/[winpt]/trunk/Src/wptSymEnc.cpp
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revision 24 by twoaday, Sat Oct 8 10:43:08 2005 UTC revision 328 by twoaday, Fri Sep 25 16:07:38 2009 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) 2002-2006 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   * 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  #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>
21  #include <windows.h>  
22    #include "wptGPG.h"
23  #include "wptGPG.h"  #include "wptCommonCtl.h"
24  #include "wptCommonCtl.h"  #include "wptContext.h"
25  #include "wptContext.h"  #include "wptDlgs.h"
26  #include "wptDlgs.h"  #include "wptNLS.h"
27  #include "wptNLS.h"  #include "wptUTF8.h"
28  #include "wptUTF8.h"  #include "wptTypes.h"
29  #include "wptTypes.h"  #include "wptErrors.h"
30  #include "wptErrors.h"  
31    
32    /* Simple passphrase callback. The hook pointer is the passphrase itself.
33  /* Simple passphrase callback. The hook pointer is the passphrase itself.     Return value: 0 on success. */
34     Return value: 0 on success. */  gpgme_error_t
35  gpgme_error_t  sym_passphrase_cb (void *hook, const char *hint, const char *pass_inf,
36  sym_passphrase_cb (void *hook, const char *hint, const char *pass_inf,                     int prev_was_bad, int fd)
37                     int prev_was_bad, int fd)  {
38  {      const char *pass = (const char*)hook;
39      const char *pass = (const char*)hook;      HANDLE hd = (HANDLE)fd;
40      HANDLE hd = (HANDLE)fd;      DWORD n;
41      DWORD n;  
42        if (!pass)
43      if (!pass)          return gpg_error (GPG_ERR_INV_ARG);
44          return gpg_error (GPG_ERR_INV_ARG);  
45        if (!WriteFile (hd, pass, strlen (pass), &n, NULL))
46      if (!WriteFile (hd, pass, strlen (pass), &n, NULL))          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
47          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);      if (!WriteFile (hd, "\n", 1, &n, NULL))
48      if (!WriteFile (hd, "\n", 1, &n, NULL))          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);
49          log_debug ("sym_passphrase_cb: WriteFile() failed ec=%d\n", w32_errno);      
50            return 0;
51      return 0;  }
52  }  
53    
54    /* Perform symmetric encryption on the current clipboard data.
55  /* Perform symmetric encryption on the current clipboard data.     Return 0 for success. */
56     Return 0 for success. */  gpgme_error_t
57  int  gpg_clip_sym_encrypt (void)
58  gpg_encrypt_symmetric (void)  {
59  {      gpgme_ctx_t ctx;
60      gpgme_ctx_t ctx;      gpgme_data_t plain=NULL;
61      gpgme_data_t plain=NULL;      gpgme_data_t ciph=NULL;
62      gpgme_data_t ciph=NULL;      gpgme_error_t rc;
63      gpgme_error_t rc;      char *pass = NULL;
64      char *pass = NULL;      int cancel = 0;
65      int cancel = 0;      
66            pass = request_passphrase2 (_("Symmetric Encryption"),
67      pass = request_passphrase2 (_("Symmetric Encryption"), 0, &cancel);                                  PASSDLG_NOTEMPTY, &cancel);
68      if (cancel)      if (cancel)
69          return 0;          return 0;
70      rc = gpgme_new (&ctx);      rc = gpgme_new (&ctx);
71      if (rc)      if (rc)
72          goto leave;          goto leave;
73      rc = gpg_data_new_from_clipboard (&plain, 0);      rc = gpg_data_utf8_new_from_clipboard (&plain, 0, NULL);
74      if (rc)      if (rc)
75          goto leave;          goto leave;
76      rc = gpgme_data_new (&ciph);      rc = gpgme_data_new (&ciph);
77      gpgme_set_armor (ctx, 1);      if (rc)
78            goto leave;
79      gpgme_set_passphrase_cb (ctx, sym_passphrase_cb, pass);      gpgme_set_armor (ctx, 1);
80        gpgme_set_textmode (ctx, 1);
81      rc = gpgme_op_encrypt (ctx, NULL, (gpgme_encrypt_flags_t)0, plain, ciph);      
82      if (rc)      gpgme_set_passphrase_cb (ctx, sym_passphrase_cb, pass);
83          msg_box (NULL, gpgme_strerror (rc), _("Symmetric Encryption"), MB_ERR);  
84      else {      rc = gpgme_op_encrypt (ctx, NULL, (gpgme_encrypt_flags_t)0, plain, ciph);
85          show_msg (GetDesktopWindow (), 1500, _("GnuPG Status: Finished"));      if (rc)
86          gpg_data_release_and_set_clipboard (ciph, 1);          msg_box (NULL, gpgme_strerror (rc), _("Symmetric Encryption"), MB_ERR);
87          ciph = NULL;      else {
88      }          show_msg (GetDesktopWindow (), 1500, _("GnuPG Status: Finished"));
89            gpg_data_release_to_clipboard (ciph, 1);
90  leave:          ciph = NULL;
91      if (plain)      }
92          gpgme_data_release (plain);  
93      if (ciph)  leave:
94          gpgme_data_release (ciph);      if (plain)
95      gpgme_release (ctx);          gpgme_data_release (plain);
96      sfree_if_alloc (pass);      if (ciph)
97      return rc? WPTERR_GENERAL : 0;          gpgme_data_release (ciph);
98  }      gpgme_release (ctx);
99        sfree_if_alloc (pass);
100        return rc;
101    }
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