1 /*****************************************************************************
2 * util.c : Utility functions for HTTP interface
3 *****************************************************************************
4 * Copyright (C) 2001-2005 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
8 * Laurent Aimar <fenrir@via.ecp.fr>
9 * Christophe Massiot <massiot@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
30 #include <vlc_common.h>
32 #include "vlc_strings.h"
34 /****************************************************************************
35 * File and directory functions
36 ****************************************************************************/
38 /* ToUrl: create a good name for an url from filename */
39 char *FileToUrl( char *name, bool *pb_index )
43 url = p = malloc( strlen( name ) + 1 );
52 while( *name == '\\' || *name == '/' )
64 /* convert '\\' into '/' */
75 if( ( p = strrchr( url, '/' ) ) != NULL )
77 if( !strncmp( p, "/index.", 7 ) )
87 int FileLoad( FILE *f, char **pp_data, int *pi_data )
91 /* just load the file */
93 *pp_data = malloc( 1025 ); /* +1 for \0 */
94 while( ( i_read = fread( &(*pp_data)[*pi_data], 1, 1024, f ) ) == 1024 )
97 *pp_data = realloc( *pp_data, *pi_data + 1025 );
103 (*pp_data)[*pi_data] = '\0';
108 /* Parse a directory and recursively add files */
109 int ParseDirectory( intf_thread_t *p_intf, char *psz_root,
112 intf_sys_t *p_sys = p_intf->p_sys;
113 char dir[MAX_DIR_SIZE];
119 char *password = NULL;
131 if( ( p_dir = utf8_opendir( psz_dir ) ) == NULL )
133 if( errno != ENOENT && errno != ENOTDIR )
134 msg_Err( p_intf, "cannot open directory (%s)", psz_dir );
138 i_dirlen = strlen( psz_dir );
139 if( i_dirlen + 10 > MAX_DIR_SIZE )
141 msg_Warn( p_intf, "skipping too deep directory (%s)", psz_dir );
146 msg_Dbg( p_intf, "dir=%s", psz_dir );
148 snprintf( dir, sizeof( dir ), "%s%c.access", psz_dir, sep );
149 if( ( file = utf8_fopen( dir, "r" ) ) != NULL )
154 msg_Dbg( p_intf, "find .access in dir=%s", psz_dir );
156 i_size = fread( line, 1, 1023, file );
160 while( i_size > 0 && ( line[i_size-1] == '\n' ||
161 line[i_size-1] == '\r' ) )
168 p = strchr( line, ':' );
172 user = strdup( line );
173 password = strdup( p );
176 msg_Dbg( p_intf, "using user=%s password=%s (read=%d)",
177 user, password, i_size );
182 snprintf( dir, sizeof( dir ), "%s%c.hosts", psz_dir, sep );
183 p_acl = ACL_Create( p_intf, false );
184 if( ACL_LoadFile( p_acl, dir ) )
186 ACL_Destroy( p_acl );
189 if( stat( dir, &st ) == 0 )
200 /* parse psz_src dir */
201 if( ( psz_filename = utf8_readdir( p_dir ) ) == NULL )
206 if( ( psz_filename[0] == '.' )
207 || ( i_dirlen + strlen( psz_filename ) > MAX_DIR_SIZE ) )
209 free( psz_filename );
213 snprintf( dir, sizeof( dir ), "%s%c%s", psz_dir, sep, psz_filename );
214 free( psz_filename );
216 if( ParseDirectory( p_intf, psz_root, dir ) )
218 httpd_file_sys_t *f = NULL;
219 httpd_handler_sys_t *h = NULL;
221 char *psz_name, *psz_ext;
223 psz_name = FileToUrl( &dir[strlen( psz_root )], &b_index );
224 psz_ext = strrchr( dir, '.' );
225 if( psz_ext != NULL )
229 for( i = 0; i < p_sys->i_handlers; i++ )
230 if( !strcmp( p_sys->pp_handlers[i]->psz_ext, psz_ext ) )
232 if( i < p_sys->i_handlers )
234 f = malloc( sizeof( httpd_handler_sys_t ) );
235 h = (httpd_handler_sys_t *)f;
237 h->p_association = p_sys->pp_handlers[i];
242 f = malloc( sizeof( httpd_file_sys_t ) );
243 f->b_handler = false;
250 f->file = strdup (dir);
252 f->b_html = strstr( &dir[strlen( psz_root )], ".htm" ) || strstr( &dir[strlen( psz_root )], ".xml" ) ? true : false;
256 msg_Err( p_intf , "unable to parse directory" );
259 return( VLC_ENOMEM );
261 msg_Dbg( p_intf, "file=%s (url=%s)",
266 char *psz_type = strdup( "text/html; charset=UTF-8" );
267 if( strstr( &dir[strlen( psz_root )], ".xml" ) )
269 char *psz = strstr( psz_type, "html;" );
279 f->p_file = httpd_FileNew( p_sys->p_httpd_host,
281 f->b_html ? psz_type : NULL,
282 user, password, p_acl,
285 if( f->p_file != NULL )
287 TAB_APPEND( p_sys->i_files, p_sys->pp_files, f );
292 h->p_handler = httpd_HandlerNew( p_sys->p_httpd_host,
294 user, password, p_acl,
295 HandlerCallback, h );
296 if( h->p_handler != NULL )
298 TAB_APPEND( p_sys->i_files, p_sys->pp_files,
299 (httpd_file_sys_t *)h );
303 /* for url that ends by / add
304 * - a redirect from rep to rep/
305 * - in case of index.* rep/index.html to rep/ */
306 if( f && f->name[strlen(f->name) - 1] == '/' )
308 char *psz_redir = strdup( f->name );
310 psz_redir[strlen( psz_redir ) - 1] = '\0';
312 msg_Dbg( p_intf, "redir=%s -> %s", psz_redir, f->name );
313 f->p_redir = httpd_RedirectNew( p_sys->p_httpd_host, f->name, psz_redir );
316 if( b_index && ( p = strstr( f->file, "index." ) ) )
318 if( asprintf( &psz_redir, "%s%s", f->name, p ) != -1 )
320 msg_Dbg( p_intf, "redir=%s -> %s", psz_redir, f->name );
321 f->p_redir2 = httpd_RedirectNew( p_sys->p_httpd_host,
322 f->name, psz_redir );
334 ACL_Destroy( p_acl );
341 /*************************************************************************
343 *************************************************************************/
344 void PlaylistListNode( intf_thread_t *p_intf, playlist_t *p_pl,
345 playlist_item_t *p_node, char *name, mvar_t *s,
350 if( p_node->i_children == -1 )
354 mvar_t *itm = mvar_New( name, "set" );
355 playlist_item_t * p_item = playlist_CurrentPlayingItem(p_pl);
356 if( p_item && p_node &&
357 p_item->p_input && p_node->p_input &&
358 p_item->p_input->i_id == p_node->p_input->i_id )
360 mvar_AppendNewVar( itm, "current", "1" );
364 mvar_AppendNewVar( itm, "current", "0" );
367 sprintf( value, "%d", p_node->i_id );
368 mvar_AppendNewVar( itm, "index", value );
370 psz = input_item_GetName( p_node->p_input );
371 mvar_AppendNewVar( itm, "name", psz );
374 psz = input_item_GetURI( p_node->p_input );
375 mvar_AppendNewVar( itm, "uri", psz );
378 sprintf( value, "Item");
379 mvar_AppendNewVar( itm, "type", value );
381 sprintf( value, "%d", i_depth );
382 mvar_AppendNewVar( itm, "depth", value );
384 if( p_node->i_flags & PLAYLIST_RO_FLAG )
386 mvar_AppendNewVar( itm, "ro", "ro" );
390 mvar_AppendNewVar( itm, "ro", "rw" );
393 sprintf( value, "%ld",
394 (long) input_item_GetDuration( p_node->p_input ) );
395 mvar_AppendNewVar( itm, "duration", value );
397 mvar_AppendVar( s, itm );
403 mvar_t *itm = mvar_New( name, "set" );
405 mvar_AppendNewVar( itm, "name", p_node->p_input->psz_name );
406 mvar_AppendNewVar( itm, "uri", p_node->p_input->psz_name );
408 sprintf( value, "Node" );
409 mvar_AppendNewVar( itm, "type", value );
411 sprintf( value, "%d", p_node->i_id );
412 mvar_AppendNewVar( itm, "index", value );
414 sprintf( value, "%d", p_node->i_children);
415 mvar_AppendNewVar( itm, "i_children", value );
417 sprintf( value, "%d", i_depth );
418 mvar_AppendNewVar( itm, "depth", value );
420 if( p_node->i_flags & PLAYLIST_RO_FLAG )
422 mvar_AppendNewVar( itm, "ro", "ro" );
426 mvar_AppendNewVar( itm, "ro", "rw" );
429 mvar_AppendVar( s, itm );
431 for (i_child = 0 ; i_child < p_node->i_children ; i_child++)
432 PlaylistListNode( p_intf, p_pl,
433 p_node->pp_children[i_child],
434 name, s, i_depth + 1);
440 /****************************************************************************
441 * Seek command parsing handling
442 ****************************************************************************/
443 void HandleSeek( intf_thread_t *p_intf, char *p_value )
445 intf_sys_t *p_sys = p_intf->p_sys;
451 #define POSITION_ABSOLUTE 12
452 #define POSITION_REL_FOR 13
453 #define POSITION_REL_BACK 11
454 #define VL_TIME_ABSOLUTE 0
455 #define VL_TIME_REL_FOR 1
456 #define VL_TIME_REL_BACK -1
459 var_Get( p_sys->p_input, "length", &val );
460 i_length = val.i_time;
462 while( p_value[0] != '\0' )
468 i_relative = VL_TIME_REL_FOR;
474 i_relative = VL_TIME_REL_BACK;
478 case '0': case '1': case '2': case '3': case '4':
479 case '5': case '6': case '7': case '8': case '9':
481 i_stock = strtol( p_value , &p_value , 10 );
484 case '%': /* for percentage ie position */
486 i_relative += POSITION_ABSOLUTE;
494 i_value = 60 * (i_value + i_stock) ;
499 case 'h': case 'H': /* hours */
501 i_value += 3600 * i_stock;
503 /* other characters which are not numbers are not
505 while( ((p_value[0] < '0') || (p_value[0] > '9'))
506 && (p_value[0] != '\0') )
512 case 'm': case 'M': case '\'': /* minutes */
514 i_value += 60 * i_stock;
517 while( ((p_value[0] < '0') || (p_value[0] > '9'))
518 && (p_value[0] != '\0') )
524 case 's': case 'S': case '"': /* seconds */
528 while( ((p_value[0] < '0') || (p_value[0] > '9'))
529 && (p_value[0] != '\0') )
543 /* if there is no known symbol, I consider it as seconds.
544 * Otherwise, i_stock = 0 */
549 case VL_TIME_ABSOLUTE:
551 if( (uint64_t)( i_value ) * 1000000 <= i_length )
552 val.i_time = (uint64_t)( i_value ) * 1000000;
554 val.i_time = i_length;
556 var_Set( p_sys->p_input, "time", val );
557 msg_Dbg( p_intf, "requested seek position: %dsec", i_value );
560 case VL_TIME_REL_FOR:
562 var_Get( p_sys->p_input, "time", &val );
563 if( (uint64_t)( i_value ) * 1000000 + val.i_time <= i_length )
565 val.i_time = ((uint64_t)( i_value ) * 1000000) + val.i_time;
568 val.i_time = i_length;
570 var_Set( p_sys->p_input, "time", val );
571 msg_Dbg( p_intf, "requested seek position forward: %dsec", i_value );
574 case VL_TIME_REL_BACK:
576 var_Get( p_sys->p_input, "time", &val );
577 if( (int64_t)( i_value ) * 1000000 > val.i_time )
582 val.i_time = val.i_time - ((uint64_t)( i_value ) * 1000000);
584 var_Set( p_sys->p_input, "time", val );
585 msg_Dbg( p_intf, "requested seek position backward: %dsec", i_value );
588 case POSITION_ABSOLUTE:
590 val.f_float = __MIN( __MAX( ((float) i_value ) / 100.0 ,
592 var_Set( p_sys->p_input, "position", val );
593 msg_Dbg( p_intf, "requested seek percent: %d%%", i_value );
596 case POSITION_REL_FOR:
598 var_Get( p_sys->p_input, "position", &val );
599 val.f_float += __MIN( __MAX( ((float) i_value ) / 100.0,
601 var_Set( p_sys->p_input, "position", val );
602 msg_Dbg( p_intf, "requested seek percent forward: %d%%",
606 case POSITION_REL_BACK:
608 var_Get( p_sys->p_input, "position", &val );
609 val.f_float -= __MIN( __MAX( ((float) i_value ) / 100.0,
611 var_Set( p_sys->p_input, "position", val );
612 msg_Dbg( p_intf, "requested seek percent backward: %d%%",
618 msg_Dbg( p_intf, "invalid seek request" );
623 #undef POSITION_ABSOLUTE
624 #undef POSITION_REL_FOR
625 #undef POSITION_REL_BACK
626 #undef VL_TIME_ABSOLUTE
627 #undef VL_TIME_REL_FOR
628 #undef VL_TIME_REL_BACK
632 /****************************************************************************
633 * URI Parsing functions
634 ****************************************************************************/
635 int TestURIParam( char *psz_uri, const char *psz_name )
639 while( (p = strstr( p, psz_name )) )
641 /* Verify that we are dealing with a post/get argument */
642 if( (p == psz_uri || *(p - 1) == '&' || *(p - 1) == '\n')
643 && p[strlen(psz_name)] == '=' )
653 static const char *FindURIValue( const char *psz_uri, const char *restrict psz_name,
654 size_t *restrict p_len )
656 const char *p = psz_uri, *end;
659 while( (p = strstr( p, psz_name )) )
661 /* Verify that we are dealing with a post/get argument */
662 if( (p == psz_uri || *(p - 1) == '&' || *(p - 1) == '\n')
663 && p[strlen(psz_name)] == '=' )
674 p += strlen( psz_name );
677 if( ( end = strchr( p, '\n' ) ) != NULL )
680 if( ( end > p ) && ( end[-1] == '\r' ) )
688 if( ( end = strchr( p, '&' ) ) != NULL )
698 const char *ExtractURIValue( const char *restrict psz_uri,
699 const char *restrict psz_name,
700 char *restrict psz_buf, size_t bufsize )
703 const char *psz_value = FindURIValue( psz_uri, psz_name, &len );
704 const char *psz_next;
706 if( psz_value == NULL )
713 psz_next = psz_value + len;
719 strncpy( psz_buf, psz_value, len );
726 char *ExtractURIString( const char *restrict psz_uri,
727 const char *restrict psz_name )
730 const char *psz_value = FindURIValue( psz_uri, psz_name, &len );
732 if( psz_value == NULL )
735 char *res = malloc( len + 1 );
739 memcpy( res, psz_value, len );
745 /* Since the resulting string is smaller we can work in place, so it is
746 * permitted to have psz == new. new points to the first word of the
747 * string, the function returns the remaining string. */
748 char *FirstWord( char *psz, char *new )
755 while( *psz != '\0' && *psz != ' ' )
760 while( *psz != '\0' && *psz != c )
762 if( *psz == '\\' && psz[1] != '\0' )
771 if( *psz == '\\' && psz[1] != '\0' )
785 /**********************************************************************
786 * MRLParse: parse the MRL, find the MRL string and the options,
787 * create an item with all information in it, and return the item.
788 * return NULL if there is an error.
789 **********************************************************************/
791 /* Function analog to FirstWord except that it relies on colon instead
792 * of space to delimit option boundaries. */
793 static char *FirstOption( char *psz, char *new )
795 bool b_end, b_start = true;
800 while( *psz != '\0' && (*psz != ' ' || psz[1] != ':') )
805 while( *psz != '\0' && *psz != c )
807 if( *psz == '\\' && psz[1] != '\0' )
817 if( *psz == '\\' && psz[1] != '\0' )
826 while (new[-1] == ' ')
836 input_item_t *MRLParse( intf_thread_t *p_intf, char *_psz,
839 char *psz = strdup( _psz );
842 input_item_t * p_input = NULL;
844 /* extract the mrl */
845 s_temp = FirstOption( s_mrl, s_mrl );
848 s_temp = s_mrl + strlen( s_mrl );
851 p_input = input_item_New( p_intf, s_mrl, psz_name );
854 /* now we can take care of the options */
855 while ( *s_mrl != '\0' )
857 s_temp = FirstOption( s_mrl, s_mrl );
862 s_temp = s_mrl + strlen( s_mrl );
864 input_item_AddOption( p_input, s_mrl );
872 /**********************************************************************
873 * RealPath: parse ../, ~ and path stuff
874 **********************************************************************/
875 char *RealPath( const char *psz_src )
879 int i_len = strlen(psz_src);
880 const char sep = DIR_SEP_CHAR;
882 psz_dir = malloc( i_len + 2 );
883 strcpy( psz_dir, psz_src );
885 /* Add a trailing sep to ease the .. step */
886 psz_dir[i_len] = sep;
887 psz_dir[i_len + 1] = '\0';
889 #if (DIR_SEP_CHAR != '/')
890 /* Convert all / to native separator */
892 while( (p = strchr( p, '/' )) != NULL )
898 /* FIXME: this could be O(N) rather than O(N²)... */
899 /* Remove multiple separators and /./ */
901 while( (p = strchr( p, sep )) != NULL )
904 memmove( &p[1], &p[2], strlen(&p[2]) + 1 );
905 else if( p[1] == '.' && p[2] == sep )
906 memmove( &p[1], &p[3], strlen(&p[3]) + 1 );
911 if( psz_dir[0] == '~' )
914 asprintf( &dir, "%s%s", config_GetHomeDir(), psz_dir + 1 );
919 if( strlen(psz_dir) > 2 )
923 while( (p = strchr( p, sep )) != NULL )
925 if( p[-1] == '.' && p[-2] == '.' && p[-3] == sep )
929 if( (q = strrchr( psz_dir, sep )) != NULL )
931 memmove( q + 1, p + 1, strlen(p + 1) + 1 );
936 memmove( psz_dir, p, strlen(p) + 1 );
945 /* Remove trailing sep if there are at least 2 sep in the string
946 * (handles the C:\ stuff) */
947 p = strrchr( psz_dir, sep );
948 if( p != NULL && p[1] == '\0' && p != strchr( psz_dir, sep ) )