/[winpt]/trunk/Src/WinPT.cpp
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revision 20 by twoaday, Wed Jul 27 11:17:22 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=4, pa=0; /* GPG 1.4.0 */  
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 required GPG version 1.4.0"),      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          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!", "WinPT", MB_INFO);          return -1;
248          mobile = 1;      }
249      }      free_if_alloc (defkey);
250        return 0;
251      set_default_kserver ();  }
252    
253      if (!mobile) {  
254          regist_inst_gnupg (1);  /* Return the WinPT program file name (with full pathname). */
255          regist_inst_winpt (1, &created);  static const char*
256      }  get_prog_part (const char *fname, int use_cwd)
257      else {  {
258          enable_mobile_mode ();      static char program[2*MAX_PATH+1];
259          /* XXX: ask for GPG path */      char currdir[MAX_PATH+1];
260          created = 1; /* Disable registry writing */      char *cmd = NULL;
261      }      int j;
262            
263      if (!created) {      memset (currdir, 0, DIM (currdir));
264          memset (&reg_prefs, 0, sizeof (reg_prefs));      memset (program, 0, DIM (program));
265          reg_prefs.use_tmpfiles = 1; /* default */          
266          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */      if (use_cwd) {
267          get_reg_winpt_prefs (&reg_prefs);          GetCurrentDirectory (DIM (currdir)-1, currdir);
268          if (!reg_prefs.no_hotkeys)          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
269              hotkeys_modify ();      }
270      }      else {
271            cmd = GetCommandLine ();
272      rc = gnupg_check_homedir ();          if (!cmd)
273      if (rc) {              return NULL;
274          log_box (_("WinPT Error"), MB_ERR,          strncpy (currdir, cmd, DIM (currdir)-1);
275                   _("GPG home directory is not set correctly.\n"          j = strlen (currdir);
276                     "Please check the GPG registry settings:\n%s."),          while (j--) {
277                   winpt_strerror (rc));              if (currdir[j] == '\\')
278          const char * s = get_filename_dlg (GetActiveWindow (), FILE_OPEN,                  break;
279                                             _("Select GPG Public Keyring"),          }
280                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),          currdir[j] = 0;
281                                             NULL);          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
282          if (s && !file_exist_check (s))      }
283          {      return program;
284              size_t n;  }
285              char * p = strrchr (s, '\\');  
286              if (!p)  
287                  BUG (0);  /* Check that the underlying crypto engine fullfills the minimal
288              n = p - s;     requirements so all commands work properly. */
289              if (n)  static bool
290              {  check_crypto_engine (void)
291                  char * file = new char[n+1];  {
292                  if (!file)      int ma = 0, mi = 0, pa = 0;
293                      BUG (NULL);      int rc;
294                  memset (file, 0, n);  
295                  memcpy (file, s, n);      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
296                  file[n] = '\0';              if (rc == -1) {
297                  set_reg_entry_gpg ("HomeDir", file);          msg_box (NULL, _("Could not read GnuPG version."),
298                  free_if_alloc (file);                   _("WinPT Error"), MB_ERR);
299                  gnupg_check_homedir (); /* change gpgProgram if needed */          return false;
300              }      }
301          }      else if (rc) {
302          else {          log_box (_("WinPT Error"), MB_ERR,
303              msg_box (NULL, _("GPG home directory could not be determited."),                   _("Sorry, you need a newer GPG version.\n"
304                       _("WinPT Error"), MB_ERR);                     "GPG version %d.%d.%d required GPG version "NEED_GPG_VERSION),
305              goto start;                     ma, mi, pa);
306          }          return false;
307      }      }
308        /* Enable smart card support for GPG 2 or >= 1.4 */
309      rc = check_gnupg_prog ();      if ((ma > 1 || pa >= 4) && pcsc_available ())
310      if (rc) {          scard_support = 1;
311          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  
312                               "Do you want to start the GPG preferences to "      gpgver[0] = ma;
313                               "correct  this problem?"), _("WinPT Error"),      gpgver[1] = mi;
314                               MB_INFO|MB_YESNO) == IDYES)      gpgver[2] = pa;
315              start_gpgprefs = 1;      return true;
316          else  }
317          {  
318              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  
319              return 0;  /* Try to load the keyserver config file. If @quiet is 1
320          }     do not show any errors. */
321      }  static int
322    load_keyserver_conf (int quiet)
323      rc = gnupg_access_files ();  {    
324      if (!start_gpgprefs && rc)      const char *t, *conf;
325      {      char *buf;
326          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS)      int rc;
327          {  
328              ec = msg_box (NULL,      #ifdef WINPT_MOBILE
329                  _("Could not access and/or find the public and secret keyring.\n"      /* In mobile mode we automatically assume the config file
330                    "If this is an accident, quit the program and fix it.\n\n"         in the current directory. */
331                    "Continue if you want that WinPT offers you more choices.\n"),      return kserver_load_conf ("keyserver.conf");
332                    "WinPT", MB_INFO|MB_YESNO);      #endif
333              if (ec == IDYES)  
334                  first_start = 1;      /* Create $APPDATA\winpt if needed. */
335          }      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
336          if (!first_start)      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
337          {          MessageBox (NULL, _("Failed to create WinPT directory"),
338              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);                      _("Keyserver"), MB_ERR);
339              return 0;          free_if_alloc (buf);
340          }          return -1;
341      }      }
342        free_if_alloc (buf);
343      if (!first_start)  
344      {      /* Check for $APPDATA\winpt\keyserver.conf */
345          rc = gpg_check_permissions (1);      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
346          if (rc && rc == 2)  
347              gpg_read_only = 1;      conf = get_prog_part ("keyserver.conf", 0);
348          else if (rc)      if (!file_exist_check (conf))
349              return 0;          t = conf;
350      }      else
351            t = "keyserver.conf";
352      load_gettext ();      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
353      init_gnupg_table ();          if (!CopyFile (t, buf, FALSE)) {
354                MessageBox (NULL, _("Failed to copy the keyserver.conf"),
355      nfiles = fm_parse_command_line (cmdline);                          _("Keyserver"), MB_ERR);
356      if (nfiles > 0)              free_if_alloc (buf);
357          return 0;              return -1;
358            }
359      if (cmdline && stristr (cmdline, "--wipe-freespace")) {          t = buf;
360          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      }
361                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,      else
362                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);          t = buf;
363          free_gnupg_table ();      
364          return 0;      rc = kserver_load_conf (t);
365      }      if (rc && !quiet)
366            msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
367      load_keyserver_conf (cmdline? 1 : 0);      else {
368      if (start_keymanager) {          free_if_alloc (reg_prefs.kserv_conf);
369          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,          reg_prefs.kserv_conf = m_strdup (t);
370                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      }
371                              _("Key Manager"), IDS_WINPT_KEYMISC);      free_if_alloc (buf);
372          keycache_release ();      return rc;
373          free_gnupg_table ();  }
374          return 0;  
375      }  
376    /* Check if both keyrings are empty. This indicates that
377      if (cmdline && (stristr (cmdline, "--keymanager")     WinPT should offer to generate a key pair. */
378                  || stristr (cmdline, "--cardmanager"))) {  static bool
379          update_keycache (GetDesktopWindow ());  check_for_empty_keyrings (bool pub_only)
380          if (stristr (cmdline, "keymanager"))  {
381              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      char *p;
382                              GetDesktopWindow(), keymanager_dlg_proc, NULL,      int n = 0;
383                              _("Key Manager"), IDS_WINPT_KEYMISC);    
384          else {      p = get_gnupg_keyring (1, 0);
385              gpgme_card_t crd = smartcard_init ();      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
386              if (crd)          n++;
387                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      free_if_alloc (p);
388                                    GetDesktopWindow(), card_edit_dlg_proc,      if (pub_only)
389                                    (LPARAM)crd, _("Card Manager"),          return n == 1? true : false;
390                                    IDS_WINPT_CARD_EDIT);      p = get_gnupg_keyring (0, 0);
391              gpgme_card_release (crd);      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
392          }          n++;
393          keycache_release ();      free_if_alloc (p);
394          free_gnupg_table ();      return n==2? true : false;
395          return 0;  }
396      }  
397    
398      CreateMutex (NULL, TRUE, PGM_NAME);  #ifdef WINPT_MOBILE
399      if (GetLastError () == ERROR_ALREADY_EXISTS) {  /* Enable the mobile mode if possible.
400          free_gnupg_table ();     There are some constraints which must be fullfilled.
401          return 0;     Return value: 0 on success. */
402      }  static int
403    enable_mobile_mode (void)
404      if (cmdline) {  {
405          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {      static const char *test_fname = "winpt_mobile_test.txt";
406              gpgme_set_debug_mode (1);      FILE *fp;
407              winpt_debug_msg ();      char *pubring;
408              debug = 1;      ULARGE_INTEGER caller, total;
409          }      DWORD temp_size;
410      }  
411        fp = fopen (test_fname, "wb");
412      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));      if (fp == NULL) {
413      rc = RegisterClass (&wc);          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
414      if (rc == FALSE) {                            "for the current directory", "WinPT Error", MB_ERR);
415          msg_box (NULL, _("Could not register window class"), _("WinPT Error"), MB_ERR);              
416          free_gnupg_table ();          return -1;
417          return 0;      }
418      }      fclose (fp);
419        DeleteFile (test_fname);
420      hwnd = CreateWindow (PGM_NAME,      if (file_exist_check ("gpg.exe")) {
421                           PGM_NAME,          MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
422                           0, 0, 0, 0, 0,                            "as the WinPT program", "WinPT Error", MB_ERR);
423                           NULL,          return -1;
424                           NULL,      }
425                           hinst,      
426                           NULL);      /* Because write operations to the keyring result in a temporary
427      if (hwnd == NULL) {         file, we need at least 2 MB plus the size of the keyring for
428          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);         free space. */
429          free_gnupg_table ();      pubring = get_gnupg_keyring (1);
430          return 0;      temp_size = get_file_size (pubring) + 2097152;
431      }      free_if_alloc (pubring);
432      glob_hwnd = hwnd;  
433      UpdateWindow (hwnd);      if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
434            caller.LowPart < temp_size) {
435      if (!first_start && !start_gpgprefs) {          log_box ("WinPT Error", MB_ERR,
436          gnupg_backup_options (1);                   "The mobile mode needs at least %lu KB for temporary files",
437          gnupg_backup_options (0);                   temp_size/1024);
438                    return -1;
439          rc = check_crypto_engine ();      }
440          if (rc) {  
441              DestroyWindow (hwnd);      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
442              free_gnupg_table ();  
443              return 0;      return 0;
444          }  }
445      }  #endif
446    
447      if (start_gpgprefs)  
448      {  /* Set the default keyserver for this instance. */
449          char *ring;  void
450          size_t size = 0;  set_default_keyserver (void)
451          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  {
452                          gpgprefs_dlg_proc, NULL);      char *host = get_reg_entry_keyserver ("Default");
453          ring = get_gnupg_keyring (0, !NO_STRICT);      char *str_port = get_reg_entry_keyserver ("Default_Port");
454          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)      WORD port = HKP_PORT;
455              first_start = 1; /* The keyring is empty! */  
456          free_if_alloc (ring);      if (!host)
457      }          keyserver_set_default (NULL, 0);
458        else {
459      if (first_start) {          if (str_port && *str_port)
460          struct key_wizard_s c, dummy;              port = atoi (str_port);
461  start:          keyserver_set_default (host, port);
462          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, hwnd,      }
463                          first_run_dlg_proc, (LPARAM)&dummy);      free_if_alloc (host);
464          switch (dummy.interactive)      free_if_alloc (str_port);
465          {  }
466          case SETUP_KEYGEN:  
467              c.interactive = 1;  
468              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,  /* Display info message that WinPT is now in debug mode. */
469                                   hwnd, keygen_wizard_dlg_proc, (LPARAM)&c);  void
470              if (!rc)  winpt_debug_msg (void)
471                  goto start;  {      
472              break;      char output[512];
473        char temp[128];
474          case SETUP_IMPORT:          
475              rc = gnupg_copy_keyrings ();      GetTempPath (DIM (temp) -1, temp);
476              if (rc) {      _snprintf (output, DIM (output)-1,
477                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);          "The GPGME output file is %sgpgme.dbg\n"
478                  goto start;          "The WinPT output file is %swinpt.log\n", temp, temp);
479              }      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
480              break;  }
481    
482          case SETUP_EXISTING:  
483              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  /* Search for insecure ElGamal keys and return the
484                              gpgprefs_dlg_proc, NULL);     number of founded keys. */
485              break;  static int
486    count_insecure_elgkeys (void)
487          case -1:  {
488              DestroyWindow (hwnd);      gpg_keycache_t pc;
489              free_gnupg_table ();      gpgme_key_t key;
490              return 0;      int n = 0;
491          }  
492          update_keycache (hwnd);      pc = keycache_get_ctx (1);
493          check_crypto_engine ();      while (!gpg_keycache_next_key (pc, 0, &key)) {
494      }          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
495      else {              n++;
496          gpgme_keycache_t c;      }
497          update_keycache (hwnd);      gpg_keycache_rewind (pc);
498          c = keycache_get_ctx (1);      return n;
499          if (!c || !gpgme_keycache_count (c)) {  }
500              gnupg_display_error ();  
501              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"  
502                               "Please check your GPG config (keyrings, pathes...)"),  /* Main entry point. */
503                               _("WinPT Error"), MB_ERR);  int WINAPI
504              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
505                                    "Do you want to start the GPG preferences dialog?"),  {
506                              "WinPT", MB_INFO|MB_YESNO);      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
507              if (ec == IDYES) {      HACCEL accel_tab;
508                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      MSG msg;
509                                  gpgprefs_dlg_proc, NULL);      HWND hwnd = NULL;
510                  update_keycache (hwnd);      WORD ver[3], ptdver[4];
511              }      const char *s;
512              else {      int rc, ec, created = 0;
513                  DestroyWindow (hwnd);      int first_start = 0, start_gpgprefs = 0;
514                  free_gnupg_table ();      int winpt_inst_found = 0;
515                  return 0;      int start_manager = 0;    
516              }  
517          }  #ifdef WINPT_MOBILE
518          if (check_default_key (c)) {      /* Do not continue in case of problems. */
519              char * p = get_gnupg_default_key ();      if (enable_mobile_mode ())
520              log_box (_("WinPT Error"), MB_ERR,          return 0;
521                       _("Default key from the GPG options file could not be found.\n"  #endif
522                         "Please check your gpg.conf (options) to correct this:\n\n"  
523                         "%s: public key not found."), p? p : "[null]");      glob_hinst = hinst;
524              free_if_alloc (p);      if (cmdline && stristr (cmdline, "--stop")) {
525              DestroyWindow (hwnd);          hwnd = FindWindow ("WinPT", "WinPT");
526              free_gnupg_table ();          if (hwnd != NULL)
527              return 0;              PostMessage (hwnd, WM_DESTROY, 0, 0);
528          }          return 0;
529          if (count_insecure_elgkeys ())      }
530              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,  
531                              elgamal_warn_dlg_proc, NULL);      #ifdef _DEBUG
532      }      gpg_set_debug_mode (1);
533        debug = 1;
534      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      #endif
535      keyring_check_last_access (); /* init */  
536      while (GetMessage (&msg, hwnd, 0, 0)) {      get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
537          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
538              TranslateMessage (&msg);                                   &ptdver[2], &ptdver[3]);
539              DispatchMessage (&msg);      
540          }      if (!ec && (ptdver[0] != ver[0] ||
541      }                  ptdver[1] != ver[1] ||
542                            ptdver[2] != ver[2])) {
543      return 0;          log_box (_("WinPT Error"), MB_ERR,
544  } /* WinMain */                   _("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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