2 * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
34 #include "kuser_locl.h"
35 RCSID("$Id: kinit.c 22116 2007-12-03 21:22:58Z lha $");
37 #include "krb5-v4compat.h"
41 int forwardable_flag = -1;
42 int proxiable_flag = -1;
43 int renewable_flag = -1;
46 int validate_flag = 0;
50 struct getarg_strings extra_addresses;
51 int anonymous_flag = 0;
52 char *lifetime = NULL;
53 char *renew_life = NULL;
54 char *server_str = NULL;
55 char *cred_cache = NULL;
56 char *start_str = NULL;
57 struct getarg_strings etype_str;
59 char *keytab_str = NULL;
64 char *password_file = NULL;
65 char *pk_user_id = NULL;
66 char *pk_x509_anchors = NULL;
67 int pk_use_enckey = 0;
68 static int canonicalize_flag = 0;
69 static char *ntlm_domain;
71 static char *krb4_cc_name;
73 static struct getargs args[] = {
83 { "524init", '4', arg_flag, &get_v4_tgt,
84 "obtain version 4 TGT" },
86 { "524convert", '9', arg_flag, &convert_524,
87 "only convert ticket to version 4" },
89 { "afslog", 0 , arg_flag, &do_afslog,
90 "obtain afs tokens" },
92 { "cache", 'c', arg_string, &cred_cache,
93 "credentials cache", "cachename" },
95 { "forwardable", 'f', arg_flag, &forwardable_flag,
96 "get forwardable tickets"},
98 { "keytab", 't', arg_string, &keytab_str,
99 "keytab to use", "keytabname" },
101 { "lifetime", 'l', arg_string, &lifetime,
102 "lifetime of tickets", "time"},
104 { "proxiable", 'p', arg_flag, &proxiable_flag,
105 "get proxiable tickets" },
107 { "renew", 'R', arg_flag, &renew_flag,
110 { "renewable", 0, arg_flag, &renewable_flag,
111 "get renewable tickets" },
113 { "renewable-life", 'r', arg_string, &renew_life,
114 "renewable lifetime of tickets", "time" },
116 { "server", 'S', arg_string, &server_str,
117 "server to get ticket for", "principal" },
119 { "start-time", 's', arg_string, &start_str,
120 "when ticket gets valid", "time" },
122 { "use-keytab", 'k', arg_flag, &use_keytab,
123 "get key from keytab" },
125 { "validate", 'v', arg_flag, &validate_flag,
128 { "enctypes", 'e', arg_strings, &etype_str,
129 "encryption types to use", "enctypes" },
131 { "fcache-version", 0, arg_integer, &fcache_version,
132 "file cache version to create" },
134 { "addresses", 'A', arg_negative_flag, &addrs_flag,
135 "request a ticket with no addresses" },
137 { "extra-addresses",'a', arg_strings, &extra_addresses,
138 "include these extra addresses", "addresses" },
140 { "anonymous", 0, arg_flag, &anonymous_flag,
141 "request an anonymous ticket" },
143 { "request-pac", 0, arg_flag, &pac_flag,
144 "request a Windows PAC" },
146 { "password-file", 0, arg_string, &password_file,
147 "read the password from a file" },
149 { "canonicalize",0, arg_flag, &canonicalize_flag,
150 "canonicalize client principal" },
152 { "pk-user", 'C', arg_string, &pk_user_id,
153 "principal's public/private/certificate identifier", "id" },
155 { "x509-anchors", 'D', arg_string, &pk_x509_anchors,
156 "directory with CA certificates", "directory" },
158 { "pk-use-enckey", 0, arg_flag, &pk_use_enckey,
159 "Use RSA encrypted reply (instead of DH)" },
161 { "ntlm-domain", 0, arg_string, &ntlm_domain,
162 "NTLM domain", "domain" },
164 { "version", 0, arg_flag, &version_flag },
165 { "help", 0, arg_flag, &help_flag }
171 arg_printusage (args,
172 sizeof(args)/sizeof(*args),
174 "[principal [command]]");
178 static krb5_error_code
179 get_server(krb5_context context,
180 krb5_principal client,
182 krb5_principal *princ)
184 krb5_realm *client_realm;
186 return krb5_parse_name(context, server, princ);
188 client_realm = krb5_princ_realm (context, client);
189 return krb5_make_principal(context, princ, *client_realm,
190 KRB5_TGS_NAME, *client_realm, NULL);
193 static krb5_error_code
194 do_524init(krb5_context context, krb5_ccache ccache,
195 krb5_creds *creds, const char *server)
199 struct credentials c;
200 krb5_creds in_creds, *real_creds;
205 krb5_principal client;
206 krb5_cc_get_principal(context, ccache, &client);
207 memset(&in_creds, 0, sizeof(in_creds));
208 ret = get_server(context, client, server, &in_creds.server);
210 krb5_free_principal(context, client);
213 in_creds.client = client;
214 ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
215 krb5_free_principal(context, client);
216 krb5_free_principal(context, in_creds.server);
220 ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
222 krb5_warn(context, ret, "converting creds");
224 krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
226 krb5_warn(context, tret, "saving v4 creds");
230 krb5_free_creds(context, real_creds);
231 memset(&c, 0, sizeof(c));
237 renew_validate(krb5_context context,
245 krb5_creds in, *out = NULL;
246 krb5_kdc_flags flags;
248 memset(&in, 0, sizeof(in));
250 ret = krb5_cc_get_principal(context, cache, &in.client);
252 krb5_warn(context, ret, "krb5_cc_get_principal");
255 ret = get_server(context, in.client, server, &in.server);
257 krb5_warn(context, ret, "get_server");
263 * no need to check the error here, it's only to be
264 * friendly to the user
266 krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
270 flags.b.renewable = flags.b.renew = renew;
271 flags.b.validate = validate;
273 if (forwardable_flag != -1)
274 flags.b.forwardable = forwardable_flag;
276 flags.b.forwardable = out->flags.b.forwardable;
278 if (proxiable_flag != -1)
279 flags.b.proxiable = proxiable_flag;
281 flags.b.proxiable = out->flags.b.proxiable;
283 if (anonymous_flag != -1)
284 flags.b.request_anonymous = anonymous_flag;
286 in.times.endtime = time(NULL) + life;
289 krb5_free_creds (context, out);
294 ret = krb5_get_kdc_cred(context,
302 krb5_warn(context, ret, "krb5_get_kdc_cred");
305 ret = krb5_cc_initialize(context, cache, in.client);
307 krb5_free_creds (context, out);
308 krb5_warn(context, ret, "krb5_cc_initialize");
311 ret = krb5_cc_store_cred(context, cache, out);
313 if(ret == 0 && server == NULL) {
314 /* only do this if it's a general renew-my-tgt request */
316 do_524init(context, cache, out, NULL);
317 if(do_afslog && k_hasafs())
318 krb5_afslog(context, cache, NULL, NULL);
321 krb5_free_creds (context, out);
323 krb5_warn(context, ret, "krb5_cc_store_cred");
327 krb5_free_cred_contents(context, &in);
331 static krb5_error_code
332 store_ntlmkey(krb5_context context, krb5_ccache id,
333 const char *domain, krb5_const_principal client,
334 struct ntlm_buf *buf)
339 memset(&cred, 0, sizeof(cred));
341 ret = krb5_make_principal(context, &cred.server,
342 krb5_principal_get_realm(context, client),
343 "@ntlm-key", domain, NULL);
346 ret = krb5_copy_principal(context, client, &cred.client);
350 cred.times.authtime = time(NULL);
351 cred.times.endtime = time(NULL) + 3600 * 24 * 30; /* XXX */
352 cred.session.keytype = ENCTYPE_ARCFOUR_HMAC_MD5;
353 ret = krb5_data_copy(&cred.session.keyvalue, buf->data, buf->length);
357 ret = krb5_cc_store_cred(context, id, &cred);
360 krb5_free_cred_contents (context, &cred);
364 static krb5_error_code
365 get_new_tickets(krb5_context context,
366 krb5_principal principal,
368 krb5_deltat ticket_life,
372 krb5_get_init_creds_opt *opt;
375 krb5_deltat start_time = 0;
376 krb5_deltat renew = 0;
377 char *renewstr = NULL;
378 krb5_enctype *enctype = NULL;
379 struct ntlm_buf ntlmkey;
380 krb5_ccache tempccache;
382 memset(&ntlmkey, 0, sizeof(ntlmkey));
388 if (strcasecmp("STDIN", password_file) == 0)
391 f = fopen(password_file, "r");
393 krb5_errx(context, 1, "Failed to open the password file %s",
396 if (fgets(passwd, sizeof(passwd), f) == NULL)
397 krb5_errx(context, 1,
398 "Failed to read password from file %s", password_file);
401 passwd[strcspn(passwd, "\n")] = '\0';
405 memset(&cred, 0, sizeof(cred));
407 ret = krb5_get_init_creds_opt_alloc (context, &opt);
409 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
411 krb5_get_init_creds_opt_set_default_flags(context, "kinit",
412 krb5_principal_get_realm(context, principal), opt);
414 if(forwardable_flag != -1)
415 krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
416 if(proxiable_flag != -1)
417 krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
418 if(anonymous_flag != -1)
419 krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
421 krb5_get_init_creds_opt_set_pac_request(context, opt,
422 pac_flag ? TRUE : FALSE);
423 if (canonicalize_flag)
424 krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
426 ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
432 pk_use_enckey ? 2 : 0,
437 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
440 if (addrs_flag != -1)
441 krb5_get_init_creds_opt_set_addressless(context, opt,
442 addrs_flag ? FALSE : TRUE);
444 if (renew_life == NULL && renewable_flag)
445 renewstr = "1 month";
447 renewstr = renew_life;
449 renew = parse_time (renewstr, "s");
451 errx (1, "unparsable time: %s", renewstr);
453 krb5_get_init_creds_opt_set_renew_life (opt, renew);
457 krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
460 int tmp = parse_time (start_str, "s");
462 errx (1, "unparsable time: %s", start_str);
467 if(etype_str.num_strings) {
470 enctype = malloc(etype_str.num_strings * sizeof(*enctype));
472 errx(1, "out of memory");
473 for(i = 0; i < etype_str.num_strings; i++) {
474 ret = krb5_string_to_enctype(context,
475 etype_str.strings[i],
478 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
480 krb5_get_init_creds_opt_set_etype_list(opt, enctype,
481 etype_str.num_strings);
484 if(use_keytab || keytab_str) {
487 ret = krb5_kt_resolve(context, keytab_str, &kt);
489 ret = krb5_kt_default(context, &kt);
491 krb5_err (context, 1, ret, "resolving keytab");
492 ret = krb5_get_init_creds_keytab (context,
499 krb5_kt_close(context, kt);
500 } else if (pk_user_id) {
501 ret = krb5_get_init_creds_password (context,
510 } else if (!interactive) {
511 krb5_warnx(context, "Not interactive, failed to get initial ticket");
512 krb5_get_init_creds_opt_free(context, opt);
516 if (passwd[0] == '\0') {
519 krb5_unparse_name (context, principal, &p);
520 asprintf (&prompt, "%s's Password: ", p);
523 if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
524 memset(passwd, 0, sizeof(passwd));
531 ret = krb5_get_init_creds_password (context,
541 krb5_get_init_creds_opt_free(context, opt);
542 if (ntlm_domain && passwd[0])
543 heim_ntlm_nt_key(passwd, &ntlmkey);
544 memset(passwd, 0, sizeof(passwd));
549 case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
551 case KRB5KRB_AP_ERR_BAD_INTEGRITY:
552 case KRB5KRB_AP_ERR_MODIFIED:
553 case KRB5KDC_ERR_PREAUTH_FAILED:
554 krb5_errx(context, 1, "Password incorrect");
556 case KRB5KRB_AP_ERR_V4_REPLY:
557 krb5_errx(context, 1, "Looks like a Kerberos 4 reply");
560 krb5_err(context, 1, ret, "krb5_get_init_creds");
563 if(ticket_life != 0) {
564 if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
566 unparse_time_approx(cred.times.endtime - cred.times.starttime,
568 krb5_warnx(context, "NOTICE: ticket lifetime is %s", life);
572 if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
574 unparse_time_approx(cred.times.renew_till - cred.times.starttime,
576 krb5_warnx(context, "NOTICE: ticket renewable lifetime is %s",
581 ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
584 krb5_err (context, 1, ret, "krb5_cc_new_unique");
586 ret = krb5_cc_initialize (context, tempccache, cred.client);
588 krb5_err (context, 1, ret, "krb5_cc_initialize");
590 ret = krb5_cc_store_cred (context, tempccache, &cred);
592 krb5_err (context, 1, ret, "krb5_cc_store_cred");
594 krb5_free_cred_contents (context, &cred);
596 ret = krb5_cc_move(context, tempccache, ccache);
598 krb5_err (context, 1, ret, "krb5_cc_move");
600 if (ntlm_domain && ntlmkey.data)
601 store_ntlmkey(context, ccache, ntlm_domain, principal, &ntlmkey);
610 ticket_lifetime(krb5_context context, krb5_ccache cache,
611 krb5_principal client, const char *server)
613 krb5_creds in_cred, *cred;
617 memset(&in_cred, 0, sizeof(in_cred));
619 ret = krb5_cc_get_principal(context, cache, &in_cred.client);
621 krb5_warn(context, ret, "krb5_cc_get_principal");
624 ret = get_server(context, in_cred.client, server, &in_cred.server);
626 krb5_free_principal(context, in_cred.client);
627 krb5_warn(context, ret, "get_server");
631 ret = krb5_get_credentials(context, KRB5_GC_CACHED,
632 cache, &in_cred, &cred);
633 krb5_free_principal(context, in_cred.client);
634 krb5_free_principal(context, in_cred.server);
636 krb5_warn(context, ret, "krb5_get_credentials");
639 timeout = cred->times.endtime - cred->times.starttime;
642 krb5_free_creds(context, cred);
647 krb5_context context;
649 krb5_principal principal;
650 krb5_deltat ticket_life;
654 renew_func(void *ptr)
656 struct renew_ctx *ctx = ptr;
661 if (renewable_flag) {
662 ret = renew_validate(ctx->context, renewable_flag, validate_flag,
663 ctx->ccache, server_str, ctx->ticket_life);
670 get_new_tickets(ctx->context, ctx->principal,
671 ctx->ccache, ctx->ticket_life, 0);
673 if(get_v4_tgt || convert_524)
674 do_524init(ctx->context, ctx->ccache, NULL, server_str);
675 if(do_afslog && k_hasafs())
676 krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
678 expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
684 main (int argc, char **argv)
687 krb5_context context;
689 krb5_principal principal;
691 krb5_deltat ticket_life = 0;
694 setprogname (argv[0]);
696 ret = krb5_init_context (&context);
697 if (ret == KRB5_CONFIG_BADFORMAT)
698 errx (1, "krb5_init_context failed to parse configuration file");
700 errx(1, "krb5_init_context failed: %d", ret);
702 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
716 if (canonicalize_flag)
717 parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
720 ret = krb5_parse_name_flags (context, argv[0], parseflags, &principal);
722 krb5_err (context, 1, ret, "krb5_parse_name");
724 ret = krb5_get_default_principal (context, &principal);
726 krb5_err (context, 1, ret, "krb5_get_default_principal");
730 krb5_set_fcache_version(context, fcache_version);
732 if(renewable_flag == -1)
733 /* this seems somewhat pointless, but whatever */
734 krb5_appdefault_boolean(context, "kinit",
735 krb5_principal_get_realm(context, principal),
736 "renewable", FALSE, &renewable_flag);
738 krb5_appdefault_boolean(context, "kinit",
739 krb5_principal_get_realm(context, principal),
740 "krb4_get_tickets", FALSE, &get_v4_tgt);
742 krb5_appdefault_boolean(context, "kinit",
743 krb5_principal_get_realm(context, principal),
744 "afslog", TRUE, &do_afslog);
747 ret = krb5_cc_resolve(context, cred_cache, &ccache);
751 ret = krb5_cc_gen_new(context, &krb5_fcc_ops, &ccache);
753 krb5_err(context, 1, ret, "creating cred cache");
754 snprintf(s, sizeof(s), "%s:%s",
755 krb5_cc_get_type(context, ccache),
756 krb5_cc_get_name(context, ccache));
757 setenv("KRB5CCNAME", s, 1);
760 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
761 krb5_errx(context, 1, "out of memory");
762 if((fd = mkstemp(krb4_cc_name)) >= 0) {
764 setenv("KRBTKFILE", krb4_cc_name, 1);
771 ret = krb5_cc_cache_match(context, principal, NULL, &ccache);
773 ret = krb5_cc_default (context, &ccache);
777 krb5_err (context, 1, ret, "resolving credentials cache");
779 if(argc > 1 && k_hasafs ())
783 int tmp = parse_time (lifetime, "s");
785 errx (1, "unparsable time: %s", lifetime);
790 if(addrs_flag == 0 && extra_addresses.num_strings > 0)
791 krb5_errx(context, 1, "specifying both extra addresses and "
792 "no addresses makes no sense");
795 krb5_addresses addresses;
796 memset(&addresses, 0, sizeof(addresses));
797 for(i = 0; i < extra_addresses.num_strings; i++) {
798 ret = krb5_parse_address(context, extra_addresses.strings[i],
801 krb5_add_extra_addresses(context, &addresses);
802 krb5_free_addresses(context, &addresses);
805 free_getarg_strings(&extra_addresses);
808 if(renew_flag || validate_flag) {
809 ret = renew_validate(context, renew_flag, validate_flag,
810 ccache, server_str, ticket_life);
815 get_new_tickets(context, principal, ccache, ticket_life, 1);
817 if(get_v4_tgt || convert_524)
818 do_524init(context, ccache, NULL, server_str);
819 if(do_afslog && k_hasafs())
820 krb5_afslog(context, ccache, NULL, NULL);
822 struct renew_ctx ctx;
825 timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
827 ctx.context = context;
829 ctx.principal = principal;
830 ctx.ticket_life = ticket_life;
832 ret = simple_execvp_timed(argv[1], argv+1,
833 renew_func, &ctx, timeout);
834 #define EX_NOEXEC 126
835 #define EX_NOTFOUND 127
837 krb5_warnx(context, "permission denied: %s", argv[1]);
838 else if(ret == EX_NOTFOUND)
839 krb5_warnx(context, "command not found: %s", argv[1]);
841 krb5_cc_destroy(context, ccache);
842 _krb5_krb_dest_tkt(context, krb4_cc_name);
846 krb5_cc_close (context, ccache);
849 krb5_free_principal(context, principal);
850 krb5_free_context (context);