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 "kadm5_locl.h"
35
36RCSID("$Id$");
37
38static kadm5_ret_t
39kadm5_s_lock(void *server_handle)
40{
41    kadm5_server_context *context = server_handle;
42    kadm5_ret_t ret;
43
44    if (context->keep_open) {
45	/*
46	 * We open/close around every operation, but we retain the DB
47	 * open if the DB was locked with a prior call to kadm5_lock(),
48	 * so if it's open here that must be because the DB is locked.
49	 */
50	heim_assert(context->db->lock_count > 0,
51		    "Internal error in tracking HDB locks");
52	return KADM5_ALREADY_LOCKED;
53    }
54
55    ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
56    if (ret)
57	return ret;
58
59    ret = context->db->hdb_lock(context->context, context->db, HDB_WLOCK);
60    if (ret)
61	return ret;
62
63    context->keep_open = 1;
64    return 0;
65}
66
67static kadm5_ret_t
68kadm5_s_unlock(void *server_handle)
69{
70    kadm5_server_context *context = server_handle;
71    kadm5_ret_t ret;
72
73    if (!context->keep_open)
74	return KADM5_NOT_LOCKED;
75
76    (void) context->db->hdb_close(context->context, context->db);
77
78    context->keep_open = 0;
79    ret = context->db->hdb_unlock(context->context, context->db);
80    if (ret)
81	return ret;
82    return 0;
83}
84
85static void
86set_funcs(kadm5_server_context *c)
87{
88#define SET(C, F) (C)->funcs.F = kadm5_s_ ## F
89    SET(c, chpass_principal);
90    SET(c, chpass_principal_with_key);
91    SET(c, create_principal);
92    SET(c, delete_principal);
93    SET(c, destroy);
94    SET(c, flush);
95    SET(c, get_principal);
96    SET(c, get_principals);
97    SET(c, get_privs);
98    SET(c, modify_principal);
99    SET(c, randkey_principal);
100    SET(c, rename_principal);
101    SET(c, lock);
102    SET(c, unlock);
103}
104
105#ifndef NO_UNIX_SOCKETS
106
107static void
108set_socket_name(krb5_context context, struct sockaddr_un *un)
109{
110    const char *fn = kadm5_log_signal_socket(context);
111
112    memset(un, 0, sizeof(*un));
113    un->sun_family = AF_UNIX;
114    strlcpy (un->sun_path, fn, sizeof(un->sun_path));
115
116}
117#else
118
119static void
120set_socket_info(krb5_context context, struct addrinfo **info)
121{
122    kadm5_log_signal_socket_info(context, 0, info);
123}
124
125#endif
126
127static kadm5_ret_t
128find_db_spec(kadm5_server_context *ctx)
129{
130    krb5_context context = ctx->context;
131    struct hdb_dbinfo *info, *d;
132    krb5_error_code ret;
133
134    if (ctx->config.realm) {
135	/* fetch the databases */
136	ret = hdb_get_dbinfo(context, &info);
137	if (ret)
138	    return ret;
139
140	d = NULL;
141	while ((d = hdb_dbinfo_get_next(info, d)) != NULL) {
142	    const char *p = hdb_dbinfo_get_realm(context, d);
143
144	    /* match default (realm-less) */
145	    if(p != NULL && strcmp(ctx->config.realm, p) != 0)
146		continue;
147
148	    p = hdb_dbinfo_get_dbname(context, d);
149	    if (p)
150		ctx->config.dbname = strdup(p);
151
152	    p = hdb_dbinfo_get_acl_file(context, d);
153	    if (p)
154		ctx->config.acl_file = strdup(p);
155
156	    p = hdb_dbinfo_get_mkey_file(context, d);
157	    if (p)
158		ctx->config.stash_file = strdup(p);
159
160	    p = hdb_dbinfo_get_log_file(context, d);
161	    if (p)
162		ctx->log_context.log_file = strdup(p);
163	    break;
164	}
165	hdb_free_dbinfo(context, &info);
166    }
167
168    /* If any of the values was unset, pick up the default value */
169
170    if (ctx->config.dbname == NULL)
171	ctx->config.dbname = strdup(hdb_default_db(context));
172    if (ctx->config.acl_file == NULL)
173	asprintf(&ctx->config.acl_file, "%s/kadmind.acl", hdb_db_dir(context));
174    if (ctx->config.stash_file == NULL)
175	asprintf(&ctx->config.stash_file, "%s/m-key", hdb_db_dir(context));
176    if (ctx->log_context.log_file == NULL)
177	asprintf(&ctx->log_context.log_file, "%s/log", hdb_db_dir(context));
178
179#ifndef NO_UNIX_SOCKETS
180    set_socket_name(context, &ctx->log_context.socket_name);
181#else
182    set_socket_info(context, &ctx->log_context.socket_info);
183#endif
184
185    return 0;
186}
187
188kadm5_ret_t
189_kadm5_s_init_context(kadm5_server_context **ctx,
190		      kadm5_config_params *params,
191		      krb5_context context)
192{
193    *ctx = malloc(sizeof(**ctx));
194    if(*ctx == NULL)
195	return ENOMEM;
196    memset(*ctx, 0, sizeof(**ctx));
197    set_funcs(*ctx);
198    (*ctx)->context = context;
199    krb5_add_et_list (context, initialize_kadm5_error_table_r);
200#define is_set(M) (params && params->mask & KADM5_CONFIG_ ## M)
201    if(is_set(REALM))
202	(*ctx)->config.realm = strdup(params->realm);
203    else
204	krb5_get_default_realm(context, &(*ctx)->config.realm);
205    if(is_set(DBNAME))
206	(*ctx)->config.dbname = strdup(params->dbname);
207    if(is_set(ACL_FILE))
208	(*ctx)->config.acl_file = strdup(params->acl_file);
209    if(is_set(STASH_FILE))
210	(*ctx)->config.stash_file = strdup(params->stash_file);
211
212    find_db_spec(*ctx);
213
214    /* PROFILE can't be specified for now */
215    /* KADMIND_PORT is supposed to be used on the server also,
216       but this doesn't make sense */
217    /* ADMIN_SERVER is client only */
218    /* ADNAME is not used at all (as far as I can tell) */
219    /* ADB_LOCKFILE ditto */
220    /* DICT_FILE */
221    /* ADMIN_KEYTAB */
222    /* MKEY_FROM_KEYBOARD is not supported */
223    /* MKEY_NAME neither */
224    /* ENCTYPE */
225    /* MAX_LIFE */
226    /* MAX_RLIFE */
227    /* EXPIRATION */
228    /* FLAGS */
229    /* ENCTYPES */
230
231    return 0;
232}
233
234HDB *
235_kadm5_s_get_db(void *server_handle)
236{
237    kadm5_server_context *context = server_handle;
238    return context->db;
239}
240