/[winpt]/trunk/Src/WinPT.cpp
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revision 8 by twoaday, Mon Apr 4 13:29:25 2005 UTC revision 278 by twoaday, Mon Jan 15 22:02:04 2007 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) 2000-2006 Timo Schulz
3   *   *
4   * This file is part of WinPT.   * This file is part of WinPT.
5   *   *
6   * WinPT is free software; you can redistribute it and/or modify   * WinPT is free software; you can redistribute it and/or modify
7   * it under the terms of the GNU General Public License as published by   * it under the terms of the GNU General Public License as published by
8   * the Free Software Foundation; either version 2 of the License, or   * the Free Software Foundation; either version 2 of the License, or
9   * (at your option) any later version.   * (at your option) any later version.
10   *   *
11   * WinPT is distributed in the hope that it will be useful,   * WinPT is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License for more details.   * GNU General Public License for more details.
15   *   */
16   * You should have received a copy of the GNU General Public License  #ifdef HAVE_CONFIG_H
17   * along with WinPT; if not, write to the Free Software Foundation,  #include <config.h>
18   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA  #endif
19   */  
20    #include <windows.h>
21  #include <windows.h>  #include <shlobj.h>
22    
23  #include "../resource.h"  #include "resource.h"
24  #include "wptTypes.h"  #include "wptTypes.h"
25  #include "wptW32API.h"  #include "wptW32API.h"
26  #include "wptVersion.h"  #include "wptVersion.h"
27  #include "wptErrors.h"  #include "wptErrors.h"
28  #include "wptGPG.h"  #include "wptGPG.h"
29  #include "wptRegistry.h"  #include "wptRegistry.h"
30  #include "wptCommonCtl.h"  #include "wptCommonCtl.h"
31  #include "wptDlgs.h"  #include "wptDlgs.h"
32  #include "wptNLS.h"  #include "wptNLS.h"
33  #include "wptKeyserver.h"  #include "wptKeyserver.h"
34  #include "wptCard.h"  #include "wptCard.h"
35  #include "wptFileManager.h"  #include "wptFileManager.h"
36  #include "wptContext.h"  #include "wptContext.h"
37    #include "wptCardEdit.h"
38  HINSTANCE glob_hinst; /* global instance for the dialogs */  #include "wptCrypto.h"
39  HWND glob_hwnd; /* global window handle for the dialogs */  #include "wptUTF8.h"
40  HWND activ_hwnd;  
41  LOCK mo_file;  void remove_crit_file_attrs (const char *fname, int force);
42  int scard_support = 0;  BOOL user_is_admin (void);
43  int debug = 0;  int  pcsc_available (void);
44  int mobile = 0;  
45  int gpg_read_only = 0;  /* Global variables. */
46  char gpgver[3];  HINSTANCE glob_hinst;   /* global instance for the dialogs */
47    HWND glob_hwnd;         /* global window handle for the dialogs */
48    int scard_support = 0;
49  static void  int debug = 0;
50  update_keycache (HWND hwnd)  int gpg_read_only = 0;
51  {  int admin_user = 0;
52      refresh_cache_s rcs = {0};  char gpgver[3];
53      rcs.kr_reload = 0;  /* End */
54      rcs.kr_update = 1;  
55      rcs.tr_update = 1;  
56      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  /* Load the key cache and rebuild the signature cache. */
57                      keycache_dlg_proc, (LPARAM)&rcs);  int
58  } /* update_keycache */  update_keycache (HWND hwnd)
59    {
60        int err;
61  static char *      refresh_cache_s rcs;
62  get_gettext_lang (void)  
63  {          /* no need to rebuild the sig cache each time. */
64      char * fname;      memset (&rcs, 0, sizeof (rcs));
65      fname = get_reg_entry_mo ();      rcs.kring_update = 1;
66      if (!fname)      err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
67          return NULL;                      keycache_dlg_proc, (LPARAM)&rcs);
68      return fname;      if (err) {
69  } /* get_gettext_lang */          char *cfgf = get_gnupg_config ();
70            if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
71                msg_box (NULL, _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
72  static void          free_if_alloc (cfgf);
73  load_gettext (void)          return -1;
74  {      }
75      char * nls = NULL;      return 0;
76      char * file = NULL;  }
77    
78      nls = get_gettext_lang ();  
79      if (nls) {  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
80          set_gettext_file ("winpt", nls);  void
81          file = make_filename (nls, "winpt", "mo");  gpg_set_debug_mode (int val)
82          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {  {
83              msg_box (NULL, _("Could not initizalize file lock.\n"      static char buf[256];
84                               "Native Language Support"),      char tmp[128];
85                       _("WinPT Error"), MB_ERR);      
86          }      /* XXX: no gpgme.dbg is created. */
87          free_if_alloc (nls);      if (val > 0) {
88          free_if_alloc (file);          GetTempPath (DIM (tmp)-1, tmp);
89      }          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
90  } /* load_gettext */          putenv (buf);
91        }
92        else
93  /* check if the default key from the gpg.conf file is available in the          putenv ("GPGME_DEBUG=");
94     keyring. if not, bail out because encryption won't work properly then. */  }
95  static int  
96  check_default_key (gpgme_keycache_t kc)  
97  {  /* Initialize the gettext sub system. */
98      gpgme_key_t key;  static void
99      gpgme_error_t err = GPGME_No_Error;  load_gettext (void)
100      char * defkey;  {
101        char *nls;
102      defkey = get_gnupg_default_key ();  
103      if (defkey)      /* Return the name of the gettext language file. */
104          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      nls = get_reg_entry_mo ();
105      free_if_alloc (defkey);      if (nls != NULL) {
106      return err? -1 : 0;          gettext_set_file ("winpt", nls);
107  } /* check_default_key */          free_if_alloc (nls);
108        }
109    }
110  /* Return the WinPT program file name (with full pathname). */  
111  static const char *  
112  get_prog_part (const char * fname, int use_cwd)  /* Return true if the GPG environment is useable. */
113  {  static bool
114      static char program[1024];  gpg_prefs_ok (void)
115      char currdir[256], * cmd = NULL;  {
116      int j;      char *p;
117            
118      memset (currdir, 0, DIM (currdir));      p = get_reg_entry_gpg4win ("gpg.exe");
119      memset (program, 0, DIM (program));      if (!p || file_exist_check (p) != 0) {
120                    free_if_alloc (p);
121      if (use_cwd) {          p = get_reg_entry_gpg ("gpgProgram");
122          GetCurrentDirectory (DIM (currdir)-1, currdir);          if (!p || file_exist_check (p) != 0) {
123          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);              free_if_alloc (p);
124      }              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
125      else {              return false;
126          cmd = GetCommandLine ();          }
127          if (cmd == NULL)      }
128              return NULL;      free_if_alloc (p);
129          strncpy (currdir, cmd, 255);      p = get_reg_entry_gpg4win (NULL);
130          j = strlen (currdir);      if (!p || dir_exist_check (p) != 0) {
131          while (j--) {          free_if_alloc (p);
132              if (currdir[j] == '\\')          p = get_reg_entry_gpg ("HomeDir");
133                  break;                    if (!p || dir_exist_check (p) != 0) {
134          }              free_if_alloc (p);
135          currdir[j] = 0;              log_debug ("gpg_prefs_ok: could not determine home directory");
136          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);              return false;
137      }          }
138      return program;      }
139  } /* get_prog_part */      free_if_alloc (p);
140        return true;
141    }
142  static int  
143  check_crypto_engine (void)  
144  {  /* Check gpg files if they are read-only and ask the user
145      int ma=1, mi=2, pa=4; /* GPG 1.2.4 */     if this should be corrected. */
146      int rc;  static void
147    check_readonly_attr (const char *homedir)
148      rc = check_gnupg_engine (&ma, &mi, &pa);  {
149      if (rc == -1) {      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
150          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);      char *file;
151          return rc;      int i;
152      }  
153      else if (rc) {      for (i=0; files[i] != NULL; i++) {
154          log_box (_("WinPT Error"), MB_ERR,          file = make_filename (homedir, files[i], NULL);
155                   _("Sorry, you need a newer GPG version.\n"          remove_crit_file_attrs (file, 0);
156                     "GPG version %d.%d.%d requred GPG version 1.2.4"),          free_if_alloc (file);
157                     ma, mi, pa);      }
158          return rc;  }
159      }  
160      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */  
161      if (ma >= 1 && mi >= 4)  /* Load the GPG environment. On the first start, some
162          scard_support = 1;     checks are performed to find out in what state GPG is.
163       Return value: 0  everything OK.
164      gpgver[0] = ma;                   >0  fatal error.
165      gpgver[1] = mi;                   -1 public keyring is empty or does not exist. */
166      gpgver[2] = pa;  static int
167      return rc;  load_gpg_env (void)
168  } /* check_crypto_engine */  {
169        SECURITY_ATTRIBUTES sec_attr;
170        char *p;
171  static int      char *pkr;
172  load_keyserver_conf (int quiet)      int err = 0;
173  {  
174      const char * t;      p = get_reg_entry_gpg4win ("gpg.exe");
175      int rc;      if (!p)
176            return (1);
177      if (reg_prefs.kserv_conf)      if (file_exist_check (p)) {
178          t = reg_prefs.kserv_conf;          free_if_alloc (p);
179      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))          return (1);
180          t = get_prog_part ("keyserver.conf", 0);      }
181      else      free_if_alloc (p);
182          t = "keyserver.conf";  
183      rc = kserver_load_conf (t);      p = get_reg_entry_gpg ("HomeDir");
184      if (rc && !quiet)      if (!p || dir_exist_check (p) != 0) {
185          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);          free_if_alloc (p);
186      return rc;          p = multi_gnupg_path (0);
187  }      }
188        if (p && dir_exist_check (p)) {
189            memset (&sec_attr, 0, sizeof (sec_attr));
190  static void          sec_attr.nLength = sizeof (sec_attr);
191  enable_mobile_mode (void)          if (!CreateDirectory (p, &sec_attr)) {
192  {              msg_box (NULL, _("Could not create GPG home directory"),
193      memset (&reg_prefs, 0, sizeof (reg_prefs));                       _("WinPT Error"), MB_ERR);
194      reg_prefs.always_trust = 0;              free_if_alloc (p);
195      reg_prefs.auto_backup = 0;              return (2);
196      reg_prefs.cache_time = 0;          }
197      reg_prefs.expert = 0;      }
198      reg_prefs.keylist_mode = 1;      check_readonly_attr (p);
199      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      pkr = make_filename (p, "pubring", "gpg");
200      reg_prefs.no_zip_mmedia = 1;      free_if_alloc (p);
201      reg_prefs.use_tmpfiles = 1;      if (get_file_size (pkr) == 0)
202      reg_prefs.word_wrap = 80;          err = -1;
203      reg_prefs.use_viewer = 0; /* XXX */      free_if_alloc (pkr);
204  }      return err;
205    }
206    
207  int WINAPI  
208  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)  /* check if the default key from the gpg.conf file is available in the
209  {     keyring. if not, bail out because encryption won't work properly then. */
210      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};  static int
211      HACCEL accel_tab;  check_default_key (void)
212      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;  {
213      int first_start = 0, start_gpgprefs = 0;      gpgme_key_t key;
214      const char * s;      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
215      MSG msg;      gpg_keycache_t kc;
216      HWND hwnd;      char *defkey;
217    
218      glob_hinst = hinst;      kc = keycache_get_ctx (0);
219            defkey = get_gnupg_default_key ();
220      gpgme_lib_init ();      if (defkey) {
221      #ifdef _DEBUG          err = gpg_keycache_find_key (kc, defkey, 0, &key);
222      gpgme_set_debug_mode (1);          if (err) {
223      #endif              free_if_alloc (defkey);
224      gpgme_set_pgm_string ("WinPT "PGM_VERSION);              return -1;
225            }
226      s = PTD_get_version ();      }
227      if (strcmp (s, "0.8.0")) {      else {
228          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,          /* Actually this is just a warning but we still continue. */
229                   _("Please update your PTD.dll to the newest version, "          msg_box (NULL, _("No useable secret key found."),
230                     "the version (%s) you use is too old."), s);                   _("WinPT Warning"), MB_WARN);
231          return 0;          free_if_alloc (defkey);
232      }          return 0;
233        }
234      if (gpg_md_selftest ()) {  
235          msg_box (NULL, _("Cryptographic selftest failed."),      /* Because the secret key listing has no information
236                   _("WinPT Error"), MB_ERR);         about the validity/status, we need to check the public key. */
237          return 0;      kc = keycache_get_ctx (1);
238      }      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
239            (key->revoked || key->expired)) {
240      if (cmdline && stristr (cmdline, "--mobile"))          msg_box (NULL, _("Default secret key is unuseable"),
241          mobile = 1;                   _("WinPT Warning"), MB_ERR);
242            free_if_alloc (defkey);
243      set_default_kserver ();          return -1;
244        }
245      if (!mobile) {      free_if_alloc (defkey);
246          regist_inst_gnupg (1);      return 0;
247          regist_inst_winpt (1, &created);  }
248      }  
249      else {  
250          enable_mobile_mode ();  /* Return the WinPT program file name (with full pathname). */
251          /* XXX: ask for GPG path */  static const char*
252          created = 1; /* Disable registry writing */  get_prog_part (const char *fname, int use_cwd)
253      }  {
254        static char program[2*MAX_PATH+1];
255      if (!created) {      char currdir[MAX_PATH+1];
256          memset (&reg_prefs, 0, sizeof (reg_prefs));      char *cmd = NULL;
257          reg_prefs.use_tmpfiles = 1; /* default */      int j;
258          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          
259          get_reg_winpt_prefs (&reg_prefs);      memset (currdir, 0, DIM (currdir));
260          if (!reg_prefs.no_hotkeys)      memset (program, 0, DIM (program));
261              hotkeys_modify ();          
262      }      if (use_cwd) {
263            GetCurrentDirectory (DIM (currdir)-1, currdir);
264      rc = gnupg_check_homedir ();          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
265      if (rc) {      }
266          log_box (_("WinPT Error"), MB_ERR,      else {
267                   _("GPG home directory is not set correctly.\n"          cmd = GetCommandLine ();
268                     "Please check the GPG registry settings:\n%s."),          if (!cmd)
269                   winpt_strerror (rc));              return NULL;
270          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,          strncpy (currdir, cmd, DIM (currdir)-1);
271                                             _("Select GPG Public Keyring"),          j = strlen (currdir);
272                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),          while (j--) {
273                                             NULL);              if (currdir[j] == '\\')
274          if (s && !file_exist_check (s))                  break;
275          {          }
276              size_t n;          currdir[j] = 0;
277              char * p = strrchr (s, '\\');          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
278              if (!p)      }
279                  BUG (0);      return program;
280              n = p - s;  }
281              if (n)  
282              {  
283                  char * file = new char[n+1];  /* Check that the underlying crypto engine fullfills the minimal
284                  if (!file)     requirements so all commands work properly. */
285                      BUG (NULL);  static bool
286                  memset (file, 0, n);  check_crypto_engine (void)
287                  memcpy (file, s, n);  {
288                  file[n] = '\0';              int ma = 0, mi = 0, pa = 0;
289                  set_reg_entry_gpg ("HomeDir", file);      int rc;
290                  free_if_alloc (file);  
291                  gnupg_check_homedir (); /* change gpgProgram if needed */      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
292              }      if (rc == -1) {
293          }          msg_box (NULL, _("Could not read GnuPG version."),
294          else {                   _("WinPT Error"), MB_ERR);
295              msg_box (NULL, _("GPG home directory could not be determited."),          return false;
296                       _("WinPT Error"), MB_ERR);      }
297              goto start;      else if (rc) {
298          }          log_box (_("WinPT Error"), MB_ERR,
299      }                   _("A newer GPG version is needed.\n"
300                       "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
301      rc = check_gnupg_prog ();                     ma, mi, pa);
302      if (rc) {          return false;
303          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"      }
304                               "Do you want to start the GPG preferences to "      /* Enable smart card support for GPG 2 or >= 1.4 */
305                               "correct  this problem?"), _("WinPT Error"),      if ((ma > 1 || pa >= 4) && pcsc_available ())
306                               MB_INFO|MB_YESNO) == IDYES)          scard_support = 1;
307              start_gpgprefs = 1;  
308          else      gpgver[0] = ma;
309          {      gpgver[1] = mi;
310              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      gpgver[2] = pa;
311              return 0;      return true;
312          }  }
313      }  
314    
315      rc = gnupg_access_files ();  /* Try to load the keyserver config file. If @quiet is 1
316      if (!start_gpgprefs && rc)     do not show any errors. */
317      {  static int
318          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)  load_keyserver_conf (int quiet)
319          {  {    
320              ec = msg_box (NULL,      const char *t, *conf;
321                  _("Could not access and/or find the public and secret keyring.\n"      char *buf;
322                    "If this is an accident, quit the program and fix it.\n\n"      int rc;
323                    "Continue if you want that WinPT offers you more choices.\n"),  
324                    "WinPT", MB_INFO|MB_YESNO);      #ifdef WINPT_MOBILE
325              if (ec == IDYES)      /* In mobile mode we automatically assume the config file
326                  first_start = 1;         in the current directory. */
327          }      return kserver_load_conf ("keyserver.conf");
328          if (!first_start)      #endif
329          {  
330              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      /* Create $APPDATA\winpt if needed. */
331              return 0;      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
332          }      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
333      }          MessageBox (NULL, _("Failed to create WinPT directory"),
334                        _("Keyserver"), MB_ERR);
335      if (!first_start)          free_if_alloc (buf);
336      {          return -1;
337          rc = gpg_check_permissions (1);      }
338          if (rc && rc == 2)      free_if_alloc (buf);
339              gpg_read_only = 1;  
340          else if (rc)      /* Check for $APPDATA\winpt\keyserver.conf */
341              return 0;      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
342      }  
343        conf = get_prog_part ("keyserver.conf", 0);
344      load_gettext ();      if (!file_exist_check (conf))
345      init_gnupg_table ();          t = conf;
346        else
347      nfiles = fm_parse_command_line (cmdline);          t = "keyserver.conf";
348      if (nfiles > 0)      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
349          return 0;          if (!CopyFile (t, buf, FALSE)) {
350                MessageBox (NULL, _("Failed to copy the keyserver.conf"),
351      if (cmdline && stristr (cmdline, "--wipe-freespace")) {                          _("Keyserver"), MB_ERR);
352          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,              free_if_alloc (buf);
353                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,              return -1;
354                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);          }
355          free_gnupg_table ();          t = buf;
356          return 0;      }
357      }      else
358            t = buf;
359      load_keyserver_conf (cmdline? 1 : 0);      
360      if (cmdline && (stristr (cmdline, "--keymanager")      rc = kserver_load_conf (t);
361                  || stristr (cmdline, "--cardmanager"))) {      if (rc && !quiet)
362          update_keycache (GetDesktopWindow ());          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
363          if (stristr (cmdline, "keymanager"))      else {
364              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,          free_if_alloc (reg_prefs.kserv_conf);
365                              GetDesktopWindow(), keymanager_dlg_proc, NULL,          reg_prefs.kserv_conf = m_strdup (t);
366                              _("Key Manager"), IDS_WINPT_KEYMISC);      }
367          else {      free_if_alloc (buf);
368              gpgme_card_t crd = smartcard_init ();      return rc;
369              if (crd)  }
370                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,  
371                                    GetDesktopWindow(), card_edit_dlg_proc,  
372                                    (LPARAM)crd, _("Card Manager"),  /* Check if both keyrings are empty. This indicates that
373                                    IDS_WINPT_CARD_EDIT);     WinPT should offer to generate a key pair. */
374              gpgme_card_release (crd);  static bool
375          }  check_for_empty_keyrings (bool pub_only)
376          keycache_release ();  {
377          free_gnupg_table ();      char *p;
378          return 0;      int n = 0;
379      }  
380        p = get_gnupg_keyring (1, 0);
381      CreateMutex (NULL, TRUE, PGM_NAME);      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
382      if (GetLastError () == ERROR_ALREADY_EXISTS) {          n++;
383          free_gnupg_table ();      free_if_alloc (p);
384          return 0;      if (pub_only)
385      }          return n == 1? true : false;
386        p = get_gnupg_keyring (0, 0);
387      if (cmdline) {      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
388          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {          n++;
389              gpgme_set_debug_mode (1);      free_if_alloc (p);
390              winpt_debug_msg ();      return n==2? true : false;
391              debug = 1;  }
392          }  
393      }  
394    #ifdef WINPT_MOBILE
395      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));  /* Enable the mobile mode if possible.
396      rc = RegisterClass (&wc);     There are some constraints which must be fullfilled.
397      if (rc == FALSE) {     Return value: 0 on success. */
398          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);  static int
399          free_gnupg_table ();  enable_mobile_mode (void)
400          return 0;  {
401      }      static const char *test_fname = "winpt_mobile_test.txt";
402        FILE *fp;
403      hwnd = CreateWindow (PGM_NAME,      char *pubring;
404                           PGM_NAME,      ULARGE_INTEGER caller, total;
405                           0, 0, 0, 0, 0,      DWORD temp_size;
406                           NULL,  
407                           NULL,      fp = fopen (test_fname, "wb");
408                           hinst,      if (fp == NULL) {
409                           NULL);          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
410      if (hwnd == NULL) {                            "for the current directory", "WinPT Error", MB_ERR);
411          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);              
412          free_gnupg_table ();          return -1;
413          return 0;      }
414      }      fclose (fp);
415      glob_hwnd = hwnd;      DeleteFile (test_fname);
416      UpdateWindow (hwnd);      if (file_exist_check ("gpg.exe")) {
417            MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
418      if (!first_start && !start_gpgprefs) {                            "as the WinPT program", "WinPT Error", MB_ERR);
419          gnupg_backup_options (1);          return -1;
420          gnupg_backup_options (0);      }
421                
422          rc = check_crypto_engine ();      /* Because write operations to the keyring result in a temporary
423          if (rc) {         file, we need at least 2 MB plus the size of the keyring for
424              DestroyWindow (hwnd);         free space. */
425              free_gnupg_table ();      pubring = get_gnupg_keyring (1);
426              return 0;      temp_size = get_file_size (pubring) + 2097152;
427          }      free_if_alloc (pubring);
428      }  
429        if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
430      if (start_gpgprefs)          caller.LowPart < temp_size) {
431      {          log_box ("WinPT Error", MB_ERR,
432          char *ring;                   "The mobile mode needs at least %lu KB for temporary files",
433          size_t size = 0;                   temp_size/1024);
434          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          return -1;
435                          gpgprefs_dlg_proc, NULL);      }
436          ring = get_gnupg_keyring (0, !NO_STRICT);  
437          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
438              first_start = 1; /* The keyring is empty! */  
439          free_if_alloc (ring);      return 0;
440      }  }
441    #endif
442      if (first_start) {  
443          struct key_wizard_s c, dummy;  
444  start:  /* Set the default keyserver for this instance. */
445          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,  void
446                          first_run_dlg_proc, (LPARAM)&dummy);  set_default_keyserver (void)
447          switch (dummy.interactive)  {
448          {      char *host = get_reg_entry_keyserver ("Default");
449          case SETUP_KEYGEN:      char *str_port = get_reg_entry_keyserver ("Default_Port");
450              c.interactive = 1;      WORD port = HKP_PORT;
451              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,  
452                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);      if (!host)
453              if (!rc)          keyserver_set_default (NULL, 0);
454                  goto start;      else {
455              break;          if (str_port && *str_port)
456                port = atoi (str_port);
457          case SETUP_IMPORT:          keyserver_set_default (host, port);
458              rc = gnupg_copy_keyrings ();      }
459              if (rc) {      free_if_alloc (host);
460                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      free_if_alloc (str_port);
461                  goto start;  }
462              }  
463              break;  
464    /* Display info message that WinPT is now in debug mode. */
465          case SETUP_EXISTING:  void
466              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  winpt_debug_msg (void)
467                              gpgprefs_dlg_proc, NULL);  {      
468              break;      char output[512];
469        char temp[128];
470          case -1:          
471              DestroyWindow (hwnd);      GetTempPath (DIM (temp) -1, temp);
472              free_gnupg_table ();      _snprintf (output, DIM (output)-1,
473              return 0;          "The GPGME output file is %sgpgme.dbg\n"
474          }          "The WinPT output file is %swinpt.log\n", temp, temp);
475          update_keycache (hwnd);      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
476          check_crypto_engine ();  }
477      }  
478      else {  
479          gpgme_keycache_t c;  /* Search for insecure ElGamal keys and return the
480          update_keycache (hwnd);     number of founded keys. */
481          c = keycache_get_ctx (1);  static int
482          if (!c || !gpgme_keycache_count (c)) {  count_insecure_elgkeys (void)
483              gnupg_display_error ();  {
484              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"      gpg_keycache_t pc;
485                               "Please check your GPG config (keyrings, pathes...)"),      gpgme_key_t key;
486                               _("WinPT Error"), MB_ERR);      int n = 0;
487              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"  
488                                    "Do you want to start the GPG preferences dialog?"),      pc = keycache_get_ctx (1);
489                              "WinPT", MB_INFO|MB_YESNO);      while (!gpg_keycache_next_key (pc, 0, &key)) {
490              if (ec == IDYES) {          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
491                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,              n++;
492                                  gpgprefs_dlg_proc, NULL);      }
493                  update_keycache (hwnd);      gpg_keycache_rewind (pc);
494              }      return n;
495              else {  }
496                  DestroyWindow (hwnd);  
497                  free_gnupg_table ();  
498                  return 0;  /* Main entry point. */
499              }  int WINAPI
500          }  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
501          if (check_default_key (c)) {  {
502              char * p = get_gnupg_default_key ();      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
503              log_box (_("WinPT Error"), MB_ERR,      HACCEL accel_tab;
504                       _("Default key from the GPG options file could not be found.\n"      MSG msg;
505                         "Please check your gpg.conf (options) to correct this:\n\n"      HWND hwnd = NULL;
506                         "%s: public key not found."), p? p : "[null]");      WORD ver[3], ptdver[4];
507              free_if_alloc (p);      const char *s;
508              DestroyWindow (hwnd);      int rc, ec, created = 0;
509              free_gnupg_table ();      int first_start = 0, start_gpgprefs = 0;
510              return 0;      int winpt_inst_found = 0;
511          }      int start_manager = 0;    
512          if (count_insecure_elgkeys ())  
513              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,  #ifdef WINPT_MOBILE
514                              elgamal_warn_dlg_proc, NULL);      /* Do not continue in case of problems. */
515      }      if (enable_mobile_mode ())
516            return 0;
517      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);  #endif
518      keyring_check_last_access (); /* init */  
519      while (GetMessage (&msg, hwnd, 0, 0)) {      glob_hinst = hinst;
520          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      if (cmdline && stristr (cmdline, "--stop")) {
521              TranslateMessage (&msg);          hwnd = FindWindow ("WinPT", "WinPT");
522              DispatchMessage (&msg);          if (hwnd != NULL)
523          }              PostMessage (hwnd, WM_DESTROY, 0, 0);
524      }          return 0;
525                }
526      return 0;  
527  } /* WinMain */  #ifdef _DEBUG
528        gpg_set_debug_mode (1);
529        debug = 1;
530    #endif
531    
532        get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
533        ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
534                                     &ptdver[2], &ptdver[3]);
535        
536        if (!ec && (ptdver[0] != ver[0] ||
537                    ptdver[1] != ver[1] ||
538                    ptdver[2] != ver[2])) {
539            log_box (_("WinPT Error"), MB_ERR,
540                     _("The PTD.dll file has a different version than WinPT.exe\n"
541                       "Please update the PTD.dll to version %d.%d.%d"),
542                       ver[0], ver[1], ver[2]);
543            return 0;
544        }
545    
546        if (gpg_md_selftest ()) {
547            msg_box (NULL, _("Cryptographic selftest failed."),
548                     _("WinPT Error"), MB_ERR);
549            return 0;
550        }
551    
552        s = gpgme_check_version (NEED_GPGME_VERSION);
553        if (!s || !*s) {
554            msg_box (NULL, _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
555                     _("WinPT Error"), MB_ERR);
556            return 0;
557        }
558    
559        CreateMutex (NULL, TRUE, PGM_NAME);
560        if (GetLastError () == ERROR_ALREADY_EXISTS)
561            winpt_inst_found = 1;
562        
563        set_default_keyserver ();
564        load_gettext ();
565        admin_user = user_is_admin ();
566    
567        regist_inst_gnupg (1);
568        regist_inst_winpt (1, &created);
569    
570        if (!created) {
571            memset (&reg_prefs, 0, sizeof (reg_prefs));
572            get_reg_winpt_prefs (&reg_prefs);
573            reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */
574            if (gnupg_load_config () == -2)
575                msg_box (NULL, _("The gpg.conf file contains the 'textmode' option\n"
576                                 "which leads to broken binary output during decryption.\n"
577                                 "If this is on purpose, just continue otherwise the option should be disabled."),
578                                _("WinPT Error"), MB_ERR);
579        }
580    
581        if (is_gpg4win_installed ())
582            load_gpg_env (); /* XXX: check return code. */
583    
584        rc = gnupg_check_homedir ();
585        if (rc) {
586            char *p;
587    
588            log_box (_("WinPT Error"), MB_ERR,
589                     _("GPG home directory is not set correctly.\n"
590                       "Please check the GPG registry settings:\n%s."),
591                     winpt_strerror (rc));
592            s = get_fileopen_dlg (GetActiveWindow (),
593                                  _("Select GPG Public Keyring"),
594                                  "GPG Keyrings (*.gpg)\0*.gpg\0\0",
595                                  NULL);
596            if (s != NULL && (p=strrchr (s, '\\'))) {
597                char *path = substr (s, 0, (p-s));
598    
599                set_reg_entry_gpg ("HomeDir", path);
600                free_if_alloc (path);
601            }
602            else {
603                msg_box (NULL, _("GPG home directory could not be determined."),
604                         _("WinPT Error"), MB_ERR);
605                goto start;
606            }
607        }
608    
609        rc = check_gnupg_prog ();
610        if (rc) {
611            if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"
612                                 "Do you want to start the GPG preferences to "
613                                 "correct  this problem?"), _("WinPT Error"),
614                                 MB_INFO|MB_YESNO) == IDYES)
615                start_gpgprefs = 1;
616            else {
617                msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
618                return 0;
619            }
620        }
621    
622        rc = gnupg_access_files ();
623        if (!start_gpgprefs && rc) {
624            if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
625                ec = msg_box (NULL,
626                    _("Could not access and/or find the public and secret keyring.\n"
627                      "If this is an accident, quit the program and fix it.\n\n"
628                      "Continue if you want WinPT to offer you more choices.\n"),
629                      "WinPT", MB_INFO|MB_YESNO);
630                if (ec == IDYES)
631                    first_start = 1;
632            }
633            if (!first_start) {
634                msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
635                return 0;
636            }
637        }
638        if (check_for_empty_keyrings (false))
639            first_start = 1;
640    
641        if (!first_start) {
642            rc = gpg_check_permissions (1);
643            if (rc && rc == 2) /* 2 means read-only mode. */
644                gpg_read_only = 1;
645            else if (rc)
646                return 0;
647        }
648        
649        init_gnupg_table ();
650    
651        if (fm_parse_command_line (cmdline) > 0) {
652            free_gnupg_table ();
653            return 0;
654        }
655    
656        if (cmdline && stristr (cmdline, "--wipe-freespace")) {
657            dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,
658                                GetDesktopWindow(), space_wipefrees_dlg_proc, 0,
659                                _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);
660            free_gnupg_table ();
661            return 0;
662        }
663    
664        load_keyserver_conf (cmdline? 1 : 0);
665    
666        if (cmdline && (stristr (cmdline, "--keymanager")
667                    || stristr (cmdline, "--cardmanager"))) {
668            /* If an instance of WinPT is running, just send the command
669               to open the key manager. Otherwise start a new instance. */
670            HWND tray = FindWindow ("WinPT", "WinPT");
671            if (stristr (cmdline, "keymanager"))
672                start_manager = ID_WINPT_KEY;
673            else
674                start_manager = ID_WINPT_CARD;
675            if (tray != NULL) {
676                PostMessage (tray, WM_COMMAND, start_manager, 0);
677                free_gnupg_table ();
678                return 0;
679            }
680        }
681    
682        /* If we found another WinPT instance, just quit to avoid it
683           will be executed twice. */
684        if (winpt_inst_found) {
685            log_debug ("%s", "WinMain: WinPT is already running.");
686            free_gnupg_table ();
687            return 0;
688        }
689    
690    #ifndef WINPT_MOBILE
691        if (cmdline && (stristr (cmdline, "--enable-debug") ||
692                        stristr (cmdline, "--debug"))) {
693            gpg_set_debug_mode (1);
694            winpt_debug_msg ();
695            debug = 1;
696        }
697    #endif
698    
699        wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));
700        rc = RegisterClass (&wc);
701        if (rc == FALSE) {
702            msg_box (NULL, _("Could not register window class"),
703                     _("WinPT Error"), MB_ERR);
704            free_gnupg_table ();
705            return 0;
706        }
707    
708        hwnd = CreateWindow (PGM_NAME,
709                             PGM_NAME,
710                             0, 0, 0, 0, 0,
711                             NULL,
712                             NULL,
713                             hinst,
714                             NULL);
715        if (hwnd == NULL) {
716            msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);
717            free_gnupg_table ();
718            return 0;
719        }
720        glob_hwnd = hwnd;
721        UpdateWindow (hwnd);
722    
723        if (!first_start && !start_gpgprefs) {
724            gnupg_backup_options ();        
725            if (!check_crypto_engine ()) {
726                DestroyWindow (hwnd);
727                free_gnupg_table ();
728                return 0;
729            }
730        }
731        
732        if (start_gpgprefs) {
733            DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
734                            gpgprefs_dlg_proc, 0);
735            if (check_for_empty_keyrings (true))
736                first_start = 1; /* The public keyring is empty. */
737        }
738    
739        if (first_start) {
740            struct genkey_s c;
741            int choice;
742            HWND h;
743    start:
744            h = GetDesktopWindow ();
745            if (!gpg_prefs_ok ())
746                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,
747                                gpgprefs_dlg_proc, 0);
748            choice = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,
749                                     first_run_dlg_proc, 0);
750            switch (choice) {
751            case SETUP_KEYGEN:
752                c.interactive = 1;
753                c.first_start = 1;
754                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,
755                                     h, keygen_wizard_dlg_proc, (LPARAM)&c);
756                if (!rc)
757                    goto start;
758                break;
759    
760            case SETUP_IMPORT:
761                rc = gnupg_copy_keyrings ();
762                if (rc) {
763                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
764                    goto start;
765                }
766                break;
767    
768            case SETUP_CARDGEN:
769                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_CARD_KEYGEN,
770                                     h, card_keygen_dlg_proc, 0);
771                if (!rc)
772                    goto start;
773                break;
774    
775            case 0: /* Cancel/Abort. */
776            default:
777                DestroyWindow (hwnd);
778                free_gnupg_table ();
779                return 0;
780            }
781            update_keycache (hwnd);
782            if (!check_crypto_engine ()) {
783                DestroyWindow (hwnd);
784                free_gnupg_table ();
785                keycache_release (1);
786                return 0;
787            }
788            if (!is_gpg4win_installed ()) {
789                select_language ();
790                load_gettext ();
791            }
792        }
793        else {
794            gpg_keycache_t c;
795            if (update_keycache (hwnd)) {
796                DestroyWindow (hwnd);
797                free_gnupg_table ();
798                keycache_release (1);
799                return 0;
800            }
801            /* XXX: rewrite this part. */
802            c = keycache_get_ctx (1);
803            if (!gpg_keycache_get_size (c)) {
804                msg_box (hwnd, _("The keycache was not initialized or is empty.\n"
805                                 "Please check your GPG config (keyrings, pathes...)"),
806                                 _("WinPT Error"), MB_ERR);
807                ec = msg_box (NULL, _("It seems that GPG is not configured properly.\n"
808                                      "Do you want to start the GPG preferences dialog?"),
809                                "WinPT", MB_INFO|MB_YESNO);
810                if (ec == IDYES) {
811                    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
812                                    gpgprefs_dlg_proc, 0);
813                    update_keycache (hwnd);
814                }
815                else {
816                    DestroyWindow (hwnd);
817                    free_gnupg_table ();
818                    keycache_release (1);
819                    return 0;
820                }
821            }      
822            if (check_default_key ()) {
823                char *p = get_gnupg_default_key ();
824                log_box (_("WinPT Error"), MB_ERR,
825                         _("Default key (from the GPG config file) could not be found or is unuseable.\n"
826                           "The default key will be resetted and can be set later in the Key Manager again.\n\n"
827                           "%s: secret key not found."), p? p : "?");
828                set_gnupg_default_key (NULL);
829                free_if_alloc (p);
830            }
831            if (count_insecure_elgkeys ())
832                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,
833                                elgamal_warn_dlg_proc, 0);
834        }
835    
836        if (start_manager)
837            PostMessage (hwnd, WM_COMMAND, start_manager, 0);
838    
839        accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);
840        keyring_check_last_access (); /* init */
841        while (GetMessage (&msg, hwnd, 0, 0)) {
842            if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {
843                TranslateMessage (&msg);
844                DispatchMessage (&msg);
845            }
846        }
847            
848        return 0;
849    }

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