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 HAVE_FRAMEWORK_SECURITY
  39 #include <Security/Security.h>
  40 #endif
  41
  42 #ifndef NO_NTLM
  43 #include "heimntlm.h"
  44 #endif
  45
  46 #ifndef SIGINFO
  47 #define SIGINFO SIGUSR1
  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 static krb5_keytab kt   = NULL;
  71 int do_afslog           = -1;
  72 int fcache_version;
  73 char *password_file     = NULL;
  74 char *pk_user_id        = NULL;
  75 int pk_enterprise_flag = 0;
  76 struct hx509_certs_data *ent_user_id = NULL;
  77 char *pk_x509_anchors   = NULL;
  78 int pk_use_enckey       = 0;
  79 static int canonicalize_flag = 0;
  80 static int enterprise_flag = 0;
  81 static int ok_as_delegate_flag = 0;
  82 static char *fast_armor_cache_string = NULL;
  83 static int use_referrals_flag = 0;
  84 static int windows_flag = 0;
  85 #ifndef NO_NTLM
  86 static char *ntlm_domain;
  87 #endif
  88
  89
  90 static struct getargs args[] = {
  91     /*
  92      * used by MIT
  93      * a: ~A
  94      * V: verbose
  95      * F: ~f
  96      * P: ~p
  97      * C: v4 cache name?
  98      * 5:
  99      *
 100      * old flags
 101      * 4:
 102      * 9:
 103      */
 104     { "afslog",         0  , arg_flag, &do_afslog,
 105       NP_("obtain afs tokens", ""), NULL },
 106
 107     { "cache",          'c', arg_string, &cred_cache,
 108       NP_("credentials cache", ""), "cachename" },
 109
 110     { "forwardable",    'F', arg_negative_flag, &forwardable_flag,
 111       NP_("get tickets not forwardable", ""), NULL },
 112
 113     { NULL,             'f', arg_flag, &forwardable_flag,
 114       NP_("get forwardable tickets", ""), NULL },
 115
 116     { "keytab",         't', arg_string, &keytab_str,
 117       NP_("keytab to use", ""), "keytabname" },
 118
 119     { "lifetime",       'l', arg_string, &lifetime,
 120       NP_("lifetime of tickets", ""), "time" },
 121
 122     { "proxiable",      'p', arg_flag, &proxiable_flag,
 123       NP_("get proxiable tickets", ""), NULL },
 124
 125     { "renew",          'R', arg_flag, &renew_flag,
 126       NP_("renew TGT", ""), NULL },
 127
 128     { "renewable",      0,   arg_flag, &renewable_flag,
 129       NP_("get renewable tickets", ""), NULL },
 130
 131     { "renewable-life", 'r', arg_string, &renew_life,
 132       NP_("renewable lifetime of tickets", ""), "time" },
 133
 134     { "server",         'S', arg_string, &server_str,
 135       NP_("server to get ticket for", ""), "principal" },
 136
 137     { "start-time",     's', arg_string, &start_str,
 138       NP_("when ticket gets valid", ""), "time" },
 139
 140     { "use-keytab",     'k', arg_flag, &use_keytab,
 141       NP_("get key from keytab", ""), NULL },
 142
 143     { "validate",       'v', arg_flag, &validate_flag,
 144       NP_("validate TGT", ""), NULL },
 145
 146     { "enctypes",       'e', arg_strings, &etype_str,
 147       NP_("encryption types to use", ""), "enctypes" },
 148
 149     { "fcache-version", 0,   arg_integer, &fcache_version,
 150       NP_("file cache version to create", ""), NULL },
 151
 152     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 153       NP_("request a ticket with no addresses", ""), NULL },
 154
 155     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 156       NP_("include these extra addresses", ""), "addresses" },
 157
 158     { "anonymous",      'n',   arg_flag,        &anonymous_flag,
 159       NP_("request an anonymous ticket", ""), NULL },
 160
 161     { "request-pac",    0,   arg_flag,  &pac_flag,
 162       NP_("request a Windows PAC", ""), NULL },
 163
 164     { "password-file",  0,   arg_string, &password_file,
 165       NP_("read the password from a file", ""), NULL },
 166
 167     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 168       NP_("canonicalize client principal", ""), NULL },
 169
 170     { "enterprise",0,   arg_flag, &enterprise_flag,
 171       NP_("parse principal as a KRB5-NT-ENTERPRISE name", ""), NULL },
 172 #ifdef PKINIT
 173     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 174       NP_("use enterprise name from certificate", ""), NULL },
 175
 176     { "pk-user",        'C',    arg_string,     &pk_user_id,
 177       NP_("principal's public/private/certificate identifier", ""), "id" },
 178
 179     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 180       NP_("directory with CA certificates", ""), "directory" },
 181
 182     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 183       NP_("Use RSA encrypted reply (instead of DH)", ""), NULL },
 184 #endif
 185 #ifndef NO_NTLM
 186     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 187       NP_("NTLM domain", ""), "domain" },
 188 #endif
 189
 190     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 191       NP_("switch the default cache to the new credentials cache", ""), NULL },
 192
 193     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 194       NP_("honor ok-as-delegate on tickets", ""), NULL },
 195
 196     { "fast-armor-cache",       0,  arg_string, &fast_armor_cache_string,
 197       NP_("use this credential cache as FAST armor cache", ""), "cache" },
 198
 199     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 200       NP_("only use referrals, no dns canalisation", ""), NULL },
 201
 202     { "windows",        0,  arg_flag, &windows_flag,
 203       NP_("get windows behavior", ""), NULL },
 204
 205     { "version",        0,   arg_flag, &version_flag, NULL, NULL },
 206     { "help",           0,   arg_flag, &help_flag, NULL, NULL }
 207 };
 208
 209 static char *
 210 get_default_realm(krb5_context context);
 211
 212 static void
 213 usage(int ret)
 214 {
 215     arg_printusage_i18n(args, sizeof(args)/sizeof(*args), N_("Usage: ", ""),
 216                         NULL, "[principal [command]]", getarg_i18n);
 217     exit(ret);
 218 }
 219
 220 static krb5_error_code
 221 get_server(krb5_context context,
 222            krb5_principal client,
 223            const char *server,
 224            krb5_principal *princ)
 225 {
 226     krb5_const_realm realm;
 227     if (server)
 228         return krb5_parse_name(context, server, princ);
 229
 230     realm = krb5_principal_get_realm(context, client);
 231     return krb5_make_principal(context, princ, realm,
 232                                KRB5_TGS_NAME, realm, NULL);
 233 }
 234
 235 static krb5_error_code
 236 copy_configs(krb5_context context,
 237              krb5_ccache dst,
 238              krb5_ccache src,
 239              krb5_principal start_ticket_server)
 240 {
 241     krb5_error_code ret;
 242     const char *cfg_names[] = {"realm-config", "FriendlyName", "anon_pkinit_realm", NULL};
 243     const char *cfg_names_w_pname[] = {"fast_avail", NULL};
 244     krb5_data cfg_data;
 245     size_t i;
 246
 247     for (i = 0; cfg_names[i]; i++) {
 248         ret = krb5_cc_get_config(context, src, NULL, cfg_names[i], &cfg_data);
 249         if (ret == KRB5_CC_NOTFOUND || ret == KRB5_CC_END) {
 250             continue;
 251         } else if (ret) {
 252             krb5_warn(context, ret, "krb5_cc_get_config");
 253             return ret;
 254         }
 255         ret = krb5_cc_set_config(context, dst, NULL, cfg_names[i], &cfg_data);
 256         if (ret)
 257             krb5_warn(context, ret, "krb5_cc_set_config");
 258     }
 259     for (i = 0; start_ticket_server && cfg_names_w_pname[i]; i++) {
 260         ret = krb5_cc_get_config(context, src, start_ticket_server,
 261                                  cfg_names_w_pname[i], &cfg_data);
 262         if (ret == KRB5_CC_NOTFOUND || ret == KRB5_CC_END) {
 263             continue;
 264         } else if (ret) {
 265             krb5_warn(context, ret, "krb5_cc_get_config");
 266             return ret;
 267         }
 268         ret = krb5_cc_set_config(context, dst, start_ticket_server,
 269                                  cfg_names_w_pname[i], &cfg_data);
 270         if (ret && ret != KRB5_CC_NOTFOUND)
 271             krb5_warn(context, ret, "krb5_cc_set_config");
 272     }
 273     /*
 274      * We don't copy cc configs for any other principals though (mostly
 275      * those are per-target time offsets and the like, so it's bad to
 276      * lose them, but hardly the end of the world, and as they may not
 277      * expire anyways, it's good to let them go).
 278      */
 279     return 0;
 280 }
 281
 282 static krb5_error_code
 283 get_anon_pkinit_tgs_name(krb5_context context,
 284                          krb5_ccache ccache,
 285                          krb5_principal *tgs_name)
 286 {
 287     krb5_error_code ret;
 288     krb5_data data;
 289     char *realm;
 290
 291     ret = krb5_cc_get_config(context, ccache, NULL, "anon_pkinit_realm", &data);
 292     if (ret == 0)
 293         realm = strndup(data.data, data.length);
 294     else
 295         realm = get_default_realm(context);
 296
 297     krb5_data_free(&data);
 298
 299     if (realm == NULL)
 300         return krb5_enomem(context);
 301
 302     ret = krb5_make_principal(context, tgs_name, realm,
 303                               KRB5_TGS_NAME, realm, NULL);
 304
 305     free(realm);
 306
 307     return ret;
 308 }
 309
 310 static krb5_error_code
 311 renew_validate(krb5_context context,
 312                int renew,
 313                int validate,
 314                krb5_ccache cache,
 315                const char *server,
 316                krb5_deltat life)
 317 {
 318     krb5_error_code ret;
 319     krb5_ccache tempccache = NULL;
 320     krb5_creds in, *out = NULL;
 321     krb5_kdc_flags flags;
 322
 323     memset(&in, 0, sizeof(in));
 324
 325     ret = krb5_cc_get_principal(context, cache, &in.client);
 326     if (ret) {
 327         krb5_warn(context, ret, "krb5_cc_get_principal");
 328         return ret;
 329     }
 330
 331     if (server == NULL &&
 332         krb5_principal_is_anonymous(context, in.client,
 333                                     KRB5_ANON_MATCH_UNAUTHENTICATED))
 334         ret = get_anon_pkinit_tgs_name(context, cache, &in.server);
 335     else
 336         ret = get_server(context, in.client, server, &in.server);
 337     if (ret) {
 338         krb5_warn(context, ret, "get_server");
 339         goto out;
 340     }
 341
 342     if (renew) {
 343         /*
 344          * no need to check the error here, it's only to be
 345          * friendly to the user
 346          */
 347         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 348     }
 349
 350     flags.i = 0;
 351     flags.b.renewable         = flags.b.renew = renew;
 352     flags.b.validate          = validate;
 353
 354     if (forwardable_flag != -1)
 355         flags.b.forwardable       = forwardable_flag;
 356     else if (out)
 357         flags.b.forwardable       = out->flags.b.forwardable;
 358
 359     if (proxiable_flag != -1)
 360         flags.b.proxiable         = proxiable_flag;
 361     else if (out)
 362         flags.b.proxiable         = out->flags.b.proxiable;
 363
 364     if (anonymous_flag)
 365         flags.b.request_anonymous = anonymous_flag;
 366     if (life)
 367         in.times.endtime = time(NULL) + life;
 368
 369     if (out) {
 370         krb5_free_creds(context, out);
 371         out = NULL;
 372     }
 373
 374
 375     ret = krb5_get_kdc_cred(context,
 376                             cache,
 377                             flags,
 378                             NULL,
 379                             NULL,
 380                             &in,
 381                             &out);
 382     if (ret) {
 383         krb5_warn(context, ret, "krb5_get_kdc_cred");
 384         goto out;
 385     }
 386
 387     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, cache),
 388                              NULL, &tempccache);
 389     if (ret) {
 390         krb5_warn(context, ret, "krb5_cc_new_unique");
 391         goto out;
 392     }
 393
 394     ret = krb5_cc_initialize(context, tempccache, in.client);
 395     if (ret) {
 396         krb5_warn(context, ret, "krb5_cc_initialize");
 397         goto out;
 398     }
 399
 400     ret = krb5_cc_store_cred(context, tempccache, out);
 401     if (ret) {
 402         krb5_warn(context, ret, "krb5_cc_store_cred");
 403         goto out;
 404     }
 405
 406     /*
 407      * We want to preserve cc configs as some are security-relevant, and
 408      * anyways it's the friendly thing to do.
 409      */
 410     ret = copy_configs(context, tempccache, cache, out->server);
 411     if (ret)
 412         goto out;
 413
 414     ret = krb5_cc_move(context, tempccache, cache);
 415     if (ret) {
 416         krb5_warn(context, ret, "krb5_cc_move");
 417         goto out;
 418     }
 419     tempccache = NULL;
 420
 421 out:
 422     if (tempccache)
 423         krb5_cc_destroy(context, tempccache);
 424     if (out)
 425         krb5_free_creds(context, out);
 426     krb5_free_cred_contents(context, &in);
 427     return ret;
 428 }
 429
 430 #ifndef NO_NTLM
 431
 432 static krb5_error_code
 433 store_ntlmkey(krb5_context context, krb5_ccache id,
 434               const char *domain, struct ntlm_buf *buf)
 435 {
 436     krb5_error_code ret;
 437     krb5_data data;
 438     char *name;
 439     int aret;
 440
 441     ret = krb5_cc_get_config(context, id, NULL, "default-ntlm-domain", &data);
 442     if (ret == 0) {
 443         krb5_data_free(&data);
 444     } else {
 445         data.length = strlen(domain);
 446         data.data = rk_UNCONST(domain);
 447         ret = krb5_cc_set_config(context, id, NULL, "default-ntlm-domain", &data);
 448         if (ret != 0)
 449             return ret;
 450     }
 451
 452     aret = asprintf(&name, "ntlm-key-%s", domain);
 453     if (aret == -1 || name == NULL)
 454         return krb5_enomem(context);
 455
 456     data.length = buf->length;
 457     data.data = buf->data;
 458
 459     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 460     free(name);
 461     return ret;
 462 }
 463 #endif
 464
 465 static krb5_error_code
 466 get_new_tickets(krb5_context context,
 467                 krb5_principal principal,
 468                 krb5_ccache ccache,
 469                 krb5_deltat ticket_life,
 470                 int interactive,
 471                 int anonymous_pkinit)
 472 {
 473     krb5_error_code ret;
 474     krb5_creds cred;
 475     char passwd[256];
 476     krb5_deltat start_time = 0;
 477     krb5_deltat renew = 0;
 478     const char *renewstr = NULL;
 479     krb5_enctype *enctype = NULL;
 480     krb5_ccache tempccache = NULL;
 481     krb5_init_creds_context ctx = NULL;
 482     krb5_get_init_creds_opt *opt = NULL;
 483     krb5_prompter_fct prompter = krb5_prompter_posix;
 484 #ifndef NO_NTLM
 485     struct ntlm_buf ntlmkey;
 486     memset(&ntlmkey, 0, sizeof(ntlmkey));
 487 #endif
 488     passwd[0] = '\0';
 489
 490     if (!interactive)
 491         prompter = NULL;
 492
 493     if (password_file) {
 494         FILE *f;
 495
 496         if (strcasecmp("STDIN", password_file) == 0)
 497             f = stdin;
 498         else
 499             f = fopen(password_file, "r");
 500         if (f == NULL) {
 501             krb5_warnx(context, N_("Failed to open the password file %s", ""),
 502                        password_file);
 503             return errno;
 504         }
 505
 506         if (fgets(passwd, sizeof(passwd), f) == NULL) {
 507             krb5_warnx(context, N_("Failed to read password from file %s", ""),
 508                        password_file);
 509             if (f != stdin)
 510                 fclose(f);
 511             return EINVAL; /* XXX Need a better error */
 512         }
 513         if (f != stdin)
 514             fclose(f);
 515         passwd[strcspn(passwd, "\n")] = '\0';
 516     }
 517
 518 #ifdef HAVE_FRAMEWORK_SECURITY
 519     if (passwd[0] == '\0') {
 520         const char *realm;
 521         OSStatus osret;
 522         UInt32 length;
 523         void *buffer;
 524         char *name;
 525
 526         realm = krb5_principal_get_realm(context, principal);
 527
 528         ret = krb5_unparse_name_flags(context, principal,
 529                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &name);
 530         if (ret)
 531             goto nopassword;
 532
 533         osret = SecKeychainFindGenericPassword(NULL, strlen(realm), realm,
 534                                                strlen(name), name,
 535                                                &length, &buffer, NULL);
 536         free(name);
 537         if (osret == noErr && length < sizeof(passwd) - 1) {
 538             memcpy(passwd, buffer, length);
 539             passwd[length] = '\0';
 540         }
 541     nopassword:
 542         do { } while(0);
 543     }
 544 #endif
 545
 546     memset(&cred, 0, sizeof(cred));
 547
 548     ret = krb5_get_init_creds_opt_alloc(context, &opt);
 549     if (ret) {
 550         krb5_warn(context, ret, "krb5_get_init_creds_opt_alloc");
 551         goto out;
 552     }
 553
 554     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 555         krb5_principal_get_realm(context, principal), opt);
 556
 557     if (forwardable_flag != -1)
 558         krb5_get_init_creds_opt_set_forwardable(opt, forwardable_flag);
 559     if (proxiable_flag != -1)
 560         krb5_get_init_creds_opt_set_proxiable(opt, proxiable_flag);
 561     if (anonymous_flag)
 562         krb5_get_init_creds_opt_set_anonymous(opt, anonymous_flag);
 563     if (pac_flag != -1)
 564         krb5_get_init_creds_opt_set_pac_request(context, opt,
 565                                                 pac_flag ? TRUE : FALSE);
 566     if (canonicalize_flag)
 567         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 568     if (pk_enterprise_flag || enterprise_flag || canonicalize_flag || windows_flag)
 569         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 570     if (pk_user_id || ent_user_id || anonymous_pkinit) {
 571         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 572                                                  principal,
 573                                                  pk_user_id,
 574                                                  pk_x509_anchors,
 575                                                  NULL,
 576                                                  NULL,
 577                                                  pk_use_enckey ? KRB5_GIC_OPT_PKINIT_USE_ENCKEY : 0 |
 578                                                  anonymous_pkinit ? KRB5_GIC_OPT_PKINIT_ANONYMOUS : 0,
 579                                                  prompter,
 580                                                  NULL,
 581                                                  passwd);
 582         if (ret) {
 583             krb5_warn(context, ret, "krb5_get_init_creds_opt_set_pkinit");
 584             goto out;
 585         }
 586         if (ent_user_id)
 587             krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
 588     }
 589
 590     if (addrs_flag != -1)
 591         krb5_get_init_creds_opt_set_addressless(context, opt,
 592                                                 addrs_flag ? FALSE : TRUE);
 593
 594     if (renew_life == NULL && renewable_flag)
 595         renewstr = "6 months";
 596     if (renew_life)
 597         renewstr = renew_life;
 598     if (renewstr) {
 599         renew = parse_time(renewstr, "s");
 600         if (renew < 0)
 601             errx(1, "unparsable time: %s", renewstr);
 602
 603         krb5_get_init_creds_opt_set_renew_life(opt, renew);
 604     }
 605
 606     if (ticket_life != 0)
 607         krb5_get_init_creds_opt_set_tkt_life(opt, ticket_life);
 608
 609     if (start_str) {
 610         int tmp = parse_time(start_str, "s");
 611         if (tmp < 0)
 612             errx(1, N_("unparsable time: %s", ""), start_str);
 613
 614         start_time = tmp;
 615     }
 616
 617     if (etype_str.num_strings) {
 618         int i;
 619
 620         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 621         if (enctype == NULL)
 622             errx(1, "out of memory");
 623         for(i = 0; i < etype_str.num_strings; i++) {
 624             ret = krb5_string_to_enctype(context,
 625                                          etype_str.strings[i],
 626                                          &enctype[i]);
 627             if (ret)
 628                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 629         }
 630         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 631                                                etype_str.num_strings);
 632     }
 633
 634     ret = krb5_init_creds_init(context, principal, prompter, NULL, start_time, opt, &ctx);
 635     if (ret) {
 636         krb5_warn(context, ret, "krb5_init_creds_init");
 637         goto out;
 638     }
 639
 640     if (server_str) {
 641         ret = krb5_init_creds_set_service(context, ctx, server_str);
 642         if (ret) {
 643             krb5_warn(context, ret, "krb5_init_creds_set_service");
 644             goto out;
 645         }
 646     }
 647
 648     if (fast_armor_cache_string) {
 649         krb5_ccache fastid;
 650
 651         ret = krb5_cc_resolve(context, fast_armor_cache_string, &fastid);
 652         if (ret) {
 653             krb5_warn(context, ret, "krb5_cc_resolve(FAST cache)");
 654             goto out;
 655         }
 656
 657         ret = krb5_init_creds_set_fast_ccache(context, ctx, fastid);
 658         if (ret) {
 659             krb5_warn(context, ret, "krb5_init_creds_set_fast_ccache");
 660             goto out;
 661         }
 662     }
 663
 664     if (use_keytab || keytab_str) {
 665         ret = krb5_init_creds_set_keytab(context, ctx, kt);
 666         if (ret) {
 667             krb5_warn(context, ret, "krb5_init_creds_set_keytab");
 668             goto out;
 669         }
 670     } else if (pk_user_id || ent_user_id ||
 671                krb5_principal_is_anonymous(context, principal, KRB5_ANON_MATCH_ANY)) {
 672
 673     } else if (!interactive && passwd[0] == '\0') {
 674         static int already_warned = 0;
 675
 676         if (!already_warned)
 677             krb5_warnx(context, "Not interactive, failed to get "
 678               "initial ticket");
 679         krb5_get_init_creds_opt_free(context, opt);
 680         already_warned = 1;
 681         return 0;
 682     } else {
 683
 684         if (passwd[0] == '\0') {
 685             char *p, *prompt;
 686             int aret = 0;
 687
 688             ret = krb5_unparse_name(context, principal, &p);
 689             if (ret)
 690                 errx(1, "failed to generate passwd prompt: not enough memory");
 691
 692             aret = asprintf(&prompt, N_("%s's Password: ", ""), p);
 693             free(p);
 694             if (aret == -1)
 695                 errx(1, "failed to generate passwd prompt: not enough memory");
 696
 697             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 698                 memset(passwd, 0, sizeof(passwd));
 699                 errx(1, "failed to read password");
 700             }
 701             free(prompt);
 702         }
 703
 704         if (passwd[0]) {
 705             ret = krb5_init_creds_set_password(context, ctx, passwd);
 706             if (ret) {
 707                 krb5_warn(context, ret, "krb5_init_creds_set_password");
 708                 goto out;
 709             }
 710         }
 711     }
 712
 713     ret = krb5_init_creds_get(context, ctx);
 714
 715 #ifndef NO_NTLM
 716     if (ntlm_domain && passwd[0])
 717         heim_ntlm_nt_key(passwd, &ntlmkey);
 718 #endif
 719     memset_s(passwd, sizeof(passwd), 0, sizeof(passwd));
 720
 721     switch(ret){
 722     case 0:
 723         break;
 724     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 725         exit(1);
 726     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 727     case KRB5KRB_AP_ERR_MODIFIED:
 728     case KRB5KDC_ERR_PREAUTH_FAILED:
 729     case KRB5_GET_IN_TKT_LOOP:
 730         krb5_warnx(context, N_("Password incorrect", ""));
 731         goto out;
 732     case KRB5KRB_AP_ERR_V4_REPLY:
 733         krb5_warnx(context, N_("Looks like a Kerberos 4 reply", ""));
 734         goto out;
 735     case KRB5KDC_ERR_KEY_EXPIRED:
 736         krb5_warnx(context, N_("Password expired", ""));
 737         goto out;
 738     default:
 739         krb5_warn(context, ret, "krb5_get_init_creds");
 740         goto out;
 741     }
 742
 743     krb5_process_last_request(context, opt, ctx);
 744
 745     ret = krb5_init_creds_get_creds(context, ctx, &cred);
 746     if (ret) {
 747         krb5_warn(context, ret, "krb5_init_creds_get_creds");
 748         goto out;
 749     }
 750
 751     if (ticket_life != 0) {
 752         if (labs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 753             char life[64];
 754             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 755                                 life, sizeof(life));
 756             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 757         }
 758     }
 759     if (renew_life) {
 760         if (labs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 761             char life[64];
 762             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 763                                 life, sizeof(life));
 764             krb5_warnx(context,
 765                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 766                        life);
 767         }
 768     }
 769     krb5_free_cred_contents(context, &cred);
 770
 771     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 772                              NULL, &tempccache);
 773     if (ret) {
 774         krb5_warn(context, ret, "krb5_cc_new_unique");
 775         goto out;
 776     }
 777
 778     ret = krb5_init_creds_store(context, ctx, tempccache);
 779     if (ret) {
 780         krb5_warn(context, ret, "krb5_init_creds_store");
 781         goto out;
 782     }
 783
 784     krb5_init_creds_free(context, ctx);
 785     ctx = NULL;
 786
 787     ret = krb5_cc_move(context, tempccache, ccache);
 788     if (ret) {
 789         krb5_warn(context, ret, "krb5_cc_move");
 790         goto out;
 791     }
 792     tempccache = NULL;
 793
 794     if (switch_cache_flags)
 795         krb5_cc_switch(context, ccache);
 796
 797 #ifndef NO_NTLM
 798     if (ntlm_domain && ntlmkey.data)
 799         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 800 #endif
 801
 802     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 803         unsigned char d = 0;
 804         krb5_data data;
 805
 806         if (ok_as_delegate_flag || windows_flag)
 807             d |= 1;
 808         if (use_referrals_flag || windows_flag)
 809             d |= 2;
 810
 811         data.length = 1;
 812         data.data = &d;
 813
 814         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 815     }
 816
 817     if (anonymous_pkinit) {
 818         krb5_data data;
 819
 820         data.length = strlen(principal->realm);
 821         data.data = principal->realm;
 822
 823         krb5_cc_set_config(context, ccache, NULL, "anon_pkinit_realm", &data);
 824     }
 825
 826 out:
 827     krb5_get_init_creds_opt_free(context, opt);
 828     if (ctx)
 829         krb5_init_creds_free(context, ctx);
 830     if (tempccache)
 831         krb5_cc_destroy(context, tempccache);
 832
 833     if (enctype)
 834         free(enctype);
 835
 836     return ret;
 837 }
 838
 839 static time_t
 840 ticket_lifetime(krb5_context context, krb5_ccache cache, krb5_principal client,
 841                 const char *server, time_t *renew)
 842 {
 843     krb5_creds in_cred, *cred;
 844     krb5_error_code ret;
 845     time_t timeout;
 846     time_t curtime;
 847
 848     memset(&in_cred, 0, sizeof(in_cred));
 849
 850     if (renew != NULL)
 851         *renew = 0;
 852
 853     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 854     if (ret) {
 855         krb5_warn(context, ret, "krb5_cc_get_principal");
 856         return 0;
 857     }
 858     ret = get_server(context, in_cred.client, server, &in_cred.server);
 859     if (ret) {
 860         krb5_free_principal(context, in_cred.client);
 861         krb5_warn(context, ret, "get_server");
 862         return 0;
 863     }
 864
 865     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 866                                cache, &in_cred, &cred);
 867     krb5_free_principal(context, in_cred.client);
 868     krb5_free_principal(context, in_cred.server);
 869     if (ret) {
 870         krb5_warn(context, ret, "krb5_get_credentials");
 871         return 0;
 872     }
 873     curtime = time(NULL);
 874     timeout = cred->times.endtime - curtime;
 875     if (timeout < 0)
 876         timeout = 0;
 877     if (renew) {
 878         *renew = cred->times.renew_till - curtime;
 879         if (*renew < 0)
 880             *renew = 0;
 881     }
 882     krb5_free_creds(context, cred);
 883     return timeout;
 884 }
 885
 886 static time_t expire;
 887
 888 static char siginfo_msg[1024] = "No credentials\n";
 889
 890 static void
 891 update_siginfo_msg(time_t exp, const char *srv)
 892 {
 893     /* Note that exp is relative time */
 894     memset(siginfo_msg, 0, sizeof(siginfo_msg));
 895     memcpy(&siginfo_msg, "Updating...\n", sizeof("Updating...\n"));
 896     if (exp) {
 897         if (srv == NULL) {
 898             snprintf(siginfo_msg, sizeof(siginfo_msg),
 899                      N_("kinit: TGT expires in %llu seconds\n", ""),
 900                      (unsigned long long)expire);
 901         } else {
 902             snprintf(siginfo_msg, sizeof(siginfo_msg),
 903                      N_("kinit: Ticket for %s expired\n", ""), srv);
 904         }
 905         return;
 906     }
 907
 908     /* Expired creds */
 909     if (srv == NULL) {
 910         snprintf(siginfo_msg, sizeof(siginfo_msg),
 911                  N_("kinit: TGT expired\n", ""));
 912     } else {
 913         snprintf(siginfo_msg, sizeof(siginfo_msg),
 914                  N_("kinit: Ticket for %s expired\n", ""), srv);
 915     }
 916 }
 917
 918 #ifdef HAVE_SIGACTION
 919 static void
 920 handle_siginfo(int sig)
 921 {
 922     struct iovec iov[2];
 923
 924     iov[0].iov_base = rk_UNCONST(siginfo_msg);
 925     iov[0].iov_len = strlen(siginfo_msg);
 926     iov[1].iov_base = "\n";
 927     iov[1].iov_len = 1;
 928
 929     writev(STDERR_FILENO, iov, sizeof(iov)/sizeof(iov[0]));
 930 }
 931 #endif
 932
 933 struct renew_ctx {
 934     krb5_context context;
 935     krb5_ccache  ccache;
 936     krb5_principal principal;
 937     krb5_deltat ticket_life;
 938     krb5_deltat timeout;
 939 };
 940
 941 static time_t
 942 renew_func(void *ptr)
 943 {
 944     krb5_error_code ret;
 945     struct renew_ctx *ctx = ptr;
 946     time_t renew_expire;
 947     static time_t exp_delay = 1;
 948
 949     /*
 950      * NOTE: We count on the ccache implementation to notice changes to the
 951      * actual ccache filesystem/whatever objects.  There should be no ccache
 952      * types for which this is not the case, but it might not hurt to
 953      * re-krb5_cc_resolve() after each successful renew_validate()/
 954      * get_new_tickets() call.
 955      */
 956
 957     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 958                              server_str, &renew_expire);
 959
 960     /*
 961      * When a keytab is available to obtain new tickets, if we are within
 962      * half of the original ticket lifetime of the renew limit, get a new
 963      * TGT instead of renewing the existing TGT.  Note, ctx->ticket_life
 964      * is zero by default (without a '-l' option) and cannot be used to
 965      * set the time scale on which we decide whether we're "close to the
 966      * renew limit".
 967      */
 968     if (use_keytab || keytab_str)
 969         expire += ctx->timeout;
 970     if (renew_expire > expire) {
 971         ret = renew_validate(ctx->context, 1, validate_flag, ctx->ccache,
 972                        server_str, ctx->ticket_life);
 973     } else {
 974         ret = get_new_tickets(ctx->context, ctx->principal, ctx->ccache,
 975                               ctx->ticket_life, 0, 0);
 976     }
 977     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 978                              server_str, &renew_expire);
 979
 980 #ifndef NO_AFS
 981     if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
 982         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 983 #endif
 984
 985     update_siginfo_msg(expire, server_str);
 986
 987     /*
 988      * If our tickets have expired and we been able to either renew them
 989      * or obtain new tickets, then we still call this function but we use
 990      * an exponential backoff.  This should take care of the case where
 991      * we are using stored credentials but the KDC has been unavailable
 992      * for some reason...
 993      */
 994
 995     if (expire < 1) {
 996         /*
 997          * We can't ask to keep spamming stderr but not syslog, so we warn
 998          * only once.
 999          */
1000         if (exp_delay == 1) {
1001             krb5_warnx(ctx->context, N_("NOTICE: Could not renew/refresh "
1002                                         "tickets", ""));
1003         }
1004         if (exp_delay < 7200)
1005             exp_delay += exp_delay / 2 + 1;
1006         return exp_delay;
1007     }
1008     exp_delay = 1;
1009
1010     return expire / 2 + 1;
1011 }
1012
1013 static void
1014 set_princ_realm(krb5_context context,
1015                 krb5_principal principal,
1016                 const char *realm)
1017 {
1018     krb5_error_code ret;
1019
1020     if ((ret = krb5_principal_set_realm(context, principal, realm)) != 0)
1021         krb5_err(context, 1, ret, "krb5_principal_set_realm");
1022 }
1023
1024 static void
1025 parse_name_realm(krb5_context context,
1026                  const char *name,
1027                  int flags,
1028                  const char *realm,
1029                  krb5_principal *princ)
1030 {
1031     krb5_error_code ret;
1032
1033     if (realm)
1034         flags |= KRB5_PRINCIPAL_PARSE_NO_DEF_REALM;
1035     if ((ret = krb5_parse_name_flags(context, name, flags, princ)) != 0)
1036         krb5_err(context, 1, ret, "krb5_parse_name_flags");
1037     if (realm && krb5_principal_get_realm(context, *princ) == NULL)
1038         set_princ_realm(context, *princ, realm);
1039 }
1040
1041 static char *
1042 get_default_realm(krb5_context context)
1043 {
1044     char *realm;
1045     krb5_error_code ret;
1046
1047     if ((ret = krb5_get_default_realm(context, &realm)) != 0)
1048         krb5_err(context, 1, ret, "krb5_get_default_realm");
1049     return realm;
1050 }
1051
1052 static void
1053 get_default_principal(krb5_context context, krb5_principal *princ)
1054 {
1055     krb5_error_code ret;
1056
1057     if ((ret = krb5_get_default_principal(context, princ)) != 0)
1058         krb5_err(context, 1, ret, "krb5_get_default_principal");
1059 }
1060
1061 static char *
1062 get_user_realm(krb5_context context)
1063 {
1064     krb5_error_code ret;
1065     char *user_realm = NULL;
1066
1067     /*
1068      * If memory allocation fails, we don't try to use the wrong realm,
1069      * that will trigger misleading error messages complicate support.
1070      */
1071     krb5_appdefault_string(context, "kinit", NULL, "user_realm", "",
1072                            &user_realm);
1073     if (user_realm == NULL) {
1074         ret = krb5_enomem(context);
1075         krb5_err(context, 1, ret, "krb5_appdefault_string");
1076     }
1077
1078     if (*user_realm == 0) {
1079         free(user_realm);
1080         user_realm = NULL;
1081     }
1082
1083     return user_realm;
1084 }
1085
1086 static void
1087 get_princ(krb5_context context, krb5_principal *principal, const char *name)
1088 {
1089     krb5_error_code ret;
1090     krb5_principal tmp;
1091     int parseflags = 0;
1092     char *user_realm;
1093
1094     if (name == NULL) {
1095         krb5_ccache ccache;
1096
1097         /* If credential cache provides a client principal, use that. */
1098         if (krb5_cc_default(context, &ccache) == 0) {
1099             ret = krb5_cc_get_principal(context, ccache, principal);
1100             krb5_cc_close(context, ccache);
1101             if (ret == 0)
1102                 return;
1103         }
1104     }
1105
1106     user_realm = get_user_realm(context);
1107
1108     if (name) {
1109         if (enterprise_flag)
1110             parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
1111
1112         parse_name_realm(context, name, parseflags, user_realm, &tmp);
1113
1114         if (user_realm && krb5_principal_get_num_comp(context, tmp) > 1) {
1115             /* Principal is instance qualified, reparse with default realm. */
1116             krb5_free_principal(context, tmp);
1117             parse_name_realm(context, name, parseflags, NULL, principal);
1118         } else {
1119             *principal = tmp;
1120         }
1121     } else {
1122         get_default_principal(context, principal);
1123         if (user_realm)
1124             set_princ_realm(context, *principal, user_realm);
1125     }
1126
1127     if (user_realm)
1128         free(user_realm);
1129 }
1130
1131 static void
1132 get_princ_kt(krb5_context context,
1133              krb5_principal *principal,
1134              char *name)
1135 {
1136     krb5_error_code ret;
1137     krb5_principal tmp;
1138     krb5_ccache ccache;
1139     krb5_kt_cursor cursor;
1140     krb5_keytab_entry entry;
1141     char *def_realm;
1142
1143     if (name == NULL) {
1144         /*
1145          * If the credential cache exists and specifies a client principal,
1146          * use that.
1147          */
1148         if (krb5_cc_default(context, &ccache) == 0) {
1149             ret = krb5_cc_get_principal(context, ccache, principal);
1150             krb5_cc_close(context, ccache);
1151             if (ret == 0)
1152                 return;
1153         }
1154     }
1155
1156     if (name) {
1157         /* If the principal specifies an explicit realm, just use that. */
1158         int parseflags = KRB5_PRINCIPAL_PARSE_NO_DEF_REALM;
1159
1160         parse_name_realm(context, name, parseflags, NULL, &tmp);
1161         if (krb5_principal_get_realm(context, tmp) != NULL) {
1162             *principal = tmp;
1163             return;
1164         }
1165     } else {
1166         /* Otherwise, search keytab for bare name of the default principal. */
1167         get_default_principal(context, &tmp);
1168         set_princ_realm(context, tmp, NULL);
1169     }
1170
1171     def_realm = get_default_realm(context);
1172
1173     ret = krb5_kt_start_seq_get(context, kt, &cursor);
1174     if (ret)
1175         krb5_err(context, 1, ret, "krb5_kt_start_seq_get");
1176
1177     while (ret == 0 &&
1178            krb5_kt_next_entry(context, kt, &entry, &cursor) == 0) {
1179         const char *realm;
1180
1181         if (!krb5_principal_compare_any_realm(context, tmp, entry.principal))
1182             continue;
1183         if (*principal &&
1184             krb5_principal_compare(context, *principal, entry.principal))
1185             continue;
1186         /* The default realm takes precedence */
1187         realm = krb5_principal_get_realm(context, entry.principal);
1188         if (*principal && strcmp(def_realm, realm) == 0) {
1189             krb5_free_principal(context, *principal);
1190             ret = krb5_copy_principal(context, entry.principal, principal);
1191             break;
1192         }
1193         if (!*principal)
1194             ret = krb5_copy_principal(context, entry.principal, principal);
1195     }
1196     if (ret != 0 || (ret = krb5_kt_end_seq_get(context, kt, &cursor)) != 0)
1197         krb5_err(context, 1, ret, "get_princ_kt");
1198     if (!*principal) {
1199         if (name)
1200             parse_name_realm(context, name, 0, NULL, principal);
1201         else
1202             krb5_err(context, 1, KRB5_CC_NOTFOUND, "get_princ_kt");
1203     }
1204
1205     krb5_free_principal(context, tmp);
1206     free(def_realm);
1207 }
1208
1209 static krb5_error_code
1210 get_switched_ccache(krb5_context context,
1211                     const char * type,
1212                     krb5_principal principal,
1213                     krb5_ccache *ccache)
1214 {
1215     krb5_error_code ret;
1216
1217 #ifdef _WIN32
1218     if (strcmp(type, "API") == 0) {
1219         /*
1220          * Windows stores the default ccache name in the
1221          * registry which is shared across multiple logon
1222          * sessions for the same user.  The API credential
1223          * cache provides a unique name space per logon
1224          * session.  Therefore there is no need to generate
1225          * a unique ccache name.  Instead use the principal
1226          * name.  This provides a friendlier user experience.
1227          */
1228         char * unparsed_name;
1229         char * cred_cache;
1230
1231         ret = krb5_unparse_name(context, principal,
1232                                 &unparsed_name);
1233         if (ret)
1234             krb5_err(context, 1, ret,
1235                      N_("unparsing principal name", ""));
1236
1237         ret = asprintf(&cred_cache, "API:%s", unparsed_name);
1238         krb5_free_unparsed_name(context, unparsed_name);
1239         if (ret == -1 || cred_cache == NULL)
1240             krb5_err(context, 1, ret,
1241                       N_("building credential cache name", ""));
1242
1243         ret = krb5_cc_resolve(context, cred_cache, ccache);
1244         free(cred_cache);
1245     } else if (strcmp(type, "MSLSA") == 0) {
1246         /*
1247          * The Windows MSLSA cache when it is writeable
1248          * stores tickets for multiple client principals
1249          * in a single credential cache.
1250          */
1251         ret = krb5_cc_resolve(context, "MSLSA:", ccache);
1252     } else {
1253         ret = krb5_cc_new_unique(context, type, NULL, ccache);
1254     }
1255 #else /* !_WIN32 */
1256     ret = krb5_cc_new_unique(context, type, NULL, ccache);
1257 #endif /* _WIN32 */
1258
1259     return ret;
1260 }
1261
1262 int
1263 main(int argc, char **argv)
1264 {
1265     krb5_error_code ret;
1266     krb5_context context;
1267     krb5_ccache  ccache;
1268     krb5_principal principal = NULL;
1269     int optidx = 0;
1270     krb5_deltat ticket_life = 0;
1271 #ifdef HAVE_SIGACTION
1272     struct sigaction sa;
1273 #endif
1274     krb5_boolean unique_ccache = FALSE;
1275     int anonymous_pkinit = FALSE;
1276
1277     setprogname(argv[0]);
1278
1279     setlocale(LC_ALL, "");
1280     bindtextdomain("heimdal_kuser", HEIMDAL_LOCALEDIR);
1281     textdomain("heimdal_kuser");
1282
1283     ret = krb5_init_context(&context);
1284     if (ret == KRB5_CONFIG_BADFORMAT)
1285         errx(1, "krb5_init_context failed to parse configuration file");
1286     else if (ret)
1287         errx(1, "krb5_init_context failed: %d", ret);
1288
1289     if (getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
1290         usage(1);
1291
1292     if (help_flag)
1293         usage(0);
1294
1295     if (version_flag) {
1296         print_version(NULL);
1297         exit(0);
1298     }
1299
1300     argc -= optidx;
1301     argv += optidx;
1302
1303     /*
1304      * Open the keytab now, we use the keytab to determine the principal's
1305      * realm when the requested principal has no realm.
1306      */
1307     if (use_keytab || keytab_str) {
1308         if (keytab_str)
1309             ret = krb5_kt_resolve(context, keytab_str, &kt);
1310         else
1311             ret = krb5_kt_default(context, &kt);
1312         if (ret)
1313             krb5_err(context, 1, ret, "resolving keytab");
1314     }
1315
1316     if (pk_enterprise_flag) {
1317         ret = krb5_pk_enterprise_cert(context, pk_user_id,
1318                                       argv[0], &principal,
1319                                       &ent_user_id);
1320         if (ret)
1321             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
1322
1323         pk_user_id = NULL;
1324
1325     } else if (anonymous_flag && argc && argv[0][0] == '@') {
1326         /* If principal argument as @REALM, try anonymous PKINIT */
1327
1328         ret = krb5_make_principal(context, &principal, &argv[0][1],
1329                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
1330                                   NULL);
1331         if (ret)
1332             krb5_err(context, 1, ret, "krb5_make_principal");
1333         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
1334         anonymous_pkinit = TRUE;
1335     } else if (use_keytab || keytab_str) {
1336         get_princ_kt(context, &principal, argv[0]);
1337     } else {
1338         get_princ(context, &principal, argv[0]);
1339     }
1340
1341     if (fcache_version)
1342         krb5_set_fcache_version(context, fcache_version);
1343
1344     if (renewable_flag == -1)
1345         /* this seems somewhat pointless, but whatever */
1346         krb5_appdefault_boolean(context, "kinit",
1347                                 krb5_principal_get_realm(context, principal),
1348                                 "renewable", FALSE, &renewable_flag);
1349     if (do_afslog == -1)
1350         krb5_appdefault_boolean(context, "kinit",
1351                                 krb5_principal_get_realm(context, principal),
1352                                 "afslog", TRUE, &do_afslog);
1353
1354     if (cred_cache)
1355         ret = krb5_cc_resolve(context, cred_cache, &ccache);
1356     else {
1357         if (argc > 1) {
1358             char s[1024];
1359             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
1360             if (ret)
1361                 krb5_err(context, 1, ret, "creating cred cache");
1362             snprintf(s, sizeof(s), "%s:%s",
1363                      krb5_cc_get_type(context, ccache),
1364                      krb5_cc_get_name(context, ccache));
1365             setenv("KRB5CCNAME", s, 1);
1366             unique_ccache = TRUE;
1367         } else {
1368             ret = krb5_cc_cache_match(context, principal, &ccache);
1369             if (ret) {
1370                 const char *type;
1371                 ret = krb5_cc_default(context, &ccache);
1372                 if (ret)
1373                     krb5_err(context, 1, ret,
1374                              N_("resolving credentials cache", ""));
1375
1376                 /*
1377                  * Check if the type support switching, and we do,
1378                  * then do that instead over overwriting the current
1379                  * default credential
1380                  */
1381                 type = krb5_cc_get_type(context, ccache);
1382                 if (krb5_cc_support_switch(context, type)) {
1383                     krb5_cc_close(context, ccache);
1384                     ret = get_switched_ccache(context, type, principal,
1385                                               &ccache);
1386                     if (ret == 0)
1387                         unique_ccache = TRUE;
1388                 }
1389             }
1390         }
1391     }
1392     if (ret)
1393         krb5_err(context, 1, ret, N_("resolving credentials cache", ""));
1394
1395 #ifndef NO_AFS
1396     if (argc > 1 && k_hasafs())
1397         k_setpag();
1398 #endif
1399
1400     if (lifetime) {
1401         int tmp = parse_time(lifetime, "s");
1402         if (tmp < 0)
1403             errx(1, N_("unparsable time: %s", ""), lifetime);
1404
1405         ticket_life = tmp;
1406     }
1407
1408     if (addrs_flag == 0 && extra_addresses.num_strings > 0)
1409         krb5_errx(context, 1,
1410                   N_("specifying both extra addresses and "
1411                      "no addresses makes no sense", ""));
1412     {
1413         int i;
1414         krb5_addresses addresses;
1415         memset(&addresses, 0, sizeof(addresses));
1416         for(i = 0; i < extra_addresses.num_strings; i++) {
1417             ret = krb5_parse_address(context, extra_addresses.strings[i],
1418                                      &addresses);
1419             if (ret == 0) {
1420                 krb5_add_extra_addresses(context, &addresses);
1421                 krb5_free_addresses(context, &addresses);
1422             }
1423         }
1424         free_getarg_strings(&extra_addresses);
1425     }
1426
1427     if (renew_flag || validate_flag) {
1428         ret = renew_validate(context, renew_flag, validate_flag,
1429                              ccache, server_str, ticket_life);
1430
1431 #ifndef NO_AFS
1432         if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
1433             krb5_afslog(context, ccache, NULL, NULL);
1434 #endif
1435
1436         if (unique_ccache)
1437             krb5_cc_destroy(context, ccache);
1438         exit(ret != 0);
1439     }
1440
1441     ret = get_new_tickets(context, principal, ccache, ticket_life,
1442                           1, anonymous_pkinit);
1443     if (ret) {
1444         if (unique_ccache)
1445             krb5_cc_destroy(context, ccache);
1446         exit(1);
1447     }
1448
1449 #ifndef NO_AFS
1450     if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
1451         krb5_afslog(context, ccache, NULL, NULL);
1452 #endif
1453
1454     if (argc > 1) {
1455         struct renew_ctx ctx;
1456         time_t timeout;
1457
1458         timeout = ticket_lifetime(context, ccache, principal,
1459                                   server_str, NULL) / 2;
1460
1461         ctx.context = context;
1462         ctx.ccache = ccache;
1463         ctx.principal = principal;
1464         ctx.ticket_life = ticket_life;
1465         ctx.timeout = timeout;
1466
1467 #ifdef HAVE_SIGACTION
1468         memset(&sa, 0, sizeof(sa));
1469         sigemptyset(&sa.sa_mask);
1470         sa.sa_handler = handle_siginfo;
1471
1472         sigaction(SIGINFO, &sa, NULL);
1473 #endif
1474
1475         ret = simple_execvp_timed(argv[1], argv+1,
1476                                   renew_func, &ctx, timeout);
1477 #define EX_NOEXEC       126
1478 #define EX_NOTFOUND     127
1479         if (ret == EX_NOEXEC)
1480             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
1481         else if (ret == EX_NOTFOUND)
1482             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
1483
1484         krb5_cc_destroy(context, ccache);
1485 #ifndef NO_AFS
1486         if (k_hasafs())
1487             k_unlog();
1488 #endif
1489     } else {
1490         krb5_cc_close(context, ccache);
1491         ret = 0;
1492     }
1493     krb5_free_principal(context, principal);
1494     if (kt)
1495         krb5_kt_close(context, kt);
1496     krb5_free_context(context);
1497     return ret;
1498 }