summaryrefslogtreecommitdiffstats
path: root/crypto/kerberosIV/kadmin/kadmin.c
blob: f117b6b36a350d1a534cc782fe68710e133c889f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
/* 
  Copyright (C) 1989 by the Massachusetts Institute of Technology

   Export of this software from the United States of America is assumed
   to require a specific license from the United States Government.
   It is the responsibility of any person or organization contemplating
   export to obtain such a license before exporting.

WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
distribute this software and its documentation for any purpose and
without fee is hereby granted, provided that the above copyright
notice appear in all copies and that both that copyright notice and
this permission notice appear in supporting documentation, and that
the name of M.I.T. not be used in advertising or publicity pertaining
to distribution of the software without specific, written prior
permission.  M.I.T. makes no representations about the suitability of
this software for any purpose.  It is provided "as is" without express
or implied warranty.

  */

/*
 * Kerberos database administrator's tool.  
 * 
 * The default behavior of kadmin is if the -m option is given 
 * on the commandline, multiple requests are allowed to be given
 * with one entry of the admin password (until the tickets expire).
 */

#include "kadm_locl.h"

RCSID("$Id: kadmin.c,v 1.48 1997/05/13 09:43:06 bg Exp $");

static void change_password(int argc, char **argv);
static void change_key(int argc, char **argv);
static void change_admin_password(int argc, char **argv);
static void add_new_key(int argc, char **argv);
static void del_entry(int argc, char **argv);
static void get_entry(int argc, char **argv);
static void mod_entry(int argc, char **argv);
static void help(int argc, char **argv);
static void clean_up_cmd(int argc, char **argv);
static void quit_cmd(int argc, char **argv);

static SL_cmd cmds[] = {
  {"change_password", change_password, "Change a user's password"},
  {"cpw"},
  {"passwd"},
  {"change_key", change_key, "Change a user's password as a DES binary key"},
  {"ckey"},
  {"change_admin_password", change_admin_password,
   "Change your admin password"},
  {"cap"},
  {"add_new_key", add_new_key, "Add new user to kerberos database"},
  {"ank"},
  {"del_entry", del_entry, "Delete entry from database"},
  {"del"},
  {"delete"},
  {"get_entry", get_entry, "Get entry from kerberos database"},
  {"mod_entry", mod_entry, "Modify entry in kerberos database"},
  {"destroy_tickets", clean_up_cmd, "Destroy admin tickets"},
  {"exit", quit_cmd, "Exit program"},
  {"quit"},
  {"help", help, "Help"},
  {"?"},
  {NULL}
};

#define BAD_PW 1
#define GOOD_PW 0
#define FUDGE_VALUE 15		/* for ticket expiration time */
#define PE_NO 0
#define PE_YES 1
#define PE_UNSURE 2

/* for get_password, whether it should do the swapping...necessary for
   using vals structure, unnecessary for change_pw requests */
#define DONTSWAP 0
#define SWAP 1

static krb_principal pr;
static char default_realm[REALM_SZ]; /* default kerberos realm */
static char krbrlm[REALM_SZ];	/* current realm being administered */
static int multiple = 0;	/* Allow multiple requests per ticket */

#ifdef NOENCRYPTION
#define read_long_pw_string placebo_read_pw_string
#else
#define read_long_pw_string des_read_pw_string
#endif

static void
get_maxlife(Kadm_vals *vals)
{
    char buff[BUFSIZ];
    time_t life;
    int l;

    do {
	printf("Maximum ticket lifetime?  (%d)  [%s]  ",
 	     vals->max_life, krb_life_to_atime(vals->max_life));
	fflush(stdout);
	if (fgets(buff, sizeof(buff), stdin) == NULL || *buff == '\n') {
	    clearerr(stdin);
	    return;
	}
	life = krb_atime_to_life(buff);
    } while (life <= 0);

    l = strlen(buff);
    if (buff[l-2] == 'm')
	life = krb_time_to_life(0L, life*60);
    if (buff[l-2] == 'h')
	life = krb_time_to_life(0L, life*60*60);

    vals->max_life = life;
    SET_FIELD(KADM_MAXLIFE,vals->fields);
}

static void
get_attr(Kadm_vals *vals)
{
    char buff[BUFSIZ], *out;
    int attr;

    do {
	printf("Attributes?  [0x%.2x]  ", vals->attributes);
	fflush(stdout);
	if (fgets(buff, sizeof(buff), stdin) == NULL || *buff == '\n') {
	    clearerr(stdin);
	    return;
	}
        attr = strtol(buff, &out, 0);
	if (attr == 0 && out == buff)
	  attr = -1;
    } while (attr < 0 || attr > 0xffff);

    vals->attributes = attr;
    SET_FIELD(KADM_ATTR,vals->fields);
}

static void
get_expdate(Kadm_vals *vals)
{
    char buff[BUFSIZ];
    struct tm edate;

    memset(&edate, 0, sizeof(edate));
    do {
        printf("Expiration date (enter yyyy-mm-dd) ?  [%.24s]  ",
             asctime(k_localtime(&vals->exp_date)));
        fflush(stdout);
        if (fgets(buff, sizeof(buff), stdin) == NULL || *buff == '\n') {
            clearerr(stdin);
            return;
        }
        if (sscanf(buff, "%d-%d-%d",
                   &edate.tm_year, &edate.tm_mon, &edate.tm_mday) == 3) {
            edate.tm_mon--;     /* January is 0, not 1 */
            edate.tm_hour = 23; /* nearly midnight at the end of the */
            edate.tm_min = 59;  /* specified day */
        }
    } while (krb_check_tm (edate));

    edate.tm_year -= 1900;
    vals->exp_date = tm2time (edate, 1);
    SET_FIELD(KADM_EXPDATE,vals->fields);
}

static int
princ_exists(char *name, char *instance, char *realm)
{
    int status;

    status = krb_get_pw_in_tkt(name, instance, realm,
			       KRB_TICKET_GRANTING_TICKET,
			       realm, 1, "");

    if ((status == KSUCCESS) || (status == INTK_BADPW))
	return(PE_YES);
    else if (status == KDC_PR_UNKNOWN)
	return(PE_NO);
    else
	return(PE_UNSURE);
}

static int
get_password(u_int32_t *low, u_int32_t *high, char *prompt, int byteswap)
{
    char new_passwd[MAX_KPW_LEN];	/* new password */
    des_cblock newkey;

    if (read_long_pw_string(new_passwd, sizeof(new_passwd)-1, prompt, 1))
    	return(BAD_PW);
    if (strlen(new_passwd) == 0) {
    	printf("Using random password.\n");
#ifdef NOENCRYPTION
	memset(newkey, 0, sizeof(newkey));
#else
	des_new_random_key(&newkey);
#endif
    } else {
#ifdef NOENCRYPTION
      memset(newkey, 0, sizeof(newkey));
#else
      des_string_to_key(new_passwd, &newkey);
#endif
      memset(new_passwd, 0, sizeof(new_passwd));
    }

    memcpy(low, newkey, 4);
    memcpy(high, ((char *)newkey) + 4, 4);

    memset(newkey, 0, sizeof(newkey));

#ifdef NOENCRYPTION
    *low = 1;
#endif

    if (byteswap != DONTSWAP) {
	*low = htonl(*low);
	*high = htonl(*high);
    }
    return(GOOD_PW);
}

static int
get_admin_password(void)
{
    int status;
    char admin_passwd[MAX_KPW_LEN];	/* Admin's password */
    int ticket_life = 1;	/* minimum ticket lifetime */
    CREDENTIALS c;

    if (multiple) {
	/* If admin tickets exist and are valid, just exit. */
	memset(&c, 0, sizeof(c));
	if (krb_get_cred(PWSERV_NAME, KADM_SINST, krbrlm, &c) == KSUCCESS)
	    /* 
	     * If time is less than lifetime - FUDGE_VALUE after issue date,
	     * tickets will probably last long enough for the next 
	     * transaction.
	     */
	    if (time(0) < (c.issue_date + (5 * 60 * c.lifetime) - FUDGE_VALUE))
		return(KADM_SUCCESS);
	ticket_life = DEFAULT_TKT_LIFE;
    }
    
    if (princ_exists(pr.name, pr.instance, pr.realm) != PE_NO) {
        char prompt[256];
	snprintf(prompt, sizeof(prompt), "%s's Password: ", krb_unparse_name(&pr));
	if (read_long_pw_string(admin_passwd,
				sizeof(admin_passwd)-1,
				prompt, 0)) {
	    warnx ("Error reading admin password.");
	    goto bad;
	}
	status = krb_get_pw_in_tkt(pr.name, pr.instance, pr.realm,
				   PWSERV_NAME, KADM_SINST,
				   ticket_life, admin_passwd);
	memset(admin_passwd, 0, sizeof(admin_passwd));

	/* Initialize non shared random sequence from session key. */
	memset(&c, 0, sizeof(c));
	krb_get_cred(PWSERV_NAME, KADM_SINST, krbrlm, &c);
	des_init_random_number_generator(&c.session);
    }
    else
	status = KDC_PR_UNKNOWN;

    switch(status) {
    case GT_PW_OK:
	return(GOOD_PW);
    case KDC_PR_UNKNOWN:
	printf("Principal %s does not exist.\n", krb_unparse_name(&pr));
	goto bad;
    case GT_PW_BADPW:
	printf("Incorrect admin password.\n");
	goto bad;
    default:
	com_err("kadmin", status+krb_err_base,
		"while getting password tickets");
	goto bad;
    }
    
 bad:
    memset(admin_passwd, 0, sizeof(admin_passwd));
    dest_tkt();
    return(BAD_PW);
}

static void
usage(void)
{
    fprintf (stderr, "Usage: kadmin [[-u|-p] admin_name] [-r default_realm]"
	     " [-m]\n"
	     "   -m allows multiple admin requests to be "
	     "serviced with one entry of admin\n"	     
	     "   password.\n");
    exit (1);
}

/* GLOBAL */
static void
clean_up()
{
    dest_tkt();
}

static void
clean_up_cmd (int argc, char **argv)
{
    clean_up();
}

/* GLOBAL */
static void 
quit()
{
    printf("Cleaning up and exiting.\n");
    clean_up();
    exit(0);
}

static void
quit_cmd (int argc, char **argv)
{
    quit();
}

static void
do_init(int argc, char **argv)
{
    int c;
    int tflag = 0;
    char tktstring[MaxPathLen];
    int k_errno;
    
    set_progname (argv[0]);

    memset(&pr, 0, sizeof(pr));
    if (krb_get_default_principal(pr.name, pr.instance, default_realm) < 0)
	errx (1, "I could not even guess who you might be");
    while ((c = getopt(argc, argv, "p:u:r:mt")) != EOF) 
	switch (c) {
	case 'p':
	case 'u':
	    if((k_errno = krb_parse_name(optarg, &pr)) != KSUCCESS)
		errx (1, "%s", krb_get_err_text(k_errno));
	    break;
	case 'r':
	    memset(default_realm, 0, sizeof(default_realm));
	    strncpy(default_realm, optarg, sizeof(default_realm) - 1);
	    break;
	case 'm':
	    multiple++;
	    break;
	case 't':
	    tflag++;
	    break;
	default:
	    usage();
	    break;
	}
    if (optind < argc)
	usage();
    strcpy(krbrlm, default_realm);

    if (kadm_init_link(PWSERV_NAME, KRB_MASTER, krbrlm) != KADM_SUCCESS)
	*krbrlm = '\0';
    if (pr.realm[0] == '\0')
	strcpy (pr.realm, krbrlm);
    if (pr.instance[0] == '\0')
	strcpy(pr.instance, "admin");
    
    if (!tflag) {
	snprintf(tktstring, sizeof(tktstring), TKT_ROOT "_adm_%d",(int)getpid());
	krb_set_tkt_string(tktstring);
    }
    
}

int
main(int argc, char **argv)
{
    do_init(argc, argv);

    printf("Welcome to the Kerberos Administration Program, version 2\n");
    printf("Type \"help\" if you need it.\n");
    sl_loop (cmds, "kadmin: ");
    printf("\n");
    quit();
    exit(0);
}

static int
setvals(Kadm_vals *vals, char *string)
{
    char realm[REALM_SZ];
    int status = KADM_SUCCESS;

    memset(vals, 0, sizeof(*vals));
    memset(realm, 0, sizeof(realm));

    SET_FIELD(KADM_NAME,vals->fields);
    SET_FIELD(KADM_INST,vals->fields);
    if ((status = kname_parse(vals->name, vals->instance, realm, string))) {
	printf("kerberos error: %s\n", krb_get_err_text(status));
	return status;
    }
    if (!realm[0])
	strcpy(realm, default_realm);
    if (strcmp(realm, krbrlm)) {
	strcpy(krbrlm, realm);
	if ((status = kadm_init_link(PWSERV_NAME, KRB_MASTER, krbrlm)) 
	    != KADM_SUCCESS)
	    printf("kadm error for realm %s: %s\n", 
		   krbrlm, error_message(status));
    }
    if (status) 
	return 1;
    else
	return KADM_SUCCESS;
}    

static void 
change_password(int argc, char **argv)
{
    Kadm_vals old, new;
    int status;
    char pw_prompt[BUFSIZ];

    if (argc != 2) {
	printf("Usage: change_password loginname\n");
	return;
    }

    if (setvals(&old, argv[1]) != KADM_SUCCESS)
	return;

    new = old;

    SET_FIELD(KADM_DESKEY,new.fields);

    if (princ_exists(old.name, old.instance, krbrlm) != PE_NO) {
	/* get the admin's password */
        if (get_admin_password() != GOOD_PW)
	    return;

	/* get the new password */
	snprintf(pw_prompt, sizeof(pw_prompt), "New password for %s:", argv[1]);
	
	if (get_password(&new.key_low, &new.key_high,
			 pw_prompt, SWAP) == GOOD_PW) {
	    status = kadm_mod(&old, &new);
	    if (status == KADM_SUCCESS) {
		printf("Password changed for %s.\n", argv[1]);
	    } else {
		printf("kadmin: %s\nwhile changing password for %s",
		       error_message(status), argv[1]);
	    }
	} else
	    printf("Error reading password; password unchanged\n");
	memset(&new, 0, sizeof(new));
	if (!multiple)
	    clean_up();
    }
    else 
	printf("kadmin: Principal %s does not exist.\n",
	       krb_unparse_name_long (old.name, old.instance, krbrlm));
    return;
}

static int
getkey(unsigned char *k)
{
    int i, c;
    for (i = 0; i < 8; i++)
	{
	    c = getchar();
	    if (c == EOF)
		return 0;
	    else if (c == '\\')
		{
		    int oct = -1;
		    scanf("%03o", &oct);
		    if (oct < 0 || oct > 255)
			return 0;
		    k[i] = oct;
		}
	    else if (!isalpha(c))
		return 0;
	    else
		k[i] = c;
	}
    c = getchar();
    if (c != '\n')
	return 0;
    return 1;			/* Success */
}

static void
printkey(unsigned char *tkey)
{
    int j;
    for(j = 0; j < 8; j++)
	if(tkey[j] != '\\' && isalpha(tkey[j]) != 0)
	    printf("%c", tkey[j]);
	else
	    printf("\\%03o",(unsigned char)tkey[j]);
    printf("\n");
}

static void 
change_key(int argc, char **argv)
{
    Kadm_vals old, new;
    unsigned char newkey[8];
    int status;

    if (argc != 2) {
	printf("Usage: change_key principal-name\n");
	return;
    }

    if (setvals(&old, argv[1]) != KADM_SUCCESS)
	return;

    new = old;

    SET_FIELD(KADM_DESKEY,new.fields);

    if (princ_exists(old.name, old.instance, krbrlm) != PE_NO) {
	/* get the admin's password */
        if (get_admin_password() != GOOD_PW)
	    return;

	/* get the new password */
	printf("New DES key for %s: ", argv[1]);
	
	if (getkey(newkey)) {
	    memcpy(&new.key_low, newkey, 4);
	    memcpy(&new.key_high, ((char *)newkey) + 4, 4);
	    printf("Entered key for %s: ", argv[1]);
	    printkey(newkey);
	    memset(newkey, 0, sizeof(newkey));

	    status = kadm_mod(&old, &new);
	    if (status == KADM_SUCCESS) {
		printf("Key changed for %s.\n", argv[1]);
	    } else {
		printf("kadmin: %s\nwhile changing key for %s",
		       error_message(status), argv[1]);
	    }
	} else
	    printf("Error reading key; key unchanged\n");
	memset(&new, 0, sizeof(new));
	if (!multiple)
	    clean_up();
    }
    else 
	printf("kadmin: Principal %s does not exist.\n",
	       krb_unparse_name_long (old.name, old.instance, krbrlm));
    return;
}

static void 
change_admin_password(int argc, char **argv)
{
    des_cblock newkey;
    int status;
    char pword[MAX_KPW_LEN];
    char *pw_msg;

    if (argc != 1) {
	printf("Usage: change_admin_password\n");
	return;
    }
    if (get_pw_new_pwd(pword, sizeof(pword), &pr, 1) == 0) {
	 des_string_to_key(pword, &newkey);
	 status = kadm_change_pw_plain(newkey, pword, &pw_msg);
	 if(status == KADM_INSECURE_PW)
	      printf("Insecure password: %s\n", pw_msg);
	 else if (status == KADM_SUCCESS)
	      printf("Admin password changed\n");
	 else
	      printf("kadm error: %s\n",error_message(status));
	 memset(newkey, 0, sizeof(newkey));
	 memset(pword, 0, sizeof(pword));
    }
    if (!multiple)
	clean_up();
    return;
}

static void 
add_new_key(int argc, char **argv)
{
    Kadm_vals new;
    char pw_prompt[BUFSIZ];
    int status;

    if (argc != 2) {
	printf("Usage: add_new_key user_name.\n");
	return;
    }
    if (setvals(&new, argv[1]) != KADM_SUCCESS)
	return;

    SET_FIELD(KADM_EXPDATE,new.fields);
    SET_FIELD(KADM_ATTR,new.fields);
    SET_FIELD(KADM_MAXLIFE,new.fields);
    SET_FIELD(KADM_DESKEY,new.fields);

    if (princ_exists(new.name, new.instance, krbrlm) != PE_YES) {
	Kadm_vals vals;
	u_char fields[4];
	char n[ANAME_SZ + INST_SZ + 1];

	/* get the admin's password */
	if (get_admin_password() != GOOD_PW)
	    return;
	
	memset(fields, 0, sizeof(fields));
	SET_FIELD(KADM_NAME,fields);
	SET_FIELD(KADM_INST,fields);
	SET_FIELD(KADM_EXPDATE,fields);
	SET_FIELD(KADM_ATTR,fields);
	SET_FIELD(KADM_MAXLIFE,fields);
	snprintf (n, sizeof(n), "default.%s", new.instance);
	if (setvals(&vals, n) != KADM_SUCCESS)
	    return;

	if (kadm_get(&vals, fields) != KADM_SUCCESS) {
	    if (setvals(&vals, "default") != KADM_SUCCESS)
		return;
	    if ((status = kadm_get(&vals, fields)) != KADM_SUCCESS) {
		printf ("kadm error: %s\n", error_message(status));
		return;
	    }
	}

	if (vals.max_life == 255) /* Defaults not set! */ {
	      /* This is the default maximum lifetime for new principals. */
	      if (strcmp(new.instance, "admin") == 0)
		vals.max_life = 1 + (CLOCK_SKEW/(5*60)); /* 5+5 minutes */
	      else if (strcmp(new.instance, "root") == 0)
		vals.max_life = 96;    /* 8 hours */
	      else if (krb_life_to_time(0, 162) >= 24*60*60)
		vals.max_life = 162;     /* ca 100 hours */
	      else
		vals.max_life = 255;     /* ca 21 hours (maximum) */

	      /* Also fix expiration date. */
	      if (strcmp(new.name, "rcmd") == 0)
		vals.exp_date = 1104814999; /* Tue Jan 4 06:03:19 2005 */
	      else
		vals.exp_date = time(0) + 2*(365*24*60*60); /* + ca 2 years */
	}

	new.max_life = vals.max_life;
	new.exp_date = vals.exp_date;
	new.attributes = vals.attributes;
	get_maxlife(&new);
	get_attr(&new);
	get_expdate(&new);

	/* get the new password */
	snprintf(pw_prompt, sizeof(pw_prompt), "Password for %s:", argv[1]);
	
	if (get_password(&new.key_low, &new.key_high,
			 pw_prompt, SWAP) == GOOD_PW) {
	    status = kadm_add(&new);
	    if (status == KADM_SUCCESS) {
		printf("%s added to database.\n", argv[1]);
	    } else {
		printf("kadm error: %s\n",error_message(status));
	    }
	} else
	    printf("Error reading password; %s not added\n",argv[1]);
	memset(&new, 0, sizeof(new));
	if (!multiple)
	    clean_up();
    }
    else
	printf("kadmin: Principal already exists.\n");
    return;
}

static void 
del_entry(int argc, char **argv)
{
    int status;
    Kadm_vals vals;

    if (argc != 2) {
	printf("Usage: del_entry username\n");
	return;
    }

    if (setvals(&vals, argv[1]) != KADM_SUCCESS)
	return;

    if (princ_exists(vals.name, vals.instance, krbrlm) != PE_NO) {
	/* get the admin's password */
	if (get_admin_password() != GOOD_PW)
	    return;
	
	if ((status = kadm_del(&vals)) == KADM_SUCCESS){
	    printf("%s removed from database.\n", argv[1]);
	} else {
	    printf("kadm error: %s\n",error_message(status));
	}
	
	if (!multiple)
	    clean_up();
    }
    else
	printf("kadmin: Principal %s does not exist.\n",
	       krb_unparse_name_long (vals.name, vals.instance, krbrlm));
    return;
}

static void 
get_entry(int argc, char **argv)
{
    int status;
    u_char fields[4];
    Kadm_vals vals;

    if (argc != 2) {
	printf("Usage: get_entry username\n");
	return;
    }

    memset(fields, 0, sizeof(fields));

    SET_FIELD(KADM_NAME,fields);
    SET_FIELD(KADM_INST,fields);
    SET_FIELD(KADM_EXPDATE,fields);
    SET_FIELD(KADM_ATTR,fields);
    SET_FIELD(KADM_MAXLIFE,fields);
#if 0
    SET_FIELD(KADM_DESKEY,fields); 
#endif

    if (setvals(&vals, argv[1]) != KADM_SUCCESS)
	return;


    if (princ_exists(vals.name, vals.instance, krbrlm) != PE_NO) {
	/* get the admin's password */
	if (get_admin_password() != GOOD_PW)
	    return;
	
	if ((status = kadm_get(&vals, fields)) == KADM_SUCCESS)
	    prin_vals(&vals);
	else
	    printf("kadm error: %s\n",error_message(status));
	
	if (!multiple)
	    clean_up();
    }
    else
	printf("kadmin: Principal %s does not exist.\n",
	       krb_unparse_name_long (vals.name, vals.instance, krbrlm));
    return;
}

static void 
mod_entry(int argc, char **argv)
{
    int status;
    u_char fields[4];
    Kadm_vals ovals, nvals;

    if (argc != 2) {
	printf("Usage: mod_entry username\n");
	return;
    }

    memset(fields, 0, sizeof(fields));

    SET_FIELD(KADM_NAME,fields);
    SET_FIELD(KADM_INST,fields);
    SET_FIELD(KADM_EXPDATE,fields);
    SET_FIELD(KADM_ATTR,fields);
    SET_FIELD(KADM_MAXLIFE,fields);

    if (setvals(&ovals, argv[1]) != KADM_SUCCESS)
	return;

    nvals = ovals;

    if (princ_exists(ovals.name, ovals.instance, krbrlm) == PE_NO) {
	printf("kadmin: Principal %s does not exist.\n",
	       krb_unparse_name_long (ovals.name, ovals.instance, krbrlm));
	return;
    }

    /* get the admin's password */
    if (get_admin_password() != GOOD_PW)
	return;
	
    if ((status = kadm_get(&ovals, fields)) != KADM_SUCCESS) {
	printf("[ unable to retrieve current settings: %s ]\n",
	    error_message(status));
	nvals.max_life = DEFAULT_TKT_LIFE;
	nvals.exp_date = 0;
	nvals.attributes = 0;
    } else {
	nvals.max_life = ovals.max_life;
	nvals.exp_date = ovals.exp_date;
	nvals.attributes = ovals.attributes;
    }

    get_maxlife(&nvals);
    get_attr(&nvals);
    get_expdate(&nvals);
    
    if (IS_FIELD(KADM_MAXLIFE, nvals.fields) ||
	IS_FIELD(KADM_ATTR, nvals.fields) ||
	IS_FIELD(KADM_EXPDATE, nvals.fields)) {
	if ((status = kadm_mod(&ovals, &nvals)) != KADM_SUCCESS) {
	    printf("kadm error: %s\n",error_message(status));
	    goto out;
	}
	if ((status = kadm_get(&ovals, fields)) != KADM_SUCCESS) {
	    printf("kadm error: %s\n",error_message(status));
	    goto out;
	}
    }
    prin_vals(&ovals);

out:
    if (!multiple)
	clean_up();
    return;
}

static void
help(int argc, char **argv)
{
    sl_help (cmds, argc, argv);
}
OpenPOWER on IntegriCloud