2 * WPA Supplicant / UNIX domain socket -based control interface
3 * Copyright (c) 2004-2014, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
17 #include <cutils/sockets.h>
20 #include "utils/common.h"
21 #include "utils/eloop.h"
22 #include "utils/list.h"
23 #include "eapol_supp/eapol_supp_sm.h"
25 #include "wpa_supplicant_i.h"
26 #include "ctrl_iface.h"
28 /* Per-interface ctrl_iface */
31 * struct wpa_ctrl_dst - Internal data structure of control interface monitors
33 * This structure is used to store information about registered control
34 * interface monitors into struct wpa_supplicant. This data is private to
35 * ctrl_iface_unix.c and should not be touched directly from other files.
39 struct sockaddr_un addr
;
46 struct ctrl_iface_priv
{
47 struct wpa_supplicant
*wpa_s
;
49 struct dl_list ctrl_dst
;
50 int android_control_socket
;
54 struct ctrl_iface_global_priv
{
55 struct wpa_global
*global
;
57 struct dl_list ctrl_dst
;
58 int android_control_socket
;
62 static void wpa_supplicant_ctrl_iface_send(struct wpa_supplicant
*wpa_s
,
63 const char *ifname
, int sock
,
64 struct dl_list
*ctrl_dst
,
65 int level
, const char *buf
,
67 struct ctrl_iface_priv
*priv
,
68 struct ctrl_iface_global_priv
*gp
);
69 static int wpas_ctrl_iface_reinit(struct wpa_supplicant
*wpa_s
,
70 struct ctrl_iface_priv
*priv
);
71 static int wpas_ctrl_iface_global_reinit(struct wpa_global
*global
,
72 struct ctrl_iface_global_priv
*priv
);
75 static int wpa_supplicant_ctrl_iface_attach(struct dl_list
*ctrl_dst
,
76 struct sockaddr_un
*from
,
79 struct wpa_ctrl_dst
*dst
;
82 dst
= os_zalloc(sizeof(*dst
));
85 os_memcpy(&dst
->addr
, from
, sizeof(struct sockaddr_un
));
86 dst
->addrlen
= fromlen
;
87 dst
->debug_level
= MSG_INFO
;
88 dl_list_add(ctrl_dst
, &dst
->list
);
89 printf_encode(addr_txt
, sizeof(addr_txt
),
90 (u8
*) from
->sun_path
,
91 fromlen
- offsetof(struct sockaddr_un
, sun_path
));
92 wpa_printf(MSG_DEBUG
, "CTRL_IFACE monitor attached %s", addr_txt
);
97 static int wpa_supplicant_ctrl_iface_detach(struct dl_list
*ctrl_dst
,
98 struct sockaddr_un
*from
,
101 struct wpa_ctrl_dst
*dst
;
103 dl_list_for_each(dst
, ctrl_dst
, struct wpa_ctrl_dst
, list
) {
104 if (fromlen
== dst
->addrlen
&&
105 os_memcmp(from
->sun_path
, dst
->addr
.sun_path
,
106 fromlen
- offsetof(struct sockaddr_un
, sun_path
))
109 printf_encode(addr_txt
, sizeof(addr_txt
),
110 (u8
*) from
->sun_path
,
112 offsetof(struct sockaddr_un
, sun_path
));
113 wpa_printf(MSG_DEBUG
, "CTRL_IFACE monitor detached %s",
115 dl_list_del(&dst
->list
);
124 static int wpa_supplicant_ctrl_iface_level(struct ctrl_iface_priv
*priv
,
125 struct sockaddr_un
*from
,
129 struct wpa_ctrl_dst
*dst
;
131 wpa_printf(MSG_DEBUG
, "CTRL_IFACE LEVEL %s", level
);
133 dl_list_for_each(dst
, &priv
->ctrl_dst
, struct wpa_ctrl_dst
, list
) {
134 if (fromlen
== dst
->addrlen
&&
135 os_memcmp(from
->sun_path
, dst
->addr
.sun_path
,
136 fromlen
- offsetof(struct sockaddr_un
, sun_path
))
139 dst
->debug_level
= atoi(level
);
140 printf_encode(addr_txt
, sizeof(addr_txt
),
141 (u8
*) from
->sun_path
, fromlen
-
142 offsetof(struct sockaddr_un
, sun_path
));
143 wpa_printf(MSG_DEBUG
, "CTRL_IFACE changed monitor level to %d for %s",
144 dst
->debug_level
, addr_txt
);
153 static void wpa_supplicant_ctrl_iface_receive(int sock
, void *eloop_ctx
,
156 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
157 struct ctrl_iface_priv
*priv
= sock_ctx
;
160 struct sockaddr_un from
;
161 socklen_t fromlen
= sizeof(from
);
162 char *reply
= NULL
, *reply_buf
= NULL
;
163 size_t reply_len
= 0;
164 int new_attached
= 0;
166 res
= recvfrom(sock
, buf
, sizeof(buf
) - 1, 0,
167 (struct sockaddr
*) &from
, &fromlen
);
169 wpa_printf(MSG_ERROR
, "recvfrom(ctrl_iface): %s",
175 if (os_strcmp(buf
, "ATTACH") == 0) {
176 if (wpa_supplicant_ctrl_iface_attach(&priv
->ctrl_dst
, &from
,
183 } else if (os_strcmp(buf
, "DETACH") == 0) {
184 if (wpa_supplicant_ctrl_iface_detach(&priv
->ctrl_dst
, &from
,
189 } else if (os_strncmp(buf
, "LEVEL ", 6) == 0) {
190 if (wpa_supplicant_ctrl_iface_level(priv
, &from
, fromlen
,
196 reply_buf
= wpa_supplicant_ctrl_iface_process(wpa_s
, buf
,
201 if (!reply
&& reply_len
== 1) {
204 } else if (!reply
&& reply_len
== 2) {
210 if (sendto(sock
, reply
, reply_len
, 0, (struct sockaddr
*) &from
,
213 wpa_dbg(wpa_s
, MSG_DEBUG
,
214 "ctrl_iface sendto failed: %d - %s",
215 _errno
, strerror(_errno
));
216 if (_errno
== ENOBUFS
|| _errno
== EAGAIN
) {
218 * The socket send buffer could be full. This
219 * may happen if client programs are not
220 * receiving their pending messages. Close and
221 * reopen the socket as a workaround to avoid
222 * getting stuck being unable to send any new
225 sock
= wpas_ctrl_iface_reinit(wpa_s
, priv
);
227 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to reinitialize ctrl_iface socket");
231 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to send response to ATTACH - detaching");
233 wpa_supplicant_ctrl_iface_detach(
234 &priv
->ctrl_dst
, &from
, fromlen
);
241 eapol_sm_notify_ctrl_attached(wpa_s
->eapol
);
245 static char * wpa_supplicant_ctrl_iface_path(struct wpa_supplicant
*wpa_s
)
249 char *pbuf
, *dir
= NULL
;
252 if (wpa_s
->conf
->ctrl_interface
== NULL
)
255 pbuf
= os_strdup(wpa_s
->conf
->ctrl_interface
);
258 if (os_strncmp(pbuf
, "DIR=", 4) == 0) {
261 gid_str
= os_strstr(dir
, " GROUP=");
267 len
= os_strlen(dir
) + os_strlen(wpa_s
->ifname
) + 2;
268 buf
= os_malloc(len
);
274 res
= os_snprintf(buf
, len
, "%s/%s", dir
, wpa_s
->ifname
);
275 if (os_snprintf_error(len
, res
)) {
282 /* Windows/WinPcap uses interface names that are not suitable
283 * as a file name - convert invalid chars to underscores */
291 #endif /* __CYGWIN__ */
297 static void wpa_supplicant_ctrl_iface_msg_cb(void *ctx
, int level
, int global
,
298 const char *txt
, size_t len
)
300 struct wpa_supplicant
*wpa_s
= ctx
;
305 if (global
!= 2 && wpa_s
->global
->ctrl_iface
) {
306 struct ctrl_iface_global_priv
*priv
= wpa_s
->global
->ctrl_iface
;
307 if (!dl_list_empty(&priv
->ctrl_dst
)) {
308 wpa_supplicant_ctrl_iface_send(wpa_s
, global
? NULL
:
312 level
, txt
, len
, NULL
,
317 if (wpa_s
->ctrl_iface
== NULL
)
319 wpa_supplicant_ctrl_iface_send(wpa_s
, NULL
, wpa_s
->ctrl_iface
->sock
,
320 &wpa_s
->ctrl_iface
->ctrl_dst
,
321 level
, txt
, len
, wpa_s
->ctrl_iface
,
326 static int wpas_ctrl_iface_open_sock(struct wpa_supplicant
*wpa_s
,
327 struct ctrl_iface_priv
*priv
)
329 struct sockaddr_un addr
;
333 char *buf
, *dir
= NULL
, *gid_str
= NULL
;
338 buf
= os_strdup(wpa_s
->conf
->ctrl_interface
);
342 os_snprintf(addr
.sun_path
, sizeof(addr
.sun_path
), "wpa_%s",
343 wpa_s
->conf
->ctrl_interface
);
344 priv
->sock
= android_get_control_socket(addr
.sun_path
);
345 if (priv
->sock
>= 0) {
346 priv
->android_control_socket
= 1;
350 if (os_strncmp(buf
, "DIR=", 4) == 0) {
352 gid_str
= os_strstr(dir
, " GROUP=");
359 gid_str
= wpa_s
->conf
->ctrl_interface_group
;
362 if (mkdir(dir
, S_IRWXU
| S_IRWXG
) < 0) {
363 if (errno
== EEXIST
) {
364 wpa_printf(MSG_DEBUG
, "Using existing control "
365 "interface directory.");
367 wpa_printf(MSG_ERROR
, "mkdir[ctrl_interface=%s]: %s",
368 dir
, strerror(errno
));
375 * wpa_supplicant is started from /init.*.rc on Android and that seems
376 * to be using umask 0077 which would leave the control interface
377 * directory without group access. This breaks things since Wi-Fi
378 * framework assumes that this directory can be accessed by other
379 * applications in the wifi group. Fix this by adding group access even
380 * if umask value would prevent this.
382 if (chmod(dir
, S_IRWXU
| S_IRWXG
) < 0) {
383 wpa_printf(MSG_ERROR
, "CTRL: Could not chmod directory: %s",
385 /* Try to continue anyway */
390 grp
= getgrnam(gid_str
);
394 wpa_printf(MSG_DEBUG
, "ctrl_interface_group=%d"
395 " (from group name '%s')",
398 /* Group name not found - try to parse this as gid */
399 gid
= strtol(gid_str
, &endp
, 10);
400 if (*gid_str
== '\0' || *endp
!= '\0') {
401 wpa_printf(MSG_ERROR
, "CTRL: Invalid group "
406 wpa_printf(MSG_DEBUG
, "ctrl_interface_group=%d",
411 if (gid_set
&& chown(dir
, -1, gid
) < 0) {
412 wpa_printf(MSG_ERROR
, "chown[ctrl_interface=%s,gid=%d]: %s",
413 dir
, (int) gid
, strerror(errno
));
417 /* Make sure the group can enter and read the directory */
419 chmod(dir
, S_IRUSR
| S_IWUSR
| S_IXUSR
| S_IRGRP
| S_IXGRP
) < 0) {
420 wpa_printf(MSG_ERROR
, "CTRL: chmod[ctrl_interface]: %s",
425 if (os_strlen(dir
) + 1 + os_strlen(wpa_s
->ifname
) >=
426 sizeof(addr
.sun_path
)) {
427 wpa_printf(MSG_ERROR
, "ctrl_iface path limit exceeded");
431 priv
->sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
432 if (priv
->sock
< 0) {
433 wpa_printf(MSG_ERROR
, "socket(PF_UNIX): %s", strerror(errno
));
437 os_memset(&addr
, 0, sizeof(addr
));
438 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
439 addr
.sun_len
= sizeof(addr
);
440 #endif /* __FreeBSD__ */
441 addr
.sun_family
= AF_UNIX
;
442 fname
= wpa_supplicant_ctrl_iface_path(wpa_s
);
445 os_strlcpy(addr
.sun_path
, fname
, sizeof(addr
.sun_path
));
446 if (bind(priv
->sock
, (struct sockaddr
*) &addr
, sizeof(addr
)) < 0) {
447 wpa_printf(MSG_DEBUG
, "ctrl_iface bind(PF_UNIX) failed: %s",
449 if (connect(priv
->sock
, (struct sockaddr
*) &addr
,
451 wpa_printf(MSG_DEBUG
, "ctrl_iface exists, but does not"
452 " allow connections - assuming it was left"
453 "over from forced program termination");
454 if (unlink(fname
) < 0) {
455 wpa_printf(MSG_ERROR
,
456 "Could not unlink existing ctrl_iface socket '%s': %s",
457 fname
, strerror(errno
));
460 if (bind(priv
->sock
, (struct sockaddr
*) &addr
,
462 wpa_printf(MSG_ERROR
, "supp-ctrl-iface-init: bind(PF_UNIX): %s",
466 wpa_printf(MSG_DEBUG
, "Successfully replaced leftover "
467 "ctrl_iface socket '%s'", fname
);
469 wpa_printf(MSG_INFO
, "ctrl_iface exists and seems to "
470 "be in use - cannot override it");
471 wpa_printf(MSG_INFO
, "Delete '%s' manually if it is "
472 "not used anymore", fname
);
479 if (gid_set
&& chown(fname
, -1, gid
) < 0) {
480 wpa_printf(MSG_ERROR
, "chown[ctrl_interface=%s,gid=%d]: %s",
481 fname
, (int) gid
, strerror(errno
));
485 if (chmod(fname
, S_IRWXU
| S_IRWXG
) < 0) {
486 wpa_printf(MSG_ERROR
, "chmod[ctrl_interface=%s]: %s",
487 fname
, strerror(errno
));
497 * Make socket non-blocking so that we don't hang forever if
498 * target dies unexpectedly.
500 flags
= fcntl(priv
->sock
, F_GETFL
);
503 if (fcntl(priv
->sock
, F_SETFL
, flags
) < 0) {
504 wpa_printf(MSG_INFO
, "fcntl(ctrl, O_NONBLOCK): %s",
506 /* Not fatal, continue on.*/
510 eloop_register_read_sock(priv
->sock
, wpa_supplicant_ctrl_iface_receive
,
512 wpa_msg_register_cb(wpa_supplicant_ctrl_iface_msg_cb
);
518 if (priv
->sock
>= 0) {
531 struct ctrl_iface_priv
*
532 wpa_supplicant_ctrl_iface_init(struct wpa_supplicant
*wpa_s
)
534 struct ctrl_iface_priv
*priv
;
536 priv
= os_zalloc(sizeof(*priv
));
539 dl_list_init(&priv
->ctrl_dst
);
543 if (wpa_s
->conf
->ctrl_interface
== NULL
)
546 if (wpas_ctrl_iface_open_sock(wpa_s
, priv
) < 0) {
555 static int wpas_ctrl_iface_reinit(struct wpa_supplicant
*wpa_s
,
556 struct ctrl_iface_priv
*priv
)
564 * On Android, the control socket being used may be the socket
565 * that is created when wpa_supplicant is started as a /init.*.rc
566 * service. Such a socket is maintained as a key-value pair in
567 * Android's environment. Closing this control socket would leave us
568 * in a bad state with an invalid socket descriptor.
570 if (priv
->android_control_socket
)
573 eloop_unregister_read_sock(priv
->sock
);
576 res
= wpas_ctrl_iface_open_sock(wpa_s
, priv
);
583 void wpa_supplicant_ctrl_iface_deinit(struct ctrl_iface_priv
*priv
)
585 struct wpa_ctrl_dst
*dst
, *prev
;
587 if (priv
->sock
> -1) {
589 char *buf
, *dir
= NULL
;
590 eloop_unregister_read_sock(priv
->sock
);
591 if (!dl_list_empty(&priv
->ctrl_dst
)) {
593 * Wait before closing the control socket if
594 * there are any attached monitors in order to allow
595 * them to receive any pending messages.
597 wpa_printf(MSG_DEBUG
, "CTRL_IFACE wait for attached "
598 "monitors to receive messages");
603 fname
= wpa_supplicant_ctrl_iface_path(priv
->wpa_s
);
609 if (priv
->wpa_s
->conf
->ctrl_interface
== NULL
)
611 buf
= os_strdup(priv
->wpa_s
->conf
->ctrl_interface
);
614 if (os_strncmp(buf
, "DIR=", 4) == 0) {
617 gid_str
= os_strstr(dir
, " GROUP=");
623 if (rmdir(dir
) < 0) {
624 if (errno
== ENOTEMPTY
) {
625 wpa_printf(MSG_DEBUG
, "Control interface "
626 "directory not empty - leaving it "
629 wpa_printf(MSG_ERROR
,
630 "rmdir[ctrl_interface=%s]: %s",
631 dir
, strerror(errno
));
638 dl_list_for_each_safe(dst
, prev
, &priv
->ctrl_dst
, struct wpa_ctrl_dst
,
646 * wpa_supplicant_ctrl_iface_send - Send a control interface packet to monitors
647 * @ifname: Interface name for global control socket or %NULL
648 * @sock: Local socket fd
649 * @ctrl_dst: List of attached listeners
650 * @level: Priority level of the message
652 * @len: Message length
654 * Send a packet to all monitor programs attached to the control interface.
656 static void wpa_supplicant_ctrl_iface_send(struct wpa_supplicant
*wpa_s
,
657 const char *ifname
, int sock
,
658 struct dl_list
*ctrl_dst
,
659 int level
, const char *buf
,
661 struct ctrl_iface_priv
*priv
,
662 struct ctrl_iface_global_priv
*gp
)
664 struct wpa_ctrl_dst
*dst
, *next
;
670 if (sock
< 0 || dl_list_empty(ctrl_dst
))
673 res
= os_snprintf(levelstr
, sizeof(levelstr
), "<%d>", level
);
674 if (os_snprintf_error(sizeof(levelstr
), res
))
678 io
[idx
].iov_base
= "IFNAME=";
681 io
[idx
].iov_base
= (char *) ifname
;
682 io
[idx
].iov_len
= os_strlen(ifname
);
684 io
[idx
].iov_base
= " ";
688 io
[idx
].iov_base
= levelstr
;
689 io
[idx
].iov_len
= os_strlen(levelstr
);
691 io
[idx
].iov_base
= (char *) buf
;
692 io
[idx
].iov_len
= len
;
694 os_memset(&msg
, 0, sizeof(msg
));
696 msg
.msg_iovlen
= idx
;
698 dl_list_for_each_safe(dst
, next
, ctrl_dst
, struct wpa_ctrl_dst
, list
) {
702 if (level
< dst
->debug_level
)
705 printf_encode(addr_txt
, sizeof(addr_txt
),
706 (u8
*) dst
->addr
.sun_path
, dst
->addrlen
-
707 offsetof(struct sockaddr_un
, sun_path
));
708 msg
.msg_name
= (void *) &dst
->addr
;
709 msg
.msg_namelen
= dst
->addrlen
;
710 if (sendmsg(sock
, &msg
, MSG_DONTWAIT
) >= 0) {
711 wpa_printf(MSG_DEBUG
, "CTRL_IFACE monitor sent successfully to %s",
718 wpa_printf(MSG_DEBUG
, "CTRL_IFACE monitor[%s]: %d - %s",
719 addr_txt
, errno
, strerror(errno
));
722 if (dst
->errors
> 10 || _errno
== ENOENT
|| _errno
== EPERM
) {
723 wpa_printf(MSG_INFO
, "CTRL_IFACE: Detach monitor %s that cannot receive messages",
725 wpa_supplicant_ctrl_iface_detach(ctrl_dst
, &dst
->addr
,
729 if (_errno
== ENOBUFS
|| _errno
== EAGAIN
) {
731 * The socket send buffer could be full. This may happen
732 * if client programs are not receiving their pending
733 * messages. Close and reopen the socket as a workaround
734 * to avoid getting stuck being unable to send any new
738 sock
= wpas_ctrl_iface_reinit(wpa_s
, priv
);
740 sock
= wpas_ctrl_iface_global_reinit(
745 wpa_dbg(wpa_s
, MSG_DEBUG
,
746 "Failed to reinitialize ctrl_iface socket");
754 void wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv
*priv
)
758 struct sockaddr_un from
;
759 socklen_t fromlen
= sizeof(from
);
762 wpa_printf(MSG_DEBUG
, "CTRL_IFACE - %s - wait for monitor to "
763 "attach", priv
->wpa_s
->ifname
);
764 eloop_wait_for_read_sock(priv
->sock
);
766 res
= recvfrom(priv
->sock
, buf
, sizeof(buf
) - 1, 0,
767 (struct sockaddr
*) &from
, &fromlen
);
769 wpa_printf(MSG_ERROR
, "recvfrom(ctrl_iface): %s",
775 if (os_strcmp(buf
, "ATTACH") == 0) {
776 /* handle ATTACH signal of first monitor interface */
777 if (!wpa_supplicant_ctrl_iface_attach(&priv
->ctrl_dst
,
779 if (sendto(priv
->sock
, "OK\n", 3, 0,
780 (struct sockaddr
*) &from
, fromlen
) <
782 wpa_printf(MSG_DEBUG
, "ctrl_iface sendto failed: %s",
788 if (sendto(priv
->sock
, "FAIL\n", 5, 0,
789 (struct sockaddr
*) &from
, fromlen
) <
791 wpa_printf(MSG_DEBUG
, "ctrl_iface sendto failed: %s",
796 /* return FAIL for all other signals */
797 if (sendto(priv
->sock
, "FAIL\n", 5, 0,
798 (struct sockaddr
*) &from
, fromlen
) < 0) {
799 wpa_printf(MSG_DEBUG
,
800 "ctrl_iface sendto failed: %s",
808 /* Global ctrl_iface */
810 static void wpa_supplicant_global_ctrl_iface_receive(int sock
, void *eloop_ctx
,
813 struct wpa_global
*global
= eloop_ctx
;
814 struct ctrl_iface_global_priv
*priv
= sock_ctx
;
817 struct sockaddr_un from
;
818 socklen_t fromlen
= sizeof(from
);
819 char *reply
= NULL
, *reply_buf
= NULL
;
822 res
= recvfrom(sock
, buf
, sizeof(buf
) - 1, 0,
823 (struct sockaddr
*) &from
, &fromlen
);
825 wpa_printf(MSG_ERROR
, "recvfrom(ctrl_iface): %s",
831 if (os_strcmp(buf
, "ATTACH") == 0) {
832 if (wpa_supplicant_ctrl_iface_attach(&priv
->ctrl_dst
, &from
,
837 } else if (os_strcmp(buf
, "DETACH") == 0) {
838 if (wpa_supplicant_ctrl_iface_detach(&priv
->ctrl_dst
, &from
,
844 reply_buf
= wpa_supplicant_global_ctrl_iface_process(
845 global
, buf
, &reply_len
);
849 if (!reply
&& reply_len
== 1) {
852 } else if (!reply
&& reply_len
== 2) {
858 if (sendto(sock
, reply
, reply_len
, 0, (struct sockaddr
*) &from
,
860 wpa_printf(MSG_DEBUG
, "ctrl_iface sendto failed: %s",
868 static int wpas_global_ctrl_iface_open_sock(struct wpa_global
*global
,
869 struct ctrl_iface_global_priv
*priv
)
871 struct sockaddr_un addr
;
872 const char *ctrl
= global
->params
.ctrl_interface
;
875 wpa_printf(MSG_DEBUG
, "Global control interface '%s'", ctrl
);
878 if (os_strncmp(ctrl
, "@android:", 9) == 0) {
879 priv
->sock
= android_get_control_socket(ctrl
+ 9);
880 if (priv
->sock
< 0) {
881 wpa_printf(MSG_ERROR
, "Failed to open Android control "
882 "socket '%s'", ctrl
+ 9);
885 wpa_printf(MSG_DEBUG
, "Using Android control socket '%s'",
887 priv
->android_control_socket
= 1;
891 if (os_strncmp(ctrl
, "@abstract:", 10) != 0) {
893 * Backwards compatibility - try to open an Android control
894 * socket and if that fails, assume this was a UNIX domain
897 priv
->sock
= android_get_control_socket(ctrl
);
898 if (priv
->sock
>= 0) {
899 wpa_printf(MSG_DEBUG
,
900 "Using Android control socket '%s'",
902 priv
->android_control_socket
= 1;
908 priv
->sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
909 if (priv
->sock
< 0) {
910 wpa_printf(MSG_ERROR
, "socket(PF_UNIX): %s", strerror(errno
));
914 os_memset(&addr
, 0, sizeof(addr
));
915 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
916 addr
.sun_len
= sizeof(addr
);
917 #endif /* __FreeBSD__ */
918 addr
.sun_family
= AF_UNIX
;
920 if (os_strncmp(ctrl
, "@abstract:", 10) == 0) {
921 addr
.sun_path
[0] = '\0';
922 os_strlcpy(addr
.sun_path
+ 1, ctrl
+ 10,
923 sizeof(addr
.sun_path
) - 1);
924 if (bind(priv
->sock
, (struct sockaddr
*) &addr
, sizeof(addr
)) <
926 wpa_printf(MSG_ERROR
, "supp-global-ctrl-iface-init: "
927 "bind(PF_UNIX;%s) failed: %s",
928 ctrl
, strerror(errno
));
931 wpa_printf(MSG_DEBUG
, "Using Abstract control socket '%s'",
936 os_strlcpy(addr
.sun_path
, ctrl
, sizeof(addr
.sun_path
));
937 if (bind(priv
->sock
, (struct sockaddr
*) &addr
, sizeof(addr
)) < 0) {
938 wpa_printf(MSG_INFO
, "supp-global-ctrl-iface-init(%s) (will try fixup): bind(PF_UNIX): %s",
939 ctrl
, strerror(errno
));
940 if (connect(priv
->sock
, (struct sockaddr
*) &addr
,
942 wpa_printf(MSG_DEBUG
, "ctrl_iface exists, but does not"
943 " allow connections - assuming it was left"
944 "over from forced program termination");
945 if (unlink(ctrl
) < 0) {
946 wpa_printf(MSG_ERROR
,
947 "Could not unlink existing ctrl_iface socket '%s': %s",
948 ctrl
, strerror(errno
));
951 if (bind(priv
->sock
, (struct sockaddr
*) &addr
,
953 wpa_printf(MSG_ERROR
, "supp-glb-iface-init: bind(PF_UNIX;%s): %s",
954 ctrl
, strerror(errno
));
957 wpa_printf(MSG_DEBUG
, "Successfully replaced leftover "
958 "ctrl_iface socket '%s'",
961 wpa_printf(MSG_INFO
, "ctrl_iface exists and seems to "
962 "be in use - cannot override it");
963 wpa_printf(MSG_INFO
, "Delete '%s' manually if it is "
970 wpa_printf(MSG_DEBUG
, "Using UNIX control socket '%s'", ctrl
);
972 if (global
->params
.ctrl_interface_group
) {
973 char *gid_str
= global
->params
.ctrl_interface_group
;
978 grp
= getgrnam(gid_str
);
981 wpa_printf(MSG_DEBUG
, "ctrl_interface_group=%d"
982 " (from group name '%s')",
985 /* Group name not found - try to parse this as gid */
986 gid
= strtol(gid_str
, &endp
, 10);
987 if (*gid_str
== '\0' || *endp
!= '\0') {
988 wpa_printf(MSG_ERROR
, "CTRL: Invalid group "
992 wpa_printf(MSG_DEBUG
, "ctrl_interface_group=%d",
995 if (chown(ctrl
, -1, gid
) < 0) {
996 wpa_printf(MSG_ERROR
,
997 "chown[global_ctrl_interface=%s,gid=%d]: %s",
998 ctrl
, (int) gid
, strerror(errno
));
1002 if (chmod(ctrl
, S_IRWXU
| S_IRWXG
) < 0) {
1003 wpa_printf(MSG_ERROR
,
1004 "chmod[global_ctrl_interface=%s]: %s",
1005 ctrl
, strerror(errno
));
1009 if (chmod(ctrl
, S_IRWXU
) < 0) {
1010 wpa_printf(MSG_DEBUG
,
1011 "chmod[global_ctrl_interface=%s](S_IRWXU): %s",
1012 ctrl
, strerror(errno
));
1013 /* continue anyway since group change was not required
1021 * Make socket non-blocking so that we don't hang forever if
1022 * target dies unexpectedly.
1024 flags
= fcntl(priv
->sock
, F_GETFL
);
1026 flags
|= O_NONBLOCK
;
1027 if (fcntl(priv
->sock
, F_SETFL
, flags
) < 0) {
1028 wpa_printf(MSG_INFO
, "fcntl(ctrl, O_NONBLOCK): %s",
1030 /* Not fatal, continue on.*/
1034 eloop_register_read_sock(priv
->sock
,
1035 wpa_supplicant_global_ctrl_iface_receive
,
1041 if (priv
->sock
>= 0) {
1049 struct ctrl_iface_global_priv
*
1050 wpa_supplicant_global_ctrl_iface_init(struct wpa_global
*global
)
1052 struct ctrl_iface_global_priv
*priv
;
1054 priv
= os_zalloc(sizeof(*priv
));
1057 dl_list_init(&priv
->ctrl_dst
);
1058 priv
->global
= global
;
1061 if (global
->params
.ctrl_interface
== NULL
)
1064 if (wpas_global_ctrl_iface_open_sock(global
, priv
) < 0) {
1069 wpa_msg_register_cb(wpa_supplicant_ctrl_iface_msg_cb
);
1075 static int wpas_ctrl_iface_global_reinit(struct wpa_global
*global
,
1076 struct ctrl_iface_global_priv
*priv
)
1080 if (priv
->sock
<= 0)
1084 * On Android, the control socket being used may be the socket
1085 * that is created when wpa_supplicant is started as a /init.*.rc
1086 * service. Such a socket is maintained as a key-value pair in
1087 * Android's environment. Closing this control socket would leave us
1088 * in a bad state with an invalid socket descriptor.
1090 if (priv
->android_control_socket
)
1093 eloop_unregister_read_sock(priv
->sock
);
1096 res
= wpas_global_ctrl_iface_open_sock(global
, priv
);
1104 wpa_supplicant_global_ctrl_iface_deinit(struct ctrl_iface_global_priv
*priv
)
1106 struct wpa_ctrl_dst
*dst
, *prev
;
1108 if (priv
->sock
>= 0) {
1109 eloop_unregister_read_sock(priv
->sock
);
1112 if (priv
->global
->params
.ctrl_interface
)
1113 unlink(priv
->global
->params
.ctrl_interface
);
1114 dl_list_for_each_safe(dst
, prev
, &priv
->ctrl_dst
, struct wpa_ctrl_dst
,