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