void _mdns_retrieve_buddy_icon(BonjourBuddy* buddy) {
PurpleConnection *conn = purple_account_get_connection(buddy->account);
BonjourData *bd = conn->proto_data;
AvahiSessionImplData *session_idata = bd->dns_sd_data->mdns_impl_data;
AvahiBuddyImplData *idata = buddy->mdns_impl_data;
gchar *name;
g_return_if_fail(idata != NULL);
if (idata->buddy_icon_rec_browser != NULL)
avahi_record_browser_free(idata->buddy_icon_rec_browser);
purple_debug_info("bonjour", "Retrieving buddy icon for '%s'.\n", buddy->name);
name = g_strdup_printf("%s." ICHAT_SERVICE "local", buddy->name);
idata->buddy_icon_rec_browser = avahi_record_browser_new(session_idata->client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC, name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_NULL, 0,
_buddy_icon_record_cb, buddy);
g_free(name);
if (!idata->buddy_icon_rec_browser) {
purple_debug_error("bonjour",
"Unable to initialize buddy icon record browser. Error: %s\n.",
avahi_strerror(avahi_client_errno(session_idata->client)));
}
}
static void
_buddy_icon_record_cb(AvahiRecordBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol,
AvahiBrowserEvent event, const char *name, uint16_t clazz, uint16_t type,
const void *rdata, size_t size, AvahiLookupResultFlags flags, void *userdata) {
BonjourBuddy *buddy = userdata;
AvahiBuddyImplData *idata = buddy->mdns_impl_data;
switch (event) {
case AVAHI_BROWSER_CACHE_EXHAUSTED:
case AVAHI_BROWSER_ALL_FOR_NOW:
/* Ignore these "meta" informational events */
return;
case AVAHI_BROWSER_NEW:
bonjour_buddy_got_buddy_icon(buddy, rdata, size);
break;
case AVAHI_BROWSER_REMOVE:
case AVAHI_BROWSER_FAILURE:
purple_debug_error("bonjour", "Error retrieving buddy icon record: %s\n",
avahi_strerror(avahi_client_errno(avahi_record_browser_get_client(b))));
break;
}
/* Stop listening */
avahi_record_browser_free(b);
if (idata->buddy_icon_rec_browser == b) {
idata->buddy_icon_rec_browser = NULL;
}
}
static void resolve_callback(
AvahiRecordBrowser *r,
AVAHI_GCC_UNUSED AvahiIfIndex interface,
AVAHI_GCC_UNUSED AvahiProtocol protocol,
AvahiBrowserEvent event,
const char *name,
uint16_t clazz,
uint16_t *domain,
const void *rdata,
size_t size,
AvahiLookupResultFlags flags,
AVAHI_GCC_UNUSED void* userdata) {
assert(r);
/* Called whenever a service has been resolved successfully or timed out */
switch (event) {
case AVAHI_RESOLVER_FAILURE:
fprintf(stderr, "(Resolver) Failed to resolve service '%s': %s\n",
name, avahi_strerror(avahi_client_errno(avahi_record_browser_get_client(r))));
break;
case AVAHI_RESOLVER_FOUND: {
char /*a[AVAHI_ADDRESS_STR_MAX], */ *t;
fprintf(stderr, "Service '%s'':\n", name);
/* avahi_address_snprint(a, sizeof(a), address);
t = avahi_string_list_to_string(txt);
fprintf(stderr,
"\t%s:%u (%s)\n"
"\tTXT=%s\n"
"\tcookie is %u\n"
"\tis_local: %i\n"
"\tour_own: %i\n"
"\twide_area: %i\n"
"\tmulticast: %i\n"
"\tcached: %i\n",
host_name, port, a,
t,
avahi_string_list_get_service_cookie(txt),
!!(flags & AVAHI_LOOKUP_RESULT_LOCAL),
!!(flags & AVAHI_LOOKUP_RESULT_OUR_OWN),
!!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
!!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
!!(flags & AVAHI_LOOKUP_RESULT_CACHED)); */
avahi_free(t);
}
default:
fprintf(stderr, "Unknown avahi resolvers event\n");
}
avahi_record_browser_free(r);
}
void QxtMDNS::cancelLookup()
{
if (qxt_d().recordbrowser != NULL)
avahi_record_browser_free(qxt_d().recordbrowser);
if (qxt_d().client != NULL)
avahi_client_free(qxt_d().client);
deleteLater();
}
static void
browse_record_callback(AvahiRecordBrowser *b, AvahiIfIndex intf, AvahiProtocol proto,
AvahiBrowserEvent event, const char *hostname, uint16_t clazz, uint16_t type,
const void *rdata, size_t size, AvahiLookupResultFlags flags, void *userdata)
{
struct mdns_record_browser *rb_data;
AvahiAddress addr;
char address[AVAHI_ADDRESS_STR_MAX];
int family;
int ret;
rb_data = (struct mdns_record_browser *)userdata;
if (event == AVAHI_BROWSER_CACHE_EXHAUSTED)
DPRINTF(E_DBG, L_MDNS, "Avahi Record Browser (%s, proto %d): no more results (CACHE_EXHAUSTED)\n", hostname, proto);
else if (event == AVAHI_BROWSER_ALL_FOR_NOW)
DPRINTF(E_DBG, L_MDNS, "Avahi Record Browser (%s, proto %d): no more results (ALL_FOR_NOW)\n", hostname, proto);
else if (event == AVAHI_BROWSER_FAILURE)
DPRINTF(E_LOG, L_MDNS, "Avahi Record Browser (%s, proto %d) failure: %s\n", hostname, proto, MDNSERR);
else if (event == AVAHI_BROWSER_REMOVE)
return; // Not handled - record browser lifetime too short for this to happen
if (event != AVAHI_BROWSER_NEW)
goto out_free_record_browser;
ret = avahi_address_make(&addr, proto, rdata, size); // Not an avahi function despite the name
if (ret < 0)
return;
family = avahi_proto_to_af(proto);
avahi_address_snprint(address, sizeof(address), &addr);
// Avahi will sometimes give us link-local addresses in 169.254.0.0/16 or
// fe80::/10, which (most of the time) are useless
// - see also https://lists.freedesktop.org/archives/avahi/2012-September/002183.html
if ((proto == AVAHI_PROTO_INET && is_v4ll(&addr.data.ipv4)) || (proto == AVAHI_PROTO_INET6 && is_v6ll(&addr.data.ipv6)))
{
DPRINTF(E_WARN, L_MDNS, "Ignoring announcement from %s, address %s is link-local\n", hostname, address);
return;
}
DPRINTF(E_DBG, L_MDNS, "Avahi Record Browser (%s, proto %d): NEW record %s for service type '%s'\n", hostname, proto, address, rb_data->mb->type);
// Execute callback (mb->cb) with all the data
rb_data->mb->cb(rb_data->name, rb_data->mb->type, rb_data->domain, hostname, family, address, rb_data->port, &rb_data->txt_kv);
// Stop record browser
out_free_record_browser:
keyval_clear(&rb_data->txt_kv);
free(rb_data->name);
free(rb_data->domain);
free(rb_data);
avahi_record_browser_free(b);
}
void _mdns_delete_buddy(BonjourBuddy *buddy) {
AvahiBuddyImplData *idata = buddy->mdns_impl_data;
g_return_if_fail(idata != NULL);
if (idata->buddy_icon_rec_browser != NULL)
avahi_record_browser_free(idata->buddy_icon_rec_browser);
if (idata->resolver != NULL)
avahi_service_resolver_free(idata->resolver);
g_free(idata);
buddy->mdns_impl_data = NULL;
}
JNIEXPORT jlong JNICALL Java_avahi4j_RecordBrowser_releaseBrowser(JNIEnv *e,
jobject t, jlong ptr){
dprint("[LOG] Entering %s\n", __PRETTY_FUNCTION__);
struct avahi4j_record_browser *browser = (struct avahi4j_record_browser *) (uintptr_t) ptr;
int result;
result = avahi_record_browser_free(browser->browser);
if(browser->browserObject)
(*e)->DeleteGlobalRef(e, browser->browserObject);
XFREE(browser);
CHECK_N_RET(avahi_record_browser_free, result);
}
void avahi_client_free(AvahiClient *client) {
assert(client);
if (client->bus)
/* Disconnect in advance, so that the free() functions won't
* issue needless server calls */
#ifdef HAVE_DBUS_CONNECTION_CLOSE
dbus_connection_close(client->bus);
#else
dbus_connection_disconnect(client->bus);
#endif
while (client->groups)
avahi_entry_group_free(client->groups);
while (client->domain_browsers)
avahi_domain_browser_free(client->domain_browsers);
while (client->service_browsers)
avahi_service_browser_free(client->service_browsers);
while (client->service_type_browsers)
avahi_service_type_browser_free(client->service_type_browsers);
while (client->service_resolvers)
avahi_service_resolver_free(client->service_resolvers);
while (client->host_name_resolvers)
avahi_host_name_resolver_free(client->host_name_resolvers);
while (client->address_resolvers)
avahi_address_resolver_free(client->address_resolvers);
while (client->record_browsers)
avahi_record_browser_free(client->record_browsers);
if (client->bus)
dbus_connection_unref(client->bus);
avahi_free(client->version_string);
avahi_free(client->host_name);
avahi_free(client->host_name_fqdn);
avahi_free(client->domain_name);
avahi_free(client);
}
void _mdns_delete_buddy(BonjourBuddy *buddy) {
AvahiBuddyImplData *idata = buddy->mdns_impl_data;
g_return_if_fail(idata != NULL);
if (idata->buddy_icon_rec_browser != NULL)
avahi_record_browser_free(idata->buddy_icon_rec_browser);
while(idata->resolvers != NULL) {
AvahiSvcResolverData *rd = idata->resolvers->data;
_cleanup_resolver_data(rd);
idata->resolvers = g_slist_delete_link(idata->resolvers, idata->resolvers);
}
g_free(idata);
buddy->mdns_impl_data = NULL;
}
int /* O - Exit status */
main(int argc, /* I - Number of command-line args */
char *argv[]) /* I - Command-line arguments */
{
const char *name; /* Backend name */
cups_array_t *devices; /* Device array */
cups_device_t *device; /* Current device */
char uriName[1024]; /* Unquoted fullName for URI */
#ifdef HAVE_DNSSD
int fd; /* Main file descriptor */
fd_set input; /* Input set for select() */
struct timeval timeout; /* Timeout for select() */
DNSServiceRef main_ref, /* Main service reference */
fax_ipp_ref, /* IPP fax service reference */
ipp_ref, /* IPP service reference */
ipp_tls_ref, /* IPP w/TLS service reference */
ipps_ref, /* IPP service reference */
local_fax_ipp_ref, /* Local IPP fax service reference */
local_ipp_ref, /* Local IPP service reference */
local_ipp_tls_ref, /* Local IPP w/TLS service reference */
local_ipps_ref, /* Local IPP service reference */
local_printer_ref, /* Local LPD service reference */
pdl_datastream_ref, /* AppSocket service reference */
printer_ref, /* LPD service reference */
riousbprint_ref; /* Remote IO service reference */
#endif /* HAVE_DNSSD */
#ifdef HAVE_AVAHI
AvahiClient *client; /* Client information */
int error; /* Error code, if any */
#endif /* HAVE_AVAHI */
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
struct sigaction action; /* Actions for POSIX signals */
#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
/*
* Don't buffer stderr, and catch SIGTERM...
*/
setbuf(stderr, NULL);
#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
sigset(SIGTERM, sigterm_handler);
#elif defined(HAVE_SIGACTION)
memset(&action, 0, sizeof(action));
sigemptyset(&action.sa_mask);
action.sa_handler = sigterm_handler;
sigaction(SIGTERM, &action, NULL);
#else
signal(SIGTERM, sigterm_handler);
#endif /* HAVE_SIGSET */
/*
* Check command-line...
*/
if (argc >= 6)
exec_backend(argv);
else if (argc != 1)
{
_cupsLangPrintf(stderr,
_("Usage: %s job-id user title copies options [file]"),
argv[0]);
return (1);
}
/*
* Only do discovery when run as "dnssd"...
*/
if ((name = strrchr(argv[0], '/')) != NULL)
name ++;
else
name = argv[0];
if (strcmp(name, "dnssd"))
return (0);
/*
* Create an array to track devices...
*/
devices = cupsArrayNew((cups_array_func_t)compare_devices, NULL);
/*
* Browse for different kinds of printers...
*/
#ifdef HAVE_DNSSD
if (DNSServiceCreateConnection(&main_ref) != kDNSServiceErr_NoError)
{
perror("ERROR: Unable to create service connection");
return (1);
}
fd = DNSServiceRefSockFD(main_ref);
fax_ipp_ref = main_ref;
DNSServiceBrowse(&fax_ipp_ref, kDNSServiceFlagsShareConnection, 0,
"_fax-ipp._tcp", NULL, browse_callback, devices);
ipp_ref = main_ref;
DNSServiceBrowse(&ipp_ref, kDNSServiceFlagsShareConnection, 0,
"_ipp._tcp", NULL, browse_callback, devices);
ipp_tls_ref = main_ref;
DNSServiceBrowse(&ipp_tls_ref, kDNSServiceFlagsShareConnection, 0,
"_ipp-tls._tcp", NULL, browse_callback, devices);
ipps_ref = main_ref;
DNSServiceBrowse(&ipps_ref, kDNSServiceFlagsShareConnection, 0,
"_ipps._tcp", NULL, browse_callback, devices);
local_fax_ipp_ref = main_ref;
DNSServiceBrowse(&local_fax_ipp_ref, kDNSServiceFlagsShareConnection,
kDNSServiceInterfaceIndexLocalOnly,
"_fax-ipp._tcp", NULL, browse_local_callback, devices);
local_ipp_ref = main_ref;
DNSServiceBrowse(&local_ipp_ref, kDNSServiceFlagsShareConnection,
kDNSServiceInterfaceIndexLocalOnly,
"_ipp._tcp", NULL, browse_local_callback, devices);
local_ipp_tls_ref = main_ref;
DNSServiceBrowse(&local_ipp_tls_ref, kDNSServiceFlagsShareConnection,
kDNSServiceInterfaceIndexLocalOnly,
"_ipp-tls._tcp", NULL, browse_local_callback, devices);
local_ipps_ref = main_ref;
DNSServiceBrowse(&local_ipps_ref, kDNSServiceFlagsShareConnection,
kDNSServiceInterfaceIndexLocalOnly,
"_ipps._tcp", NULL, browse_local_callback, devices);
local_printer_ref = main_ref;
DNSServiceBrowse(&local_printer_ref, kDNSServiceFlagsShareConnection,
kDNSServiceInterfaceIndexLocalOnly,
"_printer._tcp", NULL, browse_local_callback, devices);
pdl_datastream_ref = main_ref;
DNSServiceBrowse(&pdl_datastream_ref, kDNSServiceFlagsShareConnection, 0,
"_pdl-datastream._tcp", NULL, browse_callback, devices);
printer_ref = main_ref;
DNSServiceBrowse(&printer_ref, kDNSServiceFlagsShareConnection, 0,
"_printer._tcp", NULL, browse_callback, devices);
riousbprint_ref = main_ref;
DNSServiceBrowse(&riousbprint_ref, kDNSServiceFlagsShareConnection, 0,
"_riousbprint._tcp", NULL, browse_callback, devices);
#endif /* HAVE_DNSSD */
#ifdef HAVE_AVAHI
if ((simple_poll = avahi_simple_poll_new()) == NULL)
{
fputs("DEBUG: Unable to create Avahi simple poll object.\n", stderr);
return (0);
}
avahi_simple_poll_set_func(simple_poll, poll_callback, NULL);
client = avahi_client_new(avahi_simple_poll_get(simple_poll),
0, client_callback, simple_poll, &error);
if (!client)
{
fputs("DEBUG: Unable to create Avahi client.\n", stderr);
return (0);
}
browsers = 6;
avahi_service_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
"_fax-ipp._tcp", NULL, 0,
browse_callback, devices);
avahi_service_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
"_ipp._tcp", NULL, 0,
browse_callback, devices);
avahi_service_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
"_ipp-tls._tcp", NULL, 0,
browse_callback, devices);
avahi_service_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
"_ipps._tcp", NULL, 0,
browse_callback, devices);
avahi_service_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
"_pdl-datastream._tcp",
NULL, 0,
browse_callback,
devices);
avahi_service_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
"_printer._tcp", NULL, 0,
browse_callback, devices);
#endif /* HAVE_AVAHI */
/*
* Loop until we are killed...
*/
while (!job_canceled)
{
int announce = 0; /* Announce printers? */
#ifdef HAVE_DNSSD
FD_ZERO(&input);
FD_SET(fd, &input);
timeout.tv_sec = 0;
timeout.tv_usec = 500000;
if (select(fd + 1, &input, NULL, NULL, &timeout) < 0)
continue;
if (FD_ISSET(fd, &input))
{
/*
* Process results of our browsing...
*/
DNSServiceProcessResult(main_ref);
}
else
announce = 1;
#elif defined(HAVE_AVAHI)
got_data = 0;
if ((error = avahi_simple_poll_iterate(simple_poll, 500)) > 0)
{
/*
* We've been told to exit the loop. Perhaps the connection to
* Avahi failed.
*/
break;
}
if (!got_data)
announce = 1;
#endif /* HAVE_DNSSD */
/* fprintf(stderr, "DEBUG: announce=%d\n", announce);*/
if (announce)
{
/*
* Announce any devices we've found...
*/
#ifdef HAVE_DNSSD
DNSServiceErrorType status; /* DNS query status */
#endif /* HAVE_DNSSD */
cups_device_t *best; /* Best matching device */
char device_uri[1024]; /* Device URI */
int count; /* Number of queries */
int sent; /* Number of sent */
for (device = (cups_device_t *)cupsArrayFirst(devices),
best = NULL, count = 0, sent = 0;
device;
device = (cups_device_t *)cupsArrayNext(devices))
{
if (device->sent)
sent ++;
if (device->ref)
count ++;
if (!device->ref && !device->sent)
{
/*
* Found the device, now get the TXT record(s) for it...
*/
if (count < 50)
{
fprintf(stderr, "DEBUG: Querying \"%s\"...\n", device->fullName);
#ifdef HAVE_DNSSD
device->ref = main_ref;
status = DNSServiceQueryRecord(&(device->ref),
kDNSServiceFlagsShareConnection,
0, device->fullName,
kDNSServiceType_TXT,
kDNSServiceClass_IN, query_callback,
device);
if (status != kDNSServiceErr_NoError)
fprintf(stderr,
"ERROR: Unable to query \"%s\" for TXT records: %d\n",
device->fullName, status);
/* Users never see this */
else
count ++;
#else
if ((device->ref = avahi_record_browser_new(client, AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
device->fullName,
AVAHI_DNS_CLASS_IN,
AVAHI_DNS_TYPE_TXT,
0,
query_callback,
device)) == NULL)
fprintf(stderr,
"ERROR: Unable to query \"%s\" for TXT records: %s\n",
device->fullName,
avahi_strerror(avahi_client_errno(client)));
/* Users never see this */
else
count ++;
#endif /* HAVE_AVAHI */
}
}
else if (!device->sent)
{
#ifdef HAVE_DNSSD
/*
* Got the TXT records, now report the device...
*/
DNSServiceRefDeallocate(device->ref);
#else
avahi_record_browser_free(device->ref);
#endif /* HAVE_DNSSD */
device->ref = NULL;
if (!best)
best = device;
else if (_cups_strcasecmp(best->name, device->name) ||
_cups_strcasecmp(best->domain, device->domain))
{
unquote(uriName, best->fullName, sizeof(uriName));
if (best->uuid)
httpAssembleURIf(HTTP_URI_CODING_ALL, device_uri,
sizeof(device_uri), "dnssd", NULL, uriName, 0,
best->cups_shared ? "/cups?uuid=%s" : "/?uuid=%s",
best->uuid);
else
httpAssembleURI(HTTP_URI_CODING_ALL, device_uri,
sizeof(device_uri), "dnssd", NULL, uriName, 0,
best->cups_shared ? "/cups" : "/");
cupsBackendReport("network", device_uri, best->make_and_model,
best->name, best->device_id, NULL);
best->sent = 1;
best = device;
sent ++;
}
else if (best->priority > device->priority ||
(best->priority == device->priority &&
best->type < device->type))
{
best->sent = 1;
best = device;
sent ++;
}
else
{
device->sent = 1;
sent ++;
}
}
}
if (best)
{
unquote(uriName, best->fullName, sizeof(uriName));
if (best->uuid)
httpAssembleURIf(HTTP_URI_CODING_ALL, device_uri,
sizeof(device_uri), "dnssd", NULL, uriName, 0,
best->cups_shared ? "/cups?uuid=%s" : "/?uuid=%s",
best->uuid);
else
httpAssembleURI(HTTP_URI_CODING_ALL, device_uri,
sizeof(device_uri), "dnssd", NULL, uriName, 0,
best->cups_shared ? "/cups" : "/");
cupsBackendReport("network", device_uri, best->make_and_model,
best->name, best->device_id, NULL);
best->sent = 1;
sent ++;
}
fprintf(stderr, "DEBUG: sent=%d, count=%d\n", sent, count);
#ifdef HAVE_AVAHI
if (sent == cupsArrayCount(devices) && browsers == 0)
#else
if (sent == cupsArrayCount(devices))
#endif /* HAVE_AVAHI */
break;
}
}
return (CUPS_BACKEND_OK);
}
static void
browse_record_callback_v6(AvahiRecordBrowser *b, AvahiIfIndex intf, AvahiProtocol proto,
AvahiBrowserEvent event, const char *hostname, uint16_t clazz, uint16_t type,
const void *rdata, size_t size, AvahiLookupResultFlags flags, void *userdata)
{
char address[INET6_ADDRSTRLEN + IF_NAMESIZE + 1];
char ifname[IF_NAMESIZE];
struct in6_addr addr;
struct mdns_record_browser *rb_data;
int ll;
int len;
int ret;
rb_data = (struct mdns_record_browser *)userdata;
switch (event)
{
case AVAHI_BROWSER_NEW:
if (size != sizeof(addr.s6_addr))
{
DPRINTF(E_WARN, L_MDNS, "Got RR type AAAA size %ld (should be %ld)\n", (long)size, (long)sizeof(addr.s6_addr));
return;
}
memcpy(&addr.s6_addr, rdata, sizeof(addr.s6_addr));
ll = is_v6ll(&addr);
if (ll && !(rb_data->mb->flags & MDNS_WANT_V6LL))
{
DPRINTF(E_DBG, L_MDNS, "Discarding IPv6 LL, not interested (service %s)\n", rb_data->name);
return;
}
else if (!ll && !(rb_data->mb->flags & MDNS_WANT_V6))
{
DPRINTF(E_DBG, L_MDNS, "Discarding IPv6, not interested (service %s)\n", rb_data->name);
return;
}
if (!inet_ntop(AF_INET6, &addr.s6_addr, address, sizeof(address)))
{
DPRINTF(E_LOG, L_MDNS, "Could not print IPv6 address: %s\n", strerror(errno));
return;
}
if (ll)
{
if (!if_indextoname(intf, ifname))
{
DPRINTF(E_LOG, L_MDNS, "Could not map interface index %d to a name\n", intf);
return;
}
len = strlen(address);
ret = snprintf(address + len, sizeof(address) - len, "%%%s", ifname);
if ((ret < 0) || (ret > sizeof(address) - len))
{
DPRINTF(E_LOG, L_MDNS, "Buffer too short for scoped IPv6 LL\n");
return;
}
}
DPRINTF(E_DBG, L_MDNS, "Service %s, hostname %s resolved to %s\n", rb_data->name, hostname, address);
/* Execute callback (mb->cb) with all the data */
rb_data->mb->cb(rb_data->name, rb_data->mb->type, rb_data->domain, hostname, AF_INET6, address, rb_data->port, &rb_data->txt_kv);
/* Got a suitable address, stop record browser */
break;
case AVAHI_BROWSER_REMOVE:
/* Not handled - record browser lifetime too short for this to happen */
return;
case AVAHI_BROWSER_CACHE_EXHAUSTED:
case AVAHI_BROWSER_ALL_FOR_NOW:
DPRINTF(E_DBG, L_MDNS, "Avahi Record Browser (%s v6): no more results (%s)\n", hostname,
(event == AVAHI_BROWSER_CACHE_EXHAUSTED) ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW");
break;
case AVAHI_BROWSER_FAILURE:
DPRINTF(E_LOG, L_MDNS, "Avahi Record Browser (%s v6) failure: %s\n", hostname,
avahi_strerror(avahi_client_errno(avahi_record_browser_get_client(b))));
break;
}
/* Cleanup when done/error */
keyval_clear(&rb_data->txt_kv);
free(rb_data->name);
free(rb_data->domain);
free(rb_data);
avahi_record_browser_free(b);
}
static void
browse_record_callback_v4(AvahiRecordBrowser *b, AvahiIfIndex intf, AvahiProtocol proto,
AvahiBrowserEvent event, const char *hostname, uint16_t clazz, uint16_t type,
const void *rdata, size_t size, AvahiLookupResultFlags flags, void *userdata)
{
char address[INET_ADDRSTRLEN];
struct in_addr addr;
struct mdns_record_browser *rb_data;
int ll;
rb_data = (struct mdns_record_browser *)userdata;
switch (event)
{
case AVAHI_BROWSER_NEW:
if (size != sizeof(addr.s_addr))
{
DPRINTF(E_WARN, L_MDNS, "Got RR type A size %ld (should be %ld)\n", (long)size, (long)sizeof(addr.s_addr));
return;
}
memcpy(&addr.s_addr, rdata, sizeof(addr.s_addr));
ll = is_v4ll(&addr);
if (ll && !(rb_data->mb->flags & MDNS_WANT_V4LL))
{
DPRINTF(E_DBG, L_MDNS, "Discarding IPv4 LL, not interested (service %s)\n", rb_data->name);
return;
}
else if (!ll && !(rb_data->mb->flags & MDNS_WANT_V4))
{
DPRINTF(E_DBG, L_MDNS, "Discarding IPv4, not interested (service %s)\n", rb_data->name);
return;
}
if (!inet_ntop(AF_INET, &addr.s_addr, address, sizeof(address)))
{
DPRINTF(E_LOG, L_MDNS, "Could not print IPv4 address: %s\n", strerror(errno));
return;
}
DPRINTF(E_DBG, L_MDNS, "Service %s, hostname %s resolved to %s\n", rb_data->name, hostname, address);
/* Execute callback (mb->cb) with all the data */
rb_data->mb->cb(rb_data->name, rb_data->mb->type, rb_data->domain, hostname, AF_INET, address, rb_data->port, &rb_data->txt_kv);
/* Got a suitable address, stop record browser */
break;
case AVAHI_BROWSER_REMOVE:
/* Not handled - record browser lifetime too short for this to happen */
return;
case AVAHI_BROWSER_CACHE_EXHAUSTED:
case AVAHI_BROWSER_ALL_FOR_NOW:
DPRINTF(E_DBG, L_MDNS, "Avahi Record Browser (%s v4): no more results (%s)\n", hostname,
(event == AVAHI_BROWSER_CACHE_EXHAUSTED) ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW");
break;
case AVAHI_BROWSER_FAILURE:
DPRINTF(E_LOG, L_MDNS, "Avahi Record Browser (%s v4) failure: %s\n", hostname,
avahi_strerror(avahi_client_errno(avahi_record_browser_get_client(b))));
break;
}
keyval_clear(&rb_data->txt_kv);
free(rb_data->name);
free(rb_data->domain);
free(rb_data);
avahi_record_browser_free(b);
}
AvahiRecordBrowser* avahi_record_browser_new(
AvahiClient *client,
AvahiIfIndex interface,
AvahiProtocol protocol,
const char *name,
uint16_t clazz,
uint16_t type,
AvahiLookupFlags flags,
AvahiRecordBrowserCallback callback,
void *userdata) {
AvahiRecordBrowser *b = NULL;
DBusMessage *message = NULL, *reply = NULL;
DBusError error;
char *path;
int32_t i_protocol, i_interface;
uint32_t u_flags;
assert(client);
assert(name);
assert(callback);
dbus_error_init(&error);
if (!avahi_client_is_connected(client)) {
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
goto fail;
}
if (!(b = avahi_new(AvahiRecordBrowser, 1))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
b->client = client;
b->callback = callback;
b->userdata = userdata;
b->path = NULL;
b->name = NULL;
b->clazz = clazz;
b->type = type;
b->interface = interface;
b->protocol = protocol;
AVAHI_LLIST_PREPEND(AvahiRecordBrowser, record_browsers, client->record_browsers, b);
if (!(b->name = avahi_strdup(name))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "RecordBrowserNew"))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
i_interface = (int32_t) interface;
i_protocol = (int32_t) protocol;
u_flags = (uint32_t) flags;
if (!dbus_message_append_args(
message,
DBUS_TYPE_INT32, &i_interface,
DBUS_TYPE_INT32, &i_protocol,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_UINT16, &clazz,
DBUS_TYPE_UINT16, &type,
DBUS_TYPE_UINT32, &u_flags,
DBUS_TYPE_INVALID)) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
if (!(reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error)) ||
dbus_error_is_set(&error)) {
avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
goto fail;
}
if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
dbus_error_is_set(&error) ||
!path) {
avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
goto fail;
}
if (!(b->path = avahi_strdup(path))) {
/* FIXME: We don't remove the object on the server side */
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
dbus_message_unref(message);
dbus_message_unref(reply);
return b;
fail:
if (dbus_error_is_set(&error)) {
avahi_client_set_dbus_error(client, &error);
dbus_error_free(&error);
}
if (b)
avahi_record_browser_free(b);
if (message)
dbus_message_unref(message);
if (reply)
dbus_message_unref(reply);
return NULL;
}
