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#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 "util.h"
struct socket_server {
int fd;
char *filename;
void (*on_connection)(struct socket_server*s, struct iochannel *io, void *userdata);
void *userdata;
void *mainloop_source;
struct pa_mainloop_api *mainloop;
};
static void callback(struct pa_mainloop_api *mainloop, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
struct socket_server *s = userdata;
struct iochannel *io;
int nfd;
assert(s && s->mainloop == mainloop && s->mainloop_source == id && id && fd >= 0 && fd == s->fd && events == PA_MAINLOOP_API_IO_EVENT_INPUT);
if ((nfd = accept(fd, NULL, NULL)) < 0) {
fprintf(stderr, "accept(): %s\n", strerror(errno));
return;
}
if (!s->on_connection) {
close(nfd);
return;
}
/* There should be a check for socket type here */
make_tcp_socket_low_delay(fd);
io = iochannel_new(s->mainloop, nfd, nfd);
assert(io);
s->on_connection(s, io, s->userdata);
}
struct socket_server* socket_server_new(struct pa_mainloop_api *m, int fd) {
struct socket_server *s;
assert(m && fd >= 0);
s = malloc(sizeof(struct socket_server));
assert(s);
s->fd = fd;
s->filename = NULL;
s->on_connection = NULL;
s->userdata = NULL;
s->mainloop = m;
s->mainloop_source = m->source_io(m, fd, PA_MAINLOOP_API_IO_EVENT_INPUT, callback, s);
assert(s->mainloop_source);
return s;
}
struct socket_server* socket_server_new_unix(struct pa_mainloop_api *m, const char *filename) {
int fd = -1;
struct sockaddr_un sa;
struct socket_server *s;
assert(m && filename);
if ((fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "socket(): %s\n", strerror(errno));
goto fail;
}
sa.sun_family = AF_LOCAL;
strncpy(sa.sun_path, filename, sizeof(sa.sun_path)-1);
sa.sun_path[sizeof(sa.sun_path) - 1] = 0;
make_socket_low_delay(fd);
if (bind(fd, (struct sockaddr*) &sa, SUN_LEN(&sa)) < 0) {
fprintf(stderr, "bind(): %s\n", strerror(errno));
goto fail;
}
if (listen(fd, 5) < 0) {
fprintf(stderr, "listen(): %s\n", strerror(errno));
goto fail;
}
s = socket_server_new(m, fd);
assert(s);
s->filename = strdup(filename);
assert(s->filename);
return s;
fail:
if (fd >= 0)
close(fd);
return NULL;
}
struct socket_server* socket_server_new_ipv4(struct pa_mainloop_api *m, uint32_t address, uint16_t port) {
int fd = -1;
struct sockaddr_in sa;
int on = 1;
assert(m && port);
if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "socket(): %s\n", strerror(errno));
goto fail;
}
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
fprintf(stderr, "setsockopt(): %s\n", strerror(errno));
make_tcp_socket_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) {
fprintf(stderr, "bind(): %s\n", strerror(errno));
goto fail;
}
if (listen(fd, 5) < 0) {
fprintf(stderr, "listen(): %s\n", strerror(errno));
goto fail;
}
return socket_server_new(m, fd);
fail:
if (fd >= 0)
close(fd);
return NULL;
}
void socket_server_free(struct socket_server*s) {
assert(s);
close(s->fd);
if (s->filename) {
unlink(s->filename);
free(s->filename);
}
s->mainloop->cancel_io(s->mainloop, s->mainloop_source);
free(s);
}
void socket_server_set_callback(struct socket_server*s, void (*on_connection)(struct socket_server*s, struct iochannel *io, void *userdata), void *userdata) {
assert(s);
s->on_connection = on_connection;
s->userdata = userdata;
}
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