/[winpt]/trunk/Src/WinPT.cpp
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revision 14 by twoaday, Wed May 4 07:59:42 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 "wptNLS.h"
37  HINSTANCE glob_hinst; /* global instance for the dialogs */  #include "wptKeyserver.h"
38  HWND glob_hwnd; /* global window handle for the dialogs */  #include "wptCard.h"
39  HWND activ_hwnd;  #include "wptFileManager.h"
40  LOCK mo_file;  #include "wptContext.h"
41  int scard_support = 0;  #include "wptCardEdit.h"
42  int debug = 0;  #include "wptCrypto.h"
43  int mobile = 0;  #include "wptUTF8.h"
44  int gpg_read_only = 0;  
45  char gpgver[3];  void remove_crit_file_attrs (const char *fname, int force);
46    BOOL user_is_admin (void);
47  /* Internal IPC */  int  pcsc_available (void);
48  int start_keymanager = 0;  
49    /* Global variables. */
50  static void  HINSTANCE glob_hinst;   /* global instance for the dialogs */
51  update_keycache (HWND hwnd)  HWND glob_hwnd;         /* global window handle for the dialogs */
52  {  int scard_support = 0;
53      refresh_cache_s rcs = {0};  int debug = 0;
54      rcs.kr_reload = 0;  int gpg_read_only = 0;
55      rcs.kr_update = 1;  int admin_user = 0;
56      rcs.tr_update = 1;  char gpgver[3];
57      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  /* End */
58                      keycache_dlg_proc, (LPARAM)&rcs);  
59  } /* update_keycache */  
60    /* Load the key cache and rebuild the signature cache. */
61    int
62  static char *  update_keycache (HWND hwnd)
63  get_gettext_lang (void)  {
64  {          int err;
65      char * fname;      refresh_cache_s rcs;
66      fname = get_reg_entry_mo ();  
67      if (!fname)      /* no need to rebuild the sig cache each time. */
68          return NULL;      memset (&rcs, 0, sizeof (rcs));
69      return fname;      rcs.kring_update = 1;
70  } /* get_gettext_lang */      err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
71                        keycache_dlg_proc, (LPARAM)&rcs);
72        if (err) {
73  static void          char *cfgf = get_gnupg_config ();
74  load_gettext (void)          if (cfgf && check_gnupg_options (cfgf, 0) == WPTERR_FILE_EXIST)
75  {              msg_box (NULL, _("The gpg.conf contains at least one argument which points to a non-existing file."), "WinPT", MB_ERR);
76      char * nls = NULL;          free_if_alloc (cfgf);
77      char * file = NULL;          return -1;
78        }
79      nls = get_gettext_lang ();      return 0;
80      if (nls) {  }
81          set_gettext_file ("winpt", nls);  
82          file = make_filename (nls, "winpt", "mo");  
83          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
84              msg_box (NULL, _("Could not initizalize file lock.\n"  void
85                               "Native Language Support"),  gpg_set_debug_mode (int val)
86                       _("WinPT Error"), MB_ERR);  {
87          }      static char buf[256];
88          free_if_alloc (nls);      char tmp[128];
89          free_if_alloc (file);      
90      }      /* XXX: no gpgme.dbg is created. */
91  } /* load_gettext */      if (val > 0) {
92            GetTempPath (DIM (tmp)-1, tmp);
93            _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
94  /* check if the default key from the gpg.conf file is available in the          putenv (buf);
95     keyring. if not, bail out because encryption won't work properly then. */      }
96  static int      else
97  check_default_key (gpgme_keycache_t kc)          putenv ("GPGME_DEBUG=");
98  {  }
99      gpgme_key_t key;  
100      gpgme_error_t err = GPGME_No_Error;  
101      char * defkey;  /* Initialize the gettext sub system. */
102    static void
103      defkey = get_gnupg_default_key ();  load_gettext (void)
104      if (defkey)  {
105          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      char *nls;
106      free_if_alloc (defkey);  
107      return err? -1 : 0;      /* Return the name of the gettext language file. */
108  } /* check_default_key */      nls = get_reg_entry_mo ();
109        if (nls != NULL) {
110            set_gettext_file ("winpt", nls);
111  /* Return the WinPT program file name (with full pathname). */          free_if_alloc (nls);
112  static const char *      }
113  get_prog_part (const char * fname, int use_cwd)  }
114  {  
115      static char program[1024];  
116      char currdir[256], * cmd = NULL;  /* Return true if the GPG environment is useable. */
117      int j;  static bool
118            gpg_prefs_ok (void)
119      memset (currdir, 0, DIM (currdir));  {
120      memset (program, 0, DIM (program));      char *p;
121            
122      if (use_cwd) {      p = get_reg_entry_gpg4win ("gpg.exe");
123          GetCurrentDirectory (DIM (currdir)-1, currdir);      if (!p || file_exist_check (p) != 0) {
124          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);          free_if_alloc (p);
125      }          p = get_reg_entry_gpg ("gpgProgram");
126      else {          if (!p || file_exist_check (p) != 0) {
127          cmd = GetCommandLine ();              free_if_alloc (p);
128          if (cmd == NULL)              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
129              return NULL;              return false;
130          strncpy (currdir, cmd, 255);          }
131          j = strlen (currdir);      }
132          while (j--) {      free_if_alloc (p);
133              if (currdir[j] == '\\')      p = get_reg_entry_gpg4win (NULL);
134                  break;                if (!p || dir_exist_check (p) != 0) {
135          }          free_if_alloc (p);
136          currdir[j] = 0;          p = get_reg_entry_gpg ("HomeDir");
137          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);          if (!p || dir_exist_check (p) != 0) {
138      }              free_if_alloc (p);
139      return program;              log_debug ("gpg_prefs_ok: could not determine home directory");
140  } /* get_prog_part */              return false;
141            }
142        }
143  static int      free_if_alloc (p);
144  check_crypto_engine (void)      return true;
145  {  }
146      int ma=1, mi=2, pa=4; /* GPG 1.2.4 */  
147      int rc;  
148    /* Check gpg files if they are read-only and ask the user
149      rc = check_gnupg_engine (&ma, &mi, &pa);     if this should be corrected. */
150      if (rc == -1) {  static void
151          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);  check_readonly_attr (const char *homedir)
152          return rc;  {
153      }      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
154      else if (rc) {      char *file;
155          log_box (_("WinPT Error"), MB_ERR,      int i;
156                   _("Sorry, you need a newer GPG version.\n"  
157                     "GPG version %d.%d.%d requred GPG version 1.2.4"),      for (i=0; files[i] != NULL; i++) {
158                     ma, mi, pa);          file = make_filename (homedir, files[i], NULL);
159          return rc;          remove_crit_file_attrs (file, 0);
160      }          free_if_alloc (file);
161      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */      }
162      if (ma >= 1 && mi >= 4)  }
163          scard_support = 1;  
164    
165      gpgver[0] = ma;  /* Load the GPG environment. On the first start, some
166      gpgver[1] = mi;     checks are performed to find out in what state GPG is.
167      gpgver[2] = pa;     Return value: 0  everything OK.
168      return rc;                   >0  fatal error.
169  } /* check_crypto_engine */                   -1 public keyring is empty or does not exist. */
170    static int
171    load_gpg_env (void)
172  static int  {
173  load_keyserver_conf (int quiet)      SECURITY_ATTRIBUTES sec_attr;
174  {      char *p;
175      const char * t;      char *pkr;
176      int rc;      int err = 0;
177    
178      if (reg_prefs.kserv_conf)      p = get_reg_entry_gpg4win ("gpg.exe");
179          t = reg_prefs.kserv_conf;      if (!p)
180      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))          return (1);
181          t = get_prog_part ("keyserver.conf", 0);      if (file_exist_check (p)) {
182      else          free_if_alloc (p);
183          t = "keyserver.conf";          return (1);
184      rc = kserver_load_conf (t);      }
185      if (rc && !quiet)      free_if_alloc (p);
186          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);  
187      return rc;      p = get_reg_entry_gpg ("HomeDir");
188  }      if (!p || dir_exist_check (p) != 0) {
189            free_if_alloc (p);
190            p = multi_gnupg_path (0);
191  static void      }
192  enable_mobile_mode (void)      if (p && dir_exist_check (p)) {
193  {          memset (&sec_attr, 0, sizeof (sec_attr));
194      memset (&reg_prefs, 0, sizeof (reg_prefs));          sec_attr.nLength = sizeof (sec_attr);
195      reg_prefs.always_trust = 0;          if (!CreateDirectory (p, &sec_attr)) {
196      reg_prefs.auto_backup = 0;              msg_box (NULL, _("Could not create GPG home directory"),
197      reg_prefs.cache_time = 0;                       _("WinPT Error"), MB_ERR);
198      reg_prefs.expert = 0;              free_if_alloc (p);
199      reg_prefs.keylist_mode = 1;              return (2);
200      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");          }
201      reg_prefs.no_zip_mmedia = 1;      }
202      reg_prefs.use_tmpfiles = 1;      check_readonly_attr (p);
203      reg_prefs.word_wrap = 80;      pkr = make_filename (p, "pubring", "gpg");
204      reg_prefs.use_viewer = 0; /* XXX */      free_if_alloc (p);
205  }      if (get_file_size (pkr) == 0)
206            err = -1;
207  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);      free_if_alloc (pkr);
208        return err;
209  int WINAPI  }
210  #ifndef WINPT_IPC  
211  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)  
212  #else  /* check if the default key from the gpg.conf file is available in the
213  win_main (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)     keyring. if not, bail out because encryption won't work properly then. */
214  #endif  static int
215  {  check_default_key (void)
216      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};  {
217      HACCEL accel_tab;      gpgme_key_t key;
218      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
219      int first_start = 0, start_gpgprefs = 0;      gpg_keycache_t kc;
220      const char * s;      char *defkey;
221      MSG msg;  
222      HWND hwnd;      kc = keycache_get_ctx (0);
223        defkey = get_gnupg_default_key ();
224      glob_hinst = hinst;      if (defkey) {
225                err = gpg_keycache_find_key (kc, defkey, 0, &key);
226      gpgme_lib_init ();          if (err) {
227      #ifdef _DEBUG              free_if_alloc (defkey);
228      gpgme_set_debug_mode (1);              return -1;
229      #endif          }
230      gpgme_set_pgm_string ("WinPT "PGM_VERSION);      }
231        else {
232      s = PTD_get_version ();          /* Actually this is just a warning but we still continue. */
233      if (strcmp (s, "0.8.0")) {          msg_box (NULL, _("No useable secret key found."),
234          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,                   _("WinPT Warning"), MB_WARN);
235                   _("Please update your PTD.dll to the newest version, "          free_if_alloc (defkey);
236                     "the version (%s) you use is too old."), s);          return 0;
237          return 0;      }
238      }  
239        /* Because the secret key listing has no information
240      if (gpg_md_selftest ()) {         about the validity/status, we need to check the public key. */
241          msg_box (NULL, _("Cryptographic selftest failed."),      kc = keycache_get_ctx (1);
242                   _("WinPT Error"), MB_ERR);      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
243          return 0;          (key->revoked || key->expired)) {
244      }          msg_box (NULL, _("Default secret key is unuseable"),
245                     _("WinPT Warning"), MB_ERR);
246      if (cmdline && stristr (cmdline, "--mobile"))          free_if_alloc (defkey);
247          mobile = 1;          return -1;
248        }
249      set_default_kserver ();      free_if_alloc (defkey);
250        return 0;
251      if (!mobile) {  }
252          regist_inst_gnupg (1);  
253          regist_inst_winpt (1, &created);  
254      }  /* Return the WinPT program file name (with full pathname). */
255      else {  static const char*
256          enable_mobile_mode ();  get_prog_part (const char *fname, int use_cwd)
257          /* XXX: ask for GPG path */  {
258          created = 1; /* Disable registry writing */      static char program[2*MAX_PATH+1];
259      }      char currdir[MAX_PATH+1];
260        char *cmd = NULL;
261      if (!created) {      int j;
262          memset (&reg_prefs, 0, sizeof (reg_prefs));          
263          reg_prefs.use_tmpfiles = 1; /* default */      memset (currdir, 0, DIM (currdir));
264          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */      memset (program, 0, DIM (program));
265          get_reg_winpt_prefs (&reg_prefs);          
266          if (!reg_prefs.no_hotkeys)      if (use_cwd) {
267              hotkeys_modify ();          GetCurrentDirectory (DIM (currdir)-1, currdir);
268      }          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
269        }
270      rc = gnupg_check_homedir ();      else {
271      if (rc) {          cmd = GetCommandLine ();
272          log_box (_("WinPT Error"), MB_ERR,          if (!cmd)
273                   _("GPG home directory is not set correctly.\n"              return NULL;
274                     "Please check the GPG registry settings:\n%s."),          strncpy (currdir, cmd, DIM (currdir)-1);
275                   winpt_strerror (rc));          j = strlen (currdir);
276          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,          while (j--) {
277                                             _("Select GPG Public Keyring"),              if (currdir[j] == '\\')
278                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),                  break;
279                                             NULL);          }
280          if (s && !file_exist_check (s))          currdir[j] = 0;
281          {          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
282              size_t n;      }
283              char * p = strrchr (s, '\\');      return program;
284              if (!p)  }
285                  BUG (0);  
286              n = p - s;  
287              if (n)  /* Check that the underlying crypto engine fullfills the minimal
288              {     requirements so all commands work properly. */
289                  char * file = new char[n+1];  static bool
290                  if (!file)  check_crypto_engine (void)
291                      BUG (NULL);  {
292                  memset (file, 0, n);      int ma = 0, mi = 0, pa = 0;
293                  memcpy (file, s, n);      int rc;
294                  file[n] = '\0';          
295                  set_reg_entry_gpg ("HomeDir", file);      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
296                  free_if_alloc (file);      if (rc == -1) {
297                  gnupg_check_homedir (); /* change gpgProgram if needed */          msg_box (NULL, _("Could not read GnuPG version."),
298              }                   _("WinPT Error"), MB_ERR);
299          }          return false;
300          else {      }
301              msg_box (NULL, _("GPG home directory could not be determited."),      else if (rc) {
302                       _("WinPT Error"), MB_ERR);          log_box (_("WinPT Error"), MB_ERR,
303              goto start;                   _("Sorry, you need a newer GPG version.\n"
304          }                     "GPG version %d.%d.%d required GPG version "NEED_GPG_VERSION),
305      }                     ma, mi, pa);
306            return false;
307      rc = check_gnupg_prog ();      }
308      if (rc) {      /* Enable smart card support for GPG 2 or >= 1.4 */
309          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"      if ((ma > 1 || pa >= 4) && pcsc_available ())
310                               "Do you want to start the GPG preferences to "          scard_support = 1;
311                               "correct  this problem?"), _("WinPT Error"),  
312                               MB_INFO|MB_YESNO) == IDYES)      gpgver[0] = ma;
313              start_gpgprefs = 1;      gpgver[1] = mi;
314          else      gpgver[2] = pa;
315          {      return true;
316              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  }
317              return 0;  
318          }  
319      }  /* Try to load the keyserver config file. If @quiet is 1
320       do not show any errors. */
321      rc = gnupg_access_files ();  static int
322      if (!start_gpgprefs && rc)  load_keyserver_conf (int quiet)
323      {  {    
324          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)      const char *t, *conf;
325          {      char *buf;
326              ec = msg_box (NULL,      int rc;
327                  _("Could not access and/or find the public and secret keyring.\n"  
328                    "If this is an accident, quit the program and fix it.\n\n"      #ifdef WINPT_MOBILE
329                    "Continue if you want that WinPT offers you more choices.\n"),      /* In mobile mode we automatically assume the config file
330                    "WinPT", MB_INFO|MB_YESNO);         in the current directory. */
331              if (ec == IDYES)      return kserver_load_conf ("keyserver.conf");
332                  first_start = 1;      #endif
333          }  
334          if (!first_start)      /* Create $APPDATA\winpt if needed. */
335          {      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
336              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
337              return 0;          MessageBox (NULL, _("Failed to create WinPT directory"),
338          }                      _("Keyserver"), MB_ERR);
339      }          free_if_alloc (buf);
340            return -1;
341      if (!first_start)      }
342      {      free_if_alloc (buf);
343          rc = gpg_check_permissions (1);  
344          if (rc && rc == 2)      /* Check for $APPDATA\winpt\keyserver.conf */
345              gpg_read_only = 1;      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
346          else if (rc)  
347              return 0;      conf = get_prog_part ("keyserver.conf", 0);
348      }      if (!file_exist_check (conf))
349            t = conf;
350      load_gettext ();      else
351      init_gnupg_table ();          t = "keyserver.conf";
352        if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
353      nfiles = fm_parse_command_line (cmdline);          if (!CopyFile (t, buf, FALSE)) {
354      if (nfiles > 0)              MessageBox (NULL, _("Failed to copy the keyserver.conf"),
355          return 0;                          _("Keyserver"), MB_ERR);
356                free_if_alloc (buf);
357      if (cmdline && stristr (cmdline, "--wipe-freespace")) {              return -1;
358          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,          }
359                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,          t = buf;
360                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);      }
361          free_gnupg_table ();      else
362          return 0;          t = buf;
363      }      
364        rc = kserver_load_conf (t);
365      load_keyserver_conf (cmdline? 1 : 0);      if (rc && !quiet)
366      if (start_keymanager) {          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
367          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      else {
368                              GetDesktopWindow(), keymanager_dlg_proc, NULL,          free_if_alloc (reg_prefs.kserv_conf);
369                              _("Key Manager"), IDS_WINPT_KEYMISC);          reg_prefs.kserv_conf = m_strdup (t);
370          keycache_release ();      }
371          free_gnupg_table ();      free_if_alloc (buf);
372          return 0;      return rc;
373      }  }
374    
375      if (cmdline && (stristr (cmdline, "--keymanager")  
376                  || stristr (cmdline, "--cardmanager"))) {  /* Check if both keyrings are empty. This indicates that
377          update_keycache (GetDesktopWindow ());     WinPT should offer to generate a key pair. */
378          if (stristr (cmdline, "keymanager"))  static bool
379              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,  check_for_empty_keyrings (bool pub_only)
380                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  {
381                              _("Key Manager"), IDS_WINPT_KEYMISC);        char *p;
382          else {      int n = 0;
383              gpgme_card_t crd = smartcard_init ();  
384              if (crd)      p = get_gnupg_keyring (1, 0);
385                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
386                                    GetDesktopWindow(), card_edit_dlg_proc,          n++;
387                                    (LPARAM)crd, _("Card Manager"),      free_if_alloc (p);
388                                    IDS_WINPT_CARD_EDIT);      if (pub_only)
389              gpgme_card_release (crd);          return n == 1? true : false;
390          }      p = get_gnupg_keyring (0, 0);
391          keycache_release ();      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
392          free_gnupg_table ();          n++;
393          return 0;      free_if_alloc (p);
394      }      return n==2? true : false;
395    }
396      CreateMutex (NULL, TRUE, PGM_NAME);  
397      if (GetLastError () == ERROR_ALREADY_EXISTS) {  
398          free_gnupg_table ();  #ifdef WINPT_MOBILE
399          return 0;  /* Enable the mobile mode if possible.
400      }     There are some constraints which must be fullfilled.
401       Return value: 0 on success. */
402      if (cmdline) {  static int
403          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {  enable_mobile_mode (void)
404              gpgme_set_debug_mode (1);  {
405              winpt_debug_msg ();      static const char *test_fname = "winpt_mobile_test.txt";
406              debug = 1;      FILE *fp;
407          }      char *pubring;
408      }      ULARGE_INTEGER caller, total;
409        DWORD temp_size;
410      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));  
411      rc = RegisterClass (&wc);      fp = fopen (test_fname, "wb");
412      if (rc == FALSE) {      if (fp == NULL) {
413          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
414          free_gnupg_table ();                            "for the current directory", "WinPT Error", MB_ERR);
415          return 0;              
416      }          return -1;
417        }
418      hwnd = CreateWindow (PGM_NAME,      fclose (fp);
419                           PGM_NAME,      DeleteFile (test_fname);
420                           0, 0, 0, 0, 0,      if (file_exist_check ("gpg.exe")) {
421                           NULL,          MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
422                           NULL,                            "as the WinPT program", "WinPT Error", MB_ERR);
423                           hinst,          return -1;
424                           NULL);      }
425      if (hwnd == NULL) {      
426          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);      /* Because write operations to the keyring result in a temporary
427          free_gnupg_table ();         file, we need at least 2 MB plus the size of the keyring for
428          return 0;         free space. */
429      }      pubring = get_gnupg_keyring (1);
430      glob_hwnd = hwnd;      temp_size = get_file_size (pubring) + 2097152;
431      UpdateWindow (hwnd);      free_if_alloc (pubring);
432    
433      if (!first_start && !start_gpgprefs) {      if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
434          gnupg_backup_options (1);          caller.LowPart < temp_size) {
435          gnupg_backup_options (0);          log_box ("WinPT Error", MB_ERR,
436                             "The mobile mode needs at least %lu KB for temporary files",
437          rc = check_crypto_engine ();                   temp_size/1024);
438          if (rc) {          return -1;
439              DestroyWindow (hwnd);      }
440              free_gnupg_table ();  
441              return 0;      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
442          }  
443      }      return 0;
444    }
445      if (start_gpgprefs)  #endif
446      {  
447          char *ring;  
448          size_t size = 0;  /* Set the default keyserver for this instance. */
449          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  void
450                          gpgprefs_dlg_proc, NULL);  set_default_keyserver (void)
451          ring = get_gnupg_keyring (0, !NO_STRICT);  {
452          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)      char *host = get_reg_entry_keyserver ("Default");
453              first_start = 1; /* The keyring is empty! */      char *str_port = get_reg_entry_keyserver ("Default_Port");
454          free_if_alloc (ring);      WORD port = HKP_PORT;
455      }  
456        if (!host)
457      if (first_start) {          keyserver_set_default (NULL, 0);
458          struct key_wizard_s c, dummy;      else {
459  start:          if (str_port && *str_port)
460          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,              port = atoi (str_port);
461                          first_run_dlg_proc, (LPARAM)&dummy);          keyserver_set_default (host, port);
462          switch (dummy.interactive)      }
463          {      free_if_alloc (host);
464          case SETUP_KEYGEN:      free_if_alloc (str_port);
465              c.interactive = 1;  }
466              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,  
467                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);  
468              if (!rc)  /* Display info message that WinPT is now in debug mode. */
469                  goto start;  void
470              break;  winpt_debug_msg (void)
471    {      
472          case SETUP_IMPORT:      char output[512];
473              rc = gnupg_copy_keyrings ();      char temp[128];
474              if (rc) {          
475                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      GetTempPath (DIM (temp) -1, temp);
476                  goto start;      _snprintf (output, DIM (output)-1,
477              }          "The GPGME output file is %sgpgme.dbg\n"
478              break;          "The WinPT output file is %swinpt.log\n", temp, temp);
479        MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
480          case SETUP_EXISTING:  }
481              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  
482                              gpgprefs_dlg_proc, NULL);  
483              break;  /* Search for insecure ElGamal keys and return the
484       number of founded keys. */
485          case -1:  static int
486              DestroyWindow (hwnd);  count_insecure_elgkeys (void)
487              free_gnupg_table ();  {
488              return 0;      gpg_keycache_t pc;
489          }      gpgme_key_t key;
490          update_keycache (hwnd);      int n = 0;
491          check_crypto_engine ();  
492      }      pc = keycache_get_ctx (1);
493      else {      while (!gpg_keycache_next_key (pc, 0, &key)) {
494          gpgme_keycache_t c;          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
495          update_keycache (hwnd);              n++;
496          c = keycache_get_ctx (1);      }
497          if (!c || !gpgme_keycache_count (c)) {      gpg_keycache_rewind (pc);
498              gnupg_display_error ();      return n;
499              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"  }
500                               "Please check your GPG config (keyrings, pathes...)"),  
501                               _("WinPT Error"), MB_ERR);  
502              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"  /* Main entry point. */
503                                    "Do you want to start the GPG preferences dialog?"),  int WINAPI
504                              "WinPT", MB_INFO|MB_YESNO);  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
505              if (ec == IDYES) {  {
506                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
507                                  gpgprefs_dlg_proc, NULL);      HACCEL accel_tab;
508                  update_keycache (hwnd);      MSG msg;
509              }      HWND hwnd = NULL;
510              else {      WORD ver[3], ptdver[4];
511                  DestroyWindow (hwnd);      const char *s;
512                  free_gnupg_table ();      int rc, ec, created = 0;
513                  return 0;      int first_start = 0, start_gpgprefs = 0;
514              }      int winpt_inst_found = 0;
515          }      int start_manager = 0;    
516          if (check_default_key (c)) {  
517              char * p = get_gnupg_default_key ();  #ifdef WINPT_MOBILE
518              log_box (_("WinPT Error"), MB_ERR,      /* Do not continue in case of problems. */
519                       _("Default key from the GPG options file could not be found.\n"      if (enable_mobile_mode ())
520                         "Please check your gpg.conf (options) to correct this:\n\n"          return 0;
521                         "%s: public key not found."), p? p : "[null]");  #endif
522              free_if_alloc (p);  
523              DestroyWindow (hwnd);      glob_hinst = hinst;
524              free_gnupg_table ();      if (cmdline && stristr (cmdline, "--stop")) {
525              return 0;          hwnd = FindWindow ("WinPT", "WinPT");
526          }          if (hwnd != NULL)
527          if (count_insecure_elgkeys ())              PostMessage (hwnd, WM_DESTROY, 0, 0);
528              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,          return 0;
529                              elgamal_warn_dlg_proc, NULL);      }
530      }  
531        #ifdef _DEBUG
532      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      gpg_set_debug_mode (1);
533      keyring_check_last_access (); /* init */      debug = 1;
534      while (GetMessage (&msg, hwnd, 0, 0)) {      #endif
535          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {  
536              TranslateMessage (&msg);      get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
537              DispatchMessage (&msg);      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
538          }                                   &ptdver[2], &ptdver[3]);
539      }      
540                if (!ec && (ptdver[0] != ver[0] ||
541      return 0;                  ptdver[1] != ver[1] ||
542  } /* WinMain */                  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                       ver[0], ver[1], ver[2]);
547            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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