/[winpt]/trunk/Src/wptGPGME.cpp
ViewVC logotype

Diff of /trunk/Src/wptGPGME.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 23 by twoaday, Fri Sep 30 10:10:16 2005 UTC revision 109 by twoaday, Fri Dec 2 07:32:13 2005 UTC
# Line 1  Line 1 
1  /* wptGPGME.cpp - WinPT GPGME interface  /* wptGPGME.cpp - WinPT GPGME interface
2   *      Copyright (C) 2001-2005 Timo Schulz   *      Copyright (C) 2001-2005 Timo Schulz
3   *   *
4   * This file is part of WinPT.   * This file is part of WinPT.
5   *   *
6   * WinPT is free software; you can redistribute it and/or   * WinPT is free software; you can redistribute it and/or
7   * modify it under the terms of the GNU General Public License   * modify it under the terms of the GNU General Public License
8   * as published by the Free Software Foundation; either version 2   * as published by the Free Software Foundation; either version 2
9   * of the License, or (at your option) any later version.   * of the License, or (at your option) any later version.
10   *     *  
11   * WinPT is distributed in the hope that it will be useful,   * WinPT is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14   * General Public License for more details.   * General Public License for more details.
15   *   *
16   * You should have received a copy of the GNU General Public License   * You should have received a copy of the GNU General Public License
17   * along with WinPT; if not, write to the Free Software Foundation,   * along with WinPT; if not, write to the Free Software Foundation,
18   * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA   * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19   */   */
20    #ifdef HAVE_CONFIG_H
21  #include <sys/types.h>  #include <config.h>
22  #include <windows.h>  #endif
23    
24  #include "../resource.h"  #include <sys/types.h>
25  #include "wptNLS.h"  #include <windows.h>
26  #include "wptGPG.h"  
27  #include "wptErrors.h"  #include "resource.h"
28  #include "wptTypes.h"  #include "wptNLS.h"
29  #include "wptW32API.h"  #include "wptGPG.h"
30  #include "wptVersion.h"  #include "wptErrors.h"
31  #include "wptCommonCtl.h"  #include "wptTypes.h"
32  #include "wptContext.h"  #include "wptW32API.h"
33  #include "wptRegistry.h"  #include "wptVersion.h"
34  #include "wptDlgs.h"  #include "wptCommonCtl.h"
35    #include "wptContext.h"
36  #include "openpgp.h"  #include "wptRegistry.h"
37    #include "wptDlgs.h"
38  BOOL CALLBACK  keycache_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam);  
39  void progress_cleanup (progress_filter_s * pfx);  #include "openpgp.h"
40    
41  static gpgme_keycache_t pub = NULL;  BOOL CALLBACK  keycache_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam);
42  static gpgme_keycache_t sec = NULL;  void progress_cleanup (progress_filter_s * pfx);
43  static unsigned int reload = 0;  
44  static char *gpg_secring = NULL;  static gpg_keycache_t pub = NULL;
45    static gpg_keycache_t sec = NULL;
46  void  static unsigned int reload = 0;
47  keycache_reload (HWND dlg)  static char *gpg_secring = NULL;
48  {        
49      refresh_cache_s rcs;  
50    /* Reload the key cache. */
51      memset (&rcs, 0, sizeof rcs);  void
52      rcs.kr_reload = rcs.kr_update = 1;  keycache_reload (HWND dlg)
53      rcs.tr_update = 0;  {      
54      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, dlg,                                              refresh_cache_s rcs;
55                      keycache_dlg_proc, (LPARAM)&rcs);  
56  } /* keycache_reload */      memset (&rcs, 0, sizeof rcs);
57        rcs.kr_reload = rcs.kr_update = 1;
58  void      rcs.tr_update = 0;
59  keycache_release (void)      DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, dlg,                                        
60  {                      keycache_dlg_proc, (LPARAM)&rcs);
61      int n = gpgme_keycache_count (pub);  }
62      char tmpbuf[64];  
63    
64      /* XXX: update the value when the cache has changed. */  /* Release both key cache objects. If @cleanup is 1,
65      sprintf (tmpbuf, "%d", n);     also release other global structs. */
66      set_reg_key (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys", tmpbuf);  void
67    keycache_release (int cleanup)
68      if (pub) {  {
69          gpgme_keycache_release (pub);      int n = gpg_keycache_get_size (pub);
70          pub = NULL;      char tmpbuf[64];
71      }  
72      if (sec) {      /* XXX: update the value when the cache has changed. */
73          gpgme_keycache_release (sec);      sprintf (tmpbuf, "%d", n);
74          sec = NULL;      set_reg_key (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys", tmpbuf);
75      }  
76  } /* keycache_release */      if (pub) {
77            gpg_keycache_release (pub);
78            pub = NULL;
79  gpgme_error_t      }
80  keycache_update (int is_sec, const char *keyid)      if (sec) {
81  {          gpg_keycache_release (sec);
82      gpgme_keycache_t ctx = pub;          sec = NULL;
83      gpgme_error_t err;      }
84        if (cleanup) {
85      if (is_sec)          if (gpg_secring)
86          ctx = sec;              free (gpg_secring);
87      err =  gpgme_keycache_update_key (ctx, is_sec, pub, keyid);          gpg_secring = NULL;
88      if (is_sec)      }
89          gpgme_keycache_prepare_single (ctx, keyid, NULL, gpg_secring);  }
90      return err;  
91  }  
92    /* Update the key with the keyid @keyid in the key cache.
93  /* XXX: cache_keyring_names must be called then the GPG homedir changes! */     If @is_sec is 1, the secret key cache is used. */
94    gpgme_error_t
95  gpgme_error_t  keycache_update (int is_sec, const char *keyid)
96  keycache_init (const char *pubring, const char * secring)  {
97  {      gpg_keycache_t ctx = pub;
98      struct progress_filter_s pfx;      gpgme_error_t err;
99      gpgme_error_t err;  
100      int val = 0;      if (is_sec)
101      char * p;          ctx = sec;
102        err = gpg_keycache_update_key (ctx, is_sec, pub, keyid);
103      if (secring != NULL) {      if (is_sec)
104          free_if_alloc (gpg_secring);          gpg_keycache_prepare_single (ctx, keyid, NULL, gpg_secring);
105          gpg_secring = get_gnupg_keyring (0, NO_STRICT);      return err;
106      }  }
107    
108      if (reload) {  /* XXX: cache_keyring_names must be called then the GPG homedir changes! */
109          keycache_release ();  
110          reload = 0;  /* Initialize both cache contexts. Use @pubring for the public
111      }     keyring and @secring for the secret keyring. */
112      p = get_reg_entry (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys");  gpgme_error_t
113      if (p && *p != ' ') {  keycache_init (const char *pubring, const char *secring)
114          val = atoi (p);  {
115          free_if_alloc (p);      struct progress_filter_s pfx;
116          memset (&pfx, 0, sizeof (pfx));      gpgme_error_t err;
117      }      int val = 0;
118        char *p;
119      err = gpgme_keycache_new (&pub);  
120      if (err)      if (secring != NULL) {
121          return err;          free_if_alloc (gpg_secring);
122      if (val != 0)          gpg_secring = get_gnupg_keyring (0, NO_STRICT);
123          gpgme_keycache_set_cb (pub, progress_callback, &pfx, val);      }
124      err = gpgme_keycache_new (&sec);  
125      if (!err)      if (reload) {
126          err = gpgme_keycache_init (pub, NULL, 0);          keycache_release (0);
127      if (!err)          reload = 0;
128          err = gpgme_keycache_init( sec, NULL, 1 );      }
129      if( !err && pubring && *pubring )      p = get_reg_entry (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys");
130          err = gpgme_keycache_prepare( pub, pubring, NULL );      if (p && *p != ' ') {
131      if( !err && secring && * secring )          val = atoi (p);
132          err = gpgme_keycache_prepare( sec, NULL, secring );          free_if_alloc (p);
133      if (!err)          memset (&pfx, 0, sizeof (pfx));
134          gpgme_keycache_sync (pub, sec);      }
135      if (val != 0)  
136          progress_cleanup (&pfx);      err = gpg_keycache_new (&pub);
137      return err;      if (err)
138  } /* keycache_init */          return err;
139        if (val != 0)
140            gpg_keycache_set_cb (pub, progress_callback, &pfx, val);
141  void      err = gpg_keycache_new (&sec);
142  keycache_set_reload( int yes )      if (!err)
143  {          err = gpg_keycache_init (pub, NULL, 0);
144      reload = yes;      if (!err)
145  } /* keycache_set_reload */          err = gpg_keycache_init( sec, NULL, 1 );
146        if( !err && pubring && *pubring )
147            err = gpg_keycache_prepare( pub, pubring, NULL );
148  int      if( !err && secring && * secring )
149  keycache_get_reload( void )          err = gpg_keycache_prepare( sec, NULL, secring );
150  {      if (!err)
151      return reload;          gpg_keycache_sync (pub, sec);
152  } /* keycache_get_reload */      if (val != 0)
153            progress_cleanup (&pfx);
154        return err;
155  gpgme_keycache_t  }
156  keycache_get_ctx (int is_pub)  
157  {  
158      return is_pub? pub : sec;  /* If @val = 1 indicate to reload the cache. */
159  } /* keycache_get_ctx */  void
160    keycache_set_reload (int val)
161    {
162  static int      reload = val;
163  get_key (const char *keyid, gpgme_key_t *r_key, struct keycache_s **c, int secret)  }
164  {  
165      gpgme_keycache_t cache;  
166      gpgme_error_t err;  /* Return the reload cache flag. */
167      int mode = secret? KEYCACHE_PRV : KEYCACHE_PUB;  int
168    keycache_get_reload (void)
169      if( !keyid )  {
170          return WPTERR_GENERAL;      return reload;
171      if( r_key )  }
172          *r_key = NULL;  
173      cache = keycache_get_ctx (mode);  
174      if( !cache )  /* Return the public cache context if @is_pub is set
175          BUG( NULL );     the secre cache context otherwise. */
176      if (!c)  gpg_keycache_t
177          err = gpgme_keycache_find_key( cache, keyid, 0, r_key );  keycache_get_ctx (int is_pub)
178      else  {
179          err = gpgme_keycache_find_key2 (cache, keyid, 0, r_key, c);      return is_pub? pub : sec;
180      if( err )  }
181          return WPTERR_GENERAL;  
182      return 0;  
183  } /* get_key */  /* Get the GPG key with keyid @keyid from the cache. Return it
184       in @r_key on success. */
185    static int
186  static int  get_key_from_cache (const char *keyid, gpgme_key_t *r_key,
187  get_key2( const char * keyid, gpgme_key_t * r_key, int secret )                      struct keycache_s **c, int secret)
188  {  {
189      gpg_iobuf_t inp;      gpg_keycache_t cache;
190      char * p;      gpgme_error_t err;
191      int rc;      int mode = secret? KEYCACHE_PRV : KEYCACHE_PUB;
192    
193      p = get_gnupg_keyring (1, !NO_STRICT);      if (!keyid)
194      if( !p )          return WPTERR_GENERAL;
195          BUG( NULL );      if (r_key)
196            *r_key = NULL;
197      inp = gpg_iobuf_open( p );      cache = keycache_get_ctx (mode);
198      if( !inp ) {      if (!cache)
199          const char *s = winpt_strerror( WPTERR_FILE_OPEN );          BUG( NULL );
200          log_box( _("WinPT Error"), 0, "%s: %s", p, s );      if (!c)
201          free_if_alloc( p );          err = gpg_keycache_find_key (cache, keyid, 0, r_key);
202          return NULL;      else
203      }          err = gpg_keycache_find_key2 (cache, keyid, 0, r_key, c);
204      gpg_iobuf_ioctl( inp, 3, 1, NULL ); /* disable cache */      return err? WPTERR_GENERAL : 0;
205      rc = gpgme_getkey_bykeyid( inp, keyid, r_key );  }
206    
207      gpg_iobuf_close( inp );  
208      free_if_alloc( p );  /* Get GPG key with keyid @keyid directly from GPG and return
209      return rc;     it in @r_key on success. */
210  } /* get_key2 */  static int
211    get_key_directly (const char *keyid, gpgme_key_t *r_key, int secret)
212    {
213  int      gpgme_ctx_t ctx;
214  winpt_get_pubkey (const char *keyid, winpt_key_s *k)      gpgme_error_t err;
215  {  
216      int rc;      err = gpgme_new (&ctx);
217            if (err)
218      rc = get_key (keyid, &k->ctx, &k->ext, 0);          return WPTERR_GENERAL;
219      if (rc)      err = gpgme_get_key (ctx, keyid, r_key, secret);
220          return rc;      gpgme_release (ctx);
221      k->is_v3 = k->ctx->subkeys->pubkey_algo == GPGME_PK_RSA && strlen (k->ctx->subkeys->fpr) == 32;      return err? WPTERR_GENERAL : 0;
222      k->is_protected = k->ext->gloflags.is_protected;  }
223      k->keyid = k->ctx->subkeys->keyid;  
224      k->uid = k->ctx->uids->uid;  
225      return rc;  /* Search the public key with @keyid as the keyid in the cache and
226  }     return the item in @k. */
227    int
228    winpt_get_pubkey (const char *keyid, winpt_key_s *k)
229  int  {
230  winpt_get_seckey (const char *keyid, winpt_key_s *k)      int rc;
231  {      
232      int rc;      rc = get_key_from_cache (keyid, &k->ctx, &k->ext, 0);
233      rc = get_key (keyid, &k->ctx, &k->ext, 1);      if (rc)
234      if (rc)          return rc;
235          return rc;      k->is_v3 = k->ctx->subkeys->pubkey_algo == GPGME_PK_RSA &&
236      k->is_v3 = k->ctx->subkeys->pubkey_algo == GPGME_PK_RSA && strlen (k->ctx->subkeys->fpr) == 32;                  strlen (k->ctx->subkeys->fpr) == 32;
237      k->is_protected = k->ext->gloflags.is_protected;      k->is_protected = k->ext->gloflags.is_protected;
238      k->keyid = k->ctx->subkeys->keyid;      k->keyid = k->ctx->subkeys->keyid;
239      k->uid = k->ctx->uids->uid;      k->uid = k->ctx->uids->uid;
240      return rc;      return rc;
241  }  }
242    
243    
244  int  int
245  get_pubkey (const char *keyid, gpgme_key_t *ret_key)  winpt_get_seckey (const char *keyid, winpt_key_s *k)
246  {  {
247      int rc = 0;      int rc;
248        rc = get_key_from_cache (keyid, &k->ctx, &k->ext, 1);
249      if (pub && sec)      if (rc)
250          rc = get_key (keyid, ret_key, NULL, 0);          return rc;
251      else      k->is_v3 = k->ctx->subkeys->pubkey_algo == GPGME_PK_RSA &&
252          rc = get_key2 (keyid, ret_key, 0);                  strlen (k->ctx->subkeys->fpr) == 32;
253      return rc;      k->is_protected = k->ext->gloflags.is_protected;
254  } /* get_pubkey */      k->keyid = k->ctx->subkeys->keyid;
255        k->uid = k->ctx->uids->uid;
256        return rc;
257  int  }
258  get_seckey( const char *keyid, gpgme_key_t *ret_skey )  
259  {  
260      int rc = 0;  int
261    get_pubkey (const char *keyid, gpgme_key_t *ret_key)
262      if( pub && sec )  {
263          rc = get_key( keyid, ret_skey, NULL, 1 );      int rc;
264      else  
265          rc = get_key2( keyid, ret_skey, 1 );      if (pub && sec)
266      return rc;          rc = get_key_from_cache (keyid, ret_key, NULL, 0);
267  } /* get_seckey */      else
268            rc = get_key_directly (keyid, ret_key, 0);
269        return rc;
270  int  }
271  count_insecure_elgkeys (void)  
272  {  
273      gpgme_keycache_t pc;  int
274      gpgme_key_t key;  get_seckey (const char *keyid, gpgme_key_t *ret_skey)
275      int n=0;  {
276        int rc;
277      pc = keycache_get_ctx (1);  
278      if (!pc)      if (pub && sec)
279          BUG (0);          rc = get_key_from_cache (keyid, ret_skey, NULL, 1);
280      while (!gpgme_keycache_next_key (pc, 0, &key)) {      else
281          if (key->subkeys->pubkey_algo == GPGME_PK_ELG)          rc = get_key_directly (keyid, ret_skey, 1);
282              n++;      return rc;
283      }  }
284      gpgme_keycache_rewind (pc);  
285      return n;  
286  }  /* Search for insecure ElGamal keys and return the
287       number of founded keys. */
288    int
289    count_insecure_elgkeys (void)
290    {
291        gpg_keycache_t pc;
292        gpgme_key_t key;
293        int n=0;
294    
295        pc = keycache_get_ctx (1);
296        if (!pc)
297            BUG (0);
298        while (!gpg_keycache_next_key (pc, 0, &key)) {
299            if (key->subkeys->pubkey_algo == GPGME_PK_ELG)
300                n++;
301        }
302        gpg_keycache_rewind (pc);
303        return n;
304    }
305    
306    
307    
308    /* Map the signature summary in @sum to signature status table index.
309       Return value: index to table. */
310    static int
311    sigsum_to_index (gpgme_sigsum_t sum)
312    {
313        if ((sum & GPGME_SIGSUM_VALID) && (sum & GPGME_SIGSUM_KEY_REVOKED))
314            return 7;
315        if ((sum & GPGME_SIGSUM_VALID) && (sum & GPGME_SIGSUM_SIG_EXPIRED))
316            return 6;
317        if (sum & GPGME_SIGSUM_GREEN)
318            return 1;
319        else if (sum & GPGME_SIGSUM_RED)
320            return 2;
321        else if (sum & GPGME_SIGSUM_KEY_MISSING)
322            return 3;
323        return 0;
324    }
325    
326    
327    /* Return a humand readable description for the signature status @sum. */
328    const char*
329    get_gpg_sigstat (gpgme_sigsum_t sum)
330    {
331        const char *gpg_sigstat[] = {
332            _("Error during verification process."),
333            _("The signature is good."),
334            _("The signature is BAD!"),
335            _("The signature could not be checked due to a missing key."),
336            _("No valid OpenPGP signature."),
337            _("Signature Error"),
338            _("Good Signature (Expired Key)"),
339            _("Good Signature (Revoked Key)"),
340            NULL
341        };
342        const unsigned int mask = 8;
343    
344        return gpg_sigstat[sigsum_to_index (sum) % mask];
345    }
Legend:
Removed from v.23  
changed lines
  Added in v.109
[email protected]
 ViewVC Help
Powered by ViewVC 1.1.26