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COMMON: Add functions to get Mac Finder metadata such as type/creator codes.

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This commit is contained in:
elasota 2022-11-21 21:05:06 -05:00 committed by Eugene Sandulenko
parent fd10cf8122
commit 78d26927a8
2 changed files with 177 additions and 2 deletions
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154
common/macresman.cpp
View File

@ -82,10 +82,17 @@ MacFinderExtendedInfoData MacFinderExtendedInfo::toData() const {
#define MBI_ZERO1 0
#define MBI_NAMELEN 1
#define MBI_TYPE 65
#define MBI_CREATOR 69
#define MBI_FLAGSHIGH 73
#define MBI_ZERO2 74
#define MBI_POSY 75
#define MBI_POSX 77
#define MBI_FOLDERID 79
#define MBI_ZERO3 82
#define MBI_DFLEN 83
#define MBI_RFLEN 87
#define MBI_FLAGSLOW 101
#define MAXNAMELEN 63
MacResManager::MacResManager() {
@ -305,6 +312,81 @@ bool MacResManager::exists(const Path &fileName) {
return false;
}
bool MacResManager::getFileFinderInfo(const Path &fileName, Archive &archive, MacFinderInfo &outFinderInfo) {
MacFinderExtendedInfo fxinfo;
return getFileFinderInfo(fileName, archive, outFinderInfo, fxinfo);
}
bool MacResManager::getFileFinderInfo(const Path &fileName, Archive &archive, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo) {
// Prefer standalone .finf files first (especially since this can avoid decompressing entire files from slow archive formats like StuffIt Installer)
Common::ScopedPtr<SeekableReadStream> stream(archive.createReadStreamForMember(fileName.append(".finf")));
if (stream) {
MacFinderInfoData finfoData;
MacFinderExtendedInfoData fxinfoData;
uint32 finfoSize = stream->read(&finfoData, sizeof(finfoData));
uint32 fxinfoSize = stream->read(&fxinfoData, sizeof(fxinfoData));
if (finfoSize == sizeof(MacFinderInfoData)) {
outFinderInfo = MacFinderInfo(finfoData);
if (fxinfoSize == sizeof(MacFinderExtendedInfoData)) {
outFinderExtendedInfo = MacFinderExtendedInfo(fxinfoData);
} else {
outFinderExtendedInfo = MacFinderExtendedInfo();
if (fxinfoSize != 0)
warning("Finder extended info metadata file was too small");
}
return true;
} else if (finfoSize != 0) {
warning("Finder info metadata file was too small");
}
}
// Might have AppleDouble in the resource file
stream.reset();
stream.reset(archive.createReadStreamForMember(fileName.append(".rsrc")));
if (stream) {
bool appleDouble = (stream->readUint32BE() == 0x00051607);
stream->seek(0);
if (appleDouble && getFinderInfoFromAppleDouble(stream.get(), outFinderInfo, outFinderExtendedInfo))
return true;
}
// Try for AppleDouble using Apple's naming
stream.reset();
stream.reset(archive.createReadStreamForMember(constructAppleDoubleName(fileName)));
if (stream && getFinderInfoFromAppleDouble(stream.get(), outFinderInfo, outFinderExtendedInfo))
return true;
// Check .bin for MacBinary next
stream.reset();
stream.reset(archive.createReadStreamForMember(fileName.append(".bin")));
if (stream && getFinderInfoFromMacBinary(stream.get(), outFinderInfo, outFinderExtendedInfo))
return true;
// Check if the file is in MacBinary format
stream.reset();
stream.reset(archive.createReadStreamForMember(fileName));
if (stream && getFinderInfoFromMacBinary(stream.get(), outFinderInfo, outFinderExtendedInfo))
return true;
// No metadata
return false;
}
bool MacResManager::getFileFinderInfo(const Path &fileName, MacFinderInfo &outFinderInfo) {
MacFinderExtendedInfo fxinfo;
return getFileFinderInfo(fileName, outFinderInfo, fxinfo);
}
bool MacResManager::getFileFinderInfo(const Path &fileName, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo) {
return getFileFinderInfo(fileName, SearchMan, outFinderInfo, outFinderExtendedInfo);
}
void MacResManager::listFiles(StringArray &files, const String &pattern) {
// Base names discovered so far.
typedef HashMap<String, bool, IgnoreCase_Hash, IgnoreCase_EqualTo> BaseNameSet;
@ -403,8 +485,71 @@ bool MacResManager::loadFromAppleDouble(SeekableReadStream *stream) {
return false;
}
bool MacResManager::isMacBinary(SeekableReadStream &stream) {
bool MacResManager::getFinderInfoFromMacBinary(SeekableReadStream *stream, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo) {
byte infoHeader[MBI_INFOHDR];
if (!readAndValidateMacBinaryHeader(*stream, infoHeader))
return false;
MacFinderInfo finfo;
// Parse fields
memcpy(finfo.type, infoHeader + MBI_TYPE, 4);
memcpy(finfo.creator, infoHeader + MBI_CREATOR, 4);
finfo.flags = (infoHeader[MBI_FLAGSHIGH] << 8) + infoHeader[MBI_FLAGSLOW];
finfo.position.x = READ_BE_INT16(infoHeader + MBI_POSX);
finfo.position.y = READ_BE_INT16(infoHeader + MBI_POSY);
finfo.windowID = READ_BE_INT16(infoHeader + MBI_FOLDERID);
outFinderInfo = finfo;
outFinderExtendedInfo = MacFinderExtendedInfo();
return true;
}
bool MacResManager::getFinderInfoFromAppleDouble(SeekableReadStream *stream, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo) {
if (!stream)
return false;
if (stream->readUint32BE() != 0x00051607) // tag
return false;
stream->skip(20); // version + home file system
uint16 entryCount = stream->readUint16BE();
uint32 finderInfoPos = 0;
uint32 finderInfoLength = 0;
for (uint16 i = 0; i < entryCount; i++) {
uint32 id = stream->readUint32BE();
uint32 offset = stream->readUint32BE();
uint32 length = stream->readUint32BE(); // length
if (id == 9) {
finderInfoPos = offset;
finderInfoLength = length;
break;
}
}
if (finderInfoLength < sizeof(MacFinderInfoData) + sizeof(MacFinderExtendedInfoData))
return false;
if (!stream->seek(finderInfoPos))
return false;
MacFinderInfoData finfo;
MacFinderExtendedInfoData fxinfo;
if (stream->read(&finfo, sizeof(finfo)) != sizeof(finfo) || stream->read(&fxinfo, sizeof(fxinfo)) != sizeof(fxinfo))
return false;
outFinderInfo = MacFinderInfo(finfo);
outFinderExtendedInfo = MacFinderExtendedInfo(fxinfo);
return true;
}
bool MacResManager::readAndValidateMacBinaryHeader(SeekableReadStream &stream, byte (&infoHeader)[MBI_INFOHDR]) {
int resForkOffset = -1;
if (stream.read(infoHeader, MBI_INFOHDR) != MBI_INFOHDR)
@ -427,7 +572,7 @@ bool MacResManager::isMacBinary(SeekableReadStream &stream) {
uint32 dataSizePad = (((dataSize + 127) >> 7) << 7);
// Files produced by ISOBuster are not padded, thus, compare with the actual size
//uint32 rsrcSizePad = (((rsrcSize + 127) >> 7) << 7);
// uint32 rsrcSizePad = (((rsrcSize + 127) >> 7) << 7);
// Length check
if (MBI_INFOHDR + dataSizePad + rsrcSize <= (uint32)stream.size()) {
@ -441,6 +586,11 @@ bool MacResManager::isMacBinary(SeekableReadStream &stream) {
return true;
}
bool MacResManager::isMacBinary(SeekableReadStream &stream) {
byte infoHeader[MBI_INFOHDR];
return readAndValidateMacBinaryHeader(stream, infoHeader);
}
bool MacResManager::isRawFork(SeekableReadStream &stream) {
// TODO: Is there a better way to detect whether this is a raw fork?
const uint32 dataOffset = stream.readUint32BE();

25
common/macresman.h
View File

@ -166,6 +166,19 @@ public:
*/
static bool exists(const Path &fileName);
/**
* Attempt to read the Mac Finder info metadata for a file path.
* @param fileName The base file name of the file
* @param archive The archive to search in
* @param outFinderInfo The loaded and parsed Finder info
* @param outFinderExtendedInfo The loaded and parsed Finder extended info
* @return True if finder info was available for a path, false if not
*/
static bool getFileFinderInfo(const Path &fileName, Archive &archive, MacFinderInfo &outFinderInfo);
static bool getFileFinderInfo(const Path &fileName, Archive &archive, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo);
static bool getFileFinderInfo(const Path &fileName, MacFinderInfo &outFinderInfo);
static bool getFileFinderInfo(const Path &fileName, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo);
/**
* List all filenames matching pattern for opening with open().
*
@ -302,6 +315,18 @@ private:
bool loadFromRawFork(SeekableReadStream *stream);
bool loadFromAppleDouble(SeekableReadStream *stream);
/**
* Get Finder info from a file in MacBinary format
*/
static bool getFinderInfoFromMacBinary(SeekableReadStream *stream, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo);
/**
* Get Finder info from a file in AppleDouble format
*/
static bool getFinderInfoFromAppleDouble(SeekableReadStream *stream, MacFinderInfo &outFinderInfo, MacFinderExtendedInfo &outFinderExtendedInfo);
static bool readAndValidateMacBinaryHeader(SeekableReadStream &stream, byte (&outMacBinaryHeader)[MBI_INFOHDR]);
static Path constructAppleDoubleName(Path name);
static Path disassembleAppleDoubleName(Path name, bool *isAppleDouble);