/* * UPnP for WPS / internal definitions * Copyright (c) 2000-2003 Intel Corporation * Copyright (c) 2006-2007 Sony Corporation * Copyright (c) 2008-2009 Atheros Communications * Copyright (c) 2009, Jouni Malinen * * See wps_upnp.c for more details on licensing and code history. */ #ifndef WPS_UPNP_I_H #define WPS_UPNP_I_H #include "utils/list.h" #include "http.h" #define UPNP_MULTICAST_ADDRESS "239.255.255.250" /* for UPnP multicasting */ #define UPNP_MULTICAST_PORT 1900 /* UDP port to monitor for UPnP */ /* min subscribe time per UPnP standard */ #define UPNP_SUBSCRIBE_SEC_MIN 1800 /* subscribe time we use */ #define UPNP_SUBSCRIBE_SEC (UPNP_SUBSCRIBE_SEC_MIN + 1) /* "filenames" used in URLs that we service via our "web server": */ #define UPNP_WPS_DEVICE_XML_FILE "wps_device.xml" #define UPNP_WPS_SCPD_XML_FILE "wps_scpd.xml" #define UPNP_WPS_DEVICE_CONTROL_FILE "wps_control" #define UPNP_WPS_DEVICE_EVENT_FILE "wps_event" #define MULTICAST_MAX_READ 1600 /* max bytes we'll read for UPD request */ struct subscription; struct upnp_wps_device_sm; struct wps_registrar; enum advertisement_type_enum { ADVERTISE_UP = 0, ADVERTISE_DOWN = 1, MSEARCH_REPLY = 2 }; /* * Advertisements are broadcast via UDP NOTIFYs, and are also the essence of * the reply to UDP M-SEARCH requests. This struct handles both cases. * * A state machine is needed because a number of variant forms must be sent in * separate packets and spread out in time to avoid congestion. */ struct advertisement_state_machine { /* double-linked list */ struct advertisement_state_machine *next; struct advertisement_state_machine *prev; struct upnp_wps_device_sm *sm; /* parent */ enum advertisement_type_enum type; int state; int nerrors; struct sockaddr_in client; /* for M-SEARCH replies */ }; /* * An address of a subscriber (who may have multiple addresses). We are * supposed to send (via TCP) updates to each subscriber, trying each address * for a subscriber until we find one that seems to work. */ struct subscr_addr { struct dl_list list; char *domain_and_port; /* domain and port part of url */ char *path; /* "filepath" part of url (from "mem") */ struct sockaddr_in saddr; /* address for doing connect */ }; /* * Subscribers to our events are recorded in this struct. This includes a max * of one outgoing connection (sending an "event message") per subscriber. We * also have to age out subscribers unless they renew. */ struct subscription { struct dl_list list; struct upnp_wps_device_sm *sm; /* parent */ time_t timeout_time; /* when to age out the subscription */ unsigned next_subscriber_sequence; /* number our messages */ /* * This uuid identifies the subscription and is randomly generated by * us and given to the subscriber when the subscription is accepted; * and is then included with each event sent to the subscriber. */ u8 uuid[UUID_LEN]; /* Linked list of address alternatives (rotate through on failure) */ struct dl_list addr_list; struct dl_list event_queue; /* Queued event messages. */ struct wps_event_ *current_event; /* non-NULL if being sent (not in q) */ /* Information from SetSelectedRegistrar action */ u8 selected_registrar; u16 dev_password_id; u16 config_methods; struct wps_registrar *reg; }; /* * Our instance data corresponding to one WiFi network interface * (multiple might share the same wired network interface!). * * This is known as an opaque struct declaration to users of the WPS UPnP code. */ struct upnp_wps_device_sm { struct upnp_wps_device_ctx *ctx; /* callback table */ struct wps_context *wps; void *priv; char *root_dir; char *desc_url; int started; /* nonzero if we are active */ char *net_if; /* network interface we use */ char *mac_addr_text; /* mac addr of network i.f. we use */ u8 mac_addr[ETH_ALEN]; /* mac addr of network i.f. we use */ char *ip_addr_text; /* IP address of network i.f. we use */ unsigned ip_addr; /* IP address of network i.f. we use (host order) */ int multicast_sd; /* send multicast messages over this socket */ int ssdp_sd; /* receive discovery UPD packets on socket */ int ssdp_sd_registered; /* nonzero if we must unregister */ unsigned advertise_count; /* how many advertisements done */ struct advertisement_state_machine advertisement; struct advertisement_state_machine *msearch_replies; int n_msearch_replies; /* no. of pending M-SEARCH replies */ int web_port; /* our port that others get xml files from */ struct http_server *web_srv; /* Note: subscriptions are kept in expiry order */ struct dl_list subscriptions; int event_send_all_queued; /* if we are scheduled to send events soon */ char *wlanevent; /* the last WLANEvent data */ /* FIX: maintain separate structures for each UPnP peer */ struct upnp_wps_peer peer; }; /* wps_upnp.c */ void format_date(struct wpabuf *buf); struct subscription * subscription_start(struct upnp_wps_device_sm *sm, const char *callback_urls); struct subscription * subscription_renew(struct upnp_wps_device_sm *sm, const u8 uuid[UUID_LEN]); void subscription_destroy(struct subscription *s); struct subscription * subscription_find(struct upnp_wps_device_sm *sm, const u8 uuid[UUID_LEN]); int send_wpabuf(int fd, struct wpabuf *buf); int get_netif_info(const char *net_if, unsigned *ip_addr, char **ip_addr_text, u8 mac[ETH_ALEN], char **mac_addr_text); /* wps_upnp_ssdp.c */ void msearchreply_state_machine_stop(struct advertisement_state_machine *a); int advertisement_state_machine_start(struct upnp_wps_device_sm *sm); void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm, int send_byebye); void ssdp_listener_stop(struct upnp_wps_device_sm *sm); int ssdp_listener_start(struct upnp_wps_device_sm *sm); int ssdp_listener_open(void); int add_ssdp_network(const char *net_if); int ssdp_open_multicast_sock(u32 ip_addr); int ssdp_open_multicast(struct upnp_wps_device_sm *sm); /* wps_upnp_web.c */ int web_listener_start(struct upnp_wps_device_sm *sm); void web_listener_stop(struct upnp_wps_device_sm *sm); /* wps_upnp_event.c */ int event_add(struct subscription *s, const struct wpabuf *data); void event_delete_all(struct subscription *s); void event_send_all_later(struct upnp_wps_device_sm *sm); void event_send_stop_all(struct upnp_wps_device_sm *sm); /* wps_upnp_ap.c */ int upnp_er_set_selected_registrar(struct wps_registrar *reg, struct subscription *s, const struct wpabuf *msg); void upnp_er_remove_notification(struct subscription *s); #endif /* WPS_UPNP_I_H */