[deb_shairplay.git] / src / lib / dnssd.c

/**
 *  Copyright (C) 2011-2012  Juho Vähä-Herttua
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 */

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>

#include "dnssd.h"
#include "dnssdint.h"
#include "global.h"
#include "compat.h"
#include "utils.h"

#define MAX_DEVICEID 18
#define MAX_SERVNAME 256

#define USE_LIBDL (defined(HAVE_LIBDL) && !defined(__APPLE__))

#if defined(WIN32) || USE_LIBDL
# ifdef WIN32
#  include <stdint.h>
#  if !defined(EFI32) && !defined(EFI64)
#   define DNSSD_STDCALL __stdcall
#  else
#   define DNSSD_STDCALL
#  endif
# else
#  include <dlfcn.h>
#  define DNSSD_STDCALL
# endif

typedef struct _DNSServiceRef_t *DNSServiceRef;
typedef union _TXTRecordRef_t { char PrivateData[16]; char *ForceNaturalAlignment; } TXTRecordRef;

typedef uint32_t DNSServiceFlags;
typedef int32_t  DNSServiceErrorType;

typedef void (DNSSD_STDCALL *DNSServiceRegisterReply)
    (
    DNSServiceRef                       sdRef,
    DNSServiceFlags                     flags,
    DNSServiceErrorType                 errorCode,
    const char                          *name,
    const char                          *regtype,
    const char                          *domain,
    void                                *context
    );

#else
# include <dns_sd.h>
# define DNSSD_STDCALL
#endif

typedef DNSServiceErrorType (DNSSD_STDCALL *DNSServiceRegister_t)
    (
    DNSServiceRef                       *sdRef,
    DNSServiceFlags                     flags,
    uint32_t                            interfaceIndex,
    const char                          *name,
    const char                          *regtype,
    const char                          *domain,
    const char                          *host,
    uint16_t                            port,
    uint16_t                            txtLen,
    const void                          *txtRecord,
    DNSServiceRegisterReply             callBack,
    void                                *context
    );
typedef void (DNSSD_STDCALL *DNSServiceRefDeallocate_t)(DNSServiceRef sdRef);
typedef void (DNSSD_STDCALL *TXTRecordCreate_t)
    (
    TXTRecordRef     *txtRecord,
    uint16_t         bufferLen,
    void             *buffer
    );
typedef void (DNSSD_STDCALL *TXTRecordDeallocate_t)(TXTRecordRef *txtRecord);
typedef DNSServiceErrorType (DNSSD_STDCALL *TXTRecordSetValue_t)
    (
    TXTRecordRef     *txtRecord,
    const char       *key,
    uint8_t          valueSize,
    const void       *value
    );
typedef uint16_t (DNSSD_STDCALL *TXTRecordGetLength_t)(const TXTRecordRef *txtRecord);
typedef const void * (DNSSD_STDCALL *TXTRecordGetBytesPtr_t)(const TXTRecordRef *txtRecord);


struct dnssd_s {
#ifdef WIN32
	HMODULE module;
#elif USE_LIBDL
	void *module;
#endif

	DNSServiceRegister_t       DNSServiceRegister;
	DNSServiceRefDeallocate_t  DNSServiceRefDeallocate;
	TXTRecordCreate_t          TXTRecordCreate;
	TXTRecordSetValue_t        TXTRecordSetValue;
	TXTRecordGetLength_t       TXTRecordGetLength;
	TXTRecordGetBytesPtr_t     TXTRecordGetBytesPtr;
	TXTRecordDeallocate_t      TXTRecordDeallocate;

	DNSServiceRef raopService;
	DNSServiceRef airplayService;
};


dnssd_t *
dnssd_init(int *error)
{
	dnssd_t *dnssd;

	if (error) *error = DNSSD_ERROR_NOERROR;

	dnssd = calloc(1, sizeof(dnssd_t));
	if (!dnssd) {
		if (error) *error = DNSSD_ERROR_OUTOFMEM;
		return NULL;
	}

#ifdef WIN32
	dnssd->module = LoadLibraryA("dnssd.dll");
	if (!dnssd->module) {
		if (error) *error = DNSSD_ERROR_LIBNOTFOUND;
		free(dnssd);
		return NULL;
	}
	dnssd->DNSServiceRegister = (DNSServiceRegister_t)GetProcAddress(dnssd->module, "DNSServiceRegister");
	dnssd->DNSServiceRefDeallocate = (DNSServiceRefDeallocate_t)GetProcAddress(dnssd->module, "DNSServiceRefDeallocate");
	dnssd->TXTRecordCreate = (TXTRecordCreate_t)GetProcAddress(dnssd->module, "TXTRecordCreate");
	dnssd->TXTRecordSetValue = (TXTRecordSetValue_t)GetProcAddress(dnssd->module, "TXTRecordSetValue");
	dnssd->TXTRecordGetLength = (TXTRecordGetLength_t)GetProcAddress(dnssd->module, "TXTRecordGetLength");
	dnssd->TXTRecordGetBytesPtr = (TXTRecordGetBytesPtr_t)GetProcAddress(dnssd->module, "TXTRecordGetBytesPtr");
	dnssd->TXTRecordDeallocate = (TXTRecordDeallocate_t)GetProcAddress(dnssd->module, "TXTRecordDeallocate");

	if (!dnssd->DNSServiceRegister || !dnssd->DNSServiceRefDeallocate || !dnssd->TXTRecordCreate ||
	    !dnssd->TXTRecordSetValue || !dnssd->TXTRecordGetLength || !dnssd->TXTRecordGetBytesPtr ||
	    !dnssd->TXTRecordDeallocate) {
		if (error) *error = DNSSD_ERROR_PROCNOTFOUND;
		FreeLibrary(dnssd->module);
		free(dnssd);
		return NULL;
	}
#elif USE_LIBDL
	dnssd->module = dlopen("libdns_sd.so", RTLD_LAZY);
	if (!dnssd->module) {
		if (error) *error = DNSSD_ERROR_LIBNOTFOUND;
		free(dnssd);
		return NULL;
	}
	dnssd->DNSServiceRegister = (DNSServiceRegister_t)dlsym(dnssd->module, "DNSServiceRegister");
	dnssd->DNSServiceRefDeallocate = (DNSServiceRefDeallocate_t)dlsym(dnssd->module, "DNSServiceRefDeallocate");
	dnssd->TXTRecordCreate = (TXTRecordCreate_t)dlsym(dnssd->module, "TXTRecordCreate");
	dnssd->TXTRecordSetValue = (TXTRecordSetValue_t)dlsym(dnssd->module, "TXTRecordSetValue");
	dnssd->TXTRecordGetLength = (TXTRecordGetLength_t)dlsym(dnssd->module, "TXTRecordGetLength");
	dnssd->TXTRecordGetBytesPtr = (TXTRecordGetBytesPtr_t)dlsym(dnssd->module, "TXTRecordGetBytesPtr");
	dnssd->TXTRecordDeallocate = (TXTRecordDeallocate_t)dlsym(dnssd->module, "TXTRecordDeallocate");

	if (!dnssd->DNSServiceRegister || !dnssd->DNSServiceRefDeallocate || !dnssd->TXTRecordCreate ||
	    !dnssd->TXTRecordSetValue || !dnssd->TXTRecordGetLength || !dnssd->TXTRecordGetBytesPtr ||
	    !dnssd->TXTRecordDeallocate) {
		if (error) *error = DNSSD_ERROR_PROCNOTFOUND;
		dlclose(dnssd->module);
		free(dnssd);
		return NULL;
	}
#else
	dnssd->DNSServiceRegister = &DNSServiceRegister;
	dnssd->DNSServiceRefDeallocate = &DNSServiceRefDeallocate;
	dnssd->TXTRecordCreate = &TXTRecordCreate;
	dnssd->TXTRecordSetValue = &TXTRecordSetValue;
	dnssd->TXTRecordGetLength = &TXTRecordGetLength;
	dnssd->TXTRecordGetBytesPtr = &TXTRecordGetBytesPtr;
	dnssd->TXTRecordDeallocate = &TXTRecordDeallocate;
#endif

	return dnssd;
}

void
dnssd_destroy(dnssd_t *dnssd)
{
	if (dnssd) {
#ifdef WIN32
		FreeLibrary(dnssd->module);
#elif USE_LIBDL
		dlclose(dnssd->module);
#endif
		free(dnssd);
	}
}

int
dnssd_register_raop(dnssd_t *dnssd, const char *name, unsigned short port, const char *hwaddr, int hwaddrlen, int password)
{
	TXTRecordRef txtRecord;
	char servname[MAX_SERVNAME];
	int ret;

	assert(dnssd);
	assert(name);
	assert(hwaddr);

	dnssd->TXTRecordCreate(&txtRecord, 0, NULL);
	dnssd->TXTRecordSetValue(&txtRecord, "txtvers", strlen(RAOP_TXTVERS), RAOP_TXTVERS);
	dnssd->TXTRecordSetValue(&txtRecord, "ch", strlen(RAOP_CH), RAOP_CH);
	dnssd->TXTRecordSetValue(&txtRecord, "cn", strlen(RAOP_CN), RAOP_CN);
	dnssd->TXTRecordSetValue(&txtRecord, "et", strlen(RAOP_ET), RAOP_ET);
	dnssd->TXTRecordSetValue(&txtRecord, "sv", strlen(RAOP_SV), RAOP_SV);
	dnssd->TXTRecordSetValue(&txtRecord, "da", strlen(RAOP_DA), RAOP_DA);
	dnssd->TXTRecordSetValue(&txtRecord, "sr", strlen(RAOP_SR), RAOP_SR);
	dnssd->TXTRecordSetValue(&txtRecord, "ss", strlen(RAOP_SS), RAOP_SS);
	if (password) {
		dnssd->TXTRecordSetValue(&txtRecord, "pw", strlen("true"), "true");
	} else {
		dnssd->TXTRecordSetValue(&txtRecord, "pw", strlen("false"), "false");
	}
	dnssd->TXTRecordSetValue(&txtRecord, "vn", strlen(RAOP_VN), RAOP_VN);
	dnssd->TXTRecordSetValue(&txtRecord, "tp", strlen(RAOP_TP), RAOP_TP);
	dnssd->TXTRecordSetValue(&txtRecord, "md", strlen(RAOP_MD), RAOP_MD);
	dnssd->TXTRecordSetValue(&txtRecord, "vs", strlen(GLOBAL_VERSION), GLOBAL_VERSION);
	dnssd->TXTRecordSetValue(&txtRecord, "sm", strlen(RAOP_SM), RAOP_SM);
	dnssd->TXTRecordSetValue(&txtRecord, "ek", strlen(RAOP_EK), RAOP_EK);

	/* Convert hardware address to string */
	ret = utils_hwaddr_raop(servname, sizeof(servname), hwaddr, hwaddrlen);
	if (ret < 0) {
		/* FIXME: handle better */
		return -1;
	}

	/* Check that we have bytes for 'hw@name' format */
	if (sizeof(servname) < strlen(servname)+1+strlen(name)+1) {
		/* FIXME: handle better */
		return -2;
	}

	strncat(servname, "@", sizeof(servname)-strlen(servname)-1);
	strncat(servname, name, sizeof(servname)-strlen(servname)-1);

	/* Register the service */
	dnssd->DNSServiceRegister(&dnssd->raopService, 0, 0,
	                          servname, "_raop._tcp",
	                          NULL, NULL,
	                          htons(port),
	                          dnssd->TXTRecordGetLength(&txtRecord),
	                          dnssd->TXTRecordGetBytesPtr(&txtRecord),
	                          NULL, NULL);

	/* Deallocate TXT record */
	dnssd->TXTRecordDeallocate(&txtRecord);
	return 1;
}

int
dnssd_register_airplay(dnssd_t *dnssd, const char *name, unsigned short port, const char *hwaddr, int hwaddrlen)
{
	TXTRecordRef txtRecord;
	char deviceid[3*MAX_HWADDR_LEN];
	char features[16];
	int ret;

	assert(dnssd);
	assert(name);
	assert(hwaddr);

	/* Convert hardware address to string */
	ret = utils_hwaddr_airplay(deviceid, sizeof(deviceid), hwaddr, hwaddrlen);
	if (ret < 0) {
		/* FIXME: handle better */
		return -1;
	}

	features[sizeof(features)-1] = '\0';
	snprintf(features, sizeof(features)-1, "0x%x", GLOBAL_FEATURES);

	dnssd->TXTRecordCreate(&txtRecord, 0, NULL);
	dnssd->TXTRecordSetValue(&txtRecord, "deviceid", strlen(deviceid), deviceid);
	dnssd->TXTRecordSetValue(&txtRecord, "features", strlen(features), features);
	dnssd->TXTRecordSetValue(&txtRecord, "model", strlen(GLOBAL_MODEL), GLOBAL_MODEL);

	/* Register the service */
	dnssd->DNSServiceRegister(&dnssd->airplayService, 0, 0,
	                          name, "_airplay._tcp",
	                          NULL, NULL,
	                          htons(port),
	                          dnssd->TXTRecordGetLength(&txtRecord),
	                          dnssd->TXTRecordGetBytesPtr(&txtRecord),
	                          NULL, NULL);

	/* Deallocate TXT record */
	dnssd->TXTRecordDeallocate(&txtRecord);
	return 0;
}

void
dnssd_unregister_raop(dnssd_t *dnssd)
{
	assert(dnssd);

	if (!dnssd->raopService) {
		return;
	}

	dnssd->DNSServiceRefDeallocate(dnssd->raopService);
	dnssd->raopService = NULL;
}

void
dnssd_unregister_airplay(dnssd_t *dnssd)
{
	assert(dnssd);

	if (!dnssd->airplayService) {
		return;
	}

	dnssd->DNSServiceRefDeallocate(dnssd->airplayService);
	dnssd->airplayService = NULL;
}
Commit	Line	Data
23e7e3ae JVH	1	/**
	2	* Copyright (C) 2011-2012 Juho Vähä-Herttua
	3	*
	4	* This library is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU Lesser General Public
	6	* License as published by the Free Software Foundation; either
	7	* version 2.1 of the License, or (at your option) any later version.
	8	*
	9	* This library is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	* Lesser General Public License for more details.
	13	*/
	14
2340bcd3 JVH	15	#include <stdlib.h>
	16	#include <string.h>
	17	#include <stdio.h>
	18	#include <assert.h>
	19
	20	#include "dnssd.h"
	21	#include "dnssdint.h"
	22	#include "global.h"
	23	#include "compat.h"
	24	#include "utils.h"
	25
	26	#define MAX_DEVICEID 18
	27	#define MAX_SERVNAME 256
	28
6da21350 JVH	29	#define USE_LIBDL (defined(HAVE_LIBDL) && !defined(__APPLE__))
	30
	31	#if defined(WIN32) \|\| USE_LIBDL
	32	# ifdef WIN32
	33	# include <stdint.h>
	34	# if !defined(EFI32) && !defined(EFI64)
	35	# define DNSSD_STDCALL __stdcall
	36	# else
	37	# define DNSSD_STDCALL
	38	# endif
2340bcd3	39	# else
6da21350	40	# include <dlfcn.h>
427cd9fb	41	# define DNSSD_STDCALL
2340bcd3 JVH	42	# endif
	43
	44	typedef struct _DNSServiceRef_t *DNSServiceRef;
	45	typedef union _TXTRecordRef_t { char PrivateData[16]; char *ForceNaturalAlignment; } TXTRecordRef;
	46
	47	typedef uint32_t DNSServiceFlags;
	48	typedef int32_t DNSServiceErrorType;
	49
427cd9fb	50	typedef void (DNSSD_STDCALL *DNSServiceRegisterReply)
2340bcd3 JVH	51	(
	52	DNSServiceRef sdRef,
	53	DNSServiceFlags flags,
	54	DNSServiceErrorType errorCode,
	55	const char *name,
	56	const char *regtype,
	57	const char *domain,
	58	void *context
	59	);
6da21350 JVH	60
	61	#else
	62	# include <dns_sd.h>
	63	# define DNSSD_STDCALL
2340bcd3 JVH	64	#endif
2340bcd3 JVH	65
427cd9fb	66	typedef DNSServiceErrorType (DNSSD_STDCALL *DNSServiceRegister_t)
2340bcd3 JVH	67	(
	68	DNSServiceRef *sdRef,
	69	DNSServiceFlags flags,
	70	uint32_t interfaceIndex,
	71	const char *name,
	72	const char *regtype,
	73	const char *domain,
	74	const char *host,
	75	uint16_t port,
	76	uint16_t txtLen,
	77	const void *txtRecord,
	78	DNSServiceRegisterReply callBack,
	79	void *context
	80	);
427cd9fb JVH	81	typedef void (DNSSD_STDCALL *DNSServiceRefDeallocate_t)(DNSServiceRef sdRef);
427cd9fb JVH	82	typedef void (DNSSD_STDCALL *TXTRecordCreate_t)
2340bcd3 JVH	83	(
	84	TXTRecordRef *txtRecord,
	85	uint16_t bufferLen,
	86	void *buffer
	87	);
427cd9fb JVH	88	typedef void (DNSSD_STDCALL TXTRecordDeallocate_t)(TXTRecordRef txtRecord);
427cd9fb JVH	89	typedef DNSServiceErrorType (DNSSD_STDCALL *TXTRecordSetValue_t)
2340bcd3 JVH	90	(
	91	TXTRecordRef *txtRecord,
	92	const char *key,
	93	uint8_t valueSize,
	94	const void *value
	95	);
427cd9fb JVH	96	typedef uint16_t (DNSSD_STDCALL TXTRecordGetLength_t)(const TXTRecordRef txtRecord);
427cd9fb JVH	97	typedef const void * (DNSSD_STDCALL TXTRecordGetBytesPtr_t)(const TXTRecordRef txtRecord);
2340bcd3 JVH	98
	99
	100	struct dnssd_s {
	101	#ifdef WIN32
	102	HMODULE module;
6da21350 JVH	103	#elif USE_LIBDL
6da21350 JVH	104	void *module;
2340bcd3 JVH	105	#endif
	106
	107	DNSServiceRegister_t DNSServiceRegister;
	108	DNSServiceRefDeallocate_t DNSServiceRefDeallocate;
	109	TXTRecordCreate_t TXTRecordCreate;
	110	TXTRecordSetValue_t TXTRecordSetValue;
	111	TXTRecordGetLength_t TXTRecordGetLength;
	112	TXTRecordGetBytesPtr_t TXTRecordGetBytesPtr;
	113	TXTRecordDeallocate_t TXTRecordDeallocate;
	114
2340bcd3 JVH	115	DNSServiceRef raopService;
	116	DNSServiceRef airplayService;
	117	};
	118
	119
	120
	121	dnssd_t *
067f00ef	122	dnssd_init(int *error)
2340bcd3 JVH	123	{
	124	dnssd_t *dnssd;
	125
	126	if (error) *error = DNSSD_ERROR_NOERROR;
2340bcd3 JVH	127
	128	dnssd = calloc(1, sizeof(dnssd_t));
	129	if (!dnssd) {
	130	if (error) *error = DNSSD_ERROR_OUTOFMEM;
	131	return NULL;
	132	}
	133
	134	#ifdef WIN32
	135	dnssd->module = LoadLibraryA("dnssd.dll");
	136	if (!dnssd->module) {
	137	if (error) *error = DNSSD_ERROR_LIBNOTFOUND;
	138	free(dnssd);
	139	return NULL;
	140	}
	141	dnssd->DNSServiceRegister = (DNSServiceRegister_t)GetProcAddress(dnssd->module, "DNSServiceRegister");
	142	dnssd->DNSServiceRefDeallocate = (DNSServiceRefDeallocate_t)GetProcAddress(dnssd->module, "DNSServiceRefDeallocate");
	143	dnssd->TXTRecordCreate = (TXTRecordCreate_t)GetProcAddress(dnssd->module, "TXTRecordCreate");
	144	dnssd->TXTRecordSetValue = (TXTRecordSetValue_t)GetProcAddress(dnssd->module, "TXTRecordSetValue");
	145	dnssd->TXTRecordGetLength = (TXTRecordGetLength_t)GetProcAddress(dnssd->module, "TXTRecordGetLength");
	146	dnssd->TXTRecordGetBytesPtr = (TXTRecordGetBytesPtr_t)GetProcAddress(dnssd->module, "TXTRecordGetBytesPtr");
	147	dnssd->TXTRecordDeallocate = (TXTRecordDeallocate_t)GetProcAddress(dnssd->module, "TXTRecordDeallocate");
	148
	149	if (!dnssd->DNSServiceRegister \|\| !dnssd->DNSServiceRefDeallocate \|\| !dnssd->TXTRecordCreate \|\|
	150	!dnssd->TXTRecordSetValue \|\| !dnssd->TXTRecordGetLength \|\| !dnssd->TXTRecordGetBytesPtr \|\|
	151	!dnssd->TXTRecordDeallocate) {
	152	if (error) *error = DNSSD_ERROR_PROCNOTFOUND;
	153	FreeLibrary(dnssd->module);
	154	free(dnssd);
	155	return NULL;
	156	}
6da21350 JVH	157	#elif USE_LIBDL
	158	dnssd->module = dlopen("libdns_sd.so", RTLD_LAZY);
	159	if (!dnssd->module) {
	160	if (error) *error = DNSSD_ERROR_LIBNOTFOUND;
	161	free(dnssd);
	162	return NULL;
	163	}
	164	dnssd->DNSServiceRegister = (DNSServiceRegister_t)dlsym(dnssd->module, "DNSServiceRegister");
	165	dnssd->DNSServiceRefDeallocate = (DNSServiceRefDeallocate_t)dlsym(dnssd->module, "DNSServiceRefDeallocate");
	166	dnssd->TXTRecordCreate = (TXTRecordCreate_t)dlsym(dnssd->module, "TXTRecordCreate");
	167	dnssd->TXTRecordSetValue = (TXTRecordSetValue_t)dlsym(dnssd->module, "TXTRecordSetValue");
	168	dnssd->TXTRecordGetLength = (TXTRecordGetLength_t)dlsym(dnssd->module, "TXTRecordGetLength");
	169	dnssd->TXTRecordGetBytesPtr = (TXTRecordGetBytesPtr_t)dlsym(dnssd->module, "TXTRecordGetBytesPtr");
	170	dnssd->TXTRecordDeallocate = (TXTRecordDeallocate_t)dlsym(dnssd->module, "TXTRecordDeallocate");
	171
	172	if (!dnssd->DNSServiceRegister \|\| !dnssd->DNSServiceRefDeallocate \|\| !dnssd->TXTRecordCreate \|\|
	173	!dnssd->TXTRecordSetValue \|\| !dnssd->TXTRecordGetLength \|\| !dnssd->TXTRecordGetBytesPtr \|\|
	174	!dnssd->TXTRecordDeallocate) {
	175	if (error) *error = DNSSD_ERROR_PROCNOTFOUND;
	176	dlclose(dnssd->module);
	177	free(dnssd);
	178	return NULL;
	179	}
2340bcd3 JVH	180	#else
	181	dnssd->DNSServiceRegister = &DNSServiceRegister;
	182	dnssd->DNSServiceRefDeallocate = &DNSServiceRefDeallocate;
	183	dnssd->TXTRecordCreate = &TXTRecordCreate;
	184	dnssd->TXTRecordSetValue = &TXTRecordSetValue;
	185	dnssd->TXTRecordGetLength = &TXTRecordGetLength;
	186	dnssd->TXTRecordGetBytesPtr = &TXTRecordGetBytesPtr;
	187	dnssd->TXTRecordDeallocate = &TXTRecordDeallocate;
	188	#endif
	189
2340bcd3 JVH	190	return dnssd;
	191	}
	192
	193	void
	194	dnssd_destroy(dnssd_t *dnssd)
	195	{
	196	if (dnssd) {
	197	#ifdef WIN32
	198	FreeLibrary(dnssd->module);
6da21350 JVH	199	#elif USE_LIBDL
6da21350 JVH	200	dlclose(dnssd->module);
2340bcd3 JVH	201	#endif
	202	free(dnssd);
	203	}
	204	}
	205
	206	int
e4169f77	207	dnssd_register_raop(dnssd_t dnssd, const char name, unsigned short port, const char *hwaddr, int hwaddrlen, int password)
2340bcd3 JVH	208	{
	209	TXTRecordRef txtRecord;
	210	char servname[MAX_SERVNAME];
	211	int ret;
	212
	213	assert(dnssd);
067f00ef JVH	214	assert(name);
067f00ef JVH	215	assert(hwaddr);
2340bcd3 JVH	216
	217	dnssd->TXTRecordCreate(&txtRecord, 0, NULL);
	218	dnssd->TXTRecordSetValue(&txtRecord, "txtvers", strlen(RAOP_TXTVERS), RAOP_TXTVERS);
	219	dnssd->TXTRecordSetValue(&txtRecord, "ch", strlen(RAOP_CH), RAOP_CH);
	220	dnssd->TXTRecordSetValue(&txtRecord, "cn", strlen(RAOP_CN), RAOP_CN);
	221	dnssd->TXTRecordSetValue(&txtRecord, "et", strlen(RAOP_ET), RAOP_ET);
	222	dnssd->TXTRecordSetValue(&txtRecord, "sv", strlen(RAOP_SV), RAOP_SV);
	223	dnssd->TXTRecordSetValue(&txtRecord, "da", strlen(RAOP_DA), RAOP_DA);
	224	dnssd->TXTRecordSetValue(&txtRecord, "sr", strlen(RAOP_SR), RAOP_SR);
	225	dnssd->TXTRecordSetValue(&txtRecord, "ss", strlen(RAOP_SS), RAOP_SS);
e4169f77 JVH	226	if (password) {
	227	dnssd->TXTRecordSetValue(&txtRecord, "pw", strlen("true"), "true");
	228	} else {
	229	dnssd->TXTRecordSetValue(&txtRecord, "pw", strlen("false"), "false");
	230	}
2340bcd3 JVH	231	dnssd->TXTRecordSetValue(&txtRecord, "vn", strlen(RAOP_VN), RAOP_VN);
	232	dnssd->TXTRecordSetValue(&txtRecord, "tp", strlen(RAOP_TP), RAOP_TP);
	233	dnssd->TXTRecordSetValue(&txtRecord, "md", strlen(RAOP_MD), RAOP_MD);
	234	dnssd->TXTRecordSetValue(&txtRecord, "vs", strlen(GLOBAL_VERSION), GLOBAL_VERSION);
e66980f2 JVH	235	dnssd->TXTRecordSetValue(&txtRecord, "sm", strlen(RAOP_SM), RAOP_SM);
e66980f2 JVH	236	dnssd->TXTRecordSetValue(&txtRecord, "ek", strlen(RAOP_EK), RAOP_EK);
2340bcd3 JVH	237
2340bcd3 JVH	238	/* Convert hardware address to string */
067f00ef	239	ret = utils_hwaddr_raop(servname, sizeof(servname), hwaddr, hwaddrlen);
2340bcd3 JVH	240	if (ret < 0) {
	241	/* FIXME: handle better */
	242	return -1;
	243	}
	244
	245	/* Check that we have bytes for 'hw@name' format */
	246	if (sizeof(servname) < strlen(servname)+1+strlen(name)+1) {
	247	/* FIXME: handle better */
	248	return -2;
	249	}
	250
	251	strncat(servname, "@", sizeof(servname)-strlen(servname)-1);
	252	strncat(servname, name, sizeof(servname)-strlen(servname)-1);
	253
	254	/* Register the service */
	255	dnssd->DNSServiceRegister(&dnssd->raopService, 0, 0,
	256	servname, "_raop._tcp",
	257	NULL, NULL,
	258	htons(port),
	259	dnssd->TXTRecordGetLength(&txtRecord),
	260	dnssd->TXTRecordGetBytesPtr(&txtRecord),
	261	NULL, NULL);
	262
	263	/* Deallocate TXT record */
	264	dnssd->TXTRecordDeallocate(&txtRecord);
	265	return 1;
	266	}
	267
	268	int
067f00ef	269	dnssd_register_airplay(dnssd_t dnssd, const char name, unsigned short port, const char *hwaddr, int hwaddrlen)
2340bcd3 JVH	270	{
	271	TXTRecordRef txtRecord;
	272	char deviceid[3*MAX_HWADDR_LEN];
	273	char features[16];
	274	int ret;
	275
	276	assert(dnssd);
067f00ef JVH	277	assert(name);
067f00ef JVH	278	assert(hwaddr);
2340bcd3 JVH	279
2340bcd3 JVH	280	/* Convert hardware address to string */
067f00ef	281	ret = utils_hwaddr_airplay(deviceid, sizeof(deviceid), hwaddr, hwaddrlen);
2340bcd3 JVH	282	if (ret < 0) {
	283	/* FIXME: handle better */
	284	return -1;
	285	}
	286
	287	features[sizeof(features)-1] = '\0';
	288	snprintf(features, sizeof(features)-1, "0x%x", GLOBAL_FEATURES);
	289
	290	dnssd->TXTRecordCreate(&txtRecord, 0, NULL);
	291	dnssd->TXTRecordSetValue(&txtRecord, "deviceid", strlen(deviceid), deviceid);
	292	dnssd->TXTRecordSetValue(&txtRecord, "features", strlen(features), features);
	293	dnssd->TXTRecordSetValue(&txtRecord, "model", strlen(GLOBAL_MODEL), GLOBAL_MODEL);
	294
	295	/* Register the service */
	296	dnssd->DNSServiceRegister(&dnssd->airplayService, 0, 0,
	297	name, "_airplay._tcp",
	298	NULL, NULL,
	299	htons(port),
	300	dnssd->TXTRecordGetLength(&txtRecord),
	301	dnssd->TXTRecordGetBytesPtr(&txtRecord),
	302	NULL, NULL);
	303
	304	/* Deallocate TXT record */
	305	dnssd->TXTRecordDeallocate(&txtRecord);
	306	return 0;
	307	}
	308
	309	void
	310	dnssd_unregister_raop(dnssd_t *dnssd)
	311	{
	312	assert(dnssd);
	313
	314	if (!dnssd->raopService) {
	315	return;
	316	}
	317
	318	dnssd->DNSServiceRefDeallocate(dnssd->raopService);
	319	dnssd->raopService = NULL;
	320	}
	321
	322	void
	323	dnssd_unregister_airplay(dnssd_t *dnssd)
	324	{
	325	assert(dnssd);
	326
	327	if (!dnssd->airplayService) {
	328	return;
	329	}
	330
	331	dnssd->DNSServiceRefDeallocate(dnssd->airplayService);
	332	dnssd->airplayService = NULL;
	333	}