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/* wptClipSignDlg.cpp - WinPT clipboard sign dialog |
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* Copyright (C) 2000-2006, 2009 Timo Schulz |
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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 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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|
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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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#include <commctrl.h> |
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|
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#include "resource.h" |
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#include "wptTypes.h" |
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#include "wptAgent.h" |
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#include "wptNLS.h" |
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#include "wptCrypto.h" |
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#include "wptGPG.h" |
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#include "wptCommonCtl.h" |
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#include "wptRegistry.h" |
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#include "wptKeylist.h" |
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#include "wptErrors.h" |
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#include "wptW32API.h" |
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#include "wptVersion.h" |
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#include "wptContext.h" /* for passphrase_s */ |
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|
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|
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/* Sign the clipboard contents with the key @keyid and wrap |
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text lines to @wraplen (0 disable line wrapping). |
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Return value: 0 on success. */ |
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gpgme_error_t |
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gpg_clip_sign (gpgme_ctx_t ctx, const char *keyid, int wraplen) |
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{ |
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gpgme_error_t err; |
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gpgme_data_t plain = NULL; |
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gpgme_data_t sig = NULL; |
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gpgme_key_t key = NULL; |
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|
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if (!keyid) |
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return gpg_error (GPG_ERR_INV_ARG); |
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|
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gpgme_set_armor (ctx, 1); |
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err = gpg_data_utf8_new_from_clipboard (&plain, wraplen, NULL); |
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if (err) |
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return err; |
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err = get_pubkey (keyid, &key); |
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if (err) |
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goto leave; |
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err = gpgme_signers_add (ctx, key); |
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if (err) |
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goto leave; |
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err = gpgme_data_new (&sig); |
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if (err) |
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goto leave; |
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err = gpgme_op_sign (ctx, plain, sig, GPGME_SIG_MODE_CLEAR); |
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if (err) |
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goto leave; |
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|
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gpg_data_release_to_clipboard (sig, 1); |
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sig = NULL; |
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|
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leave: |
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if (plain) |
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gpgme_data_release (plain); |
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if (sig) |
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gpgme_data_release (sig); |
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return err; |
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} |
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|
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|
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/* This function is used when only one secret key is available. |
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it doesn't make sense to offer a dialog for this case. */ |
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void |
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one_key_proc (HWND dlg) |
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{ |
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gpgme_ctx_t ctx; |
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gpgme_error_t err; |
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passphrase_cb_s pwd; |
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char *signer; |
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int n = reg_prefs.word_wrap; |
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|
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signer = get_gnupg_default_key (); |
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if (!signer) { |
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msg_box (dlg, _("Could not get default key."), _("Signing"), MB_ERR); |
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return; |
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} |
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|
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err = gpgme_new (&ctx); |
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if (err) |
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BUG (dlg); |
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|
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set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_SIGN, dlg, _("Signing")); |
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err = gpg_clip_sign (ctx, signer, n); |
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if (pwd.cancel) |
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goto leave; |
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|
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if (gpgme_err_code (err) == GPG_ERR_BAD_PASSPHRASE) |
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agent_del_cache (pwd.keyid); |
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if (err) |
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msg_box (dlg, gpgme_strerror (err), _("Signing"), MB_ERR); |
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else |
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show_msg (dlg, 1500, _("GnuPG Status: Finished")); |
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leave: |
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gpgme_release (ctx); |
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free_if_alloc (signer); |
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release_gpg_passphrase_cb (&pwd); |
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} |
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|
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|
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/* Count only useable secret keys. |
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Ignore expired, revoked and disabled keys. |
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Return value: amount of keys. */ |
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static DWORD |
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count_useable_seckeys (gpg_keycache_t kc) |
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{ |
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struct keycache_s *c; |
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DWORD n=0; |
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|
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for (c = kc->item; c; c=c->next) { |
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if (c->pubpart && key_is_useable (c->pubpart->key)) |
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n++; |
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} |
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return n; |
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} |
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|
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|
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static keylist_ctrl_t |
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on_init_dialog (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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keylist_ctrl_t kl; |
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gpg_keycache_t kc, sec_kc; |
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int nkeys; |
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|
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SetWindowText (dlg, _("Signing")); |
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kc = keycache_get_ctx (KEYCACHE_PUB); |
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sec_kc = keycache_get_ctx (KEYCACHE_PRV); |
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|
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nkeys = count_useable_seckeys (sec_kc); |
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if (nkeys < 1) { |
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msg_box (dlg, _("No useable signing key found"), _("Signing"), MB_ERR); |
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return NULL; |
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} |
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else if (nkeys == 1) { |
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one_key_proc (dlg); |
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return NULL; |
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} |
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kl = keylist_load (GetDlgItem (dlg, IDC_SIGN_KEYLIST), kc, sec_kc, |
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KEYLIST_SIGN, KEY_SORT_USERID); |
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center_window (dlg, NULL); |
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SetForegroundWindow (dlg); |
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return kl; |
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} |
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|
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|
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static const char* |
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lookup_key_userid (const char *patt) |
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{ |
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winpt_key_s key; |
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|
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memset (&key, 0, sizeof (key)); |
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if (winpt_get_pubkey (patt, &key)) |
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return patt; |
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return key.ext->uids->uid; |
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} |
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|
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|
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/* Dialog box procedure for clipboard signing. */ |
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BOOL CALLBACK |
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clip_sign_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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static keylist_ctrl_t kl = NULL; |
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gpgme_ctx_t ctx; |
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gpgme_error_t err; |
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passphrase_cb_s pwd; |
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int lv_idx = 0; |
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int rc = 0, sel_signer = 0; |
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char *signer = NULL; |
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|
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switch (msg) { |
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case WM_INITDIALOG: |
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kl = on_init_dialog (dlg, msg, wparam, lparam); |
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if (!kl) |
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EndDialog (dlg, TRUE); |
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return FALSE; |
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|
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case WM_DESTROY: |
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if (kl) { |
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keylist_delete (kl); |
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kl = NULL; |
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} |
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return FALSE; |
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|
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case WM_NOTIFY: |
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NMHDR *notify; |
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notify = (NMHDR *)lparam; |
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if (notify && notify->code == NM_DBLCLK |
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&& notify->idFrom == IDC_SIGN_KEYLIST) |
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PostMessage (dlg, WM_COMMAND, MAKEWPARAM (IDOK, 0), 0); |
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return TRUE; |
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|
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case WM_COMMAND: |
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switch (LOWORD (wparam)) { |
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case IDOK: |
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sel_signer = 1; |
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signer = get_gnupg_default_key (); |
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if (!signer) { |
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msg_box (dlg, _("Could not get default key."), |
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_("Signing"), MB_ERR); |
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return FALSE; |
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} |
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else if ((lv_idx = listview_get_selected_item (kl->lv)) == -1) { |
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rc = log_box (_("Signing"), MB_YESNO, |
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_("No key was chosen.\n" |
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"Use the GPG default key '%s'?"), |
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lookup_key_userid (signer)); |
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if (rc == IDNO) { |
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free_if_alloc (signer); |
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return FALSE; |
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} |
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sel_signer = 0; |
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} |
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if (sel_signer) { |
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free_if_alloc (signer); |
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signer = new char[32+1]; |
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if (!signer) |
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BUG (NULL); |
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listview_get_item_text (kl->lv, lv_idx, KM_COL_KEYID, signer, 32); |
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} |
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err = gpgme_new (&ctx); |
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if (err) |
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BUG (NULL); |
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set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_SIGN, dlg, _("Signing")); |
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err = gpg_clip_sign (ctx, signer, reg_prefs.word_wrap); |
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free_if_alloc (signer); |
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release_gpg_passphrase_cb (&pwd); |
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|
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if (pwd.cancel && gpgme_err_code (err) == GPG_ERR_BAD_PASSPHRASE) { |
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/* The user hit the cancel button or bad passphrase */ |
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gpgme_release (ctx); |
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return TRUE; |
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} |
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if (err) { |
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msg_box (dlg, gpgme_strerror (err), _("Signing"), MB_ERR); |
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gpgme_release (ctx); |
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return TRUE; |
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} |
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else |
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show_msg (dlg, 1500, _("GnuPG Status: Finished")); |
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gpgme_release (ctx); |
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EndDialog (dlg, TRUE); |
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return TRUE; |
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|
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case IDCANCEL: |
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EndDialog (dlg, FALSE); |
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return FALSE; |
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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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