kadmin/load.c

   1 /*
   2  * Copyright (c) 1997-2005 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 "kadmin_locl.h"
  35 #include "kadmin-commands.h"
  36 #include <kadm5/private.h>
  37
  38 struct entry {
  39     char *principal;
  40     char *key;
  41     char *max_life;
  42     char *max_renew;
  43     char *created;
  44     char *modified;
  45     char *valid_start;
  46     char *valid_end;
  47     char *pw_end;
  48     char *flags;
  49     char *generation;
  50     char *extensions;
  51 };
  52
  53 static char *
  54 skip_next(char *p)
  55 {
  56     while(*p && !isspace((unsigned char)*p))
  57         p++;
  58     *p++ = 0;
  59     while(*p && isspace((unsigned char)*p))
  60         p++;
  61     return p;
  62 }
  63
  64 /*
  65  * Parse the time in `s', returning:
  66  * -1 if error parsing
  67  * 0  if none  present
  68  * 1  if parsed ok
  69  */
  70
  71 static int
  72 parse_time_string(time_t *t, const char *s)
  73 {
  74     int year, month, date, hour, minute, second;
  75     struct tm tm;
  76
  77     if(strcmp(s, "-") == 0)
  78         return 0;
  79     if(sscanf(s, "%04d%02d%02d%02d%02d%02d",
  80               &year, &month, &date, &hour, &minute, &second) != 6)
  81         return -1;
  82     tm.tm_year  = year - 1900;
  83     tm.tm_mon   = month - 1;
  84     tm.tm_mday  = date;
  85     tm.tm_hour  = hour;
  86     tm.tm_min   = minute;
  87     tm.tm_sec   = second;
  88     tm.tm_isdst = 0;
  89     *t = timegm(&tm);
  90     return 1;
  91 }
  92
  93 /*
  94  * parse time, allocating space in *t if it's there
  95  */
  96
  97 static int
  98 parse_time_string_alloc (time_t **t, const char *s)
  99 {
 100     time_t tmp;
 101     int ret;
 102
 103     *t = NULL;
 104     ret = parse_time_string (&tmp, s);
 105     if (ret == 1) {
 106         *t = malloc (sizeof (**t));
 107         if (*t == NULL)
 108             krb5_errx (context, 1, "malloc: out of memory");
 109         **t = tmp;
 110     }
 111     return ret;
 112 }
 113
 114 /*
 115  * see parse_time_string for calling convention
 116  */
 117
 118 static int
 119 parse_integer(unsigned int *u, const char *s)
 120 {
 121     if(strcmp(s, "-") == 0)
 122         return 0;
 123     if (sscanf(s, "%u", u) != 1)
 124         return -1;
 125     return 1;
 126 }
 127
 128 static int
 129 parse_integer_alloc (unsigned int **u, const char *s)
 130 {
 131     unsigned int tmp;
 132     int ret;
 133
 134     *u = NULL;
 135     ret = parse_integer (&tmp, s);
 136     if (ret == 1) {
 137         *u = malloc (sizeof (**u));
 138         if (*u == NULL)
 139             krb5_errx (context, 1, "malloc: out of memory");
 140         **u = tmp;
 141     }
 142     return ret;
 143 }
 144
 145 /*
 146  * Parse dumped keys in `str' and store them in `ent'
 147  * return -1 if parsing failed
 148  */
 149
 150 static int
 151 parse_keys(hdb_entry *ent, char *str)
 152 {
 153     krb5_error_code ret;
 154     int tmp;
 155     char *p;
 156     size_t i;
 157
 158     p = strsep(&str, ":");
 159     if (sscanf(p, "%d", &tmp) != 1)
 160         return 1;
 161     ent->kvno = tmp;
 162     p = strsep(&str, ":");
 163     while(p){
 164         Key *key;
 165         key = realloc(ent->keys.val,
 166                       (ent->keys.len + 1) * sizeof(*ent->keys.val));
 167         if(key == NULL)
 168             krb5_errx (context, 1, "realloc: out of memory");
 169         ent->keys.val = key;
 170         key = ent->keys.val + ent->keys.len;
 171         ent->keys.len++;
 172         memset(key, 0, sizeof(*key));
 173         if(sscanf(p, "%d", &tmp) == 1) {
 174             key->mkvno = malloc(sizeof(*key->mkvno));
 175             *key->mkvno = tmp;
 176         } else
 177             key->mkvno = NULL;
 178         p = strsep(&str, ":");
 179         if (sscanf(p, "%d", &tmp) != 1)
 180             return 1;
 181         key->key.keytype = tmp;
 182         p = strsep(&str, ":");
 183         ret = krb5_data_alloc(&key->key.keyvalue, (strlen(p) - 1) / 2 + 1);
 184         if (ret)
 185             krb5_err (context, 1, ret, "krb5_data_alloc");
 186         for(i = 0; i < strlen(p); i += 2) {
 187             if(sscanf(p + i, "%02x", &tmp) != 1)
 188                 return 1;
 189             ((u_char*)key->key.keyvalue.data)[i / 2] = tmp;
 190         }
 191         p = strsep(&str, ":");
 192         if(strcmp(p, "-") != 0){
 193             unsigned type;
 194             size_t p_len;
 195
 196             if(sscanf(p, "%u/", &type) != 1)
 197                 return 1;
 198             p = strchr(p, '/');
 199             if(p == NULL)
 200                 return 1;
 201             p++;
 202             p_len = strlen(p);
 203
 204             key->salt = calloc(1, sizeof(*key->salt));
 205             if (key->salt == NULL)
 206                 krb5_errx (context, 1, "malloc: out of memory");
 207             key->salt->type = type;
 208
 209             if (p_len) {
 210                 if(*p == '\"') {
 211                     ret = krb5_data_copy(&key->salt->salt, p + 1, p_len - 2);
 212                     if (ret)
 213                         krb5_err (context, 1, ret, "krb5_data_copy");
 214                 } else {
 215                     ret = krb5_data_alloc(&key->salt->salt,
 216                                           (p_len - 1) / 2 + 1);
 217                     if (ret)
 218                         krb5_err (context, 1, ret, "krb5_data_alloc");
 219                     for(i = 0; i < p_len; i += 2){
 220                         if (sscanf(p + i, "%02x", &tmp) != 1)
 221                             return 1;
 222                         ((u_char*)key->salt->salt.data)[i / 2] = tmp;
 223                     }
 224                 }
 225             } else
 226                 krb5_data_zero (&key->salt->salt);
 227         }
 228         p = strsep(&str, ":");
 229     }
 230     return 0;
 231 }
 232
 233 /*
 234  * see parse_time_string for calling convention
 235  */
 236
 237 static int
 238 parse_event(Event *ev, char *s)
 239 {
 240     krb5_error_code ret;
 241     char *p;
 242
 243     if(strcmp(s, "-") == 0)
 244         return 0;
 245     memset(ev, 0, sizeof(*ev));
 246     p = strsep(&s, ":");
 247     if(parse_time_string(&ev->time, p) != 1)
 248         return -1;
 249     p = strsep(&s, ":");
 250     ret = krb5_parse_name(context, p, &ev->principal);
 251     if (ret)
 252         return -1;
 253     return 1;
 254 }
 255
 256 static int
 257 parse_event_alloc (Event **ev, char *s)
 258 {
 259     Event tmp;
 260     int ret;
 261
 262     *ev = NULL;
 263     ret = parse_event (&tmp, s);
 264     if (ret == 1) {
 265         *ev = malloc (sizeof (**ev));
 266         if (*ev == NULL)
 267             krb5_errx (context, 1, "malloc: out of memory");
 268         **ev = tmp;
 269     }
 270     return ret;
 271 }
 272
 273 static int
 274 parse_hdbflags2int(HDBFlags *f, const char *s)
 275 {
 276     int ret;
 277     unsigned int tmp;
 278
 279     ret = parse_integer (&tmp, s);
 280     if (ret == 1)
 281         *f = int2HDBFlags (tmp);
 282     return ret;
 283 }
 284
 285 static int
 286 parse_generation(char *str, GENERATION **gen)
 287 {
 288     char *p;
 289     int v;
 290
 291     if(strcmp(str, "-") == 0 || *str == '\0') {
 292         *gen = NULL;
 293         return 0;
 294     }
 295     *gen = calloc(1, sizeof(**gen));
 296
 297     p = strsep(&str, ":");
 298     if(parse_time_string(&(*gen)->time, p) != 1)
 299         return -1;
 300     p = strsep(&str, ":");
 301     if(sscanf(p, "%d", &v) != 1)
 302         return -1;
 303     (*gen)->usec = v;
 304     p = strsep(&str, ":");
 305     if(sscanf(p, "%d", &v) != 1)
 306         return -1;
 307     (*gen)->gen = v - 1; /* XXX gets bumped in _hdb_store */
 308     return 0;
 309 }
 310
 311 static int
 312 parse_extensions(char *str, HDB_extensions **e)
 313 {
 314     char *p;
 315     int ret;
 316
 317     if(strcmp(str, "-") == 0 || *str == '\0') {
 318         *e = NULL;
 319         return 0;
 320     }
 321     *e = calloc(1, sizeof(**e));
 322
 323     p = strsep(&str, ":");
 324
 325     while (p) {
 326         HDB_extension ext;
 327         ssize_t len;
 328         void *d;
 329
 330         len = strlen(p);
 331         d = malloc(len);
 332
 333         len = hex_decode(p, d, len);
 334         if (len < 0) {
 335             free(d);
 336             return -1;
 337         }
 338
 339         ret = decode_HDB_extension(d, len, &ext, NULL);
 340         free(d);
 341         if (ret)
 342             return -1;
 343         d = realloc((*e)->val, ((*e)->len + 1) * sizeof((*e)->val[0]));
 344         if (d == NULL)
 345             abort();
 346         (*e)->val = d;
 347         (*e)->val[(*e)->len] = ext;
 348         (*e)->len++;
 349
 350         p = strsep(&str, ":");
 351     }
 352
 353     return 0;
 354 }
 355
 356
 357 /*
 358  * Parse the dump file in `filename' and create the database (merging
 359  * iff merge)
 360  */
 361
 362 static int
 363 doit(const char *filename, int mergep)
 364 {
 365     krb5_error_code ret;
 366     FILE *f;
 367     char s[8192]; /* XXX should fix this properly */
 368     char *p;
 369     int line;
 370     int flags = O_RDWR;
 371     struct entry e;
 372     hdb_entry_ex ent;
 373     HDB *db = _kadm5_s_get_db(kadm_handle);
 374
 375     f = fopen(filename, "r");
 376     if(f == NULL){
 377         krb5_warn(context, errno, "fopen(%s)", filename);
 378         return 1;
 379     }
 380     ret = kadm5_log_truncate (kadm_handle);
 381     if (ret) {
 382         fclose (f);
 383         krb5_warn(context, ret, "kadm5_log_truncate");
 384         return 1;
 385     }
 386
 387     if(!mergep)
 388         flags |= O_CREAT | O_TRUNC;
 389     ret = db->hdb_open(context, db, flags, 0600);
 390     if(ret){
 391         krb5_warn(context, ret, "hdb_open");
 392         fclose(f);
 393         return 1;
 394     }
 395     line = 0;
 396     ret = 0;
 397     while(fgets(s, sizeof(s), f) != NULL) {
 398         line++;
 399
 400         p = s;
 401         while (isspace((unsigned char)*p))
 402             p++;
 403
 404         e.principal = p;
 405         for(p = s; *p; p++){
 406             if(*p == '\\')
 407                 p++;
 408             else if(isspace((unsigned char)*p)) {
 409                 *p = 0;
 410                 break;
 411             }
 412         }
 413         p = skip_next(p);
 414
 415         e.key = p;
 416         p = skip_next(p);
 417
 418         e.created = p;
 419         p = skip_next(p);
 420
 421         e.modified = p;
 422         p = skip_next(p);
 423
 424         e.valid_start = p;
 425         p = skip_next(p);
 426
 427         e.valid_end = p;
 428         p = skip_next(p);
 429
 430         e.pw_end = p;
 431         p = skip_next(p);
 432
 433         e.max_life = p;
 434         p = skip_next(p);
 435
 436         e.max_renew = p;
 437         p = skip_next(p);
 438
 439         e.flags = p;
 440         p = skip_next(p);
 441
 442         e.generation = p;
 443         p = skip_next(p);
 444
 445         e.extensions = p;
 446         skip_next(p);
 447
 448         memset(&ent, 0, sizeof(ent));
 449         ret = krb5_parse_name(context, e.principal, &ent.entry.principal);
 450         if(ret) {
 451             const char *msg = krb5_get_error_message(context, ret);
 452             fprintf(stderr, "%s:%d:%s (%s)\n",
 453                     filename, line, msg, e.principal);
 454             krb5_free_error_message(context, msg);
 455             continue;
 456         }
 457
 458         if (parse_keys(&ent.entry, e.key)) {
 459             fprintf (stderr, "%s:%d:error parsing keys (%s)\n",
 460                      filename, line, e.key);
 461             hdb_free_entry (context, &ent);
 462             continue;
 463         }
 464
 465         if (parse_event(&ent.entry.created_by, e.created) == -1) {
 466             fprintf (stderr, "%s:%d:error parsing created event (%s)\n",
 467                      filename, line, e.created);
 468             hdb_free_entry (context, &ent);
 469             continue;
 470         }
 471         if (parse_event_alloc (&ent.entry.modified_by, e.modified) == -1) {
 472             fprintf (stderr, "%s:%d:error parsing event (%s)\n",
 473                      filename, line, e.modified);
 474             hdb_free_entry (context, &ent);
 475             continue;
 476         }
 477         if (parse_time_string_alloc (&ent.entry.valid_start, e.valid_start) == -1) {
 478             fprintf (stderr, "%s:%d:error parsing time (%s)\n",
 479                      filename, line, e.valid_start);
 480             hdb_free_entry (context, &ent);
 481             continue;
 482         }
 483         if (parse_time_string_alloc (&ent.entry.valid_end,   e.valid_end) == -1) {
 484             fprintf (stderr, "%s:%d:error parsing time (%s)\n",
 485                      filename, line, e.valid_end);
 486             hdb_free_entry (context, &ent);
 487             continue;
 488         }
 489         if (parse_time_string_alloc (&ent.entry.pw_end,      e.pw_end) == -1) {
 490             fprintf (stderr, "%s:%d:error parsing time (%s)\n",
 491                      filename, line, e.pw_end);
 492             hdb_free_entry (context, &ent);
 493             continue;
 494         }
 495
 496         if (parse_integer_alloc (&ent.entry.max_life,  e.max_life) == -1) {
 497             fprintf (stderr, "%s:%d:error parsing lifetime (%s)\n",
 498                      filename, line, e.max_life);
 499             hdb_free_entry (context, &ent);
 500             continue;
 501
 502         }
 503         if (parse_integer_alloc (&ent.entry.max_renew, e.max_renew) == -1) {
 504             fprintf (stderr, "%s:%d:error parsing lifetime (%s)\n",
 505                      filename, line, e.max_renew);
 506             hdb_free_entry (context, &ent);
 507             continue;
 508         }
 509
 510         if (parse_hdbflags2int (&ent.entry.flags, e.flags) != 1) {
 511             fprintf (stderr, "%s:%d:error parsing flags (%s)\n",
 512                      filename, line, e.flags);
 513             hdb_free_entry (context, &ent);
 514             continue;
 515         }
 516
 517         if(parse_generation(e.generation, &ent.entry.generation) == -1) {
 518             fprintf (stderr, "%s:%d:error parsing generation (%s)\n",
 519                      filename, line, e.generation);
 520             hdb_free_entry (context, &ent);
 521             continue;
 522         }
 523
 524         if(parse_extensions(e.extensions, &ent.entry.extensions) == -1) {
 525             fprintf (stderr, "%s:%d:error parsing extension (%s)\n",
 526                      filename, line, e.extensions);
 527             hdb_free_entry (context, &ent);
 528             continue;
 529         }
 530
 531         ret = db->hdb_store(context, db, HDB_F_REPLACE, &ent);
 532         hdb_free_entry (context, &ent);
 533         if (ret) {
 534             krb5_warn(context, ret, "db_store");
 535             break;
 536         }
 537     }
 538     db->hdb_close(context, db);
 539     fclose(f);
 540     return ret != 0;
 541 }
 542
 543
 544 extern int local_flag;
 545
 546 static int
 547 loadit(int mergep, const char *name, int argc, char **argv)
 548 {
 549     if(!local_flag) {
 550         krb5_warnx(context, "%s is only available in local (-l) mode", name);
 551         return 0;
 552     }
 553
 554     return doit(argv[0], mergep);
 555 }
 556
 557 int
 558 load(void *opt, int argc, char **argv)
 559 {
 560     return loadit(0, "load", argc, argv);
 561 }
 562
 563 int
 564 merge(void *opt, int argc, char **argv)
 565 {
 566     return loadit(1, "merge", argc, argv);
 567 }