1b528cefcSMark Murray /*
2c19800e8SDoug Rabson * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
3b528cefcSMark Murray * (Royal Institute of Technology, Stockholm, Sweden).
4b528cefcSMark Murray * All rights reserved.
5b528cefcSMark Murray *
6b528cefcSMark Murray * Redistribution and use in source and binary forms, with or without
7b528cefcSMark Murray * modification, are permitted provided that the following conditions
8b528cefcSMark Murray * are met:
9b528cefcSMark Murray *
10b528cefcSMark Murray * 1. Redistributions of source code must retain the above copyright
11b528cefcSMark Murray * notice, this list of conditions and the following disclaimer.
12b528cefcSMark Murray *
13b528cefcSMark Murray * 2. Redistributions in binary form must reproduce the above copyright
14b528cefcSMark Murray * notice, this list of conditions and the following disclaimer in the
15b528cefcSMark Murray * documentation and/or other materials provided with the distribution.
16b528cefcSMark Murray *
17b528cefcSMark Murray * 3. Neither the name of the Institute nor the names of its contributors
18b528cefcSMark Murray * may be used to endorse or promote products derived from this software
19b528cefcSMark Murray * without specific prior written permission.
20b528cefcSMark Murray *
21b528cefcSMark Murray * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22b528cefcSMark Murray * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23b528cefcSMark Murray * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24b528cefcSMark Murray * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25b528cefcSMark Murray * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26b528cefcSMark Murray * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27b528cefcSMark Murray * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28b528cefcSMark Murray * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29b528cefcSMark Murray * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30b528cefcSMark Murray * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31b528cefcSMark Murray * SUCH DAMAGE.
32b528cefcSMark Murray */
33b528cefcSMark Murray
34b528cefcSMark Murray #include "iprop.h"
35b528cefcSMark Murray
36c19800e8SDoug Rabson RCSID("$Id$");
375e9cd1aeSAssar Westerlund
385e9cd1aeSAssar Westerlund static const char *config_name = "ipropd-slave";
39c19800e8SDoug Rabson
40c19800e8SDoug Rabson static krb5_log_facility *log_facility;
41c19800e8SDoug Rabson static char five_min[] = "5 min";
42b528cefcSMark Murray static char *server_time_lost = five_min;
43b528cefcSMark Murray static int time_before_lost;
44c19800e8SDoug Rabson const char *slave_str = NULL;
45c19800e8SDoug Rabson
46b528cefcSMark Murray static int
connect_to_master(krb5_context context,const char * master,const char * port_str)47b528cefcSMark Murray connect_to_master (krb5_context context, const char *master,
48b528cefcSMark Murray const char *port_str)
49b528cefcSMark Murray {
50b528cefcSMark Murray char port[NI_MAXSERV];
51b528cefcSMark Murray struct addrinfo *ai, *a;
52b528cefcSMark Murray struct addrinfo hints;
53b528cefcSMark Murray int error;
54b528cefcSMark Murray int s = -1;
55b528cefcSMark Murray
56c19800e8SDoug Rabson memset (&hints, 0, sizeof(hints));
575e9cd1aeSAssar Westerlund hints.ai_socktype = SOCK_STREAM;
58c19800e8SDoug Rabson
59c19800e8SDoug Rabson if (port_str == NULL) {
60c19800e8SDoug Rabson snprintf(port, sizeof(port), "%u", IPROP_PORT);
61c19800e8SDoug Rabson port_str = port;
62c19800e8SDoug Rabson }
63c19800e8SDoug Rabson
64c19800e8SDoug Rabson error = getaddrinfo (master, port_str, &hints, &ai);
65c19800e8SDoug Rabson if (error) {
66c19800e8SDoug Rabson krb5_warnx(context, "Failed to get address of to %s: %s",
67c19800e8SDoug Rabson master, gai_strerror(error));
68c19800e8SDoug Rabson return -1;
69c19800e8SDoug Rabson }
70c19800e8SDoug Rabson
71c19800e8SDoug Rabson for (a = ai; a != NULL; a = a->ai_next) {
72c19800e8SDoug Rabson char node[NI_MAXHOST];
73b528cefcSMark Murray error = getnameinfo(a->ai_addr, a->ai_addrlen,
74b528cefcSMark Murray node, sizeof(node), NULL, 0, NI_NUMERICHOST);
75b528cefcSMark Murray if (error)
76b528cefcSMark Murray strlcpy(node, "[unknown-addr]", sizeof(node));
77b528cefcSMark Murray
78b528cefcSMark Murray s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
79b528cefcSMark Murray if (s < 0)
80b528cefcSMark Murray continue;
81b528cefcSMark Murray if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
82b528cefcSMark Murray krb5_warn(context, errno, "connection failed to %s[%s]",
835e9cd1aeSAssar Westerlund master, node);
84c19800e8SDoug Rabson close (s);
85b528cefcSMark Murray continue;
86b528cefcSMark Murray }
87b528cefcSMark Murray krb5_warnx(context, "connection successful "
88b528cefcSMark Murray "to master: %s[%s]", master, node);
89c19800e8SDoug Rabson break;
90b528cefcSMark Murray }
91b528cefcSMark Murray freeaddrinfo (ai);
925e9cd1aeSAssar Westerlund
93b528cefcSMark Murray if (a == NULL)
945e9cd1aeSAssar Westerlund return -1;
955e9cd1aeSAssar Westerlund
965e9cd1aeSAssar Westerlund return s;
975e9cd1aeSAssar Westerlund }
985e9cd1aeSAssar Westerlund
995e9cd1aeSAssar Westerlund static void
get_creds(krb5_context context,const char * keytab_str,krb5_ccache * cache,const char * serverhost)1005e9cd1aeSAssar Westerlund get_creds(krb5_context context, const char *keytab_str,
1015e9cd1aeSAssar Westerlund krb5_ccache *cache, const char *serverhost)
1025e9cd1aeSAssar Westerlund {
1035e9cd1aeSAssar Westerlund krb5_keytab keytab;
1045e9cd1aeSAssar Westerlund krb5_principal client;
105c19800e8SDoug Rabson krb5_error_code ret;
106c19800e8SDoug Rabson krb5_get_init_creds_opt *init_opts;
107b528cefcSMark Murray krb5_creds creds;
108b528cefcSMark Murray char *server;
109b528cefcSMark Murray char keytab_buf[256];
110c19800e8SDoug Rabson
111c19800e8SDoug Rabson if (keytab_str == NULL) {
112b528cefcSMark Murray ret = krb5_kt_default_name (context, keytab_buf, sizeof(keytab_buf));
113c19800e8SDoug Rabson if (ret)
114b528cefcSMark Murray krb5_err (context, 1, ret, "krb5_kt_default_name");
115b528cefcSMark Murray keytab_str = keytab_buf;
116b528cefcSMark Murray }
117b528cefcSMark Murray
118c19800e8SDoug Rabson ret = krb5_kt_resolve(context, keytab_str, &keytab);
119b528cefcSMark Murray if(ret)
120c19800e8SDoug Rabson krb5_err(context, 1, ret, "%s", keytab_str);
121b528cefcSMark Murray
122b528cefcSMark Murray
123b528cefcSMark Murray ret = krb5_sname_to_principal (context, slave_str, IPROP_NAME,
124b528cefcSMark Murray KRB5_NT_SRV_HST, &client);
125b528cefcSMark Murray if (ret) krb5_err(context, 1, ret, "krb5_sname_to_principal");
126b528cefcSMark Murray
127b528cefcSMark Murray ret = krb5_get_init_creds_opt_alloc(context, &init_opts);
128b528cefcSMark Murray if (ret) krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
129b528cefcSMark Murray
130b528cefcSMark Murray asprintf (&server, "%s/%s", IPROP_NAME, serverhost);
131b528cefcSMark Murray if (server == NULL)
132b528cefcSMark Murray krb5_errx (context, 1, "malloc: no memory");
133b528cefcSMark Murray
134b528cefcSMark Murray ret = krb5_get_init_creds_keytab(context, &creds, client, keytab,
135b528cefcSMark Murray 0, server, init_opts);
136b528cefcSMark Murray free (server);
137b528cefcSMark Murray krb5_get_init_creds_opt_free(context, init_opts);
138c19800e8SDoug Rabson if(ret) krb5_err(context, 1, ret, "krb5_get_init_creds");
139b528cefcSMark Murray
140b528cefcSMark Murray ret = krb5_kt_close(context, keytab);
141b528cefcSMark Murray if(ret) krb5_err(context, 1, ret, "krb5_kt_close");
142b528cefcSMark Murray
143c19800e8SDoug Rabson ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, cache);
144b528cefcSMark Murray if(ret) krb5_err(context, 1, ret, "krb5_cc_new_unique");
145b528cefcSMark Murray
146b528cefcSMark Murray ret = krb5_cc_initialize(context, *cache, client);
147b528cefcSMark Murray if(ret) krb5_err(context, 1, ret, "krb5_cc_initialize");
148b528cefcSMark Murray
149b528cefcSMark Murray ret = krb5_cc_store_cred(context, *cache, &creds);
150b528cefcSMark Murray if(ret) krb5_err(context, 1, ret, "krb5_cc_store_cred");
151b528cefcSMark Murray
152c19800e8SDoug Rabson krb5_free_cred_contents(context, &creds);
153b528cefcSMark Murray krb5_free_principal(context, client);
154c19800e8SDoug Rabson }
155b528cefcSMark Murray
156b528cefcSMark Murray static krb5_error_code
ihave(krb5_context context,krb5_auth_context auth_context,int fd,uint32_t version)157b528cefcSMark Murray ihave (krb5_context context, krb5_auth_context auth_context,
1585e9cd1aeSAssar Westerlund int fd, uint32_t version)
159b528cefcSMark Murray {
160b528cefcSMark Murray int ret;
161b528cefcSMark Murray u_char buf[8];
162b528cefcSMark Murray krb5_storage *sp;
163b528cefcSMark Murray krb5_data data;
164b528cefcSMark Murray
165c19800e8SDoug Rabson sp = krb5_storage_from_mem (buf, 8);
166c19800e8SDoug Rabson krb5_store_int32 (sp, I_HAVE);
167b528cefcSMark Murray krb5_store_int32 (sp, version);
168c19800e8SDoug Rabson krb5_storage_free (sp);
169c19800e8SDoug Rabson data.length = 8;
170c19800e8SDoug Rabson data.data = buf;
171b528cefcSMark Murray
172b528cefcSMark Murray ret = krb5_write_priv_message(context, auth_context, &fd, &data);
173b528cefcSMark Murray if (ret)
174b528cefcSMark Murray krb5_warn (context, ret, "krb5_write_message");
175b528cefcSMark Murray return ret;
176b528cefcSMark Murray }
177b528cefcSMark Murray
178b528cefcSMark Murray static void
receive_loop(krb5_context context,krb5_storage * sp,kadm5_server_context * server_context)179b528cefcSMark Murray receive_loop (krb5_context context,
180b528cefcSMark Murray krb5_storage *sp,
181b528cefcSMark Murray kadm5_server_context *server_context)
182c19800e8SDoug Rabson {
183b528cefcSMark Murray int ret;
184b528cefcSMark Murray off_t left, right;
185c19800e8SDoug Rabson void *buf;
186c19800e8SDoug Rabson int32_t vers, vers2;
187c19800e8SDoug Rabson ssize_t sret;
1888373020dSJacques Vidrine
1898373020dSJacques Vidrine /*
190b528cefcSMark Murray * Seek to the current version of the local database.
191c19800e8SDoug Rabson */
192c19800e8SDoug Rabson do {
193c19800e8SDoug Rabson int32_t len, timestamp, tmp;
194c19800e8SDoug Rabson enum kadm_ops op;
195c19800e8SDoug Rabson
196c19800e8SDoug Rabson if(krb5_ret_int32 (sp, &vers) != 0)
1978373020dSJacques Vidrine return;
1988373020dSJacques Vidrine krb5_ret_int32 (sp, ×tamp);
199c19800e8SDoug Rabson krb5_ret_int32 (sp, &tmp);
200c19800e8SDoug Rabson op = tmp;
201c19800e8SDoug Rabson krb5_ret_int32 (sp, &len);
202c19800e8SDoug Rabson if ((uint32_t)vers <= server_context->log_context.version)
203c19800e8SDoug Rabson krb5_storage_seek(sp, len + 8, SEEK_CUR);
204c19800e8SDoug Rabson } while((uint32_t)vers <= server_context->log_context.version);
205b528cefcSMark Murray
206b528cefcSMark Murray /*
207c19800e8SDoug Rabson * Read up rest of the entires into the memory...
208c19800e8SDoug Rabson */
209c19800e8SDoug Rabson left = krb5_storage_seek (sp, -16, SEEK_CUR);
210c19800e8SDoug Rabson right = krb5_storage_seek (sp, 0, SEEK_END);
2118373020dSJacques Vidrine buf = malloc (right - left);
212b528cefcSMark Murray if (buf == NULL && (right - left) != 0)
213b528cefcSMark Murray krb5_errx (context, 1, "malloc: no memory");
214c19800e8SDoug Rabson
215c19800e8SDoug Rabson /*
216b528cefcSMark Murray * ...and then write them out to the on-disk log.
217b528cefcSMark Murray */
218b528cefcSMark Murray krb5_storage_seek (sp, left, SEEK_SET);
219b528cefcSMark Murray krb5_storage_read (sp, buf, right - left);
220c19800e8SDoug Rabson sret = write (server_context->log_context.log_fd, buf, right-left);
221c19800e8SDoug Rabson if (sret != right - left)
222c19800e8SDoug Rabson krb5_err(context, 1, errno, "Failed to write log to disk");
223c19800e8SDoug Rabson ret = fsync (server_context->log_context.log_fd);
224b528cefcSMark Murray if (ret)
225c19800e8SDoug Rabson krb5_err(context, 1, errno, "Failed to sync log to disk");
226c19800e8SDoug Rabson free (buf);
227c19800e8SDoug Rabson
228c19800e8SDoug Rabson /*
229c19800e8SDoug Rabson * Go back to the startpoint and start to commit the entires to
230c19800e8SDoug Rabson * the database.
231c19800e8SDoug Rabson */
232c19800e8SDoug Rabson krb5_storage_seek (sp, left, SEEK_SET);
233c19800e8SDoug Rabson
234b528cefcSMark Murray for(;;) {
235b528cefcSMark Murray int32_t len, len2, timestamp, tmp;
236b528cefcSMark Murray off_t cur, cur2;
237c19800e8SDoug Rabson enum kadm_ops op;
238c19800e8SDoug Rabson
239c19800e8SDoug Rabson if(krb5_ret_int32 (sp, &vers) != 0)
240c19800e8SDoug Rabson break;
241c19800e8SDoug Rabson ret = krb5_ret_int32 (sp, ×tamp);
242c19800e8SDoug Rabson if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
243c19800e8SDoug Rabson ret = krb5_ret_int32 (sp, &tmp);
244b528cefcSMark Murray if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
245c19800e8SDoug Rabson op = tmp;
246c19800e8SDoug Rabson ret = krb5_ret_int32 (sp, &len);
247c19800e8SDoug Rabson if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
248c19800e8SDoug Rabson if (len < 0)
249c19800e8SDoug Rabson krb5_errx(context, 1, "log is corrupted, "
250c19800e8SDoug Rabson "negative length of entry version %ld: %ld",
251c19800e8SDoug Rabson (long)vers, (long)len);
252c19800e8SDoug Rabson cur = krb5_storage_seek(sp, 0, SEEK_CUR);
253c19800e8SDoug Rabson
254c19800e8SDoug Rabson krb5_warnx (context, "replaying entry %d", (int)vers);
255c19800e8SDoug Rabson
256c19800e8SDoug Rabson ret = kadm5_log_replay (server_context,
257c19800e8SDoug Rabson op, vers, len, sp);
258c19800e8SDoug Rabson if (ret) {
259c19800e8SDoug Rabson const char *s = krb5_get_error_message(server_context->context, ret);
260c19800e8SDoug Rabson krb5_warnx (context,
261c19800e8SDoug Rabson "kadm5_log_replay: %ld. Lost entry entry, "
262c19800e8SDoug Rabson "Database out of sync ?: %s (%d)",
263c19800e8SDoug Rabson (long)vers, s ? s : "unknown error", ret);
264c19800e8SDoug Rabson krb5_free_error_message(context, s);
265c19800e8SDoug Rabson }
266c19800e8SDoug Rabson
267c19800e8SDoug Rabson {
268c19800e8SDoug Rabson /*
269c19800e8SDoug Rabson * Make sure the krb5_log_replay does the right thing wrt
270c19800e8SDoug Rabson * reading out data from the sp.
271c19800e8SDoug Rabson */
272c19800e8SDoug Rabson cur2 = krb5_storage_seek(sp, 0, SEEK_CUR);
273c19800e8SDoug Rabson if (cur + len != cur2)
2745e9cd1aeSAssar Westerlund krb5_errx(context, 1,
2755e9cd1aeSAssar Westerlund "kadm5_log_reply version: %ld didn't read the whole entry",
2765e9cd1aeSAssar Westerlund (long)vers);
2775e9cd1aeSAssar Westerlund }
2785e9cd1aeSAssar Westerlund
2795e9cd1aeSAssar Westerlund if (krb5_ret_int32 (sp, &len2) != 0)
2805e9cd1aeSAssar Westerlund krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
2815e9cd1aeSAssar Westerlund if(krb5_ret_int32 (sp, &vers2) != 0)
2825e9cd1aeSAssar Westerlund krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
283c19800e8SDoug Rabson
2845e9cd1aeSAssar Westerlund if (len != len2)
2855e9cd1aeSAssar Westerlund krb5_errx(context, 1, "entry %ld: len != len2", (long)vers);
2865e9cd1aeSAssar Westerlund if (vers != vers2)
2875e9cd1aeSAssar Westerlund krb5_errx(context, 1, "entry %ld: vers != vers2", (long)vers);
2885e9cd1aeSAssar Westerlund }
2895e9cd1aeSAssar Westerlund
290b528cefcSMark Murray /*
291c19800e8SDoug Rabson * Update version
292b528cefcSMark Murray */
293b528cefcSMark Murray
294b528cefcSMark Murray server_context->log_context.version = vers;
295b528cefcSMark Murray }
2965e9cd1aeSAssar Westerlund
297c19800e8SDoug Rabson static void
receive(krb5_context context,krb5_storage * sp,kadm5_server_context * server_context)298c19800e8SDoug Rabson receive (krb5_context context,
299c19800e8SDoug Rabson krb5_storage *sp,
300c19800e8SDoug Rabson kadm5_server_context *server_context)
301c19800e8SDoug Rabson {
302c19800e8SDoug Rabson int ret;
303c19800e8SDoug Rabson
304c19800e8SDoug Rabson ret = server_context->db->hdb_open(context,
305c19800e8SDoug Rabson server_context->db,
306c19800e8SDoug Rabson O_RDWR | O_CREAT, 0600);
307c19800e8SDoug Rabson if (ret)
308c19800e8SDoug Rabson krb5_err (context, 1, ret, "db->open");
309c19800e8SDoug Rabson
310c19800e8SDoug Rabson receive_loop (context, sp, server_context);
311c19800e8SDoug Rabson
312c19800e8SDoug Rabson ret = server_context->db->hdb_close (context, server_context->db);
313c19800e8SDoug Rabson if (ret)
314c19800e8SDoug Rabson krb5_err (context, 1, ret, "db->close");
315c19800e8SDoug Rabson }
316c19800e8SDoug Rabson
317c19800e8SDoug Rabson static void
send_im_here(krb5_context context,int fd,krb5_auth_context auth_context)318c19800e8SDoug Rabson send_im_here (krb5_context context, int fd,
319c19800e8SDoug Rabson krb5_auth_context auth_context)
320c19800e8SDoug Rabson {
321c19800e8SDoug Rabson krb5_storage *sp;
3225e9cd1aeSAssar Westerlund krb5_data data;
3235e9cd1aeSAssar Westerlund int ret;
3245e9cd1aeSAssar Westerlund
3255e9cd1aeSAssar Westerlund ret = krb5_data_alloc (&data, 4);
3265e9cd1aeSAssar Westerlund if (ret)
3275e9cd1aeSAssar Westerlund krb5_err (context, 1, ret, "send_im_here");
3285e9cd1aeSAssar Westerlund
3295e9cd1aeSAssar Westerlund sp = krb5_storage_from_data (&data);
330c19800e8SDoug Rabson if (sp == NULL)
3315e9cd1aeSAssar Westerlund krb5_errx (context, 1, "krb5_storage_from_data");
3325bda878eSJacques Vidrine krb5_store_int32(sp, I_AM_HERE);
3335bda878eSJacques Vidrine krb5_storage_free(sp);
3345bda878eSJacques Vidrine
335c19800e8SDoug Rabson ret = krb5_write_priv_message(context, auth_context, &fd, &data);
336c19800e8SDoug Rabson krb5_data_free(&data);
337c19800e8SDoug Rabson
3385bda878eSJacques Vidrine if (ret)
3395bda878eSJacques Vidrine krb5_err (context, 1, ret, "krb5_write_priv_message");
3405bda878eSJacques Vidrine }
3415bda878eSJacques Vidrine
3425bda878eSJacques Vidrine static krb5_error_code
receive_everything(krb5_context context,int fd,kadm5_server_context * server_context,krb5_auth_context auth_context)3435bda878eSJacques Vidrine receive_everything (krb5_context context, int fd,
3445bda878eSJacques Vidrine kadm5_server_context *server_context,
3455bda878eSJacques Vidrine krb5_auth_context auth_context)
3465bda878eSJacques Vidrine {
3475bda878eSJacques Vidrine int ret;
3485bda878eSJacques Vidrine krb5_data data;
3495bda878eSJacques Vidrine int32_t vno = 0;
350c19800e8SDoug Rabson int32_t opcode;
3515e9cd1aeSAssar Westerlund krb5_storage *sp;
3525e9cd1aeSAssar Westerlund
3535e9cd1aeSAssar Westerlund char *dbname;
354c19800e8SDoug Rabson HDB *mydb;
3555e9cd1aeSAssar Westerlund
3565e9cd1aeSAssar Westerlund krb5_warnx(context, "receive complete database");
3575e9cd1aeSAssar Westerlund
3585e9cd1aeSAssar Westerlund asprintf(&dbname, "%s-NEW", server_context->db->hdb_name);
3595e9cd1aeSAssar Westerlund ret = hdb_create(context, &mydb, dbname);
3605e9cd1aeSAssar Westerlund if(ret)
3615e9cd1aeSAssar Westerlund krb5_err(context,1, ret, "hdb_create");
362c19800e8SDoug Rabson free(dbname);
363c19800e8SDoug Rabson
3645e9cd1aeSAssar Westerlund ret = hdb_set_master_keyfile (context,
3655e9cd1aeSAssar Westerlund mydb, server_context->config.stash_file);
3665e9cd1aeSAssar Westerlund if(ret)
367c19800e8SDoug Rabson krb5_err(context,1, ret, "hdb_set_master_keyfile");
368c19800e8SDoug Rabson
369c19800e8SDoug Rabson /* I really want to use O_EXCL here, but given that I can't easily clean
3705e9cd1aeSAssar Westerlund up on error, I won't */
3715e9cd1aeSAssar Westerlund ret = mydb->hdb_open(context, mydb, O_RDWR | O_CREAT | O_TRUNC, 0600);
3725e9cd1aeSAssar Westerlund if (ret)
3735e9cd1aeSAssar Westerlund krb5_err (context, 1, ret, "db->open");
374c19800e8SDoug Rabson
375c19800e8SDoug Rabson sp = NULL;
376c19800e8SDoug Rabson do {
3775e9cd1aeSAssar Westerlund ret = krb5_read_priv_message(context, auth_context, &fd, &data);
3785e9cd1aeSAssar Westerlund
379c19800e8SDoug Rabson if (ret) {
3805bda878eSJacques Vidrine krb5_warn (context, ret, "krb5_read_priv_message");
3815e9cd1aeSAssar Westerlund goto cleanup;
3825e9cd1aeSAssar Westerlund }
3835e9cd1aeSAssar Westerlund
3845e9cd1aeSAssar Westerlund sp = krb5_storage_from_data (&data);
3855e9cd1aeSAssar Westerlund if (sp == NULL)
3865e9cd1aeSAssar Westerlund krb5_errx (context, 1, "krb5_storage_from_data");
387c19800e8SDoug Rabson krb5_ret_int32 (sp, &opcode);
388c19800e8SDoug Rabson if (opcode == ONE_PRINC) {
389c19800e8SDoug Rabson krb5_data fake_data;
390c19800e8SDoug Rabson hdb_entry_ex entry;
3915e9cd1aeSAssar Westerlund
3925e9cd1aeSAssar Westerlund krb5_storage_free(sp);
3935e9cd1aeSAssar Westerlund
3945e9cd1aeSAssar Westerlund fake_data.data = (char *)data.data + 4;
3955e9cd1aeSAssar Westerlund fake_data.length = data.length - 4;
396c19800e8SDoug Rabson
397c19800e8SDoug Rabson memset(&entry, 0, sizeof(entry));
3985e9cd1aeSAssar Westerlund
3995e9cd1aeSAssar Westerlund ret = hdb_value2entry (context, &fake_data, &entry.entry);
4005e9cd1aeSAssar Westerlund if (ret)
4015e9cd1aeSAssar Westerlund krb5_err (context, 1, ret, "hdb_value2entry");
4025e9cd1aeSAssar Westerlund ret = mydb->hdb_store(server_context->context,
4035e9cd1aeSAssar Westerlund mydb,
4045e9cd1aeSAssar Westerlund 0, &entry);
4055e9cd1aeSAssar Westerlund if (ret)
4065e9cd1aeSAssar Westerlund krb5_err (context, 1, ret, "hdb_store");
4075e9cd1aeSAssar Westerlund
4085e9cd1aeSAssar Westerlund hdb_free_entry (context, &entry);
4095e9cd1aeSAssar Westerlund krb5_data_free (&data);
4105e9cd1aeSAssar Westerlund } else if (opcode == NOW_YOU_HAVE)
4115e9cd1aeSAssar Westerlund ;
4125e9cd1aeSAssar Westerlund else
413c19800e8SDoug Rabson krb5_errx (context, 1, "strange opcode %d", opcode);
4145bda878eSJacques Vidrine } while (opcode == ONE_PRINC);
4155bda878eSJacques Vidrine
4161c43270aSJacques Vidrine if (opcode != NOW_YOU_HAVE)
417c19800e8SDoug Rabson krb5_errx (context, 1, "receive_everything: strange %d", opcode);
4181c43270aSJacques Vidrine
4191c43270aSJacques Vidrine krb5_ret_int32 (sp, &vno);
4201c43270aSJacques Vidrine krb5_storage_free(sp);
421c19800e8SDoug Rabson
4225bda878eSJacques Vidrine ret = kadm5_log_reinit (server_context);
4235bda878eSJacques Vidrine if (ret)
424c19800e8SDoug Rabson krb5_err(context, 1, ret, "kadm5_log_reinit");
425c19800e8SDoug Rabson
4265e9cd1aeSAssar Westerlund ret = kadm5_log_set_version (server_context, vno - 1);
4275e9cd1aeSAssar Westerlund if (ret)
428c19800e8SDoug Rabson krb5_err (context, 1, ret, "kadm5_log_set_version");
4295e9cd1aeSAssar Westerlund
4305e9cd1aeSAssar Westerlund ret = kadm5_log_nop (server_context);
4315e9cd1aeSAssar Westerlund if (ret)
4325e9cd1aeSAssar Westerlund krb5_err (context, 1, ret, "kadm5_log_nop");
433c19800e8SDoug Rabson
434c19800e8SDoug Rabson ret = mydb->hdb_rename (context, mydb, server_context->db->hdb_name);
4355e9cd1aeSAssar Westerlund if (ret)
4365e9cd1aeSAssar Westerlund krb5_err (context, 1, ret, "db->rename");
437c19800e8SDoug Rabson
438b528cefcSMark Murray cleanup:
4395e9cd1aeSAssar Westerlund krb5_data_free (&data);
4405e9cd1aeSAssar Westerlund
441c19800e8SDoug Rabson ret = mydb->hdb_close (context, mydb);
442c19800e8SDoug Rabson if (ret)
443c19800e8SDoug Rabson krb5_err (context, 1, ret, "db->close");
444c19800e8SDoug Rabson
445c19800e8SDoug Rabson ret = mydb->hdb_destroy (context, mydb);
446c19800e8SDoug Rabson if (ret)
447c19800e8SDoug Rabson krb5_err (context, 1, ret, "db->destroy");
448c19800e8SDoug Rabson
449b528cefcSMark Murray krb5_warnx(context, "receive complete database, version %ld", (long)vno);
450b528cefcSMark Murray return ret;
451b528cefcSMark Murray }
4525e9cd1aeSAssar Westerlund
4535e9cd1aeSAssar Westerlund static char *config_file;
4545e9cd1aeSAssar Westerlund static char *realm;
455b528cefcSMark Murray static int version_flag;
456b528cefcSMark Murray static int help_flag;
457b528cefcSMark Murray static char *keytab_str;
458b528cefcSMark Murray static char *port_str;
459b528cefcSMark Murray #ifdef SUPPORT_DETACH
460b528cefcSMark Murray static int detach_from_console = 0;
461b528cefcSMark Murray #endif
462b528cefcSMark Murray
463b528cefcSMark Murray static struct getargs args[] = {
464b528cefcSMark Murray { "config-file", 'c', arg_string, &config_file, NULL, NULL },
465b528cefcSMark Murray { "realm", 'r', arg_string, &realm, NULL, NULL },
466b528cefcSMark Murray { "keytab", 'k', arg_string, &keytab_str,
467c19800e8SDoug Rabson "keytab to get authentication from", "kspec" },
468c19800e8SDoug Rabson { "time-lost", 0, arg_string, &server_time_lost,
469b528cefcSMark Murray "time before server is considered lost", "time" },
4705e9cd1aeSAssar Westerlund { "port", 0, arg_string, &port_str,
471b528cefcSMark Murray "port ipropd-slave will connect to", "port"},
472c19800e8SDoug Rabson #ifdef SUPPORT_DETACH
473b528cefcSMark Murray { "detach", 0, arg_flag, &detach_from_console,
474b528cefcSMark Murray "detach from console", NULL },
475c19800e8SDoug Rabson #endif
476b528cefcSMark Murray { "hostname", 0, arg_string, rk_UNCONST(&slave_str),
477b528cefcSMark Murray "hostname of slave (if not same as hostname)", "hostname" },
478b528cefcSMark Murray { "version", 0, arg_flag, &version_flag, NULL, NULL },
479b528cefcSMark Murray { "help", 0, arg_flag, &help_flag, NULL, NULL }
480b528cefcSMark Murray };
481c19800e8SDoug Rabson
482c19800e8SDoug Rabson static int num_args = sizeof(args) / sizeof(args[0]);
483c19800e8SDoug Rabson
484c19800e8SDoug Rabson static void
usage(int status)485c19800e8SDoug Rabson usage(int status)
486c19800e8SDoug Rabson {
487c19800e8SDoug Rabson arg_printusage(args, num_args, NULL, "master");
488c19800e8SDoug Rabson exit(status);
489c19800e8SDoug Rabson }
490c19800e8SDoug Rabson
491c19800e8SDoug Rabson int
main(int argc,char ** argv)492c19800e8SDoug Rabson main(int argc, char **argv)
493c19800e8SDoug Rabson {
494c19800e8SDoug Rabson krb5_error_code ret;
495c19800e8SDoug Rabson krb5_context context;
496c19800e8SDoug Rabson krb5_auth_context auth_context;
497c19800e8SDoug Rabson void *kadm_handle;
498c19800e8SDoug Rabson kadm5_server_context *server_context;
499c19800e8SDoug Rabson kadm5_config_params conf;
5005e9cd1aeSAssar Westerlund int master_fd;
5015e9cd1aeSAssar Westerlund krb5_ccache ccache;
502c19800e8SDoug Rabson krb5_principal server;
5035e9cd1aeSAssar Westerlund char **files;
5045e9cd1aeSAssar Westerlund int optidx = 0;
5055e9cd1aeSAssar Westerlund time_t reconnect_min;
506c19800e8SDoug Rabson time_t backoff;
507c19800e8SDoug Rabson time_t reconnect_max;
5084137ff4cSJacques Vidrine time_t reconnect;
5094137ff4cSJacques Vidrine time_t before = 0;
5105e9cd1aeSAssar Westerlund
5115e9cd1aeSAssar Westerlund const char *master;
5125e9cd1aeSAssar Westerlund
5135e9cd1aeSAssar Westerlund setprogname(argv[0]);
5145e9cd1aeSAssar Westerlund
5155e9cd1aeSAssar Westerlund if(getarg(args, num_args, argc, argv, &optidx))
516c19800e8SDoug Rabson usage(1);
517c19800e8SDoug Rabson
518c19800e8SDoug Rabson if(help_flag)
519c19800e8SDoug Rabson usage(0);
520b528cefcSMark Murray if(version_flag) {
521b528cefcSMark Murray print_version(NULL);
522b528cefcSMark Murray exit(0);
523b528cefcSMark Murray }
524b528cefcSMark Murray
525b528cefcSMark Murray ret = krb5_init_context(&context);
526b528cefcSMark Murray if (ret)
527b528cefcSMark Murray errx (1, "krb5_init_context failed: %d", ret);
528b528cefcSMark Murray
529b528cefcSMark Murray setup_signal();
530b528cefcSMark Murray
531b528cefcSMark Murray if (config_file == NULL) {
532b528cefcSMark Murray if (asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context)) == -1
533b528cefcSMark Murray || config_file == NULL)
534b528cefcSMark Murray errx(1, "out of memory");
535b528cefcSMark Murray }
536b528cefcSMark Murray
537b528cefcSMark Murray ret = krb5_prepend_config_files_default(config_file, &files);
538b528cefcSMark Murray if (ret)
539b528cefcSMark Murray krb5_err(context, 1, ret, "getting configuration files");
5405e9cd1aeSAssar Westerlund
541b528cefcSMark Murray ret = krb5_set_config_files(context, files);
542c19800e8SDoug Rabson krb5_free_config_files(files);
543b528cefcSMark Murray if (ret)
5445e9cd1aeSAssar Westerlund krb5_err(context, 1, ret, "reading configuration files");
545b528cefcSMark Murray
546b528cefcSMark Murray argc -= optidx;
547b528cefcSMark Murray argv += optidx;
548b528cefcSMark Murray
549b528cefcSMark Murray if (argc != 1)
550b528cefcSMark Murray usage(1);
551b528cefcSMark Murray
552b528cefcSMark Murray master = argv[0];
553b528cefcSMark Murray
554b528cefcSMark Murray #ifdef SUPPORT_DETACH
555b528cefcSMark Murray if (detach_from_console)
556b528cefcSMark Murray daemon(0, 0);
557c19800e8SDoug Rabson #endif
558c19800e8SDoug Rabson pidfile (NULL);
559c19800e8SDoug Rabson krb5_openlog (context, "ipropd-slave", &log_facility);
560b528cefcSMark Murray krb5_set_warn_dest(context, log_facility);
561b528cefcSMark Murray
562b528cefcSMark Murray ret = krb5_kt_register(context, &hdb_kt_ops);
563c19800e8SDoug Rabson if(ret)
5645e9cd1aeSAssar Westerlund krb5_err(context, 1, ret, "krb5_kt_register");
565b528cefcSMark Murray
566b528cefcSMark Murray time_before_lost = parse_time (server_time_lost, "s");
567c19800e8SDoug Rabson if (time_before_lost < 0)
568c19800e8SDoug Rabson krb5_errx (context, 1, "couldn't parse time: %s", server_time_lost);
569c19800e8SDoug Rabson
570c19800e8SDoug Rabson memset(&conf, 0, sizeof(conf));
571c19800e8SDoug Rabson if(realm) {
572c19800e8SDoug Rabson conf.mask |= KADM5_CONFIG_REALM;
573c19800e8SDoug Rabson conf.realm = realm;
574c19800e8SDoug Rabson }
575c19800e8SDoug Rabson ret = kadm5_init_with_password_ctx (context,
576c19800e8SDoug Rabson KADM5_ADMIN_SERVICE,
577c19800e8SDoug Rabson NULL,
578c19800e8SDoug Rabson KADM5_ADMIN_SERVICE,
579c19800e8SDoug Rabson &conf, 0, 0,
580c19800e8SDoug Rabson &kadm_handle);
581c19800e8SDoug Rabson if (ret)
582c19800e8SDoug Rabson krb5_err (context, 1, ret, "kadm5_init_with_password_ctx");
583c19800e8SDoug Rabson
584c19800e8SDoug Rabson server_context = (kadm5_server_context *)kadm_handle;
585c19800e8SDoug Rabson
586c19800e8SDoug Rabson ret = kadm5_log_init (server_context);
587c19800e8SDoug Rabson if (ret)
588c19800e8SDoug Rabson krb5_err (context, 1, ret, "kadm5_log_init");
589c19800e8SDoug Rabson
590b528cefcSMark Murray get_creds(context, keytab_str, &ccache, master);
5915e9cd1aeSAssar Westerlund
592b528cefcSMark Murray ret = krb5_sname_to_principal (context, master, IPROP_NAME,
593b528cefcSMark Murray KRB5_NT_SRV_HST, &server);
5945e9cd1aeSAssar Westerlund if (ret)
595b528cefcSMark Murray krb5_err (context, 1, ret, "krb5_sname_to_principal");
596b528cefcSMark Murray
597b528cefcSMark Murray auth_context = NULL;
598b528cefcSMark Murray master_fd = -1;
599b528cefcSMark Murray
600b528cefcSMark Murray krb5_appdefault_time(context, config_name, NULL, "reconnect-min",
601b528cefcSMark Murray 10, &reconnect_min);
602b528cefcSMark Murray krb5_appdefault_time(context, config_name, NULL, "reconnect-max",
603b528cefcSMark Murray 300, &reconnect_max);
6045e9cd1aeSAssar Westerlund krb5_appdefault_time(context, config_name, NULL, "reconnect-backoff",
6055e9cd1aeSAssar Westerlund 10, &backoff);
6065e9cd1aeSAssar Westerlund reconnect = reconnect_min;
6075e9cd1aeSAssar Westerlund
608c19800e8SDoug Rabson while (!exit_flag) {
609c19800e8SDoug Rabson time_t now, elapsed;
610c19800e8SDoug Rabson int connected = FALSE;
6115e9cd1aeSAssar Westerlund
612b528cefcSMark Murray now = time(NULL);
6135e9cd1aeSAssar Westerlund elapsed = now - before;
614c19800e8SDoug Rabson
615b528cefcSMark Murray if (elapsed < reconnect) {
616b528cefcSMark Murray time_t left = reconnect - elapsed;
617b528cefcSMark Murray krb5_warnx(context, "sleeping %d seconds before "
618b528cefcSMark Murray "retrying to connect", (int)left);
619b528cefcSMark Murray sleep(left);
620b528cefcSMark Murray }
621b528cefcSMark Murray before = now;
622b528cefcSMark Murray
623c19800e8SDoug Rabson master_fd = connect_to_master (context, master, port_str);
624c19800e8SDoug Rabson if (master_fd < 0)
625c19800e8SDoug Rabson goto retry;
626c19800e8SDoug Rabson
627c19800e8SDoug Rabson reconnect = reconnect_min;
628c19800e8SDoug Rabson
629c19800e8SDoug Rabson if (auth_context) {
630c19800e8SDoug Rabson krb5_auth_con_free(context, auth_context);
631b528cefcSMark Murray auth_context = NULL;
632b528cefcSMark Murray krb5_cc_destroy(context, ccache);
633 get_creds(context, keytab_str, &ccache, master);
634 }
635 ret = krb5_sendauth (context, &auth_context, &master_fd,
636 IPROP_VERSION, NULL, server,
637 AP_OPTS_MUTUAL_REQUIRED, NULL, NULL,
638 ccache, NULL, NULL, NULL);
639 if (ret) {
640 krb5_warn (context, ret, "krb5_sendauth");
641 goto retry;
642 }
643
644 krb5_warnx(context, "ipropd-slave started at version: %ld",
645 (long)server_context->log_context.version);
646
647 ret = ihave (context, auth_context, master_fd,
648 server_context->log_context.version);
649 if (ret)
650 goto retry;
651
652 connected = TRUE;
653
654 while (connected && !exit_flag) {
655 krb5_data out;
656 krb5_storage *sp;
657 int32_t tmp;
658 fd_set readset;
659 struct timeval to;
660
661 #ifndef NO_LIMIT_FD_SETSIZE
662 if (master_fd >= FD_SETSIZE)
663 krb5_errx (context, 1, "fd too large");
664 #endif
665
666 FD_ZERO(&readset);
667 FD_SET(master_fd, &readset);
668
669 to.tv_sec = time_before_lost;
670 to.tv_usec = 0;
671
672 ret = select (master_fd + 1,
673 &readset, NULL, NULL, &to);
674 if (ret < 0) {
675 if (errno == EINTR)
676 continue;
677 else
678 krb5_err (context, 1, errno, "select");
679 }
680 if (ret == 0)
681 krb5_errx (context, 1, "server didn't send a message "
682 "in %d seconds", time_before_lost);
683
684 ret = krb5_read_priv_message(context, auth_context, &master_fd, &out);
685 if (ret) {
686 krb5_warn (context, ret, "krb5_read_priv_message");
687 connected = FALSE;
688 continue;
689 }
690
691 sp = krb5_storage_from_mem (out.data, out.length);
692 krb5_ret_int32 (sp, &tmp);
693 switch (tmp) {
694 case FOR_YOU :
695 receive (context, sp, server_context);
696 ret = ihave (context, auth_context, master_fd,
697 server_context->log_context.version);
698 if (ret)
699 connected = FALSE;
700 break;
701 case TELL_YOU_EVERYTHING :
702 ret = receive_everything (context, master_fd, server_context,
703 auth_context);
704 if (ret)
705 connected = FALSE;
706 break;
707 case ARE_YOU_THERE :
708 send_im_here (context, master_fd, auth_context);
709 break;
710 case NOW_YOU_HAVE :
711 case I_HAVE :
712 case ONE_PRINC :
713 case I_AM_HERE :
714 default :
715 krb5_warnx (context, "Ignoring command %d", tmp);
716 break;
717 }
718 krb5_storage_free (sp);
719 krb5_data_free (&out);
720
721 }
722 retry:
723 if (connected == FALSE)
724 krb5_warnx (context, "disconnected for server");
725 if (exit_flag)
726 krb5_warnx (context, "got an exit signal");
727
728 if (master_fd >= 0)
729 close(master_fd);
730
731 reconnect += backoff;
732 if (reconnect > reconnect_max)
733 reconnect = reconnect_max;
734 }
735
736 if (0);
737 #ifndef NO_SIGXCPU
738 else if(exit_flag == SIGXCPU)
739 krb5_warnx(context, "%s CPU time limit exceeded", getprogname());
740 #endif
741 else if(exit_flag == SIGINT || exit_flag == SIGTERM)
742 krb5_warnx(context, "%s terminated", getprogname());
743 else
744 krb5_warnx(context, "%s unexpected exit reason: %ld",
745 getprogname(), (long)exit_flag);
746
747 return 0;
748 }
749