/[winpt]/trunk/Src/wptSymEnc.cpp
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revision 24 by twoaday, Sat Oct 8 10:43:08 2005 UTC revision 48 by werner, Mon Oct 31 21:14:11 2005 UTC
# Line 1  Line 1 
1  /* wptSymEnc.cpp - Symmetric encryption support  /* wptSymEnc.cpp - Symmetric encryption support
2   *      Copyright (C) 2002, 2003, 2004, 2005 Timo Schulz   *      Copyright (C) 2002, 2003, 2004, 2005 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   * WinPT is free software; you can redistribute it and/or
7   * modify it under the terms of the GNU General Public License   * modify it under the terms of the GNU General Public License
8   * as published by the Free Software Foundation; either version 2   * as published by the Free Software Foundation; either version 2
9   * of the License, or (at your option) any later version.   * of the License, or (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 GNU   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14   * General Public License for more details.   * General Public License for more details.
15   *   *
16   * You should have received a copy of the GNU General Public License   * You should have received a copy of the GNU General Public License
17   * along with WinPT; if not, write to the Free Software Foundation,   * along with WinPT; if not, write to the Free Software Foundation,
18   * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA   * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19   */   */
20    
21  #include <windows.h>  #ifdef HAVE_CONFIG_H
22    #include <config.h>
23  #include "wptGPG.h"  #endif
24  #include "wptCommonCtl.h"  
25  #include "wptContext.h"  #include <windows.h>
26  #include "wptDlgs.h"  
27  #include "wptNLS.h"  #include "wptGPG.h"
28  #include "wptUTF8.h"  #include "wptCommonCtl.h"
29  #include "wptTypes.h"  #include "wptContext.h"
30  #include "wptErrors.h"  #include "wptDlgs.h"
31    #include "wptNLS.h"
32    #include "wptUTF8.h"
33  /* Simple passphrase callback. The hook pointer is the passphrase itself.  #include "wptTypes.h"
34     Return value: 0 on success. */  #include "wptErrors.h"
35  gpgme_error_t  
36  sym_passphrase_cb (void *hook, const char *hint, const char *pass_inf,  
37                     int prev_was_bad, int fd)  /* Simple passphrase callback. The hook pointer is the passphrase itself.
38  {     Return value: 0 on success. */
39      const char *pass = (const char*)hook;  gpgme_error_t
40      HANDLE hd = (HANDLE)fd;  sym_passphrase_cb (void *hook, const char *hint, const char *pass_inf,
41      DWORD n;                     int prev_was_bad, int fd)
42    {
43      if (!pass)      const char *pass = (const char*)hook;
44          return gpg_error (GPG_ERR_INV_ARG);      HANDLE hd = (HANDLE)fd;
45        DWORD n;
46      if (!WriteFile (hd, pass, strlen (pass), &n, NULL))  
47          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);      if (!pass)
48      if (!WriteFile (hd, "\n", 1, &n, NULL))          return gpg_error (GPG_ERR_INV_ARG);
49          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);  
50            /* XXX: check for passphrase.enter. */
51      return 0;      if (!WriteFile (hd, pass, strlen (pass), &n, NULL))
52  }          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
53        if (!WriteFile (hd, "\n", 1, &n, NULL))
54            log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
55  /* Perform symmetric encryption on the current clipboard data.      
56     Return 0 for success. */      return 0;
57  int  }
58  gpg_encrypt_symmetric (void)  
59  {  
60      gpgme_ctx_t ctx;  /* Perform symmetric encryption on the current clipboard data.
61      gpgme_data_t plain=NULL;     Return 0 for success. */
62      gpgme_data_t ciph=NULL;  int
63      gpgme_error_t rc;  gpg_encrypt_symmetric (void)
64      char *pass = NULL;  {
65      int cancel = 0;      gpgme_ctx_t ctx;
66            gpgme_data_t plain=NULL;
67      pass = request_passphrase2 (_("Symmetric Encryption"), 0, &cancel);      gpgme_data_t ciph=NULL;
68      if (cancel)      gpgme_error_t rc;
69          return 0;      char *pass = NULL;
70      rc = gpgme_new (&ctx);      int cancel = 0;
71      if (rc)      
72          goto leave;      pass = request_passphrase2 (_("Symmetric Encryption"), 0, &cancel);
73      rc = gpg_data_new_from_clipboard (&plain, 0);      if (cancel)
74      if (rc)          return 0;
75          goto leave;      rc = gpgme_new (&ctx);
76      rc = gpgme_data_new (&ciph);      if (rc)
77      gpgme_set_armor (ctx, 1);          goto leave;
78        rc = gpg_data_new_from_clipboard (&plain, 0);
79      gpgme_set_passphrase_cb (ctx, sym_passphrase_cb, pass);      if (rc)
80            goto leave;
81      rc = gpgme_op_encrypt (ctx, NULL, (gpgme_encrypt_flags_t)0, plain, ciph);          rc = gpgme_data_new (&ciph);
82      if (rc)      gpgme_set_armor (ctx, 1);
83          msg_box (NULL, gpgme_strerror (rc), _("Symmetric Encryption"), MB_ERR);  
84      else {      gpgme_set_passphrase_cb (ctx, sym_passphrase_cb, pass);
85          show_msg (GetDesktopWindow (), 1500, _("GnuPG Status: Finished"));  
86          gpg_data_release_and_set_clipboard (ciph, 1);      rc = gpgme_op_encrypt (ctx, NULL, (gpgme_encrypt_flags_t)0, plain, ciph);    
87          ciph = NULL;      if (rc)
88      }          msg_box (NULL, gpgme_strerror (rc), _("Symmetric Encryption"), MB_ERR);
89        else {
90  leave:          show_msg (GetDesktopWindow (), 1500, _("GnuPG Status: Finished"));
91      if (plain)          gpg_data_release_and_set_clipboard (ciph, 1);
92          gpgme_data_release (plain);          ciph = NULL;
93      if (ciph)      }
94          gpgme_data_release (ciph);  
95      gpgme_release (ctx);  leave:
96      sfree_if_alloc (pass);      if (plain)
97      return rc? WPTERR_GENERAL : 0;          gpgme_data_release (plain);
98  }      if (ciph)
99            gpgme_data_release (ciph);
100        gpgme_release (ctx);
101        sfree_if_alloc (pass);
102        return rc? WPTERR_GENERAL : 0;
103    }
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