/[winpt]/trunk/Src/WinPT.cpp
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revision 34 by twoaday, Wed Oct 26 11:20:09 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    #include "wptCrypto.h"
39  #define MIN_GPG_VER   "1.4.3"   /* Minimal GPG version. */  #include "wptUTF8.h"
40  #define MIN_GPGME_VER "1.2.0"   /* Minimal GPGME version. */  
41  #define MIN_PTD_VER   "0.8.1"   /* Minimal PTD version. */  void remove_crit_file_attrs (const char *fname, int force);
42    BOOL user_is_admin (void);
43    int  pcsc_available (void);
44  HINSTANCE glob_hinst;   /* global instance for the dialogs */  
45  HWND glob_hwnd;         /* global window handle for the dialogs */  /* Global variables. */
46  HWND activ_hwnd;  HINSTANCE glob_hinst;   /* global instance for the dialogs */
47  LOCK mo_file;  HWND glob_hwnd;         /* global window handle for the dialogs */
48  int scard_support = 0;  int scard_support = 0;
49  int debug = 0;  int debug = 0;
50  int mobile = 0;  int gpg_read_only = 0;
51  int gpg_read_only = 0;  int admin_user = 0;
52  char gpgver[3];  char gpgver[3];
53    /* End */
54    
55  /* Load the key cache and rebuild the signature cache. */  
56  static void  /* Load the key cache and rebuild the signature cache. */
57  update_keycache (HWND hwnd)  int
58  {  update_keycache (HWND hwnd)
59      refresh_cache_s rcs = {0};  {
60      rcs.kr_reload = 0;      int err;
61      rcs.kr_update = 1;      refresh_cache_s rcs;
62      rcs.tr_update = 1;  
63      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,      /* no need to rebuild the sig cache each time. */
64                      keycache_dlg_proc, (LPARAM)&rcs);      memset (&rcs, 0, sizeof (rcs));
65  }      rcs.kring_update = 1;
66        err = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, hwnd,
67                        keycache_dlg_proc, (LPARAM)&rcs);
68  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */      if (err) {
69  void          char *cfgf = get_gnupg_config ();
70  gpg_set_debug_mode (int val)          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      if (val)          free_if_alloc (cfgf);
73          putenv ("GPGME_DEBUG=5:gpgme.dbg");          return -1;
74      else      }
75          putenv ("GPGME_DEBUG=");      return 0;
76  }  }
77    
78    
79  /* Return the name of the gettext language file. */  /* Set GPGME debug mode. If @val is 0, the debug mode is disabled. */
80  static char*  void
81  get_gettext_lang (void)  gpg_set_debug_mode (int val)
82  {      {
83      char *fname;      static char buf[256];
84      fname = get_reg_entry_mo ();      char tmp[128];
85      if (!fname)      
86          return NULL;      /* XXX: no gpgme.dbg is created. */
87      return fname;      if (val > 0) {
88  }          GetTempPath (DIM (tmp)-1, tmp);
89            _snprintf (buf, DIM (buf)-1, "GPGME_DEBUG=5:%sgpgme.dbg", tmp);
90            putenv (buf);
91  /* Initialize the gettext sub system. */      }
92  static void      else
93  load_gettext (int prev_inst)          putenv ("GPGME_DEBUG=");
94  {  }
95      char *nls = NULL;  
96      char *file = NULL;  
97    /* Initialize the gettext sub system. */
98      nls = get_gettext_lang ();  static void
99      if (nls) {  load_gettext (void)
100          set_gettext_file ("winpt", nls);  {
101          file = make_filename (nls, "winpt", "mo");      char *nls;
102          if (!file_exist_check (nls) && init_file_lock (&mo_file, file))  {  
103              if (!prev_inst)      /* Return the name of the gettext language file. */
104                  msg_box (NULL, _("Could not initizalize file lock.\n"      nls = get_reg_entry_mo ();
105                                   "Native Language Support"),      if (nls != NULL) {
106                           _("WinPT Error"), MB_ERR);          gettext_set_file ("winpt", nls);
107          }          free_if_alloc (nls);
108          free_if_alloc (nls);      }
109          free_if_alloc (file);  }
110      }  
111  }  
112    /* Return true if the GPG environment is useable. */
113    static bool
114  /* check if the default key from the gpg.conf file is available in the  gpg_prefs_ok (void)
115     keyring. if not, bail out because encryption won't work properly then. */  {
116  static int      char *p;
117  check_default_key (gpg_keycache_t kc)  
118  {      p = get_reg_entry_gpg4win ("gpg.exe");
119      gpgme_key_t key;      if (!p || file_exist_check (p) != 0) {
120      gpgme_error_t err = GPG_ERR_NO_ERROR;          free_if_alloc (p);
121      char * defkey;          p = get_reg_entry_gpg ("gpgProgram");
122            if (!p || file_exist_check (p) != 0) {
123      defkey = get_gnupg_default_key ();              free_if_alloc (p);
124      if (defkey)              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
125          err = gpg_keycache_find_key (kc, defkey, 0, &key);              return false;
126      free_if_alloc (defkey);          }
127      return err? -1 : 0;      }
128  }      free_if_alloc (p);
129        p = get_reg_entry_gpg4win (NULL);
130        if (!p || dir_exist_check (p) != 0) {
131  /* Return the WinPT program file name (with full pathname). */          free_if_alloc (p);
132  static const char *          p = get_reg_entry_gpg ("HomeDir");
133  get_prog_part (const char * fname, int use_cwd)          if (!p || dir_exist_check (p) != 0) {
134  {              free_if_alloc (p);
135      static char program[512];              log_debug ("gpg_prefs_ok: could not determine home directory");
136      char currdir[256];              return false;
137      char *cmd = NULL;          }
138      int j;      }
139                free_if_alloc (p);
140      memset (currdir, 0, DIM (currdir));      return true;
141      memset (program, 0, DIM (program));  }
142            
143      if (use_cwd) {  
144          GetCurrentDirectory (DIM (currdir)-1, currdir);  /* Check gpg files if they are read-only and ask the user
145          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);     if this should be corrected. */
146      }  static void
147      else {  check_readonly_attr (const char *homedir)
148          cmd = GetCommandLine ();  {
149          if (cmd == NULL)      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
150              return NULL;      char *file;
151          strncpy (currdir, cmd, sizeof (currdir)-1);      int i;
152          j = strlen (currdir);  
153          while (j--) {      for (i=0; files[i] != NULL; i++) {
154              if (currdir[j] == '\\')          file = make_filename (homedir, files[i], NULL);
155                  break;          remove_crit_file_attrs (file, 0);
156          }          free_if_alloc (file);
157          currdir[j] = 0;      }
158          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);  }
159      }  
160      return program;  
161  }  /* Load the GPG environment. On the first start, some
162       checks are performed to find out in what state GPG is.
163       Return value: 0  everything OK.
164  /* Check that the underlying crypto engine fullfills the minimal                   >0  fatal error.
165     requirements so all commands work properly. */                   -1 public keyring is empty or does not exist. */
166  static int  static int
167  check_crypto_engine (void)  load_gpg_env (void)
168  {  {
169      int ma=1, mi=4, pa=3; /* GPG 1.4.3 */      SECURITY_ATTRIBUTES sec_attr;
170      int rc;      char *p;
171        char *pkr;
172      rc = check_gnupg_engine (&ma, &mi, &pa);      int err = 0;
173      if (rc == -1) {  
174          msg_box (NULL, _("Could not read GnuPG version."),      p = get_reg_entry_gpg4win ("gpg.exe");
175                   _("WinPT Error"), MB_ERR);      if (!p)
176          return rc;          return (1);
177      }      if (file_exist_check (p)) {
178      else if (rc) {          free_if_alloc (p);
179          log_box (_("WinPT Error"), MB_ERR,          return (1);
180                   _("Sorry, you need a newer GPG version.\n"      }
181                     "GPG version %d.%d.%d required GPG version "MIN_GPG_VER),      free_if_alloc (p);
182                     ma, mi, pa);  
183          return rc;      p = get_reg_entry_gpg ("HomeDir");
184      }      if (!p || dir_exist_check (p) != 0) {
185      /* We enable smartcard support for GPG: 1.9 or >= 1.4 */          free_if_alloc (p);
186      if (ma >= 1 && mi >= 4)          p = multi_gnupg_path (0);
187          scard_support = 1;      }
188        if (p && dir_exist_check (p)) {
189      gpgver[0] = ma;          memset (&sec_attr, 0, sizeof (sec_attr));
190      gpgver[1] = mi;          sec_attr.nLength = sizeof (sec_attr);
191      gpgver[2] = pa;          if (!CreateDirectory (p, &sec_attr)) {
192      return rc;              msg_box (NULL, _("Could not create GPG home directory"),
193  }                       _("WinPT Error"), MB_ERR);
194                free_if_alloc (p);
195                return (2);
196  /* Try to load the keyserver config file. If @quiet is 1          }
197     do not show any errors. */      }
198  static int      check_readonly_attr (p);
199  load_keyserver_conf (int quiet)      pkr = make_filename (p, "pubring", "gpg");
200  {      free_if_alloc (p);
201      const char * t;      if (get_file_size (pkr) == 0)
202      int rc;          err = -1;
203        free_if_alloc (pkr);
204      if (reg_prefs.kserv_conf)      return err;
205          t = reg_prefs.kserv_conf;  }
206      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))  
207          t = get_prog_part ("keyserver.conf", 0);  
208      else  /* check if the default key from the gpg.conf file is available in the
209          t = "keyserver.conf";     keyring. if not, bail out because encryption won't work properly then. */
210      rc = kserver_load_conf (t);  static int
211      if (rc && !quiet)  check_default_key (void)
212          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);  {
213      return rc;      gpgme_key_t key;
214  }      gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
215        gpg_keycache_t kc;
216        char *defkey;
217  /* Enable the mobility mode. */  
218  static void      kc = keycache_get_ctx (0);
219  enable_mobile_mode (void)      defkey = get_gnupg_default_key ();
220  {      if (defkey) {
221      memset (&reg_prefs, 0, sizeof (reg_prefs));          err = gpg_keycache_find_key (kc, defkey, 0, &key);
222      reg_prefs.always_trust = 0;          if (err) {
223      reg_prefs.auto_backup = 0;              free_if_alloc (defkey);
224      reg_prefs.cache_time = 0;              return -1;
225      reg_prefs.expert = 0;          }
226      reg_prefs.keylist_mode = 1;      }
227      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      else {
228      reg_prefs.no_zip_mmedia = 1;          /* Actually this is just a warning but we still continue. */
229      reg_prefs.use_tmpfiles = 1;          msg_box (NULL, _("No useable secret key found."),
230      reg_prefs.word_wrap = 80;                   _("WinPT Warning"), MB_WARN);
231      reg_prefs.use_viewer = 0; /* XXX */          free_if_alloc (defkey);
232  }          return 0;
233        }
234  char* multi_gnupg_path (void);  
235        /* Because the secret key listing has no information
236  /* Main entry point. */         about the validity/status, we need to check the public key. */
237  int WINAPI      kc = keycache_get_ctx (1);
238  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
239  {          (key->revoked || key->expired)) {
240      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};          msg_box (NULL, _("Default secret key is unuseable"),
241      HACCEL accel_tab;                   _("WinPT Warning"), MB_ERR);
242      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;          free_if_alloc (defkey);
243      int first_start = 0, start_gpgprefs = 0;          return -1;
244      int winpt_inst_found = 0;      }
245      const char *s;      free_if_alloc (defkey);
246      MSG msg;      return 0;
247      HWND hwnd = NULL;  }
248    
249      glob_hinst = hinst;  
250    /* Return the WinPT program file name (with full pathname). */
251      #ifdef _DEBUG  static const char*
252      gpg_set_debug_mode (1);  get_prog_part (const char *fname, int use_cwd)
253      debug = 1;  {
254      #endif      static char program[2*MAX_PATH+1];
255        char currdir[MAX_PATH+1];
256      s = PTD_get_version ();      char *cmd;
257      if (strcmp (s, MIN_PTD_VER)) {      int j;
258          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,          
259                   _("Please update your PTD.dll to the newest version, "      memset (currdir, 0, DIM (currdir));
260                     "the version (%s) you use is too old."), s);      memset (program, 0, DIM (program));
261          return 0;          
262      }      if (use_cwd) {
263            GetCurrentDirectory (DIM (currdir)-1, currdir);
264      if (gpg_md_selftest ()) {          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
265          msg_box (NULL, _("Cryptographic selftest failed."),      }
266                   _("WinPT Error"), MB_ERR);      else {
267          return 0;          cmd = GetCommandLine ();
268      }          if (!cmd)
269                return NULL;
270      s = gpgme_check_version (MIN_GPGME_VER);          strncpy (currdir, cmd, DIM (currdir)-1);
271      if (!s || !*s) {          j = strlen (currdir);
272          msg_box (NULL, _("A newer GPGME version is needed; at least "MIN_GPGME_VER),          while (j--) {
273                   _("WinPT Error"), MB_ERR);              if (currdir[j] == '\\')
274          return 0;                  break;
275      }          }
276            currdir[j] = 0;
277      CreateMutex (NULL, TRUE, PGM_NAME);          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
278      if (GetLastError () == ERROR_ALREADY_EXISTS)      }
279          winpt_inst_found = 1;      return program;
280    }
281      if (cmdline && stristr (cmdline, "--mobile")) {  
282          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!",  
283                   "WinPT", MB_INFO);  /* Check that the underlying crypto engine fullfills the minimal
284          mobile = 1;     requirements so all commands work properly. */
285      }  static bool
286    check_crypto_engine (void)
287      set_default_kserver ();  {
288        int ma = 0, mi = 0, pa = 0;
289      if (!mobile) {      int rc;
290          regist_inst_gnupg (1);  
291          regist_inst_winpt (1, &created);      rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
292      }      if (rc == -1) {
293      else {          msg_box (NULL, _("Could not read GnuPG version."),
294          enable_mobile_mode ();                   _("WinPT Error"), MB_ERR);
295          /* XXX: ask for GPG path */          return false;
296          created = 1; /* Disable registry writing */      }
297      }      else if (rc) {
298            log_box (_("WinPT Error"), MB_ERR,
299      if (!created) {                   _("A newer GPG version is needed.\n"
300          memset (&reg_prefs, 0, sizeof (reg_prefs));                     "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
301          reg_prefs.use_tmpfiles = 1; /* default */                     ma, mi, pa);
302          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          return false;
303          get_reg_winpt_prefs (&reg_prefs);      }
304          if (!reg_prefs.no_hotkeys)      /* Enable smart card support for GPG 2 or >= 1.4 */
305              hotkeys_modify ();      if ((ma > 1 || pa >= 4) && pcsc_available ())
306      }          scard_support = 1;
307    
308      rc = gnupg_check_homedir ();      gpgver[0] = ma;
309      if (rc) {      gpgver[1] = mi;
310          log_box (_("WinPT Error"), MB_ERR,      gpgver[2] = pa;
311                   _("GPG home directory is not set correctly.\n"      return true;
312                     "Please check the GPG registry settings:\n%s."),  }
313                   winpt_strerror (rc));  
314          const char * s = get_fileopen_dlg (GetActiveWindow (),  
315                                             _("Select GPG Public Keyring"),  /* Try to load the keyserver config file. If @quiet is 1
316                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),     do not show any errors. */
317                                             NULL);  static int
318          if (s != NULL) {  load_keyserver_conf (int quiet)
319              size_t n;  {    
320              char * p = strrchr (s, '\\');      const char *t, *conf;
321              if (!p)      char *buf;
322                  BUG (0);      int rc;
323              n = p - s;  
324              if (n) {      #ifdef WINPT_MOBILE
325                  char * file = new char[n+1];      /* In mobile mode we automatically assume the config file
326                  if (!file)         in the current directory. */
327                      BUG (NULL);      return kserver_load_conf ("keyserver.conf");
328                  memset (file, 0, n);      #endif
329                  memcpy (file, s, n);  
330                  file[n] = '\0';              /* Create $APPDATA\winpt if needed. */
331                  set_reg_entry_gpg ("HomeDir", file);      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
332                  free_if_alloc (file);      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
333                  gnupg_check_homedir (); /* change gpgProgram if needed */          MessageBox (NULL, _("Failed to create WinPT directory"),
334              }                      _("Keyserver"), MB_ERR);
335          }          free_if_alloc (buf);
336          else {          return -1;
337              msg_box (NULL, _("GPG home directory could not be determited."),      }
338                       _("WinPT Error"), MB_ERR);      free_if_alloc (buf);
339              goto start;  
340          }      /* Check for $APPDATA\winpt\keyserver.conf */
341      }      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
342    
343      rc = check_gnupg_prog ();      conf = get_prog_part ("keyserver.conf", 0);
344      if (rc) {      if (!file_exist_check (conf))
345          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"          t = conf;
346                               "Do you want to start the GPG preferences to "      else
347                               "correct  this problem?"), _("WinPT Error"),          t = "keyserver.conf";
348                               MB_INFO|MB_YESNO) == IDYES)      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
349              start_gpgprefs = 1;          if (!CopyFile (t, buf, FALSE)) {
350          else              MessageBox (NULL, _("Failed to copy the keyserver.conf"),
351          {                          _("Keyserver"), MB_ERR);
352              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);              free_if_alloc (buf);
353              return 0;              return -1;
354          }          }
355      }          t = buf;
356        }
357      rc = gnupg_access_files ();      else
358      if (!start_gpgprefs && rc) {          t = buf;
359          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {      
360              ec = msg_box (NULL,      rc = kserver_load_conf (t);
361                  _("Could not access and/or find the public and secret keyring.\n"      if (rc && !quiet)
362                    "If this is an accident, quit the program and fix it.\n\n"          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
363                    "Continue if you want that WinPT offers you more choices.\n"),      else {
364                    "WinPT", MB_INFO|MB_YESNO);          free_if_alloc (reg_prefs.kserv_conf);
365              if (ec == IDYES)          reg_prefs.kserv_conf = m_strdup (t);
366                  first_start = 1;      }
367          }      free_if_alloc (buf);
368          if (!first_start) {      return rc;
369              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  }
370              return 0;  
371          }  
372      }  /* Check if both keyrings are empty. This indicates that
373       WinPT should offer to generate a key pair. */
374      if (!first_start) {  static bool
375          rc = gpg_check_permissions (1);  check_for_empty_keyrings (bool pub_only)
376          if (rc && rc == 2)  {
377              gpg_read_only = 1;      char *p;
378          else if (rc)      int n = 0;
379              return 0;  
380      }      p = get_gnupg_keyring (1, 0);
381        if (file_exist_check (p) == 0 && get_file_size (p) == 0)
382      load_gettext (winpt_inst_found);          n++;
383      init_gnupg_table ();      free_if_alloc (p);
384        if (pub_only)
385      nfiles = fm_parse_command_line (cmdline);          return n == 1? true : false;
386      if (nfiles > 0) {      p = get_gnupg_keyring (0, 0);
387          free_gnupg_table ();      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
388          return 0;          n++;
389      }      free_if_alloc (p);
390        return n==2? true : false;
391      if (cmdline && stristr (cmdline, "--wipe-freespace")) {  }
392          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,  
393                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,  
394                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);  #ifdef WINPT_MOBILE
395          free_gnupg_table ();  /* Enable the mobile mode if possible.
396          return 0;     There are some constraints which must be fullfilled.
397      }     Return value: 0 on success. */
398    static int
399      load_keyserver_conf (cmdline? 1 : 0);  enable_mobile_mode (void)
400    {
401      if (cmdline && (stristr (cmdline, "--keymanager")      static const char *test_fname = "winpt_mobile_test.txt";
402                  || stristr (cmdline, "--cardmanager"))) {      FILE *fp;
403          update_keycache (GetDesktopWindow ());      char *pubring;
404          if (stristr (cmdline, "keymanager"))      ULARGE_INTEGER caller, total;
405              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,      DWORD temp_size;
406                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  
407                              _("Key Manager"), IDS_WINPT_KEYMISC);        fp = fopen (test_fname, "wb");
408          else {      if (fp == NULL) {
409              gpg_card_t crd = gpg_card_load ();          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
410              if (crd)                            "for the current directory", "WinPT Error", MB_ERR);
411                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,              
412                                    GetDesktopWindow(), card_edit_dlg_proc,          return -1;
413                                    (LPARAM)crd, _("Card Manager"),      }
414                                    IDS_WINPT_CARD_EDIT);      fclose (fp);
415              gpg_card_release (crd);      DeleteFile (test_fname);
416          }      if (file_exist_check ("gpg.exe")) {
417          keycache_release (0);          MessageBox (NULL, "The GnuPG program needs to be in the same directory\n"
418          free_gnupg_table ();                            "as the WinPT program", "WinPT Error", MB_ERR);
419          return 0;          return -1;
420      }      }
421        
422      /* If we found another WinPT instance, just quit to avoid it      /* Because write operations to the keyring result in a temporary
423         will be executed twice. */         file, we need at least 2 MB plus the size of the keyring for
424      if (winpt_inst_found) {         free space. */
425          log_debug ("%s", "WinMain: WinPT is already running.");      pubring = get_gnupg_keyring (1);
426          free_gnupg_table ();      temp_size = get_file_size (pubring) + 2097152;
427          return 0;      free_if_alloc (pubring);
428      }  
429        if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
430      if (cmdline) {          caller.LowPart < temp_size) {
431          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {          log_box ("WinPT Error", MB_ERR,
432              gpg_set_debug_mode (1);                   "The mobile mode needs at least %lu KB for temporary files",
433              winpt_debug_msg ();                   temp_size/1024);
434              debug = 1;          return -1;
435          }      }
436      }  
437        /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
438      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));  
439      rc = RegisterClass (&wc);      return 0;
440      if (rc == FALSE) {  }
441          msg_box (NULL, _("Could not register window class"),  #endif
442                   _("WinPT Error"), MB_ERR);  
443          free_gnupg_table ();  
444          return 0;  /* Set the default keyserver for this instance. */
445      }  void
446    set_default_keyserver (void)
447      hwnd = CreateWindow (PGM_NAME,  {
448                           PGM_NAME,      char *host = get_reg_entry_keyserver ("Default");
449                           0, 0, 0, 0, 0,      char *str_port = get_reg_entry_keyserver ("Default_Port");
450                           NULL,      WORD port = HKP_PORT;
451                           NULL,  
452                           hinst,      if (!host)
453                           NULL);          keyserver_set_default (NULL, 0);
454      if (hwnd == NULL) {      else {
455          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);          if (str_port && *str_port)
456          free_gnupg_table ();              port = atoi (str_port);
457          return 0;          keyserver_set_default (host, port);
458      }      }
459      glob_hwnd = hwnd;      free_if_alloc (host);
460      UpdateWindow (hwnd);      free_if_alloc (str_port);
461    }
462      if (!first_start && !start_gpgprefs) {  
463          gnupg_backup_options ();          
464          rc = check_crypto_engine ();  /* Display info message that WinPT is now in debug mode. */
465          if (rc) {  void
466              DestroyWindow (hwnd);  winpt_debug_msg (void)
467              free_gnupg_table ();  {      
468              return 0;      char output[512];
469          }      char temp[128];
470      }          
471            GetTempPath (DIM (temp) -1, temp);
472      if (start_gpgprefs) {      _snprintf (output, DIM (output)-1,
473          char *ring;          "The GPGME output file is %sgpgme.dbg\n"
474          size_t size = 0;          "The WinPT output file is %swinpt.log\n", temp, temp);
475          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
476                          gpgprefs_dlg_proc, NULL);  }
477          ring = get_gnupg_keyring (0, !NO_STRICT);  
478          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)  
479              first_start = 1; /* The keyring is empty! */  /* Search for insecure ElGamal keys and return the
480          free_if_alloc (ring);     number of founded keys. */
481      }  static int
482    count_insecure_elgkeys (void)
483      if (first_start) {  {
484          struct first_start_s fs;      gpg_keycache_t pc;
485          struct genkey_s c;      gpgme_key_t key;
486          HWND h;      int n = 0;
487  start:  
488          h = GetDesktopWindow ();      pc = keycache_get_ctx (1);
489          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,      while (!gpg_keycache_next_key (pc, 0, &key)) {
490                              gpgprefs_dlg_proc, NULL);          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
491          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,              n++;
492                          first_run_dlg_proc, (LPARAM)&fs);      }
493          switch (fs.choice) {      gpg_keycache_rewind (pc);
494          case SETUP_KEYGEN:      return n;
495              c.interactive = 1;  }
496              c.first_start = 1;  
497              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,  
498                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);  /* Main entry point. */
499              if (!rc)  int WINAPI
500                  goto start;  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
501              break;  {
502        WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};
503          case SETUP_IMPORT:      HACCEL accel_tab;
504              rc = gnupg_copy_keyrings ();      MSG msg;
505              if (rc) {      HWND hwnd = NULL;
506                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      WORD ver[3], ptdver[4];
507                  goto start;      const char *s;
508              }      int rc, ec, created = 0;
509              break;      int first_start = 0, start_gpgprefs = 0;
510        int winpt_inst_found = 0;
511          case -1:      int start_manager = 0;    
512              DestroyWindow (hwnd);  
513              free_gnupg_table ();  #ifdef WINPT_MOBILE
514              return 0;      /* Do not continue in case of problems. */
515          }      if (enable_mobile_mode ())
516          update_keycache (hwnd);          return 0;
517          check_crypto_engine ();  #endif
518      }  
519      else {      glob_hinst = hinst;
520          gpg_keycache_t c;      if (cmdline && stristr (cmdline, "--stop")) {
521          update_keycache (hwnd);          hwnd = FindWindow ("WinPT", "WinPT");
522          c = keycache_get_ctx (1);          if (hwnd != NULL)
523          if (!c || !gpg_keycache_get_size (c)) {              PostMessage (hwnd, WM_DESTROY, 0, 0);
524              gnupg_display_error ();          return 0;
525              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"      }
526                               "Please check your GPG config (keyrings, pathes...)"),  
527                               _("WinPT Error"), MB_ERR);  #ifdef _DEBUG
528              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"      gpg_set_debug_mode (1);
529                                    "Do you want to start the GPG preferences dialog?"),      debug = 1;
530                              "WinPT", MB_INFO|MB_YESNO);  #endif
531              if (ec == IDYES) {  
532                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,      get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
533                                  gpgprefs_dlg_proc, NULL);      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
534                  update_keycache (hwnd);                                   &ptdver[2], &ptdver[3]);
535              }      
536              else {      if (!ec && (ptdver[0] != ver[0] ||
537                  DestroyWindow (hwnd);                  ptdver[1] != ver[1] ||
538                  free_gnupg_table ();                  ptdver[2] != ver[2])) {
539                  return 0;          log_box (_("WinPT Error"), MB_ERR,
540              }                   _("The PTD.dll file has a different version than WinPT.exe\n"
541          }                     "Please update the PTD.dll to version %d.%d.%d"),
542          if (check_default_key (c)) {                     ver[0], ver[1], ver[2]);
543              char * p = get_gnupg_default_key ();          return 0;
544              log_box (_("WinPT Error"), MB_ERR,      }
545                       _("Default key from the GPG options file could not be found.\n"  
546                         "Please check your gpg.conf (options) to correct this:\n\n"      if (gpg_md_selftest ()) {
547                         "%s: public key not found."), p? p : "[null]");          msg_box (NULL, _("Cryptographic selftest failed."),
548              free_if_alloc (p);                   _("WinPT Error"), MB_ERR);
549              DestroyWindow (hwnd);          return 0;
550              free_gnupg_table ();      }
551              return 0;  
552          }      s = gpgme_check_version (NEED_GPGME_VERSION);
553          if (count_insecure_elgkeys ())      if (!s || !*s) {
554              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,          msg_box (NULL, _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
555                              elgamal_warn_dlg_proc, NULL);                   _("WinPT Error"), MB_ERR);
556      }          return 0;
557        }
558      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);  
559      keyring_check_last_access (); /* init */      CreateMutex (NULL, TRUE, PGM_NAME);
560      while (GetMessage (&msg, hwnd, 0, 0)) {      if (GetLastError () == ERROR_ALREADY_EXISTS)
561          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {          winpt_inst_found = 1;
562              TranslateMessage (&msg);      
563              DispatchMessage (&msg);      set_default_keyserver ();
564          }      load_gettext ();
565      }      admin_user = user_is_admin ();
566            
567      return 0;      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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