crypto/dist/heimdal/kuser/kinit.c

   1 /*
   2  * Copyright (c) 1997-2007 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 "kuser_locl.h"
  35 __RCSID("$Heimdal: kinit.c 22116 2007-12-03 21:22:58Z lha $"
  36         "$NetBSD$");
  37
  38 #include "krb5-v4compat.h"
  39
  40 #include "heimntlm.h"
  41
  42 int forwardable_flag    = -1;
  43 int proxiable_flag      = -1;
  44 int renewable_flag      = -1;
  45 int renew_flag          = 0;
  46 int pac_flag            = -1;
  47 int validate_flag       = 0;
  48 int version_flag        = 0;
  49 int help_flag           = 0;
  50 int addrs_flag          = -1;
  51 struct getarg_strings extra_addresses;
  52 int anonymous_flag      = 0;
  53 char *lifetime          = NULL;
  54 char *renew_life        = NULL;
  55 char *server_str        = NULL;
  56 char *cred_cache        = NULL;
  57 char *start_str         = NULL;
  58 struct getarg_strings etype_str;
  59 int use_keytab          = 0;
  60 char *keytab_str        = NULL;
  61 int do_afslog           = -1;
  62 int get_v4_tgt          = -1;
  63 int convert_524         = 0;
  64 int fcache_version;
  65 char *password_file     = NULL;
  66 char *pk_user_id        = NULL;
  67 char *pk_x509_anchors   = NULL;
  68 int pk_use_enckey       = 0;
  69 static int canonicalize_flag = 0;
  70 static char *ntlm_domain;
  71
  72 static char *krb4_cc_name;
  73
  74 static struct getargs args[] = {
  75     /*
  76      * used by MIT
  77      * a: ~A
  78      * V: verbose
  79      * F: ~f
  80      * P: ~p
  81      * C: v4 cache name?
  82      * 5:
  83      */
  84     { "524init",        '4', arg_flag, &get_v4_tgt,
  85       "obtain version 4 TGT" },
  86
  87     { "524convert",     '9', arg_flag, &convert_524,
  88       "only convert ticket to version 4" },
  89
  90     { "afslog",         0  , arg_flag, &do_afslog,
  91       "obtain afs tokens"  },
  92
  93     { "cache",          'c', arg_string, &cred_cache,
  94       "credentials cache", "cachename" },
  95
  96     { "forwardable",    'f', arg_flag, &forwardable_flag,
  97       "get forwardable tickets"},
  98
  99     { "keytab",         't', arg_string, &keytab_str,
 100       "keytab to use", "keytabname" },
 101
 102     { "lifetime",       'l', arg_string, &lifetime,
 103       "lifetime of tickets", "time"},
 104
 105     { "proxiable",      'p', arg_flag, &proxiable_flag,
 106       "get proxiable tickets" },
 107
 108     { "renew",          'R', arg_flag, &renew_flag,
 109       "renew TGT" },
 110
 111     { "renewable",      0,   arg_flag, &renewable_flag,
 112       "get renewable tickets" },
 113
 114     { "renewable-life", 'r', arg_string, &renew_life,
 115       "renewable lifetime of tickets", "time" },
 116
 117     { "server",         'S', arg_string, &server_str,
 118       "server to get ticket for", "principal" },
 119
 120     { "start-time",     's', arg_string, &start_str,
 121       "when ticket gets valid", "time" },
 122
 123     { "use-keytab",     'k', arg_flag, &use_keytab,
 124       "get key from keytab" },
 125
 126     { "validate",       'v', arg_flag, &validate_flag,
 127       "validate TGT" },
 128
 129     { "enctypes",       'e', arg_strings, &etype_str,
 130       "encryption types to use", "enctypes" },
 131
 132     { "fcache-version", 0,   arg_integer, &fcache_version,
 133       "file cache version to create" },
 134
 135     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 136       "request a ticket with no addresses" },
 137
 138     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 139       "include these extra addresses", "addresses" },
 140
 141     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 142       "request an anonymous ticket" },
 143
 144     { "request-pac",    0,   arg_flag,  &pac_flag,
 145       "request a Windows PAC" },
 146
 147     { "password-file",  0,   arg_string, &password_file,
 148       "read the password from a file" },
 149
 150     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 151       "canonicalize client principal" },
 152 #ifdef PKINIT
 153     { "pk-user",        'C',    arg_string,     &pk_user_id,
 154       "principal's public/private/certificate identifier", "id" },
 155
 156     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 157       "directory with CA certificates", "directory" },
 158
 159     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 160       "Use RSA encrypted reply (instead of DH)" },
 161 #endif
 162     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 163       "NTLM domain", "domain" },
 164
 165     { "version",        0,   arg_flag, &version_flag },
 166     { "help",           0,   arg_flag, &help_flag }
 167 };
 168
 169 static void
 170 usage (int ret)
 171 {
 172     arg_printusage (args,
 173                     sizeof(args)/sizeof(*args),
 174                     NULL,
 175                     "[principal [command]]");
 176     exit (ret);
 177 }
 178
 179 static krb5_error_code
 180 get_server(krb5_context context,
 181            krb5_principal client,
 182            const char *server,
 183            krb5_principal *princ)
 184 {
 185     krb5_realm *client_realm;
 186     if(server)
 187         return krb5_parse_name(context, server, princ);
 188
 189     client_realm = krb5_princ_realm (context, client);
 190     return krb5_make_principal(context, princ, *client_realm,
 191                                KRB5_TGS_NAME, *client_realm, NULL);
 192 }
 193
 194 static krb5_error_code
 195 do_524init(krb5_context context, krb5_ccache ccache,
 196            krb5_creds *creds, const char *server)
 197 {
 198     krb5_error_code ret;
 199
 200     struct credentials c;
 201     krb5_creds in_creds, *real_creds;
 202
 203     if(creds != NULL)
 204         real_creds = creds;
 205     else {
 206         krb5_principal client;
 207         krb5_cc_get_principal(context, ccache, &client);
 208         memset(&in_creds, 0, sizeof(in_creds));
 209         ret = get_server(context, client, server, &in_creds.server);
 210         if(ret) {
 211             krb5_free_principal(context, client);
 212             return ret;
 213         }
 214         in_creds.client = client;
 215         ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
 216         krb5_free_principal(context, client);
 217         krb5_free_principal(context, in_creds.server);
 218         if(ret)
 219             return ret;
 220     }
 221     ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
 222     if(ret)
 223         krb5_warn(context, ret, "converting creds");
 224     else {
 225         krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
 226         if(tret)
 227             krb5_warn(context, tret, "saving v4 creds");
 228     }
 229
 230     if(creds == NULL)
 231         krb5_free_creds(context, real_creds);
 232     memset(&c, 0, sizeof(c));
 233
 234     return ret;
 235 }
 236
 237 static int
 238 renew_validate(krb5_context context,
 239                int renew,
 240                int validate,
 241                krb5_ccache cache,
 242                const char *server,
 243                krb5_deltat life)
 244 {
 245     krb5_error_code ret;
 246     krb5_creds in, *out = NULL;
 247     krb5_kdc_flags flags;
 248
 249     memset(&in, 0, sizeof(in));
 250
 251     ret = krb5_cc_get_principal(context, cache, &in.client);
 252     if(ret) {
 253         krb5_warn(context, ret, "krb5_cc_get_principal");
 254         return ret;
 255     }
 256     ret = get_server(context, in.client, server, &in.server);
 257     if(ret) {
 258         krb5_warn(context, ret, "get_server");
 259         goto out;
 260     }
 261
 262     if (renew) {
 263         /*
 264          * no need to check the error here, it's only to be
 265          * friendly to the user
 266          */
 267         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 268     }
 269
 270     flags.i = 0;
 271     flags.b.renewable         = flags.b.renew = renew;
 272     flags.b.validate          = validate;
 273
 274     if (forwardable_flag != -1)
 275         flags.b.forwardable       = forwardable_flag;
 276     else if (out)
 277         flags.b.forwardable       = out->flags.b.forwardable;
 278
 279     if (proxiable_flag != -1)
 280         flags.b.proxiable         = proxiable_flag;
 281     else if (out)
 282         flags.b.proxiable         = out->flags.b.proxiable;
 283
 284     if (anonymous_flag != -1)
 285         flags.b.request_anonymous = anonymous_flag;
 286     if(life)
 287         in.times.endtime = time(NULL) + life;
 288
 289     if (out) {
 290         krb5_free_creds (context, out);
 291         out = NULL;
 292     }
 293
 294
 295     ret = krb5_get_kdc_cred(context,
 296                             cache,
 297                             flags,
 298                             NULL,
 299                             NULL,
 300                             &in,
 301                             &out);
 302     if(ret) {
 303         krb5_warn(context, ret, "krb5_get_kdc_cred");
 304         goto out;
 305     }
 306     ret = krb5_cc_initialize(context, cache, in.client);
 307     if(ret) {
 308         krb5_free_creds (context, out);
 309         krb5_warn(context, ret, "krb5_cc_initialize");
 310         goto out;
 311     }
 312     ret = krb5_cc_store_cred(context, cache, out);
 313
 314     if(ret == 0 && server == NULL) {
 315         /* only do this if it's a general renew-my-tgt request */
 316         if(get_v4_tgt)
 317             do_524init(context, cache, out, NULL);
 318         if(do_afslog && k_hasafs())
 319             krb5_afslog(context, cache, NULL, NULL);
 320     }
 321
 322     krb5_free_creds (context, out);
 323     if(ret) {
 324         krb5_warn(context, ret, "krb5_cc_store_cred");
 325         goto out;
 326     }
 327 out:
 328     krb5_free_cred_contents(context, &in);
 329     return ret;
 330 }
 331
 332 static krb5_error_code
 333 store_ntlmkey(krb5_context context, krb5_ccache id,
 334               const char *domain, krb5_const_principal client,
 335               struct ntlm_buf *buf)
 336 {
 337     krb5_error_code ret;
 338     krb5_creds cred;
 339
 340     memset(&cred, 0, sizeof(cred));
 341
 342     ret = krb5_make_principal(context, &cred.server,
 343                               krb5_principal_get_realm(context, client),
 344                               "@ntlm-key", domain, NULL);
 345     if (ret)
 346         goto out;
 347     ret = krb5_copy_principal(context, client, &cred.client);
 348     if (ret)
 349         goto out;
 350
 351     cred.times.authtime = time(NULL);
 352     cred.times.endtime = time(NULL) + 3600 * 24 * 30; /* XXX */
 353     cred.session.keytype = ENCTYPE_ARCFOUR_HMAC_MD5;
 354     ret = krb5_data_copy(&cred.session.keyvalue, buf->data, buf->length);
 355     if (ret)
 356         goto out;
 357
 358     ret = krb5_cc_store_cred(context, id, &cred);
 359
 360 out:
 361     krb5_free_cred_contents (context, &cred);
 362     return 0;
 363 }
 364
 365 static krb5_error_code
 366 get_new_tickets(krb5_context context,
 367                 krb5_principal principal,
 368                 krb5_ccache ccache,
 369                 krb5_deltat ticket_life,
 370                 int interactive)
 371 {
 372     krb5_error_code ret;
 373     krb5_get_init_creds_opt *opt;
 374     krb5_creds cred;
 375     char passwd[256];
 376     krb5_deltat start_time = 0;
 377     krb5_deltat renew = 0;
 378     char *renewstr = NULL;
 379     krb5_enctype *enctype = NULL;
 380     struct ntlm_buf ntlmkey;
 381     krb5_ccache tempccache;
 382
 383     memset(&ntlmkey, 0, sizeof(ntlmkey));
 384     passwd[0] = '\0';
 385
 386     if (password_file) {
 387         FILE *f;
 388
 389         if (strcasecmp("STDIN", password_file) == 0)
 390             f = stdin;
 391         else
 392             f = fopen(password_file, "r");
 393         if (f == NULL)
 394             krb5_errx(context, 1, "Failed to open the password file %s",
 395                       password_file);
 396
 397         if (fgets(passwd, sizeof(passwd), f) == NULL)
 398             krb5_errx(context, 1,
 399                       "Failed to read password from file %s", password_file);
 400         if (f != stdin)
 401             fclose(f);
 402         passwd[strcspn(passwd, "\n")] = '\0';
 403     }
 404
 405
 406     memset(&cred, 0, sizeof(cred));
 407
 408     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 409     if (ret)
 410         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 411
 412     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 413         krb5_principal_get_realm(context, principal), opt);
 414
 415     if(forwardable_flag != -1)
 416         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 417     if(proxiable_flag != -1)
 418         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 419     if(anonymous_flag != -1)
 420         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 421     if (pac_flag != -1)
 422         krb5_get_init_creds_opt_set_pac_request(context, opt,
 423                                                 pac_flag ? TRUE : FALSE);
 424     if (canonicalize_flag)
 425         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 426     if (pk_user_id) {
 427         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 428                                                  principal,
 429                                                  pk_user_id,
 430                                                  pk_x509_anchors,
 431                                                  NULL,
 432                                                  NULL,
 433                                                  pk_use_enckey ? 2 : 0,
 434                                                  krb5_prompter_posix,
 435                                                  NULL,
 436                                                  passwd);
 437         if (ret)
 438             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 439     }
 440
 441     if (addrs_flag != -1)
 442         krb5_get_init_creds_opt_set_addressless(context, opt,
 443                                                 addrs_flag ? FALSE : TRUE);
 444
 445     if (renew_life == NULL && renewable_flag)
 446         renewstr = "1 month";
 447     if (renew_life)
 448         renewstr = renew_life;
 449     if (renewstr) {
 450         renew = parse_time (renewstr, "s");
 451         if (renew < 0)
 452             errx (1, "unparsable time: %s", renewstr);
 453
 454         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 455     }
 456
 457     if(ticket_life != 0)
 458         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 459
 460     if(start_str) {
 461         int tmp = parse_time (start_str, "s");
 462         if (tmp < 0)
 463             errx (1, "unparsable time: %s", start_str);
 464
 465         start_time = tmp;
 466     }
 467
 468     if(etype_str.num_strings) {
 469         int i;
 470
 471         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 472         if(enctype == NULL)
 473             errx(1, "out of memory");
 474         for(i = 0; i < etype_str.num_strings; i++) {
 475             ret = krb5_string_to_enctype(context,
 476                                          etype_str.strings[i],
 477                                          &enctype[i]);
 478             if(ret)
 479                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 480         }
 481         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 482                                                etype_str.num_strings);
 483     }
 484
 485     if(use_keytab || keytab_str) {
 486         krb5_keytab kt;
 487         if(keytab_str)
 488             ret = krb5_kt_resolve(context, keytab_str, &kt);
 489         else
 490             ret = krb5_kt_default(context, &kt);
 491         if (ret)
 492             krb5_err (context, 1, ret, "resolving keytab");
 493         ret = krb5_get_init_creds_keytab (context,
 494                                           &cred,
 495                                           principal,
 496                                           kt,
 497                                           start_time,
 498                                           server_str,
 499                                           opt);
 500         krb5_kt_close(context, kt);
 501     } else if (pk_user_id) {
 502         ret = krb5_get_init_creds_password (context,
 503                                             &cred,
 504                                             principal,
 505                                             passwd,
 506                                             krb5_prompter_posix,
 507                                             NULL,
 508                                             start_time,
 509                                             server_str,
 510                                             opt);
 511     } else if (!interactive) {
 512         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 513         krb5_get_init_creds_opt_free(context, opt);
 514         return 0;
 515     } else {
 516
 517         if (passwd[0] == '\0') {
 518             char *p, *prompt;
 519
 520             krb5_unparse_name (context, principal, &p);
 521             asprintf (&prompt, "%s's Password: ", p);
 522             free (p);
 523
 524             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 525                 memset(passwd, 0, sizeof(passwd));
 526                 exit(1);
 527             }
 528             free (prompt);
 529         }
 530
 531
 532         ret = krb5_get_init_creds_password (context,
 533                                             &cred,
 534                                             principal,
 535                                             passwd,
 536                                             krb5_prompter_posix,
 537                                             NULL,
 538                                             start_time,
 539                                             server_str,
 540                                             opt);
 541     }
 542     krb5_get_init_creds_opt_free(context, opt);
 543     if (ntlm_domain && passwd[0])
 544         heim_ntlm_nt_key(passwd, &ntlmkey);
 545     memset(passwd, 0, sizeof(passwd));
 546
 547     switch(ret){
 548     case 0:
 549         break;
 550     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 551         exit(1);
 552     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 553     case KRB5KRB_AP_ERR_MODIFIED:
 554     case KRB5KDC_ERR_PREAUTH_FAILED:
 555         krb5_errx(context, 1, "Password incorrect");
 556         break;
 557     case KRB5KRB_AP_ERR_V4_REPLY:
 558         krb5_errx(context, 1, "Looks like a Kerberos 4 reply");
 559         break;
 560     default:
 561         krb5_err(context, 1, ret, "krb5_get_init_creds");
 562     }
 563
 564     if(ticket_life != 0) {
 565         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 566             char life[64];
 567             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 568                                 life, sizeof(life));
 569             krb5_warnx(context, "NOTICE: ticket lifetime is %s", life);
 570         }
 571     }
 572     if(renew_life) {
 573         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 574             char life[64];
 575             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 576                                 life, sizeof(life));
 577             krb5_warnx(context, "NOTICE: ticket renewable lifetime is %s",
 578                        life);
 579         }
 580     }
 581
 582     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 583                              NULL, &tempccache);
 584     if (ret)
 585         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 586
 587     ret = krb5_cc_initialize (context, tempccache, cred.client);
 588     if (ret)
 589         krb5_err (context, 1, ret, "krb5_cc_initialize");
 590
 591     ret = krb5_cc_store_cred (context, tempccache, &cred);
 592     if (ret)
 593         krb5_err (context, 1, ret, "krb5_cc_store_cred");
 594
 595     krb5_free_cred_contents (context, &cred);
 596
 597     ret = krb5_cc_move(context, tempccache, ccache);
 598     if (ret)
 599         krb5_err (context, 1, ret, "krb5_cc_move");
 600
 601     if (ntlm_domain && ntlmkey.data)
 602         store_ntlmkey(context, ccache, ntlm_domain, principal, &ntlmkey);
 603
 604     if (enctype)
 605         free(enctype);
 606
 607     return 0;
 608 }
 609
 610 static time_t
 611 ticket_lifetime(krb5_context context, krb5_ccache cache,
 612                 krb5_principal client, const char *server)
 613 {
 614     krb5_creds in_cred, *cred;
 615     krb5_error_code ret;
 616     time_t timeout;
 617
 618     memset(&in_cred, 0, sizeof(in_cred));
 619
 620     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 621     if(ret) {
 622         krb5_warn(context, ret, "krb5_cc_get_principal");
 623         return 0;
 624     }
 625     ret = get_server(context, in_cred.client, server, &in_cred.server);
 626     if(ret) {
 627         krb5_free_principal(context, in_cred.client);
 628         krb5_warn(context, ret, "get_server");
 629         return 0;
 630     }
 631
 632     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 633                                cache, &in_cred, &cred);
 634     krb5_free_principal(context, in_cred.client);
 635     krb5_free_principal(context, in_cred.server);
 636     if(ret) {
 637         krb5_warn(context, ret, "krb5_get_credentials");
 638         return 0;
 639     }
 640     timeout = cred->times.endtime - cred->times.starttime;
 641     if (timeout < 0)
 642         timeout = 0;
 643     krb5_free_creds(context, cred);
 644     return timeout;
 645 }
 646
 647 struct renew_ctx {
 648     krb5_context context;
 649     krb5_ccache  ccache;
 650     krb5_principal principal;
 651     krb5_deltat ticket_life;
 652 };
 653
 654 static time_t
 655 renew_func(void *ptr)
 656 {
 657     struct renew_ctx *ctx = ptr;
 658     krb5_error_code ret;
 659     time_t expire;
 660     int new_tickets = 0;
 661
 662     if (renewable_flag) {
 663         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 664                              ctx->ccache, server_str, ctx->ticket_life);
 665         if (ret)
 666             new_tickets = 1;
 667     } else
 668         new_tickets = 1;
 669
 670     if (new_tickets)
 671         get_new_tickets(ctx->context, ctx->principal,
 672                         ctx->ccache, ctx->ticket_life, 0);
 673
 674     if(get_v4_tgt || convert_524)
 675         do_524init(ctx->context, ctx->ccache, NULL, server_str);
 676     if(do_afslog && k_hasafs())
 677         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 678
 679     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 680                              server_str) / 2;
 681     return expire + 1;
 682 }
 683
 684 int
 685 main (int argc, char **argv)
 686 {
 687     krb5_error_code ret;
 688     krb5_context context;
 689     krb5_ccache  ccache;
 690     krb5_principal principal;
 691     int optidx = 0;
 692     krb5_deltat ticket_life = 0;
 693     int parseflags = 0;
 694
 695     setprogname (argv[0]);
 696
 697     ret = krb5_init_context (&context);
 698     if (ret == KRB5_CONFIG_BADFORMAT)
 699         errx (1, "krb5_init_context failed to parse configuration file");
 700     else if (ret)
 701         errx(1, "krb5_init_context failed: %d", ret);
 702
 703     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 704         usage(1);
 705
 706     if (help_flag)
 707         usage (0);
 708
 709     if(version_flag) {
 710         print_version(NULL);
 711         exit(0);
 712     }
 713
 714     argc -= optidx;
 715     argv += optidx;
 716
 717     if (canonicalize_flag)
 718         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 719
 720     if (argv[0]) {
 721         ret = krb5_parse_name_flags (context, argv[0], parseflags, &principal);
 722         if (ret)
 723             krb5_err (context, 1, ret, "krb5_parse_name");
 724     } else {
 725         ret = krb5_get_default_principal (context, &principal);
 726         if (ret)
 727             krb5_err (context, 1, ret, "krb5_get_default_principal");
 728     }
 729
 730     if(fcache_version)
 731         krb5_set_fcache_version(context, fcache_version);
 732
 733     if(renewable_flag == -1)
 734         /* this seems somewhat pointless, but whatever */
 735         krb5_appdefault_boolean(context, "kinit",
 736                                 krb5_principal_get_realm(context, principal),
 737                                 "renewable", FALSE, &renewable_flag);
 738     if(get_v4_tgt == -1)
 739         krb5_appdefault_boolean(context, "kinit",
 740                                 krb5_principal_get_realm(context, principal),
 741                                 "krb4_get_tickets", FALSE, &get_v4_tgt);
 742     if(do_afslog == -1)
 743         krb5_appdefault_boolean(context, "kinit",
 744                                 krb5_principal_get_realm(context, principal),
 745                                 "afslog", TRUE, &do_afslog);
 746
 747     if(cred_cache)
 748         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 749     else {
 750         if(argc > 1) {
 751             char s[1024];
 752             ret = krb5_cc_gen_new(context, &krb5_fcc_ops, &ccache);
 753             if(ret)
 754                 krb5_err(context, 1, ret, "creating cred cache");
 755             snprintf(s, sizeof(s), "%s:%s",
 756                      krb5_cc_get_type(context, ccache),
 757                      krb5_cc_get_name(context, ccache));
 758             setenv("KRB5CCNAME", s, 1);
 759             if (get_v4_tgt) {
 760                 int fd;
 761                 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
 762                     krb5_errx(context, 1, "out of memory");
 763                 if((fd = mkstemp(krb4_cc_name)) >= 0) {
 764                     close(fd);
 765                     setenv("KRBTKFILE", krb4_cc_name, 1);
 766                 } else {
 767                     free(krb4_cc_name);
 768                     krb4_cc_name = NULL;
 769                 }
 770             }
 771         } else {
 772             ret = krb5_cc_cache_match(context, principal, NULL, &ccache);
 773             if (ret)
 774                 ret = krb5_cc_default (context, &ccache);
 775         }
 776     }
 777     if (ret)
 778         krb5_err (context, 1, ret, "resolving credentials cache");
 779
 780     if(argc > 1 && k_hasafs ())
 781         k_setpag();
 782
 783     if (lifetime) {
 784         int tmp = parse_time (lifetime, "s");
 785         if (tmp < 0)
 786             errx (1, "unparsable time: %s", lifetime);
 787
 788         ticket_life = tmp;
 789     }
 790
 791     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 792         krb5_errx(context, 1, "specifying both extra addresses and "
 793                   "no addresses makes no sense");
 794     {
 795         int i;
 796         krb5_addresses addresses;
 797         memset(&addresses, 0, sizeof(addresses));
 798         for(i = 0; i < extra_addresses.num_strings; i++) {
 799             ret = krb5_parse_address(context, extra_addresses.strings[i],
 800                                      &addresses);
 801             if (ret == 0) {
 802                 krb5_add_extra_addresses(context, &addresses);
 803                 krb5_free_addresses(context, &addresses);
 804             }
 805         }
 806         free_getarg_strings(&extra_addresses);
 807     }
 808
 809     if(renew_flag || validate_flag) {
 810         ret = renew_validate(context, renew_flag, validate_flag,
 811                              ccache, server_str, ticket_life);
 812         exit(ret != 0);
 813     }
 814
 815     if(!convert_524)
 816         get_new_tickets(context, principal, ccache, ticket_life, 1);
 817
 818     if(get_v4_tgt || convert_524)
 819         do_524init(context, ccache, NULL, server_str);
 820     if(do_afslog && k_hasafs())
 821         krb5_afslog(context, ccache, NULL, NULL);
 822     if(argc > 1) {
 823         struct renew_ctx ctx;
 824         time_t timeout;
 825
 826         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 827
 828         ctx.context = context;
 829         ctx.ccache = ccache;
 830         ctx.principal = principal;
 831         ctx.ticket_life = ticket_life;
 832
 833         ret = simple_execvp_timed(argv[1], argv+1,
 834                                   renew_func, &ctx, timeout);
 835 #define EX_NOEXEC       126
 836 #define EX_NOTFOUND     127
 837         if(ret == EX_NOEXEC)
 838             krb5_warnx(context, "permission denied: %s", argv[1]);
 839         else if(ret == EX_NOTFOUND)
 840             krb5_warnx(context, "command not found: %s", argv[1]);
 841
 842         krb5_cc_destroy(context, ccache);
 843         _krb5_krb_dest_tkt(context, krb4_cc_name);
 844         if(k_hasafs())
 845             k_unlog();
 846     } else {
 847         krb5_cc_close (context, ccache);
 848         ret = 0;
 849     }
 850     krb5_free_principal(context, principal);
 851     krb5_free_context (context);
 852     return ret;
 853 }