keydb_db3.c

   1 /*
   2  * keydb_db3.c - Routines to store and fetch keys in a DB3 database.
   3  *
   4  * Jonathan McDowell <noodles@earth.li>
   5  *
   6  * Copyright 2002 Project Purple
   7  *
   8  * $Id: keydb_db3.c,v 1.26 2004/05/27 03:33:24 noodles Exp $
   9  */
  10
  11 #include <assert.h>
  12 #include <sys/types.h>
  13 #include <sys/uio.h>
  14 #include <ctype.h>
  15 #include <errno.h>
  16 #include <fcntl.h>
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <string.h>
  20 #include <unistd.h>
  21
  22 #include <db.h>
  23
  24 #include "charfuncs.h"
  25 #include "keydb.h"
  26 #include "keyid.h"
  27 #include "decodekey.h"
  28 #include "keystructs.h"
  29 #include "mem.h"
  30 #include "log.h"
  31 #include "onak-conf.h"
  32 #include "parsekey.h"
  33 #include "wordlist.h"
  34
  35 /**
  36  *      dbenv - our database environment.
  37  */
  38 static DB_ENV *dbenv = NULL;
  39
  40 /**
  41  *      numdb - The number of database files we have.
  42  */
  43 static int numdbs = 16;
  44
  45 /**
  46  *      dbconn - our connections to the key database files.
  47  */
  48 static DB **dbconns = NULL;
  49
  50 /**
  51  *      worddb - our connection to the word database.
  52  */
  53 static DB *worddb = NULL;
  54
  55 /**
  56  *      id32db - our connection to the 32bit ID database.
  57  */
  58 static DB *id32db = NULL;
  59
  60 /**
  61  *      txn - our current transaction id.
  62  */
  63 static DB_TXN *txn = NULL;
  64
  65 DB *keydb(uint64_t keyid)
  66 {
  67         uint64_t keytrun;
  68
  69         keytrun = keyid >> 8;
  70
  71         return(dbconns[keytrun % numdbs]);
  72 }
  73
  74 /**
  75  *      initdb - Initialize the key database.
  76  *
  77  *      This function should be called before any of the other functions in
  78  *      this file are called in order to allow the DB to be initialized ready
  79  *      for access.
  80  */
  81 void initdb(bool readonly)
  82 {
  83         char       buf[1024];
  84         FILE      *numdb = NULL;
  85         int        ret = 0;
  86         int        i = 0;
  87         u_int32_t  flags = 0;
  88
  89         snprintf(buf, sizeof(buf) - 1, "%s/num_keydb", config.db_dir);
  90         numdb = fopen(buf, "r");
  91         if (numdb != NULL) {
  92                 if (fgets(buf, sizeof(buf), numdb) != NULL) {
  93                         numdbs = atoi(buf);
  94                 }
  95                 fclose(numdb);
  96         } else if (!readonly) {
  97                 logthing(LOGTHING_ERROR, "Couldn't open num_keydb: %s",
  98                                 strerror(errno));
  99                 numdb = fopen(buf, "w");
 100                 if (numdb != NULL) {
 101                         fprintf(numdb, "%d", numdbs);
 102                         fclose(numdb);
 103                 } else {
 104                         logthing(LOGTHING_ERROR,
 105                                 "Couldn't write num_keydb: %s",
 106                                 strerror(errno));
 107                 }
 108         }
 109
 110         dbconns = malloc(sizeof (DB *) * numdbs);
 111         if (dbconns == NULL) {
 112                 logthing(LOGTHING_CRITICAL,
 113                                 "Couldn't allocate memory for dbconns");
 114                 exit(1);
 115         }
 116
 117         ret = db_env_create(&dbenv, 0);
 118         if (ret != 0) {
 119                 logthing(LOGTHING_CRITICAL,
 120                         "db_env_create: %s", db_strerror(ret));
 121                 exit(1);
 122         }
 123
 124         /*
 125          * Enable deadlock detection so that we don't block indefinitely on
 126          * anything. What we really want is simple 2 state locks, but I'm not
 127          * sure how to make the standard DB functions do that yet.
 128          */
 129         ret = dbenv->set_lk_detect(dbenv, DB_LOCK_DEFAULT);
 130         if (ret != 0) {
 131                 logthing(LOGTHING_CRITICAL,
 132                         "db_env_create: %s", db_strerror(ret));
 133                 exit(1);
 134         }
 135
 136         ret = dbenv->open(dbenv, config.db_dir,
 137                         DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_LOCK |
 138                         DB_INIT_TXN |
 139                         DB_CREATE,
 140                         0);
 141         if (ret != 0) {
 142                 logthing(LOGTHING_CRITICAL,
 143                                 "Error opening db environment: %s (%s)",
 144                                 config.db_dir,
 145                                 db_strerror(ret));
 146                 exit(1);
 147         }
 148
 149         for (i = 0; i < numdbs; i++) {
 150                 ret = db_create(&dbconns[i], dbenv, 0);
 151                 if (ret != 0) {
 152                         logthing(LOGTHING_CRITICAL,
 153                                 "db_create: %s", db_strerror(ret));
 154                         exit(1);
 155                 }
 156
 157                 snprintf(buf, 1023, "keydb.%d.db", i);
 158                 flags = DB_CREATE;
 159                 if (readonly) {
 160                         flags = DB_RDONLY;
 161                 }
 162                 ret = dbconns[i]->open(dbconns[i], buf,
 163                         NULL,
 164                         DB_HASH,
 165                         flags,
 166                         0664);
 167                 if (ret != 0) {
 168                         logthing(LOGTHING_CRITICAL,
 169                                 "Error opening key database: %s (%s)",
 170                                 buf,
 171                                 db_strerror(ret));
 172                         exit(1);
 173                 }
 174         }
 175
 176         ret = db_create(&worddb, dbenv, 0);
 177         if (ret != 0) {
 178                 logthing(LOGTHING_CRITICAL, "db_create: %s", db_strerror(ret));
 179                 exit(1);
 180         }
 181         ret = worddb->set_flags(worddb, DB_DUP);
 182
 183         ret = worddb->open(worddb, "worddb", NULL, DB_BTREE,
 184                         flags,
 185                         0664);
 186         if (ret != 0) {
 187                 logthing(LOGTHING_CRITICAL,
 188                                 "Error opening word database: %s (%s)",
 189                                 "worddb",
 190                                 db_strerror(ret));
 191                 exit(1);
 192         }
 193
 194         ret = db_create(&id32db, dbenv, 0);
 195         if (ret != 0) {
 196                 logthing(LOGTHING_CRITICAL, "db_create: %s", db_strerror(ret));
 197                 exit(1);
 198         }
 199         ret = id32db->set_flags(id32db, DB_DUP);
 200
 201         ret = id32db->open(id32db, "id32db", NULL, DB_HASH,
 202                         flags,
 203                         0664);
 204         if (ret != 0) {
 205                 logthing(LOGTHING_CRITICAL,
 206                                 "Error opening id32 database: %s (%s)",
 207                                 "id32db",
 208                                 db_strerror(ret));
 209                 exit(1);
 210         }
 211
 212         return;
 213 }
 214
 215 /**
 216  *      cleanupdb - De-initialize the key database.
 217  *
 218  *      This function should be called upon program exit to allow the DB to
 219  *      cleanup after itself.
 220  */
 221 void cleanupdb(void)
 222 {
 223         int i = 0;
 224
 225         txn_checkpoint(dbenv, 0, 0, 0);
 226         id32db->close(id32db, 0);
 227         id32db = NULL;
 228         worddb->close(worddb, 0);
 229         worddb = NULL;
 230         for (i = 0; i < numdbs; i++) {
 231                 dbconns[i]->close(dbconns[i], 0);
 232                 dbconns[i] = NULL;
 233         }
 234         dbenv->close(dbenv, 0);
 235         dbenv = NULL;
 236 }
 237
 238 /**
 239  *      starttrans - Start a transaction.
 240  *
 241  *      Start a transaction. Intended to be used if we're about to perform many
 242  *      operations on the database to help speed it all up, or if we want
 243  *      something to only succeed if all relevant operations are successful.
 244  */
 245 bool starttrans(void)
 246 {
 247         int ret;
 248
 249         assert(dbenv != NULL);
 250         assert(txn == NULL);
 251
 252         ret = txn_begin(dbenv,
 253                 NULL, /* No parent transaction */
 254                 &txn,
 255                 0);
 256         if (ret != 0) {
 257                 logthing(LOGTHING_CRITICAL,
 258                                 "Error starting transaction: %s",
 259                                 db_strerror(ret));
 260                 exit(1);
 261         }
 262
 263         return true;
 264 }
 265
 266 /**
 267  *      endtrans - End a transaction.
 268  *
 269  *      Ends a transaction.
 270  */
 271 void endtrans(void)
 272 {
 273         int ret;
 274
 275         assert(dbenv != NULL);
 276         assert(txn != NULL);
 277
 278         ret = txn_commit(txn,
 279                 0);
 280         if (ret != 0) {
 281                 logthing(LOGTHING_CRITICAL,
 282                                 "Error ending transaction: %s",
 283                                 db_strerror(ret));
 284                 exit(1);
 285         }
 286         txn = NULL;
 287
 288         return;
 289 }
 290
 291 /**
 292  *      fetch_key - Given a keyid fetch the key from storage.
 293  *      @keyid: The keyid to fetch.
 294  *      @publickey: A pointer to a structure to return the key in.
 295  *      @intrans: If we're already in a transaction.
 296  *
 297  *      We use the hex representation of the keyid as the filename to fetch the
 298  *      key from. The key is stored in the file as a binary OpenPGP stream of
 299  *      packets, so we can just use read_openpgp_stream() to read the packets
 300  *      in and then parse_keys() to parse the packets into a publickey
 301  *      structure.
 302  */
 303 int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey,
 304                 bool intrans)
 305 {
 306         struct openpgp_packet_list *packets = NULL;
 307         DBT key, data;
 308         int ret = 0;
 309         int numkeys = 0;
 310         struct buffer_ctx fetchbuf;
 311
 312         if (keyid < 0x100000000LL) {
 313                 keyid = getfullkeyid(keyid);
 314         }
 315
 316         memset(&key, 0, sizeof(key));
 317         memset(&data, 0, sizeof(data));
 318
 319         data.size = 0;
 320         data.data = NULL;
 321
 322         key.size = sizeof(keyid);
 323         key.data = &keyid;
 324
 325         if (!intrans) {
 326                 starttrans();
 327         }
 328
 329         ret = keydb(keyid)->get(keydb(keyid),
 330                         txn,
 331                         &key,
 332                         &data,
 333                         0); /* flags*/
 334
 335         if (ret == 0) {
 336                 fetchbuf.buffer = data.data;
 337                 fetchbuf.offset = 0;
 338                 fetchbuf.size = data.size;
 339                 read_openpgp_stream(buffer_fetchchar, &fetchbuf,
 340                                 &packets, 0);
 341                 parse_keys(packets, publickey);
 342                 free_packet_list(packets);
 343                 packets = NULL;
 344                 numkeys++;
 345         } else if (ret != DB_NOTFOUND) {
 346                 logthing(LOGTHING_ERROR,
 347                                 "Problem retrieving key: %s",
 348                                 db_strerror(ret));
 349         }
 350
 351         if (!intrans) {
 352                 endtrans();
 353         }
 354
 355         return (numkeys);
 356 }
 357
 358 int worddb_cmp(const char *d1, const char *d2)
 359 {
 360         return memcmp(d1, d2, 12);
 361 }
 362
 363 /**
 364  *      fetch_key_text - Trys to find the keys that contain the supplied text.
 365  *      @search: The text to search for.
 366  *      @publickey: A pointer to a structure to return the key in.
 367  *
 368  *      This function searches for the supplied text and returns the keys that
 369  *      contain it.
 370  */
 371 int fetch_key_text(const char *search, struct openpgp_publickey **publickey)
 372 {
 373         DBC *cursor = NULL;
 374         DBT key, data;
 375         int ret;
 376         uint64_t keyid;
 377         int i;
 378         int numkeys;
 379         char *searchtext = NULL;
 380         struct ll *wordlist = NULL;
 381         struct ll *curword = NULL;
 382         struct ll *keylist = NULL;
 383         struct ll *newkeylist = NULL;
 384
 385         numkeys = 0;
 386         searchtext = strdup(search);
 387         wordlist = makewordlist(wordlist, searchtext);
 388
 389         starttrans();
 390
 391         ret = worddb->cursor(worddb,
 392                         txn,
 393                         &cursor,
 394                         0);   /* flags */
 395
 396         for (curword = wordlist; curword != NULL; curword = curword->next) {
 397                 memset(&key, 0, sizeof(key));
 398                 memset(&data, 0, sizeof(data));
 399                 key.data = curword->object;
 400                 key.size = strlen(curword->object);
 401                 data.flags = DB_DBT_MALLOC;
 402                 ret = cursor->c_get(cursor,
 403                                 &key,
 404                                 &data,
 405                                 DB_SET);
 406                 while (ret == 0 && strncmp(key.data, curword->object,
 407                                         key.size) == 0 &&
 408                                 ((char *) curword->object)[key.size] == 0) {
 409                         keyid = 0;
 410                         for (i = 4; i < 12; i++) {
 411                                 keyid <<= 8;
 412                                 keyid += ((unsigned char *)
 413                                                 data.data)[i];
 414                         }
 415
 416                         if (keylist == NULL ||
 417                                         llfind(keylist, data.data,
 418                                                 worddb_cmp) != NULL) {
 419                                 newkeylist = lladd(newkeylist, data.data);
 420                                 data.data = NULL;
 421                         } else {
 422                                 free(data.data);
 423                                 data.data = NULL;
 424                         }
 425                         ret = cursor->c_get(cursor,
 426                                         &key,
 427                                         &data,
 428                                         DB_NEXT);
 429                 }
 430                 llfree(keylist, free);
 431                 keylist = newkeylist;
 432                 newkeylist = NULL;
 433                 if (data.data != NULL) {
 434                         free(data.data);
 435                         data.data = NULL;
 436                 }
 437         }
 438         llfree(wordlist, NULL);
 439         wordlist = NULL;
 440
 441         for (newkeylist = keylist;
 442                         newkeylist != NULL && numkeys < config.maxkeys;
 443                         newkeylist = newkeylist->next) {
 444
 445                         keyid = 0;
 446                         for (i = 4; i < 12; i++) {
 447                                 keyid <<= 8;
 448                                 keyid += ((unsigned char *)
 449                                                 newkeylist->object)[i];
 450                         }
 451
 452                         numkeys += fetch_key(keyid,
 453                                         publickey,
 454                                         true);
 455         }
 456         llfree(keylist, free);
 457         keylist = NULL;
 458         free(searchtext);
 459         searchtext = NULL;
 460
 461         ret = cursor->c_close(cursor);
 462         cursor = NULL;
 463
 464         endtrans();
 465
 466         return (numkeys);
 467 }
 468
 469 /**
 470  *      store_key - Takes a key and stores it.
 471  *      @publickey: A pointer to the public key to store.
 472  *      @intrans: If we're already in a transaction.
 473  *      @update: If true the key exists and should be updated.
 474  *
 475  *      Again we just use the hex representation of the keyid as the filename
 476  *      to store the key to. We flatten the public key to a list of OpenPGP
 477  *      packets and then use write_openpgp_stream() to write the stream out to
 478  *      the file. If update is true then we delete the old key first, otherwise
 479  *      we trust that it doesn't exist.
 480  */
 481 int store_key(struct openpgp_publickey *publickey, bool intrans, bool update)
 482 {
 483         struct     openpgp_packet_list *packets = NULL;
 484         struct     openpgp_packet_list *list_end = NULL;
 485         struct     openpgp_publickey *next = NULL;
 486         int        ret = 0;
 487         int        i = 0;
 488         struct     buffer_ctx storebuf;
 489         DBT        key;
 490         DBT        data;
 491         uint64_t   keyid = 0;
 492         uint32_t   shortkeyid = 0;
 493         char     **uids = NULL;
 494         char      *primary = NULL;
 495         unsigned char worddb_data[12];
 496         struct ll *wordlist = NULL;
 497         struct ll *curword  = NULL;
 498         bool       deadlock = false;
 499
 500         keyid = get_keyid(publickey);
 501
 502         if (!intrans) {
 503                 starttrans();
 504         }
 505
 506         /*
 507          * Delete the key if we already have it.
 508          *
 509          * TODO: Can we optimize this perhaps? Possibly when other data is
 510          * involved as well? I suspect this is easiest and doesn't make a lot
 511          * of difference though - the largest chunk of data is the keydata and
 512          * it definitely needs updated.
 513          */
 514         if (update) {
 515                 deadlock = (delete_key(keyid, true) == -1);
 516         }
 517
 518         /*
 519          * Convert the key to a flat set of binary data.
 520          */
 521         if (!deadlock) {
 522                 next = publickey->next;
 523                 publickey->next = NULL;
 524                 flatten_publickey(publickey, &packets, &list_end);
 525                 publickey->next = next;
 526
 527                 storebuf.offset = 0;
 528                 storebuf.size = 8192;
 529                 storebuf.buffer = malloc(8192);
 530
 531                 write_openpgp_stream(buffer_putchar, &storebuf, packets);
 532
 533                 /*
 534                  * Now we have the key data store it in the DB; the keyid is
 535                  * the key.
 536                  */
 537                 memset(&key, 0, sizeof(key));
 538                 memset(&data, 0, sizeof(data));
 539                 key.data = &keyid;
 540                 key.size = sizeof(keyid);
 541                 data.size = storebuf.offset;
 542                 data.data = storebuf.buffer;
 543
 544                 ret = keydb(keyid)->put(keydb(keyid),
 545                                 txn,
 546                                 &key,
 547                                 &data,
 548                                 0); /* flags*/
 549                 if (ret != 0) {
 550                         logthing(LOGTHING_ERROR,
 551                                         "Problem storing key: %s",
 552                                         db_strerror(ret));
 553                         if (ret == DB_LOCK_DEADLOCK) {
 554                                 deadlock = true;
 555                         }
 556                 }
 557
 558                 free(storebuf.buffer);
 559                 storebuf.buffer = NULL;
 560                 storebuf.size = 0;
 561                 storebuf.offset = 0;
 562
 563                 free_packet_list(packets);
 564                 packets = NULL;
 565         }
 566
 567         /*
 568          * Walk through our uids storing the words into the db with the keyid.
 569          */
 570         if (!deadlock) {
 571                 uids = keyuids(publickey, &primary);
 572         }
 573         if (uids != NULL) {
 574                 for (i = 0; ret == 0 && uids[i] != NULL; i++) {
 575                         wordlist = makewordlist(wordlist, uids[i]);
 576                 }
 577
 578                 for (curword = wordlist; curword != NULL && !deadlock;
 579                                 curword = curword->next) {
 580                         memset(&key, 0, sizeof(key));
 581                         memset(&data, 0, sizeof(data));
 582                         key.data = curword->object;
 583                         key.size = strlen(key.data);
 584                         data.data = worddb_data;
 585                         data.size = sizeof(worddb_data);
 586
 587                         /*
 588                          * Our data is the key creation time followed by the
 589                          * key id.
 590                          */
 591                         worddb_data[ 0] = publickey->publickey->data[1];
 592                         worddb_data[ 1] = publickey->publickey->data[2];
 593                         worddb_data[ 2] = publickey->publickey->data[3];
 594                         worddb_data[ 3] = publickey->publickey->data[4];
 595                         worddb_data[ 4] = (keyid >> 56) & 0xFF;
 596                         worddb_data[ 5] = (keyid >> 48) & 0xFF;
 597                         worddb_data[ 6] = (keyid >> 40) & 0xFF;
 598                         worddb_data[ 7] = (keyid >> 32) & 0xFF;
 599                         worddb_data[ 8] = (keyid >> 24) & 0xFF;
 600                         worddb_data[ 9] = (keyid >> 16) & 0xFF;
 601                         worddb_data[10] = (keyid >>  8) & 0xFF;
 602                         worddb_data[11] = keyid & 0xFF;
 603                         ret = worddb->put(worddb,
 604                                 txn,
 605                                 &key,
 606                                 &data,
 607                                 0);
 608                         if (ret != 0) {
 609                                 logthing(LOGTHING_ERROR,
 610                                         "Problem storing word: %s",
 611                                         db_strerror(ret));
 612                                 if (ret == DB_LOCK_DEADLOCK) {
 613                                         deadlock = true;
 614                                 }
 615                         }
 616                 }
 617
 618                 /*
 619                  * Free our UID and word lists.
 620                  */
 621                 llfree(wordlist, NULL);
 622                 for (i = 0; uids[i] != NULL; i++) {
 623                         free(uids[i]);
 624                         uids[i] = NULL;
 625                 }
 626                 free(uids);
 627                 uids = NULL;
 628         }
 629
 630         if (!intrans) {
 631                 endtrans();
 632         }
 633
 634         /*
 635          * Write the truncated 32 bit keyid so we can lookup the full id for
 636          * queries.
 637          */
 638         if (!deadlock) {
 639                 shortkeyid = keyid & 0xFFFFFFFF;
 640
 641                 memset(&key, 0, sizeof(key));
 642                 memset(&data, 0, sizeof(data));
 643                 key.data = &shortkeyid;
 644                 key.size = sizeof(shortkeyid);
 645                 data.data = &keyid;
 646                 data.size = sizeof(keyid);
 647
 648                 ret = id32db->put(id32db,
 649                         txn,
 650                         &key,
 651                         &data,
 652                         0);
 653                 if (ret != 0) {
 654                         logthing(LOGTHING_ERROR,
 655                                 "Problem storing short keyid: %s",
 656                                 db_strerror(ret));
 657                         if (ret == DB_LOCK_DEADLOCK) {
 658                                 deadlock = true;
 659                         }
 660                 }
 661         }
 662
 663         return deadlock ? -1 : 0 ;
 664 }
 665
 666 /**
 667  *      delete_key - Given a keyid delete the key from storage.
 668  *      @keyid: The keyid to delete.
 669  *      @intrans: If we're already in a transaction.
 670  *
 671  *      This function deletes a public key from whatever storage mechanism we
 672  *      are using. Returns 0 if the key existed.
 673  */
 674 int delete_key(uint64_t keyid, bool intrans)
 675 {
 676         struct openpgp_publickey *publickey = NULL;
 677         DBT key, data;
 678         DBC *cursor = NULL;
 679         uint32_t   shortkeyid = 0;
 680         int ret = 0;
 681         int i;
 682         char **uids = NULL;
 683         char *primary = NULL;
 684         unsigned char worddb_data[12];
 685         struct ll *wordlist = NULL;
 686         struct ll *curword  = NULL;
 687         bool deadlock = false;
 688
 689         if (!intrans) {
 690                 starttrans();
 691         }
 692
 693         fetch_key(keyid, &publickey, true);
 694
 695         /*
 696          * Walk through the uids removing the words from the worddb.
 697          */
 698         if (publickey != NULL) {
 699                 uids = keyuids(publickey, &primary);
 700         }
 701         if (uids != NULL) {
 702                 for (i = 0; ret == 0 && uids[i] != NULL; i++) {
 703                         wordlist = makewordlist(wordlist, uids[i]);
 704                 }
 705
 706                 ret = worddb->cursor(worddb,
 707                         txn,
 708                         &cursor,
 709                         0);   /* flags */
 710
 711                 for (curword = wordlist; curword != NULL && !deadlock;
 712                                 curword = curword->next) {
 713                         memset(&key, 0, sizeof(key));
 714                         memset(&data, 0, sizeof(data));
 715                         key.data = curword->object;
 716                         key.size = strlen(key.data);
 717                         data.data = worddb_data;
 718                         data.size = sizeof(worddb_data);
 719
 720                         /*
 721                          * Our data is the key creation time followed by the
 722                          * key id.
 723                          */
 724                         worddb_data[ 0] = publickey->publickey->data[1];
 725                         worddb_data[ 1] = publickey->publickey->data[2];
 726                         worddb_data[ 2] = publickey->publickey->data[3];
 727                         worddb_data[ 3] = publickey->publickey->data[4];
 728                         worddb_data[ 4] = (keyid >> 56) & 0xFF;
 729                         worddb_data[ 5] = (keyid >> 48) & 0xFF;
 730                         worddb_data[ 6] = (keyid >> 40) & 0xFF;
 731                         worddb_data[ 7] = (keyid >> 32) & 0xFF;
 732                         worddb_data[ 8] = (keyid >> 24) & 0xFF;
 733                         worddb_data[ 9] = (keyid >> 16) & 0xFF;
 734                         worddb_data[10] = (keyid >>  8) & 0xFF;
 735                         worddb_data[11] = keyid & 0xFF;
 736
 737                         ret = cursor->c_get(cursor,
 738                                 &key,
 739                                 &data,
 740                                 DB_GET_BOTH);
 741
 742                         if (ret == 0) {
 743                                 ret = cursor->c_del(cursor, 0);
 744                                 if (ret != 0) {
 745                                         logthing(LOGTHING_ERROR,
 746                                                 "Problem deleting word: %s",
 747                                                 db_strerror(ret));
 748                                 }
 749                         }
 750
 751                         if (ret != 0) {
 752                                 logthing(LOGTHING_ERROR,
 753                                         "Problem deleting word: %s",
 754                                         db_strerror(ret));
 755                                 if (ret == DB_LOCK_DEADLOCK) {
 756                                         deadlock = true;
 757                                 }
 758                         }
 759                 }
 760                 ret = cursor->c_close(cursor);
 761                 cursor = NULL;
 762
 763                 /*
 764                  * Free our UID and word lists.
 765                  */
 766                 llfree(wordlist, NULL);
 767                 for (i = 0; uids[i] != NULL; i++) {
 768                         free(uids[i]);
 769                         uids[i] = NULL;
 770                 }
 771                 free(uids);
 772                 uids = NULL;
 773                 free_publickey(publickey);
 774                 publickey = NULL;
 775         }
 776
 777         if (!deadlock) {
 778                 ret = id32db->cursor(id32db,
 779                         txn,
 780                         &cursor,
 781                         0);   /* flags */
 782
 783                 shortkeyid = keyid & 0xFFFFFFFF;
 784
 785                 memset(&key, 0, sizeof(key));
 786                 memset(&data, 0, sizeof(data));
 787                 key.data = &shortkeyid;
 788                 key.size = sizeof(shortkeyid);
 789                 data.data = &keyid;
 790                 data.size = sizeof(keyid);
 791
 792                 ret = cursor->c_get(cursor,
 793                         &key,
 794                         &data,
 795                         DB_GET_BOTH);
 796
 797                 if (ret == 0) {
 798                         ret = cursor->c_del(cursor, 0);
 799                         if (ret != 0) {
 800                                 logthing(LOGTHING_ERROR,
 801                                         "Problem deleting short keyid: %s",
 802                                         db_strerror(ret));
 803                         }
 804                 }
 805
 806                 if (ret != 0) {
 807                         logthing(LOGTHING_ERROR,
 808                                 "Problem deleting short keyid: %s",
 809                                 db_strerror(ret));
 810                         if (ret == DB_LOCK_DEADLOCK) {
 811                                 deadlock = true;
 812                         }
 813                 }
 814                 ret = cursor->c_close(cursor);
 815                 cursor = NULL;
 816         }
 817
 818         if (!deadlock) {
 819                 key.data = &keyid;
 820                 key.size = sizeof(keyid);
 821
 822                 keydb(keyid)->del(keydb(keyid),
 823                                 txn,
 824                                 &key,
 825                                 0); /* flags */
 826         }
 827
 828         if (!intrans) {
 829                 endtrans();
 830         }
 831
 832         return deadlock ? (-1) : (ret == DB_NOTFOUND);
 833 }
 834
 835 /**
 836  *      dumpdb - dump the key database
 837  *      @filenamebase: The base filename to use for the dump.
 838  *
 839  *      Dumps the database into one or more files, which contain pure OpenPGP
 840  *      that can be reimported into onak or gpg. filenamebase provides a base
 841  *      file name for the dump; several files may be created, all of which will
 842  *      begin with this string and then have a unique number and a .pgp
 843  *      extension.
 844  */
 845 int dumpdb(char *filenamebase)
 846 {
 847         DBT   key, data;
 848         DBC  *cursor = NULL;
 849         int   ret = 0;
 850         int   fd = -1;
 851         int   i = 0;
 852         char  filename[1024];
 853
 854         filename[1023] = 0;
 855         for (i = 0; i < numdbs; i++) {
 856                 ret = dbconns[i]->cursor(dbconns[i],
 857                         NULL,
 858                         &cursor,
 859                         0);   /* flags */
 860
 861                 snprintf(filename, 1023, "%s.%d.pgp", filenamebase, i);
 862                 fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0640);
 863                 if (fd == -1) {
 864                         logthing(LOGTHING_ERROR,
 865                                 "Error opening keydump file (%s): %s",
 866                                 filename,
 867                                 strerror(errno));
 868                 } else {
 869                         memset(&key, 0, sizeof(key));
 870                         memset(&data, 0, sizeof(data));
 871                         ret = cursor->c_get(cursor, &key, &data, DB_NEXT);
 872                         while (ret == 0) {
 873                                 write(fd, data.data, data.size);
 874                                 memset(&key, 0, sizeof(key));
 875                                 memset(&data, 0, sizeof(data));
 876                                 ret = cursor->c_get(cursor, &key, &data,
 877                                                 DB_NEXT);
 878                         }
 879                         if (ret != DB_NOTFOUND) {
 880                                 logthing(LOGTHING_ERROR,
 881                                         "Problem reading key: %s",
 882                                         db_strerror(ret));
 883                         }
 884                         close(fd);
 885                 }
 886
 887                 ret = cursor->c_close(cursor);
 888                 cursor = NULL;
 889         }
 890
 891         return 0;
 892 }
 893
 894 /**
 895  *      getfullkeyid - Maps a 32bit key id to a 64bit one.
 896  *      @keyid: The 32bit keyid.
 897  *
 898  *      This function maps a 32bit key id to the full 64bit one. It returns the
 899  *      full keyid. If the key isn't found a keyid of 0 is returned.
 900  */
 901 uint64_t getfullkeyid(uint64_t keyid)
 902 {
 903         DBT       key, data;
 904         DBC      *cursor = NULL;
 905         uint32_t  shortkeyid = 0;
 906         int       ret = 0;
 907
 908         if (keyid < 0x100000000LL) {
 909                 ret = id32db->cursor(id32db,
 910                                 txn,
 911                                 &cursor,
 912                                 0);   /* flags */
 913
 914                 shortkeyid = keyid & 0xFFFFFFFF;
 915
 916                 memset(&key, 0, sizeof(key));
 917                 memset(&data, 0, sizeof(data));
 918                 key.data = &shortkeyid;
 919                 key.size = sizeof(shortkeyid);
 920                 data.flags = DB_DBT_MALLOC;
 921
 922                 ret = cursor->c_get(cursor,
 923                         &key,
 924                         &data,
 925                         DB_SET);
 926
 927                 if (ret == 0) {
 928                         keyid = *(uint64_t *) data.data;
 929
 930                         if (data.data != NULL) {
 931                                 free(data.data);
 932                                 data.data = NULL;
 933                         }
 934                 }
 935
 936                 ret = cursor->c_close(cursor);
 937                 cursor = NULL;
 938         }
 939
 940         return keyid;
 941 }
 942
 943 /*
 944  * Include the basic keydb routines.
 945  */
 946 #define NEED_GETKEYSIGS 1
 947 #define NEED_KEYID2UID 1
 948 #include "keydb.c"