kadmin/kadmind.c

   1 /*
   2  * Copyright (c) 1997-2002 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 "kadmin_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 static char *check_library  = NULL;
  39 static char *check_function = NULL;
  40 static char *config_file;
  41 static char *keyfile;
  42 static char *keytab_str = "HDB:";
  43 static int help_flag;
  44 static int version_flag;
  45 static int debug_flag;
  46 static char *port_str;
  47 char *realm;
  48 #ifdef KRB4
  49 int do_kerberos4 = 1;
  50 #endif
  51
  52 static struct getargs args[] = {
  53     {
  54         "config-file",  'c',    arg_string,     &config_file,
  55         "location of config file",      "file"
  56     },
  57     {
  58         "key-file",     'k',    arg_string, &keyfile,
  59         "location of master key file", "file"
  60     },
  61     {
  62         "keytab",       0,      arg_string, &keytab_str,
  63         "what keytab to use", "keytab"
  64     },
  65     {   "realm",        'r',    arg_string,   &realm,
  66         "realm to use", "realm"
  67     },
  68 #ifdef HAVE_DLOPEN
  69     { "check-library", 0, arg_string, &check_library,
  70       "library to load password check function from", "library" },
  71     { "check-function", 0, arg_string, &check_function,
  72       "password check function to load", "function" },
  73 #endif
  74     {   "debug",        'd',    arg_flag,   &debug_flag,
  75         "enable debugging"
  76     },
  77 #ifdef KRB4
  78     {   "kerberos4", 0, arg_negative_flag, &do_kerberos4,
  79         "don't respond to kerberos 4 requests"
  80     },
  81 #endif
  82     {   "ports",        'p',    arg_string, &port_str,
  83         "ports to listen to", "port" },
  84     {   "help",         'h',    arg_flag,   &help_flag },
  85     {   "version",      'v',    arg_flag,   &version_flag }
  86 };
  87
  88 static int num_args = sizeof(args) / sizeof(args[0]);
  89
  90 krb5_context context;
  91
  92 static void
  93 usage(int ret)
  94 {
  95     arg_printusage (args, num_args, NULL, "");
  96     exit (ret);
  97 }
  98
  99 int
 100 main(int argc, char **argv)
 101 {
 102     krb5_error_code ret;
 103     krb5_config_section *cf;
 104     int optind = 0;
 105     int e;
 106     krb5_log_facility *logf;
 107     krb5_keytab keytab;
 108
 109     setprogname(argv[0]);
 110
 111     ret = krb5_init_context(&context);
 112     if (ret)
 113         errx (1, "krb5_init_context failed: %d", ret);
 114
 115     ret = krb5_openlog(context, "kadmind", &logf);
 116     ret = krb5_set_warn_dest(context, logf);
 117
 118     while((e = getarg(args, num_args, argc, argv, &optind)))
 119         warnx("error at argument `%s'", argv[optind]);
 120
 121     if (help_flag)
 122         usage (0);
 123
 124     if (version_flag) {
 125         print_version(NULL);
 126         exit(0);
 127     }
 128
 129     argc -= optind;
 130     argv += optind;
 131
 132     ret = krb5_kt_register(context, &hdb_kt_ops);
 133     if(ret)
 134         krb5_err(context, 1, ret, "krb5_kt_register");
 135
 136     if (config_file == NULL)
 137         config_file = HDB_DB_DIR "/kdc.conf";
 138
 139     if(krb5_config_parse_file(context, config_file, &cf) == 0) {
 140         const char *p = krb5_config_get_string (context, cf,
 141                                                 "kdc", "key-file", NULL);
 142         if (p)
 143             keyfile = strdup(p);
 144     }
 145
 146     ret = krb5_kt_resolve(context, keytab_str, &keytab);
 147     if(ret)
 148         krb5_err(context, 1, ret, "krb5_kt_resolve");
 149
 150     kadm5_setup_passwd_quality_check (context, check_library, check_function);
 151
 152     {
 153         int fd = 0;
 154         struct sockaddr_storage __ss;
 155         struct sockaddr *sa = (struct sockaddr *)&__ss;
 156         socklen_t sa_size = sizeof(__ss);
 157         krb5_auth_context ac = NULL;
 158         int debug_port;
 159
 160         if(debug_flag) {
 161             if(port_str == NULL)
 162                 debug_port = krb5_getportbyname (context, "kerberos-adm",
 163                                                  "tcp", 749);
 164             else
 165                 debug_port = htons(atoi(port_str));
 166             mini_inetd(debug_port);
 167         } else if(roken_getsockname(STDIN_FILENO, sa, &sa_size) < 0 &&
 168                    errno == ENOTSOCK) {
 169             parse_ports(context, port_str ? port_str : "+");
 170             pidfile(NULL);
 171             start_server(context);
 172         }
 173         if(realm)
 174             krb5_set_default_realm(context, realm); /* XXX */
 175         kadmind_loop(context, ac, keytab, fd);
 176     }
 177     return 0;
 178 }