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[librvth] verify.cpp: Sanity check: Only the last group can be truncated.

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This commit is contained in:
David Korth 2022-02-12 00:08:01 -05:00
parent b75e883377
commit ca0292fa85
1 changed files with 10 additions and 1 deletions
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11
src/librvth/verify.cpp
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@ -397,8 +397,10 @@ int RvtH::verifyWiiPartitions(unsigned int bank,
const uint8_t *H3_entry = H3_tbl->h3[0];
uint32_t lba = pte->lba_start + BYTES_TO_LBA((uint64_t)be32_to_cpu(pt_hdr->data_offset) << 2);
for (unsigned int g = 0; g < group_count; g++, lba += LBAS_PER_GROUP) {
const bool is_last_group = (g == (group_count - 1));
unsigned int max_sector = 64;
if (last_group_sectors != 0 && g == (group_count - 1)) {
if (last_group_sectors != 0 && is_last_group) {
max_sector = last_group_sectors;
}
@ -414,6 +416,13 @@ int RvtH::verifyWiiPartitions(unsigned int bank,
// result in an assertion. I'm not sure how this
// would work on real hardware, but some SDK update
// images have incomplete groups.
if (!is_last_group) {
// Should not happen if this isn't the last group!
assert(!"Group is truncated, but it isn't the last group.");
aesw_free(aesw);
errno = EIO;
return -EIO;
}
const uint32_t lba_remain = pte->lba_len - lba;
lba_size = reader->read(gdata_enc.get(), lba, lba_remain);
if (lba_size != lba_remain) {