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
  36 #ifndef HEIMDAL_SMALLER
  37 #include "krb5-v4compat.h"
  38 #endif
  39
  40 struct krb5_dh_moduli;
  41 struct AlgorithmIdentifier;
  42 struct _krb5_krb_auth_data;
  43 #include <krb5-private.h>
  44
  45 #ifndef NO_NTLM
  46 #include "heimntlm.h"
  47 #endif
  48
  49 int forwardable_flag    = -1;
  50 int proxiable_flag      = -1;
  51 int renewable_flag      = -1;
  52 int renew_flag          = 0;
  53 int pac_flag            = -1;
  54 int validate_flag       = 0;
  55 int version_flag        = 0;
  56 int help_flag           = 0;
  57 int addrs_flag          = -1;
  58 struct getarg_strings extra_addresses;
  59 int anonymous_flag      = 0;
  60 char *lifetime          = NULL;
  61 char *renew_life        = NULL;
  62 char *server_str        = NULL;
  63 char *cred_cache        = NULL;
  64 char *start_str         = NULL;
  65 static int switch_cache_flags = 1;
  66 struct getarg_strings etype_str;
  67 int use_keytab          = 0;
  68 char *keytab_str        = NULL;
  69 int do_afslog           = -1;
  70 #ifndef HEIMDAL_SMALLER
  71 int get_v4_tgt          = -1;
  72 int convert_524         = 0;
  73 static char *krb4_cc_name;
  74 #endif
  75 int fcache_version;
  76 char *password_file     = NULL;
  77 char *pk_user_id        = NULL;
  78 int pk_enterprise_flag = 0;
  79 char *pk_x509_anchors   = NULL;
  80 int pk_use_enckey       = 0;
  81 static int canonicalize_flag = 0;
  82 static int enterprise_flag = 0;
  83 static int ok_as_delegate_flag = 0;
  84 static int use_referrals_flag = 0;
  85 static int windows_flag = 0;
  86 #ifndef NO_NTLM
  87 static char *ntlm_domain;
  88 #endif
  89
  90
  91 static struct getargs args[] = {
  92     /*
  93      * used by MIT
  94      * a: ~A
  95      * V: verbose
  96      * F: ~f
  97      * P: ~p
  98      * C: v4 cache name?
  99      * 5:
 100      */
 101 #ifndef HEIMDAL_SMALLER
 102     { "524init",        '4', arg_flag, &get_v4_tgt,
 103       NP_("obtain version 4 TGT", "") },
 104
 105     { "524convert",     '9', arg_flag, &convert_524,
 106       NP_("only convert ticket to version 4", "") },
 107 #endif
 108     { "afslog",         0  , arg_flag, &do_afslog,
 109       NP_("obtain afs tokens", "")  },
 110
 111     { "cache",          'c', arg_string, &cred_cache,
 112       NP_("credentials cache", ""), "cachename" },
 113
 114     { "forwardable",    'f', arg_flag, &forwardable_flag,
 115       NP_("get forwardable tickets", "")},
 116
 117     { "keytab",         't', arg_string, &keytab_str,
 118       NP_("keytab to use", ""), "keytabname" },
 119
 120     { "lifetime",       'l', arg_string, &lifetime,
 121       NP_("lifetime of tickets", ""), "time"},
 122
 123     { "proxiable",      'p', arg_flag, &proxiable_flag,
 124       NP_("get proxiable tickets", "") },
 125
 126     { "renew",          'R', arg_flag, &renew_flag,
 127       NP_("renew TGT", "") },
 128
 129     { "renewable",      0,   arg_flag, &renewable_flag,
 130       NP_("get renewable tickets", "") },
 131
 132     { "renewable-life", 'r', arg_string, &renew_life,
 133       NP_("renewable lifetime of tickets", ""), "time" },
 134
 135     { "server",         'S', arg_string, &server_str,
 136       NP_("server to get ticket for", ""), "principal" },
 137
 138     { "start-time",     's', arg_string, &start_str,
 139       NP_("when ticket gets valid", ""), "time" },
 140
 141     { "use-keytab",     'k', arg_flag, &use_keytab,
 142       NP_("get key from keytab", "") },
 143
 144     { "validate",       'v', arg_flag, &validate_flag,
 145       NP_("validate TGT", "") },
 146
 147     { "enctypes",       'e', arg_strings, &etype_str,
 148       NP_("encryption types to use", ""), "enctypes" },
 149
 150     { "fcache-version", 0,   arg_integer, &fcache_version,
 151       NP_("file cache version to create", "") },
 152
 153     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 154       NP_("request a ticket with no addresses", "") },
 155
 156     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 157       NP_("include these extra addresses", ""), "addresses" },
 158
 159     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 160       NP_("request an anonymous ticket", "") },
 161
 162     { "request-pac",    0,   arg_flag,  &pac_flag,
 163       NP_("request a Windows PAC", "") },
 164
 165     { "password-file",  0,   arg_string, &password_file,
 166       NP_("read the password from a file", "") },
 167
 168     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 169       NP_("canonicalize client principal", "") },
 170
 171     { "enterprise",0,   arg_flag, &enterprise_flag,
 172       NP_("parse principal as a KRB5-NT-ENTERPRISE name", "") },
 173 #ifdef PKINIT
 174     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 175       NP_("use enterprise name from certificate", "") },
 176
 177     { "pk-user",        'C',    arg_string,     &pk_user_id,
 178       NP_("principal's public/private/certificate identifier", ""), "id" },
 179
 180     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 181       NP_("directory with CA certificates", ""), "directory" },
 182
 183     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 184       NP_("Use RSA encrypted reply (instead of DH)", "") },
 185 #endif
 186 #ifndef NO_NTLM
 187     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 188       NP_("NTLM domain", ""), "domain" },
 189 #endif
 190
 191     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 192       NP_("switch the default cache to the new credentials cache", "") },
 193
 194     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 195       NP_("honor ok-as-delegate on tickets", "") },
 196
 197     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 198       NP_("only use referrals, no dns canalisation", "") },
 199
 200     { "windows",        0,  arg_flag, &windows_flag,
 201       NP_("get windows behavior", "") },
 202
 203     { "version",        0,   arg_flag, &version_flag },
 204     { "help",           0,   arg_flag, &help_flag }
 205 };
 206
 207 static void
 208 usage (int ret)
 209 {
 210     arg_printusage_i18n (args,
 211                          sizeof(args)/sizeof(*args),
 212                          N_("Usage: ", ""),
 213                          NULL,
 214                          "[principal [command]]",
 215                          getarg_i18n);
 216     exit (ret);
 217 }
 218
 219 static krb5_error_code
 220 get_server(krb5_context context,
 221            krb5_principal client,
 222            const char *server,
 223            krb5_principal *princ)
 224 {
 225     krb5_const_realm realm;
 226     if(server)
 227         return krb5_parse_name(context, server, princ);
 228
 229     realm = krb5_principal_get_realm(context, client);
 230     return krb5_make_principal(context, princ, realm,
 231                                KRB5_TGS_NAME, realm, NULL);
 232 }
 233
 234 #ifndef HEIMDAL_SMALLER
 235
 236 static krb5_error_code
 237 do_524init(krb5_context context, krb5_ccache ccache,
 238            krb5_creds *creds, const char *server)
 239 {
 240     krb5_error_code ret;
 241
 242     struct credentials c;
 243     krb5_creds in_creds, *real_creds;
 244
 245     if(creds != NULL)
 246         real_creds = creds;
 247     else {
 248         krb5_principal client;
 249         krb5_cc_get_principal(context, ccache, &client);
 250         memset(&in_creds, 0, sizeof(in_creds));
 251         ret = get_server(context, client, server, &in_creds.server);
 252         if(ret) {
 253             krb5_free_principal(context, client);
 254             return ret;
 255         }
 256         in_creds.client = client;
 257         ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
 258         krb5_free_principal(context, client);
 259         krb5_free_principal(context, in_creds.server);
 260         if(ret)
 261             return ret;
 262     }
 263     ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
 264     if(ret)
 265         krb5_warn(context, ret, "converting creds");
 266     else {
 267         krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
 268         if(tret)
 269             krb5_warn(context, tret, "saving v4 creds");
 270     }
 271
 272     if(creds == NULL)
 273         krb5_free_creds(context, real_creds);
 274     memset(&c, 0, sizeof(c));
 275
 276     return ret;
 277 }
 278
 279 #endif
 280
 281 static int
 282 renew_validate(krb5_context context,
 283                int renew,
 284                int validate,
 285                krb5_ccache cache,
 286                const char *server,
 287                krb5_deltat life)
 288 {
 289     krb5_error_code ret;
 290     krb5_creds in, *out = NULL;
 291     krb5_kdc_flags flags;
 292
 293     memset(&in, 0, sizeof(in));
 294
 295     ret = krb5_cc_get_principal(context, cache, &in.client);
 296     if(ret) {
 297         krb5_warn(context, ret, "krb5_cc_get_principal");
 298         return ret;
 299     }
 300     ret = get_server(context, in.client, server, &in.server);
 301     if(ret) {
 302         krb5_warn(context, ret, "get_server");
 303         goto out;
 304     }
 305
 306     if (renew) {
 307         /*
 308          * no need to check the error here, it's only to be
 309          * friendly to the user
 310          */
 311         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 312     }
 313
 314     flags.i = 0;
 315     flags.b.renewable         = flags.b.renew = renew;
 316     flags.b.validate          = validate;
 317
 318     if (forwardable_flag != -1)
 319         flags.b.forwardable       = forwardable_flag;
 320     else if (out)
 321         flags.b.forwardable       = out->flags.b.forwardable;
 322
 323     if (proxiable_flag != -1)
 324         flags.b.proxiable         = proxiable_flag;
 325     else if (out)
 326         flags.b.proxiable         = out->flags.b.proxiable;
 327
 328     if (anonymous_flag)
 329         flags.b.request_anonymous = anonymous_flag;
 330     if(life)
 331         in.times.endtime = time(NULL) + life;
 332
 333     if (out) {
 334         krb5_free_creds (context, out);
 335         out = NULL;
 336     }
 337
 338
 339     ret = krb5_get_kdc_cred(context,
 340                             cache,
 341                             flags,
 342                             NULL,
 343                             NULL,
 344                             &in,
 345                             &out);
 346     if(ret) {
 347         krb5_warn(context, ret, "krb5_get_kdc_cred");
 348         goto out;
 349     }
 350     ret = krb5_cc_initialize(context, cache, in.client);
 351     if(ret) {
 352         krb5_free_creds (context, out);
 353         krb5_warn(context, ret, "krb5_cc_initialize");
 354         goto out;
 355     }
 356     ret = krb5_cc_store_cred(context, cache, out);
 357
 358     if(ret == 0 && server == NULL) {
 359         /* only do this if it's a general renew-my-tgt request */
 360 #ifndef HEIMDAL_SMALLER
 361         if(get_v4_tgt)
 362             do_524init(context, cache, out, NULL);
 363 #endif
 364 #ifndef NO_AFS
 365         if(do_afslog && k_hasafs())
 366             krb5_afslog(context, cache, NULL, NULL);
 367 #endif
 368     }
 369
 370     krb5_free_creds (context, out);
 371     if(ret) {
 372         krb5_warn(context, ret, "krb5_cc_store_cred");
 373         goto out;
 374     }
 375 out:
 376     krb5_free_cred_contents(context, &in);
 377     return ret;
 378 }
 379
 380 #ifndef NO_NTLM
 381
 382 static krb5_error_code
 383 store_ntlmkey(krb5_context context, krb5_ccache id,
 384               const char *domain, struct ntlm_buf *buf)
 385 {
 386     krb5_error_code ret;
 387     krb5_data data;
 388     char *name;
 389
 390     asprintf(&name, "ntlm-key-%s", domain);
 391     if (name == NULL) {
 392         krb5_clear_error_message(context);
 393         return ENOMEM;
 394     }
 395
 396     data.length = buf->length;
 397     data.data = buf->data;
 398
 399     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 400     free(name);
 401     return ret;
 402 }
 403 #endif
 404
 405 static krb5_error_code
 406 get_new_tickets(krb5_context context,
 407                 krb5_principal principal,
 408                 krb5_ccache ccache,
 409                 krb5_deltat ticket_life,
 410                 int interactive)
 411 {
 412     krb5_error_code ret;
 413     krb5_get_init_creds_opt *opt;
 414     krb5_creds cred;
 415     char passwd[256];
 416     krb5_deltat start_time = 0;
 417     krb5_deltat renew = 0;
 418     char *renewstr = NULL;
 419     krb5_enctype *enctype = NULL;
 420     krb5_ccache tempccache;
 421 #ifndef NO_NTLM
 422     struct ntlm_buf ntlmkey;
 423     memset(&ntlmkey, 0, sizeof(ntlmkey));
 424 #endif
 425     passwd[0] = '\0';
 426
 427     if (password_file) {
 428         FILE *f;
 429
 430         if (strcasecmp("STDIN", password_file) == 0)
 431             f = stdin;
 432         else
 433             f = fopen(password_file, "r");
 434         if (f == NULL)
 435             krb5_errx(context, 1, "Failed to open the password file %s",
 436                       password_file);
 437
 438         if (fgets(passwd, sizeof(passwd), f) == NULL)
 439             krb5_errx(context, 1,
 440                       N_("Failed to read password from file %s", ""),
 441                       password_file);
 442         if (f != stdin)
 443             fclose(f);
 444         passwd[strcspn(passwd, "\n")] = '\0';
 445     }
 446
 447
 448     memset(&cred, 0, sizeof(cred));
 449
 450     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 451     if (ret)
 452         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 453
 454     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 455         krb5_principal_get_realm(context, principal), opt);
 456
 457     if(forwardable_flag != -1)
 458         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 459     if(proxiable_flag != -1)
 460         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 461     if(anonymous_flag)
 462         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 463     if (pac_flag != -1)
 464         krb5_get_init_creds_opt_set_pac_request(context, opt,
 465                                                 pac_flag ? TRUE : FALSE);
 466     if (canonicalize_flag)
 467         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 468     if (pk_enterprise_flag && windows_flag)
 469         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 470     if (pk_user_id || anonymous_flag) {
 471         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 472                                                  principal,
 473                                                  pk_user_id,
 474                                                  pk_x509_anchors,
 475                                                  NULL,
 476                                                  NULL,
 477                                                  pk_use_enckey ? 2 : 0 |
 478                                                  anonymous_flag ? 4 : 0,
 479                                                  krb5_prompter_posix,
 480                                                  NULL,
 481                                                  passwd);
 482         if (ret)
 483             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 484     }
 485
 486     if (addrs_flag != -1)
 487         krb5_get_init_creds_opt_set_addressless(context, opt,
 488                                                 addrs_flag ? FALSE : TRUE);
 489
 490     if (renew_life == NULL && renewable_flag)
 491         renewstr = "1 month";
 492     if (renew_life)
 493         renewstr = renew_life;
 494     if (renewstr) {
 495         renew = parse_time (renewstr, "s");
 496         if (renew < 0)
 497             errx (1, "unparsable time: %s", renewstr);
 498
 499         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 500     }
 501
 502     if(ticket_life != 0)
 503         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 504
 505     if(start_str) {
 506         int tmp = parse_time (start_str, "s");
 507         if (tmp < 0)
 508             errx (1, N_("unparsable time: %s", ""), start_str);
 509
 510         start_time = tmp;
 511     }
 512
 513     if(etype_str.num_strings) {
 514         int i;
 515
 516         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 517         if(enctype == NULL)
 518             errx(1, "out of memory");
 519         for(i = 0; i < etype_str.num_strings; i++) {
 520             ret = krb5_string_to_enctype(context,
 521                                          etype_str.strings[i],
 522                                          &enctype[i]);
 523             if(ret)
 524                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 525         }
 526         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 527                                                etype_str.num_strings);
 528     }
 529
 530     if(use_keytab || keytab_str) {
 531         krb5_keytab kt;
 532         if(keytab_str)
 533             ret = krb5_kt_resolve(context, keytab_str, &kt);
 534         else
 535             ret = krb5_kt_default(context, &kt);
 536         if (ret)
 537             krb5_err (context, 1, ret, "resolving keytab");
 538         ret = krb5_get_init_creds_keytab (context,
 539                                           &cred,
 540                                           principal,
 541                                           kt,
 542                                           start_time,
 543                                           server_str,
 544                                           opt);
 545         krb5_kt_close(context, kt);
 546     } else if (pk_user_id || anonymous_flag) {
 547         ret = krb5_get_init_creds_password (context,
 548                                             &cred,
 549                                             principal,
 550                                             passwd,
 551                                             krb5_prompter_posix,
 552                                             NULL,
 553                                             start_time,
 554                                             server_str,
 555                                             opt);
 556     } else if (!interactive) {
 557         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 558         krb5_get_init_creds_opt_free(context, opt);
 559         return 0;
 560     } else {
 561
 562         if (passwd[0] == '\0') {
 563             char *p, *prompt;
 564
 565             krb5_unparse_name (context, principal, &p);
 566             asprintf (&prompt, N_("%s's Password: ", ""), p);
 567             free (p);
 568
 569             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 570                 memset(passwd, 0, sizeof(passwd));
 571                 exit(1);
 572             }
 573             free (prompt);
 574         }
 575
 576
 577         ret = krb5_get_init_creds_password (context,
 578                                             &cred,
 579                                             principal,
 580                                             passwd,
 581                                             krb5_prompter_posix,
 582                                             NULL,
 583                                             start_time,
 584                                             server_str,
 585                                             opt);
 586     }
 587     krb5_get_init_creds_opt_free(context, opt);
 588 #ifndef NO_NTLM
 589     if (ntlm_domain && passwd[0])
 590         heim_ntlm_nt_key(passwd, &ntlmkey);
 591 #endif
 592     memset(passwd, 0, sizeof(passwd));
 593
 594     switch(ret){
 595     case 0:
 596         break;
 597     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 598         exit(1);
 599     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 600     case KRB5KRB_AP_ERR_MODIFIED:
 601     case KRB5KDC_ERR_PREAUTH_FAILED:
 602         krb5_errx(context, 1, N_("Password incorrect", ""));
 603         break;
 604     case KRB5KRB_AP_ERR_V4_REPLY:
 605         krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
 606         break;
 607     default:
 608         krb5_err(context, 1, ret, "krb5_get_init_creds");
 609     }
 610
 611     if(ticket_life != 0) {
 612         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 613             char life[64];
 614             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 615                                 life, sizeof(life));
 616             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 617         }
 618     }
 619     if(renew_life) {
 620         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 621             char life[64];
 622             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 623                                 life, sizeof(life));
 624             krb5_warnx(context,
 625                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 626                        life);
 627         }
 628     }
 629
 630     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 631                              NULL, &tempccache);
 632     if (ret)
 633         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 634
 635     ret = krb5_cc_initialize (context, tempccache, cred.client);
 636     if (ret)
 637         krb5_err (context, 1, ret, "krb5_cc_initialize");
 638
 639     ret = krb5_cc_store_cred (context, tempccache, &cred);
 640     if (ret)
 641         krb5_err (context, 1, ret, "krb5_cc_store_cred");
 642
 643     krb5_free_cred_contents (context, &cred);
 644
 645     ret = krb5_cc_move(context, tempccache, ccache);
 646     if (ret)
 647         krb5_err (context, 1, ret, "krb5_cc_move");
 648
 649     if (switch_cache_flags)
 650         krb5_cc_switch(context, ccache);
 651
 652 #ifndef NO_NTLM
 653     if (ntlm_domain && ntlmkey.data)
 654         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 655 #endif
 656
 657     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 658         unsigned char d = 0;
 659         krb5_data data;
 660
 661         if (ok_as_delegate_flag || windows_flag)
 662             d |= 1;
 663         if (use_referrals_flag || windows_flag)
 664             d |= 2;
 665
 666         data.length = 1;
 667         data.data = &d;
 668
 669         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 670     }
 671
 672
 673     if (enctype)
 674         free(enctype);
 675
 676     return 0;
 677 }
 678
 679 static time_t
 680 ticket_lifetime(krb5_context context, krb5_ccache cache,
 681                 krb5_principal client, const char *server)
 682 {
 683     krb5_creds in_cred, *cred;
 684     krb5_error_code ret;
 685     time_t timeout;
 686
 687     memset(&in_cred, 0, sizeof(in_cred));
 688
 689     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 690     if(ret) {
 691         krb5_warn(context, ret, "krb5_cc_get_principal");
 692         return 0;
 693     }
 694     ret = get_server(context, in_cred.client, server, &in_cred.server);
 695     if(ret) {
 696         krb5_free_principal(context, in_cred.client);
 697         krb5_warn(context, ret, "get_server");
 698         return 0;
 699     }
 700
 701     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 702                                cache, &in_cred, &cred);
 703     krb5_free_principal(context, in_cred.client);
 704     krb5_free_principal(context, in_cred.server);
 705     if(ret) {
 706         krb5_warn(context, ret, "krb5_get_credentials");
 707         return 0;
 708     }
 709     timeout = cred->times.endtime - cred->times.starttime;
 710     if (timeout < 0)
 711         timeout = 0;
 712     krb5_free_creds(context, cred);
 713     return timeout;
 714 }
 715
 716 struct renew_ctx {
 717     krb5_context context;
 718     krb5_ccache  ccache;
 719     krb5_principal principal;
 720     krb5_deltat ticket_life;
 721 };
 722
 723 static time_t
 724 renew_func(void *ptr)
 725 {
 726     struct renew_ctx *ctx = ptr;
 727     krb5_error_code ret;
 728     time_t expire;
 729     int new_tickets = 0;
 730
 731     if (renewable_flag) {
 732         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 733                              ctx->ccache, server_str, ctx->ticket_life);
 734         if (ret)
 735             new_tickets = 1;
 736     } else
 737         new_tickets = 1;
 738
 739     if (new_tickets)
 740         get_new_tickets(ctx->context, ctx->principal,
 741                         ctx->ccache, ctx->ticket_life, 0);
 742
 743 #ifndef HEIMDAL_SMALLER
 744     if(get_v4_tgt || convert_524)
 745         do_524init(ctx->context, ctx->ccache, NULL, server_str);
 746 #endif
 747 #ifndef NO_AFS
 748     if(do_afslog && k_hasafs())
 749         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 750 #endif
 751
 752     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 753                              server_str) / 2;
 754     return expire + 1;
 755 }
 756
 757 int
 758 main (int argc, char **argv)
 759 {
 760     krb5_error_code ret;
 761     krb5_context context;
 762     krb5_ccache  ccache;
 763     krb5_principal principal;
 764     int optidx = 0;
 765     krb5_deltat ticket_life = 0;
 766     int parseflags = 0;
 767
 768     setprogname (argv[0]);
 769
 770     setlocale (LC_ALL, "");
 771     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 772     textdomain("heimdal_kuser");
 773
 774     ret = krb5_init_context (&context);
 775     if (ret == KRB5_CONFIG_BADFORMAT)
 776         errx (1, "krb5_init_context failed to parse configuration file");
 777     else if (ret)
 778         errx(1, "krb5_init_context failed: %d", ret);
 779
 780     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 781         usage(1);
 782
 783     if (help_flag)
 784         usage (0);
 785
 786     if(version_flag) {
 787         print_version(NULL);
 788         exit(0);
 789     }
 790
 791     argc -= optidx;
 792     argv += optidx;
 793
 794     if (canonicalize_flag || enterprise_flag)
 795         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 796
 797     if (pk_enterprise_flag) {
 798         ret = _krb5_pk_enterprise_cert(context, pk_user_id,
 799                                        argv[0], &principal);
 800         if (ret)
 801             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
 802
 803     } else if (anonymous_flag) {
 804
 805         ret = krb5_make_principal(context, &principal, argv[0],
 806                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
 807                                   NULL);
 808         if (ret)
 809             krb5_err(context, 1, ret, "krb5_build_principal");
 810         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
 811
 812     } else {
 813         if (argv[0]) {
 814             ret = krb5_parse_name_flags (context, argv[0], parseflags,
 815                                          &principal);
 816             if (ret)
 817                 krb5_err (context, 1, ret, "krb5_parse_name");
 818         } else {
 819             ret = krb5_get_default_principal (context, &principal);
 820             if (ret)
 821                 krb5_err (context, 1, ret, "krb5_get_default_principal");
 822         }
 823     }
 824
 825     if(fcache_version)
 826         krb5_set_fcache_version(context, fcache_version);
 827
 828     if(renewable_flag == -1)
 829         /* this seems somewhat pointless, but whatever */
 830         krb5_appdefault_boolean(context, "kinit",
 831                                 krb5_principal_get_realm(context, principal),
 832                                 "renewable", FALSE, &renewable_flag);
 833 #ifndef HEIMDAL_SMALLER
 834     if(get_v4_tgt == -1)
 835         krb5_appdefault_boolean(context, "kinit",
 836                                 krb5_principal_get_realm(context, principal),
 837                                 "krb4_get_tickets", FALSE, &get_v4_tgt);
 838 #endif
 839     if(do_afslog == -1)
 840         krb5_appdefault_boolean(context, "kinit",
 841                                 krb5_principal_get_realm(context, principal),
 842                                 "afslog", TRUE, &do_afslog);
 843
 844     if(cred_cache)
 845         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 846     else {
 847         if(argc > 1) {
 848             char s[1024];
 849             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
 850             if(ret)
 851                 krb5_err(context, 1, ret, "creating cred cache");
 852             snprintf(s, sizeof(s), "%s:%s",
 853                      krb5_cc_get_type(context, ccache),
 854                      krb5_cc_get_name(context, ccache));
 855             setenv("KRB5CCNAME", s, 1);
 856 #ifndef HEIMDAL_SMALLER
 857             if (get_v4_tgt) {
 858                 int fd;
 859                 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
 860                     krb5_errx(context, 1, "out of memory");
 861                 if((fd = mkstemp(krb4_cc_name)) >= 0) {
 862                     close(fd);
 863                     setenv("KRBTKFILE", krb4_cc_name, 1);
 864                 } else {
 865                     free(krb4_cc_name);
 866                     krb4_cc_name = NULL;
 867                 }
 868             }
 869 #endif
 870         } else {
 871             ret = krb5_cc_cache_match(context, principal, &ccache);
 872             if (ret)
 873                 ret = krb5_cc_default (context, &ccache);
 874         }
 875     }
 876     if (ret)
 877         krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 878
 879 #ifndef NO_AFS
 880     if(argc > 1 && k_hasafs ())
 881         k_setpag();
 882 #endif
 883
 884     if (lifetime) {
 885         int tmp = parse_time (lifetime, "s");
 886         if (tmp < 0)
 887             errx (1, N_("unparsable time: %s", ""), lifetime);
 888
 889         ticket_life = tmp;
 890     }
 891
 892     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 893         krb5_errx(context, 1,
 894                   N_("specifying both extra addresses and "
 895                      "no addresses makes no sense", ""));
 896     {
 897         int i;
 898         krb5_addresses addresses;
 899         memset(&addresses, 0, sizeof(addresses));
 900         for(i = 0; i < extra_addresses.num_strings; i++) {
 901             ret = krb5_parse_address(context, extra_addresses.strings[i],
 902                                      &addresses);
 903             if (ret == 0) {
 904                 krb5_add_extra_addresses(context, &addresses);
 905                 krb5_free_addresses(context, &addresses);
 906             }
 907         }
 908         free_getarg_strings(&extra_addresses);
 909     }
 910
 911     if(renew_flag || validate_flag) {
 912         ret = renew_validate(context, renew_flag, validate_flag,
 913                              ccache, server_str, ticket_life);
 914         exit(ret != 0);
 915     }
 916
 917 #ifndef HEIMDAL_SMALLER
 918     if(!convert_524)
 919 #endif
 920         get_new_tickets(context, principal, ccache, ticket_life, 1);
 921
 922 #ifndef HEIMDAL_SMALLER
 923     if(get_v4_tgt || convert_524)
 924         do_524init(context, ccache, NULL, server_str);
 925 #endif
 926 #ifndef NO_AFS
 927     if(do_afslog && k_hasafs())
 928         krb5_afslog(context, ccache, NULL, NULL);
 929 #endif
 930     if(argc > 1) {
 931         struct renew_ctx ctx;
 932         time_t timeout;
 933
 934         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 935
 936         ctx.context = context;
 937         ctx.ccache = ccache;
 938         ctx.principal = principal;
 939         ctx.ticket_life = ticket_life;
 940
 941         ret = simple_execvp_timed(argv[1], argv+1,
 942                                   renew_func, &ctx, timeout);
 943 #define EX_NOEXEC       126
 944 #define EX_NOTFOUND     127
 945         if(ret == EX_NOEXEC)
 946             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
 947         else if(ret == EX_NOTFOUND)
 948             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
 949
 950         krb5_cc_destroy(context, ccache);
 951 #ifndef HEIMDAL_SMALLER
 952         _krb5_krb_dest_tkt(context, krb4_cc_name);
 953 #endif
 954 #ifndef NO_AFS
 955         if(k_hasafs())
 956             k_unlog();
 957 #endif
 958     } else {
 959         krb5_cc_close (context, ccache);
 960         ret = 0;
 961     }
 962     krb5_free_principal(context, principal);
 963     krb5_free_context (context);
 964     return ret;
 965 }