src/reclaim/gnunet-reclaim.c

   1 /*
   2    This file is part of GNUnet.
   3    Copyright (C) 2012-2015 GNUnet e.V.
   4
   5    GNUnet is free software: you can redistribute it and/or modify it
   6    under the terms of the GNU Affero General Public License as published
   7    by the Free Software Foundation, either version 3 of the License,
   8    or (at your option) any later version.
   9
  10    GNUnet is distributed in the hope that it will be useful, but
  11    WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Affero General Public License for more details.
  14
  15    You should have received a copy of the GNU Affero General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18      SPDX-License-Identifier: AGPL3.0-or-later
  19    */
  20 /**
  21  * @author Martin Schanzenbach
  22  * @file src/reclaim/gnunet-reclaim.c
  23  * @brief Identity Provider utility
  24  *
  25  */
  26
  27 #include "platform.h"
  28 #include "gnunet_util_lib.h"
  29 #include "gnunet_namestore_service.h"
  30 #include "gnunet_reclaim_service.h"
  31 #include "gnunet_identity_service.h"
  32 #include "gnunet_signatures.h"
  33
  34 /**
  35  * return value
  36  */
  37 static int ret;
  38
  39 /**
  40  * List attribute flag
  41  */
  42 static int list;
  43
  44 /**
  45  * Relying party
  46  */
  47 static char* rp;
  48
  49 /**
  50  * The attribute
  51  */
  52 static char* attr_name;
  53
  54 /**
  55  * Attribute value
  56  */
  57 static char* attr_value;
  58
  59 /**
  60  * Attributes to issue
  61  */
  62 static char* issue_attrs;
  63
  64 /**
  65  * Ticket to consume
  66  */
  67 static char* consume_ticket;
  68
  69 /**
  70  * Attribute type
  71  */
  72 static char* type_str;
  73
  74 /**
  75  * Ticket to revoke
  76  */
  77 static char* revoke_ticket;
  78
  79 /**
  80  * Ego name
  81  */
  82 static char* ego_name;
  83
  84 /**
  85  * Identity handle
  86  */
  87 static struct GNUNET_IDENTITY_Handle *identity_handle;
  88
  89 /**
  90  * reclaim handle
  91  */
  92 static struct GNUNET_RECLAIM_Handle *reclaim_handle;
  93
  94 /**
  95  * reclaim operation
  96  */
  97 static struct GNUNET_RECLAIM_Operation *reclaim_op;
  98
  99 /**
 100  * Attribute iterator
 101  */
 102 static struct GNUNET_RECLAIM_AttributeIterator *attr_iterator;
 103
 104 /**
 105  * Master ABE key
 106  */
 107 static struct GNUNET_CRYPTO_AbeMasterKey *abe_key;
 108
 109 /**
 110  * ego private key
 111  */
 112 static const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey;
 113
 114 /**
 115  * rp public key
 116  */
 117 static struct GNUNET_CRYPTO_EcdsaPublicKey rp_key;
 118
 119 /**
 120  * Ticket to consume
 121  */
 122 static struct GNUNET_RECLAIM_Ticket ticket;
 123
 124 /**
 125  * Attribute list
 126  */
 127 static struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attr_list;
 128
 129 /**
 130  * Attribute expiration interval
 131  */
 132 static struct GNUNET_TIME_Relative exp_interval;
 133
 134 /**
 135  * Timeout task
 136  */
 137 static struct GNUNET_SCHEDULER_Task *timeout;
 138
 139 /**
 140  * Cleanup task
 141  */
 142 static struct GNUNET_SCHEDULER_Task *cleanup_task;
 143
 144 /**
 145  * Claim to store
 146  */
 147 struct GNUNET_RECLAIM_ATTRIBUTE_Claim *claim;
 148
 149 static void
 150 do_cleanup(void *cls)
 151 {
 152   cleanup_task = NULL;
 153   if (NULL != timeout)
 154     GNUNET_SCHEDULER_cancel (timeout);
 155   if (NULL != reclaim_op)
 156     GNUNET_RECLAIM_cancel (reclaim_op);
 157   if (NULL != attr_iterator)
 158     GNUNET_RECLAIM_get_attributes_stop (attr_iterator);
 159   if (NULL != reclaim_handle)
 160     GNUNET_RECLAIM_disconnect (reclaim_handle);
 161   if (NULL != identity_handle)
 162     GNUNET_IDENTITY_disconnect (identity_handle);
 163   if (NULL != abe_key)
 164     GNUNET_free (abe_key);
 165   if (NULL != attr_list)
 166     GNUNET_free (attr_list);
 167 }
 168
 169 static void
 170 ticket_issue_cb (void* cls,
 171                  const struct GNUNET_RECLAIM_Ticket *ticket)
 172 {
 173   char* ticket_str;
 174   reclaim_op = NULL;
 175   if (NULL != ticket) {
 176     ticket_str = GNUNET_STRINGS_data_to_string_alloc (ticket,
 177                                                       sizeof (struct GNUNET_RECLAIM_Ticket));
 178     printf("%s\n",
 179            ticket_str);
 180     GNUNET_free (ticket_str);
 181   }
 182   cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 183 }
 184
 185 static void
 186 store_attr_cont (void *cls,
 187                  int32_t success,
 188                  const char*emsg)
 189 {
 190   reclaim_op = NULL;
 191   if (GNUNET_SYSERR == success) {
 192     fprintf (stderr,
 193              "%s\n", emsg);
 194   }
 195   cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 196 }
 197
 198 static void
 199 process_attrs (void *cls,
 200          const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
 201          const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
 202 {
 203   char *value_str;
 204   const char* attr_type;
 205
 206   if (NULL == identity)
 207   {
 208     reclaim_op = NULL;
 209     cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 210     return;
 211   }
 212   if (NULL == attr)
 213   {
 214     ret = 1;
 215     return;
 216   }
 217   value_str = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (attr->type,
 218                                                         attr->data,
 219                                                         attr->data_size);
 220   attr_type = GNUNET_RECLAIM_ATTRIBUTE_number_to_typename (attr->type);
 221   fprintf (stdout,
 222            "%s: %s [%s,v%u]\n", attr->name, value_str, attr_type, attr->version);
 223 }
 224
 225
 226 static void
 227 iter_error (void *cls)
 228 {
 229   attr_iterator = NULL;
 230   fprintf (stderr,
 231            "Failed to iterate over attributes\n");
 232   cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 233 }
 234
 235 static void
 236 timeout_task (void *cls)
 237 {
 238   timeout = NULL;
 239   ret = 1;
 240   fprintf (stderr,
 241            "Timeout\n");
 242   if (NULL == cleanup_task)
 243     cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 244 }
 245
 246 static void
 247 process_rvk (void *cls, int success, const char* msg)
 248 {
 249   reclaim_op = NULL;
 250   if (GNUNET_OK != success)
 251   {
 252     fprintf (stderr,
 253              "Revocation failed.\n");
 254     ret = 1;
 255   }
 256   cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 257 }
 258
 259 static void
 260 iter_finished (void *cls)
 261 {
 262   char *data;
 263   size_t data_size;
 264   int type;
 265
 266   attr_iterator = NULL;
 267   if (list)
 268   {
 269     cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 270     return;
 271   }
 272
 273   if (issue_attrs)
 274   {
 275     reclaim_op = GNUNET_RECLAIM_ticket_issue (reclaim_handle,
 276                                               pkey,
 277                                               &rp_key,
 278                                               attr_list,
 279                                               &ticket_issue_cb,
 280                                               NULL);
 281     return;
 282   }
 283   if (consume_ticket)
 284   {
 285     reclaim_op = GNUNET_RECLAIM_ticket_consume (reclaim_handle,
 286                                                 pkey,
 287                                                 &ticket,
 288                                                 &process_attrs,
 289                                                 NULL);
 290     timeout = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 10),
 291                                             &timeout_task,
 292                                             NULL);
 293     return;
 294   }
 295   if (revoke_ticket)
 296   {
 297     reclaim_op = GNUNET_RECLAIM_ticket_revoke (reclaim_handle,
 298                                                pkey,
 299                                                &ticket,
 300                                                &process_rvk,
 301                                                NULL);
 302     return;
 303   }
 304   if (attr_name)
 305   {
 306     if (NULL == type_str)
 307       type = GNUNET_RECLAIM_ATTRIBUTE_TYPE_STRING;
 308     else
 309       type = GNUNET_RECLAIM_ATTRIBUTE_typename_to_number (type_str);
 310
 311     GNUNET_assert (GNUNET_SYSERR != GNUNET_RECLAIM_ATTRIBUTE_string_to_value (type,
 312                                                                               attr_value,
 313                                                                               (void**)&data,
 314                                                                               &data_size));
 315     if (NULL != claim)
 316     {
 317       claim->type = type;
 318       claim->data = data;
 319       claim->data_size = data_size;
 320     }
 321     else
 322     {
 323       claim = GNUNET_RECLAIM_ATTRIBUTE_claim_new (attr_name,
 324                                                   type,
 325                                                   data,
 326                                                   data_size);
 327     }
 328     reclaim_op = GNUNET_RECLAIM_attribute_store (reclaim_handle,
 329                                                  pkey,
 330                                                  claim,
 331                                                  &exp_interval,
 332                                                  &store_attr_cont,
 333                                                  NULL);
 334     GNUNET_free (data);
 335     GNUNET_free (claim);
 336     return;
 337   }
 338   cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 339 }
 340
 341 static void
 342 iter_cb (void *cls,
 343          const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
 344          const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
 345 {
 346   struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *le;
 347   char *attrs_tmp;
 348   char *attr_str;
 349   const char *attr_type;
 350
 351   if ((NULL != attr_name) && (NULL != claim))
 352   {
 353     if (0 == strcasecmp (attr_name, attr->name))
 354     {
 355       claim = GNUNET_RECLAIM_ATTRIBUTE_claim_new (attr->name,
 356                                                             attr->type,
 357                                                             attr->data,
 358                                                             attr->data_size);
 359     }
 360   }
 361   else if (issue_attrs)
 362   {
 363     attrs_tmp = GNUNET_strdup (issue_attrs);
 364     attr_str = strtok (attrs_tmp, ",");
 365     while (NULL != attr_str) {
 366       if (0 != strcasecmp (attr_str, attr->name)) {
 367         attr_str = strtok (NULL, ",");
 368         continue;
 369       }
 370       le = GNUNET_new (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry);
 371       le->claim = GNUNET_RECLAIM_ATTRIBUTE_claim_new (attr->name,
 372                                                       attr->type,
 373                                                       attr->data,
 374                                                       attr->data_size);
 375       le->claim->version = attr->version;
 376       GNUNET_CONTAINER_DLL_insert (attr_list->list_head,
 377                                    attr_list->list_tail,
 378                                    le);
 379       break;
 380     }
 381     GNUNET_free (attrs_tmp);
 382   }
 383   else if (list)
 384   {
 385     attr_str = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (attr->type,
 386                                                          attr->data,
 387                                                          attr->data_size);
 388     attr_type = GNUNET_RECLAIM_ATTRIBUTE_number_to_typename (attr->type);
 389     fprintf (stdout,
 390              "%s: %s [%s,v%u]\n", attr->name, attr_str, attr_type, attr->version);
 391   }
 392   GNUNET_RECLAIM_get_attributes_next (attr_iterator);
 393 }
 394
 395 static void
 396 start_get_attributes ()
 397 {
 398   if (NULL == pkey)
 399   {
 400     fprintf (stderr,
 401              "Ego %s not found\n", ego_name);
 402     cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup, NULL);
 403     return;
 404   }
 405
 406   if (NULL != rp)
 407     GNUNET_CRYPTO_ecdsa_public_key_from_string (rp,
 408                                                 strlen (rp),
 409                                                 &rp_key);
 410   if (NULL != consume_ticket)
 411     GNUNET_STRINGS_string_to_data (consume_ticket,
 412                                    strlen (consume_ticket),
 413                                    &ticket,
 414                                    sizeof (struct GNUNET_RECLAIM_Ticket));
 415   if (NULL != revoke_ticket)
 416     GNUNET_STRINGS_string_to_data (revoke_ticket,
 417                                    strlen (revoke_ticket),
 418                                    &ticket,
 419                                    sizeof (struct GNUNET_RECLAIM_Ticket));
 420
 421   attr_list = GNUNET_new (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList);
 422   claim = NULL;
 423   attr_iterator = GNUNET_RECLAIM_get_attributes_start (reclaim_handle,
 424                                                        pkey,
 425                                                        &iter_error,
 426                                                        NULL,
 427                                                        &iter_cb,
 428                                                        NULL,
 429                                                        &iter_finished,
 430                                                        NULL);
 431
 432
 433 }
 434
 435 static int init = GNUNET_YES;
 436
 437 static void
 438 ego_cb (void *cls,
 439         struct GNUNET_IDENTITY_Ego *ego,
 440         void **ctx,
 441         const char *name)
 442 {
 443   if (NULL == name) {
 444     if (GNUNET_YES == init) {
 445       init = GNUNET_NO;
 446       start_get_attributes();
 447     }
 448     return;
 449   }
 450   if (0 != strcmp (name, ego_name))
 451     return;
 452   pkey = GNUNET_IDENTITY_ego_get_private_key (ego);
 453 }
 454
 455
 456 static void
 457 run (void *cls,
 458      char *const *args,
 459      const char *cfgfile,
 460      const struct GNUNET_CONFIGURATION_Handle *c)
 461 {
 462   ret = 0;
 463   if (NULL == ego_name)
 464   {
 465     ret = 1;
 466     fprintf (stderr,
 467              _("Ego is required\n"));
 468     return;
 469   }
 470
 471   if ( (NULL == attr_value) && (NULL != attr_name) )
 472   {
 473     ret = 1;
 474     fprintf (stderr,
 475              _("Attribute value missing!\n"));
 476     return;
 477   }
 478
 479   if ( (NULL == rp) && (NULL != issue_attrs) )
 480   {
 481     ret = 1;
 482     fprintf (stderr,
 483              _("Requesting party key is required!\n"));
 484     return;
 485   }
 486
 487   reclaim_handle = GNUNET_RECLAIM_connect (c);
 488   //Get Ego
 489   identity_handle = GNUNET_IDENTITY_connect (c,
 490                                              &ego_cb,
 491                                              NULL);
 492
 493
 494 }
 495
 496
 497 int
 498 main(int argc, char *const argv[])
 499 {
 500   exp_interval = GNUNET_TIME_UNIT_HOURS;
 501   struct GNUNET_GETOPT_CommandLineOption options[] = {
 502
 503     GNUNET_GETOPT_option_string ('a',
 504                                  "add",
 505                                  NULL,
 506                                  gettext_noop ("Add attribute"),
 507                                  &attr_name),
 508
 509     GNUNET_GETOPT_option_string ('V',
 510                                  "value",
 511                                  NULL,
 512                                  gettext_noop ("Attribute value"),
 513                                  &attr_value),
 514     GNUNET_GETOPT_option_string ('e',
 515                                  "ego",
 516                                  NULL,
 517                                  gettext_noop ("Ego"),
 518                                  &ego_name),
 519     GNUNET_GETOPT_option_string ('r',
 520                                  "rp",
 521                                  NULL,
 522                                  gettext_noop ("Audience (relying party)"),
 523                                  &rp),
 524     GNUNET_GETOPT_option_flag ('D',
 525                                "dump",
 526                                gettext_noop ("List attributes for Ego"),
 527                                &list),
 528     GNUNET_GETOPT_option_string ('i',
 529                                  "issue",
 530                                  NULL,
 531                                  gettext_noop ("Issue a ticket"),
 532                                  &issue_attrs),
 533     GNUNET_GETOPT_option_string ('C',
 534                                  "consume",
 535                                  NULL,
 536                                  gettext_noop ("Consume a ticket"),
 537                                  &consume_ticket),
 538     GNUNET_GETOPT_option_string ('R',
 539                                  "revoke",
 540                                  NULL,
 541                                  gettext_noop ("Revoke a ticket"),
 542                                  &revoke_ticket),
 543     GNUNET_GETOPT_option_string ('t',
 544                                  "type",
 545                                  NULL,
 546                                  gettext_noop ("Type of attribute"),
 547                                  &type_str),
 548     GNUNET_GETOPT_option_relative_time ('E',
 549                                         "expiration",
 550                                         NULL,
 551                                         gettext_noop ("Expiration interval of the attribute"),
 552                                         &exp_interval),
 553
 554     GNUNET_GETOPT_OPTION_END
 555   };
 556   if (GNUNET_OK != GNUNET_PROGRAM_run (argc, argv, "ct",
 557                                        "ct", options,
 558                                        &run, NULL))
 559     return 1;
 560   else
 561     return ret;
 562 }