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/*
* Copyright (c) 2009-2013, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <dns_sd.h>
#include <cutils/properties.h>
#include <unistd.h>
#include "debug.h"
#include "network_discovery.h"
#include "utils.h"
#define MDNS_SERVICE_NAME "mdnsd"
#define MDNS_SERVICE_STATUS "init.svc.mdnsd"
#define FASTBOOTD_TYPE "_fastbootd._tcp"
#define FASTBOOTD_DOMAIN "local."
#define FASTBOOTD_NAME "fastbootd"
static void reg_reply(DNSServiceRef sdref, const DNSServiceFlags flags, DNSServiceErrorType errorCode,
const char *name, const char *regtype, const char *domain, void *context)
{
(void)sdref; // Unused
(void)flags; // Unused
(void)context; // Unused
if (errorCode == kDNSServiceErr_ServiceNotRunning) {
fprintf(stderr, "Error code %d\n", errorCode);
}
printf("Got a reply for service %s.%s%s: ", name, regtype, domain);
if (errorCode == kDNSServiceErr_NoError)
{
if (flags & kDNSServiceFlagsAdd)
printf("Name now registered and active\n");
else
printf("Name registration removed\n");
if (errorCode == kDNSServiceErr_NameConflict)
printf("Name in use, please choose another\n");
else
printf("Error %d\n", errorCode);
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
}
static int register_service() {
DNSServiceRef sdref = NULL;
const char *domain = FASTBOOTD_DOMAIN;
const char *type = FASTBOOTD_TYPE;
const char *host = NULL;
char name[PROP_VALUE_MAX];
uint16_t port = 22;
int flags = 0;
DNSServiceErrorType result;
property_get("ro.serialno", name, "");
if (!strcmp(name, "")) {
D(ERR, "No property serialno");
return -1;
}
result = DNSServiceRegister(&sdref, flags, kDNSServiceInterfaceIndexAny,
name, type, domain, host, port,
0, NULL, reg_reply, NULL);
if (result != kDNSServiceErr_NoError) {
D(ERR, "Unable to register service");
return -1;
}
return 0;
}
int network_discovery_init()
{
D(INFO, "Starting discovery");
if (service_start(MDNS_SERVICE_NAME)) {
D(ERR, "Unable to start discovery");
return -1;
}
if (register_service()) {
D(ERR, "Unable to register service");
return -1;
}
return 0;
}
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