1 /* $NetBSD: kswitch.c,v 1.2 2017/01/28 21:31:45 christos 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 "heimtools-commands.h" 38 39 #ifdef HAVE_READLINE 40 char *readline(const char *prompt); 41 #else 42 43 static char * 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 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(heimtools_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(heimtools_context, NULL, &cursor); 87 if (ret) 88 krb5_err(heimtools_context, 1, ret, "krb5_cc_cache_get_first"); 89 90 while (krb5_cc_cache_next(heimtools_context, cursor, &id) == 0) { 91 krb5_principal p; 92 char num[10]; 93 94 ret = krb5_cc_get_principal(heimtools_context, id, &p); 95 if (ret) { 96 krb5_cc_close(heimtools_context, id); 97 continue; 98 } 99 100 ret = krb5_unparse_name(heimtools_context, p, &name); 101 krb5_free_principal(heimtools_context, p); 102 103 snprintf(num, sizeof(num), "%d", (int)(len + 1)); 104 rtbl_add_column_entry_by_id(ct, 0, num); 105 rtbl_add_column_entry_by_id(ct, 1, name); 106 rtbl_add_column_entry_by_id(ct, 2, krb5_cc_get_type(heimtools_context, id)); 107 free(name); 108 109 ids = erealloc(ids, (len + 1) * sizeof(ids[0])); 110 ids[len] = id; 111 len++; 112 } 113 krb5_cc_cache_end_seq_get(heimtools_context, cursor); 114 115 rtbl_format(ct, stdout); 116 rtbl_destroy(ct); 117 118 name = readline("Select number: "); 119 if (name) { 120 i = atoi(name); 121 if (i == 0) 122 krb5_errx(heimtools_context, 1, "Cache number '%s' is invalid", name); 123 if (i > len) 124 krb5_errx(heimtools_context, 1, "Cache number '%s' is too large", name); 125 126 id = ids[i - 1]; 127 ids[i - 1] = NULL; 128 free(name); 129 } else 130 krb5_errx(heimtools_context, 1, "No cache selected"); 131 for (i = 0; i < len; i++) 132 if (ids[i]) 133 krb5_cc_close(heimtools_context, ids[i]); 134 free(ids); 135 } else if (opt->principal_string) { 136 krb5_principal p; 137 138 ret = krb5_parse_name(heimtools_context, opt->principal_string, &p); 139 if (ret) 140 krb5_err(heimtools_context, 1, ret, "krb5_parse_name: %s", 141 opt->principal_string); 142 143 ret = krb5_cc_cache_match(heimtools_context, p, &id); 144 if (ret) 145 krb5_err(heimtools_context, 1, ret, 146 N_("Did not find principal: %s", ""), 147 opt->principal_string); 148 149 krb5_free_principal(heimtools_context, p); 150 151 } else if (opt->cache_string) { 152 const krb5_cc_ops *ops; 153 char *str; 154 int aret; 155 156 ops = krb5_cc_get_prefix_ops(heimtools_context, opt->type_string); 157 if (ops == NULL) 158 krb5_err(heimtools_context, 1, 0, "krb5_cc_get_prefix_ops"); 159 160 aret = asprintf(&str, "%s:%s", ops->prefix, opt->cache_string); 161 if (aret == -1) 162 krb5_errx(heimtools_context, 1, N_("out of memory", "")); 163 164 ret = krb5_cc_resolve(heimtools_context, str, &id); 165 if (ret) 166 krb5_err(heimtools_context, 1, ret, "krb5_cc_resolve: %s", str); 167 168 free(str); 169 } else { 170 krb5_errx(heimtools_context, 1, "missing option for kswitch"); 171 } 172 173 ret = krb5_cc_switch(heimtools_context, id); 174 if (ret) 175 krb5_err(heimtools_context, 1, ret, "krb5_cc_switch"); 176 177 krb5_cc_close(heimtools_context, id); 178 179 return 0; 180 } 181