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.
459 lines
15 KiB
459 lines
15 KiB
/*****************************************************************************
|
|
* http.c
|
|
*****************************************************************************
|
|
* Copyright (C) 2001-2009 VLC authors and VideoLAN
|
|
*
|
|
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
|
|
* Remi Denis-Courmont
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
|
|
*****************************************************************************/
|
|
|
|
/*****************************************************************************
|
|
* Preamble
|
|
*****************************************************************************/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <vlc_common.h>
|
|
#include <vlc_configuration.h>
|
|
#include <vlc_plugin.h>
|
|
#include <vlc_sout.h>
|
|
#include <vlc_block.h>
|
|
|
|
|
|
#include <vlc_httpd.h>
|
|
|
|
/*****************************************************************************
|
|
* Module descriptor
|
|
*****************************************************************************/
|
|
static int Open ( vlc_object_t * );
|
|
static void Close( vlc_object_t * );
|
|
|
|
#define SOUT_CFG_PREFIX "sout-http-"
|
|
|
|
#define USER_TEXT N_("Username")
|
|
#define USER_LONGTEXT N_("Username that will be " \
|
|
"requested to access the stream." )
|
|
#define PASS_TEXT N_("Password")
|
|
#define PASS_LONGTEXT N_("Password that will be " \
|
|
"requested to access the stream." )
|
|
#define MIME_TEXT N_("Mime")
|
|
#define MIME_LONGTEXT N_("MIME returned by the server (autodetected " \
|
|
"if not specified)." )
|
|
#define METACUBE_TEXT N_("Metacube")
|
|
#define METACUBE_LONGTEXT N_("Use the Metacube protocol. Needed for streaming " \
|
|
"to the Cubemap reflector.")
|
|
|
|
|
|
vlc_module_begin ()
|
|
set_description( N_("HTTP stream output") )
|
|
set_capability( "sout access", 0 )
|
|
set_shortname( "HTTP" )
|
|
add_shortcut( "http", "https", "mmsh" )
|
|
set_subcategory( SUBCAT_SOUT_ACO )
|
|
add_string( SOUT_CFG_PREFIX "user", "",
|
|
USER_TEXT, USER_LONGTEXT )
|
|
add_password(SOUT_CFG_PREFIX "pwd", "", PASS_TEXT, PASS_LONGTEXT)
|
|
add_string( SOUT_CFG_PREFIX "mime", "",
|
|
MIME_TEXT, MIME_LONGTEXT )
|
|
add_bool( SOUT_CFG_PREFIX "metacube", false,
|
|
METACUBE_TEXT, METACUBE_LONGTEXT )
|
|
set_callbacks( Open, Close )
|
|
vlc_module_end ()
|
|
|
|
|
|
/*****************************************************************************
|
|
* Exported prototypes
|
|
*****************************************************************************/
|
|
static const char *const ppsz_sout_options[] = {
|
|
"user", "pwd", "mime", "metacube", NULL
|
|
};
|
|
|
|
static ssize_t Write( sout_access_out_t *, block_t * );
|
|
static int Control( sout_access_out_t *, int, va_list );
|
|
|
|
typedef struct
|
|
{
|
|
/* host */
|
|
httpd_host_t *p_httpd_host;
|
|
|
|
/* stream */
|
|
httpd_stream_t *p_httpd_stream;
|
|
|
|
/* gather header from stream */
|
|
int i_header_allocated;
|
|
int i_header_size;
|
|
uint8_t *p_header;
|
|
bool b_header_complete;
|
|
bool b_metacube;
|
|
bool b_has_keyframes;
|
|
} sout_access_out_sys_t;
|
|
|
|
/* Definitions for the Metacube2 protocol, used to communicate with Cubemap. */
|
|
|
|
static const uint8_t METACUBE2_SYNC[8] = {'c', 'u', 'b', 'e', '!', 'm', 'a', 'p'};
|
|
#define METACUBE_FLAGS_HEADER 0x1
|
|
#define METACUBE_FLAGS_NOT_SUITABLE_FOR_STREAM_START 0x2
|
|
|
|
struct metacube2_block_header
|
|
{
|
|
char sync[8]; /* METACUBE2_SYNC */
|
|
uint32_t size; /* Network byte order. Does not include header. */
|
|
uint16_t flags; /* Network byte order. METACUBE_FLAGS_*. */
|
|
uint16_t csum; /* Network byte order. CRC16 of size and flags. */
|
|
};
|
|
|
|
/*
|
|
* Implementation of Metacube2 utility functions. Taken from the Cubemap
|
|
* distribution and then relicensed by the author to LGPL2.1+ for inclusion
|
|
* into VLC.
|
|
*/
|
|
|
|
/*
|
|
* https://www.ece.cmu.edu/~koopman/pubs/KoopmanCRCWebinar9May2012.pdf
|
|
* recommends this for messages as short as ours (see table at page 34).
|
|
*/
|
|
#define METACUBE2_CRC_POLYNOMIAL 0x8FDB
|
|
|
|
/* Semi-random starting value to make sure all-zero won't pass. */
|
|
#define METACUBE2_CRC_START 0x1234
|
|
|
|
/* This code is based on code generated by pycrc. */
|
|
static uint16_t metacube2_compute_crc(const struct metacube2_block_header *hdr)
|
|
{
|
|
static const int data_len = sizeof(hdr->size) + sizeof(hdr->flags);
|
|
const uint8_t *data = (uint8_t *)&hdr->size;
|
|
uint16_t crc = METACUBE2_CRC_START;
|
|
|
|
for (int i = 0; i < data_len; ++i) {
|
|
uint8_t c = data[i];
|
|
for (int j = 0; j < 8; j++) {
|
|
int bit = crc & 0x8000;
|
|
crc = (crc << 1) | ((c >> (7 - j)) & 0x01);
|
|
if (bit) {
|
|
crc ^= METACUBE2_CRC_POLYNOMIAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Finalize. */
|
|
for (int i = 0; i < 16; i++) {
|
|
int bit = crc & 0x8000;
|
|
crc = crc << 1;
|
|
if (bit) {
|
|
crc ^= METACUBE2_CRC_POLYNOMIAL;
|
|
}
|
|
}
|
|
|
|
return crc;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Open: open the file
|
|
*****************************************************************************/
|
|
static int Open( vlc_object_t *p_this )
|
|
{
|
|
sout_access_out_t *p_access = (sout_access_out_t*)p_this;
|
|
sout_access_out_sys_t *p_sys;
|
|
|
|
char *psz_user;
|
|
char *psz_pwd;
|
|
char *psz_mime;
|
|
|
|
if( !( p_sys = p_access->p_sys =
|
|
malloc( sizeof( sout_access_out_sys_t ) ) ) )
|
|
return VLC_ENOMEM ;
|
|
|
|
config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
|
|
|
|
const char *path = p_access->psz_path;
|
|
path += strcspn( path, "/" );
|
|
if( path > p_access->psz_path )
|
|
{
|
|
const char *port = strrchr( p_access->psz_path, ':' );
|
|
if( port != NULL && strchr( port, ']' ) != NULL )
|
|
port = NULL; /* IPv6 numeral */
|
|
if( port != p_access->psz_path )
|
|
{
|
|
int len = (port ? port : path) - p_access->psz_path;
|
|
msg_Warn( p_access, "\"%.*s\" HTTP host might be ignored in "
|
|
"multiple-host configurations, use at your own risks.",
|
|
len, p_access->psz_path );
|
|
msg_Info( p_access, "Consider passing --http-host=IP on the "
|
|
"command line instead." );
|
|
|
|
char host[len + 1];
|
|
strncpy( host, p_access->psz_path, len );
|
|
host[len] = '\0';
|
|
|
|
var_Create( p_access, "http-host", VLC_VAR_STRING );
|
|
var_SetString( p_access, "http-host", host );
|
|
}
|
|
if( port != NULL )
|
|
{
|
|
/* int len = path - ++port;
|
|
msg_Info( p_access, "Consider passing --%s-port=%.*s on the "
|
|
"command line instead.",
|
|
strcasecmp( p_access->psz_access, "https" )
|
|
? "http" : "https", len, port ); */
|
|
port++;
|
|
|
|
int bind_port = atoi( port );
|
|
if( bind_port > 0 )
|
|
{
|
|
const char *var = strcasecmp( p_access->psz_access, "https" )
|
|
? "http-port" : "https-port";
|
|
var_Create( p_access, var, VLC_VAR_INTEGER );
|
|
var_SetInteger( p_access, var, bind_port );
|
|
}
|
|
}
|
|
}
|
|
if( !*path )
|
|
path = "/";
|
|
|
|
/* TLS support */
|
|
if( p_access->psz_access && !strcmp( p_access->psz_access, "https" ) )
|
|
p_sys->p_httpd_host = vlc_https_HostNew( VLC_OBJECT(p_access) );
|
|
else
|
|
p_sys->p_httpd_host = vlc_http_HostNew( VLC_OBJECT(p_access) );
|
|
|
|
if( p_sys->p_httpd_host == NULL )
|
|
{
|
|
msg_Err( p_access, "cannot start HTTP server" );
|
|
free( p_sys );
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
psz_user = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "user" );
|
|
psz_pwd = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "pwd" );
|
|
if( p_access->psz_access && !strcmp( p_access->psz_access, "mmsh" ) )
|
|
{
|
|
psz_mime = strdup( "video/x-ms-asf-stream" );
|
|
}
|
|
else
|
|
{
|
|
psz_mime = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "mime" );
|
|
}
|
|
|
|
p_sys->b_metacube = var_GetBool( p_access, SOUT_CFG_PREFIX "metacube" );
|
|
p_sys->b_has_keyframes = false;
|
|
|
|
p_sys->p_httpd_stream =
|
|
httpd_StreamNew( p_sys->p_httpd_host, path, psz_mime,
|
|
psz_user, psz_pwd );
|
|
free( psz_user );
|
|
free( psz_pwd );
|
|
free( psz_mime );
|
|
|
|
if( p_sys->p_httpd_stream == NULL )
|
|
{
|
|
msg_Err( p_access, "cannot add stream %s", path );
|
|
httpd_HostDelete( p_sys->p_httpd_host );
|
|
|
|
free( p_sys );
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
if( p_sys->b_metacube )
|
|
{
|
|
const httpd_header headers[] = {
|
|
{ (char *)"Content-encoding", (char *)"metacube" }
|
|
};
|
|
int err = httpd_StreamSetHTTPHeaders( p_sys->p_httpd_stream, headers,
|
|
ARRAY_SIZE(headers) );
|
|
if( err != VLC_SUCCESS )
|
|
{
|
|
free( p_sys );
|
|
return err;
|
|
}
|
|
}
|
|
|
|
p_sys->i_header_allocated = 1024;
|
|
p_sys->i_header_size = 0;
|
|
p_sys->p_header = xmalloc( p_sys->i_header_allocated );
|
|
p_sys->b_header_complete = false;
|
|
|
|
p_access->pf_write = Write;
|
|
p_access->pf_control = Control;
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Close: close the target
|
|
*****************************************************************************/
|
|
static void Close( vlc_object_t * p_this )
|
|
{
|
|
sout_access_out_t *p_access = (sout_access_out_t*)p_this;
|
|
sout_access_out_sys_t *p_sys = p_access->p_sys;
|
|
|
|
httpd_StreamDelete( p_sys->p_httpd_stream );
|
|
httpd_HostDelete( p_sys->p_httpd_host );
|
|
|
|
free( p_sys->p_header );
|
|
|
|
msg_Dbg( p_access, "Close" );
|
|
|
|
free( p_sys );
|
|
}
|
|
|
|
static int Control( sout_access_out_t *p_access, int i_query, va_list args )
|
|
{
|
|
(void)p_access;
|
|
|
|
switch( i_query )
|
|
{
|
|
case ACCESS_OUT_CONTROLS_PACE:
|
|
*va_arg( args, bool * ) = false;
|
|
break;
|
|
|
|
default:
|
|
return VLC_EGENERIC;
|
|
}
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Write:
|
|
*****************************************************************************/
|
|
static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
|
|
{
|
|
sout_access_out_sys_t *p_sys = p_access->p_sys;
|
|
int i_err = 0;
|
|
int i_len = 0;
|
|
|
|
while( p_buffer )
|
|
{
|
|
block_t *p_next;
|
|
|
|
if( p_buffer->i_flags & BLOCK_FLAG_HEADER )
|
|
{
|
|
/* gather header */
|
|
if( p_sys->b_header_complete )
|
|
{
|
|
/* free previously gathered header */
|
|
p_sys->i_header_size = 0;
|
|
p_sys->b_header_complete = false;
|
|
}
|
|
if( (int)(p_buffer->i_buffer + p_sys->i_header_size) >
|
|
p_sys->i_header_allocated )
|
|
{
|
|
p_sys->i_header_allocated =
|
|
p_buffer->i_buffer + p_sys->i_header_size + 1024;
|
|
p_sys->p_header = xrealloc( p_sys->p_header,
|
|
p_sys->i_header_allocated );
|
|
}
|
|
memcpy( &p_sys->p_header[p_sys->i_header_size],
|
|
p_buffer->p_buffer,
|
|
p_buffer->i_buffer );
|
|
p_sys->i_header_size += p_buffer->i_buffer;
|
|
}
|
|
else if( !p_sys->b_header_complete )
|
|
{
|
|
p_sys->b_header_complete = true;
|
|
|
|
if ( p_sys->b_metacube )
|
|
{
|
|
struct metacube2_block_header hdr;
|
|
memcpy( hdr.sync, METACUBE2_SYNC, sizeof( METACUBE2_SYNC ) );
|
|
hdr.size = hton32( p_sys->i_header_size );
|
|
hdr.flags = hton16( METACUBE_FLAGS_HEADER );
|
|
hdr.csum = hton16( metacube2_compute_crc( &hdr ) );
|
|
|
|
int i_header_size = p_sys->i_header_size + sizeof( hdr );
|
|
block_t *p_hdr_block = block_Alloc( i_header_size );
|
|
if( p_hdr_block == NULL ) {
|
|
block_ChainRelease( p_buffer );
|
|
return VLC_ENOMEM;
|
|
}
|
|
p_hdr_block->i_flags = 0;
|
|
memcpy( p_hdr_block->p_buffer, &hdr, sizeof( hdr ) );
|
|
memcpy( p_hdr_block->p_buffer + sizeof( hdr ), p_sys->p_header, p_sys->i_header_size );
|
|
|
|
/* send the combined header here instead of sending them as regular
|
|
* data, so that we get them as a single Metacube header block */
|
|
httpd_StreamHeader( p_sys->p_httpd_stream, p_hdr_block->p_buffer, p_hdr_block->i_buffer );
|
|
httpd_StreamSend( p_sys->p_httpd_stream, p_hdr_block );
|
|
|
|
block_Release( p_hdr_block );
|
|
}
|
|
else
|
|
{
|
|
httpd_StreamHeader( p_sys->p_httpd_stream, p_sys->p_header,
|
|
p_sys->i_header_size );
|
|
}
|
|
}
|
|
|
|
i_len += p_buffer->i_buffer;
|
|
|
|
if( p_buffer->i_flags & BLOCK_FLAG_TYPE_I )
|
|
{
|
|
p_sys->b_has_keyframes = true;
|
|
}
|
|
|
|
p_next = p_buffer->p_next;
|
|
|
|
if( p_sys->b_metacube )
|
|
{
|
|
/* header data is combined into one packet and sent earlier */
|
|
if( p_buffer->i_flags & BLOCK_FLAG_HEADER ) {
|
|
block_Release( p_buffer );
|
|
p_buffer = p_next;
|
|
continue;
|
|
}
|
|
|
|
/* prepend Metacube header */
|
|
struct metacube2_block_header hdr;
|
|
memcpy( hdr.sync, METACUBE2_SYNC, sizeof( METACUBE2_SYNC ) );
|
|
hdr.size = hton32( p_buffer->i_buffer );
|
|
hdr.flags = hton16( 0 );
|
|
if( p_buffer->i_flags & BLOCK_FLAG_HEADER )
|
|
hdr.flags |= hton16( METACUBE_FLAGS_HEADER );
|
|
if( p_sys->b_has_keyframes && !( p_buffer->i_flags & BLOCK_FLAG_TYPE_I ) )
|
|
hdr.flags |= hton16( METACUBE_FLAGS_NOT_SUITABLE_FOR_STREAM_START );
|
|
hdr.csum = hton16( metacube2_compute_crc( &hdr ) );
|
|
|
|
p_buffer = block_Realloc( p_buffer, sizeof( hdr ), p_buffer->i_buffer );
|
|
if( p_buffer == NULL ) {
|
|
block_ChainRelease( p_next );
|
|
return VLC_ENOMEM;
|
|
}
|
|
memcpy( p_buffer->p_buffer, &hdr, sizeof( hdr ) );
|
|
}
|
|
|
|
/* send data */
|
|
i_err = httpd_StreamSend( p_sys->p_httpd_stream, p_buffer );
|
|
|
|
block_Release( p_buffer );
|
|
p_buffer = p_next;
|
|
|
|
if( i_err < 0 )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( i_err < 0 )
|
|
{
|
|
block_ChainRelease( p_buffer );
|
|
}
|
|
|
|
return( i_err < 0 ? VLC_EGENERIC : i_len );
|
|
}
|
|
|