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/crypto/heimdal/kuser/kinit.c

https://bitbucket.org/freebsd/freebsd-head/
C | 920 lines | 724 code | 138 blank | 58 comment | 177 complexity | 36cceaa234ebe31071c2b81f0cd75b71 MD5 | raw file
  1/*
  2 * Copyright (c) 1997-2007 Kungliga Tekniska Hรถgskolan
  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 NO_NTLM
 43#include "heimntlm.h"
 44#endif
 45
 46int forwardable_flag	= -1;
 47int proxiable_flag	= -1;
 48int renewable_flag	= -1;
 49int renew_flag		= 0;
 50int pac_flag		= -1;
 51int validate_flag	= 0;
 52int version_flag	= 0;
 53int help_flag		= 0;
 54int addrs_flag		= -1;
 55struct getarg_strings extra_addresses;
 56int anonymous_flag	= 0;
 57char *lifetime 		= NULL;
 58char *renew_life	= NULL;
 59char *server_str	= NULL;
 60char *cred_cache	= NULL;
 61char *start_str		= NULL;
 62static int switch_cache_flags = 1;
 63struct getarg_strings etype_str;
 64int use_keytab		= 0;
 65char *keytab_str	= NULL;
 66int do_afslog		= -1;
 67int fcache_version;
 68char *password_file	= NULL;
 69char *pk_user_id	= NULL;
 70int pk_enterprise_flag = 0;
 71struct hx509_certs_data *ent_user_id = NULL;
 72char *pk_x509_anchors	= NULL;
 73int pk_use_enckey	= 0;
 74static int canonicalize_flag = 0;
 75static int enterprise_flag = 0;
 76static int ok_as_delegate_flag = 0;
 77static int use_referrals_flag = 0;
 78static int windows_flag = 0;
 79#ifndef NO_NTLM
 80static char *ntlm_domain;
 81#endif
 82
 83
 84static struct getargs args[] = {
 85    /*
 86     * used by MIT
 87     * a: ~A
 88     * V: verbose
 89     * F: ~f
 90     * P: ~p
 91     * C: v4 cache name?
 92     * 5:
 93     *
 94     * old flags
 95     * 4:
 96     * 9:
 97     */
 98    { "afslog", 	0  , arg_flag, &do_afslog,
 99      NP_("obtain afs tokens", ""), NULL },
100
101    { "cache", 		'c', arg_string, &cred_cache,
102      NP_("credentials cache", ""), "cachename" },
103
104    { "forwardable",	0, arg_negative_flag, &forwardable_flag,
105      NP_("get tickets not forwardable", ""), NULL },
106
107    { NULL,		'f', arg_flag, &forwardable_flag,
108      NP_("get forwardable tickets", ""), NULL },
109
110    { "keytab",         't', arg_string, &keytab_str,
111      NP_("keytab to use", ""), "keytabname" },
112
113    { "lifetime",	'l', arg_string, &lifetime,
114      NP_("lifetime of tickets", ""), "time" },
115
116    { "proxiable",	'p', arg_flag, &proxiable_flag,
117      NP_("get proxiable tickets", ""), NULL },
118
119    { "renew",          'R', arg_flag, &renew_flag,
120      NP_("renew TGT", ""), NULL },
121
122    { "renewable",	0,   arg_flag, &renewable_flag,
123      NP_("get renewable tickets", ""), NULL },
124
125    { "renewable-life",	'r', arg_string, &renew_life,
126      NP_("renewable lifetime of tickets", ""), "time" },
127
128    { "server", 	'S', arg_string, &server_str,
129      NP_("server to get ticket for", ""), "principal" },
130
131    { "start-time",	's', arg_string, &start_str,
132      NP_("when ticket gets valid", ""), "time" },
133
134    { "use-keytab",     'k', arg_flag, &use_keytab,
135      NP_("get key from keytab", ""), NULL },
136
137    { "validate",	'v', arg_flag, &validate_flag,
138      NP_("validate TGT", ""), NULL },
139
140    { "enctypes",	'e', arg_strings, &etype_str,
141      NP_("encryption types to use", ""), "enctypes" },
142
143    { "fcache-version", 0,   arg_integer, &fcache_version,
144      NP_("file cache version to create", ""), NULL },
145
146    { "addresses",	'A',   arg_negative_flag,	&addrs_flag,
147      NP_("request a ticket with no addresses", ""), NULL },
148
149    { "extra-addresses",'a', arg_strings,	&extra_addresses,
150      NP_("include these extra addresses", ""), "addresses" },
151
152    { "anonymous",	0,   arg_flag,	&anonymous_flag,
153      NP_("request an anonymous ticket", ""), NULL },
154
155    { "request-pac",	0,   arg_flag,	&pac_flag,
156      NP_("request a Windows PAC", ""), NULL },
157
158    { "password-file",	0,   arg_string, &password_file,
159      NP_("read the password from a file", ""), NULL },
160
161    { "canonicalize",0,   arg_flag, &canonicalize_flag,
162      NP_("canonicalize client principal", ""), NULL },
163
164    { "enterprise",0,   arg_flag, &enterprise_flag,
165      NP_("parse principal as a KRB5-NT-ENTERPRISE name", ""), NULL },
166#ifdef PKINIT
167    { "pk-enterprise",	0,	arg_flag,	&pk_enterprise_flag,
168      NP_("use enterprise name from certificate", ""), NULL },
169
170    { "pk-user",	'C',	arg_string,	&pk_user_id,
171      NP_("principal's public/private/certificate identifier", ""), "id" },
172
173    { "x509-anchors",	'D',  arg_string, &pk_x509_anchors,
174      NP_("directory with CA certificates", ""), "directory" },
175
176    { "pk-use-enckey",	0,  arg_flag, &pk_use_enckey,
177      NP_("Use RSA encrypted reply (instead of DH)", ""), NULL },
178#endif
179#ifndef NO_NTLM
180    { "ntlm-domain",	0,  arg_string, &ntlm_domain,
181      NP_("NTLM domain", ""), "domain" },
182#endif
183
184    { "change-default",  0,  arg_negative_flag, &switch_cache_flags,
185      NP_("switch the default cache to the new credentials cache", ""), NULL },
186
187    { "ok-as-delegate",	0,  arg_flag, &ok_as_delegate_flag,
188      NP_("honor ok-as-delegate on tickets", ""), NULL },
189
190    { "use-referrals",	0,  arg_flag, &use_referrals_flag,
191      NP_("only use referrals, no dns canalisation", ""), NULL },
192
193    { "windows",	0,  arg_flag, &windows_flag,
194      NP_("get windows behavior", ""), NULL },
195
196    { "version", 	0,   arg_flag, &version_flag, NULL, NULL },
197    { "help",		0,   arg_flag, &help_flag, NULL, NULL }
198};
199
200static void
201usage (int ret)
202{
203    arg_printusage_i18n (args,
204			 sizeof(args)/sizeof(*args),
205			 N_("Usage: ", ""),
206			 NULL,
207			 "[principal [command]]",
208			 getarg_i18n);
209    exit (ret);
210}
211
212static krb5_error_code
213get_server(krb5_context context,
214	   krb5_principal client,
215	   const char *server,
216	   krb5_principal *princ)
217{
218    krb5_const_realm realm;
219    if(server)
220	return krb5_parse_name(context, server, princ);
221
222    realm = krb5_principal_get_realm(context, client);
223    return krb5_make_principal(context, princ, realm,
224			       KRB5_TGS_NAME, realm, NULL);
225}
226
227static int
228renew_validate(krb5_context context,
229	       int renew,
230	       int validate,
231	       krb5_ccache cache,
232	       const char *server,
233	       krb5_deltat life)
234{
235    krb5_error_code ret;
236    krb5_creds in, *out = NULL;
237    krb5_kdc_flags flags;
238
239    memset(&in, 0, sizeof(in));
240
241    ret = krb5_cc_get_principal(context, cache, &in.client);
242    if(ret) {
243	krb5_warn(context, ret, "krb5_cc_get_principal");
244	return ret;
245    }
246    ret = get_server(context, in.client, server, &in.server);
247    if(ret) {
248	krb5_warn(context, ret, "get_server");
249	goto out;
250    }
251
252    if (renew) {
253	/*
254	 * no need to check the error here, it's only to be
255	 * friendly to the user
256	 */
257	krb5_get_credentials(context, KRB5_GC_CACHED, cache, &in, &out);
258    }
259
260    flags.i = 0;
261    flags.b.renewable         = flags.b.renew = renew;
262    flags.b.validate          = validate;
263
264    if (forwardable_flag != -1)
265	flags.b.forwardable       = forwardable_flag;
266    else if (out)
267	flags.b.forwardable 	  = out->flags.b.forwardable;
268
269    if (proxiable_flag != -1)
270	flags.b.proxiable         = proxiable_flag;
271    else if (out)
272	flags.b.proxiable 	  = out->flags.b.proxiable;
273
274    if (anonymous_flag)
275	flags.b.request_anonymous = anonymous_flag;
276    if(life)
277	in.times.endtime = time(NULL) + life;
278
279    if (out) {
280	krb5_free_creds (context, out);
281	out = NULL;
282    }
283
284
285    ret = krb5_get_kdc_cred(context,
286			    cache,
287			    flags,
288			    NULL,
289			    NULL,
290			    &in,
291			    &out);
292    if(ret) {
293	krb5_warn(context, ret, "krb5_get_kdc_cred");
294	goto out;
295    }
296    ret = krb5_cc_initialize(context, cache, in.client);
297    if(ret) {
298	krb5_free_creds (context, out);
299	krb5_warn(context, ret, "krb5_cc_initialize");
300	goto out;
301    }
302    ret = krb5_cc_store_cred(context, cache, out);
303
304    if(ret == 0 && server == NULL) {
305	/* only do this if it's a general renew-my-tgt request */
306#ifndef NO_AFS
307	if(do_afslog && k_hasafs())
308	    krb5_afslog(context, cache, NULL, NULL);
309#endif
310    }
311
312    krb5_free_creds (context, out);
313    if(ret) {
314	krb5_warn(context, ret, "krb5_cc_store_cred");
315	goto out;
316    }
317out:
318    krb5_free_cred_contents(context, &in);
319    return ret;
320}
321
322#ifndef NO_NTLM
323
324static krb5_error_code
325store_ntlmkey(krb5_context context, krb5_ccache id,
326	      const char *domain, struct ntlm_buf *buf)
327{
328    krb5_error_code ret;
329    krb5_data data;
330    char *name;
331
332    asprintf(&name, "ntlm-key-%s", domain);
333    if (name == NULL) {
334	krb5_clear_error_message(context);
335	return ENOMEM;
336    }
337
338    data.length = buf->length;
339    data.data = buf->data;
340
341    ret = krb5_cc_set_config(context, id, NULL, name, &data);
342    free(name);
343    return ret;
344}
345#endif
346
347static krb5_error_code
348get_new_tickets(krb5_context context,
349		krb5_principal principal,
350		krb5_ccache ccache,
351		krb5_deltat ticket_life,
352		int interactive)
353{
354    krb5_error_code ret;
355    krb5_get_init_creds_opt *opt;
356    krb5_creds cred;
357    char passwd[256];
358    krb5_deltat start_time = 0;
359    krb5_deltat renew = 0;
360    const char *renewstr = NULL;
361    krb5_enctype *enctype = NULL;
362    krb5_ccache tempccache;
363#ifndef NO_NTLM
364    struct ntlm_buf ntlmkey;
365    memset(&ntlmkey, 0, sizeof(ntlmkey));
366#endif
367    passwd[0] = '\0';
368
369    if (password_file) {
370	FILE *f;
371
372	if (strcasecmp("STDIN", password_file) == 0)
373	    f = stdin;
374	else
375	    f = fopen(password_file, "r");
376	if (f == NULL)
377	    krb5_errx(context, 1, "Failed to open the password file %s",
378		      password_file);
379
380	if (fgets(passwd, sizeof(passwd), f) == NULL)
381	    krb5_errx(context, 1,
382		      N_("Failed to read password from file %s", ""),
383		      password_file);
384	if (f != stdin)
385	    fclose(f);
386	passwd[strcspn(passwd, "\n")] = '\0';
387    }
388
389#ifdef __APPLE__
390    if (passwd[0] == '\0') {
391	const char *realm;
392	OSStatus osret;
393	UInt32 length;
394	void *buffer;
395	char *name;
396
397	realm = krb5_principal_get_realm(context, principal);
398
399	ret = krb5_unparse_name_flags(context, principal,
400				      KRB5_PRINCIPAL_UNPARSE_NO_REALM, &name);
401	if (ret)
402	    goto nopassword;
403
404	osret = SecKeychainFindGenericPassword(NULL, strlen(realm), realm,
405					       strlen(name), name,
406					       &length, &buffer, NULL);
407	free(name);
408	if (osret == noErr && length < sizeof(passwd) - 1) {
409	    memcpy(passwd, buffer, length);
410	    passwd[length] = '\0';
411	}
412    nopassword:
413	do { } while(0);
414    }
415#endif
416
417    memset(&cred, 0, sizeof(cred));
418
419    ret = krb5_get_init_creds_opt_alloc (context, &opt);
420    if (ret)
421	krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
422
423    krb5_get_init_creds_opt_set_default_flags(context, "kinit",
424	krb5_principal_get_realm(context, principal), opt);
425
426    if(forwardable_flag != -1)
427	krb5_get_init_creds_opt_set_forwardable (opt, forwardable_flag);
428    if(proxiable_flag != -1)
429	krb5_get_init_creds_opt_set_proxiable (opt, proxiable_flag);
430    if(anonymous_flag)
431	krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
432    if (pac_flag != -1)
433	krb5_get_init_creds_opt_set_pac_request(context, opt,
434						pac_flag ? TRUE : FALSE);
435    if (canonicalize_flag)
436	krb5_get_init_creds_opt_set_canonicalize(context, opt, TRUE);
437    if (pk_enterprise_flag || enterprise_flag || canonicalize_flag || windows_flag)
438	krb5_get_init_creds_opt_set_win2k(context, opt, TRUE);
439    if (pk_user_id || ent_user_id || anonymous_flag) {
440	ret = krb5_get_init_creds_opt_set_pkinit(context, opt,
441						 principal,
442						 pk_user_id,
443						 pk_x509_anchors,
444						 NULL,
445						 NULL,
446						 pk_use_enckey ? 2 : 0 |
447						 anonymous_flag ? 4 : 0,
448						 krb5_prompter_posix,
449						 NULL,
450						 passwd);
451	if (ret)
452	    krb5_err(context, 1, ret, "krb5_get_init_creds_opt_set_pkinit");
453	if (ent_user_id)
454	    krb5_get_init_creds_opt_set_pkinit_user_certs(context, opt, ent_user_id);
455    }
456
457    if (addrs_flag != -1)
458	krb5_get_init_creds_opt_set_addressless(context, opt,
459						addrs_flag ? FALSE : TRUE);
460
461    if (renew_life == NULL && renewable_flag)
462	renewstr = "1 month";
463    if (renew_life)
464	renewstr = renew_life;
465    if (renewstr) {
466	renew = parse_time (renewstr, "s");
467	if (renew < 0)
468	    errx (1, "unparsable time: %s", renewstr);
469
470	krb5_get_init_creds_opt_set_renew_life (opt, renew);
471    }
472
473    if(ticket_life != 0)
474	krb5_get_init_creds_opt_set_tkt_life (opt, ticket_life);
475
476    if(start_str) {
477	int tmp = parse_time (start_str, "s");
478	if (tmp < 0)
479	    errx (1, N_("unparsable time: %s", ""), start_str);
480
481	start_time = tmp;
482    }
483
484    if(etype_str.num_strings) {
485	int i;
486
487	enctype = malloc(etype_str.num_strings * sizeof(*enctype));
488	if(enctype == NULL)
489	    errx(1, "out of memory");
490	for(i = 0; i < etype_str.num_strings; i++) {
491	    ret = krb5_string_to_enctype(context,
492					 etype_str.strings[i],
493					 &enctype[i]);
494	    if(ret)
495		errx(1, "unrecognized enctype: %s", etype_str.strings[i]);
496	}
497	krb5_get_init_creds_opt_set_etype_list(opt, enctype,
498					       etype_str.num_strings);
499    }
500
501    if(use_keytab || keytab_str) {
502	krb5_keytab kt;
503	if(keytab_str)
504	    ret = krb5_kt_resolve(context, keytab_str, &kt);
505	else
506	    ret = krb5_kt_default(context, &kt);
507	if (ret)
508	    krb5_err (context, 1, ret, "resolving keytab");
509	ret = krb5_get_init_creds_keytab (context,
510					  &cred,
511					  principal,
512					  kt,
513					  start_time,
514					  server_str,
515					  opt);
516	krb5_kt_close(context, kt);
517    } else if (pk_user_id || ent_user_id || anonymous_flag) {
518	ret = krb5_get_init_creds_password (context,
519					    &cred,
520					    principal,
521					    passwd,
522					    krb5_prompter_posix,
523					    NULL,
524					    start_time,
525					    server_str,
526					    opt);
527    } else if (!interactive) {
528	krb5_warnx(context, "Not interactive, failed to get initial ticket");
529	krb5_get_init_creds_opt_free(context, opt);
530	return 0;
531    } else {
532
533	if (passwd[0] == '\0') {
534	    char *p, *prompt;
535
536	    krb5_unparse_name (context, principal, &p);
537	    asprintf (&prompt, N_("%s's Password: ", ""), p);
538	    free (p);
539
540	    if (UI_UTIL_read_pw_string(passwd, sizeof(passwd)-1, prompt, 0)){
541		memset(passwd, 0, sizeof(passwd));
542		exit(1);
543	    }
544	    free (prompt);
545	}
546
547
548	ret = krb5_get_init_creds_password (context,
549					    &cred,
550					    principal,
551					    passwd,
552					    krb5_prompter_posix,
553					    NULL,
554					    start_time,
555					    server_str,
556					    opt);
557    }
558    krb5_get_init_creds_opt_free(context, opt);
559#ifndef NO_NTLM
560    if (ntlm_domain && passwd[0])
561	heim_ntlm_nt_key(passwd, &ntlmkey);
562#endif
563    memset(passwd, 0, sizeof(passwd));
564
565    switch(ret){
566    case 0:
567	break;
568    case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
569	exit(1);
570    case KRB5KRB_AP_ERR_BAD_INTEGRITY:
571    case KRB5KRB_AP_ERR_MODIFIED:
572    case KRB5KDC_ERR_PREAUTH_FAILED:
573	krb5_errx(context, 1, N_("Password incorrect", ""));
574	break;
575    case KRB5KRB_AP_ERR_V4_REPLY:
576	krb5_errx(context, 1, N_("Looks like a Kerberos 4 reply", ""));
577	break;
578    default:
579	krb5_err(context, 1, ret, "krb5_get_init_creds");
580    }
581
582    if(ticket_life != 0) {
583	if(abs(cred.times.endtime - cred.times.starttime - ticket_life) > 30) {
584	    char life[64];
585	    unparse_time_approx(cred.times.endtime - cred.times.starttime,
586				life, sizeof(life));
587	    krb5_warnx(context, N_("NOTICE: ticket lifetime is %s", ""), life);
588	}
589    }
590    if(renew_life) {
591	if(abs(cred.times.renew_till - cred.times.starttime - renew) > 30) {
592	    char life[64];
593	    unparse_time_approx(cred.times.renew_till - cred.times.starttime,
594				life, sizeof(life));
595	    krb5_warnx(context,
596		       N_("NOTICE: ticket renewable lifetime is %s", ""),
597		       life);
598	}
599    }
600
601    ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, ccache),
602			     NULL, &tempccache);
603    if (ret)
604	krb5_err (context, 1, ret, "krb5_cc_new_unique");
605
606    ret = krb5_cc_initialize (context, tempccache, cred.client);
607    if (ret)
608	krb5_err (context, 1, ret, "krb5_cc_initialize");
609
610    ret = krb5_cc_store_cred (context, tempccache, &cred);
611    if (ret)
612	krb5_err (context, 1, ret, "krb5_cc_store_cred");
613
614    krb5_free_cred_contents (context, &cred);
615
616    ret = krb5_cc_move(context, tempccache, ccache);
617    if (ret)
618	krb5_err (context, 1, ret, "krb5_cc_move");
619
620    if (switch_cache_flags)
621	krb5_cc_switch(context, ccache);
622
623#ifndef NO_NTLM
624    if (ntlm_domain && ntlmkey.data)
625	store_ntlmkey(context, ccache, ntlm_domain, &ntlmkey);
626#endif
627
628    if (ok_as_delegate_flag || windows_flag || use_referrals_flag) {
629	unsigned char d = 0;
630	krb5_data data;
631
632	if (ok_as_delegate_flag || windows_flag)
633	    d |= 1;
634	if (use_referrals_flag || windows_flag)
635	    d |= 2;
636
637	data.length = 1;
638	data.data = &d;
639
640	krb5_cc_set_config(context, ccache, NULL, "realm-config", &data);
641    }
642
643
644    if (enctype)
645	free(enctype);
646
647    return 0;
648}
649
650static time_t
651ticket_lifetime(krb5_context context, krb5_ccache cache,
652		krb5_principal client, const char *server)
653{
654    krb5_creds in_cred, *cred;
655    krb5_error_code ret;
656    time_t timeout;
657
658    memset(&in_cred, 0, sizeof(in_cred));
659
660    ret = krb5_cc_get_principal(context, cache, &in_cred.client);
661    if(ret) {
662	krb5_warn(context, ret, "krb5_cc_get_principal");
663	return 0;
664    }
665    ret = get_server(context, in_cred.client, server, &in_cred.server);
666    if(ret) {
667	krb5_free_principal(context, in_cred.client);
668	krb5_warn(context, ret, "get_server");
669	return 0;
670    }
671
672    ret = krb5_get_credentials(context, KRB5_GC_CACHED,
673			       cache, &in_cred, &cred);
674    krb5_free_principal(context, in_cred.client);
675    krb5_free_principal(context, in_cred.server);
676    if(ret) {
677	krb5_warn(context, ret, "krb5_get_credentials");
678	return 0;
679    }
680    timeout = cred->times.endtime - cred->times.starttime;
681    if (timeout < 0)
682	timeout = 0;
683    krb5_free_creds(context, cred);
684    return timeout;
685}
686
687struct renew_ctx {
688    krb5_context context;
689    krb5_ccache  ccache;
690    krb5_principal principal;
691    krb5_deltat ticket_life;
692};
693
694static time_t
695renew_func(void *ptr)
696{
697    struct renew_ctx *ctx = ptr;
698    krb5_error_code ret;
699    time_t expire;
700    int new_tickets = 0;
701
702    if (renewable_flag) {
703	ret = renew_validate(ctx->context, renewable_flag, validate_flag,
704			     ctx->ccache, server_str, ctx->ticket_life);
705	if (ret)
706	    new_tickets = 1;
707    } else
708	new_tickets = 1;
709
710    if (new_tickets)
711	get_new_tickets(ctx->context, ctx->principal,
712			ctx->ccache, ctx->ticket_life, 0);
713
714#ifndef NO_AFS
715    if(do_afslog && k_hasafs())
716	krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
717#endif
718
719    expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
720			     server_str) / 2;
721    return expire + 1;
722}
723
724int
725main (int argc, char **argv)
726{
727    krb5_error_code ret;
728    krb5_context context;
729    krb5_ccache  ccache;
730    krb5_principal principal;
731    int optidx = 0;
732    krb5_deltat ticket_life = 0;
733    int parseflags = 0;
734
735    setprogname (argv[0]);
736
737    setlocale (LC_ALL, "");
738    bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
739    textdomain("heimdal_kuser");
740
741    ret = krb5_init_context (&context);
742    if (ret == KRB5_CONFIG_BADFORMAT)
743	errx (1, "krb5_init_context failed to parse configuration file");
744    else if (ret)
745	errx(1, "krb5_init_context failed: %d", ret);
746
747    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
748	usage(1);
749
750    if (help_flag)
751	usage (0);
752
753    if(version_flag) {
754	print_version(NULL);
755	exit(0);
756    }
757
758    argc -= optidx;
759    argv += optidx;
760
761    if (canonicalize_flag || enterprise_flag)
762	parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
763
764    if (pk_enterprise_flag) {
765	ret = krb5_pk_enterprise_cert(context, pk_user_id,
766				      argv[0], &principal,
767				      &ent_user_id);
768	if (ret)
769	    krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
770
771	pk_user_id = NULL;
772
773    } else if (anonymous_flag) {
774
775	ret = krb5_make_principal(context, &principal, argv[0],
776				  KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
777				  NULL);
778	if (ret)
779	    krb5_err(context, 1, ret, "krb5_make_principal");
780	krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
781
782    } else {
783	if (argv[0]) {
784	    ret = krb5_parse_name_flags (context, argv[0], parseflags,
785					 &principal);
786	    if (ret)
787		krb5_err (context, 1, ret, "krb5_parse_name");
788	} else {
789	    ret = krb5_get_default_principal (context, &principal);
790	    if (ret)
791		krb5_err (context, 1, ret, "krb5_get_default_principal");
792	}
793    }
794
795    if(fcache_version)
796	krb5_set_fcache_version(context, fcache_version);
797
798    if(renewable_flag == -1)
799	/* this seems somewhat pointless, but whatever */
800	krb5_appdefault_boolean(context, "kinit",
801				krb5_principal_get_realm(context, principal),
802				"renewable", FALSE, &renewable_flag);
803    if(do_afslog == -1)
804	krb5_appdefault_boolean(context, "kinit",
805				krb5_principal_get_realm(context, principal),
806				"afslog", TRUE, &do_afslog);
807
808    if(cred_cache)
809	ret = krb5_cc_resolve(context, cred_cache, &ccache);
810    else {
811	if(argc > 1) {
812	    char s[1024];
813	    ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
814	    if(ret)
815		krb5_err(context, 1, ret, "creating cred cache");
816	    snprintf(s, sizeof(s), "%s:%s",
817		     krb5_cc_get_type(context, ccache),
818		     krb5_cc_get_name(context, ccache));
819	    setenv("KRB5CCNAME", s, 1);
820	} else {
821	    ret = krb5_cc_cache_match(context, principal, &ccache);
822	    if (ret) {
823		const char *type;
824		ret = krb5_cc_default (context, &ccache);
825		if (ret)
826		    krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
827
828		/*
829		 * Check if the type support switching, and we do,
830		 * then do that instead over overwriting the current
831		 * default credential
832		 */
833		type = krb5_cc_get_type(context, ccache);
834		if (krb5_cc_support_switch(context, type)) {
835		    krb5_cc_close(context, ccache);
836		    ret = krb5_cc_new_unique(context, type, NULL, &ccache);
837		}
838	    }
839	}
840    }
841    if (ret)
842	krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
843
844#ifndef NO_AFS
845    if(argc > 1 && k_hasafs ())
846	k_setpag();
847#endif
848
849    if (lifetime) {
850	int tmp = parse_time (lifetime, "s");
851	if (tmp < 0)
852	    errx (1, N_("unparsable time: %s", ""), lifetime);
853
854	ticket_life = tmp;
855    }
856
857    if(addrs_flag == 0 && extra_addresses.num_strings > 0)
858	krb5_errx(context, 1,
859		  N_("specifying both extra addresses and "
860		     "no addresses makes no sense", ""));
861    {
862	int i;
863	krb5_addresses addresses;
864	memset(&addresses, 0, sizeof(addresses));
865	for(i = 0; i < extra_addresses.num_strings; i++) {
866	    ret = krb5_parse_address(context, extra_addresses.strings[i],
867				     &addresses);
868	    if (ret == 0) {
869		krb5_add_extra_addresses(context, &addresses);
870		krb5_free_addresses(context, &addresses);
871	    }
872	}
873	free_getarg_strings(&extra_addresses);
874    }
875
876    if(renew_flag || validate_flag) {
877	ret = renew_validate(context, renew_flag, validate_flag,
878			     ccache, server_str, ticket_life);
879	exit(ret != 0);
880    }
881
882    get_new_tickets(context, principal, ccache, ticket_life, 1);
883
884#ifndef NO_AFS
885    if(do_afslog && k_hasafs())
886	krb5_afslog(context, ccache, NULL, NULL);
887#endif
888    if(argc > 1) {
889	struct renew_ctx ctx;
890	time_t timeout;
891
892	timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
893
894	ctx.context = context;
895	ctx.ccache = ccache;
896	ctx.principal = principal;
897	ctx.ticket_life = ticket_life;
898
899	ret = simple_execvp_timed(argv[1], argv+1,
900				  renew_func, &ctx, timeout);
901#define EX_NOEXEC	126
902#define EX_NOTFOUND	127
903	if(ret == EX_NOEXEC)
904	    krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
905	else if(ret == EX_NOTFOUND)
906	    krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
907
908	krb5_cc_destroy(context, ccache);
909#ifndef NO_AFS
910	if(k_hasafs())
911	    k_unlog();
912#endif
913    } else {
914	krb5_cc_close (context, ccache);
915	ret = 0;
916    }
917    krb5_free_principal(context, principal);
918    krb5_free_context (context);
919    return ret;
920}