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