| 1 |
/* wptKeyCache.cpp- Caching for the pub- and the secring |
| 2 |
* Copyright (C) 2001-2005 Timo Schulz |
| 3 |
* |
| 4 |
* This file is part of MyGPGME. |
| 5 |
* |
| 6 |
* MyGPGME is free software; you can redistribute it and/or modify |
| 7 |
* 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 |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* MyGPGME 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 |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
| 19 |
*/ |
| 20 |
#include <windows.h> |
| 21 |
#include <stdio.h> |
| 22 |
#include <string.h> |
| 23 |
#include <malloc.h> |
| 24 |
#include <ctype.h> |
| 25 |
#include <assert.h> |
| 26 |
|
| 27 |
#include "w32gpgme.h" |
| 28 |
#include "openpgp.h" |
| 29 |
#include "wptNLS.h" |
| 30 |
#include "wptErrors.h" |
| 31 |
|
| 32 |
|
| 33 |
/* convert a binary buffer into its hex representation. */ |
| 34 |
static void |
| 35 |
buffer_to_string (char *dst, size_t dlen, const byte *buf, size_t nbytes) |
| 36 |
{ |
| 37 |
char dig[3]; |
| 38 |
size_t i; |
| 39 |
|
| 40 |
memset (dst, 0, dlen); |
| 41 |
for (i = 0; i < nbytes && dlen > 0; i++) { |
| 42 |
sprintf (dig, "%02X", buf[i]); |
| 43 |
strcat (dst, dig); |
| 44 |
dlen -= 2; |
| 45 |
} |
| 46 |
} |
| 47 |
|
| 48 |
|
| 49 |
/* Parse the secret keyring and retrieve some additional information |
| 50 |
for each key which was found. */ |
| 51 |
static void |
| 52 |
parse_secring (gpg_keycache_t cache, const char *kid, const char *secring) |
| 53 |
{ |
| 54 |
PACKET *pkt = (PACKET*)calloc (1, sizeof *pkt); |
| 55 |
PKT_secret_key *sk; |
| 56 |
gpg_iobuf_t inp; |
| 57 |
gpgme_error_t err; |
| 58 |
gpgme_key_t key; |
| 59 |
struct keycache_s *c=NULL; |
| 60 |
char keyid[16+1]; |
| 61 |
|
| 62 |
inp = gpg_iobuf_open (secring); |
| 63 |
if (!inp) { |
| 64 |
safe_free (pkt); |
| 65 |
return; |
| 66 |
} |
| 67 |
gpg_iobuf_ioctl (inp, 3, 1, NULL); |
| 68 |
gpg_init_packet (pkt); |
| 69 |
while (gpg_parse_packet (inp, pkt) != -1) { |
| 70 |
if (pkt->pkttype == PKT_SECRET_KEY) { |
| 71 |
sk = pkt->pkt.secret_key; |
| 72 |
/* XXX: key IDs of card public keys are wrong! */ |
| 73 |
_snprintf (keyid, sizeof (keyid)-1, "%08lX", |
| 74 |
gpg_keyid_from_sk (sk, NULL)); |
| 75 |
if (kid && strcmp (kid, keyid) != 0) |
| 76 |
goto next; |
| 77 |
err = gpg_keycache_find_key2 (cache, keyid, 0, &key, &c); |
| 78 |
if (err) |
| 79 |
goto next; |
| 80 |
c->gloflags.is_protected = sk->is_protected; |
| 81 |
c->gloflags.divert_to_card = sk->protect.s2k.mode==1002? 1 : 0; |
| 82 |
if (c->pubpart != NULL) { |
| 83 |
c->pubpart->gloflags.is_protected = sk->is_protected; |
| 84 |
c->pubpart->gloflags.divert_to_card = sk->protect.s2k.mode==1002? 1 : 0; |
| 85 |
} |
| 86 |
} |
| 87 |
next: |
| 88 |
gpg_free_packet (pkt); |
| 89 |
gpg_init_packet (pkt); |
| 90 |
} |
| 91 |
safe_free (pkt); |
| 92 |
gpg_iobuf_close (inp); |
| 93 |
} |
| 94 |
|
| 95 |
|
| 96 |
/* Merge the information from the keyrings into the key cache structure. */ |
| 97 |
gpgme_error_t |
| 98 |
keycache_prepare2 (gpg_keycache_t ctx, const char *kid, |
| 99 |
const char *pubring, const char *secring) |
| 100 |
{ |
| 101 |
gpgme_error_t err; |
| 102 |
gpgme_key_t key = NULL; |
| 103 |
gpg_iobuf_t inp; |
| 104 |
PACKET *pkt = (PACKET*)calloc (1, sizeof * pkt); |
| 105 |
struct keycache_s *c; |
| 106 |
const byte *sym_prefs; |
| 107 |
char keyid[16+1], *id = NULL; |
| 108 |
int key_seen = 0; |
| 109 |
size_t nbytes = 0, nsym =0; |
| 110 |
|
| 111 |
if (secring) { |
| 112 |
parse_secring (ctx, kid, secring); |
| 113 |
if (!pubring) { |
| 114 |
safe_free(pkt); |
| 115 |
return 0; |
| 116 |
} |
| 117 |
} |
| 118 |
inp = gpg_iobuf_open (pubring); |
| 119 |
if (!inp) { |
| 120 |
safe_free( pkt ); |
| 121 |
return gpg_error (GPG_ERR_KEYRING_OPEN); |
| 122 |
} |
| 123 |
gpg_iobuf_ioctl( inp, 3, 1, NULL ); /* disable cache */ |
| 124 |
|
| 125 |
gpg_init_packet( pkt ); |
| 126 |
while (gpg_parse_packet (inp, pkt) != -1) { |
| 127 |
if (pkt->pkttype == PKT_PUBLIC_KEY) { |
| 128 |
strcpy (keyid, ""); |
| 129 |
key_seen = 1; |
| 130 |
} |
| 131 |
|
| 132 |
if (pkt->pkttype == PKT_SIGNATURE && pkt->pkt.signature->sig_class == 0x1F) { |
| 133 |
if (pkt->pkt.signature->numrevkeys == 0) |
| 134 |
goto next; |
| 135 |
_snprintf (keyid, sizeof keyid -1, "%08X", pkt->pkt.signature->keyid[1]); |
| 136 |
if (kid && strcmp (kid, keyid) != 0) |
| 137 |
goto next; |
| 138 |
err = gpg_keycache_find_key2 (ctx, keyid, 0, &key, &c); |
| 139 |
if (err) |
| 140 |
goto next; |
| 141 |
c->gloflags.has_desig_rev = 1; |
| 142 |
} |
| 143 |
if (pkt->pkttype == PKT_SIGNATURE && key_seen == 1 ) { |
| 144 |
sym_prefs=gpg_parse_sig_subpkt (pkt->pkt.signature->hashed, |
| 145 |
SIGSUBPKT_PREF_SYM, &nsym); |
| 146 |
if (sym_prefs == NULL) |
| 147 |
goto next; |
| 148 |
_snprintf (keyid, sizeof keyid - 1, "%08X", pkt->pkt.signature->keyid[1]); |
| 149 |
if (kid && strcmp (kid, keyid) != 0) |
| 150 |
goto next; |
| 151 |
err = gpg_keycache_find_key2 (ctx, keyid, 0, &key, &c); |
| 152 |
if (err) |
| 153 |
goto next; |
| 154 |
else if (nsym > 0) { |
| 155 |
c->sym_prefs = (unsigned char*)calloc (1, nsym+1); |
| 156 |
if (!c->sym_prefs) |
| 157 |
return gpg_error (GPG_ERR_ENOMEM); |
| 158 |
memcpy (c->sym_prefs, sym_prefs, nsym); |
| 159 |
} |
| 160 |
} |
| 161 |
if (pkt->pkttype == PKT_USER_ID) { |
| 162 |
if (id) |
| 163 |
free (id); |
| 164 |
id = strdup (pkt->pkt.user_id->name); |
| 165 |
if (!id) { |
| 166 |
err = gpg_error (GPG_ERR_ENOMEM); |
| 167 |
goto fail; |
| 168 |
} |
| 169 |
} |
| 170 |
if ((pkt->pkttype == PKT_USER_ID || pkt->pkttype == PKT_ATTRIBUTE) |
| 171 |
&& pkt->pkt.user_id->attrib_data && key) { |
| 172 |
PKT_user_id *id = pkt->pkt.user_id; |
| 173 |
c->attrib.used = 1; |
| 174 |
c->attrib.len = id->attrib_len; |
| 175 |
c->attrib.d = (unsigned char*)calloc (1, id->attrib_len + 1); |
| 176 |
if (!c->attrib.d) { |
| 177 |
err = gpg_error (GPG_ERR_ENOMEM); |
| 178 |
goto fail; |
| 179 |
} |
| 180 |
memcpy (c->attrib.d, id->attrib_data, id->attrib_len); |
| 181 |
key = NULL; |
| 182 |
c = NULL; |
| 183 |
} |
| 184 |
next: |
| 185 |
gpg_free_packet (pkt); |
| 186 |
gpg_init_packet(pkt); |
| 187 |
} |
| 188 |
|
| 189 |
fail: |
| 190 |
safe_free (id); |
| 191 |
safe_free (pkt); |
| 192 |
gpg_iobuf_close (inp); |
| 193 |
return err; |
| 194 |
} |
| 195 |
|
| 196 |
|
| 197 |
gpgme_error_t |
| 198 |
gpg_keycache_prepare (gpg_keycache_t ctx, const char *pubr, const char *secr) |
| 199 |
{ |
| 200 |
return keycache_prepare2 (ctx, NULL, pubr, secr); |
| 201 |
} |
| 202 |
|
| 203 |
gpgme_error_t |
| 204 |
gpg_keycache_prepare_single (gpg_keycache_t ctx, const char *keyid, |
| 205 |
const char *pubr, const char *secr) |
| 206 |
{ |
| 207 |
if (!strncmp (keyid, "0x", 2)) |
| 208 |
keyid += 2; |
| 209 |
return keycache_prepare2 (ctx, keyid, pubr, secr); |
| 210 |
} |
| 211 |
|
| 212 |
|
| 213 |
/* Create new keycache object and return it in @r_ctx. |
| 214 |
Return value: 0 on success. */ |
| 215 |
gpgme_error_t |
| 216 |
gpg_keycache_new (gpg_keycache_t *r_ctx) |
| 217 |
{ |
| 218 |
gpg_keycache_t ctx; |
| 219 |
|
| 220 |
if (!r_ctx) |
| 221 |
return gpg_error (GPG_ERR_INV_ARG); |
| 222 |
ctx = (gpg_keycache_t)calloc (1, sizeof *ctx); |
| 223 |
if (!ctx) |
| 224 |
return gpg_error (GPG_ERR_ENOMEM); |
| 225 |
ctx->secret = 0; |
| 226 |
ctx->pos = 0; |
| 227 |
*r_ctx = ctx; |
| 228 |
return 0; |
| 229 |
} |
| 230 |
|
| 231 |
|
| 232 |
/* Release keycache object @ctx. */ |
| 233 |
void |
| 234 |
gpg_keycache_release (gpg_keycache_t ctx) |
| 235 |
{ |
| 236 |
struct keycache_s *c, *c2; |
| 237 |
|
| 238 |
if (!ctx) |
| 239 |
return; |
| 240 |
|
| 241 |
for (c = ctx->item; c; c = c2) { |
| 242 |
c2 = c->next; |
| 243 |
gpgme_key_release (c->key); |
| 244 |
c->key = NULL; |
| 245 |
if (c->sym_prefs) |
| 246 |
free (c->sym_prefs); |
| 247 |
c->sym_prefs = NULL; |
| 248 |
if (c->attrib.d) |
| 249 |
free (c->attrib.d); |
| 250 |
c->attrib.d = NULL; |
| 251 |
if (c->card_type) |
| 252 |
free (c->card_type); |
| 253 |
free (c); |
| 254 |
} |
| 255 |
if (ctx) |
| 256 |
free (ctx); |
| 257 |
} |
| 258 |
|
| 259 |
|
| 260 |
/* Set (progress) callback for the given keycache object. |
| 261 |
@ctx the keycache |
| 262 |
@cb the callback function |
| 263 |
@cb_value1 opaque value which is passed to the callback. |
| 264 |
@cb_value2 see @cb_value1. */ |
| 265 |
void |
| 266 |
gpg_keycache_set_cb (gpg_keycache_t ctx, |
| 267 |
void (*cb)(void *, const char *, int, int, int), |
| 268 |
void * cb_value1, int cb_value2) |
| 269 |
{ |
| 270 |
if (!ctx) |
| 271 |
return; |
| 272 |
ctx->cb = cb; |
| 273 |
ctx->cb_value = cb_value1; |
| 274 |
ctx->cb_value2 = cb_value2; |
| 275 |
} |
| 276 |
|
| 277 |
|
| 278 |
/* Add @key to the cache @ctx. @opaque return the key cache context as a void*. |
| 279 |
Return value: 0 on success. */ |
| 280 |
gpgme_error_t |
| 281 |
gpg_keycache_add_key (gpg_keycache_t ctx, gpgme_key_t key, void **opaque) |
| 282 |
{ |
| 283 |
struct keycache_s * c, * n1; |
| 284 |
|
| 285 |
if (!ctx) |
| 286 |
return gpg_error (GPG_ERR_INV_ARG); |
| 287 |
|
| 288 |
c = (struct keycache_s*)calloc (1, sizeof *c); |
| 289 |
if (!c) |
| 290 |
return gpg_error (GPG_ERR_ENOMEM); |
| 291 |
c->gloflags.is_protected = 1; /*default: assume protection. */ |
| 292 |
c->key = key; |
| 293 |
if (!ctx->item) |
| 294 |
ctx->item = c; |
| 295 |
else { |
| 296 |
for (n1 = ctx->item; n1 && n1->next; n1 = n1->next) |
| 297 |
; |
| 298 |
n1->next = c; |
| 299 |
} |
| 300 |
if (opaque) |
| 301 |
*opaque = c; |
| 302 |
return 0; |
| 303 |
} |
| 304 |
|
| 305 |
|
| 306 |
|
| 307 |
#define has_keyid_len(pattern) (\ |
| 308 |
strlen (pattern) == 8 || strlen (pattern) == 10 || \ |
| 309 |
strlen (pattern) == 16 || strlen (pattern) == 18) |
| 310 |
|
| 311 |
|
| 312 |
gpgme_error_t |
| 313 |
gpg_keycache_find_key2 (gpg_keycache_t ctx, const char *pattern, int flags, |
| 314 |
gpgme_key_t *r_key, struct keycache_s **r_item) |
| 315 |
{ |
| 316 |
struct keycache_s *c; |
| 317 |
gpgme_subkey_t s; |
| 318 |
gpgme_user_id_t u; |
| 319 |
gpgme_key_t key; |
| 320 |
const char *kid; |
| 321 |
|
| 322 |
if (!ctx || !r_key) |
| 323 |
return gpg_error (GPG_ERR_INV_ARG); |
| 324 |
|
| 325 |
if (strstr (pattern, "0x")) |
| 326 |
pattern += 2; |
| 327 |
|
| 328 |
/* Sometimes a subkey has no valid fpr. As a kludge we convert v4 |
| 329 |
fingerprints into the 64-bit keyid. */ |
| 330 |
if (strlen (pattern) == 40 && isxdigit (*pattern)) |
| 331 |
pattern += 32; |
| 332 |
|
| 333 |
/* XXX: this code is very slow, revamp it and use hash tables whenever |
| 334 |
it is possible. */ |
| 335 |
for (c = ctx->item; c; c = c->next) { |
| 336 |
key = c->key; |
| 337 |
assert (key->_refs >= 1); |
| 338 |
for (s = key->subkeys; s; s = s->next) { |
| 339 |
for (u = key->uids; u; u = u->next) { |
| 340 |
if (u->name && stristr (u->name, pattern)) { |
| 341 |
if (r_item) |
| 342 |
*r_item = c; |
| 343 |
*r_key = flags? c->pubpart->key : c->key; |
| 344 |
return 0; |
| 345 |
} |
| 346 |
} |
| 347 |
if (has_keyid_len (pattern)) |
| 348 |
kid = s->keyid; |
| 349 |
else |
| 350 |
kid = s->fpr; |
| 351 |
if (kid && stristr (kid, pattern)) { |
| 352 |
if (r_item) |
| 353 |
*r_item = c; |
| 354 |
*r_key = flags? c->pubpart->key : c->key; |
| 355 |
return 0; |
| 356 |
} |
| 357 |
} |
| 358 |
} |
| 359 |
*r_key = NULL; |
| 360 |
return gpg_error (GPG_ERR_INTERNAL); |
| 361 |
} /* keycache_find_key */ |
| 362 |
|
| 363 |
|
| 364 |
gpgme_error_t |
| 365 |
gpg_keycache_find_key (gpg_keycache_t ctx, const char *pattern, |
| 366 |
int flags, gpgme_key_t *r_key) |
| 367 |
{ |
| 368 |
return gpg_keycache_find_key2 (ctx, pattern, flags, r_key, NULL); |
| 369 |
} |
| 370 |
|
| 371 |
|
| 372 |
gpgme_error_t |
| 373 |
gpg_keycache_update_key (gpg_keycache_t ctx, int is_sec, |
| 374 |
void *opaque, const char *keyid) |
| 375 |
{ |
| 376 |
struct keycache_s *c = NULL, *c_new=NULL; |
| 377 |
gpgme_key_t key=NULL, fndkey=NULL; |
| 378 |
gpgme_error_t err; |
| 379 |
gpgme_ctx_t gctx; |
| 380 |
gpg_keycache_t pub = (gpg_keycache_t)opaque; |
| 381 |
|
| 382 |
err = gpgme_new (&gctx); |
| 383 |
if (err) |
| 384 |
return err; |
| 385 |
err = gpgme_get_key (gctx, keyid, &key, is_sec); |
| 386 |
gpgme_release (gctx); |
| 387 |
if (err) |
| 388 |
return err; |
| 389 |
err = gpg_keycache_find_key2 (ctx, keyid, 0, &fndkey, &c); |
| 390 |
if (!err && c != NULL) { |
| 391 |
log_debug ("keycache update: keyid=%s %p\r\n", keyid, pub); |
| 392 |
gpgme_key_release (fndkey); |
| 393 |
c->key = key; |
| 394 |
c->flags = 0; |
| 395 |
if (is_sec && pub != NULL && |
| 396 |
!gpg_keycache_find_key (pub, keyid, 0, &fndkey)) { |
| 397 |
log_debug ("keycache update: set public part %p\r\n", fndkey); |
| 398 |
c->pubpart->key = fndkey; |
| 399 |
} |
| 400 |
} |
| 401 |
else { |
| 402 |
log_debug ("keycache add: sync public part\r\n"); |
| 403 |
if (is_sec) |
| 404 |
gpg_keycache_find_key2 (pub, keyid, 0, &fndkey, &c_new); |
| 405 |
gpg_keycache_add_key (ctx, key, (void **)&c); |
| 406 |
if (c != NULL && is_sec) { |
| 407 |
log_debug ("keycache add: keyid=%s %p %p\r\n", keyid, c, fndkey); |
| 408 |
c->pubpart = c_new; |
| 409 |
if (c_new != NULL) { |
| 410 |
c->pubpart->key = fndkey; |
| 411 |
c->gloflags.is_protected = c_new->gloflags.is_protected; |
| 412 |
c->gloflags.divert_to_card = c_new->gloflags.divert_to_card; |
| 413 |
} |
| 414 |
} |
| 415 |
} |
| 416 |
return 0; |
| 417 |
} |
| 418 |
|
| 419 |
|
| 420 |
/* Delete a key from the cache @ctx with the pattern @pattern. |
| 421 |
Return value: 0 on success. */ |
| 422 |
gpgme_error_t |
| 423 |
gpg_keycache_delete_key (gpg_keycache_t ctx, const char *pattern) |
| 424 |
{ |
| 425 |
struct keycache_s *itm = NULL, *c; |
| 426 |
gpgme_key_t key; |
| 427 |
gpgme_error_t rc; |
| 428 |
|
| 429 |
if (!ctx) |
| 430 |
return gpg_error (GPG_ERR_INV_ARG); |
| 431 |
rc = gpg_keycache_find_key2 (ctx, pattern, 0, &key, &itm); |
| 432 |
if (rc) |
| 433 |
return rc; |
| 434 |
|
| 435 |
c = ctx->item; |
| 436 |
if (c->next == NULL) { |
| 437 |
gpgme_key_release (itm->key); |
| 438 |
if (itm) |
| 439 |
free (itm); |
| 440 |
ctx->item = NULL; |
| 441 |
} |
| 442 |
else { |
| 443 |
while (c && c->next != itm) |
| 444 |
c = c->next; |
| 445 |
c->next = c->next->next; |
| 446 |
gpgme_key_release (itm->key); |
| 447 |
if (itm) |
| 448 |
free (itm); |
| 449 |
} |
| 450 |
return 0; |
| 451 |
} |
| 452 |
|
| 453 |
|
| 454 |
/* Initialize the given cache @ctx. If @pattern is NULL, the entire keyring |
| 455 |
will be added to the cache. @secret is 1 if the source is the secret keyring. |
| 456 |
Return value: 0 on success. */ |
| 457 |
gpgme_error_t |
| 458 |
gpg_keycache_init (gpg_keycache_t ctx, const char *pattern, int secret) |
| 459 |
{ |
| 460 |
gpgme_error_t err; |
| 461 |
gpgme_ctx_t c; |
| 462 |
gpgme_key_t key; |
| 463 |
int count = 0; |
| 464 |
|
| 465 |
if (!ctx) |
| 466 |
return gpg_error (GPG_ERR_INV_ARG); |
| 467 |
|
| 468 |
err = gpgme_new (&c); |
| 469 |
if (err) |
| 470 |
return err; |
| 471 |
|
| 472 |
gpgme_set_keylist_mode (c, GPGME_KEYLIST_MODE_SIGS); |
| 473 |
err = gpgme_op_keylist_start (c, pattern, secret); |
| 474 |
while(!err) { |
| 475 |
err = gpgme_op_keylist_next (c, &key); |
| 476 |
if (!err) |
| 477 |
err = gpg_keycache_add_key (ctx, key, NULL); |
| 478 |
if (ctx->cb) |
| 479 |
ctx->cb (ctx->cb_value, _("Load GPG Keyrings..."), 0, |
| 480 |
count++, ctx->cb_value2); |
| 481 |
} |
| 482 |
if (gpgme_err_code (err) == GPG_ERR_EOF) |
| 483 |
err = gpg_error (GPG_ERR_NO_ERROR); |
| 484 |
/* XXX: make sure the progress dialog is closed. */ |
| 485 |
gpgme_op_keylist_end (c); |
| 486 |
gpgme_release (c); |
| 487 |
return err; |
| 488 |
} |
| 489 |
|
| 490 |
|
| 491 |
/* XXX: kludge to see if the key is stored on a card. */ |
| 492 |
static int |
| 493 |
key_divert_to_card (gpgme_key_t key) |
| 494 |
{ |
| 495 |
gpgme_subkey_t k; |
| 496 |
int n=0, n_alg=0, can_auth = 0; |
| 497 |
|
| 498 |
for (k = key->subkeys; k; k = k->next) { |
| 499 |
n++; |
| 500 |
if (k->pubkey_algo == GPGME_PK_RSA && k->length == 1024) |
| 501 |
n_alg++; |
| 502 |
if (k->can_authenticate) |
| 503 |
can_auth++; |
| 504 |
} |
| 505 |
if (n == 3 && n_alg == 3 && can_auth == 1) |
| 506 |
return 1; |
| 507 |
return 0; |
| 508 |
} |
| 509 |
|
| 510 |
|
| 511 |
gpgme_error_t |
| 512 |
gpg_keycache_sync (gpg_keycache_t pub, gpg_keycache_t sec) |
| 513 |
{ |
| 514 |
struct keycache_s *c, *c_sec; |
| 515 |
gpgme_key_t key; |
| 516 |
|
| 517 |
if (!pub || !sec) |
| 518 |
return gpg_error (GPG_ERR_INV_ARG); |
| 519 |
|
| 520 |
for (c=sec->item; c; c=c->next) { |
| 521 |
if (!gpg_keycache_find_key2 (pub, c->key->subkeys->keyid, 0, &key, &c_sec)) { |
| 522 |
c_sec->gloflags.is_protected = c->gloflags.is_protected; |
| 523 |
c_sec->gloflags.divert_to_card = c->gloflags.divert_to_card; |
| 524 |
if (!c->gloflags.divert_to_card) |
| 525 |
c->gloflags.divert_to_card = key_divert_to_card (key); |
| 526 |
c->pubpart = c_sec; |
| 527 |
c->pubpart->key = key; |
| 528 |
} |
| 529 |
} |
| 530 |
return 0; |
| 531 |
} |
| 532 |
|
| 533 |
|
| 534 |
/* Rewind the given cache @ctx to the begin. */ |
| 535 |
void |
| 536 |
gpg_keycache_rewind (gpg_keycache_t ctx) |
| 537 |
{ |
| 538 |
if (ctx) |
| 539 |
ctx->pos = 0; |
| 540 |
} |
| 541 |
|
| 542 |
|
| 543 |
|
| 544 |
/* Return the number of elements in the cache @ctx. */ |
| 545 |
int |
| 546 |
gpg_keycache_get_size (gpg_keycache_t ctx) |
| 547 |
{ |
| 548 |
struct keycache_s *c; |
| 549 |
int count = 0; |
| 550 |
|
| 551 |
if (!ctx) |
| 552 |
return 0; |
| 553 |
for (c = ctx->item; c; c = c->next) |
| 554 |
count++; |
| 555 |
return count; |
| 556 |
} |
| 557 |
|
| 558 |
|
| 559 |
static gpgme_error_t |
| 560 |
keycache_next_key (gpg_keycache_t ctx, int flags, |
| 561 |
struct keycache_s **c, gpgme_key_t *r_key) |
| 562 |
{ |
| 563 |
if (!ctx || !r_key) |
| 564 |
return gpg_error (GPG_ERR_INV_ARG); |
| 565 |
|
| 566 |
if (!ctx->pos) |
| 567 |
ctx->tmp = ctx->item; |
| 568 |
|
| 569 |
if (!ctx->tmp || !ctx->tmp->key) { |
| 570 |
ctx->pos = 0; |
| 571 |
*r_key = NULL; |
| 572 |
return gpg_error (GPG_ERR_EOF); |
| 573 |
} |
| 574 |
|
| 575 |
*r_key = flags? ctx->tmp->pubpart->key : ctx->tmp->key; |
| 576 |
*c = ctx->tmp = ctx->tmp->next; |
| 577 |
ctx->pos++; |
| 578 |
|
| 579 |
return 0; |
| 580 |
} |
| 581 |
|
| 582 |
|
| 583 |
/* Return the next key from the cache @ctx. The key will be returned |
| 584 |
in @r_key. @flags can contain additional flags. |
| 585 |
Return value: 0 on success. */ |
| 586 |
gpgme_error_t |
| 587 |
gpg_keycache_next_key (gpg_keycache_t ctx, int flags, gpgme_key_t *r_key) |
| 588 |
{ |
| 589 |
struct keycache_s *c=NULL; |
| 590 |
gpgme_error_t err = 0; |
| 591 |
|
| 592 |
err = keycache_next_key (ctx, flags, &c, r_key); |
| 593 |
return err; |
| 594 |
} |
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