crypto/external/bsd/heimdal/dist/kuser/kinit.c

   1 /*      $NetBSD: kinit.c,v 1.1.1.2 2014/04/24 12:45:28 pettai Exp $     */
   2
   3 /*
   4  * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * 3. Neither the name of the Institute nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #include "kuser_locl.h"
  39
  40 #ifdef __APPLE__
  41 #include <Security/Security.h>
  42 #endif
  43
  44 #ifndef NO_NTLM
  45 #include <krb5/heimntlm.h>
  46 #endif
  47
  48 int forwardable_flag    = -1;
  49 int proxiable_flag      = -1;
  50 int renewable_flag      = -1;
  51 int renew_flag          = 0;
  52 int pac_flag            = -1;
  53 int validate_flag       = 0;
  54 int version_flag        = 0;
  55 int help_flag           = 0;
  56 int addrs_flag          = -1;
  57 struct getarg_strings extra_addresses;
  58 int anonymous_flag      = 0;
  59 char *lifetime          = NULL;
  60 char *renew_life        = NULL;
  61 char *server_str        = NULL;
  62 char *cred_cache        = NULL;
  63 char *start_str         = NULL;
  64 static int switch_cache_flags = 1;
  65 struct getarg_strings etype_str;
  66 int use_keytab          = 0;
  67 char *keytab_str        = NULL;
  68 int do_afslog           = -1;
  69 int fcache_version;
  70 char *password_file     = NULL;
  71 char *pk_user_id        = NULL;
  72 int pk_enterprise_flag = 0;
  73 struct hx509_certs_data *ent_user_id = NULL;
  74 char *pk_x509_anchors   = NULL;
  75 int pk_use_enckey       = 0;
  76 static int canonicalize_flag = 0;
  77 static int enterprise_flag = 0;
  78 static int ok_as_delegate_flag = 0;
  79 static int use_referrals_flag = 0;
  80 static int windows_flag = 0;
  81 #ifndef NO_NTLM
  82 static char *ntlm_domain;
  83 #endif
  84
  85
  86 static struct getargs args[] = {
  87     /*
  88      * used by MIT
  89      * a: ~A
  90      * V: verbose
  91      * F: ~f
  92      * P: ~p
  93      * C: v4 cache name?
  94      * 5:
  95      *
  96      * old flags
  97      * 4:
  98      * 9:
  99      */
 100     { "afslog",         0  , arg_flag, &do_afslog,
 101       NP_("obtain afs tokens", ""), NULL },
 102
 103     { "cache",          'c', arg_string, &cred_cache,
 104       NP_("credentials cache", ""), "cachename" },
 105
 106     { "forwardable",    0, arg_negative_flag, &forwardable_flag,
 107       NP_("get tickets not forwardable", ""), NULL },
 108
 109     { NULL,             'f', arg_flag, &forwardable_flag,
 110       NP_("get forwardable tickets", ""), NULL },
 111
 112     { "keytab",         't', arg_string, &keytab_str,
 113       NP_("keytab to use", ""), "keytabname" },
 114
 115     { "lifetime",       'l', arg_string, &lifetime,
 116       NP_("lifetime of tickets", ""), "time" },
 117
 118     { "proxiable",      'p', arg_flag, &proxiable_flag,
 119       NP_("get proxiable tickets", ""), NULL },
 120
 121     { "renew",          'R', arg_flag, &renew_flag,
 122       NP_("renew TGT", ""), NULL },
 123
 124     { "renewable",      0,   arg_flag, &renewable_flag,
 125       NP_("get renewable tickets", ""), NULL },
 126
 127     { "renewable-life", 'r', arg_string, &renew_life,
 128       NP_("renewable lifetime of tickets", ""), "time" },
 129
 130     { "server",         'S', arg_string, &server_str,
 131       NP_("server to get ticket for", ""), "principal" },
 132
 133     { "start-time",     's', arg_string, &start_str,
 134       NP_("when ticket gets valid", ""), "time" },
 135
 136     { "use-keytab",     'k', arg_flag, &use_keytab,
 137       NP_("get key from keytab", ""), NULL },
 138
 139     { "validate",       'v', arg_flag, &validate_flag,
 140       NP_("validate TGT", ""), NULL },
 141
 142     { "enctypes",       'e', arg_strings, &etype_str,
 143       NP_("encryption types to use", ""), "enctypes" },
 144
 145     { "fcache-version", 0,   arg_integer, &fcache_version,
 146       NP_("file cache version to create", ""), NULL },
 147
 148     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 149       NP_("request a ticket with no addresses", ""), NULL },
 150
 151     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 152       NP_("include these extra addresses", ""), "addresses" },
 153
 154     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 155       NP_("request an anonymous ticket", ""), NULL },
 156
 157     { "request-pac",    0,   arg_flag,  &pac_flag,
 158       NP_("request a Windows PAC", ""), NULL },
 159
 160     { "password-file",  0,   arg_string, &password_file,
 161       NP_("read the password from a file", ""), NULL },
 162
 163     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 164       NP_("canonicalize client principal", ""), NULL },
 165
 166     { "enterprise",0,   arg_flag, &enterprise_flag,
 167       NP_("parse principal as a KRB5-NT-ENTERPRISE name", ""), NULL },
 168 #ifdef PKINIT
 169     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 170       NP_("use enterprise name from certificate", ""), NULL },
 171
 172     { "pk-user",        'C',    arg_string,     &pk_user_id,
 173       NP_("principal's public/private/certificate identifier", ""), "id" },
 174
 175     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 176       NP_("directory with CA certificates", ""), "directory" },
 177
 178     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 179       NP_("Use RSA encrypted reply (instead of DH)", ""), NULL },
 180 #endif
 181 #ifndef NO_NTLM
 182     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 183       NP_("NTLM domain", ""), "domain" },
 184 #endif
 185
 186     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 187       NP_("switch the default cache to the new credentials cache", ""), NULL },
 188
 189     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 190       NP_("honor ok-as-delegate on tickets", ""), NULL },
 191
 192     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 193       NP_("only use referrals, no dns canalisation", ""), NULL },
 194
 195     { "windows",        0,  arg_flag, &windows_flag,
 196       NP_("get windows behavior", ""), NULL },
 197
 198     { "version",        0,   arg_flag, &version_flag, NULL, NULL },
 199     { "help",           0,   arg_flag, &help_flag, NULL, NULL }
 200 };
 201
 202 static void
 203 usage (int ret)
 204 {
 205     arg_printusage_i18n (args,
 206                          sizeof(args)/sizeof(*args),
 207                          N_("Usage: ", ""),
 208                          NULL,
 209                          "[principal [command]]",
 210                          getarg_i18n);
 211     exit (ret);
 212 }
 213
 214 static krb5_error_code
 215 get_server(krb5_context context,
 216            krb5_principal client,
 217            const char *server,
 218            krb5_principal *princ)
 219 {
 220     krb5_const_realm realm;
 221     if(server)
 222         return krb5_parse_name(context, server, princ);
 223
 224     realm = krb5_principal_get_realm(context, client);
 225     return krb5_make_principal(context, princ, realm,
 226                                KRB5_TGS_NAME, realm, NULL);
 227 }
 228
 229 static int
 230 renew_validate(krb5_context context,
 231                int renew,
 232                int validate,
 233                krb5_ccache cache,
 234                const char *server,
 235                krb5_deltat life)
 236 {
 237     krb5_error_code ret;
 238     krb5_creds in, *out = NULL;
 239     krb5_kdc_flags flags;
 240
 241     memset(&in, 0, sizeof(in));
 242
 243     ret = krb5_cc_get_principal(context, cache, &in.client);
 244     if(ret) {
 245         krb5_warn(context, ret, "krb5_cc_get_principal");
 246         return ret;
 247     }
 248     ret = get_server(context, in.client, server, &in.server);
 249     if(ret) {
 250         krb5_warn(context, ret, "get_server");
 251         goto out;
 252     }
 253
 254     if (renew) {
 255         /*
 256          * no need to check the error here, it's only to be
 257          * friendly to the user
 258          */
 259         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 260     }
 261
 262     flags.i = 0;
 263     flags.b.renewable         = flags.b.renew = renew;
 264     flags.b.validate          = validate;
 265
 266     if (forwardable_flag != -1)
 267         flags.b.forwardable       = forwardable_flag;
 268     else if (out)
 269         flags.b.forwardable       = out->flags.b.forwardable;
 270
 271     if (proxiable_flag != -1)
 272         flags.b.proxiable         = proxiable_flag;
 273     else if (out)
 274         flags.b.proxiable         = out->flags.b.proxiable;
 275
 276     if (anonymous_flag)
 277         flags.b.request_anonymous = anonymous_flag;
 278     if(life)
 279         in.times.endtime = time(NULL) + life;
 280
 281     if (out) {
 282         krb5_free_creds (context, out);
 283         out = NULL;
 284     }
 285
 286
 287     ret = krb5_get_kdc_cred(context,
 288                             cache,
 289                             flags,
 290                             NULL,
 291                             NULL,
 292                             &in,
 293                             &out);
 294     if(ret) {
 295         krb5_warn(context, ret, "krb5_get_kdc_cred");
 296         goto out;
 297     }
 298     ret = krb5_cc_initialize(context, cache, in.client);
 299     if(ret) {
 300         krb5_free_creds (context, out);
 301         krb5_warn(context, ret, "krb5_cc_initialize");
 302         goto out;
 303     }
 304     ret = krb5_cc_store_cred(context, cache, out);
 305
 306     if(ret == 0 && server == NULL) {
 307         /* only do this if it's a general renew-my-tgt request */
 308 #ifndef NO_AFS
 309         if(do_afslog && k_hasafs())
 310             krb5_afslog(context, cache, NULL, NULL);
 311 #endif
 312     }
 313
 314     krb5_free_creds (context, out);
 315     if(ret) {
 316         krb5_warn(context, ret, "krb5_cc_store_cred");
 317         goto out;
 318     }
 319 out:
 320     krb5_free_cred_contents(context, &in);
 321     return ret;
 322 }
 323
 324 #ifndef NO_NTLM
 325
 326 static krb5_error_code
 327 store_ntlmkey(krb5_context context, krb5_ccache id,
 328               const char *domain, struct ntlm_buf *buf)
 329 {
 330     krb5_error_code ret;
 331     krb5_data data;
 332     char *name;
 333
 334     asprintf(&name, "ntlm-key-%s", domain);
 335     if (name == NULL) {
 336         krb5_clear_error_message(context);
 337         return ENOMEM;
 338     }
 339
 340     data.length = buf->length;
 341     data.data = buf->data;
 342
 343     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 344     free(name);
 345     return ret;
 346 }
 347 #endif
 348
 349 static krb5_error_code
 350 get_new_tickets(krb5_context context,
 351                 krb5_principal principal,
 352                 krb5_ccache ccache,
 353                 krb5_deltat ticket_life,
 354                 int interactive)
 355 {
 356     krb5_error_code ret;
 357     krb5_get_init_creds_opt *opt;
 358     krb5_creds cred;
 359     char passwd[256];
 360     krb5_deltat start_time = 0;
 361     krb5_deltat renew = 0;
 362     const char *renewstr = NULL;
 363     krb5_enctype *enctype = NULL;
 364     krb5_ccache tempccache;
 365 #ifndef NO_NTLM
 366     struct ntlm_buf ntlmkey;
 367     memset(&ntlmkey, 0, sizeof(ntlmkey));
 368 #endif
 369     passwd[0] = '\0';
 370
 371     if (password_file) {
 372         FILE *f;
 373
 374         if (strcasecmp("STDIN", password_file) == 0)
 375             f = stdin;
 376         else
 377             f = fopen(password_file, "r");
 378         if (f == NULL)
 379             krb5_errx(context, 1, "Failed to open the password file %s",
 380                       password_file);
 381
 382         if (fgets(passwd, sizeof(passwd), f) == NULL)
 383             krb5_errx(context, 1,
 384                       N_("Failed to read password from file %s", ""),
 385                       password_file);
 386         if (f != stdin)
 387             fclose(f);
 388         passwd[strcspn(passwd, "\n")] = '\0';
 389     }
 390
 391 #ifdef __APPLE__
 392     if (passwd[0] == '\0') {
 393         const char *realm;
 394         OSStatus osret;
 395         UInt32 length;
 396         void *buffer;
 397         char *name;
 398
 399         realm = krb5_principal_get_realm(context, principal);
 400
 401         ret = krb5_unparse_name_flags(context, principal,
 402                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &name);
 403         if (ret)
 404             goto nopassword;
 405
 406         osret = SecKeychainFindGenericPassword(NULL, strlen(realm), realm,
 407                                                strlen(name), name,
 408                                                &length, &buffer, NULL);
 409         free(name);
 410         if (osret == noErr && length < sizeof(passwd) - 1) {
 411             memcpy(passwd, buffer, length);
 412             passwd[length] = '\0';
 413         }
 414     nopassword:
 415         do { } while(0);
 416     }
 417 #endif
 418
 419     memset(&cred, 0, sizeof(cred));
 420
 421     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 422     if (ret)
 423         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 424
 425     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 426         krb5_principal_get_realm(context, principal), opt);
 427
 428     if(forwardable_flag != -1)
 429         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 430     if(proxiable_flag != -1)
 431         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 432     if(anonymous_flag)
 433         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 434     if (pac_flag != -1)
 435         krb5_get_init_creds_opt_set_pac_request(context, opt,
 436                                                 pac_flag ? TRUE : FALSE);
 437     if (canonicalize_flag)
 438         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 439     if (pk_enterprise_flag || enterprise_flag || canonicalize_flag || windows_flag)
 440         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 441     if (pk_user_id || ent_user_id || anonymous_flag) {
 442         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 443                                                  principal,
 444                                                  pk_user_id,
 445                                                  pk_x509_anchors,
 446                                                  NULL,
 447                                                  NULL,
 448                                                  pk_use_enckey ? 2 : 0 |
 449                                                  anonymous_flag ? 4 : 0,
 450                                                  krb5_prompter_posix,
 451                                                  NULL,
 452                                                  passwd);
 453         if (ret)
 454             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 455         if (ent_user_id)
 456             krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
 457     }
 458
 459     if (addrs_flag != -1)
 460         krb5_get_init_creds_opt_set_addressless(context, opt,
 461                                                 addrs_flag ? FALSE : TRUE);
 462
 463     if (renew_life == NULL && renewable_flag)
 464         renewstr = "1 month";
 465     if (renew_life)
 466         renewstr = renew_life;
 467     if (renewstr) {
 468         renew = parse_time (renewstr, "s");
 469         if (renew < 0)
 470             errx (1, "unparsable time: %s", renewstr);
 471
 472         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 473     }
 474
 475     if(ticket_life != 0)
 476         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 477
 478     if(start_str) {
 479         int tmp = parse_time (start_str, "s");
 480         if (tmp < 0)
 481             errx (1, N_("unparsable time: %s", ""), start_str);
 482
 483         start_time = tmp;
 484     }
 485
 486     if(etype_str.num_strings) {
 487         int i;
 488
 489         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 490         if(enctype == NULL)
 491             errx(1, "out of memory");
 492         for(i = 0; i < etype_str.num_strings; i++) {
 493             ret = krb5_string_to_enctype(context,
 494                                          etype_str.strings[i],
 495                                          &enctype[i]);
 496             if(ret)
 497                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 498         }
 499         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 500                                                etype_str.num_strings);
 501     }
 502
 503     if(use_keytab || keytab_str) {
 504         krb5_keytab kt;
 505         if(keytab_str)
 506             ret = krb5_kt_resolve(context, keytab_str, &kt);
 507         else
 508             ret = krb5_kt_default(context, &kt);
 509         if (ret)
 510             krb5_err (context, 1, ret, "resolving keytab");
 511         ret = krb5_get_init_creds_keytab (context,
 512                                           &cred,
 513                                           principal,
 514                                           kt,
 515                                           start_time,
 516                                           server_str,
 517                                           opt);
 518         krb5_kt_close(context, kt);
 519     } else if (pk_user_id || ent_user_id || anonymous_flag) {
 520         ret = krb5_get_init_creds_password (context,
 521                                             &cred,
 522                                             principal,
 523                                             passwd,
 524                                             krb5_prompter_posix,
 525                                             NULL,
 526                                             start_time,
 527                                             server_str,
 528                                             opt);
 529     } else if (!interactive) {
 530         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 531         krb5_get_init_creds_opt_free(context, opt);
 532         return 0;
 533     } else {
 534
 535         if (passwd[0] == '\0') {
 536             char *p, *prompt;
 537
 538             krb5_unparse_name (context, principal, &p);
 539             asprintf (&prompt, N_("%s's Password: ", ""), p);
 540             free (p);
 541
 542             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 543                 memset(passwd, 0, sizeof(passwd));
 544                 exit(1);
 545             }
 546             free (prompt);
 547         }
 548
 549
 550         ret = krb5_get_init_creds_password (context,
 551                                             &cred,
 552                                             principal,
 553                                             passwd,
 554                                             krb5_prompter_posix,
 555                                             NULL,
 556                                             start_time,
 557                                             server_str,
 558                                             opt);
 559     }
 560     krb5_get_init_creds_opt_free(context, opt);
 561 #ifndef NO_NTLM
 562     if (ntlm_domain && passwd[0])
 563         heim_ntlm_nt_key(passwd, &ntlmkey);
 564 #endif
 565     memset(passwd, 0, sizeof(passwd));
 566
 567     switch(ret){
 568     case 0:
 569         break;
 570     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 571         exit(1);
 572     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 573     case KRB5KRB_AP_ERR_MODIFIED:
 574     case KRB5KDC_ERR_PREAUTH_FAILED:
 575         krb5_errx(context, 1, N_("Password incorrect", ""));
 576         break;
 577     case KRB5KRB_AP_ERR_V4_REPLY:
 578         krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
 579         break;
 580     default:
 581         krb5_err(context, 1, ret, "krb5_get_init_creds");
 582     }
 583
 584     if(ticket_life != 0) {
 585         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 586             char life[64];
 587             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 588                                 life, sizeof(life));
 589             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 590         }
 591     }
 592     if(renew_life) {
 593         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 594             char life[64];
 595             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 596                                 life, sizeof(life));
 597             krb5_warnx(context,
 598                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 599                        life);
 600         }
 601     }
 602
 603     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 604                              NULL, &tempccache);
 605     if (ret)
 606         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 607
 608     ret = krb5_cc_initialize (context, tempccache, cred.client);
 609     if (ret)
 610         krb5_err (context, 1, ret, "krb5_cc_initialize");
 611
 612     ret = krb5_cc_store_cred (context, tempccache, &cred);
 613     if (ret)
 614         krb5_err (context, 1, ret, "krb5_cc_store_cred");
 615
 616     krb5_free_cred_contents (context, &cred);
 617
 618     ret = krb5_cc_move(context, tempccache, ccache);
 619     if (ret)
 620         krb5_err (context, 1, ret, "krb5_cc_move");
 621
 622     if (switch_cache_flags)
 623         krb5_cc_switch(context, ccache);
 624
 625 #ifndef NO_NTLM
 626     if (ntlm_domain && ntlmkey.data)
 627         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 628 #endif
 629
 630     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 631         unsigned char d = 0;
 632         krb5_data data;
 633
 634         if (ok_as_delegate_flag || windows_flag)
 635             d |= 1;
 636         if (use_referrals_flag || windows_flag)
 637             d |= 2;
 638
 639         data.length = 1;
 640         data.data = &d;
 641
 642         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 643     }
 644
 645
 646     if (enctype)
 647         free(enctype);
 648
 649     return 0;
 650 }
 651
 652 static time_t
 653 ticket_lifetime(krb5_context context, krb5_ccache cache,
 654                 krb5_principal client, const char *server)
 655 {
 656     krb5_creds in_cred, *cred;
 657     krb5_error_code ret;
 658     time_t timeout;
 659
 660     memset(&in_cred, 0, sizeof(in_cred));
 661
 662     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 663     if(ret) {
 664         krb5_warn(context, ret, "krb5_cc_get_principal");
 665         return 0;
 666     }
 667     ret = get_server(context, in_cred.client, server, &in_cred.server);
 668     if(ret) {
 669         krb5_free_principal(context, in_cred.client);
 670         krb5_warn(context, ret, "get_server");
 671         return 0;
 672     }
 673
 674     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 675                                cache, &in_cred, &cred);
 676     krb5_free_principal(context, in_cred.client);
 677     krb5_free_principal(context, in_cred.server);
 678     if(ret) {
 679         krb5_warn(context, ret, "krb5_get_credentials");
 680         return 0;
 681     }
 682     timeout = cred->times.endtime - cred->times.starttime;
 683     if (timeout < 0)
 684         timeout = 0;
 685     krb5_free_creds(context, cred);
 686     return timeout;
 687 }
 688
 689 struct renew_ctx {
 690     krb5_context context;
 691     krb5_ccache  ccache;
 692     krb5_principal principal;
 693     krb5_deltat ticket_life;
 694 };
 695
 696 static time_t
 697 renew_func(void *ptr)
 698 {
 699     struct renew_ctx *ctx = ptr;
 700     krb5_error_code ret;
 701     time_t expire;
 702     int new_tickets = 0;
 703
 704     if (renewable_flag) {
 705         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 706                              ctx->ccache, server_str, ctx->ticket_life);
 707         if (ret)
 708             new_tickets = 1;
 709     } else
 710         new_tickets = 1;
 711
 712     if (new_tickets)
 713         get_new_tickets(ctx->context, ctx->principal,
 714                         ctx->ccache, ctx->ticket_life, 0);
 715
 716 #ifndef NO_AFS
 717     if(do_afslog && k_hasafs())
 718         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 719 #endif
 720
 721     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 722                              server_str) / 2;
 723     return expire + 1;
 724 }
 725
 726 int
 727 main (int argc, char **argv)
 728 {
 729     krb5_error_code ret;
 730     krb5_context context;
 731     krb5_ccache  ccache;
 732     krb5_principal principal;
 733     int optidx = 0;
 734     krb5_deltat ticket_life = 0;
 735     int parseflags = 0;
 736
 737     setprogname (argv[0]);
 738
 739     setlocale (LC_ALL, "");
 740     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 741     textdomain("heimdal_kuser");
 742
 743     ret = krb5_init_context (&context);
 744     if (ret == KRB5_CONFIG_BADFORMAT)
 745         errx (1, "krb5_init_context failed to parse configuration file");
 746     else if (ret)
 747         errx(1, "krb5_init_context failed: %d", ret);
 748
 749     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 750         usage(1);
 751
 752     if (help_flag)
 753         usage (0);
 754
 755     if(version_flag) {
 756         print_version(NULL);
 757         exit(0);
 758     }
 759
 760     argc -= optidx;
 761     argv += optidx;
 762
 763     if (canonicalize_flag || enterprise_flag)
 764         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 765
 766     if (pk_enterprise_flag) {
 767         ret = krb5_pk_enterprise_cert(context, pk_user_id,
 768                                       argv[0], &principal,
 769                                       &ent_user_id);
 770         if (ret)
 771             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
 772
 773         pk_user_id = NULL;
 774
 775     } else if (anonymous_flag) {
 776
 777         ret = krb5_make_principal(context, &principal, argv[0],
 778                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
 779                                   NULL);
 780         if (ret)
 781             krb5_err(context, 1, ret, "krb5_make_principal");
 782         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
 783
 784     } else {
 785         if (argv[0]) {
 786             ret = krb5_parse_name_flags (context, argv[0], parseflags,
 787                                          &principal);
 788             if (ret)
 789                 krb5_err (context, 1, ret, "krb5_parse_name");
 790         } else {
 791             ret = krb5_get_default_principal (context, &principal);
 792             if (ret)
 793                 krb5_err (context, 1, ret, "krb5_get_default_principal");
 794         }
 795     }
 796
 797     if(fcache_version)
 798         krb5_set_fcache_version(context, fcache_version);
 799
 800     if(renewable_flag == -1)
 801         /* this seems somewhat pointless, but whatever */
 802         krb5_appdefault_boolean(context, "kinit",
 803                                 krb5_principal_get_realm(context, principal),
 804                                 "renewable", FALSE, &renewable_flag);
 805     if(do_afslog == -1)
 806         krb5_appdefault_boolean(context, "kinit",
 807                                 krb5_principal_get_realm(context, principal),
 808                                 "afslog", TRUE, &do_afslog);
 809
 810     if(cred_cache)
 811         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 812     else {
 813         if(argc > 1) {
 814             char s[1024];
 815             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
 816             if(ret)
 817                 krb5_err(context, 1, ret, "creating cred cache");
 818             snprintf(s, sizeof(s), "%s:%s",
 819                      krb5_cc_get_type(context, ccache),
 820                      krb5_cc_get_name(context, ccache));
 821             setenv("KRB5CCNAME", s, 1);
 822         } else {
 823             ret = krb5_cc_cache_match(context, principal, &ccache);
 824             if (ret) {
 825                 const char *type;
 826                 ret = krb5_cc_default (context, &ccache);
 827                 if (ret)
 828                     krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 829
 830                 /*
 831                  * Check if the type support switching, and we do,
 832                  * then do that instead over overwriting the current
 833                  * default credential
 834                  */
 835                 type = krb5_cc_get_type(context, ccache);
 836                 if (krb5_cc_support_switch(context, type)) {
 837                     krb5_cc_close(context, ccache);
 838                     ret = krb5_cc_new_unique(context, type, NULL, &ccache);
 839                 }
 840             }
 841         }
 842     }
 843     if (ret)
 844         krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 845
 846 #ifndef NO_AFS
 847     if(argc > 1 && k_hasafs ())
 848         k_setpag();
 849 #endif
 850
 851     if (lifetime) {
 852         int tmp = parse_time (lifetime, "s");
 853         if (tmp < 0)
 854             errx (1, N_("unparsable time: %s", ""), lifetime);
 855
 856         ticket_life = tmp;
 857     }
 858
 859     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 860         krb5_errx(context, 1,
 861                   N_("specifying both extra addresses and "
 862                      "no addresses makes no sense", ""));
 863     {
 864         int i;
 865         krb5_addresses addresses;
 866         memset(&addresses, 0, sizeof(addresses));
 867         for(i = 0; i < extra_addresses.num_strings; i++) {
 868             ret = krb5_parse_address(context, extra_addresses.strings[i],
 869                                      &addresses);
 870             if (ret == 0) {
 871                 krb5_add_extra_addresses(context, &addresses);
 872                 krb5_free_addresses(context, &addresses);
 873             }
 874         }
 875         free_getarg_strings(&extra_addresses);
 876     }
 877
 878     if(renew_flag || validate_flag) {
 879         ret = renew_validate(context, renew_flag, validate_flag,
 880                              ccache, server_str, ticket_life);
 881         exit(ret != 0);
 882     }
 883
 884     get_new_tickets(context, principal, ccache, ticket_life, 1);
 885
 886 #ifndef NO_AFS
 887     if(do_afslog && k_hasafs())
 888         krb5_afslog(context, ccache, NULL, NULL);
 889 #endif
 890     if(argc > 1) {
 891         struct renew_ctx ctx;
 892         time_t timeout;
 893
 894         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 895
 896         ctx.context = context;
 897         ctx.ccache = ccache;
 898         ctx.principal = principal;
 899         ctx.ticket_life = ticket_life;
 900
 901         ret = simple_execvp_timed(argv[1], argv+1,
 902                                   renew_func, &ctx, timeout);
 903 #define EX_NOEXEC       126
 904 #define EX_NOTFOUND     127
 905         if(ret == EX_NOEXEC)
 906             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
 907         else if(ret == EX_NOTFOUND)
 908             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
 909
 910         krb5_cc_destroy(context, ccache);
 911 #ifndef NO_AFS
 912         if(k_hasafs())
 913             k_unlog();
 914 #endif
 915     } else {
 916         krb5_cc_close (context, ccache);
 917         ret = 0;
 918     }
 919     krb5_free_principal(context, principal);
 920     krb5_free_context (context);
 921     return ret;
 922 }