src/libcharon/plugins/stroke/stroke_cred.c

   1 /*
   2  * Copyright (C) 2008-2013 Tobias Brunner
   3  * Copyright (C) 2008 Martin Willi
   4  * Hochschule fuer Technik Rapperswil
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * for more details.
  15  */
  16
  17 #include <sys/types.h>
  18 #include <sys/stat.h>
  19 #include <limits.h>
  20 #include <libgen.h>
  21 #include <sys/mman.h>
  22 #include <fcntl.h>
  23 #include <errno.h>
  24 #include <unistd.h>
  25
  26 #ifdef HAVE_GLOB_H
  27 #include <glob.h>
  28 #endif
  29
  30 #include "stroke_cred.h"
  31
  32 #include <credentials/certificates/x509.h>
  33 #include <credentials/certificates/crl.h>
  34 #include <credentials/certificates/ac.h>
  35 #include <credentials/containers/pkcs12.h>
  36 #include <credentials/sets/mem_cred.h>
  37 #include <credentials/sets/callback_cred.h>
  38 #include <collections/linked_list.h>
  39 #include <utils/lexparser.h>
  40 #include <threading/rwlock.h>
  41 #include <daemon.h>
  42
  43 /* configuration directories and files */
  44 #define CONFIG_DIR IPSEC_CONFDIR
  45 #define IPSEC_D_DIR CONFIG_DIR "/ipsec.d"
  46 #define PRIVATE_KEY_DIR IPSEC_D_DIR "/private"
  47 #define CERTIFICATE_DIR IPSEC_D_DIR "/certs"
  48 #define CA_CERTIFICATE_DIR IPSEC_D_DIR "/cacerts"
  49 #define AA_CERTIFICATE_DIR IPSEC_D_DIR "/aacerts"
  50 #define ATTR_CERTIFICATE_DIR IPSEC_D_DIR "/acerts"
  51 #define OCSP_CERTIFICATE_DIR IPSEC_D_DIR "/ocspcerts"
  52 #define CRL_DIR IPSEC_D_DIR "/crls"
  53 #define SECRETS_FILE CONFIG_DIR "/ipsec.secrets"
  54
  55 #define MAX_SECRETS_RECURSION 10
  56
  57 typedef struct private_stroke_cred_t private_stroke_cred_t;
  58
  59 /**
  60  * private data of stroke_cred
  61  */
  62 struct private_stroke_cred_t {
  63
  64         /**
  65          * public functions
  66          */
  67         stroke_cred_t public;
  68
  69         /**
  70          * credentials
  71          */
  72         mem_cred_t *creds;
  73
  74         /**
  75          * ignore missing CA basic constraint (i.e. treat all certificates in
  76          * ipsec.conf ca sections and ipsec.d/cacerts as CA certificates)
  77          */
  78         bool force_ca_cert;
  79
  80         /**
  81          * cache CRLs to disk?
  82          */
  83         bool cachecrl;
  84 };
  85
  86 /** Length of smartcard specifier parts (module, keyid) */
  87 #define SC_PART_LEN 128
  88
  89 /**
  90  * Kind of smartcard specifier token
  91  */
  92 typedef enum {
  93         SC_FORMAT_SLOT_MODULE_KEYID,
  94         SC_FORMAT_SLOT_KEYID,
  95         SC_FORMAT_KEYID,
  96         SC_FORMAT_INVALID,
  97 } smartcard_format_t;
  98
  99 /**
 100  * Parse a smartcard specifier token
 101  */
 102 static smartcard_format_t parse_smartcard(char *smartcard, u_int *slot,
 103                                                                                   char *module, char *keyid)
 104 {
 105         /* The token has one of the following three formats:
 106          * - %smartcard<slot>@<module>:<keyid>
 107          * - %smartcard<slot>:<keyid>
 108          * - %smartcard:<keyid>
 109          */
 110         char buf[2 * SC_PART_LEN], *pos;
 111
 112         if (sscanf(smartcard, "%%smartcard%u@%255s", slot, buf) == 2)
 113         {
 114                 pos = strchr(buf, ':');
 115                 if (!pos)
 116                 {
 117                         return SC_FORMAT_INVALID;
 118                 }
 119                 *pos++ = '\0';
 120                 snprintf(module, SC_PART_LEN, "%s", buf);
 121                 snprintf(keyid, SC_PART_LEN, "%s", pos);
 122                 return SC_FORMAT_SLOT_MODULE_KEYID;
 123         }
 124         if (sscanf(smartcard, "%%smartcard%u:%127s", slot, keyid) == 2)
 125         {
 126                 return SC_FORMAT_SLOT_KEYID;
 127         }
 128         if (sscanf(smartcard, "%%smartcard:%127s", keyid) == 1)
 129         {
 130                 return SC_FORMAT_KEYID;
 131         }
 132         return SC_FORMAT_INVALID;
 133 }
 134
 135 /**
 136  * Load a credential from a smartcard
 137  */
 138 static certificate_t *load_from_smartcard(smartcard_format_t format,
 139                                                                                   u_int slot, char *module, char *keyid,
 140                                                                                   credential_type_t type, int subtype)
 141 {
 142         chunk_t chunk;
 143         void *cred;
 144
 145         chunk = chunk_from_hex(chunk_create(keyid, strlen(keyid)), NULL);
 146         switch (format)
 147         {
 148                 case SC_FORMAT_SLOT_MODULE_KEYID:
 149                         cred = lib->creds->create(lib->creds, type, subtype,
 150                                                         BUILD_PKCS11_SLOT, slot,
 151                                                         BUILD_PKCS11_MODULE, module,
 152                                                         BUILD_PKCS11_KEYID, chunk, BUILD_END);
 153                         break;
 154                 case SC_FORMAT_SLOT_KEYID:
 155                         cred = lib->creds->create(lib->creds, type, subtype,
 156                                                         BUILD_PKCS11_SLOT, slot,
 157                                                         BUILD_PKCS11_KEYID, chunk, BUILD_END);
 158                         break;
 159                 case SC_FORMAT_KEYID:
 160                         cred = lib->creds->create(lib->creds, type, subtype,
 161                                                         BUILD_PKCS11_KEYID, chunk, BUILD_END);
 162                         break;
 163                 default:
 164                         cred = NULL;
 165                         break;
 166         }
 167         free(chunk.ptr);
 168
 169         return cred;
 170 }
 171
 172 METHOD(stroke_cred_t, load_ca, certificate_t*,
 173         private_stroke_cred_t *this, char *filename)
 174 {
 175         certificate_t *cert = NULL;
 176         char path[PATH_MAX];
 177
 178         if (strneq(filename, "%smartcard", strlen("%smartcard")))
 179         {
 180                 smartcard_format_t format;
 181                 char module[SC_PART_LEN], keyid[SC_PART_LEN];
 182                 u_int slot;
 183
 184                 format = parse_smartcard(filename, &slot, module, keyid);
 185                 if (format != SC_FORMAT_INVALID)
 186                 {
 187                         cert = (certificate_t*)load_from_smartcard(format,
 188                                                         slot, module, keyid, CRED_CERTIFICATE, CERT_X509);
 189                 }
 190         }
 191         else
 192         {
 193                 if (*filename == '/')
 194                 {
 195                         snprintf(path, sizeof(path), "%s", filename);
 196                 }
 197                 else
 198                 {
 199                         snprintf(path, sizeof(path), "%s/%s", CA_CERTIFICATE_DIR, filename);
 200                 }
 201
 202                 if (this->force_ca_cert)
 203                 {       /* we treat this certificate as a CA certificate even if it has no
 204                          * CA basic constraint */
 205                         cert = lib->creds->create(lib->creds,
 206                                                                   CRED_CERTIFICATE, CERT_X509,
 207                                                                   BUILD_FROM_FILE, path, BUILD_X509_FLAG, X509_CA,
 208                                                                   BUILD_END);
 209                 }
 210                 else
 211                 {
 212                         cert = lib->creds->create(lib->creds,
 213                                                                   CRED_CERTIFICATE, CERT_X509,
 214                                                                   BUILD_FROM_FILE, path,
 215                                                                   BUILD_END);
 216                 }
 217         }
 218         if (cert)
 219         {
 220                 x509_t *x509 = (x509_t*)cert;
 221
 222                 if (!(x509->get_flags(x509) & X509_CA))
 223                 {
 224                         DBG1(DBG_CFG, "  ca certificate \"%Y\" misses ca basic constraint, "
 225                                  "discarded", cert->get_subject(cert));
 226                         cert->destroy(cert);
 227                         return NULL;
 228                 }
 229                 DBG1(DBG_CFG, "  loaded ca certificate \"%Y\" from '%s'",
 230                          cert->get_subject(cert), filename);
 231                 return this->creds->add_cert_ref(this->creds, TRUE, cert);
 232         }
 233         return NULL;
 234 }
 235
 236 METHOD(stroke_cred_t, load_peer, certificate_t*,
 237         private_stroke_cred_t *this, char *filename)
 238 {
 239         certificate_t *cert = NULL;
 240         char path[PATH_MAX];
 241
 242         if (strneq(filename, "%smartcard", strlen("%smartcard")))
 243         {
 244                 smartcard_format_t format;
 245                 char module[SC_PART_LEN], keyid[SC_PART_LEN];
 246                 u_int slot;
 247
 248                 format = parse_smartcard(filename, &slot, module, keyid);
 249                 if (format != SC_FORMAT_INVALID)
 250                 {
 251                         cert = (certificate_t*)load_from_smartcard(format,
 252                                                         slot, module, keyid, CRED_CERTIFICATE, CERT_X509);
 253                 }
 254         }
 255         else
 256         {
 257                 if (*filename == '/')
 258                 {
 259                         snprintf(path, sizeof(path), "%s", filename);
 260                 }
 261                 else
 262                 {
 263                         snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename);
 264                 }
 265
 266                 cert = lib->creds->create(lib->creds,
 267                                                                   CRED_CERTIFICATE, CERT_ANY,
 268                                                                   BUILD_FROM_FILE, path,
 269                                                                   BUILD_END);
 270         }
 271         if (cert)
 272         {
 273                 cert = this->creds->add_cert_ref(this->creds, TRUE, cert);
 274                 DBG1(DBG_CFG, "  loaded certificate \"%Y\" from '%s'",
 275                                           cert->get_subject(cert), filename);
 276                 return cert;
 277         }
 278         DBG1(DBG_CFG, "  loading certificate from '%s' failed", filename);
 279         return NULL;
 280 }
 281
 282 METHOD(stroke_cred_t, load_pubkey, certificate_t*,
 283         private_stroke_cred_t *this, char *filename, identification_t *identity)
 284 {
 285         certificate_t *cert;
 286         public_key_t *key;
 287         char path[PATH_MAX];
 288         builder_part_t build_part;
 289         key_type_t type = KEY_ANY;
 290
 291         if (streq(filename, "%dns"))
 292         {
 293                 return NULL;
 294         }
 295         if (strncaseeq(filename, "dns:", 4))
 296         {       /* RFC 3110 format */
 297                 build_part = BUILD_BLOB_DNSKEY;
 298                 /* not a complete RR, only RSA supported */
 299                 type = KEY_RSA;
 300                 filename += 4;
 301         }
 302         else if (strncaseeq(filename, "ssh:", 4))
 303         {       /* SSH key */
 304                 build_part = BUILD_BLOB_SSHKEY;
 305                 filename += 4;
 306         }
 307         else
 308         {       /* try PKCS#1 by default */
 309                 build_part = BUILD_BLOB_ASN1_DER;
 310         }
 311         if (strncaseeq(filename, "0x", 2) || strncaseeq(filename, "0s", 2))
 312         {
 313                 chunk_t printable_key, raw_key;
 314
 315                 printable_key = chunk_create(filename + 2, strlen(filename) - 2);
 316                 raw_key = strncaseeq(filename, "0x", 2) ?
 317                                                                  chunk_from_hex(printable_key, NULL) :
 318                                                                  chunk_from_base64(printable_key, NULL);
 319                 key = lib->creds->create(lib->creds, CRED_PUBLIC_KEY, type,
 320                                                                  build_part, raw_key, BUILD_END);
 321                 chunk_free(&raw_key);
 322                 if (key)
 323                 {
 324                         cert = lib->creds->create(lib->creds, CRED_CERTIFICATE,
 325                                                                           CERT_TRUSTED_PUBKEY,
 326                                                                           BUILD_PUBLIC_KEY, key,
 327                                                                           BUILD_SUBJECT, identity,
 328                                                                           BUILD_END);
 329                         type = key->get_type(key);
 330                         key->destroy(key);
 331                         if (cert)
 332                         {
 333                                 cert = this->creds->add_cert_ref(this->creds, TRUE, cert);
 334                                 DBG1(DBG_CFG, "  loaded %N public key for \"%Y\"",
 335                                          key_type_names, type, identity);
 336                                 return cert;
 337                         }
 338                 }
 339                 DBG1(DBG_CFG, "  loading public key for \"%Y\" failed", identity);
 340         }
 341         else
 342         {
 343                 if (*filename == '/')
 344                 {
 345                         snprintf(path, sizeof(path), "%s", filename);
 346                 }
 347                 else
 348                 {
 349                         snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename);
 350                 }
 351
 352                 cert = lib->creds->create(lib->creds,
 353                                                                   CRED_CERTIFICATE, CERT_TRUSTED_PUBKEY,
 354                                                                   BUILD_FROM_FILE, path,
 355                                                                   BUILD_SUBJECT, identity,
 356                                                                   BUILD_END);
 357                 if (cert)
 358                 {
 359                         cert = this->creds->add_cert_ref(this->creds, TRUE, cert);
 360                         key = cert->get_public_key(cert);
 361                         type = key->get_type(key);
 362                         key->destroy(key);
 363                         DBG1(DBG_CFG, "  loaded %N public key for \"%Y\" from '%s'",
 364                                  key_type_names, type, identity, filename);
 365                         return cert;
 366                 }
 367                 DBG1(DBG_CFG, "  loading public key for \"%Y\" from '%s' failed",
 368                          identity, filename);
 369         }
 370         return NULL;
 371 }
 372
 373 /**
 374  * load trusted certificates from a directory
 375  */
 376 static void load_certdir(private_stroke_cred_t *this, char *path,
 377                                                  certificate_type_t type, x509_flag_t flag)
 378 {
 379         struct stat st;
 380         char *file;
 381
 382         enumerator_t *enumerator = enumerator_create_directory(path);
 383
 384         if (!enumerator)
 385         {
 386                 DBG1(DBG_CFG, "  reading directory failed");
 387                 return;
 388         }
 389
 390         while (enumerator->enumerate(enumerator, NULL, &file, &st))
 391         {
 392                 certificate_t *cert;
 393
 394                 if (!S_ISREG(st.st_mode))
 395                 {
 396                         /* skip special file */
 397                         continue;
 398                 }
 399                 switch (type)
 400                 {
 401                         case CERT_X509:
 402                                 if (flag & X509_CA)
 403                                 {
 404                                         if (this->force_ca_cert)
 405                                         {       /* treat this certificate as CA cert even it has no
 406                                                  * CA basic constraint */
 407                                                 cert = lib->creds->create(lib->creds,
 408                                                                                 CRED_CERTIFICATE, CERT_X509,
 409                                                                                 BUILD_FROM_FILE, file, BUILD_X509_FLAG,
 410                                                                                 X509_CA, BUILD_END);
 411                                         }
 412                                         else
 413                                         {
 414                                                 cert = lib->creds->create(lib->creds,
 415                                                                                 CRED_CERTIFICATE, CERT_X509,
 416                                                                                 BUILD_FROM_FILE, file, BUILD_END);
 417                                         }
 418                                         if (cert)
 419                                         {
 420                                                 x509_t *x509 = (x509_t*)cert;
 421
 422                                                 if (!(x509->get_flags(x509) & X509_CA))
 423                                                 {
 424                                                         DBG1(DBG_CFG, "  ca certificate \"%Y\" lacks "
 425                                                                  "ca basic constraint, discarded",
 426                                                                  cert->get_subject(cert));
 427                                                         cert->destroy(cert);
 428                                                         cert = NULL;
 429                                                 }
 430                                                 else
 431                                                 {
 432                                                         DBG1(DBG_CFG, "  loaded ca certificate \"%Y\" "
 433                                                                  "from '%s'", cert->get_subject(cert), file);
 434                                                 }
 435                                         }
 436                                         else
 437                                         {
 438                                                 DBG1(DBG_CFG, "  loading ca certificate from '%s' "
 439                                                                           "failed", file);
 440                                         }
 441                                 }
 442                                 else
 443                                 {       /* for all other flags, we add them to the certificate. */
 444                                         cert = lib->creds->create(lib->creds,
 445                                                                                 CRED_CERTIFICATE, CERT_X509,
 446                                                                                 BUILD_FROM_FILE, file,
 447                                                                                 BUILD_X509_FLAG, flag, BUILD_END);
 448                                         if (cert)
 449                                         {
 450                                                 DBG1(DBG_CFG, "  loaded certificate \"%Y\" from '%s'",
 451                                                                           cert->get_subject(cert), file);
 452                                         }
 453                                         else
 454                                         {
 455                                                 DBG1(DBG_CFG, "  loading certificate from '%s' "
 456                                                                           "failed", file);
 457                                         }
 458                                 }
 459                                 if (cert)
 460                                 {
 461                                         this->creds->add_cert(this->creds, TRUE, cert);
 462                                 }
 463                                 break;
 464                         case CERT_X509_CRL:
 465                                 cert = lib->creds->create(lib->creds,
 466                                                                                   CRED_CERTIFICATE, CERT_X509_CRL,
 467                                                                                   BUILD_FROM_FILE, file,
 468                                                                                   BUILD_END);
 469                                 if (cert)
 470                                 {
 471                                         this->creds->add_crl(this->creds, (crl_t*)cert);
 472                                         DBG1(DBG_CFG, "  loaded crl from '%s'",  file);
 473                                 }
 474                                 else
 475                                 {
 476                                         DBG1(DBG_CFG, "  loading crl from '%s' failed", file);
 477                                 }
 478                                 break;
 479                         case CERT_X509_AC:
 480                                 cert = lib->creds->create(lib->creds,
 481                                                                                   CRED_CERTIFICATE, CERT_X509_AC,
 482                                                                                   BUILD_FROM_FILE, file,
 483                                                                                   BUILD_END);
 484                                 if (cert)
 485                                 {
 486                                         this->creds->add_cert(this->creds, FALSE, cert);
 487                                         DBG1(DBG_CFG, "  loaded attribute certificate from '%s'",
 488                                                                   file);
 489                                 }
 490                                 else
 491                                 {
 492                                         DBG1(DBG_CFG, "  loading attribute certificate from '%s' "
 493                                                                   "failed", file);
 494                                 }
 495                                 break;
 496                         default:
 497                                 break;
 498                 }
 499         }
 500         enumerator->destroy(enumerator);
 501 }
 502
 503 METHOD(stroke_cred_t, cache_cert, void,
 504         private_stroke_cred_t *this, certificate_t *cert)
 505 {
 506         if (cert->get_type(cert) == CERT_X509_CRL && this->cachecrl)
 507         {
 508                 /* CRLs get written to /etc/ipsec.d/crls/<authkeyId>.crl */
 509                 crl_t *crl = (crl_t*)cert;
 510
 511                 cert->get_ref(cert);
 512                 if (this->creds->add_crl(this->creds, crl))
 513                 {
 514                         char buf[BUF_LEN];
 515                         chunk_t chunk, hex;
 516
 517                         chunk = crl->get_authKeyIdentifier(crl);
 518                         hex = chunk_to_hex(chunk, NULL, FALSE);
 519                         snprintf(buf, sizeof(buf), "%s/%s.crl", CRL_DIR, hex.ptr);
 520                         free(hex.ptr);
 521
 522                         if (cert->get_encoding(cert, CERT_ASN1_DER, &chunk))
 523                         {
 524                                 chunk_write(chunk, buf, "crl", 022, TRUE);
 525                                 free(chunk.ptr);
 526                         }
 527                 }
 528         }
 529 }
 530
 531 METHOD(stroke_cred_t, cachecrl, void,
 532         private_stroke_cred_t *this, bool enabled)
 533 {
 534         DBG1(DBG_CFG, "crl caching to %s %s",
 535                  CRL_DIR, enabled ? "enabled" : "disabled");
 536         this->cachecrl = enabled;
 537 }
 538
 539
 540 /**
 541  * Convert a string of characters into a binary secret
 542  * A string between single or double quotes is treated as ASCII characters
 543  * A string prepended by 0x is treated as HEX and prepended by 0s as Base64
 544  */
 545 static err_t extract_secret(chunk_t *secret, chunk_t *line)
 546 {
 547         chunk_t raw_secret;
 548         char delimiter = ' ';
 549         bool quotes = FALSE;
 550
 551         if (!eat_whitespace(line))
 552         {
 553                 return "missing secret";
 554         }
 555
 556         if (*line->ptr == '\'' || *line->ptr == '"')
 557         {
 558                 quotes = TRUE;
 559                 delimiter = *line->ptr;
 560                 line->ptr++;  line->len--;
 561         }
 562
 563         if (!extract_token(&raw_secret, delimiter, line))
 564         {
 565                 if (delimiter == ' ')
 566                 {
 567                         raw_secret = *line;
 568                 }
 569                 else
 570                 {
 571                         return "missing second delimiter";
 572                 }
 573         }
 574
 575         if (quotes)
 576         {
 577                 /* treat as an ASCII string */
 578                 *secret = chunk_clone(raw_secret);
 579                 return NULL;
 580         }
 581         /* treat 0x as hex, 0s as base64 */
 582         if (raw_secret.len > 2)
 583         {
 584                 if (strncasecmp("0x", raw_secret.ptr, 2) == 0)
 585                 {
 586                         *secret = chunk_from_hex(chunk_skip(raw_secret, 2), NULL);
 587                         return NULL;
 588                 }
 589                 if (strncasecmp("0s", raw_secret.ptr, 2) == 0)
 590                 {
 591                         *secret = chunk_from_base64(chunk_skip(raw_secret, 2), NULL);
 592                         return NULL;
 593                 }
 594         }
 595         *secret = chunk_clone(raw_secret);
 596         return NULL;
 597 }
 598
 599 /**
 600  * Data for passphrase callback
 601  */
 602 typedef struct {
 603         /** socket we use for prompting */
 604         FILE *prompt;
 605         /** private key file */
 606         char *path;
 607         /** number of tries */
 608         int try;
 609 } passphrase_cb_data_t;
 610
 611 /**
 612  * Callback function to receive Passphrases
 613  */
 614 static shared_key_t* passphrase_cb(passphrase_cb_data_t *data,
 615                                                                 shared_key_type_t type,
 616                                                                 identification_t *me, identification_t *other,
 617                                                                 id_match_t *match_me, id_match_t *match_other)
 618 {
 619         chunk_t secret;
 620         char buf[256];
 621
 622         if (type != SHARED_ANY && type != SHARED_PRIVATE_KEY_PASS)
 623         {
 624                 return NULL;
 625         }
 626
 627         if (data->try > 1)
 628         {
 629                 if (data->try > 5)
 630                 {
 631                         fprintf(data->prompt, "PIN invalid, giving up.\n");
 632                         return NULL;
 633                 }
 634                 fprintf(data->prompt, "PIN invalid!\n");
 635         }
 636         data->try++;
 637         fprintf(data->prompt, "Private key '%s' is encrypted.\n", data->path);
 638         fprintf(data->prompt, "Passphrase:\n");
 639         if (fgets(buf, sizeof(buf), data->prompt))
 640         {
 641                 secret = chunk_create(buf, strlen(buf));
 642                 if (secret.len > 1)
 643                 {       /* trim appended \n */
 644                         secret.len--;
 645                         if (match_me)
 646                         {
 647                                 *match_me = ID_MATCH_PERFECT;
 648                         }
 649                         if (match_other)
 650                         {
 651                                 *match_other = ID_MATCH_NONE;
 652                         }
 653                         return shared_key_create(SHARED_PRIVATE_KEY_PASS, chunk_clone(secret));
 654                 }
 655         }
 656         return NULL;
 657 }
 658
 659 /**
 660  * Data for PIN callback
 661  */
 662 typedef struct {
 663         /** socket we use for prompting */
 664         FILE *prompt;
 665         /** card label */
 666         char *card;
 667         /** card keyid */
 668         chunk_t keyid;
 669         /** number of tries */
 670         int try;
 671 } pin_cb_data_t;
 672
 673 /**
 674  * Callback function to receive PINs
 675  */
 676 static shared_key_t* pin_cb(pin_cb_data_t *data, shared_key_type_t type,
 677                                                         identification_t *me, identification_t *other,
 678                                                         id_match_t *match_me, id_match_t *match_other)
 679 {
 680         chunk_t secret;
 681         char buf[256];
 682
 683         if (type != SHARED_ANY && type != SHARED_PIN)
 684         {
 685                 return NULL;
 686         }
 687
 688         if (!me || !chunk_equals(me->get_encoding(me), data->keyid))
 689         {
 690                 return NULL;
 691         }
 692
 693         if (data->try > 1)
 694         {
 695                 fprintf(data->prompt, "PIN invalid, aborting.\n");
 696                 return NULL;
 697         }
 698         data->try++;
 699         fprintf(data->prompt, "Login to '%s' required\n", data->card);
 700         fprintf(data->prompt, "PIN:\n");
 701         if (fgets(buf, sizeof(buf), data->prompt))
 702         {
 703                 secret = chunk_create(buf, strlen(buf));
 704                 if (secret.len > 1)
 705                 {       /* trim appended \n */
 706                         secret.len--;
 707                         if (match_me)
 708                         {
 709                                 *match_me = ID_MATCH_PERFECT;
 710                         }
 711                         if (match_other)
 712                         {
 713                                 *match_other = ID_MATCH_NONE;
 714                         }
 715                         return shared_key_create(SHARED_PIN, chunk_clone(secret));
 716                 }
 717         }
 718         return NULL;
 719 }
 720
 721 /**
 722  * Load a smartcard with a PIN
 723  */
 724 static bool load_pin(mem_cred_t *secrets, chunk_t line, int line_nr,
 725                                          FILE *prompt)
 726 {
 727         chunk_t sc = chunk_empty, secret = chunk_empty;
 728         char smartcard[BUF_LEN], keyid[SC_PART_LEN], module[SC_PART_LEN];
 729         private_key_t *key = NULL;
 730         u_int slot;
 731         chunk_t chunk;
 732         shared_key_t *shared;
 733         identification_t *id;
 734         mem_cred_t *mem = NULL;
 735         callback_cred_t *cb = NULL;
 736         pin_cb_data_t pin_data;
 737         smartcard_format_t format;
 738
 739         err_t ugh = extract_value(&sc, &line);
 740
 741         if (ugh != NULL)
 742         {
 743                 DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
 744                 return FALSE;
 745         }
 746         if (sc.len == 0)
 747         {
 748                 DBG1(DBG_CFG, "line %d: expected %%smartcard specifier", line_nr);
 749                 return FALSE;
 750         }
 751         snprintf(smartcard, sizeof(smartcard), "%.*s", (int)sc.len, sc.ptr);
 752         smartcard[sizeof(smartcard) - 1] = '\0';
 753
 754         format = parse_smartcard(smartcard, &slot, module, keyid);
 755         if (format == SC_FORMAT_INVALID)
 756         {
 757                 DBG1(DBG_CFG, "line %d: the given %%smartcard specifier is not"
 758                                 " supported or invalid", line_nr);
 759                 return FALSE;
 760         }
 761
 762         if (!eat_whitespace(&line))
 763         {
 764                 DBG1(DBG_CFG, "line %d: expected PIN", line_nr);
 765                 return FALSE;
 766         }
 767         ugh = extract_secret(&secret, &line);
 768         if (ugh != NULL)
 769         {
 770                 DBG1(DBG_CFG, "line %d: malformed PIN: %s", line_nr, ugh);
 771                 return FALSE;
 772         }
 773
 774         chunk = chunk_from_hex(chunk_create(keyid, strlen(keyid)), NULL);
 775         if (secret.len == 7 && strneq(secret.ptr, "%prompt", 7))
 776         {
 777                 free(secret.ptr);
 778                 if (!prompt)
 779                 {       /* no IO channel to prompt, skip */
 780                         chunk_clear(&chunk);
 781                         return TRUE;
 782                 }
 783                 /* use callback credential set to prompt for the pin */
 784                 pin_data.prompt = prompt;
 785                 pin_data.card = smartcard;
 786                 pin_data.keyid = chunk;
 787                 pin_data.try = 1;
 788                 cb = callback_cred_create_shared((void*)pin_cb, &pin_data);
 789                 lib->credmgr->add_local_set(lib->credmgr, &cb->set, FALSE);
 790         }
 791         else
 792         {
 793                 /* provide our pin in a temporary credential set */
 794                 shared = shared_key_create(SHARED_PIN, secret);
 795                 id = identification_create_from_encoding(ID_KEY_ID, chunk);
 796                 mem = mem_cred_create();
 797                 mem->add_shared(mem, shared, id, NULL);
 798                 lib->credmgr->add_local_set(lib->credmgr, &mem->set, FALSE);
 799         }
 800
 801         /* unlock: smartcard needs the pin and potentially calls public set */
 802         key = (private_key_t*)load_from_smartcard(format, slot, module, keyid,
 803                                                                                           CRED_PRIVATE_KEY, KEY_ANY);
 804         if (mem)
 805         {
 806                 lib->credmgr->remove_local_set(lib->credmgr, &mem->set);
 807                 mem->destroy(mem);
 808         }
 809         if (cb)
 810         {
 811                 lib->credmgr->remove_local_set(lib->credmgr, &cb->set);
 812                 cb->destroy(cb);
 813         }
 814         chunk_clear(&chunk);
 815
 816         if (key)
 817         {
 818                 DBG1(DBG_CFG, "  loaded private key from %.*s", (int)sc.len, sc.ptr);
 819                 secrets->add_key(secrets, key);
 820         }
 821         return TRUE;
 822 }
 823
 824 /**
 825  * Load a private key or PKCS#12 container from a file
 826  */
 827 static bool load_from_file(chunk_t line, int line_nr, FILE *prompt,
 828                                                    char *path, int type, int subtype,
 829                                                    void **result)
 830 {
 831         chunk_t filename;
 832         chunk_t secret = chunk_empty;
 833
 834         err_t ugh = extract_value(&filename, &line);
 835
 836         if (ugh != NULL)
 837         {
 838                 DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
 839                 return FALSE;
 840         }
 841         if (filename.len == 0)
 842         {
 843                 DBG1(DBG_CFG, "line %d: empty filename", line_nr);
 844                 return FALSE;
 845         }
 846         if (*filename.ptr == '/')
 847         {
 848                 /* absolute path name */
 849                 snprintf(path, PATH_MAX, "%.*s", (int)filename.len, filename.ptr);
 850         }
 851         else
 852         {
 853                 /* relative path name */
 854                 snprintf(path, PATH_MAX, "%s/%.*s", PRIVATE_KEY_DIR,
 855                                  (int)filename.len, filename.ptr);
 856         }
 857
 858         /* check for optional passphrase */
 859         if (eat_whitespace(&line))
 860         {
 861                 ugh = extract_secret(&secret, &line);
 862                 if (ugh != NULL)
 863                 {
 864                         DBG1(DBG_CFG, "line %d: malformed passphrase: %s", line_nr, ugh);
 865                         return FALSE;
 866                 }
 867         }
 868         if (secret.len == 7 && strneq(secret.ptr, "%prompt", 7))
 869         {
 870                 callback_cred_t *cb = NULL;
 871                 passphrase_cb_data_t pp_data = {
 872                         .prompt = prompt,
 873                         .path = path,
 874                         .try = 1,
 875                 };
 876
 877                 free(secret.ptr);
 878                 if (!prompt)
 879                 {
 880                         *result = NULL;
 881                         return TRUE;
 882                 }
 883                 /* use callback credential set to prompt for the passphrase */
 884                 pp_data.prompt = prompt;
 885                 pp_data.path = path;
 886                 pp_data.try = 1;
 887                 cb = callback_cred_create_shared((void*)passphrase_cb, &pp_data);
 888                 lib->credmgr->add_local_set(lib->credmgr, &cb->set, FALSE);
 889
 890                 *result = lib->creds->create(lib->creds, type, subtype,
 891                                                                          BUILD_FROM_FILE, path, BUILD_END);
 892
 893                 lib->credmgr->remove_local_set(lib->credmgr, &cb->set);
 894                 cb->destroy(cb);
 895         }
 896         else
 897         {
 898                 mem_cred_t *mem = NULL;
 899                 shared_key_t *shared;
 900
 901                 /* provide our pin in a temporary credential set */
 902                 shared = shared_key_create(SHARED_PRIVATE_KEY_PASS, secret);
 903                 mem = mem_cred_create();
 904                 mem->add_shared(mem, shared, NULL);
 905                 lib->credmgr->add_local_set(lib->credmgr, &mem->set, FALSE);
 906
 907                 *result = lib->creds->create(lib->creds, type, subtype,
 908                                                                          BUILD_FROM_FILE, path, BUILD_END);
 909
 910                 lib->credmgr->remove_local_set(lib->credmgr, &mem->set);
 911                 mem->destroy(mem);
 912         }
 913         return TRUE;
 914 }
 915
 916 /**
 917  * Load a private key
 918  */
 919 static bool load_private(mem_cred_t *secrets, chunk_t line, int line_nr,
 920                                                  FILE *prompt, key_type_t key_type)
 921 {
 922         char path[PATH_MAX];
 923         private_key_t *key;
 924
 925         if (!load_from_file(line, line_nr, prompt, path, CRED_PRIVATE_KEY,
 926                                                 key_type, (void**)&key))
 927         {
 928                 return FALSE;
 929         }
 930         if (key)
 931         {
 932                 DBG1(DBG_CFG, "  loaded %N private key from '%s'",
 933                          key_type_names, key->get_type(key), path);
 934                 secrets->add_key(secrets, key);
 935         }
 936         else
 937         {
 938                 DBG1(DBG_CFG, "  loading private key from '%s' failed", path);
 939         }
 940         return TRUE;
 941 }
 942
 943 /**
 944  * Load a PKCS#12 container
 945  */
 946 static bool load_pkcs12(mem_cred_t *secrets, chunk_t line, int line_nr,
 947                                                 FILE *prompt)
 948 {
 949         enumerator_t *enumerator;
 950         char path[PATH_MAX];
 951         certificate_t *cert;
 952         private_key_t *key;
 953         pkcs12_t *pkcs12;
 954
 955         if (!load_from_file(line, line_nr, prompt, path, CRED_CONTAINER,
 956                                                 CONTAINER_PKCS12, (void**)&pkcs12))
 957         {
 958                 return FALSE;
 959         }
 960         if (!pkcs12)
 961         {
 962                 DBG1(DBG_CFG, "  loading credentials from '%s' failed", path);
 963                 return TRUE;
 964         }
 965         enumerator = pkcs12->create_cert_enumerator(pkcs12);
 966         while (enumerator->enumerate(enumerator, &cert))
 967         {
 968                 x509_t *x509 = (x509_t*)cert;
 969
 970                 if (x509->get_flags(x509) & X509_CA)
 971                 {
 972                         DBG1(DBG_CFG, "  loaded ca certificate \"%Y\" from '%s'",
 973                                  cert->get_subject(cert), path);
 974                 }
 975                 else
 976                 {
 977                         DBG1(DBG_CFG, "  loaded certificate \"%Y\" from '%s'",
 978                                  cert->get_subject(cert), path);
 979                 }
 980                 secrets->add_cert(secrets, TRUE, cert->get_ref(cert));
 981         }
 982         enumerator->destroy(enumerator);
 983         enumerator = pkcs12->create_key_enumerator(pkcs12);
 984         while (enumerator->enumerate(enumerator, &key))
 985         {
 986                 DBG1(DBG_CFG, "  loaded %N private key from '%s'",
 987                          key_type_names, key->get_type(key), path);
 988                 secrets->add_key(secrets, key->get_ref(key));
 989         }
 990         enumerator->destroy(enumerator);
 991         pkcs12->container.destroy(&pkcs12->container);
 992         return TRUE;
 993 }
 994
 995 /**
 996  * Load a shared key
 997  */
 998 static bool load_shared(mem_cred_t *secrets, chunk_t line, int line_nr,
 999                                                 shared_key_type_t type, chunk_t ids)
1000 {
1001         shared_key_t *shared_key;
1002         linked_list_t *owners;
1003         chunk_t secret = chunk_empty;
1004         bool any = TRUE;
1005
1006         err_t ugh = extract_secret(&secret, &line);
1007         if (ugh != NULL)
1008         {
1009                 DBG1(DBG_CFG, "line %d: malformed secret: %s", line_nr, ugh);
1010                 return FALSE;
1011         }
1012         shared_key = shared_key_create(type, secret);
1013         DBG1(DBG_CFG, "  loaded %N secret for %s", shared_key_type_names, type,
1014                  ids.len > 0 ? (char*)ids.ptr : "%any");
1015         DBG4(DBG_CFG, "  secret: %#B", &secret);
1016
1017         owners = linked_list_create();
1018         while (ids.len > 0)
1019         {
1020                 chunk_t id;
1021                 identification_t *peer_id;
1022
1023                 ugh = extract_value(&id, &ids);
1024                 if (ugh != NULL)
1025                 {
1026                         DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
1027                         shared_key->destroy(shared_key);
1028                         owners->destroy_offset(owners, offsetof(identification_t, destroy));
1029                         return FALSE;
1030                 }
1031                 if (id.len == 0)
1032                 {
1033                         continue;
1034                 }
1035
1036                 /* NULL terminate the ID string */
1037                 *(id.ptr + id.len) = '\0';
1038                 peer_id = identification_create_from_string(id.ptr);
1039                 if (peer_id->get_type(peer_id) == ID_ANY)
1040                 {
1041                         peer_id->destroy(peer_id);
1042                         continue;
1043                 }
1044
1045                 owners->insert_last(owners, peer_id);
1046                 any = FALSE;
1047         }
1048         if (any)
1049         {
1050                 owners->insert_last(owners,
1051                                         identification_create_from_encoding(ID_ANY, chunk_empty));
1052         }
1053         secrets->add_shared_list(secrets, shared_key, owners);
1054         return TRUE;
1055 }
1056
1057 /**
1058  * reload ipsec.secrets
1059  */
1060 static void load_secrets(private_stroke_cred_t *this, mem_cred_t *secrets,
1061                                                  char *file, int level, FILE *prompt)
1062 {
1063         int line_nr = 0, fd;
1064         chunk_t src, line;
1065         struct stat sb;
1066         void *addr;
1067
1068         DBG1(DBG_CFG, "loading secrets from '%s'", file);
1069         fd = open(file, O_RDONLY);
1070         if (fd == -1)
1071         {
1072                 DBG1(DBG_CFG, "opening secrets file '%s' failed: %s", file,
1073                          strerror(errno));
1074                 return;
1075         }
1076         if (fstat(fd, &sb) == -1)
1077         {
1078                 DBG1(DBG_LIB, "getting file size of '%s' failed: %s", file,
1079                          strerror(errno));
1080                 close(fd);
1081                 return;
1082         }
1083         if (sb.st_size == 0)
1084         {       /* skip empty files, as mmap() complains */
1085                 close(fd);
1086                 return;
1087         }
1088         addr = mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
1089         if (addr == MAP_FAILED)
1090         {
1091                 DBG1(DBG_LIB, "mapping '%s' failed: %s", file, strerror(errno));
1092                 close(fd);
1093                 return;
1094         }
1095         src = chunk_create(addr, sb.st_size);
1096
1097         if (!secrets)
1098         {
1099                 secrets = mem_cred_create();
1100         }
1101
1102         while (fetchline(&src, &line))
1103         {
1104                 chunk_t ids, token;
1105                 shared_key_type_t type;
1106
1107                 line_nr++;
1108
1109                 if (!eat_whitespace(&line))
1110                 {
1111                         continue;
1112                 }
1113                 if (line.len > strlen("include ") &&
1114                         strneq(line.ptr, "include ", strlen("include ")))
1115                 {
1116                         char **expanded, *dir, pattern[PATH_MAX];
1117                         u_char *pos;
1118
1119                         if (level > MAX_SECRETS_RECURSION)
1120                         {
1121                                 DBG1(DBG_CFG, "maximum level of %d includes reached, ignored",
1122                                          MAX_SECRETS_RECURSION);
1123                                 continue;
1124                         }
1125                         /* terminate filename by space */
1126                         line = chunk_skip(line, strlen("include "));
1127                         pos = memchr(line.ptr, ' ', line.len);
1128                         if (pos)
1129                         {
1130                                 line.len = pos - line.ptr;
1131                         }
1132                         if (line.len && line.ptr[0] == '/')
1133                         {
1134                                 if (line.len + 1 > sizeof(pattern))
1135                                 {
1136                                         DBG1(DBG_CFG, "include pattern too long, ignored");
1137                                         continue;
1138                                 }
1139                                 snprintf(pattern, sizeof(pattern), "%.*s",
1140                                                  (int)line.len, line.ptr);
1141                         }
1142                         else
1143                         {       /* use directory of current file if relative */
1144                                 dir = strdup(file);
1145                                 dir = dirname(dir);
1146
1147                                 if (line.len + 1 + strlen(dir) + 1 > sizeof(pattern))
1148                                 {
1149                                         DBG1(DBG_CFG, "include pattern too long, ignored");
1150                                         free(dir);
1151                                         continue;
1152                                 }
1153                                 snprintf(pattern, sizeof(pattern), "%s/%.*s",
1154                                                  dir, (int)line.len, line.ptr);
1155                                 free(dir);
1156                         }
1157 #ifdef HAVE_GLOB_H
1158                         {
1159                                 glob_t buf;
1160                                 if (glob(pattern, GLOB_ERR, NULL, &buf) != 0)
1161                                 {
1162                                         DBG1(DBG_CFG, "expanding file expression '%s' failed",
1163                                                  pattern);
1164                                 }
1165                                 else
1166                                 {
1167                                         for (expanded = buf.gl_pathv; *expanded != NULL; expanded++)
1168                                         {
1169                                                 load_secrets(this, secrets, *expanded, level + 1,
1170                                                                          prompt);
1171                                         }
1172                                 }
1173                                 globfree(&buf);
1174                         }
1175 #else /* HAVE_GLOB_H */
1176                         /* if glob(3) is not available, try to load pattern directly */
1177                         load_secrets(this, secrets, pattern, level + 1, prompt);
1178 #endif /* HAVE_GLOB_H */
1179                         continue;
1180                 }
1181
1182                 if (line.len > 2 && strneq(": ", line.ptr, 2))
1183                 {
1184                         /* no ids, skip the ':' */
1185                         ids = chunk_empty;
1186                         line.ptr++;
1187                         line.len--;
1188                 }
1189                 else if (extract_token_str(&ids, " : ", &line))
1190                 {
1191                         /* NULL terminate the extracted id string */
1192                         *(ids.ptr + ids.len) = '\0';
1193                 }
1194                 else
1195                 {
1196                         DBG1(DBG_CFG, "line %d: missing ' : ' separator", line_nr);
1197                         break;
1198                 }
1199
1200                 if (!eat_whitespace(&line) || !extract_token(&token, ' ', &line))
1201                 {
1202                         DBG1(DBG_CFG, "line %d: missing token", line_nr);
1203                         break;
1204                 }
1205                 if (match("RSA", &token) || match("ECDSA", &token))
1206                 {
1207                         if (!load_private(secrets, line, line_nr, prompt,
1208                                                           match("RSA", &token) ? KEY_RSA : KEY_ECDSA))
1209                         {
1210                                 break;
1211                         }
1212                 }
1213                 else if (match("P12", &token))
1214                 {
1215                         if (!load_pkcs12(secrets, line, line_nr, prompt))
1216                         {
1217                                 break;
1218                         }
1219                 }
1220                 else if (match("PIN", &token))
1221                 {
1222                         if (!load_pin(secrets, line, line_nr, prompt))
1223                         {
1224                                 break;
1225                         }
1226                 }
1227                 else if ((match("PSK", &token) && (type = SHARED_IKE)) ||
1228                                  (match("EAP", &token) && (type = SHARED_EAP)) ||
1229                                  (match("NTLM", &token) && (type = SHARED_NT_HASH)) ||
1230                                  (match("XAUTH", &token) && (type = SHARED_EAP)))
1231                 {
1232                         if (!load_shared(secrets, line, line_nr, type, ids))
1233                         {
1234                                 break;
1235                         }
1236                 }
1237                 else
1238                 {
1239                         DBG1(DBG_CFG, "line %d: token must be either "
1240                                  "RSA, ECDSA, P12, PIN, PSK, EAP, XAUTH or NTLM", line_nr);
1241                         break;
1242                 }
1243         }
1244         munmap(addr, sb.st_size);
1245         close(fd);
1246
1247         if (level == 0)
1248         {       /* replace secrets in active credential set */
1249                 this->creds->replace_secrets(this->creds, secrets, FALSE);
1250                 secrets->destroy(secrets);
1251         }
1252 }
1253
1254 /**
1255  * load all certificates from ipsec.d
1256  */
1257 static void load_certs(private_stroke_cred_t *this)
1258 {
1259         DBG1(DBG_CFG, "loading ca certificates from '%s'",
1260                  CA_CERTIFICATE_DIR);
1261         load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
1262
1263         DBG1(DBG_CFG, "loading aa certificates from '%s'",
1264                  AA_CERTIFICATE_DIR);
1265         load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
1266
1267         DBG1(DBG_CFG, "loading ocsp signer certificates from '%s'",
1268                  OCSP_CERTIFICATE_DIR);
1269         load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509, X509_OCSP_SIGNER);
1270
1271         DBG1(DBG_CFG, "loading attribute certificates from '%s'",
1272                  ATTR_CERTIFICATE_DIR);
1273         load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
1274
1275         DBG1(DBG_CFG, "loading crls from '%s'",
1276                  CRL_DIR);
1277         load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
1278 }
1279
1280 METHOD(stroke_cred_t, reread, void,
1281         private_stroke_cred_t *this, stroke_msg_t *msg, FILE *prompt)
1282 {
1283         if (msg->reread.flags & REREAD_SECRETS)
1284         {
1285                 DBG1(DBG_CFG, "rereading secrets");
1286                 load_secrets(this, NULL, SECRETS_FILE, 0, prompt);
1287         }
1288         if (msg->reread.flags & REREAD_CACERTS)
1289         {
1290                 DBG1(DBG_CFG, "rereading ca certificates from '%s'",
1291                          CA_CERTIFICATE_DIR);
1292                 load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
1293         }
1294         if (msg->reread.flags & REREAD_OCSPCERTS)
1295         {
1296                 DBG1(DBG_CFG, "rereading ocsp signer certificates from '%s'",
1297                          OCSP_CERTIFICATE_DIR);
1298                 load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509,
1299                          X509_OCSP_SIGNER);
1300         }
1301         if (msg->reread.flags & REREAD_AACERTS)
1302         {
1303                 DBG1(DBG_CFG, "rereading aa certificates from '%s'",
1304                          AA_CERTIFICATE_DIR);
1305                 load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
1306         }
1307         if (msg->reread.flags & REREAD_ACERTS)
1308         {
1309                 DBG1(DBG_CFG, "rereading attribute certificates from '%s'",
1310                          ATTR_CERTIFICATE_DIR);
1311                 load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
1312         }
1313         if (msg->reread.flags & REREAD_CRLS)
1314         {
1315                 DBG1(DBG_CFG, "rereading crls from '%s'",
1316                          CRL_DIR);
1317                 load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
1318         }
1319 }
1320
1321 METHOD(stroke_cred_t, add_shared, void,
1322         private_stroke_cred_t *this, shared_key_t *shared, linked_list_t *owners)
1323 {
1324         this->creds->add_shared_list(this->creds, shared, owners);
1325 }
1326
1327 METHOD(stroke_cred_t, destroy, void,
1328         private_stroke_cred_t *this)
1329 {
1330         lib->credmgr->remove_set(lib->credmgr, &this->creds->set);
1331         this->creds->destroy(this->creds);
1332         free(this);
1333 }
1334
1335 /*
1336  * see header file
1337  */
1338 stroke_cred_t *stroke_cred_create()
1339 {
1340         private_stroke_cred_t *this;
1341
1342         INIT(this,
1343                 .public = {
1344                         .set = {
1345                                 .create_private_enumerator = (void*)return_null,
1346                                 .create_cert_enumerator = (void*)return_null,
1347                                 .create_shared_enumerator = (void*)return_null,
1348                                 .create_cdp_enumerator = (void*)return_null,
1349                                 .cache_cert = (void*)_cache_cert,
1350                         },
1351                         .reread = _reread,
1352                         .load_ca = _load_ca,
1353                         .load_peer = _load_peer,
1354                         .load_pubkey = _load_pubkey,
1355                         .add_shared = _add_shared,
1356                         .cachecrl = _cachecrl,
1357                         .destroy = _destroy,
1358                 },
1359                 .creds = mem_cred_create(),
1360         );
1361
1362         lib->credmgr->add_set(lib->credmgr, &this->creds->set);
1363
1364         this->force_ca_cert = lib->settings->get_bool(lib->settings,
1365                                                 "%s.plugins.stroke.ignore_missing_ca_basic_constraint",
1366                                                 FALSE, charon->name);
1367
1368         load_certs(this);
1369         load_secrets(this, NULL, SECRETS_FILE, 0, NULL);
1370
1371         return &this->public;
1372 }