/[winpt]/trunk/Src/wptPassphraseCB.cpp
ViewVC logotype

Diff of /trunk/Src/wptPassphraseCB.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 26 by twoaday, Mon Oct 17 08:49:30 2005 UTC revision 48 by werner, Mon Oct 31 21:14:11 2005 UTC
# Line 1  Line 1 
1  /* wptPassphraseCB.cpp - GPGME Passphrase Callback  /* wptPassphraseCB.cpp - GPGME Passphrase Callback
2   *      Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz   *      Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz
3   *      Copyright (C) 2005 g10 Code GmbH   *      Copyright (C) 2005 g10 Code GmbH
4   *   *
5   * This file is part of WinPT.   * This file is part of WinPT.
6   *   *
7   * WinPT is free software; you can redistribute it and/or   * WinPT is free software; you can redistribute it and/or
8   * modify it under the terms of the GNU General Public License   * modify it under the terms of the GNU General Public License
9   * as published by the Free Software Foundation; either version 2   * as published by the Free Software Foundation; either version 2
10   * of the License, or (at your option) any later version.   * of the License, or (at your option) any later version.
11   *     *  
12   * WinPT is distributed in the hope that it will be useful,   * WinPT is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * General Public License for more details.   * General Public License for more details.
16   *   *
17   * You should have received a copy of the GNU General Public License   * You should have received a copy of the GNU General Public License
18   * along with WinPT; if not, write to the Free Software Foundation,   * along with WinPT; if not, write to the Free Software Foundation,
19   * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA   * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20   */   */
21    
22  #include <windows.h>  #ifdef HAVE_CONFIG_H
23  #include <ctype.h>  #include <config.h>
24    #endif
25  #include "../resource.h"  
26  #include "wptNLS.h"  #include <windows.h>
27  #include "wptW32API.h"  #include <ctype.h>
28  #include "wptVersion.h"  
29  #include "wptGPG.h"  #include "resource.h"
30  #include "wptCommonCtl.h"  #include "wptNLS.h"
31  #include "wptContext.h"  #include "wptW32API.h"
32  #include "wptDlgs.h"  #include "wptVersion.h"
33  #include "wptUTF8.h"  #include "wptGPG.h"
34  #include "wptErrors.h"  #include "wptCommonCtl.h"
35  #include "wptTypes.h"  #include "wptContext.h"
36  #include "wptKeyList.h"  #include "wptDlgs.h"
37  #include "wptAgent.h"  #include "wptUTF8.h"
38  #include "wptRegistry.h"  #include "wptErrors.h"
39    #include "wptTypes.h"
40  const char* get_symkey_algo (int algo);  #include "wptKeylist.h"
41    #include "wptAgent.h"
42  #define item_ctrl_id( cmd ) \  #include "wptRegistry.h"
43      ((cmd) == GPG_CMD_DECRYPT? IDC_DECRYPT_PWD : IDC_DECRYPT_SIGN_PWD)  
44    
45  #define item_ctrl_id2(cmd) \  
46      ((cmd) == GPG_CMD_DECRYPT? IDC_DECRYPT_HIDE : IDC_DECRYPT_SIGN_HIDE)  const char* get_symkey_algo (int algo);
47    
48    #define item_ctrl_id( cmd ) \
49  /* Overwrite passphrase and free memory. */      ((cmd) == GPG_CMD_DECRYPT? IDC_DECRYPT_PWD : IDC_DECRYPT_SIGN_PWD)
50  static void  
51  burn_passphrase (char **pwd)  #define item_ctrl_id2(cmd) \
52  {      ((cmd) == GPG_CMD_DECRYPT? IDC_DECRYPT_HIDE : IDC_DECRYPT_SIGN_HIDE)
53      char *pass = *pwd;    
54      memset (pass, 0, strlen (pass));  
55      delete []pass;  /* Overwrite passphrase and free memory. */
56      *pwd = NULL;  static void
57  }  burn_passphrase (char **pwd)
58    {
59        char *pass = *pwd;
60  /* Dialog procedure for the passphrase callback. */      wipememory (pass, strlen (pass));
61  static BOOL CALLBACK      delete []pass;
62  passphrase_callback_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)      *pwd = NULL;
63  {      }
64      static passphrase_cb_s * c;  
65      gpgme_decrypt_result_t res;  
66      gpgme_sign_result_t res_sig;  /* Dialog procedure for the passphrase callback. */
67      gpgme_key_t key;  static BOOL CALLBACK
68      void *ctx = NULL, *item;  passphrase_callback_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
69      const char *id;  {    
70      char *info;      static passphrase_cb_s * c;
71      int n;      gpgme_decrypt_result_t res;
72        gpgme_sign_result_t res_sig;
73      switch (msg) {      gpgme_key_t key;
74      case WM_INITDIALOG:      gpgme_recipient_t recip, r;
75          c = (passphrase_cb_s *)lparam;      void *ctx = NULL, *item;
76          if (!c)      const char *id;
77              BUG (0);      char *info;
78          SetWindowText (dlg, c->title);      int n;
79          if (c->gpg_cmd == GPG_CMD_DECRYPT) {  
80              SetDlgItemText( dlg, IDC_DECRYPT_LISTINF,      switch (msg) {
81                  _("Encrypted with the following public key(s)") );      case WM_INITDIALOG:
82              CheckDlgButton( dlg, IDC_DECRYPT_HIDE, BST_CHECKED );          c = (passphrase_cb_s *)lparam;
83          }          if (!c)
84          else if (c->gpg_cmd == GPG_CMD_SIGN)              BUG (0);
85              CheckDlgButton (dlg, IDC_DECRYPT_SIGN_HIDE, BST_CHECKED);          SetWindowText (dlg, c->title);
86          res = gpgme_op_decrypt_result (c->gpg);          if (c->gpg_cmd == GPG_CMD_DECRYPT) {
87          if (res != NULL && c->gpg_cmd == GPG_CMD_DECRYPT) {              SetDlgItemText (dlg, IDC_DECRYPT_LISTINF,
88              gpgme_recipient_t r;                              _("Encrypted with the following public key(s)"));
89                CheckDlgButton (dlg, IDC_DECRYPT_HIDE, BST_CHECKED);
90              /* XXX: not all ENCRYPT_TO entries are listed here. */          }
91              for (r = res->recipients; r; r = r->next) {          else if (c->gpg_cmd == GPG_CMD_SIGN)
92                  get_pubkey (r->keyid, &key);              CheckDlgButton (dlg, IDC_DECRYPT_SIGN_HIDE, BST_CHECKED);
93                  if (key) {          if (c->recipients)
94                      char *uid;              recip = c->recipients; /* recipients were already extracted. */
95                      id = key->uids->name;          else {
96                      if (!id)              /* XXX: not all ENCRYPT_TO entries are listed here. */
97                          id = _("Invalid User ID");              res = gpgme_op_decrypt_result (c->gpg);
98                      uid = utf8_to_wincp (id, strlen (id));              if (res && res->recipients)
99                      info = new char [32+strlen (uid)+1 + 4 + strlen (r->keyid)+1                  recip = res->recipients;
100                                       + strlen (key->uids->email)+1];          }
101                      if (!info)          if (recip != NULL && c->gpg_cmd == GPG_CMD_DECRYPT) {
102                          BUG (NULL);              for (r = res->recipients; r; r = r->next) {
103                      sprintf (info, "%s <%s> (%s, 0x%s)", uid, key->uids->email,                  get_pubkey (r->keyid, &key);
104                               get_key_pubalgo (r->pubkey_algo), r->keyid+8);                  if (key) {
105                      free (uid);                      char *uid;
106                                            id = key->uids->name;
107                  }                      if (!id)
108                  else {                          id = _("Invalid User ID");
109                      info = new char [32 + strlen (r->keyid)+1 + 4];                      uid = utf8_to_wincp (id, strlen (id));
110                      if (!info)                      info = new char [32+strlen (uid)+1 + 4 + strlen (r->keyid)+1
111                          BUG (NULL);                                       + strlen (key->uids->email)+1];
112                      sprintf (info, _("Unknown key ID (%s, 0x%s)"),                      if (!info)
113                               get_key_pubalgo (r->pubkey_algo), r->keyid+8);                          BUG (NULL);
114                  }                      sprintf (info, "%s <%s> (%s, 0x%s)", uid, key->uids->email,
115                  listbox_add_string (GetDlgItem (dlg, IDC_DECRYPT_LIST), info);                               get_key_pubalgo (r->pubkey_algo), r->keyid+8);
116                  free_if_alloc (info);                      free (uid);
117              }                      
118          }                  }
119          else if (c->gpg_cmd == GPG_CMD_DECRYPT)                  else {
120              EnableWindow (GetDlgItem (dlg, IDC_DECRYPT_LIST), FALSE);                      info = new char [32 + strlen (r->keyid)+1 + 4];
121          SetDlgItemText (dlg, c->gpg_cmd == GPG_CMD_DECRYPT?                      if (!info)
122                          IDC_DECRYPT_PWDINFO : IDC_DECRYPT_SIGN_PWDINFO,                          BUG (NULL);
123                          c->bad_pwd? _("Bad passphrase; Enter passphrase again") :                      sprintf (info, _("Unknown key ID (%s, 0x%s)"),
124                          _("Please enter your passphrase"));                               get_key_pubalgo (r->pubkey_algo), r->keyid+8);
125          if (c->gpg_cmd == GPG_CMD_DECRYPT) {                  }
126              SetFocus (GetDlgItem (dlg, IDC_DECRYPT_PWD));                  listbox_add_string (GetDlgItem (dlg, IDC_DECRYPT_LIST), info);
127              if (res && !res->recipients) {                  free_if_alloc (info);
128                  const char *s = _("Symmetric encryption.\n"              }
129                                    "%s encrypted data.");          }
130                  const char *alg = get_symkey_algo (c->sym.sym_algo);          else if (c->gpg_cmd == GPG_CMD_DECRYPT)
131                  info = new char[strlen (s) + strlen (alg) + 2];              EnableWindow (GetDlgItem (dlg, IDC_DECRYPT_LIST), FALSE);
132                  if (!info)          SetDlgItemText (dlg, c->gpg_cmd == GPG_CMD_DECRYPT?
133                      BUG (NULL);                          IDC_DECRYPT_PWDINFO : IDC_DECRYPT_SIGN_PWDINFO,
134                  sprintf (info, s, alg);                          c->bad_pwd? _("Bad passphrase; Enter passphrase again") :
135                  SetDlgItemText (dlg, IDC_DECRYPT_MSG, info);                          _("Please enter your passphrase"));
136                  free_if_alloc (info);          if (c->gpg_cmd == GPG_CMD_DECRYPT) {
137              }              SetFocus (GetDlgItem (dlg, IDC_DECRYPT_PWD));
138              else              if (res && !res->recipients) {
139                  SetDlgItemText (dlg, IDC_DECRYPT_MSG, c->info);                  const char *s = _("Symmetric encryption.\n"
140          }                                    "%s encrypted data.");
141          else {                  const char *alg = get_symkey_algo (c->sym.sym_algo);
142              SetFocus( GetDlgItem (dlg, IDC_DECRYPT_SIGN_PWD));                  info = new char[strlen (s) + strlen (alg) + 2];
143              SetDlgItemText (dlg, IDC_DECRYPT_SIGN_MSG, c->info);                  if (!info)
144          }                      BUG (NULL);
145          center_window (dlg, NULL);                  sprintf (info, s, alg);
146          SetForegroundWindow (dlg);                  SetDlgItemText (dlg, IDC_DECRYPT_MSG, info);
147          set_active_window (dlg);                  free_if_alloc (info);
148          return FALSE;              }
149                else
150          case WM_SYSCOMMAND:                  SetDlgItemText (dlg, IDC_DECRYPT_MSG, c->info);
151              if (LOWORD (wparam) == SC_CLOSE) {          }
152                  SetDlgItemText (dlg, item_ctrl_id( c->gpg_cmd ), "");          else {
153                  c->cancel = 1;              SetFocus( GetDlgItem (dlg, IDC_DECRYPT_SIGN_PWD));
154                  EndDialog (dlg, TRUE);              SetDlgItemText (dlg, IDC_DECRYPT_SIGN_MSG, c->info);
155              }          }
156              break;          center_window (dlg, NULL);
157            SetForegroundWindow (dlg);
158          case WM_COMMAND:          set_active_window (dlg);
159              switch( HIWORD( wparam ) ) {          return FALSE;
160              case BN_CLICKED:  
161                  if ( LOWORD( wparam ) == IDC_DECRYPT_HIDE          case WM_SYSCOMMAND:
162                      || LOWORD( wparam ) == IDC_DECRYPT_SIGN_HIDE ) {              if (LOWORD (wparam) == SC_CLOSE) {
163                      HWND hwnd;                  SetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), "");
164                      int hide = IsDlgButtonChecked (dlg, item_ctrl_id2 (c->gpg_cmd));                  c->cancel = 1;
165                      hwnd = GetDlgItem (dlg, item_ctrl_id (c->gpg_cmd));                  EndDialog (dlg, TRUE);
166                      SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0);              }
167                      SetFocus (hwnd);              break;
168                  }  
169              }          case WM_COMMAND:
170                switch (HIWORD (wparam)) {
171              switch (LOWORD (wparam)) {              case BN_CLICKED:
172              case IDOK:                    if  (LOWORD (wparam) == IDC_DECRYPT_HIDE
173                  /* fixme: the item is even cached when the passphrase is not                      || LOWORD (wparam) == IDC_DECRYPT_SIGN_HIDE) {
174                            correct, which means that the user needs to delete all                      HWND hwnd;
175                            cached entries to continue. */                      int hide = IsDlgButtonChecked (dlg, item_ctrl_id2 (c->gpg_cmd));
176                  if (c->pwd)                      hwnd = GetDlgItem (dlg, item_ctrl_id (c->gpg_cmd));
177                      burn_passphrase (&c->pwd);                      SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0);
178                  n = item_get_text_length (dlg, item_ctrl_id (c->gpg_cmd));                      SetFocus (hwnd);
179                  if (!n) {                  }
180                      c->pwd = new char[2];              }
181                      if (!c->pwd)  
182                          BUG (NULL);              switch (LOWORD (wparam)) {
183                      strcpy (c->pwd, "");              case IDOK:  
184                  }                  /* XXX: the item is even cached when the passphrase is not
185                  else {                          correct, which means that the user needs to delete all
186                      c->pwd = new char[n+2];                          cached entries to continue. */
187                      if (!c->pwd)                  if (c->pwd)
188                          BUG (NULL);                      burn_passphrase (&c->pwd);
189                      GetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), c->pwd, n+1);                  n = item_get_text_length (dlg, item_ctrl_id (c->gpg_cmd));
190                  }                  if (!n) {
191                  res = gpgme_op_decrypt_result (c->gpg);                      c->pwd = new char[2];
192                  if (!res)                      if (!c->pwd)
193                      res_sig = gpgme_op_sign_result (c->gpg);                          BUG (NULL);
194                  if (reg_prefs.cache_time > 0 && !c->is_card &&                      strcpy (c->pwd, "");
195                      ((res && res->recipients) || (res_sig && res_sig->signatures))) {                  }
196                      if (agent_get_cache (c->keyid, &item))                  else {
197                          agent_unlock_cache_entry (&item);                      c->pwd = new char[n+2];
198                      else                      if (!c->pwd)
199                          agent_put_cache (c->keyid, c->pwd, reg_prefs.cache_time);                          BUG (NULL);
200                  }                      GetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), c->pwd, n+1);
201                  EndDialog (dlg, TRUE);                  }
202                  return TRUE;                  res = gpgme_op_decrypt_result (c->gpg);
203                                    if (!res)
204              case IDCANCEL:                      res_sig = gpgme_op_sign_result (c->gpg);
205                  SetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), "" );                  if (reg_prefs.cache_time > 0 && !c->is_card &&
206                  c->cancel = 1;                      ((res && res->recipients) || (res_sig && res_sig->signatures))) {
207                  EndDialog (dlg, FALSE);                      if (agent_get_cache (c->keyid, &item))
208                  return FALSE;                          agent_unlock_cache_entry (&item);
209              }                      else
210              break;                          agent_put_cache (c->keyid, c->pwd, reg_prefs.cache_time);
211      }                  }
212                        c->cancel = 0;
213      return FALSE;                  EndDialog (dlg, TRUE);
214  }                  return TRUE;
215                    
216                case IDCANCEL:
217  /* Extract the main keyid from @pass_info.                  SetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), "");
218     Return value: long main keyid or NULL for an error. */                  c->cancel = 1;
219  static const char*                  EndDialog (dlg, FALSE);
220  parse_gpg_keyid (const char *pass_info)                  return FALSE;
221  {              }
222      static char keyid[16+1];              break;
223            }
224      /* XXX: check for leading alpha-chars? */      
225      if (strlen (pass_info) < 16)      return FALSE;
226          return NULL;  }
227      /* the format of the desc buffer looks like this:  
228         request_keyid[16] main_keyid[16] keytype[1] keylength[4]  
229         we use the main keyid to use only one cache entry. */  /* Extract the main keyid from @pass_info.
230      strncpy (keyid, pass_info+17, 16);     Return value: long main keyid or NULL for an error. */
231      keyid[16] = 0;  static const char*
232      return keyid;  parse_gpg_keyid (const char *pass_info)
233  }  {
234        static char keyid[16+1];
235        
236  /* Parse the information in @uid_hint and @pass_info to generate      /* XXX: check for leading alpha-chars? */
237     a input message for the user in @desc. */      if (strlen (pass_info) < 16)
238  static int          return NULL;
239  parse_gpg_description (const char *uid_hint, const char *pass_info,      /* the format of the desc buffer looks like this:
240                         char *desc, int size)         request_keyid[16] main_keyid[16] keytype[1] keylength[4]
241  {         we use the main keyid to use only one cache entry. */
242      gpgme_pubkey_algo_t algo;      strncpy (keyid, pass_info+17, 16);
243      char usedkey[16+1], mainkey[16+1];      keyid[16] = 0;
244      char *uid, *p;      return keyid;
245      int n=0;  }
246    
247      if (strlen (uid_hint) < 17) {  
248          *desc = 0;  /* Parse the information in @uid_hint and @pass_info to generate
249          return -1;     a input message for the user in @desc. */
250      }  static int
251    parse_gpg_description (const char *uid_hint, const char *pass_info,
252      while (p = strsep ((char**)&pass_info, " ")) {                         char *desc, int size)
253          switch (n++) {  {
254          case 0: strncpy (mainkey, p, 16); mainkey[16] = 0; break;      gpgme_pubkey_algo_t algo;
255          case 1: strncpy (usedkey, p, 16); usedkey[16] = 0; break;      char usedkey[16+1];
256          case 2: algo = (gpgme_pubkey_algo_t)atol (p); break;      char mainkey[16+1];
257          }      char *uid, *p;
258      }      int n=0;
259      uid_hint += 16; /* skip keyid */  
260      uid_hint += 1;  /* space */      /* Each uid_hint contains a long key-ID so it is at least 16 bytes. */
261        if (strlen (uid_hint) < 17) {
262      uid = utf8_to_wincp (uid_hint, strlen (uid_hint));          *desc = 0;
263            return -1;
264      if (strcmp (usedkey, mainkey))      }
265          _snprintf (desc, size-1,  
266                     _("You need a passphrase to unlock the secret key for\n"      while (p = strsep ((char**)&pass_info, " ")) {
267                       "user: \"%s\"\n"          switch (n++) {
268                       "%s key, ID %s (main key ID %s)\n"),          case 0: strncpy (mainkey, p, 16); mainkey[16] = 0; break;
269                     uid, get_key_pubalgo (algo), usedkey+8, mainkey+8);          case 1: strncpy (usedkey, p, 16); usedkey[16] = 0; break;
270      else if (!strcmp (usedkey, mainkey))          case 2: algo = (gpgme_pubkey_algo_t)atol (p); break;
271          _snprintf (desc, size-1,          }
272                     _("You need a passphrase to unlock the secret key for\n"      }
273                       "user: \"%s\"\n"      uid_hint += 16; /* skip keyid */
274                       "%s key, ID %s\n"),      uid_hint += 1;  /* space */
275                       uid, get_key_pubalgo (algo), usedkey+8);  
276      free (uid);      uid = utf8_to_wincp (uid_hint, strlen (uid_hint));
277      return 0;  
278  }      if (strcmp (usedkey, mainkey))
279            _snprintf (desc, size-1,
280                       _("You need a passphrase to unlock the secret key for\n"
281  /*                       "user: \"%s\"\n"
282  static int inline                       "%s key, ID %s (main key ID %s)\n"),
283  is_hexstring (const char * p)                     uid, get_key_pubalgo (algo), usedkey+8, mainkey+8);
284  {      else if (!strcmp (usedkey, mainkey))
285      size_t i;          _snprintf (desc, size-1,
286                       _("You need a passphrase to unlock the secret key for\n"
287      for (i=0; i < strlen (p); i++) {                       "user: \"%s\"\n"
288          if (!isxdigit (p[i]))                       "%s key, ID %s\n"),
289              return -1;                       uid, get_key_pubalgo (algo), usedkey+8);
290      }      free (uid);
291      return 0;      return 0;
292  }  }
293  */  
294    
295  /* Passphrase callback with the ability to support caching. */  /* Extract the serial number from the card ID @id and return it. */
296  gpgme_error_t  const char*
297  passphrase_cb (void *hook, const char *uid_hint,  extract_serial_no (const char *id)
298                 const char *passphrase_info,  {
299                 int prev_was_bad, int fd)      static char buf[8];
300  {      char *p;
301      passphrase_cb_s *c = (passphrase_cb_s*)hook;  
302      HANDLE hd = (HANDLE)fd;      p = strchr (id, '/');
303      void *item;      if (!p)
304      const char *keyid, *pass;          return NULL;
305      DWORD n;      strncpy (buf, id+(p-id)-6, 6);
306      int rc;      return buf;
307    }
308      if (!c)  
309          return gpg_error (GPG_ERR_INV_ARG);  
310      c->bad_pwd = prev_was_bad? 1 : 0;  /* Passphrase callback with the ability to support caching. */
311      if (prev_was_bad && !c->cancel) {  gpgme_error_t
312          if (c->pwd)  passphrase_cb (void *hook, const char *uid_hint,
313              burn_passphrase (&c->pwd);                 const char *passphrase_info,
314          agent_del_cache (c->keyid);                 int prev_was_bad, int fd)
315          c->pwd_init = 1;  {
316      }      passphrase_cb_s *c = (passphrase_cb_s*)hook;
317        HANDLE hd = (HANDLE)fd;
318      if (passphrase_info) {      void *item;
319          if (strlen (passphrase_info) < 16 &&      const char *keyid, *pass;
320              !strstr (passphrase_info, "OPENPGP")) {/* assume symetric encryption. */      DWORD n;
321              int n=2;      int rc;
322              c->sym.sym_algo = atoi (passphrase_info);  
323              if (c->sym.sym_algo > 9)      if (!c)
324                  n++;          return gpg_error (GPG_ERR_INV_ARG);
325              /* XXX: be more strict. */      c->bad_pwd = prev_was_bad? 1 : 0;
326              c->sym.s2k_mode = atoi (passphrase_info+n);      if (prev_was_bad && !c->cancel) {
327              c->sym.s2k_hash = atoi (passphrase_info+n+2);          if (c->pwd)
328          }              burn_passphrase (&c->pwd);
329            agent_del_cache (c->keyid);
330          keyid = parse_gpg_keyid (passphrase_info);          c->pwd_init = 1;
331          pass = agent_get_cache (keyid+8, &item);      }
332          if (pass) {  
333              agent_unlock_cache_entry (&item);      if (passphrase_info) {
334              c->pwd_init = 0;          if (strlen (passphrase_info) < 16 &&
335              if (!WriteFile (hd, pass, strlen (pass), &n, NULL))              !strstr (passphrase_info, "OPENPGP")) {
336                  log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);              /* assume symetric encryption. */
337              if (!WriteFile (hd, "\n", 1, &n, NULL))              int n=2;
338                  log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);              c->sym.sym_algo = atoi (passphrase_info);
339              return 0;              if (c->sym.sym_algo > 9)
340          }                  n++;
341      }              /* XXX: be more strict. */
342                c->sym.s2k_mode = atoi (passphrase_info+n);
343      if (c->pwd_init) {              c->sym.s2k_hash = atoi (passphrase_info+n+2);
344          if (keyid && strlen (keyid) == 16)          }
345              strcpy (c->keyid, keyid+8);  
346            keyid = parse_gpg_keyid (passphrase_info);
347          /* if @passphrase_info contains 'OPENPGP' we assume a smart card          pass = agent_get_cache (keyid+8, &item);
348              has been used. */          if (pass) {
349          if (strstr (passphrase_info, "OPENPGP")) {              agent_unlock_cache_entry (&item);
350              char buf[16];              c->pwd_init = 0;
351              memset (buf, 0, sizeof buf);              if (!WriteFile (hd, pass, strlen (pass), &n, NULL))
352              strncpy (buf, "??", 2); /* XXX: fixme we need the serial no. */                  log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
353              _snprintf (c->info, sizeof c->info-1,              if (!WriteFile (hd, "\n", 1, &n, NULL))
354                         _("Please enter the PIN to unlock your secret card key\n"                  log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
355                           "Card: %s"), buf);              return 0;
356              c->is_card = 1;          }
357          }      }
358          else if (uid_hint)  
359              parse_gpg_description (uid_hint, passphrase_info,      if (c->pwd_init) {
360                                     c->info, sizeof c->info - 1);          if (keyid && strlen (keyid) == 16)
361          if (c->gpg_cmd == GPG_CMD_DECRYPT) {              strcpy (c->keyid, keyid+8);
362              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_DECRYPT,  
363                                   (HWND)c->hwnd, passphrase_callback_proc,          /* if @passphrase_info contains 'OPENPGP' we assume a smart card
364                                   (LPARAM)c);              has been used. */
365          }          if (strstr (passphrase_info, "OPENPGP")) {
366          else if (c->gpg_cmd == GPG_CMD_SIGN) {              const char *s=passphrase_info;
367              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_DECRYPT_SIGN,              while (s && *s && *s != 'D')
368                                   (HWND)c->hwnd, passphrase_callback_proc,                  s++;
369                                   (LPARAM)c);              _snprintf (c->info, sizeof c->info-1,
370          }                         _("Please enter the PIN to unlock your secret card key\n"
371          if (rc == -1) {                           "Card: %s"), extract_serial_no (s));
372              WriteFile (hd, "\n", 1, &n, NULL);              c->is_card = 1;
373              return 0;          }
374          }          else if (uid_hint)
375          c->pwd_init = 0;              parse_gpg_description (uid_hint, passphrase_info,
376      }                                     c->info, sizeof c->info - 1);
377      if (c->cancel) {          if (c->gpg_cmd == GPG_CMD_DECRYPT) {
378          WriteFile (hd, "\n", 1, &n, NULL);              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_DECRYPT,
379          return 0;                                   (HWND)c->hwnd, passphrase_callback_proc,
380      }                                   (LPARAM)c);
381            }
382      WriteFile (hd, c->pwd, strlen (c->pwd), &n, NULL);          else if (c->gpg_cmd == GPG_CMD_SIGN) {
383      WriteFile (hd, "\n", 1, &n, NULL);              rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_DECRYPT_SIGN,
384      return 0;                                   (HWND)c->hwnd, passphrase_callback_proc,
385  }                                   (LPARAM)c);
386            }
387            if (rc == -1) {
388  /* Initialize the given passphrase callback @cb with the              if (!WriteFile (hd, "\n", 1, &n, NULL))
389     used gpgme context @ctx, the command @cmd and a title                  log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
390     @title for the dialog. */              return 0;
391  void          }
392  set_gpg_passphrase_cb (passphrase_cb_s *cb, gpgme_ctx_t ctx,          c->pwd_init = 0;
393                         int cmd, HWND hwnd, const char *title)      }
394  {      if (c->cancel) {
395      memset (cb, 0, sizeof *cb);          if (!WriteFile (hd, "\n", 1, &n, NULL))
396      cb->gpg_cmd = cmd;              log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
397      cb->bad_pwd = 0;          return 0;
398      cb->is_card = 0;      }
399      cb->cancel = 0;  
400      cb->hwnd = hwnd;      WriteFile (hd, c->pwd, strlen (c->pwd), &n, NULL);
401      cb->pwd_init = 1;      WriteFile (hd, "\n", 1, &n, NULL);
402      free_if_alloc (cb->title);      return 0;
403      cb->title = m_strdup (title);  }
404      if (!cb->title)  
405          BUG (NULL);  
406      gpgme_set_passphrase_cb (ctx, passphrase_cb, cb);  /* Initialize the given passphrase callback @cb with the
407      cb->gpg = ctx;     used gpgme context @ctx, the command @cmd and a title
408  }     @title for the dialog. */
409    void
410    set_gpg_passphrase_cb (passphrase_cb_s *cb, gpgme_ctx_t ctx,
411  /* Release a passphrase callback @ctx. */                         int cmd, HWND hwnd, const char *title)
412  void  {
413  release_gpg_passphrase_cb (passphrase_cb_s *ctx)      memset (cb, 0, sizeof *cb);
414  {      cb->gpg_cmd = cmd;
415      if (!ctx)      cb->bad_pwd = 0;
416          return;      cb->is_card = 0;
417      sfree_if_alloc (ctx->pwd);      cb->cancel = 0;
418      free_if_alloc (ctx->title);      cb->hwnd = hwnd;
419  }      cb->pwd_init = 1;
420        free_if_alloc (cb->title);
421        cb->title = m_strdup (title);
422  /* Simple check to measure passphrase (@pass) quality.      if (!cb->title)
423     Return value: 0 on success. */          BUG (NULL);
424  int      gpgme_set_passphrase_cb (ctx, passphrase_cb, cb);
425  check_passwd_quality (const char *pass, int strict)      cb->gpg = ctx;
426  {  }
427      int i, nd=0, nc=0, n;  
428    
429      n = strlen (pass);  /* Release a passphrase callback @ctx. */
430      if (n < 8)  void
431          return -1;  release_gpg_passphrase_cb (passphrase_cb_s *ctx)
432    {
433      for (i=0; i < n; i++) {      gpgme_recipient_t r, n;
434          if (isdigit (pass[i])) nd++;  
435          if (isalpha (pass[i])) nc++;      if (!ctx)
436      }          return;
437        sfree_if_alloc (ctx->pwd);
438      if (nd == n || nc == n)      free_if_alloc (ctx->title);
439          return -1;      r = ctx->recipients;
440        while (r) {
441      return 0;          n = r->next;
442  }          safe_free (r->keyid);
443            safe_free (r);
444            r = n;
445        }
446    }
447    
448    
449    /* Simple check to measure passphrase (@pass) quality.
450       Return value: 0 on success. */
451    int
452    check_passwd_quality (const char *pass, int strict)
453    {
454        int i, nd=0, nc=0, n;
455    
456        n = strlen (pass);
457        if (n < 8)
458            return -1;
459    
460        for (i=0; i < n; i++) {
461            if (isdigit (pass[i]))
462                nd++;
463            if (isalpha (pass[i]))
464                nc++;
465        }
466    
467        /* check that the passphrase contains letters and numbers. */
468        if (nd == n || nc == n)
469            return -1;
470    
471        return 0;
472    }

Legend:
Removed from v.26  
changed lines
  Added in v.48

[email protected]
ViewVC Help
Powered by ViewVC 1.1.26