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sceNpDrm: Relax file extension checks

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Eladash 2020-09-01 17:36:27 +03:00 committed by Megamouse
parent 0b023d4e28
commit 8e2b07ba9e
1 changed files with 22 additions and 4 deletions
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26
rpcs3/Crypto/unedat.cpp
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@ -576,14 +576,32 @@ int validate_npd_hashes(const char* file_name, const u8* klicensee, NPD_HEADER *
int dev_hash_result = 0;
const s32 file_name_length = ::narrow<s32>(std::strlen(file_name), HERE);
std::unique_ptr<u8[]> buf(new u8[0x30 + file_name_length]);
const std::size_t buf_len = 0x30 + file_name_length;
std::unique_ptr<u8[]> buf(new u8[buf_len]);
std::unique_ptr<u8[]> buf_lower(new u8[buf_len]);
std::unique_ptr<u8[]> buf_upper(new u8[buf_len]);
// Build the title buffer (content_id + file_name).
memcpy(buf.get(), npd->content_id, 0x30);
memcpy(buf.get() + 0x30, file_name, file_name_length);
std::memcpy(buf.get(), npd->content_id, 0x30);
std::memcpy(buf.get() + 0x30, file_name, file_name_length);
std::memcpy(buf_lower.get(), buf.get(), buf_len);
std::memcpy(buf_upper.get(), buf.get(), buf_len);
for (std::size_t i = std::basic_string_view<u8>(buf.get() + 0x30, file_name_length).find_last_of('.'); i < buf_len; i++)
{
const u8 c = static_cast<u8>(buf[i]);
buf_upper[i] = std::toupper(c);
buf_lower[i] = std::tolower(c);
}
// Hash with NPDRM_OMAC_KEY_3 and compare with title_hash.
title_hash_result = cmac_hash_compare(NP_OMAC_KEY_3, 0x10, buf.get(), 0x30 + file_name_length, npd->title_hash, 0x10);
// Try to ignore case sensivity with file extension
title_hash_result =
cmac_hash_compare(NP_OMAC_KEY_3, 0x10, buf.get(), buf_len, npd->title_hash, 0x10) ||
cmac_hash_compare(NP_OMAC_KEY_3, 0x10, buf_lower.get(), buf_len, npd->title_hash, 0x10) ||
cmac_hash_compare(NP_OMAC_KEY_3, 0x10, buf_upper.get(), buf_len, npd->title_hash, 0x10);
if (verbose)
{