aboutsummaryrefslogtreecommitdiffstats
path: root/hostapd/hostapd_cli.c
blob: 7cc84bb98f7dfffd3b2de703714cdbdef5d351d0 (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
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
/*
 * hostapd - command line interface for hostapd daemon
 * Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#include "includes.h"
#include <dirent.h>

#include "common/wpa_ctrl.h"
#include "common.h"
#include "common/version.h"


static const char *hostapd_cli_version =
"hostapd_cli v" VERSION_STR "\n"
"Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi> and contributors";


static const char *hostapd_cli_license =
"This program is free software. You can distribute it and/or modify it\n"
"under the terms of the GNU General Public License version 2.\n"
"\n"
"Alternatively, this software may be distributed under the terms of the\n"
"BSD license. See README and COPYING for more details.\n";

static const char *hostapd_cli_full_license =
"This program is free software; you can redistribute it and/or modify\n"
"it under the terms of the GNU General Public License version 2 as\n"
"published by the Free Software Foundation.\n"
"\n"
"This program is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
"GNU General Public License for more details.\n"
"\n"
"You should have received a copy of the GNU General Public License\n"
"along with this program; if not, write to the Free Software\n"
"Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA\n"
"\n"
"Alternatively, this software may be distributed under the terms of the\n"
"BSD license.\n"
"\n"
"Redistribution and use in source and binary forms, with or without\n"
"modification, are permitted provided that the following conditions are\n"
"met:\n"
"\n"
"1. Redistributions of source code must retain the above copyright\n"
"   notice, this list of conditions and the following disclaimer.\n"
"\n"
"2. Redistributions in binary form must reproduce the above copyright\n"
"   notice, this list of conditions and the following disclaimer in the\n"
"   documentation and/or other materials provided with the distribution.\n"
"\n"
"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
"   names of its contributors may be used to endorse or promote products\n"
"   derived from this software without specific prior written permission.\n"
"\n"
"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n"
"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
"\n";

static const char *commands_help =
"Commands:\n"
"   mib                  get MIB variables (dot1x, dot11, radius)\n"
"   sta <addr>           get MIB variables for one station\n"
"   all_sta              get MIB variables for all stations\n"
"   new_sta <addr>       add a new station\n"
"   deauthenticate <addr>  deauthenticate a station\n"
"   disassociate <addr>  disassociate a station\n"
#ifdef CONFIG_IEEE80211W
"   sa_query <addr>      send SA Query to a station\n"
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WPS
"   wps_pin <uuid> <pin> [timeout] [addr]  add WPS Enrollee PIN\n"
"   wps_check_pin <PIN>  verify PIN checksum\n"
"   wps_pbc              indicate button pushed to initiate PBC\n"
#ifdef CONFIG_WPS_OOB
"   wps_oob <type> <path> <method>  use WPS with out-of-band (UFD)\n"
#endif /* CONFIG_WPS_OOB */
"   wps_ap_pin <cmd> [params..]  enable/disable AP PIN\n"
"   wps_config <SSID> <auth> <encr> <key>  configure AP\n"
#endif /* CONFIG_WPS */
"   get_config           show current configuration\n"
"   help                 show this usage help\n"
"   interface [ifname]   show interfaces/select interface\n"
"   level <debug level>  change debug level\n"
"   license              show full hostapd_cli license\n"
"   quit                 exit hostapd_cli\n";

static struct wpa_ctrl *ctrl_conn;
static int hostapd_cli_quit = 0;
static int hostapd_cli_attached = 0;
static const char *ctrl_iface_dir = "/var/run/hostapd";
static char *ctrl_ifname = NULL;
static const char *pid_file = NULL;
static const char *action_file = NULL;
static int ping_interval = 5;


static void usage(void)
{
	fprintf(stderr, "%s\n", hostapd_cli_version);
	fprintf(stderr,
		"\n"
		"usage: hostapd_cli [-p<path>] [-i<ifname>] [-hvB] "
		"[-a<path>] \\\n"
		"                   [-G<ping interval>] [command..]\n"
		"\n"
		"Options:\n"
		"   -h           help (show this usage text)\n"
		"   -v           shown version information\n"
		"   -p<path>     path to find control sockets (default: "
		"/var/run/hostapd)\n"
		"   -a<file>     run in daemon mode executing the action file "
		"based on events\n"
		"                from hostapd\n"
		"   -B           run a daemon in the background\n"
		"   -i<ifname>   Interface to listen on (default: first "
		"interface found in the\n"
		"                socket path)\n\n"
		"%s",
		commands_help);
}


static struct wpa_ctrl * hostapd_cli_open_connection(const char *ifname)
{
	char *cfile;
	int flen;

	if (ifname == NULL)
		return NULL;

	flen = strlen(ctrl_iface_dir) + strlen(ifname) + 2;
	cfile = malloc(flen);
	if (cfile == NULL)
		return NULL;
	snprintf(cfile, flen, "%s/%s", ctrl_iface_dir, ifname);

	ctrl_conn = wpa_ctrl_open(cfile);
	free(cfile);
	return ctrl_conn;
}


static void hostapd_cli_close_connection(void)
{
	if (ctrl_conn == NULL)
		return;

	if (hostapd_cli_attached) {
		wpa_ctrl_detach(ctrl_conn);
		hostapd_cli_attached = 0;
	}
	wpa_ctrl_close(ctrl_conn);
	ctrl_conn = NULL;
}


static void hostapd_cli_msg_cb(char *msg, size_t len)
{
	printf("%s\n", msg);
}


static int _wpa_ctrl_command(struct wpa_ctrl *ctrl, char *cmd, int print)
{
	char buf[4096];
	size_t len;
	int ret;

	if (ctrl_conn == NULL) {
		printf("Not connected to hostapd - command dropped.\n");
		return -1;
	}
	len = sizeof(buf) - 1;
	ret = wpa_ctrl_request(ctrl, cmd, strlen(cmd), buf, &len,
			       hostapd_cli_msg_cb);
	if (ret == -2) {
		printf("'%s' command timed out.\n", cmd);
		return -2;
	} else if (ret < 0) {
		printf("'%s' command failed.\n", cmd);
		return -1;
	}
	if (print) {
		buf[len] = '\0';
		printf("%s", buf);
	}
	return 0;
}


static inline int wpa_ctrl_command(struct wpa_ctrl *ctrl, char *cmd)
{
	return _wpa_ctrl_command(ctrl, cmd, 1);
}


static int hostapd_cli_cmd_ping(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	return wpa_ctrl_command(ctrl, "PING");
}


static int hostapd_cli_cmd_mib(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	return wpa_ctrl_command(ctrl, "MIB");
}


static int hostapd_cli_exec(const char *program, const char *arg1,
			    const char *arg2)
{
	char *cmd;
	size_t len;
	int res;
	int ret = 0;

	len = os_strlen(program) + os_strlen(arg1) + os_strlen(arg2) + 3;
	cmd = os_malloc(len);
	if (cmd == NULL)
		return -1;
	res = os_snprintf(cmd, len, "%s %s %s", program, arg1, arg2);
	if (res < 0 || (size_t) res >= len) {
		os_free(cmd);
		return -1;
	}
	cmd[len - 1] = '\0';
#ifndef _WIN32_WCE
	if (system(cmd) < 0)
		ret = -1;
#endif /* _WIN32_WCE */
	os_free(cmd);

	return ret;
}


static void hostapd_cli_action_process(char *msg, size_t len)
{
	const char *pos;

	pos = msg;
	if (*pos == '<') {
		pos = os_strchr(pos, '>');
		if (pos)
			pos++;
		else
			pos = msg;
	}

	hostapd_cli_exec(action_file, ctrl_ifname, pos);
}


static int hostapd_cli_cmd_sta(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	char buf[64];
	if (argc != 1) {
		printf("Invalid 'sta' command - exactly one argument, STA "
		       "address, is required.\n");
		return -1;
	}
	snprintf(buf, sizeof(buf), "STA %s", argv[0]);
	return wpa_ctrl_command(ctrl, buf);
}


static int hostapd_cli_cmd_new_sta(struct wpa_ctrl *ctrl, int argc,
				   char *argv[])
{
	char buf[64];
	if (argc != 1) {
		printf("Invalid 'new_sta' command - exactly one argument, STA "
		       "address, is required.\n");
		return -1;
	}
	snprintf(buf, sizeof(buf), "NEW_STA %s", argv[0]);
	return wpa_ctrl_command(ctrl, buf);
}


static int hostapd_cli_cmd_deauthenticate(struct wpa_ctrl *ctrl, int argc,
					  char *argv[])
{
	char buf[64];
	if (argc < 1) {
		printf("Invalid 'deauthenticate' command - exactly one "
		       "argument, STA address, is required.\n");
		return -1;
	}
	if (argc > 1)
		os_snprintf(buf, sizeof(buf), "DEAUTHENTICATE %s %s",
			    argv[0], argv[1]);
	else
		os_snprintf(buf, sizeof(buf), "DEAUTHENTICATE %s", argv[0]);
	return wpa_ctrl_command(ctrl, buf);
}


static int hostapd_cli_cmd_disassociate(struct wpa_ctrl *ctrl, int argc,
					char *argv[])
{
	char buf[64];
	if (argc < 1) {
		printf("Invalid 'disassociate' command - exactly one "
		       "argument, STA address, is required.\n");
		return -1;
	}
	if (argc > 1)
		os_snprintf(buf, sizeof(buf), "DISASSOCIATE %s %s",
			    argv[0], argv[1]);
	else
		os_snprintf(buf, sizeof(buf), "DISASSOCIATE %s", argv[0]);
	return wpa_ctrl_command(ctrl, buf);
}


#ifdef CONFIG_IEEE80211W
static int hostapd_cli_cmd_sa_query(struct wpa_ctrl *ctrl, int argc,
				    char *argv[])
{
	char buf[64];
	if (argc != 1) {
		printf("Invalid 'sa_query' command - exactly one argument, "
		       "STA address, is required.\n");
		return -1;
	}
	snprintf(buf, sizeof(buf), "SA_QUERY %s", argv[0]);
	return wpa_ctrl_command(ctrl, buf);
}
#endif /* CONFIG_IEEE80211W */


#ifdef CONFIG_WPS
static int hostapd_cli_cmd_wps_pin(struct wpa_ctrl *ctrl, int argc,
				   char *argv[])
{
	char buf[256];
	if (argc < 2) {
		printf("Invalid 'wps_pin' command - at least two arguments, "
		       "UUID and PIN, are required.\n");
		return -1;
	}
	if (argc > 3)
		snprintf(buf, sizeof(buf), "WPS_PIN %s %s %s %s",
			 argv[0], argv[1], argv[2], argv[3]);
	else if (argc > 2)
		snprintf(buf, sizeof(buf), "WPS_PIN %s %s %s",
			 argv[0], argv[1], argv[2]);
	else
		snprintf(buf, sizeof(buf), "WPS_PIN %s %s", argv[0], argv[1]);
	return wpa_ctrl_command(ctrl, buf);
}


static int hostapd_cli_cmd_wps_check_pin(struct wpa_ctrl *ctrl, int argc,
					 char *argv[])
{
	char cmd[256];
	int res;

	if (argc != 1 && argc != 2) {
		printf("Invalid WPS_CHECK_PIN command: needs one argument:\n"
		       "- PIN to be verified\n");
		return -1;
	}

	if (argc == 2)
		res = os_snprintf(cmd, sizeof(cmd), "WPS_CHECK_PIN %s %s",
				  argv[0], argv[1]);
	else
		res = os_snprintf(cmd, sizeof(cmd), "WPS_CHECK_PIN %s",
				  argv[0]);
	if (res < 0 || (size_t) res >= sizeof(cmd) - 1) {
		printf("Too long WPS_CHECK_PIN command.\n");
		return -1;
	}
	return wpa_ctrl_command(ctrl, cmd);
}


static int hostapd_cli_cmd_wps_pbc(struct wpa_ctrl *ctrl, int argc,
				   char *argv[])
{
	return wpa_ctrl_command(ctrl, "WPS_PBC");
}


#ifdef CONFIG_WPS_OOB
static int hostapd_cli_cmd_wps_oob(struct wpa_ctrl *ctrl, int argc,
				   char *argv[])
{
	char cmd[256];
	int res;

	if (argc != 3 && argc != 4) {
		printf("Invalid WPS_OOB command: need three or four "
		       "arguments:\n"
		       "- DEV_TYPE: use 'ufd' or 'nfc'\n"
		       "- PATH: path of OOB device like '/mnt'\n"
		       "- METHOD: OOB method 'pin-e' or 'pin-r', "
		       "'cred'\n"
		       "- DEV_NAME: (only for NFC) device name like "
		       "'pn531'\n");
		return -1;
	}

	if (argc == 3)
		res = os_snprintf(cmd, sizeof(cmd), "WPS_OOB %s %s %s",
				  argv[0], argv[1], argv[2]);
	else
		res = os_snprintf(cmd, sizeof(cmd), "WPS_OOB %s %s %s %s",
				  argv[0], argv[1], argv[2], argv[3]);
	if (res < 0 || (size_t) res >= sizeof(cmd) - 1) {
		printf("Too long WPS_OOB command.\n");
		return -1;
	}
	return wpa_ctrl_command(ctrl, cmd);
}
#endif /* CONFIG_WPS_OOB */


static int hostapd_cli_cmd_wps_ap_pin(struct wpa_ctrl *ctrl, int argc,
				      char *argv[])
{
	char buf[64];
	if (argc < 1) {
		printf("Invalid 'wps_ap_pin' command - at least one argument "
		       "is required.\n");
		return -1;
	}
	if (argc > 2)
		snprintf(buf, sizeof(buf), "WPS_AP_PIN %s %s %s",
			 argv[0], argv[1], argv[2]);
	else if (argc > 1)
		snprintf(buf, sizeof(buf), "WPS_AP_PIN %s %s",
			 argv[0], argv[1]);
	else
		snprintf(buf, sizeof(buf), "WPS_AP_PIN %s", argv[0]);
	return wpa_ctrl_command(ctrl, buf);
}


static int hostapd_cli_cmd_wps_config(struct wpa_ctrl *ctrl, int argc,
				      char *argv[])
{
	char buf[256];
	char ssid_hex[2 * 32 + 1];
	char key_hex[2 * 64 + 1];
	int i;

	if (argc < 1) {
		printf("Invalid 'wps_config' command - at least two arguments "
		       "are required.\n");
		return -1;
	}

	ssid_hex[0] = '\0';
	for (i = 0; i < 32; i++) {
		if (argv[0][i] == '\0')
			break;
		os_snprintf(&ssid_hex[i * 2], 3, "%02x", argv[0][i]);
	}

	key_hex[0] = '\0';
	if (argc > 3) {
		for (i = 0; i < 64; i++) {
			if (argv[3][i] == '\0')
				break;
			os_snprintf(&key_hex[i * 2], 3, "%02x",
				    argv[3][i]);
		}
	}

	if (argc > 3)
		snprintf(buf, sizeof(buf), "WPS_CONFIG %s %s %s %s",
			 ssid_hex, argv[1], argv[2], key_hex);
	else if (argc > 2)
		snprintf(buf, sizeof(buf), "WPS_CONFIG %s %s %s",
			 ssid_hex, argv[1], argv[2]);
	else
		snprintf(buf, sizeof(buf), "WPS_CONFIG %s %s",
			 ssid_hex, argv[1]);
	return wpa_ctrl_command(ctrl, buf);
}
#endif /* CONFIG_WPS */


static int hostapd_cli_cmd_get_config(struct wpa_ctrl *ctrl, int argc,
				      char *argv[])
{
	return wpa_ctrl_command(ctrl, "GET_CONFIG");
}


static int wpa_ctrl_command_sta(struct wpa_ctrl *ctrl, char *cmd,
				char *addr, size_t addr_len)
{
	char buf[4096], *pos;
	size_t len;
	int ret;

	if (ctrl_conn == NULL) {
		printf("Not connected to hostapd - command dropped.\n");
		return -1;
	}
	len = sizeof(buf) - 1;
	ret = wpa_ctrl_request(ctrl, cmd, strlen(cmd), buf, &len,
			       hostapd_cli_msg_cb);
	if (ret == -2) {
		printf("'%s' command timed out.\n", cmd);
		return -2;
	} else if (ret < 0) {
		printf("'%s' command failed.\n", cmd);
		return -1;
	}

	buf[len] = '\0';
	if (memcmp(buf, "FAIL", 4) == 0)
		return -1;
	printf("%s", buf);

	pos = buf;
	while (*pos != '\0' && *pos != '\n')
		pos++;
	*pos = '\0';
	os_strlcpy(addr, buf, addr_len);
	return 0;
}


static int hostapd_cli_cmd_all_sta(struct wpa_ctrl *ctrl, int argc,
				   char *argv[])
{
	char addr[32], cmd[64];

	if (wpa_ctrl_command_sta(ctrl, "STA-FIRST", addr, sizeof(addr)))
		return 0;
	do {
		snprintf(cmd, sizeof(cmd), "STA-NEXT %s", addr);
	} while (wpa_ctrl_command_sta(ctrl, cmd, addr, sizeof(addr)) == 0);

	return -1;
}


static int hostapd_cli_cmd_help(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	printf("%s", commands_help);
	return 0;
}


static int hostapd_cli_cmd_license(struct wpa_ctrl *ctrl, int argc,
				   char *argv[])
{
	printf("%s\n\n%s\n", hostapd_cli_version, hostapd_cli_full_license);
	return 0;
}


static int hostapd_cli_cmd_quit(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	hostapd_cli_quit = 1;
	return 0;
}


static int hostapd_cli_cmd_level(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	char cmd[256];
	if (argc != 1) {
		printf("Invalid LEVEL command: needs one argument (debug "
		       "level)\n");
		return 0;
	}
	snprintf(cmd, sizeof(cmd), "LEVEL %s", argv[0]);
	return wpa_ctrl_command(ctrl, cmd);
}


static void hostapd_cli_list_interfaces(struct wpa_ctrl *ctrl)
{
	struct dirent *dent;
	DIR *dir;

	dir = opendir(ctrl_iface_dir);
	if (dir == NULL) {
		printf("Control interface directory '%s' could not be "
		       "openned.\n", ctrl_iface_dir);
		return;
	}

	printf("Available interfaces:\n");
	while ((dent = readdir(dir))) {
		if (strcmp(dent->d_name, ".") == 0 ||
		    strcmp(dent->d_name, "..") == 0)
			continue;
		printf("%s\n", dent->d_name);
	}
	closedir(dir);
}


static int hostapd_cli_cmd_interface(struct wpa_ctrl *ctrl, int argc,
				     char *argv[])
{
	if (argc < 1) {
		hostapd_cli_list_interfaces(ctrl);
		return 0;
	}

	hostapd_cli_close_connection();
	free(ctrl_ifname);
	ctrl_ifname = strdup(argv[0]);

	if (hostapd_cli_open_connection(ctrl_ifname)) {
		printf("Connected to interface '%s.\n", ctrl_ifname);
		if (wpa_ctrl_attach(ctrl_conn) == 0) {
			hostapd_cli_attached = 1;
		} else {
			printf("Warning: Failed to attach to "
			       "hostapd.\n");
		}
	} else {
		printf("Could not connect to interface '%s' - re-trying\n",
			ctrl_ifname);
	}
	return 0;
}


static int hostapd_cli_cmd_set(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	char cmd[256];
	int res;

	if (argc != 2) {
		printf("Invalid SET command: needs two arguments (variable "
		       "name and value)\n");
		return -1;
	}

	res = os_snprintf(cmd, sizeof(cmd), "SET %s %s", argv[0], argv[1]);
	if (res < 0 || (size_t) res >= sizeof(cmd) - 1) {
		printf("Too long SET command.\n");
		return -1;
	}
	return wpa_ctrl_command(ctrl, cmd);
}


static int hostapd_cli_cmd_get(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	char cmd[256];
	int res;

	if (argc != 1) {
		printf("Invalid GET command: needs one argument (variable "
		       "name)\n");
		return -1;
	}

	res = os_snprintf(cmd, sizeof(cmd), "GET %s", argv[0]);
	if (res < 0 || (size_t) res >= sizeof(cmd) - 1) {
		printf("Too long GET command.\n");
		return -1;
	}
	return wpa_ctrl_command(ctrl, cmd);
}


struct hostapd_cli_cmd {
	const char *cmd;
	int (*handler)(struct wpa_ctrl *ctrl, int argc, char *argv[]);
};

static struct hostapd_cli_cmd hostapd_cli_commands[] = {
	{ "ping", hostapd_cli_cmd_ping },
	{ "mib", hostapd_cli_cmd_mib },
	{ "sta", hostapd_cli_cmd_sta },
	{ "all_sta", hostapd_cli_cmd_all_sta },
	{ "new_sta", hostapd_cli_cmd_new_sta },
	{ "deauthenticate", hostapd_cli_cmd_deauthenticate },
	{ "disassociate", hostapd_cli_cmd_disassociate },
#ifdef CONFIG_IEEE80211W
	{ "sa_query", hostapd_cli_cmd_sa_query },
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WPS
	{ "wps_pin", hostapd_cli_cmd_wps_pin },
	{ "wps_check_pin", hostapd_cli_cmd_wps_check_pin },
	{ "wps_pbc", hostapd_cli_cmd_wps_pbc },
#ifdef CONFIG_WPS_OOB
	{ "wps_oob", hostapd_cli_cmd_wps_oob },
#endif /* CONFIG_WPS_OOB */
	{ "wps_ap_pin", hostapd_cli_cmd_wps_ap_pin },
	{ "wps_config", hostapd_cli_cmd_wps_config },
#endif /* CONFIG_WPS */
	{ "get_config", hostapd_cli_cmd_get_config },
	{ "help", hostapd_cli_cmd_help },
	{ "interface", hostapd_cli_cmd_interface },
	{ "level", hostapd_cli_cmd_level },
	{ "license", hostapd_cli_cmd_license },
	{ "quit", hostapd_cli_cmd_quit },
	{ "set", hostapd_cli_cmd_set },
	{ "get", hostapd_cli_cmd_get },
	{ NULL, NULL }
};


static void wpa_request(struct wpa_ctrl *ctrl, int argc, char *argv[])
{
	struct hostapd_cli_cmd *cmd, *match = NULL;
	int count;

	count = 0;
	cmd = hostapd_cli_commands;
	while (cmd->cmd) {
		if (strncasecmp(cmd->cmd, argv[0], strlen(argv[0])) == 0) {
			match = cmd;
			if (os_strcasecmp(cmd->cmd, argv[0]) == 0) {
				/* we have an exact match */
				count = 1;
				break;
			}
			count++;
		}
		cmd++;
	}

	if (count > 1) {
		printf("Ambiguous command '%s'; possible commands:", argv[0]);
		cmd = hostapd_cli_commands;
		while (cmd->cmd) {
			if (strncasecmp(cmd->cmd, argv[0], strlen(argv[0])) ==
			    0) {
				printf(" %s", cmd->cmd);
			}
			cmd++;
		}
		printf("\n");
	} else if (count == 0) {
		printf("Unknown command '%s'\n", argv[0]);
	} else {
		match->handler(ctrl, argc - 1, &argv[1]);
	}
}


static void hostapd_cli_recv_pending(struct wpa_ctrl *ctrl, int in_read,
				     int action_monitor)
{
	int first = 1;
	if (ctrl_conn == NULL)
		return;
	while (wpa_ctrl_pending(ctrl)) {
		char buf[256];
		size_t len = sizeof(buf) - 1;
		if (wpa_ctrl_recv(ctrl, buf, &len) == 0) {
			buf[len] = '\0';
			if (action_monitor)
				hostapd_cli_action_process(buf, len);
			else {
				if (in_read && first)
					printf("\n");
				first = 0;
				printf("%s\n", buf);
			}
		} else {
			printf("Could not read pending message.\n");
			break;
		}
	}
}


static void hostapd_cli_interactive(void)
{
	const int max_args = 10;
	char cmd[256], *res, *argv[max_args], *pos;
	int argc;

	printf("\nInteractive mode\n\n");

	do {
		hostapd_cli_recv_pending(ctrl_conn, 0, 0);
		printf("> ");
		alarm(ping_interval);
		res = fgets(cmd, sizeof(cmd), stdin);
		alarm(0);
		if (res == NULL)
			break;
		pos = cmd;
		while (*pos != '\0') {
			if (*pos == '\n') {
				*pos = '\0';
				break;
			}
			pos++;
		}
		argc = 0;
		pos = cmd;
		for (;;) {
			while (*pos == ' ')
				pos++;
			if (*pos == '\0')
				break;
			argv[argc] = pos;
			argc++;
			if (argc == max_args)
				break;
			while (*pos != '\0' && *pos != ' ')
				pos++;
			if (*pos == ' ')
				*pos++ = '\0';
		}
		if (argc)
			wpa_request(ctrl_conn, argc, argv);
	} while (!hostapd_cli_quit);
}


static void hostapd_cli_cleanup(void)
{
	hostapd_cli_close_connection();
	if (pid_file)
		os_daemonize_terminate(pid_file);

	os_program_deinit();
}


static void hostapd_cli_terminate(int sig)
{
	hostapd_cli_cleanup();
	exit(0);
}


static void hostapd_cli_alarm(int sig)
{
	if (ctrl_conn && _wpa_ctrl_command(ctrl_conn, "PING", 0)) {
		printf("Connection to hostapd lost - trying to reconnect\n");
		hostapd_cli_close_connection();
	}
	if (!ctrl_conn) {
		ctrl_conn = hostapd_cli_open_connection(ctrl_ifname);
		if (ctrl_conn) {
			printf("Connection to hostapd re-established\n");
			if (wpa_ctrl_attach(ctrl_conn) == 0) {
				hostapd_cli_attached = 1;
			} else {
				printf("Warning: Failed to attach to "
				       "hostapd.\n");
			}
		}
	}
	if (ctrl_conn)
		hostapd_cli_recv_pending(ctrl_conn, 1, 0);
	alarm(ping_interval);
}


static void hostapd_cli_action(struct wpa_ctrl *ctrl)
{
	fd_set rfds;
	int fd, res;
	struct timeval tv;
	char buf[256];
	size_t len;

	fd = wpa_ctrl_get_fd(ctrl);

	while (!hostapd_cli_quit) {
		FD_ZERO(&rfds);
		FD_SET(fd, &rfds);
		tv.tv_sec = ping_interval;
		tv.tv_usec = 0;
		res = select(fd + 1, &rfds, NULL, NULL, &tv);
		if (res < 0 && errno != EINTR) {
			perror("select");
			break;
		}

		if (FD_ISSET(fd, &rfds))
			hostapd_cli_recv_pending(ctrl, 0, 1);
		else {
			len = sizeof(buf) - 1;
			if (wpa_ctrl_request(ctrl, "PING", 4, buf, &len,
					     hostapd_cli_action_process) < 0 ||
			    len < 4 || os_memcmp(buf, "PONG", 4) != 0) {
				printf("hostapd did not reply to PING "
				       "command - exiting\n");
				break;
			}
		}
	}
}


int main(int argc, char *argv[])
{
	int interactive;
	int warning_displayed = 0;
	int c;
	int daemonize = 0;

	if (os_program_init())
		return -1;

	for (;;) {
		c = getopt(argc, argv, "a:BhG:i:p:v");
		if (c < 0)
			break;
		switch (c) {
		case 'a':
			action_file = optarg;
			break;
		case 'B':
			daemonize = 1;
			break;
		case 'G':
			ping_interval = atoi(optarg);
			break;
		case 'h':
			usage();
			return 0;
		case 'v':
			printf("%s\n", hostapd_cli_version);
			return 0;
		case 'i':
			os_free(ctrl_ifname);
			ctrl_ifname = os_strdup(optarg);
			break;
		case 'p':
			ctrl_iface_dir = optarg;
			break;
		default:
			usage();
			return -1;
		}
	}

	interactive = (argc == optind) && (action_file == NULL);

	if (interactive) {
		printf("%s\n\n%s\n\n", hostapd_cli_version,
		       hostapd_cli_license);
	}

	for (;;) {
		if (ctrl_ifname == NULL) {
			struct dirent *dent;
			DIR *dir = opendir(ctrl_iface_dir);
			if (dir) {
				while ((dent = readdir(dir))) {
					if (os_strcmp(dent->d_name, ".") == 0
					    ||
					    os_strcmp(dent->d_name, "..") == 0)
						continue;
					printf("Selected interface '%s'\n",
					       dent->d_name);
					ctrl_ifname = os_strdup(dent->d_name);
					break;
				}
				closedir(dir);
			}
		}
		ctrl_conn = hostapd_cli_open_connection(ctrl_ifname);
		if (ctrl_conn) {
			if (warning_displayed)
				printf("Connection established.\n");
			break;
		}

		if (!interactive) {
			perror("Failed to connect to hostapd - "
			       "wpa_ctrl_open");
			return -1;
		}

		if (!warning_displayed) {
			printf("Could not connect to hostapd - re-trying\n");
			warning_displayed = 1;
		}
		os_sleep(1, 0);
		continue;
	}

	signal(SIGINT, hostapd_cli_terminate);
	signal(SIGTERM, hostapd_cli_terminate);
	signal(SIGALRM, hostapd_cli_alarm);

	if (interactive || action_file) {
		if (wpa_ctrl_attach(ctrl_conn) == 0) {
			hostapd_cli_attached = 1;
		} else {
			printf("Warning: Failed to attach to hostapd.\n");
			if (action_file)
				return -1;
		}
	}

	if (daemonize && os_daemonize(pid_file))
		return -1;

	if (interactive)
		hostapd_cli_interactive();
	else if (action_file)
		hostapd_cli_action(ctrl_conn);
	else
		wpa_request(ctrl_conn, argc - optind, &argv[optind]);

	os_free(ctrl_ifname);
	hostapd_cli_cleanup();
	return 0;
}