1c19800e8SDoug Rabson /*
2c19800e8SDoug Rabson * Copyright (c) 2005, PADL Software Pty Ltd.
3c19800e8SDoug Rabson * All rights reserved.
4c19800e8SDoug Rabson *
5c19800e8SDoug Rabson * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
6c19800e8SDoug Rabson *
7c19800e8SDoug Rabson * Redistribution and use in source and binary forms, with or without
8c19800e8SDoug Rabson * modification, are permitted provided that the following conditions
9c19800e8SDoug Rabson * are met:
10c19800e8SDoug Rabson *
11c19800e8SDoug Rabson * 1. Redistributions of source code must retain the above copyright
12c19800e8SDoug Rabson * notice, this list of conditions and the following disclaimer.
13c19800e8SDoug Rabson *
14c19800e8SDoug Rabson * 2. Redistributions in binary form must reproduce the above copyright
15c19800e8SDoug Rabson * notice, this list of conditions and the following disclaimer in the
16c19800e8SDoug Rabson * documentation and/or other materials provided with the distribution.
17c19800e8SDoug Rabson *
18c19800e8SDoug Rabson * 3. Neither the name of PADL Software nor the names of its contributors
19c19800e8SDoug Rabson * may be used to endorse or promote products derived from this software
20c19800e8SDoug Rabson * without specific prior written permission.
21c19800e8SDoug Rabson *
22c19800e8SDoug Rabson * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
23c19800e8SDoug Rabson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24c19800e8SDoug Rabson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25c19800e8SDoug Rabson * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
26c19800e8SDoug Rabson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27c19800e8SDoug Rabson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28c19800e8SDoug Rabson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29c19800e8SDoug Rabson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30c19800e8SDoug Rabson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31c19800e8SDoug Rabson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32c19800e8SDoug Rabson * SUCH DAMAGE.
33c19800e8SDoug Rabson */
34c19800e8SDoug Rabson
35c19800e8SDoug Rabson #include "kcm_locl.h"
36c19800e8SDoug Rabson #include <getarg.h>
37c19800e8SDoug Rabson #include <parse_bytes.h>
38c19800e8SDoug Rabson
39c19800e8SDoug Rabson static const char *config_file; /* location of kcm config file */
40c19800e8SDoug Rabson
41c19800e8SDoug Rabson size_t max_request = 0; /* maximal size of a request */
42c19800e8SDoug Rabson char *socket_path = NULL;
43c19800e8SDoug Rabson char *door_path = NULL;
44c19800e8SDoug Rabson
45c19800e8SDoug Rabson static char *max_request_str; /* `max_request' as a string */
46c19800e8SDoug Rabson
47c19800e8SDoug Rabson #ifdef SUPPORT_DETACH
48c19800e8SDoug Rabson int detach_from_console = -1;
49c19800e8SDoug Rabson #define DETACH_IS_DEFAULT FALSE
50c19800e8SDoug Rabson #endif
51c19800e8SDoug Rabson
52c19800e8SDoug Rabson static const char *system_cache_name = NULL;
53c19800e8SDoug Rabson static const char *system_keytab = NULL;
54c19800e8SDoug Rabson static const char *system_principal = NULL;
55c19800e8SDoug Rabson static const char *system_server = NULL;
56c19800e8SDoug Rabson static const char *system_perms = NULL;
57c19800e8SDoug Rabson static const char *system_user = NULL;
58c19800e8SDoug Rabson static const char *system_group = NULL;
59c19800e8SDoug Rabson
60c19800e8SDoug Rabson static const char *renew_life = NULL;
61c19800e8SDoug Rabson static const char *ticket_life = NULL;
62c19800e8SDoug Rabson
63c19800e8SDoug Rabson int launchd_flag = 0;
64c19800e8SDoug Rabson int disallow_getting_krbtgt = 0;
65c19800e8SDoug Rabson int name_constraints = -1;
66c19800e8SDoug Rabson
67c19800e8SDoug Rabson static int help_flag;
68c19800e8SDoug Rabson static int version_flag;
69c19800e8SDoug Rabson
70c19800e8SDoug Rabson static struct getargs args[] = {
71c19800e8SDoug Rabson {
72c19800e8SDoug Rabson "cache-name", 0, arg_string, &system_cache_name,
73c19800e8SDoug Rabson "system cache name", "cachename"
74c19800e8SDoug Rabson },
75c19800e8SDoug Rabson {
76c19800e8SDoug Rabson "config-file", 'c', arg_string, &config_file,
77c19800e8SDoug Rabson "location of config file", "file"
78c19800e8SDoug Rabson },
79c19800e8SDoug Rabson {
80c19800e8SDoug Rabson "group", 'g', arg_string, &system_group,
81c19800e8SDoug Rabson "system cache group", "group"
82c19800e8SDoug Rabson },
83c19800e8SDoug Rabson {
84c19800e8SDoug Rabson "max-request", 0, arg_string, &max_request,
85c19800e8SDoug Rabson "max size for a kcm-request", "size"
86c19800e8SDoug Rabson },
87c19800e8SDoug Rabson {
88c19800e8SDoug Rabson "launchd", 0, arg_flag, &launchd_flag,
89c19800e8SDoug Rabson "when in use by launchd"
90c19800e8SDoug Rabson },
91c19800e8SDoug Rabson #ifdef SUPPORT_DETACH
92c19800e8SDoug Rabson #if DETACH_IS_DEFAULT
93c19800e8SDoug Rabson {
94c19800e8SDoug Rabson "detach", 'D', arg_negative_flag, &detach_from_console,
95c19800e8SDoug Rabson "don't detach from console"
96c19800e8SDoug Rabson },
97c19800e8SDoug Rabson #else
98c19800e8SDoug Rabson {
99c19800e8SDoug Rabson "detach", 0 , arg_flag, &detach_from_console,
100c19800e8SDoug Rabson "detach from console"
101c19800e8SDoug Rabson },
102c19800e8SDoug Rabson #endif
103c19800e8SDoug Rabson #endif
104c19800e8SDoug Rabson { "help", 'h', arg_flag, &help_flag },
105c19800e8SDoug Rabson {
106c19800e8SDoug Rabson "system-principal", 'k', arg_string, &system_principal,
107c19800e8SDoug Rabson "system principal name", "principal"
108c19800e8SDoug Rabson },
109c19800e8SDoug Rabson {
110c19800e8SDoug Rabson "lifetime", 'l', arg_string, &ticket_life,
111c19800e8SDoug Rabson "lifetime of system tickets", "time"
112c19800e8SDoug Rabson },
113c19800e8SDoug Rabson {
114c19800e8SDoug Rabson "mode", 'm', arg_string, &system_perms,
115c19800e8SDoug Rabson "octal mode of system cache", "mode"
116c19800e8SDoug Rabson },
117c19800e8SDoug Rabson {
118c19800e8SDoug Rabson "name-constraints", 'n', arg_negative_flag, &name_constraints,
119c19800e8SDoug Rabson "disable credentials cache name constraints"
120c19800e8SDoug Rabson },
121c19800e8SDoug Rabson {
122c19800e8SDoug Rabson "disallow-getting-krbtgt", 0, arg_flag, &disallow_getting_krbtgt,
123c19800e8SDoug Rabson "disable fetching krbtgt from the cache"
124c19800e8SDoug Rabson },
125c19800e8SDoug Rabson {
126c19800e8SDoug Rabson "renewable-life", 'r', arg_string, &renew_life,
127c19800e8SDoug Rabson "renewable lifetime of system tickets", "time"
128c19800e8SDoug Rabson },
129c19800e8SDoug Rabson {
130c19800e8SDoug Rabson "socket-path", 's', arg_string, &socket_path,
131c19800e8SDoug Rabson "path to kcm domain socket", "path"
132c19800e8SDoug Rabson },
133c19800e8SDoug Rabson #ifdef HAVE_DOOR_CREATE
134c19800e8SDoug Rabson {
135c19800e8SDoug Rabson "door-path", 's', arg_string, &door_path,
136c19800e8SDoug Rabson "path to kcm door", "path"
137c19800e8SDoug Rabson },
138c19800e8SDoug Rabson #endif
139c19800e8SDoug Rabson {
140c19800e8SDoug Rabson "server", 'S', arg_string, &system_server,
141c19800e8SDoug Rabson "server to get system ticket for", "principal"
142c19800e8SDoug Rabson },
143c19800e8SDoug Rabson {
144c19800e8SDoug Rabson "keytab", 't', arg_string, &system_keytab,
145c19800e8SDoug Rabson "system keytab name", "keytab"
146c19800e8SDoug Rabson },
147c19800e8SDoug Rabson {
148c19800e8SDoug Rabson "user", 'u', arg_string, &system_user,
149c19800e8SDoug Rabson "system cache owner", "user"
150c19800e8SDoug Rabson },
151c19800e8SDoug Rabson { "version", 'v', arg_flag, &version_flag }
152c19800e8SDoug Rabson };
153c19800e8SDoug Rabson
154c19800e8SDoug Rabson static int num_args = sizeof(args) / sizeof(args[0]);
155c19800e8SDoug Rabson
156c19800e8SDoug Rabson static void
usage(int ret)157c19800e8SDoug Rabson usage(int ret)
158c19800e8SDoug Rabson {
159c19800e8SDoug Rabson arg_printusage (args, num_args, NULL, "");
160c19800e8SDoug Rabson exit (ret);
161c19800e8SDoug Rabson }
162c19800e8SDoug Rabson
parse_owners(kcm_ccache ccache)163c19800e8SDoug Rabson static int parse_owners(kcm_ccache ccache)
164c19800e8SDoug Rabson {
165c19800e8SDoug Rabson uid_t uid = 0;
166c19800e8SDoug Rabson gid_t gid = 0;
167c19800e8SDoug Rabson struct passwd *pw;
168c19800e8SDoug Rabson struct group *gr;
169c19800e8SDoug Rabson int uid_p = 0;
170c19800e8SDoug Rabson int gid_p = 0;
171c19800e8SDoug Rabson
172c19800e8SDoug Rabson if (system_user != NULL) {
173c19800e8SDoug Rabson if (isdigit((unsigned char)system_user[0])) {
174c19800e8SDoug Rabson pw = getpwuid(atoi(system_user));
175c19800e8SDoug Rabson } else {
176c19800e8SDoug Rabson pw = getpwnam(system_user);
177c19800e8SDoug Rabson }
178c19800e8SDoug Rabson if (pw == NULL) {
179c19800e8SDoug Rabson return errno;
180c19800e8SDoug Rabson }
181c19800e8SDoug Rabson
182c19800e8SDoug Rabson system_user = strdup(pw->pw_name);
183c19800e8SDoug Rabson if (system_user == NULL) {
184c19800e8SDoug Rabson return ENOMEM;
185c19800e8SDoug Rabson }
186c19800e8SDoug Rabson
187c19800e8SDoug Rabson uid = pw->pw_uid; uid_p = 1;
188c19800e8SDoug Rabson gid = pw->pw_gid; gid_p = 1;
189c19800e8SDoug Rabson }
190c19800e8SDoug Rabson
191c19800e8SDoug Rabson if (system_group != NULL) {
192c19800e8SDoug Rabson if (isdigit((unsigned char)system_group[0])) {
193c19800e8SDoug Rabson gr = getgrgid(atoi(system_group));
194c19800e8SDoug Rabson } else {
195c19800e8SDoug Rabson gr = getgrnam(system_group);
196c19800e8SDoug Rabson }
197c19800e8SDoug Rabson if (gr == NULL) {
198c19800e8SDoug Rabson return errno;
199c19800e8SDoug Rabson }
200c19800e8SDoug Rabson
201c19800e8SDoug Rabson gid = gr->gr_gid; gid_p = 1;
202c19800e8SDoug Rabson }
203c19800e8SDoug Rabson
204c19800e8SDoug Rabson if (uid_p)
205c19800e8SDoug Rabson ccache->uid = uid;
206c19800e8SDoug Rabson else
207c19800e8SDoug Rabson ccache->uid = 0; /* geteuid() XXX */
208c19800e8SDoug Rabson
209c19800e8SDoug Rabson if (gid_p)
210c19800e8SDoug Rabson ccache->gid = gid;
211c19800e8SDoug Rabson else
212c19800e8SDoug Rabson ccache->gid = 0; /* getegid() XXX */
213c19800e8SDoug Rabson
214c19800e8SDoug Rabson return 0;
215c19800e8SDoug Rabson }
216c19800e8SDoug Rabson
217c19800e8SDoug Rabson static const char *
kcm_system_config_get_string(const char * string)218c19800e8SDoug Rabson kcm_system_config_get_string(const char *string)
219c19800e8SDoug Rabson {
220c19800e8SDoug Rabson return krb5_config_get_string(kcm_context, NULL, "kcm",
221c19800e8SDoug Rabson "system_ccache", string, NULL);
222c19800e8SDoug Rabson }
223c19800e8SDoug Rabson
224c19800e8SDoug Rabson static krb5_error_code
ccache_init_system(void)225c19800e8SDoug Rabson ccache_init_system(void)
226c19800e8SDoug Rabson {
227c19800e8SDoug Rabson kcm_ccache ccache;
228c19800e8SDoug Rabson krb5_error_code ret;
229c19800e8SDoug Rabson
230c19800e8SDoug Rabson if (system_cache_name == NULL)
231c19800e8SDoug Rabson system_cache_name = kcm_system_config_get_string("cc_name");
232c19800e8SDoug Rabson
233c19800e8SDoug Rabson ret = kcm_ccache_new(kcm_context,
234c19800e8SDoug Rabson system_cache_name ? system_cache_name : "SYSTEM",
235c19800e8SDoug Rabson &ccache);
236c19800e8SDoug Rabson if (ret)
237c19800e8SDoug Rabson return ret;
238c19800e8SDoug Rabson
239c19800e8SDoug Rabson ccache->flags |= KCM_FLAGS_OWNER_IS_SYSTEM;
240c19800e8SDoug Rabson ccache->flags |= KCM_FLAGS_USE_KEYTAB;
241c19800e8SDoug Rabson
242c19800e8SDoug Rabson ret = parse_owners(ccache);
243c19800e8SDoug Rabson if (ret)
244c19800e8SDoug Rabson return ret;
245c19800e8SDoug Rabson
246c19800e8SDoug Rabson ret = krb5_parse_name(kcm_context, system_principal, &ccache->client);
247c19800e8SDoug Rabson if (ret) {
248c19800e8SDoug Rabson kcm_release_ccache(kcm_context, ccache);
249c19800e8SDoug Rabson return ret;
250c19800e8SDoug Rabson }
251c19800e8SDoug Rabson
252c19800e8SDoug Rabson if (system_server == NULL)
253c19800e8SDoug Rabson system_server = kcm_system_config_get_string("server");
254c19800e8SDoug Rabson
255c19800e8SDoug Rabson if (system_server != NULL) {
256c19800e8SDoug Rabson ret = krb5_parse_name(kcm_context, system_server, &ccache->server);
257c19800e8SDoug Rabson if (ret) {
258c19800e8SDoug Rabson kcm_release_ccache(kcm_context, ccache);
259c19800e8SDoug Rabson return ret;
260c19800e8SDoug Rabson }
261c19800e8SDoug Rabson }
262c19800e8SDoug Rabson
263c19800e8SDoug Rabson if (system_keytab == NULL)
264c19800e8SDoug Rabson system_keytab = kcm_system_config_get_string("keytab_name");
265c19800e8SDoug Rabson
266c19800e8SDoug Rabson if (system_keytab != NULL) {
267c19800e8SDoug Rabson ret = krb5_kt_resolve(kcm_context, system_keytab, &ccache->key.keytab);
268c19800e8SDoug Rabson } else {
269c19800e8SDoug Rabson ret = krb5_kt_default(kcm_context, &ccache->key.keytab);
270c19800e8SDoug Rabson }
271c19800e8SDoug Rabson if (ret) {
272c19800e8SDoug Rabson kcm_release_ccache(kcm_context, ccache);
273c19800e8SDoug Rabson return ret;
274c19800e8SDoug Rabson }
275c19800e8SDoug Rabson
276c19800e8SDoug Rabson if (renew_life == NULL)
277c19800e8SDoug Rabson renew_life = kcm_system_config_get_string("renew_life");
278c19800e8SDoug Rabson
279c19800e8SDoug Rabson if (renew_life == NULL)
280c19800e8SDoug Rabson renew_life = "1 month";
281c19800e8SDoug Rabson
282c19800e8SDoug Rabson if (renew_life != NULL) {
283c19800e8SDoug Rabson ccache->renew_life = parse_time(renew_life, "s");
284c19800e8SDoug Rabson if (ccache->renew_life < 0) {
285c19800e8SDoug Rabson kcm_release_ccache(kcm_context, ccache);
286c19800e8SDoug Rabson return EINVAL;
287c19800e8SDoug Rabson }
288c19800e8SDoug Rabson }
289c19800e8SDoug Rabson
290c19800e8SDoug Rabson if (ticket_life == NULL)
291c19800e8SDoug Rabson ticket_life = kcm_system_config_get_string("ticket_life");
292c19800e8SDoug Rabson
293c19800e8SDoug Rabson if (ticket_life != NULL) {
294c19800e8SDoug Rabson ccache->tkt_life = parse_time(ticket_life, "s");
295c19800e8SDoug Rabson if (ccache->tkt_life < 0) {
296c19800e8SDoug Rabson kcm_release_ccache(kcm_context, ccache);
297c19800e8SDoug Rabson return EINVAL;
298c19800e8SDoug Rabson }
299c19800e8SDoug Rabson }
300c19800e8SDoug Rabson
301c19800e8SDoug Rabson if (system_perms == NULL)
302c19800e8SDoug Rabson system_perms = kcm_system_config_get_string("mode");
303c19800e8SDoug Rabson
304c19800e8SDoug Rabson if (system_perms != NULL) {
305c19800e8SDoug Rabson int mode;
306c19800e8SDoug Rabson
307c19800e8SDoug Rabson if (sscanf(system_perms, "%o", &mode) != 1)
308c19800e8SDoug Rabson return EINVAL;
309c19800e8SDoug Rabson
310c19800e8SDoug Rabson ccache->mode = mode;
311c19800e8SDoug Rabson }
312c19800e8SDoug Rabson
313c19800e8SDoug Rabson if (disallow_getting_krbtgt == -1) {
314c19800e8SDoug Rabson disallow_getting_krbtgt =
315c19800e8SDoug Rabson krb5_config_get_bool_default(kcm_context, NULL, FALSE, "kcm",
316c19800e8SDoug Rabson "disallow-getting-krbtgt", NULL);
317c19800e8SDoug Rabson }
318c19800e8SDoug Rabson
319c19800e8SDoug Rabson /* enqueue default actions for credentials cache */
320c19800e8SDoug Rabson ret = kcm_ccache_enqueue_default(kcm_context, ccache, NULL);
321c19800e8SDoug Rabson
322c19800e8SDoug Rabson kcm_release_ccache(kcm_context, ccache); /* retained by event queue */
323c19800e8SDoug Rabson
324c19800e8SDoug Rabson return ret;
325c19800e8SDoug Rabson }
326c19800e8SDoug Rabson
327c19800e8SDoug Rabson void
kcm_configure(int argc,char ** argv)328c19800e8SDoug Rabson kcm_configure(int argc, char **argv)
329c19800e8SDoug Rabson {
330c19800e8SDoug Rabson krb5_error_code ret;
331c19800e8SDoug Rabson int optind = 0;
332c19800e8SDoug Rabson const char *p;
333c19800e8SDoug Rabson
334c19800e8SDoug Rabson while(getarg(args, num_args, argc, argv, &optind))
335c19800e8SDoug Rabson warnx("error at argument `%s'", argv[optind]);
336c19800e8SDoug Rabson
337c19800e8SDoug Rabson if(help_flag)
338c19800e8SDoug Rabson usage (0);
339c19800e8SDoug Rabson
340c19800e8SDoug Rabson if (version_flag) {
341c19800e8SDoug Rabson print_version(NULL);
342c19800e8SDoug Rabson exit(0);
343c19800e8SDoug Rabson }
344c19800e8SDoug Rabson
345c19800e8SDoug Rabson argc -= optind;
346c19800e8SDoug Rabson argv += optind;
347c19800e8SDoug Rabson
348c19800e8SDoug Rabson if (argc != 0)
349c19800e8SDoug Rabson usage(1);
350c19800e8SDoug Rabson
351c19800e8SDoug Rabson {
352c19800e8SDoug Rabson char **files;
353c19800e8SDoug Rabson
354c19800e8SDoug Rabson if(config_file == NULL)
355c19800e8SDoug Rabson config_file = _PATH_KCM_CONF;
356c19800e8SDoug Rabson
357c19800e8SDoug Rabson ret = krb5_prepend_config_files_default(config_file, &files);
358c19800e8SDoug Rabson if (ret)
359c19800e8SDoug Rabson krb5_err(kcm_context, 1, ret, "getting configuration files");
360c19800e8SDoug Rabson
361c19800e8SDoug Rabson ret = krb5_set_config_files(kcm_context, files);
362c19800e8SDoug Rabson krb5_free_config_files(files);
363c19800e8SDoug Rabson if(ret)
364c19800e8SDoug Rabson krb5_err(kcm_context, 1, ret, "reading configuration files");
365c19800e8SDoug Rabson }
366c19800e8SDoug Rabson
367c19800e8SDoug Rabson if(max_request_str)
368c19800e8SDoug Rabson max_request = parse_bytes(max_request_str, NULL);
369c19800e8SDoug Rabson
370c19800e8SDoug Rabson if(max_request == 0){
371c19800e8SDoug Rabson p = krb5_config_get_string (kcm_context,
372c19800e8SDoug Rabson NULL,
373c19800e8SDoug Rabson "kcm",
374c19800e8SDoug Rabson "max-request",
375c19800e8SDoug Rabson NULL);
376c19800e8SDoug Rabson if(p)
377c19800e8SDoug Rabson max_request = parse_bytes(p, NULL);
378c19800e8SDoug Rabson }
379c19800e8SDoug Rabson
380c19800e8SDoug Rabson if (system_principal == NULL) {
381c19800e8SDoug Rabson system_principal = kcm_system_config_get_string("principal");
382c19800e8SDoug Rabson }
383c19800e8SDoug Rabson
384c19800e8SDoug Rabson if (system_principal != NULL) {
385c19800e8SDoug Rabson ret = ccache_init_system();
386c19800e8SDoug Rabson if (ret)
387c19800e8SDoug Rabson krb5_err(kcm_context, 1, ret, "initializing system ccache");
388c19800e8SDoug Rabson }
389c19800e8SDoug Rabson
390c19800e8SDoug Rabson #ifdef SUPPORT_DETACH
391 if(detach_from_console == -1)
392 detach_from_console = krb5_config_get_bool_default(kcm_context, NULL,
393 DETACH_IS_DEFAULT,
394 "kcm",
395 "detach", NULL);
396 #endif
397 kcm_openlog();
398 if(max_request == 0)
399 max_request = 64 * 1024;
400 }
401
402