trunk/Src/wptKeyRevokeDlg.cpp

/* wptKeyRevokeDlg.cpp - Key revocation dialog
 *      Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz
 *      Copyright (C) 2005 g10 Code GmbH
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * WinPT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WinPT; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <windows.h>

#include "resource.h"
#include "gpgme.h"
#include "wptErrors.h"
#include "wptGPG.h"
#include "wptW32API.h"
#include "wptTypes.h"
#include "wptCommonCtl.h"
#include "wptContext.h" /* for passphrase_s */
#include "wptDlgs.h"
#include "wptNLS.h"
#include "wptUTF8.h"


/* Generate a file template for the cert based on the key 
   with the keyid @keyid. */
static void
mk_cert_fname (const char *keyid, char *fname, size_t flen)
{
    gpgme_key_t k;
    size_t i;

    get_pubkey (keyid, &k);
    _snprintf (fname, flen-1, "%s-RevocationCert.asc", k->uids->name);
    for (i=0; i < strlen (fname); i++)
        if (fname[i] == ' ')
            fname[i] = '_';
}


/* Release the cert data and store it in the file @fname. */
static void
release_cert_as_file (char *revcert, const char *fname)
{
    gpgme_error_t err;
    gpgme_data_t rev;

    err = gpgme_data_new_from_mem (&rev, revcert, strlen (revcert), 1);
    if (!err)
        gpg_data_release_and_set_file (rev, fname);
    else
        msg_box (NULL, gpgme_strerror (err), _("Key Revocation"), MB_ERR);
    free (revcert);
}


/* Dialog box procedure for key revocation. */
BOOL CALLBACK
key_revoke_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
{       
    static winpt_key_t k;
    gpgme_error_t err;
    HWND list;  
    int idx, use_desc;
    char desc[256], file[256], *p = NULL;
    char pwd[256];
    char *inp_data = NULL, *revcert=NULL;
    
    switch( msg ) {
    case WM_INITDIALOG:
        if( !lparam )
            dlg_fatal_error(dlg, "Could not get dialog param!");
        k = (winpt_key_t )lparam;
    #ifndef LANG_DE
        SetWindowText (dlg, _("Key Revocation"));
    #endif
        SetDlgItemText (dlg, IDC_KEYREVOKE_HINT,
                        _("Please move this certificate to a medium where it can be "
                          "stored in a safe place (floppy, CDR, etc..). "
                          "If an attacker gets access to this certificate he can use it to "
                          "render your key unusable!"));
        list = GetDlgItem( dlg, IDC_KEYREVOKE_REASON );
        listbox_add_string (list, _("0. No reason specified"));
        listbox_add_string (list, _("1. Key has been compromised"));
        listbox_add_string (list, _("2. Key is superseded"));
        listbox_add_string (list, _("3. Key is no longer used"));
        SetForegroundWindow (dlg);
        center_window (dlg, NULL);
        return TRUE;
        
    case WM_SYSCOMMAND:
        if( LOWORD( wparam ) == SC_CLOSE ) {
            SetDlgItemText( dlg, IDC_KEYREVOKE_PWD, "" );
            EndDialog( dlg, TRUE );
        }
        return FALSE;
        
    case WM_COMMAND:
        switch( LOWORD( wparam ) ) {
        case IDC_KEYREVOKE_CHOOSE:
            const char *s;
            mk_cert_fname (k->keyid, file, sizeof file-1);
            s = get_filesave_dlg (dlg, _("Choose File to save the Certificate"), NULL, file);
            if (s && *s)
                SetDlgItemText (dlg, IDC_KEYREVOKE_FILE, s);
            return TRUE;

        case IDOK:
            list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON);
            idx = SendMessage (list, LB_GETCURSEL, 0, 0);
            if (idx < 0 || idx > 3) {
                msg_box (dlg, _("Please select a reason."), 
                         _("Key Revocation"), MB_ERR);
                return TRUE;
            }
            if (!GetDlgItemText (dlg, IDC_KEYREVOKE_FILE, file, sizeof (file)-1)) {
                msg_box (dlg, _("Please enter a file name."), 
                         _("Key Revocation"), MB_ERR);
                return TRUE;
            }
            use_desc = 1;
            if (!GetDlgItemText (dlg, IDC_KEYREVOKE_TEXT, desc, sizeof (desc)-1))
                use_desc = 0;
            if( !GetDlgItemText (dlg, IDC_KEYREVOKE_PWD, pwd, sizeof (pwd)-1)) {
                msg_box (dlg, _("Please enter the passphrase."), _("Key Revocation"), MB_ERR);
                return TRUE;
            }
          
            if (use_desc)
                p = wincp_to_utf8 (desc, strlen (desc));
            /* we use the keyid to avoid charset problems and UTF8 encodings.*/
            inp_data = generate_revoc_input (idx, use_desc? p : NULL, pwd);
            
            err = gpg_revoke_key (inp_data, k->keyid, &revcert);
            wipememory (&pwd, sizeof (pwd));
            memset (inp_data, 0, strlen (inp_data));
            free (inp_data);
            free_if_alloc (p);

            if (err) {
                msg_box (dlg, gpgme_strerror (err), _("Key Revocation"), MB_ERR);
                if (revcert)
                    free (revcert);
            }
            else {
                msg_box (dlg, _("Revocation certificate generated."), _("GnuPG Status"), MB_OK);
                release_cert_as_file (revcert, file);
            }
            EndDialog (dlg, TRUE);
            return TRUE;
            
        case IDCANCEL:
            EndDialog (dlg, FALSE);
            return FALSE;
        }
        break;
    }
    
    return FALSE;
}
1	werner	36	/* wptKeyRevokeDlg.cpp - Key revocation dialog
2			* Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz
3			* Copyright (C) 2005 g10 Code GmbH
4			*
5			* This file is part of WinPT.
6			*
7			* WinPT is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* WinPT is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with WinPT; if not, write to the Free Software Foundation,
19			* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
20			*/
21			#ifdef HAVE_CONFIG_H
22			#include <config.h>
23			#endif
24
25			#include <windows.h>
26
27	werner	47	#include "resource.h"
28	werner	36	#include "gpgme.h"
29			#include "wptErrors.h"
30			#include "wptGPG.h"
31			#include "wptW32API.h"
32			#include "wptTypes.h"
33			#include "wptCommonCtl.h"
34			#include "wptContext.h" /* for passphrase_s */
35			#include "wptDlgs.h"
36			#include "wptNLS.h"
37			#include "wptUTF8.h"
38
39
40			/* Generate a file template for the cert based on the key
41			with the keyid @keyid. */
42			static void
43			mk_cert_fname (const char keyid, char fname, size_t flen)
44			{
45			gpgme_key_t k;
46			size_t i;
47
48			get_pubkey (keyid, &k);
49			_snprintf (fname, flen-1, "%s-RevocationCert.asc", k->uids->name);
50			for (i=0; i < strlen (fname); i++)
51			if (fname[i] == ' ')
52			fname[i] = '_';
53			}
54
55
56			/* Release the cert data and store it in the file @fname. */
57			static void
58			release_cert_as_file (char revcert, const char fname)
59			{
60			gpgme_error_t err;
61			gpgme_data_t rev;
62
63			err = gpgme_data_new_from_mem (&rev, revcert, strlen (revcert), 1);
64			if (!err)
65			gpg_data_release_and_set_file (rev, fname);
66			else
67			msg_box (NULL, gpgme_strerror (err), _("Key Revocation"), MB_ERR);
68			free (revcert);
69			}
70
71
72			/* Dialog box procedure for key revocation. */
73			BOOL CALLBACK
74			key_revoke_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
75			{
76			static winpt_key_t k;
77			gpgme_error_t err;
78			HWND list;
79	twoaday	65	int idx, use_desc;
80	werner	36	char desc[256], file[256], *p = NULL;
81			char pwd[256];
82			char inp_data = NULL, revcert=NULL;
83
84			switch( msg ) {
85			case WM_INITDIALOG:
86			if( !lparam )
87			dlg_fatal_error(dlg, "Could not get dialog param!");
88			k = (winpt_key_t )lparam;
89			#ifndef LANG_DE
90			SetWindowText (dlg, _("Key Revocation"));
91			#endif
92			SetDlgItemText (dlg, IDC_KEYREVOKE_HINT,
93			_("Please move this certificate to a medium where it can be "
94			"stored in a safe place (floppy, CDR, etc..). "
95			"If an attacker gets access to this certificate he can use it to "
96			"render your key unusable!"));
97			list = GetDlgItem( dlg, IDC_KEYREVOKE_REASON );
98			listbox_add_string (list, _("0. No reason specified"));
99			listbox_add_string (list, _("1. Key has been compromised"));
100			listbox_add_string (list, _("2. Key is superseded"));
101			listbox_add_string (list, _("3. Key is no longer used"));
102			SetForegroundWindow (dlg);
103			center_window (dlg, NULL);
104			return TRUE;
105
106			case WM_SYSCOMMAND:
107			if( LOWORD( wparam ) == SC_CLOSE ) {
108			SetDlgItemText( dlg, IDC_KEYREVOKE_PWD, "" );
109			EndDialog( dlg, TRUE );
110			}
111			return FALSE;
112
113			case WM_COMMAND:
114			switch( LOWORD( wparam ) ) {
115			case IDC_KEYREVOKE_CHOOSE:
116			const char *s;
117			mk_cert_fname (k->keyid, file, sizeof file-1);
118	twoaday	77	s = get_filesave_dlg (dlg, _("Choose File to save the Certificate"), NULL, file);
119	werner	36	if (s && *s)
120			SetDlgItemText (dlg, IDC_KEYREVOKE_FILE, s);
121			return TRUE;
122
123			case IDOK:
124			list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON);
125	twoaday	65	idx = SendMessage (list, LB_GETCURSEL, 0, 0);
126	werner	36	if (idx < 0 \|\| idx > 3) {
127			msg_box (dlg, _("Please select a reason."),
128			_("Key Revocation"), MB_ERR);
129			return TRUE;
130			}
131			if (!GetDlgItemText (dlg, IDC_KEYREVOKE_FILE, file, sizeof (file)-1)) {
132			msg_box (dlg, _("Please enter a file name."),
133			_("Key Revocation"), MB_ERR);
134			return TRUE;
135			}
136			use_desc = 1;
137			if (!GetDlgItemText (dlg, IDC_KEYREVOKE_TEXT, desc, sizeof (desc)-1))
138			use_desc = 0;
139			if( !GetDlgItemText (dlg, IDC_KEYREVOKE_PWD, pwd, sizeof (pwd)-1)) {
140			msg_box (dlg, _("Please enter the passphrase."), _("Key Revocation"), MB_ERR);
141			return TRUE;
142			}
143
144			if (use_desc)
145			p = wincp_to_utf8 (desc, strlen (desc));
146			/* we use the keyid to avoid charset problems and UTF8 encodings.*/
147			inp_data = generate_revoc_input (idx, use_desc? p : NULL, pwd);
148
149			err = gpg_revoke_key (inp_data, k->keyid, &revcert);
150			wipememory (&pwd, sizeof (pwd));
151			memset (inp_data, 0, strlen (inp_data));
152			free (inp_data);
153			free_if_alloc (p);
154
155			if (err) {
156			msg_box (dlg, gpgme_strerror (err), _("Key Revocation"), MB_ERR);
157			if (revcert)
158			free (revcert);
159			}
160			else {
161			msg_box (dlg, _("Revocation certificate generated."), _("GnuPG Status"), MB_OK);
162			release_cert_as_file (revcert, file);
163			}
164			EndDialog (dlg, TRUE);
165			return TRUE;
166
167			case IDCANCEL:
168			EndDialog (dlg, FALSE);
169			return FALSE;
170			}
171			break;
172			}
173
174			return FALSE;
175			}