lib/krb5/scache.c

   1 /*
   2  * Copyright (c) 2008 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "krb5_locl.h"
  35
  36 #ifdef HAVE_SCC
  37
  38 #include <sqlite3.h>
  39
  40 typedef struct krb5_scache {
  41     char *name;
  42     char *file;
  43     sqlite3 *db;
  44
  45     sqlite_uint64 cid;
  46
  47     sqlite3_stmt *icred;
  48     sqlite3_stmt *dcred;
  49     sqlite3_stmt *iprincipal;
  50
  51     sqlite3_stmt *icache;
  52     sqlite3_stmt *ucachen;
  53     sqlite3_stmt *ucachep;
  54     sqlite3_stmt *dcache;
  55     sqlite3_stmt *scache;
  56     sqlite3_stmt *scache_name;
  57     sqlite3_stmt *umaster;
  58
  59 } krb5_scache;
  60
  61 #define SCACHE(X)       ((krb5_scache *)(X)->data.data)
  62
  63 #define SCACHE_DEF_NAME         "Default-cache"
  64 #ifdef KRB5_USE_PATH_TOKENS
  65 #define KRB5_SCACHE_DB  "%{TEMP}/krb5scc_%{uid}"
  66 #else
  67 #define KRB5_SCACHE_DB  "/tmp/krb5scc_%{uid}"
  68 #endif
  69 #define KRB5_SCACHE_NAME        "SCC:"  SCACHE_DEF_NAME ":" KRB5_SCACHE_DB
  70
  71 #define SCACHE_INVALID_CID      ((sqlite_uint64)-1)
  72
  73 /*
  74  *
  75  */
  76
  77 #define SQL_CMASTER ""                          \
  78         "CREATE TABLE master ("                 \
  79         "oid INTEGER PRIMARY KEY,"              \
  80         "version INTEGER NOT NULL,"             \
  81         "defaultcache TEXT NOT NULL"            \
  82         ")"
  83
  84 #define SQL_SETUP_MASTER \
  85         "INSERT INTO master (version,defaultcache) VALUES(2, \"" SCACHE_DEF_NAME "\")"
  86 #define SQL_UMASTER "UPDATE master SET defaultcache=? WHERE version=2"
  87
  88 #define SQL_CCACHE ""                           \
  89         "CREATE TABLE caches ("                 \
  90         "oid INTEGER PRIMARY KEY,"              \
  91         "principal TEXT,"                       \
  92         "name TEXT NOT NULL"                    \
  93         ")"
  94
  95 #define SQL_TCACHE ""                                           \
  96         "CREATE TRIGGER CacheDropCreds AFTER DELETE ON caches " \
  97         "FOR EACH ROW BEGIN "                                   \
  98         "DELETE FROM credentials WHERE cid=old.oid;"            \
  99         "END"
 100
 101 #define SQL_ICACHE "INSERT INTO caches (name) VALUES(?)"
 102 #define SQL_UCACHE_NAME "UPDATE caches SET name=? WHERE OID=?"
 103 #define SQL_UCACHE_PRINCIPAL "UPDATE caches SET principal=? WHERE OID=?"
 104 #define SQL_DCACHE "DELETE FROM caches WHERE OID=?"
 105 #define SQL_SCACHE "SELECT principal,name FROM caches WHERE OID=?"
 106 #define SQL_SCACHE_NAME "SELECT oid FROM caches WHERE NAME=?"
 107
 108 #define SQL_CCREDS ""                           \
 109         "CREATE TABLE credentials ("            \
 110         "oid INTEGER PRIMARY KEY,"              \
 111         "cid INTEGER NOT NULL,"                 \
 112         "kvno INTEGER NOT NULL,"                \
 113         "etype INTEGER NOT NULL,"               \
 114         "created_at INTEGER NOT NULL,"          \
 115         "cred BLOB NOT NULL"                    \
 116         ")"
 117
 118 #define SQL_TCRED ""                                                    \
 119         "CREATE TRIGGER credDropPrincipal AFTER DELETE ON credentials " \
 120         "FOR EACH ROW BEGIN "                                           \
 121         "DELETE FROM principals WHERE credential_id=old.oid;"           \
 122         "END"
 123
 124 #define SQL_ICRED "INSERT INTO credentials (cid, kvno, etype, cred, created_at) VALUES (?,?,?,?,?)"
 125 #define SQL_DCRED "DELETE FROM credentials WHERE cid=?"
 126
 127 #define SQL_CPRINCIPALS ""                      \
 128         "CREATE TABLE principals ("             \
 129         "oid INTEGER PRIMARY KEY,"              \
 130         "principal TEXT NOT NULL,"              \
 131         "type INTEGER NOT NULL,"                \
 132         "credential_id INTEGER NOT NULL"        \
 133         ")"
 134
 135 #define SQL_IPRINCIPAL "INSERT INTO principals (principal, type, credential_id) VALUES (?,?,?)"
 136
 137 /*
 138  * sqlite destructors
 139  */
 140
 141 static void
 142 free_data(void *data)
 143 {
 144     free(data);
 145 }
 146
 147 static void
 148 free_krb5(void *str)
 149 {
 150     krb5_xfree(str);
 151 }
 152
 153 static void
 154 scc_free(krb5_scache *s)
 155 {
 156     if (s->file)
 157         free(s->file);
 158     if (s->name)
 159         free(s->name);
 160
 161     if (s->icred)
 162         sqlite3_finalize(s->icred);
 163     if (s->dcred)
 164         sqlite3_finalize(s->dcred);
 165     if (s->iprincipal)
 166         sqlite3_finalize(s->iprincipal);
 167     if (s->icache)
 168         sqlite3_finalize(s->icache);
 169     if (s->ucachen)
 170         sqlite3_finalize(s->ucachen);
 171     if (s->ucachep)
 172         sqlite3_finalize(s->ucachep);
 173     if (s->dcache)
 174         sqlite3_finalize(s->dcache);
 175     if (s->scache)
 176         sqlite3_finalize(s->scache);
 177     if (s->scache_name)
 178         sqlite3_finalize(s->scache_name);
 179     if (s->umaster)
 180         sqlite3_finalize(s->umaster);
 181
 182     if (s->db)
 183         sqlite3_close(s->db);
 184     free(s);
 185 }
 186
 187 #ifdef TRACEME
 188 static void
 189 trace(void* ptr, const char * str)
 190 {
 191     printf("SQL: %s\n", str);
 192 }
 193 #endif
 194
 195 static krb5_error_code
 196 prepare_stmt(krb5_context context, sqlite3 *db,
 197              sqlite3_stmt **stmt, const char *str)
 198 {
 199     int ret;
 200
 201     ret = sqlite3_prepare_v2(db, str, -1, stmt, NULL);
 202     if (ret != SQLITE_OK) {
 203         krb5_set_error_message(context, ENOENT,
 204                                N_("Failed to prepare stmt %s: %s", ""),
 205                                str, sqlite3_errmsg(db));
 206         return ENOENT;
 207     }
 208     return 0;
 209 }
 210
 211 static krb5_error_code
 212 exec_stmt(krb5_context context, sqlite3 *db, const char *str,
 213           krb5_error_code code)
 214 {
 215     int ret;
 216
 217     ret = sqlite3_exec(db, str, NULL, NULL, NULL);
 218     if (ret != SQLITE_OK && code) {
 219         krb5_set_error_message(context, code,
 220                                N_("scache execute %s: %s", ""), str,
 221                                sqlite3_errmsg(db));
 222         return code;
 223     }
 224     return 0;
 225 }
 226
 227 static krb5_error_code
 228 default_db(krb5_context context, sqlite3 **db)
 229 {
 230     char *name;
 231     int ret;
 232
 233     ret = _krb5_expand_default_cc_name(context, KRB5_SCACHE_DB, &name);
 234     if (ret)
 235         return ret;
 236
 237     ret = sqlite3_open_v2(name, db, SQLITE_OPEN_READWRITE, NULL);
 238     free(name);
 239     if (ret != SQLITE_OK) {
 240         krb5_clear_error_message(context);
 241         return ENOENT;
 242     }
 243
 244 #ifdef TRACEME
 245     sqlite3_trace(*db, trace, NULL);
 246 #endif
 247
 248     return 0;
 249 }
 250
 251 static krb5_error_code
 252 get_def_name(krb5_context context, char **str)
 253 {
 254     krb5_error_code ret;
 255     sqlite3_stmt *stmt;
 256     const char *name;
 257     sqlite3 *db;
 258
 259     ret = default_db(context, &db);
 260     if (ret)
 261         return ret;
 262
 263     ret = prepare_stmt(context, db, &stmt, "SELECT defaultcache FROM master");
 264     if (ret) {
 265         sqlite3_close(db);
 266         return ret;
 267     }
 268
 269     ret = sqlite3_step(stmt);
 270     if (ret != SQLITE_ROW)
 271         goto out;
 272
 273     if (sqlite3_column_type(stmt, 0) != SQLITE_TEXT)
 274         goto out;
 275
 276     name = (const char *)sqlite3_column_text(stmt, 0);
 277     if (name == NULL)
 278         goto out;
 279
 280     *str = strdup(name);
 281     if (*str == NULL)
 282         goto out;
 283
 284     sqlite3_finalize(stmt);
 285     sqlite3_close(db);
 286     return 0;
 287 out:
 288     sqlite3_finalize(stmt);
 289     sqlite3_close(db);
 290     krb5_clear_error_message(context);
 291     return ENOENT;
 292 }
 293
 294
 295
 296 static krb5_scache * KRB5_CALLCONV
 297 scc_alloc(krb5_context context, const char *name)
 298 {
 299     krb5_error_code ret;
 300     krb5_scache *s;
 301
 302     ALLOC(s, 1);
 303     if(s == NULL)
 304         return NULL;
 305
 306     s->cid = SCACHE_INVALID_CID;
 307
 308     if (name) {
 309         char *file;
 310
 311         if (*name == '\0') {
 312             krb5_error_code ret;
 313             ret = get_def_name(context, &s->name);
 314             if (ret)
 315                 s->name = strdup(SCACHE_DEF_NAME);
 316         } else
 317             s->name = strdup(name);
 318
 319         file = strrchr(s->name, ':');
 320         if (file) {
 321             *file++ = '\0';
 322             s->file = strdup(file);
 323             ret = 0;
 324         } else {
 325             ret = _krb5_expand_default_cc_name(context, KRB5_SCACHE_DB, &s->file);
 326         }
 327     } else {
 328         _krb5_expand_default_cc_name(context, KRB5_SCACHE_DB, &s->file);
 329         ret = asprintf(&s->name, "unique-%p", s);
 330     }
 331     if (ret < 0 || s->file == NULL || s->name == NULL) {
 332         scc_free(s);
 333         return NULL;
 334     }
 335
 336     return s;
 337 }
 338
 339 static krb5_error_code
 340 open_database(krb5_context context, krb5_scache *s, int flags)
 341 {
 342     int ret;
 343
 344     ret = sqlite3_open_v2(s->file, &s->db, SQLITE_OPEN_READWRITE|flags, NULL);
 345     if (ret) {
 346         if (s->db) {
 347             krb5_set_error_message(context, ENOENT,
 348                                    N_("Error opening scache file %s: %s", ""),
 349                                    s->file, sqlite3_errmsg(s->db));
 350             sqlite3_close(s->db);
 351             s->db = NULL;
 352         } else
 353             krb5_set_error_message(context, ENOENT,
 354                                    N_("malloc: out of memory", ""));
 355         return ENOENT;
 356     }
 357     return 0;
 358 }
 359
 360 static krb5_error_code
 361 create_cache(krb5_context context, krb5_scache *s)
 362 {
 363     int ret;
 364
 365     sqlite3_bind_text(s->icache, 1, s->name, -1, NULL);
 366     do {
 367         ret = sqlite3_step(s->icache);
 368     } while (ret == SQLITE_ROW);
 369     if (ret != SQLITE_DONE) {
 370         krb5_set_error_message(context, KRB5_CC_IO,
 371                                N_("Failed to add scache: %d", ""), ret);
 372         return KRB5_CC_IO;
 373     }
 374     sqlite3_reset(s->icache);
 375
 376     s->cid = sqlite3_last_insert_rowid(s->db);
 377
 378     return 0;
 379 }
 380
 381 static krb5_error_code
 382 make_database(krb5_context context, krb5_scache *s)
 383 {
 384     int created_file = 0;
 385     int ret;
 386
 387     if (s->db)
 388         return 0;
 389
 390     ret = open_database(context, s, 0);
 391     if (ret) {
 392         mode_t oldumask = umask(077);
 393         ret = open_database(context, s, SQLITE_OPEN_CREATE);
 394         umask(oldumask);
 395         if (ret) goto out;
 396
 397         created_file = 1;
 398
 399         ret = exec_stmt(context, s->db, SQL_CMASTER, KRB5_CC_IO);
 400         if (ret) goto out;
 401         ret = exec_stmt(context, s->db, SQL_CCACHE, KRB5_CC_IO);
 402         if (ret) goto out;
 403         ret = exec_stmt(context, s->db, SQL_CCREDS, KRB5_CC_IO);
 404         if (ret) goto out;
 405         ret = exec_stmt(context, s->db, SQL_CPRINCIPALS, KRB5_CC_IO);
 406         if (ret) goto out;
 407         ret = exec_stmt(context, s->db, SQL_SETUP_MASTER, KRB5_CC_IO);
 408         if (ret) goto out;
 409
 410         ret = exec_stmt(context, s->db, SQL_TCACHE, KRB5_CC_IO);
 411         if (ret) goto out;
 412         ret = exec_stmt(context, s->db, SQL_TCRED, KRB5_CC_IO);
 413         if (ret) goto out;
 414     }
 415
 416 #ifdef TRACEME
 417     sqlite3_trace(s->db, trace, NULL);
 418 #endif
 419
 420     ret = prepare_stmt(context, s->db, &s->icred, SQL_ICRED);
 421     if (ret) goto out;
 422     ret = prepare_stmt(context, s->db, &s->dcred, SQL_DCRED);
 423     if (ret) goto out;
 424     ret = prepare_stmt(context, s->db, &s->iprincipal, SQL_IPRINCIPAL);
 425     if (ret) goto out;
 426     ret = prepare_stmt(context, s->db, &s->icache, SQL_ICACHE);
 427     if (ret) goto out;
 428     ret = prepare_stmt(context, s->db, &s->ucachen, SQL_UCACHE_NAME);
 429     if (ret) goto out;
 430     ret = prepare_stmt(context, s->db, &s->ucachep, SQL_UCACHE_PRINCIPAL);
 431     if (ret) goto out;
 432     ret = prepare_stmt(context, s->db, &s->dcache, SQL_DCACHE);
 433     if (ret) goto out;
 434     ret = prepare_stmt(context, s->db, &s->scache, SQL_SCACHE);
 435     if (ret) goto out;
 436     ret = prepare_stmt(context, s->db, &s->scache_name, SQL_SCACHE_NAME);
 437     if (ret) goto out;
 438     ret = prepare_stmt(context, s->db, &s->umaster, SQL_UMASTER);
 439     if (ret) goto out;
 440
 441     return 0;
 442
 443 out:
 444     if (s->db)
 445         sqlite3_close(s->db);
 446     if (created_file)
 447         unlink(s->file);
 448
 449     return ret;
 450 }
 451
 452 static krb5_error_code
 453 bind_principal(krb5_context context,
 454                sqlite3 *db,
 455                sqlite3_stmt *stmt,
 456                int col,
 457                krb5_const_principal principal)
 458 {
 459     krb5_error_code ret;
 460     char *str;
 461
 462     ret = krb5_unparse_name(context, principal, &str);
 463     if (ret)
 464         return ret;
 465
 466     ret = sqlite3_bind_text(stmt, col, str, -1, free_krb5);
 467     if (ret != SQLITE_OK) {
 468         krb5_xfree(str);
 469         krb5_set_error_message(context, ENOMEM,
 470                                N_("scache bind principal: %s", ""),
 471                                sqlite3_errmsg(db));
 472         return ENOMEM;
 473     }
 474     return 0;
 475 }
 476
 477 /*
 478  *
 479  */
 480
 481 static const char* KRB5_CALLCONV
 482 scc_get_name(krb5_context context,
 483              krb5_ccache id)
 484 {
 485     return SCACHE(id)->name;
 486 }
 487
 488 static krb5_error_code KRB5_CALLCONV
 489 scc_resolve(krb5_context context, krb5_ccache *id, const char *res)
 490 {
 491     krb5_scache *s;
 492     int ret;
 493
 494     s = scc_alloc(context, res);
 495     if (s == NULL) {
 496         krb5_set_error_message(context, KRB5_CC_NOMEM,
 497                                N_("malloc: out of memory", ""));
 498         return KRB5_CC_NOMEM;
 499     }
 500
 501     ret = make_database(context, s);
 502     if (ret) {
 503         scc_free(s);
 504         return ret;
 505     }
 506
 507     ret = sqlite3_bind_text(s->scache_name, 1, s->name, -1, NULL);
 508     if (ret != SQLITE_OK) {
 509         krb5_set_error_message(context, ENOMEM,
 510                                "bind name: %s", sqlite3_errmsg(s->db));
 511         scc_free(s);
 512         return ENOMEM;
 513     }
 514
 515     if (sqlite3_step(s->scache_name) == SQLITE_ROW) {
 516
 517         if (sqlite3_column_type(s->scache_name, 0) != SQLITE_INTEGER) {
 518             sqlite3_reset(s->scache_name);
 519             krb5_set_error_message(context, KRB5_CC_END,
 520                                    N_("Cache name of wrong type "
 521                                       "for scache %ld", ""),
 522                                   (unsigned long)s->name);
 523             scc_free(s);
 524             return KRB5_CC_END;
 525         }
 526
 527         s->cid = sqlite3_column_int(s->scache_name, 0);
 528     } else {
 529         s->cid = SCACHE_INVALID_CID;
 530     }
 531     sqlite3_reset(s->scache_name);
 532
 533     (*id)->data.data = s;
 534     (*id)->data.length = sizeof(*s);
 535
 536     return 0;
 537 }
 538
 539 static krb5_error_code KRB5_CALLCONV
 540 scc_gen_new(krb5_context context, krb5_ccache *id)
 541 {
 542     krb5_scache *s;
 543
 544     s = scc_alloc(context, NULL);
 545
 546     if (s == NULL) {
 547         krb5_set_error_message(context, KRB5_CC_NOMEM,
 548                                N_("malloc: out of memory", ""));
 549         return KRB5_CC_NOMEM;
 550     }
 551
 552     (*id)->data.data = s;
 553     (*id)->data.length = sizeof(*s);
 554
 555     return 0;
 556 }
 557
 558 static krb5_error_code KRB5_CALLCONV
 559 scc_initialize(krb5_context context,
 560                krb5_ccache id,
 561                krb5_principal primary_principal)
 562 {
 563     krb5_scache *s = SCACHE(id);
 564     krb5_error_code ret;
 565
 566     ret = make_database(context, s);
 567     if (ret)
 568         return ret;
 569
 570     ret = exec_stmt(context, s->db, "BEGIN IMMEDIATE TRANSACTION", KRB5_CC_IO);
 571     if (ret) return ret;
 572
 573     if (s->cid == SCACHE_INVALID_CID) {
 574         ret = create_cache(context, s);
 575         if (ret)
 576             goto rollback;
 577     } else {
 578         sqlite3_bind_int(s->dcred, 1, s->cid);
 579         do {
 580             ret = sqlite3_step(s->dcred);
 581         } while (ret == SQLITE_ROW);
 582         sqlite3_reset(s->dcred);
 583         if (ret != SQLITE_DONE) {
 584             ret = KRB5_CC_IO;
 585             krb5_set_error_message(context, ret,
 586                                    N_("Failed to delete old "
 587                                       "credentials: %s", ""),
 588                                    sqlite3_errmsg(s->db));
 589             goto rollback;
 590         }
 591     }
 592
 593     ret = bind_principal(context, s->db, s->ucachep, 1, primary_principal);
 594     if (ret)
 595         goto rollback;
 596     sqlite3_bind_int(s->ucachep, 2, s->cid);
 597
 598     do {
 599         ret = sqlite3_step(s->ucachep);
 600     } while (ret == SQLITE_ROW);
 601     sqlite3_reset(s->ucachep);
 602     if (ret != SQLITE_DONE) {
 603         ret = KRB5_CC_IO;
 604         krb5_set_error_message(context, ret,
 605                                N_("Failed to bind principal to cache %s", ""),
 606                                sqlite3_errmsg(s->db));
 607         goto rollback;
 608     }
 609
 610     ret = exec_stmt(context, s->db, "COMMIT", KRB5_CC_IO);
 611     if (ret) return ret;
 612
 613     return 0;
 614
 615 rollback:
 616     exec_stmt(context, s->db, "ROLLBACK", 0);
 617
 618     return ret;
 619
 620 }
 621
 622 static krb5_error_code KRB5_CALLCONV
 623 scc_close(krb5_context context,
 624           krb5_ccache id)
 625 {
 626     scc_free(SCACHE(id));
 627     return 0;
 628 }
 629
 630 static krb5_error_code KRB5_CALLCONV
 631 scc_destroy(krb5_context context,
 632             krb5_ccache id)
 633 {
 634     krb5_scache *s = SCACHE(id);
 635     int ret;
 636
 637     if (s->cid == SCACHE_INVALID_CID)
 638         return 0;
 639
 640     sqlite3_bind_int(s->dcache, 1, s->cid);
 641     do {
 642         ret = sqlite3_step(s->dcache);
 643     } while (ret == SQLITE_ROW);
 644     sqlite3_reset(s->dcache);
 645     if (ret != SQLITE_DONE) {
 646         krb5_set_error_message(context, KRB5_CC_IO,
 647                                N_("Failed to destroy cache %s: %s", ""),
 648                                s->name, sqlite3_errmsg(s->db));
 649         return KRB5_CC_IO;
 650     }
 651     return 0;
 652 }
 653
 654 static krb5_error_code
 655 encode_creds(krb5_context context, krb5_creds *creds, krb5_data *data)
 656 {
 657     krb5_error_code ret;
 658     krb5_storage *sp;
 659
 660     sp = krb5_storage_emem();
 661     if (sp == NULL) {
 662         krb5_set_error_message(context, ENOMEM,
 663                                N_("malloc: out of memory", ""));
 664         return ENOMEM;
 665     }
 666
 667     ret = krb5_store_creds(sp, creds);
 668     if (ret) {
 669         krb5_set_error_message(context, ret,
 670                                N_("Failed to store credential in scache", ""));
 671         krb5_storage_free(sp);
 672         return ret;
 673     }
 674
 675     ret = krb5_storage_to_data(sp, data);
 676     krb5_storage_free(sp);
 677     if (ret)
 678         krb5_set_error_message(context, ret,
 679                                N_("Failed to encode credential in scache", ""));
 680     return ret;
 681 }
 682
 683 static krb5_error_code
 684 decode_creds(krb5_context context, const void *data, size_t length,
 685              krb5_creds *creds)
 686 {
 687     krb5_error_code ret;
 688     krb5_storage *sp;
 689
 690     sp = krb5_storage_from_readonly_mem(data, length);
 691     if (sp == NULL) {
 692         krb5_set_error_message(context, ENOMEM,
 693                                N_("malloc: out of memory", ""));
 694         return ENOMEM;
 695     }
 696
 697     ret = krb5_ret_creds(sp, creds);
 698     krb5_storage_free(sp);
 699     if (ret) {
 700         krb5_set_error_message(context, ret,
 701                                N_("Failed to read credential in scache", ""));
 702         return ret;
 703     }
 704     return 0;
 705 }
 706
 707
 708 static krb5_error_code KRB5_CALLCONV
 709 scc_store_cred(krb5_context context,
 710                krb5_ccache id,
 711                krb5_creds *creds)
 712 {
 713     sqlite_uint64 credid;
 714     krb5_scache *s = SCACHE(id);
 715     krb5_error_code ret;
 716     krb5_data data;
 717
 718     ret = make_database(context, s);
 719     if (ret)
 720         return ret;
 721
 722     ret = encode_creds(context, creds, &data);
 723     if (ret)
 724         return ret;
 725
 726     sqlite3_bind_int(s->icred, 1, s->cid);
 727     {
 728         krb5_enctype etype = 0;
 729         int kvno = 0;
 730         Ticket t;
 731         size_t len;
 732
 733         ret = decode_Ticket(creds->ticket.data,
 734                             creds->ticket.length, &t, &len);
 735         if (ret == 0) {
 736             if(t.enc_part.kvno)
 737                 kvno = *t.enc_part.kvno;
 738
 739             etype = t.enc_part.etype;
 740
 741             free_Ticket(&t);
 742         }
 743
 744         sqlite3_bind_int(s->icred, 2, kvno);
 745         sqlite3_bind_int(s->icred, 3, etype);
 746
 747     }
 748
 749     sqlite3_bind_blob(s->icred, 4, data.data, data.length, free_data);
 750     sqlite3_bind_int(s->icred, 5, time(NULL));
 751
 752     ret = exec_stmt(context, s->db, "BEGIN IMMEDIATE TRANSACTION", KRB5_CC_IO);
 753     if (ret) return ret;
 754
 755     do {
 756         ret = sqlite3_step(s->icred);
 757     } while (ret == SQLITE_ROW);
 758     sqlite3_reset(s->icred);
 759     if (ret != SQLITE_DONE) {
 760         ret = KRB5_CC_IO;
 761         krb5_set_error_message(context, ret,
 762                                N_("Failed to add credential: %s", ""),
 763                                sqlite3_errmsg(s->db));
 764         goto rollback;
 765     }
 766
 767     credid = sqlite3_last_insert_rowid(s->db);
 768
 769     {
 770         bind_principal(context, s->db, s->iprincipal, 1, creds->server);
 771         sqlite3_bind_int(s->iprincipal, 2, 1);
 772         sqlite3_bind_int(s->iprincipal, 3, credid);
 773
 774         do {
 775             ret = sqlite3_step(s->iprincipal);
 776         } while (ret == SQLITE_ROW);
 777         sqlite3_reset(s->iprincipal);
 778         if (ret != SQLITE_DONE) {
 779             ret = KRB5_CC_IO;
 780             krb5_set_error_message(context, ret,
 781                                    N_("Failed to add principal: %s", ""),
 782                                    sqlite3_errmsg(s->db));
 783             goto rollback;
 784         }
 785     }
 786
 787     {
 788         bind_principal(context, s->db, s->iprincipal, 1, creds->client);
 789         sqlite3_bind_int(s->iprincipal, 2, 0);
 790         sqlite3_bind_int(s->iprincipal, 3, credid);
 791
 792         do {
 793             ret = sqlite3_step(s->iprincipal);
 794         } while (ret == SQLITE_ROW);
 795         sqlite3_reset(s->iprincipal);
 796         if (ret != SQLITE_DONE) {
 797             ret = KRB5_CC_IO;
 798             krb5_set_error_message(context, ret,
 799                                    N_("Failed to add principal: %s", ""),
 800                                    sqlite3_errmsg(s->db));
 801             goto rollback;
 802         }
 803     }
 804
 805     ret = exec_stmt(context, s->db, "COMMIT", KRB5_CC_IO);
 806     if (ret) return ret;
 807
 808     return 0;
 809
 810 rollback:
 811     exec_stmt(context, s->db, "ROLLBACK", 0);
 812
 813     return ret;
 814 }
 815
 816 static krb5_error_code KRB5_CALLCONV
 817 scc_get_principal(krb5_context context,
 818                   krb5_ccache id,
 819                   krb5_principal *principal)
 820 {
 821     krb5_scache *s = SCACHE(id);
 822     krb5_error_code ret;
 823     const char *str;
 824
 825     *principal = NULL;
 826
 827     ret = make_database(context, s);
 828     if (ret)
 829         return ret;
 830
 831     sqlite3_bind_int(s->scache, 1, s->cid);
 832
 833     if (sqlite3_step(s->scache) != SQLITE_ROW) {
 834         sqlite3_reset(s->scache);
 835         krb5_set_error_message(context, KRB5_CC_END,
 836                                N_("No principal for cache SCC:%s:%s", ""),
 837                                s->name, s->file);
 838         return KRB5_CC_END;
 839     }
 840
 841     if (sqlite3_column_type(s->scache, 0) != SQLITE_TEXT) {
 842         sqlite3_reset(s->scache);
 843         krb5_set_error_message(context, KRB5_CC_END,
 844                                N_("Principal data of wrong type "
 845                                   "for SCC:%s:%s", ""),
 846                                s->name, s->file);
 847         return KRB5_CC_END;
 848     }
 849
 850     str = (const char *)sqlite3_column_text(s->scache, 0);
 851     if (str == NULL) {
 852         sqlite3_reset(s->scache);
 853         krb5_set_error_message(context, KRB5_CC_END,
 854                                N_("Principal not set for SCC:%s:%s", ""),
 855                                s->name, s->file);
 856         return KRB5_CC_END;
 857     }
 858
 859     ret = krb5_parse_name(context, str, principal);
 860
 861     sqlite3_reset(s->scache);
 862
 863     return ret;
 864 }
 865
 866 struct cred_ctx {
 867     char *drop;
 868     sqlite3_stmt *stmt;
 869     sqlite3_stmt *credstmt;
 870 };
 871
 872 static krb5_error_code KRB5_CALLCONV
 873 scc_get_first (krb5_context context,
 874                krb5_ccache id,
 875                krb5_cc_cursor *cursor)
 876 {
 877     krb5_scache *s = SCACHE(id);
 878     krb5_error_code ret;
 879     struct cred_ctx *ctx;
 880     char *str = NULL, *name = NULL;
 881
 882     *cursor = NULL;
 883
 884     ctx = calloc(1, sizeof(*ctx));
 885     if (ctx == NULL) {
 886         krb5_set_error_message(context, ENOMEM,
 887                                N_("malloc: out of memory", ""));
 888         return ENOMEM;
 889     }
 890
 891     ret = make_database(context, s);
 892     if (ret) {
 893         free(ctx);
 894         return ret;
 895     }
 896
 897     if (s->cid == SCACHE_INVALID_CID) {
 898         krb5_set_error_message(context, KRB5_CC_END,
 899                                N_("Iterating a invalid scache %s", ""),
 900                                s->name);
 901         free(ctx);
 902         return KRB5_CC_END;
 903     }
 904
 905     ret = asprintf(&name, "credIteration%luPid%d",
 906              (unsigned long)ctx, (int)getpid());
 907     if (ret < 0 || name == NULL) {
 908         krb5_set_error_message(context, ENOMEM,
 909                                N_("malloc: out of memory", ""));
 910         free(ctx);
 911         return ENOMEM;
 912     }
 913
 914     ret = asprintf(&ctx->drop, "DROP TABLE %s", name);
 915     if (ret < 0 || ctx->drop == NULL) {
 916         krb5_set_error_message(context, ENOMEM,
 917                                N_("malloc: out of memory", ""));
 918         free(name);
 919         free(ctx);
 920         return ENOMEM;
 921     }
 922
 923     ret = asprintf(&str, "CREATE TEMPORARY TABLE %s "
 924              "AS SELECT oid,created_at FROM credentials WHERE cid = %lu",
 925              name, (unsigned long)s->cid);
 926     if (ret < 0 || str == NULL) {
 927         free(ctx->drop);
 928         free(name);
 929         free(ctx);
 930         return ENOMEM;
 931     }
 932
 933     ret = exec_stmt(context, s->db, str, KRB5_CC_IO);
 934     free(str);
 935     str = NULL;
 936     if (ret) {
 937         free(ctx->drop);
 938         free(name);
 939         free(ctx);
 940         return ret;
 941     }
 942
 943     ret = asprintf(&str, "SELECT oid FROM %s ORDER BY created_at", name);
 944     if (ret < 0 || str == NULL) {
 945         exec_stmt(context, s->db, ctx->drop, 0);
 946         free(ctx->drop);
 947         free(name);
 948         free(ctx);
 949         return ret;
 950     }
 951
 952     ret = prepare_stmt(context, s->db, &ctx->stmt, str);
 953     free(str);
 954     str = NULL;
 955     free(name);
 956     if (ret) {
 957         exec_stmt(context, s->db, ctx->drop, 0);
 958         free(ctx->drop);
 959         free(ctx);
 960         return ret;
 961     }
 962
 963     ret = prepare_stmt(context, s->db, &ctx->credstmt,
 964                        "SELECT cred FROM credentials WHERE oid = ?");
 965     if (ret) {
 966         sqlite3_finalize(ctx->stmt);
 967         exec_stmt(context, s->db, ctx->drop, 0);
 968         free(ctx->drop);
 969         free(ctx);
 970         return ret;
 971     }
 972
 973     *cursor = ctx;
 974
 975     return 0;
 976 }
 977
 978 static krb5_error_code KRB5_CALLCONV
 979 scc_get_next (krb5_context context,
 980               krb5_ccache id,
 981               krb5_cc_cursor *cursor,
 982               krb5_creds *creds)
 983 {
 984     struct cred_ctx *ctx = *cursor;
 985     krb5_scache *s = SCACHE(id);
 986     krb5_error_code ret;
 987     sqlite_uint64 oid;
 988     const void *data = NULL;
 989     size_t len = 0;
 990
 991 next:
 992     ret = sqlite3_step(ctx->stmt);
 993     if (ret == SQLITE_DONE) {
 994         krb5_clear_error_message(context);
 995         return KRB5_CC_END;
 996     } else if (ret != SQLITE_ROW) {
 997         krb5_set_error_message(context, KRB5_CC_IO,
 998                                N_("scache Database failed: %s", ""),
 999                                sqlite3_errmsg(s->db));
1000         return KRB5_CC_IO;
1001     }
1002
1003     oid = sqlite3_column_int64(ctx->stmt, 0);
1004
1005     /* read cred from credentials table */
1006
1007     sqlite3_bind_int(ctx->credstmt, 1, oid);
1008
1009     ret = sqlite3_step(ctx->credstmt);
1010     if (ret != SQLITE_ROW) {
1011         sqlite3_reset(ctx->credstmt);
1012         goto next;
1013     }
1014
1015     if (sqlite3_column_type(ctx->credstmt, 0) != SQLITE_BLOB) {
1016         krb5_set_error_message(context, KRB5_CC_END,
1017                                N_("credential of wrong type for SCC:%s:%s", ""),
1018                                s->name, s->file);
1019         sqlite3_reset(ctx->credstmt);
1020         return KRB5_CC_END;
1021     }
1022
1023     data = sqlite3_column_blob(ctx->credstmt, 0);
1024     len = sqlite3_column_bytes(ctx->credstmt, 0);
1025
1026     ret = decode_creds(context, data, len, creds);
1027     sqlite3_reset(ctx->credstmt);
1028     return ret;
1029 }
1030
1031 static krb5_error_code KRB5_CALLCONV
1032 scc_end_get (krb5_context context,
1033              krb5_ccache id,
1034              krb5_cc_cursor *cursor)
1035 {
1036     struct cred_ctx *ctx = *cursor;
1037     krb5_scache *s = SCACHE(id);
1038
1039     sqlite3_finalize(ctx->stmt);
1040     sqlite3_finalize(ctx->credstmt);
1041
1042     exec_stmt(context, s->db, ctx->drop, 0);
1043
1044     free(ctx->drop);
1045     free(ctx);
1046
1047     return 0;
1048 }
1049
1050 static krb5_error_code KRB5_CALLCONV
1051 scc_remove_cred(krb5_context context,
1052                  krb5_ccache id,
1053                  krb5_flags which,
1054                  krb5_creds *mcreds)
1055 {
1056     krb5_scache *s = SCACHE(id);
1057     krb5_error_code ret;
1058     sqlite3_stmt *stmt;
1059     sqlite_uint64 credid = 0;
1060     const void *data = NULL;
1061     size_t len = 0;
1062
1063     ret = make_database(context, s);
1064     if (ret)
1065         return ret;
1066
1067     ret = prepare_stmt(context, s->db, &stmt,
1068                        "SELECT cred,oid FROM credentials "
1069                        "WHERE cid = ?");
1070     if (ret)
1071         return ret;
1072
1073     sqlite3_bind_int(stmt, 1, s->cid);
1074
1075     /* find credential... */
1076     while (1) {
1077         krb5_creds creds;
1078
1079         ret = sqlite3_step(stmt);
1080         if (ret == SQLITE_DONE) {
1081             ret = 0;
1082             break;
1083         } else if (ret != SQLITE_ROW) {
1084             ret = KRB5_CC_IO;
1085             krb5_set_error_message(context, ret,
1086                                    N_("scache Database failed: %s", ""),
1087                                    sqlite3_errmsg(s->db));
1088             break;
1089         }
1090
1091         if (sqlite3_column_type(stmt, 0) != SQLITE_BLOB) {
1092             ret = KRB5_CC_END;
1093             krb5_set_error_message(context, ret,
1094                                    N_("Credential of wrong type "
1095                                       "for SCC:%s:%s", ""),
1096                                    s->name, s->file);
1097             break;
1098         }
1099
1100         data = sqlite3_column_blob(stmt, 0);
1101         len = sqlite3_column_bytes(stmt, 0);
1102
1103         ret = decode_creds(context, data, len, &creds);
1104         if (ret)
1105             break;
1106
1107         ret = krb5_compare_creds(context, which, mcreds, &creds);
1108         krb5_free_cred_contents(context, &creds);
1109         if (ret) {
1110             credid = sqlite3_column_int64(stmt, 1);
1111             ret = 0;
1112             break;
1113         }
1114     }
1115
1116     sqlite3_finalize(stmt);
1117
1118     if (id) {
1119         ret = prepare_stmt(context, s->db, &stmt,
1120                            "DELETE FROM credentials WHERE oid=?");
1121         if (ret)
1122             return ret;
1123         sqlite3_bind_int(stmt, 1, credid);
1124
1125         do {
1126             ret = sqlite3_step(stmt);
1127         } while (ret == SQLITE_ROW);
1128         sqlite3_finalize(stmt);
1129         if (ret != SQLITE_DONE) {
1130             ret = KRB5_CC_IO;
1131             krb5_set_error_message(context, ret,
1132                                    N_("failed to delete scache credental", ""));
1133         } else
1134             ret = 0;
1135     }
1136
1137     return ret;
1138 }
1139
1140 static krb5_error_code KRB5_CALLCONV
1141 scc_set_flags(krb5_context context,
1142               krb5_ccache id,
1143               krb5_flags flags)
1144 {
1145     return 0; /* XXX */
1146 }
1147
1148 struct cache_iter {
1149     char *drop;
1150     sqlite3 *db;
1151     sqlite3_stmt *stmt;
1152 };
1153
1154 static krb5_error_code KRB5_CALLCONV
1155 scc_get_cache_first(krb5_context context, krb5_cc_cursor *cursor)
1156 {
1157     struct cache_iter *ctx;
1158     krb5_error_code ret;
1159     char *name = NULL, *str = NULL;
1160
1161     *cursor = NULL;
1162
1163     ctx = calloc(1, sizeof(*ctx));
1164     if (ctx == NULL) {
1165         krb5_set_error_message(context, ENOMEM,
1166                                N_("malloc: out of memory", ""));
1167         return ENOMEM;
1168     }
1169
1170     ret = default_db(context, &ctx->db);
1171     if (ctx->db == NULL) {
1172         free(ctx);
1173         return ret;
1174     }
1175
1176     ret = asprintf(&name, "cacheIteration%luPid%d",
1177              (unsigned long)ctx, (int)getpid());
1178     if (ret < 0 || name == NULL) {
1179         krb5_set_error_message(context, ENOMEM,
1180                                N_("malloc: out of memory", ""));
1181         sqlite3_close(ctx->db);
1182         free(ctx);
1183         return ENOMEM;
1184     }
1185
1186     ret = asprintf(&ctx->drop, "DROP TABLE %s", name);
1187     if (ret < 0 || ctx->drop == NULL) {
1188         krb5_set_error_message(context, ENOMEM,
1189                                N_("malloc: out of memory", ""));
1190         sqlite3_close(ctx->db);
1191         free(name);
1192         free(ctx);
1193         return ENOMEM;
1194     }
1195
1196     ret = asprintf(&str, "CREATE TEMPORARY TABLE %s AS SELECT name FROM caches",
1197              name);
1198     if (ret < 0 || str == NULL) {
1199         krb5_set_error_message(context, ENOMEM,
1200                                N_("malloc: out of memory", ""));
1201         sqlite3_close(ctx->db);
1202         free(name);
1203         free(ctx->drop);
1204         free(ctx);
1205         return ENOMEM;
1206     }
1207
1208     ret = exec_stmt(context, ctx->db, str, KRB5_CC_IO);
1209     free(str);
1210     str = NULL;
1211     if (ret) {
1212         sqlite3_close(ctx->db);
1213         free(name);
1214         free(ctx->drop);
1215         free(ctx);
1216         return ret;
1217     }
1218
1219     ret = asprintf(&str, "SELECT name FROM %s", name);
1220     free(name);
1221     if (ret < 0 || str == NULL) {
1222         exec_stmt(context, ctx->db, ctx->drop, 0);
1223         sqlite3_close(ctx->db);
1224         free(name);
1225         free(ctx->drop);
1226         free(ctx);
1227         return ENOMEM;
1228     }
1229
1230     ret = prepare_stmt(context, ctx->db, &ctx->stmt, str);
1231     free(str);
1232     if (ret) {
1233         exec_stmt(context, ctx->db, ctx->drop, 0);
1234         sqlite3_close(ctx->db);
1235         free(ctx->drop);
1236         free(ctx);
1237         return ret;
1238     }
1239
1240     *cursor = ctx;
1241
1242     return 0;
1243 }
1244
1245 static krb5_error_code KRB5_CALLCONV
1246 scc_get_cache_next(krb5_context context,
1247                    krb5_cc_cursor cursor,
1248                    krb5_ccache *id)
1249 {
1250     struct cache_iter *ctx = cursor;
1251     krb5_error_code ret;
1252     const char *name;
1253
1254 again:
1255     ret = sqlite3_step(ctx->stmt);
1256     if (ret == SQLITE_DONE) {
1257         krb5_clear_error_message(context);
1258         return KRB5_CC_END;
1259     } else if (ret != SQLITE_ROW) {
1260         krb5_set_error_message(context, KRB5_CC_IO,
1261                                N_("Database failed: %s", ""),
1262                                sqlite3_errmsg(ctx->db));
1263         return KRB5_CC_IO;
1264     }
1265
1266     if (sqlite3_column_type(ctx->stmt, 0) != SQLITE_TEXT)
1267         goto again;
1268
1269     name = (const char *)sqlite3_column_text(ctx->stmt, 0);
1270     if (name == NULL)
1271         goto again;
1272
1273     ret = _krb5_cc_allocate(context, &krb5_scc_ops, id);
1274     if (ret)
1275         return ret;
1276
1277     return scc_resolve(context, id, name);
1278 }
1279
1280 static krb5_error_code KRB5_CALLCONV
1281 scc_end_cache_get(krb5_context context, krb5_cc_cursor cursor)
1282 {
1283     struct cache_iter *ctx = cursor;
1284
1285     exec_stmt(context, ctx->db, ctx->drop, 0);
1286     sqlite3_finalize(ctx->stmt);
1287     sqlite3_close(ctx->db);
1288     free(ctx->drop);
1289     free(ctx);
1290     return 0;
1291 }
1292
1293 static krb5_error_code KRB5_CALLCONV
1294 scc_move(krb5_context context, krb5_ccache from, krb5_ccache to)
1295 {
1296     krb5_scache *sfrom = SCACHE(from);
1297     krb5_scache *sto = SCACHE(to);
1298     krb5_error_code ret;
1299
1300     if (strcmp(sfrom->file, sto->file) != 0) {
1301         krb5_set_error_message(context, KRB5_CC_BADNAME,
1302                                N_("Can't handle cross database "
1303                                   "credential move: %s -> %s", ""),
1304                                sfrom->file, sto->file);
1305         return KRB5_CC_BADNAME;
1306     }
1307
1308     ret = make_database(context, sfrom);
1309     if (ret)
1310         return ret;
1311
1312     ret = exec_stmt(context, sfrom->db,
1313                     "BEGIN IMMEDIATE TRANSACTION", KRB5_CC_IO);
1314     if (ret) return ret;
1315
1316     if (sto->cid != SCACHE_INVALID_CID) {
1317         /* drop old cache entry */
1318
1319         sqlite3_bind_int(sfrom->dcache, 1, sto->cid);
1320         do {
1321             ret = sqlite3_step(sfrom->dcache);
1322         } while (ret == SQLITE_ROW);
1323         sqlite3_reset(sfrom->dcache);
1324         if (ret != SQLITE_DONE) {
1325             krb5_set_error_message(context, KRB5_CC_IO,
1326                                    N_("Failed to delete old cache: %d", ""),
1327                                    (int)ret);
1328             goto rollback;
1329         }
1330     }
1331
1332     sqlite3_bind_text(sfrom->ucachen, 1, sto->name, -1, NULL);
1333     sqlite3_bind_int(sfrom->ucachen, 2, sfrom->cid);
1334
1335     do {
1336         ret = sqlite3_step(sfrom->ucachen);
1337     } while (ret == SQLITE_ROW);
1338     sqlite3_reset(sfrom->ucachen);
1339     if (ret != SQLITE_DONE) {
1340         krb5_set_error_message(context, KRB5_CC_IO,
1341                                N_("Failed to update new cache: %d", ""),
1342                                (int)ret);
1343         goto rollback;
1344     }
1345
1346     sto->cid = sfrom->cid;
1347
1348     ret = exec_stmt(context, sfrom->db, "COMMIT", KRB5_CC_IO);
1349     if (ret) return ret;
1350
1351     scc_free(sfrom);
1352
1353     return 0;
1354
1355 rollback:
1356     exec_stmt(context, sfrom->db, "ROLLBACK", 0);
1357     scc_free(sfrom);
1358
1359     return KRB5_CC_IO;
1360 }
1361
1362 static krb5_error_code KRB5_CALLCONV
1363 scc_get_default_name(krb5_context context, char **str)
1364 {
1365     krb5_error_code ret;
1366     char *name;
1367
1368     *str = NULL;
1369
1370     ret = get_def_name(context, &name);
1371     if (ret)
1372         return _krb5_expand_default_cc_name(context, KRB5_SCACHE_NAME, str);
1373
1374     ret = asprintf(str, "SCC:%s", name);
1375     free(name);
1376     if (ret < 0 || *str == NULL) {
1377         krb5_set_error_message(context, ENOMEM,
1378                                N_("malloc: out of memory", ""));
1379         return ENOMEM;
1380     }
1381     return 0;
1382 }
1383
1384 static krb5_error_code KRB5_CALLCONV
1385 scc_set_default(krb5_context context, krb5_ccache id)
1386 {
1387     krb5_scache *s = SCACHE(id);
1388     krb5_error_code ret;
1389
1390     if (s->cid == SCACHE_INVALID_CID) {
1391         krb5_set_error_message(context, KRB5_CC_IO,
1392                                N_("Trying to set a invalid cache "
1393                                   "as default %s", ""),
1394                                s->name);
1395         return KRB5_CC_IO;
1396     }
1397
1398     ret = sqlite3_bind_text(s->umaster, 1, s->name, -1, NULL);
1399     if (ret) {
1400         sqlite3_reset(s->umaster);
1401         krb5_set_error_message(context, KRB5_CC_IO,
1402                                N_("Failed to set name of default cache", ""));
1403         return KRB5_CC_IO;
1404     }
1405
1406     do {
1407         ret = sqlite3_step(s->umaster);
1408     } while (ret == SQLITE_ROW);
1409     sqlite3_reset(s->umaster);
1410     if (ret != SQLITE_DONE) {
1411         krb5_set_error_message(context, KRB5_CC_IO,
1412                                N_("Failed to update default cache", ""));
1413         return KRB5_CC_IO;
1414     }
1415
1416     return 0;
1417 }
1418
1419 /**
1420  * Variable containing the SCC based credential cache implemention.
1421  *
1422  * @ingroup krb5_ccache
1423  */
1424
1425 KRB5_LIB_VARIABLE const krb5_cc_ops krb5_scc_ops = {
1426     KRB5_CC_OPS_VERSION,
1427     "SCC",
1428     scc_get_name,
1429     scc_resolve,
1430     scc_gen_new,
1431     scc_initialize,
1432     scc_destroy,
1433     scc_close,
1434     scc_store_cred,
1435     NULL, /* scc_retrieve */
1436     scc_get_principal,
1437     scc_get_first,
1438     scc_get_next,
1439     scc_end_get,
1440     scc_remove_cred,
1441     scc_set_flags,
1442     NULL,
1443     scc_get_cache_first,
1444     scc_get_cache_next,
1445     scc_end_cache_get,
1446     scc_move,
1447     scc_get_default_name,
1448     scc_set_default
1449 };
1450
1451 #endif