1 /* $NetBSD: kadmind.c,v 1.3 2023/06/19 21:41:41 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997-2004 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 "kadmin_locl.h"
37
38 static char *check_library = NULL;
39 static char *check_function = NULL;
40 static getarg_strings policy_libraries = { 0, NULL };
41 static char *config_file;
42 static char sHDB[] = "HDBGET:";
43 static char *keytab_str = sHDB;
44 static int help_flag;
45 static int version_flag;
46 static int debug_flag;
47 static char *port_str;
48 char *realm;
49
50 static int detach_from_console = -1;
51 int daemon_child = -1;
52
53 static struct getargs args[] = {
54 {
55 "config-file", 'c', arg_string, &config_file,
56 "location of config file", "file"
57 },
58 {
59 "keytab", 0, arg_string, &keytab_str,
60 "what keytab to use", "keytab"
61 },
62 { "realm", 'r', arg_string, &realm,
63 "realm to use", "realm"
64 },
65 #ifdef HAVE_DLOPEN
66 { "check-library", 0, arg_string, &check_library,
67 "library to load password check function from", "library" },
68 { "check-function", 0, arg_string, &check_function,
69 "password check function to load", "function" },
70 { "policy-libraries", 0, arg_strings, &policy_libraries,
71 "password check function to load", "function" },
72 #endif
73 { "debug", 'd', arg_flag, &debug_flag,
74 "enable debugging", NULL
75 },
76 {
77 "detach", 0 , arg_flag, &detach_from_console,
78 "detach from console", NULL
79 },
80 {
81 "daemon-child", 0 , arg_integer, &daemon_child,
82 "private argument, do not use", NULL
83 },
84 { "ports", 'p', arg_string, &port_str,
85 "ports to listen to", "port" },
86 { "help", 'h', arg_flag, &help_flag, NULL, NULL },
87 { "version", 'v', arg_flag, &version_flag, NULL, NULL }
88 };
89
90 static int num_args = sizeof(args) / sizeof(args[0]);
91
92 krb5_context context;
93
94 static void
usage(int ret)95 usage(int ret)
96 {
97 arg_printusage (args, num_args, NULL, "");
98 exit (ret);
99 }
100
101 int
main(int argc,char ** argv)102 main(int argc, char **argv)
103 {
104 krb5_error_code ret;
105 char **files;
106 int optidx = 0;
107 int i;
108 krb5_log_facility *logfacility;
109 krb5_keytab keytab;
110 krb5_socket_t sfd = rk_INVALID_SOCKET;
111
112 setprogname(argv[0]);
113
114 if (getarg(args, num_args, argc, argv, &optidx)) {
115 warnx("error at argument `%s'", argv[optidx]);
116 usage(1);
117 }
118
119 if (help_flag)
120 usage (0);
121
122 if (version_flag) {
123 print_version(NULL);
124 exit(0);
125 }
126
127 if (detach_from_console > 0 && daemon_child == -1)
128 roken_detach_prep(argc, argv, "--daemon-child");
129
130 ret = krb5_init_context(&context);
131 if (ret)
132 errx (1, "krb5_init_context failed: %d", ret);
133
134 argc -= optidx;
135 #ifndef __clang_analyzer__
136 argv += optidx;
137 #endif
138 if (argc != 0)
139 usage(1);
140
141 if (config_file == NULL) {
142 int aret;
143
144 aret = asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));
145 if (aret == -1)
146 errx(1, "out of memory");
147 }
148
149 ret = krb5_prepend_config_files_default(config_file, &files);
150 if (ret)
151 krb5_err(context, 1, ret, "getting configuration files");
152
153 ret = krb5_set_config_files(context, files);
154 krb5_free_config_files(files);
155 if(ret)
156 krb5_err(context, 1, ret, "reading configuration files");
157
158 ret = krb5_openlog(context, "kadmind", &logfacility);
159 if (ret)
160 krb5_err(context, 1, ret, "krb5_openlog");
161 ret = krb5_set_warn_dest(context, logfacility);
162 if (ret)
163 krb5_err(context, 1, ret, "krb5_set_warn_dest");
164
165 ret = krb5_kt_register(context, &hdb_get_kt_ops);
166 if(ret)
167 krb5_err(context, 1, ret, "krb5_kt_register");
168
169 ret = krb5_kt_resolve(context, keytab_str, &keytab);
170 if(ret)
171 krb5_err(context, 1, ret, "krb5_kt_resolve");
172
173 kadm5_setup_passwd_quality_check (context, check_library, check_function);
174
175 for (i = 0; i < policy_libraries.num_strings; i++) {
176 ret = kadm5_add_passwd_quality_verifier(context,
177 policy_libraries.strings[i]);
178 if (ret)
179 krb5_err(context, 1, ret, "kadm5_add_passwd_quality_verifier");
180 }
181 ret = kadm5_add_passwd_quality_verifier(context, NULL);
182 if (ret)
183 krb5_err(context, 1, ret, "kadm5_add_passwd_quality_verifier");
184
185 if(debug_flag) {
186 int debug_port;
187
188 if(port_str == NULL)
189 debug_port = krb5_getportbyname (context, "kerberos-adm",
190 "tcp", 749);
191 else
192 debug_port = htons(atoi(port_str));
193 mini_inetd(debug_port, &sfd);
194 } else {
195 #ifdef _WIN32
196 start_server(context, port_str);
197 #else
198 struct sockaddr_storage __ss;
199 struct sockaddr *sa = (struct sockaddr *)&__ss;
200 socklen_t sa_size = sizeof(__ss);
201
202 /*
203 * Check if we are running inside inetd or not, if not, start
204 * our own server.
205 */
206
207 if(roken_getsockname(STDIN_FILENO, sa, &sa_size) < 0 &&
208 rk_SOCK_ERRNO == ENOTSOCK) {
209 start_server(context, port_str);
210 }
211 #endif /* _WIN32 */
212 sfd = STDIN_FILENO;
213 }
214
215 if(realm)
216 krb5_set_default_realm(context, realm); /* XXX */
217
218 kadmind_loop(context, keytab, sfd);
219
220 return 0;
221 }
222