[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>

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#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
bbb0ec36	20	#ifdef HAVE_CONFIG_H
92a5fb67	21	#include "config.h"
bbb0ec36	22	#endif
92a5fb67	23
2340bcd3 JVH	24	#include "dnssd.h"
	25	#include "dnssdint.h"
	26	#include "global.h"
	27	#include "compat.h"
	28	#include "utils.h"
	29
	30	#define MAX_DEVICEID 18
	31	#define MAX_SERVNAME 256
	32
6da21350 JVH	33	#define USE_LIBDL (defined(HAVE_LIBDL) && !defined(__APPLE__))
	34
	35	#if defined(WIN32) \|\| USE_LIBDL
	36	# ifdef WIN32
	37	# include <stdint.h>
	38	# if !defined(EFI32) && !defined(EFI64)
	39	# define DNSSD_STDCALL __stdcall
	40	# else
	41	# define DNSSD_STDCALL
	42	# endif
2340bcd3	43	# else
6da21350	44	# include <dlfcn.h>
427cd9fb	45	# define DNSSD_STDCALL
2340bcd3 JVH	46	# endif
	47
	48	typedef struct _DNSServiceRef_t *DNSServiceRef;
	49	typedef union _TXTRecordRef_t { char PrivateData[16]; char *ForceNaturalAlignment; } TXTRecordRef;
	50
	51	typedef uint32_t DNSServiceFlags;
	52	typedef int32_t DNSServiceErrorType;
	53
427cd9fb	54	typedef void (DNSSD_STDCALL *DNSServiceRegisterReply)
2340bcd3 JVH	55	(
	56	DNSServiceRef sdRef,
	57	DNSServiceFlags flags,
	58	DNSServiceErrorType errorCode,
	59	const char *name,
	60	const char *regtype,
	61	const char *domain,
	62	void *context
	63	);
6da21350 JVH	64
	65	#else
	66	# include <dns_sd.h>
	67	# define DNSSD_STDCALL
2340bcd3 JVH	68	#endif
2340bcd3 JVH	69
427cd9fb	70	typedef DNSServiceErrorType (DNSSD_STDCALL *DNSServiceRegister_t)
2340bcd3 JVH	71	(
	72	DNSServiceRef *sdRef,
	73	DNSServiceFlags flags,
	74	uint32_t interfaceIndex,
	75	const char *name,
	76	const char *regtype,
	77	const char *domain,
	78	const char *host,
	79	uint16_t port,
	80	uint16_t txtLen,
	81	const void *txtRecord,
	82	DNSServiceRegisterReply callBack,
	83	void *context
	84	);
427cd9fb JVH	85	typedef void (DNSSD_STDCALL *DNSServiceRefDeallocate_t)(DNSServiceRef sdRef);
427cd9fb JVH	86	typedef void (DNSSD_STDCALL *TXTRecordCreate_t)
2340bcd3 JVH	87	(
	88	TXTRecordRef *txtRecord,
	89	uint16_t bufferLen,
	90	void *buffer
	91	);
427cd9fb JVH	92	typedef void (DNSSD_STDCALL TXTRecordDeallocate_t)(TXTRecordRef txtRecord);
427cd9fb JVH	93	typedef DNSServiceErrorType (DNSSD_STDCALL *TXTRecordSetValue_t)
2340bcd3 JVH	94	(
	95	TXTRecordRef *txtRecord,
	96	const char *key,
	97	uint8_t valueSize,
	98	const void *value
	99	);
427cd9fb JVH	100	typedef uint16_t (DNSSD_STDCALL TXTRecordGetLength_t)(const TXTRecordRef txtRecord);
427cd9fb JVH	101	typedef const void * (DNSSD_STDCALL TXTRecordGetBytesPtr_t)(const TXTRecordRef txtRecord);
2340bcd3 JVH	102
	103
	104	struct dnssd_s {
	105	#ifdef WIN32
	106	HMODULE module;
6da21350 JVH	107	#elif USE_LIBDL
6da21350 JVH	108	void *module;
2340bcd3 JVH	109	#endif
	110
	111	DNSServiceRegister_t DNSServiceRegister;
	112	DNSServiceRefDeallocate_t DNSServiceRefDeallocate;
	113	TXTRecordCreate_t TXTRecordCreate;
	114	TXTRecordSetValue_t TXTRecordSetValue;
	115	TXTRecordGetLength_t TXTRecordGetLength;
	116	TXTRecordGetBytesPtr_t TXTRecordGetBytesPtr;
	117	TXTRecordDeallocate_t TXTRecordDeallocate;
	118
2340bcd3 JVH	119	DNSServiceRef raopService;
	120	DNSServiceRef airplayService;
	121	};
	122
	123
	124
	125	dnssd_t *
067f00ef	126	dnssd_init(int *error)
2340bcd3 JVH	127	{
	128	dnssd_t *dnssd;
	129
	130	if (error) *error = DNSSD_ERROR_NOERROR;
2340bcd3 JVH	131
	132	dnssd = calloc(1, sizeof(dnssd_t));
	133	if (!dnssd) {
	134	if (error) *error = DNSSD_ERROR_OUTOFMEM;
	135	return NULL;
	136	}
	137
	138	#ifdef WIN32
	139	dnssd->module = LoadLibraryA("dnssd.dll");
	140	if (!dnssd->module) {
	141	if (error) *error = DNSSD_ERROR_LIBNOTFOUND;
	142	free(dnssd);
	143	return NULL;
	144	}
	145	dnssd->DNSServiceRegister = (DNSServiceRegister_t)GetProcAddress(dnssd->module, "DNSServiceRegister");
	146	dnssd->DNSServiceRefDeallocate = (DNSServiceRefDeallocate_t)GetProcAddress(dnssd->module, "DNSServiceRefDeallocate");
	147	dnssd->TXTRecordCreate = (TXTRecordCreate_t)GetProcAddress(dnssd->module, "TXTRecordCreate");
	148	dnssd->TXTRecordSetValue = (TXTRecordSetValue_t)GetProcAddress(dnssd->module, "TXTRecordSetValue");
	149	dnssd->TXTRecordGetLength = (TXTRecordGetLength_t)GetProcAddress(dnssd->module, "TXTRecordGetLength");
	150	dnssd->TXTRecordGetBytesPtr = (TXTRecordGetBytesPtr_t)GetProcAddress(dnssd->module, "TXTRecordGetBytesPtr");
	151	dnssd->TXTRecordDeallocate = (TXTRecordDeallocate_t)GetProcAddress(dnssd->module, "TXTRecordDeallocate");
	152
	153	if (!dnssd->DNSServiceRegister \|\| !dnssd->DNSServiceRefDeallocate \|\| !dnssd->TXTRecordCreate \|\|
	154	!dnssd->TXTRecordSetValue \|\| !dnssd->TXTRecordGetLength \|\| !dnssd->TXTRecordGetBytesPtr \|\|
	155	!dnssd->TXTRecordDeallocate) {
	156	if (error) *error = DNSSD_ERROR_PROCNOTFOUND;
	157	FreeLibrary(dnssd->module);
	158	free(dnssd);
	159	return NULL;
	160	}
6da21350 JVH	161	#elif USE_LIBDL
	162	dnssd->module = dlopen("libdns_sd.so", RTLD_LAZY);
	163	if (!dnssd->module) {
	164	if (error) *error = DNSSD_ERROR_LIBNOTFOUND;
	165	free(dnssd);
	166	return NULL;
	167	}
	168	dnssd->DNSServiceRegister = (DNSServiceRegister_t)dlsym(dnssd->module, "DNSServiceRegister");
	169	dnssd->DNSServiceRefDeallocate = (DNSServiceRefDeallocate_t)dlsym(dnssd->module, "DNSServiceRefDeallocate");
	170	dnssd->TXTRecordCreate = (TXTRecordCreate_t)dlsym(dnssd->module, "TXTRecordCreate");
	171	dnssd->TXTRecordSetValue = (TXTRecordSetValue_t)dlsym(dnssd->module, "TXTRecordSetValue");
	172	dnssd->TXTRecordGetLength = (TXTRecordGetLength_t)dlsym(dnssd->module, "TXTRecordGetLength");
	173	dnssd->TXTRecordGetBytesPtr = (TXTRecordGetBytesPtr_t)dlsym(dnssd->module, "TXTRecordGetBytesPtr");
	174	dnssd->TXTRecordDeallocate = (TXTRecordDeallocate_t)dlsym(dnssd->module, "TXTRecordDeallocate");
	175
	176	if (!dnssd->DNSServiceRegister \|\| !dnssd->DNSServiceRefDeallocate \|\| !dnssd->TXTRecordCreate \|\|
	177	!dnssd->TXTRecordSetValue \|\| !dnssd->TXTRecordGetLength \|\| !dnssd->TXTRecordGetBytesPtr \|\|
	178	!dnssd->TXTRecordDeallocate) {
	179	if (error) *error = DNSSD_ERROR_PROCNOTFOUND;
	180	dlclose(dnssd->module);
	181	free(dnssd);
	182	return NULL;
	183	}
2340bcd3 JVH	184	#else
	185	dnssd->DNSServiceRegister = &DNSServiceRegister;
	186	dnssd->DNSServiceRefDeallocate = &DNSServiceRefDeallocate;
	187	dnssd->TXTRecordCreate = &TXTRecordCreate;
	188	dnssd->TXTRecordSetValue = &TXTRecordSetValue;
	189	dnssd->TXTRecordGetLength = &TXTRecordGetLength;
	190	dnssd->TXTRecordGetBytesPtr = &TXTRecordGetBytesPtr;
	191	dnssd->TXTRecordDeallocate = &TXTRecordDeallocate;
	192	#endif
	193
2340bcd3 JVH	194	return dnssd;
	195	}
	196
	197	void
	198	dnssd_destroy(dnssd_t *dnssd)
	199	{
	200	if (dnssd) {
	201	#ifdef WIN32
	202	FreeLibrary(dnssd->module);
6da21350 JVH	203	#elif USE_LIBDL
6da21350 JVH	204	dlclose(dnssd->module);
2340bcd3 JVH	205	#endif
	206	free(dnssd);
	207	}
	208	}
	209
	210	int
e4169f77	211	dnssd_register_raop(dnssd_t dnssd, const char name, unsigned short port, const char *hwaddr, int hwaddrlen, int password)
2340bcd3 JVH	212	{
	213	TXTRecordRef txtRecord;
	214	char servname[MAX_SERVNAME];
	215	int ret;
	216
	217	assert(dnssd);
067f00ef JVH	218	assert(name);
067f00ef JVH	219	assert(hwaddr);
2340bcd3 JVH	220
	221	dnssd->TXTRecordCreate(&txtRecord, 0, NULL);
	222	dnssd->TXTRecordSetValue(&txtRecord, "txtvers", strlen(RAOP_TXTVERS), RAOP_TXTVERS);
	223	dnssd->TXTRecordSetValue(&txtRecord, "ch", strlen(RAOP_CH), RAOP_CH);
	224	dnssd->TXTRecordSetValue(&txtRecord, "cn", strlen(RAOP_CN), RAOP_CN);
	225	dnssd->TXTRecordSetValue(&txtRecord, "et", strlen(RAOP_ET), RAOP_ET);
	226	dnssd->TXTRecordSetValue(&txtRecord, "sv", strlen(RAOP_SV), RAOP_SV);
	227	dnssd->TXTRecordSetValue(&txtRecord, "da", strlen(RAOP_DA), RAOP_DA);
	228	dnssd->TXTRecordSetValue(&txtRecord, "sr", strlen(RAOP_SR), RAOP_SR);
	229	dnssd->TXTRecordSetValue(&txtRecord, "ss", strlen(RAOP_SS), RAOP_SS);
e4169f77 JVH	230	if (password) {
	231	dnssd->TXTRecordSetValue(&txtRecord, "pw", strlen("true"), "true");
	232	} else {
	233	dnssd->TXTRecordSetValue(&txtRecord, "pw", strlen("false"), "false");
	234	}
2340bcd3 JVH	235	dnssd->TXTRecordSetValue(&txtRecord, "vn", strlen(RAOP_VN), RAOP_VN);
	236	dnssd->TXTRecordSetValue(&txtRecord, "tp", strlen(RAOP_TP), RAOP_TP);
	237	dnssd->TXTRecordSetValue(&txtRecord, "md", strlen(RAOP_MD), RAOP_MD);
	238	dnssd->TXTRecordSetValue(&txtRecord, "vs", strlen(GLOBAL_VERSION), GLOBAL_VERSION);
e66980f2 JVH	239	dnssd->TXTRecordSetValue(&txtRecord, "sm", strlen(RAOP_SM), RAOP_SM);
e66980f2 JVH	240	dnssd->TXTRecordSetValue(&txtRecord, "ek", strlen(RAOP_EK), RAOP_EK);
2340bcd3 JVH	241
2340bcd3 JVH	242	/* Convert hardware address to string */
067f00ef	243	ret = utils_hwaddr_raop(servname, sizeof(servname), hwaddr, hwaddrlen);
2340bcd3 JVH	244	if (ret < 0) {
	245	/* FIXME: handle better */
	246	return -1;
	247	}
	248
	249	/* Check that we have bytes for 'hw@name' format */
	250	if (sizeof(servname) < strlen(servname)+1+strlen(name)+1) {
	251	/* FIXME: handle better */
	252	return -2;
	253	}
	254
	255	strncat(servname, "@", sizeof(servname)-strlen(servname)-1);
	256	strncat(servname, name, sizeof(servname)-strlen(servname)-1);
	257
	258	/* Register the service */
	259	dnssd->DNSServiceRegister(&dnssd->raopService, 0, 0,
	260	servname, "_raop._tcp",
	261	NULL, NULL,
	262	htons(port),
	263	dnssd->TXTRecordGetLength(&txtRecord),
	264	dnssd->TXTRecordGetBytesPtr(&txtRecord),
	265	NULL, NULL);
	266
	267	/* Deallocate TXT record */
	268	dnssd->TXTRecordDeallocate(&txtRecord);
	269	return 1;
	270	}
	271
	272	int
067f00ef	273	dnssd_register_airplay(dnssd_t dnssd, const char name, unsigned short port, const char *hwaddr, int hwaddrlen)
2340bcd3 JVH	274	{
	275	TXTRecordRef txtRecord;
	276	char deviceid[3*MAX_HWADDR_LEN];
	277	char features[16];
	278	int ret;
	279
	280	assert(dnssd);
067f00ef JVH	281	assert(name);
067f00ef JVH	282	assert(hwaddr);
2340bcd3 JVH	283
2340bcd3 JVH	284	/* Convert hardware address to string */
067f00ef	285	ret = utils_hwaddr_airplay(deviceid, sizeof(deviceid), hwaddr, hwaddrlen);
2340bcd3 JVH	286	if (ret < 0) {
	287	/* FIXME: handle better */
	288	return -1;
	289	}
	290
	291	features[sizeof(features)-1] = '\0';
	292	snprintf(features, sizeof(features)-1, "0x%x", GLOBAL_FEATURES);
	293
	294	dnssd->TXTRecordCreate(&txtRecord, 0, NULL);
	295	dnssd->TXTRecordSetValue(&txtRecord, "deviceid", strlen(deviceid), deviceid);
	296	dnssd->TXTRecordSetValue(&txtRecord, "features", strlen(features), features);
	297	dnssd->TXTRecordSetValue(&txtRecord, "model", strlen(GLOBAL_MODEL), GLOBAL_MODEL);
	298
	299	/* Register the service */
	300	dnssd->DNSServiceRegister(&dnssd->airplayService, 0, 0,
	301	name, "_airplay._tcp",
	302	NULL, NULL,
	303	htons(port),
	304	dnssd->TXTRecordGetLength(&txtRecord),
	305	dnssd->TXTRecordGetBytesPtr(&txtRecord),
	306	NULL, NULL);
	307
	308	/* Deallocate TXT record */
	309	dnssd->TXTRecordDeallocate(&txtRecord);
	310	return 0;
	311	}
	312
	313	void
	314	dnssd_unregister_raop(dnssd_t *dnssd)
	315	{
	316	assert(dnssd);
	317
	318	if (!dnssd->raopService) {
	319	return;
	320	}
	321
	322	dnssd->DNSServiceRefDeallocate(dnssd->raopService);
	323	dnssd->raopService = NULL;
	324	}
	325
	326	void
	327	dnssd_unregister_airplay(dnssd_t *dnssd)
	328	{
	329	assert(dnssd);
	330
	331	if (!dnssd->airplayService) {
	332	return;
	333	}
	334
	335	dnssd->DNSServiceRefDeallocate(dnssd->airplayService);
	336	dnssd->airplayService = NULL;
	337	}