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 struct hx509_certs_data;
  44 #include <krb5-private.h>
  45
  46 #ifndef NO_NTLM
  47 #include "heimntlm.h"
  48 #endif
  49
  50 int forwardable_flag    = -1;
  51 int proxiable_flag      = -1;
  52 int renewable_flag      = -1;
  53 int renew_flag          = 0;
  54 int pac_flag            = -1;
  55 int validate_flag       = 0;
  56 int version_flag        = 0;
  57 int help_flag           = 0;
  58 int addrs_flag          = -1;
  59 struct getarg_strings extra_addresses;
  60 int anonymous_flag      = 0;
  61 char *lifetime          = NULL;
  62 char *renew_life        = NULL;
  63 char *server_str        = NULL;
  64 char *cred_cache        = NULL;
  65 char *start_str         = NULL;
  66 static int switch_cache_flags = 1;
  67 struct getarg_strings etype_str;
  68 int use_keytab          = 0;
  69 char *keytab_str        = NULL;
  70 int do_afslog           = -1;
  71 #ifndef HEIMDAL_SMALLER
  72 int get_v4_tgt          = -1;
  73 int convert_524         = 0;
  74 static char *krb4_cc_name;
  75 #endif
  76 int fcache_version;
  77 char *password_file     = NULL;
  78 char *pk_user_id        = NULL;
  79 int pk_enterprise_flag = 0;
  80 struct hx509_certs_data *ent_user_id = NULL;
  81 char *pk_x509_anchors   = NULL;
  82 int pk_use_enckey       = 0;
  83 static int canonicalize_flag = 0;
  84 static int enterprise_flag = 0;
  85 static int ok_as_delegate_flag = 0;
  86 static int use_referrals_flag = 0;
  87 static int windows_flag = 0;
  88 #ifndef NO_NTLM
  89 static char *ntlm_domain;
  90 #endif
  91
  92
  93 static struct getargs args[] = {
  94     /*
  95      * used by MIT
  96      * a: ~A
  97      * V: verbose
  98      * F: ~f
  99      * P: ~p
 100      * C: v4 cache name?
 101      * 5:
 102      */
 103 #ifndef HEIMDAL_SMALLER
 104     { "524init",        '4', arg_flag, &get_v4_tgt,
 105       NP_("obtain version 4 TGT", "") },
 106
 107     { "524convert",     '9', arg_flag, &convert_524,
 108       NP_("only convert ticket to version 4", "") },
 109 #endif
 110     { "afslog",         0  , arg_flag, &do_afslog,
 111       NP_("obtain afs tokens", "")  },
 112
 113     { "cache",          'c', arg_string, &cred_cache,
 114       NP_("credentials cache", ""), "cachename" },
 115
 116     { "forwardable",    'f', arg_flag, &forwardable_flag,
 117       NP_("get forwardable tickets", "")},
 118
 119     { "keytab",         't', arg_string, &keytab_str,
 120       NP_("keytab to use", ""), "keytabname" },
 121
 122     { "lifetime",       'l', arg_string, &lifetime,
 123       NP_("lifetime of tickets", ""), "time"},
 124
 125     { "proxiable",      'p', arg_flag, &proxiable_flag,
 126       NP_("get proxiable tickets", "") },
 127
 128     { "renew",          'R', arg_flag, &renew_flag,
 129       NP_("renew TGT", "") },
 130
 131     { "renewable",      0,   arg_flag, &renewable_flag,
 132       NP_("get renewable tickets", "") },
 133
 134     { "renewable-life", 'r', arg_string, &renew_life,
 135       NP_("renewable lifetime of tickets", ""), "time" },
 136
 137     { "server",         'S', arg_string, &server_str,
 138       NP_("server to get ticket for", ""), "principal" },
 139
 140     { "start-time",     's', arg_string, &start_str,
 141       NP_("when ticket gets valid", ""), "time" },
 142
 143     { "use-keytab",     'k', arg_flag, &use_keytab,
 144       NP_("get key from keytab", "") },
 145
 146     { "validate",       'v', arg_flag, &validate_flag,
 147       NP_("validate TGT", "") },
 148
 149     { "enctypes",       'e', arg_strings, &etype_str,
 150       NP_("encryption types to use", ""), "enctypes" },
 151
 152     { "fcache-version", 0,   arg_integer, &fcache_version,
 153       NP_("file cache version to create", "") },
 154
 155     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 156       NP_("request a ticket with no addresses", "") },
 157
 158     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 159       NP_("include these extra addresses", ""), "addresses" },
 160
 161     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 162       NP_("request an anonymous ticket", "") },
 163
 164     { "request-pac",    0,   arg_flag,  &pac_flag,
 165       NP_("request a Windows PAC", "") },
 166
 167     { "password-file",  0,   arg_string, &password_file,
 168       NP_("read the password from a file", "") },
 169
 170     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 171       NP_("canonicalize client principal", "") },
 172
 173     { "enterprise",0,   arg_flag, &enterprise_flag,
 174       NP_("parse principal as a KRB5-NT-ENTERPRISE name", "") },
 175 #ifdef PKINIT
 176     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 177       NP_("use enterprise name from certificate", "") },
 178
 179     { "pk-user",        'C',    arg_string,     &pk_user_id,
 180       NP_("principal's public/private/certificate identifier", ""), "id" },
 181
 182     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 183       NP_("directory with CA certificates", ""), "directory" },
 184
 185     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 186       NP_("Use RSA encrypted reply (instead of DH)", "") },
 187 #endif
 188 #ifndef NO_NTLM
 189     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 190       NP_("NTLM domain", ""), "domain" },
 191 #endif
 192
 193     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 194       NP_("switch the default cache to the new credentials cache", "") },
 195
 196     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 197       NP_("honor ok-as-delegate on tickets", "") },
 198
 199     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 200       NP_("only use referrals, no dns canalisation", "") },
 201
 202     { "windows",        0,  arg_flag, &windows_flag,
 203       NP_("get windows behavior", "") },
 204
 205     { "version",        0,   arg_flag, &version_flag },
 206     { "help",           0,   arg_flag, &help_flag }
 207 };
 208
 209 static void
 210 usage (int ret)
 211 {
 212     arg_printusage_i18n (args,
 213                          sizeof(args)/sizeof(*args),
 214                          N_("Usage: ", ""),
 215                          NULL,
 216                          "[principal [command]]",
 217                          getarg_i18n);
 218     exit (ret);
 219 }
 220
 221 static krb5_error_code
 222 get_server(krb5_context context,
 223            krb5_principal client,
 224            const char *server,
 225            krb5_principal *princ)
 226 {
 227     krb5_const_realm realm;
 228     if(server)
 229         return krb5_parse_name(context, server, princ);
 230
 231     realm = krb5_principal_get_realm(context, client);
 232     return krb5_make_principal(context, princ, realm,
 233                                KRB5_TGS_NAME, realm, NULL);
 234 }
 235
 236 #ifndef HEIMDAL_SMALLER
 237
 238 static krb5_error_code
 239 do_524init(krb5_context context, krb5_ccache ccache,
 240            krb5_creds *creds, const char *server)
 241 {
 242     krb5_error_code ret;
 243
 244     struct credentials c;
 245     krb5_creds in_creds, *real_creds;
 246
 247     if(creds != NULL)
 248         real_creds = creds;
 249     else {
 250         krb5_principal client;
 251         krb5_cc_get_principal(context, ccache, &client);
 252         memset(&in_creds, 0, sizeof(in_creds));
 253         ret = get_server(context, client, server, &in_creds.server);
 254         if(ret) {
 255             krb5_free_principal(context, client);
 256             return ret;
 257         }
 258         in_creds.client = client;
 259         ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
 260         krb5_free_principal(context, client);
 261         krb5_free_principal(context, in_creds.server);
 262         if(ret)
 263             return ret;
 264     }
 265     ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
 266     if(ret)
 267         krb5_warn(context, ret, "converting creds");
 268     else {
 269         krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
 270         if(tret)
 271             krb5_warn(context, tret, "saving v4 creds");
 272     }
 273
 274     if(creds == NULL)
 275         krb5_free_creds(context, real_creds);
 276     memset(&c, 0, sizeof(c));
 277
 278     return ret;
 279 }
 280
 281 #endif
 282
 283 static int
 284 renew_validate(krb5_context context,
 285                int renew,
 286                int validate,
 287                krb5_ccache cache,
 288                const char *server,
 289                krb5_deltat life)
 290 {
 291     krb5_error_code ret;
 292     krb5_creds in, *out = NULL;
 293     krb5_kdc_flags flags;
 294
 295     memset(&in, 0, sizeof(in));
 296
 297     ret = krb5_cc_get_principal(context, cache, &in.client);
 298     if(ret) {
 299         krb5_warn(context, ret, "krb5_cc_get_principal");
 300         return ret;
 301     }
 302     ret = get_server(context, in.client, server, &in.server);
 303     if(ret) {
 304         krb5_warn(context, ret, "get_server");
 305         goto out;
 306     }
 307
 308     if (renew) {
 309         /*
 310          * no need to check the error here, it's only to be
 311          * friendly to the user
 312          */
 313         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 314     }
 315
 316     flags.i = 0;
 317     flags.b.renewable         = flags.b.renew = renew;
 318     flags.b.validate          = validate;
 319
 320     if (forwardable_flag != -1)
 321         flags.b.forwardable       = forwardable_flag;
 322     else if (out)
 323         flags.b.forwardable       = out->flags.b.forwardable;
 324
 325     if (proxiable_flag != -1)
 326         flags.b.proxiable         = proxiable_flag;
 327     else if (out)
 328         flags.b.proxiable         = out->flags.b.proxiable;
 329
 330     if (anonymous_flag)
 331         flags.b.request_anonymous = anonymous_flag;
 332     if(life)
 333         in.times.endtime = time(NULL) + life;
 334
 335     if (out) {
 336         krb5_free_creds (context, out);
 337         out = NULL;
 338     }
 339
 340
 341     ret = krb5_get_kdc_cred(context,
 342                             cache,
 343                             flags,
 344                             NULL,
 345                             NULL,
 346                             &in,
 347                             &out);
 348     if(ret) {
 349         krb5_warn(context, ret, "krb5_get_kdc_cred");
 350         goto out;
 351     }
 352     ret = krb5_cc_initialize(context, cache, in.client);
 353     if(ret) {
 354         krb5_free_creds (context, out);
 355         krb5_warn(context, ret, "krb5_cc_initialize");
 356         goto out;
 357     }
 358     ret = krb5_cc_store_cred(context, cache, out);
 359
 360     if(ret == 0 && server == NULL) {
 361         /* only do this if it's a general renew-my-tgt request */
 362 #ifndef HEIMDAL_SMALLER
 363         if(get_v4_tgt)
 364             do_524init(context, cache, out, NULL);
 365 #endif
 366 #ifndef NO_AFS
 367         if(do_afslog && k_hasafs())
 368             krb5_afslog(context, cache, NULL, NULL);
 369 #endif
 370     }
 371
 372     krb5_free_creds (context, out);
 373     if(ret) {
 374         krb5_warn(context, ret, "krb5_cc_store_cred");
 375         goto out;
 376     }
 377 out:
 378     krb5_free_cred_contents(context, &in);
 379     return ret;
 380 }
 381
 382 #ifndef NO_NTLM
 383
 384 static krb5_error_code
 385 store_ntlmkey(krb5_context context, krb5_ccache id,
 386               const char *domain, struct ntlm_buf *buf)
 387 {
 388     krb5_error_code ret;
 389     krb5_data data;
 390     char *name;
 391
 392     asprintf(&name, "ntlm-key-%s", domain);
 393     if (name == NULL) {
 394         krb5_clear_error_message(context);
 395         return ENOMEM;
 396     }
 397
 398     data.length = buf->length;
 399     data.data = buf->data;
 400
 401     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 402     free(name);
 403     return ret;
 404 }
 405 #endif
 406
 407 static krb5_error_code
 408 get_new_tickets(krb5_context context,
 409                 krb5_principal principal,
 410                 krb5_ccache ccache,
 411                 krb5_deltat ticket_life,
 412                 int interactive)
 413 {
 414     krb5_error_code ret;
 415     krb5_get_init_creds_opt *opt;
 416     krb5_creds cred;
 417     char passwd[256];
 418     krb5_deltat start_time = 0;
 419     krb5_deltat renew = 0;
 420     const char *renewstr = NULL;
 421     krb5_enctype *enctype = NULL;
 422     krb5_ccache tempccache;
 423 #ifndef NO_NTLM
 424     struct ntlm_buf ntlmkey;
 425     memset(&ntlmkey, 0, sizeof(ntlmkey));
 426 #endif
 427     passwd[0] = '\0';
 428
 429     if (password_file) {
 430         FILE *f;
 431
 432         if (strcasecmp("STDIN", password_file) == 0)
 433             f = stdin;
 434         else
 435             f = fopen(password_file, "r");
 436         if (f == NULL)
 437             krb5_errx(context, 1, "Failed to open the password file %s",
 438                       password_file);
 439
 440         if (fgets(passwd, sizeof(passwd), f) == NULL)
 441             krb5_errx(context, 1,
 442                       N_("Failed to read password from file %s", ""),
 443                       password_file);
 444         if (f != stdin)
 445             fclose(f);
 446         passwd[strcspn(passwd, "\n")] = '\0';
 447     }
 448
 449
 450     memset(&cred, 0, sizeof(cred));
 451
 452     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 453     if (ret)
 454         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 455
 456     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 457         krb5_principal_get_realm(context, principal), opt);
 458
 459     if(forwardable_flag != -1)
 460         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 461     if(proxiable_flag != -1)
 462         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 463     if(anonymous_flag)
 464         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 465     if (pac_flag != -1)
 466         krb5_get_init_creds_opt_set_pac_request(context, opt,
 467                                                 pac_flag ? TRUE : FALSE);
 468     if (canonicalize_flag)
 469         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 470     if (pk_enterprise_flag && windows_flag)
 471         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 472     if (pk_user_id || ent_user_id || anonymous_flag) {
 473         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 474                                                  principal,
 475                                                  pk_user_id,
 476                                                  pk_x509_anchors,
 477                                                  NULL,
 478                                                  NULL,
 479                                                  pk_use_enckey ? 2 : 0 |
 480                                                  anonymous_flag ? 4 : 0,
 481                                                  krb5_prompter_posix,
 482                                                  NULL,
 483                                                  passwd);
 484         if (ret)
 485             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 486         if (ent_user_id)
 487             _krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
 488     }
 489
 490     if (addrs_flag != -1)
 491         krb5_get_init_creds_opt_set_addressless(context, opt,
 492                                                 addrs_flag ? FALSE : TRUE);
 493
 494     if (renew_life == NULL && renewable_flag)
 495         renewstr = "1 month";
 496     if (renew_life)
 497         renewstr = renew_life;
 498     if (renewstr) {
 499         renew = parse_time (renewstr, "s");
 500         if (renew < 0)
 501             errx (1, "unparsable time: %s", renewstr);
 502
 503         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 504     }
 505
 506     if(ticket_life != 0)
 507         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 508
 509     if(start_str) {
 510         int tmp = parse_time (start_str, "s");
 511         if (tmp < 0)
 512             errx (1, N_("unparsable time: %s", ""), start_str);
 513
 514         start_time = tmp;
 515     }
 516
 517     if(etype_str.num_strings) {
 518         int i;
 519
 520         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 521         if(enctype == NULL)
 522             errx(1, "out of memory");
 523         for(i = 0; i < etype_str.num_strings; i++) {
 524             ret = krb5_string_to_enctype(context,
 525                                          etype_str.strings[i],
 526                                          &enctype[i]);
 527             if(ret)
 528                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 529         }
 530         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 531                                                etype_str.num_strings);
 532     }
 533
 534     if(use_keytab || keytab_str) {
 535         krb5_keytab kt;
 536         if(keytab_str)
 537             ret = krb5_kt_resolve(context, keytab_str, &kt);
 538         else
 539             ret = krb5_kt_default(context, &kt);
 540         if (ret)
 541             krb5_err (context, 1, ret, "resolving keytab");
 542         ret = krb5_get_init_creds_keytab (context,
 543                                           &cred,
 544                                           principal,
 545                                           kt,
 546                                           start_time,
 547                                           server_str,
 548                                           opt);
 549         krb5_kt_close(context, kt);
 550     } else if (pk_user_id || ent_user_id || anonymous_flag) {
 551         ret = krb5_get_init_creds_password (context,
 552                                             &cred,
 553                                             principal,
 554                                             passwd,
 555                                             krb5_prompter_posix,
 556                                             NULL,
 557                                             start_time,
 558                                             server_str,
 559                                             opt);
 560     } else if (!interactive) {
 561         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 562         krb5_get_init_creds_opt_free(context, opt);
 563         return 0;
 564     } else {
 565
 566         if (passwd[0] == '\0') {
 567             char *p, *prompt;
 568
 569             krb5_unparse_name (context, principal, &p);
 570             asprintf (&prompt, N_("%s's Password: ", ""), p);
 571             free (p);
 572
 573             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 574                 memset(passwd, 0, sizeof(passwd));
 575                 exit(1);
 576             }
 577             free (prompt);
 578         }
 579
 580
 581         ret = krb5_get_init_creds_password (context,
 582                                             &cred,
 583                                             principal,
 584                                             passwd,
 585                                             krb5_prompter_posix,
 586                                             NULL,
 587                                             start_time,
 588                                             server_str,
 589                                             opt);
 590     }
 591     krb5_get_init_creds_opt_free(context, opt);
 592 #ifndef NO_NTLM
 593     if (ntlm_domain && passwd[0])
 594         heim_ntlm_nt_key(passwd, &ntlmkey);
 595 #endif
 596     memset(passwd, 0, sizeof(passwd));
 597
 598     switch(ret){
 599     case 0:
 600         break;
 601     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 602         exit(1);
 603     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 604     case KRB5KRB_AP_ERR_MODIFIED:
 605     case KRB5KDC_ERR_PREAUTH_FAILED:
 606         krb5_errx(context, 1, N_("Password incorrect", ""));
 607         break;
 608     case KRB5KRB_AP_ERR_V4_REPLY:
 609         krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
 610         break;
 611     default:
 612         krb5_err(context, 1, ret, "krb5_get_init_creds");
 613     }
 614
 615     if(ticket_life != 0) {
 616         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 617             char life[64];
 618             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 619                                 life, sizeof(life));
 620             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 621         }
 622     }
 623     if(renew_life) {
 624         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 625             char life[64];
 626             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 627                                 life, sizeof(life));
 628             krb5_warnx(context,
 629                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 630                        life);
 631         }
 632     }
 633
 634     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 635                              NULL, &tempccache);
 636     if (ret)
 637         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 638
 639     ret = krb5_cc_initialize (context, tempccache, cred.client);
 640     if (ret)
 641         krb5_err (context, 1, ret, "krb5_cc_initialize");
 642
 643     ret = krb5_cc_store_cred (context, tempccache, &cred);
 644     if (ret)
 645         krb5_err (context, 1, ret, "krb5_cc_store_cred");
 646
 647     krb5_free_cred_contents (context, &cred);
 648
 649     ret = krb5_cc_move(context, tempccache, ccache);
 650     if (ret)
 651         krb5_err (context, 1, ret, "krb5_cc_move");
 652
 653     if (switch_cache_flags)
 654         krb5_cc_switch(context, ccache);
 655
 656 #ifndef NO_NTLM
 657     if (ntlm_domain && ntlmkey.data)
 658         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 659 #endif
 660
 661     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 662         unsigned char d = 0;
 663         krb5_data data;
 664
 665         if (ok_as_delegate_flag || windows_flag)
 666             d |= 1;
 667         if (use_referrals_flag || windows_flag)
 668             d |= 2;
 669
 670         data.length = 1;
 671         data.data = &d;
 672
 673         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 674     }
 675
 676
 677     if (enctype)
 678         free(enctype);
 679
 680     return 0;
 681 }
 682
 683 static time_t
 684 ticket_lifetime(krb5_context context, krb5_ccache cache,
 685                 krb5_principal client, const char *server)
 686 {
 687     krb5_creds in_cred, *cred;
 688     krb5_error_code ret;
 689     time_t timeout;
 690
 691     memset(&in_cred, 0, sizeof(in_cred));
 692
 693     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 694     if(ret) {
 695         krb5_warn(context, ret, "krb5_cc_get_principal");
 696         return 0;
 697     }
 698     ret = get_server(context, in_cred.client, server, &in_cred.server);
 699     if(ret) {
 700         krb5_free_principal(context, in_cred.client);
 701         krb5_warn(context, ret, "get_server");
 702         return 0;
 703     }
 704
 705     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 706                                cache, &in_cred, &cred);
 707     krb5_free_principal(context, in_cred.client);
 708     krb5_free_principal(context, in_cred.server);
 709     if(ret) {
 710         krb5_warn(context, ret, "krb5_get_credentials");
 711         return 0;
 712     }
 713     timeout = cred->times.endtime - cred->times.starttime;
 714     if (timeout < 0)
 715         timeout = 0;
 716     krb5_free_creds(context, cred);
 717     return timeout;
 718 }
 719
 720 struct renew_ctx {
 721     krb5_context context;
 722     krb5_ccache  ccache;
 723     krb5_principal principal;
 724     krb5_deltat ticket_life;
 725 };
 726
 727 static time_t
 728 renew_func(void *ptr)
 729 {
 730     struct renew_ctx *ctx = ptr;
 731     krb5_error_code ret;
 732     time_t expire;
 733     int new_tickets = 0;
 734
 735     if (renewable_flag) {
 736         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 737                              ctx->ccache, server_str, ctx->ticket_life);
 738         if (ret)
 739             new_tickets = 1;
 740     } else
 741         new_tickets = 1;
 742
 743     if (new_tickets)
 744         get_new_tickets(ctx->context, ctx->principal,
 745                         ctx->ccache, ctx->ticket_life, 0);
 746
 747 #ifndef HEIMDAL_SMALLER
 748     if(get_v4_tgt || convert_524)
 749         do_524init(ctx->context, ctx->ccache, NULL, server_str);
 750 #endif
 751 #ifndef NO_AFS
 752     if(do_afslog && k_hasafs())
 753         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 754 #endif
 755
 756     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 757                              server_str) / 2;
 758     return expire + 1;
 759 }
 760
 761 int
 762 main (int argc, char **argv)
 763 {
 764     krb5_error_code ret;
 765     krb5_context context;
 766     krb5_ccache  ccache;
 767     krb5_principal principal;
 768     int optidx = 0;
 769     krb5_deltat ticket_life = 0;
 770     int parseflags = 0;
 771
 772     setprogname (argv[0]);
 773
 774     setlocale (LC_ALL, "");
 775     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 776     textdomain("heimdal_kuser");
 777
 778     ret = krb5_init_context (&context);
 779     if (ret == KRB5_CONFIG_BADFORMAT)
 780         errx (1, "krb5_init_context failed to parse configuration file");
 781     else if (ret)
 782         errx(1, "krb5_init_context failed: %d", ret);
 783
 784     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 785         usage(1);
 786
 787     if (help_flag)
 788         usage (0);
 789
 790     if(version_flag) {
 791         print_version(NULL);
 792         exit(0);
 793     }
 794
 795     argc -= optidx;
 796     argv += optidx;
 797
 798     if (canonicalize_flag || enterprise_flag)
 799         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 800
 801     if (pk_enterprise_flag) {
 802         ret = _krb5_pk_enterprise_cert(context, pk_user_id,
 803                                        argv[0], &principal,
 804                                        &ent_user_id);
 805         if (ret)
 806             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
 807
 808         pk_user_id = NULL;
 809
 810     } else if (anonymous_flag) {
 811
 812         ret = krb5_make_principal(context, &principal, argv[0],
 813                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
 814                                   NULL);
 815         if (ret)
 816             krb5_err(context, 1, ret, "krb5_make_principal");
 817         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
 818
 819     } else {
 820         if (argv[0]) {
 821             ret = krb5_parse_name_flags (context, argv[0], parseflags,
 822                                          &principal);
 823             if (ret)
 824                 krb5_err (context, 1, ret, "krb5_parse_name");
 825         } else {
 826             ret = krb5_get_default_principal (context, &principal);
 827             if (ret)
 828                 krb5_err (context, 1, ret, "krb5_get_default_principal");
 829         }
 830     }
 831
 832     if(fcache_version)
 833         krb5_set_fcache_version(context, fcache_version);
 834
 835     if(renewable_flag == -1)
 836         /* this seems somewhat pointless, but whatever */
 837         krb5_appdefault_boolean(context, "kinit",
 838                                 krb5_principal_get_realm(context, principal),
 839                                 "renewable", FALSE, &renewable_flag);
 840 #ifndef HEIMDAL_SMALLER
 841     if(get_v4_tgt == -1)
 842         krb5_appdefault_boolean(context, "kinit",
 843                                 krb5_principal_get_realm(context, principal),
 844                                 "krb4_get_tickets", FALSE, &get_v4_tgt);
 845 #endif
 846     if(do_afslog == -1)
 847         krb5_appdefault_boolean(context, "kinit",
 848                                 krb5_principal_get_realm(context, principal),
 849                                 "afslog", TRUE, &do_afslog);
 850
 851     if(cred_cache)
 852         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 853     else {
 854         if(argc > 1) {
 855             char s[1024];
 856             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
 857             if(ret)
 858                 krb5_err(context, 1, ret, "creating cred cache");
 859             snprintf(s, sizeof(s), "%s:%s",
 860                      krb5_cc_get_type(context, ccache),
 861                      krb5_cc_get_name(context, ccache));
 862             setenv("KRB5CCNAME", s, 1);
 863 #ifndef HEIMDAL_SMALLER
 864             if (get_v4_tgt) {
 865                 int fd;
 866                 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
 867                     krb5_errx(context, 1, "out of memory");
 868                 if((fd = mkstemp(krb4_cc_name)) >= 0) {
 869                     close(fd);
 870                     setenv("KRBTKFILE", krb4_cc_name, 1);
 871                 } else {
 872                     free(krb4_cc_name);
 873                     krb4_cc_name = NULL;
 874                 }
 875             }
 876 #endif
 877         } else {
 878             ret = krb5_cc_cache_match(context, principal, &ccache);
 879             if (ret)
 880                 ret = krb5_cc_default (context, &ccache);
 881         }
 882     }
 883     if (ret)
 884         krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 885
 886 #ifndef NO_AFS
 887     if(argc > 1 && k_hasafs ())
 888         k_setpag();
 889 #endif
 890
 891     if (lifetime) {
 892         int tmp = parse_time (lifetime, "s");
 893         if (tmp < 0)
 894             errx (1, N_("unparsable time: %s", ""), lifetime);
 895
 896         ticket_life = tmp;
 897     }
 898
 899     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 900         krb5_errx(context, 1,
 901                   N_("specifying both extra addresses and "
 902                      "no addresses makes no sense", ""));
 903     {
 904         int i;
 905         krb5_addresses addresses;
 906         memset(&addresses, 0, sizeof(addresses));
 907         for(i = 0; i < extra_addresses.num_strings; i++) {
 908             ret = krb5_parse_address(context, extra_addresses.strings[i],
 909                                      &addresses);
 910             if (ret == 0) {
 911                 krb5_add_extra_addresses(context, &addresses);
 912                 krb5_free_addresses(context, &addresses);
 913             }
 914         }
 915         free_getarg_strings(&extra_addresses);
 916     }
 917
 918     if(renew_flag || validate_flag) {
 919         ret = renew_validate(context, renew_flag, validate_flag,
 920                              ccache, server_str, ticket_life);
 921         exit(ret != 0);
 922     }
 923
 924 #ifndef HEIMDAL_SMALLER
 925     if(!convert_524)
 926 #endif
 927         get_new_tickets(context, principal, ccache, ticket_life, 1);
 928
 929 #ifndef HEIMDAL_SMALLER
 930     if(get_v4_tgt || convert_524)
 931         do_524init(context, ccache, NULL, server_str);
 932 #endif
 933 #ifndef NO_AFS
 934     if(do_afslog && k_hasafs())
 935         krb5_afslog(context, ccache, NULL, NULL);
 936 #endif
 937     if(argc > 1) {
 938         struct renew_ctx ctx;
 939         time_t timeout;
 940
 941         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 942
 943         ctx.context = context;
 944         ctx.ccache = ccache;
 945         ctx.principal = principal;
 946         ctx.ticket_life = ticket_life;
 947
 948         ret = simple_execvp_timed(argv[1], argv+1,
 949                                   renew_func, &ctx, timeout);
 950 #define EX_NOEXEC       126
 951 #define EX_NOTFOUND     127
 952         if(ret == EX_NOEXEC)
 953             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
 954         else if(ret == EX_NOTFOUND)
 955             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
 956
 957         krb5_cc_destroy(context, ccache);
 958 #ifndef HEIMDAL_SMALLER
 959         _krb5_krb_dest_tkt(context, krb4_cc_name);
 960 #endif
 961 #ifndef NO_AFS
 962         if(k_hasafs())
 963             k_unlog();
 964 #endif
 965     } else {
 966         krb5_cc_close (context, ccache);
 967         ret = 0;
 968     }
 969     krb5_free_principal(context, principal);
 970     krb5_free_context (context);
 971     return ret;
 972 }