mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
788 lines
24 KiB
788 lines
24 KiB
/* |
|
* HTTP protocol for ffmpeg client |
|
* Copyright (c) 2000, 2001 Fabrice Bellard |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include "libavutil/avstring.h" |
|
#include "avformat.h" |
|
#include <unistd.h> |
|
#include "internal.h" |
|
#include "network.h" |
|
#include "http.h" |
|
#include "os_support.h" |
|
#include "httpauth.h" |
|
#include "url.h" |
|
#include "libavutil/opt.h" |
|
|
|
/* XXX: POST protocol is not completely implemented because ffmpeg uses |
|
only a subset of it. */ |
|
|
|
/* used for protocol handling */ |
|
#define BUFFER_SIZE 1024 |
|
#define MAX_REDIRECTS 8 |
|
|
|
typedef struct { |
|
const AVClass *class; |
|
URLContext *hd; |
|
unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end; |
|
int line_count; |
|
int http_code; |
|
int64_t chunksize; /**< Used if "Transfer-Encoding: chunked" otherwise -1. */ |
|
char *user_agent; |
|
int64_t off, filesize; |
|
char location[MAX_URL_SIZE]; |
|
HTTPAuthState auth_state; |
|
HTTPAuthState proxy_auth_state; |
|
char *headers; |
|
int willclose; /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */ |
|
int chunked_post; |
|
int end_chunked_post; /**< A flag which indicates if the end of chunked encoding has been sent. */ |
|
int end_header; /**< A flag which indicates we have finished to read POST reply. */ |
|
int multiple_requests; /**< A flag which indicates if we use persistent connections. */ |
|
uint8_t *post_data; |
|
int post_datalen; |
|
} HTTPContext; |
|
|
|
#define OFFSET(x) offsetof(HTTPContext, x) |
|
#define D AV_OPT_FLAG_DECODING_PARAM |
|
#define E AV_OPT_FLAG_ENCODING_PARAM |
|
#define DEC AV_OPT_FLAG_DECODING_PARAM |
|
static const AVOption options[] = { |
|
{"chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_INT, {.dbl = 1}, 0, 1, E }, |
|
{"headers", "custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D|E }, |
|
{"user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC}, |
|
{"multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, D|E }, |
|
{"post_data", "custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D|E }, |
|
{NULL} |
|
}; |
|
#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,\ |
|
} |
|
|
|
HTTP_CLASS(http); |
|
HTTP_CLASS(https); |
|
|
|
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); |
|
|
|
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)); |
|
memcpy(&((HTTPContext*)dest->priv_data)->proxy_auth_state, |
|
&((HTTPContext*)src->priv_data)->proxy_auth_state, |
|
sizeof(HTTPAuthState)); |
|
} |
|
|
|
/* return non zero if error */ |
|
static int http_open_cnx(URLContext *h) |
|
{ |
|
const char *path, *proxy_path, *lower_proto = "tcp", *local_path; |
|
char hostname[1024], hoststr[1024], proto[10]; |
|
char auth[1024], proxyauth[1024] = ""; |
|
char path1[1024]; |
|
char buf[1024], urlbuf[1024]; |
|
int port, use_proxy, err, location_changed = 0, redirects = 0, attempts = 0; |
|
HTTPAuthType cur_auth_type, cur_proxy_auth_type; |
|
HTTPContext *s = h->priv_data; |
|
URLContext *hd = NULL; |
|
|
|
proxy_path = getenv("http_proxy"); |
|
use_proxy = (proxy_path != NULL) && !getenv("no_proxy") && |
|
av_strstart(proxy_path, "http://", NULL); |
|
|
|
/* fill the dest addr */ |
|
redo: |
|
/* needed in any case to build the host string */ |
|
av_url_split(proto, sizeof(proto), auth, sizeof(auth), |
|
hostname, sizeof(hostname), &port, |
|
path1, sizeof(path1), s->location); |
|
ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL); |
|
|
|
if (!strcmp(proto, "https")) { |
|
lower_proto = "tls"; |
|
use_proxy = 0; |
|
if (port < 0) |
|
port = 443; |
|
} |
|
if (port < 0) |
|
port = 80; |
|
|
|
if (path1[0] == '\0') |
|
path = "/"; |
|
else |
|
path = path1; |
|
local_path = path; |
|
if (use_proxy) { |
|
/* 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); |
|
} |
|
|
|
ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL); |
|
|
|
if (!s->hd) { |
|
err = ffurl_open(&hd, buf, AVIO_FLAG_READ_WRITE, |
|
&h->interrupt_callback, NULL); |
|
if (err < 0) |
|
goto fail; |
|
|
|
s->hd = hd; |
|
} |
|
|
|
cur_auth_type = s->auth_state.auth_type; |
|
cur_proxy_auth_type = s->auth_state.auth_type; |
|
if (http_connect(h, path, local_path, hoststr, auth, proxyauth, &location_changed) < 0) |
|
goto fail; |
|
attempts++; |
|
if (s->http_code == 401) { |
|
if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) && |
|
s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) { |
|
ffurl_close(hd); |
|
goto redo; |
|
} else |
|
goto fail; |
|
} |
|
if (s->http_code == 407) { |
|
if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) && |
|
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) { |
|
ffurl_close(hd); |
|
goto redo; |
|
} else |
|
goto fail; |
|
} |
|
if ((s->http_code == 301 || s->http_code == 302 || s->http_code == 303 || s->http_code == 307) |
|
&& location_changed == 1) { |
|
/* url moved, get next */ |
|
ffurl_close(hd); |
|
if (redirects++ >= MAX_REDIRECTS) |
|
return AVERROR(EIO); |
|
/* Restart the authentication process with the new target, which |
|
* might use a different auth mechanism. */ |
|
memset(&s->auth_state, 0, sizeof(s->auth_state)); |
|
attempts = 0; |
|
location_changed = 0; |
|
goto redo; |
|
} |
|
return 0; |
|
fail: |
|
if (hd) |
|
ffurl_close(hd); |
|
s->hd = NULL; |
|
return AVERROR(EIO); |
|
} |
|
|
|
int ff_http_do_new_request(URLContext *h, const char *uri) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
|
|
s->off = 0; |
|
av_strlcpy(s->location, uri, sizeof(s->location)); |
|
|
|
return http_open_cnx(h); |
|
} |
|
|
|
static int http_open(URLContext *h, const char *uri, int flags) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
|
|
h->is_streamed = 1; |
|
|
|
s->filesize = -1; |
|
av_strlcpy(s->location, uri, sizeof(s->location)); |
|
|
|
if (s->headers) { |
|
int len = strlen(s->headers); |
|
if (len < 2 || strcmp("\r\n", s->headers + len - 2)) |
|
av_log(h, AV_LOG_WARNING, "No trailing CRLF found in HTTP header.\n"); |
|
} |
|
|
|
return http_open_cnx(h); |
|
} |
|
static int http_getc(HTTPContext *s) |
|
{ |
|
int len; |
|
if (s->buf_ptr >= s->buf_end) { |
|
len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE); |
|
if (len < 0) { |
|
return len; |
|
} else if (len == 0) { |
|
return -1; |
|
} else { |
|
s->buf_ptr = s->buffer; |
|
s->buf_end = s->buffer + len; |
|
} |
|
} |
|
return *s->buf_ptr++; |
|
} |
|
|
|
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 ch; |
|
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; |
|
} |
|
} |
|
} |
|
|
|
static int process_line(URLContext *h, char *line, int line_count, |
|
int *new_location) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
char *tag, *p, *end; |
|
|
|
/* end of header */ |
|
if (line[0] == '\0') { |
|
s->end_header = 1; |
|
return 0; |
|
} |
|
|
|
p = line; |
|
if (line_count == 0) { |
|
while (!isspace(*p) && *p != '\0') |
|
p++; |
|
while (isspace(*p)) |
|
p++; |
|
s->http_code = strtol(p, &end, 10); |
|
|
|
av_dlog(NULL, "http_code=%d\n", s->http_code); |
|
|
|
/* error codes are 4xx and 5xx, but regard 401 as a success, so we |
|
* don't abort until all headers have been parsed. */ |
|
if (s->http_code >= 400 && s->http_code < 600 && (s->http_code != 401 |
|
|| s->auth_state.auth_type != HTTP_AUTH_NONE) && |
|
(s->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", |
|
s->http_code, end); |
|
return -1; |
|
} |
|
} else { |
|
while (*p != '\0' && *p != ':') |
|
p++; |
|
if (*p != ':') |
|
return 1; |
|
|
|
*p = '\0'; |
|
tag = line; |
|
p++; |
|
while (isspace(*p)) |
|
p++; |
|
if (!av_strcasecmp(tag, "Location")) { |
|
strcpy(s->location, p); |
|
*new_location = 1; |
|
} else if (!av_strcasecmp (tag, "Content-Length") && s->filesize == -1) { |
|
s->filesize = atoll(p); |
|
} else if (!av_strcasecmp (tag, "Content-Range")) { |
|
/* "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 */ |
|
} else if (!av_strcasecmp(tag, "Accept-Ranges") && !strncmp(p, "bytes", 5)) { |
|
h->is_streamed = 0; |
|
} else if (!av_strcasecmp (tag, "Transfer-Encoding") && !av_strncasecmp(p, "chunked", 7)) { |
|
s->filesize = -1; |
|
s->chunksize = 0; |
|
} else if (!av_strcasecmp (tag, "WWW-Authenticate")) { |
|
ff_http_auth_handle_header(&s->auth_state, tag, p); |
|
} else if (!av_strcasecmp (tag, "Authentication-Info")) { |
|
ff_http_auth_handle_header(&s->auth_state, tag, p); |
|
} else if (!av_strcasecmp (tag, "Proxy-Authenticate")) { |
|
ff_http_auth_handle_header(&s->proxy_auth_state, tag, p); |
|
} else if (!av_strcasecmp (tag, "Connection")) { |
|
if (!strcmp(p, "close")) |
|
s->willclose = 1; |
|
} |
|
} |
|
return 1; |
|
} |
|
|
|
static inline int has_header(const char *str, const char *header) |
|
{ |
|
/* header + 2 to skip over CRLF prefix. (make sure you have one!) */ |
|
if (!str) |
|
return 0; |
|
return av_stristart(str, header + 2, NULL) || av_stristr(str, header); |
|
} |
|
|
|
static int http_read_header(URLContext *h, int *new_location) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
char line[1024]; |
|
int err = 0; |
|
|
|
for (;;) { |
|
if ((err = http_get_line(s, line, sizeof(line))) < 0) |
|
return err; |
|
|
|
av_dlog(NULL, "header='%s'\n", line); |
|
|
|
err = process_line(h, line, s->line_count, new_location); |
|
if (err < 0) |
|
return err; |
|
if (err == 0) |
|
break; |
|
s->line_count++; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
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) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
int post, err; |
|
char headers[1024] = ""; |
|
char *authstr = NULL, *proxyauthstr = NULL; |
|
int64_t off = s->off; |
|
int len = 0; |
|
const char *method; |
|
|
|
|
|
/* send http header */ |
|
post = h->flags & AVIO_FLAG_WRITE; |
|
|
|
if (s->post_data) { |
|
/* force POST method and disable chunked encoding when |
|
* custom HTTP post data is set */ |
|
post = 1; |
|
s->chunked_post = 0; |
|
} |
|
|
|
method = post ? "POST" : "GET"; |
|
authstr = ff_http_auth_create_response(&s->auth_state, auth, local_path, |
|
method); |
|
proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth, |
|
local_path, method); |
|
|
|
/* set default headers if needed */ |
|
if (!has_header(s->headers, "\r\nUser-Agent: ")) |
|
len += av_strlcatf(headers + len, sizeof(headers) - len, |
|
"User-Agent: %s\r\n", |
|
s->user_agent ? s->user_agent : LIBAVFORMAT_IDENT); |
|
if (!has_header(s->headers, "\r\nAccept: ")) |
|
len += av_strlcpy(headers + len, "Accept: */*\r\n", |
|
sizeof(headers) - len); |
|
if (!has_header(s->headers, "\r\nRange: ") && !post) |
|
len += av_strlcatf(headers + len, sizeof(headers) - len, |
|
"Range: bytes=%"PRId64"-\r\n", s->off); |
|
|
|
if (!has_header(s->headers, "\r\nConnection: ")) { |
|
if (s->multiple_requests) { |
|
len += av_strlcpy(headers + len, "Connection: keep-alive\r\n", |
|
sizeof(headers) - len); |
|
} else { |
|
len += av_strlcpy(headers + len, "Connection: close\r\n", |
|
sizeof(headers) - len); |
|
} |
|
} |
|
|
|
if (!has_header(s->headers, "\r\nHost: ")) |
|
len += av_strlcatf(headers + len, sizeof(headers) - len, |
|
"Host: %s\r\n", hoststr); |
|
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); |
|
|
|
/* now add in custom headers */ |
|
if (s->headers) |
|
av_strlcpy(headers + len, s->headers, sizeof(headers) - len); |
|
|
|
snprintf(s->buffer, sizeof(s->buffer), |
|
"%s %s HTTP/1.1\r\n" |
|
"%s" |
|
"%s" |
|
"%s" |
|
"%s%s" |
|
"\r\n", |
|
method, |
|
path, |
|
post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "", |
|
headers, |
|
authstr ? authstr : "", |
|
proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : ""); |
|
|
|
av_freep(&authstr); |
|
av_freep(&proxyauthstr); |
|
if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0) |
|
return err; |
|
|
|
if (s->post_data) |
|
if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0) |
|
return err; |
|
|
|
/* init input buffer */ |
|
s->buf_ptr = s->buffer; |
|
s->buf_end = s->buffer; |
|
s->line_count = 0; |
|
s->off = 0; |
|
s->filesize = -1; |
|
s->willclose = 0; |
|
s->end_chunked_post = 0; |
|
s->end_header = 0; |
|
if (post && !s->post_data) { |
|
/* 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; |
|
return 0; |
|
} |
|
s->chunksize = -1; |
|
|
|
/* wait for header */ |
|
err = http_read_header(h, new_location); |
|
if (err < 0) |
|
return err; |
|
|
|
return (off == s->off) ? 0 : -1; |
|
} |
|
|
|
|
|
static int http_buf_read(URLContext *h, uint8_t *buf, int size) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
int len; |
|
/* 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 { |
|
if (!s->willclose && s->filesize >= 0 && s->off >= s->filesize) |
|
return AVERROR_EOF; |
|
len = ffurl_read(s->hd, buf, size); |
|
} |
|
if (len > 0) { |
|
s->off += len; |
|
if (s->chunksize > 0) |
|
s->chunksize -= len; |
|
} |
|
return len; |
|
} |
|
|
|
static int http_read(URLContext *h, uint8_t *buf, int size) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
int err, new_location; |
|
|
|
if (s->end_chunked_post) { |
|
if (!s->end_header) { |
|
err = http_read_header(h, &new_location); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
return http_buf_read(h, buf, size); |
|
} |
|
|
|
if (s->chunksize >= 0) { |
|
if (!s->chunksize) { |
|
char line[32]; |
|
|
|
for(;;) { |
|
do { |
|
if ((err = http_get_line(s, line, sizeof(line))) < 0) |
|
return err; |
|
} while (!*line); /* skip CR LF from last chunk */ |
|
|
|
s->chunksize = strtoll(line, NULL, 16); |
|
|
|
av_dlog(NULL, "Chunked encoding data size: %"PRId64"'\n", s->chunksize); |
|
|
|
if (!s->chunksize) |
|
return 0; |
|
break; |
|
} |
|
} |
|
size = FFMIN(size, s->chunksize); |
|
} |
|
return http_buf_read(h, buf, size); |
|
} |
|
|
|
/* used only when posting data */ |
|
static int http_write(URLContext *h, const uint8_t *buf, int size) |
|
{ |
|
char temp[11] = ""; /* 32-bit hex + CRLF + nul */ |
|
int ret; |
|
char crlf[] = "\r\n"; |
|
HTTPContext *s = h->priv_data; |
|
|
|
if (!s->chunked_post) { |
|
/* non-chunked data is sent without any special encoding */ |
|
return ffurl_write(s->hd, buf, size); |
|
} |
|
|
|
/* silently ignore zero-size data since chunk encoding that would |
|
* signal EOF */ |
|
if (size > 0) { |
|
/* upload data using chunked encoding */ |
|
snprintf(temp, sizeof(temp), "%x\r\n", size); |
|
|
|
if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 || |
|
(ret = ffurl_write(s->hd, buf, size)) < 0 || |
|
(ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0) |
|
return ret; |
|
} |
|
return size; |
|
} |
|
|
|
static int http_shutdown(URLContext *h, int flags) |
|
{ |
|
int ret = 0; |
|
char footer[] = "0\r\n\r\n"; |
|
HTTPContext *s = h->priv_data; |
|
|
|
/* signal end of chunked encoding if used */ |
|
if ((flags & AVIO_FLAG_WRITE) && s->chunked_post) { |
|
ret = ffurl_write(s->hd, footer, sizeof(footer) - 1); |
|
ret = ret > 0 ? 0 : ret; |
|
s->end_chunked_post = 1; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int http_close(URLContext *h) |
|
{ |
|
int ret = 0; |
|
HTTPContext *s = h->priv_data; |
|
|
|
if (!s->end_chunked_post) { |
|
/* Close the write direction by sending the end of chunked encoding. */ |
|
ret = http_shutdown(h, h->flags); |
|
} |
|
|
|
if (s->hd) |
|
ffurl_close(s->hd); |
|
return ret; |
|
} |
|
|
|
static int64_t http_seek(URLContext *h, int64_t off, int whence) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
URLContext *old_hd = s->hd; |
|
int64_t old_off = s->off; |
|
uint8_t old_buf[BUFFER_SIZE]; |
|
int old_buf_size; |
|
|
|
if (whence == AVSEEK_SIZE) |
|
return s->filesize; |
|
else if ((s->filesize == -1 && whence == SEEK_END) || h->is_streamed) |
|
return -1; |
|
|
|
/* 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; |
|
if (whence == SEEK_CUR) |
|
off += s->off; |
|
else if (whence == SEEK_END) |
|
off += s->filesize; |
|
s->off = off; |
|
|
|
/* if it fails, continue on old connection */ |
|
if (http_open_cnx(h) < 0) { |
|
memcpy(s->buffer, old_buf, old_buf_size); |
|
s->buf_ptr = s->buffer; |
|
s->buf_end = s->buffer + old_buf_size; |
|
s->hd = old_hd; |
|
s->off = old_off; |
|
return -1; |
|
} |
|
ffurl_close(old_hd); |
|
return off; |
|
} |
|
|
|
static int |
|
http_get_file_handle(URLContext *h) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
return ffurl_get_file_handle(s->hd); |
|
} |
|
|
|
#if CONFIG_HTTP_PROTOCOL |
|
URLProtocol ff_http_protocol = { |
|
.name = "http", |
|
.url_open = http_open, |
|
.url_read = http_read, |
|
.url_write = http_write, |
|
.url_seek = http_seek, |
|
.url_close = http_close, |
|
.url_get_file_handle = http_get_file_handle, |
|
.url_shutdown = http_shutdown, |
|
.priv_data_size = sizeof(HTTPContext), |
|
.priv_data_class = &http_context_class, |
|
.flags = URL_PROTOCOL_FLAG_NETWORK, |
|
}; |
|
#endif |
|
#if CONFIG_HTTPS_PROTOCOL |
|
URLProtocol ff_https_protocol = { |
|
.name = "https", |
|
.url_open = http_open, |
|
.url_read = http_read, |
|
.url_write = http_write, |
|
.url_seek = http_seek, |
|
.url_close = http_close, |
|
.url_get_file_handle = http_get_file_handle, |
|
.priv_data_size = sizeof(HTTPContext), |
|
.priv_data_class = &https_context_class, |
|
.flags = URL_PROTOCOL_FLAG_NETWORK, |
|
}; |
|
#endif |
|
|
|
#if CONFIG_HTTPPROXY_PROTOCOL |
|
static int http_proxy_close(URLContext *h) |
|
{ |
|
HTTPContext *s = h->priv_data; |
|
if (s->hd) |
|
ffurl_close(s->hd); |
|
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; |
|
char lower_url[100]; |
|
int port, ret = 0, attempts = 0; |
|
HTTPAuthType cur_auth_type; |
|
char *authstr; |
|
int new_loc; |
|
|
|
h->is_streamed = 1; |
|
|
|
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; |
|
|
|
s->buf_ptr = s->buffer; |
|
s->buf_end = s->buffer; |
|
s->line_count = 0; |
|
s->filesize = -1; |
|
cur_auth_type = s->proxy_auth_state.auth_type; |
|
|
|
/* 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; |
|
|
|
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) { |
|
ffurl_close(s->hd); |
|
s->hd = NULL; |
|
goto redo; |
|
} |
|
|
|
if (s->http_code < 400) |
|
return 0; |
|
ret = AVERROR(EIO); |
|
|
|
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), |
|
.flags = URL_PROTOCOL_FLAG_NETWORK, |
|
}; |
|
#endif
|
|
|