void
download_block(char* paramDir, struct carousel *car, struct module *mod, uint16_t block, unsigned char *data, uint32_t length)
{
/* assert */
if(block >= mod->nblocks)
{
error("download_block: moduleId=%u block=%u nblocks=%u", mod->module_id, block, mod->nblocks);
return;
}
/* have we already got it */
if(mod->got_block[block])
return;
mod->got_block[block] = true;
memcpy(mod->data + (block * mod->block_size), data, length);
mod->blocks_left --;
verbose("download_block: module=%u block=%u left=%u", mod->module_id, block, mod->blocks_left);
/* have we got it all yet */
if(mod->blocks_left == 0)
{
verbose("got module %u (size=%u)", mod->module_id, mod->size);
/* if it doesn't start with 'BIOP' assume it is compressed */
if(strncmp(mod->data, BIOP_MAGIC_STR, BIOP_MAGIC_LEN) != 0)
{
vhexdump(mod->data, mod->size);
uncompress_module(mod);
verbose("uncompressed size=%u", mod->size);
}
if(process_biop(paramDir, car, mod, (struct BIOPMessageHeader *) mod->data, mod->size))
{
/* we can free the data now, keep got_block so we don't download it again */
safe_free(mod->data);
/* delete_module may safe_free it again */
mod->data = NULL;
}
else
{
/* failed to process it, try downloading it again */
mod->blocks_left = mod->nblocks;
/* assumes false == 0 */
bzero(mod->got_block, mod->nblocks * sizeof(bool));
}
}
return;
}
int
process_ddb(char* paramDir, struct carousel *car, struct DownloadDataBlock *ddb, uint32_t downloadId, uint32_t blockLength)
{
unsigned char *block;
struct module *mod;
int processed = 0;
verbose("DownloadDataBlock ");
vverbose("downloadId: %u", downloadId);
verbose("moduleId: %u", ntohs(ddb->moduleId));
vverbose("moduleVersion: %u", ddb->moduleVersion);
verbose("blockNumber: %u", ntohs(ddb->blockNumber));
vverbose("blockLength: %u", blockLength);
block = DDB_blockDataByte(ddb);
vhexdump(block, blockLength);
if((mod = find_module(car, ntohs(ddb->moduleId), ddb->moduleVersion, downloadId)) != NULL) {
download_block(paramDir, car, mod, ntohs(ddb->blockNumber), block, blockLength);
processed = 1;
}
return processed;
}
