xref: /freebsd/crypto/heimdal/admin/remove.c (revision 5521ff5a4d1929056e7ffc982fac3341ca54df7c)
1 /*
2  * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
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.
16  *
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.
20  *
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
31  * SUCH DAMAGE.
32  */
33 
34 #include "ktutil_locl.h"
35 
36 RCSID("$Id: remove.c,v 1.2 2001/05/10 15:44:58 assar Exp $");
37 
38 int
39 kt_remove(int argc, char **argv)
40 {
41     krb5_error_code ret = 0;
42     krb5_keytab_entry entry;
43     krb5_keytab keytab;
44     char *principal_string = NULL;
45     krb5_principal principal = NULL;
46     int kvno = 0;
47     char *keytype_string = NULL;
48     krb5_enctype enctype = 0;
49     int help_flag = 0;
50     struct getargs args[] = {
51 	{ "principal", 'p', arg_string, NULL, "principal to remove" },
52 	{ "kvno", 'V', arg_integer, NULL, "key version to remove" },
53 	{ "enctype", 'e', arg_string, NULL, "enctype to remove" },
54 	{ "help", 'h', arg_flag, NULL }
55     };
56     int num_args = sizeof(args) / sizeof(args[0]);
57     int optind = 0;
58     int i = 0;
59     args[i++].value = &principal_string;
60     args[i++].value = &kvno;
61     args[i++].value = &keytype_string;
62     args[i++].value = &help_flag;
63     if(getarg(args, num_args, argc, argv, &optind)) {
64 	arg_printusage(args, num_args, "ktutil remove", "");
65 	return 1;
66     }
67     if(help_flag) {
68 	arg_printusage(args, num_args, "ktutil remove", "");
69 	return 0;
70     }
71     if(principal_string) {
72 	ret = krb5_parse_name(context, principal_string, &principal);
73 	if(ret) {
74 	    krb5_warn(context, ret, "%s", principal_string);
75 	    return 1;
76 	}
77     }
78     if(keytype_string) {
79 	ret = krb5_string_to_enctype(context, keytype_string, &enctype);
80 	if(ret) {
81 	    int t;
82 	    if(sscanf(keytype_string, "%d", &t) == 1)
83 		enctype = t;
84 	    else {
85 		krb5_warn(context, ret, "%s", keytype_string);
86 		if(principal)
87 		    krb5_free_principal(context, principal);
88 		return 1;
89 	    }
90 	}
91     }
92     if (!principal && !enctype && !kvno) {
93 	krb5_warnx(context,
94 		   "You must give at least one of "
95 		   "principal, enctype or kvno.");
96 	return 1;
97     }
98 
99     if (keytab_string == NULL) {
100 	ret = krb5_kt_default_modify_name (context, keytab_buf,
101 					   sizeof(keytab_buf));
102 	if (ret) {
103 	    krb5_warn(context, ret, "krb5_kt_default_modify_name");
104 	    return 1;
105 	}
106 	keytab_string = keytab_buf;
107     }
108     ret = krb5_kt_resolve(context, keytab_string, &keytab);
109     if (ret) {
110 	krb5_warn(context, ret, "resolving keytab %s", keytab_string);
111 	return 1;
112     }
113 
114     if (verbose_flag)
115 	fprintf (stderr, "Using keytab %s\n", keytab_string);
116 
117     entry.principal = principal;
118     entry.keyblock.keytype = enctype;
119     entry.vno = kvno;
120     ret = krb5_kt_remove_entry(context, keytab, &entry);
121     krb5_kt_close(context, keytab);
122     if(ret)
123 	krb5_warn(context, ret, "remove");
124     if(principal)
125 	krb5_free_principal(context, principal);
126     return 0;
127 }
128 
129