/[winpt]/trunk/Src/WinPT.cpp
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revision 25 by twoaday, Wed Oct 12 10:04:26 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 "wptCardEdit.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  static void  int gpg_read_only = 0;
49  update_keycache (HWND hwnd)  char gpgver[3];
50  {  /* End */
51      refresh_cache_s rcs = {0};  
52      rcs.kr_reload = 0;  
53      rcs.kr_update = 1;  /* Retrieve the product verion of the given file @fname.
54      rcs.tr_update = 1;     Format: MAJOR.MINOR.PATCH1.PATCH2
55      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,     Return value: 0 on success. */
56                      keycache_dlg_proc, (LPARAM)&rcs);  int
57  } /* update_keycache */  get_file_version (const char *fname, WORD *major, WORD *minor, WORD *patch1, WORD *patch2)
58    {
59        VS_FIXEDFILEINFO *inf;
60  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */      char file[MAX_PATH+1] = {0};
61  void      LPVOID buf, data;
62  gpg_set_debug_mode (int val)      DWORD size;
63  {            UINT qlen;
64      if (val)      int err = 0;
65          putenv ("GPGME_DEBUG=5:gpgme.dbg");  
66      else      strncpy (file, fname, MAX_PATH);
67          putenv ("GPGME_DEBUG=");      size = GetFileVersionInfoSize (file, NULL);
68  }      if (!size)
69            return -1;
70  static char *      
71  get_gettext_lang (void)      buf = (LPVOID)new char[size];
72  {          if (!buf)
73      char * fname;          BUG (NULL);
74      fname = get_reg_entry_mo ();      if (!GetFileVersionInfo (file, 0, size, buf)) {
75      if (!fname)          err = -1;
76          return NULL;          goto fail;
77      return fname;      }
78  } /* get_gettext_lang */  
79        qlen = 0;
80        VerQueryValue (buf, (char*)"\\", &data, &qlen);
81  static void      if (!qlen) {
82  load_gettext (void)          err = -1;
83  {          goto fail;
84      char *nls = NULL;      }
85      char *file = NULL;      
86        inf = (VS_FIXEDFILEINFO*)data;
87      nls = get_gettext_lang ();      *major = HIWORD (inf->dwProductVersionMS);
88      if (nls) {      *minor = LOWORD (inf->dwProductVersionMS);
89          set_gettext_file ("winpt", nls);      *patch1 = HIWORD (inf->dwProductVersionLS);
90          file = make_filename (nls, "winpt", "mo");      *patch2 = LOWORD (inf->dwProductVersionLS);
91          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {  
92              msg_box (NULL, _("Could not initizalize file lock.\n"  fail:
93                               "Native Language Support"),      delete [](char*)buf;
94                       _("WinPT Error"), MB_ERR);      return err;
95          }  }
96          free_if_alloc (nls);  
97          free_if_alloc (file);  
98      }  /* Load the key cache and rebuild the signature cache. */
99  } /* load_gettext */  int
100    update_keycache (HWND hwnd)
101    {
102  /* check if the default key from the gpg.conf file is available in the      refresh_cache_s rcs;
103     keyring. if not, bail out because encryption won't work properly then. */  
104  static int      /* no need to rebuild the sig cache each time. */
105  check_default_key (gpg_keycache_t kc)      memset (&rcs, 0, sizeof (rcs));
106  {      rcs.kring_update = 1;
107      gpgme_key_t key;      int err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
108      gpgme_error_t err = GPG_ERR_NO_ERROR;                      keycache_dlg_proc, (LPARAM)&rcs);
109      char * defkey;      if (err) {
110            char *cfgf = get_gnupg_config ();
111      defkey = get_gnupg_default_key ();          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
112      if (defkey)              msg_box (GetDesktopWindow (),
113          err = gpg_keycache_find_key (kc, defkey, 0, &key);                       _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
114      free_if_alloc (defkey);          free_if_alloc (cfgf);
115      return err? -1 : 0;          return -1;
116  } /* check_default_key */      }
117        return 0;
118    }
119  /* Return the WinPT program file name (with full pathname). */  
120  static const char *  
121  get_prog_part (const char * fname, int use_cwd)  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
122  {  void
123      static char program[1024];  gpg_set_debug_mode (int val)
124      char currdir[256], * cmd = NULL;  {
125      int j;      static char buf[MAX_PATH+1];
126                
127      memset (currdir, 0, DIM (currdir));      /* XXX: no gpgme.dbg is created. */
128      memset (program, 0, DIM (program));      if (val > 0) {
129                    char tmp[128];
130      if (use_cwd) {          GetTempPath (DIM (tmp)-1, tmp);
131          GetCurrentDirectory (DIM (currdir)-1, currdir);          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
132          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);          putenv (buf);
133      }      }
134      else {      else
135          cmd = GetCommandLine ();          putenv ("GPGME_DEBUG=");
136          if (cmd == NULL)  }
137              return NULL;  
138          strncpy (currdir, cmd, 255);  
139          j = strlen (currdir);  /* Return true if the GPG environment is useable. */
140          while (j--) {  static bool
141              if (currdir[j] == '\\')  gpg_prefs_ok (void)
142                  break;            {
143          }      char *p = get_reg_entry_gpg4win ("gpg.exe");
144          currdir[j] = 0;      if (!p || file_exist_check (p) != 0) {
145          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);          free_if_alloc (p);
146      }          p = get_reg_entry_gpg ("gpgProgram");
147      return program;          if (!p || file_exist_check (p) != 0) {
148  } /* get_prog_part */              free_if_alloc (p);
149                log_debug ("gpg_prefs_ok: could not locate gpg.exe");
150                return false;
151  static int          }
152  check_crypto_engine (void)      }
153  {      free_if_alloc (p);
154      int ma=1, mi=4, pa=0; /* GPG 1.4.0 */      p = get_reg_entry_gpg4win (NULL);
155      int rc;      if (!p || dir_exist_check (p) != 0) {
156            free_if_alloc (p);
157      rc = check_gnupg_engine (&ma, &mi, &pa);          p = get_reg_entry_gpg ("HomeDir");
158      if (rc == -1) {          if (!p || dir_exist_check (p) != 0) {
159          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);              free_if_alloc (p);
160          return rc;              log_debug ("gpg_prefs_ok: could not determine home directory");
161      }              return false;
162      else if (rc) {          }
163          log_box (_("WinPT Error"), MB_ERR,      }
164                   _("Sorry, you need a newer GPG version.\n"      free_if_alloc (p);
165                     "GPG version %d.%d.%d required GPG version 1.4.0"),      return true;
166                     ma, mi, pa);  }
167          return rc;  
168      }  
169      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */  /* Check gpg files if they are read-only and ask the user
170      if (ma >= 1 && mi >= 4)     if this should be corrected. */
171          scard_support = 1;  static void
172    check_readonly_attr (const char *homedir)
173      gpgver[0] = ma;  {
174      gpgver[1] = mi;      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
175      gpgver[2] = pa;      
176      return rc;      log_debug("check if there are gpg files with a read-only attribute");
177  } /* check_crypto_engine */      for (int i=0; files[i] != NULL; i++) {
178            char *file = make_filename (homedir, files[i], NULL);
179            remove_crit_file_attrs (file, 0);
180  static int          free_if_alloc (file);
181  load_keyserver_conf (int quiet)      }
182  {  }
183      const char * t;  
184      int rc;  
185    /* Load the GPG environment. On the first start, some
186      if (reg_prefs.kserv_conf)     checks are performed to find out in what state GPG is.
187          t = reg_prefs.kserv_conf;     Return value: 0  everything OK.
188      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))                   >0  fatal error.
189          t = get_prog_part ("keyserver.conf", 0);                   -1 public keyring is empty or does not exist. */
190      else  static int
191          t = "keyserver.conf";  load_gpg_env (void)
192      rc = kserver_load_conf (t);  {
193      if (rc && !quiet)      SECURITY_ATTRIBUTES sec_attr;
194          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);      char *p;
195      return rc;      char *pkr;
196  }      int err = 0;
197    
198        p = get_reg_entry_gpg4win ("gpg.exe");
199  static void      if (!p)
200  enable_mobile_mode (void)          return (1);
201  {      if (file_exist_check (p)) {
202      memset (&reg_prefs, 0, sizeof (reg_prefs));          free_if_alloc (p);
203      reg_prefs.always_trust = 0;          return (1);
204      reg_prefs.auto_backup = 0;      }
205      reg_prefs.cache_time = 0;      free_if_alloc (p);
206      reg_prefs.expert = 0;  
207      reg_prefs.keylist_mode = 1;      p = get_reg_entry_gpg ("HomeDir");
208      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      if (!p || dir_exist_check (p) != 0) {
209      reg_prefs.no_zip_mmedia = 1;          free_if_alloc (p);
210      reg_prefs.use_tmpfiles = 1;          p = multi_gnupg_path (0);
211      reg_prefs.word_wrap = 80;      }
212      reg_prefs.use_viewer = 0; /* XXX */      if (p && dir_exist_check (p)) {
213  }          memset (&sec_attr, 0, sizeof (sec_attr));
214            sec_attr.nLength = sizeof (sec_attr);
215  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);          if (!CreateDirectory (p, &sec_attr)) {
216                msg_box (GetDesktopWindow (),
217  int WINAPI                       _("Could not create GPG home directory"),
218                         _("WinPT Error"), MB_ERR);
219  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)              free_if_alloc (p);
220  {              return (2);
221      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};          }
222      HACCEL accel_tab;      }
223      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;      check_readonly_attr (p);
224      int first_start = 0, start_gpgprefs = 0;      pkr = make_filename (p, "pubring", "gpg");
225      const char * s;      free_if_alloc (p);
226      MSG msg;      if (get_file_size (pkr) == 0)
227      HWND hwnd = NULL;          err = -1;
228        free_if_alloc (pkr);
229      glob_hinst = hinst;      return err;
230    }
231      #ifdef _DEBUG  
232      gpg_set_debug_mode (1);  
233      debug = 1;  /* check if the default key from the gpg.conf file is available in the
234      #endif     keyring. if not, bail out because encryption won't work properly then. */
235    static int
236      s = PTD_get_version ();  check_default_key (void)
237      if (strcmp (s, "0.8.0")) {  {
238          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,      gpgme_key_t key;
239                   _("Please update your PTD.dll to the newest version, "      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
240                     "the version (%s) you use is too old."), s);      gpg_keycache_t kc;
241          return 0;      char *defkey;
242      }  
243        kc = keycache_get_ctx (0);
244      if (gpg_md_selftest ()) {      defkey = get_gnupg_default_key ();
245          msg_box (NULL, _("Cryptographic selftest failed."),      if (defkey != NULL) {
246                   _("WinPT Error"), MB_ERR);          err = gpg_keycache_find_key (kc, defkey, 0, &key);
247          return 0;          if (err) {
248      }              free_if_alloc (defkey);
249                return -1;
250      s = gpgme_check_version ("1.1.0");          }
251      if (!s || !*s) {      }
252          msg_box (NULL, _("A newer GPGME version is needed."), "WinPT Error", MB_ERR);      else {
253          return 0;          /* 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 (cmdline && stristr (cmdline, "--mobile")) {          return 0;
257          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!",      }
258                   "WinPT", MB_INFO);  
259          mobile = 1;      /* Because the secret key listing has no information
260      }         about the validity/status, we need to check the public key. */
261        kc = keycache_get_ctx (1);
262      set_default_kserver ();      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
263            (key->revoked || key->expired)) {
264      if (!mobile) {          msg_box (GetDesktopWindow (), _("Default secret key is unuseable"),
265          regist_inst_gnupg (1);                   _("WinPT Warning"), MB_ERR);
266          regist_inst_winpt (1, &created);          free_if_alloc (defkey);
267      }          return -1;
268      else {      }
269          enable_mobile_mode ();      free_if_alloc (defkey);
270          /* XXX: ask for GPG path */      return 0;
271          created = 1; /* Disable registry writing */  }
272      }  
273    
274      if (!created) {  /* Check that the underlying crypto engine fullfills the minimal
275          memset (&reg_prefs, 0, sizeof (reg_prefs));     requirements so all commands work properly. */
276          reg_prefs.use_tmpfiles = 1; /* default */  static bool
277          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */  check_crypto_engine (void)
278          get_reg_winpt_prefs (&reg_prefs);  {
279          if (!reg_prefs.no_hotkeys)      int ma = 0, mi = 0, pa = 0;
280              hotkeys_modify ();      int rc;
281      }  
282        rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
283      rc = gnupg_check_homedir ();      if (rc == -1) {
284      if (rc) {          msg_box (GetDesktopWindow (), _("Could not read GnuPG version."),
285          log_box (_("WinPT Error"), MB_ERR,                   _("WinPT Error"), MB_ERR);
286                   _("GPG home directory is not set correctly.\n"          return false;
287                     "Please check the GPG registry settings:\n%s."),      }
288                   winpt_strerror (rc));      else if (rc) {
289          const char * s = get_fileopen_dlg (GetActiveWindow (),          log_box (_("WinPT Error"), MB_ERR,
290                                             _("Select GPG Public Keyring"),                   _("A newer GPG version is needed.\n"
291                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
292                                             NULL);                     ma, mi, pa);
293          if (s != NULL) {          return false;
294              size_t n;      }
295              char * p = strrchr (s, '\\');      
296              if (!p)      // TODO: smart card support needs to be revamped
297                  BUG (0);      // and adjusted according to newer OpenPGP cards.
298              n = p - s;      /*
299              if (n)      if ((ma > 1 || pa >= 4) && pcsc_available ())
300              {          scard_support = 1;
301                  char * file = new char[n+1];      */
302                  if (!file)      scard_support = 0;
303                      BUG (NULL);      
304                  memset (file, 0, n);      gpgver[0] = ma;
305                  memcpy (file, s, n);      gpgver[1] = mi;
306                  file[n] = '\0';              gpgver[2] = pa;
307                  set_reg_entry_gpg ("HomeDir", file);      return true;
308                  free_if_alloc (file);  }
309                  gnupg_check_homedir (); /* change gpgProgram if needed */  
310              }  
311          }  
312          else {  /* Check if both keyrings are empty. This indicates that
313              msg_box (NULL, _("GPG home directory could not be determited."),     WinPT should offer to generate a key pair. */
314                       _("WinPT Error"), MB_ERR);  static bool
315              goto start;  check_for_empty_keyrings (bool pub_only)
316          }  {
317      }      char *p;
318        int n;
319      rc = check_gnupg_prog ();  
320      if (rc) {      n=0;
321          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"      p = get_gnupg_keyring (1, 0);
322                               "Do you want to start the GPG preferences to "      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
323                               "correct  this problem?"), _("WinPT Error"),          n++;
324                               MB_INFO|MB_YESNO) == IDYES)      free_if_alloc (p);
325              start_gpgprefs = 1;      if (pub_only)
326          else          return n == 1? true : false;
327          {      p = get_gnupg_keyring (0, 0);
328              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
329              return 0;          n++;
330          }      free_if_alloc (p);
331      }      return n==2? true : false;
332    }
333      rc = gnupg_access_files ();  
334      if (!start_gpgprefs && rc)  
335      {  
336          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)  /* Display info message that WinPT is now in debug mode. */
337          {  void
338              ec = msg_box (NULL,  winpt_debug_msg (void)
339                  _("Could not access and/or find the public and secret keyring.\n"  {      
340                    "If this is an accident, quit the program and fix it.\n\n"      char output[512];
341                    "Continue if you want that WinPT offers you more choices.\n"),      char temp[MAX_PATH+1];
342                    "WinPT", MB_INFO|MB_YESNO);          
343              if (ec == IDYES)      GetTempPath (DIM (temp) - 1, temp);
344                  first_start = 1;      _snprintf (output, DIM (output)-1,
345          }          "The GPGME output file is %sgpgme.dbg\n"
346          if (!first_start)          "The WinPT output file is %swinpt.log\n", temp, temp);
347          {      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
348              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  }
349              return 0;  
350          }  
351      }  /* Search for insecure ElGamal keys and return the
352       number of founded keys. */
353      if (!first_start)  static int
354      {  count_insecure_elgkeys (void)
355          rc = gpg_check_permissions (1);  {
356          if (rc && rc == 2)      gpg_keycache_t pc;
357              gpg_read_only = 1;      gpgme_key_t key;
358          else if (rc)  
359              return 0;      int n = 0;
360      }      pc = keycache_get_ctx (1);
361        while (!gpg_keycache_next_key (pc, 0, &key)) {
362      load_gettext ();          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
363      init_gnupg_table ();              n++;
364        }
365      nfiles = fm_parse_command_line (cmdline);      gpg_keycache_rewind (pc);
366      if (nfiles > 0)      return n;
367          return 0;  }
368    
369      if (cmdline && stristr (cmdline, "--wipe-freespace")) {  
370          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,  /* Return 1 if the current OS version is at least Windows XP */
371                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,  static int
372                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);  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      load_keyserver_conf (cmdline? 1 : 0);      
378        log_debug("check OS version");
379      if (cmdline && (stristr (cmdline, "--keymanager")      if (!GetVersionEx (&osver)) {
380                  || stristr (cmdline, "--cardmanager"))) {          MessageBox (NULL, _("Could not read the OS version."), _("WinPT Error"), MB_ERR);
381          update_keycache (GetDesktopWindow ());          return 0;
382          if (stristr (cmdline, "keymanager"))      }
383              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,  
384                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      if (osver.dwMajorVersion < 5 ||
385                              _("Key Manager"), IDS_WINPT_KEYMISC);            (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)) {
386          else {          MessageBox (NULL, _("WinPT requires Windows XP or higher."), _("WinPT Error"), MB_ERR);
387              gpg_card_t crd = smartcard_init ();          return 0;
388              if (crd)      }
389                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      
390                                    GetDesktopWindow(), card_edit_dlg_proc,      return 1;
391                                    (LPARAM)crd, _("Card Manager"),  }
392                                    IDS_WINPT_CARD_EDIT);      
393              gpg_card_release (crd);  /* Main entry point. */
394          }  int WINAPI
395          keycache_release (0);  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
396          free_gnupg_table ();  {
397          return 0;      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
398      }      HACCEL accel_tab;
399        MSG msg;
400      CreateMutex (NULL, TRUE, PGM_NAME);      HWND hwnd = NULL;
401      if (GetLastError () == ERROR_ALREADY_EXISTS) {      WORD ver[3], ptdver[4];
402          free_gnupg_table ();      
403          return 0;      const char *s;
404      }      int rc, ec, created = 0;
405        int first_start = 0, start_gpgprefs = 0;
406      if (cmdline) {      int winpt_inst_found = 0;
407          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      int start_manager = 0;    
408              gpg_set_debug_mode (1);  
409              winpt_debug_msg ();      if (!check_os_version ())
410              debug = 1;          return 0;
411          }      
412      }      glob_hinst = hinst;
413        
414      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      /* Allow to shutdown the process, for instance by an installer */
415      rc = RegisterClass (&wc);      if (cmdline && stristr (cmdline, "--stop")) {
416      if (rc == FALSE) {          hwnd = FindWindow ("WinPT", "WinPT");
417          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);          if (hwnd != NULL)
418          free_gnupg_table ();              PostMessage (hwnd, WM_DESTROY, 0, 0);
419          return 0;          return 0;
420      }      }    
421    
422      hwnd = CreateWindow (PGM_NAME,      log_debug("check PTD and GPGME version");
423                           PGM_NAME,      get_file_version ("winpt.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
424                           0, 0, 0, 0, 0,      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1], &ptdver[2], &ptdver[3]);
425                           NULL,      if (!ec && (ptdver[0] != ver[0] || ptdver[1] != ver[1] || ptdver[2] != ver[2])) {
426                           NULL,          log_box (_("WinPT Error"), MB_ERR,
427                           hinst,                   _("The PTD.dll file has a different version than WinPT.exe\n"
428                           NULL);                     "Please update the PTD.dll to version %d.%d.%d"),
429      if (hwnd == NULL) {                     ver[0], ver[1], ver[2]);
430          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);          return 0;
431          free_gnupg_table ();      }
432          return 0;  
433      }      s = gpgme_check_version (NEED_GPGME_VERSION);
434      glob_hwnd = hwnd;      if (!s || !*s) {
435      UpdateWindow (hwnd);          msg_box (GetDesktopWindow (),
436                     _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
437      if (!first_start && !start_gpgprefs) {                   _("WinPT Error"), MB_ERR);
438          gnupg_backup_options ();                  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          char *ring;      regist_inst_winpt (1, &created);
449          size_t size = 0;  
450          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      if (!created) {
451                          gpgprefs_dlg_proc, NULL);          memset (&reg_prefs, 0, sizeof (reg_prefs));
452          ring = get_gnupg_keyring (0, !NO_STRICT);          get_reg_winpt_prefs (&reg_prefs);
453          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)          reg_prefs.fm.progress = 0; /* TODO: fix the bug and enable it again */
454              first_start = 1; /* The keyring is empty! */          if (gnupg_load_config () == -2)
455          free_if_alloc (ring);              msg_box (GetDesktopWindow (),
456      }                       _("The gpg.conf file contains the 'textmode' option\n"
457                           "which leads to broken binary output during decryption.\n"
458      if (first_start) {                         "If this is on purpose, just continue otherwise the option should be disabled."),
459          struct first_start_s fs;                       _("WinPT Error"), MB_ERR);
460          struct genkey_s c;      }
461          HWND h;  
462  start:      if (is_gpg4win_installed ()) {
463          h = GetDesktopWindow ();          log_debug("gpg4win: load gpg environment");
464          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,          load_gpg_env (); /* TODO: check return code. */
465                              gpgprefs_dlg_proc, NULL);      }
466          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,  
467                          first_run_dlg_proc, (LPARAM)&fs);      rc = gnupg_check_homedir ();
468          switch (fs.choice) {      if (rc) {  
469          case SETUP_KEYGEN:          log_box (_("WinPT Error"), MB_ERR,
470              c.interactive = 1;                   _("GPG home directory is not set correctly.\n"
471              c.first_start = 1;                     "Please check the GPG registry settings:\n%s."),
472              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,                   winpt_strerror (rc));
473                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);          s = get_fileopen_dlg (GetActiveWindow (),
474              if (!rc)                                _("Select GPG Public Keyring"),
475                  goto start;                                "GPG Keyrings (*.gpg)\0*.gpg\0\0",
476              break;                                NULL);
477            
478          case SETUP_IMPORT:          char * p;
479              rc = gnupg_copy_keyrings ();          if (s != NULL && (p = strrchr (s, '\\'))) {
480              if (rc) {              char *path = substr (s, 0, (p-s));
481                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
482                  goto start;              set_reg_entry_gpg ("HomeDir", path);
483              }              free_if_alloc (path);
484              break;          }
485            else {
486          case -1:              msg_box (GetDesktopWindow (),
487              DestroyWindow (hwnd);                       _("GPG home directory could not be determined."),
488              free_gnupg_table ();                       _("WinPT Error"), MB_ERR);
489              return 0;              goto start;
490          }          }
491          update_keycache (hwnd);      }
492          check_crypto_engine ();  
493      }      rc = check_gnupg_prog ();
494      else {      if (rc) {
495          gpg_keycache_t c;          if (msg_box (GetDesktopWindow (),
496          update_keycache (hwnd);                       _("Could not find the GPG binary (gpg.exe).\n"
497          c = keycache_get_ctx (1);                         "Do you want to start the GPG preferences to "
498          if (!c || !gpg_keycache_get_size (c)) {                         "correct  this problem?"), _("WinPT Error"),
499              gnupg_display_error ();                       MB_INFO|MB_YESNO) == IDYES)
500              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"              start_gpgprefs = 1;
501                               "Please check your GPG config (keyrings, pathes...)"),          else {
502                               _("WinPT Error"), MB_ERR);              msg_box (GetDesktopWindow (),
503              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"                       winpt_strerror (rc), _("WinPT Error"), MB_ERR);
504                                    "Do you want to start the GPG preferences dialog?"),              return 0;
505                              "WinPT", MB_INFO|MB_YESNO);          }
506              if (ec == IDYES) {      }
507                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  
508                                  gpgprefs_dlg_proc, NULL);      rc = gnupg_access_files ();
509                  update_keycache (hwnd);      if (!start_gpgprefs && rc) {
510              }          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
511              else {              ec = msg_box (GetDesktopWindow (),
512                  DestroyWindow (hwnd);                  _("Could not access and/or find the public and secret keyring.\n"
513                  free_gnupg_table ();                    "If this is an accident, quit the program and fix it.\n\n"
514                  return 0;                    "Continue if you want WinPT to offer you more choices.\n"),
515              }                    "WinPT", MB_INFO|MB_YESNO);
516          }              if (ec == IDYES)
517          if (check_default_key (c)) {                  first_start = 1;
518              char * p = get_gnupg_default_key ();          }
519              log_box (_("WinPT Error"), MB_ERR,          if (!first_start) {
520                       _("Default key from the GPG options file could not be found.\n"              msg_box (GetDesktopWindow (), winpt_strerror (rc), _("WinPT Error"), MB_ERR);
521                         "Please check your gpg.conf (options) to correct this:\n\n"              return 0;
522                         "%s: public key not found."), p? p : "[null]");          }
523              free_if_alloc (p);      }
524              DestroyWindow (hwnd);      if (check_for_empty_keyrings (false))
525              free_gnupg_table ();          first_start = 1;
526              return 0;  
527          }      if (!first_start) {
528          if (count_insecure_elgkeys ())          rc = gpg_check_permissions (1);
529              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,          if (rc && rc == 2) /* 2 means read-only mode. */
530                              elgamal_warn_dlg_proc, NULL);              gpg_read_only = 1;
531      }          else if (rc)
532                return 0;
533      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      }
534      keyring_check_last_access (); /* init */      
535      while (GetMessage (&msg, hwnd, 0, 0)) {      init_gnupg_table ();
536          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {  
537              TranslateMessage (&msg);      if (fm_parse_command_line (cmdline) > 0) {
538              DispatchMessage (&msg);          free_gnupg_table ();
539          }          return 0;
540      }      }
541            
542      return 0;      rc = kserver_load_conf ();
543  } /* WinMain */      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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