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	/* 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	#include "resource.h"
28	#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	int idx, use_desc;
80	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	s = get_filesave_dlg (dlg, _("Choose File to save the Certificate"), NULL, file);
119	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	idx = SendMessage (list, LB_GETCURSEL, 0, 0);
126	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	}