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/* wptPassphraseDlg.cpp - Dialog to get the passphrase |
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* Copyright (C) 2001-2006, 2009 Timo Schulz |
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* |
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* This file is part of WinPT. |
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* |
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* WinPT is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* WinPT is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
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#include <windows.h> |
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|
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#include "resource.h" |
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#include "wptGPG.h" |
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#include "wptCommonCtl.h" |
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#include "wptContext.h" |
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#include "wptDlgs.h" |
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#include "wptNLS.h" |
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#include "wptW32API.h" |
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#include "wptUTF8.h" |
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#include "wptVersion.h" |
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#include "wptTypes.h" |
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#include "wptRegistry.h" |
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#include "wptErrors.h" |
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#include "StringBuffer.h" |
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|
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|
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struct passphrase_s { |
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char *title; /* Title of the dialog. */ |
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// FIXME: do not use static buffer |
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char pwd[2048]; /* The actual passphrase. */ |
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int strict; /* Do a simple check how good the passphrase is. */ |
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int repeat; /* Indicate last try was wrong. */ |
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int cancel; /* 1 if user cancelled operation. */ |
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int warn_utf8; |
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int not_empty; |
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gpgme_key_t key; |
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}; |
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|
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|
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const char* get_keyinfo (gpgme_key_t key); |
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|
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static subclass_s passwd_edit_proc; |
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|
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/* We sub-class the passphrase edit control to monitor |
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the structure of the passphrase. This output is used |
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as a quality INDICATOR(!). */ |
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static BOOL CALLBACK |
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edit_subclass_proc (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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HWND dlg = passwd_edit_proc.dlg; |
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switch (msg) { |
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case WM_CHAR: |
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int n, pos = 0; |
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n = GetWindowTextLength (GetDlgItem (dlg, IDC_PASSWD_PWD)); |
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if (n > 0) |
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pos = n*6; |
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if (pos > 100) |
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pos = 100; |
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SendDlgItemMessage (dlg, IDC_PASSWD_QOP, PBM_SETPOS, (WPARAM)pos, 0); |
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break; |
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} |
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|
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return CallWindowProc (passwd_edit_proc.old, hwnd, msg, wparam, lparam); |
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} |
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|
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|
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/* Fill in the key information in the combo box, |
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according to the key in @key. */ |
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static void |
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set_passphrase_hint (HWND dlg, gpgme_key_t key) |
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{ |
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StringBuffer p; |
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char *uid; |
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|
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uid = utf8_to_native (key->uids->name); |
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p = p + uid + " (" + get_keyinfo (key) + ")"; |
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|
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SendDlgItemMessage (dlg, IDC_PASSWD_KEYINF, |
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CB_ADDSTRING, 0, (LPARAM)(char *)p.getBuffer ()); |
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SendDlgItemMessage (dlg, IDC_PASSWD_KEYINF, CB_SETCURSEL, 0, 0); |
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EnableWindow (GetDlgItem (dlg, IDC_PASSWD_KEYINF), FALSE); |
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free_if_alloc (uid); |
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} |
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|
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|
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/* Dialog procedure to request a passphrase from the user. */ |
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static BOOL CALLBACK |
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passwd_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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static passphrase_s *pwd; |
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int nbytes; |
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int cancel; |
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|
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switch (msg) { |
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case WM_INITDIALOG: |
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pwd = (passphrase_s *)lparam; |
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if (!pwd) |
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BUG (0); |
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SetWindowText (dlg, _("Passphrase Dialog")); |
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CheckDlgButton (dlg, IDC_PASSWD_HIDE, BST_CHECKED); |
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if (pwd->title) |
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SetWindowText (dlg, pwd->title); |
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if (pwd->repeat) |
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SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Repeat Passphrase")); |
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else |
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SetDlgItemText (dlg, IDC_PASSWD_INFO, _("Enter Passphrase")); |
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if (pwd->key) { |
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ShowWindow (GetDlgItem (dlg, IDC_PASSWD_QOPINF), SW_HIDE); |
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ShowWindow (GetDlgItem (dlg, IDC_PASSWD_QOP), SW_HIDE); |
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set_passphrase_hint (dlg, pwd->key); |
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} |
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else |
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ShowWindow (GetDlgItem (dlg, IDC_PASSWD_KEYINF), SW_HIDE); |
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SetDlgItemText (dlg, IDC_PASSWD_HIDE, _("&Hide Typing")); |
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SetDlgItemText (dlg, IDCANCEL, _("&Cancel")); |
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SetDlgItemText (dlg, IDOK, _("&OK")); |
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SetDlgItemText (dlg, IDC_PASSWD_QOPINF, _("Quality indicator:")); |
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|
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if (!pwd->key) { |
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HWND hwnd; |
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hwnd = GetDlgItem (dlg, IDC_PASSWD_PWD); |
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passwd_edit_proc.dlg = dlg; |
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passwd_edit_proc.current = (WNDPROC)edit_subclass_proc; |
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passwd_edit_proc.old = (WNDPROC)GetWindowLong(hwnd, GWL_WNDPROC); |
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if (passwd_edit_proc.old) { |
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if (!SetWindowLong (hwnd, GWL_WNDPROC, (LONG)passwd_edit_proc.current)) { |
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msg_box (dlg, "Could not set keylist window procedure.", |
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_("Key Manager"), MB_ERR); |
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BUG (NULL); |
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} |
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} |
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} |
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|
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SetFocus (GetDlgItem (dlg, IDC_PASSWD_PWD)); |
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center_window2 (dlg, NULL, HWND_TOPMOST); |
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center_window (dlg, NULL); |
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SetForegroundWindow (dlg); |
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return FALSE; |
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|
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case WM_ACTIVATE: |
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/* See comment in wptPassphraseCBDlg.cpp for more information. */ |
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if (!reg_prefs.no_safe_pwd_ctrl) |
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safe_edit_control_init (dlg, IDC_PASSWD_PWD); |
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break; |
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|
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case WM_DESTROY: |
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if (!reg_prefs.no_safe_pwd_ctrl) |
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safe_edit_control_free (dlg, IDC_PASSWD_PWD); |
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balloon_msg_disable (); |
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break; |
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|
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case WM_COMMAND: |
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if (HIWORD (wparam) == BN_CLICKED && |
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LOWORD (wparam) == IDC_PASSWD_HIDE) { |
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HWND hwnd = GetDlgItem (dlg, IDC_PASSWD_PWD); |
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int hide = IsDlgButtonChecked (dlg, IDC_PASSWD_HIDE); |
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|
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SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0); |
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SetFocus (hwnd); |
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} |
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|
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switch (LOWORD (wparam)) { |
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case IDOK: |
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pwd->cancel = 0; |
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nbytes = SafeGetDlgItemText (dlg, IDC_PASSWD_PWD, |
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pwd->pwd, DIM (pwd->pwd)-1); |
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if (!nbytes && pwd->not_empty) { |
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show_balloon_msg (GetDlgItem (dlg, IDC_PASSWD_PWD), |
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_("Please enter a passphrase."), IDI_ERROR); |
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return TRUE; |
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} |
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|
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if (!nbytes) |
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strcpy (pwd->pwd, ""); |
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else if (pwd->strict && check_passwd_quality (pwd->pwd, 0)) { |
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int id = msg_box (dlg, _("Your passphrase should be at least 8 characters" |
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" long\nand should contain non-alphabetic characters." |
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"\n\nContinue?"), |
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_("Key Generation"), MB_ICONWARNING|MB_YESNO); |
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if (id == IDNO) |
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return TRUE; |
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} |
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if (pwd->warn_utf8 && !pwd->repeat && |
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is_8bit_string (pwd->pwd)) { |
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cancel = msg_box (dlg, |
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_("The passphrase contains 8-bit characters.\n" |
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"Make sure that all systems you work on properly support UTF-8 handling.\n" |
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"Continue?"), |
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_("Key Generation"), MB_ICONWARNING|MB_YESNO); |
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if (cancel == IDNO) { |
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wipememory (pwd->pwd, sizeof (pwd->pwd)); |
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return TRUE; |
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} |
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} |
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SetDlgItemText (dlg, IDC_PASSWD_PWD, ""); |
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EndDialog (dlg, 1); |
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return TRUE; |
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|
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case IDCANCEL: |
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pwd->cancel = 1; |
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EndDialog (dlg, 0); |
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return TRUE; |
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} |
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break; |
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} |
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|
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return FALSE; |
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} |
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|
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|
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/* Same as request_passphrase(), but with an additional hint about the |
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key to unprotect. */ |
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char* |
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request_key_passphrase (gpgme_key_t key, const char *title, int *ret_cancel) |
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{ |
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passphrase_s pass; |
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char *p; |
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|
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*ret_cancel = 0; |
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memset (&pass, 0, sizeof (pass)); |
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pass.key = key; |
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pass.title = title? m_strdup (title) : NULL; |
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|
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DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_PASSWD, glob_hwnd, |
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passwd_dlg_proc, (LPARAM)&pass); |
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free_if_alloc (pass.title); |
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if (pass.cancel == 1) { |
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*ret_cancel = 1; |
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return NULL; |
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} |
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if (emulate_utf8_bug) |
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p = native_to_utf8 (pass.pwd); |
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else |
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p = m_strdup (pass.pwd); |
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wipememory (pass.pwd, sizeof (pass.pwd)); |
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return p; |
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} |
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|
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|
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/* Request a passphrase from the user. @title is the title of the |
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dialog and @ret_cancel is true if user cancelled the operation. |
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Return value: the passphrase or NUL for an error. */ |
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char* |
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request_passphrase (const char *title, int flags, int *ret_cancel) |
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{ |
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passphrase_s pass; |
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char *p; |
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|
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*ret_cancel = 0; /* reset */ |
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memset (&pass, 0, sizeof (pass)); |
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if (title && *title) |
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pass.title = m_strdup (title); |
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pass.repeat = flags & PASSDLG_INIT? 0 : 1; |
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pass.strict = flags & PASSDLG_STRICT? 1 : 0; |
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pass.not_empty = flags & PASSDLG_NOTEMPTY? 1: 0; |
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pass.warn_utf8 = flags & PASSDLG_WARN_UTF8? 1 : 0; |
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DialogBoxParam (glob_hinst, (LPCTSTR)IDD_WINPT_PASSWD, glob_hwnd, |
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passwd_dlg_proc, (LPARAM)&pass); |
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free_if_alloc (pass.title); |
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if (pass.cancel == 1) { |
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*ret_cancel = 1; |
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return NULL; |
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} |
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if (emulate_utf8_bug) |
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p = native_to_utf8 (pass.pwd); |
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else |
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p = m_strdup (pass.pwd); |
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wipememory (pass.pwd, sizeof (pass.pwd)); |
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return p; |
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} |
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|
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|
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/* Request a passphrase from the user but also confirm the passphrase |
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to make sure there is no typo. Arguments same as in the normal version |
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of the function. */ |
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char* |
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request_passphrase2 (const char *title, int flags, int *ret_cancel) |
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{ |
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char *pass1, *pass2; |
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int equal = 0, cancel = 0; |
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|
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*ret_cancel = 1; |
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while (!equal) { |
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pass1 = request_passphrase (title, PASSDLG_INIT|flags, &cancel); |
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if (cancel) |
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return NULL; |
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pass2 = request_passphrase (title, PASSDLG_REPEAT, &cancel); |
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if (cancel) { |
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sfree_if_alloc (pass1); |
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return NULL; |
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} |
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|
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if (strcmp (pass1, pass2)) { |
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msg_box (NULL, _("Passphrases do not match. Please try again."), |
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title, MB_INFO); |
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sfree_if_alloc (pass1); |
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sfree_if_alloc (pass2); |
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} |
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else |
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equal = 1; |
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} |
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sfree_if_alloc (pass2); |
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*ret_cancel = 0; |
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return pass1; |
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} |
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