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