kuser/kinit.c

   1 /*
   2  * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kuser_locl.h"
  35
  36 #ifndef HEIMDAL_SMALLER
  37 #include "krb5-v4compat.h"
  38 #endif
  39
  40 struct krb5_dh_moduli;
  41 struct AlgorithmIdentifier;
  42 struct _krb5_krb_auth_data;
  43 struct hx509_certs_data;
  44 #include <krb5-private.h>
  45
  46 #ifndef NO_NTLM
  47 #include "heimntlm.h"
  48 #endif
  49
  50 int forwardable_flag    = -1;
  51 int proxiable_flag      = -1;
  52 int renewable_flag      = -1;
  53 int renew_flag          = 0;
  54 int pac_flag            = -1;
  55 int validate_flag       = 0;
  56 int version_flag        = 0;
  57 int help_flag           = 0;
  58 int addrs_flag          = -1;
  59 struct getarg_strings extra_addresses;
  60 int anonymous_flag      = 0;
  61 char *lifetime          = NULL;
  62 char *renew_life        = NULL;
  63 char *server_str        = NULL;
  64 char *cred_cache        = NULL;
  65 char *start_str         = NULL;
  66 static int switch_cache_flags = 1;
  67 struct getarg_strings etype_str;
  68 int use_keytab          = 0;
  69 char *keytab_str        = NULL;
  70 int do_afslog           = -1;
  71 #ifndef HEIMDAL_SMALLER
  72 int get_v4_tgt          = -1;
  73 int convert_524         = 0;
  74 static char *krb4_cc_name;
  75 #endif
  76 int fcache_version;
  77 char *password_file     = NULL;
  78 char *pk_user_id        = NULL;
  79 int pk_enterprise_flag = 0;
  80 struct hx509_certs_data *ent_user_id = NULL;
  81 char *pk_x509_anchors   = NULL;
  82 int pk_use_enckey       = 0;
  83 static int canonicalize_flag = 0;
  84 static int enterprise_flag = 0;
  85 static int ok_as_delegate_flag = 0;
  86 static int use_referrals_flag = 0;
  87 static int windows_flag = 0;
  88 #ifndef NO_NTLM
  89 static char *ntlm_domain;
  90 #endif
  91
  92
  93 static struct getargs args[] = {
  94     /*
  95      * used by MIT
  96      * a: ~A
  97      * V: verbose
  98      * F: ~f
  99      * P: ~p
 100      * C: v4 cache name?
 101      * 5:
 102      */
 103 #ifndef HEIMDAL_SMALLER
 104     { "524init",        '4', arg_flag, &get_v4_tgt,
 105       NP_("obtain version 4 TGT", "") },
 106
 107     { "524convert",     '9', arg_flag, &convert_524,
 108       NP_("only convert ticket to version 4", "") },
 109 #endif
 110     { "afslog",         0  , arg_flag, &do_afslog,
 111       NP_("obtain afs tokens", "")  },
 112
 113     { "cache",          'c', arg_string, &cred_cache,
 114       NP_("credentials cache", ""), "cachename" },
 115
 116     { "forwardable",    'f', arg_flag, &forwardable_flag,
 117       NP_("get forwardable tickets", "")},
 118
 119     { "keytab",         't', arg_string, &keytab_str,
 120       NP_("keytab to use", ""), "keytabname" },
 121
 122     { "lifetime",       'l', arg_string, &lifetime,
 123       NP_("lifetime of tickets", ""), "time"},
 124
 125     { "proxiable",      'p', arg_flag, &proxiable_flag,
 126       NP_("get proxiable tickets", "") },
 127
 128     { "renew",          'R', arg_flag, &renew_flag,
 129       NP_("renew TGT", "") },
 130
 131     { "renewable",      0,   arg_flag, &renewable_flag,
 132       NP_("get renewable tickets", "") },
 133
 134     { "renewable-life", 'r', arg_string, &renew_life,
 135       NP_("renewable lifetime of tickets", ""), "time" },
 136
 137     { "server",         'S', arg_string, &server_str,
 138       NP_("server to get ticket for", ""), "principal" },
 139
 140     { "start-time",     's', arg_string, &start_str,
 141       NP_("when ticket gets valid", ""), "time" },
 142
 143     { "use-keytab",     'k', arg_flag, &use_keytab,
 144       NP_("get key from keytab", "") },
 145
 146     { "validate",       'v', arg_flag, &validate_flag,
 147       NP_("validate TGT", "") },
 148
 149     { "enctypes",       'e', arg_strings, &etype_str,
 150       NP_("encryption types to use", ""), "enctypes" },
 151
 152     { "fcache-version", 0,   arg_integer, &fcache_version,
 153       NP_("file cache version to create", "") },
 154
 155     { "addresses",      'A',   arg_negative_flag,       &addrs_flag,
 156       NP_("request a ticket with no addresses", "") },
 157
 158     { "extra-addresses",'a', arg_strings,       &extra_addresses,
 159       NP_("include these extra addresses", ""), "addresses" },
 160
 161     { "anonymous",      0,   arg_flag,  &anonymous_flag,
 162       NP_("request an anonymous ticket", "") },
 163
 164     { "request-pac",    0,   arg_flag,  &pac_flag,
 165       NP_("request a Windows PAC", "") },
 166
 167     { "password-file",  0,   arg_string, &password_file,
 168       NP_("read the password from a file", "") },
 169
 170     { "canonicalize",0,   arg_flag, &canonicalize_flag,
 171       NP_("canonicalize client principal", "") },
 172
 173     { "enterprise",0,   arg_flag, &enterprise_flag,
 174       NP_("parse principal as a KRB5-NT-ENTERPRISE name", "") },
 175 #ifdef PKINIT
 176     { "pk-enterprise",  0,      arg_flag,       &pk_enterprise_flag,
 177       NP_("use enterprise name from certificate", "") },
 178
 179     { "pk-user",        'C',    arg_string,     &pk_user_id,
 180       NP_("principal's public/private/certificate identifier", ""), "id" },
 181
 182     { "x509-anchors",   'D',  arg_string, &pk_x509_anchors,
 183       NP_("directory with CA certificates", ""), "directory" },
 184
 185     { "pk-use-enckey",  0,  arg_flag, &pk_use_enckey,
 186       NP_("Use RSA encrypted reply (instead of DH)", "") },
 187 #endif
 188 #ifndef NO_NTLM
 189     { "ntlm-domain",    0,  arg_string, &ntlm_domain,
 190       NP_("NTLM domain", ""), "domain" },
 191 #endif
 192
 193     { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
 194       NP_("switch the default cache to the new credentials cache", "") },
 195
 196     { "ok-as-delegate", 0,  arg_flag, &ok_as_delegate_flag,
 197       NP_("honor ok-as-delegate on tickets", "") },
 198
 199     { "use-referrals",  0,  arg_flag, &use_referrals_flag,
 200       NP_("only use referrals, no dns canalisation", "") },
 201
 202     { "windows",        0,  arg_flag, &windows_flag,
 203       NP_("get windows behavior", "") },
 204
 205     { "version",        0,   arg_flag, &version_flag },
 206     { "help",           0,   arg_flag, &help_flag }
 207 };
 208
 209 static void
 210 usage (int ret)
 211 {
 212     arg_printusage_i18n (args,
 213                          sizeof(args)/sizeof(*args),
 214                          N_("Usage: ", ""),
 215                          NULL,
 216                          "[principal [command]]",
 217                          getarg_i18n);
 218     exit (ret);
 219 }
 220
 221 static krb5_error_code
 222 get_server(krb5_context context,
 223            krb5_principal client,
 224            const char *server,
 225            krb5_principal *princ)
 226 {
 227     krb5_const_realm realm;
 228     if(server)
 229         return krb5_parse_name(context, server, princ);
 230
 231     realm = krb5_principal_get_realm(context, client);
 232     return krb5_make_principal(context, princ, realm,
 233                                KRB5_TGS_NAME, realm, NULL);
 234 }
 235
 236 #ifndef HEIMDAL_SMALLER
 237
 238 static krb5_error_code
 239 do_524init(krb5_context context, krb5_ccache ccache,
 240            krb5_creds *creds, const char *server)
 241 {
 242     krb5_error_code ret;
 243
 244     struct credentials c;
 245     krb5_creds in_creds, *real_creds;
 246
 247     if(creds != NULL)
 248         real_creds = creds;
 249     else {
 250         krb5_principal client;
 251         ret = krb5_cc_get_principal(context, ccache, &client);
 252         if (ret) {
 253             krb5_warn(context, ret, "524init: can't get client principal");
 254             return ret;
 255         }
 256         memset(&in_creds, 0, sizeof(in_creds));
 257         ret = get_server(context, client, server, &in_creds.server);
 258         if(ret) {
 259             krb5_warn(context, ret, "524init: can't get server principal");
 260             krb5_free_principal(context, client);
 261             return ret;
 262         }
 263         in_creds.client = client;
 264         ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
 265         krb5_free_principal(context, client);
 266         krb5_free_principal(context, in_creds.server);
 267         if(ret)
 268             return ret;
 269     }
 270     ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
 271     if(ret)
 272         krb5_warn(context, ret, "converting creds");
 273     else {
 274         krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
 275         if(tret)
 276             krb5_warn(context, tret, "saving v4 creds");
 277     }
 278
 279     if(creds == NULL)
 280         krb5_free_creds(context, real_creds);
 281     memset(&c, 0, sizeof(c));
 282
 283     return ret;
 284 }
 285
 286 #endif
 287
 288 static int
 289 renew_validate(krb5_context context,
 290                int renew,
 291                int validate,
 292                krb5_ccache cache,
 293                const char *server,
 294                krb5_deltat life)
 295 {
 296     krb5_error_code ret;
 297     krb5_creds in, *out = NULL;
 298     krb5_kdc_flags flags;
 299
 300     memset(&in, 0, sizeof(in));
 301
 302     ret = krb5_cc_get_principal(context, cache, &in.client);
 303     if(ret) {
 304         krb5_warn(context, ret, "krb5_cc_get_principal");
 305         return ret;
 306     }
 307     ret = get_server(context, in.client, server, &in.server);
 308     if(ret) {
 309         krb5_warn(context, ret, "get_server");
 310         goto out;
 311     }
 312
 313     if (renew) {
 314         /*
 315          * no need to check the error here, it's only to be
 316          * friendly to the user
 317          */
 318         krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
 319     }
 320
 321     flags.i = 0;
 322     flags.b.renewable         = flags.b.renew = renew;
 323     flags.b.validate          = validate;
 324
 325     if (forwardable_flag != -1)
 326         flags.b.forwardable       = forwardable_flag;
 327     else if (out)
 328         flags.b.forwardable       = out->flags.b.forwardable;
 329
 330     if (proxiable_flag != -1)
 331         flags.b.proxiable         = proxiable_flag;
 332     else if (out)
 333         flags.b.proxiable         = out->flags.b.proxiable;
 334
 335     if (anonymous_flag)
 336         flags.b.request_anonymous = anonymous_flag;
 337     if(life)
 338         in.times.endtime = time(NULL) + life;
 339
 340     if (out) {
 341         krb5_free_creds (context, out);
 342         out = NULL;
 343     }
 344
 345
 346     ret = krb5_get_kdc_cred(context,
 347                             cache,
 348                             flags,
 349                             NULL,
 350                             NULL,
 351                             &in,
 352                             &out);
 353     if(ret) {
 354         krb5_warn(context, ret, "krb5_get_kdc_cred");
 355         goto out;
 356     }
 357     ret = krb5_cc_initialize(context, cache, in.client);
 358     if(ret) {
 359         krb5_free_creds (context, out);
 360         krb5_warn(context, ret, "krb5_cc_initialize");
 361         goto out;
 362     }
 363     ret = krb5_cc_store_cred(context, cache, out);
 364
 365     if(ret == 0 && server == NULL) {
 366         /* only do this if it's a general renew-my-tgt request */
 367 #ifndef HEIMDAL_SMALLER
 368         if(get_v4_tgt)
 369             do_524init(context, cache, out, NULL);
 370 #endif
 371 #ifndef NO_AFS
 372         if(do_afslog && k_hasafs())
 373             krb5_afslog(context, cache, NULL, NULL);
 374 #endif
 375     }
 376
 377     krb5_free_creds (context, out);
 378     if(ret) {
 379         krb5_warn(context, ret, "krb5_cc_store_cred");
 380         goto out;
 381     }
 382 out:
 383     krb5_free_cred_contents(context, &in);
 384     return ret;
 385 }
 386
 387 #ifndef NO_NTLM
 388
 389 static krb5_error_code
 390 store_ntlmkey(krb5_context context, krb5_ccache id,
 391               const char *domain, struct ntlm_buf *buf)
 392 {
 393     krb5_error_code ret;
 394     krb5_data data;
 395     char *name;
 396
 397     asprintf(&name, "ntlm-key-%s", domain);
 398     if (name == NULL) {
 399         krb5_clear_error_message(context);
 400         return ENOMEM;
 401     }
 402
 403     data.length = buf->length;
 404     data.data = buf->data;
 405
 406     ret = krb5_cc_set_config(context, id, NULL, name, &data);
 407     free(name);
 408     return ret;
 409 }
 410 #endif
 411
 412 static krb5_error_code
 413 get_new_tickets(krb5_context context,
 414                 krb5_principal principal,
 415                 krb5_ccache ccache,
 416                 krb5_deltat ticket_life,
 417                 int interactive)
 418 {
 419     krb5_error_code ret;
 420     krb5_get_init_creds_opt *opt;
 421     krb5_creds cred;
 422     char passwd[256];
 423     krb5_deltat start_time = 0;
 424     krb5_deltat renew = 0;
 425     const char *renewstr = NULL;
 426     krb5_enctype *enctype = NULL;
 427     krb5_ccache tempccache;
 428 #ifndef NO_NTLM
 429     struct ntlm_buf ntlmkey;
 430     memset(&ntlmkey, 0, sizeof(ntlmkey));
 431 #endif
 432     passwd[0] = '\0';
 433
 434     if (password_file) {
 435         FILE *f;
 436
 437         if (strcasecmp("STDIN", password_file) == 0)
 438             f = stdin;
 439         else
 440             f = fopen(password_file, "r");
 441         if (f == NULL)
 442             krb5_errx(context, 1, "Failed to open the password file %s",
 443                       password_file);
 444
 445         if (fgets(passwd, sizeof(passwd), f) == NULL)
 446             krb5_errx(context, 1,
 447                       N_("Failed to read password from file %s", ""),
 448                       password_file);
 449         if (f != stdin)
 450             fclose(f);
 451         passwd[strcspn(passwd, "\n")] = '\0';
 452     }
 453
 454
 455     memset(&cred, 0, sizeof(cred));
 456
 457     ret = krb5_get_init_creds_opt_alloc (context, &opt);
 458     if (ret)
 459         krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 460
 461     krb5_get_init_creds_opt_set_default_flags(context, "kinit",
 462         krb5_principal_get_realm(context, principal), opt);
 463
 464     if(forwardable_flag != -1)
 465         krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
 466     if(proxiable_flag != -1)
 467         krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
 468     if(anonymous_flag)
 469         krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
 470     if (pac_flag != -1)
 471         krb5_get_init_creds_opt_set_pac_request(context, opt,
 472                                                 pac_flag ? TRUE : FALSE);
 473     if (canonicalize_flag)
 474         krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
 475     if (pk_enterprise_flag && windows_flag)
 476         krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
 477     if (pk_user_id || ent_user_id || anonymous_flag) {
 478         ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
 479                                                  principal,
 480                                                  pk_user_id,
 481                                                  pk_x509_anchors,
 482                                                  NULL,
 483                                                  NULL,
 484                                                  pk_use_enckey ? 2 : 0 |
 485                                                  anonymous_flag ? 4 : 0,
 486                                                  krb5_prompter_posix,
 487                                                  NULL,
 488                                                  passwd);
 489         if (ret)
 490             krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
 491         if (ent_user_id)
 492             _krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
 493     }
 494
 495     if (addrs_flag != -1)
 496         krb5_get_init_creds_opt_set_addressless(context, opt,
 497                                                 addrs_flag ? FALSE : TRUE);
 498
 499     if (renew_life == NULL && renewable_flag)
 500         renewstr = "1 month";
 501     if (renew_life)
 502         renewstr = renew_life;
 503     if (renewstr) {
 504         renew = parse_time (renewstr, "s");
 505         if (renew < 0)
 506             errx (1, "unparsable time: %s", renewstr);
 507
 508         krb5_get_init_creds_opt_set_renew_life (opt, renew);
 509     }
 510
 511     if(ticket_life != 0)
 512         krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
 513
 514     if(start_str) {
 515         int tmp = parse_time (start_str, "s");
 516         if (tmp < 0)
 517             errx (1, N_("unparsable time: %s", ""), start_str);
 518
 519         start_time = tmp;
 520     }
 521
 522     if(etype_str.num_strings) {
 523         int i;
 524
 525         enctype = malloc(etype_str.num_strings * sizeof(*enctype));
 526         if(enctype == NULL)
 527             errx(1, "out of memory");
 528         for(i = 0; i < etype_str.num_strings; i++) {
 529             ret = krb5_string_to_enctype(context,
 530                                          etype_str.strings[i],
 531                                          &enctype[i]);
 532             if(ret)
 533                 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
 534         }
 535         krb5_get_init_creds_opt_set_etype_list(opt, enctype,
 536                                                etype_str.num_strings);
 537     }
 538
 539     if(use_keytab || keytab_str) {
 540         krb5_keytab kt;
 541         if(keytab_str)
 542             ret = krb5_kt_resolve(context, keytab_str, &kt);
 543         else
 544             ret = krb5_kt_default(context, &kt);
 545         if (ret)
 546             krb5_err (context, 1, ret, "resolving keytab");
 547         ret = krb5_get_init_creds_keytab (context,
 548                                           &cred,
 549                                           principal,
 550                                           kt,
 551                                           start_time,
 552                                           server_str,
 553                                           opt);
 554         krb5_kt_close(context, kt);
 555     } else if (pk_user_id || ent_user_id || anonymous_flag) {
 556         ret = krb5_get_init_creds_password (context,
 557                                             &cred,
 558                                             principal,
 559                                             passwd,
 560                                             krb5_prompter_posix,
 561                                             NULL,
 562                                             start_time,
 563                                             server_str,
 564                                             opt);
 565     } else if (!interactive) {
 566         krb5_warnx(context, "Not interactive, failed to get initial ticket");
 567         krb5_get_init_creds_opt_free(context, opt);
 568         return 0;
 569     } else {
 570
 571         if (passwd[0] == '\0') {
 572             char *p, *prompt;
 573
 574             krb5_unparse_name (context, principal, &p);
 575             asprintf (&prompt, N_("%s's Password: ", ""), p);
 576             free (p);
 577
 578             if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
 579                 memset(passwd, 0, sizeof(passwd));
 580                 exit(1);
 581             }
 582             free (prompt);
 583         }
 584
 585
 586         ret = krb5_get_init_creds_password (context,
 587                                             &cred,
 588                                             principal,
 589                                             passwd,
 590                                             krb5_prompter_posix,
 591                                             NULL,
 592                                             start_time,
 593                                             server_str,
 594                                             opt);
 595     }
 596     krb5_get_init_creds_opt_free(context, opt);
 597 #ifndef NO_NTLM
 598     if (ntlm_domain && passwd[0])
 599         heim_ntlm_nt_key(passwd, &ntlmkey);
 600 #endif
 601     memset(passwd, 0, sizeof(passwd));
 602
 603     switch(ret){
 604     case 0:
 605         break;
 606     case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
 607         exit(1);
 608     case KRB5KRB_AP_ERR_BAD_INTEGRITY:
 609     case KRB5KRB_AP_ERR_MODIFIED:
 610     case KRB5KDC_ERR_PREAUTH_FAILED:
 611         krb5_errx(context, 1, N_("Password incorrect", ""));
 612         break;
 613     case KRB5KRB_AP_ERR_V4_REPLY:
 614         krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
 615         break;
 616     default:
 617         krb5_err(context, 1, ret, "krb5_get_init_creds");
 618     }
 619
 620     if(ticket_life != 0) {
 621         if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
 622             char life[64];
 623             unparse_time_approx(cred.times.endtime - cred.times.starttime,
 624                                 life, sizeof(life));
 625             krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
 626         }
 627     }
 628     if(renew_life) {
 629         if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
 630             char life[64];
 631             unparse_time_approx(cred.times.renew_till - cred.times.starttime,
 632                                 life, sizeof(life));
 633             krb5_warnx(context,
 634                        N_("NOTICE: ticket renewable lifetime is %s", ""),
 635                        life);
 636         }
 637     }
 638
 639     ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
 640                              NULL, &tempccache);
 641     if (ret)
 642         krb5_err (context, 1, ret, "krb5_cc_new_unique");
 643
 644     ret = krb5_cc_initialize (context, tempccache, cred.client);
 645     if (ret)
 646         krb5_err (context, 1, ret, "krb5_cc_initialize");
 647
 648     ret = krb5_cc_store_cred (context, tempccache, &cred);
 649     if (ret)
 650         krb5_err (context, 1, ret, "krb5_cc_store_cred");
 651
 652     krb5_free_cred_contents (context, &cred);
 653
 654     ret = krb5_cc_move(context, tempccache, ccache);
 655     if (ret)
 656         krb5_err (context, 1, ret, "krb5_cc_move");
 657
 658     if (switch_cache_flags)
 659         krb5_cc_switch(context, ccache);
 660
 661 #ifndef NO_NTLM
 662     if (ntlm_domain && ntlmkey.data)
 663         store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
 664 #endif
 665
 666     if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
 667         unsigned char d = 0;
 668         krb5_data data;
 669
 670         if (ok_as_delegate_flag || windows_flag)
 671             d |= 1;
 672         if (use_referrals_flag || windows_flag)
 673             d |= 2;
 674
 675         data.length = 1;
 676         data.data = &d;
 677
 678         krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
 679     }
 680
 681
 682     if (enctype)
 683         free(enctype);
 684
 685     return 0;
 686 }
 687
 688 static time_t
 689 ticket_lifetime(krb5_context context, krb5_ccache cache,
 690                 krb5_principal client, const char *server)
 691 {
 692     krb5_creds in_cred, *cred;
 693     krb5_error_code ret;
 694     time_t timeout;
 695
 696     memset(&in_cred, 0, sizeof(in_cred));
 697
 698     ret = krb5_cc_get_principal(context, cache, &in_cred.client);
 699     if(ret) {
 700         krb5_warn(context, ret, "krb5_cc_get_principal");
 701         return 0;
 702     }
 703     ret = get_server(context, in_cred.client, server, &in_cred.server);
 704     if(ret) {
 705         krb5_free_principal(context, in_cred.client);
 706         krb5_warn(context, ret, "get_server");
 707         return 0;
 708     }
 709
 710     ret = krb5_get_credentials(context, KRB5_GC_CACHED,
 711                                cache, &in_cred, &cred);
 712     krb5_free_principal(context, in_cred.client);
 713     krb5_free_principal(context, in_cred.server);
 714     if(ret) {
 715         krb5_warn(context, ret, "krb5_get_credentials");
 716         return 0;
 717     }
 718     timeout = cred->times.endtime - cred->times.starttime;
 719     if (timeout < 0)
 720         timeout = 0;
 721     krb5_free_creds(context, cred);
 722     return timeout;
 723 }
 724
 725 struct renew_ctx {
 726     krb5_context context;
 727     krb5_ccache  ccache;
 728     krb5_principal principal;
 729     krb5_deltat ticket_life;
 730 };
 731
 732 static time_t
 733 renew_func(void *ptr)
 734 {
 735     struct renew_ctx *ctx = ptr;
 736     krb5_error_code ret;
 737     time_t expire;
 738     int new_tickets = 0;
 739
 740     if (renewable_flag) {
 741         ret = renew_validate(ctx->context, renewable_flag, validate_flag,
 742                              ctx->ccache, server_str, ctx->ticket_life);
 743         if (ret)
 744             new_tickets = 1;
 745     } else
 746         new_tickets = 1;
 747
 748     if (new_tickets)
 749         get_new_tickets(ctx->context, ctx->principal,
 750                         ctx->ccache, ctx->ticket_life, 0);
 751
 752 #ifndef HEIMDAL_SMALLER
 753     if(get_v4_tgt || convert_524)
 754         do_524init(ctx->context, ctx->ccache, NULL, server_str);
 755 #endif
 756 #ifndef NO_AFS
 757     if(do_afslog && k_hasafs())
 758         krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 759 #endif
 760
 761     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 762                              server_str) / 2;
 763     return expire + 1;
 764 }
 765
 766 int
 767 main (int argc, char **argv)
 768 {
 769     krb5_error_code ret;
 770     krb5_context context;
 771     krb5_ccache  ccache;
 772     krb5_principal principal;
 773     int optidx = 0;
 774     krb5_deltat ticket_life = 0;
 775     int parseflags = 0;
 776
 777     setprogname (argv[0]);
 778
 779     setlocale (LC_ALL, "");
 780     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 781     textdomain("heimdal_kuser");
 782
 783     ret = krb5_init_context (&context);
 784     if (ret == KRB5_CONFIG_BADFORMAT)
 785         errx (1, "krb5_init_context failed to parse configuration file");
 786     else if (ret)
 787         errx(1, "krb5_init_context failed: %d", ret);
 788
 789     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 790         usage(1);
 791
 792     if (help_flag)
 793         usage (0);
 794
 795     if(version_flag) {
 796         print_version(NULL);
 797         exit(0);
 798     }
 799
 800     argc -= optidx;
 801     argv += optidx;
 802
 803     if (canonicalize_flag || enterprise_flag)
 804         parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
 805
 806     if (pk_enterprise_flag) {
 807         ret = _krb5_pk_enterprise_cert(context, pk_user_id,
 808                                        argv[0], &principal,
 809                                        &ent_user_id);
 810         if (ret)
 811             krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
 812
 813         pk_user_id = NULL;
 814
 815     } else if (anonymous_flag) {
 816
 817         ret = krb5_make_principal(context, &principal, argv[0],
 818                                   KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
 819                                   NULL);
 820         if (ret)
 821             krb5_err(context, 1, ret, "krb5_make_principal");
 822         krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
 823
 824     } else {
 825         if (argv[0]) {
 826             ret = krb5_parse_name_flags (context, argv[0], parseflags,
 827                                          &principal);
 828             if (ret)
 829                 krb5_err (context, 1, ret, "krb5_parse_name");
 830         } else {
 831             ret = krb5_get_default_principal (context, &principal);
 832             if (ret)
 833                 krb5_err (context, 1, ret, "krb5_get_default_principal");
 834         }
 835     }
 836
 837     if(fcache_version)
 838         krb5_set_fcache_version(context, fcache_version);
 839
 840     if(renewable_flag == -1)
 841         /* this seems somewhat pointless, but whatever */
 842         krb5_appdefault_boolean(context, "kinit",
 843                                 krb5_principal_get_realm(context, principal),
 844                                 "renewable", FALSE, &renewable_flag);
 845 #ifndef HEIMDAL_SMALLER
 846     if(get_v4_tgt == -1)
 847         krb5_appdefault_boolean(context, "kinit",
 848                                 krb5_principal_get_realm(context, principal),
 849                                 "krb4_get_tickets", FALSE, &get_v4_tgt);
 850 #endif
 851     if(do_afslog == -1)
 852         krb5_appdefault_boolean(context, "kinit",
 853                                 krb5_principal_get_realm(context, principal),
 854                                 "afslog", TRUE, &do_afslog);
 855
 856     if(cred_cache)
 857         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 858     else {
 859         if(argc > 1) {
 860             char s[1024];
 861             ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
 862             if(ret)
 863                 krb5_err(context, 1, ret, "creating cred cache");
 864             snprintf(s, sizeof(s), "%s:%s",
 865                      krb5_cc_get_type(context, ccache),
 866                      krb5_cc_get_name(context, ccache));
 867             setenv("KRB5CCNAME", s, 1);
 868 #ifndef HEIMDAL_SMALLER
 869             if (get_v4_tgt) {
 870                 int fd;
 871                 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
 872                     krb5_errx(context, 1, "out of memory");
 873                 if((fd = mkstemp(krb4_cc_name)) >= 0) {
 874                     close(fd);
 875                     setenv("KRBTKFILE", krb4_cc_name, 1);
 876                 } else {
 877                     free(krb4_cc_name);
 878                     krb4_cc_name = NULL;
 879                 }
 880             }
 881 #endif
 882         } else {
 883             ret = krb5_cc_cache_match(context, principal, &ccache);
 884             if (ret)
 885                 ret = krb5_cc_default (context, &ccache);
 886         }
 887     }
 888     if (ret)
 889         krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
 890
 891 #ifndef NO_AFS
 892     if(argc > 1 && k_hasafs ())
 893         k_setpag();
 894 #endif
 895
 896     if (lifetime) {
 897         int tmp = parse_time (lifetime, "s");
 898         if (tmp < 0)
 899             errx (1, N_("unparsable time: %s", ""), lifetime);
 900
 901         ticket_life = tmp;
 902     }
 903
 904     if(addrs_flag == 0 && extra_addresses.num_strings > 0)
 905         krb5_errx(context, 1,
 906                   N_("specifying both extra addresses and "
 907                      "no addresses makes no sense", ""));
 908     {
 909         int i;
 910         krb5_addresses addresses;
 911         memset(&addresses, 0, sizeof(addresses));
 912         for(i = 0; i < extra_addresses.num_strings; i++) {
 913             ret = krb5_parse_address(context, extra_addresses.strings[i],
 914                                      &addresses);
 915             if (ret == 0) {
 916                 krb5_add_extra_addresses(context, &addresses);
 917                 krb5_free_addresses(context, &addresses);
 918             }
 919         }
 920         free_getarg_strings(&extra_addresses);
 921     }
 922
 923     if(renew_flag || validate_flag) {
 924         ret = renew_validate(context, renew_flag, validate_flag,
 925                              ccache, server_str, ticket_life);
 926         exit(ret != 0);
 927     }
 928
 929 #ifndef HEIMDAL_SMALLER
 930     if(!convert_524)
 931 #endif
 932         get_new_tickets(context, principal, ccache, ticket_life, 1);
 933
 934 #ifndef HEIMDAL_SMALLER
 935     if(get_v4_tgt || convert_524)
 936         do_524init(context, ccache, NULL, server_str);
 937 #endif
 938 #ifndef NO_AFS
 939     if(do_afslog && k_hasafs())
 940         krb5_afslog(context, ccache, NULL, NULL);
 941 #endif
 942     if(argc > 1) {
 943         struct renew_ctx ctx;
 944         time_t timeout;
 945
 946         timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
 947
 948         ctx.context = context;
 949         ctx.ccache = ccache;
 950         ctx.principal = principal;
 951         ctx.ticket_life = ticket_life;
 952
 953         ret = simple_execvp_timed(argv[1], argv+1,
 954                                   renew_func, &ctx, timeout);
 955 #define EX_NOEXEC       126
 956 #define EX_NOTFOUND     127
 957         if(ret == EX_NOEXEC)
 958             krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
 959         else if(ret == EX_NOTFOUND)
 960             krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
 961
 962         krb5_cc_destroy(context, ccache);
 963 #ifndef HEIMDAL_SMALLER
 964         _krb5_krb_dest_tkt(context, krb4_cc_name);
 965 #endif
 966 #ifndef NO_AFS
 967         if(k_hasafs())
 968             k_unlog();
 969 #endif
 970     } else {
 971         krb5_cc_close (context, ccache);
 972         ret = 0;
 973     }
 974     krb5_free_principal(context, principal);
 975     krb5_free_context (context);
 976     return ret;
 977 }