trunk/Src/wptPassphraseDlg.cpp

/* wptPassphraseDlg.cpp - Dialog to get the passphrase
 *      Copyright (C) 2001-2005 Timo Schulz
 *
 * 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 "wptGPG.h"
#include "wptCommonCtl.h"
#include "wptContext.h"
#include "wptDlgs.h"
#include "wptNLS.h"
#include "wptW32API.h"
#include "wptUTF8.h"
#include "wptVersion.h"
#include "wptTypes.h"


struct passphrase_s {
    char *title;    /* title of the dialog. */
    char pwd[256];  /* the actual passphrase. */
    int strict;     /* do a simple check how good the passphrase is. */
    int repeat;     /* Indicate last try was wrong. */   
    int cancel;     /* 1 if user cancelled operation. */
};


/* Dialog procedure to request a passphrase from the user. */
static BOOL CALLBACK
passwd_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
{
    static passphrase_s * pwd;
    int nbytes;
    
    switch (msg) {
    case WM_INITDIALOG:
        pwd = (passphrase_s *)lparam;
        if (pwd == NULL)
            dlg_fatal_error (dlg, "Could not get dialog param!");
    #ifndef LANG_DE
        SetWindowText (dlg, _("Passphrase Dialog"));
    #endif
        CheckDlgButton (dlg, IDC_PASSWD_HIDE, BST_CHECKED);
        if (pwd->title)
            SetWindowText (dlg, pwd->title);
        if (pwd->repeat)
            SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Repeat Passphrase"));
        else
            SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Enter Passphrase"));
        SetDlgItemText (dlg, IDC_PASSWD_HIDE, _("&Hide Typing"));
        SetFocus (GetDlgItem (dlg, IDC_PASSWD_PWD ));
        center_window2 (dlg, NULL, HWND_TOPMOST);
        center_window (dlg, NULL);
        SetForegroundWindow (dlg);
        return FALSE;
        
    case WM_COMMAND:
        if (HIWORD (wparam) == BN_CLICKED && 
            LOWORD (wparam) == IDC_PASSWD_HIDE) {
            HWND hwnd = GetDlgItem (dlg, IDC_PASSWD_PWD);
            int hide = IsDlgButtonChecked (dlg, IDC_PASSWD_HIDE);
            SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0);
            SetFocus (hwnd);
        }

        switch (LOWORD (wparam)) {
        case IDOK:
            pwd->cancel = 0;
            nbytes = GetDlgItemText( dlg, IDC_PASSWD_PWD, pwd->pwd, DIM (pwd->pwd)-1);
            if (!nbytes)
                strcpy (pwd->pwd, "");
            else if (pwd->strict && check_passwd_quality (pwd->pwd, 0)) {
                int id = msg_box (dlg, _("Your passphrase should be at least 8 characters"
                                         " long\nand should contain non-alphabetic characters."
                                         "\n\nStill proceed?"),
                                  _("Key Generation"), MB_ICONWARNING|MB_YESNO);
                if (id == IDNO)
                    return TRUE;
            }
            SetDlgItemText (dlg, IDC_PASSWD_PWD, "");
            EndDialog (dlg, TRUE);
            return TRUE;
            
        case IDCANCEL:
            pwd->cancel = 1;
            EndDialog (dlg, FALSE);
            return TRUE;
        }
        break;
    }
    
    return FALSE;
}


/* Request a passphrase from the user. @title is the title of the
   dialog and @ret_cancel is true if user cancelled the operation.
   Return value: the passphrase or NUL for an error. */
char*
request_passphrase (const char *title, int flags, int *ret_cancel)
{
    passphrase_s pass;
    char *p;

    memset (&pass, 0, sizeof (pass));
    if (title && *title) {
        pass.title = m_strdup (title);
        if (!pass.title)
            BUG (0);
    }
    pass.repeat = flags & PASSDLG_INIT? 0 : 1;
    pass.strict = flags & PASSDLG_STRICT? 1 : 0;
    DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_PASSWD, glob_hwnd,
                    passwd_dlg_proc, (LPARAM)&pass);
    if (pass.cancel == 1) {
        *ret_cancel = 1;
        return NULL;
    }
    p = m_strdup (pass.pwd);
    if (!p)
        BUG (0);
    free_if_alloc (pass.title);
    memset (&pass, 0, sizeof (pass));
    return p;
}


/* Request a passphrase from the user but also confirm the passphrase
   to make sure there is no typo. Arguments same as in the normal version
   of the function. */
char*
request_passphrase2 (const char *title, int flags, int *ret_cancel)
{
    char *pass1, *pass2;
    int equal = 0, cancel = 0;

    *ret_cancel = 1;
    while (!equal) {
        pass1 = request_passphrase (title, PASSDLG_INIT|flags, &cancel);
        if (cancel)
            return NULL;
        pass2 = request_passphrase (title, PASSDLG_REPEAT, &cancel);
        if (cancel) {
            sfree_if_alloc (pass1);
            return NULL;
        }

        if (strcmp (pass1, pass2)) {
            msg_box (NULL, _("Passphrases do not match. Please try again."),
                     title, MB_INFO);
            sfree_if_alloc (pass1);
            sfree_if_alloc (pass2);
        }
        else {
            if (is_8bit_string (pass1)) {
                msg_box (NULL, _("The passphrase contains 8-bit characters.\n"
                                 "It is not suggested to use charset specific characters."),
                         title, MB_ERR);
                equal = 0;
                sfree_if_alloc (pass1);
                sfree_if_alloc (pass2);
            }
            else
                equal = 1;
        }
    }
    sfree_if_alloc (pass2);
    *ret_cancel = 0;
    return pass1;
}
1	/* wptPassphraseDlg.cpp - Dialog to get the passphrase
2	* Copyright (C) 2001-2005 Timo Schulz
3	*
4	* This file is part of WinPT.
5	*
6	* WinPT is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* WinPT is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with WinPT; if not, write to the Free Software Foundation,
18	* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19	*/
20	#ifdef HAVE_CONFIG_H
21	#include <config.h>
22	#endif
23
24	#include <windows.h>
25
26	#include "resource.h"
27	#include "wptGPG.h"
28	#include "wptCommonCtl.h"
29	#include "wptContext.h"
30	#include "wptDlgs.h"
31	#include "wptNLS.h"
32	#include "wptW32API.h"
33	#include "wptUTF8.h"
34	#include "wptVersion.h"
35	#include "wptTypes.h"
36
37
38	struct passphrase_s {
39	char title; / title of the dialog. */
40	char pwd[256]; /* the actual passphrase. */
41	int strict; /* do a simple check how good the passphrase is. */
42	int repeat; /* Indicate last try was wrong. */
43	int cancel; /* 1 if user cancelled operation. */
44	};
45
46
47	/* Dialog procedure to request a passphrase from the user. */
48	static BOOL CALLBACK
49	passwd_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
50	{
51	static passphrase_s * pwd;
52	int nbytes;
53
54	switch (msg) {
55	case WM_INITDIALOG:
56	pwd = (passphrase_s *)lparam;
57	if (pwd == NULL)
58	dlg_fatal_error (dlg, "Could not get dialog param!");
59	#ifndef LANG_DE
60	SetWindowText (dlg, _("Passphrase Dialog"));
61	#endif
62	CheckDlgButton (dlg, IDC_PASSWD_HIDE, BST_CHECKED);
63	if (pwd->title)
64	SetWindowText (dlg, pwd->title);
65	if (pwd->repeat)
66	SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Repeat Passphrase"));
67	else
68	SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Enter Passphrase"));
69	SetDlgItemText (dlg, IDC_PASSWD_HIDE, _("&Hide Typing"));
70	SetFocus (GetDlgItem (dlg, IDC_PASSWD_PWD ));
71	center_window2 (dlg, NULL, HWND_TOPMOST);
72	center_window (dlg, NULL);
73	SetForegroundWindow (dlg);
74	return FALSE;
75
76	case WM_COMMAND:
77	if (HIWORD (wparam) == BN_CLICKED &&
78	LOWORD (wparam) == IDC_PASSWD_HIDE) {
79	HWND hwnd = GetDlgItem (dlg, IDC_PASSWD_PWD);
80	int hide = IsDlgButtonChecked (dlg, IDC_PASSWD_HIDE);
81	SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0);
82	SetFocus (hwnd);
83	}
84
85	switch (LOWORD (wparam)) {
86	case IDOK:
87	pwd->cancel = 0;
88	nbytes = GetDlgItemText( dlg, IDC_PASSWD_PWD, pwd->pwd, DIM (pwd->pwd)-1);
89	if (!nbytes)
90	strcpy (pwd->pwd, "");
91	else if (pwd->strict && check_passwd_quality (pwd->pwd, 0)) {
92	int id = msg_box (dlg, _("Your passphrase should be at least 8 characters"
93	" long\nand should contain non-alphabetic characters."
94	"\n\nStill proceed?"),
95	_("Key Generation"), MB_ICONWARNING\|MB_YESNO);
96	if (id == IDNO)
97	return TRUE;
98	}
99	SetDlgItemText (dlg, IDC_PASSWD_PWD, "");
100	EndDialog (dlg, TRUE);
101	return TRUE;
102
103	case IDCANCEL:
104	pwd->cancel = 1;
105	EndDialog (dlg, FALSE);
106	return TRUE;
107	}
108	break;
109	}
110
111	return FALSE;
112	}
113
114
115	/* Request a passphrase from the user. @title is the title of the
116	dialog and @ret_cancel is true if user cancelled the operation.
117	Return value: the passphrase or NUL for an error. */
118	char*
119	request_passphrase (const char title, int flags, int ret_cancel)
120	{
121	passphrase_s pass;
122	char *p;
123
124	memset (&pass, 0, sizeof (pass));
125	if (title && *title) {
126	pass.title = m_strdup (title);
127	if (!pass.title)
128	BUG (0);
129	}
130	pass.repeat = flags & PASSDLG_INIT? 0 : 1;
131	pass.strict = flags & PASSDLG_STRICT? 1 : 0;
132	DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_PASSWD, glob_hwnd,
133	passwd_dlg_proc, (LPARAM)&pass);
134	if (pass.cancel == 1) {
135	*ret_cancel = 1;
136	return NULL;
137	}
138	p = m_strdup (pass.pwd);
139	if (!p)
140	BUG (0);
141	free_if_alloc (pass.title);
142	memset (&pass, 0, sizeof (pass));
143	return p;
144	}
145
146
147	/* Request a passphrase from the user but also confirm the passphrase
148	to make sure there is no typo. Arguments same as in the normal version
149	of the function. */
150	char*
151	request_passphrase2 (const char title, int flags, int ret_cancel)
152	{
153	char pass1, pass2;
154	int equal = 0, cancel = 0;
155
156	*ret_cancel = 1;
157	while (!equal) {
158	pass1 = request_passphrase (title, PASSDLG_INIT\|flags, &cancel);
159	if (cancel)
160	return NULL;
161	pass2 = request_passphrase (title, PASSDLG_REPEAT, &cancel);
162	if (cancel) {
163	sfree_if_alloc (pass1);
164	return NULL;
165	}
166
167	if (strcmp (pass1, pass2)) {
168	msg_box (NULL, _("Passphrases do not match. Please try again."),
169	title, MB_INFO);
170	sfree_if_alloc (pass1);
171	sfree_if_alloc (pass2);
172	}
173	else {
174	if (is_8bit_string (pass1)) {
175	msg_box (NULL, _("The passphrase contains 8-bit characters.\n"
176	"It is not suggested to use charset specific characters."),
177	title, MB_ERR);
178	equal = 0;
179	sfree_if_alloc (pass1);
180	sfree_if_alloc (pass2);
181	}
182	else
183	equal = 1;
184	}
185	}
186	sfree_if_alloc (pass2);
187	*ret_cancel = 0;
188	return pass1;
189	}