From 605387582bd35920b83a26dabbe1c0601f425621 Mon Sep 17 00:00:00 2001 From: Luca Barbato Date: Tue, 30 Jul 2013 01:34:56 +0200 Subject: lavf: Support unix sockets --- libavformat/unix.c | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 libavformat/unix.c (limited to 'libavformat/unix.c') diff --git a/libavformat/unix.c b/libavformat/unix.c new file mode 100644 index 0000000000..167efabf41 --- /dev/null +++ b/libavformat/unix.c @@ -0,0 +1,156 @@ +/* + * Unix socket protocol + * Copyright (c) 2013 Luca Barbato + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * + * Unix socket url_protocol + * + */ + +#include + +#include "libavutil/avstring.h" +#include "libavutil/opt.h" +#include "os_support.h" +#include "network.h" +#include "url.h" + +typedef struct UnixContext { + const AVClass *class; + struct sockaddr_un addr; + int timeout; + int listen; + int type; + int fd; +} UnixContext; + +#define OFFSET(x) offsetof(UnixContext, x) +#define ED AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_ENCODING_PARAM +static const AVOption unix_options[] = { + { "listen", "Open socket for listening", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ED }, + { "timeout", "Timeout in ms", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ED }, + { "type", "Socket type", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" }, + { "stream", "Stream (reliable stream-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" }, + { "datagram", "Datagram (unreliable packet-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_DGRAM }, INT_MIN, INT_MAX, ED, "type" }, + { "seqpacket", "Seqpacket (reliable packet-oriented", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_SEQPACKET }, INT_MIN, INT_MAX, ED, "type" }, + { NULL } +}; + +static const AVClass unix_class = { + .class_name = "unix", + .item_name = av_default_item_name, + .option = unix_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static int unix_open(URLContext *h, const char *filename, int flags) +{ + UnixContext *s = h->priv_data; + int fd, ret; + + av_strstart(filename, "unix:", &filename); + s->addr.sun_family = AF_UNIX; + av_strlcpy(s->addr.sun_path, filename, sizeof(s->addr.sun_path)); + + if ((fd = socket(AF_UNIX, s->type, 0)) < 0) + return ff_neterrno(); + + if (s->listen) { + fd = ff_listen_bind(fd, (struct sockaddr *)&s->addr, + sizeof(s->addr), s->timeout, h); + if (fd < 0) { + ret = fd; + goto fail; + } + } else { + ret = ff_listen_connect(fd, (struct sockaddr *)&s->addr, + sizeof(s->addr), s->timeout, h); + if (ret < 0) + goto fail; + } + + s->fd = fd; + + return 0; + +fail: + if (s->listen && ret != EADDRINUSE) + unlink(s->addr.sun_path); + if (fd >= 0) + closesocket(fd); + return ret; +} + +static int unix_read(URLContext *h, uint8_t *buf, int size) +{ + UnixContext *s = h->priv_data; + int ret; + + if (!(h->flags & AVIO_FLAG_NONBLOCK)) { + ret = ff_network_wait_fd(s->fd, 0); + if (ret < 0) + return ret; + } + ret = recv(s->fd, buf, size, 0); + return ret < 0 ? ff_neterrno() : ret; +} + +static int unix_write(URLContext *h, const uint8_t *buf, int size) +{ + UnixContext *s = h->priv_data; + int ret; + + if (!(h->flags & AVIO_FLAG_NONBLOCK)) { + ret = ff_network_wait_fd(s->fd, 1); + if (ret < 0) + return ret; + } + ret = send(s->fd, buf, size, 0); + return ret < 0 ? ff_neterrno() : ret; +} + +static int unix_close(URLContext *h) +{ + UnixContext *s = h->priv_data; + if (s->listen) + unlink(s->addr.sun_path); + closesocket(s->fd); + return 0; +} + +static int unix_get_file_handle(URLContext *h) +{ + UnixContext *s = h->priv_data; + return s->fd; +} + +URLProtocol ff_unix_protocol = { + .name = "unix", + .url_open = unix_open, + .url_read = unix_read, + .url_write = unix_write, + .url_close = unix_close, + .url_get_file_handle = unix_get_file_handle, + .priv_data_size = sizeof(UnixContext), + .priv_data_class = &unix_class, + .flags = URL_PROTOCOL_FLAG_NETWORK, +}; -- cgit v1.2.3