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/*
* 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" |
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#include "internal.h" |
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#include "network.h" |
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#include "url.h" |
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typedef struct {
URLContext *hd;
} GopherContext;
|
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static int gopher_write(URLContext *h, const uint8_t *buf, int size) |
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{
GopherContext *s = h->priv_data; |
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return ffurl_write(s->hd, buf, size); |
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}
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: |
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av_log(h, AV_LOG_WARNING, |
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"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) { |
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ffurl_close(s->hd); |
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s->hd = NULL;
}
return 0;
}
static int gopher_open(URLContext *h, const char *uri, int flags)
{ |
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GopherContext *s = h->priv_data; |
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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 */ |
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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)
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,
&h->interrupt_callback, NULL); |
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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; |
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int len = ffurl_read(s->hd, buf, size); |
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return len;
}
|
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URLProtocol ff_gopher_protocol = { |
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.name = "gopher",
.url_open = gopher_open,
.url_read = gopher_read,
.url_write = gopher_write,
.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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}; |