admin/ktutil.c

   1 /*
   2  * Copyright (c) 1997-2004 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 "ktutil_locl.h"
  35 #include <err.h>
  36
  37 RCSID("$Id$");
  38
  39 static int help_flag;
  40 static int version_flag;
  41 int verbose_flag;
  42 char *keytab_string;
  43 static char keytab_buf[256];
  44
  45 static struct getargs args[] = {
  46     {
  47         "version",
  48         0,
  49         arg_flag,
  50         &version_flag,
  51         NULL,
  52         NULL
  53     },
  54     {
  55         "help",
  56         'h',
  57         arg_flag,
  58         &help_flag,
  59         NULL,
  60         NULL
  61     },
  62     {
  63         "keytab",
  64         'k',
  65         arg_string,
  66         &keytab_string,
  67         "keytab",
  68         "keytab to operate on"
  69     },
  70     {
  71         "verbose",
  72         'v',
  73         arg_flag,
  74         &verbose_flag,
  75         "verbose",
  76         "run verbosely"
  77     }
  78 };
  79
  80 static int num_args = sizeof(args) / sizeof(args[0]);
  81
  82 krb5_context context;
  83
  84 krb5_keytab
  85 ktutil_open_keytab(void)
  86 {
  87     krb5_error_code ret;
  88     krb5_keytab keytab;
  89     if (keytab_string == NULL) {
  90         ret = krb5_kt_default_name (context, keytab_buf, sizeof(keytab_buf));
  91         if (ret) {
  92             krb5_warn(context, ret, "krb5_kt_default_name");
  93             return NULL;
  94         }
  95         keytab_string = keytab_buf;
  96     }
  97     ret = krb5_kt_resolve(context, keytab_string, &keytab);
  98     if (ret) {
  99         krb5_warn(context, ret, "resolving keytab %s", keytab_string);
 100         return NULL;
 101     }
 102     if (verbose_flag)
 103         fprintf (stderr, "Using keytab %s\n", keytab_string);
 104
 105     return keytab;
 106 }
 107
 108 int
 109 help(void *opt, int argc, char **argv)
 110 {
 111     if(argc == 0) {
 112         sl_help(commands, 1, argv - 1 /* XXX */);
 113     } else {
 114         SL_cmd *c = sl_match (commands, argv[0], 0);
 115         if(c == NULL) {
 116             fprintf (stderr, "No such command: %s. "
 117                      "Try \"help\" for a list of commands\n",
 118                      argv[0]);
 119         } else {
 120             if(c->func) {
 121                 char shelp[] = "--help";
 122                 char *fake[3];
 123                 fake[0] = argv[0];
 124                 fake[1] = shelp;
 125                 fake[2] = NULL;
 126                 (*c->func)(2, fake);
 127                 fprintf(stderr, "\n");
 128             }
 129             if(c->help && *c->help)
 130                 fprintf (stderr, "%s\n", c->help);
 131             if((++c)->name && c->func == NULL) {
 132                 int f = 0;
 133                 fprintf (stderr, "Synonyms:");
 134                 while (c->name && c->func == NULL) {
 135                     fprintf (stderr, "%s%s", f ? ", " : " ", (c++)->name);
 136                     f = 1;
 137                 }
 138                 fprintf (stderr, "\n");
 139             }
 140         }
 141     }
 142     return 0;
 143 }
 144
 145 static void
 146 usage(int status)
 147 {
 148     arg_printusage(args, num_args, NULL, "command");
 149     exit(status);
 150 }
 151
 152 int
 153 main(int argc, char **argv)
 154 {
 155     int optidx = 0;
 156     krb5_error_code ret;
 157     setprogname(argv[0]);
 158     ret = krb5_init_context(&context);
 159     if (ret)
 160         errx (1, "krb5_init_context failed: %d", ret);
 161     if(getarg(args, num_args, argc, argv, &optidx))
 162         usage(1);
 163     if(help_flag)
 164         usage(0);
 165     if(version_flag) {
 166         print_version(NULL);
 167         exit(0);
 168     }
 169     argc -= optidx;
 170     argv += optidx;
 171     if(argc == 0)
 172         usage(1);
 173     ret = sl_command(commands, argc, argv);
 174     if(ret == -1)
 175         krb5_warnx (context, "unrecognized command: %s", argv[0]);
 176     return ret;
 177 }