/*
* Copyright (C) 2004 Steve Harris
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <float.h>
#include <sys/types.h>
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#define EADDRINUSE WSAEADDRINUSE
#else
#include <netdb.h>
#include <sys/socket.h>
#include <sys/poll.h>
#include <sys/un.h>
#include <arpa/inet.h>
#endif
#ifdef WIN32
#define geterror() WSAGetLastError()
#else
#define geterror() errno
#endif
#include "lo_types_internal.h"
#include "lo/lo.h"
#include "lo/lo_throw.h"
#define LO_HOST_SIZE 1024
typedef struct {
lo_timetag ts;
size_t len;
void *data;
void *next;
} queued_msg_list;
struct lo_cs lo_client_sockets = {-1, -1};
static int lo_can_coerce_spec(const char *a, const char *b);
static int lo_can_coerce(char a, char b);
static void dispatch_method(lo_server s, const char *path, char *types,
void *data);
static int dispatch_queued(lo_server s);
static void queue_data(lo_server s, lo_timetag ts, void *data, size_t len);
#ifdef WIN32
// Copied from the Win32 SDK
// WARNING: The gai_strerror inline functions below use static buffers,
// and hence are not thread-safe. We'll use buffers long enough to hold
// 1k characters. Any system error messages longer than this will be
// returned as empty strings. However 1k should work for the error codes
// used by getaddrinfo().
#define GAI_STRERROR_BUFFER_SIZE 1024
char *WSAAPI gai_strerrorA(int ecode)
{
DWORD dwMsgLen;
static char buff[GAI_STRERROR_BUFFER_SIZE + 1];
dwMsgLen = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM
|FORMAT_MESSAGE_IGNORE_INSERTS
|FORMAT_MESSAGE_MAX_WIDTH_MASK,
NULL,
ecode,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR)buff,
GAI_STRERROR_BUFFER_SIZE,
NULL);
return buff;
}
static int stateWSock = -1;
int initWSock()
{
if(stateWSock >= 0) return stateWSock;
/* TODO - which version of Winsock do we actually need? */
WORD reqversion = MAKEWORD( 2, 2 );
WSADATA wsaData;
if(WSAStartup(reqversion,&wsaData) != 0) {
/* Couldn't initialize Winsock */
stateWSock = 0;
}
else if ( LOBYTE( wsaData.wVersion ) != LOBYTE(reqversion) ||
HIBYTE( wsaData.wVersion ) != HIBYTE(reqversion) ) {
/* wrong version */
WSACleanup();
stateWSock = 0;
}
else
stateWSock = 1;
return stateWSock;
}
#endif
lo_server lo_server_new(const char *port, lo_err_handler err_h)
{
#ifndef WIN32
if (port && *port == '/') {
return lo_server_new_with_proto(port, LO_UNIX, err_h);
}
else
#endif
{
return lo_server_new_with_proto(port, LO_UDP, err_h);
}
}
lo_server lo_server_new_with_proto(const char *port, int proto,
lo_err_handler err_h)
{
lo_server s;
struct addrinfo *ai = NULL, *it, *used;
struct addrinfo hints;
int ret = -1;
int tries = 0;
char pnum[16];
const char *service;
char hostname[LO_HOST_SIZE];
#ifdef WIN32
if(!initWSock()) return NULL;
#endif
s = calloc(1, sizeof(struct _lo_server));
s->err_h = err_h;
s->first = NULL;
s->ai = NULL;
s->hostname = NULL;
s->protocol = proto;
s->port = 0;
s->path = NULL;
s->queued = NULL;
s->socket = -1;
memset(&hints, 0, sizeof(hints));
if (proto == LO_UDP) {
hints.ai_socktype = SOCK_DGRAM;
} else if (proto == LO_TCP) {
hints.ai_socktype = SOCK_STREAM;
}
#ifndef WIN32
else if (proto == LO_UNIX) {
struct sockaddr_un sa;
s->socket = socket(PF_UNIX, SOCK_DGRAM, 0);
if (s->socket == -1) {
int err = geterror();
used = NULL;
lo_throw(s, err, strerror(err), "socket()");
lo_server_free(s);
return NULL;
}
sa.sun_family = AF_UNIX;
strncpy(sa.sun_path, port, 107);
if ((ret = bind(s->socket, (struct sockaddr *)&sa, sizeof(sa))) < 0) {
int err = geterror();
lo_throw(s, err, strerror(err), "bind()");
lo_server_free(s);
return NULL;
}
s->path = strdup(port);
return s;
}
#endif
else {
lo_throw(s, LO_UNKNOWNPROTO, "Unknown protocol", NULL);
lo_server_free(s);
return NULL;
}
#ifdef ENABLE_IPV6
hints.ai_family = PF_UNSPEC;
#else
hints.ai_family = PF_INET;
#endif
hints.ai_flags = AI_PASSIVE;
if (!port) {
service = pnum;
} else {
service = port;
}
do {
if (!port) {
/* not a good way to get random numbers, but its not critical */
snprintf(pnum, 15, "%ld", 10000 + ((unsigned int)rand() +
time(NULL)) % 10000);
}
if (ai) {
freeaddrinfo(ai);
}
if ((ret = getaddrinfo(NULL, service, &hints, &ai))) {
lo_throw(s, ret, gai_strerror(ret), NULL);
freeaddrinfo(ai);
return NULL;
}
used = NULL;
s->ai = ai;
s->socket = -1;
s->port = 0;
for (it = ai; it && s->socket == -1; it = it->ai_next) {
used = it;
s->socket = socket(it->ai_family, hints.ai_socktype, 0);
}
if (s->socket == -1) {
int err = geterror();
used = NULL;
lo_throw(s, err, strerror(err), "socket()");
lo_server_free(s);
return NULL;
}
if ((ret = bind(s->socket, used->ai_addr, used->ai_addrlen)) < 0) {
int err = geterror();
if (err == EINVAL || err == EADDRINUSE) {
used = NULL;
continue;
}
lo_throw(s, err, strerror(err), "bind()");
lo_server_free(s);
return NULL;
}
} while (!used && tries++ < 16);
if (proto == LO_TCP) {
listen(s->socket, 8);
}
if (!used) {
lo_throw(s, LO_NOPORT, "cannot find free port", NULL);
lo_server_free(s);
return NULL;
}
if (proto == LO_UDP) {
lo_client_sockets.udp = s->socket;
} else if (proto == LO_TCP) {
lo_client_sockets.tcp = s->socket;
}
/* Try it the IPV6 friendly way first */
hostname[0] = '\0';
for (it = ai; it; it = it->ai_next) {
if (getnameinfo(it->ai_addr, it->ai_addrlen, hostname,
sizeof(hostname), NULL, 0, NI_NAMEREQD) == 0) {
break;
}
}
/* check to make sure getnameinfo() didn't just set the hostname to "::".
Needed on Darwin. */
if (hostname[0] == ':') {
hostname[0] = '\0';
}
/* Fallback to the oldschool (i.e. more reliable) way */
if (!hostname[0]) {
struct hostent *he;
gethostname(hostname, sizeof(hostname));
he = gethostbyname(hostname);
if (he) {
strncpy(hostname, he->h_name, sizeof(hostname));
}
}
/* soethings gone really wrong, just hope its local only */
if (!hostname[0]) {
strcpy(hostname, "localhost");
}
s->hostname = strdup(hostname);
if (used->ai_family == PF_INET6) {
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)used->ai_addr;
s->port = htons(addr->sin6_port);
} else if (used->ai_family == PF_INET) {
struct sockaddr_in *addr = (struct sockaddr_in *)used->ai_addr;
s->port = htons(addr->sin_port);
} else {
lo_throw(s, LO_UNKNOWNPROTO, "unknown protocol family", NULL);
s->port = atoi(port);
}
return s;
}
void lo_server_free(lo_server s)
{
if (s) {
lo_method it;
lo_method next;
if (s->socket != -1) close(s->socket);
freeaddrinfo(s->ai);
free(s->hostname);
free(s->path);
for (it = s->first; it; it = next) {
next = it->next;
free((char *)it->path);
free((char *)it->typespec);
free(it);
}
free(s);
}
}
void *lo_server_recv_raw(lo_server s, size_t *size)
{
char buffer[LO_MAX_MSG_SIZE];
int ret;
void *data = NULL;
#ifdef WIN32
if(!initWSock()) return NULL;
#endif
s->addr_len = sizeof(s->addr);
ret = recvfrom(s->socket, buffer, LO_MAX_MSG_SIZE, 0,
(struct sockaddr *)&s->addr, &s->addr_len);
if (ret <= 0) {
return NULL;
}
data = malloc(ret);
memcpy(data, buffer, ret);
if (size) *size = ret;
return data;
}
void *lo_server_recv_raw_stream(lo_server s, size_t *size)
{
struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr);
char buffer[LO_MAX_MSG_SIZE];
int32_t read_size;
int ret;
void *data = NULL;
int sock;
#ifdef WIN32
if(!initWSock()) return NULL;
fd_set ps;
FD_ZERO(&ps);
FD_SET(s->socket,&ps);
if(select(1,&ps,NULL,NULL,NULL) == SOCKET_ERROR)
return NULL;
#else
struct pollfd ps;
ps.fd = s->socket;
ps.events = POLLIN | POLLPRI;
ps.revents = 0;
poll(&ps, 1, -1);
#endif
sock = accept(s->socket, (struct sockaddr *)&addr, &addr_len);
ret = recv(sock, &read_size, sizeof(read_size), 0);
read_size = ntohl(read_size);
if (read_size > LO_MAX_MSG_SIZE) {
close(sock);
lo_throw(s, LO_TOOBIG, "Message too large", "recv()");
return NULL;
}
ret = recv(sock, buffer, read_size, 0);
//close(sock);
if (ret <= 0) {
return NULL;
}
data = malloc(ret);
memcpy(data, buffer, ret);
if (size) *size = ret;
return data;
}
int lo_server_recv_noblock(lo_server s, int timeout)
{
int sched_timeout = lo_server_next_event_delay(s) * 1000;
#ifdef WIN32
fd_set ps;
struct timeval stimeout;
#else
struct pollfd ps;
#endif
#ifdef WIN32
int res,to;
if(!initWSock()) return 0;
to = timeout > sched_timeout ? sched_timeout : timeout;
stimeout.tv_sec = to/1000;
stimeout.tv_usec = (to%1000)*1000;
FD_ZERO(&ps);
FD_SET(s->socket,&ps);
res = select(1,&ps,NULL,NULL,&stimeout);
if(res == SOCKET_ERROR)
return 0;
if (res || lo_server_next_event_delay(s) < 0.01)
return lo_server_recv(s);
#else
ps.fd = s->socket;
ps.events = POLLIN | POLLPRI | POLLERR | POLLHUP;
ps.revents = 0;
poll(&ps, 1, timeout > sched_timeout ? sched_timeout : timeout);
if (ps.revents == POLLERR || ps.revents == POLLHUP) {
return 0;
}
if (ps.revents || lo_server_next_event_delay(s) < 0.01) {
return lo_server_recv(s);
}
#endif
return 0;
}
int lo_server_recv(lo_server s)
{
void *data;
size_t size;
char *path;
char *types;
double sched_time = lo_server_next_event_delay(s);
#ifdef WIN32
fd_set ps;
struct timeval stimeout;
int res;
#else
struct pollfd ps;
#endif
again:
if (sched_time > 0.01) {
if (sched_time > 10.0) {
sched_time = 10.0;
}
#ifdef WIN32
if(!initWSock()) return 0;
ps.fd_count = 1;
ps.fd_array[0] = s->socket;
stimeout.tv_sec = sched_time;
stimeout.tv_usec = (sched_time-stimeout.tv_sec)*1.e6;
res = select(1,&ps,NULL,NULL,&stimeout);
if(res == SOCKET_ERROR) {
return 0;
}
if(!res) {
sched_time = lo_server_next_event_delay(s);
if (sched_time > 0.01) {
goto again;
}
return dispatch_queued(s);
}
#else
ps.fd = s->socket;
ps.events = POLLIN | POLLPRI | POLLERR | POLLHUP;
ps.revents = 0;
poll(&ps, 1, (int)(sched_time * 1000.0));
if (ps.revents == POLLERR || ps.revents == POLLHUP) {
return 0;
}
if (!ps.revents) {
sched_time = lo_server_next_event_delay(s);
if (sched_time > 0.01) {
goto again;
}
return dispatch_queued(s);
}
#endif
} else {
return dispatch_queued(s);
}
if (s->protocol == LO_TCP) {
data = lo_server_recv_raw_stream(s, &size);
} else {
data = lo_server_recv_raw(s, &size);
}
if (!data) {
return 0;
}
path = data;
types = data + lo_strsize(path);
if (!strcmp(path, "#bundle")) {
char *pos = types;
uint32_t len;
lo_timetag ts, now;
lo_timetag_now(&now);
ts.sec = lo_otoh32(*((uint32_t *)pos));
pos += 4;
ts.frac = lo_otoh32(*((uint32_t *)pos));
pos += 4;
while (pos - (char *)data < size) {
len = lo_otoh32(*((uint32_t *)pos));
pos += 4;
/* test for immedaite dispatch */
if ((ts.sec == 0 && ts.frac == 1) ||
lo_timetag_diff(ts, now) <= 0.0) {
types = pos + lo_strsize(pos);
dispatch_method(s, pos, types + 1, types + lo_strsize(types));
} else {
queue_data(s, ts, pos, len);
}
pos += len;
}
free(data);
return size;
} else if (*types != ',') {
lo_throw(s, LO_ENOTYPE, "Missing typetag", path);
return -1;
}
dispatch_method(s, path, types+1, data);
free(data);
return size;
}
/* returns the time in seconds until the next scheduled event */
double lo_server_next_event_delay(lo_server s)
{
if (s->queued) {
lo_timetag now;
double delay;
lo_timetag_now(&now);
delay = lo_timetag_diff(((queued_msg_list *)s->queued)->ts, now);
delay = delay > 100.0 ? 100.0 : delay;
delay = delay < 0.0 ? 0.0 : delay;
return delay;
}
return 100.0;
}
static void dispatch_method(lo_server s, const char *path, char *types,
void *data)
{
int argc = strlen(types);
lo_arg **argv = NULL;
lo_method it;
int ret = 1;
int err;
int endian_fixed = 0;
int pattern = strpbrk(path, " #*,?[]{}") != NULL;
lo_message msg = lo_message_new();
lo_address src = lo_address_new(NULL, NULL);
char hostname[LO_HOST_SIZE];
char portname[32];
const char *pptr;
free(msg->types);
msg->types = types;
msg->typelen = strlen(types);
msg->typesize = 0;
msg->data = data;
msg->datalen = 0;
msg->datasize = 0;
msg->source = src;
//inet_ntop(s->addr.ss_family, &s->addr.padding, hostname, sizeof(hostname));
if (s->protocol == LO_UDP) {
err = getnameinfo((struct sockaddr *)&s->addr, sizeof(s->addr),
hostname, sizeof(hostname), portname, sizeof(portname),
NI_NUMERICHOST | NI_NUMERICSERV);
if (err) {
switch (err) {
case EAI_AGAIN:
lo_throw(s, err, "Try again", path);
break;
case EAI_BADFLAGS:
lo_throw(s, err, "Bad flags", path);
break;
case EAI_FAIL:
lo_throw(s, err, "Failed", path);
break;
case EAI_FAMILY:
lo_throw(s, err, "Cannot resolve address family", path);
break;
case EAI_MEMORY:
lo_throw(s, err, "Out of memory", path);
break;
case EAI_NONAME:
lo_throw(s, err, "Cannot resolve", path);
break;
#ifndef WIN32
case EAI_SYSTEM:
lo_throw(s, err, strerror(err), path);
break;
#endif
default:
lo_throw(s, err, "Unknown error", path);
break;
}
return;
}
} else {
hostname[0] = '\0';
portname[0] = '\0';
}
// Store the source information in the lo_address
if (src->host) free(src->host);
if (src->host) free(src->port);
src->host = strdup(hostname);
src->port = strdup(portname);
src->proto = s->protocol;
for (it = s->first; it; it = it->next) {
/* If paths match or handler is wildcard */
if (!it->path || !strcmp(path, it->path) ||
(pattern && lo_pattern_match(it->path, path))) {
/* If types match or handler is wildcard */
if (!it->typespec || !strcmp(types, it->typespec)) {
if (!argv && *types) {
int i;
char *ptr = types - 1 + lo_strsize(types - 1);
argv = calloc(argc + 1, sizeof(lo_arg *));
if (!endian_fixed) {
for (i=0; i<argc; i++) {
argv[i] = (lo_arg *)ptr;
lo_arg_host_endian(types[i], ptr);
ptr += lo_arg_size(types[i], ptr);
}
endian_fixed = 1;
}
}
/* Send wildcard path to generic handler, expanded path
to others.
*/
pptr = path;
if (it->path) pptr = it->path;
ret = it->handler(pptr, types, argv, argc, msg,
it->user_data);
} else if (lo_can_coerce_spec(types, it->typespec)) {
int i;
int opsize = 0;
char *ptr = types - 1 + lo_strsize(types - 1);
char *data_co, *data_co_ptr;
argv = calloc(argc+1, sizeof(lo_arg *));
for (i=0; i<argc; i++) {
opsize += lo_arg_size(it->typespec[i], ptr);
ptr += lo_arg_size(types[i], ptr);
}
data_co = malloc(opsize);
data_co_ptr = data_co;
ptr = types - 1 + lo_strsize(types - 1);
for (i=0; i<argc; i++) {
argv[i] = (lo_arg *)data_co_ptr;
if (!endian_fixed) {
lo_arg_host_endian(types[i], ptr);
}
lo_coerce(it->typespec[i], (lo_arg *)data_co_ptr,
types[i], (lo_arg *)ptr);
data_co_ptr += lo_arg_size(it->typespec[i], data_co_ptr);
ptr += lo_arg_size(types[i], ptr);
}
endian_fixed = 1;
/* Send wildcard path to generic handler, expanded path
to others.
*/
pptr = path;
if (it->path) pptr = it->path;
ret = it->handler(pptr, it->typespec, argv, argc, msg,
it->user_data);
free(argv);
free(data_co);
argv = NULL;
}
if (ret == 0 && !pattern) {
break;
}
}
}
/* If we find no matching methods, check for protocol level stuff */
if (ret == 1 && s->protocol == LO_UDP) {
char *pos = strrchr(path, '/');
/* if its a method enumeration call */
if (pos && *(pos+1) == '\0') {
lo_message reply = lo_message_new();
int len = strlen(path);
lo_strlist *sl = NULL, *slit, *slnew, *slend;
if (!strcmp(types, "i")) {
lo_message_add_int32(reply, argv[0]->i);
}
lo_message_add_string(reply, path);
for (it = s->first; it; it = it->next) {
/* If paths match */
if (it->path && !strncmp(path, it->path, len)) {
char *tmp;
char *sec;
tmp = malloc(strlen(it->path + len) + 1);
strcpy(tmp, it->path + len);
#ifdef WIN32
sec = strchr(tmp,'/');
#else
sec = index(tmp, '/');
#endif
if (sec) *sec = '\0';
slend = sl;
for (slit = sl; slit; slend = slit, slit = slit->next) {
if (!strcmp(slit->str, tmp)) {
free(tmp);
tmp = NULL;
break;
}
}
if (tmp) {
slnew = calloc(1, sizeof(lo_strlist));
slnew->str = tmp;
slnew->next = NULL;
if (!slend) {
sl = slnew;
} else {
slend->next = slnew;
}
}
}
}
for (slit = sl; slit; slit = slit->next) {
lo_message_add_string(reply, slit->str);
free(slit->str);
}
lo_send_message(src, "#reply", reply);
lo_message_free(reply);
}
}
free(argv);
/* these are already part of data and will be freed later */
msg->data = NULL;
msg->types = NULL;
lo_address_free(src);
lo_message_free(msg);
}
int lo_server_events_pending(lo_server s)
{
return s->queued != 0;
}
static void queue_data(lo_server s, lo_timetag ts, void *data, size_t len)
{
/* insert blob into future dispatch queue */
queued_msg_list *it = s->queued;
queued_msg_list *prev = NULL;
queued_msg_list *ins = calloc(1, sizeof(queued_msg_list));
ins->ts = ts;
ins->len = len;
ins->data = malloc(len);
memcpy(ins->data, data, len);
while (it) {
if (lo_timetag_diff(it->ts, ts) > 0.0) {
if (prev) {
prev->next = ins;
} else {
s->queued = ins;
ins->next = NULL;
}
ins->next = it;
return;
}
prev = it;
it = it->next;
}
/* fell through, so this event is last */
if (prev) {
prev->next = ins;
} else {
s->queued = ins;
}
ins->next = NULL;
}
static int dispatch_queued(lo_server s)
{
char *path, *types, *data;
queued_msg_list *head = s->queued;
queued_msg_list *tailhead;
lo_timetag disp_time;
if (!head) {
lo_throw(s, LO_INT_ERR, "attempted to dispatch with empty queue",
"timeout");
return 1;
}
disp_time = head->ts;
do {
tailhead = head->next;
path = ((queued_msg_list *)s->queued)->data;
types = path + lo_strsize(path) + 1;
data = types + lo_strsize(types);
dispatch_method(s, path, types, data);
free(((queued_msg_list *)s->queued)->data);
free((queued_msg_list *)s->queued);
s->queued = tailhead;
head = tailhead;
} while (head && lo_timetag_diff(head->ts, disp_time) < FLT_EPSILON);
return 0;
}
lo_method lo_server_add_method(lo_server s, const char *path,
const char *typespec, lo_method_handler h,
void *user_data)
{
lo_method m = calloc(1, sizeof(struct _lo_method));
lo_method it;
if (path && strpbrk(path, " #*,?[]{}")) {
return NULL;
}
if (path) {
m->path = strdup(path);
} else {
m->path = NULL;
}
if (typespec) {
m->typespec = strdup(typespec);
} else {
m->typespec = NULL;
}
m->handler = h;
m->user_data = user_data;
m->next = NULL;
/* append the new method to the list */
if (!s->first) {
s->first = m;
} else {
/* get to the last member of the list */
for (it=s->first; it->next; it=it->next);
it->next = m;
}
return m;
}
void lo_server_del_method(lo_server s, const char *path,
const char *typespec)
{
lo_method it, prev, next;
int pattern = 0;
if (!s->first) return;
if (path) pattern = strpbrk(path, " #*,?[]{}") != NULL;
it = s->first;
prev = it;
while (it) {
/* incase we free it */
next = it->next;
/* If paths match or handler is wildcard */
if ((it->path == path) ||
(path && it->path && !strcmp(path, it->path)) ||
(pattern && lo_pattern_match(it->path, path))) {
/* If types match or handler is wildcard */
if ((it->typespec == typespec) ||
(typespec && it->typespec && !strcmp(typespec, it->typespec))
) {
/* Take care when removing the head. */
if (it == s->first) {
s->first = it->next;
} else {
prev->next = it->next;
}
next = it->next;
free((void *)it->path);
free((void *)it->typespec);
free(it);
it = prev;
}
}
prev = it;
if (it) it = next;
}
}
int lo_server_get_socket_fd(lo_server s)
{
if (s->protocol != LO_UDP &&
s->protocol != LO_TCP
#ifndef WIN32
&& s->protocol != LO_UNIX
#endif
) {
return -1; /* assume it is not supported */
}
return s->socket;
}
int lo_server_get_port(lo_server s)
{
if (!s) {
return 0;
}
return s->port;
}
char *lo_server_get_url(lo_server s)
{
int ret;
char *buf;
if (!s) {
return NULL;
}
if (s->protocol == LO_UDP || s->protocol == LO_TCP) {
char *proto = s->protocol == LO_UDP ? "udp" : "tcp";
ret = snprintf(NULL, 0, "osc.%s://%s:%d/", proto, s->hostname, s->port);
if (ret <= 0) {
/* this libc is not C99 compliant, guess a size */
ret = 1023;
}
buf = malloc((ret + 2) * sizeof(char));
snprintf(buf, ret+1, "osc.%s://%s:%d/", proto, s->hostname, s->port);
return buf;
}
#ifndef WIN32
else if (s->protocol == LO_UNIX) {
ret = snprintf(NULL, 0, "osc.unix:///%s", s->path);
if (ret <= 0) {
/* this libc is not C99 compliant, guess a size */
ret = 1023;
}
buf = malloc((ret + 2) * sizeof(char));
snprintf(buf, ret+1, "osc.unix:///%s", s->path);
return buf;
}
#endif
return NULL;
}
void lo_server_pp(lo_server s)
{
lo_method it;
printf("socket: %d\n\n", s->socket);
printf("Methods\n");
for (it = s->first; it; it = it->next) {
printf("\n");
lo_method_pp_prefix(it, " ");
}
}
static int lo_can_coerce_spec(const char *a, const char *b)
{
unsigned int i;
if (strlen(a) != strlen(b)) {
return 0;
}
for (i=0; a[i]; i++) {
if (!lo_can_coerce(a[i], b[i])) {
return 0;
}
}
return 1;
}
static int lo_can_coerce(char a, char b)
{
return ((a == b) ||
(lo_is_numerical_type(a) && lo_is_numerical_type(b)) ||
(lo_is_string_type(a) && lo_is_string_type (b)));
}
void lo_throw(lo_server s, int errnum, const char *message, const char *path)
{
if (s->err_h) {
(*s->err_h)(errnum, message, path);
}
}
/* vi:set ts=8 sts=4 sw=4: */