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_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	twoaday	2	/* 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_init( const char pubring, const char secring )
79			{
80			struct progress_filter_s pfx;
81			gpgme_error_t err;
82			int val = 0;
83			char * p;
84
85			if (reload) {
86			keycache_release ();
87			reload = 0;
88			}
89			p = get_reg_entry (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys");
90			if (p && *p != ' ')
91			{
92			val = atoi (p);
93			free_if_alloc (p);
94			memset (&pfx, 0, sizeof pfx);
95			}
96
97			err = gpgme_keycache_new (&pub);
98			if (err)
99			return err;
100			if (val != 0)
101			gpgme_keycache_set_cb (pub, progress_callback, &pfx, val);
102			err = gpgme_keycache_new (&sec);
103			if (!err)
104			err = gpgme_keycache_init (pub, NULL, 0);
105			if (!err)
106			err = gpgme_keycache_init( sec, NULL, 1 );
107			if( !err && pubring && *pubring )
108			err = gpgme_keycache_prepare( pub, pubring, NULL );
109			if( !err && secring && * secring )
110			err = gpgme_keycache_prepare( sec, NULL, secring );
111			if (!err)
112			gpgme_keycache_sync (pub, sec);
113			if (val != 0)
114			progress_cleanup (&pfx);
115			return err;
116			} /* keycache_init */
117
118
119			void
120			keycache_set_reload( int yes )
121			{
122			reload = yes;
123			} /* keycache_set_reload */
124
125
126			int
127			keycache_get_reload( void )
128			{
129			return reload;
130			} /* keycache_get_reload */
131
132
133			gpgme_keycache_t
134			keycache_get_ctx( int is_pub )
135			{
136			return is_pub? pub : sec;
137			} /* keycache_get_ctx */
138
139
140			static int
141			get_key( const char keyid, gpgme_key_t r_key, int secret )
142			{
143			gpgme_keycache_t cache;
144			gpgme_error_t err;
145			int mode = secret? KEYCACHE_PRV : KEYCACHE_PUB;
146
147			if( !keyid )
148			return WPTERR_GENERAL;
149			if( r_key )
150			*r_key = NULL;
151			cache = keycache_get_ctx( mode );
152			if( !cache )
153			BUG( NULL );
154			err = gpgme_keycache_find_key( cache, keyid, 0, r_key );
155			if( err )
156			return WPTERR_GENERAL;
157			return 0;
158			} /* get_key */
159
160
161			static int
162			get_key2( const char * keyid, gpgme_key_t * r_key, int secret )
163			{
164			gpg_iobuf_t inp;
165			char * p;
166			int rc;
167
168			p = get_gnupg_keyring (1, !NO_STRICT);
169			if( !p )
170			BUG( NULL );
171
172			inp = gpg_iobuf_open( p );
173			if( !inp ) {
174			const char *s = winpt_strerror( WPTERR_FILE_OPEN );
175			log_box( _("WinPT Error"), 0, "%s: %s", p, s );
176			free_if_alloc( p );
177			return NULL;
178			}
179			gpg_iobuf_ioctl( inp, 3, 1, NULL ); /* disable cache */
180			rc = gpgme_getkey_bykeyid( inp, keyid, r_key );
181
182			gpg_iobuf_close( inp );
183			free_if_alloc( p );
184			return rc;
185			} /* get_key2 */
186
187
188			int
189			get_pubkey( const char keyid, gpgme_key_t ret_key )
190			{
191			int rc = 0;
192
193			if( pub && sec )
194			rc = get_key( keyid, ret_key, 0 );
195			else
196			rc = get_key2( keyid, ret_key, 0 );
197			return rc;
198			} /* get_pubkey */
199
200
201			int
202			get_seckey( const char keyid, gpgme_key_t ret_skey )
203			{
204			int rc = 0;
205
206			if( pub && sec )
207			rc = get_key( keyid, ret_skey, 1 );
208			else
209			rc = get_key2( keyid, ret_skey, 1 );
210			return rc;
211			} /* get_seckey */
212
213
214			int
215			count_insecure_elgkeys (void)
216			{
217			gpgme_keycache_t pc;
218			gpgme_key_t key;
219			int n=0;
220
221			pc = keycache_get_ctx (1);
222			if (!pc)
223			BUG (0);
224			while (!gpgme_keycache_next_key (pc, 0, &key)) {
225			if (gpgme_key_get_ulong_attr (key, GPGME_ATTR_ALGO, NULL, 0)
226			== GPGME_PK_ELG_ES)
227			n++;
228			}
229			gpgme_keycache_rewind (pc);
230			return n;
231			}