trunk/Src/wptKeyRevokeDlg.cpp

/* wptKeyRevokeDlg.cpp - Key revocation dialog
 *      Copyright (C) 2001, 2002, 2003, 2005, 2006 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)
{
    winpt_key_s k;
    size_t i;

    memset (&k, 0, sizeof (k));
    if (winpt_get_pubkey (keyid, &k))
        BUG (NULL);
    _snprintf (fname, flen-1, "%s_RevocationCert.asc", k.ext->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 Cert"), MB_ERR);
    safe_free (revcert);
}


static void
on_init_dialog (HWND dlg)
{
    HWND list;

    SetWindowText (dlg, _("Key Revocation Cert"));
    SetDlgItemText (dlg, IDCANCEL, _("&Cancel"));
    SetDlgItemText (dlg, IDC_KEYREVOKE_REASONINF, _("Reason for revocation"));
    SetDlgItemText (dlg, IDC_KEYREVOKE_OPTINF, _("Optional description text"));
    SetDlgItemText (dlg, IDC_KEYREVOKE_PWDINF, _("&Passphrase"));
    SetDlgItemText (dlg, IDC_KEYREVOKE_OUTINF, _("Output file"));
    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"));
    SendMessage (list, LB_SETCURSEL, (WPARAM)0, 0);
    SetForegroundWindow (dlg);
    center_window (dlg, NULL);
}

/* Generate the data expected by the gpg command handler. */
static char* 
generate_revoke_input (int code, const char *cmt, const char *pass)
{
    const char *fmt;
    char *p;
    size_t n;

    fmt = "Y\n"     /*  gen_revoke.okay */
          "%d\n"    /* ask_revocation_reason.code */
          "%s\n"    /* ask_revocation_reason.text */
          "%s"      /* text != NULL '\n' otherwise '' */
          "Y\n"     /* ask_revocation_reason.okay */
          "%s\n";   /* passphrase.enter. */
    n = strlen (fmt) + 32;
    if (pass)
        n += strlen (pass) + 1;
    if (cmt)
        n += strlen (cmt) + 1;
    p = new char[n+1];
    if (!p)
        BUG (0);
    sprintf (p, fmt, code, cmt? cmt : "", cmt? "\n" : "", pass? pass : "");
    return p;
}


/* 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 file[256];
    char pwd[256];
    char *desc=NULL;
    char *inp_data = NULL, *revcert=NULL;
    const char *warning =
        _("Please move this certificate to a medium where it can be"
          "stored in a safe place (floppy, CDR, etc..).\n"
          "If an attacker gets access to this certificate he can use it to "
          "render your key unusable!");
    
    switch( msg ) {
    case WM_INITDIALOG:
        if (!lparam)
            BUG (0);
        k = (winpt_key_t)lparam;
        on_init_dialog (dlg);
        return TRUE;
        
    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 Cert"), MB_ERR);
                return TRUE;
            }
            if (!GetDlgItemText (dlg, IDC_KEYREVOKE_FILE, file, sizeof (file)-1)) {
                msg_box (dlg, _("Please enter a file name."),
                         _("Key Revocation Cert"), MB_ERR);
                return TRUE;
            }
            use_desc = 1;
            if (!GetDlgItemText_utf8 (dlg, IDC_KEYREVOKE_TEXT, &desc))
                use_desc = 0;
            if (!GetDlgItemText (dlg, IDC_KEYREVOKE_PWD, pwd, sizeof (pwd)-1)) {
                msg_box (dlg, _("Please enter the passphrase."), 
                         _("Key Revocation Cert"), MB_ERR);
                return TRUE;
            }
          
            inp_data = generate_revoke_input (idx, desc, pwd);
            err = gpg_revoke_cert (k->internal, inp_data, k->keyid, &revcert);
            sfree_if_alloc (inp_data);
            sfree_if_alloc (desc);
            if (err) {
                msg_box (dlg, gpgme_strerror (err), _("Key Revocation Cert"), MB_ERR);
                safe_free (revcert);
                return TRUE;
            }
            else {
                show_msg (dlg, 1000, _("Revocation certificate generated."));
                msg_box (dlg, warning, _("Key Revocation Cert"), MB_INFO);
                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	twoaday	225	* Copyright (C) 2001, 2002, 2003, 2005, 2006 Timo Schulz
3	werner	36	* 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	twoaday	205	winpt_key_s k;
46	werner	36	size_t i;
47
48	twoaday	205	memset (&k, 0, sizeof (k));
49			if (winpt_get_pubkey (keyid, &k))
50	twoaday	129	BUG (NULL);
51	twoaday	205	_snprintf (fname, flen-1, "%s_RevocationCert.asc", k.ext->uids->name);
52	twoaday	129	for (i=0; i < strlen (fname); i++) {
53	werner	36	if (fname[i] == ' ')
54			fname[i] = '_';
55	twoaday	129	}
56	werner	36	}
57
58
59			/* Release the cert data and store it in the file @fname. */
60			static void
61			release_cert_as_file (char revcert, const char fname)
62			{
63			gpgme_error_t err;
64			gpgme_data_t rev;
65
66			err = gpgme_data_new_from_mem (&rev, revcert, strlen (revcert), 1);
67			if (!err)
68			gpg_data_release_and_set_file (rev, fname);
69			else
70	twoaday	129	msg_box (NULL, gpgme_strerror (err), _("Key Revocation Cert"), MB_ERR);
71	twoaday	200	safe_free (revcert);
72	werner	36	}
73
74
75	twoaday	200	static void
76			on_init_dialog (HWND dlg)
77			{
78			HWND list;
79
80			SetWindowText (dlg, _("Key Revocation Cert"));
81			SetDlgItemText (dlg, IDCANCEL, _("&Cancel"));
82			SetDlgItemText (dlg, IDC_KEYREVOKE_REASONINF, _("Reason for revocation"));
83			SetDlgItemText (dlg, IDC_KEYREVOKE_OPTINF, _("Optional description text"));
84			SetDlgItemText (dlg, IDC_KEYREVOKE_PWDINF, _("&Passphrase"));
85			SetDlgItemText (dlg, IDC_KEYREVOKE_OUTINF, _("Output file"));
86			list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON);
87			listbox_add_string (list, _("0. No reason specified"));
88			listbox_add_string (list, _("1. Key has been compromised"));
89			listbox_add_string (list, _("2. Key is superseded"));
90			listbox_add_string (list, _("3. Key is no longer used"));
91			SendMessage (list, LB_SETCURSEL, (WPARAM)0, 0);
92			SetForegroundWindow (dlg);
93			center_window (dlg, NULL);
94			}
95
96	twoaday	208	/* Generate the data expected by the gpg command handler. */
97			static char*
98			generate_revoke_input (int code, const char cmt, const char pass)
99			{
100			const char *fmt;
101			char *p;
102			size_t n;
103	twoaday	200
104	twoaday	208	fmt = "Y\n" /* gen_revoke.okay */
105			"%d\n" /* ask_revocation_reason.code */
106			"%s\n" /* ask_revocation_reason.text */
107			"%s" /* text != NULL '\n' otherwise '' */
108			"Y\n" /* ask_revocation_reason.okay */
109			"%s\n"; /* passphrase.enter. */
110			n = strlen (fmt) + 32;
111			if (pass)
112			n += strlen (pass) + 1;
113			if (cmt)
114			n += strlen (cmt) + 1;
115			p = new char[n+1];
116			if (!p)
117			BUG (0);
118			sprintf (p, fmt, code, cmt? cmt : "", cmt? "\n" : "", pass? pass : "");
119			return p;
120			}
121
122
123	werner	36	/* Dialog box procedure for key revocation. */
124			BOOL CALLBACK
125			key_revoke_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
126			{
127			static winpt_key_t k;
128			gpgme_error_t err;
129	twoaday	129	HWND list;
130	twoaday	65	int idx, use_desc;
131	twoaday	204	char file[256];
132	werner	36	char pwd[256];
133	twoaday	204	char *desc=NULL;
134	werner	36	char inp_data = NULL, revcert=NULL;
135	twoaday	129	const char *warning =
136			_("Please move this certificate to a medium where it can be"
137			"stored in a safe place (floppy, CDR, etc..).\n"
138			"If an attacker gets access to this certificate he can use it to "
139			"render your key unusable!");
140	werner	36
141			switch( msg ) {
142			case WM_INITDIALOG:
143	twoaday	200	if (!lparam)
144	twoaday	225	BUG (0);
145	twoaday	208	k = (winpt_key_t)lparam;
146	twoaday	200	on_init_dialog (dlg);
147	werner	36	return TRUE;
148
149			case WM_COMMAND:
150	twoaday	129	switch (LOWORD (wparam)) {
151	werner	36	case IDC_KEYREVOKE_CHOOSE:
152			const char *s;
153			mk_cert_fname (k->keyid, file, sizeof file-1);
154	twoaday	77	s = get_filesave_dlg (dlg, _("Choose File to save the Certificate"), NULL, file);
155	werner	36	if (s && *s)
156			SetDlgItemText (dlg, IDC_KEYREVOKE_FILE, s);
157			return TRUE;
158
159			case IDOK:
160			list = GetDlgItem (dlg, IDC_KEYREVOKE_REASON);
161	twoaday	65	idx = SendMessage (list, LB_GETCURSEL, 0, 0);
162	werner	36	if (idx < 0 \|\| idx > 3) {
163	twoaday	225	msg_box (dlg, _("Please select a reason."),
164	twoaday	129	_("Key Revocation Cert"), MB_ERR);
165	werner	36	return TRUE;
166			}
167			if (!GetDlgItemText (dlg, IDC_KEYREVOKE_FILE, file, sizeof (file)-1)) {
168	twoaday	225	msg_box (dlg, _("Please enter a file name."),
169	twoaday	129	_("Key Revocation Cert"), MB_ERR);
170	werner	36	return TRUE;
171			}
172			use_desc = 1;
173	twoaday	204	if (!GetDlgItemText_utf8 (dlg, IDC_KEYREVOKE_TEXT, &desc))
174	werner	36	use_desc = 0;
175	twoaday	200	if (!GetDlgItemText (dlg, IDC_KEYREVOKE_PWD, pwd, sizeof (pwd)-1)) {
176	twoaday	129	msg_box (dlg, _("Please enter the passphrase."),
177			_("Key Revocation Cert"), MB_ERR);
178	werner	36	return TRUE;
179			}
180
181	twoaday	204	inp_data = generate_revoke_input (idx, desc, pwd);
182	twoaday	208	err = gpg_revoke_cert (k->internal, inp_data, k->keyid, &revcert);
183	twoaday	225	sfree_if_alloc (inp_data);
184			sfree_if_alloc (desc);
185	werner	36	if (err) {
186	twoaday	129	msg_box (dlg, gpgme_strerror (err), _("Key Revocation Cert"), MB_ERR);
187	twoaday	200	safe_free (revcert);
188	twoaday	225	return TRUE;
189	werner	36	}
190			else {
191	twoaday	129	show_msg (dlg, 1000, _("Revocation certificate generated."));
192			msg_box (dlg, warning, _("Key Revocation Cert"), MB_INFO);
193	werner	36	release_cert_as_file (revcert, file);
194	twoaday	225	EndDialog (dlg, TRUE);
195	werner	36	}
196			return TRUE;
197
198			case IDCANCEL:
199			EndDialog (dlg, FALSE);
200			return FALSE;
201			}
202			break;
203			}
204
205			return FALSE;
206			}