/[winpt]/trunk/Src/WinPT.cpp
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revision 22 by twoaday, Wed Aug 10 11:33:35 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>  #include <windows.h>
21    #include <shlobj.h>
22  #include "../resource.h"  
23  #include "wptTypes.h"  #include "resource.h"
24  #include "wptW32API.h"  #include "wptTypes.h"
25  #include "wptVersion.h"  #include "wptW32API.h"
26  #include "wptErrors.h"  #include "wptVersion.h"
27  #include "wptGPG.h"  #include "wptErrors.h"
28  #include "wptRegistry.h"  #include "wptGPG.h"
29  #include "wptCommonCtl.h"  #include "wptRegistry.h"
30  #include "wptDlgs.h"  #include "wptCommonCtl.h"
31  #include "wptNLS.h"  #include "wptDlgs.h"
32  #include "wptKeyserver.h"  #include "wptNLS.h"
33  #include "wptCard.h"  #include "wptKeyserver.h"
34  #include "wptFileManager.h"  #include "wptCard.h"
35  #include "wptContext.h"  #include "wptFileManager.h"
36    #include "wptContext.h"
37  HINSTANCE glob_hinst; /* global instance for the dialogs */  #include "wptCardEdit.h"
38  HWND glob_hwnd; /* global window handle for the dialogs */  #include "wptCrypto.h"
39  HWND activ_hwnd;  #include "wptUTF8.h"
40  LOCK mo_file;  
41  int scard_support = 0;  void remove_crit_file_attrs (const char *fname, int force);
42  int debug = 0;  BOOL user_is_admin (void);
43  int mobile = 0;  int  pcsc_available (void);
44  int gpg_read_only = 0;  
45  char gpgver[3];  /* Global variables. */
46    HINSTANCE glob_hinst;   /* global instance for the dialogs */
47  /* Internal IPC */  HWND glob_hwnd;         /* global window handle for the dialogs */
48  int start_keymanager = 0;  int scard_support = 0;
49    int debug = 0;
50  static void  int gpg_read_only = 0;
51  update_keycache (HWND hwnd)  int admin_user = 0;
52  {  char gpgver[3];
53      refresh_cache_s rcs = {0};  /* End */
54      rcs.kr_reload = 0;  
55      rcs.kr_update = 1;  
56      rcs.tr_update = 1;  /* Load the key cache and rebuild the signature cache. */
57      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  int
58                      keycache_dlg_proc, (LPARAM)&rcs);  update_keycache (HWND hwnd)
59  } /* update_keycache */  {
60        int err;
61        refresh_cache_s rcs;
62  static char *  
63  get_gettext_lang (void)      /* no need to rebuild the sig cache each time. */
64  {          memset (&rcs, 0, sizeof (rcs));
65      char * fname;      rcs.kring_update = 1;
66      fname = get_reg_entry_mo ();      err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
67      if (!fname)                      keycache_dlg_proc, (LPARAM)&rcs);
68          return NULL;      if (err) {
69      return fname;          char *cfgf = get_gnupg_config ();
70  } /* get_gettext_lang */          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            free_if_alloc (cfgf);
73  static void          return -1;
74  load_gettext (void)      }
75  {      return 0;
76      char * nls = NULL;  }
77      char * file = NULL;  
78    
79      nls = get_gettext_lang ();  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
80      if (nls) {  void
81          set_gettext_file ("winpt", nls);  gpg_set_debug_mode (int val)
82          file = make_filename (nls, "winpt", "mo");  {
83          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {      static char buf[256];
84              msg_box (NULL, _("Could not initizalize file lock.\n"      char tmp[128];
85                               "Native Language Support"),      
86                       _("WinPT Error"), MB_ERR);      /* XXX: no gpgme.dbg is created. */
87          }      if (val > 0) {
88          free_if_alloc (nls);          GetTempPath (DIM (tmp)-1, tmp);
89          free_if_alloc (file);          _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
90      }          putenv (buf);
91  } /* load_gettext */      }
92        else
93            putenv ("GPGME_DEBUG=");
94  /* check if the default key from the gpg.conf file is available in the  }
95     keyring. if not, bail out because encryption won't work properly then. */  
96  static int  
97  check_default_key (gpgme_keycache_t kc)  /* Initialize the gettext sub system. */
98  {  static void
99      gpgme_key_t key;  load_gettext (void)
100      gpgme_error_t err = GPGME_No_Error;  {
101      char * defkey;      char *nls;
102    
103      defkey = get_gnupg_default_key ();      /* Return the name of the gettext language file. */
104      if (defkey)      nls = get_reg_entry_mo ();
105          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      if (nls != NULL) {
106      free_if_alloc (defkey);          gettext_set_file ("winpt", nls);
107      return err? -1 : 0;          free_if_alloc (nls);
108  } /* check_default_key */      }
109    }
110    
111  /* Return the WinPT program file name (with full pathname). */  
112  static const char *  /* Return true if the GPG environment is useable. */
113  get_prog_part (const char * fname, int use_cwd)  static bool
114  {  gpg_prefs_ok (void)
115      static char program[1024];  {
116      char currdir[256], * cmd = NULL;      char *p;
117      int j;  
118                p = get_reg_entry_gpg4win ("gpg.exe");
119      memset (currdir, 0, DIM (currdir));      if (!p || file_exist_check (p) != 0) {
120      memset (program, 0, DIM (program));          free_if_alloc (p);
121                    p = get_reg_entry_gpg ("gpgProgram");
122      if (use_cwd) {          if (!p || file_exist_check (p) != 0) {
123          GetCurrentDirectory (DIM (currdir)-1, currdir);              free_if_alloc (p);
124          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
125      }              return false;
126      else {          }
127          cmd = GetCommandLine ();      }
128          if (cmd == NULL)      free_if_alloc (p);
129              return NULL;      p = get_reg_entry_gpg4win (NULL);
130          strncpy (currdir, cmd, 255);      if (!p || dir_exist_check (p) != 0) {
131          j = strlen (currdir);          free_if_alloc (p);
132          while (j--) {          p = get_reg_entry_gpg ("HomeDir");
133              if (currdir[j] == '\\')          if (!p || dir_exist_check (p) != 0) {
134                  break;                        free_if_alloc (p);
135          }              log_debug ("gpg_prefs_ok: could not determine home directory");
136          currdir[j] = 0;              return false;
137          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);          }
138      }      }
139      return program;      free_if_alloc (p);
140  } /* get_prog_part */      return true;
141    }
142    
143  static int  
144  check_crypto_engine (void)  /* Check gpg files if they are read-only and ask the user
145  {     if this should be corrected. */
146      int ma=1, mi=4, pa=0; /* GPG 1.4.0 */  static void
147      int rc;  check_readonly_attr (const char *homedir)
148    {
149      rc = check_gnupg_engine (&ma, &mi, &pa);      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
150      if (rc == -1) {      char *file;
151          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);      int i;
152          return rc;  
153      }      for (i=0; files[i] != NULL; i++) {
154      else if (rc) {          file = make_filename (homedir, files[i], NULL);
155          log_box (_("WinPT Error"), MB_ERR,          remove_crit_file_attrs (file, 0);
156                   _("Sorry, you need a newer GPG version.\n"          free_if_alloc (file);
157                     "GPG version %d.%d.%d required GPG version 1.4.0"),      }
158                     ma, mi, pa);  }
159          return rc;  
160      }  
161      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */  /* Load the GPG environment. On the first start, some
162      if (ma >= 1 && mi >= 4)     checks are performed to find out in what state GPG is.
163          scard_support = 1;     Return value: 0  everything OK.
164                     >0  fatal error.
165      gpgver[0] = ma;                   -1 public keyring is empty or does not exist. */
166      gpgver[1] = mi;  static int
167      gpgver[2] = pa;  load_gpg_env (void)
168      return rc;  {
169  } /* check_crypto_engine */      SECURITY_ATTRIBUTES sec_attr;
170        char *p;
171        char *pkr;
172  static int      int err = 0;
173  load_keyserver_conf (int quiet)  
174  {      p = get_reg_entry_gpg4win ("gpg.exe");
175      const char * t;      if (!p)
176      int rc;          return (1);
177        if (file_exist_check (p)) {
178      if (reg_prefs.kserv_conf)          free_if_alloc (p);
179          t = reg_prefs.kserv_conf;          return (1);
180      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))      }
181          t = get_prog_part ("keyserver.conf", 0);      free_if_alloc (p);
182      else  
183          t = "keyserver.conf";      p = get_reg_entry_gpg ("HomeDir");
184      rc = kserver_load_conf (t);      if (!p || dir_exist_check (p) != 0) {
185      if (rc && !quiet)          free_if_alloc (p);
186          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);          p = multi_gnupg_path (0);
187      return rc;      }
188  }      if (p && dir_exist_check (p)) {
189            memset (&sec_attr, 0, sizeof (sec_attr));
190            sec_attr.nLength = sizeof (sec_attr);
191  static void          if (!CreateDirectory (p, &sec_attr)) {
192  enable_mobile_mode (void)              msg_box (NULL, _("Could not create GPG home directory"),
193  {                       _("WinPT Error"), MB_ERR);
194      memset (&reg_prefs, 0, sizeof (reg_prefs));              free_if_alloc (p);
195      reg_prefs.always_trust = 0;              return (2);
196      reg_prefs.auto_backup = 0;          }
197      reg_prefs.cache_time = 0;      }
198      reg_prefs.expert = 0;      check_readonly_attr (p);
199      reg_prefs.keylist_mode = 1;      pkr = make_filename (p, "pubring", "gpg");
200      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      free_if_alloc (p);
201      reg_prefs.no_zip_mmedia = 1;      if (get_file_size (pkr) == 0)
202      reg_prefs.use_tmpfiles = 1;          err = -1;
203      reg_prefs.word_wrap = 80;      free_if_alloc (pkr);
204      reg_prefs.use_viewer = 0; /* XXX */      return err;
205  }  }
206    
207  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);  
208    /* check if the default key from the gpg.conf file is available in the
209  int WINAPI     keyring. if not, bail out because encryption won't work properly then. */
210  #ifndef WINPT_IPC  static int
211  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)  check_default_key (void)
212  #else  {
213  win_main (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)      gpgme_key_t key;
214  #endif      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
215  {      gpg_keycache_t kc;
216      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};      char *defkey;
217      HACCEL accel_tab;  
218      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;      kc = keycache_get_ctx (0);
219      int first_start = 0, start_gpgprefs = 0;      defkey = get_gnupg_default_key ();
220      const char * s;      if (defkey) {
221      MSG msg;          err = gpg_keycache_find_key (kc, defkey, 0, &key);
222      HWND hwnd = NULL;          if (err) {
223                free_if_alloc (defkey);
224      glob_hinst = hinst;              return -1;
225                }
226      gpgme_lib_init ();      }
227      #ifdef _DEBUG      else {
228      gpgme_set_debug_mode (1);          /* Actually this is just a warning but we still continue. */
229      #endif          msg_box (NULL, _("No useable secret key found."),
230      gpgme_set_pgm_string ("WinPT "PGM_VERSION);                   _("WinPT Warning"), MB_WARN);
231            free_if_alloc (defkey);
232      s = PTD_get_version ();          return 0;
233      if (strcmp (s, "0.8.0")) {      }
234          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,  
235                   _("Please update your PTD.dll to the newest version, "      /* Because the secret key listing has no information
236                     "the version (%s) you use is too old."), s);         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 (gpg_md_selftest ()) {          msg_box (NULL, _("Default secret key is unuseable"),
241          msg_box (NULL, _("Cryptographic selftest failed."),                   _("WinPT Warning"), MB_ERR);
242                   _("WinPT Error"), MB_ERR);          free_if_alloc (defkey);
243          return 0;          return -1;
244      }      }
245        free_if_alloc (defkey);
246      if (cmdline && stristr (cmdline, "--mobile")) {      return 0;
247          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!",  }
248                   "WinPT", MB_INFO);  
249          mobile = 1;  
250      }  /* Return the WinPT program file name (with full pathname). */
251    static const char*
252      set_default_kserver ();  get_prog_part (const char *fname, int use_cwd)
253    {
254      if (!mobile) {      static char program[2*MAX_PATH+1];
255          regist_inst_gnupg (1);      char currdir[MAX_PATH+1];
256          regist_inst_winpt (1, &created);      char *cmd = NULL;
257      }      int j;
258      else {          
259          enable_mobile_mode ();      memset (currdir, 0, DIM (currdir));
260          /* XXX: ask for GPG path */      memset (program, 0, DIM (program));
261          created = 1; /* Disable registry writing */          
262      }      if (use_cwd) {
263            GetCurrentDirectory (DIM (currdir)-1, currdir);
264      if (!created) {          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
265          memset (&reg_prefs, 0, sizeof (reg_prefs));      }
266          reg_prefs.use_tmpfiles = 1; /* default */      else {
267          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          cmd = GetCommandLine ();
268          get_reg_winpt_prefs (&reg_prefs);          if (!cmd)
269          if (!reg_prefs.no_hotkeys)              return NULL;
270              hotkeys_modify ();          strncpy (currdir, cmd, DIM (currdir)-1);
271      }          j = strlen (currdir);
272            while (j--) {
273      rc = gnupg_check_homedir ();              if (currdir[j] == '\\')
274      if (rc) {                  break;
275          log_box (_("WinPT Error"), MB_ERR,          }
276                   _("GPG home directory is not set correctly.\n"          currdir[j] = 0;
277                     "Please check the GPG registry settings:\n%s."),          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
278                   winpt_strerror (rc));      }
279          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,      return program;
280                                             _("Select GPG Public Keyring"),  }
281                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),  
282                                             NULL);  
283          if (s && !file_exist_check (s))  /* Check that the underlying crypto engine fullfills the minimal
284          {     requirements so all commands work properly. */
285              size_t n;  static bool
286              char * p = strrchr (s, '\\');  check_crypto_engine (void)
287              if (!p)  {
288                  BUG (0);      int ma = 0, mi = 0, pa = 0;
289              n = p - s;      int rc;
290              if (n)  
291              {      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
292                  char * file = new char[n+1];      if (rc == -1) {
293                  if (!file)          msg_box (NULL, _("Could not read GnuPG version."),
294                      BUG (NULL);                   _("WinPT Error"), MB_ERR);
295                  memset (file, 0, n);          return false;
296                  memcpy (file, s, n);      }
297                  file[n] = '\0';              else if (rc) {
298                  set_reg_entry_gpg ("HomeDir", file);          log_box (_("WinPT Error"), MB_ERR,
299                  free_if_alloc (file);                   _("A newer GPG version is needed.\n"
300                  gnupg_check_homedir (); /* change gpgProgram if needed */                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
301              }                     ma, mi, pa);
302          }          return false;
303          else {      }
304              msg_box (NULL, _("GPG home directory could not be determited."),      /* Enable smart card support for GPG 2 or >= 1.4 */
305                       _("WinPT Error"), MB_ERR);      if ((ma > 1 || pa >= 4) && pcsc_available ())
306              goto start;          scard_support = 1;
307          }  
308      }      gpgver[0] = ma;
309        gpgver[1] = mi;
310      rc = check_gnupg_prog ();      gpgver[2] = pa;
311      if (rc) {      return true;
312          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  }
313                               "Do you want to start the GPG preferences to "  
314                               "correct  this problem?"), _("WinPT Error"),  
315                               MB_INFO|MB_YESNO) == IDYES)  /* Try to load the keyserver config file. If @quiet is 1
316              start_gpgprefs = 1;     do not show any errors. */
317          else  static int
318          {  load_keyserver_conf (int quiet)
319              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  {    
320              return 0;      const char *t, *conf;
321          }      char *buf;
322      }      int rc;
323    
324      rc = gnupg_access_files ();      #ifdef WINPT_MOBILE
325      if (!start_gpgprefs && rc)      /* In mobile mode we automatically assume the config file
326      {         in the current directory. */
327          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)      return kserver_load_conf ("keyserver.conf");
328          {      #endif
329              ec = msg_box (NULL,  
330                  _("Could not access and/or find the public and secret keyring.\n"      /* Create $APPDATA\winpt if needed. */
331                    "If this is an accident, quit the program and fix it.\n\n"      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
332                    "Continue if you want that WinPT offers you more choices.\n"),      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
333                    "WinPT", MB_INFO|MB_YESNO);          MessageBox (NULL, _("Failed to create WinPT directory"),
334              if (ec == IDYES)                      _("Keyserver"), MB_ERR);
335                  first_start = 1;          free_if_alloc (buf);
336          }          return -1;
337          if (!first_start)      }
338          {      free_if_alloc (buf);
339              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
340              return 0;      /* Check for $APPDATA\winpt\keyserver.conf */
341          }      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
342      }  
343        conf = get_prog_part ("keyserver.conf", 0);
344      if (!first_start)      if (!file_exist_check (conf))
345      {          t = conf;
346          rc = gpg_check_permissions (1);      else
347          if (rc && rc == 2)          t = "keyserver.conf";
348              gpg_read_only = 1;      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
349          else if (rc)          if (!CopyFile (t, buf, FALSE)) {
350              return 0;              MessageBox (NULL, _("Failed to copy the keyserver.conf"),
351      }                          _("Keyserver"), MB_ERR);
352                free_if_alloc (buf);
353      load_gettext ();              return -1;
354      init_gnupg_table ();          }
355            t = buf;
356      nfiles = fm_parse_command_line (cmdline);      }
357      if (nfiles > 0)      else
358          return 0;          t = buf;
359        
360      if (cmdline && stristr (cmdline, "--wipe-freespace")) {      rc = kserver_load_conf (t);
361          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      if (rc && !quiet)
362                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
363                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);      else {
364          free_gnupg_table ();          free_if_alloc (reg_prefs.kserv_conf);
365          return 0;          reg_prefs.kserv_conf = m_strdup (t);
366      }      }
367        free_if_alloc (buf);
368      load_keyserver_conf (cmdline? 1 : 0);      return rc;
369      if (start_keymanager) {  }
370          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,  
371                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  
372                              _("Key Manager"), IDS_WINPT_KEYMISC);  /* Check if both keyrings are empty. This indicates that
373          keycache_release ();     WinPT should offer to generate a key pair. */
374          free_gnupg_table ();  static bool
375          return 0;  check_for_empty_keyrings (bool pub_only)
376      }  {
377        char *p;
378      if (cmdline && (stristr (cmdline, "--keymanager")      int n = 0;
379                  || stristr (cmdline, "--cardmanager"))) {  
380          update_keycache (GetDesktopWindow ());      p = get_gnupg_keyring (1, 0);
381          if (stristr (cmdline, "keymanager"))      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
382              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,          n++;
383                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      free_if_alloc (p);
384                              _("Key Manager"), IDS_WINPT_KEYMISC);        if (pub_only)
385          else {          return n == 1? true : false;
386              gpgme_card_t crd = smartcard_init ();      p = get_gnupg_keyring (0, 0);
387              if (crd)      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
388                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,          n++;
389                                    GetDesktopWindow(), card_edit_dlg_proc,      free_if_alloc (p);
390                                    (LPARAM)crd, _("Card Manager"),      return n==2? true : false;
391                                    IDS_WINPT_CARD_EDIT);  }
392              gpgme_card_release (crd);  
393          }  
394          keycache_release ();  #ifdef WINPT_MOBILE
395          free_gnupg_table ();  /* Enable the mobile mode if possible.
396          return 0;     There are some constraints which must be fullfilled.
397      }     Return value: 0 on success. */
398    static int
399      CreateMutex (NULL, TRUE, PGM_NAME);  enable_mobile_mode (void)
400      if (GetLastError () == ERROR_ALREADY_EXISTS) {  {
401          free_gnupg_table ();      static const char *test_fname = "winpt_mobile_test.txt";
402          return 0;      FILE *fp;
403      }      char *pubring;
404        ULARGE_INTEGER caller, total;
405      if (cmdline) {      DWORD temp_size;
406          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {  
407              gpgme_set_debug_mode (1);      fp = fopen (test_fname, "wb");
408              winpt_debug_msg ();      if (fp == NULL) {
409              debug = 1;          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
410          }                            "for the current directory", "WinPT Error", MB_ERR);
411      }              
412            return -1;
413      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      }
414      rc = RegisterClass (&wc);      fclose (fp);
415      if (rc == FALSE) {      DeleteFile (test_fname);
416          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);      if (file_exist_check ("gpg.exe")) {
417          free_gnupg_table ();          MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
418          return 0;                            "as the WinPT program", "WinPT Error", MB_ERR);
419      }          return -1;
420        }
421      hwnd = CreateWindow (PGM_NAME,      
422                           PGM_NAME,      /* Because write operations to the keyring result in a temporary
423                           0, 0, 0, 0, 0,         file, we need at least 2 MB plus the size of the keyring for
424                           NULL,         free space. */
425                           NULL,      pubring = get_gnupg_keyring (1);
426                           hinst,      temp_size = get_file_size (pubring) + 2097152;
427                           NULL);      free_if_alloc (pubring);
428      if (hwnd == NULL) {  
429          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);      if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
430          free_gnupg_table ();          caller.LowPart < temp_size) {
431          return 0;          log_box ("WinPT Error", MB_ERR,
432      }                   "The mobile mode needs at least %lu KB for temporary files",
433      glob_hwnd = hwnd;                   temp_size/1024);
434      UpdateWindow (hwnd);          return -1;
435        }
436      if (!first_start && !start_gpgprefs) {  
437          gnupg_backup_options (1);      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
438          gnupg_backup_options (0);  
439                return 0;
440          rc = check_crypto_engine ();  }
441          if (rc) {  #endif
442              DestroyWindow (hwnd);  
443              free_gnupg_table ();  
444              return 0;  /* Set the default keyserver for this instance. */
445          }  void
446      }  set_default_keyserver (void)
447        {
448      if (start_gpgprefs) {      char *host = get_reg_entry_keyserver ("Default");
449          char *ring;      char *str_port = get_reg_entry_keyserver ("Default_Port");
450          size_t size = 0;      WORD port = HKP_PORT;
451          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  
452                          gpgprefs_dlg_proc, NULL);      if (!host)
453          ring = get_gnupg_keyring (0, !NO_STRICT);          keyserver_set_default (NULL, 0);
454          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)      else {
455              first_start = 1; /* The keyring is empty! */          if (str_port && *str_port)
456          free_if_alloc (ring);              port = atoi (str_port);
457      }          keyserver_set_default (host, port);
458        }
459      if (first_start) {      free_if_alloc (host);
460          struct first_start_s fs;      free_if_alloc (str_port);
461          struct genkey_s c;  }
462          HWND h;  
463  start:  
464          h = GetDesktopWindow ();  /* Display info message that WinPT is now in debug mode. */
465          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,  void
466                              gpgprefs_dlg_proc, NULL);  winpt_debug_msg (void)
467          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,  {      
468                          first_run_dlg_proc, (LPARAM)&fs);      char output[512];
469          switch (fs.choice) {      char temp[128];
470          case SETUP_KEYGEN:          
471              c.interactive = 1;      GetTempPath (DIM (temp) -1, temp);
472              c.first_start = 1;      _snprintf (output, DIM (output)-1,
473              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,          "The GPGME output file is %sgpgme.dbg\n"
474                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);          "The WinPT output file is %swinpt.log\n", temp, temp);
475              if (!rc)      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
476                  goto start;  }
477              break;  
478    
479          case SETUP_IMPORT:  /* Search for insecure ElGamal keys and return the
480              rc = gnupg_copy_keyrings ();     number of founded keys. */
481              if (rc) {  static int
482                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  count_insecure_elgkeys (void)
483                  goto start;  {
484              }      gpg_keycache_t pc;
485              break;      gpgme_key_t key;
486        int n = 0;
487          case -1:  
488              DestroyWindow (hwnd);      pc = keycache_get_ctx (1);
489              free_gnupg_table ();      while (!gpg_keycache_next_key (pc, 0, &key)) {
490              return 0;          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
491          }              n++;
492          update_keycache (hwnd);      }
493          check_crypto_engine ();      gpg_keycache_rewind (pc);
494      }      return n;
495      else {  }
496          gpgme_keycache_t c;  
497          update_keycache (hwnd);  
498          c = keycache_get_ctx (1);  /* Main entry point. */
499          if (!c || !gpgme_keycache_count (c)) {  int WINAPI
500              gnupg_display_error ();  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
501              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"  {
502                               "Please check your GPG config (keyrings, pathes...)"),      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
503                               _("WinPT Error"), MB_ERR);      HACCEL accel_tab;
504              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"      MSG msg;
505                                    "Do you want to start the GPG preferences dialog?"),      HWND hwnd = NULL;
506                              "WinPT", MB_INFO|MB_YESNO);      WORD ver[3], ptdver[4];
507              if (ec == IDYES) {      const char *s;
508                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      int rc, ec, created = 0;
509                                  gpgprefs_dlg_proc, NULL);      int first_start = 0, start_gpgprefs = 0;
510                  update_keycache (hwnd);      int winpt_inst_found = 0;
511              }      int start_manager = 0;    
512              else {  
513                  DestroyWindow (hwnd);  #ifdef WINPT_MOBILE
514                  free_gnupg_table ();      /* Do not continue in case of problems. */
515                  return 0;      if (enable_mobile_mode ())
516              }          return 0;
517          }  #endif
518          if (check_default_key (c)) {  
519              char * p = get_gnupg_default_key ();      glob_hinst = hinst;
520              log_box (_("WinPT Error"), MB_ERR,      if (cmdline && stristr (cmdline, "--stop")) {
521                       _("Default key from the GPG options file could not be found.\n"          hwnd = FindWindow ("WinPT", "WinPT");
522                         "Please check your gpg.conf (options) to correct this:\n\n"          if (hwnd != NULL)
523                         "%s: public key not found."), p? p : "[null]");              PostMessage (hwnd, WM_DESTROY, 0, 0);
524              free_if_alloc (p);          return 0;
525              DestroyWindow (hwnd);      }
526              free_gnupg_table ();  
527              return 0;  #ifdef _DEBUG
528          }      gpg_set_debug_mode (1);
529          if (count_insecure_elgkeys ())      debug = 1;
530              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,  #endif
531                              elgamal_warn_dlg_proc, NULL);  
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      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);                                   &ptdver[2], &ptdver[3]);
535      keyring_check_last_access (); /* init */      
536      while (GetMessage (&msg, hwnd, 0, 0)) {      if (!ec && (ptdver[0] != ver[0] ||
537          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {                  ptdver[1] != ver[1] ||
538              TranslateMessage (&msg);                  ptdver[2] != ver[2])) {
539              DispatchMessage (&msg);          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;          return 0;
544  } /* WinMain */      }
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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