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authorJouni Malinen <j@w1.fi>2008-02-28 01:34:43 (GMT)
committerJouni Malinen <jm@jm.kir.nu>2008-02-28 01:34:43 (GMT)
commit6fc6879bd55a394f807cbbe927df736c190cb8ab (patch)
treecdf50da0c58f21510a808d53502a060d911ff243 /wpa_supplicant/wpa_priv.c
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Re-initialize hostapd/wpa_supplicant git repository based on 0.6.3 release
Diffstat (limited to 'wpa_supplicant/wpa_priv.c')
-rw-r--r--wpa_supplicant/wpa_priv.c1140
1 files changed, 1140 insertions, 0 deletions
diff --git a/wpa_supplicant/wpa_priv.c b/wpa_supplicant/wpa_priv.c
new file mode 100644
index 0000000..4a8d363
--- /dev/null
+++ b/wpa_supplicant/wpa_priv.c
@@ -0,0 +1,1140 @@
+/*
+ * WPA Supplicant / privileged helper program
+ * Copyright (c) 2007, 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"
+#ifdef __linux__
+#include <fcntl.h>
+#endif /* __linux__ */
+#include <sys/un.h>
+#include <sys/stat.h>
+
+#include "common.h"
+#include "eloop.h"
+#include "version.h"
+#include "drivers/driver.h"
+#include "l2_packet/l2_packet.h"
+#include "privsep_commands.h"
+#include "ieee802_11_defs.h"
+
+#ifndef ETH_P_EAPOL
+#define ETH_P_EAPOL 0x888e
+#endif
+
+#ifndef ETH_P_RSN_PREAUTH
+#define ETH_P_RSN_PREAUTH 0x88c7
+#endif
+
+
+struct wpa_priv_interface {
+ struct wpa_priv_interface *next;
+ char *driver_name;
+ char *ifname;
+ char *sock_name;
+ int fd;
+
+ struct wpa_driver_ops *driver;
+ void *drv_priv;
+ struct sockaddr_un drv_addr;
+ int wpas_registered;
+
+ /* TODO: add support for multiple l2 connections */
+ struct l2_packet_data *l2;
+ struct sockaddr_un l2_addr;
+};
+
+
+static void wpa_priv_cmd_register(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ if (iface->drv_priv) {
+ wpa_printf(MSG_DEBUG, "Cleaning up forgotten driver instance");
+ if (iface->driver->set_wpa)
+ iface->driver->set_wpa(iface->drv_priv, 0);
+ if (iface->driver->deinit)
+ iface->driver->deinit(iface->drv_priv);
+ iface->drv_priv = NULL;
+ iface->wpas_registered = 0;
+ }
+
+ if (iface->l2) {
+ wpa_printf(MSG_DEBUG, "Cleaning up forgotten l2_packet "
+ "instance");
+ l2_packet_deinit(iface->l2);
+ iface->l2 = NULL;
+ }
+
+ if (iface->driver->init == NULL)
+ return;
+
+ iface->drv_priv = iface->driver->init(iface, iface->ifname);
+ if (iface->drv_priv == NULL) {
+ wpa_printf(MSG_DEBUG, "Failed to initialize driver wrapper");
+ return;
+ }
+
+ wpa_printf(MSG_DEBUG, "Driver wrapper '%s' initialized for interface "
+ "'%s'", iface->driver_name, iface->ifname);
+
+ os_memcpy(&iface->drv_addr, from, sizeof(iface->drv_addr));
+ iface->wpas_registered = 1;
+
+ if (iface->driver->set_param &&
+ iface->driver->set_param(iface->drv_priv, NULL) < 0) {
+ wpa_printf(MSG_ERROR, "Driver interface rejected param");
+ }
+
+ if (iface->driver->set_wpa)
+ iface->driver->set_wpa(iface->drv_priv, 1);
+}
+
+
+static void wpa_priv_cmd_unregister(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ if (iface->drv_priv) {
+ if (iface->driver->set_wpa)
+ iface->driver->set_wpa(iface->drv_priv, 0);
+ if (iface->driver->deinit)
+ iface->driver->deinit(iface->drv_priv);
+ iface->drv_priv = NULL;
+ iface->wpas_registered = 0;
+ }
+}
+
+
+static void wpa_priv_cmd_set_wpa(struct wpa_priv_interface *iface,
+ char *buf, size_t len)
+{
+ if (iface->drv_priv == NULL || len != sizeof(int))
+ return;
+
+ if (iface->driver->set_wpa)
+ iface->driver->set_wpa(iface->drv_priv, *((int *) buf));
+}
+
+
+static void wpa_priv_cmd_scan(struct wpa_priv_interface *iface,
+ char *buf, size_t len)
+{
+ if (iface->drv_priv == NULL)
+ return;
+
+ if (iface->driver->scan)
+ iface->driver->scan(iface->drv_priv, len ? (u8 *) buf : NULL,
+ len);
+}
+
+
+static void wpa_priv_get_scan_results2(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ struct wpa_scan_results *res;
+ u8 *buf = NULL, *pos, *end;
+ int val;
+ size_t i;
+
+ res = iface->driver->get_scan_results2(iface->drv_priv);
+ if (res == NULL)
+ goto fail;
+
+ buf = os_malloc(60000);
+ if (buf == NULL)
+ goto fail;
+ pos = buf;
+ end = buf + 60000;
+ val = res->num;
+ os_memcpy(pos, &val, sizeof(int));
+ pos += sizeof(int);
+
+ for (i = 0; i < res->num; i++) {
+ struct wpa_scan_res *r = res->res[i];
+ val = sizeof(*r) + r->ie_len;
+ if (end - pos < (int) sizeof(int) + val)
+ break;
+ os_memcpy(pos, &val, sizeof(int));
+ pos += sizeof(int);
+ os_memcpy(pos, r, val);
+ pos += val;
+ }
+
+ sendto(iface->fd, buf, pos - buf, 0, (struct sockaddr *) from,
+ sizeof(*from));
+
+ os_free(buf);
+ os_free(res);
+ return;
+
+fail:
+ os_free(buf);
+ os_free(res);
+ sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
+}
+
+
+static void wpa_priv_send_old_scan_results(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+#define SCAN_AP_LIMIT 128
+ int i, res, val;
+ struct wpa_scan_result *results = NULL;
+ u8 *buf = NULL, *pos, *end;
+ struct wpa_scan_res nres;
+
+ results = os_malloc(SCAN_AP_LIMIT * sizeof(*results));
+ if (results == NULL)
+ goto fail;
+
+ res = iface->driver->get_scan_results(iface->drv_priv, results,
+ SCAN_AP_LIMIT);
+ if (res < 0 || res > SCAN_AP_LIMIT)
+ goto fail;
+
+ buf = os_malloc(60000);
+ if (buf == NULL)
+ goto fail;
+ pos = buf;
+ end = buf + 60000;
+ os_memcpy(pos, &res, sizeof(int));
+ pos += sizeof(int);
+
+ os_memset(&nres, 0, sizeof(nres));
+ for (i = 0; i < res; i++) {
+ struct wpa_scan_result *r = &results[i];
+ size_t ie_len;
+
+ ie_len = 2 + r->ssid_len + r->rsn_ie_len + r->wpa_ie_len;
+ if (r->maxrate)
+ ie_len += 3;
+ if (r->mdie_present)
+ ie_len += 5;
+
+ val = sizeof(nres) + ie_len;
+ if (end - pos < (int) sizeof(int) + val)
+ break;
+ os_memcpy(pos, &val, sizeof(int));
+ pos += sizeof(int);
+
+ os_memcpy(nres.bssid, r->bssid, ETH_ALEN);
+ nres.freq = r->freq;
+ nres.caps = r->caps;
+ nres.qual = r->qual;
+ nres.noise = r->noise;
+ nres.level = r->level;
+ nres.tsf = r->tsf;
+ nres.ie_len = ie_len;
+
+ os_memcpy(pos, &nres, sizeof(nres));
+ pos += sizeof(nres);
+
+ /* SSID IE */
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = r->ssid_len;
+ os_memcpy(pos, r->ssid, r->ssid_len);
+ pos += r->ssid_len;
+
+ if (r->maxrate) {
+ /* Fake Supported Rate IE to include max rate */
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = 1;
+ *pos++ = r->maxrate;
+ }
+
+ if (r->rsn_ie_len) {
+ os_memcpy(pos, r->rsn_ie, r->rsn_ie_len);
+ pos += r->rsn_ie_len;
+ }
+
+ if (r->mdie_present) {
+ os_memcpy(pos, r->mdie, 5);
+ pos += 5;
+ }
+
+ if (r->wpa_ie_len) {
+ os_memcpy(pos, r->wpa_ie, r->wpa_ie_len);
+ pos += r->wpa_ie_len;
+ }
+ }
+
+ sendto(iface->fd, buf, pos - buf, 0, (struct sockaddr *) from,
+ sizeof(*from));
+
+ os_free(buf);
+ os_free(results);
+ return;
+
+fail:
+ os_free(buf);
+ os_free(results);
+ sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
+}
+
+
+static void wpa_priv_cmd_get_scan_results(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ if (iface->drv_priv == NULL)
+ return;
+
+ if (iface->driver->get_scan_results2)
+ wpa_priv_get_scan_results2(iface, from);
+ else if (iface->driver->get_scan_results)
+ wpa_priv_send_old_scan_results(iface, from);
+ else
+ sendto(iface->fd, "", 0, 0, (struct sockaddr *) from,
+ sizeof(*from));
+}
+
+
+static void wpa_priv_cmd_associate(struct wpa_priv_interface *iface,
+ void *buf, size_t len)
+{
+ struct wpa_driver_associate_params params;
+ struct privsep_cmd_associate *assoc;
+ u8 *bssid;
+ int res;
+
+ if (iface->drv_priv == NULL || iface->driver->associate == NULL)
+ return;
+
+ if (len < sizeof(*assoc)) {
+ wpa_printf(MSG_DEBUG, "Invalid association request");
+ return;
+ }
+
+ assoc = buf;
+ if (sizeof(*assoc) + assoc->wpa_ie_len > len) {
+ wpa_printf(MSG_DEBUG, "Association request overflow");
+ return;
+ }
+
+ os_memset(&params, 0, sizeof(params));
+ bssid = assoc->bssid;
+ if (bssid[0] | bssid[1] | bssid[2] | bssid[3] | bssid[4] | bssid[5])
+ params.bssid = bssid;
+ params.ssid = assoc->ssid;
+ if (assoc->ssid_len > 32)
+ return;
+ params.ssid_len = assoc->ssid_len;
+ params.freq = assoc->freq;
+ if (assoc->wpa_ie_len) {
+ params.wpa_ie = (u8 *) (assoc + 1);
+ params.wpa_ie_len = assoc->wpa_ie_len;
+ }
+ params.pairwise_suite = assoc->pairwise_suite;
+ params.group_suite = assoc->group_suite;
+ params.key_mgmt_suite = assoc->key_mgmt_suite;
+ params.auth_alg = assoc->auth_alg;
+ params.mode = assoc->mode;
+
+ res = iface->driver->associate(iface->drv_priv, &params);
+ wpa_printf(MSG_DEBUG, "drv->associate: res=%d", res);
+}
+
+
+static void wpa_priv_cmd_get_bssid(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ u8 bssid[ETH_ALEN];
+
+ if (iface->drv_priv == NULL)
+ goto fail;
+
+ if (iface->driver->get_bssid == NULL ||
+ iface->driver->get_bssid(iface->drv_priv, bssid) < 0)
+ goto fail;
+
+ sendto(iface->fd, bssid, ETH_ALEN, 0, (struct sockaddr *) from,
+ sizeof(*from));
+ return;
+
+fail:
+ sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
+}
+
+
+static void wpa_priv_cmd_get_ssid(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ u8 ssid[sizeof(int) + 32];
+ int res;
+
+ if (iface->drv_priv == NULL)
+ goto fail;
+
+ if (iface->driver->get_ssid == NULL)
+ goto fail;
+
+ res = iface->driver->get_ssid(iface->drv_priv, &ssid[sizeof(int)]);
+ if (res < 0 || res > 32)
+ goto fail;
+ os_memcpy(ssid, &res, sizeof(int));
+
+ sendto(iface->fd, ssid, sizeof(ssid), 0, (struct sockaddr *) from,
+ sizeof(*from));
+ return;
+
+fail:
+ sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
+}
+
+
+static void wpa_priv_cmd_set_key(struct wpa_priv_interface *iface,
+ void *buf, size_t len)
+{
+ struct privsep_cmd_set_key *params;
+ int res;
+
+ if (iface->drv_priv == NULL || iface->driver->set_key == NULL)
+ return;
+
+ if (len != sizeof(*params)) {
+ wpa_printf(MSG_DEBUG, "Invalid set_key request");
+ return;
+ }
+
+ params = buf;
+
+ res = iface->driver->set_key(iface->drv_priv, params->alg,
+ params->addr, params->key_idx,
+ params->set_tx,
+ params->seq_len ? params->seq : NULL,
+ params->seq_len,
+ params->key_len ? params->key : NULL,
+ params->key_len);
+ wpa_printf(MSG_DEBUG, "drv->set_key: res=%d", res);
+}
+
+
+static void wpa_priv_cmd_get_capa(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ struct wpa_driver_capa capa;
+
+ if (iface->drv_priv == NULL)
+ goto fail;
+
+ if (iface->driver->get_capa == NULL ||
+ iface->driver->get_capa(iface->drv_priv, &capa) < 0)
+ goto fail;
+
+ sendto(iface->fd, &capa, sizeof(capa), 0, (struct sockaddr *) from,
+ sizeof(*from));
+ return;
+
+fail:
+ sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
+}
+
+
+static void wpa_priv_l2_rx(void *ctx, const u8 *src_addr, const u8 *buf,
+ size_t len)
+{
+ struct wpa_priv_interface *iface = ctx;
+ struct msghdr msg;
+ struct iovec io[2];
+
+ io[0].iov_base = (u8 *) src_addr;
+ io[0].iov_len = ETH_ALEN;
+ io[1].iov_base = (u8 *) buf;
+ io[1].iov_len = len;
+
+ os_memset(&msg, 0, sizeof(msg));
+ msg.msg_iov = io;
+ msg.msg_iovlen = 2;
+ msg.msg_name = &iface->l2_addr;
+ msg.msg_namelen = sizeof(iface->l2_addr);
+
+ if (sendmsg(iface->fd, &msg, 0) < 0) {
+ perror("sendmsg(l2 rx)");
+ }
+}
+
+
+static void wpa_priv_cmd_l2_register(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from,
+ void *buf, size_t len)
+{
+ int *reg_cmd = buf;
+ u8 own_addr[ETH_ALEN];
+ int res;
+ u16 proto;
+
+ if (len != 2 * sizeof(int)) {
+ wpa_printf(MSG_DEBUG, "Invalid l2_register length %lu",
+ (unsigned long) len);
+ return;
+ }
+
+ proto = reg_cmd[0];
+ if (proto != ETH_P_EAPOL && proto != ETH_P_RSN_PREAUTH) {
+ wpa_printf(MSG_DEBUG, "Refused l2_packet connection for "
+ "ethertype 0x%x", proto);
+ return;
+ }
+
+ if (iface->l2) {
+ wpa_printf(MSG_DEBUG, "Cleaning up forgotten l2_packet "
+ "instance");
+ l2_packet_deinit(iface->l2);
+ iface->l2 = NULL;
+ }
+
+ os_memcpy(&iface->l2_addr, from, sizeof(iface->l2_addr));
+
+ iface->l2 = l2_packet_init(iface->ifname, NULL, proto,
+ wpa_priv_l2_rx, iface, reg_cmd[1]);
+ if (iface->l2 == NULL) {
+ wpa_printf(MSG_DEBUG, "Failed to initialize l2_packet "
+ "instance for protocol %d", proto);
+ return;
+ }
+
+ if (l2_packet_get_own_addr(iface->l2, own_addr) < 0) {
+ wpa_printf(MSG_DEBUG, "Failed to get own address from "
+ "l2_packet");
+ l2_packet_deinit(iface->l2);
+ iface->l2 = NULL;
+ return;
+ }
+
+ res = sendto(iface->fd, own_addr, ETH_ALEN, 0,
+ (struct sockaddr *) from, sizeof(*from));
+ wpa_printf(MSG_DEBUG, "L2 registration: res=%d", res);
+}
+
+
+static void wpa_priv_cmd_l2_unregister(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ if (iface->l2) {
+ l2_packet_deinit(iface->l2);
+ iface->l2 = NULL;
+ }
+}
+
+
+static void wpa_priv_cmd_l2_notify_auth_start(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from)
+{
+ if (iface->l2)
+ l2_packet_notify_auth_start(iface->l2);
+}
+
+
+static void wpa_priv_cmd_l2_send(struct wpa_priv_interface *iface,
+ struct sockaddr_un *from,
+ void *buf, size_t len)
+{
+ u8 *dst_addr;
+ u16 proto;
+ int res;
+
+ if (iface->l2 == NULL)
+ return;
+
+ if (len < ETH_ALEN + 2) {
+ wpa_printf(MSG_DEBUG, "Too short L2 send packet (len=%lu)",
+ (unsigned long) len);
+ return;
+ }
+
+ dst_addr = buf;
+ os_memcpy(&proto, buf + ETH_ALEN, 2);
+
+ if (proto != ETH_P_EAPOL && proto != ETH_P_RSN_PREAUTH) {
+ wpa_printf(MSG_DEBUG, "Refused l2_packet send for ethertype "
+ "0x%x", proto);
+ return;
+ }
+
+ res = l2_packet_send(iface->l2, dst_addr, proto, buf + ETH_ALEN + 2,
+ len - ETH_ALEN - 2);
+ wpa_printf(MSG_DEBUG, "L2 send: res=%d", res);
+}
+
+
+static void wpa_priv_receive(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct wpa_priv_interface *iface = eloop_ctx;
+ char buf[2000];
+ void *cmd_buf;
+ size_t cmd_len;
+ int res, cmd;
+ struct sockaddr_un from;
+ socklen_t fromlen = sizeof(from);
+
+ res = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *) &from,
+ &fromlen);
+ if (res < 0) {
+ perror("recvfrom");
+ return;
+ }
+
+ if (res < (int) sizeof(int)) {
+ wpa_printf(MSG_DEBUG, "Too short command (len=%d)", res);
+ return;
+ }
+
+ os_memcpy(&cmd, buf, sizeof(int));
+ wpa_printf(MSG_DEBUG, "Command %d for interface %s",
+ cmd, iface->ifname);
+ cmd_buf = &buf[sizeof(int)];
+ cmd_len = res - sizeof(int);
+
+ switch (cmd) {
+ case PRIVSEP_CMD_REGISTER:
+ wpa_priv_cmd_register(iface, &from);
+ break;
+ case PRIVSEP_CMD_UNREGISTER:
+ wpa_priv_cmd_unregister(iface, &from);
+ break;
+ case PRIVSEP_CMD_SET_WPA:
+ wpa_priv_cmd_set_wpa(iface, cmd_buf, cmd_len);
+ break;
+ case PRIVSEP_CMD_SCAN:
+ wpa_priv_cmd_scan(iface, cmd_buf, cmd_len);
+ break;
+ case PRIVSEP_CMD_GET_SCAN_RESULTS:
+ wpa_priv_cmd_get_scan_results(iface, &from);
+ break;
+ case PRIVSEP_CMD_ASSOCIATE:
+ wpa_priv_cmd_associate(iface, cmd_buf, cmd_len);
+ break;
+ case PRIVSEP_CMD_GET_BSSID:
+ wpa_priv_cmd_get_bssid(iface, &from);
+ break;
+ case PRIVSEP_CMD_GET_SSID:
+ wpa_priv_cmd_get_ssid(iface, &from);
+ break;
+ case PRIVSEP_CMD_SET_KEY:
+ wpa_priv_cmd_set_key(iface, cmd_buf, cmd_len);
+ break;
+ case PRIVSEP_CMD_GET_CAPA:
+ wpa_priv_cmd_get_capa(iface, &from);
+ break;
+ case PRIVSEP_CMD_L2_REGISTER:
+ wpa_priv_cmd_l2_register(iface, &from, cmd_buf, cmd_len);
+ break;
+ case PRIVSEP_CMD_L2_UNREGISTER:
+ wpa_priv_cmd_l2_unregister(iface, &from);
+ break;
+ case PRIVSEP_CMD_L2_NOTIFY_AUTH_START:
+ wpa_priv_cmd_l2_notify_auth_start(iface, &from);
+ break;
+ case PRIVSEP_CMD_L2_SEND:
+ wpa_priv_cmd_l2_send(iface, &from, cmd_buf, cmd_len);
+ break;
+ }
+}
+
+
+static void wpa_priv_interface_deinit(struct wpa_priv_interface *iface)
+{
+ if (iface->drv_priv && iface->driver->deinit)
+ iface->driver->deinit(iface->drv_priv);
+
+ if (iface->fd >= 0) {
+ eloop_unregister_read_sock(iface->fd);
+ close(iface->fd);
+ unlink(iface->sock_name);
+ }
+
+ if (iface->l2)
+ l2_packet_deinit(iface->l2);
+
+ os_free(iface->ifname);
+ os_free(iface->driver_name);
+ os_free(iface->sock_name);
+ os_free(iface);
+}
+
+
+extern struct wpa_driver_ops *wpa_supplicant_drivers[];
+
+static struct wpa_priv_interface *
+wpa_priv_interface_init(const char *dir, const char *params)
+{
+ struct wpa_priv_interface *iface;
+ char *pos;
+ size_t len;
+ struct sockaddr_un addr;
+ int i;
+
+ pos = os_strchr(params, ':');
+ if (pos == NULL)
+ return NULL;
+
+ iface = os_zalloc(sizeof(*iface));
+ if (iface == NULL)
+ return NULL;
+ iface->fd = -1;
+
+ len = pos - params;
+ iface->driver_name = os_malloc(len + 1);
+ if (iface->driver_name == NULL) {
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+ }
+ os_memcpy(iface->driver_name, params, len);
+ iface->driver_name[len] = '\0';
+
+ for (i = 0; wpa_supplicant_drivers[i]; i++) {
+ if (os_strcmp(iface->driver_name,
+ wpa_supplicant_drivers[i]->name) == 0) {
+ iface->driver = wpa_supplicant_drivers[i];
+ break;
+ }
+ }
+ if (iface->driver == NULL) {
+ wpa_printf(MSG_ERROR, "Unsupported driver '%s'",
+ iface->driver_name);
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+ }
+
+ pos++;
+ iface->ifname = os_strdup(pos);
+ if (iface->ifname == NULL) {
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+ }
+
+ len = os_strlen(dir) + 1 + os_strlen(iface->ifname);
+ iface->sock_name = os_malloc(len + 1);
+ if (iface->sock_name == NULL) {
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+ }
+
+ os_snprintf(iface->sock_name, len + 1, "%s/%s", dir, iface->ifname);
+ if (os_strlen(iface->sock_name) >= sizeof(addr.sun_path)) {
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+ }
+
+ iface->fd = socket(PF_UNIX, SOCK_DGRAM, 0);
+ if (iface->fd < 0) {
+ perror("socket(PF_UNIX)");
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+ }
+
+ os_memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ os_strlcpy(addr.sun_path, iface->sock_name, sizeof(addr.sun_path));
+
+ if (bind(iface->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ wpa_printf(MSG_DEBUG, "bind(PF_UNIX) failed: %s",
+ strerror(errno));
+ if (connect(iface->fd, (struct sockaddr *) &addr,
+ sizeof(addr)) < 0) {
+ wpa_printf(MSG_DEBUG, "Socket exists, but does not "
+ "allow connections - assuming it was "
+ "leftover from forced program termination");
+ if (unlink(iface->sock_name) < 0) {
+ perror("unlink[ctrl_iface]");
+ wpa_printf(MSG_ERROR, "Could not unlink "
+ "existing ctrl_iface socket '%s'",
+ iface->sock_name);
+ goto fail;
+ }
+ if (bind(iface->fd, (struct sockaddr *) &addr,
+ sizeof(addr)) < 0) {
+ perror("bind(PF_UNIX)");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
+ "socket '%s'", iface->sock_name);
+ } else {
+ wpa_printf(MSG_INFO, "Socket exists and seems to be "
+ "in use - cannot override it");
+ wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
+ "not used anymore", iface->sock_name);
+ goto fail;
+ }
+ }
+
+ if (chmod(iface->sock_name, S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
+ perror("chmod");
+ goto fail;
+ }
+
+ eloop_register_read_sock(iface->fd, wpa_priv_receive, iface, NULL);
+
+ return iface;
+
+fail:
+ wpa_priv_interface_deinit(iface);
+ return NULL;
+}
+
+
+static int wpa_priv_send_event(struct wpa_priv_interface *iface, int event,
+ const void *data, size_t data_len)
+{
+ struct msghdr msg;
+ struct iovec io[2];
+
+ io[0].iov_base = &event;
+ io[0].iov_len = sizeof(event);
+ io[1].iov_base = (u8 *) data;
+ io[1].iov_len = data_len;
+
+ os_memset(&msg, 0, sizeof(msg));
+ msg.msg_iov = io;
+ msg.msg_iovlen = data ? 2 : 1;
+ msg.msg_name = &iface->drv_addr;
+ msg.msg_namelen = sizeof(iface->drv_addr);
+
+ if (sendmsg(iface->fd, &msg, 0) < 0) {
+ perror("sendmsg(wpas_socket)");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static void wpa_priv_send_assoc(struct wpa_priv_interface *iface, int event,
+ union wpa_event_data *data)
+{
+ size_t buflen = 3 * sizeof(int);
+ u8 *buf, *pos;
+ int len;
+
+ if (data) {
+ buflen += data->assoc_info.req_ies_len +
+ data->assoc_info.resp_ies_len +
+ data->assoc_info.beacon_ies_len;
+ }
+
+ buf = os_malloc(buflen);
+ if (buf == NULL)
+ return;
+
+ pos = buf;
+
+ if (data && data->assoc_info.req_ies) {
+ len = data->assoc_info.req_ies_len;
+ os_memcpy(pos, &len, sizeof(int));
+ pos += sizeof(int);
+ os_memcpy(pos, data->assoc_info.req_ies, len);
+ pos += len;
+ } else {
+ len = 0;
+ os_memcpy(pos, &len, sizeof(int));
+ pos += sizeof(int);
+ }
+
+ if (data && data->assoc_info.resp_ies) {
+ len = data->assoc_info.resp_ies_len;
+ os_memcpy(pos, &len, sizeof(int));
+ pos += sizeof(int);
+ os_memcpy(pos, data->assoc_info.resp_ies, len);
+ pos += len;
+ } else {
+ len = 0;
+ os_memcpy(pos, &len, sizeof(int));
+ pos += sizeof(int);
+ }
+
+ if (data && data->assoc_info.beacon_ies) {
+ len = data->assoc_info.beacon_ies_len;
+ os_memcpy(pos, &len, sizeof(int));
+ pos += sizeof(int);
+ os_memcpy(pos, data->assoc_info.beacon_ies, len);
+ pos += len;
+ } else {
+ len = 0;
+ os_memcpy(pos, &len, sizeof(int));
+ pos += sizeof(int);
+ }
+
+ wpa_priv_send_event(iface, event, buf, buflen);
+
+ os_free(buf);
+}
+
+
+static void wpa_priv_send_interface_status(struct wpa_priv_interface *iface,
+ union wpa_event_data *data)
+{
+ int ievent;
+ size_t len, maxlen;
+ u8 *buf;
+ char *ifname;
+
+ if (data == NULL)
+ return;
+
+ ievent = data->interface_status.ievent;
+ maxlen = sizeof(data->interface_status.ifname);
+ ifname = data->interface_status.ifname;
+ for (len = 0; len < maxlen && ifname[len]; len++)
+ ;
+
+ buf = os_malloc(sizeof(int) + len);
+ if (buf == NULL)
+ return;
+
+ os_memcpy(buf, &ievent, sizeof(int));
+ os_memcpy(buf + sizeof(int), ifname, len);
+
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_INTERFACE_STATUS,
+ buf, sizeof(int) + len);
+
+ os_free(buf);
+
+}
+
+
+static void wpa_priv_send_ft_response(struct wpa_priv_interface *iface,
+ union wpa_event_data *data)
+{
+ size_t len;
+ u8 *buf, *pos;
+
+ if (data == NULL || data->ft_ies.ies == NULL)
+ return;
+
+ len = sizeof(int) + ETH_ALEN + data->ft_ies.ies_len;
+ buf = os_malloc(len);
+ if (buf == NULL)
+ return;
+
+ pos = buf;
+ os_memcpy(pos, &data->ft_ies.ft_action, sizeof(int));
+ pos += sizeof(int);
+ os_memcpy(pos, data->ft_ies.target_ap, ETH_ALEN);
+ pos += ETH_ALEN;
+ os_memcpy(pos, data->ft_ies.ies, data->ft_ies.ies_len);
+
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_FT_RESPONSE, buf, len);
+
+ os_free(buf);
+
+}
+
+
+void wpa_supplicant_event(void *ctx, wpa_event_type event,
+ union wpa_event_data *data)
+{
+ struct wpa_priv_interface *iface = ctx;
+
+ wpa_printf(MSG_DEBUG, "%s - event=%d", __func__, event);
+
+ if (!iface->wpas_registered) {
+ wpa_printf(MSG_DEBUG, "Driver event received, but "
+ "wpa_supplicant not registered");
+ return;
+ }
+
+ switch (event) {
+ case EVENT_ASSOC:
+ wpa_priv_send_assoc(iface, PRIVSEP_EVENT_ASSOC, data);
+ break;
+ case EVENT_DISASSOC:
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_DISASSOC, NULL, 0);
+ break;
+ case EVENT_ASSOCINFO:
+ if (data == NULL)
+ return;
+ wpa_priv_send_assoc(iface, PRIVSEP_EVENT_ASSOCINFO, data);
+ break;
+ case EVENT_MICHAEL_MIC_FAILURE:
+ if (data == NULL)
+ return;
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_MICHAEL_MIC_FAILURE,
+ &data->michael_mic_failure.unicast,
+ sizeof(int));
+ break;
+ case EVENT_SCAN_RESULTS:
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_SCAN_RESULTS, NULL,
+ 0);
+ break;
+ case EVENT_INTERFACE_STATUS:
+ wpa_priv_send_interface_status(iface, data);
+ break;
+ case EVENT_PMKID_CANDIDATE:
+ if (data == NULL)
+ return;
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_PMKID_CANDIDATE,
+ &data->pmkid_candidate,
+ sizeof(struct pmkid_candidate));
+ break;
+ case EVENT_STKSTART:
+ if (data == NULL)
+ return;
+ wpa_priv_send_event(iface, PRIVSEP_EVENT_STKSTART,
+ &data->stkstart.peer, ETH_ALEN);
+ break;
+ case EVENT_FT_RESPONSE:
+ wpa_priv_send_ft_response(iface, data);
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "Unsupported driver event %d - TODO",
+ event);
+ break;
+ }
+}
+
+
+void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
+ const u8 *buf, size_t len)
+{
+ struct wpa_priv_interface *iface = ctx;
+ struct msghdr msg;
+ struct iovec io[3];
+ int event = PRIVSEP_EVENT_RX_EAPOL;
+
+ wpa_printf(MSG_DEBUG, "RX EAPOL from driver");
+ io[0].iov_base = &event;
+ io[0].iov_len = sizeof(event);
+ io[1].iov_base = (u8 *) src_addr;
+ io[1].iov_len = ETH_ALEN;
+ io[2].iov_base = (u8 *) buf;
+ io[2].iov_len = len;
+
+ os_memset(&msg, 0, sizeof(msg));
+ msg.msg_iov = io;
+ msg.msg_iovlen = 3;
+ msg.msg_name = &iface->drv_addr;
+ msg.msg_namelen = sizeof(iface->drv_addr);
+
+ if (sendmsg(iface->fd, &msg, 0) < 0)
+ perror("sendmsg(wpas_socket)");
+}
+
+static void wpa_priv_terminate(int sig, void *eloop_ctx, void *signal_ctx)
+{
+ wpa_printf(MSG_DEBUG, "wpa_priv termination requested");
+ eloop_terminate();
+}
+
+
+static void wpa_priv_fd_workaround(void)
+{
+#ifdef __linux__
+ int s, i;
+ /* When started from pcmcia-cs scripts, wpa_supplicant might start with
+ * fd 0, 1, and 2 closed. This will cause some issues because many
+ * places in wpa_supplicant are still printing out to stdout. As a
+ * workaround, make sure that fd's 0, 1, and 2 are not used for other
+ * sockets. */
+ for (i = 0; i < 3; i++) {
+ s = open("/dev/null", O_RDWR);
+ if (s > 2) {
+ close(s);
+ break;
+ }
+ }
+#endif /* __linux__ */
+}
+
+
+static void usage(void)
+{
+ printf("wpa_priv v" VERSION_STR "\n"
+ "Copyright (c) 2007, Jouni Malinen <j@w1.fi> and contributors\n"
+ "\n"
+ "usage:\n"
+ " wpa_priv [-Bdd] [-P<pid file>] <driver:ifname> "
+ "[driver:ifname ...]\n");
+}
+
+
+extern int wpa_debug_level;
+
+int main(int argc, char *argv[])
+{
+ int c, i;
+ int ret = -1;
+ char *pid_file = NULL;
+ int daemonize = 0;
+ char *ctrl_dir = "/var/run/wpa_priv";
+ struct wpa_priv_interface *interfaces = NULL, *iface;
+
+ if (os_program_init())
+ return -1;
+
+ wpa_priv_fd_workaround();
+
+ for (;;) {
+ c = getopt(argc, argv, "Bc:dP:");
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'B':
+ daemonize++;
+ break;
+ case 'c':
+ ctrl_dir = optarg;
+ break;
+ case 'd':
+ wpa_debug_level--;
+ break;
+ case 'P':
+ pid_file = os_rel2abs_path(optarg);
+ break;
+ default:
+ usage();
+ goto out;
+ }
+ }
+
+ if (optind >= argc) {
+ usage();
+ goto out;
+ }
+
+ wpa_printf(MSG_DEBUG, "wpa_priv control directory: '%s'", ctrl_dir);
+
+ if (eloop_init(NULL)) {
+ wpa_printf(MSG_ERROR, "Failed to initialize event loop");
+ goto out;
+ }
+
+ for (i = optind; i < argc; i++) {
+ wpa_printf(MSG_DEBUG, "Adding driver:interface %s", argv[i]);
+ iface = wpa_priv_interface_init(ctrl_dir, argv[i]);
+ if (iface == NULL)
+ goto out;
+ iface->next = interfaces;
+ interfaces = iface;
+ }
+
+ if (daemonize && os_daemonize(pid_file))
+ goto out;
+
+ eloop_register_signal_terminate(wpa_priv_terminate, NULL);
+ eloop_run();
+
+ ret = 0;
+
+out:
+ iface = interfaces;
+ while (iface) {
+ struct wpa_priv_interface *prev = iface;
+ iface = iface->next;
+ wpa_priv_interface_deinit(prev);
+ }
+
+ eloop_destroy();
+
+ os_daemonize_terminate(pid_file);
+ os_free(pid_file);
+ os_program_deinit();
+
+ return ret;
+}