1 /* remote.c
2
3 The dhcpctl remote object. */
4
5 /*
6 * Copyright (c) 2004-2017 by Internet Systems Consortium, Inc. ("ISC")
7 * Copyright (c) 1999-2003 by Internet Software Consortium
8 *
9 * This Source Code Form is subject to the terms of the Mozilla Public
10 * License, v. 2.0. If a copy of the MPL was not distributed with this
11 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
19 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 *
21 * Internet Systems Consortium, Inc.
22 * 950 Charter Street
23 * Redwood City, CA 94063
24 * <info@isc.org>
25 * https://www.isc.org/
26 *
27 */
28
29 #include "dhcpd.h"
30 #include <omapip/omapip_p.h>
31 #include "dhcpctl.h"
32
33 /* dhcpctl_new_authenticator
34
35 synchronous - creates an authenticator object.
36 returns nonzero status code if the object couldn't be created
37 stores handle to authenticator through h if successful, and returns zero.
38 name is the authenticator name (NUL-terminated string).
39 algorithm is the NUL-terminated string name of the algorithm to use
40 (currently, only "hmac-md5" is supported).
41 secret and secret_len is the key secret. */
42
dhcpctl_new_authenticator(dhcpctl_handle * h,const char * name,const char * algorithm,const unsigned char * secret,unsigned secret_len)43 dhcpctl_status dhcpctl_new_authenticator (dhcpctl_handle *h,
44 const char *name,
45 const char *algorithm,
46 const unsigned char *secret,
47 unsigned secret_len)
48 {
49 struct auth_key *key = (struct auth_key *)0;
50 isc_result_t status;
51
52 status = omapi_auth_key_new (&key, MDL);
53 if (status != ISC_R_SUCCESS)
54 return status;
55
56 key -> name = dmalloc (strlen (name) + 1, MDL);
57 if (!key -> name) {
58 omapi_auth_key_dereference (&key, MDL);
59 return ISC_R_NOMEMORY;
60 }
61 strcpy (key -> name, name);
62
63 /* If the algorithm name isn't an FQDN, tack on the
64 .SIG-ALG.REG.NET. domain. */
65 if (strchr (algorithm, '.') == 0) {
66 static char add[] = ".SIG-ALG.REG.INT.";
67 key -> algorithm = dmalloc (strlen (algorithm) +
68 sizeof (add), MDL);
69 if (!key -> algorithm) {
70 omapi_auth_key_dereference (&key, MDL);
71 return ISC_R_NOMEMORY;
72 }
73 strcpy (key -> algorithm, algorithm);
74 strcat (key -> algorithm, add);
75 } else {
76 key -> algorithm = dmalloc (strlen (algorithm) + 1, MDL);
77 if (!key -> algorithm) {
78 omapi_auth_key_dereference (&key, MDL);
79 return ISC_R_NOMEMORY;
80 }
81 strcpy (key -> algorithm, algorithm);
82 }
83
84 status = omapi_data_string_new (&key -> key, secret_len, MDL);
85 if (status != ISC_R_SUCCESS) {
86 omapi_auth_key_dereference (&key, MDL);
87 return status;
88 }
89 memcpy (key -> key -> value, secret, secret_len);
90 key -> key -> len = secret_len;
91
92 *h = (dhcpctl_handle) key;
93 return ISC_R_SUCCESS;
94 }
95
96
97 /* dhcpctl_new_object
98
99 synchronous - creates a local handle for a host entry.
100 returns nonzero status code if the local host entry couldn't
101 be created
102 stores handle to host through h if successful, and returns zero.
103 object_type is a pointer to a NUL-terminated string containing
104 the ascii name of the type of object being accessed - e.g., "host" */
105
dhcpctl_new_object(dhcpctl_handle * h,dhcpctl_handle connection,const char * object_type)106 dhcpctl_status dhcpctl_new_object (dhcpctl_handle *h,
107 dhcpctl_handle connection,
108 const char *object_type)
109 {
110 dhcpctl_remote_object_t *m;
111 omapi_object_t *g;
112 isc_result_t status;
113
114 m = (dhcpctl_remote_object_t *)0;
115 status = omapi_object_allocate((omapi_object_t **)&m,
116 dhcpctl_remote_type, 0, MDL);
117 if (status != ISC_R_SUCCESS)
118 return status;
119
120 g = (omapi_object_t *)0;
121 status = omapi_generic_new (&g, MDL);
122 if (status != ISC_R_SUCCESS) {
123 dfree (m, MDL);
124 return status;
125 }
126 status = omapi_object_reference (&m -> inner, g, MDL);
127 if (status != ISC_R_SUCCESS) {
128 omapi_object_dereference ((omapi_object_t **)&m, MDL);
129 omapi_object_dereference (&g, MDL);
130 return status;
131 }
132 status = omapi_object_reference (&g -> outer,
133 (omapi_object_t *)m, MDL);
134
135 if (status != ISC_R_SUCCESS) {
136 omapi_object_dereference ((omapi_object_t **)&m, MDL);
137 omapi_object_dereference (&g, MDL);
138 return status;
139 }
140
141 status = omapi_typed_data_new (MDL, &m -> rtype,
142 omapi_datatype_string,
143 object_type);
144 if (status != ISC_R_SUCCESS) {
145 omapi_object_dereference ((omapi_object_t **)&m, MDL);
146 omapi_object_dereference (&g, MDL);
147 return status;
148 }
149
150 status = omapi_object_reference (h, (omapi_object_t *)m, MDL);
151 omapi_object_dereference ((omapi_object_t **)&m, MDL);
152 omapi_object_dereference (&g, MDL);
153 if (status != ISC_R_SUCCESS)
154 return status;
155
156 return status;
157 }
158
159 /* asynchronous - just queues the request
160 returns nonzero status code if open couldn't be queued
161 returns zero if open was queued
162 h is a handle to an object created by dhcpctl_new_object
163 connection is a connection to a DHCP server
164 flags include:
165 DHCPCTL_CREATE - if the object doesn't exist, create it
166 DHCPCTL_UPDATE - update the object on the server using the
167 attached parameters
168 DHCPCTL_EXCL - error if the object exists and DHCPCTL_CREATE
169 was also specified */
170
dhcpctl_open_object(dhcpctl_handle h,dhcpctl_handle connection,int flags)171 dhcpctl_status dhcpctl_open_object (dhcpctl_handle h,
172 dhcpctl_handle connection,
173 int flags)
174 {
175 isc_result_t status;
176 omapi_object_t *message = (omapi_object_t *)0;
177 dhcpctl_remote_object_t *remote;
178
179 if (h -> type != dhcpctl_remote_type)
180 return DHCP_R_INVALIDARG;
181 remote = (dhcpctl_remote_object_t *)h;
182
183 status = omapi_message_new (&message, MDL);
184 if (status != ISC_R_SUCCESS)
185 return status;
186 status = omapi_set_int_value (message, (omapi_object_t *)0,
187 "op", OMAPI_OP_OPEN);
188 if (status != ISC_R_SUCCESS) {
189 omapi_object_dereference (&message, MDL);
190 return status;
191 }
192 status = omapi_set_object_value (message, (omapi_object_t *)0,
193 "object", h);
194 if (status != ISC_R_SUCCESS) {
195 omapi_object_dereference (&message, MDL);
196 return status;
197 }
198 if (flags & DHCPCTL_CREATE) {
199 status = omapi_set_boolean_value (message, (omapi_object_t *)0,
200 "create", 1);
201 if (status != ISC_R_SUCCESS) {
202 omapi_object_dereference (&message, MDL);
203 return status;
204 }
205 }
206 if (flags & DHCPCTL_UPDATE) {
207 status = omapi_set_boolean_value (message, (omapi_object_t *)0,
208 "update", 1);
209 if (status != ISC_R_SUCCESS) {
210 omapi_object_dereference (&message, MDL);
211 return status;
212 }
213 }
214 if (flags & DHCPCTL_EXCL) {
215 status = omapi_set_boolean_value (message, (omapi_object_t *)0,
216 "exclusive", 1);
217 if (status != ISC_R_SUCCESS) {
218 omapi_object_dereference (&message, MDL);
219 return status;
220 }
221 }
222
223 if (remote -> rtype) {
224 status = omapi_set_value_str (message, (omapi_object_t *)0,
225 "type", remote -> rtype);
226 if (status != ISC_R_SUCCESS) {
227 omapi_object_dereference (&message, MDL);
228 return status;
229 }
230 }
231
232 status = omapi_message_register (message);
233 if (status != ISC_R_SUCCESS) {
234 omapi_object_dereference (&message, MDL);
235 return status;
236 }
237
238 status = omapi_protocol_send_message (connection -> outer,
239 (omapi_object_t *)0,
240 message, (omapi_object_t *)0);
241
242 if (status != ISC_R_SUCCESS)
243 omapi_message_unregister (message);
244
245 omapi_object_dereference (&message, MDL);
246 return status;
247 }
248
249 /* Callback methods (not meant to be called directly) */
250
dhcpctl_remote_set_value(omapi_object_t * h,omapi_object_t * id,omapi_data_string_t * name,omapi_typed_data_t * value)251 isc_result_t dhcpctl_remote_set_value (omapi_object_t *h,
252 omapi_object_t *id,
253 omapi_data_string_t *name,
254 omapi_typed_data_t *value)
255 {
256 dhcpctl_remote_object_t *ro;
257 unsigned long rh;
258 isc_result_t status;
259
260 if (h -> type != dhcpctl_remote_type)
261 return DHCP_R_INVALIDARG;
262 ro = (dhcpctl_remote_object_t *)h;
263
264 if (!omapi_ds_strcmp (name, "remote-handle")) {
265 status = omapi_get_int_value (&rh, value);
266 if (status == ISC_R_SUCCESS)
267 ro -> remote_handle = rh;
268 return status;
269 }
270
271 if (h -> inner && h -> inner -> type -> set_value)
272 return (*(h -> inner -> type -> set_value))
273 (h -> inner, id, name, value);
274 return ISC_R_NOTFOUND;
275 }
276
dhcpctl_remote_get_value(omapi_object_t * h,omapi_object_t * id,omapi_data_string_t * name,omapi_value_t ** value)277 isc_result_t dhcpctl_remote_get_value (omapi_object_t *h,
278 omapi_object_t *id,
279 omapi_data_string_t *name,
280 omapi_value_t **value)
281 {
282 if (h -> type != dhcpctl_remote_type)
283 return DHCP_R_INVALIDARG;
284
285 if (h -> inner && h -> inner -> type -> get_value)
286 return (*(h -> inner -> type -> get_value))
287 (h -> inner, id, name, value);
288 return ISC_R_NOTFOUND;
289 }
290
dhcpctl_remote_signal_handler(omapi_object_t * o,const char * name,va_list ap)291 isc_result_t dhcpctl_remote_signal_handler (omapi_object_t *o,
292 const char *name, va_list ap)
293 {
294 dhcpctl_remote_object_t *p;
295 omapi_typed_data_t *tv;
296
297 if (o -> type != dhcpctl_remote_type)
298 return DHCP_R_INVALIDARG;
299 p = (dhcpctl_remote_object_t *)o;
300
301 if (!strcmp (name, "updated")) {
302 p -> waitstatus = ISC_R_SUCCESS;
303 if (o -> inner -> type == omapi_type_generic)
304 omapi_generic_clear_flags (o -> inner);
305 return omapi_signal_in (o -> inner, "ready");
306 }
307 if (!strcmp (name, "status")) {
308 p -> waitstatus = va_arg (ap, isc_result_t);
309 if (p -> message)
310 omapi_typed_data_dereference (&p -> message, MDL);
311 tv = va_arg (ap, omapi_typed_data_t *);
312 if (tv)
313 omapi_typed_data_reference (&p -> message, tv, MDL);
314 return omapi_signal_in (o -> inner, "ready");
315 }
316
317 if (p -> inner && p -> inner -> type -> signal_handler)
318 return (*(p -> inner -> type -> signal_handler))
319 (p -> inner, name, ap);
320
321 return ISC_R_SUCCESS;
322 }
323
dhcpctl_remote_destroy(omapi_object_t * h,const char * file,int line)324 isc_result_t dhcpctl_remote_destroy (omapi_object_t *h,
325 const char *file, int line)
326 {
327 dhcpctl_remote_object_t *p;
328 if (h -> type != dhcpctl_remote_type)
329 return DHCP_R_INVALIDARG;
330 p = (dhcpctl_remote_object_t *)h;
331 if (p -> handle)
332 omapi_object_dereference ((omapi_object_t **)&p -> handle,
333 file, line);
334 if (p -> rtype)
335 omapi_typed_data_dereference ((omapi_typed_data_t **)&p->rtype,
336 file, line);
337 return ISC_R_SUCCESS;
338 }
339
340 /* Write all the published values associated with the object through the
341 specified connection. */
342
dhcpctl_remote_stuff_values(omapi_object_t * c,omapi_object_t * id,omapi_object_t * p)343 isc_result_t dhcpctl_remote_stuff_values (omapi_object_t *c,
344 omapi_object_t *id,
345 omapi_object_t *p)
346 {
347 if (p -> type != dhcpctl_remote_type)
348 return DHCP_R_INVALIDARG;
349
350 if (p -> inner && p -> inner -> type -> stuff_values)
351 return (*(p -> inner -> type -> stuff_values)) (c, id,
352 p -> inner);
353 return ISC_R_SUCCESS;
354 }
355
356