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/* wptKeyRevokeDlg.cpp - Key revocation dialog |
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* Copyright (C) 2001-2003, 2005-2006, 2009 Timo Schulz |
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* Copyright (C) 2005 g10 Code GmbH |
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* |
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* This file is part of WinPT. |
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* |
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* WinPT is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* WinPT is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
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#include <windows.h> |
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|
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#include "resource.h" |
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#include "gpgme.h" |
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#include "wptErrors.h" |
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#include "wptGPG.h" |
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#include "wptW32API.h" |
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#include "wptTypes.h" |
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#include "wptCommonCtl.h" |
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#include "wptContext.h" /* for passphrase_s */ |
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#include "wptDlgs.h" |
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#include "wptNLS.h" |
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#include "wptUTF8.h" |
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|
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void secure_filename (char *file, size_t len); |
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|
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|
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/* Generate a file template for the cert based on the key |
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with the keyid @keyid. */ |
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static void |
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mk_cert_fname (const char *keyid, char *fname, size_t flen) |
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{ |
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winpt_key_s k; |
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const char *filename = _("Revocation-Certificate"); |
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|
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memset (&k, 0, sizeof (k)); |
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if (winpt_get_pubkey (keyid, &k)) |
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BUG (NULL); |
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_snprintf (fname, flen-1, "%s_%s.asc", k.ext->uids->name, filename); |
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secure_filename (fname, strlen (fname)); |
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} |
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|
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|
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/* Release the cert data and store it in the file @fname. */ |
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static void |
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release_cert_as_file (char *revcert, const char *fname) |
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{ |
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gpgme_error_t err; |
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gpgme_data_t rev; |
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|
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err = gpgme_data_new_from_mem (&rev, revcert, strlen (revcert), 1); |
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if (!err) |
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err = gpg_data_release_and_set_file (rev, fname); |
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if (err) |
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msg_box (NULL, gpgme_strerror (err), _("Key Revocation Cert"), MB_ERR); |
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safe_free (revcert); |
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} |
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|
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|
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static void |
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on_init_dialog (HWND dlg) |
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{ |
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HWND list; |
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|
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SetWindowText (dlg, _("Key Revocation Cert")); |
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SetDlgItemText (dlg, IDCANCEL, _("&Cancel")); |
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SetDlgItemText (dlg, IDC_KEYREVOKE_REASONINF, _("Reason for revocation")); |
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SetDlgItemText (dlg, IDC_KEYREVOKE_OPTINF, _("Optional description text")); |
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SetDlgItemText (dlg, IDC_KEYREVOKE_PWDINF, _("&Passphrase:")); |
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SetDlgItemText (dlg, IDC_KEYREVOKE_OUTINF, _("Output file:")); |
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list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON); |
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listbox_add_string (list, _("0. No reason specified")); |
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listbox_add_string (list, _("1. Key has been compromised")); |
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listbox_add_string (list, _("2. Key is superseded")); |
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listbox_add_string (list, _("3. Key is no longer used")); |
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SendMessage (list, LB_SETCURSEL, (WPARAM)0, 0); |
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SetForegroundWindow (dlg); |
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center_window (dlg, NULL); |
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} |
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|
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/* Generate the data expected by the gpg command handler. */ |
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static char* |
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generate_revoke_input (int code, const char *cmt, const char *pass) |
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{ |
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const char *fmt; |
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char *p; |
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size_t n; |
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|
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fmt = "Y\n" /* gen_revoke.okay */ |
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"%d\n" /* ask_revocation_reason.code */ |
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"%s\n" /* ask_revocation_reason.text */ |
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"%s" /* text != NULL '\n' otherwise '' */ |
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"Y\n" /* ask_revocation_reason.okay */ |
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"%s\n"; /* passphrase.enter. */ |
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n = strlen (fmt) + 32; |
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if (pass) |
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n += strlen (pass) + 1; |
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if (cmt) |
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n += strlen (cmt) + 1; |
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p = new char[n+1]; |
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if (!p) |
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BUG (0); |
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sprintf (p, fmt, code, cmt? cmt : "", cmt? "\n" : "", pass? pass : ""); |
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return p; |
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} |
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|
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|
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/* Dialog box procedure for key revocation. */ |
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BOOL CALLBACK |
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key_revoke_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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static winpt_key_t k; |
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gpgme_error_t err; |
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HWND list; |
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int idx, use_desc; |
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char file[256]; |
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char *pwd=NULL; |
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char *desc=NULL; |
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char *inp_data = NULL, *revcert=NULL; |
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const char *warning = |
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_("Please move this certificate to a medium where it can be " |
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"stored in a safe place (floppy, CDR, etc..).\n" |
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"If an attacker gets access to this certificate he can use it to " |
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"render your key unusable!"); |
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|
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switch( msg ) { |
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case WM_INITDIALOG: |
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if (!lparam) |
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BUG (0); |
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k = (winpt_key_t)lparam; |
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on_init_dialog (dlg); |
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return TRUE; |
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|
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case WM_DESTROY: |
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balloon_msg_disable (); |
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break; |
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|
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case WM_COMMAND: |
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switch (LOWORD (wparam)) { |
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case IDC_KEYREVOKE_CHOOSE: |
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balloon_msg_disable (); |
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const char *s; |
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mk_cert_fname (k->keyid, file, sizeof (file)-1); |
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s = get_filesave_dlg (dlg, _("Choose file to save the certificate"), NULL, file); |
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if (s && *s) |
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SetDlgItemText (dlg, IDC_KEYREVOKE_FILE, s); |
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return TRUE; |
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|
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case IDOK: |
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list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON); |
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idx = SendMessage (list, LB_GETCURSEL, 0, 0); |
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if (idx < 0 || idx > 3) { |
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show_balloon_msg (GetDlgItem (dlg, IDC_KEYREVOKE_REASON), |
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_("Please select a reason."), IDI_ERROR); |
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return TRUE; |
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} |
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if (!GetDlgItemText (dlg, IDC_KEYREVOKE_FILE, file, |
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DIM (file)-1)) { |
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show_balloon_msg (GetDlgItem (dlg, IDC_KEYREVOKE_FILE), |
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_("Please enter a file name."), IDI_ERROR); |
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return TRUE; |
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} |
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if (check_file_name (file, IS_PATH)) { |
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show_balloon_msg (GetDlgItem (dlg, IDC_KEYREVOKE_FILE), |
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_("The file name contains one or more illegal characters."), |
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IDI_ERROR); |
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return TRUE; |
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} |
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|
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/* FIXME: check if use_desc is still required */ |
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use_desc = 1; |
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if (!GetDlgItemText_utf8 (dlg, IDC_KEYREVOKE_TEXT, &desc)) |
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use_desc = 0; |
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if (!GetDlgItemText_utf8 (dlg, IDC_KEYREVOKE_PWD, &pwd)) { |
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show_balloon_msg (GetDlgItem (dlg, IDC_KEYREVOKE_PWD), |
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_("Please enter the passphrase."), IDI_ERROR); |
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// FIXME: what if the key is not protected? |
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return TRUE; |
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} |
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|
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inp_data = generate_revoke_input (idx, desc, pwd); |
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err = gpg_revoke_cert (k->internal, inp_data, k->keyid, &revcert); |
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sfree_if_alloc (inp_data); |
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sfree_if_alloc (desc); |
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sfree_if_alloc (pwd); |
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if (err) { |
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msg_box (dlg, gpgme_strerror (err), |
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_("Key Revocation Cert"), MB_ERR); |
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safe_free (revcert); |
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return TRUE; |
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} |
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else { |
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show_msg (dlg, 1000, _("Revocation certificate generated.")); |
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msg_box (dlg, warning, _("Key Revocation Cert"), MB_INFO); |
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release_cert_as_file (revcert, file); |
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EndDialog (dlg, TRUE); |
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} |
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return TRUE; |
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|
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case IDCANCEL: |
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EndDialog (dlg, FALSE); |
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return TRUE; |
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} |
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break; |
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} |
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|
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return FALSE; |
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} |
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