/[winpt]/trunk/Src/WinPT.cpp
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revision 16 by twoaday, Mon May 9 08:54:21 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>  #include <windows.h>
21    #include <shlobj.h>
22  #include "../resource.h"  
23  #include "wptTypes.h"  #include "resource.h"
24  #include "wptW32API.h"  #include "wptTypes.h"
25  #include "wptVersion.h"  #include "wptW32API.h"
26  #include "wptErrors.h"  #include "wptVersion.h"
27  #include "wptGPG.h"  #include "wptErrors.h"
28  #include "wptRegistry.h"  #include "wptGPG.h"
29  #include "wptCommonCtl.h"  #include "wptRegistry.h"
30  #include "wptDlgs.h"  #include "wptCommonCtl.h"
31  #include "wptNLS.h"  #include "wptDlgs.h"
32  #include "wptKeyserver.h"  #include "wptNLS.h"
33  #include "wptCard.h"  #include "wptKeyserver.h"
34  #include "wptFileManager.h"  #include "wptCard.h"
35  #include "wptContext.h"  #include "wptFileManager.h"
36    #include "wptContext.h"
37  HINSTANCE glob_hinst; /* global instance for the dialogs */  #include "wptCardEdit.h"
38  HWND glob_hwnd; /* global window handle for the dialogs */  #include "wptCrypto.h"
39  HWND activ_hwnd;  #include "wptUTF8.h"
40  LOCK mo_file;  
41  int scard_support = 0;  void remove_crit_file_attrs (const char *fname, int force);
42  int debug = 0;  
43  int mobile = 0;  /* Global variables. */
44  int gpg_read_only = 0;  HINSTANCE glob_hinst;   /* global instance for the dialogs */
45  char gpgver[3];  HWND glob_hwnd;         /* global window handle for the dialogs */
46    int scard_support = 0;
47  /* Internal IPC */  int debug = 0;
48  int start_keymanager = 0;  int gpg_read_only = 0;
49    char gpgver[3];
50  static void  /* End */
51  update_keycache (HWND hwnd)  
52  {  
53      refresh_cache_s rcs = {0};  /* Retrieve the product verion of the given file @fname.
54      rcs.kr_reload = 0;     Format: MAJOR.MINOR.PATCH1.PATCH2
55      rcs.kr_update = 1;     Return value: 0 on success. */
56      rcs.tr_update = 1;  int
57      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  get_file_version (const char *fname, WORD *major, WORD *minor, WORD *patch1, WORD *patch2)
58                      keycache_dlg_proc, (LPARAM)&rcs);  {
59  } /* update_keycache */      VS_FIXEDFILEINFO *inf;
60        char file[MAX_PATH+1] = {0};
61        LPVOID buf, data;
62  static char *      DWORD size;
63  get_gettext_lang (void)      UINT qlen;
64  {          int err = 0;
65      char * fname;  
66      fname = get_reg_entry_mo ();      strncpy (file, fname, MAX_PATH);
67      if (!fname)      size = GetFileVersionInfoSize (file, NULL);
68          return NULL;      if (!size)
69      return fname;          return -1;
70  } /* get_gettext_lang */      
71        buf = (LPVOID)new char[size];
72        if (!buf)
73  static void          BUG (NULL);
74  load_gettext (void)      if (!GetFileVersionInfo (file, 0, size, buf)) {
75  {          err = -1;
76      char * nls = NULL;          goto fail;
77      char * file = NULL;      }
78    
79      nls = get_gettext_lang ();      qlen = 0;
80      if (nls) {      VerQueryValue (buf, (char*)"\\", &data, &qlen);
81          set_gettext_file ("winpt", nls);      if (!qlen) {
82          file = make_filename (nls, "winpt", "mo");          err = -1;
83          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {          goto fail;
84              msg_box (NULL, _("Could not initizalize file lock.\n"      }
85                               "Native Language Support"),      
86                       _("WinPT Error"), MB_ERR);      inf = (VS_FIXEDFILEINFO*)data;
87          }      *major = HIWORD (inf->dwProductVersionMS);
88          free_if_alloc (nls);      *minor = LOWORD (inf->dwProductVersionMS);
89          free_if_alloc (file);      *patch1 = HIWORD (inf->dwProductVersionLS);
90      }      *patch2 = LOWORD (inf->dwProductVersionLS);
91  } /* load_gettext */  
92    fail:
93        delete [](char*)buf;
94  /* check if the default key from the gpg.conf file is available in the      return err;
95     keyring. if not, bail out because encryption won't work properly then. */  }
96  static int  
97  check_default_key (gpgme_keycache_t kc)  
98  {  /* Load the key cache and rebuild the signature cache. */
99      gpgme_key_t key;  int
100      gpgme_error_t err = GPGME_No_Error;  update_keycache (HWND hwnd)
101      char * defkey;  {
102        refresh_cache_s rcs;
103      defkey = get_gnupg_default_key ();  
104      if (defkey)      /* no need to rebuild the sig cache each time. */
105          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      memset (&rcs, 0, sizeof (rcs));
106      free_if_alloc (defkey);      rcs.kring_update = 1;
107      return err? -1 : 0;      int err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
108  } /* check_default_key */                      keycache_dlg_proc, (LPARAM)&rcs);
109        if (err) {
110            char *cfgf = get_gnupg_config ();
111  /* Return the WinPT program file name (with full pathname). */          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
112  static const char *              msg_box (GetDesktopWindow (),
113  get_prog_part (const char * fname, int use_cwd)                       _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
114  {          free_if_alloc (cfgf);
115      static char program[1024];          return -1;
116      char currdir[256], * cmd = NULL;      }
117      int j;      return 0;
118            }
119      memset (currdir, 0, DIM (currdir));  
120      memset (program, 0, DIM (program));  
121            /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
122      if (use_cwd) {  void
123          GetCurrentDirectory (DIM (currdir)-1, currdir);  gpg_set_debug_mode (int val)
124          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);  {
125      }      static char buf[MAX_PATH+1];
126      else {      
127          cmd = GetCommandLine ();      /* XXX: no gpgme.dbg is created. */
128          if (cmd == NULL)      if (val > 0) {
129              return NULL;          char tmp[128];
130          strncpy (currdir, cmd, 255);          GetTempPath (DIM (tmp)-1, tmp);
131          j = strlen (currdir);          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
132          while (j--) {          putenv (buf);
133              if (currdir[j] == '\\')      }
134                  break;                else
135          }          putenv ("GPGME_DEBUG=");
136          currdir[j] = 0;  }
137          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);  
138      }  
139      return program;  /* Return true if the GPG environment is useable. */
140  } /* get_prog_part */  static bool
141    gpg_prefs_ok (void)
142    {
143  static int      char *p = get_reg_entry_gpg4win ("gpg.exe");
144  check_crypto_engine (void)      if (!p || file_exist_check (p) != 0) {
145  {          free_if_alloc (p);
146      int ma=1, mi=2, pa=4; /* GPG 1.2.4 */          p = get_reg_entry_gpg ("gpgProgram");
147      int rc;          if (!p || file_exist_check (p) != 0) {
148                free_if_alloc (p);
149      rc = check_gnupg_engine (&ma, &mi, &pa);              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
150      if (rc == -1) {              return false;
151          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);          }
152          return rc;      }
153      }      free_if_alloc (p);
154      else if (rc) {      p = get_reg_entry_gpg4win (NULL);
155          log_box (_("WinPT Error"), MB_ERR,      if (!p || dir_exist_check (p) != 0) {
156                   _("Sorry, you need a newer GPG version.\n"          free_if_alloc (p);
157                     "GPG version %d.%d.%d requred GPG version 1.2.4"),          p = get_reg_entry_gpg ("HomeDir");
158                     ma, mi, pa);          if (!p || dir_exist_check (p) != 0) {
159          return rc;              free_if_alloc (p);
160      }              log_debug ("gpg_prefs_ok: could not determine home directory");
161      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */              return false;
162      if (ma >= 1 && mi >= 4)          }
163          scard_support = 1;      }
164        free_if_alloc (p);
165      gpgver[0] = ma;      return true;
166      gpgver[1] = mi;  }
167      gpgver[2] = pa;  
168      return rc;  
169  } /* check_crypto_engine */  /* Check gpg files if they are read-only and ask the user
170       if this should be corrected. */
171    static void
172  static int  check_readonly_attr (const char *homedir)
173  load_keyserver_conf (int quiet)  {
174  {      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
175      const char * t;      
176      int rc;      log_debug("check if there are gpg files with a read-only attribute");
177        for (int i=0; files[i] != NULL; i++) {
178      if (reg_prefs.kserv_conf)          char *file = make_filename (homedir, files[i], NULL);
179          t = reg_prefs.kserv_conf;          remove_crit_file_attrs (file, 0);
180      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))          free_if_alloc (file);
181          t = get_prog_part ("keyserver.conf", 0);      }
182      else  }
183          t = "keyserver.conf";  
184      rc = kserver_load_conf (t);  
185      if (rc && !quiet)  /* Load the GPG environment. On the first start, some
186          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);     checks are performed to find out in what state GPG is.
187      return rc;     Return value: 0  everything OK.
188  }                   >0  fatal error.
189                     -1 public keyring is empty or does not exist. */
190    static int
191  static void  load_gpg_env (void)
192  enable_mobile_mode (void)  {
193  {      SECURITY_ATTRIBUTES sec_attr;
194      memset (&reg_prefs, 0, sizeof (reg_prefs));      char *p;
195      reg_prefs.always_trust = 0;      char *pkr;
196      reg_prefs.auto_backup = 0;      int err = 0;
197      reg_prefs.cache_time = 0;  
198      reg_prefs.expert = 0;      p = get_reg_entry_gpg4win ("gpg.exe");
199      reg_prefs.keylist_mode = 1;      if (!p)
200      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");          return (1);
201      reg_prefs.no_zip_mmedia = 1;      if (file_exist_check (p)) {
202      reg_prefs.use_tmpfiles = 1;          free_if_alloc (p);
203      reg_prefs.word_wrap = 80;          return (1);
204      reg_prefs.use_viewer = 0; /* XXX */      }
205  }      free_if_alloc (p);
206    
207  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);      p = get_reg_entry_gpg ("HomeDir");
208        if (!p || dir_exist_check (p) != 0) {
209  int WINAPI          free_if_alloc (p);
210  #ifndef WINPT_IPC          p = multi_gnupg_path (0);
211  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)      }
212  #else      if (p && dir_exist_check (p)) {
213  win_main (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)          memset (&sec_attr, 0, sizeof (sec_attr));
214  #endif          sec_attr.nLength = sizeof (sec_attr);
215  {          if (!CreateDirectory (p, &sec_attr)) {
216      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};              msg_box (GetDesktopWindow (),
217      HACCEL accel_tab;                       _("Could not create GPG home directory"),
218      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;                       _("WinPT Error"), MB_ERR);
219      int first_start = 0, start_gpgprefs = 0;              free_if_alloc (p);
220      const char * s;              return (2);
221      MSG msg;          }
222      HWND hwnd;      }
223        check_readonly_attr (p);
224      glob_hinst = hinst;      pkr = make_filename (p, "pubring", "gpg");
225            free_if_alloc (p);
226      gpgme_lib_init ();      if (get_file_size (pkr) == 0)
227      #ifdef _DEBUG          err = -1;
228      gpgme_set_debug_mode (1);      free_if_alloc (pkr);
229      #endif      return err;
230      gpgme_set_pgm_string ("WinPT "PGM_VERSION);  }
231    
232      s = PTD_get_version ();  
233      if (strcmp (s, "0.8.0")) {  /* check if the default key from the gpg.conf file is available in the
234          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,     keyring. if not, bail out because encryption won't work properly then. */
235                   _("Please update your PTD.dll to the newest version, "  static int
236                     "the version (%s) you use is too old."), s);  check_default_key (void)
237          return 0;  {
238      }      gpgme_key_t key;
239        gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
240      if (gpg_md_selftest ()) {      gpg_keycache_t kc;
241          msg_box (NULL, _("Cryptographic selftest failed."),      char *defkey;
242                   _("WinPT Error"), MB_ERR);  
243          return 0;      kc = keycache_get_ctx (0);
244      }      defkey = get_gnupg_default_key ();
245        if (defkey != NULL) {
246      if (cmdline && stristr (cmdline, "--mobile")) {          err = gpg_keycache_find_key (kc, defkey, 0, &key);
247          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!", "WinPT", MB_INFO);          if (err) {
248          mobile = 1;              free_if_alloc (defkey);
249      }              return -1;
250            }
251      set_default_kserver ();      }
252        else {
253      if (!mobile) {          /* Actually this is just a warning but we still continue. */
254          regist_inst_gnupg (1);          msg_box (GetDesktopWindow (), _("No useable secret key found."),
255          regist_inst_winpt (1, &created);                   _("WinPT Warning"), MB_WARN);
256      }          return 0;
257      else {      }
258          enable_mobile_mode ();  
259          /* XXX: ask for GPG path */      /* Because the secret key listing has no information
260          created = 1; /* Disable registry writing */         about the validity/status, we need to check the public key. */
261      }      kc = keycache_get_ctx (1);
262        if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
263      if (!created) {          (key->revoked || key->expired)) {
264          memset (&reg_prefs, 0, sizeof (reg_prefs));          msg_box (GetDesktopWindow (), _("Default secret key is unuseable"),
265          reg_prefs.use_tmpfiles = 1; /* default */                   _("WinPT Warning"), MB_ERR);
266          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          free_if_alloc (defkey);
267          get_reg_winpt_prefs (&reg_prefs);          return -1;
268          if (!reg_prefs.no_hotkeys)      }
269              hotkeys_modify ();      free_if_alloc (defkey);
270      }      return 0;
271    }
272      rc = gnupg_check_homedir ();  
273      if (rc) {  
274          log_box (_("WinPT Error"), MB_ERR,  /* Check that the underlying crypto engine fullfills the minimal
275                   _("GPG home directory is not set correctly.\n"     requirements so all commands work properly. */
276                     "Please check the GPG registry settings:\n%s."),  static bool
277                   winpt_strerror (rc));  check_crypto_engine (void)
278          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,  {
279                                             _("Select GPG Public Keyring"),      int ma = 0, mi = 0, pa = 0;
280                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),      int rc;
281                                             NULL);  
282          if (s && !file_exist_check (s))      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
283          {      if (rc == -1) {
284              size_t n;          msg_box (GetDesktopWindow (), _("Could not read GnuPG version."),
285              char * p = strrchr (s, '\\');                   _("WinPT Error"), MB_ERR);
286              if (!p)          return false;
287                  BUG (0);      }
288              n = p - s;      else if (rc) {
289              if (n)          log_box (_("WinPT Error"), MB_ERR,
290              {                   _("A newer GPG version is needed.\n"
291                  char * file = new char[n+1];                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
292                  if (!file)                     ma, mi, pa);
293                      BUG (NULL);          return false;
294                  memset (file, 0, n);      }
295                  memcpy (file, s, n);      
296                  file[n] = '\0';              // TODO: smart card support needs to be revamped
297                  set_reg_entry_gpg ("HomeDir", file);      // and adjusted according to newer OpenPGP cards.
298                  free_if_alloc (file);      /*
299                  gnupg_check_homedir (); /* change gpgProgram if needed */      if ((ma > 1 || pa >= 4) && pcsc_available ())
300              }          scard_support = 1;
301          }      */
302          else {      scard_support = 0;
303              msg_box (NULL, _("GPG home directory could not be determited."),      
304                       _("WinPT Error"), MB_ERR);      gpgver[0] = ma;
305              goto start;      gpgver[1] = mi;
306          }      gpgver[2] = pa;
307      }      return true;
308    }
309      rc = check_gnupg_prog ();  
310      if (rc) {  
311          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  
312                               "Do you want to start the GPG preferences to "  /* Check if both keyrings are empty. This indicates that
313                               "correct  this problem?"), _("WinPT Error"),     WinPT should offer to generate a key pair. */
314                               MB_INFO|MB_YESNO) == IDYES)  static bool
315              start_gpgprefs = 1;  check_for_empty_keyrings (bool pub_only)
316          else  {
317          {      char *p;
318              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      int n;
319              return 0;  
320          }      n=0;
321      }      p = get_gnupg_keyring (1, 0);
322        if (file_exist_check (p) == 0 && get_file_size (p) == 0)
323      rc = gnupg_access_files ();          n++;
324      if (!start_gpgprefs && rc)      free_if_alloc (p);
325      {      if (pub_only)
326          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)          return n == 1? true : false;
327          {      p = get_gnupg_keyring (0, 0);
328              ec = msg_box (NULL,      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
329                  _("Could not access and/or find the public and secret keyring.\n"          n++;
330                    "If this is an accident, quit the program and fix it.\n\n"      free_if_alloc (p);
331                    "Continue if you want that WinPT offers you more choices.\n"),      return n==2? true : false;
332                    "WinPT", MB_INFO|MB_YESNO);  }
333              if (ec == IDYES)  
334                  first_start = 1;  
335          }  
336          if (!first_start)  /* Display info message that WinPT is now in debug mode. */
337          {  void
338              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  winpt_debug_msg (void)
339              return 0;  {      
340          }      char output[512];
341      }      char temp[MAX_PATH+1];
342            
343      if (!first_start)      GetTempPath (DIM (temp) - 1, temp);
344      {      _snprintf (output, DIM (output)-1,
345          rc = gpg_check_permissions (1);          "The GPGME output file is %sgpgme.dbg\n"
346          if (rc && rc == 2)          "The WinPT output file is %swinpt.log\n", temp, temp);
347              gpg_read_only = 1;      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
348          else if (rc)  }
349              return 0;  
350      }  
351    /* Search for insecure ElGamal keys and return the
352      load_gettext ();     number of founded keys. */
353      init_gnupg_table ();  static int
354    count_insecure_elgkeys (void)
355      nfiles = fm_parse_command_line (cmdline);  {
356      if (nfiles > 0)      gpg_keycache_t pc;
357          return 0;      gpgme_key_t key;
358    
359      if (cmdline && stristr (cmdline, "--wipe-freespace")) {      int n = 0;
360          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      pc = keycache_get_ctx (1);
361                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,      while (!gpg_keycache_next_key (pc, 0, &key)) {
362                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
363          free_gnupg_table ();              n++;
364          return 0;      }
365      }      gpg_keycache_rewind (pc);
366        return n;
367      load_keyserver_conf (cmdline? 1 : 0);  }
368      if (start_keymanager) {  
369          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,  
370                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  /* Return 1 if the current OS version is at least Windows XP */
371                              _("Key Manager"), IDS_WINPT_KEYMISC);  static int
372          keycache_release ();  check_os_version (void)
373          free_gnupg_table ();  {
374          return 0;      OSVERSIONINFOA osver;    
375      }      memset (&osver, 0, sizeof (osver));
376        osver.dwOSVersionInfoSize = sizeof (osver);
377      if (cmdline && (stristr (cmdline, "--keymanager")      
378                  || stristr (cmdline, "--cardmanager"))) {      log_debug("check OS version");
379          update_keycache (GetDesktopWindow ());      if (!GetVersionEx (&osver)) {
380          if (stristr (cmdline, "keymanager"))          MessageBox (NULL, _("Could not read the OS version."), _("WinPT Error"), MB_ERR);
381              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,          return 0;
382                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      }
383                              _("Key Manager"), IDS_WINPT_KEYMISC);    
384          else {      if (osver.dwMajorVersion < 5 ||
385              gpgme_card_t crd = smartcard_init ();          (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)) {
386              if (crd)          MessageBox (NULL, _("WinPT requires Windows XP or higher."), _("WinPT Error"), MB_ERR);
387                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,          return 0;
388                                    GetDesktopWindow(), card_edit_dlg_proc,      }
389                                    (LPARAM)crd, _("Card Manager"),      
390                                    IDS_WINPT_CARD_EDIT);      return 1;
391              gpgme_card_release (crd);  }
392          }      
393          keycache_release ();  /* Main entry point. */
394          free_gnupg_table ();  int WINAPI
395          return 0;  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
396      }  {
397        WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
398      CreateMutex (NULL, TRUE, PGM_NAME);      HACCEL accel_tab;
399      if (GetLastError () == ERROR_ALREADY_EXISTS) {      MSG msg;
400          free_gnupg_table ();      HWND hwnd = NULL;
401          return 0;      WORD ver[3], ptdver[4];
402      }      
403        const char *s;
404      if (cmdline) {      int rc, ec, created = 0;
405          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      int first_start = 0, start_gpgprefs = 0;
406              gpgme_set_debug_mode (1);      int winpt_inst_found = 0;
407              winpt_debug_msg ();      int start_manager = 0;    
408              debug = 1;  
409          }      if (!check_os_version ())
410      }          return 0;
411        
412      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      glob_hinst = hinst;
413      rc = RegisterClass (&wc);      
414      if (rc == FALSE) {      /* Allow to shutdown the process, for instance by an installer */
415          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);      if (cmdline && stristr (cmdline, "--stop")) {
416          free_gnupg_table ();          hwnd = FindWindow ("WinPT", "WinPT");
417          return 0;          if (hwnd != NULL)
418      }              PostMessage (hwnd, WM_DESTROY, 0, 0);
419            return 0;
420      hwnd = CreateWindow (PGM_NAME,      }    
421                           PGM_NAME,  
422                           0, 0, 0, 0, 0,      log_debug("check PTD and GPGME version");
423                           NULL,      get_file_version ("winpt.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
424                           NULL,      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1], &ptdver[2], &ptdver[3]);
425                           hinst,      if (!ec && (ptdver[0] != ver[0] || ptdver[1] != ver[1] || ptdver[2] != ver[2])) {
426                           NULL);          log_box (_("WinPT Error"), MB_ERR,
427      if (hwnd == NULL) {                   _("The PTD.dll file has a different version than WinPT.exe\n"
428          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);                     "Please update the PTD.dll to version %d.%d.%d"),
429          free_gnupg_table ();                     ver[0], ver[1], ver[2]);
430          return 0;          return 0;
431      }      }
432      glob_hwnd = hwnd;  
433      UpdateWindow (hwnd);      s = gpgme_check_version (NEED_GPGME_VERSION);
434        if (!s || !*s) {
435      if (!first_start && !start_gpgprefs) {          msg_box (GetDesktopWindow (),
436          gnupg_backup_options (1);                   _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
437          gnupg_backup_options (0);                   _("WinPT Error"), MB_ERR);
438                    return 0;
439          rc = check_crypto_engine ();      }
440          if (rc) {  
441              DestroyWindow (hwnd);      CreateMutex (NULL, TRUE, PGM_NAME);
442              free_gnupg_table ();      if (GetLastError () == ERROR_ALREADY_EXISTS)
443              return 0;          winpt_inst_found = 1;
444          }      
445      }      gettext_set_user_domain ();
446    
447      if (start_gpgprefs)      regist_inst_gnupg (1);
448      {      regist_inst_winpt (1, &created);
449          char *ring;  
450          size_t size = 0;      if (!created) {
451          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          memset (&reg_prefs, 0, sizeof (reg_prefs));
452                          gpgprefs_dlg_proc, NULL);          get_reg_winpt_prefs (&reg_prefs);
453          ring = get_gnupg_keyring (0, !NO_STRICT);          reg_prefs.fm.progress = 0; /* TODO: fix the bug and enable it again */
454          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)          if (gnupg_load_config () == -2)
455              first_start = 1; /* The keyring is empty! */              msg_box (GetDesktopWindow (),
456          free_if_alloc (ring);                       _("The gpg.conf file contains the 'textmode' option\n"
457      }                         "which leads to broken binary output during decryption.\n"
458                           "If this is on purpose, just continue otherwise the option should be disabled."),
459      if (first_start) {                       _("WinPT Error"), MB_ERR);
460          struct key_wizard_s c, dummy;      }
461  start:  
462          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,      if (is_gpg4win_installed ()) {
463                          first_run_dlg_proc, (LPARAM)&dummy);          log_debug("gpg4win: load gpg environment");
464          switch (dummy.interactive)          load_gpg_env (); /* TODO: check return code. */
465          {      }
466          case SETUP_KEYGEN:  
467              c.interactive = 1;      rc = gnupg_check_homedir ();
468              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,      if (rc) {  
469                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);          log_box (_("WinPT Error"), MB_ERR,
470              if (!rc)                   _("GPG home directory is not set correctly.\n"
471                  goto start;                     "Please check the GPG registry settings:\n%s."),
472              break;                   winpt_strerror (rc));
473            s = get_fileopen_dlg (GetActiveWindow (),
474          case SETUP_IMPORT:                                _("Select GPG Public Keyring"),
475              rc = gnupg_copy_keyrings ();                                "GPG Keyrings (*.gpg)\0*.gpg\0\0",
476              if (rc) {                                NULL);
477                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);          
478                  goto start;          char * p;
479              }          if (s != NULL && (p = strrchr (s, '\\'))) {
480              break;              char *path = substr (s, 0, (p-s));
481    
482          case SETUP_EXISTING:              set_reg_entry_gpg ("HomeDir", path);
483              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,              free_if_alloc (path);
484                              gpgprefs_dlg_proc, NULL);          }
485              break;          else {
486                msg_box (GetDesktopWindow (),
487          case -1:                       _("GPG home directory could not be determined."),
488              DestroyWindow (hwnd);                       _("WinPT Error"), MB_ERR);
489              free_gnupg_table ();              goto start;
490              return 0;          }
491          }      }
492          update_keycache (hwnd);  
493          check_crypto_engine ();      rc = check_gnupg_prog ();
494      }      if (rc) {
495      else {          if (msg_box (GetDesktopWindow (),
496          gpgme_keycache_t c;                       _("Could not find the GPG binary (gpg.exe).\n"
497          update_keycache (hwnd);                         "Do you want to start the GPG preferences to "
498          c = keycache_get_ctx (1);                         "correct  this problem?"), _("WinPT Error"),
499          if (!c || !gpgme_keycache_count (c)) {                       MB_INFO|MB_YESNO) == IDYES)
500              gnupg_display_error ();              start_gpgprefs = 1;
501              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"          else {
502                               "Please check your GPG config (keyrings, pathes...)"),              msg_box (GetDesktopWindow (),
503                               _("WinPT Error"), MB_ERR);                       winpt_strerror (rc), _("WinPT Error"), MB_ERR);
504              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"              return 0;
505                                    "Do you want to start the GPG preferences dialog?"),          }
506                              "WinPT", MB_INFO|MB_YESNO);      }
507              if (ec == IDYES) {  
508                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      rc = gnupg_access_files ();
509                                  gpgprefs_dlg_proc, NULL);      if (!start_gpgprefs && rc) {
510                  update_keycache (hwnd);          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
511              }              ec = msg_box (GetDesktopWindow (),
512              else {                  _("Could not access and/or find the public and secret keyring.\n"
513                  DestroyWindow (hwnd);                    "If this is an accident, quit the program and fix it.\n\n"
514                  free_gnupg_table ();                    "Continue if you want WinPT to offer you more choices.\n"),
515                  return 0;                    "WinPT", MB_INFO|MB_YESNO);
516              }              if (ec == IDYES)
517          }                  first_start = 1;
518          if (check_default_key (c)) {          }
519              char * p = get_gnupg_default_key ();          if (!first_start) {
520              log_box (_("WinPT Error"), MB_ERR,              msg_box (GetDesktopWindow (), winpt_strerror (rc), _("WinPT Error"), MB_ERR);
521                       _("Default key from the GPG options file could not be found.\n"              return 0;
522                         "Please check your gpg.conf (options) to correct this:\n\n"          }
523                         "%s: public key not found."), p? p : "[null]");      }
524              free_if_alloc (p);      if (check_for_empty_keyrings (false))
525              DestroyWindow (hwnd);          first_start = 1;
526              free_gnupg_table ();  
527              return 0;      if (!first_start) {
528          }          rc = gpg_check_permissions (1);
529          if (count_insecure_elgkeys ())          if (rc && rc == 2) /* 2 means read-only mode. */
530              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,              gpg_read_only = 1;
531                              elgamal_warn_dlg_proc, NULL);          else if (rc)
532      }              return 0;
533        }
534      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      
535      keyring_check_last_access (); /* init */      init_gnupg_table ();
536      while (GetMessage (&msg, hwnd, 0, 0)) {  
537          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      if (fm_parse_command_line (cmdline) > 0) {
538              TranslateMessage (&msg);          free_gnupg_table ();
539              DispatchMessage (&msg);          return 0;
540          }      }
541      }  
542                rc = kserver_load_conf ();
543      return 0;      if (rc)
544  } /* WinMain */          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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