208 lines
7.6 KiB
C
208 lines
7.6 KiB
C
#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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#include <avahi-client/client.h>
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#include <avahi-client/lookup.h>
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#include <avahi-common/simple-watch.h>
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#include <avahi-common/malloc.h>
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#include <avahi-common/error.h>
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#include <avahi-common/thread-watch.h>
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#include "teleportapp.h"
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#include "teleportpeer.h"
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#include "browser.h"
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//static AvahiSimplePoll *simple_poll = NULL;
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static AvahiThreadedPoll *threaded_poll = NULL;
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static AvahiClient *client = NULL;
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static TeleportPeer *peerList = NULL;
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static void resolve_callback(
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AvahiServiceResolver *r,
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AVAHI_GCC_UNUSED AvahiIfIndex interface,
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AVAHI_GCC_UNUSED AvahiProtocol protocol,
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AvahiResolverEvent event,
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const char *name,
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const char *type,
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const char *domain,
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const char *host_name,
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const AvahiAddress *address,
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uint16_t port,
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AvahiStringList *txt,
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AvahiLookupResultFlags flags,
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AVAHI_GCC_UNUSED void* userdata) {
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assert(r);
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/* Called whenever a service has been resolved successfully or timed out */
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switch (event) {
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case AVAHI_RESOLVER_FAILURE:
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fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_client_errno(avahi_service_resolver_get_client(r))));
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break;
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case AVAHI_RESOLVER_FOUND: {
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char a[AVAHI_ADDRESS_STR_MAX], *t;
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fprintf(stderr, "Service '%s' of type '%s' in domain '%s':\n", name, type, domain);
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avahi_address_snprint(a, sizeof(a), address);
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t = avahi_string_list_to_string(txt);
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teleport_peer_add_peer(peerList, g_strdup(name), g_strdup(a), port);
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//teleport_app_add_peer(name, port, a);
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/*fprintf(stderr,
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"\t%s:%u (%s)\n"
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"\tTXT=%s\n"
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"\tcookie is %u\n"
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"\tis_local: %i\n"
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"\tour_own: %i\n"
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"\twide_area: %i\n"
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"\tmulticast: %i\n"
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"\tcached: %i\n",
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host_name, port, a,
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t,
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avahi_string_list_get_service_cookie(txt),
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!!(flags & AVAHI_LOOKUP_RESULT_LOCAL),
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!!(flags & AVAHI_LOOKUP_RESULT_OUR_OWN),
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!!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
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!!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
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!!(flags & AVAHI_LOOKUP_RESULT_CACHED));
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*/
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avahi_free(t);
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}
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}
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avahi_service_resolver_free(r);
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}
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static void browse_callback(
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AvahiServiceBrowser *b,
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AvahiIfIndex interface,
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AvahiProtocol protocol,
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AvahiBrowserEvent event,
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const char *name,
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const char *type,
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const char *domain,
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AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
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void* userdata) {
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AvahiClient *c = userdata;
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assert(b);
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/* Called whenever a new services becomes available on the LAN or is removed from the LAN */
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switch (event) {
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case AVAHI_BROWSER_FAILURE:
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fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_client_errno(avahi_service_browser_get_client(b))));
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avahi_shutdown();
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//avahi_simple_poll_quit(simple_poll);
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return;
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case AVAHI_BROWSER_NEW:
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fprintf(stderr, "(Browser) NEW: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
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if (flags & AVAHI_LOOKUP_RESULT_LOCAL)
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break;
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/* We ignore the returned resolver object. In the callback
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function we free it. If the server is terminated before
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the callback function is called the server will free
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the resolver for us. */
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if (!(avahi_service_resolver_new(c, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, resolve_callback, c)))
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//if (!(avahi_service_resolver_new(c, interface, protocol, name, type, domain, AVAHI_PROTO_INET, 0, resolve_callback, c)))
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fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_client_errno(c)));
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break;
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case AVAHI_BROWSER_REMOVE:
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fprintf(stderr, "(Browser) REMOVE: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
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//teleport_app_remove_peer(name);
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teleport_peer_remove_peer_by_name(peerList, g_strdup(name));
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break;
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case AVAHI_BROWSER_ALL_FOR_NOW:
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case AVAHI_BROWSER_CACHE_EXHAUSTED:
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fprintf(stderr, "(Browser) %s\n", event == AVAHI_BROWSER_CACHE_EXHAUSTED ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW");
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break;
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}
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}
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static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
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assert(c);
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/* Called whenever the client or server state changes */
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if (state == AVAHI_CLIENT_FAILURE) {
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fprintf(stderr, "Server connection failure: %s\n", avahi_strerror(avahi_client_errno(c)));
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avahi_shutdown();
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//avahi_simple_poll_quit(simple_poll);
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}
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}
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/*int run_avahi_service() {
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AvahiClient *client = NULL;
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AvahiServiceBrowser *sb = NULL;
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int error;
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int ret = 1;
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*/
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/* Allocate main loop object */
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/*if (!(simple_poll = avahi_simple_poll_new())) {
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fprintf(stderr, "Failed to create simple poll object.\n");
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goto fail;
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}
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*/
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/* Allocate a new client */
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//client = avahi_client_new(avahi_simple_poll_get(simple_poll), 0, client_callback, NULL, &error);
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/* Check wether creating the client object succeeded */
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/*if (!client) {
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fprintf(stderr, "Failed to create client: %s\n", avahi_strerror(error));
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goto fail;
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}
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*//* Create the service browser */
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/*if (!(sb = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_http._tcp", NULL, 0, browse_callback, client))) {
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fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
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goto fail;
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}
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*/
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/* Run the main loop */
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/*
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avahi_simple_poll_loop(simple_poll);
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ret = 0;
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fail:
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*/
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/* Cleanup things */
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/*
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if (sb)
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avahi_service_browser_free(sb);
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if (client)
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avahi_client_free(client);
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if (simple_poll)
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avahi_simple_poll_free(simple_poll);
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return ret;
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}
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*/
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int run_avahi_service(TeleportPeer *peers) {
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int error;
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peerList = peers;
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/* Call this when the application starts up. */
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if (!(threaded_poll = avahi_threaded_poll_new())) {
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/* do something bad */
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return 1;
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}
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if (!(client = avahi_client_new(avahi_threaded_poll_get(threaded_poll), 0, client_callback, NULL, &error))) {
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fprintf(stderr, "Failed to create client: %s\n", avahi_strerror(error));
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/* do something bad */
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return 1;
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}
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/* create some browsers on the client object here, if you wish */
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//if (!(avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_http._tcp", NULL, 0, browse_callback, client))) {
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if (!(avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_INET, "_http._tcp", NULL, 0, browse_callback, client))) {
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/* so something bad */
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return 1;
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}
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/* Finally, start the event loop thread */
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if (avahi_threaded_poll_start(threaded_poll) < 0) {
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/* do something bad */
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return 1;
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}
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return 0;
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}
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void avahi_shutdown(void) {
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/* Call this when the app shuts down */
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avahi_threaded_poll_stop(threaded_poll);
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avahi_client_free(client);
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avahi_threaded_poll_free(threaded_poll);
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}
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