Allow global ctrl_iface monitors
The ATTACH/DETACH mechanism to request event messages from wpa_supplicant can now be used through the global control interface, too. This results in events from all interfaces being delivered through a single monitor socket. "IFNAME=<ifname> " prefix is used on events that are specific to an interface. Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen
parent
89c7ac570b
commit
214e428b42
2 changed files with 111 additions and 35 deletions
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@ -50,12 +50,20 @@ struct ctrl_iface_priv {
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};
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static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
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struct ctrl_iface_global_priv {
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struct wpa_global *global;
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int sock;
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struct dl_list ctrl_dst;
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};
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static void wpa_supplicant_ctrl_iface_send(const char *ifname, int sock,
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struct dl_list *ctrl_dst,
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int level, const char *buf,
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size_t len);
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static int wpa_supplicant_ctrl_iface_attach(struct ctrl_iface_priv *priv,
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static int wpa_supplicant_ctrl_iface_attach(struct dl_list *ctrl_dst,
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struct sockaddr_un *from,
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socklen_t fromlen)
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{
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@ -67,7 +75,7 @@ static int wpa_supplicant_ctrl_iface_attach(struct ctrl_iface_priv *priv,
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os_memcpy(&dst->addr, from, sizeof(struct sockaddr_un));
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dst->addrlen = fromlen;
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dst->debug_level = MSG_INFO;
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dl_list_add(&priv->ctrl_dst, &dst->list);
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dl_list_add(ctrl_dst, &dst->list);
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wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor attached",
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(u8 *) from->sun_path,
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fromlen - offsetof(struct sockaddr_un, sun_path));
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@ -75,13 +83,13 @@ static int wpa_supplicant_ctrl_iface_attach(struct ctrl_iface_priv *priv,
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}
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static int wpa_supplicant_ctrl_iface_detach(struct ctrl_iface_priv *priv,
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static int wpa_supplicant_ctrl_iface_detach(struct dl_list *ctrl_dst,
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struct sockaddr_un *from,
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socklen_t fromlen)
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{
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struct wpa_ctrl_dst *dst;
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dl_list_for_each(dst, &priv->ctrl_dst, struct wpa_ctrl_dst, list) {
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dl_list_for_each(dst, ctrl_dst, struct wpa_ctrl_dst, list) {
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if (fromlen == dst->addrlen &&
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os_memcmp(from->sun_path, dst->addr.sun_path,
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fromlen - offsetof(struct sockaddr_un, sun_path))
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@ -148,14 +156,16 @@ static void wpa_supplicant_ctrl_iface_receive(int sock, void *eloop_ctx,
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buf[res] = '\0';
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if (os_strcmp(buf, "ATTACH") == 0) {
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if (wpa_supplicant_ctrl_iface_attach(priv, &from, fromlen))
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if (wpa_supplicant_ctrl_iface_attach(&priv->ctrl_dst, &from,
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fromlen))
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reply_len = 1;
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else {
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new_attached = 1;
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reply_len = 2;
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}
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} else if (os_strcmp(buf, "DETACH") == 0) {
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if (wpa_supplicant_ctrl_iface_detach(priv, &from, fromlen))
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if (wpa_supplicant_ctrl_iface_detach(&priv->ctrl_dst, &from,
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fromlen))
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reply_len = 1;
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else
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reply_len = 2;
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@ -244,9 +254,25 @@ static void wpa_supplicant_ctrl_iface_msg_cb(void *ctx, int level,
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const char *txt, size_t len)
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{
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struct wpa_supplicant *wpa_s = ctx;
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if (wpa_s == NULL || wpa_s->ctrl_iface == NULL)
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if (wpa_s == NULL)
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return;
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wpa_supplicant_ctrl_iface_send(wpa_s->ctrl_iface, level, txt, len);
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if (wpa_s->global->ctrl_iface) {
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struct ctrl_iface_global_priv *priv = wpa_s->global->ctrl_iface;
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if (!dl_list_empty(&priv->ctrl_dst)) {
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wpa_supplicant_ctrl_iface_send(wpa_s->ifname,
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priv->sock,
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&priv->ctrl_dst,
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level, txt, len);
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}
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}
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if (wpa_s->ctrl_iface == NULL)
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return;
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wpa_supplicant_ctrl_iface_send(NULL, wpa_s->ctrl_iface->sock,
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&wpa_s->ctrl_iface->ctrl_dst,
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level, txt, len);
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}
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@ -519,14 +545,17 @@ free_dst:
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/**
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* wpa_supplicant_ctrl_iface_send - Send a control interface packet to monitors
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* @priv: Pointer to private data from wpa_supplicant_ctrl_iface_init()
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* @ifname: Interface name for global control socket or %NULL
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* @sock: Local socket fd
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* @ctrl_dst: List of attached listeners
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* @level: Priority level of the message
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* @buf: Message data
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* @len: Message length
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*
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* Send a packet to all monitor programs attached to the control interface.
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*/
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static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
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static void wpa_supplicant_ctrl_iface_send(const char *ifname, int sock,
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struct dl_list *ctrl_dst,
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int level, const char *buf,
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size_t len)
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{
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@ -534,32 +563,45 @@ static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
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char levelstr[10];
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int idx, res;
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struct msghdr msg;
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struct iovec io[2];
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struct iovec io[5];
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if (priv->sock < 0 || dl_list_empty(&priv->ctrl_dst))
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if (sock < 0 || dl_list_empty(ctrl_dst))
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return;
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res = os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
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if (res < 0 || (size_t) res >= sizeof(levelstr))
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return;
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io[0].iov_base = levelstr;
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io[0].iov_len = os_strlen(levelstr);
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io[1].iov_base = (char *) buf;
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io[1].iov_len = len;
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idx = 0;
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if (ifname) {
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io[idx].iov_base = "IFNAME=";
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io[idx].iov_len = 7;
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idx++;
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io[idx].iov_base = (char *) ifname;
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io[idx].iov_len = os_strlen(ifname);
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idx++;
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io[idx].iov_base = " ";
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io[idx].iov_len = 1;
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idx++;
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}
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io[idx].iov_base = levelstr;
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io[idx].iov_len = os_strlen(levelstr);
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idx++;
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io[idx].iov_base = (char *) buf;
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io[idx].iov_len = len;
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idx++;
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os_memset(&msg, 0, sizeof(msg));
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msg.msg_iov = io;
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msg.msg_iovlen = 2;
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msg.msg_iovlen = idx;
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idx = 0;
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dl_list_for_each_safe(dst, next, &priv->ctrl_dst, struct wpa_ctrl_dst,
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list) {
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dl_list_for_each_safe(dst, next, ctrl_dst, struct wpa_ctrl_dst, list) {
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if (level >= dst->debug_level) {
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wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor send",
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(u8 *) dst->addr.sun_path, dst->addrlen -
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offsetof(struct sockaddr_un, sun_path));
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msg.msg_name = (void *) &dst->addr;
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msg.msg_namelen = dst->addrlen;
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if (sendmsg(priv->sock, &msg, 0) < 0) {
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if (sendmsg(sock, &msg, 0) < 0) {
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int _errno = errno;
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wpa_printf(MSG_INFO, "CTRL_IFACE monitor[%d]: "
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"%d - %s",
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@ -569,7 +611,7 @@ static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
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(_errno != ENOBUFS && dst->errors > 10) ||
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_errno == ENOENT) {
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wpa_supplicant_ctrl_iface_detach(
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priv, &dst->addr,
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ctrl_dst, &dst->addr,
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dst->addrlen);
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}
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} else
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@ -602,8 +644,8 @@ void wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv *priv)
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if (os_strcmp(buf, "ATTACH") == 0) {
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/* handle ATTACH signal of first monitor interface */
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if (!wpa_supplicant_ctrl_iface_attach(priv, &from,
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fromlen)) {
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if (!wpa_supplicant_ctrl_iface_attach(&priv->ctrl_dst,
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&from, fromlen)) {
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sendto(priv->sock, "OK\n", 3, 0,
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(struct sockaddr *) &from, fromlen);
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/* OK to continue */
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@ -623,21 +665,16 @@ void wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv *priv)
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/* Global ctrl_iface */
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struct ctrl_iface_global_priv {
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struct wpa_global *global;
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int sock;
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};
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static void wpa_supplicant_global_ctrl_iface_receive(int sock, void *eloop_ctx,
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void *sock_ctx)
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{
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struct wpa_global *global = eloop_ctx;
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struct ctrl_iface_global_priv *priv = sock_ctx;
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char buf[256];
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int res;
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struct sockaddr_un from;
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socklen_t fromlen = sizeof(from);
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char *reply;
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char *reply = NULL;
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size_t reply_len;
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res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
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@ -648,16 +685,32 @@ static void wpa_supplicant_global_ctrl_iface_receive(int sock, void *eloop_ctx,
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}
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buf[res] = '\0';
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reply = wpa_supplicant_global_ctrl_iface_process(global, buf,
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&reply_len);
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if (os_strcmp(buf, "ATTACH") == 0) {
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if (wpa_supplicant_ctrl_iface_attach(&priv->ctrl_dst, &from,
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fromlen))
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reply_len = 1;
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else
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reply_len = 2;
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} else if (os_strcmp(buf, "DETACH") == 0) {
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if (wpa_supplicant_ctrl_iface_detach(&priv->ctrl_dst, &from,
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fromlen))
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reply_len = 1;
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else
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reply_len = 2;
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} else {
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reply = wpa_supplicant_global_ctrl_iface_process(global, buf,
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&reply_len);
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}
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if (reply) {
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sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
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fromlen);
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os_free(reply);
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} else if (reply_len) {
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} else if (reply_len == 1) {
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sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from,
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fromlen);
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} else if (reply_len == 2) {
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sendto(sock, "OK\n", 3, 0, (struct sockaddr *) &from, fromlen);
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}
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}
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@ -672,6 +725,7 @@ wpa_supplicant_global_ctrl_iface_init(struct wpa_global *global)
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priv = os_zalloc(sizeof(*priv));
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if (priv == NULL)
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return NULL;
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dl_list_init(&priv->ctrl_dst);
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priv->global = global;
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priv->sock = -1;
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@ -811,7 +865,7 @@ wpa_supplicant_global_ctrl_iface_init(struct wpa_global *global)
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havesock:
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eloop_register_read_sock(priv->sock,
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wpa_supplicant_global_ctrl_iface_receive,
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global, NULL);
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global, priv);
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return priv;
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@ -826,11 +880,16 @@ fail:
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void
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wpa_supplicant_global_ctrl_iface_deinit(struct ctrl_iface_global_priv *priv)
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{
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struct wpa_ctrl_dst *dst, *prev;
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if (priv->sock >= 0) {
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eloop_unregister_read_sock(priv->sock);
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close(priv->sock);
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}
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if (priv->global->params.ctrl_interface)
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unlink(priv->global->params.ctrl_interface);
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dl_list_for_each_safe(dst, prev, &priv->ctrl_dst, struct wpa_ctrl_dst,
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list)
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os_free(dst);
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os_free(priv);
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}
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@ -3567,6 +3567,23 @@ int main(int argc, char *argv[])
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global, strerror(errno));
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return -1;
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}
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if (interactive) {
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mon_conn = wpa_ctrl_open(global);
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if (mon_conn) {
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if (wpa_ctrl_attach(mon_conn) == 0) {
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wpa_cli_attached = 1;
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eloop_register_read_sock(
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wpa_ctrl_get_fd(mon_conn),
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wpa_cli_mon_receive,
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NULL, NULL);
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} else {
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printf("Failed to open monitor "
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"connection through global "
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"control interface\n");
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}
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}
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}
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}
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eloop_register_signal_terminate(wpa_cli_terminate, NULL);
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