static bool rar_uncompress(ar_archive *ar, void *buffer, size_t count)
{
ar_archive_rar *rar = (ar_archive_rar *)ar;
if (rar->entry.method == METHOD_STORE) {
if (!rar_copy_stored(rar, buffer, count))
return false;
}
else if (rar->entry.method == METHOD_FASTEST || rar->entry.method == METHOD_FAST ||
rar->entry.method == METHOD_NORMAL || rar->entry.method == METHOD_GOOD ||
rar->entry.method == METHOD_BEST) {
if (rar->entry.restart_solid && !rar_restart_solid(rar)) {
warn("Failed to produce the required solid decompression state");
return false;
}
if (!rar_uncompress_part(rar, buffer, count))
return false;
}
else {
warn("Unknown compression method %02x", rar->entry.method);
return false;
}
rar->progr.crc = ar_crc32(rar->progr.crc, buffer, count);
if (rar->progr.bytes_done < rar->super.entry_size_uncompressed)
return true;
if (rar->progr.data_left)
log("Compressed block has more data than required");
if (rar->progr.crc != rar->entry.crc) {
warn("Checksum of extracted data doesn't match");
return false;
}
return true;
}
static bool rar_uncompress(ar_archive *ar, void *buffer, size_t count)
{
ar_archive_rar *rar = (ar_archive_rar *)ar;
if (count > ar->entry_size_uncompressed - rar->progress.bytes_done) {
warn("Requesting too much data (%" PRIuPTR " < %" PRIuPTR ")", ar->entry_size_uncompressed - rar->progress.bytes_done, count);
return false;
}
if (rar->entry.method == METHOD_STORE) {
if (!rar_copy_stored(rar, buffer, count))
return false;
}
else if (rar->entry.method == METHOD_FASTEST || rar->entry.method == METHOD_FAST ||
rar->entry.method == METHOD_NORMAL || rar->entry.method == METHOD_GOOD ||
rar->entry.method == METHOD_BEST) {
if (rar->solid.restart && !rar_restart_solid(ar)) {
warn("Failed to produce the required solid decompression state");
return false;
}
if (!rar_uncompress_part(rar, buffer, count))
return false;
}
else {
warn("Unknown compression method %#02x", rar->entry.method);
return false;
}
rar->progress.crc = ar_crc32(rar->progress.crc, buffer, count);
if (rar->progress.bytes_done < ar->entry_size_uncompressed)
return true;
if (rar->progress.data_left)
log("Compressed block has more data than required");
rar->solid.part_done = true;
rar->solid.size_total += rar->progress.bytes_done;
if (rar->progress.crc != rar->entry.crc) {
warn("Checksum of extracted data doesn't match");
return false;
}
return true;
}
