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"
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 int ok_as_delegate_flag = 0;
70 static int use_referrals_flag = 0;
71 static int windows_flag = 0;
72 static char *ntlm_domain;
74 static char *krb4_cc_name;
76 static struct getargs args[] = {
86 { "524init", '4', arg_flag, &get_v4_tgt,
87 "obtain version 4 TGT" },
89 { "524convert", '9', arg_flag, &convert_524,
90 "only convert ticket to version 4" },
92 { "afslog", 0 , arg_flag, &do_afslog,
93 "obtain afs tokens" },
95 { "cache", 'c', arg_string, &cred_cache,
96 "credentials cache", "cachename" },
98 { "forwardable", 'f', arg_flag, &forwardable_flag,
99 "get forwardable tickets"},
101 { "keytab", 't', arg_string, &keytab_str,
102 "keytab to use", "keytabname" },
104 { "lifetime", 'l', arg_string, &lifetime,
105 "lifetime of tickets", "time"},
107 { "proxiable", 'p', arg_flag, &proxiable_flag,
108 "get proxiable tickets" },
110 { "renew", 'R', arg_flag, &renew_flag,
113 { "renewable", 0, arg_flag, &renewable_flag,
114 "get renewable tickets" },
116 { "renewable-life", 'r', arg_string, &renew_life,
117 "renewable lifetime of tickets", "time" },
119 { "server", 'S', arg_string, &server_str,
120 "server to get ticket for", "principal" },
122 { "start-time", 's', arg_string, &start_str,
123 "when ticket gets valid", "time" },
125 { "use-keytab", 'k', arg_flag, &use_keytab,
126 "get key from keytab" },
128 { "validate", 'v', arg_flag, &validate_flag,
131 { "enctypes", 'e', arg_strings, &etype_str,
132 "encryption types to use", "enctypes" },
134 { "fcache-version", 0, arg_integer, &fcache_version,
135 "file cache version to create" },
137 { "addresses", 'A', arg_negative_flag, &addrs_flag,
138 "request a ticket with no addresses" },
140 { "extra-addresses",'a', arg_strings, &extra_addresses,
141 "include these extra addresses", "addresses" },
143 { "anonymous", 0, arg_flag, &anonymous_flag,
144 "request an anonymous ticket" },
146 { "request-pac", 0, arg_flag, &pac_flag,
147 "request a Windows PAC" },
149 { "password-file", 0, arg_string, &password_file,
150 "read the password from a file" },
152 { "canonicalize",0, arg_flag, &canonicalize_flag,
153 "canonicalize client principal" },
155 { "pk-user", 'C', arg_string, &pk_user_id,
156 "principal's public/private/certificate identifier", "id" },
158 { "x509-anchors", 'D', arg_string, &pk_x509_anchors,
159 "directory with CA certificates", "directory" },
161 { "pk-use-enckey", 0, arg_flag, &pk_use_enckey,
162 "Use RSA encrypted reply (instead of DH)" },
164 { "ntlm-domain", 0, arg_string, &ntlm_domain,
165 "NTLM domain", "domain" },
167 { "ok-as-delegate", 0, arg_flag, &ok_as_delegate_flag,
168 "honor ok-as-delegate on tickets" },
170 { "use-referrals", 0, arg_flag, &use_referrals_flag,
171 "only use referrals, no dns canalisation" },
173 { "windows", 0, arg_flag, &windows_flag,
174 "get windows behavior" },
176 { "version", 0, arg_flag, &version_flag },
177 { "help", 0, arg_flag, &help_flag }
183 arg_printusage (args,
184 sizeof(args)/sizeof(*args),
186 "[principal [command]]");
190 static krb5_error_code
191 get_server(krb5_context context,
192 krb5_principal client,
194 krb5_principal *princ)
196 krb5_realm *client_realm;
198 return krb5_parse_name(context, server, princ);
200 client_realm = krb5_princ_realm (context, client);
201 return krb5_make_principal(context, princ, *client_realm,
202 KRB5_TGS_NAME, *client_realm, NULL);
205 static krb5_error_code
206 do_524init(krb5_context context, krb5_ccache ccache,
207 krb5_creds *creds, const char *server)
211 struct credentials c;
212 krb5_creds in_creds, *real_creds;
217 krb5_principal client;
218 krb5_cc_get_principal(context, ccache, &client);
219 memset(&in_creds, 0, sizeof(in_creds));
220 ret = get_server(context, client, server, &in_creds.server);
222 krb5_free_principal(context, client);
225 in_creds.client = client;
226 ret = krb5_get_credentials(context, 0, ccache, &in_creds, &real_creds);
227 krb5_free_principal(context, client);
228 krb5_free_principal(context, in_creds.server);
232 ret = krb524_convert_creds_kdc_ccache(context, ccache, real_creds, &c);
234 krb5_warn(context, ret, "converting creds");
236 krb5_error_code tret = _krb5_krb_tf_setup(context, &c, NULL, 0);
238 krb5_warn(context, tret, "saving v4 creds");
242 krb5_free_creds(context, real_creds);
243 memset(&c, 0, sizeof(c));
249 renew_validate(krb5_context context,
257 krb5_creds in, *out = NULL;
258 krb5_kdc_flags flags;
260 memset(&in, 0, sizeof(in));
262 ret = krb5_cc_get_principal(context, cache, &in.client);
264 krb5_warn(context, ret, "krb5_cc_get_principal");
267 ret = get_server(context, in.client, server, &in.server);
269 krb5_warn(context, ret, "get_server");
275 * no need to check the error here, it's only to be
276 * friendly to the user
278 krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
282 flags.b.renewable = flags.b.renew = renew;
283 flags.b.validate = validate;
285 if (forwardable_flag != -1)
286 flags.b.forwardable = forwardable_flag;
288 flags.b.forwardable = out->flags.b.forwardable;
290 if (proxiable_flag != -1)
291 flags.b.proxiable = proxiable_flag;
293 flags.b.proxiable = out->flags.b.proxiable;
295 if (anonymous_flag != -1)
296 flags.b.request_anonymous = anonymous_flag;
298 in.times.endtime = time(NULL) + life;
301 krb5_free_creds (context, out);
306 ret = krb5_get_kdc_cred(context,
314 krb5_warn(context, ret, "krb5_get_kdc_cred");
317 ret = krb5_cc_initialize(context, cache, in.client);
319 krb5_free_creds (context, out);
320 krb5_warn(context, ret, "krb5_cc_initialize");
323 ret = krb5_cc_store_cred(context, cache, out);
325 if(ret == 0 && server == NULL) {
326 /* only do this if it's a general renew-my-tgt request */
328 do_524init(context, cache, out, NULL);
329 if(do_afslog && k_hasafs())
330 krb5_afslog(context, cache, NULL, NULL);
333 krb5_free_creds (context, out);
335 krb5_warn(context, ret, "krb5_cc_store_cred");
339 krb5_free_cred_contents(context, &in);
343 static krb5_error_code
344 store_ntlmkey(krb5_context context, krb5_ccache id,
345 const char *domain, struct ntlm_buf *buf)
351 asprintf(&name, "ntlm-key-%s", domain);
353 krb5_clear_error_string(context);
357 data.length = buf->length;
358 data.data = buf->data;
360 ret = krb5_cc_set_config(context, id, NULL, name, &data);
365 static krb5_error_code
366 get_new_tickets(krb5_context context,
367 krb5_principal principal,
369 krb5_deltat ticket_life,
373 krb5_get_init_creds_opt *opt;
376 krb5_deltat start_time = 0;
377 krb5_deltat renew = 0;
378 char *renewstr = NULL;
379 krb5_enctype *enctype = NULL;
380 struct ntlm_buf ntlmkey;
381 krb5_ccache tempccache;
383 memset(&ntlmkey, 0, sizeof(ntlmkey));
389 if (strcasecmp("STDIN", password_file) == 0)
392 f = fopen(password_file, "r");
394 krb5_errx(context, 1, "Failed to open the password file %s",
397 if (fgets(passwd, sizeof(passwd), f) == NULL)
398 krb5_errx(context, 1,
399 "Failed to read password from file %s", password_file);
402 passwd[strcspn(passwd, "\n")] = '\0';
406 memset(&cred, 0, sizeof(cred));
408 ret = krb5_get_init_creds_opt_alloc (context, &opt);
410 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
412 krb5_get_init_creds_opt_set_default_flags(context, "kinit",
413 krb5_principal_get_realm(context, principal), opt);
415 if(forwardable_flag != -1)
416 krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
417 if(proxiable_flag != -1)
418 krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
419 if(anonymous_flag != -1)
420 krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
422 krb5_get_init_creds_opt_set_pac_request(context, opt,
423 pac_flag ? TRUE : FALSE);
424 if (canonicalize_flag)
425 krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
427 ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
433 pk_use_enckey ? 2 : 0,
438 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
441 if (addrs_flag != -1)
442 krb5_get_init_creds_opt_set_addressless(context, opt,
443 addrs_flag ? FALSE : TRUE);
445 if (renew_life == NULL && renewable_flag)
446 renewstr = "1 month";
448 renewstr = renew_life;
450 renew = parse_time (renewstr, "s");
452 errx (1, "unparsable time: %s", renewstr);
454 krb5_get_init_creds_opt_set_renew_life (opt, renew);
458 krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
461 int tmp = parse_time (start_str, "s");
463 errx (1, "unparsable time: %s", start_str);
468 if(etype_str.num_strings) {
471 enctype = malloc(etype_str.num_strings * sizeof(*enctype));
473 errx(1, "out of memory");
474 for(i = 0; i < etype_str.num_strings; i++) {
475 ret = krb5_string_to_enctype(context,
476 etype_str.strings[i],
479 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
481 krb5_get_init_creds_opt_set_etype_list(opt, enctype,
482 etype_str.num_strings);
485 if(use_keytab || keytab_str) {
488 ret = krb5_kt_resolve(context, keytab_str, &kt);
490 ret = krb5_kt_default(context, &kt);
492 krb5_err (context, 1, ret, "resolving keytab");
493 ret = krb5_get_init_creds_keytab (context,
500 krb5_kt_close(context, kt);
501 } else if (pk_user_id) {
502 ret = krb5_get_init_creds_password (context,
511 } else if (!interactive) {
512 krb5_warnx(context, "Not interactive, failed to get initial ticket");
513 krb5_get_init_creds_opt_free(context, opt);
517 if (passwd[0] == '\0') {
520 krb5_unparse_name (context, principal, &p);
521 asprintf (&prompt, "%s's Password: ", p);
524 if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
525 memset(passwd, 0, sizeof(passwd));
532 ret = krb5_get_init_creds_password (context,
542 krb5_get_init_creds_opt_free(context, opt);
543 if (ntlm_domain && passwd[0])
544 heim_ntlm_nt_key(passwd, &ntlmkey);
545 memset(passwd, 0, sizeof(passwd));
550 case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
552 case KRB5KRB_AP_ERR_BAD_INTEGRITY:
553 case KRB5KRB_AP_ERR_MODIFIED:
554 case KRB5KDC_ERR_PREAUTH_FAILED:
555 krb5_errx(context, 1, "Password incorrect");
557 case KRB5KRB_AP_ERR_V4_REPLY:
558 krb5_errx(context, 1, "Looks like a Kerberos 4 reply");
561 krb5_err(context, 1, ret, "krb5_get_init_creds");
564 if(ticket_life != 0) {
565 if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
567 unparse_time_approx(cred.times.endtime - cred.times.starttime,
569 krb5_warnx(context, "NOTICE: ticket lifetime is %s", life);
573 if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
575 unparse_time_approx(cred.times.renew_till - cred.times.starttime,
577 krb5_warnx(context, "NOTICE: ticket renewable lifetime is %s",
582 ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
585 krb5_err (context, 1, ret, "krb5_cc_new_unique");
587 ret = krb5_cc_initialize (context, tempccache, cred.client);
589 krb5_err (context, 1, ret, "krb5_cc_initialize");
591 ret = krb5_cc_store_cred (context, tempccache, &cred);
593 krb5_err (context, 1, ret, "krb5_cc_store_cred");
595 krb5_free_cred_contents (context, &cred);
597 ret = krb5_cc_move(context, tempccache, ccache);
599 krb5_err (context, 1, ret, "krb5_cc_move");
601 if (ntlm_domain && ntlmkey.data)
602 store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
604 if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
608 if (ok_as_delegate_flag || windows_flag)
610 if (use_referrals_flag || windows_flag)
616 krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
627 ticket_lifetime(krb5_context context, krb5_ccache cache,
628 krb5_principal client, const char *server)
630 krb5_creds in_cred, *cred;
634 memset(&in_cred, 0, sizeof(in_cred));
636 ret = krb5_cc_get_principal(context, cache, &in_cred.client);
638 krb5_warn(context, ret, "krb5_cc_get_principal");
641 ret = get_server(context, in_cred.client, server, &in_cred.server);
643 krb5_free_principal(context, in_cred.client);
644 krb5_warn(context, ret, "get_server");
648 ret = krb5_get_credentials(context, KRB5_GC_CACHED,
649 cache, &in_cred, &cred);
650 krb5_free_principal(context, in_cred.client);
651 krb5_free_principal(context, in_cred.server);
653 krb5_warn(context, ret, "krb5_get_credentials");
656 timeout = cred->times.endtime - cred->times.starttime;
659 krb5_free_creds(context, cred);
664 krb5_context context;
666 krb5_principal principal;
667 krb5_deltat ticket_life;
671 renew_func(void *ptr)
673 struct renew_ctx *ctx = ptr;
678 if (renewable_flag) {
679 ret = renew_validate(ctx->context, renewable_flag, validate_flag,
680 ctx->ccache, server_str, ctx->ticket_life);
687 get_new_tickets(ctx->context, ctx->principal,
688 ctx->ccache, ctx->ticket_life, 0);
690 if(get_v4_tgt || convert_524)
691 do_524init(ctx->context, ctx->ccache, NULL, server_str);
692 if(do_afslog && k_hasafs())
693 krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
695 expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
701 main (int argc, char **argv)
704 krb5_context context;
706 krb5_principal principal;
708 krb5_deltat ticket_life = 0;
711 setprogname (argv[0]);
713 ret = krb5_init_context (&context);
714 if (ret == KRB5_CONFIG_BADFORMAT)
715 errx (1, "krb5_init_context failed to parse configuration file");
717 errx(1, "krb5_init_context failed: %d", ret);
719 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
733 if (canonicalize_flag)
734 parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
737 ret = krb5_parse_name_flags (context, argv[0], parseflags, &principal);
739 krb5_err (context, 1, ret, "krb5_parse_name");
741 ret = krb5_get_default_principal (context, &principal);
743 krb5_err (context, 1, ret, "krb5_get_default_principal");
747 krb5_set_fcache_version(context, fcache_version);
749 if(renewable_flag == -1)
750 /* this seems somewhat pointless, but whatever */
751 krb5_appdefault_boolean(context, "kinit",
752 krb5_principal_get_realm(context, principal),
753 "renewable", FALSE, &renewable_flag);
755 krb5_appdefault_boolean(context, "kinit",
756 krb5_principal_get_realm(context, principal),
757 "krb4_get_tickets", FALSE, &get_v4_tgt);
759 krb5_appdefault_boolean(context, "kinit",
760 krb5_principal_get_realm(context, principal),
761 "afslog", TRUE, &do_afslog);
764 ret = krb5_cc_resolve(context, cred_cache, &ccache);
768 ret = krb5_cc_gen_new(context, &krb5_fcc_ops, &ccache);
770 krb5_err(context, 1, ret, "creating cred cache");
771 snprintf(s, sizeof(s), "%s:%s",
772 krb5_cc_get_type(context, ccache),
773 krb5_cc_get_name(context, ccache));
774 setenv("KRB5CCNAME", s, 1);
777 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
778 krb5_errx(context, 1, "out of memory");
779 if((fd = mkstemp(krb4_cc_name)) >= 0) {
781 setenv("KRBTKFILE", krb4_cc_name, 1);
788 ret = krb5_cc_cache_match(context, principal, NULL, &ccache);
790 ret = krb5_cc_default (context, &ccache);
794 krb5_err (context, 1, ret, "resolving credentials cache");
796 if(argc > 1 && k_hasafs ())
800 int tmp = parse_time (lifetime, "s");
802 errx (1, "unparsable time: %s", lifetime);
807 if(addrs_flag == 0 && extra_addresses.num_strings > 0)
808 krb5_errx(context, 1, "specifying both extra addresses and "
809 "no addresses makes no sense");
812 krb5_addresses addresses;
813 memset(&addresses, 0, sizeof(addresses));
814 for(i = 0; i < extra_addresses.num_strings; i++) {
815 ret = krb5_parse_address(context, extra_addresses.strings[i],
818 krb5_add_extra_addresses(context, &addresses);
819 krb5_free_addresses(context, &addresses);
822 free_getarg_strings(&extra_addresses);
825 if(renew_flag || validate_flag) {
826 ret = renew_validate(context, renew_flag, validate_flag,
827 ccache, server_str, ticket_life);
832 get_new_tickets(context, principal, ccache, ticket_life, 1);
834 if(get_v4_tgt || convert_524)
835 do_524init(context, ccache, NULL, server_str);
836 if(do_afslog && k_hasafs())
837 krb5_afslog(context, ccache, NULL, NULL);
839 struct renew_ctx ctx;
842 timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
844 ctx.context = context;
846 ctx.principal = principal;
847 ctx.ticket_life = ticket_life;
849 ret = simple_execvp_timed(argv[1], argv+1,
850 renew_func, &ctx, timeout);
851 #define EX_NOEXEC 126
852 #define EX_NOTFOUND 127
854 krb5_warnx(context, "permission denied: %s", argv[1]);
855 else if(ret == EX_NOTFOUND)
856 krb5_warnx(context, "command not found: %s", argv[1]);
858 krb5_cc_destroy(context, ccache);
859 _krb5_krb_dest_tkt(context, krb4_cc_name);
863 krb5_cc_close (context, ccache);
866 krb5_free_principal(context, principal);
867 krb5_free_context (context);