| 1 |
/* wptClipDecryptDlg.cpp - Clipboard decrypt dialog |
| 2 |
* Copyright (C) 2000-2005 Timo Schulz |
| 3 |
* Copyright (C) 2005 g10 Code GmbH |
| 4 |
* |
| 5 |
* This file is part of WinPT. |
| 6 |
* |
| 7 |
* WinPT is free software; you can redistribute it and/or modify |
| 8 |
* it under the terms of the GNU General Public License as published by |
| 9 |
* the Free Software Foundation; either version 2 of the License, or |
| 10 |
* (at your option) any later version. |
| 11 |
* |
| 12 |
* WinPT is distributed in the hope that it will be useful, |
| 13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
* GNU General Public License for more details. |
| 16 |
* |
| 17 |
* You should have received a copy of the GNU General Public License |
| 18 |
* along with WinPT; if not, write to the Free Software Foundation, |
| 19 |
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
| 20 |
*/ |
| 21 |
|
| 22 |
#ifdef HAVE_CONFIG_H |
| 23 |
#include <config.h> |
| 24 |
#endif |
| 25 |
|
| 26 |
#include <windows.h> |
| 27 |
|
| 28 |
#include "wptTypes.h" |
| 29 |
#include "wptW32API.h" |
| 30 |
#include "wptAgent.h" |
| 31 |
#include "wptNLS.h" |
| 32 |
#include "wptGPG.h" |
| 33 |
#include "wptVersion.h" |
| 34 |
#include "wptErrors.h" |
| 35 |
#include "wptCommonCtl.h" |
| 36 |
#include "wptContext.h" |
| 37 |
#include "wptDlgs.h" |
| 38 |
#include "wptKeylist.h" |
| 39 |
#include "wptUTF8.h" |
| 40 |
#include "resource.h" |
| 41 |
|
| 42 |
bool secret_key_available (gpgme_recipient_t rset); |
| 43 |
|
| 44 |
/* Return the primary user-ID of the key with the keyid @keyid. |
| 45 |
Caller must free string. */ |
| 46 |
char* |
| 47 |
get_key_userid (const char *keyid) |
| 48 |
{ |
| 49 |
winpt_key_s key; |
| 50 |
char *uid; |
| 51 |
|
| 52 |
memset (&key, 0, sizeof (key)); |
| 53 |
if (winpt_get_pubkey (keyid, &key)) |
| 54 |
return m_strdup (_("user ID not found")); |
| 55 |
uid = new char[strlen (key.ext->uids->uid) + 4 + 8]; |
| 56 |
if (!uid) |
| 57 |
BUG (NULL); |
| 58 |
sprintf (uid, "\n \"%s\"", key.ext->uids->uid); |
| 59 |
return uid; |
| 60 |
} |
| 61 |
|
| 62 |
|
| 63 |
/* Decrypt the clipboard contents and on success |
| 64 |
replace the data with the plaintext. |
| 65 |
Return value: 0 on success. */ |
| 66 |
gpgme_error_t |
| 67 |
gpgme_op_clip_decrypt (gpgme_ctx_t ctx) |
| 68 |
{ |
| 69 |
gpgme_error_t err; |
| 70 |
gpgme_data_t ciph = NULL; |
| 71 |
gpgme_data_t plain = NULL; |
| 72 |
|
| 73 |
err = gpg_data_new_from_clipboard (&ciph, 0); |
| 74 |
if (err) |
| 75 |
return err; |
| 76 |
|
| 77 |
err = gpgme_data_new (&plain); |
| 78 |
if (err) { |
| 79 |
gpgme_data_release (ciph); |
| 80 |
return err; |
| 81 |
} |
| 82 |
|
| 83 |
err = gpgme_op_decrypt_verify (ctx, ciph, plain); |
| 84 |
|
| 85 |
gpg_data_release_and_set_clipboard (plain, 0); |
| 86 |
gpgme_data_release (ciph); |
| 87 |
return err; |
| 88 |
} |
| 89 |
|
| 90 |
|
| 91 |
/* Convenient function to provide clipboard decryption. |
| 92 |
@hwnd is the parent window used for showing messsages. |
| 93 |
Return value: 0 on success. */ |
| 94 |
gpgme_error_t |
| 95 |
clip_decrypt_dlg (HWND hwnd) |
| 96 |
{ |
| 97 |
gpgme_error_t err; |
| 98 |
gpgme_ctx_t ctx = NULL; |
| 99 |
gpgme_signature_t sig = NULL; |
| 100 |
gpgme_decrypt_result_t res; |
| 101 |
gpgme_verify_result_t sigres; |
| 102 |
passphrase_cb_s pwd; |
| 103 |
const char *s; |
| 104 |
const char *uid; |
| 105 |
int pgp_type = 0; |
| 106 |
int novalid = 0; |
| 107 |
|
| 108 |
/* allow to verify data generated by 'gpg -a --sign foo' */ |
| 109 |
if (fm_assume_onepass_sig (NULL) == 0) { |
| 110 |
/* XXX: addtitional steps needed? */ |
| 111 |
} |
| 112 |
|
| 113 |
err = gpgme_new (&ctx); |
| 114 |
if (err) |
| 115 |
BUG (NULL); |
| 116 |
set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_DECRYPT, hwnd, _("Decryption")); |
| 117 |
gpg_get_recipients (NULL, &pwd.recipients); |
| 118 |
|
| 119 |
err = gpgme_op_clip_decrypt (ctx); |
| 120 |
if (pwd.cancel) |
| 121 |
goto leave; |
| 122 |
if (gpgme_err_code (err) == GPG_ERR_BAD_PASSPHRASE) |
| 123 |
agent_del_cache (pwd.keyid); |
| 124 |
|
| 125 |
res = gpgme_op_decrypt_result (ctx); |
| 126 |
if (err && res->recipients && !secret_key_available (res->recipients)) { |
| 127 |
gpgme_recipient_t r = res->recipients; |
| 128 |
char *u = get_key_userid (r->keyid+8); |
| 129 |
log_box (_("Decryption"), MB_ERR, |
| 130 |
_("Encrypted with %s key, ID %s.%s\n" |
| 131 |
"Decryption failed: secret key not available."), |
| 132 |
get_key_pubalgo (r->pubkey_algo), r->keyid+8, u); |
| 133 |
free_if_alloc (u); |
| 134 |
goto leave; |
| 135 |
} |
| 136 |
else if (res->unsupported_algorithm) { |
| 137 |
log_box (_("Decryption"), MB_ERR, _("Unsupported algorithm: %s"), |
| 138 |
res->unsupported_algorithm); |
| 139 |
} |
| 140 |
else if (err) { |
| 141 |
gpg_clip_get_pgptype (&pgp_type); |
| 142 |
if (gpgme_err_code (err) == GPG_ERR_NO_DATA && (pgp_type & PGP_MESSAGE)) |
| 143 |
msg_box (hwnd, _("Broken OpenPGP message (maybe: quoted printable " |
| 144 |
"character in armor)."), _("Decryption"), MB_INFO); |
| 145 |
else |
| 146 |
msg_box (hwnd, gpgme_strerror (err), _("Decryption"), MB_ERR); |
| 147 |
goto leave; |
| 148 |
} |
| 149 |
|
| 150 |
if (0) { /* XXX: Bad MDC */ |
| 151 |
s = _("WARNING: encrypted message has been manipulated!\n" |
| 152 |
"\n" |
| 153 |
"Do *NOT* trust any text or data output from this file!\n" |
| 154 |
"It is likely, the data was corrupted during the transport\n" |
| 155 |
"but it might be also possible that this is part of an attack."); |
| 156 |
msg_box (hwnd, s, _("*** IMPORTANT ***"), MB_INFO); |
| 157 |
} |
| 158 |
|
| 159 |
show_msg (GetDesktopWindow (), 1500, _("GnuPG Status: Finished")); |
| 160 |
|
| 161 |
sigres = gpgme_op_verify_result (ctx); |
| 162 |
if (sigres && sigres->signatures) { |
| 163 |
winpt_key_s key; |
| 164 |
const char *keyid; |
| 165 |
|
| 166 |
sig = sigres->signatures; |
| 167 |
if (!sig->fpr) |
| 168 |
BUG (NULL); |
| 169 |
keyid = get_keyid_from_fpr (sig->fpr); |
| 170 |
memset (&key, 0, sizeof (key)); |
| 171 |
if (!winpt_get_pubkey (keyid, &key)) { |
| 172 |
if (key.ctx->owner_trust == GPGME_VALIDITY_FULL || |
| 173 |
key.ctx->owner_trust == GPGME_VALIDITY_ULTIMATE) |
| 174 |
s = _("Signature Status: Created with a fully trusted key"); |
| 175 |
else if (key.ctx->owner_trust == GPGME_VALIDITY_MARGINAL) |
| 176 |
s = _("Signature Status: Created with a marginal trusted key"); |
| 177 |
else if (key.ctx->owner_trust == GPGME_VALIDITY_NEVER) { |
| 178 |
novalid = 1; |
| 179 |
s = _("Signature Status: Created with an UNTRUSTED key"); |
| 180 |
} |
| 181 |
else |
| 182 |
s = _("Signature Status: Created with an undefined trusted key"); |
| 183 |
uid = key.ext->uids->uid; |
| 184 |
} |
| 185 |
else { |
| 186 |
s = ""; |
| 187 |
uid = _("user ID not found"); |
| 188 |
} |
| 189 |
log_box (_("WinPT Verify"), MB_OK, |
| 190 |
_("%s\n" |
| 191 |
"%s\n" |
| 192 |
"Signature made: %s\n" |
| 193 |
"From \"%s\" using key ID 0x%s" |
| 194 |
"%s %s"), |
| 195 |
s, get_gpg_sigstat (sig->summary), |
| 196 |
strtimestamp (sig->timestamp), |
| 197 |
uid, keyid, |
| 198 |
novalid? "\nPrimary key fingerprint: " : "", |
| 199 |
novalid? get_key_fpr (key.ctx) : ""); |
| 200 |
} |
| 201 |
|
| 202 |
leave: |
| 203 |
release_gpg_passphrase_cb (&pwd); |
| 204 |
gpgme_release (ctx); |
| 205 |
return err; |
| 206 |
} |
Parent Directory
| 
Revision Log