/[winpt]/trunk/Src/WinPT.cpp
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revision 24 by twoaday, Sat Oct 8 10:43:08 2005 UTC revision 295 by twoaday, Tue Mar 13 18:53:40 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) 2000-2007 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 "wptCardEdit.h"  #include "wptContext.h"
37    #include "wptCardEdit.h"
38  HINSTANCE glob_hinst; /* global instance for the dialogs */  #include "wptCrypto.h"
39  HWND glob_hwnd; /* global window handle for the dialogs */  #include "wptUTF8.h"
40  HWND activ_hwnd;  
41  LOCK mo_file;  void remove_crit_file_attrs (const char *fname, int force);
42  int scard_support = 0;  BOOL user_is_admin (void);
43  int debug = 0;  int  pcsc_available (void);
44  int mobile = 0;  
45  int gpg_read_only = 0;  /* Global variables. */
46  char gpgver[3];  HINSTANCE glob_hinst;   /* global instance for the dialogs */
47    HWND glob_hwnd;         /* global window handle for the dialogs */
48  /* Internal IPC */  int scard_support = 0;
49  int start_keymanager = 0;  int debug = 0;
50    int gpg_read_only = 0;
51  static void  int admin_user = 0;
52  update_keycache (HWND hwnd)  char gpgver[3];
53  {  /* End */
54      refresh_cache_s rcs = {0};  
55      rcs.kr_reload = 0;  
56      rcs.kr_update = 1;  /* Load the key cache and rebuild the signature cache. */
57      rcs.tr_update = 1;  int
58      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,  update_keycache (HWND hwnd)
59                      keycache_dlg_proc, (LPARAM)&rcs);  {
60  } /* update_keycache */      int err;
61        refresh_cache_s rcs;
62    
63  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */      /* no need to rebuild the sig cache each time. */
64  void      memset (&rcs, 0, sizeof (rcs));
65  gpg_set_debug_mode (int val)      rcs.kring_update = 1;
66  {            err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
67      if (val)                      keycache_dlg_proc, (LPARAM)&rcs);
68          putenv ("GPGME_DEBUG=5:gpgme.dbg");      if (err) {
69      else          char *cfgf = get_gnupg_config ();
70          putenv ("GPGME_DEBUG=");          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 char *          return -1;
74  get_gettext_lang (void)      }
75  {          return 0;
76      char * fname;  }
77      fname = get_reg_entry_mo ();  
78      if (!fname)  
79          return NULL;  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
80      return fname;  void
81  } /* get_gettext_lang */  gpg_set_debug_mode (int val)
82    {
83        static char buf[256];
84  static void      char tmp[128];
85  load_gettext (void)      
86  {      /* XXX: no gpgme.dbg is created. */
87      char *nls = NULL;      if (val > 0) {
88      char *file = NULL;          GetTempPath (DIM (tmp)-1, tmp);
89            _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
90      nls = get_gettext_lang ();          putenv (buf);
91      if (nls) {      }
92          set_gettext_file ("winpt", nls);      else
93          file = make_filename (nls, "winpt", "mo");          putenv ("GPGME_DEBUG=");
94          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {  }
95              msg_box (NULL, _("Could not initizalize file lock.\n"  
96                               "Native Language Support"),  
97                       _("WinPT Error"), MB_ERR);  /* Initialize the gettext sub system. */
98          }  static void
99          free_if_alloc (nls);  load_gettext (void)
100          free_if_alloc (file);  {
101      }      char *nls;
102  } /* load_gettext */  
103        /* Return the name of the gettext language file. */
104        nls = get_reg_entry_mo ();
105  /* check if the default key from the gpg.conf file is available in the      if (nls != NULL) {
106     keyring. if not, bail out because encryption won't work properly then. */          gettext_set_file ("winpt", nls);
107  static int          free_if_alloc (nls);
108  check_default_key (gpgme_keycache_t kc)      }
109  {  }
110      gpgme_key_t key;  
111      gpgme_error_t err = GPG_ERR_NO_ERROR;  
112      char * defkey;  /* Return true if the GPG environment is useable. */
113    static bool
114      defkey = get_gnupg_default_key ();  gpg_prefs_ok (void)
115      if (defkey)  {
116          err = gpgme_keycache_find_key (kc, defkey, 0, &key);      char *p;
117      free_if_alloc (defkey);  
118      return err? -1 : 0;      p = get_reg_entry_gpg4win ("gpg.exe");
119  } /* check_default_key */      if (!p || file_exist_check (p) != 0) {
120            free_if_alloc (p);
121            p = get_reg_entry_gpg ("gpgProgram");
122  /* Return the WinPT program file name (with full pathname). */          if (!p || file_exist_check (p) != 0) {
123  static const char *              free_if_alloc (p);
124  get_prog_part (const char * fname, int use_cwd)              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
125  {              return false;
126      static char program[1024];          }
127      char currdir[256], * cmd = NULL;      }
128      int j;      free_if_alloc (p);
129                p = get_reg_entry_gpg4win (NULL);
130      memset (currdir, 0, DIM (currdir));      if (!p || dir_exist_check (p) != 0) {
131      memset (program, 0, DIM (program));          free_if_alloc (p);
132                    p = get_reg_entry_gpg ("HomeDir");
133      if (use_cwd) {          if (!p || dir_exist_check (p) != 0) {
134          GetCurrentDirectory (DIM (currdir)-1, currdir);              free_if_alloc (p);
135          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);              log_debug ("gpg_prefs_ok: could not determine home directory");
136      }              return false;
137      else {          }
138          cmd = GetCommandLine ();      }
139          if (cmd == NULL)      free_if_alloc (p);
140              return NULL;      return true;
141          strncpy (currdir, cmd, 255);  }
142          j = strlen (currdir);  
143          while (j--) {  
144              if (currdir[j] == '\\')  /* Check gpg files if they are read-only and ask the user
145                  break;               if this should be corrected. */
146          }  static void
147          currdir[j] = 0;  check_readonly_attr (const char *homedir)
148          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);  {
149      }      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
150      return program;      char *file;
151  } /* get_prog_part */      int i;
152    
153        for (i=0; files[i] != NULL; i++) {
154  static int          file = make_filename (homedir, files[i], NULL);
155  check_crypto_engine (void)          remove_crit_file_attrs (file, 0);
156  {          free_if_alloc (file);
157      int ma=1, mi=4, pa=0; /* GPG 1.4.0 */      }
158      int rc;  }
159    
160      rc = check_gnupg_engine (&ma, &mi, &pa);  
161      if (rc == -1) {  /* Load the GPG environment. On the first start, some
162          msg_box (NULL, _("Could not read GnuPG version."), _("WinPT Error"), MB_ERR);     checks are performed to find out in what state GPG is.
163          return rc;     Return value: 0  everything OK.
164      }                   >0  fatal error.
165      else if (rc) {                   -1 public keyring is empty or does not exist. */
166          log_box (_("WinPT Error"), MB_ERR,  static int
167                   _("Sorry, you need a newer GPG version.\n"  load_gpg_env (void)
168                     "GPG version %d.%d.%d required GPG version 1.4.0"),  {
169                     ma, mi, pa);      SECURITY_ATTRIBUTES sec_attr;
170          return rc;      char *p;
171      }      char *pkr;
172      /* We enable smartcard support for GPG: 1.9.x or >= 1.4.0 */      int err = 0;
173      if (ma >= 1 && mi >= 4)  
174          scard_support = 1;      p = get_reg_entry_gpg4win ("gpg.exe");
175        if (!p)
176      gpgver[0] = ma;          return (1);
177      gpgver[1] = mi;      if (file_exist_check (p)) {
178      gpgver[2] = pa;          free_if_alloc (p);
179      return rc;          return (1);
180  } /* check_crypto_engine */      }
181        free_if_alloc (p);
182    
183  static int      p = get_reg_entry_gpg ("HomeDir");
184  load_keyserver_conf (int quiet)      if (!p || dir_exist_check (p) != 0) {
185  {          free_if_alloc (p);
186      const char * t;          p = multi_gnupg_path (0);
187      int rc;      }
188        if (p && dir_exist_check (p)) {
189      if (reg_prefs.kserv_conf)          memset (&sec_attr, 0, sizeof (sec_attr));
190          t = reg_prefs.kserv_conf;          sec_attr.nLength = sizeof (sec_attr);
191      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))          if (!CreateDirectory (p, &sec_attr)) {
192          t = get_prog_part ("keyserver.conf", 0);              msg_box (NULL, _("Could not create GPG home directory"),
193      else                       _("WinPT Error"), MB_ERR);
194          t = "keyserver.conf";              free_if_alloc (p);
195      rc = kserver_load_conf (t);              return (2);
196      if (rc && !quiet)          }
197          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);      }
198      return rc;      check_readonly_attr (p);
199  }      pkr = make_filename (p, "pubring", "gpg");
200        free_if_alloc (p);
201        if (get_file_size (pkr) == 0)
202  static void          err = -1;
203  enable_mobile_mode (void)      free_if_alloc (pkr);
204  {      return err;
205      memset (&reg_prefs, 0, sizeof (reg_prefs));  }
206      reg_prefs.always_trust = 0;  
207      reg_prefs.auto_backup = 0;  
208      reg_prefs.cache_time = 0;  /* check if the default key from the gpg.conf file is available in the
209      reg_prefs.expert = 0;     keyring. if not, bail out because encryption won't work properly then. */
210      reg_prefs.keylist_mode = 1;  static int
211      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");  check_default_key (void)
212      reg_prefs.no_zip_mmedia = 1;  {
213      reg_prefs.use_tmpfiles = 1;      gpgme_key_t key;
214      reg_prefs.word_wrap = 80;      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
215      reg_prefs.use_viewer = 0; /* XXX */      gpg_keycache_t kc;
216  }      char *defkey;
217    
218  char* get_subkey_fingerprint (gpgme_ctx_t ctx, const char *keyid);      kc = keycache_get_ctx (0);
219        defkey = get_gnupg_default_key ();
220  int WINAPI      if (defkey) {
221  #ifndef WINPT_IPC          err = gpg_keycache_find_key (kc, defkey, 0, &key);
222  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)          if (err) {
223  #else              free_if_alloc (defkey);
224  win_main (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)              return -1;
225  #endif          }
226  {      }
227      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};      else {
228      HACCEL accel_tab;          /* Actually this is just a warning but we still continue. */
229      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;          msg_box (NULL, _("No useable secret key found."),
230      int first_start = 0, start_gpgprefs = 0;                   _("WinPT Warning"), MB_WARN);
231      const char * s;          free_if_alloc (defkey);
232      MSG msg;          return 0;
233      HWND hwnd = NULL;      }
234    
235      glob_hinst = hinst;      /* Because the secret key listing has no information
236           about the validity/status, we need to check the public key. */
237      #ifdef _DEBUG      kc = keycache_get_ctx (1);
238      gpg_set_debug_mode (1);      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
239      debug = 1;          (key->revoked || key->expired)) {
240      #endif          msg_box (NULL, _("Default secret key is unuseable"),
241                     _("WinPT Warning"), MB_ERR);
242      s = PTD_get_version ();          free_if_alloc (defkey);
243      if (strcmp (s, "0.8.0")) {          return -1;
244          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,      }
245                   _("Please update your PTD.dll to the newest version, "      free_if_alloc (defkey);
246                     "the version (%s) you use is too old."), s);      return 0;
247          return 0;  }
248      }  
249    
250      if (gpg_md_selftest ()) {  /* Return the WinPT program file name (with full pathname). */
251          msg_box (NULL, _("Cryptographic selftest failed."),  static const char*
252                   _("WinPT Error"), MB_ERR);  get_prog_part (const char *fname, int use_cwd)
253          return 0;  {
254      }      static char program[2*MAX_PATH+1];
255        char currdir[MAX_PATH+1];
256      s = gpgme_check_version ("1.1.0");      char *cmd;
257      if (!s || !*s) {      int j;
258          msg_box (NULL, _("A newer GPGME version is needed."), "WinPT Error", MB_ERR);          
259          return 0;      memset (currdir, 0, DIM (currdir));
260      }      memset (program, 0, DIM (program));
261            
262      if (cmdline && stristr (cmdline, "--mobile")) {      if (use_cwd) {
263          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!",          GetCurrentDirectory (DIM (currdir)-1, currdir);
264                   "WinPT", MB_INFO);          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
265          mobile = 1;      }
266      }      else {
267            cmd = GetCommandLine ();
268      set_default_kserver ();          if (!cmd)
269                return NULL;
270      if (!mobile) {          strncpy (currdir, cmd, DIM (currdir)-1);
271          regist_inst_gnupg (1);          j = strlen (currdir);
272          regist_inst_winpt (1, &created);          while (j--) {
273      }              if (currdir[j] == '\\')
274      else {                  break;
275          enable_mobile_mode ();          }
276          /* XXX: ask for GPG path */          currdir[j] = 0;
277          created = 1; /* Disable registry writing */          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
278      }      }
279        return program;
280      if (!created) {  }
281          memset (&reg_prefs, 0, sizeof (reg_prefs));  
282          reg_prefs.use_tmpfiles = 1; /* default */  
283          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */  /* Check that the underlying crypto engine fullfills the minimal
284          get_reg_winpt_prefs (&reg_prefs);     requirements so all commands work properly. */
285          if (!reg_prefs.no_hotkeys)  static bool
286              hotkeys_modify ();  check_crypto_engine (void)
287      }  {
288        int ma = 0, mi = 0, pa = 0;
289      rc = gnupg_check_homedir ();      int rc;
290      if (rc) {  
291          log_box (_("WinPT Error"), MB_ERR,      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
292                   _("GPG home directory is not set correctly.\n"      if (rc == -1) {
293                     "Please check the GPG registry settings:\n%s."),          msg_box (NULL, _("Could not read GnuPG version."),
294                   winpt_strerror (rc));                   _("WinPT Error"), MB_ERR);
295          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,          return false;
296                                             _("Select GPG Public Keyring"),      }
297                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),      else if (rc) {
298                                             NULL);          log_box (_("WinPT Error"), MB_ERR,
299          if (s != NULL) {                   _("A newer GPG version is needed.\n"
300              size_t n;                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
301              char * p = strrchr (s, '\\');                     ma, mi, pa);
302              if (!p)          return false;
303                  BUG (0);      }
304              n = p - s;      /* Enable smart card support for GPG 2 or >= 1.4 */
305              if (n)      if ((ma > 1 || pa >= 4) && pcsc_available ())
306              {          scard_support = 1;
307                  char * file = new char[n+1];  
308                  if (!file)      gpgver[0] = ma;
309                      BUG (NULL);      gpgver[1] = mi;
310                  memset (file, 0, n);      gpgver[2] = pa;
311                  memcpy (file, s, n);      return true;
312                  file[n] = '\0';          }
313                  set_reg_entry_gpg ("HomeDir", file);  
314                  free_if_alloc (file);  
315                  gnupg_check_homedir (); /* change gpgProgram if needed */  /* Try to load the keyserver config file. If @quiet is 1
316              }     do not show any errors. */
317          }  static int
318          else {  load_keyserver_conf (int quiet)
319              msg_box (NULL, _("GPG home directory could not be determited."),  {    
320                       _("WinPT Error"), MB_ERR);      const char *t, *conf;
321              goto start;      char *buf;
322          }      int rc;
323      }  
324        #ifdef WINPT_MOBILE
325      rc = check_gnupg_prog ();      /* In mobile mode we automatically assume the config file
326      if (rc) {         in the current directory. */
327          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"      return kserver_load_conf ("keyserver.conf");
328                               "Do you want to start the GPG preferences to "      #endif
329                               "correct  this problem?"), _("WinPT Error"),  
330                               MB_INFO|MB_YESNO) == IDYES)      /* Create $APPDATA\winpt if needed. */
331              start_gpgprefs = 1;      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
332          else      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
333          {          MessageBox (NULL, _("Failed to create WinPT directory"),
334              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);                      _("Keyserver"), MB_ERR);
335              return 0;          free_if_alloc (buf);
336          }          return -1;
337      }      }
338        free_if_alloc (buf);
339      rc = gnupg_access_files ();  
340      if (!start_gpgprefs && rc)      /* Check for $APPDATA\winpt\keyserver.conf */
341      {      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
342          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)  
343          {      conf = get_prog_part ("keyserver.conf", 0);
344              ec = msg_box (NULL,      if (!file_exist_check (conf))
345                  _("Could not access and/or find the public and secret keyring.\n"          t = conf;
346                    "If this is an accident, quit the program and fix it.\n\n"      else
347                    "Continue if you want that WinPT offers you more choices.\n"),          t = "keyserver.conf";
348                    "WinPT", MB_INFO|MB_YESNO);      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
349              if (ec == IDYES)          if (!CopyFile (t, buf, FALSE)) {
350                  first_start = 1;              MessageBox (NULL, _("Failed to copy the keyserver.conf"),
351          }                          _("Keyserver"), MB_ERR);
352          if (!first_start)              free_if_alloc (buf);
353          {              return -1;
354              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);          }
355              return 0;          t = buf;
356          }      }
357      }      else
358            t = buf;
359      if (!first_start)      
360      {      rc = kserver_load_conf (t);
361          rc = gpg_check_permissions (1);      if (rc && !quiet)
362          if (rc && rc == 2)          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
363              gpg_read_only = 1;      else {
364          else if (rc)          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_gettext ();      return rc;
369      init_gnupg_table ();  }
370    
371      nfiles = fm_parse_command_line (cmdline);  
372      if (nfiles > 0)  /* Check if both keyrings are empty. This indicates that
373          return 0;     WinPT should offer to generate a key pair. */
374    static bool
375      if (cmdline && stristr (cmdline, "--wipe-freespace")) {  check_for_empty_keyrings (bool pub_only)
376          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,  {
377                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,      char *p;
378                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);      int n = 0;
379          free_gnupg_table ();  
380          return 0;      p = get_gnupg_keyring (1, 0);
381      }      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
382            n++;
383      load_keyserver_conf (cmdline? 1 : 0);      free_if_alloc (p);
384      if (start_keymanager) {      if (pub_only)
385          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,          return n == 1? true : false;
386                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      p = get_gnupg_keyring (0, 0);
387                              _("Key Manager"), IDS_WINPT_KEYMISC);      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
388          keycache_release ();          n++;
389          free_gnupg_table ();      free_if_alloc (p);
390          return 0;      return n==2? true : false;
391      }  }
392    
393      if (cmdline && (stristr (cmdline, "--keymanager")  
394                  || stristr (cmdline, "--cardmanager"))) {  #ifdef WINPT_MOBILE
395          update_keycache (GetDesktopWindow ());  /* Enable the mobile mode if possible.
396          if (stristr (cmdline, "keymanager"))     There are some constraints which must be fullfilled.
397              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,     Return value: 0 on success. */
398                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  static int
399                              _("Key Manager"), IDS_WINPT_KEYMISC);    enable_mobile_mode (void)
400          else {  {
401              gpg_card_t crd = smartcard_init ();      static const char *test_fname = "winpt_mobile_test.txt";
402              if (crd)      FILE *fp;
403                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      char *pubring;
404                                    GetDesktopWindow(), card_edit_dlg_proc,      ULARGE_INTEGER caller, total;
405                                    (LPARAM)crd, _("Card Manager"),      DWORD temp_size;
406                                    IDS_WINPT_CARD_EDIT);  
407              gpg_card_release (crd);      fp = fopen (test_fname, "wb");
408          }      if (fp == NULL) {
409          keycache_release ();          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
410          free_gnupg_table ();                            "for the current directory", "WinPT Error", MB_ERR);
411          return 0;              
412      }          return -1;
413        }
414      CreateMutex (NULL, TRUE, PGM_NAME);      fclose (fp);
415      if (GetLastError () == ERROR_ALREADY_EXISTS) {      DeleteFile (test_fname);
416          free_gnupg_table ();      if (file_exist_check ("gpg.exe")) {
417          return 0;          MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
418      }                            "as the WinPT program", "WinPT Error", MB_ERR);
419            return -1;
420      if (cmdline) {      }
421          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      
422              gpg_set_debug_mode (1);      /* Because write operations to the keyring result in a temporary
423              winpt_debug_msg ();         file, we need at least 2 MB plus the size of the keyring for
424              debug = 1;         free space. */
425          }      pubring = get_gnupg_keyring (1);
426      }      temp_size = get_file_size (pubring) + 2097152;
427        free_if_alloc (pubring);
428      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));  
429      rc = RegisterClass (&wc);      if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
430      if (rc == FALSE) {          caller.LowPart < temp_size) {
431          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);          log_box ("WinPT Error", MB_ERR,
432          free_gnupg_table ();                   "The mobile mode needs at least %lu KB for temporary files",
433          return 0;                   temp_size/1024);
434      }          return -1;
435        }
436      hwnd = CreateWindow (PGM_NAME,  
437                           PGM_NAME,      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
438                           0, 0, 0, 0, 0,  
439                           NULL,      return 0;
440                           NULL,  }
441                           hinst,  #endif
442                           NULL);  
443      if (hwnd == NULL) {  
444          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);  /* Set the default keyserver for this instance. */
445          free_gnupg_table ();  void
446          return 0;  set_default_keyserver (void)
447      }  {
448      glob_hwnd = hwnd;      char *host = get_reg_entry_keyserver ("Default");
449      UpdateWindow (hwnd);      char *str_port = get_reg_entry_keyserver ("Default_Port");
450        WORD port = HKP_PORT;
451      if (!first_start && !start_gpgprefs) {  
452          gnupg_backup_options ();              if (!host)
453          rc = check_crypto_engine ();          keyserver_set_default (NULL, 0);
454          if (rc) {      else {
455              DestroyWindow (hwnd);          if (str_port && *str_port)
456              free_gnupg_table ();              port = atoi (str_port);
457              return 0;          keyserver_set_default (host, port);
458          }      }
459      }      free_if_alloc (host);
460            free_if_alloc (str_port);
461      if (start_gpgprefs) {  }
462          char *ring;  
463          size_t size = 0;  
464          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  /* Display info message that WinPT is now in debug mode. */
465                          gpgprefs_dlg_proc, NULL);  void
466          ring = get_gnupg_keyring (0, !NO_STRICT);  winpt_debug_msg (void)
467          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)  {      
468              first_start = 1; /* The keyring is empty! */      char output[512];
469          free_if_alloc (ring);      char temp[128];
470      }          
471        GetTempPath (DIM (temp) -1, temp);
472      if (first_start) {      _snprintf (output, DIM (output)-1,
473          struct first_start_s fs;          "The GPGME output file is %sgpgme.dbg\n"
474          struct genkey_s c;          "The WinPT output file is %swinpt.log\n", temp, temp);
475          HWND h;      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
476  start:  }
477          h = GetDesktopWindow ();  
478          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,  
479                              gpgprefs_dlg_proc, NULL);  /* Search for insecure ElGamal keys and return the
480          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,     number of founded keys. */
481                          first_run_dlg_proc, (LPARAM)&fs);  static int
482          switch (fs.choice) {  count_insecure_elgkeys (void)
483          case SETUP_KEYGEN:  {
484              c.interactive = 1;      gpg_keycache_t pc;
485              c.first_start = 1;      gpgme_key_t key;
486              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,      int n = 0;
487                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);  
488              if (!rc)      pc = keycache_get_ctx (1);
489                  goto start;      while (!gpg_keycache_next_key (pc, 0, &key)) {
490              break;          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
491                n++;
492          case SETUP_IMPORT:      }
493              rc = gnupg_copy_keyrings ();      gpg_keycache_rewind (pc);
494              if (rc) {      return n;
495                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  }
496                  goto start;  
497              }  
498              break;  /* Main entry point. */
499    int WINAPI
500          case -1:  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
501              DestroyWindow (hwnd);  {
502              free_gnupg_table ();      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
503              return 0;      HACCEL accel_tab;
504          }      MSG msg;
505          update_keycache (hwnd);      HWND hwnd = NULL;
506          check_crypto_engine ();      WORD ver[3], ptdver[4];
507      }      const char *s;
508      else {      int rc, ec, created = 0;
509          gpgme_keycache_t c;      int first_start = 0, start_gpgprefs = 0;
510          update_keycache (hwnd);      int winpt_inst_found = 0;
511          c = keycache_get_ctx (1);      int start_manager = 0;    
512          if (!c || !gpgme_keycache_count (c)) {  
513              gnupg_display_error ();  #ifdef WINPT_MOBILE
514              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"      /* Do not continue in case of problems. */
515                               "Please check your GPG config (keyrings, pathes...)"),      if (enable_mobile_mode ())
516                               _("WinPT Error"), MB_ERR);          return 0;
517              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"  #endif
518                                    "Do you want to start the GPG preferences dialog?"),  
519                              "WinPT", MB_INFO|MB_YESNO);      glob_hinst = hinst;
520              if (ec == IDYES) {      if (cmdline && stristr (cmdline, "--stop")) {
521                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          hwnd = FindWindow ("WinPT", "WinPT");
522                                  gpgprefs_dlg_proc, NULL);          if (hwnd != NULL)
523                  update_keycache (hwnd);              PostMessage (hwnd, WM_DESTROY, 0, 0);
524              }          return 0;
525              else {      }
526                  DestroyWindow (hwnd);  
527                  free_gnupg_table ();  #ifdef _DEBUG
528                  return 0;      gpg_set_debug_mode (1);
529              }      debug = 1;
530          }  #endif
531          if (check_default_key (c)) {  
532              char * p = get_gnupg_default_key ();      get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
533              log_box (_("WinPT Error"), MB_ERR,      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
534                       _("Default key from the GPG options file could not be found.\n"                                   &ptdver[2], &ptdver[3]);
535                         "Please check your gpg.conf (options) to correct this:\n\n"      
536                         "%s: public key not found."), p? p : "[null]");      if (!ec && (ptdver[0] != ver[0] ||
537              free_if_alloc (p);                  ptdver[1] != ver[1] ||
538              DestroyWindow (hwnd);                  ptdver[2] != ver[2])) {
539              free_gnupg_table ();          log_box (_("WinPT Error"), MB_ERR,
540              return 0;                   _("The PTD.dll file has a different version than WinPT.exe\n"
541          }                     "Please update the PTD.dll to version %d.%d.%d"),
542          if (count_insecure_elgkeys ())                     ver[0], ver[1], ver[2]);
543              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,          return 0;
544                              elgamal_warn_dlg_proc, NULL);      }
545      }  
546        if (gpg_md_selftest ()) {
547      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);          msg_box (NULL, _("Cryptographic selftest failed."),
548      keyring_check_last_access (); /* init */                   _("WinPT Error"), MB_ERR);
549      while (GetMessage (&msg, hwnd, 0, 0)) {          return 0;
550          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      }
551              TranslateMessage (&msg);  
552              DispatchMessage (&msg);      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;          return 0;
557  } /* WinMain */      }
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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