lib/krb5/test_alname.c

   1 /*
   2  * Copyright (c) 2003 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 KTH nor the names of its contributors may be
  18  *    used to endorse or promote products derived from this software without
  19  *    specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  22  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  28  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
  32
  33 #include "krb5_locl.h"
  34 #include <getarg.h>
  35 #include <err.h>
  36
  37 char localname[1024];
  38 static size_t lname_size = sizeof (localname);
  39 static int lname_size_arg = 0;
  40 static int simple_flag = 0;
  41 static int verbose_flag = 0;
  42 static int version_flag = 0;
  43 static int help_flag    = 0;
  44
  45 static struct getargs args[] = {
  46     {"lname-size",      0,      arg_integer,    &lname_size_arg,
  47      "set localname size (0 means use default, must be 0..1023)", "integer" },
  48     {"simple",  0,      arg_flag,       &simple_flag, /* Used for scripting */
  49      "map the given principal and print the resulting localname", NULL },
  50     {"verbose", 0,      arg_flag,       &verbose_flag,
  51      "print the actual principal name as well as the localname", NULL },
  52     {"version", 0,      arg_flag,       &version_flag,
  53      "print version", NULL },
  54     {"help",    0,      arg_flag,       &help_flag,
  55      NULL, NULL }
  56 };
  57
  58 static void
  59 test_alname(krb5_context context, krb5_const_realm realm,
  60             const char *user, const char *inst,
  61             const char *localuser, int ok)
  62 {
  63     krb5_principal p;
  64     krb5_error_code ret;
  65     char *princ;
  66
  67     ret = krb5_make_principal(context, &p, realm, user, inst, NULL);
  68     if (ret)
  69         krb5_err(context, 1, ret, "krb5_build_principal");
  70
  71     ret = krb5_unparse_name(context, p, &princ);
  72     if (ret)
  73         krb5_err(context, 1, ret, "krb5_unparse_name");
  74
  75     ret = krb5_aname_to_localname(context, p, lname_size, localname);
  76     krb5_free_principal(context, p);
  77     if (ret) {
  78         if (!ok) {
  79             free(princ);
  80             return;
  81         }
  82         krb5_err(context, 1, ret, "krb5_aname_to_localname: %s -> %s",
  83                  princ, localuser);
  84         free(princ);
  85     }
  86
  87     if (strcmp(localname, localuser) != 0) {
  88         if (ok)
  89             errx(1, "compared failed %s != %s (should have succeded)",
  90                  localname, localuser);
  91     } else {
  92         if (!ok)
  93             errx(1, "compared failed %s == %s (should have failed)",
  94                  localname, localuser);
  95     }
  96
  97 }
  98
  99 static void
 100 usage (int ret)
 101 {
 102     arg_printusage (args,
 103                     sizeof(args)/sizeof(*args),
 104                     NULL,
 105                     "");
 106     exit (ret);
 107 }
 108
 109 int
 110 main(int argc, char **argv)
 111 {
 112     krb5_context context;
 113     krb5_error_code ret;
 114     krb5_realm realm;
 115     int optidx = 0;
 116     char *user;
 117
 118     setprogname(argv[0]);
 119
 120     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 121         usage(1);
 122
 123     if (help_flag)
 124         usage (0);
 125
 126     if(version_flag){
 127         print_version(NULL);
 128         exit(0);
 129     }
 130
 131     argc -= optidx;
 132     argv += optidx;
 133
 134     ret = krb5_init_context(&context);
 135     if (ret)
 136         errx (1, "krb5_init_context failed: %d", ret);
 137
 138     if (simple_flag) {
 139         krb5_principal princ;
 140         char *unparsed;
 141         int status = 0;
 142
 143         /* Map then print the result and exit */
 144         if (argc != 1)
 145             errx(1, "One argument is required and it must be a principal name");
 146
 147         ret = krb5_parse_name(context, argv[0], &princ);
 148         if (ret)
 149             krb5_err(context, 1, ret, "krb5_build_principal");
 150
 151         ret = krb5_unparse_name(context, princ, &unparsed);
 152         if (ret)
 153             krb5_err(context, 1, ret, "krb5_unparse_name");
 154
 155         if (lname_size_arg > 0 && lname_size_arg < 1024)
 156             lname_size = lname_size_arg;
 157         else if (lname_size_arg != 0)
 158             errx(1, "local name size must be between 0 and 1023 (inclusive)");
 159
 160         ret = krb5_aname_to_localname(context, princ, lname_size, localname);
 161         if (ret == KRB5_NO_LOCALNAME) {
 162             if (verbose_flag)
 163                 fprintf(stderr, "No mapping obtained for %s\n", unparsed);
 164             exit(1);
 165         }
 166         switch (ret) {
 167         case KRB5_PLUGIN_NO_HANDLE:
 168             fprintf(stderr, "Error: KRB5_PLUGIN_NO_HANDLE leaked!\n");
 169             status = 2;
 170             break;
 171         case KRB5_CONFIG_NOTENUFSPACE:
 172             fprintf(stderr, "Error: lname-size (%lu) too small\n",
 173                     (long unsigned)lname_size);
 174             status = 3;
 175             break;
 176         case 0:
 177             if (verbose_flag)
 178                 printf("%s ", unparsed);
 179             printf("%s\n", localname);
 180             break;
 181         default:
 182             krb5_err(context, 4, ret, "krb5_aname_to_localname");
 183             break;
 184         }
 185         free(unparsed);
 186         krb5_free_principal(context, princ);
 187         krb5_free_context(context);
 188         exit(status);
 189     }
 190
 191     if (argc != 1)
 192         errx(1, "first argument should be a local user that is in root .k5login");
 193
 194     user = argv[0];
 195
 196     ret = krb5_get_default_realm(context, &realm);
 197     if (ret)
 198         krb5_err(context, 1, ret, "krb5_get_default_realm");
 199
 200     test_alname(context, realm, user, NULL, user, 1);
 201     test_alname(context, realm, user, "root", "root", 1);
 202
 203     test_alname(context, "FOO.BAR.BAZ.KAKA", user, NULL, user, 0);
 204     test_alname(context, "FOO.BAR.BAZ.KAKA", user, "root", "root", 0);
 205
 206     test_alname(context, realm, user, NULL,
 207                 "not-same-as-user", 0);
 208     test_alname(context, realm, user, "root",
 209                 "not-same-as-user", 0);
 210
 211     test_alname(context, "FOO.BAR.BAZ.KAKA", user, NULL,
 212                 "not-same-as-user", 0);
 213     test_alname(context, "FOO.BAR.BAZ.KAKA", user, "root",
 214                 "not-same-as-user", 0);
 215
 216     krb5_free_context(context);
 217
 218     return 0;
 219 }