2007-02-28 04:40:23 +01:00
|
|
|
/*
|
|
|
|
* HTTP protocol for ffmpeg client
|
2009-01-19 16:46:40 +01:00
|
|
|
* Copyright (c) 2000, 2001 Fabrice Bellard
|
2007-02-28 04:40:23 +01:00
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|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* This file is part of Libav.
|
2007-02-28 04:40:23 +01:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* Libav is free software; you can redistribute it and/or
|
2007-02-28 04:40:23 +01:00
|
|
|
* 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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|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* Libav is distributed in the hope that it will be useful,
|
2007-02-28 04:40:23 +01:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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|
|
|
* Lesser General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 18:35:10 +01:00
|
|
|
* License along with Libav; if not, write to the Free Software
|
2007-02-28 04:40:23 +01:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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|
|
*/
|
2008-05-09 13:56:36 +02:00
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|
|
|
|
#include "libavutil/avstring.h"
|
2007-02-28 04:40:23 +01:00
|
|
|
#include "avformat.h"
|
|
|
|
#include <unistd.h>
|
2009-06-23 17:38:53 +02:00
|
|
|
#include <strings.h>
|
2010-03-15 00:59:48 +01:00
|
|
|
#include "internal.h"
|
2007-02-28 04:40:23 +01:00
|
|
|
#include "network.h"
|
2010-06-08 12:26:16 +02:00
|
|
|
#include "http.h"
|
2007-11-22 03:27:39 +01:00
|
|
|
#include "os_support.h"
|
2010-03-24 23:32:05 +01:00
|
|
|
#include "httpauth.h"
|
2011-03-31 16:25:10 +02:00
|
|
|
#include "url.h"
|
2010-09-26 16:25:22 +02:00
|
|
|
#include "libavutil/opt.h"
|
2007-02-28 04:40:23 +01:00
|
|
|
|
2007-04-07 16:09:20 +02:00
|
|
|
/* XXX: POST protocol is not completely implemented because ffmpeg uses
|
|
|
|
only a subset of it. */
|
2007-02-28 04:40:23 +01:00
|
|
|
|
|
|
|
/* used for protocol handling */
|
|
|
|
#define BUFFER_SIZE 1024
|
|
|
|
#define MAX_REDIRECTS 8
|
|
|
|
|
|
|
|
typedef struct {
|
2010-06-22 16:13:55 +02:00
|
|
|
const AVClass *class;
|
2007-02-28 04:40:23 +01:00
|
|
|
URLContext *hd;
|
|
|
|
unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
|
|
|
|
int line_count;
|
|
|
|
int http_code;
|
2009-06-23 17:38:53 +02:00
|
|
|
int64_t chunksize; /**< Used if "Transfer-Encoding: chunked" otherwise -1. */
|
2008-10-03 12:16:29 +02:00
|
|
|
int64_t off, filesize;
|
2010-08-19 16:50:40 +02:00
|
|
|
char location[MAX_URL_SIZE];
|
2010-03-24 23:32:05 +01:00
|
|
|
HTTPAuthState auth_state;
|
2010-06-08 12:26:16 +02:00
|
|
|
unsigned char headers[BUFFER_SIZE];
|
2010-08-09 10:14:48 +02:00
|
|
|
int willclose; /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */
|
2007-02-28 04:40:23 +01:00
|
|
|
} HTTPContext;
|
|
|
|
|
2010-06-22 16:13:55 +02:00
|
|
|
#define OFFSET(x) offsetof(HTTPContext, x)
|
|
|
|
static const AVOption options[] = {
|
|
|
|
{"chunksize", "use chunked transfer-encoding for posts, -1 disables it, 0 enables it", OFFSET(chunksize), FF_OPT_TYPE_INT64, 0, -1, 0 }, /* Default to 0, for chunked POSTs */
|
|
|
|
{NULL}
|
|
|
|
};
|
|
|
|
static const AVClass httpcontext_class = {
|
|
|
|
"HTTP", av_default_item_name, options, LIBAVUTIL_VERSION_INT
|
|
|
|
};
|
|
|
|
|
2007-02-28 04:40:23 +01:00
|
|
|
static int http_connect(URLContext *h, const char *path, const char *hoststr,
|
|
|
|
const char *auth, int *new_location);
|
|
|
|
|
2010-06-08 12:26:16 +02:00
|
|
|
void ff_http_set_headers(URLContext *h, const char *headers)
|
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
int len = strlen(headers);
|
|
|
|
|
|
|
|
if (len && strcmp("\r\n", headers + len - 2))
|
2011-04-20 11:40:29 +02:00
|
|
|
av_log(h, AV_LOG_ERROR, "No trailing CRLF found in HTTP header.\n");
|
2010-06-08 12:26:16 +02:00
|
|
|
|
|
|
|
av_strlcpy(s->headers, headers, sizeof(s->headers));
|
|
|
|
}
|
2007-02-28 04:40:23 +01:00
|
|
|
|
2010-06-08 13:48:03 +02:00
|
|
|
void ff_http_set_chunked_transfer_encoding(URLContext *h, int is_chunked)
|
|
|
|
{
|
2010-06-21 21:01:32 +02:00
|
|
|
((HTTPContext*)h->priv_data)->chunksize = is_chunked ? 0 : -1;
|
2010-06-08 13:48:03 +02:00
|
|
|
}
|
|
|
|
|
2010-06-21 21:40:30 +02:00
|
|
|
void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
|
|
|
|
{
|
|
|
|
memcpy(&((HTTPContext*)dest->priv_data)->auth_state,
|
|
|
|
&((HTTPContext*)src->priv_data)->auth_state, sizeof(HTTPAuthState));
|
|
|
|
}
|
|
|
|
|
2007-02-28 04:40:23 +01:00
|
|
|
/* return non zero if error */
|
|
|
|
static int http_open_cnx(URLContext *h)
|
|
|
|
{
|
|
|
|
const char *path, *proxy_path;
|
|
|
|
char hostname[1024], hoststr[1024];
|
|
|
|
char auth[1024];
|
|
|
|
char path1[1024];
|
|
|
|
char buf[1024];
|
|
|
|
int port, use_proxy, err, location_changed = 0, redirects = 0;
|
2010-03-24 23:32:05 +01:00
|
|
|
HTTPAuthType cur_auth_type;
|
2007-02-28 04:40:23 +01:00
|
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
URLContext *hd = NULL;
|
|
|
|
|
|
|
|
proxy_path = getenv("http_proxy");
|
|
|
|
use_proxy = (proxy_path != NULL) && !getenv("no_proxy") &&
|
2007-06-24 13:27:12 +02:00
|
|
|
av_strstart(proxy_path, "http://", NULL);
|
2007-02-28 04:40:23 +01:00
|
|
|
|
|
|
|
/* fill the dest addr */
|
|
|
|
redo:
|
|
|
|
/* needed in any case to build the host string */
|
2010-06-27 16:16:46 +02:00
|
|
|
av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
|
2010-03-08 10:05:03 +01:00
|
|
|
path1, sizeof(path1), s->location);
|
2010-03-05 23:35:21 +01:00
|
|
|
ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
|
2007-02-28 04:40:23 +01:00
|
|
|
|
|
|
|
if (use_proxy) {
|
2010-06-27 16:16:46 +02:00
|
|
|
av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
|
2010-03-08 10:05:03 +01:00
|
|
|
NULL, 0, proxy_path);
|
2007-02-28 04:40:23 +01:00
|
|
|
path = s->location;
|
|
|
|
} else {
|
|
|
|
if (path1[0] == '\0')
|
|
|
|
path = "/";
|
|
|
|
else
|
|
|
|
path = path1;
|
|
|
|
}
|
|
|
|
if (port < 0)
|
|
|
|
port = 80;
|
|
|
|
|
2010-03-05 23:35:21 +01:00
|
|
|
ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
|
2011-04-15 16:42:09 +02:00
|
|
|
err = ffurl_open(&hd, buf, AVIO_FLAG_READ_WRITE);
|
2007-02-28 04:40:23 +01:00
|
|
|
if (err < 0)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
s->hd = hd;
|
2010-03-24 23:32:05 +01:00
|
|
|
cur_auth_type = s->auth_state.auth_type;
|
2007-02-28 04:40:23 +01:00
|
|
|
if (http_connect(h, path, hoststr, auth, &location_changed) < 0)
|
|
|
|
goto fail;
|
2010-03-24 23:32:05 +01:00
|
|
|
if (s->http_code == 401) {
|
|
|
|
if (cur_auth_type == HTTP_AUTH_NONE && s->auth_state.auth_type != HTTP_AUTH_NONE) {
|
2011-03-31 17:36:06 +02:00
|
|
|
ffurl_close(hd);
|
2010-03-24 23:32:05 +01:00
|
|
|
goto redo;
|
|
|
|
} else
|
|
|
|
goto fail;
|
|
|
|
}
|
2010-11-02 21:37:01 +01:00
|
|
|
if ((s->http_code == 301 || s->http_code == 302 || s->http_code == 303 || s->http_code == 307)
|
|
|
|
&& location_changed == 1) {
|
2007-02-28 04:40:23 +01:00
|
|
|
/* url moved, get next */
|
2011-03-31 17:36:06 +02:00
|
|
|
ffurl_close(hd);
|
2007-02-28 04:40:23 +01:00
|
|
|
if (redirects++ >= MAX_REDIRECTS)
|
2007-07-19 17:23:32 +02:00
|
|
|
return AVERROR(EIO);
|
2007-02-28 04:40:23 +01:00
|
|
|
location_changed = 0;
|
|
|
|
goto redo;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
|
|
if (hd)
|
2011-03-31 17:36:06 +02:00
|
|
|
ffurl_close(hd);
|
2010-06-08 13:18:22 +02:00
|
|
|
s->hd = NULL;
|
2007-07-19 17:23:32 +02:00
|
|
|
return AVERROR(EIO);
|
2007-02-28 04:40:23 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
static int http_open(URLContext *h, const char *uri, int flags)
|
|
|
|
{
|
2010-06-22 16:12:34 +02:00
|
|
|
HTTPContext *s = h->priv_data;
|
2007-02-28 04:40:23 +01:00
|
|
|
|
|
|
|
h->is_streamed = 1;
|
|
|
|
|
|
|
|
s->filesize = -1;
|
2010-08-19 16:50:40 +02:00
|
|
|
av_strlcpy(s->location, uri, sizeof(s->location));
|
2007-02-28 04:40:23 +01:00
|
|
|
|
2010-06-22 16:15:00 +02:00
|
|
|
return http_open_cnx(h);
|
2007-02-28 04:40:23 +01:00
|
|
|
}
|
|
|
|
static int http_getc(HTTPContext *s)
|
|
|
|
{
|
|
|
|
int len;
|
|
|
|
if (s->buf_ptr >= s->buf_end) {
|
2011-03-31 16:31:43 +02:00
|
|
|
len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
|
2007-02-28 04:40:23 +01:00
|
|
|
if (len < 0) {
|
2007-07-19 17:23:32 +02:00
|
|
|
return AVERROR(EIO);
|
2007-02-28 04:40:23 +01:00
|
|
|
} else if (len == 0) {
|
|
|
|
return -1;
|
|
|
|
} else {
|
|
|
|
s->buf_ptr = s->buffer;
|
|
|
|
s->buf_end = s->buffer + len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return *s->buf_ptr++;
|
|
|
|
}
|
|
|
|
|
2009-06-06 18:44:21 +02:00
|
|
|
static int http_get_line(HTTPContext *s, char *line, int line_size)
|
|
|
|
{
|
|
|
|
int ch;
|
|
|
|
char *q;
|
|
|
|
|
|
|
|
q = line;
|
|
|
|
for(;;) {
|
|
|
|
ch = http_getc(s);
|
|
|
|
if (ch < 0)
|
|
|
|
return AVERROR(EIO);
|
|
|
|
if (ch == '\n') {
|
|
|
|
/* process line */
|
|
|
|
if (q > line && q[-1] == '\r')
|
|
|
|
q--;
|
|
|
|
*q = '\0';
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
} else {
|
|
|
|
if ((q - line) < line_size - 1)
|
|
|
|
*q++ = ch;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-02-28 04:40:23 +01:00
|
|
|
static int process_line(URLContext *h, char *line, int line_count,
|
|
|
|
int *new_location)
|
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
2010-07-16 16:15:37 +02:00
|
|
|
char *tag, *p, *end;
|
2007-02-28 04:40:23 +01:00
|
|
|
|
|
|
|
/* end of header */
|
|
|
|
if (line[0] == '\0')
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
p = line;
|
|
|
|
if (line_count == 0) {
|
|
|
|
while (!isspace(*p) && *p != '\0')
|
|
|
|
p++;
|
|
|
|
while (isspace(*p))
|
|
|
|
p++;
|
2010-07-16 16:15:37 +02:00
|
|
|
s->http_code = strtol(p, &end, 10);
|
2009-06-06 19:32:59 +02:00
|
|
|
|
2011-01-29 17:46:18 +01:00
|
|
|
av_dlog(NULL, "http_code=%d\n", s->http_code);
|
2009-06-06 19:32:59 +02:00
|
|
|
|
2010-03-24 23:32:05 +01:00
|
|
|
/* error codes are 4xx and 5xx, but regard 401 as a success, so we
|
|
|
|
* don't abort until all headers have been parsed. */
|
2010-07-16 16:15:37 +02:00
|
|
|
if (s->http_code >= 400 && s->http_code < 600 && s->http_code != 401) {
|
|
|
|
end += strspn(end, SPACE_CHARS);
|
2011-04-20 11:40:29 +02:00
|
|
|
av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n",
|
2010-07-16 16:15:37 +02:00
|
|
|
s->http_code, end);
|
2007-03-06 14:38:41 +01:00
|
|
|
return -1;
|
2010-07-16 16:15:37 +02:00
|
|
|
}
|
2007-02-28 04:40:23 +01:00
|
|
|
} else {
|
|
|
|
while (*p != '\0' && *p != ':')
|
|
|
|
p++;
|
|
|
|
if (*p != ':')
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
*p = '\0';
|
|
|
|
tag = line;
|
|
|
|
p++;
|
|
|
|
while (isspace(*p))
|
|
|
|
p++;
|
2011-03-27 01:59:09 +01:00
|
|
|
if (!strcasecmp(tag, "Location")) {
|
2007-02-28 04:40:23 +01:00
|
|
|
strcpy(s->location, p);
|
|
|
|
*new_location = 1;
|
2011-03-27 01:59:09 +01:00
|
|
|
} else if (!strcasecmp (tag, "Content-Length") && s->filesize == -1) {
|
2007-02-28 04:40:23 +01:00
|
|
|
s->filesize = atoll(p);
|
2011-03-27 01:59:09 +01:00
|
|
|
} else if (!strcasecmp (tag, "Content-Range")) {
|
2007-02-28 04:40:23 +01:00
|
|
|
/* "bytes $from-$to/$document_size" */
|
|
|
|
const char *slash;
|
|
|
|
if (!strncmp (p, "bytes ", 6)) {
|
|
|
|
p += 6;
|
|
|
|
s->off = atoll(p);
|
|
|
|
if ((slash = strchr(p, '/')) && strlen(slash) > 0)
|
|
|
|
s->filesize = atoll(slash+1);
|
|
|
|
}
|
|
|
|
h->is_streamed = 0; /* we _can_ in fact seek */
|
2011-03-27 01:59:09 +01:00
|
|
|
} else if (!strcasecmp (tag, "Transfer-Encoding") && !strncasecmp(p, "chunked", 7)) {
|
2009-06-23 17:38:53 +02:00
|
|
|
s->filesize = -1;
|
|
|
|
s->chunksize = 0;
|
2011-03-27 01:59:09 +01:00
|
|
|
} else if (!strcasecmp (tag, "WWW-Authenticate")) {
|
2010-03-24 23:32:05 +01:00
|
|
|
ff_http_auth_handle_header(&s->auth_state, tag, p);
|
2011-03-27 01:59:09 +01:00
|
|
|
} else if (!strcasecmp (tag, "Authentication-Info")) {
|
2010-03-24 23:32:05 +01:00
|
|
|
ff_http_auth_handle_header(&s->auth_state, tag, p);
|
2011-03-27 01:59:09 +01:00
|
|
|
} else if (!strcasecmp (tag, "Connection")) {
|
2010-08-09 10:14:48 +02:00
|
|
|
if (!strcmp(p, "close"))
|
|
|
|
s->willclose = 1;
|
2007-02-28 04:40:23 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2010-06-08 12:26:16 +02:00
|
|
|
static inline int has_header(const char *str, const char *header)
|
|
|
|
{
|
|
|
|
/* header + 2 to skip over CRLF prefix. (make sure you have one!) */
|
|
|
|
return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
|
|
|
|
}
|
|
|
|
|
2007-02-28 04:40:23 +01:00
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static int http_connect(URLContext *h, const char *path, const char *hoststr,
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const char *auth, int *new_location)
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{
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HTTPContext *s = h->priv_data;
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2009-06-06 18:44:21 +02:00
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int post, err;
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char line[1024];
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2010-06-08 13:06:36 +02:00
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char headers[1024] = "";
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2010-03-24 23:32:05 +01:00
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char *authstr = NULL;
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2008-10-03 12:16:29 +02:00
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int64_t off = s->off;
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2010-06-08 12:26:16 +02:00
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int len = 0;
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2007-02-28 04:40:23 +01:00
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/* send http header */
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2011-04-15 16:42:09 +02:00
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post = h->flags & AVIO_FLAG_WRITE;
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2010-03-24 23:32:05 +01:00
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authstr = ff_http_auth_create_response(&s->auth_state, auth, path,
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post ? "POST" : "GET");
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2010-06-08 12:26:16 +02:00
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/* set default headers if needed */
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if (!has_header(s->headers, "\r\nUser-Agent: "))
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len += av_strlcatf(headers + len, sizeof(headers) - len,
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"User-Agent: %s\r\n", LIBAVFORMAT_IDENT);
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if (!has_header(s->headers, "\r\nAccept: "))
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len += av_strlcpy(headers + len, "Accept: */*\r\n",
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sizeof(headers) - len);
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if (!has_header(s->headers, "\r\nRange: "))
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len += av_strlcatf(headers + len, sizeof(headers) - len,
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2010-06-08 13:06:36 +02:00
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"Range: bytes=%"PRId64"-\r\n", s->off);
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2010-06-08 12:26:16 +02:00
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if (!has_header(s->headers, "\r\nConnection: "))
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len += av_strlcpy(headers + len, "Connection: close\r\n",
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sizeof(headers)-len);
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if (!has_header(s->headers, "\r\nHost: "))
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len += av_strlcatf(headers + len, sizeof(headers) - len,
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"Host: %s\r\n", hoststr);
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/* now add in custom headers */
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av_strlcpy(headers+len, s->headers, sizeof(headers)-len);
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2007-02-28 04:40:23 +01:00
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snprintf(s->buffer, sizeof(s->buffer),
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"%s %s HTTP/1.1\r\n"
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2010-03-24 23:32:05 +01:00
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"%s"
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2010-06-08 12:26:16 +02:00
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"%s"
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2010-01-12 17:36:00 +01:00
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"%s"
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2007-02-28 04:40:23 +01:00
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"\r\n",
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post ? "POST" : "GET",
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path,
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2010-06-21 21:01:32 +02:00
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post && s->chunksize >= 0 ? "Transfer-Encoding: chunked\r\n" : "",
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2010-06-08 12:26:16 +02:00
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headers,
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authstr ? authstr : "");
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2007-02-28 04:40:23 +01:00
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2010-03-24 23:32:05 +01:00
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av_freep(&authstr);
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2011-03-31 16:48:01 +02:00
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if (ffurl_write(s->hd, s->buffer, strlen(s->buffer)) < 0)
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2007-07-19 17:23:32 +02:00
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return AVERROR(EIO);
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2007-02-28 04:40:23 +01:00
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/* init input buffer */
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s->buf_ptr = s->buffer;
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s->buf_end = s->buffer;
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s->line_count = 0;
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s->off = 0;
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2007-03-12 15:51:18 +01:00
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s->filesize = -1;
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2010-08-09 10:14:48 +02:00
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s->willclose = 0;
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2007-02-28 04:40:23 +01:00
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if (post) {
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2010-06-04 08:35:12 +02:00
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/* Pretend that it did work. We didn't read any header yet, since
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* we've still to send the POST data, but the code calling this
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* function will check http_code after we return. */
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s->http_code = 200;
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2007-02-28 04:40:23 +01:00
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return 0;
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}
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2010-06-21 21:01:32 +02:00
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s->chunksize = -1;
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2007-02-28 04:40:23 +01:00
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/* wait for header */
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for(;;) {
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2009-06-06 18:44:21 +02:00
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if (http_get_line(s, line, sizeof(line)) < 0)
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2007-07-19 17:23:32 +02:00
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return AVERROR(EIO);
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2009-06-06 19:32:59 +02:00
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2011-01-29 17:46:18 +01:00
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av_dlog(NULL, "header='%s'\n", line);
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2009-06-06 19:32:59 +02:00
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2009-06-06 18:46:40 +02:00
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err = process_line(h, line, s->line_count, new_location);
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if (err < 0)
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return err;
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if (err == 0)
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break;
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s->line_count++;
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2007-02-28 04:40:23 +01:00
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}
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return (off == s->off) ? 0 : -1;
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}
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static int http_read(URLContext *h, uint8_t *buf, int size)
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{
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HTTPContext *s = h->priv_data;
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int len;
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2009-06-23 17:38:53 +02:00
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if (s->chunksize >= 0) {
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if (!s->chunksize) {
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char line[32];
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for(;;) {
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do {
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if (http_get_line(s, line, sizeof(line)) < 0)
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return AVERROR(EIO);
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} while (!*line); /* skip CR LF from last chunk */
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s->chunksize = strtoll(line, NULL, 16);
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2011-01-29 17:46:18 +01:00
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av_dlog(NULL, "Chunked encoding data size: %"PRId64"'\n", s->chunksize);
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2009-06-23 17:38:53 +02:00
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if (!s->chunksize)
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return 0;
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break;
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}
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}
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size = FFMIN(size, s->chunksize);
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}
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2007-02-28 04:40:23 +01:00
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/* read bytes from input buffer first */
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len = s->buf_end - s->buf_ptr;
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if (len > 0) {
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if (len > size)
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len = size;
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memcpy(buf, s->buf_ptr, len);
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s->buf_ptr += len;
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} else {
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2010-08-09 10:14:48 +02:00
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if (!s->willclose && s->filesize >= 0 && s->off >= s->filesize)
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return AVERROR_EOF;
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2011-03-31 16:31:43 +02:00
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len = ffurl_read(s->hd, buf, size);
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2007-02-28 04:40:23 +01:00
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}
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2009-06-23 17:38:53 +02:00
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if (len > 0) {
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2007-02-28 04:40:23 +01:00
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s->off += len;
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2009-06-23 17:38:53 +02:00
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if (s->chunksize > 0)
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s->chunksize -= len;
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}
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2007-02-28 04:40:23 +01:00
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return len;
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}
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/* used only when posting data */
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2010-06-01 09:46:23 +02:00
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static int http_write(URLContext *h, const uint8_t *buf, int size)
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2007-02-28 04:40:23 +01:00
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{
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2010-06-08 13:48:03 +02:00
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char temp[11] = ""; /* 32-bit hex + CRLF + nul */
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2010-01-12 17:36:00 +01:00
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int ret;
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char crlf[] = "\r\n";
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2007-02-28 04:40:23 +01:00
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HTTPContext *s = h->priv_data;
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2010-01-12 17:36:00 +01:00
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if (s->chunksize == -1) {
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2010-06-21 20:40:53 +02:00
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/* non-chunked data is sent without any special encoding */
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2011-03-31 16:48:01 +02:00
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return ffurl_write(s->hd, buf, size);
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2010-01-12 17:36:00 +01:00
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}
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/* silently ignore zero-size data since chunk encoding that would
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* signal EOF */
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if (size > 0) {
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/* upload data using chunked encoding */
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2010-06-21 21:02:35 +02:00
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snprintf(temp, sizeof(temp), "%x\r\n", size);
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2010-06-08 13:48:03 +02:00
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2011-03-31 16:48:01 +02:00
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if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
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(ret = ffurl_write(s->hd, buf, size)) < 0 ||
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(ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
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2010-01-12 17:36:00 +01:00
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return ret;
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}
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return size;
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2007-02-28 04:40:23 +01:00
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}
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static int http_close(URLContext *h)
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{
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2010-01-12 17:36:00 +01:00
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int ret = 0;
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char footer[] = "0\r\n\r\n";
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2007-02-28 04:40:23 +01:00
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HTTPContext *s = h->priv_data;
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2010-01-12 17:36:00 +01:00
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/* signal end of chunked encoding if used */
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2011-04-15 16:42:09 +02:00
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if ((h->flags & AVIO_FLAG_WRITE) && s->chunksize != -1) {
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2011-03-31 16:48:01 +02:00
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ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
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2010-01-12 17:36:00 +01:00
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ret = ret > 0 ? 0 : ret;
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}
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2010-06-08 13:18:22 +02:00
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if (s->hd)
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2011-03-31 17:36:06 +02:00
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ffurl_close(s->hd);
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2010-01-12 17:36:00 +01:00
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return ret;
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2007-02-28 04:40:23 +01:00
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}
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2008-10-03 12:16:29 +02:00
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static int64_t http_seek(URLContext *h, int64_t off, int whence)
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2007-02-28 04:40:23 +01:00
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{
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HTTPContext *s = h->priv_data;
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URLContext *old_hd = s->hd;
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2008-10-03 12:16:29 +02:00
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int64_t old_off = s->off;
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2010-01-14 00:27:52 +01:00
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uint8_t old_buf[BUFFER_SIZE];
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int old_buf_size;
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2007-02-28 04:40:23 +01:00
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if (whence == AVSEEK_SIZE)
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return s->filesize;
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else if ((s->filesize == -1 && whence == SEEK_END) || h->is_streamed)
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return -1;
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/* we save the old context in case the seek fails */
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2010-01-14 00:27:52 +01:00
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old_buf_size = s->buf_end - s->buf_ptr;
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memcpy(old_buf, s->buf_ptr, old_buf_size);
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2007-02-28 04:40:23 +01:00
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s->hd = NULL;
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if (whence == SEEK_CUR)
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off += s->off;
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else if (whence == SEEK_END)
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off += s->filesize;
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s->off = off;
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/* if it fails, continue on old connection */
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if (http_open_cnx(h) < 0) {
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2010-01-14 00:27:52 +01:00
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memcpy(s->buffer, old_buf, old_buf_size);
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s->buf_ptr = s->buffer;
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s->buf_end = s->buffer + old_buf_size;
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2007-02-28 04:40:23 +01:00
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s->hd = old_hd;
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s->off = old_off;
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return -1;
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}
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2011-03-31 17:36:06 +02:00
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ffurl_close(old_hd);
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2007-02-28 04:40:23 +01:00
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return off;
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}
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2009-03-03 18:04:51 +01:00
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static int
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http_get_file_handle(URLContext *h)
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{
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HTTPContext *s = h->priv_data;
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2011-03-31 17:51:24 +02:00
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return ffurl_get_file_handle(s->hd);
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2009-03-03 18:04:51 +01:00
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}
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2011-01-25 23:03:28 +01:00
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URLProtocol ff_http_protocol = {
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2011-04-08 07:41:47 +02:00
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.name = "http",
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.url_open = http_open,
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.url_read = http_read,
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.url_write = http_write,
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.url_seek = http_seek,
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.url_close = http_close,
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2009-03-03 18:04:51 +01:00
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.url_get_file_handle = http_get_file_handle,
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2011-04-08 07:41:47 +02:00
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.priv_data_size = sizeof(HTTPContext),
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.priv_data_class = &httpcontext_class,
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2007-02-28 04:40:23 +01:00
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};
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