summaryrefslogtreecommitdiff
path: root/dhcpctl/remote.c
blob: 48a6e5f682b54c360e4499d12e241ad0b27a905a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
/* remote.c

   The dhcpctl remote object. */

/*
 * Copyright (c) 2004,2007 by Internet Systems Consortium, Inc. ("ISC")
 * Copyright (c) 1999-2003 by Internet Software Consortium
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 *   Internet Systems Consortium, Inc.
 *   950 Charter Street
 *   Redwood City, CA 94063
 *   <info@isc.org>
 *   https://www.isc.org/
 *
 * This software has been written for Internet Systems Consortium
 * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
 * To learn more about Internet Systems Consortium, see
 * ``https://www.isc.org/''.  To learn more about Vixie Enterprises,
 * see ``http://www.vix.com''.   To learn more about Nominum, Inc., see
 * ``http://www.nominum.com''.
 */

#include "dhcpd.h"
#include <omapip/omapip_p.h>
#include "dhcpctl.h"

/* dhcpctl_new_authenticator

   synchronous - creates an authenticator object.
   returns nonzero status code if the object couldn't be created
   stores handle to authenticator through h if successful, and returns zero.
   name is the authenticator name (NUL-terminated string).
   algorithm is the NUL-terminated string name of the algorithm to use
   (currently, only "hmac-md5" is supported).
   secret and secret_len is the key secret. */

dhcpctl_status dhcpctl_new_authenticator (dhcpctl_handle *h,
					  const char *name,
					  const char *algorithm,
					  const unsigned char *secret,
					  unsigned secret_len)
{
	struct auth_key *key = (struct auth_key *)0;
	isc_result_t status;

	status = omapi_auth_key_new (&key, MDL);
	if (status != ISC_R_SUCCESS)
		return status;

	key -> name = dmalloc (strlen (name) + 1, MDL);
	if (!key -> name) {
		omapi_auth_key_dereference (&key, MDL);
		return ISC_R_NOMEMORY;
	}
	strcpy (key -> name, name);

	/* If the algorithm name isn't an FQDN, tack on the
	   .SIG-ALG.REG.NET. domain. */
	if (strchr (algorithm, '.') == 0) {
		static char add[] = ".SIG-ALG.REG.INT.";
		key -> algorithm = dmalloc (strlen (algorithm) +
		                            sizeof (add), MDL);
		if (!key -> algorithm) {
			omapi_auth_key_dereference (&key, MDL);
			return ISC_R_NOMEMORY;
		}
		strcpy (key -> algorithm, algorithm);
		strcat (key -> algorithm, add);
	} else {
		key -> algorithm = dmalloc (strlen (algorithm) + 1, MDL);
		if (!key -> algorithm) {
			omapi_auth_key_dereference (&key, MDL);
			return ISC_R_NOMEMORY;
		}
		strcpy (key -> algorithm, algorithm);
	}

	status = omapi_data_string_new (&key -> key, secret_len, MDL);
	if (status != ISC_R_SUCCESS) {
		omapi_auth_key_dereference (&key, MDL);
		return status;
	}
	memcpy (key -> key -> value, secret, secret_len);
	key -> key -> len = secret_len;

	*h = (dhcpctl_handle) key;
	return ISC_R_SUCCESS;
}


/* dhcpctl_new_object

   synchronous - creates a local handle for a host entry.
   returns nonzero status code if the local host entry couldn't
   be created
   stores handle to host through h if successful, and returns zero.
   object_type is a pointer to a NUL-terminated string containing
   the ascii name of the type of object being accessed - e.g., "host" */

dhcpctl_status dhcpctl_new_object (dhcpctl_handle *h,
				   dhcpctl_handle connection,
				   const char *object_type)
{
	dhcpctl_remote_object_t *m;
	omapi_object_t *g;
	isc_result_t status;

	m = (dhcpctl_remote_object_t *)0;
	status = omapi_object_allocate((omapi_object_t **)&m,
				       dhcpctl_remote_type, 0, MDL);
	if (status != ISC_R_SUCCESS)
		return status;

	g = (omapi_object_t *)0;
	status = omapi_generic_new (&g, MDL);
	if (status != ISC_R_SUCCESS) {
		dfree (m, MDL);
		return status;
	}
	status = omapi_object_reference (&m -> inner, g, MDL);
	if (status != ISC_R_SUCCESS) {
		omapi_object_dereference ((omapi_object_t **)&m, MDL);
		omapi_object_dereference (&g, MDL);
		return status;
	}
	status = omapi_object_reference (&g -> outer,
					 (omapi_object_t *)m, MDL);

	if (status != ISC_R_SUCCESS) {
		omapi_object_dereference ((omapi_object_t **)&m, MDL);
		omapi_object_dereference (&g, MDL);
		return status;
	}

	status = omapi_typed_data_new (MDL, &m -> rtype,
				       omapi_datatype_string,
				       object_type);
	if (status != ISC_R_SUCCESS) {
		omapi_object_dereference ((omapi_object_t **)&m, MDL);
		omapi_object_dereference (&g, MDL);
		return status;
	}

	status = omapi_object_reference (h, (omapi_object_t *)m, MDL);
	omapi_object_dereference ((omapi_object_t **)&m, MDL);
	omapi_object_dereference (&g, MDL);
	if (status != ISC_R_SUCCESS)
		return status;

	return status;
}

/* asynchronous - just queues the request
   returns nonzero status code if open couldn't be queued
   returns zero if open was queued
   h is a handle to an object created by dhcpctl_new_object
   connection is a connection to a DHCP server
   flags include:
     DHCPCTL_CREATE - if the object doesn't exist, create it
     DHCPCTL_UPDATE - update the object on the server using the
     		      attached parameters 
     DHCPCTL_EXCL - error if the object exists and DHCPCTL_CREATE
     		      was also specified */

dhcpctl_status dhcpctl_open_object (dhcpctl_handle h,
				    dhcpctl_handle connection,
				    int flags)
{
	isc_result_t status;
	omapi_object_t *message = (omapi_object_t *)0;
	dhcpctl_remote_object_t *remote;

	if (h -> type != dhcpctl_remote_type)
		return ISC_R_INVALIDARG;
	remote = (dhcpctl_remote_object_t *)h;

	status = omapi_message_new (&message, MDL);
	if (status != ISC_R_SUCCESS)
		return status;
	status = omapi_set_int_value (message, (omapi_object_t *)0,
				      "op", OMAPI_OP_OPEN);
	if (status != ISC_R_SUCCESS) {
		omapi_object_dereference (&message, MDL);
		return status;
	}
	status = omapi_set_object_value (message, (omapi_object_t *)0,
					 "object", h);
	if (status != ISC_R_SUCCESS) {
		omapi_object_dereference (&message, MDL);
		return status;
	}
	if (flags & DHCPCTL_CREATE) {
		status = omapi_set_boolean_value (message, (omapi_object_t *)0,
						  "create", 1);
		if (status != ISC_R_SUCCESS) {
			omapi_object_dereference (&message, MDL);
			return status;
		}
	}
	if (flags & DHCPCTL_UPDATE) {
		status = omapi_set_boolean_value (message, (omapi_object_t *)0,
						  "update", 1);
		if (status != ISC_R_SUCCESS) {
			omapi_object_dereference (&message, MDL);
			return status;
		}
	}
	if (flags & DHCPCTL_EXCL) {
		status = omapi_set_boolean_value (message, (omapi_object_t *)0,
						  "exclusive", 1);
		if (status != ISC_R_SUCCESS) {
			omapi_object_dereference (&message, MDL);
			return status;
		}
	}

	if (remote -> rtype) {
		status = omapi_set_value_str (message, (omapi_object_t *)0,
					      "type", remote -> rtype);
		if (status != ISC_R_SUCCESS) {
			omapi_object_dereference (&message, MDL);
			return status;
		}
	}

	status = omapi_message_register (message);
	if (status != ISC_R_SUCCESS) {
		omapi_object_dereference (&message, MDL);
		return status;
	}

	status = omapi_protocol_send_message (connection -> outer,
					    (omapi_object_t *)0,
					    message, (omapi_object_t *)0);

	if (status != ISC_R_SUCCESS)
		omapi_message_unregister (message);

	omapi_object_dereference (&message, MDL);
	return status;
}

/* Callback methods (not meant to be called directly) */

isc_result_t dhcpctl_remote_set_value (omapi_object_t *h,
				       omapi_object_t *id,
				       omapi_data_string_t *name,
				       omapi_typed_data_t *value)
{
	dhcpctl_remote_object_t *ro;
	unsigned long rh;
	isc_result_t status;

	if (h -> type != dhcpctl_remote_type)
		return ISC_R_INVALIDARG;
	ro = (dhcpctl_remote_object_t *)h;

	if (!omapi_ds_strcmp (name, "remote-handle")) {
		status = omapi_get_int_value (&rh, value);
		if (status == ISC_R_SUCCESS)
			ro -> remote_handle = rh;
		return status;
	}

	if (h -> inner && h -> inner -> type -> set_value)
		return (*(h -> inner -> type -> set_value))
			(h -> inner, id, name, value);
	return ISC_R_NOTFOUND;
}

isc_result_t dhcpctl_remote_get_value (omapi_object_t *h,
				       omapi_object_t *id,
				       omapi_data_string_t *name,
				       omapi_value_t **value)
{
	if (h -> type != dhcpctl_remote_type)
		return ISC_R_INVALIDARG;
	
	if (h -> inner && h -> inner -> type -> get_value)
		return (*(h -> inner -> type -> get_value))
			(h -> inner, id, name, value);
	return ISC_R_NOTFOUND;
}

isc_result_t dhcpctl_remote_signal_handler (omapi_object_t *o,
					    const char *name, va_list ap)
{
	dhcpctl_remote_object_t *p;
	omapi_typed_data_t *tv;

	if (o -> type != dhcpctl_remote_type)
		return ISC_R_INVALIDARG;
	p = (dhcpctl_remote_object_t *)o;

	if (!strcmp (name, "updated")) {
		p -> waitstatus = ISC_R_SUCCESS;
		if (o -> inner -> type == omapi_type_generic)
			omapi_generic_clear_flags (o -> inner);
		return omapi_signal_in (o -> inner, "ready");
	}
	if (!strcmp (name, "status")) {
		p -> waitstatus = va_arg (ap, isc_result_t);
		if (p -> message)
			omapi_typed_data_dereference (&p -> message, MDL);
		tv = va_arg (ap, omapi_typed_data_t *);
		if (tv)
			omapi_typed_data_reference (&p -> message, tv, MDL);
		return omapi_signal_in (o -> inner, "ready");
	}

	if (p -> inner && p -> inner -> type -> signal_handler)
		return (*(p -> inner -> type -> signal_handler))
			(p -> inner, name, ap);

	return ISC_R_SUCCESS;
}

isc_result_t dhcpctl_remote_destroy (omapi_object_t *h,
				     const char *file, int line)
{
	dhcpctl_remote_object_t *p;
	if (h -> type != dhcpctl_remote_type)
		return ISC_R_INVALIDARG;
	p = (dhcpctl_remote_object_t *)h;
	if (p -> handle)
		omapi_object_dereference ((omapi_object_t **)&p -> handle,
					  file, line);
	if (p -> rtype)
		omapi_typed_data_dereference ((omapi_typed_data_t **)&p->rtype,
					      file, line);
	return ISC_R_SUCCESS;
}

/* Write all the published values associated with the object through the
   specified connection. */

isc_result_t dhcpctl_remote_stuff_values (omapi_object_t *c,
					  omapi_object_t *id,
					  omapi_object_t *p)
{
	if (p -> type != dhcpctl_remote_type)
		return ISC_R_INVALIDARG;

	if (p -> inner && p -> inner -> type -> stuff_values)
		return (*(p -> inner -> type -> stuff_values)) (c, id,
								p -> inner);
	return ISC_R_SUCCESS;
}