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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio 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.
polypaudio 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 polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "socket-server.h"
#include "socket-util.h"
#include "xmalloc.h"
#include "util.h"
#include "log.h"
struct pa_socket_server {
int ref;
int fd;
char *filename;
void (*on_connection)(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata);
void *userdata;
struct pa_io_event *io_event;
struct pa_mainloop_api *mainloop;
enum { SOCKET_SERVER_GENERIC, SOCKET_SERVER_IPV4, SOCKET_SERVER_UNIX } type;
};
static void callback(struct pa_mainloop_api *mainloop, struct pa_io_event *e, int fd, enum pa_io_event_flags f, void *userdata) {
struct pa_socket_server *s = userdata;
struct pa_iochannel *io;
int nfd;
assert(s && s->mainloop == mainloop && s->io_event == e && e && fd >= 0 && fd == s->fd);
pa_socket_server_ref(s);
if ((nfd = accept(fd, NULL, NULL)) < 0) {
pa_log(__FILE__": accept(): %s\n", strerror(errno));
goto finish;
}
pa_fd_set_cloexec(nfd, 1);
if (!s->on_connection) {
close(nfd);
goto finish;
}
/* There should be a check for socket type here */
if (s->type == SOCKET_SERVER_IPV4)
pa_socket_tcp_low_delay(fd);
else
pa_socket_low_delay(fd);
io = pa_iochannel_new(s->mainloop, nfd, nfd);
assert(io);
s->on_connection(s, io, s->userdata);
finish:
pa_socket_server_unref(s);
}
struct pa_socket_server* pa_socket_server_new(struct pa_mainloop_api *m, int fd) {
struct pa_socket_server *s;
assert(m && fd >= 0);
s = pa_xmalloc(sizeof(struct pa_socket_server));
s->ref = 1;
s->fd = fd;
s->filename = NULL;
s->on_connection = NULL;
s->userdata = NULL;
s->mainloop = m;
s->io_event = m->io_new(m, fd, PA_IO_EVENT_INPUT, callback, s);
assert(s->io_event);
s->type = SOCKET_SERVER_GENERIC;
return s;
}
struct pa_socket_server* pa_socket_server_ref(struct pa_socket_server *s) {
assert(s && s->ref >= 1);
s->ref++;
return s;
}
struct pa_socket_server* pa_socket_server_new_unix(struct pa_mainloop_api *m, const char *filename) {
int fd = -1;
struct sockaddr_un sa;
struct pa_socket_server *s;
assert(m && filename);
if ((fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
pa_log(__FILE__": socket(): %s\n", strerror(errno));
goto fail;
}
pa_fd_set_cloexec(fd, 1);
sa.sun_family = AF_LOCAL;
strncpy(sa.sun_path, filename, sizeof(sa.sun_path)-1);
sa.sun_path[sizeof(sa.sun_path) - 1] = 0;
pa_socket_low_delay(fd);
if (bind(fd, (struct sockaddr*) &sa, SUN_LEN(&sa)) < 0) {
pa_log(__FILE__": bind(): %s\n", strerror(errno));
goto fail;
}
if (listen(fd, 5) < 0) {
pa_log(__FILE__": listen(): %s\n", strerror(errno));
goto fail;
}
s = pa_socket_server_new(m, fd);
assert(s);
s->filename = pa_xstrdup(filename);
s->type = SOCKET_SERVER_UNIX;
return s;
fail:
if (fd >= 0)
close(fd);
return NULL;
}
struct pa_socket_server* pa_socket_server_new_ipv4(struct pa_mainloop_api *m, uint32_t address, uint16_t port) {
struct pa_socket_server *ss;
int fd = -1;
struct sockaddr_in sa;
int on = 1;
assert(m && port);
if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
pa_log(__FILE__": socket(): %s\n", strerror(errno));
goto fail;
}
pa_fd_set_cloexec(fd, 1);
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
pa_log(__FILE__": setsockopt(): %s\n", strerror(errno));
pa_socket_tcp_low_delay(fd);
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
sa.sin_addr.s_addr = htonl(address);
if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
pa_log(__FILE__": bind(): %s\n", strerror(errno));
goto fail;
}
if (listen(fd, 5) < 0) {
pa_log(__FILE__": listen(): %s\n", strerror(errno));
goto fail;
}
if ((ss = pa_socket_server_new(m, fd)))
ss->type = SOCKET_SERVER_IPV4;
return ss;
fail:
if (fd >= 0)
close(fd);
return NULL;
}
static void socket_server_free(struct pa_socket_server*s) {
assert(s);
close(s->fd);
if (s->filename) {
unlink(s->filename);
pa_xfree(s->filename);
}
s->mainloop->io_free(s->io_event);
pa_xfree(s);
}
void pa_socket_server_unref(struct pa_socket_server *s) {
assert(s && s->ref >= 1);
if (!(--(s->ref)))
socket_server_free(s);
}
void pa_socket_server_set_callback(struct pa_socket_server*s, void (*on_connection)(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata), void *userdata) {
assert(s && s->ref >= 1);
s->on_connection = on_connection;
s->userdata = userdata;
}
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