
416      glob_hwnd = hwnd;          hwnd = FindWindow ("WinPT", "WinPT");
417      UpdateWindow (hwnd);          if (hwnd != NULL)
418                PostMessage (hwnd, WM_DESTROY, 0, 0);
419      if (!first_start && !start_gpgprefs) {          return 0;
420          gnupg_backup_options (1);      }    
421          gnupg_backup_options (0);  
422                log_debug("check PTD and GPGME version");
423          rc = check_crypto_engine ();      get_file_version ("winpt.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
424          if (rc) {      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1], &ptdver[2], &ptdver[3]);
425              DestroyWindow (hwnd);      if (!ec && (ptdver[0] != ver[0] || ptdver[1] != ver[1] || ptdver[2] != ver[2])) {
426              free_gnupg_table ();          log_box (_("WinPT Error"), MB_ERR,
427              return 0;                   _("The PTD.dll file has a different version than WinPT.exe\n"
428          }                     "Please update the PTD.dll to version %d.%d.%d"),
429      }                     ver[0], ver[1], ver[2]);
430            return 0;
431      if (start_gpgprefs)      }
432      {  
433          char *ring;      s = gpgme_check_version (NEED_GPGME_VERSION);
434          size_t size = 0;      if (!s || !*s) {
435          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          msg_box (GetDesktopWindow (),
436                          gpgprefs_dlg_proc, NULL);                   _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
437          ring = get_gnupg_keyring (0, !NO_STRICT);                   _("WinPT Error"), MB_ERR);
438          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)          return 0;
439              first_start = 1; /* The keyring is empty! */      }
440          free_if_alloc (ring);  
441      }      CreateMutex (NULL, TRUE, PGM_NAME);
442        if (GetLastError () == ERROR_ALREADY_EXISTS)
443      if (first_start) {          winpt_inst_found = 1;
444          struct key_wizard_s c, dummy;      
445  start:      gettext_set_user_domain ();
446          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,  
447                          first_run_dlg_proc, (LPARAM)&dummy);      regist_inst_gnupg (1);
448          switch (dummy.interactive)      regist_inst_winpt (1, &created);
449          {  
450          case SETUP_KEYGEN:      if (!created) {
451              c.interactive = 1;          memset (&reg_prefs, 0, sizeof (reg_prefs));
452              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,          get_reg_winpt_prefs (&reg_prefs);
453                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);          reg_prefs.fm.progress = 0; /* TODO: fix the bug and enable it again */
454              if (!rc)          if (gnupg_load_config () == -2)
455                  goto start;              msg_box (GetDesktopWindow (),
456              break;                       _("The gpg.conf file contains the 'textmode' option\n"
457                           "which leads to broken binary output during decryption.\n"
458          case SETUP_IMPORT:                         "If this is on purpose, just continue otherwise the option should be disabled."),
459              rc = gnupg_copy_keyrings ();                       _("WinPT Error"), MB_ERR);
460              if (rc) {      }
461                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
462                  goto start;      if (is_gpg4win_installed ()) {
463              }          log_debug("gpg4win: load gpg environment");
464              break;          load_gpg_env (); /* TODO: check return code. */
465        }
466          case SETUP_EXISTING:  
467              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      rc = gnupg_check_homedir ();
468                              gpgprefs_dlg_proc, NULL);      if (rc) {  
469              break;          log_box (_("WinPT Error"), MB_ERR,
470                     _("GPG home directory is not set correctly.\n"
471          case -1:                     "Please check the GPG registry settings:\n%s."),
472              DestroyWindow (hwnd);                   winpt_strerror (rc));
473              free_gnupg_table ();          s = get_fileopen_dlg (GetActiveWindow (),
474              return 0;                                _("Select GPG Public Keyring"),
475          }                                "GPG Keyrings (*.gpg)\0*.gpg\0\0",
476          update_keycache (hwnd);                                NULL);
477          check_crypto_engine ();          
478      }          char * p;
479      else {          if (s != NULL && (p = strrchr (s, '\\'))) {
480          gpgme_keycache_t c;              char *path = substr (s, 0, (p-s));
481          update_keycache (hwnd);  
482          c = keycache_get_ctx (1);              set_reg_entry_gpg ("HomeDir", path);
483          if (!c || !gpgme_keycache_count (c)) {              free_if_alloc (path);
484              gnupg_display_error ();          }
485              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"          else {
486                               "Please check your GPG config (keyrings, pathes...)"),              msg_box (GetDesktopWindow (),
487                               _("WinPT Error"), MB_ERR);                       _("GPG home directory could not be determined."),
488              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"                       _("WinPT Error"), MB_ERR);
489                                    "Do you want to start the GPG preferences dialog?"),              goto start;
490                              "WinPT", MB_INFO|MB_YESNO);          }
491              if (ec == IDYES) {      }
492                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  
493                                  gpgprefs_dlg_proc, NULL);      rc = check_gnupg_prog ();
494                  update_keycache (hwnd);      if (rc) {
495              }          if (msg_box (GetDesktopWindow (),
496              else {                       _("Could not find the GPG binary (gpg.exe).\n"
497                  DestroyWindow (hwnd);                         "Do you want to start the GPG preferences to "
498                  free_gnupg_table ();                         "correct  this problem?"), _("WinPT Error"),
499                  return 0;                       MB_INFO|MB_YESNO) == IDYES)
500              }              start_gpgprefs = 1;
501          }          else {
502          if (check_default_key (c)) {              msg_box (GetDesktopWindow (),
503              char * p = get_gnupg_default_key ();                       winpt_strerror (rc), _("WinPT Error"), MB_ERR);
504              log_box (_("WinPT Error"), MB_ERR,              return 0;
505                       _("Default key from the GPG options file could not be found.\n"          }
506                         "Please check your gpg.conf (options) to correct this:\n\n"      }
507                         "%s: public key not found."), p? p : "[null]");  
508              free_if_alloc (p);      rc = gnupg_access_files ();
509              DestroyWindow (hwnd);      if (!start_gpgprefs && rc) {
510              free_gnupg_table ();          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
511              return 0;              ec = msg_box (GetDesktopWindow (),
512          }                  _("Could not access and/or find the public and secret keyring.\n"
513          if (count_insecure_elgkeys ())                    "If this is an accident, quit the program and fix it.\n\n"
514              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,                    "Continue if you want WinPT to offer you more choices.\n"),
515                              elgamal_warn_dlg_proc, NULL);                    "WinPT", MB_INFO|MB_YESNO);
516      }              if (ec == IDYES)
517                    first_start = 1;
518      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);          }
519      keyring_check_last_access (); /* init */          if (!first_start) {
520      while (GetMessage (&msg, hwnd, 0, 0)) {              msg_box (GetDesktopWindow (), winpt_strerror (rc), _("WinPT Error"), MB_ERR);
521          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {              return 0;
522              TranslateMessage (&msg);          }
523              DispatchMessage (&msg);      }
524          }      if (check_for_empty_keyrings (false))
525      }          first_start = 1;
526            
527      return 0;      if (!first_start) {
528  } /* WinMain */          rc = gpg_check_permissions (1);
529            if (rc && rc == 2) /* 2 means read-only mode. */
530                gpg_read_only = 1;
531            else if (rc)
532                return 0;
533        }
534        
535        init_gnupg_table ();
536    
537        if (fm_parse_command_line (cmdline) > 0) {
538            free_gnupg_table ();
539            return 0;
540        }
541    
542        rc = kserver_load_conf ();
543        if (rc)
544            msg_box (GetDesktopWindow (), winpt_strerror (rc),
545                     _("Keyserver"), MB_ERR);
546    
547        if (cmdline && (stristr (cmdline, "--keymanager")
548                    || stristr (cmdline, "--cardmanager"))) {
549            /* If an instance of WinPT is running, just send the command
550               to open the key manager. Otherwise start a new instance. */
551            HWND tray = FindWindow ("WinPT", "WinPT");
552            if (stristr (cmdline, "keymanager"))
553                start_manager = ID_WINPT_KEY;
554            else
555                start_manager = ID_WINPT_CARD;
556            if (tray != NULL) {
557                PostMessage (tray, WM_COMMAND, start_manager, 0);
558                free_gnupg_table ();
559                return 0;
560            }
561        }
562    
563        /* If we found another WinPT instance, just quit to avoid it
564           will be executed twice. */
565        if (winpt_inst_found) {
566            log_debug ("%s", "WinMain: WinPT is already running.");
567            free_gnupg_table ();
568            return 0;
569        }
570    
571        if (cmdline && (stristr (cmdline, "--enable-debug") ||
572                        stristr (cmdline, "--debug"))) {
573            gpg_set_debug_mode (1);
574            winpt_debug_msg ();
575            debug = 1;
576        }
577    
578        wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));
579        rc = RegisterClass (&wc);
580        if (rc == FALSE) {
581            msg_box (GetDesktopWindow (), _("Could not register window class"),
582                     _("WinPT Error"), MB_ERR);
583            free_gnupg_table ();
584            return 0;
585        }
586    
587        hwnd = CreateWindow (PGM_NAME,
588                             PGM_NAME,
589                             0, 0, 0, 0, 0,
590                             NULL,
591                             NULL,
592                             hinst,
593                             NULL);
594        if (hwnd == NULL) {
595            msg_box (GetDesktopWindow (),
596                     _("Could not create window"),
597                     _("WinPT Error"), MB_ERR);
598            free_gnupg_table ();
599            return 0;
600        }
601        glob_hwnd = hwnd;
602        UpdateWindow (hwnd);
603    
604        if (!first_start && !start_gpgprefs) {
605            log_debug("backup gpg config file and check back-end");
606            gnupg_backup_options ();        
607            if (!check_crypto_engine ()) {
608                DestroyWindow (hwnd);
609                free_gnupg_table ();
610                return 0;
611            }
612        }
613        
614        if (start_gpgprefs) {
615            DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
616                            gpgprefs_dlg_proc, 0);
617            if (check_for_empty_keyrings (true))
618                first_start = 1; /* The public keyring is empty. */
619        }
620    
621        if (first_start) {
622            struct genkey_s c;
623            int choice;
624            HWND h;
625    start:
626            h = GetDesktopWindow ();
627            if (!gpg_prefs_ok ())
628                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,
629                                gpgprefs_dlg_proc, 0);
630            choice = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,
631                                     first_run_dlg_proc, 0);
632            switch (choice) {
633            case SETUP_KEYGEN:
634                c.interactive = 1;
635                c.first_start = 1;
636                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,
637                                     h, keygen_wizard_dlg_proc, (LPARAM)&c);
638                if (!rc)
639                    goto start;
640                break;
641    
642            case SETUP_IMPORT:
643                rc = gnupg_copy_keyrings ();
644                if (rc) {
645                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
646                    goto start;
647                }
648                break;
649    
650            case SETUP_EXISTING:
651                rc = gnupg_import_keypair ();
652                if (rc) {
653                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
654                    goto start;
655                }
656                break;
657    
658            case SETUP_CARDGEN:
659                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_CARD_KEYGEN,
660                                     h, card_keygen_dlg_proc, 0);
661                if (!rc)
662                    goto start;
663                break;
664    
665            case 0: /* Cancel/Abort. */
666            default:
667                DestroyWindow (hwnd);
668                free_gnupg_table ();
669                return 0;
670            }
671            update_keycache (hwnd);
672            if (!check_crypto_engine ()) {
673                DestroyWindow (hwnd);
674                free_gnupg_table ();
675                keycache_release (1);
676                return 0;
677            }
678        }
679        else {
680            gpg_keycache_t c;
681            if (update_keycache (hwnd)) {
682                DestroyWindow (hwnd);
683                free_gnupg_table ();
684                keycache_release (1);
685                return 0;
686            }
687            /* XXX: rewrite this part. */
688            c = keycache_get_ctx (1);
689            if (!gpg_keycache_get_size (c)) {
690                msg_box (hwnd, _("The keycache was not initialized or is empty.\n"
691                                 "Please check your GPG config (keyrings, pathes...)"),
692                                 _("WinPT Error"), MB_ERR);
693                ec = msg_box (GetDesktopWindow (),
694                              _("It seems that GPG is not configured properly.\n"
695                                "Do you want to start the GPG preferences dialog?"),
696                              "WinPT", MB_INFO|MB_YESNO);
697                if (ec == IDYES) {
698                    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
699                                    gpgprefs_dlg_proc, 0);
700                    update_keycache (hwnd);
701                }
702                else {
703                    DestroyWindow (hwnd);
704                    free_gnupg_table ();
705                    keycache_release (1);
706                    return 0;
707                }
708            }      
709            if (check_default_key ()) {
710                char *p = get_gnupg_default_key ();
711                log_box (_("WinPT Error"), MB_ERR,
712                         _("Default key (from the GPG config file) could not be found or is unuseable.\n"
713                           "The default key will be resetted and can be set later in the Key Manager again.\n\n"
714                           "%s: secret key not found."), p? p : "?");
715                set_gnupg_default_key (NULL);
716                free_if_alloc (p);
717            }
718            if (count_insecure_elgkeys ())
719                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,
720                                elgamal_warn_dlg_proc, 0);
721        }
722      
723        if (start_manager)
724            PostMessage (hwnd, WM_COMMAND, start_manager, 0);
725    
726        accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);
727        keyring_check_last_access (); /* init */
728        while (GetMessage (&msg, hwnd, 0, 0)) {
729            if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {
730                TranslateMessage (&msg);
731                DispatchMessage (&msg);
732            }
733        }
734        
735        return 0;
736    }
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