1 /*****************************************************************************
2 * http.c: HTTP input module
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Christophe Massiot <massiot@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
31 #include <vlc/input.h>
33 #include "vlc_playlist.h"
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Open ( vlc_object_t * );
40 static void Close( vlc_object_t * );
42 #define PROXY_TEXT N_("HTTP proxy")
43 #define PROXY_LONGTEXT N_( \
44 "You can specify an HTTP proxy to use. It must be of the form " \
45 "http://myproxy.mydomain:myport/. If none is specified, the HTTP_PROXY " \
46 "environment variable will be tried." )
48 #define CACHING_TEXT N_("Caching value in ms")
49 #define CACHING_LONGTEXT N_( \
50 "Allows you to modify the default caching value for http streams. This " \
51 "value should be set in millisecond units." )
53 #define USER_TEXT N_("HTTP user name")
54 #define USER_LONGTEXT N_("Allows you to modify the user name that will " \
55 "be used for the connection (Basic authentication only).")
57 #define PASS_TEXT N_("HTTP password")
58 #define PASS_LONGTEXT N_("Allows you to modify the password that will be " \
59 "used for the connection.")
61 #define AGENT_TEXT N_("HTTP user agent")
62 #define AGENT_LONGTEXT N_("Allows you to modify the user agent that will be " \
63 "used for the connection.")
65 #define RECONNECT_TEXT N_("Auto re-connect")
66 #define RECONNECT_LONGTEXT N_("Will automatically attempt a re-connection " \
67 "in case it was untimely closed.")
70 set_description( _("HTTP input") );
71 set_capability( "access2", 0 );
73 add_string( "http-proxy", NULL, NULL, PROXY_TEXT, PROXY_LONGTEXT,
75 add_integer( "http-caching", 4 * DEFAULT_PTS_DELAY / 1000, NULL,
76 CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
77 add_string( "http-user", NULL, NULL, USER_TEXT, USER_LONGTEXT, VLC_FALSE );
78 add_string( "http-pwd", NULL , NULL, PASS_TEXT, PASS_LONGTEXT, VLC_FALSE );
79 add_string( "http-user-agent", COPYRIGHT_MESSAGE , NULL, AGENT_TEXT,
80 AGENT_LONGTEXT, VLC_FALSE );
81 add_bool( "http-reconnect", 0, NULL, RECONNECT_TEXT,
82 RECONNECT_LONGTEXT, VLC_TRUE );
84 add_shortcut( "http" );
85 add_shortcut( "http4" );
86 add_shortcut( "http6" );
87 set_callbacks( Open, Close );
90 /*****************************************************************************
92 *****************************************************************************/
101 char *psz_user_agent;
115 vlc_bool_t b_chunked;
118 vlc_bool_t b_seekable;
119 vlc_bool_t b_reconnect;
120 vlc_bool_t b_pace_control;
124 static int Read( access_t *, uint8_t *, int );
125 static int Seek( access_t *, int64_t );
126 static int Control( access_t *, int, va_list );
129 static void ParseURL( access_sys_t *, char *psz_url );
130 static int Connect( access_t *, int64_t );
131 static char *b64_encode( unsigned char *src );
133 /*****************************************************************************
135 *****************************************************************************/
136 static int Open( vlc_object_t *p_this )
138 access_t *p_access = (access_t*)p_this;
142 /* First set ipv4/ipv6 */
143 var_Create( p_access, "ipv4", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
144 var_Create( p_access, "ipv6", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
146 if( *p_access->psz_access )
149 /* Find out which shortcut was used */
150 if( !strncmp( p_access->psz_access, "http4", 6 ) )
152 val.b_bool = VLC_TRUE;
153 var_Set( p_access, "ipv4", val );
155 val.b_bool = VLC_FALSE;
156 var_Set( p_access, "ipv6", val );
158 else if( !strncmp( p_access->psz_access, "http6", 6 ) )
160 val.b_bool = VLC_TRUE;
161 var_Set( p_access, "ipv6", val );
163 val.b_bool = VLC_FALSE;
164 var_Set( p_access, "ipv4", val );
168 /* Set up p_access */
169 p_access->pf_read = Read;
170 p_access->pf_block = NULL;
171 p_access->pf_control = Control;
172 p_access->pf_seek = Seek;
173 p_access->info.i_update = 0;
174 p_access->info.i_size = 0;
175 p_access->info.i_pos = 0;
176 p_access->info.b_eof = VLC_FALSE;
177 p_access->info.i_title = 0;
178 p_access->info.i_seekpoint = 0;
179 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
180 memset( p_sys, 0, sizeof( access_sys_t ) );
182 p_sys->b_proxy = VLC_FALSE;
183 p_sys->i_version = 1;
184 p_sys->b_seekable = VLC_TRUE;
185 p_sys->psz_mime = NULL;
186 p_sys->psz_location = NULL;
187 p_sys->psz_user_agent = NULL;
188 p_sys->b_pace_control = VLC_TRUE;
191 ParseURL( p_sys, p_access->psz_path );
192 if( p_sys->url.psz_host == NULL || *p_sys->url.psz_host == '\0' )
194 msg_Warn( p_access, "invalid host" );
197 if( p_sys->url.i_port <= 0 )
199 p_sys->url.i_port = 80;
201 if( !p_sys->psz_user || *p_sys->psz_user == '\0' )
203 p_sys->psz_user = var_CreateGetString( p_access, "http-user" );
204 p_sys->psz_passwd = var_CreateGetString( p_access, "http-pwd" );
208 p_sys->psz_user_agent = var_CreateGetString( p_access, "http-user-agent" );
211 psz = var_CreateGetString( p_access, "http-proxy" );
214 p_sys->b_proxy = VLC_TRUE;
215 vlc_UrlParse( &p_sys->proxy, psz, 0 );
219 char *psz_proxy = getenv( "http_proxy" );
220 if( psz_proxy && *psz_proxy )
222 p_sys->b_proxy = VLC_TRUE;
223 vlc_UrlParse( &p_sys->proxy, psz_proxy, 0 );
232 if( p_sys->proxy.psz_host == NULL || *p_sys->proxy.psz_host == '\0' )
234 msg_Warn( p_access, "invalid proxy host" );
237 if( p_sys->proxy.i_port <= 0 )
239 p_sys->proxy.i_port = 80;
243 msg_Dbg( p_access, "http: server='%s' port=%d file='%s",
244 p_sys->url.psz_host, p_sys->url.i_port, p_sys->url.psz_path );
247 msg_Dbg( p_access, " proxy %s:%d", p_sys->proxy.psz_host,
248 p_sys->proxy.i_port );
250 if( p_sys->psz_user && *p_sys->psz_user )
252 msg_Dbg( p_access, " user='%s', pwd='%s'",
253 p_sys->psz_user, p_sys->psz_passwd );
256 p_sys->b_reconnect = var_CreateGetBool( p_access, "http-reconnect" );
259 if( Connect( p_access, 0 ) )
261 /* Retry with http 1.0 */
262 p_sys->i_version = 0;
264 if( p_access->b_die ||
265 Connect( p_access, 0 ) )
271 if( p_sys->psz_mime && !strcasecmp( p_sys->psz_mime, "video/x-ms-asf" ) )
273 if( !strcasestr( p_access->psz_path, "asx" ) )
275 msg_Dbg( p_access, "this isn't http, it's mms" );
280 if( ( p_sys->i_code == 301 || p_sys->i_code == 302 ||
281 p_sys->i_code == 303 || p_sys->i_code == 307 ) &&
282 p_sys->psz_location && *p_sys->psz_location )
284 playlist_t * p_playlist;
286 msg_Dbg( p_access, "redirection to %s", p_sys->psz_location );
288 p_playlist = vlc_object_find( p_access, VLC_OBJECT_PLAYLIST,
292 msg_Err( p_access, "redirection failed: can't find playlist" );
295 p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
296 playlist_Add( p_playlist, p_sys->psz_location, p_sys->psz_location,
298 p_playlist->i_index + 1 );
299 vlc_object_release( p_playlist );
301 p_access->info.i_size = 0; /* Force to stop reading */
304 if( !strcmp( p_sys->psz_protocol, "ICY" ) )
306 if( p_sys->psz_mime && !strcasecmp( p_sys->psz_mime, "video/nsv" ) )
307 p_access->psz_demux = strdup( "nsv" );
308 else if( p_sys->psz_mime && ( !strcasecmp( p_sys->psz_mime, "audio/aac" ) ||
309 !strcasecmp( p_sys->psz_mime, "audio/aacp" ) ) )
310 p_access->psz_demux = strdup( "m4a" );
312 p_access->psz_demux = strdup( "mp3" );
314 msg_Info( p_access, "ICY server found, %s demuxer selected",
315 p_access->psz_demux );
317 p_sys->b_pace_control = VLC_FALSE;
320 if( p_sys->b_reconnect ) msg_Dbg( p_access, "auto re-connect enabled" );
323 var_Create( p_access, "http-caching", VLC_VAR_INTEGER |VLC_VAR_DOINHERIT );
328 vlc_UrlClean( &p_sys->url );
329 vlc_UrlClean( &p_sys->proxy );
330 if( p_sys->psz_mime ) free( p_sys->psz_mime );
331 if( p_sys->psz_location ) free( p_sys->psz_location );
332 if( p_sys->psz_user_agent ) free( p_sys->psz_user_agent );
333 if( p_sys->psz_user ) free( p_sys->psz_user );
334 if( p_sys->psz_passwd ) free( p_sys->psz_passwd );
338 net_Close( p_sys->fd );
344 /*****************************************************************************
346 *****************************************************************************/
347 static void Close( vlc_object_t *p_this )
349 access_t *p_access = (access_t*)p_this;
350 access_sys_t *p_sys = p_access->p_sys;
352 vlc_UrlClean( &p_sys->url );
353 vlc_UrlClean( &p_sys->proxy );
355 if( p_sys->psz_user ) free( p_sys->psz_user );
356 if( p_sys->psz_passwd ) free( p_sys->psz_passwd );
358 if( p_sys->psz_mime ) free( p_sys->psz_mime );
359 if( p_sys->psz_location ) free( p_sys->psz_location );
361 if( p_sys->psz_user_agent ) free( p_sys->psz_user_agent );
365 net_Close( p_sys->fd );
370 /*****************************************************************************
371 * Read: Read up to i_len bytes from the http connection and place in
372 * p_buffer. Return the actual number of bytes read
373 *****************************************************************************/
374 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
376 access_sys_t *p_sys = p_access->p_sys;
381 p_access->info.b_eof = VLC_TRUE;
385 if( p_access->info.i_size > 0 &&
386 i_len + p_access->info.i_pos > p_access->info.i_size )
388 if( ( i_len = p_access->info.i_size - p_access->info.i_pos ) == 0 )
390 p_access->info.b_eof = VLC_TRUE;
394 if( p_sys->b_chunked )
396 if( p_sys->i_chunk < 0 )
398 p_access->info.b_eof = VLC_TRUE;
402 if( p_sys->i_chunk <= 0 )
404 char *psz = net_Gets( VLC_OBJECT(p_access), p_sys->fd );
405 /* read the chunk header */
408 msg_Dbg( p_access, "failed reading chunk-header line" );
411 p_sys->i_chunk = strtoll( psz, NULL, 16 );
414 if( p_sys->i_chunk <= 0 ) /* eof */
417 p_access->info.b_eof = VLC_TRUE;
422 if( i_len > p_sys->i_chunk )
424 i_len = p_sys->i_chunk;
429 i_read = net_Read( p_access, p_sys->fd, p_buffer, i_len, VLC_FALSE );
432 p_access->info.i_pos += i_read;
434 if( p_sys->b_chunked )
436 p_sys->i_chunk -= i_read;
437 if( p_sys->i_chunk <= 0 )
439 /* read the empty line */
440 char *psz = net_Gets( VLC_OBJECT(p_access), p_sys->fd );
441 if( psz ) free( psz );
445 else if( i_read == 0 )
447 if( p_sys->b_reconnect )
449 msg_Dbg( p_access, "got disconnected, trying to reconnect" );
450 net_Close( p_sys->fd ); p_sys->fd = -1;
451 if( Connect( p_access, p_access->info.i_pos ) )
453 msg_Dbg( p_access, "reconnection failed" );
457 p_sys->b_reconnect = VLC_FALSE;
458 i_read = Read( p_access, p_buffer, i_len );
459 p_sys->b_reconnect = VLC_TRUE;
463 if( i_read == 0 ) p_access->info.b_eof = VLC_TRUE;
469 /*****************************************************************************
470 * Seek: close and re-open a connection at the right place
471 *****************************************************************************/
472 static int Seek( access_t *p_access, int64_t i_pos )
474 access_sys_t *p_sys = p_access->p_sys;
476 msg_Dbg( p_access, "trying to seek to "I64Fd, i_pos );
478 net_Close( p_sys->fd ); p_sys->fd = -1;
480 if( Connect( p_access, i_pos ) )
482 msg_Err( p_access, "seek failed" );
483 p_access->info.b_eof = VLC_TRUE;
489 /*****************************************************************************
491 *****************************************************************************/
492 static int Control( access_t *p_access, int i_query, va_list args )
494 access_sys_t *p_sys = p_access->p_sys;
502 case ACCESS_CAN_SEEK:
503 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
504 *pb_bool = p_sys->b_seekable;
506 case ACCESS_CAN_FASTSEEK:
507 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
508 *pb_bool = VLC_FALSE;
510 case ACCESS_CAN_PAUSE:
511 case ACCESS_CAN_CONTROL_PACE:
512 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
513 *pb_bool = p_sys->b_pace_control;
518 pi_int = (int*)va_arg( args, int * );
522 case ACCESS_GET_PTS_DELAY:
523 pi_64 = (int64_t*)va_arg( args, int64_t * );
524 *pi_64 = (int64_t)var_GetInteger( p_access, "http-caching" ) * 1000;
528 case ACCESS_SET_PAUSE_STATE:
531 case ACCESS_GET_TITLE_INFO:
532 case ACCESS_SET_TITLE:
533 case ACCESS_SET_SEEKPOINT:
534 case ACCESS_SET_PRIVATE_ID_STATE:
538 msg_Warn( p_access, "unimplemented query in control" );
545 /*****************************************************************************
546 * ParseURL: extract user:password
547 *****************************************************************************/
548 static void ParseURL( access_sys_t *p_sys, char *psz_url )
550 char *psz_dup = strdup( psz_url );
554 /* Syntax //[user:password]@<hostname>[:<port>][/<path>] */
562 if( ( p = strchr( psz, '@' ) ) )
567 comma = strchr( psz, ':' );
569 /* Retreive user:password */
574 p_sys->psz_user = strdup( psz );
575 p_sys->psz_passwd = strdup( comma );
579 p_sys->psz_user = strdup( psz );
588 vlc_UrlParse( &p_sys->url, p, 0 );
593 /*****************************************************************************
595 *****************************************************************************/
596 static int Connect( access_t *p_access, int64_t i_tell )
598 access_sys_t *p_sys = p_access->p_sys;
599 vlc_url_t srv = p_sys->b_proxy ? p_sys->proxy : p_sys->url;
603 if( p_sys->psz_location ) free( p_sys->psz_location );
604 if( p_sys->psz_mime ) free( p_sys->psz_mime );
606 p_sys->psz_location = NULL;
607 p_sys->psz_mime = NULL;
608 p_sys->b_chunked = VLC_FALSE;
611 p_access->info.i_size = 0;
612 p_access->info.i_pos = i_tell;
613 p_access->info.b_eof = VLC_FALSE;
616 /* Open connection */
617 p_sys->fd = net_OpenTCP( p_access, srv.psz_host, srv.i_port );
620 msg_Err( p_access, "cannot connect to %s:%d", srv.psz_host, srv.i_port );
626 if( p_sys->url.psz_path )
628 net_Printf( VLC_OBJECT(p_access), p_sys->fd,
629 "GET http://%s:%d/%s HTTP/1.%d\r\n",
630 p_sys->url.psz_host, p_sys->url.i_port,
631 p_sys->url.psz_path, p_sys->i_version );
635 net_Printf( VLC_OBJECT(p_access), p_sys->fd,
636 "GET http://%s:%d/ HTTP/1.%d\r\n",
637 p_sys->url.psz_host, p_sys->url.i_port,
644 char *psz_path = p_sys->url.psz_path;
645 if( !psz_path || !*psz_path )
649 if( p_sys->url.i_port != 80)
651 net_Printf( VLC_OBJECT(p_access), p_sys->fd,
652 "GET %s HTTP/1.%d\r\nHost: %s:%d\r\n",
653 psz_path, p_sys->i_version, p_sys->url.psz_host,
658 net_Printf( VLC_OBJECT(p_access), p_sys->fd,
659 "GET %s HTTP/1.%d\r\nHost: %s\r\n",
660 psz_path, p_sys->i_version, p_sys->url.psz_host );
664 net_Printf( VLC_OBJECT(p_access), p_sys->fd, "User-Agent: %s\r\n",
665 p_sys->psz_user_agent );
667 if( p_sys->i_version == 1 )
669 net_Printf( VLC_OBJECT(p_access), p_sys->fd,
670 "Range: bytes="I64Fd"-\r\n", i_tell );
672 /* Authentification */
673 if( p_sys->psz_user && *p_sys->psz_user )
678 asprintf( &buf, "%s:%s", p_sys->psz_user,
679 p_sys->psz_passwd ? p_sys->psz_passwd : "" );
681 b64 = b64_encode( buf );
683 net_Printf( VLC_OBJECT(p_access), p_sys->fd,
684 "Authorization: Basic %s\r\n", b64 );
687 net_Printf( VLC_OBJECT(p_access), p_sys->fd, "Connection: Close\r\n" );
689 if( net_Printf( VLC_OBJECT(p_access), p_sys->fd, "\r\n" ) < 0 )
691 msg_Err( p_access, "failed to send request" );
692 net_Close( p_sys->fd ); p_sys->fd = -1;
697 if( ( psz = net_Gets( VLC_OBJECT(p_access), p_sys->fd ) ) == NULL )
699 msg_Err( p_access, "failed to read answer" );
702 if( !strncmp( psz, "HTTP/1.", 7 ) )
704 p_sys->psz_protocol = "HTTP";
705 p_sys->i_code = atoi( &psz[9] );
707 else if( !strncmp( psz, "ICY", 3 ) )
709 p_sys->psz_protocol = "ICY";
710 p_sys->i_code = atoi( &psz[4] );
711 p_sys->b_reconnect = VLC_TRUE;
715 msg_Err( p_access, "invalid HTTP reply '%s'", psz );
719 msg_Dbg( p_access, "protocol '%s' answer code %d",
720 p_sys->psz_protocol, p_sys->i_code );
721 if( !strcmp( p_sys->psz_protocol, "ICY" ) )
723 p_sys->b_seekable = VLC_FALSE;
725 if( p_sys->i_code != 206 )
727 p_sys->b_seekable = VLC_FALSE;
729 if( p_sys->i_code >= 400 )
731 msg_Err( p_access, "error: %s", psz );
739 char *psz = net_Gets( VLC_OBJECT(p_access), p_sys->fd );
744 msg_Err( p_access, "failed to read answer" );
748 /* msg_Dbg( p_input, "Line=%s", psz ); */
756 if( ( p = strchr( psz, ':' ) ) == NULL )
758 msg_Err( p_access, "malformed header line: %s", psz );
763 while( *p == ' ' ) p++;
765 if( !strcasecmp( psz, "Content-Length" ) )
767 p_access->info.i_size = i_tell + atoll( p );
768 msg_Dbg( p_access, "stream size="I64Fd, p_access->info.i_size );
770 else if( !strcasecmp( psz, "Location" ) )
772 if( p_sys->psz_location ) free( p_sys->psz_location );
773 p_sys->psz_location = strdup( p );
775 else if( !strcasecmp( psz, "Content-Type" ) )
777 if( p_sys->psz_mime ) free( p_sys->psz_mime );
778 p_sys->psz_mime = strdup( p );
779 msg_Dbg( p_access, "Content-Type: %s", p_sys->psz_mime );
781 else if( !strcasecmp( psz, "Server" ) &&
782 !strncasecmp( p, "Icecast", 7 ) )
784 p_sys->b_reconnect = VLC_TRUE;
785 msg_Dbg( p_access, "Server: %s", p );
787 else if( !strcasecmp( psz, "Transfer-Encoding" ) )
789 msg_Dbg( p_access, "Transfer-Encoding: %s", p );
790 if( !strncasecmp( p, "chunked", 7 ) )
792 p_sys->b_chunked = VLC_TRUE;
801 net_Close( p_sys->fd ); p_sys->fd = -1;
805 /*****************************************************************************
807 *****************************************************************************/
808 static char *b64_encode( unsigned char *src )
810 static const char b64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
812 char *dst = malloc( strlen( src ) * 4 / 3 + 12 );
815 unsigned i_shift = 0;
821 i_bits = ( i_bits << 8 )|( *src++ );
824 else if( i_shift > 0 )
826 i_bits <<= 6 - i_shift;
835 while( i_shift >= 6 )
838 *dst++ = b64[(i_bits >> i_shift)&0x3f];