trunk/Src/wptGPGME.cpp

/* wptGPGME.cpp - WinPT GPGME interface
 *      Copyright (C) 2001-2004 Timo Schulz
 *
 * 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 <sys/types.h>
#include <windows.h>

#include "../resource.h"
#include "wptNLS.h"
#include "wptGPG.h"
#include "wptErrors.h"
#include "wptTypes.h"
#include "wptW32API.h"
#include "wptVersion.h"
#include "wptCommonCtl.h"
#include "wptContext.h"
#include "wptRegistry.h"
#include "wptDlgs.h"

#include "openpgp.h"

BOOL CALLBACK  keycache_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam);
void progress_cleanup (progress_filter_s * pfx);

static gpgme_keycache_t pub = NULL;
static gpgme_keycache_t sec = NULL;
static unsigned int reload = 0;


void
keycache_reload (HWND dlg) 
{       
    refresh_cache_s rcs = {0};

    rcs.kr_reload = rcs.kr_update = 1;
    /*rcs.tr_update = 1;*/
    DialogBoxParam( glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, dlg,                                        
                    keycache_dlg_proc, (LPARAM)&rcs );
} /* keycache_reload */

void
keycache_release (void)
{
    int n = gpgme_keycache_count (pub);
    char tmpbuf[64];

    sprintf (tmpbuf, "%d", n);
    set_reg_key (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys", tmpbuf);

    if (pub) {
        gpgme_keycache_release( pub ); 
        pub = NULL;
    }
    if (sec) {
        gpgme_keycache_release( sec );
        sec = NULL;
    }
} /* keycache_release */


gpgme_error_t
keycache_update (int is_sec, const char *keyid)
{
    gpgme_keycache_t ctx = pub;
    if (is_sec)
        ctx = sec;
    return gpgme_keycache_update_key (ctx, is_sec, pub, keyid);
}


gpgme_error_t
keycache_init (const char *pubring, const char * secring)
{
    struct progress_filter_s pfx;
    gpgme_error_t err;
    int val = 0;
    char * p;

    if (reload) {
        keycache_release ();
        reload = 0;
    }
    p = get_reg_entry (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys");
    if (p && *p != ' ') {
        val = atoi (p);
        free_if_alloc (p);
        memset (&pfx, 0, sizeof pfx);
    }

    err = gpgme_keycache_new (&pub);
    if (err)
        return err;
    if (val != 0)
        gpgme_keycache_set_cb (pub, progress_callback, &pfx, val);
    err = gpgme_keycache_new (&sec);
    if (!err)
        err = gpgme_keycache_init (pub, NULL, 0);
    if (!err)
        err = gpgme_keycache_init( sec, NULL, 1 );
    if( !err && pubring && *pubring )
        err = gpgme_keycache_prepare( pub, pubring, NULL );
    if( !err && secring && * secring )
        err = gpgme_keycache_prepare( sec, NULL, secring );
    if (!err)
        gpgme_keycache_sync (pub, sec);
    if (val != 0)
        progress_cleanup (&pfx);
    return err;
} /* keycache_init */


void
keycache_set_reload( int yes )
{
    reload = yes;
} /* keycache_set_reload */


int
keycache_get_reload( void )
{
    return reload;
} /* keycache_get_reload */


gpgme_keycache_t
keycache_get_ctx( int is_pub )
{
    return is_pub? pub : sec;
} /* keycache_get_ctx */


static int
get_key( const char *keyid, gpgme_key_t *r_key, int secret )
{
    gpgme_keycache_t cache;
    gpgme_error_t err;
    int mode = secret? KEYCACHE_PRV : KEYCACHE_PUB;

    if( !keyid )
        return WPTERR_GENERAL;
    if( r_key )
        *r_key = NULL;
    cache = keycache_get_ctx( mode );
    if( !cache )
        BUG( NULL );
    err = gpgme_keycache_find_key( cache, keyid, 0, r_key );
    if( err )
        return WPTERR_GENERAL;
    return 0;
} /* get_key */


static int
get_key2( const char * keyid, gpgme_key_t * r_key, int secret )
{
    gpg_iobuf_t inp;
    char * p;
    int rc;

    p = get_gnupg_keyring (1, !NO_STRICT);
    if( !p )
        BUG( NULL );

    inp = gpg_iobuf_open( p );
    if( !inp ) {
        const char *s = winpt_strerror( WPTERR_FILE_OPEN );
        log_box( _("WinPT Error"), 0, "%s: %s", p, s );
        free_if_alloc( p );
        return NULL;
    } 
    gpg_iobuf_ioctl( inp, 3, 1, NULL ); /* disable cache */
    rc = gpgme_getkey_bykeyid( inp, keyid, r_key );

    gpg_iobuf_close( inp );
    free_if_alloc( p );
    return rc;
} /* get_key2 */


int
get_pubkey( const char *keyid, gpgme_key_t *ret_key )
{
    int rc = 0;

    if( pub && sec )
        rc = get_key( keyid, ret_key, 0 );
    else
        rc = get_key2( keyid, ret_key, 0 );
    return rc;
} /* get_pubkey */


int
get_seckey( const char *keyid, gpgme_key_t *ret_skey )
{
    int rc = 0;

    if( pub && sec )
        rc = get_key( keyid, ret_skey, 1 );
    else
        rc = get_key2( keyid, ret_skey, 1 );
    return rc;
} /* get_seckey */


int
count_insecure_elgkeys (void)
{
    gpgme_keycache_t pc;
    gpgme_key_t key;
    int n=0;

    pc = keycache_get_ctx (1);
    if (!pc)
        BUG (0);
    while (!gpgme_keycache_next_key (pc, 0, &key)) {
        if (gpgme_key_get_ulong_attr (key, GPGME_ATTR_ALGO, NULL, 0)
            == GPGME_PK_ELG_ES)
            n++;
    }
    gpgme_keycache_rewind (pc);
    return n;
}
1	/* wptGPGME.cpp - WinPT GPGME interface
2	* Copyright (C) 2001-2004 Timo Schulz
3	*
4	* This file is part of WinPT.
5	*
6	* WinPT is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU General Public License
8	* as published by the Free Software Foundation; either version 2
9	* of the License, or (at your option) any later version.
10	*
11	* WinPT is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with WinPT; if not, write to the Free Software Foundation,
18	* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	#include <sys/types.h>
22	#include <windows.h>
23
24	#include "../resource.h"
25	#include "wptNLS.h"
26	#include "wptGPG.h"
27	#include "wptErrors.h"
28	#include "wptTypes.h"
29	#include "wptW32API.h"
30	#include "wptVersion.h"
31	#include "wptCommonCtl.h"
32	#include "wptContext.h"
33	#include "wptRegistry.h"
34	#include "wptDlgs.h"
35
36	#include "openpgp.h"
37
38	BOOL CALLBACK keycache_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam);
39	void progress_cleanup (progress_filter_s * pfx);
40
41	static gpgme_keycache_t pub = NULL;
42	static gpgme_keycache_t sec = NULL;
43	static unsigned int reload = 0;
44
45
46	void
47	keycache_reload (HWND dlg)
48	{
49	refresh_cache_s rcs = {0};
50
51	rcs.kr_reload = rcs.kr_update = 1;
52	/rcs.tr_update = 1;/
53	DialogBoxParam( glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, dlg,
54	keycache_dlg_proc, (LPARAM)&rcs );
55	} /* keycache_reload */
56
57	void
58	keycache_release (void)
59	{
60	int n = gpgme_keycache_count (pub);
61	char tmpbuf[64];
62
63	sprintf (tmpbuf, "%d", n);
64	set_reg_key (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys", tmpbuf);
65
66	if (pub) {
67	gpgme_keycache_release( pub );
68	pub = NULL;
69	}
70	if (sec) {
71	gpgme_keycache_release( sec );
72	sec = NULL;
73	}
74	} /* keycache_release */
75
76
77	gpgme_error_t
78	keycache_update (int is_sec, const char *keyid)
79	{
80	gpgme_keycache_t ctx = pub;
81	if (is_sec)
82	ctx = sec;
83	return gpgme_keycache_update_key (ctx, is_sec, pub, keyid);
84	}
85
86
87	gpgme_error_t
88	keycache_init (const char pubring, const char secring)
89	{
90	struct progress_filter_s pfx;
91	gpgme_error_t err;
92	int val = 0;
93	char * p;
94
95	if (reload) {
96	keycache_release ();
97	reload = 0;
98	}
99	p = get_reg_entry (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys");
100	if (p && *p != ' ') {
101	val = atoi (p);
102	free_if_alloc (p);
103	memset (&pfx, 0, sizeof pfx);
104	}
105
106	err = gpgme_keycache_new (&pub);
107	if (err)
108	return err;
109	if (val != 0)
110	gpgme_keycache_set_cb (pub, progress_callback, &pfx, val);
111	err = gpgme_keycache_new (&sec);
112	if (!err)
113	err = gpgme_keycache_init (pub, NULL, 0);
114	if (!err)
115	err = gpgme_keycache_init( sec, NULL, 1 );
116	if( !err && pubring && *pubring )
117	err = gpgme_keycache_prepare( pub, pubring, NULL );
118	if( !err && secring && * secring )
119	err = gpgme_keycache_prepare( sec, NULL, secring );
120	if (!err)
121	gpgme_keycache_sync (pub, sec);
122	if (val != 0)
123	progress_cleanup (&pfx);
124	return err;
125	} /* keycache_init */
126
127
128	void
129	keycache_set_reload( int yes )
130	{
131	reload = yes;
132	} /* keycache_set_reload */
133
134
135	int
136	keycache_get_reload( void )
137	{
138	return reload;
139	} /* keycache_get_reload */
140
141
142	gpgme_keycache_t
143	keycache_get_ctx( int is_pub )
144	{
145	return is_pub? pub : sec;
146	} /* keycache_get_ctx */
147
148
149	static int
150	get_key( const char keyid, gpgme_key_t r_key, int secret )
151	{
152	gpgme_keycache_t cache;
153	gpgme_error_t err;
154	int mode = secret? KEYCACHE_PRV : KEYCACHE_PUB;
155
156	if( !keyid )
157	return WPTERR_GENERAL;
158	if( r_key )
159	*r_key = NULL;
160	cache = keycache_get_ctx( mode );
161	if( !cache )
162	BUG( NULL );
163	err = gpgme_keycache_find_key( cache, keyid, 0, r_key );
164	if( err )
165	return WPTERR_GENERAL;
166	return 0;
167	} /* get_key */
168
169
170	static int
171	get_key2( const char * keyid, gpgme_key_t * r_key, int secret )
172	{
173	gpg_iobuf_t inp;
174	char * p;
175	int rc;
176
177	p = get_gnupg_keyring (1, !NO_STRICT);
178	if( !p )
179	BUG( NULL );
180
181	inp = gpg_iobuf_open( p );
182	if( !inp ) {
183	const char *s = winpt_strerror( WPTERR_FILE_OPEN );
184	log_box( _("WinPT Error"), 0, "%s: %s", p, s );
185	free_if_alloc( p );
186	return NULL;
187	}
188	gpg_iobuf_ioctl( inp, 3, 1, NULL ); /* disable cache */
189	rc = gpgme_getkey_bykeyid( inp, keyid, r_key );
190
191	gpg_iobuf_close( inp );
192	free_if_alloc( p );
193	return rc;
194	} /* get_key2 */
195
196
197	int
198	get_pubkey( const char keyid, gpgme_key_t ret_key )
199	{
200	int rc = 0;
201
202	if( pub && sec )
203	rc = get_key( keyid, ret_key, 0 );
204	else
205	rc = get_key2( keyid, ret_key, 0 );
206	return rc;
207	} /* get_pubkey */
208
209
210	int
211	get_seckey( const char keyid, gpgme_key_t ret_skey )
212	{
213	int rc = 0;
214
215	if( pub && sec )
216	rc = get_key( keyid, ret_skey, 1 );
217	else
218	rc = get_key2( keyid, ret_skey, 1 );
219	return rc;
220	} /* get_seckey */
221
222
223	int
224	count_insecure_elgkeys (void)
225	{
226	gpgme_keycache_t pc;
227	gpgme_key_t key;
228	int n=0;
229
230	pc = keycache_get_ctx (1);
231	if (!pc)
232	BUG (0);
233	while (!gpgme_keycache_next_key (pc, 0, &key)) {
234	if (gpgme_key_get_ulong_attr (key, GPGME_ATTR_ALGO, NULL, 0)
235	== GPGME_PK_ELG_ES)
236	n++;
237	}
238	gpgme_keycache_rewind (pc);
239	return n;
240	}