conky/src/libmpdclient.cc

/* -*- mode: c++; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
 * vim: ts=4 sw=4 noet ai cindent syntax=cpp
 *
 * libmpdclient
 * (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: http://www.musicpd.org
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Music Player Daemon nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "conky.h"
#include "libmpdclient.h"

#include <errno.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/param.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>

#ifdef WIN32
#  include <ws2tcpip.h>
#  include <winsock.h>
#else
#  include <netinet/in.h>
#  include <arpa/inet.h>
#  include <sys/socket.h>
#  include <sys/un.h>
#  include <netdb.h>
#endif

/* (bits + 1) / 3 (plus the sign character) */
#define INTLEN		((sizeof(int)		* CHAR_BIT + 1) / 3 + 1)
#define LONGLONGLEN	((sizeof(long long)	* CHAR_BIT + 1) / 3 + 1)

#define COMMAND_LIST	1
#define COMMAND_LIST_OK	2

#ifndef MPD_NO_GAI
#  ifdef AI_ADDRCONFIG
#    define MPD_HAVE_GAI
#  endif
#endif

#ifndef MSG_DONTWAIT
#  define MSG_DONTWAIT 0
#endif

#ifdef WIN32
#  define SELECT_ERRNO_IGNORE	(errno == WSAEINTR || errno == WSAEINPROGRESS)
#  define SENDRECV_ERRNO_IGNORE	SELECT_ERRNO_IGNORE
#else
#  define SELECT_ERRNO_IGNORE	(errno == EINTR)
#  define SENDRECV_ERRNO_IGNORE	(errno == EINTR || errno == EAGAIN)
#  define winsock_dll_error(c)	0
#  define closesocket(s)		close(s)
#  define WSACleanup()			do { /* nothing */ } while (0)
#endif

#ifdef WIN32
static int winsock_dll_error(mpd_Connection *connection)
{
	WSADATA wsaData;

	if ((WSAStartup(MAKEWORD(2, 2), &wsaData)) != 0
			|| LOBYTE(wsaData.wVersion) != 2
			|| HIBYTE(wsaData.wVersion) != 2) {
		strcpy(connection->errorStr, "Could not find usable WinSock DLL.");
		connection->error = MPD_ERROR_SYSTEM;
		return 1;
	}
	return 0;
}

static int do_connect_fail(mpd_Connection *connection,
		const struct sockaddr *serv_addr, int addrlen)
{
	int iMode = 1;	/* 0 = blocking, else non-blocking */

	ioctlsocket(connection->sock, FIONBIO, (u_long FAR *) &iMode);
	return (connect(connection->sock, serv_addr, addrlen) == SOCKET_ERROR
		&& WSAGetLastError() != WSAEWOULDBLOCK);
}
#else /* !WIN32 (sane operating systems) */
static int do_connect_fail(mpd_Connection *connection,
		const struct sockaddr *serv_addr, int addrlen)
{
	int flags = fcntl(connection->sock, F_GETFL, 0);

	fcntl(connection->sock, F_SETFL, flags | O_NONBLOCK);
	return (connect(connection->sock, serv_addr, addrlen) < 0
		&& errno != EINPROGRESS);
}
#endif /* !WIN32 */

static int uds_connect(mpd_Connection *connection, const char *host,
		float timeout)
{
	struct sockaddr_un addr;

	strncpy(addr.sun_path, host, sizeof(addr.sun_path)-1);
	addr.sun_family = AF_UNIX;
	addr.sun_path[sizeof(addr.sun_path)-1] = 0;
	connection->sock = socket(AF_UNIX, SOCK_STREAM, 0);

	if (connection->sock < 0) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"problems creating socket: %s", strerror(errno));
		connection->error = MPD_ERROR_SYSTEM;
		return -1;
	}

	mpd_setConnectionTimeout(connection, timeout);

	/* connect stuff */
	if (do_connect_fail(connection, (struct sockaddr *)&addr, SUN_LEN(&addr))) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"problems connecting socket: %s", strerror(errno));
		closesocket(connection->sock);
		connection->sock = -1;
		connection->error = MPD_ERROR_SYSTEM;
		return -1;
	}

	return 0;
}

#ifdef MPD_HAVE_GAI
static int mpd_connect(mpd_Connection *connection, const char *host, int port,
		float timeout)
{
	int error;
	char service[INTLEN + 1];
	struct addrinfo hints;
	struct addrinfo *res = NULL;
	struct addrinfo *addrinfo = NULL;

	if (*host == '/')
		return uds_connect(connection, host, timeout);

	/* Setup hints */
	hints.ai_flags		= AI_ADDRCONFIG;
	hints.ai_family		= AF_UNSPEC;
	hints.ai_socktype	= SOCK_STREAM;
	hints.ai_protocol	= IPPROTO_TCP;
	hints.ai_addrlen	= 0;
	hints.ai_addr		= NULL;
	hints.ai_canonname	= NULL;
	hints.ai_next		= NULL;

	snprintf(service, sizeof(service), "%i", port);

	error = getaddrinfo(host, service, &hints, &addrinfo);

	if (error) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"host \"%s\" not found: %s", host, gai_strerror(error));
		connection->error = MPD_ERROR_UNKHOST;
		return -1;
	}

	for (res = addrinfo; res; res = res->ai_next) {
		/* create socket */
		if (connection->sock > -1) {
			closesocket(connection->sock);
		}
		connection->sock = socket(res->ai_family, SOCK_STREAM,
			res->ai_protocol);
		if (connection->sock < 0) {
			snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"problems creating socket: %s", strerror(errno));
			connection->error = MPD_ERROR_SYSTEM;
			freeaddrinfo(addrinfo);
			return -1;
		}

		mpd_setConnectionTimeout(connection, timeout);

		/* connect stuff */
		if (do_connect_fail(connection, res->ai_addr, res->ai_addrlen)) {
			/* try the next address family */
			closesocket(connection->sock);
			connection->sock = -1;
			continue;
		}
	}

	freeaddrinfo(addrinfo);

	if (connection->sock < 0) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"problems connecting to \"%s\" on port %i: %s", host, port,
			strerror(errno));
		connection->error = MPD_ERROR_CONNPORT;

		return -1;
	}

	return 0;
}
#else /* !MPD_HAVE_GAI */
static int mpd_connect(mpd_Connection *connection, const char *host, int port,
		float timeout)
{
	struct hostent he, *he_res = 0;
	int he_errno;
	char hostbuff[2048];
	struct sockaddr *dest;
	int destlen;
	struct sockaddr_in sin;

	if (*host == '/')
		return uds_connect(connection, host, timeout);

#ifdef HAVE_GETHOSTBYNAME_R
		if (gethostbyname_r(rhost, &he, hostbuff, sizeof(hostbuff), &he_res, &he_errno)) {	// get the host info
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"%s ('%s')", hstrerror(h_errno), host);
		connection->error = MPD_ERROR_UNKHOST;
		return -1;
	}
#else /* HAVE_GETHOSTBYNAME_R */
	if (!(he_res = gethostbyname(host))) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"host \"%s\" not found", host);
		connection->error = MPD_ERROR_UNKHOST;
		return -1;
	}
#endif /* HAVE_GETHOSTBYNAME_R */

	memset(&sin, 0, sizeof(struct sockaddr_in));
	/* dest.sin_family = he_res->h_addrtype; */
	sin.sin_family = AF_INET;
	sin.sin_port = htons(port);

	switch (he_res->h_addrtype) {
		case AF_INET:
			memcpy((char *) &sin.sin_addr.s_addr, (char *) he_res->h_addr,
				he_res->h_length);
			dest = (struct sockaddr *) &sin;
			destlen = sizeof(struct sockaddr_in);
			break;
		default:
			strcpy(connection->errorStr, "address type is not IPv4");
			connection->error = MPD_ERROR_SYSTEM;
			return -1;
			break;
	}

	if (connection->sock > -1) {
		closesocket(connection->sock);
	}
	if ((connection->sock = socket(dest->sa_family, SOCK_STREAM, 0)) < 0) {
		strcpy(connection->errorStr, "problems creating socket");
		connection->error = MPD_ERROR_SYSTEM;
		return -1;
	}

	mpd_setConnectionTimeout(connection, timeout);

	/* connect stuff */
	if (do_connect_fail(connection, dest, destlen)) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"problems connecting to \"%s\" on port %i", host, port);
		connection->error = MPD_ERROR_CONNPORT;
		return -1;
	}

	return 0;
}
#endif /* !MPD_HAVE_GAI */

const char *mpdTagItemKeys[MPD_TAG_NUM_OF_ITEM_TYPES] = {
	"Artist",
	"Album",
	"Title",
	"Track",
	"Name",
	"Genre",
	"Date",
	"Composer",
	"Performer",
	"Comment",
	"Disc",
	"Filename",
	"Any"
};

static char *mpd_sanitizeArg(const char *arg)
{
	size_t i;
	char *ret;
	register const char *c;
	register char *rc;

	/* instead of counting in that loop above,
	 * just use a bit more memory and halve running time */
	ret = (char*) malloc(strlen(arg) * 2 + 1);

	c = arg;
	rc = ret;
	for (i = strlen(arg) + 1; i != 0; --i) {
		if (*c == '"' || *c == '\\') {
			*rc++ = '\\';
		}
		*(rc++) = *(c++);
	}

	return ret;
}

static mpd_ReturnElement *mpd_newReturnElement(const char *name,
		const char *value)
{
	mpd_ReturnElement *ret = (mpd_ReturnElement*) malloc(sizeof(mpd_ReturnElement));

	ret->name = strndup(name, text_buffer_size.get(*state));
	ret->value = strndup(value, text_buffer_size.get(*state));

	return ret;
}

static void mpd_freeReturnElement(mpd_ReturnElement *re)
{
	free(re->name);
	free(re->value);
	free(re);
}

void mpd_setConnectionTimeout(mpd_Connection *connection, float timeout)
{
	connection->timeout.tv_sec = (int) timeout;
	connection->timeout.tv_usec =
		(int) ((timeout - connection->timeout.tv_sec) * 1e6 + 0.5);
}

static int mpd_parseWelcome(mpd_Connection *connection, const char *host,
		int port, /* char *rt, */ char *output)
{
	char *tmp;
	char *test;
	int i;

	if (strncmp(output, MPD_WELCOME_MESSAGE, strlen(MPD_WELCOME_MESSAGE))) {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"mpd not running on port %i on host \"%s\"", port, host);
		connection->error = MPD_ERROR_NOTMPD;
		return 1;
	}

	tmp = &output[strlen(MPD_WELCOME_MESSAGE)];

	for (i = 0; i < 3; i++) {
		if (tmp) {
			connection->version[i] = strtol(tmp, &test, 10);
		}

		if (!tmp || (test[0] != '.' && test[0] != '\0')) {
			snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"error parsing version number at \"%s\"",
				&output[strlen(MPD_WELCOME_MESSAGE)]);
			connection->error = MPD_ERROR_NOTMPD;
			return 1;
		}
		tmp = ++test;
	}

	return 0;
}

mpd_Connection *mpd_newConnection(const char *host, int port, float timeout)
{
	int err;
	char *rt;
	char *output = NULL;
	mpd_Connection *connection = (mpd_Connection*) malloc(sizeof(mpd_Connection));
	struct timeval tv;
	fd_set fds;

	strcpy(connection->buffer, "");
	connection->buflen = 0;
	connection->bufstart = 0;
	strcpy(connection->errorStr, "");
	connection->error = 0;
	connection->doneProcessing = 0;
	connection->commandList = 0;
	connection->listOks = 0;
	connection->doneListOk = 0;
	connection->sock = -1;
	connection->returnElement = NULL;
	connection->request = NULL;

	if (winsock_dll_error(connection)) {
		return connection;
	}

	if (mpd_connect(connection, host, port, timeout) < 0) {
		return connection;
	}

	while (!(rt = strstr(connection->buffer, "\n"))) {
		tv.tv_sec = connection->timeout.tv_sec;
		tv.tv_usec = connection->timeout.tv_usec;
		FD_ZERO(&fds);
		FD_SET(connection->sock, &fds);
		if ((err = select(connection->sock + 1, &fds, NULL, NULL, &tv)) == 1) {
			int readed;

			readed = recv(connection->sock,
				&(connection->buffer[connection->buflen]),
				MPD_BUFFER_MAX_LENGTH - connection->buflen, 0);
			if (readed <= 0) {
				snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
					"problems getting a response from \"%s\" on port %i : %s",
					host, port, strerror(errno));
				connection->error = MPD_ERROR_NORESPONSE;
				return connection;
			}
			connection->buflen += readed;
			connection->buffer[connection->buflen] = '\0';
		} else if (err < 0) {
			if (SELECT_ERRNO_IGNORE) {
				continue;
			}
			snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"problems connecting to \"%s\" on port %i", host, port);
			connection->error = MPD_ERROR_CONNPORT;
			return connection;
		} else {
			snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"timeout in attempting to get a response from \"%s\" on "
				"port %i", host, port);
			connection->error = MPD_ERROR_NORESPONSE;
			return connection;
		}
	}

	*rt = '\0';
	output = strndup(connection->buffer, text_buffer_size.get(*state));
	strcpy(connection->buffer, rt + 1);
	connection->buflen = strlen(connection->buffer);

	if (mpd_parseWelcome(connection, host, port, /* rt, */ output) == 0) {
		connection->doneProcessing = 1;
	}

	free(output);

	return connection;
}

void mpd_clearError(mpd_Connection *connection)
{
	connection->error = 0;
	connection->errorStr[0] = '\0';
}

void mpd_closeConnection(mpd_Connection *connection)
{
	closesocket(connection->sock);
	free_and_zero(connection->returnElement);
	free_and_zero(connection->request);
	free(connection);
	WSACleanup();
}

static void mpd_executeCommand(mpd_Connection *connection, const char *command)
{
	int ret;
	struct timeval tv;
	fd_set fds;
	const char *commandPtr = command;
	int commandLen = strlen(command);

	if (!connection->doneProcessing && !connection->commandList) {
		strcpy(connection->errorStr, "not done processing current command");
		connection->error = 1;
		return;
	}

	mpd_clearError(connection);

	FD_ZERO(&fds);
	FD_SET(connection->sock, &fds);
	tv.tv_sec = connection->timeout.tv_sec;
	tv.tv_usec = connection->timeout.tv_usec;

	while ((ret = select(connection->sock + 1, NULL, &fds, NULL, &tv) == 1)
			|| (ret == -1 && SELECT_ERRNO_IGNORE)) {
		ret = send(connection->sock, commandPtr, commandLen, MSG_DONTWAIT);
		if (ret <= 0) {
			if (SENDRECV_ERRNO_IGNORE) {
				continue;
			}
			snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
				"problems giving command \"%s\"", command);
			connection->error = MPD_ERROR_SENDING;
			return;
		} else {
			commandPtr += ret;
			commandLen -= ret;
		}

		if (commandLen <= 0) {
			break;
		}
	}

	if (commandLen > 0) {
		perror("");
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"timeout sending command \"%s\"", command);
		connection->error = MPD_ERROR_TIMEOUT;
		return;
	}

	if (!connection->commandList) {
		connection->doneProcessing = 0;
	} else if (connection->commandList == COMMAND_LIST_OK) {
		connection->listOks++;
	}
}

static void mpd_getNextReturnElement(mpd_Connection *connection)
{
	char *output = NULL;
	char *rt = NULL;
	char *name = NULL;
	char *value = NULL;
	fd_set fds;
	struct timeval tv;
	char *tok = NULL;
	int readed;
	char *bufferCheck = NULL;
	int err;
	int pos;

	if (connection->returnElement) {
		mpd_freeReturnElement(connection->returnElement);
	}
	connection->returnElement = NULL;

	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		strcpy(connection->errorStr,
			"already done processing current command");
		connection->error = 1;
		return;
	}

	bufferCheck = connection->buffer + connection->bufstart;
	while (connection->bufstart >= connection->buflen
			|| !(rt = strchr(bufferCheck, '\n'))) {
		if (connection->buflen >= MPD_BUFFER_MAX_LENGTH) {
			memmove(connection->buffer,
				connection->buffer + connection->bufstart,
				connection->buflen - connection->bufstart + 1);
			connection->buflen -= connection->bufstart;
			connection->bufstart = 0;
		}
		if (connection->buflen >= MPD_BUFFER_MAX_LENGTH) {
			strcpy(connection->errorStr, "buffer overrun");
			connection->error = MPD_ERROR_BUFFEROVERRUN;
			connection->doneProcessing = 1;
			connection->doneListOk = 0;
			return;
		}
		bufferCheck = connection->buffer + connection->buflen;
		tv.tv_sec = connection->timeout.tv_sec;
		tv.tv_usec = connection->timeout.tv_usec;
		FD_ZERO(&fds);
		FD_SET(connection->sock, &fds);
		if ((err = select(connection->sock + 1, &fds, NULL, NULL, &tv) == 1)) {
			readed = recv(connection->sock,
				connection->buffer + connection->buflen,
				MPD_BUFFER_MAX_LENGTH - connection->buflen, MSG_DONTWAIT);
			if (readed < 0 && SENDRECV_ERRNO_IGNORE) {
				continue;
			}
			if (readed <= 0) {
				strcpy(connection->errorStr, "connection closed");
				connection->error = MPD_ERROR_CONNCLOSED;
				connection->doneProcessing = 1;
				connection->doneListOk = 0;
				return;
			}
			connection->buflen += readed;
			connection->buffer[connection->buflen] = '\0';
		} else if (err < 0 && SELECT_ERRNO_IGNORE) {
			continue;
		} else {
			strcpy(connection->errorStr, "connection timeout");
			connection->error = MPD_ERROR_TIMEOUT;
			connection->doneProcessing = 1;
			connection->doneListOk = 0;
			return;
		}
	}

	*rt = '\0';
	output = connection->buffer + connection->bufstart;
	connection->bufstart = rt - connection->buffer + 1;

	if (strcmp(output, "OK") == 0) {
		if (connection->listOks > 0) {
			strcpy(connection->errorStr, "expected more list_OK's");
			connection->error = 1;
		}
		connection->listOks = 0;
		connection->doneProcessing = 1;
		connection->doneListOk = 0;
		return;
	}

	if (strcmp(output, "list_OK") == 0) {
		if (!connection->listOks) {
			strcpy(connection->errorStr, "got an unexpected list_OK");
			connection->error = 1;
		} else {
			connection->doneListOk = 1;
			connection->listOks--;
		}
		return;
	}

	if (strncmp(output, "ACK", strlen("ACK")) == 0) {
		char *test;
		char *needle;
		int val;

		strcpy(connection->errorStr, output);
		connection->error = MPD_ERROR_ACK;
		connection->errorCode = MPD_ACK_ERROR_UNK;
		connection->errorAt = MPD_ERROR_AT_UNK;
		connection->doneProcessing = 1;
		connection->doneListOk = 0;

		needle = strchr(output, '[');
		if (!needle) {
			return;
		}
		val = strtol(needle + 1, &test, 10);
		if (*test != '@') {
			return;
		}
		connection->errorCode = val;
		val = strtol(test + 1, &test, 10);
		if (*test != ']') {
			return;
		}
		connection->errorAt = val;
		return;
	}

	tok = strchr(output, ':');
	if (!tok) {
		return;
	}
	pos = tok - output;
	value = ++tok;
	name = output;
	name[pos] = '\0';

	if (value[0] == ' ') {
		connection->returnElement = mpd_newReturnElement(name, &(value[1]));
	} else {
		snprintf(connection->errorStr, MPD_ERRORSTR_MAX_LENGTH,
			"error parsing: %s:%s", name, value);
		connection->error = 1;
	}
}

void mpd_finishCommand(mpd_Connection *connection)
{
	while (!connection->doneProcessing) {
		if (connection->doneListOk) {
			connection->doneListOk = 0;
		}
		mpd_getNextReturnElement(connection);
	}
}

static void mpd_finishListOkCommand(mpd_Connection *connection)
{
	while (!connection->doneProcessing && connection->listOks
			&& !connection->doneListOk) {
		mpd_getNextReturnElement(connection);
	}
}

int mpd_nextListOkCommand(mpd_Connection *connection)
{
	mpd_finishListOkCommand(connection);
	if (!connection->doneProcessing) {
		connection->doneListOk = 0;
	}
	if (connection->listOks == 0 || connection->doneProcessing) {
		return -1;
	}
	return 0;
}

void mpd_sendStatusCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "status\n");
}

mpd_Status *mpd_getStatus(mpd_Connection *connection)
{
	mpd_Status *status;

	/* mpd_executeCommand(connection, "status\n");
	if (connection->error) {
		return NULL;
	} */

	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		return NULL;
	}

	if (!connection->returnElement) {
		mpd_getNextReturnElement(connection);
	}

	status = (mpd_Status *) malloc(sizeof(mpd_Status));
	status->volume = -1;
	status->repeat = 0;
	status->random = 0;
	status->playlist = -1;
	status->playlistLength = -1;
	status->state = -1;
	status->song = 0;
	status->songid = 0;
	status->elapsedTime = 0;
	status->totalTime = 0;
	status->bitRate = 0;
	status->sampleRate = 0;
	status->bits = 0;
	status->channels = 0;
	status->crossfade = -1;
	status->error = NULL;
	status->updatingDb = 0;

	if (connection->error) {
		free(status);
		return NULL;
	}
	while (connection->returnElement) {
		mpd_ReturnElement *re = connection->returnElement;

		if (strcmp(re->name, "volume") == 0) {
			status->volume = atoi(re->value);
		} else if (strcmp(re->name, "repeat") == 0) {
			status->repeat = atoi(re->value);
		} else if (strcmp(re->name, "random") == 0) {
			status->random = atoi(re->value);
		} else if (strcmp(re->name, "playlist") == 0) {
			status->playlist = strtol(re->value, NULL, 10);
		} else if (strcmp(re->name, "playlistlength") == 0) {
			status->playlistLength = atoi(re->value);
		} else if (strcmp(re->name, "bitrate") == 0) {
			status->bitRate = atoi(re->value);
		} else if (strcmp(re->name, "state") == 0) {
			if (strcmp(re->value, "play") == 0) {
				status->state = MPD_STATUS_STATE_PLAY;
			} else if (strcmp(re->value, "stop") == 0) {
				status->state = MPD_STATUS_STATE_STOP;
			} else if (strcmp(re->value, "pause") == 0) {
				status->state = MPD_STATUS_STATE_PAUSE;
			} else {
				status->state = MPD_STATUS_STATE_UNKNOWN;
			}
		} else if (strcmp(re->name, "song") == 0) {
			status->song = atoi(re->value);
		} else if (strcmp(re->name, "songid") == 0) {
			status->songid = atoi(re->value);
		} else if (strcmp(re->name, "time") == 0) {
			char *tok = strchr(re->value, ':');

			/* the second strchr below is a safety check */
			if (tok && (strchr(tok, 0) > (tok + 1))) {
				/* atoi stops at the first non-[0-9] char: */
				status->elapsedTime = atoi(re->value);
				status->totalTime = atoi(tok + 1);
			}
		} else if (strcmp(re->name, "error") == 0) {
			status->error = strndup(re->value, text_buffer_size.get(*state));
		} else if (strcmp(re->name, "xfade") == 0) {
			status->crossfade = atoi(re->value);
		} else if (strcmp(re->name, "updating_db") == 0) {
			status->updatingDb = atoi(re->value);
		} else if (strcmp(re->name, "audio") == 0) {
			char *tok = strchr(re->value, ':');

			if (tok && (strchr(tok, 0) > (tok + 1))) {
				status->sampleRate = atoi(re->value);
				status->bits = atoi(++tok);
				tok = strchr(tok, ':');
				if (tok && (strchr(tok, 0) > (tok + 1))) {
					status->channels = atoi(tok + 1);
				}
			}
		}

		mpd_getNextReturnElement(connection);
		if (connection->error) {
			free(status);
			return NULL;
		}
	}

	if (connection->error) {
		free(status);
		return NULL;
	} else if (status->state < 0) {
		strcpy(connection->errorStr, "state not found");
		connection->error = 1;
		free(status);
		return NULL;
	}

	return status;
}

void mpd_freeStatus(mpd_Status *status)
{
	free_and_zero(status->error);
	free(status);
}

void mpd_sendStatsCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "stats\n");
}

mpd_Stats *mpd_getStats(mpd_Connection *connection)
{
	mpd_Stats *stats;

	/* mpd_executeCommand(connection, "stats\n");
	if (connection->error) {
		return NULL;
	} */

	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		return NULL;
	}

	if (!connection->returnElement) {
		mpd_getNextReturnElement(connection);
	}

	stats = (mpd_Stats *) malloc(sizeof(mpd_Stats));
	stats->numberOfArtists = 0;
	stats->numberOfAlbums = 0;
	stats->numberOfSongs = 0;
	stats->uptime = 0;
	stats->dbUpdateTime = 0;
	stats->playTime = 0;
	stats->dbPlayTime = 0;

	if (connection->error) {
		free(stats);
		return NULL;
	}
	while (connection->returnElement) {
		mpd_ReturnElement *re = connection->returnElement;

		if (strcmp(re->name, "artists") == 0) {
			stats->numberOfArtists = atoi(re->value);
		} else if (strcmp(re->name, "albums") == 0) {
			stats->numberOfAlbums = atoi(re->value);
		} else if (strcmp(re->name, "songs") == 0) {
			stats->numberOfSongs = atoi(re->value);
		} else if (strcmp(re->name, "uptime") == 0) {
			stats->uptime = strtol(re->value, NULL, 10);
		} else if (strcmp(re->name, "db_update") == 0) {
			stats->dbUpdateTime = strtol(re->value, NULL, 10);
		} else if (strcmp(re->name, "playtime") == 0) {
			stats->playTime = strtol(re->value, NULL, 10);
		} else if (strcmp(re->name, "db_playtime") == 0) {
			stats->dbPlayTime = strtol(re->value, NULL, 10);
		}

		mpd_getNextReturnElement(connection);
		if (connection->error) {
			free(stats);
			return NULL;
		}
	}

	if (connection->error) {
		free(stats);
		return NULL;
	}

	return stats;
}

void mpd_freeStats(mpd_Stats *stats)
{
	free(stats);
}

mpd_SearchStats *mpd_getSearchStats(mpd_Connection *connection)
{
	mpd_SearchStats *stats;
	mpd_ReturnElement *re;

	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		return NULL;
	}

	if (!connection->returnElement) {
		mpd_getNextReturnElement(connection);
	}

	if (connection->error) {
		return NULL;
	}

	stats = (mpd_SearchStats *) malloc(sizeof(mpd_SearchStats));
	stats->numberOfSongs = 0;
	stats->playTime = 0;

	while (connection->returnElement) {
		re = connection->returnElement;

		if (strcmp(re->name, "songs") == 0) {
			stats->numberOfSongs = atoi(re->value);
		} else if (strcmp(re->name, "playtime") == 0) {
			stats->playTime = strtol(re->value, NULL, 10);
		}

		mpd_getNextReturnElement(connection);
		if (connection->error) {
			free(stats);
			return NULL;
		}
	}

	if (connection->error) {
		free(stats);
		return NULL;
	}

	return stats;
}

void mpd_freeSearchStats(mpd_SearchStats *stats)
{
	free(stats);
}

static void mpd_initSong(mpd_Song *song)
{
	song->file = NULL;
	song->artist = NULL;
	song->album = NULL;
	song->track = NULL;
	song->title = NULL;
	song->name = NULL;
	song->date = NULL;
	/* added by Qball */
	song->genre = NULL;
	song->composer = NULL;
	song->performer = NULL;
	song->disc = NULL;
	song->comment = NULL;

	song->time = MPD_SONG_NO_TIME;
	song->pos = MPD_SONG_NO_NUM;
	song->id = MPD_SONG_NO_ID;
}

static void mpd_finishSong(mpd_Song *song)
{
	free_and_zero(song->file);
	free_and_zero(song->artist);
	free_and_zero(song->album);
	free_and_zero(song->title);
	free_and_zero(song->track);
	free_and_zero(song->name);
	free_and_zero(song->date);
	free_and_zero(song->genre);
	free_and_zero(song->composer);
	free_and_zero(song->disc);
	free_and_zero(song->comment);
}

mpd_Song *mpd_newSong(void)
{
	mpd_Song *ret = (mpd_Song *) malloc(sizeof(mpd_Song));

	mpd_initSong(ret);

	return ret;
}

void mpd_freeSong(mpd_Song *song)
{
	mpd_finishSong(song);
	free(song);
}

mpd_Song *mpd_songDup(mpd_Song *song)
{
	mpd_Song *ret = mpd_newSong();

	if (song->file) {
		ret->file = strndup(song->file, text_buffer_size.get(*state));
	}
	if (song->artist) {
		ret->artist = strndup(song->artist, text_buffer_size.get(*state));
	}
	if (song->album) {
		ret->album = strndup(song->album, text_buffer_size.get(*state));
	}
	if (song->title) {
		ret->title = strndup(song->title, text_buffer_size.get(*state));
	}
	if (song->track) {
		ret->track = strndup(song->track, text_buffer_size.get(*state));
	}
	if (song->name) {
		ret->name = strndup(song->name, text_buffer_size.get(*state));
	}
	if (song->date) {
		ret->date = strndup(song->date, text_buffer_size.get(*state));
	}
	if (song->genre) {
		ret->genre = strndup(song->genre, text_buffer_size.get(*state));
	}
	if (song->composer) {
		ret->composer = strndup(song->composer, text_buffer_size.get(*state));
	}
	if (song->disc) {
		ret->disc = strndup(song->disc, text_buffer_size.get(*state));
	}
	if (song->comment) {
		ret->comment = strndup(song->comment, text_buffer_size.get(*state));
	}
	ret->time = song->time;
	ret->pos = song->pos;
	ret->id = song->id;

	return ret;
}

static void mpd_initDirectory(mpd_Directory *directory)
{
	directory->path = NULL;
}

static void mpd_finishDirectory(mpd_Directory *directory)
{
	free_and_zero(directory->path);
}

mpd_Directory *mpd_newDirectory(void)
{
	mpd_Directory *directory = (mpd_Directory *) malloc(sizeof(mpd_Directory));

	mpd_initDirectory(directory);

	return directory;
}

void mpd_freeDirectory(mpd_Directory *directory)
{
	mpd_finishDirectory(directory);

	free(directory);
}

mpd_Directory *mpd_directoryDup(mpd_Directory *directory)
{
	mpd_Directory *ret = mpd_newDirectory();

	if (directory->path) {
		ret->path = strndup(directory->path, text_buffer_size.get(*state));
	}

	return ret;
}

static void mpd_initPlaylistFile(mpd_PlaylistFile *playlist)
{
	playlist->path = NULL;
}

static void mpd_finishPlaylistFile(mpd_PlaylistFile *playlist)
{
	free_and_zero(playlist->path);
}

mpd_PlaylistFile *mpd_newPlaylistFile(void)
{
	mpd_PlaylistFile *playlist = (mpd_PlaylistFile *) malloc(sizeof(mpd_PlaylistFile));

	mpd_initPlaylistFile(playlist);

	return playlist;
}

void mpd_freePlaylistFile(mpd_PlaylistFile *playlist)
{
	mpd_finishPlaylistFile(playlist);
	free(playlist);
}

mpd_PlaylistFile *mpd_playlistFileDup(mpd_PlaylistFile *playlist)
{
	mpd_PlaylistFile *ret = mpd_newPlaylistFile();

	if (playlist->path) {
		ret->path = strndup(playlist->path, text_buffer_size.get(*state));
	}

	return ret;
}

static void mpd_initInfoEntity(mpd_InfoEntity *entity)
{
	entity->info.directory = NULL;
}

static void mpd_finishInfoEntity(mpd_InfoEntity *entity)
{
	if (entity->info.directory) {
		if (entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY) {
			mpd_freeDirectory(entity->info.directory);
		} else if (entity->type == MPD_INFO_ENTITY_TYPE_SONG) {
			mpd_freeSong(entity->info.song);
		} else if (entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE) {
			mpd_freePlaylistFile(entity->info.playlistFile);
		}
	}
}

mpd_InfoEntity *mpd_newInfoEntity(void)
{
	mpd_InfoEntity *entity = (mpd_InfoEntity *) malloc(sizeof(mpd_InfoEntity));

	mpd_initInfoEntity(entity);

	return entity;
}

void mpd_freeInfoEntity(mpd_InfoEntity *entity)
{
	mpd_finishInfoEntity(entity);
	free(entity);
}

static void mpd_sendInfoCommand(mpd_Connection *connection, char *command)
{
	mpd_executeCommand(connection, command);
}

mpd_InfoEntity *mpd_getNextInfoEntity(mpd_Connection *connection)
{
	mpd_InfoEntity *entity = NULL;

	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		return NULL;
	}

	if (!connection->returnElement) {
		mpd_getNextReturnElement(connection);
	}

	if (connection->returnElement) {
		if (strcmp(connection->returnElement->name, "file") == 0) {
			entity = mpd_newInfoEntity();
			entity->type = MPD_INFO_ENTITY_TYPE_SONG;
			entity->info.song = mpd_newSong();
			entity->info.song->file = strndup(connection->returnElement->value, text_buffer_size.get(*state));
		} else if (strcmp(connection->returnElement->name, "directory") == 0) {
			entity = mpd_newInfoEntity();
			entity->type = MPD_INFO_ENTITY_TYPE_DIRECTORY;
			entity->info.directory = mpd_newDirectory();
			entity->info.directory->path =
				strndup(connection->returnElement->value, text_buffer_size.get(*state));
		} else if (strcmp(connection->returnElement->name, "playlist") == 0) {
			entity = mpd_newInfoEntity();
			entity->type = MPD_INFO_ENTITY_TYPE_PLAYLISTFILE;
			entity->info.playlistFile = mpd_newPlaylistFile();
			entity->info.playlistFile->path =
				strndup(connection->returnElement->value, text_buffer_size.get(*state));
		} else if (strcmp(connection->returnElement->name, "cpos") == 0) {
			entity = mpd_newInfoEntity();
			entity->type = MPD_INFO_ENTITY_TYPE_SONG;
			entity->info.song = mpd_newSong();
			entity->info.song->pos = atoi(connection->returnElement->value);
		} else {
			connection->error = 1;
			strcpy(connection->errorStr, "problem parsing song info");
			return NULL;
		}
	} else {
		return NULL;
	}

	mpd_getNextReturnElement(connection);
	while (connection->returnElement) {
		mpd_ReturnElement *re = connection->returnElement;

		if (strcmp(re->name, "file") == 0) {
			return entity;
		} else if (strcmp(re->name, "directory") == 0) {
			return entity;
		} else if (strcmp(re->name, "playlist") == 0) {
			return entity;
		} else if (strcmp(re->name, "cpos") == 0) {
			return entity;
		}

		if (entity->type == MPD_INFO_ENTITY_TYPE_SONG && strlen(re->value)) {
			if (!entity->info.song->artist
					&& strcmp(re->name, "Artist") == 0) {
				entity->info.song->artist = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->album
					&& strcmp(re->name, "Album") == 0) {
				entity->info.song->album = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->title
					&& strcmp(re->name, "Title") == 0) {
				entity->info.song->title = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->track
					&& strcmp(re->name, "Track") == 0) {
				entity->info.song->track = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->name
					&& strcmp(re->name, "Name") == 0) {
				entity->info.song->name = strndup(re->value, text_buffer_size.get(*state));
			} else if (entity->info.song->time == MPD_SONG_NO_TIME
					&& strcmp(re->name, "Time") == 0) {
				entity->info.song->time = atoi(re->value);
			} else if (entity->info.song->pos == MPD_SONG_NO_NUM
					&& strcmp(re->name, "Pos") == 0) {
				entity->info.song->pos = atoi(re->value);
			} else if (entity->info.song->id == MPD_SONG_NO_ID
					&& strcmp(re->name, "Id") == 0) {
				entity->info.song->id = atoi(re->value);
			} else if (!entity->info.song->date
					&& strcmp(re->name, "Date") == 0) {
				entity->info.song->date = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->genre
					&& strcmp(re->name, "Genre") == 0) {
				entity->info.song->genre = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->composer
					&& strcmp(re->name, "Composer") == 0) {
				entity->info.song->composer = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->performer
					&& strcmp(re->name, "Performer") == 0) {
				entity->info.song->performer = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->disc
					&& strcmp(re->name, "Disc") == 0) {
				entity->info.song->disc = strndup(re->value, text_buffer_size.get(*state));
			} else if (!entity->info.song->comment
					&& strcmp(re->name, "Comment") == 0) {
				entity->info.song->comment = strndup(re->value, text_buffer_size.get(*state));
			}
		} else if (entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY) {
		} else if (entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE) {
		}

		mpd_getNextReturnElement(connection);
	}

	return entity;
}

static char *mpd_getNextReturnElementNamed(mpd_Connection *connection,
		const char *name)
{
	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		return NULL;
	}

	mpd_getNextReturnElement(connection);
	while (connection->returnElement) {
		mpd_ReturnElement *re = connection->returnElement;

		if (strcmp(re->name, name) == 0) {
			return strndup(re->value, text_buffer_size.get(*state));
		}
		mpd_getNextReturnElement(connection);
	}

	return NULL;
}

char *mpd_getNextTag(mpd_Connection *connection, int type)
{
	if (type < 0 || type >= MPD_TAG_NUM_OF_ITEM_TYPES
			|| type == MPD_TAG_ITEM_ANY) {
		return NULL;
	}
	if (type == MPD_TAG_ITEM_FILENAME) {
		return mpd_getNextReturnElementNamed(connection, "file");
	}
	return mpd_getNextReturnElementNamed(connection, mpdTagItemKeys[type]);
}

char *mpd_getNextArtist(mpd_Connection *connection)
{
	return mpd_getNextReturnElementNamed(connection, "Artist");
}

char *mpd_getNextAlbum(mpd_Connection *connection)
{
	return mpd_getNextReturnElementNamed(connection, "Album");
}

void mpd_sendPlaylistInfoCommand(mpd_Connection *connection, int songPos)
{
	int len = strlen("playlistinfo") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playlistinfo \"%i\"\n", songPos);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendPlaylistIdCommand(mpd_Connection *connection, int id)
{
	int len = strlen("playlistid") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playlistid \"%i\"\n", id);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendPlChangesCommand(mpd_Connection *connection, long long playlist)
{
	int len = strlen("plchanges") + 2 + LONGLONGLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "plchanges \"%lld\"\n", playlist);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendPlChangesPosIdCommand(mpd_Connection *connection,
		long long playlist)
{
	int len = strlen("plchangesposid") + 2 + LONGLONGLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "plchangesposid \"%lld\"\n", playlist);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendListallCommand(mpd_Connection *connection, const char *dir)
{
	char *sDir = mpd_sanitizeArg(dir);
	int len = strlen("listall") + 2 + strlen(sDir) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "listall \"%s\"\n", sDir);
	mpd_sendInfoCommand(connection, string);
	free(string);
	free(sDir);
}

void mpd_sendListallInfoCommand(mpd_Connection *connection, const char *dir)
{
	char *sDir = mpd_sanitizeArg(dir);
	int len = strlen("listallinfo") + 2 + strlen(sDir) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "listallinfo \"%s\"\n", sDir);
	mpd_sendInfoCommand(connection, string);
	free(string);
	free(sDir);
}

void mpd_sendLsInfoCommand(mpd_Connection *connection, const char *dir)
{
	char *sDir = mpd_sanitizeArg(dir);
	int len = strlen("lsinfo") + 2 + strlen(sDir) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "lsinfo \"%s\"\n", sDir);
	mpd_sendInfoCommand(connection, string);
	free(string);
	free(sDir);
}

void mpd_sendCurrentSongCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "currentsong\n");
}

void mpd_sendSearchCommand(mpd_Connection *connection, int table,
		const char *str)
{
	mpd_startSearch(connection, 0);
	mpd_addConstraintSearch(connection, table, str);
	mpd_commitSearch(connection);
}

void mpd_sendFindCommand(mpd_Connection *connection, int table,
		const char *str)
{
	mpd_startSearch(connection, 1);
	mpd_addConstraintSearch(connection, table, str);
	mpd_commitSearch(connection);
}

void mpd_sendListCommand(mpd_Connection *connection, int table,
		const char *arg1)
{
	char st[10];
	int len;
	char *string;

	if (table == MPD_TABLE_ARTIST) {
		strcpy(st, "artist");
	} else if (table == MPD_TABLE_ALBUM) {
		strcpy(st, "album");
	} else {
		connection->error = 1;
		strcpy(connection->errorStr, "unknown table for list");
		return;
	}
	if (arg1) {
		char *sanitArg1 = mpd_sanitizeArg(arg1);

		len = strlen("list") + 1 + strlen(sanitArg1) + 2 + strlen(st) + 3;
		string = (char*) malloc(len);
		snprintf(string, len, "list %s \"%s\"\n", st, sanitArg1);
		free(sanitArg1);
	} else {
		len = strlen("list") + 1 + strlen(st) + 2;
		string = (char*) malloc(len);
		snprintf(string, len, "list %s\n", st);
	}
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendAddCommand(mpd_Connection *connection, const char *file)
{
	char *sFile = mpd_sanitizeArg(file);
	int len = strlen("add") + 2 + strlen(sFile) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "add \"%s\"\n", sFile);
	mpd_executeCommand(connection, string);
	free(string);
	free(sFile);
}

int mpd_sendAddIdCommand(mpd_Connection *connection, const char *file)
{
	int retval = -1;
	char *sFile = mpd_sanitizeArg(file);
	int len = strlen("addid") + 2 + strlen(sFile) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "addid \"%s\"\n", sFile);
	mpd_sendInfoCommand(connection, string);
	free(string);
	free(sFile);

	string = mpd_getNextReturnElementNamed(connection, "Id");
	if (string) {
		retval = atoi(string);
		free(string);
	}

	return retval;
}

void mpd_sendDeleteCommand(mpd_Connection *connection, int songPos)
{
	int len = strlen("delete") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "delete \"%i\"\n", songPos);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendDeleteIdCommand(mpd_Connection *connection, int id)
{
	int len = strlen("deleteid") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "deleteid \"%i\"\n", id);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendSaveCommand(mpd_Connection *connection, const char *name)
{
	char *sName = mpd_sanitizeArg(name);
	int len = strlen("save") + 2 + strlen(sName) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "save \"%s\"\n", sName);
	mpd_executeCommand(connection, string);
	free(string);
	free(sName);
}

void mpd_sendLoadCommand(mpd_Connection *connection, const char *name)
{
	char *sName = mpd_sanitizeArg(name);
	int len = strlen("load") + 2 + strlen(sName) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "load \"%s\"\n", sName);
	mpd_executeCommand(connection, string);
	free(string);
	free(sName);
}

void mpd_sendRmCommand(mpd_Connection *connection, const char *name)
{
	char *sName = mpd_sanitizeArg(name);
	int len = strlen("rm") + 2 + strlen(sName) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "rm \"%s\"\n", sName);
	mpd_executeCommand(connection, string);
	free(string);
	free(sName);
}

void mpd_sendRenameCommand(mpd_Connection *connection, const char *from,
		const char *to)
{
	char *sFrom = mpd_sanitizeArg(from);
	char *sTo = mpd_sanitizeArg(to);
	int len = strlen("rename") + 2 + strlen(sFrom) + 3 + strlen(sTo) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "rename \"%s\" \"%s\"\n", sFrom, sTo);
	mpd_executeCommand(connection, string);
	free(string);
	free(sFrom);
	free(sTo);
}

void mpd_sendShuffleCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "shuffle\n");
}

void mpd_sendClearCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "clear\n");
}

void mpd_sendPlayCommand(mpd_Connection *connection, int songPos)
{
	int len = strlen("play") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "play \"%i\"\n", songPos);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendPlayIdCommand(mpd_Connection *connection, int id)
{
	int len = strlen("playid") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playid \"%i\"\n", id);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendStopCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "stop\n");
}

void mpd_sendPauseCommand(mpd_Connection *connection, int pauseMode)
{
	int len = strlen("pause") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "pause \"%i\"\n", pauseMode);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendNextCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "next\n");
}

void mpd_sendMoveCommand(mpd_Connection *connection, int from, int to)
{
	int len = strlen("move") + 2 + INTLEN + 3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "move \"%i\" \"%i\"\n", from, to);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendMoveIdCommand(mpd_Connection *connection, int id, int to)
{
	int len = strlen("moveid") + 2 + INTLEN + 3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "moveid \"%i\" \"%i\"\n", id, to);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendSwapCommand(mpd_Connection *connection, int song1, int song2)
{
	int len = strlen("swap") + 2 + INTLEN + 3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "swap \"%i\" \"%i\"\n", song1, song2);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendSwapIdCommand(mpd_Connection *connection, int id1, int id2)
{
	int len = strlen("swapid") + 2 + INTLEN + 3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "swapid \"%i\" \"%i\"\n", id1, id2);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendSeekCommand(mpd_Connection *connection, int song, int seek_time)
{
	int len = strlen("seek") + 2 + INTLEN + 3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "seek \"%i\" \"%i\"\n", song, seek_time);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendSeekIdCommand(mpd_Connection *connection, int id, int seek_time)
{
	int len = strlen("seekid") + 2 + INTLEN + 3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "seekid \"%i\" \"%i\"\n", id, seek_time);
	mpd_sendInfoCommand(connection, string);
	free(string);
}

void mpd_sendUpdateCommand(mpd_Connection *connection, char *path)
{
	char *sPath = mpd_sanitizeArg(path);
	int len = strlen("update") + 2 + strlen(sPath) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "update \"%s\"\n", sPath);
	mpd_sendInfoCommand(connection, string);
	free(string);
	free(sPath);
}

int mpd_getUpdateId(mpd_Connection *connection)
{
	char *jobid;
	int ret = 0;

	jobid = mpd_getNextReturnElementNamed(connection, "updating_db");
	if (jobid) {
		ret = atoi(jobid);
		free(jobid);
	}

	return ret;
}

void mpd_sendPrevCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "previous\n");
}

void mpd_sendRepeatCommand(mpd_Connection *connection, int repeatMode)
{
	int len = strlen("repeat") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "repeat \"%i\"\n", repeatMode);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendRandomCommand(mpd_Connection *connection, int randomMode)
{
	int len = strlen("random") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "random \"%i\"\n", randomMode);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendSetvolCommand(mpd_Connection *connection, int volumeChange)
{
	int len = strlen("setvol") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "setvol \"%i\"\n", volumeChange);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendVolumeCommand(mpd_Connection *connection, int volumeChange)
{
	int len = strlen("volume") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "volume \"%i\"\n", volumeChange);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendCrossfadeCommand(mpd_Connection *connection, int seconds)
{
	int len = strlen("crossfade") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "crossfade \"%i\"\n", seconds);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendPasswordCommand(mpd_Connection *connection, const char *pass)
{
	char *sPass = mpd_sanitizeArg(pass);
	int len = strlen("password") + 2 + strlen(sPass) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "password \"%s\"\n", sPass);
	mpd_executeCommand(connection, string);
	free(string);
	free(sPass);
}

void mpd_sendCommandListBegin(mpd_Connection *connection)
{
	if (connection->commandList) {
		strcpy(connection->errorStr, "already in command list mode");
		connection->error = 1;
		return;
	}
	connection->commandList = COMMAND_LIST;
	mpd_executeCommand(connection, "command_list_begin\n");
}

void mpd_sendCommandListOkBegin(mpd_Connection *connection)
{
	if (connection->commandList) {
		strcpy(connection->errorStr, "already in command list mode");
		connection->error = 1;
		return;
	}
	connection->commandList = COMMAND_LIST_OK;
	mpd_executeCommand(connection, "command_list_ok_begin\n");
	connection->listOks = 0;
}

void mpd_sendCommandListEnd(mpd_Connection *connection)
{
	if (!connection->commandList) {
		strcpy(connection->errorStr, "not in command list mode");
		connection->error = 1;
		return;
	}
	connection->commandList = 0;
	mpd_executeCommand(connection, "command_list_end\n");
}

void mpd_sendOutputsCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "outputs\n");
}

mpd_OutputEntity *mpd_getNextOutput(mpd_Connection *connection)
{
	mpd_OutputEntity *output = NULL;

	if (connection->doneProcessing
			|| (connection->listOks && connection->doneListOk)) {
		return NULL;
	}

	if (connection->error) {
		return NULL;
	}

	output = (mpd_OutputEntity*) malloc(sizeof(mpd_OutputEntity));
	output->id = -10;
	output->name = NULL;
	output->enabled = 0;

	if (!connection->returnElement) {
		mpd_getNextReturnElement(connection);
	}

	while (connection->returnElement) {
		mpd_ReturnElement *re = connection->returnElement;

		if (strcmp(re->name, "outputid") == 0) {
			if (output != NULL && output->id >= 0) {
				return output;
			}
			output->id = atoi(re->value);
		} else if (strcmp(re->name, "outputname") == 0) {
			output->name = strndup(re->value, text_buffer_size.get(*state));
		} else if (strcmp(re->name, "outputenabled") == 0) {
			output->enabled = atoi(re->value);
		}

		mpd_getNextReturnElement(connection);
		if (connection->error) {
			free(output);
			return NULL;
		}
	}

	return output;
}

void mpd_sendEnableOutputCommand(mpd_Connection *connection, int outputId)
{
	int len = strlen("enableoutput") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "enableoutput \"%i\"\n", outputId);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_sendDisableOutputCommand(mpd_Connection *connection, int outputId)
{
	int len = strlen("disableoutput") + 2 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "disableoutput \"%i\"\n", outputId);
	mpd_executeCommand(connection, string);
	free(string);
}

void mpd_freeOutputElement(mpd_OutputEntity *output)
{
	free(output->name);
	free(output);
}

/** odd naming, but it gets the not allowed commands */
void mpd_sendNotCommandsCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "notcommands\n");
}

/** odd naming, but it gets the allowed commands */
void mpd_sendCommandsCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "commands\n");
}

/** Get the next returned command */
char *mpd_getNextCommand(mpd_Connection *connection)
{
	return mpd_getNextReturnElementNamed(connection, "command");
}

void mpd_sendUrlHandlersCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "urlhandlers\n");
}

char *mpd_getNextHandler(mpd_Connection *connection)
{
	return mpd_getNextReturnElementNamed(connection, "handler");
}

void mpd_sendTagTypesCommand(mpd_Connection *connection)
{
	mpd_executeCommand(connection, "tagtypes\n");
}

char *mpd_getNextTagType(mpd_Connection *connection)
{
	return mpd_getNextReturnElementNamed(connection, "tagtype");
}

void mpd_startSearch(mpd_Connection *connection, int exact)
{
	if (connection->request) {
		strcpy(connection->errorStr, "search already in progress");
		connection->error = 1;
		return;
	}

	if (exact) {
		connection->request = strndup("find", text_buffer_size.get(*state));
	} else {
		connection->request = strndup("search", text_buffer_size.get(*state));
	}
}

void mpd_startStatsSearch(mpd_Connection *connection)
{
	if (connection->request) {
		strcpy(connection->errorStr, "search already in progress");
		connection->error = 1;
		return;
	}

	connection->request = strndup("count", text_buffer_size.get(*state));
}

void mpd_startPlaylistSearch(mpd_Connection *connection, int exact)
{
	if (connection->request) {
		strcpy(connection->errorStr, "search already in progress");
		connection->error = 1;
		return;
	}

	if (exact) {
		connection->request = strndup("playlistfind", text_buffer_size.get(*state));
	} else {
		connection->request = strndup("playlistsearch", text_buffer_size.get(*state));
	}
}

void mpd_startFieldSearch(mpd_Connection *connection, int type)
{
	const char *strtype;
	int len;

	if (connection->request) {
		strcpy(connection->errorStr, "search already in progress");
		connection->error = 1;
		return;
	}

	if (type < 0 || type >= MPD_TAG_NUM_OF_ITEM_TYPES) {
		strcpy(connection->errorStr, "invalid type specified");
		connection->error = 1;
		return;
	}

	strtype = mpdTagItemKeys[type];

	len = 5 + strlen(strtype) + 1;
	connection->request = (char*) malloc(len);

	snprintf(connection->request, len, "list %c%s", tolower(strtype[0]),
		strtype + 1);
}

void mpd_addConstraintSearch(mpd_Connection *connection, int type,
		const char *name)
{
	const char *strtype;
	char *arg;
	int len;
	char *string;

	if (!connection->request) {
		strcpy(connection->errorStr, "no search in progress");
		connection->error = 1;
		return;
	}

	if (type < 0 || type >= MPD_TAG_NUM_OF_ITEM_TYPES) {
		strcpy(connection->errorStr, "invalid type specified");
		connection->error = 1;
		return;
	}

	if (name == NULL) {
		strcpy(connection->errorStr, "no name specified");
		connection->error = 1;
		return;
	}

	string = strndup(connection->request, text_buffer_size.get(*state));
	strtype = mpdTagItemKeys[type];
	arg = mpd_sanitizeArg(name);

	len = strlen(string) + 1 + strlen(strtype) + 2 + strlen(arg) + 2;
	connection->request = (char*) realloc(connection->request, len);
	snprintf(connection->request, len, "%s %c%s \"%s\"", string,
		tolower(strtype[0]), strtype + 1, arg);

	free(string);
	free(arg);
}

void mpd_commitSearch(mpd_Connection *connection)
{
	int len;

	if (!connection->request) {
		strcpy(connection->errorStr, "no search in progress");
		connection->error = 1;
		return;
	}

	len = strlen(connection->request) + 2;
	connection->request = (char*) realloc(connection->request, len);
	connection->request[len - 2] = '\n';
	connection->request[len - 1] = '\0';
	mpd_sendInfoCommand(connection, connection->request);

	free_and_zero(connection->request);
}

/**
 * @param connection	a MpdConnection
 * @param path			the path to the playlist.
 *
 * List the content, with full metadata, of a stored playlist. */
void mpd_sendListPlaylistInfoCommand(mpd_Connection *connection, char *path)
{
	char *arg = mpd_sanitizeArg(path);
	int len = strlen("listplaylistinfo") + 2 + strlen(arg) + 3;
	char *query = (char*) malloc(len);

	snprintf(query, len, "listplaylistinfo \"%s\"\n", arg);
	mpd_sendInfoCommand(connection, query);
	free(arg);
	free(query);
}

/**
 * @param connection	a MpdConnection
 * @param path			the path to the playlist.
 *
 * List the content of a stored playlist. */
void mpd_sendListPlaylistCommand(mpd_Connection *connection, char *path)
{
	char *arg = mpd_sanitizeArg(path);
	int len = strlen("listplaylist") + 2 + strlen(arg) + 3;
	char *query = (char*) malloc(len);

	snprintf(query, len, "listplaylist \"%s\"\n", arg);
	mpd_sendInfoCommand(connection, query);
	free(arg);
	free(query);
}

void mpd_sendPlaylistClearCommand(mpd_Connection *connection, char *path)
{
	char *sPath = mpd_sanitizeArg(path);
	int len = strlen("playlistclear") + 2 + strlen(sPath) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playlistclear \"%s\"\n", sPath);
	mpd_executeCommand(connection, string);
	free(sPath);
	free(string);
}

void mpd_sendPlaylistAddCommand(mpd_Connection *connection, char *playlist,
		char *path)
{
	char *sPlaylist = mpd_sanitizeArg(playlist);
	char *sPath = mpd_sanitizeArg(path);
	int len = strlen("playlistadd") + 2 + strlen(sPlaylist) + 3 +
		strlen(sPath) + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playlistadd \"%s\" \"%s\"\n", sPlaylist, sPath);
	mpd_executeCommand(connection, string);
	free(sPlaylist);
	free(sPath);
	free(string);
}

void mpd_sendPlaylistMoveCommand(mpd_Connection *connection, char *playlist,
		int from, int to)
{
	char *sPlaylist = mpd_sanitizeArg(playlist);
	int len = strlen("playlistmove") + 2 + strlen(sPlaylist) + 3 + INTLEN +
		3 + INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playlistmove \"%s\" \"%i\" \"%i\"\n", sPlaylist,
		from, to);
	mpd_executeCommand(connection, string);
	free(sPlaylist);
	free(string);
}

void mpd_sendPlaylistDeleteCommand(mpd_Connection *connection, char *playlist,
		int pos)
{
	char *sPlaylist = mpd_sanitizeArg(playlist);
	int len = strlen("playlistdelete") + 2 + strlen(sPlaylist) + 3 +
		INTLEN + 3;
	char *string = (char*) malloc(len);

	snprintf(string, len, "playlistdelete \"%s\" \"%i\"\n", sPlaylist, pos);
	mpd_executeCommand(connection, string);
	free(sPlaylist);
	free(string);
}