From c12be04007c783cd49bf74351f56691fa4076926 Mon Sep 17 00:00:00 2001 From: TaurusXin Date: Fri, 22 Mar 2024 12:07:32 +0800 Subject: [PATCH] fix: use utf-8 as filename encoding --- CMakeLists.txt | 4 + aes.h | 20 +- main.cpp | 35 ++-- ncmcrypt.cpp | 528 +++++++++++++++++++++++++++---------------------- ncmcrypt.h | 10 +- platform.h | 7 + win32_init.cpp | 296 +++++++++++++++++++++++++++ 7 files changed, 625 insertions(+), 275 deletions(-) create mode 100644 platform.h create mode 100644 win32_init.cpp diff --git a/CMakeLists.txt b/CMakeLists.txt index 79cd316..327ef8f 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -10,6 +10,10 @@ set(WITH_ZLIB OFF) set(BUILD_TESTING OFF) add_subdirectory(taglib) +if(MSVC) + add_compile_options("$<$:/execution-charset:utf-8>") +endif() + FILE(GLOB HEADERS ./*.h) FILE(GLOB SOURCES ./*.cpp) add_executable(ncmdump diff --git a/aes.h b/aes.h index 5606ebf..dd98f5e 100644 --- a/aes.h +++ b/aes.h @@ -1,9 +1,10 @@ -#pragma once +#pragma once #include #include -class AES { +class AES +{ public: AES(); @@ -16,21 +17,21 @@ private: // int mNb; - //word length of the secret key used in one turn + // word length of the secret key used in one turn int mNk; - //number of turns + // number of turns int mNr; - //the secret key,which can be 16bytes，24bytes or 32bytes + // the secret key,which can be 16bytes，24bytes or 32bytes unsigned char mKey[32]; - //the extended key,which can be 176bytes,208bytes,240bytes + // the extended key,which can be 176bytes,208bytes,240bytes unsigned char mW[60][4]; static unsigned char sBox[]; static unsigned char invSBox[]; - //constant + // constant static unsigned char rcon[]; void setKey(const unsigned char *key); @@ -51,7 +52,6 @@ private: void rotWord(unsigned char w[]); void subWord(unsigned char w[]); - //get the secret key - void getKeyAt(unsigned char key[][4],int i); - + // get the secret key + void getKeyAt(unsigned char key[][4], int i); }; diff --git a/main.cpp b/main.cpp index 31c9145..a0632af 100644 --- a/main.cpp +++ b/main.cpp @@ -6,7 +6,7 @@ #include #if defined(_WIN32) -#include +#include "platform.h" #endif #include "color.h" @@ -25,26 +25,26 @@ void processFile(const fs::path &filePath) { if (fs::exists(filePath) == false) { - std::cerr << BOLDRED << "Error: " << RESET << "file '" << filePath.string() << "' does not exist." << std::endl; + std::cerr << BOLDRED << "Error: " << RESET << "file '" << filePath.u8string() << "' does not exist." << std::endl; return; } try { - NeteaseCrypt crypt(filePath.string()); + NeteaseCrypt crypt(filePath.u8string()); crypt.Dump(); crypt.FixMetadata(); - std::cout << BOLDGREEN << "Done: '" << RESET << crypt.dumpFilepath().string() << "'" << std::endl; + std::cout << BOLDGREEN << "Done: " << RESET << "'" << crypt.dumpFilepath().u8string() << "'" << std::endl; } catch (const std::invalid_argument &e) { - std::cerr << BOLDRED << "Exception: " << RESET << RED << e.what() << RESET << " '" << filePath.string() << "'" << std::endl; - } - catch (...) - { - std::cerr << BOLDRED << "Unexpected exception while processing file: " << RESET << filePath.string() << std::endl; + std::cerr << BOLDRED << "Exception: " << RESET << RED << e.what() << RESET << " '" << filePath.u8string() << "'" << std::endl; } + // catch (...) + // { + // std::cerr << BOLDRED << "Unexpected exception while processing file: " << RESET << filePath.u8string() << std::endl; + // } } void processFilesInFolder(const fs::path &folderPath) @@ -58,22 +58,9 @@ void processFilesInFolder(const fs::path &folderPath) } } -#if defined(_WIN32) -int wmain(int argc, wchar_t *wideargv[]) -#else int main(int argc, char **argv) -#endif { -#if defined(_WIN32) - SetConsoleOutputCP(CP_UTF8); - char **argv = (char **)malloc(sizeof(char *) * argc); - for (int i = 0; i < argc; ++i) - { - int utf8_size = WideCharToMultiByte(CP_UTF8, 0, wideargv[i], -1, NULL, 0, NULL, NULL); - argv[i] = (char *)malloc(utf8_size); - WideCharToMultiByte(CP_UTF8, 0, wideargv[i], -1, argv[i], utf8_size, NULL, NULL); - } -#endif + win32_utf8argv(&argc, &argv); if (argc <= 1) { @@ -115,7 +102,7 @@ int main(int argc, char **argv) } else { - fs::path path(argv[i]); + fs::path path = fs::u8path(argv[i]); files.push_back(path); } } diff --git a/ncmcrypt.cpp b/ncmcrypt.cpp index 0381c43..3dc9617 100644 --- a/ncmcrypt.cpp +++ b/ncmcrypt.cpp @@ -13,338 +13,394 @@ #include #include - #include -const unsigned char NeteaseCrypt::sCoreKey[17] = {0x68, 0x7A, 0x48, 0x52, 0x41, 0x6D, 0x73, 0x6F, 0x35, 0x6B, 0x49, 0x6E, 0x62, 0x61, 0x78, 0x57, 0}; +const unsigned char NeteaseCrypt::sCoreKey[17] = {0x68, 0x7A, 0x48, 0x52, 0x41, 0x6D, 0x73, 0x6F, 0x35, 0x6B, 0x49, 0x6E, 0x62, 0x61, 0x78, 0x57, 0}; const unsigned char NeteaseCrypt::sModifyKey[17] = {0x23, 0x31, 0x34, 0x6C, 0x6A, 0x6B, 0x5F, 0x21, 0x5C, 0x5D, 0x26, 0x30, 0x55, 0x3C, 0x27, 0x28, 0}; const unsigned char NeteaseCrypt::mPng[8] = {0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A}; -static void aesEcbDecrypt(const unsigned char *key, std::string& src, std::string& dst) { - int n, i; +static void aesEcbDecrypt(const unsigned char *key, std::string &src, std::string &dst) +{ + int n, i; - unsigned char out[16]; + unsigned char out[16]; - n = src.length() >> 4; + n = src.length() >> 4; - dst.clear(); + dst.clear(); - AES aes(key); + AES aes(key); - for (i = 0; i < n-1; i++) { - aes.decrypt((unsigned char*)src.c_str() + (i << 4), out); - dst += std::string((char*)out, 16); - } + for (i = 0; i < n - 1; i++) + { + aes.decrypt((unsigned char *)src.c_str() + (i << 4), out); + dst += std::string((char *)out, 16); + } - aes.decrypt((unsigned char*)src.c_str() + (i << 4), out); - char pad = out[15]; - if (pad > 16) { - pad = 0; - } - dst += std::string((char*)out, 16-pad); + aes.decrypt((unsigned char *)src.c_str() + (i << 4), out); + char pad = out[15]; + if (pad > 16) + { + pad = 0; + } + dst += std::string((char *)out, 16 - pad); } -static void replace(std::string& str, const std::string& from, const std::string& to) { - if(from.empty()) - return; - size_t start_pos = 0; - while((start_pos = str.find(from, start_pos)) != std::string::npos) { - str.replace(start_pos, from.length(), to); - start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with 'yx' - } +static void replace(std::string &str, const std::string &from, const std::string &to) +{ + if (from.empty()) + return; + size_t start_pos = 0; + while ((start_pos = str.find(from, start_pos)) != std::string::npos) + { + str.replace(start_pos, from.length(), to); + start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with 'yx' + } } -NeteaseMusicMetadata::~NeteaseMusicMetadata() { - cJSON_Delete(mRaw); +NeteaseMusicMetadata::~NeteaseMusicMetadata() +{ + cJSON_Delete(mRaw); } -NeteaseMusicMetadata::NeteaseMusicMetadata(cJSON* raw) { - if (!raw) { - return; - } +NeteaseMusicMetadata::NeteaseMusicMetadata(cJSON *raw) +{ + if (!raw) + { + return; + } - cJSON *swap; - int artistLen, i; + cJSON *swap; + int artistLen, i; - mRaw = raw; + mRaw = raw; - swap = cJSON_GetObjectItem(raw, "musicName"); - if (swap) { - mName = std::string(cJSON_GetStringValue(swap)); - } + swap = cJSON_GetObjectItem(raw, "musicName"); + if (swap) + { + mName = std::string(cJSON_GetStringValue(swap)); + } - swap = cJSON_GetObjectItem(raw, "album"); - if (swap) { - mAlbum = std::string(cJSON_GetStringValue(swap)); - } + swap = cJSON_GetObjectItem(raw, "album"); + if (swap) + { + mAlbum = std::string(cJSON_GetStringValue(swap)); + } - swap = cJSON_GetObjectItem(raw, "artist"); - if (swap) { - artistLen = cJSON_GetArraySize(swap); + swap = cJSON_GetObjectItem(raw, "artist"); + if (swap) + { + artistLen = cJSON_GetArraySize(swap); - i = 0; - for (i = 0; i < artistLen-1; i++) { - mArtist += std::string(cJSON_GetStringValue(cJSON_GetArrayItem(cJSON_GetArrayItem(swap, i), 0))); - mArtist += "/"; - } - mArtist += std::string(cJSON_GetStringValue(cJSON_GetArrayItem(cJSON_GetArrayItem(swap, i), 0))); - } + i = 0; + for (i = 0; i < artistLen - 1; i++) + { + mArtist += std::string(cJSON_GetStringValue(cJSON_GetArrayItem(cJSON_GetArrayItem(swap, i), 0))); + mArtist += "/"; + } + mArtist += std::string(cJSON_GetStringValue(cJSON_GetArrayItem(cJSON_GetArrayItem(swap, i), 0))); + } - swap = cJSON_GetObjectItem(raw, "bitrate"); - if (swap) { - mBitrate = swap->valueint; - } + swap = cJSON_GetObjectItem(raw, "bitrate"); + if (swap) + { + mBitrate = swap->valueint; + } - swap = cJSON_GetObjectItem(raw, "duration"); - if (swap) { - mDuration = swap->valueint; - } + swap = cJSON_GetObjectItem(raw, "duration"); + if (swap) + { + mDuration = swap->valueint; + } - swap = cJSON_GetObjectItem(raw, "format"); - if (swap) { - mFormat = std::string(cJSON_GetStringValue(swap)); - } + swap = cJSON_GetObjectItem(raw, "format"); + if (swap) + { + mFormat = std::string(cJSON_GetStringValue(swap)); + } } -bool NeteaseCrypt::openFile(std::filesystem::path const& path) { - mFile.open(path, std::ios::in | std::ios::binary); - if (!mFile.is_open()) { - return false; - } else { - return true; - } +bool NeteaseCrypt::openFile(std::string const &path) +{ + mFile.open(std::filesystem::u8path(path), std::ios::in | std::ios::binary); + if (!mFile.is_open()) + { + return false; + } + else + { + return true; + } } -bool NeteaseCrypt::isNcmFile() { - unsigned int header; +bool NeteaseCrypt::isNcmFile() +{ + unsigned int header; - mFile.read(reinterpret_cast(&header), sizeof(header)); - if (header != (unsigned int)0x4e455443) { - return false; - } + mFile.read(reinterpret_cast(&header), sizeof(header)); + if (header != (unsigned int)0x4e455443) + { + return false; + } - mFile.read(reinterpret_cast(&header), sizeof(header)); - if (header != (unsigned int)0x4d414446) { - return false; - } + mFile.read(reinterpret_cast(&header), sizeof(header)); + if (header != (unsigned int)0x4d414446) + { + return false; + } - return true; + return true; } -int NeteaseCrypt::read(char *s, std::streamsize n) { - mFile.read(s, n); +int NeteaseCrypt::read(char *s, std::streamsize n) +{ + mFile.read(s, n); - int gcount = mFile.gcount(); + int gcount = mFile.gcount(); - if (gcount <= 0) { - throw std::invalid_argument("Can't read file"); - } + if (gcount <= 0) + { + throw std::invalid_argument("Can't read file"); + } - return gcount; + return gcount; } -void NeteaseCrypt::buildKeyBox(unsigned char *key, int keyLen) { - int i; - for (i = 0; i < 256; ++i) { - mKeyBox[i] = (unsigned char)i; - } +void NeteaseCrypt::buildKeyBox(unsigned char *key, int keyLen) +{ + int i; + for (i = 0; i < 256; ++i) + { + mKeyBox[i] = (unsigned char)i; + } - unsigned char swap = 0; - unsigned char c = 0; - unsigned char last_byte = 0; - unsigned char key_offset = 0; + unsigned char swap = 0; + unsigned char c = 0; + unsigned char last_byte = 0; + unsigned char key_offset = 0; - for (i = 0; i < 256; ++i) - { - swap = mKeyBox[i]; - c = ((swap + last_byte + key[key_offset++]) & 0xff); - if (key_offset >= keyLen) key_offset = 0; - mKeyBox[i] = mKeyBox[c]; mKeyBox[c] = swap; - last_byte = c; - } + for (i = 0; i < 256; ++i) + { + swap = mKeyBox[i]; + c = ((swap + last_byte + key[key_offset++]) & 0xff); + if (key_offset >= keyLen) + key_offset = 0; + mKeyBox[i] = mKeyBox[c]; + mKeyBox[c] = swap; + last_byte = c; + } } -std::string NeteaseCrypt::mimeType(std::string& data) { - if (memcmp(data.c_str(), mPng, 8) == 0) { - return std::string("image/png"); - } +std::string NeteaseCrypt::mimeType(std::string &data) +{ + if (memcmp(data.c_str(), mPng, 8) == 0) + { + return std::string("image/png"); + } - return std::string("image/jpeg"); + return std::string("image/jpeg"); } -void NeteaseCrypt::FixMetadata() { - if (mDumpFilepath.string().length() <= 0) { - throw std::invalid_argument("must dump before"); - } +void NeteaseCrypt::FixMetadata() +{ - TagLib::File *audioFile; - TagLib::Tag *tag; - TagLib::ByteVector vector(mImageData.c_str(), mImageData.length()); + TagLib::File *audioFile; + TagLib::Tag *tag; + TagLib::ByteVector vector(mImageData.c_str(), mImageData.length()); - if (mFormat == NeteaseCrypt::MP3) { - audioFile = new TagLib::MPEG::File(mDumpFilepath.c_str()); - tag = dynamic_cast(audioFile)->ID3v2Tag(true); + if (mFormat == NeteaseCrypt::MP3) + { + audioFile = new TagLib::MPEG::File(mDumpFilepath.c_str()); + tag = dynamic_cast(audioFile)->ID3v2Tag(true); - if (mImageData.length() > 0) { - TagLib::ID3v2::AttachedPictureFrame *frame = new TagLib::ID3v2::AttachedPictureFrame; + if (mImageData.length() > 0) + { + TagLib::ID3v2::AttachedPictureFrame *frame = new TagLib::ID3v2::AttachedPictureFrame; - frame->setMimeType(mimeType(mImageData)); - frame->setPicture(vector); + frame->setMimeType(mimeType(mImageData)); + frame->setPicture(vector); - dynamic_cast(tag)->addFrame(frame); - } - } else if (mFormat == NeteaseCrypt::FLAC) { - audioFile = new TagLib::FLAC::File(mDumpFilepath.c_str()); - tag = audioFile->tag(); + dynamic_cast(tag)->addFrame(frame); + } + } + else if (mFormat == NeteaseCrypt::FLAC) + { + audioFile = new TagLib::FLAC::File(mDumpFilepath.c_str()); + tag = audioFile->tag(); - if (mImageData.length() > 0) { - TagLib::FLAC::Picture *cover = new TagLib::FLAC::Picture; - cover->setMimeType(mimeType(mImageData)); - cover->setType(TagLib::FLAC::Picture::FrontCover); - cover->setData(vector); + if (mImageData.length() > 0) + { + TagLib::FLAC::Picture *cover = new TagLib::FLAC::Picture; + cover->setMimeType(mimeType(mImageData)); + cover->setType(TagLib::FLAC::Picture::FrontCover); + cover->setData(vector); - dynamic_cast(audioFile)->addPicture(cover); - } - } + dynamic_cast(audioFile)->addPicture(cover); + } + } - if (mMetaData != NULL) { - tag->setTitle(TagLib::String(mMetaData->name(), TagLib::String::UTF8)); - tag->setArtist(TagLib::String(mMetaData->artist(), TagLib::String::UTF8)); - tag->setAlbum(TagLib::String(mMetaData->album(), TagLib::String::UTF8)); - } + if (mMetaData != NULL) + { + tag->setTitle(TagLib::String(mMetaData->name(), TagLib::String::UTF8)); + tag->setArtist(TagLib::String(mMetaData->artist(), TagLib::String::UTF8)); + tag->setAlbum(TagLib::String(mMetaData->album(), TagLib::String::UTF8)); + } - tag->setComment(TagLib::String("Create by netease copyright protected dump tool. author 5L", TagLib::String::UTF8)); + tag->setComment(TagLib::String("Create by netease copyright protected dump tool. author 5L", TagLib::String::UTF8)); - audioFile->save(); + audioFile->save(); } -void NeteaseCrypt::Dump() { - mDumpFilepath = mFilepath; +void NeteaseCrypt::Dump() +{ + mDumpFilepath = std::filesystem::u8path(mFilepath); - std::vector buffer(0x8000); + std::vector buffer(0x8000); - std::ofstream output; + std::ofstream output; - while (!mFile.eof()) { - int n = read((char*)buffer.data(), buffer.size()); + while (!mFile.eof()) + { + int n = read((char *)buffer.data(), buffer.size()); - for (int i = 0; i < n; i++) { - int j = (i + 1) & 0xff; - buffer[i] ^= mKeyBox[(mKeyBox[j] + mKeyBox[(mKeyBox[j] + j) & 0xff]) & 0xff]; - } + for (int i = 0; i < n; i++) + { + int j = (i + 1) & 0xff; + buffer[i] ^= mKeyBox[(mKeyBox[j] + mKeyBox[(mKeyBox[j] + j) & 0xff]) & 0xff]; + } - if (!output.is_open()) { - // identify format - // ID3 format mp3 - if (buffer[0] == 0x49 && buffer[1] == 0x44 && buffer[2] == 0x33) { - mDumpFilepath.replace_extension(".mp3"); - mFormat = NeteaseCrypt::MP3; - } else { - mDumpFilepath.replace_extension(".flac"); - mFormat = NeteaseCrypt::FLAC; - } + if (!output.is_open()) + { + // identify format + // ID3 format mp3 + if (buffer[0] == 0x49 && buffer[1] == 0x44 && buffer[2] == 0x33) + { + mDumpFilepath = mDumpFilepath.replace_extension("mp3"); + mFormat = NeteaseCrypt::MP3; + } + else + { + mDumpFilepath = mDumpFilepath.replace_extension("flac"); + mFormat = NeteaseCrypt::FLAC; + } - output.open(mDumpFilepath, output.out | output.binary); - } + output.open(mDumpFilepath, output.out | output.binary); + } - output.write((char*)buffer.data(), n); - } + output.write((char *)buffer.data(), n); + } - output.flush(); - output.close(); + output.flush(); + output.close(); } -NeteaseCrypt::~NeteaseCrypt() { - if (mMetaData != NULL) { - delete mMetaData; - } +NeteaseCrypt::~NeteaseCrypt() +{ + if (mMetaData != NULL) + { + delete mMetaData; + } - mFile.close(); + mFile.close(); } -NeteaseCrypt::NeteaseCrypt(std::filesystem::path const& path) { - if (!openFile(path)) { - throw std::invalid_argument("Can't open file"); - } +NeteaseCrypt::NeteaseCrypt(std::string const &path) +{ + if (!openFile(path)) + { + throw std::invalid_argument("Can't open file"); + } - if (!isNcmFile()) { - throw std::invalid_argument("Not netease protected file"); - } + if (!isNcmFile()) + { + throw std::invalid_argument("Not netease protected file"); + } - if (!mFile.seekg(2, mFile.cur)) { - throw std::invalid_argument("Can't seek file"); - } + if (!mFile.seekg(2, mFile.cur)) + { + throw std::invalid_argument("Can't seek file"); + } - mFilepath = path; + mFilepath = path; - unsigned int n; - read(reinterpret_cast(&n), sizeof(n)); + unsigned int n; + read(reinterpret_cast(&n), sizeof(n)); - if (n <= 0) { - throw std::invalid_argument("Broken NCM file"); - } + if (n <= 0) + { + throw std::invalid_argument("Broken NCM file"); + } - std::vector keydata(n); - read(keydata.data(), n); + std::vector keydata(n); + read(keydata.data(), n); - for (size_t i = 0; i < n; i++) { - keydata[i] ^= 0x64; - } + for (size_t i = 0; i < n; i++) + { + keydata[i] ^= 0x64; + } - std::string rawKeyData(keydata.begin(), keydata.end()); - std::string mKeyData; + std::string rawKeyData(keydata.begin(), keydata.end()); + std::string mKeyData; - aesEcbDecrypt(sCoreKey, rawKeyData, mKeyData); + aesEcbDecrypt(sCoreKey, rawKeyData, mKeyData); - buildKeyBox((unsigned char*)mKeyData.c_str()+17, mKeyData.length()-17); + buildKeyBox((unsigned char *)mKeyData.c_str() + 17, mKeyData.length() - 17); - read(reinterpret_cast(&n), sizeof(n)); + read(reinterpret_cast(&n), sizeof(n)); - if (n <= 0) { - std::cout << "[Warn] " << path.string() << " missing metadata infomation can't fix some infomation!" << std::endl; + if (n <= 0) + { + std::cout << "[Warn] " << path << " missing metadata infomation can't fix some infomation!" << std::endl; - mMetaData = NULL; - } else { - std::vector modifyData(n); - read(modifyData.data(), n); + mMetaData = NULL; + } + else + { + std::vector modifyData(n); + read(modifyData.data(), n); - for (size_t i = 0; i < n; i++) { - modifyData[i] ^= 0x63; - } + for (size_t i = 0; i < n; i++) + { + modifyData[i] ^= 0x63; + } - std::string swapModifyData; - std::string modifyOutData; - std::string modifyDecryptData; + std::string swapModifyData; + std::string modifyOutData; + std::string modifyDecryptData; - swapModifyData = std::string(modifyData.begin() + 22, modifyData.end()); + swapModifyData = std::string(modifyData.begin() + 22, modifyData.end()); - // escape `163 key(Don't modify):` - Base64::Decode(swapModifyData, modifyOutData); + // escape `163 key(Don't modify):` + Base64::Decode(swapModifyData, modifyOutData); - aesEcbDecrypt(sModifyKey, modifyOutData, modifyDecryptData); + aesEcbDecrypt(sModifyKey, modifyOutData, modifyDecryptData); - // escape `music:` - modifyDecryptData = std::string(modifyDecryptData.begin()+6, modifyDecryptData.end()); + // escape `music:` + modifyDecryptData = std::string(modifyDecryptData.begin() + 6, modifyDecryptData.end()); - // std::cout << modifyDecryptData << std::endl; + // std::cout << modifyDecryptData << std::endl; - mMetaData = new NeteaseMusicMetadata(cJSON_Parse(modifyDecryptData.c_str())); - } + mMetaData = new NeteaseMusicMetadata(cJSON_Parse(modifyDecryptData.c_str())); + } - // skip crc32 & unuse charset - if (!mFile.seekg(9, mFile.cur)) { - throw std::invalid_argument("can't seek file"); - } + // skip crc32 & unuse charset + if (!mFile.seekg(9, mFile.cur)) + { + throw std::invalid_argument("can't seek file"); + } - read(reinterpret_cast(&n), sizeof(n)); + read(reinterpret_cast(&n), sizeof(n)); - if (n > 0) { - char *imageData = (char*)malloc(n); - read(imageData, n); + if (n > 0) + { + char *imageData = (char *)malloc(n); + read(imageData, n); - mImageData = std::string(imageData, n); - } else { - std::cout << "[Warn] " << path.string() << " missing album can't fix album image!" << std::endl; - } + mImageData = std::string(imageData, n); + } + else + { + std::cout << "[Warn] " << path << " missing album can't fix album image!" << std::endl; + } } diff --git a/ncmcrypt.h b/ncmcrypt.h index a8997a8..d126dbe 100644 --- a/ncmcrypt.h +++ b/ncmcrypt.h @@ -42,7 +42,7 @@ private: enum NcmFormat { MP3, FLAC }; private: - std::filesystem::path mFilepath; + std::string mFilepath; std::filesystem::path mDumpFilepath; NcmFormat mFormat; std::string mImageData; @@ -52,17 +52,17 @@ private: private: bool isNcmFile(); - bool openFile(std::filesystem::path const&); + bool openFile(std::string const&); int read(char *s, std::streamsize n); void buildKeyBox(unsigned char *key, int keyLen); std::string mimeType(std::string& data); public: - const std::filesystem::path& filepath() const { return mFilepath; } - const std::filesystem::path& dumpFilepath() const { return mDumpFilepath; } + const std::string& filepath() const { return mFilepath; } + const std::filesystem::path dumpFilepath() const { return mDumpFilepath; } public: - NeteaseCrypt(std::filesystem::path const&); + NeteaseCrypt(std::string const&); ~NeteaseCrypt(); public: diff --git a/platform.h b/platform.h new file mode 100644 index 0000000..f696205 --- /dev/null +++ b/platform.h @@ -0,0 +1,7 @@ +# ifdef _WIN32 +/* + * Win32-specific argv initialization that splits OS-supplied UNICODE + * command line string to array of UTF8-encoded strings. + */ +void win32_utf8argv(int *argc, char **argv[]); +# endif \ No newline at end of file diff --git a/win32_init.cpp b/win32_init.cpp new file mode 100644 index 0000000..e5db812 --- /dev/null +++ b/win32_init.cpp @@ -0,0 +1,296 @@ +#include +#include +#include +#include +#include "platform.h" + +#if defined(CP_UTF8) + +static UINT saved_cp; +static int newargc; +static char **newargv; + +static void cleanup(void) +{ + int i; + + SetConsoleOutputCP(saved_cp); + + for (i = 0; i < newargc; i++) + free(newargv[i]); + + free(newargv); +} + +/* + * Incrementally [re]allocate newargv and keep it NULL-terminated. + */ +static int validate_argv(int argc) +{ + static int size = 0; + + if (argc >= size) { + char **ptr; + + while (argc >= size) + size += 64; + + ptr = (char**)realloc(newargv, size * sizeof(newargv[0])); + if (ptr == NULL) + return 0; + + (newargv = ptr)[argc] = NULL; + } else { + newargv[argc] = NULL; + } + + return 1; +} + +static int process_glob(WCHAR *wstr, int wlen) +{ + int i, slash, udlen; + WCHAR saved_char; + WIN32_FIND_DATAW data; + HANDLE h; + + /* + * Note that we support wildcard characters only in filename part + * of the path, and not in directories. Windows users are used to + * this, that's why recursive glob processing is not implemented. + */ + /* + * Start by looking for last slash or backslash, ... + */ + for (slash = 0, i = 0; i < wlen; i++) + if (wstr[i] == L'/' || wstr[i] == L'\\') + slash = i + 1; + /* + * ... then look for asterisk or question mark in the file name. + */ + for (i = slash; i < wlen; i++) + if (wstr[i] == L'*' || wstr[i] == L'?') + break; + + if (i == wlen) + return 0; /* definitely not a glob */ + + saved_char = wstr[wlen]; + wstr[wlen] = L'\0'; + h = FindFirstFileW(wstr, &data); + wstr[wlen] = saved_char; + if (h == INVALID_HANDLE_VALUE) + return 0; /* not a valid glob, just pass... */ + + if (slash) + udlen = WideCharToMultiByte(CP_UTF8, 0, wstr, slash, + NULL, 0, NULL, NULL); + else + udlen = 0; + + do { + int uflen; + char *arg; + + /* + * skip over . and .. + */ + if (data.cFileName[0] == L'.') { + if ((data.cFileName[1] == L'\0') || + (data.cFileName[1] == L'.' && data.cFileName[2] == L'\0')) + continue; + } + + if (!validate_argv(newargc + 1)) + break; + + /* + * -1 below means "scan for trailing '\0' *and* count it", + * so that |uflen| covers even trailing '\0'. + */ + uflen = WideCharToMultiByte(CP_UTF8, 0, data.cFileName, -1, + NULL, 0, NULL, NULL); + + arg = (char*)malloc(udlen + uflen); + if (arg == NULL) + break; + + if (udlen) + WideCharToMultiByte(CP_UTF8, 0, wstr, slash, + arg, udlen, NULL, NULL); + + WideCharToMultiByte(CP_UTF8, 0, data.cFileName, -1, + arg + udlen, uflen, NULL, NULL); + + newargv[newargc++] = arg; + } while (FindNextFileW(h, &data)); + + CloseHandle(h); + + return 1; +} + +void win32_utf8argv(int *argc, char **argv[]) +{ + const WCHAR *wcmdline; + WCHAR *warg, *wend, *p; + int wlen, ulen, valid = 1; + char *arg; + + newargc = 0; + newargv = NULL; + if (!validate_argv(newargc)) + return; + + wcmdline = GetCommandLineW(); + if (wcmdline == NULL) return; + + /* + * make a copy of the command line, since we might have to modify it... + */ + wlen = wcslen(wcmdline); + p = (WCHAR*)_alloca((wlen + 1) * sizeof(WCHAR)); + wcscpy(p, wcmdline); + + while (*p != L'\0') { + int in_quote = 0; + + if (*p == L' ' || *p == L'\t') { + p++; /* skip over whitespace */ + continue; + } + + /* + * Note: because we may need to fiddle with the number of backslashes, + * the argument string is copied into itself. This is safe because + * the number of characters will never expand. + */ + warg = wend = p; + while (*p != L'\0' + && (in_quote || (*p != L' ' && *p != L'\t'))) { + switch (*p) { + case L'\\': + /* + * Microsoft documentation on how backslashes are treated + * is: + * + * + Backslashes are interpreted literally, unless they + * immediately precede a double quotation mark. + * + If an even number of backslashes is followed by a double + * quotation mark, one backslash is placed in the argv array + * for every pair of backslashes, and the double quotation + * mark is interpreted as a string delimiter. + * + If an odd number of backslashes is followed by a double + * quotation mark, one backslash is placed in the argv array + * for every pair of backslashes, and the double quotation + * mark is "escaped" by the remaining backslash, causing a + * literal double quotation mark (") to be placed in argv. + * + * Ref: https://msdn.microsoft.com/en-us/library/17w5ykft.aspx + * + * Though referred page doesn't mention it, multiple qouble + * quotes are also special. Pair of double quotes in quoted + * string is counted as single double quote. + */ + { + const WCHAR *q = p; + int i; + + while (*p == L'\\') + p++; + + if (*p == L'"') { + int i; + + for (i = (p - q) / 2; i > 0; i--) + *wend++ = L'\\'; + + /* + * if odd amount of backslashes before the quote, + * said quote is part of the argument, not a delimiter + */ + if ((p - q) % 2 == 1) + *wend++ = *p++; + } else { + for (i = p - q; i > 0; i--) + *wend++ = L'\\'; + } + } + break; + case L'"': + /* + * Without the preceding backslash (or when preceded with an + * even number of backslashes), the double quote is a simple + * string delimiter and just slightly change the parsing state + */ + if (in_quote && p[1] == L'"') + *wend++ = *p++; + else + in_quote = !in_quote; + p++; + break; + default: + /* + * Any other non-delimiter character is just taken verbatim + */ + *wend++ = *p++; + } + } + + wlen = wend - warg; + + if (wlen == 0 || !process_glob(warg, wlen)) { + if (!validate_argv(newargc + 1)) { + valid = 0; + break; + } + + ulen = 0; + if (wlen > 0) { + ulen = WideCharToMultiByte(CP_UTF8, 0, warg, wlen, + NULL, 0, NULL, NULL); + if (ulen <= 0) + continue; + } + + arg = (char*)malloc(ulen + 1); + if (arg == NULL) { + valid = 0; + break; + } + + if (wlen > 0) + WideCharToMultiByte(CP_UTF8, 0, warg, wlen, + arg, ulen, NULL, NULL); + arg[ulen] = '\0'; + + newargv[newargc++] = arg; + } + } + + if (valid) { + saved_cp = GetConsoleOutputCP(); + SetConsoleOutputCP(CP_UTF8); + + *argc = newargc; + *argv = newargv; + + atexit(cleanup); + } else if (newargv != NULL) { + int i; + + for (i = 0; i < newargc; i++) + free(newargv[i]); + + free(newargv); + + newargc = 0; + newargv = NULL; + } + + return; +} +#else +void win32_utf8argv(int *argc, char **argv[]) +{ return; } +#endif \ No newline at end of file