src/dnssd.m

   1 #include <stdlib.h>
   2
   3 #include "dnssd.h"
   4 #include "dnssdint.h"
   5 #include "global.h"
   6 #include "utils.h"
   7
   8 #import <Foundation/Foundation.h>
   9
  10 #define MAX_SERVNAME 256
  11
  12 struct dnssd_s {
  13         char hwaddr[MAX_HWADDR_LEN];
  14         int hwaddrlen;
  15
  16         NSNetService *raopService;
  17         NSNetService *airplayService;
  18 };
  19
  20 dnssd_t *
  21 dnssd_init(const char *hwaddr, int hwaddrlen, int *error)
  22 {
  23         dnssd_t *dnssd;
  24
  25         if (error) *error = DNSSD_ERROR_NOERROR;
  26         if (hwaddrlen > MAX_HWADDR_LEN) {
  27                 if (error) *error = DNSSD_ERROR_HWADDRLEN;
  28                 return NULL;
  29         }
  30
  31         dnssd = calloc(1, sizeof(dnssd_t));
  32         if (!dnssd) {
  33                 if (error) *error = DNSSD_ERROR_OUTOFMEM;
  34                 return NULL;
  35         }
  36         memcpy(dnssd->hwaddr, hwaddr, hwaddrlen);
  37         dnssd->hwaddrlen = hwaddrlen;
  38
  39         return dnssd;
  40 }
  41
  42 void
  43 dnssd_destroy(dnssd_t *dnssd)
  44 {
  45         free(dnssd);
  46 }
  47
  48 int
  49 dnssd_register_raop(dnssd_t *dnssd, const char *name, unsigned short port)
  50 {
  51         char hwaddrstr[MAX_SERVNAME];
  52         NSString *serviceString;
  53         NSMutableDictionary *txtDict;
  54         NSData *txtData;
  55         int ret;
  56
  57         assert(dnssd);
  58
  59         if (dnssd->raopService != nil) {
  60                 return -1;
  61         }
  62
  63         /* Convert the hardware address to string */
  64         ret = utils_hwaddr_raop(hwaddrstr, sizeof(hwaddrstr), dnssd->hwaddr, dnssd->hwaddrlen);
  65         if (ret < 0) {
  66                 return -2;
  67         }
  68         serviceString = [NSString stringWithFormat:@"%s@%s", hwaddrstr, name];
  69
  70         txtDict = [NSMutableDictionary dictionaryWithCapacity:0];
  71         [txtDict setValue:[NSString stringWithUTF8String:RAOP_TXTVERS] forKey:@"txtvers"];
  72         [txtDict setValue:[NSString stringWithUTF8String:RAOP_CH] forKey:@"ch"];
  73         [txtDict setValue:[NSString stringWithUTF8String:RAOP_CN] forKey:@"cn"];
  74         [txtDict setValue:[NSString stringWithUTF8String:RAOP_ET] forKey:@"et"];
  75         [txtDict setValue:[NSString stringWithUTF8String:RAOP_SV] forKey:@"sv"];
  76         [txtDict setValue:[NSString stringWithUTF8String:RAOP_DA] forKey:@"da"];
  77         [txtDict setValue:[NSString stringWithUTF8String:RAOP_SR] forKey:@"sr"];
  78         [txtDict setValue:[NSString stringWithUTF8String:RAOP_SS] forKey:@"ss"];
  79         [txtDict setValue:[NSString stringWithUTF8String:RAOP_PW] forKey:@"pw"];
  80         [txtDict setValue:[NSString stringWithUTF8String:RAOP_VN] forKey:@"vn"];
  81         [txtDict setValue:[NSString stringWithUTF8String:RAOP_TP] forKey:@"tp"];
  82         [txtDict setValue:[NSString stringWithUTF8String:RAOP_MD] forKey:@"md"];
  83         [txtDict setValue:[NSString stringWithUTF8String:GLOBAL_VERSION] forKey:@"vs"];
  84         [txtDict setValue:[NSString stringWithUTF8String:RAOP_AM] forKey:@"am"];
  85         [txtDict setValue:[NSString stringWithUTF8String:RAOP_SF] forKey:@"sf"];
  86         txtData = [NSNetService dataFromTXTRecordDictionary:txtDict];
  87
  88         /* Create the service and publish it */
  89         dnssd->raopService = [[NSNetService alloc] initWithDomain:@""
  90                                                    type:@"_raop._tcp"
  91                                                    name:serviceString
  92                                                    port:port];
  93         [dnssd->raopService setTXTRecordData:txtData];
  94         [dnssd->raopService publish];
  95         return 1;
  96 }
  97
  98 int
  99 dnssd_register_airplay(dnssd_t *dnssd, const char *name, unsigned short port)
 100 {
 101         NSMutableDictionary *txtDict;
 102         NSData *txtData;
 103         char deviceid[3*MAX_HWADDR_LEN];
 104         char features[16];
 105         int ret;
 106
 107         assert(dnssd);
 108
 109         if (dnssd->airplayService != nil) {
 110                 return -1;
 111         }
 112
 113         /* Convert hardware address to string */
 114         ret = utils_hwaddr_airplay(deviceid, sizeof(deviceid), dnssd->hwaddr, dnssd->hwaddrlen);
 115         if (ret < 0) {
 116                 return -2;
 117         }
 118
 119         memset(features, 0, sizeof(features));
 120         snprintf(features, sizeof(features)-1, "0x%x", GLOBAL_FEATURES);
 121
 122         txtDict = [NSMutableDictionary dictionaryWithCapacity:0];
 123         [txtDict setValue:[NSString stringWithUTF8String:deviceid] forKey:@"deviceid"];
 124         [txtDict setValue:[NSString stringWithUTF8String:features] forKey:@"features"];
 125         [txtDict setValue:[NSString stringWithUTF8String:GLOBAL_MODEL] forKey:@"model"];
 126         txtData = [NSNetService dataFromTXTRecordDictionary:txtDict];
 127
 128         /* Create the service and publish it */
 129         dnssd->airplayService = [[NSNetService alloc] initWithDomain:@""
 130                                                    type:@"_airplay._tcp"
 131                                                    name:[NSString stringWithUTF8String:name]
 132                                                    port:port];
 133         [dnssd->airplayService setTXTRecordData:txtData];
 134         [dnssd->airplayService publish];
 135         return 1;
 136 }
 137
 138 void
 139 dnssd_unregister_raop(dnssd_t *dnssd)
 140 {
 141         assert(dnssd);
 142
 143         if (dnssd->raopService == nil) {
 144                 return;
 145         }
 146
 147         [dnssd->raopService stop];
 148         [dnssd->raopService release];
 149         dnssd->raopService = nil;
 150 }
 151
 152 void
 153 dnssd_unregister_airplay(dnssd_t *dnssd)
 154 {
 155         assert(dnssd);
 156
 157         if (dnssd->airplayService == nil) {
 158                 return;
 159         }
 160
 161         [dnssd->airplayService stop];
 162         [dnssd->airplayService release];
 163         dnssd->airplayService = nil;
 164 }