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
 */
#include <windows.h>

#include "../resource.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"
#include "w32gpgme.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, chk = 0;
    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_filename_dlg (dlg, FILE_SAVE, _("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, NULL, NULL);
            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);
            memset (&pwd, 0, 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	twoaday	2	/* wptKeyRevokeDlg.cpp - Key revocation dialog
2	twoaday	22	* Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz
3	twoaday	24	* Copyright (C) 2005 g10 Code GmbH
4	twoaday	2	*
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			#include <windows.h>
22
23			#include "../resource.h"
24			#include "wptErrors.h"
25			#include "wptGPG.h"
26			#include "wptW32API.h"
27			#include "wptTypes.h"
28			#include "wptCommonCtl.h"
29			#include "wptContext.h" /* for passphrase_s */
30			#include "wptDlgs.h"
31			#include "wptNLS.h"
32			#include "wptUTF8.h"
33	twoaday	24	#include "w32gpgme.h"
34	twoaday	2
35
36	twoaday	24	/* Generate a file template for the cert based on the key with the keyid @keyid. */
37			static void
38			mk_cert_fname (const char keyid, char fname, size_t flen)
39	twoaday	2	{
40	twoaday	24	gpgme_key_t k;
41			size_t i;
42	twoaday	2
43	twoaday	24	get_pubkey (keyid, &k);
44			_snprintf (fname, flen-1, "%s-RevocationCert.asc", k->uids->name);
45			for (i=0; i < strlen (fname); i++)
46			if (fname[i] == ' ')
47			fname[i] = '_';
48	twoaday	23	}
49	twoaday	2
50
51	twoaday	24	/* Release the cert data and store it in the file @fname. */
52			static void
53			release_cert_as_file (char revcert, const char fname)
54			{
55			gpgme_error_t err;
56			gpgme_data_t rev;
57
58			err = gpgme_data_new_from_mem (&rev, revcert, strlen (revcert), 1);
59			if (!err)
60			gpg_data_release_and_set_file (rev, fname);
61			else
62			msg_box (NULL, gpgme_strerror (err), _("Key Revocation"), MB_ERR);
63			free (revcert);
64			}
65
66
67			/* Dialog box procedure for key revocation. */
68	twoaday	2	BOOL CALLBACK
69	twoaday	22	key_revoke_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
70	twoaday	2	{
71			static winpt_key_t k;
72	twoaday	24	gpgme_error_t err;
73	twoaday	2	HWND list;
74	twoaday	23	int idx, use_desc, chk = 0;
75			char desc[256], file[256], *p = NULL;
76	twoaday	2	char pwd[256];
77	twoaday	24	char inp_data = NULL, revcert=NULL;
78	twoaday	2
79			switch( msg ) {
80			case WM_INITDIALOG:
81			if( !lparam )
82			dlg_fatal_error(dlg, "Could not get dialog param!");
83			k = (winpt_key_t )lparam;
84	twoaday	23	#ifndef LANG_DE
85	twoaday	2	SetWindowText( dlg, _("Key Revocation") );
86	twoaday	23	#endif
87			SetDlgItemText (dlg, IDC_KEYREVOKE_HINT,
88			_("Please move this certificate to a medium where it can be "
89			"stored in a safe place (floppy, CDR, etc..). "
90			"If an attacker gets access to this certificate he can use it to "
91			"render your key unusable!"));
92	twoaday	2	list = GetDlgItem( dlg, IDC_KEYREVOKE_REASON );
93	twoaday	23	listbox_add_string (list, _("0. No reason specified"));
94			listbox_add_string (list, _("1. Key has been compromised"));
95			listbox_add_string (list, _("2. Key is superseded"));
96			listbox_add_string (list, _("3. Key is no longer used"));
97	twoaday	2	SetForegroundWindow (dlg);
98	twoaday	23	center_window (dlg, NULL);
99	twoaday	2	return TRUE;
100
101			case WM_SYSCOMMAND:
102			if( LOWORD( wparam ) == SC_CLOSE ) {
103			SetDlgItemText( dlg, IDC_KEYREVOKE_PWD, "" );
104			EndDialog( dlg, TRUE );
105			}
106			return FALSE;
107
108			case WM_COMMAND:
109			switch( LOWORD( wparam ) ) {
110			case IDC_KEYREVOKE_CHOOSE:
111	twoaday	23	const char *s;
112	twoaday	24	mk_cert_fname (k->keyid, file, sizeof file-1);
113	twoaday	23	s = get_filename_dlg (dlg, FILE_SAVE, _("Choose File to save the Certificate"), NULL, file);
114			if (s && *s)
115			SetDlgItemText (dlg, IDC_KEYREVOKE_FILE, s);
116	twoaday	2	return TRUE;
117
118			case IDOK:
119	twoaday	23	list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON);
120			idx = SendMessage (list, LB_GETCURSEL, NULL, NULL);
121			if (idx < 0 \|\| idx > 3) {
122			msg_box (dlg, _("Please select a reason."), _("Key Revocation"), MB_ERR);
123	twoaday	24	return TRUE;
124	twoaday	2	}
125	twoaday	23	if (!GetDlgItemText (dlg, IDC_KEYREVOKE_FILE, file, sizeof file-1)) {
126	twoaday	24	msg_box (dlg, _("Please enter a file name."), _("Key Revocation"), MB_ERR);
127			return TRUE;
128	twoaday	2	}
129			use_desc = 1;
130	twoaday	24	if (!GetDlgItemText (dlg, IDC_KEYREVOKE_TEXT, desc, sizeof desc-1))
131	twoaday	2	use_desc = 0;
132			if( !GetDlgItemText( dlg, IDC_KEYREVOKE_PWD, pwd, sizeof pwd-1 ) ) {
133			msg_box( dlg, _("Please enter the passphrase."), _("Key Revocation"), MB_ERR );
134	twoaday	24	return TRUE;
135	twoaday	2	}
136	twoaday	24
137			if (use_desc)
138	twoaday	2	p = wincp_to_utf8 (desc, strlen (desc));
139			/* we use the keyid to avoid charset problems and UTF8 encodings.*/
140	twoaday	24	inp_data = generate_revoc_input (idx, use_desc? p : NULL, pwd);
141	twoaday	2
142	twoaday	24	err = gpg_revoke_key (inp_data, k->keyid, &revcert);
143			memset (&pwd, 0, sizeof pwd);
144			memset (inp_data, 0, strlen (inp_data));
145			free (inp_data);
146			free_if_alloc (p);
147
148			if (err) {
149			msg_box (dlg, gpgme_strerror (err), _("Key Revocation"), MB_ERR);
150			if (revcert)
151			free (revcert);
152			}
153			else {
154			msg_box (dlg, _("Revocation certificate generated."), _("GnuPG Status"), MB_OK);
155			release_cert_as_file (revcert, file);
156			}
157			EndDialog (dlg, TRUE);
158	twoaday	2	return TRUE;
159
160			case IDCANCEL:
161			EndDialog( dlg, FALSE );
162			return FALSE;
163			}
164			break;
165			}
166
167			return FALSE;
168	twoaday	24	}
169