1 /*
2 * Copyright (c) 2008 - 2010 Kungliga Tekniska Högskolan
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 "kuser_locl.h"
35 #include "kcc-commands.h"
36
37 #ifdef HAVE_READLINE
38 char *readline(const char *prompt);
39 #else
40
41 static char *
readline(const char * prompt)42 readline(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
59 int
kswitch(struct kswitch_options * opt,int argc,char ** argv)60 kswitch(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