1 /* $NetBSD: kswitch.c,v 1.1.1.2 2014/04/24 12:45:28 pettai Exp $ */
2
3 /*
4 * Copyright (c) 2008 - 2010 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * 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 #include "kcc-commands.h"
38
39 #ifdef HAVE_READLINE
40 char *readline(const char *prompt);
41 #else
42
43 static char *
readline(const char * prompt)44 readline(const char *prompt)
45 {
46 char buf[BUFSIZ];
47 printf ("%s", prompt);
48 fflush (stdout);
49 if(fgets(buf, sizeof(buf), stdin) == NULL)
50 return NULL;
51 buf[strcspn(buf, "\r\n")] = '\0';
52 return strdup(buf);
53 }
54
55 #endif
56
57 /*
58 *
59 */
60
61 int
kswitch(struct kswitch_options * opt,int argc,char ** argv)62 kswitch(struct kswitch_options *opt, int argc, char **argv)
63 {
64 krb5_error_code ret;
65 krb5_ccache id = NULL;
66
67 if (opt->cache_string && opt->principal_string)
68 krb5_errx(kcc_context, 1,
69 N_("Both --cache and --principal given, choose one", ""));
70
71 if (opt->interactive_flag) {
72 krb5_cc_cache_cursor cursor;
73 krb5_ccache *ids = NULL;
74 size_t i, len = 0;
75 char *name;
76 rtbl_t ct;
77
78 ct = rtbl_create();
79
80 rtbl_add_column_by_id(ct, 0, "#", 0);
81 rtbl_add_column_by_id(ct, 1, "Principal", 0);
82 rtbl_set_column_affix_by_id(ct, 1, " ", "");
83 rtbl_add_column_by_id(ct, 2, "Type", 0);
84 rtbl_set_column_affix_by_id(ct, 2, " ", "");
85
86 ret = krb5_cc_cache_get_first(kcc_context, NULL, &cursor);
87 if (ret)
88 krb5_err(kcc_context, 1, ret, "krb5_cc_cache_get_first");
89
90 while (krb5_cc_cache_next(kcc_context, cursor, &id) == 0) {
91 krb5_principal p;
92 char num[10];
93
94 ret = krb5_cc_get_principal(kcc_context, id, &p);
95 if (ret)
96 continue;
97
98 ret = krb5_unparse_name(kcc_context, p, &name);
99 krb5_free_principal(kcc_context, p);
100
101 snprintf(num, sizeof(num), "%d", (int)(len + 1));
102 rtbl_add_column_entry_by_id(ct, 0, num);
103 rtbl_add_column_entry_by_id(ct, 1, name);
104 rtbl_add_column_entry_by_id(ct, 2, krb5_cc_get_type(kcc_context, id));
105 free(name);
106
107 ids = erealloc(ids, (len + 1) * sizeof(ids[0]));
108 ids[len] = id;
109 len++;
110 }
111 krb5_cc_cache_end_seq_get(kcc_context, cursor);
112
113 rtbl_format(ct, stdout);
114 rtbl_destroy(ct);
115
116 name = readline("Select number: ");
117 if (name) {
118 i = atoi(name);
119 if (i == 0)
120 krb5_errx(kcc_context, 1, "Cache number '%s' is invalid", name);
121 if (i > len)
122 krb5_errx(kcc_context, 1, "Cache number '%s' is too large", name);
123
124 id = ids[i - 1];
125 ids[i - 1] = NULL;
126 } else
127 krb5_errx(kcc_context, 1, "No cache selected");
128 for (i = 0; i < len; i++)
129 if (ids[i])
130 krb5_cc_close(kcc_context, ids[i]);
131
132 } else if (opt->principal_string) {
133 krb5_principal p;
134
135 ret = krb5_parse_name(kcc_context, opt->principal_string, &p);
136 if (ret)
137 krb5_err(kcc_context, 1, ret, "krb5_parse_name: %s",
138 opt->principal_string);
139
140 ret = krb5_cc_cache_match(kcc_context, p, &id);
141 if (ret)
142 krb5_err(kcc_context, 1, ret,
143 N_("Did not find principal: %s", ""),
144 opt->principal_string);
145
146 krb5_free_principal(kcc_context, p);
147
148 } else if (opt->cache_string) {
149 const krb5_cc_ops *ops;
150 char *str;
151
152 ops = krb5_cc_get_prefix_ops(kcc_context, opt->type_string);
153 if (ops == NULL)
154 krb5_err(kcc_context, 1, 0, "krb5_cc_get_prefix_ops");
155
156 asprintf(&str, "%s:%s", ops->prefix, opt->cache_string);
157 if (str == NULL)
158 krb5_errx(kcc_context, 1, N_("out of memory", ""));
159
160 ret = krb5_cc_resolve(kcc_context, str, &id);
161 if (ret)
162 krb5_err(kcc_context, 1, ret, "krb5_cc_resolve: %s", str);
163
164 free(str);
165 } else {
166 krb5_errx(kcc_context, 1, "missing option for kswitch");
167 }
168
169 ret = krb5_cc_switch(kcc_context, id);
170 if (ret)
171 krb5_err(kcc_context, 1, ret, "krb5_cc_switch");
172
173 return 0;
174 }
175