unsigned int rar_get_char(const unsigned char **fd, unpack_data_t *unpack_data)
{
if (unpack_data->in_addr > MAX_BUF_SIZE-30) {
if (!rar_unp_read_buf(fd, unpack_data)) {
rar_dbgmsg("rar_get_char: rar_unp_read_buf FAILED\n");
return -1;
}
}
rar_dbgmsg("rar_get_char = %u\n", unpack_data->in_buf[unpack_data->in_addr]);
return(unpack_data->in_buf[unpack_data->in_addr++]);
}
static void execute_code(unpack_data_t *unpack_data, struct rarvm_prepared_program *prg)
{
rar_dbgmsg("in execute_code\n");
rar_dbgmsg("global_size: %ld\n", prg->global_size);
if (prg->global_size > 0) {
prg->init_r[6] = int64to32(unpack_data->written_size);
rarvm_set_value(0, (unsigned int *)&prg->global_data[0x24],
int64to32(unpack_data->written_size));
rarvm_set_value(0, (unsigned int *)&prg->global_data[0x28],
int64to32(unpack_data->written_size>>32));
rarvm_execute(&unpack_data->rarvm_data, prg);
}
static int read_tables20(int fd, unpack_data_t *unpack_data)
{
unsigned char bit_length[BC20];
unsigned char table[MC20 * 4];
int table_size, n, i, number;
unsigned int bit_field;
rar_dbgmsg("in read_tables20\n");
if (unpack_data->in_addr > unpack_data->read_top-25) {
if (!rar_unp_read_buf(fd, unpack_data)) {
return FALSE;
}
}
bit_field = rar_getbits(unpack_data);
unpack_data->unp_audio_block = (bit_field & 0x8000);
if (!(bit_field & 0x4000)) {
memset(unpack_data->unp_old_table20, 0, sizeof(unpack_data->unp_old_table20));
}
rar_addbits(unpack_data, 2);
if (unpack_data->unp_audio_block) {
unpack_data->unp_channels = ((bit_field>>12) & 3) + 1;
if (unpack_data->unp_cur_channel >= unpack_data->unp_channels) {
unpack_data->unp_cur_channel = 0;
}
rar_addbits(unpack_data, 2);
table_size = MC20 * unpack_data->unp_channels;
} else {
void rar_unp_write_buf_old(unpack_data_t *unpack_data)
{
rar_dbgmsg("in rar_unp_write_buf_old\n");
if (unpack_data->unp_ptr < unpack_data->wr_ptr) {
unp_write_data(unpack_data, &unpack_data->window[unpack_data->wr_ptr],
-unpack_data->wr_ptr & MAXWINMASK);
unp_write_data(unpack_data, unpack_data->window, unpack_data->unp_ptr);
} else {
unp_write_data(unpack_data, &unpack_data->window[unpack_data->wr_ptr],
unpack_data->unp_ptr - unpack_data->wr_ptr);
}
unpack_data->wr_ptr = unpack_data->unp_ptr;
}
static void unp_write_data(unpack_data_t *unpack_data, unsigned char *data, int size)
{
rar_dbgmsg("in unp_write_data length=%d\n", size);
unpack_data->true_size += size;
unpack_data->unp_crc = rar_crc(unpack_data->unp_crc, data, size);
if(unpack_data->max_size) {
if(unpack_data->written_size >= unpack_data->max_size)
return;
if(unpack_data->written_size + size > unpack_data->max_size)
size = unpack_data->max_size - unpack_data->written_size;
}
unpack_data->written_size += size;
}
void *rar_malloc(size_t size)
{
void *alloc;
if(!size || size > RAR_MAX_ALLOCATION) {
rar_dbgmsg("UNRAR: rar_malloc(): Attempt to allocate %lu bytes. Please report to http://bugs.clamav.net\n", size);
return NULL;
}
alloc = malloc(size);
if(!alloc) {
fprintf(stderr, "UNRAR: rar_malloc(): Can't allocate memory (%lu bytes).\n", size);
return NULL;
} else return alloc;
}
