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![Bela Bodecs](/assets/img/avatar_default.png)
When recv() returns 0 in case of SOCK_STREAM type, it means EOF and with this patch returns value accordingly. Signed-off-by: Bela Bodecs <bodecsb@vivanet.hu>
159 lines
4.8 KiB
C
159 lines
4.8 KiB
C
/*
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* Unix socket protocol
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* Copyright (c) 2013 Luca Barbato
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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*
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* Unix socket url_protocol
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*/
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#include "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "os_support.h"
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#include "network.h"
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#include <sys/un.h>
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#include "url.h"
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typedef struct UnixContext {
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const AVClass *class;
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struct sockaddr_un addr;
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int timeout;
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int listen;
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int type;
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int fd;
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} UnixContext;
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#define OFFSET(x) offsetof(UnixContext, x)
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#define ED AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption unix_options[] = {
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{ "listen", "Open socket for listening", OFFSET(listen), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ED },
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{ "timeout", "Timeout in ms", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ED },
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{ "type", "Socket type", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
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{ "stream", "Stream (reliable stream-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
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{ "datagram", "Datagram (unreliable packet-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_DGRAM }, INT_MIN, INT_MAX, ED, "type" },
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{ "seqpacket", "Seqpacket (reliable packet-oriented", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_SEQPACKET }, INT_MIN, INT_MAX, ED, "type" },
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{ NULL }
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};
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static const AVClass unix_class = {
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.class_name = "unix",
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.item_name = av_default_item_name,
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.option = unix_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static int unix_open(URLContext *h, const char *filename, int flags)
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{
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UnixContext *s = h->priv_data;
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int fd, ret;
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av_strstart(filename, "unix:", &filename);
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s->addr.sun_family = AF_UNIX;
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av_strlcpy(s->addr.sun_path, filename, sizeof(s->addr.sun_path));
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if ((fd = ff_socket(AF_UNIX, s->type, 0)) < 0)
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return ff_neterrno();
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if (s->timeout < 0 && h->rw_timeout)
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s->timeout = h->rw_timeout / 1000;
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if (s->listen) {
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ret = ff_listen_bind(fd, (struct sockaddr *)&s->addr,
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sizeof(s->addr), s->timeout, h);
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if (ret < 0)
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goto fail;
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fd = ret;
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} else {
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ret = ff_listen_connect(fd, (struct sockaddr *)&s->addr,
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sizeof(s->addr), s->timeout, h, 0);
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if (ret < 0)
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goto fail;
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}
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s->fd = fd;
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return 0;
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fail:
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if (s->listen && AVUNERROR(ret) != EADDRINUSE)
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unlink(s->addr.sun_path);
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if (fd >= 0)
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closesocket(fd);
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return ret;
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}
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static int unix_read(URLContext *h, uint8_t *buf, int size)
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{
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UnixContext *s = h->priv_data;
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int ret;
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if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
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ret = ff_network_wait_fd(s->fd, 0);
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if (ret < 0)
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return ret;
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}
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ret = recv(s->fd, buf, size, 0);
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if (!ret && s->type == SOCK_STREAM)
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return AVERROR_EOF;
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return ret < 0 ? ff_neterrno() : ret;
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}
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static int unix_write(URLContext *h, const uint8_t *buf, int size)
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{
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UnixContext *s = h->priv_data;
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int ret;
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if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
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ret = ff_network_wait_fd(s->fd, 1);
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if (ret < 0)
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return ret;
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}
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ret = send(s->fd, buf, size, MSG_NOSIGNAL);
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return ret < 0 ? ff_neterrno() : ret;
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}
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static int unix_close(URLContext *h)
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{
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UnixContext *s = h->priv_data;
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if (s->listen)
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unlink(s->addr.sun_path);
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closesocket(s->fd);
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return 0;
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}
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static int unix_get_file_handle(URLContext *h)
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{
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UnixContext *s = h->priv_data;
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return s->fd;
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}
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const URLProtocol ff_unix_protocol = {
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.name = "unix",
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.url_open = unix_open,
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.url_read = unix_read,
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.url_write = unix_write,
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.url_close = unix_close,
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.url_get_file_handle = unix_get_file_handle,
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.priv_data_size = sizeof(UnixContext),
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.priv_data_class = &unix_class,
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.flags = URL_PROTOCOL_FLAG_NETWORK,
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};
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