aboutsummaryrefslogtreecommitdiffstats
path: root/wpa_supplicant/dbus/dbus_new_handlers_wps.c
blob: 8489ce77c56a2eafa5e35b1260704c88bb226c1e (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
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
/*
 * WPA Supplicant / dbus-based control interface (WPS)
 * Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
 * Copyright (c) 2009, Witold Sowa <witold.sowa@gmail.com>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "../config.h"
#include "../wpa_supplicant_i.h"
#include "../wps_supplicant.h"
#include "../driver_i.h"
#include "../ap.h"
#include "dbus_new_helpers.h"
#include "dbus_new.h"
#include "dbus_new_handlers.h"
#include "dbus_dict_helpers.h"


struct wps_start_params {
	int role; /* 0 - not set, 1 - enrollee, 2 - registrar */
	int type; /* 0 - not set, 1 - pin,      2 - pbc       */
	u8 *bssid;
	char *pin;
	u8 *p2p_dev_addr;
};


static int wpas_dbus_handler_wps_role(DBusMessage *message,
				      DBusMessageIter *entry_iter,
				      struct wps_start_params *params,
				      DBusMessage **reply)
{
	DBusMessageIter variant_iter;
	char *val;

	dbus_message_iter_recurse(entry_iter, &variant_iter);
	if (dbus_message_iter_get_arg_type(&variant_iter) !=
	    DBUS_TYPE_STRING) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong Role type, "
			   "string required");
		*reply = wpas_dbus_error_invalid_args(message,
						      "Role must be a string");
		return -1;
	}
	dbus_message_iter_get_basic(&variant_iter, &val);
	if (os_strcmp(val, "enrollee") == 0)
		params->role = 1;
	else if (os_strcmp(val, "registrar") == 0)
		params->role = 2;
	else {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Uknown role %s", val);
		*reply = wpas_dbus_error_invalid_args(message, val);
		return -1;
	}
	return 0;
}


static int wpas_dbus_handler_wps_type(DBusMessage *message,
				      DBusMessageIter *entry_iter,
				      struct wps_start_params *params,
				      DBusMessage **reply)
{
	DBusMessageIter variant_iter;
	char *val;

	dbus_message_iter_recurse(entry_iter, &variant_iter);
	if (dbus_message_iter_get_arg_type(&variant_iter) !=
	    DBUS_TYPE_STRING) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong Type type, "
			   "string required");
		*reply = wpas_dbus_error_invalid_args(message,
						      "Type must be a string");
		return -1;
	}
	dbus_message_iter_get_basic(&variant_iter, &val);
	if (os_strcmp(val, "pin") == 0)
		params->type = 1;
	else if (os_strcmp(val, "pbc") == 0)
		params->type = 2;
	else {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Unknown type %s",
			   val);
		*reply = wpas_dbus_error_invalid_args(message, val);
		return -1;
	}
	return 0;
}


static int wpas_dbus_handler_wps_bssid(DBusMessage *message,
				       DBusMessageIter *entry_iter,
				       struct wps_start_params *params,
				       DBusMessage **reply)
{
	DBusMessageIter variant_iter, array_iter;
	int len;

	dbus_message_iter_recurse(entry_iter, &variant_iter);
	if (dbus_message_iter_get_arg_type(&variant_iter) != DBUS_TYPE_ARRAY ||
	    dbus_message_iter_get_element_type(&variant_iter) !=
	    DBUS_TYPE_BYTE) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong Bssid type, "
			   "byte array required");
		*reply = wpas_dbus_error_invalid_args(
			message, "Bssid must be a byte array");
		return -1;
	}
	dbus_message_iter_recurse(&variant_iter, &array_iter);
	dbus_message_iter_get_fixed_array(&array_iter, &params->bssid, &len);
	if (len != ETH_ALEN) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Stsrt - Wrong Bssid length "
			   "%d", len);
		*reply = wpas_dbus_error_invalid_args(message,
						      "Bssid is wrong length");
		return -1;
	}
	return 0;
}


static int wpas_dbus_handler_wps_pin(DBusMessage *message,
				     DBusMessageIter *entry_iter,
				     struct wps_start_params *params,
				     DBusMessage **reply)
{
	DBusMessageIter variant_iter;

	dbus_message_iter_recurse(entry_iter, &variant_iter);
	if (dbus_message_iter_get_arg_type(&variant_iter) !=
	    DBUS_TYPE_STRING) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong Pin type, "
			   "string required");
		*reply = wpas_dbus_error_invalid_args(message,
						      "Pin must be a string");
		return -1;
	}
	dbus_message_iter_get_basic(&variant_iter, &params->pin);
	return 0;
}


#ifdef CONFIG_P2P
static int wpas_dbus_handler_wps_p2p_dev_addr(DBusMessage *message,
					      DBusMessageIter *entry_iter,
					      struct wps_start_params *params,
					      DBusMessage **reply)
{
	DBusMessageIter variant_iter, array_iter;
	int len;

	dbus_message_iter_recurse(entry_iter, &variant_iter);
	if (dbus_message_iter_get_arg_type(&variant_iter) != DBUS_TYPE_ARRAY ||
	    dbus_message_iter_get_element_type(&variant_iter) !=
	    DBUS_TYPE_BYTE) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong "
			   "P2PDeviceAddress type, byte array required");
		*reply = wpas_dbus_error_invalid_args(
			message, "P2PDeviceAddress must be a byte array");
		return -1;
	}
	dbus_message_iter_recurse(&variant_iter, &array_iter);
	dbus_message_iter_get_fixed_array(&array_iter, &params->p2p_dev_addr,
					  &len);
	if (len != ETH_ALEN) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong "
			   "P2PDeviceAddress length %d", len);
		*reply = wpas_dbus_error_invalid_args(message,
						      "P2PDeviceAddress "
						      "has wrong length");
		return -1;
	}
	return 0;
}
#endif /* CONFIG_P2P */


static int wpas_dbus_handler_wps_start_entry(DBusMessage *message, char *key,
					     DBusMessageIter *entry_iter,
					     struct wps_start_params *params,
					     DBusMessage **reply)
{
	if (os_strcmp(key, "Role") == 0)
		return wpas_dbus_handler_wps_role(message, entry_iter,
						  params, reply);
	else if (os_strcmp(key, "Type") == 0)
		return wpas_dbus_handler_wps_type(message, entry_iter,
						  params, reply);
	else if (os_strcmp(key, "Bssid") == 0)
		return wpas_dbus_handler_wps_bssid(message, entry_iter,
						   params, reply);
	else if (os_strcmp(key, "Pin") == 0)
		return wpas_dbus_handler_wps_pin(message, entry_iter,
						 params, reply);
#ifdef CONFIG_P2P
	else if (os_strcmp(key, "P2PDeviceAddress") == 0)
		return wpas_dbus_handler_wps_p2p_dev_addr(message, entry_iter,
							  params, reply);
#endif /* CONFIG_P2P */

	wpa_printf(MSG_DEBUG, "dbus: WPS.Start - unknown key %s", key);
	*reply = wpas_dbus_error_invalid_args(message, key);
	return -1;
}


/**
 * wpas_dbus_handler_wps_start - Start WPS configuration
 * @message: Pointer to incoming dbus message
 * @wpa_s: %wpa_supplicant data structure
 * Returns: DBus message dictionary on success or DBus error on failure
 *
 * Handler for "Start" method call. DBus dictionary argument contains
 * information about role (enrollee or registrar), authorization method
 * (pin or push button) and optionally pin and bssid. Returned message
 * has a dictionary argument which may contain newly generated pin (optional).
 */
DBusMessage * wpas_dbus_handler_wps_start(DBusMessage *message,
					  struct wpa_supplicant *wpa_s)
{
	DBusMessage *reply = NULL;
	DBusMessageIter iter, dict_iter, entry_iter;
	struct wps_start_params params;
	char *key;
	char npin[9] = { '\0' };
	int ret;

	os_memset(&params, 0, sizeof(params));
	dbus_message_iter_init(message, &iter);

	dbus_message_iter_recurse(&iter, &dict_iter);
	while (dbus_message_iter_get_arg_type(&dict_iter) ==
	       DBUS_TYPE_DICT_ENTRY) {
		dbus_message_iter_recurse(&dict_iter, &entry_iter);

		dbus_message_iter_get_basic(&entry_iter, &key);
		dbus_message_iter_next(&entry_iter);

		if (wpas_dbus_handler_wps_start_entry(message, key,
						      &entry_iter,
						      &params, &reply))
			return reply;

		dbus_message_iter_next(&dict_iter);
	}

	if (params.role == 0) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Role not specified");
		return wpas_dbus_error_invalid_args(message,
						    "Role not specified");
	} else if (params.role == 1 && params.type == 0) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Type not specified");
		return wpas_dbus_error_invalid_args(message,
						    "Type not specified");
	} else if (params.role == 2 && params.pin == NULL) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Pin required for "
			   "registrar role");
		return wpas_dbus_error_invalid_args(
			message, "Pin required for registrar role.");
	}

	if (params.role == 2)
		ret = wpas_wps_start_reg(wpa_s, params.bssid, params.pin,
					 NULL);
	else if (params.type == 1) {
#ifdef CONFIG_AP
		if (wpa_s->ap_iface)
			ret = wpa_supplicant_ap_wps_pin(wpa_s,
							params.bssid,
							params.pin,
							npin, sizeof(npin));
		else
#endif /* CONFIG_AP */
		{
			ret = wpas_wps_start_pin(wpa_s, params.bssid,
						 params.pin, 0,
						 DEV_PW_DEFAULT);
			if (ret > 0)
				os_snprintf(npin, sizeof(npin), "%08d", ret);
		}
	} else {
#ifdef CONFIG_AP
		if (wpa_s->ap_iface)
			ret = wpa_supplicant_ap_wps_pbc(wpa_s,
							params.bssid,
							params.p2p_dev_addr);
		else
#endif /* CONFIG_AP */
		ret = wpas_wps_start_pbc(wpa_s, params.bssid, 0);
	}

	if (ret < 0) {
		wpa_printf(MSG_DEBUG, "dbus: WPS.Start wpas_wps_failed in "
			   "role %s and key %s",
			   (params.role == 1 ? "enrollee" : "registrar"),
			   (params.type == 0 ? "" :
			    (params.type == 1 ? "pin" : "pbc")));
		return wpas_dbus_error_unknown_error(message,
						     "WPS start failed");
	}

	reply = dbus_message_new_method_return(message);
	if (!reply) {
		return dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
					      NULL);
	}

	dbus_message_iter_init_append(reply, &iter);
	if (!wpa_dbus_dict_open_write(&iter, &dict_iter)) {
		dbus_message_unref(reply);
		return dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
					      NULL);
	}

	if (os_strlen(npin) > 0) {
		if (!wpa_dbus_dict_append_string(&dict_iter, "Pin", npin)) {
			dbus_message_unref(reply);
			return dbus_message_new_error(message,
						      DBUS_ERROR_NO_MEMORY,
						      NULL);
		}
	}

	if (!wpa_dbus_dict_close_write(&iter, &dict_iter)) {
		dbus_message_unref(reply);
		return dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
					      NULL);
	}

	return reply;
}


/**
 * wpas_dbus_getter_process_credentials - Check if credentials are processed
 * @message: Pointer to incoming dbus message
 * @wpa_s: %wpa_supplicant data structure
 * Returns: TRUE on success, FALSE on failure
 *
 * Getter for "ProcessCredentials" property. Returns returned boolean will be
 * true if wps_cred_processing configuration field is not equal to 1 or false
 * if otherwise.
 */
dbus_bool_t wpas_dbus_getter_process_credentials(DBusMessageIter *iter,
						 DBusError *error,
						 void *user_data)
{
	struct wpa_supplicant *wpa_s = user_data;
	dbus_bool_t process = (wpa_s->conf->wps_cred_processing != 1);
	return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_BOOLEAN,
						&process, error);
}


/**
 * wpas_dbus_setter_process_credentials - Set credentials_processed conf param
 * @iter: Pointer to incoming dbus message iter
 * @error: Location to store error on failure
 * @user_data: Function specific data
 * Returns: TRUE on success, FALSE on failure
 *
 * Setter for "ProcessCredentials" property. Sets credentials_processed on 2
 * if boolean argument is true or on 1 if otherwise.
 */
dbus_bool_t wpas_dbus_setter_process_credentials(DBusMessageIter *iter,
						 DBusError *error,
						 void *user_data)
{
	struct wpa_supplicant *wpa_s = user_data;
	dbus_bool_t process_credentials, old_pc;

	if (!wpas_dbus_simple_property_setter(iter, error, DBUS_TYPE_BOOLEAN,
					      &process_credentials))
		return FALSE;

	old_pc = (wpa_s->conf->wps_cred_processing != 1);
	wpa_s->conf->wps_cred_processing = (process_credentials ? 2 : 1);

	if ((wpa_s->conf->wps_cred_processing != 1) != old_pc)
		wpa_dbus_mark_property_changed(wpa_s->global->dbus,
					       wpa_s->dbus_new_path,
					       WPAS_DBUS_NEW_IFACE_WPS,
					       "ProcessCredentials");

	return TRUE;
}