kadmin/get.c

   1 /*
   2  * Copyright (c) 1997-2006 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 <parse_units.h>
  37 #include <rtbl.h>
  38
  39 static struct field_name {
  40     const char *fieldname;
  41     unsigned int fieldvalue;
  42     unsigned int subvalue;
  43     uint32_t extra_mask;
  44     const char *default_header;
  45     const char *def_longheader;
  46     unsigned int flags;
  47 } field_names[] = {
  48     { "principal", KADM5_PRINCIPAL, 0, 0, "Principal", "Principal", 0 },
  49     { "princ_expire_time", KADM5_PRINC_EXPIRE_TIME, 0, 0, "Expiration", "Principal expires", 0 },
  50     { "pw_expiration", KADM5_PW_EXPIRATION, 0, 0, "PW-exp", "Password expires", 0 },
  51     { "last_pwd_change", KADM5_LAST_PWD_CHANGE, 0, 0, "PW-change", "Last password change", 0 },
  52     { "max_life", KADM5_MAX_LIFE, 0, 0, "Max life", "Max ticket life", 0 },
  53     { "max_rlife", KADM5_MAX_RLIFE, 0, 0, "Max renew", "Max renewable life", 0 },
  54     { "mod_time", KADM5_MOD_TIME, 0, 0, "Mod time", "Last modified", 0 },
  55     { "mod_name", KADM5_MOD_NAME, 0, 0, "Modifier", "Modifier", 0 },
  56     { "attributes", KADM5_ATTRIBUTES, 0, 0, "Attributes", "Attributes", 0 },
  57     { "kvno", KADM5_KVNO, 0, 0, "Kvno", "Kvno", RTBL_ALIGN_RIGHT  },
  58     { "mkvno", KADM5_MKVNO, 0, 0, "Mkvno", "Mkvno", RTBL_ALIGN_RIGHT },
  59     { "last_success", KADM5_LAST_SUCCESS, 0, 0, "Last login", "Last successful login", 0 },
  60     { "last_failed", KADM5_LAST_FAILED, 0, 0, "Last fail", "Last failed login", 0 },
  61     { "fail_auth_count", KADM5_FAIL_AUTH_COUNT, 0, 0, "Fail count", "Failed login count", RTBL_ALIGN_RIGHT },
  62     { "policy", KADM5_POLICY, 0, 0, "Policy", "Policy", 0 },
  63     { "keytypes", KADM5_KEY_DATA, 0, KADM5_PRINCIPAL | KADM5_KVNO, "Keytypes", "Keytypes", 0 },
  64     { "password", KADM5_TL_DATA, KRB5_TL_PASSWORD, KADM5_KEY_DATA, "Password", "Password", 0 },
  65     { "pkinit-acl", KADM5_TL_DATA, KRB5_TL_PKINIT_ACL, 0, "PK-INIT ACL", "PK-INIT ACL", 0 },
  66     { "aliases", KADM5_TL_DATA, KRB5_TL_ALIASES, 0, "Aliases", "Aliases", 0 },
  67     { "hist-kvno-diff-clnt", KADM5_TL_DATA, KRB5_TL_HIST_KVNO_DIFF_CLNT, 0, "Clnt hist keys", "Historic keys allowed for client", 0 },
  68     { "hist-kvno-diff-svc", KADM5_TL_DATA, KRB5_TL_HIST_KVNO_DIFF_SVC, 0, "Svc hist keys", "Historic keys allowed for service", 0 },
  69     { NULL, 0, 0, 0, NULL, NULL, 0 }
  70 };
  71
  72 struct field_info {
  73     struct field_name *ff;
  74     char *header;
  75     struct field_info *next;
  76 };
  77
  78 struct get_entry_data {
  79     void (*format)(struct get_entry_data*, kadm5_principal_ent_t);
  80     rtbl_t table;
  81     uint32_t mask;
  82     uint32_t extra_mask;
  83     struct field_info *chead, **ctail;
  84 };
  85
  86 static int
  87 add_column(struct get_entry_data *data, struct field_name *ff, const char *header)
  88 {
  89     struct field_info *f = malloc(sizeof(*f));
  90     if (f == NULL)
  91         return ENOMEM;
  92     f->ff = ff;
  93     if(header)
  94         f->header = strdup(header);
  95     else
  96         f->header = NULL;
  97     f->next = NULL;
  98     *data->ctail = f;
  99     data->ctail = &f->next;
 100     data->mask |= ff->fieldvalue;
 101     data->extra_mask |= ff->extra_mask;
 102     if(data->table != NULL)
 103         rtbl_add_column_by_id(data->table, ff->fieldvalue,
 104                               header ? header : ff->default_header, ff->flags);
 105     return 0;
 106 }
 107
 108 /*
 109  * return 0 iff `salt' actually is the same as the current salt in `k'
 110  */
 111
 112 static int
 113 cmp_salt (const krb5_salt *salt, const krb5_key_data *k)
 114 {
 115     if (salt->salttype != (size_t)k->key_data_type[1])
 116         return 1;
 117     if (salt->saltvalue.length != (size_t)k->key_data_length[1])
 118         return 1;
 119     return memcmp (salt->saltvalue.data, k->key_data_contents[1],
 120                    salt->saltvalue.length);
 121 }
 122
 123 static void
 124 format_keytype(krb5_key_data *k, krb5_salt *def_salt, char *buf, size_t buf_len)
 125 {
 126     krb5_error_code ret;
 127     char *s;
 128     int aret;
 129
 130     buf[0] = '\0';
 131     ret = krb5_enctype_to_string (context,
 132                                   k->key_data_type[0],
 133                                   &s);
 134     if (ret) {
 135         aret = asprintf (&s, "unknown(%d)", k->key_data_type[0]);
 136         if (aret == -1)
 137             return;     /* Nothing to do here, we have no way to pass the err */
 138     }
 139     strlcpy(buf, s, buf_len);
 140     free(s);
 141
 142     strlcat(buf, "(", buf_len);
 143
 144     ret = krb5_salttype_to_string (context,
 145                                    k->key_data_type[0],
 146                                    k->key_data_type[1],
 147                                    &s);
 148     if (ret) {
 149         aret = asprintf (&s, "unknown(%d)", k->key_data_type[1]);
 150         if (aret == -1)
 151             return;     /* Again, nothing else to do... */
 152     }
 153     strlcat(buf, s, buf_len);
 154     free(s);
 155
 156     aret = 0;
 157     if (cmp_salt(def_salt, k) == 0)
 158         s = strdup("");
 159     else if(k->key_data_length[1] == 0)
 160         s = strdup("()");
 161     else
 162         aret = asprintf (&s, "(%.*s)", k->key_data_length[1],
 163                          (char *)k->key_data_contents[1]);
 164     if (aret == -1 || s == NULL)
 165         return;         /* Again, nothing else we can do... */
 166     strlcat(buf, s, buf_len);
 167     free(s);
 168     aret = asprintf (&s, "[%d]", k->key_data_kvno);
 169     if (aret == -1)
 170         return;
 171     strlcat(buf, ")", buf_len);
 172
 173     strlcat(buf, s, buf_len);
 174     free(s);
 175 }
 176
 177 static void
 178 format_field(kadm5_principal_ent_t princ, unsigned int field,
 179              unsigned int subfield, char *buf, size_t buf_len, int condensed)
 180 {
 181     switch(field) {
 182     case KADM5_PRINCIPAL:
 183         if(condensed)
 184             krb5_unparse_name_fixed_short(context, princ->principal, buf, buf_len);
 185         else
 186             krb5_unparse_name_fixed(context, princ->principal, buf, buf_len);
 187         break;
 188
 189     case KADM5_PRINC_EXPIRE_TIME:
 190         time_t2str(princ->princ_expire_time, buf, buf_len, !condensed);
 191         break;
 192
 193     case KADM5_PW_EXPIRATION:
 194         time_t2str(princ->pw_expiration, buf, buf_len, !condensed);
 195         break;
 196
 197     case KADM5_LAST_PWD_CHANGE:
 198         time_t2str(princ->last_pwd_change, buf, buf_len, !condensed);
 199         break;
 200
 201     case KADM5_MAX_LIFE:
 202         deltat2str(princ->max_life, buf, buf_len);
 203         break;
 204
 205     case KADM5_MAX_RLIFE:
 206         deltat2str(princ->max_renewable_life, buf, buf_len);
 207         break;
 208
 209     case KADM5_MOD_TIME:
 210         time_t2str(princ->mod_date, buf, buf_len, !condensed);
 211         break;
 212
 213     case KADM5_MOD_NAME:
 214         if (princ->mod_name == NULL)
 215             strlcpy(buf, "unknown", buf_len);
 216         else if(condensed)
 217             krb5_unparse_name_fixed_short(context, princ->mod_name, buf, buf_len);
 218         else
 219             krb5_unparse_name_fixed(context, princ->mod_name, buf, buf_len);
 220         break;
 221     case KADM5_ATTRIBUTES:
 222         attributes2str (princ->attributes, buf, buf_len);
 223         break;
 224     case KADM5_KVNO:
 225         snprintf(buf, buf_len, "%d", princ->kvno);
 226         break;
 227     case KADM5_MKVNO:
 228         /* XXX libkadm5srv decrypts the keys, so mkvno is always 0. */
 229         strlcpy(buf, "unknown", buf_len);
 230         break;
 231     case KADM5_LAST_SUCCESS:
 232         time_t2str(princ->last_success, buf, buf_len, !condensed);
 233         break;
 234     case KADM5_LAST_FAILED:
 235         time_t2str(princ->last_failed, buf, buf_len, !condensed);
 236         break;
 237     case KADM5_FAIL_AUTH_COUNT:
 238         snprintf(buf, buf_len, "%d", princ->fail_auth_count);
 239         break;
 240     case KADM5_POLICY:
 241         if(princ->policy != NULL)
 242             strlcpy(buf, princ->policy, buf_len);
 243         else
 244             strlcpy(buf, "none", buf_len);
 245         break;
 246     case KADM5_KEY_DATA:{
 247         krb5_salt def_salt;
 248         int i;
 249         char buf2[1024];
 250         krb5_get_pw_salt (context, princ->principal, &def_salt);
 251
 252         *buf = '\0';
 253         for (i = 0; i < princ->n_key_data; ++i) {
 254             format_keytype(&princ->key_data[i], &def_salt, buf2, sizeof(buf2));
 255             if(i > 0)
 256                 strlcat(buf, ", ", buf_len);
 257             strlcat(buf, buf2, buf_len);
 258         }
 259         krb5_free_salt (context, def_salt);
 260         break;
 261     }
 262     case KADM5_TL_DATA: {
 263         krb5_tl_data *tl;
 264
 265         for (tl = princ->tl_data; tl != NULL; tl = tl->tl_data_next)
 266             if ((unsigned)tl->tl_data_type == subfield)
 267                 break;
 268         if (tl == NULL) {
 269             strlcpy(buf, "", buf_len);
 270             break;
 271         }
 272
 273         switch (subfield) {
 274         case KRB5_TL_PASSWORD:
 275             snprintf(buf, buf_len, "\"%.*s\"",
 276                      (int)tl->tl_data_length,
 277                      (const char *)tl->tl_data_contents);
 278             break;
 279         case KRB5_TL_PKINIT_ACL: {
 280             HDB_Ext_PKINIT_acl acl;
 281             size_t size;
 282             int ret;
 283             size_t i;
 284
 285             ret = decode_HDB_Ext_PKINIT_acl(tl->tl_data_contents,
 286                                             tl->tl_data_length,
 287                                             &acl,
 288                                             &size);
 289             if (ret) {
 290                 snprintf(buf, buf_len, "failed to decode ACL");
 291                 break;
 292             }
 293
 294             buf[0] = '\0';
 295             for (i = 0; i < acl.len; i++) {
 296                 strlcat(buf, "subject: ", buf_len);
 297                 strlcat(buf, acl.val[i].subject, buf_len);
 298                 if (acl.val[i].issuer) {
 299                     strlcat(buf, " issuer:", buf_len);
 300                     strlcat(buf, *acl.val[i].issuer, buf_len);
 301                 }
 302                 if (acl.val[i].anchor) {
 303                     strlcat(buf, " anchor:", buf_len);
 304                     strlcat(buf, *acl.val[i].anchor, buf_len);
 305                 }
 306                 if (i + 1 < acl.len)
 307                     strlcat(buf, ", ", buf_len);
 308             }
 309             free_HDB_Ext_PKINIT_acl(&acl);
 310             break;
 311         }
 312         case KRB5_TL_ALIASES: {
 313             HDB_Ext_Aliases alias;
 314             size_t size;
 315             int ret;
 316             size_t i;
 317
 318             ret = decode_HDB_Ext_Aliases(tl->tl_data_contents,
 319                                          tl->tl_data_length,
 320                                          &alias,
 321                                          &size);
 322             if (ret) {
 323                 snprintf(buf, buf_len, "failed to decode alias");
 324                 break;
 325             }
 326             buf[0] = '\0';
 327             for (i = 0; i < alias.aliases.len; i++) {
 328                 char *p;
 329                 ret = krb5_unparse_name(context, &alias.aliases.val[i], &p);
 330                 if (ret)
 331                     break;
 332                 if (i > 0)
 333                     strlcat(buf, " ", buf_len);
 334                 strlcat(buf, p, buf_len);
 335                 free(p);
 336             }
 337             free_HDB_Ext_Aliases(&alias);
 338             break;
 339         }
 340         default:
 341             snprintf(buf, buf_len, "unknown type %d", subfield);
 342             break;
 343         }
 344         break;
 345     }
 346     default:
 347         strlcpy(buf, "<unknown>", buf_len);
 348         break;
 349     }
 350 }
 351
 352 static void
 353 print_entry_short(struct get_entry_data *data, kadm5_principal_ent_t princ)
 354 {
 355     char buf[1024];
 356     struct field_info *f;
 357
 358     for(f = data->chead; f != NULL; f = f->next) {
 359         format_field(princ, f->ff->fieldvalue, f->ff->subvalue, buf, sizeof(buf), 1);
 360         rtbl_add_column_entry_by_id(data->table, f->ff->fieldvalue, buf);
 361     }
 362 }
 363
 364 static void
 365 print_entry_long(struct get_entry_data *data, kadm5_principal_ent_t princ)
 366 {
 367     char buf[1024];
 368     struct field_info *f;
 369     int width = 0;
 370
 371     for(f = data->chead; f != NULL; f = f->next) {
 372         int w = strlen(f->header ? f->header : f->ff->def_longheader);
 373         if(w > width)
 374             width = w;
 375     }
 376     for(f = data->chead; f != NULL; f = f->next) {
 377         format_field(princ, f->ff->fieldvalue, f->ff->subvalue, buf, sizeof(buf), 0);
 378         printf("%*s: %s\n", width, f->header ? f->header : f->ff->def_longheader, buf);
 379     }
 380     printf("\n");
 381 }
 382
 383 static int
 384 do_get_entry(krb5_principal principal, void *data)
 385 {
 386     kadm5_principal_ent_rec princ;
 387     krb5_error_code ret;
 388     struct get_entry_data *e = data;
 389
 390     memset(&princ, 0, sizeof(princ));
 391     ret = kadm5_get_principal(kadm_handle, principal,
 392                               &princ,
 393                               e->mask | e->extra_mask);
 394     if(ret)
 395         return ret;
 396     else {
 397         (e->format)(e, &princ);
 398         kadm5_free_principal_ent(kadm_handle, &princ);
 399     }
 400     return 0;
 401 }
 402
 403 static void
 404 free_columns(struct get_entry_data *data)
 405 {
 406     struct field_info *f, *next;
 407     for(f = data->chead; f != NULL; f = next) {
 408         free(f->header);
 409         next = f->next;
 410         free(f);
 411     }
 412     data->chead = NULL;
 413     data->ctail = &data->chead;
 414 }
 415
 416 static int
 417 setup_columns(struct get_entry_data *data, const char *column_info)
 418 {
 419     char buf[1024], *q;
 420     char *field, *header;
 421     struct field_name *f;
 422
 423     while(strsep_copy(&column_info, ",", buf, sizeof(buf)) != -1) {
 424         q = buf;
 425         field = strsep(&q, "=");
 426         header = strsep(&q, "=");
 427         for(f = field_names; f->fieldname != NULL; f++) {
 428             if(strcasecmp(field, f->fieldname) == 0) {
 429                 add_column(data, f, header);
 430                 break;
 431             }
 432         }
 433         if(f->fieldname == NULL) {
 434             krb5_warnx(context, "unknown field name \"%s\"", field);
 435             free_columns(data);
 436             return -1;
 437         }
 438     }
 439     return 0;
 440 }
 441
 442 static int
 443 do_list_entry(krb5_principal principal, void *data)
 444 {
 445     char buf[1024];
 446     krb5_error_code ret;
 447
 448     ret = krb5_unparse_name_fixed_short(context, principal, buf, sizeof(buf));
 449     if (ret != 0)
 450         return ret;
 451     printf("%s\n", buf);
 452     return 0;
 453 }
 454
 455 static int
 456 listit(const char *funcname, int argc, char **argv)
 457 {
 458     int i;
 459     krb5_error_code ret, saved_ret = 0;
 460
 461     for (i = 0; i < argc; i++) {
 462         ret = foreach_principal(argv[i], do_list_entry, funcname, NULL);
 463         if (saved_ret == 0 && ret != 0)
 464             saved_ret = ret;
 465     }
 466     return saved_ret != 0;
 467 }
 468
 469 #define DEFAULT_COLUMNS_SHORT "principal,princ_expire_time,pw_expiration,last_pwd_change,max_life,max_rlife"
 470 #define DEFAULT_COLUMNS_LONG "principal,princ_expire_time,pw_expiration,last_pwd_change,max_life,max_rlife,kvno,mkvno,last_success,last_failed,fail_auth_count,mod_time,mod_name,attributes,keytypes,pkinit-acl,aliases"
 471
 472 static int
 473 getit(struct get_options *opt, const char *name, int argc, char **argv)
 474 {
 475     int i;
 476     krb5_error_code ret;
 477     struct get_entry_data data;
 478
 479     if(opt->long_flag == -1 && (opt->short_flag == 1 || opt->terse_flag == 1))
 480         opt->long_flag = 0;
 481     if(opt->short_flag == -1 && (opt->long_flag == 1 || opt->terse_flag == 1))
 482         opt->short_flag = 0;
 483     if(opt->terse_flag == -1 && (opt->long_flag == 1 || opt->short_flag == 1))
 484         opt->terse_flag = 0;
 485     if(opt->long_flag == 0 && opt->short_flag == 0 && opt->terse_flag == 0)
 486         opt->short_flag = 1;
 487
 488     if (opt->terse_flag)
 489         return listit(name, argc, argv);
 490
 491     data.table = NULL;
 492     data.chead = NULL;
 493     data.ctail = &data.chead;
 494     data.mask = 0;
 495     data.extra_mask = 0;
 496
 497     if(opt->short_flag) {
 498         data.table = rtbl_create();
 499         rtbl_set_separator(data.table, "  ");
 500         data.format = print_entry_short;
 501     } else
 502         data.format = print_entry_long;
 503     if(opt->column_info_string == NULL) {
 504         if(opt->long_flag)
 505             ret = setup_columns(&data, DEFAULT_COLUMNS_LONG);
 506         else
 507             ret = setup_columns(&data, DEFAULT_COLUMNS_SHORT);
 508     } else
 509         ret = setup_columns(&data, opt->column_info_string);
 510
 511     if(ret != 0) {
 512         if(data.table != NULL)
 513             rtbl_destroy(data.table);
 514         return 0;
 515     }
 516
 517     for(i = 0; i < argc; i++)
 518         ret = foreach_principal(argv[i], do_get_entry, name, &data);
 519
 520     if(data.table != NULL) {
 521         rtbl_format(data.table, stdout);
 522         rtbl_destroy(data.table);
 523     }
 524     free_columns(&data);
 525     return ret != 0;
 526 }
 527
 528 int
 529 get_entry(struct get_options *opt, int argc, char **argv)
 530 {
 531     return getit(opt, "get", argc, argv);
 532 }
 533
 534 int
 535 list_princs(struct list_options *opt, int argc, char **argv)
 536 {
 537     if(sizeof(struct get_options) != sizeof(struct list_options)) {
 538         krb5_warnx(context, "programmer error: sizeof(struct get_options) != sizeof(struct list_options)");
 539         return 0;
 540     }
 541     return getit((struct get_options*)opt, "list", argc, argv);
 542 }