180 lines
6.2 KiB
C
180 lines
6.2 KiB
C
/*
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* UPnP for WPS / internal definitions
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* Copyright (c) 2000-2003 Intel Corporation
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* Copyright (c) 2006-2007 Sony Corporation
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* Copyright (c) 2008-2009 Atheros Communications
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* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
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*
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* See wps_upnp.c for more details on licensing and code history.
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*/
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#ifndef WPS_UPNP_I_H
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#define WPS_UPNP_I_H
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#include "utils/list.h"
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#include "http.h"
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#define UPNP_MULTICAST_ADDRESS "239.255.255.250" /* for UPnP multicasting */
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#define UPNP_MULTICAST_PORT 1900 /* UDP port to monitor for UPnP */
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/* min subscribe time per UPnP standard */
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#define UPNP_SUBSCRIBE_SEC_MIN 1800
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/* subscribe time we use */
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#define UPNP_SUBSCRIBE_SEC (UPNP_SUBSCRIBE_SEC_MIN + 1)
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/* "filenames" used in URLs that we service via our "web server": */
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#define UPNP_WPS_DEVICE_XML_FILE "wps_device.xml"
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#define UPNP_WPS_SCPD_XML_FILE "wps_scpd.xml"
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#define UPNP_WPS_DEVICE_CONTROL_FILE "wps_control"
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#define UPNP_WPS_DEVICE_EVENT_FILE "wps_event"
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#define MULTICAST_MAX_READ 1600 /* max bytes we'll read for UPD request */
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struct upnp_wps_device_sm;
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struct wps_registrar;
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enum advertisement_type_enum {
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ADVERTISE_UP = 0,
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ADVERTISE_DOWN = 1,
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MSEARCH_REPLY = 2
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};
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/*
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* Advertisements are broadcast via UDP NOTIFYs, and are also the essence of
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* the reply to UDP M-SEARCH requests. This struct handles both cases.
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*
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* A state machine is needed because a number of variant forms must be sent in
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* separate packets and spread out in time to avoid congestion.
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*/
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struct advertisement_state_machine {
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struct dl_list list;
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enum advertisement_type_enum type;
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int state;
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int nerrors;
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struct sockaddr_in client; /* for M-SEARCH replies */
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};
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/*
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* An address of a subscriber (who may have multiple addresses). We are
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* supposed to send (via TCP) updates to each subscriber, trying each address
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* for a subscriber until we find one that seems to work.
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*/
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struct subscr_addr {
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struct dl_list list;
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char *domain_and_port; /* domain and port part of url */
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char *path; /* "filepath" part of url (from "mem") */
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struct sockaddr_in saddr; /* address for doing connect */
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};
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/*
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* Subscribers to our events are recorded in this struct. This includes a max
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* of one outgoing connection (sending an "event message") per subscriber. We
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* also have to age out subscribers unless they renew.
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*/
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struct subscription {
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struct dl_list list;
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struct upnp_wps_device_sm *sm; /* parent */
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time_t timeout_time; /* when to age out the subscription */
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unsigned next_subscriber_sequence; /* number our messages */
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/*
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* This uuid identifies the subscription and is randomly generated by
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* us and given to the subscriber when the subscription is accepted;
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* and is then included with each event sent to the subscriber.
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*/
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u8 uuid[UUID_LEN];
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/* Linked list of address alternatives (rotate through on failure) */
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struct dl_list addr_list;
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struct dl_list event_queue; /* Queued event messages. */
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struct wps_event_ *current_event; /* non-NULL if being sent (not in q)
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*/
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/* Information from SetSelectedRegistrar action */
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u8 selected_registrar;
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u16 dev_password_id;
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u16 config_methods;
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struct wps_registrar *reg;
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};
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/*
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* Our instance data corresponding to one WiFi network interface
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* (multiple might share the same wired network interface!).
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*
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* This is known as an opaque struct declaration to users of the WPS UPnP code.
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*/
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struct upnp_wps_device_sm {
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struct upnp_wps_device_ctx *ctx; /* callback table */
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struct wps_context *wps;
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void *priv;
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char *root_dir;
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char *desc_url;
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int started; /* nonzero if we are active */
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char *mac_addr_text; /* mac addr of network i.f. we use */
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u8 mac_addr[ETH_ALEN]; /* mac addr of network i.f. we use */
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char *ip_addr_text; /* IP address of network i.f. we use */
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unsigned ip_addr; /* IP address of network i.f. we use (host order) */
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int multicast_sd; /* send multicast messages over this socket */
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int ssdp_sd; /* receive discovery UPD packets on socket */
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int ssdp_sd_registered; /* nonzero if we must unregister */
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unsigned advertise_count; /* how many advertisements done */
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struct advertisement_state_machine advertisement;
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struct dl_list msearch_replies;
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int web_port; /* our port that others get xml files from */
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struct http_server *web_srv;
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/* Note: subscriptions are kept in expiry order */
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struct dl_list subscriptions;
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int event_send_all_queued; /* if we are scheduled to send events soon
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*/
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char *wlanevent; /* the last WLANEvent data */
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/* FIX: maintain separate structures for each UPnP peer */
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struct upnp_wps_peer peer;
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};
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/* wps_upnp.c */
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void format_date(struct wpabuf *buf);
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struct subscription * subscription_start(struct upnp_wps_device_sm *sm,
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const char *callback_urls);
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struct subscription * subscription_renew(struct upnp_wps_device_sm *sm,
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const u8 uuid[UUID_LEN]);
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void subscription_destroy(struct subscription *s);
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struct subscription * subscription_find(struct upnp_wps_device_sm *sm,
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const u8 uuid[UUID_LEN]);
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int send_wpabuf(int fd, struct wpabuf *buf);
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int get_netif_info(const char *net_if, unsigned *ip_addr, char **ip_addr_text,
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u8 mac[ETH_ALEN], char **mac_addr_text);
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/* wps_upnp_ssdp.c */
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void msearchreply_state_machine_stop(struct advertisement_state_machine *a);
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int advertisement_state_machine_start(struct upnp_wps_device_sm *sm);
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void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm,
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int send_byebye);
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void ssdp_listener_stop(struct upnp_wps_device_sm *sm);
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int ssdp_listener_start(struct upnp_wps_device_sm *sm);
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int ssdp_listener_open(void);
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int add_ssdp_network(const char *net_if);
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int ssdp_open_multicast_sock(u32 ip_addr);
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int ssdp_open_multicast(struct upnp_wps_device_sm *sm);
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/* wps_upnp_web.c */
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int web_listener_start(struct upnp_wps_device_sm *sm);
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void web_listener_stop(struct upnp_wps_device_sm *sm);
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/* wps_upnp_event.c */
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int event_add(struct subscription *s, const struct wpabuf *data);
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void event_delete_all(struct subscription *s);
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void event_send_all_later(struct upnp_wps_device_sm *sm);
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void event_send_stop_all(struct upnp_wps_device_sm *sm);
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/* wps_upnp_ap.c */
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int upnp_er_set_selected_registrar(struct wps_registrar *reg,
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struct subscription *s,
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const struct wpabuf *msg);
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void upnp_er_remove_notification(struct subscription *s);
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#endif /* WPS_UPNP_I_H */
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