trunk/Src/wptClipSignDlg.cpp

/* wptClipSignDlg.cpp - WinPT clipboard sign dialog
 *      Copyright (C) 2000, 2001, 2002, 2003, 2005 Timo Schulz
 *      Copyright (C) 2005 g10 Code GmbH
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * WinPT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include <windows.h>
#include <commctrl.h>

#include "../resource.h"
#include "wptTypes.h"
#include "wptAgent.h"
#include "wptNLS.h"
#include "wptCrypto.h"
#include "wptGPG.h"
#include "wptCommonCtl.h"
#include "wptRegistry.h"
#include "wptKeylist.h"
#include "wptErrors.h"
#include "wptW32API.h"
#include "wptVersion.h"
#include "wptContext.h" /* for passphrase_s */
#include "wptDlgs.h"


/* Sign the clipboard contents with the key @keyid and wrap
   text lines to @wraplen (0 disable line wrapping).
   Return value: 0 on success. */
gpgme_error_t
gpg_clip_sign (gpgme_ctx_t ctx, const char *keyid, int wraplen)
{
    gpgme_error_t err;
    gpgme_data_t plain = NULL;
    gpgme_data_t sig = NULL;
    gpgme_key_t key = NULL;
    
    if (!keyid)
        return gpg_error (GPG_ERR_INV_ARG);
    
    gpgme_set_armor (ctx, 1);
    
    err = gpg_data_new_from_clipboard (&plain, wraplen);
    if (err)
        return err;

    get_pubkey (keyid, &key);
    if (key)
        err = gpgme_signers_add (ctx, key);
    else {
        err = gpg_error (GPG_ERR_NO_PUBKEY);
        goto leave;
    }
    err = gpgme_data_new (&sig);
    if (err)
        goto leave;     
    err = gpgme_op_sign (ctx, plain, sig, GPGME_SIG_MODE_CLEAR);
    if (err)
        goto leave;
    
    gpg_data_release_and_set_clipboard (sig, 1);
    sig = NULL;    

leave:
    if (plain)
        gpgme_data_release (plain);
    if (sig)
        gpgme_data_release (sig);
    return err;
}


/* This function is used when only one secret key is available.
 * it doesn't make sense to offer a dialog for this case.
 */
void
one_key_proc (HWND dlg)
{
    char * signer;
    gpgme_ctx_t ctx;
    gpgme_error_t err;
    passphrase_cb_s pwd;
    int rc = 0;
    int n = reg_prefs.word_wrap;
    
    signer = get_gnupg_default_key ();
    if (!signer) {
        msg_box (dlg, _("Could not get default key."), _("Signing"), MB_ERR);
        return;
    }
    
    err = gpgme_new (&ctx);
    if (err)
        BUG (dlg);

    set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_SIGN, dlg, _("Signing"));
    err = gpg_clip_sign (ctx, signer, n );
    wipememory (pwd.pwd, sizeof (pwd.pwd));
    if (gpgme_err_code (err) == GPG_ERR_BAD_PASSPHRASE)
        agent_del_cache (pwd.keyid);
    if (err)
        msg_box (dlg, gpgme_strerror (err), _("Signing"), MB_ERR);
    else
        show_msg (dlg, 1500, _("GnuPG Status: Finished"));
    gpgme_release (ctx);
    free_if_alloc (signer);
}


/* Dialog box procedure for clipboard signing. */
BOOL CALLBACK 
clip_sign_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
{       
    static listview_ctrl_t lv = NULL;
    gpg_keycache_t kc, sec_kc;
    gpgme_ctx_t ctx;
    gpgme_error_t err;
    passphrase_cb_s pwd;
    int lv_idx = 0;
    int rc = 0, no_signer = 0;
    char * signer = NULL;
    
    switch( msg ) {
    case WM_INITDIALOG:
    #ifndef LANG_DE
        SetWindowText( dlg, _("Signing") );
    #endif
        kc = keycache_get_ctx (KEYCACHE_PUB);
        if (!kc)
            BUG( NULL );
        sec_kc = keycache_get_ctx (KEYCACHE_PRV);
        if (!sec_kc)
            BUG (dlg);
        if (gpg_keycache_get_size (sec_kc) == 1) {
            one_key_proc (dlg);
            EndDialog (dlg, TRUE);
            return FALSE;
        }
        lv = keylist_load (GetDlgItem (dlg, IDC_SIGN_KEYLIST), kc, sec_kc,
                           KEYLIST_SIGN, KEY_SORT_USERID);
        center_window (dlg, NULL);
        SetForegroundWindow (dlg);
        set_active_window (dlg);
        return FALSE;   
        
    case WM_DESTROY:
        reset_active_window ();
        if (lv) {
            keylist_delete (lv);
            lv = NULL;
        }
        return FALSE;
        
    case WM_NOTIFY:
        NMHDR * notify;
        notify = (NMHDR *)lparam;
        if( notify && notify->code == NM_DBLCLK
            && notify->idFrom == IDC_SIGN_KEYLIST )
            PostMessage( dlg, WM_COMMAND, MAKEWPARAM(IDOK, 0), NULL );
        return TRUE;
        
    case WM_SYSCOMMAND:
        if( LOWORD (wparam) == SC_CLOSE )
            EndDialog(dlg, TRUE);
        return FALSE;
        
    case WM_COMMAND:
        switch (LOWORD (wparam)) {
        case IDOK:
            signer = get_gnupg_default_key ();
            if (!signer) {
                msg_box( dlg, _("Could not get default key."), _("Signing"), MB_ERR );
                return FALSE;
            }
            if (listview_count_items (lv, 0) == 1) {
                listview_get_item_text (lv, 0, 1, signer, sizeof signer-1);
                no_signer = 0;
            }
            else if ((lv_idx = listview_get_curr_pos (lv)) == -1) {
                rc = log_box (_("Signing"), MB_YESNO,
                              _("No key was chosen.\nUse the GPG default key '%s'?"),
                              signer);
                if (rc == IDNO) {
                    free_if_alloc (signer);
                    return FALSE;
                }
                no_signer = 1;
            }
            if (!no_signer) {
                free_if_alloc (signer);
                signer = new char[32+1];
                if (!signer)
                    BUG (NULL);
                listview_get_item_text (lv, lv_idx, 1, signer, 32);
            }
            err = gpgme_new (&ctx);
            if (err)
                BUG (dlg);
            set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_SIGN, dlg, _("Signing"));
            err = gpg_clip_sign (ctx, signer, reg_prefs.word_wrap);
            free_if_alloc (signer);
            release_gpg_passphrase_cb (&pwd);

            if (pwd.cancel && gpgme_err_code(err) == GPG_ERR_BAD_PASSPHRASE) {
                /* The user hit the cancel button or bad passphrase */
                gpgme_release (ctx);
                EndDialog (dlg, TRUE);
                return TRUE;
            }
            if (err) {
                msg_box (dlg, gpgme_strerror (err), _("Signing"), MB_ERR);
                gpgme_release (ctx);
                return FALSE;
            }
            else                     
                show_msg( dlg, 1500, _("GnuPG Status: Finished") );
            gpgme_release (ctx);
            EndDialog (dlg, TRUE);
            return TRUE;
            
        case IDCANCEL:
            EndDialog (dlg, FALSE);
            return FALSE;
        }
        break;
    }
    
    return FALSE;
}

1	twoaday	2	/* wptClipSignDlg.cpp - WinPT clipboard sign dialog
2	twoaday	23	* Copyright (C) 2000, 2001, 2002, 2003, 2005 Timo Schulz
3			* Copyright (C) 2005 g10 Code GmbH
4	twoaday	2	*
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			#include <windows.h>
23			#include <commctrl.h>
24
25			#include "../resource.h"
26			#include "wptTypes.h"
27			#include "wptAgent.h"
28			#include "wptNLS.h"
29	twoaday	32	#include "wptCrypto.h"
30	twoaday	2	#include "wptGPG.h"
31			#include "wptCommonCtl.h"
32			#include "wptRegistry.h"
33			#include "wptKeylist.h"
34			#include "wptErrors.h"
35			#include "wptW32API.h"
36			#include "wptVersion.h"
37			#include "wptContext.h" /* for passphrase_s */
38			#include "wptDlgs.h"
39
40	twoaday	30
41	twoaday	23	/* Sign the clipboard contents with the key @keyid and wrap
42			text lines to @wraplen (0 disable line wrapping).
43			Return value: 0 on success. */
44			gpgme_error_t
45			gpg_clip_sign (gpgme_ctx_t ctx, const char *keyid, int wraplen)
46			{
47			gpgme_error_t err;
48			gpgme_data_t plain = NULL;
49			gpgme_data_t sig = NULL;
50			gpgme_key_t key = NULL;
51
52			if (!keyid)
53			return gpg_error (GPG_ERR_INV_ARG);
54
55			gpgme_set_armor (ctx, 1);
56
57			err = gpg_data_new_from_clipboard (&plain, wraplen);
58			if (err)
59			return err;
60	twoaday	2
61	twoaday	23	get_pubkey (keyid, &key);
62			if (key)
63			err = gpgme_signers_add (ctx, key);
64			else {
65			err = gpg_error (GPG_ERR_NO_PUBKEY);
66			goto leave;
67			}
68			err = gpgme_data_new (&sig);
69			if (err)
70			goto leave;
71			err = gpgme_op_sign (ctx, plain, sig, GPGME_SIG_MODE_CLEAR);
72			if (err)
73			goto leave;
74
75			gpg_data_release_and_set_clipboard (sig, 1);
76			sig = NULL;
77
78			leave:
79			if (plain)
80			gpgme_data_release (plain);
81			if (sig)
82			gpgme_data_release (sig);
83			return err;
84			}
85
86
87	twoaday	2	/* This function is used when only one secret key is available.
88			* it doesn't make sense to offer a dialog for this case.
89			*/
90			void
91			one_key_proc (HWND dlg)
92			{
93			char * signer;
94			gpgme_ctx_t ctx;
95			gpgme_error_t err;
96			passphrase_cb_s pwd;
97	twoaday	23	int rc = 0;
98			int n = reg_prefs.word_wrap;
99	twoaday	2
100			signer = get_gnupg_default_key ();
101	twoaday	23	if (!signer) {
102			msg_box (dlg, _("Could not get default key."), _("Signing"), MB_ERR);
103	twoaday	2	return;
104			}
105
106	twoaday	23	err = gpgme_new (&ctx);
107			if (err)
108			BUG (dlg);
109	twoaday	2
110	twoaday	23	set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_SIGN, dlg, _("Signing"));
111			err = gpg_clip_sign (ctx, signer, n );
112	twoaday	30	wipememory (pwd.pwd, sizeof (pwd.pwd));
113	twoaday	25	if (gpgme_err_code (err) == GPG_ERR_BAD_PASSPHRASE)
114	twoaday	23	agent_del_cache (pwd.keyid);
115			if (err)
116			msg_box (dlg, gpgme_strerror (err), _("Signing"), MB_ERR);
117	twoaday	2	else
118	twoaday	23	show_msg (dlg, 1500, _("GnuPG Status: Finished"));
119			gpgme_release (ctx);
120			free_if_alloc (signer);
121			}
122	twoaday	2
123
124	twoaday	23	/* Dialog box procedure for clipboard signing. */
125	twoaday	2	BOOL CALLBACK
126	twoaday	23	clip_sign_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
127	twoaday	2	{
128			static listview_ctrl_t lv = NULL;
129	twoaday	25	gpg_keycache_t kc, sec_kc;
130	twoaday	2	gpgme_ctx_t ctx;
131			gpgme_error_t err;
132			passphrase_cb_s pwd;
133			int lv_idx = 0;
134			int rc = 0, no_signer = 0;
135			char * signer = NULL;
136
137			switch( msg ) {
138			case WM_INITDIALOG:
139	twoaday	23	#ifndef LANG_DE
140	twoaday	2	SetWindowText( dlg, _("Signing") );
141	twoaday	23	#endif
142			kc = keycache_get_ctx (KEYCACHE_PUB);
143			if (!kc)
144	twoaday	2	BUG( NULL );
145	twoaday	23	sec_kc = keycache_get_ctx (KEYCACHE_PRV);
146			if (!sec_kc)
147			BUG (dlg);
148	twoaday	25	if (gpg_keycache_get_size (sec_kc) == 1) {
149	twoaday	23	one_key_proc (dlg);
150			EndDialog (dlg, TRUE);
151	twoaday	2	return FALSE;
152			}
153	twoaday	23	lv = keylist_load (GetDlgItem (dlg, IDC_SIGN_KEYLIST), kc, sec_kc,
154			KEYLIST_SIGN, KEY_SORT_USERID);
155			center_window (dlg, NULL);
156			SetForegroundWindow (dlg);
157			set_active_window (dlg);
158	twoaday	2	return FALSE;
159
160			case WM_DESTROY:
161	twoaday	23	reset_active_window ();
162			if (lv) {
163			keylist_delete (lv);
164	twoaday	2	lv = NULL;
165			}
166			return FALSE;
167
168			case WM_NOTIFY:
169			NMHDR * notify;
170			notify = (NMHDR *)lparam;
171			if( notify && notify->code == NM_DBLCLK
172			&& notify->idFrom == IDC_SIGN_KEYLIST )
173			PostMessage( dlg, WM_COMMAND, MAKEWPARAM(IDOK, 0), NULL );
174			return TRUE;
175
176			case WM_SYSCOMMAND:
177			if( LOWORD (wparam) == SC_CLOSE )
178			EndDialog(dlg, TRUE);
179			return FALSE;
180
181			case WM_COMMAND:
182	twoaday	23	switch (LOWORD (wparam)) {
183	twoaday	2	case IDOK:
184			signer = get_gnupg_default_key ();
185	twoaday	23	if (!signer) {
186	twoaday	2	msg_box( dlg, _("Could not get default key."), _("Signing"), MB_ERR );
187			return FALSE;
188			}
189	twoaday	23	if (listview_count_items (lv, 0) == 1) {
190			listview_get_item_text (lv, 0, 1, signer, sizeof signer-1);
191	twoaday	2	no_signer = 0;
192			}
193	twoaday	23	else if ((lv_idx = listview_get_curr_pos (lv)) == -1) {
194			rc = log_box (_("Signing"), MB_YESNO,
195	twoaday	2	_("No key was chosen.\nUse the GPG default key '%s'?"),
196	twoaday	23	signer);
197			if (rc == IDNO) {
198	twoaday	2	free_if_alloc (signer);
199			return FALSE;
200			}
201			no_signer = 1;
202			}
203	twoaday	23	if (!no_signer) {
204	twoaday	2	free_if_alloc (signer);
205			signer = new char[32+1];
206			if (!signer)
207			BUG (NULL);
208			listview_get_item_text (lv, lv_idx, 1, signer, 32);
209			}
210			err = gpgme_new (&ctx);
211	twoaday	23	if (err)
212			BUG (dlg);
213			set_gpg_passphrase_cb (&pwd, ctx, GPG_CMD_SIGN, dlg, _("Signing"));
214			err = gpg_clip_sign (ctx, signer, reg_prefs.word_wrap);
215			free_if_alloc (signer);
216	twoaday	25	release_gpg_passphrase_cb (&pwd);
217	twoaday	23
218	twoaday	24	if (pwd.cancel && gpgme_err_code(err) == GPG_ERR_BAD_PASSPHRASE) {
219	twoaday	23	/* The user hit the cancel button or bad passphrase */
220			gpgme_release (ctx);
221			EndDialog (dlg, TRUE);
222	twoaday	2	return TRUE;
223			}
224	twoaday	23	if (err) {
225			msg_box (dlg, gpgme_strerror (err), _("Signing"), MB_ERR);
226	twoaday	25	gpgme_release (ctx);
227	twoaday	2	return FALSE;
228			}
229			else
230			show_msg( dlg, 1500, _("GnuPG Status: Finished") );
231	twoaday	23	gpgme_release (ctx);
232			EndDialog (dlg, TRUE);
233	twoaday	2	return TRUE;
234
235			case IDCANCEL:
236	twoaday	23	EndDialog (dlg, FALSE);
237	twoaday	2	return FALSE;
238			}
239			break;
240			}
241
242			return FALSE;
243	twoaday	23	}
244