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vlc/src/network/httpd.c

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/*****************************************************************************
* httpd.c
*****************************************************************************
* Copyright (C) 2004-2006 VLC authors and VideoLAN
* Copyright © 2004-2007 Rémi Denis-Courmont
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Rémi Denis-Courmont <rem # videolan.org>
*
* 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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_httpd.h>
#include <assert.h>
#include <vlc_network.h>
#include <vlc_tls.h>
#include <vlc_strings.h>
#include <vlc_rand.h>
#include <vlc_charset.h>
#include <vlc_url.h>
#include <vlc_mime.h>
#include <vlc_block.h>
#include "../libvlc.h"
#include <string.h>
#include <errno.h>
#include <unistd.h>
#ifdef HAVE_POLL
# include <poll.h>
#endif
#if defined( _WIN32 )
# include <winsock2.h>
#else
# include <sys/socket.h>
#endif
#if defined( _WIN32 )
/* We need HUGE buffer otherwise TCP throughput is very limited */
#define HTTPD_CL_BUFSIZE 1000000
#else
#define HTTPD_CL_BUFSIZE 10000
#endif
static void httpd_ClientClean( httpd_client_t *cl );
static void httpd_AppendData( httpd_stream_t *stream, uint8_t *p_data, int i_data );
/* each host run in his own thread */
struct httpd_host_t
{
VLC_COMMON_MEMBERS
/* ref count */
unsigned i_ref;
/* address/port and socket for listening at connections */
int *fds;
unsigned nfd;
unsigned port;
vlc_thread_t thread;
vlc_mutex_t lock;
vlc_cond_t wait;
/* all registered url (becarefull that 2 httpd_url_t could point at the same url)
* This will slow down the url research but make my live easier
* All url will have their cb trigger, but only the first one can answer
* */
int i_url;
httpd_url_t **url;
int i_client;
httpd_client_t **client;
/* TLS data */
vlc_tls_creds_t *p_tls;
};
struct httpd_url_t
{
httpd_host_t *host;
vlc_mutex_t lock;
char *psz_url;
char *psz_user;
char *psz_password;
struct
{
httpd_callback_t cb;
httpd_callback_sys_t *p_sys;
} catch[HTTPD_MSG_MAX];
};
/* status */
enum
{
HTTPD_CLIENT_RECEIVING,
HTTPD_CLIENT_RECEIVE_DONE,
HTTPD_CLIENT_SENDING,
HTTPD_CLIENT_SEND_DONE,
HTTPD_CLIENT_WAITING,
HTTPD_CLIENT_DEAD,
HTTPD_CLIENT_TLS_HS_IN,
HTTPD_CLIENT_TLS_HS_OUT
};
/* mode */
enum
{
HTTPD_CLIENT_FILE, /* default */
HTTPD_CLIENT_STREAM, /* regulary get data from cb */
};
struct httpd_client_t
{
httpd_url_t *url;
int i_ref;
int fd;
bool b_stream_mode;
uint8_t i_state;
mtime_t i_activity_date;
mtime_t i_activity_timeout;
/* buffer for reading header */
int i_buffer_size;
int i_buffer;
uint8_t *p_buffer;
/*
* If waiting for a keyframe, this is the position (in bytes) of the
* last keyframe the stream saw before this client connected.
* Otherwise, -1.
*/
int64_t i_keyframe_wait_to_pass;
/* */
httpd_message_t query; /* client -> httpd */
httpd_message_t answer; /* httpd -> client */
/* TLS data */
vlc_tls_t *p_tls;
};
/*****************************************************************************
* Various functions
*****************************************************************************/
static const char *httpd_ReasonFromCode( unsigned i_code )
{
typedef struct
{
unsigned i_code;
const char psz_reason[36];
} http_status_info;
static const http_status_info http_reason[] =
{
/*{ 100, "Continue" },
{ 101, "Switching Protocols" },*/
{ 200, "OK" },
/*{ 201, "Created" },
{ 202, "Accepted" },
{ 203, "Non-authoritative information" },
{ 204, "No content" },
{ 205, "Reset content" },
{ 206, "Partial content" },
{ 250, "Low on storage space" },
{ 300, "Multiple choices" },*/
{ 301, "Moved permanently" },
/*{ 302, "Moved temporarily" },
{ 303, "See other" },
{ 304, "Not modified" },
{ 305, "Use proxy" },
{ 307, "Temporary redirect" },
{ 400, "Bad request" },*/
{ 401, "Unauthorized" },
/*{ 402, "Payment Required" },*/
{ 403, "Forbidden" },
{ 404, "Not found" },
{ 405, "Method not allowed" },
/*{ 406, "Not acceptable" },
{ 407, "Proxy authentication required" },
{ 408, "Request time-out" },
{ 409, "Conflict" },
{ 410, "Gone" },
{ 411, "Length required" },
{ 412, "Precondition failed" },
{ 413, "Request entity too large" },
{ 414, "Request-URI too large" },
{ 415, "Unsupported media Type" },
{ 416, "Requested range not satisfiable" },
{ 417, "Expectation failed" },
{ 451, "Parameter not understood" },
{ 452, "Conference not found" },
{ 453, "Not enough bandwidth" },*/
{ 454, "Session not found" },
{ 455, "Method not valid in this State" },
{ 456, "Header field not valid for resource" },
{ 457, "Invalid range" },
/*{ 458, "Read-only parameter" },*/
{ 459, "Aggregate operation not allowed" },
{ 460, "Non-aggregate operation not allowed" },
{ 461, "Unsupported transport" },
/*{ 462, "Destination unreachable" },*/
{ 500, "Internal server error" },
{ 501, "Not implemented" },
/*{ 502, "Bad gateway" },*/
{ 503, "Service unavailable" },
/*{ 504, "Gateway time-out" },*/
{ 505, "Protocol version not supported" },
{ 551, "Option not supported" },
{ 999, "" }
};
static const char psz_fallback_reason[5][16] = {
"Continue", "OK", "Found", "Client error", "Server error"
};
assert( ( i_code >= 100 ) && ( i_code <= 599 ) );
const http_status_info *p = http_reason;
while (i_code < p->i_code)
p++;
if (p->i_code == i_code)
return p->psz_reason;
return psz_fallback_reason[(i_code / 100) - 1];
}
static size_t httpd_HtmlError (char **body, int code, const char *url)
{
const char *errname = httpd_ReasonFromCode (code);
assert (errname != NULL);
int res = asprintf (body,
"<?xml version=\"1.0\" encoding=\"ascii\" ?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
" \"http://www.w3.org/TR/xhtml10/DTD/xhtml10strict.dtd\">\n"
"<html lang=\"en\">\n"
"<head>\n"
"<title>%s</title>\n"
"</head>\n"
"<body>\n"
"<h1>%d %s%s%s%s</h1>\n"
"<hr />\n"
"<a href=\"http://www.videolan.org\">VideoLAN</a>\n"
"</body>\n"
"</html>\n", errname, code, errname,
(url ? " (" : ""), (url ? url : ""), (url ? ")" : ""));
if (res == -1)
{
*body = NULL;
return 0;
}
return (size_t)res;
}
/*****************************************************************************
* High Level Functions: httpd_file_t
*****************************************************************************/
struct httpd_file_t
{
httpd_url_t *url;
char *psz_url;
char *psz_mime;
httpd_file_callback_t pf_fill;
httpd_file_sys_t *p_sys;
};
static int
httpd_FileCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
httpd_message_t *answer, const httpd_message_t *query )
{
httpd_file_t *file = (httpd_file_t*)p_sys;
uint8_t **pp_body, *p_body;
const char *psz_connection;
int *pi_body, i_body;
if( answer == NULL || query == NULL )
{
return VLC_SUCCESS;
}
answer->i_proto = HTTPD_PROTO_HTTP;
answer->i_version= 1;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_status = 200;
httpd_MsgAdd( answer, "Content-type", "%s", file->psz_mime );
httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
if( query->i_type != HTTPD_MSG_HEAD )
{
pp_body = &answer->p_body;
pi_body = &answer->i_body;
}
else
{
/* The file still needs to be executed. */
p_body = NULL;
i_body = 0;
pp_body = &p_body;
pi_body = &i_body;
}
if( query->i_type == HTTPD_MSG_POST )
{
/* msg_Warn not supported */
}
uint8_t *psz_args = query->psz_args;
file->pf_fill( file->p_sys, file, psz_args, pp_body, pi_body );
if( query->i_type == HTTPD_MSG_HEAD && p_body != NULL )
{
free( p_body );
}
/* We respect client request */
psz_connection = httpd_MsgGet( &cl->query, "Connection" );
if( psz_connection != NULL )
{
httpd_MsgAdd( answer, "Connection", "%s", psz_connection );
}
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
return VLC_SUCCESS;
}
httpd_file_t *httpd_FileNew( httpd_host_t *host,
const char *psz_url, const char *psz_mime,
const char *psz_user, const char *psz_password,
httpd_file_callback_t pf_fill,
httpd_file_sys_t *p_sys )
{
httpd_file_t *file = xmalloc( sizeof( httpd_file_t ) );
file->url = httpd_UrlNew( host, psz_url, psz_user, psz_password );
if( file->url == NULL )
{
free( file );
return NULL;
}
file->psz_url = strdup( psz_url );
if( psz_mime && *psz_mime )
{
file->psz_mime = strdup( psz_mime );
}
else
{
file->psz_mime = strdup( vlc_mime_Ext2Mime( psz_url ) );
}
file->pf_fill = pf_fill;
file->p_sys = p_sys;
httpd_UrlCatch( file->url, HTTPD_MSG_HEAD, httpd_FileCallBack,
(httpd_callback_sys_t*)file );
httpd_UrlCatch( file->url, HTTPD_MSG_GET, httpd_FileCallBack,
(httpd_callback_sys_t*)file );
httpd_UrlCatch( file->url, HTTPD_MSG_POST, httpd_FileCallBack,
(httpd_callback_sys_t*)file );
return file;
}
httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
{
httpd_file_sys_t *p_sys = file->p_sys;
httpd_UrlDelete( file->url );
free( file->psz_url );
free( file->psz_mime );
free( file );
return p_sys;
}
/*****************************************************************************
* High Level Functions: httpd_handler_t (for CGIs)
*****************************************************************************/
struct httpd_handler_t
{
httpd_url_t *url;
httpd_handler_callback_t pf_fill;
httpd_handler_sys_t *p_sys;
};
static int
httpd_HandlerCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
httpd_message_t *answer, const httpd_message_t *query )
{
httpd_handler_t *handler = (httpd_handler_t*)p_sys;
char psz_remote_addr[NI_MAXNUMERICHOST];
if( answer == NULL || query == NULL )
{
return VLC_SUCCESS;
}
answer->i_proto = HTTPD_PROTO_NONE;
answer->i_type = HTTPD_MSG_ANSWER;
/* We do it ourselves, thanks */
answer->i_status = 0;
if( httpd_ClientIP( cl, psz_remote_addr, NULL ) == NULL )
*psz_remote_addr = '\0';
uint8_t *psz_args = query->psz_args;
handler->pf_fill( handler->p_sys, handler, query->psz_url, psz_args,
query->i_type, query->p_body, query->i_body,
psz_remote_addr, NULL,
&answer->p_body, &answer->i_body );
if( query->i_type == HTTPD_MSG_HEAD )
{
char *p = (char *)answer->p_body;
/* Looks for end of header (i.e. one empty line) */
while ( (p = strchr( p, '\r' )) != NULL )
{
if( p[1] && p[1] == '\n' && p[2] && p[2] == '\r'
&& p[3] && p[3] == '\n' )
{
break;
}
}
if( p != NULL )
{
p[4] = '\0';
answer->i_body = strlen((char*)answer->p_body) + 1;
answer->p_body = xrealloc( answer->p_body, answer->i_body );
}
}
if( strncmp( (char *)answer->p_body, "HTTP/1.", 7 ) )
{
int i_status, i_headers;
char *psz_headers, *psz_new;
const char *psz_status;
if( !strncmp( (char *)answer->p_body, "Status: ", 8 ) )
{
/* Apache-style */
i_status = strtol( (char *)&answer->p_body[8], &psz_headers, 0 );
if( *psz_headers == '\r' || *psz_headers == '\n' ) psz_headers++;
if( *psz_headers == '\n' ) psz_headers++;
i_headers = answer->i_body - (psz_headers - (char *)answer->p_body);
}
else
{
i_status = 200;
psz_headers = (char *)answer->p_body;
i_headers = answer->i_body;
}
psz_status = httpd_ReasonFromCode( i_status );
answer->i_body = sizeof("HTTP/1.0 xxx \r\n")
+ strlen(psz_status) + i_headers - 1;
psz_new = (char *)xmalloc( answer->i_body + 1);
sprintf( psz_new, "HTTP/1.0 %03d %s\r\n", i_status, psz_status );
memcpy( &psz_new[strlen(psz_new)], psz_headers, i_headers );
free( answer->p_body );
answer->p_body = (uint8_t *)psz_new;
}
return VLC_SUCCESS;
}
httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
const char *psz_user,
const char *psz_password,
httpd_handler_callback_t pf_fill,
httpd_handler_sys_t *p_sys )
{
httpd_handler_t *handler = xmalloc( sizeof( httpd_handler_t ) );
handler->url = httpd_UrlNew( host, psz_url, psz_user, psz_password );
if( handler->url == NULL )
{
free( handler );
return NULL;
}
handler->pf_fill = pf_fill;
handler->p_sys = p_sys;
httpd_UrlCatch( handler->url, HTTPD_MSG_HEAD, httpd_HandlerCallBack,
(httpd_callback_sys_t*)handler );
httpd_UrlCatch( handler->url, HTTPD_MSG_GET, httpd_HandlerCallBack,
(httpd_callback_sys_t*)handler );
httpd_UrlCatch( handler->url, HTTPD_MSG_POST, httpd_HandlerCallBack,
(httpd_callback_sys_t*)handler );
return handler;
}
httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
{
httpd_handler_sys_t *p_sys = handler->p_sys;
httpd_UrlDelete( handler->url );
free( handler );
return p_sys;
}
/*****************************************************************************
* High Level Functions: httpd_redirect_t
*****************************************************************************/
struct httpd_redirect_t
{
httpd_url_t *url;
char *psz_dst;
};
static int httpd_RedirectCallBack( httpd_callback_sys_t *p_sys,
httpd_client_t *cl, httpd_message_t *answer,
const httpd_message_t *query )
{
httpd_redirect_t *rdir = (httpd_redirect_t*)p_sys;
char *p_body;
(void)cl;
if( answer == NULL || query == NULL )
{
return VLC_SUCCESS;
}
answer->i_proto = HTTPD_PROTO_HTTP;
answer->i_version= 1;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_status = 301;
answer->i_body = httpd_HtmlError (&p_body, 301, rdir->psz_dst);
answer->p_body = (unsigned char *)p_body;
/* XXX check if it's ok or we need to set an absolute url */
httpd_MsgAdd( answer, "Location", "%s", rdir->psz_dst );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
return VLC_SUCCESS;
}
httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
const char *psz_url_src )
{
httpd_redirect_t *rdir = xmalloc( sizeof( httpd_redirect_t ) );
rdir->url = httpd_UrlNew( host, psz_url_src, NULL, NULL );
if( rdir->url == NULL )
{
free( rdir );
return NULL;
}
rdir->psz_dst = strdup( psz_url_dst );
/* Redirect apply for all HTTP request and RTSP DESCRIBE resquest */
httpd_UrlCatch( rdir->url, HTTPD_MSG_HEAD, httpd_RedirectCallBack,
(httpd_callback_sys_t*)rdir );
httpd_UrlCatch( rdir->url, HTTPD_MSG_GET, httpd_RedirectCallBack,
(httpd_callback_sys_t*)rdir );
httpd_UrlCatch( rdir->url, HTTPD_MSG_POST, httpd_RedirectCallBack,
(httpd_callback_sys_t*)rdir );
httpd_UrlCatch( rdir->url, HTTPD_MSG_DESCRIBE, httpd_RedirectCallBack,
(httpd_callback_sys_t*)rdir );
return rdir;
}
void httpd_RedirectDelete( httpd_redirect_t *rdir )
{
httpd_UrlDelete( rdir->url );
free( rdir->psz_dst );
free( rdir );
}
/*****************************************************************************
* High Level Funtions: httpd_stream_t
*****************************************************************************/
struct httpd_stream_t
{
vlc_mutex_t lock;
httpd_url_t *url;
char *psz_mime;
/* Header to send as first packet */
uint8_t *p_header;
int i_header;
/* Some muxes, in particular the avformat mux, can mark given blocks
* as keyframes, to ensure that the stream starts with one.
* (This is particularly important for WebM streaming to certain
* browsers.) Store if we've ever seen any such keyframe blocks,
* and if so, the byte position of the start of the last one. */
bool b_has_keyframes;
int64_t i_last_keyframe_seen_pos;
/* circular buffer */
int i_buffer_size; /* buffer size, can't be reallocated smaller */
uint8_t *p_buffer; /* buffer */
int64_t i_buffer_pos; /* absolute position from begining */
int64_t i_buffer_last_pos; /* a new connection will start with that */
/* custom headers */
size_t i_http_headers;
httpd_header * p_http_headers;
};
static int httpd_StreamCallBack( httpd_callback_sys_t *p_sys,
httpd_client_t *cl, httpd_message_t *answer,
const httpd_message_t *query )
{
httpd_stream_t *stream = (httpd_stream_t*)p_sys;
if( answer == NULL || query == NULL || cl == NULL )
{
return VLC_SUCCESS;
}
if( answer->i_body_offset > 0 )
{
int64_t i_write;
int i_pos;
#if 0
fprintf( stderr, "httpd_StreamCallBack i_body_offset=%lld\n",
answer->i_body_offset );
#endif
if( answer->i_body_offset >= stream->i_buffer_pos )
{
/* fprintf( stderr, "httpd_StreamCallBack: no data\n" ); */
return VLC_EGENERIC; /* wait, no data available */
}
if( cl->i_keyframe_wait_to_pass >= 0 )
{
if( stream->i_last_keyframe_seen_pos <= cl->i_keyframe_wait_to_pass )
/* still waiting for the next keyframe */
return VLC_EGENERIC;
/* seek to the new keyframe */
answer->i_body_offset = stream->i_last_keyframe_seen_pos;
cl->i_keyframe_wait_to_pass = -1;
}
if( answer->i_body_offset + stream->i_buffer_size <
stream->i_buffer_pos )
{
/* this client isn't fast enough */
#if 0
fprintf( stderr, "fixing i_body_offset (old=%lld new=%lld)\n",
answer->i_body_offset, stream->i_buffer_last_pos );
#endif
answer->i_body_offset = stream->i_buffer_last_pos;
}
i_pos = answer->i_body_offset % stream->i_buffer_size;
i_write = stream->i_buffer_pos - answer->i_body_offset;
if( i_write > HTTPD_CL_BUFSIZE )
{
i_write = HTTPD_CL_BUFSIZE;
}
else if( i_write <= 0 )
{
return VLC_EGENERIC; /* wait, no data available */
}
/* Don't go past the end of the circular buffer */
i_write = __MIN( i_write, stream->i_buffer_size - i_pos );
/* using HTTPD_MSG_ANSWER -> data available */
answer->i_proto = HTTPD_PROTO_HTTP;
answer->i_version= 0;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_body = i_write;
answer->p_body = xmalloc( i_write );
memcpy( answer->p_body, &stream->p_buffer[i_pos], i_write );
answer->i_body_offset += i_write;
return VLC_SUCCESS;
}
else
{
answer->i_proto = HTTPD_PROTO_HTTP;
answer->i_version= 0;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_status = 200;
bool b_has_content_type = false;
bool b_has_cache_control = false;
vlc_mutex_lock( &stream->lock );
for( size_t i = 0; i < stream->i_http_headers; i++ )
{
if( strncasecmp( stream->p_http_headers[i].name, "Content-Length", 14 ) )
{
httpd_MsgAdd( answer, stream->p_http_headers[i].name,
stream->p_http_headers[i].value );
if( !strncasecmp( stream->p_http_headers[i].name, "Content-Type", 12 ) )
b_has_content_type = true;
else if( !strncasecmp( stream->p_http_headers[i].name, "Cache-Control", 13 ) )
b_has_cache_control = true;
}
}
vlc_mutex_unlock( &stream->lock );
if( query->i_type != HTTPD_MSG_HEAD )
{
cl->b_stream_mode = true;
vlc_mutex_lock( &stream->lock );
/* Send the header */
if( stream->i_header > 0 )
{
answer->i_body = stream->i_header;
answer->p_body = xmalloc( stream->i_header );
memcpy( answer->p_body, stream->p_header, stream->i_header );
}
answer->i_body_offset = stream->i_buffer_last_pos;
if( stream->b_has_keyframes )
cl->i_keyframe_wait_to_pass = stream->i_last_keyframe_seen_pos;
else
cl->i_keyframe_wait_to_pass = -1;
vlc_mutex_unlock( &stream->lock );
}
else
{
httpd_MsgAdd( answer, "Content-Length", "0" );
answer->i_body_offset = 0;
}
/* FIXME: move to http access_output */
if( !strcmp( stream->psz_mime, "video/x-ms-asf-stream" ) )
{
bool b_xplaystream = false;
int i;
httpd_MsgAdd( answer, "Content-type", "application/octet-stream" );
httpd_MsgAdd( answer, "Server", "Cougar 4.1.0.3921" );
httpd_MsgAdd( answer, "Pragma", "no-cache" );
httpd_MsgAdd( answer, "Pragma", "client-id=%lu",
vlc_mrand48()&0x7fff );
httpd_MsgAdd( answer, "Pragma", "features=\"broadcast\"" );
/* Check if there is a xPlayStrm=1 */
for( i = 0; i < query->i_headers; i++ )
{
if( !strcasecmp( query->p_headers[i].name, "Pragma" ) &&
strstr( query->p_headers[i].value, "xPlayStrm=1" ) )
{
b_xplaystream = true;
}
}
if( !b_xplaystream )
{
answer->i_body_offset = 0;
}
}
else if( !b_has_content_type )
{
httpd_MsgAdd( answer, "Content-type", stream->psz_mime );
}
if( !b_has_cache_control )
httpd_MsgAdd( answer, "Cache-Control", "no-cache" );
return VLC_SUCCESS;
}
}
httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
const char *psz_url, const char *psz_mime,
const char *psz_user, const char *psz_password )
{
httpd_stream_t *stream = xmalloc( sizeof( httpd_stream_t ) );
stream->url = httpd_UrlNew( host, psz_url, psz_user, psz_password );
if( stream->url == NULL )
{
free( stream );
return NULL;
}
vlc_mutex_init( &stream->lock );
if( psz_mime && *psz_mime )
{
stream->psz_mime = strdup( psz_mime );
}
else
{
stream->psz_mime = strdup( vlc_mime_Ext2Mime( psz_url ) );
}
stream->i_header = 0;
stream->p_header = NULL;
stream->i_buffer_size = 5000000; /* 5 Mo per stream */
stream->p_buffer = xmalloc( stream->i_buffer_size );
/* We set to 1 to make life simpler
* (this way i_body_offset can never be 0) */
stream->i_buffer_pos = 1;
stream->i_buffer_last_pos = 1;
stream->b_has_keyframes = false;
stream->i_last_keyframe_seen_pos = 0;
stream->i_http_headers = 0;
stream->p_http_headers = NULL;
httpd_UrlCatch( stream->url, HTTPD_MSG_HEAD, httpd_StreamCallBack,
(httpd_callback_sys_t*)stream );
httpd_UrlCatch( stream->url, HTTPD_MSG_GET, httpd_StreamCallBack,
(httpd_callback_sys_t*)stream );
httpd_UrlCatch( stream->url, HTTPD_MSG_POST, httpd_StreamCallBack,
(httpd_callback_sys_t*)stream );
return stream;
}
int httpd_StreamHeader( httpd_stream_t *stream, uint8_t *p_data, int i_data )
{
vlc_mutex_lock( &stream->lock );
free( stream->p_header );
stream->p_header = NULL;
stream->i_header = i_data;
if( i_data > 0 )
{
stream->p_header = xmalloc( i_data );
memcpy( stream->p_header, p_data, i_data );
}
vlc_mutex_unlock( &stream->lock );
return VLC_SUCCESS;
}
static void httpd_AppendData( httpd_stream_t *stream, uint8_t *p_data, int i_data )
{
int i_pos = stream->i_buffer_pos % stream->i_buffer_size;
int i_count = i_data;
while( i_count > 0)
{
int i_copy;
i_copy = __MIN( i_count, stream->i_buffer_size - i_pos );
/* Ok, we can't go past the end of our buffer */
memcpy( &stream->p_buffer[i_pos], p_data, i_copy );
i_pos = ( i_pos + i_copy ) % stream->i_buffer_size;
i_count -= i_copy;
p_data += i_copy;
}
stream->i_buffer_pos += i_data;
}
int httpd_StreamSend( httpd_stream_t *stream, const block_t *p_block )
{
if( p_block == NULL || p_block->p_buffer == NULL )
{
return VLC_SUCCESS;
}
vlc_mutex_lock( &stream->lock );
/* save this pointer (to be used by new connection) */
stream->i_buffer_last_pos = stream->i_buffer_pos;
if( p_block->i_flags & BLOCK_FLAG_TYPE_I )
{
stream->b_has_keyframes = true;
stream->i_last_keyframe_seen_pos = stream->i_buffer_pos;
}
httpd_AppendData( stream, p_block->p_buffer, p_block->i_buffer );
vlc_mutex_unlock( &stream->lock );
return VLC_SUCCESS;
}
void httpd_StreamDelete( httpd_stream_t *stream )
{
httpd_UrlDelete( stream->url );
for( size_t i = 0; i < stream->i_http_headers; i++ )
{
free( stream->p_http_headers[i].name );
free( stream->p_http_headers[i].value );
}
free( stream->p_http_headers );
vlc_mutex_destroy( &stream->lock );
free( stream->psz_mime );
free( stream->p_header );
free( stream->p_buffer );
free( stream );
}
/*****************************************************************************
* Low level
*****************************************************************************/
static void* httpd_HostThread( void * );
static httpd_host_t *httpd_HostCreate( vlc_object_t *, const char *,
const char *, vlc_tls_creds_t * );
/* create a new host */
httpd_host_t *vlc_http_HostNew( vlc_object_t *p_this )
{
return httpd_HostCreate( p_this, "http-host", "http-port", NULL );
}
httpd_host_t *vlc_https_HostNew( vlc_object_t *obj )
{
char *cert = var_InheritString( obj, "http-cert" );
if( cert == NULL )
{
msg_Err( obj, "HTTP/TLS certificate not specified!" );
return NULL;
}
char *key = var_InheritString( obj, "http-key" );
vlc_tls_creds_t *tls = vlc_tls_ServerCreate( obj, cert, key );
if( tls == NULL )
{
msg_Err( obj, "HTTP/TLS certificate error (%s and %s)",
cert, (key != NULL) ? key : cert );
free( key );
free( cert );
return NULL;
}
free( key );
free( cert );
char *ca = var_InheritString( obj, "http-ca" );
if( ca != NULL )
{
if( vlc_tls_ServerAddCA( tls, ca ) )
{
msg_Err( obj, "HTTP/TLS CA error (%s)", ca );
free( ca );
goto error;
}
free( ca );
}
char *crl = var_InheritString( obj, "http-crl" );
if( crl != NULL )
{
if( vlc_tls_ServerAddCRL( tls, crl ) )
{
msg_Err( obj, "TLS CRL error (%s)", crl );
free( crl );
goto error;
}
free( crl );
}
return httpd_HostCreate( obj, "http-host", "https-port", tls );
error:
vlc_tls_Delete( tls );
return NULL;
}
httpd_host_t *vlc_rtsp_HostNew( vlc_object_t *p_this )
{
return httpd_HostCreate( p_this, "rtsp-host", "rtsp-port", NULL );
}
static struct httpd
{
vlc_mutex_t mutex;
httpd_host_t **host;
int i_host;
} httpd = { VLC_STATIC_MUTEX, NULL, 0 };
static httpd_host_t *httpd_HostCreate( vlc_object_t *p_this,
const char *hostvar,
const char *portvar,
vlc_tls_creds_t *p_tls )
{
httpd_host_t *host;
char *hostname = var_InheritString( p_this, hostvar );
unsigned port = var_InheritInteger( p_this, portvar );
vlc_url_t url;
vlc_UrlParse( &url, hostname, 0 );
free( hostname );
if( url.i_port != 0 )
{
msg_Err( p_this, "Ignoring port %d (using %d)", url.i_port, port );
msg_Info( p_this, "Specify port %d separately with the "
"%s option instead.", url.i_port, portvar );
}
/* to be sure to avoid multiple creation */
vlc_mutex_lock( &httpd.mutex );
/* verify if it already exist */
for( int i = 0; i < httpd.i_host; i++ )
{
host = httpd.host[i];
/* cannot mix TLS and non-TLS hosts */
if( host->port != port
|| (host->p_tls != NULL) != (p_tls != NULL) )
continue;
/* Increase existing matching host reference count.
* The reference count is written under both the global httpd and the
* host lock. It is read with either or both locks held. The global
* lock is always acquired first. */
vlc_mutex_lock( &host->lock );
host->i_ref++;
vlc_mutex_unlock( &host->lock );
vlc_mutex_unlock( &httpd.mutex );
vlc_UrlClean( &url );
vlc_tls_Delete( p_tls );
return host;
}
/* create the new host */
host = (httpd_host_t *)vlc_custom_create( p_this, sizeof (*host),
"http host" );
if (host == NULL)
goto error;
vlc_mutex_init( &host->lock );
vlc_cond_init( &host->wait );
host->i_ref = 1;
host->fds = net_ListenTCP( p_this, url.psz_host, port );
if( host->fds == NULL )
{
msg_Err( p_this, "cannot create socket(s) for HTTP host" );
goto error;
}
for (host->nfd = 0; host->fds[host->nfd] != -1; host->nfd++);
if( vlc_object_waitpipe( VLC_OBJECT( host ) ) == -1 )
{
msg_Err( host, "signaling pipe error: %s", vlc_strerror_c(errno) );
goto error;
}
host->port = port;
host->i_url = 0;
host->url = NULL;
host->i_client = 0;
host->client = NULL;
host->p_tls = p_tls;
/* create the thread */
if( vlc_clone( &host->thread, httpd_HostThread, host,
VLC_THREAD_PRIORITY_LOW ) )
{
msg_Err( p_this, "cannot spawn http host thread" );
goto error;
}
/* now add it to httpd */
TAB_APPEND( httpd.i_host, httpd.host, host );
vlc_mutex_unlock( &httpd.mutex );
vlc_UrlClean( &url );
return host;
error:
vlc_mutex_unlock( &httpd.mutex );
if( host != NULL )
{
net_ListenClose( host->fds );
vlc_cond_destroy( &host->wait );
vlc_mutex_destroy( &host->lock );
vlc_object_release( host );
}
vlc_UrlClean( &url );
vlc_tls_Delete( p_tls );
return NULL;
}
/* delete a host */
void httpd_HostDelete( httpd_host_t *host )
{
int i;
bool delete = false;
vlc_mutex_lock( &httpd.mutex );
vlc_mutex_lock( &host->lock );
host->i_ref--;
if( host->i_ref == 0 )
delete = true;
vlc_mutex_unlock( &host->lock );
if( !delete )
{
/* still used */
vlc_mutex_unlock( &httpd.mutex );
msg_Dbg( host, "httpd_HostDelete: host still in use" );
return;
}
TAB_REMOVE( httpd.i_host, httpd.host, host );
vlc_cancel( host->thread );
vlc_join( host->thread, NULL );
msg_Dbg( host, "HTTP host removed" );
for( i = 0; i < host->i_url; i++ )
{
msg_Err( host, "url still registered: %s", host->url[i]->psz_url );
}
for( i = 0; i < host->i_client; i++ )
{
httpd_client_t *cl = host->client[i];
msg_Warn( host, "client still connected" );
httpd_ClientClean( cl );
TAB_REMOVE( host->i_client, host->client, cl );
free( cl );
i--;
/* TODO */
}
vlc_tls_Delete( host->p_tls );
net_ListenClose( host->fds );
vlc_cond_destroy( &host->wait );
vlc_mutex_destroy( &host->lock );
vlc_object_release( host );
vlc_mutex_unlock( &httpd.mutex );
}
/* register a new url */
httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
const char *psz_user, const char *psz_password )
{
httpd_url_t *url;
assert( psz_url != NULL );
vlc_mutex_lock( &host->lock );
for( int i = 0; i < host->i_url; i++ )
{
if( !strcmp( psz_url, host->url[i]->psz_url ) )
{
msg_Warn( host,
"cannot add '%s' (url already defined)", psz_url );
vlc_mutex_unlock( &host->lock );
return NULL;
}
}
url = xmalloc( sizeof( httpd_url_t ) );
url->host = host;
vlc_mutex_init( &url->lock );
url->psz_url = strdup( psz_url );
url->psz_user = strdup( psz_user ? psz_user : "" );
url->psz_password = strdup( psz_password ? psz_password : "" );
for( int i = 0; i < HTTPD_MSG_MAX; i++ )
{
url->catch[i].cb = NULL;
url->catch[i].p_sys = NULL;
}
TAB_APPEND( host->i_url, host->url, url );
vlc_cond_signal( &host->wait );
vlc_mutex_unlock( &host->lock );
return url;
}
/* register callback on a url */
int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
httpd_callback_sys_t *p_sys )
{
vlc_mutex_lock( &url->lock );
url->catch[i_msg].cb = cb;
url->catch[i_msg].p_sys= p_sys;
vlc_mutex_unlock( &url->lock );
return VLC_SUCCESS;
}
/* delete a url */
void httpd_UrlDelete( httpd_url_t *url )
{
httpd_host_t *host = url->host;
int i;
vlc_mutex_lock( &host->lock );
TAB_REMOVE( host->i_url, host->url, url );
vlc_mutex_destroy( &url->lock );
free( url->psz_url );
free( url->psz_user );
free( url->psz_password );
for( i = 0; i < host->i_client; i++ )
{
httpd_client_t *client = host->client[i];
if( client->url == url )
{
/* TODO complete it */
msg_Warn( host, "force closing connections" );
httpd_ClientClean( client );
TAB_REMOVE( host->i_client, host->client, client );
free( client );
i--;
}
}
free( url );
vlc_mutex_unlock( &host->lock );
}
static void httpd_MsgInit( httpd_message_t *msg )
{
msg->cl = NULL;
msg->i_type = HTTPD_MSG_NONE;
msg->i_proto = HTTPD_PROTO_NONE;
msg->i_version = -1; /* FIXME */
msg->i_status = 0;
msg->psz_url = NULL;
msg->psz_args = NULL;
msg->i_headers = 0;
msg->p_headers = NULL;
msg->i_body_offset = 0;
msg->i_body = 0;
msg->p_body = NULL;
}
static void httpd_MsgClean( httpd_message_t *msg )
{
free( msg->psz_url );
free( msg->psz_args );
for( size_t i = 0; i < msg->i_headers; i++ )
{
free( msg->p_headers[i].name );
free( msg->p_headers[i].value );
}
free( msg->p_headers );
free( msg->p_body );
httpd_MsgInit( msg );
}
const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
{
for( size_t i = 0; i < msg->i_headers; i++ )
{
if( !strcasecmp( msg->p_headers[i].name, name ))
{
return msg->p_headers[i].value;
}
}
return NULL;
}
void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
{
va_list args;
char *value = NULL;
va_start( args, psz_value );
if( us_vasprintf( &value, psz_value, args ) == -1 )
value = NULL;
va_end( args );
if( value == NULL )
return;
name = strdup( name );
if( name == NULL )
{
free( value );
return;
}
httpd_header * p_tmp = realloc( msg->p_headers, sizeof(httpd_header) * (msg->i_headers + 1));
if(p_tmp)
{
msg->p_headers = p_tmp;
msg->p_headers[msg->i_headers].name = name;
msg->p_headers[msg->i_headers].value = value;
msg->i_headers++;
}
else
{
free(name);
free(value);
}
}
static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
{
cl->i_state = HTTPD_CLIENT_RECEIVING;
cl->i_activity_date = now;
cl->i_activity_timeout = INT64_C(10000000);
cl->i_buffer_size = HTTPD_CL_BUFSIZE;
cl->i_buffer = 0;
cl->p_buffer = xmalloc( cl->i_buffer_size );
cl->i_keyframe_wait_to_pass = -1;
cl->b_stream_mode = false;
httpd_MsgInit( &cl->query );
httpd_MsgInit( &cl->answer );
}
char* httpd_ClientIP( const httpd_client_t *cl, char *ip, int *port )
{
return net_GetPeerAddress( cl->fd, ip, port ) ? NULL : ip;
}
char* httpd_ServerIP( const httpd_client_t *cl, char *ip, int *port )
{
return net_GetSockAddress( cl->fd, ip, port ) ? NULL : ip;
}
static void httpd_ClientClean( httpd_client_t *cl )
{
if( cl->fd >= 0 )
{
if( cl->p_tls != NULL )
vlc_tls_SessionDelete( cl->p_tls );
net_Close( cl->fd );
cl->fd = -1;
}
httpd_MsgClean( &cl->answer );
httpd_MsgClean( &cl->query );
free( cl->p_buffer );
cl->p_buffer = NULL;
}
static httpd_client_t *httpd_ClientNew( int fd, vlc_tls_t *p_tls, mtime_t now )
{
httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
if( !cl ) return NULL;
cl->i_ref = 0;
cl->fd = fd;
cl->url = NULL;
cl->p_tls = p_tls;
httpd_ClientInit( cl, now );
if( p_tls != NULL )
cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
return cl;
}
static
ssize_t httpd_NetRecv (httpd_client_t *cl, uint8_t *p, size_t i_len)
{
vlc_tls_t *p_tls;
ssize_t val;
p_tls = cl->p_tls;
do
val = p_tls ? tls_Recv (p_tls, p, i_len)
: recv (cl->fd, p, i_len, 0);
while (val == -1 && errno == EINTR);
return val;
}
static
ssize_t httpd_NetSend (httpd_client_t *cl, const uint8_t *p, size_t i_len)
{
vlc_tls_t *p_tls;
ssize_t val;
p_tls = cl->p_tls;
do
val = p_tls ? tls_Send( p_tls, p, i_len )
: send (cl->fd, p, i_len, 0);
while (val == -1 && errno == EINTR);
return val;
}
static const struct
{
const char name[16];
int i_type;
int i_proto;
}
msg_type[] =
{
{ "OPTIONS", HTTPD_MSG_OPTIONS, HTTPD_PROTO_RTSP },
{ "DESCRIBE", HTTPD_MSG_DESCRIBE, HTTPD_PROTO_RTSP },
{ "SETUP", HTTPD_MSG_SETUP, HTTPD_PROTO_RTSP },
{ "PLAY", HTTPD_MSG_PLAY, HTTPD_PROTO_RTSP },
{ "PAUSE", HTTPD_MSG_PAUSE, HTTPD_PROTO_RTSP },
{ "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
{ "TEARDOWN", HTTPD_MSG_TEARDOWN, HTTPD_PROTO_RTSP },
{ "GET", HTTPD_MSG_GET, HTTPD_PROTO_HTTP },
{ "HEAD", HTTPD_MSG_HEAD, HTTPD_PROTO_HTTP },
{ "POST", HTTPD_MSG_POST, HTTPD_PROTO_HTTP },
{ "", HTTPD_MSG_NONE, HTTPD_PROTO_NONE }
};
static void httpd_ClientRecv( httpd_client_t *cl )
{
int i_len;
/* ignore leading whites */
if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
( cl->i_buffer == 0 ) )
{
unsigned char c;
i_len = httpd_NetRecv( cl, &c, 1 );
if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
{
cl->p_buffer[0] = c;
cl->i_buffer++;
}
}
else
if( cl->query.i_proto == HTTPD_PROTO_NONE )
{
/* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
7 - cl->i_buffer );
if( i_len > 0 )
{
cl->i_buffer += i_len;
}
/* The smallest legal request is 7 bytes ("GET /\r\n"),
* this is the maximum we can ask at this point. */
if( cl->i_buffer >= 7 )
{
if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
{
cl->query.i_proto = HTTPD_PROTO_HTTP;
cl->query.i_type = HTTPD_MSG_ANSWER;
}
else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
{
cl->query.i_proto = HTTPD_PROTO_RTSP;
cl->query.i_type = HTTPD_MSG_ANSWER;
}
else
{
/* We need the full request line to determine the protocol. */
cl->query.i_proto = HTTPD_PROTO_HTTP0;
cl->query.i_type = HTTPD_MSG_NONE;
}
}
}
else if( cl->query.i_body > 0 )
{
/* we are reading the body of a request or a channel */
i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
cl->query.i_body - cl->i_buffer );
if( i_len > 0 )
{
cl->i_buffer += i_len;
}
if( cl->i_buffer >= cl->query.i_body )
{
cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
}
}
else
{
/* we are reading a header -> char by char */
for( ;; )
{
if( cl->i_buffer == cl->i_buffer_size )
{
uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
if( newbuf == NULL )
{
i_len = 0;
break;
}
cl->p_buffer = newbuf;
cl->i_buffer_size += 1024;
}
i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
if( i_len <= 0 )
{
break;
}
cl->i_buffer++;
if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
&& ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
{
/* Request line is now complete */
const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
size_t len;
assert( cl->query.i_type == HTTPD_MSG_NONE );
if( p == NULL ) /* no URI: evil guy */
{
i_len = 0; /* drop connection */
break;
}
do
p++; /* skips extra spaces */
while( *p == ' ' );
p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
{
i_len = 0; /* not supported currently -> drop */
break;
}
do
p++; /* skips extra spaces ever again */
while( *p == ' ' );
len = ((char *)cl->p_buffer) + cl->i_buffer - p;
if( len < 7 ) /* foreign protocol */
i_len = 0; /* I don't understand -> drop */
else
if( memcmp( p, "HTTP/1.", 7 ) == 0 )
{
cl->query.i_proto = HTTPD_PROTO_HTTP;
cl->query.i_version = atoi( p + 7 );
}
else
if( memcmp( p, "RTSP/1.", 7 ) == 0 )
{
cl->query.i_proto = HTTPD_PROTO_RTSP;
cl->query.i_version = atoi( p + 7 );
}
else
if( memcmp( p, "HTTP/", 5 ) == 0 )
{
const uint8_t sorry[] =
"HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
i_len = 0; /* drop */
}
else
if( memcmp( p, "RTSP/", 5 ) == 0 )
{
const uint8_t sorry[] =
"RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
i_len = 0; /* drop */
}
else /* yet another foreign protocol */
i_len = 0;
if( i_len == 0 )
break;
}
if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
{
char *p;
/* we have finished the header so parse it and set i_body */
cl->p_buffer[cl->i_buffer] = '\0';
if( cl->query.i_type == HTTPD_MSG_ANSWER )
{
/* FIXME:
* assume strlen( "HTTP/1.x" ) = 8
*/
cl->query.i_status =
strtol( (char *)&cl->p_buffer[8],
&p, 0 );
while( *p == ' ' )
p++;
}
else
{
unsigned i;
p = NULL;
cl->query.i_type = HTTPD_MSG_NONE;
/*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
for( i = 0; msg_type[i].name[0]; i++ )
{
if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
strlen( msg_type[i].name ) ) )
{
p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
cl->query.i_type = msg_type[i].i_type;
if( cl->query.i_proto != msg_type[i].i_proto )
{
p = NULL;
cl->query.i_proto = HTTPD_PROTO_NONE;
cl->query.i_type = HTTPD_MSG_NONE;
}
break;
}
}
if( p == NULL )
{
if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
{
cl->query.i_proto = HTTPD_PROTO_HTTP;
}
else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
{
cl->query.i_proto = HTTPD_PROTO_RTSP;
}
}
else
{
char *p2;
char *p3;
while( *p == ' ' )
{
p++;
}
p2 = strchr( p, ' ' );
if( p2 )
{
*p2++ = '\0';
}
if( !strncasecmp( p, ( cl->query.i_proto
== HTTPD_PROTO_HTTP ) ? "http:" : "rtsp:", 5 ) )
{ /* Skip hier-part of URL (if present) */
p += 5;
if( !strncmp( p, "//", 2 ) ) /* skip authority */
{ /* see RFC3986 §3.2 */
p += 2;
p += strcspn( p, "/?#" );
}
}
else
if( !strncasecmp( p, ( cl->query.i_proto
== HTTPD_PROTO_HTTP ) ? "https:" : "rtsps:", 6 ) )
{ /* Skip hier-part of URL (if present) */
p += 6;
if( !strncmp( p, "//", 2 ) ) /* skip authority */
{ /* see RFC3986 §3.2 */
p += 2;
p += strcspn( p, "/?#" );
}
}
cl->query.psz_url = strdup( p );
if( ( p3 = strchr( cl->query.psz_url, '?' ) ) )
{
*p3++ = '\0';
cl->query.psz_args = (uint8_t *)strdup( p3 );
}
p = p2;
}
}
if( p )
{
p = strchr( p, '\n' );
}
if( p )
{
while( *p == '\n' || *p == '\r' )
{
p++;
}
while( p && *p != '\0' )
{
char *line = p;
char *eol = p = strchr( p, '\n' );
char *colon;
while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
{
*eol-- = '\0';
}
if( ( colon = strchr( line, ':' ) ) )
{
*colon++ = '\0';
while( *colon == ' ' )
{
colon++;
}
httpd_MsgAdd( &cl->query, line, colon );
if( !strcasecmp( line, "Content-Length" ) )
{
cl->query.i_body = atol( colon );
}
}
if( p )
{
p++;
while( *p == '\n' || *p == '\r' )
{
p++;
}
}
}
}
if( cl->query.i_body > 0 )
{
/* TODO Mhh, handle the case where the client only
* sends a request and closes the connection to
* mark the end of the body (probably only RTSP) */
cl->query.p_body = malloc( cl->query.i_body );
cl->i_buffer = 0;
if ( cl->query.p_body == NULL ) {
switch (cl->query.i_proto) {
case HTTPD_PROTO_HTTP: {
const uint8_t sorry[] =
"HTTP/1.1 413 Request Entity Too Large\r\n\r\n";
httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
break;
}
case HTTPD_PROTO_RTSP: {
const uint8_t sorry[] =
"RTSP/1.0 413 Request Entity Too Large\r\n\r\n";
httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
break;
}
default:
assert( 0 );
}
i_len = 0; /* drop */
}
break;
}
else
{
cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
}
}
}
}
/* check if the client is to be set to dead */
#if defined( _WIN32 )
if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
#else
if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
#endif
{
if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
{
/* connection closed -> end of data */
if( cl->query.i_body > 0 )
{
cl->query.i_body = cl->i_buffer;
}
cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
}
else
{
cl->i_state = HTTPD_CLIENT_DEAD;
}
}
/* XXX: for QT I have to disable timeout. Try to find why */
if( cl->query.i_proto == HTTPD_PROTO_RTSP )
cl->i_activity_timeout = 0;
#if 0 /* Debugging only */
if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
{
int i;
fprintf( stderr, "received new request\n" );
fprintf( stderr, " - proto=%s\n",
cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
fprintf( stderr, " - version=%d\n", cl->query.i_version );
fprintf( stderr, " - msg=%d\n", cl->query.i_type );
if( cl->query.i_type == HTTPD_MSG_ANSWER )
{
fprintf( stderr, " - answer=%d '%s'\n", cl->query.i_status,
cl->query.psz_status );
}
else if( cl->query.i_type != HTTPD_MSG_NONE )
{
fprintf( stderr, " - url=%s\n", cl->query.psz_url );
}
for( i = 0; i < cl->query.i_name; i++ )
{
fprintf( stderr, " - option name='%s' value='%s'\n",
cl->query.name[i], cl->query.value[i] );
}
}
#endif
}
static void httpd_ClientSend( httpd_client_t *cl )
{
int i;
int i_len;
if( cl->i_buffer < 0 )
{
/* We need to create the header */
int i_size = 0;
char *p;
const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
for( i = 0; i < cl->answer.i_headers; i++ )
{
i_size += strlen( cl->answer.p_headers[i].name ) + 2 +
strlen( cl->answer.p_headers[i].value ) + 2;
}
if( cl->i_buffer_size < i_size )
{
cl->i_buffer_size = i_size;
free( cl->p_buffer );
cl->p_buffer = xmalloc( i_size );
}
p = (char *)cl->p_buffer;
p += sprintf( p, "%s.%u %d %s\r\n",
cl->answer.i_proto == HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
cl->answer.i_version,
cl->answer.i_status, psz_status );
for( i = 0; i < cl->answer.i_headers; i++ )
{
p += sprintf( p, "%s: %s\r\n", cl->answer.p_headers[i].name,
cl->answer.p_headers[i].value );
}
p += sprintf( p, "\r\n" );
cl->i_buffer = 0;
cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
/*fprintf( stderr, "sending answer\n" );
fprintf( stderr, "%s", cl->p_buffer );*/
}
i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
cl->i_buffer_size - cl->i_buffer );
if( i_len >= 0 )
{
cl->i_buffer += i_len;
if( cl->i_buffer >= cl->i_buffer_size )
{
if( cl->answer.i_body == 0 && cl->answer.i_body_offset > 0 )
{
/* catch more body data */
int i_msg = cl->query.i_type;
int64_t i_offset = cl->answer.i_body_offset;
httpd_MsgClean( &cl->answer );
cl->answer.i_body_offset = i_offset;
cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
&cl->answer, &cl->query );
}
if( cl->answer.i_body > 0 )
{
/* send the body data */
free( cl->p_buffer );
cl->p_buffer = cl->answer.p_body;
cl->i_buffer_size = cl->answer.i_body;
cl->i_buffer = 0;
cl->answer.i_body = 0;
cl->answer.p_body = NULL;
}
else
{
/* send finished */
cl->i_state = HTTPD_CLIENT_SEND_DONE;
}
}
}
else
{
#if defined( _WIN32 )
if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
#else
if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
#endif
{
/* error */
cl->i_state = HTTPD_CLIENT_DEAD;
}
}
}
static void httpd_ClientTlsHandshake( httpd_client_t *cl )
{
switch( vlc_tls_SessionHandshake( cl->p_tls, NULL, NULL ) ) {
case -1: cl->i_state = HTTPD_CLIENT_DEAD; break;
case 0: cl->i_state = HTTPD_CLIENT_RECEIVING; break;
case 1: cl->i_state = HTTPD_CLIENT_TLS_HS_IN; break;
case 2: cl->i_state = HTTPD_CLIENT_TLS_HS_OUT; break;
}
}
static bool httpdAuthOk(const char *user, const char *pass, const char *b64)
{
if (!*user && !*pass)
return true;
if (!b64)
return false;
if (strncasecmp(b64, "BASIC", 5))
return false;
b64 += 5;
while (*b64 == ' ')
b64++;
char *given_user = vlc_b64_decode(b64);
if (!given_user)
return false;
char *given_pass = NULL;
given_pass = strchr (given_user, ':');
if (!given_pass)
goto auth_failed;
*given_pass++ = '\0';
if (strcmp (given_user, user))
goto auth_failed;
if (strcmp (given_pass, pass))
goto auth_failed;
free( given_user );
return true;
auth_failed:
free( given_user );
return false;
}
static void httpdLoop(httpd_host_t *host)
{
struct pollfd ufd[host->nfd + host->i_client];
unsigned nfd;
for( nfd = 0; nfd < host->nfd; nfd++ )
{
ufd[nfd].fd = host->fds[nfd];
ufd[nfd].events = POLLIN;
ufd[nfd].revents = 0;
}
/* add all socket that should be read/write and close dead connection */
while( host->i_url <= 0 )
{
mutex_cleanup_push( &host->lock );
vlc_cond_wait( &host->wait, &host->lock );
vlc_cleanup_pop();
}
mtime_t now = mdate();
bool b_low_delay = false;
int canc = vlc_savecancel();
for(int i_client = 0; i_client < host->i_client; i_client++ )
{
int64_t i_offset;
httpd_client_t *cl = host->client[i_client];
if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
( cl->i_state == HTTPD_CLIENT_DEAD ||
( cl->i_activity_timeout > 0 &&
cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
{
httpd_ClientClean( cl );
TAB_REMOVE( host->i_client, host->client, cl );
free( cl );
i_client--;
continue;
}
struct pollfd *pufd = ufd + nfd;
assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
pufd->fd = cl->fd;
pufd->events = pufd->revents = 0;
switch (cl->i_state) {
case HTTPD_CLIENT_RECEIVING:
case HTTPD_CLIENT_TLS_HS_IN:
pufd->events = POLLIN;
break;
case HTTPD_CLIENT_SENDING:
case HTTPD_CLIENT_TLS_HS_OUT:
pufd->events = POLLOUT;
break;
case HTTPD_CLIENT_RECEIVE_DONE: {
httpd_message_t *answer = &cl->answer;
httpd_message_t *query = &cl->query;
httpd_MsgInit( answer );
/* Handle what we received */
switch (query->i_type) {
case HTTPD_MSG_ANSWER:
cl->url = NULL;
cl->i_state = HTTPD_CLIENT_DEAD;
break;
case HTTPD_MSG_OPTIONS:
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_proto = query->i_proto;
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
httpd_MsgAdd( answer, "Content-Length", "0" );
switch( query->i_proto )
{
case HTTPD_PROTO_HTTP:
answer->i_version = 1;
httpd_MsgAdd(answer, "Allow", "GET,HEAD,POST,OPTIONS");
break;
case HTTPD_PROTO_RTSP:
answer->i_version = 0;
const char *p = httpd_MsgGet( query, "Cseq" );
if( p != NULL )
httpd_MsgAdd( answer, "Cseq", "%s", p );
p = httpd_MsgGet( query, "Timestamp" );
if( p != NULL )
httpd_MsgAdd( answer, "Timestamp", "%s", p );
p = httpd_MsgGet( query, "Require" );
if( p != NULL ) {
answer->i_status = 551;
httpd_MsgAdd( query, "Unsupported", "%s", p );
}
httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
"TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
break;
}
cl->i_buffer = -1; /* Force the creation of the answer in
* httpd_ClientSend */
cl->i_state = HTTPD_CLIENT_SENDING;
break;
case HTTPD_MSG_NONE:
if( query->i_proto == HTTPD_PROTO_NONE ) {
cl->url = NULL;
cl->i_state = HTTPD_CLIENT_DEAD;
} else {
/* unimplemented */
answer->i_proto = query->i_proto ;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_version= 0;
answer->i_status = 501;
char *p;
answer->i_body = httpd_HtmlError (&p, 501, NULL);
answer->p_body = (uint8_t *)p;
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
cl->i_buffer = -1; /* Force the creation of the answer in httpd_ClientSend */
cl->i_state = HTTPD_CLIENT_SENDING;
}
break;
default: {
int i_msg = query->i_type;
bool b_auth_failed = false;
/* Search the url and trigger callbacks */
for(int i = 0; i < host->i_url; i++ ) {
httpd_url_t *url = host->url[i];
if (strcmp(url->psz_url, query->psz_url))
continue;
if (!url->catch[i_msg].cb)
continue;
if (answer) {
b_auth_failed = !httpdAuthOk(url->psz_user,
url->psz_password,
httpd_MsgGet(query, "Authorization")); /* BASIC id */
if (b_auth_failed)
break;
}
if (url->catch[i_msg].cb(url->catch[i_msg].p_sys, cl, answer, query))
continue;
if( answer->i_proto == HTTPD_PROTO_NONE )
cl->i_buffer = cl->i_buffer_size; /* Raw answer from a CGI */
else
cl->i_buffer = -1;
/* only one url can answer */
answer = NULL;
if( cl->url == NULL )
cl->url = url;
}
if( answer ) {
answer->i_proto = query->i_proto;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_version= 0;
if( b_auth_failed ) {
httpd_MsgAdd( answer, "WWW-Authenticate",
"Basic realm=\"VLC stream\"" );
answer->i_status = 401;
} else
answer->i_status = 404; /* no url registered */
char *p;
answer->i_body = httpd_HtmlError (&p, answer->i_status,
query->psz_url);
answer->p_body = (uint8_t *)p;
cl->i_buffer = -1; /* Force the creation of the answer in httpd_ClientSend */
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
}
cl->i_state = HTTPD_CLIENT_SENDING;
}
}
break;
}
case HTTPD_CLIENT_SEND_DONE:
if( !cl->b_stream_mode || cl->answer.i_body_offset == 0 )
{
const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
bool b_connection = false;
bool b_keepalive = false;
bool b_query = false;
cl->url = NULL;
if( psz_connection )
{
b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
}
if( psz_query )
{
b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
}
if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
( ( cl->query.i_version == 0 && b_keepalive ) ||
( cl->query.i_version == 1 && !b_connection ) ) ) ||
( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
!b_query && !b_connection ) )
{
httpd_MsgClean( &cl->query );
httpd_MsgInit( &cl->query );
cl->i_buffer = 0;
cl->i_buffer_size = 1000;
free( cl->p_buffer );
cl->p_buffer = xmalloc( cl->i_buffer_size );
cl->i_state = HTTPD_CLIENT_RECEIVING;
}
else
{
cl->i_state = HTTPD_CLIENT_DEAD;
}
httpd_MsgClean( &cl->answer );
}
else
{
i_offset = cl->answer.i_body_offset;
httpd_MsgClean( &cl->answer );
cl->answer.i_body_offset = i_offset;
free( cl->p_buffer );
cl->p_buffer = NULL;
cl->i_buffer = 0;
cl->i_buffer_size = 0;
cl->i_state = HTTPD_CLIENT_WAITING;
}
break;
case HTTPD_CLIENT_WAITING:
i_offset = cl->answer.i_body_offset;
int i_msg = cl->query.i_type;
httpd_MsgInit( &cl->answer );
cl->answer.i_body_offset = i_offset;
cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
&cl->answer, &cl->query );
if( cl->answer.i_type != HTTPD_MSG_NONE )
{
/* we have new data, so re-enter send mode */
cl->i_buffer = 0;
cl->p_buffer = cl->answer.p_body;
cl->i_buffer_size = cl->answer.i_body;
cl->answer.p_body = NULL;
cl->answer.i_body = 0;
cl->i_state = HTTPD_CLIENT_SENDING;
}
}
if (pufd->events != 0)
nfd++;
else
b_low_delay = true;
}
vlc_mutex_unlock( &host->lock );
vlc_restorecancel( canc );
/* we will wait 20ms (not too big) if HTTPD_CLIENT_WAITING */
int ret = poll( ufd, nfd, b_low_delay ? 20 : -1 );
canc = vlc_savecancel();
vlc_mutex_lock( &host->lock );
switch( ret ) {
case -1:
if (errno != EINTR) {
/* Kernel on low memory or a bug: pace */
msg_Err( host, "polling error: %s", vlc_strerror_c(errno) );
msleep( 100000 );
}
case 0:
vlc_restorecancel( canc );
return;
}
/* Handle client sockets */
now = mdate();
nfd = host->nfd;
for( int i_client = 0; i_client < host->i_client; i_client++ )
{
httpd_client_t *cl = host->client[i_client];
const struct pollfd *pufd = &ufd[nfd];
assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
if( cl->fd != pufd->fd )
continue; // we were not waiting for this client
++nfd;
if( pufd->revents == 0 )
continue; // no event received
cl->i_activity_date = now;
switch (cl->i_state) {
case HTTPD_CLIENT_RECEIVING: httpd_ClientRecv( cl ); break;
case HTTPD_CLIENT_SENDING: httpd_ClientSend( cl ); break;
case HTTPD_CLIENT_TLS_HS_IN:
case HTTPD_CLIENT_TLS_HS_OUT: httpd_ClientTlsHandshake( cl ); break;
}
}
/* Handle server sockets (accept new connections) */
for( nfd = 0; nfd < host->nfd; nfd++ )
{
httpd_client_t *cl;
int fd = ufd[nfd].fd;
assert (fd == host->fds[nfd]);
if( ufd[nfd].revents == 0 )
continue;
/* */
fd = vlc_accept (fd, NULL, NULL, true);
if (fd == -1)
continue;
setsockopt (fd, SOL_SOCKET, SO_REUSEADDR,
&(int){ 1 }, sizeof(int));
vlc_tls_t *p_tls;
if( host->p_tls != NULL )
p_tls = vlc_tls_SessionCreate( host->p_tls, fd, NULL );
else
p_tls = NULL;
cl = httpd_ClientNew( fd, p_tls, now );
TAB_APPEND( host->i_client, host->client, cl );
}
vlc_restorecancel(canc);
}
static void* httpd_HostThread( void *data )
{
httpd_host_t *host = data;
vlc_mutex_lock( &host->lock );
while( host->i_ref > 0 )
httpdLoop(host);
vlc_mutex_unlock( &host->lock );
return NULL;
}
int httpd_StreamSetHTTPHeaders(httpd_stream_t * p_stream, httpd_header * p_headers, size_t i_headers )
{
if( !p_stream )
return VLC_EGENERIC;
vlc_mutex_lock( &p_stream->lock );
if( p_stream->p_http_headers )
{
for( size_t i = 0; i < p_stream->i_http_headers; i++)
{
free( p_stream->p_http_headers[i].name );
free( p_stream->p_http_headers[i].value );
}
free( p_stream->p_http_headers );
p_stream->p_http_headers = NULL;
p_stream->i_http_headers = 0;
}
if( !p_headers || !i_headers )
{
vlc_mutex_unlock( &p_stream->lock );
return VLC_SUCCESS;
}
p_stream->p_http_headers = malloc(sizeof(httpd_header) * i_headers );
if( !p_stream->p_http_headers )
{
vlc_mutex_unlock( &p_stream->lock );
return VLC_ENOMEM;
}
size_t j = 0;
for( size_t i = 0; i < i_headers; i++ )
{
if( unlikely( !p_headers[i].name || !p_headers[i].value ) )
continue;
p_stream->p_http_headers[j].name = strdup( p_headers[i].name );
p_stream->p_http_headers[j].value = strdup( p_headers[i].value );
if( unlikely( !p_stream->p_http_headers[j].name ||
!p_stream->p_http_headers[j].value ) )
{
free( p_stream->p_http_headers[j].name );
free( p_stream->p_http_headers[j].value );
break;
}
j++;
}
p_stream->i_http_headers = j;
vlc_mutex_unlock( &p_stream->lock );
return VLC_SUCCESS;
}