http.c

video linux conference

            desc = inf->child[0];

            /* Add a node with name and info */
            set = mvar_New( name, "set" );
            mvar_AppendNewVar( set, "name", el->psz_name );

            for( k = 0; k < desc->i_child; k++ )
            {
                vlm_message_t *ch = desc->child[k];
                if( ch->i_child > 0 )
                {
                    int c;
                    mvar_t *n = mvar_New( ch->psz_name, "set" );

                    for( c = 0; c < ch->i_child; c++ )
                    {
                        if( ch->child[c]->psz_value )
                        {
                            mvar_AppendNewVar( n, ch->child[c]->psz_name, ch->child[c]->psz_value );
                        }
                        else
                        {
                            mvar_t *in = mvar_New( ch->psz_name, ch->child[c]->psz_name );
                            mvar_AppendVar( n, in );
                        }
                    }
                    mvar_AppendVar( set, n );
                }
                else
                {
                    mvar_AppendNewVar( set, ch->psz_name, ch->psz_value );
                }
            }
            vlm_MessageDelete( inf );

            mvar_AppendVar( s, set );
        }
    }
    vlm_MessageDelete( msg );

    return s;
}


static void SSInit( rpn_stack_t * );
static void SSClean( rpn_stack_t * );
static void EvaluateRPN( mvar_t  *, rpn_stack_t *, char * );

static void SSPush  ( rpn_stack_t *, char * );
static char *SSPop  ( rpn_stack_t * );

static void SSPushN ( rpn_stack_t *, int );
static int  SSPopN  ( rpn_stack_t *, mvar_t  * );


/****************************************************************************
 * Macro handling
 ****************************************************************************/
typedef struct
{
    char *id;
    char *param1;
    char *param2;
} macro_t;

static int FileLoad( FILE *f, uint8_t **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;
}

static int MacroParse( macro_t *m, uint8_t *psz_src )
{
    uint8_t *dup = strdup( psz_src );
    uint8_t *src = dup;
    uint8_t *p;
    int     i_skip;

#define EXTRACT( name, l ) \
        src += l;    \
        p = strchr( src, '"' );             \
        if( p )                             \
        {                                   \
            *p++ = '\0';                    \
        }                                   \
        m->name = strdup( src );            \
        if( !p )                            \
        {                                   \
            break;                          \
        }                                   \
        src = p;

    /* init m */
    m->id = NULL;
    m->param1 = NULL;
    m->param2 = NULL;

    /* parse */
    src += 4;

    while( *src )
    {
        while( *src == ' ')
        {
            src++;
        }
        if( !strncmp( src, "id=\"", 4 ) )
        {
            EXTRACT( id, 4 );
        }
        else if( !strncmp( src, "param1=\"", 8 ) )
        {
            EXTRACT( param1, 8 );
        }
        else if( !strncmp( src, "param2=\"", 8 ) )
        {
            EXTRACT( param2, 8 );
        }
        else
        {
            break;
        }
    }
    if( strstr( src, "/>" ) )
    {
        src = strstr( src, "/>" ) + 2;
    }
    else
    {
        src += strlen( src );
    }

    if( m->id == NULL )
    {
        m->id = strdup( "" );
    }
    if( m->param1 == NULL )
    {
        m->param1 = strdup( "" );
    }
    if( m->param2 == NULL )
    {
        m->param2 = strdup( "" );
    }
    i_skip = src - dup;

    free( dup );
    return i_skip;
#undef EXTRACT
}

static void MacroClean( macro_t *m )
{
    free( m->id );
    free( m->param1 );
    free( m->param2 );
}

enum macroType
{
    MVLC_UNKNOWN = 0,
    MVLC_CONTROL,
        MVLC_PLAY,
        MVLC_STOP,
        MVLC_PAUSE,
        MVLC_NEXT,
        MVLC_PREVIOUS,
        MVLC_ADD,
        MVLC_DEL,
        MVLC_EMPTY,
        MVLC_SEEK,
        MVLC_KEEP,
        MVLC_SORT,
        MVLC_MOVE,
        MVLC_VOLUME,
        MVLC_FULLSCREEN,

        MVLC_CLOSE,
        MVLC_SHUTDOWN,

        MVLC_VLM_NEW,
        MVLC_VLM_SETUP,
        MVLC_VLM_DEL,
        MVLC_VLM_PLAY,
        MVLC_VLM_PAUSE,
        MVLC_VLM_STOP,
        MVLC_VLM_SEEK,
        MVLC_VLM_LOAD,
        MVLC_VLM_SAVE,

    MVLC_FOREACH,
    MVLC_IF,
    MVLC_RPN,
    MVLC_STACK,
    MVLC_ELSE,
    MVLC_END,
    MVLC_GET,
    MVLC_SET,
        MVLC_INT,
        MVLC_FLOAT,
        MVLC_STRING,

    MVLC_VALUE
};

static struct
{
    char *psz_name;
    int  i_type;
}
StrToMacroTypeTab [] =
{
    { "control",    MVLC_CONTROL },
        /* player control */
        { "play",           MVLC_PLAY },
        { "stop",           MVLC_STOP },
        { "pause",          MVLC_PAUSE },
        { "next",           MVLC_NEXT },
        { "previous",       MVLC_PREVIOUS },
        { "seek",           MVLC_SEEK },
        { "keep",           MVLC_KEEP },
        { "fullscreen",     MVLC_FULLSCREEN },
        { "volume",         MVLC_VOLUME },

        /* playlist management */
        { "add",            MVLC_ADD },
        { "delete",         MVLC_DEL },
        { "empty",          MVLC_EMPTY },
        { "sort",           MVLC_SORT },
        { "move",           MVLC_MOVE },

        /* admin control */
        { "close",          MVLC_CLOSE },
        { "shutdown",       MVLC_SHUTDOWN },

        /* vlm control */
        { "vlm_new",        MVLC_VLM_NEW },
        { "vlm_setup",      MVLC_VLM_SETUP },
        { "vlm_del",        MVLC_VLM_DEL },
        { "vlm_play",       MVLC_VLM_PLAY },
        { "vlm_pause",      MVLC_VLM_PAUSE },
        { "vlm_stop",       MVLC_VLM_STOP },
        { "vlm_seek",       MVLC_VLM_SEEK },
        { "vlm_load",       MVLC_VLM_LOAD },
        { "vlm_save",       MVLC_VLM_SAVE },

    { "rpn",        MVLC_RPN },
    { "stack",        MVLC_STACK },

    { "foreach",    MVLC_FOREACH },
    { "value",      MVLC_VALUE },

    { "if",         MVLC_IF },
    { "else",       MVLC_ELSE },
    { "end",        MVLC_END },
    { "get",         MVLC_GET },
    { "set",         MVLC_SET },
        { "int",            MVLC_INT },
        { "float",          MVLC_FLOAT },
        { "string",         MVLC_STRING },

    /* end */
    { NULL,         MVLC_UNKNOWN }
};

static int StrToMacroType( char *name )
{
    int i;

    if( !name || *name == '\0')
    {
        return MVLC_UNKNOWN;
    }
    for( i = 0; StrToMacroTypeTab[i].psz_name != NULL; i++ )
    {
        if( !strcmp( name, StrToMacroTypeTab[i].psz_name ) )
        {
            return StrToMacroTypeTab[i].i_type;
        }
    }
    return MVLC_UNKNOWN;
}

static void MacroDo( httpd_file_sys_t *p_args,
                     macro_t *m,
                     uint8_t *p_request, int i_request,
                     uint8_t **pp_data,  int *pi_data,
                     uint8_t **pp_dst )
{
    intf_thread_t  *p_intf = p_args->p_intf;
    intf_sys_t     *p_sys = p_args->p_intf->p_sys;
    char control[512];

#define ALLOC( l ) \
    {               \
        int __i__ = *pp_dst - *pp_data; \
        *pi_data += (l);                  \
        *pp_data = realloc( *pp_data, *pi_data );   \
        *pp_dst = (*pp_data) + __i__;   \
    }
#define PRINT( str ) \
    ALLOC( strlen( str ) + 1 ); \
    *pp_dst += sprintf( *pp_dst, str );

#define PRINTS( str, s ) \
    ALLOC( strlen( str ) + strlen( s ) + 1 ); \
    { \
        char * psz_cur = *pp_dst; \
        *pp_dst += sprintf( *pp_dst, str, s ); \
        while( psz_cur && *psz_cur ) \
        {  \
            /* Prevent script injection */ \
            if( *psz_cur == '<' ) *psz_cur = '*'; \
            if( *psz_cur == '>' ) *psz_cur = '*'; \
            psz_cur++ ; \
        } \
    }

    switch( StrToMacroType( m->id ) )
    {
        case MVLC_CONTROL:
            if( i_request <= 0 )
            {
                break;
            }
            uri_extract_value( p_request, "control", control, 512 );
            if( *m->param1 && !strstr( m->param1, control ) )
            {
                msg_Warn( p_intf, "unauthorized control=%s", control );
                break;
            }
            switch( StrToMacroType( control ) )
            {
                case MVLC_PLAY:
                {
                    int i_item;
                    char item[512];

                    uri_extract_value( p_request, "item", item, 512 );
                    i_item = atoi( item );
                    playlist_Control( p_sys->p_playlist, PLAYLIST_ITEMPLAY,
                                      playlist_ItemGetById( p_sys->p_playlist,
                                      i_item ) );
                    msg_Dbg( p_intf, "requested playlist item: %i", i_item );
                    break;
                }
                case MVLC_STOP:
                    playlist_Control( p_sys->p_playlist, PLAYLIST_STOP);
                    msg_Dbg( p_intf, "requested playlist stop" );
                    break;
                case MVLC_PAUSE:
                    playlist_Control( p_sys->p_playlist, PLAYLIST_PAUSE );
                    msg_Dbg( p_intf, "requested playlist pause" );
                    break;
                case MVLC_NEXT:
                    playlist_Control( p_sys->p_playlist, PLAYLIST_SKIP, 1 );
                    msg_Dbg( p_intf, "requested playlist next" );
                    break;
                case MVLC_PREVIOUS:
                    playlist_Control( p_sys->p_playlist, PLAYLIST_SKIP, -1);
                    msg_Dbg( p_intf, "requested playlist next" );
                    break;
                case MVLC_FULLSCREEN:
                {
                    if( p_sys->p_input )
                    {
                        vout_thread_t *p_vout;
                        p_vout = vlc_object_find( p_sys->p_input,
                                                  VLC_OBJECT_VOUT, FIND_CHILD );

                        if( p_vout )
                        {
                            p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
                            vlc_object_release( p_vout );
                            msg_Dbg( p_intf, "requested fullscreen toggle" );
                        }
                    }
                }
                break;
                case MVLC_SEEK:
                {
                    vlc_value_t val;
                    char value[30];
                    char * p_value;
                    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 )
                    {
                        uri_extract_value( p_request, "seek_value", value, 20 );
                        uri_decode_url_encoded( value );
                        p_value = value;
                        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++;