/[winpt]/trunk/Src/WinPT.cpp
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revision 32 by twoaday, Mon Oct 24 08:03:48 2005 UTC revision 278 by twoaday, Mon Jan 15 22:02:04 2007 UTC
# Line 1  Line 1 
1  /* WinPT.cpp - Windows Privacy Tray (WinPT)  /* WinPT.cpp - Windows Privacy Tray (WinPT)
2   *      Copyright (C) 2000-2005 Timo Schulz   *      Copyright (C) 2000-2006 Timo Schulz
3   *   *
4   * This file is part of WinPT.   * This file is part of WinPT.
5   *   *
6   * WinPT is free software; you can redistribute it and/or modify   * WinPT is free software; you can redistribute it and/or modify
7   * it under the terms of the GNU General Public License as published by   * it under the terms of the GNU General Public License as published by
8   * the Free Software Foundation; either version 2 of the License, or   * the Free Software Foundation; either version 2 of the License, or
9   * (at your option) any later version.   * (at your option) any later version.
10   *   *
11   * WinPT is distributed in the hope that it will be useful,   * WinPT is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License for more details.   * GNU General Public License for more details.
15   *   */
16   * You should have received a copy of the GNU General Public License  #ifdef HAVE_CONFIG_H
17   * along with WinPT; if not, write to the Free Software Foundation,  #include <config.h>
18   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA  #endif
19   */  
20  #include <windows.h>  #include <windows.h>
21    #include <shlobj.h>
22  #include "../resource.h"  
23  #include "wptTypes.h"  #include "resource.h"
24  #include "wptW32API.h"  #include "wptTypes.h"
25  #include "wptVersion.h"  #include "wptW32API.h"
26  #include "wptErrors.h"  #include "wptVersion.h"
27  #include "wptGPG.h"  #include "wptErrors.h"
28  #include "wptRegistry.h"  #include "wptGPG.h"
29  #include "wptCommonCtl.h"  #include "wptRegistry.h"
30  #include "wptDlgs.h"  #include "wptCommonCtl.h"
31  #include "wptNLS.h"  #include "wptDlgs.h"
32  #include "wptKeyserver.h"  #include "wptNLS.h"
33  #include "wptCard.h"  #include "wptKeyserver.h"
34  #include "wptFileManager.h"  #include "wptCard.h"
35  #include "wptContext.h"  #include "wptFileManager.h"
36  #include "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 (void)          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              msg_box (NULL, _("Could not initizalize file lock.\n"      /* Return the name of the gettext language file. */
104                               "Native Language Support"),      nls = get_reg_entry_mo ();
105                       _("WinPT Error"), MB_ERR);      if (nls != NULL) {
106          }          gettext_set_file ("winpt", nls);
107          free_if_alloc (nls);          free_if_alloc (nls);
108          free_if_alloc (file);      }
109      }  }
110  }  
111    
112    /* Return true if the GPG environment is useable. */
113  /* check if the default key from the gpg.conf file is available in the  static bool
114     keyring. if not, bail out because encryption won't work properly then. */  gpg_prefs_ok (void)
115  static int  {
116  check_default_key (gpg_keycache_t kc)      char *p;
117  {  
118      gpgme_key_t key;      p = get_reg_entry_gpg4win ("gpg.exe");
119      gpgme_error_t err = GPG_ERR_NO_ERROR;      if (!p || file_exist_check (p) != 0) {
120      char * defkey;          free_if_alloc (p);
121            p = get_reg_entry_gpg ("gpgProgram");
122      defkey = get_gnupg_default_key ();          if (!p || file_exist_check (p) != 0) {
123      if (defkey)              free_if_alloc (p);
124          err = gpg_keycache_find_key (kc, defkey, 0, &key);              log_debug ("gpg_prefs_ok: could not locate gpg.exe");
125      free_if_alloc (defkey);              return false;
126      return err? -1 : 0;          }
127  }      }
128        free_if_alloc (p);
129        p = get_reg_entry_gpg4win (NULL);
130  /* Return the WinPT program file name (with full pathname). */      if (!p || dir_exist_check (p) != 0) {
131  static const char *          free_if_alloc (p);
132  get_prog_part (const char * fname, int use_cwd)          p = get_reg_entry_gpg ("HomeDir");
133  {          if (!p || dir_exist_check (p) != 0) {
134      static char program[512];              free_if_alloc (p);
135      char currdir[256];              log_debug ("gpg_prefs_ok: could not determine home directory");
136      char *cmd = NULL;              return false;
137      int j;          }
138                }
139      memset (currdir, 0, DIM (currdir));      free_if_alloc (p);
140      memset (program, 0, DIM (program));      return true;
141            }
142      if (use_cwd) {  
143          GetCurrentDirectory (DIM (currdir)-1, currdir);  
144          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);  /* Check gpg files if they are read-only and ask the user
145      }     if this should be corrected. */
146      else {  static void
147          cmd = GetCommandLine ();  check_readonly_attr (const char *homedir)
148          if (cmd == NULL)  {
149              return NULL;      const char *files[] = {"pubring.gpg", "secring.gpg", "trustdb.gpg", NULL};
150          strncpy (currdir, cmd, sizeof (currdir)-1);      char *file;
151          j = strlen (currdir);      int i;
152          while (j--) {  
153              if (currdir[j] == '\\')      for (i=0; files[i] != NULL; i++) {
154                  break;          file = make_filename (homedir, files[i], NULL);
155          }          remove_crit_file_attrs (file, 0);
156          currdir[j] = 0;          free_if_alloc (file);
157          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);      }
158      }  }
159      return program;  
160  }  
161    /* Load the GPG environment. On the first start, some
162       checks are performed to find out in what state GPG is.
163  /* Check that the underlying crypto engine fullfills the minimal     Return value: 0  everything OK.
164     requirements so all commands work properly. */                   >0  fatal error.
165  static int                   -1 public keyring is empty or does not exist. */
166  check_crypto_engine (void)  static int
167  {  load_gpg_env (void)
168      int ma=1, mi=4, pa=3; /* GPG 1.4.3 */  {
169      int rc;      SECURITY_ATTRIBUTES sec_attr;
170        char *p;
171      rc = check_gnupg_engine (&ma, &mi, &pa);      char *pkr;
172      if (rc == -1) {      int err = 0;
173          msg_box (NULL, _("Could not read GnuPG version."),  
174                   _("WinPT Error"), MB_ERR);      p = get_reg_entry_gpg4win ("gpg.exe");
175          return rc;      if (!p)
176      }          return (1);
177      else if (rc) {      if (file_exist_check (p)) {
178          log_box (_("WinPT Error"), MB_ERR,          free_if_alloc (p);
179                   _("Sorry, you need a newer GPG version.\n"          return (1);
180                     "GPG version %d.%d.%d required GPG version "MIN_GPG_VER),      }
181                     ma, mi, pa);      free_if_alloc (p);
182          return rc;  
183      }      p = get_reg_entry_gpg ("HomeDir");
184      /* We enable smartcard support for GPG: 1.9 or >= 1.4 */      if (!p || dir_exist_check (p) != 0) {
185      if (ma >= 1 && mi >= 4)          free_if_alloc (p);
186          scard_support = 1;          p = multi_gnupg_path (0);
187        }
188      gpgver[0] = ma;      if (p && dir_exist_check (p)) {
189      gpgver[1] = mi;          memset (&sec_attr, 0, sizeof (sec_attr));
190      gpgver[2] = pa;          sec_attr.nLength = sizeof (sec_attr);
191      return rc;          if (!CreateDirectory (p, &sec_attr)) {
192  }              msg_box (NULL, _("Could not create GPG home directory"),
193                         _("WinPT Error"), MB_ERR);
194                free_if_alloc (p);
195  /* Try to load the keyserver config file. If @quiet is 1              return (2);
196     do not show any errors. */          }
197  static int      }
198  load_keyserver_conf (int quiet)      check_readonly_attr (p);
199  {      pkr = make_filename (p, "pubring", "gpg");
200      const char * t;      free_if_alloc (p);
201      int rc;      if (get_file_size (pkr) == 0)
202            err = -1;
203      if (reg_prefs.kserv_conf)      free_if_alloc (pkr);
204          t = reg_prefs.kserv_conf;      return err;
205      else if (!file_exist_check (get_prog_part ("keyserver.conf", 0)))  }
206          t = get_prog_part ("keyserver.conf", 0);  
207      else  
208          t = "keyserver.conf";  /* check if the default key from the gpg.conf file is available in the
209      rc = kserver_load_conf (t);     keyring. if not, bail out because encryption won't work properly then. */
210      if (rc && !quiet)  static int
211          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);  check_default_key (void)
212      return rc;  {
213  }      gpgme_key_t key;
214        gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR);
215        gpg_keycache_t kc;
216  /* Enable the mobility mode. */      char *defkey;
217  static void  
218  enable_mobile_mode (void)      kc = keycache_get_ctx (0);
219  {      defkey = get_gnupg_default_key ();
220      memset (&reg_prefs, 0, sizeof (reg_prefs));      if (defkey) {
221      reg_prefs.always_trust = 0;          err = gpg_keycache_find_key (kc, defkey, 0, &key);
222      reg_prefs.auto_backup = 0;          if (err) {
223      reg_prefs.cache_time = 0;              free_if_alloc (defkey);
224      reg_prefs.expert = 0;              return -1;
225      reg_prefs.keylist_mode = 1;          }
226      reg_prefs.kserv_conf = m_strdup ("keyserver.conf");      }
227      reg_prefs.no_zip_mmedia = 1;      else {
228      reg_prefs.use_tmpfiles = 1;          /* Actually this is just a warning but we still continue. */
229      reg_prefs.word_wrap = 80;          msg_box (NULL, _("No useable secret key found."),
230      reg_prefs.use_viewer = 0; /* XXX */                   _("WinPT Warning"), MB_WARN);
231  }          free_if_alloc (defkey);
232            return 0;
233        }
234  /* Main entry point. */  
235  int WINAPI      /* Because the secret key listing has no information
236  WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)         about the validity/status, we need to check the public key. */
237  {      kc = keycache_get_ctx (1);
238      WNDCLASS wc = {0, winpt_main_proc, 0, 0, hinst, 0, 0, 0, 0, PGM_NAME};      if (!gpg_keycache_find_key (kc, defkey, 0, &key) &&
239      HACCEL accel_tab;          (key->revoked || key->expired)) {
240      int rc, ec, created = 0, use_cwd = 0, nfiles = 0;          msg_box (NULL, _("Default secret key is unuseable"),
241      int first_start = 0, start_gpgprefs = 0;                   _("WinPT Warning"), MB_ERR);
242      const char * s;          free_if_alloc (defkey);
243      MSG msg;          return -1;
244      HWND hwnd = NULL;      }
245        free_if_alloc (defkey);
246      glob_hinst = hinst;      return 0;
247    }
248      #ifdef _DEBUG  
249      gpg_set_debug_mode (1);  
250      debug = 1;  /* Return the WinPT program file name (with full pathname). */
251      #endif  static const char*
252    get_prog_part (const char *fname, int use_cwd)
253      s = PTD_get_version ();  {
254      if (strcmp (s, MIN_PTD_VER)) {      static char program[2*MAX_PATH+1];
255          log_box (_("Privacy Tray Dynamic (PTD)"), MB_ERR,      char currdir[MAX_PATH+1];
256                   _("Please update your PTD.dll to the newest version, "      char *cmd = NULL;
257                     "the version (%s) you use is too old."), s);      int j;
258          return 0;          
259      }      memset (currdir, 0, DIM (currdir));
260        memset (program, 0, DIM (program));
261      if (gpg_md_selftest ()) {          
262          msg_box (NULL, _("Cryptographic selftest failed."),      if (use_cwd) {
263                   _("WinPT Error"), MB_ERR);          GetCurrentDirectory (DIM (currdir)-1, currdir);
264          return 0;          _snprintf (program, DIM (program)-1, "%s\\%s", currdir, fname);
265      }      }
266        else {
267      s = gpgme_check_version (MIN_GPGME_VER);          cmd = GetCommandLine ();
268      if (!s || !*s) {          if (!cmd)
269          msg_box (NULL, _("A newer GPGME version is needed; at least "MIN_GPGME_VER),              return NULL;
270                   _("WinPT Error"), MB_ERR);          strncpy (currdir, cmd, DIM (currdir)-1);
271          return 0;          j = strlen (currdir);
272      }          while (j--) {
273                if (currdir[j] == '\\')
274      if (cmdline && stristr (cmdline, "--mobile")) {                  break;
275          msg_box (NULL, "WARNING: mobile modus is not fully implemented yet!",          }
276                   "WinPT", MB_INFO);          currdir[j] = 0;
277          mobile = 1;          _snprintf (program, DIM (program)-1, "%s\\%s", currdir + 1, fname);
278      }      }
279        return program;
280      set_default_kserver ();  }
281    
282      if (!mobile) {  
283          regist_inst_gnupg (1);  /* Check that the underlying crypto engine fullfills the minimal
284          regist_inst_winpt (1, &created);     requirements so all commands work properly. */
285      }  static bool
286      else {  check_crypto_engine (void)
287          enable_mobile_mode ();  {
288          /* XXX: ask for GPG path */      int ma = 0, mi = 0, pa = 0;
289          created = 1; /* Disable registry writing */      int rc;
290      }  
291        rc = check_gnupg_engine (NEED_GPG_VERSION, &ma, &mi, &pa);
292      if (!created) {      if (rc == -1) {
293          memset (&reg_prefs, 0, sizeof (reg_prefs));          msg_box (NULL, _("Could not read GnuPG version."),
294          reg_prefs.use_tmpfiles = 1; /* default */                   _("WinPT Error"), MB_ERR);
295          reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */          return false;
296          get_reg_winpt_prefs (&reg_prefs);      }
297          if (!reg_prefs.no_hotkeys)      else if (rc) {
298              hotkeys_modify ();          log_box (_("WinPT Error"), MB_ERR,
299      }                   _("A newer GPG version is needed.\n"
300                       "Current GPG version %d.%d.%d, required "NEED_GPG_VERSION),
301      rc = gnupg_check_homedir ();                     ma, mi, pa);
302      if (rc) {          return false;
303          log_box (_("WinPT Error"), MB_ERR,      }
304                   _("GPG home directory is not set correctly.\n"      /* Enable smart card support for GPG 2 or >= 1.4 */
305                     "Please check the GPG registry settings:\n%s."),      if ((ma > 1 || pa >= 4) && pcsc_available ())
306                   winpt_strerror (rc));          scard_support = 1;
307          const char * s = get_fileopen_dlg (GetActiveWindow (),  
308                                             _("Select GPG Public Keyring"),      gpgver[0] = ma;
309                                             _("GPG Keyrings (*.gpg)\0*.gpg\0\0"),      gpgver[1] = mi;
310                                             NULL);      gpgver[2] = pa;
311          if (s != NULL) {      return true;
312              size_t n;  }
313              char * p = strrchr (s, '\\');  
314              if (!p)  
315                  BUG (0);  /* Try to load the keyserver config file. If @quiet is 1
316              n = p - s;     do not show any errors. */
317              if (n)  static int
318              {  load_keyserver_conf (int quiet)
319                  char * file = new char[n+1];  {    
320                  if (!file)      const char *t, *conf;
321                      BUG (NULL);      char *buf;
322                  memset (file, 0, n);      int rc;
323                  memcpy (file, s, n);  
324                  file[n] = '\0';              #ifdef WINPT_MOBILE
325                  set_reg_entry_gpg ("HomeDir", file);      /* In mobile mode we automatically assume the config file
326                  free_if_alloc (file);         in the current directory. */
327                  gnupg_check_homedir (); /* change gpgProgram if needed */      return kserver_load_conf ("keyserver.conf");
328              }      #endif
329          }  
330          else {      /* Create $APPDATA\winpt if needed. */
331              msg_box (NULL, _("GPG home directory could not be determited."),      buf = make_special_filename (CSIDL_APPDATA, "winpt", NULL);
332                       _("WinPT Error"), MB_ERR);      if (buf && dir_exist_check (buf) && !CreateDirectory (buf, NULL)) {
333              goto start;          MessageBox (NULL, _("Failed to create WinPT directory"),
334          }                      _("Keyserver"), MB_ERR);
335      }          free_if_alloc (buf);
336            return -1;
337      rc = check_gnupg_prog ();      }
338      if (rc) {      free_if_alloc (buf);
339          if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"  
340                               "Do you want to start the GPG preferences to "      /* Check for $APPDATA\winpt\keyserver.conf */
341                               "correct  this problem?"), _("WinPT Error"),      buf = make_special_filename (CSIDL_APPDATA, "winpt\\keyserver.conf", NULL);
342                               MB_INFO|MB_YESNO) == IDYES)  
343              start_gpgprefs = 1;      conf = get_prog_part ("keyserver.conf", 0);
344          else      if (!file_exist_check (conf))
345          {          t = conf;
346              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      else
347              return 0;          t = "keyserver.conf";
348          }      if (file_exist_check (t) == 0 && file_exist_check (buf) != 0) {
349      }          if (!CopyFile (t, buf, FALSE)) {
350                MessageBox (NULL, _("Failed to copy the keyserver.conf"),
351      rc = gnupg_access_files ();                          _("Keyserver"), MB_ERR);
352      if (!start_gpgprefs && rc) {              free_if_alloc (buf);
353          if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {              return -1;
354              ec = msg_box (NULL,          }
355                  _("Could not access and/or find the public and secret keyring.\n"          t = buf;
356                    "If this is an accident, quit the program and fix it.\n\n"      }
357                    "Continue if you want that WinPT offers you more choices.\n"),      else
358                    "WinPT", MB_INFO|MB_YESNO);          t = buf;
359              if (ec == IDYES)      
360                  first_start = 1;      rc = kserver_load_conf (t);
361          }      if (rc && !quiet)
362          if (!first_start) {          msg_box (NULL, winpt_strerror (rc), _("Keyserver"), MB_ERR);
363              msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);      else {
364              return 0;          free_if_alloc (reg_prefs.kserv_conf);
365          }          reg_prefs.kserv_conf = m_strdup (t);
366      }      }
367        free_if_alloc (buf);
368      if (!first_start) {      return rc;
369          rc = gpg_check_permissions (1);  }
370          if (rc && rc == 2)  
371              gpg_read_only = 1;  
372          else if (rc)  /* Check if both keyrings are empty. This indicates that
373              return 0;     WinPT should offer to generate a key pair. */
374      }  static bool
375    check_for_empty_keyrings (bool pub_only)
376      load_gettext ();  {
377      init_gnupg_table ();      char *p;
378        int n = 0;
379      nfiles = fm_parse_command_line (cmdline);  
380      if (nfiles > 0) {      p = get_gnupg_keyring (1, 0);
381          free_gnupg_table ();      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
382          return 0;          n++;
383      }      free_if_alloc (p);
384        if (pub_only)
385      if (cmdline && stristr (cmdline, "--wipe-freespace")) {          return n == 1? true : false;
386          dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,      p = get_gnupg_keyring (0, 0);
387                              GetDesktopWindow(), space_wipefrees_dlg_proc, NULL,      if (file_exist_check (p) == 0 && get_file_size (p) == 0)
388                              _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);          n++;
389          free_gnupg_table ();      free_if_alloc (p);
390          return 0;      return n==2? true : false;
391      }  }
392    
393      load_keyserver_conf (cmdline? 1 : 0);  
394    #ifdef WINPT_MOBILE
395      if (cmdline && (stristr (cmdline, "--keymanager")  /* Enable the mobile mode if possible.
396                  || stristr (cmdline, "--cardmanager"))) {     There are some constraints which must be fullfilled.
397          update_keycache (GetDesktopWindow ());     Return value: 0 on success. */
398          if (stristr (cmdline, "keymanager"))  static int
399              dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_KEYMISC,  enable_mobile_mode (void)
400                              GetDesktopWindow(), keymanager_dlg_proc, NULL,  {
401                              _("Key Manager"), IDS_WINPT_KEYMISC);        static const char *test_fname = "winpt_mobile_test.txt";
402          else {      FILE *fp;
403              gpg_card_t crd = gpg_card_load ();      char *pubring;
404              if (crd)      ULARGE_INTEGER caller, total;
405                  dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_CARD_EDIT,      DWORD temp_size;
406                                    GetDesktopWindow(), card_edit_dlg_proc,  
407                                    (LPARAM)crd, _("Card Manager"),      fp = fopen (test_fname, "wb");
408                                    IDS_WINPT_CARD_EDIT);      if (fp == NULL) {
409              gpg_card_release (crd);          MessageBox (NULL, "Mobile mode cannot be used without write permission\n"
410          }                            "for the current directory", "WinPT Error", MB_ERR);
411          keycache_release (0);              
412          free_gnupg_table ();          return -1;
413          return 0;      }
414      }      fclose (fp);
415        DeleteFile (test_fname);
416      CreateMutex (NULL, TRUE, PGM_NAME);      if (file_exist_check ("gpg.exe")) {
417      if (GetLastError () == ERROR_ALREADY_EXISTS) {          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 (cmdline) {      /* Because write operations to the keyring result in a temporary
423          if (stristr (cmdline, "--enable-debug") || stristr (cmdline, "--debug")) {         file, we need at least 2 MB plus the size of the keyring for
424              gpg_set_debug_mode (1);         free space. */
425              winpt_debug_msg ();      pubring = get_gnupg_keyring (1);
426              debug = 1;      temp_size = get_file_size (pubring) + 2097152;
427          }      free_if_alloc (pubring);
428      }  
429        if (!GetDiskFreeSpaceEx (NULL, &caller, &total, NULL) ||
430      wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));          caller.LowPart < temp_size) {
431      rc = RegisterClass (&wc);          log_box ("WinPT Error", MB_ERR,
432      if (rc == FALSE) {                   "The mobile mode needs at least %lu KB for temporary files",
433          msg_box (NULL, _("Could not register window class"),                   temp_size/1024);
434                   _("WinPT Error"), MB_ERR);          return -1;
435          free_gnupg_table ();      }
436          return 0;  
437      }      /* XXX: shall we check for 'temp-directory' in the gpg.conf? */
438    
439      hwnd = CreateWindow (PGM_NAME,      return 0;
440                           PGM_NAME,  }
441                           0, 0, 0, 0, 0,  #endif
442                           NULL,  
443                           NULL,  
444                           hinst,  /* Set the default keyserver for this instance. */
445                           NULL);  void
446      if (hwnd == NULL) {  set_default_keyserver (void)
447          msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);  {
448          free_gnupg_table ();      char *host = get_reg_entry_keyserver ("Default");
449          return 0;      char *str_port = get_reg_entry_keyserver ("Default_Port");
450      }      WORD port = HKP_PORT;
451      glob_hwnd = hwnd;  
452      UpdateWindow (hwnd);      if (!host)
453            keyserver_set_default (NULL, 0);
454      if (!first_start && !start_gpgprefs) {      else {
455          gnupg_backup_options ();                  if (str_port && *str_port)
456          rc = check_crypto_engine ();              port = atoi (str_port);
457          if (rc) {          keyserver_set_default (host, port);
458              DestroyWindow (hwnd);      }
459              free_gnupg_table ();      free_if_alloc (host);
460              return 0;      free_if_alloc (str_port);
461          }  }
462      }  
463        
464      if (start_gpgprefs) {  /* Display info message that WinPT is now in debug mode. */
465          char *ring;  void
466          size_t size = 0;  winpt_debug_msg (void)
467          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,  {      
468                          gpgprefs_dlg_proc, NULL);      char output[512];
469          ring = get_gnupg_keyring (0, !NO_STRICT);      char temp[128];
470          if (gnupg_access_keyring (0) == -1 && get_file_size (ring) == 0)          
471              first_start = 1; /* The keyring is empty! */      GetTempPath (DIM (temp) -1, temp);
472          free_if_alloc (ring);      _snprintf (output, DIM (output)-1,
473      }          "The GPGME output file is %sgpgme.dbg\n"
474            "The WinPT output file is %swinpt.log\n", temp, temp);
475      if (first_start) {      MessageBox (NULL, output, "WinPT now runs in DEBUG MODE", MB_INFO);
476          struct first_start_s fs;  }
477          struct genkey_s c;  
478          HWND h;  
479  start:  /* Search for insecure ElGamal keys and return the
480          h = GetDesktopWindow ();     number of founded keys. */
481          DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,  static int
482                              gpgprefs_dlg_proc, NULL);  count_insecure_elgkeys (void)
483          DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,  {
484                          first_run_dlg_proc, (LPARAM)&fs);      gpg_keycache_t pc;
485          switch (fs.choice) {      gpgme_key_t key;
486          case SETUP_KEYGEN:      int n = 0;
487              c.interactive = 1;  
488              c.first_start = 1;      pc = keycache_get_ctx (1);
489              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,      while (!gpg_keycache_next_key (pc, 0, &key)) {
490                                   h, keygen_wizard_dlg_proc, (LPARAM)&c);          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
491              if (!rc)              n++;
492                  goto start;      }
493              break;      gpg_keycache_rewind (pc);
494        return n;
495          case SETUP_IMPORT:  }
496              rc = gnupg_copy_keyrings ();  
497              if (rc) {  
498                  msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);  /* Main entry point. */
499                  goto start;  int WINAPI
500              }  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 -1:      HACCEL accel_tab;
504              DestroyWindow (hwnd);      MSG msg;
505              free_gnupg_table ();      HWND hwnd = NULL;
506              return 0;      WORD ver[3], ptdver[4];
507          }      const char *s;
508          update_keycache (hwnd);      int rc, ec, created = 0;
509          check_crypto_engine ();      int first_start = 0, start_gpgprefs = 0;
510      }      int winpt_inst_found = 0;
511      else {      int start_manager = 0;    
512          gpg_keycache_t c;  
513          update_keycache (hwnd);  #ifdef WINPT_MOBILE
514          c = keycache_get_ctx (1);      /* Do not continue in case of problems. */
515          if (!c || !gpg_keycache_get_size (c)) {      if (enable_mobile_mode ())
516              gnupg_display_error ();          return 0;
517              msg_box (hwnd, _("The keycache was not initialized or is empty.\n"  #endif
518                               "Please check your GPG config (keyrings, pathes...)"),  
519                               _("WinPT Error"), MB_ERR);      glob_hinst = hinst;
520              ec = msg_box (NULL, _("It seems that GPG is not set properly.\n"      if (cmdline && stristr (cmdline, "--stop")) {
521                                    "Do you want to start the GPG preferences dialog?"),          hwnd = FindWindow ("WinPT", "WinPT");
522                              "WinPT", MB_INFO|MB_YESNO);          if (hwnd != NULL)
523              if (ec == IDYES) {              PostMessage (hwnd, WM_DESTROY, 0, 0);
524                  DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,          return 0;
525                                  gpgprefs_dlg_proc, NULL);      }
526                  update_keycache (hwnd);  
527              }  #ifdef _DEBUG
528              else {      gpg_set_debug_mode (1);
529                  DestroyWindow (hwnd);      debug = 1;
530                  free_gnupg_table ();  #endif
531                  return 0;  
532              }      get_file_version ("WinPT.exe", &ver[0], &ver[1], &ver[2], &ver[3]);
533          }      ec = get_file_version ("PTD.dll", &ptdver[0], &ptdver[1],  
534          if (check_default_key (c)) {                                   &ptdver[2], &ptdver[3]);
535              char * p = get_gnupg_default_key ();      
536              log_box (_("WinPT Error"), MB_ERR,      if (!ec && (ptdver[0] != ver[0] ||
537                       _("Default key from the GPG options file could not be found.\n"                  ptdver[1] != ver[1] ||
538                         "Please check your gpg.conf (options) to correct this:\n\n"                  ptdver[2] != ver[2])) {
539                         "%s: public key not found."), p? p : "[null]");          log_box (_("WinPT Error"), MB_ERR,
540              free_if_alloc (p);                   _("The PTD.dll file has a different version than WinPT.exe\n"
541              DestroyWindow (hwnd);                     "Please update the PTD.dll to version %d.%d.%d"),
542              free_gnupg_table ();                     ver[0], ver[1], ver[2]);
543              return 0;          return 0;
544          }      }
545          if (count_insecure_elgkeys ())  
546              DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,      if (gpg_md_selftest ()) {
547                              elgamal_warn_dlg_proc, NULL);          msg_box (NULL, _("Cryptographic selftest failed."),
548      }                   _("WinPT Error"), MB_ERR);
549            return 0;
550      accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);      }
551      keyring_check_last_access (); /* init */  
552      while (GetMessage (&msg, hwnd, 0, 0)) {      s = gpgme_check_version (NEED_GPGME_VERSION);
553          if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {      if (!s || !*s) {
554              TranslateMessage (&msg);          msg_box (NULL, _("A newer GPGME version is needed; at least "NEED_GPGME_VERSION),
555              DispatchMessage (&msg);                   _("WinPT Error"), MB_ERR);
556          }          return 0;
557      }      }
558            
559      return 0;      CreateMutex (NULL, TRUE, PGM_NAME);
560  }      if (GetLastError () == ERROR_ALREADY_EXISTS)
561            winpt_inst_found = 1;
562        
563        set_default_keyserver ();
564        load_gettext ();
565        admin_user = user_is_admin ();
566    
567        regist_inst_gnupg (1);
568        regist_inst_winpt (1, &created);
569    
570        if (!created) {
571            memset (&reg_prefs, 0, sizeof (reg_prefs));
572            get_reg_winpt_prefs (&reg_prefs);
573            reg_prefs.fm.progress = 0; /* XXX: fix the bug and enable it again */
574            if (gnupg_load_config () == -2)
575                msg_box (NULL, _("The gpg.conf file contains the 'textmode' option\n"
576                                 "which leads to broken binary output during decryption.\n"
577                                 "If this is on purpose, just continue otherwise the option should be disabled."),
578                                _("WinPT Error"), MB_ERR);
579        }
580    
581        if (is_gpg4win_installed ())
582            load_gpg_env (); /* XXX: check return code. */
583    
584        rc = gnupg_check_homedir ();
585        if (rc) {
586            char *p;
587    
588            log_box (_("WinPT Error"), MB_ERR,
589                     _("GPG home directory is not set correctly.\n"
590                       "Please check the GPG registry settings:\n%s."),
591                     winpt_strerror (rc));
592            s = get_fileopen_dlg (GetActiveWindow (),
593                                  _("Select GPG Public Keyring"),
594                                  "GPG Keyrings (*.gpg)\0*.gpg\0\0",
595                                  NULL);
596            if (s != NULL && (p=strrchr (s, '\\'))) {
597                char *path = substr (s, 0, (p-s));
598    
599                set_reg_entry_gpg ("HomeDir", path);
600                free_if_alloc (path);
601            }
602            else {
603                msg_box (NULL, _("GPG home directory could not be determined."),
604                         _("WinPT Error"), MB_ERR);
605                goto start;
606            }
607        }
608    
609        rc = check_gnupg_prog ();
610        if (rc) {
611            if (msg_box (NULL, _("Could not find the GPG binary (gpg.exe).\n"
612                                 "Do you want to start the GPG preferences to "
613                                 "correct  this problem?"), _("WinPT Error"),
614                                 MB_INFO|MB_YESNO) == IDYES)
615                start_gpgprefs = 1;
616            else {
617                msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
618                return 0;
619            }
620        }
621    
622        rc = gnupg_access_files ();
623        if (!start_gpgprefs && rc) {
624            if (rc == WPTERR_GPG_KEYRINGS || rc == WPTERR_GPG_OPT_KEYRINGS) {
625                ec = msg_box (NULL,
626                    _("Could not access and/or find the public and secret keyring.\n"
627                      "If this is an accident, quit the program and fix it.\n\n"
628                      "Continue if you want WinPT to offer you more choices.\n"),
629                      "WinPT", MB_INFO|MB_YESNO);
630                if (ec == IDYES)
631                    first_start = 1;
632            }
633            if (!first_start) {
634                msg_box (NULL, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
635                return 0;
636            }
637        }
638        if (check_for_empty_keyrings (false))
639            first_start = 1;
640    
641        if (!first_start) {
642            rc = gpg_check_permissions (1);
643            if (rc && rc == 2) /* 2 means read-only mode. */
644                gpg_read_only = 1;
645            else if (rc)
646                return 0;
647        }
648        
649        init_gnupg_table ();
650    
651        if (fm_parse_command_line (cmdline) > 0) {
652            free_gnupg_table ();
653            return 0;
654        }
655    
656        if (cmdline && stristr (cmdline, "--wipe-freespace")) {
657            dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_SPACE_SECDEL,
658                                GetDesktopWindow(), space_wipefrees_dlg_proc, 0,
659                                _("Wipe Free Space"), IDS_WINPT_SPACE_SECDEL);
660            free_gnupg_table ();
661            return 0;
662        }
663    
664        load_keyserver_conf (cmdline? 1 : 0);
665    
666        if (cmdline && (stristr (cmdline, "--keymanager")
667                    || stristr (cmdline, "--cardmanager"))) {
668            /* If an instance of WinPT is running, just send the command
669               to open the key manager. Otherwise start a new instance. */
670            HWND tray = FindWindow ("WinPT", "WinPT");
671            if (stristr (cmdline, "keymanager"))
672                start_manager = ID_WINPT_KEY;
673            else
674                start_manager = ID_WINPT_CARD;
675            if (tray != NULL) {
676                PostMessage (tray, WM_COMMAND, start_manager, 0);
677                free_gnupg_table ();
678                return 0;
679            }
680        }
681    
682        /* If we found another WinPT instance, just quit to avoid it
683           will be executed twice. */
684        if (winpt_inst_found) {
685            log_debug ("%s", "WinMain: WinPT is already running.");
686            free_gnupg_table ();
687            return 0;
688        }
689    
690    #ifndef WINPT_MOBILE
691        if (cmdline && (stristr (cmdline, "--enable-debug") ||
692                        stristr (cmdline, "--debug"))) {
693            gpg_set_debug_mode (1);
694            winpt_debug_msg ();
695            debug = 1;
696        }
697    #endif
698    
699        wc.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (IDI_WINPT));
700        rc = RegisterClass (&wc);
701        if (rc == FALSE) {
702            msg_box (NULL, _("Could not register window class"),
703                     _("WinPT Error"), MB_ERR);
704            free_gnupg_table ();
705            return 0;
706        }
707    
708        hwnd = CreateWindow (PGM_NAME,
709                             PGM_NAME,
710                             0, 0, 0, 0, 0,
711                             NULL,
712                             NULL,
713                             hinst,
714                             NULL);
715        if (hwnd == NULL) {
716            msg_box (NULL, _("Could not create window"), _("WinPT Error"), MB_ERR);
717            free_gnupg_table ();
718            return 0;
719        }
720        glob_hwnd = hwnd;
721        UpdateWindow (hwnd);
722    
723        if (!first_start && !start_gpgprefs) {
724            gnupg_backup_options ();        
725            if (!check_crypto_engine ()) {
726                DestroyWindow (hwnd);
727                free_gnupg_table ();
728                return 0;
729            }
730        }
731        
732        if (start_gpgprefs) {
733            DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
734                            gpgprefs_dlg_proc, 0);
735            if (check_for_empty_keyrings (true))
736                first_start = 1; /* The public keyring is empty. */
737        }
738    
739        if (first_start) {
740            struct genkey_s c;
741            int choice;
742            HWND h;
743    start:
744            h = GetDesktopWindow ();
745            if (!gpg_prefs_ok ())
746                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, h,
747                                gpgprefs_dlg_proc, 0);
748            choice = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_FIRST, h,
749                                     first_run_dlg_proc, 0);
750            switch (choice) {
751            case SETUP_KEYGEN:
752                c.interactive = 1;
753                c.first_start = 1;
754                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYWIZARD,
755                                     h, keygen_wizard_dlg_proc, (LPARAM)&c);
756                if (!rc)
757                    goto start;
758                break;
759    
760            case SETUP_IMPORT:
761                rc = gnupg_copy_keyrings ();
762                if (rc) {
763                    msg_box (hwnd, winpt_strerror (rc), _("WinPT Error"), MB_ERR);
764                    goto start;
765                }
766                break;
767    
768            case SETUP_CARDGEN:
769                rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_CARD_KEYGEN,
770                                     h, card_keygen_dlg_proc, 0);
771                if (!rc)
772                    goto start;
773                break;
774    
775            case 0: /* Cancel/Abort. */
776            default:
777                DestroyWindow (hwnd);
778                free_gnupg_table ();
779                return 0;
780            }
781            update_keycache (hwnd);
782            if (!check_crypto_engine ()) {
783                DestroyWindow (hwnd);
784                free_gnupg_table ();
785                keycache_release (1);
786                return 0;
787            }
788            if (!is_gpg4win_installed ()) {
789                select_language ();
790                load_gettext ();
791            }
792        }
793        else {
794            gpg_keycache_t c;
795            if (update_keycache (hwnd)) {
796                DestroyWindow (hwnd);
797                free_gnupg_table ();
798                keycache_release (1);
799                return 0;
800            }
801            /* XXX: rewrite this part. */
802            c = keycache_get_ctx (1);
803            if (!gpg_keycache_get_size (c)) {
804                msg_box (hwnd, _("The keycache was not initialized or is empty.\n"
805                                 "Please check your GPG config (keyrings, pathes...)"),
806                                 _("WinPT Error"), MB_ERR);
807                ec = msg_box (NULL, _("It seems that GPG is not configured properly.\n"
808                                      "Do you want to start the GPG preferences dialog?"),
809                                "WinPT", MB_INFO|MB_YESNO);
810                if (ec == IDYES) {
811                    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_GPGPREFS, hwnd,
812                                    gpgprefs_dlg_proc, 0);
813                    update_keycache (hwnd);
814                }
815                else {
816                    DestroyWindow (hwnd);
817                    free_gnupg_table ();
818                    keycache_release (1);
819                    return 0;
820                }
821            }      
822            if (check_default_key ()) {
823                char *p = get_gnupg_default_key ();
824                log_box (_("WinPT Error"), MB_ERR,
825                         _("Default key (from the GPG config file) could not be found or is unuseable.\n"
826                           "The default key will be resetted and can be set later in the Key Manager again.\n\n"
827                           "%s: secret key not found."), p? p : "?");
828                set_gnupg_default_key (NULL);
829                free_if_alloc (p);
830            }
831            if (count_insecure_elgkeys ())
832                DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_ELGWARN, glob_hwnd,
833                                elgamal_warn_dlg_proc, 0);
834        }
835    
836        if (start_manager)
837            PostMessage (hwnd, WM_COMMAND, start_manager, 0);
838    
839        accel_tab = LoadAccelerators (glob_hinst, (LPCTSTR)IDR_WINPT_ACCELERATOR);
840        keyring_check_last_access (); /* init */
841        while (GetMessage (&msg, hwnd, 0, 0)) {
842            if (!TranslateAccelerator (msg.hwnd, accel_tab, &msg)) {
843                TranslateMessage (&msg);
844                DispatchMessage (&msg);
845            }
846        }
847            
848        return 0;
849    }

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