util.c

VLC Player Source Code

/*****************************************************************************
 * util.c : Utility functions for HTTP interface
 *****************************************************************************
 * Copyright (C) 2001-2005 the VideoLAN team
 * $Id: 54ba5c44b8e2dc4058a7bb5a0ca83ed0e8066818 $
 *
 * Authors: Gildas Bazin <[e-mail]>
 *          Laurent Aimar <[e-mail]>
 *          Christophe Massiot <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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 "http.h"
#include "vlc_strings.h"

/****************************************************************************
 * File and directory functions
 ****************************************************************************/

/* ToUrl: create a good name for an url from filename */
char *FileToUrl( char *name, bool *pb_index )
{
    char *url, *p;

    url = p = malloc( strlen( name ) + 1 );

    *pb_index = false;
    if( !url || !p )
    {
        return NULL;
    }

#ifdef WIN32
    while( *name == '\\' || *name == '/' )
#else
    while( *name == '/' )
#endif
    {
        name++;
    }

    *p++ = '/';
    strcpy( p, name );

#ifdef WIN32
    /* convert '\\' into '/' */
    name = p;
    while( *name )
    {
        if( *name == '\\' )
            *name = '/';
        name++;
    }
#endif

    /* index.* -> / */
    if( ( p = strrchr( url, '/' ) ) != NULL )
    {
        if( !strncmp( p, "/index.", 7 ) )
        {
            p[1] = '\0';
            *pb_index = true;
        }
    }
    return url;
}

/* Load a file */
int FileLoad( FILE *f, char **pp_data, int *pi_data )
{
    int i_read;

    /* just load the file */
    *pi_data = 0;
    *pp_data = malloc( 1025 );  /* +1 for \0 */
    while( ( i_read = fread( &(*pp_data)[*pi_data], 1, 1024, f ) ) == 1024 )
    {
        *pi_data += 1024;
        *pp_data = realloc( *pp_data, *pi_data  + 1025 );
    }
    if( i_read > 0 )
    {
        *pi_data += i_read;
    }
    (*pp_data)[*pi_data] = '\0';

    return VLC_SUCCESS;
}

/* Parse a directory and recursively add files */
int ParseDirectory( intf_thread_t *p_intf, char *psz_root,
                        char *psz_dir )
{
    intf_sys_t     *p_sys = p_intf->p_sys;
    char           dir[MAX_DIR_SIZE];
    DIR           *p_dir;
    vlc_acl_t     *p_acl;
    FILE          *file;

    char          *user = NULL;
    char          *password = NULL;

    int           i_dirlen;

    char sep;

#if defined( WIN32 )
    sep = '\\';
#else
    sep = '/';
#endif

    if( ( p_dir = utf8_opendir( psz_dir ) ) == NULL )
    {
        if( errno != ENOENT && errno != ENOTDIR )
            msg_Err( p_intf, "cannot open directory (%s)", psz_dir );
        return VLC_EGENERIC;
    }

    i_dirlen = strlen( psz_dir );
    if( i_dirlen + 10 > MAX_DIR_SIZE )
    {
        msg_Warn( p_intf, "skipping too deep directory (%s)", psz_dir );
        closedir( p_dir );
        return 0;
    }

    msg_Dbg( p_intf, "dir=%s", psz_dir );

    snprintf( dir, sizeof( dir ), "%s%c.access", psz_dir, sep );
    if( ( file = utf8_fopen( dir, "r" ) ) != NULL )
    {
        char line[1024];
        int  i_size;

        msg_Dbg( p_intf, "find .access in dir=%s", psz_dir );

        i_size = fread( line, 1, 1023, file );
        if( i_size > 0 )
        {
            char *p;
            while( i_size > 0 && ( line[i_size-1] == '\n' ||
                   line[i_size-1] == '\r' ) )
            {
                i_size--;
            }

            line[i_size] = '\0';

            p = strchr( line, ':' );
            if( p )
            {
                *p++ = '\0';
                user = strdup( line );
                password = strdup( p );
            }
        }
        msg_Dbg( p_intf, "using user=%s password=%s (read=%d)",
                 user, password, i_size );

        fclose( file );
    }

    snprintf( dir, sizeof( dir ), "%s%c.hosts", psz_dir, sep );
    p_acl = ACL_Create( p_intf, false );
    if( ACL_LoadFile( p_acl, dir ) )
    {
        ACL_Destroy( p_acl );

        struct stat st;
        if( stat( dir, &st ) == 0 )
        {
            closedir( p_dir );
            return VLC_EGENERIC;
        }
        p_acl = NULL;
    }

    for( ;; )
    {
        char *psz_filename;
        /* parse psz_src dir */
        if( ( psz_filename = utf8_readdir( p_dir ) ) == NULL )
        {
            break;
        }

        if( ( psz_filename[0] == '.' )
         || ( i_dirlen + strlen( psz_filename ) > MAX_DIR_SIZE ) )
        {
            free( psz_filename );
            continue;
        }

        snprintf( dir, sizeof( dir ), "%s%c%s", psz_dir, sep, psz_filename );
        free( psz_filename );

        if( ParseDirectory( p_intf, psz_root, dir ) )
        {
            httpd_file_sys_t *f = NULL;
            httpd_handler_sys_t *h = NULL;
            bool b_index;
            char *psz_name, *psz_ext;

            psz_name = FileToUrl( &dir[strlen( psz_root )], &b_index );
            psz_ext = strrchr( dir, '.' );
            if( psz_ext != NULL )
            {
                int i;
                psz_ext++;
                for( i = 0; i < p_sys->i_handlers; i++ )
                    if( !strcmp( p_sys->pp_handlers[i]->psz_ext, psz_ext ) )
                        break;
                if( i < p_sys->i_handlers )
                {
                    f = malloc( sizeof( httpd_handler_sys_t ) );
                    h = (httpd_handler_sys_t *)f;
                    f->b_handler = true;
                    h->p_association = p_sys->pp_handlers[i];
                }
            }
            if( f == NULL )
            {
                f = malloc( sizeof( httpd_file_sys_t ) );
                f->b_handler = false;
            }

            f->p_intf  = p_intf;
            f->p_file = NULL;
            f->p_redir = NULL;
            f->p_redir2 = NULL;
            f->file = strdup (dir);
            f->name = psz_name;
            f->b_html = strstr( &dir[strlen( psz_root )], ".htm" ) || strstr( &dir[strlen( psz_root )], ".xml" ) ? true : false;

            if( !f->name )
            {
                msg_Err( p_intf , "unable to parse directory" );
                closedir( p_dir );
                free( f );
                return( VLC_ENOMEM );
            }
            msg_Dbg( p_intf, "file=%s (url=%s)",
                     f->file, f->name );

            if( !f->b_handler )
            {
                char *psz_type = strdup( "text/html; charset=UTF-8" );
                if( strstr( &dir[strlen( psz_root )], ".xml" ) )
                {
                    char *psz = strstr( psz_type, "html;" );
                    if( psz )
                    {
                        psz[0] = 'x';
                        psz[1] = 'm';
                        psz[2] = 'l';
                        psz[3] = ';';
                        psz[4] = ' ';
                    }
                }
                f->p_file = httpd_FileNew( p_sys->p_httpd_host,
                                           f->name,
                                           f->b_html ? psz_type : NULL,
                                           user, password, p_acl,
                                           HttpCallback, f );
                free( psz_type );
                if( f->p_file != NULL )
                {
                    TAB_APPEND( p_sys->i_files, p_sys->pp_files, f );
                }
            }
            else
            {
                h->p_handler = httpd_HandlerNew( p_sys->p_httpd_host,
                                                 f->name,
                                                 user, password, p_acl,
                                                 HandlerCallback, h );
                if( h->p_handler != NULL )
                {
                    TAB_APPEND( p_sys->i_files, p_sys->pp_files,
                                (httpd_file_sys_t *)h );
                }
            }

            /* for url that ends by / add
             *  - a redirect from rep to rep/
             *  - in case of index.* rep/index.html to rep/ */
            if( f && f->name[strlen(f->name) - 1] == '/' )
            {
                char *psz_redir = strdup( f->name );
                char *p;
                psz_redir[strlen( psz_redir ) - 1] = '\0';

                msg_Dbg( p_intf, "redir=%s -> %s", psz_redir, f->name );
                f->p_redir = httpd_RedirectNew( p_sys->p_httpd_host, f->name, psz_redir );
                free( psz_redir );

                if( b_index && ( p = strstr( f->file, "index." ) ) )
                {
                    if( asprintf( &psz_redir, "%s%s", f->name, p ) != -1 )
                    {
                        msg_Dbg( p_intf, "redir=%s -> %s", psz_redir, f->name );
                        f->p_redir2 = httpd_RedirectNew( p_sys->p_httpd_host,
                                                         f->name, psz_redir );

                        free( psz_redir );
                    }
                }
            }
        }
    }

    free( user );
    free( password );

    ACL_Destroy( p_acl );
    closedir( p_dir );

    return VLC_SUCCESS;
}


/*************************************************************************
 * Playlist stuff
 *************************************************************************/
void PlaylistListNode( intf_thread_t *p_intf, playlist_t *p_pl,
                           playlist_item_t *p_node, char *name, mvar_t *s,
                           int i_depth )
{
    if( p_node != NULL )
    {
        if( p_node->i_children == -1 )
        {
            char value[512];
            char *psz;
            mvar_t *itm = mvar_New( name, "set" );

            if( p_pl->status.p_item && p_node &&
                p_pl->status.p_item->p_input && p_node->p_input &&
                p_pl->status.p_item->p_input->i_id == p_node->p_input->i_id )
            {
                mvar_AppendNewVar( itm, "current", "1" );
            }
            else
            {
                mvar_AppendNewVar( itm, "current", "0" );
            }

            sprintf( value, "%d", p_node->i_id );
            mvar_AppendNewVar( itm, "index", value );

            psz = input_item_GetName( p_node->p_input );
            mvar_AppendNewVar( itm, "name", psz );
            free( psz );

            psz = input_item_GetURI( p_node->p_input );
            mvar_AppendNewVar( itm, "uri", psz );
            free( psz );

            sprintf( value, "Item");
            mvar_AppendNewVar( itm, "type", value );

            sprintf( value, "%d", i_depth );
            mvar_AppendNewVar( itm, "depth", value );

            if( p_node->i_flags & PLAYLIST_RO_FLAG )
            {
                mvar_AppendNewVar( itm, "ro", "ro" );
            }
            else
            {
                mvar_AppendNewVar( itm, "ro", "rw" );
            }

            sprintf( value, "%ld",
                    (long) input_item_GetDuration( p_node->p_input ) );
            mvar_AppendNewVar( itm, "duration", value );

            mvar_AppendVar( s, itm );
        }
        else
        {
            char value[512];
            int i_child;
            mvar_t *itm = mvar_New( name, "set" );

            mvar_AppendNewVar( itm, "name", p_node->p_input->psz_name );
            mvar_AppendNewVar( itm, "uri", p_node->p_input->psz_name );

            sprintf( value, "Node" );
            mvar_AppendNewVar( itm, "type", value );

            sprintf( value, "%d", p_node->i_id );
            mvar_AppendNewVar( itm, "index", value );

            sprintf( value, "%d", p_node->i_children);
            mvar_AppendNewVar( itm, "i_children", value );

            sprintf( value, "%d", i_depth );
            mvar_AppendNewVar( itm, "depth", value );

            if( p_node->i_flags & PLAYLIST_RO_FLAG )
            {
                mvar_AppendNewVar( itm, "ro", "ro" );
            }
            else
            {
                mvar_AppendNewVar( itm, "ro", "rw" );
            }

            mvar_AppendVar( s, itm );

            for (i_child = 0 ; i_child < p_node->i_children ; i_child++)
                PlaylistListNode( p_intf, p_pl,
                                      p_node->pp_children[i_child],
                                      name, s, i_depth + 1);

        }
    }
}

/****************************************************************************
 * Seek command parsing handling
 ****************************************************************************/
void HandleSeek( intf_thread_t *p_intf, char *p_value )
{
    intf_sys_t     *p_sys = p_intf->p_sys;
    vlc_value_t val;
    int i_stock = 0;
    uint64_t i_length;
    int i_value = 0;
    int i_relative = 0;
#define POSITION_ABSOLUTE 12
#define POSITION_REL_FOR 13
#define POSITION_REL_BACK 11
#define VL_TIME_ABSOLUTE 0
#define VL_TIME_REL_FOR 1
#define VL_TIME_REL_BACK -1
    if( p_sys->p_input )
    {
        var_Get( p_sys->p_input, "length", &val );
        i_length = val.i_time;

        while( p_value[0] != '\0' )
        {
            switch(p_value[0])
            {
                case '+':
                {
                    i_relative = VL_TIME_REL_FOR;
                    p_value++;
                    break;
                }
                case '-':
                {
                    i_relative = VL_TIME_REL_BACK;
                    p_value++;
                    break;
                }