2 * WPA Supplicant / UNIX domain socket -based control interface
3 * Copyright (c) 2004-2013, 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;
53 struct ctrl_iface_global_priv {
54 struct wpa_global *global;
56 struct dl_list ctrl_dst;
60 static void wpa_supplicant_ctrl_iface_send(struct wpa_supplicant *wpa_s,
61 const char *ifname, int sock,
62 struct dl_list *ctrl_dst,
63 int level, const char *buf,
65 struct ctrl_iface_priv *priv,
66 struct ctrl_iface_global_priv *gp);
67 static int wpas_ctrl_iface_reinit(struct wpa_supplicant *wpa_s,
68 struct ctrl_iface_priv *priv);
69 static int wpas_ctrl_iface_global_reinit(struct wpa_global *global,
70 struct ctrl_iface_global_priv *priv);
73 static int wpa_supplicant_ctrl_iface_attach(struct dl_list *ctrl_dst,
74 struct sockaddr_un *from,
77 struct wpa_ctrl_dst *dst;
79 dst = os_zalloc(sizeof(*dst));
82 os_memcpy(&dst->addr, from, sizeof(struct sockaddr_un));
83 dst->addrlen = fromlen;
84 dst->debug_level = MSG_INFO;
85 dl_list_add(ctrl_dst, &dst->list);
86 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor attached",
87 (u8 *) from->sun_path,
88 fromlen - offsetof(struct sockaddr_un, sun_path));
93 static int wpa_supplicant_ctrl_iface_detach(struct dl_list *ctrl_dst,
94 struct sockaddr_un *from,
97 struct wpa_ctrl_dst *dst;
99 dl_list_for_each(dst, ctrl_dst, struct wpa_ctrl_dst, list) {
100 if (fromlen == dst->addrlen &&
101 os_memcmp(from->sun_path, dst->addr.sun_path,
102 fromlen - offsetof(struct sockaddr_un, sun_path))
104 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor detached",
105 (u8 *) from->sun_path,
107 offsetof(struct sockaddr_un, sun_path));
108 dl_list_del(&dst->list);
117 static int wpa_supplicant_ctrl_iface_level(struct ctrl_iface_priv *priv,
118 struct sockaddr_un *from,
122 struct wpa_ctrl_dst *dst;
124 wpa_printf(MSG_DEBUG, "CTRL_IFACE LEVEL %s", level);
126 dl_list_for_each(dst, &priv->ctrl_dst, struct wpa_ctrl_dst, list) {
127 if (fromlen == dst->addrlen &&
128 os_memcmp(from->sun_path, dst->addr.sun_path,
129 fromlen - offsetof(struct sockaddr_un, sun_path))
131 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE changed monitor "
132 "level", (u8 *) from->sun_path,
134 offsetof(struct sockaddr_un, sun_path));
135 dst->debug_level = atoi(level);
144 static void wpa_supplicant_ctrl_iface_receive(int sock, void *eloop_ctx,
147 struct wpa_supplicant *wpa_s = eloop_ctx;
148 struct ctrl_iface_priv *priv = sock_ctx;
151 struct sockaddr_un from;
152 socklen_t fromlen = sizeof(from);
153 char *reply = NULL, *reply_buf = NULL;
154 size_t reply_len = 0;
155 int new_attached = 0;
157 res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
158 (struct sockaddr *) &from, &fromlen);
160 wpa_printf(MSG_ERROR, "recvfrom(ctrl_iface): %s",
166 if (os_strcmp(buf, "ATTACH") == 0) {
167 if (wpa_supplicant_ctrl_iface_attach(&priv->ctrl_dst, &from,
174 } else if (os_strcmp(buf, "DETACH") == 0) {
175 if (wpa_supplicant_ctrl_iface_detach(&priv->ctrl_dst, &from,
180 } else if (os_strncmp(buf, "LEVEL ", 6) == 0) {
181 if (wpa_supplicant_ctrl_iface_level(priv, &from, fromlen,
187 reply_buf = wpa_supplicant_ctrl_iface_process(wpa_s, buf,
192 if (!reply && reply_len == 1) {
195 } else if (!reply && reply_len == 2) {
201 if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
204 wpa_dbg(wpa_s, MSG_DEBUG,
205 "ctrl_iface sendto failed: %d - %s",
206 _errno, strerror(_errno));
207 if (_errno == ENOBUFS || _errno == EAGAIN) {
209 * The socket send buffer could be full. This
210 * may happen if client programs are not
211 * receiving their pending messages. Close and
212 * reopen the socket as a workaround to avoid
213 * getting stuck being unable to send any new
216 sock = wpas_ctrl_iface_reinit(wpa_s, priv);
218 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to reinitialize ctrl_iface socket");
222 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to send response to ATTACH - detaching");
224 wpa_supplicant_ctrl_iface_detach(
225 &priv->ctrl_dst, &from, fromlen);
232 eapol_sm_notify_ctrl_attached(wpa_s->eapol);
236 static char * wpa_supplicant_ctrl_iface_path(struct wpa_supplicant *wpa_s)
240 char *pbuf, *dir = NULL, *gid_str = NULL;
243 if (wpa_s->conf->ctrl_interface == NULL)
246 pbuf = os_strdup(wpa_s->conf->ctrl_interface);
249 if (os_strncmp(pbuf, "DIR=", 4) == 0) {
251 gid_str = os_strstr(dir, " GROUP=");
259 len = os_strlen(dir) + os_strlen(wpa_s->ifname) + 2;
260 buf = os_malloc(len);
266 res = os_snprintf(buf, len, "%s/%s", dir, wpa_s->ifname);
267 if (res < 0 || (size_t) res >= len) {
274 /* Windows/WinPcap uses interface names that are not suitable
275 * as a file name - convert invalid chars to underscores */
283 #endif /* __CYGWIN__ */
289 static void wpa_supplicant_ctrl_iface_msg_cb(void *ctx, int level, int global,
290 const char *txt, size_t len)
292 struct wpa_supplicant *wpa_s = ctx;
297 if (global != 2 && wpa_s->global->ctrl_iface) {
298 struct ctrl_iface_global_priv *priv = wpa_s->global->ctrl_iface;
299 if (!dl_list_empty(&priv->ctrl_dst)) {
300 wpa_supplicant_ctrl_iface_send(wpa_s, global ? NULL :
304 level, txt, len, NULL,
309 if (wpa_s->ctrl_iface == NULL)
311 wpa_supplicant_ctrl_iface_send(wpa_s, NULL, wpa_s->ctrl_iface->sock,
312 &wpa_s->ctrl_iface->ctrl_dst,
313 level, txt, len, wpa_s->ctrl_iface,
318 static int wpas_ctrl_iface_open_sock(struct wpa_supplicant *wpa_s,
319 struct ctrl_iface_priv *priv)
321 struct sockaddr_un addr;
325 char *buf, *dir = NULL, *gid_str = NULL;
330 buf = os_strdup(wpa_s->conf->ctrl_interface);
334 os_snprintf(addr.sun_path, sizeof(addr.sun_path), "wpa_%s",
335 wpa_s->conf->ctrl_interface);
336 priv->sock = android_get_control_socket(addr.sun_path);
340 if (os_strncmp(buf, "DIR=", 4) == 0) {
342 gid_str = os_strstr(dir, " GROUP=");
349 gid_str = wpa_s->conf->ctrl_interface_group;
352 if (mkdir(dir, S_IRWXU | S_IRWXG) < 0) {
353 if (errno == EEXIST) {
354 wpa_printf(MSG_DEBUG, "Using existing control "
355 "interface directory.");
357 wpa_printf(MSG_ERROR, "mkdir[ctrl_interface=%s]: %s",
358 dir, strerror(errno));
365 * wpa_supplicant is started from /init.*.rc on Android and that seems
366 * to be using umask 0077 which would leave the control interface
367 * directory without group access. This breaks things since Wi-Fi
368 * framework assumes that this directory can be accessed by other
369 * applications in the wifi group. Fix this by adding group access even
370 * if umask value would prevent this.
372 if (chmod(dir, S_IRWXU | S_IRWXG) < 0) {
373 wpa_printf(MSG_ERROR, "CTRL: Could not chmod directory: %s",
375 /* Try to continue anyway */
380 grp = getgrnam(gid_str);
384 wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d"
385 " (from group name '%s')",
388 /* Group name not found - try to parse this as gid */
389 gid = strtol(gid_str, &endp, 10);
390 if (*gid_str == '\0' || *endp != '\0') {
391 wpa_printf(MSG_ERROR, "CTRL: Invalid group "
396 wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d",
401 if (gid_set && chown(dir, -1, gid) < 0) {
402 wpa_printf(MSG_ERROR, "chown[ctrl_interface=%s,gid=%d]: %s",
403 dir, (int) gid, strerror(errno));
407 /* Make sure the group can enter and read the directory */
409 chmod(dir, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP) < 0) {
410 wpa_printf(MSG_ERROR, "CTRL: chmod[ctrl_interface]: %s",
415 if (os_strlen(dir) + 1 + os_strlen(wpa_s->ifname) >=
416 sizeof(addr.sun_path)) {
417 wpa_printf(MSG_ERROR, "ctrl_iface path limit exceeded");
421 priv->sock = socket(PF_UNIX, SOCK_DGRAM, 0);
422 if (priv->sock < 0) {
423 wpa_printf(MSG_ERROR, "socket(PF_UNIX): %s", strerror(errno));
427 os_memset(&addr, 0, sizeof(addr));
428 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
429 addr.sun_len = sizeof(addr);
430 #endif /* __FreeBSD__ */
431 addr.sun_family = AF_UNIX;
432 fname = wpa_supplicant_ctrl_iface_path(wpa_s);
435 os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
436 if (bind(priv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
437 wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
439 if (connect(priv->sock, (struct sockaddr *) &addr,
441 wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
442 " allow connections - assuming it was left"
443 "over from forced program termination");
444 if (unlink(fname) < 0) {
445 wpa_printf(MSG_ERROR,
446 "Could not unlink existing ctrl_iface socket '%s': %s",
447 fname, strerror(errno));
450 if (bind(priv->sock, (struct sockaddr *) &addr,
452 wpa_printf(MSG_ERROR, "supp-ctrl-iface-init: bind(PF_UNIX): %s",
456 wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
457 "ctrl_iface socket '%s'", fname);
459 wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
460 "be in use - cannot override it");
461 wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
462 "not used anymore", fname);
469 if (gid_set && chown(fname, -1, gid) < 0) {
470 wpa_printf(MSG_ERROR, "chown[ctrl_interface=%s,gid=%d]: %s",
471 fname, (int) gid, strerror(errno));
475 if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
476 wpa_printf(MSG_ERROR, "chmod[ctrl_interface=%s]: %s",
477 fname, strerror(errno));
487 * Make socket non-blocking so that we don't hang forever if
488 * target dies unexpectedly.
490 flags = fcntl(priv->sock, F_GETFL);
493 if (fcntl(priv->sock, F_SETFL, flags) < 0) {
494 wpa_printf(MSG_INFO, "fcntl(ctrl, O_NONBLOCK): %s",
496 /* Not fatal, continue on.*/
500 eloop_register_read_sock(priv->sock, wpa_supplicant_ctrl_iface_receive,
502 wpa_msg_register_cb(wpa_supplicant_ctrl_iface_msg_cb);
508 if (priv->sock >= 0) {
521 struct ctrl_iface_priv *
522 wpa_supplicant_ctrl_iface_init(struct wpa_supplicant *wpa_s)
524 struct ctrl_iface_priv *priv;
526 priv = os_zalloc(sizeof(*priv));
529 dl_list_init(&priv->ctrl_dst);
533 if (wpa_s->conf->ctrl_interface == NULL)
536 if (wpas_ctrl_iface_open_sock(wpa_s, priv) < 0) {
545 static int wpas_ctrl_iface_reinit(struct wpa_supplicant *wpa_s,
546 struct ctrl_iface_priv *priv)
553 eloop_unregister_read_sock(priv->sock);
556 res = wpas_ctrl_iface_open_sock(wpa_s, priv);
563 void wpa_supplicant_ctrl_iface_deinit(struct ctrl_iface_priv *priv)
565 struct wpa_ctrl_dst *dst, *prev;
567 if (priv->sock > -1) {
569 char *buf, *dir = NULL, *gid_str = NULL;
570 eloop_unregister_read_sock(priv->sock);
571 if (!dl_list_empty(&priv->ctrl_dst)) {
573 * Wait before closing the control socket if
574 * there are any attached monitors in order to allow
575 * them to receive any pending messages.
577 wpa_printf(MSG_DEBUG, "CTRL_IFACE wait for attached "
578 "monitors to receive messages");
583 fname = wpa_supplicant_ctrl_iface_path(priv->wpa_s);
589 if (priv->wpa_s->conf->ctrl_interface == NULL)
591 buf = os_strdup(priv->wpa_s->conf->ctrl_interface);
594 if (os_strncmp(buf, "DIR=", 4) == 0) {
596 gid_str = os_strstr(dir, " GROUP=");
604 if (rmdir(dir) < 0) {
605 if (errno == ENOTEMPTY) {
606 wpa_printf(MSG_DEBUG, "Control interface "
607 "directory not empty - leaving it "
610 wpa_printf(MSG_ERROR,
611 "rmdir[ctrl_interface=%s]: %s",
612 dir, strerror(errno));
619 dl_list_for_each_safe(dst, prev, &priv->ctrl_dst, struct wpa_ctrl_dst,
627 * wpa_supplicant_ctrl_iface_send - Send a control interface packet to monitors
628 * @ifname: Interface name for global control socket or %NULL
629 * @sock: Local socket fd
630 * @ctrl_dst: List of attached listeners
631 * @level: Priority level of the message
633 * @len: Message length
635 * Send a packet to all monitor programs attached to the control interface.
637 static void wpa_supplicant_ctrl_iface_send(struct wpa_supplicant *wpa_s,
638 const char *ifname, int sock,
639 struct dl_list *ctrl_dst,
640 int level, const char *buf,
642 struct ctrl_iface_priv *priv,
643 struct ctrl_iface_global_priv *gp)
645 struct wpa_ctrl_dst *dst, *next;
651 if (sock < 0 || dl_list_empty(ctrl_dst))
654 res = os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
655 if (res < 0 || (size_t) res >= sizeof(levelstr))
659 io[idx].iov_base = "IFNAME=";
662 io[idx].iov_base = (char *) ifname;
663 io[idx].iov_len = os_strlen(ifname);
665 io[idx].iov_base = " ";
669 io[idx].iov_base = levelstr;
670 io[idx].iov_len = os_strlen(levelstr);
672 io[idx].iov_base = (char *) buf;
673 io[idx].iov_len = len;
675 os_memset(&msg, 0, sizeof(msg));
677 msg.msg_iovlen = idx;
680 dl_list_for_each_safe(dst, next, ctrl_dst, struct wpa_ctrl_dst, list) {
684 if (level < dst->debug_level)
687 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor send",
688 (u8 *) dst->addr.sun_path, dst->addrlen -
689 offsetof(struct sockaddr_un, sun_path));
690 msg.msg_name = (void *) &dst->addr;
691 msg.msg_namelen = dst->addrlen;
692 if (sendmsg(sock, &msg, MSG_DONTWAIT) >= 0) {
699 wpa_printf(MSG_INFO, "CTRL_IFACE monitor[%d]: %d - %s",
700 idx, errno, strerror(errno));
703 if (dst->errors > 10 || _errno == ENOENT || _errno == EPERM) {
704 wpa_printf(MSG_INFO, "CTRL_IFACE: Detach monitor that cannot receive messages");
705 wpa_supplicant_ctrl_iface_detach(ctrl_dst, &dst->addr,
709 if (_errno == ENOBUFS || _errno == EAGAIN) {
711 * The socket send buffer could be full. This may happen
712 * if client programs are not receiving their pending
713 * messages. Close and reopen the socket as a workaround
714 * to avoid getting stuck being unable to send any new
718 sock = wpas_ctrl_iface_reinit(wpa_s, priv);
720 sock = wpas_ctrl_iface_global_reinit(
725 wpa_dbg(wpa_s, MSG_DEBUG,
726 "Failed to reinitialize ctrl_iface socket");
734 void wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv *priv)
738 struct sockaddr_un from;
739 socklen_t fromlen = sizeof(from);
742 wpa_printf(MSG_DEBUG, "CTRL_IFACE - %s - wait for monitor to "
743 "attach", priv->wpa_s->ifname);
744 eloop_wait_for_read_sock(priv->sock);
746 res = recvfrom(priv->sock, buf, sizeof(buf) - 1, 0,
747 (struct sockaddr *) &from, &fromlen);
749 wpa_printf(MSG_ERROR, "recvfrom(ctrl_iface): %s",
755 if (os_strcmp(buf, "ATTACH") == 0) {
756 /* handle ATTACH signal of first monitor interface */
757 if (!wpa_supplicant_ctrl_iface_attach(&priv->ctrl_dst,
759 if (sendto(priv->sock, "OK\n", 3, 0,
760 (struct sockaddr *) &from, fromlen) <
762 wpa_printf(MSG_DEBUG, "ctrl_iface sendto failed: %s",
768 if (sendto(priv->sock, "FAIL\n", 5, 0,
769 (struct sockaddr *) &from, fromlen) <
771 wpa_printf(MSG_DEBUG, "ctrl_iface sendto failed: %s",
776 /* return FAIL for all other signals */
777 if (sendto(priv->sock, "FAIL\n", 5, 0,
778 (struct sockaddr *) &from, fromlen) < 0) {
779 wpa_printf(MSG_DEBUG,
780 "ctrl_iface sendto failed: %s",
788 /* Global ctrl_iface */
790 static void wpa_supplicant_global_ctrl_iface_receive(int sock, void *eloop_ctx,
793 struct wpa_global *global = eloop_ctx;
794 struct ctrl_iface_global_priv *priv = sock_ctx;
797 struct sockaddr_un from;
798 socklen_t fromlen = sizeof(from);
799 char *reply = NULL, *reply_buf = NULL;
802 res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
803 (struct sockaddr *) &from, &fromlen);
805 wpa_printf(MSG_ERROR, "recvfrom(ctrl_iface): %s",
811 if (os_strcmp(buf, "ATTACH") == 0) {
812 if (wpa_supplicant_ctrl_iface_attach(&priv->ctrl_dst, &from,
817 } else if (os_strcmp(buf, "DETACH") == 0) {
818 if (wpa_supplicant_ctrl_iface_detach(&priv->ctrl_dst, &from,
824 reply_buf = wpa_supplicant_global_ctrl_iface_process(
825 global, buf, &reply_len);
829 if (!reply && reply_len == 1) {
832 } else if (!reply && reply_len == 2) {
838 if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
840 wpa_printf(MSG_DEBUG, "ctrl_iface sendto failed: %s",
848 static int wpas_global_ctrl_iface_open_sock(struct wpa_global *global,
849 struct ctrl_iface_global_priv *priv)
851 struct sockaddr_un addr;
852 const char *ctrl = global->params.ctrl_interface;
855 wpa_printf(MSG_DEBUG, "Global control interface '%s'", ctrl);
858 if (os_strncmp(ctrl, "@android:", 9) == 0) {
859 priv->sock = android_get_control_socket(ctrl + 9);
860 if (priv->sock < 0) {
861 wpa_printf(MSG_ERROR, "Failed to open Android control "
862 "socket '%s'", ctrl + 9);
865 wpa_printf(MSG_DEBUG, "Using Android control socket '%s'",
870 if (os_strncmp(ctrl, "@abstract:", 10) != 0) {
872 * Backwards compatibility - try to open an Android control
873 * socket and if that fails, assume this was a UNIX domain
876 priv->sock = android_get_control_socket(ctrl);
877 if (priv->sock >= 0) {
878 wpa_printf(MSG_DEBUG,
879 "Using Android control socket '%s'",
886 priv->sock = socket(PF_UNIX, SOCK_DGRAM, 0);
887 if (priv->sock < 0) {
888 wpa_printf(MSG_ERROR, "socket(PF_UNIX): %s", strerror(errno));
892 os_memset(&addr, 0, sizeof(addr));
893 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
894 addr.sun_len = sizeof(addr);
895 #endif /* __FreeBSD__ */
896 addr.sun_family = AF_UNIX;
898 if (os_strncmp(ctrl, "@abstract:", 10) == 0) {
899 addr.sun_path[0] = '\0';
900 os_strlcpy(addr.sun_path + 1, ctrl + 10,
901 sizeof(addr.sun_path) - 1);
902 if (bind(priv->sock, (struct sockaddr *) &addr, sizeof(addr)) <
904 wpa_printf(MSG_ERROR, "supp-global-ctrl-iface-init: "
905 "bind(PF_UNIX;%s) failed: %s",
906 ctrl, strerror(errno));
909 wpa_printf(MSG_DEBUG, "Using Abstract control socket '%s'",
914 os_strlcpy(addr.sun_path, ctrl, sizeof(addr.sun_path));
915 if (bind(priv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
916 wpa_printf(MSG_INFO, "supp-global-ctrl-iface-init(%s) (will try fixup): bind(PF_UNIX): %s",
917 ctrl, strerror(errno));
918 if (connect(priv->sock, (struct sockaddr *) &addr,
920 wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
921 " allow connections - assuming it was left"
922 "over from forced program termination");
923 if (unlink(ctrl) < 0) {
924 wpa_printf(MSG_ERROR,
925 "Could not unlink existing ctrl_iface socket '%s': %s",
926 ctrl, strerror(errno));
929 if (bind(priv->sock, (struct sockaddr *) &addr,
931 wpa_printf(MSG_ERROR, "supp-glb-iface-init: bind(PF_UNIX;%s): %s",
932 ctrl, strerror(errno));
935 wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
936 "ctrl_iface socket '%s'",
939 wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
940 "be in use - cannot override it");
941 wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
948 wpa_printf(MSG_DEBUG, "Using UNIX control socket '%s'", ctrl);
950 if (global->params.ctrl_interface_group) {
951 char *gid_str = global->params.ctrl_interface_group;
956 grp = getgrnam(gid_str);
959 wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d"
960 " (from group name '%s')",
963 /* Group name not found - try to parse this as gid */
964 gid = strtol(gid_str, &endp, 10);
965 if (*gid_str == '\0' || *endp != '\0') {
966 wpa_printf(MSG_ERROR, "CTRL: Invalid group "
970 wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d",
973 if (chown(ctrl, -1, gid) < 0) {
974 wpa_printf(MSG_ERROR,
975 "chown[global_ctrl_interface=%s,gid=%d]: %s",
976 ctrl, (int) gid, strerror(errno));
980 if (chmod(ctrl, S_IRWXU | S_IRWXG) < 0) {
981 wpa_printf(MSG_ERROR,
982 "chmod[global_ctrl_interface=%s]: %s",
983 ctrl, strerror(errno));
987 chmod(ctrl, S_IRWXU);
993 * Make socket non-blocking so that we don't hang forever if
994 * target dies unexpectedly.
996 flags = fcntl(priv->sock, F_GETFL);
999 if (fcntl(priv->sock, F_SETFL, flags) < 0) {
1000 wpa_printf(MSG_INFO, "fcntl(ctrl, O_NONBLOCK): %s",
1002 /* Not fatal, continue on.*/
1006 eloop_register_read_sock(priv->sock,
1007 wpa_supplicant_global_ctrl_iface_receive,
1013 if (priv->sock >= 0) {
1021 struct ctrl_iface_global_priv *
1022 wpa_supplicant_global_ctrl_iface_init(struct wpa_global *global)
1024 struct ctrl_iface_global_priv *priv;
1026 priv = os_zalloc(sizeof(*priv));
1029 dl_list_init(&priv->ctrl_dst);
1030 priv->global = global;
1033 if (global->params.ctrl_interface == NULL)
1036 if (wpas_global_ctrl_iface_open_sock(global, priv) < 0) {
1041 wpa_msg_register_cb(wpa_supplicant_ctrl_iface_msg_cb);
1047 static int wpas_ctrl_iface_global_reinit(struct wpa_global *global,
1048 struct ctrl_iface_global_priv *priv)
1052 if (priv->sock <= 0)
1055 eloop_unregister_read_sock(priv->sock);
1058 res = wpas_global_ctrl_iface_open_sock(global, priv);
1066 wpa_supplicant_global_ctrl_iface_deinit(struct ctrl_iface_global_priv *priv)
1068 struct wpa_ctrl_dst *dst, *prev;
1070 if (priv->sock >= 0) {
1071 eloop_unregister_read_sock(priv->sock);
1074 if (priv->global->params.ctrl_interface)
1075 unlink(priv->global->params.ctrl_interface);
1076 dl_list_for_each_safe(dst, prev, &priv->ctrl_dst, struct wpa_ctrl_dst,