/[winpt]/trunk/Src/WinPT.cpp
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revision 28 by twoaday, Thu Oct 20 12:35:59 2005 UTC revision 273 by twoaday, Fri Dec 8 10:22:17 2006 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   * You should have received a copy of the GNU General Public License
17   * along with WinPT; if not, write to the Free Software Foundation,   * along with WinPT; if not, write to the Free Software Foundation,
18   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19   */   */
20  #include <windows.h>  #ifdef HAVE_CONFIG_H
21    #include <config.h>
22  #include "../resource.h"  #endif
23  #include "wptTypes.h"  
24  #include "wptW32API.h"  #include <windows.h>
25  #include "wptVersion.h"  #include <shlobj.h>
26  #include "wptErrors.h"  
27  #include "wptGPG.h"  #include "resource.h"
28  #include "wptRegistry.h"  #include "wptTypes.h"
29  #include "wptCommonCtl.h"  #include "wptW32API.h"
30  #include "wptDlgs.h"  #include "wptVersion.h"
31  #include "wptNLS.h"  #include "wptErrors.h"
32  #include "wptKeyserver.h"  #include "wptGPG.h"
33  #include "wptCard.h"  #include "wptRegistry.h"
34  #include "wptFileManager.h"  #include "wptCommonCtl.h"
35  #include "wptContext.h"  #include "wptDlgs.h"
36  #include "wptCardEdit.h"  #include "wptNLS.h"
37    #include "wptKeyserver.h"
38  #define MIN_GPG_VER "1.4.3"  #include "wptCard.h"
39    #include "wptFileManager.h"
40  HINSTANCE glob_hinst;   /* global instance for the dialogs */  #include "wptContext.h"
41  HWND glob_hwnd;         /* global window handle for the dialogs */  #include "wptCardEdit.h"
42  HWND activ_hwnd;  #include "wptCrypto.h"
43  LOCK mo_file;  #include "wptUTF8.h"
44  int scard_support = 0;  
45  int debug = 0;  void remove_crit_file_attrs (const char *fname, int force);
46  int mobile = 0;  BOOL user_is_admin (void);
47  int gpg_read_only = 0;  int  pcsc_available (void);
48  char gpgver[3];  
49    /* Global variables. */
50    HINSTANCE glob_hinst;   /* global instance for the dialogs */
51  /* Load the key cache and rebuild the signature cache. */  HWND glob_hwnd;         /* global window handle for the dialogs */
52  static void  int scard_support = 0;
53  update_keycache (HWND hwnd)  int debug = 0;
54  {  int gpg_read_only = 0;
55      refresh_cache_s rcs = {0};  int admin_user = 0;
56      rcs.kr_reload = 0;  char gpgver[3];
57      rcs.kr_update = 1;  /* End */
58      rcs.tr_update = 1;  
59      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  
60                      keycache_dlg_proc, (LPARAM)&rcs);  /* Load the key cache and rebuild the signature cache. */
61  }  int
62    update_keycache (HWND hwnd)
63    {
64  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */      int err;
65  void      refresh_cache_s rcs;
66  gpg_set_debug_mode (int val)  
67  {            /* no need to rebuild the sig cache each time. */
68      if (val)      memset (&rcs, 0, sizeof (rcs));
69          putenv ("GPGME_DEBUG=5:gpgme.dbg");      rcs.kring_update = 1;
70      else      err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
71          putenv ("GPGME_DEBUG=");                      keycache_dlg_proc, (LPARAM)&rcs);
72  }      if (err) {
73            char *cfgf = get_gnupg_config ();
74  static char *          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
75  get_gettext_lang (void)              msg_box (NULL, _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
76  {              free_if_alloc (cfgf);
77      char * fname;          return -1;
78      fname = get_reg_entry_mo ();      }
79      if (!fname)      return 0;
80          return NULL;  }
81      return fname;  
82  } /* get_gettext_lang */  
83    /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
84    void
85  static void  gpg_set_debug_mode (int val)
86  load_gettext (void)  {
87  {      static char buf[256];
88      char *nls = NULL;      char tmp[128];
89      char *file = NULL;      
90        /* XXX: no gpgme.dbg is created. */
91      nls = get_gettext_lang ();      if (val > 0) {
92      if (nls) {          GetTempPath (DIM (tmp)-1, tmp);
93          set_gettext_file ("winpt", nls);          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
94          file = make_filename (nls, "winpt", "mo");          putenv (buf);
95          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {      }
96              msg_box (NULL, _("Could not initizalize file lock.\n"      else
97                               "Native Language Support"),          putenv ("GPGME_DEBUG=");
98                       _("WinPT Error"), MB_ERR);  }
99          }  
100          free_if_alloc (nls);  
101          free_if_alloc (file);  /* Initialize the gettext sub system. */
102      }  static void
103  } /* load_gettext */  load_gettext (void)
104    {
105        char *nls;
106  /* check if the default key from the gpg.conf file is available in the  
107     keyring. if not, bail out because encryption won't work properly then. */      /* Return the name of the gettext language file. */
108  static int      nls = get_reg_entry_mo ();
109  check_default_key (gpg_keycache_t kc)      if (nls != NULL) {
110  {          set_gettext_file ("winpt", nls);
111      gpgme_key_t key;          free_if_alloc (nls);
112      gpgme_error_t err = GPG_ERR_NO_ERROR;      }
113      char * defkey;  }
114    
115      defkey = get_gnupg_default_key ();  
116      if (defkey)  /* Return true if the GPG environment is useable. */
117          err = gpg_keycache_find_key (kc, defkey, 0, &key);  static bool
118      free_if_alloc (defkey);  gpg_prefs_ok (void)
119      return err? -1 : 0;  {
120  } /* check_default_key */      char *p;
121    
122        p = get_reg_entry_gpg4win ("gpg.exe");
123  /* Return the WinPT program file name (with full pathname). */      if (!p || file_exist_check (p) != 0) {
124  static const char *          free_if_alloc (p);
125  get_prog_part (const char * fname, int use_cwd)          p = get_reg_entry_gpg ("gpgProgram");
126  {          if (!p || file_exist_check (p) != 0) {
127      static char program[1024];              free_if_alloc (p);
128      char currdir[256], * cmd = NULL;              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
129      int j;              return false;
130                    }
131      memset (currdir, 0, DIM (currdir));      }
132      memset (program, 0, DIM (program));      free_if_alloc (p);
133                p = get_reg_entry_gpg4win (NULL);
134      if (use_cwd) {      if (!p || dir_exist_check (p) != 0) {
135          GetCurrentDirectory (DIM (currdir)-1, currdir);          free_if_alloc (p);
136          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);          p = get_reg_entry_gpg ("HomeDir");
137      }          if (!p || dir_exist_check (p) != 0) {
138      else {              free_if_alloc (p);
139          cmd = GetCommandLine ();              log_debug ("gpg_prefs_ok: could not determine home directory");
140          if (cmd == NULL)              return false;
141              return NULL;          }
142          strncpy (currdir, cmd, 255);      }
143          j = strlen (currdir);      free_if_alloc (p);
144          while (j--) {      return true;
145              if (currdir[j] == '\\')  }
146                  break;            
147          }  
148          currdir[j] = 0;  /* Check gpg files if they are read-only and ask the user
149          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);     if this should be corrected. */
150      }  static void
151      return program;  check_readonly_attr (const char *homedir)
152  } /* get_prog_part */  {
153        const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
154        char *file;
155  static int      int i;
156  check_crypto_engine (void)  
157  {      for (i=0; files[i] != NULL; i++) {
158      int ma=1, mi=4, pa=3; /* GPG 1.4.3 */          file = make_filename (homedir, files[i], NULL);
159      int rc;          remove_crit_file_attrs (file, 0);
160            free_if_alloc (file);
161      rc = check_gnupg_engine (&ma, &mi, &pa);      }
162      if (rc == -1) {  }
163          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);  
164          return rc;  
165      }  /* Load the GPG environment. On the first start, some
166      else if (rc) {     checks are performed to find out in what state GPG is.
167          log_box (_("WinPT Error"), MB_ERR,     Return value: 0  everything OK.
168                   _("Sorry, you need a newer GPG version.\n"                   >0  fatal error.
169                     "GPG version %d.%d.%d required GPG version "MIN_GPG_VER),                   -1 public keyring is empty or does not exist. */
170                     ma, mi, pa);  static int
171          return rc;  load_gpg_env (void)
172      }  {
173      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */      SECURITY_ATTRIBUTES sec_attr;
174      if (ma >= 1 && mi >= 4)      char *p;
175          scard_support = 1;      char *pkr;
176        int err = 0;
177      gpgver[0] = ma;  
178      gpgver[1] = mi;      p = get_reg_entry_gpg4win ("gpg.exe");
179      gpgver[2] = pa;      if (!p)
180      return rc;          return (1);
181  } /* check_crypto_engine */      if (file_exist_check (p)) {
182            free_if_alloc (p);
183            return (1);
184  static int      }
185  load_keyserver_conf (int quiet)      free_if_alloc (p);
186  {  
187      const char * t;      p = get_reg_entry_gpg ("HomeDir");
188      int rc;      if (!p || dir_exist_check (p) != 0) {
189            free_if_alloc (p);
190      if (reg_prefs.kserv_conf)          p = multi_gnupg_path (0);
191          t = reg_prefs.kserv_conf;      }
192      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))      if (p && dir_exist_check (p)) {
193          t = get_prog_part ("keyserver.conf", 0);          memset (&sec_attr, 0, sizeof (sec_attr));
194      else          sec_attr.nLength = sizeof (sec_attr);
195          t = "keyserver.conf";          if (!CreateDirectory (p, &sec_attr)) {
196      rc = kserver_load_conf (t);              msg_box (NULL, _("Could not create GPG home directory"),
197      if (rc && !quiet)                       _("WinPT Error"), MB_ERR);
198          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);              free_if_alloc (p);
199      return rc;              return (2);
200  }          }
201        }
202        check_readonly_attr (p);
203  static void      pkr = make_filename (p, "pubring", "gpg");
204  enable_mobile_mode (void)      free_if_alloc (p);
205  {      if (get_file_size (pkr) == 0)
206      memset (&reg_prefs, 0, sizeof (reg_prefs));          err = -1;
207      reg_prefs.always_trust = 0;      free_if_alloc (pkr);
208      reg_prefs.auto_backup = 0;      return err;
209      reg_prefs.cache_time = 0;  }
210      reg_prefs.expert = 0;  
211      reg_prefs.keylist_mode = 1;  
212      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");  /* check if the default key from the gpg.conf file is available in the
213      reg_prefs.no_zip_mmedia = 1;     keyring. if not, bail out because encryption won't work properly then. */
214      reg_prefs.use_tmpfiles = 1;  static int
215      reg_prefs.word_wrap = 80;  check_default_key (void)
216      reg_prefs.use_viewer = 0; /* XXX */  {
217  }      gpgme_key_t key;
218        gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
219  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);      gpg_keycache_t kc;
220        char *defkey;
221    
222  int WINAPI      kc = keycache_get_ctx (0);
223  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)      defkey = get_gnupg_default_key ();
224  {      if (defkey) {
225      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};          err = gpg_keycache_find_key (kc, defkey, 0, &key);
226      HACCEL accel_tab;          if (err) {
227      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;              free_if_alloc (defkey);
228      int first_start = 0, start_gpgprefs = 0;              return -1;
229      const char * s;          }
230      MSG msg;      }
231      HWND hwnd = NULL;      else {
232            /* Actually this is just a warning but we still continue. */
233      glob_hinst = hinst;          msg_box (NULL, _("No useable secret key found."),
234                     _("WinPT Warning"), MB_WARN);
235      #ifdef _DEBUG          free_if_alloc (defkey);
236      gpg_set_debug_mode (1);          return 0;
237      debug = 1;      }
238      #endif  
239        /* Because the secret key listing has no information
240      s = PTD_get_version ();         about the validity/status, we need to check the public key. */
241      if (strcmp (s, "0.8.0")) {      kc = keycache_get_ctx (1);
242          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
243                   _("Please update your PTD.dll to the newest version, "          (key->revoked || key->expired)) {
244                     "the version (%s) you use is too old."), s);          msg_box (NULL, _("Default secret key is unuseable"),
245          return 0;                   _("WinPT Warning"), MB_ERR);
246      }          free_if_alloc (defkey);
247            return -1;
248      if (gpg_md_selftest ()) {      }
249          msg_box (NULL, _("Cryptographic selftest failed."),      free_if_alloc (defkey);
250                   _("WinPT Error"), MB_ERR);      return 0;
251          return 0;  }
252      }  
253    
254      s = gpgme_check_version ("1.1.0");  /* Return the WinPT program file name (with full pathname). */
255      if (!s || !*s) {  static const char*
256          msg_box (NULL, _("A newer GPGME version is needed."), "WinPT Error", MB_ERR);  get_prog_part (const char *fname, int use_cwd)
257          return 0;  {
258      }      static char program[2*MAX_PATH+1];
259        char currdir[MAX_PATH+1];
260      if (cmdline && stristr (cmdline, "--mobile")) {      char *cmd = NULL;
261          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!",      int j;
262                   "WinPT", MB_INFO);          
263          mobile = 1;      memset (currdir, 0, DIM (currdir));
264      }      memset (program, 0, DIM (program));
265            
266      set_default_kserver ();      if (use_cwd) {
267            GetCurrentDirectory (DIM (currdir)-1, currdir);
268      if (!mobile) {          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
269          regist_inst_gnupg (1);      }
270          regist_inst_winpt (1, &created);      else {
271      }          cmd = GetCommandLine ();
272      else {          if (!cmd)
273          enable_mobile_mode ();              return NULL;
274          /* XXX: ask for GPG path */          strncpy (currdir, cmd, DIM (currdir)-1);
275          created = 1; /* Disable registry writing */          j = strlen (currdir);
276      }          while (j--) {
277                if (currdir[j] == '\\')
278      if (!created) {                  break;
279          memset (&reg_prefs, 0, sizeof (reg_prefs));          }
280          reg_prefs.use_tmpfiles = 1; /* default */          currdir[j] = 0;
281          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
282          get_reg_winpt_prefs (&reg_prefs);      }
283          if (!reg_prefs.no_hotkeys)      return program;
284              hotkeys_modify ();  }
285      }  
286    
287      rc = gnupg_check_homedir ();  /* Check that the underlying crypto engine fullfills the minimal
288      if (rc) {     requirements so all commands work properly. */
289          log_box (_("WinPT Error"), MB_ERR,  static bool
290                   _("GPG home directory is not set correctly.\n"  check_crypto_engine (void)
291                     "Please check the GPG registry settings:\n%s."),  {
292                   winpt_strerror (rc));      int ma = 0, mi = 0, pa = 0;
293          const char * s = get_fileopen_dlg (GetActiveWindow (),      int rc;
294                                             _("Select GPG Public Keyring"),  
295                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
296                                             NULL);      if (rc == -1) {
297          if (s != NULL) {          msg_box (NULL, _("Could not read GnuPG version."),
298              size_t n;                   _("WinPT Error"), MB_ERR);
299              char * p = strrchr (s, '\\');          return false;
300              if (!p)      }
301                  BUG (0);      else if (rc) {
302              n = p - s;          log_box (_("WinPT Error"), MB_ERR,
303              if (n)                   _("Sorry, you need a newer GPG version.\n"
304              {                     "GPG version %d.%d.%d required GPG version "NEED_GPG_VERSION),
305                  char * file = new char[n+1];                     ma, mi, pa);
306                  if (!file)          return false;
307                      BUG (NULL);      }
308                  memset (file, 0, n);      /* Enable smart card support for GPG 2 or >= 1.4 */
309                  memcpy (file, s, n);      if ((ma > 1 || pa >= 4) && pcsc_available ())
310                  file[n] = '\0';                  scard_support = 1;
311                  set_reg_entry_gpg ("HomeDir", file);  
312                  free_if_alloc (file);      gpgver[0] = ma;
313                  gnupg_check_homedir (); /* change gpgProgram if needed */      gpgver[1] = mi;
314              }      gpgver[2] = pa;
315          }      return true;
316          else {  }
317              msg_box (NULL, _("GPG home directory could not be determited."),  
318                       _("WinPT Error"), MB_ERR);  
319              goto start;  /* Try to load the keyserver config file. If @quiet is 1
320          }     do not show any errors. */
321      }  static int
322    load_keyserver_conf (int quiet)
323      rc = check_gnupg_prog ();  {    
324      if (rc) {      const char *t, *conf;
325          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"      char *buf;
326                               "Do you want to start the GPG preferences to "      int rc;
327                               "correct  this problem?"), _("WinPT Error"),  
328                               MB_INFO|MB_YESNO) == IDYES)      #ifdef WINPT_MOBILE
329              start_gpgprefs = 1;      /* In mobile mode we automatically assume the config file
330          else         in the current directory. */
331          {      return kserver_load_conf ("keyserver.conf");
332              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      #endif
333              return 0;  
334          }      /* Create $APPDATA\winpt if needed. */
335      }      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
336        if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
337      rc = gnupg_access_files ();          MessageBox (NULL, _("Failed to create WinPT directory"),
338      if (!start_gpgprefs && rc)                      _("Keyserver"), MB_ERR);
339      {          free_if_alloc (buf);
340          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)          return -1;
341          {      }
342              ec = msg_box (NULL,      free_if_alloc (buf);
343                  _("Could not access and/or find the public and secret keyring.\n"  
344                    "If this is an accident, quit the program and fix it.\n\n"      /* Check for $APPDATA\winpt\keyserver.conf */
345                    "Continue if you want that WinPT offers you more choices.\n"),      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
346                    "WinPT", MB_INFO|MB_YESNO);  
347              if (ec == IDYES)      conf = get_prog_part ("keyserver.conf", 0);
348                  first_start = 1;      if (!file_exist_check (conf))
349          }          t = conf;
350          if (!first_start)      else
351          {          t = "keyserver.conf";
352              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
353              return 0;          if (!CopyFile (t, buf, FALSE)) {
354          }              MessageBox (NULL, _("Failed to copy the keyserver.conf"),
355      }                          _("Keyserver"), MB_ERR);
356                free_if_alloc (buf);
357      if (!first_start)              return -1;
358      {          }
359          rc = gpg_check_permissions (1);          t = buf;
360          if (rc && rc == 2)      }
361              gpg_read_only = 1;      else
362          else if (rc)          t = buf;
363              return 0;      
364      }      rc = kserver_load_conf (t);
365        if (rc && !quiet)
366      load_gettext ();          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
367      init_gnupg_table ();      else {
368            free_if_alloc (reg_prefs.kserv_conf);
369      nfiles = fm_parse_command_line (cmdline);          reg_prefs.kserv_conf = m_strdup (t);
370      if (nfiles > 0)      }
371          return 0;      free_if_alloc (buf);
372        return rc;
373      if (cmdline && stristr (cmdline, "--wipe-freespace")) {  }
374          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,  
375                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,  
376                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);  /* Check if both keyrings are empty. This indicates that
377          free_gnupg_table ();     WinPT should offer to generate a key pair. */
378          return 0;  static bool
379      }  check_for_empty_keyrings (bool pub_only)
380    {
381      load_keyserver_conf (cmdline? 1 : 0);      char *p;
382        int n = 0;
383      if (cmdline && (stristr (cmdline, "--keymanager")  
384                  || stristr (cmdline, "--cardmanager"))) {      p = get_gnupg_keyring (1, 0);
385          update_keycache (GetDesktopWindow ());      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
386          if (stristr (cmdline, "keymanager"))          n++;
387              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      free_if_alloc (p);
388                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      if (pub_only)
389                              _("Key Manager"), IDS_WINPT_KEYMISC);            return n == 1? true : false;
390          else {      p = get_gnupg_keyring (0, 0);
391              gpg_card_t crd = gpg_card_load ();      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
392              if (crd)          n++;
393                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      free_if_alloc (p);
394                                    GetDesktopWindow(), card_edit_dlg_proc,      return n==2? true : false;
395                                    (LPARAM)crd, _("Card Manager"),  }
396                                    IDS_WINPT_CARD_EDIT);  
397              gpg_card_release (crd);  
398          }  #ifdef WINPT_MOBILE
399          keycache_release (0);  /* Enable the mobile mode if possible.
400          free_gnupg_table ();     There are some constraints which must be fullfilled.
401          return 0;     Return value: 0 on success. */
402      }  static int
403    enable_mobile_mode (void)
404      CreateMutex (NULL, TRUE, PGM_NAME);  {
405      if (GetLastError () == ERROR_ALREADY_EXISTS) {      static const char *test_fname = "winpt_mobile_test.txt";
406          free_gnupg_table ();      FILE *fp;
407          return 0;      char *pubring;
408      }      ULARGE_INTEGER caller, total;
409        DWORD temp_size;
410      if (cmdline) {  
411          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      fp = fopen (test_fname, "wb");
412              gpg_set_debug_mode (1);      if (fp == NULL) {
413              winpt_debug_msg ();          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
414              debug = 1;                            "for the current directory", "WinPT Error", MB_ERR);
415          }              
416      }          return -1;
417        }
418      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      fclose (fp);
419      rc = RegisterClass (&wc);      DeleteFile (test_fname);
420      if (rc == FALSE) {      if (file_exist_check ("gpg.exe")) {
421          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);          MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
422          free_gnupg_table ();                            "as the WinPT program", "WinPT Error", MB_ERR);
423          return 0;          return -1;
424      }      }
425        
426      hwnd = CreateWindow (PGM_NAME,      /* Because write operations to the keyring result in a temporary
427                           PGM_NAME,         file, we need at least 2 MB plus the size of the keyring for
428                           0, 0, 0, 0, 0,         free space. */
429                           NULL,      pubring = get_gnupg_keyring (1);
430                           NULL,      temp_size = get_file_size (pubring) + 2097152;
431                           hinst,      free_if_alloc (pubring);
432                           NULL);  
433      if (hwnd == NULL) {      if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
434          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);          caller.LowPart < temp_size) {
435          free_gnupg_table ();          log_box ("WinPT Error", MB_ERR,
436          return 0;                   "The mobile mode needs at least %lu KB for temporary files",
437      }                   temp_size/1024);
438      glob_hwnd = hwnd;          return -1;
439      UpdateWindow (hwnd);      }
440    
441      if (!first_start && !start_gpgprefs) {      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
442          gnupg_backup_options ();          
443          rc = check_crypto_engine ();      return 0;
444          if (rc) {  }
445              DestroyWindow (hwnd);  #endif
446              free_gnupg_table ();  
447              return 0;  
448          }  /* Set the default keyserver for this instance. */
449      }  void
450        set_default_keyserver (void)
451      if (start_gpgprefs) {  {
452          char *ring;      char *host = get_reg_entry_keyserver ("Default");
453          size_t size = 0;      char *str_port = get_reg_entry_keyserver ("Default_Port");
454          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      WORD port = HKP_PORT;
455                          gpgprefs_dlg_proc, NULL);  
456          ring = get_gnupg_keyring (0, !NO_STRICT);      if (!host)
457          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)          keyserver_set_default (NULL, 0);
458              first_start = 1; /* The keyring is empty! */      else {
459          free_if_alloc (ring);          if (str_port && *str_port)
460      }              port = atoi (str_port);
461            keyserver_set_default (host, port);
462      if (first_start) {      }
463          struct first_start_s fs;      free_if_alloc (host);
464          struct genkey_s c;      free_if_alloc (str_port);
465          HWND h;  }
466  start:  
467          h = GetDesktopWindow ();  
468          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,  /* Display info message that WinPT is now in debug mode. */
469                              gpgprefs_dlg_proc, NULL);  void
470          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,  winpt_debug_msg (void)
471                          first_run_dlg_proc, (LPARAM)&fs);  {      
472          switch (fs.choice) {      char output[512];
473          case SETUP_KEYGEN:      char temp[128];
474              c.interactive = 1;          
475              c.first_start = 1;      GetTempPath (DIM (temp) -1, temp);
476              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,      _snprintf (output, DIM (output)-1,
477                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);          "The GPGME output file is %sgpgme.dbg\n"
478              if (!rc)          "The WinPT output file is %swinpt.log\n", temp, temp);
479                  goto start;      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
480              break;  }
481    
482          case SETUP_IMPORT:  
483              rc = gnupg_copy_keyrings ();  /* Search for insecure ElGamal keys and return the
484              if (rc) {     number of founded keys. */
485                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  static int
486                  goto start;  count_insecure_elgkeys (void)
487              }  {
488              break;      gpg_keycache_t pc;
489        gpgme_key_t key;
490          case -1:      int n = 0;
491              DestroyWindow (hwnd);  
492              free_gnupg_table ();      pc = keycache_get_ctx (1);
493              return 0;      while (!gpg_keycache_next_key (pc, 0, &key)) {
494          }          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
495          update_keycache (hwnd);              n++;
496          check_crypto_engine ();      }
497      }      gpg_keycache_rewind (pc);
498      else {      return n;
499          gpg_keycache_t c;  }
500          update_keycache (hwnd);  
501          c = keycache_get_ctx (1);  
502          if (!c || !gpg_keycache_get_size (c)) {  /* Main entry point. */
503              gnupg_display_error ();  int WINAPI
504              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
505                               "Please check your GPG config (keyrings, pathes...)"),  {
506                               _("WinPT Error"), MB_ERR);      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
507              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"      HACCEL accel_tab;
508                                    "Do you want to start the GPG preferences dialog?"),      MSG msg;
509                              "WinPT", MB_INFO|MB_YESNO);      HWND hwnd = NULL;
510              if (ec == IDYES) {      WORD ver[3], ptdver[4];
511                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      const char *s;
512                                  gpgprefs_dlg_proc, NULL);      int rc, ec, created = 0;
513                  update_keycache (hwnd);      int first_start = 0, start_gpgprefs = 0;
514              }      int winpt_inst_found = 0;
515              else {      int start_manager = 0;    
516                  DestroyWindow (hwnd);  
517                  free_gnupg_table ();  #ifdef WINPT_MOBILE
518                  return 0;      /* Do not continue in case of problems. */
519              }      if (enable_mobile_mode ())
520          }          return 0;
521          if (check_default_key (c)) {  #endif
522              char * p = get_gnupg_default_key ();  
523              log_box (_("WinPT Error"), MB_ERR,      glob_hinst = hinst;
524                       _("Default key from the GPG options file could not be found.\n"      if (cmdline && stristr (cmdline, "--stop")) {
525                         "Please check your gpg.conf (options) to correct this:\n\n"          hwnd = FindWindow ("WinPT", "WinPT");
526                         "%s: public key not found."), p? p : "[null]");          if (hwnd != NULL)
527              free_if_alloc (p);              PostMessage (hwnd, WM_DESTROY, 0, 0);
528              DestroyWindow (hwnd);          return 0;
529              free_gnupg_table ();      }
530              return 0;  
531          }      #ifdef _DEBUG
532          if (count_insecure_elgkeys ())      gpg_set_debug_mode (1);
533              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,      debug = 1;
534                              elgamal_warn_dlg_proc, NULL);      #endif
535      }  
536        get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
537      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
538      keyring_check_last_access (); /* init */                                   &ptdver[2], &ptdver[3]);
539      while (GetMessage (&msg, hwnd, 0, 0)) {      
540          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      if (!ec && (ptdver[0] != ver[0] ||
541              TranslateMessage (&msg);                  ptdver[1] != ver[1] ||
542              DispatchMessage (&msg);                  ptdver[2] != ver[2])) {
543          }          log_box (_("WinPT Error"), MB_ERR,
544      }                   _("The PTD.dll file has a different version than WinPT.exe\n"
545                               "Please update the PTD.dll to version %d.%d.%d"),
546      return 0;                     ver[0], ver[1], ver[2]);
547  } /* WinMain */          return 0;
548        }
549    
550        if (gpg_md_selftest ()) {
551            msg_box (NULL, _("Cryptographic selftest failed."),
552                     _("WinPT Error"), MB_ERR);
553            return 0;
554        }
555    
556        s = gpgme_check_version (NEED_GPGME_VERSION);
557        if (!s || !*s) {
558            msg_box (NULL, _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
559                     _("WinPT Error"), MB_ERR);
560            return 0;
561        }
562    
563        CreateMutex (NULL, TRUE, PGM_NAME);
564        if (GetLastError () == ERROR_ALREADY_EXISTS)
565            winpt_inst_found = 1;
566        
567        set_default_keyserver ();
568        load_gettext ();
569        admin_user = user_is_admin ();
570    
571        regist_inst_gnupg (1);
572        regist_inst_winpt (1, &created);
573    
574        if (!created) {
575            memset (&reg_prefs, 0, sizeof (reg_prefs));
576            get_reg_winpt_prefs (&reg_prefs);
577            reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */
578            if (gnupg_load_config () == -2)
579                msg_box (NULL, _("The gpg.conf file contains the 'textmode' option\n"
580                                 "which leads to broken binary output during decryption.\n"
581                                 "If this is on purpose, just continue otherwise the option should be disabled."),
582                                _("WinPT Error"), MB_ERR);
583        }
584    
585        if (is_gpg4win_installed ())
586            load_gpg_env (); /* XXX: check return code. */
587    
588        rc = gnupg_check_homedir ();
589        if (rc) {
590            char *p;
591    
592            log_box (_("WinPT Error"), MB_ERR,
593                     _("GPG home directory is not set correctly.\n"
594                       "Please check the GPG registry settings:\n%s."),
595                     winpt_strerror (rc));
596            s = get_fileopen_dlg (GetActiveWindow (),
597                                  _("Select GPG Public Keyring"),
598                                  "GPG Keyrings (*.gpg)\0*.gpg\0\0",
599                                  NULL);
600            if (s != NULL && (p=strrchr (s, '\\'))) {
601                char *path = substr (s, 0, (p-s));
602    
603                set_reg_entry_gpg ("HomeDir", path);
604                free_if_alloc (path);
605            }
606            else {
607                msg_box (NULL, _("GPG home directory could not be determined."),
608                         _("WinPT Error"), MB_ERR);
609                goto start;
610            }
611        }
612    
613        rc = check_gnupg_prog ();
614        if (rc) {
615            if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"
616                                 "Do you want to start the GPG preferences to "
617                                 "correct  this problem?"), _("WinPT Error"),
618                                 MB_INFO|MB_YESNO) == IDYES)
619                start_gpgprefs = 1;
620            else {
621                msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
622                return 0;
623            }
624        }
625    
626        rc = gnupg_access_files ();
627        if (!start_gpgprefs && rc) {
628            if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
629                ec = msg_box (NULL,
630                    _("Could not access and/or find the public and secret keyring.\n"
631                      "If this is an accident, quit the program and fix it.\n\n"
632                      "Continue if you want WinPT to offer you more choices.\n"),
633                      "WinPT", MB_INFO|MB_YESNO);
634                if (ec == IDYES)
635                    first_start = 1;
636            }
637            if (!first_start) {
638                msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
639                return 0;
640            }
641        }
642        if (check_for_empty_keyrings (false))
643            first_start = 1;
644    
645        if (!first_start) {
646            rc = gpg_check_permissions (1);
647            if (rc && rc == 2) /* 2 means read-only mode. */
648                gpg_read_only = 1;
649            else if (rc)
650                return 0;
651        }
652        
653        init_gnupg_table ();
654    
655        if (fm_parse_command_line (cmdline) > 0) {
656            free_gnupg_table ();
657            return 0;
658        }
659    
660        if (cmdline && stristr (cmdline, "--wipe-freespace")) {
661            dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,
662                                GetDesktopWindow(), space_wipefrees_dlg_proc, 0,
663                                _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);
664            free_gnupg_table ();
665            return 0;
666        }
667    
668        load_keyserver_conf (cmdline? 1 : 0);
669    
670        if (cmdline && (stristr (cmdline, "--keymanager")
671                    || stristr (cmdline, "--cardmanager"))) {
672            /* If an instance of WinPT is running, just send the command
673               to open the key manager. Otherwise start a new instance. */
674            HWND tray = FindWindow ("WinPT", "WinPT");
675            if (stristr (cmdline, "keymanager"))
676                start_manager = ID_WINPT_KEY;
677            else
678                start_manager = ID_WINPT_CARD;
679            if (tray != NULL) {
680                PostMessage (tray, WM_COMMAND, start_manager, 0);
681                free_gnupg_table ();
682                return 0;
683            }
684        }
685    
686        /* If we found another WinPT instance, just quit to avoid it
687           will be executed twice. */
688        if (winpt_inst_found) {
689            log_debug ("%s", "WinMain: WinPT is already running.");
690            free_gnupg_table ();
691            return 0;
692        }
693    
694        #ifndef WINPT_MOBILE
695        if (cmdline && (stristr (cmdline, "--enable-debug") ||
696                        stristr (cmdline, "--debug"))) {
697            gpg_set_debug_mode (1);
698            winpt_debug_msg ();
699            debug = 1;
700        }
701        #endif
702    
703        wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));
704        rc = RegisterClass (&wc);
705        if (rc == FALSE) {
706            msg_box (NULL, _("Could not register window class"),
707                     _("WinPT Error"), MB_ERR);
708            free_gnupg_table ();
709            return 0;
710        }
711    
712        hwnd = CreateWindow (PGM_NAME,
713                             PGM_NAME,
714                             0, 0, 0, 0, 0,
715                             NULL,
716                             NULL,
717                             hinst,
718                             NULL);
719        if (hwnd == NULL) {
720            msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);
721            free_gnupg_table ();
722            return 0;
723        }
724        glob_hwnd = hwnd;
725        UpdateWindow (hwnd);
726    
727        if (!first_start && !start_gpgprefs) {
728            gnupg_backup_options ();        
729            if (!check_crypto_engine ()) {
730                DestroyWindow (hwnd);
731                free_gnupg_table ();
732                return 0;
733            }
734        }
735        
736        if (start_gpgprefs) {
737            DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
738                            gpgprefs_dlg_proc, 0);
739            if (check_for_empty_keyrings (true))
740                first_start = 1; /* The public keyring is empty. */
741        }
742    
743        if (first_start) {
744            struct genkey_s c;
745            int choice;
746            HWND h;
747    start:
748            h = GetDesktopWindow ();
749            if (!gpg_prefs_ok ())
750                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,
751                                gpgprefs_dlg_proc, 0);
752            choice = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,
753                                     first_run_dlg_proc, 0);
754            switch (choice) {
755            case SETUP_KEYGEN:
756                c.interactive = 1;
757                c.first_start = 1;
758                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,
759                                     h, keygen_wizard_dlg_proc, (LPARAM)&c);
760                if (!rc)
761                    goto start;
762                break;
763    
764            case SETUP_IMPORT:
765                rc = gnupg_copy_keyrings ();
766                if (rc) {
767                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
768                    goto start;
769                }
770                break;
771    
772            case SETUP_CARDGEN:
773                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_CARD_KEYGEN,
774                                     h, card_keygen_dlg_proc, 0);
775                if (!rc)
776                    goto start;
777                break;
778    
779            case 0: /* Cancel/Abort. */
780            default:
781                DestroyWindow (hwnd);
782                free_gnupg_table ();
783                return 0;
784            }
785            update_keycache (hwnd);
786            if (!check_crypto_engine ()) {
787                DestroyWindow (hwnd);
788                free_gnupg_table ();
789                keycache_release (1);
790                return 0;
791            }
792            if (!is_gpg4win_installed ()) {
793                select_language ();
794                load_gettext ();
795            }
796        }
797        else {
798            gpg_keycache_t c;
799            if (update_keycache (hwnd)) {
800                DestroyWindow (hwnd);
801                free_gnupg_table ();
802                keycache_release (1);
803                return 0;
804            }
805            /* XXX: rewrite this part. */
806            c = keycache_get_ctx (1);
807            if (!gpg_keycache_get_size (c)) {
808                msg_box (hwnd, _("The keycache was not initialized or is empty.\n"
809                                 "Please check your GPG config (keyrings, pathes...)"),
810                                 _("WinPT Error"), MB_ERR);
811                ec = msg_box (NULL, _("It seems that GPG is not configured properly.\n"
812                                      "Do you want to start the GPG preferences dialog?"),
813                                "WinPT", MB_INFO|MB_YESNO);
814                if (ec == IDYES) {
815                    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
816                                    gpgprefs_dlg_proc, 0);
817                    update_keycache (hwnd);
818                }
819                else {
820                    DestroyWindow (hwnd);
821                    free_gnupg_table ();
822                    keycache_release (1);
823                    return 0;
824                }
825            }      
826            if (check_default_key ()) {
827                char *p = get_gnupg_default_key ();
828                log_box (_("WinPT Error"), MB_ERR,
829                         _("Default key (from the GPG config file) could not be found or is unuseable.\n"
830                           "The default key will be resetted and can be set later in the Key Manager again.\n\n"
831                           "%s: secret key not found."), p? p : "?");
832                set_gnupg_default_key (NULL);
833                free_if_alloc (p);
834            }
835            if (count_insecure_elgkeys ())
836                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,
837                                elgamal_warn_dlg_proc, 0);
838        }
839    
840        if (start_manager)
841            PostMessage (hwnd, WM_COMMAND, start_manager, 0);
842    
843        accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);
844        keyring_check_last_access (); /* init */
845        while (GetMessage (&msg, hwnd, 0, 0)) {
846            if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {
847                TranslateMessage (&msg);
848                DispatchMessage (&msg);
849            }
850        }
851            
852        return 0;
853    }

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