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 HEIMDAL_SMALLER
  43 #include "krb5-v4compat.h"
  44 #endif
  45
  46 struct krb5_dh_moduli;
  47 struct AlgorithmIdentifier;
  48 struct _krb5_krb_auth_data;
  49 struct hx509_certs_data;
  50 #include <krb5-private.h>
  51
  52 #ifndef NO_NTLM
  53 #include "heimntlm.h"
  54 #endif
  55
  56 int forwardable_flag    = -1;
  57 int proxiable_flag      = -1;
  58 int renewable_flag      = -1;
  59 int renew_flag          = 0;
  60 int pac_flag            = -1;
  61 int validate_flag       = 0;
  62 int version_flag        = 0;
  63 int help_flag           = 0;
  64 int addrs_flag          = -1;
  65 struct getarg_strings extra_addresses;
  66 int anonymous_flag      = 0;
  67 char *lifetime          = NULL;
  68 char *renew_life        = NULL;
  69 char *server_str        = NULL;
  70 char *cred_cache        = NULL;
  71 char *start_str         = NULL;
  72 static int switch_cache_flags = 1;
  73 struct getarg_strings etype_str;
  74 int use_keytab          = 0;
  75 char *keytab_str        = NULL;
  76 int do_afslog           = -1;
  77 #ifndef HEIMDAL_SMALLER
  78 int get_v4_tgt          = -1;
  79 int convert_524         = 0;
  80 static char *krb4_cc_name;
  81 #endif
  82 int fcache_version;
  83 char *password_file     = NULL;
  84 char *pk_user_id        = NULL;
  85 int pk_enterprise_flag = 0;
  86 struct hx509_certs_data *ent_user_id = NULL;
  87 char *pk_x509_anchors   = NULL;
  88 int pk_use_enckey       = 0;
  89 static int canonicalize_flag = 0;
  90 static int enterprise_flag = 0;
  91 static int ok_as_delegate_flag = 0;
  92 static int use_referrals_flag = 0;
  93 static int windows_flag = 0;
  94 #ifndef NO_NTLM
  95 static char *ntlm_domain;
  96 #endif
  97
  98
  99 static struct getargs args[] = {
 100     /*
 101      * used by MIT
 102      * a: ~A
 103      * V: verbose
 104      * F: ~f
 105      * P: ~p
 106      * C: v4 cache name?
 107      * 5:
 108      */
 109 #ifndef HEIMDAL_SMALLER
 110     { "524init",        '4', arg_flag, &get_v4_tgt,
 111       NP_("obtain version 4 TGT", "") },
 112
 113     { "524convert",     '9', arg_flag, &convert_524,
 114       NP_("only convert ticket to version 4", "") },
 115 #endif
 116     { "afslog",         0  , arg_flag, &do_afslog,
 117       NP_("obtain afs tokens", "")  },
 118
 119     { "cache",          'c', arg_string, &cred_cache,
 120       NP_("credentials cache", ""), "cachename" },
 121
 122     { "forwardable",    'f', arg_negative_flag, &forwardable_flag,
 123       NP_("get forwardable tickets", "")},
 124
 125     { "keytab",         't', arg_string, &keytab_str,
 126       NP_("keytab to use", ""), "keytabname" },
 127
 128     { "lifetime",       'l', arg_string, &lifetime,
 129       NP_("lifetime of tickets", ""), "time"},
 130
 131     { "proxiable",      'p', arg_flag, &proxiable_flag,
 132       NP_("get proxiable tickets", "") },
 133
 134     { "renew",          'R', arg_flag, &renew_flag,
 135       NP_("renew TGT", "") },
 136
 137     { "renewable",      0,   arg_flag, &renewable_flag,
 138       NP_("get renewable tickets", "") },
 139
 140     { "renewable-life", 'r', arg_string, &renew_life,
 141       NP_("renewable lifetime of tickets", ""), "time" },
 142
 143     { "server",         'S', arg_string, &server_str,
 144       NP_("server to get ticket for", ""), "principal" },
 145
 146     { "start-time",     's', arg_string, &start_str,
 147       NP_("when ticket gets valid", ""), "time" },
 148
 149     { "use-keytab",     'k', arg_flag, &use_keytab,
 150       NP_("get key from keytab", "") },
 151
 152     { "validate",       'v', arg_flag, &validate_flag,
 153       NP_("validate TGT", "") },
 154
 155     { "enctypes",       'e', arg_strings, &etype_str,
 156       NP_("encryption types to use", ""), "enctypes" },
 157
 158     { "fcache-version", 0,   arg_integer, &fcache_version,
 159       NP_("file cache version to create", "") },
 160
 161     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 162       NP_("request a ticket with no addresses", "") },
 163
 164     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 165       NP_("include these extra addresses", ""), "addresses" },
 166
 167     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 168       NP_("request an anonymous ticket", "") },
 169
 170     { "request-pac",    0,   arg_flag,  &pac_flag,
 171       NP_("request a Windows PAC", "") },
 172
 173     { "password-file",  0,   arg_string, &password_file,
 174       NP_("read the password from a file", "") },
 175
 176     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 177       NP_("canonicalize client principal", "") },
 178
 179     { "enterprise",0,   arg_flag, &enterprise_flag,
 180       NP_("parse principal as a KRB5-NT-ENTERPRISE name", "") },
 181 #ifdef PKINIT
 182     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 183       NP_("use enterprise name from certificate", "") },
 184
 185     { "pk-user",        'C',    arg_string,     &pk_user_id,
 186       NP_("principal's public/private/certificate identifier", ""), "id" },
 187
 188     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 189       NP_("directory with CA certificates", ""), "directory" },
 190
 191     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 192       NP_("Use RSA encrypted reply (instead of DH)", "") },
 193 #endif
 194 #ifndef NO_NTLM
 195     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 196       NP_("NTLM domain", ""), "domain" },
 197 #endif
 198
 199     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 200       NP_("switch the default cache to the new credentials cache", "") },
 201
 202     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 203       NP_("honor ok-as-delegate on tickets", "") },
 204
 205     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 206       NP_("only use referrals, no dns canalisation", "") },
 207
 208     { "windows",        0,  arg_flag, &windows_flag,
 209       NP_("get windows behavior", "") },
 210
 211     { "version",        0,   arg_flag, &version_flag },
 212     { "help",           0,   arg_flag, &help_flag }
 213 };
 214
 215 static void
 216 usage (int ret)
 217 {
 218     arg_printusage_i18n (args,
 219                          sizeof(args)/sizeof(*args),
 220                          N_("Usage: ", ""),
 221                          NULL,
 222                          "[principal [command]]",
 223                          getarg_i18n);
 224     exit (ret);
 225 }
 226
 227 static krb5_error_code
 228 get_server(krb5_context context,
 229            krb5_principal client,
 230            const char *server,
 231            krb5_principal *princ)
 232 {
 233     krb5_const_realm realm;
 234     if(server)
 235         return krb5_parse_name(context, server, princ);
 236
 237     realm = krb5_principal_get_realm(context, client);
 238     return krb5_make_principal(context, princ, realm,
 239                                KRB5_TGS_NAME, realm, NULL);
 240 }
 241
 242 #ifndef HEIMDAL_SMALLER
 243
 244 static krb5_error_code
 245 do_524init(krb5_context context, krb5_ccache ccache,
 246            krb5_creds *creds, const char *server)
 247 {
 248     krb5_error_code ret;
 249
 250     struct credentials c;
 251     krb5_creds in_creds, *real_creds;
 252
 253     if(creds != NULL)
 254         real_creds = creds;
 255     else {
 256         krb5_principal client;
 257         ret = krb5_cc_get_principal(context, ccache, &client);
 258         if (ret) {
 259             krb5_warn(context, ret, "524init: can't get client principal");
 260             return ret;
 261         }
 262         memset(&in_creds, 0, sizeof(in_creds));
 263         ret = get_server(context, client, server, &in_creds.server);
 264         if(ret) {
 265             krb5_warn(context, ret, "524init: can't get server principal");
 266             krb5_free_principal(context, client);
 267             return ret;
 268         }
 269         in_creds.client = client;
 270         ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
 271         krb5_free_principal(context, client);
 272         krb5_free_principal(context, in_creds.server);
 273         if(ret)
 274             return ret;
 275     }
 276     ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
 277     if(ret)
 278         krb5_warn(context, ret, "converting creds");
 279     else {
 280         krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
 281         if(tret)
 282             krb5_warn(context, tret, "saving v4 creds");
 283     }
 284
 285     if(creds == NULL)
 286         krb5_free_creds(context, real_creds);
 287     memset(&c, 0, sizeof(c));
 288
 289     return ret;
 290 }
 291
 292 #endif
 293
 294 static int
 295 renew_validate(krb5_context context,
 296                int renew,
 297                int validate,
 298                krb5_ccache cache,
 299                const char *server,
 300                krb5_deltat life)
 301 {
 302     krb5_error_code ret;
 303     krb5_creds in, *out = NULL;
 304     krb5_kdc_flags flags;
 305
 306     memset(&in, 0, sizeof(in));
 307
 308     ret = krb5_cc_get_principal(context, cache, &in.client);
 309     if(ret) {
 310         krb5_warn(context, ret, "krb5_cc_get_principal");
 311         return ret;
 312     }
 313     ret = get_server(context, in.client, server, &in.server);
 314     if(ret) {
 315         krb5_warn(context, ret, "get_server");
 316         goto out;
 317     }
 318
 319     if (renew) {
 320         /*
 321          * no need to check the error here, it's only to be
 322          * friendly to the user
 323          */
 324         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 325     }
 326
 327     flags.i = 0;
 328     flags.b.renewable         = flags.b.renew = renew;
 329     flags.b.validate          = validate;
 330
 331     if (forwardable_flag != -1)
 332         flags.b.forwardable       = forwardable_flag;
 333     else if (out)
 334         flags.b.forwardable       = out->flags.b.forwardable;
 335
 336     if (proxiable_flag != -1)
 337         flags.b.proxiable         = proxiable_flag;
 338     else if (out)
 339         flags.b.proxiable         = out->flags.b.proxiable;
 340
 341     if (anonymous_flag)
 342         flags.b.request_anonymous = anonymous_flag;
 343     if(life)
 344         in.times.endtime = time(NULL) + life;
 345
 346     if (out) {
 347         krb5_free_creds (context, out);
 348         out = NULL;
 349     }
 350
 351
 352     ret = krb5_get_kdc_cred(context,
 353                             cache,
 354                             flags,
 355                             NULL,
 356                             NULL,
 357                             &in,
 358                             &out);
 359     if(ret) {
 360         krb5_warn(context, ret, "krb5_get_kdc_cred");
 361         goto out;
 362     }
 363     ret = krb5_cc_initialize(context, cache, in.client);
 364     if(ret) {
 365         krb5_free_creds (context, out);
 366         krb5_warn(context, ret, "krb5_cc_initialize");
 367         goto out;
 368     }
 369     ret = krb5_cc_store_cred(context, cache, out);
 370
 371     if(ret == 0 && server == NULL) {
 372         /* only do this if it's a general renew-my-tgt request */
 373 #ifndef HEIMDAL_SMALLER
 374         if(get_v4_tgt)
 375             do_524init(context, cache, out, NULL);
 376 #endif
 377 #ifndef NO_AFS
 378         if(do_afslog && k_hasafs())
 379             krb5_afslog(context, cache, NULL, NULL);
 380 #endif
 381     }
 382
 383     krb5_free_creds (context, out);
 384     if(ret) {
 385         krb5_warn(context, ret, "krb5_cc_store_cred");
 386         goto out;
 387     }
 388 out:
 389     krb5_free_cred_contents(context, &in);
 390     return ret;
 391 }
 392
 393 #ifndef NO_NTLM
 394
 395 static krb5_error_code
 396 store_ntlmkey(krb5_context context, krb5_ccache id,
 397               const char *domain, struct ntlm_buf *buf)
 398 {
 399     krb5_error_code ret;
 400     krb5_data data;
 401     char *name;
 402
 403     asprintf(&name, "ntlm-key-%s", domain);
 404     if (name == NULL) {
 405         krb5_clear_error_message(context);
 406         return ENOMEM;
 407     }
 408
 409     data.length = buf->length;
 410     data.data = buf->data;
 411
 412     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 413     free(name);
 414     return ret;
 415 }
 416 #endif
 417
 418 static krb5_error_code
 419 get_new_tickets(krb5_context context,
 420                 krb5_principal principal,
 421                 krb5_ccache ccache,
 422                 krb5_deltat ticket_life,
 423                 int interactive)
 424 {
 425     krb5_error_code ret;
 426     krb5_get_init_creds_opt *opt;
 427     krb5_creds cred;
 428     char passwd[256];
 429     krb5_deltat start_time = 0;
 430     krb5_deltat renew = 0;
 431     char *renewstr = NULL;
 432     krb5_enctype *enctype = NULL;
 433     krb5_ccache tempccache;
 434 #ifndef NO_NTLM
 435     struct ntlm_buf ntlmkey;
 436     memset(&ntlmkey, 0, sizeof(ntlmkey));
 437 #endif
 438     passwd[0] = '\0';
 439
 440     if (password_file) {
 441         FILE *f;
 442
 443         if (strcasecmp("STDIN", password_file) == 0)
 444             f = stdin;
 445         else
 446             f = fopen(password_file, "r");
 447         if (f == NULL)
 448             krb5_errx(context, 1, "Failed to open the password file %s",
 449                       password_file);
 450
 451         if (fgets(passwd, sizeof(passwd), f) == NULL)
 452             krb5_errx(context, 1,
 453                       N_("Failed to read password from file %s", ""),
 454                       password_file);
 455         if (f != stdin)
 456             fclose(f);
 457         passwd[strcspn(passwd, "\n")] = '\0';
 458     }
 459
 460 #ifdef __APPLE__
 461     if (passwd[0] == '\0') {
 462         const char *realm;
 463         OSStatus osret;
 464         UInt32 length;
 465         void *buffer;
 466         char *name;
 467
 468         realm = krb5_principal_get_realm(context, principal);
 469
 470         ret = krb5_unparse_name_flags(context, principal,
 471                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &name);
 472         if (ret)
 473             goto nopassword;
 474
 475         osret = SecKeychainFindGenericPassword(NULL, strlen(realm), realm,
 476                                                strlen(name), name,
 477                                                &length, &buffer, NULL);
 478         free(name);
 479         if (osret == noErr && length < sizeof(passwd) - 1) {
 480             memcpy(passwd, buffer, length);
 481             passwd[length] = '\0';
 482         }
 483     nopassword:
 484         do { } while(0);
 485     }
 486 #endif
 487
 488     memset(&cred, 0, sizeof(cred));
 489
 490     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 491     if (ret)
 492         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 493
 494     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 495         krb5_principal_get_realm(context, principal), opt);
 496
 497     if(forwardable_flag != -1)
 498         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 499     if(proxiable_flag != -1)
 500         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 501     if(anonymous_flag)
 502         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 503     if (pac_flag != -1)
 504         krb5_get_init_creds_opt_set_pac_request(context, opt,
 505                                                 pac_flag ? TRUE : FALSE);
 506     if (canonicalize_flag)
 507         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 508     if ((pk_enterprise_flag || enterprise_flag || canonicalize_flag) && windows_flag)
 509         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 510     if (pk_user_id || ent_user_id || anonymous_flag) {
 511         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 512                                                  principal,
 513                                                  pk_user_id,
 514                                                  pk_x509_anchors,
 515                                                  NULL,
 516                                                  NULL,
 517                                                  pk_use_enckey ? 2 : 0 |
 518                                                  anonymous_flag ? 4 : 0,
 519                                                  krb5_prompter_posix,
 520                                                  NULL,
 521                                                  passwd);
 522         if (ret)
 523             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 524         if (ent_user_id)
 525             _krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
 526     }
 527
 528     if (addrs_flag != -1)
 529         krb5_get_init_creds_opt_set_addressless(context, opt,
 530                                                 addrs_flag ? FALSE : TRUE);
 531
 532     if (renew_life == NULL && renewable_flag)
 533         renewstr = "1 month";
 534     if (renew_life)
 535         renewstr = renew_life;
 536     if (renewstr) {
 537         renew = parse_time (renewstr, "s");
 538         if (renew < 0)
 539             errx (1, "unparsable time: %s", renewstr);
 540
 541         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 542     }
 543
 544     if(ticket_life != 0)
 545         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 546
 547     if(start_str) {
 548         int tmp = parse_time (start_str, "s");
 549         if (tmp < 0)
 550             errx (1, N_("unparsable time: %s", ""), start_str);
 551
 552         start_time = tmp;
 553     }
 554
 555     if(etype_str.num_strings) {
 556         int i;
 557
 558         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 559         if(enctype == NULL)
 560             errx(1, "out of memory");
 561         for(i = 0; i < etype_str.num_strings; i++) {
 562             ret = krb5_string_to_enctype(context,
 563                                          etype_str.strings[i],
 564                                          &enctype[i]);
 565             if(ret)
 566                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 567         }
 568         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 569                                                etype_str.num_strings);
 570     }
 571
 572     if(use_keytab || keytab_str) {
 573         krb5_keytab kt;
 574         if(keytab_str)
 575             ret = krb5_kt_resolve(context, keytab_str, &kt);
 576         else
 577             ret = krb5_kt_default(context, &kt);
 578         if (ret)
 579             krb5_err (context, 1, ret, "resolving keytab");
 580         ret = krb5_get_init_creds_keytab (context,
 581                                           &cred,
 582                                           principal,
 583                                           kt,
 584                                           start_time,
 585                                           server_str,
 586                                           opt);
 587         krb5_kt_close(context, kt);
 588     } else if (pk_user_id || ent_user_id || anonymous_flag) {
 589         ret = krb5_get_init_creds_password (context,
 590                                             &cred,
 591                                             principal,
 592                                             passwd,
 593                                             krb5_prompter_posix,
 594                                             NULL,
 595                                             start_time,
 596                                             server_str,
 597                                             opt);
 598     } else if (!interactive) {
 599         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 600         krb5_get_init_creds_opt_free(context, opt);
 601         return 0;
 602     } else {
 603
 604         if (passwd[0] == '\0') {
 605             char *p, *prompt;
 606
 607             krb5_unparse_name (context, principal, &p);
 608             asprintf (&prompt, N_("%s's Password: ", ""), p);
 609             free (p);
 610
 611             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 612                 memset(passwd, 0, sizeof(passwd));
 613                 exit(1);
 614             }
 615             free (prompt);
 616         }
 617
 618
 619         ret = krb5_get_init_creds_password (context,
 620                                             &cred,
 621                                             principal,
 622                                             passwd,
 623                                             krb5_prompter_posix,
 624                                             NULL,
 625                                             start_time,
 626                                             server_str,
 627                                             opt);
 628     }
 629     krb5_get_init_creds_opt_free(context, opt);
 630 #ifndef NO_NTLM
 631     if (ntlm_domain && passwd[0])
 632         heim_ntlm_nt_key(passwd, &ntlmkey);
 633 #endif
 634     memset(passwd, 0, sizeof(passwd));
 635
 636     switch(ret){
 637     case 0:
 638         break;
 639     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 640         exit(1);
 641     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 642     case KRB5KRB_AP_ERR_MODIFIED:
 643     case KRB5KDC_ERR_PREAUTH_FAILED:
 644         krb5_errx(context, 1, N_("Password incorrect", ""));
 645         break;
 646     case KRB5KRB_AP_ERR_V4_REPLY:
 647         krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
 648         break;
 649     default:
 650         krb5_err(context, 1, ret, "krb5_get_init_creds");
 651     }
 652
 653     if(ticket_life != 0) {
 654         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 655             char life[64];
 656             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 657                                 life, sizeof(life));
 658             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 659         }
 660     }
 661     if(renew_life) {
 662         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 663             char life[64];
 664             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 665                                 life, sizeof(life));
 666             krb5_warnx(context,
 667                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 668                        life);
 669         }
 670     }
 671
 672     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 673                              NULL, &tempccache);
 674     if (ret)
 675         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 676
 677     ret = krb5_cc_initialize (context, tempccache, cred.client);
 678     if (ret)
 679         krb5_err (context, 1, ret, "krb5_cc_initialize");
 680
 681     ret = krb5_cc_store_cred (context, tempccache, &cred);
 682     if (ret)
 683         krb5_err (context, 1, ret, "krb5_cc_store_cred");
 684
 685     krb5_free_cred_contents (context, &cred);
 686
 687     ret = krb5_cc_move(context, tempccache, ccache);
 688     if (ret)
 689         krb5_err (context, 1, ret, "krb5_cc_move");
 690
 691     if (switch_cache_flags)
 692         krb5_cc_switch(context, ccache);
 693
 694 #ifndef NO_NTLM
 695     if (ntlm_domain && ntlmkey.data)
 696         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 697 #endif
 698
 699     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 700         unsigned char d = 0;
 701         krb5_data data;
 702
 703         if (ok_as_delegate_flag || windows_flag)
 704             d |= 1;
 705         if (use_referrals_flag || windows_flag)
 706             d |= 2;
 707
 708         data.length = 1;
 709         data.data = &d;
 710
 711         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 712     }
 713
 714
 715     if (enctype)
 716         free(enctype);
 717
 718     return 0;
 719 }
 720
 721 static time_t
 722 ticket_lifetime(krb5_context context, krb5_ccache cache,
 723                 krb5_principal client, const char *server)
 724 {
 725     krb5_creds in_cred, *cred;
 726     krb5_error_code ret;
 727     time_t timeout;
 728
 729     memset(&in_cred, 0, sizeof(in_cred));
 730
 731     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 732     if(ret) {
 733         krb5_warn(context, ret, "krb5_cc_get_principal");
 734         return 0;
 735     }
 736     ret = get_server(context, in_cred.client, server, &in_cred.server);
 737     if(ret) {
 738         krb5_free_principal(context, in_cred.client);
 739         krb5_warn(context, ret, "get_server");
 740         return 0;
 741     }
 742
 743     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 744                                cache, &in_cred, &cred);
 745     krb5_free_principal(context, in_cred.client);
 746     krb5_free_principal(context, in_cred.server);
 747     if(ret) {
 748         krb5_warn(context, ret, "krb5_get_credentials");
 749         return 0;
 750     }
 751     timeout = cred->times.endtime - cred->times.starttime;
 752     if (timeout < 0)
 753         timeout = 0;
 754     krb5_free_creds(context, cred);
 755     return timeout;
 756 }
 757
 758 struct renew_ctx {
 759     krb5_context context;
 760     krb5_ccache  ccache;
 761     krb5_principal principal;
 762     krb5_deltat ticket_life;
 763 };
 764
 765 static time_t
 766 renew_func(void *ptr)
 767 {
 768     struct renew_ctx *ctx = ptr;
 769     krb5_error_code ret;
 770     time_t expire;
 771     int new_tickets = 0;
 772
 773     if (renewable_flag) {
 774         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 775                              ctx->ccache, server_str, ctx->ticket_life);
 776         if (ret)
 777             new_tickets = 1;
 778     } else
 779         new_tickets = 1;
 780
 781     if (new_tickets)
 782         get_new_tickets(ctx->context, ctx->principal,
 783                         ctx->ccache, ctx->ticket_life, 0);
 784
 785 #ifndef HEIMDAL_SMALLER
 786     if(get_v4_tgt || convert_524)
 787         do_524init(ctx->context, ctx->ccache, NULL, server_str);
 788 #endif
 789 #ifndef NO_AFS
 790     if(do_afslog && k_hasafs())
 791         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 792 #endif
 793
 794     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 795                              server_str) / 2;
 796     return expire + 1;
 797 }
 798
 799 int
 800 main (int argc, char **argv)
 801 {
 802     krb5_error_code ret;
 803     krb5_context context;
 804     krb5_ccache  ccache;
 805     krb5_principal principal;
 806     int optidx = 0;
 807     krb5_deltat ticket_life = 0;
 808     int parseflags = 0;
 809
 810     setprogname (argv[0]);
 811
 812     setlocale (LC_ALL, "");
 813     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 814     textdomain("heimdal_kuser");
 815
 816     ret = krb5_init_context (&context);
 817     if (ret == KRB5_CONFIG_BADFORMAT)
 818         errx (1, "krb5_init_context failed to parse configuration file");
 819     else if (ret)
 820         errx(1, "krb5_init_context failed: %d", ret);
 821
 822     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 823         usage(1);
 824
 825     if (help_flag)
 826         usage (0);
 827
 828     if(version_flag) {
 829         print_version(NULL);
 830         exit(0);
 831     }
 832
 833     argc -= optidx;
 834     argv += optidx;
 835
 836     if (canonicalize_flag || enterprise_flag)
 837         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 838
 839     if (pk_enterprise_flag) {
 840         ret = _krb5_pk_enterprise_cert(context, pk_user_id,
 841                                        argv[0], &principal,
 842                                        &ent_user_id);
 843         if (ret)
 844             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
 845
 846         pk_user_id = NULL;
 847
 848     } else if (anonymous_flag) {
 849
 850         ret = krb5_make_principal(context, &principal, argv[0],
 851                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
 852                                   NULL);
 853         if (ret)
 854             krb5_err(context, 1, ret, "krb5_make_principal");
 855         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
 856
 857     } else {
 858         if (argv[0]) {
 859             ret = krb5_parse_name_flags (context, argv[0], parseflags,
 860                                          &principal);
 861             if (ret)
 862                 krb5_err (context, 1, ret, "krb5_parse_name");
 863         } else {
 864             ret = krb5_get_default_principal (context, &principal);
 865             if (ret)
 866                 krb5_err (context, 1, ret, "krb5_get_default_principal");
 867         }
 868     }
 869
 870     if(fcache_version)
 871         krb5_set_fcache_version(context, fcache_version);
 872
 873     if(renewable_flag == -1)
 874         /* this seems somewhat pointless, but whatever */
 875         krb5_appdefault_boolean(context, "kinit",
 876                                 krb5_principal_get_realm(context, principal),
 877                                 "renewable", FALSE, &renewable_flag);
 878 #ifndef HEIMDAL_SMALLER
 879     if(get_v4_tgt == -1)
 880         krb5_appdefault_boolean(context, "kinit",
 881                                 krb5_principal_get_realm(context, principal),
 882                                 "krb4_get_tickets", FALSE, &get_v4_tgt);
 883 #endif
 884     if(do_afslog == -1)
 885         krb5_appdefault_boolean(context, "kinit",
 886                                 krb5_principal_get_realm(context, principal),
 887                                 "afslog", TRUE, &do_afslog);
 888
 889     if(cred_cache)
 890         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 891     else {
 892         if(argc > 1) {
 893             char s[1024];
 894             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
 895             if(ret)
 896                 krb5_err(context, 1, ret, "creating cred cache");
 897             snprintf(s, sizeof(s), "%s:%s",
 898                      krb5_cc_get_type(context, ccache),
 899                      krb5_cc_get_name(context, ccache));
 900             setenv("KRB5CCNAME", s, 1);
 901 #ifndef HEIMDAL_SMALLER
 902             if (get_v4_tgt) {
 903                 int fd;
 904                 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
 905                     krb5_errx(context, 1, "out of memory");
 906                 if((fd = mkstemp(krb4_cc_name)) >= 0) {
 907                     close(fd);
 908                     setenv("KRBTKFILE", krb4_cc_name, 1);
 909                 } else {
 910                     free(krb4_cc_name);
 911                     krb4_cc_name = NULL;
 912                 }
 913             }
 914 #endif
 915         } else {
 916             ret = krb5_cc_cache_match(context, principal, &ccache);
 917             if (ret) {
 918                 const char *type;
 919                 ret = krb5_cc_default (context, &ccache);
 920                 if (ret)
 921                     krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 922
 923                 /*
 924                  * Check if the type support switching, and we do,
 925                  * then do that instead over overwriting the current
 926                  * default credential
 927                  */
 928                 type = krb5_cc_get_type(context, ccache);
 929                 if (krb5_cc_support_switch(context, type)) {
 930                     krb5_cc_close(context, ccache);
 931                     ret = krb5_cc_new_unique(context, type, NULL, &ccache);
 932                 }
 933             }
 934         }
 935     }
 936     if (ret)
 937         krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 938
 939 #ifndef NO_AFS
 940     if(argc > 1 && k_hasafs ())
 941         k_setpag();
 942 #endif
 943
 944     if (lifetime) {
 945         int tmp = parse_time (lifetime, "s");
 946         if (tmp < 0)
 947             errx (1, N_("unparsable time: %s", ""), lifetime);
 948
 949         ticket_life = tmp;
 950     }
 951
 952     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 953         krb5_errx(context, 1,
 954                   N_("specifying both extra addresses and "
 955                      "no addresses makes no sense", ""));
 956     {
 957         int i;
 958         krb5_addresses addresses;
 959         memset(&addresses, 0, sizeof(addresses));
 960         for(i = 0; i < extra_addresses.num_strings; i++) {
 961             ret = krb5_parse_address(context, extra_addresses.strings[i],
 962                                      &addresses);
 963             if (ret == 0) {
 964                 krb5_add_extra_addresses(context, &addresses);
 965                 krb5_free_addresses(context, &addresses);
 966             }
 967         }
 968         free_getarg_strings(&extra_addresses);
 969     }
 970
 971     if(renew_flag || validate_flag) {
 972         ret = renew_validate(context, renew_flag, validate_flag,
 973                              ccache, server_str, ticket_life);
 974         exit(ret != 0);
 975     }
 976
 977 #ifndef HEIMDAL_SMALLER
 978     if(!convert_524)
 979 #endif
 980         get_new_tickets(context, principal, ccache, ticket_life, 1);
 981
 982 #ifndef HEIMDAL_SMALLER
 983     if(get_v4_tgt || convert_524)
 984         do_524init(context, ccache, NULL, server_str);
 985 #endif
 986 #ifndef NO_AFS
 987     if(do_afslog && k_hasafs())
 988         krb5_afslog(context, ccache, NULL, NULL);
 989 #endif
 990     if(argc > 1) {
 991         struct renew_ctx ctx;
 992         time_t timeout;
 993
 994         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 995
 996         ctx.context = context;
 997         ctx.ccache = ccache;
 998         ctx.principal = principal;
 999         ctx.ticket_life = ticket_life;
1000
1001         ret = simple_execvp_timed(argv[1], argv+1,
1002                                   renew_func, &ctx, timeout);
1003 #define EX_NOEXEC       126
1004 #define EX_NOTFOUND     127
1005         if(ret == EX_NOEXEC)
1006             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
1007         else if(ret == EX_NOTFOUND)
1008             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
1009
1010         krb5_cc_destroy(context, ccache);
1011 #ifndef HEIMDAL_SMALLER
1012         _krb5_krb_dest_tkt(context, krb4_cc_name);
1013 #endif
1014 #ifndef NO_AFS
1015         if(k_hasafs())
1016             k_unlog();
1017 #endif
1018     } else {
1019         krb5_cc_close (context, ccache);
1020         ret = 0;
1021     }
1022     krb5_free_principal(context, principal);
1023     krb5_free_context (context);
1024     return ret;
1025 }