Macintosh-Tools
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MacDiskExtractor
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Add allocation Block Map

This commit is contained in:
Mixac1 2016-03-18 15:10:49 +03:00
parent 94eba936f3
commit 584be84d23
2 changed files with 166 additions and 69 deletions
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disk.cpp
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@ -4,16 +4,35 @@
#include <vector>
#include <iomanip>
#define FDIR_OFFSET 128 * 16
#define LOGBLOCK_LENGTH 512
#define ALLOCBLOCK_LENGTH LOGBLOCK_LENGTH * 2
#define VINF_OFFSET LOGBLOCK_LENGTH * 2
#define ABMAP_OFFSET VINF_OFFSET + 64
#define FDIR_OFFSET LOGBLOCK_LENGTH * 4
using namespace std;
class Disk {
fstream disk;
Disk() {
disk.open("copy.dsk", ios_base::binary | ios_base::in);
disk.seekg(VINF_OFFSET + 16);
drBILen = readByte(2);
drNmAIBIks = readByte(2);
allocBlockMap.resize(drNmAIBIks);
disk.seekg(ABMAP_OFFSET);
int temp, val1, val2;
for (int i = 0; i < drNmAIBIks;) {
temp = readByte(3);
val1 = (temp & 0x00FFF000) >> 12;
val2 = (temp & 0x00000FFF);
allocBlockMap[i++] = val1;
allocBlockMap[i++] = val2;
}
}
~Disk() {
@ -26,51 +45,90 @@ class Disk {
public:
static int read(int size) {
int drBILen;
int drNmAIBIks;
vector<int> allocBlockMap;
int readByte(int size) {
int res = 0;
for (int i = 0; i < size; ++i) {
res = res << 8;
res |= getDisk().get();
res |= disk.get();
}
return res;
}
static fstream& getDisk() {
string readString(int size) {
char *temp = new char[size + 1];
disk.get(temp, size + 1);
string stemp(temp);
delete temp;
return stemp;
}
static fstream& getDiskStream() {
return getDisk().disk;
}
static Disk& getDisk() {
static Disk _this;
return _this.disk;
return _this;
}
static int getFContOffset() {
return FDIR_OFFSET + LOGBLOCK_LENGTH * getDisk().drBILen;
}
static int findFile(int offset) {
Disk::getDisk().seekg(offset);
while (!(Disk::read(1) && 0x80)) {
Disk::getDiskStream().seekg(offset);
while (!(Disk::getDisk().readByte(1) && 0x80)) {
++offset;
}
return offset;
}
static void volumeInfo() {
Disk::getDisk().seekg(64 * 16);
int temp;
Disk::getDiskStream().seekg(64 * 16);
cout << hex;
cout << "--------------------" << endl;
cout << "always $D2D7 " << Disk::read(2) << endl;
cout << "date and time of initialization " << Disk::read(4) << endl;
cout << "date and time of last backup " << Disk::read(4) << endl;
cout << "volume attributes " << Disk::read(2) << endl;
cout << "number of files in directory " << Disk::read(2) << endl;
cout << "first block of directory " << Disk::read(2) << endl;
cout << "length of directory in blocks " << Disk::read(2) << endl;
cout << "number of allocation blocks on volume " << Disk::read(2) << endl;
cout << "size of allocation blocks " << Disk::read(4) << endl;
cout << "number of bytes to allocate " << Disk::read(4) << endl;
cout << "first allocation block in block map " << Disk::read(2) << endl;
cout << "next unused file number " << Disk::read(4) << endl;
cout << "number of unused allocation blocks " << Disk::read(2) << endl;
cout << "length of volume name " << Disk::read(1) << endl;
cout << "characters of volume namealways $D2D7 " << Disk::read(4) << endl;
cout << "Volume Information" << endl;
cout << "--------------------" << endl;
cout << "always $D2D7 " << Disk::getDisk().readByte(2) << endl;
cout << "date and time of initialization " << Disk::getDisk().readByte(4) << endl;
cout << "date and time of last backup " << Disk::getDisk().readByte(4) << endl;
cout << "volume attributes " << Disk::getDisk().readByte(2) << endl;
cout << "number of files in directory " << Disk::getDisk().readByte(2) << endl;
cout << "first block of directory " << Disk::getDisk().readByte(2) << endl;
cout << "length of directory in blocks " << Disk::getDisk().readByte(2) << endl;
cout << "number of allocation blocks on volume " << Disk::getDisk().readByte(2) << endl;
cout << "size of allocation blocks " << Disk::getDisk().readByte(4) << endl;
cout << "number of bytes to allocate " << Disk::getDisk().readByte(4) << endl;
cout << "first allocation block in block map " << Disk::getDisk().readByte(2) << endl;
cout << "next unused file number " << Disk::getDisk().readByte(4) << endl;
cout << "number of unused allocation blocks " << Disk::getDisk().readByte(2) << endl;
temp = Disk::getDisk().readByte(1);
cout << "length of volume name " << temp << endl;
cout << "characters of volume name " << Disk::getDisk().readString(temp) << endl;
cout << "--------------------" << endl;
cout << "Allocation Block Map" << endl;
cout << "--------------------" << endl;
int i = 0;
for (auto &it : getDisk().allocBlockMap) {
cout << 2 + i++ << "->" << it << " ";
if (it == 1) {
cout << endl;
}
}
cout << endl << "--------------------" << endl;
}
};
/* ------------------------------------------------------------------------- */
class File {
public:
@ -94,26 +152,22 @@ public:
int fEnd;
File(int offset) {
Disk::getDisk().seekg(offset);
flFIags = Disk::read(1);
Disk::getDiskStream().seekg(offset);
flFIags = Disk::getDisk().readByte(1);
if (flFIags & 0x80) {
flTyp = Disk::read(1);
flUsrWds = Disk::read(16);
flFINum = Disk::read(4);
flStBlk = Disk::read(2);
flLgLen = Disk::read(4);
flPyLen = Disk::read(4);
flRStBlk = Disk::read(2);
flRLgLen = Disk::read(4);
flRPyLen = Disk::read(4);
flCrDat = Disk::read(4);
flMdDat = Disk::read(4);
flNam = Disk::read(1);
char *temp = new char[flNam + 1];
Disk::getDisk().get(temp, flNam + 1);
flNamS = string(temp);
delete temp;
flTyp = Disk::getDisk().readByte(1);
flUsrWds = Disk::getDisk().readByte(16);
flFINum = Disk::getDisk().readByte(4);
flStBlk = Disk::getDisk().readByte(2);
flLgLen = Disk::getDisk().readByte(4);
flPyLen = Disk::getDisk().readByte(4);
flRStBlk = Disk::getDisk().readByte(2);
flRLgLen = Disk::getDisk().readByte(4);
flRPyLen = Disk::getDisk().readByte(4);
flCrDat = Disk::getDisk().readByte(4);
flMdDat = Disk::getDisk().readByte(4);
flNam = Disk::getDisk().readByte(1);
flNamS = Disk::getDisk().readString(flNam);
fBegin = offset;
fEnd = fBegin + 51 + flNam;
@ -123,35 +177,54 @@ public:
}
}
void printAll() {
cout << hex;
cout << "--------------------" << endl;
cout << "flags " << flFIags << endl;
cout << "version number " << flTyp << endl;
cout << "information used by the Finder " << flUsrWds << endl;
cout << "file number " << flFINum << endl;
cout << "first allocation block of data fork " << flStBlk << endl;
cout << "logical end-of-file of data fork " << flLgLen << endl;
cout << "physical end-of-file of data fork " << flPyLen << endl;
cout << "first allocation block of resource fork " << flRStBlk << endl;
cout << "logical end-of-file of resource fork " << flRLgLen << endl;
cout << "physical end-of-file of resource fork " << flRPyLen << endl;
cout << "date and time of creation " << flCrDat << endl;
cout << "date and time of last modification " << flMdDat << endl;
cout << "length of file name " << flNam << endl;
cout << "--------------------" << endl;
string printAll() {
return string("--------------------") +
"\nflags " + to_string(flFIags) +
"\nversion number " + to_string(flTyp) +
"\ninformation used by the Finder " + to_string(flUsrWds) +
"\nfile number " + to_string(flFINum) +
"\nfirst allocation block of data fork " + to_string(flStBlk) +
"\nlogical end-of-file of data fork " + to_string(flLgLen) +
"\nphysical end-of-file of data fork " + to_string(flPyLen) +
"\nfirst allocation block of resource fork " + to_string(flRStBlk) +
"\nlogical end-of-file of resource fork " + to_string(flRLgLen) +
"\nphysical end-of-file of resource fork " + to_string(flRPyLen) +
"\ndate and time of creation " + to_string(flCrDat) +
"\ndate and time of last modification " + to_string(flMdDat) +
"\nlength of file name " + to_string(flNam) +
"\n--------------------\n";
}
void printFileName() {
cout << "File name: " << flNamS << endl;
string printFileName() {
return string("File name: ") + flNamS + "\n";
}
string getValidFileName() {
string temp = flNamS;
auto it = temp.find("/");
while (it < temp.size()) {
temp.replace(it, 1, "_");
it = temp.find("/");
}
return temp;
}
string saveFile() {
string temp = "save file: \n";
Disk::getDiskStream().seekg(Disk::getFContOffset() + (flRStBlk - 2) * ALLOCBLOCK_LENGTH);
for (int i = 0; i < flRLgLen; ++i) {
temp += (char)Disk::getDiskStream().get();
}
return temp;
}
};
int main() {
Disk::getDisk().seekg(64 * 16 + 12);
int fileCount = Disk::read(2);
Disk::getDiskStream().seekg(VINF_OFFSET + 12);
int fileCount = Disk::getDisk().readByte(2);
vector< File > files;
@ -160,14 +233,38 @@ int main() {
fBegin = Disk::findFile(fBegin);
files.emplace_back(fBegin);
fBegin = files.back().fEnd;
cout << "counter: " << i << endl;
files.back().printFileName();
files.back().printAll();
cout << endl << endl;
}
Disk::volumeInfo();
system("rm -r Files");
system("mkdir Files");
vector< fstream > fileStreams(fileCount);
for (int i = 0; i < fileCount; ++i) {
fileStreams[i].open(string("Files/") + to_string(i) + ":" + files[i].getValidFileName() + ".txt", std::fstream::out);
if (!fileStreams[i].is_open()) {
cout << "error: file not created: " << files[i].flNamS + ".txt" << endl;
}
fileStreams[i] << files[i].printAll() << endl;
fileStreams[i] << files[i].saveFile() << endl;
fileStreams[i].close();
}
int q1 = Disk::getFContOffset();
int q2 = q1 + (files.back().flRStBlk - 2) * ALLOCBLOCK_LENGTH;
int q3 = q2 + files.back().flRPyLen;
cout << dec;
cout << "our first file " << q1/ 16 << endl;
cout << "our end file " << q2 / 16 << endl;
cout << "our end file end " << q3 / 16 << endl;
cout << "MB end file " << (q3 + LOGBLOCK_LENGTH * 3) / 16 << endl;
Disk::getDiskStream().seekg(0, ios::end);
cout << "Disk size " << Disk::getDiskStream().tellg() / 16 << endl;
return 1;
}