/*
* WPA Supplicant / UNIX domain socket -based control interface
- * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004-2013, 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include <sys/stat.h>
#include <grp.h>
#include <stddef.h>
+#include <unistd.h>
+#include <fcntl.h>
+#ifdef ANDROID
+#include <cutils/sockets.h>
+#endif /* ANDROID */
#include "utils/common.h"
#include "utils/eloop.h"
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct ctrl_iface_priv *priv = sock_ctx;
- char buf[256];
+ char buf[4096];
int res;
struct sockaddr_un from;
socklen_t fromlen = sizeof(from);
char *buf, *dir = NULL, *gid_str = NULL;
struct group *grp;
char *endp;
+ int flags;
priv = os_zalloc(sizeof(*priv));
if (priv == NULL)
buf = os_strdup(wpa_s->conf->ctrl_interface);
if (buf == NULL)
goto fail;
+#ifdef ANDROID
+ os_snprintf(addr.sun_path, sizeof(addr.sun_path), "wpa_%s",
+ wpa_s->conf->ctrl_interface);
+ priv->sock = android_get_control_socket(addr.sun_path);
+ if (priv->sock >= 0)
+ goto havesock;
+#endif /* ANDROID */
if (os_strncmp(buf, "DIR=", 4) == 0) {
dir = buf + 4;
gid_str = os_strstr(dir, " GROUP=");
}
}
+#ifdef ANDROID
+ /*
+ * wpa_supplicant is started from /init.*.rc on Android and that seems
+ * to be using umask 0077 which would leave the control interface
+ * directory without group access. This breaks things since Wi-Fi
+ * framework assumes that this directory can be accessed by other
+ * applications in the wifi group. Fix this by adding group access even
+ * if umask value would prevent this.
+ */
+ if (chmod(dir, S_IRWXU | S_IRWXG) < 0) {
+ wpa_printf(MSG_ERROR, "CTRL: Could not chmod directory: %s",
+ strerror(errno));
+ /* Try to continue anyway */
+ }
+#endif /* ANDROID */
+
if (gid_str) {
grp = getgrnam(gid_str);
if (grp) {
}
os_memset(&addr, 0, sizeof(addr));
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
addr.sun_len = sizeof(addr);
#endif /* __FreeBSD__ */
addr.sun_family = AF_UNIX;
}
if (bind(priv->sock, (struct sockaddr *) &addr,
sizeof(addr)) < 0) {
- perror("bind(PF_UNIX)");
+ perror("supp-ctrl-iface-init: bind(PF_UNIX)");
goto fail;
}
wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
}
os_free(fname);
+#ifdef ANDROID
+havesock:
+#endif /* ANDROID */
+
+ /*
+ * Make socket non-blocking so that we don't hang forever if
+ * target dies unexpectedly.
+ */
+ flags = fcntl(priv->sock, F_GETFL);
+ if (flags >= 0) {
+ flags |= O_NONBLOCK;
+ if (fcntl(priv->sock, F_SETFL, flags) < 0) {
+ perror("fcntl(ctrl, O_NONBLOCK)");
+ /* Not fatal, continue on.*/
+ }
+ }
+
eloop_register_read_sock(priv->sock, wpa_supplicant_ctrl_iface_receive,
wpa_s, priv);
wpa_msg_register_cb(wpa_supplicant_ctrl_iface_msg_cb);
"%d - %s",
idx, errno, strerror(errno));
dst->errors++;
- if (dst->errors > 10 || _errno == ENOENT) {
+ if (dst->errors > 1000 ||
+ (_errno != ENOBUFS && dst->errors > 10) ||
+ _errno == ENOENT) {
wpa_supplicant_ctrl_iface_detach(
priv, &dst->addr,
dst->addrlen);
if (global->params.ctrl_interface == NULL)
return priv;
+#ifdef ANDROID
+ priv->sock = android_get_control_socket(global->params.ctrl_interface);
+ if (priv->sock >= 0)
+ goto havesock;
+#endif /* ANDROID */
+
wpa_printf(MSG_DEBUG, "Global control interface '%s'",
global->params.ctrl_interface);
}
os_memset(&addr, 0, sizeof(addr));
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
addr.sun_len = sizeof(addr);
#endif /* __FreeBSD__ */
addr.sun_family = AF_UNIX;
os_strlcpy(addr.sun_path, global->params.ctrl_interface,
sizeof(addr.sun_path));
if (bind(priv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- perror("bind(PF_UNIX)");
+ perror("supp-global-ctrl-iface-init (will try fixup): "
+ "bind(PF_UNIX)");
if (connect(priv->sock, (struct sockaddr *) &addr,
sizeof(addr)) < 0) {
wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
}
if (bind(priv->sock, (struct sockaddr *) &addr,
sizeof(addr)) < 0) {
- perror("bind(PF_UNIX)");
+ perror("supp-glb-iface-init: bind(PF_UNIX)");
goto fail;
}
wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
}
}
+ if (global->params.ctrl_interface_group) {
+ char *gid_str = global->params.ctrl_interface_group;
+ gid_t gid = 0;
+ struct group *grp;
+ char *endp;
+
+ grp = getgrnam(gid_str);
+ if (grp) {
+ gid = grp->gr_gid;
+ wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d"
+ " (from group name '%s')",
+ (int) gid, gid_str);
+ } else {
+ /* Group name not found - try to parse this as gid */
+ gid = strtol(gid_str, &endp, 10);
+ if (*gid_str == '\0' || *endp != '\0') {
+ wpa_printf(MSG_ERROR, "CTRL: Invalid group "
+ "'%s'", gid_str);
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d",
+ (int) gid);
+ }
+ if (chown(global->params.ctrl_interface, -1, gid) < 0) {
+ perror("chown[global_ctrl_interface/ifname]");
+ goto fail;
+ }
+
+ if (chmod(global->params.ctrl_interface, S_IRWXU | S_IRWXG) < 0)
+ {
+ perror("chmod[global_ctrl_interface/ifname]");
+ goto fail;
+ }
+ }
+
+#ifdef ANDROID
+havesock:
+#endif /* ANDROID */
eloop_register_read_sock(priv->sock,
wpa_supplicant_global_ctrl_iface_receive,
global, NULL);
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