1 /* $NetBSD: kswitch.c,v 1.1.1.1 2011/04/13 18:14:39 elric 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(char *prompt); 41 #else 42 43 static char * 44 readline(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 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(ct, "", 0); 81 rtbl_add_column(ct, "Principal", 0); 82 rtbl_set_column_prefix(ct, "Principal", " "); 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; 90 char num[10]; 91 92 ret = krb5_cc_get_principal(kcc_context, id, &p); 93 if (ret) 94 continue; 95 96 ret = krb5_unparse_name(kcc_context, p, &name); 97 krb5_free_principal(kcc_context, p); 98 99 snprintf(num, sizeof(num), "%d", (int)(len + 1)); 100 rtbl_add_column_entry(ct, "", num); 101 rtbl_add_column_entry(ct, "Principal", name); 102 free(name); 103 104 ids = erealloc(ids, (len + 1) * sizeof(ids[0])); 105 ids[len] = id; 106 len++; 107 } 108 krb5_cc_cache_end_seq_get(kcc_context, cursor); 109 110 rtbl_format(ct, stdout); 111 rtbl_destroy(ct); 112 113 name = readline("Select number: "); 114 if (name) { 115 i = atoi(name); 116 if (i == 0) 117 krb5_errx(kcc_context, 1, "Cache number '%s' is invalid", name); 118 if (i > len) 119 krb5_errx(kcc_context, 1, "Cache number '%s' is too large", name); 120 121 id = ids[i - 1]; 122 ids[i - 1] = NULL; 123 } else 124 krb5_errx(kcc_context, 1, "No cache selected"); 125 for (i = 0; i < len; i++) 126 if (ids[i]) 127 krb5_cc_close(kcc_context, ids[i]); 128 129 } else if (opt->principal_string) { 130 krb5_principal p; 131 132 ret = krb5_parse_name(kcc_context, opt->principal_string, &p); 133 if (ret) 134 krb5_err(kcc_context, 1, ret, "krb5_parse_name: %s", 135 opt->principal_string); 136 137 ret = krb5_cc_cache_match(kcc_context, p, &id); 138 if (ret) 139 krb5_err(kcc_context, 1, ret, 140 N_("Did not find principal: %s", ""), 141 opt->principal_string); 142 143 krb5_free_principal(kcc_context, p); 144 145 } else if (opt->cache_string) { 146 const krb5_cc_ops *ops; 147 char *str; 148 149 ops = krb5_cc_get_prefix_ops(kcc_context, opt->type_string); 150 if (ops == NULL) 151 krb5_err(kcc_context, 1, 0, "krb5_cc_get_prefix_ops"); 152 153 asprintf(&str, "%s:%s", ops->prefix, opt->cache_string); 154 if (str == NULL) 155 krb5_errx(kcc_context, 1, N_("out of memory", "")); 156 157 ret = krb5_cc_resolve(kcc_context, str, &id); 158 if (ret) 159 krb5_err(kcc_context, 1, ret, "krb5_cc_resolve: %s", str); 160 161 free(str); 162 } else { 163 krb5_errx(kcc_context, 1, "missing option for kswitch"); 164 } 165 166 ret = krb5_cc_switch(kcc_context, id); 167 if (ret) 168 krb5_err(kcc_context, 1, ret, "krb5_cc_switch"); 169 170 return 0; 171 } 172