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  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "kuser_locl.h"
  37
  38 #ifdef __APPLE__
  39 #include <Security/Security.h>
  40 #endif
  41
  42 #ifndef NO_NTLM
  43 #include "heimntlm.h"
  44 #endif
  45
  46 int forwardable_flag    = -1;
  47 int proxiable_flag      = -1;
  48 int renewable_flag      = -1;
  49 int renew_flag          = 0;
  50 int pac_flag            = -1;
  51 int validate_flag       = 0;
  52 int version_flag        = 0;
  53 int help_flag           = 0;
  54 int addrs_flag          = -1;
  55 struct getarg_strings extra_addresses;
  56 int anonymous_flag      = 0;
  57 char *lifetime          = NULL;
  58 char *renew_life        = NULL;
  59 char *server_str        = NULL;
  60 char *cred_cache        = NULL;
  61 char *start_str         = NULL;
  62 static int switch_cache_flags = 1;
  63 struct getarg_strings etype_str;
  64 int use_keytab          = 0;
  65 char *keytab_str        = NULL;
  66 int do_afslog           = -1;
  67 int fcache_version;
  68 char *password_file     = NULL;
  69 char *pk_user_id        = NULL;
  70 int pk_enterprise_flag = 0;
  71 struct hx509_certs_data *ent_user_id = NULL;
  72 char *pk_x509_anchors   = NULL;
  73 int pk_use_enckey       = 0;
  74 static int canonicalize_flag = 0;
  75 static int enterprise_flag = 0;
  76 static int ok_as_delegate_flag = 0;
  77 static char *fast_armor_cache_string = NULL;
  78 static int use_referrals_flag = 0;
  79 static int windows_flag = 0;
  80 #ifndef NO_NTLM
  81 static char *ntlm_domain;
  82 #endif
  83
  84
  85 static struct getargs args[] = {
  86     /*
  87      * used by MIT
  88      * a: ~A
  89      * V: verbose
  90      * F: ~f
  91      * P: ~p
  92      * C: v4 cache name?
  93      * 5:
  94      *
  95      * old flags
  96      * 4:
  97      * 9:
  98      */
  99     { "afslog",         0  , arg_flag, &do_afslog,
 100       NP_("obtain afs tokens", ""), NULL },
 101
 102     { "cache",          'c', arg_string, &cred_cache,
 103       NP_("credentials cache", ""), "cachename" },
 104
 105     { "forwardable",    0, arg_negative_flag, &forwardable_flag,
 106       NP_("get tickets not forwardable", ""), NULL },
 107
 108     { NULL,             'f', arg_flag, &forwardable_flag,
 109       NP_("get forwardable tickets", ""), NULL },
 110
 111     { "keytab",         't', arg_string, &keytab_str,
 112       NP_("keytab to use", ""), "keytabname" },
 113
 114     { "lifetime",       'l', arg_string, &lifetime,
 115       NP_("lifetime of tickets", ""), "time" },
 116
 117     { "proxiable",      'p', arg_flag, &proxiable_flag,
 118       NP_("get proxiable tickets", ""), NULL },
 119
 120     { "renew",          'R', arg_flag, &renew_flag,
 121       NP_("renew TGT", ""), NULL },
 122
 123     { "renewable",      0,   arg_flag, &renewable_flag,
 124       NP_("get renewable tickets", ""), NULL },
 125
 126     { "renewable-life", 'r', arg_string, &renew_life,
 127       NP_("renewable lifetime of tickets", ""), "time" },
 128
 129     { "server",         'S', arg_string, &server_str,
 130       NP_("server to get ticket for", ""), "principal" },
 131
 132     { "start-time",     's', arg_string, &start_str,
 133       NP_("when ticket gets valid", ""), "time" },
 134
 135     { "use-keytab",     'k', arg_flag, &use_keytab,
 136       NP_("get key from keytab", ""), NULL },
 137
 138     { "validate",       'v', arg_flag, &validate_flag,
 139       NP_("validate TGT", ""), NULL },
 140
 141     { "enctypes",       'e', arg_strings, &etype_str,
 142       NP_("encryption types to use", ""), "enctypes" },
 143
 144     { "fcache-version", 0,   arg_integer, &fcache_version,
 145       NP_("file cache version to create", ""), NULL },
 146
 147     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 148       NP_("request a ticket with no addresses", ""), NULL },
 149
 150     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 151       NP_("include these extra addresses", ""), "addresses" },
 152
 153     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 154       NP_("request an anonymous ticket", ""), NULL },
 155
 156     { "request-pac",    0,   arg_flag,  &pac_flag,
 157       NP_("request a Windows PAC", ""), NULL },
 158
 159     { "password-file",  0,   arg_string, &password_file,
 160       NP_("read the password from a file", ""), NULL },
 161
 162     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 163       NP_("canonicalize client principal", ""), NULL },
 164
 165     { "enterprise",0,   arg_flag, &enterprise_flag,
 166       NP_("parse principal as a KRB5-NT-ENTERPRISE name", ""), NULL },
 167 #ifdef PKINIT
 168     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 169       NP_("use enterprise name from certificate", ""), NULL },
 170
 171     { "pk-user",        'C',    arg_string,     &pk_user_id,
 172       NP_("principal's public/private/certificate identifier", ""), "id" },
 173
 174     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 175       NP_("directory with CA certificates", ""), "directory" },
 176
 177     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 178       NP_("Use RSA encrypted reply (instead of DH)", ""), NULL },
 179 #endif
 180 #ifndef NO_NTLM
 181     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 182       NP_("NTLM domain", ""), "domain" },
 183 #endif
 184
 185     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 186       NP_("switch the default cache to the new credentials cache", ""), NULL },
 187
 188     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 189       NP_("honor ok-as-delegate on tickets", ""), NULL },
 190
 191     { "fast-armor-cache",       0,  arg_string, &fast_armor_cache_string,
 192       NP_("use this credential cache as FAST armor cache", ""), "cache" },
 193
 194     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 195       NP_("only use referrals, no dns canalisation", ""), NULL },
 196
 197     { "windows",        0,  arg_flag, &windows_flag,
 198       NP_("get windows behavior", ""), NULL },
 199
 200     { "version",        0,   arg_flag, &version_flag, NULL, NULL },
 201     { "help",           0,   arg_flag, &help_flag, NULL, NULL }
 202 };
 203
 204 static void
 205 usage (int ret)
 206 {
 207     arg_printusage_i18n (args,
 208                          sizeof(args)/sizeof(*args),
 209                          N_("Usage: ", ""),
 210                          NULL,
 211                          "[principal [command]]",
 212                          getarg_i18n);
 213     exit (ret);
 214 }
 215
 216 static krb5_error_code
 217 get_server(krb5_context context,
 218            krb5_principal client,
 219            const char *server,
 220            krb5_principal *princ)
 221 {
 222     krb5_const_realm realm;
 223     if(server)
 224         return krb5_parse_name(context, server, princ);
 225
 226     realm = krb5_principal_get_realm(context, client);
 227     return krb5_make_principal(context, princ, realm,
 228                                KRB5_TGS_NAME, realm, NULL);
 229 }
 230
 231 static int
 232 renew_validate(krb5_context context,
 233                int renew,
 234                int validate,
 235                krb5_ccache cache,
 236                const char *server,
 237                krb5_deltat life)
 238 {
 239     krb5_error_code ret;
 240     krb5_creds in, *out = NULL;
 241     krb5_kdc_flags flags;
 242
 243     memset(&in, 0, sizeof(in));
 244
 245     ret = krb5_cc_get_principal(context, cache, &in.client);
 246     if(ret) {
 247         krb5_warn(context, ret, "krb5_cc_get_principal");
 248         return ret;
 249     }
 250     ret = get_server(context, in.client, server, &in.server);
 251     if(ret) {
 252         krb5_warn(context, ret, "get_server");
 253         goto out;
 254     }
 255
 256     if (renew) {
 257         /*
 258          * no need to check the error here, it's only to be
 259          * friendly to the user
 260          */
 261         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 262     }
 263
 264     flags.i = 0;
 265     flags.b.renewable         = flags.b.renew = renew;
 266     flags.b.validate          = validate;
 267
 268     if (forwardable_flag != -1)
 269         flags.b.forwardable       = forwardable_flag;
 270     else if (out)
 271         flags.b.forwardable       = out->flags.b.forwardable;
 272
 273     if (proxiable_flag != -1)
 274         flags.b.proxiable         = proxiable_flag;
 275     else if (out)
 276         flags.b.proxiable         = out->flags.b.proxiable;
 277
 278     if (anonymous_flag)
 279         flags.b.request_anonymous = anonymous_flag;
 280     if(life)
 281         in.times.endtime = time(NULL) + life;
 282
 283     if (out) {
 284         krb5_free_creds (context, out);
 285         out = NULL;
 286     }
 287
 288
 289     ret = krb5_get_kdc_cred(context,
 290                             cache,
 291                             flags,
 292                             NULL,
 293                             NULL,
 294                             &in,
 295                             &out);
 296     if(ret) {
 297         krb5_warn(context, ret, "krb5_get_kdc_cred");
 298         goto out;
 299     }
 300     ret = krb5_cc_initialize(context, cache, in.client);
 301     if(ret) {
 302         krb5_free_creds (context, out);
 303         krb5_warn(context, ret, "krb5_cc_initialize");
 304         goto out;
 305     }
 306     ret = krb5_cc_store_cred(context, cache, out);
 307
 308     if(ret == 0 && server == NULL) {
 309         /* only do this if it's a general renew-my-tgt request */
 310 #ifndef NO_AFS
 311         if(do_afslog && k_hasafs())
 312             krb5_afslog(context, cache, NULL, NULL);
 313 #endif
 314     }
 315
 316     krb5_free_creds (context, out);
 317     if(ret) {
 318         krb5_warn(context, ret, "krb5_cc_store_cred");
 319         goto out;
 320     }
 321 out:
 322     krb5_free_cred_contents(context, &in);
 323     return ret;
 324 }
 325
 326 #ifndef NO_NTLM
 327
 328 static krb5_error_code
 329 store_ntlmkey(krb5_context context, krb5_ccache id,
 330               const char *domain, struct ntlm_buf *buf)
 331 {
 332     krb5_error_code ret;
 333     krb5_data data;
 334     char *name;
 335
 336     asprintf(&name, "ntlm-key-%s", domain);
 337     if (name == NULL) {
 338         krb5_clear_error_message(context);
 339         return ENOMEM;
 340     }
 341
 342     data.length = buf->length;
 343     data.data = buf->data;
 344
 345     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 346     free(name);
 347     return ret;
 348 }
 349 #endif
 350
 351 static krb5_error_code
 352 get_new_tickets(krb5_context context,
 353                 krb5_principal principal,
 354                 krb5_ccache ccache,
 355                 krb5_deltat ticket_life,
 356                 int interactive)
 357 {
 358     krb5_error_code ret;
 359     krb5_get_init_creds_opt *opt;
 360     krb5_creds cred;
 361     char passwd[256];
 362     krb5_deltat start_time = 0;
 363     krb5_deltat renew = 0;
 364     const char *renewstr = NULL;
 365     krb5_enctype *enctype = NULL;
 366     krb5_ccache tempccache;
 367     krb5_keytab kt = NULL;
 368     krb5_init_creds_context ctx;
 369 #ifndef NO_NTLM
 370     struct ntlm_buf ntlmkey;
 371     memset(&ntlmkey, 0, sizeof(ntlmkey));
 372 #endif
 373     passwd[0] = '\0';
 374
 375     if (password_file) {
 376         FILE *f;
 377
 378         if (strcasecmp("STDIN", password_file) == 0)
 379             f = stdin;
 380         else
 381             f = fopen(password_file, "r");
 382         if (f == NULL)
 383             krb5_errx(context, 1, "Failed to open the password file %s",
 384                       password_file);
 385
 386         if (fgets(passwd, sizeof(passwd), f) == NULL)
 387             krb5_errx(context, 1,
 388                       N_("Failed to read password from file %s", ""),
 389                       password_file);
 390         if (f != stdin)
 391             fclose(f);
 392         passwd[strcspn(passwd, "\n")] = '\0';
 393     }
 394
 395 #ifdef __APPLE__
 396     if (passwd[0] == '\0') {
 397         const char *realm;
 398         OSStatus osret;
 399         UInt32 length;
 400         void *buffer;
 401         char *name;
 402
 403         realm = krb5_principal_get_realm(context, principal);
 404
 405         ret = krb5_unparse_name_flags(context, principal,
 406                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &name);
 407         if (ret)
 408             goto nopassword;
 409
 410         osret = SecKeychainFindGenericPassword(NULL, strlen(realm), realm,
 411                                                strlen(name), name,
 412                                                &length, &buffer, NULL);
 413         free(name);
 414         if (osret == noErr && length < sizeof(passwd) - 1) {
 415             memcpy(passwd, buffer, length);
 416             passwd[length] = '\0';
 417         }
 418     nopassword:
 419         do { } while(0);
 420     }
 421 #endif
 422
 423     memset(&cred, 0, sizeof(cred));
 424
 425     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 426     if (ret)
 427         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 428
 429     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 430         krb5_principal_get_realm(context, principal), opt);
 431
 432     if(forwardable_flag != -1)
 433         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 434     if(proxiable_flag != -1)
 435         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 436     if(anonymous_flag)
 437         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 438     if (pac_flag != -1)
 439         krb5_get_init_creds_opt_set_pac_request(context, opt,
 440                                                 pac_flag ? TRUE : FALSE);
 441     if (canonicalize_flag)
 442         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 443     if (pk_enterprise_flag || enterprise_flag || canonicalize_flag || windows_flag)
 444         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 445     if (pk_user_id || ent_user_id || anonymous_flag) {
 446         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 447                                                  principal,
 448                                                  pk_user_id,
 449                                                  pk_x509_anchors,
 450                                                  NULL,
 451                                                  NULL,
 452                                                  pk_use_enckey ? 2 : 0 |
 453                                                  anonymous_flag ? 4 : 0,
 454                                                  krb5_prompter_posix,
 455                                                  NULL,
 456                                                  passwd);
 457         if (ret)
 458             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 459         if (ent_user_id)
 460             krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
 461     }
 462
 463     if (addrs_flag != -1)
 464         krb5_get_init_creds_opt_set_addressless(context, opt,
 465                                                 addrs_flag ? FALSE : TRUE);
 466
 467     if (renew_life == NULL && renewable_flag)
 468         renewstr = "1 month";
 469     if (renew_life)
 470         renewstr = renew_life;
 471     if (renewstr) {
 472         renew = parse_time (renewstr, "s");
 473         if (renew < 0)
 474             errx (1, "unparsable time: %s", renewstr);
 475
 476         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 477     }
 478
 479     if(ticket_life != 0)
 480         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 481
 482     if(start_str) {
 483         int tmp = parse_time (start_str, "s");
 484         if (tmp < 0)
 485             errx (1, N_("unparsable time: %s", ""), start_str);
 486
 487         start_time = tmp;
 488     }
 489
 490     if(etype_str.num_strings) {
 491         int i;
 492
 493         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 494         if(enctype == NULL)
 495             errx(1, "out of memory");
 496         for(i = 0; i < etype_str.num_strings; i++) {
 497             ret = krb5_string_to_enctype(context,
 498                                          etype_str.strings[i],
 499                                          &enctype[i]);
 500             if(ret)
 501                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 502         }
 503         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 504                                                etype_str.num_strings);
 505     }
 506
 507     ret = krb5_init_creds_init(context, principal, krb5_prompter_posix, NULL, start_time, opt, &ctx);
 508     if (ret)
 509         krb5_err(context, 1, ret, "krb5_init_creds_init");
 510
 511     if (server_str) {
 512         ret = krb5_init_creds_set_service(context, ctx, server_str);
 513         if (ret)
 514             krb5_err(context, 1, ret, "krb5_init_creds_set_service");
 515     }
 516
 517     if (fast_armor_cache_string) {
 518         krb5_ccache fastid;
 519
 520         ret = krb5_cc_resolve(context, fast_armor_cache_string, &fastid);
 521         if (ret)
 522             krb5_err(context, 1, ret, "krb5_cc_resolve(FAST cache)");
 523
 524         ret = krb5_init_creds_set_fast_ccache(context, ctx, fastid);
 525         if (ret)
 526             krb5_err(context, 1, ret, "krb5_init_creds_set_fast_ccache");
 527     }
 528
 529     if(use_keytab || keytab_str) {
 530
 531         if(keytab_str)
 532             ret = krb5_kt_resolve(context, keytab_str, &kt);
 533         else
 534             ret = krb5_kt_default(context, &kt);
 535         if (ret)
 536             krb5_err(context, 1, ret, "resolving keytab");
 537
 538         ret = krb5_init_creds_set_keytab(context, ctx, kt);
 539         if (ret)
 540             krb5_err(context, 1, ret, "krb5_init_creds_set_keytab");
 541
 542     } else if (pk_user_id || ent_user_id || anonymous_flag) {
 543
 544     } else if (!interactive) {
 545         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 546         krb5_get_init_creds_opt_free(context, opt);
 547         return 0;
 548     } else {
 549
 550         if (passwd[0] == '\0') {
 551             char *p, *prompt;
 552
 553             krb5_unparse_name (context, principal, &p);
 554             asprintf (&prompt, N_("%s's Password: ", ""), p);
 555             free (p);
 556
 557             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 558                 memset(passwd, 0, sizeof(passwd));
 559                 errx(1, "failed to read password");
 560             }
 561             free (prompt);
 562         }
 563
 564         if (passwd[0]) {
 565             ret = krb5_init_creds_set_password(context, ctx, passwd);
 566             if (ret)
 567                 krb5_err(context, 1, ret, "krb5_init_creds_set_password");
 568         }
 569     }
 570
 571     ret = krb5_init_creds_get(context, ctx);
 572
 573 #ifndef NO_NTLM
 574     if (ntlm_domain && passwd[0])
 575         heim_ntlm_nt_key(passwd, &ntlmkey);
 576 #endif
 577     memset(passwd, 0, sizeof(passwd));
 578
 579     switch(ret){
 580     case 0:
 581         break;
 582     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 583         exit(1);
 584     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 585     case KRB5KRB_AP_ERR_MODIFIED:
 586     case KRB5KDC_ERR_PREAUTH_FAILED:
 587         krb5_errx(context, 1, N_("Password incorrect", ""));
 588         break;
 589     case KRB5KRB_AP_ERR_V4_REPLY:
 590         krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
 591         break;
 592     default:
 593         krb5_err(context, 1, ret, "krb5_get_init_creds");
 594     }
 595
 596     krb5_process_last_request(context, opt, ctx);
 597
 598     ret = krb5_init_creds_get_creds(context, ctx, &cred);
 599     if (ret)
 600             krb5_err(context, 1, ret, "krb5_init_creds_get_creds");
 601
 602     if(ticket_life != 0) {
 603         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 604             char life[64];
 605             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 606                                 life, sizeof(life));
 607             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 608         }
 609     }
 610     if(renew_life) {
 611         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 612             char life[64];
 613             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 614                                 life, sizeof(life));
 615             krb5_warnx(context,
 616                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 617                        life);
 618         }
 619     }
 620
 621     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 622                              NULL, &tempccache);
 623     if (ret)
 624         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 625
 626     ret = krb5_init_creds_store(context, ctx, tempccache);
 627     if (ret)
 628         krb5_err(context, 1, ret, "krb5_init_creds_store");
 629
 630     krb5_init_creds_free(context, ctx);
 631
 632     ret = krb5_cc_move(context, tempccache, ccache);
 633     if (ret)
 634         krb5_err (context, 1, ret, "krb5_cc_move");
 635
 636     if (switch_cache_flags)
 637         krb5_cc_switch(context, ccache);
 638
 639 #ifndef NO_NTLM
 640     if (ntlm_domain && ntlmkey.data)
 641         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 642 #endif
 643
 644     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 645         unsigned char d = 0;
 646         krb5_data data;
 647
 648         if (ok_as_delegate_flag || windows_flag)
 649             d |= 1;
 650         if (use_referrals_flag || windows_flag)
 651             d |= 2;
 652
 653         data.length = 1;
 654         data.data = &d;
 655
 656         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 657     }
 658
 659     krb5_get_init_creds_opt_free(context, opt);
 660
 661     if (kt)
 662         krb5_kt_close(context, kt);
 663     if (enctype)
 664         free(enctype);
 665
 666     return 0;
 667 }
 668
 669 static time_t
 670 ticket_lifetime(krb5_context context, krb5_ccache cache,
 671                 krb5_principal client, const char *server)
 672 {
 673     krb5_creds in_cred, *cred;
 674     krb5_error_code ret;
 675     time_t timeout;
 676
 677     memset(&in_cred, 0, sizeof(in_cred));
 678
 679     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 680     if(ret) {
 681         krb5_warn(context, ret, "krb5_cc_get_principal");
 682         return 0;
 683     }
 684     ret = get_server(context, in_cred.client, server, &in_cred.server);
 685     if(ret) {
 686         krb5_free_principal(context, in_cred.client);
 687         krb5_warn(context, ret, "get_server");
 688         return 0;
 689     }
 690
 691     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 692                                cache, &in_cred, &cred);
 693     krb5_free_principal(context, in_cred.client);
 694     krb5_free_principal(context, in_cred.server);
 695     if(ret) {
 696         krb5_warn(context, ret, "krb5_get_credentials");
 697         return 0;
 698     }
 699     timeout = cred->times.endtime - cred->times.starttime;
 700     if (timeout < 0)
 701         timeout = 0;
 702     krb5_free_creds(context, cred);
 703     return timeout;
 704 }
 705
 706 struct renew_ctx {
 707     krb5_context context;
 708     krb5_ccache  ccache;
 709     krb5_principal principal;
 710     krb5_deltat ticket_life;
 711 };
 712
 713 static time_t
 714 renew_func(void *ptr)
 715 {
 716     struct renew_ctx *ctx = ptr;
 717     krb5_error_code ret;
 718     time_t expire;
 719     int new_tickets = 0;
 720
 721     if (renewable_flag) {
 722         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 723                              ctx->ccache, server_str, ctx->ticket_life);
 724         if (ret)
 725             new_tickets = 1;
 726     } else
 727         new_tickets = 1;
 728
 729     if (new_tickets)
 730         get_new_tickets(ctx->context, ctx->principal,
 731                         ctx->ccache, ctx->ticket_life, 0);
 732
 733 #ifndef NO_AFS
 734     if(do_afslog && k_hasafs())
 735         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 736 #endif
 737
 738     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 739                              server_str) / 2;
 740     return expire + 1;
 741 }
 742
 743 int
 744 main (int argc, char **argv)
 745 {
 746     krb5_error_code ret;
 747     krb5_context context;
 748     krb5_ccache  ccache;
 749     krb5_principal principal;
 750     int optidx = 0;
 751     krb5_deltat ticket_life = 0;
 752     int parseflags = 0;
 753
 754     setprogname (argv[0]);
 755
 756     setlocale (LC_ALL, "");
 757     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 758     textdomain("heimdal_kuser");
 759
 760     ret = krb5_init_context (&context);
 761     if (ret == KRB5_CONFIG_BADFORMAT)
 762         errx (1, "krb5_init_context failed to parse configuration file");
 763     else if (ret)
 764         errx(1, "krb5_init_context failed: %d", ret);
 765
 766     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 767         usage(1);
 768
 769     if (help_flag)
 770         usage (0);
 771
 772     if(version_flag) {
 773         print_version(NULL);
 774         exit(0);
 775     }
 776
 777     argc -= optidx;
 778     argv += optidx;
 779
 780     if (canonicalize_flag || enterprise_flag)
 781         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 782
 783     if (pk_enterprise_flag) {
 784         ret = krb5_pk_enterprise_cert(context, pk_user_id,
 785                                       argv[0], &principal,
 786                                       &ent_user_id);
 787         if (ret)
 788             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
 789
 790         pk_user_id = NULL;
 791
 792     } else if (anonymous_flag) {
 793
 794         ret = krb5_make_principal(context, &principal, argv[0],
 795                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
 796                                   NULL);
 797         if (ret)
 798             krb5_err(context, 1, ret, "krb5_make_principal");
 799         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
 800
 801     } else {
 802         if (argv[0]) {
 803             ret = krb5_parse_name_flags (context, argv[0], parseflags,
 804                                          &principal);
 805             if (ret)
 806                 krb5_err (context, 1, ret, "krb5_parse_name");
 807         } else {
 808             ret = krb5_get_default_principal (context, &principal);
 809             if (ret)
 810                 krb5_err (context, 1, ret, "krb5_get_default_principal");
 811         }
 812     }
 813
 814     if(fcache_version)
 815         krb5_set_fcache_version(context, fcache_version);
 816
 817     if(renewable_flag == -1)
 818         /* this seems somewhat pointless, but whatever */
 819         krb5_appdefault_boolean(context, "kinit",
 820                                 krb5_principal_get_realm(context, principal),
 821                                 "renewable", FALSE, &renewable_flag);
 822     if(do_afslog == -1)
 823         krb5_appdefault_boolean(context, "kinit",
 824                                 krb5_principal_get_realm(context, principal),
 825                                 "afslog", TRUE, &do_afslog);
 826
 827     if(cred_cache)
 828         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 829     else {
 830         if(argc > 1) {
 831             char s[1024];
 832             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
 833             if(ret)
 834                 krb5_err(context, 1, ret, "creating cred cache");
 835             snprintf(s, sizeof(s), "%s:%s",
 836                      krb5_cc_get_type(context, ccache),
 837                      krb5_cc_get_name(context, ccache));
 838             setenv("KRB5CCNAME", s, 1);
 839         } else {
 840             ret = krb5_cc_cache_match(context, principal, &ccache);
 841             if (ret) {
 842                 const char *type;
 843                 ret = krb5_cc_default (context, &ccache);
 844                 if (ret)
 845                     krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 846
 847                 /*
 848                  * Check if the type support switching, and we do,
 849                  * then do that instead over overwriting the current
 850                  * default credential
 851                  */
 852                 type = krb5_cc_get_type(context, ccache);
 853                 if (krb5_cc_support_switch(context, type)) {
 854                     krb5_cc_close(context, ccache);
 855                     ret = krb5_cc_new_unique(context, type, NULL, &ccache);
 856                 }
 857             }
 858         }
 859     }
 860     if (ret)
 861         krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 862
 863 #ifndef NO_AFS
 864     if(argc > 1 && k_hasafs ())
 865         k_setpag();
 866 #endif
 867
 868     if (lifetime) {
 869         int tmp = parse_time (lifetime, "s");
 870         if (tmp < 0)
 871             errx (1, N_("unparsable time: %s", ""), lifetime);
 872
 873         ticket_life = tmp;
 874     }
 875
 876     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 877         krb5_errx(context, 1,
 878                   N_("specifying both extra addresses and "
 879                      "no addresses makes no sense", ""));
 880     {
 881         int i;
 882         krb5_addresses addresses;
 883         memset(&addresses, 0, sizeof(addresses));
 884         for(i = 0; i < extra_addresses.num_strings; i++) {
 885             ret = krb5_parse_address(context, extra_addresses.strings[i],
 886                                      &addresses);
 887             if (ret == 0) {
 888                 krb5_add_extra_addresses(context, &addresses);
 889                 krb5_free_addresses(context, &addresses);
 890             }
 891         }
 892         free_getarg_strings(&extra_addresses);
 893     }
 894
 895     if(renew_flag || validate_flag) {
 896         ret = renew_validate(context, renew_flag, validate_flag,
 897                              ccache, server_str, ticket_life);
 898         exit(ret != 0);
 899     }
 900
 901     get_new_tickets(context, principal, ccache, ticket_life, 1);
 902
 903 #ifndef NO_AFS
 904     if(do_afslog && k_hasafs())
 905         krb5_afslog(context, ccache, NULL, NULL);
 906 #endif
 907     if(argc > 1) {
 908         struct renew_ctx ctx;
 909         time_t timeout;
 910
 911         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 912
 913         ctx.context = context;
 914         ctx.ccache = ccache;
 915         ctx.principal = principal;
 916         ctx.ticket_life = ticket_life;
 917
 918         ret = simple_execvp_timed(argv[1], argv+1,
 919                                   renew_func, &ctx, timeout);
 920 #define EX_NOEXEC       126
 921 #define EX_NOTFOUND     127
 922         if(ret == EX_NOEXEC)
 923             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
 924         else if(ret == EX_NOTFOUND)
 925             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
 926
 927         krb5_cc_destroy(context, ccache);
 928 #ifndef NO_AFS
 929         if(k_hasafs())
 930             k_unlog();
 931 #endif
 932     } else {
 933         krb5_cc_close (context, ccache);
 934         ret = 0;
 935     }
 936     krb5_free_principal(context, principal);
 937     krb5_free_context (context);
 938     return ret;
 939 }