mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-03 09:01:50 -05:00
5ea2783dda
* fix a bug regarding ipv6 binding git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@287 fefdeb5f-60dc-0310-8127-8f9354f1896f
403 lines
11 KiB
C
403 lines
11 KiB
C
/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/un.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#ifdef HAVE_LIBWRAP
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#include <tcpd.h>
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#endif
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#include "socket-server.h"
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#include "socket-util.h"
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#include "xmalloc.h"
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#include "util.h"
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#include "log.h"
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struct pa_socket_server {
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int ref;
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int fd;
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char *filename;
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char *tcpwrap_service;
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void (*on_connection)(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata);
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void *userdata;
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struct pa_io_event *io_event;
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struct pa_mainloop_api *mainloop;
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enum { SOCKET_SERVER_GENERIC, SOCKET_SERVER_IPV4, SOCKET_SERVER_UNIX, SOCKET_SERVER_IPV6 } type;
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};
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static void callback(struct pa_mainloop_api *mainloop, struct pa_io_event *e, int fd, enum pa_io_event_flags f, void *userdata) {
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struct pa_socket_server *s = userdata;
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struct pa_iochannel *io;
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int nfd;
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assert(s && s->mainloop == mainloop && s->io_event == e && e && fd >= 0 && fd == s->fd);
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pa_socket_server_ref(s);
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if ((nfd = accept(fd, NULL, NULL)) < 0) {
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pa_log(__FILE__": accept(): %s\n", strerror(errno));
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goto finish;
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}
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pa_fd_set_cloexec(nfd, 1);
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if (!s->on_connection) {
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close(nfd);
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goto finish;
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}
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#ifdef HAVE_LIBWRAP
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if (s->type == SOCKET_SERVER_IPV4 && s->tcpwrap_service) {
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struct request_info req;
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request_init(&req, RQ_DAEMON, s->tcpwrap_service, RQ_FILE, nfd, NULL);
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fromhost(&req);
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if (!hosts_access(&req)) {
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pa_log(__FILE__": TCP connection refused by tcpwrap.\n");
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close(nfd);
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goto finish;
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}
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pa_log(__FILE__": TCP connection accepted by tcpwrap.\n");
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}
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#endif
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/* There should be a check for socket type here */
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if (s->type == SOCKET_SERVER_IPV4)
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pa_socket_tcp_low_delay(fd);
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else
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pa_socket_low_delay(fd);
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io = pa_iochannel_new(s->mainloop, nfd, nfd);
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assert(io);
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s->on_connection(s, io, s->userdata);
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finish:
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pa_socket_server_unref(s);
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}
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struct pa_socket_server* pa_socket_server_new(struct pa_mainloop_api *m, int fd) {
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struct pa_socket_server *s;
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assert(m && fd >= 0);
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s = pa_xmalloc(sizeof(struct pa_socket_server));
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s->ref = 1;
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s->fd = fd;
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s->filename = NULL;
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s->on_connection = NULL;
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s->userdata = NULL;
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s->tcpwrap_service = NULL;
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s->mainloop = m;
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s->io_event = m->io_new(m, fd, PA_IO_EVENT_INPUT, callback, s);
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assert(s->io_event);
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s->type = SOCKET_SERVER_GENERIC;
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return s;
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}
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struct pa_socket_server* pa_socket_server_ref(struct pa_socket_server *s) {
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assert(s && s->ref >= 1);
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s->ref++;
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return s;
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}
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struct pa_socket_server* pa_socket_server_new_unix(struct pa_mainloop_api *m, const char *filename) {
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int fd = -1;
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struct sockaddr_un sa;
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struct pa_socket_server *s;
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assert(m && filename);
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if ((fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
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pa_log(__FILE__": socket(): %s\n", strerror(errno));
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goto fail;
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}
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pa_fd_set_cloexec(fd, 1);
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sa.sun_family = AF_LOCAL;
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strncpy(sa.sun_path, filename, sizeof(sa.sun_path)-1);
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sa.sun_path[sizeof(sa.sun_path) - 1] = 0;
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pa_socket_low_delay(fd);
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if (bind(fd, (struct sockaddr*) &sa, SUN_LEN(&sa)) < 0) {
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pa_log(__FILE__": bind(): %s\n", strerror(errno));
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goto fail;
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}
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if (listen(fd, 5) < 0) {
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pa_log(__FILE__": listen(): %s\n", strerror(errno));
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goto fail;
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}
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s = pa_socket_server_new(m, fd);
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assert(s);
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s->filename = pa_xstrdup(filename);
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s->type = SOCKET_SERVER_UNIX;
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return s;
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fail:
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if (fd >= 0)
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close(fd);
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return NULL;
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}
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struct pa_socket_server* pa_socket_server_new_ipv4(struct pa_mainloop_api *m, uint32_t address, uint16_t port, const char *tcpwrap_service) {
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struct pa_socket_server *ss;
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int fd = -1;
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struct sockaddr_in sa;
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int on = 1;
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assert(m && port);
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if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
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pa_log(__FILE__": socket(): %s\n", strerror(errno));
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goto fail;
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}
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pa_fd_set_cloexec(fd, 1);
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if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
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pa_log(__FILE__": setsockopt(): %s\n", strerror(errno));
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pa_socket_tcp_low_delay(fd);
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memset(&sa, 0, sizeof(sa));
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sa.sin_family = AF_INET;
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sa.sin_port = htons(port);
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sa.sin_addr.s_addr = htonl(address);
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if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
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pa_log(__FILE__": bind(): %s\n", strerror(errno));
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goto fail;
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}
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if (listen(fd, 5) < 0) {
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pa_log(__FILE__": listen(): %s\n", strerror(errno));
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goto fail;
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}
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if ((ss = pa_socket_server_new(m, fd))) {
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ss->type = SOCKET_SERVER_IPV4;
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ss->tcpwrap_service = pa_xstrdup(tcpwrap_service);
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}
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return ss;
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fail:
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if (fd >= 0)
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close(fd);
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return NULL;
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}
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struct pa_socket_server* pa_socket_server_new_ipv6(struct pa_mainloop_api *m, uint8_t address[16], uint16_t port) {
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struct pa_socket_server *ss;
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int fd = -1;
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struct sockaddr_in6 sa;
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int on = 1;
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assert(m && port);
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if ((fd = socket(PF_INET6, SOCK_STREAM, 0)) < 0) {
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pa_log(__FILE__": socket(): %s\n", strerror(errno));
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goto fail;
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}
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pa_fd_set_cloexec(fd, 1);
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if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
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pa_log(__FILE__": setsockopt(): %s\n", strerror(errno));
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pa_socket_tcp_low_delay(fd);
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memset(&sa, 0, sizeof(sa));
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sa.sin6_family = AF_INET6;
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sa.sin6_port = htons(port);
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memcpy(sa.sin6_addr.s6_addr, address, 16);
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if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
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pa_log(__FILE__": bind(): %s\n", strerror(errno));
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goto fail;
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}
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if (listen(fd, 5) < 0) {
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pa_log(__FILE__": listen(): %s\n", strerror(errno));
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goto fail;
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}
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if ((ss = pa_socket_server_new(m, fd)))
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ss->type = SOCKET_SERVER_IPV6;
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return ss;
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fail:
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if (fd >= 0)
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close(fd);
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return NULL;
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}
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static void socket_server_free(struct pa_socket_server*s) {
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assert(s);
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close(s->fd);
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if (s->filename) {
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unlink(s->filename);
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pa_xfree(s->filename);
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}
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pa_xfree(s->tcpwrap_service);
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s->mainloop->io_free(s->io_event);
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pa_xfree(s);
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}
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void pa_socket_server_unref(struct pa_socket_server *s) {
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assert(s && s->ref >= 1);
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if (!(--(s->ref)))
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socket_server_free(s);
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}
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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) {
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assert(s && s->ref >= 1);
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s->on_connection = on_connection;
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s->userdata = userdata;
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}
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char *pa_socket_server_get_address(struct pa_socket_server *s, char *c, size_t l) {
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assert(s && c && l > 0);
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switch (s->type) {
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case SOCKET_SERVER_IPV6: {
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struct sockaddr_in6 sa;
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socklen_t l = sizeof(sa);
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if (getsockname(s->fd, (struct sockaddr*) &sa, &l) < 0) {
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pa_log(__FILE__": getsockname() failed: %s\n", strerror(errno));
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return NULL;
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}
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if (memcmp(&in6addr_any, &sa.sin6_addr, sizeof(in6addr_any)) == 0) {
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char fqdn[256];
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if (!pa_get_fqdn(fqdn, sizeof(fqdn)))
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return NULL;
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snprintf(c, l, "tcp6:%s:%u", fqdn, (unsigned) ntohs(sa.sin6_port));
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} else if (memcmp(&in6addr_loopback, &sa.sin6_addr, sizeof(in6addr_loopback)) == 0) {
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char hn[256];
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if (!pa_get_host_name(hn, sizeof(hn)))
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return NULL;
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snprintf(c, l, "{%s}tcp6:localhost:%u", hn, (unsigned) ntohs(sa.sin6_port));
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} else {
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char ip[INET6_ADDRSTRLEN];
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if (!inet_ntop(AF_INET6, &sa.sin6_addr, ip, sizeof(ip))) {
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pa_log(__FILE__": inet_ntop() failed: %s\n", strerror(errno));
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return NULL;
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}
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snprintf(c, l, "tcp6:[%s]:%u", ip, (unsigned) ntohs(sa.sin6_port));
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}
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return c;
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}
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case SOCKET_SERVER_IPV4: {
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struct sockaddr_in sa;
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socklen_t l = sizeof(sa);
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if (getsockname(s->fd, &sa, &l) < 0) {
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pa_log(__FILE__": getsockname() failed: %s\n", strerror(errno));
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return NULL;
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}
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if (sa.sin_addr.s_addr == INADDR_ANY) {
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char fqdn[256];
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if (!pa_get_fqdn(fqdn, sizeof(fqdn)))
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return NULL;
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snprintf(c, l, "tcp:%s:%u", fqdn, (unsigned) ntohs(sa.sin_port));
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} else if (sa.sin_addr.s_addr == INADDR_LOOPBACK) {
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char hn[256];
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if (!pa_get_host_name(hn, sizeof(hn)))
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return NULL;
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snprintf(c, l, "{%s}tcp:localhost:%u", hn, (unsigned) ntohs(sa.sin_port));
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} else {
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char ip[INET_ADDRSTRLEN];
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if (!inet_ntop(AF_INET, &sa.sin_addr, ip, sizeof(ip))) {
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pa_log(__FILE__": inet_ntop() failed: %s\n", strerror(errno));
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return NULL;
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}
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snprintf(c, l, "tcp:[%s]:%u", ip, (unsigned) ntohs(sa.sin_port));
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}
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return c;
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}
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case SOCKET_SERVER_UNIX: {
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char hn[256];
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if (!s->filename)
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return NULL;
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if (!pa_get_host_name(hn, sizeof(hn)))
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return NULL;
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snprintf(c, l, "{%s}unix:%s", hn, s->filename);
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return c;
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}
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default:
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return NULL;
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}
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}
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