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/* wptClipDecryptDlg.cpp - Clipboard decrypt dialog |
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* Copyright (C) 2000-2005 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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* 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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|
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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 "wptTypes.h" |
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#include "wptW32API.h" |
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#include "wptAgent.h" |
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#include "wptNLS.h" |
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#include "wptGPG.h" |
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#include "wptVersion.h" |
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#include "wptErrors.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 "wptKeylist.h" |
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#include "wptFileManager.h" |
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#include "wptCrypto.h" |
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#include "resource.h" |
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|
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bool secret_key_available (gpgme_recipient_t rset); |
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|
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/* Return the primary user-ID of the key with the keyid @keyid. |
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Caller must free string. */ |
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char* |
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get_key_userid (const char *keyid) |
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{ |
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gpgme_key_t key; |
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const char *s; |
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char *p; |
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|
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if (get_pubkey (keyid, &key)) |
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return m_strdup (_("user ID not found")); |
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s = key->uids->uid; |
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if (!s) |
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s = _("user ID not found"); |
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p = new char[strlen (s) + 4 + 8]; |
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if (!p) |
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BUG (NULL); |
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sprintf (p, "\n \"%s\"", s); |
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return p; |
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} |
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|
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|
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/* Decrypt the clipboard contents and on success |
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replace the data with the plaintext. |
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Return value: 0 on success. */ |
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gpgme_error_t |
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gpgme_op_clip_decrypt (gpgme_ctx_t ctx) |
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{ |
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gpgme_error_t err; |
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gpgme_data_t ciph = NULL; |
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gpgme_data_t plain = NULL; |
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|
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err = gpg_data_new_from_clipboard (&ciph, 0); |
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if (err) |
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return err; |
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|
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err = gpgme_data_new (&plain); |
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if (err) { |
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gpgme_data_release (ciph); |
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return err; |
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} |
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|
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err = gpgme_op_decrypt_verify (ctx, ciph, plain); |
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|
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gpg_data_release_and_set_clipboard (plain, 0); |
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gpgme_data_release (ciph); |
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return err; |
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} |
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|
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|
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/* Convenient function to provide clipboard decryption. |
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@hwnd is the parent window used for showing messsages. |
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Return value: 0 on success. */ |
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gpgme_error_t |
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clip_decrypt_dlg (HWND hwnd) |
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{ |
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gpgme_error_t err; |
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gpgme_ctx_t ctx = NULL; |
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gpgme_signature_t sig = NULL; |
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gpgme_decrypt_result_t res; |
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gpgme_verify_result_t sigres; |
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passphrase_cb_s pwd; |
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const char *s; |
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int novalid = 0; |
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|
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/* allow to verify data generated by 'gpg -a --sign foo' */ |
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if (fm_assume_onepass_sig (NULL) == 0) { |
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/* XXX: addtitional steps needed? */ |
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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 (NULL); |
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set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_DECRYPT, hwnd, _("Decryption")); |
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err = gpgme_op_clip_decrypt (ctx); |
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if (pwd.cancel) |
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goto leave; |
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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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|
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res = gpgme_op_decrypt_result (ctx); |
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if (err && res->recipients && !secret_key_available (res->recipients)) { |
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gpgme_recipient_t r = res->recipients; |
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char *p = get_key_userid (r->keyid+8); |
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|
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log_box (_("Decryption"), MB_ERR, |
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_("Encrypted with %s key, ID %s.%s\n" |
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"Decryption failed: secret key not available."), |
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get_key_pubalgo (r->pubkey_algo), r->keyid+8, p); |
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free_if_alloc (p); |
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goto leave; |
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} |
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else if (res->unsupported_algorithm) { |
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log_box (_("Decryption"), MB_ERR, _("Unsupported algorithm: %s"), |
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res->unsupported_algorithm); |
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} |
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else if (err) { |
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int pgp_type; |
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gpg_clip_get_pgptype (&pgp_type); |
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if (gpgme_err_code (err) == GPG_ERR_NO_DATA |
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&& (pgp_type & PGP_MESSAGE)) |
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msg_box (hwnd, _("Broken OpenPGP message (maybe: quoted printable " |
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"character in armor)."), |
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_("Decryption"), MB_INFO); |
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else |
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msg_box (hwnd, gpgme_strerror (err), _("Decryption"), MB_ERR); |
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goto leave; |
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} |
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|
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/* Too paranoid?? |
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if (flags & GPGME_OPFLAG_BADMDC) { |
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const char *s; |
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s = _("WARNING: encrypted message has been manipulated!\n" |
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"\n" |
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"Do *NOT* trust any text or data output from this file!\n" |
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"It is likely, the data was corrupted during the transport\n" |
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"but it might be also possible that this is part of an attack."); |
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msg_box (hwnd, s, _("*** IMPORTANT ***"), MB_INFO); |
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}*/ |
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|
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|
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show_msg (GetDesktopWindow (), 1500, _("GnuPG Status: Finished")); |
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|
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sigres = gpgme_op_verify_result (ctx); |
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if (sigres && sigres->signatures) { |
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gpgme_key_t key=NULL; |
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const char *keyid; |
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const char *uid; |
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|
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sig = sigres->signatures; |
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if (!sig->fpr) |
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BUG (NULL); |
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keyid = strlen (sig->fpr) == 40? sig->fpr+24 : sig->fpr+16; |
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|
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get_pubkey (keyid, &key); |
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if (key) { |
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if (key->owner_trust == GPGME_VALIDITY_FULL || |
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key->owner_trust == GPGME_VALIDITY_ULTIMATE) |
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s = _("Signature Status: Created with a fully trusted key"); |
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else if (key->owner_trust == GPGME_VALIDITY_MARGINAL) |
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s = _("Signature Status: Created with a marginal trusted key"); |
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else if (key->owner_trust == GPGME_VALIDITY_NEVER) { |
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novalid = 1; |
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s = _("Signature Status: Created with an UNTRUSTED key"); |
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} |
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else |
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s = _("Signature Status: Created with an undefined trusted key"); |
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} |
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else |
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s = ""; |
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|
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if (key) |
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uid = key->uids->uid; |
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else |
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uid = _("user ID not found"); |
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log_box (_("WinPT Verify"), MB_OK, |
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_("%s\n" |
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"%s\n" |
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"Signature made %s\n" |
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"From \"%s\" using key ID 0x%s" |
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"%s %s"), |
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s, get_gpg_sigstat (sig->summary), |
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strtimestamp (sig->timestamp), |
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uid, keyid+8, |
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novalid? "\nPrimary key fingerprint: " : "", |
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novalid? get_key_fpr (key) : ""); |
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} |
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|
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leave: |
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release_gpg_passphrase_cb (&pwd); |
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gpgme_release (ctx); |
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return err; |
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} |
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