/[winpt]/trunk/Src/WinPT.cpp
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revision 14 by twoaday, Wed May 4 07:59:42 2005 UTC revision 415 by twoaday, Sat Feb 11 16:51:01 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 disable_hook = 0;
48  int start_keymanager = 0;  int debug = 0;
49    int gpg_read_only = 0;
50  static void  char gpgver[3];
51  update_keycache (HWND hwnd)  /* End */
52  {  
53      refresh_cache_s rcs = {0};  
54      rcs.kr_reload = 0;  /* Retrieve the product verion of the given file @fname.
55      rcs.kr_update = 1;     Format: MAJOR.MINOR.PATCH1.PATCH2
56      rcs.tr_update = 1;     Return value: 0 on success. */
57      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  int
58                      keycache_dlg_proc, (LPARAM)&rcs);  get_file_version (const char *fname, WORD *major, WORD *minor, WORD *patch1, WORD *patch2)
59  } /* update_keycache */  {
60        VS_FIXEDFILEINFO *inf;
61        char file[MAX_PATH+1] = {0};
62  static char *      LPVOID buf, data;
63  get_gettext_lang (void)      DWORD size;
64  {          UINT qlen;
65      char * fname;      int err = 0;
66      fname = get_reg_entry_mo ();  
67      if (!fname)      strncpy (file, fname, MAX_PATH);
68          return NULL;      size = GetFileVersionInfoSize (file, NULL);
69      return fname;      if (!size)
70  } /* get_gettext_lang */          return -1;
71        
72        buf = (LPVOID)new char[size];
73  static void      if (!buf)
74  load_gettext (void)          BUG (NULL);
75  {      if (!GetFileVersionInfo (file, 0, size, buf)) {
76      char * nls = NULL;          err = -1;
77      char * file = NULL;          goto fail;
78        }
79      nls = get_gettext_lang ();  
80      if (nls) {      qlen = 0;
81          set_gettext_file ("winpt", nls);      VerQueryValue (buf, (char*)"\\", &data, &qlen);
82          file = make_filename (nls, "winpt", "mo");      if (!qlen) {
83          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {          err = -1;
84              msg_box (NULL, _("Could not initizalize file lock.\n"          goto fail;
85                               "Native Language Support"),      }
86                       _("WinPT Error"), MB_ERR);      
87          }      inf = (VS_FIXEDFILEINFO*)data;
88          free_if_alloc (nls);      *major = HIWORD (inf->dwProductVersionMS);
89          free_if_alloc (file);      *minor = LOWORD (inf->dwProductVersionMS);
90      }      *patch1 = HIWORD (inf->dwProductVersionLS);
91  } /* load_gettext */      *patch2 = LOWORD (inf->dwProductVersionLS);
92    
93    fail:
94  /* check if the default key from the gpg.conf file is available in the      delete [](char*)buf;
95     keyring. if not, bail out because encryption won't work properly then. */      return err;
96  static int  }
97  check_default_key (gpgme_keycache_t kc)  
98  {  
99      gpgme_key_t key;  /* Load the key cache and rebuild the signature cache. */
100      gpgme_error_t err = GPGME_No_Error;  int
101      char * defkey;  update_keycache (HWND hwnd)
102    {
103      defkey = get_gnupg_default_key ();      refresh_cache_s rcs;
104      if (defkey)  
105          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      /* no need to rebuild the sig cache each time. */
106      free_if_alloc (defkey);      memset (&rcs, 0, sizeof (rcs));
107      return err? -1 : 0;      rcs.kring_update = 1;
108  } /* check_default_key */      int err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
109                        keycache_dlg_proc, (LPARAM)&rcs);
110        if (err) {
111  /* Return the WinPT program file name (with full pathname). */          char *cfgf = get_gnupg_config ();
112  static const char *          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
113  get_prog_part (const char * fname, int use_cwd)              msg_box (GetDesktopWindow (),
114  {                       _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
115      static char program[1024];          free_if_alloc (cfgf);
116      char currdir[256], * cmd = NULL;          return -1;
117      int j;      }
118                return 0;
119      memset (currdir, 0, DIM (currdir));  }
120      memset (program, 0, DIM (program));  
121            
122      if (use_cwd) {  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
123          GetCurrentDirectory (DIM (currdir)-1, currdir);  void
124          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);  gpg_set_debug_mode (int val)
125      }  {
126      else {      static char buf[MAX_PATH+1];
127          cmd = GetCommandLine ();      
128          if (cmd == NULL)      /* XXX: no gpgme.dbg is created. */
129              return NULL;      if (val > 0) {
130          strncpy (currdir, cmd, 255);          char tmp[128];
131          j = strlen (currdir);          GetTempPath (DIM (tmp)-1, tmp);
132          while (j--) {          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
133              if (currdir[j] == '\\')          putenv (buf);
134                  break;                }
135          }      else
136          currdir[j] = 0;          putenv ("GPGME_DEBUG=");
137          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);  }
138      }  
139      return program;  
140  } /* get_prog_part */  /* Return true if the GPG environment is useable. */
141    static bool
142    gpg_prefs_ok (void)
143  static int  {
144  check_crypto_engine (void)      char *p = get_reg_entry_gpg4win ("gpg.exe");
145  {      if (!p || file_exist_check (p) != 0) {
146      int ma=1, mi=2, pa=4; /* GPG 1.2.4 */          free_if_alloc (p);
147      int rc;          p = get_reg_entry_gpg ("gpgProgram");
148            if (!p || file_exist_check (p) != 0) {
149      rc = check_gnupg_engine (&ma, &mi, &pa);              free_if_alloc (p);
150      if (rc == -1) {              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
151          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);              return false;
152          return rc;          }
153      }      }
154      else if (rc) {      free_if_alloc (p);
155          log_box (_("WinPT Error"), MB_ERR,      p = get_reg_entry_gpg4win (NULL);
156                   _("Sorry, you need a newer GPG version.\n"      if (!p || dir_exist_check (p) != 0) {
157                     "GPG version %d.%d.%d requred GPG version 1.2.4"),          free_if_alloc (p);
158                     ma, mi, pa);          p = get_reg_entry_gpg ("HomeDir");
159          return rc;          if (!p || dir_exist_check (p) != 0) {
160      }              free_if_alloc (p);
161      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */              log_debug ("gpg_prefs_ok: could not determine home directory");
162      if (ma >= 1 && mi >= 4)              return false;
163          scard_support = 1;          }
164        }
165      gpgver[0] = ma;      free_if_alloc (p);
166      gpgver[1] = mi;      return true;
167      gpgver[2] = pa;  }
168      return rc;  
169  } /* check_crypto_engine */  
170    /* Check gpg files if they are read-only and ask the user
171       if this should be corrected. */
172  static int  static void
173  load_keyserver_conf (int quiet)  check_readonly_attr (const char *homedir)
174  {  {
175      const char * t;      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
176      int rc;      
177        log_debug("check if there are gpg files with a read-only attribute");
178      if (reg_prefs.kserv_conf)      for (int i=0; files[i] != NULL; i++) {
179          t = reg_prefs.kserv_conf;          char *file = make_filename (homedir, files[i], NULL);
180      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))          remove_crit_file_attrs (file, 0);
181          t = get_prog_part ("keyserver.conf", 0);          free_if_alloc (file);
182      else      }
183          t = "keyserver.conf";  }
184      rc = kserver_load_conf (t);  
185      if (rc && !quiet)  
186          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);  /* Load the GPG environment. On the first start, some
187      return rc;     checks are performed to find out in what state GPG is.
188  }     Return value: 0  everything OK.
189                     >0  fatal error.
190                     -1 public keyring is empty or does not exist. */
191  static void  static int
192  enable_mobile_mode (void)  load_gpg_env (void)
193  {  {
194      memset (&reg_prefs, 0, sizeof (reg_prefs));      SECURITY_ATTRIBUTES sec_attr;
195      reg_prefs.always_trust = 0;      char *p;
196      reg_prefs.auto_backup = 0;      char *pkr;
197      reg_prefs.cache_time = 0;      int err = 0;
198      reg_prefs.expert = 0;  
199      reg_prefs.keylist_mode = 1;      p = get_reg_entry_gpg4win ("gpg.exe");
200      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      if (!p)
201      reg_prefs.no_zip_mmedia = 1;          return (1);
202      reg_prefs.use_tmpfiles = 1;      if (file_exist_check (p)) {
203      reg_prefs.word_wrap = 80;          free_if_alloc (p);
204      reg_prefs.use_viewer = 0; /* XXX */          return (1);
205  }      }
206        free_if_alloc (p);
207  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);  
208        p = get_reg_entry_gpg ("HomeDir");
209  int WINAPI      if (!p || dir_exist_check (p) != 0) {
210  #ifndef WINPT_IPC          free_if_alloc (p);
211  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)          p = multi_gnupg_path (0);
212  #else      }
213  win_main (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)      if (p && dir_exist_check (p)) {
214  #endif          memset (&sec_attr, 0, sizeof (sec_attr));
215  {          sec_attr.nLength = sizeof (sec_attr);
216      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};          if (!CreateDirectory (p, &sec_attr)) {
217      HACCEL accel_tab;              msg_box (GetDesktopWindow (),
218      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;                       _("Could not create GPG home directory"),
219      int first_start = 0, start_gpgprefs = 0;                       _("WinPT Error"), MB_ERR);
220      const char * s;              free_if_alloc (p);
221      MSG msg;              return (2);
222      HWND hwnd;          }
223        }
224      glob_hinst = hinst;      check_readonly_attr (p);
225            pkr = make_filename (p, "pubring", "gpg");
226      gpgme_lib_init ();      free_if_alloc (p);
227      #ifdef _DEBUG      if (get_file_size (pkr) == 0)
228      gpgme_set_debug_mode (1);          err = -1;
229      #endif      free_if_alloc (pkr);
230      gpgme_set_pgm_string ("WinPT "PGM_VERSION);      return err;
231    }
232      s = PTD_get_version ();  
233      if (strcmp (s, "0.8.0")) {  
234          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,  /* check if the default key from the gpg.conf file is available in the
235                   _("Please update your PTD.dll to the newest version, "     keyring. if not, bail out because encryption won't work properly then. */
236                     "the version (%s) you use is too old."), s);  static int
237          return 0;  check_default_key (void)
238      }  {
239        gpgme_key_t key;
240      if (gpg_md_selftest ()) {      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
241          msg_box (NULL, _("Cryptographic selftest failed."),      gpg_keycache_t kc;
242                   _("WinPT Error"), MB_ERR);      char *defkey;
243          return 0;  
244      }      kc = keycache_get_ctx (0);
245        defkey = get_gnupg_default_key ();
246      if (cmdline && stristr (cmdline, "--mobile"))      if (defkey != NULL) {
247          mobile = 1;          err = gpg_keycache_find_key (kc, defkey, 0, &key);
248            if (err) {
249      set_default_kserver ();              free_if_alloc (defkey);
250                return -1;
251      if (!mobile) {          }
252          regist_inst_gnupg (1);      }
253          regist_inst_winpt (1, &created);      else {
254      }          /* Actually this is just a warning but we still continue. */
255      else {          msg_box (GetDesktopWindow (), _("No useable secret key found."),
256          enable_mobile_mode ();                   _("WinPT Warning"), MB_WARN);
257          /* XXX: ask for GPG path */          return 0;
258          created = 1; /* Disable registry writing */      }
259      }  
260        /* Because the secret key listing has no information
261      if (!created) {         about the validity/status, we need to check the public key. */
262          memset (&reg_prefs, 0, sizeof (reg_prefs));      kc = keycache_get_ctx (1);
263          reg_prefs.use_tmpfiles = 1; /* default */      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
264          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          (key->revoked || key->expired)) {
265          get_reg_winpt_prefs (&reg_prefs);          msg_box (GetDesktopWindow (), _("Default secret key is unuseable"),
266          if (!reg_prefs.no_hotkeys)                   _("WinPT Warning"), MB_ERR);
267              hotkeys_modify ();          free_if_alloc (defkey);
268      }          return -1;
269        }
270      rc = gnupg_check_homedir ();      free_if_alloc (defkey);
271      if (rc) {      return 0;
272          log_box (_("WinPT Error"), MB_ERR,  }
273                   _("GPG home directory is not set correctly.\n"  
274                     "Please check the GPG registry settings:\n%s."),  
275                   winpt_strerror (rc));  /* Check that the underlying crypto engine fullfills the minimal
276          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,     requirements so all commands work properly. */
277                                             _("Select GPG Public Keyring"),  static bool
278                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),  check_crypto_engine (void)
279                                             NULL);  {
280          if (s && !file_exist_check (s))      int ma = 0, mi = 0, pa = 0;
281          {      int rc;
282              size_t n;  
283              char * p = strrchr (s, '\\');      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
284              if (!p)      if (rc == -1) {
285                  BUG (0);          msg_box (GetDesktopWindow (), _("Could not read GnuPG version."),
286              n = p - s;                   _("WinPT Error"), MB_ERR);
287              if (n)          return false;
288              {      }
289                  char * file = new char[n+1];      else if (rc) {
290                  if (!file)          log_box (_("WinPT Error"), MB_ERR,
291                      BUG (NULL);                   _("A newer GPG version is needed.\n"
292                  memset (file, 0, n);                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
293                  memcpy (file, s, n);                     ma, mi, pa);
294                  file[n] = '\0';                  return false;
295                  set_reg_entry_gpg ("HomeDir", file);      }
296                  free_if_alloc (file);      
297                  gnupg_check_homedir (); /* change gpgProgram if needed */      // TODO: smart card support needs to be revamped
298              }      // and adjusted according to newer OpenPGP cards.
299          }      /*
300          else {      if ((ma > 1 || pa >= 4) && pcsc_available ())
301              msg_box (NULL, _("GPG home directory could not be determited."),          scard_support = 1;
302                       _("WinPT Error"), MB_ERR);      */
303              goto start;      scard_support = 0;
304          }      
305      }      gpgver[0] = ma;
306        gpgver[1] = mi;
307      rc = check_gnupg_prog ();      gpgver[2] = pa;
308      if (rc) {      return true;
309          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  }
310                               "Do you want to start the GPG preferences to "  
311                               "correct  this problem?"), _("WinPT Error"),  
312                               MB_INFO|MB_YESNO) == IDYES)  
313              start_gpgprefs = 1;  /* Check if both keyrings are empty. This indicates that
314          else     WinPT should offer to generate a key pair. */
315          {  static bool
316              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  check_for_empty_keyrings (bool pub_only)
317              return 0;  {
318          }      char *p;
319      }      int n;
320    
321      rc = gnupg_access_files ();      n=0;
322      if (!start_gpgprefs && rc)      p = get_gnupg_keyring (1, 0);
323      {      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
324          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)          n++;
325          {      free_if_alloc (p);
326              ec = msg_box (NULL,      if (pub_only)
327                  _("Could not access and/or find the public and secret keyring.\n"          return n == 1? true : false;
328                    "If this is an accident, quit the program and fix it.\n\n"      p = get_gnupg_keyring (0, 0);
329                    "Continue if you want that WinPT offers you more choices.\n"),      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
330                    "WinPT", MB_INFO|MB_YESNO);          n++;
331              if (ec == IDYES)      free_if_alloc (p);
332                  first_start = 1;      return n==2? true : false;
333          }  }
334          if (!first_start)  
335          {  
336              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
337              return 0;  /* Display info message that WinPT is now in debug mode. */
338          }  void
339      }  winpt_debug_msg (void)
340    {      
341      if (!first_start)      char output[512];
342      {      char temp[MAX_PATH+1];
343          rc = gpg_check_permissions (1);          
344          if (rc && rc == 2)      GetTempPath (DIM (temp) - 1, temp);
345              gpg_read_only = 1;      _snprintf (output, DIM (output)-1,
346          else if (rc)          "The GPGME output file is %sgpgme.dbg\n"
347              return 0;          "The WinPT output file is %swinpt.log\n", temp, temp);
348      }      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
349    }
350      load_gettext ();  
351      init_gnupg_table ();  
352    /* Search for insecure ElGamal keys and return the
353      nfiles = fm_parse_command_line (cmdline);     number of founded keys. */
354      if (nfiles > 0)  static int
355          return 0;  count_insecure_elgkeys (void)
356    {
357      if (cmdline && stristr (cmdline, "--wipe-freespace")) {      gpg_keycache_t pc;
358          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      gpgme_key_t key;
359                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,  
360                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);      int n = 0;
361          free_gnupg_table ();      pc = keycache_get_ctx (1);
362          return 0;      while (!gpg_keycache_next_key (pc, 0, &key)) {
363      }          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
364                n++;
365      load_keyserver_conf (cmdline? 1 : 0);      }
366      if (start_keymanager) {      gpg_keycache_rewind (pc);
367          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      return n;
368                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  }
369                              _("Key Manager"), IDS_WINPT_KEYMISC);  
370          keycache_release ();  
371          free_gnupg_table ();  /* Return 1 if the current OS version is at least Windows XP */
372          return 0;  static int
373      }  check_os_version (void)
374    {
375      if (cmdline && (stristr (cmdline, "--keymanager")      OSVERSIONINFOA osver;    
376                  || stristr (cmdline, "--cardmanager"))) {      memset (&osver, 0, sizeof (osver));
377          update_keycache (GetDesktopWindow ());      osver.dwOSVersionInfoSize = sizeof (osver);
378          if (stristr (cmdline, "keymanager"))          
379              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      if (!GetVersionEx (&osver)) {
380                              GetDesktopWindow(), keymanager_dlg_proc, NULL,          MessageBox (NULL, _("Could not read the OS version."), _("WinPT Error"), MB_ERR);
381                              _("Key Manager"), IDS_WINPT_KEYMISC);            return 0;
382          else {      }
383              gpgme_card_t crd = smartcard_init ();  
384              if (crd)      if (osver.dwMajorVersion < 5 ||
385                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,          (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)) {
386                                    GetDesktopWindow(), card_edit_dlg_proc,          MessageBox (NULL, _("WinPT requires Windows XP or higher."), _("WinPT Error"), MB_ERR);
387                                    (LPARAM)crd, _("Card Manager"),          return 0;
388                                    IDS_WINPT_CARD_EDIT);      }
389              gpgme_card_release (crd);      
390          }      return 1;
391          keycache_release ();  }
392          free_gnupg_table ();      
393          return 0;  /* Main entry point. */
394      }  int WINAPI
395    WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
396      CreateMutex (NULL, TRUE, PGM_NAME);  {
397      if (GetLastError () == ERROR_ALREADY_EXISTS) {      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
398          free_gnupg_table ();      HACCEL accel_tab;
399          return 0;      MSG msg;
400      }      HWND hwnd = NULL;
401        WORD ver[3], ptdver[4];
402      if (cmdline) {      
403          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      const char *s;
404              gpgme_set_debug_mode (1);      int rc, ec, created = 0;
405              winpt_debug_msg ();      int first_start = 0, start_gpgprefs = 0;
406              debug = 1;      int winpt_inst_found = 0;
407          }      int start_manager = 0;    
408      }      
409        log_debug("check OS version");
410      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      if (!check_os_version ())
411      rc = RegisterClass (&wc);          return 0;
412      if (rc == FALSE) {      
413          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);      glob_hinst = hinst;
414          free_gnupg_table ();      
415          return 0;      /* Allow to shutdown the process, for instance by an installer */
416      }      if (cmdline && stristr (cmdline, "--stop")) {
417            hwnd = FindWindow ("WinPT", "WinPT");
418      hwnd = CreateWindow (PGM_NAME,          if (hwnd != NULL) {
419                           PGM_NAME,              log_debug("shutdown an existing WinPT process");
420                           0, 0, 0, 0, 0,              PostMessage (hwnd, WM_DESTROY, 0, 0);
421                           NULL,          }
422                           NULL,          return 0;
423                           hinst,      }
424                           NULL);      
425      if (hwnd == NULL) {      /* KLUDGE: test if the hooking is causing problems with some AV programs */
426          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);      if (cmdline && stristr (cmdline, "--disable-hook"))
427          free_gnupg_table ();          disable_hook = 1;
428          return 0;          
429      }  
430      glob_hwnd = hwnd;      log_debug("check PTD and GPGME version");
431      UpdateWindow (hwnd);      get_file_version ("winpt.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
432        ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1], &ptdver[2], &ptdver[3]);
433      if (!first_start && !start_gpgprefs) {      if (!ec && (ptdver[0] != ver[0] || ptdver[1] != ver[1] || ptdver[2] != ver[2])) {
434          gnupg_backup_options (1);          log_box (_("WinPT Error"), MB_ERR,
435          gnupg_backup_options (0);                   _("The PTD.dll file has a different version than WinPT.exe\n"
436                               "Please update the PTD.dll to version %d.%d.%d"),
437          rc = check_crypto_engine ();                     ver[0], ver[1], ver[2]);
438          if (rc) {          return 0;
439              DestroyWindow (hwnd);      }
440              free_gnupg_table ();  
441              return 0;      s = gpgme_check_version (NEED_GPGME_VERSION);
442          }      if (!s || !*s) {
443      }          msg_box (GetDesktopWindow (),
444                     _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
445      if (start_gpgprefs)                   _("WinPT Error"), MB_ERR);
446      {          return 0;
447          char *ring;      }
448          size_t size = 0;  
449          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      CreateMutex (NULL, TRUE, PGM_NAME);
450                          gpgprefs_dlg_proc, NULL);      if (GetLastError () == ERROR_ALREADY_EXISTS)
451          ring = get_gnupg_keyring (0, !NO_STRICT);          winpt_inst_found = 1;
452          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)      
453              first_start = 1; /* The keyring is empty! */      gettext_set_user_domain ();
454          free_if_alloc (ring);  
455      }      regist_inst_gnupg (1);
456        regist_inst_winpt (1, &created);
457      if (first_start) {  
458          struct key_wizard_s c, dummy;      if (!created) {
459  start:          memset (&reg_prefs, 0, sizeof (reg_prefs));
460          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,          get_reg_winpt_prefs (&reg_prefs);
461                          first_run_dlg_proc, (LPARAM)&dummy);          reg_prefs.fm.progress = 0; /* TODO: fix the bug and enable it again */
462          switch (dummy.interactive)          if (gnupg_load_config () == -2)
463          {              msg_box (GetDesktopWindow (),
464          case SETUP_KEYGEN:                       _("The gpg.conf file contains the 'textmode' option\n"
465              c.interactive = 1;                         "which leads to broken binary output during decryption.\n"
466              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,                         "If this is on purpose, just continue otherwise the option should be disabled."),
467                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);                       _("WinPT Error"), MB_ERR);
468              if (!rc)      }
469                  goto start;  
470              break;      if (is_gpg4win_installed ()) {
471            log_debug("gpg4win: load gpg environment");
472          case SETUP_IMPORT:          load_gpg_env (); /* TODO: check return code. */
473              rc = gnupg_copy_keyrings ();      }
474              if (rc) {  
475                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      rc = gnupg_check_homedir ();
476                  goto start;      if (rc) {  
477              }          log_box (_("WinPT Error"), MB_ERR,
478              break;                   _("GPG home directory is not set correctly.\n"
479                       "Please check the GPG registry settings:\n%s."),
480          case SETUP_EXISTING:                   winpt_strerror (rc));
481              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          s = get_fileopen_dlg (GetActiveWindow (),
482                              gpgprefs_dlg_proc, NULL);                                _("Select GPG Public Keyring"),
483              break;                                "GPG Keyrings (*.gpg)\0*.gpg\0\0",
484                                  NULL);
485          case -1:          
486              DestroyWindow (hwnd);          char * p;
487              free_gnupg_table ();          if (s != NULL && (p = strrchr (s, '\\'))) {
488              return 0;              char *path = substr (s, 0, (p-s));
489          }  
490          update_keycache (hwnd);              set_reg_entry_gpg ("HomeDir", path);
491          check_crypto_engine ();              free_if_alloc (path);
492      }          }
493      else {          else {
494          gpgme_keycache_t c;              msg_box (GetDesktopWindow (),
495          update_keycache (hwnd);                       _("GPG home directory could not be determined."),
496          c = keycache_get_ctx (1);                       _("WinPT Error"), MB_ERR);
497          if (!c || !gpgme_keycache_count (c)) {              goto start;
498              gnupg_display_error ();          }
499              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"      }
500                               "Please check your GPG config (keyrings, pathes...)"),  
501                               _("WinPT Error"), MB_ERR);      rc = check_gnupg_prog ();
502              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"      if (rc) {
503                                    "Do you want to start the GPG preferences dialog?"),          if (msg_box (GetDesktopWindow (),
504                              "WinPT", MB_INFO|MB_YESNO);                       _("Could not find the GPG binary (gpg.exe).\n"
505              if (ec == IDYES) {                         "Do you want to start the GPG preferences to "
506                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,                         "correct  this problem?"), _("WinPT Error"),
507                                  gpgprefs_dlg_proc, NULL);                       MB_INFO|MB_YESNO) == IDYES)
508                  update_keycache (hwnd);              start_gpgprefs = 1;
509              }          else {
510              else {              msg_box (GetDesktopWindow (),
511                  DestroyWindow (hwnd);                       winpt_strerror (rc), _("WinPT Error"), MB_ERR);
512                  free_gnupg_table ();              return 0;
513                  return 0;          }
514              }      }
515          }  
516          if (check_default_key (c)) {      rc = gnupg_access_files ();
517              char * p = get_gnupg_default_key ();      if (!start_gpgprefs && rc) {
518              log_box (_("WinPT Error"), MB_ERR,          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
519                       _("Default key from the GPG options file could not be found.\n"              ec = msg_box (GetDesktopWindow (),
520                         "Please check your gpg.conf (options) to correct this:\n\n"                  _("Could not access and/or find the public and secret keyring.\n"
521                         "%s: public key not found."), p? p : "[null]");                    "If this is an accident, quit the program and fix it.\n\n"
522              free_if_alloc (p);                    "Continue if you want WinPT to offer you more choices.\n"),
523              DestroyWindow (hwnd);                    "WinPT", MB_INFO|MB_YESNO);
524              free_gnupg_table ();              if (ec == IDYES)
525              return 0;                  first_start = 1;
526          }          }
527          if (count_insecure_elgkeys ())          if (!first_start) {
528              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,              msg_box (GetDesktopWindow (), winpt_strerror (rc), _("WinPT Error"), MB_ERR);
529                              elgamal_warn_dlg_proc, NULL);              return 0;
530      }          }
531        }
532      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      if (check_for_empty_keyrings (false))
533      keyring_check_last_access (); /* init */          first_start = 1;
534      while (GetMessage (&msg, hwnd, 0, 0)) {  
535          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      if (!first_start) {
536              TranslateMessage (&msg);          rc = gpg_check_permissions (1);
537              DispatchMessage (&msg);          if (rc && rc == 2) /* 2 means read-only mode. */
538          }              gpg_read_only = 1;
539      }          else if (rc)
540                        return 0;
541      return 0;      }
542  } /* WinMain */      
543        init_gnupg_table ();
544    
545        if (fm_parse_command_line (cmdline) > 0) {
546            free_gnupg_table ();
547            return 0;
548        }
549    
550        rc = kserver_load_conf ();
551        if (rc)
552            msg_box (GetDesktopWindow (), winpt_strerror (rc),
553                     _("Keyserver"), MB_ERR);
554    
555        if (cmdline && (stristr (cmdline, "--keymanager")
556                    || stristr (cmdline, "--cardmanager"))) {
557            /* If an instance of WinPT is running, just send the command
558               to open the key manager. Otherwise start a new instance. */
559            HWND tray = FindWindow ("WinPT", "WinPT");
560            if (stristr (cmdline, "keymanager"))
561                start_manager = ID_WINPT_KEY;
562            else
563                start_manager = ID_WINPT_CARD;
564            if (tray != NULL) {
565                PostMessage (tray, WM_COMMAND, start_manager, 0);
566                free_gnupg_table ();
567                return 0;
568            }
569        }
570    
571        /* If we found another WinPT instance, just quit to avoid it
572           will be executed twice. */
573        if (winpt_inst_found) {
574            log_debug ("%s", "WinMain: WinPT is already running.");
575            free_gnupg_table ();
576            return 0;
577        }
578    
579        if (cmdline && (stristr (cmdline, "--enable-debug") ||
580                        stristr (cmdline, "--debug"))) {
581            gpg_set_debug_mode (1);
582            winpt_debug_msg ();
583            debug = 1;
584        }
585    
586        wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));
587        rc = RegisterClass (&wc);
588        if (rc == FALSE) {
589            msg_box (GetDesktopWindow (), _("Could not register window class"),
590                     _("WinPT Error"), MB_ERR);
591            free_gnupg_table ();
592            return 0;
593        }
594    
595        hwnd = CreateWindow (PGM_NAME,
596                             PGM_NAME,
597                             0, 0, 0, 0, 0,
598                             NULL,
599                             NULL,
600                             hinst,
601                             NULL);
602        if (hwnd == NULL) {
603            msg_box (GetDesktopWindow (),
604                     _("Could not create window"),
605                     _("WinPT Error"), MB_ERR);
606            free_gnupg_table ();
607            return 0;
608        }
609        glob_hwnd = hwnd;
610        UpdateWindow (hwnd);
611    
612        if (!first_start && !start_gpgprefs) {
613            log_debug("backup gpg config file and check back-end");
614            gnupg_backup_options ();        
615            if (!check_crypto_engine ()) {
616                DestroyWindow (hwnd);
617                free_gnupg_table ();
618                return 0;
619            }
620        }
621        
622        if (start_gpgprefs) {
623            DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
624                            gpgprefs_dlg_proc, 0);
625            if (check_for_empty_keyrings (true))
626                first_start = 1; /* The public keyring is empty. */
627        }
628    
629        if (first_start) {
630            struct genkey_s c;
631            int choice;
632            HWND h;
633    start:
634            h = GetDesktopWindow ();
635            if (!gpg_prefs_ok ())
636                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,
637                                gpgprefs_dlg_proc, 0);
638            choice = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,
639                                     first_run_dlg_proc, 0);
640            switch (choice) {
641            case SETUP_KEYGEN:
642                c.interactive = 1;
643                c.first_start = 1;
644                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,
645                                     h, keygen_wizard_dlg_proc, (LPARAM)&c);
646                if (!rc)
647                    goto start;
648                break;
649    
650            case SETUP_IMPORT:
651                rc = gnupg_copy_keyrings ();
652                if (rc) {
653                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
654                    goto start;
655                }
656                break;
657    
658            case SETUP_EXISTING:
659                rc = gnupg_import_keypair ();
660                if (rc) {
661                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
662                    goto start;
663                }
664                break;
665    
666            case SETUP_CARDGEN:
667                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_CARD_KEYGEN,
668                                     h, card_keygen_dlg_proc, 0);
669                if (!rc)
670                    goto start;
671                break;
672    
673            case 0: /* Cancel/Abort. */
674            default:
675                DestroyWindow (hwnd);
676                free_gnupg_table ();
677                return 0;
678            }
679            update_keycache (hwnd);
680            if (!check_crypto_engine ()) {
681                DestroyWindow (hwnd);
682                free_gnupg_table ();
683                keycache_release (1);
684                return 0;
685            }
686        }
687        else {
688            gpg_keycache_t c;
689            if (update_keycache (hwnd)) {
690                DestroyWindow (hwnd);
691                free_gnupg_table ();
692                keycache_release (1);
693                return 0;
694            }
695            /* XXX: rewrite this part. */
696            c = keycache_get_ctx (1);
697            if (!gpg_keycache_get_size (c)) {
698                msg_box (hwnd, _("The keycache was not initialized or is empty.\n"
699                                 "Please check your GPG config (keyrings, pathes...)"),
700                                 _("WinPT Error"), MB_ERR);
701                ec = msg_box (GetDesktopWindow (),
702                              _("It seems that GPG is not configured properly.\n"
703                                "Do you want to start the GPG preferences dialog?"),
704                              "WinPT", MB_INFO|MB_YESNO);
705                if (ec == IDYES) {
706                    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
707                                    gpgprefs_dlg_proc, 0);
708                    update_keycache (hwnd);
709                }
710                else {
711                    DestroyWindow (hwnd);
712                    free_gnupg_table ();
713                    keycache_release (1);
714                    return 0;
715                }
716            }      
717            if (check_default_key ()) {
718                char *p = get_gnupg_default_key ();
719                log_box (_("WinPT Error"), MB_ERR,
720                         _("Default key (from the GPG config file) could not be found or is unuseable.\n"
721                           "The default key will be resetted and can be set later in the Key Manager again.\n\n"
722                           "%s: secret key not found."), p? p : "?");
723                set_gnupg_default_key (NULL);
724                free_if_alloc (p);
725            }
726            if (count_insecure_elgkeys ())
727                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,
728                                elgamal_warn_dlg_proc, 0);
729        }
730      
731        if (start_manager)
732            PostMessage (hwnd, WM_COMMAND, start_manager, 0);
733    
734        accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);
735        keyring_check_last_access (); /* init */
736        while (GetMessage (&msg, hwnd, 0, 0)) {
737            if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {
738                TranslateMessage (&msg);
739                DispatchMessage (&msg);
740            }
741        }
742        
743        return 0;
744    }
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