1121407Speter/*
2121407Speter * Copyright (c) 2008 - 2010 Kungliga Tekniska H��gskolan
3121407Speter * (Royal Institute of Technology, Stockholm, Sweden).
4121407Speter * All rights reserved.
5121407Speter *
6121407Speter * Redistribution and use in source and binary forms, with or without
7121407Speter * modification, are permitted provided that the following conditions
8121407Speter * are met:
9121407Speter *
10121407Speter * 1. Redistributions of source code must retain the above copyright
11121407Speter *    notice, this list of conditions and the following disclaimer.
12121407Speter *
13121407Speter * 2. Redistributions in binary form must reproduce the above copyright
14121407Speter *    notice, this list of conditions and the following disclaimer in the
15121407Speter *    documentation and/or other materials provided with the distribution.
16121407Speter *
17121407Speter * 3. Neither the name of the Institute nor the names of its contributors
18121407Speter *    may be used to endorse or promote products derived from this software
19121407Speter *    without specific prior written permission.
20121407Speter *
21121407Speter * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22121407Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23121407Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24121407Speter * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25121407Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26121407Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27121407Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28121407Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29121407Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30121407Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31121407Speter * SUCH DAMAGE.
32121407Speter */
33121407Speter
34121407Speter#include "kuser_locl.h"
35121407Speter#include "kcc-commands.h"
36124296Snectar
37121407Speter#ifdef HAVE_READLINE
38char *readline(const char *prompt);
39#else
40
41static char *
42readline(const char *prompt)
43{
44    char buf[BUFSIZ];
45    printf ("%s", prompt);
46    fflush (stdout);
47    if(fgets(buf, sizeof(buf), stdin) == NULL)
48	return NULL;
49    buf[strcspn(buf, "\r\n")] = '\0';
50    return strdup(buf);
51}
52
53#endif
54
55/*
56 *
57 */
58
59int
60kswitch(struct kswitch_options *opt, int argc, char **argv)
61{
62    krb5_error_code ret;
63    krb5_ccache id = NULL;
64
65    if (opt->cache_string && opt->principal_string)
66	krb5_errx(kcc_context, 1,
67		  N_("Both --cache and --principal given, choose one", ""));
68
69    if (opt->interactive_flag) {
70	krb5_cc_cache_cursor cursor;
71	krb5_ccache *ids = NULL;
72	size_t i, len = 0;
73	char *name;
74	rtbl_t ct;
75
76	ct = rtbl_create();
77
78	rtbl_add_column_by_id(ct, 0, "#", 0);
79	rtbl_add_column_by_id(ct, 1, "Principal", 0);
80	rtbl_set_column_affix_by_id(ct, 1, "    ", "");
81        rtbl_add_column_by_id(ct, 2, "Type", 0);
82        rtbl_set_column_affix_by_id(ct, 2, "  ", "");
83
84	ret = krb5_cc_cache_get_first(kcc_context, NULL, &cursor);
85	if (ret)
86	    krb5_err(kcc_context, 1, ret, "krb5_cc_cache_get_first");
87
88	while (krb5_cc_cache_next(kcc_context, cursor, &id) == 0) {
89	    krb5_principal p = NULL;
90	    char num[10];
91
92	    ret = krb5_cc_get_principal(kcc_context, id, &p);
93	    if (ret == 0)
94		ret = krb5_unparse_name(kcc_context, p, &name);
95	    if (ret)
96		continue;
97
98	    krb5_free_principal(kcc_context, p);
99
100	    snprintf(num, sizeof(num), "%d", (int)(len + 1));
101	    rtbl_add_column_entry_by_id(ct, 0, num);
102	    rtbl_add_column_entry_by_id(ct, 1, name);
103            rtbl_add_column_entry_by_id(ct, 2, krb5_cc_get_type(kcc_context, id));
104	    free(name);
105
106	    ids = erealloc(ids, (len + 1) * sizeof(ids[0]));
107	    ids[len] = id;
108	    len++;
109	}
110	krb5_cc_cache_end_seq_get(kcc_context, cursor);
111
112	rtbl_format(ct, stdout);
113	rtbl_destroy(ct);
114
115	name = readline("Select number: ");
116	if (name) {
117	    i = atoi(name);
118	    if (i == 0)
119		krb5_errx(kcc_context, 1, "Cache number '%s' is invalid", name);
120	    if (i > len)
121		krb5_errx(kcc_context, 1, "Cache number '%s' is too large", name);
122
123	    id = ids[i - 1];
124	    ids[i - 1] = NULL;
125	} else
126	    krb5_errx(kcc_context, 1, "No cache selected");
127	for (i = 0; i < len; i++)
128	    if (ids[i])
129		krb5_cc_close(kcc_context, ids[i]);
130
131    } else if (opt->principal_string) {
132	krb5_principal p;
133
134	ret = krb5_parse_name(kcc_context, opt->principal_string, &p);
135	if (ret)
136	    krb5_err(kcc_context, 1, ret, "krb5_parse_name: %s",
137		     opt->principal_string);
138
139	ret = krb5_cc_cache_match(kcc_context, p, &id);
140	if (ret)
141	    krb5_err(kcc_context, 1, ret,
142		     N_("Did not find principal: %s", ""),
143		     opt->principal_string);
144
145	krb5_free_principal(kcc_context, p);
146
147    } else if (opt->cache_string) {
148	const krb5_cc_ops *ops;
149	char *str;
150
151	ops = krb5_cc_get_prefix_ops(kcc_context, opt->type_string);
152	if (ops == NULL)
153	    krb5_err(kcc_context, 1, 0, "krb5_cc_get_prefix_ops");
154
155	asprintf(&str, "%s:%s", ops->prefix, opt->cache_string);
156	if (str == NULL)
157	    krb5_errx(kcc_context, 1, N_("out of memory", ""));
158
159	ret = krb5_cc_resolve(kcc_context, str, &id);
160	if (ret)
161	    krb5_err(kcc_context, 1, ret, "krb5_cc_resolve: %s", str);
162
163	free(str);
164    } else {
165	krb5_errx(kcc_context, 1, "missing option for kswitch");
166    }
167
168    ret = krb5_cc_switch(kcc_context, id);
169    if (ret)
170	krb5_err(kcc_context, 1, ret, "krb5_cc_switch");
171
172    return 0;
173}
174