558b86a5 |
/*
* HTTP protocol for ffmpeg client |
406792e7 |
* Copyright (c) 2000, 2001 Fabrice Bellard |
558b86a5 |
*
* 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
*/ |
245976da |
|
ce2e858f |
#include "config.h"
#if CONFIG_ZLIB
#include <zlib.h>
#endif /* CONFIG_ZLIB */
|
3240e69d |
#include "libavutil/avassert.h" |
245976da |
#include "libavutil/avstring.h" |
ce2e858f |
#include "libavutil/opt.h"
|
558b86a5 |
#include "avformat.h" |
ce2e858f |
#include "http.h"
#include "httpauth.h" |
e4a9e3cc |
#include "internal.h" |
558b86a5 |
#include "network.h" |
a5e979f4 |
#include "os_support.h" |
0589da0a |
#include "url.h" |
6bab3430 |
|
e42dba48 |
/* XXX: POST protocol is not completely implemented because ffmpeg uses |
ce2e858f |
* only a subset of it. */ |
558b86a5 |
|
8bd324e9 |
/* The IO buffer size is unrelated to the max URL size in itself, but needs
* to be large enough to fit the full request headers (including long |
ce2e858f |
* path names). */
#define BUFFER_SIZE MAX_URL_SIZE |
558b86a5 |
#define MAX_REDIRECTS 8 |
3240e69d |
#define HTTP_SINGLE 1
#define HTTP_MUTLI 2
typedef enum {
LOWER_PROTO,
READ_HEADERS,
WRITE_REPLY_HEADERS,
FINISH
}HandshakeState; |
558b86a5 |
|
daf8cf35 |
typedef struct HTTPContext { |
4167ba0b |
const AVClass *class; |
558b86a5 |
URLContext *hd;
unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
int line_count;
int http_code; |
78b21c1d |
/* Used if "Transfer-Encoding: chunked" otherwise -1. */
int64_t chunksize; |
2ec33d27 |
int64_t off, end_off, filesize; |
be4edda6 |
char *location; |
9405f733 |
HTTPAuthState auth_state; |
b911518d |
HTTPAuthState proxy_auth_state; |
10da1e91 |
char *headers; |
e58c85b0 |
char *mime_type; |
ddfc9890 |
char *user_agent; |
2572d07c |
char *content_type; |
78b21c1d |
/* Set if the server correctly handles Connection: close and will close
* the connection after feeding us the content. */
int willclose; |
dd1e6b2a |
int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */ |
6149485f |
int chunked_post; |
78b21c1d |
/* A flag which indicates if the end of chunked encoding has been sent. */
int end_chunked_post;
/* A flag which indicates we have finished to read POST reply. */
int end_header;
/* A flag which indicates if we use persistent connections. */
int multiple_requests; |
1876e7c0 |
uint8_t *post_data;
int post_datalen; |
7803a040 |
int is_akamai; |
3220a894 |
int is_mediagateway; |
0b80a121 |
char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name) |
c59654d6 |
/* A dictionary containing cookies keyed by cookie name */
AVDictionary *cookie_dict; |
a92fbe16 |
int icy; |
8075c3d8 |
/* how much data was read since the last ICY metadata packet */
int icy_data_read;
/* after how many bytes of read data a new metadata packet will be found */
int icy_metaint; |
a92fbe16 |
char *icy_metadata_headers;
char *icy_metadata_packet; |
7601f941 |
AVDictionary *metadata; |
6bab3430 |
#if CONFIG_ZLIB
int compressed;
z_stream inflate_stream;
uint8_t *inflate_buffer; |
ce2e858f |
#endif /* CONFIG_ZLIB */ |
5c53bf7a |
AVDictionary *chained_options; |
71549a85 |
int send_expect_100; |
28df1d24 |
char *method; |
3f375950 |
int reconnect; |
4a58d757 |
int listen; |
3240e69d |
char *resource;
int reply_code;
int is_multi_client;
HandshakeState handshake_step;
int is_connected_server; |
558b86a5 |
} HTTPContext;
|
4167ba0b |
#define OFFSET(x) offsetof(HTTPContext, x) |
a2519280 |
#define D AV_OPT_FLAG_DECODING_PARAM
#define E AV_OPT_FLAG_ENCODING_PARAM |
de12b454 |
#define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION) |
ce2e858f |
|
4167ba0b |
static const AVOption options[] = { |
8b59ab1a |
{ "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, D }, |
ce2e858f |
{ "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
{ "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
{ "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D }, |
8b59ab1a |
{ "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D }, |
ce2e858f |
{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D | E },
{ "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
{ "mime_type", "export the MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, |
8b59ab1a |
{ "cookies", "set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax", OFFSET(cookies), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D }, |
7e38903b |
{ "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, D }, |
ce2e858f |
{ "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT },
{ "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT }, |
7601f941 |
{ "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT }, |
ce2e858f |
{ "auth_type", "HTTP authentication type", OFFSET(auth_state.auth_type), AV_OPT_TYPE_INT, { .i64 = HTTP_AUTH_NONE }, HTTP_AUTH_NONE, HTTP_AUTH_BASIC, D | E, "auth_type"},
{ "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"},
{ "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"},
{ "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E },
{ "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
{ "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
{ "end_offset", "try to limit the request to bytes preceding this offset", OFFSET(end_off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D }, |
aa74401a |
{ "method", "Override the HTTP method or set the expected HTTP method from a client", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E }, |
3f375950 |
{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D }, |
3240e69d |
{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
{ "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
{ "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E}, |
ce2e858f |
{ NULL } |
4167ba0b |
}; |
3b384502 |
|
b911518d |
static int http_connect(URLContext *h, const char *path, const char *local_path,
const char *hoststr, const char *auth,
const char *proxyauth, int *new_location); |
b51027fd |
static int http_read_header(URLContext *h, int *new_location); |
558b86a5 |
|
db302347 |
void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
{ |
ce2e858f |
memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
&((HTTPContext *)src->priv_data)->auth_state,
sizeof(HTTPAuthState));
memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
&((HTTPContext *)src->priv_data)->proxy_auth_state, |
b911518d |
sizeof(HTTPAuthState)); |
db302347 |
}
|
6a463e7f |
static int http_open_cnx_internal(URLContext *h, AVDictionary **options) |
558b86a5 |
{ |
b911518d |
const char *path, *proxy_path, *lower_proto = "tcp", *local_path; |
183baead |
char hostname[1024], hoststr[1024], proto[10]; |
abe20c59 |
char auth[1024], proxyauth[1024] = ""; |
8bd324e9 |
char path1[MAX_URL_SIZE];
char buf[1024], urlbuf[MAX_URL_SIZE]; |
6a463e7f |
int port, use_proxy, err, location_changed = 0; |
558b86a5 |
HTTPContext *s = h->priv_data;
|
183baead |
av_url_split(proto, sizeof(proto), auth, sizeof(auth),
hostname, sizeof(hostname), &port, |
f984dcf6 |
path1, sizeof(path1), s->location); |
57b5555c |
ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL); |
558b86a5 |
|
de9cd1b1 |
proxy_path = getenv("http_proxy"); |
ce2e858f |
use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), hostname) && |
4b1f5e50 |
proxy_path && av_strstart(proxy_path, "http://", NULL); |
de9cd1b1 |
|
f5c5d57b |
if (!strcmp(proto, "https")) {
lower_proto = "tls"; |
ce2e858f |
use_proxy = 0; |
f5c5d57b |
if (port < 0)
port = 443;
}
if (port < 0)
port = 80;
|
b911518d |
if (path1[0] == '\0')
path = "/";
else
path = path1;
local_path = path; |
558b86a5 |
if (use_proxy) { |
b911518d |
/* Reassemble the request URL without auth string - we don't
* want to leak the auth to the proxy. */
ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
path1);
path = urlbuf;
av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
hostname, sizeof(hostname), &port, NULL, 0, proxy_path); |
558b86a5 |
}
|
183baead |
ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL); |
558b86a5 |
|
e999b641 |
if (!s->hd) { |
59525641 |
err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE, |
5c53bf7a |
&h->interrupt_callback, options); |
e999b641 |
if (err < 0) |
6a463e7f |
return err; |
e999b641 |
}
|
6a463e7f |
err = http_connect(h, path, local_path, hoststr,
auth, proxyauth, &location_changed);
if (err < 0)
return err;
return location_changed;
}
/* return non zero if error */
static int http_open_cnx(URLContext *h, AVDictionary **options)
{
HTTPAuthType cur_auth_type, cur_proxy_auth_type;
HTTPContext *s = h->priv_data;
int location_changed, attempts = 0, redirects = 0;
redo: |
deccb4d8 |
av_dict_copy(options, s->chained_options, 0); |
ffaf2074 |
|
4e629ef8 |
cur_auth_type = s->auth_state.auth_type;
cur_proxy_auth_type = s->auth_state.auth_type;
|
6a463e7f |
location_changed = http_open_cnx_internal(h, options);
if (location_changed < 0) |
558b86a5 |
goto fail; |
6a463e7f |
|
e75bbcf4 |
attempts++; |
9405f733 |
if (s->http_code == 401) { |
e75bbcf4 |
if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) { |
fbc5e0fa |
ffurl_closep(&s->hd); |
9405f733 |
goto redo;
} else
goto fail;
} |
b911518d |
if (s->http_code == 407) { |
e75bbcf4 |
if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) { |
fbc5e0fa |
ffurl_closep(&s->hd); |
b911518d |
goto redo;
} else
goto fail;
} |
ce2e858f |
if ((s->http_code == 301 || s->http_code == 302 ||
s->http_code == 303 || s->http_code == 307) &&
location_changed == 1) { |
558b86a5 |
/* url moved, get next */ |
fbc5e0fa |
ffurl_closep(&s->hd); |
558b86a5 |
if (redirects++ >= MAX_REDIRECTS) |
6f3e0b21 |
return AVERROR(EIO); |
499ad54d |
/* Restart the authentication process with the new target, which
* might use a different auth mechanism. */
memset(&s->auth_state, 0, sizeof(s->auth_state)); |
ce2e858f |
attempts = 0; |
558b86a5 |
location_changed = 0;
goto redo;
}
return 0; |
ce2e858f |
fail: |
59525641 |
if (s->hd) |
fbc5e0fa |
ffurl_closep(&s->hd); |
70c9d400 |
if (location_changed < 0)
return location_changed; |
81ce3f8e |
return ff_http_averror(s->http_code, AVERROR(EIO)); |
558b86a5 |
}
|
e999b641 |
int ff_http_do_new_request(URLContext *h, const char *uri)
{
HTTPContext *s = h->priv_data; |
5c53bf7a |
AVDictionary *options = NULL;
int ret; |
e999b641 |
|
ce2e858f |
s->off = 0; |
a92fbe16 |
s->icy_data_read = 0; |
be4edda6 |
av_free(s->location);
s->location = av_strdup(uri);
if (!s->location)
return AVERROR(ENOMEM); |
e999b641 |
|
5c53bf7a |
ret = http_open_cnx(h, &options);
av_dict_free(&options);
return ret; |
e999b641 |
}
|
9d86ce78 |
int ff_http_averror(int status_code, int default_averror)
{
switch (status_code) {
case 400: return AVERROR_HTTP_BAD_REQUEST;
case 401: return AVERROR_HTTP_UNAUTHORIZED;
case 403: return AVERROR_HTTP_FORBIDDEN;
case 404: return AVERROR_HTTP_NOT_FOUND;
default: break;
}
if (status_code >= 400 && status_code <= 499)
return AVERROR_HTTP_OTHER_4XX;
else if (status_code >= 500)
return AVERROR_HTTP_SERVER_ERROR;
else
return default_averror;
}
|
3240e69d |
static int http_write_reply(URLContext* h, int status_code) |
8cfaa76a |
{ |
3240e69d |
int ret, body = 0, reply_code, message_len;
const char *reply_text, *content_type; |
8cfaa76a |
HTTPContext *s = h->priv_data; |
3240e69d |
char message[BUFFER_SIZE];
content_type = "text/plain";
if (status_code < 0)
body = 1;
switch (status_code) {
case AVERROR_HTTP_BAD_REQUEST:
case 400:
reply_code = 400;
reply_text = "Bad Request";
break;
case AVERROR_HTTP_FORBIDDEN:
case 403:
reply_code = 403;
reply_text = "Forbidden";
break;
case AVERROR_HTTP_NOT_FOUND:
case 404:
reply_code = 404;
reply_text = "Not Found";
break;
case 200:
reply_code = 200;
reply_text = "OK";
content_type = "application/octet-stream";
break;
case AVERROR_HTTP_SERVER_ERROR:
case 500:
reply_code = 500;
reply_text = "Internal server error";
break;
default:
return AVERROR(EINVAL);
}
if (body) {
s->chunked_post = 0;
message_len = snprintf(message, sizeof(message),
"HTTP/1.1 %03d %s\r\n"
"Content-Type: %s\r\n"
"Content-Length: %zu\r\n"
"\r\n"
"%03d %s\r\n",
reply_code,
reply_text,
content_type,
strlen(reply_text) + 6, // 3 digit status code + space + \r\n
reply_code,
reply_text);
} else {
s->chunked_post = 1;
message_len = snprintf(message, sizeof(message),
"HTTP/1.1 %03d %s\r\n"
"Content-Type: %s\r\n"
"Transfer-Encoding: chunked\r\n"
"\r\n",
reply_code,
reply_text,
content_type);
}
av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
return ret;
return 0;
}
static void handle_http_errors(URLContext *h, int error)
{
av_assert0(error < 0);
http_write_reply(h, error);
}
static int http_handshake(URLContext *c)
{
int ret, err, new_location;
HTTPContext *ch = c->priv_data;
URLContext *cl = ch->hd;
switch (ch->handshake_step) {
case LOWER_PROTO:
av_log(c, AV_LOG_TRACE, "Lower protocol\n"); |
dd7b486e |
if ((ret = ffurl_handshake(cl)) > 0) |
3240e69d |
return 2 + ret; |
280d140c |
if (ret < 0) |
3240e69d |
return ret;
ch->handshake_step = READ_HEADERS;
ch->is_connected_server = 1;
return 2;
case READ_HEADERS:
av_log(c, AV_LOG_TRACE, "Read headers\n");
if ((err = http_read_header(c, &new_location)) < 0) {
handle_http_errors(c, err);
return err; |
8cfaa76a |
} |
3240e69d |
ch->handshake_step = WRITE_REPLY_HEADERS;
return 1;
case WRITE_REPLY_HEADERS:
av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
if ((err = http_write_reply(c, ch->reply_code)) < 0)
return err;
ch->handshake_step = FINISH;
return 1;
case FINISH:
return 0; |
8cfaa76a |
} |
3240e69d |
// this should never be reached.
return AVERROR(EINVAL); |
8cfaa76a |
}
|
4a58d757 |
static int http_listen(URLContext *h, const char *uri, int flags,
AVDictionary **options) {
HTTPContext *s = h->priv_data;
int ret; |
71b69df6 |
char hostname[1024], proto[10]; |
4a58d757 |
char lower_url[100]; |
a649f36f |
const char *lower_proto = "tcp"; |
3240e69d |
int port; |
71b69df6 |
av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port, |
4a58d757 |
NULL, 0, uri); |
71b69df6 |
if (!strcmp(proto, "https"))
lower_proto = "tls";
ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port, |
4a58d757 |
NULL); |
3240e69d |
if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
goto fail; |
6d8c27f9 |
if ((ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
&h->interrupt_callback, options)) < 0) |
4a58d757 |
goto fail; |
3240e69d |
s->handshake_step = LOWER_PROTO;
if (s->listen == HTTP_SINGLE) { /* single client */
s->reply_code = 200;
while ((ret = http_handshake(h)) > 0);
} |
4a58d757 |
fail:
av_dict_free(&s->chained_options);
return ret;
}
|
5c53bf7a |
static int http_open(URLContext *h, const char *uri, int flags,
AVDictionary **options) |
558b86a5 |
{ |
a9a3364c |
HTTPContext *s = h->priv_data; |
5c53bf7a |
int ret; |
558b86a5 |
|
dd1e6b2a |
if( s->seekable == 1 )
h->is_streamed = 0;
else
h->is_streamed = 1; |
558b86a5 |
s->filesize = -1; |
be4edda6 |
s->location = av_strdup(uri);
if (!s->location)
return AVERROR(ENOMEM); |
5c53bf7a |
if (options)
av_dict_copy(&s->chained_options, *options, 0); |
558b86a5 |
|
10da1e91 |
if (s->headers) {
int len = strlen(s->headers); |
5ae17853 |
if (len < 2 || strcmp("\r\n", s->headers + len - 2)) { |
ce2e858f |
av_log(h, AV_LOG_WARNING,
"No trailing CRLF found in HTTP header.\n"); |
5ae17853 |
ret = av_reallocp(&s->headers, len + 3);
if (ret < 0)
return ret;
s->headers[len] = '\r';
s->headers[len + 1] = '\n';
s->headers[len + 2] = '\0';
} |
10da1e91 |
}
|
4a58d757 |
if (s->listen) {
return http_listen(h, uri, flags, options);
} |
5c53bf7a |
ret = http_open_cnx(h, options);
if (ret < 0)
av_dict_free(&s->chained_options);
return ret; |
558b86a5 |
} |
ce2e858f |
|
3240e69d |
static int http_accept(URLContext *s, URLContext **c)
{
int ret;
HTTPContext *sc = s->priv_data;
HTTPContext *cc;
URLContext *sl = sc->hd;
URLContext *cl = NULL;
av_assert0(sc->listen);
if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
goto fail;
cc = (*c)->priv_data;
if ((ret = ffurl_accept(sl, &cl)) < 0)
goto fail;
cc->hd = cl;
cc->is_multi_client = 1;
fail:
return ret;
}
|
558b86a5 |
static int http_getc(HTTPContext *s)
{
int len;
if (s->buf_ptr >= s->buf_end) { |
bc371aca |
len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE); |
558b86a5 |
if (len < 0) { |
9613240f |
return len; |
558b86a5 |
} else if (len == 0) { |
55a215ba |
return AVERROR_EOF; |
558b86a5 |
} else {
s->buf_ptr = s->buffer;
s->buf_end = s->buffer + len;
}
}
return *s->buf_ptr++;
}
|
682d49f4 |
static int http_get_line(HTTPContext *s, char *line, int line_size)
{
int ch;
char *q;
q = line; |
ce2e858f |
for (;;) { |
682d49f4 |
ch = http_getc(s);
if (ch < 0) |
9613240f |
return ch; |
682d49f4 |
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;
}
}
}
|
4ff99ab3 |
static int check_http_code(URLContext *h, int http_code, const char *end)
{
HTTPContext *s = h->priv_data;
/* error codes are 4xx and 5xx, but regard 401 as a success, so we
* don't abort until all headers have been parsed. */
if (http_code >= 400 && http_code < 600 &&
(http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
(http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
end += strspn(end, SPACE_CHARS);
av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end); |
81ce3f8e |
return ff_http_averror(http_code, AVERROR(EIO)); |
4ff99ab3 |
}
return 0;
}
static int parse_location(HTTPContext *s, const char *p)
{
char redirected_location[MAX_URL_SIZE], *new_loc;
ff_make_absolute_url(redirected_location, sizeof(redirected_location),
s->location, p);
new_loc = av_strdup(redirected_location);
if (!new_loc)
return AVERROR(ENOMEM);
av_free(s->location);
s->location = new_loc;
return 0;
}
/* "bytes $from-$to/$document_size" */ |
e77a2ea9 |
static void parse_content_range(URLContext *h, const char *p) |
4ff99ab3 |
{
HTTPContext *s = h->priv_data;
const char *slash;
if (!strncmp(p, "bytes ", 6)) { |
ce2e858f |
p += 6; |
4ff99ab3 |
s->off = strtoll(p, NULL, 10);
if ((slash = strchr(p, '/')) && strlen(slash) > 0) |
ce2e858f |
s->filesize = strtoll(slash + 1, NULL, 10); |
4ff99ab3 |
} |
21d4c571 |
if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
h->is_streamed = 0; /* we _can_ in fact seek */ |
4ff99ab3 |
}
|
e77a2ea9 |
static int parse_content_encoding(URLContext *h, const char *p) |
4ff99ab3 |
{
if (!av_strncasecmp(p, "gzip", 4) ||
!av_strncasecmp(p, "deflate", 7)) {
#if CONFIG_ZLIB |
7ccb847f |
HTTPContext *s = h->priv_data;
|
4ff99ab3 |
s->compressed = 1;
inflateEnd(&s->inflate_stream);
if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
s->inflate_stream.msg);
return AVERROR(ENOSYS);
}
if (zlibCompileFlags() & (1 << 17)) {
av_log(h, AV_LOG_WARNING,
"Your zlib was compiled without gzip support.\n");
return AVERROR(ENOSYS);
}
#else
av_log(h, AV_LOG_WARNING,
"Compressed (%s) content, need zlib with gzip support\n", p);
return AVERROR(ENOSYS); |
ce2e858f |
#endif /* CONFIG_ZLIB */ |
4ff99ab3 |
} else if (!av_strncasecmp(p, "identity", 8)) {
// The normal, no-encoding case (although servers shouldn't include
// the header at all if this is the case).
} else {
av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
}
return 0;
}
|
8075c3d8 |
// Concat all Icy- header lines
static int parse_icy(HTTPContext *s, const char *tag, const char *p)
{
int len = 4 + strlen(p) + strlen(tag); |
6998a9f4 |
int is_first = !s->icy_metadata_headers; |
8075c3d8 |
int ret;
|
7601f941 |
av_dict_set(&s->metadata, tag, p, 0);
|
8075c3d8 |
if (s->icy_metadata_headers)
len += strlen(s->icy_metadata_headers);
if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
return ret;
|
6998a9f4 |
if (is_first)
*s->icy_metadata_headers = '\0';
|
8075c3d8 |
av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
return 0;
}
|
c59654d6 |
static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
{
char *eql, *name;
// duplicate the cookie name (dict will dupe the value)
if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
// add the cookie to the dictionary
av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
return 0;
}
static int cookie_string(AVDictionary *dict, char **cookies)
{
AVDictionaryEntry *e = NULL;
int len = 1;
// determine how much memory is needed for the cookies string
while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
len += strlen(e->key) + strlen(e->value) + 1;
// reallocate the cookies
e = NULL;
if (*cookies) av_free(*cookies);
*cookies = av_malloc(len); |
919d13d2 |
if (!*cookies) return AVERROR(ENOMEM); |
c59654d6 |
*cookies[0] = '\0';
// write out the cookies
while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
return 0;
}
|
558b86a5 |
static int process_line(URLContext *h, char *line, int line_count,
int *new_location)
{
HTTPContext *s = h->priv_data; |
44d19212 |
const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET"; |
a7e7c68b |
char *tag, *p, *end, *method, *resource, *version; |
4ff99ab3 |
int ret; |
558b86a5 |
/* end of header */ |
e5773d8b |
if (line[0] == '\0') {
s->end_header = 1; |
558b86a5 |
return 0; |
e5773d8b |
} |
558b86a5 |
p = line;
if (line_count == 0) { |
3240e69d |
if (s->is_connected_server) { |
a7e7c68b |
// HTTP method
method = p; |
4f860848 |
while (*p && !av_isspace(*p)) |
a7e7c68b |
p++;
*(p++) = '\0';
av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
if (s->method) {
if (av_strcasecmp(s->method, method)) {
av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
s->method, method);
return ff_http_averror(400, AVERROR(EIO));
} |
44d19212 |
} else {
// use autodetected HTTP method to expect
av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
if (av_strcasecmp(auto_method, method)) {
av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
"(%s autodetected %s received)\n", auto_method, method);
return ff_http_averror(400, AVERROR(EIO));
} |
3240e69d |
if (!(s->method = av_strdup(method)))
return AVERROR(ENOMEM); |
a7e7c68b |
}
// HTTP resource
while (av_isspace(*p))
p++;
resource = p;
while (!av_isspace(*p))
p++;
*(p++) = '\0';
av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource); |
3240e69d |
if (!(s->resource = av_strdup(resource)))
return AVERROR(ENOMEM); |
a7e7c68b |
// HTTP version
while (av_isspace(*p))
p++;
version = p; |
4f860848 |
while (*p && !av_isspace(*p)) |
a7e7c68b |
p++;
*p = '\0';
if (av_strncasecmp(version, "HTTP/", 5)) {
av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
return ff_http_averror(400, AVERROR(EIO));
}
av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
} else { |
290b2375 |
while (!av_isspace(*p) && *p != '\0')
p++;
while (av_isspace(*p))
p++;
s->http_code = strtol(p, &end, 10); |
a52dc730 |
|
290b2375 |
av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code); |
a52dc730 |
|
290b2375 |
if ((ret = check_http_code(h, s->http_code, end)) < 0)
return ret; |
a7e7c68b |
} |
558b86a5 |
} else {
while (*p != '\0' && *p != ':')
p++;
if (*p != ':')
return 1;
|
ce2e858f |
*p = '\0'; |
558b86a5 |
tag = line;
p++; |
88d55b82 |
while (av_isspace(*p)) |
558b86a5 |
p++; |
96949daf |
if (!av_strcasecmp(tag, "Location")) { |
4ff99ab3 |
if ((ret = parse_location(s, p)) < 0)
return ret; |
558b86a5 |
*new_location = 1; |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Content-Length") && s->filesize == -1) { |
51a2b554 |
s->filesize = strtoll(p, NULL, 10); |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Content-Range")) { |
4ff99ab3 |
parse_content_range(h, p); |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Accept-Ranges") && |
df41cbee |
!strncmp(p, "bytes", 5) &&
s->seekable == -1) { |
31dfc495 |
h->is_streamed = 0; |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
!av_strncasecmp(p, "chunked", 7)) { |
ce2e858f |
s->filesize = -1; |
7995ed8e |
s->chunksize = 0; |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "WWW-Authenticate")) { |
9405f733 |
ff_http_auth_handle_header(&s->auth_state, tag, p); |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Authentication-Info")) { |
9405f733 |
ff_http_auth_handle_header(&s->auth_state, tag, p); |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Proxy-Authenticate")) { |
b911518d |
ff_http_auth_handle_header(&s->proxy_auth_state, tag, p); |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Connection")) { |
f240ed18 |
if (!strcmp(p, "close"))
s->willclose = 1; |
8b59ab1a |
} else if (!av_strcasecmp(tag, "Server")) {
if (!av_strcasecmp(p, "AkamaiGHost")) { |
3220a894 |
s->is_akamai = 1; |
8b59ab1a |
} else if (!av_strncasecmp(p, "MediaGateway", 12)) { |
3220a894 |
s->is_mediagateway = 1;
} |
ce2e858f |
} else if (!av_strcasecmp(tag, "Content-Type")) { |
e58c85b0 |
av_free(s->mime_type);
s->mime_type = av_strdup(p); |
8b59ab1a |
} else if (!av_strcasecmp(tag, "Set-Cookie")) { |
c59654d6 |
if (parse_cookie(s, p, &s->cookie_dict))
av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p); |
ce2e858f |
} else if (!av_strcasecmp(tag, "Icy-MetaInt")) { |
a92fbe16 |
s->icy_metaint = strtoll(p, NULL, 10);
} else if (!av_strncasecmp(tag, "Icy-", 4)) { |
8075c3d8 |
if ((ret = parse_icy(s, tag, p)) < 0)
return ret; |
7a2fddb4 |
} else if (!av_strcasecmp(tag, "Content-Encoding")) { |
4ff99ab3 |
if ((ret = parse_content_encoding(h, p)) < 0)
return ret; |
558b86a5 |
}
}
return 1;
}
|
0b80a121 |
/**
* Create a string containing cookie values for use as a HTTP cookie header
* field value for a particular path and domain from the cookie values stored in
* the HTTP protocol context. The cookie string is stored in *cookies.
*
* @return a negative value if an error condition occurred, 0 otherwise
*/
static int get_cookies(HTTPContext *s, char **cookies, const char *path,
const char *domain)
{
// cookie strings will look like Set-Cookie header field values. Multiple
// Set-Cookie fields will result in multiple values delimited by a newline
int ret = 0;
char *next, *cookie, *set_cookies = av_strdup(s->cookies), *cset_cookies = set_cookies;
if (!set_cookies) return AVERROR(EINVAL);
|
c59654d6 |
// destroy any cookies in the dictionary.
av_dict_free(&s->cookie_dict);
|
0b80a121 |
*cookies = NULL;
while ((cookie = av_strtok(set_cookies, "\n", &next))) {
int domain_offset = 0;
char *param, *next_param, *cdomain = NULL, *cpath = NULL, *cvalue = NULL;
set_cookies = NULL;
|
c59654d6 |
// store the cookie in a dict in case it is updated in the response
if (parse_cookie(s, cookie, &s->cookie_dict))
av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
|
0b80a121 |
while ((param = av_strtok(cookie, "; ", &next_param))) { |
481cbc5a |
if (cookie) {
// first key-value pair is the actual cookie value
cvalue = av_strdup(param);
cookie = NULL;
} else if (!av_strncasecmp("path=", param, 5)) { |
c8ea5ccd |
av_free(cpath); |
0b80a121 |
cpath = av_strdup(¶m[5]);
} else if (!av_strncasecmp("domain=", param, 7)) { |
da25a657 |
// if the cookie specifies a sub-domain, skip the leading dot thereby
// supporting URLs that point to sub-domains and the master domain
int leading_dot = (param[7] == '.'); |
c8ea5ccd |
av_free(cdomain); |
da25a657 |
cdomain = av_strdup(¶m[7+leading_dot]); |
0b80a121 |
} else { |
481cbc5a |
// ignore unknown attributes |
0b80a121 |
}
} |
e9df8f77 |
if (!cdomain)
cdomain = av_strdup(domain); |
0b80a121 |
// ensure all of the necessary values are valid
if (!cdomain || !cpath || !cvalue) {
av_log(s, AV_LOG_WARNING,
"Invalid cookie found, no value, path or domain specified\n");
goto done_cookie;
}
// check if the request path matches the cookie path
if (av_strncasecmp(path, cpath, strlen(cpath)))
goto done_cookie;
// the domain should be at least the size of our cookie domain
domain_offset = strlen(domain) - strlen(cdomain);
if (domain_offset < 0)
goto done_cookie;
// match the cookie domain
if (av_strcasecmp(&domain[domain_offset], cdomain))
goto done_cookie;
// cookie parameters match, so copy the value
if (!*cookies) {
if (!(*cookies = av_strdup(cvalue))) {
ret = AVERROR(ENOMEM);
goto done_cookie;
}
} else {
char *tmp = *cookies;
size_t str_size = strlen(cvalue) + strlen(*cookies) + 3;
if (!(*cookies = av_malloc(str_size))) {
ret = AVERROR(ENOMEM);
goto done_cookie;
}
snprintf(*cookies, str_size, "%s; %s", tmp, cvalue);
av_free(tmp);
}
done_cookie: |
bcd44471 |
av_freep(&cdomain);
av_freep(&cpath);
av_freep(&cvalue); |
0b80a121 |
if (ret < 0) {
if (*cookies) av_freep(cookies);
av_free(cset_cookies);
return ret;
}
}
av_free(cset_cookies);
return 0;
}
|
6964d510 |
static inline int has_header(const char *str, const char *header)
{
/* header + 2 to skip over CRLF prefix. (make sure you have one!) */ |
10da1e91 |
if (!str)
return 0; |
6964d510 |
return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
}
|
5d603f1b |
static int http_read_header(URLContext *h, int *new_location)
{
HTTPContext *s = h->priv_data; |
8bd324e9 |
char line[MAX_URL_SIZE]; |
5d603f1b |
int err = 0;
|
35127bf1 |
s->chunksize = -1;
|
5d603f1b |
for (;;) { |
9613240f |
if ((err = http_get_line(s, line, sizeof(line))) < 0)
return err; |
5d603f1b |
|
40d552da |
av_log(h, AV_LOG_TRACE, "header='%s'\n", line); |
5d603f1b |
err = process_line(h, line, s->line_count, new_location);
if (err < 0)
return err;
if (err == 0)
break;
s->line_count++;
}
|
3220a894 |
if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
h->is_streamed = 1; /* we can in fact _not_ seek */
|
c59654d6 |
// add any new cookies into the existing cookie string
cookie_string(s->cookie_dict, &s->cookies);
av_dict_free(&s->cookie_dict);
|
5d603f1b |
return err;
}
|
b911518d |
static int http_connect(URLContext *h, const char *path, const char *local_path,
const char *hoststr, const char *auth,
const char *proxyauth, int *new_location) |
558b86a5 |
{
HTTPContext *s = h->priv_data; |
682d49f4 |
int post, err; |
7bdd2ff6 |
char headers[HTTP_HEADERS_SIZE] = ""; |
b911518d |
char *authstr = NULL, *proxyauthstr = NULL; |
bc5c918e |
int64_t off = s->off; |
6964d510 |
int len = 0; |
b911518d |
const char *method; |
71549a85 |
int send_expect_100 = 0; |
558b86a5 |
/* send http header */ |
59d96941 |
post = h->flags & AVIO_FLAG_WRITE; |
1876e7c0 |
if (s->post_data) {
/* force POST method and disable chunked encoding when
* custom HTTP post data is set */ |
ce2e858f |
post = 1; |
1876e7c0 |
s->chunked_post = 0;
}
|
28df1d24 |
if (s->method)
method = s->method;
else
method = post ? "POST" : "GET";
|
ce2e858f |
authstr = ff_http_auth_create_response(&s->auth_state, auth,
local_path, method); |
b911518d |
proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
local_path, method); |
71549a85 |
if (post && !s->post_data) {
send_expect_100 = s->send_expect_100;
/* The user has supplied authentication but we don't know the auth type,
* send Expect: 100-continue to get the 401 response including the
* WWW-Authenticate header, or an 100 continue if no auth actually
* is needed. */ |
708b32b6 |
if (auth && *auth &&
s->auth_state.auth_type == HTTP_AUTH_NONE && |
71549a85 |
s->http_code != 401)
send_expect_100 = 1;
} |
6964d510 |
/* set default headers if needed */
if (!has_header(s->headers, "\r\nUser-Agent: ")) |
2bb1c713 |
len += av_strlcatf(headers + len, sizeof(headers) - len, |
1fabd950 |
"User-Agent: %s\r\n", s->user_agent); |
6964d510 |
if (!has_header(s->headers, "\r\nAccept: "))
len += av_strlcpy(headers + len, "Accept: */*\r\n",
sizeof(headers) - len); |
8a33210d |
// Note: we send this on purpose even when s->off is 0 when we're probing, |
033f53fb |
// since it allows us to detect more reliably if a (non-conforming)
// server supports seeking by analysing the reply headers. |
76a939d0 |
if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) { |
6964d510 |
len += av_strlcatf(headers + len, sizeof(headers) - len, |
d52882fa |
"Range: bytes=%"PRId64"-", s->off); |
2ec33d27 |
if (s->end_off) |
d52882fa |
len += av_strlcatf(headers + len, sizeof(headers) - len, |
2ec33d27 |
"%"PRId64, s->end_off - 1); |
d52882fa |
len += av_strlcpy(headers + len, "\r\n",
sizeof(headers) - len);
} |
71549a85 |
if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Expect: 100-continue\r\n"); |
3bdb438e |
if (!has_header(s->headers, "\r\nConnection: ")) { |
ce2e858f |
if (s->multiple_requests) |
3bdb438e |
len += av_strlcpy(headers + len, "Connection: keep-alive\r\n",
sizeof(headers) - len); |
ce2e858f |
else |
3bdb438e |
len += av_strlcpy(headers + len, "Connection: close\r\n",
sizeof(headers) - len);
}
|
6964d510 |
if (!has_header(s->headers, "\r\nHost: "))
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Host: %s\r\n", hoststr); |
1876e7c0 |
if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Content-Length: %d\r\n", s->post_datalen); |
2572d07c |
|
c01d1d4d |
if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Content-Type: %s\r\n", s->content_type); |
0b80a121 |
if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
char *cookies = NULL; |
76c8fbc5 |
if (!get_cookies(s, &cookies, path, hoststr) && cookies) { |
0b80a121 |
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Cookie: %s\r\n", cookies);
av_free(cookies);
}
} |
ce2e858f |
if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy) |
a92fbe16 |
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Icy-MetaData: %d\r\n", 1); |
6964d510 |
/* now add in custom headers */ |
10da1e91 |
if (s->headers)
av_strlcpy(headers + len, s->headers, sizeof(headers) - len); |
6964d510 |
|
558b86a5 |
snprintf(s->buffer, sizeof(s->buffer),
"%s %s HTTP/1.1\r\n" |
9405f733 |
"%s" |
6964d510 |
"%s" |
08f7a8ac |
"%s" |
b911518d |
"%s%s" |
558b86a5 |
"\r\n", |
b911518d |
method, |
558b86a5 |
path, |
6149485f |
post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "", |
6964d510 |
headers, |
b911518d |
authstr ? authstr : "",
proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : ""); |
558b86a5 |
|
04047b61 |
av_log(h, AV_LOG_DEBUG, "request: %s\n", s->buffer);
|
9613240f |
if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0) |
686e6626 |
goto done; |
558b86a5 |
|
1876e7c0 |
if (s->post_data)
if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0) |
686e6626 |
goto done; |
558b86a5 |
/* init input buffer */ |
ce2e858f |
s->buf_ptr = s->buffer;
s->buf_end = s->buffer;
s->line_count = 0;
s->off = 0;
s->icy_data_read = 0;
s->filesize = -1;
s->willclose = 0; |
ba354a8c |
s->end_chunked_post = 0; |
ce2e858f |
s->end_header = 0; |
71549a85 |
if (post && !s->post_data && !send_expect_100) { |
dd798dcd |
/* Pretend that it did work. We didn't read any header yet, since
* we've still to send the POST data, but the code calling this
* function will check http_code after we return. */
s->http_code = 200; |
686e6626 |
err = 0;
goto done; |
558b86a5 |
}
/* wait for header */ |
5d603f1b |
err = http_read_header(h, new_location);
if (err < 0) |
686e6626 |
goto done; |
558b86a5 |
|
a4d58c97 |
if (*new_location)
s->off = off;
|
686e6626 |
err = (off == s->off) ? 0 : -1;
done:
av_freep(&authstr);
av_freep(&proxyauthstr);
return err; |
558b86a5 |
}
|
bf7723a6 |
static int http_buf_read(URLContext *h, uint8_t *buf, int size) |
558b86a5 |
{
HTTPContext *s = h->priv_data;
int len; |
bf7723a6 |
/* read bytes from input buffer first */
len = s->buf_end - s->buf_ptr;
if (len > 0) {
if (len > size)
len = size;
memcpy(buf, s->buf_ptr, len);
s->buf_ptr += len;
} else { |
8bf3bf69 |
if ((!s->willclose || s->chunksize < 0) &&
s->filesize >= 0 && s->off >= s->filesize) |
bf7723a6 |
return AVERROR_EOF;
len = ffurl_read(s->hd, buf, size); |
3668701f |
if (!len && (!s->willclose || s->chunksize < 0) &&
s->filesize >= 0 && s->off < s->filesize) {
av_log(h, AV_LOG_ERROR, |
22c0585a |
"Stream ends prematurely at %"PRId64", should be %"PRId64"\n", |
3668701f |
s->off, s->filesize
);
return AVERROR(EIO);
} |
bf7723a6 |
}
if (len > 0) {
s->off += len;
if (s->chunksize > 0)
s->chunksize -= len;
}
return len;
}
|
6bab3430 |
#if CONFIG_ZLIB
#define DECOMPRESS_BUF_SIZE (256 * 1024)
static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
{
HTTPContext *s = h->priv_data;
int ret;
if (!s->inflate_buffer) {
s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
if (!s->inflate_buffer)
return AVERROR(ENOMEM);
}
if (s->inflate_stream.avail_in == 0) {
int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
if (read <= 0)
return read;
s->inflate_stream.next_in = s->inflate_buffer;
s->inflate_stream.avail_in = read;
}
s->inflate_stream.avail_out = size;
s->inflate_stream.next_out = buf;
ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
if (ret != Z_OK && ret != Z_STREAM_END) |
ce2e858f |
av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
ret, s->inflate_stream.msg); |
6bab3430 |
return size - s->inflate_stream.avail_out;
} |
ce2e858f |
#endif /* CONFIG_ZLIB */ |
6bab3430 |
|
3f375950 |
static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
|
636273d3 |
static int http_read_stream(URLContext *h, uint8_t *buf, int size) |
bf7723a6 |
{
HTTPContext *s = h->priv_data; |
3f375950 |
int err, new_location, read_ret, seek_ret; |
e5773d8b |
|
eb564b23 |
if (!s->hd)
return AVERROR_EOF; |
e5773d8b |
|
35127bf1 |
if (s->end_chunked_post && !s->end_header) {
err = http_read_header(h, &new_location);
if (err < 0)
return err; |
e5773d8b |
} |
558b86a5 |
|
7995ed8e |
if (s->chunksize >= 0) {
if (!s->chunksize) {
char line[32];
do { |
9613240f |
if ((err = http_get_line(s, line, sizeof(line))) < 0)
return err; |
7995ed8e |
} while (!*line); /* skip CR LF from last chunk */
s->chunksize = strtoll(line, NULL, 16);
|
1a3eb042 |
av_log(NULL, AV_LOG_TRACE, "Chunked encoding data size: %"PRId64"'\n", |
ce2e858f |
s->chunksize); |
7995ed8e |
if (!s->chunksize)
return 0;
}
size = FFMIN(size, s->chunksize);
} |
636273d3 |
#if CONFIG_ZLIB
if (s->compressed)
return http_buf_read_compressed(h, buf, size); |
ce2e858f |
#endif /* CONFIG_ZLIB */ |
3f375950 |
read_ret = http_buf_read(h, buf, size);
if (read_ret < 0 && s->reconnect && !h->is_streamed && s->filesize > 0 && s->off < s->filesize) {
av_log(h, AV_LOG_INFO, "Will reconnect at %"PRId64".\n", s->off);
seek_ret = http_seek_internal(h, s->off, SEEK_SET, 1);
if (seek_ret != s->off) {
av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", s->off);
return read_ret;
}
read_ret = http_buf_read(h, buf, size);
}
return read_ret; |
636273d3 |
}
// Like http_read_stream(), but no short reads.
// Assumes partial reads are an error.
static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
{
int pos = 0;
while (pos < size) {
int len = http_read_stream(h, buf + pos, size - pos);
if (len < 0)
return len;
pos += len;
}
return pos;
}
|
7601f941 |
static void update_metadata(HTTPContext *s, char *data)
{
char *key;
char *val;
char *end;
char *next = data;
while (*next) {
key = next;
val = strstr(key, "='");
if (!val)
break;
end = strstr(val, "';");
if (!end)
break;
*val = '\0';
*end = '\0';
val += 2;
av_dict_set(&s->metadata, key, val, 0);
next = end + 2;
}
}
|
8075c3d8 |
static int store_icy(URLContext *h, int size)
{
HTTPContext *s = h->priv_data;
/* until next metadata packet */
int remaining = s->icy_metaint - s->icy_data_read;
if (remaining < 0)
return AVERROR_INVALIDDATA;
if (!remaining) { |
ce2e858f |
/* The metadata packet is variable sized. It has a 1 byte header
* which sets the length of the packet (divided by 16). If it's 0,
* the metadata doesn't change. After the packet, icy_metaint bytes
* of normal data follows. */ |
8075c3d8 |
uint8_t ch;
int len = http_read_stream_all(h, &ch, 1);
if (len < 0)
return len;
if (ch > 0) {
char data[255 * 16 + 1];
int ret;
len = ch * 16;
ret = http_read_stream_all(h, data, len);
if (ret < 0)
return ret;
data[len + 1] = 0;
if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
return ret; |
7601f941 |
update_metadata(s, data); |
8075c3d8 |
}
s->icy_data_read = 0; |
ce2e858f |
remaining = s->icy_metaint; |
8075c3d8 |
}
return FFMIN(size, remaining);
}
|
636273d3 |
static int http_read(URLContext *h, uint8_t *buf, int size)
{
HTTPContext *s = h->priv_data;
|
a92fbe16 |
if (s->icy_metaint > 0) { |
8075c3d8 |
size = store_icy(h, size);
if (size < 0)
return size; |
a92fbe16 |
} |
8075c3d8 |
|
636273d3 |
size = http_read_stream(h, buf, size);
if (size > 0)
s->icy_data_read += size;
return size; |
558b86a5 |
}
/* used only when posting data */ |
27241cbf |
static int http_write(URLContext *h, const uint8_t *buf, int size) |
558b86a5 |
{ |
f2b9b19f |
char temp[11] = ""; /* 32-bit hex + CRLF + nul */ |
08f7a8ac |
int ret;
char crlf[] = "\r\n"; |
558b86a5 |
HTTPContext *s = h->priv_data; |
08f7a8ac |
|
6149485f |
if (!s->chunked_post) { |
a6a91589 |
/* non-chunked data is sent without any special encoding */ |
925e908b |
return ffurl_write(s->hd, buf, size); |
08f7a8ac |
}
/* silently ignore zero-size data since chunk encoding that would
* signal EOF */
if (size > 0) {
/* upload data using chunked encoding */ |
17b1493f |
snprintf(temp, sizeof(temp), "%x\r\n", size); |
f2b9b19f |
|
925e908b |
if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 || |
ce2e858f |
(ret = ffurl_write(s->hd, buf, size)) < 0 || |
925e908b |
(ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0) |
08f7a8ac |
return ret;
}
return size; |
558b86a5 |
}
|
ba354a8c |
static int http_shutdown(URLContext *h, int flags) |
558b86a5 |
{ |
08f7a8ac |
int ret = 0;
char footer[] = "0\r\n\r\n"; |
558b86a5 |
HTTPContext *s = h->priv_data; |
08f7a8ac |
/* signal end of chunked encoding if used */ |
de3a7ef2 |
if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) { |
925e908b |
ret = ffurl_write(s->hd, footer, sizeof(footer) - 1); |
08f7a8ac |
ret = ret > 0 ? 0 : ret; |
ba354a8c |
s->end_chunked_post = 1;
}
return ret;
}
static int http_close(URLContext *h)
{
int ret = 0;
HTTPContext *s = h->priv_data;
|
6bab3430 |
#if CONFIG_ZLIB
inflateEnd(&s->inflate_stream);
av_freep(&s->inflate_buffer); |
ce2e858f |
#endif /* CONFIG_ZLIB */ |
6bab3430 |
|
ce2e858f |
if (!s->end_chunked_post) |
ba354a8c |
/* Close the write direction by sending the end of chunked encoding. */
ret = http_shutdown(h, h->flags); |
08f7a8ac |
|
701ea516 |
if (s->hd) |
f218121a |
ffurl_closep(&s->hd); |
5c53bf7a |
av_dict_free(&s->chained_options); |
08f7a8ac |
return ret; |
558b86a5 |
}
|
3f375950 |
static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect) |
558b86a5 |
{
HTTPContext *s = h->priv_data;
URLContext *old_hd = s->hd; |
bc5c918e |
int64_t old_off = s->off; |
08c8e66a |
uint8_t old_buf[BUFFER_SIZE]; |
55a215ba |
int old_buf_size, ret; |
5c53bf7a |
AVDictionary *options = NULL; |
558b86a5 |
if (whence == AVSEEK_SIZE)
return s->filesize; |
3f375950 |
else if (!force_reconnect &&
((whence == SEEK_CUR && off == 0) ||
(whence == SEEK_SET && off == s->off))) |
857841c1 |
return s->off; |
558b86a5 |
else if ((s->filesize == -1 && whence == SEEK_END) || h->is_streamed) |
55a215ba |
return AVERROR(ENOSYS); |
558b86a5 |
if (whence == SEEK_CUR)
off += s->off;
else if (whence == SEEK_END)
off += s->filesize; |
1aa262f4 |
else if (whence != SEEK_SET)
return AVERROR(EINVAL); |
4ba6a534 |
if (off < 0)
return AVERROR(EINVAL); |
558b86a5 |
s->off = off;
|
4ba6a534 |
/* we save the old context in case the seek fails */
old_buf_size = s->buf_end - s->buf_ptr;
memcpy(old_buf, s->buf_ptr, old_buf_size);
s->hd = NULL;
|
558b86a5 |
/* if it fails, continue on old connection */ |
55a215ba |
if ((ret = http_open_cnx(h, &options)) < 0) { |
5c53bf7a |
av_dict_free(&options); |
08c8e66a |
memcpy(s->buffer, old_buf, old_buf_size);
s->buf_ptr = s->buffer;
s->buf_end = s->buffer + old_buf_size; |
ce2e858f |
s->hd = old_hd;
s->off = old_off; |
55a215ba |
return ret; |
558b86a5 |
} |
5c53bf7a |
av_dict_free(&options); |
e52a9145 |
ffurl_close(old_hd); |
558b86a5 |
return off;
}
|
3f375950 |
static int64_t http_seek(URLContext *h, int64_t off, int whence)
{
return http_seek_internal(h, off, whence, 0);
}
|
ce2e858f |
static int http_get_file_handle(URLContext *h) |
f0a80394 |
{
HTTPContext *s = h->priv_data; |
1869ea03 |
return ffurl_get_file_handle(s->hd); |
f0a80394 |
}
|
ce2e858f |
#define HTTP_CLASS(flavor) \
static const AVClass flavor ## _context_class = { \
.class_name = # flavor, \
.item_name = av_default_item_name, \
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \ |
389380c2 |
}
|
183baead |
#if CONFIG_HTTP_PROTOCOL |
389380c2 |
HTTP_CLASS(http);
|
66355be3 |
URLProtocol ff_http_protocol = { |
f35ff97f |
.name = "http", |
5c53bf7a |
.url_open2 = http_open, |
3240e69d |
.url_accept = http_accept,
.url_handshake = http_handshake, |
f35ff97f |
.url_read = http_read,
.url_write = http_write,
.url_seek = http_seek,
.url_close = http_close, |
f0a80394 |
.url_get_file_handle = http_get_file_handle, |
ba354a8c |
.url_shutdown = http_shutdown, |
f35ff97f |
.priv_data_size = sizeof(HTTPContext), |
3b384502 |
.priv_data_class = &http_context_class, |
32b83aee |
.flags = URL_PROTOCOL_FLAG_NETWORK, |
558b86a5 |
}; |
ce2e858f |
#endif /* CONFIG_HTTP_PROTOCOL */
|
183baead |
#if CONFIG_HTTPS_PROTOCOL |
389380c2 |
HTTP_CLASS(https);
|
183baead |
URLProtocol ff_https_protocol = {
.name = "https", |
5c53bf7a |
.url_open2 = http_open, |
183baead |
.url_read = http_read,
.url_write = http_write,
.url_seek = http_seek,
.url_close = http_close,
.url_get_file_handle = http_get_file_handle, |
dbaf79c9 |
.url_shutdown = http_shutdown, |
183baead |
.priv_data_size = sizeof(HTTPContext), |
3b384502 |
.priv_data_class = &https_context_class, |
32b83aee |
.flags = URL_PROTOCOL_FLAG_NETWORK, |
183baead |
}; |
ce2e858f |
#endif /* CONFIG_HTTPS_PROTOCOL */ |
9f1dae94 |
#if CONFIG_HTTPPROXY_PROTOCOL
static int http_proxy_close(URLContext *h)
{
HTTPContext *s = h->priv_data;
if (s->hd) |
f218121a |
ffurl_closep(&s->hd); |
9f1dae94 |
return 0;
}
static int http_proxy_open(URLContext *h, const char *uri, int flags)
{
HTTPContext *s = h->priv_data;
char hostname[1024], hoststr[1024];
char auth[1024], pathbuf[1024], *path; |
5d603f1b |
char lower_url[100]; |
e75bbcf4 |
int port, ret = 0, attempts = 0; |
9f1dae94 |
HTTPAuthType cur_auth_type;
char *authstr; |
5d603f1b |
int new_loc; |
9f1dae94 |
|
dd1e6b2a |
if( s->seekable == 1 )
h->is_streamed = 0;
else
h->is_streamed = 1; |
9f1dae94 |
av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
pathbuf, sizeof(pathbuf), uri);
ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
path = pathbuf;
if (*path == '/')
path++;
ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
NULL);
redo:
ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
&h->interrupt_callback, NULL);
if (ret < 0)
return ret;
authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
path, "CONNECT");
snprintf(s->buffer, sizeof(s->buffer),
"CONNECT %s HTTP/1.1\r\n"
"Host: %s\r\n"
"Connection: close\r\n"
"%s%s"
"\r\n",
path,
hoststr,
authstr ? "Proxy-" : "", authstr ? authstr : "");
av_freep(&authstr);
if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
goto fail;
|
ce2e858f |
s->buf_ptr = s->buffer;
s->buf_end = s->buffer; |
9f1dae94 |
s->line_count = 0; |
ce2e858f |
s->filesize = -1; |
9f1dae94 |
cur_auth_type = s->proxy_auth_state.auth_type;
|
5d603f1b |
/* Note: This uses buffering, potentially reading more than the
* HTTP header. If tunneling a protocol where the server starts
* the conversation, we might buffer part of that here, too.
* Reading that requires using the proper ffurl_read() function
* on this URLContext, not using the fd directly (as the tls
* protocol does). This shouldn't be an issue for tls though,
* since the client starts the conversation there, so there
* is no extra data that we might buffer up here.
*/
ret = http_read_header(h, &new_loc);
if (ret < 0)
goto fail; |
9f1dae94 |
|
e75bbcf4 |
attempts++;
if (s->http_code == 407 &&
(cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) { |
f218121a |
ffurl_closep(&s->hd); |
9f1dae94 |
goto redo;
}
if (s->http_code < 400)
return 0; |
81ce3f8e |
ret = ff_http_averror(s->http_code, AVERROR(EIO)); |
9f1dae94 |
fail:
http_proxy_close(h);
return ret;
}
static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
{
HTTPContext *s = h->priv_data;
return ffurl_write(s->hd, buf, size);
}
URLProtocol ff_httpproxy_protocol = {
.name = "httpproxy",
.url_open = http_proxy_open,
.url_read = http_buf_read,
.url_write = http_proxy_write,
.url_close = http_proxy_close,
.url_get_file_handle = http_get_file_handle,
.priv_data_size = sizeof(HTTPContext), |
32b83aee |
.flags = URL_PROTOCOL_FLAG_NETWORK, |
9f1dae94 |
}; |
ce2e858f |
#endif /* CONFIG_HTTPPROXY_PROTOCOL */ |