| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Unix socket protocol | ||
| 3 | * Copyright (c) 2013 Luca Barbato | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * | ||
| 25 | * Unix socket url_protocol | ||
| 26 | */ | ||
| 27 | |||
| 28 | #include "libavutil/avstring.h" | ||
| 29 | #include "libavutil/opt.h" | ||
| 30 | #include "os_support.h" | ||
| 31 | #include "network.h" | ||
| 32 | #include <sys/un.h> | ||
| 33 | #include "url.h" | ||
| 34 | |||
| 35 | typedef struct UnixContext { | ||
| 36 | const AVClass *class; | ||
| 37 | struct sockaddr_un addr; | ||
| 38 | int timeout; | ||
| 39 | int listen; | ||
| 40 | int type; | ||
| 41 | int fd; | ||
| 42 | } UnixContext; | ||
| 43 | |||
| 44 | #define OFFSET(x) offsetof(UnixContext, x) | ||
| 45 | #define ED AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_ENCODING_PARAM | ||
| 46 | static const AVOption unix_options[] = { | ||
| 47 | { "listen", "Open socket for listening", OFFSET(listen), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ED }, | ||
| 48 | { "timeout", "Timeout in ms", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ED }, | ||
| 49 | { "type", "Socket type", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, .unit = "type" }, | ||
| 50 | { "stream", "Stream (reliable stream-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, .unit = "type" }, | ||
| 51 | { "datagram", "Datagram (unreliable packet-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_DGRAM }, INT_MIN, INT_MAX, ED, .unit = "type" }, | ||
| 52 | { "seqpacket", "Seqpacket (reliable packet-oriented", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_SEQPACKET }, INT_MIN, INT_MAX, ED, .unit = "type" }, | ||
| 53 | { NULL } | ||
| 54 | }; | ||
| 55 | |||
| 56 | static const AVClass unix_class = { | ||
| 57 | .class_name = "unix", | ||
| 58 | .item_name = av_default_item_name, | ||
| 59 | .option = unix_options, | ||
| 60 | .version = LIBAVUTIL_VERSION_INT, | ||
| 61 | }; | ||
| 62 | |||
| 63 | ✗ | static int unix_open(URLContext *h, const char *filename, int flags) | |
| 64 | { | ||
| 65 | ✗ | UnixContext *s = h->priv_data; | |
| 66 | int fd, ret; | ||
| 67 | |||
| 68 | ✗ | av_strstart(filename, "unix:", &filename); | |
| 69 | ✗ | s->addr.sun_family = AF_UNIX; | |
| 70 | ✗ | av_strlcpy(s->addr.sun_path, filename, sizeof(s->addr.sun_path)); | |
| 71 | |||
| 72 | ✗ | if ((fd = ff_socket(AF_UNIX, s->type, 0, h)) < 0) | |
| 73 | ✗ | return ff_neterrno(); | |
| 74 | |||
| 75 | ✗ | if (s->timeout < 0 && h->rw_timeout) | |
| 76 | ✗ | s->timeout = h->rw_timeout / 1000; | |
| 77 | |||
| 78 | ✗ | if (s->listen) { | |
| 79 | ✗ | ret = ff_listen_bind(fd, (struct sockaddr *)&s->addr, | |
| 80 | sizeof(s->addr), s->timeout, h); | ||
| 81 | ✗ | if (ret < 0) | |
| 82 | ✗ | goto fail; | |
| 83 | ✗ | fd = ret; | |
| 84 | } else { | ||
| 85 | ✗ | ret = ff_listen_connect(fd, (struct sockaddr *)&s->addr, | |
| 86 | sizeof(s->addr), s->timeout, h, 0); | ||
| 87 | ✗ | if (ret < 0) | |
| 88 | ✗ | goto fail; | |
| 89 | } | ||
| 90 | |||
| 91 | ✗ | s->fd = fd; | |
| 92 | |||
| 93 | ✗ | return 0; | |
| 94 | |||
| 95 | ✗ | fail: | |
| 96 | ✗ | if (s->listen && AVUNERROR(ret) != EADDRINUSE) | |
| 97 | ✗ | unlink(s->addr.sun_path); | |
| 98 | ✗ | if (fd >= 0) | |
| 99 | ✗ | closesocket(fd); | |
| 100 | ✗ | return ret; | |
| 101 | } | ||
| 102 | |||
| 103 | ✗ | static int unix_read(URLContext *h, uint8_t *buf, int size) | |
| 104 | { | ||
| 105 | ✗ | UnixContext *s = h->priv_data; | |
| 106 | int ret; | ||
| 107 | |||
| 108 | ✗ | if (!(h->flags & AVIO_FLAG_NONBLOCK)) { | |
| 109 | ✗ | ret = ff_network_wait_fd(s->fd, 0); | |
| 110 | ✗ | if (ret < 0) | |
| 111 | ✗ | return ret; | |
| 112 | } | ||
| 113 | ✗ | ret = recv(s->fd, buf, size, 0); | |
| 114 | ✗ | if (!ret && s->type == SOCK_STREAM) | |
| 115 | ✗ | return AVERROR_EOF; | |
| 116 | ✗ | return ret < 0 ? ff_neterrno() : ret; | |
| 117 | } | ||
| 118 | |||
| 119 | ✗ | static int unix_write(URLContext *h, const uint8_t *buf, int size) | |
| 120 | { | ||
| 121 | ✗ | UnixContext *s = h->priv_data; | |
| 122 | int ret; | ||
| 123 | |||
| 124 | ✗ | if (!(h->flags & AVIO_FLAG_NONBLOCK)) { | |
| 125 | ✗ | ret = ff_network_wait_fd(s->fd, 1); | |
| 126 | ✗ | if (ret < 0) | |
| 127 | ✗ | return ret; | |
| 128 | } | ||
| 129 | ✗ | ret = send(s->fd, buf, size, MSG_NOSIGNAL); | |
| 130 | ✗ | return ret < 0 ? ff_neterrno() : ret; | |
| 131 | } | ||
| 132 | |||
| 133 | ✗ | static int unix_close(URLContext *h) | |
| 134 | { | ||
| 135 | ✗ | UnixContext *s = h->priv_data; | |
| 136 | ✗ | if (s->listen) | |
| 137 | ✗ | unlink(s->addr.sun_path); | |
| 138 | ✗ | closesocket(s->fd); | |
| 139 | ✗ | return 0; | |
| 140 | } | ||
| 141 | |||
| 142 | ✗ | static int unix_get_file_handle(URLContext *h) | |
| 143 | { | ||
| 144 | ✗ | UnixContext *s = h->priv_data; | |
| 145 | ✗ | return s->fd; | |
| 146 | } | ||
| 147 | |||
| 148 | const URLProtocol ff_unix_protocol = { | ||
| 149 | .name = "unix", | ||
| 150 | .url_open = unix_open, | ||
| 151 | .url_read = unix_read, | ||
| 152 | .url_write = unix_write, | ||
| 153 | .url_close = unix_close, | ||
| 154 | .url_get_file_handle = unix_get_file_handle, | ||
| 155 | .priv_data_size = sizeof(UnixContext), | ||
| 156 | .priv_data_class = &unix_class, | ||
| 157 | .flags = URL_PROTOCOL_FLAG_NETWORK, | ||
| 158 | }; | ||
| 159 |