/[winpt]/trunk/Src/WinPT.cpp
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revision 22 by twoaday, Wed Aug 10 11:33:35 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=4, pa=0; /* GPG 1.4.0 */          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 required GPG version 1.4.0"),          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 = NULL;      }
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!",          if (err) {
248                   "WinPT", MB_INFO);              free_if_alloc (defkey);
249          mobile = 1;              return -1;
250      }          }
251        }
252      set_default_kserver ();      else {
253            /* Actually this is just a warning but we still continue. */
254      if (!mobile) {          msg_box (GetDesktopWindow (), _("No useable secret key found."),
255          regist_inst_gnupg (1);                   _("WinPT Warning"), MB_WARN);
256          regist_inst_winpt (1, &created);          return 0;
257      }      }
258      else {  
259          enable_mobile_mode ();      /* Because the secret key listing has no information
260          /* XXX: ask for GPG path */         about the validity/status, we need to check the public key. */
261          created = 1; /* Disable registry writing */      kc = keycache_get_ctx (1);
262      }      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
263            (key->revoked || key->expired)) {
264      if (!created) {          msg_box (GetDesktopWindow (), _("Default secret key is unuseable"),
265          memset (&reg_prefs, 0, sizeof (reg_prefs));                   _("WinPT Warning"), MB_ERR);
266          reg_prefs.use_tmpfiles = 1; /* default */          free_if_alloc (defkey);
267          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          return -1;
268          get_reg_winpt_prefs (&reg_prefs);      }
269          if (!reg_prefs.no_hotkeys)      free_if_alloc (defkey);
270              hotkeys_modify ();      return 0;
271      }  }
272    
273      rc = gnupg_check_homedir ();  
274      if (rc) {  /* Check that the underlying crypto engine fullfills the minimal
275          log_box (_("WinPT Error"), MB_ERR,     requirements so all commands work properly. */
276                   _("GPG home directory is not set correctly.\n"  static bool
277                     "Please check the GPG registry settings:\n%s."),  check_crypto_engine (void)
278                   winpt_strerror (rc));  {
279          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,      int ma = 0, mi = 0, pa = 0;
280                                             _("Select GPG Public Keyring"),      int rc;
281                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),  
282                                             NULL);      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
283          if (s && !file_exist_check (s))      if (rc == -1) {
284          {          msg_box (GetDesktopWindow (), _("Could not read GnuPG version."),
285              size_t n;                   _("WinPT Error"), MB_ERR);
286              char * p = strrchr (s, '\\');          return false;
287              if (!p)      }
288                  BUG (0);      else if (rc) {
289              n = p - s;          log_box (_("WinPT Error"), MB_ERR,
290              if (n)                   _("A newer GPG version is needed.\n"
291              {                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
292                  char * file = new char[n+1];                     ma, mi, pa);
293                  if (!file)          return false;
294                      BUG (NULL);      }
295                  memset (file, 0, n);      
296                  memcpy (file, s, n);      // TODO: smart card support needs to be revamped
297                  file[n] = '\0';              // and adjusted according to newer OpenPGP cards.
298                  set_reg_entry_gpg ("HomeDir", file);      /*
299                  free_if_alloc (file);      if ((ma > 1 || pa >= 4) && pcsc_available ())
300                  gnupg_check_homedir (); /* change gpgProgram if needed */          scard_support = 1;
301              }      */
302          }      scard_support = 0;
303          else {      
304              msg_box (NULL, _("GPG home directory could not be determited."),      gpgver[0] = ma;
305                       _("WinPT Error"), MB_ERR);      gpgver[1] = mi;
306              goto start;      gpgver[2] = pa;
307          }      return true;
308      }  }
309    
310      rc = check_gnupg_prog ();  
311      if (rc) {  
312          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  /* Check if both keyrings are empty. This indicates that
313                               "Do you want to start the GPG preferences to "     WinPT should offer to generate a key pair. */
314                               "correct  this problem?"), _("WinPT Error"),  static bool
315                               MB_INFO|MB_YESNO) == IDYES)  check_for_empty_keyrings (bool pub_only)
316              start_gpgprefs = 1;  {
317          else      char *p;
318          {      int n;
319              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
320              return 0;      n=0;
321          }      p = get_gnupg_keyring (1, 0);
322      }      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
323            n++;
324      rc = gnupg_access_files ();      free_if_alloc (p);
325      if (!start_gpgprefs && rc)      if (pub_only)
326      {          return n == 1? true : false;
327          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)      p = get_gnupg_keyring (0, 0);
328          {      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
329              ec = msg_box (NULL,          n++;
330                  _("Could not access and/or find the public and secret keyring.\n"      free_if_alloc (p);
331                    "If this is an accident, quit the program and fix it.\n\n"      return n==2? true : false;
332                    "Continue if you want that WinPT offers you more choices.\n"),  }
333                    "WinPT", MB_INFO|MB_YESNO);  
334              if (ec == IDYES)  
335                  first_start = 1;  
336          }  /* Display info message that WinPT is now in debug mode. */
337          if (!first_start)  void
338          {  winpt_debug_msg (void)
339              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  {      
340              return 0;      char output[512];
341          }      char temp[MAX_PATH+1];
342      }          
343        GetTempPath (DIM (temp) - 1, temp);
344      if (!first_start)      _snprintf (output, DIM (output)-1,
345      {          "The GPGME output file is %sgpgme.dbg\n"
346          rc = gpg_check_permissions (1);          "The WinPT output file is %swinpt.log\n", temp, temp);
347          if (rc && rc == 2)      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
348              gpg_read_only = 1;  }
349          else if (rc)  
350              return 0;  
351      }  /* Search for insecure ElGamal keys and return the
352       number of founded keys. */
353      load_gettext ();  static int
354      init_gnupg_table ();  count_insecure_elgkeys (void)
355    {
356      nfiles = fm_parse_command_line (cmdline);      gpg_keycache_t pc;
357      if (nfiles > 0)      gpgme_key_t key;
358          return 0;  
359        int n = 0;
360      if (cmdline && stristr (cmdline, "--wipe-freespace")) {      pc = keycache_get_ctx (1);
361          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      while (!gpg_keycache_next_key (pc, 0, &key)) {
362                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
363                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);              n++;
364          free_gnupg_table ();      }
365          return 0;      gpg_keycache_rewind (pc);
366      }      return n;
367    }
368      load_keyserver_conf (cmdline? 1 : 0);  
369      if (start_keymanager) {  
370          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,  /* Return 1 if the current OS version is at least Windows XP */
371                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  static int
372                              _("Key Manager"), IDS_WINPT_KEYMISC);  check_os_version (void)
373          keycache_release ();  {
374          free_gnupg_table ();      OSVERSIONINFOA osver;    
375          return 0;      memset (&osver, 0, sizeof (osver));
376      }      osver.dwOSVersionInfoSize = sizeof (osver);
377        
378      if (cmdline && (stristr (cmdline, "--keymanager")      log_debug("check OS version");
379                  || stristr (cmdline, "--cardmanager"))) {      if (!GetVersionEx (&osver)) {
380          update_keycache (GetDesktopWindow ());          MessageBox (NULL, _("Could not read the OS version."), _("WinPT Error"), MB_ERR);
381          if (stristr (cmdline, "keymanager"))          return 0;
382              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      }
383                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  
384                              _("Key Manager"), IDS_WINPT_KEYMISC);        if (osver.dwMajorVersion < 5 ||
385          else {          (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)) {
386              gpgme_card_t crd = smartcard_init ();          MessageBox (NULL, _("WinPT requires Windows XP or higher."), _("WinPT Error"), MB_ERR);
387              if (crd)          return 0;
388                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      }
389                                    GetDesktopWindow(), card_edit_dlg_proc,      
390                                    (LPARAM)crd, _("Card Manager"),      return 1;
391                                    IDS_WINPT_CARD_EDIT);  }
392              gpgme_card_release (crd);      
393          }  /* Main entry point. */
394          keycache_release ();  int WINAPI
395          free_gnupg_table ();  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
396          return 0;  {
397      }      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
398        HACCEL accel_tab;
399      CreateMutex (NULL, TRUE, PGM_NAME);      MSG msg;
400      if (GetLastError () == ERROR_ALREADY_EXISTS) {      HWND hwnd = NULL;
401          free_gnupg_table ();      WORD ver[3], ptdver[4];
402          return 0;      
403      }      const char *s;
404        int rc, ec, created = 0;
405      if (cmdline) {      int first_start = 0, start_gpgprefs = 0;
406          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      int winpt_inst_found = 0;
407              gpgme_set_debug_mode (1);      int start_manager = 0;    
408              winpt_debug_msg ();  
409              debug = 1;      if (!check_os_version ())
410          }          return 0;
411      }      
412        glob_hinst = hinst;
413      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      
414      rc = RegisterClass (&wc);      /* Allow to shutdown the process, for instance by an installer */
415      if (rc == FALSE) {      if (cmdline && stristr (cmdline, "--stop")) {
416          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);          hwnd = FindWindow ("WinPT", "WinPT");
417          free_gnupg_table ();          if (hwnd != NULL)
418          return 0;              PostMessage (hwnd, WM_DESTROY, 0, 0);
419      }          return 0;
420        }    
421      hwnd = CreateWindow (PGM_NAME,  
422                           PGM_NAME,      log_debug("check PTD and GPGME version");
423                           0, 0, 0, 0, 0,      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                           NULL,      if (!ec && (ptdver[0] != ver[0] || ptdver[1] != ver[1] || ptdver[2] != ver[2])) {
426                           hinst,          log_box (_("WinPT Error"), MB_ERR,
427                           NULL);                   _("The PTD.dll file has a different version than WinPT.exe\n"
428      if (hwnd == NULL) {                     "Please update the PTD.dll to version %d.%d.%d"),
429          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);                     ver[0], ver[1], ver[2]);
430          free_gnupg_table ();          return 0;
431          return 0;      }
432      }  
433      glob_hwnd = hwnd;      s = gpgme_check_version (NEED_GPGME_VERSION);
434      UpdateWindow (hwnd);      if (!s || !*s) {
435            msg_box (GetDesktopWindow (),
436      if (!first_start && !start_gpgprefs) {                   _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
437          gnupg_backup_options (1);                   _("WinPT Error"), MB_ERR);
438          gnupg_backup_options (0);          return 0;
439                }
440          rc = check_crypto_engine ();  
441          if (rc) {      CreateMutex (NULL, TRUE, PGM_NAME);
442              DestroyWindow (hwnd);      if (GetLastError () == ERROR_ALREADY_EXISTS)
443              free_gnupg_table ();          winpt_inst_found = 1;
444              return 0;      
445          }      gettext_set_user_domain ();
446      }  
447            regist_inst_gnupg (1);
448      if (start_gpgprefs) {      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 first_start_s fs;      }
461          struct genkey_s c;  
462          HWND h;      if (is_gpg4win_installed ()) {
463  start:          log_debug("gpg4win: load gpg environment");
464          h = GetDesktopWindow ();          load_gpg_env (); /* TODO: check return code. */
465          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,      }
466                              gpgprefs_dlg_proc, NULL);  
467          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,      rc = gnupg_check_homedir ();
468                          first_run_dlg_proc, (LPARAM)&fs);      if (rc) {  
469          switch (fs.choice) {          log_box (_("WinPT Error"), MB_ERR,
470          case SETUP_KEYGEN:                   _("GPG home directory is not set correctly.\n"
471              c.interactive = 1;                     "Please check the GPG registry settings:\n%s."),
472              c.first_start = 1;                   winpt_strerror (rc));
473              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,          s = get_fileopen_dlg (GetActiveWindow (),
474                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);                                _("Select GPG Public Keyring"),
475              if (!rc)                                "GPG Keyrings (*.gpg)\0*.gpg\0\0",
476                  goto start;                                NULL);
477              break;          
478            char * p;
479          case SETUP_IMPORT:          if (s != NULL && (p = strrchr (s, '\\'))) {
480              rc = gnupg_copy_keyrings ();              char *path = substr (s, 0, (p-s));
481              if (rc) {  
482                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);              set_reg_entry_gpg ("HomeDir", path);
483                  goto start;              free_if_alloc (path);
484              }          }
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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