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!");
        SetWindowText (dlg, _("Passphrase Dialog"));
        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"));
        SetDlgItemText (dlg, IDCANCEL, _("&Cancel"));
        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	werner	36	/* 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	werner	47	#include "resource.h"
27	werner	36	#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			SetWindowText (dlg, _("Passphrase Dialog"));
60			CheckDlgButton (dlg, IDC_PASSWD_HIDE, BST_CHECKED);
61			if (pwd->title)
62			SetWindowText (dlg, pwd->title);
63			if (pwd->repeat)
64			SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Repeat Passphrase"));
65			else
66			SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Enter Passphrase"));
67	twoaday	78	SetDlgItemText (dlg, IDC_PASSWD_HIDE, _("&Hide Typing"));
68	twoaday	101	SetDlgItemText (dlg, IDCANCEL, _("&Cancel"));
69	werner	36	SetFocus (GetDlgItem (dlg, IDC_PASSWD_PWD ));
70			center_window2 (dlg, NULL, HWND_TOPMOST);
71			center_window (dlg, NULL);
72			SetForegroundWindow (dlg);
73			return FALSE;
74
75			case WM_COMMAND:
76			if (HIWORD (wparam) == BN_CLICKED &&
77			LOWORD (wparam) == IDC_PASSWD_HIDE) {
78			HWND hwnd = GetDlgItem (dlg, IDC_PASSWD_PWD);
79			int hide = IsDlgButtonChecked (dlg, IDC_PASSWD_HIDE);
80			SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0);
81			SetFocus (hwnd);
82			}
83
84			switch (LOWORD (wparam)) {
85			case IDOK:
86			pwd->cancel = 0;
87	twoaday	130	nbytes = GetDlgItemText (dlg, IDC_PASSWD_PWD, pwd->pwd, DIM (pwd->pwd)-1);
88	werner	36	if (!nbytes)
89			strcpy (pwd->pwd, "");
90			else if (pwd->strict && check_passwd_quality (pwd->pwd, 0)) {
91			int id = msg_box (dlg, _("Your passphrase should be at least 8 characters"
92			" long\nand should contain non-alphabetic characters."
93			"\n\nStill proceed?"),
94			_("Key Generation"), MB_ICONWARNING\|MB_YESNO);
95			if (id == IDNO)
96			return TRUE;
97			}
98			SetDlgItemText (dlg, IDC_PASSWD_PWD, "");
99			EndDialog (dlg, TRUE);
100			return TRUE;
101
102			case IDCANCEL:
103			pwd->cancel = 1;
104			EndDialog (dlg, FALSE);
105			return TRUE;
106			}
107			break;
108			}
109
110			return FALSE;
111			}
112
113
114			/* Request a passphrase from the user. @title is the title of the
115			dialog and @ret_cancel is true if user cancelled the operation.
116			Return value: the passphrase or NUL for an error. */
117			char*
118			request_passphrase (const char title, int flags, int ret_cancel)
119			{
120			passphrase_s pass;
121			char *p;
122
123			memset (&pass, 0, sizeof (pass));
124			if (title && *title) {
125			pass.title = m_strdup (title);
126			if (!pass.title)
127			BUG (0);
128			}
129			pass.repeat = flags & PASSDLG_INIT? 0 : 1;
130			pass.strict = flags & PASSDLG_STRICT? 1 : 0;
131			DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_PASSWD, glob_hwnd,
132			passwd_dlg_proc, (LPARAM)&pass);
133			if (pass.cancel == 1) {
134			*ret_cancel = 1;
135			return NULL;
136			}
137			p = m_strdup (pass.pwd);
138			if (!p)
139			BUG (0);
140			free_if_alloc (pass.title);
141			memset (&pass, 0, sizeof (pass));
142			return p;
143			}
144
145
146			/* Request a passphrase from the user but also confirm the passphrase
147			to make sure there is no typo. Arguments same as in the normal version
148			of the function. */
149			char*
150			request_passphrase2 (const char title, int flags, int ret_cancel)
151			{
152			char pass1, pass2;
153			int equal = 0, cancel = 0;
154
155			*ret_cancel = 1;
156			while (!equal) {
157			pass1 = request_passphrase (title, PASSDLG_INIT\|flags, &cancel);
158			if (cancel)
159			return NULL;
160			pass2 = request_passphrase (title, PASSDLG_REPEAT, &cancel);
161			if (cancel) {
162			sfree_if_alloc (pass1);
163			return NULL;
164			}
165
166			if (strcmp (pass1, pass2)) {
167			msg_box (NULL, _("Passphrases do not match. Please try again."),
168			title, MB_INFO);
169			sfree_if_alloc (pass1);
170			sfree_if_alloc (pass2);
171			}
172			else {
173			if (is_8bit_string (pass1)) {
174			msg_box (NULL, _("The passphrase contains 8-bit characters.\n"
175			"It is not suggested to use charset specific characters."),
176			title, MB_ERR);
177			equal = 0;
178			sfree_if_alloc (pass1);
179			sfree_if_alloc (pass2);
180			}
181			else
182			equal = 1;
183			}
184			}
185			sfree_if_alloc (pass2);
186			*ret_cancel = 0;
187			return pass1;
188			}