Szymon Starzycki | 6581228 | 2013-09-13 15:37:08 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009-2013, Google Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * * Neither the name of Google, Inc. nor the names of its contributors |
| 15 | * may be used to endorse or promote products derived from this |
| 16 | * software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 22 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 26 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 27 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 28 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <stdio.h> |
| 33 | #include <string.h> |
| 34 | #include <dns_sd.h> |
| 35 | #include <cutils/properties.h> |
| 36 | #include <unistd.h> |
| 37 | |
| 38 | #include "debug.h" |
| 39 | #include "network_discovery.h" |
| 40 | #include "utils.h" |
| 41 | |
| 42 | #define MDNS_SERVICE_NAME "mdnsd" |
| 43 | #define MDNS_SERVICE_STATUS "init.svc.mdnsd" |
| 44 | #define FASTBOOTD_TYPE "_fastbootd._tcp" |
| 45 | #define FASTBOOTD_DOMAIN "local." |
| 46 | #define FASTBOOTD_NAME "fastbootd" |
| 47 | |
| 48 | |
| 49 | static void reg_reply(DNSServiceRef sdref, const DNSServiceFlags flags, DNSServiceErrorType errorCode, |
| 50 | const char *name, const char *regtype, const char *domain, void *context) |
| 51 | { |
| 52 | (void)sdref; // Unused |
| 53 | (void)flags; // Unused |
| 54 | (void)context; // Unused |
| 55 | if (errorCode == kDNSServiceErr_ServiceNotRunning) { |
| 56 | fprintf(stderr, "Error code %d\n", errorCode); |
| 57 | } |
| 58 | |
| 59 | |
| 60 | printf("Got a reply for service %s.%s%s: ", name, regtype, domain); |
| 61 | |
| 62 | if (errorCode == kDNSServiceErr_NoError) |
| 63 | { |
| 64 | if (flags & kDNSServiceFlagsAdd) |
| 65 | printf("Name now registered and active\n"); |
| 66 | else |
| 67 | printf("Name registration removed\n"); |
| 68 | if (errorCode == kDNSServiceErr_NameConflict) |
| 69 | printf("Name in use, please choose another\n"); |
| 70 | else |
| 71 | printf("Error %d\n", errorCode); |
| 72 | |
| 73 | if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | static int register_service() { |
| 78 | DNSServiceRef sdref = NULL; |
| 79 | const char *domain = FASTBOOTD_DOMAIN; |
| 80 | const char *type = FASTBOOTD_TYPE; |
| 81 | const char *host = NULL; |
| 82 | char name[PROP_VALUE_MAX]; |
| 83 | uint16_t port = 22; |
| 84 | int flags = 0; |
| 85 | DNSServiceErrorType result; |
| 86 | property_get("ro.serialno", name, ""); |
| 87 | if (!strcmp(name, "")) { |
| 88 | D(ERR, "No property serialno"); |
| 89 | return -1; |
| 90 | } |
| 91 | |
| 92 | result = DNSServiceRegister(&sdref, flags, kDNSServiceInterfaceIndexAny, |
| 93 | name, type, domain, host, port, |
| 94 | 0, NULL, reg_reply, NULL); |
| 95 | if (result != kDNSServiceErr_NoError) { |
| 96 | D(ERR, "Unable to register service"); |
| 97 | return -1; |
| 98 | } |
| 99 | return 0; |
| 100 | } |
| 101 | |
| 102 | |
| 103 | int network_discovery_init() |
| 104 | { |
| 105 | D(INFO, "Starting discovery"); |
| 106 | if (service_start(MDNS_SERVICE_NAME)) { |
| 107 | D(ERR, "Unable to start discovery"); |
| 108 | return -1; |
| 109 | } |
| 110 | |
| 111 | if (register_service()) { |
| 112 | D(ERR, "Unable to register service"); |
| 113 | return -1; |
| 114 | } |
| 115 | |
| 116 | return 0; |
| 117 | } |
| 118 | |