2 * Copyright (c) 1997-2006 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 21483 2007-07-10 16:40:46Z 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, its 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;
381 memset(&ntlmkey, 0, sizeof(ntlmkey));
387 if (strcasecmp("STDIN", password_file) == 0)
390 f = fopen(password_file, "r");
392 krb5_errx(context, 1, "Failed to open the password file %s",
395 if (fgets(passwd, sizeof(passwd), f) == NULL)
396 krb5_errx(context, 1,
397 "Failed to read password from file %s", password_file);
400 passwd[strcspn(passwd, "\n")] = '\0';
404 memset(&cred, 0, sizeof(cred));
406 ret = krb5_get_init_creds_opt_alloc (context, &opt);
408 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
410 krb5_get_init_creds_opt_set_default_flags(context, "kinit",
411 krb5_principal_get_realm(context, principal), opt);
413 if(forwardable_flag != -1)
414 krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
415 if(proxiable_flag != -1)
416 krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
417 if(anonymous_flag != -1)
418 krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
420 krb5_get_init_creds_opt_set_pac_request(context, opt,
421 pac_flag ? TRUE : FALSE);
422 if (canonicalize_flag)
423 krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
425 ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
431 pk_use_enckey ? 2 : 0,
436 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
439 if (addrs_flag != -1)
440 krb5_get_init_creds_opt_set_addressless(context, opt,
441 addrs_flag ? FALSE : TRUE);
443 if (renew_life == NULL && renewable_flag)
444 renewstr = "1 month";
446 renewstr = renew_life;
448 renew = parse_time (renewstr, "s");
450 errx (1, "unparsable time: %s", renewstr);
452 krb5_get_init_creds_opt_set_renew_life (opt, renew);
456 krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
459 int tmp = parse_time (start_str, "s");
461 errx (1, "unparsable time: %s", start_str);
466 if(etype_str.num_strings) {
469 enctype = malloc(etype_str.num_strings * sizeof(*enctype));
471 errx(1, "out of memory");
472 for(i = 0; i < etype_str.num_strings; i++) {
473 ret = krb5_string_to_enctype(context,
474 etype_str.strings[i],
477 errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
479 krb5_get_init_creds_opt_set_etype_list(opt, enctype,
480 etype_str.num_strings);
483 if(use_keytab || keytab_str) {
486 ret = krb5_kt_resolve(context, keytab_str, &kt);
488 ret = krb5_kt_default(context, &kt);
490 krb5_err (context, 1, ret, "resolving keytab");
491 ret = krb5_get_init_creds_keytab (context,
498 krb5_kt_close(context, kt);
499 } else if (pk_user_id) {
500 ret = krb5_get_init_creds_password (context,
509 } else if (!interactive) {
510 krb5_warnx(context, "Not interactive, failed to get initial ticket");
511 krb5_get_init_creds_opt_free(context, opt);
515 if (passwd[0] == '\0') {
518 krb5_unparse_name (context, principal, &p);
519 asprintf (&prompt, "%s's Password: ", p);
522 if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
523 memset(passwd, 0, sizeof(passwd));
530 ret = krb5_get_init_creds_password (context,
540 krb5_get_init_creds_opt_free(context, opt);
541 if (ntlm_domain && passwd[0])
542 heim_ntlm_nt_key(passwd, &ntlmkey);
543 memset(passwd, 0, sizeof(passwd));
548 case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
550 case KRB5KRB_AP_ERR_BAD_INTEGRITY:
551 case KRB5KRB_AP_ERR_MODIFIED:
552 case KRB5KDC_ERR_PREAUTH_FAILED:
553 krb5_errx(context, 1, "Password incorrect");
555 case KRB5KRB_AP_ERR_V4_REPLY:
556 krb5_errx(context, 1, "Looks like a Kerberos 4 reply");
559 krb5_err(context, 1, ret, "krb5_get_init_creds");
562 if(ticket_life != 0) {
563 if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
565 unparse_time_approx(cred.times.endtime - cred.times.starttime,
567 krb5_warnx(context, "NOTICE: ticket lifetime is %s", life);
571 if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
573 unparse_time_approx(cred.times.renew_till - cred.times.starttime,
575 krb5_warnx(context, "NOTICE: ticket renewable lifetime is %s",
580 ret = krb5_cc_initialize (context, ccache, cred.client);
582 krb5_err (context, 1, ret, "krb5_cc_initialize");
584 ret = krb5_cc_store_cred (context, ccache, &cred);
586 krb5_err (context, 1, ret, "krb5_cc_store_cred");
588 krb5_free_cred_contents (context, &cred);
590 if (ntlm_domain && ntlmkey.data)
591 store_ntlmkey(context, ccache, ntlm_domain, principal, &ntlmkey);
600 ticket_lifetime(krb5_context context, krb5_ccache cache,
601 krb5_principal client, const char *server)
603 krb5_creds in_cred, *cred;
607 memset(&in_cred, 0, sizeof(in_cred));
609 ret = krb5_cc_get_principal(context, cache, &in_cred.client);
611 krb5_warn(context, ret, "krb5_cc_get_principal");
614 ret = get_server(context, in_cred.client, server, &in_cred.server);
616 krb5_free_principal(context, in_cred.client);
617 krb5_warn(context, ret, "get_server");
621 ret = krb5_get_credentials(context, KRB5_GC_CACHED,
622 cache, &in_cred, &cred);
623 krb5_free_principal(context, in_cred.client);
624 krb5_free_principal(context, in_cred.server);
626 krb5_warn(context, ret, "krb5_get_credentials");
629 timeout = cred->times.endtime - cred->times.starttime;
632 krb5_free_creds(context, cred);
637 krb5_context context;
639 krb5_principal principal;
640 krb5_deltat ticket_life;
644 renew_func(void *ptr)
646 struct renew_ctx *ctx = ptr;
651 if (renewable_flag) {
652 ret = renew_validate(ctx->context, renewable_flag, validate_flag,
653 ctx->ccache, server_str, ctx->ticket_life);
660 get_new_tickets(ctx->context, ctx->principal,
661 ctx->ccache, ctx->ticket_life, 0);
663 if(get_v4_tgt || convert_524)
664 do_524init(ctx->context, ctx->ccache, NULL, server_str);
665 if(do_afslog && k_hasafs())
666 krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
668 expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
674 main (int argc, char **argv)
677 krb5_context context;
679 krb5_principal principal;
681 krb5_deltat ticket_life = 0;
684 setprogname (argv[0]);
686 ret = krb5_init_context (&context);
687 if (ret == KRB5_CONFIG_BADFORMAT)
688 errx (1, "krb5_init_context failed to parse configuration file");
690 errx(1, "krb5_init_context failed: %d", ret);
692 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
706 if (canonicalize_flag)
707 parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
710 ret = krb5_parse_name_flags (context, argv[0], parseflags, &principal);
712 krb5_err (context, 1, ret, "krb5_parse_name");
714 ret = krb5_get_default_principal (context, &principal);
716 krb5_err (context, 1, ret, "krb5_get_default_principal");
720 krb5_set_fcache_version(context, fcache_version);
722 if(renewable_flag == -1)
723 /* this seems somewhat pointless, but whatever */
724 krb5_appdefault_boolean(context, "kinit",
725 krb5_principal_get_realm(context, principal),
726 "renewable", FALSE, &renewable_flag);
728 krb5_appdefault_boolean(context, "kinit",
729 krb5_principal_get_realm(context, principal),
730 "krb4_get_tickets", FALSE, &get_v4_tgt);
732 krb5_appdefault_boolean(context, "kinit",
733 krb5_principal_get_realm(context, principal),
734 "afslog", TRUE, &do_afslog);
737 ret = krb5_cc_resolve(context, cred_cache, &ccache);
741 ret = krb5_cc_gen_new(context, &krb5_fcc_ops, &ccache);
743 krb5_err(context, 1, ret, "creating cred cache");
744 snprintf(s, sizeof(s), "%s:%s",
745 krb5_cc_get_type(context, ccache),
746 krb5_cc_get_name(context, ccache));
747 setenv("KRB5CCNAME", s, 1);
750 if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
751 krb5_errx(context, 1, "out of memory");
752 if((fd = mkstemp(krb4_cc_name)) >= 0) {
754 setenv("KRBTKFILE", krb4_cc_name, 1);
761 ret = krb5_cc_default (context, &ccache);
764 krb5_err (context, 1, ret, "resolving credentials cache");
766 if(argc > 1 && k_hasafs ())
770 int tmp = parse_time (lifetime, "s");
772 errx (1, "unparsable time: %s", lifetime);
777 if(addrs_flag == 0 && extra_addresses.num_strings > 0)
778 krb5_errx(context, 1, "specifying both extra addresses and "
779 "no addresses makes no sense");
782 krb5_addresses addresses;
783 memset(&addresses, 0, sizeof(addresses));
784 for(i = 0; i < extra_addresses.num_strings; i++) {
785 ret = krb5_parse_address(context, extra_addresses.strings[i],
788 krb5_add_extra_addresses(context, &addresses);
789 krb5_free_addresses(context, &addresses);
792 free_getarg_strings(&extra_addresses);
795 if(renew_flag || validate_flag) {
796 ret = renew_validate(context, renew_flag, validate_flag,
797 ccache, server_str, ticket_life);
802 get_new_tickets(context, principal, ccache, ticket_life, 1);
804 if(get_v4_tgt || convert_524)
805 do_524init(context, ccache, NULL, server_str);
806 if(do_afslog && k_hasafs())
807 krb5_afslog(context, ccache, NULL, NULL);
809 struct renew_ctx ctx;
812 timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
814 ctx.context = context;
816 ctx.principal = principal;
817 ctx.ticket_life = ticket_life;
819 ret = simple_execvp_timed(argv[1], argv+1,
820 renew_func, &ctx, timeout);
821 #define EX_NOEXEC 126
822 #define EX_NOTFOUND 127
824 krb5_warnx(context, "permission denied: %s", argv[1]);
825 else if(ret == EX_NOTFOUND)
826 krb5_warnx(context, "command not found: %s", argv[1]);
828 krb5_cc_destroy(context, ccache);
829 _krb5_krb_dest_tkt(context, krb4_cc_name);
833 krb5_cc_close (context, ccache);
836 krb5_free_principal(context, principal);
837 krb5_free_context (context);