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werner |
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/* wptPassphraseCB.cpp - GPGME Passphrase Callback |
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twoaday |
255 |
* Copyright (C) 2001, 2002-2006 Timo Schulz |
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werner |
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* Copyright (C) 2005 g10 Code GmbH |
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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 |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (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 GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with WinPT; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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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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#include <windows.h> |
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#include <ctype.h> |
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werner |
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#include "resource.h" |
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werner |
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#include "wptNLS.h" |
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#include "wptW32API.h" |
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#include "wptVersion.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 "wptErrors.h" |
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#include "wptTypes.h" |
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werner |
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#include "wptKeylist.h" |
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werner |
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#include "wptAgent.h" |
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#include "wptRegistry.h" |
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twoaday |
205 |
#include "wptUTF8.h" |
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werner |
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|
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twoaday |
255 |
/* Return the control ID dependent on the mode (sign or decrypt). */ |
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twoaday |
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#define item_ctrl_id(cmd) \ |
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werner |
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((cmd) == GPG_CMD_DECRYPT? IDC_DECRYPT_PWD : IDC_DECRYPT_SIGN_PWD) |
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#define item_ctrl_id2(cmd) \ |
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((cmd) == GPG_CMD_DECRYPT? IDC_DECRYPT_HIDE : IDC_DECRYPT_SIGN_HIDE) |
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twoaday |
255 |
const char* get_symkey_algo (int algo); |
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twoaday |
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void ListBox_AddString_utf8 (HWND lb, const char *txt); |
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twoaday |
255 |
|
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werner |
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/* Overwrite passphrase and free memory. */ |
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static void |
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burn_passphrase (char **pwd) |
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{ |
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char *pass = *pwd; |
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wipememory (pass, strlen (pass)); |
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delete []pass; |
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*pwd = NULL; |
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} |
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/* Dialog procedure for the passphrase callback. */ |
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static BOOL CALLBACK |
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passphrase_callback_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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twoaday |
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static passphrase_cb_s *c; |
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gpgme_decrypt_result_t res=NULL; |
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gpgme_sign_result_t res_sig=NULL; |
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twoaday |
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gpgme_recipient_t recip=NULL, r; |
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twoaday |
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winpt_key_s key; |
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twoaday |
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void *item; |
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werner |
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const char *id; |
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char *info; |
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int n; |
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switch (msg) { |
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twoaday |
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case WM_ACTIVATE: |
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safe_edit_control_init (dlg, item_ctrl_id (c->gpg_cmd)); |
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break; |
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case WM_DESTROY: |
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safe_edit_control_free (dlg, item_ctrl_id (c->gpg_cmd)); |
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break; |
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werner |
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case WM_INITDIALOG: |
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c = (passphrase_cb_s *)lparam; |
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if (!c) |
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BUG (0); |
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twoaday |
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SetDlgItemText (dlg, IDCANCEL, _("&Cancel")); |
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werner |
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SetWindowText (dlg, c->title); |
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if (c->gpg_cmd == GPG_CMD_DECRYPT) { |
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twoaday |
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SetDlgItemText (dlg, IDC_DECRYPT_HIDE, _("&Hide Typing")); |
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werner |
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SetDlgItemText (dlg, IDC_DECRYPT_LISTINF, |
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_("Encrypted with the following public key(s)")); |
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CheckDlgButton (dlg, IDC_DECRYPT_HIDE, BST_CHECKED); |
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} |
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twoaday |
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else if (c->gpg_cmd == GPG_CMD_SIGN) { |
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SetDlgItemText (dlg, IDC_DECRYPT_SIGN_HIDE, _("&Hide Typing")); |
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werner |
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CheckDlgButton (dlg, IDC_DECRYPT_SIGN_HIDE, BST_CHECKED); |
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twoaday |
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} |
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twoaday |
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/* Because it depends on the order the keys are stored in the |
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keyring whether res->recipients is complete or not, we also |
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support that the recipients were externally extracted and then |
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we use this list. */ |
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werner |
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if (c->recipients) |
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recip = c->recipients; /* recipients were already extracted. */ |
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else { |
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res = gpgme_op_decrypt_result (c->gpg); |
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if (res && res->recipients) |
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recip = res->recipients; |
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} |
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if (recip != NULL && c->gpg_cmd == GPG_CMD_DECRYPT) { |
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twoaday |
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for (r = recip; r; r = r->next) { |
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twoaday |
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memset (&key, 0, sizeof (key)); |
| 120 |
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if (!winpt_get_pubkey (r->keyid, &key)) { |
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gpgme_user_id_t u = key.ctx->uids; |
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twoaday |
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|
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id = u->name; |
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werner |
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if (!id) |
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id = _("Invalid User ID"); |
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twoaday |
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n = 32+strlen (id)+1+4+strlen (r->keyid)+1; |
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twoaday |
160 |
if (u->email) |
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n += strlen (u->email)+1; |
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info = new char [n+1]; |
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werner |
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if (!info) |
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BUG (NULL); |
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twoaday |
160 |
if (!u->email || strlen (u->email) < 1) |
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twoaday |
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sprintf (info, "%s (%s, 0x%s)", id, |
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twoaday |
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get_key_pubalgo (r->pubkey_algo), r->keyid+8); |
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else |
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twoaday |
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sprintf (info, "%s <%s> (%s, 0x%s)", id, u->email, |
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twoaday |
160 |
get_key_pubalgo (r->pubkey_algo), r->keyid+8); |
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werner |
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} |
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else { |
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info = new char [32 + strlen (r->keyid)+1 + 4]; |
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if (!info) |
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BUG (NULL); |
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sprintf (info, _("Unknown key ID (%s, 0x%s)"), |
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get_key_pubalgo (r->pubkey_algo), r->keyid+8); |
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} |
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twoaday |
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ListBox_AddString_utf8 (GetDlgItem (dlg, IDC_DECRYPT_LIST), info); |
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werner |
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free_if_alloc (info); |
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twoaday |
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winpt_release_pubkey (&key); |
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werner |
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} |
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} |
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else if (c->gpg_cmd == GPG_CMD_DECRYPT) |
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EnableWindow (GetDlgItem (dlg, IDC_DECRYPT_LIST), FALSE); |
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SetDlgItemText (dlg, c->gpg_cmd == GPG_CMD_DECRYPT? |
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IDC_DECRYPT_PWDINFO : IDC_DECRYPT_SIGN_PWDINFO, |
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c->bad_pwd? _("Bad passphrase; Enter passphrase again") : |
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_("Please enter your passphrase")); |
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if (c->gpg_cmd == GPG_CMD_DECRYPT) { |
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SetFocus (GetDlgItem (dlg, IDC_DECRYPT_PWD)); |
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if (res && !res->recipients) { |
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const char *s = _("Symmetric encryption.\n" |
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"%s encrypted data."); |
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const char *alg = get_symkey_algo (c->sym.sym_algo); |
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info = new char[strlen (s) + strlen (alg) + 2]; |
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if (!info) |
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BUG (NULL); |
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sprintf (info, s, alg); |
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SetDlgItemText (dlg, IDC_DECRYPT_MSG, info); |
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free_if_alloc (info); |
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} |
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else |
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twoaday |
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SetDlgItemText (dlg, IDC_DECRYPT_MSG, c->info); |
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werner |
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} |
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else { |
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twoaday |
204 |
SetFocus (GetDlgItem (dlg, IDC_DECRYPT_SIGN_PWD)); |
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twoaday |
205 |
SetDlgItemText (dlg, IDC_DECRYPT_SIGN_MSG, c->info); |
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werner |
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} |
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center_window (dlg, NULL); |
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SetForegroundWindow (dlg); |
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return FALSE; |
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case WM_SYSCOMMAND: |
| 182 |
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if (LOWORD (wparam) == SC_CLOSE) { |
| 183 |
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c->cancel = 1; |
| 184 |
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EndDialog (dlg, TRUE); |
| 185 |
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} |
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break; |
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case WM_COMMAND: |
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switch (HIWORD (wparam)) { |
| 190 |
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case BN_CLICKED: |
| 191 |
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if (LOWORD (wparam) == IDC_DECRYPT_HIDE |
| 192 |
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|| LOWORD (wparam) == IDC_DECRYPT_SIGN_HIDE) { |
| 193 |
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HWND hwnd; |
| 194 |
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int hide = IsDlgButtonChecked (dlg, item_ctrl_id2 (c->gpg_cmd)); |
| 195 |
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hwnd = GetDlgItem (dlg, item_ctrl_id (c->gpg_cmd)); |
| 196 |
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SendMessage (hwnd, EM_SETPASSWORDCHAR, hide? '*' : 0, 0); |
| 197 |
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SetFocus (hwnd); |
| 198 |
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} |
| 199 |
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} |
| 200 |
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| 201 |
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switch (LOWORD (wparam)) { |
| 202 |
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case IDOK: |
| 203 |
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/* XXX: the item is even cached when the passphrase is not |
| 204 |
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correct, which means that the user needs to delete all |
| 205 |
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cached entries to continue. */ |
| 206 |
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if (c->pwd) |
| 207 |
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burn_passphrase (&c->pwd); |
| 208 |
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n = item_get_text_length (dlg, item_ctrl_id (c->gpg_cmd)); |
| 209 |
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if (!n) { |
| 210 |
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c->pwd = new char[2]; |
| 211 |
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if (!c->pwd) |
| 212 |
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BUG (NULL); |
| 213 |
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strcpy (c->pwd, ""); |
| 214 |
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} |
| 215 |
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else { |
| 216 |
twoaday |
229 |
char *p = new char[n+2]; |
| 217 |
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if (!p) |
| 218 |
werner |
36 |
BUG (NULL); |
| 219 |
twoaday |
229 |
/* Get the passphrase and convert it utf8. |
| 220 |
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This does not just the us-ascii charset. */ |
| 221 |
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SafeGetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), p, n+1); |
| 222 |
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c->pwd = native_to_utf8 (p); |
| 223 |
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sfree_if_alloc (p); |
| 224 |
werner |
36 |
} |
| 225 |
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res = gpgme_op_decrypt_result (c->gpg); |
| 226 |
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if (!res) |
| 227 |
twoaday |
77 |
res_sig = gpgme_op_sign_result (c->gpg); |
| 228 |
twoaday |
255 |
if (!c->is_card && reg_prefs.cache_time > 0 && |
| 229 |
twoaday |
77 |
(res || res_sig)) { |
| 230 |
twoaday |
255 |
if (agent_get_cache (c->keyid, &item)) |
| 231 |
werner |
36 |
agent_unlock_cache_entry (&item); |
| 232 |
twoaday |
77 |
else |
| 233 |
werner |
36 |
agent_put_cache (c->keyid, c->pwd, reg_prefs.cache_time); |
| 234 |
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} |
| 235 |
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c->cancel = 0; |
| 236 |
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EndDialog (dlg, TRUE); |
| 237 |
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return TRUE; |
| 238 |
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| 239 |
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case IDCANCEL: |
| 240 |
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SetDlgItemText (dlg, item_ctrl_id (c->gpg_cmd), ""); |
| 241 |
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c->cancel = 1; |
| 242 |
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EndDialog (dlg, FALSE); |
| 243 |
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return FALSE; |
| 244 |
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} |
| 245 |
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break; |
| 246 |
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} |
| 247 |
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| 248 |
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return FALSE; |
| 249 |
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} |
| 250 |
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| 251 |
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| 252 |
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/* Extract the main keyid from @pass_info. |
| 253 |
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Return value: long main keyid or NULL for an error. */ |
| 254 |
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static const char* |
| 255 |
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parse_gpg_keyid (const char *pass_info) |
| 256 |
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{ |
| 257 |
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static char keyid[16+1]; |
| 258 |
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| 259 |
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/* XXX: check for leading alpha-chars? */ |
| 260 |
twoaday |
77 |
if (strlen (pass_info) < 16) { |
| 261 |
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log_debug ("parse_gpg_keyid: error '%s'\r\n", pass_info); |
| 262 |
werner |
36 |
return NULL; |
| 263 |
twoaday |
77 |
} |
| 264 |
werner |
36 |
/* the format of the desc buffer looks like this: |
| 265 |
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request_keyid[16] main_keyid[16] keytype[1] keylength[4] |
| 266 |
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we use the main keyid to use only one cache entry. */ |
| 267 |
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strncpy (keyid, pass_info+17, 16); |
| 268 |
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keyid[16] = 0; |
| 269 |
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return keyid; |
| 270 |
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} |
| 271 |
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| 272 |
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| 273 |
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/* Parse the information in @uid_hint and @pass_info to generate |
| 274 |
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a input message for the user in @desc. */ |
| 275 |
|
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static int |
| 276 |
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parse_gpg_description (const char *uid_hint, const char *pass_info, |
| 277 |
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char *desc, int size) |
| 278 |
|
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{ |
| 279 |
|
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gpgme_pubkey_algo_t algo; |
| 280 |
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char usedkey[16+1]; |
| 281 |
|
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char mainkey[16+1]; |
| 282 |
twoaday |
205 |
char *p, *uid; |
| 283 |
werner |
36 |
int n=0; |
| 284 |
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|
| 285 |
twoaday |
69 |
algo = (gpgme_pubkey_algo_t)0; |
| 286 |
werner |
36 |
/* Each uid_hint contains a long key-ID so it is at least 16 bytes. */ |
| 287 |
|
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if (strlen (uid_hint) < 17) { |
| 288 |
|
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*desc = 0; |
| 289 |
twoaday |
77 |
log_debug ("parse_gpg_description: error '%s'\r\n", uid_hint); |
| 290 |
werner |
36 |
return -1; |
| 291 |
|
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} |
| 292 |
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|
| 293 |
|
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while (p = strsep ((char**)&pass_info, " ")) { |
| 294 |
|
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switch (n++) { |
| 295 |
|
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case 0: strncpy (mainkey, p, 16); mainkey[16] = 0; break; |
| 296 |
|
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case 1: strncpy (usedkey, p, 16); usedkey[16] = 0; break; |
| 297 |
|
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case 2: algo = (gpgme_pubkey_algo_t)atol (p); break; |
| 298 |
|
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} |
| 299 |
|
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} |
| 300 |
|
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uid_hint += 16; /* skip keyid */ |
| 301 |
|
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uid_hint += 1; /* space */ |
| 302 |
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| 303 |
twoaday |
205 |
uid = utf8_to_native (uid_hint); |
| 304 |
werner |
36 |
if (strcmp (usedkey, mainkey)) |
| 305 |
|
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_snprintf (desc, size-1, |
| 306 |
twoaday |
255 |
_("You need a passphrase to unlock the secret key for user:\n" |
| 307 |
|
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"\"%s\"\n" |
| 308 |
|
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"%s key, ID 0x%s (main key ID 0x%s)\n"), |
| 309 |
twoaday |
205 |
uid, get_key_pubalgo (algo), usedkey+8, mainkey+8); |
| 310 |
werner |
36 |
else if (!strcmp (usedkey, mainkey)) |
| 311 |
|
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_snprintf (desc, size-1, |
| 312 |
twoaday |
255 |
_("You need a passphrase to unlock the secret key for user:\n" |
| 313 |
|
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"\"%s\"\n" |
| 314 |
|
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"%s key, ID 0x%s\n"), |
| 315 |
twoaday |
205 |
uid, get_key_pubalgo (algo), usedkey+8); |
| 316 |
|
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safe_free (uid); |
| 317 |
werner |
36 |
return 0; |
| 318 |
|
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} |
| 319 |
|
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|
| 320 |
|
|
|
| 321 |
|
|
/* Extract the serial number from the card ID @id and return it. */ |
| 322 |
|
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const char* |
| 323 |
|
|
extract_serial_no (const char *id) |
| 324 |
|
|
{ |
| 325 |
|
|
static char buf[8]; |
| 326 |
|
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char *p; |
| 327 |
|
|
|
| 328 |
|
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p = strchr (id, '/'); |
| 329 |
twoaday |
77 |
if (!p) { |
| 330 |
|
|
log_debug ("extract_serial_no: error '%s'\r\n", id); |
| 331 |
twoaday |
260 |
return ""; |
| 332 |
twoaday |
77 |
} |
| 333 |
twoaday |
260 |
memset (buf, 0, sizeof (buf)); |
| 334 |
werner |
36 |
strncpy (buf, id+(p-id)-6, 6); |
| 335 |
|
|
return buf; |
| 336 |
|
|
} |
| 337 |
|
|
|
| 338 |
|
|
|
| 339 |
|
|
/* Passphrase callback with the ability to support caching. */ |
| 340 |
|
|
gpgme_error_t |
| 341 |
|
|
passphrase_cb (void *hook, const char *uid_hint, |
| 342 |
|
|
const char *passphrase_info, |
| 343 |
|
|
int prev_was_bad, int fd) |
| 344 |
|
|
{ |
| 345 |
|
|
passphrase_cb_s *c = (passphrase_cb_s*)hook; |
| 346 |
|
|
HANDLE hd = (HANDLE)fd; |
| 347 |
|
|
void *item; |
| 348 |
twoaday |
69 |
const char *keyid=NULL, *pass; |
| 349 |
werner |
36 |
DWORD n; |
| 350 |
twoaday |
77 |
int rc = 0; |
| 351 |
werner |
36 |
|
| 352 |
twoaday |
77 |
if (!c) { |
| 353 |
|
|
log_debug ("passphrase_cb: error '!c'\r\n"); |
| 354 |
werner |
36 |
return gpg_error (GPG_ERR_INV_ARG); |
| 355 |
twoaday |
77 |
} |
| 356 |
werner |
36 |
c->bad_pwd = prev_was_bad? 1 : 0; |
| 357 |
|
|
if (prev_was_bad && !c->cancel) { |
| 358 |
|
|
if (c->pwd) |
| 359 |
|
|
burn_passphrase (&c->pwd); |
| 360 |
|
|
agent_del_cache (c->keyid); |
| 361 |
|
|
c->pwd_init = 1; |
| 362 |
|
|
} |
| 363 |
|
|
|
| 364 |
|
|
if (passphrase_info) { |
| 365 |
|
|
if (strlen (passphrase_info) < 16 && |
| 366 |
|
|
!strstr (passphrase_info, "OPENPGP")) { |
| 367 |
|
|
/* assume symetric encryption. */ |
| 368 |
twoaday |
69 |
int pos=2; |
| 369 |
werner |
36 |
c->sym.sym_algo = atoi (passphrase_info); |
| 370 |
|
|
if (c->sym.sym_algo > 9) |
| 371 |
twoaday |
69 |
pos++; |
| 372 |
werner |
36 |
/* XXX: be more strict. */ |
| 373 |
twoaday |
69 |
c->sym.s2k_mode = atoi (passphrase_info+pos); |
| 374 |
|
|
c->sym.s2k_hash = atoi (passphrase_info+pos+2); |
| 375 |
werner |
36 |
} |
| 376 |
|
|
|
| 377 |
|
|
keyid = parse_gpg_keyid (passphrase_info); |
| 378 |
twoaday |
77 |
pass = agent_get_cache (keyid+8, &item); |
| 379 |
werner |
36 |
if (pass) { |
| 380 |
|
|
agent_unlock_cache_entry (&item); |
| 381 |
|
|
c->pwd_init = 0; |
| 382 |
|
|
if (!WriteFile (hd, pass, strlen (pass), &n, NULL)) |
| 383 |
|
|
log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno); |
| 384 |
|
|
if (!WriteFile (hd, "\n", 1, &n, NULL)) |
| 385 |
|
|
log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno); |
| 386 |
|
|
return 0; |
| 387 |
|
|
} |
| 388 |
|
|
} |
| 389 |
|
|
|
| 390 |
|
|
if (c->pwd_init) { |
| 391 |
|
|
if (keyid && strlen (keyid) == 16) |
| 392 |
|
|
strcpy (c->keyid, keyid+8); |
| 393 |
|
|
|
| 394 |
|
|
/* if @passphrase_info contains 'OPENPGP' we assume a smart card |
| 395 |
|
|
has been used. */ |
| 396 |
|
|
if (strstr (passphrase_info, "OPENPGP")) { |
| 397 |
|
|
const char *s=passphrase_info; |
| 398 |
|
|
while (s && *s && *s != 'D') |
| 399 |
|
|
s++; |
| 400 |
|
|
_snprintf (c->info, sizeof c->info-1, |
| 401 |
|
|
_("Please enter the PIN to unlock your secret card key\n" |
| 402 |
|
|
"Card: %s"), extract_serial_no (s)); |
| 403 |
|
|
c->is_card = 1; |
| 404 |
|
|
} |
| 405 |
|
|
else if (uid_hint) |
| 406 |
|
|
parse_gpg_description (uid_hint, passphrase_info, |
| 407 |
twoaday |
181 |
c->info, sizeof (c->info) - 1); |
| 408 |
werner |
36 |
if (c->gpg_cmd == GPG_CMD_DECRYPT) { |
| 409 |
|
|
rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_DECRYPT, |
| 410 |
|
|
(HWND)c->hwnd, passphrase_callback_proc, |
| 411 |
|
|
(LPARAM)c); |
| 412 |
|
|
} |
| 413 |
|
|
else if (c->gpg_cmd == GPG_CMD_SIGN) { |
| 414 |
|
|
rc = DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_DECRYPT_SIGN, |
| 415 |
|
|
(HWND)c->hwnd, passphrase_callback_proc, |
| 416 |
|
|
(LPARAM)c); |
| 417 |
|
|
} |
| 418 |
|
|
if (rc == -1) { |
| 419 |
|
|
if (!WriteFile (hd, "\n", 1, &n, NULL)) |
| 420 |
|
|
log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno); |
| 421 |
|
|
return 0; |
| 422 |
|
|
} |
| 423 |
|
|
c->pwd_init = 0; |
| 424 |
|
|
} |
| 425 |
twoaday |
214 |
if (c->cancel || !c->pwd) { |
| 426 |
werner |
36 |
if (!WriteFile (hd, "\n", 1, &n, NULL)) |
| 427 |
|
|
log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno); |
| 428 |
|
|
return 0; |
| 429 |
|
|
} |
| 430 |
|
|
|
| 431 |
twoaday |
77 |
if (!WriteFile (hd, c->pwd, strlen (c->pwd), &n, NULL)) |
| 432 |
|
|
log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno); |
| 433 |
|
|
if (!WriteFile (hd, "\n", 1, &n, NULL)) |
| 434 |
|
|
log_debug ("passphrase_cb: WriteFile() failed ec=%d\n", w32_errno); |
| 435 |
werner |
36 |
return 0; |
| 436 |
|
|
} |
| 437 |
|
|
|
| 438 |
|
|
|
| 439 |
|
|
/* Initialize the given passphrase callback @cb with the |
| 440 |
|
|
used gpgme context @ctx, the command @cmd and a title |
| 441 |
|
|
@title for the dialog. */ |
| 442 |
|
|
void |
| 443 |
|
|
set_gpg_passphrase_cb (passphrase_cb_s *cb, gpgme_ctx_t ctx, |
| 444 |
|
|
int cmd, HWND hwnd, const char *title) |
| 445 |
|
|
{ |
| 446 |
|
|
memset (cb, 0, sizeof *cb); |
| 447 |
|
|
cb->gpg_cmd = cmd; |
| 448 |
|
|
cb->bad_pwd = 0; |
| 449 |
|
|
cb->is_card = 0; |
| 450 |
|
|
cb->cancel = 0; |
| 451 |
|
|
cb->hwnd = hwnd; |
| 452 |
|
|
cb->pwd_init = 1; |
| 453 |
|
|
free_if_alloc (cb->title); |
| 454 |
|
|
cb->title = m_strdup (title); |
| 455 |
|
|
gpgme_set_passphrase_cb (ctx, passphrase_cb, cb); |
| 456 |
|
|
cb->gpg = ctx; |
| 457 |
|
|
} |
| 458 |
|
|
|
| 459 |
|
|
|
| 460 |
twoaday |
214 |
/* Release the gpg recipient list. */ |
| 461 |
werner |
36 |
void |
| 462 |
twoaday |
214 |
release_gpg_recipients (gpgme_recipient_t *recipients) |
| 463 |
werner |
36 |
{ |
| 464 |
|
|
gpgme_recipient_t r, n; |
| 465 |
|
|
|
| 466 |
twoaday |
214 |
r = *recipients; |
| 467 |
|
|
while (r != NULL) { |
| 468 |
werner |
36 |
n = r->next; |
| 469 |
|
|
safe_free (r->keyid); |
| 470 |
|
|
safe_free (r); |
| 471 |
|
|
r = n; |
| 472 |
|
|
} |
| 473 |
twoaday |
214 |
*recipients = NULL; |
| 474 |
werner |
36 |
} |
| 475 |
|
|
|
| 476 |
|
|
|
| 477 |
twoaday |
214 |
|
| 478 |
|
|
/* Release a passphrase callback @ctx. */ |
| 479 |
|
|
void |
| 480 |
|
|
release_gpg_passphrase_cb (passphrase_cb_s *ctx) |
| 481 |
|
|
{ |
| 482 |
|
|
if (!ctx) |
| 483 |
|
|
return; |
| 484 |
|
|
sfree_if_alloc (ctx->pwd); |
| 485 |
|
|
free_if_alloc (ctx->title); |
| 486 |
|
|
release_gpg_recipients (&ctx->recipients); |
| 487 |
|
|
} |
| 488 |
|
|
|
| 489 |
|
|
|
| 490 |
werner |
36 |
/* Simple check to measure passphrase (@pass) quality. |
| 491 |
|
|
Return value: 0 on success. */ |
| 492 |
|
|
int |
| 493 |
|
|
check_passwd_quality (const char *pass, int strict) |
| 494 |
|
|
{ |
| 495 |
|
|
int i, nd=0, nc=0, n; |
| 496 |
|
|
|
| 497 |
|
|
n = strlen (pass); |
| 498 |
|
|
if (n < 8) |
| 499 |
|
|
return -1; |
| 500 |
|
|
|
| 501 |
|
|
for (i=0; i < n; i++) { |
| 502 |
|
|
if (isdigit (pass[i])) |
| 503 |
|
|
nd++; |
| 504 |
|
|
if (isalpha (pass[i])) |
| 505 |
|
|
nc++; |
| 506 |
|
|
} |
| 507 |
|
|
|
| 508 |
|
|
/* check that the passphrase contains letters and numbers. */ |
| 509 |
|
|
if (nd == n || nc == n) |
| 510 |
|
|
return -1; |
| 511 |
|
|
|
| 512 |
|
|
return 0; |
| 513 |
|
|
} |
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| 
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