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//clients.c:
/*
* Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2013
*
* This file is part of RoarD,
* a sound server daemon for using the RoarAudio protocol.
* See README for details.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3
* or (at your option) any later version as published by
* the Free Software Foundation.
*
* RoarAudio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "muroard.h"
#ifdef MUROARD_FEATURE_CMD_GETTIMEOFDAY
#include <time.h>
#endif
#define _FILTER_ANY 0
int muroard_client_init(void) {
memset(muroard_state_member(client), 0, sizeof(muroard_state_member(client))); // state unused = 0!
#ifdef MUROARD_FEATURE_INTERNAL_CLIENT
muroard_state_member(client)[0].state = CLIENT_STATE_INTERNAL;
muroard_state_member(client)[0].sock = MUROARD_HANDLE_INVALID;
muroard_state_member(client)[0].stream = -1;
#endif
return 0;
}
int muroard_client_free(void) {
int i;
int ret = 0;
for (i = 0; i < MUROARD_MAX_CLIENTS; i++) {
if ( muroard_state_member(client)[i].state != CLIENT_STATE_UNUSED ) {
if ( muroard_client_delete(i) == -1 )
ret = -1;
}
}
return ret;
}
int muroard_client_new(muroard_handle_t sock) {
int i;
if ( muroard_network_nonblock(sock, 0) == -1 )
return -1;
for (i = 0; i < MUROARD_MAX_CLIENTS; i++) {
if ( muroard_state_member(client)[i].state == CLIENT_STATE_UNUSED ) {
muroard_state_member(client)[i].state = CLIENT_STATE_NEW;
muroard_state_member(client)[i].sock = sock;
muroard_state_member(client)[i].stream = -1;
return i;
}
}
return -1;
}
int muroard_client_delete(int id) {
int ret = 0;
if ( id >= MUROARD_MAX_CLIENTS || id < 0 )
return -1;
#ifdef MUROARD_FEATURE_INTERNAL_CLIENT
if ( muroard_state_member(client)[id].state == CLIENT_STATE_INTERNAL )
return 0;
#endif
if ( muroard_state_member(client)[id].state == CLIENT_STATE_UNUSED ||
muroard_state_member(client)[id].state == CLIENT_STATE_CLOSING )
return 0;
muroard_state_member(client)[id].state = CLIENT_STATE_CLOSING;
if ( muroard_state_member(client)[id].stream != -1 ) {
if ( muroard_stream_delete(muroard_state_member(client)[id].stream) == -1 )
ret = -1;
}
if ( muroard_state_member(client)[id].sock != MUROARD_HANDLE_INVALID ) {
muroard_network_close(muroard_state_member(client)[id].sock);
}
muroard_state_member(client)[id].state = CLIENT_STATE_UNUSED;
return ret;
}
muroard_handle_t muroard_client_exec(int id) {
muroard_handle_t sock = muroard_state_member(client)[id].sock;
muroard_state_member(client)[id].sock = MUROARD_HANDLE_INVALID;
muroard_state_member(client)[id].state = CLIENT_STATE_EXECED;
return sock;
}
int muroard_client_handle(int id) {
struct muroard_message m;
muroard_handle_t sock = muroard_state_member(client)[id].sock;
int ret = 0;
#ifdef MUROARD_FEATURE_VOLUME_CONTROL
uint16_t volume;
size_t channels;
uint16_t tmp;
#endif
if ( muroard_proto_recv(sock, &m) == -1 ) {
muroard_client_delete(id);
return -1;
}
if ( m.stream > MUROARD_MAX_STREAMS && m.stream != (uint16_t)-1 ) {
ret = -1;
} else {
switch (m.cmd) {
case MUROAR_CMD_NOOP:
case MUROAR_CMD_IDENTIFY:
case MUROAR_CMD_AUTH:
#ifdef MUROARD_FEATURE_NOOP_SIUCMDS
case MUROAR_CMD_SET_META:
#endif
// no need to do anything
m.datalen = 0;
break;
case MUROAR_CMD_QUIT:
m.cmd = MUROAR_CMD_OK;
m.datalen = 0;
muroard_proto_send(sock, &m);
muroard_client_delete(id);
return 0;
break;
case MUROAR_CMD_EXEC_STREAM:
m.datalen = 0;
if ( m.stream != (uint16_t)-1 && m.stream == muroard_state_member(client)[id].stream ) {
if ( muroard_stream_exec(m.stream) == -1 )
ret = -1;
} else {
ret = -1;
}
break;
#ifdef MUROARD_FEATURE_CMD_WHOAMI
case MUROAR_CMD_WHOAMI:
m.datalen = 1;
m.data[0] = id;
break;
#endif
#ifdef MUROARD_FEATURE_CMD_EXIT
case MUROAR_CMD_EXIT:
// we simply set muroard_state_member(alive) to zero so we will die with the next cycle.
if ( m.datalen == 0 ) { // default: exit
muroard_state_member(alive) = 0;
} else if ( m.datalen == 1 && m.data[0] == 0 ) { // explicit: exit
muroard_state_member(alive) = 0;
#ifndef MUROARD_FEATURE_TERMINATE
} else if ( m.datalen == 1 && m.data[0] == 1 ) { // explicit: terminate
ret = muroard_network_prefree();
#endif
} else { // terminate or unsupported command version
ret = -1;
}
m.datalen = 0;
break;
#endif
#ifdef MUROARD_FEATURE_STANDBY
case MUROAR_CMD_SET_STANDBY:
if ( m.datalen != 2 ) {
ret = -1;
} else {
if ( m.data[0] != 0 ) {
ret = -1;
} else {
switch (m.data[1]) {
case 0: muroard_waveform_standby(0, -1); break;
case 1: muroard_waveform_standby(1, -1); break;
default: ret = -1;
}
}
}
break;
#endif
#ifdef MUROARD_FEATURE_CMD_GET_STANDBY
case MUROAR_CMD_GET_STANDBY:
m.datalen = 2;
m.data[0] = 0;
#ifdef MUROARD_FEATURE_STANDBY
m.data[1] = muroard_waveform_standby(-1, -1);
#else
m.data[1] = 0;
#endif
break;
#endif
#ifdef MUROARD_FEATURE_CMD_GET_VOL
case MUROAR_CMD_GET_VOL:
// we support only the most up to date version of the command:
if ( m.datalen < 2 || m.data[0] != 0 || m.data[1] != 1 || m.stream == (uint16_t)-1 ) {
ret = -1;
} else {
m.datalen = 6*2;
// version: 1
m.data[ 0] = 0;
m.data[ 1] = 1;
// channels: 1
m.data[ 2] = 0;
m.data[ 3] = 1;
// scale:
m.data[ 4] = 0xFF;
m.data[ 5] = 0xFF;
// rpg mul:
m.data[ 6] = 0;
m.data[ 7] = 1;
// rpg div:
m.data[ 8] = 0;
m.data[ 9] = 1;
// our only channel:
#ifdef MUROARD_FEATURE_VOLUME_CONTROL
volume = muroard_stream_get_volume(m.stream);
m.data[10] = (volume & 0xFF00) >> 8;
m.data[11] = volume & 0x00FF;
#else
m.data[10] = 0xFF;
m.data[11] = 0xFF;
#endif
}
break;
#endif
#ifdef MUROARD_FEATURE_VOLUME_CONTROL
case MUROAR_CMD_SET_VOL:
if ( m.datalen < (4*2) || m.data[0] != 0 || m.data[1] != 1 || !muroard_stream_exist(m.stream) ) {
ret = -1;
} else {
channels = (m.datalen - 3*2)/2;
volume = 0;
tmp = ntohs(((uint16_t*)m.data)[2]);
ret = 0;
switch (tmp) {
case 1: // ROAR_SET_VOL_ALL
case 4: // ROAR_SET_VOL_UNMAPPED
switch (channels) {
case 1: // mono
volume = ntohs(((uint16_t*)m.data)[3]);
break;
case 2: // stereo
volume = ((uint_least32_t)ntohs(((uint16_t*)m.data)[3]) + (uint_least32_t)ntohs(((uint16_t*)m.data)[4]))/2;
// printf("l=%u, r=%u, avg=%u\n", (unsigned)ntohs(((uint16_t*)m.data)[3]), (unsigned)ntohs(((uint16_t*)m.data)[4]), (unsigned)volume);
break;
default:
ret = -1;
break;
}
break;
case 3: // ROAR_SET_VOL_MS
if ( channels == 1 ) {
volume = ntohs(((uint16_t*)m.data)[3]);
} else {
ret = -1;
}
break;
default:
ret = -1;
break;
}
// printf("ret=%i, volume=%u\n", ret, (unsigned)volume);
tmp = ntohs(((uint16_t*)m.data)[1]);
volume = (float)volume*65535.f/(float)tmp;
// printf("tmp=%u, volume=%u\n", (unsigned)tmp, (unsigned)volume);
muroard_state_member(stream)[m.stream].volume = volume;
}
break;
#endif
#ifdef MUROARD_FEATURE_CMD_KICK
case MUROAR_CMD_KICK:
if ( m.datalen != 4 ) {
ret = -1;
} else {
if ( m.data[0] != 0 ) { // type >= 256
ret = -1;
} else {
if ( m.data[2] != 0 ) { // id >= 256
ret = -1;
} else if ( m.data[1] == 1 ) { // CLIENT
ret = muroard_client_delete(m.data[3]);
} else if ( m.data[1] == 2 ) { // STREAM
ret = muroard_stream_delete(m.data[3]);
} else { // unknown type
ret = -1;
}
}
}
break;
#endif
#ifdef MUROARD_FEATURE_CMD_ATTACH
case MUROAR_CMD_ATTACH:
ret = muroard_client_handle_attach(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_SERVER_OINFO
case MUROAR_CMD_SERVER_OINFO:
ret = muroard_client_handle_server_oinfo(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_PASSFH
case MUROAR_CMD_PASSFH:
ret = muroard_client_handle_passfh(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_LIST_CLIENTS
case MUROAR_CMD_LIST_CLIENTS:
ret = muroard_client_handle_list_clients(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_LIST_STREAMS
case MUROAR_CMD_LIST_STREAMS:
ret = muroard_client_handle_list_streams(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_GET_CLIENT
case MUROAR_CMD_GET_CLIENT:
ret = muroard_client_handle_get_client(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_GET_STREAM
case MUROAR_CMD_GET_STREAM:
ret = muroard_client_handle_get_stream(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_CAPS
case MUROAR_CMD_CAPS:
ret = muroard_client_handle_caps(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_SERVER_INFO
case MUROAR_CMD_SERVER_INFO:
ret = muroard_client_handle_server_info(id, &m);
break;
#endif
#ifdef MUROARD_FEATURE_CMD_GETTIMEOFDAY
case MUROAR_CMD_GETTIMEOFDAY:
ret = muroard_client_handle_gettimeofday(id, &m);
break;
#endif
case MUROAR_CMD_NEW_STREAM:
ret = muroard_client_handle_new_stream(id, &m);
break;
default:
ret = -1; // we do not know this command
}
}
if ( ret == 0 ) {
m.cmd = MUROAR_CMD_OK;
} else {
m.cmd = MUROAR_CMD_ERROR;
m.stream = -1;
m.pos = 0;
m.datalen = 0;
}
if ( muroard_proto_send(sock, &m) == -1 ) {
muroard_client_delete(id);
return -1;
}
return 0;
}
int muroard_client_handle_new_stream(int id, struct muroard_message * mes) {
struct muroard_audio_info info;
uint32_t * data = (uint32_t*)mes->data;
int ret;
int i;
if ( mes->datalen != (6*4) )
return -1;
mes->datalen = 0;
for (i = 0; i < 6; i++) {
data[i] = ntohl(data[i]);
}
if ( data[1] != (uint32_t)-1 )
return -1;
if ( data[2] != (uint32_t)muroard_state_member(sa_rate) )
return -1;
info.bits = data[3];
info.channels = data[4];
info.codec = data[5];
ret = muroard_stream_new(id, data[0], &info);
if ( ret == -1 )
return -1;
mes->stream = ret;
return 0;
}
#ifdef MUROARD_FEATURE_CMD_ATTACH
int muroard_client_handle_attach(int id, struct muroard_message * mes) {
int client;
(void)id; // we do not need tis parameter
if ( mes->datalen != 6 )
return -1;
// we do a quick and dirty check:
// 0) 16 bit version must be zero
// 1) we only support SIMPLE attach, const 16 bit, too.
// 2) upper 8 bit of client must be zero (we do not support > 256 clients!)
if ( mes->data[0] != 0 || mes->data[1] != 0 ||
mes->data[2] != 0 || mes->data[3] != 1 ||
mes->data[4] != 0 )
return -1;
client = mes->data[5];
if ( client < 0 )
return -1;
if ( (client + 1) > MUROARD_MAX_CLIENTS )
return -1;
if ( muroard_state_member(client)[client].state != CLIENT_STATE_NEW &&
#ifdef MUROARD_FEATURE_INTERNAL_CLIENT
muroard_state_member(client)[client].state != CLIENT_STATE_INTERNAL &&
#endif
muroard_state_member(client)[client].state != CLIENT_STATE_OLD )
return -1;
if ( muroard_state_member(client)[client].stream != -1 )
return -1;
if ( muroard_stream_move_client(mes->stream, client) == -1 )
return -1;
#ifdef MUROARD_FEATURE_INTERNAL_CLIENT
if ( muroard_state_member(client)[client].state != CLIENT_STATE_INTERNAL )
#endif
muroard_state_member(client)[client].stream = mes->stream;
mes->datalen = 0;
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_SERVER_OINFO
int muroard_client_handle_server_oinfo(int id, struct muroard_message * mes) {
uint32_t * data = (uint32_t*) mes->data;
int i;
(void)id; // we do not need this parameter
if ( mes->datalen != 0 )
return -1;
mes->datalen = 6*4;
mes->stream = -1;
mes->pos = -1;
data[0] = 6; // TODO: do not use magic number. this is ROAR_DIR_MIXING
data[1] = -1;
data[2] = muroard_state_member(sa_rate);
data[3] = 16;
data[4] = muroard_state_member(sa_channels);
data[5] = MUROAR_CODEC_PCM;
for (i = 0; i < 6; i++) {
data[i] = htonl(data[i]);
}
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_PASSFH
int muroard_client_handle_passfh(int id, struct muroard_message * mes) {
muroard_handle_t fh;
mes->datalen = 0;
fh = muroard_network_recvfh(muroard_state_member(client)[id].sock);
if ( fh == MUROARD_HANDLE_INVALID )
return -1;
if ( muroard_network_nonblock(fh, 0) == -1 ) {
muroard_network_close(fh);
return -1;
}
if ( !muroard_stream_exist(mes->stream) ) {
muroard_network_close(fh);
return -1;
}
if ( muroard_stream_get_sock(mes->stream) != MUROARD_HANDLE_INVALID ) {
muroard_network_close(fh);
return -1;
}
if ( muroard_stream_set_sock(mes->stream, fh) == -1 ) {
muroard_network_close(fh);
return -1;
}
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_LIST_CLIENTS
int muroard_client_handle_list_clients(int id, struct muroard_message * mes) {
int len = 0;
int i;
(void)id; // we do not need tis parameter
if ( mes->datalen != 7 )
return -1;
if ( mes->data[0] != 0 )
return -1;
if ( mes->data[1] != _FILTER_ANY )
return -1;
for (i = 0; i < MUROARD_MAX_CLIENTS; i++) {
if ( muroard_state_member(client)[i].state != CLIENT_STATE_UNUSED ) {
mes->data[len++] = i;
}
}
mes->datalen = len;
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_LIST_STREAMS
int muroard_client_handle_list_streams(int id, struct muroard_message * mes) {
int len = 0;
int i;
(void)id; // we do not need tis parameter
if ( mes->datalen != 7 )
return -1;
if ( mes->data[0] != 0 )
return -1;
if ( mes->data[1] != _FILTER_ANY )
return -1;
for (i = 0; i < MUROARD_MAX_STREAMS; i++) {
if ( muroard_state_member(stream)[i].state != STREAM_STATE_UNUSED ) {
mes->data[len++] = i;
}
}
mes->datalen = len;
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_GET_CLIENT
int muroard_client_handle_get_client(int id, struct muroard_message * mes) {
struct muroard_client * c;
int client;
int len = 0;
(void)id; // we do not need tis parameter
if ( mes->datalen != 1 )
return -1;
client = (unsigned char)mes->data[0];
if ( client >= MUROARD_MAX_CLIENTS )
return -1;
if ( (c = &(muroard_state_member(client)[client]))->state == CLIENT_STATE_UNUSED )
return -1;
mes->data[len++] = 0; // version
if ( c->stream == -1 ) {
mes->data[len++] = -1; // not execed because we do not have a stream
} else {
if ( muroard_state_member(stream)[c->stream].state == STREAM_STATE_EXECED ) {
mes->data[len++] = c->stream;
} else {
mes->data[len++] = -1; // not execed
}
}
if ( c->stream == -1 ) {
mes->data[len++] = 0; // no streams
} else {
mes->data[len++] = 1; // one stream
mes->data[len++] = c->stream;
}
mes->data[len++] = 1; // name has size of one byte
#ifdef MUROARD_FEATURE_GET_CLIENT_DUMMYNAME
snprintf(&(mes->data[len]), sizeof(mes->data) - len, "Client %i", client);
mes->data[len - 1] = strlen(&(mes->data[len])) + 1;
len += mes->data[len - 1] - 1;
#endif
mes->data[len++] = 0; // \0
memset(&(mes->data[len]), 0xFF, 3*4); // PID, UID, GID
len += 3*4;
// Protocol: RoarAudio = 1, 32 bit network byte order
mes->data[len++] = 0;
mes->data[len++] = 0;
mes->data[len++] = 0;
mes->data[len++] = 1;
// Byte order we use: Network byte order = 0x02, 32 bit network byte order
mes->data[len++] = 0;
mes->data[len++] = 0;
mes->data[len++] = 0;
mes->data[len++] = 0x02;
mes->datalen = len;
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_GET_STREAM
int muroard_client_handle_get_stream(int id, struct muroard_message * mes) {
struct muroard_stream * s;
uint32_t * data = (uint32_t*) mes->data;
int i;
(void)id; // we do not need tis parameter
if ( !muroard_stream_exist(mes->stream) ) {
return -1;
}
s = &(muroard_state_member(stream)[mes->stream]);
//fprintf(stderr, "%s:%i: dir=%i\n", __FILE__, __LINE__, s->dir);
mes->datalen = 6*4;
#ifdef MUROARD_FEATURE_POSITION
mes->pos = s->pos;
#else
mes->pos = -1;
#endif
data[0] = s->dir;
data[1] = -1;
data[2] = muroard_state_member(sa_rate);
data[3] = s->info.bits;
data[4] = s->info.channels;
data[5] = s->info.codec;
for (i = 0; i < 6; i++) {
data[i] = htonl(data[i]);
}
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_CAPS
#if BYTE_ORDER == LITTLE_ENDIAN || defined(__WIN32)
#define _HTONS(x) ( \
(((uint32_t)(x) & 0x000000FF) << 24) | \
(((uint32_t)(x) & 0x0000FF00) << 8) | \
(((uint32_t)(x) & 0x00FF0000) >> 8) | \
(((uint32_t)(x) & 0xFF000000) >> 24) \
)
#elif BYTE_ORDER == BIG_ENDIAN
#define _HTONS(x) (x)
#else
#error CAPS support not supported for your byte order
#endif
#define _MKSTD(vendor,standard,version) _HTONS(((((uint32_t)(vendor) & 0x00FF) << 24) | \
(((uint32_t)(standard) & 0xFFFF) << 8) | \
((uint32_t)(version) & 0x00FF) ))
#define _RA 0
#define _TERM 0xFFFFFFFF
#define _TERM_SIZE 4
static const uint32_t _caps_standards[] = {
_MKSTD(_RA, 0, 0), // Version 0 messages
#ifdef MUROARD_FEATURE_SOCKET_INET
_MKSTD(_RA, 25, 0),
#endif
#ifdef MUROARD_FEATURE_SOCKET_UNIX
_MKSTD(_RA, 23, 0),
#endif
_TERM
};
int muroard_client_handle_caps(int id, struct muroard_message * mes) {
uint16_t flags;
(void)id;
// check if header is complet.
if ( mes->datalen < 4 )
return -1;
// check if version is supported.
if ( mes->data[0] != 0 )
return -1;
// check if type is supported.
if ( mes->data[1] != MUROAR_CT_STANDARDS )
return -1;
flags = ntohs(((uint16_t*)mes->data)[1]);
if ( !(flags & MUROAR_CF_REQUEST) ) {
mes->datalen = 0;
return 0;
}
mes->datalen = 4 + (sizeof(_caps_standards) - _TERM_SIZE);
if ( mes->datalen > sizeof(mes->data) )
return -1;
// clear flags:
mes->data[2] = 0;
mes->data[3] = 0;
memcpy(mes->data + 4, _caps_standards, sizeof(_caps_standards) - _TERM_SIZE);
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_SERVER_INFO
int muroard_client_handle_server_info(int id, struct muroard_message * mes) {
const char * version = MUROARD_VERSION;
const size_t len = strlen(version);
(void)id, (void)mes;
// test length:
if ( mes->datalen != 4 )
return -1;
// test version:
if ( mes->data[0] != 0 || mes->data[1] != 0 )
return -1;
// test type (0x0001 = IT_SERVER):
if ( mes->data[2] != 0 || mes->data[3] != 1 )
return -1;
mes->datalen = 8 + len;
// version:
mes->data[0] = 0x00;
// reserved:
mes->data[1] = 0x00;
// indexlen:
mes->data[2] = 0x00;
mes->data[3] = 0x01;
// index 0:
// - reserved
mes->data[4] = 0x00;
// - type (0x00 = ITST_VERSION)
mes->data[5] = 0x00;
// - len
mes->data[6] = (len & 0xFF00) >> 8;
mes->data[7] = (len & 0x00FF);
memcpy(&(mes->data[8]), version, len);
return 0;
}
#endif
#ifdef MUROARD_FEATURE_CMD_GETTIMEOFDAY
int muroard_client_handle_gettimeofday(int id, struct muroard_message * mes) {
uint32_t * data = (uint32_t *)mes->data;
int32_t now = time(NULL);
(void)id;
mes->datalen = 8*4;
data[0] = 0;
data[1] = 0;
data[2] = now < 0 ? 0xFFFFFFFFLU : 0LU;
data[3] = htonl((uint32_t)now);
data[4] = 0;
data[5] = 0;
data[6] = 0;
data[7] = htonl(1000000000UL);
return 0;
}
#endif
//ll
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