crypto/external/bsd/heimdal/dist/kuser/kswitch.c

   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 *
  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(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 }