/[winpt]/trunk/Src/wptKeyCache.cpp
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revision 188 by twoaday, Wed Mar 22 12:39:02 2006 UTC revision 260 by twoaday, Wed Aug 16 10:01:30 2006 UTC
# Line 1  Line 1 
1  /* wptKeyCache.cpp- Caching for the pub- and the secring  /* wptKeyCache.cpp- Caching for the pub- and the secring
2   *      Copyright (C) 2001-2006 Timo Schulz   *      Copyright (C) 2001-2006 Timo Schulz
3   *   *
4   * This file is part of MyGPGME.   * This file is part of WinPT.
5   *   *
6   * MyGPGME is free software; you can redistribute it and/or modify   * WinPT is free software; you can redistribute it and/or modify
7   * it under the terms of the GNU General Public License as published by   * it under the terms of the GNU General Public License as published by
8   * the Free Software Foundation; either version 2 of the License, or   * the Free Software Foundation; either version 2 of the License, or
9   * (at your option) any later version.   * (at your option) any later version.
10   *   *
11   * MyGPGME 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   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License for more details.   * GNU General Public License for more details.
# Line 25  Line 25 
25  #include <windows.h>  #include <windows.h>
26  #include <stdio.h>  #include <stdio.h>
27  #include <string.h>  #include <string.h>
 #include <malloc.h>  
28  #include <ctype.h>  #include <ctype.h>
29  #include <assert.h>  #include <assert.h>
30  #include <gpgme.h>  #include <gpgme.h>
# Line 37  Line 36 
36  #include "wptW32API.h"  #include "wptW32API.h"
37  #include "wptGPG.h"  #include "wptGPG.h"
38  #include "wptTypes.h"  #include "wptTypes.h"
39    #include "wptCommonCtl.h"
40    #include "wptContext.h"
41    #include "wptKeyEdit.h"
42    #include "wptUTF8.h"
43    
44    
45    gpgme_error_t parse_keyserver_url (char **r_keyserver, unsigned short *r_port);
46    
47  /* Attribute list which holds the image data. */  /* Attribute list which holds the image data. */
48  struct attr_list_s {  struct attr_list_s {
49      struct attr_list_s *next;      struct attr_list_s *next;
# Line 50  struct attr_list_s { Line 55  struct attr_list_s {
55  typedef struct attr_list_s *attr_list_t;  typedef struct attr_list_s *attr_list_t;
56    
57    
58    /* XXX: convert it to an inline function and place it in a header file. */
59    static unsigned char*
60    safe_uchar_alloc (size_t n)
61    {
62        unsigned char *p = new unsigned char[n];
63        if (!p)
64            BUG (0);
65        return p;
66    }
67    
68    
69  /* Free attribute list @ctx. */  /* Free attribute list @ctx. */
70  void  void
71  free_attr_list (attr_list_t ctx)  free_attr_list (attr_list_t ctx)
72  {  {
73      attr_list_t n;      attr_list_t n;
74    
75      while (ctx) {      while (ctx) {
76          n = ctx->next;          n = ctx->next;
77          free (ctx->fpr);          free_if_alloc (ctx->fpr);
78          free (ctx->d);          free_if_alloc (ctx->d);
79            free_if_alloc (ctx);
80          ctx = n;          ctx = n;
81      }      }
82  }  }
# Line 82  parse_attr_list (FILE *fp, const BYTE *d Line 100  parse_attr_list (FILE *fp, const BYTE *d
100              continue;              continue;
101          buffer = buf+9+10;          buffer = buf+9+10;
102          pos = 0;          pos = 0;
103          c = (attr_list_t)calloc (1, sizeof *c);          c = new attr_list_s;
104          if (!c)          if (!c)
105              BUG (0);              BUG (0);
106            memset (c, 0, sizeof *c);
107    
108          p = strtok (buffer, " ");          p = strtok (buffer, " ");
109          while (p != NULL) {          while (p != NULL) {
110              switch (pos) {              switch (pos) {
111              case 0:              case 0:
112                  c->fpr = strdup (p);                  c->fpr = m_strdup (p);
113                  break;                  break;
114                                    
115              case 1:              case 1:
# Line 113  parse_attr_list (FILE *fp, const BYTE *d Line 133  parse_attr_list (FILE *fp, const BYTE *d
133                  ;                  ;
134              t->next = c;              t->next = c;
135          }          }
136          c->d = (unsigned char*)malloc (c->octets);          c->d = safe_uchar_alloc (c->octets);
         if (!c->d)  
             BUG (0);  
137          memcpy (c->d, data, c->octets);          memcpy (c->d, data, c->octets);
138          data += c->octets;          data += c->octets;
139          datlen -= c->octets;          datlen -= c->octets;
# Line 194  parse_secring (gpg_keycache_t cache, con Line 212  parse_secring (gpg_keycache_t cache, con
212                  goto next;                  goto next;
213              c->gloflags.is_protected = sk->is_protected;              c->gloflags.is_protected = sk->is_protected;
214              c->gloflags.divert_to_card = sk->protect.s2k.mode==1002? 1 : 0;              c->gloflags.divert_to_card = sk->protect.s2k.mode==1002? 1 : 0;
215              if (c->pubpart != NULL) {                  if (c->pubpart != NULL) {
216                  c->pubpart->gloflags.is_protected = sk->is_protected;                      c->pubpart->gloflags.is_protected = sk->is_protected;
217                  c->pubpart->gloflags.divert_to_card = sk->protect.s2k.mode==1002? 1 : 0;                  c->pubpart->gloflags.divert_to_card = sk->protect.s2k.mode==1002? 1 : 0;
218              }              }
219          }          }
# Line 219  keycache_update_photo (gpg_keycache_t ct Line 237  keycache_update_photo (gpg_keycache_t ct
237      gpg_keycache_find_key2 (ctx, fpr, 0, &key, &fnd);      gpg_keycache_find_key2 (ctx, fpr, 0, &key, &fnd);
238      if (!fnd)      if (!fnd)
239          return gpg_error (GPG_ERR_NOT_FOUND);          return gpg_error (GPG_ERR_NOT_FOUND);
240      safe_free (fnd->attrib.d);      free_if_alloc (fnd->attrib.d);
241      fnd->attrib.flags = dat->flags;      fnd->attrib.flags = dat->flags;
242      fnd->attrib.len = dat->octets;      fnd->attrib.len = dat->octets;
243      fnd->attrib.d = (unsigned char*)malloc (dat->octets);      fnd->attrib.d = safe_uchar_alloc (dat->octets);
     if (!fnd->attrib.d)  
         BUG (0);  
244      memcpy (fnd->attrib.d, dat->d, dat->octets);      memcpy (fnd->attrib.d, dat->d, dat->octets);
245      return 0;      return 0;
246  }  }
# Line 250  keycache_update_photos (gpg_keycache_t c Line 266  keycache_update_photos (gpg_keycache_t c
266  }  }
267    
268    
269    void
270    keycache_decode_uid (struct keycache_s *ctx)
271    {
272        gpgme_user_id_t u;
273        struct native_uid_s *n, *t;
274    
275        for (u = ctx->key->uids; u; u = u->next) {
276            n = new native_uid_s;
277            if (!n)
278                BUG (0);
279            memset (n, 0, sizeof *n);
280            if (is_8bit_string (u->uid)) {
281                n->malloced = 1;
282                n->uid = utf8_to_native (u->uid);
283                if (u->name != NULL)
284                    n->name = utf8_to_native (u->name);
285                if (u->email != NULL)
286                    n->email = m_strdup (u->email);
287                if (u->comment != NULL)
288                    n->comment = utf8_to_native (u->comment);
289            }
290            else {
291                n->malloced = 0;
292                n->uid = u->uid;
293                n->name = u->name;
294                n->comment = u->comment;
295                n->email = u->email;
296            }
297            n->signatures = u->signatures;
298            n->validity = u->validity;
299            n->revoked = u->revoked;
300            if (!ctx->uids)
301                ctx->uids = n;
302            else {
303                for (t = ctx->uids; t->next; t=t->next)
304                    ;
305                t->next = n;          
306            }
307        }
308    }
309    
310    
311    /* Store utf8 decoded user IDs in the code to avoid in-place decoding. */
312    static void
313    keycache_decode_uids (gpg_keycache_t ctx)
314    {
315        struct keycache_s *c;
316    
317        for (c = ctx->item; c; c = c->next)
318            keycache_decode_uid (c);
319    }
320    
321    
322    static void
323    free_native_uids (struct native_uid_s **r_n)
324    {
325        struct native_uid_s *t;
326        struct native_uid_s *n = *r_n;
327    
328        while (n != NULL) {
329            t = n->next;
330            if (n->malloced) {
331                free_if_alloc (n->uid);
332                free_if_alloc (n->name);
333                free_if_alloc (n->comment);
334                free_if_alloc (n->email);
335            }
336            free_if_alloc (n);
337            n = t;
338        }
339        *r_n = NULL;
340    }
341    
342    
343    
344  /* Merge the information from the keyrings into the key cache structure. */  /* Merge the information from the keyrings into the key cache structure. */
345  gpgme_error_t  static gpgme_error_t
346  keycache_prepare2 (gpg_keycache_t ctx, const char *kid,  keycache_prepare2 (gpg_keycache_t ctx, const char *kid,
347                     const char *pubring, const char *secring)                     const char *pubring, const char *secring)
348  {  {
# Line 260  keycache_prepare2 (gpg_keycache_t ctx, c Line 351  keycache_prepare2 (gpg_keycache_t ctx, c
351      gpg_iobuf_t inp;      gpg_iobuf_t inp;
352      PACKET *pkt;      PACKET *pkt;
353      struct keycache_s *c;      struct keycache_s *c;
354      const byte *sym_prefs;      const BYTE *sym_prefs;
355      char keyid[16+1];      char keyid[16+1];
356      int key_seen = 0;      int key_seen = 0;
357      size_t nsym =0;      size_t nsym =0;
# Line 284  keycache_prepare2 (gpg_keycache_t ctx, c Line 375  keycache_prepare2 (gpg_keycache_t ctx, c
375              strcpy (keyid, "");              strcpy (keyid, "");
376              key_seen = 1;              key_seen = 1;
377          }          }
   
378          if (pkt->pkttype == PKT_SIGNATURE &&          if (pkt->pkttype == PKT_SIGNATURE &&
379              pkt->pkt.signature->sig_class == 0x1F) {              pkt->pkt.signature->sig_class == 0x1F) {
380              if (pkt->pkt.signature->numrevkeys == 0)              if (pkt->pkt.signature->numrevkeys == 0)
# Line 298  keycache_prepare2 (gpg_keycache_t ctx, c Line 388  keycache_prepare2 (gpg_keycache_t ctx, c
388                  goto next;                  goto next;
389              c->gloflags.has_desig_rev = 1;              c->gloflags.has_desig_rev = 1;
390          }          }
391          if (pkt->pkttype == PKT_SIGNATURE && key_seen == 1 ) {          if (pkt->pkttype == PKT_SIGNATURE && key_seen == 1 && c != NULL) {
392              sym_prefs = gpg_parse_sig_subpkt (pkt->pkt.signature->hashed,              sym_prefs = gpg_parse_sig_subpkt (pkt->pkt.signature->hashed,
393                                                SIGSUBPKT_PREF_SYM, &nsym);                                                SIGSUBPKT_PREF_SYM, &nsym);
394              if (!sym_prefs)              if (!sym_prefs)
# Line 308  keycache_prepare2 (gpg_keycache_t ctx, c Line 398  keycache_prepare2 (gpg_keycache_t ctx, c
398              if (kid && strcmp (kid, keyid) != 0)              if (kid && strcmp (kid, keyid) != 0)
399                  goto next;                  goto next;
400              err = gpg_keycache_find_key2 (ctx, keyid, 0, &key, &c);              err = gpg_keycache_find_key2 (ctx, keyid, 0, &key, &c);
401              if (err)              if (err || !c)
402                    goto next;
403                if (c->sym_prefs) // only use the prefs from the primary uid.
404                  goto next;                  goto next;
405              else if (nsym > 0) {              else if (nsym > 0) {
406                  c->sym_prefs = (unsigned char*)calloc (1, nsym+1);                  c->sym_prefs = safe_uchar_alloc (nsym+1);
407                  if (!c->sym_prefs)                  memset (c->sym_prefs, 0, nsym+1);
                     BUG (0);  
408                  memcpy (c->sym_prefs, sym_prefs, nsym);                  memcpy (c->sym_prefs, sym_prefs, nsym);
409              }              }
410          }          }
# Line 353  gpg_keycache_new (gpg_keycache_t *r_ctx) Line 444  gpg_keycache_new (gpg_keycache_t *r_ctx)
444            
445      if (!r_ctx)      if (!r_ctx)
446          return gpg_error (GPG_ERR_INV_ARG);          return gpg_error (GPG_ERR_INV_ARG);
447      ctx = (gpg_keycache_t)calloc (1, sizeof *ctx);      ctx = new gpg_keycache_s;    
448      if (!ctx)      if (!ctx)
449          BUG (0);          BUG (0);
450        memset (ctx, 0, sizeof *ctx);
451      ctx->secret = 0;      ctx->secret = 0;
452      ctx->pos = 0;      ctx->pos = 0;
453      *r_ctx = ctx;      *r_ctx = ctx;
# Line 363  gpg_keycache_new (gpg_keycache_t *r_ctx) Line 455  gpg_keycache_new (gpg_keycache_t *r_ctx)
455  }  }
456    
457    
458    void
459    gpg_keycache_item_release (struct keycache_s *c)
460    {
461        if (c->key)
462            gpgme_key_release (c->key);    
463        c->key = NULL;      
464        if (c->rev != NULL)    
465            gpg_desig_rev_release (c->rev);
466        c->rev = NULL;
467        free_if_alloc (c->pref_keyserver);
468        free_if_alloc (c->sym_prefs);
469        free_if_alloc (c->attrib.d);
470        free_if_alloc (c->card_type);
471        free_native_uids (&c->uids);
472        free_if_alloc (c);
473    }
474    
475    
476  /* Release keycache object @ctx. */  /* Release keycache object @ctx. */
477  void  void
478  gpg_keycache_release (gpg_keycache_t ctx)  gpg_keycache_release (gpg_keycache_t ctx)
# Line 374  gpg_keycache_release (gpg_keycache_t ctx Line 484  gpg_keycache_release (gpg_keycache_t ctx
484    
485      for (c = ctx->item; c; c = c2) {      for (c = ctx->item; c; c = c2) {
486          c2 = c->next;          c2 = c->next;
487          gpgme_key_release (c->key);          gpg_keycache_item_release (c);
         c->key = NULL;  
         safe_free (c->pref_keyserver);  
         safe_free (c->sym_prefs);  
         safe_free (c->attrib.d);  
         safe_free (c->card_type);  
         free (c);  
488      }      }
489      safe_free (ctx);      free_if_alloc (ctx);
490  }  }
491    
492    
# Line 414  gpg_keycache_add_key (gpg_keycache_t ctx Line 518  gpg_keycache_add_key (gpg_keycache_t ctx
518      if (!ctx)      if (!ctx)
519          return gpg_error (GPG_ERR_INV_ARG);          return gpg_error (GPG_ERR_INV_ARG);
520            
521      c = (struct keycache_s*)calloc (1, sizeof *c);      c = new keycache_s;
522      if (!c)      if (!c)
523          BUG (0);          BUG (0);
524        memset (c, 0, sizeof *c);
525      c->gloflags.is_protected = 1; /*default: assume protection. */      c->gloflags.is_protected = 1; /*default: assume protection. */
526      c->key = key;      c->key = key;
527      if (!ctx->item)      if (!ctx->item)
# Line 530  gpg_keycache_next_updated_key (gpg_keyca Line 635  gpg_keycache_next_updated_key (gpg_keyca
635          if (c->flags != 0) {          if (c->flags != 0) {
636              *r_status = c->flags;              *r_status = c->flags;
637              *r_obj = c;              *r_obj = c;
638              c->flags = 0;              c->flags = 0; /* reset update flag. */
639              return 0;              return 0;
640          }          }
641      }      }
# Line 538  gpg_keycache_next_updated_key (gpg_keyca Line 643  gpg_keycache_next_updated_key (gpg_keyca
643  }  }
644    
645    
646    /* Helper to retrieve a GPG key. */
647    static gpgme_error_t
648    get_gpg_key (const char *keyid, int is_sec, gpgme_key_t *r_key)
649    {
650        gpgme_ctx_t ctx;
651        gpgme_error_t err;
652    
653        err = gpgme_new (&ctx);
654        if (err)
655            return err;
656        gpgme_set_keylist_mode  (ctx, GPGME_KEYLIST_MODE_SIGS);
657        err = gpgme_get_key (ctx, keyid, r_key, is_sec);
658        gpgme_release (ctx);
659        return err;
660    }
661    
662    
663    /* Fetch a key directly from gpg but without adding
664       it to the key cache. Caller must free @r_ctx. */
665    gpgme_error_t
666    gpg_keycache_fetch_key (const char *keyid, int is_sec,
667                            gpgme_key_t *r_key, struct keycache_s **r_c)
668    {
669        gpgme_error_t err;
670        gpgme_key_t key;
671        struct keycache_s *c;
672    
673        *r_key = NULL;
674        *r_c = NULL;
675        err = get_gpg_key (keyid, is_sec, &key);
676        if (err)
677            return err;
678    
679        c = new keycache_s;
680        if (!c)
681            BUG (0);
682        memset (c, 0, sizeof *c);
683        c->gloflags.is_protected = 1; /*default: assume protection. */
684        c->key = key;    
685        keycache_decode_uid (c);
686        *r_key = key;
687        *r_c = c;
688        return 0;
689    }
690    
691    
692    /* Update the key with the keyid @key in the key cache.
693       If the key does not exist, it is added otherwise all
694       parts are first freed and then replaced with the updated data. */
695  gpgme_error_t  gpgme_error_t
696  gpg_keycache_update_key (gpg_keycache_t ctx, int is_sec,  gpg_keycache_update_key (gpg_keycache_t ctx, int is_sec,
697                           void *opaque, const char *keyid)                           void *opaque, const char *keyid)
698  {  {    
     struct keycache_s *c = NULL, *c_new=NULL;  
699      gpgme_key_t key=NULL, fndkey=NULL;      gpgme_key_t key=NULL, fndkey=NULL;
700      gpgme_error_t err;      gpgme_error_t err;
701      gpgme_ctx_t gctx;      struct keycache_s *c = NULL, *c_new=NULL;
702      gpg_keycache_t pub = (gpg_keycache_t)opaque;      gpg_keycache_t pub = (gpg_keycache_t)opaque;
703    
704      err = gpgme_new (&gctx);      err = get_gpg_key (keyid, is_sec, &key);
     if (err)  
         return err;  
     gpgme_set_keylist_mode  (gctx, GPGME_KEYLIST_MODE_SIGS);  
     err = gpgme_get_key (gctx, keyid, &key, is_sec);  
     gpgme_release (gctx);  
705      if (err)      if (err)
706          return err;          return err;
707      err = gpg_keycache_find_key2 (ctx, keyid, 0, &fndkey, &c);      err = gpg_keycache_find_key2 (ctx, keyid, 0, &fndkey, &c);
# Line 585  gpg_keycache_update_key (gpg_keycache_t Line 732  gpg_keycache_update_key (gpg_keycache_t
732                  c->gloflags.divert_to_card = c_new->gloflags.divert_to_card;                  c->gloflags.divert_to_card = c_new->gloflags.divert_to_card;
733              }              }
734          }          }
735          if (c)          if (c != NULL)
736              c->flags = KC_FLAG_ADD;              c->flags = KC_FLAG_ADD;
737      }      }
738    
739        /* refresh utf8 user ID list. */
740        if (c != NULL && c->key) {
741            free_native_uids (&c->uids);
742            keycache_decode_uid (c);
743        }
744    
745      return 0;      return 0;
746  }  }
747    
# Line 608  gpg_keycache_delete_key (gpg_keycache_t Line 762  gpg_keycache_delete_key (gpg_keycache_t
762          return rc;          return rc;
763            
764      c = ctx->item;      c = ctx->item;
765      if (c->next == NULL) {      if (!c) /* empty */
766          gpgme_key_release (itm->key);          return 0;
767          safe_free (itm);      else if (c->next == NULL) {
768            if (itm->key)
769                gpgme_key_release (itm->key);
770            itm->key = NULL;
771            free_if_alloc (itm);
772            /* the cache has no other items, so we set the context to NULL
773               to indicate that the entire cache is empty. */
774          ctx->item = NULL;          ctx->item = NULL;
775      }      }
776      else {      else {
# Line 620  gpg_keycache_delete_key (gpg_keycache_t Line 780  gpg_keycache_delete_key (gpg_keycache_t
780          }          }
781          assert (c != NULL); /* XXX: sometimes access violation. */          assert (c != NULL); /* XXX: sometimes access violation. */
782          c->next = c->next->next;          c->next = c->next->next;
783          gpgme_key_release (itm->key);          if (itm->key)
784          safe_free (itm);              gpgme_key_release (itm->key);
785            itm->key = NULL;
786            free_if_alloc (itm);
787      }      }
788      return 0;      return 0;
789  }  }
# Line 645  gpg_keycache_init (gpg_keycache_t ctx, c Line 807  gpg_keycache_init (gpg_keycache_t ctx, c
807      if (err)      if (err)
808          return err;          return err;
809    
810        /* XXX: GPGME_KEYLIST_MODE_SIG_NOTATIONS causes an internal error! */
811      gpgme_set_keylist_mode  (c, GPGME_KEYLIST_MODE_SIGS);      gpgme_set_keylist_mode  (c, GPGME_KEYLIST_MODE_SIGS);
812      err = gpgme_op_keylist_start (c, pattern, secret);      err = gpgme_op_keylist_start (c, pattern, secret);
813      while(!err) {      while(!err) {
# Line 658  gpg_keycache_init (gpg_keycache_t ctx, c Line 821  gpg_keycache_init (gpg_keycache_t ctx, c
821      if (gpgme_err_code (err) == GPG_ERR_EOF)      if (gpgme_err_code (err) == GPG_ERR_EOF)
822          err = gpg_error (GPG_ERR_NO_ERROR);          err = gpg_error (GPG_ERR_NO_ERROR);
823      keycache_update_photos (ctx);      keycache_update_photos (ctx);
824      /* XXX: make sure the progress dialog is closed. */      keycache_decode_uids (ctx);
825      gpgme_op_keylist_end (c);      gpgme_op_keylist_end (c);
826      gpgme_release (c);      gpgme_release (c);
827      return err;      return err;
828  }  }
829    
830    
831  /* XXX: kludge to see if the key is stored on a card. */  /* Return 1 if we can assume that the actual private key is
832       stored on a smart card. This is not bullet proof, but the
833       card provides 3 keys (RSA) and each key for a different purpose. */
834  static int  static int
835  key_divert_to_card (gpgme_key_t key)  key_divert_to_card (gpgme_key_t key)
836  {  {
837      gpgme_subkey_t k;      gpgme_subkey_t k;
838      int n=0, n_alg=0, can_auth = 0;      int n=0;
839        int can_auth = 0, can_encr = 0;
840    
841      for (k = key->subkeys; k; k = k->next) {      for (k = key->subkeys; k; k = k->next) {
842          n++;          n++;
843          if (k->pubkey_algo == GPGME_PK_RSA && k->length == 1024)          if (k->pubkey_algo != GPGME_PK_RSA || k->length != 1024) {
844              n_alg++;              return 0;
845                break;
846            }
847          if (k->can_authenticate)          if (k->can_authenticate)
848              can_auth++;              can_auth++;
849            if (k->can_encrypt)
850                can_encr++;
851      }      }
852      if (n == 3 && n_alg == 3 && can_auth == 1)      if (n >= 3 && can_auth >= 1 && can_encr >= 1)
853          return 1;          return 1;
854      return 0;      return 0;
855  }  }
# Line 693  copy_uid_prefs (const unsigned char *pre Line 863  copy_uid_prefs (const unsigned char *pre
863    
864      while (prefs[pos] != 0)      while (prefs[pos] != 0)
865          pos++;          pos++;
866      p = (unsigned char*)calloc (1, pos+1);      p = safe_uchar_alloc (pos+1);
867      if (!p)      memset (p, 0, pos+1);
         BUG (0);  
868      memcpy (p, prefs, pos);      memcpy (p, prefs, pos);
869      return p;      return p;
870  }  }
871    
872    
873    /* Sync the secret and the public key cache information. */
874  gpgme_error_t  gpgme_error_t
875  gpg_keycache_sync (gpg_keycache_t pub, gpg_keycache_t sec)  gpg_keycache_sync (gpg_keycache_t pub, gpg_keycache_t sec)
876  {  {
# Line 710  gpg_keycache_sync (gpg_keycache_t pub, g Line 880  gpg_keycache_sync (gpg_keycache_t pub, g
880      if (!pub || !sec)      if (!pub || !sec)
881          return gpg_error (GPG_ERR_INV_ARG);          return gpg_error (GPG_ERR_INV_ARG);
882            
883      for (c=sec->item; c; c=c->next) {        for (c=sec->item; c; c=c->next) {
884          if (!gpg_keycache_find_key2 (pub, c->key->subkeys->keyid, 0, &key, &c_sec)) {          if (!gpg_keycache_find_key2 (pub, c->key->subkeys->keyid, 0,
885                                         &key, &c_sec)) {
886              c_sec->gloflags.is_protected = c->gloflags.is_protected;              c_sec->gloflags.is_protected = c->gloflags.is_protected;
887              c_sec->gloflags.divert_to_card = c->gloflags.divert_to_card;              c_sec->gloflags.divert_to_card = c->gloflags.divert_to_card;
888              if (!c->gloflags.divert_to_card)              if (!c->gloflags.divert_to_card)
# Line 768  keycache_next_key (gpg_keycache_t ctx, i Line 939  keycache_next_key (gpg_keycache_t ctx, i
939      }      }
940      if (ctx->tmp->flags != 0)      if (ctx->tmp->flags != 0)
941          ctx->tmp->flags = 0; /* reset the 'updated' status. */          ctx->tmp->flags = 0; /* reset the 'updated' status. */
942    
943      /* it might be possible there is no public key. */      /* it might be possible there is no public key. */
944      if (flags && ctx->tmp->pubpart == NULL)      if (flags && ctx->tmp->pubpart == NULL)
945          flags = 0;          flags = 0;
946      *r_key = flags? ctx->tmp->pubpart->key : ctx->tmp->key;      *r_key = flags? ctx->tmp->pubpart->key : ctx->tmp->key;
947      *c = ctx->tmp = ctx->tmp->next;      *c = ctx->tmp;
948        ctx->tmp = ctx->tmp->next;
949      ctx->pos++;      ctx->pos++;
950    
951      return 0;      return 0;
# Line 786  gpgme_error_t Line 959  gpgme_error_t
959  gpg_keycache_next_key (gpg_keycache_t ctx, int flags, gpgme_key_t *r_key)  gpg_keycache_next_key (gpg_keycache_t ctx, int flags, gpgme_key_t *r_key)
960  {  {
961      struct keycache_s *c=NULL;      struct keycache_s *c=NULL;
962      gpgme_error_t err = 0;      gpgme_error_t err;
963    
964      err = keycache_next_key (ctx, flags, &c, r_key);      err = keycache_next_key (ctx, flags, &c, r_key);
965      return err;      return err;
966  }  }
967    
968    
969    gpgme_error_t
970    gpg_keycache_next_key2 (gpg_keycache_t ctx, int flags,
971                            struct keycache_s **c, gpgme_key_t *r_key)
972    {
973        return keycache_next_key (ctx, flags, c, r_key);
974    }
975    
976    
977  /* Search for a key with the pattern @pattern and mark  /* Search for a key with the pattern @pattern and mark
978     this key as the default signing key if found.     this key as the default signing key if found.
979     Return value: 0 on success. */     Return value: 0 on success. */
# Line 839  static gpgme_error_t Line 1020  static gpgme_error_t
1020  decode_subpacket (const char *subpkt_data, int *type,  decode_subpacket (const char *subpkt_data, int *type,
1021                    char **out, WORD *outlen)                    char **out, WORD *outlen)
1022  {  {
1023      char tmp[128], *p = tmp, *val;      char tmp[128], *val;
1024      char *enc = NULL;      char *enc = NULL;      
1025      size_t pos = 0, i=0;      size_t pos = 0;
1026    
1027      /* example: spk:24:1:21:http%3A//subkeys.pgp.de */      /* example: spk:24:1:21:http%3A//subkeys.pgp.de */
1028      *outlen = 0;      *outlen = 0;
# Line 850  decode_subpacket (const char *subpkt_dat Line 1031  decode_subpacket (const char *subpkt_dat
1031      if (strncmp (subpkt_data, "spk:", 4))      if (strncmp (subpkt_data, "spk:", 4))
1032          return gpg_error (GPG_ERR_NO_DATA);          return gpg_error (GPG_ERR_NO_DATA);
1033    
1034      strncpy (tmp, subpkt_data, 62);      /* XXX: do not use static buffer sizes. */
1035        strncpy (tmp, subpkt_data, DIM (tmp)-4);
1036      val = strtok (tmp, ":");      val = strtok (tmp, ":");
1037      while (val != NULL) {      while (val != NULL) {
1038          switch (pos++) {          switch (pos++) {
# Line 870  decode_subpacket (const char *subpkt_dat Line 1052  decode_subpacket (const char *subpkt_dat
1052              break;              break;
1053    
1054          case 4:          case 4:
1055              enc = strdup (val);              enc = m_strdup (val);
1056              break;              break;
1057          }          }
1058          val = strtok (NULL, ":");          val = strtok (NULL, ":");
1059      }      }
1060      if (!enc)      if (!enc)
1061          return gpg_error (GPG_ERR_NO_DATA);;          return gpg_error (GPG_ERR_NO_DATA);
1062      *out = (char*)calloc (1, strlen (enc)+1);      unhexify_buffer (enc, out);
1063      if (!*out)      free_if_alloc (enc);
         BUG (0);  
     for (pos = 0; pos < strlen (enc); pos++) {  
         if (enc[pos] == '%' && enc[pos+1] == '%')  
             (*out)[i++] = '%';  
         else if (enc[pos] == '%') {  
             char temp[3];  
             temp[0] = enc[++pos];  
             temp[1] = enc[++pos];  
             temp[2] = 0;  
             (*out)[i++] = (char)strtoul (temp, NULL, 16);  
         }  
         else  
             (*out)[i++] = enc[pos];  
     }  
     (*out)[i] = 0;  
     free (enc);  
1064      return 0;      return 0;
1065  }  }
1066    
# Line 913  gpg_keycache_update_attr (struct keycach Line 1079  gpg_keycache_update_attr (struct keycach
1079      case KC_ATTR_PREFSYM:      case KC_ATTR_PREFSYM:
1080          if (!force && item->sym_prefs)          if (!force && item->sym_prefs)
1081              break;              break;
1082          safe_free (item->sym_prefs);          free_if_alloc (item->sym_prefs);
1083          err = gpg_find_key_subpacket (item->key->subkeys->keyid+8, attr, &val);          err = gpg_find_key_subpacket (item->key->subkeys->keyid+8, attr, &val);
1084          if (!err && val != NULL)          if (!err && val != NULL)
1085              err = decode_subpacket (val, NULL, (char**)&item->sym_prefs, &n);              err = decode_subpacket (val, NULL, (char**)&item->sym_prefs, &n);
# Line 922  gpg_keycache_update_attr (struct keycach Line 1088  gpg_keycache_update_attr (struct keycach
1088      case KC_ATTR_PREFKSERV:      case KC_ATTR_PREFKSERV:
1089          if (!force && item->pref_keyserver)          if (!force && item->pref_keyserver)
1090              break;              break;
1091          safe_free (item->pref_keyserver);          free_if_alloc (item->pref_keyserver);
1092          err = gpg_find_key_subpacket (item->key->subkeys->keyid+8, attr, &val);          err = gpg_find_key_subpacket (item->key->subkeys->keyid+8, attr, &val);
1093          if (!err && val != NULL)          if (!err && val != NULL)
1094              err = decode_subpacket (val, NULL, &item->pref_keyserver, &n);              err = decode_subpacket (val, NULL, &item->pref_keyserver, &n);
1095            if (!err && item->pref_keyserver)
1096                err = parse_keyserver_url (&item->pref_keyserver,
1097                                           &item->pref_keyserver_port);
1098          break;          break;
1099      }      }
1100      safe_free (val);      safe_free (val);
1101      return err;      return err;
1102  }  }
   
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