0,0 → 1,125 |
/* |
* Gopher protocol |
* |
* Copyright (c) 2009 Toshimitsu Kimura |
* |
* based on libavformat/http.c, Copyright (c) 2000, 2001 Fabrice Bellard |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg 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. |
* |
* FFmpeg 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 FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
#include "libavutil/avstring.h" |
#include "avformat.h" |
#include "internal.h" |
#include "network.h" |
#include "url.h" |
|
typedef struct { |
URLContext *hd; |
} GopherContext; |
|
static int gopher_write(URLContext *h, const uint8_t *buf, int size) |
{ |
GopherContext *s = h->priv_data; |
return ffurl_write(s->hd, buf, size); |
} |
|
static int gopher_connect(URLContext *h, const char *path) |
{ |
char buffer[1024]; |
|
if (!*path) return AVERROR(EINVAL); |
switch (*++path) { |
case '5': |
case '9': |
path = strchr(path, '/'); |
if (!path) return AVERROR(EINVAL); |
break; |
default: |
av_log(h, AV_LOG_WARNING, |
"Gopher protocol type '%c' not supported yet!\n", |
*path); |
return AVERROR(EINVAL); |
} |
|
/* send gopher sector */ |
snprintf(buffer, sizeof(buffer), "%s\r\n", path); |
|
if (gopher_write(h, buffer, strlen(buffer)) < 0) |
return AVERROR(EIO); |
|
return 0; |
} |
|
static int gopher_close(URLContext *h) |
{ |
GopherContext *s = h->priv_data; |
if (s->hd) { |
ffurl_close(s->hd); |
s->hd = NULL; |
} |
return 0; |
} |
|
static int gopher_open(URLContext *h, const char *uri, int flags) |
{ |
GopherContext *s = h->priv_data; |
char hostname[1024], auth[1024], path[1024], buf[1024]; |
int port, err; |
|
h->is_streamed = 1; |
|
/* needed in any case to build the host string */ |
av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port, |
path, sizeof(path), uri); |
|
if (port < 0) |
port = 70; |
|
ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL); |
|
s->hd = NULL; |
err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE, |
&h->interrupt_callback, NULL); |
if (err < 0) |
goto fail; |
|
if ((err = gopher_connect(h, path)) < 0) |
goto fail; |
return 0; |
fail: |
gopher_close(h); |
return err; |
} |
|
static int gopher_read(URLContext *h, uint8_t *buf, int size) |
{ |
GopherContext *s = h->priv_data; |
int len = ffurl_read(s->hd, buf, size); |
return len; |
} |
|
|
URLProtocol ff_gopher_protocol = { |
.name = "gopher", |
.url_open = gopher_open, |
.url_read = gopher_read, |
.url_write = gopher_write, |
.url_close = gopher_close, |
.priv_data_size = sizeof(GopherContext), |
.flags = URL_PROTOCOL_FLAG_NETWORK, |
}; |