* Copyright (c) 2000-2003 Intel Corporation
* Copyright (c) 2006-2007 Sony Corporation
* Copyright (c) 2008-2009 Atheros Communications
- * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2009-2013, Jouni Malinen <j@w1.fi>
*
* See wps_upnp.c for more details on licensing and code history.
*/
#include <fcntl.h>
#include <sys/ioctl.h>
#include <net/route.h>
+#ifdef __linux__
+#include <net/if.h>
+#endif /* __linux__ */
#include "common.h"
#include "uuid.h"
#define UPNP_CACHE_SEC (UPNP_CACHE_SEC_MIN + 1) /* cache time we use */
#define UPNP_CACHE_SEC_MIN 1800 /* min cachable time per UPnP standard */
#define UPNP_ADVERTISE_REPEAT 2 /* no more than 3 */
-#define MULTICAST_MAX_READ 1600 /* max bytes we'll read for UPD request */
#define MAX_MSEARCH 20 /* max simultaneous M-SEARCH replies ongoing */
#define SSDP_TARGET "239.0.0.0"
#define SSDP_NETMASK "255.0.0.0"
}
-/* No. of chars excluding trailing whitespace */
-static int line_length_stripped(const char *l)
-{
- const char *lp = l + line_length(l);
- while (lp > l && !isgraph(lp[-1]))
- lp--;
- return lp - l;
-}
-
-
-static int str_starts(const char *str, const char *start)
-{
- return os_strncmp(str, start, os_strlen(start)) == 0;
-}
-
-
/***************************************************************************
* Advertisements.
* These are multicast to the world to tell them we are here.
* Note: next_advertisement is shared code with msearchreply_* functions
*/
static struct wpabuf *
-next_advertisement(struct advertisement_state_machine *a, int *islast)
+next_advertisement(struct upnp_wps_device_sm *sm,
+ struct advertisement_state_machine *a, int *islast)
{
struct wpabuf *msg;
char *NTString = "";
char uuid_string[80];
+ struct upnp_wps_device_interface *iface;
*islast = 0;
- uuid_bin2str(a->sm->wps->uuid, uuid_string, sizeof(uuid_string));
+ iface = dl_list_first(&sm->interfaces,
+ struct upnp_wps_device_interface, list);
+ if (!iface)
+ return NULL;
+ uuid_bin2str(iface->wps->uuid, uuid_string, sizeof(uuid_string));
msg = wpabuf_alloc(800); /* more than big enough */
if (msg == NULL)
- goto fail;
+ return NULL;
switch (a->type) {
case ADVERTISE_UP:
case ADVERTISE_DOWN:
if (a->type != ADVERTISE_DOWN) {
/* Where others may get our XML files from */
wpabuf_printf(msg, "LOCATION: http://%s:%d/%s\r\n",
- a->sm->ip_addr_text, a->sm->web_port,
+ sm->ip_addr_text, sm->web_port,
UPNP_WPS_DEVICE_XML_FILE);
}
*islast = 1;
return msg;
-
-fail:
- wpabuf_free(msg);
- return NULL;
}
/**
* advertisement_state_machine_stop - Stop SSDP advertisements
* @sm: WPS UPnP state machine from upnp_wps_device_init()
+ * @send_byebye: Send byebye advertisement messages immediately
*/
-void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm)
+void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm,
+ int send_byebye)
{
+ struct advertisement_state_machine *a = &sm->advertisement;
+ int islast = 0;
+ struct wpabuf *msg;
+ struct sockaddr_in dest;
+
eloop_cancel_timeout(advertisement_state_machine_handler, NULL, sm);
+ if (!send_byebye || sm->multicast_sd < 0)
+ return;
+
+ a->type = ADVERTISE_DOWN;
+ a->state = 0;
+
+ os_memset(&dest, 0, sizeof(dest));
+ dest.sin_family = AF_INET;
+ dest.sin_addr.s_addr = inet_addr(UPNP_MULTICAST_ADDRESS);
+ dest.sin_port = htons(UPNP_MULTICAST_PORT);
+
+ while (!islast) {
+ msg = next_advertisement(sm, a, &islast);
+ if (msg == NULL)
+ break;
+ if (sendto(sm->multicast_sd, wpabuf_head(msg), wpabuf_len(msg),
+ 0, (struct sockaddr *) &dest, sizeof(dest)) < 0) {
+ wpa_printf(MSG_INFO, "WPS UPnP: Advertisement sendto "
+ "failed: %d (%s)", errno, strerror(errno));
+ }
+ wpabuf_free(msg);
+ a->state++;
+ }
}
*/
wpa_printf(MSG_MSGDUMP, "WPS UPnP: Advertisement state=%d", a->state);
- msg = next_advertisement(a, &islast);
+ msg = next_advertisement(sm, a, &islast);
if (msg == NULL)
return;
* (see notes above)
*/
next_timeout_msec = 0;
- os_get_random((void *) &r, sizeof(r));
+ if (os_get_random((void *) &r, sizeof(r)) < 0)
+ r = 32768;
next_timeout_sec = UPNP_CACHE_SEC / 4 +
(((UPNP_CACHE_SEC / 4) * r) >> 16);
sm->advertise_count++;
struct advertisement_state_machine *a = &sm->advertisement;
int next_timeout_msec;
- advertisement_state_machine_stop(sm);
+ advertisement_state_machine_stop(sm, 0);
/*
* Start out advertising down, this automatically switches
*/
a->type = ADVERTISE_DOWN;
a->state = 0;
- a->sm = sm;
/* (other fields not used here) */
/* First timeout should be random interval < 100 msec */
* They are sent in response to a UDP M-SEARCH packet.
**************************************************************************/
-static void msearchreply_state_machine_handler(void *eloop_data,
- void *user_ctx);
-
-
/**
* msearchreply_state_machine_stop - Stop M-SEARCH reply state machine
* @a: Selected advertisement/reply state
*/
void msearchreply_state_machine_stop(struct advertisement_state_machine *a)
{
- struct upnp_wps_device_sm *sm = a->sm;
wpa_printf(MSG_DEBUG, "WPS UPnP: M-SEARCH stop");
- if (a->next == a) {
- sm->msearch_replies = NULL;
- } else {
- if (sm->msearch_replies == a)
- sm->msearch_replies = a->next;
- a->next->prev = a->prev;
- a->prev->next = a->next;
- }
+ dl_list_del(&a->list);
os_free(a);
- sm->n_msearch_replies--;
}
void *user_ctx)
{
struct advertisement_state_machine *a = user_ctx;
- struct upnp_wps_device_sm *sm = a->sm;
+ struct upnp_wps_device_sm *sm = eloop_data;
struct wpabuf *msg;
int next_timeout_msec = 100;
int next_timeout_sec = 0;
wpa_printf(MSG_MSGDUMP, "WPS UPnP: M-SEARCH reply state=%d (%s:%d)",
a->state, inet_ntoa(a->client.sin_addr),
ntohs(a->client.sin_port));
- msg = next_advertisement(a, &islast);
+ msg = next_advertisement(sm, a, &islast);
if (msg == NULL)
return;
struct advertisement_state_machine *a;
int next_timeout_sec;
int next_timeout_msec;
+ int replies;
+ replies = dl_list_len(&sm->msearch_replies);
wpa_printf(MSG_DEBUG, "WPS UPnP: M-SEARCH reply start (%d "
- "outstanding)", sm->n_msearch_replies);
- if (sm->n_msearch_replies >= MAX_MSEARCH) {
+ "outstanding)", replies);
+ if (replies >= MAX_MSEARCH) {
wpa_printf(MSG_INFO, "WPS UPnP: Too many outstanding "
"M-SEARCH replies");
return;
return;
a->type = MSEARCH_REPLY;
a->state = 0;
- a->sm = sm;
- os_memcpy(&a->client, client, sizeof(client));
+ os_memcpy(&a->client, client, sizeof(*client));
/* Wait time depending on MX value */
next_timeout_msec = (1000 * mx * (os_random() & 0xFF)) >> 8;
next_timeout_sec = next_timeout_msec / 1000;
goto fail;
}
/* Remember for future cleanup */
- if (sm->msearch_replies) {
- a->next = sm->msearch_replies;
- a->prev = a->next->prev;
- a->prev->next = a;
- a->next->prev = a;
- } else {
- sm->msearch_replies = a->next = a->prev = a;
- }
- sm->n_msearch_replies++;
+ dl_list_add(&sm->msearch_replies, &a->list);
return;
fail:
static void ssdp_parse_msearch(struct upnp_wps_device_sm *sm,
struct sockaddr_in *client, const char *data)
{
+#ifndef CONFIG_NO_STDOUT_DEBUG
const char *start = data;
- const char *end;
+#endif /* CONFIG_NO_STDOUT_DEBUG */
int got_host = 0;
int got_st = 0, st_match = 0;
int got_man = 0;
/* Parse remaining lines */
for (; *data != '\0'; data += line_length(data)) {
- end = data + line_length_stripped(data);
if (token_eq(data, "host")) {
/* The host line indicates who the packet
* is addressed to... but do we really care?
}
if (str_starts(data, "uuid:")) {
char uuid_string[80];
+ struct upnp_wps_device_interface *iface;
+ iface = dl_list_first(
+ &sm->interfaces,
+ struct upnp_wps_device_interface,
+ list);
+ if (!iface)
+ continue;
data += os_strlen("uuid:");
- uuid_bin2str(sm->wps->uuid, uuid_string,
+ uuid_bin2str(iface->wps->uuid, uuid_string,
sizeof(uuid_string));
if (str_starts(data, uuid_string))
st_match = 1;
* ssdp_listener_stop - Stop SSDP listered
* @sm: WPS UPnP state machine from upnp_wps_device_init()
*
- * This function stops the SSDP listerner that was started by calling
+ * This function stops the SSDP listener that was started by calling
* ssdp_listener_start().
*/
void ssdp_listener_stop(struct upnp_wps_device_sm *sm)
}
-/**
- * ssdp_listener_start - Set up for receiving discovery (UDP) packets
- * @sm: WPS UPnP state machine from upnp_wps_device_init()
- * Returns: 0 on success, -1 on failure
- *
- * The SSDP listerner is stopped by calling ssdp_listener_stop().
- */
-int ssdp_listener_start(struct upnp_wps_device_sm *sm)
+int ssdp_listener_open(void)
{
- int sd = -1;
struct sockaddr_in addr;
struct ip_mreq mcast_addr;
int on = 1;
/* per UPnP spec, keep IP packet time to live (TTL) small */
unsigned char ttl = 4;
+ int sd;
- sm->ssdp_sd = sd = socket(AF_INET, SOCK_DGRAM, 0);
- if (sd < 0)
- goto fail;
- if (fcntl(sd, F_SETFL, O_NONBLOCK) != 0)
- goto fail;
- if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
+ sd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (sd < 0 ||
+ fcntl(sd, F_SETFL, O_NONBLOCK) != 0 ||
+ setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
goto fail;
os_memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
mcast_addr.imr_interface.s_addr = htonl(INADDR_ANY);
mcast_addr.imr_multiaddr.s_addr = inet_addr(UPNP_MULTICAST_ADDRESS);
if (setsockopt(sd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
- (char *) &mcast_addr, sizeof(mcast_addr)))
- goto fail;
- if (setsockopt(sd, IPPROTO_IP, IP_MULTICAST_TTL,
+ (char *) &mcast_addr, sizeof(mcast_addr)) ||
+ setsockopt(sd, IPPROTO_IP, IP_MULTICAST_TTL,
&ttl, sizeof(ttl)))
goto fail;
- if (eloop_register_sock(sd, EVENT_TYPE_READ, ssdp_listener_handler,
- NULL, sm))
+
+ return sd;
+
+fail:
+ if (sd >= 0)
+ close(sd);
+ return -1;
+}
+
+
+/**
+ * ssdp_listener_start - Set up for receiving discovery (UDP) packets
+ * @sm: WPS UPnP state machine from upnp_wps_device_init()
+ * Returns: 0 on success, -1 on failure
+ *
+ * The SSDP listener is stopped by calling ssdp_listener_stop().
+ */
+int ssdp_listener_start(struct upnp_wps_device_sm *sm)
+{
+ sm->ssdp_sd = ssdp_listener_open();
+
+ if (eloop_register_sock(sm->ssdp_sd, EVENT_TYPE_READ,
+ ssdp_listener_handler, NULL, sm))
goto fail;
sm->ssdp_sd_registered = 1;
return 0;
* once after booting up, but it does not hurt to call this more frequently
* "to be safe".
*/
-int add_ssdp_network(char *net_if)
+int add_ssdp_network(const char *net_if)
{
#ifdef __linux__
int ret = -1;
if (sock < 0)
goto fail;
- rt.rt_dev = net_if;
- sin = (struct sockaddr_in *) &rt.rt_dst;
+ rt.rt_dev = (char *) net_if;
+ sin = aliasing_hide_typecast(&rt.rt_dst, struct sockaddr_in);
sin->sin_family = AF_INET;
sin->sin_port = 0;
sin->sin_addr.s_addr = inet_addr(SSDP_TARGET);
- sin = (struct sockaddr_in *) &rt.rt_genmask;
+ sin = aliasing_hide_typecast(&rt.rt_genmask, struct sockaddr_in);
sin->sin_family = AF_INET;
sin->sin_port = 0;
sin->sin_addr.s_addr = inet_addr(SSDP_NETMASK);
}
-/**
- * ssdp_open_multicast - Open socket for sending multicast SSDP messages
- * @sm: WPS UPnP state machine from upnp_wps_device_init()
- * Returns: 0 on success, -1 on failure
- */
-int ssdp_open_multicast(struct upnp_wps_device_sm *sm)
+int ssdp_open_multicast_sock(u32 ip_addr, const char *forced_ifname)
{
- int sd = -1;
+ int sd;
/* per UPnP-arch-DeviceArchitecture, 1. Discovery, keep IP packet
* time to live (TTL) small */
unsigned char ttl = 4;
- sm->multicast_sd = sd = socket(AF_INET, SOCK_DGRAM, 0);
+ sd = socket(AF_INET, SOCK_DGRAM, 0);
if (sd < 0)
return -1;
+ if (forced_ifname) {
+#ifdef __linux__
+ struct ifreq req;
+ os_memset(&req, 0, sizeof(req));
+ os_strlcpy(req.ifr_name, forced_ifname, sizeof(req.ifr_name));
+ if (setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, &req,
+ sizeof(req)) < 0) {
+ wpa_printf(MSG_INFO, "WPS UPnP: Failed to bind "
+ "multicast socket to ifname %s: %s",
+ forced_ifname, strerror(errno));
+ close(sd);
+ return -1;
+ }
+#endif /* __linux__ */
+ }
+
#if 0 /* maybe ok if we sometimes block on writes */
- if (fcntl(sd, F_SETFL, O_NONBLOCK) != 0)
+ if (fcntl(sd, F_SETFL, O_NONBLOCK) != 0) {
+ close(sd);
return -1;
+ }
#endif
if (setsockopt(sd, IPPROTO_IP, IP_MULTICAST_IF,
- &sm->ip_addr, sizeof(sm->ip_addr)))
+ &ip_addr, sizeof(ip_addr))) {
+ wpa_printf(MSG_DEBUG, "WPS: setsockopt(IP_MULTICAST_IF) %x: "
+ "%d (%s)", ip_addr, errno, strerror(errno));
+ close(sd);
return -1;
+ }
if (setsockopt(sd, IPPROTO_IP, IP_MULTICAST_TTL,
- &ttl, sizeof(ttl)))
+ &ttl, sizeof(ttl))) {
+ wpa_printf(MSG_DEBUG, "WPS: setsockopt(IP_MULTICAST_TTL): "
+ "%d (%s)", errno, strerror(errno));
+ close(sd);
return -1;
+ }
#if 0 /* not needed, because we don't receive using multicast_sd */
{
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = inet_addr(UPNP_MULTICAST_ADDRESS);
- mreq.imr_interface.s_addr = sm->ip_addr;
+ mreq.imr_interface.s_addr = ip_addr;
wpa_printf(MSG_DEBUG, "WPS UPnP: Multicast addr 0x%x if addr "
"0x%x",
mreq.imr_multiaddr.s_addr,
"WPS UPnP: setsockopt "
"IP_ADD_MEMBERSHIP errno %d (%s)",
errno, strerror(errno));
+ close(sd);
return -1;
}
}
* which aids debugging I suppose but isn't really necessary?
*/
+ return sd;
+}
+
+
+/**
+ * ssdp_open_multicast - Open socket for sending multicast SSDP messages
+ * @sm: WPS UPnP state machine from upnp_wps_device_init()
+ * Returns: 0 on success, -1 on failure
+ */
+int ssdp_open_multicast(struct upnp_wps_device_sm *sm)
+{
+ sm->multicast_sd = ssdp_open_multicast_sock(sm->ip_addr, NULL);
+ if (sm->multicast_sd < 0)
+ return -1;
return 0;
}
projects / mech_eap.git / blobdiff