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libavformat
gopher.c
Go to the documentation of this file.
1
/*
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* Gopher protocol
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*
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* Copyright (c) 2009 Toshimitsu Kimura
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*
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* based on libavformat/http.c, Copyright (c) 2000, 2001 Fabrice Bellard
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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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#include "
libavutil/avstring.h
"
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#include "
avformat.h
"
27
#include "
internal.h
"
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#include "
network.h
"
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#include "
url.h
"
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31
typedef
struct
{
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URLContext
*
hd
;
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}
GopherContext
;
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35
static
int
gopher_write
(
URLContext
*h,
const
uint8_t
*
buf
,
int
size
)
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{
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GopherContext
*
s
= h->
priv_data
;
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return
ffurl_write
(s->
hd
, buf, size);
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}
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static
int
gopher_connect
(
URLContext
*h,
const
char
*path)
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{
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char
buffer
[1024];
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if
(!*path)
return
AVERROR
(EINVAL);
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switch
(*++path) {
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case
'5'
:
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case
'9'
:
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path = strchr(path,
'/'
);
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if
(!path)
return
AVERROR
(EINVAL);
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break
;
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default
:
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av_log
(h,
AV_LOG_WARNING
,
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"Gopher protocol type '%c' not supported yet!\n"
,
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*path);
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return
AVERROR
(EINVAL);
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}
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/* send gopher sector */
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snprintf
(buffer,
sizeof
(buffer),
"%s\r\n"
, path);
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if
(
gopher_write
(h, buffer, strlen(buffer)) < 0)
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return
AVERROR
(EIO);
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return
0;
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}
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static
int
gopher_close
(
URLContext
*h)
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{
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GopherContext
*
s
= h->
priv_data
;
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if
(s->
hd
) {
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ffurl_close
(s->
hd
);
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s->
hd
= NULL;
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}
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return
0;
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}
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static
int
gopher_open
(
URLContext
*h,
const
char
*uri,
int
flags
)
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{
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GopherContext
*
s
= h->
priv_data
;
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char
hostname[1024], auth[1024], path[1024],
buf
[1024];
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int
port, err;
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h->
is_streamed
= 1;
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/* needed in any case to build the host string */
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av_url_split
(NULL, 0, auth,
sizeof
(auth), hostname,
sizeof
(hostname), &port,
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path,
sizeof
(path), uri);
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if
(port < 0)
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port = 70;
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ff_url_join
(buf,
sizeof
(buf),
"tcp"
, NULL, hostname, port, NULL);
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s->
hd
= NULL;
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err =
ffurl_open
(&s->
hd
, buf,
AVIO_FLAG_READ_WRITE
,
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&h->
interrupt_callback
, NULL);
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if
(err < 0)
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goto
fail;
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if
((err =
gopher_connect
(h, path)) < 0)
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goto
fail;
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return
0;
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fail:
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gopher_close
(h);
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return
err;
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}
108
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static
int
gopher_read
(
URLContext
*h,
uint8_t
*
buf
,
int
size
)
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{
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GopherContext
*
s
= h->
priv_data
;
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int
len
=
ffurl_read
(s->
hd
, buf, size);
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return
len
;
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}
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URLProtocol
ff_gopher_protocol
= {
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.
name
=
"gopher"
,
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.url_open =
gopher_open
,
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.url_read =
gopher_read
,
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.url_write =
gopher_write
,
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.url_close =
gopher_close
,
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.priv_data_size =
sizeof
(
GopherContext
),
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.
flags
=
URL_PROTOCOL_FLAG_NETWORK
,
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};
Generated on Wed Jul 10 2013 23:48:12 for FFmpeg by
1.8.2